Continuous improvement to meet customer demand, Red Star 5X Sand

Posted on April 19, 2012 by admin

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light weight concrete – China Manufacturer
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 Sand and gravel material configuration Concrete important and indispensable component of the admixture accounted for the 3/1. With the rapid development of the construction industry, construction requirements for aggregates growing, but the river sand as a local resource within a short time can not be renewable natural sand resources in many areas of China to gradually reduce, or even natural sand, concrete sand supply and demand contradiction, especially the price of sand is getting higher and higher, affecting the progress of the construction of the project.
     With the ban on logging of natural gravel, artificial sand and gravel will gradually replace the natural sand to become mainstream in the infrastructure of sand. Sand developments, customers must be clear in the choice of the sand system equipment for investment is also necessary to the development of major sand making machine, avoid spinning your wheels.
    Instead of river sand materials research more sand, also known as the Sand Sand Sand crushing, screening made through the rational use of the powder in the Sand, adjusting the rate of concrete sand, you can configure the concrete of the workability of a good, ordinary concrete mix design procedures, mix design method is fully applicable to the artificial sand. Compacting of the concrete of the proper use of artificial sand large, the performance of impermeability, anti-pulp, and other physical and mechanical properties and long-term durability can meet the design requirements. The artificial sand is particularly suitable for the preparation of high-strength grade of concrete, high-performance concrete pumping concrete.
    5X Sand Henan Hongxing technology developed, the market is also known as the sixth-generation sand making machine, excellent value for money, reliability, unique in similar products. Long-term accumulation of technology, modern processing equipment finely crafted to ensure the new 5X Sand in the same industry leading position. 5X Sand is the latest design achievements of the working conditions of China, is the exclusive production of the world s advanced level of high-performance sand system equipment. The sand making machine is designed for highways, high-speed railway, high-rise buildings, municipal, construction of hydroelectric dams, concrete batching plant to provide high-quality sand and gravel aggregate, artificial sand and stone shaping device of choice.
   Market demand continues to increase and sand industry, increased competition, Henan Hongxing technology through long-term fieldwork, in-depth sand the scene to understand customer needs, and constantly refined and improved the system of sand equipment for its customers access to greater benefits. Henan Hongxing sand making production line is widely used in mining, building materials, metallurgy, transportation, hydropower, coal, chemical, environmental protection and other industries, not only contribute to the infrastructure construction in China, more dressing, sand, and the milling industry has played a good exemplary role ! also to follow the market demand for innovation continue to enhance the quality, restructuring clever to make a fuss, accelerating the product structure optimization pace, always with the interests of customers as oriented to produce high-quality machinery for the country for the benefit of the customer the benefit of .
   Henan Hongxing new sand and gravel aggregate production line, the aggregate of its production to fully meet the quality and schedule requirements. The entire device configuration done easy to operate, reliable, cost-effective, low energy consumption and other consumption, and reduce the cost of production run. In the process design of the artificial aggregate production and processing systems, in addition to the focus to consider the strength of the concrete of the main project, but also give full consideration to the technical requirements and the source material conditions of the tender documents, so that the optimization process and device configuration, layout full consider the use of the processing site, the terrain conditions, to achieve a compact and reasonable.

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What is the oil-immersed transformer S9-M

Posted on April 19, 2012 by admin

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Transformer High Voltage – China Manufacturer
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http://www.chinesetransformer.com/key-high-voltage-power-transformers-11/

The oil-immersed transformer S9-M What does it mean: S – three-phase 9 – Design Number M – closed

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The basics of power transformer works

Posted on April 19, 2012 by admin

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Transformer is to transform the AC voltage, current and impedance of the device is to use the principle of electromagnetic induction, the transformer is from a an electrical circuit to another circuit transmission of electric energy or transmission signal.

    Transformers —- static electromagnetic device.
    1, when the AC current through the primary coil and core (or cores) have given rise to the exchange flux in the secondary coil induces a voltage (or current). Transformer core (or cores) and the coil, the coil there are two or more windings, which connected the power winding is called the primary coil, the rest of the winding is called the secondary coil.
 
    The secondary winding of the magnetic flux phasor φm, the magnetic flux is called the coil connected to the main flux and the power receiving AC power, called the primary winding. And load coil, connected to send AC power, called the secondary winding.

    2, the ideal transformer is excluding other loss assumptions, the transformer in the actual loss of a few percent.

    If once the secondary winding voltage, the instantaneous value of the electromotive force according to sine law changes U1 is / U2 = E1/E2 = N1/N2, excluding the core loss, according to the principle of conservation of energy available the: U1I1 = U2I2 resulting time the relationship between the secondary winding voltage and current RMS: U1/U2 = Ratio I2/I1 Let K = N1/N2, called the turns ratio (also known as voltage): U1/U2 = K, I1/I2 = 1 / K

    1, classification
    Cooling methods: (since cold) dry-type transformers, oil immersed (self-cooled) transformers, fluoride (evaporative cooling) transformer.
    Moisture-proof ways: open-type transformers, potting-type transformers, sealed transformers.
    Core or coil structure: the core-type transformer (plug-chip core, the C-type iron core, ferrite core), core of the shell-type transformers (inserts, C-type iron core, ferrite core), toroidal transformers, metal foil transformers.
    Press the power number of phases: single-phase transformers, three-phase transformers, multi-phase transformer.
    Uses: power transformers, regulating transformers, audio transformers, IF transformers, high frequency transformer, pulse transformer.

    Second, the characteristic parameters of the power transformer:
    1, the operating frequency
    Transformer core loss and frequency, it should be based on frequency of use to design and use of this frequency is known as the operating frequency.

    2, rated power
    Specified frequency and voltage, the transformer can be long-term work, not to exceed the provisions of the temperature rise of output power.

    3, the rated voltage
    In the coil of the transformer allows the voltage applied to the work shall not be greater than the specified value.

    4, the voltage ratio
    Refers to the ratio of the transformer primary voltage and secondary voltage, the difference between no-load voltage ratio and load voltage ratio.

    5, no-load current
    The transformer secondary is open circuit, the current of the primary is still a certain part of the current is called the no-load current. No-load current (generated magnetic flux) by the magnetizing current and iron loss current (caused by the core loss). For 50 Hz power transformer no-load current is basically equal to the magnetizing current.

    6, no-load loss
    Refers to the secondary open circuit of the transformer in the primary measured power loss. The main loss is core loss, followed by the no-load current in the primary coil copper resistance loss (copper loss), this part of the loss is small.

    7, efficiency
    Means the ratio of the percentage of secondary power P2 and P1 in primary power. Usually the greater the power rating of the transformer, the higher the efficiency.

    8, the insulation resistance
    Said the performance of the insulation between the coils of the transformer, between the coil and core. Insulation resistance performance of high and low with the use of insulating materials, to high and low temperature and humid.

   Three audio transformers and high-frequency transformer parameters
    1, the frequency response
    Refers to the transformer secondary output voltage characteristics with changes in the operating frequency.

    2, the passband
    If the transformers in the intermediate frequency output voltage U0, when the output voltage (input voltage remains the same) decreased when 0.707U0 frequency range, known as the transformer passband B

    3, the beginning of the secondary impedance ratio
    The beginning of the transformer secondary access to the appropriate impedance Ro and Ri, the transformer primary, secondary impedance matching, the ratio of Ro and Ri are called early, the secondary impedance ratio. In the case of impedance matching transformer in the best condition, the transmission efficiency.

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Transformer differential protection principle and unbalanced current and overcome

Posted on April 18, 2012 by admin

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Distribution Power Transformer – China Manufacturer
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Abstract: This paper elaborated on the transformer differential protection of the basic principle, the longitudinal differential protection for the unbalanced current analysis and transformer differential current imbalance protection to overcome.

Introduction longitudinal differential protection is the primary protection of all the main electrical equipment, its high sensitivity, good selectivity, the use of the more successful in the transformer protection. Transformer differential protection has been difficult to identify the problem of magnetizing inrush current, although there have been some of the more effective blocking scheme, but also because of the increase in the length of EHV transmission lines, static reactive power compensation capacity increases as well as transformer silicon steel process improvements , the improvement of the magnetization characteristics and other factors inherent in the transformer differential protection principle of contradiction is more prominent.

A transformer differential protection of the basic principles of

Longitudinal differential protection on the generator is relatively simple, but as the main transformer internal fault protection, differential protection will have many features and difficulties. The transformer has two or more voltage levels constitute a longitudinal differential protection with the rated parameters of the current transformer longitudinal differential protection resulting unbalance current than the generator is much larger, longitudinal differential protection is the use of of comparison was to protect the principle of amplitude and phase components of each side current, according to the fundamental theorem of KCL, when the protective equipment trouble-free constant of the current inflow and must equal the outflow current.

Become a new terminal to be protected within the device itself fails, the short circuit point, and the current is greater than 0, but in fact in the external short circuit occurs when there is an unbalance current. In fact, the external short-circuit fault occurs, the external short-circuit current, especially the transient process contains a non-periodic component of current, the current transformer excitation current increases rapidly, makes the transfer of the transformer on both sides of the transformer was saturated varying characteristics is difficult to be consistent, while a large unbalance current. Therefore, with the braking characteristics of principle, the greater the external short-circuit current, the greater the braking current relay can be reliably braking.

In addition, because the composition of longitudinal differential protection principle is based on the comparison transformer side of the current magnitude and phase, by the transformer side of the current transformer, as well as many other factors, the transformer in normal operation and external fault, the dynamic differential protection circuit has balance current differential protection in adverse working conditions. Unbalanced current in the circuit to ensure that the transformer differential protection sensitive action analysis to identify causes and take measures to eliminate.

(2) longitudinal differential protection for the unbalanced current analysis

2.1 steady-state case of unbalanced current

Transformer longitudinal differential protection during normal operation, the loop imbalance current is mainly caused by the current transformer, the transformer wiring and transformer with load regulator.

Change calculated by the current transformer ratio and the actual ratio different. Normal operation when the size of each side of the transformer current are not equal. Order to meet the normal operation or external short circuit into the relay differential circuit current is zero, should make the high current of low pressure both sides into the relay are equal, ie, the ratio of the low-side current transformer ratio should be equal to the transformer variable ratio. But, in fact, the current transformer turns ratio than are variable according to the criteria selected by the catalog, the transformer turns ratio is certain, so the above conditions can not be met, and they may be unbalanced current.

Generated by the transformer on both sides of the current phase. The transformer is frequently used in the wiring on both sides of the current phase difference of 30 °. At this point, if both sides of the current transformer still use the usual connection mode, the secondary current is due to different phase will create an imbalance in the longitudinal differential protection circuit current.

Generated by adjusting the tap of the transformer with a load. Often used in the power system, load tap change transformer tap position to adjust the operation of the system voltage in the transformer with a load at run time. Changing transformer tap position, in fact, is to change the transformer changes. Longitudinal differential protection has been changed by a transformer operating mode is better than adjustment, when the transformer with load regulator, the ratio will change, this time, the longitudinal differential protection would have to re-adjust in order to meet the requirements, but running is impossible. Therefore, the transformer tap position changes will create an imbalance in the differential relay current, voltage adjustment range, but also on the increase of primary current increase.

2.2 transient case of unbalanced current

Generated by the transformer inrush current

The transformer magnetizing current is flowing through the transformer connected to the power supply on one side, the existence of the differential circuit, the excitation current is equivalent to short-circuit current when the transformer internal fault. Therefore, it is bound to adversely affect the proper work of the longitudinal differential protection. Under normal circumstances, the transformer magnetizing current is small, the differential unbalance current protection circuit is also very small. External short circuit, due to lower system voltage, excitation current will be reduced. Therefore, the excitation current in normal operation and external short circuit the influence of the longitudinal differential protection can often be negligible. However, the voltage sudden increase in the extraordinary case, for example the case of transformer no-load input and an external fault clearing to restore power, may be a large excitation current, this transient process of the transformer magnetizing current is usually said magnetizing inrush current.

Transient through the short-circuit current generated by the transformer external fault

Longitudinal differential protection is instantaneous protection tripping pulse is issued in a system short-circuit transient process. Therefore, we must consider the impact of unbalanced current external fault transient process it. Short-circuit current of the transformer external fault transient process, a system containing non-periodic component, its time rate of change is very small, it is difficult to transform to the secondary side, and the main transformer magnetizing current, so that the transformer the core saturation.

3 transformer differential overcome the current imbalance in the protection of

From the above analysis shows that, to constitute a longitudinal differential protection, if not take appropriate measures the inflow unbalanced current differential relay will be a great escape transformer external fault occurs when the maximum unbalanced current setting of longitudinal differential protection valuation will also be large, the sensitivity of the protection will be low. If we consider the influence of the magnetizing inrush current, the protection will not work. Therefore, how to overcome the current imbalance, and the elimination of its protection, improve the sensitivity of protection, they become the center of the longitudinal differential protection.

Overcome the current imbalance generated by the current transformer ratio

Unbalanced current can be different with the actual change than the two kinds of methods to overcome: First, using the auto-converter to compensate for current transformer calculation change. Usually installed in the transformer side of the current transformer auto-converter, LH output to the input of the converter, when the change than to change the auto-converter, you can make the converter\\ s output current is equal to not the installation of the secondary current of the converter LH, so that the inflow of the current differential relay is zero or close to zero. The second is the middle of the balance of the converter coil magnetic compensation. Usually in the middle of the converter core around the primary coil differential coil access differential current, and also around a balance coil and a secondary coil, the smaller side of the access to secondary current. Appropriate choice to balance the number of turns of the coil, the magnetic potential energy generated by the coil of the balance to fully offset the magnetic potential generated by the differential coil, no EMF in the secondary coil, and thus no current flows in the differential relay. Using this method, according to a formula to calculate the balance of the coil turns are generally not an integer, but in fact the balance coil can only by an integer choice, therefore there will be a residual imbalance current, this during the longitudinal differential protection given value setting calculation should be considered.

Overcome the current imbalance generated by the transformer on both sides of the current phase

Imbalance in current transformers on both sides of the current phase can be overcome by changing the LH wiring. Y-shaped terminal side of the transformer, the LH △-shaped wiring, transformer △-shaped wiring side, the LH using a Y-shaped junction on both sides of the LH secondary side output current phase is just the same phase. But when the LH using the above connection, LH differential access into △-shaped side arm, the current increases three times, in order to ensure normal operation and external fault conditions in the differential circuit current, must be on the side of LH change than the expanded three times to reduce the secondary current, making it equal with the other side of the current.

Unbalanced current through the short-circuit current generated by the transformer external fault transient overcome

The transient process of the transformer external fault, the longitudinal differential protection for non-periodic components create an imbalance current, mainly due to a systematic short-circuit current contains widely used with different characteristics in order to eliminate the impact of its transformer differential protection the differential relay.

Using the differential relay with speed saturation converter is one of the effective way to overcome transient non-periodic components affect. Depending on the speed of saturation magnetization curve of the converter can be seen, the periodic component is easily saturated by speed converters transform the secondary side, rather than the periodic component is not easily transformed to the secondary side of the saturation speed converter. Therefore, when a coil current through the transient imbalance in the secondary side induction potential is very small, this time a very small current flowing into the differential relay, differential relay will not operate.

In addition, the differential relay with magnetic braking characteristics. Differential relay is on the basis of the speed saturation converter, a set of brake coil, when using an external fault short circuit current to achieve the braking relay start current increase with the increase of the braking current reliable, it can escape the unbalanced current in the transformer when the external short circuit, and increase the sensitivity of the transformer internal fault. Therefore, the starting current of the relay with the increase of the braking current increases. Correct value, you can make the actual starting current of the relay regardless of the role of external short-circuit current of any size is greater than the corresponding unbalanced current transformer differential protection can be reliably escape the transformer external short circuit imbalance currents.

Imbalance generated by the magnetizing inrush current is still the focus of the longitudinal differential protection, unbalanced current caused by the design of the differential protection is not the same. Therefore, in practice the transformer differential protection, should be combined with different options for the specific design.

 

 

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Generation of crusher

Posted on April 16, 2012 by admin

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shaking table – China Manufacturer
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 The Yuzhou crusher-equipment-3/">crusher equipment on the market has strong potential, can be seen in the continuous development of new crusher quality is first-class good, high cost, with the scale of the continuous development of China\\ s coal, mining, construction and other industries crusher showing a species, the growing number of improvements released a new generation of crusher. With the industry continuously improve the product quality requirements of the crusher, Yu Chau Heavy higher requirements for the technology of the crusher, Jaw crusher a newer and higher requirements on continuous improvement and innovation. In the case of a variety of multi-functional automatic crusher gradually entering enterprise Yuzhou the further development of the crusher to turn.
      Jaw Crusher Working Principle:
This product is motor power, motor pulley, by the triangle belt and slot wheel drive eccentric shaft, the movable jaw for reciprocating movement to a predetermined trajectory will enter the crushing cavity composed of fixed jaw plate, movable jaw plate and side shield the material crushing, and the finished material discharged through the lower part of the discharge opening.
     Jaw crusher after-sales service:
1, according to the user situation to provide targeted technical training, product quality tracking of key users, users regularly visit, according to user needs in a timely manner to improve product performance, and continuously improve product quality;

2, to ensure good sales service to provide users with, provide relevant information on product performance and use requirements for the user in order before a good guide when the user;

Need for technical services will send a qualified service technician to participate in out-of-the-box acceptance and guidance, installation, commissioning of the normal operation until the device;

4, the user received a request to resolve the notice of the products in use, the Company made within one hour initial response to major issues in the 24 hours to arrive at the scene.

 

 

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Distribution transformer capacity to select how

Posted on April 16, 2012 by admin

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In the operation of the distribution transformer, underrun due to excessive capacity, but also cause overheating due to overload or overcurrent run, and even burned. Installed capacity choice misconduct, affecting the reliability of supply of electric power system and economy.

The capacity of the transformer is selected on the basis of the load statistics. Due to the load is not expected to do accurately – as selected by the expected maximum load. The election result, often the capacity is set too large, an adverse impact on the operation of the power system. Economic operation, is to use the transformer copper loss and iron loss equal conditions, to export the economic load of the transformer ratio and the transformer rated capacity and maximum load ratio. The actual running load is not necessarily load the statistics of the maximum load and the load is random, the operating efficiency of changes in its economic and operational benefits difficult to achieve.

Replace the high-energy transformer in the distribution system taking advantage of new low-loss transformers, single iron loss of a reduced by about 40%. The number of distribution transformers, load variations, and its economic benefits are very significant of.

Therefore, we consider how to fully utilize the capacity of the transformer setting, without compromising the normal life of the transformer,

Should become the main basis for select distribution transformer capacity.

The approach we recommend is: according to the Smax and the typical daily load curve of the negative thin expected maximum load, the load in accordance with the International Electrotechnical Commission (IEC) standards (1972), an oil-immersed transformer war guidelines, select the distribution transformer capacity. The standard has been adopted by our country. The advantages of this method is to consider the transformer to normal over the capacity, shorten transformer life printed under the premise of making full use of the capacity of the transformer set. Reduce investments in improving the operating conditions of the distribution network, its economic benefits are also significant of the

Calculated according to the method for compiling a computer program, six typical daily load curve of the distribution transformer capacity selection table, the negatively charged curve load reference type

I: irrigation, wheat field with;

H: Village to pay the industry; lighting, yard;

Dish: pay industry; lighting, irrigation, yard;

IV: land, county industrial use;

V: with industrial load Village load;

VI: urban-industrial complex load.

Schedule to the wind as follows

① determine the types of load, selected typical daily load curve.

② determine the equivalent air temperature θδ; IEC standards in the ambient temperature is not the average temperature of the environment, but the equivalent air temperature, the implication is: the time interval, under load, such as maintain θδ unchanged, then the insulation deterioration of insulation deterioration equal to changes in air temperature naturally; here for convenience, we recommend: Gangnam area of ??22 ℃, 24 ℃ in the north of 20 ℃ of the northwest and northeast to take 16 ° C, 18 ° C

Expected to be out of the maximum load value (kVA), look-up table to determine the selected transformer rated the quality of Sn.

For example: load curve I, the equivalent annual air temperature 9 ° C; maximum load of 1000 kVA, 800 kVA distribution transformer should be selected.

④ According to the environmental conditions and negative lotus type, to determine the normal work of transformer overload capabilities.

Such as category VI load curves, the equivalent annual air temperature is 22 ° C, the forehead of the work of the transformer capacity of 315 kVA transformer with a maximum load of 340 kVA.

This article is for 35 KV and below voltage distribution transformer capacity selection table, if the user\\ s daily load curve is very different from the six daily load curve of this article; may be of the computer program in the IBM-PC machine or PC-1500 on the calculation, the same to get the desired results;

It should be noted: in accordance with the above method to select the transformer capacity should also be bound to accept the maximum load continuous operation to allow time in the actual operation; in order to ensure safety. If you exceed the allowable time is still the risk of burning transformers. This allows maximum thermometer formula, according to the natural cycle of oil-immersed transformer windings. In order to facilitate; Schedule has to calculate the maximum load limit of the running time τmaxe conditions: environmental temperature of 35 ° C, the winding hot spot temperature does not exceed the load limit running time 140 For example: Schedule IV equivalent air temperature is 20 ℃ penalty 17 hours, consists of six tables, when the maximum load and the rated capacity of more than 3dl. 1.17 and below, the maximum load extremely limited, there will be no danger of overheating.

 

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three ball valve working principle of analytic

Posted on April 14, 2012 by admin

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pvc gate valve – China Manufacturer
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First, open process

[Wiki] mechanical [/ wiki] to put pressure on the role of 1 in the closed position, the sphere of the valve stem, pressed on the seat.

Turn handwheel, the valve stem is the reverse movement, the bottom of the angular plane so that the sphere to disengage the valve seat.

3 stem continue to enhance the interaction and stem the spiral groove of the guide pin, the sphere began to friction-free to rotate.

4 up to the fully open position, the stem raised to the limit position, the sphere rotated to the fully open position.

Second, the shutdown process

A closed, clockwise rotation of the handwheel, stem began to decline and make a sphere out of the seat begins to rotate.

2 Continue turning the handwheel, the valve stem by the spiral groove embedded in its role of guide pins, so that the stem and the sphere at the same time rotated 90 °.

3 near the closed sphere in the case of contact with the seat rotated 90 °.

4 handwheel is turned the final laps, the stem at the bottom of the angular plane mechanical wedge to the oppression of the sphere, so that it closely pressed on the seat, to achieve complete seal.

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LED lighting can not develop without the support of the national

Posted on March 21, 2012 by admin

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led kitchen lights – China Manufacturer
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http://www.swinled.com/key-led-kitchen-lights-32/

LED lighting can not develop without the support of the national government and enterprises to vigorously develop products
 Warming, environmental pollution has become more critical, the state government to vigorously promote energy saving and environmental protection policies. The development of LED lighting to conform to the trend of the times, according to a comprehensive energy reduction program issued by the State Council Development and Reform Commission through fiscal subsidies ways to promote the 150 million led lighting products. 2015, LED lighting to account for into the Guangdong indoor lighting. Guangdong to promote LED lighting is the start of the installation from the city lights, there will be more than 600,000 LED street lamps illuminate the Pearl River Delta metropolitan area of ??sky in the next 2 years. According to plan, next year is the opening time of the LED lighting into the interior lighting by 2015, LED lighting to account for three percent of the interior lighting in Guangdong, the province has 200,000 LED lamps.

    It is reported that LED lighting could save more than 90 percent of power than incandescent, but also save 50% or more than the energy-efficient high pressure sodium lamp, energy saving and the future of lighting is a very important product. Since the state has not yet relevant standards, the preliminary planning of the Provincial Department of Science and Technology is the lead in establishing the benchmark system of LED lights to ensure quality. Next year, funding from the financial enterprises started a pilot, and then gradually to the public. Science and Technology Department has taken into account subsidies, investment institutions and free way to promote LED light to enter the public at home.

    Raise the level of LED lighting technology, LED lamp production costs decline, the market price of the LED lighting also made a downward adjustment. Shenzhen co step HEG LED indoor lighting products for their own professional development: LED flat light, LED downlight, LED fluorescent tube, LED bulb lights such as LED energy-saving lamps to price adjustment. So that the public can be faster to use LED lights, so that people can feel the benefits of technology can bring

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LED lighting can not develop without the support of the national

Posted on March 21, 2012 by admin

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led kitchen lights – China Manufacturer
Thank you for inquiry my led kitchen lights, Tel: 86-577-62608819, E-MAIL:swinled@yahoo.com
http://www.swinled.com/key-led-kitchen-lights-32/

LED lighting can not develop without the support of the national government and enterprises to vigorously develop products
 Warming, environmental pollution has become more critical, the state government to vigorously promote energy saving and environmental protection policies. The development of LED lighting to conform to the trend of the times, according to a comprehensive energy reduction program issued by the State Council Development and Reform Commission through fiscal subsidies ways to promote the 150 million led lighting products. 2015, LED lighting to account for into the Guangdong indoor lighting. Guangdong to promote LED lighting is the start of the installation from the city lights, there will be more than 600,000 LED street lamps illuminate the Pearl River Delta metropolitan area of ??sky in the next 2 years. According to plan, next year is the opening time of the LED lighting into the interior lighting by 2015, LED lighting to account for three percent of the interior lighting in Guangdong, the province has 200,000 LED lamps.

    It is reported that LED lighting could save more than 90 percent of power than incandescent, but also save 50% or more than the energy-efficient high pressure sodium lamp, energy saving and the future of lighting is a very important product. Since the state has not yet relevant standards, the preliminary planning of the Provincial Department of Science and Technology is the lead in establishing the benchmark system of LED lights to ensure quality. Next year, funding from the financial enterprises started a pilot, and then gradually to the public. Science and Technology Department has taken into account subsidies, investment institutions and free way to promote LED light to enter the public at home.

    Raise the level of LED lighting technology, LED lamp production costs decline, the market price of the LED lighting also made a downward adjustment. Shenzhen co step HEG LED indoor lighting products for their own professional development: LED flat light, LED downlight, LED fluorescent tube, LED bulb lights such as LED energy-saving lamps to price adjustment. So that the public can be faster to use LED lights, so that people can feel the benefits of technology can bring

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Professional crusher for sand and gravel crushing mining technology

Posted on March 21, 2012 by admin

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crusher plant – China Manufacturer
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http://www.enchuangxin.com/key-crusher-plant-20/

Urban construction waste crushing, highway, railway construction, gravel aggregate used in the urban high-rise building will be used broken machinery, broken machinery is essential in the production line of sand and stone production line equipment, including jaw broken, sand machine, counter sand and gravel aggregate production mouth broken collectively referred to as broken machinery, mainly in the field of crushing operations, according to the material and quality of different stone materials, the production of high hardness specification of the granularity of a unified, based on actual demand to select the actual crushing plant processes so that the broken machinery field of use is more extensive.
A full set of sand and gravel crusherzy.com/key-crushing-equipment-104/">crushing equipment to the composition of the feeder, jaw broken, sand making machine, impact crusher, vibrating screen, control cabinet, the entire production line for the integrated production line operations, and fully reflects the efficient production lines, flexible, easy to use, saving human labor cost advantage in the gravel and broken, broken machinery into the production process there will be wear and consumption in the selection of equipment at the same time, select equipment and models of quality and materials to cross the border, broken mechanical equipment and stone in the sand The device plays an important role in the entire production line from the broken and crushing operations.
Gravel professional crusher driven by developments in the sand and gravel aggregate quickly, pipeline operations, highway, high-iron, sand mining, quarry and construction aggregate, mining and ore processing, as in infrastructure construction aggregate crushing, truly rapid development and innovation and progress, and promote a fully automated and automated control systems, broken to the modernization of the production process instead of the traditional sand process to achieve rapid economic development of rapid innovation, intelligent, high-end construction.

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