Dynamic reactive power compensation device

Abstract

The utility model relates to a cooling device and a dynamic reactive power compensator, the cooling device is used for cooling the dynamic reactive power compensator, the dynamic reactive power compensator comprises a housing, the housing is provided with an air inlet and an air outlet, the cooling device comprises a refrigeration assembly, the refrigeration assembly is provided with a hot air inlet and a cold air outlet; one end of the air supply pipeline is connected with the cold air outlet, and the other end of the air supply pipeline is used for being connected with the air inlet; one end of the air return pipeline is connected with the hot air inlet, and the other end of the air return pipeline is used for being connected with the air outlet. Through the technical scheme, the cooling equipment provided by the utility model can cool and dissipate heat for the dynamic reactive power compensation device, and the stability of the dynamic reactive power compensation device is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of cooling equipment, in particular, to a dynamic reactive power compensation device. BACKGROUND

[0002] The dynamic reactive power compensation device is a relatively advanced reactive power compensation method, and is widely applied to wind power generation. The natural wind cooling type dynamic reactive power compensation device adjusts voltage through a power module IGBT and adjusts current through a capacitor, and the work heat loss is about 1% KVA, which is cooled through a self-provided cooling fan.

[0003] In the related art, the dynamic reactive power compensation device directly exchanges heat with external air, however, humid air and air impurities entering the inside of the dynamic reactive power compensation device can seriously affect the stability of the dynamic reactive power compensation device. The humid air can corrode control electronic components and power components, and excessive humidity can cause short circuit and creeping, and the air impurities can easily block the original heat dissipation channel, thereby affecting heat dissipation. CONTENT OF THE INVENTION

[0004] The purpose of the present disclosure is to provide a dynamic reactive power compensation device which can cool and dissipate heat and improve the stability of the dynamic reactive power compensation device.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a dynamic reactive power compensation device, comprising a cooling equipment for cooling and cooling of the dynamic reactive power compensation device, the dynamic reactive power compensation device comprising a shell having an air inlet and an air outlet, the cooling equipment comprising: a refrigeration assembly having a hot air inlet and a cold air outlet; an air supply pipeline, one end of the air supply pipeline being connected to the cold air outlet, and the other end being used for connecting the air inlet; and an air return pipeline, one end of the air return pipeline being connected to the hot air inlet, and the other end being used for connecting the air outlet, the number of air inlets being multiple, the air supply pipeline having an air supply main pipeline and multiple air supply branch pipelines, one end of the air supply main pipeline being in communication with the cold air outlet, the other end of the air supply main pipeline being connected to one end of the multiple air supply branch pipelines, and the other ends of the multiple air supply branch pipelines being in communication with the multiple air inlets one by one; and / or, the number of air outlets being multiple, the air return pipeline having an air return main pipeline and multiple air return branch pipelines, one end of the air return main pipeline being connected to the hot air inlet, the other end of the air return main pipeline being connected to one end of the multiple air return branch pipelines, and the other ends of the multiple air return branch pipelines being in communication with the multiple air outlets one by one.

[0006] Optionally, the refrigeration assembly further comprises an evaporator, a compressor, a condenser and a throttling valve, the evaporator, the compressor, the condenser and the throttling valve being connected in sequence through pipelines to form a closed loop, and the compressor is used for circulating refrigerant to the closed loop.

[0007] Optionally, an inner wall of the air supply pipeline and / or the air return pipeline is provided with a heat insulation layer.

[0008] Optionally, the heat insulation layer is a ternary ethylene-propylene rubber layer.

[0009] Optionally, an outer wall of the air supply pipeline and / or the air return pipeline is provided with a protective layer.

[0010] Optionally, the protective layer is a galvanized sheet.

[0011] Optionally, the cooling device further comprises a dehumidifying device, which is arranged in the shell.

[0012] Optionally, the cooling device further comprises an air filter screen, which is arranged at the hot air inlet and / or the cold air outlet.

[0013] On the basis of the above-mentioned scheme, the present disclosure further provides a dynamic reactive compensation device, comprising a shell, the shell having two opposite side walls, one of which is provided with an air inlet, and the other of which is provided with an air outlet, a cooling device being arranged on the top of the shell, the air outlet being connected with the hot air inlet of the cooling device through an air return pipeline, and the air inlet being connected with the cold air outlet of the cooling device through an air supply pipeline.

[0014] Through the above-mentioned technical scheme, in the cooling device provided by the present disclosure, the refrigeration assembly forms a closed loop with the dynamic reactive compensation device through the air supply pipeline and the air return pipeline. The hot air generated by the dynamic reactive compensation device is discharged from the air outlet, enters the interior of the refrigeration assembly from the hot air inlet of the refrigeration assembly through the air return pipeline, is cooled by the refrigeration assembly and then discharged from the cold air outlet, enters the interior of the dynamic reactive compensation device from the air inlet through the air supply pipeline, and the process is repeated, so that the dynamic reactive compensation device is cooled. At the same time, since the cooling device and the dynamic reactive compensation device form a closed internal circulation, external air cannot enter, so that water vapor and dust in the air cannot enter the interior of the dynamic reactive compensation device to cause pollution, thereby improving the stability of the dynamic reactive compensation device.

[0015] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following specific embodiments to explain the present disclosure but do not constitute a limitation on the present disclosure. In the drawings:

[0017] Figure 1 is a schematic view of a cooling device provided by the embodiment of the present disclosure applied to a dynamic reactive compensation device.

[0018] Figure 2 is a view of the cooling equipment provided by an embodiment of the present disclosure;

[0019] Figure 3 is another view of the cooling equipment provided by an embodiment of the present disclosure;

[0020] Figure 4 is a view of the cooling equipment connecting the dynamic reactive power compensation device through the air supply pipeline provided by an embodiment of the present disclosure;

[0021] Figure 5 is a view of the cooling equipment connecting the dynamic reactive power compensation device through the air return pipeline provided by an embodiment of the present disclosure.

[0022] Legend of reference signs

[0023] 1 - dynamic reactive power compensation device; 11 - shell; 12 - air inlet; 13 - air outlet; 2 - refrigeration assembly; 21 - hot air inlet; 22 - cold air outlet; 23 - evaporator; 24 - compressor; 25 - condenser; 3 - air supply pipeline; 31 - air supply main pipeline; 32 - air supply branch pipeline; 4 - air return pipeline; 41 - air return main pipeline; 42 - air return branch pipeline; 5 - dehumidification device; 6 - air filter. DETAILED DESCRIPTION

[0024] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0025] In the present disclosure, the orientation words such as "up, down" used herein generally refer to the "up, down" of the corresponding components in the use state in the direction of gravity, and "inner, outer" refer to the "inner, outer" relative to the outline of the corresponding components. In addition, the terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another element, and do not have sequentiality and importance. In the following description, when referring to the drawings, the same reference signs in different drawings represent the same or similar elements unless otherwise explained. The above definitions are only used to explain and illustrate the present disclosure, and should not be understood as limiting the present disclosure.

[0026] According to the exemplary embodiments of the present disclosure, reference is made to Figures 1 to 5As shown in FIG. 1, a cooling device is provided for cooling and temperature reduction of a dynamic reactive power compensation device 1, the dynamic reactive power compensation device 1 comprising a housing 11 having an air inlet 12 and an air outlet 13, the cooling device comprising: a refrigeration assembly 2 having a hot air inlet 21 and a cold air outlet 22; an air supply duct 3, one end of the air supply duct 3 being connected to the cold air outlet 22 and the other end being used for connecting to the air inlet 12; and an air return duct 4, one end of the air return duct 4 being connected to the hot air inlet 21 and the other end being used for connecting to the air outlet 13.

[0027] With the above technical solution, in the cooling device provided in the present disclosure, the refrigeration assembly 2 forms a closed loop with the dynamic reactive power compensation device 1 through the air supply duct 3 and the air return duct 4. The hot air generated by the dynamic reactive power compensation device 1 is discharged from the air outlet 13, enters the refrigeration assembly 2 from the hot air inlet 21 of the refrigeration assembly 2 through the air return duct 4, is cooled by the refrigeration assembly 2 and then discharged from the cold air outlet 22, enters the dynamic reactive power compensation device 1 from the air inlet 12 through the air supply duct 3, and the process is repeated, thereby achieving temperature reduction of the dynamic reactive power compensation device 1. At the same time, since the cooling device forms a closed internal circulation with the dynamic reactive power compensation device 1, external air cannot enter, so that water vapor and dust in the air cannot enter the interior of the dynamic reactive power compensation device 1 to cause pollution, thereby improving the stability of the dynamic reactive power compensation device 1.

[0028] In the present disclosure, the refrigeration assembly 2 can be any device having a refrigeration function. According to an exemplary embodiment of the present disclosure, referring to FIG. 2, the refrigeration assembly 2 can comprise an evaporator 23, a compressor 24, a condenser 25 and a throttle valve, which are connected in sequence through pipelines to form a closed loop, and the compressor 24 is used for circulating refrigerant in the closed loop. Figures 2 to 3 As shown in FIG. 2, the refrigeration assembly 2 can further comprise an evaporator 23, a compressor 24, a condenser 25 and a throttle valve, which are connected in sequence through pipelines to form a closed loop, and the compressor 24 is used for circulating refrigerant in the closed loop. In the above technical solution, the compression refrigeration technology is specifically adopted, the hot air becomes cold air after being blown to the evaporator 23, the refrigerant in the evaporator 23 absorbs heat from the hot air to increase the temperature, the refrigerant is compressed into high-pressure gas by the compressor 24, then is cooled by the condenser 25 to become high-pressure liquid, and then is decompressed by the throttle valve to become low-pressure liquid, and then enters the evaporator 23 to absorb external heat to evaporate into low-pressure gas, thereby achieving the purpose of refrigeration. In other embodiments, the refrigeration assembly 2 can also adopt absorption refrigeration or magnetic refrigeration technology, and the present disclosure does not make specific limitations in this regard.

[0029] According to an exemplary embodiment of the present disclosure, referring to FIG. 3, the refrigeration assembly 2 can comprise a heat pump 26, and the heat pump 26 can be connected to the dynamic reactive power compensation device 1 through the air supply duct 3 and the air return duct 4 to form a closed loop. Figures 2 to 4As shown in FIG. 1, the inner wall of the air supply pipeline 3 and / or the air return pipeline 4 is provided with a heat insulation layer. In the above technical solution, in order to reduce the heat exchange between the air supply pipeline 3 or the air return pipeline 4 and the outside, the heat insulation layer can be arranged on the inner wall of the air supply pipeline 3 or the air return pipeline 4. Specifically, the heat insulation layer can be a ternary ethylene-propylene rubber layer. In other embodiments, the heat insulation layer can also be other heat insulation materials, which are not limited in the present disclosure.

[0030] In order to improve the strength of the air supply pipeline 3 or the air return pipeline 4, the outer wall of the air supply pipeline 3 and / or the air return pipeline 4 is provided with a protective layer. Specifically, the protective layer can be a galvanized sheet. In other embodiments, the protective layer can also be other materials, which are not limited in the present disclosure.

[0031] According to the exemplary embodiments of the present disclosure, referring to Figure 1 As shown in FIG. 1, the cooling device can further include a dehumidifying device 5 arranged in the housing 11. The dehumidifying device 5 can dehumidify and dry the air in the dynamic reactive power compensation device 1, reducing the occurrence of circuit failure. Among them, the dehumidifying device 5 can select any suitable dehumidifier in the prior art, which is not limited in the present disclosure.

[0032] According to the exemplary embodiments of the present disclosure, referring to Figures 2 to 4 As shown in FIG. 1, the cooling device can further include an air filter screen 6 arranged at the hot air inlet 21 and / or the cold air outlet 22. In the above technical solution, the air filter screen 6 can filter and purify the air entering the inside of the cooling device or the air flowing out of the cooling device, thereby reducing the failure rate of the dynamic reactive power compensation device 1. Among them, the air filter screen 6 can be arranged only at the hot air inlet 21 or the cold air outlet 22, or can be arranged at the hot air inlet 21 or the cold air outlet 22 at the same time, which is not limited in the present disclosure.

[0033] On the basis of the above technical solution, the present disclosure further provides a dynamic reactive power compensation device 1, which includes a housing 11 having two opposite side walls, one of which is provided with an air inlet 12, and the other of which is provided with an air outlet 13. The top of the housing 11 is provided with the above-mentioned cooling device. The air outlet 13 is connected with the hot air inlet 21 of the cooling device through the air return pipeline 4, and the air inlet 12 is connected with the cold air outlet 22 of the cooling device through the air supply pipeline 3. The dynamic reactive power compensation device 1 provided by the present disclosure also has the above-mentioned characteristics. In order to avoid repetition, it will not be described here.

[0034] According to the exemplary embodiments of the present disclosure, referring to Figure 4 and Figure 5As shown in the drawings, the number of air inlets 12 is multiple, the air supply pipeline 3 has an air supply main pipeline 31 and multiple air supply branch pipelines 32, one end of the air supply main pipeline 31 is communicated with the cold air outlet 22, the other end of the air supply main pipeline 31 is connected with one end of the multiple air supply branch pipelines 32, and the other end of the multiple air supply branch pipelines 32 is communicated with the multiple air inlets 12 one by one; and / or, the number of air outlets 13 is multiple, the air return pipeline 4 has an air return main pipeline 41 and multiple air return branch pipelines 42, one end of the air return main pipeline 41 is communicated with the hot air inlet 21, the other end of the air return main pipeline 41 is connected with one end of the multiple air return branch pipelines 42, and the other end of the multiple air return branch pipelines 42 is communicated with the multiple air outlets 13 one by one.

[0035] In the above technical solution, the multiple air inlets 12 are arranged on the shell 11 and communicated with the cold air outlet 22 through the multiple air supply branch pipelines 32, so that the air amount entering the shell 11 of the reactive power dynamic compensation device is more uniform. Similarly, the multiple air outlets 13 are arranged on the shell 11 and communicated with the hot air inlet 21 through the multiple air return branch pipelines 42, so that the air entering the cooling equipment is more uniform, thereby facilitating to improve the air flowability in the reactive power dynamic compensation device and improve the cooling effect of the reactive power dynamic compensation device.

[0036] Reference Figures 1 to 5 As shown in the drawings, the specific implementation principle of the embodiment of the present disclosure is that the hot air emitted by the dynamic reactive power compensation device 1 is discharged from the air outlet 13, enters the cooling equipment from the hot air inlet 21 through the air return pipeline 4, the cooling equipment cools and processes the hot air into cold air, and the cold air flows into the shell 11 from the cold air outlet 22 through the air supply pipeline 3, thereby realizing cooling and heat dissipation for the dynamic reactive power compensation device 1. At the same time, since the cooling equipment and the dynamic reactive power compensation device 1 form a closed internal circulation, external air cannot enter, so that the water vapor and dust in the air cannot enter the inside of the dynamic reactive power compensation device 1 to cause pollution. In addition, the dehumidification device 5 can dehumidify the air in the dynamic reactive power compensation device 1, and the air filter screen 6 can filter and remove dust from the air in the dynamic reactive power compensation device 1, thereby reducing the failure rate of the dynamic reactive power compensation device 1 and improving the stability of the dynamic reactive power compensation device 1.

[0037] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0038] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the present disclosure.

[0039] Furthermore, any combination of various embodiments of the present disclosure can be made, as long as it does not deviate from the idea of the present disclosure, and it should be considered as disclosed in the present disclosure.

Claims

1. A dynamic reactive power compensation device comprising a cooling device for cooling of the dynamic reactive power compensation device, the dynamic reactive power compensation device comprising a housing having an air inlet and an air outlet, characterized in that, The cooling device comprises: a refrigeration assembly having a hot air inlet and a cold air outlet; an air supply pipeline, one end of which is connected to the cold air outlet, and the other end is used for connecting the air inlet; and an air return pipeline, one end of which is connected to the hot air inlet, and the other end is used for connecting the air outlet, the number of air inlets is multiple, the air supply pipeline has an air supply main pipeline and multiple air supply branch pipelines, one end of the air supply main pipeline is in communication with the cold air outlet, the other end of the air supply main pipeline is connected to one end of multiple air supply branch pipelines, and the other ends of the multiple air supply branch pipelines are in one-to-one correspondence with the multiple air inlets respectively; and / or, the number of air outlets is multiple, the air return pipeline has an air return main pipeline and multiple air return branch pipelines, one end of the air return main pipeline is connected to the hot air inlet, the other end of the air return main pipeline is connected to one end of multiple air return branch pipelines, and the other ends of the multiple air return branch pipelines are in one-to-one correspondence with the multiple air outlets respectively.

2. The dynamic reactive compensation device of claim 1, wherein, The refrigeration assembly further comprises an evaporator, a compressor, a condenser and a throttling valve, which are connected in sequence by pipelines to form a closed loop, and the compressor is used to circulate refrigerant in the closed loop.

3. The dynamic reactive compensation device of claim 1, wherein, The inner wall of the air supply pipeline and / or the air return pipeline is provided with a heat insulation layer.

4. The dynamic reactive compensation device of claim 3, wherein, The heat insulation layer is a ternary ethylene-propylene rubber layer.

5. The dynamic reactive compensation device of claim 1, wherein, The outer wall of the air supply pipeline and / or the air return pipeline is provided with a protective layer.

6. The dynamic reactive compensation device of claim 5, wherein, The protective layer is a galvanized sheet.

7. The dynamic reactive compensation device, as claimed in claim 1, wherein, The cooling device further comprises a dehumidifying device arranged in the shell.

8. The dynamic reactive compensation device, as claimed in claim 1, wherein, The cooling device further comprises an air filter screen arranged at the hot air inlet and / or the cold air outlet.

9. The dynamic reactive compensation device, as claimed in claim 1, wherein, The cooling device comprises a shell having two opposite side walls, an air inlet is arranged on one side wall, and an air outlet is arranged on the other side wall, a cooling device is arranged at the top of the shell, the air outlet is connected to the hot air inlet of the cooling device through the air return pipeline, and the air inlet is connected to the cold air outlet of the cooling device through the air supply pipeline.

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