CN216253647U - Direct current converter valve evaporation cooling system - Google Patents
Direct current converter valve evaporation cooling system Download PDFInfo
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- CN216253647U CN216253647U CN202122082153.3U CN202122082153U CN216253647U CN 216253647 U CN216253647 U CN 216253647U CN 202122082153 U CN202122082153 U CN 202122082153U CN 216253647 U CN216253647 U CN 216253647U
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Abstract
The utility model provides an evaporative cooling system of a direct-current converter valve, which comprises a converter valve, a cooling system and a control system, wherein the converter valve comprises a plurality of power valve banks; an evaporation assembly located inside a converter valve; the circulating assemblies are fixedly connected to two sides of the evaporation assembly, and the circulating assemblies and the evaporation assembly form a closed loop; the device uses fluorinated liquid as the cooling medium, and conducts a large amount of heat generated by the operation of the power device to the environment rapidly through the evaporation-condensation self-circulation phase change flowing of the cooling medium in a cooling system pipeline, thereby realizing high-efficiency cooling. Compared with a pure water cooling system, the evaporative cooling system has a simple structure, and a cooling medium of the evaporative cooling system has high insulativity, is not easy to corrode and leak, and is favorable for stable maintenance of the system.
Description
Technical Field
The utility model relates to the technical field of cooling of heating elements, in particular to an evaporative cooling system of a direct-current converter valve.
Background
At present, with the development of the power industry, the heat flux density of typical high-power equipment (such as high-end converter valves and IGBT devices) is close to hundred watts per square centimeter, and the requirement on the performance of a heat dissipation system is very strict. The cooling technologies applied to the converter valve cooling system at present mainly include an air cooling system and a pure water cooling system. The air cooling system has simple structure, large volume, large noise and low heat dissipation phase rate. The pure water cooling system is the mainstream technical scheme at present, and cooling efficiency is higher, but the water cooling system needs to dispose water treatment system, and sealing joint is many, has the deionization to dissolve electrically conductive and local boiling and produces the bubble, and problem such as maintenance cost height.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.
Therefore, the utility model aims to solve the technical problems of complex system equipment composition and control and protection system and system stability such as corrosion and leakage caused by deionized dissolution and electric conduction of a cooling medium in the pure water cooling system of the converter valve in the prior art, and provides the direct-current converter valve evaporative cooling system.
In order to solve the technical problems, the utility model provides the following technical scheme: a direct current converter valve evaporative cooling system comprises a converter valve, a first cooling system and a second cooling system, wherein the converter valve comprises a plurality of power valve banks; the cooling assembly comprises an evaporation assembly, a circulation assembly and a cooling medium, and the evaporation assembly is positioned inside the converter valve; the circulation assembly is fixedly connected to two sides of the evaporation assembly, and the circulation assembly and the evaporation assembly form a closed loop; the cooling medium flows in a closed loop formed by the circulating assembly and the evaporation assembly.
As a preferable scheme of the direct current converter valve evaporative cooling system of the present invention, wherein: the power valve group comprises ten layers of valve modules, wherein the ten layers of valve modules are formed by connecting branch pipelines in parallel, and each layer of valve module is formed by connecting thin water pipe branches in series.
As a preferable scheme of the direct current converter valve evaporative cooling system of the present invention, wherein: the evaporation assembly comprises an evaporator body, a water inlet, a water outlet and evaporator branch pipes, the water inlet is located at the lower portion of the evaporator body, the water outlet is located at the upper portion of the evaporator body, and the water inlet and the water outlet are connected with the circulation assembly through the evaporator branch pipes.
As a preferable scheme of the direct current converter valve evaporative cooling system of the present invention, wherein: the evaporator body comprises a shell and an internal flow passage arranged in the shell, and the water inlet and the water outlet are communicated with the internal flow passage in the evaporator body.
As a preferable scheme of the direct current converter valve evaporative cooling system of the present invention, wherein: the internal flow passage is composed of a plurality of channels arranged in parallel.
As a preferable scheme of the direct current converter valve evaporative cooling system of the present invention, wherein: the evaporator body is mutually attached to the power device in the valve module.
As a preferable scheme of the direct current converter valve evaporative cooling system of the present invention, wherein: the circulation assembly comprises an air-cooled condenser, a liquid storage tank and a circulation pipeline, and the air-cooled condenser, the liquid storage tank and the evaporation assembly form a closed loop through the circulation pipeline.
As a preferable scheme of the direct current converter valve evaporative cooling system of the present invention, wherein: and the circulating pipeline is fixedly connected with a temperature transmitter, a pressure transmitter and a flow transmitter.
As a preferable scheme of the direct current converter valve evaporative cooling system of the present invention, wherein: the cooling medium is fluorinated liquid.
As a preferable scheme of the direct current converter valve evaporative cooling system of the present invention, wherein: the liquid storage tank is a closed liquid storage tank, and a heat insulation material is arranged outside the liquid storage tank.
The utility model has the beneficial effects that:
the device uses the fluorinated liquid as a cooling medium, and the heat generated by the operation of the power device is greatly and quickly conducted to the environment through the evaporation-condensation self-circulation phase change flow of the cooling medium in a cooling system pipeline, so that the high-efficiency cooling is realized. Compared with a pure water cooling system, the evaporative cooling system has a simple structure, and a cooling medium of the evaporative cooling system has high insulativity, is not easy to corrode and leak, and is favorable for stable maintenance of the system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic view of a converter valve and cooling assembly position;
FIG. 2 is a schematic view of the overall structure of the evaporative cooling apparatus;
FIG. 3 is a schematic view of the overall structure of the evaporator;
fig. 4 is a schematic sectional view of the internal structure of the evaporator.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Example 1
The embodiment provides an evaporative cooling system for a direct current converter valve, as shown in fig. 1 to 3,
the device comprises a converter valve 100, wherein the converter valve 100 comprises a plurality of power valve groups 101; and a cooling assembly 500, the cooling assembly 500 comprising an evaporation assembly 200, a circulation assembly 300 and a cooling medium 400, the evaporation assembly 200 being located inside the converter valve 100; the circulation assembly 300 is fixedly connected to two sides of the evaporation assembly 200, and the circulation assembly 300 and the evaporation assembly 200 form a closed loop; the cooling medium 400 flows in a closed circuit formed by the circulation assembly 300 and the evaporation assembly 200. The power valve group 101 comprises a plurality of layers of valve modules 101a, the plurality of layers of valve modules 101a are formed by connecting branch pipes in parallel, and each layer of valve module 101a is formed by connecting branch pipes of a thin water pipe in series.
The converter valve 100 can generate a large amount of heat in the working process, heating components of the converter valve 100 are located in valve modules 101a inside the converter valve 100, every two valve modules 101a in the converter valve 100 are arranged in one layer, each layer of valve modules 101a is formed by connecting the valve modules 101a in series, every ten layers of valve modules 101a are arranged in one group, all layers of valve modules 101a are connected in parallel, each valve module 101a is provided with an evaporation component 200, the evaporation components 200 and power devices in the valve modules 101a are attached to one wall, so that every two evaporation components 200 are arranged in one layer and are formed by connecting evaporator branch pipes 204 in series, every ten layers of evaporation components 200 are arranged in one group, and all the evaporation components 200 are connected in parallel by the evaporator branch pipes 204.
The cooling medium 400 is arranged in a closed loop formed by the circulation component 300 and the evaporation component 200, the cooling medium 400 absorbs heat in the evaporation component 200 and then changes from a liquid phase to a gas phase, heat in the converter valve 100 is taken into the circulation component 300 through the evaporator branch pipe 204, high-temperature steam is discharged to air in the circulation component 300, and the cooling medium 400 changes from the gas phase to the liquid phase and then returns to the inside of the evaporation component 200 for next round of temperature reduction.
The evaporation assembly 200 comprises an evaporator body 201, a water inlet 202, a water outlet 203 and an evaporator branch pipe 204, wherein the water inlet 202 is positioned at the lower part of the evaporator body 201, the water outlet 203 is positioned at the upper part of the evaporator body 201, and the water inlet 202 and the water outlet 203 are connected with the circulation assembly 300 through the evaporator branch pipe 204. The evaporator body 201 comprises a shell 201a and an internal flow passage 201b installed in the shell 201a, and the water inlet 202 and the water outlet 203 are communicated with the internal flow passage 201b inside the evaporator body 201.
The water inlet 202 is arranged below the evaporator body 201, the water outlet 203 is arranged above the evaporator body 201, and the internal flow channel 201b is distributed to cover the heating surface of the power device, so that high-temperature liquid generated by heat absorption of the cooling medium 400 and high-temperature gas generated by phase change in the internal flow channel 201b have lower density, and upward power is generated, so that the cooling medium 400 in the circulating pipeline 303 forms a circulating flow.
The circulation assembly 300 comprises an air-cooled condenser 301, a liquid storage tank 302 and a circulation pipeline 303, wherein the air-cooled condenser 301, the liquid storage tank 302 and the evaporation assembly 200 form a closed loop through the circulation pipeline 303. The air-cooled condenser 301 is an air cooler device, and can exchange heat between high temperature in the gas-phase cooling medium and outside air, so that the gas-phase cooling medium releases heat to generate phase change, becomes liquid, and then the liquid flows back to the liquid storage tank 302.
A temperature transmitter 303a, a pressure transmitter 303b and a flow transmitter 303c are fixedly connected to the circulating pipe 303. The temperature transmitter 303a can change the temperature in the circulating pipe 303 into an electric signal and transmit the electric signal to the control center, the pressure transmitter 303b changes the pressure in the circulating pipe 303 into an electric signal and transmits the electric signal to the control center, and the flow transmitter 303c changes the flow value in the circulating pipe 303 into an electric signal and transmits the electric signal to the control center, so that an operator can conveniently monitor the actual working state of the evaporative cooling device in real time.
The cooling medium 400 is a fluorinated liquid, and the fluorinated liquid has physical characteristics of high insulation, low boiling point and low freezing point, is not easy to generate corrosion leakage, and is beneficial to stable maintenance of a system.
The liquid storage tank 302 is a closed liquid storage tank, and a heat insulation material is arranged outside the liquid storage tank 302.
Example 2
The present embodiment provides a dc converter valve evaporative cooling system, as shown in figure 4,
the parts which are different from the embodiment 1 and are based on the embodiment 1 are as follows:
the internal flow channel 201b is composed of a plurality of parallel channels 201b-1, the surfaces of the channels 201b-1 are processed through a coarse grinding processing technology, certain roughness can be kept on the surfaces of the channels, the generation of nucleate boiling of the cooling medium 400 in the internal flow channel 201b is accelerated by utilizing a micro-scale composite phase change enhanced heat exchange mechanism, a thermal boundary layer is effectively damaged, and the heat exchange coefficient and the heat exchange efficiency are improved. The evaporative cooling device adopts an up-and-down structure, the air-cooled condenser 301 and the liquid storage tank 302 are installed above the converter valve 100, when the converter valve 100 works, the power device works and generates heat, the cooling medium 400 in the evaporator body 201 absorbs heat and changes into vapor, the fluid density difference generated by the temperature difference provides the circulating power of the cooling medium 400 in the circulating pipeline 303, and the heat generated by the power device is taken out of the converter valve 100. The high-temperature vapor-liquid cooling medium 400 flows to the air-cooled condenser 301 through the circulating pipeline 303 to be subjected to heat release condensation to form low-temperature liquid, and the low-temperature liquid enters the liquid storage tank 302. And then enters the evaporation assembly 200 in the converter valve 100 device through the circulating pipeline 303 to continuously dissipate heat of the power device.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the utility model, or those unrelated to enabling the utility model).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a direct current change of current valve evaporative cooling system which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a converter valve (100), said converter valve (100) comprising several power valve groups (101); and the number of the first and second groups,
a cooling assembly (500), the cooling assembly (500) comprising an evaporation assembly (200), a circulation assembly (300) and a cooling medium (400), the evaporation assembly (200) being located inside a converter valve (100); the circulation assembly (300) is fixedly connected to two sides of the evaporation assembly (200), and the circulation assembly (300) and the evaporation assembly (200) form a closed loop; the cooling medium (400) flows in a closed loop formed by the circulating assembly (300) and the evaporation assembly (200).
2. The direct current converter valve evaporative cooling system of claim 1, wherein: the power valve group (101) comprises a plurality of layers of valve modules (101a), the valve modules (101a) are formed by connecting branch pipelines in parallel, and each layer of the valve modules (101a) is formed by connecting water pipe branches in series.
3. The dc converter valve evaporative cooling system of claim 1 or 2, wherein: the evaporation assembly (200) comprises an evaporator body (201), a water inlet (202), a water outlet (203) and an evaporator branch pipe (204), wherein the water inlet (202) is located at the lower part of the evaporator body (201), the water outlet (203) is located at the upper part of the evaporator body (201), and the water inlet (202) and the water outlet (203) are connected with the circulation assembly (300) through the evaporator branch pipe (204).
4. The direct current converter valve evaporative cooling system of claim 3, wherein: the evaporator body (201) comprises a shell (201a) and an internal flow channel (201b) installed in the shell (201a), and the water inlet (202) and the water outlet (203) are communicated with the internal flow channel (201b) inside the evaporator body (201).
5. The direct current converter valve evaporative cooling system of claim 4, wherein: the internal flow passage (201b) is composed of a plurality of channels (201b-1) which are arranged in parallel.
6. The dc converter valve evaporative cooling system of claim 3, wherein: the evaporator body (201) and the power device in the valve module (101a) are mutually attached.
7. The direct current converter valve evaporative cooling system of any one of claims 1, 2, 4, 5 and 6, wherein: circulation subassembly (300) include air-cooled condenser (301), liquid storage pot (302) and circulating line (303), closed circuit is constituteed through circulating line (303) in air-cooled condenser (301), liquid storage pot (302) and evaporation subassembly (200).
8. The dc converter valve evaporative cooling system of claim 7, wherein: and the circulating pipeline (303) is fixedly connected with a temperature transmitter (303a), a pressure transmitter (303b) and a flow transmitter (303 c).
9. The direct current converter valve evaporative cooling system of claim 1, wherein: the cooling medium (400) is a fluorinated liquid.
10. The dc converter valve evaporative cooling system of claim 7, wherein: the liquid storage tank (302) is a closed liquid storage tank, and heat insulation materials are arranged outside the liquid storage tank (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122082153.3U CN216253647U (en) | 2021-08-31 | 2021-08-31 | Direct current converter valve evaporation cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122082153.3U CN216253647U (en) | 2021-08-31 | 2021-08-31 | Direct current converter valve evaporation cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216253647U true CN216253647U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122082153.3U Active CN216253647U (en) | 2021-08-31 | 2021-08-31 | Direct current converter valve evaporation cooling system |
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| CN (1) | CN216253647U (en) |
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- 2021-08-31 CN CN202122082153.3U patent/CN216253647U/en active Active
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