CN205544884U - Change of current valve cooling system based on liquid metal - Google Patents
Change of current valve cooling system based on liquid metal Download PDFInfo
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- CN205544884U CN205544884U CN201620035191.XU CN201620035191U CN205544884U CN 205544884 U CN205544884 U CN 205544884U CN 201620035191 U CN201620035191 U CN 201620035191U CN 205544884 U CN205544884 U CN 205544884U
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- liquid metal
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- heat exchanger
- cooling system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
本实用新型提供了一种基于液态金属的换流阀冷却系统，包括依次连接的液态金属散热器、第一换热器和第二换热器；液态金属散热器包括设置在其内部空腔中的液态金属管道；第一换热器包括设置在其内部空腔中的第一管道和第二管道；第二换热器包括设置在其内部空腔中的第三管道；液态金属管道与第一管道连接，形成液态金属的循坏回路；第二管道与第三管道连接，形成去离子水循环回路。与现有技术相比，本实用新型提供的一种基于液态金属的换流阀冷却系统，由于液态金属具有极强的导热能力，可以迅速将换流阀的热量带走，再通过外部的换热器将热量最终扩散到空气中，可以减少热量在热源处的累积，从而降低热源处的温度。
The utility model provides a cooling system for a diverter valve based on liquid metal, which comprises a liquid metal radiator, a first heat exchanger and a second heat exchanger connected in sequence; the liquid metal radiator includes a The liquid metal pipe; the first heat exchanger includes a first pipe and a second pipe arranged in its inner cavity; the second heat exchanger includes a third pipe arranged in its inner cavity; the liquid metal pipe and the first The first pipe is connected to form a circulation circuit of liquid metal; the second pipe is connected to the third pipe to form a deionized water circulation circuit. Compared with the prior art, the utility model provides a converter valve cooling system based on liquid metal, because the liquid metal has a strong thermal conductivity, it can quickly take away the heat of the converter valve, and then through the external converter The heater diffuses the heat into the air, which can reduce the accumulation of heat at the heat source, thereby reducing the temperature at the heat source.
Description
Technical Field
The utility model relates to a power semiconductor device technical field, concretely relates to change of current valve cooling system based on liquid metal.
Background
In recent years, the ultrahigh voltage direct current transmission market at home and abroad is developed rapidly, and the market prospect is very wide. The converter valve is used as core equipment of an extra-high voltage direct current transmission project and is a core functional unit for realizing alternating current and direct current conversion, and the performance of the conversion performance of the converter valve is directly influenced by the cooling effect of a cooling system in the valve body. Poor heat dissipation of the converter valve element can not only cause the element to be damaged due to overheating, but also cause shutdown of a direct current system in severe cases. Therefore, converter valve cooling systems have an important role in dc power transmission systems, requiring very high reliability.
Deionized water has good characteristics of high specific heat, high thermal conductivity, high resistivity and the like, and is widely used as a cooling agent for a converter valve in direct-current transmission engineering. Although the application of the water cooling system is relatively wide, the heat dissipation capacity of the water cooling system is limited, the typical heat dissipation capacity of the water cooling system is 30W/cm 2-50W/cm 2, with the rise of the global energy Internet, the power transmitted by a power grid is larger and larger, the power density of a converter valve is also greatly increased, and the formed large heat flow density provides higher heat dissipation requirements for the cooling system. Therefore, how to reduce the temperature of the power device under a certain structural condition and improve the heat dissipation performance of the converter valve cooling system is particularly important for improving the reliability of the power device and the converter valve, and therefore a more efficient heat dissipation mode needs to be developed.
Disclosure of Invention
In order to satisfy the needs of prior art, develop a more efficient radiating mode, the utility model provides a change of current valve cooling system based on liquid metal.
The technical scheme of the utility model is that:
the system comprises a liquid metal radiator, a first heat exchanger and a second heat exchanger which are connected in sequence;
the liquid metal radiator comprises a liquid metal pipeline arranged in an inner cavity of the liquid metal radiator;
The first heat exchanger comprises a first pipeline and a second pipeline which are arranged in an inner cavity of the first heat exchanger;
the second heat exchanger comprises a third conduit disposed in an interior cavity thereof;
the liquid metal pipeline is connected with the first pipeline to form a circulating loop of the liquid metal; the second pipeline is connected with the third pipeline to form a deionized water circulation loop.
Preferably, the first and second liquid crystal materials are,
the outlet of the liquid metal pipeline is directly connected with the inlet of the first pipeline, and the high-temperature liquid metal output by the liquid metal pipeline is transmitted to the first pipeline;
the outlet of the first pipeline is connected with the inlet of the liquid metal pipeline through an electromagnetic pump, and the electromagnetic pump drives the low-temperature liquid metal output by the first pipeline to be transmitted to the liquid metal pipeline;
the outlet of the second pipeline is connected with the inlet of the first pipeline through a water pump, the water pump drives the low-temperature deionized water output by the second pipeline to be transmitted to the first pipeline, and the high-temperature liquid metal and the low-temperature deionized water are subjected to heat exchange.
Preferably, the first and second liquid crystal materials are,
the second heat exchanger is a cooling water tower;
the heat of the deionized water in the first pipeline is transferred to the air through the cooling water tower.
Preferably, the first and second liquid crystal materials are,
The second heat exchanger is a metal block provided with radiating fins;
the heat of the deionized water in the first pipeline is transferred to the air through the radiating fins.
Preferably, the liquid metal is gallium-based alloy, and the melting point of the gallium-based alloy is not higher than 30 ℃.
Compared with the closest prior art, the utility model discloses an excellent effect is:
1. the utility model provides a converter valve cooling system based on liquid metal, because liquid metal has extremely strong heat-conducting capacity, can take away the heat of converter valve rapidly, and the rethread outside heat exchanger finally spreads the heat to the air, can reduce the heat and accumulate in the heat source department to reduce the temperature of heat source department;
2. compared with a water cooling system, the converter valve cooling system based on the liquid metal can effectively reduce the working temperature of power electronic devices and improve the reliability of a heat dissipation system;
3. the utility model provides a pair of converter valve cooling system based on liquid metal, based on its efficient radiating efficiency, the converter valve can work under higher voltage, current level for can promote power transmission device's operating capacity under the prerequisite that does not increase power electronics device quantity.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1: the embodiment of the utility model provides an embodiment is based on converter valve cooling system structure sketch map of liquid metal;
wherein, 1: a liquid metal heat sink; 2: a first heat exchanger; 3: a second heat exchanger; 4: an electromagnetic pump; 5: low temperature liquid metal; 6: high temperature liquid metal; 7: high-temperature deionized water; 8: low-temperature deionized water; 9: and (4) a water pump.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements or elements having the same function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The utility model provides a pair of converter valve cooling system's embodiment based on liquid metal is shown in figure 1, specifically is:
the cooling system comprises a liquid metal radiator 1, a first heat exchanger 2 and a second heat exchanger 3 which are connected in sequence. Wherein,
the method comprises the following steps: the liquid metal heat sink 1 comprises a liquid metal pipe arranged in its inner cavity.
Secondly, the step of: the first heat exchanger 2 comprises a first pipe and a second pipe arranged in its inner cavity.
③: the second heat exchanger 3 comprises a third conduit arranged in its inner cavity.
1. The liquid metal pipeline is connected with the first pipeline to form a circulation loop of the liquid metal
The outlet of the liquid metal pipeline is directly connected with the inlet of the first pipeline, high-temperature liquid metal 6 output by the liquid metal pipeline is transmitted to the first pipeline, the outlet of the first pipeline is connected with the inlet of the liquid metal pipeline through an electromagnetic pump, and the electromagnetic pump 4 drives low-temperature liquid metal 5 output by the first pipeline to be transmitted to the liquid metal pipeline; the outlet of the second pipeline is connected with the inlet of the first pipeline through a water pump 9, and the water pump drives the low-temperature deionized water 8 output by the second pipeline to be transmitted to the first pipeline. In this embodiment, the high-temperature liquid metal 6 refers to a liquid metal with a temperature increased after absorbing heat emitted from the converter valve, and the low-temperature liquid metal 5 refers to a liquid metal with a temperature decreased after the heat exchange between the high-temperature liquid metal and the low-temperature deionized water 8.
The method comprises the following steps: the transmission speed of the low-temperature liquid metal is adjusted by changing the intensity of the magnetic field or the current value output by the electromagnetic pump 4. The electromagnetic pump provides a pair of vertically crossed magnetic fields and currents for the liquid metal in the pipeline receives electromagnetic force along the direction of the pipeline, so that the liquid metal is pushed to flow in the pipeline, the stressed size of the liquid metal is adjusted by changing the intensity of the magnetic field or the current, the flow speed of the liquid metal is adjusted, and the purpose of adjusting the heat dissipation effect is achieved.
Secondly, the step of: the transmission speed of the low-temperature deionized water is adjusted by changing the rotating speed of the water pump 9, so that different heat dissipation effects are achieved.
The liquid metal radiator 1 is used for absorbing heat generated by the converter valve, and the liquid metal exchanges heat with the deionized water in the first pipeline, so that the high-temperature liquid metal 6 is exchanged into the low-temperature liquid metal 5 to flow back to the liquid metal radiator again. In this embodiment, the high temperature deionized water 7 refers to deionized water with a temperature increased after heat exchange with the high temperature liquid metal 6, and the low temperature deionized water 8 refers to deionized water with a temperature decreased after heat exchange with the second heat exchanger.
2. The second pipeline is connected with the third pipeline to form a deionized water circulation loop
The circulation loop is used for exchanging heat of the high-temperature deionized water 7 into low-temperature deionized water 8 and flowing back to the first heat exchanger.
When the second heat exchanger in this embodiment adopts a cooling tower:
the heat of the deionized water is transferred to the air through a cooling water tower.
When the second heat exchanger in this embodiment adopts the metal block provided with the radiating fin:
the heat of the internal deionized water is transferred to the air through the radiating fins.
The utility model discloses well converter valve cooling system's based on liquid metal working process does:
The heat generated by the operation of the converter valve is transferred to the liquid metal radiator which is in contact with the converter valve, the liquid metal flows through the inner cavity of the converter valve, so that the heat is taken away, the temperature of the liquid metal is increased, then the liquid metal enters the first heat exchanger, the liquid metal and the deionized water with lower temperature exchange heat in the first heat exchanger to reduce the temperature of the liquid metal, and then the liquid metal flows back to the liquid metal radiator again to perform the next circulation heat dissipation. Meanwhile, the temperature of the deionized water subjected to heat exchange with the liquid metal is increased, the deionized water is subjected to heat exchange with the outside through the second heat exchanger, the temperature of the deionized water is reduced, and then the deionized water flows back to the first heat exchanger again to perform next circulating heat dissipation, so that the heat exchange of the whole cooling system is realized, and the heat generated by the operation of the converter valve is transferred to the external environment.
Finally, it should be noted that: the described embodiments are only some embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620035191.XU CN205544884U (en) | 2016-01-14 | 2016-01-14 | Change of current valve cooling system based on liquid metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620035191.XU CN205544884U (en) | 2016-01-14 | 2016-01-14 | Change of current valve cooling system based on liquid metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205544884U true CN205544884U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620035191.XU Expired - Lifetime CN205544884U (en) | 2016-01-14 | 2016-01-14 | Change of current valve cooling system based on liquid metal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529906A (en) * | 2016-01-14 | 2016-04-27 | 国网智能电网研究院 | Liquid metal based converter valve cooling system |
| CN106533131A (en) * | 2016-11-18 | 2017-03-22 | 云南电网有限责任公司电力科学研究院 | DC converter valve with pulse excitation device |
-
2016
- 2016-01-14 CN CN201620035191.XU patent/CN205544884U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529906A (en) * | 2016-01-14 | 2016-04-27 | 国网智能电网研究院 | Liquid metal based converter valve cooling system |
| CN106533131A (en) * | 2016-11-18 | 2017-03-22 | 云南电网有限责任公司电力科学研究院 | DC converter valve with pulse excitation device |
| CN106533131B (en) * | 2016-11-18 | 2023-07-14 | 云南电网有限责任公司电力科学研究院 | A DC converter valve with pulse excitation device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20160831 |