An immersed thermoelectric refrigeration device for a DC converter valve

A DC converter valve, thermoelectric refrigeration technology, used in output power conversion devices, electrical components, cooling/ventilation/heating renovation, etc. The requirements for the normal operation of the converter valve, etc., achieve the effects of simple structure, good heat transfer performance, and improved environmental adaptability

Active Publication Date: 2017-06-06
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The closed cooling tower often forms a large amount of scale due to poor water quality. If the ambient temperature is too high, the heat transfer effect of the closed cooling tower will be poor, and the cooling medium temperature of the inlet valve cannot meet the normal operation requirements of the converter valve.

Method used

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  • An immersed thermoelectric refrigeration device for a DC converter valve
  • An immersed thermoelectric refrigeration device for a DC converter valve
  • An immersed thermoelectric refrigeration device for a DC converter valve

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Embodiment Construction

[0027] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] In this embodiment, an immersed thermoelectric refrigeration device for a DC converter valve is used as an example. Figure 1 to Figure 2 As shown in the figure, the submerged thermoelectric refrigeration device for a DC converter valve provided by the embodiment of the present invention includes: a water supply pump 1, a deionization system 2, a circulating water pump 3, a DC converter valve 4, an air cooler 5, a filter 6, three Through valve 7 , submerged thermoelectric refrigeration device 8 , hot end radiator 9 , cold end radiator 10 , commutator 11 , DC power supply 12 , and thermocouple stack 13 .

[0029] The DC transmission converter valve 4 device produces a large amount of heat loss during the AC-DC conversion process. The heat loss causes a small temperature difference between the outlet valve cooling medium and the...

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Abstract

The invention provides an immersed type thermoelectricity refrigeration device for a direct current converter valve. The device comprises a thermocouple pile arranged between a hot-end radiator and a cold-end radiator, wherein the hot-end radiator is arranged in a direct current converter valve water outlet pipeline of a direct current converter valve enclosed water cooling system, and the cold-end radiator is arranged in a water inlet pipeline of the direct current converter valve. The device is characterized in that the thermocouple pile is connected with a commutator and a direct current power source to form a loop. Compared with the prior art, the immersed type thermoelectricity refrigeration device for the direct current converter valve has advantages of excellent heat transfer performance, simple structure and convenient operation and can realize all-day-long control of in-valve water temperature.

Description

technical field [0001] The invention relates to a thermoelectric refrigeration device, in particular to a submerged thermoelectric refrigeration device for a DC converter valve. Background technique [0002] With the increasing maturity of high-voltage direct current transmission technology in my country, the construction of direct current transmission projects is in the golden period of development. In the HVDC transmission system, the cooling system is an important component of the converter valve cooling system, and its operation directly affects the transmission capacity of the entire HVDC system. Therefore, it is particularly important to ensure the stable, reliable and efficient operation of the cooling system. [0003] The closed water-cooling system is widely used in the cooling of DC transmission converter valves at present. The temperature resistance of the water-cooling system directly affects the climate and geographical environment of the converter valve. In p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/00H05K7/20
Inventor 魏晓光查鲲鹏周建辉汤广福文玉良冷明全柯加良
Owner STATE GRID CORP OF CHINA
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