Auxiliary sprayer for external air cooling of direct current converter station

A DC converter station and sprinkler technology, which is applied in the direction of cooling/ventilation/heating transformation, can solve the problems of cooling water waste, accelerated aging of internal components, and affecting the service life of converter valves, etc., to achieve good cooling and good suction The effect of thermal effects

Active Publication Date: 2022-07-12
国网湖北省电力有限公司直流公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The converter valve is the core equipment of the DC transmission project. When the converter valve is working, the three-phase AC voltage is connected to the DC terminal in sequence to obtain the desired DC voltage and realize power control. The converter valve will generate during the working process. A large amount of heat, because there are a large number of circuit components inside the converter valve, if the heat is not dissipated in time, the aging of its internal components will be accelerated, thus affecting the service life of the converter valve
[0003] The cooling system of the converter valve generally includes internal circulating cold water and external air cooling. The Chinese patent application number: CN201020227197.X discloses an auxiliary spraying device for external air cooling of DC converter stations. It eliminates the defect of insufficient cooling capacity of the external air-cooling system of the DC converter station in extremely high-temperature weather in summer, ensures the normal operation of the valve cooling system, and ensures the safety and reliability of the converter station
[0004] The above-mentioned patent cools the external air cold water pipeline by spraying, but there are some disadvantages when it is used. The external air cold water pipeline is cooled by cooling water spraying. The means of cooling is relatively simple, and the effect of cooling is not good. Well, after cooling down, the cooling water flows out, which will lead to waste of cooling water

Method used

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  • Auxiliary sprayer for external air cooling of direct current converter station
  • Auxiliary sprayer for external air cooling of direct current converter station
  • Auxiliary sprayer for external air cooling of direct current converter station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An auxiliary sprinkler for air cooling outside a DC converter station, comprising a converter valve housing 1, the converter valve housing 1 is used to install the converter valve, and also includes an air cooling cabinet 2, a pumping device, a water cooling device, air-cooled device and drive device;

[0035] The air-cooled cabinet 2 is located on the right side of the converter valve housing 1, and the bottom of the air-cooled cabinet 2 is fixedly fixed with a liquid storage tank 21 symmetrically. A partition 22 is fixed in the tank 21. The partition 22 divides the liquid storage tank 21 into an upper liquid storage cavity 23 and a lower pumping cavity 24. The side plates of the liquid storage tank 21 away from each other correspond to the pumping cavity 24. The pumping pipe 25 is evenly fixed in the longitudinal direction;

[0036] The pumping device is arranged in the pumping cavity 24, and the pumping devices on the left and right sides respectively transport the ...

Embodiment 2

[0049] On the basis of Embodiment 1, this embodiment discloses the specific technical features of the pumping device.

[0050] The pumping device includes a reciprocating screw 31 and a piston 32; the reciprocating screw 31 is connected to the pumping cavity 24 through a left-right symmetrical connecting shaft 33, and the head of the connecting shaft 33 near the center of the air-cooled cabinet 2 is fixed with a first driven The bevel gear 34, the driving device is used to drive the first driven bevel gear 34 to rotate, a guide rod 35 is also fixed in the pumping cavity 24, the piston 32 is sealed and slidably connected in the pumping cavity 24, and the piston 32 and the reciprocating screw rod 31 Meshing and sliding connection with the guide rod 35, the position close to the pumping pipe 25 on the partition plate 22 is evenly fixed with a liquid suction pipe 36 longitudinally, and the position away from the pumping pipe 25 on the partition plate 22 is longitudinally uniformly ...

Embodiment 3

[0054] On the basis of Embodiment 2, this embodiment discloses the specific technical features of the water distribution frame 51,

[0055] The interior of the water distribution frame 51 is fixedly connected with connecting rods 511 in a crisscross pattern. The connecting rods 511 divide the interior of the water distribution frame 51 into several spray spaces, and each spray space is fixed with a grille mesh 512. The connecting rods The intersection position of 511 is fixed with a swivel base 513, the rotating shaft 53 is rotatably connected in the swivel base 513, and the end of the rotating shaft 53 away from the fan blade group 54 is fixed with a second driven bevel gear 514, the driving device is used to drive the second driven The bevel gear 514 rotates, the top plate of the water distribution frame 51 is provided with a transfer cavity 515 , the bottom of the transfer cavity 515 is provided with a water drop hole 516 , and the heads of the pumping pipes 25 on the right ...

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Abstract

The invention discloses an auxiliary sprayer for external air cooling of a direct-current converter station, and the auxiliary sprayer comprises a converter valve shell in which a converter valve is mounted, and further comprises an air cooling cabinet, a pumping device, a water cooling device, an air cooling device and a driving device.The auxiliary sprayer has the beneficial effects that the driving device provides power for the pumping device and a fan blade group, and the fan blade group is driven by the driving device to drive the fan blade group to rotate; when the pumping device on the left side works, cooling oil is driven to flow in the water cooling device, the cooling oil absorbs heat in a converter valve shell at the position of the heat absorption pipe, when the pumping device on the right side works, cooling water is pumped to the position of the water distribution frame, and cold air is blown to the water distribution frame through rotation of the fan blade set. And cold air is mixed with water on the water distribution frame to be in an atomized state and acts on the cooling pipe, so that the cooling oil liquid can be well cooled at the position of the cooling pipe, the cooling oil liquid entering the heat absorption pipe has a lower temperature, and a good heat absorption effect is achieved.

Description

technical field [0001] The invention relates to the technical field of converter valve cooling used in a DC converter station, in particular to an auxiliary sprayer used for air cooling outside a DC converter station. Background technique [0002] The converter valve is the core equipment of the DC power transmission project. When the converter valve is working, the three-phase AC voltage is connected to the DC terminal in turn to obtain the desired DC voltage and realize the control of power. A large amount of heat, because there are a large number of circuit components inside the converter valve, if it is not dissipated in time, the aging of its internal components will be accelerated, thereby affecting the service life of the converter valve. [0003] The cooling system of the converter valve generally includes the internal circulating cold water and the external air cooling. The Chinese patent application number: CN201020227197.X discloses an auxiliary spray device for t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20
CPCH05K7/20218H05K7/20272H05K7/20145H05K7/20136Y02E60/60
Inventor 李涛黄巨兰泳文程术王利琴林益茂彭浩郭帅陈豪
Owner 国网湖北省电力有限公司直流公司
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