Cooling system and wind power generator set

Patent metadata

Field	Value
Publication number	US-12510058-B2
Application number	US-202017997676-A
Country	US
Kind code	B2
Filing date	Sep 8, 2020
Priority date	Jun 9, 2020
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

The cooling system comprises a first cooling circuit for cooling a first heating component, a second cooling circuit for cooling a second heating component, a third cooling circuit for cooling a third heating component, a fourth cooling circuit for cooling a fourth heating component, a pump station unit, and a heat dissipation unit; the pump station unit comprises a pump group, a water separator, and a water collector, a water supply main is between the pump group and the water separator, and a water return main is between the pump group and the water collector; the pump group provides a cooling medium for the first, second, third and fourth cooling circuits via the water separator; the first cooling circuit is directly communicated with the water separator and the water collector; and the second, third and fourth cooling circuits are communicated with the water collector via the heat dissipation unit respectively.

First claim

What is claimed is:

1 . A cooling system, comprising: a first cooling circuit for cooling a first heat source, a second cooling circuit for cooling a second heat source, a third cooling circuit for cooling a third heat source, a fourth cooling circuit for cooling a fourth heat source, a pump station unit and a heat dissipation unit;
wherein the pump station unit comprises a pump group, a water distributor and a water collector, a main water supply pipe is arranged between the pump group and the water distributor, and a main water return pipe is arranged between the pump group and the water collector; the pump group provides a cooling medium for the first cooling circuit, the second cooling circuit, the third cooling circuit and the fourth cooling circuit via the water distributor; the first cooling circuit is directly communicated with the water distributor and the water collector, and the second cooling circuit, the third cooling circuit, and the fourth cooling circuit are respectively connected to the water collector via the heat dissipation unit; wherein the cooling system further comprises a heat exchanger via which the second cooling circuit and the third cooling circuit are thermally coupled with each other; wherein the third cooling circuit comprises a bypass; when a temperature of the second heat source is lower than a preset temperature, the cooling medium flows into the heat exchanger via the bypass of the third cooling circuit, to exchange heat with the cooling medium flowing into the second cooling circuit; wherein the heat exchanger comprises a first heat conduction channel and a second heat conduction channel spaced apart from each other; the first heat conduction channel comprises a first inlet end and a first outlet end, and the second heat conduction channel comprises a second inlet end and a second outlet end; a second water supply pipe of the second cooling circuit comprises a first section and a second section, the first section is connected to the first inlet end at its downstream, and the second section is connected to the first outlet end at its upstream; a water supply bypass pipe of the bypass is connected to the second inlet end, and a water return bypass pipe of the bypass is connected to the second outlet end.

2 . The cooling system according to claim 1 , wherein the first heat source has the smallest heat generation amount, the third heat source has the largest heat generation amount, and each of the second heat source and the fourth heat source has a heat generation amount between the heat generation amount of the first heat source and the heat generation amount of the third heat source.

3 . The cooling system according to claim 1 , wherein the pump group comprises one pump body or at least two pump bodies arranged in parallel;
an inlet of the pump group is provided with a filter and a pressure stabilizing tank, and an outlet of the pump group is provided with a safety valve.

4 . The cooling system according to claim 1 , wherein an inlet of the pump group is provided with a main flow sensor, and an outlet of the pump group is provided with a main temperature sensor; each of the inlet and the outlet of the pump group is further provided with a main pressure monitor.

5 . The cooling system according to claim 1 , wherein the first cooling circuit comprises a first fluid line, a first water supply pipe of the first fluid line is communicated with the water distributor, and a first water return pipe of the first fluid line is communicated with the water collector;
the first fluid line is provided with a plurality of first fluid branches corresponding to a plurality of the first heat sources one-to-one, an end of each of some first fluid branches converges to the first water supply pipe, the other end thereof converges to the first water return pipe; the first water supply pipe is communicated with the water distributor, and the first water return pipe is communicated with the water collector; or, the first fluid line comprises a plurality of first fluid branches corresponding to the plurality of the first heat sources one-to-one, an end of each of the first fluid branches is communicated with the water distributor, and the other end of each of the first fluid branches is communicated with the water collector.

6 . The cooling system according to claim 5 , wherein each of the first fluid branches is provided with a first branch radiator, and a first branch regulating valve, a first branch temperature sensor and a first branch flow sensor located downstream of each of the first fluid branches;
measured values of each of first branch temperature sensors and each of first branch flow sensors are monitored, and according to a target temperature value of each of the first heat sources, an opening of each of the first branch regulating valves is controlled to adjust a flow rate of each of the first fluid branches.

7 . The cooling system according to claim 5 , wherein a first pressure monitor is provided each of upstream and downstream of each of the first fluid branches.

8 . The cooling system according to claim 1 , wherein the second cooling circuit comprises a second fluid line, and the second water supply pipe of the second fluid line is communicated with the water distributor;
the third cooling circuit comprises a third fluid line, and a third water supply pipe of the third fluid line is communicated with the water distributor; the fourth cooling circuit comprises a fourth fluid line, and a fourth water supply pipe of the fourth fluid line is communicated with the water distributor; a second water return pipe of the second fluid line, a third water return pipe of the third fluid line, and a fourth water return pipe of the fourth fluid line are communicated with the water collector via the heat dissipation unit, respectively.

9 . The cooling system according to claim 8 , wherein the second section of the second water supply pipe is provided with a plurality of second fluid branches corresponding to a plurality of the second heat sources one-to-one, and each of the second fluid branches is provided with a second branch radiator, and a second branch regulating valve, a second branch temperature sensor and a second branch flow sensor are arranged downstream of each of the second fluid branches;
measured values of each of second branch temperature sensors and each of second branch flow sensors are monitored, and according to a target temperature value of each of the second heat sources, an opening of each of the second branch regulating valves is controlled to adjust a flow rate of each of the second fluid branches.

10 . The cooling system according to claim 8 , wherein a heater is provided on the first section of the second water supply pipe, and when a temperature of the cooling medium of the second cooling circuit is lower than a preset temperature and when the third heat source is not activated, the heater is activated.

11 . The cooling system according to claim 10 , wherein a second middle main temperature sensor is further provided upstream of the second section, and the heater is controlled to be open or closed and the opening of the bypass regulating valve is controlled according to a measured value of the second middle main temperature sensor.

12 . The cooling system of claim 8 , wherein a second pressure monitor is provided downstream of the first section, upstream of the second section, and at least one of upstream and downstream of each of the second fluid branches.

13 . The cooling system according to claim 8 , wherein the third fluid line is provided with a plurality of third fluid branches correspo

Assignees

• Xinjiang Goldwind Science & Tech Co Ltd

Inventors

• Wang Dinghui
• Liu Junwei
• Gao Si

Classifications

• H02K9/193

  with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium · CPC title

• H02K7/1838

  Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine · CPC title

• F05B2260/20

  Heat transfer, e.g. cooling · CPC title

• F03D80/602

  Heat transfer circuits; Refrigeration circuits · CPC title

• F05B2260/205

  Cooling fluid recirculation, i.e. after having cooled one or more components the cooling fluid is recovered and used elsewhere for other purposes · CPC title