CN210900080U - Converter valve cooling system - Google Patents
Converter valve cooling system Download PDFInfo
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- CN210900080U CN210900080U CN201920429441.1U CN201920429441U CN210900080U CN 210900080 U CN210900080 U CN 210900080U CN 201920429441 U CN201920429441 U CN 201920429441U CN 210900080 U CN210900080 U CN 210900080U
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Abstract
A converter valve cooling system comprising: a seawater direct cooling system, a fresh water circulating cooling system and a deionized water circulating cooling system; the deionized water circulating cooling system is connected with the cooled part (13) and is used for carrying out primary heat exchange with the cooled part (13); the fresh water circulating cooling system is connected with the deionized water circulating cooling system to carry out secondary heat exchange; the seawater direct cooling system is connected with the fresh water circulating cooling system and is used for third heat exchange; the whole system does not need to build an air cooler or a cooling tower, so that the field is saved, and the three-circulation system is adopted to prevent the direct mutual contact of seawater and deionized water from causing the pollution and corrosion of the cooling medium of the deionization system.
Description
Technical Field
The utility model relates to a power electronics field, concretely relates to converter valve cooling system.
Background
At present, the offshore power transmission generally adopts a high-voltage direct-current power transmission technology controlled by a voltage source, namely a flexible direct-current power transmission technology. Offshore marine converter stations are an important part of flexible direct current transmission, but are built on offshore platforms where the offshore platforms are not only chemically attacked by seawater but also by marine life. Converter valves are key equipment of offshore converter stations, and the large amount of waste heat generated by them requires cooling.
There are some offshore platforms, which use a seawater direct cooling method, i.e. the waste heat of the converter valve is discharged to the seawater around the offshore platform through a converter valve cooling system. The scheme includes that on one hand, a liquid-tight closed converter valve cooling system and a seawater circulating system are cooled by glycol pure water, and on the other hand, the corrosion problem of equipment is serious.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides a converter valve cooling system.
The utility model provides a technical scheme is:
a converter valve cooling system at a converter valve station comprising: a seawater direct cooling system, a fresh water circulating cooling system and a deionized water circulating cooling system;
the deionized water circulating cooling system is connected with the cooled converter valve (13) and is used for carrying out primary heat exchange with the cooled converter valve (13);
the fresh water circulating cooling system is connected with the deionized water circulating cooling system to carry out secondary heat exchange;
the seawater direct cooling system is connected with the fresh water circulating cooling system and is used for third heat exchange;
and the liquid temperature of the deionized water circulating cooling system is higher than that of the fresh water circulating cooling system and is higher than that of the seawater direct cooling system.
Preferably, the method further comprises the following steps: a seawater heat exchanger (3);
the seawater direct cooling system is connected with the fresh water circulating cooling system through a seawater heat exchanger (3), and heat exchange is carried out for the third time based on the seawater heat exchanger (3).
Preferably, the seawater direct cooling system comprises: a seawater pump (1) and a seawater pretreatment device (2);
the input end of the seawater pump (1) is arranged in seawater, and the output end of the seawater pump is connected with the input end of the cold side of the seawater heat exchanger (3) through a seawater pretreatment device (2);
the output end of the cold side of the seawater heat exchanger (3) is connected into seawater.
Preferably, the fresh water circulating cooling system includes: a plate heat exchanger (6);
the cold side input end of the plate type heat exchanger (6) is connected with the hot side output end of the seawater heat exchanger (3) to carry out secondary heat exchange;
the cold side output end of the plate type heat exchanger (6) is connected with the hot side input end of the seawater heat exchanger (3);
and the hot side of the plate heat exchanger (6) is connected with the cooled converter valve (13) to perform primary heat exchange.
Preferably, the deionized water circulation cooling system comprises: a main circulation pump (7) and a degassing tank (8);
the hot side of the plate heat exchanger (6) is connected with the cooled converter valve (13) through a main circulating pump (7) and a degassing tank (8).
Preferably, the deionized water circulation cooling system further includes: an ion exchanger (9), an expansion tank (10), a water replenishing pump (11) and a nitrogen tank (12);
the ion exchanger (9) and the expansion tank (10) are arranged between the plate heat exchanger (6) and the degassing tank (8) to form a deionized water replenishing system;
the water replenishing pump (11) is connected with the ion exchanger (9);
the nitrogen tank (12) is connected with the expansion tank (10).
Preferably, the method further comprises the following steps: a water storage tank (4) and a valve (15);
the output end of the water storage tank (4) is connected with the hot side of the seawater heat exchanger (3) through a valve (15), and the valve (15) is opened to provide a water source for the converter valve cooling system when the seawater heat exchanger (3) breaks down.
Preferably, the method further comprises the following steps: a central air conditioning system (5);
the central air-conditioning system (5) is installed in the cooled converter valve (13) or in an office, the output end of the central air-conditioning system (5) is connected with the input end of the water storage tank (4) and the hot side input end of the seawater heat exchanger (3) respectively, and the input end of the central air-conditioning system (5) is connected with the cold side output end of the seawater heat exchanger (3) and used for carrying out heat exchange on the central air-conditioning system (5).
Preferably, the method further comprises the following steps: a first valve (14) and a third valve (16);
the first valve (14) is arranged between the cold side output end of the plate heat exchanger (6) and the hot side input end of the seawater heat exchanger (3) and is used for controlling the flow direction of high-temperature fresh water of the plate heat exchanger (6);
the third valve (16) is arranged between the output end of the central air-conditioning system (5) and the hot side input end of the seawater heat exchanger (3) and used for controlling the flow direction of high-temperature fresh water of the central air-conditioning system (5).
Preferably, the connection modes are all pipeline connection.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model provides a technical scheme, include: a seawater direct cooling system, a fresh water circulating cooling system and a deionized water circulating cooling system; the deionized water circulating cooling system is connected with the cooled part (13) and is used for carrying out primary heat exchange with the cooled part (13); the fresh water circulating cooling system is connected with the deionized water circulating cooling system to carry out secondary heat exchange; the seawater direct cooling system is connected with the fresh water circulating cooling system and is used for third heat exchange; the whole system does not need to build an air cooler or a cooling tower, so that the field is saved, and the three-circulation system is adopted to prevent the direct mutual contact of seawater and deionized water from causing the pollution and corrosion of the cooling medium of the deionization system.
2. The utility model provides a technical scheme passes through fresh water cooling cycle joint design with the warm logical air conditioner in converter valve cooling system and converter valve room, has improved the utilization ratio of low temperature fresh water, this natural cold source of make full use of marine environment replaces closed cooling tower or the air cooler that traditional land converter station used, has practiced thrift offshore platform's building area, makes integrating more of entire system.
Drawings
FIG. 1 is a schematic structural view of a converter valve cooling system according to the present invention;
1-a sea water pump; 2-seawater pretreatment device; 3-a seawater heat exchanger; 4-a water storage tank; 5-central air-conditioning cooling system and other fresh water cooling system; 6-plate heat exchanger; 7-main circulation pump; 8-degassing tank; 9-an ion exchanger; 10-an expansion tank; 11-a water replenishing pump; a 12-nitrogen gas cylinder; 13-a cooled component; 14-a first valve; 15-a second valve; 16-third valve.
Detailed Description
For a better understanding of the present invention, reference is made to the accompanying drawings and examples, which are set forth in the following description and are incorporated in the following description.
Example 1:
a converter valve cooling system at a converter valve station comprising: a seawater direct cooling system, a fresh water circulating cooling system and a deionized water circulating cooling system;
the deionized water circulating cooling system is connected with the cooled converter valve 13 and is used for carrying out primary heat exchange with the cooled converter valve 13;
the fresh water circulating cooling system is connected with the deionized water circulating cooling system to carry out secondary heat exchange;
the seawater direct cooling system is connected with the fresh water circulating cooling system and is used for third heat exchange;
and the liquid temperature of the deionized water circulating cooling system is higher than that of the fresh water circulating cooling system and is higher than that of the seawater direct cooling system.
Further comprising: a seawater heat exchanger 3;
the seawater direct cooling system is connected with the fresh water circulating cooling system through a seawater heat exchanger 3, and heat exchange is carried out for the third time based on the seawater heat exchanger 3.
The seawater direct cooling system comprises: a seawater pump 1 and a seawater pretreatment device 2;
the input end of the seawater pump 1 is arranged in seawater, and the output end of the seawater pump is connected with the input end of the cold side of the seawater heat exchanger 3 through a seawater pretreatment device 2;
the output end of the cold side of the seawater heat exchanger 3 is connected into seawater.
The fresh water circulating cooling system comprises: a plate heat exchanger 6;
the cold side input end of the plate heat exchanger 6 is connected with the hot side output end of the seawater heat exchanger 3 to perform secondary heat exchange;
the cold side output end of the plate heat exchanger 6 is connected with the hot side input end of the seawater heat exchanger 3;
and the hot side of the plate heat exchanger 6 is connected with the cooled converter valve 13 to perform primary heat exchange.
The deionized water circulating cooling system comprises: a main circulation pump 7 and a degassing tank 8;
the hot side of the plate heat exchanger 6 is connected to the cooled converter valve 13 via a main circulation pump 7 and a degassing tank 8.
The deionized water circulating cooling system further comprises: an ion exchanger 9, an expansion tank 10, a water replenishing pump 11 and a nitrogen tank 12;
the ion exchanger 9 and the expansion tank 10 are arranged between the plate heat exchanger 6 and the degassing tank 8 to form a deionized water replenishing system;
the water replenishing pump 11 is connected with the ion exchanger 9;
the nitrogen tank 12 is connected to the expansion tank 10.
Further comprising: a water storage tank 4 and a valve 15;
the output end of the water storage tank 4 is connected with the hot side of the seawater heat exchanger 3 through a valve 15, and when the seawater heat exchanger 3 breaks down, the valve 15 is opened to provide a water source for the converter valve cooling system.
Further comprising: a central air conditioning system 5;
the central air-conditioning system 5 is installed in the cooled converter valve 13 or in an office, the output end of the central air-conditioning system 5 is respectively connected with the input end of the water storage tank 4 and the hot side input end of the seawater heat exchanger 3, and the input end of the central air-conditioning system 5 is connected with the cold side output end of the seawater heat exchanger 3 and used for carrying out heat exchange on the central air-conditioning system 5.
Further comprising: a first valve 14 and a third valve 16;
the first valve 14 is arranged between the output end of the cold side of the plate heat exchanger 6 and the input end of the hot side of the seawater heat exchanger 3, and is used for controlling the flow direction of high-temperature fresh water of the plate heat exchanger 6;
the third valve 16 is arranged between the output end of the central air-conditioning system 5 and the input end of the hot side of the seawater heat exchanger 3, and is used for controlling the flow direction of the high-temperature fresh water of the central air-conditioning system 5.
The connection modes are all pipeline connections.
The system consists of a seawater direct cooling system, a fresh water circulating cooling system and a deionized water circulating cooling system, wherein the seawater direct cooling system exchanges heat with the fresh water circulating cooling system through a seawater heat exchanger; the fresh water circulating cooling system exchanges heat with the deionized water circulating cooling system through the plate heat exchanger, and heat transfer is carried out through water-water heat exchange. The utility model discloses this natural cold source of make full use of sea water has replaced traditional converter valve cooling system's air cooler and closed cooling tower, adds fresh water circulative cooling system and carries out the heat transfer in order to prevent that sea water and deionized water direct mutual contact from causing the pollution of system's coolant, can be used for some low temperature fresh water to central air conditioning's cooling water simultaneously, has improved the utilization ratio of fresh water.
Example 2:
as shown in fig. 1, a converter valve cooling system of a three-circulation loop for an offshore platform comprises a seawater pump 1, a seawater pretreatment device 2, a seawater heat exchanger 3, a water storage tank 4, a central air-conditioning cooling system and other water cooling systems 5, a plate heat exchanger 6, a main circulation pump 7, a degassing tank 8, an ion exchanger 9, an expansion tank 10, a water replenishing pump 11, a nitrogen cylinder 12 and a cooled part 13;
and the plate heat exchanger 6 is composed of a deionized water circulating cooling system by a cooling part 13, a water replenishing pump 11, a nitrogen gas bottle 12, an ion exchanger 9, an expansion tank 10, a main circulating pump 7 and a degassing tank 8. Wherein the hot side of the plate heat exchanger 6, the cooled part 13, the main circulating pump 7 and the degassing tank 8 are sequentially connected through pipelines to form a main circulating loop; the water replenishing pump 11, the nitrogen gas cylinder 12, the ion exchanger 9 and the expansion tank 10 are connected through pipelines to form a deionization water replenishing system and are connected with the main circulation loop.
The cold side of the plate heat exchanger 5, the water storage tank 4, the central air-conditioning cooling system 5 and the hot side of the seawater heat exchanger 3 are connected through a pipeline to form a fresh water circulating cooling system; wherein, one part of the low-temperature fresh water obtained after heat exchange by the seawater heat exchanger 3 is used for cooling the central air-conditioning system, and the other part of the low-temperature fresh water flows through the plate heat exchanger 6 to exchange heat with hot water in the deionization circulating system. The two parts of the fresh water after being heated flow back to the water storage tank 4, and then the fresh water exchanges heat with the seawater heat exchanger to obtain low-temperature fresh water.
The cold side of the seawater heat exchanger 3, the seawater pump 1 and the seawater pretreatment device 2 are connected through a pipeline to form a seawater direct cooling system; the low-temperature seawater is pumped into a seawater pretreatment device 2 through a seawater pump 1 for pretreatment, and then flows through a seawater heat exchanger 3 to exchange heat with hot water in a fresh water circulating system and then is directly discharged into the sea.
Example (b): 3:
utilize the utility model provides a converter valve cooling system can cool off the converter valve of converter valve station, and concrete method includes:
the deionized water circulating cooling system and the cooled part carry out first heat exchange to form high-temperature ionized water;
the high-temperature ion water and the low-temperature fresh water of the fresh water circulating cooling system perform secondary heat exchange to form high-temperature fresh water;
and carrying out third heat exchange between the high-temperature fresh water and the low-temperature seawater of the seawater direct cooling system to form high-temperature seawater, and discharging the high-temperature seawater to the seawater.
The low-temperature seawater of the seawater direct cooling system exchanges heat with the high-temperature water of the central air-conditioning system to form high-temperature seawater;
the high-temperature seawater is discharged into seawater through a seawater heat exchanger.
The high temperature fresh water and the low temperature sea water of the sea water direct cooling system carry out the third heat exchange to form high temperature sea water, and discharge the high temperature sea water to the sea water, and the method also comprises the following steps:
when the seawater heat exchanger fails:
opening the second valve, closing the first valve and the third valve, and performing third heat exchange between the high-temperature fresh water and the low-temperature water in the water storage tank;
when the seawater heat exchanger is normal:
and closing the second valve, opening the first valve and the third valve, carrying out third heat exchange on the high-temperature fresh water and the low-temperature seawater of the seawater heat exchanger to form high-temperature seawater, and discharging the high-temperature seawater into the seawater.
The above description is only exemplary of the invention and is not intended to limit the invention, and any modifications, equivalent alterations, improvements and the like which are made within the spirit and principle of the invention are all included in the scope of the claims which are appended hereto.
Claims (10)
1. A converter valve cooling system, characterized in that said system at a converter valve station comprises: a seawater direct cooling system, a fresh water circulating cooling system and a deionized water circulating cooling system;
the deionized water circulating cooling system is connected with the cooled converter valve (13) and is used for carrying out primary heat exchange with the cooled converter valve (13);
the fresh water circulating cooling system is connected with the deionized water circulating cooling system to carry out secondary heat exchange;
the seawater direct cooling system is connected with the fresh water circulating cooling system and is used for third heat exchange;
and the liquid temperature of the deionized water circulating cooling system is higher than that of the fresh water circulating cooling system and is higher than that of the seawater direct cooling system.
2. The converter valve cooling system of claim 1, further comprising: a seawater heat exchanger (3);
the seawater direct cooling system is connected with the fresh water circulating cooling system through a seawater heat exchanger (3), and heat exchange is carried out for the third time based on the seawater heat exchanger (3).
3. The converter valve cooling system of claim 2, wherein the seawater direct cooling system comprises: a seawater pump (1) and a seawater pretreatment device (2);
the input end of the seawater pump (1) is arranged in seawater, and the output end of the seawater pump is connected with the input end of the cold side of the seawater heat exchanger (3) through a seawater pretreatment device (2);
the output end of the cold side of the seawater heat exchanger (3) is connected into seawater.
4. The converter valve cooling system of claim 2, wherein the fresh water cycle cooling system comprises: a plate heat exchanger (6);
the cold side input end of the plate type heat exchanger (6) is connected with the hot side output end of the seawater heat exchanger (3) to carry out secondary heat exchange;
the cold side output end of the plate type heat exchanger (6) is connected with the hot side input end of the seawater heat exchanger (3);
and the hot side of the plate heat exchanger (6) is connected with the cooled converter valve (13) to perform primary heat exchange.
5. The converter valve cooling system of claim 4, wherein the deionized water circulating cooling system comprises: a main circulation pump (7) and a degassing tank (8);
the hot side of the plate heat exchanger (6) is connected with the cooled converter valve (13) through a main circulating pump (7) and a degassing tank (8).
6. The converter valve cooling system of claim 5, wherein the deionized water recirculation cooling system further comprises: an ion exchanger (9), an expansion tank (10), a water replenishing pump (11) and a nitrogen tank (12);
the ion exchanger (9) and the expansion tank (10) are arranged between the plate heat exchanger (6) and the degassing tank (8) to form a deionized water replenishing system;
the water replenishing pump (11) is connected with the ion exchanger (9);
the nitrogen tank (12) is connected with the expansion tank (10).
7. The converter valve cooling system of claim 4, wherein the fresh water cycle cooling system further comprises: a water storage tank (4) and a valve (15);
the output end of the water storage tank (4) is connected with the hot side of the seawater heat exchanger (3) through a valve (15), and the valve (15) is opened to provide a water source for the converter valve cooling system when the seawater heat exchanger (3) breaks down.
8. The converter valve cooling system of claim 7, wherein said converter valve station further comprises: a central air conditioning system (5);
the central air-conditioning system (5) is installed in the cooled converter valve (13) or in an office, the output end of the central air-conditioning system (5) is connected with the input end of the water storage tank (4) and the hot side input end of the seawater heat exchanger (3) respectively, and the input end of the central air-conditioning system (5) is connected with the cold side output end of the seawater heat exchanger (3) and used for carrying out heat exchange on the central air-conditioning system (5).
9. The converter valve cooling system of claim 8, further comprising: a first valve (14) and a third valve (16);
the first valve (14) is arranged between the cold side output end of the plate heat exchanger (6) and the hot side input end of the seawater heat exchanger (3) and is used for controlling the flow direction of high-temperature fresh water of the plate heat exchanger (6);
the third valve (16) is arranged between the output end of the central air-conditioning system (5) and the hot side input end of the seawater heat exchanger (3) and used for controlling the flow direction of high-temperature fresh water of the central air-conditioning system (5).
10. The converter valve cooling system of any one of claims 3-9, wherein the connections are all pipe connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920429441.1U CN210900080U (en) | 2019-04-01 | 2019-04-01 | Converter valve cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920429441.1U CN210900080U (en) | 2019-04-01 | 2019-04-01 | Converter valve cooling system |
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| CN210900080U true CN210900080U (en) | 2020-06-30 |
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| CN201920429441.1U Active CN210900080U (en) | 2019-04-01 | 2019-04-01 | Converter valve cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057223A (en) * | 2019-04-01 | 2019-07-26 | 全球能源互联网研究院有限公司 | A kind of liquid-cooled heat-producing device Complex-cooling system and method |
| CN110087437A (en) * | 2019-04-01 | 2019-08-02 | 全球能源互联网研究院有限公司 | A kind of converter valve cooling system and its method |
-
2019
- 2019-04-01 CN CN201920429441.1U patent/CN210900080U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057223A (en) * | 2019-04-01 | 2019-07-26 | 全球能源互联网研究院有限公司 | A kind of liquid-cooled heat-producing device Complex-cooling system and method |
| CN110087437A (en) * | 2019-04-01 | 2019-08-02 | 全球能源互联网研究院有限公司 | A kind of converter valve cooling system and its method |
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