CN110195961A - Water level linkage control system and its chain control method in a kind of air-cooled photo-thermal unit - Google Patents
Water level linkage control system and its chain control method in a kind of air-cooled photo-thermal unit Download PDFInfo
- Publication number
- CN110195961A CN110195961A CN201910570424.4A CN201910570424A CN110195961A CN 110195961 A CN110195961 A CN 110195961A CN 201910570424 A CN201910570424 A CN 201910570424A CN 110195961 A CN110195961 A CN 110195961A
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- Prior art keywords
- water
- cooling
- subsidiary engine
- water tank
- sector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 139
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 84
- 239000000498 cooling water Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims description 64
- 239000012530 fluid Substances 0.000 claims description 17
- 230000002528 anti-freeze Effects 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 12
- 238000005259 measurement Methods 0.000 description 5
- 238000010079 rubber tapping Methods 0.000 description 3
- 230000003020 moisturizing effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention discloses water level linkage control system and its chain control methods in a kind of air-cooled photo-thermal unit, belong to solar energy development and utilize field.The chain control method of water level linkage control system in the air-cooled photo-thermal unit, when the control system operates normally, branch where recirculated water in subsidiary engine equipment enters cooling sector through subsidiary engine cooling water pipe, valve through branch road enters corresponding cooling sector, cooling in cooling sector, recirculated water after cooling is re-introduced into subsidiary engine equipment through subsidiary engine return pipe；When water temperature is lower than preset temperature, the cooling water in the dry and cold tower of subsidiary engine is back to water tank by first entrance through the outlet of corresponding cooling sector；Recirculated water in subsidiary engine cooling water pipe enters water tank by second entrance.The chain control method, greatly reduce photo-thermal unit as frequent start-stop and caused by the antifreeze hidden danger of system, improve the safety of equipment operation.
Description
Technical field
The invention belongs to solar energy developments to utilize field, water level linkage control system in especially a kind of air-cooled photo-thermal unit
And its chain control method.
Background technique
Solar energy is a kind of clean renewable energy, inexhaustible, therefore has obtained flourishing hair in recent years
Exhibition.It is distributed in the northwestern in China in the direct Radiation resource of China's solar energy and usable land resource set, and the northwestward
Area's winter anomaly severe cold, therefore antifreeze situation is especially severe.And the auxiliary system of conventional thermal power unit only leans on electrically heat tracing method, deposits
In following problems, when winter severe cold operating condition starts auxiliary system, during cooling medium is filled with each cooling sector, due to water
Flow velocity degree is limited, and the heat radiator fin pipe of water flow end is just frozen, the risk of blocking pipeline.Meanwhile photo-thermal unit frequently opens
Stop bring the demand of the frequent charge and discharge water of water tank to will result in water tank overflow draining if water level control is higher than highest liquid level,
Waste water resource；Especially severe cold operating condition in winter simultaneously, the water in dry and cold each sector of tower cannot be introduced into water tank, i.e. radiator
There are the repair and maintenance period for being increased equipment by the risk of bursting by freezing and expense.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, it is chain to provide water level in a kind of air-cooled photo-thermal unit
Control system and its chain control method.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
Water level linkage control system in a kind of air-cooled photo-thermal unit, including subsidiary engine cooling water pipe, subsidiary engine return pipe, subsidiary engine are dry
Cold tower, water tank, water-delivery pump, small pump and several valves, the dry and cold tower of subsidiary engine include several cooling sectors, and cooling sector goes out
The branch road of entrance is equipped with valve；
Water tank is equipped with fluid level transmitter and circulation water inlet, the first outlet of water tank and each cooling sector entrance
It is connected, is equipped with water-delivery pump between the two；Each cooling sector outlet is connected with the first entrance of water tank；
The second outlet of water tank is connected with subsidiary engine return pipe, is equipped with small pump between the two；
Subsidiary engine cooling water pipe is connected with the entrance of cooling sector, and the outlet of cooling sector is connected with subsidiary engine return pipe；
Subsidiary engine cooling water pipe is connected with the second entrance of water tank；
Valve is equipped on above connecting pipeline；
Anti-icing fluid is added in recirculated water in control system.
Further, the demineralized water and anti-icing fluid for being 1:1 including volume ratio in recirculated water.
Further, including following operation:
When water-filling, the recirculated water in water tank is entered locating for each cooling sector entrance as first outlet through water-delivery pump
Branch enters corresponding cooling sector through valve；Recirculated water in water tank enters subsidiary engine return water through small pump by second outlet
In pipe；
When the control system operates normally, the recirculated water in subsidiary engine equipment enters cooling sector through subsidiary engine cooling water pipe
Place branch, the valve through branch road enter corresponding cooling sector, and cooling in cooling sector, recirculated water after cooling is through auxiliary
Machine return pipe is re-introduced into subsidiary engine equipment；
When water temperature is lower than preset temperature, outlet of the cooling water through corresponding cooling sector in the dry and cold tower of subsidiary engine is by first
Inlet return is to water tank；
Recirculated water in subsidiary engine cooling water pipe enters water tank by second entrance.
Further, further include following operation:
When the liquid level that fluid level transmitter is shown is higher than highest liquid level, the liquid in water tank is promoted through water-delivery pump to be discharged,
Until the liquid measure in water tank is lower than highest liquid level.
Further, further include following operation:
When the liquid level that fluid level transmitter is shown is lower than minimum liquid level, recirculated water enters in water tank through recycling water inlet,
Until the liquid measure in it is higher than minimum liquid level.
Compared with prior art, the invention has the following advantages:
Water level linkage control system in air-cooled photo-thermal unit of the invention, the interior water level that is equipped with of water tank is chain, can guarantee
Sector sluicing has been run at any time and does not run the requirement of the water-filling of sector；System integrally can be realized subsidiary engine equipment recirculated water
Cooling and subcooled water sluicing, and contain anti-icing fluid in recirculated water, two ways collective effect prevents the jelly of air-cooled photo-thermal unit
Knot.
The chain control method of water level linkage control system, passes through the company of different conditions in air-cooled photo-thermal unit of the invention
Lock control realizes the water-filling of water level linkage control system, normal operation, sluicing in air-cooled photo-thermal unit, the chain control method
Photo-thermal unit is greatly reduced as frequent start-stop and caused by the antifreeze hidden danger of system, improve the safety of equipment operation.Into
One step, which can monitor the liquid level of water tank, be allowed within the scope of normal level.
Detailed description of the invention
Fig. 1 is water level linkage control system figure in air-cooled photo-thermal unit of the invention.
Wherein: 1- subsidiary engine cooling water pipe；2- subsidiary engine return pipe；The dry and cold tower of 3- subsidiary engine；4- recycles water inlet；5- water tank；
6- fluid level transmitter；7- tapping pipe；8- water-filling pipeline；9- small pump；10- water-delivery pump；11- water pipe；12- cools down sector.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
The invention will be described in further detail with reference to the accompanying drawing:
Referring to Fig. 1, Fig. 1 is water level linkage control system figure in air-cooled photo-thermal unit of the invention；The air-cooled photo-thermal unit
Middle water level linkage control system includes subsidiary engine cooling water pipe 1, subsidiary engine return pipe 2, the dry and cold tower 3 of subsidiary engine, circulation water inlet 4, water storage
Case 5, fluid level transmitter 6, tapping pipe 7, water-filling pipeline 8, small pump 9, water-delivery pump 10, water pipe 11 and cooling sector 12, should
Cooling sector 12 in figure includes the first cooling sector, the second cooling sector, the cooling sector of third and the 4th cooling sector；
Water tank is equipped with fluid level transmitter and circulation water inlet, and the first outlet of water tank is by water-filling pipeline 8 and respectively
A cooling sector entrance is connected, and water-filling pipeline 8 is equipped with water-delivery pump；Each cooling sector outlet passes through tapping pipe 7 and water storage
The first entrance of case is connected；The second outlet of water tank is connected by water pipe 11 with subsidiary engine return pipe, water pipe
11 are equipped with small pump；Subsidiary engine cooling water pipe is connected with the entrance of cooling sector, the outlet of cooling sector and subsidiary engine return pipe
It is connected；Subsidiary engine cooling water pipe is connected with the second entrance of water tank；Valve is equipped on above connecting pipeline；Control system
Anti-icing fluid is added in recirculated water in system；
When water-filling, the recirculated water in water tank is entered locating for each cooling sector entrance as first outlet through water-delivery pump
Branch enters corresponding cooling sector through valve；Recirculated water in water tank enters subsidiary engine return water through small pump by second outlet
In pipe；
When the control system operates normally, the recirculated water in subsidiary engine equipment enters cooling sector through subsidiary engine cooling water pipe
Place branch, the valve through branch road enter corresponding cooling sector, and cooling in cooling sector, recirculated water after cooling is through auxiliary
Machine return pipe is re-introduced into subsidiary engine equipment；
When water temperature is lower than preset temperature, outlet of the cooling water through corresponding cooling sector in the dry and cold tower of subsidiary engine is by first
In inlet return to water tank；
Recirculated water in subsidiary engine cooling water pipe is entered in water tank by second entrance；
When the liquid level that fluid level transmitter is shown is higher than highest liquid level, the liquid in water tank is promoted through water-delivery pump to be discharged,
Until the liquid measure in water tank is lower than highest liquid level；
When the liquid level that fluid level transmitter is shown is lower than minimum liquid level, recirculated water enters in water tank through recycling water inlet,
Until the liquid measure in it is higher than minimum liquid level.
The present invention determines whether cooling sector is in operation work by the open state and quantity of cooling sector valve door
Condition, the operation number of cooling sector calculate minimum, the highest liquid level for determining the water tank 5 under corresponding cooling sector operating condition,
And moisturizing or the drain valve of chain unlatching water tank 5, when guaranteeing winter severe cold operating condition, auxiliary system had both been able to achieve each cooling fan
The flexible unlatching of section is also able to satisfy the demand of each emergency blowoff for running cooling sector.In severe cold operating condition, such as environment temperature
≤ -20 DEG C, when the dry and cold tower of subsidiary engine has several cooling sectors to put into operation, referring to Fig. 1, with 4 cooling sectors in the present invention
For, the minimum of water tank, highest liquid level and chain control method are as follows:
When 0 cooling sector is run, minimum liquid level Lmin0=4 corresponding liquid level+water-delivery pumps of cooling fan segment body product open pump
Minimum liquid level；When 0 cooling sector is run, highest liquid level Lmax0=water tank total measurement (volume) VAlways- 0 cooling fan segment body product corresponds to
Liquid level；
When 1 cooling sector is run, minimum liquid level Lmin1=3 corresponding liquid level+water-delivery pumps of cooling fan segment body product open pump
Minimum liquid level；When 1 cooling sector is run, highest liquid level Lmax1=water tank total measurement (volume) VAlways- 1 cooling fan segment body product corresponds to
Liquid level；
When 2 cooling sectors are run, minimum liquid level Lmin2=2 corresponding liquid level+water-delivery pumps of cooling fan segment body product open pump
Minimum liquid level；When 2 cooling sectors are run, highest liquid level Lmax2=water tank total measurement (volume) VAlways- 2 cooling fan segment body products correspond to
Liquid level；
When 3 cooling sectors are run, minimum liquid level Lmin3=1 corresponding liquid level+water-delivery pump of cooling fan segment body product opens pump
Minimum liquid level；When 3 cooling sectors are run, highest liquid level Lmax3=water tank total measurement (volume) VAlways- 3 cooling fan segment body products correspond to
Liquid level；
When 4 cooling sectors are run, minimum liquid level Lmin4=0 corresponding liquid level+water-delivery pump of cooling fan segment body product opens pump
Minimum liquid level；When 4 cooling sectors are run, highest liquid level Lmax4=water tank total measurement (volume) VAlways- 4 cooling fan segment body products correspond to
Liquid level
When unit operates normally, if 5 liquid level of water tank is lower than the minimum liquid level of corresponding cooling sector, low-water alarm
And the valve of the supplement water of recirculated water is automatically opened, from 5 moisturizing of trend water tank；When 5 liquid level of water tank is higher than accordingly opened cold
But when the highest liquid level of sector, then high water-level alarm and the water compensating valve of water tank is closed, and liquid extra in water tank 5 is led to
The extraction of water-delivery pump 10 is crossed, to guarantee 5 liquid level of water tank between the corresponding highest liquid level and minimum liquid level for opening cooling sector.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (5)
1. water level linkage control system in a kind of air-cooled photo-thermal unit, which is characterized in that including subsidiary engine cooling water pipe (1), subsidiary engine
Return pipe (2), the dry and cold tower of subsidiary engine (3), water tank (5), water-delivery pump (10), small pump (9) and several valves, the dry and cold tower of subsidiary engine
It (3) include several cooling sectors, the branch road of the entrance of cooling sector is equipped with valve；
Water tank (5) is equipped with fluid level transmitter (6) and circulation water inlet (4), the first outlet and each cooling of water tank (5)
Sector entrance is connected, and is equipped with water-delivery pump (10) between the two；The first entrance phase of each cooling sector outlet and water tank (5)
Connection；
The second outlet of water tank (5) is connected with subsidiary engine return pipe (2), is equipped with small pump (9) between the two；
Subsidiary engine cooling water pipe (1) is connected with the entrance of cooling sector, and the outlet of cooling sector is connected with subsidiary engine return pipe (2)
It is logical；
Subsidiary engine cooling water pipe (1) is connected with the second entrance of water tank (5)；
Valve is equipped on above connecting pipeline；
Anti-icing fluid is added in recirculated water in control system.
2. water level linkage control system in air-cooled photo-thermal unit according to claim 1, which is characterized in that packet in recirculated water
Include the demineralized water and anti-icing fluid that volume ratio is 1:1.
3. the chain control method of water level linkage control system in air-cooled photo-thermal unit according to claim 1 or 2, special
Sign is, including following operation:
When water-filling, the recirculated water in water tank (5) enters each cooling sector entrance institute through water-delivery pump (10) by first outlet
The branch at place enters corresponding cooling sector (12) through valve；Recirculated water in water tank (5) is by second outlet through small pump
(9) enter in subsidiary engine return pipe (2)；
When the control system operates normally, the recirculated water in subsidiary engine equipment enters cooling sector through subsidiary engine cooling water pipe (1)
(12) branch where, the valve through branch road enters corresponding cooling sector (12), cooling in cooling sector (12), after cooling
Recirculated water be re-introduced into subsidiary engine equipment through subsidiary engine return pipe (2)；
When water temperature is lower than preset temperature, outlet of the cooling water through corresponding cooling sector (12) in the dry and cold tower of subsidiary engine (3) by
First entrance is back to water tank (5)；
Recirculated water in subsidiary engine cooling water pipe (1) enters water tank (5) by second entrance.
4. the chain control method of water level linkage control system, feature in air-cooled photo-thermal unit according to claim 3
It is, further includes following operation:
When the liquid level of fluid level transmitter (6) display is higher than highest liquid level, the liquid in water tank (5) is promoted through water-delivery pump (10)
Discharge, until the liquid measure in water tank (5) is lower than highest liquid level.
5. the chain control method of water level linkage control system, feature in air-cooled photo-thermal unit according to claim 3
It is, further includes following operation:
When the liquid level of fluid level transmitter (6) display is lower than minimum liquid level, recirculated water enters water tank through circulation water inlet (4)
(5) in, until the liquid measure in it is higher than minimum liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910570424.4A CN110195961B (en) | 2019-06-27 | 2019-06-27 | Water level linkage control system in air cooling photo-thermal unit and linkage control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910570424.4A CN110195961B (en) | 2019-06-27 | 2019-06-27 | Water level linkage control system in air cooling photo-thermal unit and linkage control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110195961A true CN110195961A (en) | 2019-09-03 |
| CN110195961B CN110195961B (en) | 2024-02-06 |
Family
ID=67755335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910570424.4A Active CN110195961B (en) | 2019-06-27 | 2019-06-27 | Water level linkage control system in air cooling photo-thermal unit and linkage control method thereof |
Country Status (1)
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| CN (1) | CN110195961B (en) |
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|---|---|---|---|---|
| JPH06180176A (en) * | 1992-10-23 | 1994-06-28 | Hitachi Ltd | Cold water circulating device |
| US20040011046A1 (en) * | 1999-08-06 | 2004-01-22 | Pierson Tom L. | System for staged chilling of inlet air for gas turbines |
| CN101025343A (en) * | 2006-02-21 | 2007-08-29 | 许建壮 | Generating plant circulation-water electrothermal combined production and air-cooling spraying combined cooling system |
| CN205262031U (en) * | 2015-12-05 | 2016-05-25 | 内蒙古电力勘测设计院有限责任公司 | high back pressure heat supply unit auxiliary engine recirculating cooling water system |
| JP2017053597A (en) * | 2015-09-11 | 2017-03-16 | 三菱重工業株式会社 | Cooling tower control device, cooling tower control method and heat source system |
| CN207262801U (en) * | 2017-09-28 | 2018-04-20 | 公安部天津消防研究所 | A kind of compound cooling water system |
| CN208186957U (en) * | 2018-02-26 | 2018-12-04 | 李涛 | A kind of hydraulic dynamometer water tank automatic cycle control reverse flow cooling system |
| CN210107861U (en) * | 2019-06-27 | 2020-02-21 | 中国电力工程顾问集团西北电力设计院有限公司 | Water level interlocking control system in air cooling light and heat unit |
-
2019
- 2019-06-27 CN CN201910570424.4A patent/CN110195961B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06180176A (en) * | 1992-10-23 | 1994-06-28 | Hitachi Ltd | Cold water circulating device |
| US20040011046A1 (en) * | 1999-08-06 | 2004-01-22 | Pierson Tom L. | System for staged chilling of inlet air for gas turbines |
| CN101025343A (en) * | 2006-02-21 | 2007-08-29 | 许建壮 | Generating plant circulation-water electrothermal combined production and air-cooling spraying combined cooling system |
| JP2017053597A (en) * | 2015-09-11 | 2017-03-16 | 三菱重工業株式会社 | Cooling tower control device, cooling tower control method and heat source system |
| CN205262031U (en) * | 2015-12-05 | 2016-05-25 | 内蒙古电力勘测设计院有限责任公司 | high back pressure heat supply unit auxiliary engine recirculating cooling water system |
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| CN208186957U (en) * | 2018-02-26 | 2018-12-04 | 李涛 | A kind of hydraulic dynamometer water tank automatic cycle control reverse flow cooling system |
| CN210107861U (en) * | 2019-06-27 | 2020-02-21 | 中国电力工程顾问集团西北电力设计院有限公司 | Water level interlocking control system in air cooling light and heat unit |
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| CN110195961B (en) | 2024-02-06 |
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