CN206619467U - Transformer cooling system and the wind power generating set including the cooling system - Google Patents

Transformer cooling system and the wind power generating set including the cooling system Download PDF

Info

Publication number
CN206619467U
CN206619467U CN201720389991.6U CN201720389991U CN206619467U CN 206619467 U CN206619467 U CN 206619467U CN 201720389991 U CN201720389991 U CN 201720389991U CN 206619467 U CN206619467 U CN 206619467U
Authority
CN
China
Prior art keywords
cooling system
transformer
heat exchanger
mainframe
pump station
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.)
Active
Application number
CN201720389991.6U
Other languages
Chinese (zh)
Inventor
郭海荣
王世欢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Original Assignee
Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Goldwind Science and Creation Windpower Equipment Co Ltd filed Critical Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority to CN201720389991.6U priority Critical patent/CN206619467U/en
Application granted granted Critical
Publication of CN206619467U publication Critical patent/CN206619467U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Landscapes

  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The utility model provides a kind of transformer cooling system and the wind power generating set including the cooling system.The transformer cooling system is used for the step-up transformer being located inside tower for cooling down wind power generating set, and the transformer cooling system includes being arranged on the mainframe inside the tower, the external heat exchanger being arranged on outside the tower and the transformer heat exchanger supporting with the step-up transformer.The outlet of the transformer heat exchanger is connected to the entrance of the circulating pump of the pump station part in the mainframe by first circulation pipeline, the outlet of the circulating pump is connected to the entrance of the external heat exchanger by second circulation pipeline, and the outlet of the external heat exchanger is connected to the entrance of the transformer heat exchanger positioned at the outside of the mainframe by the 3rd circulation line.According to the transformer cooling system of embodiment of the present utility model, connecting line is simplified, realizes highly integrated and can improve cooling effectiveness.

Description

Transformer cooling system and the wind power generating set including the cooling system
Technical field
The utility model is related to wind power generation field, more particularly to a kind of transformer cooling system and including the cooling system Wind power generating set.
Background technology
Wind energy is rapidly developed in recent years as green clean energy resource.It is excellent as the exploitation of land wind-resources hastens towards saturation day The offshore wind energy resource of matter is increasingly becoming the emphasis of various countries' exploitation, and wind power generating set is increasingly to large-scale development.Although extra large Upper wind-powered electricity generation have wind-resources high-quality, do not take up an area, the advantage such as grid-connected conditions are good, while being also faced with cost height, Maintenance Difficulty, environmental condition It is severe to wait challenge.
With the development of offshore wind farm, wind power generating set water front off sea is more and more remote, along with maritime environment is especially disliked Bad, its maintenance difficulties is increasing, maintenance cost more and more higher, therefore it is required that equipment has higher reliability, maintainability.
With the growth of the power of the assembling unit, corresponding part caloric value also increases.Step-up transformer is that unit access power network must Indispensable part, is also one of main heat generating components of unit, and it is one of key point of wind power generating set to solve its radiating.
Step-up transformer is put to reduce offshore wind farm set tower outer platform construction cost in many wind-driven generator producers Put inside tower, and Seal Design is carried out to tower, this is accomplished by outside the heat derives of step-up transformer to tower.Face Such case, the pump station part of cooling system and control section are arranged in tower by many producers at present, and are connected by pipeline The heat-exchanger rig of outside is connected to, so that by outside the heat derives of step-up transformer to tower.Wherein, pump station part and control section It is separately positioned in different cabinets, so as to cause connecting pipeline therebetween to arrange complicated, increase field installation time, easily In damage and occupancy larger space.Further, since pump station part and the cabinet degree of protection that control section is used are relatively low, in salt The heavier place of mist can make cabinet in itself and electric component therein produces serious corrosion, causes cooling system normal Work, and then cause whole compressor emergency shutdown.
In addition, existing cooling system passes in and out pump to measure the temperature of the cooling medium of heat exchanger entrance and outlet Stand part cabinet pipeline be 4, cause pipeline more complicated, increase cooling system cost and pipeline in-site installation when Between.
Furthermore, wind power generating set is under small wind state and holding state, and the caloric value of step-up transformer is smaller, therefore cold But the cooling medium in system can be in relatively low temperature, if long-term run under low-temperature condition, can cause in cooling system The encapsulant of pump housing axle envelope accelerates deterioration failure, and then causes cooling system leak, thus cisco unity malfunction.
Utility model content
The purpose of this utility model be to provide a kind of connecting line simplify, it is highly integrated and cooling effectiveness can be improved Transformer cooling system and the wind power generating set including the transformer cooling system.
According to one side of the present utility model there is provided a kind of transformer cooling system, the transformer cooling system is used for The step-up transformer being located inside tower of wind power generating set is cooled down, wherein, the transformer cooling system includes being arranged on Mainframe inside the tower, the external heat exchanger being arranged on outside the tower and supporting with the step-up transformer Transformer heat exchanger, wherein, the outlet of the transformer heat exchanger is connected to the pump in the mainframe by first circulation pipeline Stand part circulating pump entrance, the outlet of the circulating pump is connected to entering for the external heat exchanger by second circulation pipeline Mouthful, the outlet of the external heat exchanger is connected to the transformer positioned at the outside of the mainframe and changed by the 3rd circulation line The entrance of hot device.
Alternatively, the pump station part also includes primary heater, and the primary heater is arranged on second circulation pipeline On.
Alternatively, the pump station part and control section, and the dividing plate for passing through metal material are integrated with the mainframe The pump station part and the control section are separated.
Alternatively, the inner space in the mainframe is divided into superposed first compartment and is located at by the dividing plate The second compartment of bottom, the control section is arranged in first compartment, and the pump station part is arranged in the second compartment.
Alternatively, the connection cable between the control section and the pump station part is locked by PG joints, the PG Joint is arranged on the dividing plate.
Alternatively, radiator fan and secondary heater are additionally provided with the first compartment.
Alternatively, the first circulation line branching goes out branch line, and the expansion drum of pump station part is arranged on the branch On pipeline.
Alternatively, the pump station part also includes inlet pressure transmitter, outlet pressure transmitter and outlet temperature pick-up It is provided with device, the first circulation pipeline on the inlet pressure transmitter, second circulation pipeline and is provided with the outlet pressure Power transmitter and the outlet temperature transmitter.
Alternatively, the pump station part also includes safety valve and air bleeding valve, is provided with the second circulation pipeline described Safety valve and the air bleeding valve.
According to another aspect of the present utility model there is provided a kind of wind power generating set, the wind power generating set includes position Step-up transformer and transformer cooling system as described above inside tower.
According to embodiment of the present utility model, the radiating requirements with step-up transformer, global optimization collection are laid out according to tower Into cooling system, make that pipe-line layout is more rationally simple, reduce cost, improve assembled in situ efficiency.By in a cooling system Firing equipment is set, condition of work of the step-up transformer in low temperature is not only met, and can prevent cooling system middle pump body machine from sealing Damaged under prolonged cold working condition, improve cooling effectiveness.
Moreover, by making the mainframe of cooling system while accommodating pumping station system and control system and being incited somebody to action by metal partion (metp) It is separated into above and below two spaces, realizing compact cooling system, it is cost-effective while enhance anti-electromagnetic interference effect.
Brief description of the drawings
Fig. 1 is the composition schematic diagram of the transformer cooling system according to embodiment of the present utility model;
Fig. 2 is the front elevation (omission cabinet door) of the mainframe according to embodiment of the present utility model;
Fig. 3 is the stereogram (omission cabinet door) of the mainframe according to embodiment of the present utility model.
Embodiment
Embodiment of the present utility model is specifically described below in conjunction with accompanying drawing.
The step-up transformer 100 and mainframe 200 (see Fig. 2 and Fig. 3) of wind power generating set are arranged at tower and (not shown Go out) in same layer on, it is outer and be connected respectively to step-up transformer 100 and mainframe that external heat exchanger 300 is arranged on tower 200, heat exchange is carried out with the cooling medium in the circulation line with flowing through step-up transformer 100 and mainframe 200, so as to will rise The heat produced that pressure transformer 100 is produced is to outside.
Fig. 1 is the circulation line schematic diagram according to the transformer cooling system of embodiment of the present utility model, below will ginseng The circulation line of the cooling medium in transformer cooling system is introduced according to Fig. 1.Wherein, the part in dotted line frame is to be integrated in main frame Pump station part 210 inside cabinet 200.
As shown in figure 1, transformer cooling system is including being arranged on the mainframe 200 inside the tower (see Fig. 2 and figure 3) external heat exchanger 300 and the transformer heat exchanger supporting with step-up transformer 100, being arranged on outside tower (do not show Go out).The outlet of transformer heat exchanger is connected to the circulating pump of the pump station part 210 in mainframe 200 by first circulation pipeline L1 211 entrance, second circulation pipeline L2 is by the entrance of the externally connected heat exchanger 300 in outlet of circulating pump 211, and the 3rd circulates The outlet of external heat exchanger 300 is connected to the entrance of transformer heat exchanger positioned at the outside of the mainframe 200 by pipeline L3. That is, the cooling medium in the 3rd circulation line L3 is not passed through mainframe 200.
Circulating pump 211 can be used for making cooling medium circulate in circulation line.Cooling medium can be by pump station part 210 The floss hole 210a that fills be injected into circulation line or give off circulation line, and can be in first circulation pipeline L1, second Circulated in circulation line L2, the 3rd circulation line L3.
Preferably, first circulation pipeline L1 branches out branch line L4, and the expansion drum 213 of pump station part 210 may be provided at It can be connected on the branch line L4 and by flexible pipe branch line L4, therefore expansion drum 213 can be located at entering for circulating pump 211 Mouth side, the position is the pressure minimum point of system, and expansion drum 213 plays a part of balance system pressure herein.Expansion drum 213 exists Equivalent to one cistern of system, absorbs volume increase and decrease of the release system cooling medium caused by temperature change.In addition, expansion Air bleeding valve and pressure gauge also can be set on tank 213, air bleeding valve is used to discharge gas therein, and pressure gauge is used to show expansion drum 213 pressure.Preferably, pump station part 210 may also include primary heater 212, and primary heater 212 may be provided at second and follow On the L2 of endless tube road, to be heated when coolant temperature is too low to the cooling medium in circulation line.Coolant temperature When too low, the encapsulant that pump housing machine can be caused to seal is not only hard but also crisp, it is easy to damage, therefore will by using primary heater 212 Cooling medium is heated to the temperature needed for pump housing machine envelope, improves the performance of pump housing machine envelope and extends its service life.
In addition, inlet pressure transmitter 219 can be set in the entrance side in circulating pump 211, can in the outlet side of circulating pump 211 Outlet pressure transmitter 217 and outlet temperature transmitter 218 are set, to detect the pressure of the cooling medium in cooling system in real time Control cooling system with temperature and accordingly.Preferably, outlet pressure transmitter 217 and outlet temperature transmitter 218 are settable In the downstream of primary heater 212, consequently facilitating controlling primary heater 212 according to the temperature of cooling medium.
Preferably, filter 214 can be set in the pipeline of the outlet side of circulating pump 211, it is miscellaneous in cooling medium to filter Matter.Air bleeding valve 215 can be used to the air in discharge system.In order to ensure also to can be set on system safety, second circulation pipeline L2 There is safety valve 216.
It can be seen from Fig. 1, pump station part 210 may include circulating pump 211 as described above, primary heater 212, expansion drum 213rd, inlet pressure transmitter 219, outlet pressure transmitter 217, outlet temperature transmitter 218, filter 214, air bleeding valve 215th, safety valve 216 and floss hole 210a etc. is filled.These parts of pump station part 210 are integrated in mainframe 200, Mainframe 200 will hereinafter be described in detail.
In addition, as shown in fig. 1, not flowed when external heat exchanger 300 is connected to step-up transformer 100 by circulation line L3 Through mainframe 200 and other parts to be cooled, so as to shorten the length of whole circulation line, cooling effectiveness is improved.In addition, Because circulation line is being no longer attached to mainframe 200 after external heat exchanger 300 so that the pipeline cloth of mainframe 200 Line is greatly simplified.It can further be seen from figure 1 that according to above-mentioned pipe-line layout so that the valve needed for whole cooling system is very It is few, system architecture is further simplify, production cost is reduced, assembled in situ efficiency is improved.Further, since on circulation line Set inlet pressure transmitter 219, outlet pressure transmitter 217 and outlet temperature transmitter 218, can be effectively in real time The first circulation pipeline L1 of cooling system and the state of the cooling medium in second circulation pipeline L2 are monitored, even if according to as above institute Simplified line arrangement is stated, the service behaviour and efficiency of cooling system can be effectively ensured that.
The course of work of cooling system is described in detail below.
Step-up transformer 100 produces heat when working, the driving cooling medium circulation of circulating pump 211 makes cooling medium in stream During through the transformer heat exchanger supporting with step-up transformer 100, heat is constantly taken out of, and when cooling medium is handed over by outside heat During parallel operation 300, distributed heat to by carrying out heat exchange with external heat exchanger 300 in air, so as to realize cooling system The radiating united to step-up transformer 100.Step-up transformer 100 can be oil immersed type step-up transformer, and transformer heat exchanger can be with To make oil carry out the device of heat exchanger with cooling medium.
When environment temperature is relatively low and coolant temperature is less than temperature needed for pump housing operation, start primary heater 212, Cooling medium is heated to the operating temperature value needed for pump housing operation, so as to ensure that pump housing machine envelope operates in suitable operating temperature It is interval.
Below with reference to concrete structure of Fig. 2 and Fig. 3 descriptions according to the mainframe 200 of embodiment of the present utility model.It is main Rack 200 is arranged in tower by bottom base of cabinet body 10.
Pump station part 210 as described above is arranged in mainframe 200, in addition, being also integrated with control unit in mainframe 200 Divide 220, and separated pump station part 210 and control section 220 by the dividing plate 2 of metal material.Specifically, mainframe 200 Including cabinet 11, cabinet 11 is in cubic shaped and is provided with receiving space, and the receiving space is divided into two parts by dividing plate 2, Upper space is referred to as first compartment 600, and lower space is referred to as second compartment 800, and the control section 220 of cooling system is arranged on In one compartment 600, pump station part 210 is arranged in second compartment 800.
Control section 220 mainly includes programmable logic controller (PLC) (PLC) part 5, distribution component part 6, binding post Row 7, arrange 3 and distribution master switch 9 etc., to realize the control to cooling system.For example, PLC parts major control cooling system The startup of system, stopping, state (temperature, pressure etc.) monitoring, the start and stop of the blower fan of fault alarm and external heat exchanger 300 Deng.Distribution component part 6 is used for the electromechanics such as circulating pump 211, primary heater 212, external heat exchanger 300 into cooling system Equipment is powered.Distribution master switch 9 is arranged on the side plate inside cabinet 11, for the general supply of on/off mainframe, is realized Security protection in maintenance/safeguard.However, control section 220 is not limited to above-mentioned part, it may also include for controlling cooling system The miscellaneous part of system.
In addition, being additionally provided with radiator fan (not shown) and secondary heater 4 in first compartment 600, radiator fan is used for Control section 220 is radiated, secondary heater 4 is used to heat control section 220, radiator fan and the second heating Device 4, when the temperature in first compartment 600 is higher, can only be run according to the temperature change selective operation in first compartment 600 Radiator fan is used to reduce the temperature in first compartment 600, and when the temperature in first compartment 600 is relatively low, secondary heater 4 is used In improving the temperature in first compartment 600, prevent from wherein producing condensation and ensure the normal operation of wherein part, now may be selected Run radiator fan to property.
Cabinet 11 can use the TS standard cabinet types of stainless steel, be effectively increased space in cabinet, its IP (INGRESS PROTECTION) degree of protection is preferably IP54, so that with good corrosion resistance.In addition, cabinet 11 uses surface Plastic-spraying processing, further enhances anti salt spray corrosion function.
Dividing plate 2 is made up of metal material, so as to effectively shield electromagnetism of the pump station part 210 to control section 220 Interference.In addition, being formed with multiple holes on dividing plate 2, PG joints 8 can be installed in the hole, for locking control section 220 and pump The connection cable stood between part 210, so that in the control section 220 in realizing first compartment 600 and second compartment 800 Ensure to be separated completely between first compartment 600 and second compartment 800 while cable connection between pump station part 210, Effectively prevent pump station part 210 to the electromagnetic interference of control section 220.
In addition, the control section 220 and pump station part 210 in cabinet 11 need to be connected with outside line or pipeline, therefore Although it has not been shown on the figures, but pipeline or circuit in cabinet 11 can extend to outside cabinet, in this case, with dividing plate 2 It is similar, hole can be formed with the side wall of cabinet 11, PG joints 8 are installed in the hole, and pipeline is realized while sealing is ensured With the connection of circuit.
According to embodiment of the present utility model, the radiating requirements with step-up transformer, global optimization collection are laid out according to tower Into cooling system, make that pipe-line layout is more rationally simple, reduce cost, improve assembled in situ efficiency.By in a cooling system Firing equipment is set, condition of work of the step-up transformer in low temperature is not only met, and can prevent cooling system middle pump body machine from sealing Damaged under prolonged cold working condition, improve water cooling efficiency.
Moreover, by making the mainframe of cooling system while accommodating pumping station system and control system and being incited somebody to action by metal partion (metp) It is separated into above and below two spaces, realize compact cooling system and it is cost-effective while enhance anti-electromagnetic interference effect Really.
By using the cabinet of high-protection level, it is to avoid cabinet and its part of inside are by salt air corrosion.
Further, since the clear in structure of mainframe, layout are simple, cost is low, practicality is high.
Although exemplary embodiment of the present utility model is described in detail above, those skilled in the art should manage Solution, in the case where not departing from principle of the present utility model and spirit, can make various modifications to embodiment of the present utility model And deformation.It is understood that in the opinion of those skilled in the art, these modification and variation will fall into claim and be limited The utility model in the range of.

Claims (10)

1. a kind of transformer cooling system, the transformer cooling system is used to cooling down being located inside tower of wind power generating set Step-up transformer (100), it is characterised in that the transformer cooling system includes being arranged on mainframe inside the tower (200) external heat exchanger (300), being arranged on outside the tower and the transformation supporting with the step-up transformer (100) Device heat exchanger, wherein, the outlet of the transformer heat exchanger is connected in the mainframe (200) by first circulation pipeline (L1) Pump station part (210) circulating pump (211) entrance, second circulation pipeline (L2) connects the outlet of the circulating pump (211) It is connected to the entrance of the external heat exchanger (300), the 3rd circulation line (L3) is located at the outside of the mainframe (200) by institute The outlet for stating external heat exchanger (300) is connected to the entrance of the transformer heat exchanger.
2. transformer cooling system as claimed in claim 1, it is characterised in that the pump station part (210) also includes first Heater (212), the primary heater (212) is arranged on second circulation pipeline (L2).
3. transformer cooling system as claimed in claim 1, it is characterised in that be integrated with the mainframe (200) described Pump station part (210) and control section (220), and by the dividing plate (2) of metal material by the pump station part (210) and described Control section (220) is separated.
4. transformer cooling system as claimed in claim 3, it is characterised in that the dividing plate (2) is by the mainframe (200) In inner space be divided into superposed first compartment (600) and the second compartment (800) positioned at bottom, the control unit (220) are divided to be arranged in first compartment (600), the pump station part (210) is arranged in the second compartment (800).
5. transformer cooling system as claimed in claim 4, it is characterised in that the control section (220) and the pumping plant Partly the connection cable between (210) is locked by PG joints (8), and the PG joints (8) are arranged on the dividing plate (2).
6. transformer cooling system as claimed in claim 4, it is characterised in that be additionally provided with the first compartment (600) Radiator fan and secondary heater (4).
7. transformer cooling system as claimed in claim 1, it is characterised in that the first circulation pipeline (L1) branches out point Bye-pass (L4), the expansion drum (213) of pump station part (210) is arranged on the branch line (L4).
8. transformer cooling system as claimed in claim 1, it is characterised in that the pump station part (210) also includes entrance Pressure transmitter (219), outlet pressure transmitter (217) and outlet temperature transmitter (218), the inlet pressure transmitter (219) it is arranged on the first circulation pipeline (L1), the outlet pressure transmitter (217) and the outlet temperature transmitter (218) it is arranged on the second circulation pipeline (L2).
9. transformer cooling system as claimed in claim 8, it is characterised in that the pump station part (210) also includes safety Valve (216) and air bleeding valve (215), the safety valve (216) and the air bleeding valve (215) are arranged on the second circulation pipeline (L2) on.
10. a kind of wind power generating set, it is characterised in that the wind power generating set includes being located at the boosting transformation inside tower Device (100) and the transformer cooling system as described in claim any one of 1-9.
CN201720389991.6U 2017-04-13 2017-04-13 Transformer cooling system and the wind power generating set including the cooling system Active CN206619467U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720389991.6U CN206619467U (en) 2017-04-13 2017-04-13 Transformer cooling system and the wind power generating set including the cooling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720389991.6U CN206619467U (en) 2017-04-13 2017-04-13 Transformer cooling system and the wind power generating set including the cooling system

Publications (1)

Publication Number Publication Date
CN206619467U true CN206619467U (en) 2017-11-07

Family

ID=60223374

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720389991.6U Active CN206619467U (en) 2017-04-13 2017-04-13 Transformer cooling system and the wind power generating set including the cooling system

Country Status (1)

Country Link
CN (1) CN206619467U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021114378A1 (en) * 2019-12-10 2021-06-17 广州高澜节能技术股份有限公司 Liquid-cooled pump station applicable in offshore wind power

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021114378A1 (en) * 2019-12-10 2021-06-17 广州高澜节能技术股份有限公司 Liquid-cooled pump station applicable in offshore wind power

Similar Documents

Publication Publication Date Title
US9091460B2 (en) System and a method of operating a plurality of geothermal heat extraction borehole wells
CN101183808B (en) Stator structure of inner cooling type self-circulation vaporization cooling wind power generator
EP2527650B1 (en) System to cool the nacelle and the heat generating components of an offshore wind turbine
CN102360746B (en) Transformer forced oil circulation cooler
CN102678472A (en) Cooling device for wind generating set and wind generating set
US20140299174A1 (en) System of geothermal cooling for photovoltaic solar panels and application thereof
CN202189648U (en) Forced oil circulation cooler for transformer
CN206274708U (en) Wind power generating set CRS Coolant Recovery System
CN103884037A (en) Circulating water heat exchange system of heating network
CN105042888A (en) Natural gas pipeline anti-frost-heaving system combined with thermoelectric power generation and solar energy
CN206619467U (en) Transformer cooling system and the wind power generating set including the cooling system
CN205378469U (en) High -power water cooling system
CN101392729B (en) Wind power generator cooled by solar injection
CN104900380A (en) Cooling system of offshore wind power main transformer
CN100538929C (en) The cooling device of power transformer
CN106793698A (en) Closed cooling system of wind generating set
CN210374560U (en) Intermittent working electric furnace suitable for cold zone
CN201869090U (en) Current transformer for offshore wind generating set
CN108153352A (en) Cooling device, system and method for electrical cabinet and wind driven generator
US11885310B2 (en) Cooling system and wind power generator set
CN206400378U (en) For the cooling device of regulator cubicle, system and wind-driven generator
JP2010203686A (en) Storage type hot water supply device
CN207039434U (en) The cooling device and wind electric converter of a kind of wind electric converter
CN202110831U (en) Cooling system of nuclear power station
CN202018028U (en) Closed circulation water cooler for power station boilers

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant