CN113566619A - Integrated cooling system for gearbox and frequency converter of wind turbine generator - Google Patents
Integrated cooling system for gearbox and frequency converter of wind turbine generator Download PDFInfo
- Publication number
- CN113566619A CN113566619A CN202110722739.3A CN202110722739A CN113566619A CN 113566619 A CN113566619 A CN 113566619A CN 202110722739 A CN202110722739 A CN 202110722739A CN 113566619 A CN113566619 A CN 113566619A
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- Prior art keywords
- plate
- circulation
- frequency converter
- fluid
- hot fluid
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- 238000001816 cooling Methods 0.000 title claims abstract description 55
- 239000012530 fluid Substances 0.000 claims abstract description 118
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 230000017525 heat dissipation Effects 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 5
- 230000005514 two-phase flow Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/60—Cooling or heating of wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20936—Liquid coolant with phase change
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- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses an integrated cooling system for a frequency converter of a gear box of a wind turbine generator, which comprises a frequency converter cooling circulation, a gear box cooling circulation and a pump drive two-phase heat dissipation circulation; the frequency converter cooling circulation consists of a frequency converter, a micro-channel heat exchanger, a circulating pump, a liquid storage tank and a plate type heat exchanger; the gear box cooling circulation system consists of a gear box, an oil pump and a plate heat exchanger; the pump-driven two-phase heat dissipation circulation consists of a circulating pump, a plate-fin condenser and a plate heat exchanger; the frequency converter cooling circulation, the gear box cooling circulation and the pump drive two-phase heat dissipation circulation share one plate heat exchanger; the plate heat exchanger is provided with three fluid channels, and the frequency converter cooling circulation, the gear box cooling circulation and the pump drive two-phase heat dissipation circulation respectively use one fluid channel. According to the integrated cooling system for the frequency converter of the wind turbine generator gearbox, the cooling circulation of the frequency converter and the cooling circulation of the gearbox share one plate type heat exchanger, so that the structure is compact.
Description
Technical Field
The invention relates to an integrated cooling system for a frequency converter of a gear box of a wind turbine generator, in particular to an integrated cooling system for absorbing the frequency converter and the gear box of the wind turbine generator based on integration of the frequency converter and the gear box.
Background
The wind power generation has important significance for improving the energy structure of China, protecting the ecological environment and realizing the economic sustainable development. However, with the development of wind turbine generators towards high capacity, integration and intellectualization, the heat productivity of the internal frequency converter and the gear box rises sharply, so that frequent shutdown accidents of the wind turbine generators caused by overhigh temperature of the frequency converter and the gear box are caused, and the expansion of the construction scale of the wind turbine generators and the promotion of the economic benefits of wind power generation are severely restricted.
The traditional heat dissipation of the cabin body of the wind turbine generator adopts a single-phase convection cooling technology, namely, the heat dissipation of the cabin body is realized by means of convection heat exchange between external fluid such as air or liquid and equipment such as a frequency converter, a gear box and the like in the cabin body, and the traditional heat dissipation of the cabin body of the wind turbine generator is simple in structure, low in cost and less in energy consumption. The single-phase convection heat dissipation limit is not high, the heat dissipation requirements of a high-power frequency converter and a high-rotating-speed gear box cannot be met, the situation that high-temperature alarm shutdown accidents occur when a wind turbine generator is operated on site due to overhigh temperature of the frequency converter or the gear box easily occurs, huge power generation loss and economic loss are caused, the stability of a power grid is influenced, and serious potential safety hazards exist. Aiming at the defects and shortcomings of the prior art, the invention provides an integrated cooling system for absorbing a frequency converter and a gear box of a wind turbine generator based on three closed circulation loops, which has high energy transmission efficiency and strong temperature control capability, can efficiently transmit heat generated by the frequency converter and the gear box to the external environment, effectively reduces the temperature level of the wind turbine generator, reduces the fault shutdown probability of the wind turbine generator, and improves the economic benefit of power generation.
Disclosure of Invention
Technical problem
The invention aims to solve the technical problem of providing a high-heat-dissipation integrated cooling system for a frequency converter of a gearbox of a wind turbine generator, aiming at the defects of the prior art.
Technical scheme
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a wind turbine generator system gear box converter integrated form cooling system which characterized in that: the method comprises frequency converter cooling circulation, gear box cooling circulation and pump drive two-phase heat dissipation circulation; the frequency converter cooling circulation consists of a frequency converter, a micro-channel heat exchanger, a circulating pump, a liquid storage tank and a plate type heat exchanger; the gear box cooling circulation system consists of a gear box, an oil pump and a plate heat exchanger; the pump-driven two-phase heat dissipation circulation consists of a circulating pump, a plate-fin condenser and a plate heat exchanger; the frequency converter cooling circulation, the gear box cooling circulation and the pump drive two-phase heat dissipation circulation share one plate heat exchanger; the plate heat exchanger is provided with three fluid channels, and the frequency converter cooling circulation, the gear box cooling circulation and the pump drive two-phase heat dissipation circulation respectively use one fluid channel.
The plate heat exchanger comprises a heat exchange plate formed by alternately superposing a cold fluid plate and a hot fluid plate, wherein a cold fluid circulation cavity, a first hot fluid circulation cavity and a second hot fluid circulation cavity are arranged in the heat exchange plate; a cold fluid inlet, a cold fluid outlet, a first hot fluid inlet, a first hot fluid outlet, a second hot fluid inlet and a second hot fluid outlet are also arranged on the heat exchange plate; the cold fluid inlet and the cold fluid outlet are communicated with the cold fluid circulating cavity; the first hot fluid inlet and the first hot fluid outlet are communicated with the first hot fluid circulation cavity; the second hot fluid inlet and the second hot fluid outlet are communicated with the first hot fluid circulation cavity.
The first hot fluid circulation cavity and the second hot fluid circulation cavity are arranged between the same cold fluid plate and the same hot fluid plate; the cold fluid circulation chamber is arranged between a cold fluid plate and a hot fluid plate.
The first thermal fluid circulation chamber and the second thermal fluid chamber are formed by a channel arranged on a thermal fluid plate; the cold fluid flow chamber is formed by a channel provided in a cold fluid plate.
The channel positioned on the heat fluid plate is in a corrugated shape; the channels in the cold fluid plate are corrugated.
Working media in the pump-driven two-phase heat dissipation circulation enter the plate heat exchanger, simultaneously absorb heat of the frequency converter cooling circulation and the gear box cooling circulation and are converted into a gas-liquid two-phase state, then enter a condenser outside the wind turbine generator to be condensed and released, the heat is released to the external environment, and finally enters the plate heat exchanger again to be recycled under the action of the circulating pump.
The liquid coolant in the frequency converter cooling circulation absorbs heat generated by the frequency converter and then becomes a gas-liquid two-phase state, then enters the plate heat exchanger under the action of the circulating pump, liquid working medium flowing out of the plate heat exchanger passes through the liquid storage tank, the liquid storage tank is used for storing the working medium and also has the function of stabilizing pressure, and the liquid flowing out of the liquid storage tank enters the frequency converter and is used for cooling the frequency converter to complete one-time circulation.
The cooling working medium in the cooling circulation of the gear box is gear box lubricating oil, the temperature of the lubricating oil is increased after the lubricating oil absorbs heat generated by the gear set in the gear box, the lubricating oil enters the plate type heat exchanger under the action of the oil pump for heat exchange, and then the lubricating oil enters the plate type heat exchanger for recirculation under the action of the oil pump.
Advantageous effects
Firstly, according to the integrated cooling system for the frequency converter of the gearbox of the wind turbine generator, the cooling circulation of the frequency converter and the cooling circulation of the gearbox share one plate type heat exchanger, so that the structure is compact.
Secondly, the system introduces a pump-driven two-phase flow heat dissipation technology into the field of wind turbine generator heat dissipation, and compared with the traditional single-phase forced convection heat dissipation technology, the pump-driven two-phase flow heat dissipation technology has a higher heat exchange limit.
Thirdly, the liquid storage tank is arranged in the system, the back pressure of the liquid storage tank pressure regulating system is changed, the saturation temperature of the working medium is changed, the accurate control of the working temperature of the heating equipment is realized, and the alarm shutdown accident of the generator set caused by overhigh temperature can be effectively reduced.
Drawings
FIG. 1 is a schematic structural diagram of an integrated cooling system of a gearbox and a frequency converter of a wind turbine generator according to the present invention;
FIG. 2 is a schematic view of the plate heat exchanger of the present invention;
in the figure: 1-frequency converter, 2-circulating pump, 3-liquid storage tank, 4-plate heat exchanger, 5-gear box, 6-oil pump, 7-circulating pump, 8-plate-fin condenser, 9-cold fluid plate, 10-hot fluid plate, 11-cold fluid inlet, 12-cold fluid outlet, 13-first hot fluid inlet, 14-first hot fluid outlet, 15-second hot fluid inlet, and 16-second hot fluid outlet.
Detailed Description
The invention is further described with reference to the accompanying drawings in which:
as shown in figure 1, the integrated cooling system for the frequency converter of the gearbox of the wind turbine generator comprises a frequency converter 1, a circulating pump 2, a liquid storage tank 3, a plate type heat exchanger 4, a gearbox 5, an oil pump 6, a circulating pump 7 and a plate-fin condenser 8.
The flowing working medium in the frequency converter cooling circulation absorbs the heat of the frequency converter 1 of the wind turbine generator to generate a flowing boiling phenomenon, part of liquid is boiled into gas, the liquid state at the inlet is changed into a gas-liquid two-phase flow state at the outlet, and then the gas-liquid two-phase flow state passes through the plate heat exchanger 4 under the action of the circulating pump 2; the plate heat exchanger 4 is connected with the plate-fin condenser 8 through the circulating pump 7, the working medium in a gas-liquid two-phase state emits heat to the plate-fin condenser 8 under the action of the circulating pump 7, the gaseous working medium is condensed into a liquid state, and the gas-liquid two-phase flow state at the inlet is converted into a liquid state at the outlet; the liquid working medium flowing out of the plate heat exchanger 4 passes through the liquid storage tank 3, the liquid storage tank 3 is used for storing the working medium and also has the function of stabilizing the pressure, and the liquid flowing out of the liquid storage tank 3 enters the frequency converter 1 and is used for cooling the frequency converter 1 to complete primary circulation; in the cooling circulation of the gear box, the gear box oil absorbs heat generated by the gear box 5, part of liquid is boiled into gas, then the gas is subjected to heat exchange through the plate heat exchanger 4 under the action of the oil pump 2, and the working medium after heat exchange is used for flowing into the gear box 5 to complete one circulation.
As shown in fig. 2, the plate heat exchanger of the present invention is a three-channel plate heat exchanger, and includes a cold fluid plate 9, a hot fluid plate 10, a cold fluid inlet 11, a cold fluid outlet 12, a first hot fluid inlet 13, a first hot fluid outlet 14, a second hot fluid inlet 15, and a second hot fluid outlet 16.
In one embodiment, the heat exchanger plates of a plate heat exchanger are formed by stacking a cold fluid plate 9 and a hot fluid plate 10.
In one embodiment, at least one of the surfaces of the cold fluid plate 9 and the hot fluid plate 10 has a corrugated shape, by means of which a fluid chamber is formed between the cold fluid plate 9 and the hot fluid plate 10.
In one embodiment, the corrugated shape is provided on only one face of the cold fluid plate 9 and the hot fluid plate 10, while the other face of the cold fluid plate 9 and the hot fluid plate 10 is a perfect plane.
The cold fluid plate 9 and the hot fluid plate 10 are stacked together for heat exchange, and the working fluid flows in a narrow and zigzag corrugated channel formed between the two plates. Cold fluid enters the plate heat exchanger from a cold fluid inlet 11 and flows through a cold fluid plate 9, and flows out from a cold fluid outlet 12 after heat exchange is carried out inside; two different hot fluid working mediums respectively enter the hot fluid plate 10 from the first hot fluid inlet 13 and the second hot fluid inlet 15, the hot fluid plate 10 is spaced from the middle, meanwhile, heat exchange can be simultaneously carried out with the cold fluid plate 9 through the two different working mediums, and the hot fluid after heat exchange respectively flows out of the plate heat exchanger from the first hot fluid outlet 14 and the second hot fluid outlet 16.
The foregoing is only a preferred embodiment of the present invention and other useful embodiments are possible. To those skilled in the art, effective modifications based on the present invention should also be considered as within the scope of the present invention.
Claims (5)
1. The utility model provides a wind turbine generator system gear box converter integrated form cooling system which characterized in that: the method comprises frequency converter cooling circulation, gear box cooling circulation and pump drive two-phase heat dissipation circulation; the frequency converter cooling circulation consists of a frequency converter, a micro-channel heat exchanger, a circulating pump, a liquid storage tank and a plate type heat exchanger; the gear box cooling circulation system consists of a gear box, an oil pump and a plate heat exchanger; the pump-driven two-phase heat dissipation circulation consists of a circulating pump, a plate-fin condenser and a plate heat exchanger; the frequency converter cooling circulation, the gear box cooling circulation and the pump drive two-phase heat dissipation circulation share one plate heat exchanger; the plate heat exchanger is provided with three fluid channels, and the frequency converter cooling circulation, the gear box cooling circulation and the pump drive two-phase heat dissipation circulation respectively use one fluid channel.
2. The integrated cooling system of a wind turbine gearbox frequency converter according to claim 1, wherein: the plate heat exchanger comprises a heat exchange plate formed by alternately superposing a cold fluid plate and a hot fluid plate, wherein a cold fluid circulation cavity, a first hot fluid circulation cavity and a second hot fluid circulation cavity are arranged in the heat exchange plate; a cold fluid inlet, a cold fluid outlet, a first hot fluid inlet, a first hot fluid outlet, a second hot fluid inlet and a second hot fluid outlet are also arranged on the heat exchange plate; the cold fluid inlet and the cold fluid outlet are communicated with the cold fluid circulating cavity; the first hot fluid inlet and the first hot fluid outlet are communicated with the first hot fluid circulation cavity; the second hot fluid inlet and the second hot fluid outlet are communicated with the first hot fluid circulation cavity.
3. The integrated cooling system of wind turbine generator gearbox frequency converter according to claim 2, wherein: the first hot fluid circulation cavity and the second hot fluid circulation cavity are arranged between the same cold fluid plate and the same hot fluid plate; the cold fluid circulation chamber is arranged between a cold fluid plate and a hot fluid plate.
4. The integrated cooling system of wind turbine generator gearbox frequency converter according to claim 3, wherein: the first thermal fluid circulation chamber and the second thermal fluid chamber are formed by a channel arranged on a thermal fluid plate; the cold fluid flow chamber is formed by a channel provided in a cold fluid plate.
5. The integrated cooling system of wind turbine generator gearbox frequency converter according to claim 4, wherein: the channel positioned on the heat fluid plate is in a corrugated shape; the channels in the cold fluid plate are corrugated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110722739.3A CN113566619A (en) | 2021-06-29 | 2021-06-29 | Integrated cooling system for gearbox and frequency converter of wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110722739.3A CN113566619A (en) | 2021-06-29 | 2021-06-29 | Integrated cooling system for gearbox and frequency converter of wind turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113566619A true CN113566619A (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110722739.3A Pending CN113566619A (en) | 2021-06-29 | 2021-06-29 | Integrated cooling system for gearbox and frequency converter of wind turbine generator |
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| CN (1) | CN113566619A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201957389U (en) * | 2011-02-18 | 2011-08-31 | 华锐风电科技(江苏)有限公司 | Integral cooling system of wind generating set |
| CN104315757A (en) * | 2014-10-28 | 2015-01-28 | 武汉微冷科技有限公司 | Miniature heat exchanger integrating condensing, throttling and evaporation |
| CN106403669A (en) * | 2015-07-28 | 2017-02-15 | 丰田自动车株式会社 | HEAT EXCHANGER FOR VEHICLE and vechile provided therewith |
| CN106989624A (en) * | 2017-05-05 | 2017-07-28 | 仲恺农业工程学院 | A kind of board-like double-dryness shunting heat exchanging evaporator |
| CN111380386A (en) * | 2018-12-28 | 2020-07-07 | 丹佛斯有限公司 | Multi-loop plate heat exchanger |
-
2021
- 2021-06-29 CN CN202110722739.3A patent/CN113566619A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201957389U (en) * | 2011-02-18 | 2011-08-31 | 华锐风电科技(江苏)有限公司 | Integral cooling system of wind generating set |
| CN104315757A (en) * | 2014-10-28 | 2015-01-28 | 武汉微冷科技有限公司 | Miniature heat exchanger integrating condensing, throttling and evaporation |
| CN106403669A (en) * | 2015-07-28 | 2017-02-15 | 丰田自动车株式会社 | HEAT EXCHANGER FOR VEHICLE and vechile provided therewith |
| CN106989624A (en) * | 2017-05-05 | 2017-07-28 | 仲恺农业工程学院 | A kind of board-like double-dryness shunting heat exchanging evaporator |
| CN111380386A (en) * | 2018-12-28 | 2020-07-07 | 丹佛斯有限公司 | Multi-loop plate heat exchanger |
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Application publication date: 20211029 |
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