CN204967540U - Outer evaporation formula cooling system of generator motor - Google Patents
Outer evaporation formula cooling system of generator motor Download PDFInfo
- Publication number
- CN204967540U CN204967540U CN201520509619.5U CN201520509619U CN204967540U CN 204967540 U CN204967540 U CN 204967540U CN 201520509619 U CN201520509619 U CN 201520509619U CN 204967540 U CN204967540 U CN 204967540U
- Authority
- CN
- China
- Prior art keywords
- generator motor
- liquid phase
- condenser
- compressor
- expansion valve
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- 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.)
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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 27
- 238000001704 evaporation Methods 0.000 title claims abstract description 12
- 230000008020 evaporation Effects 0.000 title abstract 2
- 239000003507 refrigerant Substances 0.000 claims abstract description 31
- 239000000498 cooling water Substances 0.000 claims abstract description 14
- 239000007791 liquid phase Substances 0.000 claims abstract description 12
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 239000012071 phase Substances 0.000 claims description 13
- 239000011555 saturated liquid Substances 0.000 claims description 6
- 239000013526 supercooled liquid Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 108091023288 HOTAIR Proteins 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 4
- 238000010977 unit operation Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model provides an outer evaporation formula cooling system of generator motor, include: evaporimeter, compressor, condenser and expansion valve, the compressor is connected to the evaporimeter, and the condenser is connected to the compressor, and the expansion valve is connected to the condenser, and the evaporimeter is connected to the expansion valve, hot -air that temperature that the generator motor flows be ta1 in the evaporimeter with the heat transfer of liquid phase refrigerant, the liquid phase refrigerant becomes the saturated refrigerant vapor of low pressure, the hot -air of generator motor is cooled off to ta2, low pressure saturation refrigerant generates high -pressure overheated refrigerant vapor through compressor adiabatic compression, the overheated refrigerant vapor of high pressure in the condenser with the cooling water heat transfer, generate subcooling liquid phase refrigerant, subcooling liquid phase refrigerant generates low pressure saturation liquid phase refrigerant behind the expansion valve adiabatic expansion, low pressure saturation liquid phase refrigerant flows in the evaporimeter, and the hot -air that flows to the generator motor cools off.
Description
Technical field
The utility model relates to the cooling field of generator motor, particularly relates to a kind of cooling system of generator motor, is a kind of outer evaporating type cooling system of generator motor concretely.
Background technology
Pumped storage is as accumulation power supply best at present, can network load is low time unnecessary electric energy, change the high value electric energy of electrical network peak reality into, also be applicable to peak regulation, phase modulation, the cycle of stable power system and voltage, and there is emergency duty, improve the function of thermoelectricity, nuclear power efficiency in electric power system.
But, along with the lifting of pump-storage generator single-machine capacity, unit generation motor and the not good problem of thrust bearing cooling effect increasingly severe, the restraining factors that cooling problem has become power plant safety stable operation, capacity of power unit promotes further of the too high problem of generator motor thrust bearing shoe temperature, generator motor.At present, pumped storage machine generally adopts cooling air mode, its cooling process is that the hot blast flowed out from electricity generation and electromotion machine stator flows into stator peripheral aerial cooler to cooling water heat release, and cooled air again inflow generator is inner, circulating cooling like this.
But the major defect of this existing technology has:
1, waste energy, the heat that generator motor produces is by after absorption of air, through aerial cooler to cooling water drainage thermal discharge, finally be discharged in environment and go, according to single-machine capacity 300,000 kilowatts of units, electricity generation and electromotion engine efficiency 98%, then add cooling water supply conveying merit, namely there are at least 6000 Kilowatt of Energy not add utilization directly to go discharged in environment, cause a large amount of energy wastes;
2, the temperature that the existing type of cooling supplies water by cooling affects larger, pump-storage generator cooling water is from draft tube, during summer peak meeting, upper and lower water temperature of reservoir is higher, the temperature of cooling water is higher, the heat transfer temperature difference of cooling water and generator hot blast is little, causes generator motor and the increasing influenced by ambient temperature of thrust bearing cooling effect thereof, affects the safe and stable operation of unit.
Utility model content
Affect by cooling water comparatively large to solve the existing type of cooling, and can cause the problem of energy waste, the utility model provides a kind of waste heat of generator motor that utilizes and carries out the cooling system freezed.
The utility model embodiment provides a kind of outer evaporating type cooling system of generator motor, comprising: evaporator, compressor, condenser and expansion valve; Described evaporator connects described compressor, and described compressor connects described condenser, and described condenser connects described expansion valve, and described expansion valve connects described evaporator; The temperature that described generator motor flows out is t
a1hot-air in described evaporator with liquid phase refrigerant heat exchange, described liquid phase refrigerant becomes the saturated refrigerant vapour of low pressure, and the hot-air of described generator motor is cooled to t
a2; The saturated cold-producing medium of described low pressure, through described compressor adiabatic compression, generates high pressure superheater refrigerant vapour; Described high pressure superheater refrigerant vapour in described condenser with cooling water heat exchange, generate supercooled liquid phase cold-producing medium; Described supercooled liquid phase cold-producing medium, after described expansion valve adiabatic expansion, generates the saturated liquid phase refrigerant of low pressure; Described low pressure saturated liquid phase flow of refrigerant enters described evaporator, cools the hot-air that described generator motor flows out.
Further, in one embodiment, the temperature of the cooling water in described condenser in heat transfer process by t
w1rise to t
w2.
Further, in one embodiment, connected by pipeline between described evaporator, compressor, condenser and expansion valve.
By the outer evaporating type cooling system of generator motor of the present utility model, the adaptability of generator motor cooling effect to ambient temperature can be improved, can effectively reduce generator motor, thrust bearing temperature simultaneously, improve the fail safe of unit operation.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the outer evaporating type cooling system of the generator motor of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the structural representation of the outer evaporating type cooling system of the generator motor of the utility model embodiment.As shown in the figure, the outer evaporating type cooling system of the generator motor of the present embodiment comprises: evaporator, compressor, condenser and expansion valve; Described evaporator connects described compressor, and described compressor connects described condenser, and described condenser connects described expansion valve, and described expansion valve connects described evaporator.Connected by pipeline between described evaporator, compressor, condenser and expansion valve.
The temperature that described generator motor flows out is t
a1hot-air be p with state in described evaporator
4, t
4liquid phase refrigerant heat exchange, it is p that described liquid phase refrigerant becomes state
1, t
1the saturated refrigerant vapour (p of low pressure
1=p
4), the hot-air of described generator motor is cooled to t
a2;
State is p
1, t
1the saturated cold-producing medium of low pressure through described compressor adiabatic compression, generation state is p
2, t
2high pressure superheater refrigerant vapour;
State is p
2, t
2high pressure superheater refrigerant vapour in described condenser with cooling water heat exchange, generation state is p
3, t
3supercooled liquid phase cold-producing medium, the temperature of the cooling water in condenser in heat transfer process by t
w1rise to t
w2;
State is p
3, t
3supercooled liquid phase cold-producing medium after described expansion valve adiabatic expansion, generation state is p
4, t
4the saturated liquid phase refrigerant of low pressure;
State is p
4, t
4low pressure saturated liquid phase flow of refrigerant enter described evaporator, the hot-air that described generator motor flows out is cooled, completes and once circulate.
Adopt cooling means of the present utility model, the outlet cold wind temperature of aerial cooler can realize the temperature of 15-35 DEG C of scope under most bad working environments in summer and regulate, greatly improve the adaptability of generator motor cooling effect to ambient temperature and the stability of unit operation, in addition owing to adopting the utility model, can effectively reduce generator motor, thrust bearing temperature, improve the fail safe of unit operation.
Apply specific embodiment in the utility model to set forth principle of the present utility model and execution mode, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (3)
1. an outer evaporating type cooling system for generator motor, is characterized in that, described system comprises: evaporator, compressor, condenser and expansion valve;
Described evaporator connects described compressor, and described compressor connects described condenser, and described condenser connects described expansion valve, and described expansion valve connects described evaporator;
The temperature that described generator motor flows out is t
a1hot-air in described evaporator with liquid phase refrigerant heat exchange, described liquid phase refrigerant becomes the saturated refrigerant vapour of low pressure, and the hot-air of described generator motor is cooled to t
a2;
The saturated cold-producing medium of described low pressure, through described compressor adiabatic compression, generates high pressure superheater refrigerant vapour;
Described high pressure superheater refrigerant vapour in described condenser with cooling water heat exchange, generate supercooled liquid phase cold-producing medium;
Described supercooled liquid phase cold-producing medium, after described expansion valve adiabatic expansion, generates the saturated liquid phase refrigerant of low pressure;
Described low pressure saturated liquid phase flow of refrigerant enters described evaporator, cools the hot-air that described generator motor flows out.
2. the outer evaporating type cooling system of generator motor according to claim 1, is characterized in that, the temperature of the cooling water in described condenser in heat transfer process by t
w1rise to t
w2.
3. the outer evaporating type cooling system of generator motor according to claim 1, is characterized in that, is connected between described evaporator, compressor, condenser and expansion valve by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509619.5U CN204967540U (en) | 2015-07-14 | 2015-07-14 | Outer evaporation formula cooling system of generator motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509619.5U CN204967540U (en) | 2015-07-14 | 2015-07-14 | Outer evaporation formula cooling system of generator motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204967540U true CN204967540U (en) | 2016-01-13 |
Family
ID=55062580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520509619.5U Active CN204967540U (en) | 2015-07-14 | 2015-07-14 | Outer evaporation formula cooling system of generator motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204967540U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979960A (en) * | 2015-07-14 | 2015-10-14 | 国家电网公司 | External evaporation-type cooling system for generator motor |
| CN109831070A (en) * | 2019-03-27 | 2019-05-31 | 宁波北仑捷仑机电设备有限公司 | A kind of servo motor cooling system |
-
2015
- 2015-07-14 CN CN201520509619.5U patent/CN204967540U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979960A (en) * | 2015-07-14 | 2015-10-14 | 国家电网公司 | External evaporation-type cooling system for generator motor |
| CN109831070A (en) * | 2019-03-27 | 2019-05-31 | 宁波北仑捷仑机电设备有限公司 | A kind of servo motor cooling system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |