CN215063820U - Anti-freezing device suitable for air cooling system - Google Patents
Anti-freezing device suitable for air cooling system Download PDFInfo
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- CN215063820U CN215063820U CN202121312232.2U CN202121312232U CN215063820U CN 215063820 U CN215063820 U CN 215063820U CN 202121312232 U CN202121312232 U CN 202121312232U CN 215063820 U CN215063820 U CN 215063820U
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Abstract
The utility model discloses an freeze-proof device suitable for air cooling system, including air cooling island heat dissipation finned tube, air cooling island fan, air filter equipment and malleation freeze-proof device etc.. The utility model discloses an air filter equipment and malleation freeze-proof device are add to the region of freezing stifled, frost crack easily on the heat dissipation finned tube in direct air cooling unit air cooling island. In the low-temperature working condition in winter, when the radiating fin tubes of the air cooling island are in the risk of freezing blockage and frost cracking, the positive-pressure anti-freezing device is started, air is filled into the fin tubes with the possibility of freezing blockage and frost cracking, the air enters the radiating fin tubes after being filtered by the filtering device, the flow field of the water vapor mixture is disturbed, and the water vapor mixture is prevented from freezing, so that the freezing blockage and frost cracking of the radiating fin tubes of the air cooling island are avoided. Through the implementation of the anti-freezing device suitable for the air cooling system, the annual cooling requirement of the direct air cooling unit can be met, the anti-freezing problem of the air cooling island in winter can be solved, the anti-freezing investment is reduced, and the safety and the economical efficiency of the unit operation are improved.
Description
Technical Field
The utility model belongs to power plant boiler and steam turbine system field, concretely relates to freeze-proof device suitable for air cooling system.
Background
With the rapid development of the economy of China, the electric load becomes an important data sign for the growth of the economy of China, and a large number of high-parameter steam turbine generator units are also applied in China in a large quantity. Coal and water are rich in northeast China and northwest China in China, and water resource shortage becomes a restriction factor for economic development of the region. To solve the problem of high-parameter turbines and water resource shortage, air cooling units using air as the cooling medium of a condenser are widely used. Because the air cooling island radiating fin tube bundle is directly exposed in the ambient atmosphere, the flow field temperature field of the air cooling island is easily uneven when the unit runs in winter, so that local freezing is caused, and the lower the rotating speed of the air cooling island fan is, the lower the ambient temperature is, the lower the rotating speed of the fan required for maintaining the same backpressure is, so that local freezing is easily caused, even freezing crack damage is caused, and the unit can not run normally and even has the danger of parking when the unit is serious.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an freeze-proof device suitable for air cooling system, through freezing stifled, the regional air filter and malleation freeze-proof device of addding of easy on the heat dissipation finned tube in direct air cooling unit air cooling island, can satisfy the cooling demand of direct air cooling unit all the year, solve the frostproofing problem in air cooling island winter, reduce and prevent frostbite and drop into, improve the security and the economic nature of unit operation.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
an anti-freezing device suitable for an air cooling system comprises a steam turbine, a condensate pump and an air cooling island;
the steam exhaust outlet of the steam turbine is connected to the steam inlet of the air cooling island, the condensed water outlet of the air cooling island is connected to the heat regeneration system through a condensed water pump, and the heat dissipation fin tube of the air cooling island is connected with the positive pressure anti-freezing device through the air filtering device.
The utility model discloses further improvement lies in, and the bottom in air cooling island is provided with the air cooling island fan.
The utility model discloses further improvement lies in, and the steam inlet department on air cooling island is provided with air cooling island admission door.
The utility model discloses a further improvement lies in, condensate pump's entry and exit department is provided with congeals pump inlet door and congeals pump outlet door.
The utility model discloses further improvement lies in that malleation freeze-proof device can carry out online real-time regulation according to the operation needs in air cooling island, and the operation of throwing at any time withdraws from at any time.
The utility model discloses further improvement lies in, winter low temperature operating mode, when air cooling island heat dissipation fin pipe has frozen stifled, the risk that splits that freezes, starts malleation freeze-proof device.
The utility model discloses further improvement lies in, because the inside negative pressure that is of air cooling island radiating fin pipe, after the malleation freeze-proof device was started, the air got into through malleation freeze-proof device and air filter equipment under the effect of pressure differential has frozen stifled, the possible radiating fin pipe of frost crack, disturbs the flow field of steam mixture.
The utility model discloses further improvement lies in, and the air cooling island is provided with a plurality ofly side by side.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses an air filter equipment and malleation freeze-proof device are add to the region of freezing stifled, frost crack easily on the heat dissipation finned tube in direct air cooling unit air cooling island. In the low-temperature working condition in winter, when the radiating fin tubes of the air cooling island are in the risk of freezing blockage and frost cracking, the positive-pressure anti-freezing device is started, air is filled into the fin tubes with the possibility of freezing blockage and frost cracking, the air enters the radiating fin tubes after being filtered by the filtering device, the flow field of the water vapor mixture is disturbed, and the water vapor mixture is prevented from freezing, so that the freezing blockage and frost cracking of the radiating fin tubes of the air cooling island are avoided. By the implementation of the anti-freezing device and the method suitable for the air cooling system, the annual cooling requirement of the direct air cooling unit can be met, the anti-freezing problem of the air cooling island in winter can be solved, the anti-freezing investment is reduced, and the safety and the economical efficiency of the unit operation are improved. In summary, the utility model has the following advantages:
(1) the quantity and the arrangement mode of the positive pressure antifreezing devices can be designed according to the actual operation requirement of the air cooling island in winter low-temperature weather, and the positive pressure antifreezing devices are arranged in the areas which are easy to freeze and block and are easy to freeze and crack.
(2) The flow field of the water vapor mixture in the area which is easy to freeze and block and is easy to freeze and crack of the tube bundle of the air cooling island can be disturbed in low-temperature weather in winter, and the water vapor mixture is prevented from freezing, so that the freezing and blocking and the freezing and cracking of the heat dissipation fin tube of the air cooling island are avoided, the anti-freezing requirement of the air cooling island is met, the anti-freezing investment is reduced, and the safety and the economical efficiency of unit operation are improved.
(3) The system is flexible in operation, simple in operation and convenient to control, can be put into operation and cut off at any time according to needs, and meets the anti-freezing requirement of the air cooling island.
Drawings
Fig. 1 is a schematic diagram of an anti-freezing device suitable for an air cooling system according to the present invention.
Description of reference numerals:
1. the system comprises a steam turbine, 2, a positive pressure anti-freezing device, 3, an air cooling island steam inlet door, 4, an air cooling island heat dissipation finned tube, 5, an air filtering device, 6, a condensate pump outlet door, 7, a condensate pump, 8, a condensate pump inlet door, 9, an air cooling island fan, 10 and an air cooling island.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and it should be understood that the preferred embodiments are described herein for purposes of illustration and explanation, and not limitation.
As shown in fig. 1, the utility model provides an antifreeze device suitable for air cooling system, which comprises a steam turbine 1, a condensate pump 7 and an air cooling island 10; the steam exhaust outlet of the steam turbine 1 is connected to the steam inlet of the air cooling island 10, the condensed water outlet of the air cooling island 10 is connected to the heat regeneration system through the condensed water pump 7, and the air filtering device 5 and the positive pressure anti-freezing device 2 are additionally arranged in the area which is easy to freeze and block and is easy to freeze and crack on the radiating fin tube 4 of the air cooling island of the direct air cooling unit.
Wherein, the bottom of the air cooling island 10 is provided with an air cooling island fan 9. An air cooling island air inlet valve 3 is arranged at the air inlet of the air cooling island 10. The inlet and outlet of the condensate pump 7 are provided with a condensate pump inlet door 8 and a condensate pump outlet door 6.
Working example 1
In a certain direct air cooling unit, heat dissipation fin pipes of an air cooling island are easy to freeze and block or even crack in low-temperature weather in winter, and the unit can not normally run or even has a parking danger in severe cases. In order to solve the anti-freezing problem of the low-temperature air cooling island in winter of the unit, an air filtering device and a positive pressure anti-freezing device are additionally arranged in an area which is easy to freeze and block and is easy to freeze and crack on a radiating fin tube of the air cooling island of the direct air cooling unit, under the low-temperature working condition in winter, when the radiating fin tube of the air cooling island risks freezing and blocking and frost cracking, the positive pressure anti-freezing device is started, air is filled into the fin tube where freezing and blocking are possible, the air enters the radiating fin tube after being filtered by the filtering device, the flow field of a water vapor mixture is disturbed, the water vapor mixture is prevented from freezing, and therefore freezing and blocking and frost cracking of the radiating fin tube of the air cooling island are avoided. By the implementation of the anti-freezing device and the method suitable for the air cooling system, the annual cooling requirement of the direct air cooling unit can be met, the anti-freezing problem of the air cooling island in winter can be solved, the anti-freezing investment is reduced, and the safety and the economical efficiency of the unit operation are improved.
The anti-freezing device and the anti-freezing method suitable for the air cooling system can start the positive pressure anti-freezing device at the position of the finned tube radiator which is easy to freeze and block and freeze crack according to the operation requirement of the unit, so that the heat dissipation finned tube of the air cooling island is prevented from being frozen and blocked and frozen and cracked.
1. The low-temperature working condition in winter is as follows: the positive pressure anti-freezing device at the finned tube radiator with the risk of freezing blockage and frost cracking can be started according to the air cooling unit which is put into operation, so that the freezing blockage and frost cracking of the radiating finned tubes of the air cooling island are avoided.
2. And other working conditions: and closing the positive pressure anti-freezing device.
By the implementation of the anti-freezing device and the method suitable for the air cooling system, the annual cooling requirement of the direct air cooling unit can be met, the anti-freezing problem of the air cooling island in winter can be solved, the anti-freezing investment is reduced, and the safety and the economical efficiency of the unit operation are improved. The quantity and the arrangement mode of the positive pressure antifreezing devices can be designed according to the actual operation requirement of the air cooling island in winter low-temperature weather, and the positive pressure antifreezing devices are arranged in the areas which are easy to freeze and block and are easy to freeze and crack. The positive-pressure anti-freezing device can disturb the flow field of a water-vapor mixture in an area where a tube bundle of the air cooling island is easy to freeze and block and freeze crack in winter in low-temperature weather, and the water-vapor mixture is prevented from freezing, so that the heat dissipation fin tube of the air cooling island is prevented from freezing and blocking and freeze cracking, the anti-freezing requirement of the air cooling island is met, the system is flexible to operate, simple to operate and convenient to control, and can be put into operation and cut off at any time as required, and the anti-freezing requirement of the air cooling island is met.
Claims (8)
1. An anti-freezing device suitable for an air cooling system is characterized by comprising a steam turbine (1), a condensate pump (7) and an air cooling island (10);
the steam outlet of the steam turbine (1) is connected to the steam inlet of the air cooling island (10), the condensed water outlet of the air cooling island (10) is connected to the heat regeneration system through a condensed water pump (7), and the air cooling island heat dissipation finned tube (4) is connected with the positive pressure anti-freezing device (2) through an air filtering device (5).
2. Anti-freeze device for air cooling system according to claim 1, characterised in that the air cooling island (10) is provided with an air cooling island fan (9) at its bottom.
3. The antifreeze apparatus for air cooling system according to claim 1, wherein the air cooling island (10) is provided with an air cooling island inlet valve (3) at the steam inlet.
4. Anti-freeze device for air cooling system according to claim 1, characterised in that the condensate pump (7) is provided with a condensate pump inlet door (8) and a condensate pump outlet door (6) at its inlet and outlet.
5. The antifreeze apparatus for air cooling system according to claim 1, wherein the positive pressure antifreeze apparatus (2) can be adjusted on line in real time according to the operation requirement of the air cooling island (10), and can be taken out of service at any time.
6. The anti-freezing device for the air cooling system is characterized in that the positive pressure anti-freezing device (2) is started under the low temperature working condition in winter when the air cooling island heat dissipation finned tubes (4) are in the risk of freezing blockage and frost cracking.
7. The anti-freezing device for the air cooling system is characterized in that due to the fact that negative pressure exists inside the air cooling island heat dissipation finned tubes (4), after the positive pressure anti-freezing device (2) is started, air enters the heat dissipation finned tubes with the possibility of freezing blockage and frost cracking through the positive pressure anti-freezing device (2) and the air filtering device (5) under the action of pressure difference, and the flow field of the water-steam mixture is disturbed.
8. The antifreeze apparatus for air-cooling system according to claim 1, wherein a plurality of air-cooling islands (10) are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121312232.2U CN215063820U (en) | 2021-06-11 | 2021-06-11 | Anti-freezing device suitable for air cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121312232.2U CN215063820U (en) | 2021-06-11 | 2021-06-11 | Anti-freezing device suitable for air cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215063820U true CN215063820U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121312232.2U Active CN215063820U (en) | 2021-06-11 | 2021-06-11 | Anti-freezing device suitable for air cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215063820U (en) |
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2021
- 2021-06-11 CN CN202121312232.2U patent/CN215063820U/en active Active
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