CN204572567U - A kind of antifreeze air cooling blower fan of air cooling turbo-generator - Google Patents
A kind of antifreeze air cooling blower fan of air cooling turbo-generator Download PDFInfo
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- CN204572567U CN204572567U CN201520285721.1U CN201520285721U CN204572567U CN 204572567 U CN204572567 U CN 204572567U CN 201520285721 U CN201520285721 U CN 201520285721U CN 204572567 U CN204572567 U CN 204572567U
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- air cooling
- air
- blower fan
- air duct
- intake grill
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Abstract
A kind of antifreeze air cooling blower fan of air cooling turbo-generator, it is axial fan, the antifreeze air cooling blower fan of air cooling turbo-generator has air duct, have impeller in air duct, impeller shaft is connected with by retarder, motor, the top of air duct is exhaust outlet, air inlet channel below air duct is intake grill, and intake grill has protective net, is provided with venetian blinds on the upside of the protective net in air inlet channel below air duct intake grill.When ambient temperature reduces further, so that the exhaust steam in the tube bank of " A " font radiating fin after work done and condensed water may frosting and icing time, when not starting air cooling blower fan, venetian blinds is closed, stop the cold wind of natural flow to enter air duct through the intake grill of air cooling blower fan, effectively prevent " A " font radiating fin restrain in exhaust steam after work done and condensed water is cooled further, frosting and freezing.
Description
Technical field
The utility model relates to the air cooling blower fan of air cooling condenser in a kind of air cooling turbo-generator, particularly the air cooling blower fan intake grill of air cooling condenser in a kind of air cooling turbo-generator.
Background technique
Steam Turbine in Fire Power Plant operationally, get off the exhaust steam condensation after work done, and condensed condensed water is used for returning boiler and recycles as boiler feed water, and condensed water normal circulation is the key factor that maintenance generator set normally runs.
Have air cooling turbo-generator in the thermal power plant in the area of lack of water, air cooling turbo-generator take environmental air as the exhaust steam after cooling medium air cooling condenser condensation work done.This type of cooling is in current large-size thermal power plant extensive use.Font radiating fin tube bank that air cooling condenser has " A ", the below of " A " font radiating fin tube bank is connected with air cooling blower fan, air cooling blower fan is axial fan, air cooling blower fan has air duct, have impeller in air duct, impeller shaft is connected with motor by retarder, and the top of air duct is exhaust outlet, air inlet channel below air duct is intake grill, and intake grill has the protective net preventing foreign material from entering air duct.
Air cooling condenser is arranged in outdoor overhead environment.During use, the tail vapour allowing steam turbine discharge passes into " A " font radiating fin tube bank of air cooling condenser, air cooling blower fan upwards blows over air cooling condenser the air in environment from " A " font radiating fin tube bank below, and the exhaust steam of flowing in finned-tube bundle is condensed into liquid water.
In the season of cold, outdoor environment temperature is lower, does not start air cooling blower fan, only enters the cold wind of the natural flow of air duct with the intake grill through air cooling blower fan, just the exhaust steam condensation in the tube bank of air cooling condenser " A " font radiating fin can be got off.If the temperature of environment reduces further, the cold wind being entered air duct natural flow by the intake grill of air cooling blower fan can be caused the exhaust steam in the tube bank of " A " font radiating fin and condensed water frosting and freeze, exhaust steam in the tube bank of air cooling condenser " A " font radiating fin and condensed water frosting are with icing, seriously affect or destroy the flowing of water of condensation normal circulation, not only affect unit normally to run, expensive air cooling condenser bursting by freezing also can be caused to damage.
In the exhaust steam amount that unit load change causes entering air cooling condenser very few or variation of ambient temperature scope greatly time, the exhaust steam state in the tube bank of air cooling condenser " A " font radiating fin is more big changes.When nighttime ambient temperature is too low or exhaust steam amount is very few, the cool air of above-mentioned natural flow also can cause the exhaust steam in cooling vapour condenser and condensed water frosting and freeze.
Above-mentioned cold season or nighttime ambient temperature is too low and exhaust steam amount is very few time, the method that needs minimizing natural flow blows over air cooling condenser cold wind avoid in air cooling condenser exhaust steam and condensed water frosting and freeze.
In prior art, the air cooling blower fan intake grill of air cooling condenser " A " font radiating fin tube bank below is unlimited, cold season or nighttime ambient temperature is too low and exhaust steam amount is very few time, this air cooling blower fan can not avoid the cold wind through the intake grill natural flow of air cooling blower fan cause " A " font radiating fin restrain in exhaust steam and condensed water frosting and freeze.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, propose a kind of can avoid the cold wind through the intake grill natural flow of air cooling blower fan cause " A " font radiating fin restrain in exhaust steam and condensed water frosting and the antifreeze air cooling blower fan of air cooling turbo-generator that freezes.
The utility model realizes with the following method.
The antifreeze air cooling blower fan of air cooling turbo-generator is axial fan, the antifreeze air cooling blower fan of air cooling turbo-generator has air duct, impeller is had in air duct, impeller shaft is connected with motor by retarder, the top of air duct is exhaust outlet, air inlet channel below air duct is intake grill, and intake grill has protective net, is provided with venetian blinds on the upside of the protective net in air inlet channel below air duct intake grill.
Venetian blinds can open and close.
Under the normal conditions that ambient temperature is not very low, venetian blinds is opened, start air cooling blower fan, the air in environment is upwards blown over the tube bank of " A " font radiating fin, the exhaust steam condensation after work done in the tube bank of " A " font radiating fin is got off.
Cold season or nighttime ambient temperature is too low and exhaust steam amount is very few time, when not starting air cooling blower fan, venetian blinds is opened, and the cold wind that the intake grill through air cooling blower fan enters the natural flow of air duct will make the exhaust steam in the tube bank of " A " font radiating fin be condensed into liquid water.
When ambient temperature reduces further, so that the exhaust steam in the tube bank of " A " font radiating fin after work done and condensed water may frosting and icing time, when not starting air cooling blower fan, venetian blinds is closed, stop the cold wind of natural flow to enter air duct through the intake grill of air cooling blower fan, effectively prevent " A " font radiating fin restrain in exhaust steam after work done and condensed water is cooled further, frosting and freezing.
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing explanation
Fig. 1 is the main cross-sectional schematic of the antifreeze air cooling blower fan in a kind of thermal power plant proposed according to scheme of the invention of the present utility model;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is the main cross-sectional schematic of venetian blinds;
Fig. 4 is the elevational schematic view of Fig. 3;
The elevational schematic view of Fig. 3 when Fig. 5 is venetian blinds unlatching.
Embodiment
In Fig. 1 ~ Fig. 5, the antifreeze air cooling blower fan of air cooling turbo-generator has axial fan 1, axial fan has air duct 2, have impeller 3 in air duct, impeller shaft is connected with motor 5 by retarder 4, and the top of air duct is exhaust outlet 6, air inlet channel below air duct is intake grill 7, intake grill has protective net 8, and intake grill has protective net, is provided with venetian blinds 9 on the upside of the protective net in air inlet channel below air duct intake grill.
Venetian blinds has the movable shutters curtain 11 be distributed in air inlet channel below air duct intake grill, and there is the sharf 12 be contained in air inlet channel below air duct intake grill the blade termination of movable shutters curtain, and air duct has the fork 13 vertical with blade, blade is hinged on fork respectively.
The utility model controls the opening and closing of venetian blinds in conjunction with controller and rod-swinging driving device.After having input temp transducing signal in controller, the program of output drive signal, rod-swinging driving device can be electromagnetic actuator device or drive motor.
The input end of controller is connected with temperature transducer, and the output terminal of controller is connected with rod-swinging driving device and axial fan, and rod-swinging driving device is connected with the fork of movable shutters curtain.
During installation, temperature transducer is arranged on the appropriate location of air cooling condenser.
During use, when ambient temperature is higher, controller exports the control signal of opening axial fan and venetian blinds, forces cooling-air cooling vapour condenser with axial fan; When the temperature of the surroundings is low, controller exports the control signal of closing axle flow type fan, enters the cold front heavy rain vapour condenser of the natural flow of air duct with the intake grill through air cooling blower fan; When ambient temperature reduces further, controller exports the control signal of closing venetian blinds, stop that the cold wind of environment natural flow enters air duct, avoid " A " font radiating fin restrain in exhaust steam after work done and condensed water is cooled further, frosting and freezing.
Claims (3)
1. the antifreeze air cooling blower fan of an air cooling turbo-generator, it is axial fan, the antifreeze air cooling blower fan of air cooling turbo-generator has air duct, have impeller in air duct, impeller shaft is connected with by retarder, motor, the top of air duct is exhaust outlet, air inlet channel below air duct is intake grill, and intake grill has protective net, it is characterized in that: be provided with venetian blinds on the upside of the protective net in air inlet channel below air duct intake grill.
2. by the antifreeze air cooling blower fan of air cooling turbo-generator according to claim 1, it is characterized in that: described venetian blinds has the movable shutters curtain be distributed in air inlet channel below air duct intake grill, there is the sharf be contained in air inlet channel below air duct intake grill the blade termination of movable shutters curtain, air duct has the fork vertical with blade, blade is hinged on fork respectively.
3. by the antifreeze air cooling blower fan of air cooling turbo-generator according to claim 1, it is characterized in that: described fork is connected with rod-swinging driving device, rod-swinging driving device is connected with controller, and rod-swinging driving device is connected in the output terminal of controller, and the input end of controller is connected with temperature transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285721.1U CN204572567U (en) | 2015-05-06 | 2015-05-06 | A kind of antifreeze air cooling blower fan of air cooling turbo-generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285721.1U CN204572567U (en) | 2015-05-06 | 2015-05-06 | A kind of antifreeze air cooling blower fan of air cooling turbo-generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204572567U true CN204572567U (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520285721.1U Active CN204572567U (en) | 2015-05-06 | 2015-05-06 | A kind of antifreeze air cooling blower fan of air cooling turbo-generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204572567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099629A (en) * | 2018-07-23 | 2018-12-28 | 青岛海尔股份有限公司 | A kind of evaporator defrosting device and its control method |
-
2015
- 2015-05-06 CN CN201520285721.1U patent/CN204572567U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099629A (en) * | 2018-07-23 | 2018-12-28 | 青岛海尔股份有限公司 | A kind of evaporator defrosting device and its control method |
| CN109099629B (en) * | 2018-07-23 | 2020-12-29 | 海尔智家股份有限公司 | Evaporator defrosting device and control method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |