CN202675929U - Cooling device for improving vacuum effect of condenser - Google Patents
Cooling device for improving vacuum effect of condenser Download PDFInfo
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- CN202675929U CN202675929U CN 201220340718 CN201220340718U CN202675929U CN 202675929 U CN202675929 U CN 202675929U CN 201220340718 CN201220340718 CN 201220340718 CN 201220340718 U CN201220340718 U CN 201220340718U CN 202675929 U CN202675929 U CN 202675929U
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- cooling device
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- condenser
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- housing
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Abstract
The utility model relates to a cooling device for improving a vacuum effect of a condenser. The cooling device (1) is provided with a shell body (15), a gas-steam inlet (8) is disposed at the lower end of one side of the shell body (15) and the upper end of the other side of the shell body (15) is connected with a water adding pipeline (14). An air outlet (9) is arranged on the top portion of the shell body (15), a water discharging tube mouth (10) is arranged at the bottom of the shell body (15) and a group of screw type heat exchange tubes (16) is arranged inside the shell body (15). The device enables steam of gas-steam compounds drawn out of the condenser to be condensed and drained out, and therefore condensation heat release of the steam inside a water-ring vacuum pump is reduced, working water temperature is reduced, cavitation of a vacuum pump is effectively avoided and pumping capability of the vacuum pump is improved.
Description
Technical field
The utility model relates to the condenser vacuum extractor of steam turbine, relates in particular to a kind of cooling device that improves the condenser vacuumizing effect.
Background technology
The vacuum of condenser has very important impact to economy and the security of Turbo-generator Set, and condenser vacuum descends, and the unit generation coal consumption is increased, and the exhaust casing temperature raises, and affects Turbine Safety stable operation.At present the vacuum of Turbo-generator Set condenser generally adopts jetting (or vapour) air ejector or water ring vacuum pump to reach from the condenser gas mixture that outwards draws gas.The steam-air mixture of extracting out from condenser generally speaking, steam accounts for 2/3, and air accounts for 1/3.Steam in the mixture has reduced water-jetting steam extractor or Water-ring vacuum pump performance on the one hand, and the existence meeting of water vapour obviously increases flow resistance and the vavuum pump suction capactity that mixes gas, affects condenser operation vacuum, remote-effects unit operation economy.And the condensation heat of steam in water-ring vacuum pump, make the working water temperature drop low, thereby make vavuum pump generation cavitation, affect the suction capactity of vavuum pump.
In existing thermal power plant's condensing-type unit, no matter it is to use stream-jet ejector, water jet air ejector or vavuum pump that the air hose of a connection is arranged that condenser vacuumizes, hot-air in equipment air hose in service arrives in the water jet air ejector, because of temperature and vacuum values when saturated, water jet air ejector low vacuum and jetting case water temperature are raise, particularly more outstanding in the performance in summer.Prior art generally is that the water-jet pump porch adds cooling water temperature, but its effect is still undesirable, also sometimes opens air ejector for subsequent use, but consumes too large.For suffer small set, because of without air ejector for subsequent use, so can cause unit efficiency low because vacuum is low.
For overcoming the deficiencies in the prior art, Chinese patent ZL200810040059.3 provides a kind of apparatus for cooling condenser air pipe, comprise condenser, it is characterized in that, be connected with the air hose cooling device at condenser, described air hose cooling device is provided with housing, and housing is provided with water inlet pipe mouth and effluent pipe mouth, is provided with some heat exchanger tubes in the housing; The air hose of condenser is connected on the housing; On water inlet pipe mouth and effluent pipe mouth, be connected with respectively inlet pipeline and outlet pipeline.Because the cooling effect of air hose cooling device, the air themperature that enters water jet air ejector is reduced, thereby make the vacuum of water jet air ejector realize along with the variation of service condition significantly improving, can improve water jet air ejector efficient, improve condenser vacuum, realize energy-conservation technique effect.
Although above-mentioned apparatus for cooling condenser air pipe has overcome the deficiencies in the prior art to a certain extent, improve water jet air ejector efficient, improved condenser vacuum, effect is unsatisfactory.
The utility model content
For solving the problems of the technologies described above, the utility model provides a kind of cooling device that improves the condenser vacuumizing effect, this cooling device is with the steam condensation from the gas vapour mixture that condenser is extracted out and dredge out, reduced the condensation heat of steam in water-ring vacuum pump, make the working water temperature drop low, effectively prevent the cavitation of vavuum pump, improved the suction capactity of vavuum pump.
The technical scheme that the utility model adopts is:
A kind of cooling device that improves the condenser vacuumizing effect, described cooling device is provided with housing, and the lower end of housing one side is provided with the gas vapor inlet, and the upper end of opposite side is connected with water pipe; The top of housing is provided with air outlet slit, and the bottom is provided with effluent pipe mouth, is provided with one group of spiral heat exchange tube in the housing.
Gas vapour mix ingredients 2/3 is water vapour approximately in the condenser vacuum-pumping pipeline, and the existence meeting of water vapour obviously increases flow resistance and the vavuum pump suction capactity that mixes gas, affect condenser and moves vacuum, remote-effects unit operation economy.Consider this factor, the utility model provides a kind of cooling device that improves the condenser vacuumizing effect, the gas vapour mixture of extracting out from the air hose of condenser enters cooling device by the gas vapor inlet, by the inner tank wall screw type rotary of spiral heat exchange tube at cooling device, with the water counter current contacting from water pipe, carry out heat exchange, make the steam condensation in the gas vapour mixture and dredge out, reduced the condensation heat of steam in water-ring vacuum pump, make the working water temperature drop low, effectively prevent the cavitation of vavuum pump, improved the suction capactity of vavuum pump.On the other hand, owing to steam condensation, in the situation that the difference of Condenser Extraction entrance pressure and suction chamber pressure is constant, will certainly increase the amount that deflates, thereby having improved the vacuum of condenser.
As a kind of preferred version of the present utility model: be provided with nozzle in the described housing, described nozzle is connected on the water pipe; Be connected with the bushing type water seal on the described effluent pipe mouth.
Chemical moisturizing is taken from the cooling water water source, in housing, install additional and spray into cooling device after nozzle atomizes cooling water, the gas vapour mixture next with the air hose of condenser carries out heat exchange, steam in the mist is condensed, then enter the bushing type water seal from effluent pipe mouth, be directed at condenser hotwell via pipeline, not only realized the cooling that mixes water vapour in the gas is condensed, can realize again the condenser water replenishing atomizing, reduce the heat exchange loss.Can improve after the project implementation about condenser operation vacuum values 0.5KPa, gross coal consumption rate reduces approximately 1.2g/KWh.
As more preferably scheme of the present utility model: be connected with pipeline delivery pump on the described water pipe.
Install pipeline delivery pump additional at water pipe, can adherence pressure, the control flow.
The utility model can further arrange the water deflection plate at described spiral heat exchange tube.
Described water pipe also is provided with valve.
The beneficial effects of the utility model are:
A kind of cooling device that improves the condenser vacuumizing effect provided by the utility model, steam condensation in the gas vapour mixture that will extract out from condenser is also dredged out, reduced the condensation heat of steam in water-ring vacuum pump, make the working water temperature drop low, effectively prevent the cavitation of vavuum pump, improved the suction capactity of vavuum pump.On the other hand, owing to steam condensation, in the situation that the difference of exhaust entrance pressure and suction chamber pressure is constant, will certainly increase the amount that deflates, thereby having improved the vacuum of condenser.And adopt a part of chemistry filled water to carry out heat exchange through atomizing and the gas vapour mixture that condenser comes within it, and make the water recovery in the mist, and dredge out through the telescopic water seal of cooling device bottom with atomized water, enter condenser hotwell.Adopt spiral heat exchange tube, make mist along cooling device inner tank wall screw type rotary and with the atomized water counter current contacting, the exhaust pipeline that remaining air flows out through the downstream from the cooling device top in the mist enters vavuum pump.
Description of drawings
Below in conjunction with accompanying drawing a kind of cooling device that improves the condenser vacuumizing effect of the present utility model is specifically described:
Fig. 1 is a kind of schematic diagram that improves the cooling device of condenser vacuumizing effect of embodiment one;
Fig. 2 is a kind of structural representation that improves the cooling device of condenser vacuumizing effect of embodiment one.
Wherein:
1---cooling device, 3---the bushing type water seal, 5---pipeline delivery pump, 7---nozzle, 8---the gas vapor inlet, 9---air outlet slit; 10---effluent pipe mouth, 14---water pipe, 15---housing, 16---spiral heat exchange tube, 17---the water deflection plate, 18---valve.
The specific embodiment
Embodiment one
Below in conjunction with accompanying drawing a kind of cooling device that improves the condenser vacuumizing effect described in the utility model is described in detail, this cooling device 1 is provided with housing 15, the lower end of housing 15 1 sides is provided with gas vapor inlet 8, and the upper end of opposite side is connected with water pipe 14; The top of housing 15 is provided with air outlet slit 9, and the bottom is provided with effluent pipe mouth 10, is provided with one group of spiral heat exchange tube 16 in the housing 15.Referring to Fig. 1 and Fig. 2.
Gas vapour mix ingredients 2/3 is water vapour approximately in the condenser vacuum-pumping pipeline, and the existence meeting of water vapour obviously increases flow resistance and the vavuum pump suction capactity that mixes gas, affect condenser and moves vacuum, remote-effects unit operation economy.Consider this factor, the present embodiment provides a kind of cooling device that improves the condenser vacuumizing effect, to enter this cooling device 1 by gas vapor inlet 8 from the gas vapour mixture of the extraction of condenser, by the inner tank wall screw type rotary of spiral heat exchange tube 16 at cooling device 1, with the water counter current contacting from water pipe 14, carry out heat exchange, make the steam condensation in the gas vapour mixture and dredge out, reduced the condensation heat of steam in water-ring vacuum pump, make the working water temperature drop low, effectively prevent the cavitation of vavuum pump, improved the suction capactity of vavuum pump.On the other hand, owing to steam condensation, in the situation that the difference of exhaust entrance pressure and suction chamber pressure is constant, will certainly increase the amount that deflates, thereby having improved the vacuum of condenser.Remaining air then enters vavuum pump from the air outlet slit 9 at housing 15 tops of cooling device 1 through pipeline in the gas vapour mixture.
Embodiment two
The present embodiment is the improvement to embodiment one, is provided with nozzle 7 in the described housing 15, and described nozzle 7 is connected on the water pipe 14; Be connected with bushing type water seal 3 on the described effluent pipe mouth 10.
Chemical moisturizing is taken from the cooling water water source, in housing 15, install additional and spray into cooling device 1 after nozzle atomizes cooling water, the gas vapour mixture that comes with condenser carries out heat exchange, steam in the mist is condensed, then enter bushing type water seal 3 from effluent pipe mouth 10, be directed at condenser hotwell via pipeline, not only realized the cooling that mixes water vapour in the gas is condensed, can realize again the condenser water replenishing atomizing, reduce the heat exchange loss.Can improve after the project implementation about condenser operation vacuum values 0.5KPa, gross coal consumption rate reduces approximately 1.2g/KWh.
Other technical characterictic is identical with embodiment one in the present embodiment.
Embodiment three
The present embodiment is the further improvement to embodiment two, is connected with pipeline delivery pump 5 on the described water pipe 14.
Install pipeline delivery pump 5 additional at water pipe 14, can adherence pressure, the control flow.
Other technical characterictic is identical with embodiment one in the present embodiment.
Embodiment four
The present embodiment is at embodiment one or embodiment two or implement further to be provided with water deflection plate 17 at described spiral heat exchange tube 16 on three the basis.
Claims (5)
1. a cooling device that improves the condenser vacuumizing effect is characterized in that, described cooling device (1) is provided with housing (15), and the lower end of housing (15) one sides is provided with gas vapor inlet (8), and the upper end of opposite side is connected with water pipe (14); The top of housing (15) is provided with air outlet slit (9), and the bottom is provided with effluent pipe mouth (10), is provided with one group of spiral heat exchange tube (16) in the housing (15).
2. cooling device according to claim 1 is characterized in that, is provided with nozzle (7) in the described housing (15), and described nozzle (7) is connected on the water pipe (14); Be connected with bushing type water seal (3) on the described effluent pipe mouth (10).
3. cooling device according to claim 1 and 2 is characterized in that, is connected with pipeline delivery pump (5) on the described water pipe (14).
4. cooling device according to claim 1 and 2 is characterized in that, is provided with water deflection plate (17) at described spiral heat exchange tube (16).
5. cooling device according to claim 1 and 2 is characterized in that, described water pipe (14) also is provided with valve (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220340718 CN202675929U (en) | 2012-07-13 | 2012-07-13 | Cooling device for improving vacuum effect of condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220340718 CN202675929U (en) | 2012-07-13 | 2012-07-13 | Cooling device for improving vacuum effect of condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202675929U true CN202675929U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220340718 Expired - Lifetime CN202675929U (en) | 2012-07-13 | 2012-07-13 | Cooling device for improving vacuum effect of condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202675929U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043127A (en) * | 2015-07-22 | 2015-11-11 | 佛山市真空泵厂有限公司 | Condensation device and vacuum condensation system with same |
| CN105300126A (en) * | 2015-11-25 | 2016-02-03 | 谢祚祥 | System for increasing vacuum degree of condenser |
| CN107062932A (en) * | 2017-03-30 | 2017-08-18 | 中国神华能源股份有限公司 | Steam cools down retracting device |
-
2012
- 2012-07-13 CN CN 201220340718 patent/CN202675929U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043127A (en) * | 2015-07-22 | 2015-11-11 | 佛山市真空泵厂有限公司 | Condensation device and vacuum condensation system with same |
| CN105043127B (en) * | 2015-07-22 | 2017-10-03 | 佛山市真空泵厂有限公司 | A kind of condensing unit and the vacuum condensing system with the condensing unit |
| CN105300126A (en) * | 2015-11-25 | 2016-02-03 | 谢祚祥 | System for increasing vacuum degree of condenser |
| CN107062932A (en) * | 2017-03-30 | 2017-08-18 | 中国神华能源股份有限公司 | Steam cools down retracting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |