CN202485478U - Direct air-cooling condensing system with peak cooler - Google Patents
Direct air-cooling condensing system with peak cooler Download PDFInfo
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- CN202485478U CN202485478U CN201220084700XU CN201220084700U CN202485478U CN 202485478 U CN202485478 U CN 202485478U CN 201220084700X U CN201220084700X U CN 201220084700XU CN 201220084700 U CN201220084700 U CN 201220084700U CN 202485478 U CN202485478 U CN 202485478U
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- cooler
- air
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- cooling
- steam
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Abstract
The utility model relates to a direct air-cooling condensing system with a peak cooler. The direct air-cooling condensing system comprises an exhaust pipeline (4), an air-cooling condenser (2) and a peak cooler (3), wherein the air-cooling condenser (2) comprises a steam distribution pipe (2-1), a steamer tube bundle (2-2) and an air-cooling fan unit (2-3); the peak cooler (3) comprises a circulation water pipeline (3-2), a circulation water nozzle (3-3), a cooler tube bundle (3-4), a vacuumizing pipeline (3-5) and a cooler fan unit (3-1); the peak cooler is arranged in parallel to the air-cooling condenser; the vacuumizing pipeline is arranged at the end part of the cooler tube bundle and the rear end of a waste steam channel so as to exhaust the non-condensable gas (A) in the waste steam; and the circulation cooling water is sprayed at the outer surface of the cooler tube bundle (3-4). When the environment temperature is high, the peak cooler (3) and the air-cooling condenser (2) are operated synchronously; when the environment temperature is low, only the air-cooling condenser (2) is operated. The direct air-cooling condensing system has the advantages that, a low exhaust steam backpressure of a turbine (1) can be kept in hot summer; the consumption of the fuel coal can be reduced; and the power of the turbine (1) can be ensured.
Description
Technical field
The utility model relates to a kind of Direct Air-Cooled condensing system with the spike cooler, is mainly used in the condensation process of the exhaust steam in steam turbine of thermal power plant and chemical enterprise.
Background technology
At thermal power plant and chemical enterprise, used the Direct Air-Cooled condensing system more and more.Though Direct Air-Cooled condensing system water-saving result is remarkable, but there are many problems.At first, receive the influence of ambient air temperature, higher in the adiabatic condensation temperature and the steam discharge back pressure in summer high temperature season, cause the hear rate of steam turbine to increase, efficient reduces, and also do not reach specified exerting oneself sometimes.Secondly; Air cooling tubes condenser is after the operation several years; Since increase the weight of day by day dirty of heat exchange outer surface and and aging phenomenon, further influenced Direct Air-Cooled condensing system heat exchange property, cause the performance driving economy of steam turbine to glide; It is serious that steam turbine does not reach the situation of exerting oneself, and the performance of enterprises also can receive very big influence.
For addressing the above problem, two kinds of technical schemes of in the Direct Air-Cooled condensing system, setting up peak cooling device are arranged at present.
A kind of is the device of below bank of condenser pipes, setting up mist cooling, utilizes the mode of humidifying cooling to reduce the air themperature that the air cooling tubes condenser tube bank enters the mouth, and back pressure is decreased.In order to prevent the fin surface fouling of spray water evaporation back at air cooling tubes condenser, spray water must be used demineralized water, and not only operating cost is higher, and the amplitude that turbine back pressure reduces is little.
Another kind of scheme is and the parallel traditional water-cooling system of a cover of setting up of Direct Air-Cooled condensing system, and water-cooling system comprises water-cooled condenser, the circulating water cooling tower of unifying.The operation principle of the water-cooling system of setting up: the part exhaust steam that steam turbine is discharged gets into water-cooled condenser, outside the water-cooled condenser pipe, condenses; Recirculated water flows in the pipe of water-cooled condenser and takes away heat with the mode of conducting heat; Recirculated water after the intensification gets into cooling tower after going out water-cooled condenser again, evaporative cooling on filler.Because the cost of water-cooled condenser and the influence of heat exchange difference, the investment of this scheme is big, and big because of circulating water flow, pump power is big, the operating cost of system is also high.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of above-mentioned Direct Air-Cooled condensing system and spike cooling scheme, provides a kind of operating cost lower, and the amplitude that turbine back pressure reduces is bigger, and invests the Direct Air-Cooled condensing system of little band spike cooler.
The purpose of the utility model is achieved in that a kind of Direct Air-Cooled condensing system with the spike cooler; Comprise blow-off line and air cooling tubes condenser; Air cooling tubes condenser comprises steam-distributing pipe, bank of condenser pipes and air cooling blower fan group, is characterized in: said system has additional the spike cooler, and the spike cooler comprises circulating water pipeline, recirculated water nozzle, cooler bundle, vacuum lead and cooler blower fan group; The parallelly connected setting of spike cooler with air cooling tubes condenser; Directly import the part exhaust steam of steam turbine discharge in the cooler bundle of described spike cooler through connecting pipeline, exhaust steam is at the in-tube condensation of cooler bundle, and the recirculated water nozzle of described spike cooler is at the tube outer surface spray recirculated cooling water of cooler bundle; Through mass transfer and the heat transfer effect of recirculated cooling water outside the cooler tube beam tube; Take away the heat in the exhaust steam condensation process, vacuum lead is set, to discharge the incoagulable gas in the exhaust steam at the end of the end of cooler bundle exhaust steam passage.
The Direct Air-Cooled condensing system of the utility model band spike cooler, the exhaust steam parallel interface of said spike cooler are positioned on the blow-off line or on the steam-distributing pipe of air cooling tubes condenser.
The method of operation of the utility model is such:
(1) in summer high temperature season; Open the valve that exhaust steam flows to the spike cooler; Spike cooler and air cooling tubes condenser are moved jointly; Share the thermic load in the condensation process of part exhaust steam by the spike cooler, turbine back pressure can not increased because of environment temperature raises significantly, and guarantee that steam turbine reaches specified exerting oneself all the time.
(2) when environment temperature is low, close the valve that exhaust steam flows to the spike cooler, the spike cooler is stopped transport, only bear thermic load, realize the purpose of air cooling condensing system water saving by air cooling tubes condenser.
The beneficial effect of the utility model is:
In summer high temperature season, can keep the steam discharge back pressure of lower steam turbine, can reduce coal-fired the exerting oneself of steam turbine that consume and guarantee.And operating cost is lower, invests little.
Description of drawings
Fig. 1 is for implementing embodiment 1 sketch map of the utility model.
Fig. 2 is for implementing embodiment 2 sketch mapes of the utility model.
Among the figure:
Air cooling tubes condenser 2
Steam-distributing pipe 2-1
Bank of condenser pipes 2-2
Air cooling blower fan group 2-3
Spike cooler 3
Cooler blower fan group 3-1
Circulating water pipeline 3-2
Recirculated water nozzle 3-3
Cooler bundle 3-4
Vacuum lead 3-5
Incoagulable gas A in the exhaust steam
Condensate B.
The specific embodiment
Embodiment 1:
Referring to Fig. 1, Fig. 1 is for implementing embodiment 1 sketch map of the utility model.Can find out that by Fig. 1 the Direct Air-Cooled condensing system of the utility model band spike cooler is made up of blow-off line 4, air cooling tubes condenser 2 and spike cooler 3.Air cooling tubes condenser 2 comprises steam-distributing pipe 2-1, bank of condenser pipes 2-2 and air cooling blower fan group 2-3.Spike cooler 3 comprises circulating water pipeline 3-2, recirculated water nozzle 3-3, cooler bundle 3-4, vacuum lead 3-5 and cooler blower fan group 3-1.Spike cooler 3 and air cooling tubes condenser 2 parallelly connected settings directly import the part exhaust steam of steam turbine discharge in the cooler bundle 3-4 of described spike cooler 3 through connecting pipeline, and part exhaust steam interface position is positioned on the blow-off line 4.End at the end of cooler bundle 3-4 exhaust steam passage is provided with vacuum lead 3-5.When ambient air temperature is higher; Only air cooling tubes condenser 2 operations can not keep under the situation of turbine back pressure value; Spike cooler 3 puts into operation, and switches through valve, and the part exhaust steam gets into spike cooler 3; At the in-tube condensation of cooler bundle 3-4, the incoagulable gas A in the last remaining exhaust steam is discharged by vacuum lead 3-5; Spike cooler 3 is provided with circulating water pipeline 3-2, water is sprayed on outside the pipe of cooler bundle 3-4 through recirculated water nozzle 3-3, and recirculated cooling water is taken away through the effect of mass transfer and the heat transfer heat that will condense outside pipe; Cooler blower fan group 3-1 adopts the air draught type method to make air in spike cooler 3, form convection current, discharges the steam of evaporation and hot-air.When environment temperature is low, spike cooler 3 will be stopped transport.
Embodiment 2:
Referring to Fig. 2, Fig. 2 is for implementing embodiment 2 sketch mapes of the utility model.Can find out that by Fig. 2 the Direct Air-Cooled condensing system of the utility model band spike cooler is made up of blow-off line 4, air cooling tubes condenser 2 and spike cooler 3.Air cooling tubes condenser 2 and the 3 parallelly connected settings of spike cooler.Different with embodiment 1 is, the exhaust steam interface position of spike cooler 3 on the steam-distributing pipe 2-1 of air cooling tubes condenser 2, both can the inlet of steam-distributing pipe 2-1, also can be in the middle.Other part of embodiment 2 is identical with embodiment 1.
Claims (2)
1. Direct Air-Cooled condensing system with the spike cooler; Comprise blow-off line (4) and air cooling tubes condenser (2); Air cooling tubes condenser (2) comprises steam-distributing pipe (2-1), bank of condenser pipes (2-2) and air cooling blower fan group (2-3); It is characterized in that said system has additional spike cooler (3); Spike cooler (3) comprises circulating water pipeline (3-2), recirculated water nozzle (3-3), cooler bundle (3-4), vacuum lead (3-5) and cooler blower fan group (3-1); Spike cooler (3) and the parallelly connected setting of air cooling tubes condenser (2); Directly import the part exhaust steam of steam turbine (1) discharge in the cooler bundle (3-4) of described spike cooler (3) through connecting pipeline; Exhaust steam is at the in-tube condensation of cooler bundle (3-4), and the recirculated water nozzle (3-3) of described spike cooler (3) is at the tube outer surface spray recirculated cooling water of cooler bundle (3-4), at the end of the end exhaust steam passage of cooler bundle (3-4) vacuum lead (3-5) is set.
2. a kind of Direct Air-Cooled condensing system with the spike cooler according to claim 1 is characterized in that: the exhaust steam parallel interface of said spike cooler (3) is positioned on the blow-off line (4) or on the steam-distributing pipe (2-1) of air cooling tubes condenser (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220084700XU CN202485478U (en) | 2012-03-08 | 2012-03-08 | Direct air-cooling condensing system with peak cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220084700XU CN202485478U (en) | 2012-03-08 | 2012-03-08 | Direct air-cooling condensing system with peak cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485478U true CN202485478U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220084700XU Expired - Fee Related CN202485478U (en) | 2012-03-08 | 2012-03-08 | Direct air-cooling condensing system with peak cooler |
Country Status (1)
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| CN (1) | CN202485478U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607291A (en) * | 2012-03-08 | 2012-07-25 | 双良节能系统股份有限公司 | Direct air-cooling and condensing system with peak cooler |
| CN104533650A (en) * | 2014-12-29 | 2015-04-22 | 东方电气集团东方汽轮机有限公司 | Water spry cooling method and system of low-pressure exhaust hood of air-cooling steam turbine |
| CN106091717A (en) * | 2016-07-27 | 2016-11-09 | 双良节能系统股份有限公司 | Direct air cooling system with peak cooling device |
| CN110207503A (en) * | 2019-06-28 | 2019-09-06 | 国电龙源节能技术有限公司上海分公司 | Coal mine drainage water utilization system and power plant's air cooling system |
-
2012
- 2012-03-08 CN CN201220084700XU patent/CN202485478U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607291A (en) * | 2012-03-08 | 2012-07-25 | 双良节能系统股份有限公司 | Direct air-cooling and condensing system with peak cooler |
| CN104533650A (en) * | 2014-12-29 | 2015-04-22 | 东方电气集团东方汽轮机有限公司 | Water spry cooling method and system of low-pressure exhaust hood of air-cooling steam turbine |
| CN104533650B (en) * | 2014-12-29 | 2017-02-22 | 东方电气集团东方汽轮机有限公司 | Water spry cooling method and system of low-pressure exhaust hood of air-cooling steam turbine |
| CN106091717A (en) * | 2016-07-27 | 2016-11-09 | 双良节能系统股份有限公司 | Direct air cooling system with peak cooling device |
| CN110207503A (en) * | 2019-06-28 | 2019-09-06 | 国电龙源节能技术有限公司上海分公司 | Coal mine drainage water utilization system and power plant's air cooling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20200308 |
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| CF01 | Termination of patent right due to non-payment of annual fee |