CN201401197Y - Novel steam condensing system for heating heat-supply hot water by dead steam heat of steam turbine - Google Patents

Novel steam condensing system for heating heat-supply hot water by dead steam heat of steam turbine Download PDF

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Publication number
CN201401197Y
CN201401197Y CN2009200453237U CN200920045323U CN201401197Y CN 201401197 Y CN201401197 Y CN 201401197Y CN 2009200453237 U CN2009200453237 U CN 2009200453237U CN 200920045323 U CN200920045323 U CN 200920045323U CN 201401197 Y CN201401197 Y CN 201401197Y
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China
Prior art keywords
water
air cooling
heat exchanger
vapor
steam
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Expired - Fee Related
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CN2009200453237U
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Chinese (zh)
Inventor
薛海君
江瀚
张健
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Shuangliang Eco Energy Systems Co Ltd
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Jiangsu Shuangliang Air Conditioning Equipment Co Ltd
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Abstract

The utility model relates to a novel steam condensing system for heating heat-supply hot water by the dead steam heat of a steam turbine. The steam condensing system comprises an electric generator (1), a steam turbine (2) and a direct air cooling system, wherein the direct air cooling system comprises an air cooling blow-off pipe (3), an upper valve (4) of the air cooling blow-off pipe, an air cooling steam condenser (5), an air cooling fan (6), an air cooling condensed water pipe (7), an upper valve (8) of the air cooling condensed water pipe, an air cooling evacuation pipe (9), an evacuation device (10) and a condensed water collecting device (16); a path of gas-water heat exchanger system is connected on the air cooling blow-off pipe (3) of the direct air cooling system in parallel; the gas-water heat exchanger system comprises a gas-water heat exchanger (11), a condensed water pipe (12) of the gas-water heat exchanger, an upper valve (13) of the condensed water pipe of the gas-water heat exchanger, a gas inlet pipe (14) of the gas-water heat exchanger, an upper valve (15) of the gas inlet pipe of the gas-water heat exchanger and an evacuation pipe (17) of the gas-water heat exchanger. With the adoption of the novel steam condensing system, the energy wastage caused by discharging the dead steam heat to the atmosphere directly by heat exchange is directly reduced, the energy use ratio is increased, and the atmosphere thermal pollution is reduced.

Description

The novel condensing system that utilizes the exhaust steam in steam turbine heat to heat heat supply hot water
(1) technical field
The utility model relates to a kind of and the supporting condensing system of steam turbine, is applicable to heat power station condensation exhaust steam in steam turbine and the process of utilizing exhaust steam heat energy.
(2) background technique
Energy crisis has produced tremendous influence to our production, life.The present energy resource structure of China is still based on coal, and coal-fired thermal power plant build " three Norths " area of rich coal lack of water in more.These areas not only lack the water resources that people depend on for existence, and winter time very long temperature cold, the heat supply heating phases in most areas reach 5-6 month.The power station air cooling technology is because its water saving characteristics enjoy favor, and very fast in China's development in recent years, particularly Direct Air-Cooling Technology has obtained extensive use.
Direct air cooling system is made up of heat exchanger pipe bundle, blower fan group, steel platform, windbreak, steam line, condensing water conduit, vacuum lead, water ring vaccum pump (or stream-jet ejector) and electric control system.Direct air cooling system is carried out air blast by the tube bank of blower fan heat exchanging and is produced forced-convection heat transfer, and the exhaust steam that steam turbine is discharged is condensed into water in heat exchanger pipe bundle, and keeps the back pressure value of steam turbine to move within the limits prescribed.The application of Direct Air-Cooling Technology, having changed former clammy unit need utilize water to cool off the situation of exhaust steam in steam turbine, significantly reduced power plant's generating water consumption, alleviated the contradiction of striving water, played important function for keeping the local economy sustainable development with local industrial or agricultural, life.
But also there is its deficiency in direct air cooling system, in this system, the exhaust steam that steam turbine is discharged is all by being condensed into water with the air heat exchange, a large amount of heat (account for exhaust steam total heat energy 90%) all directly enters atmosphere by air and does not obtain utilizing, and near the required heat supply of the resident's winter heating the northern area thermal power plant need consume a large amount of energy (coal) again toward contact.If the heat supply heating of resident living can be saved the energy many so that consumed every year near the steam latent heat in the steam turbine discharge exhaust steam of thermal power plant can being used for.
(3) summary of the invention
The purpose of this utility model is to address the above problem, and provides a kind of exhaust steam in steam turbine heat that can novelly utilize to heat the condensing system of heat supply hot water.
The purpose of this utility model is achieved in that a kind of novel condensing system that utilizes the exhaust steam in steam turbine heat to heat heat supply hot water, comprise generator, steam turbine, direct air cooling system, described direct air cooling system comprises the air cooling blow-off line, valve on the air cooling blow-off line, air cooling condenser, air cooling blower fan, the air cooling condensing water conduit, valve on the air cooling condensing water conduit, the air cooling vacuum lead, vaccum-pumping equipment and water of condensation gathering-device, it is characterized in that one road vapor-water heat exchanger system that on the air cooling blow-off line of described direct air cooling system, has been arranged in parallel, described vapor-water heat exchanger system comprises vapor-water heat exchanger, the vapor-water heat exchanger condensing water conduit, valve on the vapor-water heat exchanger condensing water conduit, vapor-water heat exchanger admission pipeline, valve and vapor-water heat exchanger vacuum lead on the vapor-water heat exchanger admission pipeline, described vapor-water heat exchanger vacuum lead inserts described vaccum-pumping equipment, and the vapor-water heat exchanger condensing water conduit inserts described water of condensation gathering-device.
The utility model is by the cover vapor-water heat exchanger system that increases in parallel again on the blow-off line of former direct air cooling system, utilize the characteristics that Direct Air-cooled Unit steam discharge back pressure can higher operation, form a kind of exhaust steam in steam turbine heat that can novelly utilize and heat the condensing system of heat supply hot water.
Compare with conventional art, the utility model technology has the following advantages:
1, improved rate of energy
The exhaust steam in steam turbine heat by the vapour condenser heat hot water, had both been reduced directly that the exhaust steam heat was directly entered the energy waste of atmosphere by heat exchange by air, also provide heat demand simultaneously, energy utilization rate is greatly enhanced.Is that the 110t/h unit is an example with a heat supply for condition exhaust steam in steam turbine displacement,
Its exhaust steam energy can realize the 2760m3/h flow following 50 ℃ advance, the ability of heat supply hot water that 70 ℃ go out, can satisfy the heat demand of 58000KW, benefit is more considerable.
2, environmental protection
Conventional art, the exhaust steam in steam turbine energy directly enters atmosphere by heat exchange by air, has caused thermo-pollution to atmosphere, utilizes the utility model technology then can significantly reduce pollution.
To sum up, utilize exhaust steam in steam turbine heat heat hot water by vapor-water heat exchanger, heat demand is provided, both reduced the energy waste that directly the exhaust steam energy is directly entered atmosphere by heat exchange by air, improved energy utilization rate, also reduce the atmospheric heat pollution, met national energy-conserving and environment-protective sustainable development requirement.
(4) description of drawings
Fig. 1 is novel condensing system scheme one schematic representation that utilizes the exhaust steam in steam turbine heat to heat heat supply hot water of the utility model.
Fig. 2 is novel condensing system scheme two schematic representation that utilize the exhaust steam in steam turbine heat to heat heat supply hot water of the utility model.
Fig. 3 is novel condensing system scheme three schematic representation that utilize the exhaust steam in steam turbine heat to heat heat supply hot water of the utility model.
Fig. 4 is novel condensing system scheme four schematic representation that utilize the exhaust steam in steam turbine heat to heat heat supply hot water of the utility model.
Reference character among the figure:
Generator 1
Steam turbine 2
Air cooling blow-off line 3
Valve 4 on the air cooling blow-off line
Air cooling condenser 5
Air cooling blower fan 6
Air cooling condensing water conduit 7
Valve 8 on the air cooling condensing water conduit
Air cooling vacuum lead 9
Vaccum-pumping equipment 10
Vapor-water heat exchanger 11
Vapor-water heat exchanger condensing water conduit 12
Valve 13 on the vapor-water heat exchanger condensing water conduit
Vapor-water heat exchanger admission pipeline 14
Valve 15 on the vapor-water heat exchanger admission pipeline
Water of condensation gathering-device (steam exhaust device, condensate water tank) 16
Vapor-water heat exchanger vacuum lead 17
Peripheral system 18
Heat supply hot water advances/goes out 19.
(5) embodiment
Scheme one is to scheme three system flow basically identicals: comprise the condenser system that two-way is relatively independent, wherein one the tunnel is former direct air cooling system, mainly is made up of valve 8, air cooling vacuum lead 9, vaccum-pumping equipment 10 and water of condensation gathering-device (steam exhaust device, condensate water tank) 16 on valve 4, air cooling condenser 5, air cooling blower fan 6, air cooling condensing water conduit 7, the air cooling condensing water conduit on generator 1, steam turbine 2, air cooling blow-off line 3, the air cooling blow-off line.Another road is to go up vapor-water heat exchanger system in parallel at former direct air cooling system exhaust line 3 (or water of condensation gathering-device 16 of steam turbine below), mainly is made up of valve 15, water of condensation gathering-device (steam exhaust device, condensate water tank) 16, vapor-water heat exchanger vacuum lead 17 and vaccum-pumping equipment 10 on valve 13, vapor-water heat exchanger admission pipeline 14, the vapor-water heat exchanger admission pipeline on vapor-water heat exchanger 11, vapor-water heat exchanger condensing water conduit 12, the vapor-water heat exchanger condensing water conduit.In this condenser system, steam turbine 2 is discharged exhaust steam and can directly be sent in the air cooling condenser 5 by air cooling blow-off line 3, the air cooling blower fan 6 of air cooling condenser 5 bottoms makes cool air from bottom to top flow through air cooling condenser 5 outer surfaces, make air and steam turbine 2 steam discharges carry out heat exchange, exhaust steam is condensed into water, water of condensation flows to water of condensation gathering-device (steam exhaust device, condensate water tank) 16 by air cooling condensing water conduit 7, sends peripheral system 18 again back to.Steam turbine 2 is discharged exhaust steam and also can be sent in the vapor-water heat exchanger 11 by vapor-water heat exchanger admission pipeline 14, carries out heat exchange with hot water, and exhaust steam is condensed into water.Wherein water of condensation flows to water of condensation gathering-device (steam exhaust device, condensate water tank) 16 by vapor-water heat exchanger condensing water conduit 12, sends peripheral system 18 again back to, and the hot water after being heated is delivered to heating system and is used for user's heating.Vaccum-pumping equipment 10 is used to extract the incoagulable gas in air cooling condenser 5 and the vapor-water heat exchanger 11, keeps the degree of vacuum of system and guarantees the equipment heat exchange efficiency.
When unit carries out the operation of heat supply operating mode, under system vacuum meets the requirements of situation, at first valve 8 on valve 4 on the air cooling blow-off line and the air cooling condensing water conduit is closed, valve 13 on valve 15 and the vapor-water heat exchanger condensing water conduit on the vapor-water heat exchanger admission pipeline is opened, promptly at first steam turbine 2 steam discharges are sent into heat hot water in the vapor-water heat exchanger 11.
Change at heating demand, and when steam turbine 2 remains displacements greater than air cooling condenser 5 antifreeze loads (by the decision of air cooling condenser heat-exchange performance), open on the air cooling blow-off line valve 8 on the valve 4 and air cooling condensing water conduit as required, start air cooling blower fan 6 simultaneously, opening the quantity of valve and quantity, the rotating speed of startup air cooling blower fan is determined by service condition, its objective is that the pressure of keeping system is in claimed range when the heat exchange load of vapor-water heat exchanger changes according to heat demand.
Change at heating demand, and when steam turbine residue displacement does not satisfy the antifreeze load of air cooling condenser (by the decision of air cooling condenser heat-exchange performance), close on the air cooling blow-off line valve 8 on the valve 4 and air cooling condensing water conduit, close air cooling blower fan 6 simultaneously, regulate the displacement of steam turbine 2 as required, its objective is that the pressure of keeping system is in claimed range when the heat exchange load of vapor-water heat exchanger changes according to heat demand.
When unit carries out the operation of non-heating operating mode, on the vapor-water heat exchanger condensing water conduit on valve 13 and the vapor-water heat exchanger admission pipeline valve 15 close, vapor-water heat exchanger 11 drops into maintenance, and all steam discharges of steam turbine are sent into condensation in the air cooling condenser 5.
Wherein, scheme two is with the difference of scheme one: in scheme two, water of condensation gathering-device 16 is arranged on steam turbine 2 belows, be called in the industry to be commonly called as and be steam exhaust device, turbine discharge enters blow-off line by water of condensation gathering-device 16 earlier and enters vapour condenser 5 condensations again, water of condensation relends and helps flow by gravity to arrange into water of condensation gathering-device 16, as Fig. 2.In scheme two, air cooling blow-off line 3 all is connected on the water of condensation gathering-device 16 with vapor-water heat exchanger admission pipeline 14.
Scheme three is with the difference of scheme two: in scheme three, air cooling blow-off line 3 directly is communicated with vapor-water heat exchanger admission pipeline 14, as Fig. 3.
Scheme four: consider public vaccum-pumping equipment 10 and water of condensation gathering-device in vapor-water heat exchanger system, the direct air cooling system among Fig. 1 (scheme one) were arranged in 16 minutes, promptly two systems are equipped with vaccum-pumping equipment 10 and water of condensation gathering-device 16 respectively separately, as Fig. 4.This is arranged as from patent right covering aspect considers, not necessarily can use in the actual engineering.

Claims (4)

1, a kind of novel condensing system that utilizes the exhaust steam in steam turbine heat to heat heat supply hot water, comprise generator (1), steam turbine (2) and direct air cooling system, described direct air cooling system comprises air cooling blow-off line (3), valve on the air cooling blow-off line (4), air cooling condenser (5), air cooling blower fan (6), air cooling condensing water conduit (7), valve on the air cooling condensing water conduit (8), air cooling vacuum lead (9), vaccum-pumping equipment (10) and water of condensation gathering-device (16), it is characterized in that on the air cooling blow-off line (3) of described direct air cooling system or water of condensation gathering-device (16), being arranged in parallel one road vapor-water heat exchanger system, described vapor-water heat exchanger system comprises vapor-water heat exchanger (11), vapor-water heat exchanger condensing water conduit (12), valve on the vapor-water heat exchanger condensing water conduit (13), vapor-water heat exchanger admission pipeline (14), valve (15) and vapor-water heat exchanger vacuum lead (17) on the vapor-water heat exchanger admission pipeline, described vapor-water heat exchanger vacuum lead (17) inserts described vaccum-pumping equipment (10), and vapor-water heat exchanger condensing water conduit (12) inserts described water of condensation gathering-device (16).
2, a kind of novel condensing system that utilizes the exhaust steam in steam turbine heat to heat heat supply hot water according to claim 1, it is characterized in that: described vapor-water heat exchanger admission pipeline (14) directly is connected on the air cooling blow-off line (3).
3, a kind of novel condensing system that utilizes the exhaust steam in steam turbine heat to heat heat supply hot water according to claim 1 is characterized in that: described air cooling blow-off line (3) all is connected on the water of condensation gathering-device (16) of steam turbine (2) below with vapor-water heat exchanger admission pipeline (14).
4, a kind of novel condensing system that utilizes the exhaust steam in steam turbine heat to heat heat supply hot water according to claim 1, it is characterized in that: described air cooling blow-off line (3) is directly logical repeatedly with vapor-water heat exchanger admission pipeline (14), and described air cooling blow-off line (3) is connected on the water of condensation gathering-device (16) of steam turbine (2) below.
CN2009200453237U 2009-05-15 2009-05-15 Novel steam condensing system for heating heat-supply hot water by dead steam heat of steam turbine Expired - Fee Related CN201401197Y (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102337933A (en) * 2011-08-17 2012-02-01 山西漳山发电有限责任公司 Cooling system of thermal power plant
CN103437841A (en) * 2013-08-29 2013-12-11 宁夏天纵泓光余热发电技术有限公司 Waste heat power generation system
CN105221224A (en) * 2014-06-10 2016-01-06 国网山西省电力公司电力科学研究院 A kind of turbine discharge residual neat recovering system
CN106870044A (en) * 2017-03-20 2017-06-20 吴联凯 A kind of electricity generation system for recycling industrial waste heat
CN107062934A (en) * 2017-05-15 2017-08-18 华电电力科学研究院 A kind of energy-conservation vacuumizes cooling system and method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102337933A (en) * 2011-08-17 2012-02-01 山西漳山发电有限责任公司 Cooling system of thermal power plant
CN103437841A (en) * 2013-08-29 2013-12-11 宁夏天纵泓光余热发电技术有限公司 Waste heat power generation system
CN105221224A (en) * 2014-06-10 2016-01-06 国网山西省电力公司电力科学研究院 A kind of turbine discharge residual neat recovering system
CN106870044A (en) * 2017-03-20 2017-06-20 吴联凯 A kind of electricity generation system for recycling industrial waste heat
CN106870044B (en) * 2017-03-20 2017-12-08 吴联凯 A kind of electricity generation system for recycling industrial waste heat
CN107062934A (en) * 2017-05-15 2017-08-18 华电电力科学研究院 A kind of energy-conservation vacuumizes cooling system and method
CN107062934B (en) * 2017-05-15 2022-11-25 华电电力科学研究院有限公司 Energy-saving vacuumizing cooling system and method

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ASS Succession or assignment of patent right

Owner name: SHUANGLIANG ECO-ENERGEY SYSTEMS CO.,LTD.

Free format text: FORMER OWNER: SHUANGLIANG AIR CONDITIONING EQUIPMENT CO LTD, JIANGSU

Effective date: 20100913

C41 Transfer of patent application or patent right or utility model
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Effective date of registration: 20100913

Address after: 214444 Jiangsu city of Jiangyin Province Li Town Road No. 1 West

Patentee after: Shuangliang Energy Saving System Co., Ltd.

Address before: 214444 Jiangsu city of Jiangyin Province Li Town Road No. 1 West

Patentee before: Shuangliang Air Conditioning Equipment Co., Ltd., Jiangsu

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100210

Termination date: 20170515

CF01 Termination of patent right due to non-payment of annual fee