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CN107906974B - An air-cooled island surplus energy utilization system - Google Patents

An air-cooled island surplus energy utilization system Download PDF

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Publication number
CN107906974B
CN107906974B CN201710947518.XA CN201710947518A CN107906974B CN 107906974 B CN107906974 B CN 107906974B CN 201710947518 A CN201710947518 A CN 201710947518A CN 107906974 B CN107906974 B CN 107906974B
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CN
China
Prior art keywords
steam
tube bundle
condensate
air
heat exchange
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Application number
CN201710947518.XA
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Chinese (zh)
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CN107906974A (en
Inventor
唐广通
闫晓沛
李铁军
戴喜庆
张伟江
王文营
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Network Hebei Energy Saving Service Co Ltd
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
State Grid Hebei Energy Technology Service Co Ltd
State Grid Corp of China SGCC
Original Assignee
National Network Hebei Energy Saving Service Co Ltd
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
State Grid Hebei Energy Technology Service Co Ltd
State Grid Corp of China SGCC
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Application filed by National Network Hebei Energy Saving Service Co Ltd, Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd, State Grid Hebei Energy Technology Service Co Ltd, State Grid Corp of China SGCC filed Critical National Network Hebei Energy Saving Service Co Ltd
Priority to CN201710947518.XA priority Critical patent/CN107906974B/en
Publication of CN107906974A publication Critical patent/CN107906974A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B11/00—Controlling arrangements with features specially adapted for condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/10—Auxiliary systems, arrangements, or devices for extracting, cooling, and removing non-condensable gases

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The present invention relates to a kind of Air-Cooling Island surplus energy utility systems comprising steam exhaust device, the steam pipe being connect by pipeline with steam exhaust device are mounted on heat-exchanging tube bundle that steam bottom of the tube is connected to its inner cavity, are mounted on the condensate water collecting case that heat-exchanging tube bundle lower end is connected to its inner cavity；Air cooling blower fan is installed between heat-exchanging tube bundle；Condensate pump A is installed by condensed water down-comer in condensate water collecting case lower end；Air supply device and steam condensation device are installed between heat-exchanging tube bundle；A large amount of hot-airs that heat-exchanging tube bundle exports air cooling blower fan discharge are conveyed to boiler fan by air supply tube by the present invention, are transported to burning in boiler, are made full use of thermal energy；Nozzle exchanges heat it with the water vapour in adverse current tube bundle top header, and the moisturizing after making the condensed condensed water of steam and heating drops to jointly in condensate water collecting case, has recycled steam, has improved the working performance of vacuum pump, has improved the economy of unit.

Description

A kind of Air-Cooling Island surplus energy utility system
Technical field
The present invention relates to a kind of Air-Cooling Island surplus energy utility systems, belong to technical field of electric power.
Background technique
Air-Cooling Island, that is, air cooler is the abbreviation of Air-cooled Heat Exchanger, it using the air of nature come to process fluid into The large scale industry heat-exchange apparatus of row cooling (condensation) has cold source sufficient and can save cooling compared with water cooling mode With water, reduce environmental pollution the advantage cheap with maintenance cost.
Now, in China water-deficient area, power plant largely builds air cooling unit, and advantage is the reduction of the evaporation of vapor, but Also there is big energy not to be fully used in its Air-Cooling Island, such as: steam turbine last stage steam discharge is logical from 0 meter of steam exhaust device top It crosses jet chimney and enters 40 meters of high Air-Cooling Islands, the cold air in heat-exchanging tube bundle with air cooling blower fan discharge carries out heat exchange, The condensed water condensed flows into steam exhaust device from 40 meters high of platform, and huge potential energy is not utilized, while in order to subtract Pipe vibration brought by light water impact will also install energy dissipator additional inside condensing water conduit, waste the energy while also mention High production cost；Air cooling blower fan discharge is dispersed into environment with a large amount of hot-airs after the vapor heat exchange in heat-exchanging tube bundle In, thermal pollution is caused to environment, thermal energy is not also utilized；Vacuum pump in Air-Cooling Island counterflow heat exchange tube bundle top by setting The vacuum lead set by counterflow heat exchange restrain in incondensable gas extract out when, inevitably will a large amount of non-condensing steam it is same When be pumped into vacuum pump in, steam, which enters, carries out condensation heat release in vacuum pump, cause vacuum pump fluid temperature increase, affect The working performance of vacuum pump, and condensed condensed water focuses in the steam-water separator of vacuum pump, causes separator liquid level liter Height, overflow pipe overflow discharge are slatterned into trench.
Summary of the invention
The of the invention technical problem of being solved is to provide a kind of the savings energy, reduction production cost, raising unit economy Air-Cooling Island surplus energy utility system.
The present invention adopts the following technical scheme:
The present invention include steam exhaust device, the steam pipe being connect by pipeline with steam exhaust device, be mounted on steam bottom of the tube with The heat-exchanging tube bundle of its inner cavity connection is mounted on the condensate water collecting case that heat-exchanging tube bundle lower end is connected to its inner cavity；In the heat exchange Air cooling blower fan is installed between tube bank；Condensate pump A is installed by condensed water down-comer in condensate water collecting case lower end；Institute It states and air supply device and steam condensation device is installed between heat-exchanging tube bundle.
The present invention installs pressure transmitter on the condensed water down-comer；Steam exhaust device includes being located above deflector Steam chest and the condensate tank below deflector install accident drain valve, the thing on the condensed water down-comer Therefore the drain valve other end is connected to by pipeline with the condensate tank of steam exhaust device, the condensate tank lower end is installed solidifying by pipeline Bear water pump B.
Heat-exchanging tube bundle of the present invention includes downstream heat transfer tube bank and counterflow heat exchange tube bank, counterflow heat exchange tube bank upper end installation Vacuum-pumping tube, counterflow heat exchange tube bank lower end are connect with the condensate water collecting case, and the air supply device includes being mounted on institute The aspiration channel between downstream heat transfer tube bank and counterflow heat exchange tube bank is stated, 1 or more air inlet, institute are set on the aspiration channel It states the aspiration channel other end and crosses workshop upper end and connect with boiler fan.
Steam condensation device of the present invention includes the water supply pipe being mounted on vacuum-pumping tube and is mounted on moisturizing tube end Nozzle, the nozzle are located in vacuum-pumping tube.
Pressure transmitter of the present invention is three, and range is -100kPa~1000kPa.
Aspiration channel of the present invention is two.
Good effect of the present invention is as follows: the present invention by Air-Cooling Island condensed water down-comer directly with condensate pump A entrance phase Even, condensate pump A entrance is changed into positive pressure from traditional negative pressure, since the condensation water potential energy of 40m height difference, condensate pump is utilized The consumed power of A will reduce, and improve energy utilization rate, reduce production cost.The control of condensate pump A is as follows simultaneously: three A three pressure transmitters of condensate pump A entrance take the difference of median and Air-Cooling Island pressure in three values to be greater than 100kPa, condensate pump A allow to start；Median and sky in three pressure transmitter three of condensate pump A entrance three values The difference of cool island pressure is less than 50kPa, and condensate pump A protection is stopped transport；Three pressure transmitters three of condensate pump A entrance three It is chain to open accident draining when the difference of median and Air-Cooling Island pressure in value is greater than 260kPa or condensate pump A failure Air-Cooling Island condensed water is drained into the condensate tank of steam exhaust device by valve, and condensate pump B is to convey various hydrophobic, accident drainings Device.
A large amount of hot-airs that heat-exchanging tube bundle exports air cooling blower fan discharge are conveyed to boiler air-supply by air supply tube by the present invention Machine is transported to burning in boiler, makes full use of thermal energy.
Coolant-temperature gage is lower in water supply pipe, it is exchanged heat with the water vapour in adverse current tube bundle top header by nozzle, makes to steam The condensed condensed water of vapour and heating after moisturizing drop in condensate water collecting case jointly, make vacuum lead extract out only Incondensable gas improves the working performance of vacuum pump to recycle steam, improves the economy of unit.
Detailed description of the invention
Attached drawing 1 is schematic structural view of the invention；
Attached drawing 2 is condensate water collecting tank mounting structure schematic diagram of the present invention；
Attached drawing 3 is aspiration channel structural schematic diagram of the present invention；
Attached drawing 4 is water supply pipe structural schematic diagram of the present invention.
In the accompanying drawings: 1 steam pipe, 2 heat-exchanging tube bundles, 3 condensate water collecting casees, 4 condensed water down-comers, 5 condensate pump A, 6 rows Vapour device, 61 steam chests, 62 condensate tanks, 63 accident drain valves, 64 condensate pump B, the tube bank of 7 downstream heat transfers, 8 counterflow heat exchange pipes Beam, 9 vacuum-pumping tubes, 10 air cooling blower fans, 11 aspiration channels, 12 air inlets, 13 boiler fans, 14 water supply pipes, 15 pressure transmitters, 16 workshops, 17 nozzles.
Specific embodiment
As shown in attached drawing 1-4, the present invention includes steam exhaust device 6, the steam pipe 1 being connect by pipeline with steam exhaust device 6, pacifies The heat-exchanging tube bundle 2 that is connected to mounted in 1 bottom of steam pipe with its inner cavity is mounted on the condensation that 2 lower end of heat-exchanging tube bundle is connected to its inner cavity Water collection tank 3 installs air cooling blower fan 10 between the heat-exchanging tube bundle 2；Pass through condensed water in 3 lower end of condensate water collecting case Down-comer 4 installs condensate pump A5；Air supply device is installed between the two column heat-exchanging tube bundle 2, in counterflow heat exchange tube bundle top Steam condensation device is installed.
The present invention installs three pressure transmitters 15 on the condensed water down-comer 4, range be -100kPa~ 1000kPa；Steam exhaust device 6 includes being located at the steam chest 61 above deflector and the condensate tank 62 below deflector, Accident drain valve 63 is installed on the condensed water down-comer 4,63 other end of accident drain valve is filled by pipeline and steam discharge The connection of condensate tank 62 is set, condensate pump B64 is installed by pipeline in 62 lower end of condensate tank.
Heat exchanger tube 2 of the present invention includes downstream heat transfer pipe 7 and counterflow heat exchange pipe 8, and 8 upper end of counterflow heat exchange pipe passes through top Header 18 installs vacuum-pumping tube 9, and 8 lower end of counterflow heat exchange pipe is connect with the condensate water collecting case 3, the air supply device packet The aspiration channel 11 being mounted between the two column downstream heat transfer tube bank 7 and counterflow heat exchange tube bank 8 is included, the aspiration channel 11 is two Root；1 or more air inlet 12 is set on the aspiration channel 11, and 11 other end of aspiration channel is sent by workshop 16 with boiler Blower 13 connects.
Steam condensation device of the present invention includes the water supply pipe 14 being mounted on vacuum-pumping tube 9 and is mounted on 14 end of water supply pipe The nozzle 17 in portion, the nozzle 17 are located in vacuum-pumping tube 9.
The present invention is directly connected by condensed water down-comer 4 with condensate pump A5 entrance, and condensate pump A5 entrance is from tradition Negative pressure be changed into positive pressure, due to being utilized the condensation water potential energy of 40m height difference, the consumed power of condensate pump A5 will be reduced, and be mentioned High energy utilization rate, reduces production cost.The control of condensate pump A5 is as follows: three condensate pump A5 entrances, three pressure The difference of median and Air-Cooling Island pressure in transmitter is greater than 100kPa, and condensate pump A5 allows to start；Condensate pump A5 enters The difference of median and Air-Cooling Island pressure in three pressure transmitter three values of mouth is less than 50kPa, and condensate pump A5 protection stops Fortune；The difference of median and Air-Cooling Island pressure in the pressure transmitter 15 3 of condensate pump A5 entrance three value is greater than 260kPa It is chain to open accident drain valve 63 or when condensate pump A5 breaks down, the condensed water in Air-Cooling Island condensed water down-comer 4 is arranged Enter into the condensate tank 62 of steam exhaust device, condensate pump B64 is as various hydrophobic, accidents draining the devices of conveying.
A large amount of hot-airs of the outlet of heat-exchanging tube bundle 7 discharge are conveyed to boiler fan 13 by aspiration channel 11 by the present invention, It is transported to burning in boiler, makes full use of its thermal energy.Coolant-temperature gage is lower in water supply pipe 14, by nozzle 17 by itself and vacuum tube 9 In water vapour heat exchange, make the condensed condensed water of steam and heating after moisturizing drop in condensate water collecting case 3 jointly, change The operating condition of vacuum pump has been apt to it, has recycled steam, has improved the economy of unit.
Finally, it is stated that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not intended to limit the invention, it is all Any modification, equivalent replacement or improvement etc., should be included in guarantor of the invention made by within the spirit and principles in the present invention Within the scope of shield.

Claims (5)

1.一种空冷岛余能利用系统，其特征在于其包括排汽装置（6）、通过管路与排汽装置（6）连接的蒸汽管（1）、安装在蒸汽管（1）底部与其内腔连通的换热管束（2）、安装在换热管束（2）下端与其内腔连通的凝结水收集箱（3）；在所述换热管束（2）之间安装空冷风机（10）；1. An air-cooled island residual energy utilization system, characterized in that it comprises a steam exhaust device (6), a steam pipe (1) connected to the steam exhaust device (6) through a pipeline, installed at the bottom of the steam pipe (1) and its A heat exchange tube bundle (2) communicated with the inner cavity, a condensed water collection tank (3) installed at the lower end of the heat exchange tube bundle (2) and communicated with its inner cavity; an air cooling fan (10) is installed between the heat exchange tube bundles (2) ; 在所述凝结水收集箱（3）下端通过凝结水下降管（4）安装凝结水泵A（5）；A condensate pump A (5) is installed at the lower end of the condensate collection tank (3) through the condensate downpipe (4); 在所述换热管束（2）之间安装送风装置及蒸汽凝结装置；Install an air supply device and a steam condensation device between the heat exchange tube bundles (2); 在所述凝结水下降管（4）上安装压力变送器（15）；所述排汽装置（6）包括位于导流板上方的蒸汽箱(61)以及位于导流板下方的凝结水箱（62），在所述凝结水下降管（4）上安装事故排水阀（63），所述事故排水阀（63）另一端通过管路与排汽装置（6）的凝结水箱（62）连通，所述凝结水箱（62）下端通过管路安装凝结水泵B（64）。A pressure transmitter (15) is installed on the condensate downpipe (4); the steam exhaust device (6) includes a steam tank (61) located above the deflector and a condensate tank (61) located below the deflector. 62), an accident drain valve (63) is installed on the condensate downpipe (4), and the other end of the accident drain valve (63) is communicated with the condensate tank (62) of the steam exhaust device (6) through a pipeline, A condensate pump B (64) is installed at the lower end of the condensate tank (62) through a pipeline. 2.根据权利要求1所述的一种空冷岛余能利用系统，其特征在于换热管束（2）包括顺流换热管束（7）和逆流换热管束（8），所述逆流换热管束（8）上端安装抽真空管（9），所述逆流换热管束（8）下端与所述凝结水收集箱（3）连接，所述送风装置包括安装在所述顺流换热管束（7）和逆流换热管束（8）之间的吸风管（11），在所述吸风管（11）上设置1个以上的吸风口（12），所述吸风管（11）另一端越过厂房上端（16）与锅炉送风机（13）连接。2. An air-cooled island waste energy utilization system according to claim 1, characterized in that the heat exchange tube bundle (2) comprises a co-current heat exchange tube bundle (7) and a counter-current heat exchange tube bundle (8), the counter-current heat exchange tube bundle (8) An evacuated tube (9) is installed at the upper end of the tube bundle (8), and the lower end of the counter-current heat exchange tube bundle (8) is connected to the condensate collection tank (3). 7) The suction pipe (11) between the countercurrent heat exchange tube bundle (8), more than one suction port (12) is arranged on the suction pipe (11), and the suction pipe (11) is another One end is connected to the boiler blower (13) across the upper end (16) of the workshop. 3.根据权利要求2所述的一种空冷岛余能利用系统，其特征在于蒸汽凝结装置包括安装在抽真空管（9）上的补水管（14）以及安装在补水管（14）端部的喷嘴（17），所述喷嘴（17）位于抽真空管（9）内。3. An air-cooled island residual energy utilization system according to claim 2, characterized in that the steam condensing device comprises a water supply pipe (14) installed on the evacuated pipe (9) and a water supply pipe (14) installed at the end of the water supply pipe (14). A nozzle (17), the nozzle (17) is located in the evacuated pipe (9). 4.根据权利要求1所述的一种空冷岛余能利用系统，其特征在于所述压力变送器（15）为三个，量程为-100kPa～1000kPa。4. An air-cooled island residual energy utilization system according to claim 1, characterized in that there are three pressure transmitters (15), and the range is -100kPa～1000kPa. 5.根据权利要求2所述的一种空冷岛余能利用系统，其特征在于所述吸风管（11）为两根。5. An air-cooled island residual energy utilization system according to claim 2, characterized in that the number of said suction pipes (11) is two.
CN201710947518.XA 2017-10-12 2017-10-12 An air-cooled island surplus energy utilization system Active CN107906974B (en)

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CN107906974B true CN107906974B (en) 2019-03-22

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108645238A (en) * 2018-07-03 2018-10-12 江苏中伟机械制造有限公司 Condensed water active retracting device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4905474A (en) * 1988-06-13 1990-03-06 Larinoff Michael W Air-cooled vacuum steam condenser
JPH0894098A (en) * 1994-09-26 1996-04-12 Sanki Eng Co Ltd Drain discharging device of steam heat source heat exchanger
US5787970A (en) * 1994-12-06 1998-08-04 Larinoff; Michael W. Air-cooled vacuum steam condenser with mixed flow bundle
CN204100844U (en) * 2014-10-16 2015-01-14 北京科利洁环境科技有限公司 Thermal power plant's Air-cooled Unit hot-air recycling system
CN205860801U (en) * 2016-07-27 2017-01-04 双良节能系统股份有限公司 direct air cooling system with peak cooling device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4905474A (en) * 1988-06-13 1990-03-06 Larinoff Michael W Air-cooled vacuum steam condenser
JPH0894098A (en) * 1994-09-26 1996-04-12 Sanki Eng Co Ltd Drain discharging device of steam heat source heat exchanger
US5787970A (en) * 1994-12-06 1998-08-04 Larinoff; Michael W. Air-cooled vacuum steam condenser with mixed flow bundle
CN204100844U (en) * 2014-10-16 2015-01-14 北京科利洁环境科技有限公司 Thermal power plant's Air-cooled Unit hot-air recycling system
CN205860801U (en) * 2016-07-27 2017-01-04 双良节能系统股份有限公司 direct air cooling system with peak cooling device

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