CN205638583U - Exhaust steam thermal utilization system of power plant - Google Patents

Exhaust steam thermal utilization system of power plant Download PDF

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Publication number
CN205638583U
CN205638583U CN201620454638.7U CN201620454638U CN205638583U CN 205638583 U CN205638583 U CN 205638583U CN 201620454638 U CN201620454638 U CN 201620454638U CN 205638583 U CN205638583 U CN 205638583U
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China
Prior art keywords
heat
condenser
heat pump
outlet
steam
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Expired - Fee Related
Application number
CN201620454638.7U
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Chinese (zh)
Inventor
张孝勇
赵文波
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China Datang Corp Science and Technology Research Institute Co Ltd
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China Datang Corp Science and Technology Research Institute Co Ltd
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Priority to CN201620454638.7U priority Critical patent/CN205638583U/en
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Abstract

The utility model relates to an exhaust steam thermal utilization system of power plant, including the boiler, a steam turbine, the condenser, the heat pump, peak load calorifier and second grade heat exchange station, the steam turbine passes through the blast pipe and is connected with the condenser, be connected with extraction steam pipe in the intake pipe of steam turbine, the low temperature heat source import of heat pump is connected with the delivery port of condenser, the low temperature heat source export of heat pump is connected with the return water mouth of condenser, the driving heat source import of heat pump is connected with extraction steam pipe, the condensate outlet of heat pump is connected to the boiler, the water supply outlet of heat pump is connected with peak load calorifier's water inlet, peak load calorifier's delivery port passes through pipeline and second grade heat exchange station's heat source access connection, second grade heat exchange station's the heat source export and the water supply access connection of heat pump, second grade heat exchange station's water inlet and water supply source are connected, second grade heat exchange station's delivery port and heat equipment are connected. The utility model discloses the current heat supply unit of power plant can be well adapted to and to steam turbine exhaust steam waste heat utilization, energy saving and consumption reduction's purpose is reached.

Description

Exhaust steam of electric power plant heat utilization system
Technical field
This utility model relates to steam power plant's heat recovery technology field, particularly relates to one and enters exhaust steam in steam turbine The technology of row waste heat recovery.
Background technology
Under energy-saving and emission-reduction main trend, the exhaust steam of steam power plant's thermal power plant unit is carried out waste heat recovery imperative, Exhaust steam of electric power plant waste heat project gets more and more, and this optimization design investment to thermal power plant unit is huge.And it is the biggest Part has been carried out the exhaust steam residual heat recovery project of completion and does not play intended effectiveness in actual motion, many The situation being not suitable with existing thermal power plant unit is all there is in number exhaust steam residual heat project when design and operation.So far, There is no the directive document for exhaust steam of electric power plant waste heat recovery project in industry to put into effect.
Because above-mentioned defect, the design people, the most in addition research and innovation are weary to founding a kind of power plant Vapour heat utilization system, to reach to adapt to power plant's heating system and the purpose of energy-saving consumption-reducing.
Utility model content
For solving above-mentioned technical problem, the purpose of this utility model is to provide a kind of exhaust steam of electric power plant heat utilization system, Can good conformity existing power plant thermal power plant unit exhaust steam in steam turbine is carried out waste heat recovery, reach energy-conservation fall The purpose of consumption.
A kind of power plant of the present utility model weary gas heat utilization system, including boiler, steam turbine, condenser, warm Pump, peak load calorifier and secondary heat exchange station, described boiler is connected with described steam turbine by air inlet pipe, described Steam turbine is connected with described condenser by exhaustor, and the air inlet pipe of described steam turbine connects extraction steam pipe, Described condenser has outlet and water return outlet, described heat pump has low-temperature heat source import, low-temperature heat source exports, Driving heat source import and condensate outlet, the low-temperature heat source import of described heat pump is by pipeline and described condenser Outlet connect, the outlet of the low-temperature heat source of described heat pump is connected by the water return outlet of pipeline with described condenser, The driving heat source import of described heat pump is connected with described extraction steam pipe, and the condensate outlet of described heat pump passes through pipeline Being connected to boiler, the service water outlet of described heat pump is connected with the water inlet of described peak load calorifier by pipeline, The outlet of described peak load calorifier is connected with the thermal source import at described secondary heat exchange station by pipeline, and described two The thermal source outlet of level heat exchange station is connected for water inlet with described heat pump, and the water inlet at described secondary heat exchange station leads to Piping is connected with the resource of water supply of heating equipment, the outlet at described secondary heat exchange station and described heating equipment Connect.
Further, described steam turbine has low pressure (LP) cylinder, and described air inlet pipe is and the low pressure (LP) cylinder of described steam turbine The low pressure (LP) cylinder air induction conduit connected, described extraction steam pipe is connected with described low pressure (LP) cylinder air induction conduit.
Further, the main member at described secondary heat exchange station is heat exchanger, and described heat exchanger is that dividing wall type changes Hot device, heat regenerator, fluidly connect indirect type heat exchanger, direct-contact heat exchanger and compound heat exchange One in device.
Further, described heat pump is lithium bromide absorption type heat pump.
Further, described condenser is water-cooled condenser or air cooling tubes condenser.
Further, described condenser is dividing wall type condenser or contact condenser.
By such scheme, this utility model at least has the advantage that exhaust steam of electric power plant of the present utility model heat Utilizing system, by condenser, exhaust steam in steam turbine is condensed into low-temperature heat source water, heat pump is by extraction steam turbine Steam be driving heat source and recycle from the low-temperature heat source of condenser, produce the hot water of middle megadyne temperature degree, By peak load calorifier, the hot water of middle megadyne temperature degree is further heated up again, obtain the hot water that temperature is higher, by this The higher water of temperature heats water supply as the thermal source at secondary heat exchange station, thus it is temperature required to obtain watering equipment Water supply, it is achieved the UTILIZATION OF VESIDUAL HEAT IN of steam turbine in thermal power plant exhaust steam.
Described above is only the general introduction of technical solutions of the utility model, in order to it is new to better understand this practicality The technological means of type, and can be practiced according to the content of description, below with preferable reality of the present utility model After executing example and coordinating accompanying drawing to describe in detail such as.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail. Following example are used for illustrating this utility model, but are not limited to scope of the present utility model.
See Fig. 1, a kind of exhaust steam of electric power plant heat utilization system described in this utility model one preferred embodiment, including Boiler 1, steam turbine 2, condenser 3, heat pump 4, peak load calorifier 5 and secondary heat exchange station 6, described boiler 1 is connected with described steam turbine 2 by air inlet pipe 7, and described steam turbine 2 is by exhaustor 8 and described condenser 3 connect, in the air inlet pipe 7 of described steam turbine 2 connect have extraction steam pipe 9, described condenser have outlet and Water return outlet, described heat pump has low-temperature heat source import, low-temperature heat source outlet, driving heat source import and condensed fluid Outlet, the low-temperature heat source import 10 of described heat pump is connected with the outlet 11 of described condenser by pipeline, The low-temperature heat source outlet 12 of described heat pump is connected with the water return outlet 13 of described condenser by pipeline, described heat The driving heat source import 14 of pump is connected with described extraction steam pipe 9, and the condensate outlet 15 of described heat pump is by pipe Road is connected to boiler 1, the service water outlet 16 of the described heat pump water inlet by pipeline with described peak load calorifier 17 connect, the thermal source import by pipeline with described secondary heat exchange station of the outlet 18 of described peak load calorifier 19 connect, and the thermal source outlet 20 at described secondary heat exchange station is connected for water inlet 21 with described heat pump, described The water inlet 22 at secondary heat exchange station is connected with the resource of water supply 23 of heating equipment by pipeline, and described two grades are changed The outlet 24 of heat stations is connected with described heating equipment 25.
Described steam turbine has low pressure (LP) cylinder, and described air inlet pipe is the low pressure that the low pressure (LP) cylinder with described steam turbine is connected Cylinder air induction conduit, described extraction steam pipe is connected with described low pressure (LP) cylinder air induction conduit.
The main member at described secondary heat exchange station is heat exchanger, and described heat exchanger is dividing wall type heat exchanger, accumulation of heat Formula heat exchanger, the one fluidly connected in indirect type heat exchanger, direct-contact heat exchanger and composite heat exchanger.
Described heat pump is lithium bromide absorption type heat pump.
Described condenser is water-cooled condenser or air cooling tubes condenser.Described condenser is dividing wall type condenser or connects Touch condenser.
Operation principle of the present utility model is as follows: this utility model first passes through condenser, and exhaust steam in steam turbine is cold Coagulating for low-temperature heat source water, heat pump is driving heat source by the steam of extraction steam turbine and recycles self-solidifying The low-temperature heat source water of vapour device, produces the hot water of middle megadyne temperature degree, then by peak load calorifier by the heat of middle megadyne temperature degree Water further heats up, and obtains the hot water that temperature is higher, using water higher for this temperature as the heat at secondary heat exchange station Water supply is heated in source, thus obtains the water supply that watering equipment is temperature required, it is achieved steam turbine in thermal power plant exhaust steam UTILIZATION OF VESIDUAL HEAT IN.
The above is only preferred implementation of the present utility model, is not limited to this utility model, should When pointing out, for those skilled in the art, without departing from this utility model know-why On the premise of, it is also possible to making some improvement and modification, these improve and modification also should be regarded as this utility model Protection domain.

Claims (6)

1. an exhaust steam of electric power plant heat utilization system, it is characterised in that: include boiler (1), steam turbine (2), Condenser (3), heat pump (4), peak load calorifier (5) and secondary heat exchange station (6), described boiler (1) Being connected with described steam turbine (2) by air inlet pipe (7), described steam turbine (2) passes through exhaustor (8) Being connected with described condenser (3), the upper connection of the air inlet pipe (7) of described steam turbine (2) has extraction steam pipe (9), Described condenser has outlet and water return outlet, described heat pump has low-temperature heat source import, low-temperature heat source exports, Driving heat source import and condensate outlet, the low-temperature heat source import (10) of described heat pump passes through pipeline with described The outlet (11) of condenser connects, and low-temperature heat source outlet (12) of described heat pump passes through pipeline with described The water return outlet (13) of condenser connects, the driving heat source import (14) of described heat pump and described extraction steam pipe (9) Connecting, the condensate outlet (15) of described heat pump is connected to boiler (1), the confession of described heat pump by pipeline Water out (16) is connected with the water inlet (17) of described peak load calorifier by pipeline, and described spike heats The outlet (18) of device is connected with the thermal source import (19) at described secondary heat exchange station by pipeline, and described two The thermal source outlet (20) of level heat exchange station is connected for water inlet (21) with described heat pump, described secondary heat exchange The water inlet (22) stood is connected with the resource of water supply (23) of heating equipment by pipeline, described secondary heat exchange The outlet (24) stood is connected with described heating equipment (25).
Exhaust steam of electric power plant heat utilization system the most according to claim 1, it is characterised in that: described steam turbine Having low pressure (LP) cylinder, described air inlet pipe is the low pressure (LP) cylinder air induction conduit that the low pressure (LP) cylinder with described steam turbine is connected, institute State extraction steam pipe to be connected with described low pressure (LP) cylinder air induction conduit.
Exhaust steam of electric power plant heat utilization system the most according to claim 1, it is characterised in that: described two grades are changed The main member of heat stations is heat exchanger, and described heat exchanger is dividing wall type heat exchanger, heat regenerator, fluid Connect the one in indirect type heat exchanger, direct-contact heat exchanger and composite heat exchanger.
Exhaust steam of electric power plant heat utilization system the most according to claim 1, it is characterised in that: described heat pump is Lithium bromide absorption type heat pump.
Exhaust steam of electric power plant heat utilization system the most according to claim 1, it is characterised in that: described condenser For water-cooled condenser or air cooling tubes condenser.
Exhaust steam of electric power plant heat utilization system the most according to claim 1, it is characterised in that: described condenser For dividing wall type condenser or contact condenser.
CN201620454638.7U 2016-05-18 2016-05-18 Exhaust steam thermal utilization system of power plant Expired - Fee Related CN205638583U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201620454638.7U CN205638583U (en) 2016-05-18 2016-05-18 Exhaust steam thermal utilization system of power plant

Publications (1)

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CN205638583U true CN205638583U (en) 2016-10-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105840256A (en) * 2016-05-18 2016-08-10 中国大唐集团科学技术研究院有限公司 Utilization system of dead steam heat of power plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105840256A (en) * 2016-05-18 2016-08-10 中国大唐集团科学技术研究院有限公司 Utilization system of dead steam heat of power plant

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20161012

Termination date: 20170518

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