CN209263703U - A kind of device that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system - Google Patents
A kind of device that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system Download PDFInfo
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- CN209263703U CN209263703U CN201821693243.8U CN201821693243U CN209263703U CN 209263703 U CN209263703 U CN 209263703U CN 201821693243 U CN201821693243 U CN 201821693243U CN 209263703 U CN209263703 U CN 209263703U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to a kind of devices that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system.At present for Direct Air-cooled Unit, waste heat recovery efficiency is to be improved.Direct Air-cooled Unit exhausted spare heat is recycled to the characteristics of device of boiler supply air system by the utility model is: Steam Turbine is connected with Air-Cooling Island by turbine discharge pipeline, Air-Cooling Island is connected with Condensate of Direct Air-cooling Unit case by Air-Cooling Island condensate return pipe, evaporator, absorber, generator and condenser head and the tail are sequentially connected, driving steam steam inlet pipe and driving steam condensation water pipe are connect with generator, cyclic water tank is connected with absorber by system circulation waterpipe, frequency conversion type system circulation water pump is mounted on system circulation waterpipe, pressure fan, air-supply steam air heater and air preheater are sequentially connected.The utility model can reduce units consumption, improve the economy of unit operation, at the same can reduce a large amount of weary heat drain into around change commanders caused thermal pollution.
Description
Technical field
The utility model relates to a kind of using Direct Air-cooled Unit low-pressure final stage or penult steam extraction as driving steam
Absorption type heat pump group, the exhaust steam residual heat for entering Air-Cooling Island condensation to Direct Air-cooled Unit steam discharge recycles, and is set by system
The heat of recycling is delivered to boiler side First air and air-supply steam air heater by the circulation set, for substituting in traditional design
The Direct Air-cooled Unit exhaust steam waste heat utilization technology that auxiliary steam (four sections of steam extractions) heats boiler First air and air-supply, tool
Body is related to a kind of device that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system.
Background technique
In recent years, with the rapid development of China's power industry, large capacity, the thermal power generation unit of high parameter are each in the whole nation
Ground is built one after another.For the wide geographic area of northwest China, since the serious deficient and country of water resource is for new-built unit
The requirement of environmental protection, Direct Air-Cooled just become the commonplace mode of the cooling one kind of Steam Turbine steam discharge.For Direct Air-Cooled machine
For group, steam discharge is directly entered unit Air-Cooling Island cooling system, drives air to the use pair of unit steam discharge by air cooling blower fan
The mode of stream heat exchange is cooled down, and entire cyclic process is closed cycle, so the cooling required water consumption of unit is almost
Zero, consumption of the thermal power generation unit for water resource is reduced to the greatest extent.But simultaneously as using the steamer of Direct Air-Cooled
The unit steam discharge type of cooling, design back-pressure 10kPa or more high compared with water chiller, design THA operating condition under steam discharge temperature
For degree at 50 DEG C or more, turbine low pressure cylinder exhausted spare heat accounts for 45% or more of boiler export heating load, produced by turbine discharge
The loss of weary heat be huge.
At present for Direct Air-cooled Unit, the mode of exhaust steam waste heat utilization is primarily directed to there is the straight of heat demand
Air cooling unit is connect, mainly recycles exhausted spare heat into winter heating system, for a large amount of non-heating unit,
The part of waste heat fails to make full use of, and can only be cooled down by the Air-Cooling Island of unit, and amount of heat is brought by air to big compression ring
In border.The discharge of a large amount of weary heat of the part, the energy consumption not only for unit is a kind of greatly loss, simultaneously for ring around
Border also results in inevitable thermal pollution.Simultaneously because the northern area of China winter is very long and very cold, winter unit are transported
When row, surrounding air temperature is most down to subzero 10 DEG C hereinafter, still enter sky according to the First air and supply air temperature of design boiler
It is preheated before air preheater, so that First air or the temperature of air-supply will reach 25 DEG C or so, it is empty pre- due to entering to reduce
The low-temperature corrosion of air preheater caused by the First air or supply air temperature of device are too low and stifled ash.At present the First air of unit design and
The heat source preheated in Boiler Air Heater's of blowing uses the auxiliary vapour header in steam turbine side (four sections of steam extractions) steam, winter operation phase entire in this way
Between can expend a large amount of high-quality steam, influence unit operation economy.Although publication date is on May 27th, 2015, open
Number for CN104653242A Chinese patent in, disclose a kind of Direct Air-cooled Unit waste-heat recovery device, the Direct Air-Cooled machine
Group waste-heat recovery device needs Direct Air-cooled Unit the waste heat of cooling exhaust steam in steam turbine to be used to heat First air and Secondary Air,
To reduce the caloric receptivity of First air, Secondary Air in the boiler, thus reach energy-efficient purpose, but the Direct Air-cooled Unit waste heat
The structure design of recyclable device is not reasonable, and waste heat recovery efficiency is to be improved.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide a kind of using directly empty
The absorption type heat pump group of cold group low-pressure final stage or penult steam extraction as driving steam, enters sky to Direct Air-cooled Unit steam discharge
The exhaust steam residual heat of cool island condensation is recycled, and the heat of recycling is delivered to boiler side by the circulation that system is arranged
First air and air-supply steam air heater, for substitute the auxiliary steam in traditional design (four sections of steam extractions) to boiler First air and blow into
The Direct Air-cooled Unit exhaust steam waste heat utilization technology of row heating.On the one hand units consumption can be reduced, the warp of unit operation is improved
Ji property, while a large amount of weary heat can be reduced and drain into caused thermal pollution of around changing commanders.
The technical scheme in the invention for solving the above technical problem is: this recycles Direct Air-cooled Unit exhausted spare heat
To boiler supply air system method the characteristics of be: driven using the low-pressure final stage of 0.1MPa or 0.1MPa or so or penult steam extraction
The exhausted spare heat that dynamic absorption heat pump grouping machine group low pressure (LP) cylinder drains into Air-Cooling Island condensation is recycled, and the heat of recycling, which passes through, is
The circulation for the enclosed being arranged of uniting is sent to Boiler Air Heater's and is heated to boiler air-supply and First air.
Preferably, the heat that the utility model uses absorption type heat pump group to recycle Direct Air-cooled Unit exhausted spare heat
Amount, the circulation for the enclosed being arranged by system are sent to Boiler Air Heater's and are heated to boiler air-supply and First air；Into
Enter absorption type heat pump group and carry out the steam exhaust that the waste heat heat source of waste heat recycling is condensed for Direct Air-cooled Unit steam discharge into Air-Cooling Island,
Directly Direct Air-cooled Unit steam discharge is derived to Air-Cooling Island pipeline.
Preferably, the steam exhaust that the utility model Direct Air-cooled Unit steam discharge is condensed into Air-Cooling Island is by absorption
After heat pump carries out heat recovery, condensate pipe is back to directly after condensed water is condensed by Direct Air-Cooled steam discharge to absorption heat pump
Air cooling unit condensate tank completes suction to unit steam discharge using the vacuum in Condensate of Direct Air-cooling Unit case, make its into
Enter absorption type heat pump group, while its condensed water being enabled to automatically return to Condensate of Direct Air-cooling Unit case using the pressure difference at this
In.
Preferably, what the circulation that Tthe utility model system is provided with enclosed was used to recycle absorption type heat pump group
Heat is sent to boiler side First air steam air heater and air-supply steam air heater, to substitute in existing design warm wind during unit winter operation
The steam of auxiliary vapour header (four sections of steam extractions) used by device heats boiler First air and air-supply.
Preferably, Tthe utility model system is provided with variable frequency closed type water circulating pump for providing the heat for recycling heat pump group
Amount is delivered to circulation power required for boiler side First air steam air heater and air-supply steam air heater, while also acting as variable frequency adjustment work
With for adjusting First air and supply air temperature after steam air heater heats.
Preferably, the utility model is provided with the circulation of enclosed due to system, so for boiler First air
Steam air heater and air-supply steam air heater heat First air and air-supply by the way of air water heat exchange, while can retain former design
Middle auxiliary steam improves the safety and stability of unit operation to steam air heater interface pipe to ensure the spare of Boiler Air Heater's heat source
Property.
A kind of device that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system, design feature are: packet
Include Steam Turbine, turbine discharge pipeline, Air-Cooling Island, Air-Cooling Island condensate return pipe, Condensate of Direct Air-cooling Unit case, directly
Air-cooled steam discharge to absorption type heat pump line, Direct Air-Cooled steam discharge to absorption heat pump condense after condensate pipe, evaporator, absorber,
System circulating water outlet pipe, driving steam steam inlet pipe, driving steam condensation water pipe, system circulation after generator, condenser, heating
Waterpipe, frequency conversion type system circulation water pump, a wind inlet, First air intake screen, primary air fan, pressure fan, air-supply warm wind
Device, First air steam air heater, cyclic water tank and air preheater, the Steam Turbine and Air-Cooling Island are connected by turbine discharge pipeline,
The Air-Cooling Island is connected with Condensate of Direct Air-cooling Unit case by Air-Cooling Island condensate return pipe, and the Direct Air-Cooled steam discharge is extremely
The both ends of absorption type heat pump line are connected on turbine discharge pipeline and evaporator, the Condensate of Direct Air-cooling Unit case
It is connected with evaporator by condensate pipe after Direct Air-Cooled steam discharge to absorption heat pump condensation, the evaporator, absorber, generation
Device and condenser head and the tail are sequentially connected, and the driving steam steam inlet pipe and driving steam condensation water pipe are connect with generator, institute
It states condenser to connect with air-supply steam air heater and First air steam air heater respectively by system circulating water outlet pipe after heating, the air-supply
Steam air heater and First air steam air heater are connect with cyclic water tank, and the cyclic water tank and absorber are connected by system circulation waterpipe
It connects, the frequency conversion type system circulation water pump is mounted on system circulation waterpipe, the pressure fan, air-supply steam air heater and air preheater
It is sequentially connected, a wind inlet, First air intake screen, primary air fan, First air steam air heater and air preheater are sequentially connected.
Preferably, the utility model further includes ancillary equipment, the absorber, ancillary equipment and condenser successively connect
It connects.
Preferably, the utility model further includes Direct Air-Cooled steam discharge to absorption heat pump pipe break valve, air-cooled steam discharge
Condensing water conduit shut-off valve, system circulating water are into after absorption type heat pump group pipe break valve, heating after to absorption heat pump condensation
System circulating water outlet conduit shut-off valve, driving steam steam inlet pipe road shut-off valve and driving steam condensate pipe break valve, institute
It states Direct Air-Cooled steam discharge to absorption heat pump pipe break valve to be mounted on Direct Air-Cooled steam discharge to absorption type heat pump line, the sky
After condensing water conduit shut-off valve is mounted on Direct Air-Cooled steam discharge to absorption heat pump condensation after cold steam discharge is condensed to absorption heat pump
On condensate pipe, the system circulating water is mounted on system circulation waterpipe into absorption type heat pump group pipe break valve, described
The installation of system circulating water outlet conduit shut-off valve is after the heating on system circulating water outlet pipe after heating, and the driving steam is into vapour
Pipe break valve is mounted on driving steam steam inlet pipe, and it is solidifying that the driving steam condensate pipe break valve is mounted on driving steam
It bears water on pipe.
Preferably, the utility model further includes Direct Air-Cooled steam discharge to absorption heat pump pipeline regulating valve, system circulation
Water is into absorption type heat pump group pipeline regulating valve and drives steam steam inlet pipe road regulating valve, the Direct Air-Cooled steam discharge to absorption type heat
Pump line road regulating valve is mounted on Direct Air-Cooled steam discharge to absorption type heat pump line, and the system circulating water is into absorption type heat pump group pipe
Road regulating valve is mounted on system circulation waterpipe, and driving steam steam inlet pipe road regulating valve is mounted on driving steam steam inlet pipe
On.
The utility model compared with prior art, has the advantage that for 600MW grades of Direct Air-cooled Units, design
THA operating condition under design back-pressure be 14kPa, corresponding saturation temperature be 50 DEG C.For the row for making full use of Direct Air-cooled Unit
Vapour waste heat reduces energy loss, improves the economy of unit operation, while reducing the dirt of ambient heat caused by the weary hot driving of unit
Dye.The utility model recycles Direct Air-cooled Unit exhausted spare heat using absorption heat pump technology, and is arranged by system
Circulation by the heat of recycling be delivered to boiler side First air and air-supply steam air heater, it is auxiliary in traditional design for substituting
Steam (four sections of steam extractions) is helped to heat boiler First air and air-supply.
The utility model Direct Air-cooled Unit exhaust steam waste heat utilization device is the low pressure end using pressure in 0.1MPa or so
The absorption type heat pump group of grade or penult steam extraction as driving steam, enters Air-Cooling Island to Direct Air-cooled Unit steam discharge and cools down
Exhaust steam residual heat be recycled, and it is primary by the circulation that system is arranged the heat of recycling to be delivered to boiler side
Wind and air-supply steam air heater, add for substituting the auxiliary steam in traditional design (four sections of steam extractions) to boiler First air and air-supply
Heat.It is the steam discharge of Direct Air-cooled Unit that it, which enters absorption type heat pump group to carry out the waste heat heat source of waste heat recycling, can be directly derived from straight
The blow-off line of air cooling unit steam discharge to Air-Cooling Island is connect, Direct Air-cooled Unit steam discharge carries out cooling steam exhaust into Air-Cooling Island and passing through
After absorption heat pump carries out heat recovery, condensed water can pass through condensate pipe after Direct Air-Cooled steam discharge to absorption heat pump condensation
It is back to Condensate of Direct Air-cooling Unit case (hot well), the suction to unit steam discharge is completed using the vacuum in condensate tank, makes
It enters absorption type heat pump group, while its condensed water can automatically return to unit condensate tank (hot well) using the pressure difference at this
In.Unit low-pressure final stage or penult steam extraction of the pressure rating in 0.1MPa can be used in the driving steam of absorption heat pump, driving
The condensed water of steam can be recycled in the condensate tank of Direct Air-cooled Unit by pipeline.System is provided with special closed cycle
Water system, heat to the boiler side First air and air-supply steam air heater for conveying the recycling of absorption type heat pump group heat it,
To substitute the steam that the auxiliary vapour header (four sections of steam extractions) used in former design heats boiler First air and air-supply, improve
The economy of unit operation.
The utility model is equipped with regulating valve on the Direct Air-Cooled steam discharge to absorption type heat pump line for entering absorption heat pump, can
According to the difference of exhaust temperature under different operating conditions, the steam exhaust flow of absorption heat pump is entered by adjusting valve regulation, and then is controlled
The stability of absorption type heat pump group in the process of running.In the Direct Air-Cooled steam discharge for entering absorption heat pump to absorption type heat pump line
With isolating valve (shut-off valve) is provided on steam exhaust condensing water conduit, convenient for the isolation and maintenance of system.In driving jet chimney
It is upper that regulating valve is housed, convenient for controlling driving quantity of steam.Driving jet chimney on and driving steam condensing water conduit
On be provided with isolating valve (shut-off valve), convenient for the isolation and maintenance of system.The condensed water of driving steam can be back to directly by pipeline
It connects in air cooling unit condensate tank (hot well).In closed circle water system be provided with enclosed expansion tank, for system water supplement with
And maintain the stable of closed circle water system.Enter the pipeline and closed cycle water of absorption type heat pump group in closed cycle water
It is provided on the condensing water conduit of absorption type heat pump group out isolating valve (shut-off valve), convenient for the isolation and maintenance of system.
It is recycled using the exhausted spare heat that absorption heat pump grouping machine group low pressure (LP) cylinder drains into Air-Cooling Island condensation, the heat of recycling
Amount is sent to Boiler Air Heater's by the circulation of enclosed and is heated to boiler air-supply and First air.Absorption type heat pump group
Low-pressure final stage or the penult steam extraction of 0.1MPa or so can be used in driving steam.This method and device are on the one hand to Direct Air-Cooled machine
A large amount of waste heats of group steam discharge are recycled, and the use of four sections of steam extractions of a large amount of high-quality can be saved in unit winter operation
Amount reduces the heat of unit Air-Cooling Island furthermore by utilizing to partially draining into the low pressure (LP) cylinder steam discharge that Air-Cooling Island is condensed
Load improves the economy of unit operation.The present apparatus can effectively to boiler First air and air-supply heating, can be avoided because
For enter air preheater First air and supply air temperature it is too low caused by air preheater low-temperature corrosion and clogging phenomenon generation,
Improve the security and stability of unit operation.
The utility model has following technical effect that 1, is with Chang Dong vapour factory, the Northwest 600MW Direct Air-cooled Unit
Example, the mean temperature in six months April of annual October to next year are computed using seven sections of steam extractions of unit at 1.3 DEG C as absorption
The driving steam of formula heat pump, putting into the auxiliary steam amount that the device can be saved is 13.3t/h or so, and increased generated energy is
3624kw or so can save 217.5 ten thousand yuan of fund within the above-mentioned period of putting into operation.2, the investment of the equipment can effectively absorb
The exhausted spare heat of Direct Air-cooled Unit, this is just effectively reduced the thermic load of unit Air-Cooling Island, directly empty under above-mentioned operating condition
1% or so of the thermic load for the excess heat duty cool island being used effectively in cold group steam discharge, and then reduce the operation back of unit
Pressure promotes the economy of unit operation.
Detailed description of the invention
Fig. 1 is the device that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system in the utility model embodiment
Structural schematic diagram.
In figure: 1, Steam Turbine；2, turbine discharge pipeline；3, Air-Cooling Island；4, Air-Cooling Island condensate return pipe；5, directly
Air cooling unit condensate tank；6, Direct Air-Cooled steam discharge is to absorption heat pump pipe break valve；7, Direct Air-Cooled steam discharge is to absorption
Heat pump pipe；8, Direct Air-Cooled steam discharge is to absorption heat pump pipeline regulating valve；9, after Direct Air-Cooled steam discharge to absorption heat pump condensation
Condensate pipe；10, condensing water conduit shut-off valve after air-cooled steam discharge to absorption heat pump condensation；11, evaporator；12, absorber；
13, generator；14, condenser；15, system circulating water is into absorption type heat pump group pipe break valve；16, system circulating water is into absorption
Formula heat pump group pipeline regulating valve；17, system circulating water outlet conduit shut-off valve after heating；18, system circulating water is discharged after heating
Pipe；19, steam steam inlet pipe is driven；20, steam steam inlet pipe road shut-off valve is driven；21, steam steam inlet pipe road regulating valve is driven；22,
Drive steam condensate pipe break valve；23, steam condensation water pipe is driven；24, system circulation waterpipe；25, frequency conversion type system
Water circulating pump；26, a wind inlet；27, First air intake screen；28, primary air fan；29, pressure fan；30, air-supply steam air heater；
31, First air steam air heater；32, cyclic water tank；33, ancillary equipment；34, air preheater.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
Referring to Fig. 1, Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system in the present embodiment method: use
The low-pressure final stage of 0.1MPa or 0.1MPa or so or the absorption heat pump grouping machine group low pressure (LP) cylinder of penult steam extraction driving drain into sky
The exhausted spare heat that cool island 3 condenses is recycled, and the circulation for the enclosed that the heat of recycling is arranged by system is sent to boiler
Steam air heater is blown to boiler and First air heats.
The heat that the present embodiment uses absorption type heat pump group to recycle Direct Air-cooled Unit exhausted spare heat, is set by system
The circulation for the enclosed set is sent to Boiler Air Heater's and is heated to boiler air-supply and First air；Into absorption type heat pump group
The steam exhaust that the waste heat heat source of waste heat recycling is condensed for Direct Air-cooled Unit steam discharge into Air-Cooling Island is carried out, direct sky is directly derived from
Cold group steam discharge is to Air-Cooling Island pipeline.
The steam exhaust that Direct Air-cooled Unit steam discharge in the present embodiment is condensed into Air-Cooling Island by absorption heat pump into
After row heat recovery, condensed water is back to Direct Air-Cooled by condensate pipe 9 after Direct Air-Cooled steam discharge to absorption heat pump condensation
Unit condensate tank 5 is completed the suction to unit steam discharge using the vacuum in Condensate of Direct Air-cooling Unit case 5, is made it into
Absorption type heat pump group, while its condensed water being enabled to automatically return to Condensate of Direct Air-cooling Unit case 5 using the pressure difference at this
In.System is provided with the circulation of enclosed for sending the heat that absorption type heat pump group recycles to boiler side First air warm wind
Device 31 and air-supply steam air heater 30, to substitute in existing design auxiliary vapour header used by steam air heater during unit winter operation
The steam of (four sections of steam extractions) heats boiler First air and air-supply.
System in the present embodiment is provided with variable frequency closed type water circulating pump and is used to provide the heat conveying for recycling heat pump group
To boiler side First air steam air heater 31 and air-supply steam air heater 30 required for circulation power, while also act as variable frequency adjustment effect,
For adjusting First air and supply air temperature after steam air heater heats.Since system is provided with the circulation of enclosed, institute
First air and air-supply are added in a manner of being exchanged heat for boiler First air steam air heater 31 and air-supply steam air heater 30 using air water
Heat, while auxiliary steam in former design can be retained and mentioned to steam air heater interface pipe with ensureing the spare of Boiler Air Heater's heat source
The security and stability of high unit operation.
It by the device that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system include Steam Turbine in the present embodiment
1, turbine discharge pipeline 2, Air-Cooling Island 3, Air-Cooling Island condensate return pipe 4, Condensate of Direct Air-cooling Unit case 5, Direct Air-Cooled
Steam discharge is to absorption heat pump pipe break valve 6, Direct Air-Cooled steam discharge to absorption type heat pump line 7, Direct Air-Cooled steam discharge to absorption
Condensate pipe 9, air-cooled steam discharge to absorption heat pump after heat pump pipeline regulating valve 8, Direct Air-Cooled steam discharge to absorption heat pump condense
Condensing water conduit shut-off valve 10 after condensation, evaporator 11, absorber 12, generator 13, condenser 14, system circulating water are into absorption
Formula heat pump group pipe break valve 15, system circulating water go out into system circulating water after absorption type heat pump group pipeline regulating valve 16, heating
System circulating water outlet pipe 18, driving steam steam inlet pipe 19, the cut-off of driving steam steam inlet pipe road after waterpipe shut-off valve 17, heating
Valve 20, driving steam steam inlet pipe road regulating valve 21, driving steam condensate pipe break valve 22, driving steam condensation water pipe 23,
System circulation waterpipe 24, frequency conversion type system circulation water pump 25, wind inlets 26, a First air intake screens 27, primary air fan
28, pressure fan 29, air-supply steam air heater 30, First air steam air heater 31, cyclic water tank 32, ancillary equipment 33 and air preheater 34.
Steam Turbine 1 and Air-Cooling Island 3 in the present embodiment are connected by turbine discharge pipeline 2, Air-Cooling Island 3 and directly sky
Cold group condensate tank 5 is connected by Air-Cooling Island condensate return pipe 4, Direct Air-Cooled steam discharge to the both ends of absorption type heat pump line 7
It is connected on turbine discharge pipeline 2 and evaporator 11, Condensate of Direct Air-cooling Unit case 5 and evaporator 11 pass through directly
Condensate pipe 9 connects after air-cooled steam discharge is condensed to absorption heat pump, evaporator 11, absorber 12, generator 13 and condenser 14
Head and the tail are sequentially connected, and absorber 12, ancillary equipment 33 and condenser 14 are sequentially connected.
Driving steam steam inlet pipe 19 and driving steam condensation water pipe 23 in the present embodiment are connect with generator 13, are condensed
Device 14 is connect with air-supply steam air heater 30 and First air steam air heater 31 respectively by system circulating water outlet pipe 18 after heating, and air-supply is warm
Wind device 30 and First air steam air heater 31 are connect with cyclic water tank 32, and cyclic water tank 32 and absorber 12 pass through system circulation water pipe
Road 24 connects, and frequency conversion type system circulation water pump 25 is mounted on system circulation waterpipe 24, pressure fan 29, air-supply 30 and of steam air heater
Air preheater 34 is sequentially connected, a wind inlet 26, First air intake screen 27, primary air fan 28, First air steam air heater 31 and sky
Pre- device 34 is sequentially connected.
Direct Air-Cooled steam discharge to absorption heat pump pipe break valve 6 in the present embodiment is mounted on Direct Air-Cooled steam discharge to suction
On receipts formula heat pump pipe 7, condensing water conduit shut-off valve 10 is mounted on Direct Air-Cooled steam discharge after air-cooled steam discharge to absorption heat pump condenses
After to absorption heat pump condensation on condensate pipe 9, system circulating water is mounted on system into absorption type heat pump group pipe break valve 15
On circulating water pipeline 24, system circulating water outlet conduit shut-off valve 17 installs system circulating water outlet pipe 18 after the heating after heating
On, driving steam steam inlet pipe road shut-off valve 20 is mounted on driving steam steam inlet pipe 19, drives steam condensate pipe break valve
22 are mounted on driving steam condensation water pipe 23.Direct Air-Cooled steam discharge to absorption heat pump pipeline regulating valve 8 is mounted on direct sky
On cold steam discharge to absorption type heat pump line 7, system circulating water is mounted on system circulating water into absorption type heat pump group pipeline regulating valve 16
On pipeline 24, driving steam steam inlet pipe road regulating valve 21 is mounted on driving steam steam inlet pipe 19.
The utility model Direct Air-cooled Unit exhausted spare heat recyclable device enters absorption type heat pump group and carries out waste heat recycling
Waste heat heat source be Direct Air-cooled Unit steam discharge cooling steam exhaust is carried out into Air-Cooling Island, can directly be derived from Direct Air-cooled Unit steam discharge
To the turbine discharge pipeline 2 of Air-Cooling Island；Direct Air-cooled Unit steam discharge carries out cooling steam exhaust by absorption into Air-Cooling Island
After heat pump carries out heat recovery, condensed water can be back to by condensate pipe 9 after Direct Air-Cooled steam discharge to absorption heat pump condensation
Condensate of Direct Air-cooling Unit case 5(hot well), complete suction to unit steam discharge using the vacuum in condensate tank, make its into
Enter absorption type heat pump group, while its condensed water being enabled to automatically return to 5 unit condensate tanks (hot well) using the pressure difference at this
In；Direct Air-Cooled steam discharge is equipped on the Direct Air-Cooled steam discharge to absorption type heat pump line 7 for entering absorption heat pump to absorption type heat
Pump line road regulating valve 8 can enter the steam exhaust stream of absorption heat pump by adjusting according to the difference of exhaust temperature under different operating conditions
Amount, and then control the stability of absorption type heat pump group in the process of running；Entering the Direct Air-Cooled steam discharge of absorption heat pump extremely
Direct Air-Cooled row is respectively provided on condensate pipe 9 after absorption type heat pump line 7 and Direct Air-Cooled steam discharge to absorption heat pump condensation
Condensing water conduit shut-off valve 10 after vapour is condensed to absorption heat pump pipe break valve 6 and air-cooled steam discharge to absorption heat pump, is convenient for
The isolation and maintenance of system.
The utility model Direct Air-cooled Unit exhaust steam waste heat utilization device is the low pressure end using pressure in 0.1MPa or so
The absorption type heat pump group of grade or penult steam extraction as driving steam is equipped with driving steam into vapour on driving steam steam inlet pipe 19
Pipeline regulating valve 21, convenient for controlling driving quantity of steam；Driving steam steam inlet pipe 19 on and driving steam condensation water pipe
Driving steam steam inlet pipe road shut-off valve 20 and driving steam condensate pipe break valve 22 are respectively set on 23, convenient for system every
From with maintenance；Drive the condensed water of steam can be by driving steam condensation water pipe 23 to be back to Condensate of Direct Air-cooling Unit case 5(heat
Well) in.
The utility model Direct Air-cooled Unit exhausted spare heat is recycled in the method and device of Boiler Air Heater's and is provided with specially
The closed circle water system of door, frequency conversion type system circulation water pump 25 are used to convey the recirculated water after absorbing heat in absorption type heat pump group
To boiler side First air and air-supply steam air heater 30, First air steam air heater 31, First air therethrough and air-supply are heated, with
The steam that the auxiliary vapour header (four sections of steam extractions) used in the former design of substitution heats boiler First air and air-supply, improves machine
The economy of group operation.The effect of cyclic water tank 32 is that moisturizing is carried out to closed circle water system, the safety of safeguards system operation.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to the utility model structure example explanation described in this specification.
All equivalence changes or simple change done according to structure, feature and principle described in the concept of the patent of the utility model, are wrapped
It includes in the protection scope of the utility model patent.Those skilled in the art of the present invention can be to described
Specific embodiment does various modifications or additions or is substituted in a similar manner, without departing from the knot of the utility model
Structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (4)
1. a kind of device that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system, it is characterised in that: including steamer
Unit (1), turbine discharge pipeline (2), Air-Cooling Island (3), Air-Cooling Island condensate return pipe (4), Condensate of Direct Air-cooling Unit
Condensate pipe after case (5), Direct Air-Cooled steam discharge to absorption type heat pump line (7), Direct Air-Cooled steam discharge to absorption heat pump condense
(9), system circulating water outlet pipe (18), drive after evaporator (11), absorber (12), generator (13), condenser (14), heating
Dynamic steam steam inlet pipe (19), driving steam condensation water pipe (23), system circulation waterpipe (24), frequency conversion type system circulation water pump
(25), a wind inlet (26), First air intake screen (27), primary air fan (28), pressure fan (29), air-supply steam air heater
(30), First air steam air heater (31), cyclic water tank (32) and air preheater (34), the Steam Turbine (1) and Air-Cooling Island (3) pass through
Turbine discharge pipeline (2) connection, the Air-Cooling Island (3) and Condensate of Direct Air-cooling Unit case (5) pass through Air-Cooling Island condensed water
Return pipe (4) connection, the both ends of the Direct Air-Cooled steam discharge to absorption type heat pump line (7) are connected to turbine discharge pipeline
(2) and on evaporator (11), the Condensate of Direct Air-cooling Unit case (5) and evaporator (11) pass through Direct Air-Cooled steam discharge to suction
Condensate pipe (9) connects after the condensation of receipts formula heat pump, the evaporator (11), absorber (12), generator (13) and condenser
(14) it is sequentially connected from beginning to end, the driving steam steam inlet pipe (19) and driving steam condensation water pipe (23) connect with generator (13)
Connect, the condenser (14) by heating after system circulating water outlet pipe (18) respectively with air-supply steam air heater (30) He Yici air-heating
Wind device (31) connection, the air-supply steam air heater (30) and First air steam air heater (31) are connect with cyclic water tank (32), described to follow
Ring water tank (32) and absorber (12) are connected by system circulation waterpipe (24), frequency conversion type system circulation water pump (25) peace
On system circulation waterpipe (24), the pressure fan (29), air-supply steam air heater (30) and air preheater (34) are sequentially connected, institute
State a wind inlet (26), First air intake screen (27), primary air fan (28), First air steam air heater (31) and air preheater (34)
It is sequentially connected.
2. the device according to claim 1 that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system, special
Sign is: further including ancillary equipment (33), the absorber (12), ancillary equipment (33) and condenser (14) are sequentially connected.
3. the device according to claim 1 that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system, special
Sign is: further including after Direct Air-Cooled steam discharge is condensed to absorption heat pump pipe break valve (6), air-cooled steam discharge to absorption heat pump
Condensing water conduit shut-off valve (10), system circulating water into absorption type heat pump group pipe break valve (15), heating after system circulating water
Outlet conduit shut-off valve (17), driving steam steam inlet pipe road shut-off valve (20) and driving steam condensate pipe break valve (22),
The Direct Air-Cooled steam discharge to absorption heat pump pipe break valve (6) is mounted on Direct Air-Cooled steam discharge to absorption type heat pump line (7)
On, condensing water conduit shut-off valve (10) is mounted on Direct Air-Cooled steam discharge to absorption after the air-cooled steam discharge to absorption heat pump condenses
After the condensation of formula heat pump on condensate pipe (9), the system circulating water is mounted on into absorption type heat pump group pipe break valve (15) is
It unites on circulating water pipeline (24), system circulating water outlet conduit shut-off valve (17) installs system circulation after the heating after the heating
On water outlet pipe (18), driving steam steam inlet pipe road shut-off valve (20) is mounted in driving steam steam inlet pipe (19), described
Driving steam condensate pipe break valve (22) is mounted in driving steam condensation water pipe (23).
4. the device according to claim 1 that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system, special
Sign is: further including Direct Air-Cooled steam discharge to absorption heat pump pipeline regulating valve (8), system circulating water into absorption type heat pump group pipe
Road regulating valve (16) and driving steam steam inlet pipe road regulating valve (21), the Direct Air-Cooled steam discharge to absorption heat pump pipeline are adjusted
Valve (8) is mounted on Direct Air-Cooled steam discharge to absorption type heat pump line (7), and the system circulating water is into absorption type heat pump group pipeline tune
Section valve (16) is mounted on system circulation waterpipe (24), and driving steam steam inlet pipe road regulating valve (21) is mounted on driving and steams
On vapour steam inlet pipe (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821693243.8U CN209263703U (en) | 2018-10-18 | 2018-10-18 | A kind of device that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821693243.8U CN209263703U (en) | 2018-10-18 | 2018-10-18 | A kind of device that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209263703U true CN209263703U (en) | 2019-08-16 |
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ID=67558481
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821693243.8U Active CN209263703U (en) | 2018-10-18 | 2018-10-18 | A kind of device that Direct Air-cooled Unit exhausted spare heat is recycled to boiler supply air system |
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| Country | Link |
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| CN (1) | CN209263703U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670086A (en) * | 2021-08-13 | 2021-11-19 | 广州环投福山环保能源有限公司 | Shading wind-proof air cooling island waste incineration power plant with coupled compressed air energy storage |
-
2018
- 2018-10-18 CN CN201821693243.8U patent/CN209263703U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670086A (en) * | 2021-08-13 | 2021-11-19 | 广州环投福山环保能源有限公司 | Shading wind-proof air cooling island waste incineration power plant with coupled compressed air energy storage |
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