CN104632310B - It is a kind of to improve vacuum and the embedded hybrid system of residual heat of condensed water heat supply - Google Patents

It is a kind of to improve vacuum and the embedded hybrid system of residual heat of condensed water heat supply Download PDF

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CN104632310B
CN104632310B CN201510067313.3A CN201510067313A CN104632310B CN 104632310 B CN104632310 B CN 104632310B CN 201510067313 A CN201510067313 A CN 201510067313A CN 104632310 B CN104632310 B CN 104632310B
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heat
condensate
water
condenser
valve
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CN104632310A (en
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梁双印
高满达
王国生
梁承宇
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Beijing North Three Closes Enertech Co Ltd
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Beijing North Three Closes Enertech Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/14Combined heat and power generation [CHP]

Abstract

Vacuum and the embedded hybrid system of residual heat of condensed water heat supply and device are improved the invention discloses one kind, including turbine low pressure cylinder, turbine low pressure cylinder connects injection type condenser, turbine low pressure cylinder is provided with blow-off line, blow-off line is connected with air cooling tubes condenser, provided with cooling mixing arrangement in the steam-distributing pipe road of blow-off line and air cooling tubes condenser;Air cooling tubes condenser connects condensate tank and air extractor, condensate tank connection circulation condensate header, circulation condensate header is connected with air extractor, air extractor connects electric driven compression refrigeration system, electric driven compression refrigeration system connection photovoltaic station service joint electric supply installation, circulation condensate header, dry-type air cooler system are connected with electric driven compression refrigeration system annular, and dry-type air cooler system also connects the pipeline between the electric driven compression refrigeration system and the circulation condensate header simultaneously.

Description

It is a kind of to improve vacuum and the embedded hybrid system of residual heat of condensed water heat supply
Technical field
The present invention relates to thermodynamic cycle technical field, it particularly relates to which a kind of improve vacuum and residual heat of condensed water heat supply Embedded hybrid system.
Background technology
With China's economy flourish and a series of landing of relevant policies is implemented, based on manufacturing industry it is light, Heavy industry industry chain (supply chain) north extends, in areas such as the North China headed by Jing-jin-ji region, old industrial bases northeast and northwests Huge electrical energy demands market has been expedited the emergence of, it is northern also for ensureing to meet the every profession and trade utilization of power demand headed by industry The security reliability of Area Inhabitants electricity consumption, while northern area resident's winter heating demand can be taken into account, country is between nearly 20 years In the economic developments such as the Shanxi headed by the Inner Mongol, Shaanxi, Hebei, three provinces in the northeast of China more prominent province, its coal etc. is relied on Large quantities of Coal-fired groups have been built in the advantage of the energy, investment.Due to northern area climatic characteristic and shortage of water resources present situation, The fired power generating unit of numerous quantity uses direct air cooled condenser, to using water wisely.
But with constantly putting into operation for Direct Air-Cooled fired power generating unit, the problem of summer vacuum is poor gradually reveals.It is directly empty Cold group uses air cooling tubes condenser, and its principle is:Steam is exchanged heat by air cooling tubes condenser heat-exchanging tube bundle and environment, heat transfer Driving force is the temperature difference that environment temperature exists with condensing vapour, and summer environment temperature height can cause heat transfer, and smooth, air cooling does not coagulate In vapour device pressure rise and pressure oscillation is frequent, vacuum up to more than 35kPa, have a strong impact on unit operation security and economy Property.
According to the second law of thermodynamics, feedwater is heated using high-grade steam can cause the capacity loss that largely does work, and make Wasted into huge energy.And most of northern area Direct Air-cooled Units at present, winter all bears the task of oriented resident's heat supply, Drawn gas usually using steam turbine stage casing, to heat heat supply network water.This will cause the capacity loss that largely does work, and net coal consumption rate increases, It is opposite with the current big policy of national energy-saving emission reduction from.
Therefore, a kind of for improving air cooled fossil fired unit vacuum and winter Heat Supplying with Low Vacuum combined unit, raising is developed And maintain the vacuum of unit, it is ensured that unit operation economy, improves unit energy-conserving and environment-protective level, becomes and need solution badly for professional Certainly the problem of.
The content of the invention
For the above-mentioned technical problem in correlation technique, the present invention proposes a kind of raising vacuum and residual heat of condensed water heat supply Embedded hybrid system, it is possible to increase air cooled fossil fired unit vacuum and winter Heat Supplying with Low Vacuum, improves and maintains the vacuum of unit, Ensure unit operation economy, improve unit energy-conserving and environment-protective level.
To realize above-mentioned technical purpose, the technical proposal of the invention is realized in this way:
It is a kind of to improve vacuum and the embedded hybrid system of residual heat of condensed water heat supply, including turbine low pressure cylinder, the vapour Turbine low pressure (LP) cylinder lower end is connected with injection type condenser, and turbine low pressure cylinder is provided with the blow-off line matched, described Blow-off line is connected with air cooling tubes condenser, meanwhile, set in the steam-distributing pipe road of the blow-off line and the air cooling tubes condenser It is equipped with cooling mixing arrangement;The air cooling tubes condenser lower end is connected with the condensate tank and air extractor matched, wherein, it is described Condensate tank is connected with circulation condensate header, and the circulation condensate header is connected with the air extractor, the pumping The other end of device is connected with electric driven compression refrigeration system, and the electric driven compression refrigeration system is connected with photovoltaic station-service Electricity Federation Electric supply installation is closed, the circulation condensate header is connected with the electric driven compression refrigeration system, and the electric drive pressure Compressor in compressing refrigeration system is also associated with photovoltaic station service joint electric supply installation, and the photovoltaic station service combines electric supply installation Evaporator in the electric driven compression refrigeration system is connected with by dry-type air cooler system, described evaporator is with following Block valve three is provided with pipeline between ring condensate header;The dry-type air cooler system also connects the electricity simultaneously Drive the pipeline between compression refrigerating system and block valve three, and the air extractor also with the dry-type air cooler system System connection;The electric driven compression refrigeration system mixes dress by water circulating pump one, block valve two, regulating valve two with the cooling Put and be connected, the water circulating pump one is connected with the injection type condenser, and the injection type condenser is also by following Ring water pump two, regulating valve four are connected with the circulation condensate header, and the water circulating pump two is connected with the condensate tank Connect, in addition, the circulation condensate header also passes sequentially through block valve four, condensate transfer pump, regulating valve nine and is connected with heat supply network First pipeline of heater, the first pipeline of the heat exchangers for district heating after heat exchangers for district heating heat release with the injection type condenser It is connected, meanwhile, heat user backwater connects the second pipeline of heat exchangers for district heating, and the pipeline of heat exchangers for district heating second is connected with point The pipeline all the way of peak heater, low section of another road pipeline one end and the steam turbine of the peak load calorifier, which draws gas, to be connected, the point The other end of another road pipeline of peak heater is connected with the condensate tank, and the condensate tank also has and the heat supply network Heater is connected to form the 3rd pipeline in loop, after heat user backwater is heated through heat exchangers for district heating one-level, enters the point In peak heater, low section of steam turbine draws gas to be added in the peak load calorifier to two grades of the heat user backwater progress heated by one-level Water is condensed into after heat to be delivered in condensate tank, and heat user backwater reaches heating demand after two grades are heated, and conveys backheat Net, to heat user heat supply, circulation condensate one-level in heat exchangers for district heating heats heat user backwater in circulation condensate header, changes Circulation condensate after heat drop temperature is entered in the injection type condenser by regulating valve ten, participates in heat transfer process next time.
Further, the air extractor includes the water-ring vacuum pump being connected with air cooling tubes condenser, the liquid-ring type The left and right ends of vavuum pump are connected to moisture trap and cooler, and the moisture trap and the cooler phase Connection.
Further, the electric driven compression refrigeration system includes the evaporator being connected with the cooler, the steaming One end of hair device is connected with compressor and condenser in turn, and the condenser is connected by choke valve with the evaporator.
Further, butterfly control valve one is connected between the turbine low pressure cylinder and the injection type condenser;Institute State and be connected with condensate pump, regulating valve six and regulating valve 11 between condensate tank and the circulation condensate header in turn;Institute State and be connected with regulating valve one, block valve one and water circulating pump between air extractor and the electric driven compression refrigeration system in turn One;The circulation condensate header is also connected with regulating valve five, water pump one in turn with the electric driven compression refrigeration system, cut Disconnected valve three, regulating valve three and block valve seven are connected with turn between the water circulating pump one and the injection type condenser, described It is connected with block valve five and regulating valve eight between water circulating pump two and the condensate tank in turn;The regulating valve three and block valve Pipeline between seven also passes through the pipeline described in block valve eight connectivity between injection type condenser and the water circulating pump two.
Further, regulating valve ten is connected between the heat exchangers for district heating and the injection type condenser, meanwhile, it is described Water pump two is also associated between heat exchangers for district heating and the peak load calorifier;The peak load calorifier and the condensate tank it Between be connected with water pump three, be also connected with condensate pump, regulating valve between the condensate tank and the heat exchangers for district heating in turn Six and regulating valve seven, block valve six is connected between the heat exchangers for district heating and the condensate tank.
Beneficial effects of the present invention:The present invention can reduce working medium specific volume, optimization air cooling tubes condenser end heat exchange effect rapidly Really;Strengthen unit cooling capacity, greatly improve unit vacuum;Valuable water resources can be recycled, with the small, benefit of investment Height, characteristics of compact layout, the advantages of take up an area small, improve environmental protection and economy, it is to avoid acting capacity loss, fully recycle and condense Water waste heat or exhausted spare heat, greatly reduce Turbine Cold Junction loss, greatly improve generatine set heat efficiency and economy, reduce unit coal Consumption.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings Obtain other accompanying drawings.
Fig. 1 is raising vacuum described according to embodiments of the present invention and the embedded hybrid system of residual heat of condensed water heat supply Connection diagram.
In figure:
1st, turbine low pressure cylinder;2nd, mixing arrangement is cooled down;3rd, blow-off line;4th, air cooling tubes condenser;5th, water-ring vacuum pump; 6th, moisture trap;7th, cooler;8th, condensate tank;9th, evaporator;10th, compressor;11st, condenser;12nd, choke valve;13rd, follow Ring water pump one;14th, block valve one;15th, regulating valve one;16th, block valve two;17th, regulating valve two;18th, regulating valve three;19th, spray Formula condenser;20th, butterfly control valve one;21st, water circulating pump two;22nd, regulating valve four;23rd, condensate header is circulated;24th, adjust Valve five;25th, water pump one;26th, block valve three;27th, block valve four;28th, regulating valve six;29th, regulating valve seven;30th, block valve five; 31st, regulating valve eight;32nd, condensate transfer pump;33rd, regulating valve nine;34th, heat exchangers for district heating;35th, condensate pump;36th, regulating valve Ten;37th, water pump two;38th, peak load calorifier;39th, water pump three;40th, photovoltaic station service joint electric supply installation;41st, regulating valve 11;42nd, block valve six;43rd, block valve seven;44th, block valve eight;47th, dry-type air cooler system.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belongs to what the present invention was protected Scope.
As shown in figure 1, improving vacuum and the embedded hybrid system of residual heat of condensed water heat supply, bag the invention provides a kind of Turbine low pressure cylinder 1 is included, the lower end of turbine low pressure cylinder 1 is connected with injection type condenser 19, and turbine low pressure cylinder 1 Provided with the blow-off line 3 matched, the blow-off line 3 is connected with air cooling tubes condenser 4, meanwhile, the blow-off line 3 and described Cooling mixing arrangement 2 is provided with the steam-distributing pipe road of air cooling tubes condenser 4;The lower end of air cooling tubes condenser 4 is connected with phase The condensate tank 8 and air extractor matched somebody with somebody, wherein, the condensate tank 8 is connected with circulation condensate header 23, and the circulation condenses Water header 23 is connected with the air extractor, and the other end of the air extractor is connected with electric driven compression refrigeration system, institute State electric driven compression refrigeration system and be connected with photovoltaic station service joint electric supply installation 40, the circulation condensate header 23 also with institute Electric driven compression refrigeration system is stated to be connected, and the compressor 10 in the electric driven compression refrigeration system is also associated with photovoltaic Station service combines electric supply installation 40, and the photovoltaic station service joint electric supply installation 40 is connected by dry-type air cooler system 47 There are the evaporator 9 in the electric driven compression refrigeration system, the pipeline between described evaporator 9 and circulation condensate header 23 On be provided with block valve 3 26, and the dry-type air cooler system 47 also connects the electric driven compression refrigeration system simultaneously Unite and the pipeline between the block valve 3 26, and the air extractor also connects with the dry-type air cooler system 47 Connect;The electric driven compression refrigeration system is mixed by water circulating pump 1, block valve 2 16, regulating valve 2 17 with the cooling Device 2 is connected, and the water circulating pump 1 is connected with the injection type condenser 19, and the injection type condenser 19 Also be connected by water circulating pump 2 21, regulating valve 4 22 with the circulation condensate header 23, the water circulating pump 2 21 with The condensate tank 8 is connected, in addition, the circulation condensate header 23 also passes sequentially through block valve 4 27, condensate conveying Pump 32, regulating valve 9 33 are connected with the first pipeline of heat exchangers for district heating 34, and the first pipeline of the heat exchangers for district heating 34 is through heat supply network It is connected after heater heat release with the injection type condenser 19, meanwhile, the second of heat user backwater connection heat exchangers for district heating 34 Pipeline, the pipeline of heat exchangers for district heating 34 second is connected with the pipeline all the way of peak load calorifier 38, the peak load calorifier 38 Low section of another road pipeline one end and steam turbine, which draws gas, to be connected, the other end of another road pipeline of the peak load calorifier 38 with it is described Condensate tank 8 is connected, and the condensate tank 8 also has the 3rd pipe that loop is connected to form with the heat exchangers for district heating 34 Road, after heat user backwater is heated through the one-level of heat exchangers for district heating 34, is entered in the peak load calorifier 38, low section of steam turbine draws gas Water is condensed into after the heat user backwater that one-level is heated carries out two grades of heating be delivered to condensation in 38 pairs of the peak load calorifier In water tank 8, and heat user backwater reaches heating demand after two grades are heated, and is transmitted back to heat supply network, and to heat user heat supply, circulation is solidifying Bear water and condensate one-level heating heat user backwater in heat exchangers for district heating 34, the circulation condensate after heat exchange cooling are circulated in header Entered by regulating valve 10 in the injection type condenser 19, participate in heat transfer process next time.
In one embodiment, the air extractor includes the water-ring vacuum pump 5 being connected with air cooling tubes condenser 4, institute The left and right ends for stating water-ring vacuum pump 5 are connected to moisture trap 6 and cooler 7, and the moisture trap 6 with The cooler 7 is connected.
In one embodiment, the electric driven compression refrigeration system includes the evaporator being connected with the cooler 7 9, one end of the evaporator 9 is connected with compressor 10 and condenser 11 in turn, and the condenser 11 passes through choke valve 12 and institute Evaporator 9 is stated to be connected.
In one embodiment, it is connected with butterfly control between the turbine low pressure cylinder 1 and the injection type condenser 19 Valve 1 processed;Condensate pump 35, regulating valve six are connected with turn between the condensate tank 8 and the circulation condensate header 23 28 and regulating valve 11;Regulating valve one is connected with turn between the air extractor and the electric driven compression refrigeration system 15th, block valve 1 and water circulating pump 1;The circulation condensate header 23 and the electric driven compression refrigeration system also according to It is secondary to be connected with regulating valve 5 24, water pump 1, block valve 3 26, the water circulating pump 1 and the injection type condenser 19 Between be connected with regulating valve 3 18 and block valve 7 43 in turn, between the water circulating pump 2 21 and the condensate tank 8 successively It is connected with block valve 5 30 and regulating valve 8 31;Pipeline between the regulating valve 3 18 and block valve 7 43 also passes through block valve Pipeline between the 8 44 connection injection type condensers 19 and the water circulating pump 2 21.
In one embodiment, it is connected with regulating valve ten between the heat exchangers for district heating 34 and the injection type condenser 19 36, meanwhile, it is also associated with water pump 2 37 between the heat exchangers for district heating 34 and the peak load calorifier 38;The spike heating Water pump 3 39 is connected between device 38 and the condensate tank 8, between the condensate tank 8 and the heat exchangers for district heating 34 also Be connected with condensate pump 35, regulating valve 6 28 and regulating valve 7 29 in turn, the heat exchangers for district heating 34 and the condensate tank 8 it Between be connected with block valve 6 42.
Understand for convenience the present invention above-mentioned technical proposal, below by way of in specifically used mode to the present invention it is above-mentioned Technical scheme is described in detail.
When specifically used, according to raising vacuum of the present invention and the embedded hybrid system of residual heat of condensed water heat supply, Condensate obtained by being condensed in the injection type condenser 19 and the circulation condensate for participating in circulating converge into circulation condensate, and lead to 2 21 points of two-way of water circulating pump are crossed, block valve 5 30, regulation are passed sequentially through all the way for the condensate with the quality such as institute condensing vapour Valve 8 31 is entered in the condensate tank 8, and another road is that cycles left condensate enters the circulation condensate header 23 In, the circulation condensate needed for heat supply is entered in the heat exchangers for district heating 34 by condensate transfer pump 32, and the heat supply network adds Hot device 34 is surface-type heat exchanger, and circulation condensate is heated in the heat exchangers for district heating 34 to heat user backwater one-level, heat release Circulation condensate afterwards is entered in the injection type condenser 19 all the way by being divided into two-way after regulating valve 10, and another road connects It is connected on the pipeline between water circulating pump 1 and block valve 1, constitutes closed cycle.The heat user heated by one-level is returned Water is entered in the peak load calorifier 38 by the water pump 2 37, and the peak load calorifier 38 is surface-type heat exchanger, Low section of steam turbine draws gas in the peak load calorifier 38 to condensing into water after the heating of two grades of heat user backwater, and is taken by described Water pump 3 39 is entered in the condensate tank 8, and the heat user backwater after two grades are heated is conveyed by heat supply network to heat user.
It is noted that the electric driven compression refrigeration system is fortune arranged side by side with the dry-type air cooler system OK, and dry-type air cooler system is Major Cooling Methods, i.e., water is main in the dry type in described condensate header Cooled down in aerial cooler system, the electric pump driving refrigerating plant is radiator cooler.Specifically, circulation condensate header The higher water of temperature is entered in the heat-exchanging tube bundle of dry-type air cooler system in 23, and by dry-type air cooler system System, the forcing ambient air heat convection that blower fan drives.Use, imitated with the technology for being readily available air in north water deficit area Really, and water consumption is not needed to be cooled down, atmospheric corrosion is low, is not required to special snaking measure, moreover, and it runs and tieed up Shield expense is also very low.
Cooling water comes from the electric driven compression refrigerating plant and dry-type air cooler system in the cooler 7, Separating obtained water is partly into the water-ring vacuum pump 5 after the cooler 7 cooling in the moisture trap 6 Air intake duct, make will enter the water-ring vacuum pump 5 gas in condensable partial condensation get off, to improve the water The exhaust capacity of ring vacuum pumps 5;Another part is directly entered the pump housing of the water-ring vacuum pump 5, is used as the benefit of working water Water-filling, the work for stablizing the water-ring vacuum pump 5 is exerted oneself.
Water main cooling, electric driven compression in dry-type air cooler system in the circulation condensate header 23 Refrigeration system is secondary to be cooled down in electric driven compression refrigeration system as supplement heat rejecter means, and cooling gained cooling water temperature is low In environment temperature, on the one hand entered by pipeline in the injection type condenser 19, on the other hand use the cooling Water mixing device enters turbine low pressure cylinder to the blow-off line 3 of air cooling system and the air cooling tubes condenser steam of air cooling tubes condenser 4 In distribution duct, with the hybrid for no reason poor contact heat-exchanging of turbine discharge, the vacuum of condenser can be obviously improved.
The cooling mixing arrangement includes cooling water conveyance conduit and is arranged on some on the cooling water conveyance conduit Cooling water nozzle, wherein, the cooling water nozzle is arranged on blow-off line and the distribution of air cooling tubes condenser steam of air cooling tubes condenser 4 Insides of pipes, the cooling water conveyance conduit is fixed on the blow-off line and sky of the turbine low pressure cylinder 1 and air cooling tubes condenser 4 The outside in cold condenser steam-distributing pipe road.
Wherein, when summer putting into operation raising vacuum system and device, the shut-off of block valve 4 27, block valve 6 42 are turned off, and are coagulated Waste heat for supplying system is born water to be bypassed.When putting into operation residual heat of condensed water heating system in winter, taken not according to vacuum system is improved Same anti-corrosion measure is divided into two kinds of situations, and situation one is:When improving vacuum system using filling with inert gas mode anti-corrosion, improve Each device included by vacuum system is stopped transport, i.e., block valve 1 is turned off, block valve 2 16 is turned off, block valve 3 26 is turned off, Block valve 5 30 is turned off, and is improved vacuum system and is bypassed;Situation two is:It is anti-using the low discharge method of operation when improving vacuum system When rotten, each block valve is open state, and each device included by raising vacuum system is normally run.
The water circulating pump 1, water circulating pump 2 21, water pump 1, water pump 2 37, water pump 3 39, condensate Delivery pump 32, the dragging motor of condensate pump 35 are all the double-speed motor matched.In summer, the double-speed motor is severe Top gear is operated in when environment, unit high load capacity, to improve the water circulating pump 1, the water circulating pump 2 21, described take Water pump 1, it is ensured that the preferable vacuum of the air cooling tubes condenser 4, the double-speed motor operates in low speed in performing low-load running of machine set State, and the flow restriction control effect in the corresponding regulating valve on pipeline is equipped with, it can be reduced with effectively save station service to energy Source is additionally consumed, and cost-effective;When running in the winter time, the increase of condensing vapour amount, the circulation in the injection type condenser Water pump 1, water circulating pump 2 21, water pump 1, water pump 2 37, water pump 3 39, condensate transfer pump 32, condensate Pump 35 needs to select corresponding speed of service shelves according to working condition, to ensure the normal operation of residual heat of condensed water heating system, and Obtain the energy-saving effect during preferable runing adjustment.
Wherein, the heat exchangers for district heating 34 is surface-type heat exchanger, and circulation condensate is in institute in the circulating cooling water tank State one-level in heat exchangers for district heating 34 and heat heat user backwater, the circulation condensate after heat exchange cooling is entered by regulating valve 10 In the injection type condenser 19, heat transfer process next time is participated in.
Heat user backwater is entered described after the one-level of heat exchangers for district heating 34 heating by the water pump 2 37 In peak load calorifier 38, the peak load calorifier 38 is surface-type heat exchanger, and low section of steam turbine draws gas in the peak load calorifier 38 pairs condense into water after the heat user backwater that one-level is heated carries out two grades of heating and are delivered to condensate by water pump 3 39 In case 8, and heat user backwater reaches heating demand after two grades are heated, and heat supply network is transmitted back to, to heat user heat supply.
Wherein, the part of water four of the circulation condensate header 23 a, part comes from the condensate tank 8, a part Carry out the cooling water of heating of being absorbed heat in the cooler in the comfortable air extractor, a part supplements water, a part from demineralized water Condensate from injection type condenser 19.
For the cooling mixing arrangement, its specific operation principle is as follows:Cooling water passes through the cooling water delivery pipe Behind road, the steam turbine is injected to the blow-off line and air cooling tubes condenser of the air cooling tubes condenser 4 by the cooling water nozzle In steam-distributing pipe road, on the one hand, can reduce the rapid specific volume of steam, strengthen steam negotiability;On the other hand, cool down Water is rapid after spraying into accelerate steam condensation, and the overall vacuum of unit is greatly improved.
In summary, by means of the above-mentioned technical proposal of the present invention, the present invention is by increasing a set of injection type condenser system newly System, cooling mixing arrangement, dry-type air cooler system and electric driven compression refrigeration system, can make turbine low pressure cylinder steam discharge Combination cooling water is directly contacted, it is rapid to reduce working medium specific volume, promote flowing of the steam in air condenser system, especially optimize Air cooling tubes condenser end heat transfer effect;Low pressure (LP) cylinder steam discharge is shunted using injection type condenser, strengthens unit cooling capacity, is relied on The advantage of direct hybridization heat exchange, the effect of big film-cooled heat is obtained with smaller occupation of land, unit vacuum is greatly improved;When direct empty Cooling system will cause the frequent fluctuation of unit vacuum operationally by environment wind disturbance, and the present apparatus improves vacuum by newly-increased System and device, add the largely recirculated cooling water conduct with very big thermal inertia and thermal capacitance in original direct air cooling system Stable working medium, when external environment is unstable, the recirculated water for participating in circulating in the present apparatus can buffer Direct Air-Cooled condensing The back-pressure surges that device Heat exchanger is caused, while raising vacuum is obtained, can play a part of stable vacuum;The present invention can To maintain the stable state under vacuum, the frequent variable working condition action of blower fan is reduced, its safety in operation is improved, it is ensured that air cooling tubes condenser Normal operation, effectively raises the stability and reliability of plant running, extends the service life of device;It can also carry simultaneously High vacuum system, the purpose for improving unit vacuum is reached using enclosed cooling water circulation, different from using the cooling of wet type spike Tower, can recycle valuable water resources, it is to avoid the great lot of water resources that wet cooling tower is caused is wasted, and suit very much northern China's electricity Unit uses the original intention of Direct Air-Cooled, has the advantages that the small, high efficiency of investment, characteristics of compact layout, occupation of land are small, passes through cooling water with steaming Vapour directly mixing rolls up the purpose of heat exchange area to realize, can exchange larger economic benefit for small investment and improve true Empty ability, Air-cooled Unit vacuum is improved by closed cycle, is not required to outer spray demineralized water to strengthen air cooling tubes condenser heat exchange, energy A large amount of valuable water resources are saved to be built up in the Air-cooled Unit of north water deficit area, its environmental protection and economy is improved, is conducive to market Popularization can also pass through a kind of residual heat of condensed water heating system and device with application, it is to avoid usual unit uses extracted steam from turbine To directly heat the waste for the high-quality steam that heat user backwater is caused, also avoid using the steam heating that can still generate electricity And the acting capacity loss caused;The present invention is drawn gas with low section of steam turbine carrys out spike heating heat user backwater, can accomplish full On the premise of sufficient heat demand, high-grade electric energy is obtained using steam as far as possible, steam direct heating is fully avoided and makes Into a large amount of acting capacity losses;It is noted that heating heat user using condensate in the condenser without generating capacity Backwater, fully recycles residual heat of condensed water or exhausted spare heat, greatly reduces Turbine Cold Junction loss, greatly improves unit thermal effect Rate and economy, reduce unit coal consumption.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (5)

1. a kind of improve vacuum and the embedded hybrid system of residual heat of condensed water heat supply, including turbine low pressure cylinder (1), its feature It is, turbine low pressure cylinder (1) lower end is connected with injection type condenser (19), and turbine low pressure cylinder (1) is provided with The blow-off line (3) matched, the blow-off line (3) is connected with air cooling tubes condenser (4), meanwhile, the blow-off line (3) and Cooling mixing arrangement (2) is provided with the steam-distributing pipe road of the air cooling tubes condenser (4);Air cooling tubes condenser (4) lower end The condensate tank (8) and air extractor matched is connected with, wherein, the condensate tank (8) is connected with circulation condensate header (23), the circulation condensate header (23) is connected with the air extractor, and the other end of the air extractor is connected with electricity Compression refrigerating system is driven, the electric driven compression refrigeration system is connected with photovoltaic station service joint electric supply installation (40), described Circulation condensate header (23) is connected with the electric driven compression refrigeration system, and in the electric driven compression refrigeration system Compressor (10) be also associated with photovoltaic station service joint electric supply installation (40), photovoltaic station service joint electric supply installation (40) The evaporator (9) in the electric driven compression refrigeration system, described steaming are connected with by dry-type air cooler system (47) Block valve three (26) is provided with pipeline between hair device (9) and circulation condensate header (23);The dry-type air cooler System (47) also connects the pipeline between the electric driven compression refrigeration system and block valve three (26), and the pumping simultaneously Device is also connected with the dry-type air cooler system (47);The electric driven compression refrigeration system passes through water circulating pump one (13), block valve two (16), regulating valve two (17) are connected with the cooling mixing arrangement (2), the water circulating pump one (13) It is connected with the injection type condenser (19), and the injection type condenser (19) also passes through water circulating pump two (21), tune Section valve four (22) is connected with the circulation condensate header (23), the water circulating pump two (21) and the condensate tank (8) It is connected, in addition, the circulation condensate header (23) also passes sequentially through block valve four (27), condensate transfer pump (32), adjusted Section valve nine (33) is connected with the first pipeline of heat exchangers for district heating (34), and the first pipeline of the heat exchangers for district heating (34) adds through heat supply network It is connected after hot device heat release with the injection type condenser (19), meanwhile, the of heat user backwater connection heat exchangers for district heating (34) Two pipelines, the pipeline of heat exchangers for district heating (34) second is connected with the pipeline all the way of peak load calorifier (38), the spike heating Low section of another road pipeline one end and the steam turbine of device (38), which draws gas, to be connected, another road pipeline of the peak load calorifier (38) it is another One end is connected with the condensate tank (8), and the condensate tank (8) also has the structure that is connected with the heat exchangers for district heating (34) Into the 3rd pipeline in loop, after heat user backwater is heated through heat exchangers for district heating (34) one-level, the peak load calorifier is entered (38) in, low section of steam turbine draws gas to be added in the peak load calorifier (38) to two grades of the heat user backwater progress heated by one-level Water is condensed into after heat to be delivered in condensate tank (8), and heat user backwater reaches heating demand after two grades are heated, and is transmitted back to Heat supply network, to heat user heat supply, circulation condensate one-level in heat exchangers for district heating (34) heats heat user in circulation condensate header Backwater, the circulation condensate after heat exchange cooling is entered in the injection type condenser (19) by regulating valve ten (36), is participated in Heat transfer process next time.
2. a kind of raising vacuum according to claim 1 and the embedded hybrid system of residual heat of condensed water heat supply, its feature It is, the air extractor includes the water-ring vacuum pump (5) being connected with air cooling tubes condenser (4), the water-ring vacuum pump (5) left and right ends are connected to moisture trap (6) and cooler (7), and the moisture trap (6) with it is described cold But device (7) is connected.
3. a kind of raising vacuum according to claim 2 and the embedded hybrid system of residual heat of condensed water heat supply, its feature It is, the electric driven compression refrigeration system includes the evaporator (9) being connected with the cooler (7), the evaporator (9) One end be connected with compressor (10) and condenser (11) in turn, the condenser (11) passes through choke valve (12) and the evaporation Device (9) is connected.
4. a kind of raising vacuum according to claim 1 and the embedded hybrid system of residual heat of condensed water heat supply, its feature It is, butterfly control valve one (20) is connected between the turbine low pressure cylinder (1) and the injection type condenser (19);It is described Be connected with turn between condensate tank (8) and circulation condensate header (23) condensate pump (35), regulating valve six (28) and Regulating valve 11 (41);Regulating valve one is connected with turn between the air extractor and the electric driven compression refrigeration system (15), block valve one (14) and water circulating pump one (13);The circulation condensate header (23) is freezed with the electric driven compression System is also connected with regulating valve five (24), water pump one (25), block valve three (26), the water circulating pump one (13) and institute in turn State and be connected with regulating valve three (18) and block valve seven (43), the water circulating pump two (21) in turn between injection type condenser (19) Block valve five (30) and regulating valve eight (31) are connected with turn between the condensate tank (8);The regulating valve three (18) with Pipeline between block valve seven (43) also connects the injection type condenser (19) and the recirculated water by block valve eight (44) Pipeline between pump two (21).
5. a kind of raising vacuum according to claim 1 and the embedded hybrid system of residual heat of condensed water heat supply, its feature It is, regulating valve ten (36) is connected between the heat exchangers for district heating (34) and the injection type condenser (19), meanwhile, it is described Water pump two (37) is also associated between heat exchangers for district heating (34) and the peak load calorifier (38);The peak load calorifier (38) Be connected with water pump three (39) between the condensate tank (8), the condensate tank (8) and the heat exchangers for district heating (34) it Between be also connected with condensate pump (35), regulating valve six (28) and regulating valve seven (29), the heat exchangers for district heating (34) and institute in turn State and be connected with block valve six (42) between condensate tank (8).
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3613725A1 (en) * 1986-04-23 1987-10-29 Gamal El Din Dipl Ing Nasser METHOD AND DEVICE FOR GENERATING ELECTRICITY
CN102331110A (en) * 2011-08-31 2012-01-25 北京中科华誉能源技术发展有限责任公司 Regional heating, cooling and power combined energy system and method based on absorption heat exchange
CN102519069A (en) * 2011-12-08 2012-06-27 北京中科华誉能源技术发展有限责任公司 Multi-effect cascade jet type heat exchange based exhaust steam waste heat recovering and heat and power jointly producing system
CN202768090U (en) * 2012-09-18 2013-03-06 北京创时能源有限公司 Recovery system of dead steam waste heat
CN204703967U (en) * 2015-02-09 2015-10-14 北京北方三合能源技术有限公司 A kind of raising vacuum and the embedded combined system of residual heat of condensed water heat supply

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3586542B2 (en) * 1997-06-04 2004-11-10 三菱重工業株式会社 Multi-shaft combined cycle power plant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3613725A1 (en) * 1986-04-23 1987-10-29 Gamal El Din Dipl Ing Nasser METHOD AND DEVICE FOR GENERATING ELECTRICITY
CN102331110A (en) * 2011-08-31 2012-01-25 北京中科华誉能源技术发展有限责任公司 Regional heating, cooling and power combined energy system and method based on absorption heat exchange
CN102519069A (en) * 2011-12-08 2012-06-27 北京中科华誉能源技术发展有限责任公司 Multi-effect cascade jet type heat exchange based exhaust steam waste heat recovering and heat and power jointly producing system
CN202768090U (en) * 2012-09-18 2013-03-06 北京创时能源有限公司 Recovery system of dead steam waste heat
CN204703967U (en) * 2015-02-09 2015-10-14 北京北方三合能源技术有限公司 A kind of raising vacuum and the embedded combined system of residual heat of condensed water heat supply

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