CN107420138A - Turbo-generator Set novel energy-conserving system and method - Google Patents

Turbo-generator Set novel energy-conserving system and method Download PDF

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Publication number
CN107420138A
CN107420138A CN201710649496.9A CN201710649496A CN107420138A CN 107420138 A CN107420138 A CN 107420138A CN 201710649496 A CN201710649496 A CN 201710649496A CN 107420138 A CN107420138 A CN 107420138A
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CN
China
Prior art keywords
heat supply
water
supply network
electricity
regulating valve
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Pending
Application number
CN201710649496.9A
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Chinese (zh)
Inventor
王凤良
高岩松
张贵强
赵凯
杨丹
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Datang Northeast Electric Power Test and Research Institute Co Ltd
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Datang Northeast Electric Power Test and Research Institute Co Ltd
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Priority to CN201710649496.9A priority Critical patent/CN107420138A/en
Publication of CN107420138A publication Critical patent/CN107420138A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10Adaptations for driving, or combinations with, electric generators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K17/00Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/02Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
    • F01K17/025Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic in combination with at least one gas turbine, e.g. a combustion gas turbine
    • 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]
    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Eletrric Generators (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The present invention relates to a kind of Turbo-generator Set novel energy-conserving system and method, system includes:Described Turbo-generator Set includes main steam generating set, back pressure type small turbine generating set, heat supply network peak load calorifier, source pump and cooling tower systems, the water inlet of first condenser connects cooling tower systems by main frame recirculated water water supply line, the main frame recirculated water water supply line is provided with water supply regulating valve, the delivery port of first condenser connects cooling tower systems by main frame recirculated water water return pipeline, and the main frame recirculated water water return pipeline is provided with backwater regulating valve;Heat supply network backwater input heat pump machine is once heated, then heat supply network supplies water carries out reheating by the delivery pipeline of the described source pump of connection and heat supply network peak load calorifier into the heat supply network peak load calorifier, last heat supply network supplies water to be exported by the heat supply network peak load calorifier, and the delivery pipeline is provided with hot water water supply regulating valve.

Description

Turbo-generator Set novel energy-conserving system and method
Technical field
Present invention relates particularly to a kind of Turbo-generator Set novel energy-conserving system and method.
Background technology
Energy-saving and emission-reduction requirement dynamics is continuously increased recently as country, the popularization of various energy-conserving and emission-cutting technologies should With.In addition, the system engineering that Thermal Power Station is large-scale as one, includes numerous slewings, lighting installation, communications service Deng consuming substantial amounts of station service daily, the station service power consumption rate of some power plant is up to 10% or so.Will according to the scheduling of grid company Ask, the electricity of generator outlet can just serve power network after subtracting station service.
In addition, as country is continuously increased to energy-saving and emission-reduction requirement dynamics, the popularization and application of various energy-conserving and emission-cutting technologies, Circulating water afterheat heat supply process is a kind of emerging heat supply process, in addition, existing for the cascaded utilization of energy of Turbo-generator Set Extensive development has also been obtained in recent years, has added the electricity volume of retrofitted unit, improves the economic benefit of Thermal Power Station.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of Turbo-generator Set novel energy-conserving system and side Method, between non-heating period, independent condenser is set for back pressure type small turbine, and main steam generating set common recycle water system, During heat supply, source pump is set, is drawn gas with the heating of main steam generating set and drives source pump, absorb main turbine generator The circulating water afterheat of unit, back pressure type small steam turbine exhaust steam are directly discharged into adopting for heat supply network peak load calorifier and main steam generating set The warm common input spike heat exchangers for district heating that draws gas, reaches energy-saving purpose;Meanwhile by the basis of Turbo-generator Set On, increase provides the small turbine generator of station service, and then it is that electricity power enterprise creates more economic effects to increase electricity volume Benefit.
Turbo-generator Set novel energy-conserving system of the present invention, including:Described Turbo-generator Set generates electricity including main steam Unit, back pressure type small turbine generating set, heat supply network peak load calorifier, source pump and cooling tower systems, wherein the master Turbo-generator Set includes senior middle school, the cylinder pressure being coaxially disposed, low pressure (LP) cylinder, main generator, high, intermediate pressure cylinder the venthole and low The air intake of cylinder pressure is connected by the first gas pipeline;The high, venthole of intermediate pressure cylinder and back pressure type small turbine enter vapour Mouth passes through the second gas pipeline and connected;The air intake of the high, venthole of intermediate pressure cylinder and heat supply network peak load calorifier passes through the 3rd Gas pipeline connects;The high, venthole of intermediate pressure cylinder is connected with the air intake of source pump by the 4th gas pipeline;
The back pressure type small turbine drives station-service electric generator, and described main generator, station-service electric generator are electric respectively Station service electrical system is connected, described main generator, station-service electric generator are provided with contactor between station service electrical system respectively;
The low pressure (LP) cylinder connects the first condenser, and the back pressure type small turbine connects the second condensing by condensing delivery pipe Device, the condensing conveyance conduit are provided with condensing regulating valve, and the back pressure type small turbine passes through afterheat steam pipeline communication heat Net peak load calorifier, the vapours pipeline are provided with afterheat steam regulating valve;
The water inlet of first condenser connects cooling tower systems by main frame recirculated water water supply line, and the main frame follows Ring water water supply line is provided with water supply regulating valve, and the delivery port of first condenser is connected by main frame recirculated water water return pipeline Cooling tower systems, the main frame recirculated water water return pipeline are provided with backwater regulating valve;
The recirculated water influent side and water outlet side of source pump are connected with cooling tower systems respectively, the recirculated water in source pump The circulating backwater exported for the first described condenser;Heat supply network backwater input heat pump machine is once heated, and then heat supply network supplies water Entered by the delivery pipeline for connecting described source pump and heat supply network peak load calorifier into the heat supply network peak load calorifier Row reheating, last heat supply network supplies water to be exported by the heat supply network peak load calorifier, and the delivery pipeline supplies provided with hot water Water regulating valve;
Described the first gas pipeline, the second gas pipeline, the 3rd gas pipeline, tune is respectively equipped with the 4th gas pipeline Section into low pressure (LP) cylinder, back pressure type small turbine, heat supply network peak load calorifier, source pump displacement the first regulating valve, second Regulating valve, the 3rd regulating valve, the 4th regulating valve.
Further, second gas pipeline is additionally provided with desuperheat/pressure reducer.
Further, the main frame recirculated water water supply line is provided with major cycle water pump.
Turbo-generator Set novel energy-conserving method of the present invention, including above-mentioned system, described method include:Non-heating period Turbo-generator Set is only used for generating electricity, and is not used in heat supply, is applied not only to generate electricity in heat supply period Turbo-generator Set, is additionally operable to supply The generation mode of Turbo-generator Set is identical when heat, non-heating period generator operation and heat supply period are generated electricity, heating is run;
Wherein, non-heating period, heat supply period generation mode specifically include:
Obtain the demand electricity of Auxiliary System;
Judge the output electricity of the station-service electric generator output of the back pressure type small turbine driving, compare Auxiliary System The size of demand electricity and output electricity,
If exporting the demand electricity that electricity is more than or equal to Auxiliary System, station-service electric generator output station service electrical system institute The contactor of the electricity needed, main generator and station service electrical system is closed;
If exporting the demand electricity that electricity is less than Auxiliary System, the electricity needed for station-service electric generator output station service electrical system Amount, the insufficient section electricity of the demand electricity of Auxiliary System is supplied by main generator output electricity, and is adjusted by described second Quantity of steam in valve regulation input back pressure type small turbine;
Non-heating period, it is arranged on the 3rd gas pipeline of the described height of connection, intermediate pressure cylinder and heat supply network peak load calorifier 3rd regulating valve, be arranged on it is remaining on the afterheat steam pipeline of the described back pressure type small turbine of connection and heat supply network peak load calorifier Vapours regulating valve is closed, while is arranged on the condensing conveyance conduit of the described back pressure type small turbine of connection and the second condenser On condensing regulating valve open, the circulating backwater into cooling tower systems do not enter source pump;
Heat supply period, the recirculated water of the circulating backwater of the first described condenser as source pump, source pump by it is high, The steam of low pressure (LP) cylinder output and the steam drive of back pressure type small turbine output, are steamed by the 4th described regulating valve, waste heat Quantity of steam of the steam control valve regulation into source pump;Heat supply network backwater is after source pump once heat, into heat supply network point Peak heater carries out reheating, while enters the quantity of steam of spike heat exchangers for district heating by the described 3rd regulation valve regulation, most Heat supply network supplies water afterwards is exported by the heat supply network peak load calorifier.
By such scheme, Turbo-generator Set novel energy-conserving system and method for the present invention at least has advantages below:
1st, in heat supply period and non-heating period, by the use of retrofitted unit high pressure cylinder steam discharge as back pressure type small turbine driving Vapour source, back pressure type small turbine, which generates electricity, is incorporated to the station service electrical system of Thermal Power Station, the online of increase transformation Turbo-generator Set Electricity;
2nd, in the winter time during heat supply, absorption heat pump is set, is drawn gas with the heating of retrofitted unit and drives source pump, is absorbed The circulating water afterheat of Turbo-generator Set is transformed, reaches energy-saving purpose, small steam turbine exhaust steam is immediately discharged to heat supply network heating Device, summer operation is that small turbine sets independent condenser, with retrofitted unit common recycle water system;
3rd, peak load calorifier of the heat exchangers for district heating as heat supply network recirculated water, heating quality is ensured.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description of the drawings
Principle schematic during Fig. 1 is Turbo-generator Set novel energy-conserving system heat supply of the present invention;
Fig. 2 is principle schematic between Turbo-generator Set novel energy-conserving system non-heating period of the present invention;
1-high, intermediate pressure cylinder;2-the first regulating valve;3-low pressure (LP) cylinder;4-the first condenser;5-main generator;6-the Two regulating valves;7-back pressure type small turbine;8-the second condenser;9-station-service electric generator;10-heat supply network peak load calorifier; 11-hot water water supply regulating valve;12-the three regulating valve;13-the four regulating valve;14-source pump;15-cooling tower systems; 16-the first water supply regulating valve;17-the first backwater regulating valve;18-major cycle water pump;19-the second condenser;20-condensing Regulating valve;21-afterheat steam regulating valve.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below Example is used to illustrate the technology of the present invention, but is not limited to the scope of the present invention.
Embodiment 1
The present embodiment Turbo-generator Set novel energy-conserving system, including:Described Turbo-generator Set is sent out including main steam Group of motors, back pressure type small turbine generating set 7, heat supply network peak load calorifier 10, source pump 14 and cooling tower systems 15, its Described in main Turbo-generator Set include the senior middle school, the cylinder pressure 1 that are coaxially disposed, low pressure (LP) cylinder 3, main generator 5, the high, intermediate pressure cylinder Venthole connected with the air intake of low pressure (LP) cylinder by the first gas pipeline;The high, venthole of intermediate pressure cylinder and back pressure type are small The air intake of steam turbine is connected by the second gas pipeline;The high, venthole of intermediate pressure cylinder and heat supply network peak load calorifier 10 Air intake is connected by the 3rd gas pipeline;The high, venthole of intermediate pressure cylinder and the air intake of source pump are defeated by the 4th Vapour pipeline communication;
The back pressure type small turbine driving station-service electric generator 8, described main generator, station-service electric generator are electric respectively Station service electrical system 9 is connected, described main generator, station-service electric generator are provided with contactor between station service electrical system respectively;
The low pressure (LP) cylinder connects the first condenser 4, and the back pressure type small turbine is solidifying by condensing delivery pipe connection second Vapour device 19, the condensing conveyance conduit are provided with condensing regulating valve 20, and the back pressure type small turbine passes through afterheat steam pipeline Heat supply network peak load calorifier is connected, the vapours pipeline is provided with afterheat steam regulating valve 21;
The water inlet of first condenser connects cooling tower systems by main frame recirculated water water supply line, and the main frame follows Ring water water supply line is provided with water supply regulating valve 16, and the delivery port of first condenser is connected by main frame recirculated water water return pipeline Logical cooling tower systems, the main frame recirculated water water return pipeline are provided with backwater regulating valve 17;
The recirculated water influent side and water outlet side of source pump are connected with cooling tower systems respectively, the recirculated water in source pump The circulating backwater exported for the first described condenser;Heat supply network backwater input heat pump machine is once heated, and then heat supply network supplies water Entered by the delivery pipeline for connecting described source pump and heat supply network peak load calorifier into the heat supply network peak load calorifier Row reheating, last heat supply network supplies water to be exported by the heat supply network peak load calorifier, and the delivery pipeline supplies provided with hot water Water regulating valve 11;
Described the first gas pipeline, the second gas pipeline, the 3rd gas pipeline, tune is respectively equipped with the 4th gas pipeline Section into low pressure (LP) cylinder, back pressure type small turbine, heat supply network peak load calorifier, source pump displacement the first regulating valve 2, second Regulating valve 6, the 3rd regulating valve 12, the 4th regulating valve 13.
The main frame recirculated water water supply line is provided with major cycle water pump 18.In the present embodiment, second gas pipeline It is additionally provided with desuperheat/pressure reducer.
The present embodiment operation principle is:
Non-heating period, heat supply period generation mode is identical specifically includes:
Obtain the demand electricity of Auxiliary System;
Judge the output electricity of the station-service electric generator output of the back pressure type small turbine driving, compare Auxiliary System The size of demand electricity and output electricity,
If exporting the demand electricity that electricity is more than or equal to Auxiliary System, station-service electric generator output station service electrical system institute The contactor of the electricity needed, main generator and station service electrical system is closed;
If exporting the demand electricity that electricity is less than Auxiliary System, the electricity needed for station-service electric generator output station service electrical system Amount, the insufficient section electricity of the demand electricity of Auxiliary System is supplied by main generator output electricity, and is adjusted by described second Quantity of steam in valve regulation input back pressure type small turbine;
Non-heating period, it is arranged on the 3rd gas pipeline of the described height of connection, intermediate pressure cylinder and heat supply network peak load calorifier 3rd regulating valve, be arranged on it is remaining on the afterheat steam pipeline of the described back pressure type small turbine of connection and heat supply network peak load calorifier Vapours regulating valve is closed, while is arranged on the condensing conveyance conduit of the described back pressure type small turbine of connection and the second condenser On condensing regulating valve open, the circulating backwater into cooling tower systems do not enter source pump;
Heat supply period, the recirculated water of the circulating backwater of the first described condenser as source pump, source pump by it is high, The steam of low pressure (LP) cylinder output and the steam drive of back pressure type small turbine output, are steamed by the 4th described regulating valve, waste heat Quantity of steam of the steam control valve regulation into source pump;Heat supply network backwater is after source pump once heat, into heat supply network point Peak heater carries out reheating, while enters the quantity of steam of spike heat exchangers for district heating by the described 3rd regulation valve regulation, most Heat supply network supplies water afterwards is exported by the heat supply network peak load calorifier.
Embodiment 2
The present embodiment Turbo-generator Set novel energy-conserving method, including the system described in embodiment 1, described method bag Include:Turbo-generator Set novel energy-conserving method of the present invention, including above-mentioned system, described method include:Non-heating period steamer Generating set is only used for generating electricity, and is not used in heat supply, is applied not only to generate electricity in heat supply period Turbo-generator Set, is additionally operable to heat supply, non- The generation mode of Turbo-generator Set is identical when heat supply period generator operation and heat supply period are generated electricity, heating is run;
Wherein, non-heating period, heat supply period generation mode specifically include:
Obtain the demand electricity of Auxiliary System;
Judge the output electricity of the station-service electric generator output of the back pressure type small turbine driving, compare Auxiliary System The size of demand electricity and output electricity,
If exporting the demand electricity that electricity is more than or equal to Auxiliary System, station-service electric generator output station service electrical system institute The contactor of the electricity needed, main generator and station service electrical system is closed;
If exporting the demand electricity that electricity is less than Auxiliary System, the electricity needed for station-service electric generator output station service electrical system Amount, the insufficient section electricity of the demand electricity of Auxiliary System is supplied by main generator output electricity, and is adjusted by described second Quantity of steam in valve regulation input back pressure type small turbine;
Non-heating period, it is arranged on the 3rd gas pipeline of the described height of connection, intermediate pressure cylinder and heat supply network peak load calorifier 3rd regulating valve, be arranged on it is remaining on the afterheat steam pipeline of the described back pressure type small turbine of connection and heat supply network peak load calorifier Vapours regulating valve is closed, while is arranged on the condensing conveyance conduit of the described back pressure type small turbine of connection and the second condenser On condensing regulating valve open, the circulating backwater into cooling tower systems do not enter source pump;
Heat supply period, the recirculated water of the circulating backwater of the first described condenser as source pump, source pump by it is high, The steam of low pressure (LP) cylinder output and the steam drive of back pressure type small turbine output, are steamed by the 4th described regulating valve, waste heat Quantity of steam of the steam control valve regulation into source pump;Heat supply network backwater is after source pump once heat, into heat supply network point Peak heater carries out reheating, while enters the quantity of steam of spike heat exchangers for district heating by the described 3rd regulation valve regulation, most Heat supply network supplies water afterwards is exported by the heat supply network peak load calorifier.
The present invention sets up back pressure type small turbine in heat supply period and non-heating period, utilizes the high pressure cylinder steam discharge of retrofitted unit As the driving vapour source of back pressure type small turbine, back pressure type small turbine, which generates electricity, is incorporated to the station service electrical system of Thermal Power Station, changes The electricity volume of Turbo-generator Set is made, increases the economic benefit of Thermal Power Station, is the small steamer of back pressure type during summer operation Machine sets independent condenser, with retrofitted unit common recycle water system.Meanwhile in the winter time during heat supply, absorption heat pump is set, Drawn gas with the heating of retrofitted unit and drive source pump, absorb the circulating water afterheat of transformation Turbo-generator Set, the small vapour of back pressure type Turbine discharge is directly discharged into retrofitted unit heat supply network peak load calorifier.
Described above is only the preferred embodiment of the present invention, is not limited to this present invention, it is noted that for this For the those of ordinary skill of technical field, without departing from the technical principles of the invention, some improvement can also be made And modification, these improvement and modification also should be regarded as protection scope of the present invention.

Claims (4)

  1. A kind of 1. Turbo-generator Set novel energy-conserving system, it is characterised in that including:Described Turbo-generator Set includes main steaming Vapour generating set, back pressure type small turbine generating set, heat supply network peak load calorifier, source pump and cooling tower systems, wherein The main Turbo-generator Set includes senior middle school, the cylinder pressure being coaxially disposed, low pressure (LP) cylinder, main generator, described high, intermediate pressure cylinder to go out vapour Mouth is connected with the air intake of low pressure (LP) cylinder by the first gas pipeline;The high, venthole of intermediate pressure cylinder and back pressure type small turbine Air intake connected by the second gas pipeline;The air intake of the high, venthole of intermediate pressure cylinder and heat supply network peak load calorifier leads to Cross the connection of the 3rd gas pipeline;The high, venthole of intermediate pressure cylinder and the air intake of source pump are connected by the 4th gas pipeline It is logical;
    The back pressure type small turbine drives station-service electric generator, and described main generator, station-service electric generator are electrically connected Station service electrical system, described main generator, station-service electric generator are provided with contactor between station service electrical system respectively;
    The low pressure (LP) cylinder connects the first condenser, and the back pressure type small turbine connects the second condenser by condensing delivery pipe, The condensing conveyance conduit is provided with condensing regulating valve, and the back pressure type small turbine passes through afterheat steam pipeline communication heat supply network point Peak heater, the vapours pipeline are provided with afterheat steam regulating valve;
    The water inlet of first condenser connects cooling tower systems, the main frame recirculated water by main frame recirculated water water supply line Water supply line is provided with water supply regulating valve, and the delivery port of first condenser is connected by main frame recirculated water water return pipeline to be cooled down Tower System, the main frame recirculated water water return pipeline are provided with backwater regulating valve;
    The recirculated water influent side and water outlet side of source pump are connected with cooling tower systems respectively, and the recirculated water in source pump is institute The circulating backwater for the first condenser output stated;Heat supply network backwater input heat pump machine is once heated, and then heat supply network supplies water and passed through The delivery pipeline of the described source pump of connection and heat supply network peak load calorifier enters the heat supply network peak load calorifier and carries out two Secondary heating, last heat supply network supplies water to be exported by the heat supply network peak load calorifier, and the delivery pipeline is provided with hot water water supply and adjusted Save valve;
    Described the first gas pipeline, the second gas pipeline, the 3rd gas pipeline, be respectively equipped with the 4th gas pipeline adjust into Enter low pressure (LP) cylinder, back pressure type small turbine, heat supply network peak load calorifier, source pump displacement the first regulating valve, second regulation Valve, the 3rd regulating valve, the 4th regulating valve.
  2. 2. the energy conserving system of station boiler steam turbine according to claim 1, it is characterised in that second gas pipeline It is additionally provided with desuperheat/pressure reducer.
  3. 3. the energy conserving system of station boiler steam turbine according to claim 1, it is characterised in that the main frame recirculated water supplies Waterpipe is provided with major cycle water pump.
  4. A kind of 4. Turbo-generator Set novel energy-conserving method, it is characterised in that including any described system of claims 1 to 3, Described method includes:Non-heating period Turbo-generator Set is only used for generating electricity, and is not used in heat supply, in heat supply period Turbo-generator Set It is applied not only to generate electricity, is additionally operable to heat supply, Turbo-generator Set when non-heating period generator operation and heat supply period are generated electricity, heating is run Generation mode is identical;
    Wherein, non-heating period, heat supply period generation mode specifically include:
    Obtain the demand electricity of Auxiliary System;
    Judge the output electricity of the station-service electric generator output of the back pressure type small turbine driving, compare the demand of Auxiliary System The size of electricity and output electricity,
    If exporting the demand electricity that electricity is more than or equal to Auxiliary System, needed for station-service electric generator output station service electrical system The contactor of electricity, main generator and station service electrical system is closed;
    If exporting the demand electricity that electricity is less than Auxiliary System, the electricity needed for station-service electric generator output station service electrical system, The insufficient section electricity of the demand electricity of Auxiliary System is supplied by main generator output electricity, and is adjusted by second regulating valve Quantity of steam in section input back pressure type small turbine;
    Non-heating period, the 3rd be arranged on the 3rd gas pipeline of the described height of connection, intermediate pressure cylinder and heat supply network peak load calorifier Regulating valve, the waste heat being arranged on the afterheat steam pipeline of the described back pressure type small turbine of connection and heat supply network peak load calorifier steam Steam control valve is closed, while is arranged on the condensing conveyance conduit of the described back pressure type small turbine of connection and the second condenser Condensing regulating valve is opened, and the circulating backwater into cooling tower systems does not enter source pump;
    Heat supply period, the recirculated water of the circulating backwater of the first described condenser as source pump, source pump pass through high and low pressure The steam of cylinder output and the steam drive of back pressure type small turbine output, are adjusted by the 4th described regulating valve, afterheat steam Save the quantity of steam that valve regulation enters source pump;Heat supply network backwater adds after source pump once heat into heat supply network spike Hot device carries out reheating, while enters the quantity of steam of spike heat exchangers for district heating, last heat by the described 3rd regulation valve regulation Net supplies water to be exported by the heat supply network peak load calorifier.
CN201710649496.9A 2017-08-02 2017-08-02 Turbo-generator Set novel energy-conserving system and method Pending CN107420138A (en)

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CN108444145A (en) * 2018-05-02 2018-08-24 双良节能系统股份有限公司 First kind lithium bromide heat pump unit with spike heating
CN108487952A (en) * 2018-05-08 2018-09-04 中国华能集团清洁能源技术研究院有限公司 A kind of steam high-grade energy-recuperation system and working method for realizing annual operation
CN108915806A (en) * 2018-07-28 2018-11-30 西安热工研究院有限公司 It is a kind of width backpressure small turbine band for thermal drivers subsidiary engine system adjust power source system
CN109546670A (en) * 2018-12-29 2019-03-29 西安西热节能技术有限公司 A kind of air energy storage peak shaving system applied to Thermal generation unit
CN112554964A (en) * 2020-12-10 2021-03-26 神华福能(福建雁石)发电有限责任公司 Steam turbine unit and control method
CN113137653A (en) * 2021-04-02 2021-07-20 华电电力科学研究院有限公司 System and method for improving heat supply flexibility of thermal power plant
CN113375210A (en) * 2021-06-28 2021-09-10 大唐环境产业集团股份有限公司 Cold end waste heat supply method and system of coupling absorption heat pump

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CN113137653A (en) * 2021-04-02 2021-07-20 华电电力科学研究院有限公司 System and method for improving heat supply flexibility of thermal power plant
CN113375210A (en) * 2021-06-28 2021-09-10 大唐环境产业集团股份有限公司 Cold end waste heat supply method and system of coupling absorption heat pump

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