CN106089338A - A kind of back pressure machine association system regulating heat supply and generating and method - Google Patents
A kind of back pressure machine association system regulating heat supply and generating and method Download PDFInfo
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- CN106089338A CN106089338A CN201610385205.5A CN201610385205A CN106089338A CN 106089338 A CN106089338 A CN 106089338A CN 201610385205 A CN201610385205 A CN 201610385205A CN 106089338 A CN106089338 A CN 106089338A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of back pressure machine association system regulating heat supply and generating and method, system includes that back pressure thermal power plant unit, boiler energy storage are for thermal sub-system and adiabatic compression air energy storage subsystem.When heat supply low ebb, unit oepration at full load, unnecessary heat supply after low-pressure turbine generates electricity, is first heated heat-storage medium, is reheated moisturizing energy storage in boiler；When heat supply peak, moisturizing changes the hot water in boiler into, increases external heating load；When heat demand is between 25 DEG C of rated heating capacities corresponding with 95 DEG C of moisturizing temperature, calculate and set reasonable feed temperature, regulation feedwater automatic controller so that unit oepration at full load.During low power consumption, by unnecessary electric energy compression storage, the heat produced in compression process is absorbed by moisturizing；During peak of power consumption, the air of compression absorbs the heat in heat storage can, and expansion power generation increases generated energy.The present invention can not only guarantee that unit efficient stable runs, and also can regulate generating according to need for electricity simultaneously.
Description
Technical field
The invention belongs to heat supply and technical field of power generation, specifically relate to a kind of back pressure machine regulating heat supply and generating
Association system and method.
Background technology
Along with industrial development and growth in the living standard, the production of China also gets more and more with life vapour.Steam power plant carries on the back
The directly externally heat supply of press group steam discharge, in theory, the temperature-decreased pressure reducer that puts into operation when external heating load is more than back pressure machine heating load supplies
Heat, and back pressure unit under-capacity operation when thermal load demands is less, but present situation is some steam power plant's back pressure unit is chronically at low
Load operation operating mode so that back pressure type cogeneration of heat and power benefit is difficult to embody.
The principle of back pressure unit is electricity determining by heat, and thermic load directly determines electric load, and this just makes electric load be difficult to regulate.Add
Domestic large area close down small-sized extraction and condensing unit, encourage development back pressure unit to take out solidifying thermal power plant unit with large-scale, this just makes electrical network adjust
Peak energy power is more not enough.The difficulty of peak load regulation network is greatly increased, and also the utilization to other energy causes restriction, and thermoelectricity unit is such as
What participates in peak regulation becomes the problem that power industry is in the urgent need to address.Run in order to ensure back pressure unit efficient stable, some heat
Power plant takes such as installs the operation of rearmounted machine or the measure of energy-storage system after back pressure unit additional, it is ensured that back pressure thermal power plant unit is full
Load operation, but now unit generation remains maximum generating watt, causes producing dump energy, peak of power consumption during low power consumption
Time output not enough, do not mate with actual need for electricity, regulation is difficult.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of back of the body regulating heat supply and generating
Press association system and method.This system ensures the long-term oepration at full load of back pressure unit, increases external heating load during with hot peak,
Improve heat supply degree of amplitude modulation, reduce thermic load fluctuation regulation interval, reduce back pressure machine by adiabatic compression air energy storage subsystem
Group coupled thermomechanics effect, regulates generating more neatly according to need for electricity.
For achieving the above object, present invention employs techniques below scheme: a kind of back pressure machine regulating heat supply and generating joins
Assembly system, including back pressure thermal power plant unit, boiler energy storage for thermal sub-system and adiabatic compression air energy storage subsystem.
Described back pressure thermal power plant unit includes boiler, main steam turbine, main generator, oxygen-eliminating device, feed pump, temperature-decreased pressure reducer and
High-pressure heater；The outfan of described boiler is divided into two branch roads, and wherein a branch road is by main steam line and main steam turbine
Main inlet throttle-stop valve connects, and an other branch road is by the input of temperature-decreased pressure reducer with heat user
Connect；Described main steam turbine is connected with main generator, and described oxygen-eliminating device is connected with main steam turbine steam discharge and heats moisturizing, described
High-pressure heater is connected with deaerator feedwater end by feed pump, described high-pressure heater outfan and boiler feedwater input phase
Even, outfan hot water sends into boiler economizer.
Described boiler energy storage includes the first vapor-water heat exchanger, the second vapor-water heat exchanger, cold water storage cistern, hot water for thermal sub-system
Case, feedwater automatic controller, water supply pump, heat-exchanger pump, low-pressure turbine, energy-reserving generator；Moisturizing conveyance conduit one tunnel and cold water
The water inlet of case is connected, and another road is sequentially connected with the first vapor-water heat exchanger, the second vapor-water heat exchanger, boiler；Feedwater control automatically
Device water inlet end processed is connected with cold water storage cistern, hot water tank outlet simultaneously, and described feedwater automatic controller water side intakes with oxygen-eliminating device
Mouth is connected.
The heat that the moisturizing chemically come between waterwheel produces during absorbing compressed gas in the first vapor-water heat exchanger, just
Step heating moisturizing in the second vapor-water heat exchanger with heating heat storage can in medium after steam discharge mixed heat transfer become 95 DEG C of heat
Water is stored in boiler.
Described adiabatic compression air energy storage subsystem includes compressor, the first vapor-water heat exchanger, air accumulator, heat storage can and swollen
Swollen generating equipment, the medium in described heat storage can is the high-temperature phase-change energy storage material of such as fuse salt or composite.
A kind of method regulating heat supply and the back pressure machine association system of generating, comprises the steps:
1) use heat demand low-valley interval, it is ensured that main steam turbine oepration at full load, meet power plant self and heat user heat supply need
After asking, residue steam discharge first passes through low-pressure turbine generating, heats energy-accumulating medium subsequently into heat storage can, finally enters the second soda pop
Heat exchanger, is mixed and heated to 95 DEG C by the moisturizing of entrance, is stored in boiler, now is controlled to enter by feedwater automatic controller
The moisturizing of oxygen-eliminating device is 25 DEG C of cold water of cold water storage cistern；
2) using heat demand peak period, feedwater automatic controller controls to enter the moisturizing of oxygen-eliminating device by the 25 of cold water storage cistern DEG C of moisturizings
Change 95 DEG C of hot water of boiler into, reduce oxygen-eliminating device heating steam consumption, increase external heating load；
3) it is being less than the rated heating capacity of moisturizing 95 DEG C with heat demand and is being more than the rated heating capacity period of moisturizing 25 DEG C, foundation
Back pressure unit thermodynamic behaviour, sets back pressure unit oepration at full load in feedwater automatic controller and mates extraneous heating demand
Feed temperature, enter the feedwater hot water of automatic controller and cool water quantity according to this set value calculation during actual motion so that supply
Hot back pressure machine oepration at full load；
4) in the low power consumption period, being the most also to use heat demand low-valley interval, providing auxiliary power amount is stored up by compressor compresses air
Can be in air accumulator, the heat absorption produced in air compression process is in the moisturizing by the first vapor-water heat exchanger.
5) in the peak of power consumption period, the most also it is non-heat supply low-valley interval, main steam turbine steam discharge all externally heat supply, low pressure
Steam turbine is out of service, and in heat storage can, energy-accumulating medium stops heat absorption, and compressed air is after the energy-accumulating medium in heat storage can heats
Becoming high temperature and high pressure gas, expansion power generation produces electricity when increasing Peak power use.
Generally electricity consumption reaches unanimity with hot peak interval of time, substantially from system work process, due to compressed air mistake
Heat release in the first vapor-water heat exchanger in journey, with steam discharge heat accumulation during hot low ebb in heat storage can and boiler, boiler energy-storage system
Relatively independent with adiabatic compression air energy storage systems, though therefore when electricity consumption with heat demand peak valley asynchronous time also have very well
Matching.
The method of the present invention compared with the prior art, has the advantages that
(1) system that the present invention provides is ensureing unit stable operation at full capacity, is meeting external heating load, reduction thermic load fluctuation
While regulation interval, it is possible to regulate electricity consumption more neatly according to electrical load requirement.
(2) system that the present invention provides can reduce back pressure unit coupled thermomechanics effect, enables heat supply cleverer with electricity consumption
Regulate alively.
(3) heat absorption produced in air compression process is in moisturizing to be heated, absorbs during compressed air expansion power generation
Energy-accumulating medium heat, regulates the hotspot stress of back pressure unit to a certain extent.
(4) heat supply and electrification energy storage regulation system relatively independent, electricity consumption with heat demand peak interval of time asynchronous time also have
The preferably suitability.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention regulates heat supply and the back pressure machine association system of generating；
Fig. 2 is certain steam power plant typical case in the summer day thermic load curve chart shown in embodiment 1；
Fig. 3 is the confession heat flow curve figure after the steam power plant shown in embodiment 1 uses association system；
Fig. 4 is that the steam power plant's generating shown in embodiment 1 regulates schematic diagram with need for electricity.
The explanation of Fig. 1 Main Reference Numerals: 1 boiler；2 temperature-decreased pressure reducers；3. main steam turbine；4 main generators；5 heat user；
6 low-pressure turbines；7 energy-reserving generators；8 oxygen-eliminating devices；9 feed pumps；10 high-pressure heaters；11 compressors；12 first steam-water heat exchangings
Device；13 air accumulators；14 heat storage cans；15 expansion power generation equipment；16 second vapor-water heat exchangers；17 boilers；18 heat-exchanger pumps；19 feedwater
Automatic controller；20 water supply pumps；21 cold water storage cisterns.
Detailed description of the invention
Below in conjunction with the accompanying drawings, by detailed description of the invention, the invention will be further described.
With reference to Fig. 1, the present invention provides a kind of back pressure machine association system regulating heat supply and generating, including back pressure heat supply machine
Group, boiler energy storage are for thermal sub-system and adiabatic compression air energy storage subsystem.
Described back pressure thermal power plant unit includes that boiler 1, main steam turbine 3, main generator 4, oxygen-eliminating device 8, feed pump 9, desuperheat subtract
Depressor 2 and high-pressure heater 10；The outfan of described boiler 1 is divided into two branch roads, and wherein a branch road passes through main steam line
Being connected with main steam turbine 3 main inlet throttle-stop valve, an other branch road is connected with the input of heat user 5 by temperature-decreased pressure reducer 2；Described master
Steam turbine 3 is connected with main generator 4, and described oxygen-eliminating device 8 is connected with main steam turbine 3 steam discharge and heats demineralized water, described hyperbaric heating
Device 10 is connected to water end (W.E.) with oxygen-eliminating device 8 by feed pump 9, and described high-pressure heater 10 outfan and boiler 1 feed water input phase
Even, outfan hot water sends into boiler economizer.
Described boiler energy storage includes first vapor-water heat exchanger the 12, second vapor-water heat exchanger 16, cold water storage cistern for thermal sub-system
21, boiler 17, feedwater automatic controller 19, water supply pump 20, heat-exchanger pump 18, low-pressure turbine 6, energy-reserving generator 7；Demineralized water
Conveyance conduit one tunnel is connected with the water inlet of cold water storage cistern 21, and another road is sequentially connected with first vapor-water heat exchanger the 12, second soda pop and changes
Hot device 16, boiler 17, feedwater automatic controller 19 water inlet end is connected with cold water storage cistern 21, boiler 17 outlet simultaneously, described
Feedwater automatic controller 19 water side is connected with oxygen-eliminating device 8 water inlet.
The heat that the moisturizing chemically come between waterwheel produces during absorbing compressed gas in the first vapor-water heat exchanger 12,
Preliminarily heated moisturizing in the second vapor-water heat exchanger 16 with heating heat storage can 14 in medium after steam discharge mixed heat transfer become
95 DEG C of hot water are stored in boiler 17.
Described adiabatic compression air energy storage subsystem includes compressor the 11, first vapor-water heat exchanger 12, air accumulator 13, heat accumulation
Tank 14 and expansion power generation equipment 15, the high-temperature phase-change energy storage that medium is such as fuse salt or composite in described heat storage can 14
Material, this medium is only being heated by the steam discharge of low-pressure turbine 6 with hot low-valley interval, and remaining period stops heat absorption and adds hot compression
Air, the compressed air of High Temperature High Pressure expands increases generated energy.
A kind of method regulating heat supply and the back pressure machine association system of generating, comprises the steps:
1) use heat demand low-valley interval, it is ensured that main steam turbine oepration at full load, meet power plant self and heat user heat supply need
After asking, residue steam discharge first passes through low-pressure turbine generating, heats energy-accumulating medium subsequently into heat storage can, finally enters the second soda pop
Heat exchanger, is mixed and heated to 95 DEG C by the moisturizing of entrance, is stored in boiler, now is controlled to enter by feedwater automatic controller
The moisturizing of oxygen-eliminating device is 25 DEG C of cold water of cold water storage cistern；
2) using heat demand peak period, feedwater automatic controller controls to enter the moisturizing of oxygen-eliminating device by cold water storage cistern
25 DEG C of moisturizings change 95 DEG C of hot water of boiler into, reduce oxygen-eliminating device heating steam consumption, increase external heating load；
3) it is being less than the rated heating capacity of moisturizing 95 DEG C with heat demand and is being more than the rated heating capacity period of moisturizing 25 DEG C, foundation
Back pressure unit thermodynamic behaviour, sets back pressure unit oepration at full load in feedwater automatic controller and mates extraneous heating demand
Feed temperature, enter the feedwater hot water of automatic controller and cool water quantity according to this set value calculation during actual motion so that supply
Hot back pressure machine oepration at full load；
4) in the low power consumption period, being the most also to use heat demand low-valley interval, providing auxiliary power amount is stored up by compressor compresses air
Can be in air accumulator, the heat absorption produced in air compression process is in the moisturizing by the first vapor-water heat exchanger.
5) in the peak of power consumption period, the most also it is non-heat supply low-valley interval, main steam turbine steam discharge all externally heat supply, low pressure
Steam turbine is out of service, and heat storage can energy-accumulating medium stops heat absorption, and compressed air becomes after the energy-accumulating medium in heat storage can heats
Becoming high temperature and high pressure gas, expansion power generation produces electricity when increasing peak of power consumption.
Generally heat supply reaches unanimity, from system work process, during compressed air substantially with generating peak interval of time
Heat release in the first vapor-water heat exchanger 12, with steam discharge energy storage during hot low ebb in heat storage can 14 and boiler 17, owing to boiler stores up
Can system relatively independent with adiabatic compression air energy storage systems, even if therefore when electricity consumption with heat demand peak valley asynchronous time also have
There is good matching.
Embodiment 1
With reference to Fig. 2, the present invention illustrates with typical case in the summer day thermic load curve of certain steam power plant, is specifically described back pressure machine association system
Heat supply and generating regulation process, for other steam power plants, operation logic is identical.
Certain steam power plant's main steam turbine 3 rated generation power is 15MW, exhaust parameter be 1.27MPa, 292.7 DEG C, with heat need
Ask and be 144.5t/h, minimum 82.7t/h to the maximum.When demineralized water moisturizing is 25 DEG C, external heat supply 111.4t/h；Work as demineralized water
When moisturizing is 95 DEG C, external heat supply 125.6t/h.When the moisturizing of entrance oxygen-eliminating device 8 is changed into 95 DEG C of hot water by 25 DEG C of cold water, externally
Heating load increases 14.2t/h.
In Fig. 2,23 when next day 6, the rated heating capacity of main steam turbine 3 when being 25 DEG C with heat demand less than moisturizing, this
Time be heat supply low-valley interval.It is the desalination of 25 DEG C in cold water storage cistern 21 that feedwater automatic controller 19 controls to enter the moisturizing of oxygen-eliminating device 8
Water, it is ensured that unit oepration at full load, the unnecessary steam discharge of main steam turbine 3 enters low pressure back pressure machine 6 and generates electricity, and generated output is
2.5MW, energy-accumulating medium in low pressure back pressure machine 6 steam discharge heating heat storage can 14, finally mixes with moisturizing in the second vapor-water heat exchanger 16
Conjunction is heated to 95 DEG C and is stored in boiler 17
In.This period is also the low power consumption period, and main generator 4 and energy-reserving generator 7 generated output are 17.5MW.
In Fig. 2,6 up to 7 time, 17 up to 23 time, in this period heat demand less than moisturizing 95 DEG C rated heating capacity and
More than the rated heating capacity of moisturizing 25 DEG C, the hot water that now feedwater automatic controller 19 enters according to set value calculation when running
And cool water quantity, back pressure unit oepration at full load, and meet now use heat demand.
In Fig. 2,7 up to 17 time, and this period is heat supply peak period, and feedwater automatic controller 19 controls to enter oxygen-eliminating device 8
Moisturizing be the hot water of 95 DEG C in boiler 17, not enough heating load is compensated by regulating units.Low-pressure turbine 6 is in non-heat supply
Low-valley interval is out of service, and in heat storage can 14, energy-accumulating medium stops heat absorption.
Fig. 3 is to use after association system typical case's day summer of main steam turbine 3 for heat flow curve, and dotted line is that peak regulation compensates and supplies
Heat, before running with using association system compared with, reduce the frequent start-stop of regulating units during heat supply, peak regulation interval from
33.1t/h falls below 18.9t/h, it is ensured that the operation steady in a long-term of unit.
Fig. 4 is that the generating of typical case's day summer regulates schematic diagram with need for electricity, and curve 1 is to run adiabatic compression air energy storage
System generating curve before subsystem, curve 2 is typical case in summer day electricity consumption demand curve.20 when next day 6, and this period is to use
Electricity low-valley interval, main generator 4 and energy-reserving generator 7 generated output are 17.5MW, now produce electricity superfluous, enable compressed air storage
Energy subsystem, compressed air is stored in air accumulator 13.6 is the peak of power consumption period up to 20 time, now compresses in air accumulator 13
Air after the energy-accumulating medium in heat storage can 14 heats, become high temperature and high pressure gas, expansion power generation produces electricity when increasing peak of power consumption
Amount.
In Fig. 4, electricity consumption is to liking electricity consumer around steam power plant, and now back pressure machine association system product electricity is not surfed the Net, and meets thermoelectricity
Electricity consumer demand around factory, on the spot production and marketing, it is achieved the flexible to need for electricity.For other steam power plants, when steam power plant is sent out
During electricity online, running compressed-air energy storage subsystem, producing electricity has bigger regulation interval, and when Duo Jia steam power plant, back pressure unit is all adopted
Run by association system mode and generate electricity online time, can increase produce electric adjustable interval, slow down electrical network electric load regulate difficulty.Figure
2 understand with Fig. 4, and heat supply peak interval of time is the most synchronize with electricity consumption peak interval of time, owing to boiler heat supply energy storage subsystem is with adiabatic
Compressed-air energy storage subsystem is relatively independent, present invention shows the preferable suitability.
In implementation process of the present invention, back pressure unit remains oepration at full load, adds externally when with hot peak
Heating load, reduces between heat fluctuation regulatory region；Produce dump energy, peak of power consumption when preferably reducing low power consumption simultaneously
Time the not enough situation of output, regulate electricity consumption according to heat demand more flexibly, give a kind of back pressure thermal power plant unit association system
Heat supply and the regulation System and method for of generating.
Heretofore described detailed description of the invention is only the preferable case study on implementation of the present invention, is not used for limiting this
Bright practical range.On the premise of without departing from the principle of the invention and content, it is also possible to make some improvement, these improve
Also should be regarded as protection scope of the present invention.
Claims (5)
1. the back pressure machine association system regulating heat supply and generating, it is characterised in that: described system include back pressure thermal power plant unit,
Boiler energy storage is for thermal sub-system and adiabatic compression air energy storage subsystem；
Described back pressure thermal power plant unit includes boiler, main steam turbine, main generator, oxygen-eliminating device, feed pump, temperature-decreased pressure reducer and high pressure
Heater；The outfan of described boiler is divided into two branch roads, and wherein a branch road is by main steam line and the main vapour of main steam turbine
Door connects, and an other branch road is connected with the input of heat user by temperature-decreased pressure reducer；Described main steam turbine and main generator
Connecting, described oxygen-eliminating device is connected with main steam turbine steam discharge and heats moisturizing, and described high-pressure heater is given with oxygen-eliminating device by feed pump
Water end (W.E.) is connected, and described high-pressure heater outfan is connected with boiler feedwater input, and outfan hot water sends into boiler economizer；
Described boiler energy storage for thermal sub-system include the first vapor-water heat exchanger, the second vapor-water heat exchanger, cold water storage cistern, boiler,
Feedwater automatic controller, water supply pump, heat-exchanger pump, low-pressure turbine, energy-reserving generator；Moisturizing conveyance conduit one tunnel and cold water storage cistern
Water inlet is connected, and another road is sequentially connected with the first vapor-water heat exchanger, the second vapor-water heat exchanger, boiler, and feed water automatic controller
Water inlet end is connected with cold water storage cistern, hot water tank outlet simultaneously, described feedwater automatic controller water side and oxygen-eliminating device water inlet phase
Even；
Described adiabatic compression air energy storage subsystem includes that compressor, the first vapor-water heat exchanger, air accumulator, heat storage can and expansion are sent out
Electricity equipment.
Regulation heat supply the most according to claim 1 and the back pressure machine association system of generating, it is characterised in that: described boiler
Energy storage is in thermal sub-system, and the moisturizing chemically come between waterwheel produces during absorbing compressed gas in the first vapor-water heat exchanger
Heat, preliminarily heated moisturizing in the second vapor-water heat exchanger with heating heat storage can in medium after steam discharge mixed heat transfer become
95 DEG C of hot water are become to be stored in boiler.
Regulation heat supply the most according to claim 1 and 2 and the back pressure machine association system of generating, it is characterised in that: described storage
Medium in hot tank is high-temperature phase-change energy storage material.
Regulation heat supply the most according to claim 3 and the back pressure machine association system of generating, it is characterised in that: described high-temperature-phase
Change energy-storage material is fuse salt or composite.
5. control method based on the regulation heat supply described in claim 1 with the back pressure machine association system of generating, it is characterised in that:
Comprise the steps:
Step (1), use heat demand low-valley interval, it is ensured that main steam turbine oepration at full load, meet power plant self and heat user
After heat demand, residue steam discharge first passes through low-pressure turbine generating, heats energy-accumulating medium subsequently into heat storage can, finally enters the
Two vapor-water heat exchangers, are mixed and heated to 95 DEG C by the moisturizing of entrance, are stored in boiler, now by feedwater automatic controller control
System enters moisturizing is cold water storage cistern 25 DEG C of cold water of oxygen-eliminating device；
Step (2), using heat demand peak period, feedwater automatic controller controls to enter the moisturizing of oxygen-eliminating device by the 25 of cold water storage cistern
DEG C moisturizing changes 95 DEG C of hot water of boiler into；
Step (3), with heat demand less than the rated heating capacity of moisturizing 95 DEG C and more than rated heating capacity period of moisturizing 25 DEG C,
According to back pressure unit thermodynamic behaviour, feedwater automatic controller sets back pressure unit oepration at full load and mates extraneous heat supply
The feed temperature of load, enters hot water and the cool water quantity of feedwater automatic controller, makes according to this set value calculation during actual motion
Obtain heat supply back pressure machine oepration at full load；
Step (4), in the low power consumption period, be the most also to use heat demand low-valley interval, providing auxiliary power amount passes through compressor compresses
The heat absorption that air energy storage produces in air accumulator, air compression process is in the moisturizing by the first vapor-water heat exchanger;
Step (5), in the peak of power consumption period, be the most also non-heat supply low-valley interval, all externally heat supplies of main steam turbine steam discharge, low
Pressure steam turbine is out of service, and in heat storage can, energy-accumulating medium stops heat absorption, the storage in heat storage can of the compressed air in air accumulator
Can become high temperature and high pressure gas after medium heating, expansion power generation produces electricity when increasing peak of power consumption.
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| CN109184831A (en) * | 2018-10-17 | 2019-01-11 | 中国船舶重工集团公司第七0三研究所 | It a kind of energy supply side can multipotency switching, the hot energy storage multipotency supply system of decoupling type |
| CN109184831B (en) * | 2018-10-17 | 2023-10-20 | 中国船舶重工集团公司第七0三研究所 | Energy supply side multi-energy switching and decoupling type heat energy storage multi-energy supply system |
| CN110159372A (en) * | 2019-06-26 | 2019-08-23 | 西安西热节能技术有限公司 | A kind of system and method for realizing vapour pneumoelectric trilogy supply |
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| CN110608073B (en) * | 2019-09-30 | 2022-04-12 | 国网山东省电力公司电力科学研究院 | Method for analyzing influence of back pressure on steam turbine generator unit and output space of steam turbine generator unit |
| CN110783961A (en) * | 2019-12-06 | 2020-02-11 | 山东大学 | Overwater photovoltaic system capable of reducing impact of grid connection on power grid |
| CN111706846A (en) * | 2020-07-21 | 2020-09-25 | 宁波正源电力有限公司 | System for adjusting heat supply peak valley by utilizing energy storage of high-pressure heater and operation mode |
| CN112460668A (en) * | 2020-12-01 | 2021-03-09 | 福建晋江热电有限公司 | Undisturbed heat storage system and method for peak valley filling of back pressure type heat supply unit |
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