CN208804740U - A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system - Google Patents

A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system Download PDF

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CN208804740U
CN208804740U CN201821113731.7U CN201821113731U CN208804740U CN 208804740 U CN208804740 U CN 208804740U CN 201821113731 U CN201821113731 U CN 201821113731U CN 208804740 U CN208804740 U CN 208804740U
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cylinder
peak regulation
pressure
decoupling
power plant
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陈德宝
赵铁强
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Dalian Hengli Measure & Control Instrument Engineering Co Ltd
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Dalian Hengli Measure & Control Instrument Engineering Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

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Abstract

The utility model discloses a kind of thermal power plant's flexibility transformation twin-tubs to decouple depth peak regulation system, the system is applied to thermal power plant's thermal power plant unit depth peak regulation occasion, pass through the intelligent control of intelligent temperature-decreased pressure reducer, realize high steam pressure and temperature reducing, meet large area heat supply, to realize that twin-tub decouples, reach level-one peak regulation purpose.Electric energy production thermal energy is consumed by the intelligent control of electric heater unit, reaches second level peak regulation purpose, the thermal energy of generation is stored by regenerative apparatus, is used when being needed as standby heat source.It is used in combination by level-one peak regulation and second level peak regulation and achievees the purpose that depth peak regulation.

Description

A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system
Technical field
The utility model relates to thermal power plant's thermal power plant unit monitoring technology fields more particularly to a kind of thermal power plant's flexibility to be transformed Twin-tub decouples depth peak regulation system.
Background technique
In recent years since, as the significant changes and installed capacity in power grid of network load structure increase rapidly, power grid is daily The peak-valley difference of load increasingly increases in operation, while the scarce capacity of power grid abandonment consumption.Cogeneration units " electricity determining by heat " Mode is run, and peak modulation capacity is limited.Peak regulation difficulty has become in operation of power networks distinct issues the most.Peak load regulation network and thermal motor Contradiction processing between group heat supply is bad, may influence resident's heat supply in winter safety, the relationship people's livelihood.In order to meet peak load regulation network need It asks and living necessities of the power plant in keen competition, depth peak regulation is imperative.
Peak regulation relies primarily on unit load shedding peak regulation inside power plant at present and electric heat storage boiler assists peak regulation technique etc. to come in fact It is existing, although such technology can achieve the purpose that peak regulation, is limited by region large area heating demand and technology itself, exist and set It is standby to take up a large area, build the disadvantages of maintenance cost height and serious energy waste, it is unable to reach optimal depth peak regulation effect.
Utility model content
According to problem of the existing technology, the utility model discloses a kind of thermal power plant's flexibility transformation twin-tub decoupling is deep Spend peak regulation system, comprising: for monitoring high pressure two-stage tandem by-pass unit, the high pressure of thermal power plant's thermal power plant unit working condition Twin-tub decouples pressure and temperature reducing heating unit and electric heating depth peak regulation unit；The high pressure two-stage tandem by-pass unit respectively with High pressure twin-tub decoupling pressure and temperature reducing heating unit is connected with electric heating depth peak regulation unit；
The high pressure two-stage tandem by-pass unit includes boiler, and the venthole of the boiler is connected with high pressure cylinder, institute The venthole for stating high pressure cylinder is connected with reheater, and the venthole of the reheater is connected with intermediate pressure cylinder, medium pressure cylinder Venthole is connected with low pressure (LP) cylinder, and the venthole of the low pressure (LP) cylinder is connected with voltage balancer, the voltage balancer with for be user The heat exchangers for district heating for providing heat source is connected, and affiliated high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder are connected with generator；
The high pressure twin-tub decoupling pressure and temperature reducing heating unit includes control valve and intelligent temperature-decreased pressure reducer, the control One end of valve is connected with the admission end of high pressure cylinder, and the other end of the control valve is connected with the admission end of intelligent temperature-decreased pressure reducer It is logical；
The electric heating depth peak regulation unit includes power generation network, electric heater unit water softening device and electric heat-storage device, One end other end that is connected with generator of the power generation network is connected with electric heater unit, the input of the electric heater unit End and output end be connected respectively with water softening device and electric heat-storage device, the electric heat-storage device pass through control valve d with it is described Voltage balancer is connected.
The high pressure twin-tub decoupling pressure and temperature reducing heating unit includes one or more intelligent temperature-decreased pressure reducer.
The intelligence temperature-decreased pressure reducer includes an air intake and a venthole.
The electric heater unit uses resistive heating device and electromagnetic system heating arrangement.
The electric heat-storage device uses solid heat storage device, liquid heat storage device and gas regenerative apparatus.
The solid heat storage device includes but is not limited to high magnesia brick, high-alumina brick.
The liquid heat storage device includes but is not limited to water, water of constitution.
Gas regenerative apparatus includes but is not limited to gas-liquid phase transition material, gas-solid phase-change material.
By adopting the above-described technical solution, a kind of thermal power plant's flexibility transformation twin-tub decoupling provided by the utility model is deep Peak regulation system is spent, which is applied to thermal power plant's thermal power plant unit depth peak regulation occasion, controls by the intelligence of intelligent temperature-decreased pressure reducer System realizes high steam pressure and temperature reducing, meets large area heat supply, to realize that twin-tub decouples, reaches level-one peak regulation purpose.Pass through The intelligent control of electric heater unit consumes electric energy production thermal energy, reaches second level peak regulation purpose, by regenerative apparatus by the heat of generation It can store, be used when being needed as standby heat source.It is used in combination by level-one peak regulation and second level peak regulation and reaches depth peak regulation Purpose.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts, It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of system disclosed in the utility model；
Fig. 2 is the structural schematic diagram of high pressure two-stage tandem by-pass unit in the utility model；
Fig. 3 is the structural schematic diagram that high pressure twin-tub decouples pressure and temperature reducing heating unit in the utility model；
Fig. 4 is the structural schematic diagram of electric heating depth peak regulation unit in the utility model.
Specific embodiment
To keep the technical solution of the utility model and advantage clearer, below with reference to attached in the utility model embodiment Figure, clear and complete description is carried out to the technical scheme in the embodiment of the utility model:
A kind of thermal power plant's flexibility transformation twin-tub as Figure 1-Figure 4 decouples depth peak regulation system, with spraying technique With electric energy storage technology, high pressure twin-tub decoupling cooperation electric heating scheme, Optimal improvements thermal power plant thermal power plant unit depth are used Peak regulation single structure, improves the ability of the new energy such as power grid consumption wind-powered electricity generation, photoelectricity and nuclear power, and makes entirely with control system Process realizes the intelligent control of online, has not only saved maintenance cost, has more improved control precision.The specific system includes senior middle school Two-stage tandem by-pass unit 24, electric heating depth peak regulation unit 25 and high pressure twin-tub is pressed to decouple pressure and temperature reducing heating unit 23, The high pressure two-stage tandem by-pass unit 24 subtracts with electric heating depth peak regulation unit 25 and high pressure twin-tub decoupling desuperheat respectively Pressure heating unit 23, which is connected, realizes linkage.Wherein high pressure two-stage tandem by-pass unit 24 is responsible for fired power generating unit normal operation hair Electricity, and Unit Commitment is cooperated by high pressure turbine by and intermediate pressure by-pass；Electric heating depth peak regulation unit 25 is responsible for consumption unit and is issued Electric energy, reduce electric energy surfing flow, reach peak regulation purpose, high pressure twin-tub decoupling pressure and temperature reducing heating unit 23 is responsible for realization The decoupling of high intermediate pressure cylinder thermoelectricity, makes more heats generate electricity for heat supply without going.
Further, high pressure two-stage tandem by-pass unit 24 includes boiler 1, the venthole and high pressure cylinder 2 of the boiler 1 It is connected, the venthole of high pressure cylinder 2 is connected with reheater 6, and steam does work by high pressure cylinder 2, the venthole of the reheater 6 It is connected with intermediate pressure cylinder 3, the venthole of intermediate pressure cylinder 3 is connected with low pressure (LP) cylinder 4, venthole and 9 phase of voltage balancer of the low pressure (LP) cylinder 4 Connection, the voltage balancer 9 are connected with the heat exchangers for district heating 10 for providing heat source for user, affiliated high pressure cylinder 2, intermediate pressure cylinder 3 It is connected by shaft with generator 5 with low pressure (LP) cylinder 4, the operating of high pressure cylinder 2, intermediate pressure cylinder 3 and low pressure (LP) cylinder 4 generated electricity to realize Journey.
Further, control valve 18 is connected with the admission end of high pressure cylinder 2, the control valve 18 and intelligent temperature-decreased pressure reducer 14 admission end is connected.The intelligent effect of temperature-decreased pressure reducer 14 is that the high steam that boiler 1 generates is not being entered into high pressure cylinder 2 Acting just to extraction, is flowed into intelligent 14 entrance of temperature-decreased pressure reducer by control valve 18, supplies after integral type temperature-decreased pressure reducer User 16.
Further, electric heating depth peak regulation unit 25 includes power generation network 26, electric heater unit 19, water softening device 20 It is connected with one end other end that is connected with generator 5 of electric heat-storage device 21, the power generation network 26 with electric heater unit 19, The input terminal and output end of the electric heater unit 19 are connected with water softening device 20 and electric heat-storage device 21 respectively, the electricity Regenerative apparatus 21 is connected by control valve d22 with the voltage balancer 9.Industry water can be flowed through described by water softening device 20 Electric heater unit 19 flows into electric heat-storage device 21 after heating.
Further, intelligent temperature-decreased pressure reducer 14 uses labyrinth disc and porous combination structure setting, including one into vapour Mouth and a venthole.
Further, high pressure two-stage tandem by-pass unit 24 is connected to peak regulation instruction, and boiler 1 first can be according to oneself most Low permissible load carries out underrun, and the electric energy issued at this time can be reduced compared with normal operation, but must satisfy boiler 1 Minimum load requirement, depth peak regulation purpose is not achieved, followed by can pass through high pressure twin-tub decoupling pressure and temperature reducing heating unit 23 steam for generating boiler, should participate in the steam of power generation, depressurize supply heat source demand by intelligent temperature-decreased pressure reducer Occasion such as heats, and can not reduced in the electric energy into generating set, issued at this time compared with normal operation, but must satisfy hair The minimum load requirement of motor group, adjustable peak range further increases, finally by electric heating depth peak regulation unit 25 to machine The minimum generated energy of group carries out consumption use, does not allow power grid on the electric energy of sending, achievees the purpose that depth peak regulation.State in the process The electricity that national grid needs control system control unit that can surf the Internet to control system instruction, that is, peak regulation, peak regulation refer to The meaning of the wave crest of power grid, trough, all power generation occasions are all surfed the Internet, but are had more than is needed so much since user demand is few Electricity, it is necessary to which peak regulation, controlling a part of electricity volume makes it not surf the Internet, and passes through control system and temperature, flow feedback realization pair The electricity that the treating capacity and electric heater unit that intelligent temperature-decreased pressure reducer needs need to use up carries out system control, finally realizes depth Peak regulation purpose.System disclosed by the utility model is by high pressure two-stage tandem by-pass unit and electric heating through the above technical solution Real-time perfoming linkage control between depth peak regulation unit not only can achieve thermal power plant unit decoupling heat demand, but also realize The depth peak regulation of any time, is obviously improved the online peak modulation capacity of thermoelectricity unit, and the consumption of renewable energy is effectively relieved Predicament realizes good economic benefit.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (8)

1.一种火电厂灵活性改造双缸解耦深度调峰系统，其特征在于包括：用于监控火电厂供热机组工作状态的高中压二级串联旁路单元(24)、高中压双缸解耦减温减压供热单元(23)和电加热深度调峰单元(25)；所述高中压二级串联旁路单元(24)分别与高中压双缸解耦减温减压供热单元(23)和电加热深度调峰单元(25)相连接；1. a thermal power plant flexibility transformation dual-cylinder decoupling deep peak regulation system is characterized in that comprising: for monitoring the high and medium pressure secondary series bypass unit (24) of the thermal power plant heating unit working state, the high and medium pressure double-cylinder Decoupling the temperature reduction and pressure reduction heating unit (23) and the electric heating depth peak regulation unit (25); the high and medium pressure secondary series bypass unit (24) is respectively decoupled from the high and medium pressure double cylinder for temperature reduction and pressure reduction heating supply The unit (23) is connected with the electric heating depth peak regulation unit (25); 所述高中压二级串联旁路单元(24)包括锅炉(1)，所述锅炉(1)的出汽口与高压缸(2)相连通，所述高压缸(2)的出汽口与再热器(6)相连通，所述再热器(6)的出汽口与中压缸(3)相连通，所述中压缸(3)的出汽口与低压缸(4)相连通，所述低压缸(4)的出汽口与均压器(9)相连通，所述均压器(9)与用于为用户提供热源的热网加热器(10)相连通，所述高压缸(2)、中压缸(3)和低压缸(4)与发电机(5)相连接；The high and medium pressure secondary series bypass unit (24) comprises a boiler (1), the steam outlet of the boiler (1) is communicated with the high pressure cylinder (2), and the steam outlet of the high pressure cylinder (2) is connected to the high pressure cylinder (2). The reheater (6) is communicated, the steam outlet of the reheater (6) is communicated with the medium pressure cylinder (3), and the steam outlet of the middle pressure cylinder (3) is communicated with the low pressure cylinder (4) The steam outlet of the low-pressure cylinder (4) is communicated with the pressure equalizer (9), and the pressure equalizer (9) is communicated with the heat network heater (10) used to provide a heat source for the user, so The high pressure cylinder (2), the medium pressure cylinder (3) and the low pressure cylinder (4) are connected with the generator (5); 所述高中压双缸解耦减温减压供热单元(23)包括控制阀(18)和智能减温减压器(14)，所述控制阀(18)的一端与高压缸(2)的进汽端相连接，所述控制阀的另一端与智能减温减压器(14)的进汽端相连通；The high-medium-pressure double-cylinder decoupled temperature reduction and pressure reduction heating unit (23) includes a control valve (18) and an intelligent temperature reduction and pressure reduction device (14), and one end of the control valve (18) is connected to the high pressure cylinder (2) connected to the steam inlet end of the control valve, and the other end of the control valve is communicated with the steam inlet end of the intelligent desuperheater and pressure reducer (14); 所述电加热深度调峰单元(25)包括发电网络(26)、电加热装置(19)软化水装置(20)和电蓄热装置(21)，所述发电网络(26)的一端与发电机(5)相连接另一端与电加热装置(19)相连接，所述电加热装置(19)的输入端和输出端分别与软化水装置(20)和电蓄热装置(21)相连接，所述电蓄热装置(21)通过控制阀d(22)与所述均压器(9)相连通。The electric heating deep peak regulation unit (25) includes a power generation network (26), an electric heating device (19), a water softening device (20) and an electric heat storage device (21), and one end of the power generation network (26) is connected to the power generation network (26). The other end of the machine (5) is connected with the electric heating device (19), and the input end and the output end of the electric heating device (19) are respectively connected with the softening water device (20) and the electric heat storage device (21) , the electric heat storage device (21) is communicated with the pressure equalizer (9) through a control valve d (22). 2.根据权利要求1所述的一种火电厂灵活性改造双缸解耦深度调峰系统，其特征还在于：所述高中压双缸解耦减温减压供热单元(23)包括一个或者多个智能减温减压器(14)。2. a kind of thermal power plant flexibility transformation double-cylinder decoupling deep peak regulation system according to claim 1, is characterized in that: described high and medium pressure double-cylinder decoupling decoupling temperature reduction and pressure reduction heating unit (23) comprises a Or multiple intelligent desuperheaters (14). 3.根据权利要求2所述的一种火电厂灵活性改造双缸解耦深度调峰系统，其特征还在于：所述智能减温减压器(14)包括一个进汽口和一个出汽口。3. a kind of thermal power plant flexibility retrofit dual-cylinder decoupling deep peak regulation system according to claim 2, it is characterized in that: described intelligent desuperheater (14) comprises a steam inlet and a steam outlet mouth. 4.根据权利要求1所述的一种火电厂灵活性改造双缸解耦深度调峰系统，其特征还在于：所述电加热装置(19)采用电阻式加热装置和电磁式加热装置。4 . The dual-cylinder decoupling deep peak shaving system according to claim 1 , wherein the electric heating device ( 19 ) adopts a resistance heating device and an electromagnetic heating device. 5 . 5.根据权利要求1所述的一种火电厂灵活性改造双缸解耦深度调峰系统，其特征还在于：所述电蓄热装置(21)采用固体蓄热装置、液体蓄热装置和气体蓄热装置。5. A kind of thermal power plant flexibility transformation dual-cylinder decoupling deep peak regulation system according to claim 1, it is characterized in that: described electric heat storage device (21) adopts solid heat storage device, liquid heat storage device and Gas heat storage device. 6.根据权利要求5所述的一种火电厂灵活性改造双缸解耦深度调峰系统，其特征还在于：所述固体蓄热装置包括高镁砖和高铝砖。6 . The dual-cylinder decoupling deep peak regulation system according to claim 5 , wherein the solid heat storage device comprises high-magnesium bricks and high-alumina bricks. 7 . 7.根据权利要求5所述的一种火电厂灵活性改造双缸解耦深度调峰系统，其特征还在于：所述液体蓄热装置包括水和化合水。7 . The dual-cylinder decoupling deep peak shaving system for flexible retrofit of a thermal power plant according to claim 5 , further characterized in that: the liquid heat storage device comprises water and compounded water. 8 . 8.根据权利要求5所述的一种火电厂灵活性改造双缸解耦深度调峰系统，其特征还在于：气体蓄热装置包括气液相变材料和气固相变材料。8 . The dual-cylinder decoupling deep peak shaving system for flexible transformation of a thermal power plant according to claim 5 , further characterized in that: the gas heat storage device comprises a gas-liquid phase change material and a gas-solid phase change material. 9 .
CN201821113731.7U 2018-07-13 2018-07-13 A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system Active CN208804740U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108592137A (en) * 2018-07-13 2018-09-28 大连亨利测控仪表工程有限公司 A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108592137A (en) * 2018-07-13 2018-09-28 大连亨利测控仪表工程有限公司 A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system

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Denomination of utility model: A dual-cylinder decoupling deep peak regulation system for flexibility retrofit of a thermal power plant

Granted publication date: 20190430

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