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 PDFInfo
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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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- 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
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
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. a kind of thermal power plant's flexibility transformation twin-tub decouples depth peak regulation system, characterized by comprising: for monitoring thermal power plant
The high pressure two-stage tandem by-pass unit (24) of thermal power plant unit working condition, high pressure twin-tub decouple pressure and temperature reducing heating unit
(23) and electric heating depth peak regulation unit (25)；The high pressure two-stage tandem by-pass unit (24) respectively with high pressure twin-tub solution
Coupling pressure and temperature reducing heating unit (23) is connected with electric heating depth peak regulation unit (25)；
The high pressure two-stage tandem by-pass unit (24) includes boiler (1), the venthole of the boiler (1) and high pressure cylinder (2)
It is connected, the venthole of the high pressure cylinder (2) is connected with reheater (6), the venthole and intermediate pressure cylinder of the reheater (6)
(3) be connected, the venthole of medium pressure cylinder (3) is connected with low pressure (LP) cylinder (4), the venthole of the low pressure (LP) cylinder (4) with press
Device (9) is connected, and the voltage balancer (9) is connected with the heat exchangers for district heating (10) for providing heat source for user, the high pressure
Cylinder (2), intermediate pressure cylinder (3) and low pressure (LP) cylinder (4) are connected with generator (5)；
High pressure twin-tub decoupling pressure and temperature reducing heating unit (23) includes control valve (18) and intelligence temperature-decreased pressure reducer (14),
One end of the control valve (18) is connected with the admission end of high pressure cylinder (2), and the other end of the control valve subtracts with intelligent desuperheat
The admission end of depressor (14) is connected；
The electric heating depth peak regulation unit (25) include power generation network (26), electric heater unit (19) water softening device (20) and
Electric heat-storage device (21), one end of power generation network (26) are connected the other end and electric heater unit (19) with generator (5)
Be connected, the input terminal and output end of the electric heater unit (19) respectively with water softening device (20) and electric heat-storage device (21)
It is connected, the electric heat-storage device (21) is connected by control valve d (22) with the voltage balancer (9).
2. a kind of thermal power plant's flexibility transformation twin-tub according to claim 1 decouples depth peak regulation system, feature also exists
In: high pressure twin-tub decoupling pressure and temperature reducing heating unit (23) includes one or more intelligent temperature-decreased pressure reducer (14).
3. a kind of thermal power plant's flexibility transformation twin-tub according to claim 2 decouples depth peak regulation system, feature also exists
In: the intelligence temperature-decreased pressure reducer (14) includes an air intake and a venthole.
4. a kind of thermal power plant's flexibility transformation twin-tub according to claim 1 decouples depth peak regulation system, feature also exists
In: the electric heater unit (19) uses resistive heating device and electromagnetic system heating arrangement.
5. a kind of thermal power plant's flexibility transformation twin-tub according to claim 1 decouples depth peak regulation system, feature also exists
In: the electric heat-storage device (21) uses solid heat storage device, liquid heat storage device and gas regenerative apparatus.
6. a kind of thermal power plant's flexibility transformation twin-tub according to claim 5 decouples depth peak regulation system, feature also exists
In: the solid heat storage device includes high magnesia brick and high-alumina brick.
7. a kind of thermal power plant's flexibility transformation twin-tub according to claim 5 decouples depth peak regulation system, feature also exists
In: the liquid heat storage device includes water and water of constitution.
8. a kind of thermal power plant's flexibility transformation twin-tub according to claim 5 decouples depth peak regulation system, feature also exists
In: gas regenerative apparatus includes the gentle solid phase change material of gas-liquid phase transition material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821113731.7U CN208804740U (en) | 2018-07-13 | 2018-07-13 | A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system |
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| CN201821113731.7U CN208804740U (en) | 2018-07-13 | 2018-07-13 | A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system |
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| CN208804740U true CN208804740U (en) | 2019-04-30 |
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Cited By (1)
| 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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- 2018-07-13 CN CN201821113731.7U patent/CN208804740U/en active Active
Cited By (1)
| 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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