CN109139151A - A kind of thermoelectricity decoupled system with heat accumulation - Google Patents
A kind of thermoelectricity decoupled system with heat accumulation Download PDFInfo
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- CN109139151A CN109139151A CN201811003351.2A CN201811003351A CN109139151A CN 109139151 A CN109139151 A CN 109139151A CN 201811003351 A CN201811003351 A CN 201811003351A CN 109139151 A CN109139151 A CN 109139151A
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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
- F01K13/00—General layout or general methods of operation of complete plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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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
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/006—Auxiliaries or details not otherwise provided for
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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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
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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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A kind of thermoelectricity decoupled system with heat accumulation provided by the invention, including the fused salt heat reservoir being arranged on the reheated steam pipeline of Steam Turbine, wherein the heat supply network water out of fused salt heat reservoir is connect by heat-exchange system with heat network system；By the way that branch is arranged on the reheated steam pipeline of Steam Turbine, connect fused salt heat reservoir, the thermal energy that steam turbine is generated when higher generation load is run, heat accumulation is carried out by fused salt, when steam turbine needs to carry out underload peak regulation, and steam turbine power generation power declines, heat supply network heat supply can be supplemented using fused salt heat release, to realize that thermoelectricity decouples, solves the existing fired power generating unit with heat supply, there are problems that the regulatory demand of generated energy and heating load cannot be met simultaneously；And then it is of great significance to the flexibility and energy-saving and emission-reduction that improve thermal power plant unit.
Description
Technical field
The invention belongs to cogeneration of heat and power technical fields, and in particular to a kind of thermoelectricity decoupled system with heat accumulation
Background technique
Carrying out heat supply using residual heat of electric power plant (low-quality heat) is to promote the important means of power plant thermal efficiency and economy,
Northern China, specific gravity of the power plant with heat supply in all thermal power plants is very big, is effectively utilized residual heat of electric power plant, for energy conservation
Emission reduction is made that significant contribution, but with the development of new situations, cogeneration power plant is facing the challenge.As China is with wind-powered electricity generation
Based on the ratio of renewable energy power generation access power grid of less stable gradually increase, power grid needs thermal power plant's cooperation peak regulation
Demand is just gradually increased, therefore the upsurge of unit flexibility Promotion Transformation is being risen in thermal power plant.For the thermal motor with heat supply
Group is limited by heat demand, and the adjusting of unit generation amount is extremely restricted, and thermal power plant unit will meet generated energy and confession simultaneously
The regulatory demand of heat, it is necessary to carry out thermoelectricity decoupling transformation.Transformation is decoupled for the thermoelectricity for steam power plant, there are varied
Form, actual effect is also different.It has been proposed, for example, that thermoelectricity decoupling transformation is carried out using electric boiler, in unit
When participating in power grid underload peak regulation, using the extra electricity of electric boiler consumption unit simultaneously to heat supply network heat supply, disappeared with taking into account
Subtract electricity volume and meet the target of heat supply network demand, the flexibility of this mode peak regulation is very high, but the thermal efficiency is very low, not
In the case where considering peak regulation subsidy, economy is very poor, and disagrees somebody with energy-saving and emission-reduction original intention and propose to utilize main steam
The method of steam extraction carries out heat supply, however main steam is a kind of energy carrier of high-quality, and energy can be generated by being used directly to progress heat supply
The direct degradation of amount causes energy waste, and a kind of not energy-efficient uneconomic thermoelectricity decoupling means.It is supplied for the above steam power plant
Hot problems faced and demand, the present invention propose a kind of thermoelectricity decoupling system and method with heat accumulation, are realized by fused salt heat accumulation
Thermoelectricity decoupling avoids being conducive to energy-saving and emission-reduction, and can also join using fused salt heat accumulation using high-quality energy in heating system
It is adjusted with the quick load up of unit, increases the flexibility of Turbo-generator Set.
Summary of the invention
The purpose of the present invention is to provide a kind of thermoelectricity decoupled system with heat accumulation, solves the existing thermoelectricity with heat supply
Unit there are problems that the regulatory demand of generated energy and heating load cannot be met simultaneously.
In order to achieve the above object, the technical solution adopted by the present invention is that:
A kind of thermoelectricity decoupled system with heat accumulation provided by the invention, the reheated steam steam extraction including Steam Turbine is arranged in
Fused salt heat reservoir on pipeline, wherein the heat supply network water out of fused salt heat reservoir is connect by heat-exchange system with heat network system；
Fused salt heat reservoir includes low-temperature molten salt storage tank, fused salt storage heater and salt storage tank, wherein fused salt stores
The reheated steam entrance of hot heater and the reheated steam bleed steam pipework of Steam Turbine connect, the high temperature melting of fused salt storage heater
Salt outlet is connect with salt storage tank, and the high-temperature molten salt outlet of salt storage tank is connect with heat-exchange system；Heat-exchange system
Low-temperature molten salt outlet is connect with low-temperature molten salt storage tank；
Heat network system includes heat supply network water heater and hot net water heat supplying pipeline, wherein the low-pressure heating of heat supply network water heater
The low-pressure pumping steam piping connection of steam inlet and Steam Turbine, the heat supply network water out of heat supply network water heater are divided into two pipelines, and one
Pipeline is connect with hot net water heat supplying pipeline, another pipeline is connect preferably by heat-exchange system with hot net water heat supplying pipeline, is changed
Hot systems are fused salt heat supply network water heater, and the outlet of the high-temperature molten salt entrance and salt storage tank of fused salt heat supply network water heater connects
It connects, the low-temperature molten salt outlet of fused salt heat supply network water heater is connect with low-temperature molten salt storage tank；The hot net water of fused salt heat supply network water heater
Entrance is connect with the heat supply network water out of heat supply network water heater；The heat supply network water out and hot net water heating tube of fused salt heat supply network water heater
Road connection.
Preferably, the condenser connection in the drain port and Steam Turbine of heat supply network water heater；
Steam drain connection on the steam port and Steam Turbine of condenser, the condensation water out and condensed water water pump of condenser
Entrance is connected, and the outlet of condensed water water pump is divided into two, wherein one is connected with low-pressure heater group, Ling Yizhi through the 7th valve
Fused salt condensation water heater is connected with through the 6th valve；
The high-temperature molten salt entrance of fused salt condensation water heater is connect with salt storage tank；Fused salt condensation water heater it is low
Temperature molten salt outlet is connect with low-temperature molten salt storage tank；
The condensed water in high temperature outlet of fused salt condensation water heater is connected with oxygen-eliminating device.
Preferably, the high-temperature molten salt outlet of salt storage tank is provided with heat release pump, wherein the outlet of heat release pump is divided into two
Zhi Zhilu a, wherein branch is connect by the first valve with fused salt heat supply network water heater；Another branch by third valve with
The connection of fused salt condensation water heater.
Preferably, the heat supply network water out of heat supply network water heater bifurcates pipeline, wherein a bye-pass is connect with heat-exchange system,
The 5th valve is provided on its connecting line；Another bye-pass is connect with hot net water heat supplying pipeline, is provided on connecting line
4th valve.
Preferably, Steam Turbine includes steam turbine high-pressure cylinder, Steam Turbine Through IP Admission and turbine low pressure cylinder, wherein steamer
The exhaust vent of machine intermediate pressure cylinder is connected with the steam inlet of turbine low pressure cylinder；The communicating pipe is upper and is placed in the upstream of steam tune valve
It is provided with low-pressure pumping steam pipeline, which is connect by low-pressure pumping steam valve with heat network system.
Preferably, the steam inlet of steam turbine high-pressure cylinder is connected with the main-steam outlet of boiler, the steaming of steam turbine high-pressure cylinder
Vapor outlet is connected with the cold reheated steam entrance of boiler, and the reheated steam outlet of boiler is connected with the entrance of Steam Turbine Through IP Admission；
The feed-water intake of boiler is connected with high-pressure heater group, and the feed-water intake of high-pressure heater group is connected by feed pump
There is the condensation water out of oxygen-eliminating device.
Preferably, it is provided with reheated steam bleed steam pipework on boiler and the reheated steam pipeline of Steam Turbine Through IP Admission, this is again
The reheated extraction valve of hot steam pipeline is connect with fused salt hold over system.
Compared with prior art, the beneficial effects of the present invention are:
A kind of thermoelectricity decoupled system with heat accumulation provided by the invention, by being set on the reheated steam pipeline of Steam Turbine
It is equipped with branch connection fused salt heat reservoir, the thermal energy that steam turbine is generated when higher generation load is run is carried out by fused salt
Heat accumulation can supplement heat using fused salt heat release when steam turbine needs to carry out underload peak regulation, and steam turbine power generation power declines
Net heat supply solves the fired power generating unit with heat supply, generated energy and heating load cannot be met simultaneously by existing to realize that thermoelectricity decouples
Regulatory demand the problem of；And then it is of great significance to the flexibility and energy-saving and emission-reduction that improve thermal power plant unit.
Further, during steam turbine fast lifting load, high-temperature molten salt heat-setting water can also be utilized, with
The steam extraction amount for reducing low-pressure heater group, so that steam turbine power generation load be made to be promoted rapidly.
Detailed description of the invention
Fig. 1 is thermoelectricity decoupling system structure diagram of the present invention；
Wherein, 1, salt storage tank 2, heat release pump the 3, first valve 4, fused salt heat supply network water heater 5, low-temperature molten salt
Storage tank 6, storage heat pump 7, fused salt storage heater 9, third valve 10, fused salt condensation water heater 11, heat supply network water heater
12, the 4th valve 13, the 5th valve 15, condenser 16, condensed water water pump 17, the 6th valve 18, oxygen-eliminating device the 19, the 7th
Valve 20, low-pressure heater group 21, low pressure regenerative steam pipe 22, feed pump 23, high-pressure heater group 24, high-pressure extraction
Extraction steam pipe 25, boiler 26, steam turbine high-pressure cylinder 27, reheating extraction valve 28, Steam Turbine Through IP Admission 29, low pressure (LP) cylinder steam enter
Mouth valve 30, low-pressure pumping steam valve 31, turbine low pressure cylinder.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in more detail.
As shown in Figure 1, a kind of thermoelectricity decoupled system with heat accumulation provided by the invention, including salt storage tank 1, heat release
Pump the 2, first valve 3, fused salt heat supply network water heater 4, low-temperature molten salt storage tank 5, storage heat pump 6, fused salt storage heater 7, third valve
Door 9, fused salt condensation water heater 10, heat supply network water heater 11, the 4th valve 12, the 5th valve 13, condenser 15, condensed water water
Pump the 16, the 6th valve 17, oxygen-eliminating device 18, the 7th valve 19, low-pressure heater group 20, low pressure regenerative steam pipe 21, feed pump 22,
High-pressure heater group 23, boiler 25, steam turbine high-pressure cylinder 26, reheating extraction valve 27, is pressed in steam turbine at high-pressure extraction extraction steam pipe 24
Cylinder 28, low pressure (LP) cylinder steam inlet valve 29, low-pressure pumping steam valve 30 and turbine low pressure cylinder 31；
Wherein, low-temperature molten salt storage tank 5 is connect by fused salt storage heater 7 with salt storage tank 1, forms the storage of fused salt
Thermal process；Wherein, the reheated steam entrance in fused salt storage heater 7 and steam turbine reheated steam piping connection, fused salt accumulation of heat
The low-temperature molten salt in reheated steam and low-temperature molten salt storage tank 5 in heater 7 carries out heat exchange, and obtained high-temperature molten salt enters
In salt storage tank 1, and reheated steam condenses into hydrophobic enter in oxygen-eliminating device 18 due to release heat.
A branch pipe, the outlet of the branch pipe are provided on communicating pipe between Steam Turbine Through IP Admission 28 and turbine low pressure cylinder 31
It is connect by low-pressure pumping steam valve 30 with the steam inlet of heat supply network water heater 11, the heat supply network water out and heat of heat supply network water heater 11
Net connection, meanwhile, the hydrophobic outlet of heat supply network water heater 11 is connect with the hydrophobic entrance of condenser 15, forms the heating tube of heat supply network
Road.
Meanwhile the heat supply network water out of heat supply network water heater 11 is divided into two branches, wherein a branch by the 4th valve 12 with
Heat supply network connection；Another branch is connect by the 5th valve 13 with the heat supply network water inlet on fused salt heat supply network water heater 4, fused salt heat supply network
Heat supply network water out on water heater 4 is connect with heat supply network；
Meanwhile the high-temperature molten salt in salt storage tank 1 passes sequentially through heat release pump 2 and the first valve 3 enters fused salt heat
In net water heater 4, heat exchange is carried out with the hot net water not up to standard of the temperature in fused salt heat supply network water heater 4, it is molten after heat release
Salt enters in low-temperature molten salt storage tank 5 by the fused salt outlet on fused salt heat supply network water heater 4；The pipeline is when steam turbine needs
Underload peak regulation, generated output decline are carried out, low-pressure pumping steam amount is insufficient for the heating load demand of heat supply network water heater 11
When complementary heating pipeline.
The steam drain of turbine low pressure cylinder 31 is connected with the steam port on condenser 15, the condensation water out on condenser 15
It is connected with 16 entrance of condensed water water pump, the outlet of condensed water water pump 16 is divided into two, wherein one through the 7th valve 19 and low pressure
The condensation water inlet of heater group 20 is connected, the condensation water inlet of another Zhi Jing six valve 17 and fused salt condensation water heater 10
It is connected；
The condensation water out of low-pressure heater group 20 is connected with the condensation water inlet of oxygen-eliminating device 18, meanwhile, low-pressure heater
The low pressure regenerative steam of group 20 is extracted from turbine low pressure cylinder；
The condensation water out of fused salt condensation water heater 10 is connected with the condensation water inlet of oxygen-eliminating device 18；
Meanwhile 2 outlet of heat release pump is provided with a branch, which passes through third valve 9 and fused salt condensation water heater 10
On the connection of fused salt entrance, the fused salt outlet on fused salt condensation water heater 10 is connect with low-temperature molten salt storage tank 5；The pipeline passes through
Fused salt heat release makes steam turbine fast lifting load.
The condensation water out of oxygen-eliminating device 18 is connected with the entrance of feed pump 22, the outlet and high-pressure heater group of feed pump 22
23 feed-water intakes are connected, and the feedwater outlet of high-pressure heater group 23 is connected with the feed-water intake of boiler 25, the main steam of boiler 25
Outlet is connected with the steam inlet of steam turbine high-pressure cylinder 26, and the steam (vapor) outlet of steam turbine high-pressure cylinder 26 and the cold reheating of boiler 25 are steamed
Vapour entrance is connected, and the reheated steam outlet of boiler 25 is connected with the entrance of Steam Turbine Through IP Admission 28, the row of Steam Turbine Through IP Admission 28
Vapor outlet is connected with the steam inlet of turbine low pressure cylinder 31；Meanwhile Steam Turbine Through IP Admission 28 and turbine low pressure cylinder 31 it
Between communicating pipe on have steam tune valve 29.
The course of work of the invention are as follows:
When steam turbine is when higher generation load is run, fused salt carries out heat accumulation process, utilizes steam turbine reheated steam
It heats low-temperature molten salt and carries out accumulation of heat, storage heat pump extracts low-temperature molten salt out from low-temperature molten salt storage tank 5, adds through fused salt storage heater 7
It is sent after heat to salt storage tank 1, reheated steam becomes hydrophobic after heat release condensation in fused salt storage heater and sends to oxygen-eliminating device
18。
When steam turbine power generation duty ratio is higher, extracted steam from turbine heat capacity is stronger, from steam turbine, low pressure
The low-pressure steam that conduit pipe extracts sends to heat supply network water heater 11, after heat supply network return water is heated to rated temperature in heater 11
Heat supply network heat supply is sent back to through valve 12.
When steam turbine needs to carry out underload peak regulation, and steam turbine power generation power declines, heat supply network is supplemented using fused salt heat release
Thermoelectricity decoupling is realized in heat supply.At this time, the steam extraction amount of the low-pressure pumping steam pipeline through valve 30 is reduced, and is insufficient for hot net water and is added
The heating load demand of hot device 11, heat supply network requirement is not achieved in the heat supply network coolant-temperature gage come out from heat supply network water heater 11, at this point, opening
Valve 13, close valve 12, make from heat supply network water heater 11 come out hot net water using fused salt heat supply network water heater 4 carry out into
The heating of one step, temperature are increased to send after the temperature of heat supply network requirement to heat supply network heat supply, and at the same time, heat release pumps 2 from high-temperature molten salt
Extracting high-temperature fused salt send to fused salt heat supply network water heater 4 and carries out heat release in storage tank 1, and the fused salt after heat release is sent to low-temperature molten salt storage tank
5。
When power grid needs steam turbine fast lifting load, make steam turbine fast lifting load using fused salt heat release.
Due to the hysteresis quality of station boiler Load Regulation, can not quickly provide bigger steam flow makes steam turbine power generation power ascension,
At this point, opening valve 17, valve 19 is turned down, reduces the condensing water flow for flowing through low-pressure heater group 20, to quickly reduce low
Press the flow of regenerative steam 21, it is meant that the regenerative steam amount extracted from turbine low pressure cylinder is reduced rapidly, to flow through vapour
The acting steam flow of turbine low pressure (LP) cylinder increases rapidly, and steam turbine power generation load is promoted rapidly.And it is solidifying to be sent to fused salt through valve 17
The condensed water for bearing water heater 10 is sent after being heated by fused salt to oxygen-eliminating device, to ensure that the condensing water temperature for being sent into oxygen-eliminating device
Stablize.In the process, the extracting high-temperature fused salt from salt storage tank 1 of heat release pump 2, send to fused salt condensed water through valve 9 and adds
Hot device 10 carries out heat release, and low-temperature molten salt returns to low-temperature molten salt storage tank after heat release.
Subordinate list is the major parameter of the heating system used in this example, and the present invention does not make restriction to this parameter, this
The concrete application of patent can be adjusted because of the parameter of practical power plant difference.
Subordinate list heating system major parameter table
| Power plant's capacity | 600000 kW |
| Area of heat-supply service | 5600000 m2 |
| Salt storage tank volume | 18000m3 |
| Low-temperature molten salt tank volume | 16000m3 |
| High-temperature molten salt heat accumulation temperature | 430℃ |
| Low-temperature molten salt temperature | 180℃ |
| Heat supply network return water temperature | 38~44 DEG C |
| Heat supply network water flow | 6000t/h |
| Reheat steam temperature | 540℃ |
| Heat supply extraction pressure | 0.5~0.8MPa |
Claims (8)
1. a kind of thermoelectricity decoupled system with heat accumulation, which is characterized in that the reheated steam extraction steam pipe including Steam Turbine is arranged in
The fused salt heat reservoir of road, wherein fused salt heat reservoir is connect by heat-exchange system with heat network system；
Fused salt heat reservoir includes low-temperature molten salt storage tank (5), fused salt storage heater (7) and salt storage tank (1), wherein
The reheated steam entrance of fused salt storage heater (7) and the reheated steam bleed steam pipework of Steam Turbine connect, fused salt accumulation of heat heating
The high-temperature molten salt outlet of device (7) is connect with salt storage tank (1), the high-temperature molten salt outlet and heat exchange of salt storage tank (1)
System connection；The low-temperature molten salt outlet of heat-exchange system is connect with low-temperature molten salt storage tank (5)；
Heat network system includes heat supply network water heater (11) and hot net water heat supplying pipeline, wherein the low pressure of heat supply network water heater (11)
The heat supply network water out of the low-pressure pumping steam piping connection of heating steam inlet and Steam Turbine, heat supply network water heater (11) is divided into two pipes
Road, a pipeline are connect with hot net water heat supplying pipeline, another pipeline is connect by heat-exchange system with hot net water heat supplying pipeline.
2. a kind of thermoelectricity decoupled system with heat accumulation according to claim 1, which is characterized in that heat-exchange system is fused salt heat
The high-temperature molten salt entrance of net water heater (4), fused salt heat supply network water heater (4) is connect with the outlet of salt storage tank (1), is melted
The low-temperature molten salt outlet of salt heat supply network water heater (4) is connect with low-temperature molten salt storage tank (5)；The heat of fused salt heat supply network water heater (4)
Net water inlet is connect with the heat supply network water out of heat supply network water heater (11)；Its heat supply network water out is connect with hot net water heat supplying pipeline.
3. a kind of thermoelectricity decoupled system with heat accumulation according to claim 1, which is characterized in that heat supply network water heater (11)
Drain port and Steam Turbine in condenser (15) connection；
Steam drain connection on the steam port and Steam Turbine of condenser (15), the condensation water out and condensed water of condenser (15)
Water pump (16) entrance be connected, the outlet of condensed water water pump (16) is divided into two, wherein one be connected with through the 7th valve (19) it is low
It presses heater group (20), another six valve of Zhi Jing (17) is connected with fused salt condensation water heater (10)；
The high-temperature molten salt entrance of fused salt condensation water heater (10) is connect with salt storage tank (1)；Fused salt condensation water heater
(10) low-temperature molten salt outlet is connect with low-temperature molten salt storage tank (5)；
The condensed water in high temperature outlet of fused salt condensation water heater (10) is connected with oxygen-eliminating device (18).
4. a kind of thermoelectricity decoupled system with heat accumulation according to claim 3, which is characterized in that salt storage tank (1)
High-temperature molten salt outlet be provided with heat release pump (2), wherein the outlet of heat release pump (2) is divided into two branches, wherein branch is logical
The first valve (3) is crossed to connect with fused salt heat supply network water heater (4)；Another branch is added by third valve (9) with fused salt condensed water
Hot device (10) connection.
5. a kind of thermoelectricity decoupled system with heat accumulation according to claim 1, which is characterized in that heat supply network water heater (11)
Heat supply network water out and heat-exchange system between connecting line on be provided with the 5th valve (13)；The heat of heat supply network water heater (11)
The 4th valve (12) is provided on connecting line between net water out and hot net water heat supplying pipeline.
6. a kind of thermoelectricity decoupled system with heat accumulation according to claim 1, which is characterized in that Steam Turbine includes steamer
Machine high pressure cylinder (26), Steam Turbine Through IP Admission (28) and turbine low pressure cylinder (31), wherein the steam discharge of Steam Turbine Through IP Admission (28) goes out
Mouth is connected with the steam inlet of turbine low pressure cylinder (31)；Between Steam Turbine Through IP Admission (28) and turbine low pressure cylinder (31)
There is steam tune valve (29) on communicating pipe, go up the communicating pipe and the upstream for being placed in steam tune valve (29) is provided with low-pressure pumping steam pipeline,
The low-pressure pumping steam pipeline is connect by low-pressure pumping steam valve (30) with heat network system.
7. a kind of thermoelectricity decoupled system with heat accumulation according to claim 6, which is characterized in that steam turbine high-pressure cylinder (26)
Steam inlet be connected with the main-steam outlets of boiler (25), the steam (vapor) outlet of steam turbine high-pressure cylinder (26) is cold with boiler (25)
Reheated steam entrance is connected, and the reheated steam outlet of boiler (25) is connected with the entrance of Steam Turbine Through IP Admission (28)；
The feed-water intake of boiler (25) is connected with high-pressure heater group (23), and the feed-water intake of high-pressure heater group (23) is by giving
Water pump (22) is connected with the condensation water out of oxygen-eliminating device (18).
8. a kind of thermoelectricity decoupled system with heat accumulation according to claim 7, which is characterized in that boiler (25) and steam turbine
It is provided with reheated steam bleed steam pipework on the reheated steam pipeline of intermediate pressure cylinder (28), the reheated extraction valve of reheated steam pipeline
(27) it is connect with fused salt hold over system.
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Application publication date: 20190104 |