CN205351277U - A back pressure steam turbine thermodynamic system for isolated network operation - Google Patents

A back pressure steam turbine thermodynamic system for isolated network operation Download PDF

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Publication number
CN205351277U
CN205351277U CN201620056385.8U CN201620056385U CN205351277U CN 205351277 U CN205351277 U CN 205351277U CN 201620056385 U CN201620056385 U CN 201620056385U CN 205351277 U CN205351277 U CN 205351277U
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China
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connects
steam
water
boiler
oxygen
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CN201620056385.8U
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Chinese (zh)
Inventor
陈勋瑜
陈云芬
张小勇
熊建文
施爱阳
费振伟
刘明强
刘贺丞
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China Sinogy Electric Engineering Co Ltd
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China Sinogy Electric Engineering Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

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Abstract

The utility model discloses a back pressure steam turbine thermodynamic system for isolated network operation, including the boiler, two output port of boiler connect the steam inlet of steam turbine and the input port of pressure reducer and attemperator respectively, and the output port who wherein connects the steam turbine connects industry and supplies vapour to be responsible for F, and the output port of pressure reducer and attemperator passes through, and three -way pipe connects the oxygen -eliminating device respectively and F is responsible for to industry confession vapour, industry supplies vapour to be responsible for a branch road connection steam water heat exchanger's on the F input. When this practicality is used for isolated network operation, can keeps balance industrial user's power consumption and with undulant change the that vapour was measured, can save relevant corollary equipment pipelines such as one set of condensing formula or bleeding steam turbine again, reduce unit area, reduce equipment and pipeline complexity, practice thrift engineering cost. In addition, boiler steam still can be used to vapour for the oxygen -eliminating device, has reduced fuel gas auxiliary boiler's use cost.

Description

A kind of back pressure turbine therrmodynamic system for isolated power grid
Technical field
This utility model relates to a kind of back pressure turbine therrmodynamic system, specifically a kind of back pressure turbine therrmodynamic system for isolated power grid.
Background technology
At present, steam power plant is when there being the isolated power grid of heat demand, according to prior art, often adopts sucking condensing turbine.But owing to required evaporation capacity for engine is very big under some operating mode, many electricity cannot be carried again outward, is difficult to choose the sucking condensing turbine of suitable capacity.
And back pressure turbine has the advantage that the thermal efficiency is high, it is generally used for having in the steam power plant of stable heating demand, but generally need to configure together with condensing-type or sucking condensing turbine.But when total evaporation capacity for engine and generated energy are too small, the unit configuring more than two then causes that unit floor space is big, and a cost of investment height compares waste.If only arranging a back pressure turbine, adopt conventional therrmodynamic system cannot balance again evaporation capacity for engine and delivery.
Utility model content
The purpose of this utility model is in that to provide a kind of back pressure turbine therrmodynamic system for isolated power grid, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
A kind of back pressure turbine therrmodynamic system for isolated power grid, including boiler, steam turbine, oxygen-eliminating device, vapor-water heat exchanger, condensate tank, condensation water transportation water pump, shaft sealing cooler, boiler feed pump A, boiler feed pump B and pressure reducer and attemperator, two output ports of described boiler connect the steam inlet of steam turbine and the input port of pressure reducer and attemperator respectively, the output port wherein connecting steam turbine connects industry main feed header F, and the output port of pressure reducer and attemperator connects oxygen-eliminating device and industry main feed header F respectively by triplate line;A branch road on described industry main feed header F connects the input of vapor-water heat exchanger, the outfan of vapor-water heat exchanger connects condensate tank water inlet, and the outlet of condensate tank connects oxygen-eliminating device by condensing water transportation water pump, the input of described oxygen-eliminating device connects demineralized water water pipe C by shaft sealing cooler, outfan bottom described oxygen-eliminating device connects boiler feed pump A and boiler feed pump B, the water return pipeline of boiler feed pump A and boiler feed pump B outfan can pass through pipeline and connect the input of oxygen-eliminating device, and the outfan of boiler feed pump A and boiler feed pump B connects boiler respectively, superheater sparge pipe H and pressure reducer and attemperator.
As further program of the utility model: described industry main feed header F connects industrial user's admission end mouth by pipe network, and the steam output end mouth of industrial user connects oxygen-eliminating device by vapour coagulation hydroenergy backwater pipeline G.
As further program of the utility model: described shaft sealing cooler gland steam pipeline D connects drain tank by steam drainage pipeline E.
As further program of the utility model: the secondary side of described vapor-water heat exchanger connects the cooling water pipeline B and cooling tower water return pipeline A of steam power plant's cooling tower.
As further program of the utility model: the primary side of described vapor-water heat exchanger connects condensate tank.
Compared with prior art, the beneficial effects of the utility model are: back pressure turbine high for the thermal efficiency can be exploited separately for the Isolated Network System of heat demand by this practicality.When factory steam is more than commercial power, the excess steam that boiler produces supplements to industry steam supply after can passing through the direct pressure and temperature reducing of arm on main steam pipe;When factory steam is less than commercial power, the unnecessary exhaust steam of steam turbine outlet can be passed through the arm on industry main feed header and enter vapor-water heat exchanger cooling.It addition, steam is used for oxygen-eliminating device also by the arm on main steam pipe after decompression desuperheat during boiler startup.So, when back pressure turbine is for isolated power grid, the fluctuation change of industrial user's power consumption and steam consumption can be balanced, the relevant corollary equipment pipelines such as a set of condensing-type or extraction turbine can be saved again, decrease unit floor space, reduce equipment and pipeline complexity, save construction costs.Additionally, Boiler Steam can be additionally used in oxygen-eliminating device vapour, decrease the use cost of fuel-firing gas-firing starting trouble.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: boiler 1, steam turbine 2, oxygen-eliminating device 3, vapor-water heat exchanger 4, condensate tank 5, condensation water transportation water pump 6, shaft sealing cooler 7, boiler feed pump A8, boiler feed pump B9, pressure reducer and attemperator 10, CWR road A, cooling water pipeline B, demineralized water water pipe C, gland steam pipeline D, steam drainage pipeline E, industry steam supply pipeline F, industry steam supply coagulation hydroenergy backwater pipeline G, superheater water pipe H.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1, in this utility model embodiment, a kind of back pressure turbine therrmodynamic system for isolated power grid, including boiler 1, steam turbine 2, oxygen-eliminating device 3, vapor-water heat exchanger 4, condensate tank 5, condense water transportation water pump 6, shaft sealing cooler 7, boiler feed pump A8, boiler feed pump B9 and pressure reducer and attemperator 10, two output ports of described boiler 1 connect the steam inlet of steam turbine 2 and the input port of pressure reducer and attemperator 10 respectively, the output port wherein connecting steam turbine 2 connects industry main feed header F, and the output port of pressure reducer and attemperator 10 connects oxygen-eliminating device 3 and industry main feed header F respectively by triplate line;A branch road on described industry main feed header F connects the input of vapor-water heat exchanger 4, the outfan of vapor-water heat exchanger 4 connects condensate tank 5 water inlet, and the outlet of condensate tank 5 connects oxygen-eliminating device 3 by condensing water transportation water pump 6, described industry main feed header F connects industrial user's admission end mouth by pipe network, and the steam output end mouth of industrial user connects oxygen-eliminating device 3 by vapour coagulation hydroenergy backwater pipeline G.
The input of described oxygen-eliminating device 3 is also connected with shaft sealing cooler 7 outfan, water in demineralized water water pipe C is entered oxygen-eliminating device 3 in shaft sealing cooler 7 after the steam preheating in gland steam pipeline D, enter drain tank by steam drainage pipeline E after the steam in gland steam pipeline D is cooled.
Outfan bottom described oxygen-eliminating device 3 connects boiler feed pump A8 and boiler feed pump B9, the water return pipeline of boiler feed pump A8 and boiler feed pump B9 outfan can pass through pipeline and connect the input of oxygen-eliminating device 3, realize inner loop, and the outfan of boiler feed pump A8 and boiler feed pump B9 connects boiler 1, superheater sparge pipe H and pressure reducer and attemperator 10 respectively.
Operation principle of the present utility model is:
The high temperature and high pressure steam that boiler 1 produces is divided into two-way, and after steam turbine 2 acting is gone on a road, steam discharge imports industry main feed header F after desuperheat;Another road through being directly divided into again two-way after pressure reducer and attemperator 10 reduces pressure desuperheat, and oxygen-eliminating device 3 is gone on a road, and another road imports industry main feed header F.After vapor-water heat exchanger 4 heat exchange is gone on industry main feed header F Shang Fen mono-road, condensate-water polishing, to condensate tank 5, is back to oxygen-eliminating device 3 through condensing water transportation water pump 6.Industry steam supply is delivered to industrial user through outside ductwork and is used by industry main feed header F, and the condensation water after using also returns to oxygen-eliminating device 3 through industry steam supply condensate return pipe G.
Water in demineralized water filling pipe C is entered oxygen-eliminating device 3 in shaft sealing cooler 7 after the steam preheating in gland steam pipe D, enter drain tank through steam drainage pipe E after the steam in gland steam pipe D is cooled.Boiler feed pump A8 and boiler feed pump B9 it is connected to bottom oxygen-eliminating device 3, boiler feed pump A8 and boiler feed pump B9 exports backwater and returns oxygen-eliminating device 3, water supply is divided into three tunnels, one tunnel is delivered to boiler 1, one tunnel is delivered to superheater and is used as the hot device water spray of superheater sparge pipe H, and another road is delivered to pressure reducer and attemperator 10 and is used as desuperheating water.
The high temperature and high pressure steam that described boiler 1 produces, when commercial power is less than factory steam, unnecessary steam directly enters oxygen-eliminating device 3 after pressure reducer and attemperator 10 reduces pressure desuperheat by the arm on main steam pipe and industry main feed header F supplements and uses.
The industrial steam supply of described industry main feed header F, when commercial power is more than factory steam, unnecessary steam is gone to vapor-water heat exchanger 4 by the arm on industry main feed header F and is cooled down.
The steam supply of described boiler 1, is directly reduced pressure desuperheat by the arm on main steam pipe, and what can meet oxygen-eliminating device 3 when boiler 1 starts uses vapour demand, decreases the use cost of fuel-firing gas-firing starting trouble.
The secondary side of described vapor-water heat exchanger 4 is cooling water pipeline B and cooling tower water return pipeline A from steam power plant's cooling tower, makes full use of existing cooling tower equipment and pipeline.
Steam condensate after the primary side industry steam supply of described vapor-water heat exchanger 4 is cooled is recycled to condensate tank 5, delivers to oxygen-eliminating device 3 as boiler 1 moisturizing use then through condensing water transportation water pump 6, decreases desalination water consumption, reduce cost of water treatment.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and when without departing substantially from spirit of the present utility model or basic feature, it is possible to realize this utility model in other specific forms.Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in this utility model.Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.

Claims (5)

1. the back pressure turbine therrmodynamic system for isolated power grid, including boiler, steam turbine, oxygen-eliminating device, vapor-water heat exchanger, condensate tank, condensation water transportation water pump, shaft sealing cooler, boiler feed pump A, boiler feed pump B and pressure reducer and attemperator, it is characterized in that, two output ports of described boiler connect the steam inlet of steam turbine and the input port of pressure reducer and attemperator respectively, the output port wherein connecting steam turbine connects industry main feed header F, and the output port of pressure reducer and attemperator connects oxygen-eliminating device and industry main feed header F respectively by triplate line;A branch road on described industry main feed header F connects the input of vapor-water heat exchanger, the outfan of vapor-water heat exchanger connects condensate tank water inlet, and the outlet of condensate tank connects oxygen-eliminating device by condensing water transportation water pump, the input of described oxygen-eliminating device connects demineralized water water pipe C by shaft sealing cooler, outfan bottom described oxygen-eliminating device connects boiler feed pump A and boiler feed pump B, the water return pipeline of boiler feed pump A and boiler feed pump B outfan can pass through pipeline and connect the input of oxygen-eliminating device, and the outfan of boiler feed pump A and boiler feed pump B connects boiler respectively, superheater sparge pipe H and pressure reducer and attemperator.
2. a kind of back pressure turbine therrmodynamic system for isolated power grid according to claim 1, it is characterized in that, described industry main feed header F connects industrial user's admission end mouth by pipe network, and the steam output end mouth of industrial user connects oxygen-eliminating device by vapour coagulation hydroenergy backwater pipeline G.
3. a kind of back pressure turbine therrmodynamic system for isolated power grid according to claim 1, it is characterised in that described shaft sealing cooler gland steam pipeline D connects drain tank by steam drainage pipeline E.
4. a kind of back pressure turbine therrmodynamic system for isolated power grid according to claim 1, it is characterised in that the secondary side of described vapor-water heat exchanger connects the cooling water pipeline B and cooling tower water return pipeline A of steam power plant's cooling tower.
5. a kind of back pressure turbine therrmodynamic system for isolated power grid according to claim 1, it is characterised in that the primary side of described vapor-water heat exchanger connects condensate tank.
CN201620056385.8U 2016-01-20 2016-01-20 A back pressure steam turbine thermodynamic system for isolated network operation Expired - Fee Related CN205351277U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106150565A (en) * 2016-07-14 2016-11-23 成都成发科能动力工程有限公司 A kind of peak cutting device for power station orphan's net stable operation and control method thereof
CN108005740A (en) * 2017-10-20 2018-05-08 北京首钢股份有限公司 A kind of co-generation unit
CN108879791A (en) * 2017-05-12 2018-11-23 中国石油化工股份有限公司 A kind of isolated network vapour electric equilibrium method
CN112832876A (en) * 2020-12-31 2021-05-25 威立雅(哈尔滨)热电有限公司 Method for carrying out isolated network starting operation of steam turbine generator through automatic control system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106150565A (en) * 2016-07-14 2016-11-23 成都成发科能动力工程有限公司 A kind of peak cutting device for power station orphan's net stable operation and control method thereof
CN108879791A (en) * 2017-05-12 2018-11-23 中国石油化工股份有限公司 A kind of isolated network vapour electric equilibrium method
CN108005740A (en) * 2017-10-20 2018-05-08 北京首钢股份有限公司 A kind of co-generation unit
CN112832876A (en) * 2020-12-31 2021-05-25 威立雅(哈尔滨)热电有限公司 Method for carrying out isolated network starting operation of steam turbine generator through automatic control system

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Granted publication date: 20160629

Termination date: 20210120