CN104482579B - Air-cooled Unit double-backpressure circulating water heating - Google Patents

Air-cooled Unit double-backpressure circulating water heating Download PDF

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Publication number
CN104482579B
CN104482579B CN201410749778.2A CN201410749778A CN104482579B CN 104482579 B CN104482579 B CN 104482579B CN 201410749778 A CN201410749778 A CN 201410749778A CN 104482579 B CN104482579 B CN 104482579B
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CN
China
Prior art keywords
air
cylinder
valve
low pressure
condensate system
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201410749778.2A
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Chinese (zh)
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CN104482579A (en
Inventor
周国锋
高鹏
刘金庭
宋涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chaoyang Yanshan Lake Power Generation Co., Ltd.
Original Assignee
SHANDONG HONGAO ELECTRIC POWER TECHNOLOGY Co Ltd
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Priority to CN201410749778.2A priority Critical patent/CN104482579B/en
Publication of CN104482579A publication Critical patent/CN104482579A/en
Application granted granted Critical
Publication of CN104482579B publication Critical patent/CN104482579B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a kind of Air-cooled Unit double-backpressure circulating water heating, including low pressure (LP) cylinder A and low pressure (LP) cylinder B, the outlet of low pressure (LP) cylinder A gland steam exhausters is connected by exhaust steam valve A with condenser entrance, condenser outlet connects condensate system A by condensate valve, the outlet of low pressure (LP) cylinder B gland steam exhausters connects Air-Cooling Island B by exhaust steam valve B, the outlet pipe of condensate system B connection Air-Cooling Islands B, condensate system A, condensate system B are connected with water out is condensed.The present invention is run by Air-cooled Unit double-backpressure circulating water heating, realize that 600MW Air-cooled Units can reclaim a part of steam discharge of low pressure (LP) cylinder and lose, and do not influence the mechanical efficiency and gross coal consumption rate of another part steam discharge, it is reasonable in design, energy saving, improves unit efficiency.

Description

Air-cooled Unit double-backpressure circulating water heating
Technical field
The present invention relates to heat supply process field, and in particular to a kind of Air-cooled Unit double-backpressure circulating water heating.
Background technology
Air-cooled Unit high back pressure circulating water heating is to carry out high back pressure operation using the original design high back pressure of unit, is reclaimed low Cylinder pressure steam discharge loses, and 600MW Air-cooled Units are double low pressure (LP) cylinder designs, when the operation of high back pressure circulating water heating is carried out, due to row Vapour amount is big, and quantity of circulating water and area of heat-supply service are smaller, causes that a part of steam discharge loss can only be reclaimed.High back pressure circulating water heating runs When unit back pressuce 35kPa is run to by the 13kPa for designing, because low pressure (LP) cylinder steam discharge can not be reclaimed completely, the unrecovered row of unit Vapour equally runs 35kPa high back pressures and enters Air-Cooling Island, causes low mechanical efficiency, gross coal consumption rate increase, energy waste, reduces height The benefit of back pressure circulating water heating.
The content of the invention
To make up the deficiencies in the prior art, the present invention provides a kind of energy saving, reasonable in design, workmanship efficiency high air cooling Unit double-backpressure circulating water heating.
The present invention is achieved through the following technical solutions:
A kind of Air-cooled Unit double-backpressure circulating water heating, including thermal power plant unit, thermal power plant unit include low pressure (LP) cylinder A and low Cylinder pressure B, it is characterized in that:The outlet of low pressure (LP) cylinder A gland steam exhausters is connected by exhaust steam valve A with condenser entrance, condenser outlet Condensate system A is connected by condensate valve, the outlet of low pressure (LP) cylinder B gland steam exhausters connects Air-Cooling Island B, condenses water system by exhaust steam valve B The outlet pipe of system B connection Air-Cooling Islands B, condensate system A, condensate system B are connected with water out is condensed.
Air-cooled Unit double-backpressure circulating water heating of the invention, the outlet of low pressure (LP) cylinder A gland steam exhausters is by exhaust steam valve C and sky Cool island A is connected, and condensate system A is connected with the outlet pipe of Air-Cooling Island A.
Air-cooled Unit double-backpressure circulating water heating of the invention, heat supply network return pipe connects condenser by valve A Water inlet pipe, heat supply network feed pipe is connected and by the outlet pipe of valve B connection condensers with heat supply initial station.
Air-cooled Unit double-backpressure circulating water heating of the invention, valve is provided between heat supply network return pipe and heat supply initial station C, valve C are located between condenser water inlet pipe and outlet pipe.
The beneficial effects of the invention are as follows:The present invention is run by Air-cooled Unit double-backpressure circulating water heating, realizes 600MW Air-cooled Unit can reclaim a part of steam discharge loss of low pressure (LP) cylinder, and not influence the mechanical efficiency and generating coal of another part steam discharge Consumption, reasonable in design, energy saving improves unit efficiency.
Brief description of the drawings
The invention will now be described in further detail with reference to the accompanying drawings.
Accompanying drawing 1 is structural representation of the invention.
In figure, 1 exhaust steam valve C, 2 exhaust steam valve A, 3 condensate valves, 4 valve A, 5 valve B, 6 valve C, 7 exhaust steam valve B, 8 low pressure Cylinder A, 9 low pressure (LP) cylinder B, 10 condensers, 11 Air-Cooling Island A, 12 condensate system A, 13 heat supplies at first stop, 14 Air-Cooling Island B, 15 condense water systems System B, 16 heat supply network return pipes, 17 heat supply network feed pipes, 18 condense water out.
Specific embodiment
Accompanying drawing is a kind of specific embodiment of the invention.The embodiment includes thermal power plant unit, and thermal power plant unit includes low pressure The outlet of cylinder A8 and low pressure (LP) cylinder B9, low pressure (LP) cylinder A8 gland steam exhauster is connected by exhaust steam valve A2 with the entrance of condenser 10, and condenser 10 is exported Condensate system A12 is connected by condensate valve 3, the outlet of low pressure (LP) cylinder A8 gland steam exhausters is connected by exhaust steam valve C1 with Air-Cooling Island A11, Condensate system A12 is connected with the outlet pipe of Air-Cooling Island A11, and the outlet of low pressure (LP) cylinder B9 gland steam exhausters connects Air-Cooling Island by exhaust steam valve B7 The outlet pipe of B14, condensate system B15 connection Air-Cooling Island B14, condensate system A12, condensate system B15 and condensate go out Mouthfuls 18 are connected, and heat supply network return pipe 16 connects the water inlet pipes of condenser 10, heat supply network feed pipe 17 and heat supply initial station 13 by valve A4 It is connected and by the outlet pipe of valve B5 connection condensers 10, valve C6 is provided between heat supply network return pipe 16 and heat supply initial station 13, Valve C6 is located between the water inlet pipe of condenser 10 and outlet pipe.
During heat supply running, low pressure (LP) cylinder A8 operation back pressures are 33kPa, and low pressure (LP) cylinder B9 operation back pressures are 13kPa, heat supply running When close exhaust steam valve 1 and valve C6, open exhaust steam valve A2, B7, condensate valve 3, valve 4,5, low pressure (LP) cylinder A8 steam discharges enter heat supply Condenser 10, heat supply network backwater enters condenser 10, and heat supply network backwater is once heated, and it is first that the hot net water after heating enters heat supply Stand, 13 carry out reheating by drawing gas, the hot water after heating enters heat supply network, low pressure (LP) cylinder B9 steam discharges enter into original Air-Cooling Island B14 Row cooling, it is ensured that the loss of low pressure (LP) cylinder steam discharge reclaims complete.

Claims (1)

1. a kind of Air-cooled Unit double-backpressure circulating water heating, including thermal power plant unit, thermal power plant unit includes low pressure (LP) cylinder A(8)With Low pressure (LP) cylinder B(9), it is characterised in that:Low pressure (LP) cylinder A(8)Gland steam exhauster outlet passes through exhaust steam valve A(2)With condenser(10)Entrance is connected, Condenser(10)Outlet passes through condensate valve(3)Connection condensate system A(12), low pressure (LP) cylinder B(9)Gland steam exhauster outlet passes through steam discharge Valve B(7)Connection Air-Cooling Island B(14), condensate system B(15)Connection Air-Cooling Island B(14)Outlet pipe, condensate system A(12)、 Condensate system B(15)With condensation water out(18)It is connected;Low pressure (LP) cylinder A(8)Gland steam exhauster outlet passes through exhaust steam valve C(1)With air cooling Island A(11)Connection, condensate system A(12)With Air-Cooling Island A(11)Outlet pipe connection;Heat supply network return pipe(16)By valve A (4)Connection condenser(10)Water inlet pipe, heat supply network feed pipe(17)With heat supply at first stop(13)It is connected and by valve B(5)Connection Condenser(10)Outlet pipe;Heat supply network return pipe(16)With heat supply at first stop(13)Between be provided with valve C(6), valve C(6)Position In condenser(10)Between water inlet pipe and outlet pipe.
CN201410749778.2A 2014-12-10 2014-12-10 Air-cooled Unit double-backpressure circulating water heating Expired - Fee Related CN104482579B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410749778.2A CN104482579B (en) 2014-12-10 2014-12-10 Air-cooled Unit double-backpressure circulating water heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410749778.2A CN104482579B (en) 2014-12-10 2014-12-10 Air-cooled Unit double-backpressure circulating water heating

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CN104482579A CN104482579A (en) 2015-04-01
CN104482579B true CN104482579B (en) 2017-06-16

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111287811B (en) * 2020-03-31 2021-06-15 西安热工研究院有限公司 Vacuum online optimization method for optimal operation of high-backpressure step heating unit
CN111520792B (en) * 2020-04-29 2021-07-30 国电龙源节能技术有限公司 Exhaust steam waste heat recovery and heat supply method for direct air cooling unit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2509929C (en) * 2002-12-18 2011-10-18 Pratt & Whitney Canada Corp. Fluid flow actuated flapper valve
CN103016082A (en) * 2012-12-25 2013-04-03 华北电力大学 300MW-capacity-level low vacuum heat supply steam turbine system and adjusting method thereof
CN203114363U (en) * 2013-01-08 2013-08-07 山东泓奥电力科技有限公司 Large thermal generator set high back pressure circulating water heat supplying energy-saving system
CN203335149U (en) * 2013-07-23 2013-12-11 中国电力工程顾问集团华北电力设计院工程有限公司 Mixed type heating structure of moisture cooling air cooling unit condensation water
CN203810510U (en) * 2014-05-19 2014-09-03 山东泓奥电力科技有限公司 High backpressure and anti-freezing air cooling island combined operation heating system for air cooling unit
CN204345766U (en) * 2014-12-10 2015-05-20 山东泓奥电力科技有限公司 The two back pressure circulating water heating system of Air-cooled Unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2509929C (en) * 2002-12-18 2011-10-18 Pratt & Whitney Canada Corp. Fluid flow actuated flapper valve
CN103016082A (en) * 2012-12-25 2013-04-03 华北电力大学 300MW-capacity-level low vacuum heat supply steam turbine system and adjusting method thereof
CN203114363U (en) * 2013-01-08 2013-08-07 山东泓奥电力科技有限公司 Large thermal generator set high back pressure circulating water heat supplying energy-saving system
CN203335149U (en) * 2013-07-23 2013-12-11 中国电力工程顾问集团华北电力设计院工程有限公司 Mixed type heating structure of moisture cooling air cooling unit condensation water
CN203810510U (en) * 2014-05-19 2014-09-03 山东泓奥电力科技有限公司 High backpressure and anti-freezing air cooling island combined operation heating system for air cooling unit
CN204345766U (en) * 2014-12-10 2015-05-20 山东泓奥电力科技有限公司 The two back pressure circulating water heating system of Air-cooled Unit

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CB03 Change of inventor or designer information

Inventor after: Zhou Guofeng

Inventor after: Liu Lihua

Inventor after: Gao Peng

Inventor after: Liu Jinting

Inventor after: Song Tao

Inventor after: Sun Guijun

Inventor before: Zhou Guofeng

Inventor before: Gao Peng

Inventor before: Liu Jinting

Inventor before: Song Tao

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20171227

Address after: High tech Development Zone in Ji'nan City, Shandong province 250101 Shun Road No. 359 Qing three century wealth center block B2 room 603

Co-patentee after: Chaoyang Yanshan Lake Power Generation Co., Ltd.

Patentee after: Shandong Hongao Electric Power Technology Co., Ltd.

Address before: High tech Development Zone in Ji'nan City, Shandong province 250101 Shun Road No. 359 Qing three century wealth center block B2 room 603

Patentee before: Shandong Hongao Electric Power Technology Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170616

Termination date: 20191210