CN107013262A - It is a kind of to cut off heating system and method that low pressure (LP) cylinder enters vapour - Google Patents
It is a kind of to cut off heating system and method that low pressure (LP) cylinder enters vapour Download PDFInfo
- Publication number
- CN107013262A CN107013262A CN201710386956.3A CN201710386956A CN107013262A CN 107013262 A CN107013262 A CN 107013262A CN 201710386956 A CN201710386956 A CN 201710386956A CN 107013262 A CN107013262 A CN 107013262A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- low pressure
- vapour
- control valve
- steam
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- 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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- 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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- 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
- F01K13/02—Controlling, e.g. stopping or starting
-
- 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
- F01K17/025—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic in combination with at least one gas turbine, e.g. a combustion gas turbine
Abstract
Heating system and method that low pressure (LP) cylinder enters vapour are cut off the invention discloses a kind of, including intermediate pressure cylinder, intermediate pressure cylinder connects low pressure (LP) cylinder, low pressure (LP) cylinder connects condenser, control valve group is provided with pipeline between intermediate pressure cylinder and low pressure (LP) cylinder, cooling steam system is passed through between control valve group and low pressure (LP) cylinder, differential pressure flowmeter is provided with cooling steam system, excision low pressure (LP) cylinder enters automotive row during can realizing steam turbine operation by control valve group, and turbine low pressure cylinder can be greatly reduced and enters steam flow amount, improve the heat supply pump gas ablity and performance driving economy of unit, realize steam turbine taking over seamlessly from steam extraction and condensing formula heat-supplying mode to high back pressure heat-supplying mode, make the characteristics of unit has the flexible condensing bleeder turbine unit method of operation and strong High Back Pressure Steam Turbine Units heat capacity concurrently.
Description
Technical field
The invention belongs to steam turbine operation technical field, and in particular to a kind of excision low pressure (LP) cylinder enters heating system and the side of vapour
Method.
Background technology
Currently, vapour is jeopardized to avoid turbine low pressure cylinder linear leaf from producing air blast, flutter etc. under the conditions of little volume flow
The problem of turbine safe operation, when often requiring that steam turbine operation, low pressure (LP) cylinder exhaust steam flow is not less than its limit current value (typically about
For 10%~30% or so of declared working condition main steam flow).For thermal power plant unit, by the shadow of low pressure (LP) cylinder steam flow limit value
Ring, steam turbine heat supply pump gas ablity is restricted.
The content of the invention
It is above-mentioned not enough there is provided the heating system and method that a kind of excision low pressure (LP) cylinder enters vapour it is an object of the invention to overcome,
Enter vapour by cutting off low pressure (LP) cylinder in steam turbine operation, be only passed through a small amount of cooling steam, realize that steam turbine excision low pressure (LP) cylinder enters vapour
Operation, improves unit heat supply pump gas ablity.
In order to achieve the above object, a kind of to cut off the heating system that low pressure (LP) cylinder enters vapour, including intermediate pressure cylinder, intermediate pressure cylinder connection is low
Cylinder pressure, low pressure (LP) cylinder connection condenser is provided with into vapour control valve, cooling is steamed on the mesolow communicating pipe between intermediate pressure cylinder and low pressure (LP) cylinder
Vapour system is introduced to low pressure (LP) cylinder from the position entered between vapour control valve and low pressure (LP) cylinder.
The cooling steam system accesses the through-flow portion of low pressure (LP) cylinder from the steam inlet pipe road entered between vapour control valve and low pressure (LP) cylinder
Point.
Flow control valve group is provided with the cooling steam system.
Flowmeter is provided with the cooling steam system.
It is a kind of to cut off the method for work that low pressure (LP) cylinder enters the heating system of vapour, comprise the following steps：
Step one, when unit is run with steam extraction and condensing heat-supplying mode, heat supply extraction flow is adjusted using vapour control valve is entered, this
When, low pressure (LP) cylinder cooling steam system is remained off, and when cooling steam vapour source is intermediate pressure cylinder steam discharge, cooling steam system is
Opening；
Step 2, when unit enters the operation of vapour heat-supplying mode to cut off low pressure (LP) cylinder, is entered using vapour control valve excision low pressure (LP) cylinder is entered
Vapour, opens cooling steam system, takes away low pressure rotor air blast heat, cools down low pressure (LP) cylinder linear leaf.
In the step 2, the evaporation capacity for engine of cooling steam system is adjusted according to the reading on flowmeter.
Compared with prior art, excision low pressure (LP) cylinder enters during the present invention can realize steam turbine operation by control valve group
Automotive row, and turbine low pressure cylinder can be greatly reduced enters steam flow amount, improve the heat supply pump gas ablity and economical operation of unit
Property, steam turbine taking over seamlessly from steam extraction and condensing formula heat-supplying mode to high back pressure heat-supplying mode is realized, unit is had concurrently and draws gas
The characteristics of condensing-type unit operation mode is flexibly and High Back Pressure Steam Turbine Units heat capacity is strong.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Wherein, 1, intermediate pressure cylinder；2nd, low pressure (LP) cylinder；3rd, condenser；4th, control valve group；5th, cooling steam system；6th, flowmeter；7、
Flow control valve group.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1：
The present invention includes intermediate pressure cylinder 1, the connection low pressure (LP) cylinder 2 of intermediate pressure cylinder 1, the connection condenser 3 of low pressure (LP) cylinder 2, intermediate pressure cylinder 1 and low pressure
Be provided with mesolow communicating pipe between cylinder 2 into vapour control valve 4, cooling steam system 5 from enter vapour control valve 4 and low pressure (LP) cylinder 2 it
Between steam inlet pipe road access low pressure (LP) cylinder 2 flow passage component.
The method of work of the present invention comprises the following steps：
Step one, when unit is run with steam extraction and condensing heat-supplying mode, heat supply extraction flow is adjusted using vapour control valve 4 is entered,
Now, low pressure (LP) cylinder cooling steam system 5 is remained off, when cooling steam vapour source is intermediate pressure cylinder steam discharge, cooling steam system
System 5 is opening；
Step 2, when unit enters the operation of vapour heat-supplying mode to cut off low pressure (LP) cylinder, low pressure (LP) cylinder 2 is cut off using vapour control valve 4 is entered
Enter vapour, open cooling steam system 5, take away low pressure rotor air blast heat, cool down low pressure (LP) cylinder linear leaf.
Embodiment 2：
The present invention includes intermediate pressure cylinder 1, the connection low pressure (LP) cylinder 2 of intermediate pressure cylinder 1, the connection condenser 3 of low pressure (LP) cylinder 2, intermediate pressure cylinder 1 and low pressure
Be provided with mesolow communicating pipe between cylinder 2 into vapour control valve 4, cooling steam system 5 from enter vapour control valve 4 and low pressure (LP) cylinder 2 it
Between steam inlet pipe road access the flow passage component of low pressure (LP) cylinder 2, be provided with flow control valve group 7 and flowmeter in cooling steam system 5
6。
The method of work of the present invention comprises the following steps：
Step one, when unit is run with steam extraction and condensing heat-supplying mode, heat supply extraction flow is adjusted using vapour control valve 4 is entered,
Now, low pressure (LP) cylinder cooling steam system 5 is remained off, when cooling steam vapour source is intermediate pressure cylinder steam discharge, cooling steam system
System 5 is opening；
Step 2, when unit enters the operation of vapour heat-supplying mode to cut off low pressure (LP) cylinder, low pressure (LP) cylinder 2 is cut off using vapour control valve 4 is entered
Enter vapour, open cooling steam system 5, take away low pressure rotor air blast heat, low pressure (LP) cylinder linear leaf is cooled down, according on flowmeter 6
The evaporation capacity for engine of reading adjustment cooling steam system 5.
The technology is during steam turbine operation, using being arranged on low pressure (LP) cylinder steam inlet pipe road (such as mesolow communicating pipe)
Control valve group (valve version includes but is not limited to butterfly valve, stop valve, gate valve etc.) excision low pressure (LP) cylinder enters vapour, and cold using what is increased newly
But cooling steam is introduced low pressure (LP) cylinder flow passage component and cools down low pressure (LP) cylinder linear leaf by vapour system, realizes steam turbine excision low pressure (LP) cylinder fortune
OK.In the process of running, steam turbine can realize smoothly cutting from steam extraction and condensing heat supply running mode to the high back pressure method of operation
Change.The technology is to fully enter low pressure (LP) cylinder by the excision of low pressure (LP) cylinder admission valve with traditional steam turbine heat supply process maximum difference
Steam, be only passed through cooling steam to low pressure (LP) cylinder, realize steam turbine excision low pressure (LP) cylinder operation.
Claims (6)
1. a kind of cut off the heating system that low pressure (LP) cylinder enters vapour, it is characterised in that including intermediate pressure cylinder (1), intermediate pressure cylinder (1) connection low pressure
Cylinder (2), low pressure (LP) cylinder (2) connection condenser (3), is provided with into vapour on the mesolow communicating pipe between intermediate pressure cylinder (1) and low pressure (LP) cylinder (2)
Control valve (4), cooling steam system (5) is introduced to low pressure (LP) cylinder (2) from the position entered between vapour control valve (4) and low pressure (LP) cylinder (2).
2. the system that a kind of excision low pressure (LP) cylinder according to claim 1 enters vapour heat supply, it is characterised in that the cooling steam
Flow passage component of the system (5) from the steam inlet pipe road access low pressure (LP) cylinder (2) entered between vapour control valve (4) and low pressure (LP) cylinder (2).
3. a kind of excision low pressure (LP) cylinder according to claim 1 enters the heating system of vapour, it is characterised in that the cooling steam
Flow control valve group (7) is provided with system (5).
4. a kind of excision low pressure (LP) cylinder according to claim 1 enters the heating system of vapour, it is characterised in that the cooling steam
Flowmeter (6) is provided with system (5).
5. a kind of excision low pressure (LP) cylinder described in claim 1 enters the method for work of the system of vapour heat supply, it is characterised in that including with
Lower step：
Step one, when unit is run with steam extraction and condensing heat-supplying mode, heat supply extraction flow is adjusted using vapour control valve (4) is entered, this
When, low pressure (LP) cylinder cooling steam system (5) is remained off, when cooling steam vapour source is intermediate pressure cylinder steam discharge, cooling steam system
(5) are united for opening；
Step 2, when unit enters the operation of vapour heat-supplying mode to cut off low pressure (LP) cylinder, low pressure (LP) cylinder is cut off using vapour control valve (4) is entered
(2) enter vapour, open cooling steam system (5), take away low pressure rotor air blast heat, cool down low pressure (LP) cylinder linear leaf.
6. a kind of excision low pressure (LP) cylinder according to claim 5 enters the method for work of the system of vapour heat supply, it is characterised in that institute
State in step 2, the evaporation capacity for engine of cooling steam system (5) is adjusted according to the reading on flowmeter (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710386956.3A CN107013262B (en) | 2017-05-26 | 2017-05-26 | Heating system and method for cutting off steam inlet of low-pressure cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710386956.3A CN107013262B (en) | 2017-05-26 | 2017-05-26 | Heating system and method for cutting off steam inlet of low-pressure cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107013262A true CN107013262A (en) | 2017-08-04 |
| CN107013262B CN107013262B (en) | 2023-08-22 |
Family
ID=59451527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710386956.3A Active CN107013262B (en) | 2017-05-26 | 2017-05-26 | Heating system and method for cutting off steam inlet of low-pressure cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107013262B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590783A (en) * | 2018-03-01 | 2018-09-28 | 华电电力科学研究院有限公司 | A kind of control method for the swollen difference of turbine low pressure cylinder |
| CN109736908A (en) * | 2019-01-31 | 2019-05-10 | 西安西热节能技术有限公司 | A kind of internal bypass turbine generator system and method applied to cogeneration units |
| CN110985145A (en) * | 2019-11-25 | 2020-04-10 | 东方电气集团东方汽轮机有限公司 | Method for improving heat supply capacity and flexibility of asymmetric double-split flow intermediate pressure cylinder four-steam-exhaust steam turbine unit |
| CN113586176A (en) * | 2021-08-27 | 2021-11-02 | 西安热工研究院有限公司 | System for switching cylinders of intermediate pressure cylinder of steam turbine of thermal power plant and operation method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016083A (en) * | 2012-12-26 | 2013-04-03 | 北京国电蓝天节能科技开发有限公司 | Back pressure and straight condensing switching heat supply system |
| CN103790642A (en) * | 2013-08-08 | 2014-05-14 | 华能国际电力股份有限公司 | Gas-steam combined cycle cogeneration turbine and combined cycle unit |
| RU2013133546A (en) * | 2013-07-18 | 2015-01-27 | Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") | PART OF LOW PRESSURE OF STEAM TURBINE |
| CN105840244A (en) * | 2016-04-21 | 2016-08-10 | 哈尔滨汽轮机厂有限责任公司 | Plain shaft high-back-pressure heat supply steam turbine |
| CN105888748A (en) * | 2016-04-19 | 2016-08-24 | 刘子旺 | Comprehensive energy efficiency system for heating low-pressure cylinder polished shaft cooling and small turbine steam exhaust waste heat recovery |
| CN106224034A (en) * | 2016-08-19 | 2016-12-14 | 华北电力科学研究院有限责任公司 | Extracted steam from turbine heat supply and back pressure are for hot change-over method |
| CN206830242U (en) * | 2017-05-26 | 2018-01-02 | 中国华能集团公司 | A kind of heating system for cutting off low pressure (LP) cylinder and entering vapour |
| CN108035777A (en) * | 2018-01-08 | 2018-05-15 | 西安西热节能技术有限公司 | A kind of fired power generating unit mesolow cylinder combines zero output heating system and method |
-
2017
- 2017-05-26 CN CN201710386956.3A patent/CN107013262B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016083A (en) * | 2012-12-26 | 2013-04-03 | 北京国电蓝天节能科技开发有限公司 | Back pressure and straight condensing switching heat supply system |
| RU2013133546A (en) * | 2013-07-18 | 2015-01-27 | Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") | PART OF LOW PRESSURE OF STEAM TURBINE |
| CN103790642A (en) * | 2013-08-08 | 2014-05-14 | 华能国际电力股份有限公司 | Gas-steam combined cycle cogeneration turbine and combined cycle unit |
| CN105888748A (en) * | 2016-04-19 | 2016-08-24 | 刘子旺 | Comprehensive energy efficiency system for heating low-pressure cylinder polished shaft cooling and small turbine steam exhaust waste heat recovery |
| CN105840244A (en) * | 2016-04-21 | 2016-08-10 | 哈尔滨汽轮机厂有限责任公司 | Plain shaft high-back-pressure heat supply steam turbine |
| CN106224034A (en) * | 2016-08-19 | 2016-12-14 | 华北电力科学研究院有限责任公司 | Extracted steam from turbine heat supply and back pressure are for hot change-over method |
| CN206830242U (en) * | 2017-05-26 | 2018-01-02 | 中国华能集团公司 | A kind of heating system for cutting off low pressure (LP) cylinder and entering vapour |
| CN108035777A (en) * | 2018-01-08 | 2018-05-15 | 西安西热节能技术有限公司 | A kind of fired power generating unit mesolow cylinder combines zero output heating system and method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590783A (en) * | 2018-03-01 | 2018-09-28 | 华电电力科学研究院有限公司 | A kind of control method for the swollen difference of turbine low pressure cylinder |
| CN108590783B (en) * | 2018-03-01 | 2019-11-05 | 华电电力科学研究院有限公司 | A kind of control method for the swollen difference of turbine low pressure cylinder |
| CN109736908A (en) * | 2019-01-31 | 2019-05-10 | 西安西热节能技术有限公司 | A kind of internal bypass turbine generator system and method applied to cogeneration units |
| CN110985145A (en) * | 2019-11-25 | 2020-04-10 | 东方电气集团东方汽轮机有限公司 | Method for improving heat supply capacity and flexibility of asymmetric double-split flow intermediate pressure cylinder four-steam-exhaust steam turbine unit |
| CN113586176A (en) * | 2021-08-27 | 2021-11-02 | 西安热工研究院有限公司 | System for switching cylinders of intermediate pressure cylinder of steam turbine of thermal power plant and operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107013262B (en) | 2023-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107013262A (en) | It is a kind of to cut off heating system and method that low pressure (LP) cylinder enters vapour | |
| JP5551508B2 (en) | Control device for working fluid circulating in closed circuit operating according to Rankine cycle and method of using the same | |
| CN108343479B (en) | Two-unit-based back condensation and extraction heat supply system and adjusting method | |
| US20100192569A1 (en) | Exhaust gas system and method for recovering energy | |
| JP6549034B2 (en) | Gas turbine control system and method | |
| JPWO2014207831A1 (en) | Exhaust gas recirculation device for internal combustion engine | |
| CN109469522A (en) | A kind of steam exhaust cooling system and steam exhaust cooling means | |
| CN104454657A (en) | Turbo-compressor and refrigeration cycle apparatus | |
| KR20130122946A (en) | Exhaust turbocharger of an internal combustion engine | |
| CN106988803B (en) | A kind of low pressure (LP) cylinder linear leaf cooling system and method based on extraction opening | |
| CN206830242U (en) | A kind of heating system for cutting off low pressure (LP) cylinder and entering vapour | |
| CN104895790B (en) | A kind of double-screw compressor and multi-temperature zone heat pump with middle air extracting function | |
| CN105156161A (en) | Main reheat steam and main reheat steam bypass system | |
| CN209244620U (en) | A kind of steam exhaust cooling system | |
| CN210178427U (en) | Long blade cooling system under cylinder cutting operation of steam turbine | |
| CN207245769U (en) | A kind of low pressure (LP) cylinder linear leaf cooling system based on feed pump turbine steam discharge | |
| CN206801621U (en) | A kind of low pressure (LP) cylinder linear leaf cooling system based on extraction opening | |
| CN107227981B (en) | System and method for cooperatively controlling exhaust back pressure of steam turbine by utilizing LNG cold energy | |
| CN207064021U (en) | Steam turbine gland system | |
| CN2600590Y (en) | Closed tube with bypass small butterfly valve device | |
| CN205172659U (en) | Synthesize refrigerated double reheat unit thermodynamic system | |
| CN108954909A (en) | A kind of heat pump system and its oily cooling cycle control method | |
| CN107965753A (en) | One kind utilizes low-temperature industrial hot water production vapor device | |
| EP3066313A1 (en) | Method for operating an internal combustion engine | |
| CN208184797U (en) | A kind of solidifying pumping back heating system based on two unit black soy sauce vapour |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |