CN101963075A - Method for changing pure condensation into back pressure heat supply - Google Patents
Method for changing pure condensation into back pressure heat supply Download PDFInfo
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- CN101963075A CN101963075A CN2010102787935A CN201010278793A CN101963075A CN 101963075 A CN101963075 A CN 101963075A CN 2010102787935 A CN2010102787935 A CN 2010102787935A CN 201010278793 A CN201010278793 A CN 201010278793A CN 101963075 A CN101963075 A CN 101963075A
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Abstract
The invention discloses a method for changing the heat supply of a large and medium steam turbine, in particular a method for changing pure condensation into back pressure heat supply. In the method for changing the pure condensation into the back pressure heat supply, a high and medium pressure rotor in the steam turbine is connected with one end of a low pressure rotor through a coupler B; the other end of the low pressure rotor is connected with a generator through a coupler A for power generation and heat supply. The method is characterized in that: the low pressure rotor is a pure condensation rotor in non-heating season and the pure condensation rotor is changed into a back pressure heat supply rotor in the heating season. The method for changing the pure condensation into the back pressure heat supply is suitable for transforming an extraction condensing high and low pressure cylinder steam turbine generator unit which has been put into operation; and the back pressure heat supply rotor is used in the heating season and the pure condensation rotor is used in non-heating season, so heat supply efficiency is greatly improved.
Description
(1) technical field
The present invention relates to a kind of method of big-and-middle-sized steam turbine heat supply conversion, particularly a kind of pure condensate changes the method for back pressure heat supply into.
(2) background technique
At present, the big-and-middle-sized unit of domestic power plant adopts the condensing turbine that draws gas substantially, and externally extraction for heat supply is adopted in heat supply.Configuration is can generate electricity annual each season in order to guarantee like this, it is mutually far short of what is expected that but economic benefit is compared in extraction for heat supply and back pressure heat supply, hindering the back pressure unit is after in a single day unit changes the back pressure heat supply into to big capacity reasons of development, spring and summer can't move autumn, back pressure unit operation The limited time system.The heat supply of back pressure unit is that Economy is best, and energy utilization rate is 100% in theory.And conventional Turbo-generator Set energy utilization rate has only 40-46%.Consider efficiency of boiler, mechanical efficiency and pipeline efficient etc., the energy utilization rate of back pressure unit is also more than 80%.Heating season, net coal consumption rate is taken out the low 170-180 gram of unit net coal consumption rate with fixed attention than routine about 170 gram/kilowatt hours.The reason that why can not promote at present is exactly economical can not the assurance of non-heating season joint, causes annual economic benefit to glide.Domestic have a lot of relevant academic researches, but all be at new operation unit, is not suitable for the sucking condensing type high low pressure that has put into operation and divides the transformation of cylinder Turbo-generator Set.
(3) summary of the invention
The present invention provides the high pure condensate of a kind of heating efficiency to change the method for back pressure heat supply in order to remedy the defective of prior art.
The present invention is achieved through the following technical solutions:
A kind of pure condensate changes the method for back pressure heat supply into, high pressure rotor by steam turbine connects low pressure rotor one end by coupling B, the low pressure rotor the other end connects generator by coupling A and carries out power generation and heat supply, it is characterized in that: save at non-heating season, low pressure rotor adopts the pure condensate rotor, in heating season, the pure condensate rotor is replaced by back pressure heat supply rotor.
The invention has the beneficial effects as follows: this pure condensate changes the method for back pressure heat supply into, be applicable to that the sucking condensing type high low pressure that has put into operation divides the transformation of cylinder Turbo-generator Set, adopt back pressure heat supply rotor in heating season, adopt the pure condensate rotor at the non-heating season joint, heating efficiency improves greatly.
(4) description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Accompanying drawing 1 is the mounting structure schematic representation of pure condensate rotor of the present invention.
Accompanying drawing 2 is the mounting structure schematic representation of back pressure heat supply rotor of the present invention.
Among the figure, 1 generator, 2 coupling A, 3 pure condensate rotors, 4 coupling B, 5 high pressure rotors, 6 back pressure heat supply rotors.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This pure condensate changes the method for back pressure heat supply into, high pressure rotor 5 by steam turbine connects low pressure rotor one end by coupling B4, the low pressure rotor the other end connects generator 1 by coupling A2 and carries out power generation and heat supply, it is characterized in that: save at non-heating season, low pressure rotor adopts pure condensate rotor 3, in heating season, pure condensate rotor 3 is replaced by back pressure heat supply rotor 6.
This pure condensate changes the method for back pressure heat supply into, and at non-heating season, the high pressure rotor 5 of steam turbine connects steam turbine pure condensate rotor 3 by coupling B4, connects generator 1 by coupling A2, is used for the unit generation of non-heating season; In heating season, untie coupling A2 and coupling B4, pure condensate rotor 3 is replaced by back pressure heat supply rotor 6, connect coupling A2 and coupling B4, be used for the generating electricity in winter heat supply.Finish in heating season, back pressure heat supply rotor 6 is more gained pure condensate rotor 3, be used for generating.Be specially adapted to go into operation the transformation of big-and-middle-sized unit of this steam turbine.Through the unit of transforming, adopting back pressure heat supply rotor 6 heating season, steam turbine moves in the back pressure mode, can obtain good economic benefit, with the 300MW unit is example: unit directly changes the back pressure unit into from the pure condensate unit, the net coal consumption rate of heating season unit is from 335 gram/kilowatt hours, drop to 148.1 gram/kilowatt hours, if the heating user is enough big, unit can generate electricity at full capacity (by completely sending out 23.5 ten thousand calculating), heating season coal consumption decline 335-148.1=186.9 gram/kilowatt hour, if the heat supply phase is calculating in 100 days, save coal-fired=(100*24*235000*186.9)=105411.6 ton, by 800 yuan of/ton calculating of mark coal, heating season is saved ten thousand yuan of coal-fired expense 800*105411.6=8432.9.Equally, this equipment has also overcome the shortcoming that large-scale back pressure unit can not move at non-heating season.Adopt pure condensate rotor 3 at non-heating season, steam turbine will move in the pure condensate mode, guarantee power benefit.
Claims (1)
1. a pure condensate changes the method for back pressure heat supply into, high pressure rotor (5) by steam turbine connects low pressure rotor one end by coupling B (4), the low pressure rotor the other end connects generator (1) by coupling A (2) and carries out power generation and heat supply, it is characterized in that: save at non-heating season, low pressure rotor adopts pure condensate rotor (3), in heating season, pure condensate rotor (3) is replaced by back pressure heat supply rotor (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102787935A CN101963075A (en) | 2010-09-10 | 2010-09-10 | Method for changing pure condensation into back pressure heat supply |
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| CN2010102787935A CN101963075A (en) | 2010-09-10 | 2010-09-10 | Method for changing pure condensation into back pressure heat supply |
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| CN101963075A true CN101963075A (en) | 2011-02-02 |
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| CN2010102787935A Pending CN101963075A (en) | 2010-09-10 | 2010-09-10 | Method for changing pure condensation into back pressure heat supply |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777218A (en) * | 2012-07-20 | 2012-11-14 | 山东泓奥电力科技有限公司 | Comprehensive utilization system for residual heat of coaxially post-positioned back pressure machine |
| 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 |
| CN103291391A (en) * | 2013-05-24 | 2013-09-11 | 华电国际电力股份有限公司山东分公司 | Steam turbine generating heating system with double running modes |
| CN103670547A (en) * | 2013-12-11 | 2014-03-26 | 东方电气集团东方汽轮机有限公司 | Method for enhancing heat supply capability of three-steam-exhaust 200MW turboset |
| CN104895629A (en) * | 2015-06-24 | 2015-09-09 | 东方电气集团东方汽轮机有限公司 | Method for transforming condensed steam type turbine generator unit into back pressure type unit |
| CN105298555A (en) * | 2015-11-04 | 2016-02-03 | 山东翰飞电力科技有限公司 | Pure-condensation-high-back-pressure circulating water heat supply dual-mode single-rotor steam turbine and system thereof |
| CN107202355A (en) * | 2017-06-06 | 2017-09-26 | 大唐东北电力试验研究所有限公司 | High back pressure birotor electric heating unit heating system |
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| JPS57124003A (en) * | 1981-01-27 | 1982-08-02 | Toshiba Corp | Geothermal turbine |
| CN2351555Y (en) * | 1998-05-30 | 1999-12-01 | 徐大懋 | High-pressure end driving load, low-pressure end disconncting cogeneration steam turbine |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777218A (en) * | 2012-07-20 | 2012-11-14 | 山东泓奥电力科技有限公司 | Comprehensive utilization system for residual heat of coaxially post-positioned back pressure machine |
| 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 |
| CN103016083B (en) * | 2012-12-26 | 2015-11-18 | 北京国电蓝天节能科技开发有限公司 | Back pressure pure condensate switches heating system |
| CN103291391A (en) * | 2013-05-24 | 2013-09-11 | 华电国际电力股份有限公司山东分公司 | Steam turbine generating heating system with double running modes |
| CN103292383A (en) * | 2013-05-24 | 2013-09-11 | 华电国际电力股份有限公司山东分公司 | Operational control method of circulating water heat supply unit |
| CN103292383B (en) * | 2013-05-24 | 2016-03-23 | 华电国际电力股份有限公司山东分公司 | A kind of operation control operation method of circulating water heating unit |
| CN103291391B (en) * | 2013-05-24 | 2016-08-10 | 华电国际电力股份有限公司山东分公司 | A kind of steam turbine power generation heating system with double-mode |
| CN103670547A (en) * | 2013-12-11 | 2014-03-26 | 东方电气集团东方汽轮机有限公司 | Method for enhancing heat supply capability of three-steam-exhaust 200MW turboset |
| CN104895629A (en) * | 2015-06-24 | 2015-09-09 | 东方电气集团东方汽轮机有限公司 | Method for transforming condensed steam type turbine generator unit into back pressure type unit |
| CN105298555A (en) * | 2015-11-04 | 2016-02-03 | 山东翰飞电力科技有限公司 | Pure-condensation-high-back-pressure circulating water heat supply dual-mode single-rotor steam turbine and system thereof |
| CN107202355A (en) * | 2017-06-06 | 2017-09-26 | 大唐东北电力试验研究所有限公司 | High back pressure birotor electric heating unit heating system |
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Application publication date: 20110202 |