CN104566331B - A kind of cogeneration of heat and power back pressure type heat regenerative system - Google Patents
A kind of cogeneration of heat and power back pressure type heat regenerative system Download PDFInfo
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- CN104566331B CN104566331B CN201410812850.1A CN201410812850A CN104566331B CN 104566331 B CN104566331 B CN 104566331B CN 201410812850 A CN201410812850 A CN 201410812850A CN 104566331 B CN104566331 B CN 104566331B
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- Y—GENERAL 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
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- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
A kind of cogeneration of heat and power back pressure type heat regenerative system, it mainly includes：Back pressure type generating set, number high-pressure heater, No. two high-pressure heaters, higher-pressure deaerator, steam feed pump, feed pump turbine, a surface-type moisturizing heaters, described back pressure steam turbine discharge pass through the external heat supply of main blow-off line mostly as low pressure heating steam；A part of deoxygenation steam as higher-pressure deaerator；Some draw pipeline all the way on main blow-off line and be connected by the 4th valve with feed pump turbine as the driving steam of feed pump turbine；Described feed pump turbine steam discharge enters surface-type moisturizing heater, goes to heat the chemical feed water that gland heater comes out；After the connection deoxygenation of higher-pressure deaerator 8 of surface-type moisturizing heater, the feed pump driven by carrying on the back formula steam wheel press steam discharge connects No. two high-pressure heaters and further heats feedwater, then enters boiler by a number high-pressure heater of connection.
Description
Technical field
The invention belongs to energy field, more particularly to a kind of back pressure type heat regenerative system for new and effective cogeneration of heat and power.
Background technology
In response to the call of national energy-saving emission reduction, most area all takes concentration to industrial park inside and outside the province at present
Heat-supplying mode.Back pressure unit is due to the features such as its thermal efficiency is high, heating load is big, the first choice as thermic load Nesting Zone.
General to use two-stage deoxygenation for small-sized back pressure unit, its deaerating effect is relatively good, is utilized in steam energy level gradient
It is upper relatively reasonable, but in variable load operation, atmospheric type deaerator with feed pump turbine steam discharge is more difficult matches, two-stage deoxygenation pair
The adaptability of operating mode is relatively poor, and compared with single-stage deoxygenation, main building and body equipment investment increase.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, and to provide a kind of rational in infrastructure, easy to use and reliable, is exchanged work
Condition good operation stability, reduces investment outlay, and reduces operating cost, saves the back pressure type heat regenerative system of the cogeneration of heat and power of the energy.
The purpose of the present invention is achieved through the following technical solutions：A kind of cogeneration of heat and power back pressure type heat regenerative system, it
Mainly include：Back pressure steam turbine, high-pressure heater, No. two high-pressure heaters, higher-pressure deaerator, steam feed pump,
Feed pump turbine, surface-type moisturizing heater, described back pressure steam turbine discharge is mostly as low pressure heating steam
Pass through the external heat supply of main blow-off line；A part draws one as the deoxygenation steam of higher-pressure deaerator on main blow-off line
Road pipeline is connected by the 3rd valve with higher-pressure deaerator；Some exist as the driving steam of feed pump turbine
Pipeline all the way is drawn on main blow-off line to be connected with feed pump turbine by the 4th valve；
Described feed pump turbine steam discharge enters surface-type moisturizing heater, goes to heat the chemistry that gland heater comes out
Make-up water；After the connection deoxygenation of higher-pressure deaerator 8 of surface-type moisturizing heater, the feedwater driven by back pressure steam turbine discharge
Pump connects No. two high-pressure heaters and further heats feedwater, then enters boiler by a number high-pressure heater of connection.
The chemical feed water first passes around gland heater heating；The surface-type moisturizing heater condensate passes through hydrophobic
Pump is returned on the chemical feed water main pipeline between surface-type moisturizing heater and higher-pressure deaerator；Number high-pressure heater
It is hydrophobic to flow automatically to No. two high-pressure heaters, with No. two high-pressure heaters it is hydrophobic mix after enter higher-pressure deaerator；Axle envelope adds
The hydrophobic of hot device is returned on the chemical feed water main pipeline before gland heater by drainage pump.
Described back pressure steam turbine mainly has three tunnels to draw gas：The first via passes through the first valve and a high-pressure heater
It is connected, the second tunnel is connected by the second valve with No. two high-pressure heaters, the 3rd tunnel is externally supplied as middle pressure heating steam
Heat.
The present invention is driven by using two-stage high-pressure heater and single-stage high voltage oxygen-eliminating device using back pressure machine part steam discharge
Steam feed pump, feed pump turbine steam discharge enters surface-type moisturizing heater heatingization moisturizing, so as to constitute the new and effective back of the body
Press heat regenerative system.
The beneficial effects of the invention are as follows compared with steam feed pump system is matched somebody with somebody in two-stage deoxygenation, the system variable parameter operation is steady
Qualitative good, main building and body equipment investment are more saved.Compared with electronic feed-water pump is matched somebody with somebody in single-stage deoxygenation, the system steam
It is more reasonable that energy level gradient is utilized, and by taking 50MW back pressure unit as an example, the system supplying power for outside amount at least increases 3000kw, by every
The gross earnings of 0.32 yuan of degree electricity, annual about 5,280,000 yuan of gross earnings of increase（Hours of operation is counted for 5500 hours per year）.
The present invention have it is rational in infrastructure, easy to use and reliable, variable parameter operation stability is good, reduces investment outlay, reduction operation
Cost, the features such as saving the energy.
Brief description of the drawings
Fig. 1 is the operation logic schematic diagram of cogeneration of heat and power back pressure type heat regenerative system of the present invention.
Label in figure is：Back pressure steam turbine 1, generator 2, boiler 3, feed pump turbine 4, steam feed pump 5,
Number high-pressure heater 6, No. two high-pressure heaters 7, higher-pressure deaerator 8, surface-type moisturizing heater 9, gland heater 10, dredge
Water pump 11, the valve 104 of 12 and first valve of axle pressure heater and drainage pump 101 to the 4th.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.Shown in Fig. 1, a kind of cogeneration of heat and power back of the body of the present invention
Pressure type heat regenerative system, it mainly includes：Back pressure steam turbine 1, high-pressure heater 6, No. two high-pressure heaters 7, a high pressures
Oxygen-eliminating device 8, steam feed pump 5, feed pump turbine 4, surface-type moisturizing heater 9.The described steam discharge of back pressure steam turbine 1
Pass through the external heat supply of main blow-off line mostly as low pressure heating steam；A part of deoxygenation steam as higher-pressure deaerator,
Pipeline all the way is drawn on main blow-off line to be connected with higher-pressure deaerator 8 by the 3rd valve 103；Some as to
The driving steam of water pump steam turbine, i.e., draw pipeline all the way on main blow-off line and pass through the 4th valve 104 and feed pump steamer
Machine 4 is connected；
The described steam discharge of feed pump turbine 4 enters surface-type moisturizing heater 9, goes to heat what gland heater 10 came out
Chemical feed water；After the connection deoxygenation of higher-pressure deaerator 8 of surface-type moisturizing heater 9, driven by the steam discharge of back pressure steam turbine 1
Feed pump 5 connect the further heating feedwater of No. two high-pressure heaters 7, then enter boiler by a number high-pressure heater 6 of connection.
Shown in figure, the chemical feed water first passes around gland heater 10 and heated；The surface-type moisturizing heater 9
On the hydrophobic chemical feed water main pipeline returned by drainage pump 11 between surface-type moisturizing heater 9 and higher-pressure deaerator 8；
Number the hydrophobic of high-pressure heater 6 flows automatically to No. two high-pressure heaters 7, with No. two high-pressure heaters 7 it is hydrophobic mix after enter
To higher-pressure deaerator 8；The hydrophobic of gland heater 10 returns the chemical feed water before gland heater 10 by drainage pump 12
On main pipeline.
Back pressure steam turbine 1 of the present invention mainly has three tunnels to draw gas：The first via passes through the first valve 101 and No. one
High-pressure heater 6 is connected, and the second tunnel is connected by the second valve 102 with No. two high-pressure heaters 7, and the 3rd tunnel is used as middle pressure
The external heat supply of heating steam.
Embodiment：Shown in Fig. 1, add the invention mainly comprises boiler 3, back pressure steam turbine 1, generator 2, a high pressure
Hot device 6, No. two high-pressure heaters 7, higher-pressure deaerator 8, steam feed pump 5, feed pump turbine 4, surface-type moisturizing heaters
9th, the equipment such as gland heater 10, drainage pump 11, axle pressure heater and drainage pump 12 and related valve 101 ~ 104.
The system water supplement is by chemical feed water is Lai moisturizing is first passed around after the heating of gland heater 10, into feedwater mercury vapour
The steam discharge of turbine 4 is come the surface-type moisturizing heater 9 that heats, after the deoxygenation of higher-pressure deaerator 8, by the row of back pressure steam turbine 1
The feed pump 5 of vapour driving gets to the further heating feedwater of No. two high-pressure heaters 7, enters boiler by a high-pressure heater 6.
Number the hydrophobic of high-pressure heater 6 flows automatically to No. two high-pressure heaters 7, is mixed with No. two the hydrophobic of high-pressure heater 7
Higher-pressure deaerator 8 is entered after conjunction.Surface-type moisturizing heater 8 is hydrophobic to return surface-type moisturizing heater by drainage pump 11
On chemical feed water main pipeline between 9 and higher-pressure deaerator 8.The hydrophobic of gland heater 10 returns axle by drainage pump 12
Seal on the chemical feed water main pipeline before heater 10.
The main steam produced from boiler enters the acting of back pressure turbine generating set and generated electricity, described back pressure steam wheel
Machine 1 mainly has three tunnels to draw gas：The first via is connected by the first valve 101 with a high-pressure heater 6, and the second tunnel passes through second
Valve 102 is connected with No. two high-pressure heaters 7, and the 3rd tunnel is used as the middle pressure external heat supply of heating steam.
Back pressure steam turbine discharge major part steam discharge passes through the external heat supply of main blow-off line as low pressure heating steam；One
Pipeline all the way is drawn on main blow-off line and passes through the 3rd valve 103 and height as the deoxygenation steam of higher-pressure deaerator 8 in part
Press oxygen-eliminating device connection；Some draw on main blow-off line and manage all the way as the driving steam of feed pump turbine 4
Road is connected by valve with feed pump turbine.Feed pump turbine steam discharge enters surface-type moisturizing heater 9, goes to heat axle envelope
The chemical feed water that heater 10 comes out.
The course of work of the present invention is as follows：
It is broadly divided into three parts.Part I, the heating of feedwater.The moisturizing of the system is by chemical feed water is Lai moisturizing
First pass around after gland heater heating, the surface-type moisturizing heater heated into feed pump turbine steam discharge passes through height
Press after oxygen-eliminating device deoxygenation, the feed pump driven by back pressure machine steam discharge gets to No. two high-pressure heaters and further heats feedwater, pass through
A number high-pressure heater enters boiler.
Part II, back pressure turbine draws gas.From back pressure steam turbine cylinder body extract out three road steam, wherein one take out and
Two steam taken out heat one-level high-pressure heater and two grades of high-pressure heaters respectively, also have pressure heating steam in being used as all the way external
Heat supply.
Part III, back pressure steam turbine discharge.It mainly has three kinds of purposes：Most of steam discharge steams as low pressure heat supply
Vapour passes through the external heat supply of main blow-off line；A part of deoxygenation steam as higher-pressure deaerator；Some is used as feed pump
The driving steam of steam turbine.Feed pump turbine steam discharge enters surface-type moisturizing heater, goes to heat what gland heater came out
Chemical feed water.
Claims (3)
1. a kind of cogeneration of heat and power back pressure type heat regenerative system, it mainly includes：Back pressure steam turbine, high-pressure heater, two
Number high-pressure heater, higher-pressure deaerator, steam feed pump, feed pump turbine, surface-type moisturizing heater, it is characterised in that institute
The back pressure steam turbine stated（1）Steam discharge passes through the external heat supply of main blow-off line mostly as low pressure heating steam；A part
As the deoxygenation steam of higher-pressure deaerator, i.e., pipeline all the way is drawn on main blow-off line and passes through the 3rd valve（103）With high pressure
Oxygen-eliminating device（8）Connection；Some draw on main blow-off line and manage all the way as the driving steam of feed pump turbine
Road passes through the 4th valve（104）With feed pump turbine（4）Connection；
Described feed pump turbine（4）Steam discharge enters surface-type moisturizing heater（9）, go to heat gland heater（10）Out
Chemical feed water；Surface-type moisturizing heater（9）Connect higher-pressure deaerator（8）After deoxygenation, pass through back pressure steam turbine（1）
The feed pump of steam discharge driving（5）Connect No. two high-pressure heaters（7）Further heating feedwater, then by a number hyperbaric heating of connection
Device（6）Into boiler.
2. cogeneration of heat and power back pressure type heat regenerative system according to claim 1, it is characterised in that the chemical feed water is first
Heated by gland heater 10；The surface-type moisturizing heater（9）It is hydrophobic to pass through drainage pump（11）Return surface-type benefit
Water heater（9）With higher-pressure deaerator（8）Between chemical feed water main pipeline on；A number high-pressure heater（6）It is hydrophobic from
Flow to No. two high-pressure heaters（7）, with No. two high-pressure heaters（7）Hydrophobic mixing after enter higher-pressure deaerator（8）；Axle envelope
Heater（10）Hydrophobic pass through drainage pump（12）Return gland heater（10）On preceding chemical feed water main pipeline.
3. cogeneration of heat and power back pressure type heat regenerative system according to claim 1, it is characterised in that described back pressure steam wheel
Machine（1）Mainly there are three tunnels to draw gas：The first via passes through the first valve（101）With a high-pressure heater（6）It is connected, the second tunnel leads to
Cross the second valve（102）With No. two high-pressure heaters（7）It is connected, the 3rd tunnel is used as the middle pressure external heat supply of heating steam.
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| CN201410812850.1A CN104566331B (en) | 2014-12-24 | 2014-12-24 | A kind of cogeneration of heat and power back pressure type heat regenerative system |
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| CN201410812850.1A CN104566331B (en) | 2014-12-24 | 2014-12-24 | A kind of cogeneration of heat and power back pressure type heat regenerative system |
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| CN104566331A CN104566331A (en) | 2015-04-29 |
| CN104566331B true CN104566331B (en) | 2017-07-21 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105910092B (en) * | 2015-11-26 | 2018-06-12 | 中国能源建设集团浙江省电力设计院有限公司 | Vacuum deaerator system of backpressure unit and condensed water circulation method |
| CN106195995A (en) * | 2016-08-04 | 2016-12-07 | 联合瑞升（北京）科技有限公司 | A kind of heating power jet pump height adds steam-supplying system |
| CN106402840B (en) * | 2016-09-14 | 2019-04-26 | 上海明华电力技术工程有限公司 | Cut off the method that high-pressure heater vapour side valve door participates in unit primary frequency modulation application of load |
| CN107060919B (en) * | 2017-05-31 | 2019-05-03 | 邯钢集团邯宝钢铁有限公司 | A kind of gas fired-boiler steam turbine power generation Quick starting energy-saving device and method |
| CN108613237A (en) * | 2018-04-28 | 2018-10-02 | 东南大学 | A kind of thermal power cogeneration central heating system based on temperature counterpart cascade utilization |
| CN110566298B (en) * | 2019-09-30 | 2022-06-17 | 大唐郓城发电有限公司 | Method for optimizing regenerative cycle efficiency |
| CN110905613A (en) * | 2019-12-09 | 2020-03-24 | 国电龙源电力技术工程有限责任公司 | Coal-fired steam back pressure machine distributed energy supply simplified heat regeneration system and method |
| CN111120013A (en) * | 2019-12-13 | 2020-05-08 | 山东中实易通集团有限公司 | Reliable steam supply system under unavailable working condition of steam turbine generator unit |
| WO2023225842A1 (en) * | 2022-05-24 | 2023-11-30 | 暨南大学 | External combined pressure-stage steam turbine set and operating method therefor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1445429A1 (en) * | 2003-02-07 | 2004-08-11 | Elsam Engineering A/S | A steam turbine system |
| CN201715492U (en) * | 2010-05-28 | 2011-01-19 | 济南市琦泉热电有限责任公司 | Set back-heating system adopting different pressure ratings of steam |
| CN102392700A (en) * | 2011-08-23 | 2012-03-28 | 福建省石狮热电有限责任公司 | Novel backpressure turbine with low vacuum regenerative heat |
| CN102720550B (en) * | 2012-07-02 | 2014-10-08 | 上海汽轮机厂有限公司 | Dual-machine regenerative steam extraction steam thermodynamic system |
| CN102828791B (en) * | 2012-09-06 | 2015-07-01 | 中国电力工程顾问集团华东电力设计院 | Thermal power plant and united thermodynamic system for thermal power plant |
| CN103498708B (en) * | 2013-10-10 | 2016-01-13 | 中国电力工程顾问集团华东电力设计院有限公司 | The air cooling reheating embrittlement system of back pressure type small turbine drive feed water pump |
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Address after: No. 68 GUCUI Road, Hangzhou, Zhejiang Province Patentee after: Energy source in China construction group Zhejiang Province Power Design Institute Co., Ltd Address before: No. 68 GUCUI Road, Hangzhou, Zhejiang Province Patentee before: Zhejiang Electric Power Design Institute |