CN204880083U - Cogeneration of heat and power backpressure formula heat regenerative system - Google Patents
Cogeneration of heat and power backpressure formula heat regenerative system Download PDFInfo
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- CN204880083U CN204880083U CN201420828690.5U CN201420828690U CN204880083U CN 204880083 U CN204880083 U CN 204880083U CN 201420828690 U CN201420828690 U CN 201420828690U CN 204880083 U CN204880083 U CN 204880083U
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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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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
Cogeneration of heat and power backpressure formula heat regenerative system, it mainly includes: backpressure formula generating set, water heater, its characterized in that are mended to a high pressure feed water heater, no. Two high pressure feed water heater, high -pressure oxygen -eliminating device, steam feed pump, water -feeding pump steam turbine, surperficial formulas the main steam extraction pipeline of backpressure formula steam turbine's the external heat supply of low pressure heat supply steam steam drain connection draw pipeline of the same kind on the main steam extraction pipeline and pass through the third valve and be connected with high -pressure oxygen -eliminating device still draw pipeline of the same kind on the main steam extraction pipeline and be connected with the water -feeding pump steam turbine through four valves, the steam drain of water -feeding pump steam turbine is connected in surperficial formula benefit water heater, it has rational in infrastructurely, and convenient to use is reliable, and variable working condition operating stability is good, and saving investment reduces the running cost, characteristics such as energy saving.
Description
Technical field
The utility model belongs to energy field, particularly relates to a kind of back pressure type heat regenerative system for new and effective cogeneration of heat and power.
Background technology
In order to respond the call that national energy-saving reduces discharging, most area all takes central heating mode to industrial park inside and outside the province at present.Back pressure unit, due to features such as its thermal efficiency are high, heating load is large, becomes the first-selection of thermic load Nesting Zone.
For small-sized back pressure unit, the deoxygenation of general employing two-stage, its deaerating effect is relatively good, it is comparatively reasonable on steam energy level gradient utilizes, but when variable load operation, atmospheric type deaerator mates with feed pump turbine steam discharge is more difficult, and two-stage deoxygenation is relatively poor to the adaptability of operating mode, and compared with single-stage deoxygenation, main building and body equipment investment increase.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and provides a kind of rational in infrastructure, easy to use and reliable, and variable parameter operation good stability, reduces investment outlay, and reduces operating cost, the back pressure type heat regenerative system of the cogeneration of heat and power of economize energy.
The purpose of this utility model is achieved through the following technical solutions: cogeneration of heat and power back pressure type heat regenerative system, it mainly comprises: back pressure type generating set, a high-pressure heater, No. two high-pressure heaters, higher-pressure deaerator, steam feed pump, feed pump turbine, surface-type moisturizing heater, it is characterized in that the low pressure heating steam steam drain of described back pressure steam turbine connects the main blow-off line of external heat supply, described main blow-off line is drawn a road pipeline and is connected with higher-pressure deaerator by the 3rd valve, described main blow-off line is also drawn a road pipeline and is connected with feed pump turbine by the 4th valve, the steam drain of described feed pump turbine is connected to surface-type moisturizing heater,
The chemical feed water pipeline picked out from gland heater is connected to described surface-type moisturizing heater, the chemical feed water pipeline picked out from surface-type moisturizing heater connects higher-pressure deaerator again, the chemical feed water pipeline picked out from higher-pressure deaerator by connecting No. two high-pressure heaters after steam feed pump, then is communicated with boiler after connecting a high-pressure heater;
Described back pressure steam turbine is provided with three road bleed steam pipeworks: first via bleed steam pipework is connected with a high-pressure heater by the first valve, second road bleed steam pipework is connected with No. two high-pressure heaters by the second valve, and the 3rd road bleed steam pipework is the middle pressure heating steam pipeline of external heat supply.
The exhaust vent of described surface-type moisturizing heater is communicated on the chemical feed water pipeline between surface-type moisturizing heater and higher-pressure deaerator by drainage pump; The outlet that draws gas of a high-pressure heater in No. two high-pressure heaters, and is communicated with No. two high-pressure heaters, and the outlet of drawing gas of described No. two high-pressure heaters is communicated with higher-pressure deaerator; Described gland heater connecting axle gland leak-off pipeline, and on chemical feed water pipeline before the gland packing leakage outlet gland heater of gland heater.
The utility model is by adopting two-stage high-pressure heater and single-stage high voltage oxygen-eliminating device, utilize back pressure machine part steam discharge to drive steam feed pump, feed pump turbine steam discharge enters surface-type moisturizing heater and adds thermalization moisturizing, thus forms new and effective back pressure machine heat regenerative system.
The beneficial effects of the utility model are, compared with joining steam feed pump system with two-stage deoxygenation, native system variable parameter operation good stability, main building and body equipment investment are saved more.Compared with moving feed-water pump with single-stage deoxygenation distribution, it is more reasonable that native system steam energy level gradient utilizes, for the back pressure unit of 50MW, native system supplying power for outside amount at least increases 3000kw, by the gross earnings often spending electricity 0.32 yuan, annual increase gross earnings about 5,280,000 yuan (per year hours of operation 5500 hours meters).
The utility model has rational in infrastructure, easy to use and reliable, and variable parameter operation good stability, reduces investment outlay, and reduces operating cost, the features such as economize energy.
Accompanying drawing explanation
Fig. 1 is the operation logic schematic diagram of cogeneration of heat and power back pressure type heat regenerative system described in the utility model.
Label in figure is: back pressure steam turbine 1, generator 2, boiler 3, feed pump turbine 4, steam feed pump 5, high-pressure heater 6, No. two high-pressure heaters 7, higher-pressure deaerator 8, surface-type moisturizing heater 9, gland heater 10, drainage pump 11, axle pressure heater and drainage pump 12 and the first valve 101 are to the 4th valve 104.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail.Shown in Fig. 1, a kind of cogeneration of heat and power back pressure type heat regenerative system described in the utility model, it mainly comprises: back pressure type generating set 1, high-pressure heater 6, No. two high-pressure heaters 7, higher-pressure deaerator 8, steam feed pump 5, feed pump turbine 4, surface-type moisturizing heater 9.Described back pressure steam turbine 1 steam discharge major part as low pressure heating steam by the external heat supply of main blow-off line; A part, as the deoxygenation steam of higher-pressure deaerator, is namely drawn a road pipeline and is connected with higher-pressure deaerator 8 by the 3rd valve 103 on main blow-off line; Some is as the driving steam of feed pump turbine, on main blow-off line, namely draws a road pipeline be connected with feed pump turbine 4 by the 4th valve 104;
Described feed pump turbine 4 steam discharge enters surface-type moisturizing heater 9, goes heating gland heater 10 chemical feed water out; After surface-type moisturizing heater 9 connects higher-pressure deaerator 8 deoxygenation, the feed pump 5 driven by back of the body formula vapor wheel press 1 steam discharge connects No. two high-pressure heaters 7 heated feed water further, then enters boiler through connection high-pressure heater 6.
Shown in figure, first described chemical feed water heats through gland heater 10; Described surface-type moisturizing heater 9 is hydrophobic to be returned on the chemical feed water main pipeline between surface-type moisturizing heater 9 and higher-pressure deaerator 8 by drainage pump 11; The hydrophobic of a high-pressure heater 6 flows automatically to No. two high-pressure heaters 7, enters into higher-pressure deaerator 8 after mixing with No. two high-pressure heaters 7 hydrophobic; The hydrophobic of gland heater 10 is returned on the chemical feed water main pipeline before gland heater 10 by drainage pump 12.
Back pressure steam turbine 1 described in the utility model mainly contains three tunnels and draws gas: the first via is connected with a high-pressure heater 6 by the first valve 101, second tunnel is connected with No. two high-pressure heaters 7 by the second valve 102, and the 3rd tunnel is as the external heat supply of middle pressure heating steam.
Embodiment: shown in Fig. 1, the utility model mainly comprises the equipment such as boiler 3, back pressure steam turbine 1, generator 2, high-pressure heater 6, No. two high-pressure heaters 7, higher-pressure deaerator 8, steam feed pump 5, feed pump turbine 4, surface-type moisturizing heater 9, gland heater 10, drainage pump 11, axle pressure heater and drainage pump 12 and related valve 101 ~ 104.
This system water supplement is come by chemical feed water, moisturizing is first after gland heater 10 heats, enter the surface-type moisturizing heater 9 that feed pump turbine 4 steam discharge heats, after higher-pressure deaerator 8 deoxygenation, No. two high-pressure heaters 7 heated feed water further got to by the feed pump 5 driven by back pressure machine 1 steam discharge, enters boiler through a high-pressure heater 6.
The hydrophobic of a high-pressure heater 6 flows automatically to No. two high-pressure heaters 7, enters into higher-pressure deaerator 8 after mixing with No. two high-pressure heaters 7 hydrophobic.Surface-type moisturizing heater 8 is hydrophobic to be returned on the chemical feed water main pipeline between surface-type moisturizing heater 9 and higher-pressure deaerator 8 by drainage pump 11.The hydrophobic of gland heater 10 is returned on the chemical feed water main pipeline before gland heater 10 by drainage pump 12.
The main steam produced from boiler enters back pressure turbine generating set 1 ~ 2 acting generating, described back pressure steam turbine 1 mainly contains three tunnels and draws gas: the first via is connected with a high-pressure heater 6 by the first valve 101, second tunnel is connected with No. two high-pressure heaters 7 by the second valve 102, and the 3rd tunnel is as the external heat supply of middle pressure heating steam.
Back pressure steam turbine steam discharge major part steam discharge as low pressure heating steam by the external heat supply of main blow-off line; A part, as the deoxygenation steam of higher-pressure deaerator 8, is namely drawn a road pipeline and is connected with higher-pressure deaerator by the 3rd valve 103 on main blow-off line; Some is as the driving steam of feed pump turbine 4, on main blow-off line, namely draws a road pipeline be connected with feed pump turbine by valve.Feed pump turbine steam discharge enters surface-type moisturizing heater 9, goes heating gland heater 10 chemical feed water out.
The course of work of the present utility model is as follows:
Mainly be divided into three parts.Part I, the heating of feedwater.The moisturizing of this system is come by chemical feed water, moisturizing is first after gland heater heating, the surface-type moisturizing heater entering feed pump turbine steam discharge to heat, after higher-pressure deaerator deoxygenation, No. two further heated feed waters of high-pressure heater got to by the feed pump driven by back pressure machine steam discharge, enter boiler through a high-pressure heater.
Part II, back pressure turbine draws gas.Extract three road steam out from back pressure steam turbine cylinder body, wherein one take out the steam taken out with two and heat one-level high-pressure heater and secondary high-pressure heater respectively, also have a road as the external heat supply of middle pressure heating steam.
Part III, back pressure steam turbine steam discharge.It mainly contains three kinds of purposes: most of steam discharge as low pressure heating steam by the external heat supply of main blow-off line; A part is as the deoxygenation steam of higher-pressure deaerator; Some is as the driving steam of feed pump turbine.Feed pump turbine steam discharge enters surface-type moisturizing heater, goes heating gland heater chemical feed water out.
Claims (2)
1. cogeneration of heat and power back pressure type heat regenerative system, it mainly comprises: back pressure type generating set, a high-pressure heater, No. two high-pressure heaters, higher-pressure deaerator, steam feed pump, feed pump turbine, surface-type moisturizing heater, it is characterized in that the low pressure heating steam steam drain of described back pressure steam turbine (1) connects the main blow-off line of external heat supply, described main blow-off line is drawn a road pipeline and is connected with higher-pressure deaerator (8) by the 3rd valve (103), described main blow-off line is also drawn a road pipeline and is connected with feed pump turbine (4) by the 4th valve (104), the steam drain of described feed pump turbine (4) is connected to surface-type moisturizing heater (9),
The chemical feed water pipeline picked out from gland heater (10) is connected to described surface-type moisturizing heater (9), the chemical feed water pipeline picked out from surface-type moisturizing heater (9) connects higher-pressure deaerator (8) again, the chemical feed water pipeline picked out from higher-pressure deaerator (8) connects No. two high-pressure heaters (7) afterwards by steam feed pump (5), then is communicated with boiler after connection high-pressure heater (6);
Described back pressure steam turbine (1) is provided with three road bleed steam pipeworks: first via bleed steam pipework is connected with a high-pressure heater (6) by the first valve (101), second road bleed steam pipework is connected with No. two high-pressure heaters (7) by the second valve (102), and the 3rd road bleed steam pipework is the middle pressure heating steam pipeline of external heat supply.
2. cogeneration of heat and power back pressure type heat regenerative system according to claim 1, is characterized in that the exhaust vent of described surface-type moisturizing heater (9) is communicated on the chemical feed water pipeline between surface-type moisturizing heater (9) and higher-pressure deaerator (8) by drainage pump (11); The outlet that draws gas of a high-pressure heater (6) in No. two high-pressure heaters (7), and is communicated with No. two high-pressure heaters (7), and the outlet of drawing gas of described No. two high-pressure heaters (7) is communicated with higher-pressure deaerator (8); Described gland heater (10) connecting axle gland leak-off pipeline, and on the front chemical feed water pipeline of the gland packing leakage outlet gland heater (10) of gland heater (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420828690.5U CN204880083U (en) | 2014-12-24 | 2014-12-24 | Cogeneration of heat and power backpressure formula heat regenerative system |
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| CN201420828690.5U CN204880083U (en) | 2014-12-24 | 2014-12-24 | Cogeneration of heat and power backpressure formula heat regenerative system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050320A (en) * | 2016-07-13 | 2016-10-26 | 东方电气集团东方汽轮机有限公司 | Water supply system of 1000MW grade air cooling steam turbine power generating unit and last-stage moving blade of water feed pump steam turbine |
| CN106989383A (en) * | 2017-03-30 | 2017-07-28 | 德清县中能热电有限公司 | A kind of two grades of deoxygenation energy conserving systems |
| CN108023360A (en) * | 2017-12-27 | 2018-05-11 | 浙江大学 | Avoided the peak hour and the participation peak load regulation network steam power plant of heat supply network heat accumulation and peak regulating method based on thermoelectricity |
| CN108105748A (en) * | 2017-12-27 | 2018-06-01 | 浙江大学 | The high energy efficiency co-generation unit of mesolow combined heat |
| CN110410161A (en) * | 2019-05-15 | 2019-11-05 | 程琛 | A kind of back pressure turbine quick start method based on cold end optimization |
-
2014
- 2014-12-24 CN CN201420828690.5U patent/CN204880083U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050320A (en) * | 2016-07-13 | 2016-10-26 | 东方电气集团东方汽轮机有限公司 | Water supply system of 1000MW grade air cooling steam turbine power generating unit and last-stage moving blade of water feed pump steam turbine |
| CN106989383A (en) * | 2017-03-30 | 2017-07-28 | 德清县中能热电有限公司 | A kind of two grades of deoxygenation energy conserving systems |
| CN108023360A (en) * | 2017-12-27 | 2018-05-11 | 浙江大学 | Avoided the peak hour and the participation peak load regulation network steam power plant of heat supply network heat accumulation and peak regulating method based on thermoelectricity |
| CN108105748A (en) * | 2017-12-27 | 2018-06-01 | 浙江大学 | The high energy efficiency co-generation unit of mesolow combined heat |
| CN108105748B (en) * | 2017-12-27 | 2019-08-02 | 浙江大学 | The high energy efficiency co-generation unit of mesolow combined heat |
| CN110410161A (en) * | 2019-05-15 | 2019-11-05 | 程琛 | A kind of back pressure turbine quick start method based on cold end optimization |
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