CN204552846U - A kind of back pressure steam turbines utilization system - Google Patents
A kind of back pressure steam turbines utilization system Download PDFInfo
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- CN204552846U CN204552846U CN201520051986.5U CN201520051986U CN204552846U CN 204552846 U CN204552846 U CN 204552846U CN 201520051986 U CN201520051986 U CN 201520051986U CN 204552846 U CN204552846 U CN 204552846U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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Abstract
The utility model provides a kind of back pressure steam turbines utilization system, comprising: turbine generating system, thermal load (5) and ORC power generation system (4); Thermal load 5 is parallel with ORC power generation system 4; By the aperture state of free adjusting the 1st regulating valve 13, the 2nd regulating valve 14 and the 3rd regulating valve 12, can realize when the total steam producing amount of boiler is constant, regulate the displacement being used for heat supply and the displacement generated electricity for ORC, and then change heating load and ORC generated energy, to adapt to the fluctuation of heat load, reach the advantage improving Utilization ratio, simultaneously satisfied heat and need for electricity.
Description
Technical field
The utility model belongs to industrial energy saving technical field, is specifically related to a kind of back pressure steam turbines utilization system.
Background technique
The steam discharge of back pressure steam turbines can be used for heat supply, comprising: boiler, steam turbine and thermal load; Wherein, the high-temperature steam mouth of boiler is communicated with the steam inlet of steam turbine by steam guiding tube, by boiler, to steam turbine conveying high-temperature steam; The steam ouput of steam turbine is connected with thermal load, for providing heat energy to thermal load.
But back pressure steam turbines is a co-generation unit, and its electric power sent is determined by heat load, that is: electricity determining by heat, that is, the restriction of the generated energy affected by hot loading of back pressure steam turbines, in summer, heat load is lower, therefore, need the total steam producing amount regulating boiler, total steam producing amount of boiler is reduced, thus adapts to heat load, but, while the total steam producing amount of reduction, because the throttle flow of steam turbine reduces, thus the generated energy of steam turbine is directly caused to reduce; Under serious conditions, if heat load is too low, can steam turbine set be directly caused to be stopped transport.In the winter time, heat load is dynamic fluctuation, therefore, needs the frequent total steam producing amount regulating boiler, thus total steam producing amount of boiler and heat load are adapted, therefore, on the one hand, increase workload, add and use burden; On the other hand, when heat load reduces, need the total steam producing amount turning down boiler, and when total steam producing amount of boiler diminishes, directly cause the generated energy of steam turbine to fall little, cause the reduction of Utilization ratio.
As can be seen here, the production run of traditional back pressure steam turbines, can not adapt to the fluctuation of heat load well, cause Utilization ratio to reduce.
Model utility content
For the defect that prior art exists, the utility model provides a kind of back pressure steam turbines utilization system, can effectively solve the problem.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of back pressure steam turbines utilization system, comprising: turbine generating system, thermal load (5) and ORC power generation system (4);
Wherein, described turbine generating system comprises: boiler (1), steam turbine (2), the 1st heater (6), oxygen-eliminating device (7), condensate pump (8) and the 2nd heater (9);
The steam ouput of described boiler (1) is communicated to the steam inlet of described steam turbine (2) by the 1st gas pipeline; The extraction opening of described steam turbine (2) is communicated to the steam inlet of described 2nd heater (9) by extraction line; The blow-off line of described steam turbine (2) is divided into two branch roads, is respectively the 1st steam discharge branch road and the 2nd steam discharge branch road; Described 1st steam discharge branch road is communicated to the steam inlet of described thermal load (5); Described 2nd steam discharge branch road is communicated to the steam inlet of described ORC power generation system (4); Wherein, described 1st steam discharge branch road is provided with the 1st regulating valve (13); Described 2nd steam discharge branch road is provided with the 2nd regulating valve (14);
The drain opening of described thermal load (5) and the drain opening of described ORC power generation system (4) are all communicated to the 1st water intake of described oxygen-eliminating device (7) by drainage pipe; The water outlet of described oxygen-eliminating device (7) is communicated to the water intake of described 2nd heater (9) by described condensate pump (8); The water outlet of described 2nd heater (9) is communicated to the water intake of described boiler (1).
Preferably, also comprise: pressure reducer and attemperator (3); The steam ouput of described boiler (1) is directly communicated to the steam inlet of described thermal load (5) by the 2nd gas pipeline; At described 2nd gas pipeline, the 3rd regulating valve (12) is installed.
Preferably, described 1st heater (6) is gland heater.
Preferably, described 1st heater (6) is also communicated with chemistry filled water pipeline (11).
Preferably, also comprise: continuous blowdown flash tank (10); The water intake of described continuous blowdown flash tank (10) is communicated with the sewage draining exit of described boiler (1).
The back pressure steam turbines utilization system that the utility model provides has the following advantages: thermal load 5 is parallel with ORC power generation system 4; By the throttle flow of free adjusting thermal load 5 and ORC power generation system 4, can realize when the total steam producing amount of boiler is constant, change heating load and ORC generated energy, to adapt to the fluctuation of heat load, there is the adaptable advantage to heat load, thus raising Utilization ratio, simultaneously satisfied heat and need for electricity.
Accompanying drawing explanation
The structural representation of the back pressure steam turbines utilization system that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail:
Composition graphs 1, the utility model provides a kind of back pressure steam turbines utilization system, comprising: turbine generating system, thermal load 5 and ORC power generation system 4; Wherein, thermal load 5 can adopt heat exchanger;
Turbine generating system comprises: boiler 1, steam turbine 2, the 1st heater 6, oxygen-eliminating device 7, condensate pump 8 and the 2nd heater 9; In practical application, the 1st heater 6 can adopt gland heater; Also be communicated with chemistry filled water pipeline 11; 2nd heater 9 can adopt high-pressure heater;
The steam ouput of boiler 1 is communicated to the steam inlet of steam turbine 2 by the 1st gas pipeline; The extraction opening of steam turbine 2 is communicated to the steam inlet of the 2nd heater 9 by extraction line; The blow-off line of steam turbine 2 is divided into two branch roads, is respectively the 1st steam discharge branch road and the 2nd steam discharge branch road; 1st steam discharge branch road is communicated to the steam inlet of thermal load 5; 2nd steam discharge branch road is communicated to the steam inlet of ORC power generation system 4; Wherein, the 1st steam discharge branch road is provided with the 1st regulating valve 13; 2nd steam discharge branch road is provided with the 2nd regulating valve 14;
The drain opening of thermal load 5 and the drain opening of ORC power generation system 4 are all communicated to the 1st water intake of oxygen-eliminating device 7 by drainage pipe; The water outlet of oxygen-eliminating device 7 is communicated to the water intake of the 2nd heater 9 by condensate pump 8; The water outlet of the 2nd heater 9 is communicated to the water intake of boiler 1.
Also comprise: pressure reducer and attemperator 3; The steam ouput of boiler 1 is directly communicated to the steam inlet of thermal load 5 by the 2nd gas pipeline; At the 2nd gas pipeline, the 3rd regulating valve 12 is installed.
Also comprise: continuous blowdown flash tank 10; The water intake of continuous blowdown flash tank 10 is communicated with the sewage draining exit of boiler 1.
The back pressure steam turbines utilization system that the utility model provides, working principle is:
When system is normally run, boiler 1 produces high pressure steam, and the steam turbine 2 that high pressure steam enters back pressure type generates electricity; In addition, high pressure steam also by being provided with the pipeline communication of pressure reducer and attemperator 3 to thermal load 5, has the 3rd regulating valve 12 at this Pipe installing.Wherein, the fraction of steam turbine 2 draws gas and enters the 2nd heater 9, for carrying out preheating to condensed water.The steam discharge of steam turbine 2 divides two-part, and a part delivers to thermal load 5, for heat supply; Another part enters ORC power generation system 4, generates electricity.After steam is used for heat supply and ORC generating, condensation becomes condensed water, sends into oxygen-eliminating device 7.In addition, chemistry filled water 11 also sends into oxygen-eliminating device 7 after gland heater preheating.Liquid water in oxygen-eliminating device 7 is driven by condensate pump 8, carries out preheating through the 2nd heater 9, sends into boiler 1 afterwards, completion system circulation thus.
In the utility model, thermal load 5 is parallel with ORC power generation system 4; By the aperture state of free adjusting the 1st regulating valve 13, the 2nd regulating valve 14 and the 3rd regulating valve 12, can realize when the total steam producing amount of boiler is constant, regulate the displacement being used for heat supply and the displacement generated electricity for ORC, and then change heating load and ORC generated energy, to adapt to the fluctuation of heat load, reach the advantage improving Utilization ratio.
Concrete, when the total steam producing amount of boiler is constant, when in the winter time, because heat load is higher, therefore, tune up the 1st regulating valve 13, thus improve the displacement delivering to thermal load 5, meet thermal load demands; Meanwhile, turn the 2nd regulating valve 14 down, reduce the displacement sending into ORC power generation system 4.Thus, realize heating load and increase, ORC generated energy reduces, and meets the demand that heat load increases.Further, because steam turbine 2 throttle flow does not change, therefore, steam turbine power generation amount remains unchanged.
In the winter time under extreme case, if close the 2nd regulating valve 14, ORC power generation system 4 is stopped transport, then, open the 1st regulating valve 13 completely, make all steam discharges of steam turbine 2 all for heat supply, if this kind of situation still can not meet heat demand, then, need to open the 3rd regulating valve 12, make a part of high pressure steam by pressure reducer and attemperator, mix with the steam discharge of steam turbine 2, and deliver to thermal load 5, to meet heat demand.Now, heating load increases, and ORC power generation system 4 is stopped transport, and because the throttle flow of steam turbine reduces, therefore, steam turbine power generation amount reduces.
In summer, or the season that heating demand is little, turn the 1st regulating valve 13 down, the displacement delivering to thermal load 5 is reduced; Meanwhile, tune up the 2nd regulating valve 14, the displacement of feeding ORC power generation system 4 is increased.Now, total steam producing amount of boiler 1 is constant, and steam turbine power generation amount remains unchanged, heating load reduces, and ORC power generation system 4 generated energy increases, and solves in prior art, when heating load reduces, directly cause the generated energy of steam turbine to fall little, cause the problem that Utilization ratio reduces.
As can be seen here, in the utility model, thermal load 5 is parallel with ORC power generation system 4; By the throttle flow of free adjusting thermal load 5 and ORC power generation system 4, can realize when the total steam producing amount of boiler is constant, change heating load and ORC generated energy, to adapt to the fluctuation of heat load, there is the adaptable advantage to heat load, thus raising Utilization ratio, simultaneously satisfied heat and need for electricity.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should look protection domain of the present utility model.
Claims (5)
1. a back pressure steam turbines utilization system, is characterized in that, comprising: turbine generating system, thermal load (5) and ORC power generation system (4);
Wherein, described turbine generating system comprises: boiler (1), steam turbine (2), the 1st heater (6), oxygen-eliminating device (7), condensate pump (8) and the 2nd heater (9);
The steam ouput of described boiler (1) is communicated to the steam inlet of described steam turbine (2) by the 1st gas pipeline; The extraction opening of described steam turbine (2) is communicated to the steam inlet of described 2nd heater (9) by extraction line; The blow-off line of described steam turbine (2) is divided into two branch roads, is respectively the 1st steam discharge branch road and the 2nd steam discharge branch road; Described 1st steam discharge branch road is communicated to the steam inlet of described thermal load (5); Described 2nd steam discharge branch road is communicated to the steam inlet of described ORC power generation system (4); Wherein, described 1st steam discharge branch road is provided with the 1st regulating valve (13); Described 2nd steam discharge branch road is provided with the 2nd regulating valve (14);
The drain opening of described thermal load (5) and the drain opening of described ORC power generation system (4) are all communicated to the 1st water intake of described oxygen-eliminating device (7) by drainage pipe; The water outlet of described oxygen-eliminating device (7) is communicated to the water intake of described 2nd heater (9) by described condensate pump (8); The water outlet of described 2nd heater (9) is communicated to the water intake of described boiler (1).
2. back pressure steam turbines utilization system according to claim 1, is characterized in that, also comprise: pressure reducer and attemperator (3); The steam ouput of described boiler (1) is directly communicated to the steam inlet of described thermal load (5) by the 2nd gas pipeline; At described 2nd gas pipeline, the 3rd regulating valve (12) is installed.
3. back pressure steam turbines utilization system according to claim 1, is characterized in that, described 1st heater (6) is gland heater.
4. back pressure steam turbines utilization system according to claim 1, is characterized in that, described 1st heater (6) is also communicated with chemistry filled water pipeline (11).
5. back pressure steam turbines utilization system according to claim 1, is characterized in that, also comprise: continuous blowdown flash tank (10); The water intake of described continuous blowdown flash tank (10) is communicated with the sewage draining exit of described boiler (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520051986.5U CN204552846U (en) | 2015-01-26 | 2015-01-26 | A kind of back pressure steam turbines utilization system |
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| CN201520051986.5U CN204552846U (en) | 2015-01-26 | 2015-01-26 | A kind of back pressure steam turbines utilization system |
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| CN204552846U true CN204552846U (en) | 2015-08-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321175A (en) * | 2016-08-23 | 2017-01-11 | 中信重工机械股份有限公司 | Coal gas power generation system for steel mills |
| CN107842909A (en) * | 2017-10-13 | 2018-03-27 | 滕州富源低热值燃料热电有限公司 | A kind of system for expanding cogeneration of heat and power central heating scale |
| CN110185512A (en) * | 2019-05-29 | 2019-08-30 | 河南路卡贝节能技术有限公司 | A kind of supply system that industrial afterheat power generation is coupled with heat pump heating |
| CN111075521A (en) * | 2019-12-18 | 2020-04-28 | 北京石油化工学院 | High-low pressure double working medium ORC power generation system with regenerative cycle |
| CN112460668A (en) * | 2020-12-01 | 2021-03-09 | 福建晋江热电有限公司 | Undisturbed heat storage system and method for peak valley filling of back pressure type heat supply unit |
-
2015
- 2015-01-26 CN CN201520051986.5U patent/CN204552846U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321175A (en) * | 2016-08-23 | 2017-01-11 | 中信重工机械股份有限公司 | Coal gas power generation system for steel mills |
| CN107842909A (en) * | 2017-10-13 | 2018-03-27 | 滕州富源低热值燃料热电有限公司 | A kind of system for expanding cogeneration of heat and power central heating scale |
| CN110185512A (en) * | 2019-05-29 | 2019-08-30 | 河南路卡贝节能技术有限公司 | A kind of supply system that industrial afterheat power generation is coupled with heat pump heating |
| CN111075521A (en) * | 2019-12-18 | 2020-04-28 | 北京石油化工学院 | High-low pressure double working medium ORC power generation system with regenerative cycle |
| CN112460668A (en) * | 2020-12-01 | 2021-03-09 | 福建晋江热电有限公司 | Undisturbed heat storage system and method for peak valley filling of back pressure type heat supply unit |
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