CN204552847U - Air-Cooling Island water of condensation potential energy utilizes system - Google Patents

Air-Cooling Island water of condensation potential energy utilizes system Download PDF

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Publication number
CN204552847U
CN204552847U CN201520219726.4U CN201520219726U CN204552847U CN 204552847 U CN204552847 U CN 204552847U CN 201520219726 U CN201520219726 U CN 201520219726U CN 204552847 U CN204552847 U CN 204552847U
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China
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air
water
condensation
cooling
potential energy
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Expired - Fee Related
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CN201520219726.4U
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Chinese (zh)
Inventor
吕凯
万超
荆涛
李高潮
章治国
穆琳
程小飞
陈胜利
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Xian Thermal Power Research Institute Co Ltd
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Thermal Power Research Institute
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Abstract

The utility model discloses a kind of Air-Cooling Island water of condensation potential energy and utilize system, comprise steam turbine, the steam exhaust device of steam turbine is connected with the air cooling condenser be arranged on above Air-Cooling Island platform by blow-off line; Enter the cooling-air that steam in air cooling condenser and air cooling blower fan produce and carry out convection heat exchange, after steam-condensation, import the water of condensation lower collecting box being positioned at air cooling condenser; The below of water of condensation lower collecting box is provided with the water turbine of the potential energy for reclaiming the water of condensation from Air-Cooling Island backflow, and water turbine is connected with hydraulic turbine generator.The utility model is under the prerequisite meeting Direct Air Cooling Power Plants condensate system Functional Requirement, and potential energy a considerable number of in effective recycling Air-Cooling Island coagulation hydroenergy backwater, improves unit economy, to the safe operation of unit without any adverse effect.

Description

Air-Cooling Island water of condensation potential energy utilizes system
Technical field
The utility model belongs to energy regenerating and utilizes field, relates to a kind of Direct Air Cooling Power Plants cold end system, is specifically related to a kind of Air-Cooling Island water of condensation potential energy and utilizes system.
Background technique
Prospect of Utility Air Cooling is as the effective water-saving thermal power generating technology of current one, and in the power industry in the deficienter area of water resources, extensive use is trend of the times.Look forward to the future, Electric Factory Air-Cooling technical prospect is still had an optimistic view of, and it can not only be applied to water-deficient area, even if the area abundant at water source, from reducing water resources consumption, promoting the angle of sustainable utilization of water resource also to have very high actual application value.
At home, at most, being secondly cold group between table solidifying formula, is finally cold group between mixed condensation type in Direct Air-cooled Unit application.More than 60% of Direct Air-cooled Unit duty cold kludge capacity.In Direct Air-cooled Unit, flow through the turbine discharge of air cooling condenser fin tube and the pressure air stream generation heat exchange of pipe external cause air cooling blower fan group generation, its heat transfer effect depends on the convection transfer rate of pipe outer air side, for ensureing condensation number, air cooling condenser heat exchange area is huge, air stream is forced to pass rapidly through air cooling condenser, its temperature rise is limited, therefore need the air of nominal mass flow, thus air cooling system need arrange the blower fan of some, and the blower fan quantity of 300MW grade draught fan group is 30 (5 row 6 arrange) or 35 (5 row 7 arrange); The blower fan quantity of 600MW grade is 56 (7 row 8 arrange) or 64 (8 row 8 arrange).For ensureing air cooling blower fan group air-suction performance in an outdoor environment, air cooling blower fan needs framework on the platform of certain altitude, and according to statistics, the Air-Cooling Island podium level of 300MW grade is 35m, the Air-Cooling Island podium level of 600MW grade is the Air-Cooling Island podium level of 45m, 1000MW grade is 50m.Turbine discharge confluxes to the water of condensation header of each row after air cooling condenser condensation, then is back to hot well by two condensate return pipes by gravitational potential energy driving.(condensing water flow of 300MW grade is 700t/h to large discharge like this, the condensing water flow of 600MW grade is 1400t/h, the condensing water flow of 1000MW grade is 1900t/h), the energy of high potential difference, except the various resistances overcoming coagulation hydroenergy backwater pipeline, a considerable number of energy is still had not to be used and to lose.
In summary, if effective technology measure can be taked to be recycled by Air-Cooling Island coagulation hydroenergy backwater potential energy, then energy regenerating can be realized, the Technical Economy of effective raising Direct Air-cooled Unit, especially power station enterprise to country about a kind of active response of the fundamental policy of energy-saving and emission-reduction and realization.
Model utility content
The purpose of this utility model is to solve the problem, propose a kind of Air-Cooling Island water of condensation potential energy and utilize system, this system is under the prerequisite ensureing power station condensate system Functional Requirement, make full use of Air-Cooling Island coagulation hydroenergy backwater potential energy, realize energy regenerating, improve the Technical Economy of Direct Air-cooled Unit.
To achieve these goals, the utility model is achieved by the following technical solutions:
Air-Cooling Island water of condensation potential energy utilizes system, comprises steam turbine, and the steam exhaust device of steam turbine is connected with the air cooling condenser be arranged on above Air-Cooling Island platform by blow-off line; Enter the cooling-air that steam in air cooling condenser and air cooling blower fan produce and carry out convection heat exchange, after steam-condensation, import the water of condensation lower collecting box being positioned at air cooling condenser; The below of water of condensation lower collecting box is provided with the water turbine of the potential energy for reclaiming the water of condensation from Air-Cooling Island backflow, and water turbine is connected with hydraulic turbine generator; Coagulation hydroenergy backwater after hydraulic turbine generator acting flows into the hot well run under vacuo by drain water piping, the water of condensation in hot well, after condensate pump boosting, enters in heating power heat regenerative system and absorbs heat.
Described air cooling condenser is arranged at above Air-Cooling Island platform, arranges in " ∧ " shape.
Described air cooling blower fan adopts axial-flow blower, and is arranged at the below of Air-Cooling Island platform.
Described water turbine adopts low head water turbine, and its outer pipe is connected with hot well.
Described hydraulic turbine generator is asynchronous alternating current generator.
Described water of condensation delivery side of pump is connected with gland heater, and the water of condensation after boosting enters in heating power heat regenerative system after gland heater heating absorbs heat.
Compared with prior art, the utility model has following beneficial effect:
The utility model is under the prerequisite meeting Direct Air Cooling Power Plants condensate system Functional Requirement, and potential energy a considerable number of in effective recycling Air-Cooling Island coagulation hydroenergy backwater, improves unit economy, to the safe operation of unit without any adverse effect.The utility model, under the prerequisite meeting Direct Air Cooling Power Plants condensate system functional requisite, has recycled potential energy a considerable number of in Air-Cooling Island coagulation hydroenergy backwater, improves unit economy.300MW grade Direct Air-cooled Unit, annual earnings 6.7 ten thousand yuan; 600MW grade Direct Air-cooled Unit, annual earnings 18.8 ten thousand yuan; 1000MW grade Direct Air-cooled Unit, annual earnings 32.7 ten thousand yuan of economic benefits are obvious.In addition, energy-conservationly to mean under same unit load that the pollutant discharge amounts such as nitrogen oxide decline, obvious environment benefit.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Wherein, 1 is steam turbine; 2 is steam exhaust device; 3 is hot well; 4 is blow-off line; 5 is air cooling condenser; 6 is air cooling blower fan; 7 is water of condensation header; 8 is hydraulic turbine generator; 9 is coagulation hydroenergy backwater pipeline; 10 is condensate pump; 11 is gland heater.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, the utility model comprises steam turbine 1, the steam exhaust device 2 of steam turbine 1 by blow-off line 4 be arranged on the air cooling condenser 5 arranged in " ∧ " shape above Air-Cooling Island platform and be connected; Enter the cooling-air that steam in air cooling condenser 5 and air cooling blower fan 6 produce and carry out convection heat exchange, air cooling blower fan 6 adopts axial-flow blower, and is arranged at the below of Air-Cooling Island platform.The water of condensation lower collecting box 7 being positioned at air cooling condenser 5 is imported after steam-condensation; The below of water of condensation lower collecting box 7 is provided with the water turbine of the potential energy for reclaiming the water of condensation from Air-Cooling Island backflow, and water turbine is connected with hydraulic turbine generator 8, and hydraulic turbine generator 8 is asynchronous alternating current generator.; Water turbine adopts low head water turbine, and its outer pipe is connected with hot well 3.Coagulation hydroenergy backwater after hydraulic turbine generator 8 does work flows into the hot well 3 run under vacuo by drain water piping, the outlet of hot well 3 connects condensate pump 10, water of condensation enters condensate pump 10 and boosts, the outlet of condensate pump 10 is connected with gland heater 11, and the water of condensation after boosting enters in heating power heat regenerative system after gland heater 11 heats absorbs heat.
Principle of the present utility model and working procedure:
The utility model, for the needs ensureing air cooling blower fan group air draught effect, needs platform to arrange certain height.According to statistics, the Air-Cooling Island podium level of the Air-Cooling Island podium level of domestic 300MW grade to be the Air-Cooling Island podium level of 35m, 600MW grade be 45m, 100MW grade is 50m.Turbine discharge confluxes to the water of condensation header of each row after air cooling condenser condensation, then is back to hot well by two condensate return pipes by gravitational potential energy driving.(condensing water flow of 300MW grade is 700t/h to large discharge like this, the condensing water flow of 600MW grade is 1400t/h, the condensing water flow of 100MW grade is 1900t/h), the energy of high potential difference, except overcoming the various resistance of coagulation hydroenergy backwater and ensureing not occur except cavitation, a considerable number of energy is still had to lose in vain.The utility model proposes a kind of energy use technology, under the prerequisite ensureing power station condensate system Functional Requirement, make full use of Air-Cooling Island coagulation hydroenergy backwater potential energy, realize energy regenerating, improve the Technical Economy of Direct Air-cooled Unit.
As shown in Figure 1, the utility model steam turbine 1 steam discharge is introduced in the air cooling condenser 5 being arranged on and arranging in " ∧ " shape above Air-Cooling Island platform through blow-off line 4 and steam-distributing pipe, carry out forced-convection heat transfer with the cooling-air produced by the axial-flow blower effect below Air-Cooling Island platform, after steam-condensation, import the water of condensation lower collecting box 7 of air cooling condenser 5.
By theory calculate and numerical simulation, according to condensing water flow and corresponding head height, under the prerequisite of cavitation does not occur for the various resistance and guarantee that meet coagulation hydroenergy backwater pipeline, carry out the optimized Selection of water turbine, the water turbine of configuration corresponding power, recycles partial coagulation water potential energy.
Water turbine is low head water turbine, and its outer pipe is connected with the hot well run under vacuum.The Main Function of water turbine is exactly the potential energy of the water of condensation reclaimed from Air-Cooling Island backflow, drives hydraulic turbine generator to send electric energy.Hydraulic turbine generator is asynchronous alternating current generator.
Water of condensation, after hydraulic turbine generator 8 does work, is back to the hot well 3 below steam exhaust device, after condensate pump 10 boosts, enters in heating power heat regenerative system and absorbs heat.
Above content is only and technological thought of the present utility model is described; protection domain of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technological scheme basis is done, within the protection domain all falling into the utility model claims.

Claims (6)

1. Air-Cooling Island water of condensation potential energy utilizes system, it is characterized in that: comprise steam turbine (1), the steam exhaust device (2) of steam turbine (1) is connected with the air cooling condenser be arranged on above Air-Cooling Island platform (5) by blow-off line (4); Enter the cooling-air that steam in air cooling condenser (5) and air cooling blower fan (6) produce and carry out convection heat exchange, after steam-condensation, import the water of condensation lower collecting box (7) being positioned at air cooling condenser (5); The below of water of condensation lower collecting box (7) is provided with the water turbine of the potential energy for reclaiming the water of condensation from Air-Cooling Island backflow, and water turbine is connected with hydraulic turbine generator (8); Coagulation hydroenergy backwater after hydraulic turbine generator (8) acting flows into the hot well (3) run under vacuo by drain water piping, water of condensation in hot well (3), after condensate pump (10) boosting, enters in heating power heat regenerative system and absorbs heat.
2. Air-Cooling Island water of condensation potential energy according to claim 1 utilizes system, it is characterized in that: described air cooling condenser (5) is arranged at above Air-Cooling Island platform, arranges in " ∧ " shape.
3. Air-Cooling Island water of condensation potential energy according to claim 1 utilizes system, it is characterized in that: described air cooling blower fan (6) adopts axial-flow blower, and is arranged at the below of Air-Cooling Island platform.
4. Air-Cooling Island water of condensation potential energy according to claim 1 utilizes system, it is characterized in that: described water turbine adopts low head water turbine, and its outer pipe is connected with hot well (3).
5. the Air-Cooling Island water of condensation potential energy according to claim 1 or 4 utilizes system, it is characterized in that: described hydraulic turbine generator (8) is asynchronous alternating current generator.
6. Air-Cooling Island water of condensation potential energy according to claim 1 utilizes system, it is characterized in that: the outlet of described condensate pump (10) is connected with gland heater (11), the water of condensation after boosting enters in heating power heat regenerative system after gland heater (11) heating absorbs heat.
CN201520219726.4U 2015-04-13 2015-04-13 Air-Cooling Island water of condensation potential energy utilizes system Expired - Fee Related CN204552847U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806309A (en) * 2015-04-13 2015-07-29 西安热工研究院有限公司 Air cooling island condensed water potential energy utilizing system
CN110159476A (en) * 2019-06-21 2019-08-23 华电重工股份有限公司 A kind of air-cooled pipe-line system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806309A (en) * 2015-04-13 2015-07-29 西安热工研究院有限公司 Air cooling island condensed water potential energy utilizing system
CN110159476A (en) * 2019-06-21 2019-08-23 华电重工股份有限公司 A kind of air-cooled pipe-line system

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Granted publication date: 20150812

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