CN203052800U - Condensation heat recovery heat supply device for power plant - Google Patents

Condensation heat recovery heat supply device for power plant Download PDF

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Publication number
CN203052800U
CN203052800U CN 201220722542 CN201220722542U CN203052800U CN 203052800 U CN203052800 U CN 203052800U CN 201220722542 CN201220722542 CN 201220722542 CN 201220722542 U CN201220722542 U CN 201220722542U CN 203052800 U CN203052800 U CN 203052800U
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China
Prior art keywords
heat
cooling water
water
condensation
power plant
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Expired - Fee Related
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CN 201220722542
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Chinese (zh)
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李同强
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李同强
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Abstract

The utility model relates to a heat recovery system, and discloses a condensation heat recovery heat supply device for a power plant. The condensation heat recovery heat supply device for the power plant comprises a steam pipeline and a circulating cooling water pipeline. The condensation heat recovery heat supply device for the power plant is characterized by further comprising a heat supply pipeline, the heat supply pipeline is fed into a heat supply network through a steam-water heat exchanger after passing through an absorption heat pump, and a loop is formed. According to the condensation heat recovery heat supply device for the power plant, condensation heat is recycled through the heat exchanging mode of the absorption heat pump, and condensation heat of the power plant and waste heat in the circulating cooling water are recycled. In addition, an emergency heat supply system is arranged, return water in the heat supply network can be heated directly through the steam-water heat exchanger when climate is especially cold, and the condensation heat recovery heat supply device for the power plant has the advantages of high heat recovery and usage rate, energy conservation and emission reduction and the like..

Description

The heat of condensation that is used for the power plant reclaims heating plant
Technical field
The utility model relates to a kind of power plant waste heat heat reclamation device, relates in particular to a kind of heat of condensation for the power plant and reclaims heating plant.
Background technology
The thermal power plant condensation heat enters atmosphere by cooling tower or air cooling island and forms huge heat-energy losses, is the low main cause of thermal power plant energy use efficiency, not only causes the waste of big energy and water or electricity, has also seriously polluted atmosphere simultaneously.Thermal power plant condensation heat emptying is the ubiquitous problem in China and even the world, is waste, also is helpless.Yet along with the development of heat pump techniques, the particularly appearance of large high-temperature water resource heat pump makes the recovery of generating set condensation waste heat will become possibility.
The utility model content
The utility model is difficult to reclaim and the problem of utilizing at the used heat that condenses in the prior art, provides a kind of employing heat pump techniques to reclaim the hot heating system of power plant condensation.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of heat of condensation for the power plant reclaims heating plant, comprises steam pipework, recirculated cooling water pipeline, it is characterized in that: also comprise heat supplying pipeline, described heat supplying pipeline is sent into heat supply network through behind the absorption heat pump by vapor-water heat exchanger, and forms the loop.Contain a large amount of waste heats in the circulating cooling water of power plant, heat supplying pipeline reclaims waste heat in the circulating cooling water of power plant by absorption heat pump, and then is transported to hot user side, realizes Waste Heat Recovery and heat supply.
As preferably, the described heat of condensation for the power plant reclaims heating plant and also comprises the steam-water heat exchanging pipeline, and described steam-water heat exchanging pipeline is provided with vapor-water heat exchanger, and steam turbine is bled through through after the vapor-water heat exchanger heat release, forms condensed water and discharges; Described steam-water heat exchanging pipeline improves a hot net water temperature through vapor-water heat exchanger, and offers hot user.
Described steam-water heat exchanging pipeline is provided with control valve a and control valve b, and control valve a is positioned at before the absorption heat pump, is used for adjusting the steam-water heat exchanging pipeline through the steam flow amount size of absorption heat pump; Control valve b is positioned at before the vapor-water heat exchanger, is used for the air-flow size that control enters vapor-water heat exchanger, and then the use amount of control steam-water heat exchanging pipeline.
In needs heatings, but temperature is not under the very low situation, to open control valve a, closes control valve b, and then the steam-water heat exchanging pipeline is not had an effect, and after steam turbine draws gas and enters the absorption heat pump heat absorption, forms condensed water and discharges; This moment, heat supplying pipeline absorbed heat by absorption heat pump, can make the heat supply network return water temperature be increased to 80-88 C, and the heat supply network backwater after the heating enters heat supply network one time through vapor-water heat exchanger.
When weather is cold especially, open control valve a and control valve b, change the aperture of control valve b, adjusting enters the steam flow amount of vapor-water heat exchanger, thereby the heat supply water of heat supplying pipeline after by absorption heat pump suction temperature is entered vapor-water heat exchanger more further to be heated, the hot net water temperature is increased to more than 95 C, and the hot net water after the heating enters heat supply network one time, is used for heat supply.
As preferably, described recirculated cooling water pipeline makes the cooling water in recirculated cooling water pond get back to the recirculated cooling water pond later on through recirculated cooling water pump, condenser, absorption heat pump, forms the loop.Give heat supplying pipeline by absorption heat pump with the thermal energy transfer in the recirculated cooling water pipeline, improved the utilization rate of heat energy, reach the energy-saving and emission-reduction purpose.
The described heat of condensation for the power plant reclaims heating plant and also comprises standby recirculated cooling water pipeline, described standby recirculated cooling water pipeline makes the cooling water in recirculated cooling water pond get back to the recirculated cooling water pond later on through recirculated cooling water pump, condenser, cooling tower, forms the loop.Described recirculated cooling water pipeline is provided with control valve a, is positioned at before the absorption heat pump.Described standby cooling water circulation line is provided with control valve b, is positioned at before the cooling tower.When absorption heat pump can not normally use, closed control valve a, opening controlling valve b, then cooling water is without absorption heat pump, but through standby cooling water circulation line, carries out cool cycles by cooling tower.Making recirculated cooling water can participate in heating system also can be independent of outside the heating system.
As preferably, described steam pipework is delivered to condenser through the exhaust steam that steam turbine acting back produces, and exhaust steam is given thermal energy transfer through condenser and coagulated water behind the cooling water in the recirculated cooling water pipeline and discharge.
The utility model realizes coagulating recuperation of heat by the heat exchange method of absorption heat pump, reclaim the waste heat in power plant's condensation heat, the recirculated cooling water, and be provided with emergent heating system, weather can directly heat hot net water by vapor-water heat exchanger when cold especially, has heat energy recycle rate height, advantages such as energy-saving and emission-reduction.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Wherein: 1-steam pipework, 2-recirculated cooling water pipeline, 3-steam-water heat exchanging pipeline, 4-standby recirculated cooling water pipeline, 5-heat supplying pipeline, 6-vapor-water heat exchanger, 7-absorption heat pump, 11-steam turbine, 12-condenser, 21-recirculated cooling water pump, 22-recirculated cooling water pond, 23-control valve a, 31-control valve a, 32-control valve b, 41-cooling tower, 42-control valve b.
The specific embodiment
Below in conjunction with accompanying drawing 1 and specific embodiment the utility model is described in further detail:
A kind of heat of condensation for the power plant reclaims heating plant, as shown in Figure 1, comprises steam pipework 1, cooling water circulation line 2, steam-water heat exchanging pipeline 3, standby cooling water circulation line 4 and heat supplying pipeline 5.
The steam of described steam pipework 1 is sent into steam turbine 11 acting, and the exhaust steam that discharge steam turbine 11 acting backs is delivered to condenser 12, and exhaust steam is given thermal energy transfer through condenser 12 and condensed into water behind the cooling water in the recirculated cooling water pipeline 2 and discharge.
Described steam-water heat exchanging pipeline 3 is provided with vapor-water heat exchanger 6, and connects absorption heat pump 7.Steam turbine is bled and is entered vapor-water heat exchanger 6 heat exchange to heat supplying pipeline (heat supply network) 5, after steam process absorption heat pump 7 heat absorptions in the steam-water heat exchanging pipeline 3, forms condensed water and discharges.Described steam-water heat exchanging pipeline 3 carries out the water temperature that the part heat release improves heat supplying pipeline (heat supply network) 5 through vapor-water heat exchanger 6; Steam turbine is bled and is delivered to absorption heat pump 7 as the driving heat source of absorption heat pump 7, and absorption heat pump 7 reclaims the used heat that condenser 12 is discharged recirculated cooling water, and offers heat supplying pipeline (heat supply network) 5 after heating up.
Described steam-water heat exchanging pipeline 3 also is provided with control valve a31 and control valve b32, and control valve a31 is positioned at before the absorption heat pump 7, is used for adjusting steam-water heat exchanging pipeline 3 through the steam flow amount size of absorption heat pump 7; Control valve b32 is positioned at before the vapor-water heat exchanger 6, is used for the steam flow amount size that control enters vapor-water heat exchanger 6, and then the use amount of control steam-water heat exchanging pipeline 3.For different weather conditions, can be by the switching size of control valve a31 and control valve b32, control heating load, the heat supply temperature of a constant heat supply network.
In needs heatings, but temperature is not under the very low situation, to open control valve a31, closes control valve b32, and then vapor-water heat exchanger is not had an effect, and after extracted steam from turbine enters absorption heat pump 7 heat absorptions, forms condensed water and discharges; This moment, heat supplying pipeline 5 absorbed heat by absorption heat pump 7, can make the heat supply network return water temperature be increased to 80-88 C, and the heat supply network backwater after the heating enters heat supply network one time through vapor-water heat exchanger 6.
When weather is cold especially, open control valve a31 and control valve b32, change the aperture of control valve b32, adjusting enters the steam flow amount of vapor-water heat exchanger (6), thereby heat supplying pipeline is inhaled (7) heat supply water after heating up by absorption heat pump enter further heating of vapor-water heat exchanger (6) again, the hot net water temperature is increased to more than 95 C, and the hot net water after the heating enters heat supply network one time, is used for heat supply.
Described recirculated cooling water pipeline 2 makes the cooling water in recirculated cooling water pond 22 get back to later recirculated cooling water pond 22 through recirculated cooling water pump 21, condenser 12, control valve 23, absorption heat pump 7, forms the loop.The cooling water that has heat energy through absorption heat pump 7 and absorption heat pump 7 in extraction waste thermal energy and heat supplying pipeline 5 carry out heat exchange.Give heat supplying pipeline 5 by absorption heat pump 7 with the thermal energy transfer in the cooling water circulation line 2, improved the utilization rate of heat energy, reach the energy-saving and emission-reduction purpose.
Present embodiment also comprises standby recirculated cooling water pipeline 4, described standby recirculated cooling water pipeline 4 makes the cooling water in recirculated cooling water pond 22 get back to later recirculated cooling water pond 22 through recirculated cooling water pump 21, condenser 12, control valve 42, cooling tower 41, forms the loop.Described recirculated cooling water pipeline 2 is provided with control valve a23, is positioned at before the absorption heat pump 7.Described standby cooling water circulation line 4 is provided with control valve b42, is positioned at before the cooling tower 41.When absorption heat pump 7 can not normally use, closed control valve a23, opening controlling valve b42, then cooling water is without absorption heat pump 7, but through standby cooling water circulation line 4, carries out cool cycles by cooling tower 41.Making the cooling water circulation can participate in heating system also can be independent of outside the heating system.
Present embodiment also comprises heat supplying pipeline 5, and described heat supplying pipeline 5 is sent into heat supply network through absorption heat pump 7 backs by vapor-water heat exchanger 6, and forms the loop.The waste heat that heat supplying pipeline reclaims in the circulating cooling water of power plant by absorption heat pump 7, and then be transported to hot user side, realize Waste Heat Recovery and heat supply.
More than the heat of condensation for the power plant provided by the utility model reclaimed heating plant be described in detail, for one of ordinary skill in the art, thought according to the utility model embodiment, the part that all can change in specific embodiments and applications can be done respective change according to actual needs.In sum, this description should not be construed as restriction of the present utility model.

Claims (9)

1. a heat of condensation that is used for the power plant reclaims heating plant, comprise steam pipework (1), recirculated cooling water pipeline (2), it is characterized in that: also comprise heat supplying pipeline (5), described heat supplying pipeline (5) is sent into heat supply network through absorption heat pump (7) back by vapor-water heat exchanger (6), and forms the loop.
2. the heat of condensation for the power plant according to claim 1 reclaims heating plant, it is characterized in that: the described heat of condensation for the power plant reclaims heating plant and also comprises steam-water heat exchanging pipeline (3), described steam-water heat exchanging pipeline (3) is provided with vapor-water heat exchanger (6), steam turbine is bled through after vapor-water heat exchanger (6) heat release, forms condensed water and discharges.
3. the heat of condensation for the power plant according to claim 1 reclaims heating plant, it is characterized in that: described steam pipework (1) is delivered to condenser (12) through the exhaust steam that steam turbine (11) acting back produces, and exhaust steam is given thermal energy transfer through condenser (12) and become with fixed attention water behind the cooling water in the cooling water circulation line (2) and discharge.
4. the heat of condensation for the power plant according to claim 1 reclaims heating plant, it is characterized in that: described recirculated cooling water pipeline (2) makes the cooling water in recirculated cooling water pond (22) get back to later recirculated cooling water pond (22) through recirculated cooling water pump (21), condenser (12), absorption heat pump (7), forms the loop.
5. the heat of condensation for the power plant according to claim 1 reclaims heating plant, it is characterized in that: the described heat of condensation for the power plant reclaims heating plant and also comprises standby cooling water circulation line (4), described standby cooling water circulation line (4) makes the cooling water in recirculated cooling water pond (22) get back to later recirculated cooling water pond (22) through recirculated cooling water pump (21), condenser (12), cooling tower (41), forms the loop.
6. the heat of condensation for the power plant according to claim 2 reclaims heating plant, it is characterized in that: steam-water heat exchanging pipeline (3) is provided with control valve a(31), be positioned at absorption heat pump (7) before, be used for adjusting steam-water heat exchanging pipeline (3) through the steam flow amount size of absorption heat pump (7).
7. reclaim heating plant according to claim 2 or 6 any described heats of condensation for the power plant, it is characterized in that: by control valve b(32) control steam-water heat exchanging pipeline (3) size of opening, regulate the throttle flow of vapor-water heat exchanger (6), thereby improve the water temperature of removing a heat supply network.
8. reclaim heating plant according to any described heat of condensation for the power plant of claim 1 to 6, it is characterized in that: described recirculated cooling water pipeline (2) is provided with control valve a(23), be positioned at absorption heat pump (7) before.
9. the heat of condensation for the power plant according to claim 5 reclaims heating plant, and it is characterized in that: described standby cooling water circulation line (4) is provided with control valve b(42), be positioned at cooling tower (41) before.
CN 201220722542 2012-12-25 2012-12-25 Condensation heat recovery heat supply device for power plant Expired - Fee Related CN203052800U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220722542 CN203052800U (en) 2012-12-25 2012-12-25 Condensation heat recovery heat supply device for power plant

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Application Number Priority Date Filing Date Title
CN 201220722542 CN203052800U (en) 2012-12-25 2012-12-25 Condensation heat recovery heat supply device for power plant

Publications (1)

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CN203052800U true CN203052800U (en) 2013-07-10

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103017237A (en) * 2012-12-25 2013-04-03 浙江工商大学 Condensation heat recycle and supply system of power plant
CN103726892A (en) * 2013-12-20 2014-04-16 山东四化环保节能工程有限公司 Circulating water waste-heat utilization device of turbine
CN104197585A (en) * 2014-09-02 2014-12-10 湖南省工业设备安装有限公司 Combined type heat pump and heat source system and method for heat exchanging through power plant cooling system
CN105823111A (en) * 2016-05-23 2016-08-03 燕山大学 Steam exhaust waste heat recovery system based on unit wet cooling unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103017237A (en) * 2012-12-25 2013-04-03 浙江工商大学 Condensation heat recycle and supply system of power plant
CN103726892A (en) * 2013-12-20 2014-04-16 山东四化环保节能工程有限公司 Circulating water waste-heat utilization device of turbine
CN104197585A (en) * 2014-09-02 2014-12-10 湖南省工业设备安装有限公司 Combined type heat pump and heat source system and method for heat exchanging through power plant cooling system
CN105823111A (en) * 2016-05-23 2016-08-03 燕山大学 Steam exhaust waste heat recovery system based on unit wet cooling unit

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EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130710

Termination date: 20141225