CN207776921U - A kind of CHP Heating System based on absorption heat pump cycle - Google Patents

A kind of CHP Heating System based on absorption heat pump cycle Download PDF

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Publication number
CN207776921U
CN207776921U CN201721808822.8U CN201721808822U CN207776921U CN 207776921 U CN207776921 U CN 207776921U CN 201721808822 U CN201721808822 U CN 201721808822U CN 207776921 U CN207776921 U CN 207776921U
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condenser
heat
generator
absorber
heat pump
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CN201721808822.8U
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石慧
刘安
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Xian Thermal Power Research Institute Co Ltd
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Xian Thermal Power Research Institute Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/14Combined heat and power generation [CHP]

Abstract

The utility model discloses a kind of CHP Heating Systems based on absorption heat pump cycle, the utility model uses stand alone type design to facilitate arrangement and reduce cost on each heat exchanger that heat pump cycle needs, greatly improve system heat capacity, relevant device technology maturation, reliability higher, it is easy to maintain.The utility model improves classical heat pump thermodynamic cycle system, eliminates evaporator, the function of heat pump condenser is realized with the original heat exchangers for district heating group of power plant, can further decrease cost, improves system reliability.

Description

A kind of CHP Heating System based on absorption heat pump cycle
Technical field
The utility model belongs to cogeneration of heat and power technology field, and in particular to a kind of thermoelectricity connection based on absorption heat pump cycle Produce heating system.
Background technology
Heat supply can be carried out using the waste heat of turbine discharge using absorption heat pump in the cogeneration of heat and power of thermal power plant, no Unit heat capacity can be only greatly improved, and significantly reduces the consumption of heat supply available energy, improves thermal power plant unit energy utilization warp Ji property, is a technology being of great significance.
The prior art uses the absorption type heat pump assembly of Integrated design, Steam Turbine waste heat heat source is accessed, and provide height The driving steam source of pressure works.Itself the problem is that, heat pump unit single unit heat supply due to structure design Amount is difficult to greatly improve, and whole system cost is high, and operation and maintenance technology is more demanding, and heat pump performance declines comparatively fast, can It is relatively low by property.The main restricting factor promoted as restriction heat pump techniques.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of cogenerations of heat and power based on absorption heat pump cycle Heating system uses stand alone type design to facilitate arrangement and reduce cost on each heat exchanger that heat pump cycle needs, and can be just It is optimized in cyclic process, further increases available energy using level, greatly improve system heat capacity, relevant device skill Art is ripe, reliability higher.
In order to achieve the above object, the utility model includes steam turbine, and a part of heat supply steam extraction of steam turbine is as driving Vapour source is connected to generator, and another part heat supply steam extraction enters in heat exchangers for district heating group, and driving vapour source is cooled in generator Condensed water, condensed water are delivered to condenser;Turbine discharge as waste heat vapour source is connected to absorber, the solution in absorber It is delivered to generator as weak solution after absorption vapor, the vapor that the solution in generator discharges after being heated is delivered to cold Condenser discharges the concentrated solution after vapor and is delivered to absorber, and steam is delivered to condenser after condensing into water within the condenser;Heat Net return water supplies water after absorber, condenser and heat exchangers for district heating group are heated for heat supply network successively.
The solution heat exchanger for concentrated solution and weak solution heat exchange is provided between the generator and absorber.
Generator drain cooler is provided between the generator and condenser;
Condenser drain cooler is provided between the condenser and condenser.
The heat exchangers for district heating group includes the heat exchangers for district heating of several serial or parallel connections, and absorber, condenser and heat supply network add Hot device group is arranged using serial or parallel connection mode as needed.
The condenser can be realized using one in heat exchangers for district heating group, between condenser and generator between and Vapour source switching valve is both provided between condenser and steam turbine.
Evaporator is provided between the steam turbine and absorber, evaporator is also connected with condenser and condenser.
Condenser drain cooler is provided between the condenser and evaporator.
The utility model uses stand alone type design to be made to facilitate arrangement and reduce on each heat exchanger that heat pump cycle needs Valence, greatly improves system heat capacity, relevant device technology maturation, and reliability higher is easy to maintain.The utility model is to classics Heat pump thermodynamic cycle system improved, eliminate evaporator, heat pump realized with the original heat exchangers for district heating group of power plant The function of condenser can further decrease cost, improve system reliability.
Further, the utility model heat supply network recirculated water passes sequentially through absorber, condenser is heated, underheat portion Point continuing through traditional heat exchangers for district heating is heated.
Further, the driving vapour source of the utility model is hydrophobic by the heat release in drain cooler, to further increase Economy.
Description of the drawings
Fig. 1 is the system construction drawing of the utility model embodiment 1;
Fig. 2 is the system construction drawing of the utility model embodiment 2.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1,
Referring to Fig. 1, the utility model includes steam turbine 1, and a part of heat supply steam extraction of steam turbine 1 is as driving vapour source connection To generator 2, another part heat supply steam extraction enters in heat exchangers for district heating group 3, and driving vapour source is cooled to condensation in generator 2 Water, condensed water are delivered to condenser 4;1 steam discharge of steam turbine as waste heat vapour source is connected to absorber 5, the solution in absorber 5 It is delivered to generator 2 as weak solution after absorption vapor, the vapor that the solution in generator 2 discharges after being heated is delivered to Condenser 6 discharges the concentrated solution after vapor and is delivered to absorber 5, steam condensed into condenser 6 be delivered to after water it is solidifying Vapour device 4;Heat supply network return water supplies water after absorber 5, condenser 6 and heat exchangers for district heating group 3 are heated for heat supply network successively, occurs The solution heat exchanger 7 for concentrated solution and weak solution heat exchange, generator 2 and condenser 4 are provided between device 2 and absorber 5 Between be provided with generator drain cooler 8, condenser drain cooler 9,6 energy of condenser are provided between condenser 4 and condenser 6 Enough realized using one in heat exchangers for district heating group 3, between condenser 6 and generator 2 between and condenser 6 and steam turbine 1 Between be both provided with vapour source switching valve 10.
Preferably, heat exchangers for district heating group 3 includes the heat exchangers for district heating of several serial or parallel connections, absorber 5,6 and of condenser Heat exchangers for district heating group 3 is arranged using serial or parallel connection mode as needed.
The working method of the utility model includes the following steps:
The heat supply steam extraction of step 1, steam turbine 1 is delivered to heat exchangers for district heating group 3, and the driving vapour source of steam turbine 1 is delivered to hair The waste heat vapour source of raw device 2, steam turbine 1 is delivered to condenser 4 and absorber 5, and the driving vapour source of generator 2 is hydrophobic by occurring Enter condenser 4 after device drain cooler 8;
Step 2, the steam that the middle solution of generator 2 releases are delivered in condenser 6, and the concentrated solution in generator 2 is logical Enter absorber 5 after crossing solution heat exchanger 7, the weak solution that absorber 5 exports enters generator 2 after solution heat exchanger 7, dense Solution and weak solution carry out heat exchange in solution heat exchanger 7;
Step 3, heat supply network return water are used for heat supply network after absorber 5, condenser 6 and heat exchangers for district heating group 3 are heated successively It supplies water;
The waste heat vapour source of step 4,1 steam discharge of steam turbine enters absorber 5, becomes weak solution after being absorbed by solution;
Step 5, release steam enters 6 heat release of condenser condensation, steam condensate after the solution in generator 2 is heated Enter condenser 4 after condensed water drain cooler 9.
Embodiment 2:
Referring to Fig. 2, the utility model includes steam turbine 1, and a part of heat supply steam extraction of steam turbine 1 is as driving vapour source connection To generator 2, another part heat supply steam extraction enters in heat exchangers for district heating group 3, and driving vapour source is cooled to condensation in generator 2 Water, condensed water are delivered to condenser 4;1 steam discharge of steam turbine as waste heat vapour source is connected to absorber 5, the solution in absorber 5 It is delivered to generator 2 as weak solution after absorption vapor, the vapor that the solution in generator 2 discharges after being heated is delivered to Condenser 6 discharges the concentrated solution after vapor and is delivered to absorber 5, steam condensed into condenser 6 be delivered to after water it is solidifying Vapour device 4;Heat supply network return water supplies water after absorber 5, condenser 6 and heat exchangers for district heating group 3 are heated for heat supply network successively, occurs The solution heat exchanger 7 for concentrated solution and weak solution heat exchange, generator 2 and condenser 4 are provided between device 2 and absorber 5 Between be provided with generator drain cooler 8, evaporator 11 is provided between steam turbine 1 and absorber 5, evaporator 11 is also connected with condensing Device 4 and condenser 6, are provided with condenser drain cooler 9 between condenser 6 and evaporator 11.
Preferably, heat exchangers for district heating group 3 includes the heat exchangers for district heating of several serial or parallel connections, absorber 5,6 and of condenser Heat exchangers for district heating group 3 is arranged using serial or parallel connection mode as needed.
The heat supply steam extraction of step 1, steam turbine 1 is delivered to heat exchangers for district heating group 3, and the driving vapour source of steam turbine 1 is delivered to hair The waste heat vapour source of raw device 2, steam turbine 1 is delivered to condenser 4 and absorber 5, and the driving vapour source of generator 2 is hydrophobic by occurring Enter condenser 4 after device drain cooler 8;
Step 2, the steam that the middle solution of generator 2 releases are delivered in condenser 6, and the concentrated solution in generator 2 is logical Enter absorber 5 after crossing solution heat exchanger 7, the weak solution that absorber 5 exports enters generator 2 after solution heat exchanger 7, dense Solution and weak solution carry out heat exchange in solution heat exchanger 7;
Step 3, heat supply network return water are used for heat supply network after absorber 5, condenser 6 and heat exchangers for district heating group 3 are heated successively It supplies water;
The waste heat vapour source of step 4,1 steam discharge of steam turbine enters absorber 5, becomes weak solution after being absorbed by solution;
Step 5, release steam enters 6 heat release of condenser condensation, steam condensate after the solution in generator 2 is heated Enter condenser 4 after condensed water drain cooler 9.
The working method of the utility model includes the following steps:
The heat supply steam extraction of step 1, steam turbine 1 is delivered to heat exchangers for district heating group 3, and the driving vapour source of steam turbine 1 is delivered to hair The waste heat vapour source of raw device 2, steam turbine 1 is delivered to condenser 4 and evaporator 11, and the driving vapour source of generator 2 is hydrophobic by occurring Enter condenser 4 after device drain cooler 8;
Step 2, the steam that the middle solution of generator 2 releases are delivered to 6 heat release of condenser condensation, and condensed water passes through cool Condenser drain cooler 9 enters evaporator 11 by heating evaporation into vapor, and the concentrated solution in generator 2 passes through solution heat exchanger Enter absorber 5 after 7, the weak solution that absorber 5 exports enters generator 2, concentrated solution and weak solution after solution heat exchanger 7 Heat exchange is carried out in solution heat exchanger 7;
Step 3, heat supply network return water are used for heat supply network after absorber 5, condenser 6 and heat exchangers for district heating group 3 are heated successively It supplies water;
The waste heat vapour source of step 4,1 steam discharge of steam turbine enters hair 11 heat release of device condensation;
Step 5, release steam enters 6 heat release of condenser condensation after the solution in generator 2 is heated.

Claims (7)

1. a kind of CHP Heating System based on absorption heat pump cycle, which is characterized in that including steam turbine (1), steamer A part of heat supply steam extraction of machine (1) is connected to generator (2) as driving vapour source, and another part heat supply steam extraction enters heat supply network heating In device group (3), driving vapour source is cooled to condensed water in generator (2), and condensed water is delivered to condenser (4);As waste heat vapour Steam turbine (1) steam discharge in source is connected to absorber (5), and the solution in absorber (5) becomes weak solution conveying after absorbing vapor To generator (2), the vapor that the solution in generator (2) discharges after being heated is delivered to condenser (6), after discharging vapor Concentrated solution be delivered to absorber (5), steam is delivered to condenser (4) after condensing into water in condenser (6);Heat supply network return water according to It is secondary to supply water for heat supply network after absorber (5), condenser (6) and heat exchangers for district heating group (3) are heated.
2. a kind of CHP Heating System based on absorption heat pump cycle according to claim 1, which is characterized in that The solution heat exchanger (7) for concentrated solution and weak solution heat exchange is provided between the generator (2) and absorber (5).
3. a kind of CHP Heating System based on absorption heat pump cycle according to claim 1, which is characterized in that It is provided with generator drain cooler (8) between the generator (2) and condenser (4);
It is provided with condenser drain cooler (9) between the condenser (4) and condenser (6).
4. a kind of CHP Heating System based on absorption heat pump cycle according to claim 1, which is characterized in that The heat exchangers for district heating group (3) includes the heat exchangers for district heating of several serial or parallel connections, and absorber (5), condenser (6) and heat supply network add Hot device group (3) is arranged using serial or parallel connection mode as needed.
5. a kind of CHP Heating System based on absorption heat pump cycle according to claim 1, which is characterized in that The condenser (6) can be realized using one in heat exchangers for district heating group (3), between condenser (6) and generator (2) between And vapour source switching valve (10) is both provided between condenser (6) and steam turbine (1).
6. a kind of CHP Heating System based on absorption heat pump cycle according to claim 1, which is characterized in that Evaporator (11) is provided between the steam turbine (1) and absorber (5), evaporator (11) is also connected with condenser (4) and condenser (6)。
7. a kind of CHP Heating System based on absorption heat pump cycle according to claim 6, which is characterized in that It is provided with condenser drain cooler (9) between the condenser (6) and evaporator (11).
CN201721808822.8U 2017-12-21 2017-12-21 A kind of CHP Heating System based on absorption heat pump cycle Active CN207776921U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109441577A (en) * 2018-09-30 2019-03-08 国网天津市电力公司电力科学研究院 Absorption heat pump cogeneration units recirculated cooling water tower operation method above freezing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109441577A (en) * 2018-09-30 2019-03-08 国网天津市电力公司电力科学研究院 Absorption heat pump cogeneration units recirculated cooling water tower operation method above freezing

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