CN203489341U - Superlarge temperature difference heat supply network waste heat heating system combined with low-vacuum injection type heat pump - Google Patents
Superlarge temperature difference heat supply network waste heat heating system combined with low-vacuum injection type heat pump Download PDFInfo
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- CN203489341U CN203489341U CN201320570436.5U CN201320570436U CN203489341U CN 203489341 U CN203489341 U CN 203489341U CN 201320570436 U CN201320570436 U CN 201320570436U CN 203489341 U CN203489341 U CN 203489341U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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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
- 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
The utility model relates to a superlarge temperature difference heat supply network waste heat heating system combined with a low-vacuum injection type heat pump and belongs to the field of waste heat recovery type combined heat and power generation based on low-vacuum circulation water heating and injection type heat pump heat exchange. The superlarge temperature difference heat supply network waste heat heating system is characterized in that an injection type heat pump waste heat recovery device, a dead steam direct recovery device used as a heat supply network water-based heat carrying source, a peak shaving heater and a heat supply network superlarge temperature difference heat exchange unit, pipelines and pipe fittings are included, a cold side inlet of the dead steam direct recovery device is connected with a heating supply network return water pipe, an outlet is connected with a water inlet of an injection type heat pump condenser heat supply network, dead steam is fed into the peak shaving heater, is heated until reaching needed temperature, and then is discharged. The dead steam enters the dead steam direct recovery device and an injection opening of an injection section of the injection type heat pump. When used for thermal power plants, the superlarge temperature difference heat supply network waste heat heating system is higher in efficiency than a conventional mode according to which waste heat is extracted from cooling water, can be improved in dead steam utilization amount by 1-2 times, and is only a fraction of an absorbing heat pump in investment.
Description
Technical field
The utility model belongs to the cogeneration of heat and power field based on waste heat recovery, and the exhaust steam straight that particularly a kind of low vacuum waste heat recovery heat supply combines with steam power plant HEAT PUMP BASED ON EJECTING PRINCIPLE waste heat recovery heat supply takes back receiving method and heating system forms.
Background technology
The Major Systems form of the northern area of China heating is at present: cogeneration of heat and power, district boiler room and dispersion heating respectively account for approximately 1/3, wherein primary energy utilization ratio is the highest, emission reduction effect is best, economy applying of the most rational cogeneration of heat and power be subject to the restriction that fuel price improves, is difficult to expand on a large scale the factors such as heat supply network scale and heat capacity thereof day by day, need badly and take better technology path and policy planning to be promoted.Exhaust steam residual heat reclaims and the Patents technology of super large temperature difference heat supply for carrying out based on injection type heat exchange of creatively being developed by Tsing-Hua University's building energy conservation research center, can realize in steam power plant adopts HEAT PUMP BASED ON EJECTING PRINCIPLE to reclaim exhaust steam in steam turbine waste heat for central heating, Jiang Keshi steam power plant efficiency of energy utilization improves 20～30%, and significantly expands its heat capacity.This technology has been applied to engineering practice and has obtained good effects of energy saving and emission reduction and economic benefit.The major defect of which be HEAT PUMP BASED ON EJECTING PRINCIPLE system price high, take up an area large, because its temperature is low, affect energy saving, investment payback time while reclaiming recirculated water and grows etc.
The more general turbine exhaust heat heat-supplying mode of another kind of application is so-called low vacuum circulating water heating, exhaust steam in steam turbine condenser to standard configuration is transformed, so that it can adopt heat supply network backwater to carry out cooling heat transferring, and after being heated to required supply water temperature, heat supply network backwater is sent to space-heating installation.Which advantage is that transformation is simple, oepration at full load efficiency is high, invests little, good economy performance, but exist, supply water temperature is lower, supply backwater temperature difference is less, heat supply running regulates the shortcomings such as dumb, and easily making exhaust stage blade damage speed accelerates, therefore the Steam Turbine that is more suitable for capacity and is below 100,000 kW is transformed, and for the more large-scale heat supply unit of 20～300,000 kW, rarely has modifier.
HEAT PUMP BASED ON EJECTING PRINCIPLE is as a kind of Novel heat pump pattern, and due to its intrinsic low injection ratio characteristic, energy-saving effect is poor and be difficult at practical.
How the advantage of above-mentioned multiple waste heat recovery mode being combined, realize and farthest utilize exhaust steam residual heat heat supply, be convenient to regulate heat supply running, energy-saving and emission-reduction benefit and investment return effect better again, is the emphasis direction of next step this field development.
Utility model content
The purpose of this utility model is to solve the technology existing in existing exhaust steam in steam turbine waste heat recovery heat-supplying mode, economic deficiency, propose the compound super large temperature difference heat supply network waste heat for supplying system of low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE, realize more high efficiency and recovery exhaust steam residual heat by a larger margin for heat supply and reduce steam power plant's heat consumption rate that generates electricity.
Specific descriptions of the present utility model are: the super large temperature difference heat supply network waste heat for supplying system that low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE is compound, it is characterized in that system comprises HEAT PUMP BASED ON EJECTING PRINCIPLE 8 waste-heat recovery devices, exhaust steam oxygen gas direct-recycling device 3 as hot net water base load thermal source, peak regulation heater 9 and heat supply network super large temperature difference heat exchange unit and pipeline pipe fitting form, wherein the cold side import of exhaust steam oxygen gas direct-recycling device 3 is exported and is connected with the water out that supplies of cooling tower 5 by circulating cooling water pipe by the heat supply network backwater of heat supply network return pipe and heat supply network heat exchange unit 7, the cold side outlet of exhaust steam oxygen gas direct-recycling device 3 is connected with the condenser 81 hot net water imports of HEAT PUMP BASED ON EJECTING PRINCIPLE 8, the condenser 81 hot net water outlets of HEAT PUMP BASED ON EJECTING PRINCIPLE 8 are connected with the hot net water import of peak regulation heater 9, the hot net water outlet of peak regulation heater 9 is connected for water inlet with the heat supply network of heat supply network heat exchange unit 7 by heat supply network feed pipe, the exhaust steam that steam turbine 1 is discharged is connected with injection section 82 ejecting ports of HEAT PUMP BASED ON EJECTING PRINCIPLE 8 with the throat's exhaust steam outlet by steam turbine 1 with exhaust steam oxygen gas direct-recycling device 3 respectively, the condensate water of condenser 81 heat source side of exhaust steam oxygen gas direct-recycling device 3 and HEAT PUMP BASED ON EJECTING PRINCIPLE 8 after condensing heat-exchange is connected with the import of condensate pump 2 respectively, the high temperature heat source side-entrance of the nozzle inlet of HEAT PUMP BASED ON EJECTING PRINCIPLE 8 and peak regulation heater 9 is connected with the extraction opening of steam turbine 1 respectively, the heating water outlet of heat supply network heat exchange unit 7 is for past hot user.
HEAT PUMP BASED ON EJECTING PRINCIPLE 8 waste-heat recovery devices adopt multiple-effect superposition type injection heat exchange structure.
HEAT PUMP BASED ON EJECTING PRINCIPLE 8 waste-heat recovery devices adopt single-stage injection heat exchange structure.
Exhaust steam oxygen gas direct-recycling device 3 is the supporting condenser of turbine generating system standard, and this condenser internal structure is through being adapted as low vacuum circulating water heating structure.
Exhaust steam oxygen gas direct-recycling device 3 is for being independent of the supporting condenser of turbine generating system standard the special-purpose exhaust steam recovery heat exchanger structure in parallel with its condenser.
Throat's exhaust steam outlet of steam turbine 1 adopts the structure of special-shaped exhaust steam outlet, comprise the perforate of one or more than one circle, square or irregular type, when outlet is more than one, its fairlead is connected with the evaporimeter heat source side import of HEAT PUMP BASED ON EJECTING PRINCIPLE 8 after being aggregated into circular exhaust steam and drawing house steward.
Heat supply network heat exchange unit 7 adopts absorption heat pump heat exchange structure.
Technical characterstic of the present utility model and beneficial effect: the utility model is intended to the technology existing in existing exhaust steam in steam turbine waste heat recovery heat-supplying mode for solving, economic deficiency, employing is carried out exhaust steam residual heat recovery and super large temperature difference heat supply technology and low vacuum circulating water heating technology based on injection type heat exchange and is combined, can guarantee the safe and reliable work of condenser and steam turbine last stage and even last three grade blades, can utilize again exhaust steam in steam turbine directly to heat heat supply network backwater, then segmentation is heated by HEAT PUMP BASED ON EJECTING PRINCIPLE waste heat recovery, the heating of peak regulation heater, meet high temperature water requirements, can realize higher waste heat recovery amount and organic efficiency, its exhaust steam utilization and economic benefit can improve more than 1～2 times, and investment only reaches the part of absorption heat pump, farthest improve thus the comprehensive utilization of energy benefit of heat consumption rate and the whole thermal power cogeneration central heating system of steam power plant, there is engineering practical value.
Accompanying drawing explanation
Fig. 1 is the compound super large temperature difference heat supply network waste heat for supplying system architecture schematic diagram of low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE of the present utility model.
In Fig. 1, each unit number and title are as follows.
The specific embodiment
The compound super large temperature difference heat supply network waste heat for supplying system of low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE of the present utility model by reference to the accompanying drawings and embodiment be described in detail as follows.
Specific embodiment of the utility model structure, as shown in Figure 1, the specific embodiment and the function declaration of native system are as follows: the super large temperature difference heat supply network waste heat for supplying system that low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE is compound, system comprises HEAT PUMP BASED ON EJECTING PRINCIPLE 8 waste-heat recovery devices, exhaust steam oxygen gas direct-recycling device 3 as hot net water base load thermal source, peak regulation heater 9 and heat supply network super large temperature difference heat exchange unit and pipeline pipe fitting form, wherein the cold side import of exhaust steam oxygen gas direct-recycling device 3 is exported and is connected with the water out that supplies of cooling tower 5 by circulating cooling water pipe by the heat supply network backwater of heat supply network return pipe and heat supply network heat exchange unit 7, the cold side outlet of exhaust steam oxygen gas direct-recycling device 3 is connected with the condenser 81 hot net water imports of HEAT PUMP BASED ON EJECTING PRINCIPLE 8, the condenser 81 hot net water outlets of HEAT PUMP BASED ON EJECTING PRINCIPLE 8 are connected with the hot net water import of peak regulation heater 9, the hot net water outlet of peak regulation heater 9 is connected for water inlet with the heat supply network of heat supply network heat exchange unit 7 by heat supply network feed pipe, the exhaust steam that steam turbine 1 is discharged is connected with injection section 82 ejecting ports of HEAT PUMP BASED ON EJECTING PRINCIPLE 8 with the throat's exhaust steam outlet by steam turbine 1 with exhaust steam oxygen gas direct-recycling device 3 respectively, the condensate water of condenser 81 heat source side of exhaust steam oxygen gas direct-recycling device 3 and HEAT PUMP BASED ON EJECTING PRINCIPLE 8 after condensing heat-exchange is connected with the import of condensate pump 2 respectively, the high temperature heat source side-entrance of the nozzle inlet of HEAT PUMP BASED ON EJECTING PRINCIPLE 8 and peak regulation heater 9 is connected with the extraction opening of steam turbine 1 respectively, the heating water outlet of heat supply network heat exchange unit 7 is for past hot user.
HEAT PUMP BASED ON EJECTING PRINCIPLE 8 waste-heat recovery devices adopt single-stage injection heat exchange structure.
Exhaust steam oxygen gas direct-recycling device 3 is the supporting condenser of turbine generating system standard, and this condenser internal structure is through being adapted as low vacuum circulating water heating structure.
Throat's exhaust steam outlet of steam turbine 1 adopts the structure of special-shaped exhaust steam outlet, comprise the perforate of one or more than one circle, square or irregular type, when outlet is more than one, its fairlead is connected with the evaporimeter heat source side import of HEAT PUMP BASED ON EJECTING PRINCIPLE 8 after being aggregated into circular exhaust steam and drawing house steward.
Heat supply network heat exchange unit 7 adopts absorption heat pump heat exchange structure.
It should be noted that, the present invention proposes reclaim how more efficiently exhaust steam in steam turbine waste heat method, and can have different concrete implementing measures and the concrete device for carrying out said of different structure according to this overall solution, the above-mentioned specific embodiment is only wherein a kind of.Other is similarly the protection domain that enforceable mode all falls into this patent through simple deformation.
Claims (7)
1. the super large temperature difference heat supply network waste heat for supplying system that low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE is compound, it is characterized in that system comprises HEAT PUMP BASED ON EJECTING PRINCIPLE (8) waste-heat recovery device, exhaust steam oxygen gas direct-recycling device (3) as hot net water base load thermal source, peak regulation heater (9) and heat supply network super large temperature difference heat exchange unit and pipeline pipe fitting form, wherein the cold side import of exhaust steam oxygen gas direct-recycling device (3) is exported and is connected with the water out that supplies of cooling tower (5) by circulating cooling water pipe by the heat supply network backwater of heat supply network return pipe and heat supply network heat exchange unit (7), the cold side outlet of exhaust steam oxygen gas direct-recycling device (3) is connected with condenser (81) the hot net water import of HEAT PUMP BASED ON EJECTING PRINCIPLE (8), condenser (81) the hot net water outlet of HEAT PUMP BASED ON EJECTING PRINCIPLE (8) is connected with the hot net water import of peak regulation heater (9), the hot net water outlet of peak regulation heater (9) is connected for water inlet with the heat supply network of heat supply network heat exchange unit (7) by heat supply network feed pipe, the exhaust steam that steam turbine (1) is discharged is connected with injection section (82) ejecting port of HEAT PUMP BASED ON EJECTING PRINCIPLE (8) with the throat's exhaust steam outlet by steam turbine (1) with exhaust steam oxygen gas direct-recycling device (3) respectively, the condensate water of condenser (81) heat source side after condensing heat-exchange of exhaust steam oxygen gas direct-recycling device (3) and HEAT PUMP BASED ON EJECTING PRINCIPLE (8) is connected with the import of condensate pump (2) respectively, the high temperature heat source side-entrance of the nozzle inlet of HEAT PUMP BASED ON EJECTING PRINCIPLE (8) and peak regulation heater (9) is connected with the extraction opening of steam turbine (1) respectively, the heating water outlet of heat supply network heat exchange unit (7) is for past hot user.
2. the compound super large temperature difference heat supply network waste heat for supplying system of low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE as claimed in claim 1, is characterized in that, described HEAT PUMP BASED ON EJECTING PRINCIPLE (8) waste-heat recovery device adopts multiple-effect superposition type injection heat exchange structure.
3. the compound super large temperature difference heat supply network waste heat for supplying system of low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE as claimed in claim 1, is characterized in that, described HEAT PUMP BASED ON EJECTING PRINCIPLE (8) waste-heat recovery device adopts single-stage injection heat exchange structure.
4. the compound super large temperature difference heat supply network waste heat for supplying system of low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE as claimed in claim 1, it is characterized in that, described exhaust steam oxygen gas direct-recycling device (3) is the supporting condenser of turbine generating system standard, and this condenser internal structure is through being adapted as low vacuum circulating water heating structure.
5. the compound super large temperature difference heat supply network waste heat for supplying system of low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE as claimed in claim 1, it is characterized in that, described exhaust steam oxygen gas direct-recycling device (3) is for being independent of the supporting condenser of turbine generating system standard the special-purpose exhaust steam recovery heat exchanger structure in parallel with its condenser.
6. the compound super large temperature difference heat supply network waste heat for supplying system of low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE as claimed in claim 1, it is characterized in that, throat's exhaust steam outlet of described steam turbine (1) adopts the structure of special-shaped exhaust steam outlet, comprise one or more than one circular or square perforate, when outlet is more than one, its fairlead is connected with the evaporimeter heat source side import of HEAT PUMP BASED ON EJECTING PRINCIPLE (8) after being aggregated into circular exhaust steam and drawing house steward.
7. the compound super large temperature difference heat supply network waste heat for supplying system of low vacuum HEAT PUMP BASED ON EJECTING PRINCIPLE as claimed in claim 1, is characterized in that, described heat supply network heat exchange unit (7) adopts absorption heat pump heat exchange structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320570436.5U CN203489341U (en) | 2013-09-15 | 2013-09-15 | Superlarge temperature difference heat supply network waste heat heating system combined with low-vacuum injection type heat pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320570436.5U CN203489341U (en) | 2013-09-15 | 2013-09-15 | Superlarge temperature difference heat supply network waste heat heating system combined with low-vacuum injection type heat pump |
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| CN203489341U true CN203489341U (en) | 2014-03-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453567A (en) * | 2013-09-15 | 2013-12-18 | 张茂勇 | Low vacuum ejector heat pump composite waste-heat heating supply system based on huge temperature-difference heat supply network |
| CN107524483A (en) * | 2017-06-05 | 2017-12-29 | 联合瑞升（北京）科技有限公司 | A kind of exhaust steam in steam turbine deriving structure and method |
| CN110926049A (en) * | 2019-12-05 | 2020-03-27 | 陕西鼓风机（集团）有限公司 | Cogeneration low-temperature heating process and system |
-
2013
- 2013-09-15 CN CN201320570436.5U patent/CN203489341U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453567A (en) * | 2013-09-15 | 2013-12-18 | 张茂勇 | Low vacuum ejector heat pump composite waste-heat heating supply system based on huge temperature-difference heat supply network |
| CN107524483A (en) * | 2017-06-05 | 2017-12-29 | 联合瑞升（北京）科技有限公司 | A kind of exhaust steam in steam turbine deriving structure and method |
| CN110926049A (en) * | 2019-12-05 | 2020-03-27 | 陕西鼓风机（集团）有限公司 | Cogeneration low-temperature heating process and system |
| CN110926049B (en) * | 2019-12-05 | 2023-11-21 | 陕西鼓风机（集团）有限公司 | Cogeneration low-temperature heating process and system |
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