CN214949309U - Heating system of negative pressure flash evaporation coupling two-stage compression variable frequency heat pump - Google Patents
Heating system of negative pressure flash evaporation coupling two-stage compression variable frequency heat pump Download PDFInfo
- Publication number
- CN214949309U CN214949309U CN202121254379.0U CN202121254379U CN214949309U CN 214949309 U CN214949309 U CN 214949309U CN 202121254379 U CN202121254379 U CN 202121254379U CN 214949309 U CN214949309 U CN 214949309U
- Authority
- CN
- China
- Prior art keywords
- heat pump
- heat
- stage compression
- tank
- flash evaporation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model provides a heating system of negative pressure flash evaporation coupling two-stage compression variable frequency heat pump, which comprises a two-stage compression variable frequency heat pump for heating circulating water return water of a heat supply network and an industrial wastewater flash evaporation heat absorption unit for providing a heat source for the two-stage compression variable frequency heat pump; utilize industrial waste water flash distillation heat absorption unit to carry out the flash distillation with industrial waste water to as the low temperature heat source of doublestage compression inverter type heat pump, and then heat the heating network circulating water return water, the utility model discloses can solve the extravagant problem of power plant's industrial waste water waste heat, utilize the in-plant generated energy to supply doublestage compression inverter type heat pump to prepare heat heating network circulating water simultaneously, improve heat pump heating performance coefficient, reduce heat pump power consumption, play supplementary peak regulation effect, improved entire system energy utilization ratio, reduce the heating cost during peak regulation, improve the heat supply quality, reach energy saving and emission reduction's purpose.
Description
Technical Field
The utility model belongs to the technical field of the heat supply, especially, relate to a heating system of negative pressure flash distillation coupling doublestage compression inverter heat pump.
Background
With the continuous advance of clean reform of energy structures in China, the installed capacity of wind, light and other clean energy power generation is rapidly increased, but the intermittence and instability of the installed capacity bring great difficulty to peak regulation of a power grid, and meanwhile, the thermal power generating unit has excess capacity and must have higher flexibility and deep peak regulation capability to maintain stable operation of the power grid. On the other hand, the development of the urbanization process and the area of the urban building are increased rapidly, in order to meet the rapidly-increased heat supply demand, a heat source plant is required to improve the heat supply capacity to match the heat load demand, the electric heating efficiency of the traditional electric boiler is less than 1, and the energy-saving performance is not high. And the waste heat contained in the industrial wastewater in the plant is considerable, the direct discharge causes great heat waste, and the water supplement quantity requirement is great.
The technical goals of performing thermoelectric decoupling on a cogeneration unit, improving the peak shaving performance of the cogeneration unit and improving the new energy consumption capacity of the cogeneration unit are to be improved at present.
Disclosure of Invention
An object of the utility model is to provide a heating system of negative pressure flash distillation coupling doublestage compression inverter type heat pump, when having solved current combined heat and power generation unit and carrying out the thermoelectric decoupling zero, its peak regulation performance is poor defect.
In order to achieve the above purpose, the utility model discloses a technical scheme is:
the utility model provides a pair of heating system of negative pressure flash distillation coupling doublestage compression inverter heat pump, including being used for the doublestage compression inverter heat pump to heating network circulating water return water heating to and be used for providing the industrial waste water flash distillation heat absorption unit of heat source to doublestage compression inverter heat pump.
Preferably, the industrial wastewater flash heat absorption unit comprises an industrial wastewater tank and a flash tank, wherein a wastewater side inlet of the flash tank is connected with a wastewater outlet of the industrial wastewater tank, and a wastewater outlet of the flash tank is connected with a wastewater inlet of the industrial wastewater tank.
Preferably, a steam side outlet of the flash tank is connected with a steam inlet of the two-stage compression variable frequency heat pump, and a condensed water outlet of the two-stage compression variable frequency heat pump is connected with a condensed water tank;
and a water side inlet of the two-stage compression variable frequency heat pump is connected with a circulating water return pipeline of a heat supply network, and a water side outlet of the two-stage compression variable frequency heat pump is connected with a circulating water supply pipeline of the heat supply network.
Preferably, a vacuum pump for maintaining the negative pressure in the tank is further arranged on the flash tank.
Preferably, a condensed water outlet arranged on the flash tank is connected with a condensed water tank.
Preferably, an industrial wastewater spray pump is arranged between the industrial wastewater tank and the flash tank.
Preferably, the two-stage compression frequency conversion type heat pump comprises a condenser, an evaporator, a high-pressure stage compressor, a low-pressure stage compressor, an intercooler, a middle branch expansion valve and an evaporation main loop expansion valve, wherein a water side inlet of the condenser is connected with a heat supply network circulating water return pipeline, and a water side outlet of the condenser is connected with a heat supply network circulating water supply pipeline; the working medium outlet of the condenser is divided into two paths, wherein one path is connected with the working medium inlet of the condenser through a middle branch expansion valve, an intercooler and a high-pressure stage compressor in sequence; the other path of the refrigerant passes through an intercooler, an evaporation main loop expansion valve, a low-pressure stage compressor and a high-pressure stage compressor in sequence and is connected with a working medium inlet of a condenser; the steam side inlet of the evaporator is connected with an industrial wastewater flash evaporation heat absorption unit, and the condensed water outlet of the evaporator is connected with a condensed water tank.
Preferably, a heat supply network booster pump is arranged between the heat supply network circulating water return pipeline and the condenser.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a pair of heating system of negative pressure flash distillation coupling doublestage compression inverter heat pump utilizes industrial waste water flash distillation heat absorption unit to carry out the flash distillation with industrial waste water to as the low temperature heat source of doublestage compression inverter heat pump, and then heat the circulating water return water of heat supply network, the utility model discloses can solve the extravagant problem of power plant's industrial waste water waste heat, utilize the in-plant generated energy to supply doublestage compression inverter heat pump to prepare heat heating heat supply network circulating water simultaneously, improve heat pump heating performance coefficient, reduce heat pump power consumption, play supplementary peak regulation effect, improve entire system energy utilization ratio, reduce heating cost during the peak regulation, improve the heating quality, reach energy saving and emission reduction's purpose.
Furthermore, the method for replacing an electric boiler with a heat pump is a better method for reducing standard coal consumption of heat supply and improving economical efficiency of heat supply, and meanwhile, the double-stage compression variable-frequency heat pump is used, so that COP of the heat pump is further improved, the power consumption of the heat pump is reduced, and the running economy of the whole system is improved.
Furthermore, industrial wastewater is used as a low-temperature heat source of the heat pump, waste heat of the industrial wastewater is recovered, and a part of water is recovered at the same time, wherein the part of water has higher quality and can be used as water supplement at a common place where water quality in a plant is required. The whole set of system can improve the peak regulation capacity of the thermoelectric unit and improve the heat supply economy, the energy conservation and the environmental protection.
Drawings
Fig. 1 is a schematic structural diagram of the wind-solar-electric multi-energy complementary distributed heating system of the present invention.
Wherein, 1-a heat supply network booster pump; 2-a condenser; 3-an evaporator; 4-high pressure stage compressor; 5-a low pressure stage compressor; 6-an intercooler; 7-intermediate branch expansion valve; 8-evaporation main circuit expansion valve; 9-a condensate pump; 10-a condensation water tank; 11-a flash tank; 12-an industrial wastewater tank; 13-a vacuum pump; 14-a ball valve; 15-industrial waste water spray pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a pair of heating system of negative pressure flash distillation coupling doublestage compression inverter type heat pump, including doublestage compression inverter type heat pump, flash tank 11, vacuum pump 13, condensate tank 10, condensate pump 9, ball valve 14, industrial waste water jar 12, industrial waste water spray pump 15, heat supply network booster pump 1, wherein, heat supply network booster pump 1 sets up on heat supply network circulating water return pipe, the water inlet of doublestage compression inverter type heat pump is connected to heat supply network circulating water return pipe's delivery port, the delivery port and the female union coupling of power plant's heat supply network heater entry of doublestage compression inverter type heat pump.
The industrial wastewater tank 12 is connected with an industrial wastewater spray pump 15 through a pipeline, the industrial wastewater spray pump 15 is connected with an inner spray layer of the flash tank 11 through a pipeline, the upper part of an inner cavity of the flash tank 11 is a steam side space, and the bottom of the inner cavity of the flash tank 11 is an industrial wastewater side space.
The steam inlet of the double-stage compression variable-frequency heat pump is connected with the steam side of the flash tank 11; and a condensed water outlet of the two-stage compression variable-frequency heat pump is connected with a condensed water pump 9, and an outlet of the condensed water pump 9 is connected with a condensed water tank 10.
A condensed water outlet of the flash tank 11 is connected with a condensed water tank 10 through a ball valve 14; and a waste water outlet of the flash tank 11 is connected with an industrial waste water tank 12.
The flash tank 11 is also provided with a vacuum pump 13 for maintaining the negative pressure in the tank.
The two-stage compression frequency conversion type heat pump comprises a condenser 2, an evaporator 3, a high-pressure stage compressor 4, a low-pressure stage compressor 5, an intercooler 6, a middle branch expansion valve 7 and an evaporation main loop expansion valve 8; the water inlet of the condenser 2 is connected with the water outlet of a circulating water return pipeline of a heat supply network, and the water outlet of the condenser 2 is connected with a main inlet pipe of a heat supply network heater of a power plant.
The working medium outlet of the condenser 2 is divided into two paths, wherein one path sequentially passes through the intercooler 6, the evaporation main loop expansion valve 8, the evaporator 3, the low-pressure stage compressor 5 and the high-pressure stage compressor 4 to enter the condenser 2, and the other path sequentially passes through the intermediate branch expansion valve 7, the intercooler 6 and the high-pressure stage compressor 4 to enter the condenser 2.
The steam side inlet of the evaporator 3 is connected with the steam side outlet of the flash tank 11; the condensed water outlet of the o evaporator 3 is connected with a condensed water tank 10 through a condensed water pump 9.
The utility model discloses can solve the extravagant problem of power plant's industrial waste water waste heat, utilize the in-plant generated energy to supply doublestage compression inverter type heat pump to prepare heat heating network circulating water simultaneously, improve heat pump heating coefficient of performance, reduce the heat pump power consumption, play supplementary peak regulation effect, improve entire system energy utilization, reduce the heating cost during peak regulation, improve the heat supply quality, reach energy saving and emission reduction's purpose.
The utility model discloses a working process:
the industrial wastewater is sprayed by the industrial wastewater spraying pump 15 at the steam side of the flash tank 11, the vacuum pump 13 is used for vacuumizing to maintain the negative pressure in the flash tank 11, the steam saturation temperature is reduced along with the reduction of the pressure in the flash tank, the low-temperature industrial wastewater is subjected to flash evaporation and temperature reduction in the flash tank 11, the heat of the cooled wastewater in the flash tank is carried by latent heat of vaporization in the vaporization process of part of the industrial wastewater to flow out of the flash tank, the part of the steam is used as a low-temperature heat source in the evaporator 3 of the two-stage compression variable-frequency heat pump, the waste heat of the industrial wastewater is extracted while the water quantity is recovered, the water quality of the industrial wastewater can be purified in the flash evaporation process, and the obtained condensed water can be used for supplementing circulating water of an in-plant hot-network or supplementing water of other systems with low water quality requirements.
A refrigerator in the two-stage compression frequency conversion type heat pump is divided into two paths after releasing heat in a condenser 2, wherein one path enters an intercooler 6 to absorb the heat of the other path after passing through an intermediate branch expansion valve 7, the other path is cooled in the intercooler 6 and then is evaporated and absorbed by an evaporator 3 to absorb the heat of a low-temperature heat source, then is compressed by a low-pressure stage compressor 5 and then is mixed with the previous path of working medium to be cooled, and then enters a high-pressure stage compressor 4, and the secondary compression is carried out and then enters the condenser 2 to release heat to a high-temperature heat source.
The heat supply network circulating water enters the condenser to absorb heat for primary heating after being pressurized by the heat supply network booster pump, and then is sent to the heat supply network heater for secondary heating and then is sent to a heat user.
The whole process recovers the waste heat of the industrial wastewater in the plant and simultaneously purifies and purifies partial industrial wastewater, the condensed water can be used as system water supplement with low water quality requirement, the water supplement amount of partial systems in the plant is reduced, the unit operates in the heating period to ensure the heat load, the electric power of the outlet of the generator is reduced, and the peak regulation space of the cogeneration unit is enlarged.
Borrow by above-mentioned scheme, through retrieving the doublestage heating system of industrial waste water waste heat based on negative pressure flash distillation principle, have following technological effect:
the two-stage compression variable-frequency heat pump and the flash tank are combined to heat for heating circulating water return of a heat supply network, so that the peak regulation flexibility of a power plant in the heating period can be improved while the low-temperature waste heat of industrial wastewater is recovered, the heating performance coefficient of the heat pump is improved, the power consumption of the heat pump is reduced, an auxiliary peak regulation effect is achieved, the energy utilization rate of the whole system is improved, the heating cost in the peak regulation period is reduced, the heating quality is improved, and the purposes of energy conservation and emission reduction are achieved.
1) The two-stage compression variable-frequency heat pump and the flash tank are combined for heating, low-grade heat energy in the industrial wastewater is utilized, irreversible loss caused by limited temperature difference heat transfer of a heat supply network heater is reduced in the step heating process, and meanwhile, deep recovery of waste heat of the industrial wastewater is realized.
2) The whole system recovers the waste heat and purifies a part of industrial wastewater, the extracted condensed water can be used as industrial water supplement or heat supply network circulating water supplement and other systems with general water supplement quality requirements, and the water cost in the plant is reduced.
3) The method has the advantages of improving the peak regulation flexibility of the power plant in the heating period, improving the heating performance coefficient of the heat pump, reducing the power consumption of the heat pump, playing a role in assisting the peak regulation, improving the energy utilization rate of the whole system, reducing the heating cost in the peak regulation period, improving the heating quality, reducing the pollutant emission and achieving the purposes of energy conservation and emission reduction.
Claims (8)
1. The heating system is characterized by comprising a two-stage compression variable-frequency heat pump for heating circulating water return water of a heat supply network and an industrial wastewater flash evaporation heat absorption unit for providing a heat source for the two-stage compression variable-frequency heat pump.
2. The heating system of the negative pressure flash evaporation coupled two-stage compression variable frequency heat pump according to claim 1, wherein the industrial wastewater flash evaporation heat absorption unit comprises an industrial wastewater tank (12) and a flash evaporation tank (11), wherein a wastewater side inlet of the flash evaporation tank (11) is connected with a wastewater outlet of the industrial wastewater tank (12), and a wastewater outlet of the flash evaporation tank (11) is connected with a wastewater inlet of the industrial wastewater tank (12).
3. The heating system of the negative-pressure flash evaporation coupled two-stage compression frequency conversion heat pump according to claim 2, wherein a steam side outlet of the flash evaporation tank (11) is connected with a steam inlet of the two-stage compression frequency conversion heat pump, and a condensed water outlet of the two-stage compression frequency conversion heat pump is connected with a condensed water tank (10);
and a water side inlet of the two-stage compression variable frequency heat pump is connected with a circulating water return pipeline of a heat supply network, and a water side outlet of the two-stage compression variable frequency heat pump is connected with a circulating water supply pipeline of the heat supply network.
4. The heating system of the negative pressure flash evaporation coupled two-stage compression variable frequency heat pump according to claim 2, wherein a vacuum pump (13) for maintaining the negative pressure in the tank is further arranged on the flash evaporation tank (11).
5. The heating system of the negative-pressure flash evaporation coupled two-stage compression frequency conversion type heat pump according to claim 2, wherein a condensed water outlet formed on the flash tank (11) is connected with the condensed water tank (10).
6. The heating system of the negative pressure flash evaporation coupling two-stage compression frequency conversion type heat pump according to claim 2, wherein an industrial wastewater spray pump (15) is arranged between the industrial wastewater tank (12) and the flash tank (11).
7. The heating system of the negative-pressure flash evaporation coupled two-stage compression frequency conversion heat pump according to claim 1, wherein the two-stage compression frequency conversion heat pump comprises a condenser (2), an evaporator (3), a high-pressure stage compressor (4), a low-pressure stage compressor (5), an intercooler (6), an intermediate branch expansion valve (7) and an evaporation main loop expansion valve (8), wherein a water-side inlet of the condenser (2) is connected with a heat supply network circulating water return pipeline, and a water-side outlet of the condenser (2) is connected with a heat supply network circulating water supply pipeline; the working medium outlet of the condenser (2) is divided into two paths, wherein one path is connected with the working medium inlet of the condenser (2) through an intermediate branch expansion valve (7), an intermediate cooler (6) and a high-pressure stage compressor (4) in sequence; the other path is connected with a working medium inlet of the condenser (2) through an intercooler (6), an evaporation main loop expansion valve (8), a low-pressure stage compressor (5) and a high-pressure stage compressor (4) in sequence; the steam side inlet of the evaporator (3) is connected with an industrial wastewater flash evaporation heat absorption unit, and the condensed water outlet of the evaporator (3) is connected with a condensed water tank (10).
8. The heating system of the negative pressure flash evaporation coupled two-stage compression variable frequency heat pump according to claim 7, wherein a heat supply network booster pump (1) is arranged between the heat supply network circulating water return pipeline and the condenser (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121254379.0U CN214949309U (en) | 2021-06-04 | 2021-06-04 | Heating system of negative pressure flash evaporation coupling two-stage compression variable frequency heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121254379.0U CN214949309U (en) | 2021-06-04 | 2021-06-04 | Heating system of negative pressure flash evaporation coupling two-stage compression variable frequency heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214949309U true CN214949309U (en) | 2021-11-30 |
Family
ID=79054481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121254379.0U Expired - Fee Related CN214949309U (en) | 2021-06-04 | 2021-06-04 | Heating system of negative pressure flash evaporation coupling two-stage compression variable frequency heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214949309U (en) |
-
2021
- 2021-06-04 CN CN202121254379.0U patent/CN214949309U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113834114A (en) | Heating system and method of negative-pressure flash evaporation coupling two-stage compression variable-frequency heat pump | |
| CN113566260B (en) | Combined heat pump heating system and method | |
| CN111365131B (en) | Power-cooling combined supply system driven by exhaust smoke waste heat of gas turbine and method thereof | |
| CN112197325A (en) | Thermoelectric peak regulation integrated system for promoting renewable energy consumption and waste heat recovery | |
| CN111271898B (en) | Combined cooling heating and power system based on geothermal energy and working method thereof | |
| CN110542239A (en) | Single-double effect composite evaporation-absorption two-section direct combustion type first-class lithium bromide absorption heat pump unit | |
| CN103090582A (en) | Supercharged three-phase absorbing type energy storage device | |
| CN110259537B (en) | Carbon dioxide Rankine cycle power system and operation method thereof | |
| CN115111806B (en) | Combined heat and power system and method based on energy cascade utilization | |
| CN214949309U (en) | Heating system of negative pressure flash evaporation coupling two-stage compression variable frequency heat pump | |
| CN201531280U (en) | Auxiliary heating power station condensing steam turbine exhaust steam cooling device | |
| CN216521584U (en) | Multi-heat-source thermotechnical hybrid compression steam generation system | |
| CN215002381U (en) | High-efficient absorption heat pump | |
| CN214249744U (en) | Waste heat recovery heating system | |
| CN209840233U (en) | Air cooling high back pressure unit utilizes low level can heat supply refrigeration combined system | |
| CN113357692A (en) | Circulating water waste heat recovery system of thermal power plant | |
| CN108397931B (en) | Environment-friendly, efficient and energy-saving direct-fired lithium bromide absorption type cold and hot water unit | |
| CN113091349A (en) | High-efficient absorption heat pump | |
| CN214891456U (en) | Double-stage heating system for recovering waste heat of industrial wastewater based on negative pressure flash evaporation principle | |
| CN110986425A (en) | Take vapor heat pump system of solar energy concurrent heating | |
| CN115095897B (en) | Gas turbine combined flash evaporation type heat pump distributed combined cooling heating power system | |
| CN220018284U (en) | Compressed air energy storage waste heat recovery heat storage utilization system | |
| CN221122572U (en) | System for producing steam and cold water by using waste heat of second-class heat pump | |
| CN218894688U (en) | Full waste heat heating system for condensation heat recycling of direct air cooling unit of power plant | |
| CN221483904U (en) | System for producing steam by using waste heat of second-class heat pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211130 |