CN218237604U - Photoelectric complementary multistage heating flash type compression heat pump heat supply system - Google Patents
Photoelectric complementary multistage heating flash type compression heat pump heat supply system Download PDFInfo
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- CN218237604U CN218237604U CN202123085164.3U CN202123085164U CN218237604U CN 218237604 U CN218237604 U CN 218237604U CN 202123085164 U CN202123085164 U CN 202123085164U CN 218237604 U CN218237604 U CN 218237604U
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
Abstract
The utility model discloses a complementary multistage heating flash evaporation type compression heat pump heating system of photoelectricity, including heat supply network circulating water pipe, set up heat supply network circulating water pump on the heat supply network circulating water pipe, heat supply network circulating water pipe heating section has solar energy collection system, air source heat pump system, negative pressure flash evaporation type sewage source heat pump system and heat storage tank according to return water flow direction intercommunication in proper order, the utility model discloses utilize solar collector, compression heat pump, flash tank, heat storage tank to unite, utilize the low-grade heat energy in air and the domestic sewage, realized the degree of depth of the usable waste heat of user side and retrieved, heat supply network circulating water return water is heated with the mode of step heating, reduces the working temperature difference of heat pump at different levels, improves heat pump COP, reduces heat pump power consumption, disposes solar collector simultaneously and replaces the heat pump of different heating sections under different illumination intensity, disposes the heat storage tank and utilizes peak valley price to further reduce heating cost.
Description
Technical Field
The utility model belongs to the technical field of heating equipment, concretely relates to complementary multistage heating flash distillation type compression heat pump heating system of photoelectricity.
Background
In the northern area of China, heating in the severe cold period mainly depends on fossil energy such as coal, natural gas and the like, and the resources can generate a large amount of pollutants and greenhouse gases in the mining and using processes. The establishment of an energy-saving, efficient, low-carbon and environment-friendly heat supply technical route as a substitute or supplement for a traditional centralized heat supply system is an important problem to be solved urgently at present.
The domestic sewage serving as the original urban waste heat has the advantages of convenience in collection, high low-grade heat energy content, relatively stable water quantity and temperature, convenience in utilization and the like, and has huge energy-saving potential as a low-grade heat source for urban clean heat supply. The compression type heat pump is mainly divided into an air source, a sewage source, a water source heat pump and the like according to the inverse Carnot cycle principle, low-grade heat energy is extracted by utilizing electric energy to generate high-grade heat energy, the compression type heat pump has the advantages of stable transmission energy, high heat exchange efficiency, energy conservation and environmental protection, and air energy and sewage energy can be changed into available resources. However, the air source heat pump is affected by the low outdoor environment temperature in the severe cold area, the problems of evaporator frosting and the like are easily caused, and the heating performance coefficient of the heat pump can be reduced due to the large temperature difference of the high-temperature heat source and the low-temperature heat source; the waste heat of sewage is limited by the flow of domestic sewage in living areas, and the amount of the extracted waste heat is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a complementary multistage heating flash distillation type compression heat pump heating system of photoelectricity utilizes solar energy, air energy and sewage energy to carry out cascaded heating to the heating return water.
The utility model adopts the technical scheme that the photoelectric complementary multistage heating flash type compression heat pump heat supply system comprises a heat supply network circulating water pipe, a heat supply network circulating water pump is arranged on the heat supply network circulating water pipe, and the heat supply network circulating water pipe is sequentially communicated with a solar heat collection system, an air source heat pump system, a negative pressure flash type sewage source heat pump system and a heat storage tank according to the return water flow direction;
the solar heat collection system comprises a shell-and-tube heat exchanger, wherein a water inlet of the shell-and-tube heat exchanger and a communication position of a heat supply network circulating water pipe are positioned at the front end of a communication position of an air source heat pump system and the heat supply network circulating water pipe, and a water outlet of the shell-and-tube heat exchanger and a communication position of the heat supply network circulating water pipe are respectively positioned between the communication positions of the air source heat pump system and the negative pressure flash evaporation type sewage source heat pump system and the heat supply network circulating water pipe and at the rear end of the communication position of the negative pressure flash evaporation type sewage source heat pump system and the heat supply network circulating water pipe.
The utility model is also characterized in that,
the heat supply network circulating water pipe is communicated with a water inlet and a water outlet of the heat storage tank through pipelines respectively, a stop valve and an electric control valve d are sequentially arranged on the pipeline for communicating the heat supply network circulating water pipe with the water inlet of the heat storage tank, and the pipeline for communicating the heat supply network circulating water pipe with the water outlet of the heat storage tank is provided with the stop valve; a stop valve is arranged between two nodes of the heat storage tank and the heat supply network circulating water pipe.
The solar heat collection system comprises a groove type solar heat collector which is communicated with a hot oil circulating pump through a pipeline, and the hot oil circulating pump is communicated with the shell-and-tube heat exchanger through a pipeline.
The air source heat pump system comprises a condenser a, the condenser a comprises a compressor a and an evaporator a which are sequentially communicated through a pipeline to form a closed loop, and an expansion valve a is arranged on a pipeline for communicating the evaporator a with the condenser a;
condenser a water inlet and delivery port pass through the pipeline and connect in parallel to heat supply network circulating water pipe, have set gradually stop valve and electrical control valve an on condenser a water inlet and the heat supply network circulating water pipe intercommunication pipeline, are provided with the stop valve on condenser a delivery port and the heat supply network circulating water pipe intercommunication pipeline, are provided with the stop valve between condenser a and the two nodes of heat supply network circulating water pipe intercommunication.
The pressure flash evaporation type sewage source heat pump system comprises a condenser b, wherein the condenser b comprises a compressor b and an evaporator b which are sequentially communicated through a pipeline to form a closed loop, and an expansion valve b is arranged on the pipeline communicating the evaporator b and the condenser b;
the water inlet and the water outlet of the condenser b are connected in parallel to a heat supply network circulating water pipe through pipelines, a stop valve and an electric control valve b are sequentially arranged on the water inlet of the condenser b and a heat supply network circulating water pipe communicating pipeline, the stop valve is arranged on the water outlet of the condenser b and the heat supply network circulating water pipe communicating pipeline, and the stop valve is arranged between two nodes of the condenser b and the heat supply network circulating water pipe communicating pipeline.
An inlet of the evaporator b is communicated with a flash tank through a pipeline, a vacuum pump is arranged on one side wall of the flash tank, a spray nozzle is arranged in the flash tank close to the top wall and communicated to a user sewage source through a pipeline, a sewage spray pump is arranged on the pipeline communicating the spray nozzle with the user sewage source, a water storage tank is arranged below the spray nozzle and communicated with a sewage return pump through a pipeline,
the outlet of the evaporator b is communicated with a condensate pump through a pipeline, the condensate pump is communicated with a condensate tank and a flash tank through a pipeline, a stop valve is arranged on a communicating pipeline of the condensate pump and the condensate tank, and the stop valve is arranged on a communicating pipeline of the condensate pump and the flash tank.
The utility model has the advantages that,
(1) The utility model discloses utilize solar collector, compression heat pump, flash tank, heat storage tank to unite, utilize the low-grade heat energy in air and the domestic sewage, realized the degree of depth recovery of the usable waste heat of user side.
(2) The negative pressure flash evaporation type sewage source heat pump system establishes a negative pressure flash evaporation tank to generate flash evaporation steam to be used as a sewage source heat pump low-temperature heat source, solves the problem of blockage of a sewage source heat pump low-temperature heat exchanger, is similar to the process of distilling domestic sewage, and can use the generated condensed water as heat supply network circulating water for water supplement or part of domestic water which is not drinking water, so that the water consumption of the system is reduced.
(3) The utility model discloses heating heat supply network circulating water return water with the mode of step heating, reducing the working temperature difference of heat pumps at different levels, improving heat pump COP, reducing the heat pump power consumption, configuration solar collector replaces the heat pump of different heating sections under different illumination intensity simultaneously, and the configuration heat storage jar utilizes the peak valley price to further reduce the heating cost.
Drawings
Fig. 1 is a schematic structural diagram of a photoelectric complementary multistage heating flash evaporation type compression heat pump heating system of the present invention.
In the figure, 1, a groove type solar heat collector, 2, a heat collecting oil circulating pump, 3, a shell-and-tube heat exchanger, 4, a condenser a,5, a compressor a,6, an evaporator a,7, an expansion valve a,8, a sewage spraying pump, 9, a sewage return pump, 10, a flash tank, 11, a spraying nozzle, 12, a vacuum pump, 13, a condensed water tank, 14, a condensed water pump, 15, a heat storage tank, 16, electric regulating valves c and 17, electric regulating valves a and 18, a heat supply network circulating water pump, 19, a condenser b,20, a compressor b,21, an evaporator b and 22, an expansion valve b and 23, an electric regulating valve b and 24, an electric regulating valve d and 25 and a heat supply network circulating water pipe are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses complemental multistage heating flash distillation type compression heat pump heating system's of photoelectricity structure is as shown in figure 1, including heat supply network circulating water pipe 25, set up heat supply network circulating water pump 18 on the heat supply network circulating water pipe 25, set gradually solar energy collection system, air source heat pump system, negative pressure flash distillation type sewage source heat pump system and heat storage tank 15 according to the return water direction on the heat supply network circulating water pipe 25.
The solar heat collection system comprises a groove type solar heat collector 1, the groove type solar heat collector 1 is communicated with a shell-and-tube heat exchanger 3 through a pipeline, a heat collection oil circulating pump 2 is arranged on the pipeline communicated with the shell-and-tube heat exchanger 1, a water inlet of the shell-and-tube heat exchanger 3 is communicated with a heat supply network circulating water pipe 25 at the front end of an air source heat pump system through a pipeline, a stop valve and an electric control valve c16 are sequentially arranged on the pipeline communicated with the water inlet of the heat supply network circulating water pipe 25 and the shell-and-tube heat exchanger 3, a water outlet pipeline of the shell-and-tube heat exchanger 3 is divided into two paths, one path is communicated with the heat supply network circulating water pipe 25 between the air source heat pump system and the negative pressure flash type sewage source heat pump system, the other path is communicated with the heat supply network circulating water pipe 25 at the rear end of the negative pressure flash type sewage source heat pump system, and the two paths are communicated with the pipeline to form a stop valve.
The air source heat pump system comprises a condenser a4, a compressor a5 and an evaporator a6 which are sequentially communicated to form a closed loop, an expansion valve a7 is arranged on a communication pipeline between the evaporator a6 and the condenser a4, the condenser a4 is connected to a heat supply network circulating water pipe 25 in parallel, a stop valve is arranged between two parallel nodes of the condenser a4 and the heat supply network circulating water pipe 25, the stop valve and an electric control valve a17 are sequentially arranged on a communication pipeline between the heat supply network circulating water pipe 25 and a water inlet of the condenser a4, and a stop valve is arranged on a communication pipeline between a water outlet of the condenser a4 and the heat supply network circulating water pipe 25.
The pressure flash evaporation type sewage source heat pump system is sequentially communicated with a condenser b19, a compressor b20 and an evaporator b21 which form a closed loop, an expansion valve b22 is arranged on a communication pipeline of the evaporator b21 and the condenser b19, the condenser b19 is connected to a heat supply network circulating water pipe 25 in parallel, a stop valve is arranged between two parallel-connected nodes of the condenser b19 and the heat supply network circulating water pipe 25, a stop valve and an electric regulating valve b23 are sequentially arranged on a communication pipeline of water inlets of the heat supply network circulating water pipe 25 and the condenser b19, and a stop valve is arranged on a communication pipeline of a water outlet of the condenser b19 and the heat supply network circulating water pipe 25; a water inlet of an evaporator b21 is communicated with a flash tank 10 through a pipeline, flash steam generated by the flash tank 10 is used as a low-temperature heat source of the evaporator b21, and the problem of blockage of a sewage source evaporator b21 is solved; the outlet of the evaporator 10 is communicated with a condensate pump 14 through a pipeline, the condensate pump 14 is respectively communicated with the flash tank 10 and the condensate tank 13 through pipelines, the condensate in the condensate tank 13 can be used for supplying water to non-drinking water such as hot pipe circulating water, the water consumption of the system is reduced, and the pipeline where the condensate pump 14 is communicated with the flash tank 10 and the condensate tank 13 is provided with a stop valve.
The heat storage tank 15 is connected in parallel to the heat supply network circulating water pipe 25, a stop valve is arranged between two parallel-connected nodes of the heat storage tank 15 and the heat supply network circulating water pipe 25, the stop valve and the electric control valve d24 are sequentially arranged on a communicating pipeline of inlets of the heat supply network circulating water pipe 25 and the heat storage tank 15, and the stop valve is arranged on a communicating pipeline of an outlet of the heat storage tank 15 and the heat supply network circulating water pipe 25.
The utility model discloses mode is the heating of air source heat pump system and pressure flash distillation type sewage source heat pump system two-stage, and solar energy collection system heats the heat supply network return water according to illumination intensity fungible air source heat pump system or air source heat pump system and pressure flash distillation type sewage source heat pump system.
When the sunlight is sufficient in the daytime, the air source heat pump system and the pressure flash type sewage source heat pump system are closed, the heat supply network backwater is heated only by the solar heat collecting system, the groove type solar heat collector 1 condenses and heats internal heat conducting oil, the heat collecting oil circulating pump 2 drives the heat conducting oil to circulate, the heat conducting oil is transferred to the shell and tube heat exchanger 3 to exchange heat with the heat supply network backwater, the heat supply network backwater is heated to the temperature of water supply, and the redundant heat is stored in the heat storage tank 15.
When the sunlight is insufficient in the daytime, the solar heat collecting system is not enough to heat the return water of the heat supply network to the temperature of water supply, at the moment, the solar heat collecting system and the heat storage tank 15 heat the return water of the heat supply network together, when the thermal power of the solar heat collecting system and the heat storage tank 15 is not enough to heat the return water of the heat supply network to the required temperature of water supply, the flash evaporation type sewage source heat pump system is started to be used as a high-temperature heating section, the solar heat collecting system is used as a low-temperature heating section, the groove type solar heat collector 1 condenses and heats internal heat conducting oil, the heat conducting oil circulating pump 2 drives the heat conducting oil to circulate, the heat conducting oil is transferred to the shell-and-tube heat exchanger 3 to exchange heat with the return water of the heat supply network to finish the heating of the low-temperature section, the return water of the heat supply network heated by the low temperature of the solar heat collecting system enters the pressure flash evaporation type sewage source heat pump system, domestic sewage is sprayed into the flash tank 10 by the sewage spray nozzle 11 under the action of the sewage spray pump 8, a vacuum pump 12 on one side of the flash tank 10 maintains the negative pressure state in the flash tank, the characteristic that the saturation temperature of water vapor is reduced along with the reduction of the environmental pressure is utilized, the sewage is evaporated in the flash tank to absorb the low-temperature waste heat of the sewage, the generated negative pressure steam flows out of the flash tank 10 to an evaporator b21 to be used as a low-temperature heat source, a circulating working medium in the evaporator b21 absorbs heat and then is subjected to heat release and heat exchange with heat supply network backwater through a compressor b to a condenser b19, so that the heating of a heat supply network backwater high-temperature section is completed, and the circulating working medium is decompressed by an expansion valve b22 after heat release and then is sent to the evaporator b21; if the time is exactly the valley power time, the heating power of the flash evaporation type sewage source heat pump system is adjusted upwards, and the surplus heat is stored in the heat storage tank 15 for heat compensation in the peak power time.
When no illumination is available at night, the solar heat collection system is closed, the air source heat pump system and the pressure flash type sewage source heat pump system are started, the air source heat pump system serves as a low-temperature heating section of heat supply network circulating water, the pressure flash type sewage source heat pump system serves as a high-temperature heating section, circulating working media in the air source heat pump system are evaporated and absorb heat on the evaporator a6 side, heat is released from a compressor a5 to a condenser a4, and low-temperature section heating is carried out on return water of the heat supply network; after releasing heat, the circulating working medium is decompressed by an expansion valve a7 and then is sent to an evaporator a6;
the heat supply network circulating water heated by the air source heat pump system at low temperature flows into a pressure flash evaporation type sewage source heat pump system, domestic sewage is sprayed into a flash tank 10 from a sewage spray nozzle 11 under the action of a sewage spray pump 8, a vacuum pump 12 on one side of the flash tank 10 maintains a negative pressure state in the flash tank, the sewage is evaporated in the tank to absorb low-temperature waste heat of the sewage by utilizing the characteristic that the saturation temperature of water vapor is reduced along with the reduction of the environmental pressure, the generated negative pressure steam flows out of the flash tank 10 to an evaporator b21 to be used as a low-temperature heat source, a circulating working medium in the evaporator b21 absorbs heat and then is subjected to heat release from a compressor b to a condenser b19 to exchange heat with heat supply network backwater, so that the heating of a heat supply network backwater high-temperature section is completed, and the circulating working medium is decompressed by an expansion valve b22 after heat release and then is sent to the evaporator b21; if the time is just the valley power time, the heating power of the air source heat pump system and the flash evaporation type sewage source heat pump system is adjusted upwards, and the redundant heat is stored in the heat storage tank 15 for heat supplement at the peak power time.
The utility model discloses utilize slot type solar collector 1, air source heat pump system, flash tank 10, 15 joint heating of heat storage tank for hierarchical heating heat supply network circulating water return water, can be in the time of retrieving air and domestic sewage low temperature waste heat, improve heat pump heating coefficient of performance, reduce heat pump power consumption, cooperate the 15 rational utilization peak valley price of electricity of heat storage tank simultaneously and further reduce the running cost, reduce the pollutant emission, improve energy utilization, improve heat supply quality, reach energy saving and emission reduction's purpose.
Claims (6)
1. The photoelectric complementary multistage heating flash type compression heat pump heat supply system is characterized by comprising a heat supply network circulating water pipe (25), wherein a heat supply network circulating water pump (18) is arranged on the heat supply network circulating water pipe (25), and the heat supply network circulating water pipe (25) is sequentially communicated with a solar heat collection system, an air source heat pump system, a negative pressure flash type sewage source heat pump system and a heat storage tank (15) according to a return water flow direction;
the solar heat collection system comprises a shell-and-tube heat exchanger (3), the communication position of a water inlet of the shell-and-tube heat exchanger (3) and a heat supply network circulating water pipe (25) is located at the front end of the communication position of the air source heat pump system and the heat supply network circulating water pipe (25), the communication position of a water outlet of the shell-and-tube heat exchanger (3) and the heat supply network circulating water pipe (25) is respectively located between the communication positions of the air source heat pump system and the negative pressure flash evaporation type sewage source heat pump system and the heat supply network circulating water pipe (25) and at the rear end of the communication position of the negative pressure flash evaporation type sewage source heat pump system and the heat supply network circulating water pipe (25).
2. The photoelectric complementary multistage heating flash type compression heat pump heating system according to claim 1, wherein the heat supply network circulating water pipe (25) is respectively communicated with a water inlet and a water outlet of the heat storage tank (15) through pipelines, a stop valve and an electric control valve d (24) are sequentially arranged on a pipeline communicating the heat supply network circulating water pipe (25) with the water inlet of the heat storage tank (15), and a stop valve is arranged on a pipeline communicating the heat supply network circulating water pipe (25) with the water outlet of the heat storage tank (15); and a stop valve is arranged between two nodes for communicating the heat storage tank (15) with the heat supply network circulating water pipe (25).
3. The photoelectric complementary multistage heating flash type compression heat pump heating system according to claim 1, wherein the solar heat collecting system comprises a trough type solar heat collector (1), the trough type solar heat collector (1) is communicated with a hot oil circulating pump (2) through a pipeline, and the hot oil circulating pump (2) is communicated with the shell-and-tube heat exchanger (3) through a pipeline.
4. The photoelectric complementary multistage heating flash type compression heat pump heating system according to claim 1, wherein the air source heat pump system comprises a condenser a (4), the condenser a (4) comprises a compressor a (5) and an evaporator a (6) which are sequentially communicated through a pipeline to form a closed loop, and an expansion valve a (7) is arranged on the pipeline connecting the evaporator a (6) and the condenser a (4);
condenser a (4) water inlet and delivery port pass through the pipeline parallelly connected extremely heat supply network circulating water pipe (25), condenser a (4) water inlet with stop valve and electrical control valve a (17) have set gradually on heat supply network circulating water pipe (25) the intercommunication pipeline, condenser a (4) delivery port with be provided with the stop valve on heat supply network circulating water pipe (25) the intercommunication pipeline, condenser a (4) with be provided with the stop valve between heat supply network circulating water pipe (25) the intercommunication two nodes.
5. The photoelectric complementary multistage heating flash type compression heat pump heating system according to claim 1, wherein the flash type sewage source heat pump system comprises a condenser b (19), the condenser b (19) comprises a compressor b (20) and an evaporator b (21) which are sequentially communicated through a pipeline to form a closed loop, and an expansion valve b (22) is arranged on the pipeline where the evaporator b (21) is communicated with the condenser b (19);
condenser b (19) water inlet and delivery port pass through the pipeline and connect in parallel to heat supply network circulating water pipe (25), condenser b (19) water inlet with stop valve and electrical control valve b (23) have set gradually on heat supply network circulating water pipe (25) the intercommunication pipeline, condenser b (19) delivery port with be provided with the stop valve on heat supply network circulating water pipe (25) the intercommunication pipeline, condenser b (19) with be provided with the stop valve between heat supply network circulating water pipe (25) the intercommunication two nodes.
6. The photoelectricity-complementary multistage heating flash type compression heat pump heating system according to claim 5, wherein an inlet of the evaporator b (21) is communicated with a flash tank (10) through a pipeline, a vacuum pump (12) is arranged on one side wall of the flash tank, a spray nozzle (11) is arranged in the flash tank (10) close to the top wall, the spray nozzle (11) is communicated with a user sewage source through a pipeline, a sewage spray pump (8) is arranged on the pipeline where the spray nozzle (11) is communicated with the user sewage source, a water storage tank is arranged below the spray nozzle (11), the water storage tank is communicated with a sewage return pump (9) through a pipeline,
the outlet of the evaporator b (21) is communicated with a condensate pump (14) through a pipeline, the condensate pump (14) is communicated with a condensate tank (13) and the flash tank (10) through a pipeline, a stop valve is arranged on a communication pipeline of the condensate pump (14) and the condensate tank (13), and a stop valve is arranged on a communication pipeline of the condensate pump (14) and the flash tank (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123085164.3U CN218237604U (en) | 2021-12-09 | 2021-12-09 | Photoelectric complementary multistage heating flash type compression heat pump heat supply system |
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| CN202123085164.3U CN218237604U (en) | 2021-12-09 | 2021-12-09 | Photoelectric complementary multistage heating flash type compression heat pump heat supply system |
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| CN202123085164.3U Active CN218237604U (en) | 2021-12-09 | 2021-12-09 | Photoelectric complementary multistage heating flash type compression heat pump heat supply system |
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