CN107894052B - Multi-water quality ultralow temperature and wide temperature range mixed water source heat pump air conditioning system - Google Patents
Multi-water quality ultralow temperature and wide temperature range mixed water source heat pump air conditioning system Download PDFInfo
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- CN107894052B CN107894052B CN201711372730.4A CN201711372730A CN107894052B CN 107894052 B CN107894052 B CN 107894052B CN 201711372730 A CN201711372730 A CN 201711372730A CN 107894052 B CN107894052 B CN 107894052B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 668
- 238000004378 air conditioning Methods 0.000 title claims abstract description 19
- 238000002955 isolation Methods 0.000 claims abstract description 187
- 239000010865 sewage Substances 0.000 claims abstract description 71
- 238000007710 freezing Methods 0.000 claims abstract description 5
- 239000008236 heating water Substances 0.000 claims description 28
- 239000012530 fluid Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 10
- 230000006698 induction Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000011552 falling film Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 230000008014 freezing Effects 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 description 51
- 230000002528 anti-freeze Effects 0.000 description 15
- 238000007599 discharging Methods 0.000 description 10
- 239000003507 refrigerant Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Other Air-Conditioning Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a multi-water quality ultralow temperature wide-temperature-band mixed water source heat pump air conditioning system which comprises a multi-water quality mixed water source isolation heat exchanger unit, a sewage mixed water source isolation heat exchanger unit and a clear water mixed water source heat exchanger unit. The heat pump air conditioning system can furthest utilize various water source heat energy in areas with lack of water source, and extract heat energy of clean water, sewage and wastewater; the waste heat in water at the temperature of between 9 ℃ below zero and 80 ℃ below zero can be fully utilized, the normal operation of the water outlet temperature between the equipment safety temperature of below 6 ℃ below zero and 12 ℃ below zero is ensured, the safety of the heat exchange unit is high, the risks of freezing out of the evaporator and blocking of silt are avoided, and the failure rate is low.
Description
Technical Field
The invention relates to the technical field of heat pump air conditioning circulating systems, in particular to a multi-water quality ultralow temperature wide temperature zone mixed water source heat pump air conditioning system.
Background
The winter heating and water heating equipment meets the environmental protection requirement and is only provided with a gas boiler and a heat pump. The fuel gas is more and more intense and the price is higher and higher. Heat pumps are the first choice for many businesses. Unstable air temperature in winter in the north directly influences the use and popularization of the air source heat pump. The water source heat pump is favored by a plurality of enterprises because the water source temperature is stable and has little change, energy conservation, environmental protection, high efficiency and the like.
The water source heat pump system takes shallow surface water, well water, domestic and industrial wastewater as a low-temperature heat source, and consists of a water source heat exchange unit, a heat exchange system, a high-temperature heat source or low-temperature cold source utilization system and a central control system, and the water source heat pump system is used as an application system of renewable energy sources, has good energy saving and environmental protection benefits, and is equivalent to reducing more than 30% of electric consumption compared with an air source heat pump and 70% of electric consumption compared with electric heating. Therefore, the water source heat pump technology is more and more paid attention to and is widely popularized and utilized by relevant departments of the country.
In order to protect the environment, save resources, reduce emission, the heat pump air conditioner heating technology of environmental protection and energy saving is greatly promoted in the northern heating area. However, the water source temperature range of the existing water source heat pump water heater unit is small, and the water source heat pump water heater unit cannot be directly utilized at the temperature of more than 20 ℃ and less than 10 ℃; the quality of the water source is single, and only wastewater, clear water, sewage and seawater can be selected singly. The limit temperature difference of the water source heat exchange unit is small, the water quantity of the water source is large, the heat-extraction capacity is small, and the water inlet and outlet temperature difference is less than 10 ℃; the lack of a water-saving control system is not applicable to water-deficient areas; the heat exchange efficiency of equipment pipelines, systems and heat exchangers is seriously attenuated, and the equipment pipelines, systems and heat exchangers need to be cleaned regularly in time; the sewage and other water sources need to be pre-arranged and pre-treated, and the sewage is changed into waste water, so that the sewage can be used, and the polluted and corroded water sources can not be used.
Disclosure of Invention
Based on the technical problems in the background technology, the invention provides a multi-water quality, ultra-low temperature and wide temperature range mixed water source heat pump air conditioning system.
The technical scheme of the invention is as follows:
the utility model provides a many quality of water, ultra-low temperature, wide temperature zone mixed water source heat pump air conditioning system, including many quality of water mixed source isolation heat exchanger unit, sewage mixed water source isolation heat exchanger unit and clear water mixed water source heat exchanger unit, many quality of water mixed source isolation heat exchanger unit's water inlet end is connected with two first isolation water pumps, the water inlet of first isolation heat exchanger is connected with two first mixed water pumps, the water inlet of first mixed water pump links to each other with the sewage source import, many quality of water mixed source isolation heat exchanger unit's water outlet end links to each other with the antifreeze fluid inlet of first isolation heat exchanger, the delivery port of first isolation heat exchanger links to each other with the sewage source export, and installs first row of water temperature accuse motorised valve between the delivery port of first isolation heat exchanger and the sewage source export, install first mixed water valve between the water inlet of first row water temperature accuse motorised valve and the sewage source import, and first row of water temperature accuse motorised valve connects in parallel first row bypass valve, many quality of water mixed source isolation heat exchanger unit's water outlet end still links to each other with the antifreeze fluid inlet of first isolation heat exchanger, the second water inlet of second isolation heat exchanger is connected with the antifreeze fluid inlet of second isolation heat exchanger, the water inlet of second isolation heat exchanger is connected with the second water inlet of second water temperature accuse valve, the water temperature of second isolation heat exchanger is connected with the water inlet of second isolation heat exchanger, the antifreeze fluid outlet is connected with the water inlet of second heat exchanger is connected with the antifreeze fluid inlet, the second water discharge temperature control electric valve is connected with a second water discharge bypass valve in parallel;
the water inlet end of the isolation end of the sewage mixed water source isolation heat exchanger unit is connected with two second isolation water pumps, the water inlet end of the second isolation water pump is connected with a third isolation heat exchanger, the water inlet end of the third isolation heat exchanger is connected with two third mixed water pumps, the water inlet end of the third mixed water pump is connected with a sewage source inlet, the water outlet of the third isolation heat exchanger is connected with a sewage source outlet, a third water discharge temperature control electric valve is arranged between the water outlet of the third isolation heat exchanger and the sewage source outlet, a third water mixing valve is arranged between the water inlet of the third water discharge temperature control electric valve and the sewage source inlet, the third water discharge temperature control electric valve is connected with a third water discharge bypass valve in parallel, the water outlet end of the sewage mixed water source isolation heat exchanger unit is connected with an antifreezing fluid inlet of the third isolation heat exchanger, and the antifreezing fluid outlet of the third isolation heat exchanger is connected with a second antifreezing fluid tank;
the water inlet end of the clean water mixed water source heat exchanger unit is connected with a fourth mixed water pump, the water inlet end of the fourth mixed water pump is connected with a water inlet valve, the water outlet end of the clean water mixed water source heat exchanger unit is connected with a water outlet valve, a fourth mixed water valve is arranged between the water inlet valve and the water inlet end and the water outlet end of the clean water mixed water source heat exchanger unit, the other water outlet end of the clean water mixed water source heat exchanger unit is sequentially connected with a high-load heating water pump and a low-load heating water pump, the water outlets of the high-load heating water pump and the low-load heating water pump are connected with a heating end, and the water inlet of the heating end is connected with the other water inlet end of the clean water mixed water source heat exchanger unit;
the other water inlet end of the multi-water-quality mixed water source isolation heat exchanger unit and the other water inlet end of the sewage mixed water source isolation heat exchanger unit are connected with the other water outlet end of the clear water mixed water source heat exchanger unit, and the other water outlet end of the multi-water-quality mixed water source isolation heat exchanger unit and the other water outlet end of the sewage mixed water source isolation heat exchanger unit are connected with the other water inlet end of the clear water mixed water source heat exchanger unit.
Preferably, the multi-water-quality mixed water source isolation heat exchange unit, the sewage mixed water source isolation heat exchange unit and the clear water mixed water source heat exchange unit are ultralow-temperature mixed water source heat exchange units and all comprise an evaporator, a condenser, a compressor and a circulating water pump, the evaporator is an anti-freezing falling film evaporator with the temperature of minus 15 ℃, an oil return device is arranged on the evaporator, the condenser is a corrosion-resistant shell-and-tube condenser, an expansion valve is connected on the condenser, and the compressor is a screw compressor or a centrifugal compressor with the limit temperature difference of more than 105 ℃.
Preferably, the water inlet end of the multi-water-quality water-mixing-source isolated heat exchanger unit is provided with a soft joint, a pressure gauge and a thermometer, the other water inlet end of the multi-water-quality water-mixing-source isolated heat exchanger unit is provided with a soft joint and a valve, the water outlet end of the multi-water-quality water-mixing-source isolated heat exchanger unit is provided with a soft joint, a water flow switch, a pressure gauge and a thermometer, and the other water outlet end of the multi-water-quality water-mixing-source isolated heat exchanger unit is provided with a soft joint, a valve, a water flow switch, a pressure gauge and a thermometer.
Preferably, the water inlet end of the sewage mixed water source isolation heat exchanger unit is provided with a soft joint, a pressure gauge and a thermometer, the other water inlet end of the sewage mixed water source isolation heat exchanger unit is provided with a soft joint and a valve, the water outlet end of the sewage mixed water source isolation heat exchanger unit is provided with a soft joint, a water flow switch, a pressure gauge and a thermometer, and the other water outlet end of the sewage mixed water source isolation heat exchanger unit is provided with a soft joint, a valve, a water flow switch, a pressure gauge and a thermometer.
Preferably, the water inlet end of the clean water mixed water source heat exchange unit is provided with a soft joint and a thermometer, the other water inlet end of the clean water mixed water source heat exchange unit is provided with a soft joint, a valve, a water flow switch, a pressure gauge and a thermometer, the water outlet end of the clean water mixed water source heat exchange unit is provided with a soft joint, a water flow switch, a pressure gauge and a thermometer, and the other water outlet end of the clean water mixed water source heat exchange unit is provided with a soft joint and a valve.
Preferably, the water inlets of the first isolation water pump, the first water mixing pump, the second water mixing pump, the third water mixing pump, the fourth water mixing pump, the high-load heating water pump and the low-load heating water pump are all provided with soft joints, and the water outlets of the first isolation water pump, the first water mixing pump, the second water mixing pump, the third water mixing pump, the fourth water mixing pump, the high-load heating water pump and the low-load heating water pump are all provided with soft joints and check valves.
Preferably, the first isolation heat exchanger, the second isolation heat exchanger, the third isolation heat exchanger and the clean water mixed water source heat exchanger unit are provided with the induction cleaning device on the pipeline, the water inlets of the first isolation heat exchanger, the second isolation heat exchanger and the third isolation heat exchanger are provided with the pressure gauge and the thermometer, and the water outlets of the first isolation heat exchanger, the second isolation heat exchanger and the third isolation heat exchanger are provided with the water flow switch, the pressure gauge and the thermometer.
Preferably, the first isolation water pump, the first water mixing pump, the second isolation water pump, the third water mixing pump, the fourth water mixing pump and the heating water pump are multistage water pumps connected in parallel.
The invention has the beneficial effects that:
the multi-water mixed water source isolation heat exchange unit, the sewage mixed water source isolation heat exchange unit and the clear water mixed water source heat exchange unit are all ultralow-temperature mixed water source heat exchange units, the limit temperature difference of the inlet and outlet water sources of the evaporator condenser is large, and the adaptability is strong; different types of water sources (sewage, waste water, corrosive and toxic water and the like) can be utilized through the isolation heat exchanger, heat energy in the water sources can be fully utilized through the cooperation of the temperature control electric valve, the drainage bypass valve, the water mixing valve and the water mixing pump, other water sources are not polluted, antifreeze can be provided through the antifreeze water tank, and meanwhile, buffering is provided for the antifreeze with temperature difference change; the water mixing pump and the water discharging temperature control electric valve are matched to realize continuous circulation heat exchange of water discharged at a higher temperature, so that the temperature of the water discharged can be controlled, and a heat source is fully utilized; the device can crush and dissolve sundries in water through the induction cleaning device, dynamically clean and clean dirt on the surfaces of heat exchangers, equipment and system pipelines, and the first isolation water pump, the first water mixing pump, the second isolation water pump, the third water mixing pump, the fourth water mixing pump and the heating water pump are multistage water pumps connected in parallel, the water pump flows are different, one-standby, large-small and large-small configuration modes can be realized, and the energy-saving operation requirement is met.
By adopting an ultralow temperature mixed water source heat exchanger unit, through the synergistic effect of a compressor, a mixed water pump, a temperature control electric valve, a mixed water valve and an isolation heat exchanger, compared with the limit temperature difference of a compressor of a conventional unit, the limit temperature difference of water source inlet temperature is 10-20 ℃, the hot water outlet temperature is guaranteed, the limit temperature difference of inlet water and outlet water is less than 50-55 ℃, and the limit temperature difference of air suction and exhaust of the compressor of the unit is more than 105 ℃; the temperature range of water inlet of the water source is enlarged to-9 to +80 ℃ by the water mixing pump, and the limit temperature difference of water inlet and outlet reaches more than 80 ℃; the normal operation of the conventional unit cannot be performed when the outlet water temperature is lower than 6 ℃, the interior of the evaporator may be frozen, and the isolation heat exchanger adopts an antifreezing solution, so that the normal operation can be ensured at-12 ℃, and therefore, the compression suction and exhaust limit temperature difference is higher than 100-105 ℃, and the hot water outlet temperature reaches 45-65 ℃ within the range of the inlet water temperature of a water source of 20-80 ℃ and the outlet water temperature of 6-12 ℃.
The multi-water quality ultralow temperature and wide temperature band mixed water source heat pump air conditioning system can furthest utilize the heat energy of a water source in the areas with lack of the water source. More than 70% -300% of heat energy can be extracted than the traditional method; can extract various high-temperature heat energy of clean water, sewage and wastewater for heating; waste heat in various fluids with the temperature higher than 20 ℃ can be fully utilized; the heat exchanger unit has high safety, no risk of freezing out and blocking silt of the evaporator and lowest fault; the heating operation energy consumption is saved by more than half than the traditional heating operation energy consumption; the sewage source can enter the heat pump system for use only by simple filtration.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a pipeline layout diagram of a multi-water quality ultra-low temperature and wide temperature range mixed water source heat pump air conditioning system.
In the figure: 1-multi-water quality water mixing source isolation heat exchanger unit, 101-first isolation water pump, 102-first isolation heat exchanger, 1021-second isolation heat exchanger, 103-first water mixing pump, 1031-second water mixing pump, 104-first water mixing valve, 1041-second water mixing valve, 105-first water discharging temperature control electric valve, 1051-second water discharging temperature control electric valve, 106 first water discharging bypass valve, 1061-second water discharging bypass valve and 107-first antifreeze water tank;
2-sewage mixed water source isolation heat exchanger unit, 201-second isolation water pump, 202-third isolation heat exchanger, 203-third water mixing pump, 204-third water mixing valve, 205-third water discharge temperature control electric valve, 206-third water discharge bypass valve and 207-second antifreeze water tank;
3-clean water mixed water source heat exchange unit, 301-fourth mixed water pump, 302-fourth mixed water valve, 303-water inlet valve, 304-drain valve and 305-heating water pump;
the device comprises a 4-soft joint, a 5-valve, a 6-thermometer, a 7-pressure gauge, an 8-water flow switch, a 9-one-way valve and a 10-induction cleaning device;
a-water inlet end and B-water outlet end.
Detailed Description
The invention is further illustrated below in connection with specific embodiments.
A multi-water quality ultra-low temperature and wide temperature range mixed water source heat pump air conditioning system comprises a multi-water quality mixed water source isolation heat exchanger unit 1, a sewage mixed water source isolation heat exchanger unit 2 and a clear water mixed water source heat exchanger unit 3, wherein a water inlet end A1 of the multi-water quality mixed water source isolation heat exchanger unit 1 is connected with two first isolation water pumps 101, a water inlet of each first isolation water pump 101 is connected with a first isolation heat exchanger 102, a water inlet of each first isolation heat exchanger 102 is connected with two first mixed water pumps 103, a water inlet of each first mixed water pump 103 is connected with a sewage source inlet, a water outlet end B1 of the multi-water quality mixed water source isolation heat exchanger unit 1 is connected with an antifreezing solution inlet of each first isolation heat exchanger 102, a water outlet of each first isolation heat exchanger 102 is connected with a sewage source outlet, a first water outlet temperature control electric valve 105 is arranged between the water outlet of each first isolation heat exchanger 102 and the sewage source outlet, a first water mixing valve 104 is arranged between a water inlet of the first water discharge temperature control electric valve 105 and a sewage source inlet, the first water discharge temperature control electric valve 105 is connected with a first water discharge bypass valve 106 in parallel, a water outlet end B1 of the multi-water quality water mixing source isolation heat exchanger unit 1 is also connected with a second isolation heat exchanger 1021, an antifreezing solution outlet of the second isolation heat exchanger 1021 is connected with a water inlet of the first isolation water pump 101, an antifreezing solution outlet of the second isolation heat exchanger 1021 is also connected with a first antifreezing solution tank 107, a water inlet of the second isolation heat exchanger 1021 is connected with two second water mixing pumps 1031, a water inlet of the second water mixing pump 1031 is connected with a clean water source inlet, a water outlet of the second isolation heat exchanger 1021 is connected with a clean water source outlet, a second water discharge temperature control electric valve 1051 is arranged between a water outlet of the second isolation heat exchanger 1021 and the clean water source outlet, a second water mixing valve 1041 is arranged between the water inlet of the second water discharge temperature control electric valve 1051 and the clean water source inlet, and a second drain bypass valve 1061 is connected in parallel with the second drain temperature control motor valve 1051;
the water inlet end A3 of the sewage mixed water source isolation heat exchanger unit 2 is connected with two second isolation water pumps 201, the water inlet of the second isolation water pumps 201 is connected with a third isolation heat exchanger 202, the water inlet of the third isolation heat exchanger 202 is connected with two third mixed water pumps 203, the water inlet of the third mixed water pump 203 is connected with a sewage source inlet, the water outlet of the third isolation heat exchanger 202 is connected with a sewage source outlet, a third water discharge temperature control electric valve 205 is arranged between the water outlet of the third isolation heat exchanger 202 and the sewage source outlet, a third water mixing valve 204 is arranged between the water inlet of the third water discharge temperature control electric valve 205 and the sewage source inlet, the third water discharge temperature control electric valve 205 is connected with a third water discharge bypass valve 206 in parallel, the water outlet end B3 of the sewage mixed water source isolation heat exchanger unit 2 is connected with an antifreezing fluid inlet of the third isolation heat exchanger 202, and the antifreezing fluid outlet of the third isolation heat exchanger 202 is connected with a second antifreezing fluid tank 207;
the water inlet end A5 of the clean water mixed water source heat exchanger unit 3 is connected with a fourth mixed water pump 301, the water inlet end of the fourth mixed water pump 301 is connected with a water inlet valve 303, the water outlet end B5 of the clean water mixed water source heat exchanger unit 3 is connected with a water outlet valve 304, a fourth mixed water valve 302 is arranged between the water inlet valve 303, the water outlet valve 304 and the water inlet end A5 and the water outlet end B5 of the clean water mixed water source heat exchanger unit 3, the water outlet ends of the water inlet valve 303 and the water outlet valve 304 are connected with a well pump, the other water outlet end B6 of the clean water mixed water source heat exchanger unit 3 is connected with a heating water pump 305, the water outlet of the heating water pump 305 is connected with a heating end, and the water inlet of the heating end is connected with the other water inlet end A6 of the clean water mixed water source heat exchanger unit 3;
the other water inlet end A2 of the multi-water-quality mixed water source isolation heat exchanger unit 1 and the other water inlet end A4 of the sewage mixed water source isolation heat exchanger unit 2 are connected with the other water outlet end B6 of the clean water mixed water source heat exchanger unit 3, and the other water outlet end B2 of the multi-water-quality mixed water source isolation heat exchanger unit 1 and the other water outlet end B4 of the sewage mixed water source isolation heat exchanger unit 2 are connected with the other water inlet end A6 of the clean water mixed water source heat exchanger unit 3.
The multi-water-quality mixed water source isolation heat exchanger unit 1, the sewage mixed water source isolation heat exchanger unit 2 and the clear water mixed water source heat exchanger unit 3 are ultralow-temperature mixed water source heat exchanger units and all comprise an evaporator, a condenser, a compressor and a circulating water pump, wherein the evaporator is an anti-freezing falling film evaporator with low temperature of minus 15 ℃, an oil return device is arranged on the evaporator, the condenser is an anti-corrosion shell-and-tube condenser, an expansion valve is connected on the condenser, and the compressor is a screw compressor or a centrifugal compressor with limit temperature difference of more than 105 ℃, wherein the compressor is customized: the shell is required to adopt ball-milling cast steel, the temperature is less than minus 20 ℃, the air suction temperature is less than minus 15 ℃, and no cracking phenomenon exists; the refrigerating oil is fed into the low pressure side through the high pressure side oil guide pipe, and the oil temperature is balanced. The high temperature is 150 ℃, and no abnormal phenomenon exists; the frozen oil can be operated at high temperature and low temperature; when the load capacity is 100%, the temperature of the air suction side is minus 12 ℃, and the temperature of the air discharge side can reach more than 95 ℃.
The water inlet end A1 of the multi-water-quality mixed water source isolation heat exchange unit 1 is provided with a soft joint 4, a pressure gauge 7 and a thermometer 6, the other water inlet end A2 of the multi-water-quality mixed water source isolation heat exchange unit 1 is provided with a soft joint 4 and a valve 5, the water outlet end B1 of the multi-water-quality mixed water source isolation heat exchange unit 1 is provided with a soft joint 4, a water flow switch 8, a pressure gauge 7 and a thermometer 6, and the other water outlet end B2 of the multi-water-quality mixed water source isolation heat exchange unit 1 is provided with a soft joint 4, a valve 5, a water flow switch 8, a pressure gauge 7 and a thermometer 6.
The water inlet end A3 of the sewage mixed water source isolation heat exchange unit 2 is provided with a soft joint 4, a pressure gauge 7 and a thermometer 6, the other water inlet end A4 of the sewage mixed water source isolation heat exchange unit 2 is provided with a soft joint 4 and a valve 5, the water outlet end B3 of the sewage mixed water source isolation heat exchange unit 2 is provided with a soft joint 4, a water flow switch 8, a pressure gauge 7 and a thermometer 6, and the other water outlet end B4 of the sewage mixed water source isolation heat exchange unit 2 is provided with a soft joint 4, a valve 5, a water flow switch 8, a pressure gauge 7 and a thermometer 6.
The water inlet end A5 of the clean water mixed water source heat exchange unit 3 is provided with a soft joint 4 and a thermometer 6, the other water inlet end A6 of the clean water mixed water source heat exchange unit 3 is provided with a soft joint 4, a valve 5, a water flow switch 8, a pressure gauge 7 and a thermometer 6, the water outlet end B5 of the clean water mixed water source heat exchange unit 3 is provided with a soft joint 4, a water flow switch 8, a pressure gauge 7 and a thermometer 6, and the other water outlet end B6 of the clean water mixed water source heat exchange unit 3 is provided with a soft joint 4 and a valve 5.
The water inlets of the first isolation water pump 101, the first water mixing pump 103, the second water mixing pump 1031, the second water mixing pump 201, the third water mixing pump 203, the fourth water mixing pump 301, the high-load heating water pump 305 and the low-load heating water pump 306 are all provided with the soft joint 4, and the water outlets of the first isolation water pump 101, the first water mixing pump 103, the second water mixing pump 1031, the second water mixing pump 201, the third water mixing pump 203, the fourth water mixing pump 301 and the heating water pump 305 are all provided with the soft joint 4 and the one-way valve 9.
The induction cleaning device 10 is installed on the pipelines of the first isolation heat exchanger 102, the second isolation heat exchanger 1021, the third isolation heat exchanger 202 and the clean water mixed water source heat exchanger unit 3, the pressure gauge 7 and the thermometer 6 are installed at the water inlets of the first isolation heat exchanger 102, the second isolation heat exchanger 1021 and the third isolation heat exchanger 202, the water flow switch 8, the pressure gauge 7 and the thermometer 6 are installed at the water outlets of the first isolation heat exchanger 102, the second isolation heat exchanger 1021 and the third isolation heat exchanger 202, and the induction cleaning device 10 is a pipeline cleaning device disclosed in patent number ZL201520083936.5 (functional induction descaling device).
The first isolation water pump 101, the first water mixing pump 103, the second water mixing pump 1031, the second isolation water pump 201, the third water mixing pump 203, the fourth water mixing pump 301 and the heating water pump 305 are multistage water pumps which are connected in parallel, the parallel water pumps have different load capacities, the size flow can be adjusted when the device is used, and the large, medium and small flow modes are realized.
Working principle:
the sewage source and the fresh water source are respectively pumped into the first isolation heat exchanger 102 and the second isolation heat exchanger 1021 through the first water mixing pump 103 and the second water mixing pump 1031, heat exchange is carried out between the antifreeze in the first antifreeze water tank 107 and the entered water source, the warmed antifreeze is pumped into the multi-water quality water mixing source isolation heat exchanger 1 through the pipeline A1 by the first isolation water pump 101, is discharged through the pipeline B1 after heat exchange with the heating agent in the evaporator in the heat exchanger, the water source (clean water and sewage) after heat exchange is discharged out of the corresponding isolation heat exchanger, the quantity of the discharged water is automatically controlled according to the temperature of the discharged water through the first water discharging temperature control electric valve 105 and the second water discharging temperature control electric valve 1051, when the temperature of the discharged water is higher, the discharged water is continuously utilized from the corresponding water discharging temperature control electric valve through the corresponding first water discharging bypass valve 106 and the second water discharging bypass valve 1061, and the water source is mixed with the water source through the first water mixing valve 104 and the second water mixing valve 1041 after heat exchange is adjusted to be suitable for optimal heat exchange; the sewage mixed water source isolation heat exchanger unit 2 performs isolation heat exchange on the sewage source according to the same steps; the clean water mixed water source heat exchange unit 3 directly exchanges heat between clean water and a heating agent in the unit without isolating heat exchange, and the temperature of the water after heat exchange is still higher, and then the water is mixed with water at a water source inlet through the fourth mixed water pump 301 and the fourth mixed water valve 302 to continue heat exchange; the multi-water-quality mixed water source isolation heat exchange unit 1 and the sewage mixed water source isolation heat exchange unit 2 are pumped into corresponding units through a first isolation water pump 101 and a second isolation water pump 201, heat exchange is carried out on the heat exchanged refrigerant and a fixed amount of circulating water in the units, the heat exchanged circulating water is pumped into the clean water mixed water source heat exchange unit 3 through pipelines B2 and B4, the heat exchange principles among the three units are consistent, the high-temperature and high-pressure refrigerant gas enters a condenser from a compressor, the heat is discharged from the refrigerant into the circulating water to be cooled into high-pressure liquid, the temperature of the circulating water is increased, the refrigerant is expanded into low-temperature and low-pressure liquid through an expansion valve, the heat in the antifreeze liquid is absorbed by an evaporator, the low-pressure steam is evaporated, the temperature in the antifreeze liquid is reduced, the low-pressure refrigerant steam enters the compressor to be compressed into high-temperature and high-pressure gas, and the high-temperature circulating water is obtained in the condenser in a circulating way; the high-load heating water pump 305 and the low-load heating water pump 306 exchange heat for a user through the pipeline B6, the circulating water after heat exchange flows back to the clean water mixed water source heat exchange unit 3 through the pipeline A6, flows back to the multi-water mixed water source isolation heat exchange unit 1 and the sewage mixed water source isolation heat exchange unit 2 through the pipelines A2 and A4, and continues to exchange the circulating heat, and similarly, the heat exchange of the clean water source can be realized through the pipelines A5 and B5, and the induction cleaning device 10 can generate corresponding induction cleaning microwave oscillation signals according to signals released by relevant substances for detecting scale formation or organic viscosity in water, so that the purposes of dynamically cleaning, preventing scale and blocking are realized.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (8)
1. A multi-water quality ultralow temperature and wide temperature band mixed water source heat pump air conditioning system is characterized in that: the system comprises a multi-water-quality mixed water source isolation heat exchange unit, a sewage mixed water source isolation heat exchange unit and a clear water mixed water source heat exchange unit, wherein the water inlet end of the multi-water-quality mixed water source isolation heat exchange unit is connected with two first isolation water pumps, the water inlet of each first isolation water pump is connected with two first mixed water pumps, the water inlet end of each first mixed water pump is connected with a sewage source inlet, the water outlet end of the multi-water-quality mixed water source isolation heat exchange unit is connected with an antifreezing fluid inlet of each first isolation heat exchanger, the water outlet of each first isolation heat exchanger is connected with a sewage source outlet, a first water outlet temperature control electric valve is arranged between the water outlet of each first isolation heat exchanger and the sewage source outlet, a first water outlet temperature control electric valve is arranged between the water inlet of each first water outlet temperature control electric valve and the sewage source inlet, the first water outlet temperature control electric valve is connected with a first water outlet bypass valve in parallel, the water outlet end of the multi-water mixed water source isolation heat exchange unit is also connected with a second isolation heat exchanger, the antifreezing fluid outlet of each second isolation heat exchanger is connected with the second water outlet of each second water source electric valve in parallel, the antifreezing fluid outlet of each second isolation heat exchanger is connected with the second water outlet of each second water source electric valve is connected with the water outlet of each second water source electric valve, and the antifreezing water outlet water valve is connected with the water valve;
the water inlet end of the sewage mixed water source isolation heat exchanger unit is connected with two second isolation water pumps, the water inlet of the second isolation water pumps is connected with a third isolation heat exchanger, the water inlet of the third isolation heat exchanger is connected with two third mixed water pumps, the water inlet of the third mixed water pumps is connected with a sewage source inlet, the water outlet of the third isolation heat exchanger is connected with a sewage source outlet, a third water outlet temperature control electric valve is arranged between the water outlet of the third isolation heat exchanger and the sewage source outlet, a third mixed water valve is arranged between the water inlet of the third water outlet temperature control electric valve and the sewage source inlet, the third water outlet temperature control electric valve is connected with a third water outlet bypass valve in parallel, the water outlet end of the sewage mixed water source isolation heat exchanger unit is connected with an antifreezing fluid inlet of the third isolation heat exchanger, and the antifreezing fluid outlet of the third isolation heat exchanger is connected with a second antifreezing fluid tank;
the water inlet end of the clean water mixed water source heat exchanger unit is connected with a fourth mixed water pump, the water inlet end of the fourth mixed water pump is connected with a water inlet valve, the water outlet end of the clean water mixed water source heat exchanger unit is connected with a water outlet valve, a fourth mixed water valve is arranged between the water inlet valve and the water inlet end and the water outlet end of the clean water mixed water source heat exchanger unit, the other water outlet end of the clean water mixed water source heat exchanger unit is sequentially connected with a high-load heating water pump and a low-load heating water pump, the water outlets of the high-load heating water pump and the low-load heating water pump are connected with a heating end, and the water inlet of the heating end is connected with the other water inlet end of the clean water mixed water source heat exchanger unit;
the other water inlet end of the multi-water-quality mixed water source isolation heat exchanger unit and the other water inlet end of the sewage mixed water source isolation heat exchanger unit are connected with the other water outlet end of the clear water mixed water source heat exchanger unit, and the other water outlet end of the multi-water-quality mixed water source isolation heat exchanger unit and the other water outlet end of the sewage mixed water source isolation heat exchanger unit are connected with the other water inlet end of the clear water mixed water source heat exchanger unit.
2. The multi-water quality ultralow temperature and wide temperature range mixed water source heat pump air conditioning system according to claim 1, wherein the multi-water quality mixed water source isolation heat exchanger unit, the sewage mixed water source isolation heat exchanger unit and the clear water mixed water source heat exchanger unit are ultralow temperature mixed water source heat exchanger units and comprise an evaporator, a condenser, a compressor and a circulating water pump, the evaporator is an anti-freezing falling film evaporator with low temperature resistance of minus 15 ℃, an oil return device is arranged on the evaporator, the condenser is a corrosion-resistant shell-and-tube condenser, an expansion valve is connected on the condenser, and the compressor is a screw compressor or a centrifugal compressor with the limit temperature difference of suction and exhaust of more than 105 ℃.
3. The multi-water quality ultra-low temperature and wide temperature range mixed water source heat pump air conditioning system according to claim 1, wherein a soft joint, a pressure gauge and a thermometer are installed at the water inlet end of the multi-water quality mixed water source isolation heat exchanger unit, a soft joint and a valve are installed at the other water inlet end of the multi-water quality mixed water source isolation heat exchanger unit, a soft joint, a water flow switch, a pressure gauge and a thermometer are installed at the water outlet end of the multi-water quality mixed water source isolation heat exchanger unit, and a soft joint, a valve, a water flow switch, a pressure gauge and a thermometer are installed at the other water outlet end of the multi-water quality mixed water source isolation heat exchanger unit.
4. The multi-water quality ultralow temperature and wide temperature range mixed water source heat pump air conditioning system according to claim 1, wherein a soft joint, a pressure gauge and a thermometer are installed at the water inlet end of the sewage mixed water source isolation heat exchanger unit, a soft joint and a valve are installed at the other water inlet end of the sewage mixed water source isolation heat exchanger unit, a soft joint, a water flow switch, a pressure gauge and a thermometer are installed at the water outlet end of the sewage mixed water source isolation heat exchanger unit, and a soft joint, a valve, a water flow switch, a pressure gauge and a thermometer are installed at the other water outlet end of the sewage mixed water source isolation heat exchanger unit.
5. The multi-water quality ultralow temperature wide-temperature-band mixed water source heat pump air conditioning system according to claim 1, wherein a soft joint and a thermometer are arranged at the water inlet end of the clean water mixed water source heat exchange unit, a soft joint, a valve, a water flow switch, a pressure gauge and a thermometer are arranged at the other water inlet end of the clean water mixed water source heat exchange unit, a soft joint, a water flow switch, a pressure gauge and a thermometer are arranged at the water outlet end of the clean water mixed water source heat exchange unit, and a soft joint and a valve are arranged at the other water outlet end of the clean water mixed water source heat exchange unit.
6. The multi-water quality ultralow temperature and wide temperature range mixed water source heat pump air conditioning system according to claim 1, wherein the water inlets of the first isolation water pump, the first mixed water pump, the second isolation water pump, the third mixed water pump, the fourth mixed water pump, the high-load heating water pump and the low-load heating water pump are all provided with soft joints, and the water outlets of the first isolation water pump, the first mixed water pump, the second isolation water pump, the third mixed water pump, the fourth mixed water pump, the high-load heating water pump and the low-load heating water pump are all provided with soft joints and check valves.
7. The multi-water quality ultralow temperature and wide temperature range mixed water source heat pump air conditioning system according to claim 1, wherein the first isolation heat exchanger, the second isolation heat exchanger, the third isolation heat exchanger and the clear water mixed water source heat exchanger unit are provided with induction cleaning devices on pipelines, water inlets of the first isolation heat exchanger, the second isolation heat exchanger and the third isolation heat exchanger are provided with pressure gauges and thermometers, and water outlets of the first isolation heat exchanger, the second isolation heat exchanger and the third isolation heat exchanger are provided with water flow switches, pressure gauges and thermometers.
8. The multi-water quality ultralow temperature wide temperature range mixed water source heat pump air conditioning system according to claim 1, wherein the first isolation water pump, the first mixed water pump, the second isolation water pump, the third mixed water pump, the fourth mixed water pump and the heating water pump are energy-saving water pumps connected in parallel.
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