CN108870511A - Steam, which suspends, condenses heat source tower heat pump heat supply station - Google Patents
Steam, which suspends, condenses heat source tower heat pump heat supply station Download PDFInfo
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- CN108870511A CN108870511A CN201810881389.3A CN201810881389A CN108870511A CN 108870511 A CN108870511 A CN 108870511A CN 201810881389 A CN201810881389 A CN 201810881389A CN 108870511 A CN108870511 A CN 108870511A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 239000000725 suspension Substances 0.000 claims abstract description 19
- 238000010521 absorption reaction Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 79
- 238000010257 thawing Methods 0.000 claims description 48
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- 230000008020 evaporation Effects 0.000 claims description 38
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D12/00—Other central heating systems
- F24D12/02—Other central heating systems having more than one heat source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/08—Electric heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
A kind of steam suspension condensation heat source tower heat pump heat supply station, it is characterised in that the condensation nano fluid that suspends absorbs heat source system and super low temperature heat pump paddy electricity superposition heating system.System has built-in nano-fluid and external nano coating salt fog resistance resistant alloy fin has high conduction heat transfer characteristic, absorbs the clammy heat source renewable energy of greenhouse haze, realizes that the frostless efficient utilization for taking heat absorption is avenged in clammy heat source suspension phase transformation.System is met -15 DEG C or less and is increased ultra-low temperature surroundings compressor attenuation compensation, cold snap thermoelectricity co-generating heat supplying and electric power output by multi-joint invariable frequency compressor module for compensating, and starting paddy electricity superposition thermal compensation cold snap heat pump heat supply is insufficient.System draws peak to Atmospheric Transportation low temperature cold air-flow simultaneously and drives haze, realizes that artificial cold source controls the economy and social benefit of haze.
Description
Technical field
" steam, which suspends, condenses heat source tower heat pump heat supply station " of the present invention is related to China's new energy source energy-saving technology, ring
Border protection and the big field of resource two.
Background technique
Winter clammy heat source is that the Water, steam circulation that is formed of Water Evaporation is generated by solar energy heating earth surface, and the and mankind
The exhaust gas discharged using fossil energy+waste heat forms steam greenhouse haze mixing source, that is, greenhouse effects renewable energy, suitable
Greenhouse effects can make solar energy shortwave radiation heat reach the earth, and prevent earth surface long wave heat radiation heat to outer space diffusion heat
Can, so that surface temperature is in equilibrium state.It has been that main consumption includes thermoelectricity co-generating heat supplying with fossil energy since the industrial revolution
Exhaust gas+waste heat, automobile power tail gas, industrial and agricultural production are discharged into excessive greenhouse gases into atmosphere and have broken global greenhouse effect
Balance, earth surface temperature increase global warming year by year and destroy stable atmospheric circulation, and meteorological disaster is frequent.Because of this person
Class needs a kind of with large-scale artificial cold source system, efficient absorption greenhouse effects renewable energy promotion heat supply reduction fossil energy energy
Source consumption is the artificial control measures for preventing global warming.China's mid latitudes domain part cold snap is opposite at present
Humidity reaches 80% and forms atmospheric inversion layer with fossil energy emission greenhouse gas with mixing, and steam greenhouse haze weather takes place frequently
Durations are long, and the renewable energy such as clammy heat source latent heat in the solar energy secondary source contained in air fail to be utilized effectively.
Country changes electric energy effect clean energy resource policy to administer haze application coal, and conventional small coal changes electric energy effect air-source at present
Heat-pump apparatus capacity is small, the simple low-intensity of compressor design is easy to damage, and it is mixed that Winter heat supply absorbs clammy heat source water steam temperature room haze
Conjunction source）The serious low efficiency of frosting, it is difficult to form scale rough atmosphere inversion layer circulation, not be able to achieve the drive of buterfly effect cold front
Haze, while outdoor heat pump unit noise is big and serious heat loss.
In early days to the heat source tower heat pump system of current innovative development still in sustained improvement and more new designing concept stage.
Issue of improvement existing for heat pump unit：Each manufacturer also rests on the basis of 10~15 DEG C of heat sources of water resource heat pump
Big temperature difference structure design, is constructed using single-head compressor, is unable to satisfy -15 DEG C or less ultra-low temperature surroundings compressor decaying needs
The demand of module for compensating leads to the reduction in heat capacity, and evaporator absorbs low temperature position heat under -15 DEG C of lower heat source temperatures
Source performance is poor, is unsaturated moist steam into compressor gas, causes compressor frosting serious, and low COP value becomes first bottle
Neck.
Heat source absorbs heat transfer unit (HTU) and needs the problem of improving：Closed type heat source tower absorbs built-in heat transfer used in hot low level heat source
Carrier is traditional aqua anti-freezing solution, and aqua anti-freezing solution increases with heat source temperature decline viscosity, and heat transfer property is down to less than pre-
The performance indicator of meter is only limited to -10 DEG C of air themperature operations, breaks through -15 DEG C or less and absorbs ultra-low temperature air heat source as second
Bottleneck.
Summary of the invention
The present invention provides a kind of steam suspension condensation heat source tower heat pump heat supply station, and system has built-in nano-fluid（System
Built-in nano-fluid prepares regenerative system）It is special to have high conduction heat transfer with external nano coating salt fog resistance resistant alloy fin
Property, the clammy heat source renewable energy of greenhouse haze is absorbed, realizes that the frostless efficient benefit for taking heat absorption is avenged in clammy heat source suspension phase transformation
With.System is met -15 DEG C or less to ultra-low temperature surroundings compressor attenuation compensation, is trembled with fear by multi-joint invariable frequency compressor module for compensating
Cold day gas thermoelectricity co-generating heat supplying and electric power output increase, and starting paddy electricity superposition thermal compensation cold snap heat pump heat supply is insufficient,
System draws peak to Atmospheric Transportation low temperature cold air-flow simultaneously and drives haze, realizes that artificial cold source controls the economy and social benefit of haze.
The technical solution adopted by the present invention to solve the technical problems is：It includes the condensation nano fluid absorption heat source system that suspends
System 1 and super low temperature heat pump paddy electricity are superimposed heating system 2, and it is outstanding including source vapor that the suspension condensation nano fluid absorbs heat source system 1
Floating condensation heat source tower 1100, nano-fluid prepare stirring expansion tank 1200, nano-fluid preparation regeneration emulsification pump 1300, paddy electricity speed
Hot piecemeal haze constant pressure arrangement 1400 white clearly and source nano-fluid drive the circulatory system 1500, and source vapor, which suspends, condenses heat source tower
1100 by valve and pipeline respectively with the mould in source tie-in point 15A, paddy electricity speed heat piecemeal haze constant pressure arrangement 1400 white clearly
The outlet of block defrosting check valve 1440 connection；1440 import of module defrosting check valve passes through pipeline and defrosting module conduits import contact
14C connection；The efficiently wide fin tube surface cooler 1150 of V-type nano hydrophobic in source vapor suspension condensation heat source tower 1100 exports
1152 by valve and pipeline respectively with the mould in source tie-in point 15B, paddy electricity speed heat piecemeal haze constant pressure arrangement 1400 white clearly
1450 import of block defrosting control valve connection；The outlet of module defrosting control valve 1450 is connect by pipeline with source tie-in point 15B；
The surface air cooler exhaust valve 1153 of source vapor suspension condensation heat source tower 1100 is prepared by pipeline and nano-fluid stirs expansion tank
The connection of 1200 liquid return hole contacts 1230；Nano-fluid prepares 1200 liquid outlet 1220 of stirring expansion tank and prepares pipeline input with nanometer
Contact 14E connection；Nano-fluid prepares 1200 top of stirring expansion tank and side is respectively provided with solution stirrer 1240, solution ratio
Restatement 1250, solution blend feed inlet 1260, softening water inlet 1210；Nano-fluid is prepared stirring 1200 liquid return hole of expansion tank and is connect
Point 1230 is expanded with the relief valve 1460 in paddy electricity speed heat piecemeal haze constant pressure arrangement 1400 white clearly, return hydraulic control respectively by pipeline
1442 connection of the outlet of valve group 1440；Return hydraulic control expands 1440 import 1441 of valve group and is connected by pipeline and source tie-in point 15C
It connects；Nano-fluid preparation regeneration 1300 suction inlet 1311 of emulsification pump prepares pipeline input contact 14E with nanometer by pipeline and connect；
Nano-fluid preparation regeneration 1300 outlet 1312 of emulsification pump prepares pipeline output contact 14A with nanometer by pipeline and connect；Paddy
1410 suction inlet 1411 of defrosting circulating pump level pressure module of electric speed heat piecemeal haze constant pressure arrangement 1400 white clearly passes through pipeline and defrosting
Pipeline inputs contact 14F connection；1410 delivery outlet 1412 of defrosting circulating pump level pressure module passes through pipeline and solution paddy electricity quick heater
1420 imports 1421 connection；Solution paddy electricity quick heater 1420 outlet 1422 by pipeline through defrosting pipeline output contact 14B with melt
White module conduits import contact 14C connection；The defrosting general pipeline recycle control valve of paddy electricity speed heat piecemeal haze constant pressure arrangement 1400 white clearly
1430 outlets input contact 14F with defrosting pipeline by pipeline and connect；The fluid of the source nano-fluid driving circulatory system 1500
Driving circulation 1510 import 1511 of pump group is connect by pipeline and source tie-in point 15D, source tie-in point 15C, source pipeline
Point 15B connection；Fluid driving circulation pump group 1510 outlet 1511 passes through pipeline and source tie-in point 15E, source tie-in point
15H connection；Source tie-in point 15F is connect by pipeline with source tie-in point 15A；Source tie-in point 15H, source pipeline
Contact 15F passes through pipeline respectively and connect with super low temperature heat pump paddy electricity superposition heating system 2.
The source vapor suspension condensation heat source 1100 includes bottom boom frame maintenance and support 1110, top maintenance truss 1120, V-type
The efficiently wide fin tube surface cooler 1150 of symmetrical enclosure board 1130, B/P EGR Back Pressure Transducer EGR 1140, V-type nano hydrophobic, the pneumatic dress of high static pressure
Set 1160, efficiently wide 1150 bottom of fin tube surface cooler of V-type nano hydrophobic supports by bottom boom frame maintenance and support 1110, top with it is upper
Safeguard that truss 1120 is fixed in portion；The efficiently wide 1150 middle part avris of fin tube surface cooler of V-type nano hydrophobic is by the symmetrical enclosure board of V-type
1130 are connected and fixed；Symmetrical 1130 side of enclosure board of V-type is equipped with B/P EGR Back Pressure Transducer EGR 1140；Safeguard that truss 1120 is installed above in top
There is high static pressure aerophor 1160.
Super low temperature heat pump paddy electricity superposition heating system 2 constitute include ultralow temperature heat source module compensation compressor 2100,
Gravity silk screen oil eliminator 2200, liquid leaching multipaths countercurrent evaporation device 2300, level-one economizer supercooling apparatus 2400, second level supercooling
Heat power oil return apparatus 2500, hydraulic-control throttling device 2600 are superimposed ultralow temperature heating compensation device for reheater condenser 2700, paddy electricity
2800 and load side recycle pump group 2900；Ultralow temperature heat source module compensation 2100 air inlet 2110 of compressor is passed through by pipeline
Multimode return-air threeway 21A, heat power oil return return-air threeway 21B, return-air degree of superheat oil cooler 2170 and liquid leaching multipaths are inverse
The connection of 2300 gas returning port 2312 of flow evaporator device；Ultralow temperature heat source module compensates 2100 exhaust outlet 2120 of compressor by pipeline through more
Module blow-off tee 21H is connect with 2200 air inlet 2210 of gravity silk screen oil eliminator；Gravity silk screen oil eliminator 2200 is vented
Mouth 2220 is connect by pipeline with for 2700 air inlet 2711 of reheater condenser；2200 oil extraction control mouth of gravity silk screen oil eliminator
2230, which compensate 2100 repairing mouth 2140 of compressor with ultralow temperature heat source module through oil return threeway 21E by pipeline, connect；Ultralow temperature
Heat source module compensates the cold outlet 2150 of 2100 oil of compressor and is passed through and return-air degree of superheat oil cooler by pipeline, the cold threeway 21D of oil
(the 2170 cold import 217A connections of oil；The ultralow temperature heat source module compensation oil of compressor 2100 is cold to answer back 2160 by pipeline warp, oily cold
Threeway 21C is connect with the 2170 cold outlet 217B of oil of return-air degree of superheat oil cooler；Oil temperature regulating valve 217C is connected across the cold import of oil
Between 217A and the cold outlet 217B of oil；Liquid soaks 2300 inlet 2311 of multipaths countercurrent evaporation device and is filled by pipeline and hydraulic-control throttling
Set the connection of 2600 liquid outlets 2620；Heat power oil return dress is subcooled by pipeline and second level in 2600 inlet 2610 of hydraulic-control throttling device
Set the connection of 2500 liquid outlets 2520；2500 inlet 2510 of heat power oil return apparatus is subcooled by pipeline through liquid stream threeway in second level
24X is connect with 2400 liquid outlet 2420 of level-one economizer supercooling apparatus；2500 liquid oil inlet of heat power oil return apparatus is subcooled in second level
2530 are connect by pipeline with multichannel oil return pipe 2330；2500 low pressure of heat power oil return apparatus evaporation outlet 2540 is subcooled in second level
It is connect by pipeline with heat power oil return return-air threeway 21B；Level-one economizer supercooling apparatus 2400 is subcooled inlet 2440 and passes through
Pipeline and the outlet of throttling valve group 2430 connect；Throttling 2430 import of valve group is connect by pipeline with liquid stream threeway 24X；Level-one economy
Pressure evaporation outlet 2450 compensates compressor by pressure threeway 21F in pipeline warp and ultralow temperature heat source module in device supercooling apparatus 2400
Mouth 2130 is crimped in 2100 to connect；Pass through pipeline and level-one economizer supercooling apparatus 2400 for 2700 liquid outlet 2712 of reheater condenser
Liquid-inlet 2410 connects；Ultralow temperature heating compensation device is superimposed with paddy electricity by pipeline for 2700 hot water outlet 2732 of reheater condenser
The connection of 2800 water inlets 2811；Paddy electricity is superimposed 2800 water outlet 2812 of ultralow temperature heating compensation device and is supplied water by pipeline and load side
Interface 28A connection；Load side return water interface 28B is followed by the expanded level pressure threeway 29X of pipeline, return water threeway 29A and load side
The connection of 2900 suction inlet 2911 of ring pump group；Load side recycles pump group 2900 and extrudes mouth 2912 by pipeline and for reheater condenser 2700
Hot water is answered back 2731 connections；Load side level pressure expansion device 2920 is connect by pipeline with expansion level pressure threeway 29X；Liquid soaks multithread
The 2300 tube side source liquid import 2351 of journey countercurrent evaporation device is connect by pipeline with source tie-in point 15H；Liquid soaks multipaths adverse current
2300 tube side cold liquid outlet 2352 of evaporator is connect by pipeline with source tie-in point 15F.
Liquid leaching 2300 enclosure interior of multipaths countercurrent evaporation device is respectively disposed with lower homogenizing plate 2321, leaching from the bottom to top
Steep vertical setting of types evaporation tube bundle 2322, vacuole absorbs tube bundle 2323, aerosol absorbs frost prevention tube bundle 2324, upper homogenizing plate 2325.
Liquid soaks 2300 hull outside side center of multipaths countercurrent evaporation device and low pressure working fluid fluid level controller is housed
2340；For 2700 enclosure interior of reheater condenser equipped with condensation shell side tube bundle 2720.
The beneficial effects of the invention are as follows：With high conduction heat transfer characteristic, clammy heat source renewable energy is absorbed, realizes clammy heat
The frostless efficient utilization for taking heat absorption is avenged in source suspension phase transformation.System by multi-joint invariable frequency compressor module for compensating, meet -15 DEG C with
Under to ultra-low temperature surroundings compressor attenuation compensation, cold snap thermoelectricity co-generating heat supplying and electric power output increase, starting paddy electricity superposition
It is insufficient that thermal compensates cold snap heat pump heat supply.System draws peak to Atmospheric Transportation low temperature cold air-flow simultaneously and drives haze, realizes artificial
Cold source controls the economy and social benefit of haze.
Detailed description of the invention
Fig. 1 is systematic schematic diagram of the invention；
Explanation：Hollow arrow indicates air-flow direction in figure, and filled arrows indicate circulatory mediator, water circulation flow direction.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
Referring to attached drawing, the present invention absorbs heat source system 1 by the condensation nano fluid that suspends and super low temperature heat pump paddy electricity is superimposed heat supply
System 2 forms.
It includes source vapor suspension condensation heat source tower 1100, nanometer that the suspension condensation nano fluid, which absorbs heat source system 1 and constitutes,
Fluid formulation stirs expansion tank 1200, nano-fluid preparation regeneration emulsification pump 1300.Paddy electricity speed heat piecemeal haze constant pressure arrangement white clearly
1400, source nano-fluid drives the circulatory system 1500.
The source vapor suspends condensation heat source tower 1100V type nano hydrophobic efficiently wide 1150 bottom of fin tube surface cooler the bottom of by
The support of truss maintenance and support 1110, top and top maintenance truss 1120 are fixed；The efficiently wide fin tube surface cooler of V-type nano hydrophobic
1150 middle part avris are connected and fixed by the symmetrical enclosure board 1130 of V-type；Symmetrical 1130 side of enclosure board of V-type is equipped with B/P EGR Back Pressure Transducer EGR
1140；Top maintenance truss 1120 is equipped with high static pressure aerophor 1160 above；The efficiently wide finned tube table of V-type nano hydrophobic is cold
1150 import 1151 of device is connect with the outlet of module defrosting check valve 1440, source tie-in point 15A respectively by valve and pipeline；
1440 import of module defrosting check valve is connect by pipeline with defrosting module conduits import contact 14C；V-type nano hydrophobic is efficiently wide
The outlet of fin tube surface cooler 1,150 1152 is connect with 1450 import of module defrosting control valve, source pipeline respectively by valve and pipeline
Point 15B connection；The outlet of module defrosting control valve 1450 is connect by pipeline with source tie-in point 15B；Surface air cooler exhaust valve
1153, which prepare stirring 1200 liquid return hole contact 1230 of expansion tank with nano-fluid by pipeline, connect；It is swollen that nano-fluid prepares stirring
1200 liquid outlet 1220 of swell prepares pipeline input contact 14E with nanometer and connect；Nano-fluid is prepared stirring expansion tank 1200 and is pushed up
Portion and side are respectively provided with solution stirrer 1240, gravity meter 1250, solution and blend feed inlet 1260, softening water inlet
1210；Nano-fluid prepare stirring 1200 liquid return hole contact 1230 of expansion tank by pipeline respectively with relief valve 1460, return hydraulic control
1442 connection of system expansion valve group 1440 outlet；Return hydraulic control expands 1440 import 1441 of valve group and passes through pipeline and source tie-in point
15C connection；Nano-fluid preparation regeneration 1300 suction inlet 1311 of emulsification pump prepares pipeline by pipeline and nanometer and inputs contact 14E
Connection；Nano-fluid preparation regeneration 1300 outlet 1312 of emulsification pump prepares pipeline output contact 14A by pipeline and nanometer and connects
It connects；Paddy electricity speed heat piecemeal 1400 defrosting circulating pump level pressure module of white haze constant pressure arrangement, 1410 suction inlet 1411 clearly passes through pipeline and melts
White pipeline inputs contact 14F connection；1410 delivery outlet 1412 of defrosting circulating pump level pressure module passes through pipeline and solution paddy electricity speed heat
1420 import 1421 of device connection；Solution paddy electricity quick heater 1420 outlet 1422 by pipeline through defrosting pipeline output contact 14B with
Defrosting module conduits import contact 14C connection；The outlet of defrosting general pipeline recycle control valve 1430 is inputted by pipeline and defrosting pipeline
Contact 14F connection；Driving 1500 fluid of circulatory system driving circulation 1510 import 1511 of pump group of source nano-fluid passes through pipeline
It is connect with source tie-in point 15D, source tie-in point 15C, source tie-in point 15B；Fluid driving circulation pump group 1510 goes out
Mouth 1511 is connect by pipeline with source tie-in point 15E, source tie-in point 15H；Source tie-in point 15F by pipeline with
The 15A connection of source tie-in point.
It includes that ultralow temperature heat source module compensates compressor 2100 that the super low temperature heat pump paddy electricity superposition heating system 2, which is constituted,
Gravity silk screen oil eliminator 2200, liquid soak multipaths countercurrent evaporation device 2300, level-one economizer supercooling apparatus 2400, second level supercooling
Heat power oil return apparatus 2500, hydraulic-control throttling device 2600, for reheater condenser 2700, paddy electricity is superimposed ultralow temperature heating compensation device
2800, load side recycles pump group 2900.
Ultralow temperature heat source module compensation 2100 air inlet 2110 of compressor is by pipeline through multimode return-air threeway
21A, heat power oil return return-air threeway 21B, return-air degree of superheat oil cooler (2170) and liquid soak multipaths countercurrent evaporation device 2300
Gas returning port 2312 connects；Ultralow temperature heat source module compensates 2100 exhaust outlet 2120 of compressor by pipeline through multimode blow-off tee
21H is connect with 2200 air inlet 2210 of gravity silk screen oil eliminator；2200 exhaust outlet 2220 of gravity silk screen oil eliminator passes through pipe
Road is connect with for 2700 air inlet 2711 of reheater condenser；2200 oil extraction control mouth 2230 of gravity silk screen oil eliminator is passed through by pipeline
Oil return threeway 21E is connect with ultralow temperature heat source module compensation 2100 repairing mouth 2140 of compressor；Ultralow temperature heat source module compensation pressure
The cold outlet 2150 of 2100 oil of contracting machine is passed through and the 2170 cold import of oil of return-air degree of superheat oil cooler by pipeline, the cold threeway 21D of oil
217A connection；Ultralow temperature heat source module compensation 2100 oil of compressor are cold to answer back 2160 by pipeline warp, the cold threeway 21C of oil and return-air
The 2170 cold outlet 217B connection of oil of degree of superheat oil cooler；Oil temperature regulating valve 217C is connected across the cold import 217A of oil and the cold outlet of oil
Between 217B；Liquid soaks 2300 inlet 2311 of multipaths countercurrent evaporation device and passes through pipeline and 2600 liquid outlet of hydraulic-control throttling device
2620 connections；2500 liquid outlet of heat power oil return apparatus is subcooled by pipeline and second level in 2600 inlet 2610 of hydraulic-control throttling device
2520 connections；2500 inlet 2510 of heat power oil return apparatus is subcooled by pipeline through liquid stream threeway 24X and level-one economy in second level
The connection of 2400 liquid outlet 2420 of device supercooling apparatus；Second level be subcooled 2500 liquid oil inlet 2530 of heat power oil return apparatus by pipeline with
Multichannel oil return pipe 2330 connects；It is dynamic by pipeline and heat that 2500 low pressure of heat power oil return apparatus evaporation outlet 2540 is subcooled in second level
Power oil return return-air threeway 21B connection；Level-one economizer supercooling apparatus 2400 is subcooled inlet 2440 and passes through pipeline and throttling valve group
2430 outlet connections；Throttling 2430 import of valve group is connect by pipeline with liquid stream threeway 24X；Level-one economizer supercooling apparatus 2400
Middle pressure evaporation outlet 2450 is compensated in compressor 2100 with ultralow temperature heat source module by pressure threeway 21F in pipeline warp and crimps mouth
2130 connections；Pass through pipeline and 2400 liquid-inlet 2410 of level-one economizer supercooling apparatus for 2700 liquid outlet 2712 of reheater condenser
Connection；2800 water inlet of ultralow temperature heating compensation device is superimposed with paddy electricity by pipeline for 2700 hot water outlet 2732 of reheater condenser
2811 connections；Paddy electricity is superimposed 2800 water outlet 2812 of ultralow temperature heating compensation device and is connected by pipeline and load side water supply interface 28A
It connects；Load side return water interface 28B recycles pump group 2910 by the expanded level pressure threeway 29X of pipeline, return water threeway 29A and load side
Suction inlet 2911 connects；Load side circulation pump group 2910 extrudes mouth 2912 and is answered back by pipeline with for 2700 hot water of reheater condenser
2731 connections；Load side level pressure expansion device 2920 is connect by pipeline with expansion level pressure threeway 29X；Liquid soaks multipaths adverse current and steams
Hair 2300 tube side source liquid import 2351 of device is connect by pipeline with source tie-in point 15H；Liquid soaks multipaths countercurrent evaporation device
2300 tube side cold liquid outlets 2352 are connect by pipeline with source tie-in point 15F；Liquid soaks 2300 shell of multipaths countercurrent evaporation device
Internal portion is respectively disposed with lower homogenizing plate 2321 from the bottom to top, impregnates vertical setting of types evaporation tube bundle 2322, vacuole absorption tube bundle 2323, gas
Mist absorbs frost prevention tube bundle 2324, upper homogenizing plate 2325；Liquid soaks 2300 hull outside side center of multipaths countercurrent evaporation device
Equipped with low pressure working fluid fluid level controller 2340；For 2700 enclosure interior of reheater condenser equipped with condensation shell side tube bundle 2720.
The condensation nano fluid that suspends absorbs 1 technical principle of heat source system and working principle:
Conventional air source heat pump technology utilizes the low area structure of narrow finned tube, with low pressure working fluid expansion humid gas in narrow finned tube
Steam low level heat source in air is absorbed, narrow finned tube frosting, poor heat transfer is average at 15 DEG C or more between air and working medium, and heat pump supplies
Hot property is low.The following derivation technology absorbs steam low level heat source in air with external salting liquid, aeration cycle
It being promoted by the water resource heat pump of traditional low performance, causes dilute solution exhaust emission water body, air is polluted in the drift of air circulation salt fog,
Salting liquid evaporation endothermic heat source temperature is low, and heat pump heat supply performance is low.
Using the small different transfer of heat structure design of the high area broadband sheet finned tube of modular combination, collection solution constant pressure cycle, expansion
Pressure release, nano-fluid preparation regeneration cycle set as one for multifunctional assembling, with the circular flow turbulent flow velocity on 10 times in wide wing
Nano-fluid built in piece pipe is absorbed from steam low level heat source in air, and reducing finned tube frosting probability is more than 98% or more, empty
Temperature heat transfer difference is average less than 5 DEG C between gas heat source temperature and working medium, and heat source temperature is high, and heat pump heat supply performance is high.Capital equipment dress
It is as follows to set working principle：
Source vapor, which suspends, condenses 1100 working principle of heat source tower：Clammy heat source from atmospheric environment is efficient through V-type nano hydrophobic
Low-temperature nano height built in wide fin tube surface cooler 1150 leads frozen soln and absorbs enthalpy decline）Cold air is purified as ultralow temperature,
The cold air directive that will be less than atmospheric temperature is driven to complete cold and hot exchange process in the air through high static pressure aerophor 1160.
Nano-fluid preparation stirring expansion tank 1200 and the nano-fluid preparation regeneration associated working principle of emulsification pump 1300：It receives
Rice fluid formulation stirring expansion tank 1200 blends feed inlet 1260 by solution and runs freezing point ratio and tank-volumes loading in system
The concentrated solution of metering runs freezing point ratio and tank-volumes by the softened water of the input metering of softening water inlet 1200 in system, presses
The heating conduction of design blends feed inlet 1260 by solution and nano heat-conductive material is added, and the starting stirring of solution stirrer 1240 is mixed
It closes, adjustment gravity is shown by gravity meter 1250, solution stirrer 1240 is closed after stirring is qualified, starts nanometer stream
Body preparation regeneration emulsification pump 1300, nano-fluid prepare stirring 1200 mixed solution of expansion tank and enter nanometer stream through liquid outlet 1220
The body preparation regeneration emulsification of emulsification pump 1300 is nano-fluid, prepares pipeline output contact 14A indentation source pipeline circulation through nanometer
System completes nano-fluid preparation process, and when source pipeline circulating system is out of service too long, it is outstanding to occur half for nano heat-conductive material
Floating state can start the nano-fluid preparation regeneration regeneration emulsification of emulsification pump 1300.
Paddy electricity speed heat piecemeal 1400 working principle of haze constant pressure arrangement white clearly：Source vapor suspension condensation heat source tower 1100 has
The design of clammy heat source suspension phase transformation snow is absorbed, 100% relative humidity of air negative temperature, durations are more than 12H in order to prevent,
System uses preventive measure by objective of safe and stable operation, increases paddy electricity speed heat piecemeal haze constant pressure arrangement 1400 white clearly,
Closedown module defrosting control valve 1450 opens defrosting general pipeline recycle control valve 1430, starts defrosting circulating pump level pressure module 1410
Operate normally, restart solution paddy electricity quick heater 1420 its negative temperature nanometer frozen soln heat rapidly be positive temperature freeze it is molten
Liquid enters source vapor through defrosting pipeline output contact 14B, defrosting module conduits import contact 14C, module defrosting check valve 1440
Suspend condensation 1100 heat release defrosting of heat source tower, and the decline of frozen soln temperature is answered back contact 14D, defrosting general pipeline through defrosting module conduits
Recycle control valve 1430, defrosting tie-in point 14F enter the completion modularization defrosting of defrosting circulating pump level pressure module 1410 and are circulated throughout
Journey.Defrosting circulating pump level pressure module 1410 is cut into frequency conversion state after modularization defrosting cyclic process, to source nanometer stream
Body drives the circulatory system 1500 to implement level pressure compensation, and operation or period solution expanded by heating superpressure out of service are by relief valve 1460
Pressure release is discharged into nano-fluid preparation stirring 1200 liquid return hole contact 1230 of expansion tank and avoids solution loss.
Source nano-fluid drives 1500 working principle of the circulatory system：Heating system 2 is superimposed from super low temperature heat pump paddy electricity
Liquid soaks 2300 tube side cold liquid outlet of multipaths countercurrent evaporation device, 2352 cryogenic freezing nano-fluid, through source tie-in point 15F, source
Side ducts contact 15A, the efficiently wide absorption of fin tube surface cooler 1150 of source vapor suspension condensation 1100 nano hydrophobic of heat source tower come from
The clammy heat source of atmospheric environment is put, cryogenic freezing nano-fluid temperature rises, connects through module defrosting control valve 1450, source pipeline
Point 15B, source tie-in point 15D enter the fluid driving circulation driving pressurization of pump group 1510, through source tie-in point 15E, source
Tie-in point 15H enter super low temperature heat pump paddy electricity superposition 2 liquid of heating system soak 2300 tube side source liquid of multipaths countercurrent evaporation device into
Mouth 2351 enters liquid leaching 2300 tube side of multipaths countercurrent evaporation device and discharges low temperature position energy.
Super low temperature heat pump paddy electricity is superimposed 2 technical principle of heating system and working principle:
Traditional water source heat pump technology absorbs low level heat source using two process evaporators, and heat transfer efficiency only has the 50% of air conditioning condition,
The unit evaporator liquid in-out temperature difference generally only has 2 degree, and excessive unsaturation humid gas, which enters heat pump compressor, to be continued to absorb heat, and causes to press
Contracting machine frosting is serious, and evaporating pressure is higher, causes circulating frozen solution to go out liquid temperature height and difference in air temperature reduction, absorbs low temperature
Position heat source scarce capacity becomes art technology problem.
Under low level heat source operating condition, the source circulatory system is micro- logical using efficient nano fluid circulation medium progress multipaths
Road heat transfer is subcooled to absorb using level-one economizer and presses increasing enthalpy compensation in progress, and second level micro channel heat power foam oil return siphon is returned
Gas simultaneously worker quality liquid after cold）Multinomial technical application ensures the evaporation of refrigeration working medium low pressure sufficiently, and boil-off gas return-air is full
And state, compressor operation friction temperature calorific value are enough to offset low-temperature evaporation gas saturation return-air to compressor and freeze oil temperature
Reduced influence, and the cooling load heating of oil is carried out to low pressure return-air, guarantee that compressor low-pressure area component lubrication oil film is formed surely
It is fixed, it is mainly shown as that frost-free state, the big acquisition low temperature of the unit evaporator liquid in-out temperature difference is presented in the low compressor of evaporating pressure
Position energy is more, realizes compressor with a small amount of electrical energy drive, and frozen soln goes out that liquid temperature is low to be increased with difference in air temperature, absorbs low
Potential temperature heat source ability increases, and working principle is as follows：
From source vapor suspend condensation 1100 nano-fluid low level heat source of heat source tower through source tie-in point 15H enter liquid leaching it is more
2300 tube side of process countercurrent evaporation device discharges low temperature position energy.Liquid soaks 2300 enclosure interior of multipaths countercurrent evaporation device and impregnates vertical setting of types steaming
2322 shell side low pressure working fluid liquid of tube bundle heat absorption evaporation → vacuole absorption 2323 shell side of tube bundle is sent out to absorb removing vacuole → aerosol and inhale
Receiving 2324 shell side microchannel of frost prevention tube bundle to absorb low pressure working fluid unsaturation gas is low pressure working fluid saturated gas, into ultralow warm
Source module compensates 2100 air entry 2110 of compressor, working medium high pressure superheater gas is promoted to through compressor work, by exhaust outlet
2120 enter 2200 air inlet 2210 of gravity silk screen oil eliminator, and working medium high pressure superheater gas isolates mist of oil deposition in oil
In container bottom intermittent oil returning, working medium high pressure superheater gas enters through gas outlet 2220 for 2700 scull journey tube bundle of reheater condenser
2720 release high-temperature position energy latent heat are condensed into high-pressure working medium liquid, and into level-one economizer supercooling apparatus 2400, high-pressure working medium is full
The property for realizing Gas-supplying enthalpy-increasing is sucked by compressor intermediary interface with liquid release sensible heat temperature decline cooling during rolling boil-off gas
Energy）, refrigerant vacuole entrained by second level supercooling 2500 absorption multichannel oil return pipe 2330 of heat power oil return apparatus is entered back into, is steamed
Body of getting angry by return-air siphon threeway 21B enters compressor, and high-pressure working medium saturated liquid is lower by secondary supercooling evaporating temperature, by
After second level supercooling 2500 interface 2520 of heat power oil return apparatus enters 2600 reducing pressure by regulating flow of hydraulic-control throttling device, low pressure working fluid liquid
Refrigeration working medium is completed against Carnot cycle into liquid leaching 2300 enclosure interior multipaths of multipaths countercurrent evaporation device evaporation tube bundle.Return-air
Degree of superheat oil cooler 2170 acts on, and improves return-air degree of superheat stable operation oil film, reduces running resistance energy consumption.For reheater condenser
The condensation latent heat of 2700 heating cycle Absorption of Medium shell side tube bundle high-pressure working medium gas release, heating cycle medium temperature rise
Determined whether to be superimposed heat supply using paddy electricity according to weather conditions heating demand through paddy electricity superposition ultralow temperature heating compensation device 2800）
Through load side water supply interface 28A to load side ot the system release high-temperature position heat generating temperature decline, enter through load side return water interface 28B
Load side recycles the driving pressurization of pump group 2910, into for 2700 cyclic absorption high-temperature position thermal energy of reheater condenser.
Claims (5)
- The condensation heat source tower heat pump heat supply station 1. a kind of steam suspends, it is characterized in that：It includes the condensation nano fluid absorption heat source that suspends System (1) and super low temperature heat pump paddy electricity superposition heating system (2), the suspension condensation nano fluid absorb heat source system (1) and include Stirring expansion tank (1200) is prepared in source vapor suspension condensation heat source tower (1100), nano-fluid, nano-fluid preparation regenerates emulsification Pump (1300), paddy electricity speed heat piecemeal haze constant pressure arrangement (1400) white clearly and the source nano-fluid driving circulatory system (1500), water Vapour source suspension condensation heat source tower (1100) is clear with source tie-in point (15A), paddy electricity speed heat piecemeal respectively by valve and pipeline Module defrosting check valve (1440) in white haze constant pressure arrangement (1400) exports connection；Module defrosting check valve (1440) import is logical Piping is connect with defrosting module conduits import contact (14C)；V-type nanometer in source vapor suspension condensation heat source tower (1100) Hydrophobic efficiently wide fin tube surface cooler (1150) outlet (1152) by valve and pipeline respectively with source tie-in point (15B), Module defrosting control valve (1450) import connection in paddy electricity speed heat piecemeal haze constant pressure arrangement (1400) white clearly；Module defrosting control Valve (1450) outlet is connect by pipeline with source tie-in point (15B)；The table of source vapor suspension condensation heat source tower (1100) is cold Device exhaust valve (1153) is prepared stirring expansion tank (1200) liquid return hole contact (1230) with nano-fluid by pipeline and is connect；Nanometer Fluid formulation stirring expansion tank (1200) liquid outlet (1220) prepares pipeline input contact (14E) with nanometer and connect；Nano-fluid It prepares at the top of stirring expansion tank (1200) and side is respectively provided with solution stirrer (1240), gravity meter (1250), solution Blend feed inlet (1260), softening water inlet (1210)；Nano-fluid prepares stirring expansion tank (1200) liquid return hole contact (1230) by pipeline respectively with the relief valve (1460) in paddy electricity speed heat piecemeal haze constant pressure arrangement (1400) white clearly, return hydraulic control Expand valve group (1440) outlet (1442) connection；Return hydraulic control expands valve group (1440) import (1441) and passes through pipeline and source pipe Road contact (15C) connection；Nano-fluid preparation regeneration emulsification pump (1300) suction inlet (1311) is managed by pipeline and nanometer preparation Road inputs contact (14E) connection；Nano-fluid preparation regeneration emulsification pump (1300) outlet (1312) passes through pipeline and nanometer system Standby pipeline output contact (14A) is connected；The defrosting circulating pump level pressure module of paddy electricity speed heat piecemeal haze constant pressure arrangement (1400) white clearly (1410) suction inlet (1411) is connect by pipeline with defrosting pipeline input contact (14F)；Defrosting circulating pump level pressure module (1410) delivery outlet (1412) is connect by pipeline with solution paddy electricity quick heater (1420) import (1421)；Solution paddy electricity quick heater (1420) outlet (1422) is connected by pipeline through defrosting pipeline output contact (14B) and defrosting module conduits import contact (14C) It connects；Defrosting general pipeline recycle control valve (1430) outlet of paddy electricity speed heat piecemeal haze constant pressure arrangement (1400) white clearly passes through pipeline and melts White pipeline input contact (14F) connection；Source nano-fluid drives the fluid driving circulation pump group of the circulatory system (1500) (1510) import (1511) passes through pipeline and source tie-in point (15D), source tie-in point (15C), source tie-in point (15B) connection；Fluid driving circulation pump group (1510) outlet (1511) passes through pipeline and source tie-in point (15E), source pipe Road contact (15H) connection；Source tie-in point (15F) is connect by pipeline with source tie-in point (15A)；Source tie-in point (15H), source tie-in point (15F) are connect by pipeline with super low temperature heat pump paddy electricity superposition heating system (2) respectively.
- The condensation heat source tower heat pump heat supply station 2. steam according to claim 1 suspends, it is characterized in that：The source vapor suspends Condensation heat source tower (1100) includes bottom boom frame maintenance and support (1110), top maintenance truss (1120), the symmetrical enclosure board of V-type (1130), the efficiently wide fin tube surface cooler (1150) of B/P EGR Back Pressure Transducer EGR (1140), V-type nano hydrophobic, high static pressure aerophor (1160), efficiently wide fin tube surface cooler (1150) bottom of V-type nano hydrophobic is by bottom boom frame maintenance and support (1110) support, top It is fixed with top maintenance truss (1120)；Avris is symmetrical by V-type in the middle part of the efficiently wide fin tube surface cooler (1150) of V-type nano hydrophobic Enclosure board (1130) is connected and fixed；The symmetrical enclosure board of V-type (1130) side is equipped with B/P EGR Back Pressure Transducer EGR (1140)；Safeguard truss in top (1120) high static pressure aerophor (1160) are installed above.
- The condensation heat source tower heat pump heat supply station 3. steam according to claim 1 suspends, it is characterized in that：The super low temperature heat pump It includes that ultralow temperature heat source module compensates compressor (2100), gravity silk screen oil eliminator that paddy electricity, which is superimposed heating system (2) and constitutes, (2200), heat power oil return is subcooled in liquid leaching multipaths countercurrent evaporation device (2300), level-one economizer supercooling apparatus (2400), second level Device (2500), hydraulic-control throttling device (2600) are superimposed ultralow temperature heating compensation device (2800) for reheater condenser (2700), paddy electricity Pump group (2900) are recycled with load side；Ultralow temperature heat source module compensation compressor (2100) air inlet (2110) passes through pipeline It is soaked through multimode return-air threeway (21A), heat power oil return return-air threeway (21B), return-air degree of superheat oil cooler (2170) and liquid Multipaths countercurrent evaporation device (2300) gas returning port (2312) connection；Ultralow temperature heat source module compensates compressor (2100) exhaust outlet (2120) it is connect through multimode blow-off tee (21H) with gravity silk screen oil eliminator (2200) air inlet (2210) by pipeline； Gravity silk screen oil eliminator (2200) exhaust outlet (2220) is connect by pipeline with for reheater condenser (2700) air inlet (2711)； Gravity silk screen oil eliminator (2200) oil extraction control mouth (2230) is by pipeline through oil return threeway (21E) and ultralow temperature heat source module Compensate compressor (2100) repairing mouth (2140) connection；Ultralow temperature heat source module compensates the cold outlet (2150) of compressor (2100) oil It is passed through by pipeline, the cold threeway 21D of oil and is connect with the cold import (217A) of return-air degree of superheat oil cooler (2170) oil；Ultralow temperature-heat-source Cold answer back (2160) of module for compensating compressor (2100) oil pass through pipeline warp, the cold threeway 21C of oil and return-air degree of superheat oil cooler (2170) cold outlet (217B) connection of oil；Oil temperature regulating valve (217C) is connected across the cold import (217A) of oil and the cold outlet (217B) of oil Between；Liquid leaching multipaths countercurrent evaporation device (2300) inlet (2311) goes out liquid by pipeline and hydraulic-control throttling device (2600) Mouth (2620) connection；Heat power oil return apparatus is subcooled by pipeline and second level in hydraulic-control throttling device (2600) inlet (2610) (2500) liquid outlet (2520) connects；Heat power oil return apparatus (2500) inlet (2510) are subcooled by pipeline through liquid stream in second level Threeway (24X) is connect with level-one economizer supercooling apparatus (2400) liquid outlet (2420)；Heat power oil return apparatus is subcooled in second level (2500) liquid oil inlet (2530) is connect by pipeline with multichannel oil return pipe (2330)；Heat power oil return apparatus is subcooled in second level (2500) low pressure evaporation outlet (2540) is connect by pipeline with heat power oil return return-air threeway (21B)；The supercooling of level-one economizer Device (2400) is subcooled inlet (2440) and is connected by pipeline and throttling valve group (2430) outlet；Throttle valve group (2430) import It is connect by pipeline with liquid stream threeway (24X)；Pressure evaporation outlet (2450) passes through pipe in level-one economizer supercooling apparatus (2400) Lu Jingzhong presses threeway (21F) to connect with crimping mouth (2130) in ultralow temperature heat source module compensation compressor (2100)；Heat supply condensation Device (2700) liquid outlet (2712) is connect by pipeline with level-one economizer supercooling apparatus (2400) liquid-inlet (2410)；Heat supply Condenser (2700) hot water outlet (2732) is superimposed ultralow temperature heating compensation device (2800) water inlet with paddy electricity by pipeline (2811) it connects；Paddy electricity is superimposed ultralow temperature heating compensation device (2800) water outlet (2812) and passes through pipeline and load side water supply interface (28A) connection；Load side return water interface (28B) passes through the expanded level pressure threeway (29X) of pipeline, return water threeway (29A) and load Side recycles pump group (2900) suction inlet (2911) connection；Load side recycles pump group (2900) and extrudes mouth (2912) by pipeline and supply Reheater condenser (2700) hot water answer back (2731) connection；Load side level pressure expansion device (2920) passes through pipeline and expansion level pressure three Logical (29X) connection；Liquid leaching multipaths countercurrent evaporation device (2300) tube side source liquid import (2351) is connect by pipeline and source pipeline Point (15H) connection；Liquid leaching multipaths countercurrent evaporation device (2300) tube side cold liquid outlet (2352) is connect by pipeline and source pipeline Point (15F) connection.
- The condensation heat source tower heat pump heat supply station 4. steam according to claim 3 suspends, it is characterized in that：The liquid soaks multipaths Countercurrent evaporation device (2300) enclosure interior is respectively disposed with lower homogenizing plate (2321) from the bottom to top, impregnates vertical setting of types evaporation tube bundle (2322), vacuole absorbs tube bundle (2323), aerosol absorbs frost prevention tube bundle (2324), upper homogenizing plate (2325).
- The condensation heat source tower heat pump heat supply station 5. steam according to claim 3 suspends, it is characterized in that：Liquid soaks multipaths adverse current Evaporator (2300) hull outside side center is equipped with low pressure working fluid fluid level controller (2340)；For reheater condenser (2700) Enclosure interior is equipped with condensation shell side tube bundle (2720).
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| CN108870511B (en) | 2023-12-19 |
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