CN105318590A - Flash gravity difference low heat source heat pump - Google Patents

Flash gravity difference low heat source heat pump Download PDF

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Publication number
CN105318590A
CN105318590A CN201410343717.6A CN201410343717A CN105318590A CN 105318590 A CN105318590 A CN 105318590A CN 201410343717 A CN201410343717 A CN 201410343717A CN 105318590 A CN105318590 A CN 105318590A
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China
Prior art keywords
tube
heat
flash distillation
working medium
low
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CN201410343717.6A
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Chinese (zh)
Inventor
刘秋克
吴卫平
成剑林
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刘秋克
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Priority to CN201410343717.6A priority Critical patent/CN105318590A/en
Publication of CN105318590A publication Critical patent/CN105318590A/en

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Abstract

The invention relates to a flash working medium pump low heat source heat pump which aims at achieving matching with hot pump system equipment of a negative-temperature low-temperature level heat source open heat source tower and improving the heat transmission efficiency of a heat exchanger and the anti-frost property through the technological process of power circulation working medium evaporating liquid running in a tube pass of a circulation evaporator of a tube pass working medium liquid pump and circulation medium running in a shell pass. Compared with conventional direct expansion drying type vapor and liquid fluid evaporation, the heat exchange performance can be improved by 40%; a multi-module compressor is arranged according to the low temperature working condition of minus 25 DEG C, and thus it is ensured that the heat exchange area of the heat exchanger under the low heat source working condition is fully utilized; by means of a gulp valve of a low-pressure protection device and a low-temperature frozen-machine ice melting device in the protection technological measures, faults can be effectively and quickly eliminated in the state that a heat pump unit runs abnormally, the normal running of the heat pump unit is guaranteed, the economical efficiency of using a low-temperature level heat source in heat supply of heat pumps is improved, heat is obtained, and meanwhile haze air is purified, and fossil energy is replaced.

Description

Flash distillation gravitational difference low heat heat pump
Technical field
The flash distillation gravitational difference low heat heat pump that type of the present invention relates to relates to the large field of China's new energy source energy-saving technology, environmental protection and resource two.
Flash distillation gravitational difference low heat heat pump, will replace conventional inefficiencies dry type heat of evaporation pump assembly tube side/shell side vapour-liquid and be evaporated to high efficiency flash gravitational difference circulation tube side/shell side liquid-liquid evaporation heat transfer.The shell side of contrast application at present walks working medium; the protective value that tube side walks medium (water body) full-liquid type heat pump, falling film type heat pump has higher good low pressure tonifying Qi, ice-melt is thawed; heat source side circulatory mediator can not occur because of the not enough frost heave heat exchanger tube of concentration causes unit to damage phenomenon; be applicable to apply more open type heat source tower heat pump system; flash distillation gravitational difference circulation tube side/shell side liquid-liquid evaporation efficiency improves the economy reducing poor heat transfer raising heat pump heat supply use low level heat source inside and outside heat exchanger tube, purifies haze air and substitute fossil energy while heat-obtaining.
Background technology
Along with the raising of people's living standard, the requirement of people to architectural environment is also more and more higher.Various refrigeration air-conditioner ventilates and heat supply process is promoted use day by day under construction, at current energy-saving low-carbon, reduce haze weather, under creating the large form of ecocity, green ecological district, green low-carbon building, the low-carbon environment-friendly energy-saving heating mode that heat source tower is originated as heat pump cold (heat) source, plays key player in the development of people's productive life.But in longtime running project investigation display:
Open type heat source tower utilizes the freezing salting liquid of external cheapness directly to form liquid film absorption from the clammy thermal source in haze air at filling surface winter in south, the latent heat resource energy that in circulating air, water capacity is relative greatly enriches.But the condensation moisture of frozen soln in the simultaneously stability air obtaining energy, frozen soln is analysed wet dilution phenomenon and is seriously caused solution concentration freezing point to rise, and often occurs once control the heat pump full-liquid type unit evaporimeter tube side heat exchanger tube frost heave damage phenomenon that easily causes not in place.Thus solve and improve open type heat source tower heat pump unit and should have better low temperature resistant anti-freezing property, become southern area and apply one of key technology of heat source tower heat pump technical substitution fossil energy.
Summary of the invention
Type flash distillation gravitational difference low heat heat pump object of the present invention, be the technological process walking gravitational difference cycle fluid evaporated liquor by tube side working medium gravity liquid evaporimeter tube side, shell side walks circulatory mediator, reach the supporting of opposite opened heat source tower heat pump system equipment, improve heat exchanger heat transfer efficiency and increase anti-freezing property; Be to be higher than tube side working medium gravity liquid evaporimeter by flash distillation feed flow back-steam separator liquid bit line, and form certain HY severe difference and overcome pipe resistance, ensure that tube side is full of liquid and improves its volatility, contrast conventional direct expansion dry type vapour-liquid two fluid evaporators can improve the heat exchange property of 30%; Be to be by ensure that tube side working medium gravity liquid evaporimeter under limit low heat operating mode-18 DEG C of air themperatures in winter (increasing compressor parallel number of units by low heat attenuation) by worst cold case configuration multimode compressor, shell side working fluid condenses device heat exchanger heat exchange area is fully used, entirety decreases source source pump configuration platform by the numbers; Be by the low-voltage protection device aeration valve in its protection technological measure, low-temperature frozen machine deicing device can discharge fault fast effectively under generation source pump abnormal operational conditions, ensures that source pump is normally run.
Economy of the present invention, reasonably to run, can solve current China heat source tower pump open cooling tower heat-obtaining, apply the fatal defects problem that tube side walks the easy frost heave of medium, flash distillation gravitational difference low heat heat pump can provide safe and reliable economy guarantee for southern area open type heat source tower heat pump technology maturation .
The technical scheme of type of the present invention is: construct 1 by flash distillation gravity differential part of appliance, inverse Carnot cycle flash distillation gravitational difference system 2, composition.
Described flash distillation gravity differential part of appliance structure 1, comprises by worst cold case module condenses machine, discharge line oil separator; shell side working fluid condenses device, working medium circulation choke valve, flash distillation feed flow back-steam separator; tube side working medium gravity liquid evaporimeter, low-voltage protection device aeration valve, low-temperature frozen machine deicing device forms.
The parallel connection of described tube side working medium gravitational difference evaporimeter, shell side working fluid condenses device is fixing, is distributed with worst cold case module condenses machine, discharge line oil separator, flash distillation feed flow back-steam separator, low-voltage protection device aeration valve above; Low-temperature frozen machine deicing device is loaded on tube side working medium gravity liquid evaporimeter shell side side medium; Flash distillation feed flow back-steam separator, except being higher than tube side working medium gravity liquid evaporimeter, also should have the severe difference HY overcoming tube side resistance.
Described inverse Carnot cycle flash distillation gravitational difference system 2, comprises by worst cold case module condenses machine, discharge line oil separator; condenser shell side working medium side; condenser tube side side medium, working medium circulation choke valve, working medium filter; separator flash distillation feed flow oil back chamber; separator back-steam liquid vapour disengagement chamber, evaporimeter tube side working medium side, evaporimeter shell side side medium; low-voltage variation making-up air device, low-temperature frozen machine deicing device forms.
Described worst cold case module condenses machine exhaust outlet valve P is connected with discharge line oil separator air inlet H1 by pipeline, discharge line oil separator gas outlet H2 is connected with condenser shell side working medium side air inlet by pipeline, discharge line oil separator oil-out H3 passes through valve, magnetic valve Y and pipeline are connected with worst cold case module condenses machine oil return valve ZV, discharge line oil separator gas outlet H4 inhales vapour collector through low-voltage protection device aeration valve with worst cold case module condenses machine by pipeline and is connected, condenser shell side working medium side liquid outlet is through working medium filter, pipeline is connected with working medium circulation choke valve entrance, the outlet of working medium circulation choke valve is connected with separator flash distillation feed flow oil back chamber low pressure throttling entrance A by pipeline, separator flash distillation feed flow oil back chamber liquid outlet B is connected with evaporimeter tube side working medium side entrance ZA by the road, evaporimeter tube side working medium side outlet ZB is connected with separator back-steam liquid vapour disengagement chamber air intake C by pipeline, separator flash distillation feed flow oil back chamber foam-like multiple spot valve oil return opening E inhales vapour collector by magnetic valve Z and pipeline with worst cold case module condenses machine and is connected, separator back-steam liquid vapour disengagement chamber venthole D inhales steam ports valve L by pipeline and worst cold case module condenses machine and is connected, condenser tube side side medium hot water outlet QY to be intake with heating demand side by Outer Tube and is connected, the condenser tube side side medium hot water QZ that answers back is connected with heating demand side backwater by Outer Tube, evaporimeter tube side side medium cryogenic media outlet ZY is connected with heat source side heat source tower inlet by Outer Tube, evaporimeter tube side side medium cryogenic media import ZW is connected with heat source side heat source tower liquid outlet by Outer Tube.
Accompanying drawing explanation
Fig. 1 is type one embodiment of the present invention " flash distillation gravitational difference low heat heat pump " system principle schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing: Fig. 1 is described further with structural representation respectively to type of the present invention " flash distillation gravitational difference low heat heat pump ".
With reference to accompanying drawing, the present embodiment comprises by flash distillation gravity differential part of appliance structure 1, and inverse Carnot cycle flash distillation gravitational difference system 2 forms.
Illustrate: figure hollow core arrow represents air, Working medium gas flow direction, filled arrows represents circulatory mediator, worker quality liquid, water circulation flow direction.
Described flash distillation gravity differential part of appliance structure 1, comprises by worst cold case module condenses machine 1.0; Discharge line oil separator 2.0; Shell side working fluid condenses device 3.0; Working medium circulation choke valve 4.0; Flash distillation feed flow back-steam separator 5.0; Tube side working medium gravity liquid evaporimeter 6.0; Low-voltage protection device aeration valve 7.0; Low-temperature frozen machine deicing device 8.0 is formed.
The parallel connection of described tube side working medium gravitational difference evaporimeter 6.0, shell side working fluid condenses device 3.0 is fixing, is distributed with worst cold case module condenses machine 1.0, discharge line oil separator 2.0, flash distillation feed flow back-steam separator 5.0, low-voltage protection device aeration valve 7.0 above; Low-temperature frozen machine deicing device 8.0 is configured on tube side working medium gravity liquid evaporimeter 6.0 shell side side medium 6.2; Flash distillation feed flow back-steam separator 5.0, except being higher than tube side working medium gravity liquid evaporimeter 6.0, also should have the severe difference HY overcoming tube side resistance.
Described inverse Carnot cycle flash distillation gravitational difference system 2, comprises by worst cold case module condenses machine 1.0; Discharge line oil separator 2.0; Condenser shell side working medium side 3.1, condenser tube side side medium 3.2; Working medium circulation choke valve 4.0, working medium filter 4.1; Separator flash distillation feed flow oil back chamber 5.1, separator back-steam liquid vapour disengagement chamber 5.2; Evaporimeter tube side working medium side 6.1, evaporimeter shell side side medium 6.2; Low-voltage variation making-up air device 7.0; Low-temperature frozen machine deicing device 8.0 is formed.
Described worst cold case module condenses machine 1.0 exhaust outlet valve P is connected with discharge line oil separator 2.0 air inlet H1 by pipeline; Discharge line oil separator 2.0 gas outlet H2 is connected with condenser shell side working medium side 3.1 air inlet by pipeline; Discharge line oil separator 2.0 oil-out H3 is connected with worst cold case module condenses machine 1.0 oil return valve ZV by valve, magnetic valve Y and pipeline; Discharge line oil separator 2.0 gas outlet H4 inhales vapour collector through low-voltage protection device aeration valve 7.0 with worst cold case module condenses machine 1.0 by pipeline and is connected; Condenser shell side working medium side 3.2 liquid outlet is connected with working medium circulation choke valve 4.0 entrance through working medium filter 4.1, pipeline; Working medium circulation choke valve 4.0 is exported and is connected with separator flash distillation feed flow oil back chamber 5.1 low pressure throttling entrance A by pipeline; Separator flash distillation feed flow oil back chamber 5.1 liquid outlet B is connected with evaporimeter tube side working medium side 6.1 entrance ZA by the road; Evaporimeter tube side working medium side 6.2 is exported ZB and is connected with separator back-steam liquid vapour disengagement chamber 5.2 air intake C by pipeline; Separator flash distillation feed flow oil back chamber 5.1 foam-like multiple spot valve oil return opening E inhales vapour collector by magnetic valve Z and pipeline with worst cold case module condenses machine 1.0 and is connected; Separator back-steam liquid vapour disengagement chamber 5.2 venthole D inhales steam ports valve L by pipeline and worst cold case module condenses machine 1.0 and is connected; Condenser tube side side medium 3.2 hot water outlet QY to be intake with heating demand side by Outer Tube and is connected, and the condenser tube side side medium 3.2 hot water QZ that answers back is connected with heating demand side backwater by Outer Tube; Evaporimeter tube side side medium 6.2 cryogenic media outlet ZY is connected with heat source side heat source tower inlet by Outer Tube, and evaporimeter tube side side medium 6.1 cryogenic media import ZW is connected with heat source side heat source tower liquid outlet by Outer Tube.
Flash distillation gravitational difference low heat heat pump operation principle.
Flash distillation gravitational difference low heat heat pump constructs 1 by flash distillation gravity differential part of appliance, and inverse Carnot cycle flash distillation gravitational difference system 2 forms.
Described flash distillation gravity differential part of appliance constructs 1 principle of work and power, sees Fig. 1.
The parallel connection of described tube side working medium gravity liquid evaporimeter 6.0, shell side working fluid condenses device 3.0 increases the stability of top equipment, becomes the support of other equipment, worst cold case module condenses machine 1.0 is the configuration of application multimode, design principle is by-18 DEG C of air themperatures in winter, heat source temperature-23 DEG C of thermal source operating modes configuration compressors (increasing compressor parallel number of units by low heat attenuation) ensure that tube side working medium gravity liquid evaporimeter 6.0 under limit low heat operating mode, shell side working fluid condenses device 3.0 heat exchanger heat exchange area is fully used, entirety decreases source source pump configuration complete machine number of units by the numbers, source source pump is by 15 DEG C of thermal source operating mode configuration compressors routinely, at heat source temperature-23 DEG C, run heat capacity about to decay 50--60%, the number of units causing source pump to configure increases more than at least one times, it is poor that flash distillation feed flow back-steam separator 5.0 flash distillation feed flow oil back chamber 5.1 liquid level line is at least higher than tube side working medium gravity liquid evaporimeter 6.0 horizontal center line more than 1000 millimeters formation HY severe, its principle overcomes pipe resistance to ensure that tube side is full of the volatility that liquid ensures its gravity force liquid-supply, and contrast conventional direct expansion dry type vapour-liquid two fluid evaporators can improve the performance of 30%, when hot pump in low temp operating mode adopts open type tower heat-obtaining to absorb the clammy thermal source in air, be there is ice clothing by dilution freezing point rising heat exchanger tube in circulating solution concentration, low-voltage protection device aeration valve 7.0 can be opened according to control overflow and carry out tonifying Qi circulation by high-pressure system to low-pressure system at any time, because solution concentration is not enough once cause working medium gravity liquid evaporimeter 6.0 tube side side medium 6.2 circulation solution to freeze heat pump protection shutdown, even if recover solution concentration to be also difficult to melt because circulation solution freezes not circulate, low-temperature frozen machine deicing device 8.0 adopts and carries out electrical heating ice-melt speed soon with heat pump compressor with power configuration, ensure that system failure recovery time shorten more than 95%.
Inverse Carnot cycle flash distillation gravitational difference system 2 system principle, is shown in Fig. 1.
Describedly inhale steam ports valve L from separator back-steam liquid vapour disengagement chamber 5.2 low pressure refrigerant vapor by worst cold case module condenses machine 1.0 and enter, be promoted to high-pressure refrigerant overheated gas through heat pump acting compression to be discharged by worst cold case module condenses machine 1.0 exhaust outlet valve P and enter discharge line oil separator 2.0 by discharge line oil separator 2.0 air inlet H1 and separate lubricating oil, lubricating oil enters worst cold case module condenses machine 1.0 oil return valve ZV complete high pressure oil return process through discharge line oil separator 2.0 oil-out H3 valve, magnetic valve Y.High-pressure refrigerant overheated gas through removing oil vapour enters condenser shell side working medium side 3.1 through discharge line oil separator 2.0 gas outlet H2, import and export QY/QZ circulatory mediator release high-temperature position heat energy to load side heat supply to condenser tube side side medium 3.2, be condensed into high pressure refrigerant liquid and enter working medium circulation choke valve 4.0 through working medium filter 4.1.High pressure refrigerant liquid is expanded to low pressure refrigerant vapour-liquid two fluids through working medium circulation choke valve 4.0 and enters separator flash distillation feed flow oil back chamber 5.1 entrance A and enter separator flash distillation feed flow oil back chamber, evaporate flash gas be cooled to cold-producing medium subcooled liquid and isolate fluid foams, low pressure refrigerant subcooled liquid enters evaporimeter tube side working medium side 6.1 through separator flash distillation feed flow oil back chamber 5.1 liquid outlet B by gravitational difference HY, absorb and import and export from evaporimeter tube side side medium 6.2 low level heat source that ZW/ZY circulatory mediator carries and be evaporated to refrigerant liquid vapour fluid-mixing, liquid enters separator flash distillation feed flow oil back chamber 5.1 by separator back-steam liquid vapour disengagement chamber 5.2 air intake C and separates liquid, liquid relies on gravitational difference effect to enter evaporimeter tube side working medium side 6.1 circulating and evaporating, the fluid foams that separator flash distillation feed flow oil back chamber 5.1 produces, through foam-like multiple spot valve oil return opening E, rely on siphon and potential difference effect to enter worst cold case module condenses machine 1.0 and inhale vapour collector and complete low pressure oil return process under magnetic valve Z tapping mode, export ZB wet steam body from evaporimeter tube side working medium side 6.1 to enter separator flash distillation feed flow oil back chamber 5.1 and remove moist steam through filtering layer S and enter separator back-steam liquid vapour disengagement chamber 5.2 and export D and enter worst cold case module condenses machine 1.0 and inhale the inverse Carnot cycle that steam ports collector completes refrigeration working medium.

Claims (3)

1. flash distillation gravitational difference low heat heat pump, it comprises by flash distillation gravity differential part of appliance structure, and inverse Carnot cycle flash distillation gravitational difference system composition, is characterized in that: flash distillation gravity differential part of appliance constructs, inverse Carnot cycle flash distillation gravitational difference system.
2. flash distillation gravitational difference low heat heat pump according to claim 1, described flash distillation gravity differential part of appliance structure, it is characterized in that: the parallel connection of tube side working medium gravitational difference evaporimeter, shell side working fluid condenses device is fixing, is distributed with worst cold case module condenses machine, discharge line oil separator, flash distillation feed flow back-steam separator, low-voltage protection device aeration valve above; Low-temperature frozen machine deicing device is loaded on tube side working medium gravity liquid evaporimeter shell side side medium; Flash distillation feed flow back-steam separator, except being higher than tube side working medium gravity liquid evaporimeter, also should have the severe difference HY overcoming tube side resistance.
3. flash distillation gravitational difference low heat heat pump according to claim 1, described inverse Carnot cycle flash distillation gravity liquid system, it is characterized in that: worst cold case module condenses machine exhaust outlet valve P is connected with discharge line oil separator air inlet H1 by pipeline, discharge line oil separator gas outlet H2 is connected with condenser shell side working medium side air inlet by pipeline, discharge line oil separator oil-out H3 passes through valve, magnetic valve Y and pipeline are connected with worst cold case module condenses machine oil return valve ZV, discharge line oil separator gas outlet H4 inhales vapour collector through low-voltage protection device aeration valve with worst cold case module condenses machine by pipeline and is connected, condenser shell side working medium side liquid outlet is through working medium filter, pipeline is connected with working medium circulation choke valve entrance, the outlet of working medium circulation choke valve is connected with separator flash distillation feed flow oil back chamber low pressure throttling entrance A by pipeline, separator flash distillation feed flow oil back chamber liquid outlet B is connected with evaporimeter tube side working medium side entrance ZA by the road, evaporimeter tube side working medium side outlet ZB is connected with separator back-steam liquid vapour disengagement chamber air intake C by pipeline, separator flash distillation feed flow oil back chamber foam-like multiple spot valve oil return opening E inhales vapour collector by magnetic valve Z and pipeline with worst cold case module condenses machine and is connected, separator back-steam liquid vapour disengagement chamber venthole D inhales steam ports valve L by pipeline and worst cold case module condenses machine and is connected, condenser tube side side medium hot water outlet QY to be intake with heating demand side by Outer Tube and is connected, the condenser tube side side medium hot water QZ that answers back is connected with heating demand side backwater by Outer Tube, evaporimeter tube side side medium cryogenic media outlet ZY is connected with heat source side heat source tower inlet by Outer Tube, evaporimeter tube side side medium cryogenic media import ZW is connected with heat source side heat source tower liquid outlet by Outer Tube.
CN201410343717.6A 2014-07-19 2014-07-19 Flash gravity difference low heat source heat pump CN105318590A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2374820Y (en) * 1999-04-19 2000-04-19 吴植仁 Dripping dry type evaporimeter
CN2445259Y (en) * 2000-10-10 2001-08-29 清华同方股份有限公司 Water source heat pump with high-efficient heat exchanger
CN1598444A (en) * 2004-07-19 2005-03-23 烟台蓝德空调工业科技有限公司 Heat pump set using sea water source
CN101270941A (en) * 2008-05-21 2008-09-24 刘秋克 Heat source tower heat pump
CN101666566A (en) * 2009-09-29 2010-03-10 湖南秋克热源塔热泵科技工程有限公司 Separating device of frost-proof solution and condensed water
CN101701757A (en) * 2009-10-31 2010-05-05 苏州吉来冷冻空调设备配件有限公司 Shell-tube evaporator
CN103375847A (en) * 2012-04-20 2013-10-30 财团法人工业技术研究院 Oil-free centrifugal type cooling system of data machine room
CN103499164A (en) * 2013-08-12 2014-01-08 刘秋克 Haze wet heat source heat pump water-cooling all-in-one machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2374820Y (en) * 1999-04-19 2000-04-19 吴植仁 Dripping dry type evaporimeter
CN2445259Y (en) * 2000-10-10 2001-08-29 清华同方股份有限公司 Water source heat pump with high-efficient heat exchanger
CN1598444A (en) * 2004-07-19 2005-03-23 烟台蓝德空调工业科技有限公司 Heat pump set using sea water source
CN101270941A (en) * 2008-05-21 2008-09-24 刘秋克 Heat source tower heat pump
CN101666566A (en) * 2009-09-29 2010-03-10 湖南秋克热源塔热泵科技工程有限公司 Separating device of frost-proof solution and condensed water
CN101701757A (en) * 2009-10-31 2010-05-05 苏州吉来冷冻空调设备配件有限公司 Shell-tube evaporator
CN103375847A (en) * 2012-04-20 2013-10-30 财团法人工业技术研究院 Oil-free centrifugal type cooling system of data machine room
CN103499164A (en) * 2013-08-12 2014-01-08 刘秋克 Haze wet heat source heat pump water-cooling all-in-one machine

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Application publication date: 20160210