CN106352583B - A kind of heat source tower heat pump system utilized based on freezing regeneration and reactivation heat - Google Patents
A kind of heat source tower heat pump system utilized based on freezing regeneration and reactivation heat Download PDFInfo
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- CN106352583B CN106352583B CN201610703659.2A CN201610703659A CN106352583B CN 106352583 B CN106352583 B CN 106352583B CN 201610703659 A CN201610703659 A CN 201610703659A CN 106352583 B CN106352583 B CN 106352583B
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- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- 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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- 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
Abstract
The present invention provides a kind of heat source tower heat pump systems utilized based on freezing regeneration and reactivation heat, including refrigerant circuit, solution loop, vacuum to maintain circuit, vapor circuit, solution regenerative circuit and cold and hot water loop.Wherein, solution regenerative circuit includes the devices such as vacuum refrigeration regenerator, ice-solution separator, regenerator and the second compressor.It will need to carry out regenerated weak solution in heat source tower to spray into vacuum refrigeration regenerator, part water absorbs the heat vaporization of itself under vacuum conditions in weak solution, surplus solution temperature is set to drop to freezing point of solution, it freezes and ice crystal is precipitated, ice crystal is separated by ice-solution separator, concentrated solution is obtained, to realize the regeneration to solution.Simultaneously, solution is heated using the heat of vapor condensation release, the recycling of vapor heat is realized, efficiently solves the solution regeneration issues of heat source tower heat pump system, improves overall efficiency and security reliability of the heat source tower heat pump system under various operating conditions.
Description
Technical field
The invention belongs to refrigerated air-conditioning systems to design and manufacture field, be related to a kind of progress solution regeneration and realize vapor
The heat source tower heat pump device that heat recycles.
Background technique
Currently, the scheme that China's air conditioning system Cooling and Heat Source generallys use mainly has water cooled chiller+boiler, air
Three kinds of schemes of source heat pump and earth source heat pump.And heat source tower heat pump system is a kind of novel cold heat source plan, can be realized and passes through
A set of unit solves the demand of building summer cooling, Winter heat supply simultaneously, while comparing and utilizing water cooled chiller+boiler side
The deficiencies of case, it is idle that there is no winter water cooled chillers, and primary energy utilization ratio is lower；Compared to air source heat pump scheme,
Its summer operation is more efficient (suitable with water cooled chiller), fin when winter can thoroughly avoid air source heat pump heating operation
The frosting problem of pipe evaporator；Compared to earth source heat pump scheme, heat source tower heat pump has initial cost small, not by geography/geological conditions
The advantages that limitation.
Heat source tower heat pump system in winter heating operation when, using solution in heat source tower with air heat-exchange.In this process
In, since that there are partial pressures is poor for the water vapour of water vapor in air and solution surface, the moisture in air will enter solution, make molten
The concentration of liquid reduces, and the freezing point of solution will rise.In order to guarantee the safe and reliable of system operation, need to inhale solution from air
The moisture entered is discharged from solution, improves the concentration of solution, that is, realizes the regeneration of solution.And solution regeneration needs extraneous offer heat
Amount, solution regeneration selection again influence heat source tower heat pump system operation, meanwhile, the reproduction speed of solution regeneration and
Efficiency restricts heat source tower heat pump systematic difference scale.
Therefore, the efficient utilization of solution the regeneration heat source and solution reactivation heat of heat source tower heat pump system how is solved, such as
The problems such as what is realized the regenerative process of high speed and realizes the comprehensive high-efficiency of heat source tower heat pump system is designed a kind of new and effective
Heat source tower heat pump system becomes those skilled in the art's technical problem in the urgent need to address.
Summary of the invention
Technical problem: the object of the present invention is to provide a kind of efficiently solution heat source tower heat pump System Solution regeneration issues, and
The heat source tower heat pump system of raising system operational efficiency under various operating conditions.
Technical solution: the heat source tower heat pump system of the invention utilized based on freezing regeneration and reactivation heat, including refrigeration
Agent circuit, solution loop, vacuum maintain circuit, vapor circuit, solution regenerative circuit and cold and hot water loop.
Refrigerant circuit includes the first compressor, four-way valve, First Heat Exchanger, the first check valve, second one-way valve, liquid storage
Device, filter, electric expansion valve, third check valve, the 4th check valve, the second heat exchanger, gas-liquid separator and its relevant connection
Pipeline, the First Heat Exchanger are also the building block of cold and hot water loop simultaneously；Second heat exchanger is also solution loop simultaneously
Building block；
In refrigerant circuit, the output end of the first compressor is connect with four-way valve first input end, and four-way valve first exports
End is connect with First Heat Exchanger first input end, the first output end of First Heat Exchanger while entrance and third with the first check valve
The outlet of check valve connects, and the outlet of the first check valve and the input terminal of liquid storage device connect, the outlet of second one-way valve simultaneously with
The outlet of the input terminal of liquid storage device and the first check valve connects, and the output end of liquid storage device is defeated by filter and electric expansion valve
Enter end connection, the output end of electric expansion valve is divided into two-way, connects the entrance of third check valve all the way, and another way connection the 4th is single
To the entrance of valve, the outlet of the 4th check valve is connect with the entrance of the second heat exchanger first input end and second one-way valve simultaneously,
Second the first output end of heat exchanger is connect with the second input terminal of four-way valve, the input of four-way valve second output terminal and gas-liquid separator
End connection, the output end of gas-liquid separator are connect with the input terminal of the first compressor, the outlet of third check valve and the first heat exchange
Piping connection between the first output end of device and the entrance of the first check valve；
Solution loop includes the second heat exchanger, vacuum refrigeration regenerator, the first solution pump, regenerator, the first solenoid valve, three
Logical regulating valve, throttle valve, heat source tower and its relevant connection pipeline, the vacuum refrigeration regenerator are simultaneously vapor circuits and molten
The building block of liquid regenerative circuit；
In solution loop, heat source tower output end is connect with the entrance of the first solution pump, the outlet and threeway of the first solution pump
The connection of regulating valve input terminal, the first output end of three-way control valve connect with second the second input terminal of heat exchanger, three-way control valve the
Two output ends are connect with regenerator cryogenic fluid input terminal, the first output end of regenerator connection heat source tower first input end, and second
Heat exchanger second output terminal is divided into two-way, is connected to the first output end of regenerator and heat source tower first by the first solenoid valve all the way
On pipeline between input terminal, another way is connected with the entrance of throttle valve, and the outlet of throttle valve and vacuum refrigeration regenerator input
End connection；Solution regenerative circuit includes vacuum refrigeration regenerator, second solenoid valve, the second solution pump, ice-solution separator,
Three solenoid valves, solution reservoir, electric control valve, pressure sensor, first liquid level gauge, second liquid level gauge and its associated adapter tube
Road；
In solution regenerative circuit, the first output end of vacuum refrigeration regenerator is entered by second solenoid valve and the second solution pump
Mouthful connection, the outlet of the second solution pump connect ice-solution separator input terminal, and ice-solution separator solution output end passes through the
Three solenoid valves and the input terminal of solution reservoir connect, the entrance of the output end connection electric control valve of solution reservoir, electronic
The outlet of regulating valve is connect with the second input terminal of heat source tower；First liquid level gauge, second liquid level gauge are housed in vacuum refrigeration regenerator
And pressure sensor, to control the operation of solution regeneration system；
Vapor circuit includes vacuum refrigeration regenerator, solution strainer, the second compressor, regenerator, condensation water tank,
Four solenoid valves, the 5th solenoid valve and its relevant connection pipeline；
In vapor circuit, vacuum refrigeration regenerator second output terminal is connect with the entrance of the second compressor, the second compression
The outlet of machine is connect with regenerator vapor input terminal, and regenerator second output terminal is connect with condensation water tank condensation water inlet, cold
Condensation tank air intlet is connect with the 4th solenoid valve, and condensation water tank discharge outlet is connect with the 5th solenoid valve, solution strainer installation
In the upper position of vacuum refrigeration internal regenerator, to from molten in the vapor that vacuum refrigeration regenerator second output terminal flows out
Liquid is filtered；
It includes vacuum refrigeration regenerator that vacuum, which maintains circuit, the 6th solenoid valve, the 7th solenoid valve, compensator, pressure regulator valve, true
Sky pump and its relevant connection pipeline；
Vacuum maintains in circuit, and vacuum refrigeration regenerator third output end is divided into two-way, connect all the way with the 6th solenoid valve,
Another way is connected by the input terminal of pressure regulator valve and compensator, and the output end of compensator connects vacuum pump by the 7th solenoid valve
Entrance；Pressure sensor is housed in vacuum refrigeration regenerator, to measure the pressure in vacuum refrigeration regenerator；
Cold and hot water loop include First Heat Exchanger and its with unit hot and cold water backwater end and hot and cold water for the phase between water end (W.E.)
Close connecting line.First Heat Exchanger second inputs endmatcher group hot and cold water backwater end, First Heat Exchanger second in cold and hot water loop
Endmatcher group hot and cold water is exported for water end (W.E.).
In the present invention, by controlling three-way control valve, realize to respectively enteing the second heat exchanger and vacuum refrigeration solution again
The liquid inventory of raw device is adjusted, and the control to the liquid inventory and concentration for entering vacuum refrigeration regenerator is realized, so that heat source tower
Heat pump assembly remains operational the stabilization of solution concentration while obtaining optimal regeneration efficiency.
In the present invention, using the operating pressure in compensator and pressure regulation valve regulation vacuum refrigeration regenerator, to control solution
Regeneration temperature and speed.
In the present invention, itself is absorbed under vacuum conditions using part water in the weak solution for spraying into vacuum refrigeration regenerator
Heat vaporization heat absorption, so that surplus solution temperature is dropped to freezing point of solution, freeze and ice crystal is precipitated, by ice-solution separator into
Row separation, obtains concentrated solution, carries out solution regeneration without additional input heat.
In the present invention, after the second compressor compresses, the heat of vapor condensation release in vacuum refrigeration regenerator is utilized
Amount heats the solution in regenerator, realizes the efficient recycling of solution reactivation heat, and the heat absorption for reducing heat source tower is negative
Lotus improves system effectiveness.
When heat source tower heat pump cooling in summer is run, the refrigerant gas of low-temp low-pressure is from gas-liquid separator by the first compression
Become the discharge of high temperature and pressure superheated vapor after machine sucking compression, enters in the second heat exchanger by four-way valve, refrigerant releases heat
Amount, condensation become liquid, flow out from the second heat exchanger, then successively swollen by second one-way valve, liquid storage device, filter, electronics
The gas-liquid two-phase for becoming low-temp low-pressure after swollen valve enters the from the first output end of First Heat Exchanger after third check valve
One heat exchanger, refrigerant absorb heat evaporation in First Heat Exchanger, produce cold water, become overheated gas after refrigerant evaporating completely,
From First Heat Exchanger first input end, passing through four-way valve enters gas-liquid separator out, is then again sucked into the first compressor,
To complete refrigeration cycle.Cooling water is charged in solution loop at this time, removes heat source tower, the first solution pump work in solution loop
Outside, rest part all stops working.Cooling water is sucked after coming out from heat source tower by the first solution pump in solution loop, by the
After the pressurization of one solution pump, by three-way control valve all from second the second input terminal of heat exchanger into the second heat exchanger (at this time the
One solenoid valve is opened, throttle valve completely closes), heat is absorbed in the second heat exchanger by refrigerant is condensed into liquid, itself temperature
After degree increases, is flowed out from the second heat exchanger second output terminal, by the first solenoid valve, enter heat source from heat source tower first input end
Tower and air carry out hot and humid area, and cooling water temperature is flowed out from heat source tower output end again after reducing.It is freezed in cold and hot water loop
Water enters in First Heat Exchanger through unit hot and cold water backwater end from the second input terminal of First Heat Exchanger, chilled water wherein with system
Cryogen heat exchange, temperature reduce, from First Heat Exchanger second output terminal come out after by unit hot and cold water for water end (W.E.) flow out unit.This mould
Formula is lauched steam loop, solution regenerative circuit, vacuum and circuit is maintained not work.
The operation of heat source tower heat pump winter heating divides Three models, heating operation mode one: heat source tower heat pump winter heating fortune
Row, when humidity is smaller in air or in heat source tower by air to enter the moisture in solution less, ie in solution is without when regenerating, gas
In liquid/gas separator the refrigerant gas of low-temp low-pressure sucked by the first compressor, compress after be discharged, by four-way valve, changed from first
Hot device first input end enters First Heat Exchanger, and refrigerant releases heat, hot water preparing in First Heat Exchanger, while itself is cold
Liquid is congealed into, is flowed out from the first output end of First Heat Exchanger, by successively passing through liquid storage device, filter, electricity after the first check valve
Sub- expansion valve is throttled after decompression and is entered in the second heat exchanger with gas-liquid two-phase from the second heat exchanger first input end, second
After evaporating and exchange heat with solution in heat exchanger, from second the first output end of heat exchanger, flow through four-way valve enters gas-liquid to refrigerant out
Separator is finally sucked by the first compressor again, to complete heating circulation, hot water preparing.It is charged in solution loop at this time
Solution, in solution loop in addition to heat source tower, the first solution pump, the work of the second heat exchanger, rest part all stops working.Molten
In liquid circuit solution from heat source tower come out after by the first solution pump suck, by the first solution pump pressurization after pass through three-way control valve
All enter the second heat exchanger (the first solenoid valve is opened, throttle valve completely closes at this time) from second the second input terminal of heat exchanger,
The second heat exchanger, warp are flowed out from the second heat exchanger second output terminal after release heat is reduced to refrigerant, own temperature wherein
The first solenoid valve is crossed, enters heat source tower from heat source tower first input end and air carries out hot and humid area, after solution temperature raising again
It is secondary to be flowed out from heat source tower output end.Hot and cold water backwater end of the hot water through unit, defeated from First Heat Exchanger second in cold and hot water loop
Enter end enter First Heat Exchanger in, hot water wherein with refrigerant heat exchanger, temperature increase, go out from First Heat Exchanger second output terminal
Unit is flowed out for water end (W.E.) by unit hot and cold water after coming.This mode is lauched steam loop, solution regenerative circuit, vacuum and maintains circuit all
It does not work.
Heating operation mode two: when humidity is larger in air or in heat source tower by air to enter the moisture in solution more
When, solution is regenerated, and refrigerant circuit is the refrigerant gas of low-temp low-pressure in gas-liquid separator by the first compressor
It is discharged after sucking, compression, by four-way valve, enters First Heat Exchanger from First Heat Exchanger first input end, refrigerant is first
Heat, hot water preparing are released in heat exchanger, while itself is condensed into liquid, flow out, pass through from the first output end of First Heat Exchanger
First check valve, liquid storage device, filter, electric expansion valve are throttled defeated from the second heat exchanger first with gas-liquid two-phase after being depressured
Enter end to enter in the second heat exchanger by the 4th check valve, exchange heat in the second heat exchanger with solution, be evaporated heat absorption, freezes
From second the first output end of heat exchanger, flowing through four-way valve enters gas-liquid separator out after agent evaporating completely, finally again by first
Compressor sucking, to complete heating circulation.Charge solution in solution loop at this time, solution enters the after coming out from heat source tower
One solution pump is divided into two-way by three-way control valve, and solution enters the second heat exchanger from second the second input terminal of heat exchanger all the way,
In heat exchanger with refrigerant heat exchanger, solution temperature reduce after from the second heat exchanger second output terminal flow out, another way solution from
Regenerator cryogenic fluid input terminal enters regenerator, after solution is heated wherein, flows out from the first output end of regenerator, through heat
Source tower first input end flows back to heat source tower.The solution flowed out from the second heat exchanger is divided into two-way, passes through the first solenoid valve all the way, from
Heat source tower first input end flows back to heat source tower, and another way sprays into vacuum refrigeration regenerator after throttle valve.
Vacuum maintain circuit in, compensator is vacuumized using vacuum pump, keep compensator setting pressure limit, when
In compensator pressure be lower than setup pressure value when, vacuum air pump inoperative, close the 7th solenoid valve, when in compensator pressure be higher than set
When level pressure force value, vacuum pump work, the 7th solenoid valve is opened；Work using compensator and pressure regulator valve to vacuum refrigeration regenerator
Pressure is adjusted, so that solution is constantly in vapor state in vacuum refrigeration regenerator.
When solution regenerative circuit works, vacuum state is kept in vacuum refrigeration regenerator, low temperature weak solution passes through throttle valve
It sprays into vacuum refrigeration regenerator, part water absorbs the heat vaporization of itself under vacuum conditions in weak solution, makes surplus solution
Temperature drops to freezing point of solution, freezes and ice crystal is precipitated, and ice slurry is formed on the bottom that solution and ice crystal sink to vacuum refrigeration regenerator.
Liquid level to ice slurry in vacuum refrigeration regenerator rises at first liquid level gauge, opens the 6th solenoid valve, second solenoid valve, second
Solution pump, ice-solution separator and third solenoid valve, the ice slurry in vacuum refrigeration regenerator under the action of the second solution pump,
Ice-solution separator is delivered to from vacuum refrigeration regenerator ice output end, and ice slurry is divided into ice and dense molten in ice-solution separator
Liquid.Ice is directly discharged by ice-solution separator ice output end, and concentrated solution flows into solution storage by third solenoid valve in gravity
In storage, by adjusting electric control valve, the quality of heat source tower concentrated solution is flowed into according to the concentration control of solution in heat source tower.It is molten
While liquid regenerative circuit works, vapor loop works, the second compressor operating (the 4th solenoid valve and the 5th solenoid valve at this time
Close), the solution boils in vacuum refrigeration regenerator are sprayed into, generate vapor, vapor is by solution strainer to wherein institute
After carrying solution filtering, flowed out from vacuum refrigeration regenerator, from regenerator vapor input terminal after the second compressor compresses
It into regenerator, exchanges heat with the solution flowed into from regenerator cryogenic fluid input terminal, vapor is condensed into liquid, and condensate liquid is from returning
Hot device second output terminal enters condensation water tank.When the liquid level of ice slurry in vacuum refrigeration regenerator rises at first liquid level gauge,
4th solenoid valve and the 5th solenoid valve are opened, and condensed water is expelled directly out system, and the second compressor stops working at this time.
When heat source tower heat pump Winter heat supply closes to an end, system heating operation mode three: when solution height concentration formats, system
Refrigerant circuit, cold and hot water loop stop working, and vacuum maintains circuit and vapor circuit operating condition and mode two consistent, solution
Circuit and solution regenerative circuit are different.In solution loop, the first electric control valve is closed, and the second heat exchanger second of outflow is defeated
The solution of outlet all passes through throttle valve and imports in vacuum refrigeration regenerator, without flowing back into heat source tower.Solution regenerates back
Lu Zhong, electric control valve are closed, and the concentrated solution flowed into solution reservoir is without flowing back to heat source tower.In addition to this, solution loop
It is consistent with mode two with the flow path of fluid in solution regenerative circuit.
The utility model has the advantages that compared with prior art, the present invention having the advantage that
The heat source tower heat pump system proposed by the present invention efficiently utilized based on freezing regeneration and reactivation heat, will be changed from second
The cryogenic fluid come out in hot device sprays into vacuum refrigeration regenerator, and weak solution absorbs the heat vaporization of itself under vacuum, makes
Surplus solution temperature drops to freezing point of solution, freezes and ice crystal is precipitated to carry out solution regeneration, utilize refrigeration compared to previous
Unit provides cooling capacity and carries out freezing regeneration to solution, without providing additional energy during solution of the present invention is regenerated.Meanwhile
Using the operating pressure in compensator and pressure regulation valve regulation vacuum refrigeration regenerator, the regeneration temperature and speed of solution can be controlled
Degree.The vapor that part water vapor generates in solution condenses in regenerator, and the heat of generation enters in regenerator for heating
Cryogenic fluid, realize the efficient recycling of solution reactivation heat, reduce the heat absorption load of heat source tower, meanwhile, the system
Solution regeneration realizes the moisture double discharge in the form of ice and liquid water simultaneously in weak solution, has higher regeneration
Efficiency thoroughly solves the solution regeneration issues of heat source tower heat pump system, while improving heat source tower heat pump system in various fortune
Overall efficiency and security reliability under row operating condition.
Detailed description of the invention
Fig. 1 is that the present invention is based on the heat source tower heat pump system schematics that freezing regeneration and reactivation heat efficiently utilize.
Have in figure: the first compressor 1, four-way valve 2, four-way valve first input end 2a, four-way valve the first output end 2b, four-way
Valve the second input terminal 2c, four-way valve second output terminal 2d, First Heat Exchanger 3, First Heat Exchanger first input end 3a, first exchanges heat
Device the first output end 3b, First Heat Exchanger the second input terminal 3c, First Heat Exchanger second output terminal 3d, the first check valve 4, second
Check valve 5, liquid storage device 6, filter 7, electric expansion valve 8, third check valve 9, the 4th check valve 10, gas-liquid separator 11, the
Two heat exchangers 12, the second heat exchanger first input end 12a, second the first output end of heat exchanger 12b, the input of the second heat exchanger second
Hold 12c, the second heat exchanger second output terminal 12d, three-way control valve 13, three-way control valve input terminal 13a, three-way control valve first
Output end 13b, three-way control valve second output terminal 13c, the first solution pump 14, heat source tower 15, heat source tower first input end 15a,
Heat source tower output end 15b, the second input terminal of heat source tower 15c, the first solenoid valve 16, throttle valve 17, vacuum refrigeration regenerator 18, very
Air-cooled jelly regenerator input terminal 18a, vacuum refrigeration regenerator the first output end 18b, vacuum refrigeration regenerator second output terminal
18c, vacuum refrigeration regenerator third output end 18d, solution strainer 19, second solenoid valve 20, the second solution pump 21, ice-is molten
Liquid/gas separator 22, ice-solution separator input terminal 22a, ice-solution separator solution output end 22b, ice-solution separator ice
Output end 22c, third solenoid valve 23, solution reservoir 24, electric control valve 25, the 6th solenoid valve 26, pressure regulator valve 27, compensator
28, the 7th solenoid valve 29, vacuum pump 30, the second compressor 31, regenerator 32, regenerator cryogenic fluid input terminal 32a, backheat
Device the first output end 32b, regenerator vapor input terminal 32c, regenerator second output terminal 32d, condensation water tank 33, condensation water tank
Condense water inlet 33a, condensation water tank discharge outlet 33b, condensation water tank air intlet 33c, the 4th solenoid valve 34, the 5th solenoid valve
35, pressure sensor 36, first liquid level gauge 37, second liquid level gauge 38.
Specific embodiment
The present invention is further illustrated with specific embodiment with reference to the accompanying drawings of the specification.
The present invention provides a kind of heat source tower heat pumps recycled based on freezing regeneration and its heat, including refrigerant to return
Road, solution loop, vacuum maintain circuit, vapor circuit, solution regenerative circuit and cold and hot water loop.Specific connection method is
The output end of first compressor 1 is connect with four-way valve first input end 2a, four-way valve the first output end 2b and First Heat Exchanger the
One input terminal 3a connection, First Heat Exchanger the first output end 3b go out with the entrance of the first check valve 4 and third check valve 9 simultaneously
Mouthful connection, the outlet of the first check valve 4 connect with the input terminal of liquid storage device 6, the outlet of second one-way valve 5 and meanwhile with liquid storage device 6
Input terminal and the first check valve 4 outlet connection, the output end of liquid storage device 6 passes through the input of filter 7 and electric expansion valve 8
End connection, the output end of electric expansion valve 8 are divided into two-way, connect the entrance of third check valve 9 all the way, and another way connection the 4th is single
To the entrance of valve 10, the outlet of the 4th check valve 10 enters with the second heat exchanger first input end 12a and second one-way valve 5 simultaneously
Mouth connection, second heat exchanger the first output end 12b are connect with the second input terminal of four-way valve 2c, four-way valve second output terminal 2d and gas
The input terminal of liquid/gas separator 11 connects, and the output end of gas-liquid separator 11 is connect with the input terminal of the first compressor 1, and third is unidirectional
Piping connection between the outlet and First Heat Exchanger the first output end 3b and the entrance of the first check valve 4 of valve 9；
Heat source tower output end 15b is connect with the entrance of the first solution pump 14, and the outlet and threeway of the first solution pump 14 are adjusted
The 13a connection of valve input terminal, three-way control valve the first output end 13b are connect with second the second input terminal of heat exchanger 12c, and threeway is adjusted
Valve second output terminal 13c is connect with regenerator cryogenic fluid input terminal 32a, regenerator the first output end 32b connection heat source tower
One 15a, the second heat exchanger second output terminal 12d points of input terminal is two-way, is connected to regenerator by the first solenoid valve 16 all the way
On pipeline between first output end 32b and heat source tower first input end 15a, another way is connected with the entrance of throttle valve 17, section
The outlet of stream valve 17 is connect with vacuum refrigeration regenerator input terminal 18a；
Vacuum refrigeration regenerator the first output end 18b is connect by second solenoid valve 20 with the entrance of the second solution pump 21,
The outlet of second solution pump 21 connects ice-solution separator input terminal 22a, and ice-solution separator solution output end 22b passes through the
Three solenoid valves 23 are connect with the input terminal of solution reservoir 24, and the output end connection electric control valve 25 of solution reservoir 24 enters
Mouthful, the outlet of electric control valve 25 is connect with the second input terminal of heat source tower 15c, the first liquid is housed in vacuum refrigeration regenerator 18
Position meter 37, second liquid level gauge 38 and pressure sensor 36, to control the operation of solution regeneration system；
In vapor circuit, vacuum refrigeration regenerator second output terminal 18c is connect with the entrance of the second compressor 31, and second
The outlet of compressor 31 is connect with regenerator vapor input terminal 32c, regenerator second output terminal 32d and condensation water tank condensed water
Import 33a connection, condensation water tank air intlet 33c are connect with the 4th solenoid valve 34, condensation water tank discharge outlet 33b and the 5th electromagnetism
Valve 35 connects, and solution strainer 19 is installed on the upper position inside vacuum refrigeration regenerator 18, to from vacuum refrigeration regenerator
Solution in the vapor of second output terminal 18c outflow is filtered；
Vacuum maintain circuit in, vacuum refrigeration regenerator third output end 18d is divided into two-way, all the way with the 6th solenoid valve 26
Connection, another way are connect by pressure regulator valve 27 with the input terminal of compensator 28, and the output end of compensator 28 passes through the 7th solenoid valve
The entrance of 29 connection vacuum pumps 30, is equipped with pressure sensor in vacuum refrigeration regenerator 18, to measure vacuum refrigeration regeneration
Pressure in device 18；
In cold and hot water loop, the second input terminal of First Heat Exchanger 3c picks a group hot and cold water backwater end, First Heat Exchanger second
Output end 3d picks group hot and cold water for water end (W.E.).
When heat source tower heat pump cooling in summer is run, the refrigerant gas of low-temp low-pressure is from gas-liquid separator 11 by the first pressure
Become the discharge of high temperature and pressure superheated vapor after the sucking compression of contracting machine 1, enters in the second heat exchanger 12 by four-way valve 2, refrigerant
Heat is released, condensation becomes liquid, flows out from the second heat exchanger 12, then successively by second one-way valve 5, liquid storage device 6, filtering
The gas-liquid two-phase for becoming low-temp low-pressure after device 7, electric expansion valve 8, after third check valve 9, from First Heat Exchanger first
Output end 3b enters First Heat Exchanger 3, and refrigerant absorbs heat evaporation in First Heat Exchanger 3, produces cold water, refrigerant evaporating completely
After become overheated gas, from First Heat Exchanger first input end 3a come out pass through four-way valve 2 enter gas-liquid separator 11, then again
It is secondary to be inhaled into the first compressor 1, to complete refrigeration cycle.Cooling water is charged in solution loop at this time, is removed in solution loop
Outside heat source tower 15, the first solution pump 14 work, rest part all stops working.Cooling water goes out from heat source tower 15 in solution loop
It is sucked after coming by the first solution pump 14, after the pressurization of the first solution pump 14, by three-way control valve 13 all from the second heat exchange
Device the second input terminal 12c enters the second heat exchanger 12 (the first solenoid valve is opened at this time, throttle valve completely closes), in the second heat exchange
Heat is absorbed in device 12, refrigerant is condensed into liquid, after own temperature increases, flow from the second heat exchanger second output terminal 12d
Out, by the first solenoid valve 16, from heat source tower first input end 15a, hot and humid area is carried out into heat source tower 15 and air, it is cooling
Coolant-temperature gage is flowed out from heat source tower output end 15b again after reducing.In cold and hot water loop, hot and cold water backwater end of the chilled water through unit
3c enters in First Heat Exchanger 3 from the second input terminal of First Heat Exchanger 3c, chilled water wherein with refrigerant heat exchanger, temperature drop
It is low, from First Heat Exchanger second output terminal 3d come out after by unit hot and cold water for water end (W.E.) 3d flow out unit.Vapor under this mode
Circuit, solution regenerative circuit, vacuum maintain circuit not work.
The operation of heat source tower heat pump winter heating divides Three models, heating operation mode one: heat source tower heat pump winter heating fortune
Row, when humidity is smaller in air or in heat source tower by air to enter the moisture in solution less, ie in solution is without when regenerating, gas
In liquid/gas separator 11 refrigerant gas of low-temp low-pressure sucked by the first compressor 1, compress after be discharged, by four-way valve 2, from
One heat exchanger first input end 3a enters First Heat Exchanger 3, and refrigerant releases heat in First Heat Exchanger 3, hot water preparing, together
Shi Zishen is condensed into liquid, flows out from First Heat Exchanger the first output end 3b, by successively passing through liquid storage device after the first check valve 4
6, filter 7, electric expansion valve 8 are throttled after decompression and enter second from the second heat exchanger first input end 12a with gas-liquid two-phase
In heat exchanger 12, the evaporation and with after solution heat exchange in the second heat exchanger 12, refrigerant is from second the first output end of heat exchanger 12b
Four-way valve 2 is flowed through out and enters gas-liquid separator 11, is finally sucked again by the first compressor 1, to complete heating circulation, system
Hot water taking.Solution is charged in solution loop at this time, removes heat source tower 15, the first solution pump 14, the second heat exchanger in solution loop
12 work are outer, and rest part all stops working.Solution is inhaled after coming out from heat source tower 15 by the first solution pump 14 in solution loop
Enter, by three-way control valve 13 all from second heat exchanger the second input terminal 12c into the after the pressurization of the first solution pump 14
Two heat exchangers 12 (the first solenoid valve is opened at this time, throttle valve completely closes), discharge heat to refrigerant, own temperature wherein
The second heat exchanger 12 is flowed out from the second heat exchanger second output terminal 12d after reduction, by the first solenoid valve 16, from heat source tower first
Input terminal 15a enters heat source tower 15 and air carries out hot and humid area, after solution temperature increases, again from heat source tower output end 15b
Outflow.Hot and cold water backwater end of the hot water through unit in cold and hot water loop enters first from First Heat Exchanger the second input terminal 3c and changes
In hot device 3, hot water wherein with refrigerant heat exchanger, temperature increase, from First Heat Exchanger second output terminal 3d come out after by unit
Hot and cold water flows out unit for water end (W.E.).This mode is lauched steam loop, solution regenerative circuit, vacuum and circuit is maintained not work.
Heating operation mode two: when humidity is larger in air or in heat source tower by air to enter the moisture in solution more
When, solution is regenerated, and refrigerant circuit is the refrigerant gas of low-temp low-pressure in gas-liquid separator 11 by the first compression
It is discharged after the sucking of machine 1, compression, by four-way valve 2, enters First Heat Exchanger 3, refrigerant from First Heat Exchanger first input end 3a
Heat, hot water preparing are released in First Heat Exchanger 3, while itself is condensed into liquid, from the first output end of First Heat Exchanger 3b
Outflow is throttled after decompression with gas-liquid two-phase from second by the first check valve 4, liquid storage device 6, filter 7, electric expansion valve 8
Heat exchanger first input end 12a by the 4th check valve 10 enter the second heat exchanger 12 in, in the second heat exchanger 12 with solution
Heat exchange, is evaporated heat absorption, flow through out after refrigerant evaporating completely from second heat exchanger the first output end 12b four-way valve 2 into
Enter gas-liquid separator 11, finally sucked again by the first compressor 1, to complete heating circulation.It is charged in solution loop at this time
Solution, solution from heat source tower 15 come out after enter the first solution pump 14, be divided into two-way by three-way control valve 13, all the way solution
From second heat exchanger the second input terminal 12c enter the second heat exchanger 12, in heat exchanger with refrigerant heat exchanger, solution temperature reduce
It is flowed out afterwards from the second heat exchanger second output terminal 12d, another way solution enters regenerator from regenerator cryogenic fluid input terminal 32a
32, after solution is heated wherein, is flowed out from regenerator the first output end 32b, flow back to heat source through heat source tower first input end 15a
Tower 15.The solution flowed out from the second heat exchanger 12 is divided into two-way, passes through the first solenoid valve 16 all the way, from heat source tower first input end
15a flows back to heat source tower 15, and another way sprays into vacuum refrigeration regenerator 18 after throttle valve 17.
Vacuum maintains to vacuumize compensator 28 using vacuum pump 30 in circuit, keeps compensator 28 in the pressure of setting
Range, when pressure is lower than setup pressure value in compensator 28, vacuum pump 30 does not work, and closes the 7th solenoid valve 29, works as pressure regulation
When pressure is higher than setup pressure value in tank 28, vacuum pump 30 works, and the 7th solenoid valve 29 is opened；Utilize compensator 28 and pressure regulator valve
The operating pressure of 27 pairs of vacuum refrigeration regenerators 18 is adjusted, so that solution is constantly in vaporization in vacuum refrigeration regenerator 18
State.
When solution regenerative circuit works, vacuum state is kept in vacuum refrigeration regenerator 18, low temperature is through solution by throttling
Valve 17 sprays into vacuum refrigeration regenerator 18, and part water absorbs the heat vaporization of itself under vacuum conditions in weak solution, makes to remain
Remaining solution temperature drops to freezing point of solution, freezes and ice crystal is precipitated, and solution and ice crystal sink to the bottom of vacuum refrigeration regenerator 18
Form ice slurry.Liquid level to ice slurry in vacuum refrigeration regenerator 18 rises at first liquid level gauge, opens the 6th solenoid valve 26, the
Two solenoid valves 20, the second solution pump 21, ice-solution separator 22 and third solenoid valve 23, the ice in vacuum refrigeration regenerator 18
Slurry is delivered to ice-solution separator 22 from the first output end of vacuum refrigeration regenerator 18b under the action of the second solution pump 21,
Ice slurry is divided into ice and concentrated solution in ice-solution separator 22.Ice is directly discharged by ice-solution separator ice output end 22c, dense
Solution is flowed into solution reservoir 24 in gravity by third solenoid valve 23, by adjusting electric control valve 25, according to heat
The concentration control of solution flows into the quality of 15 concentrated solution of heat source tower in source tower 15.While solution regenerative circuit works, vapor
Loop works, the second compressor 31 work at this time (the 4th solenoid valve 34 and the 5th solenoid valve 35 are closed), spray into vacuum refrigeration again
Solution boils in raw device 18 generate vapor, vapor after solution strainer 19 is to wherein entrained solution filtering, from
Vacuum refrigeration regenerator 18 flows out, and enters backheat from the second input terminal 32c of regenerator 32 after the compression of the second compressor 31
Device 32 exchanges heat with the solution that flows into from 32 first input end 32a of regenerator, and vapor is condensed into liquid, and condensate liquid is from regenerator
Second output terminal 32d enters condensation water tank 33.When the liquid level of ice slurry in vacuum refrigeration regenerator 18 rises at first liquid level gauge
When, the 4th solenoid valve 34 and the 5th solenoid valve 35 are opened, and condensed water is expelled directly out system, and the second compressor 31 stops work at this time
Make.
When heat source tower heat pump Winter heat supply closes to an end, system heating operation mode three: when solution height concentration formats, system
Refrigerant circuit, cold and hot water loop stop working, and vacuum maintains circuit and vapor circuit operating condition and mode two consistent, solution
Circuit and solution regenerative circuit are different.In solution loop, the first solenoid valve 16 is closed, and the second heat exchanger 12 second of outflow is defeated
The solution of outlet 12d all passes through throttle valve 17 and imports in vacuum refrigeration regenerator 18, without flowing back into heat source tower 15.It is molten
In liquid regenerative circuit, electric control valve 25 is closed, and the concentrated solution flowed into solution reservoir 24 is without flowing back to heat source tower 15.Except this
Except, the flow path of fluid and mode two are consistent in solution loop and solution regenerative circuit.
Above-described embodiment is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill of the art
For personnel, without departing from the principle of the present invention, several improvement and equivalent replacement can also be made, these are to the present invention
Claim improve with the technical solution after equivalent replacement, each fall within protection scope of the present invention.
Claims (6)
1. a kind of heat source tower heat pump system utilized based on freezing regeneration and reactivation heat, which is characterized in that the system includes system
Refrigerant circuit, solution loop, vacuum maintain circuit, vapor circuit, solution regenerative circuit and cold and hot water loop；
The refrigerant circuit includes the first compressor (1), four-way valve (2), First Heat Exchanger (3), the first check valve (4), the
Two check valves (5), liquid storage device (6), filter (7), electric expansion valve (8), third check valve (9), the 4th check valve (10), gas
Liquid/gas separator (11), the second heat exchanger (12) and its relevant connection pipeline, the First Heat Exchanger (3) are also that hot and cold water returns simultaneously
The building block on road；Second heat exchanger (12) is also the building block of solution loop simultaneously；In refrigerant circuit, first pressure
The output end of contracting machine (1) is connect with four-way valve first input end (2a), the first output end of four-way valve (2b) and First Heat Exchanger the
One input terminal (3a) connection, the first output end of First Heat Exchanger (3b) are unidirectional with the entrance and third of the first check valve (4) simultaneously
The outlet of valve (9) connects, and the outlet of the first check valve (4) is connect with the input terminal of liquid storage device (6), and second one-way valve (5) goes out
Mouth is connect with the outlet of the input terminal of liquid storage device (6) and the first check valve (4) simultaneously, and the output end of liquid storage device (6) passes through filtering
Device (7) is connect with the input terminal of electric expansion valve (8), and the output end of electric expansion valve (8) is divided into two-way, connects third list all the way
To the entrance of valve (9), another way connects the entrance of the 4th check valve (10), and the outlet of the 4th check valve (10) is changed with second simultaneously
Hot device first input end (12a) connects with the entrance of second one-way valve (5), second the first output end of heat exchanger (12b) and four-way
The second input terminal of valve (2c) connection, four-way valve second output terminal (2d) are connect with the input terminal of gas-liquid separator (11), gas-liquid point
Output end from device (11) is connect with the input terminal of the first compressor (1), the outlet of third check valve (9) and First Heat Exchanger the
Piping connection between one output end (3b) and the entrance of the first check valve (4)；
The solution loop includes the second heat exchanger (12), vacuum refrigeration regenerator (18), the first solution pump (14), regenerator
(32), the first solenoid valve (16), three-way control valve (13), throttle valve (17), heat source tower (15) and its relevant connection pipeline, heat source
Tower output end (15b) is connect with the entrance of the first solution pump (14), and the outlet of the first solution pump (14) and three-way control valve input
(13a) connection is held, the first output end of three-way control valve (13b) is connect with second the second input terminal of heat exchanger (12c), and threeway is adjusted
Valve second output terminal (13c) is connect with regenerator cryogenic fluid input terminal (32a), the first output end of regenerator (32b) connection heat
Source tower first input end (15a), the second heat exchanger second output terminal (12d) are divided into two-way, pass through the first solenoid valve (16) all the way
It is connected on the pipeline between the first output end of regenerator (32b) and heat source tower first input end (15a), another way and throttle valve
(17) entrance connection, the outlet of throttle valve (17) is connect with vacuum refrigeration regenerator input terminal (18a)；
It includes vacuum refrigeration regenerator (18), the 6th solenoid valve (26), the 7th solenoid valve (29), pressure regulation that the vacuum, which maintains circuit,
Tank (28), pressure regulator valve (27), vacuum pump (30) and its relevant connection pipeline, vacuum refrigeration regenerator third output end (18d) point
At two-way, it is connect all the way with the 6th solenoid valve (26), another way is connect by pressure regulator valve (27) with the input terminal of compensator (28),
The entrance that the output end of compensator (28) passes through the 7th solenoid valve (29) connection vacuum pump (30)；
The vapor circuit includes vacuum refrigeration regenerator (18), solution strainer (19), the second compressor (31), regenerator
(32), condensation water tank (33), the 4th solenoid valve (34), the 5th solenoid valve (35) and its relevant connection pipeline, vacuum refrigeration regeneration
Device second output terminal (18c) is connect with the entrance of the second compressor (31), and the outlet of the second compressor (31) and regenerator water steam
Gas input terminal (32c) connection, regenerator second output terminal (32d) are connect with condensation water tank condensation water inlet (33a), condensation water tank
Air intlet (33c) is connect with the 4th solenoid valve (34), and condensation water tank discharge outlet (33b) is connect with the 5th solenoid valve (35), molten
Liquid filter (19) is installed on the internal upper position of vacuum refrigeration regenerator (18), exports to from vacuum refrigeration regenerator second
Solution in the vapor of end (18c) outflow is filtered；
The solution regenerative circuit includes vacuum refrigeration regenerator (18), second solenoid valve (20), the second solution pump (21), ice-
Solution separator (22), third solenoid valve (23), solution reservoir (24), electric control valve (25), pressure sensor (36),
One liquidometer (37), second liquid level gauge (38) and its relevant connection pipeline, the first output end of vacuum refrigeration regenerator (18b) pass through
Second solenoid valve (20) is connect with the entrance of the second solution pump (21), outlet connection ice-solution separation of the second solution pump (21)
Device input terminal (22a), ice-solution separator solution output end (22b) pass through third solenoid valve (23) and solution reservoir (24)
Input terminal connection, solution reservoir (24) output end connection electric control valve (25) entrance, electric control valve (25)
Outlet is connect with the second input terminal of heat source tower (15c), and the first liquid level gauge (37), that second liquid level gauge (38) is mounted on vacuum is cold
Freeze in regenerator (18)；
The cold and hot water loop include First Heat Exchanger (3) and its with unit hot and cold water backwater end and hot and cold water between water end (W.E.)
Relevant connection pipeline, in the cold and hot water loop, the second input terminal of First Heat Exchanger (3c) picks a group hot and cold water backwater end, and first
Heat exchanger second output terminal (3d) picks group hot and cold water for water end (W.E.).
2. the heat source tower heat pump system according to claim 1 utilized based on freezing regeneration and reactivation heat, feature are existed
In equipped with pressure sensor (36), the installation site of the first liquid level gauge (37) at the top of the vacuum refrigeration regenerator (18)
Higher than second liquid level gauge (38).
3. the heat source tower heat pump system according to claim 1 utilized based on freezing regeneration and reactivation heat, feature are existed
In when solution does not need regeneration, closing three-way control valve second output terminal (13c) is opened three-way control valve input terminal (13a)
With the first output end of three-way control valve (13b), the solution come out from the first solution pump (14) is made all to flow into the second heat exchanger
(12) in；When solution needs to regenerate, three-way control valve input terminal (13a) and the first output end of three-way control valve (13b) are opened,
The aperture of three-way control valve second output terminal (13c) is adjusted, controls from the first solution pump (14) and flows into regenerator (32) solution
Flow.
4. according to claim 1, the heat source tower heat pump system utilized described in 2 or 3 based on freezing regeneration and reactivation heat,
It is characterized in that, the operating pressure in the vacuum refrigeration regenerator (18) is adjusted by compensator (28) and pressure regulator valve (27).
5. the heat source tower heat pump system according to claim 1,2 or 3 utilized based on freezing regeneration and reactivation heat, special
Sign is, generates ice crystal and vapor when weak solution regenerates in the vacuum refrigeration regenerator (18) simultaneously, and solution regeneration is not required to
Want additional energy input.
6. the heat source tower heat pump system according to claim 1,2 or 3 utilized based on freezing regeneration and reactivation heat, special
Sign is that weak solution regenerates generated vapor by after the second compressor (31) compression in the vacuum refrigeration regenerator (18)
The condensation heat of vapor is recycled by regenerator (32) again.
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| CN106989540B (en) * | 2017-05-11 | 2023-06-30 | 南京工程学院 | Dual-machine heat source tower heat pump system with solution regeneration function and solution regeneration method |
| CN109269151A (en) * | 2018-09-07 | 2019-01-25 | 湖南创化低碳环保科技有限公司 | The enrichment facility of air energy heat pump solution |
| CN109974340A (en) * | 2019-04-04 | 2019-07-05 | 南京工程学院 | Energy tower regenerative device of solution and its working method based on vacuum-freezing process |
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