CN105509378B - A kind of automatic evacuation gas device and application method - Google Patents
A kind of automatic evacuation gas device and application method Download PDFInfo
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- CN105509378B CN105509378B CN201510912073.2A CN201510912073A CN105509378B CN 105509378 B CN105509378 B CN 105509378B CN 201510912073 A CN201510912073 A CN 201510912073A CN 105509378 B CN105509378 B CN 105509378B
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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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
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
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- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides a kind of automatic evacuation gas device and application method, first separator upper end connects mixed gas pipeline by first filter, top passes through the first check valve connecting secondary separator bottom, by the first temperature-sensing valve connecting secondary separator upper end, second separator top passes through blowdown piping and connects ammonia absorption water receptacle high-pressure liquid line.Structural principle of the present invention is simple, the condensing pressure of refrigeration system can be effectively reduced, increase refrigerating capacity, power consumption is saved, leakage of the refrigerant to environment is reduced, compared with traditional horizontal quadruple pipe air-discharging device, it is simple to operate, and can realize and automatically control, energy-efficient operation is enabled a system to, direct economic benefit is produced in system operation.Especially suitable for ammonia refrigeration system.
Description
Technical field：
The present invention relates to air separator field, more particularly to a kind of automatic evacuation gas device and application method.
Background technology：
Air separator mainly or for excluding the incoagulable gas that contains in refrigerating plant, certainly mainly using air as
It is main.What the present country used has horizontal-type bushing-type, three kinds of patterns of vertical disc tubular type and self-action air separator.Its connection request
It is as follows：Feed pipe can be near with regulation station or air separator high-pressure liquid tube pick out, air separator is used as after throttling
Low-temperature receiver.
Muffler should be connected on the return-air duct for the evaporation circuit that evaporating temperature is relatively low, cooling condition is stable, often works,
Directly it must not be connected with suction line, in order to avoid wet stroke occurs when feed flow is more, gas mixing pipe should be connected to reservoir and condenser.By
The incoagulable gas into refrigeration system is accumulated in condenser and reservoir in the fluid-tight effect of reservoir, thus should from this two
Individual equipment picks out mixture pipe to air separator.Some vertical (type) condensers have two joints of dropping a hint up and down.Because
Under certain pressure, temperature lower air content is big, and when vertical (type) condenser works, nearby temperature is minimum for liquid outlet, thus place's emptying
Gas is suitable.When being stopped, then can be dropped a hint from the exit on top.Emptying tracheae should be accessed in water, for cold
The processing of the liquid to get off is coagulated, horizontal is that inner loop uses, and vertical be connected on air separator feed pipe recycles,
Reservoir can be entered using difference in height.
The content of the invention：
The object of the invention provides that a kind of structural principle is simple, can effectively reduce the condensing pressure of system, increase refrigeration
Amount, power consumption is saved, reduce leakage of the refrigerant to environment, it is simple to operate, and can realize and automatically control, enable a system to efficiently save
The operation of energy, the technical scheme of direct economic benefit is produced in system operation：
A kind of automatic evacuation gas device and application method, mainly including first separator, second separator, gas mixing pipe
Road, high-pressure liquid line, suction line, blowdown piping and ammonia absorb water receptacle, mixed gas pipeline, high-pressure liquid line point
Turborefrigerator is not connect, and first separator upper end connects mixed gas pipeline by first filter, and top is spherical by first
Check valve connecting secondary separator bottom, high-pressure liquid line is by the first thermostatic expansion valve connecting secondary separator upper end, and two
Ammonia is connected by blowdown piping at the top of secondary separator and absorbs water receptacle.
Preferably, first separator bottom is provided with liquid-sighting glass and the second filter, and pass through the first check valve, second
Check valve and the 3rd filter connecting secondary separator.
Preferably, being provided with ball float plunger and valve seat inside second separator, top is provided with 300psid pressure safety valves,
And suction line is connected by 225psid check-valves, 225psid check-valves side sets pressure gauge, second separator bottom
Be additionally provided with straight-through stop valve, between second separator and blowdown piping be provided with incoagulable gas stop valve, the second ball valve,
Second thermostatic expansion valve and 1psid check-valves, second separator are provided with temperature controller, also set up and drop a hint on blowdown piping
Magnetic valve, temperature controller connect magnetic valve of dropping a hint.
Preferably, device automatic control method of dropping a hint mainly includes the following steps that：
A, the mixed gas of turborefrigerator discharge enters first separator by mixed gas pipeline, in first separator
Heat exchange coil cools to liquid refrigerant；
B, it is divided into refrigerant vapour and incoagulable gas after cooling, refrigerant vapour, which is condensed, is discharged into low pressure evaporation
Device coil inlet, incoagulable gas accumulate in the top of second separator in a gaseous form；
C, the sensible heat that air cooling is released is much smaller than the latent heat released during refrigerant liquefaction, and air is not undergone phase transition, still
It is so gaseous state, air is cumulative at the top of second separator, temperature more and more higher, and temperature controller controls magnetic valve of dropping a hint
Close, temperature reduces；
D, when temperature is gradually dropped to the lower limit of setting value, magnetic valve of dropping a hint is opened and discharges air by blowdown piping,
The incoagulable gas of mixing enters second separator again simultaneously, and temperature rises therewith again, when temperature rises to the upper limit, temperature control
Device orders closed electromagnetic valve of dropping a hint again, and discharge process temporarily terminates, so circulation.
Preferably, incoagulable gas discharge method mainly includes the following steps that:
A, incoagulable gas enters the bottom of second separator by the first ball valve at the top of first separator, together
When, the refrigerant liquid of the high pressure of turborefrigerator discharge enters high-pressure liquid line and is changed into low by the first thermostatic expansion valve
Compression refrigerant liquid, and the evaporation coil entered in second separator；
B, the first thermostatic expansion valve experiences the degree of superheat of evaporation coil outlet, and supplements liquid refrigerant on demand to secondary
Separator, liquid refrigerant are absorbed the heat of incoagulable gas by cooling coil, become steam, into the pressure of turborefrigerator
Contracting machine air entry, incoagulable gas are not condensed into liquid, exist in a gaseous form at the top of second separator；
C, the liquid level of the liquid refrigerant in second separator changes with the change of ball float plunger, when ball float plunger and two
When valve seat at the top of secondary separator matches, incoagulable gas will be exhausted from system；
D, the pressure in second separator is higher than 80psig, and the temperature in second separator is equal to or less than 40 ℉, no
Solidifying property gas is discharged into ammonia through blowdown piping by the second thermostatic expansion valve and the second ball valve and absorbs water receptacle；
E, when incoagulable gas discharges, liquid level of the liquid refrigerant in second separator rises, and incoagulable gas removes
When, valve seat that ball float plunger is risen on ball float plunger, emptying process terminates；
F, the refrigerant liquid condensed out from incoagulable gas is leaked back into second separator by the 3rd filter
Evaporation coil low-pressure inlet, for condense come in incoagulable gas.
The beneficial effects of the present invention are：
Structural principle of the present invention is simple, and it can effectively reduce the condensing pressure of system, increases refrigerating capacity, saves power consumption,
Leakage of the refrigerant to environment is reduced, it is simple to operate compared with horizontal quadruple tubular type, and can realize and automatically control, enable the system to
Enough energy-efficient operations, produce direct economic benefit in system operation.
Brief description of the drawings：
Fig. 1 is the structure principle chart of the present invention；
The incoagulable gas that Fig. 2 is the present invention is vented state principle figure.
Embodiment：
To make the goal of the invention of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing to the present invention's
Embodiment is described in further detail.
As shown in Figure 1 and Figure 2, a kind of automatic evacuation gas device and application method, mainly including first separator 1, secondary separation
Device 2, mixed gas pipeline 3, high-pressure liquid line 4, suction line 5, blowdown piping 6 and ammonia absorb water receptacle 7, the mixing
Gas piping 3 is connected to the top of condenser and reservoir, the high-pressure liquid line 4 is connected to the industrial of refrigeration system reservoir and managed
Road, the first upper end of separator 1 connect the mixed gas pipeline 3 by first filter 8, and top passes through the first check valve
The 9 connection bottoms of second separator 2, the high-pressure liquid line 4 connect the second separator 2 by the first temperature-sensing valve 10
Upper end on evaporation coil, the top of the second separator 2 connect the ammonia by the blowdown piping 6 and absorb water receptacle 7.
In the present embodiment, the first bottom of separator 1 is provided with the filter 13 of liquid-sighting glass 11 and second, and unidirectional by first
Valve 9 connects the second separator 2.The inside of second separator 2 is provided with ball float plunger b and valve seat c, and top is pressed provided with 300psid
Power safety valve 18, and suction line 5 is connected by 225psid check-valves 19, the side of 225psid check-valves 19 sets pressure gauge
20, the bottom of second separator 2 is additionally provided with straight-through stop valve 21 to blowdown, the second separator 2 and the blowdown piping 6 it
Between be provided with incoagulable gas stop valve 22, the second check valve 23, the second temperature-sensing valve 24 and pressure difference be 1psid check-valves 25.
Device automatic control method of dropping a hint mainly includes the following steps that：
A, condenser and the mixed gas of reservoir top discharge enter first separator 1 by mixed gas pipeline 3, just
Secondary separator 1 is separated for the first time using inertia to mixed gas；
B, refrigerant liquid and incoagulable gas are produced after first separation, entered after the filtered throttling of refrigerant liquid secondary
In the evaporation coil of separator, incoagulable gas is entered by the bottom of second separator 2 in a gaseous form；
C, the condensing temperature of incoagulable gas is far below the condensing temperature of refrigerant, so phase does not occur for incoagulable gas
Become, be still gaseous state, in cumulative, the temperature more and more higher in the top of second separator 2；Refrigerant in mixed gas is condensed
Liquid is liquefied as, evaporation coil entrance is connected to by the 3rd filter 15 and choke valve 14；
D, when temperature is gradually dropped to the lower limit of setting value, magnetic valve of dropping a hint is opened and discharges air by blowdown piping 6,
The incoagulable gas of mixing enters second separator 2 again simultaneously, and temperature rises therewith again, when temperature rises to the upper limit, temperature control
Device processed orders closed electromagnetic valve of dropping a hint again, and discharge process temporarily terminates, so circulation.
In the present embodiment, first separator 1 carries out the liquid refrigerant carried secretly in mixed gas first separation.Mainly
It is different using the density of mixed gas and liquid refrigerant, by inertia and gravity principle, makes the flow velocity and stream of mixed gas
Dynamic direction changes, and completes to separate for the first time with this；Second separator 2 is to utilize incoagulable gas and refrigerant in mixed gas
Condensation temperature difference to be cooled to rear refrigerant to be condensed into liquid incoagulable gas be still gaseous state.Low pressure refrigerant after throttling
After the heat of the higher mixed gas of liquid absorption temperature, become the air entry that gaseous refrigerant returns to refrigeration compressor.Do not coagulate
After part sensible heat to be passed to property gas the low pressure refrigerant liquid in pipe by evaporation coil, two are still stayed in the form of a vapor
The top of secondary separator 2；Meanwhile latent heat and part sensible heat are passed through evaporation coil by the gaseous refrigerant of entrained with mixed gas
The low pressure refrigerant liquid in pipe is passed to, becomes the liquid refrigerant of supercooling, certainly, also has fraction gaseous refrigerant not have
It is condensed, stays in the top of second separator 2, incoagulable gas is different with refrigerant vapour proportion and forms lamination.
Incoagulable gas discharge method mainly includes the following steps that:
A, incoagulable gas enters the bottom of second separator 2 by the first top of separator 1 through the first check valve 9, together
When, the high pressure refrigerant liquid that reservoir is discharged in refrigeration system enters high-pressure liquid line 4 and become by the first temperature-sensing valve 10
For low pressure refrigerant liquid, and enter in the evaporation coil in second separator 2；
B, the first temperature-sensing valve 10 experiences the degree of superheat of evaporation coil outlet, and supplements liquid refrigerant on demand to secondary point
From device 2, the heat that liquid refrigerant absorbs incoagulable gas by cooling coil becomes steam, into refrigeration compressor air suction
Mouthful, incoagulable gas is not condensed into liquid, the top of second separator 2 in a gaseous form be present；
C, the liquid level of the liquid refrigerant in second separator 2 changes with ball float plunger b change, as ball float plunger b
When being matched with the valve seat c at the top of second separator 2, incoagulable gas will be exhausted from system；
D, the pressure in second separator 2 is higher than 80psig, and the temperature in second separator 2 is equal to or less than 40 ℉,
Incoagulable gas is discharged into ammonia through blowdown piping 6 by the second thermostatic expansion valve 24 and the second check valve 23 and absorbs water receptacle 7；
E, after incoagulable gas discharge, liquid level of the liquid refrigerant in second separator 2 rises, and incoagulable gas removes
When, valve seat that ball float plunger b is risen on ball float plunger b, emptying process terminates；
F, the refrigerant liquid condensed out from mixed gas returns to secondary point by the 3rd filter 15 and choke valve
From the low-pressure inlet of the evaporation coil of device 2, for cooling down mixed gas.
Structural principle of the present invention is simple, can effectively reduce the condensing pressure of refrigeration system, increases refrigerating capacity, saves electricity
Consumption, leakage of the refrigerant to environment is reduced, it is simple to operate compared with traditional horizontal quadruple pipe air-discharging device, and can realize certainly
Dynamic control, enables a system to energy-efficient operation, direct economic benefit is produced in system operation.
Above-described embodiment is presently preferred embodiments of the present invention, is not the limitation to technical solution of the present invention, as long as
The technical scheme that can be realized on the basis of above-described embodiment without creative work, it is regarded as falling into patent of the present invention
Rights protection scope in.
Claims (3)
- A kind of 1. automatic evacuation gas device, it is characterised in that：Mainly include first separator, second separator, mixed gas pipeline, High-pressure liquid line, suction line, blowdown piping and ammonia absorb water receptacle,The mixed gas pipeline, the high-pressure liquid line connect turborefrigerator respectively,The first separator upper end connects the mixed gas pipeline by first filter, and top is spherical unidirectional by first Valve connects the second separator bottom, and the high-pressure liquid line connects the secondary separation by the first thermostatic expansion valve The ammonia is connected by the blowdown piping in the evaporation coil of device, at the top of the second separator and absorbs water receptacle,The first separator bottom is provided with liquid-sighting glass and the second filter, and by the first check valve, the second check valve and 3rd filter connects the second separator,Ball float plunger and valve seat are provided with inside the second separator, top is provided with 300psid pressure safety valves, and passes through 225psid check-valves connects suction line, and 225psid check-valves side sets pressure gauge, and second separator bottom is additionally provided with directly Logical stop valve, be provided between the second separator and the blowdown piping incoagulable gas stop valve, the second ball valve, Second thermostatic expansion valve and 1psid check-valves, the second separator are provided with temperature controller, also set on the blowdown piping Air solenoid valve is put, temperature controller connects magnetic valve of dropping a hint.
- 2. realize a kind of application method of automatic evacuation gas device according to claim 1, it is characterised in that：Device of dropping a hint is certainly Prosecutor method mainly includes the following steps that：A, the mixed gas of turborefrigerator discharge enters first separator by mixed gas pipeline, is exchanged heat in first separator Coil pipe cools to liquid refrigerant；B, it is divided into refrigerant vapour and incoagulable gas after cooling, refrigerant vapour, which is condensed, to be discharged into evaporation coil and enter Mouthful, incoagulable gas accumulates in the top of second separator in a gaseous form；C, the sensible heat that air cooling is released is much smaller than the latent heat released during refrigerant liquefaction, and air is not undergone phase transition, and is still Gaseous state, air is cumulative at the top of second separator, temperature more and more higher, and temperature controller controls magnetic valve pass of dropping a hint Close, temperature reduces；D, when temperature is gradually dropped to the lower limit of setting value, magnetic valve of dropping a hint is opened and discharges air by blowdown piping, simultaneously The incoagulable gas of mixing enters second separator again, and temperature rises therewith again, and when temperature rises to the upper limit, temperature controller is again Closed electromagnetic valve of dropping a hint is ordered, discharge process temporarily terminates, so circulation.
- 3. realize a kind of application method of automatic evacuation gas device according to claim 1, it is characterised in that：Incoagulable gas Discharge method mainly includes the following steps that：A, incoagulable gas enters the bottom of second separator by the first ball valve at the top of first separator, meanwhile, The refrigerant liquid of the high pressure of turborefrigerator discharge enters high-pressure liquid line and is changed into low pressure by the first thermostatic expansion valve Refrigerant liquid, and the evaporation coil entered in second separator；B, the first thermostatic expansion valve experiences the degree of superheat of evaporation coil outlet, and supplements liquid refrigerant on demand to secondary separation Device, liquid refrigerant are absorbed the heat of incoagulable gas by cooling coil, become steam, into the compressor of turborefrigerator Air entry, incoagulable gas are not condensed into liquid, exist in a gaseous form at the top of second separator；C, the liquid level of the liquid refrigerant in second separator changes with the change of ball float plunger, when ball float plunger and secondary point When being matched from the valve seat at the top of device, incoagulable gas will be exhausted from system；D, the pressure in second separator is higher than 80psig, and the temperature in second separator is equal to or less than 40 °F, incoagulability Gas is discharged into ammonia through blowdown piping by the second thermostatic expansion valve and the second ball valve and absorbs water receptacle；E, when incoagulable gas discharges, liquid level of the liquid refrigerant in second separator rises, and when incoagulable gas removes, floats The valve seat that ball plunger is risen on ball float plunger, emptying process terminate；F, the refrigerant liquid condensed out from incoagulable gas is leaked back into the steaming of second separator by the 3rd filter The low-pressure inlet of quotation pipe, for condensing the incoagulable gas of coming in.
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| CN201510912073.2A CN105509378B (en) | 2015-12-11 | 2015-12-11 | A kind of automatic evacuation gas device and application method |
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| CN201510912073.2A CN105509378B (en) | 2015-12-11 | 2015-12-11 | A kind of automatic evacuation gas device and application method |
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| CN105509378A CN105509378A (en) | 2016-04-20 |
| CN105509378B true CN105509378B (en) | 2018-03-09 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568245B (en) * | 2016-10-30 | 2019-10-22 | 广州市粤联水产制冷工程有限公司 | Automatic evacuation gas device |
| CN110822774A (en) * | 2018-08-09 | 2020-02-21 | 麦克维尔空调制冷(武汉)有限公司 | Refrigerant purification system and heat exchange system comprising same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2027123C1 (en) * | 1991-01-22 | 1995-01-20 | Краснодарский научно-исследовательский центр хранения и переработки сельскохозяйственной продукции | Reactor-settler of ammonia refrigerating plant |
| CN201209983Y (en) * | 2008-05-12 | 2009-03-18 | 上海海事大学 | Non-condensable gas separation plant of novel ammine refrigeration system |
| CN102269491A (en) * | 2010-06-07 | 2011-12-07 | 四川空分设备(集团)有限责任公司 | Noncondensable gas separation and refrigerant recycling device and method for refrigerating system |
| CN204830358U (en) * | 2015-08-21 | 2015-12-02 | 广州永诚制冷设备有限公司 | Air conditioning unit is congealing nature gas outgoing device not |
-
2015
- 2015-12-11 CN CN201510912073.2A patent/CN105509378B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2027123C1 (en) * | 1991-01-22 | 1995-01-20 | Краснодарский научно-исследовательский центр хранения и переработки сельскохозяйственной продукции | Reactor-settler of ammonia refrigerating plant |
| CN201209983Y (en) * | 2008-05-12 | 2009-03-18 | 上海海事大学 | Non-condensable gas separation plant of novel ammine refrigeration system |
| CN102269491A (en) * | 2010-06-07 | 2011-12-07 | 四川空分设备(集团)有限责任公司 | Noncondensable gas separation and refrigerant recycling device and method for refrigerating system |
| CN204830358U (en) * | 2015-08-21 | 2015-12-02 | 广州永诚制冷设备有限公司 | Air conditioning unit is congealing nature gas outgoing device not |
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