CN208458298U - A kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit - Google Patents
A kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit Download PDFInfo
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- CN208458298U CN208458298U CN201821079938.7U CN201821079938U CN208458298U CN 208458298 U CN208458298 U CN 208458298U CN 201821079938 U CN201821079938 U CN 201821079938U CN 208458298 U CN208458298 U CN 208458298U
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Abstract
The utility model provides a kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit, in every grade of refrigeration system, the first condensing circuit of composition is sequentially connected including the first compressor, condenser, the first liquid storage device, thermal siphon heat exchanger, the first valve, the first expansion valve, the first evaporator, the second valve, the first gas-liquid separator；Thermal siphon heat exchanger, third valve, the first evaporator, the 4th valve are sequentially connected the first Paleocoenosis fossil stratum of composition.Defrosting is carried out using the evaporator of refrigeration system, temperature keeps 30 DEG C substantially, for the oil gas as fuel gas, improves its safety.The thermal siphon mode to exchange heat simultaneously using passive type is risen by evaporation, is condensed circulation in dirty mode, is brought the cooling capacity inside frost to liquid pipe.The degree of superheat for improving liquid pipe simultaneously carries out improving refrigeration system Energy Efficiency Ratio.Since the utility model is not involved with refrigerant bypass, cause to have little effect the performance of refrigeration system.
Description
Technical field
This patent is related to petroleum vapor recovery field, and in particular to a kind of heat siphon type defrosting binary channels petroleum vapor recovery freezing machine
Group.
Background technique
The exhaust of oil standard for reaching national regulation must install oil-gas recovery processing device to the lighter hydrocarbons group in oil gas
It point is recycled, existing oil vapor treatment method has condensation method, absorption process, absorption method and four kinds of embrane method.Wherein, condensation method
It is essential in petroleum vapor recovery link as high concentration pre-treating technology, but be inconvenient to that complexity is arranged since petroleum vapor recovery is preposition
De- density component technique, can generally existing frosting problem.It is cold for the petroleum vapor recovery occasion of the long-plays such as shipment and tank field
Solidifying unit needs are designed as condensing the function with defrosting simultaneously.
Application No. is 201210181207.4 patents to provide staged refrigeration system and the refrigeration side of a kind of petroleum vapor recovery
The Defrost method of method, the patent is: refrigerant is discharged high-temperature high-pressure refrigerant after the first compressor compresses of high temperature level-one, then into
Enter the A mouth of four-way reversing valve, is then flowed out through D mouthfuls, high-temperature high-pressure refrigerant is directly entered level-one oil-gas condenser, with low temperature
The heat exchange of level-one oil-gas condenser, to achieve the purpose that defrosting, for this patent using four-way valve commutation heat pump method, system pipeline is non-
It is often complicated, while defrosting temperature is excessively high, since oil gas is fuel gas, so be easy to causeing the insecurity of equipment.
Summary of the invention
To solve the above problems, this patent provides a kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit, use
The evaporator of refrigeration system carries out defrosting, and structure is simple, and its defrosting temperature is lower.
A kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit, including at least one level refrigeration system, described in every grade
Refrigeration system includes at least the first compressor, condenser, the first liquid storage device, the first expansion valve, the first evaporator and the first gas-liquid
Separator, first compressor, condenser, the first liquid storage device, the first expansion valve, the first evaporator, the first gas-liquid separator
It is sequentially connected with the first compressor, gas channel inlet pipeline is steamed by first that the first main valve connects first order refrigeration system
Device is sent out, the first evaporator of refrigeration systems at different levels is sequentially connected, and further includes the first valve, the in every grade of refrigeration system
Two valves, third valve, the 4th valve；Thermal siphon heat exchanger is connected between condenser and the first evaporator, the first evaporator
Position is higher than thermal siphon heat exchanger；First compressor, condenser, the first liquid storage device, thermal siphon heat exchanger, the first valve, first
Expansion valve, the first evaporator, the second valve, the first gas-liquid separator, which are sequentially connected, constitutes the first condensing circuit；Thermal siphon heat exchange
Device, third valve, the first evaporator, the 4th valve, which are sequentially connected, constitutes the first Paleocoenosis fossil stratum.
This patent is a kind of petroleum vapor recovery unit, it includes at least one level refrigeration system.Petroleum vapor recovery needs very low temperature
Degree, so in order to improve the rate of recovery, refrigeration system is usually two-stage or more.In every grade of refrigeration system, the first compressor, condensation
Device, the first liquid storage device, thermal siphon heat exchanger, the first valve, the first expansion valve, the first evaporator, the second valve, the first gas-liquid point
It is sequentially connected from device and constitutes the first condensing circuit, the substance stored in the first liquid storage device is refrigerant, and refrigerant is in the first condensation
It is recycled in circuit.Also, gas channel inlet pipeline connects the first evaporator of first order refrigeration system by the first main valve,
First evaporator of refrigeration systems at different levels is sequentially connected.Open the first main valve, the first valve and the second valve, refrigeration system shape
At the first condensing circuit, oil gas enters in the first evaporator for arriving first the first refrigeration system from gas channel inlet tube, first
With refrigerant heat exchanger in evaporator, the recycling so that oil gas is condensed.If unit includes two-stage or the above refrigeration system of two-stage, that
Oil gas enters back into the first evaporator of rear stage refrigeration system, and the first condensing circuit in rear stage refrigeration system is opened
It opens, with refrigerant heat exchanger to the recycling that is condensed equally in the first evaporator.Since oil gas is in process of refrigerastion, water that the inside contains
Point, oil product heavy constituent etc. is possible to frosting due to temperature is low, influences using so the unit will carry out defrosting.It is main to close first
Valve, the first valve and the second valve open third valve and the 4th valve, in the case where obstructed oil gas, thermal siphon heat exchange
The first Paleocoenosis fossil stratum that device, third valve, the first evaporator, the 4th valve are sequentially connected composition is formed, and the first thermal siphon is returned
Road draws external heat and returns, and frost is melted away.Since the position of the first evaporator is higher than thermal siphon heat exchanger, refrigerant is by weight
Power and siphonage, refrigerant is evaporated in thermal siphon heat exchanger to be risen, and is flowed down in the first evaporator condensation.In refrigeration, high pressure
The temperature of fractional distilling tube and liquid pipe is above room temperature, and white temperature is very low, and even up to -70 DEG C, this patent utilizes thermal siphon
Phenomenon builds height difference, i.e. the position of the first evaporator is higher than thermal siphon heat exchanger, and cold thing is above, and hot thing is under
Face, so that it may which the heat exchange cycles that formation does not need extra power come out, and achieve the effect that energy saving defrosting.This patent is based on knot
The simple principle of structure improves energy utilization rate, and the cooling capacity of the heat and refrigeration system high pressure side that make full use of oil gas frosting carries out
Exchange, while internal circulation is formed by thermosyphon action using refrigerant remaining in evaporator, reduce four-way valve reversal valve
The generation of equal labyrinths is formed condensation heat defrosting, is improved the optimal operational condition of cold degree using frosting cooling capacity, energy-efficient,
Remove systematic jitters caused by common hot gas bypass defrosting from.The present apparatus can be run in all weather of the year, and be provided more
High stability and Energy Efficiency Ratio, the cold and hot amount generated in process of refrigerastion can be fully and rationally used, and energy conservation and environmental protection original is met
Then.Free energy mode is employed many times in the present apparatus: firstly, the heat of the frosting cooling capacity of gas channel and refrigeration system liquid pipe carries out
Recuperation of heat；Then, still eliminating using the refrigerant of internal residual by thermosyphon action self-loopa for recuperation of heat is driven
The mode pressurizeed or pumped drives, and it is required meet Natural regulation, without controller judge, improve system capacity adjusting
Stability.Place, this patent are designed to provide a kind of heat siphon type defrosting binary channels in view of above-mentioned deficiencies of the prior art
Petroleum vapor recovery condenses unit, carries out defrosting using the liquid pipe of refrigeration system, temperature keeps 30 DEG C substantially, for as combustible gas
The oil gas of body improves its safety.The thermal siphon mode to exchange heat simultaneously using passive type is risen by evaporation, is condensed dirty
Circulation, brings the cooling capacity inside frost to liquid pipe in mode.The degree of superheat for improving liquid pipe simultaneously carries out improving refrigeration system efficiency
Than.Since this patent is not involved with refrigerant bypass, cause to have little effect the performance of refrigeration system.
Further, every grade of refrigeration system further includes the 5th valve, the 6th valve, the 7th valve, the 8th valve, and
Two expansion valves；Second evaporator；The position of second evaporator is higher than thermal siphon heat exchanger；First compressor, condenser, the first storage
Liquid device, thermal siphon heat exchanger, the 5th valve, the second expansion valve, the second evaporator, the 6th valve, the first gas-liquid separator are successively
Connect and compose the second condensing circuit；Thermal siphon heat exchanger, the 7th valve, the second evaporator, the 8th valve are sequentially connected composition
Two Paleocoenosis fossil stratums；The gas channel inlet pipeline also passes through the second evaporation of the second main valve connection first order refrigeration system
Second evaporator of device, refrigeration systems at different levels is sequentially connected.This gas channel inlet tube passes through the first main valve and first order system
First evaporator of cooling system is connected to, and is also connected to by the second main valve with the second evaporator of first order refrigeration system.Second
Evaporator is similar to the first evaporator, and similitude is, the second evaporator not only participates in oil gas condensation in the second condensing circuit, but also
Defrosting is participated in the second siphon circuit.In the case that the first evaporator participates in defrosting in the first siphon circuit, first is main
Valve is to close, that is to say, that the first evaporator is obstructed oil gas, so that petroleum vapor recovery process is suspended, and is affected
At this moment the efficiency of petroleum vapor recovery, need to only open the second main valve, the 5th valve so this refrigeration system provides another channel
With the 6th valve, the second condensing circuit is formed, and oil gas and refrigerant is allowed to exchange heat in the second evaporator, so that oil gas is returned
Receive, this sample system can round-the-clock carry out petroleum vapor recovery, effectively increase the efficiency of petroleum vapor recovery.Equally, when second steams
When hair device participates in defrosting in the second siphon circuit, opens the first main valve, the first valve and the second valve, oil gas and be passed through first
It exchanges heat in evaporator with refrigerant, thus the recycling that is condensed.This system provides the first main valve and the second main valve is distinguished
The switching in two channels at place, when the first evaporator participates in oil gas condensation, the second evaporator defrosting；Second evaporator participation oil
When air cooling is solidifying, the first evaporator defrosting so alternately reaches longtime running effect.
Further, refrigeration system described at least one level is folding type cooling system, and the folding type cooling system also wraps
Include evaporative condenser, the second compressor, the second gas-liquid separator, the second liquid storage device and third expansion valve；First compressor, condensation
Device, the first liquid storage device, thermal siphon heat exchanger, third expansion valve, evaporative condenser, the first gas-liquid separator are sequentially connected composition and follow
Loop back path；Second compressor, evaporative condenser, the second liquid storage device, the first valve, the first expansion valve, the first evaporator, the second valve
Door, the second gas-liquid separator, which are sequentially connected, constitutes the first condensing circuit；Second compressor, evaporative condenser, the second liquid storage device,
Five valves, the second expansion valve, the second evaporator, the 6th valve, the second gas-liquid separator, which are sequentially connected, constitutes the second condensing circuit；
Thermal siphon heat exchanger, third valve, the first evaporator, the 4th valve, which are sequentially connected, constitutes the first Paleocoenosis fossil stratum；And first steams
The position for sending out device is higher than thermal siphon heat exchanger；Thermal siphon heat exchanger, the 7th valve, the second evaporator, the 8th valve are sequentially connected
Constitute the second Paleocoenosis fossil stratum；And second evaporator position be higher than thermal siphon heat exchanger.This system provides a kind of superposition type system
Cooling system, Cascade refrigeration cycle is with above-mentioned refrigeration cycle the difference lies in that Cascade refrigeration cycle is will be biggish total
The temperature difference is divided into two sections or several segments, and according to the suitable refrigerant circulation of every section of warm area selection, then they stack up,
The condensation load of low-temperature level is undertaken with the refrigerating capacity of high-temperature level, to obtain the mode of lower cryogenic temperature.It is high in this system
Warm grade system provides the cold source of evaporative condenser in the heat source and low-temperature level system of thermal siphon heat exchanger, and effect is to provide more
Low cold source is with the light hydrocarbon component in condensed oil-gas.Similarly, this system provides the first main valve and the second main valve distinguishes institute
Two channels switching, the first evaporator participate in oil gas condensation when, the second evaporator defrosting；Second evaporator participates in oil gas
When condensation, the first evaporator defrosting.
It further, further include the fuel reserve tank for being provided with liquidometer, the first evaporator and of every grade of refrigeration system
Two evaporators are connect with fuel reserve tank, and the fuel reserve tank is sequentially connected with oil transfer pump, motor-driven valve.Evaporator includes the first evaporator
The oil product to get off with the second evaporator condensation all converges in fuel reserve tank, monitors its liquid level by liquidometer, starting when reaching high liquid level
Oil transfer pump opens motor-driven valve, and oil product is conveyed to user and forms recycling；Oil transfer pump is closed when reaching low liquid level, closes motor-driven valve,
Stop oil transportation.In addition, it is also that can flow into oil storage tank that the substance to get off is melted in defrosting.
Further, including three-level refrigeration system, wherein third level refrigeration system is the folding type cooling system.Oil gas
Recycling needs very low temperature, so this system is using two-stage refrigeration system and level-one superposition type at this time in order to improve the rate of recovery
The concatenated mode of refrigeration system.Every grade of cooling condensation process is equipped with mutually independent refrigeration system, and each refrigeration system phase
Low temperature is produced for environment temperature.
The beneficial effect of this patent is that heat siphon type defrosting binary channels petroleum vapor recovery condensation unit includes binary channels oil
Autogenous cutting changes and oil product collection system, first order refrigeration system, second level refrigeration system and third level refrigeration system, wherein third system
Cooling system is folding type cooling system, provides lower cold source with the light hydrocarbon component in condensed oil-gas.It was run in oil gas condensation
Cheng Zhong, a channel carry out condensing recovery to oil gas, another channel then carries out defrosting, so alternately reach longtime running effect
Fruit.This patent is based on the simple principle of structure, improves energy utilization rate, makes full use of the heat of oil gas frosting and refrigeration system high
The cooling capacity of pressure side swaps, while forming internal circulation by thermosyphon action using refrigerant remaining in evaporator, subtracts
The generation of the labyrinths such as few four-way valve reversal valve is formed condensation heat defrosting, is improved the most good speed of Gao Lengdu using frosting cooling capacity
Row state, it is energy-efficient, remove systematic jitters caused by common hot gas bypass defrosting from.The present apparatus can be in all weather of the year
Operation, and higher stability and Energy Efficiency Ratio are provided, the cold and hot amount generated in process of refrigerastion can be fully and rationally used,
Meet energy conservation and environmental protection principle.Free energy mode is employed many times in the present apparatus: firstly, the frosting cooling capacity and refrigeration system of gas channel
The heat of liquid pipe carries out recuperation of heat；Then, the refrigerant for still using internal residual for driving recuperation of heat, passes through thermosyphon action
Self-loopa, the mode that eliminating will pressurize or pump drive, and it is required meet Natural regulation, without controller judge, improve
The stability that system capacity is adjusted.Place, this patent are designed to provide a kind of hot rainbow in view of above-mentioned deficiencies of the prior art
Suction defrosting binary channels petroleum vapor recovery condenses unit, carries out defrosting using the liquid pipe of refrigeration system, and temperature keeps 30 DEG C substantially,
For the oil gas as fuel gas, its safety is improved.The thermal siphon mode to exchange heat simultaneously using passive type, by evaporation
It rises, condenses circulation in dirty mode, bring the cooling capacity inside frost to liquid pipe.The degree of superheat for improving liquid pipe simultaneously, is mentioned
High refrigeration system Energy Efficiency Ratio.Due to this patent be not involved with refrigerant bypass, cause the performance to refrigeration system almost without
It influences.
Detailed description of the invention
Fig. 1 is the binary channels oil-gas switch of some embodiment of this patent and the structural schematic diagram of oil product collection system
Fig. 2 is the first order refrigeration system of some embodiment of this patent and the structural schematic diagram of second level refrigeration system
The structural schematic diagram of the folding type cooling system of some embodiment of Fig. 3 this patent
It include the first evaporator 001 in figure, the second evaporator 002, liquidometer 003, oil storage tank 004, motor-driven valve 005, defeated
Oil pump 006, the first main valve 011, the second main valve 012, third main valve 013, the 4th main valve 014；First compressor
101, condenser 102, the first liquid storage device 103, thermal siphon heat exchanger 104, the first expansion valve 106, the second expansion valve 108, first
Gas-liquid separator 109, the first valve 105, the second valve 114, third valve 110, the 4th valve 111, the 5th valve 107,
Six valves 115, the 7th valve 112, the 8th valve 113；Second compressor 201, evaporative condenser 202, third expansion valve 203,
Second liquid storage device 204, the second gas-liquid separator 205.
Specific embodiment
This patent is further described below in conjunction with attached drawing.
As shown in Figure 1, the binary channels oil-gas switch and oil product collection system include switching motor-driven valve, the first evaporator
001, the second evaporator 002, oil transfer pump 009, motor-driven valve 010, oil storage tank 008 and liquidometer 007.Wherein oil gas condensation divides A, B
Two channels.Wherein, the switching motor-driven valve on A channel is the first main valve 011 and third main valve 013；In channel B
Switching motor-driven valve is the second main valve 012 and the 4th main valve 014.The A channel, oil gas are successively passed through through the first main valve 011
Three the first evaporators 001 and third main valve 013 are crossed, the oil gas reheater of condensation unit is subsequently entered.The channel B, oil
Gas successively passes through three the second evaporators 002 and the 4th main valve 014 through the second main valve 012, subsequently enters condensation unit
Oil gas reheater.These first evaporators 001 and the second evaporator 002 condense out oil product and all come out by respective E mouthfuls, so
Converge afterwards in fuel reserve tank 004, its liquid level is monitored by liquidometer 003, starts oil transfer pump 006 when reaching high liquid level, open motor-driven valve
005, oil product is conveyed to user and forms recycling；Oil transfer pump 006 is closed when reaching low liquid level, closes motor-driven valve 005, is stopped defeated
Oil.
A kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit, including at least one level refrigeration system, as shown in Figure 1
Unit include three-level refrigeration system, the structural schematic diagram of first order refrigeration system is as shown in Fig. 2, first order refrigeration system includes
First compressor 101, condenser 102, the first liquid storage device 103, thermal siphon heat exchanger 104, the first valve 105, the first expansion valve
106, the first evaporator 001, the second valve 114, the first gas-liquid separator 109 are sequentially connected the first condensing circuit of composition；Heat
The first thermal siphon that siphon heat exchanger 104, third valve 110, the first evaporator 001, the 4th valve 111 are sequentially connected composition is returned
The position on road, the first evaporator 001 is higher than thermal siphon heat exchanger 104.
This patent is a kind of petroleum vapor recovery unit, the first compressor 101 that first order refrigeration system includes, condenser 102,
First liquid storage device 103, thermal siphon heat exchanger 104, the first valve 105, the first expansion valve 106, the first evaporator 001, the second valve
The 114, first gas-liquid separator 109 of door, which is sequentially connected, constitutes the first condensing circuit, and the substance stored in the first liquid storage device 103 is system
Cryogen, refrigerant recycle in the first condensing circuit.In addition, gas channel inlet pipeline passes through the first main valve 011 connection the
First evaporator 001 of level-one refrigeration system.Open the first main valve 011, the first valve 104 and the second valve 114, refrigeration system
System forms the first condensing circuit, and oil gas enters in the first evaporator 001 for arriving first the first refrigeration system from gas channel inlet tube,
With refrigerant heat exchanger in the first evaporator 001, the recycling so that oil gas is condensed, oil gas enters back into rear stage refrigeration system
In first evaporator 001, equally in the first evaporator 001 with refrigerant heat exchanger.Contained due to oil gas in process of refrigerastion, the inside
Moisture, oil product heavy constituent etc. are possible to frosting due to temperature is low, influence using, this when, close the first main valve 011, the
One valve 104 and the second valve 114 open third valve 110 and the 4th valve 111, in the case where obstructed oil gas, thermal siphon
Heat exchanger 104, third valve 110, the first evaporator 001, the 4th valve 111 are sequentially connected the first Paleocoenosis fossil stratum shape of composition
At the first Paleocoenosis fossil stratum draws external heat and returns, and frost is melted away.Since the position of the first evaporator 001 is higher than thermal siphon
Heat exchanger 104, refrigerant rely on gravity and siphonage, and refrigerant is evaporated in thermal siphon heat exchanger 104 to be risen, in the first evaporation
The condensation of device 001 flows down.In refrigeration, the temperature of high-pressure section condenser 102 and the first evaporator 001 is above room temperature, white
Temperature is very low, and even up to -70 DEG C, this patent utilizes thermal siphon phenomenon, builds height difference, i.e. the position of the first evaporator 001 is high
In thermal siphon heat exchanger 104, for cold thing above, hot thing is below, so that it may form the heat for not needing extra power
Amount exchange cycles come out, and achieve the effect that energy saving defrosting.This patent is based on the simple principle of structure, improves energy utilization rate, fills
Divide and swapped using the heat of oil gas frosting and the cooling capacity of refrigeration system high pressure side, while utilizing residual in the first evaporator 001
The refrigerant stayed forms internal circulation by thermosyphon action, reduces the generation of the labyrinths such as four-way valve reversal valve, is formed cold
It coagulates hot defrosting, improve the optimal operational condition of cold degree using frosting cooling capacity, it is energy-efficient, remove common hot gas bypass defrosting from and makes
At systematic jitters.The present apparatus can be run in all weather of the year, and provide higher stability and Energy Efficiency Ratio, be freezed
The cold and hot amount generated in journey can be fully and rationally used, and energy conservation and environmental protection principle is met.The free energy is employed many times in the present apparatus
Mode: firstly, the heat of the frosting cooling capacity of gas channel and refrigeration system liquid pipe carries out recuperation of heat；Then, recuperation of heat is driven
Still the refrigerant of internal residual is used, by thermosyphon action self-loopa, the mode that eliminating will pressurize or pump is driven, and
It is required to meet Natural regulation, judge without controller, improves the stability of system capacity adjusting.In view of the above-mentioned prior art
Shortcoming, this patent is designed to provide a kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit, using refrigeration
The liquid pipe of system carries out defrosting, and temperature keeps 30 DEG C substantially, for the oil gas as fuel gas, improves its safety.Together
Shi Huanre uses the thermal siphon mode of passive type, is risen by evaporation, circulation in dirty mode is condensed, by the cooling capacity inside frost
Bring liquid pipe.The degree of superheat for improving liquid pipe simultaneously carries out improving refrigeration system Energy Efficiency Ratio.Since this patent is not involved with system
Cryogen bypass, causes to have little effect the performance of refrigeration system.
Thermal siphon heat exchanger 104 shown in figure is shell and tube exchanger, be connected into the first condensing circuit connection be A mouthful and
Tube side between B mouthfuls, for passing through for high flow rate refrigerant；Be connected into the first Paleocoenosis fossil stratum is the shell side between C mouthfuls and D mouthfuls,
For making refrigerant free convection form siphonic effect.In first order refrigeration system, the first evaporator 001 was both condensed back to first
Participate in oil gas condensation in road, and participate in defrosting in the first siphon circuit, two ways only need by the first main valve 011,
The open and close control of first valve 104, the second valve 114, third valve 110 and the 4th valve 111.In the first main valve 011,
When one valve 104 and the second valve 114 are opened, refrigerant and oil gas in the first evaporator 001 exchange heat, so that oil gas is cold
It is solidifying；When third valve 110 and the 4th valve 111 are opened, the refrigerant condensation in the first evaporator 001 flows down.
First order refrigeration system further includes the 5th valve 107, the 6th valve 115, the 7th valve 112, the 8th valve 113,
Second expansion valve 108；Second evaporator 002；The position of second evaporator 002 is higher than thermal siphon heat exchanger 104；First compressor
101, condenser 102, the first liquid storage device 103, thermal siphon heat exchanger 104, the 5th valve 107, the second expansion valve 108, second steam
Hair device 002, the 6th valve 115, the first gas-liquid separator 109, which are sequentially connected, constitutes the second condensing circuit；Thermal siphon heat exchanger
104, the 7th valve 112, the second evaporator 002, the 8th valve 113, which are sequentially connected, constitutes the second Paleocoenosis fossil stratum.The oil gas
Channel entrance pipeline also passes through the second evaporator 002 of the second main valve 012 connection first order refrigeration system.Second evaporator
002 is similar to the first evaporator 001, and similitude is, both participation oil is gas-cooled the second evaporator 002 in the second condensing circuit
It is solidifying, and defrosting is participated in the second siphon circuit.When the first evaporator 001 participates in defrosting in the first siphon circuit the case where
Under, the first main valve 011 is to close, that is to say, that the first evaporator 001 is obstructed oil gas, so that petroleum vapor recovery mistake
Journey is suspended, and affects the efficiency of petroleum vapor recovery, so this refrigeration system provides another channel, at this moment, need to only open second
Main valve 012, the 5th valve 107 and the 6th valve 115, the second condensing circuit are formed, and allow oil gas and refrigerant in the second evaporation
Exchange heat in device 002 so that oil gas is recovered, this sample system can round-the-clock carry out petroleum vapor recovery, effectively increase
The efficiency of petroleum vapor recovery.Equally, when participating in defrosting in the second siphon circuit when the second evaporator 002, the first main valve is opened
011, the first valve 104 and the second valve 114, oil gas is passed through in the first evaporator 001 and exchanges heat with refrigerant, thus cold
Solidifying recycling.This system provides the switching in two channels where the first main valve 011 and the second main valve 012 difference, and first steams
When sending out the participation oil gas condensation of device 001,002 defrosting of the second evaporator；When second evaporator 002 participates in oil gas condensation, the first evaporation
001 defrosting of device so alternately reaches longtime running effect.
The second level refrigeration system of the unit is identical as first order refrigerant system configurations, and the first of second level refrigeration system is steamed
Hair device 001 is connected with the first evaporator 001 of first order refrigeration system, the second evaporator 002 of second level refrigeration system and the
Second evaporator 002 of level-one refrigeration system is connected.
As shown in figure 3, the third level refrigeration system of the unit is folding type cooling system, the folding type cooling system is also
Including evaporative condenser 202, the second compressor 201, the second gas-liquid separator 205, the second liquid storage device 204 and third expansion valve
203；First compressor 101, condenser 102, the first liquid storage device 103, thermal siphon heat exchanger 104, third expansion valve 203, evaporation
Condenser 202, the first gas-liquid separator 109 are sequentially connected composition circulation loop；Second compressor 201, evaporative condenser 202,
Second liquid storage device 204, the first valve 105, the first expansion valve 106, the first evaporator 001, the second valve 114, the second gas-liquid point
It is sequentially connected from device 308 and constitutes the first condensing circuit；Second compressor 201, evaporative condenser 202, the second liquid storage device 204,
Five valves 107, the second expansion valve 108, the second evaporator 002, the 6th valve 115, the second gas-liquid separator 205 are sequentially connected structure
At the second condensing circuit；Thermal siphon heat exchanger 104, third valve 110, the first evaporator 001, the 4th valve 111 are sequentially connected
Constitute the first Paleocoenosis fossil stratum；And first evaporator 001 position be higher than thermal siphon heat exchanger 104；Thermal siphon heat exchanger 104,
7th valve 112, the second evaporator 002, the 8th valve 113, which are sequentially connected, constitutes the second Paleocoenosis fossil stratum；And second evaporator
002 position is higher than thermal siphon heat exchanger 104.This system provides a kind of folding type cooling system, Cascade refrigeration cycle with it is upper
The refrigeration cycle stated the difference lies in that Cascade refrigeration cycle is that biggish total temperature difference is divided into two sections or several segments, root
According to the suitable refrigerant circulation of every section of warm area selection, then they are stacked up, is undertaken with the refrigerating capacity of high-temperature level low
The condensation load of warm grade, to obtain the mode of lower cryogenic temperature.This system includes the high-temperature level of the first compressor 101 driving
The low-temperature level circulation of circulation and the driving of the second compressor 201.High-temperature level circulation provides the heat source of thermal siphon heat exchanger 104 and low
The cold source of evaporative condenser 202, effect are to provide lower cold source with the light hydrocarbon component in condensed oil-gas in warm grade circulation.It is high
The refrigerant that low-temperature zone uses is different, it is preferable that high-temperature level is using refrigerant R404A by HFC125, HFC-134a and HFC-143
It mixes, boiling point is slightly higher；Low-temperature level uses refrigerant R23, and boiling point is relatively low.Similarly, this system provides the first main valve 011
With the switching in two channels where the second main valve 012 difference, when the first evaporator 001 participates in oil gas condensation, the second evaporation
002 defrosting of device；When second evaporator 002 participates in oil gas condensation, 001 defrosting of the first evaporator.
As shown in Figure 1, the unit includes three-level refrigeration system, wherein third level refrigeration system is the cascade refrigeration system
System.Petroleum vapor recovery needs very low temperature, such as produce -70 DEG C from 30 DEG C of environment temperature, needs under the so big temperature difference
Between transition refrigeration cycle.So improving the rate of recovery to reach very low temperature, this system is using two-stage refrigeration system at this time
System and the concatenated mode of level-one folding type cooling system.Every grade of cooling condensation process is equipped with mutually independent refrigeration system, and every
A refrigeration system produces low temperature both relative to environment temperature.
This patent includes that heat siphon type defrosting binary channels petroleum vapor recovery condensation unit shown in FIG. 1 includes that binary channels oil gas is cut
It changes and oil product collection system, two first order refrigeration systems shown in Fig. 2 and third level refrigeration system shown in Fig. 3, wherein the
Three refrigeration systems are folding type cooling system, provide lower cold source with the light hydrocarbon component in condensed oil-gas.It is transported in oil gas condensation
During row, a channel carries out condensing recovery to oil gas, another channel then carries out defrosting, so alternately reaches longtime running
Effect.This patent is based on the simple principle of structure, improves energy utilization rate, makes full use of the heat and refrigeration system of oil gas frosting
On high-tension side cooling capacity swaps, while forming internal circulation by thermosyphon action using refrigerant remaining in evaporator,
The generation of the labyrinths such as four-way valve reversal valve is reduced, condensation heat defrosting is formed, improves the most good speed of cold degree using frosting cooling capacity
Row state, it is energy-efficient, remove systematic jitters caused by common hot gas bypass defrosting from.The present apparatus can be in all weather of the year
Operation, and higher stability and Energy Efficiency Ratio are provided, the cold and hot amount generated in process of refrigerastion can be fully and rationally used,
Meet energy conservation and environmental protection principle.Free energy mode is employed many times in the present apparatus: firstly, the frosting cooling capacity and refrigeration system of gas channel
The heat of liquid pipe carries out recuperation of heat；Then, the refrigerant for still using internal residual for driving recuperation of heat, passes through thermosyphon action
Self-loopa, the mode that eliminating will pressurize or pump drive, and it is required meet Natural regulation, without controller judge, improve
The stability that system capacity is adjusted.Place, this patent are designed to provide a kind of hot rainbow in view of above-mentioned deficiencies of the prior art
Suction defrosting binary channels petroleum vapor recovery condenses unit, carries out defrosting using the liquid pipe of refrigeration system, and temperature keeps 30 DEG C substantially,
For the oil gas as fuel gas, its safety is improved.The thermal siphon mode to exchange heat simultaneously using passive type, by evaporation
It rises, condenses circulation in dirty mode, bring the cooling capacity inside frost to liquid pipe.The degree of superheat for improving liquid pipe simultaneously, is mentioned
High refrigeration system Energy Efficiency Ratio.Due to this patent be not involved with refrigerant bypass, cause the performance to refrigeration system almost without
It influences.
Claims (5)
1. a kind of heat siphon type defrosting binary channels petroleum vapor recovery condenses unit, including at least one level refrigeration system, every grade of system
Cooling system includes at least the first compressor (101), condenser (102), the first liquid storage device (103), the first expansion valve (106), the
One evaporator (001) and the first gas-liquid separator (109), first compressor (101), condenser (102), the first liquid storage device
(103), the first expansion valve (106), the first evaporator (001), the first gas-liquid separator (109) and the first compressor (101) according to
Secondary connection, gas channel inlet pipeline connect the first evaporator of first order refrigeration system by the first main valve (011)
(001), the first evaporator (001) of refrigeration systems at different levels is sequentially connected, which is characterized in that
It further include the first valve (105), the second valve (114), third valve (110), the 4th in every grade of refrigeration system
Valve (111)；
Thermal siphon heat exchanger (104) are connected between condenser (102) and the first evaporator (001), the position of the first evaporator (001)
It sets and is higher than thermal siphon heat exchanger (104)；
First compressor (101), condenser (102), the first liquid storage device (103), thermal siphon heat exchanger (104), the first valve
(105), the first expansion valve (106), the first evaporator (001), the second valve (114), the first gas-liquid separator (109) successively connect
It connects and constitutes the first condensing circuit；Thermal siphon heat exchanger (104), third valve (110), the first evaporator (001), the 4th valve
(111) it is sequentially connected and constitutes the first Paleocoenosis fossil stratum.
2. a kind of heat siphon type defrosting binary channels petroleum vapor recovery according to claim 1 condenses unit, which is characterized in that every
The grade refrigeration system further includes the 5th valve (107), the 6th valve (115), the 7th valve (112), the 8th valve (113),
Second expansion valve (108) and the second evaporator (002)；The position of second evaporator (002) is higher than thermal siphon heat exchanger
(104)；
First compressor (101), condenser (102), the first liquid storage device (103), thermal siphon heat exchanger (104), the 5th valve
(107), the second expansion valve (108), the second evaporator (002), the 6th valve (115), the first gas-liquid separator (109) successively connect
It connects and constitutes the second condensing circuit；Thermal siphon heat exchanger (104), the 7th valve (112), the second evaporator (002), the 8th valve
(113) it is sequentially connected and constitutes the second Paleocoenosis fossil stratum；
The gas channel inlet pipeline also passes through the second evaporator of the second main valve (012) connection first order refrigeration system
(002), the second evaporator (002) of refrigeration systems at different levels is sequentially connected.
3. a kind of heat siphon type defrosting binary channels petroleum vapor recovery according to claim 2 condenses unit, which is characterized in that extremely
Refrigeration system described in few level-one is folding type cooling system, and the folding type cooling system further includes evaporative condenser (202), the
Two compressors (201), the second gas-liquid separator (205), the second liquid storage device (204) and third expansion valve (203)；
First compressor (101), condenser (102), the first liquid storage device (103), thermal siphon heat exchanger (104), third expansion valve
(203), evaporative condenser (202), the first gas-liquid separator (109) are sequentially connected composition circulation loop；
Second compressor (201), evaporative condenser (202), the second liquid storage device (204), the first valve (105), the first expansion valve
(106), the first evaporator (001), the second valve (114), the second gas-liquid separator (205) are sequentially connected composition first and are condensed back to
Road；
Second compressor (201), evaporative condenser (202), the second liquid storage device (204), the 5th valve (107), the second expansion valve
(108), the second evaporator (002), the 6th valve (115), the second gas-liquid separator (205) are sequentially connected composition second and are condensed back to
Road；
Thermal siphon heat exchanger (104), third valve (110), the first evaporator (001), the 4th valve (111) are sequentially connected composition
First Paleocoenosis fossil stratum；And first evaporator (001) position be higher than thermal siphon heat exchanger (104)；
Thermal siphon heat exchanger (104), the 7th valve (112), the second evaporator (002), the 8th valve (113) are sequentially connected composition
Second Paleocoenosis fossil stratum；And second evaporator (002) position be higher than thermal siphon heat exchanger (104).
4. a kind of heat siphon type defrosting binary channels petroleum vapor recovery according to claim 3 condenses unit, which is characterized in that also
The first evaporator (001) and second of fuel reserve tank (004) including being provided with liquidometer (003), every grade of refrigeration system steams
Hair device (002) is connect with fuel reserve tank (004), and the fuel reserve tank (004) successively connects with oil transfer pump (005), motor-driven valve (006)
It connects.
5. a kind of heat siphon type defrosting binary channels petroleum vapor recovery according to claim 4 condenses unit, which is characterized in that packet
Three-level refrigeration system is included, wherein third level refrigeration system is the folding type cooling system.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731292A (en) * | 2018-07-09 | 2018-11-02 | 广东申菱环境系统股份有限公司 | A kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit |
| CN109847399A (en) * | 2019-04-11 | 2019-06-07 | 代金霞 | A kind of volatile materials condensation recycling method and device to be run without interruption using gas self heat defrosting |
| CN110595245A (en) * | 2019-08-06 | 2019-12-20 | 江苏新久扬环保设备科技有限公司 | Online fast switching double-channel heat exchange system and working method |
| CN112891980A (en) * | 2021-01-20 | 2021-06-04 | 广东申菱环境系统股份有限公司 | Oil gas recovery device and control method |
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2018
- 2018-07-09 CN CN201821079938.7U patent/CN208458298U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731292A (en) * | 2018-07-09 | 2018-11-02 | 广东申菱环境系统股份有限公司 | A kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit |
| CN109847399A (en) * | 2019-04-11 | 2019-06-07 | 代金霞 | A kind of volatile materials condensation recycling method and device to be run without interruption using gas self heat defrosting |
| CN110595245A (en) * | 2019-08-06 | 2019-12-20 | 江苏新久扬环保设备科技有限公司 | Online fast switching double-channel heat exchange system and working method |
| CN112891980A (en) * | 2021-01-20 | 2021-06-04 | 广东申菱环境系统股份有限公司 | Oil gas recovery device and control method |
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