CN112891980A - Oil gas recovery device and control method - Google Patents
Oil gas recovery device and control method Download PDFInfo
- Publication number
- CN112891980A CN112891980A CN202110074919.5A CN202110074919A CN112891980A CN 112891980 A CN112891980 A CN 112891980A CN 202110074919 A CN202110074919 A CN 202110074919A CN 112891980 A CN112891980 A CN 112891980A
- Authority
- CN
- China
- Prior art keywords
- oil
- defrosting
- gas condenser
- switch valve
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0033—Other features
- B01D5/0036—Multiple-effect condensation; Fractional condensation
-
- 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
- F25B43/006—Accumulators
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses an oil gas recovery device and a control method, wherein the oil gas recovery device comprises a control device, a first oil gas condenser, a second oil gas condenser, a first refrigerating mechanism, a second refrigerating mechanism, a defrosting mechanism and a tail gas heater; the first oil gas condenser, the second oil gas condenser and the tail gas heater are sequentially arranged along the oil gas inlet and outlet direction; the first refrigerating mechanism is used for cooling the secondary refrigerant returned by the first oil-gas condenser, the second refrigerating mechanism is used for cooling the secondary refrigerant returned by the second oil-gas condenser, the defrosting mechanism is used for providing defrosting agent for the second oil-gas condenser, and the defrosting mechanism comprises a defrosting liquid tank which is connected with the upper part of the second liquid tank through a balance pipe; the application discloses oil gas recovery device, when the liquid level in the white liquid jar of changing is too high, change in the white agent in the white liquid jar can enter into the second liquid storage tank voluntarily to the liquid measure relatively stable between second liquid storage tank and the white liquid jar of changing is maintained.
Description
Technical Field
The invention relates to the technical field of oil gas recovery processing, in particular to an oil gas recovery device and a control method.
Background
In the existing oil gas recovery device, a secondary refrigerant can condense oil gas and can also serve as defrosting agent to defrost an oil gas condenser, but in the switching process of the defrosting mode and the refrigerating mode of the oil gas condenser, although the secondary refrigerant and the defrosting agent are the same medium, the density of the secondary refrigerant and the defrosting agent can be different along with the difference of temperature, along with the increase of the mode switching times, the secondary refrigerant in a liquid storage tank of a refrigerating mechanism can be continuously reduced, the defrosting agent in a defrosting liquid tank of the defrosting mechanism can be continuously increased, the problem of unbalanced liquid quantity of the oil gas recovery device can be caused, and if the amount of the defrosting agent in the defrosting liquid tank is too much, the working effect of the cold-carrying type oil gas recovery device can be influenced.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, an object of the present invention is to provide an oil gas recovery device, wherein when the liquid level in the defrosting liquid tank is too high, the defrosting agent flows into the second liquid tank along the balance pipe, so as to maintain the liquid level between the second liquid tank and the defrosting liquid tank relatively stable, and improve the stability and reliability of the oil gas recovery device during operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
an oil gas recovery device comprises a control device, a first oil gas condenser, a second liquid storage tank, a first refrigerating mechanism, a second refrigerating mechanism, a defrosting mechanism and a tail gas heater, wherein the first refrigerating mechanism, the second refrigerating mechanism, the defrosting mechanism and the tail gas heater are respectively and electrically connected with the control device; the first oil gas condenser, the second oil gas condenser and the tail gas heater are sequentially arranged along the oil gas inlet and outlet direction; the first refrigerating mechanism is used for cooling the secondary refrigerant returned by the first oil-gas condenser, the second refrigerating mechanism is used for cooling the secondary refrigerant returned by the second oil-gas condenser, and a secondary refrigerant output port of the second refrigerating mechanism is connected with the second oil-gas condenser through the second liquid storage tank; the defrosting mechanism is connected with the external heat source supply mechanism, the defrosting mechanism provides defrosting agent for the second oil-gas condenser and the tail gas heater, and the defrosting mechanism comprises a defrosting liquid tank which is connected with the upper part of the second liquid tank through a balance pipe.
In the oil gas recovery device, the first refrigerating mechanism comprises a first liquid storage tank, the first liquid storage tank is used for storing secondary refrigerant cooled by the first refrigerating mechanism, and the first liquid storage tank is connected with an input port of the first oil gas condenser.
The oil gas recovery device further comprises a first switch valve, a second switch valve, a third switch valve and a fourth switch valve which are electrically connected with the control device respectively, a third interface of the second oil gas condenser is connected with a secondary refrigerant input port of the second refrigeration mechanism through the first switch valve, and a fourth interface of the second oil gas condenser is connected with an output port of the second liquid storage tank through the second switch valve; the first switch valve and the second switch valve are respectively electrically connected with the control device; and a third interface of the second oil-gas condenser is connected with a defrosting agent input port of the defrosting mechanism through the third switch valve, and a fourth interface of the second oil-gas condenser is connected with a defrosting agent output port of the defrosting liquid tank through the fourth switch valve.
The oil gas recovery device also comprises a third refrigerating mechanism, a third oil gas condenser and a third liquid storage tank, wherein the first oil gas condenser, the second oil gas condenser, the third oil gas condenser and the tail gas heater are sequentially arranged along the inlet and outlet direction of oil gas; the third refrigerating mechanism is used for cooling the secondary refrigerant returned by the third oil-gas condenser, and conveying the cooled secondary refrigerant to a third liquid storage tank, and the third liquid storage tank returns the secondary refrigerant to the third oil-gas condenser; the defrosting mechanism is used for conveying defrosting agent to the third oil-gas condenser; the defrosting liquid tank is connected with the upper part of the third liquid tank through the balance pipe.
The oil gas recovery device further comprises a fifth switch valve, a sixth switch valve, a seventh switch valve and an eighth switch valve which are respectively electrically connected with the control device, a third interface of the third oil gas condenser is connected with an input port of the third refrigeration mechanism through the fifth switch valve, and a fourth interface of the third oil gas condenser is connected with an output port of the third liquid storage tank through the sixth switch valve; and a third interface of the third oil-gas condenser is connected with an input port of the defrosting mechanism through the seventh switch valve, and a fourth interface of the third oil-gas condenser is connected with an output port of the defrosting mechanism through the eighth switch valve.
The oil gas recovery device further comprises a fourth oil gas condenser, a fifth oil gas condenser, and a ninth switch valve, a tenth switch valve, an eleventh switch valve, a twelfth switch valve, a thirteenth switch valve, a fourteenth switch valve, a fifteenth switch valve, a sixteenth switch valve, a seventeenth switch valve and an eighteenth switch valve which are respectively electrically connected with the control device; the fourth oil gas condenser is used for further cooling the oil gas output by the first oil gas condenser, and the fifth oil gas condenser is used for further cooling the oil gas output by the fourth oil gas condenser; the third oil-gas condenser is connected with the tail gas heater through the seventeenth switch valve, and the fifth oil-gas condenser is connected with the tail gas heater through the eighteenth switch valve; a third interface of the fourth oil-gas condenser is connected with a secondary refrigerant input port of the second refrigerating mechanism through the ninth switch valve, and a third interface of the fourth oil-gas condenser is connected with a defrosting agent input port of the defrosting mechanism through the eleventh switch valve; a fourth interface of the fourth oil-gas condenser is connected with an output port of the second liquid storage tank through the tenth switch valve, and the fourth interface of the fourth oil-gas condenser is connected with a defrosting agent output port of the defrosting mechanism through the twelfth switch valve; a third interface of the fifth oil-gas condenser is connected with a secondary refrigerant input port of the third refrigerating mechanism through the thirteenth switching valve, and a third interface of the fifth oil-gas condenser is connected with a defrosting agent input port of the defrosting mechanism through the fifteenth switching valve; a fourth interface of the fifth oil-gas condenser is connected with an output port of the third liquid storage tank through the fourteenth switching valve, and a fourth interface of the fifth oil-gas condenser is connected with a defrosting agent output port of the defrosting mechanism through the sixteenth switching valve; the second refrigerating mechanism is used for cooling the secondary refrigerant returned by the fourth oil-gas condenser, the third refrigerating mechanism is used for cooling the secondary refrigerant returned by the fifth oil-gas condenser, and the defrosting mechanism is used for heating the defrosting agent returned by the fourth oil-gas condenser and the fifth oil-gas condenser.
In the oil gas recovery device, the defrosting mechanism further comprises a defrosting heat exchanger and a defrosting agent pump, a third interface of the second oil gas condenser is connected with a defrosting agent input port of the defrosting heat exchanger through the third switch valve, a defrosting agent output port of the defrosting heat exchanger is connected with an input port of a defrosting liquid tank, and an output port of the defrosting liquid tank is respectively connected with a fourth interface of the second oil gas condenser and a fourth interface of the third oil gas condenser through the defrosting agent pump; the defrosting heat exchanger is connected with an external heat source supply mechanism.
The oil gas recovery device further comprises an oil storage tank, wherein an input port of the oil storage tank is connected with a fifth interface of the first oil gas condenser, a fifth interface of the second oil gas condenser and a fifth interface of the tail gas heater respectively.
In the oil gas recovery device, a liquid level sensor is arranged in the defrosting liquid tank, a delivery pump is arranged on the balance pipe, and the liquid level sensor and the delivery pump are respectively electrically connected with the control device.
The invention also correspondingly provides a control method of the oil gas recovery device, which is used for realizing the working control of the oil gas recovery device as follows:
when the liquid level sensor feeds back a detection signal to the control device, the control device controls the conveying pump to start working, and the defrosting liquid tank conveys defrosting liquid to the second liquid tank.
Has the advantages that:
the invention provides an oil gas recovery device, wherein a defrosting agent in a defrosting liquid tank is connected with a second liquid tank through a balance pipe, when the defrosting agent in the defrosting liquid tank exceeds a connecting port of the balance pipe and the defrosting liquid tank, the liquid level in the defrosting liquid tank is too high, and the defrosting agent higher than the connecting port can enter the second liquid tank along the balance pipe, so that secondary refrigerant is redistributed, the liquid quantity between the second liquid tank and the defrosting liquid tank is relatively stable, and the stability, reliability and safety of the oil gas recovery device during working are improved.
Drawings
FIG. 1 is a schematic structural diagram of an oil and gas recovery device provided by the present invention;
FIG. 2 is a schematic structural diagram of a second refrigeration mechanism, a third refrigeration mechanism and a defrosting mechanism provided by the invention;
FIG. 3 is a schematic view of the connection structure of the first hydrocarbon condenser, the second hydrocarbon condenser, the third hydrocarbon condenser, the tail gas heater and the oil storage tank provided by the invention;
FIG. 4 is a schematic structural diagram of a first refrigeration mechanism provided by the present invention;
FIG. 5 is a schematic view of the connection structure of a first oil gas condenser, a second oil gas condenser, a third oil gas condenser, a fourth oil gas condenser, a fifth oil gas condenser, a tail gas heater and an oil storage tank provided by the invention;
fig. 6 is a logic block diagram of the control method provided by the present invention.
Description of the main element symbols: 11-a first oil-gas condenser, 12-a second oil-gas condenser, 13-a third oil-gas condenser, 14-a tail gas heater, 15-an oil storage tank, 2-a first refrigeration mechanism, 21-a first evaporator, 22-a first compressor, 23-a first condenser, 24-a first expansion valve, 25-a first liquid storage tank, 26-a first refrigerant carrying pump, 3-a second refrigeration mechanism, 31-a second evaporator, 32-a second compressor, 33-a second condenser, 34-a second expansion valve, 35-a second liquid storage tank, 36-a second refrigerant carrying pump, 41-a first switch valve, 42-a second switch valve, 43-a third switch valve, 44-a fourth switch valve, 5-a third refrigeration mechanism, 51-a third evaporator, 52-a third compressor, 53-a third condenser, 54-a third expansion valve, 55-a third liquid storage tank, 56-a third refrigeration pump, 61-a fifth switch valve, 62-a sixth switch valve, 63-a seventh switch valve, 64-an eighth switch valve, 62-a seventeenth switch valve, 7-a defrosting mechanism, 71-a defrosting heat exchanger and 72-a defrosting liquid storage tank, 73-a defrosting agent pump, 74-a balance pipe, 81-a fourth oil-gas condenser, 82-a ninth switch valve, 83-a tenth switch valve, 84-an eleventh switch valve, 85-a twelfth switch valve, 91-a fifth oil-gas condenser, 92-a thirteenth switch valve, 93-a fourteenth switch valve, 94-a fifteenth switch valve, 95-a sixteenth switch valve and 96-an eighteenth switch valve.
Detailed Description
The invention provides an oil gas recovery device and a control method, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and embodiments.
In the description of the present invention, it is to be understood that the terms "mounted," "connected," and the like are to be interpreted broadly, and those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
In the oil gas recovery processing process, the second oil gas condenser 12 further cools the oil gas output by the first oil gas condenser 11, and the temperature of the oil gas output by the second oil gas condenser 12 is low, which means that the second oil gas condenser 12 is easy to frost in the oil gas recovery processing process, so that the second oil gas condenser 12 needs to be defrosted to improve the stability and safety of the oil gas recovery device during operation; therefore, for the oil gas recovery device disclosed in the present application, the second oil gas condenser 12 can execute two modes, namely, a cooling mode and a defrosting mode, when the oil gas recovery device is switched from the cooling mode to the defrosting mode, the low-temperature secondary refrigerant remaining in the heat exchange tubes of the second oil gas condenser 12 enters the defrosting liquid tank 72 of the defrosting mechanism 7, and when the oil gas recovery device is switched from the defrosting mode to the cooling mode, the normal-temperature secondary refrigerant remaining in the heat exchange tubes of the second oil gas condenser 12 enters the second liquid tank 35 of the second cooling mechanism 3, since the density of the normal-temperature secondary refrigerant is less than that of the low-temperature secondary refrigerant, and when the cooling mode and the defrosting mode are switched, the volume of the liquid remaining in the heat exchange tubes of the second oil gas condenser 12 is the same, as a result, the low-temperature secondary refrigerant in the second liquid tank 35 migrates to the defrosting liquid tank 72, and the mass of the secondary refrigerant in the defrosting liquid tank, that is, the liquid level in the defrosting liquid tank 72 becomes higher and higher, and there is a problem of unbalance of the liquid amount between the second liquid tank 35 and the defrosting liquid tank 72.
Referring to fig. 1 to 4, the present invention provides an oil gas recovery device, which includes a control device, a first oil gas condenser 11, a second oil gas condenser 12, a second liquid storage tank 35, and a first refrigeration mechanism 2, a second refrigeration mechanism 3, a defrosting mechanism 7 and a tail gas heater 14, which are electrically connected to the control device, respectively; the first oil-gas condenser 11, the second oil-gas condenser 12 and the tail gas heater 14 are sequentially arranged along the inlet and outlet direction of oil gas; the first refrigerating mechanism 2 is used for cooling the secondary refrigerant returned by the first oil-gas condenser 11, the second refrigerating mechanism 3 is used for cooling the secondary refrigerant returned by the second oil-gas condenser 12, and a secondary refrigerant outlet of the second refrigerating mechanism 3 is connected with the second oil-gas condenser 12 through the second liquid storage tank 35; the defrosting mechanism 7 is connected with an external heat source supply mechanism, the defrosting mechanism 7 provides defrosting agent for the second oil gas condenser 12 and the tail gas heater 14, the defrosting mechanism 7 comprises a defrosting liquid tank 72, and the defrosting liquid tank 72 is connected with the upper part of the second liquid tank 35 through a balance pipe 74; in one embodiment, the control device is a control circuit board comprising any one control chip in an STM32 series control chip; the external heat source supply mechanism can be a device used for providing a heat source in the prior art, and the heat source can be a high-temperature refrigerant or high-temperature air and the like.
According to the oil gas recovery device disclosed by the application, the defrosting agent in the defrosting agent tank 72 is over high when the defrosting agent in the defrosting agent tank 72 exceeds the connecting port between the balancing pipe 74 and the defrosting agent tank 72, and the defrosting agent higher than the connecting port can enter the second liquid tank 35 along the balancing pipe 74, so that the secondary refrigerant is redistributed, the liquid amount between the second liquid tank 35 and the defrosting agent tank 72 is relatively stable, and the stability, reliability and safety of the oil gas recovery device during working are improved; in addition, the first oil-gas condenser 11 and the second oil-gas condenser 12 are adopted to cool the oil gas step by step, so that the work load of each oil-gas condenser and each refrigerating mechanism can be reduced, and the work effect of the oil-gas recovery device is improved.
The working modes of the oil gas recovery device comprise a refrigeration mode and a defrosting mode, when the oil gas recovery device executes the refrigeration mode, the first refrigeration mechanism 2 conveys the secondary refrigerant to the first oil gas condenser 11, and the secondary refrigerant in the first oil gas condenser 11 exchanges heat with oil gas input from the outside and returns to the first refrigeration mechanism 2 to cool down to form circulation; the second refrigerating mechanism 3 conveys the secondary refrigerant to the second oil-gas condenser 12 through the second liquid storage tank 35, the secondary refrigerant in the second oil-gas condenser 12 exchanges heat with the oil gas output from the first oil-gas condenser 11, returns to the second refrigerating mechanism 3 for cooling, and then enters the second liquid storage tank 35 to form circulation; the second oil gas condenser 12 outputs the oil gas subjected to the secondary cooling to the tail gas heater 14, and the tail gas heater 14 performs heating treatment on the oil gas and outputs the oil gas to an external oil gas treatment unit; when the oil gas recovery device executes a defrosting mode, the first refrigerating mechanism 2 and the second refrigerating mechanism 3 stop working, the defrosting mechanism 7 conveys defrosting agent to the second oil gas condenser 12, the defrosting agent radiates heat in the second oil gas condenser 12 to solve the problem of frosting of the second oil gas condenser 12, and the cooled defrosting agent returns to the defrosting mechanism 7 to be heated to form a cycle; the defrosting agent output by the defrosting mechanism 7 and the secondary refrigerant output by the refrigerating mechanism are the same medium, and the temperature of the defrosting agent is higher than that of the secondary refrigerant.
Further, referring to fig. 3 and 4, the first refrigeration mechanism 2 includes a first liquid storage tank 25, the first liquid storage tank 25 is used for storing the coolant cooled by the first refrigeration mechanism 2, and the first liquid storage tank 25 is connected to the input port of the first oil-gas condenser 11.
The secondary refrigerant delivery outlet of the first refrigerating mechanism 2 is connected with the first oil-gas condenser 11 through the first liquid storage tank 25, the secondary refrigerant delivery outlet of the second refrigerating mechanism 3 is connected with the second oil-gas condenser 12 through the second liquid storage tank 35, the secondary refrigerant after cooling stores cold in the first liquid storage tank 25 and the second liquid storage tank 35, the influence of external temperature change on an oil-gas treatment process can be reduced, the oil-gas recovery device can effectively deal with the problem of large oil-gas load change, and the stability and the safety of the oil-gas recovery device during working are improved.
In one embodiment, referring to fig. 3 and 4, the first refrigeration mechanism 2 includes a first evaporator 21, a first expansion valve 24, a first condenser 23 and a first compressor 22, a refrigerant output port of the first evaporator 21 is connected to an input port of the first compressor 22, and a coolant output port of the first evaporator 21 is connected to an input port of a first liquid storage tank 25; a refrigerant input port of the first evaporator 21 is connected with an output port of the first expansion valve 24, and a secondary refrigerant input port of the first evaporator 21 is connected with the first oil-gas condenser 11; an output port of the first compressor 22 is connected with an input port of a first condenser 23, and an output port of the first condenser 23 is connected with an input port of a first expansion valve 24; the first evaporator 21 absorbs heat to cool the secondary refrigerant output by the first oil-gas condenser 11, and outputs the cooled secondary refrigerant to the first liquid storage tank 25; the refrigerant absorbing heat in the first evaporator 21 enters the first condenser 23 to be cooled by the first compressor 22, and is then input into the first evaporator 21 through the first expansion valve 24, thereby ensuring stable operation of the first refrigeration mechanism 2.
Further, referring to fig. 2 and fig. 3, the second refrigeration mechanism 3 includes a second evaporator 31, a second expansion valve 34, a second condenser 33 and a second compressor 32, a refrigerant output port of the second evaporator 31 is connected to an input port of the second compressor 32, and a coolant output port of the second evaporator 31 is connected to an input port of the second liquid storage tank 35; a refrigerant input port of the second evaporator 31 is connected with an output port of the second expansion valve 34, and a secondary refrigerant input port of the second evaporator 31 is connected with the second oil-gas condenser 12; an output port of the second compressor 32 is connected with an input port of a second condenser 33, and an output port of the second condenser 33 is connected with an input port of a second expansion valve 34; the second evaporator 31 absorbs heat to cool the secondary refrigerant output by the second oil-gas condenser 12, and outputs the cooled secondary refrigerant to the second liquid storage tank 35; the refrigerant absorbing heat in the second evaporator 31 enters the second condenser 33 to be cooled by the second compressor 32, and is then input into the second evaporator 31 through the second expansion valve 34, thereby ensuring stable operation of the second refrigeration mechanism 3.
Further, referring to fig. 2 and 3, the oil gas recovery device further includes a first switch valve 41, a second switch valve 42, a third switch valve 43, and a fourth switch valve 44 electrically connected to the control device, respectively, a third port of the second oil gas condenser 12 is connected to the coolant input port of the second refrigeration mechanism 3 through the first switch valve 41, and a fourth port of the second oil gas condenser 12 is connected to the output port of the second liquid storage tank 35 through the second switch valve 42; the first switch valve 41 and the second switch valve 42 are respectively electrically connected with the control device; the third interface of the second oil-gas condenser 12 is connected with the defrosting agent input port of the defrosting mechanism 7 through the third switch valve 43, and the fourth interface of the second oil-gas condenser 12 is connected with the defrosting agent output port of the defrosting agent tank 72 through the fourth switch valve 44.
When the oil gas recovery device executes a refrigeration mode, the control device controls the first switch valve 41 and the second switch valve 42 to be opened, controls the third switch valve 43 and the fourth switch valve 44 to be closed, and the second refrigeration mechanism 3 transmits secondary refrigerant to the second oil gas condenser 12 so as to further cool the oil gas output by the first oil gas condenser 11; when the oil gas recovery device executes a defrosting mode, the control device controls the first switch valve 41 and the second switch valve 42 to be closed, controls the third switch valve 43 and the fourth switch valve 44 to be opened, and the defrosting mechanism 7 outputs the secondary refrigerant to the second oil gas condenser 12 to perform defrosting treatment on the second oil gas condenser 12.
Further, referring to fig. 1 to 3, the oil gas recovery device further includes a third refrigeration mechanism 5, a third oil gas condenser 13 and a third liquid storage tank 55, wherein the first oil gas condenser 11, the second oil gas condenser 12, the third oil gas condenser 13 and the tail gas heater 14 are sequentially arranged along an oil gas inlet and outlet direction; the third refrigerating mechanism 5 is used for generating secondary refrigerant, the third liquid storage tank 55 is used for storing the secondary refrigerant cooled by the third refrigerating mechanism 5 and returning the cooled secondary refrigerant to the third oil-gas condenser 13, and the defrosting mechanism 7 is used for conveying defrosting agent to the third oil-gas condenser 13; the defrosting liquid tank 72 is connected with the upper part of the third liquid tank 55 through the balance pipe 74; in the embodiment, the externally input oil gas is sequentially subjected to primary cooling by the first oil gas condenser 11, secondary cooling by the second oil gas condenser 12, tertiary cooling by the third oil gas condenser 13 and heating by the tail gas heater 14 and then output; the third oil gas condenser 13 is arranged, so that the oil gas output by the second oil gas condenser 12 can be further cooled, the work load of each oil gas condenser and each refrigerating mechanism is further reduced, and the work effect of the oil gas recovery device is improved.
Because the third oil gas condenser 13 further cools the oil gas output by the second oil gas condenser 12, the temperature of the oil gas output by the third oil gas condenser 13 is low, which means that the third oil gas condenser 13 is easy to frost in the oil gas treatment process, so it is necessary to perform defrosting treatment on the third oil gas condenser 13 to improve the stability and safety of the oil gas recovery device during operation; in addition, since the third hydrocarbon condenser 13 can perform the defrosting mode and the cooling mode, as the number of mode switching times increases, the amount of the coolant in the third reservoir 55 becomes smaller and smaller, and the amount of the coolant in the defrosting reservoir 72 becomes larger and larger; the defrosting liquid tank 72 and the third liquid tank 55 are communicated through the balance pipe 74, so that the secondary refrigerant can be redistributed, the liquid quantity balance between the defrosting liquid tank 72 and the third liquid tank 55 is ensured, and the stability and the reliability of the oil gas recovery device during working are improved.
When the oil gas recovery device executes a refrigeration mode, the third refrigeration mechanism 5 conveys the secondary refrigerant to the third oil gas condenser 13 through the third liquid storage tank 55, the secondary refrigerant in the third oil gas condenser 13 exchanges heat with oil gas output from the second oil gas condenser 12, returns to the third refrigeration mechanism 5 for cooling, and then enters the third liquid storage tank 55 to form a cycle; when the oil gas recovery device executes a defrosting mode, the third refrigerating mechanism 5 stops working, the defrosting mechanism 7 conveys the defrosting agent to the third oil gas condenser 13, the defrosting agent gives off heat in the third oil gas condenser 13 so as to solve the frosting problem of the third oil gas condenser 13, and the cooled defrosting agent returns to the defrosting mechanism 7 to be heated to form a cycle.
Further, referring to fig. 2 and 3, the oil gas recovery device further includes a fifth switch valve 61, a sixth switch valve 62, a seventh switch valve 63, and an eighth switch valve 64 electrically connected to the control device, respectively, a third port of the third oil gas condenser 13 is connected to an input port of the third refrigeration mechanism 5 through the fifth switch valve 61, and a fourth port of the third oil gas condenser 13 is connected to an output port of the third liquid storage tank 55 through the sixth switch valve 62; and a third interface of the third oil-gas condenser 13 is connected with an input port of the defrosting mechanism 7 through the seventh switch valve 63, and a fourth interface of the third oil-gas condenser 13 is connected with an output port of the defrosting mechanism 7 through the eighth switch valve 64.
When the oil gas recovery device executes a refrigeration mode, the control device controls the fifth switch valve 61 and the sixth switch valve 62 to be opened, controls the seventh switch valve 63 and the eighth switch valve 64 to be closed, and the third refrigeration mechanism 5 transmits secondary refrigerant to the third oil gas condenser 13 so as to further cool the oil gas output by the second oil gas condenser 12; when the oil gas recovery device executes a defrosting mode, the control device controls the fifth switch valve 61 and the sixth switch valve 62 to be closed, controls the seventh switch valve 63 and the eighth switch valve 64 to be opened, and the defrosting mechanism 7 conveys defrosting oil to the third oil gas condenser 13 so as to carry out defrosting treatment on the third oil gas condenser 13.
Referring to fig. 2 and 3, in an embodiment, the third refrigeration mechanism 5 includes a third evaporator 51, a third expansion valve 54, a third condenser 53 and a third compressor 52, a refrigerant output port of the third evaporator 51 is connected to an input port of the third compressor 52, and a coolant output port of the third evaporator 51 is connected to an input port of a third liquid storage tank 55; a refrigerant input port of the third evaporator 51 is connected with an output port of a third expansion valve 54, and a secondary refrigerant output port of the third evaporator 51 is connected with a third oil-gas condenser 13; an output port of the third compressor 52 is connected with an input port of a third condenser 53, and an output port of the third condenser 53 is connected with an input port of a third expansion valve 54; the secondary refrigerant returned by the third oil-gas condenser 13 exchanges heat with the refrigerant in the third evaporator 51, the refrigerant after heat exchange enters the third condenser 53 to be cooled under the action of the third compressor 52, and then is input into the third evaporator 51 through the third expansion valve 54, so that the third refrigeration mechanism 5 is ensured to work stably.
Further, referring to fig. 2 and 3, the defrosting mechanism 7 further includes a defrosting heat exchanger 71 and a defrosting agent pump 73, a third interface of the second oil-gas condenser 12 is connected to a defrosting agent input port of the defrosting heat exchanger 71 through the third on-off valve 43, a defrosting agent output port of the defrosting heat exchanger 71 is connected to an input port of a defrosting liquid tank 72, and an output port of the defrosting liquid tank 72 is respectively connected to a fourth interface of the second oil-gas condenser 12 and a fourth interface of the third oil-gas condenser 13 through the defrosting pump 73; the defrosting heat exchanger 71 is connected to an external heat source supply mechanism.
Further, please refer to fig. 3, the oil-gas recovery device further includes an oil storage tank 15, an input port of the oil storage tank 15 is respectively connected to the fifth interface of the first oil-gas condenser 11, the fifth interface of the second oil-gas condenser 12, the fifth interface of the third oil-gas condenser 13, and the fifth interface of the tail gas heater 14, and liquids condensed by the first oil-gas condenser 11, the second oil-gas condenser 12, the third oil-gas condenser 13, and the tail gas heater 14 enter the oil storage tank 15 under the action of their own gravity to realize the recovery of condensed liquids; the outlet of the oil storage tank 15 is connected to an externally designated location, which may be designated by the owner using the oil and gas recovery device.
Further, referring to fig. 5, the oil gas recovery device further includes a fourth oil gas condenser 81, a fifth oil gas condenser 91, and a ninth switch valve 82, a tenth switch valve 83, an eleventh switch valve 84, a twelfth switch valve 85, a thirteenth switch valve 92, a fourteenth switch valve 93, a fifteenth switch valve 94, a sixteenth switch valve 95, a seventeenth switch valve 62, and an eighteenth switch valve 96, which are electrically connected to the control device, respectively; the fourth oil-gas condenser 81 is used for further cooling the oil gas output by the first oil-gas condenser 11, and the fifth oil-gas condenser 91 is used for further cooling the oil gas output by the fourth oil-gas condenser 81; the third oil gas condenser 13 is connected with the tail gas heater 14 through the seventeenth switch valve 62, and the fifth oil gas condenser 91 is connected with the tail gas heater 14 through the eighteenth switch valve 96; a third interface of the fourth oil-gas condenser 81 is connected with the coolant input port of the second refrigeration mechanism 3 through the ninth switch valve 82, and a third interface of the fourth oil-gas condenser 81 is connected with the defrosting agent input port of the defrosting mechanism 7 through the eleventh switch valve 84; a fourth interface of the fourth oil-gas condenser 81 is connected with the output port of the second liquid storage tank 35 through the tenth switch valve 83, and a fourth interface of the fourth oil-gas condenser 81 is connected with the defrosting agent output port of the defrosting mechanism 7 through the twelfth switch valve 85; a third interface of the fifth oil-gas condenser 91 is connected with the coolant input port of the third refrigeration mechanism 5 through the thirteenth switching valve 92, and a third interface of the fifth oil-gas condenser 91 is connected with the defrosting agent input port of the defrosting mechanism 7 through the fifteenth switching valve 94; a fourth interface of the fifth oil-gas condenser 91 is connected with an output port of the third liquid storage tank 55 through the fourteenth switching valve 93, and a fourth interface of the fifth oil-gas condenser 91 is connected with a defrosting agent output port of the defrosting mechanism 7 through the sixteenth switching valve 95; the second refrigerating mechanism 3 is used for cooling the secondary refrigerant returned by the fourth oil-gas condenser 81, the third refrigerating mechanism 5 is used for cooling the secondary refrigerant returned by the fifth oil-gas condenser 91, and the defrosting mechanism 7 is used for heating the defrosting agent returned by the fourth oil-gas condenser 81 and the fifth oil-gas condenser 91.
Referring to fig. 6, in an embodiment, the oil gas recovery device includes a channel a and a channel B, where the channel a and the channel B may alternately perform a cooling mode and a defrosting mode to prolong the operation time of the cold-loaded oil gas recovery device, and may timely defrost an oil gas condenser with a frosting problem to ensure stable operation of the cold-loaded oil gas recovery device; the channel A comprises a first oil-gas condenser 11, a second oil-gas condenser 12, a third oil-gas condenser 13 and a tail gas heater 14 which are used for sequentially processing oil gas, and the channel B comprises a first oil-gas condenser 11, a fourth oil-gas condenser 81, a fifth oil-gas condenser 91 and a tail gas heater 14 which are used for sequentially processing oil gas; when the passage a performs the cooling mode and the passage B performs the defrosting mode, the control device controls the first, second, fifth, sixth, eleventh, twelfth, fifteenth, sixteenth, and seventeenth switching valves 41, 42, 61, 62 to be turned on and the remaining switching valves to be turned off; the second refrigerating mechanism 3 returns the cooled secondary refrigerant to the second oil-gas condenser 12 to cool oil gas, the third refrigerating mechanism 5 returns the cooled secondary refrigerant to the third oil-gas condenser 13 to cool oil gas, and the defrosting mechanism 7 provides defrosting agent to the fourth oil-gas condenser 81 and the fifth oil-gas condenser 91 to defrost the fourth oil-gas condenser 81 and the fifth oil-gas condenser 91; when the switching condition is reached, the switching condition may be switching time set in the control device, the channel a executes a defrosting mode, the channel B executes a cooling mode, the control device controls the third switch valve 43, the fourth switch valve 44, the seventh switch valve 63, the eighth switch valve 64, the ninth switch valve 82, the tenth switch valve 83, the thirteenth switch valve 92 and the fourteenth switch valve 93 to be opened, and controls the other switch valves to be closed, the second cooling mechanism 3 returns cooled coolant to the fourth oil gas condenser 81 to cool oil gas, the third cooling mechanism 5 returns cooled coolant to the fifth oil gas condenser 91 to cool oil gas, and the defrosting mechanism 7 provides defrosting agent to the second oil gas condenser 12 and the third oil gas condenser 13 to defrost the second oil gas condenser 12 and the third oil gas condenser 13.
In one embodiment, the first switch valve 41, the second switch valve 42, the third switch valve 43, the fourth switch valve 44, the fifth switch valve 61, the sixth switch valve 62, the seventh switch valve 63, the eighth switch valve 64, the ninth switch valve 82, the tenth switch valve 83, the eleventh switch valve 84, the twelfth switch valve 85, the thirteenth switch valve 92, the fourteenth switch valve 93, the fifteenth switch valve 94, the sixteenth switch valve 95, the seventeenth switch valve 62, and the eighteenth switch valve 96 are solenoid valves.
Further, a liquid level sensor is arranged in the defrosting liquid tank 72, a delivery pump is arranged on the balance pipe 74, and the liquid level sensor and the delivery pump are respectively and electrically connected with the control device; the detection position of the liquid level sensor is higher than a connecting port of the balance pipe 74 and the defrosting liquid tank 72, when the liquid level sensor feeds back a detection signal to the control device, the liquid level of defrosting liquid in the defrosting liquid tank 72 is indicated to be too high, the control device controls the delivery pump to start to work, and the speed of delivering the defrosting liquid to the second liquid storage tank 35 by the defrosting liquid tank 72 is increased; the liquid level sensor plays a role in safety monitoring, the liquid level of defrosting agent in the defrosting agent tank 72 is prevented from being too high, and the stable work of the oil gas recovery device is ensured.
Referring to fig. 6, the present invention further provides a control method of an oil gas recovery device, which is used for implementing the operation control of the oil gas recovery device as described above:
and S100, when the liquid level sensor feeds back a detection signal to the control device, the control device controls the conveying pump to start working.
S200, the defrosting agent is conveyed to the second liquid storage tank 35 by the defrosting agent liquid tank 72.
In other embodiments, the vapor recovery device comprises a third refrigeration mechanism 5, a third vapor condenser 13, and a third reservoir 55 connecting the third refrigeration mechanism 5 and the third vapor condenser 13, and when the transfer pump starts to operate, the defrosting liquid reservoir 72 simultaneously delivers the defrosting liquid to the second reservoir 35 and the third reservoir 55.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (10)
1. An oil gas recovery device comprises a control device, and is characterized by further comprising a first oil gas condenser, a second liquid storage tank, a first refrigerating mechanism, a second refrigerating mechanism, a defrosting mechanism and a tail gas heater, wherein the first refrigerating mechanism, the second refrigerating mechanism, the defrosting mechanism and the tail gas heater are respectively and electrically connected with the control device; the first oil gas condenser, the second oil gas condenser and the tail gas heater are sequentially arranged along the oil gas inlet and outlet direction; the first refrigerating mechanism is used for cooling the secondary refrigerant returned by the first oil-gas condenser, the second refrigerating mechanism is used for cooling the secondary refrigerant returned by the second oil-gas condenser, and a secondary refrigerant output port of the second refrigerating mechanism is connected with the second oil-gas condenser through the second liquid storage tank; the defrosting mechanism is connected with the external heat source supply mechanism, the defrosting mechanism provides defrosting agent for the second oil-gas condenser and the tail gas heater, and the defrosting mechanism comprises a defrosting liquid tank which is connected with the upper part of the second liquid tank through a balance pipe.
2. The oil and gas recovery device according to claim 1, wherein the first refrigerating mechanism comprises a first liquid storage tank, the first liquid storage tank is used for storing the secondary refrigerant cooled by the first refrigerating mechanism, and the first liquid storage tank is connected with the input port of the first oil and gas condenser.
3. The oil and gas recovery device according to claim 1, further comprising a first switch valve, a second switch valve, a third switch valve and a fourth switch valve electrically connected to the control device, respectively, wherein a third port of the second oil and gas condenser is connected to the coolant input port of the second refrigeration mechanism through the first switch valve, and a fourth port of the second oil and gas condenser is connected to the output port of the second liquid storage tank through the second switch valve; the first switch valve and the second switch valve are respectively electrically connected with the control device; and a third interface of the second oil-gas condenser is connected with a defrosting agent input port of the defrosting mechanism through the third switch valve, and a fourth interface of the second oil-gas condenser is connected with a defrosting agent output port of the defrosting liquid tank through the fourth switch valve.
4. The oil gas recovery device according to claim 1, further comprising a third refrigeration mechanism, a third oil gas condenser and a third liquid storage tank, wherein the first oil gas condenser, the second oil gas condenser, the third oil gas condenser and the tail gas heater are sequentially arranged along an oil gas inlet and outlet direction; the third refrigerating mechanism is used for cooling the secondary refrigerant returned by the third oil-gas condenser, and conveying the cooled secondary refrigerant to a third liquid storage tank, and the third liquid storage tank returns the secondary refrigerant to the third oil-gas condenser; the defrosting mechanism is used for conveying defrosting agent to the third oil-gas condenser; the defrosting liquid tank is connected with the upper part of the third liquid tank through the balance pipe.
5. The oil and gas recovery device according to claim 4, further comprising a fifth switch valve, a sixth switch valve, a seventh switch valve and an eighth switch valve electrically connected to the control device, respectively, wherein the third port of the third oil and gas condenser is connected to the input port of the third refrigeration mechanism through the fifth switch valve, and the fourth port of the third oil and gas condenser is connected to the output port of the third liquid storage tank through the sixth switch valve; and a third interface of the third oil-gas condenser is connected with an input port of the defrosting mechanism through the seventh switch valve, and a fourth interface of the third oil-gas condenser is connected with an output port of the defrosting mechanism through the eighth switch valve.
6. The oil and gas recovery device according to claim 5, further comprising a fourth oil and gas condenser, a fifth oil and gas condenser, and a ninth switch valve, a tenth switch valve, an eleventh switch valve, a twelfth switch valve, a thirteenth switch valve, a fourteenth switch valve, a fifteenth switch valve, a sixteenth switch valve, a seventeenth switch valve and an eighteenth switch valve which are electrically connected with the control device, respectively; the fourth oil gas condenser is used for further cooling the oil gas output by the first oil gas condenser, and the fifth oil gas condenser is used for further cooling the oil gas output by the fourth oil gas condenser; the third oil-gas condenser is connected with the tail gas heater through the seventeenth switch valve, and the fifth oil-gas condenser is connected with the tail gas heater through the eighteenth switch valve; a third interface of the fourth oil-gas condenser is connected with a secondary refrigerant input port of the second refrigerating mechanism through the ninth switch valve, and a third interface of the fourth oil-gas condenser is connected with a defrosting agent input port of the defrosting mechanism through the eleventh switch valve; a fourth interface of the fourth oil-gas condenser is connected with an output port of the second liquid storage tank through the tenth switch valve, and the fourth interface of the fourth oil-gas condenser is connected with a defrosting agent output port of the defrosting mechanism through the twelfth switch valve; a third interface of the fifth oil-gas condenser is connected with a secondary refrigerant input port of the third refrigerating mechanism through the thirteenth switching valve, and a third interface of the fifth oil-gas condenser is connected with a defrosting agent input port of the defrosting mechanism through the fifteenth switching valve; a fourth interface of the fifth oil-gas condenser is connected with an output port of the third liquid storage tank through the fourteenth switching valve, and a fourth interface of the fifth oil-gas condenser is connected with a defrosting agent output port of the defrosting mechanism through the sixteenth switching valve; the second refrigerating mechanism is used for cooling the secondary refrigerant returned by the fourth oil-gas condenser, the third refrigerating mechanism is used for cooling the secondary refrigerant returned by the fifth oil-gas condenser, and the defrosting mechanism is used for heating the defrosting agent returned by the fourth oil-gas condenser and the fifth oil-gas condenser.
7. The oil and gas recovery device according to claim 4, wherein the defrosting mechanism further comprises a defrosting heat exchanger and a defrosting agent pump, the third interface of the second oil and gas condenser is connected with the defrosting agent input port of the defrosting heat exchanger through the third on-off valve, the defrosting agent output port of the defrosting heat exchanger is connected with the input port of the defrosting liquid tank, and the output port of the defrosting liquid tank is respectively connected with the fourth interface of the second oil and gas condenser and the fourth interface of the third oil and gas condenser through the defrosting agent pump; the defrosting heat exchanger is connected with an external heat source supply mechanism.
8. The oil and gas recovery device according to claim 1, further comprising an oil storage tank, wherein an input port of the oil storage tank is connected to the fifth port of the first oil and gas condenser, the fifth port of the second oil and gas condenser and the fifth port of the tail gas heater, respectively.
9. The oil and gas recovery device according to claim 1, wherein a liquid level sensor is arranged in the defrosting liquid tank, a delivery pump is arranged on the balance pipe, and the liquid level sensor and the delivery pump are respectively electrically connected with the control device.
10. A control method of an oil and gas recovery device, characterized by being used for realizing the operation control of the oil and gas recovery device according to claim 9:
when the liquid level sensor feeds back a detection signal to the control device, the control device controls the conveying pump to start working, and the defrosting liquid tank conveys defrosting liquid to the second liquid tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110074919.5A CN112891980A (en) | 2021-01-20 | 2021-01-20 | Oil gas recovery device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110074919.5A CN112891980A (en) | 2021-01-20 | 2021-01-20 | Oil gas recovery device and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112891980A true CN112891980A (en) | 2021-06-04 |
Family
ID=76116611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110074919.5A Pending CN112891980A (en) | 2021-01-20 | 2021-01-20 | Oil gas recovery device and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112891980A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457358A (en) * | 2021-07-06 | 2021-10-01 | 深圳市奥图威尔科技有限公司 | Full-automatic recovery unit of organic volatile matter |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5187940A (en) * | 1991-02-19 | 1993-02-23 | Standard Motor Products, Inc. | Refrigerant recovery and purification system |
| US20120238793A1 (en) * | 2011-03-16 | 2012-09-20 | Cullinane John T | In-Line Device for Gas-Liquid Contacting, and Gas Processing Facility Employing Co-Current Contactors |
| CN105737470A (en) * | 2016-03-10 | 2016-07-06 | 济南欧菲特制冷设备有限公司 | Defrosting device for refrigeration system |
| CN108731292A (en) * | 2018-07-09 | 2018-11-02 | 广东申菱环境***股份有限公司 | A kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit |
| CN109157861A (en) * | 2018-09-29 | 2019-01-08 | 南京五洲制冷集团有限公司 | With the indirect condensing formula petroleum vapor recovery unit from the function that defrosts |
| CN208458298U (en) * | 2018-07-09 | 2019-02-01 | 广东申菱环境***股份有限公司 | A kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit |
| CN109708284A (en) * | 2019-02-22 | 2019-05-03 | 广东欧科空调制冷有限公司 | Gas-liquid separator liquid level controlling method, device and air conditioner after a kind of defrosting |
| CN109855336A (en) * | 2019-02-01 | 2019-06-07 | 青岛海信日立空调***有限公司 | A kind of control method of refrigeration system |
| CN209392767U (en) * | 2018-09-29 | 2019-09-17 | 南京五洲制冷集团有限公司 | With the indirect condensing formula petroleum vapor recovery unit from the function that defrosts |
-
2021
- 2021-01-20 CN CN202110074919.5A patent/CN112891980A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5187940A (en) * | 1991-02-19 | 1993-02-23 | Standard Motor Products, Inc. | Refrigerant recovery and purification system |
| US20120238793A1 (en) * | 2011-03-16 | 2012-09-20 | Cullinane John T | In-Line Device for Gas-Liquid Contacting, and Gas Processing Facility Employing Co-Current Contactors |
| CN105737470A (en) * | 2016-03-10 | 2016-07-06 | 济南欧菲特制冷设备有限公司 | Defrosting device for refrigeration system |
| CN108731292A (en) * | 2018-07-09 | 2018-11-02 | 广东申菱环境***股份有限公司 | A kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit |
| CN208458298U (en) * | 2018-07-09 | 2019-02-01 | 广东申菱环境***股份有限公司 | A kind of heat siphon type defrosting binary channels petroleum vapor recovery condensation unit |
| CN109157861A (en) * | 2018-09-29 | 2019-01-08 | 南京五洲制冷集团有限公司 | With the indirect condensing formula petroleum vapor recovery unit from the function that defrosts |
| CN209392767U (en) * | 2018-09-29 | 2019-09-17 | 南京五洲制冷集团有限公司 | With the indirect condensing formula petroleum vapor recovery unit from the function that defrosts |
| CN109855336A (en) * | 2019-02-01 | 2019-06-07 | 青岛海信日立空调***有限公司 | A kind of control method of refrigeration system |
| CN109708284A (en) * | 2019-02-22 | 2019-05-03 | 广东欧科空调制冷有限公司 | Gas-liquid separator liquid level controlling method, device and air conditioner after a kind of defrosting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457358A (en) * | 2021-07-06 | 2021-10-01 | 深圳市奥图威尔科技有限公司 | Full-automatic recovery unit of organic volatile matter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2808626B1 (en) | Air-conditioning unit | |
| CN100575801C (en) | Storage of calorifics energy and cooling system that heat exchange performance strengthens based on cold-producing medium | |
| CN106537064A (en) | Refrigeration system | |
| CN102102934B (en) | Refrigerator and operation control method thereof | |
| CN108131860B (en) | Ultralow temperature air source heat pump based on single-machine double-stage compressor | |
| CN106524610A (en) | Air conditioning system and air conditioner | |
| CN211823378U (en) | Refrigerator with a door | |
| CN100472152C (en) | Refrigeration equipment | |
| CN106461300A (en) | Chiller system | |
| CN111207534A (en) | Refrigeration system, refrigeration equipment and control method of refrigeration system | |
| CN1321298C (en) | Refrigerating machine | |
| CN112891980A (en) | Oil gas recovery device and control method | |
| CN107367125B (en) | Refrigerator and refrigerator control method | |
| CN109341120A (en) | A kind of full-liquid type refrigeration system | |
| CN106440452A (en) | Cold storage device and heat storage device | |
| CN104582921B (en) | For object being carried out equipment and the method for homoiothermic | |
| CN109163469B (en) | Air conditioning system and control method thereof | |
| CN110887301A (en) | Refrigerating equipment | |
| CN104315635B (en) | Medium- and small-sized high-temperature-difference double-working-condition dynamic ice-slurry cold storage air conditioner | |
| CN112870752A (en) | Cold-carrying type oil gas recovery device | |
| CN115597131A (en) | Outdoor unit and multifunctional water source multi-split system | |
| CN112815570B (en) | Gas heat pump multi-split air conditioning system and efficient defrosting control method thereof | |
| CN104676962B (en) | Cold and hot cogeneration heat pump equipment | |
| CN207662004U (en) | Air conditioner and refrigeration house system | |
| CN111397232A (en) | Multi-connected cold storage air cooler and system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210604 |