Oil gas condensing device and tertiary oil gas recovery equipment

Abstract

The utility model discloses an oil gas condensing device and tertiary oil gas recovery equipment, and the oil gas condensing device comprises a first oil gas condenser, a heat exchange medium condenser, a cooling fan and a first compressor. The first oil-gas condenser comprises a first oil-gas condensation cavity and a first oil-gas condensation pipe. The heat exchange medium condenser comprises a heat exchange medium condensation cavity and a heat exchange medium condensation pipe, an opening communicated with the heat exchange medium condensation cavity is formed in the heat exchange medium condenser, and the heat exchange medium condensation pipe is communicated with the first oil gas condensation cavity. The air outlet side of the cooling fan faces the opening. An input port of the first compressor communicates with an outlet of the first oil gas condensation cavity, and an output port of the first compressor communicates with an inlet of the heat exchange medium condensation cavity. According to the oil gas condensing device and the tertiary oil gas recovery equipment, oil gas discharged by the condenser of the existing tertiary oil gas recovery equipment can be subjected to secondary condensation, the oil gas recovery rate and recovery efficiency are improved, and air pollution caused by the oil gas is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and gas recovery, and particularly relates to an oil and gas condensation device and a tertiary oil and gas recovery device. Background Technique

[0002] The current oil and gas recovery at gas stations includes primary recovery, secondary recovery, and tertiary recovery. Among them, primary recovery is to collect the oil and gas volatilized during the unloading of the oil tanker into the oil tanker through the return air pipe on the oil tanker during the unloading process of the oil tanker. Secondary recovery is to pump the oil and gas volatilized from the car fuel tank into the gas station's storage tank through the vacuum pump installed inside the fuel dispenser during the refueling process of the car. Tertiary recovery is to directly condense the oil and gas in the gas station's storage tank into liquid oil through a tertiary oil and gas recovery device during the storage of gasoline at the gas station, achieving the purpose of recycling. Since a large amount of gasoline is stored in the gas station's storage tank, the oil and gas volatilized inside are relatively large, so tertiary oil and gas recovery is particularly important.

[0003] The current tertiary oil and gas recovery devices generally condense the oil and gas into liquid oil through a condenser, separate the liquid oil from the uncondensed oil and gas using a gas-liquid separator, and then re-input the liquid oil into the storage tank.

[0004] However, in the above process, the condenser cannot fully condense the oil and gas in hot weather and high oil and gas concentration conditions, resulting in a large amount of uncondensed oil and gas being re-transported back into the storage tank or discharged into the air, which not only affects the oil and gas recovery rate and recovery efficiency, but also easily pollutes the air environment.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide an oil and gas condensation device, which is used to solve the problem that the existing tertiary oil and gas recovery device cannot fully condense the oil and gas.

[0007] To achieve the above object, a specific embodiment of the present utility model provides an oil and gas condensation device, which is used to condense the oil and gas discharged from the condenser of the three - stage oil and gas recovery equipment. The oil and gas condensation device includes a first oil and gas condenser, a heat exchange medium condenser, a cooling fan and a first compressor. The first oil and gas condenser includes a first oil and gas condensation chamber and a first oil and gas condensation pipe disposed in the first oil and gas condensation chamber. The heat exchange medium condenser includes a heat exchange medium condensation chamber and a heat exchange medium condensation pipe disposed in the heat exchange medium condensation chamber. An opening communicating with the heat exchange medium condensation chamber is provided on the heat exchange medium condenser, and the outlet of the heat exchange medium condensation pipe is connected to the inlet of the first oil and gas condensation chamber. The air - outlet side of the cooling fan faces the opening. The inlet of the first compressor is connected to the outlet of the first oil and gas condensation chamber, and the outlet of the first compressor is connected to the inlet of the heat exchange medium condensation chamber.

[0008] In one or more embodiments of the present utility model, the cooling fan is installed on the outer wall of the heat exchange medium condenser.

[0009] In one or more embodiments of the present utility model, at least a part of the pipe connecting the inlet of the first oil and gas condensation chamber and the outlet of the heat exchange medium condensation pipe is sleeved with a first heat - insulating cotton.

[0010] In one or more embodiments of the present utility model, the first heat - insulating cotton extends to the outer wall of the first oil and gas condenser.

[0011] In one or more embodiments of the present utility model, at least a part of the pipe connecting the outlet of the first oil and gas condensation chamber and the inlet of the first compressor is sleeved with a second heat - insulating cotton.

[0012] In one or more embodiments of the present utility model, the second heat - insulating cotton extends to the outer wall of the first oil and gas condenser.

[0013] In one or more embodiments of the present utility model, the first oil and gas condensation pipe is a coiled pipe.

[0014] In one or more embodiments of the present utility model, the heat exchange medium condensation pipe is a coiled pipe.

[0015] On the other hand, the present utility model also provides a three - stage oil and gas recovery device, which is used to recover the oil and gas in the storage tank. The three - stage oil and gas recovery device includes a second compressor, a second oil and gas condenser, the above - mentioned oil and gas condensation device and a gas - liquid separator. The input port of the second compressor is connected to the storage tank. The second oil and gas condenser includes a second oil and gas condensation chamber and second oil and gas condensation pipes arranged in the second oil and gas condensation chamber. The inlet of the second oil and gas condensation pipes is connected to the output port of the second compressor. The inlet of the first oil and gas condensation pipe is connected to the outlet of the second oil and gas condensation pipe. The gas - liquid separator includes a liquid inlet, a liquid discharge port and a gas discharge port. The liquid inlet is connected to the outlet of the first oil and gas condensation pipe, and the liquid discharge port is connected to the storage tank.

[0016] In one or more embodiments of the present utility model, a drain valve is provided on the pipeline connecting the liquid discharge port and the storage tank.

[0017] In one or more embodiments of the present utility model, a pressure detector is provided on the pipeline connecting the input port of the second compressor and the storage tank.

[0018] Compared with the prior art, the first oil and gas condensation pipe of the present utility model can receive the oil and gas discharged from the condenser of the existing three - stage oil and gas recovery device. The oil and gas in the first oil and gas condensation pipe exchanges heat with the low - temperature heat - exchange medium in the first oil and gas condensation chamber for secondary condensation, improving the oil and gas recovery rate and recovery efficiency, and avoiding the pollution of the air by the oil and gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a three - dimensional view of the oil and gas condensation device in Embodiment 1 of the present utility model;

[0021] Figure 2 It is a top view of the oil and gas condensation device in Embodiment 1 of the present utility model;

[0022] Figure 3 It is a partial three - dimensional view of the oil and gas condensation device in Embodiment 1 of the present utility model;

[0023] Figure 4 It is an internal structure diagram of the first oil and gas condenser in Embodiment 1 of the present utility model;

[0024] Figure 5 It is a structural diagram of the three - stage oil and gas recovery device in Embodiment 2 of the present utility model.

[0025] Description of Main Reference Numerals: 1. Oil and Gas Condensing Device; 11. First Oil and Gas Condenser; 111. First Oil and Gas Condensing Chamber; 112. First Oil and Gas Condensing Pipe; 12. Heat Transfer Medium Condenser; 121. Heat Transfer Medium Condensing Chamber; 122. Heat Transfer Medium Condensing Pipe; 123. Opening; 13. Cooling Fan; 14. First Compressor; 15. First Insulating Cotton; 16. Second Insulating Cotton; 2. Oil Storage Tank; 3. Second Compressor; 4. Second Oil and Gas Condenser; 5. Gas-Liquid Separator; 501. Liquid Inlet; 502. Liquid Drain Outlet; 503. Exhaust Outlet; 6. Exhaust Pipeline; 7. Drain Valve; 8. Pressure Detector. Detailed Implementation Modes

[0026] In order to enable those skilled in the art of the present technology to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1:

[0028] Referring to Figures 1 to 4 as shown, the oil and gas condensing device 1 in this embodiment is used to condense the oil and gas discharged from the condenser of the existing three-stage oil and gas recovery equipment. The oil and gas condensing device 1 includes a first oil and gas condenser 11, a heat transfer medium condenser 12, a cooling fan 13, and a first compressor 14.

[0029] Specifically, the first oil and gas condenser 11 in this embodiment includes a first oil and gas condensing chamber 111 and a first oil and gas condensing pipe 112 disposed in the first oil and gas condensing chamber 111. The heat transfer medium condenser 12 includes a heat transfer medium condensing chamber 121 and a heat transfer medium condensing pipe 122 disposed in the heat transfer medium condensing chamber 121. The heat transfer medium condenser 12 is provided with an opening 123 communicating with the heat transfer medium condensing chamber 121. The outlet of the heat transfer medium condensing pipe 122 is connected to the inlet of the first oil and gas condensing chamber 111. The air outlet side of the cooling fan 13 faces the opening 123. The inlet of the first compressor 14 is connected to the outlet of the first oil and gas condensing chamber 111, and the outlet of the first compressor 14 is connected to the inlet of the heat transfer medium condensing chamber 121.

[0030] According to the above structural design, the first compressor 14 compresses the heat exchange medium and then transports it to the heat exchange medium condensation pipe 122. The radiator fan 13 transports the heat dissipation air flow to the heat exchange medium condensation chamber 121, where it undergoes heat exchange with the heat exchange medium in the heat exchange medium condensation pipe 122. The heat exchange medium transfers heat to the heat dissipation air flow to form a low-temperature heat exchange medium. The low-temperature heat exchange medium then flows into the first oil and gas condensation chamber 111. The oil and gas discharged from the existing three-stage oil and gas recovery equipment are transported to the first oil and gas condensation pipe 112. The oil and gas transfer heat to the low-temperature heat exchange medium in the first oil and gas condensation chamber 111 and condense to form liquid oil. The liquid oil flows into the corresponding storage container through the outlet of the first oil and gas condensation pipe 112, achieving the condensation recovery of the oil and gas.

[0031] The above heat exchange medium can be selected from air, water, coolant, or other conventional heat exchange media.

[0032] Refer to Figure 1 and Figure 3 As shown, in this embodiment, the radiator fan 13 is installed on the outer wall of the heat exchange medium condenser 12, and the air outlet side is disposed facing the opening 123.

[0033] The radiator fan 13 is directly connected to the heat exchange medium condenser 12, which can reduce the length of the flow path of the heat dissipation air flow between the radiator fan 13 and the heat exchange medium condensation chamber 121, reduce the air volume loss, and improve the heat exchange efficiency between the heat dissipation air flow and the heat exchange medium.

[0034] Refer to Figure 3 As shown, in this embodiment, at least a part of the pipe connecting the inlet of the first oil and gas condensation chamber 111 to the outlet of the heat exchange medium condensation pipe 122 is sleeved with a first heat insulation cotton 15. The low-temperature heat exchange medium is transported in the above pipe, and the first heat insulation cotton 15 can prevent the low-temperature heat exchange medium from generating heat exchange with the external air and prevent the low-temperature heat exchange medium from absorbing too much heat before entering the first oil and gas condensation chamber 111.

[0035] Preferably, the first heat insulation cotton 15 is disposed near the inlet of the first oil and gas condensation chamber 111, and one end of the first heat insulation cotton 15 extends to the outer wall of the first oil and gas condenser 11.

[0036] Similarly, refer to Figure 3 As shown, in this embodiment, at least a part of the pipe connecting the outlet of the first oil and gas condensation chamber 111 to the inlet of the first compressor 14 is sleeved with a second heat insulation cotton 16. The high-temperature or normal-temperature heat exchange medium is transported in the above pipe, and the second heat insulation cotton 16 can prevent the high-temperature or normal-temperature heat exchange medium from generating heat exchange with the external air and prevent the high-temperature or normal-temperature heat exchange medium from losing too much heat before entering the first compressor 14.

[0037] Preferably, the second heat-insulating cotton 16 is arranged near the outlet of the first oil-gas condensation chamber 111, and the second heat-insulating cotton 16 extends to the outer wall of the first oil-gas condenser 11.

[0038] The shapes and lengths of the first oil-gas condensation pipe 112 and the heat exchange medium condensation pipe 122 can be set according to the actual needs of users. Preferably, the first oil-gas condensation pipe 112 and the heat exchange medium condensation pipe 122 are selected as coiled pipes.

[0039] Embodiment 2:

[0040] Refer to Figure 5 As shown, this embodiment provides a three-stage oil-gas recovery device, which is used to recover the oil-gas in the storage tank 2. The three-stage oil-gas recovery device in this embodiment includes the oil-gas condensation device 1, the second compressor 3, the second oil-gas condenser 4 and the gas-liquid separator 5 in Embodiment 1.

[0041] Specifically, in this embodiment, the input port of the second compressor 3 is communicated with the storage tank 2. The second oil-gas condenser 4 includes a second oil-gas condensation chamber and a second oil-gas condensation pipe arranged in the second oil-gas condensation chamber. The inlet of the second oil-gas condensation pipe is communicated with the output port of the second compressor 3. The inlet of the first oil-gas condensation pipe 112 is communicated with the outlet of the second oil-gas condensation pipe. The gas-liquid separator 5 includes a liquid inlet 501, a liquid discharge port 502 and a gas discharge port 503. The liquid inlet 501 is communicated with the outlet of the first oil-gas condensation pipe 112, and the liquid discharge port 502 is communicated with the storage tank 2.

[0042] According to the above structural design, after the oil-gas in the storage tank 2 is compressed by the second compressor 3, high-temperature and high-pressure oil-gas is formed. After the high-temperature and high-pressure oil-gas enters the second oil-gas condenser 4, heat is released, and most of the high-temperature and high-pressure oil-gas condenses into liquid oil, and a small part of the oil-gas exists in the form of gaseous oil and impurity gas. The mixture of liquid oil, gaseous oil and air then enters the first oil-gas condensation pipe 112 for secondary condensation, so that the gaseous oil is fully condensed. Subsequently, the liquid oil formed by condensation in the first oil-gas condensation pipe 112 enters the gas-liquid separator 5 for gas-liquid separation. Among them, the liquid oil flows back to the storage tank 2, and a very small part of the gaseous oil and impurity gas also flows back to the storage tank 2, and is mixed with the oil-gas in the storage tank 2 and then condensed and recovered again.

[0043] Refer to Figure 5 As shown, a drain valve 7 is provided on the pipeline connecting the liquid discharge port 502 of this embodiment with the storage tank 2. The working principle of the drain valve 7 is based on the control of the internal pressure of the pipeline, that is, the opening and closing of the drain valve 7 is controlled by controlling the pressure inside the pipeline.

[0044] Specifically, when the pressure in the above pipeline reaches a certain value, the drain valve 7 automatically opens to discharge the liquid oil. During the discharge process of the liquid oil, due to the certain pressure in the liquid discharge pipeline, under the action of this pressure, the liquid oil adhering to the inner wall of the pipeline can be completely discharged into the storage tank 2, avoiding a large amount of liquid oil adhering to the inner wall of the pipeline and improving the oil and gas recovery efficiency.

[0045] Refer to Figure 5 As shown, a pressure detector 8 is provided on the pipeline connecting the input port of the second compressor 3 in this embodiment to the storage tank 2. The pressure detector 8 is used to detect the air pressure in the above pipeline to detect the oil and gas pressure inside the pipeline, so that the user can adjust the working power of the second compressor 3 according to the above oil and gas pressure.

[0046] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0047] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oil and gas condensing device, which is used to condense the oil and gas discharged from the condenser of the tertiary oil and gas recovery equipment, characterized in that: The oil and gas condensing device comprises: A first oil-gas condenser (11) comprises a first oil-gas condensation chamber (111) and a first oil-gas condensation pipe (112) arranged in the first oil-gas condensation chamber (111); A heat exchange medium condenser (12), comprising a heat exchange medium condensation chamber (121) and a heat exchange medium condensation pipe (122) disposed in the heat exchange medium condensation chamber (121); the heat exchange medium condenser (12) is provided with an opening (123) communicating with the heat exchange medium condensation chamber (121); and the outlet of the heat exchange medium condensation pipe (122) is connected to the inlet of the first oil and gas condensation chamber (111); A heat dissipation fan (13), the air outlet side of which faces the opening (123); The first compressor (14) has an input port connected to the outlet of the first oil and gas condensation chamber (111), and an output port connected to the inlet of the heat exchange medium condensation chamber (121).

2. The oil-gas condensing device according to claim 1, characterized in that: The heat dissipation fan (13) is installed on the outer wall of the heat exchange medium condenser (12).

3. The oil-gas condensing device according to claim 1, characterized in that: A first thermal insulation cotton (15) is at least partially sheathed on a pipe connecting the inlet of the first oil and gas condensation chamber (111) and the outlet of the heat exchange medium condensation pipe (122).

4. The oil-gas condensing device according to claim 3, characterized in that: The first thermal insulation cotton (15) extends to the outer wall of the first oil-gas condenser (11).

5. The oil-gas condensing device according to claim 1, characterized in that: A second thermal insulation cotton (16) is at least partially sheathed on a pipe connecting the outlet of the first oil and gas condensation chamber (111) and the input port of the first compressor (14).

6. The oil-gas condensing device according to claim 5, characterized in that: The second thermal insulation cotton (16) extends to the outer wall of the first oil-gas condenser (11).

7. The oil-gas condensing device according to claim 1, characterized in that: The first oil and gas condensation pipe (112) is a coil; and / or, The heat exchange medium condenser tube (122) is a coil.

8. A tertiary oil and gas recovery device, which is used to recover oil and gas in an oil storage tank (2), characterized in that: The tertiary oil and gas recovery equipment includes: A second compressor (3), the input port of which is in communication with the oil storage tank (2); A second oil-gas condenser (4) comprises a second oil-gas condensation chamber and a second oil-gas condensation pipe arranged in the second oil-gas condensation chamber, wherein the inlet of the second oil-gas condensation pipe is connected to the output port of the second compressor (3); The oil-gas condensing device (1) according to any one of claims 1 to 7, wherein the inlet of the first oil-gas condensing pipe (112) is connected to the outlet of the second oil-gas condensing pipe; The gas-liquid separator (5) comprises a liquid inlet (501), a liquid discharge port (502) and an exhaust port (503), wherein the liquid inlet (501) is connected to the outlet of the first oil-gas condensation pipe (112), and the liquid discharge port (502) is connected to the oil storage tank (2).

9. The tertiary oil and gas recovery equipment according to claim 8, characterized in that: A drain valve (7) is provided on the pipeline connecting the liquid discharge port (502) and the oil storage tank (2).

10. The tertiary oil and gas recovery equipment according to claim 8, characterized in that: A pressure detector (8) is provided on the pipeline connecting the input port of the second compressor (3) and the oil storage tank (2).

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