Connecting structure between vacuum pump and refrigeration system suitable for oil and gas recovery

Abstract

The utility model relates to the technical field of oil gas recovery discloses the connecting structure between vacuum pump and refrigerating system suitable for oil gas recovery, including vacuum pump and refrigeration side pipe, the oil gas side pipe that vacuum pump is connected with multiple oil gas adsorption tower intercommunication, vacuum pump through oil gas side pipe to multiple oil gas adsorption tower alternately evacuates vacuum, be equipped with the connecting head between oil gas side pipe and refrigeration side pipe, the connecting head has first valve, through first valve, oil gas side pipe and refrigeration side pipe between intercommunication or break, be equipped with multiple connecting pipes that the vacuum interface of oil gas recovery refrigeration system intercommunication on refrigeration side pipe, be equipped with second valve between refrigeration side pipe and connecting pipe, through second valve, refrigeration side pipe and intercommunication pipe intercommunication or break, thereby realized the efficient cooperation of refrigeration demand and vacuum demand, make the vacuum process more efficient and stable.

Description

Technical Field

[0001] This utility model relates to the technical field of oil and gas recovery, and more specifically, to a connection structure between a vacuum pump and a refrigeration system suitable for oil and gas recovery. Background Technology

[0002] In the field of oil and gas recovery, with increasingly stringent environmental policies, especially in the recovery and treatment of high-concentration volatile organic compounds (VOCs) waste gas, the "condensation + adsorption" process has become the mainstream. This process first requires a high initial vacuum degree to be achieved by evacuating before adding refrigerant, so that the subsequent mechanical refrigeration method of the compressor can be used to enable the refrigeration and adsorption processes to operate efficiently.

[0003] Currently, most oil and gas recovery projects use small vacuum pumps and 1 / 4-inch refrigerant charging hoses for vacuuming. However, small vacuum pumps have low vacuuming efficiency, and it takes at least 2 days for a single oil and gas recovery refrigeration system. In large projects or when multiple systems are running in parallel, the time can even be extended to 4 to 5 days, which seriously affects the project commissioning schedule.

[0004] Furthermore, in existing technologies, vacuum pumps can typically only evacuate a single adsorption tower, lacking flexible switching capabilities, resulting in low efficiency during the evacuation process. At the same time, the connection interface sizes of existing vacuum pumps and refrigeration systems are mismatched, causing equipment redundancy and operational inconvenience, making it difficult to meet the needs of industrial scenarios for oil and gas recovery. Utility Model Content

[0005] The purpose of this invention is to provide a connection structure between a vacuum pump and a refrigeration system suitable for oil and gas recovery, aiming to solve the problem of low vacuuming efficiency of oil and gas adsorption towers in the prior art.

[0006] This utility model is implemented as follows: a connection structure between a vacuum pump and a refrigeration system for oil and gas recovery includes a vacuum pump and a refrigeration side pipe. The vacuum pump is connected to an oil and gas side pipe that communicates with multiple oil and gas adsorption towers. The vacuum pump alternately evacuates the multiple oil and gas adsorption towers through the oil and gas side pipe. A connector is provided between the oil and gas side pipe and the refrigeration side pipe. The connector has a first valve, which connects or disconnects the oil and gas side pipe from the refrigeration side pipe. The refrigeration side pipe is provided with multiple connecting pipes that are connected to the vacuum interface of the oil and gas recovery refrigeration system. A second valve is provided between the refrigeration side pipe and the connecting pipe. The refrigeration side pipe and the connecting pipe are connected or disconnected through the second valve.

[0007] Furthermore, the oil and gas side pipe is provided with an oil and gas side exhaust connector, one end of which has an oil and gas side end, which is connected to the oil and gas side exhaust connector.

[0008] Furthermore, the refrigeration side pipe has a refrigeration side air extraction connector, and the other end of the connector has a refrigeration side end, which is connected to the refrigeration side air extraction connector. The first valve is located between the oil / gas side end and the refrigeration side end.

[0009] Furthermore, the first valve is a ball valve.

[0010] Furthermore, the refrigeration side end is formed at one end of the refrigeration side tube, and the other end of the refrigeration side tube is closed.

[0011] Furthermore, multiple connecting pipes are arranged on the side of the refrigeration side pipe.

[0012] Furthermore, the side of the refrigeration side pipe is provided with multiple side pipes, and the multiple side pipes are connected to the refrigeration side pipe; a second valve is provided on the side pipe, and the second valve is connected to the connecting pipe, so as to connect or disconnect the side pipe from the connecting pipe through the second valve.

[0013] Furthermore, the second valve is a needle valve.

[0014] Furthermore, one end of the connecting pipe is connected to the second valve, and the other end of the connecting pipe has a connecting end; the vacuum connector of the oil and gas recovery refrigeration system is 1 / 4 inch in size, and the connecting end is connected to the vacuum connector.

[0015] Furthermore, the refrigeration side pipe is provided with an inner cylinder, which extends along the axial direction of the refrigeration side pipe; the top of the inner cylinder extends to the top of the refrigeration side pipe and communicates with the first valve, and the bottom of the inner cylinder extends to the bottom of the refrigeration side pipe and has a funnel-shaped open bottom opening. The inner cylinder has a cavity, and an outer annular cavity is formed between the inner cylinder and the refrigeration side tube. The outer annular cavity is connected to the cavity through a bottom opening. A plurality of side tubes are arranged at intervals along the axial direction of the refrigeration side tube, and the side tubes are connected to the outer annular cavity.

[0016] Compared with the prior art, the connection structure between the vacuum pump and the refrigeration system for oil and gas recovery provided by this utility model optimizes resource utilization and reduces the time cost of vacuuming each tower by connecting the vacuum pump with multiple oil and gas adsorption towers and adopting an alternating vacuuming method, thereby improving the overall vacuuming efficiency. Meanwhile, the connector and the first valve between the oil and gas side pipe and the refrigeration side pipe can realize the opening and closing of the two, avoiding the coordination contradiction between vacuuming and refrigeration. In addition, the configuration of multiple connecting pipes on the refrigeration side pipe and the second valve further enhances the adaptability of the refrigeration system to oil and gas recovery scenarios, making the vacuuming process more efficient and stable. Moreover, by setting the first valve and the second valve and effectively controlling them, the efficient coordination of refrigeration demand and vacuuming demand is achieved, thereby improving the overall performance of the oil and gas recovery system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the connection structure between the vacuum pump and the refrigeration system for oil and gas recovery provided by this utility model; Figure 2 This is a partial cross-sectional schematic diagram of the refrigeration side pipe provided by this utility model; In the diagram: vacuum pump 100, oil-gas side pipe 101, oil-gas side extraction connector 102; Refrigeration side pipe 200, refrigeration side air extraction connector 201, side pipe 202, connecting pipe 203, connecting end 204, needle valve 205, inner cylinder 206, cylinder cavity 207, bottom opening 208, outer ring cavity 209. Connector 300, oil / gas side connector 301, refrigeration side connector 302, ball valve 303. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0020] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] Reference Figure 1-2 The image shown is a preferred embodiment of the present invention.

[0022] A connection structure between a vacuum pump and a refrigeration system suitable for oil and gas recovery includes a vacuum pump 100 and a refrigeration side pipe 200. The vacuum pump 100 is connected to an oil and gas side pipe 101 that communicates with multiple oil and gas adsorption towers. The vacuum pump 100 alternately evacuates the multiple oil and gas adsorption towers through the oil and gas side pipe 101. A connector 300 is provided between the oil and gas side pipe 101 and the refrigeration side pipe 200. The connector 300 has a first valve, which connects or disconnects the oil and gas side pipe 101 and the refrigeration side pipe 200. The refrigeration side pipe 200 is provided with multiple connecting pipes 203 that are connected to the vacuum interface of the oil and gas recovery refrigeration system. A second valve is provided between the refrigeration side pipe 200 and the connecting pipes 203. The refrigeration side pipe 200 is connected to or disconnected from the connecting pipe through the second valve.

[0023] The connection structure between the vacuum pump 100 and the refrigeration system provided above for oil and gas recovery, through the connection between the vacuum pump 100 and multiple oil and gas adsorption towers, adopts an alternating vacuuming method, which optimizes resource utilization, reduces the time cost of vacuuming tower by tower, and thus improves the overall vacuuming efficiency. Meanwhile, the connector 300 and the first valve between the oil and gas side pipe 101 and the refrigeration side pipe 200 can realize the opening and closing of the two, avoiding the coordination contradiction between vacuuming and freezing. Furthermore, the configuration of multiple connecting pipes 203 on the refrigeration side pipe 200 and the second valve further enhances the adaptability of the refrigeration system to oil and gas recovery scenarios, making the vacuuming process more efficient and stable. Moreover, by setting the first valve and the second valve and effectively controlling them, the efficient coordination of refrigeration demand and vacuuming demand is achieved, thereby improving the overall performance of the oil and gas recovery system.

[0024] In this embodiment, the oil and gas side pipe 101 is provided with an oil and gas side exhaust connector 102, and one end of the connector 300 has an oil and gas side end 301, which is connected to the oil and gas side exhaust connector 102.

[0025] This ensures efficient connection between the oil and gas side pipe 101 and the connector 300, reducing the risk of vacuum leakage. In practical applications, such as when multiple adsorption towers work alternately in an oil and gas recovery system, a stable connection structure can effectively improve vacuuming efficiency, avoid damage to the vacuum environment due to loose interfaces, reduce wasted time and energy consumption, and thus optimize the reliability and economy of operation.

[0026] In this embodiment, the refrigeration side pipe 200 has a refrigeration side air extraction connector 201, and the other end of the connector 300 has a refrigeration side end 302. The refrigeration side end 302 is connected to the refrigeration side air extraction connector 201, and the first valve is set between the oil and gas side end 301 and the refrigeration side end 302.

[0027] This makes the connection or disconnection between the oil and gas side pipe 101 and the refrigeration side pipe 200 more flexible. In particular, by closing the first valve, the operation of the refrigeration system can be controlled independently, optimizing the switching efficiency of the condensation and adsorption stages during the vacuuming process, avoiding mutual interference that would lead to a decrease in the vacuuming effect, thereby improving the synergy of the entire oil and gas recovery system.

[0028] In this embodiment, the first valve is a ball valve 303; the ball valve 303 can be a spherical valve, which is a valve that achieves on / off switching by rotating a ball, and has the characteristics of convenient switching, good sealing performance and wide applicability.

[0029] When multiple oil and gas adsorption towers are alternately vacuumed, the ball valve 303 can respond quickly to realize the timely connection or disconnection of the oil and gas side pipe 101 and the refrigeration side pipe 200. The efficient sealing performance of the ball valve 303 ensures the stability of the vacuum environment of the refrigeration system during the switching process, reduces the extension of vacuuming time caused by slow valve opening and closing or poor sealing, and significantly improves vacuuming efficiency.

[0030] In this embodiment, the cooling end 302 is formed at one end of the cooling side tube 200, and the other end of the cooling side tube 200 is closed.

[0031] This ensures that the vacuum environment will not be disrupted by external air infiltration during the operation of the cooling side tube 200, thus improving the stability and efficiency of vacuuming. In actual operation of oil and gas recovery, such as when multiple adsorption towers work alternately, the closed refrigeration side pipe 200 can effectively maintain the vacuum level of the system, avoid energy waste and prolonged vacuuming time caused by pipe openings, and enhance the reliability and economy of the entire system.

[0032] In this embodiment, multiple connecting pipes 203 are arranged on the side of the cooling side pipe 200; this improves the multi-tasking capability of the cooling side pipe 200.

[0033] When multiple refrigeration systems need to be evacuated simultaneously, multiple connecting pipes 203 can be connected to multiple evacuation ports at the same time, avoiding the tedious operation of repeatedly disassembling and connecting traditional single ports, greatly improving the system's working efficiency. In addition, the flexible port arrangement also enhances the system's compatibility and scalability, making it more suitable for the needs of oil and gas recovery scenarios.

[0034] In this embodiment, the side of the refrigeration side pipe 200 is provided with multiple side pipes, which are connected to the refrigeration side pipe 200; a second valve is provided on the side pipe, which is connected to the connecting pipe 203, and the side pipe is connected to or disconnected from the connecting pipe through the second valve.

[0035] By setting a second valve, effective control of multiple vacuum ports is achieved. In practical applications, such as large-scale oil and gas recovery systems that need to connect multiple adsorption towers or refrigeration systems simultaneously, operators can allocate vacuum resources as needed through the second valve, avoiding resource waste and operational chaos, improving the system's multi-tasking capability, and enhancing its flexibility and practicality in adapting to large-scale oil and gas recovery scenarios.

[0036] In this embodiment, the second valve is a needle valve 205; the needle valve 205 can be a needle-type valve, which has the characteristics of compact structure, small size, high adjustment accuracy and high sealing performance, and is suitable for control scenarios that require precise control of small flow and high pressure.

[0037] When multiple vacuum ports need to be evacuated at different rates, the needle valve 205 can precisely control the flow rate to ensure that the vacuuming effect of each port reaches the best. This adjustment capability not only improves the overall efficiency, but also reduces the extended vacuuming time or energy waste caused by uneven flow, thereby optimizing the overall operating performance.

[0038] In this embodiment, one end of the connecting pipe 203 is connected to the second valve, and the other end of the connecting pipe 203 has a connecting end 204; the size of the vacuum connector of the oil and gas recovery refrigeration system is 1 / 4 inch, and the connecting end 204 is connected to the vacuum connector.

[0039] The vacuum connector mentioned in this embodiment is found on the refrigeration compressor of the oil and gas recovery refrigeration system. This solves the problem of interface mismatch in traditional refrigeration systems. Before adding refrigerant, after achieving a high initial vacuum by vacuuming, the operator can directly use the refrigeration compressor for mechanical refrigeration without the need for additional matching connector 204. This improves the convenience of operation, reduces interface conversion steps, and thus optimizes the overall operating efficiency.

[0040] The 1 / 4-inch vacuum connector of the oil and gas recovery refrigeration system mentioned in this embodiment is conventionally used in the industry to connect to a small vacuum pump 100 equipped for the oil and gas recovery project. However, the small vacuum pump 100 has a low vacuuming efficiency. This utility model utilizes the vacuum pump 100 that is built into the oil and gas recovery system to achieve a higher efficiency in vacuuming the oil and gas adsorption tower. Therefore, the 1 / 4-inch vacuum connector mentioned in this embodiment can preferably be the one that is already present in the refrigeration compressor of the oil and gas recovery refrigeration system, eliminating the need for an additional small vacuum pump 100. Before adding refrigerant, a higher initial vacuum degree can be achieved by using the small vacuum pump 100 to create a vacuum.

[0041] In this embodiment, the refrigeration side pipe 200 is provided with an inner cylinder 206, which extends along the axial direction of the refrigeration side pipe 200; the top of the inner cylinder 206 extends to the top of the refrigeration side pipe 200 and communicates with the first valve, and the bottom of the inner cylinder 206 extends to the bottom of the refrigeration side pipe 200, and has a funnel-shaped open bottom opening 208. The inner cylinder 206 has a cavity 207, and an outer annular cavity 209 is formed between the inner cylinder 206 and the refrigeration side pipe 200. The outer annular cavity 209 is connected to the cavity 207 through the bottom opening 208. Multiple side pipes are arranged at intervals along the axial direction of the refrigeration side pipe 200, and the side pipes are connected to the outer annular cavity 209.

[0042] This structural arrangement optimizes the gas flow path, enabling the gas to be evenly distributed and flow efficiently during the vacuuming process, thereby achieving more efficient vacuuming for multiple refrigeration systems. Especially when multiple refrigeration systems need to be evacuated simultaneously, uniform gas flow ensures consistent evacuation results at each interface, avoiding a decrease in evacuation efficiency due to local pressure drops. It also reduces energy consumption and improves the overall performance and stability of evacuation.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connection structure between a vacuum pump and a refrigeration system suitable for oil and gas recovery, characterized in that, It includes a vacuum pump and a cooling side pipe. The vacuum pump is connected to an oil and gas side pipe that communicates with multiple oil and gas adsorption towers. The vacuum pump alternately evacuates the multiple oil and gas adsorption towers through the oil and gas side pipe. A connector is provided between the oil and gas side pipe and the cooling side pipe. The connector has a first valve. The first valve connects or disconnects the oil and gas side pipe and the cooling side pipe. The refrigeration side pipe is provided with multiple connecting pipes that are connected to the vacuum interface of the oil and gas recovery refrigeration system. A second valve is provided between the refrigeration side pipe and the connecting pipe. The refrigeration side pipe and the connecting pipe are connected or disconnected through the second valve.

2. The connection structure between the vacuum pump and the refrigeration system for oil and gas recovery as described in claim 1, characterized in that, The oil and gas side pipe is equipped with an oil and gas side exhaust connector, one end of which has an oil and gas side end, which is connected to the oil and gas side exhaust connector.

3. The connection structure between the vacuum pump and the refrigeration system for oil and gas recovery as described in claim 1, characterized in that, The refrigeration side pipe has a refrigeration side air extraction connector, and the other end of the connector has a refrigeration side end. The refrigeration side end is connected to the refrigeration side air extraction connector, and the first valve is located between the oil / gas side end and the refrigeration side end.

4. The connection structure between the vacuum pump and the refrigeration system for oil and gas recovery as described in claim 1, characterized in that, The first valve is a ball valve.

5. The connection structure between the vacuum pump and the refrigeration system for oil and gas recovery as described in claim 3, characterized in that, The refrigeration end is formed at one end of the refrigeration side tube, and the other end of the refrigeration side tube is closed.

6. The connection structure between the vacuum pump and the refrigeration system for oil and gas recovery as described in claim 1, characterized in that, Multiple of the connecting pipes are arranged on the side of the refrigeration side pipe.

7. The connection structure between the vacuum pump and the refrigeration system for oil and gas recovery as described in claim 1, characterized in that, The side of the refrigeration side pipe is provided with multiple side pipes, and the multiple side pipes are connected to the refrigeration side pipe; a second valve is provided on the side pipe, and the second valve is connected to the connecting pipe. The side pipe and the connecting pipe are connected or disconnected through the second valve.

8. The connection structure between the vacuum pump and the refrigeration system for oil and gas recovery as described in claim 1, characterized in that, The second valve is a needle valve.

9. The connection structure between the vacuum pump and the refrigeration system for oil and gas recovery as described in any one of claims 1-8, characterized in that, One end of the connecting pipe is connected to the second valve, and the other end of the connecting pipe has a connecting end; the vacuum connector of the oil and gas recovery refrigeration system is 1 / 4 inch in size, and the connecting end is connected to the vacuum connector.

10. The connection structure between the vacuum pump and the refrigeration system for oil and gas recovery as described in claim 7, characterized in that, The refrigeration side pipe is provided with an inner cylinder, which extends along the axial direction of the refrigeration side pipe; the top of the inner cylinder extends to the top of the refrigeration side pipe and communicates with the first valve, and the bottom of the inner cylinder extends to the bottom of the refrigeration side pipe and has a funnel-shaped open bottom opening. The inner cylinder has a cavity, and an outer annular cavity is formed between the inner cylinder and the refrigeration side tube. The outer annular cavity is connected to the cavity through a bottom opening. A plurality of side tubes are arranged at intervals along the axial direction of the refrigeration side tube, and the side tubes are connected to the outer annular cavity.

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