Filter for oil and gas gathering and transportation

Abstract

The utility model discloses a filter for oil and gas gathering and transportation, and belongs to the technical field of oil and gas filters. Comprising a shell, a connecting cover is arranged on the bottom face of the shell, a filtering piece is installed in the center of the top face of the connecting cover and used for separating oil and gas, the center of the bottom face of the connecting cover communicates with a feeding pipe, the side face of the feeding pipe communicates with a backflow pipe, and the backflow pipe communicates with a one-way valve; a three-way ball valve is connected between the guide pipe and the backflow pipe and further communicated with a discharging pipe, and a detection piece is installed on the outer side of the guide pipe and used for detecting the oil content. The filter applied to oil and gas gathering and transportation can be used for detecting filtered gas, and filtered impure gas is poured into the filter again to be filtered, so that the purity of the gas is improved.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas filter technology, specifically a filter for oil and gas gathering and transportation. Background Technology

[0002] The function of a gas gathering and transportation system is to collect the products of oil wells scattered throughout the oil field, separate them into crude oil, associated natural gas and produced water, and carry out necessary purification and processing to make them into oil field commodities, as well as the storage and external transportation of these commodities. During the oil and gas gathering and transportation process, the entire system through which the crude oil passes is closed, that is, it does not come into contact with the atmosphere. This gathering and transportation technology is called closed-loop oil and gas gathering and transportation.

[0003] In the process of airtight gathering and transportation, in order to reduce transportation pressure, various filters are needed to separate and remove impurities from oil and gas. The existing filters for oil and gas gathering and transportation do not have the ability to detect the filtered gas. When the gas is not filtered pure, it cannot be filtered a second time. Utility Model Content

[0004] The purpose of this invention is to provide a filter for oil and gas gathering and transportation to solve the problems mentioned in the background art.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A filter for oil and gas gathering and transportation includes a housing, a connecting cover on the bottom surface of the housing, a filter element installed at the center of the top surface of the connecting cover for separating oil and gas, an inlet pipe connected to the center of the bottom surface of the connecting cover, a return pipe connected to the side of the inlet pipe, a one-way valve connected to the return pipe, and a conduit connected to the top of the housing. A three-way ball valve connects the conduit and the return pipe. When the detector detects that the oil content in the gas exceeds the standard, i.e., the filtration is impure, the gas can be directed to the return pipe by operating the three-way ball valve. The one-way valve ensures that the gas can only flow from the three-way ball valve to the inlet pipe, preventing backflow. The unfiltered gas will flow back to the inlet pipe and re-enter the filter for secondary filtration. The three-way ball valve is also connected to an outlet pipe. After passing the test, the flow direction is switched again by the three-way ball valve and discharged from the outlet pipe. A detector is installed on the outside of the conduit for detecting oil content.

[0007] Furthermore, the detection element includes a pair of light-transmitting plates embedded on the outside of the conduit, and the pair of light-transmitting plates are symmetrical about the axis of the conduit. An infrared emitter is mounted on the side of one of the light-transmitting plates, and an infrared receiver is mounted on the side of the other light-transmitting plate. The infrared receiver receives the infrared rays emitted by the infrared emitter. When the filtered gas passes through the conduit, the infrared rays emitted by the infrared emitter pass through the gas and are received by the infrared receiver. If the gas contains oil, the oil will absorb the infrared rays, causing a change in the intensity of the infrared rays received by the infrared receiver. Based on the change in the infrared intensity and according to Beer-Lambert's law, the oil content in the gas can be detected.

[0008] Furthermore, the light-transmitting sheet is fixed to the outside of the conduit with sealant.

[0009] Furthermore, the output end of the one-way valve is close to the feed pipe, and the input end of the one-way valve is close to the three-way ball valve.

[0010] Furthermore, the filter element includes a first filter screen and a second filter screen installed on the top surface of the connecting cover, with the second filter screen located inside the first filter screen. The connecting cover has a through hole inside, and the feed pipe communicates with the through hole. When the oil-gas mixture enters from the feed pipe and reaches the filter element through the through hole inside the connecting cover, the first filter screen first performs preliminary filtration of the oil-gas mixture, intercepting larger particles of impurities and oil droplets. Then, the second filter screen further filters the remaining smaller particles of impurities and oil droplets, thus achieving multi-stage filtration.

[0011] Furthermore, the bottom surface of the outer casing has an opening, and the connecting cover is threadedly engaged with the opening. The connecting cover is wrapped with PTFE tape and has a quick-release capability. After disconnecting the return pipe and the three-way ball valve, the connecting cover can be rotated to complete the replacement of the filter element.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: This filter for oil and gas gathering and transportation enables real-time detection and secondary filtration of the filtered gas. By accurately detecting the oil content in the gas through a detection element, impure gas is filtered again, significantly improving the purity of the output gas. This helps reduce malfunctions and losses in subsequent oil and gas processing, improves product quality, and ensures the stable operation of the oil and gas gathering and transportation system. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a filter for oil and gas gathering and transportation disclosed in an embodiment of the present utility model;

[0014] Figure 2 for Figure 1 Enlarged schematic diagram of structure A in the middle;

[0015] Figure 3 This is a side view of the filter for oil and gas gathering and transportation disclosed in an embodiment of the present utility model;

[0016] Figure 4 This is a cross-sectional structural diagram of a filter for oil and gas gathering and transportation disclosed in an embodiment of this utility model.

[0017] In the diagram: 1. Outer shell; 2. Connecting cover; 3. Feed pipe; 4. Return pipe; 5. Three-way ball valve; 6. Discharge pipe; 7. Guide pipe; 8. Infrared transmitter; 9. Infrared receiver; 10. Light-transmitting sheet; 11. Through hole; 12. First filter screen; 13. Second filter screen. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a filter for oil and gas gathering and transportation, including a shell 1, a connecting cover 2 on the bottom surface of the shell 1, a filter element installed at the center of the top surface of the connecting cover 2, the filter element being used to separate oil and gas, an inlet pipe 3 connected to the center of the bottom surface of the connecting cover 2, a return pipe 4 connected to the side of the inlet pipe 3, a one-way valve connected to the return pipe 4, a conduit 7 connected to the top of the shell 1, and a three-way ball valve 5 connected between the conduit 7 and the return pipe 4. When the detector detects that the oil content of the gas exceeds the standard, i.e., the filtration is not pure, the gas can be directed to the return pipe 4 by operating the three-way ball valve 5. The one-way valve ensures that the gas can only flow from the three-way ball valve 5 to the inlet pipe 3, preventing backflow of gas. The unfiltered gas will flow back to the inlet pipe 3 and re-enter the filter for secondary filtration. The three-way ball valve 5 is also connected to the outlet pipe 6. After the gas passes the test, the flow direction is switched again by the three-way ball valve 5 and discharged from the outlet pipe 6. A detector element is installed on the outside of the conduit 7, which is used to detect the oil content.

[0020] As an embodiment of this utility model, the detection element further includes a pair of light-transmitting plates 10 embedded on the outside of the conduit 7, and the pair of light-transmitting plates 10 are symmetrical about the axis of the conduit 7. An infrared emitter 8 is installed on the side of one of the light-transmitting plates 10, and an infrared receiver 9 is installed on the side of the other light-transmitting plate 10. The infrared receiver 9 receives the infrared rays emitted by the infrared emitter 8. When the filtered gas passes through the conduit 7, the infrared rays emitted by the infrared emitter 8 pass through the gas and are received by the infrared receiver 9. If the gas contains oil, the oil will absorb the infrared rays, causing the intensity of the infrared rays received by the infrared receiver 9 to change. Based on the change in the intensity of the infrared rays and according to the Lambert-Beer law, the oil content in the gas can be detected.

[0021] As one embodiment of this utility model, the light-transmitting sheet 10 is further fixed to the outside of the conduit 7 by sealant.

[0022] As one embodiment of this utility model, the output end of the one-way valve is closer to the feed pipe 3, and the input end of the one-way valve is closer to the three-way ball valve 5.

[0023] As an embodiment of this utility model, the filter element further includes a first filter screen 12 and a second filter screen 13 installed on the top surface of the connecting cover 2, and the second filter screen 13 is located inside the first filter screen 12. The connecting cover 2 has a through hole 11 inside, and the feed pipe 3 is connected to the through hole 11. When the oil-gas mixture enters from the feed pipe 3 and reaches the filter element through the through hole 11 inside the connecting cover 2, the first filter screen 12 first performs preliminary filtration on the oil-gas mixture, intercepting larger particles of impurities and oil droplets. Then, the second filter screen 13 further filters the remaining smaller particles of impurities and oil droplets, thus realizing multi-stage filtration.

[0024] As an embodiment of this utility model, the bottom surface of the outer shell 1 has an opening, the connecting cover 2 is threadedly engaged with the opening, the connecting cover 2 is wrapped with PTFE tape, and the connecting cover 2 has the ability to be quickly disassembled. After disconnecting the return pipe 4 and the three-way ball valve 5, the connecting cover 2 can be rotated to complete the replacement of the filter element.

[0025] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is through a controller. The control circuit of the controller, detection element and three-way ball valve can be implemented by a person skilled in the art through simple programming, which is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

Claims

1. A filter for oil and gas gathering and transportation, characterized in that, include: The outer casing (1) has a connecting cover (2) on its bottom surface. A filter element is installed at the center of the top surface of the connecting cover (2) for separating oil and gas. A feed pipe (3) is connected to the center of the bottom surface of the connecting cover (2). A return pipe (4) is connected to the side of the feed pipe (3). A one-way valve is connected to the return pipe (4). A conduit (7) is connected to the top of the outer casing (1). A three-way ball valve (5) is connected between the conduit (7) and the return pipe (4). The three-way ball valve (5) is also connected to the discharge pipe (6). A detection element is installed on the outside of the conduit (7) for detecting oil content. The detection element includes a pair of light-transmitting sheets (10) embedded on the outside of the conduit (7), and the pair of light-transmitting sheets (10) are symmetrical about the axis of the conduit (7). An infrared emitter (8) is installed on the side of one of the light-transmitting sheets (10), and an infrared receiver (9) is installed on the side of the other light-transmitting sheet (10). The infrared receiver (9) receives the infrared rays emitted by the infrared emitter (8). The filter element includes a first filter (12) and a second filter (13) installed on the top surface of the connecting cover (2), and the second filter (13) is located inside the first filter (12).

2. A filter for oil and gas gathering and transportation according to claim 1, characterized in that, The light-transmitting sheet (10) is fixed to the outside of the conduit (7) by sealant.

3. A filter for oil and gas gathering and transportation according to claim 1, characterized in that, The output end of the one-way valve is close to the feed pipe (3), and the input end of the one-way valve is close to the three-way ball valve (5).

4. A filter for oil and gas gathering and transportation according to claim 1, characterized in that, The connecting cover (2) has a through hole (11) inside, and the feed pipe (3) is connected to the through hole (11).

5. A filter for oil and gas gathering and transportation according to claim 1, characterized in that, The bottom surface of the outer casing (1) has an opening, and the connecting cover (2) is threadedly engaged with the opening.

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