A petroleum production filtering device

Abstract

The utility model relates to a petroleum exploitation filter device belongs to petroleum exploitation filter device technical field. This petroleum exploitation filter device, include: oil inlet pipe and oil outlet pipe, one end fixed mounting of oil inlet pipe has filter box, the outside fixed connection of oil outlet pipe and filter box, and oil outlet pipe and filter box inside link together, detect filter mechanism for detecting filter component blockage degree the detection filter mechanism sets up in one side of filter box, wherein, the detection filter mechanism includes setting up in filter box inside filter drum, the detection filter mechanism in filter box can real -time detection filter drum flow, when flow reduction first vibration shakes off impurity and recovers the filtering capacity quickly, if still not recover automatically closes oil inlet pipe, realizes quick replacement, and the backflushing assembly of oil inlet pipe side can cooperate vibration and inject reverse gas or liquid into the inside and outside of filter drum and shock impurity, realize online cleaning, delay blockage and reduce replacement frequency.

Description

Technical Field

[0001] This utility model relates to the technical field of oil extraction filtration devices, and in particular to an oil extraction filtration device. Background Technology

[0002] During oil extraction and pipeline transportation, drilling fluids, produced fluids, and injection water typically contain a large number of solid particles, gravel, and impurities. If not filtered in time, these can easily cause pump and valve wear, tubing blockage, and malfunctions in subsequent separation equipment. Therefore, filtration devices are usually installed at the wellhead or on the pipeline to intercept impurities in the fluid using filter cartridges or elements.

[0003] Existing oilfield filtration systems mostly use fixed filter cartridge structures, relying on differential pressure gauges or flow meters to monitor filter cartridge clogging. When the differential pressure increases or the flow rate decreases, the system must be shut down, the inlet valve closed, and the pressure released before the housing is disassembled to remove the filter cartridge for cleaning or replacement. However, these systems lack effective online treatment methods in the early stages of clogging, allowing impurities to easily accumulate on the filter cartridge surface, leading to a sudden drop in flow rate. This not only affects usability but also often occurs before the filter cartridge needs to be replaced. Utility Model Content

[0004] Therefore, it is necessary to provide an oil extraction filtration device that addresses the problem that existing oil extraction filtration devices rely on differential pressure or flow rate to monitor blockage, but lack online treatment methods in the early stages of blockage, and impurities easily accumulate on the filter element surface, causing a sudden drop in flow rate, which affects use but does not yet warrant replacement.

[0005] A filtration device for oil extraction includes: an inlet pipe and an outlet pipe, with a filter box fixedly installed at one end of the inlet pipe, the outlet pipe being fixedly connected to the outside of the filter box and communicating with the inside of the filter box; a filter detection mechanism for detecting the degree of clogging of filter components, the filter detection mechanism being disposed on one side of the filter box; wherein, the filter detection mechanism includes a filter cylinder disposed inside the filter box, a filter assembly for detecting clogging and quickly replacing the filter cylinder is disposed on the outside of the filter cylinder, and a backflushing assembly is disposed on one side of the inlet pipe.

[0006] The filter assembly includes an electronic valve fixedly installed on the surface of the oil inlet pipe, a flow sensor fixedly installed on the surface of the oil outlet pipe, and the detection end of the flow sensor extending into the interior of the oil outlet pipe. An impact block is provided inside the filter box, a connecting plate is threadedly connected to the bottom of the filter box, the bottom of the filter cylinder is slidably connected to the connecting plate, and a handle is fixedly installed on the bottom of the connecting plate.

[0007] A sealing tube is fixedly installed on the surface of the filter box, and an electric push rod is fixedly installed on the outside of the sealing tube. The output end of the electric push rod is located on one side of the impact block.

[0008] The side of the impact block closest to the filter cylinder is set as an arc surface, and the edge of the arc surface of the filter cylinder is set as rounded corners.

[0009] A connecting pipe is provided on the side of the impact block away from the filter cylinder. A movable rod is slidably installed at one end of the connecting pipe, and the other end of the movable rod is fixedly connected to the impact block. A spring is fixedly installed at one end of the movable rod inside the connecting pipe, and the other end of the spring is fixedly connected to the inner wall of the connecting pipe.

[0010] A sealing plate is slidably installed inside the sealing tube, one side of the connecting tube is fixedly connected to the sealing plate, and the output end of the electric push rod is fixedly connected to the other side of the sealing plate.

[0011] The backflushing assembly includes a discharge pipe fixedly installed on the surface of the inlet pipe, and a control valve is fixedly installed on the surface of the discharge pipe.

[0012] The discharge pipe is located at the bottom of the surface of the oil inlet pipe, and the discharge pipe is located on the side of the electronic valve near the filter box.

[0013] Beneficial effects

[0014] 1. By setting up a detection and filtration mechanism inside the filter box, the filter cartridge can detect the flow rate in real time by the filter components. When the flow rate decreases, it will vibrate to shake off the attached impurities to quickly restore the filtration capacity and extend the service life. If the flow rate does not recover after vibration, the oil inlet pipe will be automatically shut off, so that the filter cartridge can be replaced quickly without depressurization or exposure. The backflushing component on the side of the oil inlet pipe can be used in conjunction with vibration to inject reverse gas or liquid into the inside and outside of the filter cartridge to impact and remove impurities, so as to achieve simple online cleaning, delay clogging and reduce the replacement frequency.

[0015] 2. When backflushing the filter cartridge is required, opening the control valve will allow the discharge pipe to guide high-pressure liquid or compressed gas to the inside and outside of the filter cartridge, forming a reverse flow. This will impact and peel off impurities from the filter screen surface, which will then be discharged through the discharge pipe, achieving rapid online cleaning. During backflushing, backflushing liquid can be introduced from the oil outlet pipe, impacting the filter cartridge through the reverse flow before entering the oil inlet pipe. When the oil inlet pipe is closed, the backflushing liquid will only be discharged through the discharge pipe, forming an independent and controlled backflushing path that directionally carries out impurities and prevents them from flowing back and accumulating in the oil inlet pipe. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the detection and filtration mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the filter box of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the sealing tube of this utility model;

[0021] Figure 5 This is a schematic diagram of the recoil assembly structure of this utility model.

[0022] Figure label:

[0023] 100. Oil inlet pipe; 110. Oil outlet pipe; 200. Filter box; 300. Filter detection mechanism; 310. Filter cartridge; 320. Filter assembly; 321. Electronic valve; 322. Flow sensor; 323. Connecting plate; 324. Handle; 325. Impact block; 326. Sealing pipe; 327. Electric push rod; 328. Connecting pipe; 329. Moving rod; 3210. Spring; 3211. Sealing plate; 330. Backflush assembly; 331. Discharge pipe; 332. Control valve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] The following is combined Figures 1-5 This invention describes a filtration device for oil extraction.

[0026] In one embodiment, an oil extraction filtration device includes: an inlet pipe 100 and an outlet pipe 110. A filter box 200 is fixedly installed at one end of the inlet pipe 100, and the outlet pipe 110 is fixedly connected to the outside of the filter box 200 and communicates with the inside of the filter box 200. A filter detection mechanism 300 is disposed on one side of the filter box 200 for detecting the degree of blockage of the filter components. The filter detection mechanism 300 includes a filter cylinder 310 disposed inside the filter box 200, a filter assembly 320 for detecting blockage and quickly replacing the filter cylinder 310 is disposed on the outside of the filter cylinder 310, and a backflushing assembly 330 is disposed on one side of the inlet pipe 100.

[0027] In this embodiment, by setting a detection filter mechanism 300 inside the filter box 200, the filter cartridge 310 can be detected by the filter component 320 during operation. When the flow rate is detected to be reduced, a slight vibration is generated on the filter cartridge 310 to shake off the solid particles attached to the surface, so that its filtration capacity can be quickly restored and the service life can be extended. If the flow rate still does not recover to the set threshold after vibration, the oil inlet pipe 100 can be automatically closed to cut off the inflow of the medium. Thus, the filter cartridge 310 can be quickly replaced without depressurization or exposure. The backflushing component 330 set on one side of the oil inlet pipe 100 can cooperate with the vibration action of the filter cartridge 310 when needed to inject reverse gas or liquid into the inside and outside of the filter cartridge 310 to perform impact peeling of impurities on the filter screen surface, realize online simple cleaning, further delay the clogging process of the filter cartridge 310 and reduce the replacement frequency.

[0028] It should be noted that existing oil extraction filtration devices typically include basic components such as an inlet pipe 100, an outlet pipe 110, a filter box 200, a fixed filter cartridge 310 or filter element, pressure or flow detection components, and valves. The filter assembly 320 is only used to detect the filtration flow in real time and drive the filter cartridge 310 to generate slight vibration to shake off impurities when it is clogged. Its action is short-lived and controllable, and does not affect the filtration accuracy. The backflushing assembly 330 only injects reverse gas or liquid into the inside and outside of the filter cartridge 310 for impact cleaning when needed. Its working state is interlocked with the filtration process and does not introduce additional fluid during normal measurement periods, so as not to affect the normal filtration performance and media delivery of the filtration device.

[0029] like Figure 2 , Figure 3 and Figure 4As shown, the filter assembly 320 includes an electronic valve 321 fixedly installed on the surface of the oil inlet pipe 100, a flow sensor 322 fixedly installed on the surface of the oil outlet pipe 110, and the detection end of the flow sensor 322 extends into the interior of the oil outlet pipe 110. An impact block 325 is provided inside the filter box 200. A connecting plate 323 is threadedly connected to the bottom of the filter box 200. The bottom of the filter cylinder 310 is slidably connected to the connecting plate 323. A handle 324 is fixedly installed on the bottom of the connecting plate 323.

[0030] In this embodiment, the detection end of the flow sensor 322 can monitor the flow rate change inside the oil pipe 110 in real time. When a decrease in flow rate is detected, the impact block 325 set inside the filter box 200 is first driven to slightly impact or vibrate the filter cylinder 310, causing the solid particles attached to the filter screen surface to loosen and fall off, quickly restoring the filtration capacity. If the flow rate is still lower than the set threshold after vibration, the electronic valve 321 can automatically close the oil inlet pipe 100 to cut off the inflow of the medium. During the replacement process, the connecting plate 323 at the bottom of the filter box 200 can be disengaged from the filter box 200 by rotating the handle 324. When the connecting plate 323 is separated, the filter cylinder 310 that is slidably connected to it is simultaneously taken out. Then, the filter cylinder 310 can be slidably separated from the connecting plate 323 to complete the quick replacement.

[0031] It should be noted that the flow sensor 322 is a flow detection element installed on the surface of the oil outlet pipe 110. Its detection end extends into the inside of the oil outlet pipe 110, and it can measure the flow rate or flow velocity of the filtered medium in real time and output an electrical signal. The flow sensor 322 can be selected from turbine type, Coriolis type, ultrasonic type, electromagnetic type, or other flow detection devices that can work stably in high pressure, high temperature, and oil-containing environments, depending on the working conditions. The sensor body is fixed on the outer wall of the oil outlet pipe 110, and the detection probe or measuring cavity is located inside the pipe, in direct contact with the medium to obtain accurate flow data. The flow sensor 322 is connected to the control module or the control host of oil extraction through wires or bus. When the flow rate is detected to be lower than the set threshold, the control logic is triggered. First, the impact block 325 is driven to vibrate the filter cylinder 310 to shake off impurities. If the flow rate still does not recover, a signal is sent to the electronic valve 321 to automatically close the oil inlet pipe 100.

[0032] It should be noted that the electronic valve 321 is fixedly installed on the surface of the oil inlet pipe 100. It is an electrically controlled valve that controls the opening and closing of the oil inlet pipe 100. It can automatically open or close the medium flowing into the filter box 200 according to the set threshold. The electronic valve 321 can be selected from solenoid valves, proportional regulating valves or high-pressure electric ball valves, etc., which can work stably under the high pressure, high temperature and oil-containing conditions of oil extraction, depending on the operating environment. The valve body is connected to the oil inlet pipe 100 by flange or thread seal. The valve core is made of wear-resistant and corrosion-resistant materials to extend its service life.

[0033] A sealing tube 326 is fixedly installed on the surface of the filter box 200. An electric push rod 327 is fixedly installed on the outside of the sealing tube 326. The output end of the electric push rod 327 is located on one side of the impact block 325.

[0034] In this embodiment, when the control signal triggers, the electric push rod 327 can reciprocate along the inner wall of the sealing tube 326, driving or pushing the impact block 325 to directionally impact or vibrate the filter cartridge 310, thereby achieving rapid loosening and detachment of impurities, and thus restoring its filtration capacity without disassembling the filter cartridge 310.

[0035] The side of the impact block 325 near the filter cylinder 310 is set as an arc surface, and the edge of the arc surface of the filter cylinder 310 is set as a rounded corner.

[0036] In this embodiment, the impact block 325 makes surface contact rather than sharp point contact when it comes into contact with or vibrates the filter cartridge 310, which can evenly distribute the impact force, avoid scratches, deformation or local stress concentration on the surface of the filter cartridge, and reduce vibration noise and wear.

[0037] A connecting pipe 328 is provided on the side of the impact block 325 away from the filter cartridge 310. A moving rod 329 is slidably installed on one end of the connecting pipe 328. The other end of the moving rod 329 is fixedly connected to the impact block 325. A spring 3210 is fixedly installed on one end of the moving rod 329 inside the connecting pipe 328. The other end of the spring 3210 is fixedly connected to the inner wall of the connecting pipe 328.

[0038] In this embodiment, the moving rod 329 can slide back and forth in the connecting pipe 328 under the drive of the electric push rod 327, causing the impact block 325 to impact or vibrate the filter cartridge 310. The spring 3210 provides elastic preload and return force for the moving rod 329, making the impact action more gentle and uniform and able to return quickly after the drive stops, avoiding damage caused by the impact block 325 pressing on the surface of the filter cartridge for a long time.

[0039] A sealing plate 3211 is slidably installed inside the sealing tube 326. One side of the connecting tube 328 is fixedly connected to the sealing plate 3211, and the output end of the electric push rod 327 is fixedly connected to the other side of the sealing plate 3211.

[0040] In this embodiment, the electric push rod 327 can directly push or pull back the sealing plate 3211 during extension and retraction, thereby driving the connecting pipe 328 and the impact block 325 fixedly connected to it to reciprocate, realizing the impact or vibration of the filter cartridge 310. When the sealing plate 3211 slides inside the sealing pipe 326, it always fits against the inner wall, forming a reliable seal and preventing high-pressure oil-containing media and impurities from entering the electric push rod 327 and the interior of the connecting pipe 328.

[0041] like Figure 2 , Figure 3 and Figure 5 As shown, the backflushing assembly 330 includes a discharge pipe 331 fixedly installed on the surface of the oil inlet pipe 100, and a control valve 332 is fixedly installed on the surface of the discharge pipe 331.

[0042] In this embodiment, when backflushing cleaning of the filter cartridge 310 is required, the control valve 332 can be opened to guide the high-pressure liquid or compressed gas to the inside and outside of the filter cartridge 310 through the discharge pipe 331 to form a reverse flow, thereby impacting and peeling off the impurities attached to the filter screen surface and discharging them through the discharge pipe 331, achieving rapid online cleaning. The backflushing component 330 is arranged outside the oil inlet pipe 100 and is normally in a closed state, without changing the normal flow direction of the medium and the filtration conditions.

[0043] The discharge pipe 331 is located at the bottom of the surface of the oil inlet pipe 100, and the discharge pipe 331 is located on the side of the electronic valve 321 near the filter box 200.

[0044] In this embodiment, during the backflushing operation, backflushing liquid can be introduced from the oil outlet pipe 110, and after flowing in the reverse direction to impact and clean the inside and outside of the filter cartridge 310, it enters the oil inlet pipe 100. When the oil inlet pipe 100 is closed, the backflushing liquid can only be discharged through the discharge pipe 331, thereby forming an independent and controlled backflushing path, realizing the directional removal of impurities, and preventing impurities from flowing back and accumulating in the oil inlet pipe 100.

[0045] Working Principle: The medium containing impurities enters the filter box 200 through the inlet pipe 100. After being intercepted by the filter cartridge 310, solid particles are discharged through the outlet pipe 110, achieving preliminary purification of drilling fluid, produced fluid, or injection water. The flow sensor 322 on the surface of the outlet pipe 110 monitors the flow rate after filtration in real time. When a decrease in flow is detected, the control system first drives the electric push rod 327 on the outside of the sealing pipe 326 to reciprocate within the sealing pipe 326. This causes the fixed sealing plate 3211, connecting pipe 328, and impact block 325 to directionally impact or vibrate the filter cartridge 310. The flexible contact between the arc surface of the impact block 325 and the rounded edge of the filter cartridge 310 loosens and dislodges the solid particles adhering to the filter screen surface, quickly restoring filtration capacity and extending the filter cartridge's service life. If the flow rate remains below the set threshold after vibration, the electronic valve 321 automatically closes the inlet pipe 100, cutting off the inflow of medium and creating a safe and clean environment inside the filter box 200. Under pressure, the operator can rotate the bottom connecting plate 323 through handle 324 to disengage it from the filter box 200. When the connecting plate 323 is separated, the filter cylinder 310 that is slidably connected to it is simultaneously pulled out. Then, the filter cylinder 310 can be quickly replaced by sliding it apart from the connecting plate 323. The entire process does not require disassembling the filter box 200. When online cleaning is required, the control valve 332 of the backflushing component 330 on one side of the oil inlet pipe 100 can be opened to introduce backflushing liquid from the oil outlet pipe 110. The backflushing liquid impacts the inside and outside of the filter cylinder 310 through reverse flow. The impact action peels off the attached impurities and discharges them through the discharge pipe 331, forming an independent and controlled backflushing path to prevent impurities from flowing back and accumulating in the oil inlet pipe 100.

[0046] It should be noted that the electronic valves, flow sensors, and electric actuators mentioned above are all devices with relatively mature existing technologies. Specific models can be selected according to actual needs. At the same time, the electronic valves, flow sensors, and electric actuators can be powered by built-in power supplies or by AC power. The specific power supply method should be selected according to the situation, and will not be elaborated here.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A filtration device for oil extraction, characterized in that, include: An oil inlet pipe (100) and an oil outlet pipe (110) are provided. A filter box (200) is fixedly installed at one end of the oil inlet pipe (100). The oil outlet pipe (110) is fixedly connected to the outside of the filter box (200) and is connected to the inside of the filter box (200). A detection filter mechanism (300) for detecting the degree of clogging of filter components is provided on one side of the filter box (200); The detection and filtration mechanism (300) includes a filter cylinder (310) disposed inside the filter box (200), a filter assembly (320) for detecting blockage and quickly replacing the filter cylinder (310) is disposed on the outside of the filter cylinder (310), and a backflushing assembly (330) is disposed on one side of the oil inlet pipe (100).

2. The oil extraction filtration device according to claim 1, characterized in that, The filter assembly (320) includes an electronic valve (321) fixedly installed on the surface of the oil inlet pipe (100), a flow sensor (322) fixedly installed on the surface of the oil outlet pipe (110), and the detection end of the flow sensor (322) extends into the interior of the oil outlet pipe (110). An impact block (325) is provided inside the filter box (200). A connecting plate (323) is threadedly connected to the bottom of the filter box (200). The bottom of the filter cylinder (310) is slidably connected to the connecting plate (323). A handle (324) is fixedly installed on the bottom of the connecting plate (323).

3. The oil extraction filtration device according to claim 2, characterized in that, A sealing tube (326) is fixedly installed on the surface of the filter box (200), and an electric push rod (327) is fixedly installed on the outside of the sealing tube (326). The output end of the electric push rod (327) is located on one side of the impact block (325).

4. The oil extraction filtration device according to claim 3, characterized in that, The side of the impact block (325) near the filter cylinder (310) is set as an arc surface, and the edge of the arc surface of the filter cylinder (310) is set as rounded corners.

5. The oil extraction filtration device according to claim 4, characterized in that, A connecting pipe (328) is provided on the side of the impact block (325) away from the filter cylinder (310). A movable rod (329) is slidably installed on one end of the connecting pipe (328). The other end of the movable rod (329) is fixedly connected to the impact block (325). A spring (3210) is fixedly installed on one end of the movable rod (329) inside the connecting pipe (328). The other end of the spring (3210) is fixedly connected to the inner wall of the connecting pipe (328).

6. The oil extraction filtration device according to claim 5, characterized in that, A sealing plate (3211) is slidably installed inside the sealing tube (326). One side of the connecting tube (328) is fixedly connected to the sealing plate (3211), and the output end of the electric push rod (327) is fixedly connected to the other side of the sealing plate (3211).

7. The oil extraction filtration device according to claim 2, characterized in that, The backflush assembly (330) includes a discharge pipe (331) fixedly installed on the surface of the inlet pipe (100), and a control valve (332) is fixedly installed on the surface of the discharge pipe (331).

8. The oil extraction filtration device according to claim 7, characterized in that, The discharge pipe (331) is located at the bottom of the surface of the oil inlet pipe (100), and the discharge pipe (331) is located on the side of the electronic valve (321) near the filter box (200).

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