Autonomous circulation cleaning device for oil well flowmeter

Abstract

The utility model relates to the technical field of oil well flowmeters, and provides a self-circulation cleaning device for an oil well flowmeter. The device is composed of a flushing fluid structure, a gas blowing and spraying assembly, a recovery structure and a filter box. In the flushing fluid structure, one end of a flushing pipe is connected with a flowmeter, and the other end is connected with a flushing fluid storage tank through a first pump body. In the gas blowing and spraying assembly, a blowing and spraying pipe is connected with a gas storage tank and a flushing pipe, and an electromagnetic valve is matched with a pulse controller to adjust gas flow. In the recycling structure, a first flow guide pipe is connected with a flow meter and a recycling box, and a pressure release valve is arranged on the recycling box. A liquid inlet of the filter box is connected with the recovery box through a second guide pipe and a second pump body, and a liquid outlet is connected with the flushing liquid storage tank through a third guide pipe and a third pump body. Flushing liquid and gas are combined for flushing, the flushing impact force is enhanced through the gas, the flowmeter can be better cleaned, stable and accurate operation of the flowmeter is guaranteed, and the production efficiency of an oil well is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil well flowmeter technical field, more particularly, relate to a kind of oil well flowmeter autonomous circulation cleaning device. BACKGROUND

[0002] Oil well flowmeter as a kind of specially used for accurately measuring oil, gas, water and other multiphase fluid flow in oil well Key instrument equipment, usually be installed on the production pipeline of oil well.It is through using a variety of scientific principles and technical means, such as volumetric measurement principle (such as oval gear flowmeter by gear rotation fluid volume measurement), velocity measurement principle (like turbine flowmeter according to the rotational speed of fluid impact turbine to calculate flow), differential pressure measurement principle (for example, orifice plate flowmeter utilizes the pressure difference generated by fluid flow through throttling device to calculate flow) and mass measurement principle (typical such as Coriolis mass flowmeter according to the relationship between Coriolis force and mass flow measurement) etc., can the flow information of oil well output fluid be converted into electrical signal, pulse signal or other readable and processable signal form, and transmission to relevant data acquisition system and monitoring equipment.It aims at real-time, accurately obtaining the production data of oil well, provides indispensable basic data support for production monitoring, resource assessment, optimization of exploitation scheme and economic benefit accounting etc.in the process of oil exploitation, and then guarantee the efficient, stable and sustainability of oil well production, play a vital role in the whole industry chain of petroleum industry.

[0003] However, oil well flowmeter will gather oil stain inside during use. The attachment of oil stain can change the surface roughness of flowmeter measuring component, affect the normal flow pattern of fluid, and then cause the measurement accuracy to decline, cannot accurately reflect the real production data of oil well, which will mislead oil reservoir evaluation, exploitation scheme formulation etc.In addition, oil stain accumulation can also block the channel and sensing element inside flowmeter, increase the resistance of fluid passing, reduce the response speed and sensitivity of flowmeter, and even can cause the instability or interruption of measurement signal, affect the real-time monitoring of production process.Moreover, long-term accumulated oil stain can be metamorphosed, hardened under high temperature and other specific environments, produce corrosion effect to mechanical parts of flowmeter, shorten the service life of equipment, increase maintenance cost and downtime, seriously affect the normal production operation efficiency and economic benefits of oil well.

[0004] To avoid the influence of oil pollution on the oil well flowmeter, the prior art usually adopts an online flushing mode, specifically, a bypass circulation pipeline is installed beside the oil well flowmeter. In normal production, fluid passes through the oil well flowmeter; when flushing is needed, the inlet and outlet valves of the flowmeter are closed, the bypass circulation pipeline is opened, and flushing fluid is injected into the bypass circulation pipeline for circulation flushing. However, in this flushing mode, the flushing fluid enters the flowmeter under the action of pressure and mainly relies on its own flow to flush dirt. However, in some complex structures and dead angles of the flowmeter, the flow of the flushing fluid may be limited, so that the dirt in these parts is difficult to be completely removed, and there is a problem of uneven flushing. Utility model content

[0005] The utility model discloses a kind of oil well flowmeter self-circulation cleaning devices, to solve the technical problem in the above background art.

[0006] The embodiment of the utility model is implemented as follows:

[0007] The embodiment of the present application provides an oil well flowmeter self-circulation cleaning device, comprising: a flushing liquid structure, including a flushing liquid storage tank and a flushing pipe, one end of the flushing pipe is used to communicate with the oil well flowmeter, the other end extends into the inner cavity of the flushing liquid storage tank and is communicated with a first pump body;A gas blowing assembly, comprising a gas storage tank, a blowing pipe, a solenoid valve and a pulse controller, one end of the blowing pipe is used to communicate with the flushing pipe, the other end communicates with the inner cavity of the gas storage tank, the solenoid valve is arranged on the blowing pipe, for adjusting the flow size of the blowing pipe, the pulse controller is electrically connected with the solenoid valve;A recovery structure, comprising a recovery tank, a first flow guide pipe and a pressure relief valve, one end of the first flow guide pipe is used to communicate with the oil well flowmeter, the other end communicates with the inner cavity of the recovery tank, and the pressure relief valve is arranged in the recovery tank;And a filter tank with a liquid inlet and a liquid outlet, the liquid inlet communicates with the recovery tank through a second flow guide pipe, and the second flow guide pipe in the recovery tank is communicated with a second pump body, the liquid outlet communicates with the flushing liquid storage tank through a third flow guide pipe, and the third flow guide pipe is provided with a third pump body for pumping the filtered liquid in the filter tank into the flushing liquid storage tank.

[0008] Further, based on the foregoing scheme, the flushing liquid storage tank is also communicated with a liquid injection pipe.

[0009] Further, based on the foregoing scheme, the filter tank comprises a containing box, a primary filter screen, a secondary filter screen and a tertiary filter screen, the liquid inlet and the liquid outlet are arranged on the containing box, and the primary filter screen, the secondary filter screen and the tertiary filter screen are sequentially and spacedly arranged along the direction from the liquid inlet to the liquid outlet.

[0010] Further, based on the preceding scheme, a stirring paddle is rotatably arranged inside the accommodating box above the primary filter screen, and the stirring paddle is provided with a driving motor for driving the rotation thereof.

[0011] Further, based on the preceding scheme, a three-way valve is communicated with the end of the flushing pipe away from the flushing liquid storage tank and the end of the first flow guide pipe away from the recovery tank.

[0012] Further, based on the preceding scheme, the recovery tank is provided with a liquid level detector for detecting the liquid level inside the recovery tank.

[0013] Further, based on the preceding scheme, a bearing base plate is further included, and the flushing liquid storage tank, the gas storage tank, the recovery tank and the filter tank are arranged on the bearing base plate.

[0014] Further, based on the preceding scheme, a plurality of bearing strips are sequentially and spacedly arranged on the bottom side of the bearing base plate along the same straight direction, and any two of the bearing strips are parallel.

[0015] Compared with the prior art, the embodiments of the utility model have at least the following advantages or beneficial effects:

[0016] When the oil well flow meter needs to be cleaned, the first pump body pumps the flushing liquid in the flushing liquid storage tank into the oil well flow meter through the flushing pipe. Meanwhile, the pulse controller controls the electromagnetic valve to adjust the flow size of the blow pipe, so that the gas in the gas storage tank enters the flushing pipe through the blow pipe to mix with the flushing liquid, and then the mixture flushes the oil well flow meter. The mixed liquid after flushing flows into the recovery tank through the first flow guide pipe, and the pressure relief valve in the recovery tank can prevent the pressure from being too high. The mixed liquid in the recovery tank enters the filter tank through the second flow guide pipe under the action of the second pump body for filtration, and the filtered liquid is pumped into the flushing liquid storage tank through the third flow guide pipe under the action of the third pump body, so that the flushing liquid is recycled.

[0017] Further, the combined flushing mode of the flushing liquid and the gas has significant advantages compared to the single flushing liquid flushing. In the single flushing liquid flushing, the flushing liquid mainly relies on its own flow to flush the dirt, but the flow of the flushing liquid can be limited at the complex structure and dead angle of the flowmeter, causing the dirt to be difficult to completely remove, and there is a situation of uneven flushing. In the combined flushing of the flushing liquid and the gas, the addition of the gas makes the flushing process more impactful. After the gas enters the flushing pipe through the blowing pipe and mixes with the flushing liquid, on the one hand, the flow rate and turbulence of the mixed fluid are increased, which can better impact each part of the flowmeter, especially the complex structure and dead angle, effectively improving the dirt removal capability; on the other hand, the expansion and compression characteristics of the gas can produce a pulse effect in the flushing process, further enhancing the dirt peeling effect, so that the cleaning is more thorough. At the same time, this combined flushing mode can reduce the amount of flushing liquid used, reduce costs, and realize the recycling of the flushing liquid through the recovery structure and the filter box, which is more environmentally friendly and efficient, ensures the measurement accuracy and stability of the oil well flowmeter, reduces the maintenance cost and downtime of the equipment, and improves the normal production operation efficiency and economic benefits of the oil well. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 is a front view of the oil well flowmeter self-circulating cleaning device according to an embodiment of the present application. Figure 1 ;

[0020] Figure 2 is a front view of the oil well flowmeter self-circulating cleaning device according to an embodiment of the present application. Figure 2 ;

[0021] Figure 3 is a front view of the oil well flowmeter self-circulating cleaning device according to an embodiment of the present application.

[0022] Figure 4 is a front view of the oil well flowmeter self-circulating cleaning device according to an embodiment of the present application. Figure 1

[0023] Figure 5 is a front view of the oil well flowmeter self-circulating cleaning device according to an embodiment of the present application. Figure 3

[0024] ​​Icon: 1-carrying base plate, 2-carrying strip, 3-filtering tank, 4-driving motor, 5-flushing liquid storage tank, 6-flushing pipe, 7-blowing pipe, 8-three-way valve, 9-first flow guide pipe, 10-gas storage tank, 11-recovery tank, 12-pressure relief valve, 13-liquid level detector, 14-solenoid valve, 15-pulse controller, 16-second flow guide pipe, 17-first pump body, 18-third pump body, 19-first filter screen, 20-second filter screen, 21-third filter screen, 22-third flow guide pipe, 23-stirring paddle, 24-liquid injection pipe. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. EMBODIMENT

[0026] Please refer to Figures 1-5 The embodiment of the present application provides an oil well flowmeter self-circulating cleaning device, which comprises a flushing liquid structure, a recovery structure and a filtering tank. The flushing liquid structure comprises a flushing liquid storage tank 5 and a flushing pipe 6. One end of the flushing pipe 6 is used for communicating with the oil well flowmeter, and the other end extends into the inner cavity of the flushing liquid storage tank 5 and is communicated with a first pump body 17. The flushing liquid structure further comprises a gas storage tank 10, a blowing pipe 7, a solenoid valve 14 and a pulse controller 15. One end of the blowing pipe 7 is used for communicating with the flushing pipe 6, and the other end is communicated with the inner cavity of the gas storage tank 10. The solenoid valve 14 is arranged in the blowing pipe 7 and is used for adjusting the flow size of the blowing pipe 7. The pulse controller 15 is electrically connected with the solenoid valve 14. The recovery structure comprises a recovery tank 11, a first flow guide pipe 9 and a pressure relief valve 12. One end of the first flow guide pipe 9 is used for communicating with the oil well flowmeter, and the other end is communicated with the inner cavity of the recovery tank 11. The pressure relief valve 12 is arranged in the recovery tank 11. The filtering tank has a liquid inlet and a liquid outlet. The liquid inlet is communicated with the recovery tank 11 through a second flow guide pipe 16. The second flow guide pipe 16 in the recovery tank 11 is communicated with a second pump body. The liquid outlet is communicated with the flushing liquid storage tank 5 through a third flow guide pipe 22. The third flow guide pipe 22 is provided with a third pump body 18, which is used for pumping the filtered liquid in the filtering tank into the flushing liquid storage tank 5.

[0027] When the self-circulating cleaning device for oil well flow meters is in operation, and cleaning of the flow meter is required, the first pump body 17 pumps the flushing fluid from the flushing fluid storage tank 5 into the flow meter through the flushing pipe 6. Simultaneously, the pulse controller 15 controls the solenoid valve 14 to adjust the flow rate of the blowpipe 7, allowing gas from the gas storage tank 10 to enter the flushing pipe 6 through the blowpipe 7 and mix with the flushing fluid to jointly flush the flow meter. The flushed mixture flows into the recovery tank 11 through the first guide pipe 9, where the pressure relief valve 12 prevents excessive pressure. The mixture in the recovery tank 11, under the action of the second pump body, enters the filter tank 3 through the second guide pipe 16 for filtration. The filtered liquid, under the action of the third pump body 18, is pumped into the flushing fluid storage tank 5 through the third guide pipe 22, achieving the recycling of the flushing fluid. Furthermore, the combined flushing method of flushing fluid and gas has significant advantages over flushing with a single flushing fluid. In single-flushing flushing, the flushing fluid mainly relies on its own flow to wash away dirt. However, in the complex structure and dead corners of the flowmeter, the flow of the flushing fluid may be restricted, making it difficult to completely remove dirt and resulting in uneven flushing. Combining flushing with flushing fluid and gas, however, makes the flushing process more impactful. After the gas enters the flushing pipe 6 through the blowpipe 7 and mixes with the flushing fluid, it increases the velocity and turbulence of the mixed fluid, enabling it to better impact various parts inside the flowmeter, especially complex structures and dead corners, effectively improving the ability to remove dirt. Furthermore, the expansion and compression characteristics of the gas can generate a pulse effect during the flushing process, further enhancing the stripping effect on dirt and making the cleaning more thorough. At the same time, this combined flushing method can reduce the amount of flushing fluid used, lower costs, and achieve flushing fluid recycling through the recovery structure and filter box 3, making it more environmentally friendly and efficient. This ensures the measurement accuracy and stability of the oil well flowmeter, reduces equipment maintenance costs and downtime, and improves the normal production and operation efficiency and economic benefits of the oil well.

[0028] In a preferred embodiment, the flushing fluid storage tank 5 is also connected to an injection pipe 24.

[0029] In the above embodiment, the presence of the injection pipe 24 provides a convenient way to replenish the flushing fluid storage tank 5. When the flushing fluid is consumed due to long-term or high-intensity cleaning operations, the operator can replenish the new flushing fluid in a timely manner through the injection pipe 24 to ensure that the cleaning work can be carried out continuously and stably, and to avoid interrupting the cleaning process due to insufficient flushing fluid. This ensures that the oil well flow meter is always in good working condition and maintains its measurement accuracy and reliability.

[0030] Preferably, the flushing fluid used in this application is crude oil, which will not chemically react with the oil in the oil well or produce precipitation. It can effectively dissolve and remove oil, wax, and other organic dirt from the flow meter.

[0031] As a preferred embodiment, the filter box 3 comprises a containing box body, a first filter screen 19, a second filter screen 20 and a third filter screen 21. The liquid inlet and the liquid outlet are both arranged on the containing box body. The first filter screen 19, the second filter screen 20 and the third filter screen 21 are sequentially and spacedly arranged along the direction from the liquid inlet to the liquid outlet.

[0032] In the above embodiment, the design of the filter box 3 has significant advantages. The first, second and third filter screens 21 sequentially and spacedly arranged in the containing box body form a multiple filtration system. The first filter screen 19 can first intercept larger impurities such as sand and metal debris in the flushing liquid, preventing these large particles from causing blockage to the subsequent filtration link, thereby ensuring the smoothness of the entire filtration process. The second filter screen 20 has smaller mesh size, which can further filter out impurities such as incompletely dissolved oil dirt agglomerates and smaller solid particles, thereby improving the fineness of filtration. The third filter screen 21 can capture even finer impurities, ensuring that the filtered liquid flowing into the flushing liquid storage tank 5 meets a higher cleanliness standard, thereby effectively avoiding secondary pollution. This progressive filtration structure enables the flushing liquid to maintain a good cleaning state during the recycling process, thereby prolonging the service life of the flushing liquid, reducing the replacement frequency of the flushing liquid, reducing costs, and ensuring the continuous and stable flushing effect of the oil well flowmeter, thereby improving the overall reliability and practicality of the device and providing a strong guarantee for the efficient and stable operation of the oil well flowmeter.

[0033] As a preferred embodiment, a stirring paddle 23 is rotatably arranged inside the containing box body above the first filter screen 19. The stirring paddle 23 is provided with a driving motor 4 for driving rotation thereof.

[0034] In the above embodiment, the stirring action helps to better disperse the oil dirt and other impurities in the recovered liquid, so that they can be more effectively filtered layer by layer when passing through the second and third filter screens 21, thereby improving the removal capacity of the entire filtration system for impurities of different particle sizes and further ensuring the purity of the filtered flushing liquid. This provides high-quality flushing liquid for the recycling cleaning of the oil well flowmeter, thereby ensuring the measurement accuracy and stability of the flowmeter, reducing the flowmeter failure and maintenance costs caused by unclean flushing liquid, and enhancing the reliability and durability of the entire self-circulating cleaning device in actual application.

[0035] As a preferred embodiment, a three-way valve 8 is connected to the end of the flushing pipe 6 away from the flushing liquid storage tank 5 and the end of the first flow guide pipe 9 away from the recovery box 11.

[0036] In the above embodiment, the three-way valve 8 is used to establish the communication between the crude oil pipe and the oil well flowmeter and the flushing pipe 6 or the first flow guide pipe 9. Such design facilitates the oil well output oil conveying operation or the oil well flowmeter flushing operation under different working requirements, so that the whole system can be flexibly switched between the crude oil conveying and the flowmeter cleaning functions, improving the multifunctionality and practicality of the equipment, and providing a strong guarantee for the stable operation in the oil exploitation and production process.

[0037] As a more preferred embodiment, the recycling tank 11 is provided with a liquid level detector 13 for detecting the liquid level inside.

[0038] In the above embodiment, the liquid level detector 13 can monitor the change of the liquid level in the recycling tank 11 in real time and accurately, providing accurate liquid level information for the operator. This helps to reasonably arrange the cleaning operation time and frequency. When the liquid level approaches or reaches the set high threshold, the operator can start the subsequent filtration and flushing liquid circulation process in time, avoid waste liquid leakage due to the overflow of the recycling tank 11, effectively protect the environment, and prevent the normal operation and service life of the recycling tank 11 from being affected due to too much waste liquid accumulation.

[0039] As a more preferred embodiment, a bearing base plate 1 is further included, and the flushing liquid storage tank 5, the gas storage tank 10, the recycling tank 11 and the filter tank 3 are all arranged on the bearing base plate 1.

[0040] In the above embodiment, the bearing base plate 1 provides a unified, stable and centralized mounting platform for each component, making the structure of the whole device more compact and regular, facilitating the arrangement and installation on the oil well site, effectively saving space, and also facilitating the daily inspection, maintenance and management of each component, reducing the time and energy consumption of the staff running back and forth between different components. Secondly, the bearing base plate 1 can enhance the integrity and stability of the whole device. In the complex environment of the oil well production site, such as possible vibration, impact and uneven ground, it can effectively buffer and disperse the influence of these adverse factors on each component, avoid equipment damage, pipe rupture and connection loosening caused by component displacement, shaking or mutual collision, and thus ensure the normal operation of the device.

[0041] As a more preferred embodiment, the bottom side of the bearing base plate 1 is provided with a plurality of bearing strips 2 along the same linear direction in sequence, and any two of the bearing strips 2 are parallel.

[0042] In the above embodiment, the interval arrangement of the bearing strips 2 can effectively disperse the pressure borne by the bearing bottom plate 1, avoid the pressure concentration in a certain point or area, reduce the local compression to the placement plane, prevent the placement plane from being concave, deformed or damaged due to excessive local stress, and is especially suitable for being placed on some not solid and flat ground, thereby ensuring the stability of the entire device during operation.

[0043] In addition, unless specifically defined otherwise or limited otherwise in the embodiments described herein, the terms "mount", "connect" are used broadly and encompass both removable connections and permanent connections, and can further include connections formed through intermediaries. Unless otherwise specifically defined or limited, the terms "upper", "lower", "left", "right", "inside", "outside", "side", and the like, when used in the embodiments described herein, are used for clarity and illustration only and are not meant to limit or imply relative or specific orientations of the device or elements thereof, or to imply or infer any specific spatial or temporal structure or organization of the device or elements thereof. The terms "first", "second", and the like, do not denote any absolute or chronological importance, but are used to distinguish one element from another. The term "plurality" means at least two. In the embodiments described herein, the relative positional relationship limitations such as parallel, perpendicular, aligned, and the like, are relative to the current process level, and are not strictly limited, and a small amount of deviation is allowed, such as approximately parallel, approximately perpendicular, approximately aligned, and the like. For example, A is parallel to B, which means that A is parallel to B or approximately parallel to B, and the included angle between A and B is between 0 degrees and 10 degrees.

[0044] The above is only some embodiments and implementations of the present application, and the protection scope of the present application is not limited thereto. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other, and any combination of features in different embodiments is also within the protection scope of the present application. Any changes or replacements within the technical scope disclosed in the present application can be easily thought by any person skilled in the art, and should be covered within the protection scope of the present application.

Claims

1. An autonomous circulating cleaning device for oil well flow meters, characterized in that, The utility model relates to an oil well flowmeter flushing device, comprising: a flushing liquid structure, including a flushing liquid storage tank (5) and a flushing pipe (6), one end of the flushing pipe (6) is used for communicating with the oil well flowmeter, the other end extends into the inner cavity of the flushing liquid storage tank (5) and is communicated with a first pump body (17); a gas blowing assembly, including a gas storage tank (10), a blowing pipe (7), a solenoid valve (14) and a pulse controller (15), one end of the blowing pipe (7) is used for communicating with the flushing pipe (6), the other end is communicated with the inner cavity of the gas storage tank (10), the solenoid valve (14) is arranged in the blowing pipe (7) and is used for adjusting the flow size of the blowing pipe (7), and the pulse controller (15) is electrically connected with the solenoid valve (14); a recovery structure, including a recovery tank (11), a first flow guide pipe (9) and a pressure relief valve (12), one end of the first flow guide pipe (9) is used for communicating with the oil well flowmeter, the other end is communicated with the inner cavity of the recovery tank (11), and the pressure relief valve (12) is arranged in the recovery tank (11); and a filter tank (3) with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the recovery tank (11) through a second flow guide pipe (16), the second flow guide pipe (16) in the recovery tank (11) is communicated with a second pump body, and the liquid outlet is communicated with the flushing liquid storage tank (5) through a third flow guide pipe (22), and the third flow guide pipe (22) is provided with a third pump body (18) and is used for pumping filtered liquid in the filter tank (3) into the flushing liquid storage tank (5).

2. An autonomous circulating cleaning device for an oil well flow meter according to claim 1, characterized in that, The flushing liquid storage tank (5) is also communicated with a liquid injection pipe (24).

3. An autonomous circulating cleaning device for oil well flow meters according to claim 1, characterized in that, The filter tank (3) includes a containing box body, a first filter screen (19), a second filter screen (20) and a third filter screen (21), the liquid inlet and the liquid outlet are arranged in the containing box body, and the first filter screen (19), the second filter screen (20) and the third filter screen (21) are sequentially and spacedly arranged along the direction from the liquid inlet to the liquid outlet.

4. An autonomous circulating cleaning device for an oil well flow meter according to claim 3, characterized in that, A stirring paddle (23) is rotatably arranged in the containing box body above the first filter screen (19), and the stirring paddle (23) is provided with a driving motor (4) for driving the stirring paddle (23) to rotate.

5. An autonomous circulating cleaning device for an oil well flow meter according to claim 4, characterized in that, The flushing pipe (6) is communicated with a three-way valve (8) at the end away from the flushing liquid storage tank (5), and the first flow guide pipe (9) is communicated with a three-way valve (8) at the end away from the recovery tank (11).

6. An autonomous circulating cleaning device for oil well flow meters according to claim 1, characterized in that, The recovery tank (11) is provided with a liquid level detector (13) for detecting the liquid level in the recovery tank (11).

7. An autonomous circulating cleaning device for oil well flow meters according to claim 1, characterized in that, The utility model further comprises a bearing base plate (1), and the flushing liquid storage tank (5), the gas storage tank (10), the recovery tank (11) and the filter tank (3) are arranged on the bearing base plate (1).

8. An autonomous circulating cleaning device for an oil well flow meter according to claim 7, characterized in that, A plurality of bearing strips (2) are sequentially and spacedly arranged on the bottom side of the bearing base plate (1) along the same straight line direction, and any two bearing strips (2) are parallel.

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