Flowmeter cleaning device

Abstract

The present application discloses a flowmeter cleaning device, belonging to the technical field of oilfield water injection. The flowmeter cleaning device provided in the embodiment of the present application is arranged between the water injection pipeline and the flowmeter. In this device, the filtering inner barrel is located inside the filtering outer barrel, and one end of the filtering inner barrel is communicated with the flowmeter through an output pipe section, and the other end is provided with a detachable joint. Based on the above structure, when cleaning the flowmeter, it is only necessary to remove the filtering inner barrel through the detachable joint, and then the flowmeter can be cleaned through the filtering outer barrel. In this way, there is no need to disassemble and install the flowmeter, reducing the cleaning operation time and the labor intensity, thereby improving the cleaning efficiency.

Description

Technical Field

[0001] This application relates to the technical field of oilfield water injection. In particular, it relates to a flowmeter cleaning device. Background Art

[0002] During the oilfield development process, water is generally injected into the oilfield through injection wells to maintain the reservoir pressure and provide a strong driving force for the reservoir, thereby increasing the oil production. Among them, when injecting water into the injection well, the amount of injected water is mainly measured by a flowmeter installed on the injection pipeline. However, the water injected into the oilfield is generally sewage, which contains impurities. Flowing through the flowmeter for a long time will cause the flowmeter to be blocked or the flowmeter probe to be contaminated. In this case, the flowmeter needs to be cleaned.

[0003] In the related art, when cleaning the flowmeter, it is necessary to first stop the water injection operation, then disassemble the flowmeter for cleaning, and then install the cleaned flowmeter back on the injection pipeline.

[0004] However, in the related art, the flowmeter needs to be disassembled for cleaning and reinstalled after cleaning. Therefore, the operation time for cleaning the flowmeter is long and the labor intensity is high, resulting in low cleaning efficiency. Summary of the Invention

[0005] The embodiments of this application provide a flowmeter cleaning device, which can improve the cleaning efficiency of the flowmeter. The specific technical solutions are as follows:

[0006] The embodiments of this application provide a flowmeter cleaning device, which includes: an input pipe section, a filtering outer barrel, a filtering inner barrel, an output pipe section, and a drain valve;

[0007] The filtering inner barrel is located inside the filtering outer barrel;

[0008] The first end of the input pipe section is connected to the injection pipeline through a control valve, the second end of the input pipe section is connected to the first end of the filtering outer barrel, and the second end of the filtering outer barrel is detachably connected to the drain valve through a plug;

[0009] The first end of the output pipe section passes through the third end of the filtering outer barrel and is detachably connected to the first end of the filtering inner barrel;

[0010] The second end of the filtering inner barrel is provided with a detachable joint, and the second end of the output pipe section is connected to the flowmeter;

[0011] When injecting water through the injection pipeline, the drain valve is in a closed state;

[0012] When cleaning the flowmeter, the drain valve is in an open state. The pipe plug is used to disassemble the drain valve and separate the drain valve from the outer filter barrel; the detachable joint is used to disassemble the inner filter barrel and separate the inner filter barrel from the output pipe section after the drain valve is separated from the inner filter barrel; the outer filter barrel is used to provide a channel for cleaning the flowmeter.

[0013] In a possible implementation, an external thread is provided at the first end of the output pipe section, and an internal thread is provided at the first end of the inner filter barrel;

[0014] The first end of the output pipe section is communicated with the first end of the inner filter barrel through the external thread and the internal thread.

[0015] In another possible implementation, a round hole is provided on the side wall of the third end of the outer filter barrel;

[0016] The center of the round hole is located above the center line of the outer filter barrel;

[0017] The first end of the output pipe section passes through the round hole and is communicated with the first end of the inner filter barrel.

[0018] In another possible implementation, the contact portion between the output pipe section and the third end of the outer filter barrel is fixedly connected;

[0019] The contact portion between the second end of the input pipe section and the first end of the outer filter barrel is fixedly connected.

[0020] In another possible implementation, the center line of the output pipe section and the center line of the inner filter barrel are on the same straight line.

[0021] In another possible implementation, the center line of the outer filter barrel is parallel to the center line of the output pipe section, and the center line of the output pipe section is located above the center line of the outer filter barrel.

[0022] In another possible implementation, the second end of the output pipe section is communicated with the flowmeter through a slip joint; or,

[0023] The second end of the output pipe section is communicated with the flowmeter through a flange.

[0024] In another possible implementation, the input pipe section is perpendicular to the outer filter barrel, and the input pipe section is located below the outer filter barrel.

[0025] In another possible implementation, the pipe plug is provided with a reducing hole;

[0026] The second end of the filtering outer barrel is threadedly connected to the first end of the reducing hole of the plug, and the second end of the reducing hole of the plug is threadedly connected to the drain valve.

[0027] In another possible implementation, the diameter of the filtering inner barrel is greater than the diameter of the output pipe section.

[0028] The beneficial effects brought by the technical solution provided by the embodiment of the present application are:

[0029] The flowmeter cleaning device provided by the embodiment of the present application is arranged between the injection water pipeline and the flowmeter. In this device, the filtering inner barrel is located inside the filtering outer barrel, and one end of the filtering inner barrel is communicated with the flowmeter through the output pipe section, and the other end is provided with a detachable joint. Based on the above structure, when cleaning the flowmeter, only need to remove the filtering inner barrel through the detachable joint, and then pass through the filtering outer barrel to clean the flowmeter. In this way, it is not necessary to disassemble and install the flowmeter, reducing the cleaning operation time and labor intensity, thereby improving the cleaning efficiency. Description of the Drawings

[0030] Figure 1 is a schematic diagram of a flowmeter cleaning device provided by an embodiment of the present application.

[0031] The reference numerals respectively represent:

[0032] 1 - input pipe section, 2 - filtering outer barrel, 3 - filtering inner barrel, 4 - output pipe section, 5 - drain valve, 6 - plug. Detailed Embodiments

[0033] To make the technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below.

[0034] During the oilfield development process, water injection is a necessary link. In order to effectively control and measure the amount of water input into each injection well, a flowmeter is generally installed on the injection water pipeline to measure the water flow through this flowmeter. However, since the water injected into the well is basically oilfield sewage, the situation where the flowmeter is blocked or the flowmeter probe is contaminated often occurs, resulting in only hearing the sound of water but not seeing the water flow, and it is impossible to accurately inject water into the well. At this time, it is necessary to disassemble the flowmeter and clean the flowmeter. Currently, when cleaning the flowmeter, it is necessary to first stop the water injection operation, disassemble the flowmeter for cleaning, and then install the cleaned flowmeter back on the injection water pipeline. It can be seen that the current cleaning operation time of the flowmeter is long and the labor intensity is high, resulting in low cleaning efficiency.

[0035] The embodiment of the present application provides a flowmeter cleaning device, see Figure 1, the device includes: an input pipe section 1, a filtering outer barrel 2, a filtering inner barrel 3, an output pipe section 4, and a drain valve 5;

[0036] The filtering inner barrel 3 is located inside the filtering outer barrel 2;

[0037] The first end of the input pipe section 1 is connected to the water injection pipeline through a control valve, the second end of the input pipe section 1 is connected to the first end of the filtering outer barrel 2, and the second end of the filtering outer barrel 2 is detachably connected to the drain valve 5 through a plug 6;

[0038] The first end of the output pipe section 4 passes through the third end of the filtering outer barrel 2 and is detachably connected to the first end of the filtering inner barrel 3;

[0039] The second end of the filtering inner barrel 3 is provided with a detachable joint, and the second end of the output pipe section 4 is connected to a flowmeter;

[0040] When injecting water through the water injection pipeline, the drain valve 5 is in a closed state;

[0041] When cleaning the flowmeter, the drain valve 5 is in an open state. The plug 6 is used to disassemble the drain valve 5 and separate the drain valve 5 from the filtering outer barrel 2; the detachable joint is used to disassemble the filtering inner barrel 3 and separate the filtering inner barrel 3 from the output pipe section 4 after the drain valve 5 is separated from the filtering inner barrel 3; the filtering outer barrel 2 is used to provide a channel for cleaning the flowmeter.

[0042] When injecting water through the water injection pipeline, open the control valve and close the drain valve 5. The water flows through the input pipeline, the filtering outer barrel 2, the filtering inner barrel 3, the output pipeline, the flowmeter in sequence, and finally enters the oil layer.

[0043] The flowmeter cleaning device provided by the embodiment of the present application is arranged between the water injection pipeline and the flowmeter. In this device, the filtering inner barrel 3 is located inside the filtering outer barrel 2, and one end of the filtering inner barrel 3 is connected to the flowmeter through the output pipe section 4, and the other end is provided with a detachable joint. Based on the above structure, when cleaning the flowmeter, only need to remove the filtering inner barrel 3 through the detachable joint, and then pass through the filtering outer barrel 2 to clean the flowmeter. In this way, there is no need to disassemble and install the flowmeter, reducing the cleaning operation time and the labor intensity, thereby improving the cleaning efficiency.

[0044] Introduction of the output pipe section 4: In a possible implementation manner, the first end of the output pipe section 4 and the first end of the filtering inner barrel 3 can be connected by screw threads. In this implementation manner, it is not specifically limited whether to set internal screw threads or external screw threads at the first end of the output pipe section 4.

[0045] In a possible implementation manner, the first end of the output pipe section 4 is provided with external screw threads, and the first end of the filtering inner barrel 3 is provided with internal screw threads;

[0046] The first end of the output pipe section 4 is communicated with the first end of the inner filtering barrel 3 through external and internal screw threads.

[0047] In another possible implementation, the first end of the output pipe section 4 can also be provided with internal screw threads, and the first end of the inner filtering barrel 3 is provided with external screw threads. The first end of the output pipe section 4 is communicated with the first end of the inner filtering barrel 3 through external and internal screw threads.

[0048] In this implementation, the output pipe section 4 and the inner filtering barrel 3 are connected by screw threads, and a detachable joint is provided at the other end of the inner filtering barrel 3. Therefore, when cleaning the flowmeter, the inner filtering barrel 3 can be detached from the output pipe section 4 by removing the detachable joint, and then the flowmeter can be cleaned through the outer filtering barrel 2 subsequently.

[0049] In one possible implementation, the detachable interface can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the detachable interface can be a wrench opening. Among them, the shape of the wrench opening can be set and changed as needed. For example, the shape of the wrench opening can be hexagonal or other shapes.

[0050] In another possible implementation, the first end of the output pipe section 4 and the first end of the inner filtering barrel 3 can also be connected by other detachable connection methods. In the embodiments of the present application, no specific limitation is made thereto. For example, the first end of the output pipe section 4 and the first end of the inner filtering barrel 3 can be connected by screw threads. When the first end of the output pipe section 4 and the first end of the inner filtering barrel 3 are connected by screw threads, the first end of the output pipe section 4 can be provided with external threads, and the first end of the inner filtering barrel 3 can be provided with internal threads; or, the first end of the output pipe section 4 is provided with internal threads, and the first end of the inner filtering barrel 3 is provided with external threads. In the embodiments of the present application, no specific limitation is made on whether the first end of the output pipe section 4 is provided with internal or external threads.

[0051] In one possible implementation, the second end of the output pipe section 4 is communicated with the flowmeter through a slip joint; or,

[0052] the second end of the output pipe section 4 is communicated with the flowmeter through a flange.

[0053] In the embodiments of the present application, no specific limitation is made on the communication method between the second end of the output pipe section 4 and the flowmeter. Among them, when the communication method is slip joint connection, the second end of the output pipe section 4 and the flowmeter can be fixed through a joint, and the joint can be a nipple; when the communication method is flange connection, the second end of the output pipe section 4 and the flowmeter can be fixed through bolts.

[0054] In a possible implementation, the type of the flowmeter can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. In the embodiments of the present application, the connection mode between the flowmeter and the second end of the output pipe section 4 can be adjusted according to the type of the flowmeter.

[0055] In a possible implementation, the length of the output pipe section 4 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto.

[0056] In a possible implementation, the material of the output pipe section 4 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the material of the output pipe section 4 is cast iron or alloy, and the alloy can be stainless steel.

[0057] In a possible implementation, the diameter of the output pipe section 4 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the diameter of the output pipe section 4 can be 100 mm or 120 mm.

[0058] Introduction of the input pipe section 1: In a possible implementation, the connection mode between the second end of the input pipe section 1 and the first end of the filter outer barrel 2 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the connection mode can be a fixed connection, and the fixed connection can be welding.

[0059] In a possible implementation, the input pipe section 1 and the filter outer barrel 2 are at a certain angle, and the input pipe section 1 is located below the filter outer barrel 2.

[0060] In this implementation, no specific limitation is made to the angle between the input pipe section 1 and the filter outer barrel 2. For example, the angle is 90°, that is, the input pipe section 1 is perpendicular to the filter outer barrel 2. Continue to refer to Figure 1 .

[0061] In the embodiments of the present application, the input pipe section 1 is perpendicular to the filter outer barrel 2. When water is injected through the water injection pipeline and the water flows through the input pipe section 1, the water flow direction is vertically upward. In this way, large particulate impurities or other impurities in the water will settle under the action of gravity, avoiding entering the flowmeter with the water flow, and reducing the occurrence of flowmeter blockage or contamination of the flowmeter probe to a certain extent.

[0062] In a possible implementation, the length of the input pipe section 1 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto.

[0063] In a possible implementation, the material of the input pipe section 1 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the material of the input pipe section 1 is cast iron or alloy, and the alloy can be stainless steel.

[0064] In a possible implementation, the diameter of the input pipe section 1 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the diameter of the input pipe section 1 can be 100 mm or 120 mm.

[0065] Among them, the diameter of the input pipe section 1 and the diameter of the output pipe section 4 can be the same or different. In the embodiments of the present application, no specific limitation is made thereto.

[0066] In a possible implementation, due to the existence of the oil layer pressure, the water injection operation is generally a pressurized operation. This poses requirements on the pressure-bearing capacity of the output pipe section 4 and the pressure-bearing capacity of the input pipe section 1. In the embodiments of the present application, the pressure-bearing capacity of the output pipe section 4 and the pressure-bearing capacity of the input pipe section 1 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the pressure-bearing capacity of the output pipe section 4 is greater than 10 Mpa, and the pressure-bearing capacity of the input pipe section 1 is greater than 10 Mpa.

[0067] It should be noted that since the injected water is generally oilfield sewage, which may contain corrosive substances and is likely to corrode the pipeline, therefore, the input pipe section 1 and the output pipe section 4 can also be subjected to anti-corrosion treatment. In the embodiments of the present application, no specific limitation is made to the specific method of anti-corrosion treatment.

[0068] Introduction of the drain valve 5: In a possible implementation, the type of the drain valve 5 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the drain valve 5 can be an automatic drain valve 5 or a mechanical drain valve 5.

[0069] Introduction of the filter outer barrel 2: In the embodiments of the present application, the filter outer barrel 2 is used to provide a channel for cleaning the flowmeter. When cleaning the flowmeter, after removing the plug 6 and the filter inner barrel 3, relevant personnel can directly clean the flowmeter through the filter outer barrel 2 without disassembling the flowmeter, improving the cleaning efficiency.

[0070] In a possible implementation, a round hole is provided on the side wall of the third end of the filter outer barrel 2;

[0071] The center of the round hole is located above the center line of the filter outer barrel 2;

[0072] The first end of the output pipe section 4 passes through the round hole and is communicated with the first end of the filter inner barrel 3.

[0073] In this implementation, the center of the round hole is located above the center line of the outer filter barrel 2. During the water injection process, large particulate impurities in the water and welding slag residues can settle to the bottom of the outer filter barrel 2 under the action of gravity, without entering the output pipe section 4 with the water flow, thereby reducing the occurrence of flowmeter blockage and flowmeter contamination to a certain extent.

[0074] Among them, the diameter of the round hole can be set and changed as needed. In the embodiments of this application, no specific limitation is made in this regard. However, it should be noted that the diameter of the round hole is larger than the diameter of the output pipe section 4. For example, if the diameter of the output pipe section 4 is 100 mm, the diameter of the round hole can be 110 mm or 120 mm.

[0075] In a possible implementation, the output pipe section 4 is fixedly connected to the contact part of the third end of the outer filter barrel 2;

[0076] The second end of the input pipe section 1 is fixedly connected to the contact part of the first end of the outer filter barrel 2.

[0077] In this implementation, the fixed connection of the output pipe section 4 to the contact part of the third end of the outer filter barrel 2 can make the water flow stable, avoiding the output pipe section 4 moving back and forth when the water flow is large, which affects the measurement of the flowmeter.

[0078] Among them, the fixed connection method can be set and changed as needed. In the embodiments of this application, no specific limitation is made in this regard. For example, the fixed connection method can be welding, that is, the contact part of the output pipe section 4 and the third end of the outer filter barrel 2 is welded, and the contact part of the second end of the input pipe section 1 and the first end of the outer filter barrel 2 is welded.

[0079] In a possible implementation, the second end of the outer filter barrel 2 is detachably communicated with the drain valve 5 through a plug 6.

[0080] In this implementation, the plug 6 has a reducing hole; the second end of the outer filter barrel 2 is threadedly connected to the first end of the reducing hole of the plug 6, and the second end of the reducing hole of the plug 6 is threadedly connected to the drain valve 5.

[0081] In the embodiments of this application, the inner filter barrel 3 is located inside the outer filter barrel 2, and one end of the inner filter barrel 3 is communicated with the flowmeter through the output pipe section 4, and the other end is provided with a detachable joint. Based on the above structure, when cleaning the flowmeter, only need to remove the drain valve 5 through the plug 6, then remove the inner filter barrel 3 through the detachable joint, and then pass through the outer filter barrel 2 to clean the flowmeter, so there is no need to disassemble and install the flowmeter, reducing the cleaning operation time and labor intensity, thereby improving the cleaning efficiency.

[0082] After the cleaning operation is completed, simply align the inner filter barrel 3 with the output pipe section 4, connect the two through a detachable joint, then connect the drain valve 5 to the outer filter barrel 2 through a plug 6, close the drain valve 5, and continue to inject water into the oil layer.

[0083] In a possible implementation, the center line of the outer filter barrel 2 is parallel to the center line of the output pipe section 4, and the center line of the output pipe section 4 is located above the center line of the outer filter barrel 2.

[0084] In this implementation, since the center line of the output pipe section 4 is located above the center line of the outer filter barrel 2, when water enters the outer filter barrel 2, large particulate impurities in the water or welding slag during welding will sink to the bottom of the outer filter barrel 2 under the action of gravity and will not enter the output pipe section 4 with the water flow. Thus, to a certain extent, the occurrence of flowmeter blockage and flowmeter contamination can be reduced.

[0085] Among them, the welding slag can be the welding slag at the contact between the output pipe section 4 and the third end of the outer filter barrel 2, or the welding slag at the contact between the second end of the input pipe section 1 and the first end of the outer filter barrel 2. In the embodiments of the present application, no specific limitation is made thereto.

[0086] In a possible implementation, the length of the outer filter barrel 2 can be set and changed as needed, and the length of the inner filter barrel 3 can also be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. However, it should be noted that the length of the inner filter barrel 3 is less than the length of the outer filter barrel 2.

[0087] In a possible implementation, the material of the outer filter barrel 2 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the material of the outer filter barrel 2 can be cast iron or alloy, and the alloy can be stainless steel.

[0088] In a possible implementation, the shape of the outer filter barrel 2 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the shape of the outer filter barrel 2 is cylindrical or conical.

[0089] Introduction of the inner filter barrel 3: In the embodiments of the present application, the inner filter barrel 3 is connected to the output pipe section 4, can filter large particulate impurities in the water and welding slag during welding, and reduces the occurrence of flowmeter failures to a certain extent.

[0090] In a possible implementation, the filtration particle size of the inner filter barrel 3 can be set and changed as needed. In the embodiments of the present application, no specific limitation is made thereto. For example, the filtration particle size can be 60 mesh, 100 mesh.

[0091] In a possible implementation, the inner filtering bucket 3 and the outer filtering bucket 2 can be cleaned regularly or irregularly to timely remove the pollutants and large particulate impurities in the outer filtering bucket 2, thereby reducing the occurrence of the flowmeter blockage or the contamination of the flowmeter probe to a certain extent.

[0092] In a possible implementation, the material of the inner filtering bucket 3 can be set as required. In the embodiments of the present application, no specific limitation is made thereto. For example, the material of the inner filtering bucket 3 can be cast iron or alloy, and the alloy can be stainless steel.

[0093] Wherein, the material of the outer filtering bucket 2 and the material of the inner filtering bucket 3 can be the same or different. In the embodiments of the present application, no specific limitation is made thereto. For example, the materials of the outer filtering bucket 2 and the inner filtering bucket 3 are the same, both being stainless steel.

[0094] In a possible implementation, the shape of the inner filtering bucket 3 can be set and changed as required. In the embodiments of the present application, no specific limitation is made thereto. For example, the shape of the inner filtering bucket 3 is cylindrical or conical.

[0095] Wherein, the shape of the inner filtering bucket 3 and the shape of the outer filtering bucket 2 can be the same or different. In the embodiments of the present application, no specific limitation is made thereto. For example, the shapes of the inner filtering bucket 3 and the outer filtering bucket 2 are the same, both being cylindrical.

[0096] In a possible implementation, the center line of the output pipe section 4 is on the same straight line as the center line of the inner filtering bucket 3.

[0097] In this implementation, the concentric arrangement of the center line of the output pipe section 4 and the center line of the inner filtering bucket 3 can make the water flow stable, facilitating the accurate measurement of the water flow by the flowmeter.

[0098] In a possible implementation, the diameter of the inner filtering bucket 3 is larger than the diameter of the output pipe section 4. Wherein, the diameter size of the inner filtering bucket 3 can be set and changed as required, and the diameter size of the output pipe section 4 can also be set and changed as required. In the embodiments of the present application, no specific limitation is made thereto. For example, the diameter of the inner filtering bucket 3 is 90 mm, and the diameter of the output pipe section 4 is 80 mm.

[0099] The flowmeter cleaning device provided by the embodiment of the present application is arranged between the water injection pipeline and the flowmeter. In this device, the inner filtering barrel 3 is located inside the outer filtering barrel 2. One end of the inner filtering barrel 3 is communicated with the flowmeter through the output pipe section 4, and the other end is provided with a detachable joint. Based on the above structure, when cleaning the flowmeter, only need to remove the drain valve 5 through the plug 6, then remove the inner filtering barrel 3 through the detachable joint, and then pass through the outer filtering barrel 2 to clean the flowmeter. In this way, there is no need to disassemble and install the flowmeter, reducing the cleaning operation time and labor intensity, thereby improving the cleaning efficiency.

[0100] Moreover, due to its simple and reliable cleaning operation method, the cleaning is more timely, and it maximally eliminates the situation of only hearing the water sound but not seeing the flow caused by the blockage of the flowmeter, providing guarantee for the accurate water injection and precise water injection in the oilfield.

[0101] In addition, installing the flowmeter cleaning device between the flowmeter and the water injection pipeline can also filter impurities in the sewage, effectively solving the influence of poor injected water quality on the measurement of water flow by the flowmeter, greatly reducing the occurrence of flowmeter failures, reducing the failure rate of flowmeter blockage, reducing the labor intensity to a certain extent, and at the same time reducing the requirement of the flowmeter for water quality.

[0102] Furthermore, installing the flowmeter cleaning device between the water injection pipeline and the flowmeter can also simplify the welding process of the wellhead process. The original process is to weld a straight pipe section on an elbow, and weld a joint connected to the control valve under this straight pipe section. First, weld a straight pipe section at the horizontal end of the elbow, weld a reducing fitting at the other end of the straight pipe section, and weld a straight pipe section with a connector connected to the flowmeter at one end at the other end of the reducing fitting. It can be seen that this welding process is cumbersome. Now these processes and devices are all replaced by the flowmeter cleaning device provided by the embodiment of the present application, reducing the welding labor intensity to a certain extent.

[0103] The above description is only for the convenience of those skilled in the art to understand the technical solution of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flowmeter cleaning device, characterized in that, the device includes: an input pipe section, a filter outer barrel, a filter inner barrel, an output pipe section and a drain valve; the filter inner barrel is located inside the filter outer barrel; the first end of the input pipe section is connected to the water injection pipeline through a control valve, the second end of the input pipe section is connected to the first end of the filter outer barrel, and the second end of the filter outer barrel is detachably connected to the drain valve through a nipple; the first end of the output pipe section passes through the third end of the filter outer barrel and is detachably connected to the first end of the filter inner barrel; a detachable joint is provided at the second end of the filter inner barrel, and the second end of the output pipe section is connected to the flowmeter; the input pipe section and the output pipe section are pipelines treated with anti-corrosion; when injecting water through the water injection pipeline, the control valve is opened, the drain valve is in a closed state, and the water flows through the input pipeline, the filter outer barrel, the filter inner barrel, the output pipeline and the flowmeter in sequence and enters the oil layer; when cleaning the flowmeter, the drain valve is in an open state, and the nipple, which is used to disassemble the drain valve, separates the drain valve from the filter outer barrel; the detachable joint, which is used to disassemble the filter inner barrel after the drain valve is separated from the filter inner barrel, separates the filter inner barrel from the output pipe section; the filter outer barrel is used to provide a channel for cleaning the flowmeter.

2. The device according to claim 1, characterized in that, the first end of the output pipe section is provided with an external thread, and the first end of the filter inner barrel is provided with an internal thread; the first end of the output pipe section is connected to the first end of the filter inner barrel through the external thread and the internal thread.

3. The device according to claim 1, characterized in that, a round hole is provided on the side wall of the third end of the filter outer barrel; the center of the round hole is located above the center line of the filter outer barrel; the first end of the output pipe section passes through the round hole and is connected to the first end of the filter inner barrel.

4. The device according to claim 3, characterized in that, the contact part between the output pipe section and the third end of the filter outer barrel is fixedly connected; the contact part between the second end of the input pipe section and the first end of the filter outer barrel is fixedly connected.

5. The device according to claim 1, characterized in that, the center line of the output pipe section and the center line of the filter inner barrel are on the same straight line.

6. The device according to claim 5, characterized in that, the center line of the filter outer barrel is parallel to the center line of the output pipe section, and the center line of the output pipe section is located above the center line of the filter outer barrel.

7. The device according to claim 1, characterized in that, the second end of the output pipe section is connected to the flowmeter through a slip joint; or, the second end of the output pipe section is connected to the flowmeter through a flange.

8. The device according to claim 1, characterized in that, the input pipe section is perpendicular to the filter outer barrel, and the input pipe section is located below the filter outer barrel.

9. The device according to claim 1, characterized in that, the nipple is provided with a reducing hole; The second end of the filtering outer barrel is threadedly connected to the first end of the core hole of the pipe plug, and the second end of the core hole of the pipe plug is threadedly connected to the drain valve.

10. The device according to claim 1, wherein, the diameter of the filtering inner barrel is larger than the diameter of the output pipe section.

Images