CN213874518U - Flowmeter cleaning device - Google Patents

Abstract

The application discloses flowmeter belt cleaning device belongs to oil field water injection technical field. The flowmeter belt cleaning device that this application embodiment provided sets up between water injection pipeline and flowmeter, and the device is interior to filter the bucket and be located and filter outer bucket, and the output pipe section and flowmeter intercommunication are passed through to the one end of interior bucket of filtering, and the other end sets up detachable joint. Based on above structure, when wasing the operation to the flowmeter, only need will filter the interior bucket through detachable joint and lift off, then pass and filter outer bucket and just can wash the operation to the flowmeter, just so need not to dismantle and install the flowmeter, reduced abluent activity duration, reduced intensity of labour to cleaning efficiency has been improved.

Description

Flowmeter cleaning device

Technical Field

The application relates to the technical field of oilfield flooding. In particular to a flowmeter cleaning device.

Background

In the process of oil field development, water is generally injected into an oil field through a water injection well, so that the pressure of an oil layer is maintained, the oil layer has stronger driving force, and the oil recovery is improved. Wherein, when injecting water into the water injection well, the amount of injected water is mainly measured by a flow meter installed on a water injection pipeline. However, the water injected into the oil field is generally contaminated water, and the contaminated water contains impurities, and the flow meter is clogged or the flow meter probe is contaminated by the contaminated water flowing through the flow meter for a long time, and in such a case, the flow meter needs to be cleaned.

In the related art, the water injection operation is required to be stopped when the flowmeter is cleaned, then the flowmeter is disassembled to be cleaned, and the cleaned flowmeter is installed on a water injection pipeline.

However, in the related art, the flowmeter needs to be disassembled to be cleaned, and the flowmeter needs to be installed after being cleaned. Therefore, the work time for cleaning the flow meter is long and labor-intensive, resulting in low cleaning efficiency.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a flowmeter belt cleaning device, can improve the abluent efficiency of flowmeter. The specific technical scheme is as follows:

the embodiment of the application provides a flowmeter belt cleaning device, the device includes: the device comprises an input pipe section, a filtering outer barrel, a filtering inner barrel, an output pipe section and an emptying valve;

the filtering inner barrel is positioned in the filtering outer barrel;

the first end of the input pipe section is communicated with a water injection pipeline through a control valve, the second end of the input pipe section is communicated with the first end of the filtering outer barrel, and the second end of the filtering outer barrel is detachably communicated with the emptying valve through a screwed plug;

the first end of the output pipe section passes through the third end of the filtering outer barrel and is detachably communicated with the first end of the filtering inner barrel;

the second end of the filtering inner barrel is provided with a detachable joint, and the second end of the output pipe section is communicated with a flowmeter;

when water is injected through the water injection pipeline, the emptying valve is in a closed state;

when the flowmeter is cleaned, the emptying valve is in an open state, and the plug is used for disassembling the emptying valve and separating the emptying valve from the filtering outer barrel; the detachable joint is used for detaching the inner filtering barrel after the emptying valve is separated from the inner filtering barrel, and separating the inner filtering barrel from the output pipe section; and the filtering outer barrel is used for providing a channel for cleaning the flowmeter.

In one possible implementation mode, the first end of the output pipe section is provided with external screw threads, and the first end of the inner filtering barrel is provided with internal screw threads;

the first end of the output pipe section is communicated with the first end of the filtering inner barrel through the outer screw thread and the inner screw thread.

In another possible implementation manner, a circular hole is arranged on the side wall of the third end of the filtering outer barrel;

the circle center of the circular hole is positioned above the central line of the filtering outer barrel;

the first end of the output pipe section penetrates through the round hole to be communicated with the first end of the filtering inner barrel.

In another possible implementation manner, the output pipe section is fixedly connected with a contact part of a third end of the filtering outer barrel;

the second end of the input pipe section is fixedly connected with the contact part of the first end of the filtering outer barrel.

In another possible implementation manner, the center line of the output pipe section is in the same line with the center line of the filtering inner barrel.

In another possible implementation, the centerline of the filtering outer drum is parallel to the centerline of the output pipe section, and the centerline of the output pipe section is located above the centerline of the filtering outer drum.

In another possible implementation, the second end of the output pipe section is in slip communication with the flow meter; alternatively, the first and second electrodes may be,

and the second end of the output pipe section is communicated with the flowmeter through a flange.

In another possible implementation, the input pipe section is perpendicular to the filtering outer barrel, and the input pipe section is located below the filtering outer barrel.

In another possible implementation, the plug has a coring hole;

and the second end of the filtering outer barrel is in threaded connection with the first end of the core supplementing hole of the plug, and the second end of the core supplementing hole of the plug is in threaded connection with the emptying valve.

In another possible implementation, the diameter of the inner filtering barrel is larger than the diameter of the output pipe section.

The technical scheme provided by the embodiment of the application has the following beneficial effects:

the flowmeter belt cleaning device that this application embodiment provided sets up between water injection pipeline and flowmeter, and the device is interior to filter the bucket and be located and filter outer bucket, and the output pipe section and flowmeter intercommunication are passed through to the one end of interior bucket of filtering, and the other end sets up detachable joint. Based on above structure, when wasing the operation to the flowmeter, only need will filter the interior bucket through detachable joint and lift off, then pass and filter outer bucket and just can wash the operation to the flowmeter, just so need not to dismantle and install the flowmeter, reduced abluent activity duration, reduced intensity of labour to cleaning efficiency has been improved.

Drawings

Fig. 1 is a schematic view of a flowmeter cleaning device according to an embodiment of the present application.

The reference numerals denote:

1-input pipe section, 2-filtering outer barrel, 3-filtering inner barrel, 4-output pipe section, 5-emptying valve and 6-plug.

Detailed Description

In order to make the technical solutions and advantages of the present application more clear, the following describes the embodiments of the present application in further detail.

Water flooding is a necessary link in the development of oil fields. In order to effectively control and meter the amount of water delivered to each injection well, a flow meter is typically installed in the injection line, through which the flow of water is measured. However, because the water injected into the well is basically oil field sewage, the blockage of the flow meter or the pollution of the probe of the flow meter often occurs, so that the water flow can not be seen only by the sound of the water, the accurate water injection and the accurate water injection into the well can not be realized, and at the moment, the flow meter needs to be disassembled to clean the flow meter. At present, when the flowmeter is cleaned, the water injection operation needs to be stopped firstly, the flowmeter is disassembled to be cleaned, and then the cleaned flowmeter is installed on a water injection pipeline. Therefore, the current cleaning operation for the flowmeter is long in time and labor-intensive, so that the cleaning efficiency is low.

An embodiment of the present application provides a flowmeter cleaning device, see fig. 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 an emptying valve 5;

the filtering inner barrel 3 is positioned in the filtering outer barrel 2;

the first end of the input pipe section 1 is communicated with a water injection pipeline through a control valve, the second end of the input pipe section 1 is communicated with the first end of the filtering outer barrel 2, and the second end of the filtering outer barrel 2 is detachably communicated with an emptying valve 5 through a screwed plug 6;

the first end of the output pipe section 4 passes through the third end of the filtering outer barrel 2 and is detachably communicated with the first end of the filtering inner barrel 3;

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 communicated with a flowmeter;

when water is injected through the water injection pipeline, the emptying valve 5 is in a closed state;

when the flowmeter is cleaned, the emptying valve 5 is in an open state, and the plug 6 is used for disassembling the emptying valve 5 and separating the emptying valve 5 from the filtering outer barrel 2; the detachable joint is used for detaching the inner filtering barrel 3 after the emptying valve 5 is separated from the inner filtering barrel 3, and separating the inner filtering barrel 3 from the output pipe section 4; and the filtering outer barrel 2 is used for providing a channel for cleaning the flowmeter.

When water is injected through the water injection pipeline, the control valve is opened, the emptying valve 5 is closed, and water flows through the input pipeline, the filtering outer barrel 2, the filtering inner barrel 3, the output pipeline and the flowmeter in sequence and finally enters the oil layer.

The flowmeter belt cleaning device that this application embodiment provided sets up between water injection pipeline and flowmeter, and the device filters interior bucket 3 and is located and filters outer bucket 2 in, and filters the one end of interior bucket 3 and pass through delivery pipe section 4 and flowmeter intercommunication, and the other end sets up detachable joint. Based on above structure, when wasing the operation to the flowmeter, only need to lift off interior bucket 3 of will filtering through detachable joint, then pass and filter outer bucket 2 and just can wash the operation to the flowmeter, just so need not to dismantle and install the flowmeter, reduced abluent activity duration, reduced intensity of labour to cleaning efficiency has been improved.

Introduction of the output pipe section 4: in a possible implementation, the first end of the output pipe section 4 and the first end of the inner filtering barrel 3 may be connected by screw threads. In this embodiment, whether the first end of the output pipe section 4 is provided with the inner screw thread or the outer screw thread is not particularly limited.

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

the first end of the output pipe section 4 is communicated with the first end of the inner filtering barrel 3 through an outer screw thread and an inner screw thread.

In another possible implementation manner, the first end of the output pipe section 4 may also be provided with an inner screw thread, the first end of the inner filtering barrel 3 is provided with an outer screw thread, and the first end of the output pipe section 4 is communicated with the first end of the inner filtering barrel 3 through the outer screw thread and the inner screw thread.

In this implementation, the output pipe section 4 is connected with the filtering inner barrel 3 through a screw thread, and the other end of the filtering inner barrel 3 is provided with a detachable joint, so that when the flowmeter is cleaned, the filtering inner barrel 3 can be detached from the output pipe section 4 by detaching the detachable joint, and the flowmeter is cleaned through subsequently passing the filtering outer barrel 2.

In a possible implementation manner, the detachable interface may be set and changed as needed, and this is not particularly limited in the embodiment of the present application. For example, the detachable interface may be a wrench socket. The shape of the wrench opening can be set and changed as required, for example, the shape of the wrench opening can be hexagonal or other shapes.

In another possible implementation manner, the first end of the output pipe segment 4 and the first end of the inner filtering barrel 3 may be connected by other detachable connection manners. In the embodiments of the present application, this is not particularly limited. For example, the first end of the output pipe segment 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 is connected with the first end of the inner filtering barrel 3 through 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 embodiment of the present application, whether the first end of the output pipe section 4 is provided with the internal thread or the external thread is not particularly limited.

In one possible implementation, the second end of the output pipe section 4 is in slip communication with the flow meter; alternatively, the first and second electrodes may be,

the second end of the output pipe section 4 is in flange communication with the flow meter.

In the embodiment of the present application, the communication manner between the second end of the output pipe section 4 and the flow meter is not particularly limited. When the communication mode is slip 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 plain joint; when the communication mode is flange connection, the second end of the output pipe section 4 and the flowmeter can be fixed through bolts.

In a possible implementation manner, the type of the flow meter may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited. In the embodiment of the present application, the communication manner of the flow meter with the second end of the output pipe section 4 can be adjusted according to the type of the flow meter.

In a possible implementation manner, the length of the output pipe section 4 can be set and changed according to needs, and in the embodiment of the present application, this is not particularly limited.

In a possible implementation manner, the material of the output pipe section 4 may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited. For example, the material of the output pipe section 4 is cast iron or an alloy, which may be stainless steel.

In a possible implementation, the diameter of the output pipe section 4 can be set and changed as required, and in the embodiment of the present application, this is not particularly limited. For example, the diameter of the output pipe section 4 may be 100mm or 120 mm.

Introduction of the input pipe section 1: in a possible implementation manner, the connection manner of the second end of the input pipe section 1 and the first end of the filtering outer barrel 2 may be set and modified as required, and in the embodiment of the present application, this is not particularly limited. For example, the connection means may be a fixed connection, and the fixed connection may be welding.

In a possible implementation, the input pipe section 1 is at an angle to the filtering outer drum 2, and the input pipe section 1 is located below the filtering outer drum 2.

In this implementation, the angle between the input pipe section 1 and the filtering outer tub 2 is not particularly limited. For example, the angle is 90 °, i.e. the input pipe section 1 is perpendicular to the filtering outer tub 2, see fig. 1.

In this application embodiment, input pipeline section 1 is perpendicular with filtering outer bucket 2, and when through the water injection pipeline water injection, rivers are through input pipeline section 1 time, and the rivers direction is upwards perpendicularly, and large granule impurity or other impurity in aquatic will subside under the action of gravity like this, avoid along with rivers entering flowmeter, reduced flowmeter jam or the emergence of flowmeter probe by the contaminated condition to a certain extent.

In a possible implementation manner, the length of the input pipe section 1 can be set and changed according to needs, and in the embodiment of the present application, this is not particularly limited.

In a possible implementation manner, the material of the input pipe section 1 may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited. For example, the material of the input pipe section 1 is cast iron or an alloy, which may be stainless steel.

In a possible implementation manner, the diameter of the input pipe section 1 can be set and changed according to needs, and in the embodiment of the present application, this is not particularly limited. For example, the diameter of the input pipe section 1 may be 100mm or 120 mm.

The diameter of the input pipe section 1 and the diameter of the output pipe section 4 may be the same or different, and in the embodiment of the present application, this is not particularly limited.

In one possible implementation, the water injection operation is typically a pressured operation due to the reservoir pressure. This places demands on the pressure capacity of the outlet pipe section 4 and the pressure capacity of the inlet pipe section 1. In the embodiment 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 may be set and changed as needed, and this is not particularly limited in the embodiment of the present application. For example, the pressure-bearing capacity of the output pipe section 4 is greater than 10Mpa, and the pressure-bearing capacity of the input pipe section 1 is greater than 10 Mpa.

It should be noted that, since the injected water is generally oilfield wastewater, which may contain corrosive substances and easily corrode pipelines, the input pipe section 1 and the output pipe section 4 may be subjected to corrosion prevention treatment. In the examples of the present application, the specific manner of the anticorrosive treatment is not particularly limited.

Introduction of the evacuation valve 5: in a possible implementation, the type of evacuation valve 5 can be set and modified as required, which is not particularly limited in the embodiments of the present application. For example, the evacuation valve 5 may be an automatic evacuation valve 5 or a mechanical evacuation valve 5.

Introduction of the filtering outer tub 2: in the embodiment of the present application, the filtering outer tub 2 is used to provide a passage for cleaning the flow meter. When the flowmeter is cleaned, after the plug 6 and the inner filtering barrel 3 are removed, relevant personnel can directly clean the flowmeter through the outer filtering barrel 2 without disassembling the flowmeter, and the cleaning efficiency is improved.

In a possible implementation manner, a circular hole is arranged on the side wall of the third end of the filtering outer barrel 2;

the circle center of the circular hole is positioned above the central line of the filtering outer barrel 2;

the first end of the output pipe section 4 passes through the round hole and is communicated with the first end of the filtering inner barrel 3.

In this implementation, the centre of a circle of round hole is located the top of filtering outer bucket 2's central line, and at the water injection in-process, the large granule impurity of aquatic and the remaining welding slag can sink to the bottom of filtering outer bucket 2 when welding under the action of gravity, and do not enter into output tube section 4 along with the rivers to can reduce the flowmeter to block up and the emergence of flowmeter by the pollution condition to a certain extent.

The diameter of the circular hole may be set and changed as needed, which is not specifically limited in the embodiment of the present application. It should be noted, however, that the diameter of the circular hole is greater than the diameter of the outlet pipe section 4. For example, if the diameter of the output pipe section 4 is 100mm, the diameter of the circular hole may be 110mm or 120 mm.

In a possible implementation manner, the contact part of the output pipe section 4 and the third end of the filtering outer barrel 2 is fixedly connected;

the second end of the input pipe section 1 is fixedly connected with the contact part of the first end of the filtering outer barrel 2.

In this implementation, the contact part fixed connection of the output pipe section 4 and the third end of the filtering outer barrel 2 can make water flow stable, and the output pipe section 4 can be prevented from moving back and forth when the water flow is large to influence the measurement of the flowmeter.

The fixed connection manner may be set and changed as needed, and is not particularly limited in the embodiment of the present application. For example, the fixed connection manner may be welding, that is, the contact position of the output pipe section 4 and the third end of the filtering outer barrel 2 is welded, and the contact position of the second end of the input pipe section 1 and the first end of the filtering outer barrel 2 is welded.

In a possible implementation, the second end of the filtering outer drum 2 is detachably communicated with the emptying valve 5 through a plug 6.

In the implementation mode, the plug 6 is provided with a heart supplementing hole; the second end of the filtering outer barrel 2 is connected with the first end of the core supplementing hole of the plug 6 in a threaded manner, and the second end of the core supplementing hole of the plug 6 is connected with the emptying valve 5 in a threaded manner.

In the embodiment of the present application, the inner filtering barrel 3 is located in the outer filtering barrel 2, and 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 above structure, when wasing the operation to the flowmeter, only need to lift off blowoff valve 5 through plug 6, then will filter interior bucket 3 through detachable joint and lift off, then pass and filter outer bucket 2 and just can wash the operation to the flowmeter, just so need not to dismantle and install the flowmeter, reduced abluent activity duration, reduced intensity of labour to the cleaning efficiency has been improved.

After the cleaning operation is finished, the inner filtering barrel 3 and the output pipe section 4 are aligned and connected through the detachable joint, then the emptying valve 5 and the outer filtering barrel 2 are connected through the screwed plug 6, the emptying valve 5 is closed, and water is continuously injected into an oil layer.

In a possible implementation, the center line of the filtering outer 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 filtering outer barrel 2.

In this implementation, because the central line of output tube section 4 is located the top of the central line of filtering outer bucket 2, consequently, when water got into and filters outer bucket 2, the bottom of filtering outer bucket 2 will be sunk to the large granule impurity in aquatic or the welding slag when welding under the action of gravity, and does not enter output tube section 4 along with the rivers to can reduce the flowmeter to block up and the emergence of flowmeter by the pollution condition to a certain extent.

The welding slag can be welding slag generated when the contact position of the third end of the output pipe section 4 and the filtering outer barrel 2 is welded, or welding slag generated when the contact position of the second end of the input pipe section 1 and the first end of the filtering outer barrel 2 is welded. In the embodiments of the present application, this is not particularly limited.

In a possible implementation manner, the length of the outer filtering barrel 2 may be set and changed as needed, and the length of the inner filtering barrel 3 may also be set and changed as needed, which is not particularly limited in the embodiment of the present application. However, it should be noted that the length of the inner filtering barrel 3 is shorter than that of the outer filtering barrel 2.

In a possible implementation manner, the material of the filtering outer tub 2 may be set and changed as needed, and is not particularly limited in the embodiment of the present application. For example, the material of the filtering tub 2 may be cast iron or an alloy, and the alloy may be stainless steel.

In a possible implementation manner, the shape of the filtering outer barrel 2 may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited. For example, the filtering outer tub 2 has a cylindrical or conical barrel shape.

Introduction of inner filtering barrel 3: in this application embodiment, filter interior bucket 3 and be connected with output pipe section 4, the welding slag when can filtering the large granule impurity of aquatic and welding has reduced the emergence of flowmeter trouble to a certain extent.

In a possible implementation manner, the filtering particle size of the filtering inner barrel 3 may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited. For example, the filtration particle size may be 60 mesh or 100 mesh.

In a possible implementation mode, the filtering inner barrel 3 and the filtering outer barrel 2 can be cleaned regularly or irregularly, pollutants and large-particle impurities in the filtering outer barrel 2 are removed in time, and the occurrence of the condition that a flow meter is blocked or a flow meter probe is polluted is reduced to a certain extent.

In a possible implementation manner, the material of the filtering inner barrel 3 may be set according to needs, and in the embodiment of the present application, this is not particularly limited. For example, the material of the inner filtering barrel 3 may be cast iron or an alloy, and the alloy may be stainless steel.

The material of the outer filtering barrel 2 and the material of the inner filtering barrel 3 may be the same or different, and in the embodiment of the present application, this is not particularly limited. For example, the material of the outer filtering barrel 2 and the material of the inner filtering barrel 3 are the same, and are both stainless steel.

In a possible implementation manner, the shape of the inner filtering barrel 3 may be set and modified as needed, and in the embodiment of the present application, this is not particularly limited. For example, the filtering inner barrel 3 has a cylindrical or conical barrel shape.

Wherein, the shape of the inner filtering barrel 3 and the shape of the outer filtering barrel 2 can be the same or different. In the embodiments of the present application, this is not particularly limited. For example, the inner filter tub 3 and the outer filter tub 2 have the same shape and are cylindrical.

In a possible implementation, the centerline of the output pipe section 4 is aligned with the centerline of the inner filtering barrel 3.

In the implementation mode, the center line of the output pipe section 4 and the center line of the filtering inner barrel 3 are concentrically arranged, so that water flow can be stable, and the flowmeter can accurately measure water flow conveniently.

In a possible realization, the diameter of the inner filtering barrel 3 is larger than the diameter of the outlet pipe section 4. The diameter of the inner filtering barrel 3 can be set and changed as required, and the diameter of the output pipe section 4 can also be set and changed as required, which is not specifically limited in the embodiment of the present application. For example, the diameter of the inner filtering barrel 3 is 90mm, and the diameter of the output pipe section 4 is 80 mm.

The flowmeter belt cleaning device that this application embodiment provided sets up between water injection pipeline and flowmeter, and the device filters interior bucket 3 and is located and filters outer bucket 2 in, and filters the one end of interior bucket 3 and pass through delivery pipe section 4 and flowmeter intercommunication, and the other end sets up detachable joint. Based on above structure, when wasing the operation to the flowmeter, only need to lift off blowoff valve 5 through plug 6, then will filter interior bucket 3 through detachable joint and lift off, then pass and filter outer bucket 2 and just can wash the operation to the flowmeter, just so need not to dismantle and install the flowmeter, reduced abluent activity duration, reduced intensity of labour to the cleaning efficiency has been improved.

And because the operation mode of simple and reliable cleaning is adopted, the cleaning is more timely, the situation that the flow is not seen only by the water sound caused by the blockage of the flowmeter is avoided to the maximum extent, and the accurate water injection and the precise water injection of the oil field are ensured.

In addition, the installation flowmeter belt cleaning device can also filter the impurity in the sewage between flowmeter and water injection pipeline, has effectively solved because of the relatively poor influence to flowmeter measurement water flow of the quality of water of pouring into, has greatly reduced the emergence of flowmeter trouble, has reduced the fault rate that the flowmeter blockked up, has reduced intensity of labour to a certain extent, has reduced the requirement of flowmeter to quality of water simultaneously.

Moreover, a flowmeter cleaning device is arranged between the water injection pipeline and the flowmeter, and the welding procedure of the wellhead flow can be simplified. The original procedure is to weld a straight pipe section on an elbow and weld a joint connected with a control valve under the straight pipe section. A straight pipe section is welded at the horizontal end of the elbow, a reducer pipe fitting is welded at the other end of the straight pipe section, and a straight pipe section with a connector connected with the flowmeter is welded at one end of the reducer pipe fitting. This makes the welding process complicated. Nowadays, the procedures and devices are replaced by the flowmeter cleaning device provided by the embodiment of the application, and the welding labor intensity is reduced to a certain extent.

The above description is only for facilitating the understanding of the technical solutions of the present application by those skilled in the art, and is not intended to limit the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A flowmeter cleaning device, the device comprising: the device comprises an input pipe section, a filtering outer barrel, a filtering inner barrel, an output pipe section and an emptying valve;

the filtering inner barrel is positioned in the filtering outer barrel;

the first end of the input pipe section is communicated with a water injection pipeline through a control valve, the second end of the input pipe section is communicated with the first end of the filtering outer barrel, and the second end of the filtering outer barrel is detachably communicated with the emptying valve through a screwed plug;

the first end of the output pipe section passes through the third end of the filtering outer barrel and is detachably communicated with the first end of the filtering inner barrel;

the second end of the filtering inner barrel is provided with a detachable joint, and the second end of the output pipe section is communicated with a flowmeter;

when water is injected through the water injection pipeline, the emptying valve is in a closed state;

when the flowmeter is cleaned, the emptying valve is in an open state, and the plug is used for disassembling the emptying valve and separating the emptying valve from the filtering outer barrel; the detachable joint is used for detaching the inner filtering barrel after the emptying valve is separated from the inner filtering barrel, and separating the inner filtering barrel from the output pipe section; and the filtering outer barrel is used for providing a channel for cleaning the flowmeter.

2. The apparatus of claim 1, wherein the first end of the output tube segment is externally threaded and the first end of the inner filtering barrel is internally threaded;

the first end of the output pipe section is communicated with the first end of the filtering inner barrel through the outer screw thread and the inner screw thread.

3. The apparatus as claimed in claim 1, wherein a circular hole is formed on a side wall of the third end of the filtering outer tub;

the circle center of the circular hole is positioned above the central line of the filtering outer barrel;

the first end of the output pipe section penetrates through the round hole to be communicated with the first end of the filtering inner barrel.

4. The apparatus of claim 3, wherein the output pipe section is fixedly connected to a contact portion of the third end of the filtering outer drum;

the second end of the input pipe section is fixedly connected with the contact part of the first end of the filtering outer barrel.

5. The apparatus of claim 1, wherein a centerline of the output pipe segment is aligned with a centerline of the inner filtering barrel.

6. The apparatus of claim 5 wherein the centerline of the filtration outer drum is parallel to the centerline of the output tube section, and the centerline of the output tube section is above the centerline of the filtration outer drum.

7. The apparatus of claim 1, wherein the second end of the outlet section is in slip communication with the flow meter; alternatively, the first and second electrodes may be,

and the second end of the output pipe section is communicated with the flowmeter through a flange.

8. The apparatus of claim 1 wherein the input pipe section is perpendicular to the filtration outer drum and the input pipe section is located below the filtration outer drum.

9. The device of claim 1, wherein the plug has a coring hole;

and the second end of the filtering outer barrel is in threaded connection with the first end of the core supplementing hole of the plug, and the second end of the core supplementing hole of the plug is in threaded connection with the emptying valve.

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

Images