A multiple-gated valve and metering device for oil wellheads

Abstract

The application provides a multi-path gating valve and a metering device of an oil well head, the multi-path gating valve comprising a first gating valve body, a butt joint pipe assembly and an outlet main collecting pipe; the first gating valve body is provided with a plurality of first liquid inlet cavities and is connected to corresponding gating branch inlet pipes through the first liquid inlet cavities; the gating branch inlet pipes are provided with a plurality of gating branch inlet pipes; the first gating valve body is provided with a liquid outlet; an electric actuator is connected to the butt joint pipe through a rotating shaft; the butt joint pipe is rotatably connected to the first gating valve body, and the butt joint pipe selectively connects a first liquid inlet cavity and a liquid outlet during rotation; the outlet main collecting pipe is connected to the first gating valve body and is connected to the remaining first liquid inlet cavities, so that the outlet main collecting pipe is connected to the remaining gating branch inlet pipes, so as to selectively connect the gating branch inlet pipes and the first outlet pipe, thereby realizing the connection of different gating branch inlet pipes and improving the versatility of the multi-path gating valve.

Description

Technical Field

[0001] This invention relates to the technical field of metering devices for oil wellheads, and more particularly to a multi-channel valve and a metering device for oil wellheads. Background Technology

[0002] With the development of technology, oil wellheads are the holes drilled according to the oilfield development plan for oil extraction, serving as channels for oil to rise from the bottom of the well to the wellhead. Oil wells are holes drilled using drilling methods. Generally, after reaching the oil layer, oil layer casing is run in, and oil well mud is injected into the annular space between the casing and the well wall to maintain the well wall and seal the oil, gas, and liquid layers. Then, according to the requirements of oilfield development, a perforating gun is used to open the oil layer, forming a channel. Tubing is then run in, and an appropriate flow-inducing method is used to rise the oil from the bottom of the well to the wellhead. In existing technology, current selector valves consist of a valve body and an outlet pipe, with the valve body connected to the outlet pipe. However, there is only one channel, resulting in poor versatility of existing selector valves. Summary of the Invention

[0003] The present invention aims to provide a multi-channel selector valve and a metering device for an oil wellhead. The first selector valve body is arranged in a ring shape and has multiple first inlet chambers, which connect to corresponding selector branch inlet pipes. Multiple selector branch inlet pipes are arranged in a ring along the first selector valve body. The first selector valve body has an outlet. The connecting pipe assembly includes an electric actuator, a connecting pipe, and a first outlet pipe. The electric actuator is located on one side of the first selector valve body and is connected to the connecting pipe via a rotating shaft, driving the connecting pipe to rotate. The connecting pipe is rotatably connected to... The first selector valve body rotates along its central axis. During rotation, the connecting pipe selectively connects to a first inlet chamber and an outlet, allowing the inlet pipe of a selector branch to connect to the first outlet pipe via the connecting pipe. The main outlet pipe connects to the first selector valve body and connects to the remaining first inlet chambers, allowing the main outlet pipe to connect to the remaining selector branch inlet pipes. The discharge path of the main outlet pipe and the discharge path of the first outlet pipe are different, so as to facilitate selective connection between the inlet pipe of the selector branch and the first outlet pipe, thereby achieving connection between different selector branch inlet pipes and improving the versatility of the multi-way selector valve.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a multi-way selector valve, applied to a metering device at an oil wellhead, the multi-way selector valve comprising: The first selector valve body is arranged in a ring shape. The first selector valve body is provided with multiple first liquid inlet chambers and connects to the corresponding selector branch inlet pipes through the first liquid inlet chambers. There are multiple selector branch inlet pipes, and the multiple selector branch inlet pipes are arranged in a ring along the first selector valve body. The first selector valve body is provided with a liquid outlet. The connecting pipe assembly includes an electric actuator, a connecting pipe, and a first outlet pipe; the electric actuator is disposed on one side of the first selector valve body, and is connected to the connecting pipe via a rotating shaft, thereby driving the connecting pipe to rotate; the connecting pipe is rotatably connected to the first selector valve body and rotates along the central axis of the first selector valve body; during rotation, the connecting pipe selectively connects to one of the first inlet chambers and the outlet, such that an inlet pipe of a selector branch is connected to the first outlet pipe through the connecting pipe; The main outlet manifold is connected to the body of the first selector valve and connects to the remaining first inlet chamber, so that the main outlet manifold is connected to the remaining selector branch inlet pipe; the discharge path of the main outlet manifold and the discharge path of the first outlet pipe are not the same.

[0005] Optionally, the connecting pipe includes a first sub-connecting pipe and a second sub-connecting pipe; the second sub-connecting pipe is disposed on the outer periphery of the first sub-connecting pipe and communicates with the first sub-connecting pipe; The left end of the first sub-connector is connected to the rotating shaft and rotates along its own axis as the rotating shaft rotates; the right end of the first sub-connector is connected to the first outlet pipe. The second sub-connector rotates as the first sub-connector rotates and sequentially connects to the corresponding first inlet chamber; the second sub-connector can selectively connect to either of the first inlet chambers.

[0006] Optionally, the second sub-connector receives the liquid input through the selected branch inlet pipe and outputs it to the first sub-connector, and the first outlet pipe receives the liquid output through the first sub-connector. The first outlet pipe extends in a bent shape.

[0007] Optionally, the selected branch inlet pipe includes a first branch pipe and a first sub-branch pipe; The first branch pipe is located between the first branch pipe and the first selector valve body, and the first branch pipe connects the first branch pipe and the corresponding first inlet chamber; The first branch pipe is connected to the first pipe opening and closing valve, which is opened or closed by the user.

[0008] Optionally, the selected branch inlet pipe may further include a second branch pipe; The second branch pipe is located on one side of the first branch pipe and is arranged side by side with the first branch pipe. At this time, the second branch pipe and the first branch pipe are connected to the first branch pipe in different directions. The multi-way valve also includes a second valve body, which is disposed on one side of the first valve body. The first outlet pipe passes through the second valve body and is spaced apart from the second valve body. The body of the second selector valve is connected to the main outlet manifold via a bypass outlet manifold.

[0009] Optionally, the second branch pipe is connected to a second pipe opening and closing valve, which opens or closes the second branch pipe under the user's operation; The second branch pipe has multiple branches, which are arranged in a ring along the second gate valve body and connected to the same second gate valve body.

[0010] Optionally, the first selector valve body and the second selector valve body are arranged side by side along the axial direction of the first outlet pipe; or the first selector valve body and the second selector valve body are arranged at intervals. The liquid output from the first selector valve also enters the main outlet pipe; Both the bypass outlet manifold and the main outlet manifold are arranged in an L-shape, and the liquid output from the bypass outlet manifold enters the main outlet manifold.

[0011] Optionally, the main outlet manifold is connected to a third pipeline opening / closing valve, which opens or closes the main outlet manifold under the user's operation.

[0012] Optionally, the bypass outlet manifold is connected to a fourth pipeline opening / closing valve, which opens or closes the bypass outlet manifold under the user's operation.

[0013] To achieve the above objectives, the present invention provides the following technical solution: a metering device for an oil wellhead, comprising the aforementioned multi-way valve and a metering device body for the oil wellhead, wherein the metering device body for the oil wellhead supports the multi-way valve.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a multi-channel selector valve and a metering device for an oil wellhead. The first selector valve body is arranged in a ring shape and has multiple first inlet chambers, which are connected to corresponding selector branch inlet pipes. Multiple selector branch inlet pipes are arranged in a ring along the first selector valve body. The first selector valve body has an outlet. The connecting pipe assembly includes an electric actuator, a connecting pipe, and a first outlet pipe. The electric actuator is located on one side of the first selector valve body and is connected to the connecting pipe via a rotating shaft, driving the connecting pipe to rotate. The connecting pipe is rotatably connected to the first... A first selector valve body rotates along the central axis of the first selector valve body; during rotation, the connecting pipe selectively connects to a first inlet chamber and an outlet, so that the inlet pipe of a selector branch is connected to the first outlet pipe through the connecting pipe; the main outlet pipe is connected to the first selector valve body and connects to the remaining first inlet chamber, so that the main outlet pipe is connected to the remaining selector branch inlet pipes; the discharge path of the main outlet pipe and the discharge path of the first outlet pipe are different from each other, so as to facilitate the selective connection of the selector branch inlet pipe and the first outlet pipe, thereby realizing the connection of different selector branch inlet pipes and improving the versatility of the multi-way selector valve. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0017] Figure 1 A schematic diagram of a multi-way valve according to an embodiment of this application is shown.

[0018] Figure 2 A cross-sectional view of a multi-way valve according to an embodiment of this application is shown.

[0019] Figure 3 It shows Figure 2 A magnified view of a portion of point A in the middle.

[0020] Figure 4 Another schematic diagram of a multi-way valve according to one embodiment of this application is shown.

[0021] Figure 5 A top view of a multi-way valve according to an embodiment of this application is shown.

[0022] Figure Labels 100. Multi-way selector valve; 10. First selector valve body; 10a. First inlet chamber; 10b. Outlet; 11. Selector branch inlet pipe; 111. First branch pipe; 112. First branch pipe; 1121. First pipe opening / closing valve; 113. Second branch pipe; 1131. Second pipe opening / closing valve; 20. Connecting pipe assembly; 21. Electric actuator; 211. Rotating shaft; 22. Connecting pipe; 221. First sub-connecting pipe; 222. Second sub-connecting pipe; 23. First outlet pipe; 30. Main outlet manifold; 31. Third pipeline opening / closing valve; 40. Second selector valve body; 41. Bypass outlet manifold; 411. Fourth pipeline opening and closing valve. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] Please refer to the attached document. Figures 1-5 This application provides a multi-way valve 100, which is applied to a metering device at the wellhead and is used to connect different branch inlet pipes 11.

[0025] Please refer to the attached document. Figures 1-5In this embodiment, the multi-way selector valve 100 includes a first selector valve body 10, a connecting pipe assembly 22 20, and an outlet main collection pipe 30. The first selector valve body 10 is arranged in a ring shape and has multiple first inlet chambers 10a, which are connected to corresponding selector branch inlet pipes 11. Multiple selector branch inlet pipes 11 are arranged in a ring along the first selector valve body 10. The first selector valve body 10 has an outlet 10b. The connecting pipe assembly 22 20 includes an electric actuator 21, a connecting pipe 22, and a first outlet pipe 23. The electric actuator 21 is located on one side of the first selector valve body 10 and is connected to the connecting pipe 22 via a rotating shaft 211, driving the connecting pipe 22 to rotate. Pipe 22 is rotatably connected to the first selector valve body 10 and rotates along the central axis of the first selector valve body 10. During rotation, the connecting pipe 22 selectively connects to a first inlet chamber 10a and an outlet 10b, so that the inlet pipe 11 of a selector branch is connected to the first outlet pipe 23 through the connecting pipe 22. The main outlet pipe 30 is connected to the first selector valve body 10 and connects to the remaining first inlet chamber 10a, so that the main outlet pipe 30 is connected to the remaining selector branch inlet pipe 11. The discharge path of the main outlet pipe 30 and the discharge path of the first outlet pipe 23 are different from each other, so as to facilitate selective connection between the selector branch inlet pipe 11 and the first outlet pipe 23, thereby realizing the connection of different selector branch inlet pipes 11, avoiding only one channel, and improving the versatility of the multi-way selector valve 100.

[0026] Please refer to the attached document. Figures 1-5 In this embodiment, the first selector valve body 10 is arranged in a ring shape. The first selector valve body 10 is provided with multiple first liquid inlet chambers 10a, and the first liquid inlet chambers 10a are connected to the corresponding selector branch inlet pipes 11. There are multiple selector branch inlet pipes 11, and the multiple selector branch inlet pipes 11 are arranged in a ring along the first selector valve body 10. The multiple selector branches are respectively connected to multiple external liquid devices. The liquid output from each external liquid device flows to each first liquid inlet chamber 10a through each selector branch inlet pipe 11. The first selector valve body 10 is provided with an outlet 10b.

[0027] The connecting pipe assembly 20 includes an electric actuator 21, a connecting pipe 22, and a first outlet pipe 23. The electric actuator 21 is located on the outside of the first selector valve body 10. The electric actuator 21 is connected to the connecting pipe 22 via a rotating shaft 211 and drives the connecting pipe 22 to rotate, so that the connecting pipe 22 can achieve automatic rotation. The connecting pipe 22 is rotatably connected to the first selector valve body 10 and rotates along the central axis of the first selector valve body 10, so as to adjust the position of the connecting pipe 22 relative to the first selector valve body 10. During rotation, the connecting pipe 22 selectively connects to a first inlet chamber 10a and an outlet 10b, so that a selector branch inlet pipe 11 is connected to the first outlet pipe 23 through the connecting pipe 22, so that the liquid in the selector branch inlet pipe 11 flows to the first outlet pipe 23 through the first inlet chamber 10a, the outlet 10b, and the connecting pipe 22.

[0028] The main outlet manifold 30 is connected to the first selector valve body 10 and connects to the remaining first inlet chamber 10a, so that the main outlet manifold 30 connects to the remaining selector branch inlet pipe 11; the discharge path of the main outlet manifold 30 and the discharge path of the first outlet pipe 23 are different from each other, so that the selector branch inlet pipe 11 and the first outlet pipe 23 can be connected to each other, thereby realizing the connection of different selector branch inlet pipes 11, avoiding only one channel, and improving the versatility of the multi-way selector valve 100.

[0029] Please refer to the attached document. Figures 1-5 In this embodiment, the connecting pipe 22 includes a first sub-connecting pipe 221 and a second sub-connecting pipe 222; the second sub-connecting pipe 222 is disposed on the outer periphery of the first sub-connecting pipe 221 and communicates with the first sub-connecting pipe 221; the left end of the first sub-connecting pipe 221 is connected to the rotating shaft 211 and rotates along its own axis as the rotating shaft 211 rotates, so that the connecting pipe 22 can be fixedly connected to the rotating shaft 211 through the first sub-connecting pipe 221, thereby facilitating the rotating shaft 211 to drive the connecting pipe 22 to rotate; the right end of the first sub-connecting pipe 221 is connected to the first outlet pipe 23, so that the connecting pipe 22 can be connected to the first outlet pipe 23 through the first sub-connecting pipe 221.

[0030] The second sub-connector 222 rotates with the rotation of the first sub-connector 221 to adjust the position of the second sub-connector 222 relative to the first selector valve body 10. The second sub-connector 222 sequentially connects to the corresponding first inlet chamber 10a. The second sub-connector 222 can selectively connect to any one of the first inlet chambers 10a, so that the connector 22 can selectively connect to any one of the first inlet chambers 10a through the second sub-connector 222.

[0031] Please refer to the attached document. Figures 1-5In this embodiment, the second sub-connector 222 receives liquid input via a selector branch inlet pipe 11 and outputs it to the first sub-connector 221. The first outlet pipe 23 receives liquid output via the first sub-connector 221. This allows liquid from any first inlet chamber 10a to flow through the second sub-connector 222 and the first sub-connector 221 to the first outlet pipe 23. The first outlet pipe 23 extends in a bent shape to allow liquid to flow towards the bent extension, thereby facilitating the flow of liquid from the first outlet pipe 23 to a designated location.

[0032] Please refer to the attached document. Figures 1-5 In this embodiment, the selective branch inlet pipe 11 includes a first branch pipe 111 and a first branch pipe 112. The first branch pipe 112 is located between the first branch pipe 111 and the first selective valve body 10, and connects the first branch pipe 111 and the corresponding first liquid inlet chamber 10a. The first branch pipe 111 is used to connect to an external liquid device, so that the selective branch inlet pipe 11 can be connected to the external liquid device through the first branch pipe 111, thereby facilitating the flow of liquid output from the external liquid device to the corresponding first liquid inlet chamber 10a via the first branch pipe 111 and the first branch pipe 112. The first branch pipe 112 is connected to a first pipe opening and closing valve 1121, which opens or closes the first branch pipe 112 under user operation, so that the first pipe opening and closing valve 1121 controls the flow rate of liquid in the first branch pipe 112 relative to the corresponding first liquid inlet chamber 10a.

[0033] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the branch inlet pipe 11 further includes a second branch pipe 113; the second branch pipe 113 is disposed outside the first branch pipe 111 and arranged side by side with the first branch pipe 112. At this time, the second branch pipe 113 and the first branch pipe 112 are connected to the first branch pipe 111 in different directions, so that the liquid in the first branch pipe 111 can flow to the second branch pipe 113 and the first branch pipe 112 respectively.

[0034] The multi-way valve 100 also includes a second valve body 40, which is disposed on one side of the first valve body 10. The first outlet pipe 23 passes through the second valve body 40 and is spaced apart from it, preventing liquid from the second valve body 40 from flowing to the first outlet pipe 23. The second valve body 40 is connected to the main outlet pipe 30 through a bypass outlet manifold 41, so that the liquid from the second valve body 40 can flow to the main outlet pipe 30 through the bypass outlet manifold 41.

[0035] Please refer to the attached document. Figures 1-5In this embodiment, the second branch pipe 113 is connected to a second pipe opening and closing valve 1131. The second pipe opening and closing valve 1131 opens or closes the second branch pipe 113 under the operation of the user. There are multiple second branch pipes 113, which are arranged in a ring along the second selector valve body 40 and connected to the same second selector valve body 40, so that the second pipe opening and closing valve 1131 can control the flow rate of the liquid in the second branch pipe 113 relative to the corresponding second selector valve body 40.

[0036] Please refer to the attached document. Figures 1-5 In this embodiment, the first selector valve body 10 and the second selector valve body 40 are arranged side by side along the axial direction of the first outlet pipe 23; the first selector valve body 10 and the second selector valve body 40 are arranged at intervals; so that the first selector valve body 10 and the second selector valve body 40 can be arranged separately, and the liquid output through the first selector valve body 10 also enters the outlet main collection pipe 30; the bypass outlet collection pipe 41 and the outlet main collection pipe 30 are both arranged in an L-shape, and the liquid output through the bypass outlet collection pipe 41 enters the outlet main collection pipe 30, so that the excess liquid in the first selector valve body 10 and the excess liquid in the second selector valve body 40 can both flow to the outlet main collection pipe 30.

[0037] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the outlet main collection pipe 30 is connected to a third pipeline opening and closing valve 31. The third pipeline opening and closing valve 31 opens or closes the outlet main collection pipe 30 under the operation of the user, so that the third pipeline opening and closing valve 31 can control the flow rate of the liquid in the outlet main collection pipe 30 relative to the outside.

[0038] In this embodiment, the bypass outlet manifold 41 is connected to a fourth pipeline opening and closing valve 411. The fourth pipeline opening and closing valve 411 opens or closes the bypass outlet manifold 41 under the operation of the user, so that the fourth pipeline opening and closing valve 411 can control the flow rate of the liquid in the bypass outlet manifold 41 relative to the outlet main manifold 30.

[0039] In the second embodiment of the application, a metering device for an oil wellhead includes a multi-way valve 100 and a metering device body for the oil wellhead. The metering device body for the oil wellhead supports the multi-way valve 100 so that the multi-way valve 100 can be fixed to the metering device body for the oil wellhead. The metering device for the oil wellhead is used to raise oil from the bottom of the oil well to the wellhead.

[0040] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a multi-way selector valve 100 and a metering device for an oil wellhead. The first selector valve body 10 is arranged in a ring shape and has multiple first inlet chambers 10a, which connect to corresponding selector branch inlet pipes 11. Multiple selector branch inlet pipes 11 are arranged in a ring along the first selector valve body 10. The first selector valve body 10 has an outlet 10b. The connecting pipe assembly 20 includes an electric actuator 21, a connecting pipe 22, and a first outlet pipe 23. The electric actuator 21 is located on one side of the first selector valve body 10 and is connected to the connecting pipe 22 via a rotating shaft 211, driving the connecting pipe 22 to rotate. The connecting pipe 22 is rotatably connected to the first... The first selector valve body 10 rotates along its central axis. During rotation, the connecting pipe 22 selectively connects to a first inlet chamber 10a and an outlet 10b, allowing a selector branch inlet pipe 11 to connect to a first outlet pipe 23 via the connecting pipe 22. The outlet main collection pipe 30 is connected to the first selector valve body 10 and connects to the remaining first inlet chamber 10a, allowing the outlet main collection pipe 30 to connect to the remaining selector branch inlet pipes 11. The discharge path of the outlet main collection pipe 30 and the discharge path of the first outlet pipe 23 are not the same, so that the selector branch inlet pipe 11 can be selectively connected to the first outlet pipe 23, thereby achieving connection of different selector branch inlet pipes 11, avoiding having only one channel, and improving the versatility of the multi-way selector valve 100.

[0041] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0042] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0043] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A multi-way selector valve, characterized in that, A metering device applied at the wellhead, wherein the multi-way selector valve includes: The first selector valve body is arranged in a ring shape. The first selector valve body is provided with multiple first liquid inlet chambers and connects to the corresponding selector branch inlet pipes through the first liquid inlet chambers. There are multiple selector branch inlet pipes, and the multiple selector branch inlet pipes are arranged in a ring along the first selector valve body. The first selector valve body is provided with a liquid outlet. The connecting pipe assembly includes an electric actuator, a connecting pipe, and a first outlet pipe; the electric actuator is disposed on one side of the first selector valve body, and is connected to the connecting pipe via a rotating shaft, thereby driving the connecting pipe to rotate; the connecting pipe is rotatably connected to the first selector valve body and rotates along the central axis of the first selector valve body; during rotation, the connecting pipe selectively connects to one of the first inlet chambers and the outlet, such that an inlet pipe of a selector branch is connected to the first outlet pipe through the connecting pipe; The main outlet manifold is connected to the body of the first selector valve and connects to the remaining first inlet chamber, so that the main outlet manifold is connected to the remaining selector branch inlet pipe; the discharge path of the main outlet manifold and the discharge path of the first outlet pipe are not the same.

2. The multi-way selector valve according to claim 1, characterized in that, The connecting pipe includes a first sub-connecting pipe and a second sub-connecting pipe; the second sub-connecting pipe is disposed on the outer periphery of the first sub-connecting pipe and is connected to the first sub-connecting pipe; The left end of the first sub-connector is connected to the rotating shaft and rotates along its own axis as the rotating shaft rotates; the right end of the first sub-connector is connected to the first outlet pipe. The second sub-connector rotates as the first sub-connector rotates and sequentially connects to the corresponding first inlet chamber; the second sub-connector can selectively connect to either of the first inlet chambers.

3. The multi-way selector valve according to claim 2, characterized in that, The second sub-connector receives the liquid input through the inlet pipe of one of the selected branch lines and outputs it to the first sub-connector; the first outlet pipe receives the liquid output through the first sub-connector. The first outlet pipe extends in a bent shape.

4. The multi-way selector valve according to claim 3, characterized in that, The selected branch inlet pipe includes a first branch pipe and a first sub-branch pipe; The first branch pipe is located between the first branch pipe and the first selector valve body, and the first branch pipe connects the first branch pipe and the corresponding first inlet chamber; The first branch pipe is connected to a first pipe opening and closing valve, which is opened or closed by the user.

5. The multi-way selector valve according to claim 4, characterized in that, The selected branch inlet pipe also includes a second branch pipe; The second branch pipe is located on one side of the first branch pipe and is arranged side by side with the first branch pipe. At this time, the second branch pipe and the first branch pipe are connected to the first branch pipe in different directions. The multi-way valve also includes a second valve body, which is disposed on one side of the first valve body. The first outlet pipe passes through the second valve body and is spaced apart from the second valve body. The body of the second selector valve is connected to the main outlet manifold via a bypass outlet manifold.

6. The multi-way selector valve according to claim 5, characterized in that, The second branch pipe is connected to a second pipe opening and closing valve, which opens or closes the second branch pipe under the user's operation; The second branch pipe has multiple branches, which are arranged in a ring along the second gate valve body and connected to the same second gate valve body.

7. The multi-way selector valve according to claim 5, characterized in that, The first selector valve body and the second selector valve body are arranged side by side along the axial direction of the first outlet pipe; the first selector valve body and the second selector valve body are arranged at intervals. The liquid output from the first selector valve also enters the main outlet pipe; Both the bypass outlet manifold and the main outlet manifold are arranged in an L-shape, and the liquid output from the bypass outlet manifold enters the main outlet manifold.

8. The multi-way selector valve according to claim 7, characterized in that, The main outlet pipe is connected to a third pipeline opening and closing valve, which can be opened or closed by the user.

9. The multi-way selector valve according to claim 8, characterized in that, The bypass outlet manifold is connected to a fourth pipeline opening and closing valve, which can be opened or closed by the user.

10. A metering device for an oil wellhead, characterized in that, It includes a multi-way valve as described in any one of claims 1 to 9 and a metering device body at the wellhead, wherein the metering device body at the wellhead supports the multi-way valve.

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