Numerical control multi-way valve for oil field metering

Abstract

The invention belongs to the technical field of oil field metering, and particularly relates to a numerical control multi-way valve for oil field metering. Comprising a base, the base is fixedly connected with a liquid guide part, the liquid guide part is communicated with a bypass channel, the upper side of the liquid guide part is fixedly connected with a connecting shell, the upper side of the connecting shell is fixedly connected with a mixed output port, one side of the connecting shell is fixedly connected with a sealing partition plate, and the other side of the connecting shell is fixedly connected with a first fixing shell; the connecting shell is fixedly connected with a plurality of single well inlets, a communicating assembly is arranged in the connecting shell, and the communicating assembly is used for communicating all the single well inlets, the liquid guiding piece and the mixed output port. By means of the design of the centralized multi-way valve, compared with a traditional distributed valve set, the total occupied area of equipment is reduced, centralized management and operation are facilitated, and during use, automatic switching can be achieved only by selecting a needed oil well through remote numerical control, so that metering delay caused by manual intervention is eliminated.

Description

Technical Field

[0001] The invention belongs to the technical field of oil field metering, and in particular relates to a digitally controlled multi-way valve for oil field metering. Background Art

[0002] Oilfield metering valve groups are key equipment used for collecting and measuring oil well fluids (crude oil, natural gas, etc.) in oil and gas field development. Their main functions include: Multi-well fluid switching: By switching the open and closed states of the valve combination, the fluids from different oil wells can be connected or isolated, and patrol metering is supported; System safety isolation: During equipment maintenance, troubleshooting, or wellhead operations, the target well is disconnected from the downstream pipeline to prevent fluid leakage or cross contamination.

[0003] Traditional oilfield metering valve group mainly consists of the following parts: Valve body and valve core: as the core components of the fluid channel, the fluid is switched on and off by switching the position of the valve core in the valve seat (such as gate valves and ball valves); Valve operating mechanism: usually a manual operating device (such as a handwheel or handle) that relies on manual control to open and close the valve; Manifold system: A network of multiple connectors (tees, crosses, etc.) and pipelines used to connect multiple oil wells to separators, flow meters and other metering equipment to form a fluid transmission path.

[0004] In actual oilfield applications, traditional valve groups have the following technical defects, which restrict metering efficiency and system reliability: Inefficient operations: When multiple wells need to be switched, multiple valves must be manually operated one by one, resulting in a time-consuming operation and potential delays caused by repetitive manual intervention. (In emergencies, such as pressure anomalies requiring emergency wellhead switching or shutting down, the linear process of "discovering the anomaly → reporting → decision-making → manual operation" is required, significantly extending response time.) Space and integration defects: Each well needs to be equipped with valves, manifolds and isolation devices separately, resulting in a large equipment footprint and complex layout, which increases the difficulty of installation and maintenance. Summary of the Invention

[0005] In order to overcome the problems raised in the above background technology, the present invention provides a digitally controlled multi-way valve for oil field metering.

[0006] The technical implementation scheme of the present invention is: a numerically controlled multi-way valve for oil field metering, including a base, the base is fixedly connected to a liquid guide part, the liquid guide part is connected to a bypass channel, the upper side of the liquid guide part is fixedly connected to a connecting shell, the upper side of the connecting shell is fixedly connected to a mixed output outlet, one side of the connecting shell is fixedly connected to a sealing plate, the other side of the connecting shell is fixedly connected to a first fixed shell, the connecting shell is fixedly connected to several single well inlets, and a connecting component is arranged in the connecting shell, and the connecting component is used to connect all the single well inlets, the liquid guide part and the mixed output outlet.

[0007] Furthermore, the connecting component includes solenoid valves that are consistent with the sum of the number of all the single-well inlets, the liquid-guiding parts and the mixed-output outlets. All the solenoid valves are respectively fixedly connected and connected with the liquid-guiding parts, the mixed-output outlets and the adjacent single-well inlets. The opposite sides of the solenoid valves located on the liquid-guiding parts and the mixed-output outlets are fixedly connected and connected with a first connecting pipe. The solenoid valves located on the single-well inlet are fixedly connected and connected with a multi-way pipe. The opposite sides of all the first connecting pipes and all the multi-way pipes are commonly fixedly connected with a second fixed shell. A blocking component is provided in the second fixed shell. The blocking component is used to block the opposite sides of all the first connecting pipes and all the multi-way pipes.

[0008] Furthermore, the sealing assembly includes a rotating shell that is rotationally connected to the second fixed shell in a limited seal, the rotating shell is fixedly connected to the rotating shell, and the rotating shell is fixedly connected to the rotating shell and connected to a second connecting tube that is the same in number as the sum of the first connecting tube and the multi-way tube.

[0009] Furthermore, a first connecting piece is slidingly connected to the limiting seal in the second connecting tube, an elastic piece is fixed between the first connecting piece and the rotating shell, the first connecting piece close to the first connecting tube is used to connect the adjacent second connecting tube with the adjacent first connecting tube, and the first connecting piece close to the multi-way tube is used to connect the adjacent second connecting tube with the adjacent multi-way tube.

[0010] Furthermore, annular inclined surfaces are provided at both ends of the first connecting member.

[0011] Furthermore, the rotating shell is limited in rotation and connected to a turntable, the rotating shell is fixed with a first L-shaped frame that is evenly distributed and the same number as the second connecting tube, the first L-shaped frame is limited in sliding connection with a connecting pin fixed to the adjacent first connecting piece, the turntable is provided with evenly distributed inclined grooves that are the same number as the connecting pins, and the inclined grooves on the turntable are used to squeeze the adjacent connecting pins.

[0012] Furthermore, a first driving member is hinged between the turntable and the connecting shell.

[0013] Furthermore, the multi-way tube is slidably connected to a second connecting piece, a spring is fixed between the second connecting piece and the multi-way tube, the second connecting piece is fixed to the first fixed shell, a straight channel and an L-shaped channel are provided in the second connecting piece, the first fixed shell is fixed and connected to a well selection outlet, and the L-shaped channel is connected to the first fixed shell.

[0014] Furthermore, a second L-shaped frame is fixedly connected to the side of the second connecting member away from the first fixed shell, the isolation plate is fixedly connected to a fixed box, a second driving member is provided in the fixed box, a driving shaft of the second driving member passes through the isolation plate and rotates along it, the driving shaft of the second driving member is fixedly connected to a rotating frame located in the connecting shell, and the rotating frame is fixedly connected to an extrusion block for extruding the adjacent second L-shaped frame.

[0015] Furthermore, the cross section of the extrusion block is an isosceles trapezoid, so as to facilitate extrusion of the second L-shaped frame.

[0016] The present invention adopts multi-way valve integration technology to achieve the following technical effects by centrally integrating the fluid channels of multiple oil wells into a single valve body: Reduced space usage: Traditional decentralized valve groups require independent valves and manifolds for each well. This invention uses a centralized multi-way valve design to reduce the total equipment footprint, facilitating centralized management and operation. During use, only the required oil well needs to be selected through remote numerical control to achieve automatic switching, thus eliminating metering delays caused by manual intervention. When implementing well selection operations, a shared metering device is used instead of equipping each oil well with a complete metering system, thereby reducing equipment purchase and operation and maintenance expenses. When inspecting and repairing, dewaxing, producing tests or troubleshooting specific oil wells, the fluid transmission path of the target well can be isolated to achieve safe well shutdown, ensuring the continued production of non-target wells while ensuring operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixing box of the present invention.

[0019] Figure 3 It is a sectional view of the three-dimensional structure of the first fixed shell and the well selection outlet of the present invention.

[0020] Figure 4 It is a three-dimensional structural cross-sectional view of the connecting shell of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the first connecting pipe and the multi-way pipe of the present invention.

[0022] Figure 6 It is a three-dimensional structural diagram of the position relationship of the solenoid valve of the present invention.

[0023] Figure 7 It is an exploded view of the three-dimensional structure of the second fixed shell and the rotating shell of the present invention.

[0024] Figure 8 It is a three-dimensional structural schematic diagram of the positional relationship between the rotating shell and the rotating shell of the present invention.

[0025] Figure 9 It is a three-dimensional structural cross-sectional view of the turntable of the present invention.

[0026] Figure 10 It is an exploded view of the three-dimensional structure of the rotating shell and the rotating shell of the present invention.

[0027] Figure 11 It is a sectional view of the three-dimensional structure of the first connecting member of the present invention.

[0028] Figure 12 It is a three-dimensional structural cross-sectional view of the partition plate of the present invention.

[0029] Figure 13 It is a three-dimensional structural schematic diagram of the positional relationship between the rotating frame and the extrusion block of the present invention.

[0030] Figure 14 It is a three-dimensional structural schematic diagram of the positional relationship between the multi-way pipe and the second connecting piece of the present invention.

[0031] Figure 15 It is a sectional view of the three-dimensional structure of the second connecting piece of the present invention.

[0032] Figure numerals: 1, base, 2, liquid guiding part, 3, bypass channel, 4, connecting shell, 5, mixed output outlet, 6, partition plate, 7, first fixed shell, 8, well selection outlet, 9, single well inlet, 10, solenoid valve, 11, first connecting pipe, 12, multi-way pipe, 121, second fixed shell, 13, rotating shell, 14, rotating shell, 15, second connecting pipe, 16, first connecting part, 17, elastic part, 18, turntable, 19, first L-shaped frame, 20, connecting pin, 21, first driving part, 25, second connecting part, 26, straight channel, 27, L-shaped channel, 28, second L-shaped frame, 29, fixed box, 30, second driving part, 31, rotating frame, 32, extrusion block. DETAILED DESCRIPTION

[0033] Although the present invention may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the present invention.Any numerical designations such as first or second are merely exemplary and are not intended to limit the scope of the present invention in any way.

[0034] Example 1 This embodiment discloses a digitally controlled multi-way valve for oil field metering. Figures 1 to 5 , including a base 1, the base 1 is fixed with a liquid guide 2, the liquid guide 2 is connected with a bypass channel 3, the bypass channel 3 is used to discharge the fluid in the liquid guide 2, the upper side of the liquid guide 2 is fixed with a connecting shell 4, the upper side of the connecting shell 4 is fixed with a mixed output port 5, the process corresponding to the mixed output port 5 is a mixed transport operation, and the mixed transport operation refers to mixing the fluids of multiple oil wells (usually a multiphase flow composed of crude oil, associated gas and water) and transporting them through a unified pipeline (i.e., transported by the mixed output port 5). A sealing plate 6 is fixed to one side of the connecting shell 4, and a first fixed shell 7 is fixed to the other side of the connecting shell 4. The connecting shell 4 is fixed with several single well inlets 9. In the accompanying drawings, only six Taking a single well inlet 9 as an example, in actual use, the number of single well inlets 9 can be three to twenty. The device is provided with a remote control terminal, and all electrical components are electrically connected to the remote control terminal. A connecting component is provided in the connecting shell 4, and the connecting component is used to connect all single well inlets 9, liquid guiding parts 2 and mixed output outlets 5. The liquid guiding parts 2, mixed output outlets 5 and all single well inlets 9 are evenly distributed on the connecting shell 4, and the distances between two adjacent single well inlets 9, liquid guiding parts 2 and adjacent single well inlets 9 and the mixed output outlet 5 and adjacent single well inlets 9 are consistent. The device meets the working conditions of oil, gas and water, as well as the working conditions of high-pressure natural gas and no lubricating medium in the components.

[0035] Please refer to Figures 5 to 7 The connecting component includes solenoid valves 10, which is the same as the sum of the number of all single-well inlets 9, liquid guiding parts 2 and mixed output ports 5. All solenoid valves 10 are respectively fixedly connected and connected with the liquid guiding parts 2, the mixed output ports 5 and the adjacent single-well inlets 9. The opposite sides of the solenoid valves 10 located on the liquid guiding parts 2 and the mixed output ports 5 are fixedly connected and connected with the first connecting pipes 11. The solenoid valves 10 located on the single-well inlet 9 are fixedly connected and connected with the multi-way pipe 12. The opposite sides of all first connecting pipes 11 and all multi-way pipes 12 are commonly fixedly connected with a second fixed shell 121. A blocking component is provided in the second fixed shell 121. The blocking component is used to block the opposite sides of all first connecting pipes 11 and all multi-way pipes 12. The central axis of the second fixed shell 121 passes through the center of the circle formed by all first connecting pipes 11 and all multi-way pipes 12.

[0036] Please refer to Figures 7 to 11The sealing assembly includes a rotating shell 13 that is connected to the second fixed shell 121 in a limited sealing rotation (a sealing ring is provided between the second fixed shell 121 and the rotating shell 13 to prevent the inner side surface of the second fixed shell 121 and the inner side surface of the rotating shell 13 from wearing when the two rotate relative to each other). The front side of the second fixed shell 121 is provided with six evenly distributed arc-shaped sliding grooves. The rotating shell 13 is fixedly connected to the rotating shell 14. The central axis of the second fixed shell 121, the central axis of the rotating shell 13 and the central axis of the rotating shell 14 all coincide. The rotating shell 13 and the rotating shell 14 are fixedly connected and communicated with the first connecting pipe. 11 and the number of the multi-way tubes 12 are the same as the number of the second connecting tubes 15, and the second connecting tubes 15 are limitedly sealed and slidably connected with the first connecting piece 16. The first connecting piece 16 is fixedly connected to the rotating shell 13 with an elastic piece 17. The first connecting piece 16 close to the first connecting tube 11 is used to connect the adjacent second connecting tube 15 with the adjacent first connecting tube 11, and at this time the first connecting tube 11 and the adjacent first connecting piece 16 are in a sealed fit state. The first connecting piece 16 close to the multi-way tube 12 is used to connect the adjacent second connecting tube 15 with the adjacent multi-way tube 12, and at this time the multi-way tube 12 and the adjacent The first connecting piece 16 is in a sealed fit state, and the rotating shell 13 is fixed with six evenly distributed U-shaped blocks. The U-shaped block on the rotating shell 13 slides along the arc-shaped slide groove adjacent to the front side of the second fixed shell 121. Taking the arc-shaped slide groove on the upper side of the second fixed shell 121 as an example, when the U-shaped block on the upper side of the rotating shell 13 contacts the right part of the upper arc-shaped slide groove on the second fixed shell 121, the central axis of the upper second connecting tube 15 does not coincide with the central axis of the upper first connecting tube 11. When the U-shaped block on the upper side of the rotating shell 13 contacts the left part of the upper arc-shaped slide groove on the second fixed shell 121, the upper second connecting tube 15 is not coincident with the central axis of the upper first connecting tube 11. The central axis of the second connecting tube 15 coincides with the central axis of the upper first connecting tube 11. At this time, the upper second connecting tube 15 is connected to the upper first connecting tube 11, and the upper first connecting piece 16 can slide into the upper first connecting tube 11. At that time, the upper first connecting tube 11 is connected to the upper second connecting tube 15 through the adjacent first connecting piece 16, thereby completing the docking seal. The elastic piece 17 is a multi-stage spring telescopic rod. The elastic piece 17 is used to drive the adjacent first connecting piece 16 to reset. Both ends of the first connecting piece 16 are provided with annular inclined surfaces to ensure stable flow of the fluid.

[0037] Please refer to Figure 5 、 Figure 8 and Figure 9The rotating shell 13 is connected to a turntable 18 for limited rotation. The rotating shell 14 is fixed with a first L-shaped frame 19 that is evenly distributed and the same number as the second connecting tube 15. The first L-shaped frame 19 is limited and slidably connected with a connecting pin 20 that is fixed to the adjacent first connecting member 16. The turntable 18 is provided with evenly distributed inclined grooves that are the same number as the connecting pins 20. The inclined grooves on the turntable 18 are used to squeeze adjacent connecting pins 20. A first driving member 21 is hinged between the turntable 18 and the connecting shell 4. The first driving member 21 can be an electric push rod.

[0038] The above setting can be realized. When using this device, the staff controls the first driving member 21 through the remote control terminal to push out its telescopic part, so that the telescopic part of the first driving member 21 drives the turntable 18 to rotate counterclockwise (counterclockwise when viewed from front to back). The turntable 18 contacts the telescopic part of the corresponding connecting pin 20 through all the inclined grooves thereon (at this time, the elastic member 17 supports the first connecting member 16, so that the connecting pin 20 will not slide along the adjacent first L-shaped frame 19), thereby driving all the connecting pins 20 and all the first L-shaped frames 19 to rotate synchronously. During the rotation of all the first L-shaped frames 19, the rotating shell 14, all the second connecting tubes 15 and the rotating shell 13 and their attached parts are driven to rotate counterclockwise.

[0039] When the rotating shell 13 rotates until the central axes of all the second connecting tubes 15 coincide with the central axes of the corresponding first connecting tubes 11 and the corresponding multi-way tubes 12, the rotating shell 13 and its accessory parts stop rotating. At this time, the telescopic end of the first driving member 21 continues to extend, and the turntable 18 continues to rotate and squeezes the corresponding connecting pins 20 through all the inclined grooves thereon, so that the connecting pins 20 drive the adjacent first connecting member 16 to slide to the side away from the central axis of the rotating shell 13 (the telescopic part of the elastic member 17 is squeezed during the movement of the first connecting member 16).

[0040] During the movement of the first connecting piece 16, it is inserted into the corresponding first connecting pipe 11 or multi-way pipe 12 to establish a connection between the first connecting pipe 11 or multi-way pipe 12 and the second connecting pipe 15, so that the first connecting pipe 11 or multi-way pipe 12 can be connected to the rotating shell 14 through the corresponding second connecting pipe 15. By sliding out the above-mentioned first connecting piece 16, a "connecting pipe" is established between the two sections of the pipeline to facilitate the subsequent flow and transportation of the fluid and enhance the stability during the fluid transportation process.

[0041] When the connecting pin 20 moves to fit into the side of the adjacent inclined groove on the turntable 18 away from the central axis of the turntable 18, the first connecting member 16 has slid into between the first connecting pipe 11 or the multi-way pipe 12 and the second connecting pipe 15. At this time, the first driving member 21 stops working. Through the above actions, the preparation process before fluid transportation in the oil well is completed.

[0042] After completing the preparations for fluid transportation in the oil wells, the staff opens the remaining solenoid valves 10 except the one connected to the liquid guide member 2 through the remote control terminal, so that the first connecting pipe 11 on the upper side is connected to the mixed output outlet 5 through the solenoid valve 10, and the multi-way pipe 12 is connected to the single well inlet 9 through the solenoid valve 10. The fluids in the six oil wells enter the rotating shell 14 through the single well inlet 9, the solenoid valve 10, the multi-way pipe 12, the first connecting member 16 and the second connecting pipe 15 respectively, so that the liquid level of the fluid in the rotating shell 14 gradually rises (when the fluid flows through the annular inclined surface on the first connecting member 16, the pressure fluctuation of the fluid is reduced, so that the fluid flows smoothly through the first connecting member 16).

[0043] As the fluid continues to be injected, the fluid in the rotating shell 14 flows into the mixed output port 5 through the second connecting pipe 15 on the upper side, the first connecting piece 16 on the upper side, the first connecting pipe 11 on the upper side, and the solenoid valve 10 on the upper side. The mixed output port 5 then transports the fluid to a downstream processing system (such as a joint station or a processing plant). This is a mixed delivery operation.

[0044] After the fluid transportation is completed, the staff closes the solenoid valves 10 except the solenoid valve 10 on the lower side through the remote control terminal, and then opens the solenoid valve 10 on the lower side through the remote control terminal, so that the rotating shell 13 is connected to the liquid guiding member 2 through the second connecting pipe 15 on the lower side and the first connecting member 16 on the lower side, thereby allowing the remaining fluid in the rotating shell 13 and the impurities (solid medium) in the fluid to flow into the liquid guiding member 2 through the above-mentioned parts and be discharged from the bypass channel 3.

[0045] After the remaining fluid in the rotating shell 13 is drained, the staff can close the lower solenoid valve 10 through the remote control terminal.

[0046] When it is no longer necessary to transport the fluid, the staff controls the retractable portion of the first driving member 21 through the control terminal to retract, causing the turntable 18 to rotate in the opposite direction. With the first connecting member 16 still inserted into the first connecting tube 11 or the multi-way tube 12, the rotating shell 13 and its accessory parts will not rotate in the opposite direction at this time. During the reverse rotation of the turntable 18, all the inclined grooves thereon reversely squeeze the adjacent connecting pins 20, causing the connecting pins 20 to move along the adjacent first L-shaped frame 19 toward the direction close to the central axis of the rotating shell 14, and the connecting pins 20 drive the adjacent first connecting member 16 to move in the direction of the central axis of the rotating shell 14 (the retractable portion of the elastic member 17 is reset during this process).

[0047] When the connecting pin 20 slides to the side of the inclined groove on the turntable 18 close to the central axis of the turntable 18, the first connecting piece 16 has retracted into the adjacent second connecting tube 15 and is no longer in contact with the first connecting tube 11 or the multi-way tube 12. Subsequently, the turntable 18 continues to reverse, so that the turntable 18 drives the rotating shell 13 to rotate in the opposite direction along the second fixed shell 121 through its upper inclined groove, connecting pin 20, first connecting piece 16 and second connecting tube 15. At this time, the central axes of all second connecting tubes 15 no longer coincide with the central axes of the corresponding first connecting tube 11 and the corresponding multi-way tube 12, and the above parts rotate to Figure 6 After the state is reached, the first driving member 21 stops working. After the above work, the bypass channel 3, the mixed output outlet 5 or the single well inlet 9 is blocked once through the solenoid valve 10, and then the overall connection of all the bypass channels 3, the mixed output outlet 5 and the single well inlet 9 is disconnected by rotating the rotating shell 13 and its accessory parts to achieve the effect of secondary blocking.

[0048] Well selection operation (wellhead switching) refers to the operation process of selecting the fluid (crude oil, natural gas or water) of a specific oil well to access the metering system (such as flow meter, separator, etc.) through the valve combination in the valve group, while isolating other oil wells. Typical scenarios: for example, when the metering station needs to measure the production of wells A, B and C in turn, it is necessary to switch to the target wells one by one through the valve group. The purpose of the operation is to achieve multi-well time-sharing metering. However, the present invention avoids the need to configure a full set of metering devices for each well by sharing metering equipment, reducing equipment investment and maintenance costs. In addition, when a single well is repaired, paraffin cleaned, tested or troubleshooted, the target oil well is closed by cutting off the fluid channel, ensuring normal production of other wells while ensuring operational safety.

[0049] Example 2 This embodiment discloses a digitally controlled multi-way valve for oilfield metering, which is further improved on the basis of the first embodiment.

[0050] Please refer to Figure 2 and Figures 12 to 15, the multi-way tube 12 is slidably connected with a second communicating piece 25, a spring is fixed between the second communicating piece 25 and the multi-way tube 12, the second communicating piece 25 is fixed to the first fixed shell 7, a straight-line channel 26 and an L-shaped channel 27 are provided in the second communicating piece 25, the first fixed shell 7 is fixed and connected with the well selection outlet 8, the L-shaped channel 27 is communicated with the first fixed shell 7, the straight-line channel 26 is used to connect the multi-way tube 12 and the adjacent first communicating piece 16, the L-shaped channel 27 is used to connect the multi-way tube 12 and the first fixed shell 7, the second communicating piece 25 is composed of a sliding portion and a corrugated portion, the corrugated portion of the second communicating piece 25 is fixed and connected with the first fixed shell 7, the sliding portion of the second communicating piece 25 slides back and forth along the adjacent multi-way tube 12, when in mixed transmission operation, the multi-way tube 12 transports the fluid flowing therein through the straight-line channel 26, when in well selection operation, the multi-way tube 12 The fluid flowing through it is transported through the L-shaped channel 27. A second L-shaped frame 28 is fixedly connected to the side of the second connecting member 25 away from the first fixed shell 7. The baffle plate 6 is fixedly connected to a fixed box 29. A second driving member 30 is provided in the fixed box 29. The driving shaft of the second driving member 30 passes through the baffle plate 6 and rotates along it. The driving shaft of the second driving member 30 is fixedly connected to a rotating frame 31 located in the connecting shell 4. The rotating frame 31 is fixedly connected to an extrusion block 32 for extruding the adjacent second L-shaped frame 28. The second driving member 30 is a single-axis motor. The rotating frame 31 consists of a U-shaped frame and an annular frame fixed to each other. The annular frame in the rotating frame 31 is fixedly connected to the extrusion block 32. The cross-section of the extrusion block 32 is an isosceles trapezoid, so as to facilitate the extrusion of the adjacent second L-shaped frame 28. The second L-shaped frame 28 is squeezed by the extrusion block 32, so that the second L-shaped frame 28 moves backward along the edge of the extrusion block 32.

[0051] The above arrangement can be realized. Before performing the well selection operation, the staff controls the driving shaft of the second driving member 30 to rotate through the control terminal. The driving shaft of the second driving member 30 drives the extrusion block 32 to rotate through the rotating frame 31. The extrusion block 32 approaches the single well inlet 9 where the well selection needs to be performed. When the extrusion block 32 contacts the second L-shaped frame 28 corresponding to the single well inlet 9, it squeezes it toward the rear side, so that the second L-shaped frame 28 drives the sliding part of the adjacent second connecting member 25 to move backward (the adjacent spring is squeezed during the movement of the sliding part of the second connecting member 25). At this time, the corrugated part of the second connecting member 25 is stretched.

[0052] When the rear portion of the second L-shaped frame 28 is in contact with the extrusion block 32, the L-shaped channel 27 is connected to the adjacent multi-way pipe 12. The fluid is then delivered from the single-well inlet 9 to the multi-way pipe 12 through the solenoid valve 10. The fluid is then delivered from the L-shaped channel 27 to the first fixed housing 7 and finally discharged from the well selection outlet 8, thereby completing the well selection and post-well fluid delivery process. (When the well selection operation is no longer required, the drive shaft of the second driving member 30 drives the rotating frame 31 and the extrusion block 32 to move until the extrusion block 32 no longer squeezes the second L-shaped frame 28. The second L-shaped frame 28 and the second connecting member 25 are then reset by the action of their adjacent springs, so that the straight channel 26 is reconnected to the adjacent multi-way pipe 12.)

[0053] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for those skilled in the art, based on the idea of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A numerically controlled multi-way valve for oilfield metering, characterized by: The invention comprises a base (1), wherein the base (1) is fixedly connected to a liquid guide member (2), the liquid guide member (2) is connected to a bypass channel (3), the upper side of the liquid guide member (2) is fixedly connected to a connecting shell (4), the upper side of the connecting shell (4) is fixedly connected to a mixed output outlet (5), one side of the connecting shell (4) is fixedly connected to a sealing plate (6), the other side of the connecting shell (4) is fixedly connected to a first fixed shell (7), the connecting shell (4) is fixedly connected to a plurality of single well inlets (9), and a connecting assembly is provided in the connecting shell (4), the connecting assembly is used to connect all the single well inlets (9), the liquid guide member (2) and the mixed output outlet (5).

2. The numerically controlled multi-way valve for oilfield metering according to claim 1, characterized in that: The connecting component includes solenoid valves (10) whose number is the same as the sum of the number of all the single-well inlets (9), the liquid-guiding parts (2) and the mixed-output outlets (5). All the solenoid valves (10) are respectively fixedly connected to and communicated with the liquid-guiding parts (2), the mixed-output outlets (5) and the adjacent single-well inlets (9). The facing sides of the solenoid valves (10) located on the liquid-guiding parts (2) and the mixed-output outlets (5) are fixedly connected to and communicated with a first connecting pipe (11). The solenoid valves (10) located on the single-well inlet (9) are fixedly connected to and communicated with a multi-way pipe (12). The facing sides of all the first connecting pipes (11) and all the multi-way pipes (12) are fixedly connected to a second fixed shell (121). A blocking component is provided in the second fixed shell (121). The blocking component is used to block the facing sides of all the first connecting pipes (11) and all the multi-way pipes (12).

3. The numerically controlled multi-way valve for oilfield metering according to claim 2, characterized in that: The blocking assembly comprises a rotating shell (13) connected to the second fixed shell (121) in a position-limiting sealing manner, the rotating shell (13) being fixedly connected to the rotating shell (14), and the rotating shell (13) and the rotating shell (14) being fixedly connected and communicated with second connecting tubes (15) whose number is the same as the sum of the number of the first connecting tubes (11) and the multi-way tubes (12).

4. The numerically controlled multi-way valve for oilfield metering according to claim 3, characterized in that: A first connecting piece (16) is slidingly connected to the second connecting pipe (15) in a position-limiting seal, and an elastic piece (17) is fixedly connected between the first connecting piece (16) and the rotating shell (13). The first connecting piece (16) close to the first connecting pipe (11) is used to connect the adjacent second connecting pipe (15) with the adjacent first connecting pipe (11), and the first connecting piece (16) close to the multi-way pipe (12) is used to connect the adjacent second connecting pipe (15) with the adjacent multi-way pipe (12).

5. The numerically controlled multi-way valve for oilfield metering according to claim 4, characterized in that: Both ends of the first connecting member (16) are provided with annular inclined surfaces.

6. The numerically controlled multi-way valve for oilfield metering according to claim 4, characterized in that: The rotating shell (13) is connected to a rotating disk (18) in a limited rotation manner, the rotating shell (14) is fixedly connected to first L-shaped frames (19) that are evenly distributed and the same in number as the second connecting tubes (15), the first L-shaped frames (19) are connected to connecting pins (20) fixed to adjacent first connecting members (16) in a limited sliding manner, the rotating disk (18) is provided with evenly distributed inclined grooves that are the same in number as the connecting pins (20), and the inclined grooves on the rotating disk (18) are used to squeeze adjacent connecting pins (20).

7. The numerically controlled multi-way valve for oilfield metering according to claim 6, characterized in that: A first driving member (21) is hingedly connected between the rotating disk (18) and the connecting shell (4).

8. The numerically controlled multi-way valve for oilfield metering according to claim 3, characterized in that: The multi-way tube (12) is slidably connected to a second connecting piece (25), a spring is fixedly connected between the second connecting piece (25) and the multi-way tube (12), the second connecting piece (25) is fixedly connected to the first fixed shell (7), a straight-line channel (26) and an L-shaped channel (27) are provided in the second connecting piece (25), the first fixed shell (7) is fixedly connected and connected to a well selection outlet (8), and the L-shaped channel (27) is connected to the first fixed shell (7).

9. The numerically controlled multi-way valve for oilfield metering according to claim 8, characterized in that: A second L-shaped frame (28) is fixedly connected to the side of the second connecting member (25) away from the first fixed shell (7), the sealing plate (6) is fixedly connected to a fixed box (29), a second driving member (30) is arranged in the fixed box (29), the driving shaft of the second driving member (30) passes through the sealing plate (6) and rotates along it, the driving shaft of the second driving member (30) is fixedly connected to a rotating frame (31) located in the connecting shell (4), and the rotating frame (31) is fixedly connected to an extrusion block (32) for extruding the adjacent second L-shaped frame (28).

10. The numerically controlled multi-way valve for oilfield metering according to claim 9, characterized in that: The cross section of the extrusion block (32) is an isosceles trapezoid, so as to facilitate extrusion of the second L-shaped frame (28).

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