Numerical control multi-way valve for oil field metering

Abstract

This invention belongs to the field of oilfield metering technology, specifically relating to a CNC multi-port valve for oilfield metering. It includes a base, a fluid guide fixedly connected to the base, the fluid guide connected to a bypass channel, a connecting shell fixedly connected to the upper side of the fluid guide, a mixing outlet fixedly connected to the upper side of the connecting shell, a sealing plate fixedly connected to one side of the connecting shell, a first fixed shell fixedly connected to the other side of the connecting shell, and several single-well inlets fixedly connected to the connecting shell. A connecting component is disposed within the connecting shell, connecting all the single-well inlets, the fluid guide, and the mixing outlet. This invention, through a centralized multi-port valve design, reduces the total equipment footprint compared to traditional decentralized valve groups, facilitating centralized management and operation. In use, automatic switching can be achieved simply by remotely selecting the required oil well via CNC, thereby eliminating metering delays caused by manual intervention.

Description

Technical Field

[0001] This invention belongs to the field of oilfield metering technology, and specifically relates to a numerically controlled multi-way valve for oilfield metering. Background Technology

[0002] Oilfield metering valve assemblies are key equipment used in oil and gas field development for the collection and metering of fluids (crude oil, natural gas, etc.) from oil wells. Their main functions include:

[0003] Multi-well fluid switching: By switching the opening and closing states of valve combinations, different well fluids can be connected or isolated, supporting patrol metering;

[0004] System safety isolation: During equipment maintenance, troubleshooting, or wellhead operations, disconnect the target well from downstream pipelines to prevent fluid leakage or cross-contamination.

[0005] Traditional oilfield metering valve assemblies mainly consist of the following parts:

[0006] Valve body and valve core: As the core components of the fluid passage, the valve core switches the position of the valve core in the valve seat to realize the flow of fluid (such as gate valve and ball valve).

[0007] Valve operating mechanism: usually a manual operating device (such as a handwheel or handle), which relies on manual control of the opening and closing of the valve;

[0008] Manifold system: A network of multi-way connectors (tees, crosses, etc.) and pipelines used to connect multiple oil wells with metering equipment such as separators and flow meters to form a fluid transmission path.

[0009] In practical applications in oil fields, traditional valve groups suffer from the following technical defects, which restrict metering efficiency and system reliability:

[0010] Low operational efficiency: When multiple wells need to be switched, multiple valves need to be manually operated one by one, resulting in long overall operation time and potential delays due to repetitive manual intervention (in case of emergencies, such as abnormal pressure requiring emergency switching or closure of wellheads, a linear process of "detecting abnormality → reporting → decision → manual operation one by one" is required, which significantly prolongs the response time).

[0011] Space and integration limitations: Each well requires separate valves, manifolds, and isolation devices, resulting in a large footprint, complex layout, and increased difficulty in installation and maintenance. Summary of the Invention

[0012] In order to overcome the problems mentioned in the background art, the present invention provides a numerically controlled multi-way valve for oilfield metering.

[0013] The technical implementation scheme of the present invention is as follows: a CNC multi-port valve for oilfield metering includes a base, a liquid guiding component fixedly connected to the base, a bypass channel connected to the liquid guiding component, a connecting shell fixedly connected to the upper side of the liquid guiding component, a mixing outlet fixedly connected to the upper side of the connecting shell, a sealing plate fixedly connected to one side of the connecting shell, a first fixing shell fixedly connected to the other side of the connecting shell, a plurality of single well inlets fixedly connected to the connecting shell, and a connecting component provided inside the connecting shell, the connecting component being used to connect all the single well inlets, the liquid guiding component, and the mixing outlet.

[0014] Furthermore, the communication assembly includes solenoid valves whose number is the same as the sum of the number of all the single well inlets, the fluid guides, and the mixing outlets. All the solenoid valves are fixedly connected to and connected to the fluid guides, the mixing outlets, and the adjacent single well inlets, respectively. The opposing sides of the solenoid valves located on the fluid guides and the mixing outlets are fixedly connected to and connected to first connecting pipes. The solenoid valves located on the single well inlets are fixedly connected to and connected to multi-port pipes. The opposing sides of all the first connecting pipes and all the multi-port pipes are jointly fixedly connected to a second fixed housing. A sealing assembly is provided inside the second fixed housing. The sealing assembly is used to seal the opposing sides of all the first connecting pipes and all the multi-port pipes.

[0015] Furthermore, the sealing assembly includes a rotating shell that is rotatably and sealingly connected to the second fixed shell, the rotating shell being fixedly connected to a rotating shell, and a second connecting pipe being fixedly connected to and communicating with the rotating shell and the rotating shell, the number of which is the same as the sum of the number of the first connecting pipe and the multi-port pipe.

[0016] Furthermore, the second connecting pipe is slidably connected with a first connecting member, and an elastic member is fixedly connected between the first connecting member and the rotating shell. The first connecting member near the first connecting pipe is used to connect the adjacent second connecting pipe to the adjacent first connecting pipe, and the first connecting member near the multi-port pipe is used to connect the adjacent second connecting pipe to the adjacent multi-port pipe.

[0017] Furthermore, both ends of the first connecting member are provided with annular inclined surfaces.

[0018] Furthermore, the rotating shell is rotatably connected to a turntable, and the rotating shell is fixedly connected to a first L-shaped frame that is evenly distributed and has the same number as the second connecting tubes. The first L-shaped frame is slidably connected to a connecting pin that is fixedly connected to the adjacent first connecting member. The turntable is provided with inclined grooves that are evenly distributed and have the same number as the connecting pins. The inclined grooves on the turntable are used to press the adjacent connecting pins.

[0019] Furthermore, a first driving member is hinged between the turntable and the connecting shell.

[0020] Furthermore, the multi-port pipe is slidably connected to a second connecting member, and a spring is fixedly connected between the second connecting member and the multi-port pipe. The second connecting member is fixedly connected to the first fixed shell, and a straight channel and an L-shaped channel are provided inside the second connecting member. The first fixed shell is fixedly connected to and connected to a well outlet, and the L-shaped channel is connected to the first fixed shell.

[0021] Furthermore, a second L-shaped frame is fixedly connected to the side of the second connecting member away from the first fixed shell, a fixed box is fixedly connected to the partition plate, a second driving member is provided inside the fixed box, the driving shaft of the second driving member passes through the partition plate and rotates along it, the driving shaft of the second driving member is fixedly connected to a rotating frame located inside the connecting shell, and a pressing block for pressing the adjacent second L-shaped frame is fixedly connected to the rotating frame.

[0022] Furthermore, the cross-section of the extrusion block is an isosceles trapezoid to facilitate the extrusion of the second L-shaped frame.

[0023] This invention employs multi-port valve integration technology, which integrates the fluid channels of multiple oil wells into a single valve body, achieving the following technical effects:

[0024] Reduced space occupation: Traditional decentralized valve groups require independent valves and manifolds for each well, while this invention reduces the total footprint of the equipment through a centralized multi-way valve design, which facilitates centralized management and operation. In use, the required oil well can be selected remotely via CNC to achieve automatic switching, thereby eliminating metering delays caused by manual intervention.

[0025] When implementing well selection operations, a shared metering device is used instead of equipping each oil well with a separate complete metering system. This reduces equipment purchase and maintenance expenses. When performing maintenance, dewaxing, production testing, or troubleshooting on a specific oil well, the well can be safely shut down by isolating the fluid transmission path of the target well. This ensures the safety of operations while guaranteeing continuous production of non-target wells. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 2 This is a three-dimensional structural diagram of the fixing box of the present invention.

[0028] Figure 3 This is a three-dimensional structural cross-sectional view of the first fixed shell and well outlet of the present invention.

[0029] Figure 4 This is a three-dimensional structural cross-sectional view of the connecting shell of the present invention.

[0030] Figure 5This is a three-dimensional structural diagram of the first connecting pipe and the multi-port pipe of the present invention.

[0031] Figure 6 This is a three-dimensional structural diagram showing the positional relationship of the solenoid valve of the present invention.

[0032] Figure 7 This is an exploded three-dimensional view of the second fixed shell and rotating shell of the present invention.

[0033] Figure 8 This is a three-dimensional structural diagram showing the positional relationship between the rotating shell and the rotating housing of the present invention.

[0034] Figure 9 This is a three-dimensional structural cross-sectional view of the turntable of the present invention.

[0035] Figure 10 This is an exploded three-dimensional view of the rotating shell and the rotating shell structure of the present invention.

[0036] Figure 11 This is a three-dimensional structural cross-sectional view of the first connecting member of the present invention.

[0037] Figure 12 This is a three-dimensional structural cross-sectional view of the septum of the present invention.

[0038] Figure 13 This is a three-dimensional structural diagram showing the positional relationship between the rotating frame and the extrusion block of the present invention.

[0039] Figure 14 This is a three-dimensional structural diagram showing the positional relationship between the multi-port pipe and the second connecting member of the present invention.

[0040] Figure 15 This is a three-dimensional structural cross-sectional view of the second connecting member of the present invention.

[0041] Reference numerals: 1. Base, 2. Fluid guide, 3. Bypass channel, 4. Connecting shell, 5. Mixing outlet, 6. Separator, 7. First fixed shell, 8. Well outlet, 9. Single well inlet, 10. Solenoid valve, 11. First connecting pipe, 12. Multi-port pipe, 121. Second fixed shell, 13. Rotating shell, 14. Rotating shell, 15. Second connecting pipe, 16. First connecting component, 17. Elastic component, 18. Turntable, 19. First L-shaped frame, 20. Connecting pin, 21. First driving component, 25. Second connecting component, 26. Straight channel, 27. L-shaped channel, 28. Second L-shaped frame, 29. Fixed box, 30. Second driving component, 31. Rotating frame, 32. Extrusion block. Detailed Implementation

[0042] Although the invention may be described with respect to specific applications or industries, those skilled in the art will recognize its broader applicability. Any numerical designations such as "first" or "second" are merely illustrative and are not intended to limit the scope of the invention in any way.

[0043] Example 1

[0044] This embodiment discloses a numerically controlled multi-way valve for oilfield metering. Please refer to... Figures 1-5 The system includes a base 1, a fluid guide 2 fixedly connected to the base 1, a bypass channel 3 connected to the fluid guide 2 for discharging fluid from the fluid guide 2, a connecting shell 4 fixedly connected to the upper side of the fluid guide 2, a mixing outlet 5 fixedly connected to the upper side of the connecting shell 4, and the process corresponding to the mixing outlet 5 is the mixing and transportation operation, which refers to mixing the fluids (usually a multiphase flow composed of crude oil, associated gas, and water) from multiple oil wells and then transporting them through a unified pipeline (i.e., transported through the mixing outlet 5). A sealing plate 6 is fixedly connected to one side of the connecting shell 4, a first fixed shell 7 is fixedly connected to the other side of the connecting shell 4, and several single-well inlets 9 are fixedly connected to the connecting shell 4. In the attached diagram, only six are shown. Taking a single well inlet 9 as an example, in actual use, the number of single well inlets 9 can be three to twenty. This device is equipped with a remote control terminal, and all electrical components are electrically connected to the remote control terminal. A connecting component is provided inside the connecting shell 4. The connecting component is used to connect all single well inlets 9, liquid guiding components 2 and mixing outlets 5. Liquid guiding components 2, mixing outlets 5 and all single well inlets 9 are evenly distributed on the connecting shell 4, and the distance between two adjacent single well inlets 9, liquid guiding components 2 and adjacent single well inlets 9 and mixing outlets 5 and adjacent single well inlets 9 is consistent. This device can meet the working conditions of oil, gas and water, as well as high-pressure natural gas, and the working condition of no lubricating medium in the components.

[0045] Please refer to Figures 5-7 The connecting components include solenoid valves 10, which are equal in number to the sum of all single well inlets 9, liquid guides 2, and mixing outlets 5. All solenoid valves 10 are fixedly connected to and connected to the liquid guides 2, the mixing outlets 5, and the adjacent single well inlets 9, respectively. The opposing sides of the solenoid valves 10 on the liquid guides 2 and the mixing outlets 5 are fixedly connected to and connected to first connecting pipes 11. The solenoid valves 10 on the single well inlets 9 are fixedly connected to and connected to multi-port pipes 12. The opposing sides of all first connecting pipes 11 and all multi-port pipes 12 are jointly fixedly connected to a second fixed housing 121. A sealing component is provided inside the second fixed housing 121. The sealing component is used to seal the opposing sides of all first connecting pipes 11 and all multi-port pipes 12. The central axis of the second fixed housing 121 passes through the center of the circle formed by all first connecting pipes 11 and all multi-port pipes 12.

[0046] Please refer to Figures 7-11The sealing assembly includes a rotating shell 13 that is rotatably and sealingly connected to the second fixed shell 121 (a sealing ring is provided between the second fixed shell 121 and the rotating shell 13 to prevent wear between the inner surfaces of the second fixed shell 121 and the rotating shell 13 when they rotate relative to each other). The front side of the second fixed shell 121 has six evenly distributed arc-shaped grooves. A rotating shell 14 is fixedly connected to the rotating shell 13. The central axes of the second fixed shell 121, the rotating shell 13, and the rotating shell 14 all coincide. The rotating shell 13 and the rotating shell 14 are fixedly connected and communicate with a first connecting pipe. The number of second connecting pipes 11 and 12 is the same as the sum of the number of second connecting pipes 15 and 12. A first connecting member 16 is slidably connected within the second connecting pipe 15, and an elastic member 17 is fixedly connected between the first connecting member 16 and the rotating shell 13. The first connecting member 16 near the first connecting pipe 11 connects the adjacent second connecting pipe 15 to the adjacent first connecting pipe 11, and at this time, the first connecting pipe 11 and the adjacent first connecting member 16 are in a sealed fit. The first connecting member 16 near the 12 connects the adjacent second connecting pipe 15 to the adjacent 12, and at this time, the 12 connects the adjacent second connecting pipe 15 to the adjacent 12. The first connecting piece 16 is in a sealed and fitted state. The rotating shell 13 is fixed with six evenly distributed U-shaped blocks. The U-shaped blocks on the rotating shell 13 slide along the adjacent arc-shaped grooves on the front side of the second fixed shell 121. Taking the upper arc-shaped groove on the second fixed shell 121 as an example, when the upper U-shaped block of the rotating shell 13 contacts the right side of the upper arc-shaped groove on the second fixed shell 121, the central axis of the upper second connecting pipe 15 does not coincide with the central axis of the upper first connecting pipe 11. When the upper U-shaped block of the rotating shell 13 contacts the left side of the upper arc-shaped groove on the second fixed shell 121, the upper first connecting pipe 15... The central axis of the second connecting pipe 15 coincides with the central axis of the first connecting pipe 11 on the upper side. At this time, the second connecting pipe 15 on the upper side is connected to the first connecting pipe 11 on the upper side, and the first connecting piece 16 on the upper side can slide into the first connecting pipe 11 on the upper side. At that time, the first connecting pipe 11 on the upper side is connected to the second connecting pipe 15 on the upper side through the adjacent first connecting piece 16, thereby completing the docking seal. The elastic element 17 is a multi-stage spring telescopic rod. The elastic element 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 stabilize the flow of fluid.

[0047] Please refer to Figure 5 , Figure 8 and Figure 9The rotating shell 13 is rotatably connected to the turntable 18. The rotating shell 14 is fixedly connected to the first L-shaped frame 19, which is evenly distributed and has the same number as the second connecting pipe 15. The first L-shaped frame 19 is slidably connected to the connecting pin 20, which is fixedly connected to the adjacent first connecting member 16. The turntable 18 is provided with inclined grooves that are evenly distributed and have the same number as the connecting pin 20. The inclined grooves on the turntable 18 are used to press the adjacent connecting pin 20. The turntable 18 and the connecting shell 4 are hinged to the first driving member 21, which can be an electric push rod.

[0048] The above settings enable that, when using this device, the operator can remotely control the first drive component 21 to extend its telescopic part, causing the telescopic part of the first drive component 21 to drive the turntable 18 to rotate counterclockwise (counterclockwise rotation when viewed from front to back). The turntable 18 contacts the telescopic part of the corresponding connecting pin 20 through all its inclined slots (at this time, the support of the first connecting component 16 by the elastic element 17 prevents the connecting pin 20 from sliding 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 pipes 15 and the rotating shell 13 and their auxiliary parts to rotate counterclockwise.

[0049] When the rotating shell 13 rotates until the central axis of all the second connecting pipes 15 coincides with the central axis of the corresponding first connecting pipe 11 and the corresponding multi-port pipe 12, the rotating shell 13 and its auxiliary 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 presses the corresponding connecting pin 20 through all the inclined grooves on it, so that the connecting pin 20 drives the adjacent first connecting member 16 to slide away from the central axis of the rotating shell 13 (the first connecting member 16 presses the telescopic part of the elastic member 17 during the movement).

[0050] During the movement of the first connecting member 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. This allows the first connecting pipe 11 or multi-way pipe 12 to communicate with the rotating shell 14 through the corresponding second connecting pipe 15. By sliding out the first connecting member 16, a "connecting pipe" is established between the two pipe sections to facilitate the subsequent flow and transportation of fluid and enhance the stability of the fluid transportation process.

[0051] When the connecting pin 20 moves to fit against 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 the space between the first connecting pipe 11 or the multi-way pipe 12 and the second connecting pipe 15. At that time, the first driving member 21 stops working. Through the above actions, the preparation process before fluid transportation in the oil well is completed.

[0052] After completing the preparations for fluid transfer within the oil wells, the staff opens the remaining solenoid valves 10 (except for those connected to the fluid guide 2) via a remote control terminal. This allows the first connecting pipe 11 on the upper side to connect to the mixing outlet 5 through the solenoid valve 10, and the multi-way pipe 12 to connect to the single well inlet 9 through the solenoid valve 10. The fluids from the six oil wells enter the rotating shell 14 through the single well inlet 9, solenoid valve 10, multi-way pipe 12, first connecting pipe 16, and second connecting pipe 15, respectively. This causes the fluid level in the rotating shell 14 to gradually rise (as the fluid flows through the annular inclined surface on the first connecting pipe 16, the pressure fluctuation of the fluid is reduced, allowing the fluid to flow smoothly through the first connecting pipe 16).

[0053] As the fluid continues to be injected, the fluid inside the rotating shell 14 flows into the mixing outlet 5 through the upper second connecting pipe 15, the upper first connecting piece 16, the upper first connecting pipe 11, and the upper solenoid valve 10. The fluid is then transported to the downstream processing system (such as a combined station or treatment plant) through the mixing outlet 5. This is called the mixing operation.

[0054] After the fluid transfer is completed, the operator closes all solenoid valves except for the lower solenoid valve 10 via a remote control terminal. Then, the operator opens the lower solenoid valve 10 via the remote control terminal, so that the rotating shell 13 is connected to the liquid guide 2 through the lower second connecting pipe 15 and the lower first connecting member 16. This allows the remaining fluid in the rotating shell 13 and impurities (solid media) in the fluid to flow into the liquid guide 2 through the above-mentioned parts and be discharged through the bypass channel 3.

[0055] After the remaining fluid inside the rotating housing 13 is emptied, the operator can close the lower solenoid valve 10 via a remote control terminal.

[0056] When fluid delivery is no longer needed, the operator controls the telescopic part of the first drive component 21 to retract via the control terminal, causing the turntable 18 to rotate in the opposite direction. With the first connecting component 16 still inserted into the first connecting pipe 11 or the multi-port pipe 12, the rotating shell 13 and its associated parts will not rotate in the opposite direction. During the reverse rotation of the turntable 18, all the inclined grooves on it press against the adjacent connecting pins 20, causing the connecting pins 20 to move along the adjacent first L-shaped frame 19 towards the central axis of the rotating shell 14. The connecting pins 20 drive the adjacent first connecting component 16 to move towards the central axis of the rotating shell 14 (during this process, the telescopic part of the elastic component 17 resets).

[0057] When the connecting pin 20 slides to the side of the inclined groove on the turntable 18 near the central axis of the turntable 18, the first connecting member 16 has retracted into the adjacent second connecting pipe 15 and is no longer in contact with the first connecting pipe 11 or the multi-port pipe 12. Subsequently, the turntable 18 continues to rotate in reverse, causing the turntable 18 to drive the rotating shell 13 to rotate in the opposite direction along the second fixed shell 121 through its inclined groove, connecting pin 20, first connecting member 16 and second connecting pipe 15. At this time, the central axes of all the second connecting pipes 15 no longer coincide with the central axes of the corresponding first connecting pipes 11 and the corresponding multi-port pipes 12, and the above parts rotate to... Figure 6 After the state is reached, the first drive component 21 stops working. After the above work, the bypass channel 3, the mixed output port 5 or the single well inlet 9 is blocked by the solenoid valve 10. Then, by rotating the rotating shell 13 and its auxiliary parts, the overall connection of all bypass channels 3, mixed output ports 5 and single well inlets 9 is disconnected to achieve the effect of secondary blocking.

[0058] Well selection operation (wellhead switching) refers to the process of selecting a specific well's fluid (crude oil, natural gas, or water) to be connected to the metering system (such as flow meters, separators, etc.) through a valve combination in a valve group, while isolating other wells. A typical scenario is that when a metering station needs to meter the production of wells A, B, and C in turn, it needs to switch to the target well one by one through the valve group. The purpose of this operation is to achieve multi-well time-sharing metering. However, this invention avoids configuring a complete set of metering devices for each well separately by sharing metering equipment, reducing equipment investment and maintenance costs. Furthermore, when a single well is being repaired, dewaxed, tested, or troubleshooting, the target well can be shut down by cutting off the fluid channel, ensuring normal production of other wells while guaranteeing operational safety.

[0059] Example 2

[0060] This embodiment discloses a numerically controlled multi-way valve for oilfield metering, which is a further improvement on the embodiment 1.

[0061] Please refer to Figure 2 and Figures 12-15A second connecting member 25 is slidably connected to the multi-port pipe 12. A spring is fixed between the second connecting member 25 and the multi-port pipe 12. The second connecting member 25 is fixedly connected to the first fixed housing 7. A straight channel 26 and an L-shaped channel 27 are provided inside the second connecting member 25. The first fixed housing 7 is fixedly connected to and connected to the well selection outlet 8. The L-shaped channel 27 is connected to the first fixed housing 7. The straight channel 26 is used to connect the multi-port pipe 12 and the adjacent first connecting member 16. The L-shaped channel 27 is used to connect the multi-port pipe 12 and the first fixed housing 7. The second connecting member 25 consists of a sliding part and a corrugated part. The corrugated part of the second connecting member 25 is fixedly connected to and connected to the first fixed housing 7. The sliding part of the second connecting member 25 slides back and forth along the adjacent multi-port pipe 12. When in mixed transport operation, the multi-port pipe 12 transports the fluid flowing inside through the straight channel 26. When in well selection operation, the multi-port pipe 12... The fluid flowing through it is transported through the L-shaped channel 27. The second connecting member 25 is fixedly connected to the side away from the first fixed shell 7 with a second L-shaped frame 28. The sealing plate 6 is fixedly connected to a fixed box 29. The fixed box 29 is provided with a second driving member 30. 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. The rotating frame 31 is fixedly connected to a pressing block 32 for pressing adjacent second L-shaped frames 28. The second driving member 30 is a single-axis motor. The rotating frame 31 is composed of a U-shaped frame and an annular frame fixedly connected to each other. The annular frame in the rotating frame 31 is fixedly connected to the pressing block 32. The cross section of the pressing block 32 is an isosceles trapezoid to facilitate the pressing of adjacent second L-shaped frames 28. The pressing of the second L-shaped frame 28 by the pressing block 32 causes the second L-shaped frame 28 to move backward along the edge of the pressing block 32.

[0062] The above settings enable the operator to control the drive shaft of the second drive component 30 to rotate via the control terminal before well selection. The drive shaft of the second drive component 30 drives the extrusion block 32 to rotate via the rotating frame 31. The extrusion block 32 moves closer to the single well inlet 9 that needs to be selected. When the extrusion block 32 contacts the second L-shaped frame 28 corresponding to the single well inlet 9, it presses it backward, causing the second L-shaped frame 28 to drive the sliding part of the adjacent second connecting member 25 to move backward (the sliding part of the second connecting member 25 presses the adjacent spring during the movement). At this time, the corrugated part of the second connecting member 25 is stretched.

[0063] When the rear 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-port pipe 12. Then, the fluid is transported from the single well inlet 9 to the multi-port pipe 12 through the solenoid valve 10, and then transported to the first fixed shell 7 through the L-shaped channel 27. Finally, it is discharged from the well selection outlet 8, thus completing the well selection and fluid transportation process after well selection. (When the well selection operation is no longer required, the drive shaft of the second drive member 30 drives the rotating frame 31 and the extrusion block 32 to move until the extrusion block 32 no longer extrudes the second L-shaped frame 28. The second L-shaped frame 28 and the second connecting member 25 are reset under the action of their adjacent springs, so that the straight channel 26 is reconnected with the adjacent multi-port pipe 12.)

[0064] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present 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 the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A numerically controlled multi-way valve for oilfield metering, characterized in that: The system includes a base (1), to which a liquid guide (2) is fixedly connected. The liquid guide (2) is connected to a bypass channel (3). A connecting shell (4) is fixedly connected to the upper side of the liquid guide (2). A mixing outlet (5) is fixedly connected to the upper side of the connecting shell (4). A sealing plate (6) is fixedly connected to one side of the connecting shell (4). A first fixing shell (7) is fixedly connected to the other side of the connecting shell (4). Several single-well inlets (9) are fixedly connected to the connecting shell (4). A connecting component is provided inside the connecting shell (4). The connecting component is used to connect all the single-well inlets (9), the liquid guide (2), and the mixing outlet (5). The connecting assembly includes solenoid valves (10) whose number is the same as the sum of the number of all the single well inlets (9), the liquid guides (2), and the mixing outlets (5). All the solenoid valves (10) are fixedly connected to and connected to the liquid guides (2), the mixing outlets (5), and the adjacent single well inlets (9), respectively. The opposing sides of the solenoid valves (10) on the liquid guides (2) and the mixing outlets (5) are fixedly connected to and connected to a first connecting pipe (11). The solenoid valves (10) on the single well inlets (9) are fixedly connected to and connected to a multi-port pipe (12). All the first connecting pipes (11) and the... A second fixed shell (121) is fixedly connected to the opposing sides of the multi-port pipes (12). A sealing assembly is provided inside the second fixed shell (121). The sealing assembly is used to seal the opposing sides of all the first connecting pipes (11) and all the multi-port pipes (12). The sealing assembly includes a rotating shell (13) that is rotatably and sealingly connected to the second fixed shell (121). A rotating shell (14) is fixedly connected to the rotating shell (13). The rotating shell (13) and the rotating shell (14) are fixedly connected and communicated with a second connecting shell whose number is the same as the sum of the number of the first connecting pipes (11) and the multi-port pipes (12). Connector (15); The second connecting pipe (15) is limited and sealed by a first connecting member (16), and the first connecting member (16) is fixedly connected to the rotating shell (13) by an elastic member (17). The first connecting member (16) near the first connecting pipe (11) is used to connect the adjacent second connecting pipe (15) to the adjacent first connecting pipe (11), and the first connecting member (16) near the multi-port pipe (12) is used to connect the adjacent second connecting pipe (15) to the adjacent multi-port pipe (12); Both ends of the first connecting member (16) are provided with annular inclined surfaces.The rotating shell (13) is rotatably connected to a turntable (18). The rotating shell (14) is fixedly connected to a first L-shaped frame (19) that is evenly distributed and has the same number as the second connecting pipe (15). The first L-shaped frame (19) is slidably connected to a connecting pin (20) that is fixedly connected to an adjacent first connecting piece (16). The turntable (18) is provided with inclined grooves that are evenly distributed and have the same number as the connecting pins (20). The inclined grooves on the turntable (18) are used to press the adjacent connecting pins (20).

2. The numerically controlled multi-way valve for oilfield metering according to claim 1, characterized in that: A first drive member (21) is hinged between the turntable (18) and the connecting shell (4).

3. The numerically controlled multi-way valve for oilfield metering according to claim 1, characterized in that: The multi-port pipe (12) is slidably connected to a second connecting member (25). A spring is fixed between the second connecting member (25) and the multi-port pipe (12). The second connecting member (25) is fixedly connected to the first fixed shell (7). A straight channel (26) and an L-shaped channel (27) are provided inside the second connecting member (25). The first fixed shell (7) is fixedly connected to and connected to a well outlet (8). The L-shaped channel (27) is connected to the first fixed shell (7).

4. The numerically controlled multi-way valve for oilfield metering according to claim 3, characterized in that: The second connecting member (25) is fixedly connected to a second L-shaped frame (28) on the side 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 provided inside 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 inside the connecting shell (4). The rotating frame (31) is fixedly connected to a pressing block (32) for pressing the adjacent second L-shaped frame (28).

5. A numerically controlled multi-way valve for oilfield metering according to claim 4, characterized in that: The extrusion block (32) has an isosceles trapezoidal cross section to facilitate the extrusion of the second L-shaped frame (28).

Images