Multi-channel producing well valve

Abstract

The invention relates to the technical field of oil extraction equipment, in particular to a multi-channel oil extraction well valve which comprises a valve shell, a valve cover and an oil outlet pipeline, and the valve cover and the oil outlet pipeline are connected to the top and the bottom of the valve shell. Oil inlet pipelines are connected into the multiple connecting-in pipes on the circumferential face of the valve shell, every two adjacent oil inlet pipelines are connected through a flow equalizing component, and therefore when the pressure in one oil inlet pipeline is larger than a preset value, crude oil in the oil inlet pipeline enters the other oil inlet pipeline through the flow equalizing component in the clockwise direction or the anticlockwise direction. And valve cores for controlling the plurality of access pipes to be opened or closed are arranged in the valve shell and the valve cover. Damage to the valve and related pipelines caused by local high pressure is reduced, the service life of equipment is prolonged, and the maintenance and replacement cost of the equipment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of oil production equipment, and more specifically to a multi-channel oil production well valve. Background Art

[0002] In the actual operation of oil extraction, in order to simplify the subsequent processing flow and improve the processing efficiency, it is sometimes necessary to mix the oil from multiple oil layers and transport them uniformly. The multi-channel oil production valve can meet this demand. It can flexibly mix the oil from multiple oil layers and send it into an output channel according to the actual production situation and process requirements of the oil well, so as to facilitate the subsequent centralized treatment of the mixed oil, such as centralized dehydration, degassing, stabilization and other process operations; however, when the oil from multiple oil layers is mixed and gathered inside the multi-channel oil production valve, if the oil inlet volume and oil inlet pressure of different oil inlet branches are too different, it is easy to cause the sealing components of the valve to be subjected to uneven force, which is prone to failure. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a multi-channel oil production well valve.

[0004] The technical solution adopted by the present invention is:

[0005] A multi-channel oil well valve comprises: a valve housing, a valve cover and an oil outlet pipeline connected to the top and bottom of the valve housing; multiple access pipes on the circumferential surface of the valve housing are all connected to the oil inlet pipeline, and two adjacent oil inlet pipelines are connected by a flow balancing component, so that when the pressure in an oil inlet pipeline is greater than a preset value, the crude oil in the oil inlet pipeline passes through the flow balancing component in a clockwise or counterclockwise direction and enters another oil inlet pipeline; a valve core for controlling the opening or closing of multiple access pipes is installed in the valve housing and the valve cover.

[0006] Furthermore, the oil inlet pipeline includes: pipeline one closely connected to the access pipe, pipeline one vertically connected to a side port of pipeline two, a pressure-bearing sliding plug is sealed and slidably arranged inside pipeline two to open and close side port one, and a pressure-bearing spring is fixedly connected between the pressure-bearing sliding plug and the upper seat of pipeline two.

[0007] Furthermore, the slide column fixedly connected to the top of the pressure-bearing slide plug is slidably arranged on the upper seat of the second pipeline, and the clamping seat fixedly connected to the slide column is located above the upper seat of the second pipeline.

[0008] Furthermore, side port 2 and side port 3 are relatively opened on pipeline 2, and side port 2 and side port 3 are both located below side port 1; the flow equalizing component includes: an arc-shaped pipeline, the inlet end and the outlet end of the arc-shaped pipeline are respectively in close contact with side port 2 of one flow equalizing component and side port 3 of another flow equalizing component; a flow equalizing baffle for blocking the arc-shaped pipeline is slidably arranged in the longitudinal sliding groove at the top of the inlet end of the arc-shaped pipeline, and a tension spring is fixed between the pulling frame fixedly connected to the top of the flow equalizing baffle and the end block fixedly connected to the side of the inlet end of the arc-shaped pipeline.

[0009] Furthermore, the suspension rod fixed to the side of the holder is slidably arranged in the open groove at the top of the pulling frame, and the pulling block at the bottom of the suspension rod is located in the rectangular groove inside the pulling frame. When the holder moves upward to a preset distance, the upper surface of the pulling block contacts the top surface inside the pulling frame and drives the pulling frame to move upward, so as to control the flow equalizing baffle to gradually release the closure of the arc pipeline.

[0010] Furthermore, the valve core includes: a control shaft sealed and rotated in the center hole of the valve cover, the top of the control shaft is connected to a control wheel or a control motor, the bottom of the control shaft is fixedly connected to a control bevel gear, the control bevel gear is transmission-connected to a plurality of sealing components installed in the valve housing, and the plurality of sealing components are arranged one by one relative to the plurality of access pipes.

[0011] Furthermore, the sealing component includes: a lead screw and a horizontal axis rotated parallel to the inner wall of the valve housing, both of which are rotated on a bracket on the bottom surface of the valve housing, the transmission bevel gear fixed on the lead screw is meshed with the control bevel gear, the lead screw is screwed on the sealing component, and the horizontal axis is slidably disposed on the sealing component.

[0012] Furthermore, the sealing member includes: a conical plug coaxially arranged on the inner side of the access pipe, the conical plug sealingly slidably arranged on the guide tube, the round seat fixed on the guide tube is rotatably arranged on the displacement frame, and the displacement frame screwed on the screw is slidably connected to the transverse axis; a compression spring is fixed between the conical plug and the round seat, the guide tube is located between the conical plug and the round seat, and a plurality of guide holes are arranged on the tube body, and when the distance between the conical plug and the round seat is less than a preset value, the guide holes on the guide tube are inserted into the inner side of the conical plug.

[0013] Furthermore, the sealing member also includes: sprocket one fixed on the screw, sprocket one is connected to sprocket two fixed on the transverse axis through chain one, the axial slide groove on the transverse axis is slidably matched with the slider fixed in the rotating tube, the rotating tube sleeve mounted on the displacement frame is arranged on the outside of the transverse axis, and the sprocket three fixed on the rotating tube is connected to the sprocket four fixed to the end of the round seat away from the guide tube through chain two.

[0014] Furthermore, an inner conical surface matching with the outer conical surface of the conical plug is provided at the inner end of the access pipe, and a sealing structure for abutting against and matching with the outer conical surface of the conical plug is also provided on the inner conical surface.

[0015] It can be seen from the above scheme that the beneficial effects of the present invention are:

[0016] In a multi-channel oil well valve of the present invention, two adjacent oil inlet pipelines are connected by a flow balancing component. When the pressure in a certain oil inlet pipeline is greater than a preset value, the crude oil can enter the other oil inlet pipeline through the flow balancing component in a clockwise or counterclockwise direction, so that the pressures between the various oil inlet pipelines can be adjusted to each other, avoiding excessive local pressure, ensuring the relative stability of the pressure of the entire oil well valve system, helping to reduce damage to the valve and related pipelines caused by local high pressure, extending the service life of the equipment, and reducing the maintenance and replacement costs of the equipment; a plurality of access pipes are arranged on the circumferential surface of the valve shell and connected to the oil inlet pipelines, so that crude oil can be collected from multiple directions at the same time. Compared with a single-channel valve, the number of oil production channels is greatly increased, thereby improving the crude oil collection speed and efficiency.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 A schematic diagram of a first direction of a multi-channel oil well valve provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a second direction of a multi-channel oil well valve provided by an embodiment of the present invention;

[0021] Figure 3 A cross-sectional view of a multi-channel oil well valve provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of a valve housing provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of an oil inlet pipeline provided by an embodiment of the present invention;

[0024] Figure 6 A cross-sectional view of an oil inlet pipeline provided by an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of a current balancing component provided in an embodiment of the present invention;

[0026] Figure 8 A schematic diagram of a valve core and a sealing structure provided in an embodiment of the present invention;

[0027] Fig. 9 A schematic diagram of a blocking component provided by an embodiment of the present invention;

[0028] Fig.10 A schematic diagram of a blocking member provided in an embodiment of the present invention;

[0029] Fig.11 A cross-sectional view of a sealing structure provided by an embodiment of the present invention;

[0030] Fig.12 A schematic diagram of a conical plug and a flow guide tube provided in an embodiment of the present invention.

[0031] Icons: valve housing 1; access pipe 101; valve cover 2; oil outlet pipeline 3; oil inlet pipeline 4; pipeline 1 401; pipeline 2 402; pressure-bearing sliding plug 403; pressure-bearing spring 404; sliding column 405; seat 406; suspension rod 407; pulling block 408; flow-equalizing component 5; arc pipeline 501; flow-equalizing baffle 502; pulling frame 503; tension spring 504; valve core 6; control shaft 601; bevel gear 602; blocking part Part 603; screw 604; horizontal axis 605; bracket 606; transmission bevel gear 607; sealing part 608; conical plug 609; guide tube 610; round seat 611; displacement frame 612; compression spring 613; guide hole 614; rotating tube 615; sealing structure 7; sealing airbag 701; air pipe 702; air cylinder 703; piston disc 704; anti-slip block 705; piston rod 706; reset tension spring 707. DETAILED DESCRIPTION

[0032] In order to clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention, it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0034] Example 1

[0035] See also Figure 1-Figure 12 The present invention provides a multi-channel oil well valve, comprising: a valve housing 1, and a valve cover 2 and an oil outlet pipeline 3 connected to the top and bottom of the valve housing 1; multiple access pipes 101 on the circumferential surface of the valve housing 1 are all connected to the oil inlet pipeline 4, and two adjacent oil inlet pipelines 4 are connected by a flow balancing component 5, so that when the pressure in an oil inlet pipeline 4 is greater than a preset value, the crude oil in the oil inlet pipeline 4 passes through the flow balancing component 5 in a clockwise or counterclockwise direction to enter another oil inlet pipeline 4; a valve core 6 for controlling the opening or closing of the multiple access pipes 101 is installed in the valve housing 1 and the valve cover 2.

[0036] The working principle and technical effects of the above technical solution are as follows:

[0037] In the present invention, a plurality of access pipes 101 are arranged on the circumferential surface of the valve housing 1 and connected to the oil inlet pipeline 4, so that crude oil can be collected from multiple directions at the same time. Compared with a single-channel valve, the number of oil production channels is greatly increased, thereby improving the speed and efficiency of crude oil collection. In addition, according to different oil production requirements and oil layer conditions, some access pipes can be flexibly opened or closed to adapt to different oil production conditions, thereby improving the adaptability and controllability of oil production operations. Two adjacent oil inlet pipelines 4 are connected by a flow balancing component 5. When the pressure in a certain oil inlet pipeline 4 is greater than a preset value, the crude oil can enter the other oil inlet pipeline 4 in a clockwise or counterclockwise direction through the flow balancing component 5. It should be noted that in the present application, the crude oil in all oil inlet pipelines 4 passes through the flow balancing component 5. The flow directions of multiple flow balancing components 5 are the same, that is, they all flow clockwise or counterclockwise. The setting of multiple flow balancing components 5 allows the pressures between the oil inlet pipelines 4 to be adjusted to each other, avoiding excessive local pressure, ensuring the relative stability of the valve pressure of the entire multi-channel oil well, and helping to reduce damage to valves and related pipelines caused by local high pressure, extending the service life of the equipment, and reducing the maintenance and replacement costs of the equipment; the valve core 6 installed in the valve housing 1 and the valve cover 2 is used to control the opening or closing of multiple access pipes 101. By operating the valve core 6, the flow of multiple oil inlet pipelines 4 can be accurately adjusted to ensure that the oil production process is carried out according to the predetermined plan, thereby achieving fine control of the oil production process.

[0038] The oil inlet pipeline 4 includes: pipeline one 401 closely connected to the access pipe 101, pipeline one 401 is vertically connected to a side port of pipeline two 402, a pressure-bearing sliding plug 403 is sealed and slidably arranged in pipeline two 402 to open and close side port one, and a pressure-bearing spring 404 is fixedly connected between the pressure-bearing sliding plug 403 and the upper seat of pipeline two 402.

[0039] The working principle and technical effects of the above technical solution are as follows:

[0040] During the crude oil collection process, the bottom of the pipeline 2 402 is connected to the oil production pipeline. After the crude oil enters the pipeline 2 402, it generates pressure on the pressure-bearing sliding plug 403. When the pressure reaches the preset value, the pressure-bearing sliding plug 403 is pushed to slide upward and compress the pressure-bearing spring 404. At this time, the side port 1 is opened, so that the crude oil can enter the pipeline 1 401, and enter the access pipe 101 and the valve housing 1 connected thereto through the pipeline 1 401; the crude oil pressure is used to control the movement of the pressure-bearing sliding plug 403 to realize the automatic opening of the oil inlet pipeline 4. When the crude oil pressure reaches the preset value, the pressure-bearing sliding plug 403 slides upward to open Side port 1 allows crude oil to enter the valve housing 1; when the pressure is lower than the preset value, the pressure-bearing spring 404 pushes the pressure-bearing sliding plug 403 to reset and close the side port 1, which can adaptively adjust the oil inlet flow rate according to the actual pressure of the crude oil, reduce manual intervention, and ensure the stability and efficiency of the oil production process. By setting a suitable pressure preset value, it can prevent excessively high-pressure crude oil from directly impacting the valve housing 1 and other equipment. When the pressure is too high, the pressure-bearing sliding plug 403 will open in time to introduce crude oil into the system, avoiding excessive accumulation of pressure in the oil production pipeline, thereby reducing the risk of equipment damage due to overpressure and extending the service life of the equipment.

[0041] The slide column 405 fixed to the top of the pressure-bearing slide plug 403 is slidably arranged on the upper seat of the second pipeline 402, and the clamping seat 406 fixed to the slide column 405 is located above the upper seat of the second pipeline 402. The second pipeline 402 also has a side port 2 and a side port 3, which are both located below the side port 1; the flow equalizing component 5 includes: an arc pipeline 501, the inlet end and the outlet end of the arc pipeline 501 are respectively in close contact with the side port 2 of one flow equalizing component 5 and the side port 3 of another flow equalizing component 5; a flow equalizing baffle 502 for blocking the arc pipeline 501 is slidably arranged in the longitudinal slide groove at the top of the inlet end of the arc pipeline 501, and a tension spring 504 is fixedly connected between the pulling frame 503 fixed to the top of the flow equalizing baffle 502 and the end block fixed to the side of the inlet end of the arc pipeline 501. The suspension rod 407 fixed to the side of the holder 406 is slidably arranged in the open groove at the top of the pulling frame 503, and the pulling block 408 at the bottom of the suspension rod 407 is located in the rectangular groove inside the pulling frame 503. When the holder 406 moves upward to a preset distance, the upper surface of the pulling block 408 contacts the inner top surface of the pulling frame 503, and drives the pulling frame 503 to move upward, so as to control the flow-equalizing baffle 502 to gradually release the closure of the arc pipeline 501. A one-way valve is also arranged below the pipeline 2 402, and the one-way valve is located so that crude oil can only enter the pipeline 2 402 from the oil production pipeline, so as to prevent the problem of crude oil backflowing to the oil production pipeline after the crude oil in the oil inlet pipeline 4 with excessive pressure enters the oil inlet pipeline 4 with too low pressure or unused through the flow-equalizing component 5.

[0042] The working principle and technical effects of the above technical solution are as follows:

[0043] In the oil inlet pipeline 4 with excessive pressure, when the crude oil lifts the pressure-bearing slide plug 403 and slides upward to a preset distance, the pressure-bearing slide plug 403 can drive the slide column 405 and the seat 406 to rise to a certain height. At this time, the suspension rod 407 fixed to the side of the seat 406 drives the upper surface of the pulling block 408 to contact the inner top surface of the pulling frame 503. As the pressure-bearing slide plug 403 continues to rise, the pulling block 408 drives the pulling frame 503 to move upward, thereby controlling the flow-averaging baffle 502 to gradually release the closure of the arc pipeline 501, so as to realize the arc pipeline 5 01 is opened. At this time, the crude oil in the oil inlet pipeline 4 with excessive pressure can flow to the other oil inlet pipeline 4 in a preset direction. If the pressure of the crude oil in the other oil inlet pipeline 4 is relatively small, the pressure-bearing sliding plug 403 in the lifting period will cooperate with the crude oil flowing into the valve housing 1. If the pressure in the other oil inlet pipeline 4 is also relatively large, the other arc pipeline 501 will be opened in a preset clockwise direction, so that it will flow into the next oil inlet pipeline 4 in a clockwise direction, effectively balancing the pressures of the oil inlet pipelines 4 and avoiding excessive pressure differences among the oil inlet pipelines 4.

[0044] The arrangement of the above scheme can make an immediate response to the pressure change in the oil inlet pipeline 4. When the pressure of a certain oil inlet pipeline 4 is too high, the crude oil pushes the pressure-bearing sliding plug 403 to rise, thereby driving a series of components to move, open the arc pipeline 501, and allow the crude oil to flow to other oil inlet pipelines 4. This dynamic and real-time adjustment mechanism ensures that measures can be taken quickly to maintain the pressure balance of each oil inlet pipeline 4 when the pressure is abnormal; and the pressure balance adjustment has an adaptive characteristic. If the pressure of another oil inlet pipeline 4 is relatively small, the crude oil can cooperate with it to enter the valve housing 1; if the pressure is also relatively large, the next arc pipeline 501 will continue to be opened in a preset clockwise direction to guide the crude oil to the next oil inlet pipeline 4. The adaptive balancing process can automatically adjust the flow direction and distribution of the crude oil according to the actual pressure conditions of different oil inlet pipelines 4, effectively avoiding the problem of excessive pressure difference between the oil inlet pipelines 4; through the pressure-bearing sliding plug 403, The ingenious linkage of simple structures such as the sliding column 405, the seat 406, the suspension rod 407, the pulling block 408 and the pulling frame 503 realizes the conversion of the pressure signal into the opening action of the arc pipeline 501. This mechanical linkage design has a compact structure, and the connection and transmission relationship between the structures are clear. It can efficiently convert the pressure change into the actual adjustment action, ensuring the reliability and stability of the system; the entire pressure balance adjustment process is based on the principle of mechanical linkage and does not require additional external energy input, which not only reduces the energy consumption and operating costs of the present invention, but also avoids the problem of adjustment failure caused by interruption of external energy supply, and improves the adaptability and reliability of the system in various environments; the present invention reduces the risk of equipment damage due to uneven pressure by effectively balancing the pressure of each oil inlet pipeline 4, extends the service life of the equipment, reduces the cost of equipment maintenance and replacement, and helps to ensure the continuity and stability of oil production operations. It avoids problems such as oil production interruption and production fluctuation caused by excessively high or low local pressure, ensures that crude oil can continuously and stably flow into the valve housing 1 from each oil inlet pipeline 4, and improves oil production efficiency and quality; in addition, in the present invention, by adjusting the preset distance of the rise of the pressure-bearing sliding plug 403, the elastic coefficient of the pressure-bearing spring 404 and other parameters, the triggering conditions and adjustment range of the pressure balance adjustment are flexibly set, which is convenient for adapting to different oil production conditions and pressure requirements, and has strong scalability and flexibility; the design principle of this scheme can be applied to oil inlet pipelines 4 of different numbers and layouts. No matter how many oil inlet pipelines 4 are and how they are arranged, as long as they are designed and installed according to the same mechanical linkage principle, the pressure balance adjustment between the oil inlet pipelines can be achieved, and it has wide applicability.

[0045] Example 2

[0046] See also Figure 1-Figure 12In a multi-channel oil well valve provided by the present invention, the valve core 6 includes: a control shaft 601 that is sealed and rotated in the center hole of the valve cover 2, the top of the control shaft 601 is connected to a control wheel or a control motor, the bottom of the control shaft 601 is fixedly connected to a control bevel gear 602, the control bevel gear 602 is transmission-connected to multiple blocking components 603 installed in the valve housing 1, and the multiple blocking components 603 are arranged one by one opposite to the multiple access pipes 101.

[0047] The working principle and technical effects of the above technical solution are as follows:

[0048] In a multi-channel oil production well valve provided by the present invention, the structure of the valve core 6 is set so that it can synchronously control the opening or closing of multiple access pipes 101, and realize the rapid control of multiple oil inlet pipelines 4. The top of the control shaft 601 is connected to a control wheel or a control motor, and the rotation of the control shaft 601 can be controlled by rotating the shaft 601 or starting the control motor. When the control shaft 601 rotates, it drives the control bevel gear 602 to rotate, and the control bevel gear 602 controls multiple blocking components 603 to block multiple access pipes 101 or release the blocking of multiple access pipes 101; the structure of the valve core 6 can synchronously control the opening or closing of multiple access pipes, thereby realizing the rapid control of multiple oil inlet pipelines 4. In oil production operations, this means that multiple oil production channels can be operated at one time, greatly improving the control efficiency during the oil production process. For example, when it is necessary to stop all oil inlet passages for equipment maintenance, it is only necessary to drive the control bevel gear 602 through the control shaft 601 to make multiple blocking components 603 block the access pipe 101 at the same time, avoiding the tedious process of operating a single valve one by one, saving time and labor costs; synchronous control ensures the consistency of operation of each oil inlet pipeline 4, which helps to maintain the stable operation of the oil production system. The opening or closing of each oil inlet pipeline 4 is carried out synchronously, which can avoid pressure fluctuations and uneven flow caused by asynchronous operation, and ensure the stability and continuity of the oil production process. The top of the control shaft 601 can be connected to either a control wheel or a control motor. When the control wheel is connected, the operator can perform manual control and drive the control shaft 601 to rotate by turning the wheel. This method is suitable for situations where delicate operation is required or automatic control cannot be used due to equipment failure. When the control motor is connected, automatic control can be realized, and the rotation of the control shaft 601 can be controlled according to the preset program or instruction, which improves the accuracy and timeliness of the operation, and is particularly suitable for large-scale and long-term oil production operations. The flexible operation mode enables the valve core to adapt to different oil production conditions and environments. In some small oil production wells or scenarios with low requirements for automation, the manual control method can meet the needs and is low in cost; while in large oil production platforms or occasions with high requirements for operation accuracy and efficiency, the automatic control method is more advantageous.

[0049] The sealing component 603 includes: a lead screw 604 and a horizontal axis 605 which are rotated parallel to the inner wall of the valve housing 1, and the lead screw 604 and the horizontal axis 605 are both rotated on a bracket 606 on the bottom surface of the valve housing 1, a transmission bevel gear 607 fixed on the lead screw 604 is meshed with the control bevel gear 602, the lead screw 604 is screwed on the sealing component 608, and the horizontal axis 605 is slidably disposed on the sealing component 608.

[0050] The working principle and technical effects of the above technical solution are as follows:

[0051] When the control shaft 601 rotates, it drives the control bevel gear 602 to rotate, and the control bevel gear 602 rotates to engage the transmission bevel gear 607, thereby controlling the rotation of the lead screw 604. When the lead screw 604 rotates, its contact position with the blocking piece 608 changes, thereby controlling the blocking piece 608 to slide on the blocking piece 608, so that the blocking piece 608 moves in the direction of the access tube 101 to close the access tube 101, or moves in the direction away from the access tube 101 to open the access tube 101; the rotation of the control shaft 601 can be accurately transmitted to the lead screw 604 through the meshing transmission of the control bevel gear 602 and the transmission bevel gear 607; the bevel gear transmission has the characteristics of accurate transmission ratio and high transmission efficiency, which ensures the accuracy of motion transmission, so that the movement of the blocking piece 608 can be carried out as expected, and the accurate control of the opening and closing of the access tube 101 is realized; the lead screw The screw connection between 604 and the sealing member 608 allows the position of the sealing member 608 to be accurately adjusted according to the rotation of the lead screw 604. The operator can accurately control the moving distance of the sealing member 608 by controlling the number of rotations and direction of the control shaft 601, thereby achieving precise control of the opening of the access pipe 101 and meeting the flow and pressure regulation requirements under different oil production conditions; the lead screw 604 and the horizontal axis 605 are both rotated on the bracket 606 on the bottom surface of the valve housing 1, and the bracket 606 provides stable support for the lead screw 604 and the horizontal axis 605, reducing shaking and vibration during the transmission process, ensuring the stability of the transmission, extending the service life of the equipment, and reducing the probability of failure due to structural instability. The horizontal axis 605 is slidably arranged on the sealing member 608, playing a role of guidance and auxiliary support, so that the sealing member 608 is more stable during movement. Compared with a single transmission mode, this combined structure can better withstand the effects of crude oil pressure and other external forces, ensuring the smoothness and reliability of the movement of the plugging member 608; the forward and reverse rotation of the control shaft 601 can control the plugging member 608 to move toward or away from the access pipe 101, thereby realizing the opening and closing operations of the access pipe 101. This reversible operation mode allows the state of the access pipe 101 to be adjusted at any time according to actual conditions during the oil production process, which is convenient and quick; the structure is relatively simple, with fewer components, reducing the possibility of failure. Even if a component fails, it is easy to detect and repair it in time, and will not cause serious impact on the entire oil production system, thereby improving the reliability and fault tolerance of the system.

[0052] The sealing member 608 includes: a conical plug 609 coaxially arranged on the inner side of the access tube 101, the conical plug 609 is sealingly slidably arranged on the guide tube 610, the round seat 611 fixed on the guide tube 610 is rotatably arranged on the displacement frame 612, and the displacement frame 612 screwed on the screw 604 is slidably connected to the horizontal axis 605; a compression spring 613 is fixed between the conical plug 609 and the round seat 611, and the guide tube 610 is located between the conical plug 609 and the round seat 611. A plurality of guide holes 614 are provided on the tube body. When the distance between the conical plug 609 and the round seat 611 is less than a preset value, the guide holes 614 on the guide tube 610 are inserted into the inner side of the conical plug 609.

[0053] The working principle and technical effects of the above technical solution are as follows:

[0054] When the lead screw 604 rotates, the contact position between the lead screw 604 and the displacement frame 612 can be changed, thereby controlling the displacement frame 612 to slide on the horizontal axis 605. When the displacement frame 612 slides, the cone plug 609 can be driven to move by the cooperation of the round seat 611, the compression spring 613 and the guide tube 610. When the access tube 101 is controlled to be closed, the cone plug 609 first contacts the access tube 101. At this time, the access tube 101 is blocked by the outer cone surface of the cone plug 609, and the crude oil in the access tube 101 is blocked, so that the crude oil enters the guide tube 610. 0, and enter the valve housing 1 through the multiple guide holes 614 of the guide tube 610 to perform intermittent flow interruption. After the outer cone surface of the conical plug 609 is blocked at the access pipe 101, as the displacement frame 612 continues to move, the compression spring 613 can be compressed, and the length of the guide tube 610 inserted into the conical plug 609 can be controlled to change, so that when the distance between the conical plug 609 and the round seat 611 is less than the preset value, the guide hole 614 on the guide tube 610 is inserted into the inner side of the conical plug 609, and the flow interruption work is completely achieved at this time;

[0055] The design of the above scheme can achieve smooth flow interruption during the oil production process. In the traditional valve closing process, sudden and complete flow interruption may cause water hammer, which will impact the pipeline and equipment, leading to pipeline rupture, equipment damage and other problems. This scheme avoids instantaneous and complete flow interruption of crude oil flow by designing two stages of intermittent flow interruption and complete flow interruption. When the access pipe 101 is closed, the crude oil enters the valve housing 1 through the guide hole 614 of the guide pipe 610, achieving intermittent flow interruption and reducing the impact force caused by the sudden fluid interruption. After that, as the displacement frame 612 continues to move, the guide hole 614 of the guide pipe 610 is inserted into the conical plug 609 to achieve complete flow interruption. The entire flow interruption process is smooth and orderly, reducing damage to the oil production system and extending the service life of the equipment; effectively alleviating the water hammer effect, ensuring the smooth operation of the oil production system, and solving the technical problem of smooth flow interruption; for the oil well valve, good sealing of the access pipe is very important. If the sealing is not tight, it will cause crude oil leakage, which will not only cause resource waste, but also may cause safety accidents and environmental pollution. This scheme uses the outer cone surface of the conical plug to perform preliminary blocking first, and then achieves further tight sealing through the cooperation of the compression spring and the guide tube, ensuring that the access pipe can have a good sealing effect under different working conditions, solving the problem of insufficient sealing; during the oil production process, the pressure and flow of crude oil will change with factors such as the production stage and the oil layer condition, and traditional valves may be difficult to adapt to such changes. In this scheme, during the flow interruption process, crude oil can first enter the valve housing 1 through the guide hole 614 of the guide tube 610. When the pressure and flow change, this design can play a certain buffering and regulating role, so that the valve can better adapt to different working conditions, solving the problem of poor adaptability of the valve to pressure and flow changes; in addition, the design of the guide tube 610 and the guide hole 614 plays a buffering and regulating role. During the flow interruption process, crude oil can enter the valve housing 1 through the guide hole 614, avoiding the damage to the valve and pipeline caused by the instantaneous increase in pressure. At the same time, the presence of the compression spring 613 makes the valve have a certain elasticity during the closing process, which can adapt to the changes of different pressures and flows, ensuring the stable operation of the valve under different working conditions.

[0056] The sealing member 608 also includes: sprocket one fixed on the screw 604, sprocket one is connected to sprocket two fixed on the transverse axis 605 through chain one, the axial slide groove on the transverse axis 605 is slidably matched with the slider fixed in the rotating tube 615, the rotating tube 615 rotated on the displacement frame 612 is sleeved on the outside of the transverse axis 605, and the sprocket three fixed on the rotating tube 615 is connected to the sprocket four fixed on the round seat 611 at one end away from the guide tube 610 through chain two.

[0057] The working principle and technical effects of the above technical solution are as follows:

[0058] In the process of gradual flow interruption and plugging, when the lead screw 604 rotates, it can drive the sprocket wheel 1 to rotate. When the sprocket wheel 1 rotates, it can drive the sprocket wheel 2 to rotate through the chain 1 transmission, thereby driving the horizontal axis 605 to rotate. When the horizontal axis 605 rotates, it can drive the rotating tube 615 to rotate through the cooperation of the axial sliding groove on the horizontal axis 605 and the sliding block in the rotating tube 615, and will not affect the sliding of the rotating tube 615 on the horizontal axis 605. When the rotating tube 615 rotates, it can drive the sprocket wheel 3 to rotate. The sprocket wheel 3 drives the sprocket wheel 4 to rotate through the chain 2, thereby driving the round seat 611 to rotate. When the round seat 611 rotates, it drives the conical plug 609 to rotate through the compression spring 613. When the conical plug is rotated, When 609 contacts the access pipe 101, the conical plug 609 is driven to rotate, so that impurities such as crude oil dirt at the pipe opening of the access pipe 101 can be scraped off. During the oil production process, impurities such as crude oil dirt will accumulate at the pipe opening of the access pipe 101, and these impurities will affect the sealing performance between the conical plug 609 and the access pipe 101. When the conical plug 609 rotates, it can scrape off the impurities at the pipe opening of the access pipe 101 like a scraper. After the pipe opening is cleaned, the conical plug 609 and the access pipe 101 can achieve a tighter fit, thereby significantly improving the sealing effect of the plugging and reducing the risk of crude oil leakage; compression spring The existence of 613 gives the conical plug 609 a certain buffering ability when rotating. When the conical plug 609 encounters a large friction force during rotation (for example, too much impurities or deformation of the pipe mouth, etc.), when the friction force reaches a preset value, the compression spring 613 will deform, absorb part of the energy, and stop the conical plug 609 from rotating. This buffering mechanism avoids the hard friction between the conical plug 609 and the access pipe 101, prevents the surface of the conical plug 609 and the access pipe 101 from being damaged due to excessive friction, and prolongs the service life of the equipment. The buffering effect makes the conical plug 609 more stable when facing different degrees of impurity accumulation and pipe mouth deformation. When there is unevenness, etc., it can automatically adjust the rotation state to better adapt to various working conditions and ensure the smooth progress of the plugging operation; due to the buffering protection of the compression spring 613, the possibility of damage to the conical plug 609 and the access pipe 101 is reduced, and the probability of failure caused by component damage is reduced; in the process of gradual flow interruption and plugging, the rotation cleaning and buffering protection functions of the conical plug 609 cooperate with each other to ensure the smooth progress of the flow interruption process, avoid problems such as poor flow interruption or poor sealing caused by impurity blockage or component damage, ensure the normal operation of the oil well valve, and improve the operating efficiency of the entire oil production system.

[0059] In another solution, in order to improve the cleaning effect of the access pipe 101 and prevent the conical plug 609 from stopping due to encountering large friction (such as excessive impurities or deformation of the pipe mouth) during rotation, a groove is provided on the inner wall of the conical plug 609, and the protrusion on the guide tube 610 slides in the groove of the conical plug 609. At this time, when the round seat 611 rotates, the conical plug 609 is driven to rotate through the guide tube 610, thereby ensuring that the conical plug 609 continues to rotate to clean the access pipe 101.

[0060] The inner end of the access pipe 101 is provided with an inner conical surface that matches with the outer conical surface of the conical plug 609 , and the inner conical surface is also provided with a sealing structure 7 for abutting against and matching with the outer conical surface of the conical plug 609 .

[0061] The inner conical surface of the access pipe 101 cooperates with the outer conical surface of the conical plug 609. This design increases the contact area and fit between the two. Compared with flat seals, conical seals can better adapt to processing errors and installation deviations, and can achieve a larger radial sealing force under a smaller axial force, thereby effectively preventing crude oil leakage and greatly improving the sealing performance of the valve. The sealing structure 7 arranged on the inner conical surface further enhances the sealing effect. The sealing structure 7 can be made of materials such as rubber rings and sealing gaskets. These materials have good elasticity and sealing properties, and can fill the tiny gap between the outer conical surface of the conical plug 609 and the inner conical surface of the access pipe 101, forming a reliable sealing defense line, which can ensure that crude oil will not leak from the gap even under high pressure and high flow conditions.

[0062] The sealing structure 7 includes: a sealing airbag 701 arranged in the annular groove on the inner conical surface of the access tube 101, the sealing airbag 701 is connected to the air pipe 702 penetrated in the mounting hole of the access tube 101, the air pipe 702 is connected to the side of the air cylinder 703, one end of the air cylinder 703 is fixedly connected to the inner wall surface of the valve housing 1, the air cylinder 703 is sealingly and slidingly provided with a piston disc 704, an anti-dropping block 705 fixedly connected to the other end of the air cylinder 703 is clamped on the inner side of the piston disc 704, the piston disc 704 is fixedly connected to one end of the piston rod 706, the middle part of the piston rod 706 is slidably arranged on the anti-dropping block 705, a reset tension spring 707 fixedly connected between the piston disc 704 and the anti-dropping block 705 is sleeved on the piston rod 706, and the other end of the piston rod 706 is provided with a pressure-bearing head for resisting and cooperating with the displacement frame 612, when the displacement frame 612 moves toward the direction of the access tube 101 to reach a preset distance, the displacement frame 612 contacts the pressure-bearing head.

[0063] The working principle and technical effect of the above technical solution are as follows: when the displacement frame 612 moves toward the access tube 101 to reach a preset distance, the displacement frame 612 contacts the pressure-bearing head. At this time, the displacement frame 612 presses the pressure-bearing head to move toward the access tube 101, thereby controlling the piston rod 706 to drive the piston plate 704 to move toward the access tube 101, thereby pressing the gas or liquid in the gas cylinder 703 into the air pipe 702, and then into the sealing airbag 701 through the air pipe 702, so that the sealing airbag 701 expands and fits on the outer conical surface of the conical plug 609, and the expanded sealing airbag 701 can fit tightly on the conical plug 609. On the outer conical surface of the plug 609, the possible small gap between the conical plug 609 and the access pipe 101 is further filled to reduce the leakage channel, thereby significantly improving the sealing performance of the valve and effectively preventing crude oil leakage; in the process of oil production, the working conditions are complex and changeable, and the access pipe 101 and the conical plug 609 may have a certain degree of wear, deformation or processing error. The expansion characteristics of the sealing airbag 701 enable it to adapt to these changes, adjust according to the actual gap size and shape, and always maintain a good sealing effect to ensure that the valve can work reliably under different working conditions; this scheme achieves the effect of step-by-step sealing. On the basis of the initial plugging of the conical plug 609, when the displacement frame 612 moves to a specific position, the sealing airbag 701 is triggered to expand for secondary sealing. This step-by-step sealing method makes the plugging process more stable and reliable, can gradually enhance the plugging force, effectively cope with the flow of crude oil with different pressures and flows, and avoid the problem of sealing failure caused by excessive or too small one-time plugging force; in addition, the expansion degree of the sealing airbag 701 can be adjusted by the pressure of the gas or liquid in the cylinder. During maintenance and overhaul, if the sealing performance is found to have declined, the expansion degree of the sealing airbag 701 can be changed by adjusting the pressure in the air cylinder to restore a good sealing effect without replacing the entire sealing component, thereby reducing maintenance costs and difficulty.

[0064] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A multi-channel oil well valve, characterized in that: include: The invention comprises a valve housing (1), and a valve cover (2) and an oil outlet pipeline (3) connected to the top and bottom of the valve housing (1); a plurality of access pipes (101) on the circumferential surface of the valve housing (1) are all connected to the oil inlet pipeline (4), and two adjacent oil inlet pipelines (4) are connected via a flow equalizing component (5), so that when the pressure in one oil inlet pipeline (4) is greater than a preset value, the crude oil in the oil inlet pipeline (4) flows into another oil inlet pipeline (4) in a clockwise or counterclockwise direction through the flow equalizing component (5); a valve core (6) for controlling the opening or closing of the plurality of access pipes (101) is installed in the valve housing (1) and the valve cover (2).

2. A multi-channel oil well valve according to claim 1, characterized in that: The oil inlet pipeline (4) comprises: pipeline one (401) closely connected to the access pipe (101), pipeline one (401) vertically connected to a side port of pipeline two (402), a pressure-bearing sliding plug (403) sealingly slidably arranged inside pipeline two (402) for opening and closing side port one, and a pressure-bearing spring (404) fixedly connected between the pressure-bearing sliding plug (403) and the upper seat of pipeline two (402).

3. A multi-channel oil well valve according to claim 2, characterized in that: The slide column (405) fixedly connected to the top of the pressure-bearing slide plug (403) is slidably arranged on the upper seat of the second pipeline (402), and the clamping seat (406) fixedly connected to the slide column (405) is located above the upper seat of the second pipeline (402).

4. A multi-channel oil well valve according to claim 3, characterized in that: The second pipe (402) is also provided with a side port 2 and a side port 3, both of which are located below the first side port. The flow equalizing component (5) comprises an arc-shaped pipe (501), wherein the inlet end and the outlet end of the arc-shaped pipe (501) are respectively in close contact with the side port 2 of one flow equalizing component (5) and the side port 3 of another flow equalizing component (5). A flow equalizing baffle (502) for blocking the arc-shaped pipe (501) is slidably arranged in a longitudinal slide groove at the top of the inlet end of the arc-shaped pipe (501), and a tension spring (504) is fixedly connected between a pulling frame (503) fixedly connected to the top of the flow equalizing baffle (502) and an end block fixedly connected to the side of the inlet end of the arc-shaped pipe (501).

5. A multi-channel oil well valve according to claim 4, characterized in that: The suspension rod (407) fixed to the side of the holder (406) is slidably arranged in the open groove at the top of the pulling frame (503), and the pulling block (408) at the bottom of the suspension rod (407) is located in the rectangular groove inside the pulling frame (503). When the holder (406) moves upward to a preset distance, the upper surface of the pulling block (408) contacts the inner top surface of the pulling frame (503) and drives the pulling frame (503) to move upward, so as to control the flow-averaging baffle (502) to gradually release the closure of the arc-shaped pipeline (501).

6. A multi-channel oil well valve according to claim 1, characterized in that: The valve core (6) comprises: a control shaft (601) which is sealably mounted in the center hole of the valve cover (2); the top of the control shaft (601) is connected to a control wheel or a control motor; the bottom of the control shaft (601) is fixedly connected to a control bevel gear (602); the control bevel gear (602) is transmission-connected to a plurality of blocking components (603) mounted in the valve housing (1); the plurality of blocking components (603) are arranged one by one opposite to the plurality of access pipes (101).

7. A multi-channel oil well valve according to claim 6, characterized in that: The sealing component (603) comprises: a lead screw (604) and a transverse axis (605) which are parallelly mounted on the inner wall of the valve housing (1); the lead screw (604) and the transverse axis (605) are both mounted on a bracket (606) on the bottom surface of the valve housing (1); a transmission bevel gear (607) fixed on the lead screw (604) is meshed with a control bevel gear (602); the lead screw (604) is screwed on the sealing component (608); and the transverse axis (605) is slidably mounted on the sealing component (608).

8. A multi-channel oil well valve according to claim 7, characterized in that: The plugging member (608) comprises: a conical plug (609) coaxially arranged on the inner side of the access tube (101); the conical plug (609) is sealingly slidably arranged on the guide tube (610); a round seat (611) fixed on the guide tube (610) is rotatably arranged on a displacement frame (612); the displacement frame (612) screwed on the lead screw (604) is slidably connected to the transverse axis (605); a compression spring (613) is fixedly connected between the conical plug (609) and the round seat (611); a plurality of guide holes (614) are arranged on the guide tube (610) between the conical plug (609) and the round seat (611); when the distance between the conical plug (609) and the round seat (611) is less than a preset value, the guide holes (614) on the guide tube (610) are inserted into the inner side of the conical plug (609).

9. A multi-channel oil well valve according to claim 8, characterized in that: The sealing member (608) further comprises: a sprocket wheel 1 fixedly connected to the lead screw (604); the sprocket wheel 1 is connected to a sprocket wheel 2 fixedly connected to the transverse shaft (605) via a chain 1; an axial sliding groove on the transverse shaft (605) is slidably matched with a sliding block fixedly connected to the rotating tube (615); the rotating tube (615) rotated on the displacement frame (612) is sleeved on the outside of the transverse shaft (605); and a sprocket wheel 3 fixedly connected to the rotating tube (615) is connected to a sprocket wheel 4 fixedly connected to the end of the round seat (611) away from the guide tube (610) via a chain 2.

10. A multi-channel oil well valve according to claim 9, characterized in that: The inner end of the access pipe (101) is provided with an inner conical surface that matches the outer conical surface of the conical plug (609), and the inner conical surface is also provided with a sealing structure (7) for abutting against the outer conical surface of the conical plug (609).

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