Multifunctional spherical control valve for oil-gas manifold

Abstract

A multifunctional spherical control valve for an oil and gas manifold comprises a valve body, a medium flow channel, a valve rod, a valve element fixedly connected with the valve rod and valve seats arranged on the two sides of the valve element are arranged in the valve body, the valve body is provided with an opening communicated with the medium flow channel, a valve deck detachably connected with the valve body is arranged on the outer side of the opening, the opening is located between the valve seats, and the valve deck is located between the valve seats. By means of the side-mounted valve body and the side-mounted valve cover, daily maintenance is simple, convenient and fast, the whole valve does not need to be detached from a pipeline, particularly, sealing key parts such as an actuator and a valve rod seal do not need to be detached, and the valve cover and the valve body are not required to be detached. The position of the opening of the valve cover is specially designed between the valve seats, so that the sealing performance of the valve seats is not affected when adjustment is carried out in the valve body, and various working condition changes can be flexibly coped with.

Description

Technical Field

[0001] The invention relates to a spherical control valve for a multifunctional oil and gas manifold, belonging to the field of valves. Background Art

[0002] A ball valve is a valve whose opening and closing parts are driven by the valve stem and rotate around the axis of the ball valve. Its working principle is that when the ball valve rotates 90 degrees, the inlet and outlet should all present spherical surfaces, thereby closing the valve and cutting off the flow of the medium; when the ball valve rotates 90 degrees, the inlet and outlet should all present ball mouths, thereby opening the flow, and there is basically no flow resistance.

[0003] After the valve core is assembled, the valve shell of the non-detachable ball valve will be welded. Although this type of ball valve has a good sealing effect, it cannot be disassembled for maintenance. Once damaged, it can only be completely replaced or the valve shell must be cut, which is time-consuming and laborious. The detachable ball valve generally uses threaded connection and flange connection to close the valve shell. The threaded connection method is generally only suitable for small ball valves. When the valve core is installed, the valve shells rotate with each other and are closed by threads. For some large ball valves, in order to ensure the stability of the connection, the valve shell closure method of flange connection is generally adopted. However, there are generally dozens of bolts on the flange of this large ball valve. When disassembling and assembling, all of these dozens of bolts need to be unscrewed or installed, which is very inconvenient. It will also affect key parts such as the actuator and valve stem, which is not conducive to the normal use of the valve. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a multifunctional ball control valve for an oil and gas manifold.

[0005] A multifunctional ball control valve for oil and gas pipelines comprises a valve body, wherein the valve body is provided with a medium flow channel, a valve stem, a valve core fixedly connected to the valve stem and valve seats arranged on both sides of the valve core, the valve body is provided with an opening communicated with the medium flow channel, a valve cover detachably connected to the valve body is provided on the outer side of the opening, the opening is located between the valve seats, so that the valve cover and the valve body can adjust the internal components of the valve body through the opening when the valve cover is separated, and daily maintenance is simple, convenient and fast through the side-mounted valve body and valve cover, and there is no need to remove the entire valve from the pipeline, especially there is no need to disassemble and assemble key sealing parts such as the actuator and valve stem seal, the position of the valve cover opening is specially designed between the valve seats, so that when the valve body is adjusted, the sealing performance of the valve seat will not be affected, and various working conditions can be flexibly responded to.

[0006] Preferably, the valve cover is detachably connected to the valve body by bolts, a positioning groove is provided on one side of the valve body, a positioning ring is provided on the valve cover, and the valve cover is positioned by the positioning ring and the positioning groove. The combined design of the positioning ring and the positioning groove can ensure the precise alignment of the valve cover during installation. This mechanism ensures the fit between the valve cover and the valve body, thereby improving the sealing performance of the valve and preventing medium leakage. The design of bolt connection and positioning ring makes the installation and removal process of the valve cover easier, and the operator can complete the fixing or removal of the valve cover through simple steps, thereby greatly improving work efficiency.

[0007] Preferably, the valve core is provided with a connecting groove so that the cross section of the valve core is in the shape of an L-shaped sphere, and the medium flow channel includes flow channel A, flow channel B and flow channel C located in three different directions, and any two of the flow channels A, B and C can be connected to each other. The valve core adjusts the direction of the connecting groove by rotating to control the connection state of flow channels A, B and C. By rotating the L-shaped valve core, the connection state between the three flow channels A, B and C can be accurately controlled to achieve a variety of different fluid path combinations. The design of the L-shaped valve core makes the contact area between the valve core and the flow channel larger, reduces the possibility of fluid leakage, and improves the control accuracy and efficiency. The valve core adopts an L-shaped flow channel, and the movement direction and angle of the valve core can be controlled by remote control or wired centralized control, which can be used for accurate control of the flow direction of the manifold medium.

[0008] Furthermore, the A flow channel and the B flow channel are arranged opposite to each other, and the valve cover is arranged opposite to the C flow channel. Since the valve cover and the C flow channel are arranged opposite to each other, it is convenient to disassemble the valve cover for maintenance and overhaul, and it is convenient to replace the valve core, valve stem and other components, which simplifies the maintenance process and improves the maintenance efficiency.

[0009] Furthermore, a filter is provided in the A flow channel and the B flow channel, a slot and a first step are provided in the valve body, the slot is detachably mounted with a retaining ring through a tight fit, and the filter is installed in the valve body on both sides of the outer periphery through the retaining ring and the first step. The filter provided in the A flow channel and the B flow channel can effectively intercept impurities in the fluid, prevent impurities from entering the valve body, avoid wear on precision components such as the valve core and the valve stem, extend the life of the valve, and ensure the quality of the fluid. The tight fit design of the slot and the retaining ring makes the installation and removal of the filter simple and quick, without the need to use special tools, and the installation of the filter can be completed by simply inserting the retaining ring through the slot. When disassembling, it is only necessary to remove the retaining ring from the slot, which is convenient to operate and improves maintenance efficiency. The first step limits the outer periphery of the filter to ensure that the filter is firmly installed in the valve body, avoids loosening or falling off during operation, and improves the reliability of the filter. Since the installation and removal of the filter are very convenient, filters of different specifications can be replaced according to actual conditions to meet different filtering accuracy requirements and improve the adaptability of the system. By setting up the filter, impurities can be effectively prevented from entering the valve body, clogging the valve core, valve stem and other components, ensuring the normal operation of the valve and improving system stability.

[0010] Preferably, the valve body is provided with a second step, the valve seat is provided with a third step, the valve seat outer sleeve is provided with a spring seat located between the second step and the third step, the spring seat is provided with a mounting groove, the mounting groove is provided with a preload spring with one end abutting against the second step, and the valve seat is driven by the preload spring to form a sealed connection with the valve core. The design of the preload spring enables the valve seat to form a tight sealed connection with the valve core through elastic force. This adaptive sealing ability can effectively offset the change of the valve core position caused by temperature change, pressure fluctuation or working impact, ensure that the valve always maintains a good sealing state, and prevent medium leakage. The design of the second step and the third step provides a stable installation foundation for the preload spring, ensures its reliability under working conditions, prevents the spring from loosening due to strong fluid impact, and thus maintains the sealing performance of the valve. Since the sealing between the valve seat and the valve core depends on the elastic force of the preload spring, the disassembly and maintenance of the valve seat are also simpler. When the valve seat or spring needs to be maintained, the valve seat can be removed more easily without replacing the entire valve, reducing the difficulty of maintenance.

[0011] Furthermore, the valve seat sleeve is provided with an adjustment ring located behind the spring seat, and the spring seat is provided with a protrusion abutting against one side of the adjustment ring. The adjustment ring is threadedly connected to the valve seat so that the adjustment ring controls the preload force of the preload spring by adjusting the position. The valve seat structure that can be adjusted and maintained online can realize the functions of conventional ball valve cutoff, isolation, and discharge. The setting of the adjustment ring allows the user to flexibly adjust the preload force of the preload spring according to different working conditions, thereby changing the sealing pressure between the valve core and the valve seat. This flexibility allows the valve to be optimized under different fluid properties and process requirements to ensure the best sealing performance. More precise fluid control can be achieved by finely adjusting the preload spring force through the adjustment ring. For example, it can be dynamically adjusted according to working conditions such as flow rate and pressure to cope with changing operating requirements.

[0012] Furthermore, the valve seat outer sleeve is connected with an O-ring located in front of the spring seat for sealing with the valve body. As an efficient sealing element, the O-ring can closely fit the contact surface between the valve seat and the valve body, provide a good sealing effect, and effectively prevent fluid leakage. The O-ring can be selected from different materials as needed to adapt to different media and temperature ranges, has strong compatibility, and can meet the needs of various application scenarios.

[0013] Preferably, a mounting hole is provided at the bottom of the valve body, a lower cover is fixedly installed in the mounting hole by screws, a boss is provided on the valve core, the valve stem extends into the boss and is fixedly connected to one end of the valve core, and the other end of the valve core is rotatably connected to the lower cover. A self-lubricating bearing is provided in the inner hole of the boss where the valve core and the lower cover are connected, and the lower cover can be firmly fixed to the valve body by providing a mounting hole at the bottom of the valve body and fixing the lower cover with screws. This design improves the stability and pressure resistance of the entire valve, while reducing the overall torque. The valve stem extends into the boss and is fixedly connected to one end of the valve core, ensuring a strong connection between the valve stem and the valve core during operation, reducing the risk of the valve stem falling off, loosening and flying out during operation, and improving the safety and reliability of operation.

[0014] Preferably, one end of the valve stem extends to the outside and is connected to an actuator, and a stuffing box located in the valve body is arranged around the outside of the valve stem, and a stuffing box for sealing is arranged in the stuffing box. The stuffing box is filled with stuffing for sealing, which can effectively prevent the leakage of fluid between the valve stem and the valve body, and ensure the dynamic sealing of the valve. Through the design of the stuffing box, the replacement and maintenance of the stuffing are relatively simple. The operator can easily check and replace the stuffing when necessary without disassembling the entire valve body. Through the connection of the actuator, it is also helpful to realize remote control and monitoring, and the operator can adjust the valve in a safe environment.

[0015] The beneficial effects of the present invention are as follows: through the side-mounted valve body and valve cover, daily maintenance is simple, convenient and quick. There is no need to remove the entire valve from the pipeline, especially there is no need to disassemble the actuator, valve stem seal and other key sealing parts. The position of the valve cover opening is specially designed between the valve seats, so that when the valve body is adjusted inside, it will not affect the sealing performance of the valve seat, and it can flexibly respond to various working conditions. The multifunctional ball control valve for oil and gas manifolds can simultaneously complete the three functions of cutoff, filtering and flow control, eliminating the need to separately install filters, cutoff valves and control valves on the pipeline. It greatly saves the investment and maintenance costs of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0017] Figure 1 It is the main structure diagram of the present invention;

[0018] Figure 2 It is a structural diagram of the side surface of the present invention;

[0019] Figure 3 for Figure 1 The structural diagram of AA in the middle;

[0020] Figure 4 for Figure 1 A magnified view of the detail at B in the middle;

[0021] Figure 5 for Figure 3 A magnified view of the details at C in the middle;

[0022] Figure 6 This is the structural diagram of flow direction 1;

[0023] Figure 7 This is the structural diagram of flow direction 2;

[0024] Figure 8 This is the structural diagram of flow direction 3;

[0025] Fig. 9 This is the structural diagram of flow direction 4;

[0026] In the figure, 1, valve body; 11, opening; 12, positioning groove; 13, clamping groove; 14, first step; 15, retaining ring; 16, second step; 17, mounting hole; 18, lower cover; 2, medium flow channel; 21, flow channel A; 22, flow channel B; 23, flow channel C; 24, filter screen; 3, valve cover; 31, positioning ring; 4, valve stem; 41, actuator; 42, stuffing box; 43, stuffing; 5, valve core; 51, connecting groove; 52, boss; 6, valve seat; 61, third step; 62, spring seat; 63, protrusion; 64, mounting groove; 65, preload spring; 66, adjusting ring; 67, O-ring. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0029] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are for explaining and understanding the present invention, but not for limiting the scope of protection of the present invention.

[0030] like Figure 1-9 As shown, an embodiment of a multifunctional ball control valve for oil and gas manifold of the present invention comprises a valve body 1, wherein the valve body 1 is provided with a medium flow channel 2, a valve stem 4, a valve core 5 fixedly connected to the valve stem 4, and valve seats 6 arranged on both sides of the valve core 5, the valve body 1 is provided with an opening 11 communicated with the medium flow channel 2, and a valve cover 3 detachably connected to the valve body 1 is arranged on the outer side of the opening 11, the opening 11 is located between the valve seats 6, so that the valve cover 3 and the valve body 1 can adjust the internal components of the valve body 1 through the opening 11 in a separated state, and daily maintenance is simple, convenient and fast through the side-mounted valve body 1 and the valve cover 3, and there is no need to remove the entire valve from the pipeline, especially there is no need to disassemble and assemble the actuator 41, the valve stem 4 seal and other key sealing parts, and the position of the opening 11 of the valve cover 3 is specially designed between the valve seats 6, so that when the valve body 1 is adjusted, the sealing performance of the valve seat 6 will not be affected, and various working conditions can be flexibly responded to.

[0031] The valve cover 3 is detachably connected to the valve body 1 by bolts, a positioning groove 12 is provided on one side of the valve body 1, and a positioning ring 31 is provided on the valve cover 3. The valve cover 3 is positioned by the positioning ring 31 and the positioning groove 12. The combination design of the positioning ring 31 and the positioning groove 12 can ensure the precise alignment of the valve cover 3 during the installation process. This mechanism ensures the tightness between the valve cover 3 and the valve body 1, thereby improving the sealing performance of the valve and preventing medium leakage. The design of bolt connection and positioning ring 31 makes the installation and removal process of the valve cover 3 simpler. The operator can complete the fixing or removal of the valve cover 3 through simple steps, thereby greatly improving the work efficiency.

[0032] The valve core 5 is provided with a connecting groove 51 so that the cross section of the valve core 5 is in the shape of an L-shaped sphere. The medium flow channel 2 includes an A flow channel 21, a B flow channel 22 and a C flow channel 23 located in three different directions. Any two of the A flow channel 21, the B flow channel 22 and the C flow channel 23 can be connected to each other. The valve core 5 adjusts the direction of the connecting groove 51 by rotating to control the connection state of the A flow channel 21, the B flow channel 22 and the C flow channel 23. By rotating the L-shaped valve core 5, the connection state between the three flow channels A, B and C can be accurately controlled to achieve a variety of different fluid path combinations. The design of the L-shaped valve core 5 makes the contact area between the valve core 5 and the flow channel larger, reduces the possibility of fluid leakage, and improves the control accuracy and efficiency. The valve core adopts an L-shaped flow channel. The movement direction and angle of the valve core can be controlled remotely or wired centrally, which can be used for accurate control of the flow direction of the manifold medium.

[0033] The A flow channel 21 and the B flow channel 22 are arranged opposite to each other, and the valve cover 3 and the C flow channel 23 are arranged opposite to each other. Since the valve cover 3 and the C flow channel 23 are arranged opposite to each other, it is convenient to disassemble the valve cover 3 for maintenance and overhaul, and it is convenient to replace the valve core 5, the valve stem 4 and other components, which simplifies the maintenance process and improves the maintenance efficiency.

[0034] A filter screen 24 is provided in the A flow channel 21 and the B flow channel 22, and a slot 13 and a first step 14 are provided in the valve body 1. The slot 13 is detachably installed with a retaining ring 15 through a tight fit, and the filter screen 24 is limitedly installed in the valve body 1 by the retaining ring 15 and the first step 14 on both sides of the outer periphery. The filter screen 24 provided in the A flow channel 21 and the B flow channel 22 can effectively intercept impurities in the fluid, prevent impurities from entering the interior of the valve body 1, avoid wear on precision components such as the valve core 5 and the valve stem 4, extend the life of the valve, and ensure the quality of the fluid. The tight fit design of the slot 13 and the retaining ring 15 makes the installation and removal of the filter screen 24 simple and quick, without the need for special tools, and the installation of the filter screen 24 can be completed by simply inserting the retaining ring 15 through the slot 13. When disassembling, it is only necessary to take the retaining ring 15 out of the slot 13, which is easy to operate and improves maintenance efficiency. The first step 14 limits the periphery of the filter 24, ensuring that the filter 24 is firmly installed in the valve body 1 to avoid loosening or falling off during operation, thereby improving the reliability of the filter 24. Since the installation and removal of the filter 24 are very convenient, the filter 24 of different specifications can be replaced according to actual conditions to meet different filtering accuracy requirements, thereby improving the adaptability of the system. By setting the filter 24, impurities can be effectively prevented from entering the interior of the valve body 1, clogging of the valve core 5, valve stem 4 and other components can be avoided, ensuring the normal operation of the valve and improving the stability of the system.

[0035] Flow direction 1: AC is connected, BC is blocked, and the medium in flow channel A flows;

[0036] Flow direction 1 turns 90° clockwise to flow direction 2

[0037] Flow direction 2: BC is connected, AC is blocked, and the medium in flow channel B flows;

[0038] Control of inlet reversal from flow direction 1 to flow direction 2;

[0039] Flow direction 1 turns 90° counterclockwise to flow direction 3

[0040] Flow direction 3: BC and AC are blocked, and the control valve cuts off the medium;

[0041] Flow direction 2 turns 90° clockwise, flow direction 3 turns 90° counterclockwise: convert to flow direction 4

[0042] Flow direction 4: BC and AC are blocked, and the control valve cuts off the medium;

[0043] Flow directions 3 and 4 realize the control of import and export cutoff;

[0044] The valve body 1 is provided with a second step 16, the valve seat 6 is provided with a third step 61, the valve seat 6 is provided with a spring seat 62 between the second step 16 and the third step 61, the spring seat 6 is provided with a mounting groove 64, the mounting groove 64 is provided with a preload spring 65 whose one end abuts the second step 16, and the valve seat 6 is driven by the preload spring 65 to form a sealed connection with the valve core 5. The design of the preload spring 65 enables the valve seat 6 to form a tight sealed connection with the valve core 5 through elastic force. This adaptive sealing ability can effectively offset the position change of the valve core 5 caused by temperature change, pressure fluctuation or working impact, ensure that the valve always maintains a good sealing state, and prevent medium leakage. The design of the second step 16 and the third step 61 provides a stable installation foundation for the preload spring 65, ensures its reliability under working conditions, prevents the spring from loosening due to strong fluid impact, and thus maintains the sealing performance of the valve. Since the sealing between the valve seat 6 and the valve core 5 depends on the elastic force of the preload spring 65, the disassembly and maintenance of the valve seat 6 are also easier. When the valve seat 6 or the spring needs to be maintained, the valve seat 6 can be removed more easily without replacing the entire valve, thereby reducing the difficulty of maintenance.

[0045] The valve seat 6 is provided with an adjustment ring 66 behind the spring seat 62. The spring seat 62 is provided with a protrusion 63 that abuts against one side of the adjustment ring 66. The adjustment ring 66 is threadedly connected to the valve seat 6 so that the adjustment ring 66 controls the preload force of the preload spring 65 by adjusting the position. The valve seat 6 structure that can be adjusted and maintained online can realize the functions of conventional ball valve cutoff, isolation, and discharge. The setting of the adjustment ring 66 allows the user to flexibly adjust the preload force of the preload spring 65 according to different working conditions, thereby changing the sealing pressure between the valve core 5 and the valve seat 6. This flexibility allows the valve to be optimized under different fluid characteristics and process requirements to ensure the best sealing performance. Through the fine adjustment of the preload force of the preload spring 65 by the adjustment ring 66, more precise fluid control can be achieved. For example, it can be dynamically adjusted according to working conditions such as flow rate and pressure to cope with changing operating requirements.

[0046] The valve seat 6 is connected to an O-ring 67 in front of the spring seat 62 for sealing with the valve body 1. As an efficient sealing element, the O-ring 67 can closely fit the contact surface between the valve seat 6 and the valve body 1, provide a good sealing effect, and effectively prevent fluid leakage. The O-ring 67 can be made of different materials as needed to adapt to different media and temperature ranges, has strong compatibility, and can meet the needs of various application scenarios.

[0047] The bottom of the valve body 1 is provided with a mounting hole 17, in which a lower cover 18 is fixedly installed by screws. The valve core 5 is provided with a boss 52, and the valve stem 4 extends into the boss 52 and is fixedly connected to one end of the valve core 5, and the other end of the valve core 5 is rotatably connected to the lower cover 18. The inner hole of the boss where the valve core and the lower cover are connected is provided with a self-lubricating bearing. By providing the mounting hole 17 at the bottom of the valve body 1 and fixing the lower cover 18 with screws, the lower cover 18 can be firmly fixed to the valve body 1. This design improves the stability and pressure resistance of the entire valve, while reducing the overall torque. The valve stem 4 extends into the boss 52 and is fixedly connected to one end of the valve core 5, ensuring a strong connection between the valve stem 4 and the valve core 5 during operation, reducing the risk of the valve stem 4 falling off, loosening and flying out during operation, and improving the safety and reliability of operation.

[0048] One end of the valve stem 4 extends to the outside and is connected to an actuator 41. A packing 43 box 42 located in the valve body 1 is arranged around the outside of the valve stem 4. The packing 43 box 42 is provided with a packing 43 for sealing. The packing 43 box 42 is filled with a packing 43 for sealing, which can effectively prevent the leakage of the fluid between the valve stem 4 and the valve body 1 and ensure the dynamic sealing of the valve. By designing the packing 43 box 42, the replacement and maintenance of the packing 43 are relatively simple. The operator can easily check and replace the packing 43 when necessary without disassembling the entire valve body 1. The connection of the actuator 41 also helps to achieve remote control and monitoring, and the operator can adjust the valve in a safe environment.

[0049] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

[0050] Although the invention has been described with reference to several specific embodiments, it should be understood that the invention is not limited to the specific embodiments disclosed. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A multifunctional ball control valve for oil and gas manifold, characterized by: The utility model comprises a valve body, wherein the valve body is provided with a medium flow channel, a valve stem, a valve core fixedly connected to the valve stem and valve seats arranged on both sides of the valve core; the valve body is provided with an opening connected to the medium flow channel; a valve cover detachably connected to the valve body is provided on the outer side of the opening; the opening is located between the valve seats, so that the valve cover and the valve body can adjust the internal components of the valve body through the opening when the valve cover and the valve body are separated.

2. The multifunctional ball control valve for oil and gas manifold according to claim 1, characterized in that: The valve cover is detachably connected to the valve body by bolts, a positioning groove is provided on one side of the valve body, a positioning ring is provided on the valve cover, and the valve cover is positioned by clamping the positioning ring and the positioning groove.

3. The multifunctional ball control valve for oil and gas manifold according to claim 1, characterized in that: The valve core is provided with a connecting groove so that the cross section of the valve core is in the shape of an L-shaped sphere. The medium flow channel includes an A flow channel, a B flow channel and a C flow channel located in three different directions. Any two of the A flow channel, the B flow channel and the C flow channel can be connected to each other. The valve core adjusts the direction of the connecting groove by a rotating action to control the connection state of the A flow channel, the B flow channel and the C flow channel.

4. The multifunctional ball control valve for oil and gas manifold according to claim 3, characterized in that: The A flow channel and the B flow channel are arranged opposite to each other, and the valve cover and the C flow channel are arranged opposite to each other.

5. The multifunctional ball control valve for oil and gas manifold according to claim 3, characterized in that: Filters are provided in the A and B flow channels, a slot and a first step are provided in the valve body, a retaining ring is detachably installed in the slot through tight fit, and the filter is installed in the valve body on both sides of the outer periphery through the retaining ring and the first step respectively.

6. The multifunctional ball control valve for oil and gas manifold according to claim 1, characterized in that: A second step is provided in the valve body, a third step is provided on the valve seat, a spring seat is provided outside the valve seat and is located between the second step and the third step, a mounting groove is provided in the spring seat, a preload spring is provided in the mounting groove and one end of the preload spring abuts against the second step, and the valve seat is driven by the preload elastic force of the preload spring to form a sealing connection with the valve core.

7. The multifunctional ball control valve for oil and gas manifold according to claim 7, characterized in that: The valve seat sleeve is provided with an adjustment ring located behind the spring seat, and the spring seat is provided with a protrusion abutting against one side of the adjustment ring. The adjustment ring is threadedly connected to the valve seat so that the adjustment ring controls the preload force of the preload spring by adjusting the position.

8. The multifunctional ball control valve for oil and gas manifold according to claim 6 or 7, characterized in that: The valve seat outer shell is connected with an O-ring located in front of the spring seat and is used for sealing connection with the valve body.

9. The multifunctional ball control valve for oil and gas manifold according to claim 1, characterized in that: A mounting hole is provided at the bottom of the valve body, a lower cover is fixedly installed in the mounting hole by screws, a boss is provided on the valve core, the valve stem extends into the boss and is fixedly connected to one end of the valve core, and the other end of the valve core is rotatably connected to the lower cover.

10. The multifunctional ball control valve for oil and gas manifold according to claim 1 or 9, characterized in that: One end of the valve stem extends to the outside and is connected to an actuator. A stuffing box located in the valve body is arranged around the outside of the valve stem, and a stuffing box for sealing is arranged in the stuffing box.

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