Top-mounted high-temperature-resistant ball valve

Abstract

The application discloses a top-mounted high-temperature-resistant ball valve, which comprises a communicating pipe, the inside of the communicating pipe is provided with a conveying cavity, the inside of the conveying cavity is rotatably provided with a ball valve body, the ball valve body is drivingly connected with a driving rod, the ball valve body is provided with a ball valve hole which is matched with the conveying cavity, the outer end surface of the ball valve body is embedded with a buffer layer, the width of the buffer layer is matched with the conveying cavity, the inside of the ball valve body is provided with an elastic sealing cavity, the inside of the elastic sealing cavity is filled with a buffer medium, the outer end surface of the ball valve body is provided with a communicating hole, and the elastic sealing cavity and the buffer layer are communicated through the communicating hole. The device can effectively reduce the problem that the service life of the existing ball valve is reduced due to the water hammer effect impact in the use process.

Description

Technical Field

[0001] This invention relates to the field of ball valve equipment technology, and in particular to a top-mounted high-temperature resistant ball valve. Background Technology

[0002] A ball valve is a valve in which the ball, the opening and closing element, is driven by the valve stem and rotates around the valve's axis. It can also be used for fluid regulation and control. Hard-seal V-type ball valves, with their V-shaped ball core and hard alloy-faced metal seat, possess strong shearing force, making them particularly suitable for media containing fibers or small solid particles. Multi-port ball valves in pipelines can flexibly control the merging, splitting, and switching of flow directions of media, and can also close any channel while connecting the other two. These valves should generally be installed horizontally in pipelines. Ball valves are classified according to their actuation method: pneumatic ball valves, electric ball valves, and manual ball valves. Ball valves are mainly used in pipelines for cutting off, distributing, and changing the flow direction of media; they require only a 90-degree rotation and a very small torque to achieve a tight seal.

[0003] Chinese Patent Publication No. CN219139885U discloses a ball valve, which includes: a valve body assembly; a valve core; a rotating component; and an operating component. The valve core is movably disposed inside the valve body assembly, the rotating component is movably mounted on the valve body assembly, and one end of the rotating component is tractably connected to the valve core. The operating component is operably connected to the other end of the rotating component. The rotating component includes a ball valve stem, a valve stem sealing ring, a valve stem ring, and a valve stem nut. The ball valve stem is mounted on the valve body assembly from the outside in. The valve stem sealing ring is mounted on one end of the valve stem. The valve stem ring is nested in the ball valve stem. The valve stem nut is nested in the valve stem and is fixedly mounted on the valve body assembly.

[0004] Since ball valves are mainly used as opening and closing components in fluids, existing ball valves often suffer from water hammer effects when the liquid fluid closes rapidly. This water hammer effect causes significant impact on the valve body and valve core, leading to valve core deformation and affecting the fitting clearance. Consequently, frequent water hammer impacts will rapidly reduce the service life of the valve body and the opening and closing effect.

[0005] Therefore, it is necessary to provide a top-mounted high-temperature resistant ball valve to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a top-mounted high-temperature resistant ball valve to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a top-mounted high-temperature resistant ball valve, comprising a connecting pipe, a conveying cavity at the beginning of the connecting pipe, a ball valve body rotatably mounted inside the conveying cavity, a drive rod drivingly connected to the ball valve body, a ball valve hole through the beginning of the ball valve body adapted to the conveying cavity, and a buffer layer embedded on the outer end face of the ball valve body, the width of the buffer layer being adapted to the conveying cavity.

[0008] Furthermore, the buffer layer is distributed in a ring on the outer end face of the ball valve body, and the position of the buffer layer corresponds to the delivery cavity. As the ball valve body rotates and the ball valve hole and delivery cavity are misaligned, the buffer layer gradually rotates to communicate with the delivery cavity, and the interior of the communication pipe is provided with a rotating mounting groove that is compatible with the ball valve body.

[0009] As a further embodiment of the present invention, the ball valve body has an elastic sealing cavity inside, the elastic sealing cavity is filled with a buffer medium, and the outer end face of the ball valve body has a connecting hole, the elastic sealing cavity and the buffer layer are connected through the connecting hole.

[0010] Furthermore, the diameter of the connecting hole can be adaptively adjusted according to buffering needs.

[0011] As a further embodiment of the present invention, the ball valve body is provided with an elastic sealing layer inside, and an elastic sealing cavity is formed between the elastic sealing layer and the inner wall of the ball valve body. The elastic sealing layer is made of elastic rubber material.

[0012] As a further embodiment of the present invention, the buffer layer includes a buffer cavity and a flexible sealing bladder. The flexible sealing bladder is distributed in a ring on the outer end face of the ball valve body and is embedded in the outer surface of the ball valve body. The buffer cavity is disposed inside the flexible sealing bladder and is connected to the elastic sealing cavity through a connecting hole.

[0013] Furthermore, the flexible sealing bladder is arranged in the form of an annular strip, and the flexible sealing bladder is provided with a connecting hole that is adapted to the ball valve hole.

[0014] As a further embodiment of the present invention, the buffer medium is specifically a non-Newtonian fluid, and the inner wall of the ball valve orifice is rotatably provided with a turbulence mechanism for uniformly distributing the buffer medium.

[0015] Furthermore, buffer media include, but are not limited to, concentrated solutions and suspensions of polymers.

[0016] As a further embodiment of the present invention, the turbulence mechanism includes a support member, a rotating sealing ring, and a rotating tube. The rotating tube is rotatably embedded in the inner wall of the ball valve hole through the rotating sealing ring. The support member is fixedly connected to the side of the support member away from the ball valve hole, and the support member extends through the elastic sealing layer into the interior of the elastic sealing cavity.

[0017] Furthermore, the elastic sealing layer is fixedly connected to the outer end face of the support member, and the end of the elastic sealing layer is fixedly connected to the rotating sealing ring, so that the elastic sealing layer can rotate synchronously with the rotating sealing ring to ensure the airtightness of the elastic sealing cavity. The support member can be a support rod or a support plate.

[0018] As a further embodiment of the present invention, the inner wall of the rotating tube is provided with a sliding groove, and a guide plate is slidably connected inside the sliding groove. One end of the guide plate extends into the inside of the ball valve hole, and the end of the guide plate away from the ball valve hole is connected to the elastic sealing layer. The guide plate is inclined relative to the opening axis of the ball valve hole. Multiple sets of guide plates are provided, and the multiple guide plates are symmetrically arranged with respect to the center of the ball valve hole.

[0019] Furthermore, when the ball valve body is closed, the internal pressure of the elastic sealing cavity is released, the guide plate is flush with the surface of the ball valve orifice, and the guide plate is located between the support members. When the ball valve body is open, the pressure inside the elastic sealing cavity increases due to the positioning and support of the support members, which increases the pressure of the elastic sealing layer between the support members, thereby causing the elastic sealing layer to undergo elastic deformation. This, in turn, pushes the guide plate to form a displacement and protrude from the surface of the ball valve orifice. By supporting and positioning the elastic sealing layer through the support members, the deformation of the elastic sealing layer when the internal pressure of the elastic sealing cavity increases is controllable.

[0020] In this invention, to avoid the impact of water hammer effect on the ball valve body when the valve is opened or closed, a buffer layer is provided. The buffer layer is embedded on the outer end face of the ball valve body and is distributed in a ring. Since the buffer layer is adapted to the width of the delivery cavity, when the ball valve body is open, the buffer layer is embedded in the inner wall of the ball valve body and the connecting pipe, buffering the ball valve body and the connecting pipe. This avoids frequent collisions between the ball valve body and the inner wall of the connecting pipe, which would cause deformation and wear of the ball valve body and reduce its service life. When the ball valve body is closed, the ball valve hole is disconnected from the delivery cavity. The buffer layer rotates with the ball valve body and then connects with the delivery cavity. This can buffer the impact force of the liquid water hammer effect when the valve is closed, thereby reducing the impact damage of the water hammer effect on the ball valve body and improving the service life and closing effect of the device. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the ball valve body structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the ball valve body in a sealed state according to the present invention;

[0025] Figure 4 This is the invention Figure 3 Enlarged lower structural diagram at point A;

[0026] Figure 5 This is a schematic diagram of the turbulence-disrupting mechanism of the present invention;

[0027] Figure 6 This is the invention Figure 5 Enlarged view of section B shows the structural intent;

[0028] Figure 7 This is a schematic diagram of the cross-sectional structure of the ball valve body in the conducting state of the present invention;

[0029] Figure 8 This is the invention Figure 7 Enlarged structural diagram at point C;

[0030] Figure 9 This is a cross-sectional structural diagram of the ball valve body in the conducting state of the present invention;

[0031] Figure 10 This is the invention Figure 9 Enlarged structural diagram at point D.

[0032] In the diagram: 1. Connecting pipe; 2. Drive rod; 3. Ball valve body; 4. Delivery chamber; 5. Buffer layer; 6. Ball valve orifice; 7. Turbulence mechanism; 8. Elastic sealing cavity; 9. Elastic sealing layer; 10. Support component; 11. Buffer cavity; 12. Flexible sealing bladder; 13. Connecting hole; 14. Rotating sealing ring; 15. Sliding groove; 16. Rotating pipe; 17. Guide vane. Detailed Implementation

[0033] Example 1

[0034] like Figure 1 - Figure 3 As shown, a top-mounted high-temperature resistant ball valve includes a connecting pipe 1, a conveying chamber 4 inside the connecting pipe 1, a ball valve body 3 rotatably mounted inside the conveying chamber 4, a drive rod 2 drivingly connected to the ball valve body 3, a ball valve hole 6 through the ball valve body 3 that is adapted to the conveying chamber 4, and a buffer layer 5 embedded on the outer end face of the ball valve body 3, the width of the buffer layer 5 being adapted to the conveying chamber 4.

[0035] Furthermore, the buffer layer 5 is distributed in a ring on the outer end face of the ball valve body 3, and the position of the buffer layer 5 corresponds to the delivery cavity 4. As the ball valve body 3 rotates and the ball valve hole 6 is offset from the delivery cavity 4, the buffer layer 5 gradually rotates to communicate with the delivery cavity 4, and the interior of the connecting pipe 1 is provided with a rotating mounting groove that is compatible with the ball valve body 3.

[0036] In use, to avoid the impact of water hammer effect on the ball valve body 3 when the valve is opened or closed, a buffer layer 5 is provided. The buffer layer 5 is embedded in the outer end face of the ball valve body 3 and is distributed in a ring. Since the width of the buffer layer 5 is adapted to the width of the conveying cavity 4, when the ball valve body 3 is open, the buffer layer 5 is embedded in the inner wall of the ball valve body 3 and the connecting pipe 1, which buffers the ball valve body 3 and the connecting pipe 1. This avoids the ball valve body 3 from being deformed and worn down due to frequent collisions with the inner wall of the connecting pipe 1, thus reducing its service life. When the ball valve body 3 is closed, the ball valve hole 6 is disconnected from the conveying cavity 4. The buffer layer 5 rotates with the ball valve body 3 and is connected to the conveying cavity 4. This can buffer the impact force of the liquid water hammer effect when the valve is closed, thereby reducing the impact damage of the water hammer effect on the ball valve body 3 and improving the service life and closing effect of the device.

[0037] Example 2

[0038] Based on Example 1, such as Figure 1 - Figure 4 As shown, the ball valve body 3 has an elastic sealing cavity 8 inside, which is filled with a buffer medium. The outer end face of the ball valve body 3 has a connecting hole 13, and the elastic sealing cavity 8 and the buffer layer 5 are connected through the connecting hole 13.

[0039] Furthermore, the diameter of the connecting hole 13 can be adaptively adjusted according to the buffering requirements.

[0040] In use, to further improve the buffering effect of the buffer layer 5, an elastic sealing cavity 8 is provided. The elastic sealing cavity 8 can provide a certain internal pressure to the buffer layer 5, thereby improving the buffering effect between the ball valve body 3 and the connecting pipe 1 when the ball valve body 3 is open. At the same time, when the ball valve body 3 is closed, the elastic sealing cavity 8 can also provide internal pressure to the buffer layer 5, further improving the impact resistance of the buffer layer 5. The elastic sealing cavity 8 and the buffer layer 5 are connected by a connecting hole 13. When liquid impact occurs, the buffer medium enters the elastic sealing cavity 8 from the buffer layer 5 through the ball valve body 3. By controlling the size of the connecting hole 13, such as setting the connecting hole 13 as a micropore, the buffer medium can be filtered while the pressure is released through the micropore, which can further improve the buffering effect of the buffer layer 5 against the water hammer effect, thereby effectively reducing the impact of the water hammer effect on the valve body when the valve is opened and closed.

[0041] like Figure 1 - Figure 5 As shown, the ball valve body 3 has an elastic sealing layer 9 inside, and an elastic sealing cavity 8 is formed between the elastic sealing layer 9 and the inner wall of the ball valve body 3. The elastic sealing layer 9 can be made of elastic rubber.

[0042] In use, the ball valve body 3 has an elastic sealing layer 9 inside. The elasticity of the material of the elastic sealing layer 9 provides internal pressure to the elastic sealing cavity 8. When the ball valve body 3 is in the open state, the increased internal pressure of the elastic sealing cavity 8 compresses the elastic sealing layer 9. When the ball valve body 3 is in the closed state, part of the pressure inside the elastic sealing cavity 8 is released into the buffer layer 5 to provide a buffering effect.

[0043] like Figure 1 - Figure 6 As shown, the buffer layer 5 includes a buffer cavity 11 and a flexible sealing bladder 12. The flexible sealing bladder 12 is distributed in a ring on the outer end face of the ball valve body 3 and is embedded in the outer surface of the ball valve body 3. The buffer cavity 11 is disposed inside the flexible sealing bladder 12 and is connected to the elastic sealing cavity 8 through the connecting hole 13.

[0044] Furthermore, the flexible sealing bladder 12 is arranged in an annular strip, and the flexible sealing bladder 12 is provided with a connecting hole that is adapted to the ball valve hole 6.

[0045] In use, to improve the buffering effect of the buffer layer 5, the buffer layer 5 is configured as a buffer cavity 11 and a flexible sealing bladder 12. The flexible sealing bladder 12 is wrapped around the outer surface of the ball valve body 3, and a closed buffer cavity 11 is formed between the flexible sealing bladder 12 and the outer end face of the ball valve body 3. The buffer cavity 11 is filled with buffer medium through the connecting hole 13. So when the ball valve body 3 is closed, the buffer cavity 11 in the part of the flexible sealing bladder 12 that is in contact with the delivery cavity 4 is adaptively filled with buffer medium. Thus, through the pressure of the buffer medium and the connecting hole 13, a better buffering effect can be achieved when the ball valve body 3 is closed.

[0046] like Figure 1 - Figure 6 As shown, the buffer medium is specifically a non-Newtonian fluid, and the inner wall of the ball valve orifice 6 is provided with a turbulence mechanism 7 for uniformly distributing the buffer medium.

[0047] Furthermore, buffer media include, but are not limited to, concentrated solutions and suspensions of polymers.

[0048] In use, the buffer medium is set to a non-Newtonian fluid. When the buffer medium is located inside the buffer chamber 11, compared to traditional elastic and hydraulic buffers, the non-Newtonian fluid undergoes plastic deformation under external force, meaning the arrangement of fluid particles changes. When the external force disappears, the fluid returns to its original state, thus reducing the vibration generated by the impact. Furthermore, due to the viscoelastic properties of the fluid, its viscosity changes with stress. When the external force is small, the viscosity is low, and the fluid flows easily; while when the external force is large, the viscosity increases rapidly, and the fluid becomes viscous, thus slowing the propagation speed of the impact force and reducing vibration. Simultaneously, the non-Newtonian fluid exhibits a flow-spreading effect. Combined with the fact that the fluid needs to slowly enter the elastic sealed cavity 8 through the connecting hole 13 during buffering, the fluid particles form a certain arrangement structure during the fluid flow, similar to microscopic layer-by-layer sliding, thereby hindering the propagation of the impact force and the diffusion of vibration.

[0049] like Figure 1 - Figure 5 As shown, the turbulence mechanism 7 includes a support member 10, a rotating sealing ring 14, and a rotating tube 16. The rotating tube 16 is rotatably embedded in the inner wall of the ball valve hole 6 through the rotating sealing ring 14. The support member 10 is fixedly connected to the side of the support member 10 away from the ball valve hole 6, and the support member 10 extends through the elastic sealing layer 9 into the interior of the elastic sealing cavity 8.

[0050] Furthermore, the elastic sealing layer 9 is fixedly connected to the outer end face of the support member 10, and the end of the elastic sealing layer 9 is fixedly connected to the rotating sealing ring 14, so that the elastic sealing layer 9 can rotate synchronously with the rotating sealing ring 14 to ensure the airtightness of the elastic sealing cavity 8. The support member 10 can be a support rod or a support plate.

[0051] In use, a rotating tube 16 is provided. By controlling the rotating tube 16, the support member 10 can be driven to rotate synchronously. Since the support member 10 extends into the interior of the elastic sealing cavity 8, the buffer medium, i.e., the non-Newtonian fluid, inside the elastic sealing cavity 8 can be uniformly stirred, thereby avoiding the non-Newtonian fluid from settling and stratifying due to long-term static placement of the valve body, which would reduce the buffering performance.

[0052] like Figure 1 - Figure 10 As shown, a sliding groove 15 is provided on the inner wall of the rotating tube 16. A guide plate 17 is slidably connected inside the sliding groove 15. One end of the guide plate 17 extends into the inside of the ball valve hole 6. The end of the guide plate 17 away from the ball valve hole 6 is connected to the elastic sealing layer 9. The guide plate 17 is inclined relative to the opening direction axis of the ball valve hole 6. Multiple sets of guide plates 17 are provided. The multiple guide plates 17 are symmetrically arranged around the center of the ball valve hole 6.

[0053] Furthermore, when the ball valve body 3 is closed, the internal pressure of the elastic sealing cavity 8 is released, the guide plate 17 is flush with the surface of the ball valve hole 6, and the guide plate 17 is located between the support members 10. When the ball valve body 3 is open, the pressure inside the elastic sealing cavity 8 increases due to the positioning and support of the support members 10, which increases the pressure of the elastic sealing layer 9 between the support members 10, thereby causing the elastic sealing layer 9 to undergo elastic deformation. This, in turn, pushes the guide plate 17 to displace and protrude from the surface of the ball valve hole 6. The support members 10 support and position the elastic sealing layer 9, so that the deformation of the elastic sealing layer 9 is controllable when the internal pressure of the elastic sealing cavity 8 increases.

[0054] When in use, when the ball valve body 3 is closed, the pressure inside the elastic sealing cavity 8 is released into the buffer cavity 11. At this time, the elastic sealing layer 9 does not deform, and the guide plate 17 is flush with the inner wall of the ball valve hole 6. When the ball valve body 3 is open, the buffer medium inside the buffer cavity 11 enters the interior of the elastic sealing cavity 8, which increases the pressure inside the elastic sealing cavity 8, causing the elastic sealing layer 9 to deform elastically, thereby pushing the guide plate 17 to protrude from the surface of the ball valve hole 6. Since the guide plate 17 is inclined relative to the opening direction of the ball valve hole 6, it drives the rotating tube 16 to rotate under the drive of the liquid flow inside the ball valve hole 6. Thus, the rotating tube 16 can rotate without additional power, making the device structure more streamlined. When the ball valve body 3 is closed, the buffer medium inside the elastic sealing cavity 8 is evenly distributed, which can effectively resist the impact of water hammer effect.

[0055] Furthermore, when the ball valve body 3 is closed, the pressure inside the buffer chamber 11 changes due to the pressure variations of the water flow, and the medium inside the elastic sealing chamber 8 still has a certain flow pressure. However, to prevent the buffer medium inside the elastic sealing chamber 8 from settling after the ball valve body 3 has been closed for a long time, which would make it difficult to open the ball valve body 3, the support member 10 can be made of magnetic material. By setting a magnetic ring outside the connecting pipe 1, after the ball valve body 3 has been closed for a long time, since the ball valve hole 6 and the delivery chamber 4 are perpendicularly distributed when the ball valve body 3 is closed, the magnetic ring can be placed on the side of the connecting pipe 1 and rotated. This will cause the support member 10 to rotate inside the elastic sealing chamber 8 through magnetic force, thereby gradually restoring the fluidity of the medium inside the elastic sealing chamber 8 and the buffer chamber 11, thus restoring the device to an effective working state.

[0056] Working Principle: To avoid the impact of water hammer effect on the ball valve body 3 when the valve is opened or closed, a buffer layer 5 is provided. The buffer layer 5 is embedded in the outer end face of the ball valve body 3 and is distributed in a ring. Since the width of the buffer layer 5 is adapted to the width of the conveying cavity 4, when the ball valve body 3 is open, the buffer layer 5 is embedded in the inner wall between the ball valve body 3 and the connecting pipe 1, buffering the ball valve body 3 and the connecting pipe 1. This avoids frequent collisions between the ball valve body 3 and the inner wall of the connecting pipe 1, which would cause deformation and wear of the ball valve body 3 and reduce its service life. When the ball valve body 3 is closed, the ball valve hole 6 is disconnected from the conveying cavity 4. The buffer layer 5 rotates with the ball valve body 3 and is connected to the conveying cavity 4. This further buffers the impact force of the liquid water hammer effect when the valve is closed, thereby reducing the impact damage of the water hammer effect on the ball valve body 3, improving the service life and closing effect of the device. To further improve the buffering effect of the buffer layer 5, an elastic sealing cavity 8 is provided. The elastic sealing cavity 8 can provide a certain internal space for the buffer layer 5. The pressure enhances the buffering effect between the ball valve body 3 and the connecting pipe 1 when the ball valve body 3 is open. Simultaneously, when the ball valve body 3 is closed, the elastic sealing cavity 8 provides internal pressure to the buffer layer 5, further improving the buffer layer 5's resistance to impact. The elastic sealing cavity 8 and the buffer layer 5 are connected by a connecting hole 13. During liquid impact, the buffer medium enters the elastic sealing cavity 8 through the ball valve body 3 from the buffer layer 5. By controlling the size of the connecting hole 13, such as setting it to a micropore, the buffer medium can be filtered while pressure is released through the micropore, further improving the buffering effect of the buffer layer 5 against water hammer. This effectively reduces the impact of water hammer on the valve body during valve opening and closing. The ball valve body 3 has an internal elastic sealing layer 9. The elastic properties of the elastic sealing layer 9 provide internal pressure to the elastic sealing cavity 8. When the ball valve body 3 is open, the increased internal pressure of the elastic sealing cavity 8 compresses the elastic sealing layer 9. When the ball valve body 3 is closed... The pressure inside the elastic sealing cavity 8 is partially released into the interior of the buffer layer 5 to provide a buffering effect. To improve the buffering effect of the buffer layer 5, the buffer layer 5 is configured as a buffer cavity 11 and a flexible sealing bladder 12. The flexible sealing bladder 12 wraps around the outer surface of the ball valve body 3, and a closed buffer cavity 11 is formed between the flexible sealing bladder 12 and the outer end face of the ball valve body 3. The buffer cavity 11 is filled with a buffer medium through the connecting hole 13. Thus, when the ball valve body 3 is closed, the interior of the buffer cavity 11, where the flexible sealing bladder 12 is in contact with the delivery cavity 4, is adaptively filled with a buffer medium. Therefore, through the pressure of the buffer medium and the connecting hole 13, a better buffering effect can be achieved when the ball valve body 3 is closed. The buffer medium is set as a non-Newtonian fluid. When the buffer medium is located inside the buffer cavity 11, compared with traditional elastic buffering and hydraulic buffering, the non-Newtonian fluid will undergo plastic deformation when subjected to external force, that is, the arrangement structure between fluid particles will change. When the external force disappears, the fluid will return to its original state, thereby reducing the vibration caused by the impact force. Furthermore, due to the viscoelastic properties of the fluid, its viscosity changes with stress.When the external force is small, the viscosity is low, and the fluid flows easily. However, when the external force is large, the viscosity increases rapidly, and the fluid becomes viscous, thus slowing down the propagation speed of the impact force and reducing vibration. Simultaneously, non-Newtonian fluids exhibit a flow-spreading effect. Combined with the fact that the fluid needs to slowly enter the elastic sealing cavity 8 through the connecting hole 13 during buffering, fluid particles form a certain arrangement structure during the fluid flow, similar to microscopic layer sliding, thereby hindering the propagation of the impact force and the diffusion of vibration. A rotating tube 16 is provided; by controlling the rotating tube 16, the support member 10 can be rotated synchronously. Since the support member 10 extends partially into the interior of the elastic sealing cavity 8, it can uniformly agitate the buffer medium (i.e., the non-Newtonian fluid) inside the elastic sealing cavity 8. To prevent the non-Newtonian fluid from settling and stratifying due to prolonged static placement of the valve body, thus reducing buffering performance, when the ball valve body 3 is closed, the internal pressure of the elastic sealing cavity 8 is released. The guide vane 17 is flush with the surface of the ball valve orifice 6 and is located between the support members 10. Through the positioning and support of the support members 10, when the ball valve body 3 is open, the internal pressure of the elastic sealing cavity 8 increases, which increases the pressure of the elastic sealing layer 9 between the support members 10, causing the elastic sealing layer 9 to undergo elastic deformation. This, in turn, pushes the guide vane 17 to displace and protrude from the surface of the ball valve orifice 6. Through the support members 10 supporting and positioning the elastic sealing layer 9, the deformation of the elastic sealing layer 9 when the internal pressure of the elastic cavity 8 increases is controllable. When the ball valve body 3 is closed, the internal pressure of the elastic cavity 8 is released to the buffer. Inside cavity 11, the elastic sealing layer 9 remains unchanged, and the guide plate 17 is flush with the inner wall of the ball valve hole 6. When the ball valve body 3 is open, the buffer medium inside the buffer cavity 11 enters the elastic sealing cavity 8, causing the pressure inside the elastic sealing cavity 8 to increase, resulting in elastic deformation of the elastic sealing layer 9. This pushes the guide plate 17 to protrude from the surface of the ball valve hole 6. Because the guide plate 17 is tilted relative to the opening direction of the ball valve hole 6, it drives the rotating tube 16 to rotate under the drive of the liquid flow inside the ball valve hole 6. This allows the rotating tube 16 to rotate without additional power, making the device structure more streamlined. When the ball valve body 3 moves from open to closed, the buffer medium inside the elastic sealing cavity 8 is evenly distributed, effectively resisting the impact of water hammer. When the main body 3 is closed, the buffer chamber 11 is subject to changes in water pressure, and its internal pressure also changes continuously. As a result, the medium inside the elastic sealing chamber 8 still has a certain flow pressure. However, in order to avoid the sedimentation of the buffer medium inside the elastic sealing chamber 8 after the ball valve body 3 has been closed for a long time, which would make it difficult to open the ball valve body 3, the support 10 can be made of magnetic material. By setting a magnetic ring outside the connecting pipe 1, after the ball valve body 3 has been closed for a long time, since the ball valve hole 6 and the delivery chamber 4 are perpendicularly distributed when the ball valve body 3 is closed, the magnetic ring can be placed on the side of the connecting pipe 1 and rotated. The magnetic force can drive the support 10 to rotate inside the elastic sealing chamber 8, thereby gradually restoring the fluidity of the medium inside the elastic sealing chamber 8 and the buffer chamber 11, thus restoring the device to an effective working state.

Claims

1. A top-mounted high-temperature resistant ball valve, comprising a connecting pipe, characterized in that: The connecting pipe has a conveying cavity inside, and a ball valve body is rotatably installed inside the conveying cavity. The ball valve body is driven by a drive rod. The ball valve body has a ball valve hole that is adapted to the conveying cavity. A buffer layer is embedded on the outer end face of the ball valve body. The width of the buffer layer is adapted to the conveying cavity. The ball valve body has an elastic sealing cavity inside, which is filled with a buffer medium. The outer end face of the ball valve body has a connecting hole, and the elastic sealing cavity is connected to the buffer layer through the connecting hole. The ball valve body has an internal elastic sealing layer, and an elastic sealing cavity is formed between the elastic sealing layer and the inner wall of the ball valve body. The elastic sealing layer is made of elastic rubber. The buffer medium is specifically a non-Newtonian fluid, and the inner wall of the ball valve orifice is rotatably provided with a turbulence mechanism for uniformly distributing the buffer medium. The turbulence mechanism includes a support member, a rotating sealing ring, and a rotating tube. The rotating tube is rotatably embedded in the inner wall of the ball valve hole through the rotating sealing ring. The support member is fixedly connected to the side of the rotating tube away from the ball valve hole, and the support member extends through the elastic sealing layer into the interior of the elastic sealing cavity.

2. The top-mounted high-temperature resistant ball valve according to claim 1, characterized in that: The buffer layer includes a buffer cavity and a flexible sealing bladder. The flexible sealing bladder is distributed in a ring on the outer end face of the ball valve body and is embedded in the outer surface of the ball valve body. The buffer cavity is located inside the flexible sealing bladder and is connected to the elastic sealing cavity through a connecting hole.

3. The top-mounted high-temperature resistant ball valve according to claim 2, characterized in that: The inner wall of the rotating tube is provided with a sliding groove, and a guide plate is slidably connected inside the sliding groove. One end of the guide plate extends into the inside of the ball valve hole, and the end of the guide plate away from the ball valve hole is connected to the elastic sealing layer.

4. A top-mounted high-temperature resistant ball valve according to claim 3, characterized in that: The guide vane is inclined relative to the axis of the ball valve orifice opening direction, and multiple sets of the guide vane are provided, which are symmetrically arranged with respect to the center of the ball valve orifice.

Images