Novel high-pressure hydrogenation machine ball valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a novel ball valve of a high-pressure hydrogenation machine, which comprises a valve body, a valve cavity arranged in the valve body, runners arranged on two symmetrical sides of the valve cavity, a positioning block arranged on one of the other two sides, a positioning cavity arranged in the positioning block, a mounting cavity arranged on the other symmetrical side, a valve core arranged in the valve cavity and a valve rod arranged in the positioning cavity. One end of the valve rod is connected with the valve element, the other end of the valve rod is located outside the positioning cavity and connected with the handle, and a plug is arranged in the installation cavity. A first balance hole is formed in the side wall, adjacent to the plug, of the valve element, and a second balance hole is formed in the side wall, adjacent to the valve rod, of the valve element, so that the first balance hole and the second balance hole cannot abrade the valve seat when the valve element rotates, meanwhile, pressure on the two sides of the valve element is balanced, and friction between the valve element and the valve seat cannot be increased; the friction between the valve rod and the positioning block is not increased, the service life of the valve element, the valve seat, the positioning block and the valve rod is prolonged, the sealing performance of the ball valve is guaranteed, and the service life of the ball valve is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a new type of high-pressure hydrogenation machine ball valve. Background Art

[0002] As a switching control element for fluid pipeline transportation, the ball valve is widely used in the hydraulic system pipelines of various industries such as electric power, petrochemical, metallurgy, ocean, natural gas, and pharmaceuticals. The ball valve is driven by a valve stem to rotate the ball in the valve cavity to control the connection or disconnection of the flow channel.

[0003] When the ball valve is in use, since the valve stem is often rotated, the valve core is driven to rotate by the valve stem to open or close the ball valve. However, when the valve core rotates, it will affect the pressure inside the ball valve, resulting in excessive pressure in the valve cavity and damaging the ball valve.

[0004] Therefore, a pressure relief structure is added to the valve core of the currently used ball valve. Currently, the pressure relief mechanism mainly opens a pressure balance hole in the valve core, and the internal cavity of the valve core is connected to the flow channel of the ball valve through the pressure balance hole. However, setting it on the side will affect the smooth flatness of the side of the ball valve, cause wear to the valve seat, resulting in valve leakage and affecting the normal use of the ball valve. Therefore, the pressure balance hole is opened at the connection between the valve core and the valve stem. However, this setting method can only balance the pressure on one side of the valve core, which will affect the overall force balance of the valve core, resulting in increased friction between the valve core and the valve seat, and increased friction between the valve stem and the valve body, causing damage to the valve core, valve seat, and valve stem, and affecting the service life of the air valve.

[0005] In view of the above problems, the present utility model document proposes a new type of high-pressure hydrogenation machine ball valve. Summary of the Utility Model

[0006] The utility model provides a new type of high-pressure hydrogenation machine ball valve, which effectively solves the pressure influence during the opening and closing process of the ball valve, improves the service life of the ball valve, and improves the overall sealing performance of the ball valve.

[0007] The utility model provides the following technical solutions:

[0008] A new type of high-pressure hydrogenation machine ball valve includes a valve body. A valve cavity is opened in the valve body. Flow channels communicating with the valve cavity are opened on two symmetric sides of the valve cavity. On one of the other two sides, a positioning block is provided. A positioning cavity communicating with the valve cavity is opened in the positioning block. An installation cavity is opened on the symmetrically opposite side. A valve core is provided in the valve cavity. A valve stem is provided in the positioning cavity. One end of the valve stem is connected to the valve core, and the other end is located outside the positioning cavity, and a handle is connected to this end. A plug is provided in the installation cavity. A valve seat matching with the valve core is provided at the connection between the valve cavity and the flow channel; a first balance hole is provided on the side wall of the valve core adjacent to the plug, and a second balance hole is provided on the side wall adjacent to the valve stem.

[0009] Further, a third balance hole communicating with the second balance hole is provided at the end of the connection end of the valve stem and the valve core. One end of the third balance hole is located at the end of the valve stem, and the other end is located at the connection between the valve cavity and the positioning cavity.

[0010] Further, the diameter of the positioning cavity is smaller than that of the valve cavity. A thrust retaining platform is provided at the end of the valve stem. The thrust retaining platform is clamped at the connection between the valve cavity and the positioning cavity, and a thrust pad is provided at the connection. The thrust pad abuts against one side of the leg retaining platform.

[0011] Further, bearings are clamped at positions corresponding to both ends of the valve core in the valve cavity, and both ends of the valve core are respectively clamped in the bearings.

[0012] Further, a handle tightening nut is threadedly connected to the outer side wall of the positioning block.

[0013] Further, a retaining ring is provided at the end of the valve stem, and the handle is connected to the valve stem through the retaining ring.

[0014] Further, an end joint is threadedly connected in the flow channel. A bushing is provided in the end joint. A gland is connected to the end joint, and a locking nut is provided outside the end joint.

[0015] Further, sealing retaining rings and sealing rings are sleeved on the plug, the end joint and the valve stem.

[0016] Further, a limit retaining platform is provided on the inner wall of the positioning cavity. An annular block is provided in the middle of the valve stem. A support ring is filled between the block and the limit retaining platform.

[0017] In the present utility model, the first balance hole is arranged on the adjacent surface of the valve core and the plug, and the second balance hole is arranged on the adjacent surface of the valve core and the valve stem, so that the first balance hole and the second balance hole will not cause wear to the valve seat when the valve core rotates. At the same time, through the first balance hole and the second balance hole, the pressures on both sides of the valve core are balanced, the friction between the valve core and the valve seat is not increased, and the friction between the valve stem and the positioning block is not increased either. The service lives of the valve core, the valve seat, the positioning block and the valve stem are improved, the sealing performance of the ball valve is ensured, and the service life of the ball valve is also improved. Description of the Drawings

[0018] Figure 1 It is a schematic cross-sectional structure view of a novel high-pressure hydrogenation machine ball valve provided by an embodiment of the present utility model.

[0019] Reference Signs:

[0020] 1. Valve body; 2. Positioning block; 3. Valve core; 4. Valve stem; 5. Valve cavity; 6. Positioning cavity; 7. Plug; 8. Valve seat; 9. First balance hole; 10. Second balance hole; 11. Third balance hole; 12. Retaining ring; 13. Handle; 14. Handle tightening nut; 15. End joint; 16. Bushing; 17. Gland; 18. Locking nut; 19. Bearing; 20. Support ring; 21. Sealing retaining ring; 22. Sealing ring. Detailed implementation manner

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

[0022] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixing" means that they are connected to each other and the relative position relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only references to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention.

[0023] In the embodiments of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0024] In the embodiments of the present invention, "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0025] References to "one embodiment" or "some embodiments" or the like described in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present utility model. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized.

[0026] Embodiment:

[0027] Referring to Figure 1 As shown, a new type of high-pressure hydrogenation machine ball valve includes a valve body 1. A valve cavity 5 is formed inside the valve body 1. Flow channels communicating with the valve cavity 5 are formed on two symmetric sides of the valve cavity 5. On one of the other two sides, a positioning block 2 is provided. A positioning cavity 6 communicating with the valve cavity 5 is formed inside the positioning block 2. An installation cavity is formed on the symmetrically opposite side. A valve core 3 is arranged inside the valve cavity 5. A valve stem 4 is arranged inside the positioning cavity 6. One end of the valve stem 4 is connected to the valve core 3, and the other end is located outside the positioning cavity 6, and a handle 13 is connected to this end. A plug 7 is arranged inside the installation cavity. A valve seat 8 cooperating with the valve core 3 is arranged at the connection between the valve cavity 5 and the flow channel; a first balance hole 9 is provided on the side wall of the valve core 3 adjacent to the plug 7, and a second balance hole 10 is provided on the side wall adjacent to the valve stem 4.

[0028] The valve core 3 and the valve seat 8 cooperate to rotate inside the valve cavity 5. The valve core 3 is driven to rotate by the valve stem 4. The installation cavity facilitates the assembly of the ball valve. After the assembly is completed, the installation cavity is blocked by the plug 7 to ensure the internal sealing of the ball valve. By providing the first balance hole 9 on the side wall of the valve core 3 adjacent to the plug 7 and the second balance hole 10 on the side wall adjacent to the valve stem 4, the first balance hole 9 connects the inside of the valve core 3 with the gap between the valve core 3 and the plug 7, and the second balance hole 10 connects the inside of the valve core 3 with the gap between the valve core 3 and the valve stem 4, so that the pressure between the two side surfaces of the valve core 3 is balanced, ensuring the fitting precision between the valve core 3 and the valve seat 8, not increasing the friction between the valve core 3 and the valve seat 8, and the position of the valve core 3 is stable, so that the position of the valve stem 4 connected to the valve core 3 is stable, not increasing the friction between the valve stem 4 and the positioning block 2, thereby improving the service lives of the valve core 3, the valve seat 8, the valve stem 4, and the positioning block 2, and further improving the service life of the ball valve. In addition, the friction damage is reduced, and the internal sealing of the ball valve is ensured.

[0029] A third balance hole 11 communicating with the second balance hole 10 is provided at the end of the connection between the valve stem 4 and the valve core 3. One end of the third balance hole 11 is located at the end of the valve stem 4, and the other end is located at the connection between the valve cavity 5 and the positioning cavity 6.

[0030] The pressure on the end face of the valve stem 4 and the side surface of the valve stem 4 is balanced through the third balance hole 11, and the pressure between the side wall of the balance valve stem 4 and the valve stem 4 is balanced, improving the structural stability of the valve stem 4, reducing the friction between the side surface of the valve stem 4 and the inner wall of the positioning cavity 6, and increasing the service life of the valve stem 4.

[0031] The diameter of the positioning cavity 6 is smaller than that of the valve cavity 5. A thrust retaining platform is provided at the end of the valve stem 4, and the thrust retaining platform is clamped at the connection between the valve cavity 5 and the positioning cavity 6. A thrust pad is provided at the connection, and the thrust pad abuts against one side of the leg clamping platform.

[0032] The movement of the valve stem 4 is restricted by the thrust retaining platform, ensuring the stability of the connection between the valve stem 4 and the valve core 3. The friction between the valve stem 4 and the thrust retaining platform during rotation is reduced by the thrust pad, preventing the valve stem 4 from being damaged by friction and increasing the service life of the valve stem 4.

[0033] Bearings 19 are clamped at positions corresponding to both ends of the valve core 3 in the valve cavity 5, and both ends of the valve core 3 are respectively clamped in the bearings 19.

[0034] The bearing 19 facilitates the rotation of the valve core 3 in the valve cavity 5. At the same time, it improves the stability of the valve core 3 during rotation, ensures the fit between the valve core 3 and the valve seat 8, thereby ensuring the sealing performance of the ball valve, and also increases the service life of the ball valve.

[0035] A handle tightening nut 14 is threadedly connected to the outer side wall of the positioning block 2.

[0036] The sealing performance of the ball valve is ensured through the handle tightening nut 14. The valve seat 8 of the ball valve is usually made of an elastic material to ensure good sealing performance in the closed state of the ball valve. When the valve core 3 rotates to contact the valve seat 8, due to the elasticity of the valve seat 8, a seal can be formed to prevent fluid leakage. The handle tightening nut 14 is used to fix and adjust the position of the handle 13 to ensure that the valve core 3 can accurately rotate to its position, thereby achieving effective control and sealing of the fluid.

[0037] A retaining ring 12 is provided at the end of the valve stem 4, and the handle 13 is connected to the valve stem 4 through the retaining ring 12.

[0038] The connection between the handle 13 and the valve stem 4 is facilitated through the retaining ring 12. The retaining ring 12 is sleeved on the end of the valve stem 4, and the handle 13 passes through the retaining ring 12 from the side and is then locked and fixed to the end of the valve stem 4 through a bolt, enabling the handle 13 to be connected to the valve stem 4. By rotating the handle 13, the valve stem 4 is rotated, and then the valve core 3 is driven to rotate to control the opening or closing of the ball valve.

[0039] An end joint 15 is threadedly connected in the flow channel. A bushing 16 is provided in the end joint 15. A gland 17 is connected to the end joint 15, and a locking nut 18 is provided on the outside of the end joint 15.

[0040] The gland 17 is conveniently installed on the ball valve through the end joint 15. The ball valve is conveniently connected to the external conveying pipeline through the gland 17. The locking nut 18 improves the stability of the position of the end joint 15, preventing the end joint 15 from loosening and causing leakage.

[0041] Sealing retaining rings 21 and sealing rings 22 are sleeved on the plug 7, the end joint 15, and the valve stem 4.

[0042] The sealing performance inside the ball valve is improved through the sealing retaining ring 21 and the sealing ring 22, preventing the ball valve from leaking.

[0043] A limiting clamping platform is provided on the inner wall of the positioning cavity 6. An annular clamping block is provided in the middle of the valve stem 4. A support ring 20 is filled between the clamping block and the limiting clamping platform.

[0044] The friction between the valve stem 4 and the inner wall of the installation cavity is reduced through the support ring 20, improving the extrusion of the sealing ring 22 and the sealing retaining ring 21 when the valve stem 4 rotates, preventing the sealing ring 22 and the sealing retaining ring 21 from being damaged, and ensuring the sealing performance of the valve stem 4.

[0045] During use, the valve core 3 and the valve stem 4 are conveniently installed in the valve cavity 5 and the positioning cavity 6 through the installation cavity, and the installation cavity is blocked by the plug 7. The ball valve is connected to the fluid conveying pipeline through the glands 17 on both sides. The valve core 3 is driven to rotate by rotating the handle 13 to open or close the ball valve. When the valve core 3 rotates, it will affect the air pressure in the valve cavity 5. Through the first balance hole 9, the second balance hole 10, and the third balance hole 11, the air pressure in the valve cavity 5 is stabilized, which will not affect the position of the valve core 3, and thus will not affect the position of the valve stem 4. As a result, the cooperation between the valve core 3 and the valve seat 8 is stable, and the valve core 3 or the valve seat 8 will not be damaged by friction. At the same time, the cooperation between the valve stem 4 and the inner wall of the positioning cavity 6 is stable, and the valve stem 4 or the positioning block 2 will not be damaged by friction. Therefore, the sealing performance of the ball valve is not affected, no fluid leakage occurs, the service life of the ball valve is extended, the sealing effect of the ball valve is ensured, and the safety of using the ball valve is improved.

[0046] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention; without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A new type of high-pressure hydrogenation machine ball valve, characterized in that, It includes a valve body, a valve cavity is formed in the valve body, flow channels communicating with the valve cavity are formed on two symmetric sides of the valve cavity, a positioning block is provided on one of the other two sides, a positioning cavity communicating with the valve cavity is formed in the positioning block, an installation cavity is formed on the symmetric other side, a valve core is arranged in the valve cavity, a valve rod is arranged in the positioning cavity, one end of the valve rod is connected to the valve core, the other end is located outside the positioning cavity, and a handle is connected to this end, a plug is arranged in the installation cavity, and a valve seat cooperating with the valve core is arranged at the connection of the valve cavity and the flow channel; a first balance hole is provided on the side wall of the valve core adjacent to the plug, and a second balance hole is provided on the side wall adjacent to the valve rod.

2. A novel high-pressure hydrogenation machine ball valve according to claim 1, characterized in that, A third balance hole communicating with the second balance hole is provided at the end of the connection end of the valve rod and the valve core, one end of the third balance hole is located at the end of the valve rod, and the other end is located at the connection of the valve cavity and the positioning cavity.

3. A novel high-pressure hydrogenation machine ball valve according to claim 1, characterized in that, The diameter of the positioning cavity is smaller than that of the valve cavity, a thrust retaining platform is provided at the end of the valve rod, the thrust retaining platform is clamped at the connection of the valve cavity and the positioning cavity, and a thrust pad is arranged at the connection, and the thrust pad abuts against one side of the leg retaining platform.

4. A novel high-pressure hydrogenation machine ball valve according to claim 1, characterized in that, Bearings are clamped at positions corresponding to both ends of the valve core in the valve cavity, and both ends of the valve core are respectively clamped in the bearings.

5. A novel high-pressure hydrogenation machine ball valve according to claim 1, characterized in that, A handle tightening nut is threadedly connected to the outer side wall of the positioning block.

6. A novel high-pressure hydrogenation machine ball valve according to claim 1, characterized in that, A retaining ring is provided at the end of the valve rod, and the handle is connected to the valve rod through the retaining ring.

7. A novel high-pressure hydrogenation machine ball valve according to claim 1, characterized in that, An end joint is threadedly connected in the flow channel, a bushing is arranged in the end joint, a gland is connected to the end joint, and a locking nut is arranged outside the end joint.

8. A novel high-pressure hydrogenation machine ball valve according to claim 7, characterized in that, Sealing retaining rings and sealing rings are sleeved on the plug, the end joint and the valve rod.

9. A novel high-pressure hydrogenation machine ball valve according to claim 8, characterized in that, A limiting retaining platform is arranged on the inner wall of the positioning cavity, an annular clamping block is arranged in the middle of the valve rod, and a support ring is filled between the clamping block and the limiting retaining platform.

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