Top-mounted C-shaped wear-resistant ball valve of hydrogenation unit

Abstract

The utility model relates to a top-mounted C-shaped wear-resistant ball valve of a hydrogenation device, which comprises a main body, a flow channel is formed in a valve body of the main body, an adjustable compensation unit is mounted in the valve body, a valve cover is arranged at the upper part of the valve body, a top-mounted protection unit is mounted on the valve cover, and the top-mounted protection unit is connected with the flow channel. The adjustable compensation unit comprises a reset spring, a valve seat pressing sleeve and a valve seat sealing ring, a step groove is formed in the inner wall of the valve body, the valve seat pressing sleeve is installed in the low area of the step groove, a valve seat is installed in the high area of the step groove, and the valve seat is arranged in a step shape. The ball valve has the advantages that no contact box friction exists in the rotating process of the C-shaped ball body and the valve seat except before closing, during opening and closing, contact with the valve seat and other rotating stages, the long service life of the valve is guaranteed, sealing performance is achieved under the friction-free condition, the overall service life of the ball valve is prolonged, and the service life of the ball valve is prolonged. And the sealing performance between the ball body and the valve seat under severe conditions is improved.

Description

Technical Field

[0001] The utility model relates to a top-mounted C-type wear-resistant ball valve for a hydrogenation device, belonging to the field of ball valves. Background Art

[0002] The sealing performance between the ball and the valve seat inside the ball valve is affected due to frequent use. Especially in harsh conditions, the friction between the ball and the valve seat is more affected, resulting in a greater impact on the sealing performance between the ball and the valve seat. The existing traditional ball valve has the risk of residual accumulation of media in the ball cavity, resulting in accelerated wear and switch failure.

[0003] How to improve the sealing between the ball and the valve seat under harsh conditions and increase the overall service life of the ball valve. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides a top-mounted C-type wear-resistant ball valve for a hydrogenation device. The technical solution of the utility model is:

[0005] A top-mounted C-type wear-resistant ball valve for a hydrogenation device comprises a main body, a flow channel is formed inside the valve body of the main body, an adjustable compensation unit is installed in the valve body, a valve cover is arranged on the upper part of the valve body, a top-mounted protection unit is installed on the valve cover, the adjustable compensation unit comprises a reset spring, a valve seat pressing sleeve and a valve seat sealing ring, a stepped groove is formed on the inner wall of the valve body, the valve seat pressing sleeve is installed in the lower area of ​​the stepped groove, and a valve seat is installed in the upper area of ​​the stepped groove, the valve seat is arranged in a stepped shape, and the lower end of the valve seat is pressed against the On the valve seat pressing sleeve, a baffle is installed between the upper end of the valve seat and the valve body, and the valve seat is movably matched with the baffle; a return spring arranged in the horizontal direction is also installed between the valve seat pressing sleeve and the valve body, one end of the return spring is pressed against the valve body, and the other end is movably matched with the valve seat pressing sleeve, and the valve seat pressing sleeve is extended and retracted under the action of the return spring; it also includes a C-shaped ball that is rotatably matched with the valve seat, and the C-shaped ball is sealed with the valve seat when it is docked with the valve seat, and the flow channel is opened and closed through the cooperation of the C-shaped ball and the valve seat.

[0006] A valve body water inlet is formed at one end of the valve body, and a valve body water outlet corresponding to the valve body water inlet is formed at the other side. A flow channel is formed between the valve body water inlet and the valve body water outlet. A valve cover is provided on the upper part of the valve body. The valve seat is installed on the valve body water inlet side. The ball is rotatably installed inside the valve body and movably cooperates with a valve seat sealing ring installed on the valve seat.

[0007] The C-shaped ball is driven by a valve stem, the lower end of the valve stem is connected to the C-shaped ball, and the upper end of the valve stem passes through the valve cover and is connected to the pneumatic actuator. The valve stem is in sealing contact with the valve cover.

[0008] The top-mounted protection unit includes an upper support sleeve, a packing pressure plate, a packing sleeve, a braided packing layer and a graphite packing layer. The upper support sleeve is installed between the valve stem and the valve cover. The packing pressure plate, the packing sleeve, the braided packing layer and the graphite packing layer are installed between the upper support sleeve and the valve stem from top to bottom. The packing pressure plate is fixed on the upper support sleeve by bolts to squeeze the packing sleeve.

[0009] A graphite retaining ring is also installed between the valve seat compression sleeve and the valve body, and the graphite retaining ring is a double wedge structure.

[0010] A convex ridge is arranged on the outer side of one end of the valve seat, a baffle is fixedly installed inside the valve body, and a sliding groove for the reciprocating movement of the convex ridge is arranged on the baffle.

[0011] The valve stem center line of the valve stem forms a first eccentric area relative to the rotation center of the C-shaped sphere; the valve stem center line and the flow channel center line form a second eccentric area, and the center of the C-shaped sphere and the rotation center of the C-shaped sphere form a third eccentric area.

[0012] The advantages of the utility model are that during the rotation process, the C-shaped ball and the valve seat have no contact and friction except for contact with the valve seat before closing and when opening and closing, thereby ensuring the long service life of the valve and achieving sealing without friction, which not only improves the overall service life of the ball valve, but also improves the sealing between the ball and the valve seat under harsh conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of the structure of the medium-adjustable compensation unit. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with specific embodiments, and the advantages and features of the present invention will become clearer as the description proceeds. However, these embodiments are merely exemplary and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solution of the present invention may be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements fall within the scope of protection of the present invention.

[0016] See also Figure 1 to Figure 2The utility model relates to a top-mounted C-type wear-resistant ball valve for a hydrogenation device, comprising a main body, a flow channel is formed inside the valve body 1 of the main body, an adjustable compensation unit is installed in the valve body 1, a valve cover 2 is arranged on the upper part of the valve body 1, a top-mounted protection unit is installed on the valve cover, the adjustable compensation unit comprises a reset spring 23, a valve seat pressing sleeve 24 and a valve seat sealing ring 22, a stepped groove is formed on the inner wall of the valve body 1, the valve seat pressing sleeve 24 is installed in the lower area of ​​the stepped groove, and a valve seat 4 is installed in the upper area of ​​the stepped groove, the valve seat 4 is arranged in a stepped shape, and the lower end of the valve seat 4 is pressed against the valve seat On the pressing sleeve 24, a baffle 7 is installed between the upper end of the valve seat 4 and the valve body 1, and the valve seat 4 is movably matched with the baffle 7; a return spring 23 arranged in the horizontal direction is also installed between the valve seat pressing sleeve 24 and the valve body 1, one end of the return spring 23 is pressed against the valve body 1, and the other end is movably matched with the valve seat pressing sleeve 24, and the valve seat pressing sleeve 24 is extended and retracted under the action of the return spring 23; it also includes a C-type ball 3 that is rotatably matched with the valve seat 4, and when the C-type ball 3 is docked with the valve seat 4, it is sealed and matched with the valve seat 4, and the flow channel is opened and closed by the cooperation between the C-type ball 2 and the valve seat 4.

[0017] A valve body water inlet is formed at one end of the valve body 1, and a valve body water outlet corresponding to the valve body water inlet is formed at the other side. A flow channel is formed between the valve body water inlet and the valve body water outlet. A valve cover 2 is arranged on the upper part of the valve body 1. The valve body and valve cover are integrated into a structure to avoid external leakage, and the top-mounted structure is convenient for disassembly and maintenance. The valve seat 4 is installed on the valve body water inlet side, and the C-shaped ball 3 is rotatably installed inside the valve body and movably cooperates with the valve seat sealing ring installed on the valve seat.

[0018] The C-shaped ball 3 is driven by a valve stem. The lower end of the valve stem 6 is connected to the C-shaped ball 2, and the upper end passes through the valve cover 2 and is connected to the pneumatic actuator. The valve stem is in sealing contact with the valve cover.

[0019] The top-mounted protection unit includes an upper support sleeve 5, a packing pressure plate 40, a packing sleeve 39, a braided packing layer 38 and a graphite packing layer 37. The upper support sleeve 5 is installed between the valve stem 6 and the valve cover 2. The packing pressure plate 40, the packing sleeve 39, the braided packing layer 38 and the graphite packing layer 37 are installed between the upper support sleeve 5 and the valve stem 6 from top to bottom. The packing pressure plate 40 is fixed on the upper support sleeve 5 by bolts to squeeze the packing sleeve 39; a pneumatic actuator bracket 9 is installed on the valve cover 2.

[0020] A graphite retaining ring 11 is also installed between the valve seat compression sleeve 24 and the valve body 1. The graphite retaining ring 4 is a double wedge structure and has the functions of buffer compensation and sealing between the valve seat and the valve seat compression sleeve.

[0021] A convex ridge is arranged on the outer side of one end of the valve seat 4, and a baffle plate 5 is fixedly installed inside the valve body 1. A sliding groove for the reciprocating movement of the convex ridge is arranged on the baffle plate 7.

[0022] The valve stem center line of the valve stem forms a first eccentric area relative to the rotation center of the C-shaped sphere; the valve stem center line and the flow channel center line form a second eccentric area, and the center of the C-shaped sphere and the rotation center of the C-shaped sphere form a third eccentric area.

[0023] The working principle of the utility model is:

[0024] The three-eccentric structure makes the valve motion trajectory similar to the cam mechanism trajectory, achieving frictionless travel; when the C-type ball 2 is about to close, the C-type ball gradually approaches the valve seat 4. As the flow channel becomes smaller and the flow rate increases, the medium fluid flushes and cleans the valve seat sealing surface; in the final closing stroke, the C-type ball 2 contacts the valve seat and scrapes the valve seat sealing surface like a scraper, further removing particles and debris attached to the valve seat sealing surface to ensure reliable sealing performance.

[0025] The utility model is a high-performance ball valve designed with no friction in opening and closing, metal hard sealing (matching of C-type ball and valve seat), single valve seat and triple eccentric structure.

[0026] Product application conditions: high temperature, high pressure, deep cold and severe working conditions with complex process media

[0027] The sealing surface where the valve seat and the C-type ball meet is spray-welded with a NI60 layer, which is suitable for the following working conditions: high temperature working condition: up to 820℃; low temperature working condition: as low as -254℃.

[0028] Complex process media: such as media that are easy to crystallize, scale, corrode, or multiphase mixed media. The valve seat 4 can be compensated by the elastic force of the return spring. In the case of wear of the valve seat or the spherical surface of the C-type sphere, the valve seat and the spherical surface can be fully sealed through the elastic thrust, thereby increasing the overall service life of the ball valve.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A top-mounted C-type wear-resistant ball valve for a hydrogenation device, comprising a main body, a flow channel is formed inside the valve body of the main body, characterized in that: An adjustable compensation unit is installed in the valve body, a valve cover is arranged on the upper part of the valve body, and a top-mounted protection unit is installed on the valve cover. The adjustable compensation unit includes a reset spring, a valve seat pressing sleeve and a valve seat sealing ring. A stepped groove is formed on the inner wall of the valve body, the valve seat pressing sleeve is installed in the lower area of ​​the stepped groove, and the valve seat is installed in the upper area of ​​the stepped groove. The valve seat is arranged in a stepped shape, and the lower end of the valve seat is pressed on the valve seat pressing sleeve. A baffle is installed between the upper end of the valve seat and the valve body, and the valve seat is movably matched with the baffle; a reset spring arranged in the horizontal direction is also installed between the valve seat pressing sleeve and the valve body, one end of the reset spring is pressed on the valve body, and the other end is movably matched with the valve seat pressing sleeve, and the valve seat pressing sleeve is extended and retracted under the action of the reset spring; it also includes a C-type ball that is rotatably matched with the valve seat, and the C-type ball is sealed and matched with the valve seat when it is docked with the valve seat, and the flow channel is opened and closed by the cooperation between the C-type ball and the valve seat.

2. The top-mounted C-type wear-resistant ball valve for hydrogenation equipment according to claim 1, characterized in that: A valve body water inlet is formed at one end of the valve body, and a valve body water outlet corresponding to the valve body water inlet is formed at the other side. A flow channel is formed between the valve body water inlet and the valve body water outlet. A valve cover is provided on the upper part of the valve body. The valve seat is installed on the valve body water inlet side. The ball is rotatably installed inside the valve body and movably cooperates with a valve seat sealing ring installed on the valve seat.

3. The top-mounted C-type wear-resistant ball valve for hydrogenation equipment according to claim 1, characterized in that: The C-shaped ball is driven by a valve stem, the lower end of the valve stem is connected to the C-shaped ball, and the upper end of the valve stem passes through the valve cover and is connected to the pneumatic actuator. The valve stem is in sealing contact with the valve cover.

4. The top-mounted C-type wear-resistant ball valve for hydrogenation equipment according to claim 3 is characterized in that: The top-mounted protection unit includes an upper support sleeve, a packing pressure plate, a packing sleeve, a braided packing layer and a graphite packing layer. The upper support sleeve is installed between the valve stem and the valve cover. The packing pressure plate, the packing sleeve, the braided packing layer and the graphite packing layer are installed between the upper support sleeve and the valve stem from top to bottom. The packing pressure plate is fixed on the upper support sleeve by bolts to squeeze the packing sleeve.

5. The top-mounted C-type wear-resistant ball valve for hydrogenation equipment according to claim 1, characterized in that: A graphite retaining ring is also installed between the valve seat compression sleeve and the valve body, and the graphite retaining ring is a double wedge structure.

6. The top mounted C-type wear-resistant ball valve for hydrogenation equipment according to claim 1 or 2, characterized in that: A convex ridge is arranged on the outer side of one end of the valve seat, a baffle is fixedly installed inside the valve body, and a sliding groove for the reciprocating movement of the convex ridge is arranged on the baffle.

7. The top mounted C-type wear-resistant ball valve for hydrogenation equipment according to claim 3, characterized in that: The valve stem center line of the valve stem forms a first eccentric area relative to the rotation center of the C-shaped sphere; the valve stem center line and the flow channel center line form a second eccentric area, and the center of the C-shaped sphere and the rotation center of the C-shaped sphere form a third eccentric area.

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