Wear-resistant tap sealing ring

Abstract

The utility model relates to sealing ring technical field discloses a kind of wear-resistant type plug sealing ring, including sealing ring body, the sealing ring body includes ring body upper part, ring body lower part and ring body middle part, annular groove is established in the inside of ring body middle part, the end face of the sealing ring body exists camber, and the camber of the sealing ring body is consistent with the end face camber of plug valve internal slip, the sealing ring body is axisymmetric structure, and the sealing ring body with its diameter direction is symmetry axis, the both ends of the sealing ring body are curved and produce camber towards the same side. In the utility model, through the composite design of outer wear-resistant material, intermediate elastic layer and inner layer metal framework, the wear resistance and strength are enhanced;Surface coating graphite self-lubricating layer, reduce friction torque;Middle part inserts metal spring and provides self-adapting compression force;Sealing ring camber fits slip, without deformation, improve the sealing performance and life under high pressure working condition.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, and in particular to a wear-resistant plug sealing ring. Background Technology

[0002] A plug seal is a critical sealing component used in plug valves. It is typically made of wear-resistant and corrosion-resistant materials, offering excellent sealing performance and durability. Suitable for frequent on / off operations or applications involving particulate matter, high pressure, or corrosive media, it is widely used in industries such as petrochemicals, natural gas transportation, water treatment, metallurgy, mining, pharmaceuticals, and food processing, ensuring reliable sealing and long service life under high temperature, high pressure, or harsh environments.

[0003] In existing plug valves, the sealing ring is typically designed as a flat surface. However, during installation, the sealing ring needs to bend freely with the curvature of the valve core, resulting in deformation. This deformation leads to uneven density distribution in different parts of the sealing ring, and the density difference further causes uneven stress under high-pressure sealing conditions. This uneven stress makes the sealing ring highly susceptible to sealing failure, severely affecting the sealing performance and reliability of the plug valve.

[0004] Existing plug valve seals are not adaptable to complex operating conditions: the seal needs to bend with the curvature of the internal slips of the plug valve, thus deforming. However, the density of the deformed seal becomes unevenly distributed, further causing uneven stress under high-pressure sealing conditions. The high coefficient of friction of the sealing surface leads to increased wear of the seal due to the large torque during operation. After pressure fluctuations or long-term use, the seal cannot maintain its sealing performance through self-adjustment, which easily leads to leakage problems.

[0005] To address the above problems, a wear-resistant plug seal ring is proposed. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a wear-resistant plug seal ring, which aims to solve the problem that the existing seal ring is prone to failure under high pressure conditions due to uneven density and uneven stress caused by deformation.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a wear-resistant plug sealing ring, comprising a sealing ring body, wherein the sealing ring body includes an upper part, a lower part and a middle part, and an annular groove is provided on the inner side of the middle part of the ring body.

[0008] As a further description of the above technical solution: The end face of the sealing ring has a curvature, and the curvature of the sealing ring is consistent with the end face curvature of the internal slip of the plug valve.

[0009] As a further description of the above technical solution: The sealing ring body has an axisymmetric structure, and the sealing ring body has its diameter direction as the axis of symmetry.

[0010] As a further description of the above technical solution: The two ends of the sealing ring are bent toward the same side and produce an arc.

[0011] As a further description of the above technical solution: The top of the upper part of the ring is provided with a self-lubricating coating, which is made of graphite.

[0012] As a further description of the above technical solution: The lower part of the ring body is equipped with a skeleton, which is made of shape memory metal.

[0013] As a further description of the above technical solution: The inner ring of the ring body has multiple fixing grooves, and springs are installed inside each of the fixing grooves.

[0014] As a further description of the above technical solution: The sealing ring body is a rubber structural component.

[0015] This utility model has the following beneficial effects: 1. In this utility model, the composite design of an outer wear-resistant material, a middle elastic layer, and an inner metal skeleton balances wear resistance, flexibility, and overall strength. This structure improves the performance stability of the sealing ring in high-pressure, high-temperature, and abrasive media.

[0016] 2. In this utility model, a self-lubricating material (graphite) is coated on the surface of the sealing ring to reduce the frictional torque during the operation of the valve, reduce mechanical wear, and improve operating efficiency.

[0017] 3. In this utility model, by embedding a metal spring in the middle of the sealing ring, an adaptive clamping force is provided, which can automatically compensate for fluctuations in medium pressure or wear of the sealing ring, ensuring long-term stable sealing performance and extending service life.

[0018] 4. In this utility model, when the arc-shaped sealing ring is installed on the sealing tile of the plug valve, the sealing ring can be directly attached without deformation or elastic deformation, so that the sealing ring has a consistent density and uniform force, and its performance is more stable under high pressure sealing operation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a wear-resistant plug seal ring proposed in this utility model; Figure 2This is a schematic diagram of the structure of the middle part of the wear-resistant plug seal ring proposed in this utility model; Figure 3 This is a schematic diagram of the structure of a spring for a wear-resistant plug seal ring proposed in this utility model; Figure 4 This is a schematic diagram of the skeleton of a wear-resistant plug seal ring proposed in this utility model.

[0020] Legend: 1. Sealing ring body; 101. Upper part of the ring body; 102. Lower part of the ring body; 103. Middle part of the ring body; 2. Spring; 3. Self-lubricating coating; 4. Skeleton. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figure 1 - Figure 4This utility model provides an embodiment of a wear-resistant plug valve sealing ring, comprising a sealing ring body 1. The sealing ring body 1 is a rubber structural component, designed to optimize durability and sealing effect. The end face of the sealing ring body 1 has a specific curvature, which precisely matches the end face curvature of the internal slip of the plug valve, allowing for a complete fit during installation without deformation, thus ensuring consistent sealing ring density and uniform stress. The sealing ring body 1 has an axisymmetric structure, symmetrically distributed along the diameter direction, ensuring uniform and stable mechanical properties. Simultaneously, both ends of the sealing ring body 1 are bent towards the same side to form a specific curvature, further improving fit and sealing performance. The sealing ring body 1 includes an upper part 101, a lower part 102, and a middle part 103. The inner side of the middle part 103 has an annular groove structure, which reduces installation difficulty without altering the sealing effect of the sealing ring body 1, thereby enhancing the dynamic adaptability of the sealing ring body 1. The top of the upper part 101 of the ring body is provided with a self-lubricating coating 3 made of graphite. This coating can effectively reduce the operating friction torque, reduce the mechanical wear of the sealing ring, and significantly improve the operating efficiency and service life. The lower part 102 of the ring body is equipped with a skeleton 4. The skeleton 4 is made of shape memory metal, which has excellent shape memory function and high strength characteristics. It can maintain the stability and elasticity of the overall structure under high pressure or high temperature environment. In addition, the middle part 103 of the ring body is provided with multiple fixing grooves in a ring. Metal springs 2 are evenly embedded in the fixing grooves. These springs 2 can provide adaptive clamping force, effectively compensate for the risk of sealing failure caused by long-term use or wear of the sealing ring, thereby ensuring that the sealing performance remains stable under the conditions of medium pressure fluctuation or harsh working conditions, and extending the service life of the sealing ring.

[0023] Working Principle: The sealing ring body 1 perfectly matches the end face curvature of the internal slip of the plug valve through its designed arc, requiring no deformation during installation. This ensures consistent sealing ring density and uniform stress distribution, thus avoiding failure caused by uneven stress under high-pressure sealing conditions. The self-lubricating coating 3 on the upper part 101 of the ring body is made of graphite, which significantly reduces frictional torque during plug valve operation, reduces mechanical wear, improves operating efficiency, and extends the service life of the sealing ring. The shape memory metal skeleton 4 inside the lower part 102 of the ring body provides high-strength support, maintaining the stability of the overall structure of the sealing ring under complex conditions such as high pressure and high temperature, and preventing deformation or damage. Multiple springs 2 embedded in the annular fixing groove inside the middle part 103 of the ring body provide adaptive clamping force through elastic elements. When the medium pressure fluctuates or gaps appear in the sealing ring due to wear, the sealing pressure is automatically adjusted to ensure long-term sealing stability. Through these optimized designs, this sealing ring exhibits excellent sealing performance, durability, and adaptability in high-pressure, high-temperature, particulate, or corrosive media, effectively extending the service life of equipment and simplifying installation operations.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wear-resistant plug seal ring, comprising a seal ring body (1), characterized in that: The sealing ring (1) includes an upper part (101), a lower part (102) and a middle part (103), and an annular groove is provided on the inner side of the middle part (103).

2. The wear-resistant plug seal ring according to claim 1, characterized in that: The end face of the sealing ring body (1) has an arc, and the arc of the sealing ring body (1) is consistent with the arc of the end face of the internal slip of the plug valve.

3. The wear-resistant plug seal ring according to claim 1, characterized in that: The sealing ring body (1) has an axisymmetric structure, and the sealing ring body (1) has its diameter direction as the axis of symmetry.

4. The wear-resistant plug seal ring according to claim 2, characterized in that: The two ends of the sealing ring (1) are bent toward the same side and produce an arc.

5. The wear-resistant plug seal ring according to claim 1, characterized in that: The top of the upper part (101) of the ring body is provided with a self-lubricating coating (3), which is made of graphite.

6. The wear-resistant plug seal ring according to claim 1, characterized in that: The lower part (102) of the ring body is equipped with a skeleton (4), which is made of shape memory metal.

7. The wear-resistant plug seal ring according to claim 1, characterized in that: The inner part of the middle part (103) of the ring body is provided with multiple fixing grooves, and springs (2) are installed inside each of the multiple fixing grooves.

8. The wear-resistant plug seal ring according to claim 1, characterized in that: The sealing ring body (1) is a rubber structural component.

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