Silicone rubber sealing ring and pipe connecting device
By designing the hollow cavity and adjusting through holes in the sealing ring, the problem of sealing failure at different altitudes and temperature conditions is solved, and the sealing effect under different environmental conditions is achieved and adapted to extreme environments.
Patent Information
- Application Number
- CN202421298075.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-07
AI Technical Summary
Existing train pipe sealing rings are prone to failure due to deformation at different altitudes and temperatures, and cannot adapt to extreme environments.
A silicone rubber sealing ring with a hollow cavity is designed, and an adjustment through hole is provided on the inner ring side wall of the sealing ring body, thereby providing a larger expansion and deformation range and effective support to adapt to different environmental conditions.
Through the design of hollow cavity and adjustment through holes, the sealing ring can maintain the sealing effect under different temperature and air pressure conditions, adapt to different operating environments, and ensure the stability and efficiency of pipeline sealing.
Smart Images
Figure CN222894637U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of train pipeline connection devices, and in particular to a silicone rubber sealing ring and a pipe connection device. Background Art
[0002] Existing train pipelines need to be connected through pipe joints. However, when the running environment of the train changes, especially when the train runs from a low altitude area to a high altitude area, or from a low temperature area to a warmer temperature area, the sealing ring inside the pipe connector often changes its deformation due to altitude factors or temperature environment. In high-altitude areas, or low-temperature areas in the north, the deformation of the rubber ring is reduced due to the influence of temperature, and the volume of the rubber ring itself will also be slightly reduced. Therefore, it is easy to form a small gap at the connection position of the pipe connector, affecting the sealing effect of the pipeline. However, if the size of the pipe connector rubber ring is designed for such an extreme environment, the sealing ring will cause excessive expansion in low altitudes or areas with higher temperatures in the south, causing an increase in the internal pressure of the pipe connector and affecting the connection stability of the pipe connector. Therefore, there is a need for a sealing ring that can adapt to different external environments. Utility Model Content
[0003] In order to solve the shortcomings of the prior art, the purpose of the present application is to provide a silicone rubber sealing ring. The present application provides a larger telescopic deformation range through the hollow cavity in the silicone rubber sealing ring, which can solve the problem of sealing failure of the sealing ring under different altitudes and different temperature conditions.
[0004] To achieve the above-mentioned purpose, the silicone rubber sealing ring provided in the present application includes: a sealing ring body, the interior of which is configured to have a hollow cavity; an adjustment through hole, which is arranged on the inner ring side wall of the sealing ring body and passes through the side wall surface to the hollow cavity.
[0005] Optionally, a silicone rubber sealing ring as described above, wherein the sealing ring body is a closed circular ring structure, and its cross-section is annular or rounded rectangular; the adjustment through holes are arranged at intervals on the inner circumference of the circular ring structure, or at intervals at the inner rounded corners of the rounded rectangle.
[0006] Optionally, in any of the above silicone rubber sealing rings, the hollow cavity is a closed circular ring that passes through the sealing ring body.
[0007] Optionally, in any of the above-mentioned silicone rubber sealing rings, partitions are further provided between the adjusting through holes in the hollow cavity, and the closed circular ring structure of the sealing ring body is divided into a plurality of independent cavities which are not connected to each other by the partitions.
[0008] Optionally, the silicone rubber sealing ring as described in any of the above, wherein the silicone rubber sealing ring is made of high-strength heat-vulcanized silicone rubber material.
[0009] A pipe connection device comprises a first pipe joint and a second pipe joint which cooperate with each other, wherein a silicone rubber sealing ring as described above is installed, and the silicone rubber sealing ring is installed in a limiting groove formed at the connection position between the first pipe joint and the second pipe joint.
[0010] Optionally, in any of the above pipe connection devices, the adjustment through hole of the silicone rubber sealing ring is arranged at a position close to the notch in the limiting groove.
[0011] Optionally, in any of the above-described pipe connection devices, a clamping ring is further provided on the outer ring of the connection position between the first pipe joint and the second pipe joint, one side of the clamping ring is overlapped and fixed with the second pipe joint, and the other side thereof is bolted to the outer wall of the first pipe joint.
[0012] Optionally, in any of the above pipe connection devices, an outwardly convex step is provided at the end of the second pipe connection, and one side of the clamping ring is contracted inwardly to overlap and fix with the outwardly convex step.
[0013] Optionally, in a pipe connection device as described above, the outer diameter of the first pipe joint is retracted at its pipe connection position; the bolt passes through the clamping ring and abuts inwardly from the other side of the clamping ring to the outer wall of the retracted position of the first pipe joint.
[0014] Compared with the existing solutions, this application has the following technical effects:
[0015] The silicone rubber sealing ring provided by the present application includes a sealing ring body with a hollow cavity inside, and an adjustment through hole is opened on the inner ring side wall of the sealing ring body from the side wall surface to the inside of the hollow cavity. The silicone rubber sealing ring is installed in the limit groove at the connection position between the male and female pipe joints of the pipe connection device, and can use the hollow cavity to provide a larger deformation amount, use the complete sealing ring side wall between the adjustment through holes to provide effective support, and use the internal space of the cavity to realize flexible adjustment of the medium inside the pipeline under different pressures. The present application can drain the medium inside the pipeline to the inside of the hollow cavity by adjusting the through hole when the temperature is high. When the pressure in the cavity reaches saturation, the deformation amount of the silicone rubber sealing ring can be limited, the increase of its deformation amount after heating can be reduced, and the sealing ring can be kept in an expanded state to ensure the sealing between the outer periphery of the sealing ring and the pipe connection. When the temperature is low, the liquid inside the cavity can restrict its outflow by adjusting the restriction of the through hole, and the inside of the hollow cavity can be kept in an appropriate deformation range by filling the liquid inside the cavity under the low-temperature contraction state. The present application can be adapted to different operating environments and maintain the pipe joint sealing effect under different temperatures and different air pressure conditions.
[0016] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:
[0018] Figure 1 It is a cross-sectional view of the pipe connection device according to the present application.
[0019] Figure 2 It is a schematic diagram of the structure of the silicone rubber sealing ring according to the present application.
[0020] In the figure, 1 represents the sealing ring body; 11 represents the hollow cavity; 12 represents the adjustment hole; 2 represents the first pipe joint; 3 represents the clamping ring; 4 represents the second pipe joint; 21 represents the limiting groove; 22 represents the thread; 23 represents the pipe connection position; and 5 represents the bolt. DETAILED DESCRIPTION
[0021] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.
[0022] The meaning of "inside" and "outside" in the present application refers to the direction from the outer wall of the clamp ring to the internal medium of the pipeline relative to the pipe connector itself, and the opposite direction is outside; it is not a specific limitation on the device mechanism of the present application.
[0023] The term “connection” as used in this application may mean a direct connection between components or an indirect connection between components via other components.
[0024] The silicone rubber sealing ring provided in the present application is arranged Figure 1 In the pipe connection device shown, the limiting groove 21 formed by the connection position between the first pipe joint 2 and the second pipe joint 4 that cooperate with each other is installed and positioned. The silicone rubber sealing ring includes Figure 2 Shown:
[0025] The sealing ring body 1 is provided with a hollow cavity 11 inside;
[0026] The adjusting through hole 12 is arranged on the inner ring side wall of the sealing ring body 1 and penetrates from the side wall surface to the hollow cavity 11 .
[0027] Therefore, the silicone rubber sealing ring can use the hollow cavity to provide a larger deformation, and by increasing the outer diameter of the sealing ring, an interference fit is formed in the limit groove to improve the sealing effect. At the same time, the sealing ring can also use the complete side walls between the adjustment holes to provide effective support to ensure its mechanical strength. When the external air pressure and temperature change, the internal space of the cavity can also be used to adapt to different pressure states by absorbing or restricting the medium in the pipeline, and the sealing effect can be maintained by flexibly adjusting the medium inside the pipeline.
[0028] This application can guide the internal medium of the pipeline to the inside of the hollow cavity by adjusting the through hole when the temperature is high. When the pressure in the cavity reaches saturation, the deformation of the silicone rubber sealing ring during stress deformation can be limited, and the increase in the deformation of the silicone rubber material after heating can be reduced by the support of the hydraulic pressure inside the cavity, so that the sealing ring can be kept in an appropriate expansion state to ensure the sealing between the outer periphery of the sealing ring and the pipe connector. When the temperature is low, the liquid inside the cavity can be restricted by adjusting the restriction of the through hole to restrict its outflow. The inside of the hollow cavity can be kept in an appropriate deformation range by filling the cavity with liquid in a low-temperature contraction state to adapt to different operating environments, and maintain the pipe joint sealing effect under different temperatures and different air pressures.
[0029] In the present application, the sealing ring body 1 can generally be set as a closed circular ring structure, and its cross section can be Figure 1 The ring or Figure 2 The rounded rectangle shown; the adjusting through hole 12 is generally arranged at intervals on the inner circumference of the circular ring structure, or at intervals on the inner rounded corner position of the rounded rectangle. The inner aperture of the adjusting through hole 12 is smaller, and the outer aperture is slightly larger. The sealing ring body 1 can be made of high-strength heat-vulcanized silicone rubber materials such as GF / GFE / GFD series of Mai Gao Precision High-tech Materials (Shenzhen) Co., Ltd. The inside of the adjusting through hole can also be squeezed by the mold during the injection molding process of the high-strength heat-vulcanized silicone rubber material to form a valve that shrinks toward the center of the through hole channel inside the cavity to limit the outflow of liquid. Since the sealing ring body 1 is in an interference abutment state, its adjusting through hole 12 is squeezed and shrunk by the limiting groove of the pipe joint. Therefore, when under pressure, the adjusting through hole 12 is further squeezed by the side wall of the sealing ring body 1 and maintained in a state close to closing. At this time, the pipeline medium that originally entered the cavity can provide certain support to the vulcanized silicone rubber pipe wall, maintain its internal and external pressure balance, so as to maintain the sealing ring in an appropriate deformation state to maintain the sealing of the pipe joint. When the external force of the sealing ring decreases, the extrusion of its side wall decreases. Therefore, the adjustment hole 12 is slightly opened, and the medium that enters the limit groove through the gap between the pipe joints in the pipeline can be drained into the sealing ring body 1 through the larger outer opening, so as to provide certain support for the sealing ring and assist in maintaining the stability of the medium pressure in the pipe.
[0030] In the present application, the inner diameter of the adjusting through hole is generally not more than 15 of the inner diameter of the sealing ring, and the opening area is not more than 10% of the circumference of the sealing ring to ensure the supporting strength of the sealing ring.
[0031] The hollow cavity in the sealing ring body 1 of the present application can be set as a closed circular ring that penetrates the sealing ring body 1, or the closed circular ring structure of the sealing ring body 1 can be divided into a number of independent cavities that are not connected to each other by adjusting the partitions between the through holes 12. The independent cavities can independently limit the inflow and outflow of the medium in the pipe, and the partitions can also be used to provide additional support strength to ensure the reliability of the silicone rubber sealing ring structure.
[0032] In the present application, the adjustment through hole 12 of the silicone rubber sealing ring is preferably generally arranged at a position close to the slot in the limiting slot. Such a position can facilitate the medium between the pipe joint connection positions to enter the sealing ring through the gap inside the limiting slot opening, and can also limit the outflow of the medium through the complete sealing ring structure inside the slot body.
[0033] refer to Figure 1 In the pipe connection device of the present application, a clamp ring 3 may be provided on the outer periphery of the connection position between the first pipe joint 2 and the second pipe joint 4. One side of the clamp ring 3 may be overlapped and fixed with the outer wall of one of the pipe joints through an inward structure, and the other side of the clamp ring 3 may be abutted with the outer side wall of the other pipe joint 2 through bolts, thereby limiting the displacement between the two pipe joints.
[0034] by Figure 1 For example, the second pipe joint 4 may be provided with an outer convex step on the outer periphery of its connecting end, and one side of the clamping ring 3 shrinks inwardly and abuts against the angle between the outer convex step and the pipe joint, thereby fixing the side pipe joint.
[0035] In coordination therewith, the outer diameter of the first pipe joint 2 can be set to be retracted at its pipe connection position 23, thereby forming another step. Thus, the bolt 5 can penetrate the collar 3, extend inward from the opening position of the collar 3 and abut against the outer wall of the retracted position of the first pipe joint 2. The axial distance between the two pipe joints can be kept tight by the retracted structure of the collar 3 and the clamping between the bolts. The circumferential rotation between the two pipe joints can be limited by the platform structure outside the pipe connector. For example, a limiting groove that matches the retracted side of the collar 3 can be set on a side perpendicular to the pipe wall in the outer convex step of the second pipe joint 4 to limit the relative rotation between the two; the contraction surface of the pipe connection position 23 of the first pipe joint 2 can be set as a plane structure in conjunction with the plane end of the bolt to limit the rotation of the collar 3.
[0036] A thread 22 may be further provided between the pipe joint and the clamp ring 3 to ensure the tightness of the connection.
[0037] Those skilled in the art can understand that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A silicone rubber sealing ring, characterized in that: include: A sealing ring body (1) is provided with a hollow cavity (11) inside; An adjusting through hole (12) is arranged on the inner ring side wall of the sealing ring body (1) and penetrates from the side wall surface to the hollow cavity (11).
2. The silicone rubber sealing ring according to claim 1, characterized in that: The sealing ring body (1) is a closed circular ring structure, and its cross section is a ring or a rounded rectangular shape; The adjusting through holes (12) are arranged at intervals on the inner circumference of the circular ring structure, or at intervals on the inner rounded corners of the rounded rectangle.
3. The silicone rubber sealing ring according to claim 2, characterized in that: The hollow cavity is a closed circular ring that passes through the sealing ring body (1).
4. The silicone rubber sealing ring according to claim 2, characterized in that: Partitions are also provided between the adjustment through holes (12) in the hollow cavity, and the closed annular structure of the sealing ring body (1) is divided into a plurality of independent cavities which are not connected to each other by the partitions.
5. The silicone rubber sealing ring according to claim 1, characterized in that: The silicone rubber sealing ring is made of high-strength heat-vulcanized silicone rubber.
6. A pipe connection device, comprising a first pipe joint (2) and a second pipe joint (4) that cooperate with each other, characterized in that: A silicone rubber sealing ring as claimed in any one of claims 1 to 5 is installed, and the silicone rubber sealing ring is installed in a limiting groove (21) formed at a connection position between the first pipe joint and the second pipe joint.
7. The pipe connection device according to claim 6, characterized in that: The adjusting through hole (12) of the silicone rubber sealing ring is arranged in the limiting groove at a position close to the notch.
8. The pipe connection device according to claim 6, characterized in that: A clamping ring (3) is also provided on the outer ring of the connection position between the first pipe joint (2) and the second pipe joint (4); one side of the clamping ring (3) is overlapped and fixed with the second pipe joint (4), and the other side of the clamping ring (3) is bolted to the outer side wall of the first pipe joint (2).
9. The pipe connection device according to claim 8, characterized in that: An outwardly convex step is provided at the end of the second pipe joint (4), and one side of the clamping ring (3) is contracted inwardly and overlapped and fixed with the outwardly convex step.
10. The pipe connection device according to claim 8, characterized in that: The outer diameter of the first pipe joint (2) is reduced at its pipe connection position; The bolt passes through the clamping ring (3) and abuts inwardly from the other side of the clamping ring (3) to the outer side wall of the retracted position of the first pipe joint (2).