Sealing structure of low-permeability connecting part
By using a frustum-shaped connector and a corrugated expansion joint in the vehicle refueling pipeline, combined with a sealing ring and an elastic clamping mechanism, the leakage problem caused by corrosion and wear of the sealing ring is solved, achieving high-efficiency sealing performance and a long-life sealing structure.
Patent Information
- Application Number
- CN202423304772.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The sealing structure of existing automotive refueling pipelines suffers from reduced sealing performance due to corrosion and wear of the sealing rings, leading to leakage problems.
A sealing structure for a low-permeability connection component is designed, employing a frustum-shaped joint and a corrugated expansion joint, connected by deformation, and a sealing ring is placed between the joint and the pipe interface structure, combined with an elastic positioning and clamping mechanism to improve sealing performance.
The dual sealing design of deformation connection and sealing ring significantly improves sealing performance, extends the service life of sealing structure, and has a simple structure that is easy to manufacture.
Smart Images
Figure CN223622452U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive pipeline sealing technology, specifically to a sealing structure for a low-permeability connection component. Background Technology
[0002] To prevent unnecessary leaks, automotive refueling pipelines are fitted with sealing structures at their ends. Existing automotive refueling pipelines often use sealing rings as the sealing structure. While this type of sealing structure is very convenient to install, with continuous use, the sealing rings are constantly corroded and worn, and the sealing performance will continue to decrease. Therefore, automotive refueling pipelines often leak after long-term use. Thus, designing a low-permeability connection component sealing structure is particularly important to extend the service life of the sealing structure. Summary of the Invention
[0003] To solve the above problems, this utility model designs a sealing structure for a low-permeability connection component. Both the first and second joints are truncated cone-shaped. Both ends of the corrugated expansion pipe are connected to the first and second joints by deformation. This design achieves sealing through deformation. In addition, sealing rings are provided between both ends of the corrugated expansion pipe and the sealing joints and pipe interface structures, which further improves the sealing performance.
[0004] To solve the above-mentioned technical problems, this utility model provides a sealing structure for a low-permeability connection component, characterized in that it includes a sealing joint, a corrugated expansion pipe, a joint structure, and a pipe interface structure. The joint structure and the pipe interface structure are detachably connected. The joint structure is provided with a connecting part that matches one end of the pipe interface structure. One end of the pipe interface structure is fitted onto the outside of the connecting part and connected to it by bolts. An elastic positioning and clamping mechanism is provided between the pipe interface structure and the connecting part. One end of the corrugated expansion pipe is fitted onto the other end of the pipe interface structure and fixedly connected to it by deformation. The other end of the corrugated expansion pipe is fitted onto the sealing joint and fixedly connected to it by deformation.
[0005] Further: The end of the sealing joint connected to the corrugated expansion pipe is set as a frustum-shaped first joint. The sealing joint is also provided with an annular limiting part. A first sealing ring installation groove is opened on the outer wall of the sealing joint between the first joint and the annular limiting part. A first sealing ring is fitted in the first sealing ring installation groove. The sealing joint and the corrugated expansion pipe are sealed by the first sealing ring.
[0006] Furthermore: the end of the pipe interface structure connected to the corrugated expansion pipe is set as a frustum-shaped second joint. The outer wall of the pipe interface structure is also provided with two stepped protrusions from front to back. The two stepped protrusions are the first stepped protrusion and the second stepped protrusion. A second sealing ring installation groove is opened on the outer wall of the pipe interface structure between the first stepped protrusion and the second joint. A second sealing ring is fitted in the second sealing ring installation groove. The pipe interface structure and the corrugated expansion pipe are sealed by the second sealing ring.
[0007] Furthermore: the elastic positioning and clamping mechanism includes a connecting hole on the outer wall of the connecting part, a hemispherical groove on the inner wall of the pipe interface structure, a spherical clamp and a spring. The spherical clamp is connected to the connecting hole by the spring, and the spherical clamp is clamped into the hemispherical groove under the action of the spring.
[0008] With the above structure, the first and second joints in this utility model are both truncated cones. Both ends of the corrugated expansion pipe are connected to the first and second joints by deformation. This design achieves sealing through deformation. In addition, sealing rings are provided between both ends of the corrugated expansion pipe and the sealing joints and pipe interface structures, which further improves the sealing performance. Furthermore, this utility model has the advantages of simple structure, easy manufacturing, and practical high efficiency. Attached Figure Description
[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] Figure 2 This is a structural diagram of a sealing joint.
[0012] Figure 3 This is a diagram showing the connection structure between the pipe interface structure and the joint structure. Detailed Implementation
[0013] like Figure 1 , Figure 2 and Figure 3The diagram illustrates a sealing structure for a low-permeability connection component, comprising a sealing joint 1, a corrugated expansion pipe 2, a joint structure 4, and a pipe interface structure 3. The joint structure is connected to the low-permeability connection component, and the joint structure is detachably connected to the pipe interface structure. The joint structure has a connecting part that matches one end of the pipe interface structure. One end of the pipe interface structure is fitted onto the outside of the connecting part and connected to it by bolts. An elastic positioning and clamping mechanism is provided between the pipe interface structure and the connecting part. One end of the corrugated expansion pipe is fitted onto the other end of the pipe interface structure and fixedly connected to it by deformation. The other end of the corrugated expansion pipe is fitted onto the sealing joint and fixedly connected to it by deformation.
[0014] like Figure 2 The sealing joint shown is connected to the corrugated expansion pipe at one end, which is set as a frustum-shaped first joint 1-1. The sealing joint is also provided with an annular limiting part 1-2. A first sealing ring installation groove is opened on the outer wall of the sealing joint between the first joint and the annular limiting part. A first sealing ring 5 is fitted in the first sealing ring installation groove. The sealing joint and the corrugated expansion pipe are sealed by the first sealing ring.
[0015] like Figure 3 The pipe interface structure shown is connected to the corrugated expansion pipe at one end, which is set as a frustum-shaped second connector 3-1. The outer wall of the pipe interface structure is also provided with two stepped protrusions from front to back. The two stepped protrusions are the first stepped protrusion 3-2 and the second stepped protrusion 3-3 respectively. A second sealing ring installation groove is opened on the outer wall of the pipe interface structure between the first stepped protrusion and the second connector. A second sealing ring 6 is fitted in the second sealing ring installation groove. The pipe interface structure and the corrugated expansion pipe are sealed by the second sealing ring.
[0016] The aforementioned elastic positioning and clamping mechanism includes a connecting hole on the outer wall of the connecting part, a hemispherical groove on the inner wall of the pipe interface structure, a spherical clamping head, and a spring. The spherical clamping head is connected to the connecting hole by the spring, and the spherical clamping head is clamped into the hemispherical groove under the action of the spring.
[0017] In this utility model, both the first and second joints are shaped like a frustum. Both ends of the corrugated expansion pipe are connected to the first and second joints by deformation. This design achieves sealing through deformation. Furthermore, sealing rings are provided between both ends of the corrugated expansion pipe and the sealing joints and pipe interface structures, which further improves the sealing performance. In addition, this utility model has the advantages of simple structure, easy manufacturing, and practical high efficiency.
[0018] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.
Claims
1. A sealing structure for a low-permeability connection component, characterized in that: The system includes a sealing joint (1), a corrugated expansion pipe (2), a joint structure (4), and a pipe interface structure (3). The joint structure and the pipe interface structure are detachably connected. The joint structure is provided with a connecting part that matches one end of the pipe interface structure. One end of the pipe interface structure is fitted onto the outside of the connecting part and connected to it by bolts. An elastic positioning and clamping mechanism is provided between the pipe interface structure and the connecting part. One end of the corrugated expansion pipe is fitted onto the other end of the pipe interface structure and is fixedly connected to it by deformation. The other end of the corrugated expansion pipe is fitted onto the sealing joint and is fixedly connected to it by deformation.
2. The sealing structure of a low-permeability connection component according to claim 1, characterized in that: The end of the sealing joint connected to the corrugated expansion pipe is set as a frustum-shaped first joint (1-1). The sealing joint is also provided with an annular limiting part (1-2). A first sealing ring installation groove is opened on the outer wall of the sealing joint between the first joint and the annular limiting part. A first sealing ring (5) is fitted in the first sealing ring installation groove. The sealing joint and the corrugated expansion pipe are sealed by the first sealing ring.
3. The sealing structure of a low-permeability connection component according to claim 1, characterized in that: The end of the pipe interface structure connected to the corrugated expansion pipe is set as a frustum-shaped second connector (3-1). The outer wall of the pipe interface structure is also provided with two stepped protrusions from front to back. The two stepped protrusions are the first stepped protrusion (3-2) and the second stepped protrusion (3-3) in sequence. A second sealing ring installation groove is opened on the outer wall of the pipe interface structure between the first stepped protrusion and the second connector. A second sealing ring (6) is fitted in the second sealing ring installation groove. The pipe interface structure and the corrugated expansion pipe are sealed by the second sealing ring.
4. The sealing structure of a low-permeability connection component according to claim 1, characterized in that: The elastic positioning and clamping mechanism includes a connecting hole on the outer wall of the connecting part, a hemispherical groove on the inner wall of the pipe interface structure, a spherical clamp and a spring. The spherical clamp is connected to the connecting hole by the spring, and the spherical clamp is clamped into the hemispherical groove under the action of the spring.