Adjustable metal pipeline expansion joint
Through the corrugated components and limiting components of the adjustable metal pipe expansion joint, the problem of lack of displacement compensation in traditional devices is solved, the stability of the pipeline and the efficiency of medium transmission is improved, and the maintenance frequency and cost are reduced.
Patent Information
- Application Number
- CN202422736631.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Traditional pipeline connection devices lack effective displacement compensation mechanism, resulting in concentrated pipeline stress, easy damage, frequent maintenance and replacement, affecting normal operation and production efficiency.
The adjustable metal pipe expansion joint is adopted, including corrugated components, limiting components and flow guide components. The elastic deformation of the corrugated components absorbs displacement, the limiting components regulate the deformation range, the flow guide components optimize the flow of the medium, and the seal prevents leakage.
Effectively absorb pipe displacement, reduce stress concentration, extend expansion joint life, optimize medium transmission efficiency, ensure pipeline sealing and stability, and reduce maintenance costs.
Smart Images
Figure CN223294490U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of expansion joints, in particular to an adjustable metal pipe expansion joint. Background Art
[0002] Metal pipes are often affected by factors such as large temperature changes and pressure fluctuations, which inevitably lead to axial, lateral or angular displacements. Traditional pipe connection devices often lack effective displacement compensation mechanisms and are difficult to adapt to these changes, resulting in excessive stress concentration inside the pipes. This not only causes direct damage such as deformation and rupture of the pipes, but also frequent maintenance and replacement work seriously affects the normal operation of the pipeline system, increases the company's operating costs and time costs, reduces production efficiency, reduces the efficiency of medium transmission, and affects the normal operation of the industrial production or energy transmission links served by the entire pipeline system. Utility Model Content
[0003] The purpose of the utility model is to solve the problem that pipelines are affected by factors such as temperature and pressure and produce displacement. Traditional pipeline connection devices lack an effective displacement compensation mechanism, resulting in pipeline stress concentration and easy damage. Frequent maintenance and replacement affect normal operation. The utility model provides an adjustable metal pipeline expansion joint.
[0004] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:
[0005] The cam is secured to the cam face with an angular channel that extends outwardly past the cam face of the hubcap, and the channel is secured to a cam face with an indent that extends outwardly past the cam face of the hubcap, the channel being secured to the cam face with an indent that extends outwardly past the cam face of the hub.
[0006] Furthermore, the corrugated assembly includes a concave pipe area and a convex pipe area, the upper and lower ends of the concave pipe area are respectively fixedly connected to the inner ends of the two groups of connecting pipes, and the guide assembly is connected through the inner side walls of the concave pipe area and the convex pipe area. When the pipeline system produces axial, lateral or angular displacement due to factors such as temperature changes and pressure fluctuations, the concave pipe area and the convex pipe area of the corrugated assembly undergo corresponding elastic deformation.
[0007] Furthermore, the side walls of the convex tube area and the concave tube area are arranged at intervals, and the intervals between the side walls of the concave tube area and the convex tube area enable the corrugated component to flexibly expand or bend, thereby effectively absorbing the displacement of the pipeline system.
[0008] Furthermore, the seal passes through and fits on the inner wall of the sleeve, and effectively prevents leakage of the medium in the pipeline through the close fit between the ring body and the inner ring of the limiting assembly and the special shape design of the arc surface.
[0009] Furthermore, the flow guide component includes a cylinder and a drainage groove. The cylinder passes through the inner side of the connecting pipe and the corrugated component, and plays a role in guiding the flow direction of the medium during the flow of the medium in the pipeline.
[0010] Furthermore, the drainage groove is provided at the inner side wall of the cylinder, and the drainage groove further optimizes the flow state of the medium in the cylinder, so that the medium can pass through the expansion joint steadily and smoothly.
[0011] Furthermore, the seal includes a ring body and a curved surface, the curved surface is arranged on the upper half of the inner ring of the ring body, the outer side of the ring body is fitted to the inner ring of the limiting assembly, and the curved surface is located at the inner ring of the ring body. Through the close fit between the ring body and the inner ring of the limiting assembly and the special shape design of the curved surface, the leakage of the medium in the pipeline is effectively prevented, and the sealing of the pipeline system is ensured.
[0012] Compared with the prior art, the present invention provides an adjustable metal pipe expansion joint with the following beneficial effects:
[0013] This adjustable metal pipe expansion joint can accurately control the deformation amplitude of the corrugated component through the coordinated action of the sleeve, nut, limit rod, threaded area and limit ring, effectively preventing it from being damaged due to excessive deformation, greatly extending the service life of the expansion joint and ensuring the safety of the pipeline; the guide component runs through the inner side of the corrugated component and the connecting pipe, which can not only guide the medium to flow smoothly and orderly, reduce the impact and wear on the internal structure, but also optimize the medium transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall structural connection of this utility;
[0015] Figure 2 This is a top cross-sectional view showing the positional relationship between the outer side of the corrugated component and the insulation layer of the present invention;
[0016] Figure 3 Schematic diagram of the internal structure of the practical limit assembly;
[0017] Figure 4 Schematic diagram of the structural connection relationship between the corrugated component and the guide component of this utility model;
[0018] Figure 5 Schematic diagram of the structure of this practical seal.
[0019] In the figure: 1. Corrugated assembly; 11. Concave pipe area; 12. Convex pipe area; 2. Connecting pipe; 3. Limiting assembly; 31. Sleeve; 32. Nut; 33. Limiting rod; 34. Threaded area; 35. Limiting ring; 4. Guide assembly; 41. Cylinder; 42. Drainage groove; 5. Insulation layer; 6. Seal; 61. Ring; 62. Arc surface. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1:
[0021] like Figure 1-Figure 5 As shown, an adjustable metal pipe expansion joint includes a bellows component 1, the upper and lower ends of the bellows component 1 are fixedly connected to a connecting pipe 2, the outer ends of the connecting pipes 2 at both ends away from the bellows component 1 are fixedly connected to a limiting component 3, the inner sides of the bellows component 1 and the connecting pipe 2 are penetrated by a flow guide component 4, the outer wall surface of the bellows component 1 is attached with an insulation layer 5, and the inner ring of the limiting component 3 is provided with a seal 6.
[0022] like Figure 1 、 Figure 2 and Figure 4 As shown, the corrugated assembly 1 includes a concave tube area 11 and a convex tube area 12. The upper and lower ends of the concave tube area 11 are respectively fixedly connected to the inner ends of the two groups of connecting pipes 2. The flow guide assembly 4 is connected to the inner side walls of the concave tube area 11 and the convex tube area 12. The convex tube area 12 and the side walls of the concave tube area 11 are arranged at intervals. When the pipeline system produces axial, lateral or angular displacement due to factors such as temperature changes and pressure fluctuations, the concave tube area 11 and the convex tube area 12 of the corrugated assembly 1 undergo corresponding elastic deformation. The interval arrangement between the side walls of the concave tube area 11 and the convex tube area 12 enables the corrugated assembly 1 to flexibly expand or bend, thereby effectively absorbing the displacement of the pipeline system.
[0023] like Figure 1 and Figure 3As shown, the limiting assembly 3 includes a sleeve 31, a nut 32, a limiting rod 33, a threaded area 34 and a limiting ring 35. The sleeve 31 is provided with two groups, the bottom side of the nut 32 is fixedly connected to the top of the limiting rod 33, the limiting rod 33 passes through the side wall of the sleeve 31, the top of the threaded area 34 is fixedly connected to the bottom end of the limiting rod 33, the outer side wall of the threaded area 34 passes through the side wall of the sleeve 31 at the lower end, the inner ring of the limiting ring 35 is sleeved on the outer side wall of the threaded area 34, the seal 6 passes through and fits the inner side wall of the sleeve 31, when the corrugated assembly 1 is deformed due to pipeline displacement, the limiting rod 33 can limit its excessive deformation to a certain extent, and the cooperation between the nut 32 and the threaded area 34 can adjust the tightness of the limiting rod 33, thereby setting the deformation range of the corrugated assembly 1. Example 2:
[0024] like Figure 1 、 Figure 2 and Figure 4 As shown, the flow guide assembly 4 includes a cylinder 41 and a drainage groove 42. The cylinder 41 passes through the inner side of the pipe 2 and the corrugated assembly 1. The drainage groove 42 is provided at the inner side wall of the cylinder 41. The cylinder 41 of the flow guide assembly 4 passes through the inner side of the pipe 2 and the corrugated assembly 1. During the flow of the medium in the pipeline, it plays a role in guiding the flow direction of the medium. The drainage groove 42 further optimizes the flow state of the medium in the cylinder, so that the medium can pass through the expansion joint smoothly and steadily.
[0025] like Figure 1 、 Figure 3 and Figure 5 As shown, the seal 6 includes a ring body 61 and a curved surface 62. The curved surface 62 is arranged on the upper half of the inner ring of the ring body 61. The outer side of the ring body 61 is fitted with the inner ring of the limiting component 3. The curved surface 62 is located at the inner ring of the ring body 61. The ring body 61 of the seal 6 is fitted with the inner ring of the limiting component 3, and its curved surface 62 is in contact with the medium in the pipeline. Through the close fit between the ring body 61 and the inner ring of the limiting component 3 and the special shape design of the curved surface 62, the leakage of the medium in the pipeline is effectively prevented, and the sealing of the pipeline system is ensured.
[0026] Working principle: Figure 1-Figure 5 As shown, when the pipeline system undergoes axial, lateral or angular displacement due to factors such as temperature changes and pressure fluctuations, the concave pipe area 11 and the convex pipe area 12 of the corrugated component 1 undergo corresponding elastic deformation. The spacing between the side walls of the concave pipe area 11 and the convex pipe area 12 enables the corrugated component 1 to flexibly expand or bend, thereby effectively absorbing the displacement of the pipeline system, reducing the stress concentration caused by the displacement in the pipeline, and protecting the integrity and stability of the pipeline system.
[0027] The cylinder 41 of the flow guide assembly 4 passes through the pipe 2 and the inner side of the corrugated assembly 1, and plays a role in guiding the flow direction of the medium during the flow of the medium in the pipeline; the drainage groove 42 further optimizes the flow state of the medium in the cylinder, allowing the medium to pass through the expansion joint smoothly and stably. At the same time, the flow guide assembly 4 is located inside the corrugated assembly 1, which can reduce the direct erosion and wear of the corrugated assembly 1 by the medium, thereby extending the service life of the corrugated assembly 1.
[0028] When the bellows assembly 1 is deformed due to pipe displacement, the limiting rod 33 can limit its excessive deformation to a certain extent. The cooperation between the nut 32 and the threaded area 34 can adjust the tightness of the limiting rod 33, thereby setting the deformation range of the bellows assembly 1; the limiting ring 35 plays an auxiliary limiting role to ensure that the expansion joint operates within a safe range.
[0029] The ring body 61 of the seal 6 fits in contact with the inner ring of the stop assembly 3, and its arcuate surface 62 contacts the medium in the pipeline. The close fit between the ring body 61 and the inner ring of the stop assembly 3 and the special shape design of the arcuate surface 62 effectively prevents leakage of the medium in the pipeline, ensuring the sealing of the pipeline system. Whether in normal operation or when the expansion joint is deformed to a certain extent, it can reliably prevent the medium from leaking into the surrounding environment.
[0030] The thermal insulation layer 5 is attached to the outer wall surface of the corrugated component 1, and its function is to reduce the transfer of heat at the expansion joint; in a high-temperature piping system, it can prevent heat from dissipating outward, maintain the temperature of the medium in the pipeline, and reduce heat energy loss; in a low-temperature piping system, it can prevent the introduction of external heat, avoid the adverse effects of temperature changes on the performance of the piping system and the expansion joint, ensure that the expansion joint works in a suitable temperature environment, and maintain its normal mechanical properties and sealing properties.
Claims
1. An adjustable metal pipe expansion joint, comprising a bellows assembly (1), characterized in that: The upper and lower ends of the corrugated component (1) are respectively fixedly connected to a connecting pipe (2), and the outer ends of the connecting pipes (2) at both ends away from the corrugated component (1) are fixedly connected to a limiting component (3); The limiting assembly (3) includes a sleeve (31), a nut (32), a limiting rod (33), a threaded area (34) and a limiting ring (35). The sleeve (31) is provided with two upper and lower groups. The bottom side of the nut (32) is fixedly connected to the top of the limiting rod (33). The limiting rod (33) passes through the side wall of the sleeve (31). The top of the threaded area (34) is fixedly connected to the bottom end of the limiting rod (33). The outer wall of the threaded area (34) passes through the side wall of the sleeve (31) at the lower end. The inner ring of the limiting ring (35) is sleeved on the outer wall of the threaded area (34). The inner sides of the corrugated assembly (1) and the connecting pipe (2) are connected with the guide assembly (4). The outer wall surface of the corrugated assembly (1) is attached with an insulation layer (5). The inner ring of the limiting assembly (3) is provided with a sealing member (6).
2. The adjustable metal pipe expansion joint according to claim 1, characterized in that: The corrugated assembly (1) comprises a concave tube area (11) and a convex tube area (12); the upper and lower ends of the concave tube area (11) are fixedly connected to the inner ends of the two groups of connecting pipes (2), respectively; and the flow guide assembly (4) is connected through the inner side walls of the concave tube area (11) and the convex tube area (12).
3. The adjustable metal pipe expansion joint according to claim 2, characterized in that: The side walls of the convex tube area (12) and the concave tube area (11) are arranged at intervals.
4. The adjustable metal pipe expansion joint according to claim 1, characterized in that: The sealing member (6) passes through and fits on the inner side wall of the sleeve disc (31).
5. The adjustable metal pipe expansion joint according to claim 1, characterized in that: The flow guide assembly (4) comprises a cylinder (41) and a flow guide groove (42), and the cylinder (41) passes through the inner side of the connecting pipe (2) and the corrugated assembly (1).
6. The adjustable metal pipe expansion joint according to claim 5, characterized in that: The drainage groove (42) is provided on the inner side wall of the cylinder (41).
7. The adjustable metal pipe expansion joint according to claim 1, characterized in that: The sealing member (6) comprises a ring body (61) and an arcuate surface (62), wherein the arcuate surface (62) is arranged on the upper half of the inner ring of the ring body (61), the outer side of the ring body (61) is fitted to the inner ring of the limiting assembly (3), and the arcuate surface (62) is located at the inner ring of the ring body (61).