Pipe fitting and pipeline connecting structure thereof
By setting a limiting ring and an inner liner at the end of the thin-walled pipe fitting, and utilizing the shell and sealing ring structure of the pipe joint, the problems of easy deformation and corrosion of thin-walled stainless steel pipe fittings are solved, achieving high-strength connection and leak-proof effect, extending service life and reducing cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2026-04-03
AI Technical Summary
Existing thin-walled stainless steel pipe fittings are prone to deformation and corrosion during the connection process, leading to leakage at the connection points, increased costs, and short service life.
A raised first limiting ring and inner bushing are provided at the end of the thin-walled pipe fitting, and connected by a pipe joint. The joint is equipped with an upper shell, a lower shell, a sealing ring and fasteners to form a stable installation space to enhance the connection strength and sealing performance.
It improves the mechanical tensile strength of pipe fittings, prevents leakage, extends service life, and reduces costs.
Smart Images
Figure CN224079753U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe fittings, and in particular to a pipe fitting and its pipe connection structure. Background Technology
[0002] Currently, the transportation of gases, liquids, and other fluids all require the use of pipe fittings. Long-distance transportation often requires connecting multiple pipe fittings. For the connection between thin-walled stainless steel pipes, due to the thin walls, the pipe fitting connection process has the following disadvantages: a connection structure, such as nuts and pipe fittings, is still required at the pipe connection point, increasing costs and making it uneconomical; the connection process can cause deformation of the pipe wall at the connection point, which can easily lead to leakage when the substance is transported inside the pipe; due to the differences in materials and structures between the connection structure and the pipe itself, it is easily corroded by the environment, causing damage to the pipe at the connection point first and reducing its service life. Utility Model Content
[0003] The first technical problem to be solved by this utility model is to provide a pipe fitting that can strengthen the connection part in light of the above-mentioned existing technology.
[0004] The second technical problem to be solved by this utility model is to provide a pipeline connection structure that can strengthen the connection parts in light of the above-mentioned existing technology.
[0005] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a pipe fitting with a thin wall and a first limiting ring protruding on the outer peripheral wall of the end, characterized in that: a bushing is provided inside the end of the pipe fitting.
[0006] Preferably, the bushing has a second limiting ring corresponding to the first limiting ring.
[0007] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: a pipeline connection structure, characterized in that: it includes two pipe fittings as described above, wherein the ends of the first pipe fitting and the second pipe fitting are connected by a pipeline joint.
[0008] Pipe joints have various structures. From the perspective of structural simplicity, preferably, the pipe joint includes an upper shell and a lower shell that are arranged around the connection between the first pipe fitting and the second pipe fitting. The upper shell and the lower shell are arranged opposite to each other and can be spliced to form an installation space for accommodating the pipe fitting.
[0009] To enhance the sealing performance of the pipe joints, a sealing ring is provided on the outside of the connection between the first and second pipe fittings. The sealing ring is located on the inner side of the upper and lower housings and is housed within the installation space.
[0010] In order to enable the upper and lower housings to be joined together to form an installation space for accommodating pipelines, both the upper and lower housings extend to both sides with side edges. The side edges have first connection holes, and the upper and lower housings are detachably connected by fasteners passing through the first connection holes.
[0011] To further enhance the stability of the connection between the upper and lower housings, a pressure plate is provided above the side. The pressure plate has a second connection hole corresponding to the first connection hole. Fasteners pass through the second connection hole and the first connection hole to fix the pressure plate to the side.
[0012] To facilitate the installation of pipe fittings, the upper and lower housings have convex rings that are adapted to the first limiting ring.
[0013] Compared with the prior art, the advantages of this utility model are as follows: the outer peripheral wall of the thin-walled pipe end has a raised first limiting ring and a bushing is provided inside the end, which increases the tensile strength of the pipe end. When the ends of the first pipe and the second pipe are connected through the pipe joint, the pipe end is not easily deformed, which improves the mechanical tensile strength. There will be no leakage when transporting materials in the pipe, which ensures the service life of the pipe and saves costs. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the pipeline connection structure in an embodiment of the present utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the first pipe fitting in this embodiment of the present utility model;
[0016] Figure 3 This is a schematic diagram of the pipe joint structure in an embodiment of this utility model;
[0017] Figure 4 This is a partially exploded view of the pipeline connection structure in an embodiment of this utility model;
[0018] Figure 5 This is a partial cross-sectional view of the pipeline connection structure in an embodiment of this utility model;
[0019] Figure 6 This is a partial cross-sectional view of the pipeline connection structure from another angle in an embodiment of this utility model. Detailed Implementation
[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0021] like Figure 1-6 As shown, a pipeline connection structure in this embodiment includes a first pipe fitting 1, a second pipe fitting 2, and a pipeline connector 3. The ends of the first pipe fitting 1 and the second pipe fitting 2 are connected by the pipeline connector 3.
[0022] The first pipe fitting 1 and the second pipe fitting 2 have the same structure. Taking the first pipe fitting 1 as an example, the specific structure will be described. The first pipe fitting 1 has a thin wall, and the outer peripheral wall of the end has a protruding first limiting ring 11. The end has a bushing 12, and the bushing 12 has a second limiting ring 121 corresponding to the first limiting ring 11. The first limiting ring 11 and the second limiting ring 121 can be formed by stamping.
[0023] In this embodiment, the pipe connector 3 includes an upper housing 31, a lower housing 32, a sealing ring 33, a fastener 34, a pressure plate 35, and a sheath 36. The upper housing 31, the lower housing 32, and the sealing ring 33 are arranged around the outside of the connection between the first pipe fitting 1 and the second pipe fitting 2. The upper housing 31 and the lower housing 32 have a convex ring 3d that is adapted to and corresponds to the first limiting ring 11, and sheaths 36 are provided on both sides of the sealing ring 33.
[0024] Both the upper housing 31 and the lower housing 32 have side edges 3a extending to both sides. Each side edge 3a has a first connecting hole 3b. The upper housing 31 and the lower housing 32 are detachably connected by fasteners 34 passing through the first connecting holes 3b. A pressure plate 35 is provided above the side edge 3a. The pressure plate 35 has a second connecting hole 3c corresponding to the first connecting hole 3b. The fasteners 34 pass through the second connecting hole 3c and the first connecting hole 3b to fix the pressure plate 35 to the side edge 3a.
[0025] Thus, the upper housing 31 and the lower housing 32 are arranged opposite to each other and can be spliced to form an installation space for accommodating the pipe fitting. The sealing ring 33 is located inside the upper housing 31 and the lower housing 32 and is accommodated in the installation space.
Claims
1. A pipe element, the wall of which is thin, the peripheral wall of the end portion of which has a first limiting ring (11) which is raised, characterized in that: The pipe end is internally provided with a bushing (12); the bushing (12) is provided with a second limiting ring (121) corresponding to the first limiting ring (11).
2. A pipe connection structure characterized by: The application relates to a pipe joint (3) connecting the end of a first pipe (1) and a second pipe (2).
3. The pipe connection structure according to claim 2, characterized by: The pipe joint (3) comprises an upper shell (31) and a lower shell (32) arranged outside the connecting position of the first pipe (1) and the second pipe (2), and the upper shell (31) and the lower shell (32) are oppositely arranged and can be spliced to form an installation space for accommodating the pipes.
4. The pipe connection structure according to claim 3, characterized by: The first pipe (1) and the second pipe (2) are provided with a sealing ring (33) outside the connecting position, and the sealing ring (33) is arranged on the inner side of the upper shell (31) and the lower shell (32) and accommodated in the installation space.
5. The pipe connection structure according to claim 4, characterized by: The upper shell (31) and the lower shell (32) are both extended to both sides and provided with side edges (3a), and the side edges (3a) are provided with first connecting holes (3b); the upper shell (31) and the lower shell (32) are detachably connected through fasteners (34) penetrating through the first connecting holes (3b).
6. The pipe connection structure according to claim 5, characterized by: The side edges (3a) are provided with pressing plates (35) above the side edges (3a), and the pressing plates (35) are provided with second connecting holes (3c) corresponding to the first connecting holes (3b); the fasteners (34) penetrate through the second connecting holes (3c) and the first connecting holes (3b) to fix the pressing plates (35) and the side edges (3a).
7. The pipe connection structure according to claim 6, characterized by: The upper shell (31) and the lower shell (32) are provided with convex rings (3d) corresponding to the first limiting ring (11).