PE (Poly Ethylene) electric melting pipe fitting and post-wiring process thereof
By designing the special structure and heating wire layout of the outer and inner pipe fittings in PE electric fusing fittings, the problem of medium leakage at the connection between the pipe and PE electric fusing fittings in the prior art is solved, the connection strength and sealing are improved, and the connection strength and sealing are ensured. Media transmission security of pipeline systems.
Patent Information
- Application Number
- CN202411343646.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2024-12-13
AI Technical Summary
There is a matching gap when connecting the existing PE electric fused pipe fittings to the pipe in the pipeline system, resulting in the problem of medium leakage.
A PE electric fusing pipe fitting is designed, which includes outer pipe fittings and inner pipe fittings. By setting up structures such as plug-in cavity, outer weld area, inner weld area and clamping ring in the outer pipe fittings and inner pipe fittings, the length and distribution of the heating wire are ensured. Heat is heated evenly and the sealing properties are improved by sealing ring and spiral winding of the heating wire.
It effectively avoids media leakage, enhances the connection strength and sealing between the pipe and PE electric fused pipe fittings, and ensures the safety of medium transmission in the pipeline system.
Smart Images
Figure CN119123207A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of PE electric fusion pipe fittings, in particular to a PE electric fusion pipe fitting and a subsequent wiring process thereof. Background Art
[0002] The main material used for PE electric fusion pipe fittings is polyethylene. The electric heating wire embedded in the inner surface of the pipe fittings is heated by the PE electric fusion pipe fittings to melt the inner surface of the pipe fittings and the outer surface of the pipe. After cooling, the PE electric fusion pipe fittings and the pipe are integrated to achieve the purpose of connection. PE electric fusion pipe fittings play the role of connecting pipes in the pipe system and can meet the needs of connection, branching and turning of different pipeline systems.
[0003] However, when the existing pipes are connected with the PE electric fusion pipe fittings, there is a fitting gap. When the pipeline system transmits the medium, the fitting gap is relatively weak, which is easy to cause medium leakage. Summary of the invention
[0004] The invention provides a PE electric fusion pipe fitting and a subsequent wiring process thereof, which can overcome certain or some defects of the prior art.
[0005] A PE electric fusion pipe fitting according to the present invention comprises an electric fusion pipe fitting body, wherein the electric fusion pipe fitting body comprises an outer pipe fitting and an inner pipe fitting for cooperating with each other; An inserting cavity is formed inside the outer pipe along the length direction, and outer welding areas are formed at both ends of the inner wall of the inserting cavity, and an abutting portion is formed in the middle of the inner wall; A through cavity is formed inside the inner pipe along the length direction, inner welding areas are formed at both ends of the outer wall of the inner pipe, and a clamping ring is formed in the middle of the outer wall; The inner welding area and the outer welding area together form a welding zone for cooperating with the inner wall and the outer wall of the pipe at the same time, and the clamping ring cooperates with the pipe on one side corresponding to the abutment portion to form a limit for the inner pipe.
[0006] Preferably, the outer wall of the outer tube has two wiring terminals, and the inner wall of the plug-in cavity is formed with a mounting groove connected to the two wiring terminals, and the mounting grooves are provided with a spirally wound second heating wire, and a second wire is connected between one ends of the two second heating wires, and the other ends of the two second heating wires are respectively connected to the corresponding wiring terminals.
[0007] The above structure facilitates electric fusion welding with the pipe, and the spiral winding of the second heating wire not only increases the length of the heating wire and improves the heating efficiency, but also ensures the uniform distribution of heat on the outer wall of the pipe.
[0008] Preferably, the second heating wire is located at the installation groove near both ends of the outer tube, and has a distance between it and the abutting portion.
[0009] With the above structure, the fusion joint between the pipe and the outer pipe is located at the end of the outer pipe, which prevents the inner wall of the outer pipe from melting during electric fusion and causing the abutment to move and deform, thereby reducing the impact on the abutment.
[0010] Preferably, the abutment portion and the snap ring are detachably connected, a snapping portion is formed at the corresponding positions of the snap ring and the abutment portion, a snap groove is formed on the side wall of the abutment portion for rotational connection of the snapping portion, the snapping portion has a convex portion, a limiting portion is formed at the snap groove, and the limiting portion is used to limit the convex portion after the snapping portion is rotated.
[0011] By providing an annular abutment portion in the middle of the inner wall of the plug-in cavity of the outer pipe fitting and realizing a detachable connection with the clamping ring of the inner pipe fitting, not only the connection strength between the outer pipe fitting and the pipe is enhanced, but also the sealing of the connection is significantly improved.
[0012] Preferably, an annular groove is formed at the end of the plug-in portion, and a sealing ring is provided in the annular groove.
[0013] Through the above structure, the friction between the pipe and the inner pipe fitting can be increased to improve the connection strength, and the gap between the inner wall of the pipe and the outer wall of the inner pipe fitting can be sealed to improve the sealing performance and reduce the leakage of the medium through the gap between the inner wall of the pipe and the outer wall of the inner pipe fitting.
[0014] Preferably, a second contact piece and a third contact piece are formed at the second conductor, the second contact piece is arranged at a side corresponding to the abutment portion and the clamping ring, and the third contact piece is arranged at an inner wall corresponding to the plug-in cavity and the side wall of the clamping ring; A ring-shaped groove is formed on the outer wall of the plug-in part, and a first heating wire is spirally wound in the groove. The first heating wire has two ends, and the two ends are respectively provided with a first wire and a fourth contact piece. The first wire is arranged on the side wall of the clamping ring corresponding to the second contact piece and is in contact with and connected to the second contact piece. The fourth contact piece is arranged on the top wall of the clamping ring corresponding to the third contact piece and is in contact with and connected to the third contact piece.
[0015] Through the above structure, a first heating wire is arranged at the outer wall of the inner pipe fitting and is connected in parallel with the first heating wire, so that the first heating wire can fuse the outer pipe fitting and the outer wall of the pipe while also fusing the inner wall of the pipe and the outer wall of the inner pipe fitting, so that the inner wall of the pipe and the inner pipe fitting form a sufficient seal, thereby better avoiding leakage of the medium.
[0016] Preferably, the outer wall of one side of the clamping ring corresponding to the abutting portion is located at the center of the outer wall of the inner pipe along the length direction of the inner pipe.
[0017] With the above structure, when the inner pipe is inserted into the outer pipe, the lengths of the two ends of the inner pipe are the same, thereby ensuring that the pipe force and contact area at the two ends are the same.
[0018] Preferably, the first heating wire is located in the groove near both ends of the outer tube, and has a spacing between the first heating wire and the clamping ring and the annular groove.
[0019] Through the above structure, the influence on the clamping ring and the ring groove during electric fusion is reduced, so as to better ensure the matching effect between the clamping ring and the abutting part and the matching effect between the sealing ring and the inner wall of the pipe.
[0020] Preferably, both ends of the first heating wire are connected to the first wire and the fourth contact piece through the first contact piece.
[0021] Through the above structure, the influence of the first heating wire on other parts of the inner pipe is reduced.
[0022] A post-wiring process for PE electric fusion pipe fittings, which is used to process any of the above-mentioned PE electric fusion pipe fittings, comprising: Conduct self-inspection on the semi-finished products of inner and outer pipe fittings, and clamp them after they pass the inspection; Cutting grooves inside the plug-in cavity by using a wiring tool to obtain installation grooves; After the groove is cut, the second heating wire will be pressed into the cut installation groove, and the second wire will be connected to the second heating wire to complete the wire layout; The outer wall is cut by a routing tool to obtain a groove; After cutting, it will be pressed into the cut groove, and the first contact piece will be connected to the first heating wire to complete the wire laying.
[0023] The beneficial effects of the present invention are as follows: 1. By matching the outer pipe fittings with the inner pipe fittings, an inner pipe fitting is inserted between the inner walls of adjacent pipes, and the outer walls of adjacent pipes match the inner walls of the outer pipe fittings. In addition, inner and outer fusion areas are provided to improve the matching degree between the pipe and the PE electric fusion pipe fitting body, and avoid the matching gap between the existing pipe and the PE electric fusion pipe fitting. When the pipeline system transmits the medium, the matching gap is relatively weak, which is easy to cause the medium leakage problem; 2. A first heating wire is arranged at the outer wall of the inner pipe fitting and connected in parallel with the first heating wire, so that the first heating wire fuses the electric fusion pipe fitting body with the outer wall of the pipe while also fusing the inner wall of the pipe with the outer wall of the inner pipe fitting, so that the inner wall of the pipe and the inner pipe fitting form a sufficient seal, thereby better avoiding leakage of the medium. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of a PE electric fusion pipe fitting.
[0025] Figure 2 This is a schematic diagram of the overall explosion structure of a PE electric fusion pipe fitting.
[0026] Figure 3It is a schematic diagram of the overall cross-sectional structure of a PE electric fusion pipe fitting.
[0027] Figure 4 for Figure 3 A partial enlarged schematic diagram in the middle.
[0028] Figure 5 This is a schematic diagram of the inner pipe structure of a PE electric fusion pipe fitting.
[0029] Figure 6 The figure is a schematic diagram of the side cross-sectional structure of an electric fusion pipe fitting body of a PE electric fusion pipe fitting.
[0030] Figure 7 The figure is a schematic diagram of the front cross-sectional structure of an electric fusion pipe fitting body of a PE electric fusion pipe fitting. DETAILED DESCRIPTION
[0032] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.
[0033] Example 1 See also Figure 1-2 This embodiment provides a PE electric fusion pipe fitting, which includes an electric fusion pipe fitting body 100, and the electric fusion pipe fitting body 100 includes an outer pipe fitting 120 and an inner pipe fitting 220 for matching with each other; The outer tube 120 has an inserting cavity 210 formed inside along the length direction, and the two ends of the inner wall of the inserting cavity 210 form an outer welding area, and the middle of the inner wall forms an abutment portion 310; A through cavity is formed inside the inner tube 220 along the length direction, inner welding areas are formed at both ends of the outer wall of the inner tube 220, and a clamping ring 410 is formed in the middle of the outer wall; The inner welding area and the outer welding area together form a welding zone for cooperating with the inner wall and the outer wall of the tube 110 at the same time. The clamping ring 410 cooperates with the tube 110 on one side corresponding to the abutment portion 310 to limit the inner pipe 220.
[0034] A PE electric fusion pipe fitting disclosed in the present invention is arranged by matching an outer pipe fitting 120 and an inner pipe fitting 220 so that an inner pipe fitting 220 is inserted between inner walls of adjacent pipes 110, and the outer walls of adjacent pipes 110 are matched with the inner wall of the outer pipe fitting 120, and an inner welding area and an outer welding area are provided, thereby improving the matching degree between the pipe 110 and the PE electric fusion pipe fitting body 100, avoiding the problem of a matching gap between the existing pipe 110 and the PE electric fusion pipe fitting, which causes the matching gap to be relatively weak when the pipe system transmits the medium, and is prone to cause the medium to leak.
[0035] It is understandable that the clamping ring 410 cooperates with the pipe 110 on one side corresponding to the abutment portion 310 to pre-fix the adjacent pipes 110 to be connected, which facilitates the subsequent electric fusion operation and improves the electric fusion connection effect.
[0036] See Figure 3 In this embodiment, the outer wall of the outer tube 120 has two wiring terminals 320, and the inner wall of the plug-in cavity 210 is formed with a mounting groove 610 connected to the two wiring terminals 320, and the mounting groove 610 is provided with a spirally wound second heating wire 620, and a second wire 450 is connected between one ends of the two second heating wires 620, and the other ends of the two second heating wires 620 are respectively connected to the corresponding wiring terminals 320.
[0037] The above structure facilitates electric fusion welding of 120 and pipe 110 . The spiral winding of the second heating wire 620 not only increases the length of the heating wire and improves the heating efficiency, but also ensures uniform distribution of heat on the outer wall of the pipe 110 .
[0038] It is understandable that by inserting the inner pipe fitting 220 into the inner wall of the pipe 110, the outer wall of the inner pipe fitting 220 can provide support for the pipe 110 during electric melting, thereby reducing gaps or air cavities caused by welding during electric melting and further improving the welding effect.
[0039] See Figure 3 In this embodiment, the second heating wire 620 is located at the mounting groove 610 close to both ends of the outer tube 120 and has a spacing with the abutting portion 310 .
[0040] With the above structure, the fusion joint between the pipe 110 and the outer pipe 120 is located at the end of the outer pipe 120 , which prevents the inner wall of the outer pipe 120 from melting and causing the abutment 310 to move and deform during electric fusion, thereby reducing the impact on the abutment 310 .
[0041] See Figure 4-5 In this embodiment, the abutting portion 310 and the clamping ring 410 are detachably connected, and a clamping portion 510 is formed at the corresponding position of the clamping ring 410 and the abutting portion 310. A clamping groove 630 for the clamping portion 510 to be rotatably connected is formed on the side wall of the abutting portion 310. The clamping portion 510 has a convex portion, and a limiting portion 710 is formed at the clamping groove 630. The limiting portion 710 is used to limit the convex portion after the clamping portion 510 is rotated.
[0042] By providing an annular abutment portion 310 in the middle of the inner wall of the insertion cavity 210 of the outer pipe fitting 120 and realizing a detachable connection with the clamping ring 410 of the inner pipe fitting 220, not only the connection strength between the outer pipe fitting 120 and the pipe 110 is enhanced, but also the sealing of the connection is significantly improved.
[0043] See Figure 4 In this embodiment, an annular groove is formed at the end of the plug-in portion, and a sealing ring 520 is provided in the annular groove.
[0044] Through the above structure, the friction between the pipe 110 and the inner pipe fitting 220 can be increased to improve the connection strength, and the gap between the inner wall of the pipe 110 and the outer wall of the inner pipe fitting 220 can be sealed to improve the sealing performance and reduce the leakage of the medium through the gap between the inner wall of the pipe 110 and the outer wall of the inner pipe fitting 220.
[0045] Example 2 See Figure 3-4 This embodiment also provides a PE electric fusion pipe fitting, which differs from the first embodiment in that: a second contact piece 460 and a third contact piece 470 are formed at the second conductor 450, the second contact piece 460 is arranged at a side corresponding to the abutment portion 310 and the clamping ring 410, and the third contact piece 470 is arranged at the inner wall corresponding to the side wall of the plug-in cavity 210 and the clamping ring 410; A ring-shaped groove is formed on the outer wall of the plug-in part, and a first heating wire 420 spirally wound is arranged in the groove. The first heating wire 420 has two ends, and the two ends are respectively provided with a first wire 430 and a fourth contact piece 480. The first wire 430 is arranged on the side wall of the clamping ring 410 corresponding to the second contact piece 460 and is in contact with and connected to the second contact piece 460. The fourth contact piece 480 is arranged on the top wall of the side corresponding to the clamping ring 410 and the third contact piece 470 and is in contact with and connected to the third contact piece 470.
[0046] Through the above structure, a first heating wire 420 is arranged at the outer wall of the inner pipe fitting 220 and is connected in parallel with the first heating wire 420, so that the first heating wire 420 can fuse the outer pipe fitting 120 and the outer wall of the pipe 110 while also fusing the inner wall of the pipe 110 and the outer wall of the inner pipe fitting 220, so that the inner wall of the pipe 110 and the inner pipe fitting 220 form a sufficient seal, thereby better avoiding leakage of the medium.
[0047] See Figure 4 In this embodiment, the outer wall of one side of the clamping ring 410 corresponding to the abutting portion 310 is located at the center of the outer wall of the inner tube 220 along the length direction of the inner tube 220 .
[0048] Through the above structure, when the inner pipe 220 is inserted into the outer pipe 120, the lengths of the two ends of the inner pipe 220 are the same, thereby ensuring that the force and contact area of the pipe 110 at the two ends are the same.
[0049] See Figure 3 In this embodiment, the first heating wire 420 is located in the groove near the two ends of the outer tube 120, and has a distance between the clamping ring 410 and the annular groove.
[0050] Through the above structure, the influence on the clamping ring 410 and the ring groove during electric fusion is reduced, so as to better ensure the matching effect between the clamping ring 410 and the abutting portion 310 and the matching effect between the sealing ring 520 and the inner wall of the pipe 110.
[0051] See Figure 3 In this embodiment, both ends of the first heating wire 420 are connected to the first wire 430 and the fourth contact piece 480 through the first contact piece 440 .
[0052] Through the above structure, the influence of the first heating wire 420 on other parts of the inner tube 220 is reduced.
[0053] Example 3 This embodiment provides a post-wiring process for a PE electric fusion pipe fitting, which is used to process the PE electric fusion pipe fitting described in any one of Embodiment 1 or Embodiment 2, including: Conduct self-inspection on the semi-finished products of the inner pipe fitting 220 and the outer pipe fitting 120, and clamp them after they pass the inspection; Cutting the inside of the plug-in cavity 210 with a wiring tool to obtain a mounting groove 610; After the groove is cut, the second heating wire 620 will be pressed into the cut installation groove 610, and the second wire 450 will be connected to the second heating wire 620 to complete the wire routing; Cutting the outer wall 220 with a routing tool to obtain a groove; After the groove is cut, 420 will be pressed into the cut groove, and the first contact piece 440 will be connected to the first heating wire 420 to complete the wire laying.
[0054] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.
[0055] The present invention and its implementation methods are described schematically above, and the description is not restrictive. The embodiments shown in the embodiments are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the embodiments and designs a structure and an implementation method similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.
Claims
1. A PE electric fusion pipe fitting, characterized in that: The electric fusion pipe fitting body (100) comprises an outer pipe fitting (120) and an inner pipe fitting (220) for matching with each other; An insert cavity (210) is formed inside the outer pipe (120) along the length direction, and outer welding areas are formed at both ends of the inner wall of the insert cavity (210), and an abutment portion (310) is formed in the middle of the inner wall; A through cavity is formed inside the inner tube (220) along the length direction, inner welding areas are formed at both ends of the outer wall of the inner tube (220), and a clamping ring (410) is formed in the middle of the outer wall; The inner welding area and the outer welding area together form a welding zone for simultaneously cooperating with the inner wall and the outer wall of the tube (110), and the clamping ring (410) cooperates with the tube (110) on one side corresponding to the abutment portion (310) to form a limit for the inner tube (220).
2. A PE electric fusion pipe fitting according to claim 1, characterized in that: The outer wall of the outer tube (120) is provided with two wiring terminals (320), and the inner wall of the plug-in cavity (210) is provided with a mounting groove (610) connected to the two wiring terminals (320), and the mounting grooves (610) are each provided with a second heating wire (620) wound in a spiral manner, and a second conductive wire (450) is connected between one ends of the two second heating wires (620), and the other ends of the two second heating wires (620) are respectively connected to the corresponding wiring terminals (320).
3. A PE electric fusion pipe fitting according to claim 1, characterized in that: The abutting portion (310) is detachably connected to the snap ring (410); a snap ring (510) is formed at a position corresponding to the snap ring (410) and the abutting portion (310); a snap groove (630) for rotationally connecting the snap ring (510) is formed on a side wall of the abutting portion (310); the snap ring (510) has a convex portion; a limiting portion (710) is formed at the snap groove (630); and the limiting portion (710) is used to limit the convex portion after the snap ring (510) rotates.
4. A PE electric fusion pipe fitting according to claim 1, characterized in that: A second contact piece (460) and a third contact piece (470) are formed at the second conductive wire (450); the second contact piece (460) is arranged on a side of the abutment portion (310) corresponding to the clamping ring (410); and the third contact piece (470) is arranged on an inner wall of the plug-in cavity (210) corresponding to a side wall of the clamping ring (410); An annular groove is formed on the outer wall of the plug-in portion, and a first heating wire (420) is arranged in a spirally wound manner in the groove. The first heating wire (420) has two ends, and the two ends are respectively provided with a first conductive wire (430) and a fourth contact piece (480). The first conductive wire (430) is arranged on the side wall of the clamping ring (410) corresponding to the second contact piece (460) and is in contact with and connected to the second contact piece (460). The fourth contact piece (480) is arranged on the top wall of the clamping ring (410) corresponding to the third contact piece (470) and is in contact with and connected to the third contact piece (470).
5. A PE electric fusion pipe fitting according to claim 1, characterized in that: The outer wall of one side of the clamping ring (410) corresponding to the abutment portion (310) is located at the center of the outer wall of the inner tube (220) along the length direction of the inner tube (220).
6. A PE electric fusion pipe fitting according to claim 2, characterized in that: The second heating wire (620) is located in the installation groove (610) close to both ends of the outer tube (120), and has a distance from the abutment portion (310).
7. A PE electric fusion pipe fitting according to claim 1, characterized in that: An annular groove is formed at the end of the plug-in portion, and a sealing ring (520) is provided in the annular groove.
8. A PE electric fusion pipe fitting according to claim 4, characterized in that: The first heating wire (420) is located in the groove near the two ends of the outer tube (120), and has a spacing between the clamping ring (410) and the annular groove.
9. A PE electric fusion pipe fitting according to claim 4, characterized in that: Both ends of the first heating wire (420) are connected to the first conductive wire (430) and the fourth contact sheet (480) via the first contact sheet (440).
10. A post-wiring process for PE electric fusion pipe fittings, which is used to process the PE electric fusion pipe fittings according to any one of claims 1 to 9, comprising: Conducting self-inspection on the semi-finished inner pipe fitting (220) and the outer pipe fitting (120), and clamping them after they pass the inspection; Using a wiring cutter to cut a groove inside the plug-in cavity (210) to obtain a mounting groove (610); After the groove is cut, the second heating wire (620) is pressed into the cut installation groove (610), and the second conductive wire (450) is connected to the second heating wire (620) to complete the wire layout; Cutting the outer wall of (220) by a routing cutter to obtain a groove; After the groove is cut, the (420) will be pressed into the cut groove, and the first contact piece (440) and the first heating wire (420) will be connected to complete the wire laying.