External-pressure-resistant MPP (modified polypropylene) pipe
By introducing reinforcing devices and protective layers into the MPP pipe, the problems of insufficient ring stiffness and poor resistance to external pressure are solved, the pipe body's resistance to extrusion is enhanced, and reliability is ensured in deep burial or high external pressure environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional MPP pipes suffer from insufficient ring stiffness and poor resistance to external pressure, leading to pipe deformation, crushing, or even rupture, which affects the reliability of cables and pipelines, especially in deep burial or high external pressure environments.
The tube is reinforced with a strengthening device, including a reinforcing frame, connecting arc plate, solid support strip, partition assembly and buffer assembly, combined with a wear-resistant layer and a moisture-proof layer, to enhance the tube's resistance to compression and its protective performance.
This improves the MPP pipe's resistance to extrusion, prevents deformation and cracking, extends its service life, and ensures the safety of cables and pipelines.
Smart Images
Figure CN224110800U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of pipe material for electric power and communication engineering, especially to a MPP pipe of external pressure resistance. BACKGROUND
[0002] Modified polypropylene (MPP) pipe is widely used in electric power cable protection, communication engineering and underground comprehensive pipe gallery and other fields due to its excellent electrical insulation, high temperature resistance and corrosion resistance. However, in the buried laying scene, the MPP pipe needs to bear complex external pressure such as soil load, underground water pressure and traffic dynamic load for a long time.
[0003] The traditional MPP pipe often deforms, collapses or even ruptures due to insufficient ring stiffness and poor external pressure resistance, which further causes cable damage, pipeline leakage and other problems, seriously restricting its reliability in deep burial or high external pressure environment. SUMMARY
[0004] The utility model discloses a MPP pipe of external pressure resistance, solve the traditional MPP pipe often deforms, collapses or even ruptures due to insufficient ring stiffness and poor external pressure resistance, which further causes cable damage, pipeline leakage and other problems, seriously restricting its reliability in deep burial or high external pressure environment.
[0005] To achieve the above purpose, the utility model provides a MPP pipe of external pressure resistance, including outer pipe body and inner pipe body, still includes reinforcing device, the reinforcing device includes reinforcing frame, first connecting arc plate, solid support strip, separation component and buffer assembly, the first connecting arc plate fixed mounting in the inner pipe body, the reinforcing frame is fixedly installed on the first connecting arc plate, the solid support strip is fixedly installed in the reinforcing frame, the separation component sets up on the reinforcing frame, the outer pipe body passes through the buffer assembly and is installed in the inner pipe body outside.
[0006] Among them, the separation component includes second connecting arc plate and separation strip, and the second connecting arc plate is fixedly installed in the inner pipe body and is close to the first connecting arc plate, and the two ends of the separation strip are fixedly connected with the second connecting arc plate and the reinforcing frame respectively.
[0007] Among them, the buffer assembly includes elastic ball and limiting member, the elastic ball is installed in the inner pipe body outside through the limiting member, and the outer pipe body is fixedly connected with the elastic ball.
[0008] Among them, the limiting member includes third connecting arc plate and limiting rod, and the third connecting arc plate is fixedly installed on the inner pipe body outside and is located on the side of the inner pipe body close to the elastic ball, and the limiting rod is fixedly installed on the third connecting arc plate.
[0009] The outer pipe body is further provided with a wear-resistant layer and a moisture-proof layer, and the moisture-proof layer is fixedly installed on the outer side of the outer pipe body, and the wear-resistant layer is fixedly installed on the outer side of the moisture-proof layer.
[0010] The utility model discloses a kind of MPP pipes of external pressure resistance, by the setting of the partition strip and the second connecting arc plate, to be able to separate the cable of the inner pipe body, facilitate the installation of cable, by the setting of the moisture-proof layer, groundwater penetration can be blocked, by the setting of the wear-resistant layer, so that the outer pipe body can resist soil friction, prolong service life, when the outer pipe body is extruded externally, the elastic ball inside the outer pipe body is extruded, and elastic deformation occurs between the limiting rod, buffer extrusion force, reduce the extrusion received by the inner pipe body, and the reinforcing frame inside the inner pipe body is in triangular structure, when the inner pipe body is extruded, the extrusion resistance of the inner pipe body can be improved, avoid the deformation of the inner pipe body, and cause the cable inside the inner pipe body to be damaged. BRIEF DESCRIPTION OF DRAWINGS
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows.
[0012] Figure 1 It is a whole structure schematic view of a kind of MPP pipe of external pressure resistance of the utility model.
[0013] Figure 2 It is a structure schematic view of reinforcing device of the utility model.
[0014] In the drawing: 101-outer pipe body, 102-inner pipe body, 103-reinforcing frame, 104-first connecting arc plate, 105-solid support strip, 106-second connecting arc plate, 107-partition strip, 108-elastic ball, 109-third connecting arc plate, 110-limiting rod, 111-wear-resistant layer, 112-moisture-proof layer. DETAILED DESCRIPTION
[0015] The embodiments of the utility model will be described in detail below, the examples of the embodiments are shown in the drawings, the embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.
[0016] The embodiments of the present application are:
[0017] Please refer to Figures 1-2 , Figure 1 It is a whole structure schematic view of a kind of MPP pipe of external pressure resistance of the utility model, Figure 2 It is a structure schematic view of reinforcing device of the utility model.
[0018] The utility model provides a kind of MPP pipe of external pressure resistance: including outer tube body 101 and inner tube body 102, still including reinforcing device, the reinforcing device includes reinforcing frame 103, first connecting arc plate 104, solid support strip 105, partition component and buffer component, the partition component includes second connecting arc plate 106 and partition strip 107, the buffer component includes elastic ball 108 and limiting member, the limiting member includes third connecting arc plate 109 and limiting rod 110, the outer tube body 101 still be equipped with wear layer 111 and damp proof layer 112, the conventional MPP pipe is often caused by ring stiffness, the problem that the ability of external pressure resistance is poor leads to pipe body deformation, crush even rupture, and then causes cable damage, pipeline leakage etc., seriously restrict its reliability in deep buried or high external pressure environment, the foregoing scheme can be used in the scene of power cable pressure protection.
[0019] In the embodiment, the solid support strip 105 and the reinforcing frame 103 can improve the extrusion resistance of the inner tube body 102 and prevent the inner tube body 102 from deforming.
[0020] The first connecting arc plate 104 is fixedly installed in the inner tube body 102, the reinforcing frame 103 is fixedly installed on the first connecting arc plate 104, the solid support strip 105 is fixedly installed in the reinforcing frame 103, the partition component is arranged on the reinforcing frame 103, the outer tube body 101 is installed outside the inner tube body 102 through the buffer component, the first connecting arc plate 104 is bonded inside the inner tube body 102 and adheres to the inner side of the inner tube body 102, the number of the first connecting arc plate 104 is three groups and is distributed in a triangular shape, the reinforcing frame 103 is triangular, the reinforcing frame 103 is arranged between the three groups of first connecting arc plates 104, the solid support strip 105 is welded in the reinforcing frame 103, and the solid support strip 105 is located at the center of the inner tube body 102. The first connecting arc plate 104 is arranged to facilitate the installation of the reinforcing frame 103, the partition component is arranged to facilitate the installation of the cable inside the inner tube body 102, the buffer component can buffer the extrusion of the outer tube body 101, and the solid support strip 105 can improve the extrusion resistance of the reinforcing frame 103. The reinforcing frame 103 is arranged in a triangular shape to improve the extrusion resistance of the inner tube body 102 and prevent the inner tube body 102 from deforming.
[0021] Secondly, the second connecting arc plate 106 is fixedly installed in the inner pipe body 102 and is close to the first connecting arc plate 104; the two ends of the partition strip 107 are fixedly connected with the second connecting arc plate 106 and the reinforcing frame 103 respectively, the second connecting arc plate 106 is bonded on the left and right sides of the inner pipe body 102, one group of the partition strip 107 is bonded on each group of the second connecting arc plate 106, the second connecting arc plate 106 is attached to the inner side of the inner pipe body 102, and the cable in the inner pipe body 102 can be separated through the arrangement of the partition strip 107, so that the installation of the cable is facilitated.
[0022] Thirdly, the elastic ball 108 is installed outside the inner pipe body 102 through the limiting member, the outer pipe body 101 is fixedly connected with the elastic ball 108, the elastic ball 108 is made of rubber material, the elastic ball 108 has elasticity, the elastic ball 108 is bonded between the inner pipe body 102 and the outer pipe body 101, the number of the elastic ball 108 is multiple and is annularly distributed between the inner pipe body 102 and the outer pipe body 101, and the extrusion on the outer pipe body 101 can be buffered through the arrangement of the elastic ball 108, so that the extrusion force on the inner pipe body 102 is reduced.
[0023] Thirdly, the third connecting arc plate 109 is fixedly installed outside the inner pipe body 102 and is located on the side of the inner pipe body 102 close to the elastic ball 108; the limiting rod 110 is fixedly installed on the third connecting arc plate 109, one group of the third connecting arc plate 109 and the limiting rod 110 are arranged on the two sides of each group of the elastic ball 108, the third connecting arc plate 109 is fused outside the inner pipe body 102, the limiting rod 110 is fused outside the third connecting arc plate 109, the inner side of the third connecting arc plate 109 is in an arc-shaped structure and is attached to the outer side of the inner pipe body 102, and the limiting effect of the elastic ball 108 can be achieved through the arrangement of the third connecting arc plate 109 and the limiting rod 110.
[0024] Finally, the moisture-proof layer 112 is fixedly installed outside the outer pipe body 101; the wear-resistant layer 111 is fixedly installed outside the moisture-proof layer 112, the moisture-proof layer 112 is bonded on the outer pipe body 101, the moisture-proof layer 112 is made of an aluminum-plastic composite film, the wear-resistant layer 111 is made of an ultrahigh molecular weight polyethylene film, the moisture-proof layer 112 can block the penetration of underground water, and the wear-resistant layer 111 can resist soil friction and prolong the service life.
[0025] In the embodiment, the cable of the inner pipe body 102 is separated by the partition strip 107 and the second connecting arc plate 106, the installation of the cable is facilitated, the moisture-proof layer 112 is arranged to prevent the groundwater from permeating, the wear-resistant layer 111 is arranged to enable the outer pipe body 101 to resist soil friction and prolong the service life, when the outer pipe body 101 is extruded from outside, the elastic balls 108 inside the outer pipe body 101 are extruded and elastically deformed between the limiting rods 110 to buffer the extrusion force and reduce the extrusion force received by the inner pipe body 102, the reinforcing frame 103 inside the inner pipe body 102 has a triangular structure to improve the extrusion resistance of the inner pipe body 102 when the inner pipe body 102 is extruded, the deformation of the inner pipe body 102 is avoided, and the cable inside the inner pipe body 102 is prevented from being damaged.
[0026] The above disclosure is only one or more preferred embodiments of the application, and cannot limit the scope of the application. Those skilled in the art can understand that the implementation of all or part of the above embodiments and the equivalent changes made according to the claims of the application still belong to the scope covered by the application.
Claims
1. An MPP pipe resistant to external pressure, comprising an outer pipe body and an inner pipe body, characterized in that, it further comprises a reinforcing device; the reinforcing device comprises a reinforcing frame, a first connecting arc plate, a solid support bar, a separation assembly and a buffer assembly, the first connecting arc plate is fixedly installed in the inner pipe body, the reinforcing frame is fixedly installed on the first connecting arc plate, the solid support bar is fixedly installed in the reinforcing frame, the separation assembly is arranged on the reinforcing frame, and the outer pipe body is installed outside the inner pipe body through the buffer assembly.
2. The MPP pipe resistant to external pressure according to claim 1, characterized in that, the separation assembly comprises a second connecting arc plate and a separation bar, the second connecting arc plate is fixedly installed in the inner pipe body and is close to the first connecting arc plate; and the two ends of the separation bar are fixedly connected with the second connecting arc plate and the reinforcing frame respectively.
3. The MPP pipe resistant to external pressure according to claim 1, characterized in that, the buffer assembly comprises an elastic ball and a limiting member, the elastic ball is installed outside the inner pipe body through the limiting member, and the outer pipe body is fixedly connected with the elastic ball.
4. The MPP pipe resistant to external pressure according to claim 3, characterized in that, the limiting member comprises a third connecting arc plate and a limiting rod, the third connecting arc plate is fixedly installed outside the inner pipe body and is located on the side of the inner pipe body close to the elastic ball; and the limiting rod is fixedly installed on the third connecting arc plate.
5. The MPP pipe resistant to external pressure according to claim 1, characterized in that, a wear-resistant layer and a moisture-proof layer are further arranged on the outer pipe body, the moisture-proof layer is fixedly installed outside the outer pipe body, and the wear-resistant layer is fixedly installed outside the moisture-proof layer.