MPP pipe with good sealing convenience
By setting inner and outer sealing rings at the socket end and socket of the MPP pipe, and tightly fitting them with clamps, the problem of decreased sealing performance of MPP pipe under temperature difference is solved, and a better sealing effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LAIWU LUNENG KAIYUAN GRP ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-31
AI Technical Summary
Existing MPP pipes are prone to cracking at the connection points when there is a large temperature difference, which leads to a decrease in sealing performance.
Inner and outer sealing rings are installed at the socket end and socket of the MPP pipe, and are tightly fitted with clamps to form a sealing structure to prevent the connection from falling off.
This improves the sealing performance of MPP pipes, prevents cracking at the connection points, and ensures good sealing.
Smart Images
Figure CN224582789U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of MPP pipe technology, and in particular relates to an MPP pipe with good sealing performance. Background Technology
[0002] MPP pipe, also known as MPP power cable protection pipe, is divided into open-cut and trenchless types. Trenchless MPP pipe is also called MPP jacking pipe or drag pipe. MPP pipe uses modified polypropylene as the main raw material. It has the characteristics of high temperature resistance and external pressure resistance, and is suitable for medium and low voltage power transmission cable ducts below 10KV.
[0003] Existing MPP pipes are typically joined via heat fusion. However, under significant temperature differences, the joints are prone to cracking, leading to a decrease in the pipe's sealing performance. Therefore, we propose a new type of MPP pipe that offers superior sealing performance. Utility Model Content
[0004] The purpose of this invention is to address the aforementioned technical problems by providing an MPP pipe that offers good sealing performance and avoids the degradation of the sealing performance of the MPP pipe.
[0005] In view of this, the present invention provides an MPP pipe with good sealing performance, comprising a pipe body, one end of the pipe body being provided with a socket end, the inner wall of the socket end being provided with an inner positioning ring, the outer wall of the socket end being fitted with an inner sealing ring, the end of the pipe body away from the socket end being provided with a socket opening, the inside of the socket opening being provided with an outer positioning ring, the inner wall of the socket opening being provided with an outer sealing ring, the outside of the socket opening being fitted with a protective gasket, and the outer wall of the protective gasket being fitted with a clamp.
[0006] Based on the above structure, the workers insert the socket end of the pipe into the socket of another set of pipes. The inner sealing ring on the outer wall of the socket end fits tightly with the outer sealing ring on the inner wall of the socket. Then, the workers use clamps to tightly fit the socket and the socket end together to prevent the connection of the pipe from falling off, thus achieving the sealing operation of the pipe.
[0007] Preferably, the diameter of the socket end is smaller than the diameter of the socket opening. In this embodiment, it is convenient for workers to insert the socket end of the pipe into the socket opening of another set of pipes.
[0008] Preferably, the central axes of the inner positioning ring and the outer positioning ring coincide. In this embodiment, deformation of the socket end and socket of the pipe body is avoided.
[0009] Preferably, the cross-sections of both the inner and outer sealing rings are trapezoidal, and the connection portion of the inner and outer sealing rings is inclined. In this embodiment, this is beneficial to increase the contact area between the inner and outer sealing rings and improve the sealing performance of the pipe connection.
[0010] Preferably, the contact surfaces of the inner sealing ring and the socket end, as well as the contact surfaces of the outer sealing ring and the socket, are provided with anti-slip textures. In this embodiment, this prevents the inner and outer sealing rings from slipping off.
[0011] Preferably, the socket is sealed to the socket end by means of an inner sealing ring and an outer sealing ring. In this embodiment, it is convenient for the inner sealing ring on the outer wall of the socket end to fit tightly with the outer sealing ring on the inner wall of the socket.
[0012] Preferably, two sets of clamps are provided. In this embodiment, the worker uses the clamps to tightly fit the socket and the socket end together, preventing the connection part of the pipe from falling off.
[0013] The beneficial effects of this utility model are: This MPP pipe, which facilitates sealing, is equipped with an inner and outer sealing ring. The worker inserts the socket end of the pipe into the socket of another set of pipes. The inner sealing ring on the outer wall of the socket end fits tightly with the outer sealing ring on the inner wall of the socket. Then, the worker uses clamps to tightly fit the socket and the socket end together, preventing the connection of the pipe from falling off and achieving the sealing operation of the pipe. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the pipe body installation structure of this utility model; Figure 4 This is a cross-sectional view of the tube connection structure of this utility model.
[0015] The markings in the diagram are as follows: 1. Pipe body; 2. Socket end; 3. Inner positioning ring; 4. Inner sealing ring; 5. Socket; 6. Outer positioning ring; 7. Outer sealing ring; 8. Protective gasket; 9. Clamp. Detailed Implementation
[0016] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be described in further detail.
[0017] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0018] This application discloses an MPP pipe with good sealing performance, including a pipe body 1, a socket end 2 at one end of the pipe body 1, an inner positioning ring 3 on the inner wall of the socket end 2, an inner sealing ring 4 on the outer wall of the socket end 2, a socket opening 5 at the end of the pipe body 1 away from the socket end 2, an outer positioning ring 6 inside the socket opening 5, an outer sealing ring 7 on the inner wall of the socket opening 5, a protective washer 8 on the outside of the socket opening 5, and a clamp 9 on the outer wall of the protective washer 8.
[0019] Based on the above structure, the workers insert the socket end 2 of the pipe body 1 into the socket port 5 of another set of pipe bodies 1. The inner sealing ring 4 on the outer wall of the socket end 2 is tightly fitted with the outer sealing ring 7 on the inner wall of the socket port 5. Then, the workers use the clamp 9 to tightly fit the socket port 5 and the socket end 2 to prevent the connection part of the pipe body 1 from falling off, thus achieving the sealing operation of the pipe body 1.
[0020] In one embodiment, the diameter of the socket end 2 is smaller than the diameter of the socket opening 5.
[0021] In this embodiment, it is convenient for workers to insert the socket end 2 of the pipe body 1 into the socket 5 of another set of pipe bodies 1.
[0022] In one embodiment, the central axes of the inner positioning ring 3 and the outer positioning ring 6 coincide.
[0023] In this embodiment, deformation of the socket end 2 and socket 5 of the pipe body 1 is avoided.
[0024] In one embodiment, the cross-sections of both the inner sealing ring 4 and the outer sealing ring 7 are trapezoidal, and the connection between the inner sealing ring 4 and the outer sealing ring 7 is inclined.
[0025] In this embodiment, it is beneficial to increase the contact area between the inner sealing ring 4 and the outer sealing ring 7, thereby improving the sealing performance of the pipe body 1 connection.
[0026] In one embodiment, the contact surfaces of the inner sealing ring 4 and the socket end 2, as well as the contact surfaces of the outer sealing ring 7 and the socket 5, are provided with anti-slip textures.
[0027] In this embodiment, the inner sealing ring 4 and the outer sealing ring 7 are prevented from slipping off.
[0028] In one embodiment, the socket 5 forms a sealing structure with the socket end 2 through the inner sealing ring 4 and the outer sealing ring 7.
[0029] In this embodiment, the inner sealing ring 4 on the outer wall of the socket end 2 is made to fit tightly with the outer sealing ring 7 on the inner wall of the socket 5.
[0030] In one embodiment, the clamp 9 is provided in two sets.
[0031] In this embodiment, the workers use clamps 9 to tightly fit the socket 5 and the socket end 2 to prevent the connection of the pipe body 1 from falling off.
[0032] In this embodiment, when using the MPP pipe with good sealing performance, firstly, the worker inserts the socket end 2 of the pipe body 1 into the socket 5 of another set of pipe bodies 1. The inner sealing ring 4 on the outer wall of the socket end 2 is tightly fitted with the outer sealing ring 7 on the inner wall of the socket 5. Then, the worker uses the clamp 9 to tightly fit the socket 5 and the socket end 2 to prevent the connection part of the pipe body 1 from falling off, thus achieving the sealing operation of the pipe body 1.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A MPP pipe with good sealing convenience, characterized in that, The device includes a pipe body (1), one end of which is provided with a socket end (2), the inner wall of which is provided with an inner positioning ring (3), the outer wall of which is fitted with an inner sealing ring (4), the end of which is away from the socket end (2) is provided with a socket opening (5), the inside of which is provided with an outer positioning ring (6), the inner wall of which is provided with an outer sealing ring (7), the outside of which is fitted with a protective gasket (8), and the outer wall of which is fitted with a clamp (9).
2. The MPP pipe with good sealing convenience according to claim 1, characterized in that: The diameter of the socket end (2) is smaller than the diameter of the socket opening (5).
3. The MPP pipe with good sealing convenience according to claim 1, characterized in that: The central axes of the inner positioning ring (3) and the outer positioning ring (6) coincide.
4. The MPP pipe with good sealing convenience according to claim 1, characterized in that: The cross-sections of the inner sealing ring (4) and the outer sealing ring (7) are both trapezoidal, and the connection between the inner sealing ring (4) and the outer sealing ring (7) is inclined.
5. The MPP pipe with good sealing convenience according to claim 1, characterized in that: The contact surfaces of the inner sealing ring (4) and the socket end (2), as well as the contact surfaces of the outer sealing ring (7) and the socket (5), are all provided with anti-slip textures.
6. The MPP pipe with good sealing convenience according to claim 1, characterized in that: The socket (5) forms a sealing structure with the socket end (2) through the inner sealing ring (4) and the outer sealing ring (7).
7. The MPP pipe with good sealing performance according to claim 1, characterized in that: The clamp (9) is provided in two sets.