Compression-resistant MPP electric power tube

Abstract

The utility model discloses a pressure-resistant MPP electric power pipe, which comprises an inner pipeline and a buffer pressure-resistant outer pipe, the buffer pressure-resistant outer pipe is sleeved on the outer wall of the inner pipeline, the buffer pressure-resistant outer pipe comprises a connecting pipe and a protective pipe, the connecting pipe is slidably connected on the outer wall of the inner pipeline, a buffer cavity is formed between the protective pipe and the outer wall of the connecting pipe, and the protective pipe is sleeved on the buffer cavity. A plurality of evenly-distributed arc-shaped buffer plates and buffer pipes are fixedly connected into the buffer cavity, the arc-shaped buffer plates are arranged at equal intervals and fixedly connected with the outer wall of the connecting pipe, the outer surfaces of the arc-shaped ends of the arc-shaped buffer plates abut against the inner wall of the protective pipe, and the buffer pipes are arranged between every two adjacent arc-shaped buffer plates. The buffer pipes are fixedly connected with the two adjacent arc-shaped buffer plates and abut against the inner wall of the protection pipe. The arc-shaped buffer plates and the buffer pipes which are uniformly distributed are arranged in the buffer cavity, so that external pressure borne by the protective pipe can be effectively absorbed and dispersed, and deformation and fracture caused by the fact that the local part of the inner pipeline suffers from the external pressure are reduced.

Description

Technical Field

[0001] This utility model relates to the field of power pipe technology, and in particular to a pressure-resistant MPP power pipe. Background Technology

[0002] MPP power conduit, also known as MPP power cable protection conduit, is divided into open-cut and trenchless types. Trenchless MPP conduit is also called MPP jacking pipe or pull-up pipe. MPP pipe uses modified polypropylene as the main raw material, which has the characteristics of high temperature resistance and external pressure resistance, and is suitable for high voltage power transmission cable ducts below 10KV.

[0003] The existing MPP power pipe has a relatively simple structure. In actual use, when MPP power pipes are buried in concrete or underground, they are prone to deformation and cracking when subjected to pressure. This may directly damage the internal wires and cables, leading to power transmission interruption and affecting power supply reliability.

[0004] The existing utility model patent (publication number CN217902756U) discloses a high-pressure-resistant MPP power pipe. This high-pressure-resistant MPP power pipe is equipped with auxiliary support plates and pressure-resistant contact blocks. By equidistantly connecting multiple auxiliary support plates and connecting pressure-resistant contact blocks on the side of the limiting center column, a certain support effect is provided for the interior of the pipe, thereby improving the overall pressure resistance of the pipe. At the same time, in conjunction with the internal buffer pressure-resistant layer and the setting of its internal foam balls, the overall pressure-resistant buffering capacity is improved, the overall protection effect is improved, and the service life is extended.

[0005] While the aforementioned patent can solve the problem of MPP power conduits being easily deformed and broken by compression, thereby improving the overall pressure resistance of the conduit, the limiting center column, auxiliary support plate, and pressure-resistant contact block installed inside the inner conduit reduce the space for wire threading. Consequently, compared with MPP power conduits of the same size, this MPP power conduit interferes with the wire threading process, reduces threading efficiency, and may even make it difficult to pass larger diameter wires through it, thus reducing its applicability and hindering its widespread application.

[0006] Therefore, it is necessary to develop a pressure-resistant MPP power pipe to address the aforementioned defects. Utility Model Content

[0007] The purpose of this invention is to provide a pressure-resistant MPP power conduit that can improve the pressure resistance of the power conduit, prevent the power conduit from being deformed and cracked by compression, and at the same time not affect the wiring of the power conduit.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] This utility model discloses a pressure-resistant MPP power conduit, comprising an inner conduit and a buffer pressure-resistant outer conduit. The buffer pressure-resistant outer conduit is sleeved on the outer wall of the inner conduit and includes a connecting pipe and a protective pipe. The connecting pipe is slidably connected to the outer wall of the inner conduit. The protective pipe is located outside the connecting pipe and forms a buffer cavity between itself and the outer wall of the connecting pipe. Several evenly distributed arc-shaped buffer plates and buffer pipes are fixedly connected within the buffer cavity. The arc-shaped buffer plates are equally spaced and one end is fixedly connected to the outer wall of the connecting pipe. The outer surface of the arc-shaped end of the arc-shaped buffer plates abuts against the inner wall of the protective pipe. Each buffer pipe is disposed between two adjacent arc-shaped buffer plates and is fixedly connected to two adjacent arc-shaped buffer plates and abuts against the inner wall of the protective pipe.

[0010] Furthermore, the arc-shaped buffer plate, the buffer tube, and the connecting tube are all made of rubber, while the inner pipe and the protective pipe are both made of MPP material.

[0011] Furthermore, the arc-shaped buffer plate, the buffer tube, and the connecting tube are integrally formed.

[0012] Furthermore, a number of retaining strips are fixedly connected to the outer wall of the inner pipe, each retaining strip being arranged along the length of the inner pipe, and the inner pipe and the retaining strips are integrally formed; a number of slots adapted to the retaining strips are opened on the inner wall of the connecting pipe, and the connecting pipe and the inner pipe are connected by inserting the retaining strips into the slots.

[0013] Furthermore, a lubricating layer is provided on the inner wall of the inner pipe, and the lubricating layer is uniformly coated on the inner wall of the inner pipe with a lubricating coating.

[0014] Furthermore, a plurality of reinforcing strips are provided on the outer wall of the protective tube, each reinforcing strip being provided along the length direction of the protective tube, and the reinforcing strips being integrally formed with the protective tube.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This utility model of a pressure-resistant MPP power conduit mainly consists of an inner pipe and a buffer pressure-resistant outer pipe. The buffer pressure-resistant outer pipe is sleeved on the outer wall of the inner pipe, forming a protective layer. The buffer pressure-resistant outer pipe includes a connecting pipe and a protective pipe, with a buffer cavity formed between them. By setting multiple evenly distributed arc-shaped buffer plates and buffer pipes in the buffer cavity, the external pressure on the protective pipe can be effectively absorbed and dispersed, thereby reducing the deformation and rupture of the inner pipe due to localized external pressure.

[0017] Furthermore, the integrally formed retaining strip on the outer wall of the inner conduit and the retaining groove on the inner wall of the connecting pipe ensure a secure connection between the connecting pipe and the inner conduit, preventing the connecting pipe from rotating on the inner conduit. Reinforcing strips on the protective pipe effectively enhance the strength and compressive strength of the anti-slip pipe. Applying a slip-enhancing coating to the inner wall of the inner conduit forms a lubricating layer, improving the sliding performance of the inner wall, reducing friction between the cable and the inner wall during cable threading, and minimizing cable wear. It also improves the wear resistance of the inner wall of the inner conduit. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a three-dimensional structural diagram of the pressure-resistant MPP power pipe of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the inner pipe of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the buffer and pressure-resistant outer tube of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Inner pipe; 2. Buffer and pressure-resistant outer pipe; 201. Connecting pipe; 202. Protective pipe; 203. Buffer cavity; 204. Arc-shaped buffer plate; 205. Buffer pipe; 3. Clip; 4. Slot; 5. Lubricating layer; 6. Reinforcing strip. Detailed Implementation

[0023] The core of this invention is to provide a pressure-resistant MPP power pipe that can improve the pressure resistance of the power pipe, prevent the power pipe from being deformed and broken by compression, and at the same time, it does not affect the wiring of the power pipe.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In one specific implementation, such as Figures 1-3 As shown, it includes an inner pipe 1 and a buffer pressure-resistant outer pipe 2. The buffer pressure-resistant outer pipe 2 is sleeved on the outer wall of the inner pipe 1. The buffer pressure-resistant outer pipe 2 includes a connecting pipe 201 and a protective pipe 202. The connecting pipe 201 is slidably connected to the outer wall of the inner pipe 1. The protective pipe 202 is located outside the connecting pipe 201 and forms a buffer cavity 203 between it and the outer wall of the connecting pipe 201. Several evenly distributed arc-shaped buffer plates 204 and buffer pipes 205 are fixedly connected in the buffer cavity 203. The several arc-shaped buffer plates 204 are equally spaced and one end is fixedly connected to the outer wall of the connecting pipe 201. The outer surface of the arc-shaped end of the several arc-shaped buffer plates 204 abuts against the inner wall of the protective pipe 202. Each buffer pipe 205 is disposed between two adjacent arc-shaped buffer plates 204. The buffer pipe 205 is fixedly connected to two adjacent arc-shaped buffer plates 204 and abuts against the inner wall of the protective pipe 202.

[0027] In one specific embodiment, the arc-shaped buffer plate 204, the buffer tube 205, and the connecting tube 201 are all made of rubber, while the inner tube 1 and the protective tube 202 are both made of MPP material. The use of rubber material for the arc-shaped buffer plate 204 and the buffer tube 205 enables them to have good elasticity and shock absorption capacity, thereby dispersing and buffering the compressive force on the protective tube 202.

[0028] Specifically, the arc-shaped buffer plate 204, the buffer tube 205, and the connecting tube 201 are integrally formed.

[0029] In one specific embodiment, a plurality of clips 3 are fixedly connected to the outer wall of the inner pipe 1, each clip 3 being arranged along the length of the inner pipe 1, and the inner pipe 1 and the clips 3 being integrally formed; a plurality of slots 4 adapted to the clips 3 are provided on the inner wall of the connecting pipe 201, and the connecting pipe 201 and the inner pipe 1 are connected by inserting the clips 3 into the slots 4.

[0030] By setting the clip 3 and the slot 4, the connection between the connecting pipe 201 and the inner pipe 1 can be strengthened, and the connecting pipe 201 can be prevented from rotating on the outer wall of the inner pipe 1. In addition, the clip 3 is integrally formed with the inner pipe 1, which can improve the strength and pressure resistance of the inner pipe 1 to a certain extent.

[0031] In one specific embodiment, a lubrication layer 5 is provided on the inner wall of the inner pipe 1. The lubrication layer 5 is uniformly coated on the inner wall of the inner pipe 1 with a lubricating coating.

[0032] By applying a slip-enhancing coating to the inner wall of the inner conduit 1, which contains aliphatic hydrocarbons, fatty acid amides, or organosilicon slip agents, the sliding performance of the inner wall of the inner conduit 1 can be improved, reducing the friction between the cable and the inner wall of the inner conduit 1 during cable threading and thus reducing cable wear. Simultaneously, it can also improve the wear resistance of the inner wall of the inner conduit 1.

[0033] In one specific embodiment, a plurality of reinforcing strips 6 are provided on the outer wall of the protective tube 202, each reinforcing strip 6 being provided along the length direction of the protective tube 202, and the reinforcing strip 6 being integrally formed with the protective tube 202.

[0034] By setting several reinforcing strips 6 on the outer wall of the protective pipe 202, the strength and compressive strength of the protective pipe 202 can be effectively improved.

[0035] The working principle of this utility model is as follows: When the pressure-resistant MPP power pipe of this utility model is used, the buffer pressure-resistant outer pipe 2 can protect the inner pipe 1. When the power pipe is squeezed by external pressure, the protective pipe 202 will directly or indirectly squeeze the arc-shaped buffer plate 204 and the buffer pipe 205. The rubber arc-shaped buffer plate 204 and the buffer pipe 205 will undergo elastic deformation after being squeezed, dispersing the pressure throughout the buffer cavity 203, reducing the direct squeezing impact on the inner pipe 1. This can prevent the inner pipe 1 from being squeezed, deformed, or broken. The locking strip 3 integrally formed on the outer wall of the inner pipe 1 and the locking groove 4 opened on the inner wall of the connecting pipe 201 achieve a stable connection between the connecting pipe 201 and the inner pipe 1, preventing the connecting pipe 201 from rotating on the inner pipe 1. By setting the reinforcing strip 6 on the protective pipe 202, the strength and pressure resistance of the protective pipe 202 can be effectively improved. By applying a lubricating coating to the inner wall of the inner conduit 1 to form a lubrication layer 5, the sliding performance of the inner wall of the inner conduit 1 can be improved, reducing the friction between the cable and the inner wall of the inner conduit 1 during the cable threading process, and reducing cable wear. At the same time, it can also improve the wear resistance of the inner wall of the inner conduit 1.

[0036] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0037] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A pressure-resistant MPP power conduit, comprising an inner conduit (1) and a buffer pressure-resistant outer conduit (2), characterized in that: The buffer pressure-resistant outer tube (2) is sleeved on the outer wall of the inner pipe (1). The buffer pressure-resistant outer tube (2) includes a connecting pipe (201) and a protective pipe (202). The connecting pipe (201) is slidably connected to the outer wall of the inner pipe (1). The protective pipe (202) is located outside the connecting pipe (201) and forms a buffer cavity (203) between it and the outer wall of the connecting pipe (201). Several evenly distributed arc-shaped buffer plates (204) and buffer tubes (205) are fixedly connected inside the buffer cavity (203). If Several arc-shaped buffer plates (204) are evenly spaced along the circumference of the connecting pipe (201) and one end is fixedly connected to the outer wall of the connecting pipe (201). The outer surface of the arc-shaped end of several arc-shaped buffer plates (204) is in contact with the inner wall of the protective pipe (202). Each buffer pipe (205) is disposed between two adjacent arc-shaped buffer plates (204). The buffer pipe (205) is fixedly connected to two adjacent arc-shaped buffer plates (204) and in contact with the inner wall of the protective pipe (202).

2. The pressure-resistant MPP power pipe according to claim 1, characterized in that: The arc-shaped buffer plate (204), the buffer tube (205) and the connecting tube (201) are all made of rubber, and the inner pipe (1) and the protective tube (202) are both made of MPP material.

3. The pressure-resistant MPP power pipe according to claim 2, characterized in that: The arc-shaped buffer plate (204), the buffer tube (205), and the connecting tube (201) are integrally formed.

4. The pressure-resistant MPP power pipe according to claim 1, characterized in that: Several clips (3) are fixedly connected to the outer wall of the inner pipe (1). Each clip (3) is arranged along the length of the inner pipe (1). The inner pipe (1) and the clip (3) are integrally formed. Several slots (4) that are adapted to the clips (3) are opened on the inner wall of the connecting pipe (201). The connecting pipe (201) and the inner pipe (1) are connected by inserting the clips (3) into the slots (4).

5. The pressure-resistant MPP power pipe according to claim 1, characterized in that: The inner wall of the inner pipe (1) is provided with a lubricating layer (5), which is uniformly coated with a lubricating coating.

6. The pressure-resistant MPP power pipe according to claim 1, characterized in that: The outer wall of the protective tube (202) is provided with a number of reinforcing strips (6), each reinforcing strip (6) is provided along the length direction of the protective tube (202), and the reinforcing strip (6) is integrally formed with the protective tube (202).

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