MPP cable protection pipe convenient to assemble

Abstract

The utility model relates to the technical field of cable protection pipes, and particularly discloses an MPP cable protection pipe convenient to assemble, which comprises a protection pipe body, the protection pipe body is formed by combining an upper half pipe and a lower half pipe, an L-shaped clamping groove is formed in the top of the protection pipe body at the bottom, an L-shaped clamping block is arranged in an inner cavity of the L-shaped clamping groove, and the L-shaped clamping block is arranged in the inner cavity of the L-shaped clamping groove. An inner connecting cylinder is arranged on one side of the interior of the protection pipe body, two sets of connecting grooves are formed in the outer ring of the inner connecting cylinder, an outer connecting cylinder is arranged on the outer ring of the protection pipe body, and when the protection pipe body is overhauled or replaced, the connecting outer cylinder is detached through a connecting mechanism; when the cable protection pipe is used, the protection pipe body at the upper part is moved to align the protection pipe body at the lower part, at the moment, the L-shaped clamping blocks can be separated from the constraint of the L-shaped clamping grooves, the protection pipe bodies can be separated, subsequent replacement and cable maintenance are facilitated, and the problem that an existing cable protection pipe is difficult to assemble, disassemble and replace quickly is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection tubes, in particular to an MPP cable protection tube which is easy to assemble. Background Art

[0002] Cable is a special kind of conductor. Cable is usually a rope-like cable made of several or several groups of conductors (at least two in each group). Each group of conductors is insulated from each other and often twisted around a center. MPP pipe is also called MPP power cable protection pipe, which is divided into excavation type and non-excavation type. MPP non-excavation pipe is also called MPP jacking pipe or dragging 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 transmission line cable pipes below 10KV.

[0003] The patent with publication number CN 219535510 U discloses an MPP power cable protection pipe that is easy to assemble, which includes a pipe body; it is characterized in that it also includes a connector installed on the pipe body; the pipe body is divided into two half-pipes, one side of the half-pipe is provided with a connection groove, and the other side is provided with a connection block adapted to the connection groove. The device can remove one of the half-pipes for maintenance, and when replacing, it only needs to remove the two half-pipes in turn and then install the new two half-pipes in turn, without pulling the cable out of the entire pipeline or disconnecting the cable in the conductive pipe body, thereby improving the replacement efficiency. The device has a high efficiency and does not require power-off processing. However, the device uses a reinforcing sleeve to reinforce the connection between the connecting groove and the connecting block, and then uses a semicircular sleeve in conjunction with bolts to reinforce the connection of the protective tube. However, when the half-tube body needs to be disassembled, the semicircular sleeve needs to be disassembled with bolts first. Then, due to the presence of the clamping teeth and clamping strips, the reinforcing sleeve needs to be pulled out along the direction of the protective tube to separate and disassemble the half-tube body. The process is cumbersome and troublesome, which reduces the efficiency of assembly, disassembly and maintenance. Therefore, an MPP cable protection tube that is easy to assemble is proposed to solve the problem that the existing cable protection tube is difficult to assemble and disassemble quickly. Utility Model Content

[0004] (I) Technical problems to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides an MPP cable protection tube that is easy to assemble, thereby solving the technical problem that the prior cable protection tubes are difficult to quickly assemble, disassemble and replace.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] An MPP cable protection tube that is easy to assemble, comprising a protection tube body, the protection tube body is composed of two upper and lower half tubes, the top of the bottom protection tube body is provided with an L-shaped card slot, the inner cavity of the L-shaped card slot is provided with an L-shaped card block, an inner side of the protection tube body is provided with an inner connecting tube, the outer ring of the inner connecting tube is provided with two groups of connecting grooves, the outer ring of the protection tube body is provided with an outer connecting tube, the outer connecting tube is composed of two upper and lower half tubes, and the upper and lower outer connecting tubes are connected by a connecting mechanism;

[0009] Among them, the L-shaped block is fixedly connected to the upper half of the protection tube body, the outer diameter of the connecting groove is slightly smaller than the inner diameter of the protection tube body, the outer diameter of the connecting groove is the same as the outer diameter of the protection tube body, and the inner diameter of the external connecting tube is the same as the outer diameter of the protection tube body.

[0010] Preferably: the connecting mechanism is composed of a groove, a connecting block and a connecting bolt;

[0011] The groove is provided on the outer ring of the outer connecting tube which is spliced ​​at the top and the bottom, and the inner cavity of the groove is provided with a connecting block.

[0012] Preferably: the shape and size of the groove of the outer ring of the upper and lower spliced ​​outer connecting tube are the same as those of the connecting block;

[0013] Wherein, the outer connecting tubes spliced ​​up and down are connected by connecting blocks and connecting bolts.

[0014] Preferably: a sealing groove is provided at the top of the bottom protective tube body, and a sealing gasket is provided in the inner cavity of the sealing groove;

[0015] Wherein, the sealing gasket is fixedly connected to the bottom of the protection tube body at the top.

[0016] Preferably: the inner cavity of the connecting groove is provided with a plurality of extrusion springs and arc-shaped plates;

[0017] Wherein, one end of the extrusion spring is fixedly connected to the connecting groove, and the other end is fixedly connected to the arc plate.

[0018] Preferably: the outer ring of the outer connecting tube is provided with a plurality of positioning grooves, and the inner cavity of the positioning groove is provided with a positioning block;

[0019] Wherein, the positioning block is fixed at the middle part of the outer ring of the protection tube body.

[0020] (III) Beneficial effects

[0021] 1. When inspecting or replacing the protective tube body, the connecting outer tube is disassembled by using the connecting mechanism, and the upper part of the protective tube body is moved to align with the lower part of the protective tube body. At this time, the L-shaped clamping block can be freed from the constraint of the L-shaped clamping groove, and the protective tube body can be separated, which is convenient for subsequent replacement and cable inspection, and solves the problem that the existing cable protection tube is difficult to quickly assemble, disassemble and replace.

[0022] 2. When the inner connecting tube is used to connect the protection tube body, the arc plate and the extrusion spring at the top will exert a leftward force on the upper part of the protection tube body, so that the upper and lower protection tube bodies are always kept in a staggered state, ensuring the stability of the protection tube body when spliced, and facilitating subsequent pipeline connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0024] Figure 1 This is the structural diagram of the utility model;

[0025] Figure 2 This is a cross-sectional view of the structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the inner and outer connecting tubes of the utility model structure;

[0027] Figure 4 It is a cross-sectional view of the structure of the utility model.

[0028] Legend: 1. Protective tube body; 2. L-shaped slot; 3. L-shaped block; 4. Inner connecting tube; 5. Connecting slot; 6. Outer connecting tube; 7. Connecting mechanism; 71. Groove; 72. Connecting block; 73. Connecting bolt; 8. Sealing groove; 9. Sealing gasket; 10. Extrusion spring; 11. Arc plate; 12. Positioning slot; 13. Positioning block. DETAILED DESCRIPTION

[0029] The embodiment of the present application effectively solves the problem that the existing cable protection tube is difficult to assemble, disassemble and replace quickly by providing an MPP cable protection tube that is easy to assemble. When inspecting or replacing the protection tube body, the connecting outer tube is removed by using a connecting mechanism, and the upper part of the protection tube body is moved to align it with the lower part of the protection tube body. At this time, the L-shaped clamping block can be freed from the constraint of the L-shaped clamping groove, and the protection tube body can be separated, which is convenient for subsequent replacement and cable inspection.

[0030] Example

[0031] The technical solution in the embodiment of the present application effectively solves the technical problem that the existing cable protection tube is difficult to quickly assemble, disassemble and replace. The overall idea is as follows:

[0032] In view of the problems existing in the prior art, the utility model provides an MPP cable protection tube that is easy to assemble, including a protection tube body 1, which is composed of an upper and lower half tube. An L-shaped card slot 2 is provided on the top of the bottom protection tube body 1, and an L-shaped card block 3 is provided in the inner cavity of the L-shaped card slot 2. An inner connecting tube 4 is provided on one side of the inner part of the protection tube body 1, and two groups of connecting grooves 5 are provided on the outer ring of the inner connecting tube 4. An outer connecting tube 6 is provided on the outer ring of the protection tube body 1, and the outer connecting tube 6 is composed of an upper and lower half tube. The upper and lower outer connecting tubes 6 are connected by a connecting mechanism 7. When inspecting or replacing the protection tube body 1, the connecting outer tube 6 is disassembled by using the connecting mechanism 7, and the upper part of the protection tube body 1 is moved to align with the lower part of the protection tube body 1. At this time, the L-shaped card block 3 can be freed from the restraint of the L-shaped card slot 2, and the protection tube body 1 can be separated, which is convenient for subsequent replacement and cable inspection, and solves the problem that the existing cable protection tubes are difficult to assemble, disassemble and replace quickly.

[0033] Among them, the L-shaped block 3 is fixedly connected to the upper half of the protective tube body 1, the outer diameter of the connecting groove 5 is slightly smaller than the inner diameter of the protective tube body 1, the outer diameter of the connecting groove 5 is the same as the outer diameter of the protective tube body 1, and the inner diameter of the external connecting tube 6 is the same as the outer diameter of the protective tube body 1.

[0034] The connecting mechanism 7 consists of a groove 71, a connecting block 72 and a connecting bolt 73; wherein, the groove 71 is opened on the outer ring of the upper and lower spliced ​​external connecting tube 6, and the inner cavity of the groove 71 is provided with a connecting block 72; the shape and size of the groove 71 of the outer ring of the upper and lower spliced ​​external connecting tube 6 are the same as the connecting block 72; wherein, the upper and lower spliced ​​external connecting tube 6 is connected by means of a connecting block 72 and a connecting bolt 73, and the external connecting tube 6 is connected together by means of the connecting block 72 in the groove 71 and the connecting bolt 73, so that the outer ring of the protective tube body 1 is squeezed and connected, thereby improving the stability of the cable protective tube after connection.

[0035] A sealing groove 8 is provided at the top of the bottom protection tube body 1, and a sealing gasket 9 is provided in the inner cavity of the sealing groove 8; wherein the sealing gasket 9 is fixedly connected to the bottom of the top protection tube body 1, and the sealing gasket 9 in the sealing groove 8 is utilized to improve the internal sealing when the upper and lower protection tube bodies 1 are spliced ​​together, thereby preventing dust and water vapor from entering the interior and causing damage to the cable.

[0036] The inner cavity of the connecting groove 5 is provided with a plurality of extrusion springs 10 and arc plates 11; wherein, one end of the extrusion spring 10 is fixedly connected to the connecting groove 5, and the other end is fixedly connected to the arc plate 11. When the protection tube body 1 is connected by using the inner connecting tube 4, the arc plate 11 and the extrusion spring 10 at the top will exert a leftward force on the upper part of the protection tube body 1, so that the upper and lower protection tube bodies 1 are always kept in a staggered state, ensuring the stability of the protection isolated tube body 1 when spliced, and facilitating the subsequent pipeline connection.

[0037] The outer ring of the external connection tube 6 is provided with a plurality of positioning grooves 12, and the inner cavity of the positioning grooves 12 is provided with positioning blocks 13; wherein, the positioning blocks 13 are fixed in the middle of the outer ring of the protective tube body 1, and the positioning grooves 12 on the external connection tube 6 and the positioning blocks 13 on the protective tube body 1 are utilized to ensure that half of the external connection tube 6 can be aligned with half of the protective tube body 1, so as to facilitate the subsequent disassembly of the external connection tube 6 to disassemble, replace and overhaul the protective tube body 1.

[0038] Working principle: When it is necessary to use this easy-to-assemble MPP power cable protection tube, put the L-shaped block 3 into the L-shaped slot 2, then dislocate the protection tube body 1, and then use the connection groove 5 to put the inner connecting tube 4 into the protection tube body 1, and then use the connecting mechanism 7 to fix the outer connecting tube 6 to the outer ring of the protection tube body 1 to complete the assembly of the MPP cable protection tube. The same method can be used to connect another group of protection tube bodies 1 to the previous group by the inner connecting tube 4 and the outer connecting tube 6; when it is necessary to inspect the cable in the protection tube body 1 or replace the protection tube body 1, use the connecting mechanism 7 to remove the connecting outer tube 6, move the upper part of the protection tube body 1 to align it with the lower part of the protection tube body 1, and at this time the L-shaped block 3 can be freed from the constraint of the L-shaped slot 2, and the protection tube body 1 can be separated, which is convenient for subsequent replacement and cable inspection, and solves the problem that the existing cable protection tubes are difficult to assemble, disassemble and replace quickly.

[0039] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. An MPP cable protection tube that is easy to assemble, comprising a protection tube body (1), It is characterized in that The protection tube body (1) is composed of two upper and lower half tubes, the top of the bottom of the protection tube body (1) is provided with an L-shaped card slot (2), the inner cavity of the L-shaped card slot (2) is provided with an L-shaped card block (3), an inner side of the protection tube body (1) is provided with an inner connecting tube (4), the outer ring of the inner connecting tube (4) is provided with two groups of connecting grooves (5), the outer ring of the protection tube body (1) is provided with an outer connecting tube (6), the outer connecting tube (6) is composed of two upper and lower half tubes, and the upper and lower outer connecting tubes (6) are connected by a connecting mechanism (7); The L-shaped clamping block (3) is fixedly connected to the upper half of the protection tube body (1), the outer diameter of the connecting groove (5) is slightly smaller than the inner diameter of the protection tube body (1), the outer diameter of the connecting groove (5) is the same as the outer diameter of the protection tube body (1), and the inner diameter of the external connecting tube (6) is the same as the outer diameter of the protection tube body (1).

2. An MPP cable protection tube that is easy to assemble as claimed in claim 1, It is characterized in that The connecting mechanism (7) is composed of a groove (71), a connecting block (72) and a connecting bolt (73); The groove (71) is provided on the outer ring of the upper and lower spliced ​​outer connecting tube (6), and the inner cavity of the groove (71) is provided with a connecting block (72).

3. An MPP cable protection tube that is easy to assemble as claimed in claim 1, It is characterized in that The shape and size of the groove (71) on the outer ring of the upper and lower spliced ​​outer connecting tube (6) are the same as those of the connecting block (72); The upper and lower connected external connection tubes (6) are connected by connecting blocks (72) and connecting bolts (73).

4. The MPP cable protection tube that is easy to assemble as claimed in claim 1, It is characterized in that A sealing groove (8) is provided at the top of the bottom protection tube body (1), and a sealing gasket (9) is provided in the inner cavity of the sealing groove (8); Wherein, the sealing gasket (9) is fixedly connected to the bottom of the protection tube body (1) at the top.

5. The MPP cable protection tube that is easy to assemble as claimed in claim 1, It is characterized in that The inner cavity of the connecting groove (5) is provided with a plurality of extrusion springs (10) and arc-shaped plates (11); One end of the extrusion spring (10) is fixedly connected to the connection groove (5), and the other end is fixedly connected to the arc plate (11).

6. The MPP cable protection tube that is easy to assemble as claimed in claim 1, It is characterized in that The outer ring of the external connection tube (6) is provided with a plurality of positioning grooves (12), and the inner cavity of the positioning groove (12) is provided with a positioning block (13); Wherein, the positioning block (13) is fixed at the middle part of the outer ring of the protection tube body (1).

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