CN216530305U

CN216530305U - MPP cable protection pipe with expansion locking function

Info

Publication number: CN216530305U
Application number: CN202122527167.1U
Authority: CN
Inventors: 邱文良
Original assignee: Zhejiang Guangzhengxin Communication Material Co ltd
Current assignee: Zhejiang Guangzhengxin Communication Material Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-05-13
Anticipated expiration: 2031-10-20

Abstract

The utility model provides an MPP cable protection tube with an expansion locking function, which comprises a protection tube body, wherein a male joint is arranged at one end of the protection tube body, a guide-in ring is arranged at one end of the male joint, which is far away from the protection tube body, a gas valve is arranged on the guide-in ring, a first silica gel pad is arranged on the outer circumferential wall of the guide-in ring, an expansion ring is arranged on the first silica gel pad, a gas outlet end of the gas valve is communicated with the expansion ring, a female joint is arranged at the other end of the protection tube body, a second silica gel pad is arranged on the inner circumference of the female joint, and a clamping groove is formed in the inner wall side of the second silica gel pad.

Description

MPP cable protection pipe with expansion locking function

Technical Field

The utility model discloses an MPP cable protection pipe with an expansion locking function, and relates to the field of MPP power cable protection pipes.

Background

The MPP power pipe is divided into a common type and a reinforced type, the reinforced type is divided into an excavated pipe and a non-excavated pipe, and the MPP non-excavated pipe is also called as an MPP jacking pipe, an MPP supporting and pulling pipe and an MPP traction pipe and is also called as an MPP cable pipe and an MPP power cable protection pipe. The MPP power pipe is generally in butt joint by adopting a welding machine for thermal fusion welding, the welding point is about 200 ℃ and cannot exceed 220 ℃, and two ends can be in butt joint after the temperature is reached. (because the connection mode of the MPP pipe is thermal fusion welding, the welding port is not good, the cable wire can be damaged or the MPP pipe can be flattened, so the MPP power pipe needs to be made of a completely new material). The modified polypropylene (MPP) power pipe has the characteristics of high temperature resistance and external pressure resistance, is suitable for high-voltage transmission lines, cables, pipes and tubes with the voltage of more than 10KV, and achieves better social benefit and economic benefit through the detection of the national chemical building material test center.

Among the prior art, the mode of direct joint is generally adopted during MPP electric power pipe butt joint, and this kind of mode is relatively poor in the aspect of the leakproofness, and in outside steam permeates intraductally easily, the mode itself of direct joint just caused great not hard up easily moreover, and the risk that drops is great, consequently the problem that the aforesaid appears is solved to the MPP cable protection pipe of taking inflation locking function that urgently needs now.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the MPP cable protection tube with the expansion locking function so as to solve the problems in the background art.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a take MPP cable protection pipe of inflation locking function, includes the protection tube body, the one end of protection tube body is provided with the male joint, the one end that the male joint deviates from the protection tube body is provided with leading-in ring, be provided with the pneumatic valve on the leading-in ring, be provided with silica gel pad one on the outer circumferential wall of leading-in ring, silica gel pad one is last to be provided with the expansion ring, the end of giving vent to anger of pneumatic valve switches on with the expansion ring each other, the other end of protection tube body is provided with female joint, be provided with silica gel pad two in the female joint on the circumference, two inner walls sides of silica gel pad are opened and are equipped with the chucking recess.

Furthermore, the expansion rings are provided with at least two expansion rings, the expansion rings are matched with the clamping grooves, and the diameter of each expansion ring is smaller than the inner diameter of each clamping groove.

Furthermore, the air outlet end of the air valve is provided with an air guide pipe, the air valve is communicated with the expansion valve through the air guide pipe, the air valves are multiple, and each air valve is communicated with one expansion ring.

Furthermore, the materials of the first silica gel pad and the second silica gel pad are high-elasticity silica gel.

Further, the male joint is integrally connected with the protection tube body, and the female joint is integrally connected with the protection tube body.

Furthermore, a slot is formed in the inner wall side of the female joint, and the depth of the slot is the same as that of the lead-in ring.

The utility model has the beneficial effects that:

1. according to the utility model, the expansion ring is arranged at one end of the MPP power protection pipe, and is ventilated and expanded, and the expansion ring is connected with the other end of the MPP power protection pipe in a locking manner, so that good air sealing is realized;

2. the MPP power protection tube is characterized in that a silica gel pad I and a silica gel pad II are arranged at two ends of the MPP power protection tube, the silica gel pad I and the silica gel pad II are made of high-elasticity silica gel, and have good sealing performance and buffering effect, and the connection structure is flexible, so that slight movement between each tube section is allowed;

3. the MPP power protection structure is reasonable in structure, good in sealing performance, flexible in connection structure, capable of allowing each pipe joint to move slightly and good in buffering performance.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural diagram of an MPP cable protection tube with an expansion locking function according to the present invention;

fig. 2 is a front sectional view of an MPP cable protection tube with an expansion locking function according to the present invention;

FIG. 3 is an enlarged view of A in FIG. 2;

in the figure: the device comprises a protection tube body 1, a male connector 2, a leading-in ring 3, a silica gel pad I31, an expansion ring 32, an air valve 4, an air guide tube 41, a female connector 5, a silica gel pad II 51 and a clamping groove 52.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a take MPP cable protection pipe of inflation locking function, including protection tube body 1, the one end of protection tube body 1 is provided with male joint 2, the one end that male joint 2 deviates from protection tube body 1 is provided with leading-in ring 3, be provided with pneumatic valve 4 on the leading-in ring 3, be provided with silica gel pad 31 on the outer periphery of leading-in ring 3, be provided with expansion ring 32 on the silica gel pad 31, the end of giving vent to anger of pneumatic valve 4 switches on each other with expansion ring 32, the other end of protection tube body 1 is provided with female joint 5, be provided with silica gel pad two 51 in the circumference in female joint 5, the inboard side of silica gel pad two 51 is opened and is equipped with chucking recess 52, the leakproofness can't obtain good guarantee when having solved past MPP cable protection pipe butt joint, connect unstable problem.

The expansion ring 32 is provided with at least two expansion rings 32, the expansion rings 32 are matched with the clamping grooves 52, the diameter of each expansion ring 32 is smaller than the inner diameter of each clamping groove 52, and the expansion rings 32 are in locking connection with the clamping grooves 52 through ventilation and expansion of the expansion rings 32, so that good air sealing is realized.

The air outlet end of the air valve 4 is provided with an air guide pipe 41, the air valve 4 is communicated with the expansion ring 32 through the air guide pipe 41, a plurality of air valves 4 are arranged, each air valve 4 is communicated with one expansion ring 32, and air is injected into the expansion ring 32 through the air valve 4 to expand the expansion ring 32, so that the two connected protection pipe bodies 1 are locked.

The first silica gel pad 31 and the second silica gel pad 51 are both made of high-elasticity silica gel, have good sealing property and buffering effect, are flexible in connection structure, and allow each pipe joint to slightly move.

The male connector 2 and the female connector 5 are integrally connected with the protection tube body 1, and the protection tube body 1 is good in integrity, so that later-stage pipeline connection is more stable.

The inner wall side of the female joint 5 is provided with a slot, and the depth of the slot is the same as that of the lead-in ring 3, so that the expansion ring 32 and the clamping groove 52 are accurately spliced.

As an embodiment of the present invention: taking two protection tube bodies 1, inserting an introducing tube into the inner side of a female connector 5 to enable a male connector 2 and the female connector 5 to be mutually clamped and connected, then taking an air pump, aligning the air outlet end of the air pump with an air valve 4, injecting air into an expansion ring 32 through the air valve 4 to enable the expansion ring 32 to expand and clamp the expansion ring into a clamping groove 52, further locking the two connected protection tube bodies 1, and then butting a plurality of protection tube bodies 1 by the same operation;

when the protection tube bodies 1 which are butted together need to be separated, the gas valve 4 is opened to discharge the gas in the expansion ring 32, and finally the lead-in tube is directly pulled out, so that the male connector 2 and the female connector 5 on the protection tube bodies 1 are separated.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a take MPP cable protection pipe of inflation locking function, includes protection tube body (1), its characterized in that: the one end of protection tube body (1) is provided with male joint (2), the one end that deviates from protection tube body (1) in male joint (2) is provided with leading-in ring (3), be provided with pneumatic valve (4) on leading-in ring (3), be provided with silica gel pad (31) on leading-in ring (3) outer circumferential wall, be provided with expansion ring (32) on silica gel pad (31), the end of giving vent to anger of pneumatic valve (4) switches on each other with expansion ring (32), the other end of protection tube body (1) is provided with female joint (5), be provided with silica gel pad two (51) in female joint (5) on the circumference, silica gel pad two (51) inner wall side is opened and is equipped with chucking recess (52).

2. The MPP cable protection tube with expansion locking function of claim 1, wherein: the expansion ring (32) is provided with at least two, the expansion ring (32) is matched with the clamping groove (52), and the diameter of the expansion ring (32) is smaller than the inner diameter of the clamping groove (52).

3. The MPP cable protection tube with expansion locking function of claim 1, wherein: the air outlet end of the air valve (4) is provided with an air guide pipe (41), the air valve (4) is communicated with the expansion valve through the air guide pipe (41), the air valves (4) are multiple, and each air valve (4) is communicated with one expansion ring (32).

4. The MPP cable protection tube with expansion locking function of claim 1, wherein: the materials of the first silica gel pad (31) and the second silica gel pad (51) are high-elasticity silica gel.

5. The MPP cable protection tube with expansion locking function of claim 1, wherein: the male connector (2) is integrally connected with the protection tube body (1), and the female connector (5) is integrally connected with the protection tube body (1).

6. The MPP cable protection tube with expansion locking function of claim 5, wherein: the inner wall side of the female joint (5) is provided with a slot, and the depth of the slot is the same as that of the lead-in ring (3).