CN112696556A

CN112696556A - On-spot maintenance pipeline attach fitting

Info

Publication number: CN112696556A
Application number: CN202011465125.3A
Authority: CN
Inventors: 孙得璋; 何先龙; 张昊宇; 李思汉; 戴君武
Original assignee: Institute of Engineering Mechanics China Earthquake Administration
Current assignee: Institute of Engineering Mechanics China Earthquake Administration
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-04-23
Anticipated expiration: 2040-12-14
Also published as: CN112696556B

Abstract

The invention relates to the field of pipelines, and particularly discloses a field maintenance pipeline connecting joint which comprises a connecting cylinder and welding cylinders arranged at two ends of the connecting cylinder, wherein each welding cylinder comprises a first side pipe and a second side pipe, the second side pipe is connected with the connecting cylinder, a welding ring is arranged between the first side pipe and the second side pipe, a vacuum groove is arranged on the welding ring, the vacuum groove is annular, the vacuum groove is sealed by a plastic strip, the melting temperature of the plastic strip is higher than that of the pipeline, a tapered groove is communicated with the inner wall of the vacuum groove, and one end with smaller width faces the vacuum groove; the welding ring is further provided with an annular cutting groove, the cutting groove is internally provided with a cutting ring in a concentric rotating mode, the inner wall of the cutting ring is provided with a mounting groove, a spring is arranged in the mounting groove, and a cutting knife is arranged on the spring. The invention aims to solve the technical problem of inconvenient maintenance of a rubber pipeline.

Description

On-spot maintenance pipeline attach fitting

Technical Field

The invention relates to the field of pipelines, and particularly discloses a field maintenance pipeline connecting joint.

Background

At present, large pipelines are needed in large engineering projects such as remote gas transmission, liquid transmission, cables and the like, and the pipelines are made of metal, rubber, plastics and the like. The pipe may be damaged in case of earthquake, corrosion, landslide, etc., resulting in leakage of the transmission medium, or the cable may be exposed to require immediate repair or replacement, but the pipe is difficult to repair due to its large volume.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a field-maintained pipe joint to solve the technical problem of inconvenient maintenance of rubber pipes.

In order to achieve the purpose, the invention provides the following technical scheme:

a field maintenance pipeline connecting joint comprises a connecting cylinder and welding cylinders arranged at two ends of the connecting cylinder, wherein each welding cylinder comprises a first side pipe and a second side pipe, the second side pipe is connected with the connecting cylinder, a welding ring is arranged between the first side pipe and the second side pipe, a vacuum groove is formed in each welding ring and is annular, the vacuum groove is sealed by a plastic strip, the melting temperature of the plastic strip is higher than that of a pipeline, a tapered groove is communicated with the inner wall of the vacuum groove, and one end with smaller width faces the vacuum groove; the welding ring is further provided with an annular cutting groove, the cutting groove is internally provided with a cutting ring in a concentric rotating mode, the inner wall of the cutting ring is provided with a mounting groove, a spring is arranged in the mounting groove, and a cutting knife is arranged on the spring.

Optionally, an electric heating piece is arranged on the inner wall of the mounting groove, and the cutting knife is in contact with the electric heating piece.

Optionally, the lower end of the electric heating piece is bent and extends out of the inner ring of the welding ring, and the lower end of the electric heating piece is located on one side, close to the vacuum groove, of the welding ring.

Optionally, the inner side walls of the first side pipe and the second side pipe are provided with sliding grooves, the sliding grooves are provided with drivers in a sliding mode, the drivers can move on the sliding rails, and the drivers can be detachably connected with the cutting rings.

Optionally, the top of spout one side is provided with the opening that is used for installing the driver, the bottom of spout is provided with the tooth's socket, is provided with the profile of tooth track in the tooth's socket, be provided with the walking wheel on the driver, the walking wheel can mesh with the profile of tooth track.

Optionally, a plurality of jacks are arranged on the cutting ring, and the bottoms of the jacks are electrically connected with the electric heating sheet; the bottom of driver is provided with the inserted bar, the inserted bar is used for supplying power to the jack.

Optionally, the side end and the bottom of the cutting knife are both triangular cones, and the cross section of the mounting groove is the same as that of the cutting knife.

Optionally, the top of spout is equipped with the apical trough, and the damping slides in the apical trough and is provided with the tooth piece, goes up the tooth piece and can mesh with the walking wheel.

Optionally, an electric heating ring is arranged in the inner ring of the first side pipe, the electric heating ring is attached to the outer wall of the pipeline, a plurality of taper holes are formed in the electric heating ring, and the small-diameter ends of the taper holes face the outside of the electric heating ring.

The working principle and the beneficial effects of the scheme are as follows:

1. in this scheme, the welding ring can pass through the cutting knife with the rubber pipeline and cut, then the electric heat piece on the rethread welding ring comes to heat the pipeline and melts, and the electric heat piece still can heat the plastic strip on the vacuum tank simultaneously, and the vacuum tank just can follow the external medium that inhales after the plastic strip melts, can inhale the pipeline after will melting, and the vacuum tank forms integratively with the pipeline promptly after the cooling, realizes sealedly to the pipeline of connecting cylinder agent damage accomplishes the maintenance.

2. After the cutting knife is heated, the cutting knife can melt the pipeline gradually, then radially cut the pipeline under the spring action, and after the driver was installed, the driver can drive the cutting ring and remove, and the cutting ring drives the cutting knife again and cuts. Because the lateral wall and the diapire of cutting knife all are the toper, so the middle part of cutting knife is relatively thick, and the heat gathering is many, can further melt the pipeline, avoids the too fast cooling of pipeline. The electric heat piece in the mounting groove can directly contact with the pipeline and the plastic strip, the direct heating effect is better, the outer wall of the pipeline can be melted more quickly, the rubber pipeline in the melting state can be sucked into the vacuum groove, and sealing is completed.

3. Be provided with the bell mouth on the vacuum tank, be provided with the taper hole on the electric heat ring, and the orientation of bell mouth and taper hole is opposite, and the bell mouth is big footpath end outwards, gets into the bell mouth cooling and stereotypes the back when molten rubber, can fix vacuum tank and pipeline, not only plays sealed effect, still plays the effect of connecting fixedly. And the large-diameter end of the taper hole faces inwards, so that molten rubber can conveniently enter the taper hole to complete sealing, and the sealing property is improved.

4. The driver supplies power to the electric heating piece through the inserted bar and generates heat, the inserted bar can play the effect of connecting the cutting ring simultaneously again, and the driver can drive the cutting ring and remove and cut and melt when removing.

5. The top of spout is provided with the tooth piece, goes up tooth piece damping sliding connection in the apical trough, so the driver receives certain resistance when removing, reduces its translation rate, improves the stability of its removal, makes the cutting melt the effect better.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a longitudinal sectional view of the chute in the first side tube;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a longitudinal cross-sectional view of the cutting ring;

FIG. 5 is an enlarged view of FIG. 4 at B;

FIG. 6 is a schematic diagram of the structure of the driver;

FIG. 7 is a schematic view of the construction of the fused ring and the cutting ring;

FIG. 8 is a longitudinal cross-sectional view of a vacuum groove in the fused ring;

fig. 9 is a schematic structural view of the cutting knife.

The drawings are numbered as follows: the device comprises a connecting cylinder 1, a second side pipe 2, a first side pipe 3, a welding ring 4, a cutting ring 5, a sliding groove 6, a top groove 7, an upper tooth block 8, a tooth-shaped track 9, an opening 10, a taper hole 11, a jack 12, a mounting groove 13, a spring 14, an electric heating piece 15, a cutting knife 16, a driver 17, a plastic strip 18, a vacuum groove 19, a taper groove 20, a travelling wheel 21 and a plug column 22.

Detailed Description

The following is further detailed by way of specific embodiments:

examples

A field service line connector, as shown in figures 1-9, comprises a connector barrel 1 and a fusion splicing barrel disposed at either end of the connector barrel 1.

The welding cylinder comprises a first side pipe 3 and a second side pipe 2, and the second side pipe 2 is fixedly connected with the connecting cylinder 1. The first lateral pipe 3, the second lateral pipe 2 and the connecting cylinder 1 are composed of two half ring parts, namely, the first lateral pipe, the second lateral pipe and the connecting cylinder can be disassembled into two half rings, and the two half rings can be combined into a whole ring shape through bolts. A welding ring 4 is fixedly arranged between the first side pipe 3 and the second side pipe 2, and a vacuum groove 19 is arranged on the inner wall of the welding ring 4 close to the first side pipe 3. The vacuum groove 19 is annular and concentric with the second welding ring 4, the vacuum groove 19 is sealed by an annular plastic strip 18, the melting temperature of the plastic strip 18 is higher than that of the pipeline, a tapered groove 20 is communicated on the inner wall of the vacuum groove 19, and one end of the tapered groove 20 with smaller width faces the vacuum groove 19. The welding ring 4 is also provided with an annular cutting groove which is a through groove and is concentric with the welding ring 4, and the cutting groove is closer to the second side pipe 2 than the vacuum groove 19.

The concentric rotation is provided with cutting ring 5 in the cutting groove, is provided with a plurality of mounting grooves 13 on cutting ring 5's the inner wall, and the fixed spring 14 that is provided with in mounting groove 13, the fixed cutting knife 16 that is provided with on the spring 14. The side end and the bottom of the cutting knife 16 are in a triangular cone shape, and the cross section of the mounting groove 13 is the same as that of the cutting knife 16. The four inner side walls of the mounting groove 13 are provided with electric heating pieces 15, the cutting knife 16 is in contact with the electric heating pieces 15, the lower end of one side, close to the connecting cylinder 1, of the electric heating pieces 15 is bent and extends out of the inner ring of the welding ring 4, and the lower end of the electric heating pieces 15 is located on one side, close to the vacuum groove 19, of the welding ring 4 and is in contact with the plastic strip 18.

The inner side walls of the first side pipe 3 and the second side pipe 2 are provided with sliding chutes 6, and the top of one side of each sliding chute 6 is provided with an opening 10 for installing a driver 17. The bottom of the sliding chute 6 is provided with a tooth socket, and a tooth-shaped track 9 is arranged in the tooth socket. The driver 17 comprises a motor and a bottom inserted link, wherein the output end of the motor is provided with a walking wheel 21, and the walking wheel 21 can be meshed with the toothed rail 9. The top of spout 6 is equipped with apical groove 7, and the damping slides in the apical groove 7 and is provided with tooth piece 8, goes up tooth piece 8 and can mesh with walking wheel 21. The cutting ring 5 is provided with a plurality of jacks 12, the bottoms of the jacks 12 are electrically connected with the electric heating sheets 15, and the inserted rods are used for supplying power to the jacks 12.

An electric heating ring is fixedly arranged in the inner ring of the first side pipe 3, the electric heating ring is attached to the outer wall of the pipeline, a plurality of taper holes 11 are formed in the electric heating ring, and the small-diameter ends of the taper holes 11 face the outside of the electric heating ring.

The fused ring 4 and the cutting ring 5 are also made up of two half-ring parts.

In the specific implementation:

firstly, the connecting cylinder 1 and the welding ring 4 are sleeved on a pipeline to be maintained, then the driver 17 is installed, the travelling wheel 21 of the driver 17 enters the sliding groove 6, at the moment, the electric heating piece 15 is electrified to generate heat, and then the electric heating ring is electrified. The driver 17 is started, the inserting column 22 of the driver 17 is inserted into the inserting hole 12 of the cutting ring 5, so that the cutting ring 5 can be driven to move, the damaged pipeline is cut off by the cutting ring 5, meanwhile, the electric heating piece 15 heats the plastic strip 18 and the pipeline below the plastic strip to be molten, and the vacuum groove 19 sucks the plastic strip 18 and the molten rubber pipeline after the plastic strip 18 is molten. After the electric heating ring heats the pipeline, the molten rubber pipeline can infiltrate into the taper hole 11 of the electric heating piece 15. The electric heating sheet 15 and the electric heating ring of the embodiment only melt the outer wall of the pipeline when heating, and the pipeline cannot be completely melted, so that the sealing performance of the pipeline cannot be damaged. After the fused pipeline is cooled, the pipeline can be hermetically connected with the welding ring 4 and the cutting ring 5, and the maintenance is finished. The pipeline after being cut is remained in the connecting cylinder 1, the damaged cutting ring 5 is replaced by the connecting cylinder 1, and the connecting cylinder 1 has better strength and rigidity and higher stability.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.

Claims

1. The utility model provides a field service pipeline attach fitting which characterized in that: the welding device comprises a connecting cylinder and welding cylinders arranged at two ends of the connecting cylinder, wherein each welding cylinder comprises a first side pipe and a second side pipe, the second side pipe is connected with the connecting cylinder, a welding ring is arranged between the first side pipe and the second side pipe, a vacuum groove is formed in the welding ring and is annular, the vacuum groove is sealed by a plastic strip, the melting temperature of the plastic strip is higher than that of a pipeline, a conical groove is communicated with the inner wall of the vacuum groove, and one end with smaller width faces the vacuum groove; the welding ring is further provided with an annular cutting groove, the cutting groove is internally provided with a cutting ring in a concentric rotating mode, the inner wall of the cutting ring is provided with a mounting groove, a spring is arranged in the mounting groove, and a cutting knife is arranged on the spring.

2. The field serviceable pipeline connection joint as recited in claim 1, further comprising: the inner wall of the mounting groove is provided with an electric heating piece, and the cutting knife is in contact with the electric heating piece.

3. The field serviceable pipeline connection joint as recited in claim 2, further comprising: the lower end of the electric heating piece is bent and extends out of the inner ring of the welding ring, and the lower end of the electric heating piece is positioned on one side, close to the vacuum groove, of the welding ring.

4. A field service pipe coupling according to claim 3, wherein: be provided with the spout on the inside wall of first side pipe and second side pipe, it is provided with the driver to slide on the spout, the driver can remove on the slide rail, the driver can be dismantled with the cutting ring and be connected.

5. The field serviceable pipeline connection joint as recited in claim 4, further comprising: the top of spout one side is provided with the opening that is used for installing the driver, the bottom of spout is provided with the tooth's socket, is provided with the profile of tooth track in the tooth's socket, be provided with the walking wheel on the driver, the walking wheel can mesh with the profile of tooth track.

6. The field serviceable pipeline connection joint as recited in claim 5, further comprising: the cutting ring is provided with a plurality of jacks, and the bottoms of the jacks are electrically connected with the electric heating sheet; the bottom of driver is provided with the inserted bar, the inserted bar is used for supplying power to the jack.

7. The field serviceable pipeline connection joint as recited in claim 6, further comprising: the side end part and the bottom part of the cutting knife are both in a triangular cone shape, and the cross section of the mounting groove is the same as that of the cutting knife in shape.

8. The field serviceable pipeline connection joint as recited in claim 7, further comprising: the top of spout is equipped with the apical groove, and the damping slides in the apical groove and is provided with the tooth piece, goes up the tooth piece and can mesh with the walking wheel.

9. The field serviceable pipeline connection joint as recited in claim 8, further comprising: an electric heating ring is arranged in the inner ring of the first side pipe, the electric heating ring is attached to the outer wall of the pipeline, a plurality of taper holes are formed in the electric heating ring, and the small-diameter ends of the taper holes face the outside of the electric heating ring.