CN217239142U

CN217239142U - Three-layer co-extrusion dry-type crosslinking unit

Info

Publication number: CN217239142U
Application number: CN202220306211.8U
Authority: CN
Inventors: 赵明耀; 张凇
Original assignee: Hongxin Guotai Cable Co ltd
Current assignee: Hongxin Guotai Cable Co ltd
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-08-19
Anticipated expiration: 2032-02-15

Abstract

The application discloses three-layer is crowded dry-type crosslinking unit altogether relates to crosslinking unit technical field, including the crosslinking unit body, the inside fixedly connected with crosslinking line tail end pipeline of crosslinking unit body, the tip fixedly connected with sealing washer of crosslinking line tail end pipeline. This application is through annular gasbag, the gas tube, the cooperation setting between structures such as inflation hole and rubber tube, annular gasbag installs the inboard at the sealing washer, when needs are changed the sealing washer, accessible gas tube is to the inside air that fills of annular gasbag, the air is after getting into annular gasbag through the inflation hole, make annular gasbag inflation under the atmospheric pressure effect, seal the space between cable and the crosslinked line tail end pipeline inner wall, the user can change the sealing washer this moment, avoided current mode as far as possible because open sealing device when changing the sealing washer, gas and water leakage, lead to the cable in the crosslinked pipeline to be useless, thereby the problem of the waste of cable has been caused.

Description

Three-layer co-extrusion dry-type crosslinking unit

Technical Field

The application relates to the technical field of crosslinking units, in particular to a three-layer co-extrusion dry-type crosslinking unit.

Background

The cross-linking technology is applied to the field of low-voltage cables from the initial stage of birth until the cross-linking technology is developed to the field of medium voltage, high voltage and ultrahigh voltage, and the production of cables with different voltage grades and the configuration of cross-linking production lines with different cross-linking modes are different. The crosslinked cable products of 35kV and below are mainly produced by a semi-dry process, namely, the insulated wire cores of the cable are crosslinked in nitrogen, water cooling is adopted during cooling, the wire cores are cooled quickly, and the production efficiency is high.

The sealing device is used as an important component in production equipment, and the safe operation and the service life of the sealing ring can influence the normal operation of production. Along with the long-term operation of equipment, long-term friction between cable and the sealing washer leads to the sealing washer wearing and tearing serious, is in water pressure and atmospheric pressure effect in addition for a long time under, the lower sealed end of pipeline can appear seriously leaking, gas leakage phenomenon, lead to nitrogen and water supply not enough, current mode is owing to open sealing device when changing the sealing washer, and gas and water leak, lead to the cable in the cross-linked pipeline to make useless, until atmospheric pressure and water pressure fill to the pressure value of settlement, just can normally produce, the waste of cable has been caused.

SUMMERY OF THE UTILITY MODEL

In order to improve current mode owing to open sealing device when changing the sealing washer, gas and water leak, lead to the cable among the crosslinked pipeline to make useless, until atmospheric pressure and water pressure fill to the pressure value of settlement, could normally produce, caused the extravagant problem of cable, this application provides a three-layer is crowded dry-type crosslinking unit altogether.

The application provides a three-layer co-extrusion dry-type cross-linking unit, which adopts the following technical scheme:

a three-layer co-extrusion dry-type crosslinking unit comprises a crosslinking unit body, wherein a crosslinking line tail end pipeline is fixedly connected inside the crosslinking unit body, a sealing ring is fixedly connected to the end part of the crosslinking line tail end pipeline, an annular air bag is fixedly connected in an end inner cavity close to the sealing ring, an inflation tube is detachably connected to the crosslinking line tail end pipeline on one side of the annular air bag and penetrates through the crosslinking line tail end pipeline and the annular air bag, the inflation tube is communicated with the inside of the annular air bag, a spherical plug is fixedly connected to one end of the inflation tube positioned inside the annular air bag, an inflation hole is formed in the side wall of one end of the spherical plug fixedly connected with the inflation tube, a rubber tube is sleeved at one end of the inflation tube positioned inside the annular air bag, and the inner diameter of the rubber tube is smaller than that of the inflation tube, and one end of the inflation tube, which is positioned outside the cross-linked tail end pipeline, is provided with a sealing cover, and the sealing cover is detachably connected with the inflation tube.

In the embodiment, when the sealing function of the sealing ring arranged on the pipeline at the tail end of the cross-linking line is reduced due to long-time friction with the cable, the sealing cover arranged on the inflation tube is firstly opened, then the output end of an external air pump is aligned with the inflation tube, air is injected into the inflation tube, after the air enters the inflation tube, the air enters the inflation hole under the action of air pressure due to the plugging action of the spherical plug, and the rubber tube sleeved on the outer surfaces of the inflation hole and the inflation tube is extruded to expand the rubber tube under the action of the air pressure, so that a gap is formed between the inner wall of the rubber tube and the outer wall of the inflation tube, the air enters the annular air bag through the gap to expand the annular air bag, the gap between the cable and the inner wall of the pipeline at the tail end of the cross-linking line is plugged, at the moment, a user can replace the sealing ring, and the sealing device is prevented from being opened when the sealing ring is replaced in the existing method, the leakage of gas and water results in the waste of the cable in the crosslinked pipeline.

Optionally, a gasket is arranged on the inner side of the sealing ring, the gasket is in a circular ring shape, the aperture of the gasket is larger than that of the sealing ring, and the gasket is fixedly connected with the inner wall of the pipeline at the tail end of the cross-linking line.

In this embodiment, set up the gasket in the inboard of sealing washer for support and guard action to the sealing washer, avoid the cable to drive the sealing washer through the frictional force effect and produce the displacement at the removal in-process as far as possible, thereby lead to the sealing washer to lose the problem of sealed effect.

Optionally, a groove is formed in the middle section of one end, located in the inner cavity of the annular air bag, of the inflation tube, the inflation hole is located inside the groove, the inflation hole penetrates through the inflation tube, and the inflation hole is communicated with the inner cavity of the inflation tube.

In the embodiment, the groove is formed in the inflation tube, the inflation hole is formed in the groove, a gap is reserved between the outer surface of the inflation hole and the inner wall of the rubber tube, and air can enter the rubber tube through the gap conveniently to stretch the rubber tube.

Optionally, one end of the rubber tube, which is far away from the spherical plug, is fixedly connected with a rubber pad, and one side, which is far away from the rubber tube, of the rubber pad is fixedly connected with the inner wall of the pipeline at the tail end of the cross-linking line.

In the embodiment, a rubber pad is arranged at one end of the rubber tube far away from the spherical plug, and the rubber pad is used for fixedly connecting the rubber tube to the inner wall of the pipeline at the tail end of the cross-linking line.

Optionally, a sleeve is arranged on the outer surface of the inflation tube, the sleeve is in threaded connection with the inflation tube, and the outer surface of the sleeve is fixedly connected with the cross-linked tail end pipeline.

In the embodiment, the sleeve is arranged for fixing the inflation tube, the inflation tube is screwed with the sleeve, and a user can conveniently take the inflation tube out of the sleeve by screwing the inflation tube to discharge air in the inner cavity of the annular air bag.

Optionally, the sleeve pipe is close to one of sealed lid serves fixedly connected with mounting panel, the mounting panel with the outer wall of cross-linked line tail end pipeline laminates mutually, be equipped with the screw on the mounting panel, the screw runs through the mounting panel, the screw with the outer wall looks spiro union of cross-linked line tail end pipeline.

In this embodiment, set up the mounting panel and be used for increasing the contact surface between sleeve pipe and the crosslinked tail end pipeline outer wall, improve bushing's stability, adopt the connected mode of screw spiro union to connect, not only the installation is firm, and convenience of customers installs and dismantles work moreover.

Optionally, one end of the inflation tube, which is located outside the cross-linked tail end pipeline, is fixedly connected with a connector, an external thread is formed on the outer surface of the connector, and the sealing cover is in threaded connection with the connector through the external thread.

In the embodiment, the connector is arranged and used for being in threaded connection with the sealing cover, the sealing cover is arranged and used for plugging one end, located on the outer wall of the pipeline at the tail end of the cross-linking line, of the inflation pipe, and the problem that the inflation pipe is blocked due to the fact that dust and sundries in the external environment enter the inflation pipe is avoided as much as possible.

Optionally, an inner cavity of the joint is provided with an inner thread for screwing with an external inflation pipeline.

In the embodiment, the inner cavity of the joint is provided with the internal thread, so that when a user inflates air, an external inflation pipeline can be screwed with the joint, the air tightness of the joint of the inflation pipeline and the joint is improved, and the inflation efficiency is improved.

In conclusion, the beneficial effects of the application are as follows:

this application is through annular gasbag, the gas tube, the cooperation setting between structures such as inflation hole and rubber tube, annular gasbag installs the inboard at the sealing washer, when needs are changed the sealing washer, accessible gas tube is to the inside air that fills of annular gasbag, the air is after getting into annular gasbag through the inflation hole, make annular gasbag inflation under the atmospheric pressure effect, seal the space between cable and the crosslinked tail end pipeline inner wall, the user can change the sealing washer this moment, avoided current mode as far as possible because open sealing device when changing the sealing washer, gas and water leak, lead to the cable in the crosslinked pipeline to be useless, thereby the problem of the waste of cable has been caused.

Drawings

FIG. 1 is a schematic view of the overall connection structure of the present application;

FIG. 2 is a schematic view of a partial connection structure of the present application;

FIG. 3 is a schematic view of the connection structure of the inflation tube, sleeve, mounting plate and connector of the present application.

Description of reference numerals: 1. crosslinking the unit body; 2. a cross-link tail end conduit; 3. a seal ring; 4. a gasket; 5. an annular air bag; 6. an inflation tube; 7. a spherical plug; 8. a groove; 9. an inflation hole; 10. a rubber tube; 11. a rubber pad; 12. a sleeve; 13. mounting a plate; 14. a screw; 15. a joint; 16. an external thread; 17. an internal thread; 18. and (7) sealing the cover.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

Referring to fig. 1-3, a three-layer co-extrusion dry-type crosslinking unit includes a crosslinking unit body 1 for crosslinking a cable, and a pipeline 2 at the tail end of a crosslinking line is fixedly connected inside the crosslinking unit body 1. The end part of the pipeline 2 at the tail end of the cross-connecting line is fixedly connected with a sealing ring 3 with sealing function. An annular air bag 5 for sealing is arranged in an inner cavity of one end, close to the sealing ring 3, of the cross-line tail end pipeline 2, and the outer surface of the annular air bag 5 is fixedly connected with the inner wall of the cross-line tail end pipeline 2.

The pipeline 2 at the tail end of the cross line at one side of the annular air bag 5 is detachably connected with an inflation tube 6 for inflating the annular air bag 5, the inflation tube 6 penetrates through the pipeline 2 at the tail end of the cross line and the annular air bag 5, and the inflation tube 6 is communicated with the inside of the annular air bag 5. One end of the inflation tube 6, which is positioned inside the annular air bag 5, is fixedly connected with a spherical plug 7, and the spherical plug 7 is arranged for plugging one end of the inflation tube 6, which is positioned inside the air bag 5.

The side wall of one end of the spherical plug 7 fixedly connected with the inflation tube 6 is provided with an inflation hole 9 used for inflating the annular air bag 5, one end of the inflation tube 6, which is positioned inside the annular air bag 5, is sleeved with a rubber tube 10, and the inner diameter of the rubber tube 10 is smaller than the diameter of the inflation tube 6, so that the inner wall of the rubber tube 10 can be tightly attached to the outer surface of the inflation tube 6. One end of the inflation tube 6, which is positioned outside the pipeline 2 at the tail end of the cross-linking line, is provided with a sealing cover 18, and the sealing cover 18 is detachably connected with the inflation tube 6.

When the sealing function of the sealing ring 3 arranged on the pipeline 2 at the tail end of the cross-linking line is reduced due to long-time friction with the cable, firstly, the sealing cover 18 arranged on the inflation tube 6 is opened, then the output end of an external air pump is aligned with the inflation tube 6, air is injected into the inflation tube 6, after the air enters the inflation tube 6, the air enters the inflation hole 9 under the action of air pressure due to the plugging action of the spherical plug 7, the rubber tube 10 sleeved on the outer surface of the inflation hole 9 and the inflation tube 6 is extruded, the rubber tube 10 expands under the action of the air pressure, so that a gap is formed between the inner wall of the rubber tube 10 and the outer wall of the inflation tube 6, the air enters the annular air bag 5 through the gap, the annular air bag 5 expands, the cable and the inner wall of the pipeline 2 at the tail end of the cross-linking line are plugged, and at the moment, a user can replace the sealing ring 3, the problem that the cable in the cross-linked pipeline is wasted due to the fact that the sealing device is opened when the sealing ring is replaced in the conventional mode, gas and water are leaked is solved as much as possible.

Referring to fig. 1, a gasket 4 is arranged on the inner side of a sealing ring 3, the gasket 4 is in a circular ring shape, the aperture of the gasket 4 is larger than that of the sealing ring 3, the gasket 4 is fixedly connected with the inner wall of a cross-connecting line tail end pipeline 2, the gasket 4 is arranged on the inner side of the sealing ring 3 and used for supporting and protecting the sealing ring 3, and the problem that the sealing ring 3 loses the sealing effect due to the fact that a cable is driven to move by friction force in the moving process is avoided as much as possible.

Referring to fig. 2 and 3, a groove 8 is arranged on the middle section of one end of the inflation tube 6, which is positioned in the inner cavity of the annular airbag 5, an inflation hole 9 is positioned inside the groove 8, the inflation hole 9 penetrates through the inflation tube 6, and the inflation hole 9 is communicated with the inner cavity of the inflation tube 6. A groove 8 is formed in the inflation tube 6, and an inflation hole 9 is formed in the groove 8, so that a gap is reserved between the outer surface of the inflation tube 6 and the inner wall of the rubber tube 10, air can conveniently enter the rubber tube 10 through the gap, and the rubber tube 10 is expanded.

Referring to fig. 2 and 3, a rubber pad 11 is fixedly connected to one end of the rubber tube 10 away from the spherical plug 7, and one side of the rubber pad 11 away from the rubber tube 10 is fixedly connected to the inner wall of the pipeline 2 at the tail end of the cross-linking line. And a rubber pad 11 is arranged at one end of the rubber tube 10 far away from the spherical plug 7 and is used for fixedly connecting the rubber tube 10 to the inner wall of the pipeline 2 at the tail end of the cross-linking line through the rubber pad 11.

Referring to fig. 2 and 3, a sleeve 12 is arranged on the outer surface of the inflation tube 6, the sleeve 12 is in threaded connection with the inflation tube 6, and the outer surface of the sleeve 12 is fixedly connected with the cross-linked tail end pipeline 2. The sleeve 12 is arranged for fixing the inflation tube 6, the inflation tube 6 is in threaded connection with the sleeve 12, and a user can conveniently take the inflation tube 6 out of the sleeve 12 by screwing the inflation tube 6 to discharge air in the inner cavity of the annular air bag 5.

Referring to fig. 3, sleeve pipe 12 is close to one of sealed lid 18 and serves fixedly connected with mounting panel 13, mounting panel 13 laminates with the outer wall of crosslinked line tail end pipeline 2 mutually, be equipped with screw 14 on mounting panel 13, screw 14 runs through mounting panel 13, screw 14 and crosslinked line tail end pipeline 2's outer wall looks spiro union, it is used for increasing the contact surface between sleeve pipe 12 and the 2 outer walls of crosslinked line tail end pipeline to set up mounting panel 13, the stability that sleeve pipe 12 connects is improved, adopt the connected mode of 14 spiro unions of screw to connect, not only the installation is firm, and convenience of customers installs and dismantles work.

Referring to fig. 2 and 3, a connector 15 is fixedly connected to one end of the inflation tube 6 located outside the cross-line tail end pipeline 2, an external thread 16 is formed on the outer surface of the connector 15, and a sealing cover 18 is screwed with the connector 15 through the external thread 16. The connector 15 is arranged to be in threaded connection with the sealing cover 18, the sealing cover 18 is arranged to be used for plugging one end, located on the outer wall of the pipeline 2 at the tail end of the cross-linking line, of the inflation tube 6, and the problem that the inflation tube 6 is blocked due to the fact that dust and sundries in the external environment enter the inflation tube 6 is avoided to the greatest extent.

Referring to fig. 2, an internal thread 17 for screwing an external inflation tube is formed in the inner cavity of the joint 15, and the internal thread 17 is formed in the inner cavity of the joint 15, so that a user can screw the external inflation tube with the joint 15 when inflating, and the air tightness of the joint between the inflation tube and the joint 15 is improved, thereby improving the inflation efficiency.

The implementation principle of the application is as follows: when the sealing function of the sealing ring 3 arranged on the pipeline 2 at the tail end of the cross-linking line is reduced due to long-time friction with the cable, firstly, the sealing cover 18 arranged on the inflation tube 6 is opened, then the output end of an external air pump is aligned with the inflation tube 6, air is injected into the inflation tube 6, after the air enters the inflation tube 6, the air enters the inflation hole 9 under the action of air pressure due to the plugging action of the spherical plug 7, the rubber tube 10 sleeved on the outer surface of the inflation hole 9 and the inflation tube 6 is extruded, the rubber tube 10 expands under the action of the air pressure, so that a gap is formed between the inner wall of the rubber tube 10 and the outer wall of the inflation tube 6, the air enters the annular air bag 5 through the gap, the annular air bag 5 expands, the gap between the cable and the inner wall of the pipeline 2 at the tail end of the cross-linking line is plugged, and at the moment, a user can replace the sealing ring 3, the problem that the cable in the cross-linked pipeline is wasted due to the fact that the sealing device is opened when the sealing ring is replaced in the conventional mode, gas and water are leaked is solved as much as possible.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a three-layer is crowded dry-type crosslinking unit altogether, includes crosslinking unit body (1), its characterized in that: the cross-linking machine set comprises a cross-linking machine set body (1), a cross-linking line tail end pipeline (2) is fixedly connected inside the cross-linking machine set body (1), a sealing ring (3) is fixedly connected to the end portion of the cross-linking line tail end pipeline (2), an annular air bag (5) is fixedly connected to the inner cavity of one end, close to the sealing ring (3), of the cross-linking line tail end pipeline (2), an inflation tube (6) is detachably connected to one side of the annular air bag (5) on the cross-linking line tail end pipeline (2), the inflation tube (6) penetrates through the cross-linking line tail end pipeline (2) and the annular air bag (5), the inflation tube (6) is communicated with the inside of the annular air bag (5), a spherical plug (7) is fixedly connected to one end, inside the annular air bag (5), and an inflation hole (9) is formed in the side wall of one end of the spherical plug (7), inflation tube (6) are located one of annular gasbag (5) inside is served to overlap and is equipped with rubber tube (10), the internal diameter of rubber tube (10) is less than the diameter of inflation tube (6), inflation tube (6) are located the outside one of cross-line tail end pipeline (2) is served and is equipped with sealed lid (18), sealed lid (18) with inflation tube (6) can be dismantled and be connected.

2. The triple co-extrusion dry crosslinking unit according to claim 1, wherein: the inboard of sealing washer (3) is equipped with gasket (4), gasket (4) are the ring form, the aperture of gasket (4) is greater than the aperture of sealing washer (3), gasket (4) with the inner wall fixed connection of cross-linked line tail end pipeline (2).

3. The triple co-extrusion dry crosslinking unit according to claim 2, wherein: the inflation tube (6) is located be equipped with recess (8) on the interlude of the one end in annular gasbag (5) inner chamber, it is located to aerify hole (9) inside recess (8), it runs through to aerify hole (9) inflation tube (6), aerify hole (9) with inflation tube (6) inner chamber is linked together.

4. The triple co-extrusion dry crosslinking unit according to claim 1, wherein: one end, far away from the spherical plug (7), of the rubber tube (10) is fixedly connected with a rubber pad (11), and one side, far away from the rubber tube (10), of the rubber pad (11) is fixedly connected with the inner wall of the cross-line tail end pipeline (2).

5. The triple co-extrusion dry crosslinking unit according to claim 1, wherein: be equipped with sleeve pipe (12) on the surface of gas tube (6), sleeve pipe (12) with gas tube (6) looks spiro union, the surface of sleeve pipe (12) with cross-line tail end pipeline (2) fixed connection.

6. The triple co-extrusion dry crosslinking unit according to claim 5, wherein: sleeve pipe (12) are close to fixedly connected with mounting panel (13) are served to one of sealed lid (18), mounting panel (13) with the outer wall of cross line tail end pipeline (2) laminates mutually, be equipped with screw (14) on mounting panel (13), screw (14) run through mounting panel (13), screw (14) with the outer wall looks spiro union of cross line tail end pipeline (2).

7. A three-layer co-extrusion dry-type crosslinking machine set according to claim 1, characterized in that: the inflation tube (6) is located one end outside the cross-linked line tail end pipeline (2) is fixedly connected with a connector (15), an external thread (16) is formed in the outer surface of the connector (15), and the sealing cover (18) is in threaded connection with the connector (15) through the external thread (16).

8. The triple co-extrusion dry crosslinking unit according to claim 7, wherein: an inner thread (17) used for being screwed with an external inflation pipeline is arranged in the inner cavity of the joint (15).