阅读说明：本技术 焊接型气体绝缘线路内置式橡胶垫圈更换装置及更换方法 (Replacement device and replacement method for built-in rubber gasket of welding type gas insulated line ) 是由 朱君 曹崇梓 沈志强 秦风斌 于 2021-09-15 设计创作，主要内容包括：一种焊接型气体绝缘线路内置式橡胶垫圈更换装置及更换方法,包括管道内壁固定支架、顶升机构和导体固定支架,管道内壁固定支架包括环式中心体,环式中心体外边缘设有多个可伸缩式支腿,多个可伸缩式支腿绕环式中心体环形设置；环式中心体上设有顶升机构,顶升机构用于驱动导体固定支架移动。本发明仅在管道壁上开孔,通过开孔后在管道内安装一种焊接型GIL设备内置式橡胶垫圈更换装置,实现焊接型GIL设备内置式橡胶垫圈更换。(A built-in rubber gasket replacing device and replacing method for a welding type gas insulated line comprises a pipeline inner wall fixing support, a jacking mechanism and a conductor fixing support, wherein the pipeline inner wall fixing support comprises an annular central body, a plurality of telescopic supporting legs are arranged on the outer edge of the annular central body, and the telescopic supporting legs are annularly arranged around the annular central body; and the ring-type central body is provided with a jacking mechanism, and the jacking mechanism is used for driving the conductor fixing support to move. The invention only opens holes on the wall of the pipeline, and the built-in rubber gasket replacing device of the welding type GIL equipment is arranged in the pipeline after the holes are opened, thereby realizing the replacement of the built-in rubber gasket of the welding type GIL equipment.)

1. The utility model provides a built-in rubber packing ring of welding type gas-insulated circuit changes device which characterized in that: the pipeline inner wall fixing support (1) comprises an annular central body, a plurality of telescopic supporting legs are arranged on the outer edge of the annular central body, and the telescopic supporting legs are annularly arranged around the annular central body; the ring-type central body is provided with a jacking mechanism (2), and the jacking mechanism (2) is used for driving the conductor fixing support (3) to move; the inner diameter of the annular central body is larger than the outer diameter of the conductor (4).

2. The built-in rubber gasket replacing device for the welding-type gas insulated line according to claim 1, characterized in that: the telescopic supporting leg comprises a support screw rod (12) connected with the ring-shaped central body, the support screw rod (12) is in threaded connection with an internal thread adjusting cylinder (13), and a cushion block (14) is arranged at the outer end of the internal thread adjusting cylinder (13).

3. The built-in rubber gasket replacing device for the welding-type gas insulated line according to claim 2, characterized in that: the outer wall of the internal thread adjusting cylinder (13) is in a hexagonal structure.

4. The built-in rubber gasket replacing device for the welding-type gas insulated line according to claim 2, characterized in that: the cushion block (14) is provided with a rubber layer.

5. The built-in rubber gasket replacing device for the welding-type gas insulated line according to claim 1, characterized in that: the jacking mechanism (2) comprises a jacking bottom plate (21) connected with the outer wall of the ring-type central body, a jacking screw rod (23) is arranged on the jacking bottom plate (21), a jacking block (22) is arranged at the top of the jacking screw rod (23), and the jacking block (22) is connected with a fixed stress plate (32) of the conductor fixing support (3).

6. The built-in rubber gasket replacing device for the welding-type gas insulated line according to claim 1, characterized in that: the ring-type central body comprises two semi-ring-type central bodies (11), and the two semi-ring-type central bodies (11) are connected through bolts.

7. The welding-type gas-insulated line built-in rubber gasket replacing device according to claim 1 or 5, characterized in that: the conductor fixing support (3) comprises two semi-ring supports (31), and the two semi-ring supports (31) are connected through bolts.

8. The replacement device for the built-in rubber gasket of the welding-type gas insulated line according to claim 7, wherein: the inner diameter of the full-ring support is smaller than the outer diameter of the conductor (4).

9. The replacement method of the replacement device for the built-in rubber gasket of the welding-type gas insulated line according to claims 1 to 8, characterized by comprising the steps of:

s1: -opening holes in the duct wall, said holes being sized to allow the effective passage of the half-toroidal central body (11) of maximum dimensions;

s2: installing a jacking bottom plate (21) and a jacking screw rod (23) of a jacking mechanism (2) on a semi-ring type central body (11), and installing a support screw rod (12) on the semi-ring type central body (11); welding the jacking block (22) and the fixed stress plate (32) on the semi-ring bracket (31);

s3: putting the semi-ring type central body (11) into the pipeline from the opening, and connecting the two semi-ring type central bodies (11) to form a ring type central body which is sleeved on the conductor (4);

s4: after a cushion block (14) is arranged on the internal thread adjusting cylinder (13), the internal thread adjusting cylinder (13) is arranged on the bracket screw rod (12) in the pipeline (5);

s5: adjusting the position of the internal thread adjusting cylinder (13) to firmly fix the pipeline inner wall fixing support (1) on the inner wall of the pipeline (5), wherein after the pipeline inner wall fixing support (1) is installed, the ring-shaped central body of the pipeline inner wall fixing support (1) is not contacted with the conductor (4);

s6: putting the semi-ring supports (31) into the pipeline from the opening, splicing the two semi-ring supports (31) to form a full-ring support, and sleeving the full-ring support on the conductor (4);

s7: the conductor fixing support (3) is arranged above the pipeline inner wall fixing support (1) by using a jacking screw rod (23), and the full-ring support is not contacted with the conductor;

s8: adjusting the jacking screw rod (23) to be in the lowest state, locking the half ring bracket (31) to connect the bolt, and tightly holding the conductor (4);

s9: detaching the basin-type insulator compression bolt, symmetrically adjusting a jacking screw rod (23) in the jacking mechanism (2) to jack the basin-type insulator compression bolt, transmitting jacking force to the conductor, jacking the whole conductor and the basin-type insulator for a certain distance synchronously, leaving a gap between the lower end of the basin-type insulator (8) and a lower fixing ring (6), taking out a rubber gasket (7) at the lower end of the basin-type insulator, and replacing a new sealing ring;

s10: the jacking screw rods (23) in the jacking mechanisms (2) are symmetrically adjusted to enable the whole jacking mechanism to fall to the original position, and the replacement of the embedded rubber gasket (7) of the inner basin-type insulator is completed;

s11: and finally, compressing the compression ring at the upper end of the basin-type insulator by using a connecting bolt, checking the moment of the bolt, and connecting the basin-type insulator and a fixing ring welded at the lower part into a whole.

Technical Field

The invention belongs to the technical field of replacement of rubber gaskets of embedded basin-type insulators of welded gas insulated circuits, and particularly relates to a replacement device and a replacement method of built-in rubber gaskets of welded gas insulated circuits.

Background

A Gas Insulated Line (GIL) is a common power transmission means, and mainly comprises a pipe shell, a conductor in the pipe, and an insulator between the pipe and the conductor. Among the welding type gas insulated circuit of certain brand producer production, its standard vertical welding pipeline's mounting means does: 1. the pipeline shells are connected by butt welding; 2. the pipeline is connected with the conductor by a basin-type insulator, the basin-type insulator is arranged on a support ring on the inner wall of the pipeline, and the middle part of the basin-type insulator is connected with the conductor by a bolt; 3. the single unit conductor is provided with male and female contacts at the head and the tail, and is connected with other unit conductors in a plugging way.

During the installation phase, the pipes and conductors of the individual units need to be pre-assembled, and therefore the rubber gaskets between the basin insulators and the pipe housings are also installed. The unit pipeline shells are welded and connected into a whole. In the maintenance stage, no finished product equipment and method is used for replacing the rubber gasket.

Disclosure of Invention

In view of the technical problems in the background art, the built-in rubber gasket replacing device and replacing method for the welding type gas insulated line provided by the invention only open a hole in the wall of the pipeline, and the built-in rubber gasket replacing device for the welding type GIL equipment is installed in the pipeline after the hole is opened, so that the built-in rubber gasket of the welding type GIL equipment is replaced.

In order to solve the technical problems, the invention adopts the following technical scheme to realize:

a built-in rubber gasket replacing device for a welding type gas insulated line comprises a pipeline inner wall fixing support, a jacking mechanism and a conductor fixing support, wherein the pipeline inner wall fixing support comprises a ring-shaped central body, a plurality of telescopic supporting legs are arranged on the outer edge of the ring-shaped central body, and the telescopic supporting legs are annularly arranged around the ring-shaped central body; the ring-shaped central body is provided with a jacking mechanism, and the jacking mechanism is used for driving the conductor fixing support to move; the inner diameter of the annular central body is larger than the outer diameter of the conductor. Ensure that the conductor can move up and down in the central body.

In the preferred scheme, the telescopic supporting leg comprises a support screw rod connected with the ring-type central body, the support screw rod is in threaded connection with the internal thread adjusting cylinder, and a cushion block is arranged at the outer end of the internal thread adjusting cylinder.

In a preferable scheme, the outer wall of the internal thread adjusting cylinder is of a hexagonal prism structure.

In a preferable scheme, the cushion block is provided with a rubber layer.

In the preferred scheme, the jacking mechanism comprises a jacking bottom plate connected with the outer wall of the ring-type central body, a jacking screw rod is arranged on the jacking bottom plate, a jacking block is arranged at the top of the jacking screw rod, and the jacking block is connected with a fixed stress plate of the conductor fixing support.

In a preferred scheme, the annular central body comprises two semi-annular central bodies which are connected through bolts.

In a preferred embodiment, the conductor fixing bracket includes two half-ring brackets, and the two half-ring brackets are connected by a bolt.

In the preferable scheme, the inner diameter of the full-ring support formed by the two semi-ring supports is smaller than the outer diameter of the conductor, so that the function of tightly holding the conductor is realized.

In a preferred embodiment, the method for replacing the built-in rubber gasket replacing device for the welding-type gas insulated line comprises the following steps:

s1: opening holes in the wall of the conduit, said holes being sized to allow the passage of the largest-sized semi-toroidal central body efficiently;

s2: installing a jacking bottom plate and a jacking screw of a jacking mechanism on the semi-ring type central body, and installing a support screw on the semi-ring type central body; welding the jacking block and the fixed stress plate on the semi-ring bracket;

s3: putting the semi-ring type central body into the pipeline from the opening, and connecting the two semi-ring type central bodies to form a ring type central body which is sleeved on the conductor;

s4: after the cushion block is arranged on the internal thread adjusting cylinder, the internal thread adjusting cylinder is arranged on the bracket screw rod in the pipeline;

s5: adjusting the position of the internal thread adjusting cylinder to firmly fix the pipeline inner wall fixing support on the inner wall of the pipeline, wherein after the pipeline inner wall fixing support is installed, the ring-shaped central body of the pipeline inner wall fixing support is not contacted with the conductor;

s6: putting the semi-ring supports into the pipeline from the opening, splicing the two semi-ring supports to form a full-ring support, and sleeving the full-ring support on the conductor;

s7: the conductor fixing support is arranged above the pipeline inner wall fixing support by using the jacking screw rod, and the full-ring support is not contacted with the conductor;

s8: adjusting the jacking screw rod to be in the lowest state, locking the semi-ring support connecting bolt, and tightly holding the conductor;

s9: removing the pressing bolt of the basin-type insulator, symmetrically adjusting a jacking screw rod in a jacking mechanism to jack the pressing bolt, transmitting jacking force to the conductor, synchronously jacking the whole conductor and the basin-type insulator for a certain distance, leaving a gap between the lower end of the basin-type insulator and a lower fixing ring, taking out a rubber gasket at the lower end of the basin-type insulator, and replacing a new sealing ring;

s10: the jacking screw rods in the jacking mechanisms are symmetrically adjusted to enable the whole jacking screw rods to fall to the original position, and the replacement of the embedded rubber gasket of the inner basin-type insulator is completed;

s11: and finally, compressing the compression ring at the upper end of the basin-type insulator by using a connecting bolt, checking the moment of the bolt, and connecting the basin-type insulator and a fixing ring welded at the lower part into a whole.

This patent can reach following beneficial effect:

the welding type GIL device can be detached without cutting, the gasket replacement target is realized only by perforating the pipeline wall, the replacement time of the built-in rubber gasket of the welding type GIL device is greatly shortened, the construction efficiency is improved, the power loss caused by power failure of the GIL device is greatly reduced, and meanwhile, the maintenance risk is reduced.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is a view of the structure of the conductor mount of the present invention;

FIG. 3 is a view showing the structure of the fixing bracket for the inner wall of the pipe according to the present invention;

FIG. 4 is a view showing the effect of the installation of the present invention;

fig. 5 is an internal structure view of a conventional GIL apparatus.

In the figure: the device comprises a pipeline inner wall fixing support 1, a ring-type central body 11, a support screw 12, an internal thread adjusting cylinder 13, a cushion block 14, a jacking mechanism 2, a jacking bottom plate 21, a jacking block 22, a jacking screw 23, a conductor fixing support 3, a semi-ring support 31, a fixing stress plate 32, a conductor 4, a pipeline 5, a fixing ring 6, a rubber gasket 7 and a basin-type insulator 8.

Detailed Description

The preferable scheme is as shown in fig. 1 to 4, the built-in rubber gasket replacing device for the welding type gas insulated line comprises a pipeline inner wall fixing support 1, a jacking mechanism 2 and a conductor fixing support 3, wherein the pipeline inner wall fixing support 1 comprises a ring-shaped central body, a plurality of telescopic supporting legs are arranged on the outer edge of the ring-shaped central body, and the telescopic supporting legs are annularly arranged around the ring-shaped central body; the ring-type central body is provided with a jacking mechanism 2, and the jacking mechanism 2 is used for driving the conductor fixing support 3 to move.

The inner diameter of the ring-shaped central body is larger than the outer diameter of the conductor 4, the ring-shaped central body comprises two semi-ring-shaped central bodies 11, and the two semi-ring-shaped central bodies 11 are connected through bolts. Two support screws 12 are welded to each semi-annular central body 11.

Furthermore, the telescopic supporting leg comprises a support screw 12 connected with the ring-shaped central body, the support screw 12 is in threaded connection with an internal thread adjusting cylinder 13, and a cushion block 14 is arranged at the outer end of the internal thread adjusting cylinder 13. The cushion block 14 is provided with a rubber layer, the radian of the cushion block 14 is preferably the same as that of the inner wall of the pipeline 5, and the rubber layer can protect the inner wall of the pipeline 5 from being scratched and increase the friction force. Preferably, the spacer 14 is rotatably connected to the internally threaded adjustment barrel 13.

The outer wall of the internal thread adjusting cylinder 13 is in a hexagonal structure and is a hexagonal long nut, so that the internal thread adjusting cylinder is convenient to rotate by a wrench. Four internal thread adjusting cylinders 13 are symmetrically arranged, and the pipeline inner wall fixing support 1 is supported on the inner wall of the pipeline by rotating the internal thread adjusting cylinders 13, so that a stable base is provided for the whole set of device.

Further, the jacking mechanism 2 comprises a jacking bottom plate 21 connected with the outer wall of the ring-shaped central body, a jacking screw 23 is arranged on the jacking bottom plate 21, a jacking block 22 is arranged at the top of the jacking screw 23, and the jacking block 22 is connected with a fixed stress plate 32 of the conductor fixing support 3. The conductor fixing bracket 3 includes two half ring brackets 31, and the two half ring brackets 31 are connected by bolts.

The jacking bottom plate 21 is welded on the semi-ring type central body 11, the fixed stress plate 32 is welded on the semi-ring support 31, and the jacking block 22 is welded on the lower end face of the fixed stress plate 32. The jacking screw 23 can adopt a basket bolt or a basket bolt similar jacking mechanism.

The installation method comprises the following steps:

s1: the duct wall is perforated with holes sized to allow the passage of the most sizable semi-toroidal central body 11 efficiently; the inner diameter of the pipeline is 500mm, and the outer diameter of the conductor is 180 mm. The diameter of the opening is 250 mm.

S2: installing a jacking bottom plate 21 and a jacking screw 23 of the jacking mechanism 2 on the semi-ring type central body 11, and installing a support screw 12 on the semi-ring type central body 11; the jacking block 22 and the fixed stress plate 32 are welded on the semi-ring support 31;

s3: putting the semi-ring type central body 11 into the pipeline from the opening, and connecting the two semi-ring type central bodies 11 to form a ring type central body which is sleeved on the conductor 4;

s4: after the cushion block 14 is arranged on the internal thread adjusting cylinder 13, the internal thread adjusting cylinder 13 is arranged on the bracket screw 12 in the pipeline 5;

s5: adjusting the position of the internal thread adjusting cylinder 13 to firmly fix the pipeline inner wall fixing support 1 on the inner wall of the pipeline 5, wherein after the pipeline inner wall fixing support 1 is installed, the ring-shaped central body of the pipeline inner wall fixing support 1 is not contacted with the conductor 4;

s6: putting the semi-ring supports 31 into the pipeline from the opening, splicing the two semi-ring supports 31 to form a full-ring support, and sleeving the full-ring support on the conductor 4;

s7: the conductor fixing support 3 is arranged above the pipeline inner wall fixing support 1 by using the jacking screw rod 23, and the full-ring support is not contacted with the conductor;

s8: adjusting the jacking screw rod 23 to be in the lowest state, and connecting the locking semi-ring bracket 31 with the bolt to tightly hold the conductor 4;

s9: detaching the basin-type insulator hold-down bolts, symmetrically adjusting the jacking screw rods 23 in the jacking mechanism 2 to jack the basin-type insulator, transmitting jacking force to the conductor, jacking the whole 11-meter long conductor and the basin-type insulator synchronously for a certain distance, leaving a gap between the lower end of the basin-type insulator 8 and the lower fixing ring 6, taking out the rubber gasket 7 at the lower end of the basin-type insulator, and replacing a new sealing ring;

s10: the jacking screw rods 23 in the jacking mechanisms 2 are symmetrically adjusted to enable the whole jacking mechanism to fall to the original position, and the replacement of the embedded rubber gasket 7 of the inner basin-type insulator is completed;

s11: and finally, compressing the compression ring at the upper end of the basin-type insulator by using a connecting bolt, checking the moment of the bolt, and connecting the basin-type insulator and a fixing ring welded at the lower part into a whole.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.