CN219933355U

CN219933355U - Valve replacement auxiliary device

Info

Publication number: CN219933355U
Application number: CN202321118763.7U
Authority: CN
Inventors: 刘建江; 廖静芸; 高志钊; 王炜; 周志彪
Original assignee: Zhongshan Towngas Co ltd
Current assignee: Zhongshan Towngas Co ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-10-31
Anticipated expiration: 2033-05-10

Abstract

The utility model discloses a valve replacement auxiliary device, which comprises an input pipe, wherein the input end of the input pipe is connected with a valve, the output end of the input pipe is connected with an expansion bag which can be inflated after being inflated with gas or liquid, the input pipe is also sleeved with a sleeve, one end of the sleeve, which is close to the valve, is connected with a plugging piece, a first through hole for the input pipe to pass through is arranged on the plugging piece, a sealing piece for limiting the gas or liquid to flow out from between the first through hole and the input pipe is arranged on the plugging piece, the other end of the sleeve is provided with a first connecting structure which can be connected with the output end of the valve to be replaced, when the valve is replaced, the input pipe is pushed to enable the expansion bag to pass through the valve to be replaced and enter a pipeline connected with the input end of the valve to be replaced, and when the input pipe is inflated with liquid or gas, the expansion bag is inflated to plug the pipeline connected with the input end of the valve to be replaced, so that the valve can be replaced under pressure without shutting off a main valve, and the influence on other users is reduced.

Description

Valve replacement auxiliary device

Technical Field

The utility model relates to the technical field of pipeline valve replacement and maintenance, in particular to an auxiliary valve replacement device.

Background

In urban pipeline construction, valves are often used to control the on-off of the delivery pipeline. With the increase of the service life of the valve, the valve can have a plurality of phenomena which seriously affect the service functions of the valve, such as erosion of the valve body, ageing and corrosion of the sealing element, so that the valve is difficult to open or close, rust and leakage of the sealing element, and the like, and the valve needs to be replaced to restore the normal functions of the equipment. Because the pipelines are generally filled with liquid or gas, the valves are replaced after the main valve is closed, and the valves are replaced in a pressureless state, which can seriously affect the normal use of the pipeline transportation materials by other users. Thus, there is a need for a device that can accomplish a "zero-pressure" replacement of a damaged valve in the event of a pipe pressure.

The present utility model has been made based on the above-described circumstances.

Disclosure of Invention

The utility model overcomes the defects of the prior art and provides the valve replacement auxiliary device which can replace the damaged valve under the condition of the pressure of the pipeline.

The utility model is realized by the following technical scheme:

the utility model provides a valve change auxiliary device, includes the input tube, the input of input tube is connected with the valve of control input tube break-make, and the output of input tube is connected with the expansion bag that can expand after filling gas or liquid, still overlaps on the input tube to have the sleeve that can hold the expansion bag, the sleeve is close to the one end of valve and is connected with the shutoff piece that is used for sealed telescopic, be equipped with the first through-hole that supplies the input tube to pass on the shutoff piece, be equipped with on the shutoff piece with input tube sliding connection and be used for restricting the sealing member that flows between gas or liquid follow first through-hole and the input tube, telescopic other end is equipped with the first connection structure that can be connected with the output of the valve that needs to be changed.

The valve replacement auxiliary device comprises the sealing piece, wherein the sealing piece comprises the silica gel block, the silica gel block comprises the connecting part connected with the plugging piece and the inserting part capable of being inserted into the sleeve and sealing the sleeve, and the silica gel block is provided with the second through hole penetrating through the connecting part and the inserting part and allowing the input pipe to pass through.

According to the valve replacement auxiliary device, the containing groove is formed in one end of the plugging piece, the connecting portion is arranged in the containing groove, the first internal threads are formed in the inner wall of the containing groove, and the first external threads which can be in threaded connection with the first internal threads are formed in the outer wall of the sleeve.

In the valve replacement auxiliary device, the insertion part is in a truncated cone shape, the root of the insertion part is larger than the inner hole of the sleeve, and the top of the insertion part is smaller than the inner hole of the sleeve.

A valve replacement aid as described above wherein the seal is an interference fit with the inlet tube.

In the valve replacement auxiliary device, a limiting block for limiting the insertion part to push the expansion bag is further arranged on the input pipe.

In the valve replacement auxiliary device, the limiting block is in threaded connection with the input pipe.

The valve replacement auxiliary device comprises a first connecting structure and a second connecting structure, wherein the first connecting structure comprises second external threads arranged on the outer wall of the sleeve or second internal threads arranged on the inner wall of the sleeve.

A valve replacement aid as described above, the inflatable bladder comprising a rubber bladder.

A valve replacement aid as described above, the valve comprising a valve core.

Compared with the prior art, the utility model has the following advantages:

1. when the valve is replaced, the sleeve is connected with the output end of the valve to be replaced through the first connecting structure, so that gas or liquid in the pipeline is blocked in the sleeve when the valve to be replaced is opened, the input pipe is pushed to enable the expansion bag to penetrate through the valve to be replaced and enter the pipeline connected with the input end of the valve to be replaced, when the liquid or gas is filled into the expansion bag through the input pipe, the expansion bag expands to further block the pipeline connected with the input end of the valve to be replaced, at the moment, the valve to be replaced is removed, the liquid or gas in the pipeline is blocked by the expansion bag and cannot continue to flow outwards, after the valve is replaced, the material in the expansion bag is released through the valve on the input pipe to enable the expansion bag to shrink, then the input pipe is pulled to pull out the expansion bag, so that the valve can be replaced under the condition that the pipeline is pressurized, the total valve does not need to be closed, and influence on other users is reduced.

2. The sealing piece is provided with a sealing piece which is in sliding connection with the input pipe, and gas or liquid is limited to flow out from a gap between the first through hole and the input pipe through the sealing piece, so that leakage is prevented when the valve to be replaced is opened.

3. The input pipe is also provided with a limiting block, and the insertion part is limited by the limiting block to push the expansion bag to drop.

Drawings

The utility model is described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is an exploded schematic view of the present utility model;

FIG. 4 is a schematic view of the structure of the closure of the present utility model;

fig. 5 is a schematic structural view of a stopper in the present utility model.

Detailed Description

For a better understanding of the technical solutions of the present utility model, the following detailed description of the present utility model is provided with reference to the drawings and the detailed description below:

the auxiliary device for replacing the valve comprises an input pipe 1, wherein the input end of the input pipe 1 is connected with a valve 2 for controlling the on-off of the input pipe 1, the output end of the input pipe 1 is connected with an expansion bag 3 which can be inflated to block a pipeline after being inflated with gas or liquid, the input pipe 1 is further sleeved with a sleeve 4 which can accommodate the expansion bag 3, one end of the sleeve 4, which is close to the valve 2, is connected with a blocking piece 5 used for sealing the sleeve 4, the blocking piece 5 is provided with a first through hole 51 for the input pipe 1 to pass through, the blocking piece 5 is provided with a sealing piece which is connected with the input pipe 1 in a sliding way and used for limiting gas or liquid to flow out from between the first through hole 51 and the input pipe 1, and the other end of the sleeve 4 is provided with a first connecting structure 41 which can be connected with the output end of the valve which needs to be replaced.

When the valve is replaced, the sleeve 4 can be connected with the output end of the valve to be replaced through the first connecting structure 41, so that gas or liquid in the pipeline is blocked in the sleeve 4 after the valve to be replaced is opened, the input pipe 1 is pushed to enable the expansion bag 3 to penetrate through the valve to be replaced and enter the pipeline connected with the input end of the valve to be replaced, the input end of the input pipe 1 is connected with the inflating pump, the inflating pump is used for inflating the expansion bag 3 to fill the gas into the expansion bag 3 so as to block the pipeline connected with the input end of the valve to be replaced, at the moment, the valve to be replaced is removed, the liquid or the gas in the pipeline is blocked by the expansion bag 3 and does not continue to flow outwards, after the valve is replaced, the gas in the expansion bag 3 is discharged through the valve 2 on the input pipe 1, then the input pipe 1 is pulled out of the expansion bag 3, and therefore the valve can be replaced under the condition that the pipeline is pressurized, the master valve is not required to be closed, and the influence on other users is reduced. In the same way, liquid can be pumped into the expansion bag 3 by a water pump to replace the inflation pump.

In an embodiment, the first connecting structure 41 includes a second external thread provided on the outer wall of the sleeve 4 or a second internal thread provided on the inner wall of the sleeve 4, and is connected to the valve with the internal thread at the connecting end through the second external thread or is connected to the valve with the external thread at the connecting end through the second internal thread. In use, the raw material tape may be wrapped around the second external thread or the external thread of the externally threaded valve to limit leakage of gas or liquid from the conduit from the connection.

The sealing member includes the silica gel piece, the silica gel piece includes connecting portion 61 and can insert sleeve 4 and carry out sealed insert portion 62 to sleeve 4 with shutoff piece 5 connection, be equipped with on the silica gel piece and run through connecting portion 61 and insert portion 62 and supply input tube 1 second through-hole 63 that passes, sealing member and input tube 1 interference fit can scribble lubricating oil in the input tube 1 outer wall when using to reduce the frictional force between input tube 1 and the second through-hole 63 inner wall, and then more easily stimulate input tube 1.

One end of the plugging piece 5 is provided with a containing groove 52, the connecting part 61 is arranged in the containing groove 52, a first internal thread 53 is arranged on the inner wall of the containing groove 52, and a first external thread 42 which can be in threaded connection with the first internal thread 53 is arranged on the outer wall of the sleeve 4.

In one embodiment, the connecting portion 61 is glued in the receiving groove 52 by glue, but it is also possible to fix the silicone block to the blocking piece 5 by interference fit of the connecting portion 61 with the receiving groove 52. The insertion part 62 is cone frustum-shaped, the root of the insertion part is larger than the inner hole of the sleeve 4, and the top of the insertion part is smaller than the inner hole of the sleeve 4, so that after the insertion part is inserted into the sleeve 4, the nozzle of the sleeve 4 can be tightly attached to the side wall of the insertion part 62, the sealing effect is improved, and the leakage of substances in a pipe is prevented. The first internal thread 53 can further press the silica gel block after being screwed with the first external thread 42, so that the connecting portion 61 is deformed toward the inner wall of the accommodating groove 52, the sealing effect is improved, and leakage is prevented.

The input tube 1 is also provided with a limiting block 7 for limiting the insertion part 62 to push the expansion bag 3, and the limiting block 7 limits the insertion part 62 or the sleeve 4 to strike and push the expansion bag 3, so that the expansion bag 3 is not easy to break the connection with the input tube 1. In one embodiment, the stopper 7 is screwed with the input tube 1 or welded to the input tube 1. Of course, the limiting block 7 and the input tube 1 can also be integrally formed.

In an embodiment, the expansion bag 3 may be fastened and fixed on the input tube 1 by the iron wire 8, and of course, a quick tracheal joint may be provided between the output port of the input tube 1 and the expansion bag 3 to connect the input tube 1 and the expansion bag 3. The inflatable bladder 3 is a rubber bladder, but the inflatable bladder 3 may be made of other materials.

The valve 2 on the input pipe 1 is a valve core, the valve core comprises a valve seat 21 and a blocking block 22, an inner cavity 211 for accommodating the blocking block 22 is arranged in the valve seat 21, communication holes 212 for communicating the inner cavity 211 are formed in the upper end and the lower end of the inner cavity 211, a spring 23 for pushing the blocking block 22 to the upper communication hole 212 and enabling the blocking block 22 to block the communication hole 212 is arranged between the blocking block 22 and the lower wall of the inner cavity 211, a push rod 24 extending out of the valve seat 21 is further arranged on the blocking block 22, and when in inflation, an inflation nozzle pushes the push rod 24 so as to push the blocking block 22 away from the communication hole 212, and then gas enters the input pipe 1. In one embodiment, the valve seat 21 is screwed to the inner wall of the input tube 1.

In one embodiment, both the blocking piece 5 and the input pipe 1 are made of copper, so that static electricity generated during use is reduced, gas in a static electricity detonating pipeline is prevented, and the use safety of the device is improved.

Working principle:

the input pipe 1 is pulled to enable the expansion bag 3 to be contained in the sleeve 4, the sleeve 4 is connected with the output end of the valve to be replaced through the first connecting structure 41, so that gas or liquid in a pipeline is plugged in the sleeve 4 after the valve to be replaced is opened, the input pipe 1 is pushed to enable the expansion bag 3 to penetrate through the valve to be replaced and enter the pipeline connected with the input end of the valve to be replaced, the input end of the input pipe 1 is connected with an inflating pump, the inflating pump is used for inflating the expansion bag 3 to plug the pipeline connected with the input end of the valve to be replaced through the inflating pump, the valve to be replaced is detached together with the sleeve 4 and a plugging piece, then the valve to be replaced is detached from the sleeve 4, the valve to be installed is opened and connected to the sleeve, the other end of the valve to be installed is connected with the pipeline plugged by the expansion bag 3, the push rod 24 of the valve core is pushed to enable the gas in the expansion bag 3 to be contracted, then the input pipe 1 is pulled to enable the expansion bag 3 to be pulled out of the pipeline and contained in the sleeve 4, the valve to be installed is detached together with the plugging piece, and the valve to be replaced, and the other end of the valve to be replaced is detached.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. An auxiliary device is changed to valve, its characterized in that: including input tube (1), the input of input tube (1) is connected with valve (2) of control input tube (1) break-make, and the output of input tube (1) is connected with and fills inflatable bladder (3) that can expand after gas or liquid, still overlaps on input tube (1) and has sleeve (4) that can hold inflatable bladder (3), sleeve (4) are close to one end of valve (2) and are connected with shutoff piece (5) that are used for sealed sleeve (4), be equipped with on shutoff piece (5) and supply first through-hole (51) that input tube (1) passed, be equipped with on shutoff piece (5) with input tube (1) sliding connection and be used for restricting the sealing member that flows between gas or liquid follow first through-hole (51) and the input tube (1), the other end of sleeve (4) is equipped with can be connected with the output of the valve that needs to change first connection structure (41).

2. A valve replacement aid according to claim 1, wherein: the sealing element comprises a silica gel block, the silica gel block comprises a connecting part (61) connected with the plugging element (5) and an inserting part (62) capable of being inserted into the sleeve (4) and sealing the sleeve (4), and a second through hole (63) penetrating through the connecting part (61) and the inserting part (62) and allowing the input tube (1) to pass through is formed in the silica gel block.

3. A valve replacement aid according to claim 2, wherein: one end of the plugging piece (5) is provided with a containing groove (52), the connecting part (61) is arranged in the containing groove (52), a first internal thread (53) is arranged on the inner wall of the containing groove (52), and a first external thread (42) which can be in threaded connection with the first internal thread (53) is arranged on the outer wall of the sleeve (4).

4. A valve replacement aid according to claim 3, wherein: the insertion part (62) is in a truncated cone shape, the root of the insertion part (62) is larger than the inner hole of the sleeve (4), and the top of the insertion part (62) is smaller than the inner hole of the sleeve (4).

5. A valve replacement aid according to claim 4, wherein: the sealing element is in interference fit with the input tube (1).

6. A valve replacement aid according to claim 2, wherein: the input pipe (1) is also provided with a limiting block (7) for limiting the insertion part (62) to push the expansion bag (3).

7. A valve replacement aid according to claim 6, wherein: the limiting block (7) is in threaded connection with the input pipe (1).

8. A valve replacement aid according to claim 1, wherein: the first connecting structure (41) comprises a second external thread arranged on the outer wall of the sleeve (4) or a second internal thread arranged on the inner wall of the sleeve (4).

9. A valve replacement aid according to claim 1, wherein: the inflatable bladder (3) comprises a rubber bladder.

10. A valve replacement aid according to claim 1, wherein: the valve (2) comprises a valve core.