KR102461624B1 - Leakage prevention apparatus for non water blockage piping work method - Google Patents

Abstract

The present invention relates to an airtight device for a single-stage method, wherein a fixed pipe body coupled to one end of the valve pipe, one end passing through one side of the fixed pipe body, one end is disposed inside the water supply pipe, and the other end one side is the An outer shaft detachably coupled to the fixed tube body, and installed inside the outer shaft, both ends are exposed to the outside of the outer shaft, and the outer surface is screwed to the inner surface of the outer shaft and rotates when the inner shaft moves in the longitudinal direction of the outer shaft And, a first body disposed inside the water supply pipe, one end of the outer shaft is detachably coupled to one side, and a second body installed at the front end of the first body to be movable in the longitudinal direction of the water supply pipe, a sealing part disposed between the first body and the second body, the sealing part being pressed when the second body moves in the direction of the first body and being in close contact with the inner surface of the water supply pipe, the first body and the second body a pressing means installed in at least one of the body or the region between them to provide an elastic force to the second body in an outward direction, wherein the sealing part includes a sealing member disposed between the first body and the second body; It is disposed on at least one of the front surface or the rear surface of the sealing member, and when it is pressed against the first body or the second body, it unfolds and is supported on one side of the inner surface of the water supply pipe. Provide confidentiality devices for public law.
According to the present invention as described above, it is possible to reliably seal the pipeline and perform the uninterrupted construction method stably without releasing the airtight state, and the structure is simple, so that the manufacturing cost and manufacturing time can be greatly reduced while maintaining / It has the effect of easy maintenance.

Description

Leakage prevention apparatus for non water blockage piping work method

The present invention relates to an airtight device for a non-stop method, and more particularly, it is possible to reliably seal a pipe line and stably perform the inter-stage method without releasing the airtight state, and the structure is simple, thereby reducing manufacturing cost and manufacturing cost. It relates to an airtight device for a non-stop construction method that can significantly reduce time and is easy to maintain/repair.

In general, a water pipe consists of a large-diameter main pipe for transporting large-capacity water over a long distance, and a branch pipe branched from the main pipe and used for relatively short-distance transport to supply water to buildings such as homes and offices.

In this way, a valve must be installed in the branched pipe so that the water supply can be interrupted, so that it is easy to work by the water supply when replacing the old water pipe or replacing the valve.

This conventional method has a disadvantage in that the range of the number of stages is wide as the operation is made after all the valves installed around the replacement point are closed in order to cut off the water supply pipe or the valve of the replacement point.

In addition, if the water supply is cut off as described above, there is a problem that causes inconvenience and loss to each home and various industrial facilities. Corrosion of the pipe was intensified, and it was difficult to fill it with the continuous water method.

Accordingly, in recent years, an airtight device for discontinuous water has been developed for sealing the inside of the branch pipe and performing the continuous water method, an example of which is shown in FIG. 1 .

1 is a view schematically showing a conventional airtight device for non-stage water.

As shown in FIG. 1, the conventional airtight device 100 for non-stage water includes a first body 110 and a second body 120 that is movably installed at the front end of the first body 110 in the front and rear directions, and the first An elastic member 130 interposed between the body 110 and the second body 120 , and a rotational force transmitting body 140 rotatably installed inside the first body 110 and having one side coupled to the second body 120 . ), and the rear end is screwed to the outer surface of the adjustment shaft 150 so that the adjustment shaft 150 is installed movably in the longitudinal direction when the rotational force transmission body 140 rotates, and the adjustment shaft 150 is coupled to the end of the adjustment shaft It consists of a locking pin 160 that expands or narrows according to the forward and backward movement of 150 , and an expansion unit 170 installed in a region between the first body 110 and the second body 120 .

Looking at the method of using the conventional airtight device 100 for non-stop water is as follows.

First, if you want to replace the valve (B) installed in the branch pipe (G2) branched from the main pipe (G1), insert the entire device into the branch pipe (G2), and through a separate driving unit 180 to the rotational force transmission body (140) provides rotational power. Accordingly, the adjustment shaft 150 is advanced, the locking pin 160 is unfolded, and the branch pipe G2 is supported on one side of the inner wall of the branched main pipe G1.

When the rotational force transmission body 140 is continuously rotated in a state in which the locking piece is supported, the rotational force transmission body 140 advances because the adjustment shaft 150 is fixed by the locking pin 160, and is coupled to the rotational force transmission body 140. The second body 120 advances together. At this time, the expansion part 170 is pressed against the second body 120 to inflate, and is in close contact with the inner wall surface of the branch pipe G2 to seal the branch pipe G2.

When the branch pipe (G2) is airtight, the valve replacement operation proceeds, and when the valve replacement operation is completed, the first body 110 and the second body 120 are removed from the valve ( B) Retract to the rear end, and withdraw the conventional airtight device 100 for non-stage water in the airtight state of the branch pipe (G2) through the newly installed valve (B).

As described above, when using the conventional airtight device 100 for non-stage water, there is an advantage that the valve B can be replaced with the non-stage water method, but the water pressure of the water moving to the main pipe line (G1) and the branch pipe (G2) is the expansion part. As it is continuously applied to 170, the airtight force of the expansion unit 170 is lowered, and the airtight state of the branch pipe (G2) by the expansion unit 170 is released during the valve replacement operation, thereby causing an accident or causing a water accident around the work area. Problems such as locking occurred.

In addition, the conventional airtight device 100 for non-stage water includes a plurality of configurations so that the supporting operation of the locking pin 160 and the expansion operation of the expansion unit 170 are sequentially performed through the rotational operation of the rotational force transmitting body 140 . Because this is used, the structure is very complicated, and a separate driving unit 180 is required to rotate the rotational force transmitting body 140, so it is very difficult to store or maintain/manage it. There was a problem with the request.

Republic of Korea Patent Registration No. 10-1959223 Airtight device for discontinuous water when replacing the valve in the water supply pipe

The present invention has been devised to solve the above problems, and an object of the present invention is to reliably seal the pipeline and perform the uninterrupted construction method stably without releasing the airtight state, and the structure is simple. An object of the present invention is to provide an airtight device for an uninterrupted process that is easy to maintain and repair while greatly reducing cost and manufacturing time.

According to one aspect of the present invention for achieving the above object, in an airtight device for a continuous method for sealing the inner side of the water supply pipe in order to repair or replace the valve pipe coupled to the water supply pipe, , a fixed tube body coupled to one end of the valve tube, one end passing through one side of the fixed tube body, one end disposed inside the water supply pipe, the other end of the outer shaft being detachably coupled to the fixed tube body; Installed inside the outer shaft, both ends are exposed to the outside of the outer shaft, and the inner shaft moves in the longitudinal direction of the outer shaft when the outer surface is screwed to the inner surface of the outer shaft to rotate, and is disposed inside the water supply pipe, on one side A first body to which one end of the outer shaft is detachably coupled, a second body movably installed in the longitudinal direction of the water supply pipe at the front end of the first body, and disposed between the first body and the second body and a sealing part which is pressed and closely adhered to the inner surface of the water supply pipe when the second body moves in the direction of the first body, and installed in at least one of the first body and the second body, or an area therebetween and a pressing means for providing an elastic force to the second body in an outward direction, wherein the sealing part is disposed on at least one of a sealing member disposed between the first body and the second body and a front or rear surface of the sealing member It provides an airtight device for a non-stage method, characterized in that it includes an elastic support unit supported on one side of the inner surface of the water supply pipe while being stretched when pressed to the first body or the second body.

delete

In addition, the elastic support unit may have a plurality of incisions cut outwardly from one side of the outer periphery along the circumference.

In addition, the inner shaft has a torque providing means is coupled to the end exposed to the outside, the torque providing means is a handle that provides a gripping area so that the operator can directly rotate the inner shaft or a motor that directly provides a rotational force to the inner shaft Either one is preferred.

In addition, the first body has a key coupled to one side to which the outer shaft is coupled, and the outer shaft may have an 'L'-shaped locking groove into which the key is inserted and coupled to one side of the outer surface.

According to the present invention as described above, it is possible to reliably seal the pipeline and perform the uninterrupted construction method stably without releasing the airtight state, and the structure is simple, so that the manufacturing cost and manufacturing time can be greatly reduced while maintaining / It has the effect of easy maintenance.

1 is a view schematically showing a conventional airtight device for uninterrupted water;
Figure 2 is a cross-sectional view showing an airtight device for a stepless construction method according to an embodiment of the present invention;
3 is an enlarged view of 'A' shown in FIG. 2;
4 is a perspective view of a sealing part according to an embodiment of the present invention;
5 is an enlarged view of 'B' shown in FIG. 2;
6 is a view showing a state in which the end of the outer shaft is moved to the entire valve value in the branch pipe according to an embodiment of the present invention;
7 is a view showing a state in which the second body presses the sealing part by retracting the inner shaft according to an embodiment of the present invention;
8 is a view showing a state in which the fixed tube body and the valve tube are separated according to an embodiment of the present invention;
9 is a view showing a state in which the airtight state of the branch pipe is released by advancing the inner shaft according to an embodiment of the present invention;
10 is a view showing a state of moving the outer shaft outward according to an embodiment of the present invention. drawing,
Figure 11 is a view showing a state of separating the airtight device for a non-stage method according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the description, the airtight device for the discontinuous method according to an embodiment of the present invention is to be able to repair or replace the valve installed in the water supply pipe by the discontinuous method, below is the airtight device for the discontinuous method according to this embodiment It will be explained that by sealing one side of the branch pipe branching from the main pipe, the replacement of the branch pipe valve can be performed by a non-stage method.

Figure 2 is a cross-sectional view showing an airtight device for a non-stage method according to an embodiment of the present invention, Figure 4 is an enlarged view of 'A' shown in Figure 2, Figure 4 is a sealing according to an embodiment of the present invention It is a perspective view of a part, and FIG. 5 is an enlarged view of 'B' shown in FIG.

2 to 5, the airtight device for a non-stage method according to an embodiment of the present invention includes a fixed tube body 10, an outer shaft 20, an inner shaft 30, and a first body 40 and , is configured to include a second body (50), a sealing portion (60) and a pressing means (70).

The fixed pipe body 10 is formed in a tubular shape with one end open among both ends, and is attached and detached to the end of the valve pipe (BG) in which the valve (B) is installed among one side of the branch pipe (G2) branched from one side of the water supply pipe (G1). As possibly coupled, it serves to support the outer shaft 20 and the inner shaft 30 to be described later.

The outer shaft 20 has a predetermined length and is formed in a pipe shape having a thread (not shown) formed on the inner surface, and one end passes through the center of the fixed tube body 10 and is disposed inside the branch tube G2 . This outer shaft 20 serves to move in the front-rear direction when the inner shaft 30 rotates by screwing the inner shaft 30 to be described later therein and supporting it.

In addition, the outer shaft 20 is formed with a 'L'-shaped locking groove 21 on one end side disposed in the branch pipe G2.

In addition, the bundle 22 having a handle 22a formed thereon is integrally coupled to one side of the outer surface of the outer shaft 20, which means that the operator pushes the outer shaft 20 into the branch tube G2 through the handle 22a, or the bundle (22) serves to facilitate the operation of coupling or removing the fixed tube body 10 to the valve tube (BG) in a state in which it is fixedly coupled to the fixed tube body 10 .

The inner shaft 30 is formed in the shape of a rod having a screw thread 31 formed on its outer surface, and is inserted into the outer shaft 20 so that the outer surface is screwed to the inner surface of the outer shaft 20 , and both ends are toward the outside of the outer shaft 20 . are exposed And, the inner shaft 30 is a rotational force providing means 32 is coupled to one side of the end exposed to the outside of the fixed tube body (10).

Here, the rotational force providing means 32 is a handle that provides a gripping area so that the operator can directly rotate the inner shaft 30, or a motor that is shaft-coupled to the inner shaft 30 and directly provides the rotational force. , In this embodiment, it will be described that the handle is used as shown in FIG.

When the rotational force is transmitted through the rotational force providing means 32, the inner shaft 30 moves in the front and rear directions through the screw coupling structure with the outer shaft 20 when the rotational force is transmitted through the rotational force providing means 32, that is, the second body 50 to be described later. When moving in the direction serves to press the second body 50 in a direction away from the first body (40).

That is, the inner shaft 30 presses the second body 50 in a direction away from the first body 40 while the second body 50 presses the sealing part 60 by the pressing means 70 . By returning to the initial position, it serves to release the sealing state of the sealing portion 60 sealing the branch pipe (G2).

” 형상으로 형성되며, 지관(G2) 내부에 배치된다.The first body 40 is formed in a substantially block shape, and the cross section is approximately “

It is formed in a ” shape and is disposed inside the branch pipe (G2).

In addition, the first body 40 has a protrusion 41 protruding to the rear is formed on the rear surface, and an insertion hole 41a into which the end of the outer shaft 20 is inserted is formed in the center of the protrusion 41 , and the protrusion 41 is formed. ) The key 42 is coupled to one side to take a structure in which the end of the key 42 is disposed in the insertion hole (41a).

Accordingly, the key 42 is inserted into the locking groove 21 of the outer shaft 20 inserted into the insertion hole 41a so that the shaft is firmly fixedly coupled to the rear surface of the first body 40 .

The first body 40 is a sealing part by pressing or releasing the sealing part 60 to be described later when the position disposed in the branch pipe G2 is fixed by the outer shaft 20 and the second body 50 moves. (60) serves to seal the inside of the branch pipe (G2) or release the airtight state.

” 형상으로 형성되고, 지관(G2) 내부 중 제1 몸체(40)와 대향되게 배치되며, 지관(G2)의 길이방향을 따라 왕복이동가능하게 설치된다.The second body 50 is formed in a substantially block shape, and the cross section is “

” shape, disposed to face the first body 40 in the inside of the branch pipe G2, and is installed to be reciprocally movable along the longitudinal direction of the branch pipe G2.

The second body 50 is formed with an extension 51 extending outwardly from one side of the side, and the extension portion 51 is pressed in the direction of the first body 40 by a pressing means 70 to be described later and moved. ) presses the sealing part 60 to inflate the sealing part 60 , so that the sealing part 60 serves to airtight the inside of the branch pipe G2 .

The sealing part 60 is disposed between one end of the first body 40 and the protrusion of the second body 50 and is installed to surround the outer surface of the second body 50 and the sealing member 61 and the sealing member ( 61) is configured to include an elastic support unit 62 disposed in an area corresponding to the front and rear surfaces, respectively, and seals the inside of the branch pipe G2 so that the valve B can be replaced or repaired by a non-stop method play a role

Here, as the sealing member 61, a general rubber ring may be used, and it is preferable that the front and rear surfaces are inclined so that one surface of the inclined elastic support unit 62 can be in close contact.

The elastic support unit 62 is formed in a hollow plate shape, and a plurality of cutouts 62a cut outward from the outer periphery are formed along the circumference.

As described above, the elastic support unit 62 is disposed to surround the front and rear surfaces of the sealing member 61, respectively, and serves to greatly improve the durability of the sealing member 61 as well as to the second body 50. When it is pressed by the pressure, it is supported on the inner surface of the branch pipe G2 while being stretched, thereby fixing the position of the sealing member 61 even when pressure is applied to the second body 50 or the first body 40 by water pressure or other environmental factors. It serves to ensure that the airtight state of the branch pipe (G2) can be firmly maintained.

Furthermore, the elastic support unit 62 provides reliable workability to the operator who actually operates it by quickly returning to the initial shape by elasticity when the pressing force of the second body 50 is released.

The pressing means 70 is fixed to the first body 40 and installed on one side of the bolt T passing through the second body 50 , and has an elastic force on the second body 50 in the direction of the first body 40 . may be configured as a spring providing

6 is a view showing a state in which the end of the outer shaft 20 is moved to the full valve unit value inside the branch pipe according to an embodiment of the present invention, and FIG. 2 is a view showing a state in which the body presses the sealing part, Figure 8 is a view showing a state in which the fixed tube body and the valve tube are separated according to an embodiment of the present invention, Figure 9 is an embodiment of the present invention It is a view showing a state in which the airtight state of the branch pipe is released by advancing the inner shaft according to FIG. Figure 11 is a view showing a state of separating the airtight device for a non-stage method according to an embodiment of the present invention.

The method of replacing the valve (B) by the non-stage method using the airtight device for the non-stage method according to an embodiment of the present invention having such a configuration will be described with reference to the accompanying FIGS. 6 to 9 as follows. .

First, excavate the ground of the area where the valve (B) is to be replaced, close the valve (B) to seal the inside of the branch pipe (G2), and cut and separate a part of the branch pipe (G2) at the rear end of the valve pipe (BG). Set up a work area

When the working area is prepared, the airtight device for the non-stage method according to an embodiment of the present invention is coupled to one end of the valve pipe (BG), and in a state in which the operator holds the handle 22a, it is directed toward the valve pipe (BG). By pushing and moving the first body 40, the second body 50, and the inner shaft 30 together with the outer shaft 20, the sealing part 60 is positioned at the front end of the valve tube BG, as shown in FIG. In order to do so, the bundle 22 formed with the handle 22a is bolted to the fixed tube body 10 to fix it.

Then, by releasing the valve (B) so that the water is accommodated up to the inside of the fixed tube body (10).

Next, when the inner shaft 30 rotates in one direction through the rotational force providing means 32 , the inner shaft 30 moves in the handle direction along the longitudinal direction of the outer shaft 20 , that is, retreats, and at the same time the second body 50 ) is released and the second body 50 moves in the direction of the first body 40 due to the elastic force of the pressing means 70 to press the sealing part 60 .

Here, in the second body 50, a very strong force is transmitted by adding the water pressure flowing from the main pipe to the branch pipe G2 to the elastic force of the pressing means 70, and presses the sealing part 60 through the transmitted force. will do

At this time, in the sealing part 60, the sealing member 61 is compressed by the pressing force of the first body 40 and the second body 50, and the elastic support units 62 respectively coupled to the front and rear surfaces thereof are unfolded. . The sealing member 61, which is compressed and inflated to the outside, is in close contact with the inner wall surface of the branch pipe G2 to seal the inside of the branch pipe G2, and the elastic support unit 62 has one side of the branch pipe G2 in the unfolding process. supported on the wall.

As described above, as the elastic support unit 62 is firmly supported on the inner wall surface of the branch pipe G2 at the front and rear sides of the sealing member 61 , even when an external force is applied to the first body 40 and the second body 50 , the sealing member By preventing the flow of (61), the airtight state of the branch pipe (G2) by the sealing member (61) can be stably maintained.

When the branch pipe (G2) is airtight by the sealing part (60), the fixed pipe body (10) is separated from the valve pipe (BG) and the outer shaft (20) and the inner shaft (30) are drawn out together with the fixed pipe body (10) , when the fixed tube body 10 is separated together with the inner shaft 30 and the outer shaft 20, the old valve tube BG is separated from the branch tube G2 and replaced with a new valve tube BG.

Then, in the reverse order of separation, the fixed tube body 10 together with the inner shaft 30 and the outer shaft 20 are coupled to the valve tube BG again.

Next, when the inner shaft 30 is rotated in the reverse direction through the rotational force providing means 32, the inner shaft 30 advances and presses the second body 50 in a direction away from the first body 40, and thus the second As the body 50 is retracted, the pressure state of the sealing part 60 is released, and the sealing member 61 is quickly returned to its initial shape by the elastic support unit 62 .

Accordingly, the internal airtight state of the branch pipe (G2) is released, and water flows into the fixed pipe body (10).

In a state in which water is introduced into the fixed tube body 10, the bundle 22 is separated from the fixed tube body 10, and the handle 22a is pulled together with the outer shaft 20 along with the inner shaft 30, the first body 40 and The second body 50 is moved into the fixed tube body 10 .

Thereafter, the branch pipe (G2) is hermetically sealed using the newly replaced valve (B), and the fixed pipe body (10) is separated from the valve pipe (BG). And after repairing the cut pipe, the replacement work of the valve (B) is completed by filling the work area.

Although the present invention has been described with reference to the above-mentioned preferred embodiments, various modifications and variations are possible without departing from the spirit and scope of the invention. Accordingly, the appended claims are intended to cover such modifications and variations as fall within the scope of the present invention.

10: fixed tube body 20: outer shaft
21: locking groove 22: bundle
22a: handle 30: inner shaft
31: screw thread 32: torque providing means
40: first body 41: protrusion
41a: insertion hole 42: key
50: second body 51: extension
60: sealing part 61: sealing member
62: elastic support unit 62a: cutout
70: heating means 71: bolt
G1 : water pipe G2 : branch pipe
BG: valve pipe B: valve

Claims (5)

In the airtight device for the continuous water method for sealing the inner side of the water supply pipe to repair or replace the valve pipe coupled to the water supply pipe,
a fixed pipe body coupled to one end of the valve pipe;
an outer shaft having one end passing through one side of the fixed tube body, one end disposed inside the water supply pipe, and the other end being detachably coupled to the fixed tube body;
an inner shaft installed inside the outer shaft, both ends exposed to the outside of the outer shaft, and the outer surface is screwed to the inner surface of the outer shaft to move in the longitudinal direction of the outer shaft when rotating;
a first body disposed inside the water supply pipe, one end of the outer shaft being detachably coupled to one side;
a second body movably installed at the front end of the first body in the longitudinal direction of the water supply pipe;
a sealing part disposed between the first body and the second body and pressed against the inner surface of the water supply pipe when the second body moves in the direction of the first body;
and a pressing means installed in at least one of the first body and the second body, or an area between them, to provide an elastic force to the second body in an outward direction,
The sealing part
a sealing member disposed between the first body and the second body; and
It is disposed on at least one of the front surface or the rear surface of the sealing member, and when it is pressed against the first body or the second body, it unfolds and is supported on one side of the inner surface of the water supply pipe. Secret devices for public law.
delete According to claim 1,
The elastic support unit is an airtight device for a single-stage construction method, characterized in that a plurality of incisions cut outward from one side of the outer periphery are formed along the circumference.
According to claim 1,
The inner shaft has a rotational force providing means coupled to the end exposed to the outside,
The rotational force providing means is an airtight device for a non-stage construction method, characterized in that either a handle providing a gripping area so that an operator can directly rotate the inner shaft or a motor directly providing a rotational force to the inner shaft is used.
According to claim 1,
The first body has a key coupled to one side to which the outer shaft is coupled,
The outer shaft is an airtight device for a single-stage construction method, characterized in that a 'L'-shaped locking groove into which the key is inserted and coupled is formed on one side of the outer surface.

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