KR101126432B1 - System for removal of a brach feed pipe and method for removal of a brach feed pipe using the same - Google Patents

Abstract

The present invention relates to an inlet pipe demolition system and method for dismantling an inlet pipe from which a fluid, in particular city gas, is supplied from the main building. In order to provide an inlet pipe demolition system in which a safe and rapid construction can be achieved without leakage of fluid with a small excavation area in the inlet pipe demolition, the inlet pipe demolition system according to the present invention has a pipe clamp of the inlet pipe demolition system. It can be fixed to, the valve connection portion can be connected to the branch tee, the cylinder comprises a stopper and the stopper is pressed into the perforations of the main tube can be formed in the airtight structure between the branch tee and the main tube do.

City gas, incoming pipe, branch tee, gas leak, bypass, plug, capping

Description

System for removal of a brach feed pipe and method for removal of a brach feed pipe using the same}

The present invention relates to an inlet pipe demolition system and method for dismantling an inlet pipe to which a fluid is supplied from the main pipe. More specifically, the present invention relates to an inlet pipe demolition system and method for dismantling an inlet pipe to which city gas is supplied from a main pipe such as a medium pressure pipe, and at the same time cutting / removing branch tee and sealing the main pipe to the outside. It is about.

Fluid supplied to a plurality of demand sources from a central supply, such as city gas, is typically supplied using conduits. A number of pipes, called inlet pipes, branch off from the central source to the main building connected to each source.

Here, since many demand sources are widely distributed in areas where people can act, such as houses, malls, and factories, it is common to bury underground and minimize interference with areas where people can act.

In the case of city gas, it is common that the final source of demand such as a house, a shopping mall, or a factory is a building, and such a building stops or changes the direction of supply of city gas due to many reasons such as demolition, reconstruction, or a request from a consumer. I need to. At this time, it is necessary to remove the inlet pipe connected to the previous customer from the user's site boundary.

However, in this work, the problem is that the city gas supplied must continue to be supplied to other demanding places, so that the removal of the inlet pipe must be performed without stopping the gas supply. In order to solve this problem, a stopper device is currently used.

This will be described in more detail with reference to the drawings.

FIG. 1A shows a general form in which a fluid, such as city gas, is supplied to a gas demand source through a draw tee 20 through a branch tee 20 along a medium pressure pipe 10 connected from a central source.

If, for some reason, it is no longer necessary to supply the city gas to the gas demand source, the cut off pipe at the user's site boundary should be blocked.

1b schematically shows a stopper device 40 currently used for this task. The stopper device 40 is provided with a bypass pipe 41 and a sealing part 42 before and after the branching tee 20 to prevent the flow of gas to the branching tee 20 and the inlet pipe 30, while maintaining the medium pressure pipe ( By diverting the gas flowing into 10), city gas can be supplied to other demand destinations.

However, due to the stopper device 40, a large construction area is required before and after the branching tee 20.

Furthermore, when the conventional stopper device 40 is used, damage to the medium pressure pipe 10 may occur depending on the stopper installation location.

In addition, when using the conventional stopper device 40, there is a problem that it takes one day in one operation due to the difficulty of work and the large excavation area, and the conventional stopper device 40 itself is expensive.

Accordingly, the present inventors came up with a system that can remove the inlet pipe through a sophisticated hermetic operation while reducing the work area.

Accordingly, an object of the present invention is to provide an inlet pipe demolition system and a demolition method using the same that can safely and quickly work without interruption of supply and leakage of fluid such as gas as a small excavation area in the inlet pipe demolition For that purpose.

In order to solve the above problems, an embodiment of the present invention, a pipe clamp, a valve connecting portion, a cylinder and the inlet pipe demolition system including a housing in which the cylinder can move coaxially, the pipe clamp is the inlet pipe A dismantling system can be secured to the main building, a lower portion of the valve connecting portion can be connected to a branch tee between the main tube and the inlet pipe, an upper portion of the valve connecting portion can be connected to the housing, and the cylinder includes a stopper, The stopper is pressed into the perforations of the main building to provide an inlet pipe dismantling system, characterized in that to form an airtight structure between the branch tee and the main building.

In addition, the inlet pipe demolition system further includes a branch holder and a branch holder plug, the branch holder may be installed in the perforation of the main building, the branch holder plug is installed on the branch holder to the outside of the main building It is desirable to be able to keep airtight against.

Here, the lower portion of the valve connection portion may be hermetically connected to the branch holder and the branch tee, and the valve connection portion may more preferably control the flow of fluid passing through the upper and lower portions of the valve connection portion.

In addition, the pipe clamp is preferably made of a pipe upper clamp and a pipe lower clamp that can surround the main pipe.

In addition, the introduction pipe dismantling system further comprises a connection support, the connection support, the upper support is connected to the upper side of the cylinder to align the axis of the cylinder; And a lower supporter that can be connected to the lower side of the cylinder.

In order to solve the above problems, another embodiment of the present invention, (a) installing the inlet pipe demolition system including a pipe clamp, a valve connecting portion, a cylinder and a housing in which the cylinder can move coaxially to the main building ; (b) entering the stopper of the cylinder into a branch tee between the main tube and the inlet tube and compressing the stopper such that the perforations of the main tube are hermetically sealed by the stopper; (c) removing the branch tee and the inlet pipe; (d) installing a branch holder in a position where the branch tee is removed from the main building; And (e) installing a branch holder plug on the branch holder.

In addition, the step (a), (a1) installing the pipe clamp in the main pipe; (a2) installing the valve connecting portion, the housing and the cylinder on the branch tee; And (a3) it is preferable to include a step of aligning the cylinder by connecting the upper support to the top of the cylinder.

In addition, the step (c), it is preferable to include the step of removing the branch and the valve connection and the housing connected thereto.

In addition, the step (e), the step of installing the valve connecting portion and the housing on the branch holder; Removing the stopper and locking the valve connection; Installing the branch holder plug; And dismantling the inlet pipe demolition system.

In the case of using the inlet pipe demolition system according to the present invention, the digging area for the branch tee and the inlet pipe removal is reduced, thereby significantly reducing the construction cost and duration.

In addition, the inlet pipe demolition system according to the present invention only works in the branch tee, and does not require a fixed socket work directly to the main building, it is possible to safely construction without the risk of fluid leakage, such as city gas.

In addition, the inlet pipe demolition system according to the present invention is not only possible to work without supply of fluid such as city gas without a separate bypass pipe, but also expensive construction is possible because expensive bypass piping and related equipment are not required.

Hereinafter, the present invention will be described in detail with reference to the drawings.

In the present specification, a system for supplying "gas" or "city gas" will be described as an example, but any of the fluid supply systems that can be supplied through a conduit can be used with the introduction pipe demolition system and method according to the present invention. to be.

As used herein, the term "main building" means a central conduit through which the incoming pipe leading to the final demand destination is branched out. In the embodiment of the city gas supply, since the medium pressure pipe in which the inlet pipe is branched may be the main pipe, the medium pressure pipe used as the same reference numeral should be understood as an example of the main pipe.

As used herein, the term "perforated part of the main building" means an opening of the main building located in the main building and the branching connection part, and the fluid in the main building communicates with the outside to flow to the inlet pipe. Normally, it is not exposed to the outside by branching, etc., but it is exposed to the outside during the construction and removal of branching in the main building. This is the part that must be sealed to the outside at all times when the inlet pipe is removed.

As used herein, "dismantling" or "dismantling" of a branching tee, an inlet pipe, means the operation of separating the branch tee, the inlet pipe from the main building, the same meaning, such operation is a stopper device according to the prior art or It is an object to use a drawing pipe demolition system according to the present invention.

Description of Inlet Pipe Demolition System 100

Hereinafter, the introduction pipe demolition system 100 according to the present invention will be described with reference to FIGS. 2 to 4.

Inlet pipe demolition system 100 according to the present invention is made of a pipe clamp 110, the connection support 120, the valve connecting portion 130, the housing 140, the cylinder 150, for finishing the main pipe 10 It may include separate branch holder 160 and branch holder plug 170.

The pipe clamp 110 includes a pipe upper clamp 111 and a pipe lower clamp 112. The pipe upper clamp 111 and the pipe lower clamp 112 are semi-circular or semi-cylindrical having an inner circumference corresponding to the diameter of the main pipe 10 to be worked. (See Fig. 3)

By making the upper pipe clamp 111 and the lower pipe clamp 112 separately, it is possible to reduce the possibility of damage to the main pipe 10, thereby promoting safe work while firmly connecting and fixing the incoming pipe demolition system 100 to the main pipe 10. You can.

A plurality of fasteners 113 are positioned in the upper pipe clamp 111 and the lower pipe clamp 112. Some fasteners 113 may be connected to a fastening member (not shown) for connecting the pipe upper clamp 111 and the pipe lower clamp 112, and some other fasteners 113 will be described below. ) Can be installed.

The connection support 120 includes a lower support 121 and an upper support 122 that are connected to the pipe clamp 110 and pivotally moveable.

One end of the upper support 122 is connected to the groove 156 of the cylinder body 152 (see FIG. 4) and used for axial alignment of the cylinder 150 such that the stopper 151 elaborates the perforation of the main tube 10. Should be able to squeeze confidentially.

One end of the lower support 121 is connected to the groove 155 of the cylinder body 152 (see FIG. 4) and serves to firmly fix the cylinder 150 and prevent the cylinder from leaving after cutting the branch tee 20. .

The other ends of the upper support 122 and the lower support 121 may be connected to the fastener 113 of the pipe clamp 110 using a separate fastening member (not shown).

The lower portion of the valve connection portion 130 may be connected to the branch tee 20 and the upper portion may be connected to the housing 140. In addition, in the demolition step of the branching tee 20, a lower portion of the valve connection unit 130 may be connected to the branch holder 160. (See Figures 5D, 5E)

The valve connection unit 130 may be locked from the outside, and the locking may prevent the flow of gas through the valve connection unit 130. This function is used to install the branch holder plug 170 to be described later.

The housing 140 is coaxial with the cylinder 150, and the cylinder 150 may move up and down within the housing 140. In particular, the valve 141 may be connected to the outside of the housing 140 so that the gas in the housing 140 may be moved to a separate tank by connecting the valve 141 with a separate tank (not shown).

Cylinder 150 is a stopper 151 that can be connected to the perforated part of the main tube 10 in an airtight manner, and connected to the stopper 151, the cylinder body 152 of the rod-shaped tube, the stopper 151 saw the pipe ( And a cylinder handle 153 which can be squeezed and moved to the perforation of 10).

As shown in Figure 4, the stopper 151 may be formed in a truncated cone shape, the diameter of the wide surface of the truncated cone shape is larger than the diameter of the perforated portion of the main pipe 10, the outer side is covered with an elastic member The perforation of (10) can be made airtight. In addition, it is preferable that the elastic member outside the stopper 151 is a heat resistant material.

Grooves 155 and 156 may be positioned in upper and lower portions of the cylinder body 152, respectively, and may be connected to the upper support 122 and the lower support 121.

Branch holder 160 is a member for sealing the perforations of the main tube 10 to the outside by installing the branch holder plug 170 after the removal of the branch tee 20 and the inlet pipe. (See FIGS. 5C-5F)

The lower portion of the branch holder 160 is sized to seal the perforated portion of the main tube 10, and preferably, a separate sealing member may be connected to the lower portion. A connection part that may be connected to the valve connection part 130 may be positioned at an upper outer side of the branch holder 160, and the connection part may be a male screw. A connection portion to which the branch holder plug 170 may be connected may be located inside the upper portion of the branch holder 160, and the connection portion may be female or female.

In addition, the branch holder plug 170 may be hermetically connected to the branch holder 160 and may include a separate capping member.

Explanation of entry pipe removal method

Referring to Figures 2, 5A to 5F and 6 will be described a removal pipe removal method using the introduction pipe removal system 100 according to the present invention.

First, the inlet pipe demolition system 100 according to the present invention as shown in Figures 2 and 5a is installed in the main building 10 (S100).

More specifically, first, the pipe upper clamp 111 and the pipe lower clamp 112 are installed in the main pipe 10, and these are connected by a separate fastening member (not shown), and thus the pipe clamp 110 surrounding the main pipe. Connect the lower support 121 and the upper support 122 to. This connected state is shown in FIG. 2.

Next, the valve connecting portion 130 and the housing 140 are connected to the branch tee 20. The cylinder 150 is connected to the housing 140 so as to be movable coaxially.

Next, the upper support 122 is connected to the groove 156 of the cylinder body 152 so that the cylinder 150 is vertically aligned with the main pipe 10 (S110).

Next, the existing plug which was blocking the upper part of the branch tee 20 is removed. At this time, to prevent gas leakage, the plug is removed after installing the valve connecting portion 130 on the upper part of the branch tee 20 from which the cap is removed. The valve connecting portion 130 is a sandwich valve shape, it can be used to remove the plug without gas leakage. Thereafter, the stopper 151 of the cylinder 150 is moved downward. The cylinder handle 153 may be used for this movement.

As the stopper 151 moves downward, it passes through the branch tee 20 to reach the perforated portion of the main tube 10, and as the stopper 151 continues to squeeze, it closes the perforated portion of the main tube 10 in a closed manner. (S120). This hermetic construction is possible due to the correct cylinder 150 alignment using the upper member 122 and the elastic member outside the stopper 151. This state is shown in FIG. 5A.

Next, the lower part of the inlet pipe and the branching tee 20 is cut. Inlet pipe is removed separately, the branch tee 20 is disassembled upward along the cylinder 150 axis along with the valve connecting portion 130, the housing 140 connected to the upper (S130).

Next, the upper support 122 is released and the lower support 121 is fixed to the groove 155 of the cylinder body 152 (S140). In some cases, the upper support 1220 may be first released to facilitate the cutting of the inlet pipe and the branching tee 20, and then the step S130 may be performed next. In some cases, the branch support 20 may be disassembled upward and the lower support 121 may be fixed. That is, it should be understood that step S130 and step S140 may be performed at the same time.

During the step S130 and step S140, the stopper 151 is in a state of sealing the perforated part of the main pipe 10 in a hermetic manner so that there is no risk of gas leakage to the outside. In particular, by fixing the lower support 121 to the cylinder body 152, it is possible to firmly fix the cylinder 150 after dismantling the branch tee 20 can be more effectively prevent the gas leak. This state is shown in FIG. 5B.

Next, the branch holder 160 enters through the cylinder 150 and is installed on the perforated part of the main pipe 10 (S150). This state is shown in FIG. 5C. The lower support 121 may be temporarily released for installation and the upper support 122 may be fixed again.

Next, the valve connection unit 130 and the housing 140 are installed again (S160). This installation is to loosen the stopper 151 and to finish the perforation of the main tube 10 with the branch holder plug 170. In the installation of the valve connection 130 and the housing 140, the upper support 122 is fixed again and the lower support 122 is released again. This state is shown in FIG. 5D.

Next, the stopper 151 is moved upward. At this time, the perforated portion of the main building 10 is a state in which airtightness is maintained to the outside by the housing 140. When the stopper 151 passes through the valve connecting portion 130, the valve connecting portion 130 is locked to maintain the airtightness to the outside of the main pipe 10. Next, the cylinder 150 including the stopper 151 and the housing 140 are dismantled (S170).

Next, for installation of the branch holder plug 170, the housing 140, which is coaxially aligned with the cylinder 150 to which the branch holder plug 170 is connected, not the stopper 151, is connected to the valve connecting unit 130. The ready state of this connection is shown in FIG. 5E.

After the housing 140 is connected to the valve connecting unit 130 to maintain the airtightness of the main pipe 10, the valve connecting unit 130 is unlocked and the branch holder plug 170 is installed in the branch holder 160.

Next, by disassembling the valve connection unit 130, the housing 140, the cylinder 150, and dismantle the pipe clamp 110 and the connecting support 120, all the inlet pipe demolition system 100 is dismantled (S180) Only the branch holder 160 and the branch holder plug 170 remain to maintain the sealing to the perforations of the main tube 10. This state of completion of work is shown in FIG. 5F.

Explanation of Working Principles and Effects According to the Invention

The conventional stopper device 40 as shown in FIG. 1B requires excavation of a large area, whereas the inlet pipe dismantling system 100 according to the present invention requires only excavation around the branch tee 20 to reduce the excavation area, thereby reducing construction cost. And the period is significantly reduced.

As a result of the implementation of the introduction pipe demolition system 100 according to the present invention, only one construction per day was possible with the conventional stopper device 40, but the introduction pipe demolition system 100 according to the present invention is 2 per day. Construction of the point was possible.

In addition, as shown in FIG. 1B, the conventional stopper device 40 requires work on the main pipe 10 such as a plurality of stopper fixing sockets, so that there is a risk of gas leakage. The work is made only at the branching tee 20, and there is no need for a separate fixing socket, and the pipe clamp 110 only fixes the main pipe 10 but does not need a fixed socket work directly on the main pipe 10. As a result, the risk of gas leakage is reduced and safe construction is possible.

In addition, as shown in FIG. 1B, the conventional stopper device 40 requires a long length of the bypass pipe 41, and thus the device price is high and there is a risk of gas leakage. However, the inlet pipe demolition system 100 according to the present invention is used. ) Does not require a separate bypass pipe (41) can be a safer and cheaper construction.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1A and 1B are schematic diagrams illustrating a drawing pipe removal method according to the prior art.

2 shows a drawing pipe demolition system according to the invention.

3 shows a plumbing clamp of an inlet pipe demolition system according to the invention.

4 shows a cylinder of the inlet pipe demolition system according to the invention.

5A to 5F are conceptual views illustrating the introduction pipe demolition method according to the present invention according to each step.

6 is a flowchart illustrating a drawing pipe removal method according to the present invention.

[Description of Main Reference Codes]

100: incoming pipe demolition system 110: pipe clamp

111: pipe upper clamp 112: pipe lower clamp

113: fastener 120: connection support

121: lower support 122: upper support

130: valve connection 140: housing

141: valve 150: cylinder

151: stopper 152: cylinder body

153: cylinder handle 155, 156: groove

160: branch holder 170: branch holder plug

Claims (9)

An entry pipe demolition system comprising a pipe clamp, a valve connection, a cylinder, and a housing in which the cylinder can move coaxially, The pipe clamp secures the inlet pipe demolition system to the main building, The lower portion of the valve connection portion may be connected to the branch tee between the main pipe and the inlet pipe and the upper portion of the valve connection portion is connected to the housing, The cylinder includes a stopper, the stopper is pressed into the perforations of the main tube to form an airtight structure between the branch tee and the main tube, The inlet pipe demolition system further includes a connection support, The connection support, An upper support connected to an upper side of the cylinder to align an axis of the cylinder; And Characterized in that the lower supporter is connected to the lower side of the cylinder, Inlet pipe demolition system. The method of claim 1, The inlet pipe demolition system further includes a branch holder and a branch holder plug, The branch holder is installed in the perforations of the main building, The branch holder plug is installed on the branch holder, characterized in that to maintain the main body in an airtight manner, Inlet pipe demolition system. The method of claim 2, A lower portion of the valve connection portion may be hermetically connected to the branch holder and the branch tee, and the valve connection portion may control whether fluid flows through the upper and lower portions of the valve connection portion. Inlet pipe demolition system. The method of claim 1, The pipe clamp is characterized in that consisting of a pipe upper clamp and a pipe lower clamp surrounding the main pipe, Inlet pipe demolition system. delete (a) installing an inlet pipe demolition system in the main building comprising a pipe clamp, a valve connection, a cylinder and a housing in which the cylinder can move coaxially; (b) entering the stopper of the cylinder into a branch tee between the main tube and the inlet tube and compressing the stopper such that the perforations of the main tube are hermetically sealed by the stopper; (c) removing the branch tee and the inlet pipe; (d) installing a branch holder in a position where the branch tee is removed from the main building; And (e) installing a branch holder plug on the branch holder, In step (a), (a1) connecting the upper support of the connecting support to the upper side of the cylinder to align the axis of the cylinder perpendicular to the main; In step (c), (c1) connecting the lower support of the connecting support to the lower side of the cylinder, and releasing the upper support from the cylinder, In step (e), (e1) characterized in that it comprises the step of dismantling the connection support after the installation of the branch holder plug, How to remove the entry pipe. The method of claim 6, Step (a) is, before step (a1), Installing the pipe clamp to the main pipe; And And installing the valve connection part, the housing, and the cylinder on the branch tee. How to remove the entry pipe. The method of claim 6, Step (c) is, before step (c1), And dismantling the valve tee and the housing connected to the branch tee. How to remove the entry pipe. The method according to any one of claims 6 to 8, In step (e), before step (e1), Installing the valve connecting portion and the housing on the branch holder; Removing the stopper and locking the valve connection; And Characterized in that it comprises the step of installing the branch holder plug, How to remove the entry pipe.

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