KR19980084660A - Branching Tee and Branching Method of Piping - Google Patents

Abstract

The present invention relates to a branch tee and a branching method of a pipe connecting a main pipe through which a fluid such as a gas, a chemical material, or water and sewage flows, and a branch pipe provided to a place requiring the fluid. The present invention relates to a branching tee and a branching method of a pipe in which the tee is horizontally installed so that the depth of the main pipe and the branch pipe is the same so that the branch pipe receives less vibration and load from the ground.

The present invention is welded to the T-shaped tube 20, the main tube (2) consisting of a horizontal tube (20a) is open at both ends and a vertical tube (20b) connected to the central upper portion of the horizontal tube (20a) It is welded to the upper end of the reinforcing plate 21, the vertical tube 20b of the T-type tube 20, welded to one end of the horizontal tube 20a of the T-type tube 20 The branched tee including the flange 22 formed therein and the plug 23 coupled to the flange 22 is used to connect the reinforcement plate 21 of the branched tee to the main pipe 2 at the point to be branched. Positioning and welding the peripheral edge of the reinforcing plate 21 and the main pipe (2), the person who is previously disposed of the same depth as the main pipe (2) at the other end of the horizontal pipe (20a) of the T-shaped pipe (20) The process of welding the engine 3, the process of installing the intermediate shut-off valve 4 in the flange 22, the process of installing the perforator 8 in the upper part of the intermediate shut-off valve 4, the intermediate shut-off valve 4 Opening After making the state, the step of lowering the angular head 8b of the perforator 8 and moving the top portion 9 toward the main tube to drill the main tube 2, the cut of the top portion 9 and the main tube 2 After moving the part to the angular head (8b) and raising the angular head (8b) into the body of the perforator (8), the process of removing the perforator (8) after closing the intermediate shut-off valve (4), the perforator (8) Remove the angular head (8b) from the drive shaft and connect the plug (8a) and the plug (23) fitted with the sealing ring (27) instead of installing the perforator (8) again to the intermediate shut-off valve (4) Process, screwing the plug 23 to the flange 22 by rotating the drive shaft with the intermediate shut-off valve 4 in the open state; raising the drive shaft of the punching machine 8 to connect the plug adapter 8a to the plug 23 ), Removing the perforator (8) from the intermediate shutoff valve (4), and removing the intermediate shutoff valve (4). It is characterized in that the pipe is branched by a process of removing from the range 22.

Description

Branching Tee and Branching Method of Piping

The present invention relates to a branch tee and a branching method of a pipe connecting a main pipe through which a fluid such as a gas, a chemical material, or water and sewage flows, and a branch pipe provided to a place requiring the fluid. The present invention relates to a branching tee and a branching method of a pipe in which the tee is horizontally installed so that the depth of the main pipe and the branch pipe is the same so that the branch pipe receives less vibration and load from the ground.

In recent years, most households use city gas for cooking, and most buildings and houses use city gas as fuel for heating. Gas pipes for supply are laid out like spider webs.

In addition, all residential areas are buried with water pipes as well as gas pipes. In addition, pipes for transporting chemicals are disposed in the manufacturing plant of chemicals.

The main pipe through which a fluid such as gas, a chemical material, or water and sewage flows, and a branch pipe provided to a place requiring the fluid by using a branch tee, are used to use the fluid at the place of use.

For example, if the fluid is a gas, in order to supply city gas from the main pipe to the building or house, which is the final place of use, in general, the branch pipe connecting the main pipe to the building and the house is first disposed and then the final work is performed. Connect main pipe and branch pipe using branching tee.

As described above, the conventional branch tee connecting the main pipe and the branch pipe is installed vertically with the branch tee 1 as shown in FIGS. 1 and 2 to connect the main pipe 2 and the branch pipe 3. It is. Therefore, the branch pipe 3 is located higher than the main pipe 2 to receive loads and vibrations from the ground, and the branch pipe 3 may be easily exposed during road repair, which may damage the branch pipe 3. .

In the case of gas pipes, the depth of burial is specified, and it is required to bury at depths of 1.2 m on roads of 8 m and above, 1.0 m on roads of 8 m and below, and 0.6 m on roads in residential complexes.

As shown in FIG. 2, the upper portion of the gas pipe is formed to form an auxiliary base layer made of sand, gravel, and the like, and a surface layer made of asphalt or the like.

Therefore, it is preferable that the main pipe 2 and the branch pipe 3 are buried at the same depth. However, since the branch pipe 1 is vertical, the branch pipe 3 has to be buried higher than the main pipe 2. .

Next, a structure and a branching method of a conventional vertical branching tee will be described.

3 and 4, the conventional vertical branching tee is welded to the lower portion of the T-shaped tube 11 and the T-shaped tube 11 having the branch pipe connection portion 11a formed therein. The reinforcement plate 12 which is the same as the outer diameter curvature of the main pipe 2, the flange 13 welded to the upper part of the said T-shaped pipe 11, and the female threaded line is formed in the center, in the center of the said flange 13 It consists of a plug 14 to be coupled, a cover 15 to be coupled to the flange 13, and a bolt 16 and a nut 17 to fasten the flange 13 and the cover 15.

The branching method of connecting the main pipe 2 and the branch pipe 3 using such a vertical branching tee is performed as follows.

(1) As shown in Figs. 1 and 5, the reinforcing plate 12 of the branch tee is vertically placed on the main pipe 2 and welded, and the branch pipe connecting portion 11a of the T-shaped pipe 11 is branched. Weld on (3).

(2) And after installing the intermediate shut-off valve (4) on the top of the flange 13, the perforator (8) is installed on the top of the intermediate shut-off valve (4).

(3) As shown in FIG. 5, the intermediate shutoff valve 4 is opened, and then the top portion 9 of the punching machine 8 is lowered toward the main pipe 2, and the top portion 9 is rotated to rotate the main portion. Drill the tube (2).

(4) The top portion 9 of the drilling machine 8 and the cut portion 10 of the main pipe 2 are pulled up into the drilling body. The perforator 8 is configured to pull up the cut portion 10 and the saw portion 9 together, but this is not related to the present invention, so a description thereof will be omitted.

(5) Close the intermediate shutoff valve (4) and remove the perforator (8) from the intermediate shutoff valve (4).

(6) Next, the plug adapter 8a as shown in FIG. 6 is connected to the perforator 8, and the plug 14 is connected to the plug adapter 8a to connect the perforator 8 again to the intermediate shutoff valve. Install in (4).

(7) After opening the intermediate shut-off valve (4), operate the perforator (8) to screw the plug (14) to the flange (13).

(8) After removing the perforator (8) and the intermediate shut-off valve (4) from the flange (13), using the bolt (16) and nut (17) to couple the cover (15) to the flange (13).

As described above, in the conventional vertical branching tee and the branching method using the branching tee, since the branching pipe 3 is located higher than the main pipe 2, the branching pipe 3 receives vibration and load from the ground. There is a concern that cracks may occur in the welded part, and the branch pipe 3 is easily exposed during road repair work, which may cause damage to the drilling equipment.

The present invention has been made in order to solve the above-mentioned problems of the prior art, so that the branching tee horizontally so that the branch pipe is located on the same horizontal plane as the main pipe so that vibration and load from the ground are less applied to the branch pipe. It is an object of the present invention to provide a branching tee and a branching method of pipes to prevent cracks in the welded portion and to prevent the branch pipes from being easily exposed during road repair work.

The branching tee of the pipe of the present invention for achieving the above object is a T-pipe consisting of a horizontal pipe with both ends open and a vertical pipe connected to the center upper portion of the horizontal pipe, the horizontal pipe of the T-shaped pipe A reinforcing plate welded to one end, a flange welded to the upper end of the vertical pipe of the T-shaped pipe is formed with a female thread line in the center, characterized in that it comprises a plug coupled to the flange.

The branching method of the pipe of the present invention for achieving the above another object is a step of placing the reinforcement plate of the branching tee on the main tube side surface of the branch to be branched and welding the circumferential edge of the reinforcement plate and the main pipe, the horizontal pipe of the T-type pipe The process of welding the branch pipe pre-exposed at the same depth as the main pipe at the other end, the process of installing the intermediate shutoff valve on the flange, the process of installing the perforator on the top of the intermediate shutoff valve, and the intermediate shutoff valve in the open state. Next, lower the angular head of the perforator and move the top to the main pipe to drill the main pipe, move the saw and the cut part of the main pipe to the angular head, and then raise the angular head into the perforated base body. The process of removing the perforator after closing it, removing the angular head from the drive shaft of the perforator and replacing the plug adapter and sealing The process of re-installing the perforator to the intermediate shut-off valve by connecting the warped plug, Rotating the drive shaft with the intermediate shut-off valve open, screwing the plug into the flange, Raising the drive shaft of the perforator up, and plug adapter from the plug Removing and removing the perforator from the intermediate cutoff valve, and removing the intermediate cutoff valve from the flange.

1 is a perspective view of a state in which a main pipe and a branch pipe are connected by using a conventional vertical branch tee,

2 is a state diagram showing a state in which the main pipe and the branch pipe connected by the conventional method are embedded in the ground;

3 is an exploded perspective view of a conventional vertical branching tee,

4 is a cross-sectional view showing a coupling state of a conventional branch tee,

5 is a cross-sectional view showing a state of drilling a main tube using a conventional branch tee,

6 is a perspective view of a plug adapter used to couple the plug with a plug which is a component of a conventional branch tee,

7 is a cross-sectional view showing a coupling state of the branching tee of an embodiment of the present invention;

8 is a cross-sectional view showing a state of puncturing the main tube using the branching tee of an embodiment of the present invention;

9 is a cross-sectional view showing a coupling state of the branching tee of another embodiment of the present invention;

10 is a cross-sectional view showing a state for branching using the branching tee shown in FIG. 9;

11 is a cross-sectional view showing a coupling state of the branching tee of another embodiment of the present invention.

Explanation of symbols for the main parts of the drawings

1: branch tee 2: main tube

3: branch pipe 4: intermediate shut-off valve

8: perforator

8a: plug adapter 8b: angular head

9: saw portion 10: cut portion

11: T type pipe 11a: branch pipe connection

12: reinforcement plate 13: flange

14 plug 15 cover

16: bolt 17: nut

20, 20 ': T-type tube 20a, 20a': horizontal tube

20b, 20b ': Vertical pipe 21, 21': Reinforcement plate

22: flange 22a: center part

22b: Edge 23, 23 ': Plug

24, 24 ', 24: cover 25: bolt

26: nut 27, 27 ': seal ring

28, 28 ': gasket 29: additional reinforcing plate

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

7 is a cross-sectional view showing a coupling state of the branching tee of an embodiment of the present invention, Figure 8 is a cross-sectional view showing a state of drilling a main tube using a branching tee of an embodiment of the present invention.

As shown, the branching tee of the embodiment of the present invention is a T-shaped tube 20 consisting of a horizontal tube 20a having both ends opened and a vertical tube 20b connected to an upper portion of the center of the horizontal tube 20a. ), A reinforcing plate 21 welded to one end of the horizontal tube 20a of the T-type tube 20, and a vertical tube 20b of the T-type tube 20, which is welded to the main tube 2. It is welded to the upper end of the flange 22 is formed with a female thread in the center, and includes a plug 23 coupled to the flange 22.

In addition, the branch tee of the present invention is provided with a cover 24 to be fastened to the flange 22 by a bolt 25 and a nut 26.

In order to maintain airtightness, a seal ring 27 is fitted between the plug 23 and the flange 22, and a gasket 28 is fitted between the cover 24 and the flange 22.

In addition, it is preferable to weld the additional reinforcing plate 29 on the opposite side of the reinforcing plate 21 in order to more reliably reinforce the main pipe (2) that has been perforated.

As shown in FIG. 10, the flange 22 is screwed to an outer surface of the central portion 22a having a male screw thread to which the plug 23 is screwed and a male thread line on an outer side thereof, and an outer surface of the central portion 22a. It can be configured by separating the edge portion 22b.

In this case, as shown in FIG. 9, after the branching operation is completed, the edge portion 22b is removed, and instead, the cover 24 ′ having a female threaded line is engaged to reduce the overall size. Even in this case, it is preferable to use the sealing ring 27 and the gasket 28 in order to maintain airtightness.

In addition, the reinforcing plate 21 is extended to the opposite side of the main tube 2 so that the lower end is easy to weld. Therefore, when welding the reinforcing plate 21 is not welded from the bottom of the main pipe 2, the welding is easy.

Another embodiment of the present invention is a branch tee used when the diameter of the pipe is relatively short, the pressure of the flowing fluid is relatively low, and the main pipe 2 and the branch pipe 3 are made of plastic. The branching tee of this embodiment is made of plastic.

As shown in Fig. 11, the branching tee is connected to a horizontal tube 20a 'having both ends opened and a center upper portion of the horizontal tube 20a'. The heat-sealed T-shaped tube 20 'made of the formed vertical tube 20b' and the main tube 2 are heat-sealed at one end of the horizontal tube 20a 'of the T-shaped tube 20'. Reinforcement plate 21 ', plug 23' screwed into the upper end of vertical pipe 20b 'of T-shaped pipe 20', and vertical pipe 20b of T-shaped pipe 20 '. And a cover 24 that is screwed to the outside of the top of the ').

Also in this embodiment, the sealing ring 27 'is inserted between the plug 23' and the vertical tube 20b 'of the T-shaped tube 20' to maintain airtightness, and the cover 24 and the T-shaped tube are inserted. A gasket 28 'is sandwiched between the vertical tubes 20b' of the 20 '.

Next, the branching method of this invention which connects the main pipe 2 and the branch pipe 3 using the branching tee of this invention comprised as mentioned above is demonstrated.

First, a method of using the branch tee shown in FIG. 7 will be described.

Position the reinforcement plate 21 of the branch tee on the side of the main tube 2 at the point to be branched, weld the circumferential edge of the reinforcement plate 21 and the main tube 2, and the horizontal tube of the T-shaped tube 20 ( The other end of 20a and the branch pipe 3 previously arrange | positioned on the same horizontal plane as the main pipe 2 are welded.

Then, the intermediate shutoff valve 4 as shown in FIG. 8 is installed on the flange 22 and the perforator 8 is installed on the intermediate shutoff valve 4.

An angular head 8b is connected to the drive shaft of the perforator 8, and a top portion 9 is provided on the output shaft of the angular head 8b.

The angular head 8b is a mechanism that is already known to rotate after receiving a rotational force from the drive shaft of the drilling machine 8 and extending the output shaft in the axial direction (horizontal direction). For example, the angular head (model number BT40-AH12-150 or BT50-AH25-200) of Kuroda Precision Industries, Ltd. can be used.

Subsequently, the intermediate shut-off valve 4 is opened, and then the angular head 8b of the perforator 8 is lowered and the drive shaft is rotated to move the saw portion 9 toward the main pipe 2 and rotate at the same time. Drill 2).

Then, the drive shaft is rotated in the opposite direction to move the cut portions of the saw portion 9 and the main pipe 2 toward the angular head 8b, and then the angular head 8b is pulled up into the perforator 8 body.

Next, after the intermediate shut-off valve 4 is closed, the perforator 8 is removed, the angular head 8b is removed from the drive shaft of the perforator 8, and the plug adapter 8a is inserted instead. The plug 23 in which the seal ring 27 is fitted is connected to the 8a, and the perforator 8 is again installed in the intermediate shutoff valve 4.

Then, with the intermediate shut-off valve 4 open, the drive shaft of the perforator 8 is rotated to screw the plug 23 into the flange 22, and then the drive shaft of the perforator 8 is lifted up to plug the plug adapter 8a. Remove from (23) and remove the perforator (8) from the intermediate shut-off valve (4) and then remove the intermediate shut-off valve (4) from the flange (22).

The connection of the main pipe 2 and the branch pipe 3 can be completed in this state alone, but in order to ensure more airtightness, the lid 24 of the flange 22 is secured by using the bolt 25 and the nut 26. The gasket 28 is placed between the cover 24 and the flange 22.

And in order to reliably reinforce the main pipe 2, the additional reinforcing plate 29 is welded to the opposite side of the reinforcing plate 21.

Such a state is a state shown in FIG.

9 and 10, as described above, the plug 23 is screwed into the center portion 22a of the flange 22, and the edge portion after removing the intermediate shutoff valve 4 and the perforator 8 is removed. (22b) is removed from the center portion 22a.

Then, the cover 24 'is screwed into the center portion 22a. At this time, the gasket 28 is preferably placed in order to ensure the airtightness between the central portion 22a and the lid 24 '.

In the case of the embodiment shown in Figure 11, because the diameter of the main pipe (2) and branch pipe (3) is small and the pressure of the fluid is low, even if some fluid leaks because the amount is not so much use the intermediate shut-off valve (4) I never do that. That is, after drilling the main pipe 2 using the above-described puncher 8 and the angular head 8b, the plug 23 'into which the seal ring 27' is fitted is inserted into the number of T-type pipes 20 '. Screw into the inside of the straight pipe (20b ').

Then, the gasket 28 'is placed to screw the cover 24 to the outside of the vertical pipe 20b' of the T-shaped pipe 20 '.

As described above, the branching tee and the branching method of the pipe of the present invention allow the branch pipe 3 to be positioned on the same horizontal plane as the main pipe 2, so that the branch pipe 3 is separated from the ground by a predetermined distance, and is grounded by a car or the like. Since the vibration and the load is less applied to the branch pipe (3), thereby preventing cracks in the welded portion, and also has the effect that the branch pipe (3) is not easily exposed during road repair work.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

Claims (5)

In the branch tee of piping connecting the main pipe and the branch pipe, T-shaped tube 20 consisting of a horizontal tube 20a having both ends opened and a vertical tube 20b connected to an upper portion of the center of the horizontal tube 20a, The reinforcement plate 21 which is welded to the side of the main pipe 2 and welded to one end of the horizontal pipe 20a of the T-shaped pipe 20, A flange 22 welded to the upper end of the vertical pipe 20b of the T-shaped pipe 20 and having a female thread in the center; Branch tee of the pipe, characterized in that it comprises a plug (23) coupled to the flange (22). 2. The flange (22) according to claim 1, wherein the flange (22) has a female threaded line to which the plug (23) is screwed and a central portion (22a) having a male threaded line formed on an outer side thereof, and an edge screwed to an outer surface of the central portion (22a). Branch tee of piping characterized by consisting of a part 22b. The branching pipe according to claim 1, wherein the reinforcing plate (21) has a lower end extending to the opposite side of the main pipe (2) to facilitate welding. T-shaped tube made of plastic made of a horizontal tube 20a 'having both ends opened and a vertical tube 20b' each of which has a screw thread formed on the inner surface of the upper side and connected to a central upper portion of the horizontal tube 20a '. (20 '), Reinforcement plate 21 'of plastic material which is heat-sealed to the main pipe 2 and is heat-sealed at one end of the horizontal pipe 20a' of the T-shaped pipe 20 ', A plug 23 'screwed into an upper end of a vertical pipe 20b' of the T-shaped pipe 20 ', and Branch tee of the pipe, characterized in that it comprises a cover (24) screwed to the outside of the upper end of the vertical pipe (20b ') of the T-shaped pipe (20'). Positioning the reinforcement plate 21 of the branch tee on the side of the main pipe (2) at the point to be branched and welding the peripheral edge of the reinforcement plate 21 and the main pipe (2), Welding the branch pipe (3) previously disposed at the same depth as the main pipe (2) to the other end of the horizontal pipe (20a) of the T-shaped pipe (20), Installing the intermediate shut-off valve 4 on the flange 22, Installing perforator 8 on top of intermediate shut-off valve 4, Opening the intermediate shut-off valve 4 and then lowering the angular head 8b of the perforator 8 and moving the top portion 9 toward the main pipe to drill the main pipe 2; Moving the cut portions of the top portion 9 and the main tube 2 toward the angular head 8b and then raising the angular head 8b into the perforator 8 body; Removing the perforator 8 after closing the intermediate shut-off valve 4, Remove the angular head 8b from the drive shaft of the perforator 8 and connect the plug 23 with the plug adapter 8a and the sealing 27 instead to return the perforator 8 to the intermediate shut-off valve 4 again. Re-installation process, Screwing the plug 23 to the flange 22 by rotating the drive shaft with the intermediate shut-off valve 4 open; Removing the plug adapter 8a from the plug 23 by lifting the drive shaft of the puncher 8 upward and removing the puncher 8 from the intermediate shut-off valve 4, and A method of branching a pipe comprising the step of removing the intermediate shut-off valve (4) from the flange (22).