KR102037522B1 - Universal Connecting Pipe Assembly - Google Patents

Abstract

The present invention, a universal connection pipe assembly for connecting the fluid inlet pipe and the outflow pipe which protrudes outward and the inlet pipe or outlet pipe of the valve chamber to the fluid transport external pipe disposed outside the valve chamber As relates to, one side is connected to any one of the inlet pipe or the outlet pipe valve chamber connecting pipe; A universal pipe body having one end coupled to the other side of the valve chamber connecting pipe in an arbitrary direction within a predetermined angle range, and coupled to be watertight with respect to the outside and in communication with the valve chamber connecting pipe; One side is connected to the external pipe for transporting the fluid, the other side is coupled to be oriented in any direction within the predetermined angle range with the other end of the universal pipe body, is coupled to be watertightly relative to the outside, the universal pipe body It consists of; external pipe connection pipe in communication with.

Description

Universal Connecting Pipe Assembly

The present invention relates to a connection pipe assembly, and more particularly, to a connection pipe assembly for connecting between an inlet pipe and an outlet pipe of a valve chamber buried underground and an external pipe for fluid transfer outside the valve chamber.

Many types of pipes are buried in the ground below the city's roads, including water and sewage pipes. In particular, in the case of water supply and sewage pipelines, they are not buried in the ground with only the pipes connected and connected continuously. It is easy to interrupt the fluid.

In order to maintain the auxiliary equipment or adjust the flow rate through the operation of the valve, an auxiliary equipment such as a valve is installed inside the manhole and a manhole is installed on the ground to allow the worker to enter the ground and perform maintenance. The structure that forms the space to make is the valve chamber.

The valve chamber includes an inner space in which a manhole is provided on the upper side while facilities such as a valve are installed, and a fluid inlet pipe and an outlet pipe for connecting external pipes such as water and sewage pipes outside the valve room to the valve inside the valve room. It is provided on one side and the other side of the valve chamber side. An example of such a valve chamber is disclosed by Unexamined-Japanese-Patent No. 10-2014-0130978 (patent document 1).

When connecting the fluid inlet and outlet pipes provided on the side of the valve chamber with external pipes such as water and sewage pipes disposed outside the valve chamber, in many cases, the centers of both pipes do not coincide, which makes it difficult to connect the two pipes stably. There are many cases. In case of forcibly constructing both pipes that do not coincide with the center, excessive bending load is applied to a part of the pipe, which shortens the service life of the pipe and there is also little concern about damage to the pipe.

In order to solve such a mismatch of both pipes, a universal joint for pipes has been developed, and an example thereof is disclosed in Korean Patent Laid-Open Publication No. 10-2009-0007513 (Patent Document 2).

The universal joint for pipes of Patent Literature 2 is joined to one side end of the pipe to communicate with each other, the coupling portion has a hemispherical shape with a hollow inside and a fastening portion formed outside; An insertion part of which one end is inserted and coupled to the coupling part 10 such that one side end thereof is rotatable in contact with the inner circumference of the coupling part; And an escape prevention part preventing the insertion part inserted and fastened into the fastening part so as to be in contact with the insertion part outer circumference.

The universal joint for pipes of the patent document 2 can be connected without being restricted by pipe joints by rotating the inserting part, and does not need to be excavated or compacted again, and can easily perform joint work regardless of the terrain. It is simple in structure and can be installed without the need for additional parts such as elbows, so it is easy to work and economical.

However, the universal joint for pipes of the patent document 2, in place of the elbows produced only at a predetermined angle standard, such as 45 degrees, 90 degrees, should be connected to the inlet and outlet pipes of the valve chamber at other angles. This is to connect the external pipe to the valve chamber without fear of damage or leakage.

That is, if the inlet pipe or outlet pipe of the valve chamber and the outer pipe outside the valve chamber are arranged substantially parallel to each other, but are installed so that their mutual centers are inconsistent, there is a problem that connection is difficult with the universal joint for pipes of Patent Literature 2. .

Korean Laid-Open Patent Publication No. 10-2014-0130978 (Nov. 12, 2014) "Valve seal reinforced with piping joints" Publication No. 10-2009-0007513 (published Jan. 19, 2009) "Universal joint for pipes"

The present invention is to solve the above problems, an object of the present invention is to be arranged approximately parallel to each other but the watertight coupling of the inlet pipe or outlet pipe of the valve chamber and the external piping outside the valve chamber is installed so that the mutual center is inconsistent. It is to provide a universal connecting pipe assembly.

It is another object of the present invention to provide a universal connecting pipe assembly which allows the watertight coupling to be maintained in any situation, such as the formation of a great angle of bending.

In order to achieve the above object, a valve chamber having a fluid inlet pipe and an outlet pipe protruding outward and the external pipe for fluid transfer disposed outside the valve chamber to the inlet pipe or outlet pipe of the valve chamber. Universal connecting pipe assembly according to the invention, the valve pipe connection pipe for one side is connected to any one of the inlet pipe or outlet pipe; A universal pipe body having one end coupled to the other side of the valve chamber connecting pipe in an arbitrary direction within a predetermined angle range, and coupled to be watertight with respect to the outside and in communication with the valve chamber connecting pipe; And one side connected to the external pipe for transporting the fluid, and the other side coupled to the other end of the universal pipe body so as to be oriented in an arbitrary direction within a predetermined angle range, and to be watertightly coupled to the outside. It comprises a; external pipe connection pipe in communication with the main body.

At this time, both ends of the universal pipe body has a distal end and a spaced apart end of the position spaced inwardly by a predetermined distance from the distal end, the pipe portion between the distal end and the spaced end is formed to extend radially outward, The expanded pipe portion between the distal end and the spaced end is shaped to form part of a virtual first hollow sphere, the maximum diameter of the expanded pipe portion being provided to match the diameter of the first hollow sphere. Can be.

Further, the valve chamber connecting pipe or the external pipe connecting pipe has a hollow cylindrical connecting pipe body on one side, and on the other side concentric with the first hollow sphere to surround the outer surface of the first hollow sphere. To form a part of the virtual second hollow sphere coupled to the first hollow sphere may be provided with an angle control unit is inseparably coupled to the first hollow sphere.

In addition, the angle adjusting portion, the watertight forming portion located closer to the connecting pipe body at the maximum diameter portion of the second hollow sphere; and is located on the opposite side of the watertight forming portion at the maximum diameter portion of the second hollow sphere, And a watertight reinforcing portion spaced apart from the watertight forming portion, wherein the watertight forming portion extends from the second hollow sphere toward the radially outer side of the connection pipe body and includes a plurality of first through holes. The coupling flange provided therein, the watertight packing mounting portion formed recessed in the radially inner side of the coupling flange portion, and the watertight packing mounting portion is mounted on and in close contact with the expanded pipe portion between the angle control unit and the expanded pipe portion Watertight packing to form a watertight bond in the, wherein the watertight reinforcement portion of the connecting pipe body from the second hollow sphere Is formed in a disk ring-shaped main packing presser extending in the radially outward direction and provided with a plurality of second through holes, the auxiliary packing presser mounting portion recessed in the radially inner side of the main packing press; And an auxiliary packing presser mounted on the auxiliary packing presser mounting unit and pressing the watertight packing so as to be in close contact with the watertight packing, wherein the watertight forming part and the watertight reinforcing part pass through the first through hole and the second through hole. It can be tightly coupled to each other by a plurality of bolts and nuts to be assembled, whereby the auxiliary packing presser pressed against the watertight packing by pressing the watertight packing, the watertight packing pressed by the auxiliary packing presser is the expanded pipe It may be in close contact with the portion to form a watertight coupling between the angle adjusting portion and the expanded pipe portion.

Furthermore, the main packing presser may further include a plurality of tab holes formed through the auxiliary packing presser mounting portion, and a packing pressure bolt coupled to the tab holes to press the auxiliary packing presser toward the watertight packing. .

According to the universal connection pipe assembly according to the present invention as described above, there is an excellent effect that it is possible to easily form a tight watertight coupling between the valve chamber outflow pipe / inlet pipe and the outer pipe of the valve chamber outside the center does not match. .

In addition, even if the pipes on both sides of the universal connecting pipe assembly according to the present invention is not the center does not coincide with each other and are not arranged in parallel with each other, there is an excellent effect that can be connected to both pipes to form a watertight. .

In addition, there is an excellent effect that the bending angle of the universal connection pipe connection portion is formed to be considerably large, or that a rigid watertight bond can be formed even when the surface processing precision of the connection portion is rather low.

1 is a plan view (A) and a side view (B) showing a valve chamber in which a valve chamber pipe is connected to a valve chamber outer external pipe by a universal connecting pipe assembly according to the present invention.
Figure 2 is a cross-sectional view showing a universal connecting pipe assembly according to the present invention.
3 is a partially enlarged view of a portion A of FIG. 2.
Figure 4 is a cross-sectional view (A) and front view (B) showing the main packing presser of the universal connecting pipe assembly according to the present invention.
5 is a cross-sectional view illustrating various embodiments of a valve chamber connection pipe or an external pipeline connection pipe connected to a valve chamber pipe or a valve chamber outer external pipe.
Figure 6 is a cross-sectional view showing an embodiment of various angle adjustment shape of the universal connecting pipe assembly according to the present invention.

Hereinafter, the universal connecting pipe assembly according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view (A) and a side view (B) showing a valve chamber in which a valve chamber pipe is connected to a valve chamber outer external pipe by a universal connecting pipe assembly according to the present invention.

One side of the universal connection pipe assembly 100 according to the present invention is formed to protrude to opposite sides of the outside of the valve chamber 10, respectively, in communication with the interior of the valve chamber 10 or inside the valve chamber 10 It is connected to the fluid inlet pipe 13 and the outlet pipe 15 which is directly connected to the inlet / outlet port of the valve (not shown) installed in.

The other side of the universal connection pipe assembly 100 is connected to an external pipe 20 for fluid transfer installed outside the valve chamber 10. In the illustrated embodiment, the outer pipe 20 is arranged in parallel with the inlet pipe 13 and the outlet pipe 15 of the valve chamber 10, but the center is provided to be offset from each other, nevertheless in the present invention It may be connected to the inlet pipe 13 and the outlet pipe 15 by the universal connection pipe assembly 100 according to.

The connection between the universal connection pipe assembly 100 and the inlet / outlet pipes 13 and 15, or the connection between the universal connection pipe assembly 100 and the external pipe 20 according to the present invention may be made in various ways. 1, a connection by KP junction method is shown as an example. Other connection methods will be described later.

Figure 2 is a cross-sectional view showing a universal connecting pipe assembly according to the present invention, Figure 3 is a partially enlarged view of a portion A of Figure 2, Figure 4 is a cross-sectional view showing the main packing presser of the universal connecting pipe assembly according to the present invention. (A) and a front view (B).

The universal connection pipe assembly 100 according to the present invention is a valve chamber connection pipe 300 connected to the universal pipe body 200, the inlet pipe 13 and the outlet pipe 15 of the valve chamber 10 located in the center, And it consists of an external pipe connection pipe 400 connected to the external pipe (20). The valve chamber connection pipe 300 and the external pipe connection pipe 400 are respectively coupled to one end 230 and the other end 250 of the universal pipe body 200.

The valve chamber connection pipe 300 is provided with a hollow cylindrical connection pipe body 310 on one side, the other side is provided with an angle adjuster 330. The outer pipe connection pipe 400 is also provided with a hollow cylindrical connection pipe body 410 on one side, the other side is provided with an angle adjusting unit 430.

The universal pipe body 200 is coupled to communicate with the valve chamber connecting pipe 300, while the one end 230 of the universal pipe body 200 has a predetermined angle with the other side of the valve chamber connecting pipe 300. It is coupled so as to be oriented in any direction within the range, and also so as to be watertight with respect to the outside.

Similarly, the universal pipe body 200 is coupled to communicate with the outer pipe connecting pipe 400, while the other end 250 of the universal pipe body 200 and the other side of the outer pipe connecting pipe 400 It is coupled so as to be oriented in any direction within a predetermined angular range, and also to be watertight with respect to the outside.

The predetermined angle range is a three-dimensional angle in the three-dimensional space in which the valve chamber connecting pipe 300 or the external pipe connecting pipe 400 can be rotated while maintaining a mechanical and geometric coupling and watertight coupling with the universal pipe body 200 Refers to a range.

The universal pipe body 200 is formed in a hollow cylindrical pipe shape as a whole, end portions 233 and 253 at both ends, and spaced apart ends 235 at positions spaced inwardly by a predetermined distance from the end portions 233 and 253. 255). The universal pipe body 200 is formed by extending pipe portions 234, 254 radially outwardly between the distal ends 233, 253 and the spaced ends 235, 255.

Specifically, the expanded pipe portions 234, 254 between the distal ends 233, 253 and the spaced ends 235, 255 are shaped to form part of a virtual first hollow sphere (not shown). Is done. At this time, the maximum diameter of the expanded pipe portion 234, 254 is provided to match the diameter of the first hollow sphere. That is, the expanded pipe parts 234 and 254 are formed in a shape that is smaller in diameter toward the both ends toward the maximum diameter at one side of the middle portion rather than both ends.

The hollow cylindrical connection pipe body 310 provided at one side of the valve chamber connection pipe 300 is connected to the inlet pipe 13 or the outlet pipe 15. The angle adjusting part 330 provided on the other side of the valve chamber connection pipe 300 is coupled to the first hollow sphere to be concentric with the first hollow sphere. In detail, the angle adjusting part 330 surrounds an outer surface of the first hollow sphere inseparably from the first hollow sphere to form a combined second hollow sphere (not shown). It is formed to constitute a part.

The hollow cylindrical connection pipe body 410 provided on one side of the external pipe connection pipe 400 is connected to the external pipe 20 for fluid transfer. The angle adjusting part 430 provided on the other side of the outer pipe connecting pipe 400 is coupled to the first hollow sphere to form a concentric with the first hollow sphere. Specifically, the angle adjusting unit 430 of the imaginary second hollow sphere (not shown) formed to be coupled to the first hollow sphere to surround the outer surface of the first hollow sphere inseparable from the first hollow sphere. It is formed to constitute a part.

Looking in more detail with respect to the angle adjuster (330, 430) with reference to Figure 3, the angle adjuster (330, 430) is further connected to the connecting pipe body (310, 410) at the maximum diameter of the second hollow sphere And a watertight reinforcing portion 510 positioned close to each other, and a watertight reinforcing portion 530 positioned opposite to the watertight forming portion 510 at the largest diameter portion of the second hollow sphere. The watertight reinforcing portion 530 is spaced apart from the watertight forming portion 510 by a predetermined distance.

The watertight forming unit 510 includes a coupling flange 511, a watertight packing mounting unit 515, and a watertight packing 517. The coupling flange portion 511 extends from the second hollow sphere toward the radially outer side of the connection pipe bodies 310 and 410 and includes a plurality of first through holes 513. The watertight packing mounting portion 515 is formed to be recessed in the radially inner side of the coupling flange 511. The watertight packing mounting portion 515 is equipped with the watertight packing 517 and the watertight packing 517 is in close contact with the outer surface of the first hollow sphere, that is, the expanded pipe portion 234, 254 to adjust the angle A watertight bond is formed between the portions 330 and 430 and the expanded pipe portions 234 and 254. The watertight packing 517 may be, for example, an O-ring, but is not limited thereto.

The watertight reinforcement part 530 includes a main packing presser 531, an auxiliary packing presser mounting part 537, and an auxiliary packing presser 539. The main packing presser 531 is a disk-shaped member which extends from the second hollow sphere toward the radially outer side of the connecting pipe bodies 310 and 410, and a plurality of second through holes 533 are formed. have. The auxiliary packing presser mounting portion 537 is formed to be recessed in the radially inner side of the main packing presser 531. The auxiliary packing presser 539 is formed in a disc shape, and is mounted on the auxiliary packing presser mounting part 537, and presses the watertight packing 517, resulting in close contact with the watertight packing 517.

In order for the auxiliary packing presser 539 to be in close contact with the watertight packing 517 by pressing the watertight packing 517, the watertight forming part 510 and the watertight reinforcing part 530 are formed in the first through hole ( 513 and a plurality of bolts 541 and nuts 543 which are assembled through the second through hole 533 is in close contact with each other.

The watertight reinforcing portion 530 formed to form part of the second hollow sphere is opposite to the watertight forming portion 510 at the largest diameter portion of the second hollow sphere, that is, the connecting pipe bodies 310 and 410. Since it is located farther away from the watertight reinforcement portion 530 is coupled to the watertight forming portion 510 is not coupled to the expanded pipe portion 234, 254 of the universal pipe body 200. Do. Since the minimum inner diameter of the main packing presser 531 is smaller than the maximum outer diameter of the expanded pipe portions 234 and 254 of the universal pipe body 200, the pipe portion extended from the outside of the universal pipe body 200 ( 234, 254 is impossible to insert.

Accordingly, in order to enable the watertight forming portion 510 and the watertight reinforcing portion 530 to be coupled, the watertight forming portion 510 first includes the expanded pipe portions 234 and 254 of the universal pipe body 200. The watertight reinforcing part 530 is preferably configured to be coupled to the watertight forming part 510 after being coupled to the watertight. To this end, the main packing presser 531 of the watertight reinforcing portion 530 is formed by dividing into two as shown in FIG. Thus, the watertight forming portion 510 may be coupled to the watertight reinforcing portion 510 after the first coupling to the expanded pipe portions 234 and 254.

As such, the watertight packing 517 pressed by the auxiliary packing presser 539 is in close contact with the outer surface of the expanded pipe part 234, 254, and the angle adjusting part 330, 430 and the expanded pipe. A tight watertight bond is formed between the outer surfaces of the portions 234, 254.

That is, according to the universal connecting pipe assembly 100 according to the present invention configured as described above, easily between the valve chamber outflow pipe / inlet pipe (13, 15) and the outer pipe 20 of the valve chamber outside the center does not match It is possible to form a tight watertight bond.

However, if the surface precision of the rotary connection portion of the universal connecting pipe assembly 100, that is, the expanded pipe portion 234, 254 or the angle adjusting portion 330, 430 is rather low, a rigid watertight coupling is not made and the interior May leak fluid. In particular, when the surface of the expanded pipe portion 234, 254 or the edge of the angle adjuster (330, 430) is somewhat insufficient, the bending angle of the rotary connection of the universal connection pipe assembly 100 is a certain angle In the case of the following, a rigid watertight coupling is made, but when the bending angle of the rotary connection portion of the universal connection pipe assembly 100 is significantly larger than a predetermined angle, the watertightness may be partially degraded and lead to leakage of the internal fluid.

In order to compensate for this problem, the main packing presser 531 of the universal connecting pipe assembly 100 according to the present invention, a plurality of tap holes formed through the auxiliary packing presser mounting surface of the auxiliary packing presser mounting portion 537 ( 535) (see FIG. 3A), and the auxiliary packing presser 539 further pressurizes the watertight packing 517 by screwing into the tap hole 535 to press the auxiliary packing presser 539. It may be to further include a packing pressure bolt 545 (see Fig. 3 (B)). As a result, the watertight packing 517 is further pressurized by the packing pressure bolt 545, so that the watertight packing 517 of the angle adjusting part 330, 430 is connected to the expanded pipe part 234, 254. It is possible to form a more tight watertight bond between the.

Hereinafter, a connection method between the universal connection pipe assembly 100 and the inflow / outflow pipes 13 and 15 or the connection method between the universal connection pipe assembly 100 and the external pipe 20 according to the present invention. Explain.

5 is a cross-sectional view illustrating various embodiments of a valve chamber connection pipe or an external pipeline connection pipe connected to a valve chamber pipe or a valve chamber outer external pipe.

The valve chamber connection pipe 310 or the external pipe connection pipe 410 shown in FIG. 5 is KP welded pipe type (see FIG. 5 (A)), general type (see FIG. 5 (B)), flange type (FIG. 5 (C) ), A flexible tube (see Fig. 5 (D)) and the like.

When the valve chamber connecting pipe 310 or the external pipe connecting pipe 410 is formed in a KP joint pipe type, the inlet / outlet pipes 13 and 15 and the external pipe 20 of the valve chamber are simply hollow cylindrical without special processing. It may be formed of a pipe of, and may be connected to the valve chamber connecting pipe 310 or the external pipe connecting pipe 410 by itself.

On the contrary, when the inlet / outlet pipes 13 and 15 and the outer pipe 20 of the valve chamber are formed in the KP joint pipe type, the valve chamber connecting pipe 310 or the external pipe connecting pipe 410 may be formed in a general type. .

The flange type is the type widely used in conventional pipe connections, and the pipe connection is the same as the flange type except that the flexible pipe type also includes a flexible pipe structure.

On the other hand, even if the pipes on both sides of the universal connecting pipe assembly 100 according to the present invention not only do not coincide with each other center but also arranged in parallel to each other, the universal connecting pipe assembly 100 according to the present invention These can be connected so that a watertight bond is formed between the two pipes.

Figure 6 is a cross-sectional view showing an embodiment of various angle adjustment shape of the universal connecting pipe assembly according to the present invention.

As shown in the figure, the valve chamber connecting pipe 300 and the external pipe connecting pipe 400 may be freely set in any direction and angle with respect to the universal pipe body 200 within a predetermined angle range. Therefore, the site or angle between the valve chamber connection pipe 300 and the inlet / outlet pipes (13, 15), or between the external pipe connection pipe 400 and the external pipe 20 is difficult to be easily coupled to various sites It is possible to easily connect the pipes in the situation and to form a watertight bond.

The embodiments of the universal connection pipe assembly according to the present invention have been described in detail with reference to the accompanying drawings, which are illustrative and should not be construed as limiting the scope of the present invention. It should be noted that the description is made by the description of the scope.

10: valve chamber 13: inlet pipe
15: Outflow piping 20: External piping
100: universal connecting pipe assembly
200: universal pipe body 230: one end
250: other end 233, 253: end
234, 254: expanded pipe part 235, 255: spaced end
300: valve chamber connection pipe 310: connection pipe body
330: angle control unit 400: external pipe connection pipe
410: connecting pipe body 430: angle adjustment unit
510: watertight forming portion 511: coupling flange
513: first through hole 515: watertight packing mounting portion
517: watertight packing 530: watertight reinforcement part
531: main packing press 533: second through hole
535: tap hole 537: auxiliary packing presser mounting portion
539: secondary packing presser 541: bolt
543: Nut 545: Packing bolt

Claims (5)

A connecting pipe assembly for connecting a fluid chamber provided with a fluid inlet pipe and an outlet pipe protruding outward and an external pipe for transporting a fluid disposed outside the valve chamber to the inlet pipe or the outlet pipe of the valve room.
A valve chamber connection pipe having one side connected to any one of the inlet pipe and the outlet pipe;
A universal pipe body having one end coupled to the other side of the valve chamber connecting pipe in an arbitrary direction within a predetermined angle range, coupled to be watertight with respect to the outside, and in communication with the valve chamber connecting pipe; And
One side is connected to the external pipe for transporting the fluid, the other side is coupled to be oriented in any direction within the predetermined angle range with the other end of the universal pipe body, is coupled to be watertight with respect to the outside, the universal pipe body An external pipe connection pipe in communication with the;
It is made, including
Both ends of the universal pipe body has a distal end and a spaced apart end of the position spaced inwardly from the distal end by a predetermined distance, the pipe portion between the distal end and the spaced end is formed extending radially outward, the distal end And the expanded pipe portion between the spaced end and is shaped to form part of a virtual first hollow sphere, the maximum diameter of the expanded pipe portion being provided to match the diameter of the first hollow sphere,
The valve chamber connection pipe or the external pipe connection pipe may include a hollow cylindrical connection pipe body on one side thereof, and on the other side of the valve chamber connection pipe to concentric with the first hollow sphere to surround the outer surface of the first hollow sphere. It is formed to form a part of the virtual second hollow sphere coupled with the first hollow sphere, and having an angle adjustment portion is inseparably coupled to the first hollow sphere,
The angle adjusting portion: a watertight forming portion located closer to the connecting pipe body at the maximum diameter portion of the second hollow sphere; and located on the opposite side of the watertight forming portion at the maximum diameter portion of the second hollow sphere, Containing; watertight reinforcement portion spaced apart from the watertight forming portion
The watertight forming portion is formed to extend from the second hollow sphere toward the radially outer side of the connecting pipe body, the coupling flange portion having a plurality of first through holes, recessed in the radially inner side of the coupling flange portion A watertight packing mounting part, and a watertight packing mounted to the watertight packing mounting part and in close contact with the expanded pipe part to form a watertight coupling between the angle adjusting part and the expanded pipe part,
The watertight reinforcement portion is formed to extend from the second hollow sphere toward the radially outer side of the connecting pipe main body, and has a plurality of second through-holes of the disc-shaped main packing presser, the radially inner side of the main packing presser. The auxiliary packing presser mounting portion formed recessed in, and formed in a disc ring, the auxiliary packing presser mounting portion, and the auxiliary packing presser for pressing the watertight packing so as to be in close contact with the watertight packing,
The watertight forming portion and the watertight reinforcing portion may be tightly coupled to each other by a plurality of bolts and nuts assembled through the first through hole and the second through hole, whereby the auxiliary packing presser presses the watertight packing. The watertight packing closely adhered to the watertight packing, and the watertight packing pressed by the auxiliary packing presser is in close contact with the expanded pipe part to form a watertight coupling between the angle adjusting part and the expanded pipe part,
The main packing presser further comprises a plurality of tab holes formed through the auxiliary packing presser mounting portion, and a packing pressing bolt which is coupled to the tab holes to press the auxiliary packing presser toward the watertight packing. Universal connecting pipe assembly.



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