KR20160000717A - Watertight device - Google Patents

Abstract

The present invention relates to a watertight sealing device for a portion of a pipeline connected to a wall of a structure which facilitates watertight sealing work on a previously installed pipeline by divided flanges and increases a cross sectional area of a sponge rubber ring to reliably guarantee watertightness. The watertight sealing device for a portion of a pipeline connected to a wall of a structure comprises: a guide ring which is installed in a watertight manner through a hole penetrating the wall of the structure to pass the pipeline thereinto, and has an inner diameter relatively larger than an outer diameter of the pipeline to form a gap between the inner diameter thereof and the outer diameter of the pipeline; a circular flange fixed on one end of the guide ring and provided with bolt holes formed at regular intervals; a pair of divided flanges in a divided form corresponding and facing the circular flange and having bolt holes corresponding to the bolt holes; and a sponge rubber ring disposed between the circular flange and the divided flanges and tightly attached to the pipeline by tightening bolts/nuts of the circular flange and the divided flanges to seal the pipeline in a watertight manner.

Description

The watertight device of the structure wall connection part of the channel {omit}

The present invention relates to a pipeline for preventing water from permeating between a pipeline and a wall when a pipeline buried underground passes through a wall of a structure of a valve chamber or a wall of a water intake or underground structure (hereinafter referred to as a "structure wall") The present invention relates to a watertight structure for a structure wall connection part, and more particularly, to a watertight structure for a pipeline that facilitates watertight work of pipelines installed through divided flanges and ensures a watertightness by increasing a cross- Connection watertightness device.

In order to control various kinds of fluids flowing in the pipeline, it is necessary to use a constant interval in order to control the various kinds of fluids flowing in the pipeline, in general, sewage and water pipelines, pipelines used for pipelines or gas pipelines, (Hereinafter collectively referred to as "valve facilities") equipped with valves, air valves, pressure reducing valves, ito valves, fire hydrants, flow meters and pumps, Space.

Thus, the conduit is connected to a valve facility disposed in the inner space through the wall of the structure of the valve chamber or the living room. Accordingly, the pipeline passing through the wall of the structure is watertightly sealed to prevent water from penetrating into the valve chamber, thereby protecting the valve facility in the valve chamber.

For example, in the case of a watertight device of a 'simple installation type valve chamber' of Korean Patent Laid-Open Publication No. 10-2010-0091478, a reinforcing flange is fixed to the outside of the valve chamber, and the reinforcing flange is provided with, Wherein a fixing flange is fixed to the outer periphery of the pipe, and a packing is fitted to the packing space of the fixing flange.

In addition, in the case of the waterproofing device for the wall connection part of the pipe structure of the duct structure of the Korean Utility Model Registration No. 20-0164510, a plurality of pipe collars are projected on the inner side, a pipe sleeve is provided on the outer periphery of the pipe, A rubber ring which is interposed between the tube sleeve and the tube and contacts the stopper of the tube sleeve; a press-fit flange which is bent at right angles and pushes the rubber ring between the tube sleeve and the tube; And a bolt nut for pushing the rubber ring between the tube sleeve and the pipe to fix the rubber ring.

In the case of the above prior arts, water tightness is realized by tightening the bolt through a pusher (a presser foot flange) to closely contact the packing (rubber ring) to the pipe (pipeline), and the pusher (pusher flange) The tightening action of the push button acts on the longitudinal direction of the pipe, and only a part thereof acts in the pipe diameter direction of the pipe, that is, in the direction perpendicular to the pipe, The water tightness can be lowered due to the weakening of the adhesion in the radial direction of the ring.

In order to install the watertight device in the existing pipeline because the pusher (pusher flange) is formed in a circular flange shape, since the circular pusher (pusher flange) can not be installed directly on the pipeline, the pipe or valve facility is disassembled, (A push-button flange) must be installed, so that a large amount of work time and labor costs are required.

On the other hand, a water hammer phenomenon (a phenomenon in which the water flows backward and strongly hits a pipe wall, a valve, etc.) due to a working fluid of water may occur in the pipeline. In the prior art, The impact due to the water hammer phenomenon is transmitted to the pusher (the pusher flange) and its peripheral parts (for example, valve facilities), and the watertightness is deteriorated due to deformation or breakage of the connection part watertight device due to the cumulative fatigue of the impact There is a problem.

Therefore, in addition to preventing the water from penetrating through the wall in the pipeline passing through the wall of the structure, the pipeline also facilitates the watertight work of the pipeline through the flange without disassembling the pipeline or valve facilities, There is still a need for a new technique for securing the structural stability and watertightness of the structure wall by preventing interference with the watertightness device.

Patent Document 1: Korean Patent Publication No. 10-2010-0091478 Patent Document 2: Korean Utility Model Registration No. 20-0164510

A problem to be solved by the present invention is to enable watertightness of pipelines through a divided flange or the like even in the case of not disassembling a pipeline or a valve facility installed in the pipeline so that maintenance work such as watertight operation of pipelines and replacement of sponge rubber rings To improve the watertightness of the duct by increasing the adhesion of the sponge rubber ring and to protect the components of the watertight device by preventing the shock due to the water hammer phenomenon occurring in the duct from being transmitted to the watertight device, So that the watertightness can be improved.

The object of the present invention is to provide a watertight structure for a wall connection part of a pipeline which is watertightly fitted through a through hole of the wall of the structure and passes through the pipeline inwardly and has an inner diameter relatively larger than the outer diameter of the pipeline A circular flange fixed to one end of the guide ring and having a bolt hole formed at a predetermined interval, and a bolt hole facing the circular flange and corresponding to the bolt hole, And a sponge rubber ring which is interposed between the circular flange and the split flange and is tightly fitted to the pipeline by bolt / nut fastening of the circular flange and the split flange to tightly seal the pipeline. .

According to another aspect of the present invention, there is provided a watertight structure for a wall connection part of a pipeline, the watertight structure having a watertightness through a through hole formed in the wall of the structure and having an inner diameter relatively larger than an outer diameter of the duct, A circular flange fixed to one end of the guide ring and formed with a bolt hole at a predetermined interval and a split flange having a bolt hole corresponding to the circular flange and corresponding to the bolt hole, And a wing flange having a bolt hole formed to be perpendicular to both ends of the split flange so as to enable movement of the split flange in the pipe diameter direction to provide tightening, And the bolts / nuts of the circular flange and the split flange, Is by a bolt / nut fastening of Flange close contact with the duct characterized in that the sponge consists of a rubber ring to a water-tight conduit.

According to another aspect of the present invention, there is provided a watertightness device for a structural body wall connection part of a pipeline, the watertight structure having a watertight structure through a through hole formed in the wall of the structural body and having an inner diameter relatively larger than an outer diameter of the duct, A pair of split flanges fixed to the one end of the split guide ring and formed with bolt holes at regular intervals in correspondence with the split guide ring, A pair of split flange faces of the split flange facing the flange corresponding to the bolt holes and formed with bolt holes corresponding to the bolt holes, and a pair of split flanges provided between the split flange and the split flange to closely contact the pipe by bolt / And a sponge rubber ring which is watertight to the channel.

Wherein the inner corner of the circular flange and the split flange has a tapered chamfered portion for widening a contact area with the sponge rubber ring and simultaneously inducing the sponge rubber ring to adhere to the channel.

Wherein the sponge rubber ring is circular in cross section and has a concavity and convexity formed on the surface of the circular cross-section to widen the cross-sectional area.

Wherein the sponge rubber ring is formed of a sloped portion in contact with the chamfered portion of the flange and a portion in contact with the channel is a flat portion, and the chamfered portion and the surface of the flat portion have irregularities that widen the cross- .

The irregularities are serrated or trapezoidal.

The sponge rubber ring is characterized in that a strip-shaped rubber is cut in accordance with the outer diameter of the channel, and the cut surface is sealed with an adhesive.

The sponge rubber ring is an EPDM rubber (ethylene propylene diene monomer rubber) capable of elastic deformation.

A second circular flange identical to the circular flange is provided on the opposite side of the guide ring provided with the circular flange and a second split flange facing the same as the split flange faces and a sponge And a second sponge rubber ring identical to the rubber ring is interposed between the sponge rubber ring and the sponge rubber ring.

And the pair of split flanges are formed by integrally fixing the split flanges by welding after the split flanges are installed in the pipelines.

According to the watertight structure of the structure wall connection portion of the present invention, the watertight work of the pipeline can be performed through the divided flange or the guide ring even in the state where the existing pipeline or valve facility is not disassembled, And it is easy to maintain such as replacing the sponge rubber ring.

Further, according to the present invention, it is possible to move the split flange in the pipe diameter direction (in the direction perpendicular to the pipe) of the pipe by the wing flange formed on the split flange, thereby improving the watertightness of the pipe by increasing the pipe adhesion of the sponge rubber ring .

In addition, the present invention avoids an impact on a water hammer phenomenon generated in a pipeline by a guide ring installed with an inner diameter relatively larger than an outer diameter of a channel, thereby protecting parts of the water-tightness device and improving durability and water- .

Fig. 1 is an illustration of a watertight device of a conduit in a wall of a structure of a valve chamber according to one embodiment of the present invention.
2 is an exploded perspective view of the components illustrated in one embodiment of the present invention.
3 is an assembled view of the present invention.
4 and 5 are cross-sectional views illustrating a modified example of the sponge rubber ring of the present invention.
Figures 6A and 6B illustrate a variation of the split flange of the present invention.
Fig. 7 is an assembled view according to the split flange shown in Fig. 6a.
Fig. 8 is a modification of the present invention, which illustrates a watertight apparatus of a channel in a wall of a structure of a valve chamber.
FIG. 9 is an exploded perspective view of the components illustrated in the two embodiments of the present invention. FIG.
10 is an assembled perspective view of Fig.

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

Prior to this, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may appropriately define the concept of the term in order to describe its invention in the best possible way It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, various equivalents And variations are possible.

FIG. 1 is an exploded perspective view of a watertight apparatus of a duct in a wall of a structure of a valve chamber according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the components illustrated in an embodiment of the present invention, .

The watertight structure of the structure wall connection portion of the pipeline according to the present invention is largely composed of a guide ring 10, a circular flange 20, a split flange 30 and a sponge rubber ring 40.

The guide ring 10 is installed through the perforated hole 112 of the structural wall 110 of the valve chamber 100. The guide ring 10 is threaded through the hole 112 and welded around the hole 112 so that the outer diameter of the guide ring 10 is water tight and secured to the structure wall 110.

The inner circumference of the guide ring 10 passes through the inner side of the guide ring 10 so that a gap can be formed without being in intimate contact with the conduit 200, And has an inner diameter relatively larger than the outer diameter of the duct 200 so as not to interfere with the duct 200. Thereby forming a gap between the outer diameter of the conduit 200 and the outer diameter of the guide ring 10.

A circular flange 20 having bolt holes 22 is formed at one end of the guide ring 10 at regular intervals. The circular flange 20 is welded and sealed through one end of the guide ring 10.

The guide ring 10 and the circular flange 20 may be provided together when the valve chamber 100 is manufactured. The guide ring 10 can be manufactured by cutting a steel pipe into a predetermined length.

In FIG. 1, reference numeral 300 denotes a ground, and reference numeral 400 denotes a valve facility.

A pair of split flanges 30 facing the circular flange 20 and having a bolt hole 32 corresponding to the bolt hole 22 is formed.

Although two pairs of split flanges 30 are illustrated as a pair in the above description, when the outer diameter of the pipe 200 is large, three or four split flanges 30 are divided into a pair of split flanges 30 And a flange (30).

The pipe 200 is interposed between the circular flange 20 and the split flange 30 and is tightly fitted to the pipe 200 by tightening the bolt / nut 60 of the circular flange 20 and the split flange 30, And a sponge rubber ring (40) for watertight sealing.

In this case, the sponge rubber ring 40 may be a sponge rubber ring closed in a ring shape. However, it is also possible to use a sponge rubber ring in which the band rubber is cut to fit the outer diameter of the channel 200, The sponge rubber ring 40 can be formed and used. In the latter case, the sponge rubber ring 40 can be used economically, and there is an advantage that the sponge rubber ring 40 can be easily installed and replaced in a state where the duct 200 is installed.

The installation position of the circular flange 20 provided at one end of the guide ring 10 may be located either inside or outside the structural wall 110 of the valve chamber 100. However, It is preferable to arrange it inside the valve chamber 100. This is because, when the circular flange 20 is installed outside the structure wall 110, the channel 200 is buried, and replacement work of the sponge rubber ring 40 is not easy.

According to the present invention configured as described above, the guide ring 10 having the circular flange 20 formed at one end through the hole 112 penetrating the wall 110 of the valve chamber 100 is fixed by welding The conduit 200 passes through the inside of the guide ring 10 and is located in the valve chamber 100.

In this state, the sponge rubber ring 40 is wound around the pipe 200 to be sealed, and then the split flanges 30, which are divided, are inserted into the bolt hole 22 in the state of facing the circular flange 20, The sponge rubber ring 40 is brought into close contact with the pipeline 200 by tightening the flanges 20 and 30 by tightening the bolts / nuts 60 through the pipe 32 to tightly seal the pipeline 200 .

3, the inner diameter of the guide ring 10 is larger than the outer diameter of the conduit 200, and the sponge rubber ring 40 is positioned in a gap therebetween. As a result, The watertightness of the watertightness device is secured by protecting the parts of the watertightness device including the guide ring 10 by avoiding the impact on the development and the watertightness is improved by the elastic deformation of the sponge rubber ring 40 So that watertightness is improved.

3, the contact area between the circular flange 20 and the split flange 30 is made larger than that of the sponge rubber ring 40, and at the same time, the sponge rubber ring 40 is brought into close contact with the pipeline 200 It is preferable to form inclined chamfered portions (24) and (36). This is because the sponge rubber ring 40 is tilted by the inclined face fitting portions 24 and 36 when the flanges 20 and 30 are fastened and fixed through the bolt / The sponge rubber ring 40 is brought into tight contact with the slanting face portions 24 and 36 so that the contact area is widened. As a result, the sponge rubber ring 40 40 is improved.

Meanwhile, the sponge rubber ring 40 may have a circular cross-section as shown in FIG. 4, and may be formed in the shape of a concavity and convexity 42 that widens the cross-sectional area on the surface of the circular cross-section. The contact area of the sponge rubber ring 40 is increased by the cross sectional area of the concave and convex portions 42 when the sponge rubber ring 40 is in close contact with the conduit 200 and the chamfered portions 24 and 36 so that the water tightness of the sponge rubber ring 40 can be improved .

5, the portion of the sponge rubber ring 40 which is in contact with the chamfered portions 24 and 36 of the flanges 20 and 30 is composed of a sloped surface mounting portion 44, The contacting portion is formed of the flat surface portion 46 and can be formed in the shape of the projections and depressions 48 that enlarge the sectional area on the surface of the flat surface portion 46 and the chamfered portion 44. The contact area of the sponge rubber ring 40 is increased by the cross sectional area of the concave and convex portions 48 when the sponge rubber ring 40 is in close contact with the conduit 200 and the chamfered portions 24 and 36 so that the water tightness of the sponge rubber ring 40 can be improved .

It is preferable that the irregularities 42 and 48 formed in the longitudinal direction on the end face of the sponge rubber ring 40 have a saw tooth shape or a trapezoid shape.

The sponge rubber ring 40 described above is preferably made of an EPDM rubber capable of being elastically deformed. According to this, when the pair of split flanges 30 are fastened to the circular flange 20 with the bolts / nuts 32 through the bolt holes 22 and 32, the fastening force of the sponge rubber rings 40, The split flange 30 can be firmly brought into close contact with the circular flange 20 and the water tightness can be improved by the elastic deformation of the span rubber 200. As described above, The watertightness is maintained by the elastic deformation of the ring 40, thereby improving the watertightness.

Figs. 6A and 6B show a modified example of the split flange of the present invention, and Fig. 7 shows an assembled view according to the split flange shown in Fig. 6A.

6A and 7, the pair of split flanges 30A are provided with bolt holes 32 corresponding to the circular flanges 20 and corresponding to the bolt holes 22, and the split flanges 30A, And a wing flange 38 having bolt holes 39 formed at right angles to both ends of the pipe 200 to allow movement of the split flange 30A in the radial direction of the pipe 200 and to provide tightening.

6A, the wing flange 38 having the bolt hole 39 may be formed at a right angle with respect to the thickness direction at both ends of the split flange 30A, and the split flange 30A, The outer circumferential surface of the thick portion at both ends thereof. In the case of the wing flange 38 of FIG. 6B, the bolt / nut 80 can be equilibrated when the bolt / nut 80 is fixed by being disposed to the left and right about the thickness of the split flange 30A.

According to the split flange 30A configured as described above, the sponge rubber ring 40 is wound around the pipe 200 to be sealed, and then the split flanges 30A, which are divided, are placed on the circular flange 20 Nut 80 by means of bolt holes 22 and 32 and securing the wing flange 38 formed on the split flange 30A with bolts / Tightening force of the sponge rubber ring 60 acts on the longitudinal direction of the conduit 200 and the tightening force of the bolt / nut 80 acts in the radial direction of the conduit 200 so that the sponge rubber ring 40 closely contacts the conduit 200 . The watertightness of the sponge rubber ring 40 can be further improved by pressing the sponge rubber ring 40 in the radial direction of the pipe 200 and pressing the wing flange 38 as described above.

The split flange 30A including the blade flange 38 slightly moves in the radial direction of the pipe 200 when the bolt / nut 80 of the blade flange 38 is tightened, The bolt holes 22 and 32 formed in the split flange 30A are formed such that the bolt shafts are formed so as to be large in diameter so that the bolt holes 22 and 32 can be moved in the radial direction. So that it can be formed into a long hole.

A bolt / nut 60 for fastening the circular flange 20 and the split flange 30A in the horizontal direction and a bolt / nut 60 for fastening the bolt / nut 80 for fastening the pair of split flanges 30A in the radial direction, When either one of them is completely fastened, it is preferable that the fastening of the other is not smooth and the both sides are alternately and uniformly fastened and tightened.

8, a second circular flange 20, which is the same as the circular flange 20, is provided on the opposite side of the guide ring 10 provided with the circular flange 20, and a split flange 30 The same second flange 30 and 30A as the sponge rubber ring 40 and the second flange 20 and the second flange 30 and 30A, The sponge rubber ring 40 of the sponge rubber ring 40 is inserted and tightened by the bolts / nuts 60 and 80 so that the sponge rubber ring 40 is closely contacted from both sides of the conduit 200 to tightly seal the conduit 200 .

The sponge rubber rings 40 and 40 are wound on the pipe 200 at the positions of the circular flanges 20 and 20 formed on both sides of the guide ring 10 as described above and then the pair of split By fastening the bolts / nuts 60 and 80 with the split flanges 30A and 30A formed with the flanges 30 and 30 or the flange 38 facing the circular flanges 20 and 20, respectively, The sponge rubber rings 40 and 40 are brought into close contact with the conduit 200 by tightening so that watertightness of the conduit 200 is achieved. Accordingly, the sponge rubber rings 40 and 40 on both sides of the pipeline 200 are watertight to the pipeline 200, thereby doubling the water tightness.

When the circular flanges 20 and 20 are formed on both sides of the guide ring 10 as described above, the circular flange 20 is installed on one side of the guide ring 10 for the sake of assembling, 100 are projected in and out through a hole 112 formed in the structural wall 110 and welded and sealed through the hole 112 to the other side of the guide ring 10, ).

FIG. 9 is an exploded perspective view of the components illustrated in the second embodiment of the present invention, and FIG. 10 is a perspective view of FIG.

9 and 10 so as to be watertightly inserted through the perforated hole 112 of the structural wall 110 so as to pass through the channel 200 inwardly and to have an inner diameter relatively larger than the outer diameter of the channel 200, A split guide ring 10A which is formed in a split shape and which is fixed by welding so as to form a gap between the split guide ring 10A and the outer diameter of the pipeline 200; A pair of split flanges 20A in which bolt holes 22 are formed at regular intervals and a split type flange 20A facing the split flange 20A and corresponding to the bolt holes 22, A pair of split flanges 30 and a bolt / nut 60 interposed between the split flange 20A and the split flange 30 to tighten the bolts / nuts 60 of the split flange 20A and the split flange 30, 200) and a sponge rubber ring (40) that is watertight to the conduit (200) The.

In the second embodiment of the present invention configured as described above, the connection of the structure wall 110 is tightly sealed through the divided guide ring 10A to the pipe 200 installed in the base.

That is, when watertightness is made in the connection portion of the structural wall body 110 in a state where the conduit passage 200 is already installed in the valve chamber 100, the divided divided guide rings 10A are first connected to the conduit 200 And the divided surfaces are welded to integrate the divided guide ring 10A.

The sponge rubber ring 40 is wound around the pipe 200 to be sealed and then the bolt holes 22 and 32 are formed in a state in which the pair of split flanges 30 face the split flange 20A The sponge rubber ring 40 is brought into close contact with the conduit 200 by tightening the flanges 20A and 30 by tightening the bolts /

8, a second split flange 20A identical to the split flange 20A is provided on the opposite side of the split guide ring 10A provided with the split flange 20A And a second split flange 30 (30A) identical to the split flange 30 (30A) faces and a sponge 30A (30A) is provided between the second split flange 20A and the second split flange 30 The second sponge rubber ring 40 which is the same as the rubber ring 40 is interposed and tightened by the bolts / nuts 60 and 80 so that the sponge rubber ring 40 comes in close contact with both sides of the conduit 200, 200 can be configured to be watertight.

On the other hand, in the case of the pair of split flanges 30 and 30A configured in the divided form described in the first and second embodiments, after the split flanges 30 and 30A are installed in the pipeline 200, the split flanges 30 and 30A are welded It can be fixed and integrated. This is because the sponge rubber ring 40 can be replaced even if the split flange 30 (30A) is welded and integrated so that the pipe 200 is installed in the valve chamber 100, 20) 20A is easy to assemble.

10: Guide ring
10A: split guide ring
20: Circular flange
20A, 30, 30A: Split flange
38: Wing flange
40: Sponge rubber ring
60, 80: Bolt / nut
100: Valve chamber
110: Structure wall
200: channel

Claims (12)

In the watertight apparatus for connecting the structural wall (110) of the conduit (200)
And is installed in a watertight manner through a through hole 112 of the structural wall 110 so as to pass through the pipeline 200 inward and has an inner diameter relatively larger than the outer diameter of the pipeline 200, A guide ring 10 for forming a gap between the guide ring 10 and the outer diameter,
A circular flange 20 fixed to one end of the guide ring 10 and formed with a bolt hole 22 at regular intervals,
A pair of split flanges 30 in the form of a division having bolt holes 32 corresponding to the bolt hole 22 and corresponding to the circular flange 20,
The pipe 200 is interposed between the circular flange 20 and the split flange 30 to closely contact the pipe 200 by tightening the bolt / nut 60 between the circular flange 20 and the split flange 30, And a sponge rubber ring (40) for watertight sealing. In the watertight apparatus for connecting the structural wall (110) of the conduit (200)
And is installed in a watertight manner through a through hole 112 of the structural wall 110 so as to pass through the pipeline 200 inward and has an inner diameter relatively larger than the outer diameter of the pipeline 200, A guide ring 10 for forming a gap between the guide ring 10 and the outer diameter,
A circular flange 20 fixed to one end of the guide ring 10 and formed with a bolt hole 22 at regular intervals,
A pair of split flanges 30A facing the circular flange 20 and having a bolt hole 32 corresponding to the bolt hole 22 and a pair of split flanges 30A formed at both ends of the split flange 30A at right angles And a vane flange (38) having a bolt hole (39) to allow for the movement of the split flange (30A) in the radial direction of the conduit (200) to provide tightening,
A bolt / nut 60 of the wing flange 38 is inserted between the circular flange 20 and the split flange 30A to tighten the bolt / nut 60 of the circular flange 20 and the split flange 30A, And a sponge rubber ring (40) which is tightly attached to the conduit (200) by tightening to tightly seal the conduit (200). In the watertight apparatus for connecting the structural wall (110) of the conduit (200)
And is formed to have a relatively larger inner diameter than the outer diameter of the channel 200 and to be formed in a divided shape and to be welded to the inner wall of the structure wall 110. [ A split guide ring 10A which is fixed to the outer circumference of the duct 200 and forms a gap between the outer circumference of the duct 200 and the outer circumference of the duct 200,
A pair of split flanges 20A fixed to one end of the split guide ring 10A in correspondence with the split guide ring 10A and formed with bolt holes 22 at regular intervals,
A pair of split flanges 30, which are divided in a shape corresponding to the split flange 20A and provided with bolt holes 32 corresponding to the bolt holes 22,
The pipe 200 is interposed between the split flange 20A and the split flange 30 so as to be brought into close contact with the pipeline 200 by tightening the bolts / nuts 60 of the split flange 20A and the split flange 30, And a sponge rubber ring (40) for watertight sealing. 4. The method according to any one of claims 1 to 3,
The contact area between the circular flange 20 and the split flanges 20A, 30 and 30A is increased at the inner corner and the sponge rubber ring 40 is brought into close contact with the duct 200 (24) (36) are formed on the inner wall of the pipe structure. 4. The method according to any one of claims 1 to 3,
Wherein the sponge rubber ring (40) is an EPDM rubber capable of elastically deforming, has a circular cross section, and has unevenness (42) formed on the surface of the circular cross section to widen the cross-sectional area. 4. The method according to any one of claims 1 to 3,
The sponge rubber ring 40 is an elastically deformable EPDM rubber and the portions of the flanges 20A, 20A, 30 and 30A which contact the chamfered portions 24 and 36 are inclined to the inclined surface 44 And the surface of the planar portion (46) is provided with projections and depressions (48) for widening the cross-sectional area thereof, wherein the planar portion (46) Watertight connection of the structure wall connection. 6. The method of claim 5,
Wherein the protrusions (42) are serrated or trapezoidal. The method according to claim 6,
Wherein the protrusions (48) are serrated or trapezoidal. 4. The method according to any one of claims 1 to 3,
Wherein the sponge rubber ring (40) is formed by cutting a band-shaped rubber to fit the outer diameter of the duct (200) and sealing the cut surface with an adhesive. 3. The method according to claim 1 or 2,
A second circular flange 20 identical to the circular flange 20 is provided on the opposite side of the guide ring 10 on which the circular flange 20 is provided and a second circular flange 20, A second sponge rubber ring 40 identical to the sponge rubber ring 40 is provided between the second circular flange 20 and the second split flange 30 (30A) facing the flanges 30 (30A) Wherein the sponge rubber ring (40) is tightly adhered to both sides of the pipe (200) by tightening bolts / nuts and is water tight. The method of claim 3,
A second split flange 20A identical to the split flange 20A is provided on the opposite side of the split guide ring 10A on which the split flange 20A is provided and a second split flange 20A identical to the split flange 30, A second sponge rubber ring 40 which is the same as the sponge rubber ring 40 is provided between the second split flange 20A and the second split flange 30 and 30A so as to face the split flange 30 (30A) Wherein the sponge rubber ring (40) is tightly adhered on both sides of the pipe (200) by tightening of bolts / nuts and is water tight. 4. The method according to any one of claims 1 to 3,
Wherein the pair of split flanges 20A, 30 and 30A are formed by fixing the split flanges 30 and 30A by welding after the split flanges 20A, 30 and 30A are installed in the pipeline 200. [ Watertight device for wall connection.

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