JPH07151271A - Prevention for water leak in concrete penetration part of piping and device therefor - Google Patents

Abstract

PURPOSE:To exceedingly improve the water leak preventing function and facilitate the maintenance management for a pipe and the equipment by tightening an annular shaped aqua seal which possesses elasticity and the water absorbing swelling performance at a part by a plurality of pressing members through an annular pressing plate by a bolt and closely attaching the aqua seal on the pipe and a side wall. CONSTITUTION:As for a pipe 2 such as a circulation water pipe, an annular aqua seal 1 which is made of synthetic rubber, possesses elasticity and has a square-shaped section is arranged so as to surround the pipe 2 in contact with the side wall and the pipe 2, in the vicinity of the inner wall on the side wall having a concrete penetration part which penetrates through the side wall 3 of a powder station building, and the inside angular part 5 of the aqua seal 1 is applied with the water absorbing swelling property. The aqua seal 1 surrounding the pipe 2 is pressed by the tightening by a bolt 28 through an annular-shaped pressing plate 14, by a plurality of pressing members 18 which are arranged in each equal interval and whose inner end is fixed on the pipe 2, and the aqua seal 1 is closely attached with the pipe 2 and the side wall. Accordingly, even if water leaks from the pipe 2, side wall 3, etc., the inside angular part 5 absorbs water and swells, and is closely attached, and the outside water leak can be surely suppressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe, such as a circulating water pipe in a power plant, which is laid inside by penetrating a side wall of a building of a power plant or laid in the soil. Although it is laid through the side wall of the pit provided, rainwater etc. leaks into the building or the inside of the pit from the gap between the pipe and the concrete side wall, which may cause corrosion on the outer surface of the pipe or damage to equipment. To prevent it from being raised,
The present invention relates to a method and a device for preventing water leakage in a concrete penetration portion of a pipe.

[0002]

2. Description of the Related Art Conventionally, water leakage at a concrete penetration portion of a pipe has been repaired by closing the water leakage location with cement or the like.

[0003]

However, in the conventional repair of cement or the like, the shielding strength of the repaired cement or the like is weak against the phenomenon such as the subsidence of the pipe and the inclination of the pit due to external factors, and therefore the repaired area is The phenomenon of being destroyed and causing water leakage again to repeat the phenomenon of water invading the inside of a house or a pit cannot be reliably prevented.

[0004]

SUMMARY OF THE INVENTION The present invention has been made by paying attention to such a conventional problem, and in the vicinity of a side wall of a concrete penetrating portion of a pipe, a vicinity of a gap between the pipe and the side wall. In addition, it is an object of the present invention to solve the above-mentioned problems by pressing an aqua seal, which is elastic and partially swellable with water, into close contact with it.

According to the present invention, in the vicinity of the inner wall of the side wall where the concrete penetrating portion of the pipe is located, the outer periphery is covered with a wheel-shaped locking member and is arranged so as to surround the pipe and has elasticity. And an annular aqua seal partly having water swelling property, a plurality of pressing members having an inner end fixed to the pipe in the vicinity of the aqua seal, at equal intervals, through an annular pressing plate. A method for preventing water leakage in a concrete penetration portion of a pipe, characterized in that the pipe and the side wall are pressed tightly with a bolt.

The present invention is also directed to an annular aqua seal which is arranged so as to surround a pipe and is provided with an annular pressing plate on the outside thereof and which is elastic and partially swellable with water. ,
And a wheel-shaped locking member covering the outer periphery of the aqua seal, and a plurality of pressing members at equal intervals provided with bolts for fixing the inner end of the aqua seal to the pipe, the inner end of which is fixed to the pipe. It is a device for preventing water leakage in a concrete penetration portion of a pipe, which is composed of a member.

[0007]

According to the method of preventing water leakage in a concrete penetration portion of a pipe according to the present invention, an aqua seal surrounding a pipe, which is elastic and partially swellable with water, is fixed to the pipe at its inner end. Since it is pressed by a plurality of pressing members and is pressed against the side wall and the pipe around the water leakage point, the pipe may sink, eccentric, twist, etc. , Cracks may occur,
It is possible to reliably prevent water leakage to the inside.

Further, in the water leakage prevention method according to the present invention, since the pressing degree of the aqua seal can be appropriately adjusted by the pressing member, it is possible to surely and swiftly respond to deterioration over time and changes in the situation. It is possible to more reliably prevent the water leakage.

The water leakage prevention method according to the present invention is extremely versatile because it can be applied not only to newly installed piping but also to existing piping.

In addition, the water leakage prevention device in the concrete penetration portion of the pipe according to the present invention has a simple structure and is relatively easy to construct, so that the construction cost is low and, in addition, it has a long life and is therefore extremely economical.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on an embodiment shown in FIGS. In FIG. 1, FIG. 10 and FIG. 11, a pipe 2 such as a circulating water pipe is brought into contact with the side wall 3 and the pipe 2 in the vicinity of the inner wall of the side wall 3 where the concrete penetration part 4 penetrates the side wall 3 of the power plant building. It is an aqua seal which is made of synthetic rubber and has an annular cross-section and an annular shape, which is arranged so as to surround the pipe 2.

The inner corner portion 5 of the aqua seal 1 is provided with a water absorbing and swelling property (a property of expanding when absorbing water). Tube 2
Should water leak from the gap between the side wall 3 and the
Absorbs water and expands to come into close contact with the pipe 2 and the side wall 3 to reliably prevent leakage of water to the outside.

Reference numeral 6 denotes a wheel-shaped locking member that covers the outer periphery of the aqua seal 1 in FIGS. 2 to 4, 10 and 11. The locking member 6, the both ends of each of the plurality latch member bodies 7 (in the drawing six) is divided into (7 ₁ to 7 _6), the flange portion 8 upstanding outwardly (8 _1, 8 ₁ '8 _6,
8 ₆ ′) are provided so that the flange portions 8 ₁ and 8 ₆ ′, 8 ₁ ′ facing each other are provided.
, 8 ₂ ... 8 ₅ ′ and 8 ₆ are formed in a wheel shape by interposing an interposing material 9 such as rubber and tightening and connecting with bolts 10. The interposing material 9 is also useful for adjusting the length so that when the locking member 6 covers the outer periphery of the aqua seal 1, it can be brought into close contact with the aqua seal 1.

Further, the collar portion 8 ₆ ′, 8 ₁ ′, which is opposed to the outer end in the width direction of either one of the collar portions 8 of the locking member main body 7, for example, 8 ₁ , 8 ₂ ... 8 ₆ The contact plate 11 having a length of 8 ₅ ′ is fixed. The contact plate 11 serves as a bolt for pressing the locking member 6 described later toward the side wall 3 and also functions as a jig for assembling each locking member body 7 into the locking member 6.

Further, a plurality (6 in the drawing) of U-shaped receiving plates 12 at equal intervals (center position of each locking member main body 7) on the outer periphery of the locking member 6, the receiving plate main body. It is fixed with 13 as the outside. The receiving plate 12 is provided with a locking member 6 described later on the side wall 3
It receives the bolt that pushes to the side.

In FIG. 5, FIG. 6, FIG. 10 and FIG. 11, reference numeral 14 is an annular pressing plate which is attached to the outer surface of the aqua seal 1 in abutment. The pressing plate 14 is formed by dividing each end of the pressing plate body 15 divided into a plurality (12 in the drawing),
The connecting plate 16 is formed into an annular shape by tightening and connecting via bolts 17 that are planted near both ends of each pressing plate body 15.

7 to 10, a plurality of 18 are fixed at equal intervals in proximity to the aqua seal 1 surrounding the tube 2 and the inner ends of which are fixed to the tube 2 (12 in the drawings, locking members 6). It corresponds to the contact plate 11 and the receiving plate 12) and is a U-shaped pressing member.

The pressing member 18 has a sub bolt hole 19 at a position corresponding to the contact plate 11 and the receiving plate 12 of the locking member 6, and the pressing plate 1.
The main bolt hole 20 is provided at a position corresponding to the vicinity of the center of 4 in the width direction.
Is composed of a pressing member main body 21 provided on the center line in the width direction, and reinforcing plates 22 fixed to both ends of the pressing member main body 21 in the width direction.

Reference numeral 23 denotes a plurality (12 in the drawing) of sub-pressing members whose inner end is fixed to the tube 2 on the same circumferential line as the pressing member 18 and near the middle thereof. The sub pressing member 23 is
A sub-pressing member main body 25 having a bolt hole 24 on the center line in the width direction at a position corresponding to the vicinity of the center of the pressing plate 14 in the width direction (the same position as the main bolt hole 20 of the pressing member 18).
And a reinforcing plate 26 fixed to both ends of the auxiliary pressing member body 25 in the width direction.

Reference numeral 27 is a water leakage prevention device comprising an aqua seal 1, a locking member 6, a pressing plate 14, a pressing member 18 and an auxiliary pressing member 23. Construction work of the water leakage prevention device 27 will be described below.

After subjecting the surface of the pipe 2 to the required treatment, the marking position is determined by marking the pressure member body 20 and the auxiliary pressure member body 24 on the side wall 3 side, and the pressure member 17 and the auxiliary pressure member 22 are attached. , Are fixed to the outer circumference of the pipe 2 by welding at equal intervals. Next, after surface-treating and surface-treating the pipe 2 near the side wall 3, the aqua seal 1 is cut by a predetermined method, and the inner corner 5 is surrounded by the outer periphery of the pipe 2 so that the inner corner 5 is on the side wall 3 side. Then, the cut portions are joined and attached by a predetermined method.

Subsequently, the outer surface of the aqua seal 1 is brought into contact with the two pressing plate bodies 15 assembled in half, and both ends thereof are connected and connected by the connecting plates 16 to form an annular pressing plate. 14 and attach. Further, the outer peripheral surface of the aqua seal 1 is preliminarily assembled in half by two locking member main bodies 7
Then, the interposing material 9 is adjusted so as to be in close contact with the aqua seal 1, the locking member main body 7 is connected and connected, and the locking member 6 is mounted.

Bolts 28 are screwed into and tightened in the main / sub bolt holes 20 and 19 and bolt holes 24 of the pressing member 18 and the sub pressing member 23, and the locking member 6 is attached to the side wall through the receiving plate 12 and the contact plate 11. After pressing to the normal position by pressing to the 3 side, the aqua seal 1 is pressed through the pressing plate 14 to complete the installation of the water leakage prevention device.

The pressed aqua seal 1 has a locking member 6
Since the outer periphery is covered with, it cannot swell outwards and is pressed against the side wall 3 and the pipe 2, so that water leakage from the gap between the side wall 3 and the pipe 2 can be discharged to the outside. Absent. Further, when the inner corner portion 5 absorbs the leaked water, that portion expands and tightly comes into close contact with the side wall 3 and the pipe 2,
Surely prevent leakage of water to the outside.

In this case, the aqua seal 1 which has elasticity and partially absorbs water and swells and surrounds the tube 2 is provided with a plurality of pressing members 18 and sub-pressing members whose inner ends are fixed to the tube 2. Since it is pressed by 23 and is brought into close contact with the side wall 3 and the pipe 2 around the water leakage location, even if there is a gap or crack in the penetration due to fluctuations in the pipe, etc. Prevent.

Further, since the pressing degree of the aqua seal 1 can be appropriately adjusted by the pressing member, it is possible to surely and swiftly cope with deterioration over time and changes in the situation, and to further surely prevent water leakage to the inside. .

Further, it can be applied not only to newly installed pipes but also to existing pipes, so that its versatility is extremely large. In addition, the water leakage waterproof device 27
Since the structure is simple and construction is relatively easy, construction costs are low,
Moreover, it has a long life and is extremely economical.

In one embodiment described above, the aqua seal 1
Although synthetic rubber was used for the above, natural rubber or synthetic resin may be used instead of the synthetic rubber as long as it has the same required characteristics. Further, the locking member 6 is divided into six locking member main bodies 7, but the number of divisions may be appropriately changed depending on the outer diameter of the pipe 2 and the working condition. When the diameter of the pipe is small and the construction environment is good, there may be a minimum of two pipes.

Further, the pressing plate 14 is divided into 12 parts, but the tube 2
The number of divisions may be appropriately changed in the same manner as the locking member 6 depending on the outer diameter and the working environment. Further, the numbers of the pressing plate 14 and the sub-pressing plate 23 fixed to the tube 2 may be appropriately changed according to the outer diameter of the tube 2.

[0030]

The aqua seal, which has elasticity and partially absorbs water and swells, which surrounds the pipe, is pressed by the locking member and the pressing member to be brought into close contact with the side wall and the pipe. The water leakage prevention function is extremely high, which facilitates maintenance of pipes and equipment.

Further, since the pressing state of the aqua seal can be appropriately adjusted by the pressing member, it is possible to surely and swiftly respond to a change in the situation, so that its versatility is extremely large.

Further, the water leakage prevention device has a simple structure and is relatively easy to construct, so that the construction cost is low and, in addition, it has a long service life, is extremely economical, and contributes to widespread use.

[Brief description of drawings]

FIG. 1 is an aqua seal according to an embodiment of the present invention,
(A) is a plan view, (B) is a side view, and (C) is an AA cross-sectional view.

FIG. 2 is a locking member according to an embodiment of the present invention, (A) is a plan view and (B) is a side view.

FIG. 3 is a partially cutaway partial view showing a method of connecting locking members according to an embodiment of the present invention, in which (A) is a plan view and (B) is a side view.

FIG. 4 is a receiving plate fixed to a locking member according to an embodiment of the present invention, (A) is a plan view and (B) is a side view.

FIG. 5 is a pressing plate according to an embodiment of the present invention, (A) is a plan view and (B) is a side view.

6A and 6B are partially cutaway partial views showing a method of connecting pressing plates according to an embodiment of the present invention, in which FIG. 6A is a plan view and FIG. 6B is a side view.

FIG. 7 is a side view in which a pressing member and a sub-pressing member according to an embodiment of the present invention are fixed to the outer circumference of a pipe.

FIG. 8 is a pressing member according to an embodiment of the present invention, (A) is a front view and (B) is a side view.

FIG. 9 is a sub-pressing member according to an embodiment of the present invention, (A)
Is a front view and (B) is a side view.

FIG. 10 is a cross-sectional view in the length direction of a partially cut-out pipe of the water leakage prevention device according to the embodiment of the present invention.

FIG. 11 is a cross-sectional view of a portion of the water leakage prevention device according to the embodiment of the present invention, which is different from that in FIG.

[Explanation of symbols]

 1 Aqua seal 2 Pipe 3 Side wall 5 Inner corner 6 Locking member 7 Locking member main body 8 Collar part 9 Intercalation material 10, 17, 28 Bolts 11 Plate 12 Receiving plate 13 Plate main body 14 Pressing plate 15 Pressing plate main body 16 Connecting Plate 18 Pressing Member 19 Sub Bolt Hole 20 Main Bolt Hole 21 Pressing Member Main Body 23 Sub Pressing Member 24 Bolt Hole 25 Sub Pressing Member Main Body 27 Water Leakage Prevention Device

Claims (5)

[Claims] 1. Near the inner wall of the side wall where the concrete penetration portion of the pipe is present, the outer periphery is covered with a wheel-shaped locking member and is arranged so as to surround the pipe and has elasticity. An annular aqua seal with water absorption swelling in part,
An inner end secured to the tube proximate the aqua seal,
A method for preventing water leakage in a concrete penetration portion of a pipe, characterized by tightening a plurality of pressing members at equal intervals with bolts through an annular pressing plate so as to press-contact with the pipe and the side wall. 2. A ring-shaped aqua seal which is arranged so as to surround a pipe and is provided with a ring-shaped pressing plate on the outer side thereof and which has elasticity and partially absorbs water and swells. A wheel-shaped locking member covering the outer periphery of the aqua seal, and a plurality of pressing members at equal intervals equipped with bolts having an inner end fixed to the pipe in the vicinity of the aqua seal and pressing the pressing plate. Consisting of a water leakage prevention device in the concrete penetration part of the pipe. 3. An inner corner portion having a rectangular cross section that comes into contact with the pipe,
3. The water leakage prevention device according to claim 2, wherein an elastic annular aqua seal made of synthetic rubber having water absorption and swelling property is used. 4. A plurality of locking member main bodies, each of which has a flange portion provided on both ends outwardly and a contact plate fixed to an outer end in the width direction on one of the flange portions. A locking member having a plurality of receiving plates fixed to the outer periphery at equal intervals is used while forming a wheel shape by fastening and connecting a suitable interposing material between the flange portions. Item 2. A water leakage prevention device according to item 2. 5. The leaking water according to claim 2, wherein an annular pressing plate formed by connecting each end of a plurality of pressing plate bodies divided by a connecting plate is used. Prevention device.