JPH01312291A - Water stop method for tank wall through pipe of water storage tank - Google Patents

Abstract

PURPOSE:To effectively stop water between a short pipe and a pipe by passing the short pipe of a water stop means through the pipe while a sealing member is filled and coated on the outer surface of a pipe part passing through a tank wall and protruding to the inside of the tank. CONSTITUTION:The minor diameter of a short pipe 5 provided with a flange 6 at one end is made slight larger than the major diameter of a pipe passing through the tank wall of a water storage tank 1. A water stop means 4 having one end side provided with a flange 6 which is expanded and tapered is passed through the pipe part of the inside of the tank wall with the flange 6 passed first and the flange part is bonded, welded by a solvent or thermally welded to the water proof sheet layer of the internal face of the tank wall 2. Before the water stop means 4 is passed through the pipe, a sealing member 9 is filled and coated to an annular form circumferentially on the outer surface of the pipe.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a pipe penetrating the tank wall of a heat storage tank or other water storage tank whose tank wall is made of concrete, which is installed horizontally under the floor of a building. The present invention relates to a method for stopping water around a pipe inside a tank and a water stopping device therefor.

[Conventional technology]

A water stopper used in the water stopper method for a pipe penetrating a tank wall of a water storage tank is shown in FIG. 3.

In FIG. 3, 21 is a water storage tank, 22 is a concrete tank wall, and 23 is a pipe such as a communication pipe or a passage pipe that penetrates the concrete tank wall and communicates with the adjacent water tank.

The pipe 23 is made of vinyl chloride or steel, for example, and has a diameter of 6
Some reach 0 cm.

At the part where the pipe 23 penetrates the tank wall 22, water is stopped around the pipe inside the tank! 424 is used.

The water stopper 24 is provided with a flange 26 at one end of a short pipe 25 having an inner diameter much larger than the diameter of the pipe 23.

In order to use this water stopper 24 to stop water at the part where the pipe 23 penetrates the tank wall 22 (around the pipe), place the flange 26 on the outside of the pipe 23 in the water tank 21 first. The flange 26 is fixed to the waterproof sheet layer 27 on the inner surface of the tank wall 22 in a watertight state, and a sealing material 28 such as elastic epoxy resin is applied from the other side of the short pipe 25 to the gap between the short pipe and the pipe 23. Fill and seal.

The illustrated water stopper 24 is fixed to the waterproof sheet layer 27 by gluing, solvent welding, or heat welding two waterproof sheet pieces to the flange 26 by gluing, solvent welding, or heat welding to the waterproof sheet I'1i 227. wear.

[Problem that the invention seeks to solve]

A pipe that penetrates the tank wall of a water tank is completely sealed when a water stopper is fitted to the pipe inside the tank and the flange is glued, solvent welded, or heat fused to the waterproof sheet layer on the inner surface of the tank wall. However, the water stopping method, which involves injecting sealant into the gap between the pipe and the short pipe, was supposed to be a completely continuous injection in the circumferential direction, but there were variations in work accuracy, and the sealant was injected into the gap between the pipe and the short pipe. The gaps between the sealants could not be filled in a sufficient amount, resulting in a lack of effective adhesion area for the sealant, and the presence of minute gaps, so it could not be said to completely stop water.

This invention attempts to solve the above-mentioned problems, and its purpose is to apply a sealant to the outer surface of the pipe that penetrates the tank wall and protrudes inside the tank, and then attaches the water stopper to the outside surface of the pipe. To provide a water stopping method for a tank wall penetrating pipe part of a water tank, and a water stopping tool thereof, in which water is surely stopped between the short pipe and the pipe by passing the short pipe through the pipe.

[Means for solving problems]

In order to achieve the above object, the present invention makes the inner diameter of the short pipe in the water stopper a tapered part that expands on one end side provided with a flange, and when fitting the water stopper to the inside pipe part of the tank, the pipe A water stoppage method for a pipe penetrating a tank wall of a water tank, in which a sealant is applied in a circumferential annular manner on the outer surface of the pipe, and a short pipe of the water stopper is not only opaque but also transparent. This is what I did.

[Effect]

Apply sealant in advance in a circumferential ring shape to the outer surface of the pipe section inside the tank that penetrates the tank wall of the water tank, and in this state, insert the short pipe of the water stopper with the flange at one end first. The installation of the water stopper is completed by passing the pipe part through the flange part and bonding, solvent welding or heat fusion the flange part to the waterproof sheet layer on the inner surface of the tank wall. Tank the end pipe! l! The sealant is forcibly expanded through a gap that becomes smaller as it is pushed to the side, completely stopping water, and by making the short tube a transparent material, the filling state of the sealant can be confirmed from the outside.

〔Example〕

The drawings show an embodiment of the water stopping method for a side wall penetrating pipe of a water storage tank according to the present invention, and FIG. 1 shows an example of a water stopping tool used in the water stopping method for a water tank penetrating pipe. Figure 2 is a vertical cross-sectional view of the main parts of Mr. R who is implementing the water stop method using this water stop tool, 1 is the water tank, 2 is the concrete tank wall, and 3 is the tank. It is a pipe made of vinyl chloride or steel, such as a communicating pipe or a human pipe that penetrates the wall 2.

Reference numeral 4 denotes a water stopper made of a molded product such as vinyl chloride, which is attached to the pipe 3 in the water storage tank 1. A flange 6 is provided at one end of the short pipe 5, and the inner diameter of the short pipe 5 is the same as that of the pipe 3.
It is slightly larger than the outer diameter of the flange 6, and is tapered to widen at one end where the flange 6 is provided. The Taber angle is approximately 5°.

The illustrated water stopper 4 is a molded product in which a flange 6 is connected to one end of the short pipe 5 at -ft, but the flange is a separate piece that is glued, solvent welded, or heat fused to the short pipe. You can also do that.

The water stopper 4 is made by gluing, solvent welding, or heat-sealing a waterproof sheet piece 7 made of vinyl chloride or the like to the flange 6 during manufacture or use, so that the flange can be attached to the waterproof sheet on the inner surface of the tank wall, as described later. Fixation to layer 8 becomes easy and reliable.

A pipe 3 that penetrates the tank wall 2 of a water tank using a water stopper 4
In order to stop the water around the pipe 1 inside the tank, sealant 9 such as elastic epoxy resin is applied to the outer surface of the pipe part in advance in a circular manner in the circumferential direction, and then the short pipe 5 is attached to the flange. 6 first, pass through the pipe section, then flange 6
, and the waterproof sheet piece 7 attached to the flange is glued or solvent welded or heat fused to the waterproof sheet JW8 on the inner surface of the tank wall to complete the waterproofing method around the tank wall penetrating pipe,
The sealing material 9 applied in a heap on the outer surface of the pipe section is forcibly expanded as it moves forward through the short pipe, as the gap between the short pipe and the pipe gradually narrows, resulting in a complete water stoppage. .

If the entire water stopper 4 or the flange is made separately, only the short pipe 5 can be made of a transparent material, and by making it transparent, the state of the filled sealing material can be checked through.

The illustrated water tank has only a waterproof sheet [8] on the inner surface of the concrete tank wall 2, but in the case of a heat storage layer, there is a material such as hard urethane foam or hard styrene foam between the concrete tank wall and the waterproof sheet layer. It has a layer of insulation material.

In addition, in the above embodiment, the layer wall through which the pipe 3 penetrates is l11.
Although only one wall is shown, there are cases where the bottom part of the water tank is connected to an adjacent water tank by a pipe such as a drain pipe, and the stop of this invention can also be used to stop water around the part of the pipe that penetrates the bottom board. Water methods and water stop devices can be adopted.

This water tank water stopping method for a tank wall penetrating pipe section can also be adopted for water stopping a shaft leg portion of a ramp attached to the inner surface of a tank wall. However, in this case, the gangway is installed on the tank wall with the water stopper attached first, then the water stopper is moved in the direction away from the tank wall, and the sealant is applied in a heap to the shaft leg of the ramp, and then the water stop is stopped. The ingredients shall be moved towards the tank wall.

〔effect〕

The water stoppage method for a tank wall penetrating pipe portion of a water tank according to the present invention has the following effects.

+11 The inner diameter of the short pipe with a flange on one end is slightly larger than the outer diameter of the pipe penetrating the tank wall of the water tank, and the one end with the flange is made with a taper that expands inside the tank wall. Pass the flange through the pipe first, and glue, solvent weld, or heat seal the flange to the waterproof sheet layer on the inner surface of the tank wall, and apply a sealant to the outer surface of the pipe before passing the water stopper through the pipe. Since the sealing material is applied in an annular manner in the circumferential direction, by passing a water stopper through the pipe, the sealant is expanded and compressed by the tapered hole wall of the short pipe, resulting in sealing. There are no microscopic spaces within the material layer, making it possible to completely shut off water around the pipe.

(2) By making at least the short pipe part of the water stopper a transparent material, the sealing material in the gap between the short pipe and the pipe can be removed during the process of pushing the water stopper through the pipe or when it is fully installed. The filling status can be easily checked by looking through from the outside.
It is possible to completely stop water.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an example of a water stopper used in the water stopper method for a tank wall penetrating pipe portion of a water storage tank according to the present invention, and Fig. 2 is a water stopper method using the same water stopper as described above. FIG. 3 is a vertical cross-sectional view of a main part in an embodiment of a conventional method for stopping water in a tank wall penetrating pipe section of a water tank. 1...Water tank, 2...Concrete tank wall, 3...Tank wall penetrating pipe, 4...Water stop device,
5... Short pipe, 6... Flange, 7... Waterproof sheet piece, 8... Waterproof sheet layer, 9...
・Sealing material patent applicant Yamade Kosan Co., Ltd.

Claims (3)

[Claims] (1) A water stop device in which the inner diameter of a short pipe with a flange at one end is slightly larger than the outer diameter of the pipe penetrating the tank wall of the water tank.
The short pipe is passed through the inner pipe section of the tank with the flange first, and the gap between the short pipe and the pipe is filled with a sealant to fix the flange section watertightly to the waterproof layer on the inner surface of the tank wall. In the water stopper method for penetrating pipes, the inner diameter of the short pipe in the water stopper is tapered so that one end with a flange expands, and before fitting the water stopper to the pipe inside the tank, the outer surface of the pipe is A water stoppage method for a pipe portion penetrating a tank wall of a water tank, characterized by applying a sealant in a heaped manner in a circumferential annular manner. (2) Claim (1) wherein the inner diameter of the short pipe having a flange at one end is slightly larger than the outer diameter of the pipe penetrating the tank wall of the water tank, and the one end having the flange is tapered to widen.
) A water stop device for the pipe that penetrates the tank wall of the water tank described in ). (3) The water stopper for a tank wall penetrating pipe portion of a water storage tank according to claim (2), wherein at least the short pipe portion that fits onto the tank wall penetrating pipe portion is made of transparent plastic.