JPS644714Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to the prevention of water leakage in corrugated pipe water storage tanks. It concerns water tanks.

[Conventional technology]

The corrugated pipe water tank is as shown in Figure 1.
The can body is made of large-diameter steel corrugated pipe, and the head plate and manhole are attached to the can body.It is lightweight and has excellent mechanical strength, and as a prefabricated water tank, it is significantly more efficient than conventional concrete water storage tanks. The construction period is shortened, and it is attracting attention for use as fire prevention water tanks and disaster prevention water tanks, for example.

The corrugated pipe water tank was first opened in 1988.
The water tank disclosed in No. 145885 is mentioned. In this corrugated pipe water tank, the body is usually formed by joining corrugated plates with an arcuate curved surface into a cylindrical shape.
Bolts and nuts are used to connect the corrugated plates to each other and to connect the corrugated plates to the end plate, and rubber-based packing material is used to prevent water leakage in these areas.

[The problem that the idea aims to solve]

However, the above-mentioned packing material ages over time, or the joints become loose due to earthquakes, impact from objects, etc., and there is a risk of water leakage. The present invention has been made to prevent such water leakage.

[Means and actions for solving the problem]

The inventor came up with the idea of attaching a watertight inner bag to a corrugated pipe water tank that can fit tightly against the inner wall of the tank to isolate water from the aging packing and loose connections of the tank. It was completed.

Thus, according to the present invention, there is provided a water tank made of a corrugated pipe, which is equipped with a watertight, flexible and collapsible bag, which can be brought into close contact with the inner wall of the water tank, The flange at the top of the bag opening corresponding to the water tank manhole is fixed by touching the flange of the water tank manhole, and the outer surface of the bag body is attached to the inner wall of the water tank at the required points above the center by snap hooks, hooks, etc. A corrugated pipe water storage tank is provided, characterized in that it is held by a connecting means.

An embodiment of the inner bag body applied to the present invention will be explained based on the drawings. Figure 1 is a front view of a corrugated pipe water storage tank, and Figure 2 is a partially cutaway perspective view of the inner bag body in an expanded state. In the drawings, FIG. 3 is a partially omitted longitudinal sectional view of a horizontal water storage tank equipped with an inner bag body. A corrugated pipe water tank is made by corrugating a steel plate, then joining corrugated plates with an arcuate curved surface into a cylindrical shape with bolts and nuts to form a body, and attaching mirror plates to both ends of the cylindrical body using bolts and nuts. Combine to form a water tank. Rubber packing material is used at the joints to prevent water leakage. The inner bag body 1 consists of a body part 2, a head plate part 3, a bag opening part 4, and a bag mouth flange 5, and is in close contact with the body part and the head plate part of the water tank 7, and the flange 5 of the bag mouth part 4 is connected to the water tank 7. The outer surface of the bag body has snap hooks 6 for connection at required points above the center.
A water storage tank is formed by providing snap hooks on the inner wall of the water tank at required locations corresponding to the snap hooks of the bag body, and by tightening both, the bag is held on the inner wall of the water tank, thereby forming a water tank. When water is poured into the water tank, the inner bag smoothly expands due to the water injection and comes into close contact with the inner wall of the water tank, and acts to prevent excessive tensile load from being applied to the bag opening. The connecting means may be a snap hook, a ring ring, a hook, or other appropriate methods, and the holding location of the bag may be appropriately selected depending on the size of the water tank.

If the water storage tank has a bottom bit, the bag should have a shape corresponding to the bottom bit, and if the water storage tank has a drain vent and an air vent, an outlet that is watertightly connected to these should be used.

In order to ensure long-term watertightness, the inner bag according to the present invention is made from a sheet that is excellent in water resistance and weather resistance, and is relatively light and has excellent mechanical strength such as tear strength. The sheet is made of fabric such as polyester, nylon, or vinylon, and is topped with a rubber system such as styrene-butadiene rubber, chloroprene rubber, soft vinyl chloride, ethylene-vinyl acetate copolymer, or other thermoplastic resin. It is made by applying a covering process suitable for the polymeric material, such as date wrapping or laminating, and the sheet seams are joined together by vulcanization adhesion, high frequency welding, etc. to form the inner bag body, and the outer surface of the bag body is One of the aforementioned coupling means is attached to the required location.

The inner bag body according to the present invention is inserted through the water tank manhole during or after assembly of the corrugated pipe water tank. That is, the flexible inner bag body is
It is inserted into the tank from the water storage tank manhole in a folded state, and expanded to correspond to the shape of the water tank within the tank, and the connecting means of the inner bag body is connected to the other side of the connecting means previously provided on the inner wall of the water tank. and, if necessary,
It is sufficient to combine it with a drain vent, air vent, etc., pull up the bag opening from the water storage tank manhole onto the manhole, and fix the flange of the bag opening to the flange of the water storage tank manhole.

"Effects of the Invention" Since the corrugated pipe water storage tank according to the invention has the above-described configuration, after filling the bag with water, the water causes the inner bag to come into close contact with the inner wall of the water tank. The bag body is flexible and highly water resistant, which prevents water from leaking and also prevents water from leaking due to loosening of joints caused by tank collisions, etc., so corrugated pipe water storage tanks can be used for long periods of time without the risk of water leakage. It is widely used in fire prevention tanks, drinking water tanks, irrigation tanks, agricultural and industrial chemical storage tanks.

[Brief explanation of the drawing]

Figure 1 is a front view of a corrugated pipe water tank.
FIG. 2 is a partially cutaway perspective view of the inner bag according to the present invention in an expanded state, and FIG. 3 is a partially omitted sectional view of a corrugated water storage tank provided with the inner bag. 1...Inner bag body, 4...Bag opening, 5...Flange, 5...Snap hook, 7...Water tank, 8...
…manhole.

Claims (1)

[Scope of utility model registration request] A water storage tank made of corrugated pipe and equipped with a watertight, flexible and collapsible bag, the bag body being able to fit tightly against the inner wall of the water storage tank, and having a bag opening corresponding to the water storage tank manhole. The flange at the top of the bag body is fixed by abutting on the flange of the water tank manhole, and the outer surface of the bag body is held at required points above the center to the inner wall of the water tank by means of connection such as snap hooks or hook fittings. A water tank made of corrugated pipe.