JPH0144958Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a heat storage tank installed in the underground part of a concrete building.

Conventional technology In conventional heat storage tanks, a heat insulating layer consisting of a large number of heat insulating blocks is provided on the inner surface of the concrete tank body, and a waterproof sheet covering this heat insulating layer is stretched over the tank body using a so-called insulation method. was. In such conventional heat storage tanks, underground water that enters between the inner surface of the tank body and the waterproof sheet through cracks in the concrete wall accumulates at the bottom of the tank body, so when the amount increases, the insulation block at the bottom of the tank body In severe cases, the insulation blocks may move from their original position and overlap with each other, resulting in an extremely unsightly appearance, as well as a marked decline in insulation and waterproof performance, resulting in poor durability. There was a problem. To solve this problem, when installing insulation blocks,
It was also possible to firmly fix each insulation block using a large number of joint pieces and fixing metal fittings, but this increased the number of man-hours and was extremely time-consuming, and moreover required a large number of joint pieces and fixing metal fittings. Therefore, there was a problem of high cost.

Purpose of the invention The purpose of this invention is to solve the above problems, to be able to securely fix the insulation block at the bottom of the tank body with great workability, and to prevent the insulation block from lifting up due to infiltrating groundwater. Therefore, it is possible to maintain excellent insulation and waterproof performance for a long period of time, and has excellent durability.Moreover, it requires less material costs and fewer man-hours, and construction costs are extremely low. The goal is to provide an inexpensive heat storage tank for the world.

Structure of the invention In order to achieve the above object, this invention provides a heat insulating layer consisting of a large number of heat insulating blocks on the inner surface of the bottom wall and peripheral side wall of the concrete tank body.
The gist is a heat storage tank in which a holding concrete layer is provided on the surface of a heat insulating layer on the bottom wall of the tank body, and a waterproof sheet is stretched over the holding concrete layer and the peripheral side wall of the tank body having the heat insulating layer.

Embodiment Next, an embodiment of this invention will be described based on the drawings.

In FIG. 1 showing the first embodiment of this invention,
The heat storage tank according to this invention is installed in the underground part of a concrete structure such as a building, and
Bottom wall 1a and peripheral side wall 1b of concrete tank body 1
Insulating layers 2a and 2b made up of a large number of insulating blocks 3 are provided on the inner surface of the tank, and a holding concrete layer 4 is provided on the surface of the insulating layer 2a on the bottom wall 1a of the tank body, and this holding concrete layer 4 and the Material layer 2b
A waterproof sheet 5 is stretched over the circumferential side wall 1b of the tank body.

In the above heat storage tank, as the heat insulating material block 3 constituting the heat insulating material layers 2a and 2b, resin foams such as polystyrene, polyvinyl chloride, polyurethane, and polyethylene are used. It is economically advantageous to use the body. The insulation block 3 is usually about 1 m wide, 2 m long, and about 20 to 100 mm thick.
Although the heat insulating material block 3 is used, the size and shape of the heat insulating material block 3 are of course arbitrary.

Insulation block 3 of the insulation layer 2a at the bottom of the tank body 1
The holding concrete layer 4 that holds down the
100mm, which includes ordinary concrete,
and cement mortar are used. In addition, in this specification, the holding concrete layer 4 shall be meant to include both of these.

On the other hand, the heat insulating material block 3 of the heat insulating material layer 2b provided on the inner surface of the circumferential side wall 1b of the tank body has a waterproof sheet 5.
It is held down to the concrete wall by a joint piece 6 and a fixing fitting 7 for tensioning. Here, the upper edge of the heat insulating material layer 2b is a joint piece 6 having an L-shaped cross section.
a, and the vertical part of the joint piece 6a is fixed to the concrete wall of the tank body 1 by a long fixture 7a. Further, the corner portion near the lower edge of the heat insulating layer 2b is held down by a joint piece 6b having an L-shaped cross section, and the vertical part of the joint piece 6b is fixed to the concrete wall of the tank body 1 with a long fixing fitting 7a. At the same time, the horizontal part is fixed to the holding concrete layer 4 by a short fixing metal fitting 7b.
The intermediate portion of the length of the heat insulating layer 2b is held down by a circular or flat plate-shaped joint piece 6c, and the joint piece 6c is fixed to the concrete wall by a long fixture 7a.

As these joining pieces 6, a plate material such as a hard or semi-hard synthetic resin plate, a metal plate, or a steel plate coated on one or both sides with vinyl chloride resin to improve adhesion is used.

As the fixture 7 for fixing the joint piece 6 to the concrete wall of the tank body 1 and the holding concrete layer 4, a spread nail, a curl plug, or the like is used.

The waterproof sheet 5 may be a thermoplastic synthetic resin sheet such as soft polyvinyl chloride, polyethylene, or polypropylene, or a non-washable rubber sheet.
Although a rubber asphalt sheet or the like is used, it is particularly preferable to use a soft polyvinyl chloride sheet from the viewpoint of adhesiveness. The thickness of this waterproof sheet 5 is usually 1.0 to 2.0 mm.

Such a waterproof sheet 5 includes the joint pieces 6a, 6b, 6c provided on the peripheral wall 1b of the tank body 1,
The intermediate joint piece 6c is fixed to the holding concrete layer 4 at the bottom of the tank body 1 by means of a short fixture 7b, and the corresponding portions are joined to provide a tensioned structure.

As the adhesive for joining the waterproof sheet 5 to the joint piece 6, epoxy-based, urethane-based, rubber-based adhesives, etc. can be used. In such cases, it is preferable to use tetrahydrofuran alone or a solvent-based adhesive prepared by dissolving a small amount of vinyl chloride resin in tetrahydrofuran, since this produces an adhesive effect with excellent durability. Note that if both the waterproof sheet 5 and the joining surfaces of the joining piece 6 are made of thermoplastic synthetic resin, they can also be joined by thermal fusion without using an adhesive.

Note that the connection piece 6c provided at the intermediate portion of the holding concrete layer 4 and the intermediate portion of the height of the tank body circumferential side wall 1b may be omitted in some cases.

In the above heat storage tank, since the large number of heat insulating blocks 3 constituting the heat insulating material layer 2a at the bottom of the tank body 1 are held down from above by the holding concrete layer 4, cracks in the concrete wall of the tank body 1 Even if groundwater were to infiltrate and accumulate at the bottom of the tank body 1, the weight of the holding concrete layer 4 would prevent the insulation block 3 from lifting at all, thus ensuring long-lasting insulation and waterproof performance. It cannot be damaged for a long time.

FIG. 2 shows a second embodiment of this invention. The difference from the first embodiment is that a base sheet 8 for preventing plasticizer migration and for curing is disposed on the entire back surface of the waterproof sheet 5. Such base sheet 8 may be a foam sheet with a thickness of 1 to 4 mm made of a closed foam of a thermoplastic resin such as polyethylene, polypropylene, polyurethane, or polyvinyl chloride, or a foam sheet of these foam sheets and a foam sheet such as polyethylene, polypropylene, polyvinyl chloride, etc. A composite sheet is used in which a reinforcing layer made of polyvinyl chloride and polyester films, or woven or nonwoven fabrics made of these resins is attached to the entire surface with an adhesive or by heating. When the waterproof sheet 5 is made of, for example, a soft vinyl chloride sheet and the insulation block 3 is made of polystyrene or polyvinyl chloride foam, the plasticizer in the waterproof sheet 5 transfers to the insulation block 3. In order to prevent this, it is particularly desirable to use a polyethylene or polypropylene film or foam, or a composite sheet of a foam of these resins and a resin film, woven fabric or non-woven fabric.

As shown in the figure, the base sheet 8 is attached to the joining piece 6.
It is held down together with the heat insulating material block 3 to the peripheral side wall 1b of the tank body 1 by the fixing metal fittings 7 and the heat insulating material block 3. Also, at the bottom of the tank body 1, there is a joint piece 6 and a fixing metal fitting 7.
It is held down by the holding concrete layer 4. At the bottom of the tank body 1, this base sheet 8 has a curing effect that protects the waterproof sheet 5 from the uneven surface of the concrete layer 4, and at the peripheral side of the tank body 1, it protects the waterproof sheet 5 from the uneven surface of the concrete layer 4. This serves to prevent the plasticizer from migrating to the heat insulating layer 2b.

FIG. 3 shows a third embodiment of this invention. Here, the difference from the case of the second embodiment is that the waterproof sheet 5 is made of a sheet made of a material that does not contain a plasticizer, or that the heat insulating material block 3 constituting the heat insulating material layer 2b is
If the tank is made of a material that is not affected by plasticizers, a base sheet 8 for curing is placed only on the bottom of the tank body 1, and the concrete layer 4 and waterproof sheet 5 are
It lies in the fact that it is interposed between.

The other points of these second and third embodiments are the same as those of the first embodiment, so the same parts are given the same reference numerals in the drawings.

Effects of the invention As described above, the heat storage layer according to this invention has a heat insulating material layer 2 consisting of a large number of heat insulating material blocks 3 on the inner surfaces of the bottom wall 1a and the peripheral side wall 1b of the concrete tank body 1.
a, 2b are provided, a holding concrete layer 4 is provided on the surface of the heat insulating layer 2a on the bottom wall 1a of the tank body, and a waterproof sheet is provided on the holding concrete layer 4 and the circumferential side wall 1b of the tank body having the heat insulating layer 2b. 5 is stretched, and the insulation layer 2a at the bottom of the tank body 1
Since a large number of insulation blocks 3 constituting the tank body 1 are held down from above by a holding concrete layer 4, groundwater can enter through cracks in the concrete wall of the tank body 1 and collect at the bottom of the tank body 1. Even if something happens, the holding concrete layer 4
The heat insulating material block 3 never lifts up due to the weight of the heat insulating material block 3, and therefore excellent heat insulating and waterproof performance can be maintained for a long period of time, resulting in excellent durability. In addition, the insulation block 3 at the bottom of the tank body 1 can be securely fixed with the concrete layer 4 with very good workability. Compared to the case where the structure is fixed, the material cost is less, the number of man-hours is less, and the construction cost is extremely low.

[Brief explanation of the drawing]

The drawings show embodiments of the heat storage tank according to this invention. Fig. 1 is a sectional view of the first embodiment, Fig. 2 is a sectional view of the second embodiment, and Fig. 3 is a sectional view of the third embodiment. It is. DESCRIPTION OF SYMBOLS 1... Tank body, 1a... Bottom wall, 1b... Surrounding wall, 2a, 2b... Heat insulation layer, 3... Heat insulation block, 4... Holding concrete layer, 5... Waterproof sheet, 6... Joint piece, 7...fixing metal fittings, 8...base sheet.

Claims (1)

[Scope of utility model registration request] Bottom wall 1a and peripheral side wall 1 of concrete tank body 1
Insulating layers 2a and 2b made of a large number of insulating blocks 3 are provided on the inner surface of tank b, and a holding concrete layer 4 is provided on the surface of the insulating layer 2a on the bottom wall 1a of the tank body. Insulation layer 2
A heat storage tank in which a waterproof sheet 5 is stretched over a peripheral side wall 1b of a tank body having a wall 1b.