JPH0221433Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a fixing device for a heat insulating block at a corner of a heat storage tank.

BACKGROUND ART Conventionally, a heat storage tank 22 provided in a concrete structure 21 is constructed of a large number of heat insulating material blocks 24 laid out along concrete walls 27 and 28 to be waterproofed, as shown in FIG. 4, for example. A heat insulating material layer 23 is provided, and this insulating material layer 23 is covered with a base sheet 25 for preventing plasticizer migration and for curing, and all the heat insulating blocks 24 are attached to concrete together with the base sheet 25 by joint pieces 30 and fixing tools 31. The waterproof sheet 26 was fixed to the walls 27 and 28, and the waterproof sheet 26 was stretched by joining these joint pieces 30 and the waterproof sheet 26 (for example,
(See Publication No. 45273).

Problems to be solved by the invention However, in such a conventional heat storage tank 22, the concrete walls 27, 28 and the waterproof sheet 26
If groundwater enters the insulation layer 23 between the two, for example through cracks in the concrete walls 27 and 28, the insulation block 24 will absorb water, resulting in a decrease in insulation performance. Furthermore, in the conventional heat insulating and waterproofing device, all of the heat insulating blocks 24 are fixed to the concrete walls 27 and 28 from above the base sheet 25 using the joining pieces 30 and fixtures 31. In order to prevent the corners from lifting up, it is necessary to press down the four corners of each insulating material block 24, but it is very difficult to distinguish the four corners of the insulating material block 24 from above the base sheet 25. Particularly in the peripheral side wall portion of the heat storage tank 24, it is necessary to fix the base sheet 25 and the heat insulating material block 24 while holding down the heat insulating material block 24, which poses a problem of extremely poor workability. Furthermore, in the conventional heat storage tank 22, a joint piece 30 having an L-shaped cross section is arranged at the corner of the concrete walls 27, 28, and both sides of this joint piece 30 are connected to the insulation blocks 24, 24 and the base sheet 25. They were fixed from above with fixtures 31, 31, respectively. However, this poses a problem in that it is not easy to fix the joining piece 30 and the heat insulating material blocks 24, 24.

Furthermore, it is already known to cover the entire surface of each heat insulating material block constituting the heat insulating material layer covering the surface of the concrete wall that is to be insulated and waterproofed in the heat storage tank with a sealing sheet (for example, in Japanese Patent Application Laid-Open No. 1986 −92833
However, in this conventional heat storage tank, in order to prevent the corners of the insulation blocks from lifting up at the corners of the concrete wall, the corners of each insulation block are held down using fixtures. and
This posed a problem in that fixing the insulation block was extremely difficult.

The purpose of this invention is to solve the above-mentioned problems of the conventional technology, to maintain the heat insulation and waterproof performance of the heat storage tank for a long period of time, and of course to have excellent durability. The work of fixing sealing sheet-coated insulation blocks at the corners of concrete walls can be done extremely easily and reliably, and the workability is extremely high.In turn, the insulation and waterproofing of heat storage tanks can be done easily and quickly. can be done. An object of the present invention is to provide a device for fixing a heat insulating block at a corner of a heat storage tank.

Means for Solving the Problems In order to achieve the above object, this invention provides a heat insulating material layer consisting of a large number of heat insulating material blocks on the surface of a concrete wall that should be prevented from being insulated. The surface is covered with a sealing sheet, these sealing sheet-covered insulation blocks are fixed to the concrete wall with joint pieces and fixings, and a waterproof sheet is stretched to cover all of these sealing sheet-covered insulation blocks. At the corner of the concrete wall to be insulated and waterproofed, in the heat storage layer, there is a strip-like connection part with the same width as the thickness of the sealing sheet-covered insulation block, and a strip-like connection part is installed at right angles to one side edge of this connection part. A first strip-shaped part that is continuous and has the same width as the thickness of the sealing sheet-coated insulation material block, and a sealing sheet that is continuous at a right angle on the opposite side of the first strip-shaped part and is attached to the other side edge of the connecting part. A joint piece having a substantially square cross section and a second strip-shaped portion having a required width for holding down the covering insulation material block is arranged,
By fixing the first strip-shaped part of this joint piece to one concrete wall with the fixing device with its tip abutting against the other concrete wall, both sides of the connecting part of this joint piece are fixed. , spaces for inserting the ends of the insulation blocks that are open upward and sideways are formed, and the ends of the insulation blocks covered with the sealing sheet of the insulation layer covering the surfaces of both concrete walls are inserted into these spaces. The gist is a fixing device for a heat insulating block at a corner of a heat storage tank, which is inserted and fixed.

According to the device for fixing the heat insulating material block at the corner of the heat storage tank, the first strip-like part of the joint piece having a substantially square cross section, which is placed at the corner of the concrete wall to be insulated and waterproofed, is fixed. By simply fixing it to one concrete wall with a fixing tool, spaces for inserting the ends of the heat insulating block that are open upwardly and laterally are formed on both sides of the connecting portion of this joint piece. Therefore, these blocks can be securely fixed by simply inserting the ends of the insulation blocks covered with the sealing sheet of the insulation layer that covers the surfaces of both concrete walls into these spaces, which is extremely convenient. be.

Of course, the entire surface of each insulation block is covered with a sealing sheet, so even if groundwater enters between the concrete wall surface and the waterproof sheet through cracks in the concrete wall of the heat storage tank, the insulation block will absorb water. Therefore, the heat storage tank can maintain excellent heat insulation and waterproof performance for a long period of time, and has excellent durability.

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

In FIGS. 1 to 3 showing an embodiment of this invention, a heat storage tank 2 is installed in the underground part of a concrete structure 1.
is provided, and a heat insulating material layer 3 is provided on the inner surface of the concrete bottom wall 7 and the peripheral side wall 8, respectively. Each insulation layer 3 has a width of 1 m x a length of 2 m, for example.
It is composed of a large number of heat insulating blocks 4 having a size of m, and the entire surface of each insulating block 4 is covered with a plasticizer migration prevention/sealing sheet 5. These airtight sheet-coated insulation blocks 4 are laid out on the surfaces of the concrete bottom wall 7 and the peripheral side walls 8, and are fixed to the bottom wall 7 and the peripheral side walls 8 with joint pieces 10 and fixtures 11 as follows. be done.

That is, at the corner of the concrete bottom wall 7 and the peripheral side wall 8 of the heat storage tank 2 that are to be insulated and waterproofed, there is a strip-like connecting portion 15 having the same width as the thickness of the sealing sheet-covered heat insulating material block 4; A first strip-like portion 1 that extends perpendicularly to one side edge of the connecting portion 15 and has the same width as the thickness of the sealing sheet-covered heat insulating material block 4.
4, and a second strip-shaped portion 16 that extends at a right angle to the opposite side of the first strip-shaped portion 14 on the other side edge of the connecting portion 15 and has a required width to hold the sealing sheet-covered heat insulating material block 4. A joining piece 10b having a substantially square cross section is arranged. The first strip-shaped portion 14 of this joint piece 10b is fixed to one concrete bottom wall 7 by the fixture 11 with its tip abutted against the other concrete peripheral side wall 8. Therefore, on both sides of the connecting portion 15 of this joining piece 10b, that is, connecting portion 1 of the joining piece 10b.
5 and the concrete circumferential side wall 8, and between the second strip-shaped portion 16 of the joining piece 10b and the concrete bottom wall 7, there is a space for inserting the end of the heat insulating material block, which opens upwardly and laterally. Sections 17 and 18 are formed respectively. Therefore, the ends of the sealing sheet-coated insulation blocks 4, 4 of the insulation layers 3, 3 covering the surfaces of both the concrete bottom wall 7 and the peripheral side wall 8 are as follows:
It can be fixed simply by inserting it into these spaces 17 and 18, respectively.

Note that a joining piece 10a having a square cross section is also used at the peripheral edge 3a of the heat insulating material layer 3, and the upper vertical part of this joining piece 10a is fixed to the peripheral side wall 8 by a fixture 11. and the same joint piece 10
The upper end portion of the sealing sheet-covered heat insulating material block 4 of the heat insulating layer 3 covering the surface of the peripheral side wall 8 is only held down by the lower vertical portion of a. Furthermore, circular joint pieces 10c are used in the middle part of the heat insulating material layer 3, and these joint pieces 10c are arranged so as to press the four corners of the sealing sheet-covered heat insulating material block 4, and are attached to the bottom wall by fixing devices. 7 and the peripheral side wall 8. Such an intermediate joint piece 10
The shape of c is not limited to a circular shape, but may be oval, square, etc., and a long strip-like joining piece may be used.

A waterproof sheet 6 is placed over the entire surface of the heat insulating layer 3, which is made up of a large number of sealing sheet-coated insulating blocks 4, and the waterproof sheet 6 covers the entire surface of the insulating layer 3 at the peripheral edge 3a and corner 3b of the insulating layer 3. Corresponding parts are joined to joint pieces 10a and 10b, respectively.
Note that the middle part of the waterproof sheet 6 is an intermediate joint piece 10.
c, but may not be bonded depending on the case.

In the heat storage tank 2, a closed foam of resin such as polystyrene or polyvinyl chloride is used as the heat insulating material block 4 constituting the heat insulating material layer 3. Among these, polystyrene foam is particularly used. is economically advantageous. The thickness of the heat insulating material block 4 is about 20 to 100 mm, and the size and shape of the heat insulating material block 4 are, of course, arbitrary, although those having a width of about 1 m and a length of about 2 m are usually used.

Further, as the waterproof sheet 6, a sheet made of thermoplastic synthetic resin such as soft polyvinyl chloride is used. The thickness of this waterproof sheet 6 is usually about 1.0 to 2.0 mm.

The sealing sheet 5 that wraps each insulating block 4 of the insulating layer 3 has the function of sealingly covering the insulating block 6 and the plasticizer that prevents the plasticizer from the waterproof sheet 6 from migrating to the insulating block 4. It has the effect of preventing agent migration. Such a sealing sheet 5
Examples include foamed sheets with a thickness of 1 to 4 mm made of closed foam of thermoplastic resins such as polyethylene and polypropylene, or these foamed sheets and films of polyethylene, polypropylene, and polyester, or woven fabrics made from these resins. A composite sheet is used in which a reinforcing layer made of cloth or nonwoven fabric is attached to the entire surface with an adhesive or by heating.

Further, as the joining piece 10, a hard or semi-hard synthetic resin plate, a metal plate, or a plate material such as a steel plate coated with vinyl chloride resin on one or both sides to improve adhesion is used.

As the fixing device 11 for fixing the joint piece 10 to the concrete bottom wall 7 and the peripheral side wall 8, a spread nail, a curl plug, or the like is used.

As the adhesive for joining the waterproof sheet 6 to the joint piece 10, 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 6 and the joining surfaces of the joining piece 10 are made of thermoplastic synthetic resin, they can be joined by thermal fusion without using an adhesive.

In the heat storage tank 2, a large number of sealing sheet-covered heat insulating material blocks 4 constituting the heat insulating material layer 3 are first fixed to the concrete bottom wall 7 and the peripheral side wall 8 using joint pieces 10 and fixtures 11. Therefore, the four corners of each sealing sheet-coated insulation block 4 can be firmly held down, and therefore the insulation block 4 can be firmly held down.
It is possible to reliably prevent the corners from lifting up, and it is also extremely easy to work with. In particular, at the corner of the concrete bottom wall 7 and the peripheral side wall 8 that should be insulated and waterproofed, the first strip-shaped portion 14 of the joint piece 10b having a substantially square cross section is fixed to one of the concrete bottom walls 7. Just fix it with the tool 11,
Spaces 17 and 18 for inserting the end portions of the heat insulating material block are formed on both sides of the connecting portion 15 of the joint piece 10b, respectively, and open upwardly and laterally.

Therefore, by simply inserting the ends of the sealing sheet-coated insulation blocks 4, 4 of the insulation layers 3, 3 covering the surfaces of both concrete walls 7, 8 into these spaces 17, 18, these blocks 4 , 4 can be securely fixed, which is very convenient.

Further, when the waterproof sheet 6 is stretched over the circumferential wall 8 of the heat storage tank 2, there is no need to hold down the heat insulating material block 4, and the stretching work can be easily performed. Furthermore, even if groundwater enters between the concrete wall surface and the waterproof sheet 6 through cracks between the concrete bottom wall 7 and the peripheral side wall 8 when the heat storage tank 2 is used, the heat insulating material block 4 is covered by the sealing sheet 5. The heat storage tank has excellent durability because it does not absorb water and can maintain excellent insulation and waterproof performance for a long period of time. Furthermore, since the insulation blocks 4 are individually covered with a plasticizer migration prevention/sealing sheet 5, the migration of plasticizer from the waterproof sheet 6 is prevented, and the insulation blocks 4 are prevented from being attacked by the plasticizer. There isn't.

Effects of the invention As mentioned above, in this invention, a heat insulation layer consisting of a large number of heat insulation blocks is provided on the surface of a concrete wall to be insulated and waterproof, and the entire surface of each heat insulation block is covered with a sealing sheet. In a thermal storage tank, these sealing sheet-coated insulation blocks are fixed to a concrete wall with joint pieces and fixing devices, and a waterproof sheet is stretched to cover all of these sealing sheet-coated insulation blocks. At the corner of the concrete wall where the concrete wall is to be constructed, there is a strip-like connecting part having the same width as the thickness of the sealing sheet-covered insulation material block, and a sealing sheet-covered insulation material block that extends perpendicularly to one side edge of this connection part. a first strip-shaped portion having the same width as the thickness of the first strip-shaped portion, and a required width that extends at a right angle to the opposite side of the first strip-shaped portion on the other side edge of the connecting portion and holds the sealing sheet-coated insulation material block. A joint piece having an approximately square cross section and a second strip plate-like portion having
By fixing the strip part to one concrete wall with the fixing device with its tip abutting against the other concrete wall, the strip part is fixed on both sides of the connecting part of this joint piece, upwardly and laterally. Open spaces for insertion of the ends of the insulation blocks are formed, and the ends of the insulation blocks coated with the sealing sheet of the insulation layer covering the surfaces of both concrete walls are inserted into these spaces and fixed. Of course, it is possible to maintain the heat insulation and waterproof performance of the heat storage tank for a long period of time, and it is excellent in durability. The fixing work of the blocks can be carried out very easily and reliably, and the workability is very good, and furthermore, the heat-insulating and waterproofing work of the heat storage tank can be carried out easily and quickly.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a heat storage tank showing an embodiment of this invention, FIG. 2 is a sectional view taken along the line - FIG. 1, and FIG. 3 is an enlarged sectional view of a heat insulating block covered with a sealing sheet. FIG. 4 is a longitudinal sectional view of a conventional heat storage tank. 1... Concrete structure, 2... Heat storage tank, 3
...Insulating material layer, 4...Insulating material block, 5...Sealing sheet, 6...Waterproof sheet, 7...Concrete bottom wall, 8...Concrete peripheral side wall, 10,
10b...Joining piece, 11...Fixing tool, 14...First strip-like portion, 15...Strip-like connecting portion, 16...Second strip-like portion, 17, 18...Insulating material block end Space for insertion.

Claims (1)

[Scope of utility model registration request] A heat insulating layer 3 consisting of a large number of heat insulating blocks 4 is provided on the surfaces of the concrete walls 7 and 8 to be insulated and waterproof, and the entire surface of each insulating block 4 is covered with a sealing sheet 5. The insulation block 4 is fixed to the concrete walls 7 and 8 by the joint piece 10 and the fixture 11, and the waterproof sheet 6 is attached to these sealing sheet-coated insulation blocks 4.
In the heat storage layer 2, which is stretched so as to cover all of 15, a first strip-shaped portion 14 that extends perpendicularly to one side edge of this connecting portion 15 and has the same width as the thickness of the sealing sheet-covered heat insulating material block 4, and the other side edge of the connecting portion 15. A joint piece having a substantially square cross section and having a second strip-shaped portion 16 extending at right angles to the opposite side of the first strip-shaped portion 14 and having a required width to hold the sealing sheet-covered heat insulating material block 4 at the portion thereof. 10b is arranged, and the first strip-shaped portion 14 of this joint piece 10b is fixed to one concrete wall 7 with the end thereof abutted against the other concrete wall 8 by the fixture 11. , spaces 17 and 18 for inserting the ends of the insulation block are formed on both sides of the connecting portion 15 of the joint piece 10b, and are open upwardly and laterally, and in these spaces 17 and 18, both concrete walls 7 are inserted. , 8. A device for fixing a heat insulating material block at a corner of a heat storage tank, in which the end portions of the heat insulating material blocks 4, 4 covered with sealing sheets of the heat insulating material layers 3, 3 covering the surfaces of the heat storage tanks 3, 8 are respectively inserted and fixed.