JP2883961B2 - Insulation waterproofing device for floating roof in floating roof tank - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for insulating and waterproofing a floating roof in a floating roof tank.

2. Description of the Related Art Conventionally, in order to insulate and waterproof a circular floating roof of a floating roof type tank, a rectangular insulating material having a predetermined size is laid on the upper surface of a steel deck of the floating roof, and the insulating material is placed on top of the insulating material. For example, a waterproof sheet made of a high-strength polyvinyl chloride-coated steel sheet (hereinafter, referred to as a PVC steel sheet) was coated thereon.

However, a floating roof steel deck. It is manufactured by sequentially joining steel plates of the required size by welding.In order to check the aging of the welds due to rust over time, it is necessary to remove all welds and lay thermal insulation. Was.

Therefore, the heat insulating materials are laid out so that a required number of heat insulating materials are collectively formed to form a large number of heat insulating material blocks and the blocks are parallel to each other.

Thereby, on the upper surface of the circular deck, the edge insulation block located inside the steel plate welded portion and near the peripheral edge of the circular deck, and also inside the steel plate welded portion and having a square shape as viewed from the plane. An intermediate insulation block was formed.

A top surface waterproof sheet made of a PVC steel sheet is put on the upper surface of each heat insulating material block, and a band-shaped side waterproof sheet made of a PVC sheet is put on the side peripheral surface of the block. In order to improve the efficiency of
A corner member made of a PVC steel plate was covered on a corner portion of the heat insulating material block.

Problems to be Solved by the Invention However, among the heat insulating blocks on the circular deck of the floating roof, in particular, in the edge heat insulating block located near the peripheral edge of the circular deck, a part or all of the constituent heat insulating material is used. The triangular heat insulating material is cut in order so as to substantially coincide with a part of the circumference of the deck, and has a sharp corner at the tip, and the angle of the acute corner of the triangular heat insulator is reduced. In the past, corner members were manufactured and used in accordance with the angles, since they differed sequentially according to the position of the circumference of the deck. Not only is it easy to make mistakes in picking up materials and processing steel plates, but it is also very troublesome to store and manage several types of corner members. If it takes time to align the corner members, or if a corner member whose angle does not match is used, there is a problem in that work on the site is hindered.

An object of the present invention is to solve the above-mentioned problems of the prior art,
Even if the acute corners of the triangular insulation of the edge insulation block are sequentially different depending on the position of the circumference of the deck, it is sufficient to use only one kind of corner member, which makes it possible to manufacture the corner member. It is very easy to use, there is no mistake in picking up materials and processing of steel plates, and only one type of corner member is used, so the storage and management of corner members is extremely easy. The corner members can be positioned quickly on site, greatly shortening the time required for on-site work.In addition, there is no need to worry about using corner members that do not match the angle. An object of the present invention is to provide a device for insulating and waterproofing a floating roof in a floating roof tank, which can be performed efficiently and reliably.

Means for Solving the Problems In order to achieve the above object, the present invention provides a large number of heat insulating blocks on a top surface of a circular floating roof deck, in which a required number of square heat insulating materials having a predetermined size are grouped together. And the blocks are laid so that the blocks are parallel to each other, so that an edge insulation block located near the periphery of the circular deck and an intermediate insulation block that is rectangular as viewed from a plane are formed. A part or all of the heat insulating material constituting each of the edge heat insulating blocks is sequentially cut so as to substantially coincide with a part of the circumference of the deck, and a triangular heat insulating material having an acute corner portion at a tip end. Is formed, in the floating roof type tank, the acute angle corner of the triangular heat insulating material of each edge heat insulating block is cut off at a required portion according to the angle, the predetermined length Cutting An end portion is formed, and an upper surface waterproof sheet made of a synthetic resin-coated metal plate is placed on the upper surface of each edge heat insulating material block except for the upper surface peripheral portion of the block, and a side peripheral surface of the block is provided. An upper horizontal portion made of a synthetic resin-coated metal plate and covering the peripheral portion of the upper surface of the block, a vertical portion covering the side surface of the block, and a lower horizontal portion abutting on the upper surface of the deck. The band-shaped side tarpaulin is
Except for the cut end of the triangular heat insulator of the same block, the cut end of the triangular heat insulator of the edge heat insulator block is covered with a corner member made of a synthetic resin-coated metal sheet waterproof sheet. The corner member comprises a fan-shaped upper horizontal portion as viewed from a plane having a required angle, a vertical portion provided along an arc-shaped edge of the upper horizontal portion, and a lower horizontal portion abutting on the upper surface of the deck. The cut end of the triangular heat insulating material of the edge heat insulating block is formed inside the opening of the corner member so that the cut end of the triangular heat insulating material has an arc-shaped vertical portion as viewed from the plane of the corner member. The peripheral portion of the upper surface waterproof sheet covering the upper surface of the edge insulating block and the upper horizontal portion of the band-shaped side surface waterproof sheet covering the same side surface are spaced from each other by a predetermined gap. This gap is arranged in a butt shape A stretchable band-shaped connecting sheet is provided so as to straddle, and an edge of the connecting sheet is joined to a side edge of the upper waterproof sheet and a connecting side edge of the side waterproof sheet, and a corner is formed. At both connection side ends of the member, the connection side ends of the strip-shaped side surface waterproof sheet are arranged in abutting manner with a predetermined gap therebetween, and a stretchable band-shaped connection sheet is passed over the gap. Wherein the edge of the connection sheet is joined to the connection side end of the corner member and the connection side end of the belt-shaped side waterproof sheet, wherein the heat insulation and waterproofing device for the floating roof in the floating roof type tank is provided. It is a gist.

According to the insulating and waterproofing device for the floating roof, the acute-angled corners of the triangular-shaped heat insulating material of each edge heat insulating block are cut off at required portions in accordance with the angle regardless of the circumferential position of the deck. Since a cut end having a predetermined length is formed, a cut end of the triangular heat insulating material may be covered with one type of corner member, and depending on the circumferential position of the deck, an edge heat insulating material block may be formed. Even if the angles of the acute corners of the triangular heat insulating material are sequentially different, these include cutting of the upper surface waterproof sheet, cutting of the connecting side end of the strip-shaped side waterproof sheet, and lower horizontal portion of the acute angle corner member. Any of these can be dealt with by cutting the plate material.

Therefore, just using one type of corner member,
It can cope with various angles of the sharp corners of the edge insulation block, making it very easy to manufacture corner members, and no mistakes occur in picking up materials and processing steel plates. Since only one type of corner member is used, storing and managing the corner members is extremely simple.

In addition, the corner members can be positioned quickly on site, greatly reducing the time required for on-site work.In addition, there is no need to worry about using corner members that do not match the angle. It can be performed efficiently and reliably.

Next, an embodiment of the present invention will be described with reference to the drawings.

First, in FIG. 3, a steel deck (1) of a floating roof (10) of a floating roof type oil storage tank is formed by sequentially welding thin steel plates having a required size and a thickness of, for example, 4.5 mm. This deck (1) is made of a welded part (A) that is rusted over time.
In order to check for aging, all the welded parts (A) are removed, a heat insulating material (2) is laid, and then waterproofing is performed using a waterproof sheet made of a PVC steel sheet.

The heat insulating material (2) is rectangular, for example, made of expanded polystyrene resin and has a predetermined size of 2 m in length and 1 m in width. Of the circular deck (1) inside each weld (A) of the deck (1) and laid so as to form the heat insulating material blocks (3) and the blocks (3) being parallel to each other. An edge insulation block (3a) located near the periphery and an intermediate insulation block (3b) inside each welded portion (A) of the deck (1) and rectangular when viewed from a plane.
Are formed.

As shown in FIGS. 1 and 5, in the edge heat insulating material block (3a) located near the peripheral edge of the circular deck (1), a part of the constituent heat insulating material (2) is partially replaced by the deck (1). ) Are cut in order so as to substantially coincide with a part of the circumference, and a triangular heat insulating material (2a) having a sharp corner portion at the tip is formed. As shown in FIG. The angle of the acute corner of the triangular insulation material (2a) is the deck (1)
Sequentially varies depending on the position of the circumference.

Of all insulation blocks (3) on deck (1) of circular floating roof (10), each edge insulation block (3a)
The acute angle corner of the triangular heat insulating material (2a) is cut off at a required portion according to the angle (θ),
A cut end (8) having a predetermined length is formed.

FIG. 1 shows a case where the angle (θ) of the acute corner of the triangular heat insulating material (2a) is 30 °.
FIG. 11 and FIG. 12 show the case where the angles (θ) of the acute corners of the triangular heat insulating material (2a) are 60 ° and 80 °, respectively.

Each edge insulation block (3a) is covered with a waterproof sheet made of a PVC steel sheet as follows.

First, as shown in FIG. 1, FIG. 5 and FIG. 6, on the upper surface of the edge heat insulating material block (3a), a top surface waterproof sheet (5) made of a PVC steel plate is provided. And an upper horizontal portion (6a) made of a PVC steel plate and covering a peripheral edge of an upper surface of the block (3a), and a vertical portion covering a side surface of the block (3a) on the side peripheral surface of the block (3a). Section (6b) and a lower horizontal section (6a) abutting on the upper surface of the deck (1) have a substantially band-shaped side waterproof sheet (6) having a triangular shape of the block (3a). A sharp corner made of PVC steel plate is placed on the cut end (8) of the triangular heat insulator (2a) of the edge heat insulator block (3a) except for the cut end (8) of the heat insulator (2a). Member (7)
Is covered. In addition, the other two right-angle corners of the edge insulation block (3a) are provided with right-angle corner members (17).
Is covered.

In addition, a strip-shaped side surface having cutouts (18) and (19) in the upper horizontal part (6a) and the lower horizontal part (6c) is provided at another sharp corner of the exquisite thermal insulation block (3a). Waterproof sheet (6).

Here, the acute angle corner member (7) is formed as shown in FIGS.
As shown in the figure, for example, a fan-shaped upper horizontal portion (7a) as viewed from a plane having an angle of 135 °, a vertical portion (7b) provided along an arc-shaped edge thereof, and a deck (1). It has a lower horizontal portion (7c) in contact with the upper surface, and has a substantially sectional shape.

Then, the cut end (8) of the triangular heat insulator (2a) of the edge heat insulator block (3a) is positioned inside the opening of the acute angle corner member (7) as viewed from the plane of the corner member (7). It is housed so that it passes over both ends of the vertical part (7a) of an arc shape.

The peripheral portion of the upper surface waterproof sheet (5) covering the upper surface of the edge heat insulating material block (3a) and the upper horizontal portion (6a) of the strip-shaped side waterproof sheet (6) covering the same side surface are spaced apart from each other by a predetermined distance. Each of the two strip-shaped side tarpaulins (6) and (6) is arranged in abutting manner at (9), and is provided on both connecting side ends (7A) and (7A) of the acute angle corner member (7). One connection side end (6A) (6A) is arranged in abutting manner at a predetermined interval (9).

The lower horizontal portion (7c) of the acute angle corner member (7) abutting on the upper surface of the deck (1) is an outer edge of the lower horizontal portion (6c) (6c) of the both-belt side waterproof sheets (6) and (6). The outer part (7d) (7d) is cut off from the extension of the above.

As shown in FIGS. 11 and 12, if the angle (θ) of the acute corner of the triangular heat insulator (2a) of the edge heat insulator block (3a) is different, the heat insulator is cut off accordingly. Although the size of the part is different, the length of the cut end (8) of the triangular heat insulating material (2a) is, for example, 185 mm,
To be constant.

The angle (θ) of the acute corner of the triangular heat insulating material (2a) is 30 ° (see FIG. 1), 60 ° (see FIG. 11),
In the case of 80 ° (see FIG. 12), the size of the cut-out portions (7d) (7d) of the lower horizontal portion (7c) of the corner member (7) also differs.

Although the detailed illustration is omitted, if the angle (θ) of the acute corner of the triangular heat insulating material (2a) is different, the two connecting side ends () of the acute angle corner member (7) are correspondingly changed. The lengths of the connection side ends (6A) (6A) of the two band-shaped side surface waterproof sheets (6) (6) arranged in abutting fashion on 7A) and (7A) also differ.

For example, when the angle (θ) of the acute angle corner of the triangular heat insulating material (2a) is 60 ° (see FIG. 11), the connection side end (7A) of the acute angle corner member (7) and the belt-like shape are formed. The length of the connection side end (6A) of the side waterproof sheet (6) is substantially equal when viewed from the plane, but even if the angle (θ) is smaller than this (in the case of FIG. 1), Or, even if it becomes large (in the case of FIG. 12), the length of the connection side end (6A) on the side of the strip-shaped side waterproof sheet (6) becomes long.

Therefore, in such a case, at the connection side end portions (6A) of the two strip-shaped side surface waterproof sheets (6), (6), the front end portions of these upper horizontal portions (6a), (6a) are connected. In this case, the leading ends of the overlapping upper horizontal portions (6a) and (6b) may be appropriately cut so that there is an interval (9) of a required width therebetween. This can be dealt with by cutting off the connection side end of the strip-shaped side surface waterproof sheet (6) or cutting off the lower horizontal portion (7c) of the acute angle corner member (7).

The right angle corner member (17) is shown in FIG.
As shown in the figure, the upper horizontal part (17
a), a vertical portion (17b) substantially L-shaped when viewed from above, and a lower horizontal portion (17c) abutting on the upper surface of the deck (1), and have a substantially cross-sectional shape.

Two ends of the right-angled corner member (17)
The other connecting-side ends (6B) and (6B) of the two strip-shaped side surface waterproof sheets (6) and (6) are arranged in a butted manner with a predetermined gap (9) therebetween.

In the vicinity of the edge heat insulating block (3a), the lower horizontal portion (6c) of the strip-shaped side waterproof sheet (6), the lower horizontal portion (7c) of the acute angle corner member (7), and the right angle corner The lower horizontal portion (17c) of the member (17) is fixed to the deck (1) by a required number of stat pins (14).

Then, as shown in FIG. 7, the above-mentioned upper surface waterproof sheet (5) and side surface waterproof sheet (6), or the side surface waterproof sheet (6) and acute or right angle corner members (7) (17) And a band-like connecting sheet (11) having elasticity is passed over the gap (9) between
Both side edges of the connection sheet (11) are waterproof sheets (5) for the upper surface, side sheets (6), or corner members (7) (17) for the acute angle or right angle on both sides of the gap (9).
, Respectively.

When the angle (θ) of the acute corner of the triangular heat insulating material (2a) is as small as, for example, 30 °, as shown in FIG.
Since a triangular gap is formed on the extension of c), a triangular connection sheet (11a) having the same shape and a slightly larger eye may be covered so as to cover the gap.

Finally, as shown in FIGS. 4 and 8, a non-combustible strip-shaped covering sheet (12) is put on the above-mentioned elastic strip-shaped connecting sheet (11), and both side edges thereof are sealed. They are joined by a combined adhesive (13).

The same non-combustible strip-shaped covering sheet (12a) is also placed on the triangular connecting sheet (11a) (see FIG. 8).

By the way, the gap (9) allows the expansion and contraction of the waterproof sheets (5) and (6) due to a temperature difference, and is preferably, for example, 10 to 60 mm.

As the belt-like connecting sheet (11), a sheet made of a soft polyvinyl chloride thermoplastic synthetic resin or a sheet made of a non-vulcanized rubber is used, and a sheet made of a soft polyvinyl chloride is particularly used in terms of adhesiveness. Is preferred. This band-shaped connecting sheet (11) has a width of, for example, 100 to 200 m and a thickness of about 100 to 200 m.
1.0 to 2.0 mm.

Waterproof sheets (5) (6) and corner members (7)
As the adhesive for joining the belt-shaped connecting sheet (11) and the band-shaped connecting sheet (11), silicone-based, urethane-based and rubber-based adhesives can be used, and particularly, the waterproof sheets (5) and (6) and the corner outside (7) are used. If the joining surfaces of the connection sheet (11) are both made of vinyl chloride resin, use tetrahydrofuran alone or a solution-type adhesive obtained by dissolving a resin such as vinyl chloride resin or a copolymer of vinyl chloride and vinyl acetate in tetrahydrofuran. It is desirable to use.

Although not shown, an upper surface waterproof sheet (5) made of a PVC steel sheet is placed on the upper surface of the intermediate heat insulating material block (3b) which is rectangular as viewed from the plane, leaving the peripheral portion of the block (3b). And 4 of the insulation block (3b)
The right-angle corner members (17) similar to the above are disposed at the two right-angle corners.

As in the case described above, a side-surface waterproof sheet (6) having a substantially horizontal cross section is put on the side peripheral surface of the intermediate heat insulating material block (3b) except for the corners, and the upper surface waterproof sheet ( 5) A strip-shaped connecting sheet (11) having elasticity is passed over and bonded to each of the gaps (9) of the strip-shaped side waterproof sheet (6) and the right-angle corner member (17). After that, the non-combustible strip-shaped covering sheet (12) is covered on the stretchable strip-shaped connecting sheet (11).

For example, as shown in FIG.
A predetermined gap (9) is provided between a) and the intermediate heat insulating material block (3b), and each welded portion (A) of the deck (1) is located in this gap (9). ing. A stretchable and transparent band-shaped connecting sheet (11) is passed over the gap (9), and both side edges of the connecting sheet (11) are attached to both sides of the gap (9). (6)
It is joined to the lower horizontal part (6c) (6c) of (6). In addition, on this elastic strip-shaped connecting sheet (11),
A non-combustible strip-shaped covering sheet (12) is covered, and both side edges of the sheet are joined by a seal / adhesive (13).

Since the strip-shaped connecting sheet (11) is transparent, after the steel deck (1) of the floating roof (10) is manufactured, when checking the aging of the welded part (A) due to rust over time, use a non-combustible strip. It is sufficient to peel off the covering sheet (12).

As shown in Fig. 10, the periphery of the deck (1) of the floating roof (10) of the crude oil storage tank and the pontoon (floating body)
Joint pieces (16) and (16) each made of a PVC steel plate are fixed to the side wall (20) of (15) by stud pins (14).

A predetermined gap (9) is provided between the heat insulating material block (3) and the side wall (20) of the pontoon (15), and each welded portion of the deck (1) is provided in the gap (9). (A)
Is located. A stretchable and transparent band-shaped connecting sheet (11) is passed over the gap (9), and both side edges of the connecting sheet (11) are attached to both sides of the gap (9). It is joined to the lower horizontal part (6c) and the joining piece (16) of (6). Further, a non-combustible strip-shaped covering sheet (12) having a substantially L-shaped cross section having a vertical portion and a horizontal portion is put on the transparent connection sheet (11),
The vertical part of this is along the inner surface of the side wall (20) of the pontoon (15), and is bonded to the vertical part of the transparent connecting sheet (11) with an adhesive. To the lower horizontal part (6c) of the waterproof sheet (6).

When checking the aging of the welded portion (A) due to rust over time, the non-combustible strip-shaped covering sheet (1
It is good if you peel off 2).

The required height of the side wall (20) of the pontoon (15)
A covering member (21) that covers the upper end of each of the joining piece (16), the transparent connection sheet (11), and the incombustible strip-shaped covering sheet (12), and a substantially inverted L-shaped drainer cover (22) above the covering member (21) ) Is attached.

According to the above embodiment, since the elastic strip-shaped connecting sheet (11) does not appear on the surface of the deck (1), the entire floating roof (10) has a structure that conforms to the nonflammable standard.

In the above embodiment, the top waterproof sheet (5), the strip-shaped side waterproof sheet (6), the acute-angle corner member (7) and the right-angle corner member (17), or the non-combustible strip-shaped covering sheet (12) ) Are each made of a double-sided polyvinyl chloride coated steel sheet, but they may be made of other synthetic resin coated steel sheets coated on both sides with a fluororesin or the like.

Advantageous Effects of the Invention As described above, the present invention provides a structure in which a required number of rectangular heat insulating materials having a predetermined size are collectively formed on the upper surface of a deck of a circular floating roof to form a large number of heat insulating material blocks. Are arranged in parallel so that an edge insulation block located near the periphery of the circular deck and an intermediate insulation block that is rectangular as viewed from a plane are formed. A part or all of the constituent heat insulating material is sequentially cut so as to substantially correspond to a part of the circumference of the deck, and a triangular heat insulating material having a sharp corner at the tip is formed. In the roof-type tank, the acute-angled corners of the triangular heat-insulating material of each edge heat-insulating block are cut off at required portions in accordance with the angle to form cut ends of a predetermined length, Each edge The upper surface waterproof sheet made of a synthetic resin-coated metal plate is covered on the upper surface of the heat insulating material block except for the upper peripheral edge of the block, and the side peripheral surface of the block is formed of a synthetic resin-coated metal plate and the block. An upper horizontal portion that covers the peripheral portion of the upper surface of the block, a vertical portion that covers the side surface of the block, and a lower horizontal portion that abuts on the upper surface of the deck have a band-shaped side waterproof sheet having a substantially horizontal cross section. A corner member made of a synthetic resin-coated metal sheet waterproof sheet is covered on the cut end of the triangular heat insulating material of the edge heat insulating block, except for the cut end of the triangular heat insulating material. The corner member is composed of a fan-shaped upper horizontal portion as viewed from a plane having a required angle, a vertical portion provided along an arc-shaped edge thereof, and a lower horizontal portion abutting on the upper surface of the deck. , Cross section The cut ends of the triangular heat insulating material of the edge heat insulating block are housed inside the opening of the corner member so as to pass over both ends of the vertical portion having an arc shape as viewed from the plane of the corner member. The peripheral portion of the upper surface waterproof sheet covering the upper surface of the edge insulating material block, and the upper horizontal portion of the band-shaped side waterproof sheet covering the same side surface are arranged in abutting manner with a predetermined gap therebetween,
A strip-shaped connecting sheet having elasticity is passed over the gap, and the edge of the connecting sheet is joined to the side edge of the upper waterproof sheet and the connecting side edge of the side waterproof sheet. At the same time, the connecting side ends of the strip-shaped side surface waterproof sheet are arranged in abutting manner at a predetermined gap at both connecting side ends of the corner member, and the band-shaped connecting sheet having elasticity so as to straddle this gap. The edge of the connection sheet is joined to the connection side end of the corner member and the connection side end of the strip-shaped side waterproof sheet, and is located at the circumferential position of the deck. Irrespective of this, the sharp corners of the triangular heat insulating material of each edge heat insulating block are cut off at a required portion according to the angle to form a cut end having a predetermined length. One type at the cut end of shaped insulation It is sufficient to cover the corner members, and even if the angle of the acute corner of the triangular heat insulating material of the edge heat insulating block is sequentially different depending on the circumferential position of the deck, these may include cutting of the upper surface waterproof sheet, band-shaped side surfaces. Both the cutting of the connection side end of the waterproof sheet and the cutting off of the lower horizontal portion of the acute angle corner member can be dealt with by cutting the plate material.

Therefore, just using one type of corner member,
It can cope with various angles of the sharp corners of the edge insulation block, making it very easy to manufacture corner members, and no mistakes occur in picking up materials and processing steel plates. Since only one type of corner member is used, storing and managing the corner members is extremely simple.

In addition, the corner members can be positioned quickly on site, greatly reducing the time required for on-site work.In addition, there is no need to worry about using corner members that do not match the angle. This has the effect that the operation can be performed efficiently and reliably.

[Brief description of the drawings]

FIG. 1 is an enlarged plan view of a main part of a floating roof of a floating roof tank according to a first embodiment of the present invention, FIG. 2 is a perspective view of only a corner member, and FIG. FIG. 4 is a plan view, and FIG. 2 is an enlarged sectional view taken along the line II-II in FIG. 5 to 8 are partially enlarged perspective views showing a process of sequentially performing insulation and waterproofing on a floating roof according to the present invention.
FIG. 5 is a schematic exploded perspective view showing a floating roof deck and a heat insulating material and a waterproof sheet disposed thereon, and FIG. 6 is a state in which the heat insulating material and the waterproof sheet are placed on the floating roof deck. FIG. 7 is a schematic perspective view of a shape in which connecting side edges of a waterproof sheet are connected by a strip-shaped connecting sheet on a deck of the floating roof, and FIG. 8 is a waterproof sheet on a deck of the floating roof. FIG. 7 is a schematic perspective view of a state in which a nonflammable band-shaped covering sheet is further placed on a band-shaped connecting sheet for connecting the connecting side edge portions of FIG. FIG. 9 is an enlarged sectional view taken along the line IX-IX in FIG. FIG. 10 is an enlarged sectional view taken along line XX of FIG. FIG. 11 is an enlarged plan view of a main part of a floating roof according to a second embodiment of the present invention, and FIG. 12 is an enlarged plan view of a main part of the floating roof of the third embodiment. (1) Floating roof deck of crude oil storage tank, (A)
... Welded part, (2) ... square heat insulator, (3) ... heat insulator block, (3a) ... edge heat insulator block, (2a) ...
... triangular heat insulating material, (3b) ... square intermediate heat insulating material block, (5) ... upper surface waterproof sheet, (6) ... strip-shaped side waterproof sheet, (6a) ... upper horizontal part , (6b)…
... vertical part, (6c) ... lower horizontal part, (7) ... corner member, (θ) ... corner, (7a) ... fan-shaped upper horizontal part,
(7b) ... vertical part of an arc shape as viewed from a plane, (7c) ... lower horizontal part, (8) ... cut end of triangular heat insulating material,
(9) ... gap, (10) ... floating roof, (11) ... elastic band-shaped connecting sheet.

Claims (1)

(57) [Claims] 1. A large number of heat insulating material blocks (3) are formed on a top surface of a circular floating roof deck (1) by forming a required number of rectangular heat insulating materials (2) in a predetermined number. The block (3) is laid so that the blocks are parallel to each other, and the edge heat insulating material block (3a) located near the periphery of the circular deck (1) and the intermediate heat insulating material block (3b) which is rectangular as viewed from a plane. ) Is formed, and a part or all of the constituent heat insulating material (2) of each edge heat insulating material block (3a) is sequentially cut so as to substantially coincide with a part of the circumference of the deck (1). In a floating roof type tank in which a triangular heat insulating material (2a) having an acute corner portion is formed at the tip, the triangular heat insulating material (2a) of each edge heat insulating material block (3a) is formed. A sharp corner is cut off at a required part according to the angle. Is it has brought forming the cut ends of the predetermined length (8), each edge insulation material block (3
The upper surface waterproof sheet (5) made of a synthetic resin-coated metal plate is placed on the upper surface of the block (3a) except for the peripheral edge of the upper surface of the block (3a), and the side peripheral surface of the block (3a) is covered with a synthetic resin. An upper horizontal portion (6a) made of a coated metal plate and covering the peripheral edge of the upper surface of the block (3a), a vertical portion (6b) covering the side surface of the block (3a), and a lower horizontal portion contacting the upper surface of the deck (1). (6c) is covered with a strip-shaped side waterproof sheet (6) having a substantially horizontal cross section, except for the cut end (8) of the triangular heat insulating material (2a) of the block (3a). The cut edge (8) of the triangular heat insulator (2a) of the edge heat insulator block (3a) is covered with a corner member (7) made of a synthetic resin-coated metal sheet waterproof sheet. (7) is a fan-shaped upper horizontal portion (7a) as viewed from a plane having a required angle (θ) and a circle thereof. It is composed of a vertical part (7b) provided along the shape edge and a lower horizontal part (7c) abutting on the upper surface of the deck (1). The cut end (8) of the triangular heat insulating material (2a) of the material block (3a) is located inside the opening of the corner member (7), and the vertical portion ( 7a), the peripheral part of the upper surface waterproof sheet (5) covering the upper surface of the extraordinary heat insulating material block (3a) and the strip-shaped side waterproof sheet (6) covering the same side. A predetermined gap (9) between the upper horizontal part (6a) and each other
The stretchable band-shaped connecting sheet (11) is passed over the gap (9) so that the edge of the connecting sheet (11) is attached to the upper surface waterproof sheet (5). )
And the connecting side edge of the side waterproof sheet (6), and connecting the strip-shaped side waterproof sheet (6) to both connecting side ends of the corner member (7). The side end portions are arranged in a butt shape with a predetermined gap (9) therebetween, and an elastic band-shaped connecting sheet (11) is passed over the gap (9), and the connecting sheet (11) is Insulation and waterproofing of a floating roof in a floating roof tank, wherein an edge is joined to a connecting side end of a corner member (7) and a connecting side end of a strip-shaped side waterproof sheet (6). apparatus.