JP7379412B2 - Sheet metal exterior materials and construction methods for sheet metal exterior materials - Google Patents

Description

The present invention is capable of being attached along the outer circumferential surface of a heat insulating material that covers the outer circumference of an elbow portion of a fluid piping, is partitioned by a parting line along the curved radius direction of the elbow portion, and is formed by bending a sheet metal into a cylindrical shape. The divided end edges of the plurality of divided exterior members are connected to each other to form a shrimp pipe shape, and both ends in the circumferential direction of the piping can be connected at the bent inner side of the plurality of divided exterior members connected in the shrimp pipe shape. This invention relates to a sheet metal exterior material and a method for constructing the sheet metal exterior material.

Conventionally, as shown in FIGS. 5(a) to 5(c), the sheet metal exterior material has a general curve of the bent inner part 5 and the bent outer part 6 of the plurality of divided exterior members 4 connected in the shape of a shrimp tube. The curved line is formed in a substantially concentric shape, and the bent inner side portion 5 of the plurality of divided exterior members 4 connected in the shape of a shrimp pipe is connected to each end portion in the circumferential direction of the piping with a screw 10 (FIG. 5(c)). ) was used to connect them (this is a well-known technique and I cannot find an appropriate publication).

However, in the construction method in which each of the circumferential ends of the plurality of divided exterior members 4 connected in the shape of a shrimp pipe is connected to each other in the circumferential direction of the piping at the bent inner side 5 using screws 10, the screws 10 are used to connect the waterproof material of the base, There is a risk of puncturing or damaging the moisture-proofing material, heat insulating material, etc., and until the screws 10 are installed, the bent inner part 5 of the split exterior member 4 is attached to both ends of the piping in the circumferential direction. The problem was that the pipes had to be piled up and tightened with temporary lashing material to keep them stable, which required a lot of work at the piping site and worsened workability.

Therefore, an object of the present invention is to solve the above-mentioned problems and improve the workability of sheet metal exterior materials at piping sites.

A first feature of the sheet metal exterior material of the present invention is that it can be attached along the outer circumferential surface of a heat insulating material that covers the outer circumference of an elbow portion of a fluid pipe, and is partitioned by a dividing line along the radial direction of the curve of the elbow portion. and forming a shrimp tube shape by connecting the divided end edges of a plurality of divided exterior members made by bending sheet metal into a cylindrical shape, and forming a bent inner part of the plurality of divided exterior members connected in a shrimp tube shape. In the plurality of divided exterior members connected in a shrimp pipe shape, which are sheet metal exterior members configured so that both ends in the circumferential direction of the pipe can be connected, the distance between the bent inner part and the bent outer part is The divided exterior member at the bending intermediate portion is formed to be larger than the divided exterior member at the bending start end and the bending end portion, and the divided exterior member is formed so that the divided exterior member at the bending inner portion is larger at each end in the pipe circumferential direction. The structure is such that gobies are provided and these gobies can be engaged and connected to each other.

According to the first feature of the present invention, in the plurality of divided exterior members connected in a shrimp tube shape, the distance between the bent inner part and the bent outer part is determined by By forming the split exterior member in the middle part of the bend to be larger than the split exterior member, the radius of curvature of the general arc of the inner part of the bend becomes larger. Compared to the original, it is now possible to easily separate and approach both ends of the pipe in the circumferential direction on the bent inner side of the entire plurality of split exterior members that connect the split end edges, and the outer periphery of the elbow part can be moved easily. Not only is it easier to wrap the insulation material covering the outer sheathing material from the outside, but it also makes it easier to engage and connect the joints provided at both circumferential ends of the pipe on the inside curved part of the split exterior member. construction becomes easier.

A second feature of the present invention is that the connection portions between the divided end edges of the plurality of divided exterior members are formed into a hooked connection structure so that the elbow portion can be covered with a heat insulating material.

According to the second characteristic configuration of the present invention, in addition to being able to achieve the above-mentioned effects according to the first characteristic configuration of the present invention, the connection and assembly of a plurality of divided exterior members can also be performed using elbows. Compared to a technique in which the parts are formed into a shrimp tube shape and then connected by welding, forming the parts into a hooked connection structure makes manufacturing easier and improves the efficiency of manufacturing work.

The third method of constructing a sheet metal exterior material of the present invention is to separate both ends of the bent inner side of the split exterior member in the circumferential direction of the pipe from each other, and then install the insulation material from the outside of the heat insulating material covering the outer circumference of the elbow portion of the fluid pipe. The above-mentioned sheet metal exterior material is covered, and the above-mentioned gobs are brought close to each other so as to be engaged and connected to each other.

According to the third characteristic configuration of the present invention, compared to a case where the radius of curvature of the approximate circular arc of the bent inner side is small, the bent inner side of the entire plurality of divided exterior members connecting the divided end edges is It is easy to separate and approach each end of the elbow, and it is easy to wrap it around the heat insulating material that covers the outer periphery of the elbow part from the outside. A moisture-proof layer located between the insulation material and the exterior material is used to insulate (cold-retain) low-temperature piping by engaging and connecting the joints provided in each section, eliminating the need for screws as in the past. A sheet metal sheathing material can be attached without penetrating the piping, making it easy to protect the piping with the sheet metal sheathing material.

FIG. 2 is an overall perspective view of a state in which an exterior material is attached to a heat insulating material that covers an elbow portion. FIG. 1 is an overall perspective view of the exterior material of the present invention. Six views of the exterior material of the present invention, (a) is a plan view, (b) is a left side view, (c) is a front view, (d) is a right side view, (e) is a bottom view, (f ) is a rear view. These are cross-sectional views of the goby, (a) showing the goby at the bent inner side, and (b) showing the goby at the split end edge. A conventional exterior material is shown, with (a) being a plan view, (b) being a left side view, and (c) being a front view. FIG. 3 is a design conceptual diagram as viewed from the right side.

Embodiments of the present invention will be described below based on the drawings. In addition, in the drawings, parts indicated by the same reference numerals as in the conventional example indicate the same or corresponding parts.

As shown in FIGS. 1 to 3, for fluid piping 1 through which high-temperature fluid or low-temperature fluid flows, the outer periphery of the fluid piping 1 is covered with a heat insulating material 2, so that the thermal energy of the circulating fluid leaks to the outside. A piping insulation structure is designed to prevent this.
The heat insulating material 2 should be made of an inorganic material such as a calcium silicate molded material or an inorganic fiber cotton material such as rock wool or glass wool when a high temperature fluid flows through the pipe. When flowing inside, organic foamed resin materials such as foamed polyurethane, foamed polystyrene, and foamed polyethylene are often used.
In the above pipe insulation structure, in order to cover the outer peripheral part of the heat insulating material 2 and protect the heat insulating material 2 from wind, rain, external force, etc., a cylindrical exterior material 3 in the straight pipe part 1A and a substantially bent part in the elbow part 1B are used. A tubular exterior material 3 is each made of sheet metal and bent and attached to the outside of the heat insulating material 2.
In particular, in the elbow part 1B, it can be attached along the outer peripheral surface of the heat insulating material 2 that covers the outer peripheral part of the elbow part 1B, and it is divided by a dividing line along the curved radius direction of the elbow part 1B, and the sheet metal is made into a cylindrical shape. The divided end edges 4A of the plurality of bent divided exterior members 4 are connected to each other to form a shrimp pipe shape, and both ends in the piping circumferential direction are formed at the bent inner parts 5 of the plurality of divided exterior members 4 connected in the shrimp pipe shape. Each of them is provided with a sheet metal exterior member that can be connected to each other.

As shown in the six-sided views of FIGS. 3(a) to 3(f), in the plurality of divided exterior members 4, the divided end edges 4A along the dividing line are connected to each other by hooking (FIG. 4(b)). The distance between the bent inner part 5 and the bent outer part 6 (in FIG. A and B), the distance between the split exterior member 4 at the bending middle part (B in Figure 6) is larger than the distance between the split exterior member 4 at the bending start end and the bending end (A in Figure 6). A joint 7 (FIG. 4(a)) is provided at each end of the bent inner part 5 of the divided exterior member 4 in the circumferential direction of the pipe, and the joints 7 are configured to be able to engage and connect with each other. be.

The diameter of the heat insulating material 2 is 300 to 1000 mm, and the divided exterior member 4, which is made by bending the sheet metal into a cylindrical shape, is a painted hot-dip galvanized steel plate (JIS G 3312) with a thickness of 0.27 to 0.40 mm. It is made of metal plate.

In order to manufacture the plurality of split exterior members 4 into a shrimp pipe shape, first, as shown in FIG. , a bent outer part 6 is formed on the outer curve of radius R1 and a roughly curved line that can be connected to the cylindrical sheathing material 3 for the straight pipe part 1A of the piping, and the bent inner part 5 of the sheathing material 3 has a first curvature. A second center of curvature P2, which is different from the center P1 and is located further away from the inner side of the curve of the elbow portion 1B, is formed on a circular arc with a radius R2, and between the inner curved portion 5 and the outer curved portion 6. The distance (A or B in FIG. 6) is formed so that the distance B of the divided exterior member 4 at the middle part of the bend is larger than the distance A of the divided exterior member 4 at the beginning and end of the bend. be.

Therefore, the side view shape of the bent inner portion 5 has a smaller curvature so as to become closer to a straight line, and the joints 7 provided at each end of the bent inner portion 5 in the pipe circumferential direction in the divided exterior member 4 are engaged with each other. Connection becomes easy, construction of the exterior material 3 becomes easier, and both ends in the circumferential direction of the pipe can be moved apart or close to each other at the bent inner side 5 of the plurality of divided exterior members 4 in which the divided end edges 4A are connected to each other. The operation can be performed easily, and the elbow part 1B can be easily attached by being wrapped around the heat insulating material 2 covering the outer circumferential part of the elbow part 1B from the outside.

Therefore, when constructing the sheet metal exterior material, the divided end edges 4A of the plurality of divided exterior members 4 are connected in advance by hooking, and both ends of the bent inner side portion 5 of the divided exterior members 4 in the pipe circumferential direction are A sheet metal exterior material is applied from the outside of the heat insulating material 2 that covers the outer periphery of the elbow portion 1B of the fluid piping while being separated from each other, and the joints 7 are brought close to each other and are engaged and connected to each other.
[Another embodiment]
Other embodiments will be described below.
In addition, in the following other embodiments, the same reference numerals are given to the same members as in the above embodiment.
<1> The divided exterior member 4 is made of a fused 55% aluminum-zinc alloy plated steel plate (JIS G3321) with a thickness of 0.27 to 0.40 mm, or a painted fused 55% aluminum alloy plated steel plate, in addition to a painted hot-dip galvanized steel plate. It may be made of a zinc alloy plated steel plate (JIS G3322) or a metal plate with a thickness of 0.27 to 0.40 mm. Alternatively, a cold rolled stainless steel plate (JIS G4305), an aluminum plate, or an aluminum alloy plate (JIS H4000) may be used.

Incidentally, as mentioned above, although the reference numerals are written for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by the markings. Moreover, it goes without saying that the invention can be implemented in various ways without departing from the gist of the invention.

1 Fluid piping 1B Elbow part 2 Heat insulating material 4 Divided exterior member 4A Divided edge part 5 Bent inner part 6 Bent outer part

Claims (3)

It can be attached along the outer circumferential surface of the insulation material that covers the outer circumference of the elbow part of the fluid piping.
forming a shrimp tube shape by connecting the divided end edges of a plurality of divided exterior members, each of which is divided by a dividing line along the curved radial direction of the elbow portion and which is formed by bending a sheet metal into a cylindrical shape;
A sheet metal exterior member configured to be able to connect each of both circumferential ends of the pipe at the bent inner side of the plurality of split exterior members connected in a shrimp pipe shape,
In the plurality of divided exterior members connected in a shrimp tube shape,
The distance between the inner side of the bend and the outer side of the bend is formed so that the split outer member at the middle part of the bend is larger than the split outer member at the start and end of the bend,
providing a seam at each end in the circumferential direction of the pipe on the bent inner side of the divided exterior member,
A sheet metal exterior material configured to enable engagement and connection of the above-mentioned halves. 2. The sheet metal exterior material according to claim 1, wherein the connecting portions between the divided end edges of the plurality of divided exterior members are formed in a hooked connection structure so that the elbow portion can be covered with a heat insulating material. A method for constructing a sheet metal exterior material according to claim 1 or 2, comprising:
Covering the sheet metal exterior material from the outside of the heat insulating material that covers the outer circumference of the elbow portion of the fluid piping while separating both ends in the piping circumferential direction of the bent inner side of the divided exterior member,
A method of constructing a sheet metal exterior material in which the above-mentioned gobs are brought close together and engaged and connected to each other.

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