JPH0311507Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a support structure for piping having a thermal sleeve, which is used when connecting the piping to a container capable of storing fluid, for example.

[Prior art] As shown in Fig. 1, a conventional pipe support structure consists of welding a thin sleeve d fixed to the outer periphery of pipe b to a hole c for connecting pipe b in a container a capable of storing fluid. By doing so, a temperature gradient is created in the sleeve d to alleviate thermal stress when a fluid having a temperature difference from the container a flows through the pipe b.

However, when high-temperature fluid suddenly flows into the container a, not only does the temperature gradient in the sleeve d become steep, but also the area where the wall e of the container a intersects with the pipe b is exposed to radiant heat from the pipe b. As the temperature rises rapidly, thermal stress increases temporarily, making it easy for cracks to occur in or near the thin sleeve d or in the vicinity of the hole c in the wall e, which poses a safety problem. was.

[Purpose of the invention] In view of the above-mentioned conventional situation, the present invention aims to provide a support structure for piping having a thermal sleeve that can stably support the piping even when high-temperature fluid rapidly flows in.

[Structure of the invention] The invention fixes a pipe through which a high-temperature or low-temperature fluid flows to a wall of a fluid storage container or the like through which the pipe passes, and has a large diameter part, and an annular seal is formed in the large diameter part. By fitting a thermal sleeve that has an insulating boundary with an air layer, the thermal shock caused by the temperature difference between the fluid flowing inside the pipe and the wall is alleviated by the sealed air layer, and the pipe can be stably supported. This relates to a support structure for piping that has.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 2 shows an embodiment of the present invention, in which the outer circumference of a pipe 2 having approximately the same inner diameter as the inner diameter of the pipe 1 and sufficiently longer than the thickness of the wall 11 of the container 8 is larger than the outer diameter of the pipe 2. A cylinder 3 having an inner diameter and shorter than the length of the tube 2 is fitted, and both ends 4 and 5 of the cylinder 3 are fixed to the outer periphery of the tube 2 so that the cylinder 3 and the tube 2 are concentric. A thermal sleeve 7 having a sealed air layer 6 between it and the cylinder 3 is formed.

a tapered large diameter portion 9 that can accommodate the thermal sleeve 7 by cutting the pipe 1 to be connected to the container 8 and bringing both cut portions into close contact with the outer periphery of the thermal sleeve 7;
10 are provided respectively, and both ends of the thermal sleeve 7 inserted into the hole 12 provided in the wall 11 of the container 8 are accommodated and supported at the large diameter portions 9 and 10 without welding, respectively. , 10 into the hole 1
It is welded to the edge of 2.

Further, the large diameter portions 9 and 10 serve as pressure boundaries.

Here, the shape of the thermal sleeve 7 is such that one end is tapered so as to be in close contact with the tapered large diameter portions 9 and 10, and the other end is simply welded at a right angle. Instead, both ends may be tapered or welded at right angles. In either case, a sealed air layer 6 is formed over the area where the pipe 2 and the wall 11 of the container 8 intersect.

With the above configuration, when a fluid whose temperature is higher than that of the container 8 suddenly flows through the piping 1 and enters the container 8, the high-temperature fluid is thermally heated at the connection between the piping 1 and the wall 11 of the container 8. The flow flows through the tube 2 of the sleeve 7, and an adiabatic boundary is formed in the large diameter portions 9, 10 of the tube 2 by the air layer 6 sealed by the thermal sleeve 7. Transfer of heat from the high temperature fluid to the wall 11 of the container 8 can be reduced.

At this time, the thermal sleeve 7 is only fitted and housed in the upper and lower tapered large diameter portions 9 and 10 of the pipe 1 and the hole 12 of the container 8, but both ends of the pipe 2 are in close contact with the pipe 1, respectively. Therefore, the high-temperature fluid flows through the tube 2 without going around between the thermal sleeve 7 and the tapered large-diameter portions 9 and 10, so that the heat of the high-temperature fluid is not directly transmitted to the wall 11 of the container 8, and the air The heat insulating effect of the layer 6 is sufficiently exhibited, and since the layer 6 is simply fitted and housed in the hole 12 of the container 8 as described above, the effect of thermal stress on the wall 11 of the container 8 is reduced, preventing cracks and the like. Occurrence is prevented,
Therefore, the strength of the container 8 is maintained and safety is improved.

The support structure for piping with a thermal sleeve of the present invention is not limited to the above-mentioned embodiments, and may also be used for piping for low-temperature liquids without departing from the gist of the present invention. Of course, various changes can be made.

[Effects of the invention] As described above, according to the piping support structure having a thermal sleeve of the present invention, an annular seal formed by the thermal sleeve is provided in the large diameter portion that is the connection part of the piping to a container capable of holding a fluid. Since an air layer is formed and serves as an adiabatic boundary, even if a fluid with a temperature higher than the temperature of the container suddenly flows through the pipe, heat transfer is blocked by the air layer with low thermal conductivity. Because it is simply fitted and stored, it can alleviate temporary thermal stress that occurs at the connection, and it can stably support piping, significantly improving safety compared to conventional methods. It works and you get copper.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional piping support structure, and FIG. 2 is an explanatory diagram of a piping support structure having a thermal sleeve according to the present invention. 1 is piping, 2 is pipe, 3 is cylinder, 6 is air layer, 7
Reference numeral 8 indicates a thermal sleeve, 8 indicates a container, and 9 and 10 indicate a tapered large diameter portion.

Claims (1)

[Scope of utility model registration request] A pipe through which fluid flows is attached to a wall through which the pipe passes,
1. A support structure for piping having a thermal sleeve, characterized in that the thermal sleeve is fixed with a large diameter part and has a heat insulating boundary formed by an annular sealed air layer fitted into the large diameter part.