JP2001056071A - Piping support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow piping to freely move when the piping is largely displaced due to an earth movement caused by liquification. SOLUTION: A support block 5 with its tip part connected to piping 1 is slidably inserted into a pipe-like support body. A seal material 8 is placed between an outer surface of the support block 5 and the inner surface of a tip part of the support body 7 for sealing. A base end side of the support body 7 is fixed to a support reception stand 11 to connect with a support frame 12 for rotation. A rupture disk 9 is installed on the base end part of the support body 7. Water is sealed in the support body 7 between the rupture disk 9 and a base end surface of the support block 5. When the piping 1 is about to be displaced largely due to an earth movement caused by liquification, if a large force is applied to the support block 5 and the support body 7, which try to restrain the movement, the hydraulic pressure inside the support body 7 increases to break the rupture disk 9, thereby allowing a free travel of the piping 1 through the support block 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe supporting apparatus which allows free movement of a pipe when the ground greatly fluctuates due to a liquefaction phenomenon at the time of an earthquake and the pipe is largely displaced.

[0002]

2. Description of the Related Art FIG.
As shown in (1), a support block 2 fixed to the pipe 1 or engaged with a projection provided on the pipe 1 so as to move integrally with the pipe is slidably mounted on a support base 3 via a sliding plate 4. When the pipe 1 heat-transfers due to the temperature of the fluid flowing in the pipe 1, the support block 2 moves in the same manner as the pipe 1 and slides on the support base 3 to restrict the heat transfer of the pipe 1. There is a configuration in which the pipe 1 is supported while following it without performing the following. As an anti-seismic measure, the pipe 1 is supported at a dense pitch so as to have sufficient strength against earthquake acceleration. It is.

[0003]

However, when an earthquake occurs, a phenomenon in which the ground contains a large amount of water and becomes muddy due to vibration, a so-called liquefaction phenomenon, and the ground fluctuates greatly, If the pipe 1 is supported at a fine pitch by the pipe supporting apparatus as shown in FIG. 2, the pipe 1 cannot be freely moved, and the support block 2 is not used in the conventional pipe supporting apparatus.
There is no consideration to break the pipe and lose the support function of the pipe 1, and there is a possibility that the movement of the pipe 1 may be hindered when the ground changes greatly, and various large displacements of the ground due to liquefaction phenomenon have been considered so far. In fact, no support device has been proposed which is designed to ensure that the pipe support function is lost for a large force.

[0004] Therefore, the present invention is intended to provide a method for reliably destroying a pipe when the pressure exceeds a certain level and losing the pipe supporting function when the ground greatly fluctuates due to liquefaction such as an earthquake or the like and a large force acts on the pipe. It is an object of the present invention to provide a pipe support device that can perform the above-described steps.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a liquid-tight slidable base end of a support block on the distal end of a cylindrical support having a required length. At the same time, the rupture disk is attached to the base end side of the support, and the tip end of the support block is connected to the pipe, and the base end side of the support is supported on the fixed side,
A fluid such as water is sealed in the support to support the piping.

[0006] When the piping is going to be largely displaced due to ground deformation due to liquefaction during an earthquake, the support block and the support receive a large force in an attempt to suppress the movement of the piping. This large force causes the pressure in the support to rise and break the rupture disc. If the rupture disc is torn, the pressure in the support will drop and the piping will be free to move through the support block.

When the connecting portion between the pipe and the support block is swingable and the connecting portion between the support and the fixed side is rotatable, the pipe is supported vertically and horizontally. In addition, the rupture disks of both support devices are broken, so that the movement of the pipe in any direction becomes free.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 (a) and 1 (b) show an embodiment of the present invention, in which the base end side of a support block 5 whose tip is swingably connected to the outside of a pipe 1 by a universal joint 6 is shown. The support block 5 is slidably inserted into a cylindrical support 7 having an inner diameter larger than the outer diameter of the support block 5 on the same axis. A seal member 8 for sealing between the outer peripheral surface and the outer peripheral surface is provided so that the support block 5 can slide within the support body 7 to perform the expansion and contraction operation, and a seal between the inner support surface and the outer surface of the support block. Can be performed sufficiently. In addition, a rupture is provided at the base end of the cylindrical support 7 so that when the pressure of the water to be sealed in the support 7 increases, the water breaks down and the water flows out of the support 7. Attach the disk 9,
Water is sealed in the support 7 between the rupture disk 9 and the support block 5 so that a slight displacement of the support block 5 in the axial direction is absorbed in the support 7 and a large displacement of the support block 5 is achieved. When the water pressure in the support 7 exceeds a certain pressure, the rupture disc 9 is surely broken, and the water 10 in the rupture disk 9 flows out so that the movement of the pipe 1 through the support block 5 becomes free.

Further, a base plate 1 is provided on the base end side of the support 7.
A support pedestal 11 having a plurality of arms 11b erected on the upper surface of the support 1a is fixed by fixing the distal end side of each arm 11a, and the rupture disk 9 mounting portion of the support 7 and the base plate 11a are fixed. And a required gap is formed between the support base 11 and the pipe 1 on the support base 12.
The support block 5, the support 7, and the support pedestal 11 are integrally rotatable about the pin 13 so that the support block 5, the support 7, and the support pedestal 11 can be rotated so as to be rotatable in a direction perpendicular to the axial direction of the shaft. .

[0011] The pipe support device of the present invention having the above-mentioned structure is as follows.
As shown in FIG. 1A, the pipe 1 is disposed in a vertical direction and a horizontal direction, and is used while supporting the bottom surface and the side surface of the pipe 1.

With respect to the heat transfer of the pipe 1 in the normal state, or the roll in the event of an earthquake, the swing by the universal joint 6 between the pipe 1 and the support block 5 or the support pedestal 11 and the support gantry 12 Can rotate smoothly around the pin 13 between the two, and has sufficient strength against heat transfer of the pipe 1 and seismic acceleration during an earthquake.

When the liquefaction phenomenon caused by the earthquake causes the ground to undergo various large displacements, the support 1, the support 7, the support block 5 and the like constituting the pipe support device of the present invention and the pipe 1 are connected. A large relative displacement occurs between the two. However, at this time, if the pipe 1 attempts to fluctuate greatly, the support block 5 and the support 7 receive a large force in an attempt to hinder their movement. When the support 7 and the support block 5 are shortened, the pressure of the water 10 in the support 7 increases, and when the water pressure exceeds a certain pressure, the rupture disc 9 is broken by the water pressure and the inside of the support 7 is broken. Of water 10 flows out from the base end side. Thereby, the axial movement of the support block 5 becomes free, the support function of the pipe 1 is lost, and the movement of the pipe 1 becomes free.

For example, when the pipe 1 is to be largely displaced to a position shown by a two-dot chain line in FIG.
When the support 7 and the support block 5 of each pipe support device in the vertical direction and the horizontal direction are both shortened, when the water pressure in each support 7 becomes equal to or higher than the breaking pressure of the set rupture disk 9. Since the rupture disk 9 is broken and the water 10 inside leaks out, the movement of each support block 5 with respect to each support 7 is free, and the universal joint 6 and the support receiving part of the connection portion between each support block 5 and the pipe 1 are provided. Since the support 7 and the support block 5 can be rotated by the pin 13 at the connection portion between the table 11 and the support base 12,
The pipe 1 can freely move from the solid line position to the position indicated by the two-dot chain line.

In the above description, the expansion / contraction stroke of the support block 5 and the support 7 constituting the pipe support device of the present invention and the force for breaking the rupture disk 9 are determined by the amount of ground displacement caused by the assumed liquefaction phenomenon. It can be set individually depending on the diameter of the pipe 1, the installation conditions of the pipe 1, and the like.

The present invention is not limited to the above embodiment. For example, a seal member 8 is interposed between the outer peripheral surface on the base end side of the support block 5 and the inner peripheral surface on the distal end of the support 7. In this case, the piston is attached to the base end of the support block 5 and stored in the cylindrical support 7, and water is sealed in the support 7. The structure of the connecting portion between the support block 5 and the pipe 1 may be a universal joint 6.
Is shown, but another connection method may be adopted as long as it can follow the movement of the pipe 1, a material to be sealed in the support 7 may be a fluid other than water, and the like. It goes without saying that various changes can be made without departing from the spirit of the present invention.

[0017]

As described above, according to the piping support apparatus of the present invention, the base end of the support block is inserted into the distal end of the cylindrical support in a liquid-tight manner, and the base end of the support is inserted. A rupture disk is attached to the side, and the distal end of the support block is connected to and supported by piping, and the base end of the support is supported on the fixed side, and water is sealed in the support. It has sufficient strength for earthquake resistance, and when the liquefaction phenomenon occurs due to the earthquake and the ground fluctuation is large, if the piping is going to be greatly displaced by the ground fluctuation, it is supported by the displacement of the support block. When the water pressure inside the body rises above the pressure at which the rupture disc is broken, the rupture disc is broken, water in the support leaks, and the support block can move freely, so that the pipe supporting machine can be reliably moved. And the piping can be freely moved to protect the piping, and the support block is swingably connected to the piping and the base end of the support is rotatable to the fixed side. By connecting to the pipes, the pipes can be displaced more freely, and furthermore, by supporting one pipe from the vertical direction and the horizontal direction, the rupture discs of the supports of both support devices can be formed. Excellent effects such as being able to be displaced in an arbitrary direction without breaking and restraining the pipe can be achieved.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a pipe support device of the present invention, in which (a) is a view seen from the axial direction of the pipe, and (b) is an enlarged view of a support block and a support.

FIG. 2 is a schematic view showing an example of a conventional pipe support device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Piping 5 Support block 6 Universal joint 7 Support body 8 Seal material 9 Rupture disk 10 Water (fluid) 11 Support stand

Claims (3)

[Claims] 1. A support having a required length, which is formed in a cylindrical shape, and a base end of a support block is slidably inserted in a liquid-tight manner into a front end of the support and a rupture disk is attached to the base end of the support. And, the distal end of the support block is connected to a pipe, and further, the base end side of the support is supported on a fixed side,
A pipe supporting device, wherein a fluid such as water is sealed in the support to support the pipe. 2. The piping support device according to claim 1, wherein the tip of the support block is swingably connected to the piping. 3. The pipe support device according to claim 1, wherein the base end side of the support is connected to a fixed side so as to be rotatable in a direction perpendicular to the axial direction of the pipe.