JP2000257754A - Pipeline structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb a difference of displacement of a pipeline member to be generated between fixed positions by earthquake without using a special displacement absorbing joint by bending the pipeline member into a circle between both the fixed positions. SOLUTION: A coolant pipeline 4 is bent into a circle on a slide plate 8a positioned between a fixed position A and a fixed position C. A circular shape holding member 10 such as a hard vinyl chloride hose is fitted on an upper half part of a circular part 4A so as to prevent the bend and so as to give the restoring force. With this pipeline structure, even in the case where an earthquake is generated, a difference of vibration is generated between the fixed position A and the fixed position C, and a difference of displacement of the coolant pipeline 4 is generated between the fixed position A and the fixed position C. Never the leso, the difference of displacement between them can be absorbed by enlarging or shrinking the diameter of the circular part 4A. Breakdown of the coolant pipeline 4 is thereby prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a displacement member generated between a fixed portion between a facility and the outside of the piping member due to an earthquake in a piping member provided between a facility having a vibration isolation structure and the outside of the facility. The present invention relates to a piping structure capable of absorbing the pressure.

[0002]

2. Description of the Related Art As shown in FIG.
A refrigerant pipe 4 is disposed between a building 2 having a vibration isolation structure in which is installed and an outdoor unit 3 installed outside the building 2,
If this refrigerant pipe 4 is fixed at fixing points A on the building 2 and fixing points B located outside the building 2 by fixing members 5 and 6, respectively, if an earthquake occurs, these fixing points A difference in swing occurs between A and the fixing point B, and therefore, due to a difference in displacement of the refrigerant pipe 4 between the fixing point A and the fixing point B, the refrigerant pipe 4 is broken between them, or the fixing member 5, 6 and other parts may be damaged.

Conventionally, a displacement absorbing joint 7 such as a corrugated metal pipe joint or a bellows type metal pipe joint is interposed in the refrigerant pipe 4 between the point A and the point B.

[0004]

However, such a displacement absorbing joint 7 is expensive due to its complicated structure, and requires a special connection between the displacement absorbing joint 7 and a normal piping member. Therefore, there is a problem that construction costs increase.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can absorb a displacement difference of a pipe member generated between fixed parts due to an earthquake with a simple configuration and at low cost without using a special displacement absorbing joint. The purpose is to provide a piping structure.

[0006]

In order to achieve the above object, a piping structure according to claim 1 is provided with a piping member provided between a facility having a vibration isolation structure and the outside of the facility. A piping structure in which members are fixed to the facility and the outside, respectively, wherein the piping member is bent in a circular shape between the two fixing points.

According to the first aspect of the present invention, in the event of an earthquake, there is a difference in shaking between a fixed place in the vibration-isolated structure and a fixed place outside the facility. A displacement difference occurs in the refrigerant pipe at the location. However, when the diameter of the circular portion is increased or decreased, the displacement difference between the two is absorbed, so that breakage or the like of the pipe member is prevented.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the piping structure of the present invention will be described below with reference to FIG. In FIG. 1, the same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof will be simplified.

In the present embodiment, a vibration-isolated structure building (facility-isolated facility) 2 in which a vibration-isolation device 1 is installed and an outdoor unit 3 installed outside the building 2 are provided. A refrigerant pipe (pipe member) 4 is provided. This refrigerant pipe 4
It is fixed to a fixing point A on the building 2 by the fixing member 5. The refrigerant pipe 4 is mounted on a slide plate 8A of a slide table 8 installed outside the building 2 and is fixed by a fixing member 9 attached to a side of the slide table 8 on the outdoor unit 3 side. It is fixed to a fixing point C.

On the slide plate 8A located between the fixing points A and C, the refrigerant pipe 4 is bent in a circular shape. In the upper half of the circular portion 4A, a circular holding member 10 such as a hard PVC hose is inserted outside in order to prevent breakage at the circular top and to provide a restoring force.

When a plurality of refrigerant pipes 4 are arranged in parallel with each other, each circular portion 4A is placed on a slide plate 8A, and each refrigerant pipe 4 is fixed by a fixing member 9, respectively. As shown in FIG. 1, a rod-shaped member 11 is attached to each refrigerant pipe 4 below the top of each circular portion 4A of each refrigerant pipe 4.
When the refrigerant pipes 4 are fixed to the rod-shaped member 11 by the fixtures 12 to connect the refrigerant pipes 4, the circular portions 4A are inclined in the lateral direction. Can be prevented.

In the piping structure configured as described above, if an earthquake occurs, the fixed location A and the fixed location C
And a difference in displacement occurs between the refrigerant pipes 4 at the fixed points A and B. However, as the diameter of the circular portion 4A increases and decreases, the displacement difference between them is absorbed. This prevents breakage of the refrigerant pipe 4 and the like.

Here, the circular portion 4A bent into a circular shape is used.
Is set, for example, as follows. That is,
The displacement difference between the refrigerant pipes 4 at the fixing points A and C is 400 mm, and the minimum bending diameter of the refrigerant pipe 4 is 5 mm.
In the case of 60 mm, in order to absorb the displacement difference of 400 mm, the initial diameter of the circular portion 4A is about 700 mm.
(688 mm). This is (560 mm diameter
Length of the circumference) + (displacement difference 400 mm) is 2160 m
m, which is divided by the pi of 3.14 to 688 mm
This is because

This piping structure has an advantage that it has a simple configuration in which it is bent in a circular shape and that it is inexpensive because no special work is required for installation.

[0015]

As described above, according to the piping structure of the first aspect, the piping member is formed in a circular shape between the fixed point in the facility of the vibration isolation structure and the fixed point outside the facility. Because of the bent configuration, the displacement difference between these fixed portions can be absorbed by enlarging and reducing the diameter of the circular portion. Therefore, there is an effect that it is possible to prevent breakage or the like of the pipe member with a simple configuration and at low cost without using a special displacement absorbing joint.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of a piping structure of the present invention.

FIG. 2 is a configuration diagram showing a conventional piping structure.

[Explanation of symbols]

 2 Building (vibration isolation structure facility) 4 Refrigerant piping (piping member) A, C fixing point

Claims (1)

[Claims] 1. A piping structure in which a piping member is provided over a facility having a vibration isolation structure and outside the facility, and the piping member is fixed to the facility and the outside, respectively. The piping structure, wherein the member is bent in a circular shape between the fixing portions.