KR20230039245A - Seismic support for gas pipe - Google Patents

Abstract

The present invention relates to an earthquake-resistant support for a gas pipe and, more specifically, to an earthquake-resistant support for a gas pipe that is constructed so that a gas pipe located on the wall of a facility (building, etc.) is safely supported on a wall and reduces vibration transmitted to the gas pipe when an earthquake occurs. According to an embodiment of the present invention, provided is an earthquake-resistant support for a gas pipe, comprising: a gas pipe supported on the wall of a facility; a fixed frame provided between the gas pipe and the facility; and a buffer member provided between the fixed frame and the gas pipe to cushion the vibration of the fixed frame and transmit the vibration to the gas pipe. The fixed frame comprises: a lower fixed frame bolted and fixed to the wall of the facility to support the gas pipe; and an upper fixed frame bolted and fixed to the upper part of the lower fixed frame. By having an inner diameter larger than the predetermined circle constituting the outer diameter of the gas pipe by a predetermined length, the inner peripheral surface of the fixed frame is coupled to have a certain distance from the outer peripheral surface of the gas pipe. A plurality of the fixed frames are connected to the gas pipe at predetermined intervals. Accordingly, earthquake resistance can be added to a gas pipe in an existing old facility.

Description

Seismic support for gas pipe {Seismic support for gas pipe}

The present invention relates to an earthquake-resistant support for gas piping, and more particularly, is configured so that gas piping located on the wall of a facility (building, etc.) is safely supported on the wall, and in the event of an earthquake, vibration transmitted to the gas piping is reduced It relates to a seismic support for gas piping.

In the construction of buildings, mechanical equipment and firefighting equipment, various types of pipe supports are used to install pipes spaced apart from the ceiling at a certain distance. Conventional pipe support is a structure that cannot resist the lateral force in the horizontal direction and cannot prevent the pipe from being shaken by an earthquake, resulting in pipe deformation and damage. As a result, a lot of cost is incurred due to pipe replacement, relocation, and maintenance. In addition, damage to fire extinguishing system piping can lead to human casualties due to fire that may occur during an earthquake.

In particular, in the case of city gas piping, earthquake-resistant design is very important because leaks caused by earthquakes are highly likely to lead to large-scale accidents such as explosion accidents.

Seismic design for city gas pipelines has been compulsory since 2004, and it is confirmed that many domestic gas pipelines, including facilities built before 2004, are not seismically designed. Specifically, it is understood that less than 50% of the total gas piping is seismically designed.

On the other hand, it is difficult to fix the pipe at an appropriate pressure, such as damage to the pipe due to fixing the pipe with excessive pressure.

Due to these problems, a device for adding an earthquake-resistant function to the gas pipe is required.

Korean Patent Registration No. 10-2199647 discloses an "seismic clamp system for piping", and the patent document proposes a structure for connecting a clamp system with an earthquake-resistant function to a pipe, but the structure and installation method are complicated and the production method is complicated. / Due to the excessive installation cost, there was a limit that was not suitable for application to gas piping of old facilities built before 2004.

The problem to be solved by the present invention is to provide a seismic support for gas piping in a form that can be easily installed after removing the existing fixing device that is specialized for gas piping in order to improve the limitations of the conventional gas piping connection structure as described above. will be.

The present invention, in order to improve the limitations of the conventional gas pipe connection structure as described above, the gas pipe supported on the wall of the facility; a fixed frame provided between the gas pipe and the facility; and a buffer member provided between the fixing frame and the gas pipe to absorb vibration of the fixing frame and transmit the vibration to the gas pipe, wherein the fixing frame is bolted and fixed to the wall of the facility to support the gas pipe. lower fixed frame; and an upper fixing frame fastened to the top of the lower fixing frame by bolts, and is formed to have an inner diameter larger than a predetermined circle constituting the outer diameter of the gas pipe by a predetermined length, so that the inner circumferential surface of the fixing frame is the gas pipe Doedoe coupled to have a certain distance with respect to the outer circumferential surface of, a plurality of the fixing frame is connected to the gas pipe at predetermined intervals, providing a seismic support for gas pipe.

In addition, the buffer member includes: a buffer inner surface made of chloroprene rubber and in contact with the outer circumferential surface of the gas pipe; And a buffer outer surface in contact with the inner circumferential surface of the fixed frame; including, but the buffer inner surface is formed in a hollow shape to have a circular cross section having an inner diameter of 98% to 95% of the outer diameter of the gas pipe, the buffer outer surface is : A protrusion having an outer diameter of 102% to 105% of the inner diameter of the fixing frame; and a depression having an outer diameter of 130% to 135% of the diameter of the inner surface of the buffer.

Further, the buffer member may be formed in a circular shape by connecting a plurality of semicircular buffer member pieces having one or more of the protrusions and depressions, respectively, repeatedly, so that the plurality of buffer member pieces are continuously connected.

According to an embodiment of the present invention, it is possible to add a seismic function to gas piping of old facilities that have been previously installed.

In addition, since the operator can simply replace the clamp (fixing device) without difficulty in construction/installation, the time required for work can be significantly reduced.

In addition, by configuring the buffer member with an inexpensive material, the production cost can be remarkably lowered.

In addition, by constructing the buffer member in a modular form, it is possible to properly distribute the load when an earthquake occurs, and when severe vibration occurs, it is possible to prevent breakage of the gas pipe by not resisting and partly falling off.

1 is a perspective view of a seismic support for gas piping according to an embodiment of the present invention (gas piping not shown).
2 is a perspective view of an earthquake-resistant support buffer member for gas piping according to an embodiment of the present invention.
3 is a perspective view of an earthquake-resistant support for gas piping according to an embodiment of the present invention.
4 (no buffer member) and 5 (rubber without shape design) are diagrams showing finite element analysis states for the seismic support for gas piping according to a comparative example.
6 is a view showing a state of finite element analysis for a seismic support for gas piping according to an embodiment of the present invention.
7 is a view showing a state of finite element analysis for a seismic support for gas piping according to a comparative example and an embodiment of the present invention.

Hereinafter, various embodiments of this document will be described with reference to the accompanying drawings. However, it should be understood that this is not intended to limit the technology described in this document to specific embodiments, and includes various modifications, equivalents, and/or alternatives of the embodiments of this document. . In connection with the description of the drawings, like reference numerals may be used for like elements.

In this document, expressions such as "has," "may have," "includes," or "may include" indicate the existence of a corresponding feature (eg, numerical value, function, operation, or component such as a part). , which does not preclude the existence of additional features.

In this document, expressions such as “A or B,” “at least one of A and/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together. . For example, “A or B,” “at least one of A and B,” or “at least one of A or B” (1) includes at least one A, (2) includes at least one B, Or (3) may refer to all cases including at least one A and at least one B.

As used in this document, the expression "configured to" means "suitable for," "having the capacity to," depending on the circumstances. ," "designed to," "adapted to," "made to," or "capable of." The term "configured (or set) to" may not necessarily mean only "specifically designed to" hardware. Instead, in some contexts, the phrase "device configured to" may mean that the device is "capable of" in conjunction with other devices or components.

Terms used in this document are only used to describe a specific embodiment, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field described in this document. Among the terms used in this document, terms defined in a general dictionary may be interpreted as having the same or similar meaning as the meaning in the context of the related art, and unless explicitly defined in this document, an ideal or excessively formal meaning. not be interpreted as In some cases, even terms defined in this document cannot be interpreted to exclude the embodiments of this document.

Of course, various modifications can be made by those skilled in the art without departing from the gist of the present invention claimed in the claims of the present invention, and these modifications are the technical spirit of the present invention or It should not be understood individually from the perspective.

According to an embodiment of the present invention, the gas pipe supported on the wall of the facility; a fixed frame provided between the gas pipe and the facility; and a buffer member provided between the fixing frame and the gas pipe to absorb vibration of the fixing frame and transmit the vibration to the gas pipe, wherein the fixing frame is bolted and fixed to the wall of the facility to support the gas pipe. lower fixed frame; and an upper fixing frame fastened to the top of the lower fixing frame by bolts, and is formed to have an inner diameter larger than a predetermined circle constituting the outer diameter of the gas pipe by a predetermined length, so that the inner circumferential surface of the fixing frame is the gas pipe Doedoe coupled to have a certain distance with respect to the outer circumferential surface of, a plurality of the fixing frame is connected to the gas pipe at predetermined intervals, providing a seismic support for gas pipe.

The fixing frame is preferably provided at intervals of about 2m.

In addition, the buffer member includes: a buffer inner surface made of chloroprene rubber and in contact with the outer circumferential surface of the gas pipe; And a buffer outer surface in contact with the inner circumferential surface of the fixed frame; including, but the buffer inner surface is formed in a hollow shape to have a circular cross section having an inner diameter of 98% to 95% of the outer diameter of the gas pipe, the buffer outer surface is : A protrusion having an outer diameter of 102% to 105% of the inner diameter of the fixing frame; and a depression having an outer diameter of 130% to 135% of the diameter of the inner surface of the buffer.

By configuring the size and shape of the buffer member as described above, the gas pipe-buffer member-fixing frame can be fixed through a fit-to-fit without a separate adhesive or fastening member (such as a screw).

4 to 6 are a fixed frame made of cast iron (Comparative Example 1, FIG. 4), a form in which hollow rubber is filled inside a fixed frame made of cast iron (Comparative Example 2, FIG. 5), an embodiment of the present invention ( 6), a vibration load assuming an earthquake was applied, and the simulation result for this was confirmed with the ANSYS program.

Comparative Example 1 Comparative Example 2 Example X-axis frequency 35.9728 13.8808 10.2892 Y-axis frequency 44.4321 14.2278 9.57758 Z-axis frequency 128.608 6.87678 9.57758

Table 1 shows the frequencies according to the Comparative Examples and Examples, and it can be seen that the frequencies appear significantly lower in the Examples.

However, the Z-axis frequency of Comparative Example 2 appears to be lower than that of the embodiment, but according to simulation results, the intensity of vibration applied to the gas pipe to the extent that the gas pipe deviates to the outside of the fixed frame (FIG. 7 a) appears large can confirm that In contrast, in the embodiment of the present invention, it can be confirmed that the gas pipe vibrates within a safe range (FIG. 7 b).

Therefore, the strength and frequency of vibration applied to the gas pipe are remarkably low in the embodiment of the present invention, and thus sufficient earthquake resistance can be secured.

Further, the buffer member may be formed in a circular shape by connecting a plurality of semicircular buffer member pieces having one or more of the protrusions and depressions, respectively, repeatedly, so that the plurality of buffer member pieces are continuously connected.

1: Gas piping
2: lower fixed frame
3: upper fixed frame
4: buffer inner surface
5: Protrusion
6: depression
7: Buffer member piece
8: buffer member
9 : fixed frame

Claims (3)

Gas piping supported on the wall of the facility;
a fixed frame provided between the gas pipe and the facility; and
A buffer member provided between the fixed frame and the gas pipe to buffer the vibration of the fixed frame and transmit it to the gas pipe;
The fixed frame is:
a lower fixing frame bolted to and fixed to a wall surface of a facility to support the gas pipe; and
Including; upper fixed frame bolted to the upper portion of the lower fixed frame,
By being formed to have an inner diameter larger than a predetermined length by a predetermined length than a predetermined circle constituting the outer diameter of the gas pipe, the inner circumferential surface of the fixing frame is coupled to have a certain distance from the outer circumferential surface of the gas pipe,
Seismic support for gas piping, in which a plurality of the fixing frames are connected to gas piping at predetermined intervals The method of claim 1,
The buffer member is:
It is made of chloroprene rubber material,
a buffer inner surface in contact with the outer circumferential surface of the gas pipe; and
Including; a buffer outer surface in contact with the inner circumferential surface of the fixing frame,
The buffer inner surface is:
It is formed in a hollow shape to have a circular cross section having an inner diameter of 98% to 95% of the outer diameter of the gas pipe,
The buffer outer surface is:
Protrusions having an outer diameter of 102% to 105% of the inner diameter of the fixing frame; and
Seismic support for gas piping, including a recessed portion having an outer diameter of 130% to 135% with respect to the diameter of the inner surface of the buffer The method of claim 2,
The buffer member is:
Seismic support for gas piping, formed in a circular shape by connecting a plurality of semicircular buffer member pieces having one or more of the protrusions and recesses repeatedly, respectively, and connecting a plurality of buffer member pieces continuously.

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