WO2023048304A1

WO2023048304A1 - Elasto-plastic pipe support device

Info

Publication number: WO2023048304A1
Application number: PCT/KR2021/013017
Authority: WO
Inventors: 조성국
Original assignee: 이노스기술 주식회사
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2023-03-30
Also published as: KR20230043381A

Abstract

The present invention relates to an elasto-plastic pipe support device comprising: a cylindrical housing; a first cover part and a second cover part for blocking opposite end openings of the housing, respectively; an elasto-plastic coil, one end of which is fixed to the second cover part inside the housing; a moving disc which is coupled to the other side of the elasto-plastic coil and is movable while being in close contact with the inner wall surface of the housing by an O-ring; a moving shaft inserted into the housing through a through-hole provided at the center of the first cover part so that the end of the inserted part is fixed to the moving disc; a first connection part fixed to the opposite end of the moving shaft to be coupled to a supporting frame; and a second connection part, one end of which is coupled to the outside of the second cover part, and the other end of which is coupled to a pipe.

Description

Elasto-plastic pipe support device

The present invention relates to a pipe support device using an elasto-plastic coil spring damper, and more particularly, to an elasto-plastic pipe support device for damping.

In general, power plants, industrial plants, etc., are installed with piping to move high-temperature and high-pressure gas or fluid.

These pipes have various sizes and types, and an elbow pipe connecting a straight pipe and a corner portion is assembled and connected, and the pipe is fixed to a pillar or wall of a building by a separate fixing means.

When a fluid is transported through a pipe, the fluid flowing in the pipe exerts pressure on the surface of the pipe and deforms the pipe. As a result, there is a problem in that the pipe is deformed or damaged because vibration is generated in the pipe.

In addition, when vibration occurs in the pipe, it is largely classified into two types. Normal operation vibration caused by the operation characteristics of fluid devices by pumps or fans and geometrical characteristics (natural frequency of the pipe system) of the piping system, and test operation of the power plant Or, vibration due to sudden pressure change due to stoppage, sudden operation of valve or sudden stop of pump, and transient vibration when a large force is applied to major equipment, pipe supports, or structures in a short time.

In addition, vibration of pipes due to external forces such as earthquakes may occur.

When the pipe is damaged due to vibration, the gas or fluid flowing through the pipe is discharged to the outside, causing serious damage to workers or machinery in the workplace.

In order to prevent damage to pipes due to vibration, various design criteria for earthquake-resistant or damping designs have been proposed.

In particular, in the case of nuclear power plants, there is a regulatory standard (KINS/RS-N03.00) that assigns a safety grade to a pipe support and a safety grade for a pipe support that supports the pipe and regulates it during design.

Japan's seismic design technology regulation (JEAC 4601) for nuclear power plants, where earthquakes frequently occur, specifies the use of elasto-plastic supports.

Korean Patent Registration No. 10-1951469 (seismic pipe support for buildings, registered on February 18, 2019) describes a pipe support that is arranged on the ceiling of a building to fix pipes and is capable of damping vibration.

Specifically, a buried coupling part buried in a ceiling structure, a support member provided in a suspended state from the ceiling structure while its upper end is coupled to the buried coupling part, and installed to move up and down elastically at the lower end of the support member. In addition, an earthquake-resistant pipe support for a building including a gripping hanger for gripping a pipe while being installed to be vertically adjustable from the support member is described.

However, the above registered patent has a disadvantage in that it is not easy to construct, such as having to be buried in the ceiling, and it is not easy to apply to pipes of various diameters due to the application of the holding hanger that wraps and supports the outer surface of the pipe. Also, it is not suitable for vibration where large displacement occurs, such as during an earthquake.

In view of the above problems, an object of the present invention is to provide an elasto-plastic pipe support device that is easy to install, maintain, and repair and can be applied regardless of the diameter of the pipe or the installation position of the pipe.

Elasto-plastic pipe support device of the present invention for solving the technical problem as described above, including an elasto-plastic coil damper 100 connecting the pipe 300 and the support frame 200, the elasto-plastic coil damper 100 The present invention relates to an elasto-plastic pipe support device, a cylindrical housing 120, a first cover portion 150 and a second cover portion 160 for blocking each of the openings at both ends of the housing 120, An elastoplastic coil 110 having one end fixed to the second cover 160 inside the housing 120 and coupled to the other side of the elastomeric coil 110, the housing by an O-ring 132 The movable disk 130 adheres to the inner wall surface of the 120 and is movable, and is inserted into the housing 120 through the through hole 152 provided in the center of the first cover portion 150, and the inserted A moving shaft 140 whose end is fixed to the moving disk 130, a first connection part 170 fixed to the opposite end of the moving shaft 140 and coupled to the support frame 200, One end is coupled to the outside of the second cover portion 160, and the other end may include a second connection portion 180 coupled to the pipe 300.

In an embodiment of the present invention, the silicon 121 filled in the space formed by the movable disk 130, the second cover part 160, and the housing 120 may be further included.

In an embodiment of the present invention, the support frame 200 is a single frame protruding in one direction from the support surface, and the first connection part 170 may be coupled to a side surface or top surface of the single frame.

In an embodiment of the present invention, the support frame 200 includes a pair of vertical frames protruding in parallel from the support surface and a horizontal frame interconnecting upper ends of the pair of vertical frames, 1 connection part 170 may be coupled to the horizontal frame.

In an embodiment of the present invention, the support frame 200 includes a pair of vertical frames protruding in parallel from the support surface, a first horizontal frame interconnecting upper ends of the pair of vertical frames, and the first It is spaced apart from the first transverse frame to provide a space into which the pipe 300 is inserted, and includes a second transverse frame interconnecting the pair of vertical frames, and the elastomeric coil damper 100 is applied in plural to connect each of the vertical frames, the first horizontal frame and the second horizontal frame to the pipe 300 .

In an embodiment of the present invention, the elastomeric coil 110, the number of effective turns is 4 or more, the wire diameter may be 10mm, the center diameter is 40mm, the height is 150mm, the yield displacement is 4mm.

The present invention combines an elasto-plastic coil damper between the support frame and the pipe, thereby improving the damping performance, so that construction and maintenance are easy, and there is an effect of preventing damage to the pipe even with large displacement occurring during an earthquake .

In addition, the present invention allows the elasto-plastic coil damper to be coupled to the outer surface of the pipe, so that it can be applied regardless of the diameter or installation location of the pipe, standardizing the pipe support, and reducing manufacturing and logistics costs due to standardization It works.

1 is a configuration diagram of an embodiment of an elasto-plastic pipe support device of the present invention.

2 is a block diagram of an elasto-plastic coil damper applied to the present invention.

Figure 3 and Figure 4 is an embodiment of the configuration of the elasto-plastic pipe support device of the present invention, respectively.

5 is a configuration diagram of an elasto-plastic coil applied to the present invention.

6 is a configuration diagram of another embodiment of a movable disk applied to the present invention.

- Description of codes -

100: carbonaceous coil damper 110: carbonaceous coil

120: housing 130: moving disk

140: moving shaft 150: first cover

160: second cover 170: first connection

180: second connection part 200: support frame

300: piping

In order to fully understand the configuration and effects of the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be implemented in various forms and various changes may be made. However, the description of the present embodiment is provided to complete the disclosure of the present invention and to completely inform those skilled in the art of the scope of the invention to which the present invention belongs. In the accompanying drawings, the size of the components is enlarged from the actual size for convenience of description, and the ratio of each component may be exaggerated or reduced.

Terms such as 'first' and 'second' may be used to describe various elements, but the elements should not be limited by the above terms. The above terms may only be used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a 'first element' may be named a 'second element', and similarly, a 'second element' may also be named a 'first element'. can Also, singular expressions include plural expressions unless the context clearly indicates otherwise. Terms used in the embodiments of the present invention may be interpreted as meanings commonly known to those skilled in the art unless otherwise defined.

Hereinafter, with reference to the accompanying drawings, an elasto-plastic pipe support device according to an embodiment of the present invention will be described in detail.

1 is a configuration diagram of an embodiment of an elasto-plastic pipe support device of the present invention, and FIG. 2 is a configuration diagram of an elasto-plastic coil damper in FIG.

Referring to Figures 1 and 2, respectively, the present invention is a support frame 200 fixed to the ceiling, wall, floor, etc. of a building, and a pipe 300 having one end fixed to the support frame 200 and the other end being supported Fixed to, it is configured to include an elasto-plastic coil damper 100 that provides vibration damping characteristics by an elasto-plastic coil inside.

The elasto-plastic coil damper 100 includes a cylindrical housing 120, a first cover part 150 and a second cover part 160 blocking each of the openings at both ends of the housing 120, and the housing 120 It is coupled to the other side of the elastomeric coil 110, one end of which is fixed to the second cover portion 160, and the other side of the elastomeric coil 110 from the inside, and the inside of the housing 120 by the O-ring 132. It is inserted into the housing 120 through the movable disk 130 that is in close contact with the wall and can move, and the through hole 152 provided in the center of the first cover part 150, so that the end of the inserted part A moving shaft 140 fixed to the moving disk 130, a first connection part 170 fixed to the opposite end of the moving shaft 140 and coupled to the support frame 200, and the second cover part ( 160) is coupled to one end from the outside, and the other end is configured to include a second connection portion 180 coupled to the pipe 300.

A region around the carbonaceous coil 110 is filled with silicon 121 .

That is, the space formed by the second cover part 160, the movable disk 130, and the housing 120 is filled with silicon 121.

Referring to the configuration and operation of the elasto-plastic pipe support device of the present invention configured as described above in more detail as follows.

First, the support frame 200 may use a structure such as an H-shaped beam, and in particular, a welded structure without yarn material may be used.

The support frame 200 acts in a plastic region to reduce the seismic response by using energy absorption by elasto-plastic behavior.

Referring back to FIG. 1, the support frame 200 has a long shape in one direction, and the elastomeric coil damper 100 is coupled to a part of the side of the support frame 200, located on the side of the support frame 200 A configuration for supporting the pipe 300 is shown.

The support frame 200 may have a structure protruding upward from the floor surface, and conversely, may protrude downward from the ceiling or protrude horizontally from the wall surface.

Such an example is an example of a cantilever type, and the support frame 200 of a frame type or a support frame type may be used.

Figure 3 is a block diagram of another embodiment of the present invention to which the support frame 200 of the frame method is applied, Figure 4 is a block diagram of another embodiment of the present invention to which the support frame 200 of the support frame method is applied.

Referring to Figure 3, the present invention is a pair of vertical frames (210, 220) are fixed to the installation surface, the upper ends of the vertical frames (210, 220) are connected to each other, the first of the elastic coil damper (100) It may be configured to include a horizontal frame 230 to which the connecting portion 170 is fixed.

Compared to the cantilever type, the support frame 200 of the frame type can support more firmly, increase rigidity, and reduce displacement of the support frame 200 to improve vibration control characteristics.

FIG. 4 provides a structure capable of supporting vibration control of the pipe 300 on four sides by further expanding the structure of FIG. 3 .

That is, the horizontal frame 230 extending the length of the pair of

vertical frames

210 and 220 extending vertically from the installation surface and connecting the ends of the

vertical frames

210 and 220, and the vertical frame 210, 220) can be configured by adding another horizontal frame 240 connecting the central portions to each other.

At this time, the pipe 300 passes through the space formed by the two

vertical frames

210 and 220 and the two

horizontal frames

230 and 240, and the pipe 300 is moved up and down by the four elastic coil dampers 100. and left and right are respectively coupled.

The support frame 200 having such a structure has a feature of further increasing the absorption energy by further increasing the rigidity.

As such, the support frame 200 may be manufactured in various shapes as needed.

At least one elasto-plastic coil damper 100 is coupled to the support frame 200 of the above various examples, and a pipe 300 is coupled to the other side of the elasto-plastic coil damper 100.

The coupling at this time may be welding or coupling using a fastening means such as a bolt.

The elasto-plastic coil damper 100 exhibits a damping effect mainly by the action of the elasto-plastic coil 110 disposed inside the housing 120.

The elasto-plastic coil 110 has at least four or more effective turns, a wire diameter of 10 mm, a center diameter of 40 mm, a height of 150 mm, and a yield displacement of 4 mm. The primary stiffness is limited to 420 kN/m.

Design details of the elasto-plastic coil 110 are shown in FIG.

It was confirmed that the damping ratio of the elasto-plastic coil 110 of this design exceeds 25%. This is an indicator of very good damping performance, and can significantly improve the seismic performance of a piping system.

Such an elastomeric coil 110 acts within a region filled with silicon 121.

The present invention can absorb vibration in the inelastic section and the elastic section using the elasto-plastic coil 110 and the silicon 121.

That is, the elasto-plastic coil 110 has an elastic section and an inelastic section, which is a plastic section, and assuming that the behavior range of the spring is, for example, 26 mm, the elasto-plastic coil 110 does not absorb vibration until the first 8 mm. That is, the vibration cannot be absorbed in the elastic section, and the vibration can be absorbed by the filled silicon 121 in the elastic section.

Therefore, in the present invention, vibration can be absorbed in the elastic section as well as the plastic section of the elasto-plastic coil 110.

The elasto-plastic coil 110 is supposed to be fixed to one surface of the second cover part 160 within the cylindrical housing 120.

The second cover 160 covers one open surface of the housing 120 and is firmly fixed by bolts 162 coupled to the side of the second cover 160 from the side of the housing 120 .

In addition, a coupling hole is formed in the center of the second cover portion 160, and the coupling shaft 181 of the second connection portion 180 is inserted and fixed into the coupling hole. 182 is a fixing nut.

On the other side of the housing 120, the first cover part 150 is coupled. The first cover part 150 is also firmly fixed by a bolt 151 coupled to the housing 120 side.

A through hole 152 is provided at the center of the first cover part 150, and the moving shaft 140 is inserted into the through hole 152. A first connection part 170 having a coupling shaft 171 is fixedly installed outside the moving shaft 140 .

The moving disk 130 is coupled to the opposite end of the elastic coil 110 fixed by the bolt 161 to the surface of the second cover 160 located inside the housing 120.

The moving disk 130 has a disk-like structure and is coupled and fixed to the elasto-plastic coil 110 by bolts 131.

The end of the moving shaft 140 is inserted into the center of the moving disk 130, and loosening can be prevented by the fixing nut 141.

As described above, the present invention can secure structural reliability against vibration due to the robust structural features.

An O-ring 132 is coupled to the circumference of the movable disk 130, and the O-ring 132 contacts the inner surface of the housing 120 to maintain airtightness of the area where the silicon 121 is injected.

In this structure, by the action of the elasto-plastic coil 110 and the silicon 121, it is possible to provide damping for the vibration of the pipe 300 or the vibration of the support frame 200.

6 is a front view of a movable disk 130 according to another embodiment of the present invention.

Referring to FIG. 6, the movable disk 130 is located between two regions of the housing 120 in which fluid is divided based on the movable disk 130 and the O-ring 132, in addition to the coupling hole 133 to which the bolt 131 described above is coupled. It may include a through hole 134 through which fluid may pass.

In such a structure, the previously described silicon 121 may be replaced with a fluid, or in a state in which the silicon 121 is partially filled, the fluid may be filled in a region where the silicon 121 is not filled.

The fluid may completely or partially fill the inside of the housing 120 .

In the case of partial filling, 80 to 90% of the volume of the fluid may be filled in the volume of the inner space of the housing 120 . This may be a fluid volume ratio in a case where the silicon 121 is completely replaced and in a region where the silicon 121 is filled and the remaining silicon 121 is not filled.

The fluid is assumed to be oil having a higher viscosity and specific gravity than water.

Therefore, when vibration occurs, the elasto-plastic coil 110 flows, and at this time, the fluid moves from the right to the left or from the left to the right of the moving disk 130 through the through hole 134.

This generates frictional force due to the moving speed and viscosity of the fluid while the fluid moves through the through hole 134, and serves to damp vibration using the frictional force.

Embodiments according to the present invention have been described above, but these are merely examples, and those skilled in the art will understand that various modifications and embodiments of equivalent range are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined by the following claims.

The present invention relates to a support device that performs vibration suppression using the laws of nature, and has industrial applicability.

Claims

Including an elasto-plastic coil damper 100 connecting the pipe 300 and the support frame 200,

The elasto-plastic coil damper 100,

a cylindrical housing 120;

a first cover part 150 and a second cover part 160 which block openings at both ends of the housing 120, respectively;

An elastoplastic coil 110 having one end fixed to the second cover part 160 from the inside of the housing 120;

A movable disk 130 coupled to the other side of the elastomeric coil 110 and movable by being in close contact with the inner wall surface of the housing 120 by an O-ring 132;

A moving shaft 140 inserted into the housing 120 through the through hole 152 provided in the center of the first cover part 150 and having an end of the inserted part fixed to the moving disk 130;

A first connection part 170 fixed to the opposite end of the moving shaft 140 and coupled to the support frame 200; and

Elastic-plastic pipe support device including a second connection portion 180 having one end coupled to the outside of the second cover portion 160 and the other end coupled to the pipe 300.
According to claim 1,

Elasto-plastic pipe support device further comprising silicon 121 filled in the space formed by the movable disk 130, the second cover 160, and the housing 120.
According to claim 1,

The support frame 200,

It is a single frame protruding in one direction from the support surface,

The first connecting portion 170 is an elasto-plastic pipe support device, characterized in that coupled to the side or top surface of the single frame.
According to claim 1,

The support frame 200,

A pair of vertical frames protruding in parallel from the support surface;

Including a horizontal frame interconnecting the upper ends of the pair of vertical frames,

The first connection portion 170 is an elasto-plastic pipe support device, characterized in that coupled to the transverse frame.
According to claim 1,

The support frame 200,

A pair of vertical frames protruding in parallel from the support surface;

A first horizontal frame interconnecting upper ends of the pair of vertical frames;

A second horizontal frame spaced apart from the first horizontal frame to provide a space into which the pipe 300 is inserted and connecting the pair of vertical frames to each other;

An elasto-plastic pipe support device characterized in that a plurality of the elasto-plastic coil dampers 100 are applied to connect the pipe 300 with each of the vertical frames, the first horizontal frame and the second horizontal frame. .
According to claim 1,

The elastomeric coil 110,

An elasto-plastic pipe support device characterized in that the number of effective turns is 4 or more, the wire diameter is 10 mm, the center diameter is 40 mm, the height is 150 mm, and the yield displacement is 4 mm.
According to claim 1,

The movable disk 130 includes a plurality of through holes 134,

An elasto-plastic pipe support device that allows fluid completely or partially filled in the housing 120 to pass.