WO2014193087A1

WO2014193087A1 - Multi-dimensional buffering device for pipe

Info

Publication number: WO2014193087A1
Application number: PCT/KR2014/003711
Authority: WO
Inventors: 조선영; 하승우; 안종구; 백진수; 최현수; 나충하
Original assignee: 케이.엘.이.에스 주식회사
Priority date: 2013-05-27
Filing date: 2014-04-28
Publication date: 2014-12-04
Also published as: KR101305935B1

Abstract

A multi-dimensional buffering device for a pipe according to the present invention is a buffering device disposed between a pipe and a support surface to absorb vibration and shock applied to the pipe, and comprises: a main buffering device connected to the pipe or the support surface to absorb a shock applied in a linear direction; and a plurality of sub buffering devices, each of which has one side connected to the main buffering device and the other side connected to the support surface or the pipe to absorb a shock applied in a lateral direction, and thus shock applied in every direction of the pipe can be absorbed by a buffering unit and a buffering action is performed by using the elastic force of a buffering spring and fluid flow resistance, thereby improving shock absorbing performance.

Description

Multidimensional Shock Absorber for Piping

The present invention is provided on the outer surface of the pipe to mitigate the shock applied to the outside of the pipe to prevent damage to the pipe, and relates to a multi-dimensional shock absorber for the pipe that can be shock-absorbed even if the impact is applied in any direction of the pipe.

Generally, the shock absorber for piping is disposed between the outer surface and the support surface of the pipe, and when external shock (earthquake, explosion accident, hammering, etc.) is applied, the pipe is damaged by absorbing the shock by using the flow resistance of the fluid or the elastic force of the spring. It is a device to prevent that.

In particular, in the case of primary piping inside a nuclear power plant, pipes carrying dangerous goods such as high-temperature and high-pressure plumbing pipes of thermal power plants, and pipes carrying dangerous goods such as gas pipes and oil pipelines, large-scale radiation spills may occur when damaged by an earthquake or other external impact. Seismic design is indispensable because it causes secondary risks such as damage to major equipment such as turbines, human damage and explosion accidents due to strong steam leakage.

The conventional vibration absorbing device for piping is a vibration absorbing device for supporting a piping system and reducing vibration generated in the piping system by external force, as disclosed in Korean Patent Publication No. 10-0349722 (August 09, 2002). Located at both ends to support the pipe, the support portion is provided with a bearing to be able to rotate 360 degrees in all directions therein, the coil spring provided on the cylinder shaft to be elastic and move to the applied external force, The lining which is coupled and linearly reciprocates on the inner surface of the cylinder, creates a friction damping, and increases the contact force between the lining and the cylinder, and maintains a constant magnitude of damping, the corner portion formed between the cylinder shaft and the shoe. And wedges inserted in the washer, and washers built between the ends of the coil spring and the shoe to equalize the compressive force of the coil spring.

Here, the external shock applied to the pipe cannot know in which direction the pipe will be applied. In the conventional pipe vibration absorbing device, since the structure is connected to the pipe by a support part provided with a bearing, there is a problem in that vibration applied in a direction other than the linear direction in which the vibration absorbing device is installed cannot be absorbed at all.

In addition, the conventional vibration absorbing device for piping has a problem that the buffering capacity is inferior because the buffering action only by the elastic force of the coil spring and the damping force of the lining.

Prior art literature

Patent Document (Patent Document 0001) Registered Patent Publication 10-0349722 (August 09, 2002)

Accordingly, an object of the present invention is to provide a multi-dimensional shock absorber for piping that can improve the shock absorbing performance by performing the buffering action using the elastic force of the spring and the flow resistance of the fluid.

Another object of the present invention is to provide a multi-dimensional shock absorber for piping that can be seen by the display the degree of contraction and relaxation of the shock absorber to the occurrence of the impact.

It is still another object of the present invention to provide a sub shock absorber on both sides of the main shock absorber so that the shock transmitted in the straight direction is absorbed by the main shock absorber, and the shock transmitted in the lateral direction is absorbed by the sub shock absorber and thus the impact of the pipe. It is to provide a multi-dimensional buffer device for piping that can improve the buffer performance.

The problem to be solved by the present invention is not limited to the above-mentioned technical problem and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description. .

In order to achieve the above object, the multi-dimensional shock absorber for the pipe of the present invention is disposed between the pipe and the support surface to absorb the vibration and shock applied to the pipe, it is connected to the pipe or the support surface to act in a straight direction Shock absorber main shock absorber, and one side is connected to the main shock absorber and the other side is connected to the support surface or pipe in the lateral direction

A plurality of sub-absorbers to absorb the acting shock.

Further comprising a fixed plate in the form of a disc fixed to the pipe or the support surface of the present invention, wherein the main shock absorber is hinged to the center of the fixing plate, the sub shock absorber at a predetermined distance in the circumferential direction to the edge of the fixing plate It is characterized in that the hinge is connected.

The main shock absorber of the present invention includes a cylindrical main cylinder filled with oil therein, and a first piston which linearly moves in close contact with an inner surface of the main cylinder and partitions the inside of the main cylinder into a first chamber and a second chamber. And a check valve mounted inside the first piston to generate a flow resistance, a piston rod connected to one side of the piston, and a slide moveable on an outer surface of the main cylinder, the piston being connected to the piston rod. A cover member which is moved together with the movement of the rod, a main housing having a third chamber fixed to one end of the main cylinder and filled with oil therein, a second piston linearly moved in close contact with the inner surface of the main housing, And a spring providing an elastic force to the second piston.

It is characterized in that it further comprises a displacement measuring sensor connected to the cover member of the present invention to measure the movement amount of the cover member, and a display unit for displaying the displacement value measured by the displacement measuring sensor.

The sub-shock absorber of the present invention includes a sub-cylinder filled with oil, a third piston disposed to be linearly movable in close contact with the inside of the sub-cylinder, and having an orifice formed at the center thereof to generate a flow resistance; A piston rod connected to a third piston and connected to a connecting portion by a third connecting joint, a sub housing mounted on the other side of the sub cylinder, a fourth piston arranged to be linearly movable in the sub housing, and the fourth piston. It characterized in that it comprises a spring to provide an elastic force to.

As described above, the multi-dimensional shock absorber for piping of the present invention can improve the shock absorption performance by performing the buffering action by using the spring force and the flow resistance of the fluid generated when passing through the orifice.

In addition, the multi-dimensional shock absorber for piping of the present invention by displaying the shrinkage and relaxation degree of the shock absorber on the display, the operator can determine whether the displacement of the pipe and the occurrence of restraint.

In addition, the multidimensional shock absorber for piping according to the present invention includes a plurality of sub shock absorbers on both sides of the main shock absorber, so that the shock transmitted in the linear direction is absorbed by the main shock absorber, and the shock transmitted in the lateral direction is the sub shock absorber. Absorption can improve the shock absorbing performance of the pipe.

1 is a perspective view of a multi-dimensional shock absorber for piping according to an embodiment of the present invention.

2 is a cross-sectional view of a multi-dimensional shock absorber for piping according to an embodiment of the present invention.

3 is a cross-sectional view of the main shock absorber of the multi-dimensional shock absorber for piping according to an embodiment of the present invention.

4 is a cross-sectional view of a sub buffer device of a multi-dimensional buffer device for a pipe according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. Definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view of a multi-dimensional shock absorber for piping according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the multi-dimensional shock absorber for piping according to an embodiment of the present invention.

1 and 2, the multi-dimensional shock absorber for a pipe according to an embodiment of the present invention is connected to a pipe or a support surface main shock absorber 100 to absorb the shock acting in a linear direction, and one side is the main It is connected to the shock absorber 100 and the other side is connected to the support surface or pipe includes a plurality of sub-absorber 200 to absorb the shock acting in the lateral direction.

1 and 2 illustrate that the lengths of the multi-axes of the sub-buffer 200 are equal, but the present invention may be described and applied to the sub-buffer 200 having a different length.

As shown in FIG. 3, the main shock absorber 100 is linearly moved in close contact with an inner surface of the main cylinder 10 having a cylindrical shape filled with oil therein, and the main cylinder 10 and the main cylinder 10. The piston rod 30 is connected to one side of the piston 20 and connected to the first connection joint 32 and the first piston 20 partitioning the inside into the first chamber 12 and the second chamber 14. ), A main housing 50 fixed to one end of the main cylinder 10 and having a third chamber 52 filled with oil therein, and a linearly moving agent in close contact with an inner surface of the main housing 50. And a second piston 54 and a spring 56 that provides an elastic force to the second piston 54.

A fixing plate 80 in the form of a disc is fixed to the pipe or the support surface. The main shock absorber 100 is hinged to the center of the fixing plate 80, and the sub shock absorber 200 is hinged to the edge of the fixing plate 80 at a predetermined interval in the circumferential direction.

The other end of the main cylinder 10 is mounted with a packing member 16 which seals the other end of the main cylinder 10 and passes through the piston rod 40 in a sealed state.

In addition, the cover member 34 for preventing the inflow of dust and other foreign substances into the gap between the packing member 16 and the main cylinder 10 on the outer surface of the main cylinder 10 and for measuring the analog displacement measuring instrument 41. Is fitted. The cover member 34 is slidably disposed on the outer surface of the main cylinder 10 and fixed to the piston rod 30 to move together when the piston rod 30 is moved.

One side of the main cylinder 10 is provided with a confirmation window 45 that can visually check the amount of oil inside the main cylinder 10.

On the outside of the main cylinder 10 is connected to one side of the cover member 34, the digital displacement measuring sensor 40 for measuring the displacement of the cover member 34 and the displacement amount in accordance with the signal applied from the displacement measuring sensor 40 Display unit 42 for displaying the display is installed.

That is, when an impact is applied to the pipe, the piston rod 30 is linearly moved, the cover member 34 fixed to the piston rod 30 is moved together with the piston rod 30, and the displacement measuring sensor 40 is covered. The displacement amount of the cover member 34 is connected to the member 34, and the displacement amount is displayed on the display unit 42. In this case, the display unit 42 is displayed in a manner in which the user can easily check the displacement amount according to the signal applied from the displacement measuring sensor 40. That is, the displacement amount is numerically displayed on the display window 44 of the display unit 42, and a lamp 46 such as safety / warning / danger lights on the upper surface of the display window 44 so that the current situation can be easily confirmed.

The first piston 20 includes a first piston body 130 having a piston rod 30 fixed therein and a first flow passage 22 communicating with the first chamber 12 and a first piston body 130. The second piston body 135, which is fixed and communicates with the second chamber 14, forms a second piston body 135, and is formed at a point where the first passage 22 and the second passage 26 meet each other and are checked. And a check valve receiver 136 to which the valve 66 is mounted.

As shown in FIGS. 2 and 3, the check valve 66 is disposed in the valve body 132 so as to be linearly movable in the check valve accommodating part 136 and the valve body 132 disposed inside the first piston body 130. And a spring 134 providing elastic force to 132.

The valve body 130 has an accommodating part 136 in which the valve body 132 is accommodated, and a seat surface 138 in which the valve body 132 is in close contact is formed on one surface of the accommodating part 136. In addition, oil filling grooves 140 filled with oil are formed at both ends of the seat surface 138 in a ring shape.

An orifice (not shown) is formed on the seat surface 138 to allow a certain amount of oil to flow even when the valve is closed. This is to prevent the shock when the valve is opened and closed.

The valve body 132 has a flow path 142 through which oil passes radially in the circumferential direction, and the flow path 142 communicates with the oil filling groove 140. One end of the spring 134 is supported on the front surface of the valve body 132 and the other end is supported on the inner surface of the valve body 130 to provide an elastic force in the direction in which the valve is opened to the valve body 132. That is, the spring 134 pushes the front surface of the valve body 132 to provide an elastic force in the direction of separation from the seat surface 138 on the front surface of the valve body 132.

Such a check valve 66 is composed of a pair of two check valves facing each other to generate a flow resistance while opening and closing the flow of the first flow path 22 and the second flow path (26).

The main housing 50 is fixed to one end of the main cylinder 10 and a third chamber 52 is formed therein, and an oil passage 55 is formed on a surface of the main cylinder 10 to be mounted on the second cylinder 52. The oil in the chamber 14 flows into the third chamber 52 or the oil in the third chamber 52 flows into the second chamber 14.

The second piston 54 disposed in the main housing 50 overcomes the elastic force of the spring 56 when the oil of the second chamber 14 flows into the third chamber 52 through the oil passage 55. As it retracts, it linearly moves inside the housing 50 to mitigate the impact. The oil in the third chamber 52 is moved to the second chamber 14 through the oil passage 55 while being advanced by the elastic force of the spring 56.

The other side of the main housing 50 is fixed to the connecting rod 70 is connected to the pipe or the support surface and the second connecting joint 72 is mounted at the end of the connecting rod 70. And, the outer surface of the housing 50 is formed in a plurality in the circumferential direction is formed a connecting portion 74 to which the sub-absorber 200 is connected.

The displacement measuring sensor 40 described above is mounted on the outer surface of the main housing 50.

The sub shock absorber 200 is connected between the fixing plate 80 fixed to the pipe or the support surface and the connecting portion 74 of the main shock absorber 100, and is arranged in a plurality at a predetermined interval in the circumferential direction and acts laterally. It acts as a shock absorber.

As shown in FIG. 4, the sub shock absorber 200 has a cylindrical shape and is disposed to be linearly movable in a state in which the sub cylinder 302 filled with oil is in close contact with the inside of the sub cylinder 302. The third piston 304 to be connected, the piston rod 306 connected to the third piston 304 and connected to the connection portion by the third connection joint 308, and the fixing plate fixed to the other side to the sub cylinder 302 ( The elastic force is applied to the sub-housing 310 fixed by the fourth connection joint 318 to the 130, the fourth piston 316 disposed to be linearly movable in the sub-housing 310, and the fourth piston 316. It provides a spring 314.

One end of the sub cylinder 302 is mounted with the packing member 320 and sealed, and the packing member 320 is linearly moved with the piston rod 306 sealed. The inside of the sub-cylinder 302 is divided into a fourth chamber 330 and a fifth chamber 332 by a third piston 304, and the fourth chamber 330 and the fifth are formed in the third piston 304. As the oil stored in the chamber 332 passes, an orifice 336 is formed that generates flow resistance.

One side of the sub housing 310 is fixed to the sub cylinder 302 and the other side is mounted with a fourth connection joint 318 connected to the fixing plate 80. In addition, an oil passage 340 is formed at a portion at which the sub cylinder 302 of the sub housing 310 is mounted so that oil in the fourth chamber enters and exits the sixth chamber 342 in the sub housing 310.

Such a sub-shock absorber is provided in plurality in the circumferential direction of the main shock absorber at a predetermined interval to serve to absorb the shock applied to the side direction, that is, a direction having a certain angle rather than a right angle direction.

As described above, in the multi-dimensional shock absorber for piping according to the embodiment of the present invention, the shock acting in the straight direction of the pipe is absorbed by the main shock absorber, and the shock acting in the lateral direction of the pipe is absorbed by the sub shock absorber. The shock acting in the direction can be absorbed, thereby improving the shock absorbing performance.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments, and the present invention is not limited to the spirit of the present invention. Various changes and modifications will be possible by those who have the same.

* Explanation of the sign

10: main housing 12: first chamber

14: second chamber 20: first piston

30: piston rod 40: displacement measuring sensor

42: display unit 50: main housing

54: second piston 56: spring

66: check valve 100: main shock absorber

200: sub shock absorber 302: sub cylinder

304: third piston 310: sub-housing

316: fourth piston 80: fixed plate

Claims

A shock absorber disposed between the pipe and the support surface to absorb vibrations and shocks applied to the pipe, the buffer comprising: a main shock absorber connected to the pipe or the support surface to absorb a shock acting in a linear direction; A fixed plate of a disk shape fixed to the pipe or the support surface; And one side is connected to the main shock absorber and the other side is connected to the support surface or pipe includes a plurality of sub-absorber to absorb the shock acting in the lateral direction,

The main shock absorber is hinged to the center of the fixed plate,

The sub buffer device is a multi-dimensional buffer device for a pipe, characterized in that the hinge is connected to the edge of the fixing plate at a predetermined interval in the circumferential direction.
delete
The method of claim 1,

The main shock absorber is a cylindrical main cylinder filled with oil therein,

A first piston linearly moving in close contact with the inner surface of the main cylinder and partitioning the inside of the main cylinder into a first chamber and a second chamber;

A check valve mounted inside the first piston to generate a flow resistance;

A piston rod connected to one side of the piston,

A cover member disposed on the outer surface of the main cylinder so as to be slidable and connected to the piston rod and moved together when the piston rod is moved;

A main housing fixed to one end of the main cylinder and having a third chamber filled with oil therein;

A second piston linearly moved in close contact with the inner surface of the main housing;

Multidimensional shock absorber for piping including a spring for providing an elastic force to the second piston.
The method of claim 3,

The main cylinder is a multi-dimensional shock absorber for piping, characterized in that the confirmation window for confirming the amount of oil inside the main cylinder is formed.
The method of claim 3,

A displacement measuring sensor connected to the cover member to measure the displacement of the cover member, and the display unit for displaying the displacement value measured by the displacement measuring sensor further comprises a multi-dimensional buffer device for piping.
The method of claim 3,

The main housing has an oil passage formed on one side thereof so that the oil of the main cylinder can enter and exit, and a connecting rod is installed on the other side of the main housing and connected to the center of the fixing plate by a second connection joint. shock.
The method of claim 1,

The sub buffer device includes a sub cylinder filled with oil therein;

A third piston disposed in a state of being in close contact with the inside of the sub cylinder and having an orifice formed in the center thereof to generate a flow resistance;

A piston rod connected to the third piston and connected to the connection portion by a third connection joint;

A sub housing mounted on the other side of the sub cylinder;

A fourth piston disposed in the sub-housing so as to be linearly movable;

And a spring for providing an elastic force to the fourth piston.