KR102452521B1 - Switchgear equipped with seismic device - Google Patents

Abstract

The present invention relates to a switchgear with a seismic device and, more specifically, to a switchgear with a seismic device which protects a switchgear used for monitor, control, and protection of a power system from an earthquake and especially offsets vibration transferred in a horizontal direction as well as vibration transferred in a vertical direction, thereby providing high stability.

Description

Switchgear equipped with seismic device

The present invention relates to a switchgear equipped with a seismic device, and more particularly, to protect a switchgear used for monitoring, control and protection of an electric power system from earthquakes, in particular, vibration transmitted in the vertical direction as well as vibration transmitted in the horizontal direction It relates to a switchgear equipped with a seismic resistance device that can offset and provide high stability.

In general, a switchgear is a device used for monitoring, control, and protection of power and electrical systems, and refers to an assembly of unit devices, support structures, and wires connecting them. The switchgear includes a built-in facility capable of receiving power from KEPCO, a control panel capable of operating the built-in facility, and a distribution device for distributing and delivering power to a place where power is to be used.

These switchgears are installed on the ground or indoors and on the roof of buildings and operate continuously for 24 hours, and are constantly exposed to external shocks such as earthquakes. The structure is vulnerable to vibration.

In other words, when a shock caused by an earthquake or fire explosion is transmitted to a general switchboard, various devices installed in the switchboard are damaged or the contact point is detached due to the transmitted shock. There was a problem that a power outage occurred.

In order to solve the above problems and in recent years, large and small earthquakes frequently occur in Korea, a technique for preventing damage to switchgear by mitigating shock waves caused by earthquakes has been proposed. There were technologies that were constructed to prevent distortion caused by electric shocks or to withstand vibrations using fixtures.

Since then, a seismic device for absorbing and mitigating transmitted vibration by arranging a spring or a shock absorber has been proposed to supplement the prior art. It is divided into a vertical vibration seismic device, a horizontal vibration earthquake resistant device for canceling vibration transmitted in a horizontal direction, and a seismic device for canceling vertical and horizontal vibrations.

On the other hand, Republic of Korea Patent Registration No. 10-1326401 (October 31, 2013, registered) is a seismic device that inserts a spherical ball between plate-shaped plates with a convex center and attenuates the vibration while moving horizontally according to external vibration. Since the prior art made as described above uses gravity generated according to the position of the ball as a restoring force, in order to increase the restoring force, the center of the plate of the plate detective must be formed deeply, and when the center of the plate is formed deeply, vertical vibration is generated by horizontal vibration. There was a problem that caused more damage due to vibration and resonance in the vertical direction applied from the outside.

In addition, in Republic of Korea Patent No. 10-1397804 (registered on May 14, 2014), horizontal vibration is attenuated by using the restoring force of a coil spring. Since it is necessary to install a coil spring corresponding to the

And in Republic of Korea Patent No. 10-2230259 (Registered on March 15, 2021), horizontal and vertical vibrations caused by earthquakes are efficiently absorbed by the core part moving in the horizontal or vertical direction and the base slip plate part for absorbing shock external force. However, since the movement of the shock absorbing member is limited when the horizontal vibration occurs, there is a problem in that the attenuation of the horizontal vibration is not made.

Republic of Korea Patent Registration No. 10-1326401 (2013.10.31., registered) Republic of Korea Patent Registration No. 10-1397804 (2014.05.14., registered) Republic of Korea Patent No. 10-2230259 (Registered on March 15, 2021)

The present invention has been proposed to solve the above problems, and it protects the switchboard by mitigating vibration transmitted in the vertical and horizontal directions to improve the stability of the switchboard, as well as devices and cables disposed inside the switchboard An object of the present invention is to provide a switchgear equipped with a seismic resistance device that can prevent the contact portion of the

In addition, the present invention can cancel the vibration transmitted in the horizontal direction as well as offset the vibration in the vertical direction, and can reduce the cost of manufacturing by improving the structure and reduce the cost of maintenance, so it is economical An object of the present invention is to provide a switchgear equipped with this high seismic resistance device.

In order to achieve the above object, the present invention

a main body having electrical devices and their contacts disposed therein for monitoring, control and protection of the power system;

an upper plate coupled to a bottom surface of the main body;

a lower plate disposed at a vertically spaced position from the upper plate;

a pair of support modules coupled to the upper plate and the lower plate, respectively, arranged to be symmetrical to each other;

a pair of core modules respectively coupled to the pair of support modules and detachably coupled to each other;

a prevention cover disposed between the upper plate and the lower plate to prevent foreign substances and moisture from flowing into the pair of support modules and the pair of core modules; and

The pair of support modules,

a support body having a receiving space in which the core module is disposed and having a through hole for coupling with the upper plate or the lower plate;

It includes a cover coupled to the support body,

In the receiving space

It is characterized in that an elastic body for offsetting a horizontal external force is disposed to surround the outer circumferential surface of the retracted core module and to protect the core module from vibration and shock transmitted from a horizontal direction.

In addition, the elastic body for offsetting the horizontal external force is formed in a circular ring shape and disposed in contact with the inner wall of the receiving space and disposed between the outside ring and the core module, a plurality of radially disposed one surface It is characterized in that it includes an inside ring that comes into contact with the core module and elastically supports it.

In addition, the pair of core modules, each of which is disposed on the pair of support modules, includes a support part having an inlet space formed in each recess, and a pair of core bodies formed on the support part and including a coupling part that can be coupled to each other; It is characterized in that it includes an elastic body for supporting a vertical external force that is respectively disposed in the inlet space to support the vibration transmitted in the vertical direction.

In this case, the elastic body for supporting the vertical external force is characterized in that it consists of a multi-layered coil wave spring.

Furthermore, the receiving space includes a lower end into which the core module is introduced, and an upper end formed with a height difference from the lower end, and an annular hooking protrusion protruding toward the upper end is formed on the edge of the lower end, and the upper end portion It is formed to have a relatively wide diameter compared to the lower end, and an annular protruding step protruding to the outside is formed on the edge.

The present invention made as described above can improve the stability of the switchboard by mitigating the vibration transmitted in the horizontal direction as well as the vibration transmitted in the vertical direction. It can prevent damage and has the effect of preventing problems such as power outages in advance.

In addition, the present invention can reduce the manufacturing cost by simplifying the structure, and has the effect of improving the economic efficiency by improving the convenience of maintenance and repair.

1 is an exemplary view showing a switchboard equipped with a seismic device according to the present invention.
Figure 2 is an exemplary view showing a disassembled state of the switchgear equipped with the earthquake-resistant device according to the present invention.
3 is an exemplary view showing a support module constituting the present invention according to the present invention.
Figure 4 is an exemplary view showing an elastic body for offsetting the horizontal external force constituting the present invention.
5 is an exemplary view showing a core module constituting the present invention.
6 is a cross-sectional view illustrating a state in which a switchboard equipped with an earthquake-resistant device according to the present invention is separated.
7 is a cross-sectional view illustrating a state in which a switchgear equipped with an earthquake-resistant device according to the present invention is coupled.
8 is a state diagram schematically showing an operating state of a switchboard equipped with an earthquake-resistant device according to the present invention.

Hereinafter, in addition to the above object, other objects and features of the present invention will become apparent through the description of the embodiments with reference to the accompanying drawings.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, a preferred embodiment of a switchgear equipped with a seismic device according to the present invention will be described with reference to the accompanying drawings.

First, as shown in Figs. 1 and 2, the switchgear 1 equipped with a seismic device according to the present invention has a main body in which electrical devices and their contacts are disposed for monitoring, control and protection of the power system. (10), an upper plate 20 coupled to the bottom surface of the main body 10, a lower plate 30 disposed at a vertically spaced position from the upper plate 20, and the upper plate 20 ) and a pair of support modules 40 respectively coupled to the lower plate 30 and arranged to be symmetrical to each other, and a pair of cores coupled to the pair of support modules 40 to be detachably coupled to each other. It is disposed between the module 50 and the upper plate 20 and the lower plate 30 to prevent foreign substances and moisture from flowing into the pair of support modules 40 and the pair of core modules 50. It includes a preventive cover (60) to prevent.

The main body 10 is made in the form of an empty housing inside, and electrical devices for monitoring, control, protection and distribution of the power system and contacts for connecting the electrical devices and cables are disposed therein.

The main body 10 is provided with an openable and openable door on one side, so that the state of the electrical device and the cable disposed therein can be checked.

The structure and internal arrangement of the main body 10 can be variously changed according to the purpose and location of the installation, and the arranged electrical devices and contacts are well known, so detailed illustration and description will be omitted.

The upper plate 20 is coupled to the bottom surface of the main body 10, is formed in a flat plate shape, a plurality of coupling holes are formed, and is integrally coupled with the main body 10 using coupling bolts and nuts.

The upper plate 20 is preferably made of a metal material to support the load of the main body 10, and corresponds to the size and shape of the main body 10 in order to support the main body 10. The form may be changed.

And the lower plate 30 is fixed to the ground or the bottom surface, is made in the form of a flat plate, a plurality of coupling holes are formed to be integrally coupled to the ground or bottom surface using a coupling bolt and a nut.

The lower plate 30 is disposed at a position spaced apart from the upper plate 20, and a pair of support modules 40, a pair of core modules 50, and a preventive cover 60 are disposed therebetween. .

The pair of support modules 40 are coupled to the upper plate 20 and the lower plate 30, respectively, and are arranged to be symmetrical to each other, and a pair of core modules 50 to be described later are arranged one by one.

The pair of support modules 40 has an accommodating space 411 in which the core module 50 is disposed, and a through hole 412 for coupling with the upper plate 20 or the lower plate 30 . ) includes a support body 41 formed therein, and a cover 42 coupled to the support body 41 .

The support body 41 is integrally coupled to the upper plate 20 or the lower plate 30 through a through hole 412 through a fixing bolt and a nut as shown in the drawing.

And an accommodation space 411 in which the core module 50 is disposed is formed in the support body 41. The accommodation space 411 includes a lower end 413 into which the core module is introduced, and the lower end 413. and an upper end portion 414 formed with a height difference from the lower end portion 413, an annular locking jaw 415 protruding toward the upper end portion 414 is formed on the edge of the lower end portion 413, and the upper end portion 414 is the lower end portion It is formed to have a relatively wide diameter compared to (413), an annular protruding step 416 protruding outwardly on the edge is formed.

The core body 51 constituting the core module 50 is inserted into the lower end 413 so that the core body 51 can move in the horizontal direction by vibration transmitted from the horizontal direction in the retracted state. It is formed to have a relatively large diameter compared to the diameter of the core body (51).

And an annular locking jaw 415 protruding from the edge of the lower end 413 toward the upper end 414 is formed, and the locking jaw 415 is the pressure transmitted by the retracted core body 51 in the horizontal direction. When moved in the horizontal direction by the abutment of the outer peripheral surface of the core body 51 to support it, thereby preventing it from being separated to the outside.

The upper end 414 is connected to the opening of the lower end 413 and is formed to have a relatively large diameter compared to the diameter of the lower end 413 , and an elastic body 43 for offsetting a horizontal external force to be described later is disposed.

And an annular protruding step 416 protruding to the outside is formed on the edge of the upper end 414, and the introduced elastic body 43 for offsetting the horizontal external force is compressed and restored by the core body 51. prevent it from becoming

The elastic body 43 for offsetting the horizontal external force is disposed on the upper end 414 to surround the outer circumferential surface of the introduced core module 50, and the core body 51 moves in the horizontal direction by vibration transmitted in the horizontal direction. It relieves the transmitted vibration as it is compressed or restored by the

Here, the elastic body 43 for offsetting the horizontal external force has an outside ring 431 formed in a circular ring shape and disposed in contact with the inner wall of the accommodation space 411 , the outside ring 431 and the core module It is disposed between the 50, and a plurality of radially disposed inside rings 432 one surface abuts against the core module 50 and elastically supports them.

The outside ring 431 is formed in a circular ring shape and is disposed to abut against the inner wall of the upper end 414 of the accommodation space 411, and the inside ring 432 is an arc convexly protruding to one side. It is made of a (弧) shape and is disposed so that one protruding side is in contact with the outer circumferential surface of the core body (51). In addition, a plurality of the outside rings 431 are disposed at a distance from each other along the inner circumferential surface of the outside ring 431 to alleviate the vibration in the horizontal direction transmitted to the core body 51 .

Here, a plurality of the inside rings 432 are arranged radially based on the vertical center line of the upper end portion 414, and each of the longitudinal ends is formed as an interconnected integral body to prevent the inside ring 432 from being separated to the outside during compression and restoration.

In another embodiment, the inside ring 432 is disposed on the inner wall of the outside ring 431 and may have a wave shape in which protrusions protruding toward the core body 51 at regular intervals are formed.

The cover 42 is coupled to the support body 41 through a coupling bolt and a nut, and prevents the core module 50 disposed on the support body 41 from being separated, and at the same time supports the load pressure transmitted from above.

To this end, a pair of the covers 42 are disposed symmetrically to each other, and a penetrating portion penetrating vertically is formed in each, and the coupling portion 513 of the core module 50 to be described later is exposed through the through portion and then coupled to each other. In this case, the diameter of the through portion is formed to have a relatively small diameter compared to the diameter of the support body so that the support body 41 disposed in the receiving space 411 does not escape to the outside through the through portion. (See FIG. 6 )

The pair of core modules 50 are disposed on the pair of support modules 40, respectively, and then coupled to each other to support the main body 10 from below and at the same time to relieve vibration transmitted from above or below. , a support portion 511 disposed on the pair of support modules 40, each provided with an inlet space 512 concave in each, and a coupling portion 513 that is formed in the support portion 511 and can be coupled to each other. It includes a pair of core bodies 51 including, and an elastic body 52 for supporting a vertical external force that is disposed in the inlet space 512 and supports vibration transmitted in the vertical direction.

The pair of core bodies 51 are respectively disposed on the pair of support modules 40, and an inlet space 512 formed to be concave in each is formed so that the elastic body 52 for supporting the vertical external force is disposed, and the external A pair is coupled to each other through the coupling portion 513 protruding into the.

Here, the pair of core body 51 includes a support part 511 in which the inlet space 512 is formed, and the coupling part 513 protrudes outward from the support part 511, and any one is coupled to the male and female form. It is made in the form of a protrusion in which a helix for coupling is formed on the outer circumferential surface, and the other one is in the form of a concave groove in which a helix for coupling is formed on the inner circumferential surface so that the protrusion is coupled.

The pair of core bodies 51 are respectively disposed in the lower end 413 of the receiving space 411 of the upper extremity support module 40, and the coupling part 513 is connected to the cover 42 side of the support module 40. They are placed facing each other and then interlocked.

The elastic body 52 for supporting the vertical external force is for mitigating the vibration transmitted in the horizontal direction, and one end is disposed to abut against the lower end of the support module 40 and the other end is an inlet space of the core body 51 ( 512) to elastically support the core body 51 by being placed in contact with the inner wall forming the.

At this time, the elastic body 52 for supporting the vertical external force is made of a wave spring, which combines the advantages of the existing coil spring and the leaf spring and compensates for the disadvantages. Since it can be formed to have a height of only 50% compared to that of the coil spring, it is possible to provide a high compressive force in a small space.

In particular, the wave spring can support the high pressure transmitted in the vertical direction because it has a compressive force that is 3 to 5 times higher than that of the conventional coil spring when it is made at the same height.

In the present invention, it is possible to minimize the volume and height of the configuration supporting the main body 10 from below by configuring the elastic body 52 for supporting the vertical external force for alleviating the vibration transmitted in the vertical direction as a wave spring, and through this The position of the main body can be placed at the lowest possible position, and when the same vibration is transmitted in the vertical direction, the main body arranged at a lower position receives relatively low pressure compared to the main body arranged at a higher position. It is possible to minimize breakage and separation of devices and contacts disposed inside the body.

The pair of core modules 50 made as described above is transmitted to the main body by mitigating vibration transmitted in the vertical direction through the elastic body 52 for supporting the vertical external force in a state coupled to each other through the coupling part 513. Vibration is minimized to minimize damage to the devices arranged inside the main body and the contact point where the devices and cables are connected.

At this time, by configuring the elastic body 52 for supporting the vertical external force as a wave spring having a higher compressive force than a general coil spring, it is possible to provide a high compressive force while lowering the height and reducing the volume.

The prevention cover 60 is disposed between the upper plate 20 and the lower plate 30 to surround the support module 40 and the core module 50 to prevent foreign substances and moisture from entering from the outside. It blocks and is made of a material with elastic restoring force so that when vibration occurs in the vertical direction, it is compressed and restored to alleviate it.

This prevention cover 60 is made of a hollow tubular shape and is made of a soft material having its own elastic restoring force, such as rubber, silicone, or urethane, and a paint for waterproofing or antistatic prevention is applied or a coating layer may be formed. .

The present invention made as described above is coupled to each other in a state in which the pair of core modules 50 are vertically disposed, and the elastic body 52 for supporting vertical external force disposed on the coupled pair of core modules 50. ) to alleviate the vibration transmitted in the vertical direction, and to alleviate the vibration transmitted in the horizontal direction through the horizontal external force offset elastic body 43 disposed to surround the pair of core modules 50, the main body 10 can be safely protected.

Through the present invention, the function of the conventional earthquake-resistant device is limited to mitigating vibration in the vertical direction, or a configuration for mitigating vibration in the vertical and horizontal directions is separately configured, thereby increasing the manufacturing cost and inconvenient and cost of maintenance The device to prevent the rise and especially to mitigate the vibration in the vertical direction is composed of a general coil spring, so the height of the seismic device itself increases and the volume increase can be reduced. There is no advantage.

That is, the present invention has the advantage of reducing the height and reducing the volume by alleviating vibration in the vertical direction by using a wave spring having a compressive force 3 to 5 times that of a coil spring when it is formed at the same height.

In addition, the present invention mitigates vibration transmitted in the horizontal direction while a pair of core modules move simultaneously in the horizontal direction, in which case the coupled pair of core modules is configured to move in the horizontal direction at the same time, and in the horizontal and vertical directions When vibration is transmitted at the same time, the pair of core modules move in the horizontal direction at the same time to relieve the vibration through the elastic body for offsetting the horizontal external force, and at this time, any one of the pair of support modules on which the pair of core modules are disposed is horizontal The other one moves in conjunction with the core module by the vibration transmitted in the direction, and the other one that does not move is placed in a position where the position is not changed, and at the same time, the elastic body for offsetting the horizontal external force is compressed and restored to relieve the vibration transmitted in the horizontal direction. do.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

1: Switchgear with seismic device
10: main body
20: upper plate
30: lower plate
40: support module
41: support body 42: cover
43: elastic body for offsetting horizontal external force
50: core module
51: core body 52: elastic body for supporting vertical external force
60: prevention cover

Claims (5)

For the monitoring, control and protection of the power system, electrical devices and their contacts are disposed inside the main body 10;
an upper plate 20 coupled to a bottom surface of the main body 10;
a lower plate 30 disposed at a vertically spaced position from the upper plate 20;
a pair of support modules 40 coupled to the upper plate 20 and the lower plate 30, respectively, arranged to be symmetrical to each other;
a pair of core modules 50 respectively coupled to the pair of support modules 40 to be detachably coupled to each other;
A prevention cover ( 60); including;
The pair of support modules 40,
A support body 41 in which an accommodation space 411 in which the core module 50 is disposed is formed and a through hole 412 for coupling with the upper plate 20 or the lower plate 30 is formed;
and a cover 42 coupled to the support body 41,
In the receiving space 411,
An elastic body 43 for offsetting a horizontal external force for protecting the core module 50 from vibration and shock transmitted from a horizontal direction is disposed to surround the outer circumferential surface of the retracted core module 50,
The pair of core modules 50,
A support portion 511 disposed on the pair of support modules 40, each provided with an inlet space 512 concave in each, and a coupling portion 513 formed in the support portion 511 and capable of being coupled to each other. A pair of core bodies (51),
and an elastic body 52 for supporting a vertical external force that is disposed in the inlet space 512 and supports vibration transmitted in the vertical direction,
The vertical external force supporting elastic body (52) is a switchgear equipped with a seismic device, characterized in that made of a multi-layered coil wave spring. The method according to claim 1, The horizontal external force offset elastic body (43),
an outside ring 431 formed in a circular ring shape and disposed in contact with the inner wall of the accommodation space 411;
It is disposed between the outside ring 431 and the core module 50, and a plurality of radially disposed inside rings 432 are provided so that one surface abuts against the core module 50 and elastically supports them. A switchboard equipped with an earthquake-resistant device. delete delete The method according to claim 1 or 2, The accommodation space (411),
and a lower end 413 into which the core module is introduced, and an upper end 414 formed with a height difference from the lower end 413,
An annular locking jaw 415 protruding toward the upper end 414 is formed on the edge of the lower end 413,
The upper end (414) is formed to have a relatively wider diameter than the lower end (413), and an annular protruding step (416) protruding to the outside is formed on the rim.

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