KR102055088B1 - switchgear with seismic isolation apparatus - Google Patents

Abstract

The present invention is a switchgear having a lower panel; And a seismic isolation device installed between the lower panel and the bottom to offset and absorb vibrations caused by an earthquake to protect the switchgear. The seismic isolation device is in close contact with the lower surface of the lower panel and is formed in a circular shape. A member, a lower plate member spaced apart in parallel to a lower portion of the upper plate member and closely contacted with the bottom and formed in a circular shape, a fixing member for fixing the lower plate member to the bottom, and a space between the upper plate member and the lower plate member Is connected up and down to be provided, a plurality of radially arranged with a predetermined interval and one end and the other end of the seismic isolation wire is fixed between the outer edge of the upper plate member and the lower plate member, respectively, and the upper plate member and the lower A concave base isolation penetrating through the panels in turn, the lower part of which is located in the separation space and the lower surface center having a first curvature. A seismic isolation guide member consisting of a guide surface, a seismic ball support protruding upwardly perpendicularly to the upper surface of the lower plate member, and a ball receiving groove having a flat bottom surface at an upper center thereof, and an outer circumferential surface accommodated in the ball receiving groove Technically, a switchgear equipped with a seismic isolation device having a second curvature having a curvature larger than a curvature and a first vibration absorbing member provided in the seismic isolation guide member is provided.

Description

Switchgear with seismic isolation device

The present invention relates to a switchgear equipped with a seismic isolator is installed in the lower portion of the switchgear to protect the switchgear by offsetting the seismic energy transmitted to the switchgear through the floor when an earthquake occurs.

In buildings or factories with high power consumption equipment or low power consumption, but many power consumption equipment, 22,900V high-voltage power is supplied from substations and converted to 220V or 380V commercial power.

Power facilities provided in buildings and factories include a switchgear that converts high voltage power into commercial power and converts it into commercial power.

The switchgear has an enclosure shape with a door that can be opened and closed on the front, and various switchgear attachment modules such as an inlet, an automatic section breaker, an arrester, a power fuse, a transformer, a transformer, a parking breaker, and a load breaker are installed inside. have.

On the other hand, the switchgear must supply commercial power at all times to ensure the operation of power consumption equipment and emergency operation of fire safety equipment. As the frequency of occurrence of large and small earthquakes increases due to climate and environmental changes, dustproof devices are installed in the switchgear to protect the power distribution module during an earthquake so as not to disrupt the supply of commercial power.

The conventional dustproof device for switchgear is a structure in which a dustproof rubber or an elastic member is installed between an upper plate fixed to a lower surface of a switchgear and a lower plate fixed to a floor, and absorbs vibration transmitted to the switchgear through the floor during an earthquake. It was intended to be.

However, as the anti-vibration rubber or the elastic member is installed vertically between the upper plate and the lower plate, the vibration transmitted in the vertical direction can be absorbed to some extent, but there is a structural limitation in that the vibration transmitted in the horizontal direction cannot be properly absorbed.

Therefore, it is necessary to develop a seismic isolator for the switchgear that can absorb and cancel both the vibration acting in the vertical direction and the vibration acting in the horizontal direction to safely protect the switchgear from an earthquake and to smoothly supply and supply power.

Republic of Korea Patent Publication No. 10-1427879, issued August 8, 2014. Republic of Korea Patent Publication No. 10-1561039, 2015.10.19. Republic of Korea Patent Publication No. 10-1614347, published on April 21, 2016.

The present invention was invented to solve the above problems, and absorbs and offsets the vibration transmitted in the vertical direction to the switchgear and the horizontal direction in the event of an earthquake, so as to safely protect the switchgear from the earthquake and smoothly supply and supply power. The purpose is to provide a switchgear equipped with a seismic isolator that can be made.

The object of the present invention is not limited to the above-mentioned object, and other objects which are not mentioned will be clearly understood from the following description.

The switchgear with a base isolation device according to the present invention for achieving the above object is a switchgear having a lower panel; And a seismic isolation device installed between the lower panel and the bottom to offset and absorb vibrations caused by an earthquake to protect the switchgear. The seismic isolation device is in close contact with the lower surface of the lower panel and is formed in a circular shape. A member, a lower plate member spaced apart in parallel to a lower portion of the upper plate member and closely contacted with the bottom and formed in a circular shape, a fixing member for fixing the lower plate member to the bottom, and a space between the upper plate member and the lower plate member Is connected up and down to be provided, a plurality of radially arranged with a predetermined interval and one end and the other end of the seismic isolation wire is fixed between the outer edge of the upper plate member and the lower plate member, respectively, and the upper plate member and the lower A concave base isolation penetrating through the panels in turn, the lower part of which is located in the separation space and the lower surface center having a first curvature. A seismic isolation guide member consisting of a guide surface, a seismic ball support protruding upwardly perpendicularly to the upper surface of the lower plate member, and a ball receiving groove having a flat bottom surface at an upper center thereof, and an outer circumferential surface accommodated in the ball receiving groove It characterized in that it comprises a surface isolation ball and a first vibration absorbing member provided in the surface isolation guide member having a second curvature relatively larger than the curvature.

The seismic isolator is characterized in that it comprises a plurality of plate springs to support the load of the switchgear acting on the seismic isolation ball is stacked in a plurality of upper and lower stages in the lower portion of the seismic isolation ball inside the ball receiving groove.

The base isolation guide member includes a through bolt penetrating the upper plate member and the lower panel in order; A fastening nut fastened to an upper end of the through bolt at an upper portion of the lower panel to tightly fix the upper plate member to a lower surface of the lower panel; And a seismic isolation guide block extending from the bottom of the through-bolt and having a relatively larger diameter than the diameter of the through-bolt, wherein the seismic isolation guide surface is recessed at the center of the lower surface thereof.

The first vibration absorbing member includes: a first anti-vibration rubber installed between the fastening nut and the lower panel on the through bolt; A second anti-vibration rubber installed between the upper plate member and the base isolation guide block on the through bolt; And a third anti-vibration rubber installed between the second anti-vibration rubber and the seismic isolation guide block on the through bolt and formed with a block accommodating groove recessed in the lower center to surround the seismic isolation guide block from the outside. do.

The fastening nut is integrally formed with an anti-loosening slot so as not to be loosened from the through-bolt, and the anti-loosening slot has an extension tube extending upwardly vertically along the upper periphery of the fastening nut, and cut in a horizontal direction on the upper side of the extension tube. The male thread of the through-bolt is inserted into the upper cut-out groove forcibly fitted, and the lower cut-out of the extension pipe is cut in parallel with the upper cut-out groove at intervals vertically and interleaved so that the male screw of the through-bolt is fitted. It is composed of a lower cutting groove which is inserted in the manner, between the fastening nut and the first anti-vibration rubber, the through bolt is loosened to prevent the fastening nut from being released from the through bolt by the material of the first anti-vibration rubber The prevention washer is characterized in that the installation.

The seismic isolator is provided between the lower panel and the upper plate member and a plurality of the second vibration absorbing member for radially disposed at a predetermined interval to absorb the vibration transmitted to the lower panel through the upper plate member and the lower plate member It further comprises.

The present invention by the above configuration can be expected the following effects.

The upper plate member and the lower plate member are connected with the base isolation wire, and the base plate guide member and the base plate ball are provided between the upper plate member and the lower plate member to offset the horizontal vibration by horizontally moving the lower plate member in the event of an earthquake to protect the switchboard safely. It is possible to safely support the switchboard by returning the lower plate member to its original position at the end of the earthquake.

The first vibration absorbing member including the first anti-vibration rubber, the second anti-vibration rubber, and the third anti-vibration rubber is provided on the seismic isolation guide member, and the second vibration absorption includes a fourth anti-vibration rubber between the lower panel and the upper plate member of the switchboard. The member is provided to effectively absorb the vibration transmitted in the vertical direction to the switchgear when an earthquake occurs to protect the switchgear safely.

1 is a perspective view showing a seismic isolator applied to the switchgear equipped with a seismic isolator according to a first embodiment of the present invention.
FIG. 2 is a plan view showing an isolation device applied to a switchgear equipped with a isolation device according to a first embodiment of the present invention.
3 is a perspective view showing a switchgear equipped with a base isolation device according to a first embodiment of the present invention.
4 is an enlarged cross-sectional view illustrating main parts of a switchgear equipped with a base isolation device according to a first embodiment of the present invention.
5 is an exploded cross-sectional view illustrating main parts of a switchgear equipped with a base isolation device according to a first embodiment of the present invention.
6 is an enlarged cross-sectional view illustrating main parts of a switchgear equipped with a base isolation device according to a second preferred embodiment of the present invention.

The present invention relates to a switchgear equipped with a seismic isolator installed in the lower portion of the switchgear to reduce the earthquake energy transmitted to the switchgear through the floor during the earthquake, to protect the switchgear and to smoothly supply and supply power.

In particular, the switchgear equipped with a seismic isolation device according to the present invention to absorb the vibration transmitted in the vertical direction to the switchgear when the earthquake occurs and to cancel the vibration transmitted in the horizontal direction to safely protect the switchgear from the earthquake to smoothly supply and supply power It is characteristic that can be.

Hereinafter, with reference to the accompanying drawings, a switchgear equipped with a base isolation device according to the first and second preferred embodiments of the present invention will be described in detail.

The switchgear equipped with the seismic isolation device according to the first embodiment of the present invention is installed between the switchgear E and the floor F on which the switchgear is placed to absorb vibration in the vertical direction when an earthquake occurs and vibration in the horizontal direction. As shown in FIG. 1, the switchboard E, the upper plate member 10, the lower plate member 20, the fixing member 30, the base isolation wire 40, and the base isolation guide member 50 are illustrated in FIG. 1. And it may be composed of a surface isolation ball support 60, a surface isolation ball 70, the dish spring 80 and the first vibration absorbing member (90).
First, the distribution panel E may be provided with a bottom panel (B).

Next, the upper plate member 10 is in close contact with the bottom surface of the bottom panel (B) of the switchgear (E) and has a disc shape.

The upper plate member 10 is composed of two so that one end of the base isolation wire 40 is pressed and fixed to the outer edge may be coupled up and down by a plurality of fastening bolts 11 with one end of the base isolation wire 40 therebetween. .

Next, the lower plate member 20 is spaced apart in parallel to the lower portion of the upper plate member 10 and has a disk shape corresponding to the upper plate member 10.

The lower plate member 20 is composed of two so that the other end of the base isolation wire 40 is pressed and fixed to the outer edge can be coupled up and down by a plurality of fastening bolts (not shown) between the other end of the base isolation wire 40. have.

Next, the fixing member 30 is fixed to the upper panel member 10 and the lower panel member 20 in close contact with the bottom panel (B) of the bottom and the switchgear (E), respectively.

The fixing member 30 is screwed to the end of the fixing bolt 31 penetrating the lower panel B upwards from the lower surface of the upper plate member 10 and the fixing bolt 31 penetrating the lower panel B. And a fixing nut 32 for tightly fixing the upper plate member 10 to the lower panel B, an anchor bolt 33 embedded in the bottom and penetrating the lower plate member 20 upward, and the lower plate member 20. Screwed to the end of the anchor bolt 31 passed through the lower plate member 20 may be composed of a fixing nut 34 for fixing in close contact with the floor.

Next, the base isolation wire 40 is connected to the upper plate member 10 and the lower plate member 20 so as to be flowable from side to side with spaced apart spaces up and down.

Base isolation wire 40 is composed of a plurality of radially arranged along the outer edge of the upper plate member 10 and the lower plate member 20 with a predetermined interval, one end and the other end of the upper plate member 10 and the lower plate member 20, respectively It can be pressed into the doctor.

The base isolation wire 40 may guide the bottom plate member 20 to be ground-moving in a horizontal direction within a predetermined radius from the bottom of the top plate member 10 together with the bottom when an earthquake occurs, and the bottom plate member 20 when the earthquake disappears. The return force can be exerted so as to return to the upper portion of the upper plate member 10 in its original position.

As the plurality of base isolation wires 40 are radially disposed, the base isolation wires 40 may guide the lower plate member 20 to perform base isolation motion in various directions on the horizontal line.

Next, the seismic isolation guide member 50 fixes the upper plate member 10 to the lower panel B of the water distribution panel E, and the seismic isolation guide in the spaced space provided between the upper plate member 10 and the lower plate member 20. It provides face 53a.

The base isolation guide member 50 may include a through bolt 51, a fastening nut 52, and a base isolation guide block 53.

The through bolt 51 penetrates the upper plate member 10 and the lower panel B of the switchboard E in order.

The fastening nut 52 is fastened to the upper end of the through-bolt 51 from the upper portion of the lower panel (B) to fix the upper plate member 10 in close contact with the lower surface of the lower panel (B).

As shown in FIGS. 1 and 4, the fastening nut 52 may be integrally formed with an anti-loosening slot 52a so as not to be released from the through bolt 51 when vibration is generated.

The anti-loosening slot 52a is vertically extended upwardly along the upper periphery of the fastening nut 52 as shown in FIG. 5 and parallel to the upper and lower sides of the extension pipe 521a, respectively. The upper cutout groove 522a and the lower cutout groove 523a may be configured to be horizontally cut.

When the fastening nut 52 is fastened to the through bolt 51, the male thread of the through bolt 51 is inserted into the upper notch groove 522a and the lower notch groove 523a while being inserted into the upper notch groove 522a. The lower cutout groove 523a is forcibly expanded, and in the extension pipe 521a, the fastening nut 52 is passed through the bolt 51 while generating a return force to reduce the upper cutout groove 522a and the lower cutout groove 523a. ) Will not be solved.

The seismic isolation guide block 53 is formed at the lower end of the through bolt 51 and has a diameter larger than that of the through bolt 51 and has a concave isolation guide surface 53a having a first curvature at the center of the lower surface. This is formed recessed.

Next, the base isolation ball support 60 is provided on the upper surface of the lower plate member 20 to support the base isolation ball 70 vertically.

The base isolation ball support 60 may protrude upward vertically to the upper surface of the lower plate member 20 so that the ball receiving groove 61 is formed in the upper center thereof.

Next, the seismic isolation ball 70 has a second curvature that is accommodated in the ball receiving groove 61 of the seismic isolation ball support 60 and the outer circumferential surface of the seismic isolation guide block 53 is larger than the seismic isolation guide surface 53a of the seismic isolation guide block 53. It is in close contact with the base isolation guide surface 53a.

When the seismic isolation ball 70 is in a state of rolling in close contact with the seismic isolation guide surface 53a during an earthquake, the lower plate member 20 may be seismically moved in a horizontal direction within a predetermined radius from the lower portion of the upper plate member 10.

The seismic isolation ball 70 may return the lower plate member 20 to its original position while rolling a cloud so as to be located at the center of the seismic isolation guide surface 53a by the curvature when the earthquake disappears.

The bottom plate member 20 can be grounded in the horizontal direction from the bottom of the upper plate member 10 by the base isolation ball 70, the base isolation guide member 50, and the base isolation wire 40. It can effectively cancel the vibration.

Next, the dish spring 80 is installed on the bottom surface of the ball receiving groove 61 of the base isolation ball support 60 to support the load of the switchboard (E) applied to the base isolation ball (70).

The plate spring 80 may be stacked in a plurality of top and bottom multi-stage according to the load of the switchboard (E) acting on the surface isolation ball 70, it may be stacked in a series combination or a parallel combination or a series-parallel combination.

As the plate spring 80 is installed on the bottom surface of the ball receiving groove 61, when the ball receiving groove 61 is processed, the bottom surface may not be processed into a concave curved shape corresponding to the base isolation ball 70. Can be.

Finally, the first vibration absorbing member 90 is provided in the surface isolation guide member 50 through the lower plate member 20, the surface isolation ball 70, the surface isolation guide member 50 and the upper plate member 10 during an earthquake. The vibration in the vertical direction transmitted to the lower panel (B) of the switchgear (E) can be absorbed.

The first vibration absorbing member 90 may include a first anti-vibration rubber 91, a second anti-vibration rubber 92, and a third anti-vibration rubber 93.

The first anti-vibration rubber 91 is a through-hole 51 through which a through bolt 51 penetrates at a center thereof so as to be installed between the fastening nut 52 and the lower panel B on the through bolt 51 of the seismic isolation guide member 50. A 91a is formed and formed in a disc shape or a square plate shape having a predetermined thickness, and the dustproof grooves 91b are recessed in the direction in which the dustproof grooves 91b cross each other on the upper and lower surfaces, respectively.

Between the first anti-vibration rubber (91) and the fastening nut (52) in accordance with the material properties of the first anti-vibration rubber (91) in order to prevent the fastening nut (52) from loosening from the through bolt (51) It may be further installed on the outside of the through bolt (51).

The second anti-vibration rubber 92 has a through hole 92a through which the through bolt 51 penetrates at the center thereof so as to be installed between the upper plate member 10 and the base isolation guide block 53 on the through bolt 51. It is formed in a disc shape or a square plate shape of a predetermined thickness, and is formed in the direction in which the dustproof grooves 92b cross each other on the upper and lower surfaces, respectively.

The third anti-vibration rubber 93 has a through hole 93a through which the through bolt 51 penetrates at the center thereof so as to be installed between the second anti-vibration rubber 92 and the base isolation guide block 53 on the through bolt 51. A block accommodating groove 93b is formed in the lower center so as to surround the base isolation guide block 53 from the outside.

The third anti-vibration rubber 93, the second anti-vibration rubber 92, and the first anti-vibration rubber 91 absorb vibrations in the vertical direction transmitted from the bottom to the lower panel B of the switchgear E in the event of an earthquake. By preventing the electrical contact caused by the vibration to prevent the occurrence of the arc can secure the switchgear (E).

A switchgear equipped with a seismic isolator according to a second embodiment of the present invention includes a switchgear E, an upper plate member 10, a lower plate member 20, a fixing member 30, a seismic isolation wire 40, and a seismic isolation guide member ( 50 and the side isolation ball support 60, the side isolation ball 70, the dish spring 80 and the first vibration absorbing member 90 and the second vibration absorbing member 100 may be composed.

That is, the switchgear equipped with the base isolation device according to the second preferred embodiment of the present invention further includes a second vibration absorbing member 100 in the configuration included in the first embodiment.

The second vibration absorbing member 100 is installed on the outer side of the through bolt 51 between the lower panel B and the upper plate member 10 so that the lower panel (10) through the upper plate member 10 and the lower plate member 20 It can absorb the vibration transmitted to B).

The second vibration absorbing member 100 may have a predetermined thickness and may include a fourth anti-vibration rubber 101 having a through hole through which the through bolt 51 penetrates in the center thereof. The fourth anti-vibration rubber 101 is recessed in the direction in which the anti-vibration grooves 101a cross each other on the upper and lower surfaces, respectively.

The fourth anti-vibration rubber 101 is a vibration control in the vertical direction transmitted from the floor to the lower panel (B) of the distribution panel (E) when the earthquake occurs, the third anti-vibration rubber 93, the second anti-vibration rubber 92 and the first dust It is absorbed together with the rubber 91 can safely protect the switchboard (E).

The above embodiments are merely exemplary, and those having ordinary skill in the art may have other embodiments modified in various ways.

Therefore, the true technical protection scope of the present invention should include not only the above embodiment but also various other embodiments modified by the technical spirit of the invention described in the claims below.

10: top member 11: fastening bolt
20: lower plate member
30: fixing member 31: fixing bolt
32: fixing nut 33: anchor bolt
34: fixing nut
40: base isolation wire
50: seismic isolation guide member 51: through bolt
52: Tightening nut 52a: Loosening prevention slot
521a: extension pipe 522a: upper cutout groove
523a: lower cutout groove 53: isolation guide block
53a: Isolation Guide Surface 54: Release Lock Washer
60: base isolation ball support 61: ball receiving groove
70: cotton ball
80: dish spring
90: first vibration absorbing member 91: first vibration-proof rubber
91a: through hole 91b: base isolation groove
92: second anti-vibration rubber 92a: through hole
92b: isolation groove 93: third anti-vibration rubber
93a: through hole 93b: block receiving groove
100: second vibration absorbing member 101: fourth vibration-proof rubber
101a: Dustproof Home
E: Switchgear B: Lower panel

Claims (6)

A switchgear having a lower panel, and a seismic isolation device installed between the lower panel and the floor to offset and absorb vibration caused by an earthquake, and to protect the switchgear.
The isolation device is
An upper plate member which is in close contact with the lower surface of the lower panel and is formed in a circular shape, a lower plate member which is spaced apart in parallel to the lower portion of the upper plate member and is in close contact with the bottom and is formed in a circle corresponding to the upper plate member, and the lower plate member. Fixing member for fixing to the floor, the upper plate member and the lower plate member is connected up and down so that the space is provided, a plurality of radially arranged at a predetermined interval, one end and the other end of the upper plate member and the lower plate member, respectively A seismic isolation wire is crimped and fixed between the outer edges of the upper surface, and an upper portion penetrates the upper plate member and the lower panel in turn, and a lower portion is positioned on the separation space, and the lower surface center has a concave seismic guide surface having a first curvature. The base isolation guide member and the upper surface of the lower plate member protrude upwardly vertically and the bottom surface of the upper center is flat. A first vibration absorber provided with an isolating ball support in which one ball receiving groove is recessed, a second ball curvature accommodated in the ball receiving groove, and an outer circumferential surface thereof has a second curvature that is relatively larger than the first curvature. A member and a plurality of plate springs which are stacked in a plurality of upper and lower stages in the lower portion of the surface isolation ball in the inside of the ball receiving groove to support the load of the switchboard acting on the surface isolation ball,
The base isolation guide member is
A through bolt penetrating the upper plate member and the lower panel in order, a fastening nut fastened to an upper end of the through bolt at an upper portion of the lower panel, and tightly fixing the upper plate member to the lower surface of the lower panel; It is formed in the bottom of the bolt is composed of a seismic isolation guide block having a diameter larger than the diameter of the through bolt and the seismic isolation guide surface is formed in the center of the lower surface,
The first vibration absorbing member
When the earthquake occurs, the fastening nut and the fastening nut on the through-bolt so as to absorb the vibration in the vertical direction in order to prevent the electrical contact caused by the vibration to prevent the occurrence of arc to protect the switchgear safely. A first anti-vibration rubber disposed between the lower panel, a second anti-vibration rubber installed between the upper plate member and the base isolation guide block on the through bolt, and the second anti-vibration rubber and the base isolation guide block on the through bolt. It is installed between the and is composed of a third anti-vibration rubber that is formed in the block receiving groove recessed in the lower center to surround the base isolation guide block from the outside,
The fastening nut
An anti-loosening slot is integrally formed so as not to be loosened from the through-bolt. The upper threaded groove of the male thread is inserted into the interference fitting method, and the upper threaded groove in the lower side of the extension pipe is cut apart to be parallel to the top and bottom at intervals up and down so that the male thread of the through bolt is inserted into the interference fit. Consists of a bottom cut groove,
The through bolt between the fastening nut and the first dustproof rubber
The switchgear provided with a seismic isolator characterized in that the anti-loosening washer is installed to prevent the fastening nut from being released from the through bolt by the material of the first anti-vibration rubber. delete delete delete delete The method of claim 1,
The isolation device is
A second vibration absorbing member is installed between the lower panel and the upper plate member, and a plurality of the plurality of radially disposed radially with a predetermined interval to absorb the vibration transmitted to the lower panel through the upper plate member and the lower plate member. Switchgear equipped with a base isolation device, characterized in that.

Images