KR102525874B1 - Switching board earthquake-proof apparatus having electrical protecting function - Google Patents

Abstract

The present invention relates to a switchboard earthquake-proofing device having an electrical protection function. The switchboard earthquake-proofing device comprises: a base; a frame; a stopper member; a bearing block; an earthquake-proof spring; a switchboard earthquake-proofing device; a fluid conductor; a fixed conductor; and a sensing device. Therefore, the switchboard earthquake-proofing device of the present invention can absorb vibration or shock.

Description

Seismic device for switchgear with electrical protection {SWITCHING BOARD EARTHQUAKE-PROOF APPARATUS HAVING ELECTRICAL PROTECTING FUNCTION}

The present invention relates to an earthquake-proof device for a switchgear having an electrical protection function.

More specifically, the present invention relates to a technology capable of absorbing or buffering seismic waves so that a switchgear does not collapse, and safely protecting power supply devices and peripheral components thereof in a switchgear from vibrations or impacts caused by crustal movements.

In the present invention, a plate spring is also configured to absorb force acting vertically due to vibration or impact.

In general, switchgear equipment is a power supply device that converts extra-high voltage into low voltage and supplies necessary power to apartments, buildings, schools, factories, ports, and the like.

Most switchgear facilities include transformers, optimal operation controllers for these transformers, circuit breakers with power supply and cutoff functions, switchgear, and power monitoring controllers. , It is manufactured in the form of a steel structure enclosure to block the inflow of external moisture or foreign substances and to facilitate installation.

In particular, the power monitoring controller installed inside the switchgear senses values such as current, voltage, temperature, etc. of the power system and provides various information such as operating temperature, load factor, phase loss, power factor, harmonic factor, and unbalance factor of the power system and high-voltage transformer. It has a function of extracting , informs the administrator of this information through the LCD display mounted on the power monitoring controller, and transmits this information to a remote management system through the communication interface device.

In the switchgear as described above, when an earthquake occurs, a built-in power supply device is damaged due to vibration and shock, and thus a fatal problem such as interruption of power supply or occurrence of a short circuit may occur.

In order to effectively cope with the above problems, Korean Patent Registration No. 10-1418247 (seismic device for switchgear), Korean Patent No. 10-1377110 (seismic device for switchgear), and Korean Patent No. 10-1091183 (seismic device for switchgear) Although various seismic devices for switchgear are known, such as Korean Patent Registration No. 10-1518810 (a switchboard equipped with an earthquake-resistant shock absorber), various seismic devices for switchboards known as above are seismic waves composed of P waves and S waves. Insufficiency in effectively protecting the switchgear from the invention led to the creation of the present invention, and it has remarkable achievements, so it is proposed.

Republic of Korea Patent Registration No. 10-1418247 (seismic device for switchgear) Republic of Korea Patent No. 10-1377110 (seismic device for switchgear) Republic of Korea Patent Registration No. 10-1091183 (seismic device for switchgear) Republic of Korea Patent No. 10-1518810 (A switchboard equipped with an earthquake-resistant shock absorber)

The present invention provides a switchgear anti-seismic device having an electrical protection function, capable of absorbing or buffering seismic waves so that the switchgear does not collapse, and safely protecting power supply equipment and its peripheral parts in the switchgear from vibration or shock caused by crustal movement. Its purpose is to provide

Another object of the present invention is to provide a switchgear anti-seismic device having an electrical protection function in which a plate spring is integrally formed with a bearing block and an anti-seismic spring to absorb force acting vertically due to vibration or impact.

The technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

To achieve the above object, the switchboard earthquake-resistant device having an electrical protection function of the present invention

A base fixed to the lower surface of the switchgear with a predetermined thickness;

A frame surrounding the circumference of the base to be spaced apart from the outer wall of the base at a predetermined distance, and having a locking jaw in which an upper edge is bent inward;

A stopper member formed on an outer wall of the base to be spaced apart from the frame so that the base does not escape from the locking jaw;

a bearing block coupled between an inner bottom surface of the frame and the base, and having ball bearings coupled to an upper surface such that the base moves in a horizontal direction;

an earthquake-resistant spring having one end fixed to each inner surface of the frame and the other end positioned on an outer wall of the base to elastically support the base; and

A plate spring integrally formed with the bearing block and the earthquake-resistant spring to buffer a force acting vertically; A switchboard earthquake-proof device composed of; and

a floating conductor freely flowing forward, backward, left, and right according to the movement of the switchgear so that the stopper contacts the inner wall of the earthquake-proof device and generates an electrical switching signal;

a fixed conductor spaced apart from the fluid conductor by a predetermined distance to generate an electrical switching signal in contact with the fluid conductor; and

A sensing device comprising a terminal block for transmitting an electrical switching signal generated from the floating conductor and the fixed conductor to a control unit;

A distance at which the floating conductor moves to contact the stationary conductor is the same as a distance at which the stopper moves to contact an inner wall of the earthquake-proof device.

In the present invention, it is characterized in that the length of the stopper member and the stopper member are set so that the flow of the stopper member is prevented by the stopper member and the contact with the inner wall of the earthquake-proof device is not hindered.

In the present invention, electrical switching applies power to a cut-off device that cuts off power to the switchboard so that power to the switchboard is cut off, and a predetermined warning sound or warning display is output so that the manager can easily check the floating state of the switchboard. It is characterized by doing.

In the present invention, the sensing device is characterized in that it is constructed in a cylindrical case in which a certain space is formed, and the floating conductor and the fixed conductor are connected to a terminal block (connection unit), respectively.

In the present invention, it is characterized in that the separation distance between the floating conductor and the fixed conductor is set such that the floating conductor contacts the fixed conductor even when the stopper is inverted at a certain angle without contacting the inner wall of the earthquake-proof device.

In the present invention, the plate spring is characterized in that it is composed of a size that can cover the size of the bearing block and the earthquake-resistant spring.

According to the seismic device of the switchgear with electrical protection function of the present invention, when vibration or shock is transmitted to the switchgear due to crustal movement, the base on which the switchgear is mounted moves by the ball bearing in the traveling direction of the seismic wave and at the same time opposes the moving direction of the base. Vibration or shock can be absorbed by the compression action of the seismic spring, and the switchgear can be prevented from collapsing because the stopper member does not fall out of the locking jaw.

In addition, it is strong in safety by automatically operating an electrical protection device when the flow or conduction of the switchgear is severe.

In addition, since the bearing block and the earthquake-resistant spring are integrated with the leaf spring, it is possible to absorb force acting vertically due to vibration or impact.

Other effects will become apparent to those skilled in the art from the description below.

1 is a perspective view showing an installation state of a plurality of switchboards according to a first embodiment of the present invention;
2 is a perspective view illustrating an earthquake-resistant device according to a first embodiment of the present invention;
3 is a plan sectional view of the earthquake-resistant device shown in FIG. 2;
FIG. 4 is a cross-sectional view of main parts illustrating a coupled state between the earthquake-resistant device and switchgear shown in FIG. 2;
5 is a partially cut-away cross-sectional view illustrating a device for mutually binding switchgear to which an earthquake-resistant device is installed according to a first embodiment of the present invention.
6 and 7 are a longitudinal cross-sectional view and a right cross-sectional view of the switchgear binding device shown in FIG.
8 is a cross-sectional view of main parts of an electrical protection device according to a second embodiment of the present invention.
9 is a detailed configuration diagram of FIG. 8;
Figure 10 is a bb line cross-sectional view of Figure 9;
11 is an operation diagram of an electrical protection device according to a second embodiment of the present invention.
12 is a circuit diagram of an electrical protection device according to a second embodiment of the present invention.
13 is a configuration diagram in which a leaf spring is added to buffer a force acting vertically as a third embodiment of the present invention.
Fig. 14 is a plan view of Fig. 13;
15 is a view showing a state in which a seismic device composed of leaf springs is installed in a switchgear as a third embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention.

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 the present invention belongs.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a switchboard earthquake-proof device having an electrical protection function proposed in the present invention will be described in detail with reference to the accompanying drawings.

[First Embodiment]

1 is a perspective view illustrating an installation state of a plurality of switchboards according to a first embodiment of the present invention, and FIG. 2 is a perspective view illustrating an earthquake-resistant device according to a first embodiment of the present invention. FIG. 3 is a planar cross-sectional view of the earthquake-resistant device shown in FIG. 2 .

As shown in FIG. 1, the earthquake resistant device 200 for the switchgear 100 of the present invention is installed on the lower side of the switchgear 100, and the switchgear 100 is mounted on the base 110 connected to the earthquake resistant device 200. and fixed

The base 110 has a predetermined thickness and is firmly fixed to the lower surface of the switchboard 100 by a known fastening means such as welding or bolts (not shown).

The base 110 may be employed in a rectangular or cylindrical shape according to the shape of the switchboard 100 and may be placed inside the frame 203. In the present invention, the drawings (see FIGS. 1 to 3) show the Although the shape is shown as a rectangle, it is clear in advance that this is not a limited meaning.

The earthquake-resistant device 200 includes a support device for supporting the base 110 so that it does not fall down, and a shock absorber capable of absorbing vibration or impact of seismic waves at the same time.

First, the shock absorber will be described.

As shown in FIG. 3, the shock absorbing device surrounds the circumference of the base 110 to be spaced apart from the outer wall of the base 110 by a predetermined distance and includes a locking jaw 201 bent toward the base 110. A frame 203 having a ball bearing 212 supporting the bottom surface of the base 110 between the inner bottom surface of the frame 203 and the base 110 so that the base 110 can flow in the horizontal direction. ), and one end is fixed to the inner wall of the frame 203 so as to be symmetrical to each inner surface in the frame 203, and the other end elastically supports the outer wall of the base 110. It is configured to include a seismic spring that does.

As shown in FIGS. 2 and 3, the bearing block 211 is coupled so that dozens of balls can freely rotate on a flat plane, and a plurality of bearing blocks are installed on the bottom surface of the base 110 at regular intervals. Or it can be installed on the entire base (110).

Since the base 110 is installed to move from the frame as indicated by reference numeral “g” in FIG. 4 , the base 110 can be moved in a horizontal direction by the ball bearing 212 .

The support device is for supporting the switchboard 100 so that it does not fall down while limiting the range of horizontal movement of the switchboard 100, and as an example of its adoption, as shown in FIG. It can be implemented by attaching a stopper member 111 having a length that does not come out between the jaws 201 and does not reach the inner wall of the frame 203.

Since the stopper member 111 is in contact with the surface of the locking jaw 201, the base can move in the horizontal direction, but cannot escape above the locking jaw 201. Therefore, the base is not separated from the frame.

Since the stopper member 111 is attached to the outer wall of the base 110, when the base 110 moves horizontally by the seismic waves as described above, when the stopper member 111 comes into contact with the inner wall of the frame 203, the base (110) That is, the range of movement of the switchgear 100 can be limited, and since the stopper member 111 cannot escape over the hook 201, the switchgear 100 can be prevented from tilting or falling down.

The hooking jaw 201 does not necessarily need to be provided on the edge of the frame 203, but providing the hooking jaw 201 on the outermost side of the frame is more effective in preventing the switchgear 100 from collapsing or tilting.

On the other hand, since the earthquake-resistant device 200 is mounted on the switchgear 100 in a 1:1 ratio, as shown in FIG. 5, when a plurality of switchboards 100 are installed intensively, Adjacent switchboards can be firmly bound to each other through the binding device 300 .

As an example of adoption of the binding device 300, as shown in FIGS. 6 and 7, a rigid member 301 having a predetermined length is attached to the inner wall of the switchboard enclosure 101, respectively, and both rigid members 301 are bolted It can be implemented by concluding with (302).

In this way, even if the switchgear 100 moves horizontally, since each switchgear moves simultaneously, the floating posture of the switchgear can be further stabilized, and it is possible to reliably prevent a specific switchgear from shaking or falling over.

Here, the shape of the rigid member 301 may adopt various shapes other than the shape shown in the drawings.

As described above, in the present invention, when vibration or shock caused by crustal movement is transmitted to the switchgear 100, the base 110 moves in the horizontal direction by the ball bearing 212 to primarily absorb vibration, and the base Vibration or impact applied to the switchgear 100 by the compression phenomenon of the earthquake-resistant spring opposing the flow direction of the 110 can be absorbed or buffered, and the switchgear 100 Since it can be fixed so that it does not fall or tilt, power devices and peripheral components built in the switchgear 100 can be safely protected, so that power can be supplied stably.

[Second Embodiment]

8 is a cross-sectional view of main parts of an electrical protection device according to a second embodiment of the present invention. 9 is a detailed configuration diagram of FIG. 8 . FIG. 10 is a cross-sectional view taken along line b-b of FIG. 9 . 11 is an operation diagram of an electrical protection device according to a second embodiment of the present invention. 12 is a circuit configuration diagram of an electrical protection device according to a second embodiment of the present invention.

In the second embodiment, when the stopper member 111 contacts the inner wall of the earthquake-resistant device 200 with a predetermined strength while the switchgear 100 moves in the first embodiment, the floating conductor 570 is connected to the fixed conductor 580 When contacted, a switching signal is generated so that the power is cut off.

At this time, it is preferable that the distance between the end of the stopper member 111 on the inner wall of the earthquake-resistant device and the inner wall of the earthquake-resistant device 200 is the same as the distance between the flexible conductor 570 and the fixed conductor 580. In addition, the predetermined intensity is an intensity that provides a fluid power to the fluid conductor 570 so that the fluid conductor 570 can flow and contact the fixed conductor 580.

In addition, in the second embodiment, when the switchgear 100 is shaken severely and the stopper member 111 maintains a state where it does not deviate above the locking jaw 201 and the switchgear 100 is tilted at a predetermined angle, the floating conductor 570 is fixed By contacting the conductor 580, a switching signal is generated so that power is cut off.

In order for the stopper member 111 to come into contact with the inner wall of the earthquake-resistant device 200 when the switchgear 100 is moved or overturned, the stopper member 111 is prevented from flowing by the locking jaw 201, and the earthquake-resistant device 200 It is preferable to set the lengths of the stopper member 111 and the locking jaw 201 so that the contact with the inner wall is not hindered.

In the second embodiment, the sensing device 500 includes a cylindrical case 510 in which a certain space is formed, and a conductor made of a flexible material connected to the fluid conductor 570 so that the fluid conductor 570 can flow around a fixed axis. An upper fixing part 520 for fixing the line to the stopper member 111, a lower fixing part 530 for fixing the lower part of the case 510 to the inner bottom surface of the switchboard, and the floating conductor 570 are connected to the terminal block ( It consists of a cable 550 connected to the connection part) 540 and a cable 560 connected to the terminal block (connection part) 540 with the fixed conductor 580.

By configuring the line connecting the floating conductor 570 and the upper fixing part 520 with a conductor made of a flexible material, even if the switchgear is moved forward, backward, left, right, or tilted due to vibration caused by an earthquake, the flexible conductor 570 While moving freely, it can accurately generate an electrical signal by contacting the fixed conductor 580.

In the second embodiment configured as described above, if the switchgear 100 moves in an arbitrary direction and the stopper 111 contacts the inner wall of the earthquake-resistant device 200 with a predetermined strength, the floating conductor 570 also responds to the impact As they flow together, they come into contact with the fixed conductor 580.

In addition, even if the stopper 111 does not come into contact with the inner wall of the earthquake-resistant device 200, when the switchgear 100 is overturned at a certain angle, the floating conductor 570 is also overturned and comes into contact with the fixed conductor 580.

In this way, as the moving conductor 570 and the fixed conductor 580 come into contact, an electrical switching signal is generated, and electrical switching, as shown in FIG. Power to the switchgear is cut off, and a predetermined warning sound or warning display is output so that the manager can easily check the floating state of the switchgear.

[Third Embodiment]

13 is a configuration diagram in which a leaf spring is added to buffer a force acting vertically as a third embodiment of the present invention. Fig. 14 is a plan view of Fig. 13; 15 is a view showing a state in which a seismic device configured with a leaf spring is installed in a switchgear as a third embodiment of the present invention.

In the third embodiment, the plate spring 400 is formed on the bearing block 210 and the earthquake-resistant spring 202 in the first embodiment to buffer the force acting vertically.

As shown in FIGS. 13 and 14 , the plate spring 400 is configured from the bottom of the bearing block 210 to the earthquake-resistant spring 202 coupled to the frame 203 . The bearing block 210 and the earthquake-resistant spring 202 are positioned horizontally when viewed from above, and the plate spring 400 extends from the bottom of the bearing block 210 to the earthquake-resistant spring 202.

The plate spring 400 has a size capable of covering the lower surface of the bearing block 210 and the earthquake-resistant spring 202, and is composed of the bearing block 210 and the earthquake-resistant spring 202. That is, as shown in FIG. 14, it is formed in a rectangular shape covering the bearing block 210 and the earthquake-resistant spring 202 when viewed from above.

Therefore, when the switchgear is shaken by vibration caused by an earthquake or the like, the force applied perpendicularly to the bearing block 210 and the seismic spring 202 is transmitted by the entire lower surface of the bearing block 210 and the seismic spring 202. While buffering, the bearing block 210 and the earthquake-resistant spring 202 do not lean to either side, so that the vibration of the switchgear can be effectively absorbed, and at the same time, the bearing block 210 and the earthquake-resistant spring 202 can maintain their normal position do.

As shown in FIG. 15, eight bearing blocks 210 and earthquake-resistant springs 202 according to the third embodiment are configured, and plate springs 400 are individually configured, compared to the first embodiment. vibration can be absorbed more effectively.

In addition, by integrally configuring the bearing block 210 and the earthquake-resistant spring 202 by the plate spring 400, the manufacturing of the earthquake-resistant device can be efficiently performed.

In the above, with reference to the drawings, an embodiment for implementing an earthquake-resistant device for switchgear having an electrical protection function according to the present invention has been described.

As described above, the detailed description of the present invention has been described with respect to the preferred embodiments of the present invention, but this is the best embodiment of the present invention described by way of example, but does not limit the present invention. In addition, it is of course possible for anyone having ordinary knowledge in the technical field to which the present invention belongs to various modifications and imitations without departing from the scope of the technical idea of the present invention.

Therefore, the scope of the present invention is not limited to the above-described embodiments, but may be implemented in various forms of embodiments within the scope of the appended claims. And without departing from the subject matter of the present invention claimed in the claims, anyone with ordinary knowledge in the art to which the invention pertains is considered to be within the scope of the claims of the present invention to various extents that can be modified.

100: switchboard 101: switchboard enclosure
110: base 111: stopper member
200: seismic device 201: locking jaw
202: seismic spring 211: bearing block
212: ball bearing 300: binding device
301: rigid member 302: bolt
400: leaf spring 500: detection device
510: case 520: upper fixing part
530: lower fixing part 540: terminal block (connection part)
550, 560: cable 570: floating conductor
580: fixed conductor

Claims (6)

A base fixed to the lower surface of the switchgear with a predetermined thickness;
A frame surrounding the circumference of the base to be spaced apart from the outer wall of the base at a predetermined distance, and having a locking jaw in which an upper edge is bent inward;
A stopper member formed on an outer wall of the base to be spaced apart from the frame so that the base does not escape from the locking jaw;
a bearing block coupled between an inner bottom surface of the frame and the base, and having ball bearings coupled to an upper surface such that the base moves in a horizontal direction;
an earthquake-resistant spring having one end fixed to each inner surface of the frame and the other end positioned on an outer wall of the base to elastically support the base; and
A plate spring integrally formed with the bearing block and the earthquake-resistant spring to buffer a force acting vertically; A switchboard earthquake-proof device composed of; and
a floating conductor freely flowing forward, backward, left, and right according to the movement of the switchgear so that the stopper contacts the inner wall of the earthquake-proof device and generates an electrical switching signal;
a fixed conductor spaced apart from the fluid conductor by a predetermined distance to generate an electrical switching signal in contact with the fluid conductor; and
It consists of a sensing device consisting of; a terminal block for transmitting an electrical switching signal generated from the floating conductor and the fixed conductor to a control unit,
The moving distance of the moving conductor to contact the stationary conductor is the same as the moving distance of the stopper to contact the inner wall of the earthquake-proof device,
A switchboard earthquake-resistant device having an electrical protection function, characterized in that the stopper member and the length of the stopper member and the stopper member are set so that the movement of the stopper member is prevented by the stopper member and the contact with the inner wall of the earthquake-proof device is not hindered.
delete The method of claim 1,
The electrical switching is characterized in that power is applied to a cut-off device that cuts off power to the switchboard so that the power to the switchboard is cut off, and a predetermined warning sound or warning display is output so that the manager can easily check the floating state of the switchboard. A switchboard earthquake-resistant device with an electrical protection function.
The method of claim 1,
The switchboard earthquake-resistant device having an electrical protection function, characterized in that the sensing device is constructed in a cylindrical case in which a certain space is formed, and the floating conductor and the fixed conductor are respectively connected to a terminal block (connection unit).
The method of claim 1,
A switchboard earthquake-proof device with an electrical protection function, characterized in that the separation distance between the floating conductor and the fixed conductor is set so that the floating conductor contacts the fixed conductor even when the stopper is inverted at a certain angle or more without contacting the inner wall of the earthquake-proof device .
The method of claim 1,
The plate spring is composed of a size that can cover the size of the bearing block and the earthquake-resistant spring.

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