KR101188817B1 - a distributing board having the earth-quake-proof function - Google Patents

Abstract

The present invention relates to a switchgear equipped with a seismic function to prevent damage to the internal electrical device even if a fluctuation occurs in the switchgear due to an earthquake, to prevent the occurrence of a short circuit due to damage to the electrical device. An enclosure base having a space, a door configured to open and close at the side of the enclosure base, an electric device installed inside the enclosure base, a fixing member which is a conductor fixed to an upper side of the enclosure base, and the fixing member; And a buffer member configured to have a predetermined distance between the cable connecting the electric device and the bottom plate forming the bottom surface of the electric device and the bottom of the enclosure base.

Description

Switchgear with seismic function {a distributing board having the earth-quake-proof function}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchgear, and more particularly, to a switchgear equipped with a seismic function to prevent the transformer from twisting or inclining due to vibration or shock caused by earthquake or the like.

In general, switchgear equipment is a power supply device that converts extra high pressure to low pressure and supplies power for apartments, buildings, schools, factories, ports, etc., and usually has a capacity of about 80 ~ 700kW.

Most switchgear equipment includes a transformer, an optimum operation controller and a power monitoring controller of the transformer, and is made of a high and low pressure unit of a single enclosure having a multi-layer structure to block external moisture or foreign substances, and to facilitate construction. do.

In particular, the power monitoring controller installed inside the high and low voltage integrated switchgear processes the sensing values of the temperature sensor and the current voltage sensor to extract information such as operating temperature, load rate, phase loss, power factor, harmonic rate, and unbalance rate of the high voltage transformer. It can be notified to the administrator through the LCD display attached to the power monitoring controller, and also transmitted to the remote management system through the communication interface device.

1 is a schematic diagram schematically showing a switchgear according to the prior art.

As shown in FIG. 1, the switchgear according to the prior art includes an enclosure base 10 installed on the ground C, a door 20 configured to open and close at a side surface of the enclosure base 10, and the enclosure base. (10) connecting the electric device 30 installed inside, the fixing member 40 which is a conductor fixed to the upper side of the enclosure base 10, and the fixing member 40 and the electric device 30; It consists of a cable 50, the power supplied by the power company is sent to the electric device 30 through the cable 50.

At this time, the fixing member 40 is fixed to the upper side of the enclosure base 10 through the insulator 60.

However, since the switchgear according to the prior art is fixedly installed on the ground, when an earthquake occurs, the shock wave is transmitted to the switchgear as it is, and the electric equipment installed inside the switchgear is damaged, so that a stable power supply cannot be provided where power is needed. This results in electric shock.

The present invention has been devised to solve the above-described conventional problems, and earthquake-proof function to prevent damage to the internal electrical equipment even if a fluctuation in the switchboard due to an earthquake or the like prevents leakage of electrical equipment due to damage. The purpose is to provide a switchboard equipped with this.

The switchgear equipped with a seismic function according to the present invention for achieving the above object is installed on the ground and having an inner space, a door configured to open and close the side of the enclosure base, and installed inside the enclosure base Between the electrical device, a fixing member which is a conductor fixed to the upper side of the enclosure base, a cable connecting the fixing member and the electrical device, and a bottom plate which forms a lower surface of the electrical device and the bottom of the enclosure base. Characterized in that it comprises a buffer member configured with a predetermined interval.

The switchgear equipped with a seismic function according to the present invention has the following effects.

That is, even if a fluctuation occurs in the switchgear due to an earthquake or the like through the seismic design between the lower part of the electric device and the bottom plate forming the bottom of the switchboard, the shock wave is prevented from being transmitted directly to the internal electric device by the buffering action of the seismic design. It is possible to prevent the occurrence of a short circuit due to damage to the electrical equipment.

1 is a schematic diagram schematically showing a switchgear according to the prior art
Figure 2 is a schematic diagram schematically showing a switchgear equipped with a seismic function according to the present invention
3 is an enlarged enlarged view of a portion of the buffer member of FIG. 2;
Figure 4 is a block diagram showing the internal configuration of a switchgear equipped with a seismic function according to the present invention
5 and 6 are front and side views of the transformer of FIG.

Hereinafter, with reference to the accompanying drawings illustrating a switchgear equipped with a seismic function according to the present invention in more detail.

Figure 2 is a schematic diagram schematically showing a switchgear equipped with a seismic function according to the present invention.

As shown in FIG. 2, the switchgear equipped with the seismic function according to the present invention is installed on the ground C and has an inner space, and is configured and opened on the side of the enclosure base 110. The door 120, the electric device 130 installed inside the enclosure base 110, the conductor fixing member 140 fixed to the upper side of the enclosure base 110, and the fixing member 140. And a buffer member configured to have a predetermined distance between the cable 150 connecting the electrical device 130 and the bottom plate forming the bottom surface of the enclosure base 110 and each corner of the lower electrical device ( 160, the power supplied by the power company is sent to the electric device 130 through the cable 150.

At this time, the fixing member 140 is fixed to the upper side of the enclosure base 110 through the insulator 170.

Here, in the embodiment of the present invention, the electric device 130 is described as an example of a transformer, but is not limited thereto, and may be used for any electric device mounted inside the enclosure base 110.

The switchgear equipped with the earthquake-proof function according to the present invention configured as described above is prevented from being applied to the electric device 130 by the buffer member 160 even if the enclosure base 110 is shaken by an earthquake or the like. Even if the electric equipment does not break, power can be supplied stably where power is needed, and it can prevent human injury due to a short circuit in advance.

That is, even if the ground fluctuates due to an earthquake, the shock wave is not directly transmitted to the electric device 130 mounted inside the enclosure base 110 by the buffering action of the shock absorbing member 160, so that the electricity inside the enclosure base 110 may be reduced. The device 130 may be protected from impact.

3 is an enlarged enlarged view of a portion of the buffer member of FIG. 2.

As shown in FIG. 3, the enclosure base including an insertion groove 111 formed at a predetermined depth with a predetermined interval on the bottom plate of the enclosure base 110, and the bottom and side surfaces of the insertion groove 111. The lower case 161 that spans the bottom plate of the 110, a leaf spring 162 mounted inside the lower case 161 to cushion up and down, and the leaf spring 162 to cover the electric device 130. And an upper case 163 contacting a lower portion of the upper case 163, a fastening member 164 fixing the enclosure base 110 and the lower case 161, and the leaf spring 162 and the upper case 163.

Here, although the insertion groove 111 is described as an example, the present invention is not limited thereto, and an insertion hole is formed through the enclosure base 110 or a separate insertion groove or insertion hole of the enclosure base 110 is formed. Instead, a cushioning member may be provided.

Figure 4 is a block diagram showing the internal configuration of a switchgear equipped with a seismic function according to the present invention.

As shown in FIG. 4, an enclosure base 110 having a form of a housing in which first to fourth space portions 111 to 114 divided into upper and lower spaces is provided inside, and the first to fourth space portions ( It is composed of a failure section automatic switch 220, a transformer 200, a power cut-off control unit 240 formed in 111 ~ 114, and a power fuse 250, an arrester 280, and a meter transformer 270.

Here, the inlet 300 formed at the rear of the enclosure base 110, the enclosure 320 formed at the side wall 310 of the enclosure base 110, and the inlet 300 and the enclosure 320 have passed through. It comprises a check hole 350 provided on the side wall 310 to facilitate the operation of connecting the high-voltage cable 330 to the fixing member 340 formed on the ceiling.

In this case, a plurality of shock absorbing members 160 are formed at regular intervals between the lower portion of the transformer 200 and the bottom plate of the enclosure base 110.

On the other hand, in the embodiment of the present invention, but the shock absorbing member 160 is configured to have a seismic function in the lower portion of the transformer 200, the same may be configured in the lower portion of the instrument transformer 270.

In addition, even when the enclosure base 110 includes a generator (not shown), the shock absorbing member 160 may be configured under the generator.

In addition, the inlet 300 is configured at the rear lower portion of the enclosure base 110 so that the high voltage cable 330 is introduced into the inside.

The enclosure 320 is configured to support the high-voltage cable 330 drawn through the inlet 300 is configured at the central side of the side wall 310.

The check hole 350 is an opening 351 to secure a space for a part of the upper body or hand of the operator or the inspector, and the door 352 is fixed to the front of the opening 351 to be opened and closed. It is formed.

The door 352 is fixed to one side of the opening 351 by a hinge so as to be opened and closed. However, in addition to the hinge type, the door 352 may be detachably fixed by screws to completely separate the cover from the opening.

The switchgear equipped with a seismic function having such a configuration opens the door 215 formed on one side, and the transformer 200, the failure section automatic switch 220, and the arrester 280, respectively, in the inner space of the enclosure base 110. The power fuse 250 and the instrument transformer 270 is installed by mounting and fixing.

Next, the assembly work of the switchgear is completed by fixing the cable to be connected to each of the installed equipment.

In such a state, the switchboard is moved to an appropriate place in accordance with the user's request, and seated to be horizontal, and then the door 352 formed at one side of the side wall 310 is opened.

Next, the high-voltage cable 330 is drawn into the inside through the inlet 300 formed at the rear lower portion of the enclosure base 110, and the high-voltage cable 330 drawn into the inner side of the side wall 310 is further formed. It penetrates the formed enclosure 320 and hangs down to predetermined length.

And pulls the high-voltage cable 330 hanging down to the upper portion of the housing 320 through the opening 351 from the outside so that the end of the high-voltage cable 330 is located in the connection portion of the fixing member 340, the screw The connection work of the high-voltage cable 330 is completed by fixing the connection using the back or the like.

Next, the final installation work is finished by locking the open door 352.

5 and 6 are front and side views of the transformer of FIG. 4.

As shown in Figure 5 and 6, the field coil (not shown) for the smooth operation of the transcoil (not shown) consisting of the primary coil and the secondary coil and the transcoil (not shown), and A rectangular frame-shaped housing 410 accommodating the transcoil and the magnetic field core coupled to each other, an insulating oil (not shown) having insulation to cool the heat generated during the transformation process inside the housing 410, and the Comprising a plurality of fin structure on each side of the housing 410 through a colgate method, the heat dissipation fin 420 for radiating heat inside the heat transmitted through the housing 410, and protrudes to the upper side of the housing 410 Heat pipes (not shown), which extend to the insulating oil and open at both sides at regular intervals, with a portion spaced apart from each other so as to discharge heat generated inside the housing 410 to the outside. Cooling fans configured on both sides of the heat pipe to blow air outside the housing 410 into the openings on both sides of the heat pipe and release the heat to the outside to dissipate heat transferred through the housing 410. 440 is configured.

The housing 410 has a rectangular shape, and a high pressure bushing 450a for insulating the conductor is installed on the upper surface of the housing 410 to transport current supplied from the outside into the transformer 200, and the reduced pressure is output on the side thereof. Low pressure bushing (450b) is installed so that.

The high pressure bushing 450a is disposed to be inclined upward from the side of the housing 410, and an angle of 45 ° is preferable as the inclination arrangement angle. The high pressure bushing 450a is provided so that the end portion thereof is not higher than that of the low pressure bushing 450b. This is to compensate for the height of the transformer 200 is abnormally increased by the high-pressure bushing 450a to enable a compact size of the transformer without deterioration in capacity.

Unlike the oil thermometer which measures the temperature by using the insulating oil as a medium, the winding thermometer 460 is installed in a state in which it is directly in contact with the coil (winding) to quickly represent the actual temperature of the coil in real time. It measures and displays the coil temperature more accurately and quickly than the oil thermometer, which reads the temperature delivered by the insulating oil and indicates it as the coil temperature.

Meanwhile, although the housing 410 is described in the form of a square frame in the embodiment of the present invention, the housing 410 may be formed in various shapes, for example, a cylinder or a polygon, without being limited thereto.

The heat dissipation fin 420 may be extended to the insulating oil inside the housing 410.

The cooling fan 440 is configured to allow the outside air to flow into the upper portion of the heat pipe and to suck and discharge the air in the upper portion of the heat pipe.

That is, the cooling fan 440 is configured to play a role opposite to each other to more efficiently cool the heat introduced into the heat pipe through the outside air and at the same time to quickly discharge the air heated on the heat pipe upper portion to the outside. Consists of.

On the other hand, the cooling fan 440 may be configured to face each other to introduce external air into the heat pipe may be discharged to the outside. At this time, to form a comb shape vertically from one side of the heat pipe to the other side so that the outside air flows smoothly.

Therefore, the cooling fan 440 can be more smoothly carried out when the outside air flows into the heat pipe or discharges the air in the heat pipe and the area adjacent thereto, thereby improving the cooling efficiency of the inlet transformer. have.

The heat pipe is covered by the casing 480, which covers the heat pipe in the form of a cover in order to prevent accidents such as burns by the heat pipe.

In addition, the evaporator (not shown) further comprises a copper tube and a rolled fin tube inserted into the rear surface of the heat pipe so as to absorb the rising oil temperature of the insulating oil in the transformer 200 to the maximum. can do.

The heat dissipation fin 420 is made of the same material as the housing 410, the length of the projecting on the surface of the housing 410 can be used to properly adjust according to the capacity of the smart inlet transformer.

The insulating oil is classified into low temperature, low temperature, high temperature, and the like, and is used in the heat pipe. In the case of the insulating oil of the transformer, oil temperature of 55 ° C. or lower is used, since the oil temperature must be maintained at about 55 degrees. In the example, distilled water is used.

The cooling fan 440 is composed of an AC cooling fan of low noise and large air volume, the specification of which can be appropriately used according to the size of the transformer 200 and the heat pipe.

On the other hand, the hand hole 490 is installed on the upper portion of the transformer 200, the size of the hand hole 490 is different depending on the capacity of the transformer, it is standardized into three, such as upper, middle, lower. For example, in the case of 750 kVA or more, the width is 850 mm and the length is 400 mm, and 400-70 kVA is 610 mm and the length is 320 mm, and 70 kVA or less is set to the width 470 mm and length 250 mm.

The handhole 490 has a number of airborne holes for inserting the heat pipes from four to eight, and the size of the holes to fill the bolts in the upper portion of the transformer 200 is 13 mm.

In addition, a controller (not shown) is attached to one side of the housing 410 to receive the temperature measured from the winding thermometer 460 and transmit the information to the outside or to control the cooling fan 440.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

110: enclosure base 120: door
130: electrical equipment 140: fixing member
150: cable 160: buffer member
170: insulator

Claims (5)

An enclosure base mounted on the ground and having an interior space,
A door configured at a side of the enclosure base;
A transformer installed in the inner space of the enclosure base;
A conductor fixing member fixed to an upper side of an inner space of the enclosure base;
A cable connecting the fixing member and a transformer;
And a buffer member configured to have a predetermined distance between a lower portion of the transformer and an upper portion of a bottom plate forming a bottom surface of the enclosure base.
The buffer member,
An insertion groove formed at a predetermined depth at regular intervals on the bottom plate of the enclosure base, a lower case spanning the bottom plate of the enclosure base, including a bottom surface and a side surface of the insertion groove, and mounted inside the bottom case; And a leaf spring for cushioning up and down, an upper case covering the leaf spring and contacting a lower portion of the transformer, and a fastening member for fixing the enclosure base and the lower case and the leaf spring and the upper case. Switchgear with seismic function. An enclosure base mounted on the ground and having an interior space,
A door configured at a side of the enclosure base;
A transformer installed in the inner space of the enclosure base;
A conductor fixing member fixed to an upper side of an inner space of the enclosure base;
A cable connecting the fixing member and a transformer;
And a buffer member configured to have a predetermined distance between a lower portion of the transformer and an upper portion of a bottom plate forming a bottom surface of the enclosure base.
The buffer member,
An insertion hole formed at a predetermined depth with a predetermined interval on the bottom plate of the enclosure base, a lower case covering the bottom plate of the enclosure base, including a bottom surface and a side surface of the insertion hole, and mounted inside the bottom case, A seismic shock absorber comprising: a leaf spring which buffers the furnace, an upper case covering the leaf spring and contacting a lower portion of the transformer, and a fastening member fixing the enclosure base and the lower case and the leaf spring and the upper case. Switchgear with function. delete delete delete

Images