KR101578677B1 - Vibration Proof Unit for Distributing Board - Google Patents

Abstract

The present invention relates to a switchgear comprising: a first support portion coupled to a plurality of corner portions of a bottom surface of an enclosure main body of a switchgear; A second support portion disposed on the lower side of the first support portion and fixed to an upper surface of the excitation portion where vibration is generated; And an elastic portion provided between the first support portion and the second support portion to prevent vibration from being transmitted from the first support portion toward the second support portion or from the second support portion toward the first support portion, And a fastening part inserted into the coupling hole formed on the upper surface of the first support part and coupling the first support part and the second support part and the elastic part to each other.

Description

{Vibration Proof Unit for Distributing Board}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration-damping unit for a switchgear, and more particularly, to a vibration-damping unit for a switchgear which can reduce vibration applied from a mounting surface.

In general, the switchgear is responsible for receiving power from the power supplier and supplying power to the equipment requiring power consumption, and is building related facilities of a conventional power station having power receiving facilities and power distribution facilities.

For example, the inside of the above-mentioned switchboard is divided into an extra high-voltage side and a low-voltage side, and the power receiving equipment receiving electricity from the power supplier KEPCO and the electricity received through the power receiving equipment are changed to the voltage or capacity required by the user And a circuit breaker to protect the entire facility from accidents such as power outages.

In consideration of the safety of electric shock and fire in the process of use, the switchboard used in this case is an insulated main body having a switchgear door for restricting direct contact with the outside and for inspecting or maintaining the inside of the switchgear, In consideration of reliability against a supply voltage, various protective devices such as a circuit breaker and a lightning arrester are installed in the main body as essential requirements.

In addition, such a switchboard is connected to an inverter that converts the DC current supplied from the connection module into an AC current for automatic management.

The inverter includes a PCB, a reactor, a capacitor, a measurement control module, an SMPS, an EMI filter, and a transformer for converting electric power into AC current to supply electric power.

And an output unit connected in series to the input unit and outputting a direct current output from the input unit to the inverter, and an output unit for outputting a current value and a voltage value And monitors the received signal.

Such a conventional technology relating to a switchboard is described in detail in a registration application No. 20-0457648 entitled "Wiring for a Switchboard ".

However, the conventional switchboard has a vibration proofing facility corresponding to the vibration applied in either one of the vertical direction and the horizontal direction from the installation surface, and therefore, there is a limit to the complex vibration damping in both the vertical direction and the horizontal direction.

Also, there is still a problem that the anti-vibration structure is easily broken when the vibration in the horizontal direction is applied.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vibration-damping unit for a power and control system capable of coping with vibrations applied in a combined manner in vertical and horizontal directions.

In order to accomplish the above object, according to the present invention, there is provided a cabinet comprising: a first support portion coupled to a plurality of corners of a bottom surface of an enclosure main body of a switchgear; A second support portion disposed on the lower side of the first support portion and fixed to an upper surface of the excitation portion where vibration is generated; And an elastic portion provided between the first support portion and the second support portion to prevent vibration from being transmitted from the first support portion toward the second support portion or from the second support portion toward the first support portion, ; And a sensor unit inserted on the upper surface of the first support unit to engage the first support unit with the second support unit and the elastic unit and to detect movement of the first support unit, And a vibration-damping unit for a switchgear.

The first support part includes a first support plate fixed to a bottom surface of the enclosure main body and a housing protruded downward from the first support plate and provided with a receiving space formed with a circular or polygonal cross section, .

The resilient portion may include a horizontal vibration preventing member that is in contact with a part of the inner circumferential surface of the housing and a vertical vibration preventing member extending between the upper surface of the first supporting plate and the upper portion of the second supporting portion, have.

Wherein the elastic portion has a first hardness range formed adjacent to a first through hole formed at the center of the vertical vibration preventing member and a second hardness range formed outside the first hardness range, A second hardness range formed adjacent to the first hardness range and a third hardness range formed outside the second hardness range and extending to an outer surface of the elastic part.

The first hardness range may be greater than the second hardness range, and the second hardness range may be greater than the third hardness range.

The second support portion includes a second support plate fixed to the upper surface of the vibrating portion, a fixing member inserted into a support groove protruded upward from the second support plate and formed inside the horizontal vibration preventing member, and having a rectangular male screw on an outer circumferential surface thereof can do.

The sensor unit may include an extension member fixed on the second support plate and a switch that is elastically disposed in the direction of the outer circumference of the housing from the extension member and switches the current or voltage as the housing moves within a set range have.

The plurality of switches may be provided at regular intervals along the outer circumferential surface of the housing.

The switch may be spaced apart from the outer circumferential surface of the housing by a predetermined interval.

The sensor unit may include a counter for sensing the number of times the switch contacts the housing, and a timer for applying power after a preset time from the time when the switch and the housing last contacted.

The vibration-damping unit for the transmission / distribution system may further include a support plate coupled to the fixing member to prevent the elastic member from being detached from the housing.

The vibration-damping unit for a power-transmission / distribution system includes a height adjusting portion formed on an inner circumferential surface of the rectangular member to correspond to a rectangular male screw formed on the fixing member and fastened to the fixing member and a pair of which is fastened to the lower side of the support plate, .

Wherein the height adjuster comprises: a first square nut which is reciprocally moved in a vertical direction along the longitudinal direction of the fixing member to come into contact with the lower side of the support plate; a second square nut fastened to the lower side of the first square nut, And a second square nut that engages a second end of the second end.

According to the vibration-damping unit for a switchgear according to the present invention, the vibration applied in the vertical direction and the horizontal direction can be suppressed through the vibration-proof unit, and the durability of the vibration-proof unit can be remarkably increased by improving the shape of the elastic part. In addition, it is possible to safely protect the switchboard regardless of the magnitude of the vibration by varying the hardness of the inside of the elastic part, and in the case where severe vibration is applied through the sensor part, the power can be prevented in advance in case of emergency.

1 is a front view schematically showing the outline of a switchboard according to an embodiment of the present invention.
2 is a partially enlarged view showing the dustproof unit for the power transmission &
Fig. 3 is an exploded perspective view showing the dustproof unit for the power distribution panel shown in Fig. 2. Fig.
4 is a partially enlarged perspective view showing the elastic portion shown in Fig.
5A and 5B are reference views showing the front surface and the flat surface of the elastic portion shown in Fig. 4, respectively.
Fig. 6 is a reference view showing a state in which the vibration-damping unit for a switchboard shown in Fig. 2 is pressed in the vertical direction. Fig.
Fig. 7 is a reference view showing a state in which the dust-suppression unit for a switchboard shown in Fig. 2 is pressed in the horizontal direction. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms and words used in the specification and claims should not be construed to be limited to ordinary or dictionary meanings, and the inventor should appropriately define the concept of the term to describe its invention in the best way possible It should be construed in the meaning and concept consistent with the technical idea of the present invention.

1 is a front view schematically showing the outline of a switchboard 1 to which a dustproof unit 100 for a switchboard according to an embodiment of the present invention is coupled.

1, the switchboard 1 includes an enclosure main body 10 including an inverter module (not shown), a water distribution module (not shown) and a transformer (not shown) , And a vibration-damping unit (100) for a transmission / transmission system that supports a lower portion of the enclosure main body (10).

The switchboard (1) according to the present invention will be described as an example in which sunlight is used as a basic power generation device.

The enclosure main body 10 is formed in a rectangular parallelepiped shape and has one or a plurality of partition walls (not shown) so that the inverter module, the water distribution module, and the transformer can be positioned therein, (Not shown) is formed.

In addition, although not shown in the drawing, basic components such as a PCB, a circuit breaker, a lightning arrester, a fuse, an opening and closing device, and a structure for heat dissipation and moisture-proof are additionally provided.

A door portion 12 is provided on one side surface of the enclosure main body 10 to selectively open the space portion.

The door unit 12 is provided with one or a plurality of openings for partially or totally opening the space, and the inverter module, the water distribution module, and the transforming unit are installed and maintained through the door unit 12.

The door portion 12 may be formed as a hinged or sliding door structure, and the door portion 12 of the switchboard 1 according to the present invention is installed as a hinged door.

At this time, a sight window 14 is provided on the door part 12 so that an operator can check the inside of the enclosure main body 10. [

The viewing window 14 is formed of transparent glass or synthetic plastic so that the inside of the enclosure main body 10 can be seen and the viewing window 14 is formed to be openable and closable, As shown in FIG.

Also, the enclosure main body 10 includes a display unit 13 that displays electricity generation information input from and output from the inverter module and the water distribution module, and whether there is an abnormality.

The display unit 13 displays the current diagnosis status of the inverter module and the power distribution module, the power generation amount, the solar radiation amount, the network environment setting, the power generation efficiency, and the like, and is preferably disposed on the door unit.

The vibration-damping unit 100 for a transmission / distribution system has a function of preventing transmission of vibration generated from any one side of the enclosure main body 10 or the mounting surface to the other side, and a detailed description will be later.

3 is an exploded perspective view of the dustproof unit 100 for a power transmission / distribution system shown in FIG. 2, and FIG. 4 is an exploded perspective view of the elastic part 130 and FIGS. 5A and 5B are reference views showing the front face and the plane of the elastic part 130 shown in FIG. 4, respectively.

2 to 5B, the vibration-damping unit 100 for a switchgear includes a first support 110 coupled to a bottom of the enclosure body 10, a second support 110 disposed below the first support 110, A first support part 110 coupled to the first support part 110 and a second support part 120 coupled to the first support part 110 and the second support part 120, And a sensor unit 170 provided on the second support unit 120 for sensing movement of the first support unit.

Here, the enclosure body 10 corresponds to a vibrating portion to be protected from external vibrations, and the second supporting portion 120 is installed on a mounting surface, that is, a vibrating portion to which vibration is applied.

Further, the enclosure main body 10 is preferably installed in an independent enclosure since a generator, an electric distribution panel, a distribution panel, a motor control panel, a water level front panel, and the like are mounted therein and a dustproof structure is required on the installation surface.

A plurality of the first supporting portions 110 are coupled to the bottom edge portion of the enclosure main body 10.

The first support part 110 is provided with a first support plate 111 fixed to the bottom surface of the enclosure main body 10 and a second support plate 111 protruding downward from the center of the first support plate 111, And a housing 114 having a receiving space 115 formed therein.

The first support plate 111 has a function of fixing the housing 114 to the bottom surface of the enclosure main body 10 and a coupling hole 112 is formed at a center portion thereof so that the coupling portion 140 can be inserted therein. do.

The housing 114 has a circular or polygonal cross section and the elastic portion 130 is formed in a shape corresponding to the shape of the housing 114 and inserted into the accommodation space 115.

The elastic part 130 prevents the first support part 110 and the second support part 120 from coming into contact with each other so that the vibration generated from one side of the first support part 110 or the second support part 120 And is prevented from being transmitted in the other direction.

The elastic part 130 includes a horizontal vibration preventing member 133 having a portion in contact with the inner circumferential surface of the housing 114 and an elastic member 130 extending inward from the upper end of the horizontal vibration preventing member 133, And a vertical vibration preventing member 131 disposed between the inner bottom surface and the upper surface of the second supporting portion 120.

The horizontal vibration preventing member 133 may be formed in a circular or polygonal shape corresponding to the shape of the housing 114. Hereinafter, a shape having a circular cross section as shown in FIG. 2 will be described as an example.

In addition, in the case where one end surface of the horizontal vibration preventing member 133 is polygonal, the cross sectional area of the upper end and the lower end may be smaller than the cross sectional area of the central portion.

The vertical vibration preventing member 131 is formed to cover a part of the upper portion of the horizontal vibration preventing member 133 so that when the load is applied to the first supporting portion 110 and is vertically downwardly pressed, So that the dustproofness is achieved.

The vertical vibration preventing member 131 includes a first through hole 132 through which the coupling unit 140 can be inserted and an inner bottom surface of the vertical vibration preventing member 131 and the second supporting unit 120, A predetermined gap is formed.

A plurality of second through holes 135 are formed adjacent to the periphery of the first through holes 132 so as to pass through the vertical vibration preventing member 131 and the horizontal vibration preventing member 133.

The elastic part 130 is formed to extend from the first hardness range F1 formed adjacent to the first through hole 132 to the inside of the second through hole 135 outside the first hardness range F1 A second hardness range F2 is formed outside the second hardness range F2 and a third hardness range F3 is formed outside the second hardness range F2.

It is preferable that the first hardness range F1 is greater than the second hardness range F2 and the second hardness range F2 is greater than the third hardness range F3.

The elastic portion 130 is preferably made of a synthetic rubber material, more preferably GEPO250C.

The hardness of the material for vibration proof rubber is measured through a hardness tester for measuring the hardness of rubber or plastic. The hardness is divided into various types according to the strength of the tester and the spring. More precisely, there are cases where different types of rubber hardeners are used, so they can be selected with reference to the ASTM standard.

The hardness of the elastic part 130 measured as described above is in the range of about 50 to 70 hardness in the first hardness range F1, about 45 to 55 hardness in the second hardness range F2, Is formed in a range of about 45 to 30 hardness.

The second support portion 120 includes a second support plate 121 fixed on the mounting surface and a fixing member 123 protruding from the upper surface of the second support plate 121.

The fixing member 123 is formed so as to protrude vertically upward on the second support plate 121, and has a rectangular male screw on an outer circumferential surface thereof.

At this time, the upper end of the fixing member 123 is inserted into the support groove 134 so as to be in contact with or adjacent to the bottom surface of the vertical vibration preventing member 131.

Further, the outer circumferential surface of the fixing member 123 is preferably in close contact with the inner surface of the horizontal vibration preventing member 133.

The fixing member 123 includes a height adjusting unit 160 which is engaged with and coupled with a rectangular male screw formed on the outer circumferential surface.

The height adjuster 160 includes a first square nut 161 having a rectangular internal thread formed on an inner circumferential surface thereof so as to be vertically reciprocable along the longitudinal direction of the fixing member 123, And a second square nut 162 fastened to the lower side of the nut 161.

The first square nut 161 and the second square nut 162 rotate in opposite directions and can be loosened or tightened and rotated in the same direction to adjust the height on the fixing member 123.

The fixing member 123 is provided with a supporting plate 150 coupled to the upper side of the first square nut 161 and having a height varying in accordance with the vertical reciprocating motion of the first square nut 161.

The support plate 150 provides a function of preventing the elastic part 130 from being detached from the housing 114 by contacting the lower end of the horizontal vibration preventing member 133.

The support plate 150 supports the elastic portion 130 to correspond to a position where the height adjusting portion 160 is fixed on the fixing member 123 to maintain the horizontal state of the enclosure body 10 Let's do it.

The coupling portion 140 is coupled to the center of the fixing member 123 by passing through the coupling hole 112 and the first hole 132. The coupling portion 140 is engaged with the first supporting portion 110 and the elastic portion 130, 2 supporting portions 120 at the same time to prevent them from vertically or horizontally deviating from each other.

The coupling hole 112 and the first through hole 132 may be formed in the first and second supporting portions 110 and 132 so that the first supporting portion 110 or the elastic portion 130 can elastically flow in the horizontal direction due to the elasticity of the elastic portion 130. [ Is formed to have a diameter larger than the diameter of the coupling part (140).

The head 141 provided at the end of the coupling part 140 is spaced apart from the upper surface of the coupling hole 112 so that the first support part 110 can elastically flow in the vertical direction from the second support part 120. [ And a washer 142 is fastened to prevent friction or disengagement between the coupling hole 112 and the head 141. [

A sound insulating member 143 is provided between the washer 142 and the first support plate 111 to be fixed to the coupling member.

The sound insulating member 143 functions to reduce vibrations and noise generated between the coupling portion and the upper surface of the first support portion 110.

The sensor unit 170 includes an extension member 171 fixed on the second support plate and a resilient member 171 elastically disposed adjacent to the outer circumferential surface of the housing 114 from the extension member 171, And a switch 172 for switching the current or voltage in accordance with the movement within the range.

As shown in FIG. 2, the extension members 171 are disposed on the second support plate 121 at equal intervals. However, the extension members 171 may be formed as one member around the housing 114. It is needless to say that the extension member 171 may be provided in a plurality of three or more spaces adjacent to the housing 114 at equal intervals.

The switch 172 senses the horizontal movement of the first support portion 110 at an upper portion of the extension member 171. The switch 172 is also disposed on the extension member 171 at equal intervals of three or more and the housing 114 and the switch 172 are brought into contact with each other according to the movement of the first support portion 110 And performs a function of turning on / off the power.

Preferably, the switches 172 are provided on the extension member 171 at equal intervals along the outer circumferential surface of the housing 114. The switch 172 is disposed at a predetermined distance from the outer circumferential surface of the housing 114. The setting interval may set an interval of a portion where the switch 172 contacts the outer circumferential surface of the housing in consideration of a flexible flow interval of the switch.

This is because the switch 172 may make unreasonable contact with the housing 114 in consideration of the hardness of the elastic portion 130, the load of the enclosure main body 10, the number of the elastic portions 130, It is possible to adjust the setting interval so as to prevent the occurrence of the contact in the case of the weakening.

In addition, the setting interval may prevent the power supply from being cut off due to light external force, that is, wind, interference with the operator, shaking due to in and out, and the like.

At the end of the switch 172, a roller 173 rotatably disposed from the end of the switch 172 is provided.

The roller 173 functions to reduce wear caused by noise or friction generated when the switch 172 and the housing 114 are in direct contact with each other.

The sensor unit 170 includes a counter 175 for detecting the number of contact between the switch 172 and the housing 114 and a timer 176 for detecting the contact time of the switch 172 and the housing 114. [ ).

The counter 175 senses the direction in which the switch 172 and the housing 114 are in contact with each other, and the number of contact, and can be used for predicting or analyzing the direction or direction of the vibration. .

The timer 176 senses the elapsed time from the last contact time of the switch 172 and the housing 114 and detects the time to allow the power to be applied to the enclosure main body 10 after the set time. Although not shown in the drawings, it is possible to control power to be applied to the enclosure body after the set time in a state where no additional vibration is detected through a separate control unit (not shown).

Fig. 6 is a reference view showing a state in which the dustproof unit 100 for a switchgear shown in Fig. 2 is pressed in the vertical direction.

6, the first supporting portion 110 is pressed downwardly and the vertical vibration preventing member 131 is in close contact with the first supporting portion 110 and the fixing member 123, .

This can be vertically downwardly pressed by the load applied to the first support portion 110 and pressurized while the mounting surface vibrates in the vertical direction.

The vertical vibration preventing member 131 is lowered to reduce the height of the horizontal vibration preventing member 133 so that the first supporting portion 110 and the second supporting portion 120 are in direct contact with each other .

Also, there is an effect that the minute vibration and noise generated in the switchboard 1 disposed above the first support part 110 are remarkably reduced.

Here, the sensor unit 170 is arranged to be spaced apart from the housing 114 in a predetermined interval.

7 is a reference view showing a state in which the vibration-isolating unit 100 for the power-transmission-side panel shown in Fig. 2 is pressed in the horizontal direction.

Referring to FIG. 7, the first supporting part 110 is pressed vertically downward as shown in FIG. 6, and the vertical vibration preventing part 131 is closely contacted between the first supporting part 110 and the fixing part 123 And the first supporting portion 110 is pressed in the left direction.

The inner circumferential surface of the housing 114 is in close contact with the horizontal vibration preventing member 133 to increase the contact area and only the central portion of the horizontal vibration preventing member 133 is in contact with the inner circumferential surface of the left inner circumferential surface of the housing 114.

This is because the second support part 120 fixed to the installation surface due to a temporary earthquake such as an earthquake is conveyed in the rightward direction and exhibits a phenomenon occurring simultaneously with the movement of the first support part 110 A pressure is applied from the horizontal vibration preventing member 133 to the inner circumferential surface of the housing 114 to increase the contact area between the inner peripheral surface of the right side of the housing 114 and the horizontal vibration preventing member 133.

The first support portion 110 is disposed in the left direction relative to the second support portion 120 so that the coupling portion 140 is disposed adjacent to one side of the coupling hole 112 and the first through hole 132 at the same time do. Even when the diameter of the coupling hole 112 and the first through hole 132 are equal to each other, at least the vertical vibration preventing member 131 is elastically deformed by the resilience of the elastic portion 130, And is projected closer to the fastening portion 140. Therefore, it is preferable that the diameter of the coupling hole 112 is at least equal to or larger than the diameter of the first through hole 132.

Therefore, as the one side pressure between the housing 114 and the horizontal anti-vibration member 133 increases, the first hardness range F1 comes into contact with the fastening portion, and the second hardness range F2 becomes the fixed The diameter of the second through hole 135 disposed on the right side of the second through hole 135 decreases as the first through hole 135 is pressed by the third through hole 135. As a result, 130 can be minimized, and the shape of the second through hole 135 can be restored by the improvement of the appropriate hardness range.

The switch 172 disposed on the left side of the sensor unit 170 is in contact with the outer circumferential surface of the housing 114. At this time, the switch 172 is resiliently separated from the housing 114 so that the switching operation occurs, and the number, direction, or interval of the switching operation is sensed, and whether or not the power supply is supplied to the inside of the enclosure main body 10 .

In this case, damage to the enclosure main body 10 due to an external force such as an earthquake can be remarkably reduced, and even if it is damaged, the internal power supply of the enclosure main body 10 can be cut off before that, It is possible to expect the effect that stable operation can be performed in comparison with the above.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: Vibration-proofing unit for switchgear 110:
120: second support part 130: elastic part
140: fastening part 150:
160:
1: Switchboard 10: Enclosure main body

Claims (13)

A plurality of first support portions coupled to a bottom edge portion of the enclosure main body of the power distribution panel;
A second support portion disposed on the lower side of the first support portion and fixed to an upper surface of the excitation portion where vibration is generated;
And an elastic portion provided between the first support portion and the second support portion to prevent vibration from being transmitted from the first support portion toward the second support portion or from the second support portion toward the first support portion, ;
A fastening part inserted into a coupling hole formed on an upper surface of the first support part and coupling the first support part and the second support part and the elastic part,
And a sensor unit provided on the second support unit and sensing movement of the first support unit,
The first support part includes a first support plate fixed to a bottom surface of the enclosure main body and a housing protruded downward from the first support plate and provided with a receiving space formed with a circular or polygonal cross section, ,
Wherein the elastic portion includes a horizontal vibration preventing member which is in contact with a part of the inner circumferential surface of the housing and a vertical vibration preventing member extending between the bottom of the first supporting plate and the upper portion of the second supporting portion,
Wherein the elastic portion has a first hardness range formed adjacent to a first through hole formed at the center of the vertical vibration preventing member and a second hardness range formed outside the first hardness range, A second hardness range formed adjacent to the first hardness range, and a third hardness range formed outside the second hardness range and extending to the outer surface of the elastic portion, wherein the first hardness range is larger than the second hardness range , The second hardness range is formed to be larger than the third hardness range,
The second support portion includes a second support plate fixed to the upper surface of the vibrating portion, a fixing member inserted into a support groove protruded upward from the second support plate and formed inside the horizontal vibration preventing member, and having a rectangular male screw on an outer circumferential surface thereof and,
The sensor unit includes an extension member fixed on the second support plate, a switch elastically disposed from the extension member in the direction of the outer circumference of the housing, for switching the current or voltage as the housing moves within a set range, And a timer for applying power after a predetermined time from a time when the switch and the housing are in contact with each other for a predetermined period of time. delete delete delete delete delete delete The method according to claim 1,
Wherein the switch comprises:
Wherein a plurality of said first and second housings are provided at equal intervals along an outer circumferential surface of said housing. The method according to claim 1,
Wherein the switch comprises:
Wherein the housing is disposed so as to be spaced from the outer circumferential surface of the housing by a predetermined interval. delete delete delete delete

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