KR20150078407A - Vibration Proof Unit for Distributing Board - Google Patents

Abstract

Provided in the present invention is a vibration proof unit for a power board which is characterized by comprising multiple first support parts combined with an edge part of the bottom of an outer box body of a power board; second support parts arranged on a lower side of the first support part, and fixed on an upper surface of excitation part where vibration is generated; an elastic part interposed between the first support parts and the second support parts, and preventing transfer of vibration from the first support parts to the second support parts or the second support parts to the first support parts by having different hardness inside; and a coupling part inserted into a coupling hole formed on an upper surface of the first support part, and connecting and coupling the first support parts, the second support parts, and the elastic part.

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.

Registration Utility Model No. 20-0457648.

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; An elastic portion interposed between the first and second support portions to prevent vibration from being transmitted to each other between the first and second support portions, and an elastic portion extending integrally from the center of the second support portion, And a fixing part for integrally connecting the elastic part and the fixing part.

The first support portion is fixed to the bottom surface of the enclosure main body and has a first support plate on which a fixing hole for allowing the fixing portion to flow therein is formed, and a first support plate projecting downward from the first support plate, And a first vibration damping pad interposed between the first support plate and the bottom surface of the case main body.

The elastic portion has a first through hole penetrating the inside thereof to contact the outer circumferential surface of the fixing portion. The first through hole is spaced apart from the first through-hole in the horizontal direction and has a constant A fourth through hole formed in a width direction may be formed.

The elastic portion includes a restoring spring selectively inserted into the fourth through-hole corresponding to the weight of the enclosure body to prevent a change in shape of the elastic portion in a horizontal direction when an external force is applied, and to provide an elastic restoring force in a vertical direction .

The second support portion may include a second support plate fixed to the upper surface of the excitation portion and a second vibration damping pad interposed between the second support plate and the excitation portion.

The vibration-damping unit for a power transmission and transmission system may further include a support plate coupled to the fixing part to prevent the elastic part from being detached from the accommodation space inside the housing.

The pair of vibration-damping units for a power-transmission-and-distribution system are formed by forming a rectangular female screw on the inner circumferential surface of the stationary member so as to correspond to a rectangular male screw and engaging with a lower end of the stationary portion, And may further include a height adjuster selectively adjustable.

Wherein the height adjuster comprises: a first square nut which is reciprocated in a vertical direction along the longitudinal direction of the fixing part to come into contact with the lower side of the support plate; and 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.

The fixing portion may include a sound insulating member disposed on the first vibration damping pad and provided between the first supporting plate and the fixing portion to reduce vibration or noise.

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 expected that the hardness of the inside of the elastic part can be changed to securely protect the switchboard regardless of the magnitude of the vibration.

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 (not shown) is provided on the door part 12 so that an operator can check the inside of the enclosure main body 10. [

The viewing window may be formed of transparent glass or synthetic plastic so that the inside of the enclosure main body 10 is visible, and the viewing window may be formed to be openable and closable so that a hand or a part of the upper body of the operator may be moved .

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, and the power generation amount, the solar radiation amount, the network environment setting, the power generation efficiency, and the like, and is disposed on the door unit 12.

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, (Not shown).

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.

Also, it is preferable that the enclosure main body 10 is installed in an independent enclosure requiring a dustproof structure as a selected one of a generator, an electric distribution panel, a distribution panel, a motor control panel, and a waterfront panel.

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 first vibration damping pad 30 interposed between the first support plate 111 and the bottom surface of the enclosure main body 10.

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

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.

A first through hole 132 passing through the inside of the elastic part 130 is formed and a fourth through hole 136 formed adjacent to the first through hole 132 and formed at a predetermined depth along the circumferential direction of the elastic part .

The fixing part 140 is inserted into the first through hole 132 and the outer circumferential surface of the fixing part 140 is in close contact with the first through hole 132. [

The elastic portion 130 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.

The first and second support portions 110 and 120 may be formed in the elastic portion 130 when the load of the first support portion 110 is applied to the upper portion of the elastic portion 130, Dust is prevented while preventing contact with each other.

The fourth through hole 136 is formed to extend from the upper surface of the elastic part to a predetermined depth along the circumferential direction of the elastic part 130, unlike the shape in which the first through hole 132 penetrates the elastic part 130 And is formed to have a constant width.

A restoring spring 133, which is capable of absorbing the impact in the vertical direction, is inserted into the fourth through hole 136. The restoring spring 133 is selectively inserted into the fourth through hole 136 corresponding to the weight of the enclosure main body 10. [

The restoring spring 133 prevents a change in the shape of the elastic part 130 in the horizontal direction when an external force such as an earthquake is externally applied to prevent the shape of the elastic part 130 from being easily deformed or restored And provides an elastic restoring force in the vertical direction, thereby doubling the elastic restoring force of the elastic part 130.

Also, although not shown in the drawing, the restoring spring 133 may be inserted into the elastic part 130 and injection-molded integrally with the elastic part 130.

At this time, the elastic part 130 is formed in the first hardness range F1 formed adjacent to the first through hole 132 and around the fourth through hole 136 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 in this manner is set such that the first hardness range F1 is about 60 to 70 hardness, the second hardness range F2 is about 55 to 60 hardness, the third hardness range F3, Is formed in a range of about 50 to 55 hardness.

The second support part 120 includes a second support plate 121 fixed on the installation surface and a second vibration damping pad 40 interposed between the second support plate 121 and the installation surface.

The fixing part 140 is integrally formed on the second supporting plate 121 so as to protrude vertically upward, and a rectangular male screw is formed on the outer circumferential surface.

The outer circumferential surface of the fixing portion 140 may be closely fitted to the inner circumferential surface of the first through hole 132 formed in the elastic portion 130.

The lower end of the fixing part 140 is coupled with a height adjusting part 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 on an inner circumferential surface thereof so as to be vertically reciprocable along the longitudinal direction of the fixing portion 140, 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 portion 140.

The fixing part 140 is coupled to the upper side of the first square nut 161 and is provided with a supporting plate 150 whose height changes according to the vertical reciprocating motion of the first square nut 161.

The support plate 150 serves to prevent the elastic part 130 from being detached from the housing 114.

The support plate 150 supports the elastic part 130 to correspond to a position where the height adjusting part 160 is fixed on the fixing part 140 to maintain the horizontal state of the enclosure body 10. [ Let's do it.

The fixing portion 140 may be configured to penetrate through the coupling hole 112 and the first hole 132 to simultaneously couple the first supporting portion 110 and the elastic portion 130 and the second supporting portion 120, Or in the horizontal direction.

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 fixing portion (140).

The nut 141 provided at the end of the fixing part 140 is separated from the upper surface of the coupling hole 112 so that the first supporting part 110 can elastically flow from the second supporting part 120 in a vertical direction, Or when the first supporting part 110 is fastened on the fixing part 140 and the first supporting part 110 and the case body 10 are engaged with each other, A sound insulating member 143 inserted into the fixing portion 140 and fastened to the nut 141 is disposed so that the nut 141 is closely contacted with the sound insulating member 143 and the first supporting plate 111. At this time, the first vibration damping pad 30 is disposed between the sound insulating member 143 and the first support plate 111, and friction or separation occurs between the sound insulating member 143 and the first vibration damping pad 30 The washer 142 is fastened.

The sound insulating member 143 provides a function of reducing vibrations and noise generated between the fixing part and the upper surface of the first supporting part 110.

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.

Referring to FIG. 6, the first support portion 110 is in a state of being vertically downwardly pressed, and the elastic portion 130 is in contact with the first support portion 110 so as to be downwardly compressed, unlike FIG.

This is because the elastic portion 130 can be vertically downwardly pressed by the load applied to the first support portion 110 and pressure can be applied while the mounting surface vibrates in the vertical direction.

The elastic portion 130 is slightly compressed so that the height of the elastic portion 130 is reduced and the pressure of the elastic portion 130 is increased to prevent the first support portion 110 and the second support portion 120 from being 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.

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 support portion 110 shows a state in which the first support portion 110 is pressed in the left direction.

Here, the inner peripheral surface of the right side of the housing 114 is in close contact with the elastic part 130 to increase the contact area or increase the internal pressure.

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 elastic part 130 to the inner peripheral surface of the housing 114 so that the contact area between the inner peripheral surface of the right side of the housing 114 and the elastic part 130 increases.

The first support portion 110 is disposed in the left direction relative to the second support portion 120 so that the fixing portion 140 is simultaneously adjacent to one side of the engagement hole 112 and the first through hole 132 . The diameter of the coupling hole 112 is preferably at least equal to or larger than the diameter of the first through hole 132.

Therefore, even if an external force is applied between the first support part 110 and the second support part 120, the shape of the elastic part 130 and the shock absorbing action of the elastic restoring force of the restoring spring 133 prevent the external force 10 can be minimized.

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 (9)

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;
An elastic part interposed between the first support part and the second support part to prevent vibration from being transmitted to each other between the first support part and the second support part,
A fixing part extending integrally from an upper part of the second support part to integrally connect the first support part and the elastic part to each other;
And a vibration-damping unit for a power transmission / distribution system. The method according to claim 1,
The first support portion
A first support plate fixed to a bottom surface of the enclosure main body and having a coupling hole through which the fixing portion can flow,
A housing having a receiving space formed in a circular or polygonal shape in one end thereof so as to be protruded downward from the first supporting plate and inserted into the elastic part;
And a first anti-vibration pad interposed between the first support plate and the bottom surface of the enclosure main body. The method of claim 2,
The elastic portion
A first through hole is formed to penetrate the inside of the fixing portion so as to be in contact with the outer circumferential surface of the fixing portion and is formed to have a constant width along the circumferential direction of the elastic portion so as to be spaced apart from the first through hole in the horizontal direction, And a fourth through hole is formed in the second through-hole. The method of claim 3,
The elastic portion
And a restoring spring selectively inserted into the fourth through-hole corresponding to the weight of the enclosure body to prevent a change in shape of the elastic part in a horizontal direction when an external force is applied, and to provide an elastic restoring force in a vertical direction A dustproof unit for a power distribution panel. The method of claim 2,
The second support portion
A second support plate fixed to an upper surface of the vibrating unit, and a second vibration damping pad interposed between the second support plate and the vibrating unit. The method of claim 5,
Further comprising a support plate coupled to the fixing portion to prevent the elastic portion from being detached from the accommodating space inside the housing. The method of claim 6,
A pair of fixing members which are formed on the inner circumferential surface of the fixing member so as to correspond to the rectangular male screw formed on the fixing member and are fastened to the lower end of the fixing portion and are brought into contact with the bottom surface of the supporting plate, Further comprising a control unit for controlling the operation of the switchgear unit. The method of claim 7,
The height adjuster includes:
A first square nut reciprocally moved in the vertical direction along the longitudinal direction of the fixing part to contact the lower side of the support plate,
And a second square nut fastened to the lower side of the first square nut to fix the position of the first square nut. The method of claim 6,
The fixing unit includes:
And a sound insulating member disposed on the first vibration damping pad and provided between the first support plate and the fixing portion to reduce vibration or noise.

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