KR101118099B1 - Busbar support structure - Google Patents

Abstract

The present invention relates to a busbar support structure, and more particularly, to a busbar support structure suitable for use in wind towers with large vibrations and fluctuations.

The busbar support structure according to the present invention includes a support for supporting a plurality of penetrating busbars spaced apart by a predetermined distance, wherein the support is made of an insulating material having elasticity and the surface of the installation structure by fixing means. It is installed to be in direct contact, the shape of the contact surface of the support in contact with the surface of the installation structure is formed corresponding to the shape of the surface of the installation structure.

Insulation, Folding, Hanger, Horizontal, Curved, Elastic

Description

Busbar support structure

The present invention relates to a busbar support structure, and more particularly, to a busbar support structure suitable for use in wind towers with large vibrations and fluctuations.

Patent document US 7,470,860 discloses a bus bar loading structure for preventing mechanical breakage caused by vibration or shaking of a wind tower. Referring to FIG. 5, the bus bar loading structure 100 includes a first connector 200 composed of a first support 201 and a first bracket 202, and a second support 301 and a first support. It is composed of a second connector 300 consisting of two brackets 302, the first and second support is a clamping structure provided with a plurality of cutouts that are rounded openings, a plurality of cylindrical conductor bars (500) ) Is placed on and supported by the cutout portion.

In addition, the first connector 200 is secured by fastening the legs 2021 of the first bracket 202 to the wind tower with a fastener 203, the second connector 300 is a second bracket (302) The U-shaped spring 303 is connected to the legs 3021 through the connection piece 304, while the connection piece 304 is fixed to the wind tower with a fastener 305 to form an elastic loading state.

This configuration compensates for the movement of the wind tower due to vibration while firmly fixing the busbar loading structure to the wind tower through the first connector 200 in the fixed loading state and the second connector 300 in the elastic loading state. And reducing mechanical breakage.

However, in the conventional technology, since the leg portion of the bracket is fixed to the wind tower in the case of the fixed load portion, there is a problem that the load resistance is weak only by the contact area between the wind tower and the leg. In this case, when deformation exceeds the elastic limit due to the load, there is a problem that it is difficult to function as a bus bar loading structure any more.

In addition, the prior art requires a bracket to be fixed to the support and the wind tower to support the bus bar, and the number and installation cost of the installation parts, such as wrapping the bus bar with a separate insulating member, as well as a fixed size of the bracket Since it is pre-fabricated, the size must be adjusted for each bracket according to the radius of curvature of the installed wind tower, and if a design error occurs between the tower wall and the bracket, there is a problem of having to manufacture the bracket again.

In addition, the prior art consisting of the fixed load portion and the elastic load portion has the disadvantage of being vulnerable to vibration in the long run due to repeated damage due to fatigue life of the installation site due to the up, down, left and right vibration of the wind tower.

The invention disclosed in this application consists of the following structures in order to solve the said subject. According to an aspect of the present invention, in a bus bar support structure comprising a support for supporting a plurality of penetrating bus bar spaced apart at regular intervals, the support is made of an elastic insulating material and directly by the fixing means and the surface of the installation structure The contact surface of the support body, which is installed to be in contact with the surface of the mounting structure, is formed in correspondence with the shape of the surface of the mounting structure, and the support body includes a plurality of incision surfaces surrounding a part of an outer surface of each of the plurality of bus bars. And a through hole formed at one end and the other end of each of the upper and lower parts, and a lower part having a plurality of incision surfaces surrounding the other side of the outer surface of each of the plurality of bus bars. A busbar support structure is provided that penetrates and is inserted into the installation structure.

On the other hand, according to another aspect of the present invention, in the bus bar support structure comprising a support for supporting a plurality of penetrating busbars spaced apart at regular intervals, the busbar support structure is a support made of elastic insulating material, one end of the support A first hanger having a first loading portion to be loaded and a first contact portion in contact with the mounting structure, and a second hanger having a second loading portion in contact with the other loading portion and the mounting structure at which the other end of the support is mounted; A bus bar support structure is provided, wherein one end of the support is loaded on the first loading portion via at least one first spring, and the other end of the support is loaded on the second loading portion via the at least one second spring. do.

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Further, the first loading portion is coupled with the first contact portion in the vertical direction in the horizontal direction, the second loading portion is provided with a bus bar support structure coupled with the second contact portion in the vertical direction in the horizontal direction.

In addition, one end of the support and the first loading portion is coupled by at least one first connecting means penetrating the first spring, and the other end and the second loading portion of the support is coupled by at least one second connecting means penetrating the second spring. In addition, a bus bar supporting structure is provided in which the first and second contact portions move horizontally as the first and second loading portions pivot about the first and second connecting means.

In addition, the first spring and the second spring is composed of a spiral first spiral spring and a second spiral spring, the first connecting means, at least one first insertion hole formed in one end of the support, the inside of the first spiral spring And at least one first 'insertion hole formed in the first loading part, and the second connecting means includes at least one second insertion hole formed in the other end of the support, the inside of the second spiral spring and the second loading part. A bus bar passing through the formed at least one second 'insertion hole, the first loading portion being coupled to the first contact portion in the horizontal direction and the vertical direction, and the second loading portion being coupled to the second contact portion in the vertical direction in the horizontal direction A support structure is provided.

In addition, the insulating material is provided with a busbar support structure made of any one of PPO, PBT, PC, SMC, BMC, PA66, Epoxy, bakelite, urethane, MC Nylon, Teflon, Engineering plastic.

In addition, a busbar support structure is provided in which the elastic force of the insulating material is 30% or less.

The support also includes an upper portion with a plurality of incisions surrounding some of the outer surfaces of each of the plurality of busbars, and a lower portion with a plurality of incisions surrounding the remaining surface other than some of the outer surfaces of each of the plurality of busbars. A busbar support structure is provided.

On the other hand, according to another aspect of the present invention, there is provided a wind tower provided with a bus bar support structure.

According to the present invention, it is possible to obtain a bus bar supporting structure having an excellent earthquake resistance and load resistance by increasing the contact area with the installation structure.

In addition, it can cope with various surface shapes of the installation structure, preventing design errors and re-manufacturing according to the surface shape of the installation structure, and obtain a bus bar support structure that can support the bus bar in an insulated state without a separate member. have.

In addition, even if the deformation proceeds by the load of the support, it is possible to prevent the support structure from exceeding the elastic limit.

In addition, since the support is made of an elastic insulating material, it is possible to facilitate the absorption and insulation of mechanical external force without additional means.

Hereinafter, an embodiment according to the present invention will be described with reference to the accompanying drawings.

(Embodiment 1)

1 is a view showing a bus bar support structure 1 according to a first embodiment of the present invention. As shown in FIG. 1, the busbar support structure 1 has three circular openings 13 therein and three circular busbars I are provided in each of the openings 13 so that the busbars are fixed. The support 10 supporting the spaced apart is made of a structure directly installed on the inner wall of the wind tower.

In this case, the support 10 has a part 11 of the outer surface of the busbars I, for example, an upper portion 11 with three rounded cuts respectively surrounding the top surface of the busbars, and the rest of the outer surface of the busbars. A face, for example a bottom 12 having three rounded cuts surrounding the bottom of the busbars may be combined.

Accordingly, the upper rounded cutting surfaces and the lower rounded cutting surfaces are combined to form a plurality of circular openings 13, and the bus bars I are provided in the circular openings 13 so that the plurality of busbars are spaced at regular intervals. It can be supported.

In this case, through holes (not shown) are provided at one end and the other end of the upper part 11 and the lower part 12 of the support, respectively, and the upper part 11 of the support is inserted through the anchor 20 through the through hole. And lower portion 12 is coupled and further support 10 may be installed directly on the inner wall of the wind tower.

On the other hand, although a circular busbar is used in this embodiment, when a busbar of a different shape is used, the cut surface of the upper portion of the support and the cut surface of the lower portion are changed according to the shape of the busbar, not rounded, so that the entire busbar outer surface is changed. It can be formed to wrap.

In addition, in the present embodiment, the number of busbars is three, but the number of busbars may be added or subtracted as necessary. In this case, cut surfaces and openings formed on the upper and lower portions of the support according to the number of busbars. Of course, the number of can be increased or decreased.

In addition, the support is made of an insulating material having elasticity, in order to absorb the short-circuit strength and mechanical external force, the elastic force should be 30% or less, and the insulating material is preferably PPO, PBT, PC, SMC, BMC, PA66, Epoxy, Bakelite, urethane, MC Nylon, Teflon. In particular, products of the engineering plastic series are more preferable because they are light and have excellent insulation performance. In addition, the strength of the insulating material may be changed depending on the load of the bus bar and the value of the fault current generated during short circuit and ground fault.

On the other hand, the contact surface (R) of the support in contact with the wind tower has a corresponding relationship with the surface of the wind tower in consideration of the shape of the surface of the wind tower. That is, when considering that the wind tower is usually cylindrical, the contact surface (R) of the support has a convex rounded shape so as to be in airtight contact with the inner wall surface of the concave wind tower.

As described above, according to the above embodiment, since the support is installed as a fixed anchor directly on the inner wall of the wind tower, no additional means such as the bracket of the prior art is needed for the support of the busbar and the installation to the wind tower. Since the support is made of an elastic insulating material, no separate means for insulating the busbars and absorbing vibrations is not required.

In addition, since the contact surface of the support has a shape that is in airtight contact with the inner wall surface of the wind tower, the support area is increased in contact with the inner wall of the wind tower and can evenly distribute the external force generated in the wind tower excellent load resistance and Seismic resistance can be secured.

(Second Embodiment)

2 is a view showing a bus bar support structure according to a second embodiment of the present invention. As shown in FIG. 2, according to the second embodiment, the bus bar support structure 2 includes a first hanger 30 and a second hanger 30 ′ installed on the inner wall of the wind tower. It is a structure that supports one end and the other end, respectively.

The support 10 is, as in the first embodiment, an upper surface 11 with rounded cutting surfaces, each of which covers a part of the outer surface of the busbars, for example, the upper surface of the busbars, and the remaining of the outer surface of the busbars. A face 12, for example, a lower part 12 having rounded cutting faces surrounding the bottom of the bus bars may be coupled to the fastening member 14. Accordingly, the cut surfaces of the upper portion 11 and the cut surfaces of the lower portion 12 are combined to form a plurality of circular openings 13, thereby covering and supporting the entire outer surface of the plurality of bus bars.

Also in this case, although the circular busbar was used in this embodiment, when busbars of different shapes are used, the cut surface of the upper portion of the support and the cut surface of the lower portion are not rounded, but change according to the shape of the busbar, and thus the outer surface of the busbar. Of course, it can be formed to wrap the whole.

In addition, in the present embodiment, the number of busbars is three, but the number of busbars may be added or subtracted as necessary. In this case, cut surfaces and openings formed on the upper and lower portions of the support according to the number of busbars. Of course, the number of can be increased or decreased.

In addition, the support is made of an insulating material having elasticity, the elastic force should be 30% or less for the absorption of short-circuit strength and mechanical external force, preferably as PSO, PBT, PC, SMC, BMC, PA66, Epoxy, Bakelite, urethane, MC Nylon, Teflon. In particular, products of the engineering plastic series are more preferable because they are light and have excellent insulation performance. In addition, the strength of the insulating material may be changed depending on the load of the bus bar and the value of the fault current generated during short circuit and ground fault.

On the other hand, the first hanger 30 is a horizontal first loading portion 31 on which one end of the support 10 is mounted, and the first contact portion 32 in the vertical direction which is coupled with the first loading portion and in contact with the installation structure. ).

In addition, the second hanger 30 ′ has a horizontal second loading portion 31 ′ on which the other end of the support 10 is mounted, and a second contact portion in the vertical direction which is coupled with the second loading portion and contacts the installation structure. 32 '.

The first loading portion 31 in the horizontal direction, the first contact portion 32 in the vertical direction, and the second loading portion 31 'in the horizontal direction and the second contact portion 32' in the vertical direction are generally mutually different. Although coupled to form a right angle, of course, the angle can be adjusted according to the shape of the inner wall of the wind tower is installed.

The first hanger 30 and the second hanger 30 ′ are secured by an installation member (not shown) such that the inner wall of the wind tower, the first contact portion 32 and the second contact portion 32 ′ respectively contact each other. Can be fixed.

In addition, in this embodiment, the first hanger and the second hanger are each formed at one end and the other end of the support, but if necessary, the number of hangers supporting one end and the other end can be increased or decreased, and the support is a fixing means such as an anchor. Can be installed on the inner wall of the hanger and wind tower.

As described above, according to the second embodiment, unlike the conventional bracket, since the support is loaded on a hanger (loading part) which is easy to manufacture and install along the curved surface of the inner wall of the wind tower, The busbar supporting structure of this embodiment can be applied regardless of the diameter, and since the support is made of an insulating material, there is no need to cover the outer surface of the busbar with insulating tape or wrap it with an insulating tube.

In addition, while the support is loaded on the loading portion of the hanger, while the contact area of the hanger increases the contact area with the inner wall of the wind tower, a bus bar supporting structure having high stability and excellent load resistance can be obtained.

(Third Embodiment)

3 is a view showing a bus bar support structure according to a third embodiment of the present invention. As shown in FIG. 3, according to the third embodiment, the bus bar support structure 3 includes a first spiral spring 50 and a second spiral spring 50 ′ having a first spiral spring 50 and a second spiral shape. One end and the other end of the support body 10 are supported through two springs 50 '.

The support 10 has, as in the first embodiment, a top 11 with rounded cuts, each of which covers a part of the outer surface of the busbars I, for example the top of the busbars, and the busbars. The lower surface 12 having rounded cutting surfaces surrounding the lower surface of the outer surface, for example, the busbars, may be coupled to the fastening member 14. Therefore, the upper cut surfaces and the lower cut surfaces are combined to form a plurality of circular openings 13, thereby covering and supporting the entire outer surface of the plurality of bus bars.

Also in this case, although a circular busbar was used in this embodiment, when busbars of different shapes are used, the cut surface of the upper portion of the support and the cut surface of the lower portion are changed according to the shape of the busbar, not rounded, so that the busbar outer surface Of course, it can be formed to wrap the whole.

In addition, in the present embodiment, the number of busbars is three, but the number of busbars may be added or subtracted as necessary. In this case, cut surfaces and openings formed on the upper and lower portions of the support according to the number of busbars. Of course, the number of can be increased or decreased.

In addition, the support is made of an insulating material having elasticity, the elastic force should be 30% or less for the absorption of short-circuit strength and mechanical external force, preferably as PSO, PBT, PC, SMC, BMC, PA66, Epoxy, Bakelite, urethane, MC Nylon, Teflon. In particular, products of the engineering plastic series are more preferable because they are light and have excellent insulation performance. In addition, the strength of the insulating material may be changed depending on the load of the bus bar and the value of the fault current generated during short circuit and ground fault.

On the other hand, the first hanger 40 has a horizontal first loading portion 41 on which the support is mounted and a first contact portion 42 in the vertical direction that is coupled to the first loading portion and in contact with the installation structure.

In addition, the second hanger 40 'is provided with a second loading portion 41' in the horizontal direction in which the support is loaded and a second contacting portion 42 'in the vertical direction which is coupled to the second loading portion and is in contact with the installation structure. Equipped.

The first loading portion 41 in the horizontal direction of the first hanger 40 and the first contact portion 42 in the vertical direction, and the second loading portion 41 'in the horizontal direction of the second hanger 40'. The second contact portion 42 ′ in the vertical direction is generally coupled to form a right angle α to each other, but the angle may be adjusted according to the shape of the inner wall of the wind tower to be installed.

In addition, as a coupling configuration of the support 10 and the first hanger 40, a spiral spring 50 is provided between the support 10 and the first loading portion 41 of the first hanger 40, the connecting means The 60 is coupled to each other by being fastened through the support 10, the interior of the first spiral spring 50, and the first loading portion 41.

That is, in this embodiment, as shown in FIG. 3, a first insertion hole (not shown) and a first portion of a corresponding portion are respectively provided at one end of the upper portion 11 of the support and the lower portion 12 of the support. A first 'insertion hole (not shown) is provided in the loading portion 41, respectively, and the first insertion hole formed in the upper portion 11 of the support, the inside of the first spiral spring 50, and the first loading portion 41 are provided. The bolts to penetrate the first 'insertion hole of the first insertion hole, the first insertion hole formed in the lower portion 12 of the support body, the interior of the first spiral spring 50 and the first' insertion hole of the first loading portion 41, respectively. The support body 10 and the 1st hanger 40 are engaged by fastening the nut 62 after insertion. On the other hand, the washer 63 may be interposed between the head 61 of the bolt and the support 10.

In this case, since the connecting means 60 is inserted through the first insertion hole and the first 'insertion hole to be coupled with the support 1 and the first loading part 41, the first contact portion 42 is the installation structure. Until it is installed in the first insertion hole and the first 'insertion hole and the gap between the connecting means, the first loading portion 41 can pivot around the connecting means 60, the first loading As the portion 41 pivots, the first contact portion 42 coupled to be perpendicular to the first loading portion 41 in the horizontal direction may move in the horizontal direction β.

On the other hand, the coupling structure of the support body 10 and the 2nd hanger 40 'has a 2nd insertion hole (not shown) and the other in the other end of the upper part 11 of the support body 10, and the lower part 12 of a support body, respectively, It is the same as the above-mentioned coupling structure of the support body 10 and the 1st hanger 40 except that a 2 'insertion hole (not shown) is each provided in the 2nd loading part 41' of the corresponding location, Since the movement of the second loading portion 41 'and the second contact portion 42' is also the same as the movement of the first loading portion 41 and the first contact portion 42, the detailed description thereof will be omitted. do.

In addition, in this embodiment, the spiral spring is provided on the upper and lower portions of the support, respectively, the upper portion, the spiral spring, the loading portion of the support, and the lower portion, the spiral spring, the loading portion of the support, respectively, but the connection means is made through, but required As a result, the number of spiral springs and connecting pins may increase or decrease. In addition, although the bolt and the nut have been described as an example of the connecting means, the present invention is not limited thereto.

As described above, according to this embodiment, the helical spring is interposed between the support and the mounting portion of the hanger, so as not only to absorb the shock caused by the vibration or shaking of the wind tower, thereby improving the shock resistance, but also the support and the loading portion are helical springs. By interfering with, it is possible to prevent the helical spring from being deformed beyond the elastic limit even when the deformation proceeds by the load.

In addition, unlike the conventional bracket, since the support is loaded on a hanger (loading part) which is easy to manufacture and install along the curved surface of the inner wall of the wind tower, the bus bar supporting structure of this embodiment irrespective of the diameter of the wind tower. It is possible to apply, and since the support is made of an insulating material, there is no need to cover the outer surface of the bus bar with insulating tape or wrap with an insulating tube.

In addition, while the support is loaded on the loading portion of the hanger, while the contact area of the hanger increases the contact area with the inner wall of the wind tower, a bus bar supporting structure having high stability and excellent load resistance can be obtained.

Meanwhile, the bus bar support structures according to the first, second, and third embodiments described above may be installed on the inner wall of the wind tower only by the bus bar support structures according to the embodiments, and all of the embodiments together include the wind tower inner wall. It can also be installed in.

4 is a view showing an example in which the bus bar support structure according to the first, second, third embodiment is applied together to the inner wall of the wind tower, according to Figure 4, the bus bar support structure of the bus bar placed on the inner wall of the wind tower In providing the bus bar support structure 2 according to the second embodiment in the standing portion A of the bus bar, the bus bar support structure 1 according to the first embodiment in the central portion B of the bus bar. The busbar support structure 3 according to the third embodiment is provided in combination with the end portion C of the busbar.

On the other hand, the embodiment of the present invention is disclosed only for the case of being applied to the inner wall of the wind tower, the present invention is to support the bus bar while maintaining the seismic resistance and load resistance to a structure with a lot of vibration or vibration, such as a wind tower Can be applied.

In addition, while the present invention has been described in connection with the above-described preferred embodiments, it is possible to make various modifications or changes without departing from the spirit and scope of the invention.

1 is a view showing a bus bar support structure according to a first embodiment of the present invention.

2 is a view showing a bus bar support structure according to a second embodiment of the present invention.

3 is a view showing a bus bar support structure according to a third embodiment of the present invention.

4 is a view showing that the bus bar support structures according to the first, second and third embodiments are installed together on the inner wall of the wind tower.

5 is a view showing a bus bar loading structure according to the prior art.

* Description of the symbols for the main parts of the drawings *

1, 2, 3: busbar support structure 10: support

11: upper part 12: lower part

13 opening 14 fastening member

20: anchor 30, 40: first hanger

30 ', 40': Second hangers 31, 41: First loading department

31 ', 41': 2nd loading part 32, 42: 1st contact part

32 ', 42': 2nd contact part 60, 60 ': 1st, 2nd connection means

61: head of the bolt 62: nut

63: washer I: busbar

R: Fold A: Granular part

B: Center C: End

Claims (11)

In the bus bar support structure comprising a support for supporting a plurality of passing through the bus bar at a predetermined interval, The support is made of elastic insulating material and is installed to be in direct contact with the surface of the installation structure by fixing means. The shape of the contact surface of the support body in contact with the surface of the installation structure is formed corresponding to the shape of the surface of the installation structure, The support, An upper portion having a plurality of incisions surrounding the upper surface of each of the plurality of busbars, A lower portion having a plurality of incisions surrounding the lower surface of each outer surface of the plurality of busbars, and Through holes formed in one end and the other end of the upper and lower, respectively, Including, The fixing means is a bus bar support structure is inserted into the installation structure through the through hole. In the bus bar support structure comprising a support for supporting a plurality of passing through the bus bar at a predetermined interval, the bus bar support structure, Support made of elastic insulating material, A first hanger having a first loading portion on which one end of the support is mounted and a first contact portion in contact with the installation structure; and And a second hanger having a second loading portion on which the other end of the support is loaded and a second contact portion in contact with the installation structure. One end of the support is mounted on the first loading portion via at least one first spring, The other end of the support is a bus bar support structure that is mounted to the second loading portion via at least one second spring. delete delete 3. The busbar supporting structure as claimed in claim 2, wherein the first loading portion is coupled with the first contact portion in a vertical direction in a horizontal direction, and the second loading portion is coupled with the second contact portion in a vertical direction in a horizontal direction. 3. The method of claim 2, One end of the support and the first loading portion is coupled by at least one first connecting means penetrating the first spring, The other end of the support and the second loading portion are coupled by at least one second connecting means penetrating the second spring, And the first and second contact portions move in a horizontal direction as the first and second loading portions pivot about the first and second connecting means. The method of claim 6, The first spring and the second spring is composed of a spiral first spiral spring and a second spiral spring, The first connecting means penetrates at least one first insertion hole formed at one end of the support, at least one first 'insertion hole formed in the first spiral spring and the first loading part, The second connecting means passes through at least one second insertion hole formed at the other end of the support, at least one second 'insertion hole formed in the second spiral spring and the second loading part, The first loading portion is coupled to the first contact portion in the vertical direction in the horizontal direction, the second loading portion is a bus bar support structure coupled to the second contact portion in the vertical direction in the horizontal direction. The method of claim 1, 2, 5 to 7, wherein the insulating material is PPO, PBT, PC, SMC, BMC, PA66, Epoxy, bakelite, urethane, MC Nylon, Teflon, Engineering plastic Busbar support structure consisting of any one of. 8. The busbar support structure according to any one of claims 1, 2 and 5 to 7, wherein the elastic force of the insulating material is 30% or less. 8. An outer surface according to any one of claims 2, 6 or 7, wherein the support has an upper surface having a plurality of incisions surrounding an upper surface of an outer surface of each of the plurality of busbars, and an outer surface of each of the plurality of busbars. A busbar support structure comprising a lower portion having a plurality of incisions surrounding a lower surface thereof. A wind tower provided with a bus bar support structure according to any one of claims 1, 2, 5 and 7.

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