JP7131644B2 - Panel cooling structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a board cooling structure that can accommodate stationary induction devices such as transformers and reactors that are applied to various electric power facilities.

Stationary induction devices such as transformers and reactors applied to electric power equipment and the like are housed in a board having a housing-like board main body so that they can be put in and taken out freely. Since the inside of the board body may become hot depending on the operating state of the stationary induction device, it is preferable to properly cool the board body, for example, by sucking air from the outside of the board.

In Patent Document 1, it is provided on the bottom side of the board in the board body so as to extend in the direction in which the stationary induction device is put in and taken out (for example, the direction between the front part of the board provided with the opening and closing door and the back part of the board). a pair of support rails, and a wheel portion (in FIG. 1, which will be described later, can roll along the support rails) that can move while being guided by the pair of support rails while the stationary induction device is supported on the pair of support rails. A containment structure is disclosed having a wheel assembly with four possible wheels.

Further, in Patent Documents 1 and 2, an intake port provided in a side part of the board (for example, a front part of the board provided with an opening and closing door, etc.) and a static induction device in a state accommodated in the main body of the board. A duct made of a partition wall or the like (for example, a duct indicated by reference numerals 7 and 8 in FIG. 1 in Patent Document 1, and a reference numeral 7 in FIG. , 7a) is disclosed (hereinafter referred to as a conventional cooling structure as appropriate).

JP 2008-277482 A JP 2006-166643 A

In order to provide electric shock suppression in a board having a conventional cooling structure, for example, a protective cover (for example, an insulating material, etc.) is placed between the board side part of the board body and the stationary induction device so as to separate the two. A method of interposing a protective cover or the like having an electric shock suppressing action) is exemplified.

However, it is difficult to provide a protective cover in the air intake side region of the conventional cooling structure because a duct is provided by a partition wall or the like. Even if a protective cover could be provided, there is a possibility that the board body will become complicated and large, and the cooling performance will be hindered due to an increase in pressure loss.

As a technique that does not apply a protective cover, there is a technique that applies a board body made of a non-conductive material.

Therefore, it has been difficult to obtain desired cooling properties and electric shock suppression properties in the board.

SUMMARY OF THE INVENTION The present invention has been made in view of such technical problems, and an object of the present invention is to provide a technique that can contribute to the cooling performance of the board and the suppression of electric shock.

The board cooling structure according to the present invention can contribute to solving the above-described problems, and one aspect of the board cooling structure is that the stationary induction device can be accommodated so that it can be taken in and out from the board side part side of the board body in the form of a housing. In the board cooling structure, the board body includes a pair of support rails extending in the loading and unloading direction on the bottom side of the board inside the board body, and a pair of support rails each extending in the loading and unloading direction. A wheel portion having a pair of rolling wheels and capable of moving by being guided by the pair of support rails while supporting the stationary induction device; A suction port provided on one side of the board that is the side of the board and communicating with the inside of the board main body; a protective cover interposed between the board body and dividing the inside of the board body into an air intake side space and a standstill induction device side space; and a standstill induction device side space provided on the board ceiling of the board body and a communicating exhaust port. The pair of support rails includes a hollow portion extending in the loading/unloading direction on the support rail axis side, and the hollow portion provided on the side of the intake port side space portion on the outer surface of the pair of support rails. and a stationary induction device side through hole provided on the side of the stationary induction device side space portion of the pair of support rail outer surfaces and communicating with the hollow portion. It is characterized by

Another aspect of the present invention is a board cooling structure capable of accommodating a stationary induction device from a board side part side of a housing-shaped board body, wherein the board body is located on the board bottom side inside the board body. a pair of support rails extending in the loading and unloading direction; a covering portion covering a gauge space between the pair of support rails; A wheel portion having wheels and capable of moving by being guided by the pair of support rails while supporting the stationary induction device; An intake port provided in a side portion and communicating with the inside of the board main body, and interposed between the stationary induction device and the one side portion of the board in a state where the stationary induction device is housed in the said board body. , a protective cover that divides the inside of the board main body into an air intake side space and a static induction device side space; It has a mouth and The covering portion includes an air inlet side through hole provided on the outer surface of the covering portion on the side of the air inlet side space portion and communicating with the gauge space portion, and a stationary induction device side space on the outer surface of the covering portion. and a stationary induction device side through hole that is provided on the track side and communicates with the track space.

In the one aspect, the air intake is provided at a position facing the pair of support rails on one side of the board, and the air intake side through hole is an air intake side space on the outer side surface of the pair of support rails. It may be provided at a position facing the air inlet on the part side.

In the other aspect, the intake port is provided at a position facing the gauge space portion on the one side portion of the board, and the intake port side through hole is provided in the intake port side space of the outer surface of the covering portion. It may be provided at a position facing the air inlet on the part side.

In the above aspect, the intake port-side through hole and the stationary induction device-side through hole may be provided on the outer surface of the support rail other than the track surface of the wheel.

Further, the one side portion of the board may be provided with an opening/closing door, and the intake port may be provided in the opening/closing door.

Moreover, it is good also as the feature that the air filter is provided in the said intake port.

As described above, according to the present invention, it is possible to contribute to the cooling performance of the board and the suppression of electric shock.

FIG. 2 is a schematic configuration diagram for explaining the cooling structure of the board 10A according to the first embodiment; Schematic configuration diagram for explaining the cooling structure of the board 10A according to the first embodiment ((A) is a perspective view of the protective cover 6 with the board front part 11a removed, and (B) is a view of the inside with the board right side part 11c removed. ). Schematic configuration diagram for explaining the cooling structure of the board 10B according to the second embodiment ((A) is a diagram in which the front face part 11a of the board is removed and the inside is seen and the protection cover 6 is seen through, ). FIG. 11 is a schematic configuration diagram for explaining the cooling structure of the board 10C according to the third embodiment (when the intake port 31 is provided in the outer peripheral side portion 11ab); Schematic configuration diagram for explaining the cooling structure of the board 10A according to the third embodiment ((A) is a diagram in which the front face part 11a of the board is removed and the inside is seen and the protection cover 6 is seen through; ). FIG. 10 is a schematic configuration diagram for explaining the cooling structure of the board 10C according to the third embodiment (when the intake port 31 is provided in the opening/closing door 14); Schematic configuration diagrams for explaining modifications of the boards 10A to 10C ((A) to (C) are views of the inside with the left side surface 11d of the board removed).

The board cooling structure according to the embodiment of the present invention includes a pair of support rails provided on the bottom side of the board inside the board body and extending in the direction in which the stationary induction device is inserted and removed (hereinafter simply referred to as the device inlet and outlet direction). , and a protective cover that divides the inside of the board body into an air inlet side space and a static induction device side space.

In the case of the cooling structure of this embodiment, the side portions of the board body (the front face portion 11a, the back face portion 11b, the right side face 11c, and the left side face 11d of the board in FIG. 1 to be described later) of the equipment in the direction of entry and exit of the equipment On one side of the board (front face part 11a or rear face part 11b) of the board, an intake port communicating with the air intake side space in the board body is provided. Further, for example, in the panel ceiling, an exhaust port communicating with the stationary induction device side space in the panel body is provided.

Further, an intake port-side through hole and a stationary induction device-side through hole are provided on the outer surface of the pair of support rails so as to communicate with the hollow portion on the support rail axis side, or the gauge space between the pair of support rails. An intake port-side through hole and a stationary induction device-side through hole are provided on the outer side surface of the closing lid that closes the upper side of the part so as to communicate with the track space part.

For example, in the case of the conventional cooling structure, since a duct is provided by a partition wall or the like in the air intake side area in the panel body, it is difficult to provide a protective cover in the air intake side area.

In particular, when a plurality of board members (for example, board panels, columnar frames, brackets, partition plates, open/close doors, etc.) are assembled in a complicated manner in the board body, it is not possible to provide a protective cover. Even if this is the case, there is a risk that the board will become more complicated and the cost will increase, and the cooling performance and maintainability will be hindered.

On the other hand, according to the cooling structure using a pair of support rails and a protective cover as in the present embodiment, it is sufficiently possible to obtain the desired electric shock suppression property without using a non-conductive material, and the cost is reduced. There is also a possibility that various designs, etc. can be realized.

In addition, compared to the conventional cooling structure, the cooling structure is simplified and the pressure loss can be easily suppressed, so it is easy to obtain the desired cooling performance and maintainability, etc., and it is possible to contribute to the miniaturization of the panel. .

If the board can be cooled and the electric shock can be suppressed as in the present embodiment, the stationary induction device can be operated safely.

The cooling structure of the board of the present embodiment can be applied to various technical common sense in various fields (for example, the field of boards, the field of static induction equipment, Rail field, etc.) can be appropriately applied and modified, and examples thereof include those shown in the following Examples 1 to 3. It should be noted that, in the first to third embodiments, detailed descriptions are appropriately omitted by, for example, applying the same reference numerals to duplicate contents.

<<Example 1>>
Schematic diagrams of FIGS. 1 and 2 explain the cooling structure of the board 10A according to the first embodiment. This board 10A has a board body 1 formed by assembling a plurality of board members (for example, a board panel, a columnar frame, a bracket, etc.) into a housing. Then, from the board front part 11a, which is one of the board side parts (board front part 11a, board back part 11b, board right side part 11c, board left side part 11d) of the board main body 1, which is one side in the device entrance/exit direction, the stationary induction device 2 can be freely put in and taken out.

In addition, as shown in FIG. 2, in a state in which the stationary induction device 2 is housed in the board main body 1 (hereinafter simply referred to as a device housing state), the protective cover 6 is placed between the panel front surface portion 11a and the stationary induction device 2. can be detachably interposed, and the space 7 in the board body 1 can be divided into an air inlet side space 71 and a stationary induction device side space 72 .

The stationary induction device 2 has an iron core 2a made of, for example, a silicon steel plate or an amorphous magnetic material, and a winding 2b wound around the iron core 2a. It has a structure that can be accommodated in the main body 1 (a three-phase, three-legged structure in FIG. 2).

The board front part 11a of the board main body 1 is formed with an opening 14a shaped to allow the stationary induction device 2 to be put in and taken out, and an opening/closing door 14 capable of opening and closing the opening 14a is provided.

The opening/closing door 14 is provided with air intakes 31 (four air intakes 31 in FIG. 1) communicating with the air intake side space 71 in the panel body 1. In addition, the structure is such that the air outside the board main body 1 can be sucked into the board main body 1 .

An air filter 30 is provided in the intake port 31 (inside the board main body 1 of the intake port 31 in FIG. 2) for cleaning the air taken in from the intake port 31 (for example, removing dust in the air).

The board ceiling part 13 of the board main body 1 has an air outlet 32 (two air outlets 32 in FIG. 1) communicating with the stationary induction device side space part 72 in the board main body 1, and a ventilator 33 having a fan 33a. and are provided, and the structure is such that the air inside the board body 1 can be exhausted to the outside of the board body 1 .

On the board bottom 12 side in the board body 1, support rails 4a and 4b are provided so as to extend in the equipment ingress/egress direction (in FIG. 2, they are laid on the inner surface of the board bottom 12). The structure is such that the stationary induction device 2 can be supported via the wheel portion 5 placed on the rails 4a and 4b.

Each of the support rails 4a and 4b has a hollow portion 41 extending in the direction of entry and exit on the axial side. Intake-port-side through-holes 44 are provided so as to communicate with the hollow portion 41 on the side of the intake-port-side space portion 71 in the outer surfaces 40 of the support rails 4a and 4b. Further, a static induction device side through-hole 45 is provided so as to communicate with the hollow portion 41 on the side of the static induction device side space portion 72 in the outer surface 40 .

The wheel portion 5 has wheels 5a and 5b that roll in and out directions on the support rails 4a and 4b, respectively. It has a structure.

The board 10A shown above is not limited to the configuration shown in FIGS. 1 and 2, and can be designed and modified as appropriate.

For example, the opening/closing door 14 only needs to be able to open/close the opening 14a so that the stationary induction device 2 can be taken in and out, and various aspects can be applied as appropriate. Specific examples include a double-door structure as shown in FIG. 1 and a one-sided structure.

For convenience, the intake port 31 and the exhaust port 32 shown in FIG. 1 are drawn in a rectangular shape with dotted lines, but they communicate with the inside of the board body 1 so as not to hinder the movement of air. It is possible to apply various aspects as appropriate. A specific example is a mode in which one or more slit-shaped, circular, or rectangular holes are bored.

Further, the intake port 31 may be provided in the outer peripheral side portion 11ab of the opening/closing door 14 in the board front portion 11a. The air filter 30 may be provided inside the board body 1 at the intake port 31 or may be provided outside the board body 1 .

In addition, the support rails 4a and 4b can movably support the stationary induction device 2 via the wheel portion 5, and the air inlet side through hole 44 and the stationary induction device side through hole 45 are separated from each other via the hollow portion 41. Various modes can be appropriately applied as long as they are in communication with each other. As a specific example, as shown in FIG. 2, it is a tubular structure having a rectangular cross section and extending in the entry/exit direction. A mode in which the intake port side through hole 44 is open) and a mode in which a reinforcing frame 41a is provided on the axial center side are exemplified.

The air intake side through-hole 44 and stationary induction device side through-hole 45 shown in FIG. As long as it is in a mode in which the side surface 43 is provided, the side surface 43 may be provided as appropriate. As a specific example, it may be provided on the upper side surface 42 or the like, but it is preferable to provide it so as to avoid the track surface 46 formed by the wheels 5a and 5b. Further, the shape of the air inlet side through-hole 44 and the stationary induction device side through-hole 45 may include a mode in which one or more slit-like, circular, or rectangular holes are bored.

Further, the positions at which the exhaust port 32 and the stationary induction device side through hole 45 are provided can be appropriately set in consideration of efficient cooling of the stationary induction device 2 . In the case of FIG. 2, the exhaust port 32 is provided at a position facing the upper side of the stationary induction device 2 in the panel ceiling portion 13, and the stationary induction device side through-hole 45 is provided for the stationary induction device 2 in the support rails 4a and 4b. It is provided at a position facing the lower side.

2, the protective cover 6 is detachably interposed between the board front surface portion 11a and the stationary induction device 2 in the state in which the device is accommodated, and the space portion 7 is defined by the one-dotted chain line for the sake of convenience. Any mode that can be divided into the air inlet side space portion 71 and the stationary induction device side space portion 72 can be applied as appropriate. As a specific example, it is formed by molding an insulating material or the like into a flat plate shape, and as shown in FIG. A mode in which it can be interposed (removably interposed) can be mentioned. Moreover, in order not to interfere with the support rails 4a, 4b, etc., a notch 61 may be formed in the protective cover 6 on the board bottom 12 side.

Next, an example of cooling operation of the board 10A will be described with reference to FIG. First, when the inside of the panel main body 1 becomes negative pressure due to the operation of the ventilator 33, the air around the outside of the intake port 31 is sucked into the intake port side space 71 through the intake port 31 as indicated by the arrow y1. . The air sucked into the air inlet side space portion 71 moves to the hollow portion 41 through the air inlet side through hole 44 as indicated by an arrow y2.

The air in the hollow portion 41 moves to the stationary induction device side space portion 72 via the stationary induction device side through hole 45, and then rises along the stationary induction device 2 (outside the stationary induction device 2) as indicated by an arrow y3. It absorbs the heat of the stationary induction device 2 while rising along the side surface, the gap between the iron core 2a and the winding 2b, and the like. The air that has absorbed this heat is exhausted to the outside of the board 10A via the exhaust port 32 and the ventilator 33. As shown in FIG.

According to the board 10A of the first embodiment as described above, compared with the conventional cooling structure, the cooling structure is simplified, pressure loss can be easily suppressed, and desired cooling performance, electric shock suppression performance, maintenance performance, etc. can be achieved. It turns out that it is easy to obtain. Also, it can be seen that it is possible to contribute to miniaturization of the board, diversification of design, cost reduction, and the like.

<<Example 2>>
The schematic explanatory diagram of FIG. 3 explains the cooling structure of the board 10B according to the second embodiment. This board 10B is a suitable modification of the board 10A, and the main differences are that the support rails 4a and 4b are not provided with the intake port side through holes 44 and the stationary induction device side through holes 45, and The point is that the cover portion 8 is provided so as to cover the track space portion 83 between the support rails 4a and 4b.

The covering portion 8 is provided with an intake port side through hole 81 on the side of the intake port side space portion 71 on the outer surface 80 so as to communicate with the gauge space portion 83 . Further, a stationary induction device side through-hole 82 is provided on the outer surface 80 on the side of the stationary induction device side space portion 72 so as to communicate with the gauge space portion 83 .

In the covering portion 8, various structures may be used as long as they cover the gauge space portion 83 and communicate between the intake port side through hole 81 and the stationary induction device side through hole 82 via the gauge space portion 83. It is possible to appropriately apply the aspect of. For example, as shown in FIG. 3, when the side of the gauge space portion 83 in the equipment entrance/exit direction is covered with the board front portion 11a and the board back portion 11b, an aspect is applied in which the upper side of the gauge space portion 83 is blocked. do it. As a specific example, as shown in FIG. 3, it may have a flat plate shape extending in the direction between the support rails 4a and 4b and can be supported on the upper side surfaces 42 of the support rails 4a and 4b.

Further, the shape of the inlet side through-hole 81 and the stationary induction device side through-hole 82 may include a mode in which one or more slit-like, circular, or rectangular holes are bored.

In addition, in the covering portion 8, the same material (insulating material, etc.) as that of the protective cover 6 is applied, or the covering portion 8 is combined with the protective cover 6 to be integrated.

Next, an example of cooling operation of the board 10B will be described with reference to FIG. First, when the inside of the panel main body 1 becomes negative pressure due to the operation of the ventilator 33, the air around the outside of the intake port 31 is sucked into the intake port side space 71 through the intake port 31 as indicated by the arrow y1. . The air sucked into the air intake side space portion 71 moves to the track space portion 83 through the air intake side through hole 81 as indicated by an arrow y21.

After the air in the gauge space portion 83 moves to the stationary induction device side space portion 72 through the stationary induction device side through hole 82, the air rises along the stationary induction device 2 as indicated by an arrow y3 and moves toward the stationary induction device. Absorbs the heat of 2. The air that has absorbed this heat is exhausted to the outside of the board 10B via the exhaust port 32 and the ventilator 33 .

According to the board 10B of Example 2 as described above, in addition to the same effects as those of Example 1, the following can be said. That is, in the support rails 4a and 4b, since it is not necessary to provide the intake port side through hole 44 and the stationary induction device side through hole 45, the mechanical strength is increased, and the support rails 4a and 4b are miniaturized and designed more diversified. , and may contribute to cost reduction.

In addition, since the covering portion 8 does not require the mechanical strength of the support rails 4a and 4b, for example, the air intake side through-hole 81 and the stationary induction device side through-hole 82 can be made relatively large. Become. As a result, the pressure loss in the board body 1 can be suppressed, and the desired cooling performance and the like can be easily obtained.

<<Example 3>>
Schematic diagrams of FIGS. 4 to 6 explain the cooling structure of the board 10C according to the third embodiment. This board 10C has a configuration that is a suitable modification of the board 10A, and the main differences are that an intake port 31 is provided at a position facing the support rails 4a and 4b in the front face portion 11a of the board, and an outer surface 40 The point is that the air intake side through hole 44 is provided at a position facing the air intake 31 on the side of the air intake side space 71 .

In the case of the board 10C shown in FIG. 4, the lower side of the outer peripheral side part 11ab of the board front part 11a faces the support rails 4a and 4b, and the intake port 31 is provided at the facing position. Note that when the opening/closing door 14 has a relatively large shape and the lower side of the opening/closing door 14 faces the support rails 4a and 4b, as in the board 10C shown in FIG. should be set.

Next, an example of cooling operation of the board 10C will be described with reference to FIG. First, when the inside of the panel main body 1 becomes negative pressure due to the operation of the ventilator 33, the air around the outside of the intake port 31 flows into the hollow portion 41 through the intake port 31 and the through hole 44 on the intake port side as indicated by the arrow y11. is aspirated to

After the air in the hollow portion 41 moves to the stationary induction device side space portion 72 through the stationary induction device side through hole 45, the air moves upward along the stationary induction device 2 as indicated by an arrow y3. absorbs the heat of The air that has absorbed this heat is exhausted to the outside of the board 10C via the exhaust port 32 and the ventilator 33 .

According to the board 10C of Example 3 as described above, in addition to the same effects as those of Example 1, the following can be said. That is, since the movement path of the air sucked from the intake port 31 is shortened (the movement of the arrow y2 in FIG. 2 is omitted), the pressure loss in the panel body 1 can be suppressed, and the desired cooling performance can be easily obtained. I know.

Although the present invention has been described in detail only with respect to the specific examples described above, it is obvious to those skilled in the art that various modifications can be made within the scope of the technical idea of the present invention. It goes without saying that such changes and the like belong to the scope of claims.

For example, the board 10B can be appropriately modified in the same manner as in the third embodiment, and the intake port 31 is provided at a position facing the gauge space 83 in the board front part 11a (for example, the position of reference numeral 11ac in FIG. 4). Provided, the intake port on the outer surface 80 of the covering portion 8 (the outer surface 80 of the covering portion 8 on the side of the front surface portion 11a of the board in the state where the front surface portion 11a side of the gauge space portion 83 is covered by the covering portion 8) A configuration in which an air intake side through hole 81 is provided at a position facing the air inlet 31 may be employed. Even when the board 10B is appropriately modified in this way, it is possible to achieve the same effects as those of the third embodiment.

Further, in the boards 10A to 10C, as shown in FIGS. 7A to 7C, for example, the intake port 31 corresponds to the board back surface part 11b (that is, one side of the board which is one side in the equipment entrance/exit direction). ), and the protective cover 6 may be interposed between the panel front portion 11a and the stationary induction device 2. FIG. The configurations of FIGS. 7A to 7C can also achieve the same effects as those of Examples 1 to 3, respectively. In addition, since the stationary induction device 2 can be put in and taken out from the board front face portion 11a without making the protective cover 6 detachable, the cooling structure can be simplified, and the maintainability and the like can be easily obtained. be.

10A to 10C... Board 1... Board main body 11a to 11d... Board side parts (board front part, board back part, board right side part, board left side part)
DESCRIPTION OF SYMBOLS 12... Board bottom part 13... Board ceiling part 14... Opening-and-closing door 2... Stationary induction apparatus 31... Intake port 32... Exhaust port 4a, 4b... Support rail 40, 80... Outside surface 41... Hollow part 44, 81... Intake port side penetration Holes 45, 82 Stationary induction device side through hole 5 Wheel portion 5a, 5b Wheel 6 Protective cover 7 Space portion 71 Air inlet side space portion 72 Stationary induction device side space portion 8 Covering portion

Claims (4)

A board cooling structure capable of accommodating a stationary induction device in and out freely from the board side part side of a housing-shaped board body,
The board body is
a pair of support rails provided extending in the loading/unloading direction on the bottom side of the board within the board main body;
a covering portion covering the gauge space portion between the pair of support rails;
a wheel portion having a pair of wheels that roll in the direction of insertion and withdrawal on each of the pair of support rails, and capable of moving while being guided by the pair of support rails while supporting the stationary induction device;
an intake port provided on one side of the board, which is one side of the board main body in the loading/unloading direction, and communicating with the inside of the board main body;
In a state in which the stationary induction device is accommodated in the panel body, the stationary induction device is interposed between the stationary induction device and the one side portion of the panel, and the inside of the panel body is divided into an intake port side space portion and a stationary induction device side space portion. a protective cover that divides into
an exhaust port provided in the board ceiling part of the board main body and communicating with the stationary induction device side space part;
with
The covering part is
an air intake side through hole provided on the side of the air intake side space on the outer surface of the covering portion and communicating with the gauge space;
a stationary induction device side through hole provided on the outer surface of the covering portion on the side of the stationary induction device side space portion and communicating with the gauge space portion;
A cooling structure for a board, characterized by comprising: One side of the board in the gauge space is covered with the covering,
The intake port is provided at a position facing the track space on one side of the board,
2. The board cooling structure according to claim 1, wherein the intake port side through-hole is provided at a position facing the intake port on the one side of the board on the outer surface of the covering portion. One side of the board is provided with an opening and closing door,
3. The board cooling structure according to claim 1, wherein the intake port is provided in the opening/closing door. 4. The board cooling structure according to claim 1, wherein an air filter is provided at said intake port.

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