Power converter enclosure

Abstract

To provide a power converter housing capable of efficiently hoisting a housing.SOLUTION: A power converter housing comprises a body part in which a power converter is installed; and a roof attached to the body part, that is located above the body part. The body part comprises a fixing part whose suspension jig is fixed. The roof comprises an insertion part into which the suspension jig is inserted at a position corresponding to the fixing part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present embodiments generally relate to a housing for a power converter. [Background technology]

[0002] 2. Description of the Related Art There is known a power conversion device housing having a power conversion device mounted therein. Such a power conversion device housing may be installed, for example, outdoors. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2018 / 096677 Summary of the Invention [Problem to be solved by the invention]

[0004] The housing for the power conversion device is installed on site by a crane or the like with the power conversion device mounted thereon. In order to hoist the housing, the strength of the roof on which the wires are hung must be increased to withstand the weight, which may increase costs. It is also possible to transport and install the housing body and roof separately. However, in such a case, work to attach the roof to the body at the site is required, which may increase costs.

[0005] The present embodiment has been made in consideration of the above-mentioned problems, and has an object to provide a housing for a power conversion device that can be lifted efficiently. [Means for solving the problem]

[0006] This embodiment is a housing for a power conversion device, comprising a main body having a power conversion device mounted therein, and a roof located above the main body and attached to the main body, the main body having a fixing portion to which a hanging jig is fixed, and the roof having an insertion portion through which the hanging jig is inserted at a position corresponding to the fixing portion. Effect of the Invention

[0007] According to this embodiment, it is possible to provide a housing for a power conversion device that can be lifted efficiently. [Brief description of the drawings]

[0008] [Figure 1] 1 is a front view showing a state in which a housing for a power conversion device according to an embodiment is suspended. FIG. [Diagram 2] 2 is a perspective view of a main body of a housing as viewed obliquely from above. FIG. [Diagram 3] 2 is a cross-sectional view of the housing, the hanging jig, and the auxiliary member in FIG. 1, as viewed from the direction of the arrow AA. [Figure 4] FIG. [Diagram 5] 5 is a cross-sectional view of the housing in FIG. 4 as viewed from the direction of the arrow BB. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view showing a state in which a housing for a power converter according to an embodiment is suspended. FIG. 2 is a perspective view of the main body of the housing as viewed obliquely from above. FIG. 3 is a cross-sectional view of the housing, the hanging jig, and the auxiliary member in FIG. 1, as viewed from the direction of the arrow AA. FIG. 4 is a plan view of the housing as viewed from above. FIG. 5 is a cross-sectional view of the housing in FIG. 4 as viewed from the direction of the arrow BB.

[0010] 1, a housing 1 for a power converter (hereinafter, referred to as housing 1) includes a main body 10 and a roof 30. The housing 1 is installed on the ground G outdoors, for example.

[0011] In this specification, the terms "upper", "lower", "right" and "left" refer to upper, lower, right and left, respectively, based on a person standing in front of the housing 1 and looking at the housing 1. In this specification, the direction from the housing 1 to the person standing in front of the housing 1 is defined as the "front" direction, and the opposite direction is defined as the "rear" direction.

[0012] The main body 10 is formed in a box shape having an opening 10a at the top. A power conversion device 100 for converting and controlling electric power is mounted inside 10b of the main body 10.

[0013] The main body 10 has a door 12 on a side surface 10c. An operator can perform maintenance of the power conversion device 100 by opening and closing the door 12. The main body 10 also has an air intake 13 on the side surface.

[0014] The air intake 13 allows air to flow from the outside into the interior 10b of the main body 10. The air intake 13 is covered by a cover 14 that is open at the bottom. The cover 14 prevents rainwater and the like from entering the interior of the main body 10 through the air intake 13. The air that has flowed into the interior 10b of the main body 10 cools the power conversion device 100 and is exhausted from the upper opening 10a.

[0015] As shown in FIG. 2, the main body 10 has an upper surface 16. The upper surface 16 is located, for example, above the vertical middle portion of the main body 10 (preferably above the door 12). The upper surface 16 of the main body 10 has an upper step 16a, a lower step 16b, and a vertical wall 16c. A roof 30 is fixed to the upper surface 16 by, for example, bolts (not shown). The upper step 16a is the upper end of the main body 10, and its inside forms an opening 10a. As shown in FIG. 1, the upper surface 16 is located, for example, inside the roof 30.

[0016] The lower step portions 16b are formed at the four corners of the main body portion 10. The lower step portions 16b are flat surfaces one step lower than the upper step portions 16a. The lower step portions 16b extend from the side surfaces 10c of the main body portion 10 toward the inside 10b of the main body portion 10. That is, the top surface portion 16 is formed in a stepped shape by the upper step portions 16a and the lower step portions 16b.

[0017] The fixing portion 20 is provided on the upper surface portion 16 of the main body portion 10. Specifically, the fixing portion 20 is provided on the lower stage portion 16b. The fixing portion 20 is, for example, an internal thread drilled downward from the lower stage portion 16b. A male thread 54 of a hanging jig 50, which will be described later, is screwed into the fixing portion 20.

[0018] The standing wall portion 16c rises from the lower stage portion 16b toward the upper stage portion 16a. The standing wall portion 16c shields the inside 10b of the main body portion 10 from the lower stage portion 16b. As shown in FIG. 2, the standing wall portion 16c is formed in an L-shape. The standing wall portion 16c prevents rainwater or the like in the lower stage portion 16b from flowing over the upper stage portion 16a and entering the inside 10b of the main body portion 10.

[0019] The roof 30 is located above the main body 10 and attached to the main body 10. The roof 30 covers the opening 10a of the main body 10. The roof 30 is formed, for example, by combining a plurality of plate materials. As shown in FIG. 1, the roof 30 is formed in a box shape that is open downward.

[0020] As shown in Figures 1 and 4, the outer shape of the roof 30 is larger than the outer shape of the main body 10. As a result, air that flows into the interior 10b of the main body 10 from the air intake 13 is discharged to the outside from below the roof 30 through the opening 10a of the main body 10. For example, the upper surface 30a of the roof 30 is inclined in the left-right direction. As a result, the roof 30 prevents rainwater and the like from accumulating on the upper surface 30a.

[0021] The roof 30 has an insertion portion 32 at a position facing the fixed portion 20 of the main body 10 in the up-down direction. The insertion portion 32 penetrates between the upper surface 30a and the lower surface 30b of the roof 30 in the up-down direction. The insertion portion 32 is formed, for example, in a cylindrical shape. A shaft portion 52 of a hanging jig 50 described later is inserted into the insertion portion 32. In this case, the insertion portion 32 is formed to be larger than the outer shape of the shaft portion 52 of the hanging jig 50.

[0022] 3 and 5, the insertion portion 32 has a first protruding portion 32a that protrudes upward from the upper surface 30a of the roof 30. The insertion portion 32 also has a second protruding portion 32b that protrudes downward from the lower surface 30b of the roof 30. The lower stage 16b of the main body 10 is located below the insertion portion 32. Four insertion portions 32 are provided corresponding to the fixing portions 20 of the main body 10.

[0023] The hoisting jig 50 is used when hoisting the housing 1. As shown in Fig. 3, the hoisting jig 50 has a shaft portion 52, a male screw 54 provided at the lower end of the shaft portion 52, and a wire hook portion 56 provided at the upper end of the shaft portion 52. The shaft portion 52 is formed, for example, in a cylindrical shape.

[0024] When lifting the housing 1, the shaft portion 52 is inserted into a through-hole 62 of an auxiliary tool 60 (described later) and an insertion portion 32 of the roof 30, and the male screw 54 is screwed into the fixing portion 20 of the main body 10. As shown in Fig. 1, a wire 120 extending from a main hoisting hook 110 of a crane or the like (not shown) is hung on the wire hanging portion 56.

[0025] The auxiliary tool 60 is used when lifting the housing 1. As shown in Figs. 1 and 3, the auxiliary tool 60 is disposed above the roof 30. The auxiliary tool 60 is made of, for example, a metal frame, and has a through hole 62 that penetrates in the vertical direction at a position corresponding to the insertion part 32 of the roof 30. The through hole 62 is smaller than the inner diameter dimension of the insertion part 32 and larger than the outer diameter dimension of the lifting jig 50. The auxiliary tool 60 suppresses the movement of the upper end side of the shaft part 52 of the lifting jig 50 when the housing 1 is lifted.

[0026] The auxiliary tool 60 is hoisted, for example, by an auxiliary winding hook (not shown) of a crane. In this state, the shaft portion 52 of the hoisting jig 50 is inserted through the through hole 62 of the auxiliary tool 60 and the insertion portion 32 of the roof 30, and the male screw 54 is screwed into the fixing portion 20 of the main body 10. Next, the wire 120 extending from the main winding hook 110 is hung on the wire hanging portion 56 of the hoisting jig 50.

[0027] In this state, the main hoisting hook 110 and the auxiliary hoisting hook of the crane are hoisted, thereby lifting the housing 1. The power conversion device 100 is mounted inside the housing 1. When the housing 1 is suspended at four points in this state, the wire hanging parts 56 of the four lifting jigs 50 are pulled toward the center with the male screws 54 as fulcrums due to the weight of the housing 1 and the power conversion device 100.

[0028] Here, if the housing 1 is lifted without using the auxiliary tool 60, the shaft portion 52 of the lifting jig 50 pulled toward the center may tilt and come into contact with the insertion portion 32 of the roof 30, causing the insertion portion 32 to become deformed.

[0029] Therefore, in this example, by using the auxiliary tool 60, the shaft portion 52 of the hanging jig 50 pulled toward the center is held down by the inner surface of the through hole 62. When the housing 1 is lifted, the tensile stress components of the hanging jig 50 located diagonally are each directed toward the center. Therefore, the auxiliary tool 60 can suppress the movement of the hanging jig 50 without moving relative to the roof 30. As a result, the auxiliary tool 60 suppresses the movement of the hanging jig 50, and therefore the shaft portion 52 of the hanging jig 50 can be suppressed from contacting the insertion portion 32 of the roof 30.

[0030] The hoisting jig 50 may be rotatably fixed in the through hole 62 of the auxiliary tool 60. In such a case, since the hoisting jig 50 and the auxiliary tool 60 are integrated, the auxiliary tool 60 can suppress the movement of the hoisting jig 50 without lifting the auxiliary tool 60.

[0031] In this way, the housing 1 can be installed on-site by lifting the main body 10 and the roof 30 together with the power conversion device 100 mounted inside the main body 10 without reinforcing the roof 30. This can reduce the cost of the housing 1. Also, the weight of the roof 30 can be reduced. Furthermore, since there is no need to separate the main body 10 and the roof 30, the workability of installing the housing 1 can be improved.

[0032] Next, the waterproof structure of the housing 1 will be described.

[0033] When the housing 1 is installed at the site, the hanging jig 50 is removed from the fixed part 20. Then, as shown in Figs. 4 and 5, a lid part 70 is attached to the insertion part 32 of the roof 30. A seal member (not shown) is provided between the lid part 70 and the insertion part 32. This allows the lid part 70 to prevent rainwater from entering the insertion part 32.

[0034] Further, the insertion portion 32 has a first protruding portion 32a extending upward from the upper surface 30a of the roof 30. As a result, the first protruding portion 32a prevents rainwater or the like flowing over the upper surface 30a of the roof 30 from penetrating into the insertion portion 32.

[0035] Furthermore, the insertion portion 32 has a second protruding portion 32b that protrudes downward from the lower surface 30b of the roof 30. Even if rainwater penetrates into the inside of the insertion portion 32, the second protruding portion 32b prevents the rainwater from penetrating into the inside of the main body portion 10.

[0036] Specifically, the second protrusion 32b can prevent rainwater W from running down the underside 30b of the roof 30 and dripping from above the opening 10a into the interior 10b of the main body 10. As shown in Fig. 5, the second protrusion 32b protrudes downward from the underside 30b of the roof 30, and therefore the rainwater W can drip downward.

[0037] The rainwater W drips down to the lower stage 16b located below the insertion portion 32. The rainwater W dripping down to the lower stage 16b is prevented from penetrating into the interior 10b of the main body 10 by the standing wall portion 16c. The lower stage 16b may be inclined outward. This allows the rainwater W dripping down to the lower stage 16b to be efficiently diverted to the outside.

[0038] In this way, even if the roof 30 is provided with the insertion portion 32 for lifting, it is possible to prevent rainwater and the like from entering the interior 10b of the main body 10 after installation at the site.

[0039] In the above embodiment, the case where the upper surface portion 16 is formed in a stepped shape by the upper step portion 16a and the lower step portion 16b has been described as an example. However, the present invention is not limited to this, and for example, the upper surface portion does not have to be formed in a stepped shape. For example, the upper end (upper step portion 16a) of the main body portion 10 may have a flat portion on which the fixing portion 20 is provided.

[0040] Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included within the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims. In addition, the above-mentioned embodiments can be implemented in combination with each other. [Explanation of symbols]

[0041] 1 Case 10 Main body 10a opening 10b internal 10c side 12 Doors 13 Air Intake 14 Cover 16 Top part 16a Upper part 16b Lower section 16c Standing wall section 20 Fixed part 30 Roof 30a top surface 30b Bottom side 32 Insertion part 32a 1st protrusion 32b Second protrusion 50 Hanging jig 52 Shaft 54 Male thread 56 Wire hook 60 Assistive Devices 62 Through hole 70 Lid 100 Power conversion device 110 Main winding hook 120 Wire G ground W Rainwater

Claims

1. A main body in which a power conversion device is mounted; A roof located above the main body and attached to the main body; Equipped with The main body portion has a fixing portion to which a hanging jig is fixed, the roof has an insertion portion through which the hanging jig is inserted at a position corresponding to the fixing portion, The fixing portion is provided on an upper surface of the main body, The top surface of the main body is The upper part and A lower stage portion one step lower than the upper stage portion; having The fixing portion is a housing for a power conversion device provided in the lower portion.

2. A main body in which a power conversion device is mounted; A roof located above the main body and attached to the main body; Equipped with The main body portion has a fixing portion to which a hanging jig is fixed, The roof has an insertion portion through which the hanging jig is inserted at a position corresponding to the fixing portion, The insertion portion is a housing for a power conversion device that protrudes above an upper surface of the roof.

3. The power converter housing according to claim 2 , wherein the fixing portion is provided on an upper surface of the main body.

4. The top surface of the main body is The upper part and A lower stage portion one step lower than the upper stage portion; having The power converter housing according to claim 3 , wherein the fixing portion is provided on the lower portion.

5. The housing for a power converter according to claim 1 or 4, wherein the top surface portion has an upright wall portion rising from the lower portion toward the upper portion.

6. The insertion portion protrudes downward from the lower surface of the roof, The housing for a power converter according to claim 1 , wherein the lower portion is located below the insertion portion.

7. The housing for a power conversion device according to claim 1 , wherein the insertion portion protrudes upward from an upper surface of the roof.

Images