JP4839297B2 - Dry transformer device - Google Patents

Description

  The present invention relates to a dry transformer device in which a transformer body is housed in a protective case, and more particularly, to a configuration of a protective case having a ceiling member in which a plurality of members are combined in a plane.

  Conventionally, in a dry transformer device, the protective case in which the transformer body is housed is almost always assembled at the site where the device is installed. For this reason, the protective case is often divided into a plurality of members so that at least the ceiling member can be easily transported or assembled. FIGS. 8A and 8B are configuration examples of a conventional dry transformer device 1 ′, in which FIG. 8A is a top view and FIG. 8B is a front view. In FIG. 8, the dry transformer device 1 ′ includes a protective case 10 ′ in which the transformer main body 30 ′ is housed, a ceiling member 11 ′ that constitutes a ceiling part includes three flat ceiling members 11 a ′, 11b 'and 11c' are combined in a plane. The ceiling members 11a ′ and 11b ′ are coupled via coupling members 111a ′ and 111b ′, and the ceiling members 11b ′ and 11c ′ are coupled via coupling members 111c ′ and 111d ′. A joint 200a ′ of the coupling members 111a ′ and 111b ′ is formed at the coupling portion between the ceiling members 11a ′ and 11b ′, and the coupling members 111c ′ and 111d are formed at the coupling portion between the ceiling members 11b ′ and 11c ′. A “joint 200b” is formed. In addition, 301a ', 301b', 301c 'is a coil part of the transformer main body 30', and 302 'is a yoke part of the transformer main body 30'. FIG. 9 is a diagram illustrating a configuration of a cross section c′-c ′ of a joint portion between the ceiling members 11b ′ and 11c ′ of the ceiling portion of the protective case 10 ′ in the dry transformer device 1 ′. The coupling member 111c ′ is fixed to the ceiling member 11b ′ by a bolt 500b ′ and a nut 501b ′. The coupling member 111d ′ is fixed to the ceiling member 11c ′ by a bolt 500c ′ and a nut 501c ′, and further, the coupling member 111c. 'And the coupling member 111d' are fixed to each other by a bolt 500d 'and a nut 501d'. The seam 200b ′ is formed in the ± Z-axis direction between the coupling member 111c ′ and the coupling member 111d ′. The cross-sectional configuration of the joint between the ceiling members 11a ′ and 11b ′ is the same as this. In many cases, the dry transformer device 1 ′ having such a configuration is installed in a basement or the like together with an air conditioning duct or the like in a building.

  Moreover, as a conventional technique related to the present invention and described in the patent document, for example, described in Japanese Patent Laid-Open No. 10-313511 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2003-164020 (Patent Document 2). Technology has been developed. Japanese Patent Application Laid-Open No. 10-313511 describes a configuration in which a rainwater draining groove 117 is provided in the connecting portion 115 of each functional unit 101 to 104 in a high-voltage power receiving facility (paragraph 0039, FIG. 8). In Japanese Laid-Open Patent Publication No. 2003-164020, a hanging metal fitting 13 is fixed to an upper part of a transformer 9 housed in a main body case 10 via a fitting 12 in a closed outdoor transformer panel. A roof plate 17 is fixed to the lower portion of the roof plate, and a rail plate 20 having a U-shaped cross section is attached to the inner surface side of the roof plate 17 in an inclined state with the opening side facing upward, Even when rainwater or the like enters from the rail, a configuration is described in which the rainwater is received by the rail plate 20 and flows down to the inner surface of the main body case 10 so that it does not flow directly to the transformer 9. (Paragraph 032-0035, 5, 6).

Japanese Patent Laid-Open No. 10-313511 JP 2003-164020 A

  In the conventional dry type transformer device 1 ′, when water falls or accumulates on the ceiling member 11 ′ of the protective case 10 ′, the water is connected to the ceiling member 11a ′, 11b ′. Through the joint 200a 'of the joint members 111a' and 111b 'and the joint 200b' of the joint members 111c 'and 111d' at the joint between the ceiling members 11b 'and 11c'. As shown in FIG. 9, it enters the transformer main body 30 ′ as a water droplet 700. The dropped water flows into the coil portions 301a ′, 301b ′, 301c ′ and the yoke portion 302 ′ of the transformer main body 30 ′, and causes insulation deterioration of the coils and corrosion of each portion. Further, the water formed by dew condensation in the protective case 10 ′ is formed as water droplets 700 on the transformer main body 30 ′ from the lower ends of the coupling members 111a ′ and 111b ′ and the lower ends of the coupling members 111c ′ and 111d ′. The same applies to the case of falling.

  In addition, the technology described in Japanese Patent Laid-Open No. 10-313511 is provided with a rainwater draining groove 117 in the connecting portion 115 of each functional unit 101 to 104 of the high-voltage power receiving facility. The technique described in Japanese Patent Application Laid-Open No. 2003-164020 is not a technique for removing water that directly falls from the ceiling to the internal transformer or the like. In order to prevent rainwater or the like that has entered from the water from flowing directly into the transformer 9, and to prevent water falling from the joints of the plurality of ceiling members of the protective case from falling onto the transformer body. Is not a technology.

In view of the state of the prior art, the problem of the present invention is that in the dry transformer device, water that has entered the protective case from the joint of a plurality of ceiling members of the ceiling part of the protective case, It is to prevent water generated by condensation in the case from falling on the transformer body in the case.
An object of the present invention is to provide a dry-type transformer device that solves the above-mentioned problems and improves the deterioration of insulation of the coil and corrosion of each part.

In order to solve the above-mentioned problems, in the present invention, as a dry transformer device, a protective case, a ceiling member in which a plurality of members are combined in a plane to form a ceiling portion of the protective case, and the protective case A groove member that is attached to the ceiling member inside the case and forms a groove that collects the water falling from the joint of the plurality of members and guides the water to the outside of the protective case is provided. Then, as the member for the groove, within the protective casing disposed below the coupling portion, the bottom surface, a first groove member forming the first groove facing to said coupling portion, said In the protective case, the first groove member is coupled so as to intersect the first groove , and the bottom surface is positioned lower than the bottom surface of the first groove and on the outside of the protective case. And a second groove member that forms a second groove inclined downward, wherein the bottom surface of the first groove is inclined downward toward the second groove side. To do.

  According to the present invention, in the dry transformer device, water that has entered the protective case from the joint of the plurality of ceiling members of the protective case can be prevented from falling onto the transformer body. It becomes possible to improve the reliability of the apparatus by suppressing the deterioration of insulation of the coil of the main body and the progress of corrosion of each part.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 4 are configuration diagrams of a dry transformer device as a first embodiment of the present invention. FIG. 1 is a configuration diagram of a dry transformer device, FIG. 2 is a diagram showing a cross section of a coupling portion of a ceiling portion of a protective case and a first groove member in the dry transformer device of FIG. 1, and FIG. The figure which shows the cross section of the member for 2nd groove | channels of the protective case in the dry-type transformer apparatus of FIG. 1, FIG. 4: is another structural example of the coupling | bond part of the ceiling part of the protective case in the dry-type transformer apparatus of FIG. FIG. The first embodiment is an example in which the ceiling portion of the protective case is configured by connecting three ceiling members in a plane.

1A is a top view of a dry transformer device as a first embodiment, FIG. 1B is a front view, and FIG. 1C is a side view. In the figure, _{1 A} dry transformer device, 30 is a transformer main body, 10 _A is a protective case which protects accommodating the transformer main body 30, 11 _A are provided in the ceiling portion of the protective casing 10 _A ceiling member, 11a, 11b, 11c comprises three plate-shaped ceiling member constituting one of the ceiling member 11 _a is a plane coupled to each other, 12a, 12b can constitute the sides of the protective casing 10 _a Side members 21 a ₁ , 21 b ₁ , 21 c ₁ , 21 d ₁ , 22 are attached to the ceiling member 11 _A inside the protective case 10 _A , and collect the water falling on the transformer body side to collect the protective case 10. groove _member, 111a 1, 111b ₁ forming a groove for guiding the outside of _a, coupling members for coupling the ceiling member 11a, the _inter-11b, 111c 1, 111d ₁ time combined ceiling member 11b, and between 11c Coupling members, 200a ₁ is seam between coupling member 111a ₁ and the coupling member 111b _1, 200b ₁ is seam between coupling member 111c ₁ and the coupling member 111d _1, 301a, 301b, 301c is a transformer main body 30 The coil portion 302 is a yoke portion of the transformer body 30. The coupling members 111a ₁ and 111b ₁ form a coupling portion of the ceiling members 11a and 11b in the peripheral region of the seam 200a ₁ including the seam 200a ₁ , and the coupling members 111c ₁ and 111d ₁ form the seam 200b ₁ . ceiling member 11b in the peripheral region of the該合allowed eye 200b ₁ comprising, forming a coupling portion 11c. Groove members _21a 1, 21b _1, the coupling member 111a _1, ceiling via 111b ₁ member 11a in the protective casing 10 _A, attached to 11b, the ceiling member 11a, the lower i.e. seam junction of 11b was該合including 200a ₁ disposed below the peripheral region of the eye 200a _1, the first groove member for the bottom surface to form a first groove is opposed to the coupling portion, the groove member _21c 1, 21d ₁ is binding member 111c _1, the ceiling through 111d ₁ member 11b in the protective casing 10 _a, attached to 11c, the ceiling member 11b,該合allowed eye 200b includes a lower i.e. seam 200b ₁ of the coupling portion of 11c placed below the _first peripheral region, the first groove member forming the first groove and the bottom surface was facing the coupling portion, 22, on the protective casing 10 _a The first grooves formed by the first groove members 21a ₁ , 21b ₁ , 21c ₁ , 21d ₁ intersect each other at a right angle, and the bottom surface is lower than the bottom surface of the first groove. _A second groove that forms a second groove that is formed at a position (a position in the −Z-axis direction) and is inclined downward (−Z-axis direction) toward the outer side in the Y-axis direction of the protective case 10A. It is a member for use. 22f is a projection of the second groove member 22 protruding to the outside of the protective casing 10 _A. The first groove members 21 a ₁ , 21 b ₁ , 21 c ₁ , 21 d ₁ are arranged separately on both sides of the second groove member 22. That is, the first groove members 21 a ₁ and 21 c ₁ are on the −X axis direction side with respect to the second groove member 22, and the first groove members 21 b ₁ and 21 d ₁ are the second groove members 22. The first grooves in the four first groove members 21a ₁ , 21b ₁ , 21c ₁ , 21d ₁ are arranged on the X-axis direction side with respect to the second groove member 22 in the first second groove member 22. It is the structure couple | bonded on both sides of 2 groove | channels. Each of the first groove members 21a ₁ and 21c ₁ has a bottom surface that is inclined downward (−Z-axis direction) in the X-axis direction, and the Z-axis of the bottom surface at the coupling position with the second groove member 22. The height in the direction is the lowest, and the first groove members 21b ₁ and 21d ₁ have their respective bottom surfaces inclined downward (−Z axis direction) toward the −X axis direction, and the second groove member 22 The height of the bottom surface in the Z-axis direction is the lowest at the joint position. The inclined bottom surface of the second groove member 22 is in the Z-axis direction of the bottom surface of the first groove members 21a ₁ , 21c ₁ , 21b ₁ , 21d ₁ at the coupling position with the second groove member 22. It is formed at a position lower than the position.

In the configuration of FIG. 1, when water enters the protective case 10 _A from the joint 200 a ₁ of the coupling members 111 a ₁ and 111 b ₁ that are the coupling portions of the ceiling members 11 a and 11 b, the water It drops downward from the lower end of 200a ₁ , that is, from the lower ends of the coupling members 111a ₁ and 111b ₁ . The dropped water falls into the grooves (first grooves) of the first groove members 21a ₁ and 21b ₁ , flows through the grooves, and flows into the grooves (second grooves) of the second groove member 22. ) Flowed into the groove member 22 of the second water flow through the grooves in the Y-axis direction is guided to the outside of the protective casing 10 _A, it flows out from the protruding portion 22f. Similarly, the ceiling member 11b, the seam 200b ₁ of the coupling member 111c _1, 111d ₁ is a coupling portion 11c, when water penetrates into the protective casing 10 _A, the water is binding member 111c _1, 111d Drops downward (in the −Z-axis direction) from the lower end of ₁ . The dropped water falls into the grooves (first grooves) of the first groove members 21c ₁ and 21d ₁ , flows through the grooves, and flows into the second groove member 22. Flowed into the groove member 22 of the second water flow through the grooves in the Y-axis direction is guided to the outside of the protective casing 10 _A, it flows out from the protruding portion 22f. And seam 200a ₁ and the seam 200b water entering the protective casing 10 _A from ₁ other portion, of the water made by condensation in a protective casing 10 _A, coupling members 111a _1, the lower end of 111b ₁ The same applies to water that falls downward (in the −Z-axis direction) from the lower ends of the coupling members 111c ₁ and 111d ₁ .
Hereinafter, the same reference numerals as those in FIG. 1 are given to the components in FIG. 1 used in the description.

2 is a cross-sectional view taken along the c ₁ -c ₁ section of the first groove member 21 d ₁ , that is, the A portion (FIG. 1), in the protective case 10 _A of the dry transformer device 1 _A of FIG. FIG.
2, 112a ₁ and 112b ₁ are coupling members for coupling the first groove member 21d ₁ to the ceiling members 11b and 11c, 500a to 500e are bolts, 501b, 501c and 501d are nuts, and b ₁ is The bottom surface of the first groove member 21 d ₁ , b ₂ is the bottom surface of the second groove member 22. Coupling member 111c ₁ is fixed to the ceiling member 11b by bolts 500b and nuts 501b, the coupling member 111d ₁ is fixed to the ceiling member 11c by bolts 500c and nuts 501c, coupling member 111c ₁ and the coupling member 111d ₁ Bolts They are secured together by 500d and nuts 501d, to form a seam 200a _1. Further, the ceiling member 11b connecting member 112a _1, coupling member 112b ₁ on the ceiling member 11c, are secured by the respective welding, the coupling member 112a ₁ and the said coupling member 112b _1, the first groove member 21d ₁ Are fixed by bolts 500a and 500e. In coupling position of the first groove member 21d ₁ and second groove members 22, the bottom surface _{b 2} of the second groove member 22, the first Z-axis of the bottom _{b 1} of the groove member 21d ₁ It is formed at a position lower by a distance h ₁ than direction position. As a result, water that has entered from the joint 200b ₁ or the like and dropped downward from the lower ends of the coupling members 111c ₁ , 111d ₁ is received by the groove (first groove) of the first groove member 21d ₁ , Can be caused to flow into the groove (second groove) of the second groove member 22, and further, can be caused to flow through the groove and be guided to the outside of the protective case 10 </ b> _A. The same applies to the other first groove members 21a ₁ , 21b ₁ , 21c ₁ .

Figure 3 is a diagram showing a configuration of a _c 2 -c ₂ cross i.e. B section of the second groove member 22 of the protection case 10 _A in dry-type transformers apparatus _{1 A} in FIG. 1 (FIG. 1).
3, 113a ₁ and 113b ₁ are coupling members for coupling the second groove member 22 to the ceiling member 11c, and 500f and 500g are coupling members 113a ₁ and 113b ₁ for the second groove member 22. The bolts b ₁ are fixed to the bottom surface of the _first groove members 21 c ₁ and 21 d ₁ , and b ₂ is the bottom surface of the second groove member 22. The coupling members 113a ₁ and 113b ₁ are each fixed to the ceiling member 11c by welding. At the coupling position of the first groove members 21c ₁ , 21d ₁ and the second groove member 22, the bottom surface b ₂ of the second groove member 22 is in contact with the first groove members 21c ₁ , 21d ₁ . The bottom surface b ₁ is formed at a position lower than the position in the Z-axis direction by a distance h ₁ .

Figure 4 is a diagram showing another configuration example of the coupling portion of the ceiling portion of the protective casing 10 _A in dry-type transformers apparatus 1 _A in FIG. Compared to the configuration of the case of FIG. 2 fixed coupling member 111c ₁ comprises a part fixed to the ceiling member 11b by bolts 500b and nuts 501b, the coupling member 111d ₁ is a ceiling member 11c by bolts 500c and nuts 501c a moiety that is, the ceiling member 11b, the upper and lower both parts of the seam 200b ₁ of the coupling member 111c _1, 111d ₁ is a coupling portion 11c, to prevent the ingress of water into the interior of the protective case 10 _a These are different from each other in that seal members 600b, 600c, 600a, and 600d are provided. In this configuration, water that falls from the lower end of the protective casing 10 attached or condensation intrusion or or protective casing 10 _A in the _A member 111c _1, 111d ₁ downward, the first groove member It falls within the first groove of 21d _1. Dropped water flows through the first groove, it flows into the second groove of the second groove member 22 comes into 10 _A outside the protective casing and flows through the grooves of the second.

According to the dry transformer device _1A of the first embodiment, water that falls downward from the lower ends of the coupling members 111a ₁ and 111b _{1 and} the lower ends of the coupling members 111c ₁ and 111d ₁ is used for the first groove. collected by members _{21a 1, 21c 1, 21b 1} , 21d 1, it is possible to put out protective case 10 _a by the second groove member 22, it is prevented that these water according to the transformer main body 30 Moreover, it becomes possible to improve the insulation deterioration of the coils 301a, 301b, 301c of the transformer main body 30, deterioration due to corrosion of each part, etc., and the reliability of the dry transformer device _1A can be improved.

5 to 7 are block diagrams of a dry transformer device as a second embodiment of the present invention. FIG. 5 is a configuration diagram of the dry transformer device, FIG. 6 is a diagram showing a cross section of the coupling portion of the ceiling portion of the protective case and the first groove member in the dry transformer device of FIG. 5, and FIG. It is a figure which shows the cross section of the member for 2nd grooves of the protection case in the dry-type transformer apparatus of 5. FIG. The second embodiment is an example in which the ceiling portion of the protective case is configured by connecting six ceiling members in a planar manner.

In FIG. 5, (a) is a top view of a dry transformer device as a second embodiment, (b) is a front view, and (c) is a side view. In the figure, _{1 B} are dry-type transformers apparatus, 30 transformer body, 10 _B is a protective case which protects accommodating the transformer main body 30, 11 _B are provided in the ceiling portion of the protective casing 10 _B ceiling _{member, 11a 1, 11a 2, 11b} 1, 11b 2, 11c 1, 11c 2 includes six flat ceiling member constituting one of the ceiling member 11 _B is a plane coupled to each other, 12a, 12b is a side members constituting the sides of the protective case _{10 B, 21a 2, 21b 2} , 21c 2, 21d 2, 23 is mounted on the ceiling member 11 _B in the interior of the protective case 10 _B, the transformer body groove member forming the groove for guiding the outside of the protective casing 10 _B collect water falling to the _side, 111a 2, 111b ₂ is a ceiling member _11a 1, 11b ₁ and between the ceiling member _11a 2, 11b Coupling _members, 111c 2, 111d ₂ for coupling between the ceiling member _11b 1, 11c ₁ and between the ceiling member _11b 2, 11c ₂ during coupling the coupling member, 200a _2, the coupling member 111a ₁ and the coupling member 111b ₁ 200b ₂ is a joint between the coupling member 111c ₂ and the coupling member 111d ₂ , 200c ₂ is a joint between the coupling member 111e ₂ and the coupling member 111f _2, and 301a, 301b, and 301c are transformers A coil portion 302 of the main body 30 is a yoke portion of the transformer main body 30. The coupling members 111a ₂ and 111b ₂ form a coupling part of the ceiling members 11a ₁ and 11b _{1 and} a coupling part of the ceiling members 11a ₂ and 11b ₂ in the peripheral region of the seam 200a ₂ including the seam 200a ₂ . The coupling members 111c ₂ and 111d ₂ form a coupling part of the ceiling members 11b ₁ and 11c _{1 and} a coupling part of the ceiling members 11b ₂ and 11c ₂ in the peripheral region of the seam 200b ₂ including the seam 200b ₂ . The coupling members 111e ₂ and 111f ₂ are provided in the peripheral region of the seam 200c ₂ including the seam 200c ₂ , the joints of the ceiling members 11a ₁ and 11a ₂ , the joints of the ceiling members 11b ₁ and 11b ₂ , and the ceiling member 11c. ₁ and 11c ₂ are formed. Groove members 21a _2, in protective case 10 _B via a coupling member 111a _2, 111b ₂ attached to the ceiling member _11a 1, 11b _1, the ceiling member _11a 1, 11b ₁ of the coupling portion of the lower i.e. combined A first groove member, a groove member 21b _{2, which} is disposed below the peripheral region of the seam 200a ₂ including the eye 200a ₂ and forms a first groove with its bottom face facing the coupling portion, in protective case 10 _B via a coupling member 111a _2, 111b ₂ attached to the ceiling member _11a 2, 11b _2,該合not including the ceiling member _11a 2, 11b downwardly i.e. seam 200a ₂ of the coupling portions of ₂ The groove member 21c _{2, which} is disposed below the peripheral region of the eye 200a ₂ and forms a first groove whose bottom face faces the coupling portion, is the protective case 10. _B is attached to the ceiling members 11b ₁ and 11c ₁ via the coupling members 111c ₂ and 111d ₂ , and below the joint portion of the ceiling members 11b ₁ and 11c ₁ , that is, the joint 200b ₂ including the joint 200b ₂ . placed below the peripheral region, the first groove member for the bottom surface to form a first groove is opposed to the coupling portion, the groove member 21d ₂ are coupled in a protective case 10 _B member 111c ₂ , attached to the ceiling member _11b 2, 11c ₂ through 111d _2, placed below the peripheral region of the ceiling member _11b 2,該合allowed eye 200b ₂ includes a coupling portion of the lower i.e. seam 200b ₂ of 11c ₂ the first groove member forming the first groove and the bottom surface is opposed to the coupling portion, 23, protective case 10 described above in the _B first groove member 21a _2, 21b ₂ , 21c ₂ , 21d ₂ are formed by crossing each other at a right angle, and the bottom surface is formed at a lower position (−Z-axis direction position) than the bottom surface of the first groove; a second groove member forming the second groove in the inclined downward (-Z axis direction) toward the outer side of the Y-axis direction of the protective case 10 _B configuration. 23f is a projection of the second groove member 22 protruding to the outside of the protective casing 10 _B. Groove members 23 of the second, the ceiling member _11a 1 through the coupling member 111e _2, 111f ₂ in protective case 10 _B, 11a _{2, 11b} 1, attached to 11b _2, 11c 1, 11c _2, The ceiling members 11a ₁ , 11a ₂ , 11b ₁ , 11b ₂ , 11c ₁ , 11c ₂ are disposed below the joint portion, that is, below the peripheral region of the seam 200c ₂ including the seam 200c ₂ , A second groove facing the coupling portion is formed. The four first groove members 21a ₂ , 21b ₂ , 21c ₂ , 21d ₂ are divided on both sides of one second groove member 23 and are coupled perpendicularly to the second groove member 23. Have been to. That is, the first groove members 21a ₂ and 21c ₂ are on the −X-axis direction side with respect to the second groove member 23, and the first groove members 21b ₂ and 21d ₂ are the second groove member 23. The first grooves in each of the four first groove members 21a ₂ , 21b ₂ , 21c ₂ , 21d ₂ are arranged on the X axis direction side with respect to the one second groove member 23. This is a configuration in which both sides of the second groove are coupled orthogonally to the second groove. Each of the first groove members 21 a ₂ and 21 c ₂ has a bottom surface that is inclined downward (−Z axis direction) in the X-axis direction, and has a bottom Z-axis at a coupling position with the second groove member 23. The direction height is the lowest, and the first groove members 21b ₂ and 21d ₂ have respective bottom surfaces inclined downward (−Z axis direction) toward the −X axis direction, and the second groove member 22 is formed. The height of the bottom surface in the Z-axis direction is the lowest at the joint position. The inclined bottom surface of the second groove member 23 is the Z-axis direction of the bottom surface of the first groove members 21a ₂ , 21c ₂ , 21b ₂ , 21d ₂ at the coupling position with the second groove member 23. It is formed at a position lower than the position.

In such arrangement shown in FIG. 5, the ceiling member _11a 1, coupling of 11b ₁ and the ceiling member _11a 2, from seam 200a ₂ of a coupling portion of 11b ₂ binding member 111a _2, 111b _2, protective case 10 _B When water enters, the water falls downward (in the −Z-axis direction) from the lower end of the joint 200a ₂ , that is, from the lower ends of the coupling members 111a ₂ and 111b ₂ . The dropped water falls into the grooves (first grooves) of the first groove members 21a ₂ and 21b ₂ , flows through the grooves, and flows into the grooves (second grooves) of the second groove member 23. ) Flowed into the second groove member 23 water flows through the groove in the Y-axis direction is guided to the outside of the protection case 10 _B, it flows out from the protruding portion 23f. Similarly, the ceiling member _11b 1, 11c ₁ of the coupling portion and the ceiling member _11b 2, bond a coupling portion 11c ₂ members 111c _2, seam 200b ₂ of 111d _2, water in protective case 10 _B intrusion In this case, the water falls downward (in the −Z-axis direction) from the lower end of the seam 200b ₂ , that is, from the lower ends of the coupling members 111c ₂ and 111d ₂ . The dropped water falls into the grooves (first grooves) of the first groove members 21c ₂ and 21d ₂ , flows through the grooves, and flows into the grooves (second grooves) of the second groove member 23. ) Flowed into the second groove member 23 water flows through the groove in the Y-axis direction is guided to the outside of the protection case 10 _B, it flows out from the protruding portion 23f. From the joint portion of the ceiling members 11a ₁ and 11a _2, the joint portion of the ceiling members 11b ₁ and 11b ₂ , and the joint 200c ₂ of the joint members 111e ₂ and 111f ₂ that are the joint portions of the ceiling members 11c ₁ and 11c ₂ If water has penetrated in the case 10 _B, said water, drops downward (-Z axis direction) from the lower end i.e. the lower end of the coupling member 111e _2, 111f ₂ of該合allowed eye 200c _2. The dropped water falls into the groove (second groove) of the second groove member 23. The water that has fallen into the second groove member 23 flows in the groove in the Y-axis direction together with the water that has flowed from the first groove members 21a ₂ , 21b ₂ , 21c ₂ , 21d _2. 10 _B is guided to the outside and flows out from the protrusion 23f. Water or that has entered the seam 200a ₂ and the joint 200b ₂ and seam 200c protective case 10 _B from ₂ other portion, of the water made by condensation in a protective case 10 _B, the coupling member 111a ₂ , 111b _2, the lower ends of the coupling members 111c ₂ and 111d ₂ , and the water falling downward (−Z axis direction) from the lower ends of the coupling members 111e ₂ and 111f ₂ .
Hereinafter, the same reference numerals as those in FIG. 5 are given to the components in FIG. 5 used in the description.

FIG. 6 is a cross-sectional view taken along the c ₃ -c ₃ section of the ceiling portion of the protective case 10 _B and the first groove member 21 d ₂ in the dry transformer device 1 _B of FIG. 5, that is, the C portion (FIG. 5). FIG.
6, 112a ₂ and 112b ₂ are coupling members for coupling the first groove member 21d ₂ to the ceiling members 11b ₂ and 11c ₂ , 500a to 500e are bolts, 501b, 501c and 501d are nuts, b Reference numeral ₃ denotes a bottom surface of the first groove member 21 d ₂ , and b ₄ denotes a bottom surface of the second groove member 23. The coupling member 111c ₂ is fixed to the ceiling member 11b ₂ by a bolt 500b and a nut 501b, the coupling member 111d ₂ is fixed to the ceiling member 11c ₂ by a bolt 500c and a nut 501c, and the coupling member 111c ₂ and the coupling member 111d ₂ are They are secured together by bolts 500d and nuts 501d, to form a seam 200b _2. Further, the coupling member 112a ₂ is fixed to the ceiling member 11b ₂ and the coupling member 112b ₂ is fixed to the ceiling member 11c ₂ by welding. The coupling member 112a ₂ and the coupling member 112b ₂ are connected to the second groove member. 23 is fixed by bolts 500a and 500e. In coupling position between the first groove member 21d ₂ and the second groove member 23, the bottom surface _{b 4} of the second groove member 23, Z-axis of the first bottom surface _{b 3} of the groove member 21d ₂ It is formed at a position lower by a distance h ₂ than direction position. Thus, the water from invading the lower end of the coupling member 111c _2, 111d ₂ and falls downward in protective case 10 _B from the joint 200b _2, etc., the first groove member 21d ₂ of the groove (first groove received in) the groove of the second groove member 23 by passing through the groove (not flow into the second groove) in, further flowing through the groove, it is guided to the outside of the protective casing 10 _B it can. The same applies to the other first groove members 21a ₂ , 21b ₂ , and 21c ₂ .

Figure 7 is a diagram showing a structure of _c 4 -c ₄ cross i.e. D portion of the second groove member 23 of the protection case 10 _B in dry-type transformers apparatus _{1 B} of FIG. 5 (FIG. 5).
In FIG. 7, 113 a ₂ and 113 b ₂ are coupling members for coupling the second groove member 23 to the ceiling members 11 c ₂ and 11 c ₁ , and 500 f and 500 g are coupling members 113 a for the second groove member 23. ₂ and 113 b ₂ , b ₃ is a bottom surface of the first groove members 21 d ₂ and 21 c ₂ , and b ₄ is a bottom surface of the second groove member 23. The coupling members 113a ₂ and 113b ₂ are fixed to the ceiling members 11c ₂ and 11c ₁ by welding, respectively. At the coupling position of the first groove members 21d ₂ and 21c ₂ and the second groove member 23, the bottom surface b ₄ of the second groove member 23 is connected to the first groove members 21d ₂ and 21c ₂ . The bottom surface b ₃ is formed at a position lower than the position in the Z-axis direction by a distance h ₂ . Thus, the water from invading the lower end of the coupling member 111f _2, 111e ₂ and falls downward in protective case 10 _B from the joint 200c _2, etc., grooves of the second groove member 23 (second groove) in receiving, it can be guided to the outside of the protective casing 10 _B flowing through the groove.

According to dry-type transformers apparatus _{1 B} of the second embodiment, the lower end or coupling member 111a _2, 111b _2, the water drops downward from the lower end of the coupling member 111c _2, 111d _2, for the first groove collected by member _{21a 2,} 21b _2, 21c 2, 21d _2, to be able to put out protective case 10 _B by the second groove member 23, also downward from the lower end of the coupling member 111e _2, 111f ₂ water falling, can be discharged to the protective case 10 outside _B collected by the second groove member 23. For this reason, it is possible to prevent the transformer body 30 from being splashed with water, thereby improving the insulation deterioration of the coils 301a, 301b, 301c of the transformer body 30, deterioration due to corrosion of each part, and the like. it is possible to improve the reliability of the vessel apparatus 1 _B.

  In the first and second embodiments, the protective case is provided with one second groove member. However, the present invention is not limited to this, and a plurality of second grooves is provided. It is good also as a structure which provides the member for grooves. Further, the second groove member may have a configuration in which a plurality of second grooves are formed in one groove member. Further, the second groove member may have a configuration in which a plurality of groove members are connected in the length direction.

It is a block diagram of the dry-type transformer apparatus as a 1st Example of this invention. It is a figure which shows the cross section of the coupling | bond part of the ceiling part of the protective case in the dry type transformer apparatus of FIG. 1, and the 1st member for grooves. It is a figure which shows the cross section of the 2nd groove member of the protective case in the dry type transformer apparatus of FIG. It is a figure which shows the other structural example of the coupling | bond part of the ceiling part of the protective case in the dry type transformer apparatus of FIG. It is a block diagram of the dry-type transformer apparatus as 2nd Example of this invention. It is a figure which shows the cross section of the coupling | bond part of the ceiling part of the protective case in the dry type transformer apparatus of FIG. 5, and the 1st member for grooves. It is a figure which shows the cross section of the member for 2nd grooves of the protection case in the dry type transformer apparatus of FIG. It is a figure which shows the structural example of the conventional dry type transformer apparatus. It is a figure which shows the structure of the coupling | bond part of the ceiling part of the protective case in the dry type transformer apparatus of FIG.

Explanation of symbols

1 _A , 1 _B ... dry-type transformer device,
30 ... transformer body,
301a, 301b, 301c ... coil part,
302 ... Yoke part,
10 _A , 10 _B ... protective case,
_{11 A, 11a, 11b, 11c} , 11 B, 11a 1, 11a 2, 11b 1, 11b 2, 11c 1, 11c 2 ... ceiling member,
12a, 12b ... side members,
21a ₁ , 21b ₁ , 21c ₁ , 21d ₁ , 21a ₂ , 21b ₂ , 21c ₂ , 21d ₂ ... first groove member,
22, 23 ... second groove member,
111a ₁ , 111b ₁ , 111c ₁ , 111d ₁ , 111a ₂ , 111b ₂ , 111c ₂ , 111d ₂ , 111e ₂ , 111f ₂ , 112a ₁ , 112b ₁ , 112a ₂ , 112b ₂ , 113a ₁ , 113b ₁ , 113a ₂ 113b ₂ ... coupling member,
200a ₁ , 200b ₁ , 200a ₂ , 200b ₂ , 200c ₂ ... seam,
500a, 500b, 500c, 500d, 500e, 500f, 500g ... bolts,
501b, 501c, 501d ... nuts,
600a, 600b, 600c, 600d: sealing members.

Claims (5)

The transformer body is a dry type transformer device housed in a protective case,
The protective case is
A ceiling member in which a plurality of members are combined in a plane to form a horizontal ceiling portion of the protective case;
In the interior of the protective casing attached to the ceiling member, a groove for forming a groove for guiding the water falling towards the transformer main body side from the coupling portion of the plurality of members to the outside of the collecting Me said protective casing A first groove member that is disposed below the coupling portion and has a bottom surface that forms a first groove facing the coupling portion; and the first groove member. A second groove which is coupled to intersect with the groove and forms a second groove whose bottom surface is lower than the bottom surface of the first groove and which is inclined downward toward the outside of the protective case A groove member having a configuration in which the bottom surface of the first groove is inclined downward toward the second groove side ,
And a structure for guiding water falling from the coupling portion of the ceiling member to the outside of the protective case by the first groove member and the second groove member. Equipment. The ceiling member is coupled with the plurality of members having a plurality of coupling portions,
2. The dry transformer device according to claim 1, wherein the groove member has a configuration in which the first groove member is arranged below each of the plurality of coupling portions . In the ceiling member, the plurality of members are coupled to each other by a first coupling portion that is parallel to each other and a second coupling portion that intersects the first coupling portion,
The groove member, said first groove member is disposed below the first coupling portion, said second groove member is a structure disposed below said second coupling portion according Item 3. The dry transformer device according to item 1 or 2. It said ceiling member, dry-type transformers according to claim 1 or claim 2 is configured to sealing member is provided on the coupling portion of the plurality of members. 5. The dry transformer device according to claim 1, wherein the groove member has a configuration in which the first groove member is coupled to both sides of the second groove member. 6.

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