JP2019197838A - Transporting method for gas-insulated static induction device and gas-insulated static induction device - Google Patents

Abstract

To provide a transporting method for a gas-insulated static induction device that can minimize assembly at an installation site and a gas-insulated static induction device.SOLUTION: In a transporting method for a gas-insulated static induction device according to the embodiment configured by housing a winding wound around an iron core inside a tank filled with an insulating gas, a tank is formed by a cylindrical tank body and a flat plate that closes both ends of the tank body. A mounting seat to which a transportation hinge is detachably attached is attached to the flat plate. The transport hinge is connected to a hanging cart for transport.SELECTED DRAWING: Figure 5

Description

  Embodiments described herein relate generally to a method for transporting a gas-insulated static induction device and a gas-insulated static induction device.

Static induction devices such as transformers and reactors are composed of a static induction main body composed of windings, iron cores, etc., a container for housing the static induction electric main body, and a cooling medium for insulation and cooling filled in the container. And comprising. In recent years, there has been a gas-insulated static induction appliance using a nonflammable insulating gas such as SF ₆ instead of the conventional insulating oil as a cooling medium.

  In a gas-insulated static induction appliance, it is necessary to increase the gas pressure from the aspects of insulation and cooling, and the container may fall under the law as a pressure vessel. In this case, a pressure vessel provided with a cylindrical tank that can withstand the gas pressure and a plate-like plate member that is curved in a convex shape and closes the end of the tank may be used as the vessel. In such a container, the plate-shaped plate-like member is set to have a relatively small plate thickness in order to suppress an increase in the weight of the entire container.

  By the way, as a method of transporting the static induction electric equipment by land, there are a rail transport and a trailer transport by a hanging type having a large transport limit dimension. In the transportation by the hanging type, removable hinges are attached to both ends of the container, and the transportation hinges are connected to the hanging cart. The transport hinge is attached to a mounting seat welded to the container.

  However, in the case of hanging-type transportation in a conventional gas-insulated static induction appliance, if the mounting seat is welded to the dish-shaped plate member at the end of the container, the thickness of the dish-shaped plate member is relatively small. Therefore, the distortion accompanying welding tends to increase. For this reason, it becomes difficult to ensure the dimensional accuracy required for the transport hinge connected to the hanging cart. Further, when the mounting seat is welded to the dish-shaped plate member, the force acting on the transport hinge during transportation acts on the dish-shaped plate member via the mounting seat, and stress concentration occurs in the curved portion. In order to suppress stress concentration, it is necessary to attach a reinforcing member around the curved part, but considering the generation of stress associated with welding, weld a reinforcing member around the curved part where bending stress is likely to occur. I can't. Therefore, in the conventional gas-insulated static induction appliance, it is difficult to weld the mounting seat to the dish-shaped plate-like member at the container end.

  Therefore, when a conventional gas-insulated static induction machine requires land transportation, it is transported to the installation site in a state of being disassembled so as to reduce the transport dimension and assembled at the installation site. However, when the assembly is performed at the installation destination, the manufacturing cost may increase as compared with the case where the assembly is performed at the factory.

Japanese Patent No. 3155414 Japanese Patent Laid-Open No. 02-205004 Japanese Examined Patent Publication No. 61-038845 Japanese Patent Laid-Open No. 04-116806 Japanese Patent Application Laid-Open No. 07-272943 JP-A-11-087142 JP-A-11-219829 Japanese Patent Application Laid-Open No. 07-122437 Japanese Patent Laid-Open No. 02-156613

  The problem to be solved by the present invention is to provide a method for transporting a gas-insulated static induction electric appliance capable of minimizing the assembly at the installation site, and a gas-insulated static induction electric appliance.

  The method for transporting a gas-insulated static induction device according to the embodiment is a method for transporting a gas-insulated static induction device configured by housing a winding wound around an iron core inside a tank filled with an insulating gas. A tank is formed by a cylindrical tank body and a flat plate that closes both ends of the tank body. A mounting seat to which the transportation hinge is detachably attached is attached to the flat plate. The transport hinge is connected to a hanging cart for transport.

A perspective view showing a gas insulated static induction machine of an embodiment. Sectional drawing in the II-II line of FIG. The front view showing the stationary induction machine main part of an embodiment. A perspective view showing a gas insulated static induction machine of an embodiment. The front view which shows the transport method of a gas insulated static induction appliance. The perspective view which shows a part of gas insulated stationary induction | guidance | derivation induction machine of the modification of embodiment.

  Hereinafter, a transportation method of a gas insulated static induction device and a gas insulated static induction device of an embodiment will be described with reference to the drawings.

First, the configuration of the gas-insulated static induction device 1 in the installed state will be described. In the embodiment, the surface on which the gas-insulated static induction appliance 1 is installed is a horizontal plane.
FIG. 1 is a perspective view illustrating a gas-insulated static induction device according to an embodiment. 2 is a cross-sectional view taken along line II-II in FIG.
As shown in FIGS. 1 and 2, the gas-insulated static induction electric machine 1 includes a static induction electric body 10, a tank 20 that is a pressure vessel and encloses an insulating gas, and stores the static induction electric machine body 10 therein. And mounting seats 50 and 60 attached to the tank 20. In addition, the code | symbol 70 in the figure has shown the hinge for transport attached to the gas insulated stationary induction | guidance | derivation induction machine 1 at the time of transport. The transport hinge 70 is removed in the installed state of the gas insulated stationary induction device 1.

FIG. 3 is a front view showing the stationary induction electric body of the embodiment.
As shown in FIG. 3, the static induction electric body 10 constitutes, for example, a three-phase tripod transformer. The static induction electric body 10 has a winding 11 and an iron core 12. Three windings 11 are provided. Each winding 11 is wound around the iron core 12 so that the winding axis is along the vertical direction. The iron core 12 includes three legs 13 around which the winding 11 is wound, and a yoke 14 connected to the end of each leg 13. Each of the three legs 13 extends in the vertical direction. The three legs 13 are arranged at substantially equal intervals in one horizontal direction. The yoke 14 extends in one horizontal direction. The yoke 14 connects the upper end portions and the lower end portions of a pair of adjacent legs 13. Thereby, the magnetic flux generated by the winding 11 flows through the magnetic path formed by the leg 13 and the yoke 14. The static induction electric device body is not limited to a three-phase tripod transformer, and may be a three-phase five-leg transformer, for example.

FIG. 4 is a perspective view showing the gas-insulated static induction device of the embodiment.
As shown in FIGS. 1 and 4, the tank 20 is joined to a cylindrical tank body 21, a pair of flat plates 24 </ b> A and 24 </ b> B that close both ends 21 a and 21 b of the tank body 21, and the outer peripheral surface of the tank body 21. The reinforced portion 30 and the upper connection portion 40 are provided.

  The tank body 21 is disposed so as to surround the stationary induction electric body 10 (see FIG. 2). The tank body 21 extends along one horizontal direction in which the three legs 13 (see FIG. 3) of the iron core 12 are arranged. The tank body 21 has a thickness of about 10 mm, for example. In the following description, the direction along the central axis of the tank body 21 is referred to as the axial direction, the radial direction of the tank body 21 is simply referred to as the radial direction, and the circumferential direction of the tank body 21 is simply referred to as the circumferential direction. In the axial direction, the direction from the center of the tank body 21 toward each end is referred to as the outside in the axial direction, and the direction toward the center of the tank body 21 is referred to as the inside in the axial direction.

  The pair of flat plates 24 </ b> A and 24 </ b> B are a first flat plate 24 </ b> A that closes the first end 21 a of the tank main body 21, and a second flat plate 24 </ b> B that closes the second end 21 b of the tank main body 21. The first flat plate 24 </ b> A is formed in a disc shape having substantially the same diameter as the outer diameter of the tank body 21. The first flat plate 24A is welded to the opening edge of the first end 21a of the tank body 21 over the entire circumference. The second flat plate 24 </ b> B is formed in a disc shape having substantially the same diameter as the outer diameter of the flange 22 provided at the second end 21 b of the tank body 21. The second flat plate 24B is in close contact with the opening edge of the second end portion 21b of the tank body 21 over the entire circumference. The second flat plate 24B is fastened to the flange 22 of the second end 21b of the tank body 21 by a plurality of bolts (not shown). The pair of flat plates 24 </ b> A and 24 </ b> B is formed thicker than the tank body 21. Specifically, each of the pair of flat plates 24A and 24B has a thickness of 50 mm or more in order to ensure the strength necessary for the pressure vessel.

  As shown in FIG. 4, the reinforcing portion 30 suppresses the bending of the tank body 21 and supports the tank 20 by being interposed between the tank 20 and the installation surface. The reinforcing portion 30 extends in the axial direction when viewed from the radial direction. The reinforcing portion 30 is disposed so as to straddle the central portion of the tank body 21 in the axial direction. The reinforcing portion 30 extends from the end portion on the first end portion 21a side of the tank body 21 in the axial direction to the end portion on the second end portion 21b side of the tank body 21, and is integrated. The reinforcing portion 30 extends from the lower surface of the tank body 21. The reinforcing portion 30 includes a leg portion 31 extending in a direction orthogonal to the axial direction in plan view, a rib 32 extending in the axial direction, a jack receiver 33 joined to the leg portion 31, and a lower connection joined to the leg portion 31. Unit 34.

  A plurality (three in the present embodiment) of the leg portions 31 are provided and are arranged at intervals in the axial direction. The plurality of leg portions 31 are arranged at equal intervals. The plurality of leg portions 31 are disposed on the inner side in the axial direction with respect to both end portions 21a and 21b of the tank body 21 in the axial direction. The leg portion 31 is welded to the lower surface of the tank body 21 over the entire length in the axial direction. The lower end surface of the leg portion 31 extends in the horizontal direction and contacts the installation surface.

  The rib 32 is formed in a rectangular plate shape extending in the axial direction and the vertical direction. A plurality of ribs 32 (two in this embodiment) are provided, and are arranged at intervals in the horizontal direction when viewed from the axial direction. The rib 32 extends from the same position as the first end 21a of the tank body 21 in the axial direction to the same position of the second end 21b. The rib 32 is welded to the lower surface of the tank body 21 over the entire length. The lower end edge of the rib 32 extends in the axial direction and is positioned slightly above the lower end surface of the leg portion 31. The rib 32 and the leg part 31 are provided so that it may mutually cross. The rib 32 and the leg part 31 are joined to each other by welding or the like. The rib 32 and the leg part 31 are integrated.

  The jack receiver 33 is a part that is supported by the jack when the gas-insulated static induction electric device 1 is installed. A pair of jack receivers 33 are provided on the left and right sides as viewed from the axial direction with a gap in the axial direction. The jack receiver 33 is fixed to a pair of leg portions 31 located on the outer side in the axial direction among the plurality of leg portions 31. The jack receiver 33 includes a horizontal plate 33a with which a jack or the like contacts from below, and a reinforcing plate 33b extending across the horizontal plate 33a.

  The horizontal plate 33a is formed in a flat plate shape along the horizontal direction. The horizontal plate 33a extends from an end portion of the joint portion between the tank body 21 and the leg portion 31 as viewed from the axial direction. The horizontal plate 33 a extends in a direction away from the tank body 21. The horizontal plate 33 a is welded to a joint portion between the tank body 21 and the leg portion 31.

  The reinforcing plate 33b is formed in a flat plate shape that extends along a surface direction orthogonal to the axial direction. The reinforcing plate 33b extends from both the tank body 21 and the leg portion 31 across the end portion viewed from the axial direction in the joint portion between the tank body 21 and the leg portion 31 in the vertical direction. The reinforcing plate 33 b extends in a direction away from the tank body 21 and the leg portion 31. The reinforcing plate 33 b is welded to the tank body 21 and the leg portion 31. On the upper part of the reinforcing plate 33b, a hook on which a suspension wire of a crane is hung is formed. The reinforcing plate 33b is provided so as to intersect the horizontal plate 33a. In the present embodiment, the reinforcing plate 33b is orthogonal to the horizontal plate 33a at an intermediate portion of the horizontal plate 33a in the axial direction. The reinforcing plate 33b is welded to the horizontal plate 33a. Accordingly, the reinforcing plate 33b connects the horizontal plate 33a and the tank body 21, and connects the horizontal plate 33a and the leg portion 31 to reinforce the horizontal plate 33a.

  The lower connection part 34 is a place where the mounting seats 50 and 60 are connected. The lower connecting portion 34 includes a fixed portion 34a to which the mounting seats 50 and 60 are fixed, a first interposed portion 34b interposed between the fixed portion 34a and the leg portion 31, and a space between the fixed portion 34a and the jack receiver 33. A second interposition part 34c interposed between the two.

  The fixing portion 34a is disposed further outward in the axial direction than the outer leg portion 31 in the axial direction. The fixing portion 34a is provided at a position facing lower ends of bases 51 and 61 (described later) of the mounting seats 50 and 60. The fixed portion 34a is formed in a flat plate shape that extends along a surface direction orthogonal to the axial direction. The radially inner end of the fixed portion 34a is welded to the outer peripheral surface of the tank body 21 over the entire length in the circumferential direction.

  The first interposition part 34b is formed in a flat plate shape extending in the axial direction. The axially outer end of the first interposition part 34b is welded to the fixed part 34a. The inner end of the first interposition part 34b in the axial direction is welded to the leg part 31. Thereby, the 1st interposition part 34b is fixing the fixing | fixed part 34a and the leg part 31. As shown in FIG. The radially inner end of the first interposition part 34b is welded to the outer peripheral surface of the tank body 21 over the entire axial length.

  The second interposition part 34c is formed in a flat plate shape extending in the axial direction. The axially outer end of the second interposition part 34c is welded to the fixed part 34a. The axially inner end of the second interposition part 34 c is continuous with the horizontal plate 33 a of the jack receiver 33. In the present embodiment, the second interposition part 34 c is formed by a member integrated with the horizontal plate 33 a of the jack receiver 33. Thereby, the 2nd interposition part 34c has fixed the fixing | fixed part 34a and the jack receptacle 33. FIG. The lower connecting portion 34 is integrated with the leg portion 31 and the jack receiver 33.

  A plurality of upper connection portions 40 are provided. The upper connection portion 40 is provided above each of the plurality of lower connection portions 34. That is, a pair of upper connection portions 40 are provided on the left and right sides of the tank main body 21 in the vicinity of the first end 21a and in the vicinity of the second end 21b as viewed from the axial direction. The upper connecting portion 40 is provided at a position facing the upper end portions of the base portions 51 and 61 of the mounting seats 50 and 60. The upper connecting portion 40 is formed in a flat plate shape that extends along a surface direction orthogonal to the axial direction. The radially inner end of the upper connecting portion 40 is welded to the outer peripheral surface of the tank body 21 over the entire length in the circumferential direction.

  As shown in FIGS. 1 and 4, the mounting seats 50 and 60 are provided at both ends of the tank 20, respectively. The mounting seats 50, 60 are a first mounting seat 50 joined to the first flat plate 24 </ b> A of the tank 20 and a second mounting seat 60 joined to the second flat plate 24 </ b> B of the tank 20.

  As shown in FIG. 1, the first mounting seat 50 is divided into a pair of left and right when viewed from the axial direction. Each of the left part and the right part of the first mounting seat 50 viewed from the axial direction includes a base part 51 to which the transport hinge 70 is attached, a pair of connecting parts 52A and 52B that connect the base part 51 and the reinforcing part 30, Is provided.

  The base 51 is a flat plate-like member having a thickness in the axial direction and having the vertical direction as a longitudinal direction. The base 51 is disposed to face the first flat plate 24A. The upper and lower ends of the base 51 are disposed on the outer side in the radial direction with respect to the first flat plate 24A as viewed in the axial direction. The base 51 is welded to the first flat plate 24A. The base 51 is formed with a screw hole into which a bolt (not shown) for fixing the transport hinge 70 is screwed.

  The connecting portions 52A and 52B are an upper connecting portion 52A extending from the upper end portion of the base portion 51 toward the inner side in the axial direction, and a lower connecting portion 52B extending from the lower end portion of the base portion 51 toward the inner side in the axial direction. The upper connecting portion 52A connects the base portion 51 and the upper connecting portion 40. The outer end of the upper connecting portion 52A in the axial direction is welded to the base 51. An end portion on the inner side in the axial direction of the upper connecting portion 52 </ b> A is welded to the upper connecting portion 40. The upper connecting portion 52A is formed by a pair of parallel flat plates, for example. The lower connecting portion 52B connects the base portion 51 and the lower connecting portion 34. The outer end of the lower connecting portion 52B in the axial direction is welded to the base 51. The axially inner end portion of the lower connecting portion 52B is welded to the fixing portion 34a of the lower connecting portion 34. The lower connecting portion 52B is formed by, for example, three parallel flat plates.

  As shown in FIG. 4, the second mounting seat 60 is divided into a pair of left and right when viewed from the axial direction. Each of the left and right portions of the second mounting seat 60 viewed from the axial direction includes a base 61 to which the transport hinge 70 is attached, a pedestal 62 interposed between the base 61 and the second flat plate 24B, and a base 61. And a pair of connecting portions 63A and 63B that connect the reinforcing portion 30 to each other.

  The base 61 is formed in a flat plate shape having a thickness in the axial direction. The base 61 is disposed to face the second flat plate 24B. The base 61 is divided vertically. A gap is provided between the upper portion and the lower portion of the base portion 61. The upper end portion of the base portion 61 is disposed on the outer side in the radial direction than the second flat plate 24B when viewed from the axial direction. The lower end portion of the base portion 61 is disposed on the outer side in the radial direction than the second flat plate 24B when viewed from the axial direction. The base 61 is formed with a screw hole into which a bolt (not shown) for fixing the transportation hinge 70 is screwed. Note that the base 61 of the second mounting seat 60 may not be divided vertically.

  The gantry 62 is disposed so as to straddle the upper and lower portions of the base 61 (see FIG. 1). The gantry 62 includes a flat plate member extending in the vertical direction and a flat plate member extending in a direction orthogonal to the axial direction and the vertical direction. The axially outer end of the gantry 62 is welded to the base 61. The axially inner end of the gantry 62 is welded to the second flat plate 24B. In this way, the base 61 is attached to the second flat plate 24B in a state where the base 61 is lifted from the second flat plate 24B by the mount 62, so that the base 61 comes into contact with the bolt that fastens the tank body 21 and the second flat plate 24B. It is preventing.

  The connecting portions 63A and 63B include an upper connecting portion 63A extending from the upper end portion of the base portion 61 toward the inner side in the axial direction, and a lower connecting portion 63B extending from the lower end portion of the base portion 61 toward the inner side in the axial direction. The connecting portions 63A and 63B of the second mounting seat 60 are formed in substantially the same manner as the connecting portions 52A and 52B of the first mounting seat 50.

Next, the configuration of the gas-insulated static induction device during transportation will be described.
As shown in FIG. 1, when the gas-insulated static induction device 1 is transported, transport hinges 70 are attached to both ends of the gas-insulated static induction device 1 in the axial direction. The transport hinge 70 includes a pair of hinge main bodies 71 attached to the bases 51 and 61 of the attachment seats 50 and 60, and an installation part 72 provided between the pair of hinge main bodies 71.

  The hinge body 71 extends in the vertical direction along the bases 51 and 61 of the mounting seats 50 and 60. The upper end portion of the hinge main body 71 is located in the vicinity of the upper end portions of the base portions 51 and 61 of the mounting seats 50 and 60. The lower end portion of the hinge main body 71 is located near the lower end portions of the base portions 51 and 61 of the mounting seats 50 and 60. The hinge main body 71 is fastened to the bases 51 and 61 of the mounting seats 50 and 60 by bolts or the like (not shown) and is detachably fixed. A shaft hole 73 is formed in the lower portion of the hinge body 71. The shaft hole 73 penetrates in the direction orthogonal to the axial direction and the vertical direction. The shaft holes 73 of the pair of hinge bodies 71 are provided coaxially with each other.

  A pair of the erection parts 72 are provided in the vertical direction. Each installation part 72 is extended in the direction orthogonal to an axial direction and an up-down direction so that a pair of hinge main bodies 71 may be connected. In the illustrated example, the upper erection part 72 connects the upper ends of the pair of hinge bodies 71 to each other. The lower erection part 72 connects places above the lower ends of the pair of hinge main bodies 71.

Next, the transport method of the gas insulated static induction appliance 1 will be described. Below, the case where rail transportation or trailer transportation is applied as a transportation method of gas insulation static induction electric machine 1 is explained.
FIG. 5 is a front view showing a method of transporting the gas-insulated static induction device.
As shown in FIG. 5, the transportation method of the gas-insulated static induction device 1 is performed using a hanging cart 80. Specifically, the gas insulated static induction electric machine 1 is transported in a state of being sandwiched by a pair of hanging carts 80 from both sides in the axial direction. The hanging carriage 80 is pulled by a locomotive or a tractor (towing vehicle). The hanging cart 80 includes a cart 81 and a schnabel 82 that is rotatably supported on the upper portion of the cart 81.

  The schnabel 82 is rotatably supported by the carriage 81 at the first end 82a, and is connected to the transport hinge 70 at the second end 82b. The schnabel 82 is rotatable about an axis along the vertical direction with respect to the carriage 81. A shaft hole 83 into which the common shaft 84 is inserted into the shaft hole 73 of the transport hinge 70 is formed in the lower portion of the second end portion 82 b of the schnabel 82. In the transport state, a common shaft bar 84 is inserted into the shaft hole 73 of the transport hinge 70 and the shaft hole 83 of the schnabel 82, whereby the transport hinge 70 is connected to the hanging carriage 80. In the transport state, the transport hinge 70 and the schnabel 82 are rotatable about the shaft 84. The upper portion of the second end portion 82 b of the schnabel 82 is in contact with the upper portion of the hinge body 71 of the transport hinge 70. As a result, the gas-insulated static induction electrical apparatus 1 is sandwiched by the upper portions of the second end portions 82b of the pair of schnabels 82 via the transportation hinge 70 and is obliquely formed by the lower portions of the second end portions 82b of the pair of schnabels 82 Pulled upward. As described above, the gas-insulated static induction electric machine 1 is transported in a state of being lifted by the pair of hanging carriages 80.

  In the present embodiment, the force acting on the transport hinge 70 is transmitted through the following path. The force acting on the transport hinge 70 is transmitted to the mounting seats 50 and 60 via the fastening portion between the transport hinge 70 and the mounting seats 50 and 60. The force transmitted to the mounting seats 50 and 60 is transmitted to the reinforcing portion 30 via a joint portion between the mounting seats 50 and 60 and the lower connection portion 34 of the reinforcing portion 30. As a result, the reinforcing portion 30 bears a force acting on the gas-insulated static induction electrical appliance 1 from the transportation hinge 70 during transportation, and an excessive force acting on the tank 20 is suppressed.

  By the way, in the conventional gas insulated static induction appliance, both ends of the cylindrical tank main body are closed by a plate-shaped plate-shaped member curved in a convex shape having high pressure resistance. In this case, the plate-shaped plate member is set to have a relatively small plate thickness in order to suppress an increase in the weight of the tank. However, when the mounting seat is welded to the dish-shaped plate-like member, the force acting on the transport hinge during transportation acts on the dish-shaped plate-like member via the mounting seat, as in the above embodiment. Stress concentration occurs. In order to suppress stress concentration, it is necessary to attach a reinforcing member around the curved part, but considering the generation of stress associated with welding, weld a reinforcing member around the curved part where bending stress is likely to occur. I can't. Therefore, since the structure which attaches a mounting seat to a tank becomes complicated, the gas insulated static induction machine of a prior art is difficult to transport using a hanging cart. For this reason, the gas-insulated static induction machine of the prior art is transported to the installation site in a disassembled state and assembled at the installation site.

  The transportation method of the gas-insulated static induction apparatus 1 according to the present embodiment is such that the tank 20 is formed by a cylindrical tank body 21 and a pair of flat plates 24A and 24B closing both end portions 21a and 21b of the tank body 21 for transportation. The mounting seats 50 and 60 to which the hinge 70 is detachably attached are attached to the flat plates 24A and 24B, and the transportation hinge 70 is connected to the hanging carriage 80 for transportation. According to this method, since the mounting seats 50 and 60 are attached to the flat plates 24A and 24B, the mounting seats 50 and 60 can be attached to the flat plates 24A and 24B with a simple configuration as compared with the case where the mounting seat is attached to a curved member. Can be attached. Thereby, since it is not necessary to disassemble and transport the gas-insulated static induction device 1, the assembled gas-insulated static induction device 1 can be transported using the hanging carriage 80. Therefore, assembly at the installation site can be minimized.

  Moreover, since the mounting structure of the mounting seats 50, 60 to the flat plates 24A, 24B has been simplified, the weld length between the flat plates 24A, 24B and the mounting seats 50, 60 is reduced, so that the amount of distortion associated with welding is also reduced. Become. Thereby, position shift of mounting seats 50 and 60 is suppressed, and it can control that a connection part of hinge 70 for transportation attached to mounting seats 50 and 60 and hanging cart 80 shifts. Therefore, the gas-insulated static induction appliance 1 can be transported stably.

  Furthermore, compared with the case where both ends of the tank body 21 are closed by curved plate-like plate-like members, the stress concentration generated in the flat plates 24A and 24B is suppressed by the absence of the curved portion. For this reason, it is not necessary to attach the reinforcement member for suppressing stress concentration to a tank. Therefore, the structure of the gas-insulated static induction device 1 can be simplified.

  Further, the thickness of the flat plates 24A and 24B is set to 50 mm or more in order to give sufficient strength against the internal pressure during operation of the equipment. Thereby, the distortion accompanying welding with flat plate 24A, 24B and the attachment seats 50 and 60 can be suppressed reliably. Therefore, it can suppress that the connection part of the hinge 70 for transport and the hanging cart 80 shift | deviates.

(Modification)
FIG. 6 is a perspective view illustrating a part of a gas-insulated static induction electric appliance according to a modification of the embodiment.
As shown in FIG. 6, the gas-insulated static induction electrical apparatus 1 according to the modification of the embodiment includes a mounting seat 160 instead of the mounting seat 60, and the mounting seat 160 and the reinforcing portion 30 are fastened by bolts 167 and 168. It differs from the embodiment in that.

  The mounting seat 160 includes a base 61, a pedestal 62, and a pair of connecting members 163 </ b> A and 163 </ b> B that connect the base 61 and the reinforcing portion 30. The connecting members 163A and 163B include an upper connecting member 163A interposed between the upper end portion of the base 61 and the upper connecting portion 40, and a lower connecting member 163B interposed between the lower end portion of the base 61 and the lower connecting portion 34. .

  The upper connecting member 163A is formed in a rectangular parallelepiped box shape that opens outward in the radial direction. That is, the upper connecting member 163A includes a pair of side plates 163Aa extending along a surface direction orthogonal to the axial direction, a bottom plate 163Ab that connects and fixes the pair of side plates 163Aa, and a pair of side plates 163Ac. The axially outer side plate 163Aa is arranged along the upper end portion of the base portion 61. The axially inner side plate 163Aa is disposed along the upper connecting portion 40. The upper connecting member 163A is fixed by a bolt 165 that fastens the side plate 163Aa and the base 61 on the outer side in the axial direction. Thus, the upper connecting member 163A can be separated from the base 61. The bolt 165 may be screwed into a screw hole formed in one of the side plate 163Aa and the base 61, or may be screwed into a nut (the same applies to bolts 166, 167, and 168 described later). ). In the illustrated example, the bolt 165 is screwed to the nut.

  The lower connecting member 163B is formed in a rectangular parallelepiped box shape that opens outward in the radial direction. That is, the lower connecting member 163B includes a pair of side plates 163Ba extending along a plane direction orthogonal to the axial direction, a bottom plate 163Bb and a pair of side plates 163Bc that connect and fix the pair of side plates 163Ba. The axially outer side plate 163Ba is disposed along the lower end portion of the base portion 61. The axially inner side plate 163Ba is disposed along the fixing portion 34a of the lower connection portion 34. The lower connecting member 163B is fixed by a bolt 166 that fastens the side plate 163Ba and the base 61 on the outer side in the axial direction. The lower connecting member 163B is separable from the base 61.

  The mounting seat 160 is fastened to the upper connecting portion 40 and the lower connecting portion 34 by bolts 167 and 168. The bolt 167 fastens the side plate 163Aa on the inner side in the axial direction of the upper connecting portion 40 and the upper connecting member 163A. The bolt 168 fastens the fixing portion 34a of the lower connection portion 34 and the side plate 163Ba on the inner side in the axial direction of the lower connecting member 163B. Thereby, the attachment seat 160 is fastened to the reinforcement part 30 so that attachment or detachment is possible. The connecting members 163A and 163B can be detached from the base 61, the upper connecting portion 40, and the lower connecting portion 34. The connecting members 163A and 163B may be removed in the installed state of the gas-insulated static induction appliance 1, or may be fixed to the base 61, the upper connecting part 40, and the lower connecting part 34.

  In the above description, the second mounting seat 160 joined to the second flat plate 24B of the tank 20 has been described. However, the first mounting seat joined to the first flat plate 24A (see FIG. 1) of the tank 20 is also The two mounting seats 160 may be configured similarly. In the illustrated example, the fixing portion 34a of the lower connection portion 34 is formed in a rectangular frame shape, but may be formed in a flat plate shape as in the above embodiment.

  In this modification, the force acting on the transport hinge 70 is transmitted through the following path. The force acting on the transport hinge 70 is transmitted to the mounting seat 160 via the fastening portion between the transport hinge 70 and the mounting seat 160. The force transmitted to the mounting seat 160 is transmitted through the fastening portion between the base 61 and the lower connecting member 163B, the lower connecting member 163B, and the fastening portion between the lower connecting member 163B and the lower connecting portion 34 of the reinforcing portion 30. 30. As a result, the reinforcing portion 30 bears a force acting on the gas-insulated static induction electrical appliance 1 from the transportation hinge 70 during transportation, and an excessive force acting on the tank 20 is suppressed.

  Thus, in this modification, the attachment seat 160 is detachably fastened to the lower connection portion 34 at the end of the reinforcing portion 30 in the axial direction. According to this method, compared to the case where the mounting seat is welded to the reinforcing portion 30, it is possible to avoid the occurrence of distortion caused by welding. Thereby, the position shift of the mounting seat 160 is suppressed, and it is possible to suppress the shift of the connecting portion between the transportation hinge 70 and the hanging carriage 80 attached to the mounting seat 160. Therefore, the gas-insulated static induction appliance 1 can be transported stably.

  In the above modification, the upper connecting member 163A is fastened to the base 61 and the upper connecting portion 40 by bolts 165 and 167, respectively, but is not limited thereto. The upper connecting member 163 </ b> A may be configured to be fastened together by a single bolt that fastens the base 61 and the upper connecting portion 40. The same applies to the lower connecting member 163B.

  According to at least one embodiment described above, a tank is formed by a cylindrical tank body and a flat plate that closes both ends of the tank main body, and a mounting seat to which a transport hinge is detachably attached is attached to the flat plate, By connecting the transportation hinge to the hanging carriage for transportation, the assembled gas-insulated static induction appliance can be transported using the hanging carriage. Therefore, assembly at the installation site can be minimized.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Gas insulation static induction | electrical_connection apparatus, 11 ... Winding, 12 ... Iron core, 20 ... Tank, 21 ... Tank main body, 24A ... 1st flat plate (flat plate), 24B ... 2nd flat plate (flat plate), 30 ... Reinforcement part, 50 ... 1st mounting seat (mounting seat), 60, 160 ... 2nd mounting seat (mounting seat), 70 ... Hinge for transportation, 80 ... Hanging carriage

Claims (4)

It is a method of transporting a gas-insulated static induction electric machine configured by storing a winding wound around an iron core inside a tank filled with an insulating gas,
The tank is formed by a cylindrical tank body and a flat plate that closes both ends of the tank body,
Attach a mounting seat to which the transport hinge is detachably attached to the flat plate,
The transport hinge is connected to a hanging cart for transportation.
Transportation method of gas-insulated static induction machine. A reinforcing portion that extends in the axial direction along the central axis of the tank main body as viewed from the radial direction of the tank main body and extends across the central portion of the tank main body in the axial direction is joined to the outer peripheral surface of the tank main body. And
The mounting seat is detachably fastened to the reinforcing portion.
The method for transporting a gas-insulated static induction device according to claim 1. The thickness of the flat plate is set to 50 mm or more,
The method for transporting a gas-insulated static induction device according to claim 1 or 2. A static induction electric body having an iron core and a winding wound around the iron core;
A tank that encloses an insulating gas and accommodates the stationary induction electric body, a tank having a cylindrical tank body, and a flat plate that closes both ends of the tank body;
A mounting seat attached to the flat plate and detachably attached to a transportation hinge that can be connected to a hanging carriage;
A gas-insulated static induction machine comprising:

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