JP2015142107A - Disassembling and transporting method for integrally transported transformer and integrally transported transformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disassembling and transporting method for an integrally transported transformer and an integrally transported transformer, which can flexibly deal with restrictions in integral transportation of the transformer, with the transformer housed in a tank, to one transport destination and further transportation to the other transport destination after the transformer is installed at the one transport destination.SOLUTION: In the disassembling and transporting method for an integrally transported transformer and an integrally transported transformer, a transformer main body having coils inserted into a U-shaped iron core is housed in a tank and carried as the integrally transported transformer to a first carry destination to be installed therein, and then the integrally transported transformer is disassembled and carried to a second carry destination. The integrally transformed transformer installed in the first carry destination, when disassembled and carried to the second carry destination, is carried to the second carry destination after removing a second lead supporting member from an iron core supporting member, extracting the coils from the tank in a state where a lead is supported to the tank side by a first lead supporting member and separating the coils from the tank.

Description

  Embodiments described herein relate generally to an integrated transport transformer disassembly and transport method and an integrated transport transformer.

  With the increase in power demand in recent years, transformers have increased in voltage and capacity, and transport dimensions and mass have increased.

  On the other hand, transportation restrictions and the transportation environment are becoming stricter year by year, especially when large transformers are transported to substations in mountainous areas and suburban areas, transportation measures such as road width expansion and reinforcement are necessary. This entails enormous transportation costs.

  Therefore, the transformer assembled at the factory is tested and then disassembled, the transport mass is reduced, transported to the transport destination site, and reassembled at the site to reduce costs. Yes.

  As conventional transformers to be disassembled and transported in this way, for example, those having a U-shaped iron core as seen in Document 1 (see Prior Art Document 1), the upper tank in the height direction of the transformer tank, There is one that can be divided into three divided tanks, a middle tank and a lower tank (see Prior Art Document 2).

Japanese Patent No. 2573415 Japanese Patent No. 3436805

  In the case of the conventional transformer described above, it is not assumed that the transformer itself is housed in a tank and transported as a whole. If it is necessary to transport the transformer after it has been assembled on site, transport it in an assembled state. Is generally difficult in terms of tank structure and strength and must be disassembled and transported again.

  In addition, large transformers capable of integrated transportation do not have the above-described disassembling transportation function. With such a large transformer, when it is disassembled and transported to another place after installation on the site, it takes a lot of time to obtain a transportation permit, for example, the transportation conditions are different from the initial installation. Or, there is a concern that the transportation route at the time of installation makes it difficult to transport to other places.

  The problem to be solved by the present invention is to flexibly limit restrictions when a transformer is housed in a tank and transported integrally to a certain transport destination, and after the transformer is installed at the transport destination, it is transported to another transport destination. It is an object of the present invention to provide an integrated transportation transformer disassembling and transporting method and an integrated transportation transformer.

The method of disassembling and transporting the integrated transport transformer according to the embodiment includes housing a transformer body in which a coil is inserted into a U-shaped iron core in a tank, transporting it to the first transport destination as an integrated transport transformer, It is a method for disassembling and transporting an integrated transport transformer that disassembles the integrated transport transformer and transports it to a second transport destination.
When transporting the integrated transport transformer to the first transport destination, a lead pulled out from the coil housed in the tank, a first lead support member protruding from the inner wall of the tank, and It supports with the 2nd lead | read | reed support member protrudingly provided by the iron core support member which supports an iron core so that attachment or detachment is possible. When disassembling and transporting the integrated transport transformer installed at the first transport destination to the second transport destination, the second lead support member is removed from the iron core support member, and the lead is removed from the first transport destination. The coil is taken out of the tank while being supported on the tank side by a lead support member, and the coil and the tank are separated and conveyed to the second conveyance destination.

It is a perspective view which shows schematic structure of the integrated transport transformer of 1st Embodiment. (A) is a side view (figure seen from arrow C direction of FIG. 1) which shows an example of the structure of a tank (example of a 2 division structure) in the integrated transport transformer of FIG. (B) is the front view (figure seen from the arrow B direction of FIG. 1) which shows an example of the structure of a tank (example of a 2 division structure) in the integrated transport transformer of FIG. It is a top view (figure seen from arrow A direction) of the integrated transport transformer of FIG. It is a side view which shows the structure of the three-phase five-legged iron core of the integrated transport transformer of FIG. It is a figure which shows an example of the support mechanism of a coil (figure seen from the arrow B direction of FIG. 1). It is a figure (figure seen from the arrow B direction of FIG. 1) which shows the other example (2nd Embodiment) of the support mechanism of a coil. It is a side view which shows the wiring structure (3rd Embodiment) of the lead wire in a tank. (A) is a side view (figure seen from arrow C direction of FIG. 1) which shows the other example (example of a 3 division structure) of the structure of the tank of the integrated transport transformer of FIG. (B) is the front view (figure seen from the arrow B direction of FIG. 1) which shows the other example (example of 3 division structure) of the structure of the tank of the integrated transport transformer of FIG.

Hereinafter, embodiments will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram illustrating a configuration of an integrated transport transformer according to an embodiment.
As shown in FIG. 1, the integrated transport transformer of this embodiment accommodates a transformer in which a coil 14 is inserted into an iron core 13 in a tank 12 and transports it to the site (first transport destination) as an integrated transport transformer. After installing the integrated transport transformer on site, disassemble the tank 12 and the equipment (iron core 13, coil 14 etc.) accommodated in the tank 12 and transport it to another transport destination (second transport destination). Is possible.

  As shown in FIG. 2, the tank 12 includes an upper tank 3, a flange 4, a tank horizontal beam 5, a suspension jig 6, a lower tank 10, a tank vertical beam 8, a transportation jig 11, and the like.

  The outer wall (periphery) of the tank 12 is reinforced by the tank transverse beam 5 and the tank longitudinal beam 8 in order to withstand the load caused by the transformer during integral transportation.

  The tank 12 has a two-part structure mainly composed of an upper tank 3 and a lower tank 10. The lower tank 10 has a container shape (the shape of a bottomed rectangular box) in which an upper portion is opened and a bottom portion is closed by a bottom wall. The upper tank 3 functions as a so-called lid for closing the upper opening of the lower tank 10.

  The upper tank 3 and the lower tank 10 are provided with flanges 4 at the abutting portions thereof, and the upper tank 3 and the lower tank 10 are joined by fixing the flange 4 portions by welding, bolting or the like. The inside of the tank 12 is sealed.

  When disassembling the tank 12, the bolt 4 of the flange 4 is released to separate the upper tank 3 from the lower tank 10 and the contents of the transformer (iron core 13, coil 14, tap) accommodated in the middle tank 7 The switch 15 or the like can be taken out.

  As shown in FIG. 3, inside the tank 12, a U-shaped iron core 13 (hereinafter referred to as “iron core 13”) that constitutes a transformer, a coil 14, a tap changer 15, a lead wire 16, and a first lead support. Devices such as a lead wire fixing device 17a as a member and a lead wire fixing device 17b as a second lead support member are accommodated.

  A lead wire 16 is drawn from each coil 14 and connected to a tap changer 15. The tap changer 15 is used by switching taps as desired during loading.

  A plurality of lead wire fixing devices 17a are provided on the inner wall of the tank 12 so as to be detachable at predetermined intervals. The plurality of iron cores 13 are fixed to a substantially central portion of the tank 12 by an iron core fixing bracket 18. The iron core fixing bracket 18 supports a plurality of iron cores 13 arranged in a line in the longitudinal direction. That is, the iron core fixing bracket 18 is for fixing a plurality of iron cores 13 in an aligned state.

  A plurality of lead wire fixing devices 17b are provided on the iron core fixing bracket 18 so as to be detachable at predetermined intervals.

  The plurality of lead wire fixing devices 17a and 17b are arranged so as to alternately support the lead wires 16 from the respective sides. That is, the lead wire 16 is supported (fixed) from both the iron core fixing bracket 18 on the coil 14 side and the tank 12 by both of the lead wire fixing devices 17a and 17b.

  As shown in FIG. 4, the plurality of iron cores 13 are arranged in a line in the longitudinal direction. Each iron core 13 is U-shaped and has an open end at the top. The U-shaped iron cores 13 are arranged so that a plurality are arranged in a line. By combining each U-shaped iron core 13 and the upper yoke 2 mounted on the U-shaped iron core 13, it can be disassembled and transported.

  In general, the iron core for integral transportation is fixed so that the whole is integrated (a square shape) (there is no cut), but in this embodiment, it is assumed that it is disassembled after the integral transportation, The U-shaped iron core 1 and the upper yoke 2 are configured to be separable so that the iron cores can be divided. At the time of transportation, the upper yoke 2 which is the upper part of the B-shaped iron core can be removed to form a U-shaped iron core 13, and the coil 14 attached to the iron core 13 can be pulled upward.

  As shown in FIG. 5, the bottom of the tank 12 is provided with an iron core fixing bracket 18, a coil fastening plate 19, a coil receiver 20, a coil lifting device 21, and the like.

  The iron core fixing bracket 18 is provided on the top plate and bottom floor surface of the tank 12, and supports (fixes) the iron core 13 on the top plate and bottom floor surface of the tank 12. The coil fastening plates 19 are attached to the top and bottom of the coil 14, and tighten the coil 14 by applying pressure to the coil 14 from the top and bottom directions. A coil fastening plate 19 provided under the coil 14 is provided on the iron core fixing bracket 18.

  The coil receiver 20 is provided so as to surround the iron core 13 and supports the coil 14. The coil lifting device 21 is locked to the lower end portion of the coil fastening plate 19. The coil lifting device 21 is installed in advance between the lower end portion of the coil fastening plate 19 below the coil 14 and the iron core 13. The coil lifting device 21 is connected to a wire 22 that is lowered from above.

  In this example, when it is set as the integral transport transformer before transporting to the site, a coil lifting device 21 for lifting the coil 14 is arranged in advance at the bottom of the coil 14, and the site is the first transport destination. When the integrated transport transformer is disassembled and the coil 14 is taken out of the tank 12 after being transported and installed, the crane wire 22 is connected to the coil lifting device 21, and the coil 14 is lifted together with the coil lifting device 21. Take out.

A method for disassembling and transporting the integral transport transformer of this embodiment will be described.
The contents of the transformer (equipment such as the iron core 13, coil 14, and tap changer 15 constituting the transformer) are accommodated in the tank 12 and transported in the state of an integrated transport transformer in which the contents of the tank 12 and the transformer are integrated. In some cases, the transportation jig 11 is fixed to a suspension jig 6 attached to the tank 12 by welding, and transported on a transportation means such as a truck or a ship. Then, the transportation jig 11 is removed after the integrated transportation transformer is installed at the site of transportation.

  A large-scale power generation / transformation facility such as an integrated transport transformer having a total length exceeding 10 m may be required to be transported to another destination after being sent to the site and installed.

  At this time, the transportation of equipment is restricted by the conditions for transporting from the site to other destinations, not the conditions at the time of transport to the site.

  In other words, at the site, depending on the transport restrictions to other transport destinations, either the integrated transport is performed again, or the transformer is taken out of the tank and transported in a disassembled state.

  Therefore, in the present embodiment, at the initial stage of manufacturing the integrated transport transformer, the lead wire 16 drawn out from the coil 14 accommodated in the tank 12 is connected to the lead wire fixing device 17a provided on the inner wall of the tank 12. And a lead wire fixing device 17b that is detachably protruded from the iron core fixing bracket 18 and conveys the iron wire.

  After the integrated transport transformer is installed on site, when the integrated transport transformer is disassembled and transported to another transport destination (second transport destination), the lead wire 16 drawn from the coil 14 is connected to the coil 14. The lead wire fixing device 17b is removed from the iron core fixing bracket 18 by cutting at the connecting portion. At this time, the lead wire 16 is left supported on the tank 12 side by the lead wire fixing device 17a.

  In such a state, when the coil 14 accommodated in the tank 12 is pulled upward, a wire 22 suspended from above is attached to the coil lifting device 21 with the coil 14 stored in the tank 12, and the wire 22 is connected to the tank By pulling up with a crane or the like installed on the top of the coil 12, the coil 14 can be pulled up and easily pulled out from the tank 12.

  After the coil 14 is removed from the tank 12 in this way, the coil 14 and the tank 12 are separated and transferred to the next transfer destination.

  As described above, according to the first embodiment, the lead wire 16 drawn out from the coil 14 is supported and transported from both the coil 14 side and the tank 12 side by the lead wire fixing devices 17a and 17b. Thus, the coil 14 and the tank 12 which are parts of the transformer can be safely transported to the site by a transportation means such as a truck or a ship in the state of the integrated transportation transformer.

  In addition, when the integrated transport transformer transported to the site is installed on the site and then transported to the other, the coil 14 is fixed with the lead wire 16 fixed while removing either one of the lead wire fixing devices 17a and 17b. It can be removed from the tank 12.

  Further, when the coil 14 is accommodated in the tank 12 and integrated, the coil lifting device 21 is attached to the lower edge portion of the coil 14 in advance, thereby lifting the coil 14 to the lower end portion of the coil 14 at the time of disassembly. The effect that the operation | work which attaches is unnecessary becomes acquired. In addition, it is possible to obtain an effect that it is not necessary to take a spare space in the tank 12 for installing the lifting device.

  As a result, the disassembly work for removing the coil 14 from the tank 12 can be easily performed on the site, and any one of the integrated transportation method and the divided transportation method can be arbitrarily selected according to the local transportation constraints. And can respond flexibly.

  For example, when the integrated transportation conditions from the site to another transportation destination are met, the installed integral transportation transformer can be integrally transported as it is. Also, if the transportation conditions for transportation from the site to other destinations do not meet the requirements for integrated transportation, the installed transformer will be disassembled and transported. Thus, operations such as disassembly and reassembly of the equipment housed in 12 can be easily performed.

(Second Embodiment)
FIG. 6 is a view showing another example (second embodiment) of the coil support mechanism (the view of the tank 12 of FIG. 1 as viewed from the direction of arrow B). In this second embodiment, the coil 14 is inserted into the U-shaped iron core 1 and closed by the upper yoke 2 so that it can be disassembled and transported. The point which accommodates and transports integrally is the same as that of the said embodiment.

  As shown in FIG. 6, in the second embodiment, a tie rod fixing device 23 and a tie rod 24 are attached in advance between the coil 14 and the upper and lower coil clamping plates 19 instead of the coil lifting device 21 described above. ing.

  The tie rod fixing device 23 is provided in an annular shape at the bottom portion of the coil 14. The tie rod 24 is inserted into a fixing hole provided in the tie rod fixing device 23 and fixed with a nut or the like. The tie rod 24 is easily lifted from the tank 12 by lifting the coil 14 upward by pulling up with a wire 22 of a crane installed on the tank 12. Can be pulled out.

  In the second embodiment, when an integrated transport transformer before being transported to the site is provided, a tie rod fixing device 23 for lifting the coil 14 is arranged in advance at the bottom of the coil 14, and the first transport destination is used. After being transported to a certain site and installed, when the integrated transport transformer is disassembled and the coil 14 is taken out from the tank 12, the tie rod 24 is inserted into the tank 12 and connected to the tie rod fixing device 23. Pull up and take out the coil 14.

  According to the second embodiment, by attaching the tie rod fixing device 23 as a device for lifting the coil 14 to the lower end portion or the upper and lower ends of the coil 14 in advance, an operator does not enter the tank 12. The coil 14 can be easily pulled upward by pulling up the tie rod 24 with a crane or the like.

(Third embodiment)
FIG. 7 is a side view showing another example (third embodiment) of the housing structure in the tank. In this third embodiment, the coil 14 is inserted into the U-shaped iron core 1 and closed by the upper yoke 2 so that it can be disassembled and transported. The point which accommodates and transports integrally is the same as that of the said embodiment.

As shown in FIG. 7, in the case of this third embodiment, inside the tank 12, the connection point 16 a and the branch point of the lead wire 16 drawn from the coil 14 are arranged in the upper part in the tank 12. .
The lead wires 16 drawn from the lower end portion of the coil 14 are also gathered at the top.

  That is, in this example, the lead wire 16 drawn out from the coil 14 is connected or bundled and supported at a position above the coil 14 in the tank 12. As described above, the lead wire 16 is supported by the lead wire fixing devices 17a and 17b. In addition, a position where the lead wires 16 are bundled or bundled may be provided in the upper portion of the tank 12.

  According to the third embodiment, the connection point 16a and the branch point of the lead wire 16 are provided in the upper part of the tank 12, so that the container-shaped tank 12 having an open upper part has a transformer inside the tank 12. When the coil 14 is pulled out while the contents are accommodated, the operator can easily disconnect and disassemble the lead wire 16 without entering the bottom of the tank 12.

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the example shown in FIG. 2 described above, the example of the tank 12 having a two-divided structure that can be divided by the flange 4 provided in the upper tank 3 and the lower tank 10 has been described. For example, as shown in FIG. The tank 12 may have a three-part structure including the upper tank 3, the middle tank 7, and the lower tank 10a. In this case, the middle tank 7 does not have a cylindrical bottom with a rectangular periphery. The lower tank 10 a is like a lid that closes the bottom of the tank 12. That is, in this example, the lower tank 10 shown in FIG. 2 is separated into a middle tank 7 and a lower tank 10a.

  In this case, the flange 4 is provided at the contact portion between the upper tank 3 and the middle tank 7, and the flange 9 is provided at the contact portion between the middle tank 7 and the lower tank 10a. By fixing the upper flange 4 and the lower flange 9 by welding and bolting, respectively, the upper tank 3, the middle tank 7 and the lower tank 10a are joined and integrated.

  By using the tank 12 having a three-part structure as in this example, when the integrated transport transformer is disassembled and transported, the lower flange 9 fixed by welding, bolting or the like at the lower flange 9 is used. The parts are separated, and the upper part from the middle tank 7 is pulled up and removed by a crane or the like, and the contents of the lower tank 10a (iron core 13, coil 14, tap changer 15 etc.) are exposed. The device can be easily and efficiently disassembled.

  2 ... Upper yoke, 3 ... Upper tank, 4, 9 ... Flange, 5 ... Tank transverse beam, 6 ... Hanging jig, 7 ... Medium tank, 8 ... Tank vertical beam, 10, 10a ... Lower tank, 11 ... For transportation Jig, 12 ... Tank, 13 ... Iron core, 14 ... Coil, 15 ... Tap changer, 16 ... Lead wire, 16a ... Connection point, 17a, 17b ... Lead wire fixing device, 18 ... Iron core fixing bracket, 19 ... Coil fastening Attached plate, 20 ... coil receiver, 21 ... coil lifting device, 22 ... wire, 23 ... tie rod fixing device, 24 ... tie rod.

Claims (5)

A transformer body with a coil inserted into a U-shaped iron core is housed in a tank, transported to the first transport destination as an integrated transport transformer, installed, and then disassembled to disassemble the integrated transport transformer for the second transport. In the method of disassembling and transporting the integrated transport transformer to be transported ahead,
When transporting the integrated transport transformer to the first transport destination, a lead pulled out from the coil housed in the tank, a first lead support member protruding from the inner wall of the tank, and Support with a second lead support member projecting detachably on the iron core support member that supports the iron core,
When disassembling the integrated transport transformer installed at the first transport destination and transporting it to the second transport destination, the second lead support member is removed from the iron core support member,
The coil is removed from the tank in a state where the lead is supported on the tank side by the first lead support member,
A method of transporting an integral transport transformer, wherein the coil and the tank are separated and transported to the second transport destination. When the integrated transport transformer, a lifting device for lifting the coil in advance is arranged at the bottom of the coil,
The disassembly of the integral transport transformer according to claim 1, wherein when the coil is taken out from the tank to disassemble the integral transport transformer at the first transport destination, the coil is lifted and removed by the lifting device. Transport method. When the integral transport transformer is used, a tie rod fixing device for pulling up the coil in advance is arranged at the bottom of the coil,
When removing the coil from the tank to disassemble the integrated transport transformer at the first transport destination, a tie rod is inserted into the tank and connected to the tie rod fixing device, and then the tie rod is pulled up. The method for disassembling and transporting an integrated transport transformer according to claim 1 or 2, wherein the coil is taken out.   The method for disassembling and transporting an integrated transport transformer according to any one of claims 1 to 3, wherein the lead drawn from the coil is connected, bound and supported at a position above the coil in the tank. A transformer in which a coil is inserted into a U-shaped iron core whose upper end is an open end is housed in a tank and transported to a transport destination. After the tank is installed at the transport destination, the transformer is housed in the tank and the inside thereof. In an integrated transport transformer that disassembles and transports
An iron core support member for supporting the iron core in a state where a plurality of the iron cores are arranged,
A first lead support member projecting detachably on the inner wall of the tank and supporting a lead drawn out of the coil;
An integrated transport transformer, comprising: a second lead support member protruding from the iron core support member and supporting the lead by sandwiching the lead with the first lead support device.

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