JPH05135957A - Method for assembling disassemble transportation induction apparatus - Google Patents

Abstract

PURPOSE:To reduce transportation cost and to improve on-site assembly quality by facilitating assembly underground or in a building in on-site assembly of an induction apparatus to be disassemble transportation. CONSTITUTION:An iron core 13, a coil 14, a tank 15a, and the like that are disassembled and transported are assembled on site by a gate type lifter having elevation, transfer, and centering functions. This process dispenses with an assembly wrecker or a special-purpose crane and facilitates assembly to improve quality.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a disassembling / transporting induction machine for disassembling and transporting an iron core, a coil and the like and reassembling them on site.

[0002]

2. Description of the Related Art In recent years, power transmission systems have become
In addition to higher voltage such as 500KV power transmission, the capacity of transformers used for power transmission and transformation is increasing. In addition, the transmission distance has become longer, and the transformers are often installed in mountainous areas or underground in urban areas where the transportation conditions are more severe, and it is necessary to drastically reduce the transportation size and weight.

Conventionally, for a transformer installed in such a place, in order to ensure local assembly quality, a split transportation transformer is premised on that the core parts, coils, etc., which are important for quality, are not disassembled. Has been adopted.

[0004]

[Problems to be Solved by the Invention] When a 300 MVA class transformer is composed of a conventional disassembly and transport transformer, it is common to divide it into 3 parts due to the local installation space and the economical efficiency of the transformer, and the transport weight is 60. The limit is to reduce tons. Therefore, there is a problem that road reinforcement work including reinforcement of large bridges is required for local trailer transportation after transportation by rail or ship, and enormous transportation cost is required.

An object of the present invention is to install and install an induction electric device for disassembly and transportation in the underground or inside a building, or to support a lifting and lowering of an iron core, a coil, a tank, etc. for a case where a tow truck cannot be used due to other restrictions. By using a movable assembly lifter, the iron core, coil, tank, etc. are disassembled into units, and the transport dimensions and weight are directly transported from the factory to the site with a general retort, and assembled in a clean house where dust and moisture are controlled. It is possible to obtain a method for assembling a disassembling transportation induction device, which is capable of significantly reducing the transportation cost by enabling the above, and improving the on-site assembly quality of the induction device.

[0006]

In order to achieve the above object of the present invention, the following technical means are implemented. Assemble the iron core, coil, and tank that have been disassembled into units of induction electric equipment such as transformers, as well as local contents assembly that involves internal connection work such as internal connection work.Transform a clean house that has the dustproof and moistureproof characteristics of a factory assembly room. It will be installed in the chamber and the assembly lifter will be installed inside. By supporting the contents and tanks that have been disassembled and transported to the on-site assembly lifter and lifting, moving, and centering functions, it is possible to disassemble and transport large capacity transformers and assemble the contents inside a clean house. Furthermore, the coil unit can be sealed and packed with film during transportation and on-site assembly work to further enhance the moisture and dustproof effects during on-site assembly.

[0007]

Operation: Two self-supporting lifters equipped with a moving device are formed in a gate shape by a connecting beam, and four supporting devices having swiveling, elevating, and centering functions are attached to disassemble and transport an iron core, a coil, This is possible by omitting the step of hanging the assembly of the tank and the like from above.

Therefore, since the disassembled and transported contents parts can be assembled in a dustproof and moistureproof clean house installed in the local transformer room, the disassembled and transported transformer has the same local assembly quality as the factory. Can be secured. By connecting a humidity control device such as a dry air generator to the clean house, the humidity inside the house can be constantly controlled to a low humidity level of 50% or less.

On the other hand, the coil, which has a high electric field and is most important for ensuring the quality of the high-voltage device, must be kept sealed with a film until just before the coil tightening work, which is the final step of assembling the upper yoke after inserting the iron core leg with a lifter and stacking the upper yoke. Can be done. Therefore, the exposure time of the coil insulator is minimized and dust,
It is possible to completely prevent the entry of foreign matter, and to secure the local content assembly quality in combination with the assembly work in the clean house by the assembly lifter without hanging from above.

In this way, by adopting the assembly lifter which does not require the hanging process from above, and the work in the clean house, it is possible to ensure the local assembly quality of the induction machine. Therefore, for example, a 300 MVA assembled transformer can be disassembled into units with a maximum weight of 25 tons or less, and can be disassembled and transported on a general low floor trailer.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the assembly lifter, and FIGS. 2 and 3 are a side view and a plan view thereof.

A lower support base 4a having a traveling device 2 which moves back and forth, a hydraulic cylinder device 3 fixed to the lower support base 4a, and an upper support base 4 which is vertically moved by operating the hydraulic cylinder 3.
By disposing two lifters 1a composed of the left and right sides and fixing the upper supporting bases of these lifters with a connecting beam 6, a traveling gate type lifter 1 having a gate shape is constructed. This traveling gantry lifter 1 is a traveling guide fixed on the upper surface 12 by arranging it left and right.
The upper part 11 is moved back and forth by the traveling device 2 driven by the electric drive device 2a.

A slide device 8 which extends between the left and right upper support bases 4 and is adjustable in the left-right direction with respect to the support bases 4.
By equipping the load stand 7 having the above, the centering work on the plane can be performed with high accuracy. Four support fittings 9 are fixed to the load platform 7 which is vertically moved up and down by the hydraulic cylinder device 3 substantially symmetrically about the plane center of the traveling gantry lifter 1. Each of the four support fittings 9 is rotatable with respect to the load base 7. An L-shaped metal fitting 9a having a horizontal support surface is attached to this support metal 9. The on-site lifter 1 having the above-described structure can be easily operated, for example, by operating the hydraulic cylinder 4 with the hydraulic unit 4a provided on the portal lifter 1 in a state where the disassembled and transported coil unit 14 is supported by the L-shaped metal fitting 9a. It is possible to move up and down. Further, a load base 7 fixed to the upper support base 4 by a slide device 8
Since the position can be adjusted in the left-right direction, the high-precision centering work when inserting and assembling the coil unit 14 into the iron core leg can be easily performed by the front-back, left-right movement adjustment function.

FIG. 4 shows the U-shaped iron core unit 13 of the induction electric device which is assembled and disassembled and transported by the lifter 1 and is supported and moved to the floor surface 12.
The operation of setting in the lower tank 15a installed above is shown. Since the iron core unit 13 has a small dimension in the width direction, it may be directly suspended from the load base 7 without using the L-shaped metal fitting 9a.

In FIG. 5, the coil unit 14 is moved by the traveling device 2 of the supporting and assembling lifter 1 by the L-shaped metal fitting 9a, and the lateral position is adjusted by the sliding device 8 of the load table 7.
The work of inserting into the iron core leg set in FIG. 4 is shown. FIG. 6 shows the use of the assembling lifter 1 for assembling the upper tank 15, and is an example in which the receiving beam of the upper tank 15 is directly supported by the left and right lifters.

As described above, the iron core unit 13 disassembled and transported, the coil unit 14 of each phase, and the upper tank 15
The height of the assembly space, etc., can be assembled only by securing the minimum dimension of the height of the core and the height of the coil unit or the upper tank. The assembly lifter 1
The floor space for assembly can be minimized because the support is supported and moved within the width dimension of the lifter having the gate-shaped configuration for assembly. As described above, since the assembly of the contents of the induction machine is performed on the floor surface without hanging the assembly from above, it is possible to perform all the work in the clean house. Therefore, by adopting the assembly lifter of the present invention, it becomes unnecessary to carry in a wrecker or a gate crane for on-site assembly of the disassembling transportation induction device, and it is possible to construct a compact and economical underground SS or a building that houses the induction device. Become.
Even when the assembling lifter is moved forward and backward by hydraulic drive or manual drive instead of the electric drive, the same effect can be obtained.

[0017]

As described above, by adopting the assembly lifter according to the present invention, the iron core, coil, and
Local assembly of the contents of tanks, etc. can be performed on the floor surface in a clean house that is controlled to the same dustproof and moistureproof level as the factory assembly room. Therefore, it becomes possible to provide a disassembly-and-transport type induction electric device that sufficiently secures local assembly quality and a local assembly method that is not restricted by external weather.

The assembly lifter can be moved up and down while supporting the iron core, coil, unit, etc. by operating the hydraulic cylinder at the floor level, and can be moved in the front-back direction by the traveling device and the left and right slide adjustment of the load platform. Since it has a function, it is possible to assemble the contents with high accuracy.

Further, the traveling guide of the assembly lifter need only be temporarily fixed to the floor surface, and no extra foundation work for temporary assembly such as construction of rails exclusively for movement is required. The two left and right lifters connected by a connecting beam and a load stand can be separated, and there is no restriction on loading into the assembly room, and assembly and disassembly work can be easily done with a ceiling hook or the like.

Therefore, by adopting the assembling lifter of the present invention and the on-site assembling method, it is possible to disassemble and transport a high-voltage, large-capacity 275KV, 500KV high-capacity induction electric appliance on a general low-floor trailer, and to accompany a large-sized special trailer High cost roads and bridges will not be needed at all. It is possible to provide a method for assembling a material-saving compact disassembling induction electric device that does not have an influence on the general public such as traffic obstacles.

Furthermore, in the case where the induction electric device is stored in the basement or the building, the height of the room is reduced to a minimum, and no special equipment such as a wrecker for assembling and a gate crane is required, so that the construction cost of the substation is reduced. It is possible to reduce significantly.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view showing an embodiment of the present invention.

FIG. 3 is a plan view showing an embodiment of the present invention.

FIG. 4 is a front view showing the assembly process of the present invention.

FIG. 5 is a front view showing the assembling process of the present invention.

FIG. 6 is a front view showing the assembly process of the present invention.

[Explanation of symbols]

 1, 1a ... Assembly lifter 2, 2a ... Traveling device, electric drive unit 3, 3a ... Hydraulic cylinder, hydraulic pump unit 4, 4a ... Vertical support stand 5 ... Lifting arm 6 ... Connecting beam 7 ... Load stand 8 ... Sliding device 9 , 9a ... Supporting metal fitting, L-shaped metal fitting 10 ... Supporting pillar 11 ... Travel guide 12 ... Floor surface 13 ... Iron core unit 14 ... Coil unit 15, 15a ... Upper and lower tanks 16 ... Clean house 17 ... Dry air generator

Claims (1)

[Claims] 1. A pair of lifters, each of which includes a lower support having a traveling device that moves back and forth and an upper support that is vertically moved up and down by a hydraulic cylinder fixed to the lower support, are arranged on the left and right to connect the upper support with a beam. The inside of the lifter is fixed to the loader, and the loader spans between the upper and lower supports of the left and right lifters and is fixed by the slide device that can be adjusted to the left and right with respect to the supporter. L, which can be placed and rotated about 4 equidistant from the center of the plane of the lifter
Assembling method of disassembling and transporting induction electric device which is mounted on the traveling gate type lifter having a shape supporting metal fitting and assembled on site.