JP2017205727A - Device and method for decomposition of pcb transformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely decompose a PCB transformer which has a large size and cannot be transported.SOLUTION: A decomposition device comprises: a closed chamber 21 having a closed space; a decomposition pool 22 for a PCB transformer 1 which is provided in the closed chamber 21; a cutting machine 30 for the PCB transformer 1; and an exhaust fan 23 which discharges air in the closed chamber 21 thereby reducing a pressure. The closed chamber 21 covers a field assembly type support frame 52 with a sheet 53 thereby forming a closed space in the interior thereof. The cutting machine 30 cuts the PCB transformer 1 and decomposes the transformer into parts 19 having a size which can be transported as a backhoe 30X which is configured in such a manner that a cutter 33 is connected to a tip of a universal arm 34.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a disassembling apparatus and a disassembling method for disassembling a PCB transformer that uses PCB for insulating oil.

  Since PCB has ideal characteristics as insulating oil, an enormous amount of PCB has been used as insulating oil for transformers and high voltage transformers. However, since PCBs have extremely high carcinogenicity, their use is prohibited, and the fact is that a huge amount of PCBs are left without being discarded. In order to dispose of such a PCB, an incineration device has been developed (see Patent Document 1).

JP 2008-275179 A

  In the dismantling method of Patent Document 1, the electrical equipment containing the PCB is crushed with a crusher, the crushed electrical equipment and the PCB are separated, and the viscosity of the PCB is lowered and separated in a negative pressure state to adjust the viscosity. The main combustion chamber is connected to the heat insulation pipe provided in the separator, and the deposit combustion furnace is connected through the pipe provided in the viscosity control separator, and the exhaust gas from the main combustion chamber and the deposit combustion furnace is exhausted. House in a gas-reducing greenhouse. In this dismantling method, the electrical equipment containing the PCB is crushed, the PCB is separated, incinerated, and discarded, so a large PCB transformer of several tons to several hundred tons cannot be discarded. This is because the size of the PCB transformer that the crusher can crush is limited. For this reason, a large PCB transformer is cut by a worker with a hand saw and disassembled into small parts, and the parts are incinerated in an incinerator and discarded. Cutting with a hand saw has the disadvantage that PCBs are scattered in the atmosphere and the working environment is deteriorated. By installing the PCB transformer in the closed space and cutting it, it is possible to prevent the PCB from leaking out of the closed space. However, since the worker cuts the PCB transformer in the closed space, the working environment of the worker cannot be improved. The worker wears protective clothing, wears a dust mask, and cuts the PCB transformer with a hand saw. Even in this work environment, the work environment of the worker cannot be completely prevented due to the PCB scattered in the enclosed space. There are disadvantages that cannot be made ideal.

  Furthermore, the dismantling method of Patent Document 1 cannot crush and discard a large PCB transformer that cannot be transported to a crusher. More than 100 tons of PCB transformers are stored in power plants and substations without being discarded. In particular, since PCB has ideal physical properties as an insulating oil for transformers, it was frequently used as an insulating oil for large transformers until the use of PCB was prohibited. For this reason, at present, large PCB transformers are stored without being discarded, and a technology for safely detoxifying harmful PCB transformers is desired.

  The present invention has been developed for the purpose of solving the above drawbacks. An important object of the present invention is to provide a PCB transformer disassembling apparatus and a disassembling method for safely disassembling a large harmful PCB transformer.

Means for Solving the Problems and Effects of the Invention

The PCB transformer disassembling apparatus of the present invention is an apparatus for disassembling a PCB transformer 1 in which a transformer body 3 is immersed in insulating oil 9 in a case 2 filled with insulating oil 9 containing PCB. And having all the following configurations.
A. The demolition device 50 cuts the closed chamber 21 whose inside is a closed space, the demolition pool 22 that is disposed in the closed chamber 21 and into which the PCB transformer 1 is carried, and the PCB transformer 1 that is loaded into the demolition pool 22. And a cutting machine 30 to be disassembled, and an exhaust fan 23 that exhausts the air in the closed chamber 21 and decompresses it.
B. The closed chamber 21 includes a support frame 52 that is assembled on site, and a sheet 53 that covers the support frame 52 and serves as a closed space inside.
C. The closed chamber 21 is provided with a discharge port 21A for the cut part 19 of the PCB transformer 1, and the discharge port 21A is provided with an open / close door 28 that can keep the inside in a reduced pressure state in a closed state.
D. The cutting machine 30 is configured as a back for 30X in which a cutter 33 for cutting the PCB transformer 1 with a pair of blades 33A is connected to the tip of a free arm 34.

  Since the above-mentioned dismantling apparatus can cut a large PCB transformer on site, it has a feature that the parts cut and dismantled can be transferred to an incineration site to make the PCB harmless. In particular, at the site of cutting, there is a feature that a large PCB transformer can be safely cut and disassembled by preventing a decrease in working environment due to harmful PCB scattering. That is, the above dismantling device has a closed room at the site, a dismantling pool is provided inside the closing room, a back fore is placed, and a PCB transformer set in the dismantling pool is cut by the back for cutter. Because. Cutting the PCB transformer with a back-for cutter can significantly reduce the amount of PCB splashing into the air during cutting. This is because the back for cutter does not cut the PCB transformer with a saw blade like a hand saw operated manually, but cuts the PCB transformer with a cutter. In addition, since the operator operates the back fork arm and cutter to cut the PCB transformer, the case can also be used as an oil pan to cut the transformer body while preventing the PCB from scattering into the air. It is extremely effective in effectively preventing PCB scattering. The reason why the PCB can be prevented from splashing at the time of cutting is because the back fore can be inserted into the case with the tip of the free arm facing downward from the upper opening, and the transformer body inside the case can be cut. It is. Since the transformer body can be cut by using the PCB transformer case together with an oil pan that prevents the splash of PCB from splashing, the PCB can be cut when the transformer body is cut without providing a special cover around the PCB transformer. It is possible to effectively prevent scattering in the closed room.

  The transformer body housed in the case has a large block shape in which a conducting wire is wound around a core in which a large number of metal plates are laminated. The transformer body of this structure has a through hole in the bottom of the case, and even when the filled PCB is discharged, the PCB that penetrates between the windings and the gap between the windings and the core Remains. When this transformer body is cut with a cutter, the infiltrated PCB may be splashed and scattered. The back four has a cutter connected to the tip of the free arm, and can move the cutter in a three-dimensional manner in a free posture. The back fore of this structure can cut the transformer body by inserting a cutter into the case from the upper end opening, and can cut the transformer body by using the case as an oil pan, that is, as a scattering prevention cover. Therefore, it is possible to effectively prevent the PCB from being scattered when the transformer body is cut, and to realize a feature that can be disassembled in a safe working environment.

  Conventionally, since an operator cuts a large PCB transformer with a hand saw, it was necessary to cut the transformer body after cutting the case. This is because if the worker enters the case and cuts the transformer main body with the hand saw before the case, the PCB is scattered in the case and the working environment is further deteriorated. Since the transformer body is cut after the case is cut with the hand saw, the case cannot be used together with the oil pan when the transformer body is cut. For this reason, when a transformer main body is cut | disconnected, scattering of PCB cannot be prevented with a case.

  Since the PCB transformer is set in the dismantling pool and is cut, even if a through-hole is provided in the bottom of the case and the PCB is allowed to flow out, it is completely possible that the PCB splashes will be scattered in the closed chamber at the time of cutting. In other words, the splashing PCB splashes cause the working environment in the closed room to deteriorate. For this reason, it is very important to make the working environment safer by lowering the PCB concentration in the closed room at the time of cutting. The above dismantling device smoothly cuts the PCB transformer with a back-for cutter, reduces the scattering of the PCB in the air at the time of cutting, and also uses the case together with the oil pan to cut the transformer body This also prevents the PCB from being scattered into the closed room, so that the PCB transformer can be safely disconnected with a very small amount of PCB scattering. Furthermore, since the amount of PCB scattering into the closed room can be reduced, the concentration of PCB contained in the air in the closed room can also be reduced. For this reason, when discharging the cut parts of the PCB transformer from the closed chamber, even if the outlet of the closed chamber is opened, PCB can be less leaked to the outside in this state, and in all processes from cutting to incineration, There is a feature that the PCB can be made harmless more safely by reducing the scattering of the PCB to the outside.

  In the PCB transformer disassembly apparatus of the present invention, the running surface of the back for 30X is made higher than the bottom surface level BL of the disassembly pool 22, and the operator of the back for 30X is arranged at a position overlooking the PCB transformer 1 to be disassembled. be able to.

  In the above dismantling device, the operator of the backfor can look down on the PCB transformer from above and cut it with a cutter. For this reason, the transformer main body can be efficiently cut in the peripheral wall while leaving the peripheral wall of the case high. For this reason, it is possible to prevent the splashes of the PCB from being scattered in the air at the time of cutting, and to drop the splashes into the dismantling pool to improve the working environment of the operator of the backhoe.

  Furthermore, the PCB transformer dismantling apparatus of the present invention includes a platform 55 for the backfor 30X of the cutting machine 30 in the closed chamber 21, and this platform 55 is an inclined surface on which the backfor 30X is self-propelled to rise. 55A.

  The above dismantling apparatus can be made higher than a PCB transformer that disassembles the operator's line of sight by arranging the back fore at a position higher than the bottom surface of the dismantling pool with a simple structure. In particular, the back fore running on the caterpillar can move on the platform by moving on the inclined surface, and after the disassembly is completed, the back fore runs and descends from the platform, making it ideal for cutting large heavy machinery. There is a feature that can move conveniently to the position.

  Further, the PCB transformer disassembly apparatus according to the present invention includes a power generator 51 that supplies electric power to the cutting machine 30 as an electric back-for 30X using the cutting machine 30 as a motor as a power source, and the cutting machine 30 is closed. The power can be supplied from the generator 51 by connecting to the generator 51 arranged outside the power source 21 via the power line 54.

  The above dismantling device has a cutting machine as an electric back fore and a generator for supplying power to the back fore, so that the generator disposed outside the closed room can be connected to the back fore through the power line. The back fore can be driven by supplying power. As described above, the disassembling apparatus including the generator has a characteristic that the PCB transformer can be disassembled by driving the cutting machine with the electric power of the generator even in a disposal site without the power supply facility for driving the cutting machine. In addition, since this dismantling device uses an electric back-for as the cutting machine, it does not exhaust exhaust gas into the closed room unlike the back-for driven by the engine, and the indoor environment of the closed room with the closed structure is deteriorated. Some features can be prevented.

  The method for disassembling a PCB transformer according to the present invention is a method for disassembling a PCB transformer formed by immersing a transformer body 3 in an insulating oil 9 in a case 2 filled with insulating oil 9 containing PCB. After the support frame 52 is assembled at the disposal site of the PCB transformer 1 to be discarded, a construction process for constructing the closed chamber 21 having a closed structure by attaching a flexible plastic film 53A to the support frame 52; A self-propelled back fore 30X of a cutting machine 30 in which a cutter 33 is connected to the tip of a free arm 34 inside the closed chamber 21 and a pool installation step of disposing a waterproof structure demolition pool 22 located inside The PCB transformer 1 is disposed in the dismantling pool 22, the air in the closed chamber 21 is exhausted by the exhaust fan 23, and kept in a reduced pressure state. Comprising a cutting step of cutting the PCB transformer 1 with a cutter 33.

  The above dismantling method has a feature that a very large PCB transformer that cannot be transported to the incineration site can be safely disassembled by preventing deterioration of the working environment due to harmful PCBs flying into the air. That is, the above dismantling method is to construct a closed chamber with a sealed structure by attaching a plastic film to the support frame at the disposal site of the PCB transformer, and disposing the PCB transformer inside this closed chamber, Furthermore, the PCB transformer is cut by the back-for cutter while the air in the closed chamber is exhausted and the closed chamber is kept at a negative pressure. A method of cutting a PCB transformer set in a dismantling pool provided inside the closed chamber with a back-for cutter is provided by providing a closed chamber with a closed structure at the disposal site and holding the inside in a negative pressure state with an exhaust fan. Can be dismantled to a size that can be transported to an incinerator. Therefore, the above dismantling method is characterized in that an extremely large PCB transformer can be cut in a safe working environment, and the parts of the PCB transformer that have been cut and disassembled can be transported to an incineration site to be safely harmless.

  In particular, the above disassembling method also realizes the feature that the large PCB transformer can be cut and disassembled at the disposal site, and the PCB can be safely cut with less scattering in the air at the time of cutting. Because the cutter of the back for is not cut with a saw blade like a hand saw, the case and the transformer body can be smoothly cut with a blade, and the operator operates the back for to cut the PCB transformer. This is because the case and the transformer main body can be cut in an ideal process while the case is also used as an oil pan and prevents the PCB from being scattered in the air. The transformer body in the case can be cut without cutting the case. The operator operates the back arm's free arm and inserts the tip of the free arm into the case to cut the transformer body in the case. Because it can. When the case of the PCB transformer is also used as an oil pan and the transformer body is cut, the case can more effectively prevent the PCB from scattering, and the amount of PCB scattering into the closed chamber can be reduced. This is because the transformer body is cut from the top while the case is used as a scattering prevention cover. The transformer body becomes lower as it is cut from above. As the transformer body is cut and lowered, the case is cut and disassembled. The case is cut to a height after cutting the transformer body, while holding the upper end of the case at a position higher than the upper end of the transformer body, for example, while keeping the upper end of the case at a position higher than the upper end of the transformer body. .

  Since the PCB transformer is set in the dismantling pool and cut, the PCB flowing out at the time of cutting is collected in the dismantling pool. Even if the PCB is recovered in this state, it is extremely important to reduce the scattering of the PCB into the air during cutting. Since scattered PCBs lower the working environment in the closed room, it is important to make the working environment safer by lowering the PCB concentration in the closed room. The above dismantling device smoothly cuts the PCB transformer with a back-for cutter, reduces the scattering of the PCB in the air at the time of cutting, and also uses the case together with the oil pan to cut the transformer body Therefore, the PCB transformer can be safely cut with a very small amount of PCB scattering. In addition, since the amount of PCB scattered into the closed room can be reduced, the PCB concentration in the closed room can be considerably reduced, and the cut parts of the PCB transformer can be transferred from the closed room to the incineration channel. Even if 21A is opened, there is little leakage to the outside of the PCB in this state, and there is a feature that the PCB can be made harmless more safely by reducing the scattering of the PCB to the outside in all processes from cutting to incineration. .

  In the method of disassembling the PCB transformer according to the present invention, the backfor 30X of the cutting machine 30 is disposed at a position higher than the bottom surface level BL of the disassembly pool 22, and the operator of the backfor 30X cuts down looking at the PCB transformer 1. Can do.

  In the above dismantling method, the operator of the backfor can look down on the PCB transformer from above and cut it with a cutter, so that the operator can look down at the transformer body in the case from above and check the cutting position without cutting the case. For this reason, the transformer main body can be efficiently cut while leaving the peripheral wall of the case high. Therefore, there is a feature that the transformer body can be cut and disassembled with less scattering of the PCB in the air.

  Further, according to the method of disassembling the PCB transformer of the present invention, the platform 55 is provided in the closed chamber 21 so that the back for 30X can be moved up and down and the back for 30X is moved onto the platform 55 to cut the PCB transformer 1. can do.

  In the above dismantling method, a platform is provided inside the closed room, and the back fore is self-propelled and goes up to this platform to cut the PCB transformer, so the PCB transformer looks down at the back foresight. Can move to the ideal height to do. Therefore, the operator of the back fore is capable of efficiently cutting the transformer main body provided in the peripheral wall of the case by looking down at the extremely large PCB transformer from above. In addition, a platform 55 is provided in the closed room where the backhoe can run up and down, and the backhoe can be raised by the caterpillar on the platform 55 to raise the operator's line of sight. Features that can be realized.

  Furthermore, the method for disassembling the PCB transformer according to the present invention includes a power supply connection step in which the generator 51 is disposed outside the closed chamber 21 and the generator 51 is connected to the back for 30X through the power line 54. , Power can be supplied from the generator 51 to the back for 30X via the power line 54, and the PCB transformer 1 can be cut by the cutter 33 of the back for 30X.

  In the above dismantling method, a generator is placed outside the closed room, power is supplied to the back fore through the power line, and the PCB transformer is cut by the back for cutter, so the cutting machine is driven. Even at a disposal site where there is no power supply facility, the PCB transformer can be disassembled by driving the cutting machine with the power of the generator. In addition, since this disassembly method uses an electric backhoe as the cutting machine, the exhausted exhaust gas is not discharged into the closed room as in the case of a backhoe driven by an engine, and the indoor environment of the closed room with a closed structure is deteriorated. Some features can be prevented.

It is a schematic sectional drawing of the PCB transformer disassembled with the dismantling apparatus concerning one Example of this invention. It is a schematic sectional drawing which shows the dismantling apparatus concerning one Example of this invention. It is a schematic sectional drawing which shows the dismantling apparatus concerning one Example of this invention. It is a schematic sectional drawing of the PCB transformer processed with the dismantling method concerning one Example of this invention. It is a schematic perspective view of the PCB transformer disassembled with the disassembly apparatus concerning one Example of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment shown below exemplifies a PCB transformer disassembly apparatus and disassembly method for embodying the technical idea of the present invention, and the present invention specifies the disassembly apparatus and disassembly method as follows. do not do. Further, this specification does not limit the members shown in the claims to the members of the embodiments.

  As shown in the sectional view of FIG. 1, the PCB transformer 1 has a case 2 filled with an insulating oil 9 containing PCB, and the transformer main body 3 is immersed in the insulating oil 9. Further, the PCB transformer 1 has an output terminal 7 fixed to the upper lid portion 11 of the case 2 via an insulator 6, and the output terminal 7 and the transformer body 3 are connected by a connection line 4. Since PCB has extremely excellent characteristics as the insulating oil 9, it is also used for large transformers such as power plants, substations, factory power supply facilities, etc. Large ones are as large as several hundred tons.

  The PCB of PCB transformer 1 is vaporized by heating to 740 ° C., and the vaporized PCB is heated to 850 ° C. for 2 seconds or more to form hydrogen chloride gas, and slaked lime powder is sprayed on the hydrogen chloride gas to produce calcium chloride. The powder can be made harmless by separating the calcium chloride powder with a bag filter. In order to detoxify PCB by the above method, a dedicated incinerator is required. The large PCB transformer 1 that cannot be transported to the incinerator needs to be cut and disassembled into parts at the disposal site, and the parts must be transferred to the incinerator and incinerated. The present invention relates to an apparatus and method for disassembling a PCB transformer 1 that cannot be transported from a disposal site to an incinerator into parts.

  A schematic view of the PCB transformer 1 to be disassembled is shown in the sectional view of FIG. The case 2 of the PCB transformer 1 is a metal plate, and an upper lid 11 is fixed to a box-shaped main body case 2 that opens upward to form a sealed structure. The main body case 2 includes a rectangular bottom plate 12 and four peripheral wall portions 13, and a flange 14 is provided on the upper edge of the peripheral wall portion 13. The upper lid 11 is fixed to the flange 14 with bolts 18 to form a sealed structure. A transformer body 3 is coupled to the upper lid portion 11 via a connection line 4.

  The transformer body 3 has a block shape in which a conductive wire is wound around a core on which metal plates are laminated. The core is laminated with a metal plate such as a silicon steel plate. The winding consists of a primary winding and a secondary winding, and boosts the alternating current input to the primary winding and outputs it to the secondary winding.

  In order to insulate the transformer main body 3 from the case 2 and to conduct the heat energy generated by the transformer main body 3 to the case 2 and dissipate it to the outside, the case 2 is filled with insulating oil 9 including PCB, 3 is immersed in the insulating oil 9. PCB has extremely excellent characteristics as the insulating oil 9, but is prohibited from use because it is harmful to the human body, and the law stipulates that the used PCB transformer 1 should be made harmless and discarded.

  The transformer main body 3 is arranged away from the bottom plate 12 of the main body case 10 in order to insulate from the metal case 2. The transformer main body 3 installed away from the bottom plate 12 of the main body case 10 is hung by a connection line 4 that is also used as a hanger 7, or hung by another hanger and is placed inside the main body case 10. Be placed. The transformer main body 3 disposed away from the bottom surface of the main body case 10 is disposed so as not to contact the peripheral wall portion 13 of the case 2 and is immersed in the insulating oil 9. Some PCB transformers 1 have a spacer 8 disposed between the transformer main body 3 and the bottom of the case and support the transformer main body 3 with the spacer 8 as indicated by a one-dot chain line in the figure.

  The PCB transformer 1 disassembles harmful PCBs into small parts without splashing them around, puts the disassembled parts into a transport container, carries them to an incinerator, and incinerates them in an incinerator to render the PCBs harmless. This is because the insulating oil 9 containing PCB can be recovered and incinerated in an incinerator to render it harmless. Since the PCB transformer 1 is very large, from several tons to several hundred tons, it is necessary to disassemble and separate it into small parts and insulating oil 9, and incinerate the parts and insulating oil 9 in an incinerator to make them harmless. is there.

  In disassembling the PCB transformer 1, it is extremely important to realize safer disassembly by reducing harmful PCB scattering as much as possible, reducing deterioration of the work environment due to the PCB. In particular, since the heavy and large block-shaped transformer body 3 is disposed in the case 2, when the transformer body 3 is cut and disassembled, the splashes of the PCB are scattered outside and the working environment is deteriorated. It is important to prevent it.

  The dismantling apparatus 50 shown in FIG. 2 was set in the dismantling pool 22, the dismantling pool 22 with the inside being a confining space, the upper opening dismantling pool 22 for setting the PCB transformer 1 provided in the disclosing chamber 21 and dismantling. A cutting machine 30 that cuts and disassembles the PCB transformer 1 and an exhaust fan 23 that exhausts air in the closed chamber 21 and decompresses the air are provided. Further, the disassembling apparatus 50 illustrated in FIG. 2 includes a generator 51 that supplies power to the cutting machine 30.

  The closed room 21 is installed at a site where the PCB transformer 1 is dismantled. A dismantling pool 22 is installed at the dismantling site, and after the PCB transformer 1 is carried into the dismantling pool 22, the dismantling pool 22 is arranged inside to construct a closed room 21. This method can easily carry the large PCB transformer 1 into the dismantling pool 22. This is because the closed chamber 21 does not get in the way when the PCB transformer 1 is suspended by a large crane and enters the dismantling pool 22. However, after the closed room 21 is constructed, the PCB transformer 1 can be carried on the carriage and carried into the dismantling pool 22. Therefore, after constructing the closed room 21, the PCB transformer 1 can be carried into the dismantling pool 22 in the closed room 21.

  In the closed chamber 21, a plurality of support frames 52 are fixed in a vertical posture at regular intervals to form a support frame 52, and the support frame 52 is fixed so as to cover a sheet 53, and the inside is set as a closed space. The support frame 52 in the figure is a plurality of metal pipes curved in an arch shape, and both ends are embedded in the ground and fixed in a vertical posture. As the sheet 53, a non-breathable plastic film 53A or canvas is used. The closed chamber 21 is provided with a discharge port 21A for the cut part 19 of the PCB transformer 1, and the discharge port 21A is provided with an opening / closing door 28 that can keep the inside in a reduced pressure state in a closed state. The closed chamber 21 into which the PCB transformer 1 is carried in the constructed state is provided with a carry-in port 21B of the PCB transformer 1 at the end, and the open / close door 28 that can hold the inside in a closed state in the closed state is also provided in the carry-in port 2B. Provide.

  The closed chamber 21 is connected to an exhaust fan 23 so that internal air does not leak to the outside when the open / close door 28 is closed. The exhaust fan 23 is connected to a PCB removal filter 24. The exhaust fan 23 sucks air in the closed chamber 21 to keep the inside at a negative pressure, passes the sucked air through the PCB removal filter 24, and removes PCB contained in the air with the PCB removal filter 24. Discharge to the outside as clear air.

  External air flows into the negative pressure closed chamber 21, but internal air does not leak to the outside. Since the air in the closed chamber 21 passes through the PCB removal filter 24 and is discharged to the outside, the air in the closed chamber 21 containing PCB is not discharged to the outside. As the PCB removal filter 24, a filter that sandwiches or removes PCB contained in air, such as an activated carbon filter, is used. The closed chamber 21 opens the opening / closing door 28 of the carry-in port 21B, loads the PCB transformer 1 into the interior, opens the discharge port 21A, and unloads the parts 19 in the transfer container 25, and opens the carry-in port 21B. In addition, outside air is sucked from the discharge port 21A, and even in this state, the PCB is prevented from flowing out.

  The dismantling pool 22 has a box shape that opens upward, and has a waterproof structure with a water retaining sheet laid on the inner surface of a metal plate such as an iron plate. The demolition pool 22 having a waterproof structure is inclined downward so that it can be recovered without leaking outside the PCB discharged from the PCB transformer 1. The dismantling pool 22 is provided with a collection unit 22B for the insulating oil 9 containing PCB discharged from the PCB transformer 1. The PCB stored in the collection unit 22B is sucked by the discharge pump 26 and transferred to a storage tank 27 provided outside. The bottom plate 22A of the dismantling pool 22 is inclined downward toward the recovery unit 22B so that a liquid containing PCB can flow toward the recovery unit 22B. 2 disposes the bottom plate 22A of the dismantling pool 22 on a flat ground surface and supports the bottom plate 22A on the ground surface 29. The demolition pool 22 has a feature that it is possible to prevent the PCB from leaking due to damage to the bottom plate 22A because the heavy PCB transformer 1 is placed on the bottom plate 22A and deformation of the bottom plate 22A can be prevented.

  In the closed chamber 21, a platform 55 for the back for 30X of the cutting machine 30 is provided. The platform 55 is provided at a position where the backfor 30X mounted thereon can cut the PCB transformer 1 of the dismantling pool 22. The platform 55 is set at a position where the operator of the backfor 30X can be raised to look down on the PCB transformer 1, so that the platform 55 is, for example, 50 cm or more, preferably 1 m or more, more preferably 1.2 m or more. The optimum value is set in consideration of the size of the PCB transformer 1 to be processed. An operator who cuts the PCB transformer 1 on the mounting table 55 has a feature that it can efficiently cut down looking at the PCB transformer 1. In particular, the transformer body 3 housed in the case 2 is positioned so that the transformer body 3 can be cut from the top while leaving the case 2, and the case 2 is used as a splash prevention cover to reduce PCB scattering. Can be cut.

  As described above, the dismantling pool 22 is installed on the ground 29 of the closed chamber 21, the back for 30 X of the cutting machine 30 is placed on the platform 55, and the dismantling device 50 that raises the operator's line of sight digs down the ground 29. Thus, it is not necessary to install the dismantling pool 22, and the operator's line of sight can be easily made higher than the bottom plate 22A of the dismantling pool 22. However, the dismantling device digs down the ground and builds a dismantling pool without providing a platform, or constructs a dismantling pool at the lower level of the step surface and runs the cutting machine back foreground to the operator's You can also increase your line of sight.

  2 is provided with an inclined surface 55A on which the backfor 30X of the cutting machine 30 can self-propelled by the caterpillar 36 and get on and off. Since the back fore 30X runs on and off the caterpillar 36 on the platform 55, it is not necessary to place a heavy heavy machine back fore 30X on the platform 55, and the back fore 30X can be easily moved to the optimum position. .

  The cutting machine 30 is a back-for 30X, and a cutter 33 for cutting the PCB transformer 1 with a pair of blades 33A is connected to the tip of the free arm 34. The back fore 30X of the cutting machine 30 is an off-the-shelf heavy machine that is already on the market, and a cutter 33 of the PCB transformer 1 is connected to the tip of the free arm 34. The back fore 30X is provided with an operator chamber 32 on a base 31, and further, a free arm 34 and a holding arm for holding the PCB transformer 1 in a fixed position so that the base 31 can rotate on a horizontal plane. 35 is connected. The cutting machine 30 having the holding arm 35 has a feature that the PCB transformer 1 is sandwiched and disposed at a fixed position so that the cutting can be reliably performed. However, the cutting machine does not necessarily need to be provided with a holding arm, and can be cut with a cutter by installing a PCB transformer.

  The backfor 30X is provided with a caterpillar 36 that can run on the base 31. The back fore 30 </ b> X cuts the PCB transformer 1 with the cutter 33 while moving to the optimum position by self-propelled by the caterpillar 36.

  The cutting machine 30 shown in FIG. 2 is an electric back-for 30X having a power source as a motor. In the dismantling apparatus 50 shown in the figure, a generator 51 that supplies electric power to the electric back fore 30X is disposed outside the closed chamber 21. The backfor 30 </ b> X is connected to the generator 51 via the power line 54 and is driven by the power supplied from the generator 51. As described above, the disassembly apparatus 50 including the generator 51 can disassemble the PCB transformer 1 by driving the cutting machine 30 with the electric power of the generator 51 even at a disposal site where a power source for driving the cutting machine 30 is not provided. There are features.

  The back for 30X of the cutting machine 30 is an off-the-shelf electric back for which uses a motor driven by power supplied from the outside as a power source. The cutting machine 30 of the back for 30X using a motor as a power source does not discharge exhaust gas into the closed chamber 21 unlike the back fore driven by the engine, and is disposed in the closed chamber 21 of the closed structure to draw indoor air. No contamination with exhaust gas. However, the cutting machine is not necessarily an electric heavy machine, and a heavy machine using an engine as a power source can also be used. In this case, in order to prevent the air in the closed room from being polluted by the exhaust gas discharged from the engine, the exhaust gas discharged into the closed room can be efficiently discharged outside the closed room by increasing the capacity of the exhaust fan. Can be discharged. Alternatively, an exhaust hose is connected to the exhaust pipe of the engine, and the exhaust hose is extended to the outside of the closed chamber and drawn out, thereby exhausting the exhaust gas discharged from the engine to the outside of the closed chamber. It is also possible to prevent the air from being contaminated.

  The base 31 is provided with a caterpillar 36 on both sides. The caterpillars 36 on both sides are driven by motors separately. Both the caterpillars 36 are driven in the same direction, the base 31 moves back and forth, the caterpillars 36 on both sides are driven in opposite directions, rotate in a horizontal plane, and the drive speed of the left and right caterpillars 36 is changed. The direction of movement is changed.

  The operator room 32 is closed so that the air in the closed room 21 is not ventilated. A chair 37 is provided in the operator room 32, and an operation lever 38 that controls the caterpillar 36, the holding arm 35, the universal arm 34, and the cutter 33 of the base 31 is operated by an operator sitting on the chair 37. It is provided inside. The operation lever 38 is connected to the control mechanism 39, and the operator operates the operation lever 38 to control the movement of the base 31, the universal arm 34, and the cutter 33 with the control mechanism 39.

  The holding arm 35 extends forward from the base 31 and sandwiches the PCB transformer 1 carried into the dismantling pool 22, and is disposed at a fixed position. Therefore, the holding arm 35 includes a clamping arm 35A that clamps the PCB transformer 1 at the tip.

  The universal arm 34 includes a boom 34A connected to the base 31 so as to be rotatable and tiltable, an arm 34B connected to the tip of the boom 34A, and a cutter connected to the tip of the arm 34B. 33. The arm 34B is connected to be able to tilt with respect to the boom 34A, and the cutter 33 is connected to be able to tilt with respect to the arm 34B. The boom 34A is rotated in a horizontal plane by an actuator (not shown) such as a hydraulic motor, and is tilted in a vertical plane by an actuator such as a hydraulic cylinder. Further, the arm 34B and the cutter 33 are also tilted by an actuator (not shown) such as a hydraulic cylinder.

  The cutter 33 is generally commercially available as one of the attachments that are detachably exchanged and connected to the tip of the arm 34B as the steel cutter 33 for cutting the steel frame. The cutter 33 includes a blade 33A that cuts the metal plate of the case 2 and the winding of the transformer body 3 and the metal plate of the core. The blade 33 </ b> A is provided with a sharp blade edge at the edge of the blade that cuts the PCB transformer 1. The cutter 33 can freely change the direction and the inclination angle, guides the transformer main body 3 and the case 2 in a V-shaped open state, closes the blade 33A, and cuts the blade by sandwiching it at the edge of the blade. The cutter 33 can be transferred to the transport container with the cut parts sandwiched in a state where the parts are not cut. The cutter 33 is opened and closed by a hydraulic cylinder (not shown) of an actuator, and is cut by sandwiching the case 2 and the transformer body 3 of the PCB transformer 1 and is transported by being sandwiched without being cut.

  For the cutter 33, for example, a general-purpose steel cutter commercially available as an attachment capable of cutting H steel of about 300 mm to 500 mm is used, and the case 2 and the transformer main body 3 are reliably cut. The steel cutter is inserted through the upper opening of the case 2 and cuts the transformer body 3 in the case 2 while leaving the peripheral wall 13 of the case 2. select. Therefore, the cutter 33 is an optimum one for the size of the PCB transformer 1 to be cut, a small steel cutter is used as a cutter for cutting a small PCB transformer, and a cutter for cutting a large PCB transformer is used. Use a large steel cutter.

  The free arm 34 rotates the boom 34A in a horizontal plane, and further tilts the boom 34A, the arm 34B, and the cutter 33, and moves the cutter 33 at the front and rear, right and left and up and down to cut the PCB transformer 1. . The position of the cutter 33 is controlled by a control mechanism 39 that connects the operation lever 38. In the above cutting machine 30, the operator operates the operation lever 38, and the operation lever 38 controls an actuator such as a hydraulic motor or a hydraulic cylinder via the control mechanism 39, so that the position, posture, and cutting state of the cutter 33 are changed. And the case 2 and the transformer body 3 of the PCB transformer 1 are cut. The above cutting machine 30 can cut the PCB transformer 1 with the cutter 33 and can move to a free position with the cutter sandwiched therebetween. Accordingly, the cutting machine 30 holds the PCB transformer 1 at a fixed position of the dismantling pool 22, cuts it into an optimal size and shape for transfer in the transfer container 25, and further cuts the cut parts into the transfer container. Can be transported to. Moreover, since the ready-made backfor 30X produced in large quantities is used for the cutting machine 30 and the general-purpose steel cutter 33 is used, both the manufacturing cost and the running cost of the cutting machine 30 can be reduced, and a failure is caused. Sometimes it has the feature that it can be repaired quickly using commercially available parts.

  The PCB insulating oil 9 leaking from the PCB transformer 1 to be cut accumulates at the bottom of the dismantling pool 22. The PCB insulating oil 9 discharged to the dismantling pool 22 is sucked by the discharge pump 26 and transferred to a storage tank 27 provided outside.

  The parts obtained by cutting the PCB transformer 1 are transferred to the incinerator 40 from the closed chamber 21 by being put in the transport container 25 as shown in FIG. The transport container 25 is a box shape that can accommodate a plurality of cut parts 19 inside and can be transported by a vehicle 59 or a ship, and the transport container 25 has a rectangular box shape. The transport container is arranged close to the side of the dismantling pool 22 in a state where the PCB transformer 1 is cut. The parts of the PCB transformer 1 cut by the cutter 33 of the cutting machine 30 are sandwiched and supplied to the transport container 25. The transport container 25 supplied with the parts 19 is taken out of the closed chamber 21 and transported to the incinerator 40 by a vehicle 59 or the like. The transport container 25 is made of heat-resistant metal that can be incinerated with the parts 19 of the PCB transformer 1. The closed chamber 21 is provided with a discharge port 21 </ b> A through which the transport container 25 containing the PCB transformer 1 can be taken out and transferred to the incinerator 40. The discharge port 21 </ b> A is provided with an opening / closing door 28 so that it can be closed in the process of cutting the PCB transformer 1. The open / close door 28 opens the discharge port 21 </ b> A when carrying the transport container 25, and closes the discharge port 21 </ b> A in the step of cutting the PCB transformer 1.

  The parts 19 of the PCB transformer 1 transported to the incinerator 40 are incinerated while being put in the transport container 25 or are taken out from the transport container 25 and incinerated. PCBs are incinerated and pyrolyzed to make them harmless. The incinerator 40 heats and vaporizes the parts 19 of the PCB transformer 1 and the insulating oil 9, and incinerates the vaporized PCB to render it harmless. PCB is heated at 850 ° C. or higher for 2 seconds or more, and is thermally decomposed to be rendered harmless. In order to completely detoxify the PCB, the incinerator 40 is incinerated at an incineration temperature at which the PCB contained in the PCB transformer 1 can be detoxified, for example, 850 ° C. or higher.

  The PCB transformer 1 cuts the bottom part of the case 2 with the cutter 33 of the back for 30X and causes the PCB in the case 2 to flow into the disassembly pool 22, and then cuts and disassembles the transformer body 3 and the case 2. The PCB transformer 1 flows out of the PCB from the case 2 and then cuts and disassembles the transformer main body 3 and the case 2. However, the PCB remains attached to the inner surface of the case 2 and adheres to the gap between the transformer main body 3. And remain. Therefore, when the transformer body 3 is cut, the remaining PCB is disassembled while preventing the remaining PCB from scattering into the closed chamber 21. In disassembling the PCB transformer 1, the transformer body 3 and the case 2 are disassembled preferably after the PCB has flowed out. However, since the present invention can cut the PCB transformer 1 with less PCB scattering, the PCB in the case 2 can be completely discharged without leaving the PCB at a predetermined depth, for example, at the bottom, or The transformer body 3 can also be cut in a state of being immersed in the PCB.

  The PCB transformer 1 is cut so that the PCB can be made harmless by being incinerated in the incinerator 40. As shown in the sectional view of FIG. 4, the small PCB transformer 1 is incinerated by providing an opening 41 in the upper lid portion 11 of the case 2 and the peripheral wall portion 13 which is a side surface without cutting the transformer main body 3. The opening 41 provided in the upper lid portion 11 and the peripheral wall portion 13 is used to efficiently heat the transformer main body 3 and completely detoxify the PCB in the case 2 when incinerated in the incinerator 40. And a plurality of the peripheral wall portions 13 are provided. The opening portion 41 of the upper lid portion 11 is provided between and outside the output terminals 5 to smoothly discharge the combustion gas flowing into the case 2 from the opening portion 41 on the side surface of the case 2 during incineration. Can be heated efficiently. Further, the opening 41 on the side surface is provided at the bottom of the peripheral wall portion 13 to discharge the PCB to the outside, and further, the combustion gas flows into the case 2 to heat the transformer body 3. The opening 41 on the side surface is provided around the case 2 and heats the transformer body 3 from the surroundings with the combustion gas flowing in from here. Combustion gas convection in the case 2 heats the case 2 and the transformer main body 3 and incinerates the PCB remaining without being discharged from the case 2 to make it harmless.

  As shown in FIG. 4, the method of incineration by providing the opening 41 in the PCB transformer 1 incinerates the PCB without disassembling the case 2 or the transformer body 3, so that the PCB transformer 1 can be easily cut. it can. However, since this method requires an incinerator 40 large enough to be carried in without disassembling the case 2, the PCB transformer 1 larger than the incinerator 40 disassembles both the case 2 and the transformer body 3. The parts 19 are disassembled, and the parts 19 are put into the transport container 25 and incinerated in the incinerator 40 to detoxify the PCB attached to the parts 19.

  The PCB transformer 1 disassembled into small parts and incinerated in the incinerator 40 separates the transformer main body 3 from the upper lid portion 11 of the case 2 and cuts and disassembles the transformer main body 3 and the case 2. As shown in the cross-sectional view of FIG. 1, the PCB transformer 1 arranged with the transformer main body 3 separated from the bottom surface of the case cuts the connection line 4 connecting the transformer main body 3 and the upper lid portion 11, The main body 3 is separated from the case 2. In the PCB transformer 1, when the connection line 4 is cut, the transformer body 3 falls on the bottom plate 12 of the case 2, and the PCB is scattered in the air in the closed chamber 21 by the impact of the drop, so the transformer body 3 is lowered smoothly. After that, the connection line 4 is cut to prevent the PCB from scattering. In particular, the large PCB transformer 1 is lowered slowly without dropping the transformer body 3 because the PCB is scattered by the impact when the heavy transformer body 3 falls to the bottom surface and the surrounding environment is deteriorated.

  A state in which the transformer body 3 is slowly lowered and separated from the case 2 is shown in FIGS. In the method shown in these figures, the upper lid 11 is not separated from the main body case 10, and a part of the case 2 is cut and opened by the cutter 33, and the cutter 33 is inserted into the case 2 from the opening 15. Then, the connection line 4 is disconnected. At this time, the hinge portion 16 is left on the upper lid portion 11 and a part of the case 2 is cut, the hinge portion 16 is bent, and the suspended transformer body 3 is lowered to the bottom surface of the case 2 so Prevent scattering.

  As shown in FIG. 5, the PCB transformer 1 of FIGS. 1 and 5 cuts the upper lid portion 11 with a cutter 33 along the cutting line 17 while leaving the hinge portion 16 in a part of the upper lid portion 11 of the case 2. . The upper lid portion 11 in FIG. 5 is quadrangular, and is cut by a U-shaped cutting line 17 along the outer peripheral edge, and one side that is not cut is used as the hinge portion 16. The hinge portion 16 on one side that is not cut controls the bending strength by adjusting the length. The hinge portion 16 is lengthened to increase the bending strength, and conversely the hinge portion 16 is shortened to reduce the bending strength. The bending strength of the hinge part 16, that is, the length of the hinge part 16 is set so that the hinge part 16 is bent by the weight of the transformer body 3 and the transformer body 3 can be smoothly lowered.

  The method of smoothly lowering the transformer body 3 by deforming the hinge portion 16 by the weight of the transformer body 3 can lower the transformer body 3 to the bottom surface of the case 2 most easily. In this method, the upper lid portion 11 is cut along the cutting line 17 to shorten the hinge portion 16 gradually. In order to shorten the hinge part 16 gradually, the hinge part 16 is cut | disconnected from the edge part toward the center. As the hinge portion 16 becomes shorter, the bending strength of the hinge portion 16 gradually decreases. When the bending strength gradually decreases and the transformer body 3 is deformed by its own weight, the hinge portion 16 is bent, and the transformer body 3 gradually descends.

  The hinge portion 16 may have a bending strength that does not deform due to its own weight. The hinge portion 16 presses the upper lid portion 11 from above to deform the hinge portion 16, and lowers the transformer body 3 to the bottom surface of the case 2. In this method, the speed at which the transformer main body 3 is lowered to the bottom surface of the case 2 can be controlled by the pressure and speed at which the upper lid portion 11 is pressed from above. Therefore, the transformer body 3 can be lowered in an optimum state.

  The hinge portion 16 is bent to lower the transformer body 3 to the bottom surface of the case 2, and then the connection line 4 is cut to separate the transformer body 3 from the case 2. In order to cut the connection line 4, the case 2 is cut by the first cutting line 17A and the second cutting line 17B as shown in FIG. The first cutting line 17A is provided by cutting the boundary portion between the peripheral wall portion 13 and the upper lid portion 11 of the case 2 in the horizontal direction. As shown in FIG. 5, the first cutting line 17 </ b> A is preferably provided in a U shape along the outer peripheral edge of the upper lid portion 11. The U-shaped cutting line 17 cuts the upper lid portion 11 while leaving the hinge portion 16, and is bent at the hinge portion 16 to lower the transformer main body 3.

  The 2nd cutting line 17B is provided so that the corner part of the surrounding wall part 13 may be extended in an up-down direction from an upper end. The peripheral wall portion 13 whose both sides are cut in the vertical direction along the second cutting line 17B is bent back so as to open the side surface of the case 2 as shown by a chain line in FIG. A cutter 33 is inserted into the case 2 from the opening 15 to cut the connection line 4. As shown in FIG. 2, the bottom level BL of the dismantling pool 22 is made lower than the running surface 29X of the back for 30X, and the operator of the back for 30X cuts the PCB transformer 1 while looking down at the PCB transformer 1. The upper cover 11 can be cut by the cutter 33 and the connection line 4 can be cut without bending the peripheral wall 13 of the case 2 as shown by the chain line in FIG.

  The PCB transformer 1 separated from the case 2 by cutting the connection line 4 is disassembled by cutting the transformer main body 3 while using the case 2 as a scattering prevention cover while the operator of the backfor 30X looks down on the PCB transformer 1. . The operator looks into the case 2 from the opening 15 above the case 2 and cuts and disassembles the transformer body 3 from above. When the upper part of the transformer body 3 is cut so that the upper end of the transformer body 3 is lower than the upper end of the peripheral wall part 13, and the peripheral wall part 13 becomes an obstacle to see the cut part of the transformer main body 3, the operator cuts the transformer main body 3. The peripheral wall part 13 is cut | disconnected from the top to the position which can confirm a part. The peripheral wall portion 13 prevents the PCB from being scattered around when the transformer body 3 is cut, so that the cut portion of the transformer body 3 can be confirmed, but the transformer body 3 to be cut is cut and the PCB is scattered around. Cut while maintaining a height that can be prevented. Since the operator can look into the inside of the case 2 from the upper opening 15 of the peripheral wall 13 and cut the transformer main body 3, the operator can cut the transformer main body 3 while holding the peripheral wall 13 higher than the transformer main body 3. Therefore, the operator alternately cuts the transformer main body 3 and the peripheral wall portion 13 of the case 2, but can always cut and disassemble the transformer main body 3 while maintaining the peripheral wall portion 13 of the case 2 higher than the transformer main body 3. . Therefore, the transformer body 3 can be cut and disassembled while always using the peripheral wall of the case 2 as a scattering prevention cover. After the peripheral wall portion 13 of the case 2 is cut, the bottom surface of the case 2 is finally cut by the cutter 33 and disassembled.

  The operator of the back for 30X cuts the case 2 and the transformer body 3 with the cutter 33 and separates them into small parts 19, and then puts the parts 19 into the transport container 25 with the cutters 33 interposed therebetween, so that the parts 19 do not interfere with the cutting. Thus, the transformer body 3 and the case 2 are cut. The transport container 25 supplied with a predetermined amount of parts 19 is transferred to the incinerator 40 from the closed chamber 21 by opening the discharge port 21A of the closed chamber 21 after interrupting the cutting by the back for 30X. The insulating oil 9 containing PCB in the case 2 is recovered and sent to the incinerator 40 through the piping and incinerated.

  The PCB transformer disassembling apparatus and disassembling method of the present invention is to safely detoxify a large number of PCB transformers stored without being discarded by cutting the PCB transformer and incinerating it in an incinerator to make it harmless. Used effectively.

DESCRIPTION OF SYMBOLS 1 ... PCB transformer 2 ... Case 3 ... Transformer main body 4 ... Connection line 5 ... Output terminal 6 ... Insulator 7 ... Suspension tool 8 ... Spacer 9 ... Insulating oil 10 ... Main body case 11 ... Top cover part 12 ... Bottom plate 13 ... Perimeter wall part 14 ... Flange 15 ... Opening part 16 ... Hinge part 17 ... Cutting line 17A ... First cutting line 17B ... Second cutting line 18 ... Bolt 19 ... Part 21 ... Closed room 21A ... Discharge port 21B ... Inlet 22 ... Dismantling pool 22A ... Bottom plate 22B ... Recovery unit 23 ... Exhaust fan 24 ... PCB removal filter 25 ... Transport container 26 ... Discharge pump 27 ... Storage tank 28 ... Open / close door 29 ... Ground 29X ... Traveling surface 30 ... Cutting machine 30X ... Back for 31 ... Base 32 ... Operator room 33 ... Cutter 33A ... Cutlery 34 ... Swivel arm 34A ... Boom 34B ... Arm 35 ... Holding arm 35A ... Clamping arm 6 ... Caterpillar 37 ... Chair 38 ... Operation lever 39 ... Control mechanism 40 ... Incinerator 41 ... Opening 50 ... Dismantling device 51 ... Generator 52 ... Support frame 53 ... Sheet 53A ... Plastic film 54 ... Electric power line 55 ... Platform 55A ... Inclined surface 59 ... Vehicle BL ... Bottom level

Claims (8)

A PCB transformer dismantling device in which a transformer body is immersed in insulating oil in a case filled with insulating oil containing PCB,
A PCB transformer dismantling apparatus having all the following configurations.
A. The demolition device includes a closed chamber having a closed space inside, a demolition pool that is disposed in the closed chamber and into which a PCB transformer is carried, a cutting machine that cuts and deconstructs the PCB transformer that is loaded into the demolition pool, And an exhaust fan for exhausting the air in the closed chamber and reducing the pressure.
B. The closed chamber is composed of a support frame assembled in the field and a sheet that covers the support frame and forms a closed space inside.
C. The closed chamber includes an outlet for the cut parts of the PCB transformer, and the outlet is provided with an opening / closing door capable of maintaining the inside in a reduced pressure state in a closed state.
D. The cutting machine is a back fork formed by connecting a cutter that cuts a PCB transformer with a pair of blades at the tip of a free arm. A device for disassembling a PCB transformer according to claim 1,
A PCB transformer dismantling apparatus, wherein a running surface of the backfor is higher than a bottom surface level of the dismantling pool, and an operator of the backfor is disposed at a position overlooking a PCB transformer to be dismantled. A device for disassembling a PCB transformer according to claim 2,
A PCB transformer disassembling apparatus, comprising: a back-foam platform for the cutting machine in the closed chamber; and the mount platform has an inclined surface on which the back-for self-runs and rises. A PCB transformer dismantling apparatus according to any one of claims 1 to 3,
Furthermore, the power generator is provided with an electric power supply for supplying electric power to the cutting machine, and the cutting machine is an electric back fore that uses a power source as a motor, and an electric power line is provided to the generator arranged outside the closed chamber. A transformer for disassembling a PCB transformer, wherein power is supplied from the generator. A method for disassembling a PCB transformer in which a transformer body is immersed in insulating oil in a case filled with insulating oil containing PCB,
After assembling the support frame at the disposal site of the PCB transformer to be discarded, a construction process for constructing a closed chamber having a closed structure by attaching a flexible plastic film to the support frame;
A pool installation step of disposing a waterproof demolition pool located inside the closed chamber;
A step of moving the back fore of a cutting machine formed by connecting a cutter to the tip of a free arm to move inside the closed chamber,
A PCB transformer comprising: a cutting step of disposing a PCB transformer in the dismantling pool, exhausting the air in the closed chamber with an exhaust fan and maintaining the pressure-reduced state, and cutting the PCB transformer with the back-for cutter. Transformer dismantling method. A method for disassembling a PCB transformer according to claim 5,
A method for disassembling a PCB transformer, wherein the back fore of the cutting machine is arranged at a position higher than a bottom surface level of the dismantling pool, and an operator of the back fore is cut while looking down at the PCB transformer. A method for disassembling a PCB transformer according to claim 6,
The back room is provided with a platform that can be moved up and down in the closed room,
A method of disassembling a PCB transformer, wherein the back fore moves onto the platform and cuts the PCB transformer. A method for disassembling a PCB transformer according to any one of claims 5 to 7,
A power supply connecting step of disposing a generator outside the closed room and connecting the generator to a back fore through a power line;
A method of disassembling a PCB transformer, wherein in the cutting step, power is supplied from the generator to the back fore via the power line, and the PCB transformer is cut by a cutter of the back for.

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