JP2009297602A - Apparatus for pumping-out oil from pcb-containing transformer or the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for pumping-out oil from a PCB-containing transformer or the like, which has a semi-automated configuration, thereby, can be easily attached to a transformer, a capacitor and a pole-transformer without discriminating them, and perform perforation, pumping-out of oil, cleaning and plugging operations in a series in a closed state. <P>SOLUTION: The apparatus for pumping-out oil from the PCB-containing transformer or the like comprises: a tight-closure device for tightly closing and covering a perforation part and a step drill 19; a drilling device 1 provided with a stop plug supplying device for supplying a stop plug 33 which closes the perforation part; and a loop pipe 60 for cleaning, a transfer pipe 63 and a vent pipe 61 connected with the drilling device 1, whereby the perforation, pumping-out of oil, cleaning and plugging operations are performed in a closed state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an oil draining device from a PCB-containing transformer and a capacitor (hereinafter referred to as “PCB-containing transformer etc.”), and more particularly to a PCB-containing transformer and a capacitor oil removing device that do not require a glove box or the like.

  In general, in the oil removal equipment for PCB-containing transformers and condensers and pole transformers, if the existing oil removal valve can be used, drain the liquid from the existing valve, and if there is no valve or the oil removal valve cannot be used The transformer is partially drilled and drained from the upper part, and the condenser is placed in the glove box, and the liquid is drained by human hand work.

As such a prior art, there exists a thing described in patent document 1, etc., for example. In this technique, the liquid is drained using a jig having a communication hole with the outside.
JP 2002-192136 A

  In the above-mentioned oil draining work, manual work by humans is mainly used, so a glove box installation space is required for work inside the glove box, and a glove back method (a cover with gloves attached around the oil draining part is required). In the method of limiting the diffusion range), there is a risk that the glove back may be damaged by being hooked on the periphery and the worker may be contaminated with the PCB.

  The present invention has been made in view of such circumstances, and constitutes a semi-automated oil removal device, whereby the housing can be easily attached without distinction of a transformer, a capacitor, a pole-mounted transformer, etc. In a sealed state, drilling, oil removal, cleaning and plugging can be performed as a series of operations, allowing humans to easily work close to the object to be processed, and without using a glove box. It is an object of the present invention to provide an oil removal apparatus such as a PCB-containing transformer that can be easily and reliably attached and that can greatly improve efficiency.

  In order to achieve the above object, in the present invention, a reversing device that rotatably supports a housing of a transformer and a capacitor containing PCB in a vertical posture and a rollover posture around a horizontal axis, and the reversing device is provided. A clamping device for gripping a transformer and a capacitor, a drill provided in the clamping device, for drilling a side wall of the housing at a position higher than a liquid level of the PCB, and a drilling portion of the drill and the surface of the housing A sealing device for sealing and sealing, a drilling device connected to the sealing device, and provided with a stopper plug supply device for supplying a stopper plug to be loaded in a hole drilled in the housing, and connected to the punching device An oil draining device such as a PCB-containing transformer is provided.

  According to the present invention, an oil removal device can be easily attached without distinguishing between a transformer, a capacitor, and a pole transformer, and a series of drilling, oil removal, washing, and closing plug operations can be performed in a sealed state, and the work can be performed in a sealed state. Therefore, a human can easily work close to the object, and there is little risk of environmental contamination, and the stopper plug can be easily and reliably attached without exposing the opening. Therefore, the work can be performed without using a glove box, and the efficiency can be greatly improved. Furthermore, mechanical operation is also possible.

  Hereinafter, an embodiment of an oil removal apparatus such as a PCB-containing transformer according to the present invention will be described with reference to the drawings. In the following embodiments, a configuration in which the PCB is deoiled from the housing of the capacitor will be described, but the same configuration can be adopted for deoiling from the housing of the transformer.

  FIG. 1 is a schematic configuration diagram showing the overall configuration of the apparatus as viewed from the side.

  As shown in FIG. 1, an oil removal apparatus 100 according to this embodiment includes a frame structure 102 for supporting an apparatus installed on a work floor 101, a base 3 mounted on the frame structure 102, and a hydraulic pipe 104. Etc. are constituted.

  On the base 3, a reversing device 7 for mounting a capacitor provided with a drilling device 1 and a clamping device 2 as main components is installed. The drilling device 1 has a sealed structure including a drill that can be operated by an operator's manual operation or mechanical operation.

  The clamp device 2 is installed to be extendable and retractable by an air cylinder so that the height that the capacitor C holds in an upright posture can be adjusted.

  The reversing device 7 has a configuration in which a plurality of, for example, two capacitors C (C1, C2) can be mounted at the same time in order to perform work efficiently and sequentially. That is, the reversing device 7 supports the casing of the capacitor C so as to be rotatable about a horizontal axis between an upright posture and a rollover posture. Specifically, for example, two capacitors C1 and C2 can be simultaneously mounted on two reversing devices 7 (7a and 7b), respectively, and oil can be drained sequentially and efficiently. (7a, 7b) are respectively installed so as to be deployable to the left and right via horizontal rotating shafts 6 (6a, 6b). FIG. 1 shows a state in which one reversing device 7a is supported in an upright posture by a solid line and a rollover posture by a virtual line, and a state in which the other reversing device 7b is supported in a rollover posture.

  By adopting such a configuration that can be alternately reversed, it is possible to perform the oil removal operation of the capacitor C2 in the rollover posture in which the drilling operation has already been completed while performing the drilling operation of the capacitor C1 in the upright posture. .

  FIG. 2 is a configuration diagram showing a simplified side configuration of the reversing device 7 for mounting a capacitor. The reversing device 7 (7a, 7b) is supported on a horizontal base 3 via a support 5 (5a, 5b). That is, a pair of support bases 55 (5a, 5b) are provided on the base 3 at a certain interval in the horizontal direction, and each of these support bases 5 (5a, 5b) has a horizontal rotating shaft. A substantially L-shaped reversing device 7 (7a, 7b) having a clamping device 2 (2a, 2b) is supported via 6 (6a, 6b) so as to be rotatable in the left-right direction. The interval between the support bases 5 (5a, 5b) is set to an interval at which the pair of capacitors C1, C2 can be supported and rotated relative to each other. And it is the structure which can be rotated 90 degree | times to the left-right direction (arrow a, b) with the drive mechanism not shown in figure.

  Capacitors C1 and C2 are mounted on the reversing devices 7 (7a and 7b), respectively. As will be described later, holes are sequentially drilled by the drilling device 1, and a stopper plug 33 is mounted after oil removal and cleaning.

  FIG. 3 is a side view showing the hole punching device 1, and FIG. 4 is a plan view thereof. FIG. 5 is a side view of FIG. 3 as seen from the side of the capacitor C.

  FIG. 6 shows an operation explanatory diagram of the slide box 23. 6A shows a state before the slide box 23 slides and the punching device 1 is pressed against the capacitor C, and FIG. 6B shows a pressed state.

  FIG. 7 shows an operation explanatory diagram of the hole punching device 1. 7A shows a state in which the toggle bar 26 is not tilted and the step drill 19 is included in the outer cylinder, and FIG. 7B shows a state in which the toggle bar 26 is tilted and the step drill 19 protrudes.

  As shown in FIGS. 3 and 4, the drilling device 1 uses, for example, a short gun-shaped variable speed drill 13 held by an operator as a driving device.

  The drilling device 1 is supported by a frame 20 having a horizontal upper surface installed on the clamp device 2, a slide rail 24 having a horizontal upper surface installed on the frame 20, and a slide box 23 that slides on the slide rail 24. Yes.

  As shown in FIGS. 3 and 6, the drilling device 1 rotates horizontally on the slide rail 24 together with the slide box 23 by rotating the pressing bolt 25 attached to the slide box 23, and through the socket packing 29. Is pressed against the capacitor C and adheres closely to the perforated surface.

  A clamp 15 that can hold and release a tool such as a screwdriver or a drill and shafts by a manual operation is provided at the tip of the variable speed drill 13.

  The variable speed drill 13 is connected to a shaft 51 into which the hexagonal bar 16 is inserted by a hexagonal bar 16 gripped and fixed to the clamp 15, and transmits a rotational force to a step drill 19 attached to the tip of the shaft 51.

  The shaft 51 is rotatably supported by a bearing (not shown) provided on the guide rod 17 and the piston 18.

  The shaft 51 is sealed by a sealing device including the guide rod 17, the outer cylinder 50, the seal block 28, and the like.

  Further, the shaft 51 is provided with a piston 18 coaxially. The piston 18 is slidably supported by the outer cylinder 50, and at the same time as the guide rod 17 and the shaft 51 move back and forth in the outer cylinder with high precision. It is possible to advance and retreat along the axial direction of 18 and keeps the sealing property against the guide rod 17 side.

  As shown in FIGS. 3, 4 and 7, a toggle bar 26 is connected to the guide rod 17 via a fulcrum pin 26c. The toggle bar 26 can be rotated about the fulcrum pin 26c by a manual operation, and can be moved in a tilt direction, that is, tilted. A link 27 is rotatably connected to the toggle bar 26 via an intermediate fulcrum pin 26a, and the tip of the link 27 is connected to the outer cylinder 50 via an end fulcrum pin 26d. By tilting the toggle bar 26, the guide rod 17, the shaft 51, the piston 18, and the step drill 19 can advance and retreat inside the outer cylinder 50 and the seal block 28, and can pierce the casing portion of the capacitor C.

  The seal block 28 is provided with a nozzle 52.

  The nozzle 52 is connected to piping for performing oil removal, venting, and cleaning operations after drilling.

  Therefore, according to the present embodiment, it is possible to perform a drilling operation on the capacitor C under a substantially complete sealed state, and the liquid inside the capacitor C is not ejected to the outside during the drilling.

  Next, as shown in FIG. 5, on the side of the seal block 28, a closing plug supply device is provided in an arrangement in which the outer cylinder 50 and the axis are perpendicular to each other.

  The stopper plug supply device is provided with a piston plunger 30, a plunger box 31, and a stopper plug storage tool 32, and has a sealed structure. A piston plunger 30 is disposed inside the plunger box 31. By rotating the knob 35, the closing plug 33 is moved to a side substantially coaxial with the step drill 19 by a closing plug receiver 37 provided at the tip of the piston plunger 30. Then, the step drill 19 can be pushed into the hole drilled in the capacitor C by the step drill 19 to close the hole (at this time, the step drill is not rotated).

  The piston plunger 30 is provided with a piston rubber 36 to prevent the closing plug 33 from dropping in addition to the closing plug receiver 37.

  FIG. 8 shows a piping configuration capable of performing operations such as venting in the capacitor C, oil transfer and cleaning liquid circulation after drilling.

  In this configuration, the perforation device 1 is brought into close contact with three locations of the capacitor C, and each of the perforation devices 1 is used as a vent nozzle, a cleaning nozzle, and an oil removal nozzle after being perforated.

  That is, as shown in FIG. 8, the nozzle 52 provided in the seal block 28 of the drilling device 1 shown in FIGS. 4 and 5 is used as a vent nozzle, an oil removal nozzle, or a cleaning nozzle depending on the application. it can.

  The oil extraction nozzle, the cleaning loop pipe 60 connected to the cleaning nozzle, the transfer pipe 63 connected to the cleaning loop pipe 60 via the transfer / cleaning loop switching valve 43, and the vent connected to the vent nozzle A pipe 61, a nitrogen supply pipe 62 connected to the vent nozzle through the vent / nitrogen injection switching valve 42, and the like are arranged. A cleaning pump 64, a transfer pump 65, and the like are provided.

  In the oil removal operation according to this configuration, the oil enclosed in the capacitor C is transferred to the transfer pipe 63 by the transfer pump 65 from the oil discharge nozzle. Thereafter, the cleaning liquid is circulated in the cleaning loop formed by the cleaning loop pipe 60 to clean the inside of the capacitor C, and the cleaned cleaning liquid is transferred to the transfer pipe 63.

  Furthermore, by supplying nitrogen gas to the capacitor C and sealing it with the closing plug 33, it is possible to proceed to operations such as cutting and disassembling the housing of the capacitor C in a safe state.

  In addition, in order to confirm the sealing performance of the drilling device 1, a nitrogen pressure resistance test of 0.3 MPa is performed before the drilling operation.

  Further, at the time of oil removal work, the reversing device 7 is reversed and the capacitor C is turned over so that the oil removal nozzle is on the lower side and the vent nozzle and the cleaning nozzle are on the upper side.

  About the shape of the closing plug 33, as shown to Fig.9 (a)-(f), it can implement as various shapes. FIG. 9 is an explanatory view showing various configuration examples of the closing plug 33.

  As shown in FIG. 9 (a), the cross section has a trapezoidal shape 33a, and as shown in FIG. 9 (b), the cross section has a trapezoidal shape and has a wide bottom portion 33b, as shown in FIG. 9 (c). As shown in FIG. 9 (d), the cross section is trapezoidal with an enlarged inclination angle, and as shown in FIG. 9 (d), the cross section is trapezoidal and has a arrowhead upper stopper on the narrow side. As shown, the cross section has a rectangular parallelepiped shape 33e, and as shown in FIG. 9F, the small diameter side cross section has a large trapezoidal shape 33f.

  In FIG. 10, the comparison result about hardness, a shape, PCB-proof performance, the example of a washing | cleaning-resistant agent, insertion property etc. about chloroprene, urethane, an epoxy, wood (birch tree), etc. is shown as a table | surface.

  From this result, the stopper plug is made of a resin excellent in PCB resistance (eg, epoxy).

  The plug made of epoxy resin does not penetrate into PCB and cleaning agent and has excellent durability. In addition, it has a high hardness, and even when the plug is slightly tilted when plugged, the hole can be plugged properly.

  The neoprene rubber was selected to be an epoxy resin (hardness 60) because the permeability of PCB and cleaning liquid is inferior to that of an epoxy resin, and because it deforms even with the same hardness 60 due to the hardness, it is inferior to plug reliably.

  In this way, with this device, a series of operations from drilling, oil removal, cleaning, and plugging can be performed in a sealed state, so there is little risk of environmental contamination and humans can easily approach the object. I can work.

  Moreover, although the said embodiment demonstrated the oil-removal device structure with respect to a capacitor | condenser, in this invention, it can utilize suitably also as an oil-removal device with respect to a transformer.

The block diagram of the oil-removal apparatus by one Embodiment of this invention. The block diagram of the inversion apparatus by one Embodiment of this invention. 1 is a side view of a drilling device according to an embodiment of the present invention. The top view of the said drilling apparatus. The side view seen from the right side of the said drilling apparatus FIG. Operation | movement explanatory drawing of a slide box. Operation | movement explanatory drawing of a drilling apparatus. The piping block diagram applied in one Embodiment of this invention. The closure plug shape example in one Embodiment of this invention. The stopper plug material selection table 1 in one embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drilling apparatus 2 (2a, 2b) Clamp apparatus 3 Base 5 (5a, 5b) Support base 6 (6a, 6b) Rotating shaft 7 (7a, 7b) Inversion apparatus 13 Variable speed drill 15 Clamp 16 Hexagon stick 17 Guide Rod 18 Piston 19 Step drill 20 Frame 23 Slide box 24 Slide rail 25 Push bolt 26 Toggle lever 26a Intermediate fulcrum pin 26b Grip operation part 26c Support point pin 26d End fulcrum pin 27 Link 28 Seal block 29 Socket packing 30 Piston plunger 31 Plunger box 32 Closure stopper housing 33 Closure stopper 35 Knob 36 Piston rubber 37 Closure stopper receptacle 42 Vent / nitrogen injection switching valve 43 Transfer / washing loop switching valve 50 Outer cylinder 51 Shaft 52 Nozzle 60 Cleaning loop pipe 61 Vent pipe 62 Nitrogen Supply distribution 63 transfer pipe 64 washing pump 65 transfer pump 33 (a to f) closure plug 100 extracting the fuel system 101 working floor 102 frame structure 104 hydraulic piping C (C1, C2) capacitors

Claims (3)

A reversing device for rotatably supporting a casing of a transformer and a capacitor containing PCB in an upright posture and a rollover posture around a horizontal axis;
A clamping device provided in the reversing device and holding a transformer and a capacitor;
A drill provided in the clamp device for perforating a side wall of the housing at a position higher than a liquid level of the PCB; a sealing device for sealingly covering the drill and a perforated portion of the surface of the housing; and the sealing device A hole drilling device comprising a stopper plug supply device that supplies a stopper plug to be loaded into a hole drilled in the housing;
An oil draining device such as a PCB-containing transformer, comprising an oil draining pipe connected to the hole punching device.   2. The PCB-containing transformer according to claim 1, wherein a plurality of the reversing devices are installed adjacent to each other, and when one reversing device is set to an upright posture, the other clamping device is set to a rollover posture. Oil removal device.   The oil removing device for a PCB-containing transformer or the like according to claim 1, wherein the perforating device has leakage resistance with a pressure resistance of 0.3 MPa or more.

Images