JP4213930B2 - Packing peeling device for pole transformer cover - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a packing peeling device for a pole transformer cover.
[0002]
[Prior art]
The pole transformers that are installed are regularly inspected. When the pole transformer is lifted, the dropped pole transformer is inspected at the repair shop, replaced by parts, and refurbished and repaired by the factory. The packing of the pole transformer cover is replaced with a new one when the factory picks up and repairs.
[0003]
By the way, as shown in FIG. 4, the ring-shaped packing 2 is firmly bonded by the adhesive 3 along the bent portion of the back side surface of the pole transformer cover 1 formed in a container shape by bending the peripheral edge portion. Moreover, since the packing 2 is quite large, it is not easy to peel off the pole transformer cover 1 by ordinary mechanical means. Accordingly, the present applicant introduces the pole transformer cover 1 to which the packing 2 is bonded into a space held at a predetermined low temperature by cooling the liquid nitrogen, and cools the pole transformer cover 1 near the predetermined temperature. Then, a method of peeling the packing 2 of the pole transformer cover 1 by spraying liquid nitrogen on the pole transformer cover 1 to cool the pole transformer cover 1 to a lower temperature was proposed (special feature). (See Kaihei 4-239111).
[0004]
[Problems to be solved by the invention]
However, the conventional method of peeling the packing has a problem that the running cost is high because liquid nitrogen is very expensive. In addition, since liquid nitrogen is used, there is a problem that the facilities are large.
[0005]
[0006]
The purpose of the present invention is to provide a packing device for peeling off the pole transformer cover.
[0007]
[Means for Solving the Problems]
According to the first aspect of the present invention, the pole transformer cover made of a magnetic material having a packing bonded by an adhesive is induction-heated, and the adhesive is heated by the heat generated in the pole transformer cover. The packing is peeled off from the transformer cover.
[0008]
[0009]
[0010]
[0011]
[0012]
[0013]
In the invention of claim 1, the packing is adhesively bonded, to pole transformer cover each size of a magnetic material are different, bonded to path Kkin on transformers each cover pillar size is different the plane and pole transformer cover in the vicinity intensively induction heating to heat the heat adhesives occurring pole transformer cover, to cope with a cover size (diameter) is different A heating device including an induction heating coil in which a plurality of induction heating coils having different sizes (diameters) are arranged such that a coil having a large size (diameter) is positioned higher than a coil having a small size (diameter) ; , in which a high frequency power supply for supplying high frequency power to the induction heating coil.
[0014]
In the invention according to claim 1 , for the pole transformer cover having a different size, one peeling is performed by a heating device provided with an induction heating coil for heating the pole transformer cover for each pole transformer cover. This makes it possible to process pole transformer covers with different sizes.
[0015]
In the invention of claim 2, the packing is adhesively bonded, to pole transformer cover each size of a magnetic material are different, bonded to the packing for the different pole transformer cover the size Inductive heating is performed on the pole transformer cover in the vicinity and in the vicinity thereof, and the adhesive is heated by heat generated in the pole transformer cover, and the induction heating coil is configured by one induction heating coil. A plurality of the cover mounting tables having different sizes (diameters) are arranged so that the cover mounting table is arranged on the upper side of the plane on which the induction heating coil is formed, and the covers having different sizes (diameters) can be accommodated. A heating device in which a cover mounting table having a large size (diameter) is positioned higher than a cover mounting table having a small size (diameter), and a high frequency for supplying high frequency power to the induction heating coil It is obtained by a source.
[0016]
In the invention according to claim 2 , by providing the tap at a predetermined position of the induction heating coil, it is possible to process a large number of pole transformer covers having different sizes with one peeling device.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic configuration diagram of a packing stripping device for a pole transformer cover according to a first embodiment of the present invention. FIG. 2 is a top view of the pole transformer cover packing peeling apparatus according to the first embodiment of the present invention. In addition, it is set as the structure which can process for every pole transformer cover also with respect to the pole transformer cover from which size differs with this one peeling apparatus.
[0018]
As shown in FIG. 1, a pole transformer cover 1 in which a packing 2 similar to the conventional one is bonded to the back side surface with an adhesive 3 is placed on a peeling device 5. The pole transformer cover 1 is made of a magnetic material such as iron or stainless steel, the packing 2 is made of synthetic rubber (NBR) or cork synthetic rubber, and the adhesive 3 is made of a solvent-diluted synthetic rubber system. The peeling device 5 includes a heating device 6 and a high frequency power source 7. As shown in FIG. 2, the heating device 6 includes an induction heating coil 6a and a cover mounting table 6b. The peeling device 5 includes a temperature sensor 9 for monitoring the temperature of the pole transformer cover 1 as necessary, and its output is input to a control device (not shown) that controls the high-frequency power source 7.
[0019]
The induction heating coil 6a is formed by winding an insulation-coated copper wire in a planar ring shape, the ring width and diameter being equal to or greater than those of the packing 3, and the pole transformer cover 1 being placed thereon. In this state, the cover is placed on the cover mounting table 6b so as to be disposed close to the cover. In this example, the induction heating coil 6a is composed of three induction heating coils 6a1, 6a2, 6a3 so that it can correspond to, for example, three covers having different sizes, and any one of these induction heating coils has the coil changeover switch 8 set. It is connected to the high frequency power supply 7 via. The coil changeover switch 8 is configured as a peeling device 5 when a plurality of induction heating coils 6a are configured.
[0020]
The cover mounting table 6b is made of a heat resistant insulating material such as FRP, and includes a cover alignment member 6b1 and a base member 6b4. The cover alignment member 6b1 is radially attached to the circular base member 6b4, for example, at 45 ° intervals. When the pole transformer cover 1 is placed, the cover alignment member 6b1 is arranged on the front side surface of the cover. A plurality of protrusions are provided so that alignment can be performed at the bent portion, and the insulating coating is not damaged by contact with the accommodated heating induction coil 6a. The upper end position of the projecting portion is changed step by step so as to correspond to the three covers, the upper end position of the flat portion between the projecting portions corresponds to the three covers, and the heating induction coil 6a is a column. It is changed in stages so as to be disposed close to the upper transformer cover 1.
[0021]
The heating induction coil 6a is placed on the flat portion between the protrusions formed on the cover alignment member 6b1, and the positions of the protrusions are the three induction heating coils 6a1, 6a2, 6a3, respectively. It arrange | positions so that it may each correspond to the packing adhere | attached on the cover.
[0022]
In the peeling device as described above, the pole-top transformer cover 1 with the packing 2 bonded by the adhesive 3 is placed on the cover mounting base in accordance with the size of the pole-top transformer cover 1 with the back side facing upward. 6b, the temperature sensor 9 is attached to the back side of the pole transformer cover 1 in the vicinity of the packing 2, and is switched to the induction heating coil 6a1 corresponding to the predetermined position by the coil changeover switch 8 and then the high frequency. When high-frequency power is supplied from the power source 7, the pole transformer cover 1 in and near the surface where the packing 2 is attached is intensively induction-heated, and the adhesive 3 is caused by the heat generated in the pole transformer cover 1. It begins to soften and the adhesive strength gradually decreases.
[0023]
When the pole transformer cover 1 reaches a predetermined heating temperature, the high frequency power supply 7 is turned off. Since the packing 2 starts to peel from the pole transformer cover 1 at this temperature, the packing 2 can be easily peeled by hand. This heating temperature is set within a range from a temperature at which the adhesive 3 starts to soften to a temperature at which the adhesive 3 does not melt. Thus, the reason for setting the heating temperature to the above temperature is that the adhesive 3 is melted when heated to the above temperature or more, and an operation of wiping the melted adhesive 3 is required.
[0024]
In this way, it is possible to process a large number of pole transformer covers having different sizes with one peeling device.
[0025]
Here, for example, the inner diameter of the cover is 400 mm, the thickness is 2.3 mm, the outer diameter of the packing is 400 mm, the width is 22 mm, the thickness is 6 mm, the outer diameter of the coil is 480 mm, the width is 100 mm, and the thickness is 6 mm. Was 5 KW, the frequency was 60 KHz, the heating temperature was 130 ° C., and the heating time was 30 seconds, the adhesive 2 was on the verge of melting and the packing 2 could be easily peeled off.
[0026]
FIG. 3 is a schematic configuration diagram of a packing stripping device for a pole transformer cover according to the second embodiment of the present invention.
[0027]
The induction heating coil 6a is composed of a single coil wound in a planar ring shape, and is provided at both ends of the induction heating coil at positions that take into account the number and size of pole transformer covers of different sizes. A power supply unit other than the power supply unit is provided, and in a state where the pole transformer cover 1 is mounted, the power supply unit is accommodated in the cover mounting table 6b so as to be disposed close to the cover. In this example, for example, five power supply units are provided so as to correspond to, for example, six covers having different sizes, and any two of these seven power supply units are connected to the high-frequency power source 7 via the power supply unit changeover switch 18. It is like that.
[0028]
The cover mounting table 6b includes a cover alignment member 6b1, a support member 6b2, a coil mounting member 6b3, and a base member 6b4. The cover alignment member 6b1 is provided with a step on the upper side so that it can be aligned with the bent portion on the front side of the pole transformer cover 1, and the step is formed in a step shape corresponding to the above six covers. Both ends are supported by the support member 6b2 attached to the base member 6b4. The coil mounting member 6b3 is attached over the respective support members 6b2, and is attached to the upper side so that the induction heating coil 6a is disposed close to the pole transformer cover 1. The induction heating coil 6a is accommodated in a space formed by the cover alignment member 6b1, the support member 6b2, and the coil mounting member 6b3. The U-shaped components combined by the cover alignment member 6b1, the support member 6b2, and the coil mounting member 6b3 are radially attached to the circular base member, for example, every 45 °. In addition, the induction heating coil 6a is further disposed closer to the pole transformer cover 1 by being disposed obliquely downward as it goes to the center of the heating device.
[0029]
In this way, it is possible to process a large number of pole transformer covers having different sizes with a single peeling device. Moreover, when the pole transformer cover in the surface where the packing is bonded and in the vicinity thereof is not intensively heated by induction, it can be appropriately heated by changing the switching of the power feeding section.
[0030]
In the above embodiment, when the pole transformer cover 1 reaches a predetermined heating temperature, as a means for turning off the high-frequency power source 7, a predetermined energization current and a predetermined energization time are controlled for the high-frequency power source 7. You may make it set to the control apparatus which does not.
[0031]
If it is artificially monitored that the pole transformer cover 1 has almost reached the predetermined heating temperature, a temperature sensor 9 for monitoring the temperature of the pole transformer cover 1 or a predetermined energization current and a predetermined energization time. With this setting, a control device (not shown) for controlling the high-frequency power source 7 is not necessary.
[0032]
When the induction heating coil 6a is switched by the changeover switch 8, a sensor that senses when the pole transformer cover 1 is placed on each predetermined position of the cover mounting table 6b may be provided.
[0033]
【The invention's effect】
As described above, according to the invention described in請Motomeko 1, the adhesive strength is weakened adhesive is softened, so the packing from readily pole transformer cover by hand is ready to be peeled The running cost can be reduced and the equipment can be made small.
In addition, since the pole transformer cover is efficiently heated, the packing peeling work and power consumption can be efficiently performed.
Further, since the adhesive does not melt, it is possible to eliminate the need to prepare for the operation of wiping off the adhesive.
Furthermore, since the heating device provided with the induction heating coil for heating the pole transformer cover is provided for each pole transformer cover with respect to the pole transformer cover having different sizes, the pillars having different sizes with one peeling device. Upper transformer cover can be processed.
[0034]
[0035]
[0036]
[0037]
According to invention of Claim 2 , it can process with respect to many pole transformer covers from which size differs with one peeling apparatus.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a packing stripping device for a pole transformer cover according to a first embodiment of the present invention.
FIG. 2 is a top view of a packing stripping device for a pole transformer cover according to the first embodiment of the present invention.
FIG. 3 is a schematic configuration diagram of a packing stripping device for a pole transformer cover according to a second embodiment of the present invention.
FIG. 4 is a side view showing a pole transformer cover partially cut away.
[Explanation of symbols]
1 Transformer cover on pole 2 Packing 3 Adhesive 5 Peeling device 6 Heating device 6a Induction heating coil 7 High frequency power supply

Claims (2)

Packing is adhesively bonded, to pole transformer cover each size of a magnetic material are different, the sizes are different in plane bonding the pre Symbol packing on to the transformer for each cover pillars and nearby on pillars a transformer cover intensively induction heating, wherein in the heat generated in the pole transformer cover to heat the adhesive, to cope with a cover size (diameter) is different at different size (diameter) A plurality of induction heating coils, a heating device including an induction heating coil in which a coil having a large size (diameter) is positioned higher than a coil having a small size (diameter), and a high-frequency power to the induction heating coil Packing peeling device for pole transformer cover provided with high frequency power supply for supplying power. For each pole transformer cover that is made of a magnetic material and has a different size, with the packing bonded by an adhesive, the pole transformer in and around the surface where the packing is bonded to each pole transformer cover having a different size. The heater cover is intensively induction-heated, the adhesive is heated by the heat generated in the pole transformer cover, and is composed of one induction heating coil, and the cover mounting table is provided with the induction heating coil. A plurality of cover mounting tables having different sizes (diameters) are arranged so as to correspond to covers having different sizes (diameters), which are arranged above the plane to be formed. the size (diameter) of the heating device is located at a position higher than the lower cover mounting table, the pole transformer cover with a high-frequency power source for supplying high frequency power to the induction heating coil Kkin peeling device.

Images