JP2008155100A - Extracting-oil drilling needle of polychlorinated biphenyl-containing oil, and oil-extracting method and apparatus of polychlorinated biphenyl-containing oil using this extracting-oil drilling needle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drilling needle for extracting oil from a polychlorinated biphenyl-containing oil, which is in no danger of a blockage of a punched hole part by chips produced in perforating, and accordingly, needs no replacement of the needle portion, and an oil-extracting method and apparatus of the polychlorinated biphenyl-containing oil using the extracting-oil drilling needle. <P>SOLUTION: The extracting-oil drilling needle has a constitution that the end is formed in a sharp-pointed shape enabling a sticking on a wall surface of a casing to penetrate, an extracting-oil passage to extract the polychlorinated biphenyl-containing oil is formed, and at the same time, an inflow opening of the polychlorinated biphenyl-containing oil to the extracting-oil passage is formed, the inflow opening being formed not to open in the end at least when the end sticks the wall surface of the casing to penetrate. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention safely removes polychlorinated biphenyl-containing oil such as insulating oil from capacitors, transformers and other equipment filled with polychlorinated biphenyl-containing oil such as insulating oil containing polychlorinated biphenyl (PCB). The present invention relates to a drilling needle for oil removal, a method for draining polychlorinated biphenyl-containing oil using the drilling needle for oil removal, and an apparatus therefor.

  As is well known, polychlorinated biphenyl is very stable and difficult to be decomposed and has high insulation (electrical resistance), so it has been used for insulating materials such as capacitors and transformers. The use is prohibited for the reason.

  However, there are still cases where traces remain in devices such as capacitors and transformers, such as those that have been used in the past, and how to disassemble and process them is an important issue. It has become.

  When processing equipment contaminated with such polychlorinated biphenyls, the equipment is dismantled and separated, and each equipment is cleaned with cleaning oil. Before performing, it is necessary to drain the insulating oil inside the equipment, and such a work of removing the oil was regarded as one of the treatment work of the equipment contaminated with polychlorinated biphenyl.

  When oil removal is performed, for example, a casing of equipment such as a capacitor is drilled with a drill or the like, and the insulating oil is recovered through the hole. Specifically, after forming the hole, the container is tilted or inverted, or sucked from the hole portion to recover the insulating oil.

However, the oil removal means by drilling with such a drill or the like may cause the insulating oil contaminated with polychlorinated biphenyl to scatter. That is, among the devices as described above, in particular, the capacitor is usually composed of a casing and an element provided in the casing, and the casing is configured by being filled with insulating oil. In the case of a capacitor, in order to obtain appropriate insulation performance in the casing, the insulation oil is filled almost in a full state. Therefore, when the casing filled with the insulating oil in the almost full state is drilled by using the above-mentioned drill or the like, the filled insulating oil overflows from the hole portion, and the casing There was a risk of scattering to the outside or contamination of the outer surface and surroundings of the casing with insulating oil.

Further, when drilling is performed using a cutting means such as a drill, chips are generated from the casing that is cut at the time of drilling, and therefore, the chips may be mixed into the insulating oil that is collected. The recovered insulating oil is discarded or reused through a complicated process later. However, as described above, when chips are mixed in the insulating oil, the chips become impurities in the insulating oil. Thus, there is a problem that appropriate processing cannot be performed in the subsequent process. Moreover, in order to perform an appropriate post process, it is necessary to perform a complicated process of removing chips from the insulating oil.

Therefore, in order to solve such problems, an invention as described in Patent Document 1 below has also been made. The invention according to Patent Document 1 has a tapered portion at the tip, and a hole portion (inlet) communicating with a collection path for collecting insulating oil is provided in the tapered portion. The present invention relates to a piercing needle that can be press-fitted into a container while maintaining an inlet at a negative pressure, and an insulating oil recovery device and method including such a piercing needle.

However, in the invention according to Patent Document 1, the piercing portion provided at the tip of the needle at the time of piercing may be blocked by the chips of the container, and oil removal cannot be performed when the piercing portion is closed. It is necessary to replace the part.

Japanese Patent No. 3247362

  The present invention has been made to solve such a problem, and there is no possibility that the perforated portion is clogged by chips generated at the time of perforation, and therefore there is no need to replace the needle portion. An object of the present invention is to provide a drilling needle for polychlorinated biphenyl oil and an apparatus therefor using the drilling needle for oil removal, the drilling needle for oil removal.

  In order to solve such problems, the present invention has been made as a perforating needle for extracting polychlorinated biphenyl-containing oil, and a method and apparatus for extracting polychlorinated biphenyl-containing oil using the perforating needle for extracting oil. The feature as a perforating needle for oil removal is a perforation needle for oil removal used for extracting and recovering the polychlorinated biphenyl-containing oil from devices filled with polychlorinated biphenyl-containing oil containing polychlorinated biphenyl. The tip portion is formed into a sharp shape that can be pierced and penetrated into the wall surface of the casing, and an oil removal passage 13 for extracting the polychlorinated biphenyl-containing oil is formed, and the oil removal An inlet for the polychlorinated biphenyl-containing oil to the flow path 13 is formed, and the inlet has at least the tip portion on the wall surface of the casing. When to penetrate stab came is that it is configured to not open at the tip portion.

Another feature of the drilling needle for oil removal is that it is used for extracting and collecting the polychlorinated biphenyl-containing oil from the equipment in which the polychlorinated biphenyl-containing oil containing polychlorinated biphenyl is filled in the casing. A needle which is a perforated needle and has an oil extraction passage 13 for extracting the polychlorinated biphenyl-containing oil, and an inlet of the polychlorinated biphenyl-containing oil to the oil removal passage 13 is formed at the tip portion 14. The main body 11 and an elevating body 12 capable of moving up and down in the needle main body 11 and closing the inflow port of the needle main body 11, and the inflow port of the needle main body 11 is closed by the elevating body 12. In this state, the tip formed integrally with both the tip of the needle body 11 and the tip of the elevating body 12 pierces and penetrates the wall surface of the casing. The tip of the needle body 11 is separated from the tip of the lift body 12 when the lifting body 12 is raised so that the inlet of the needle body 11 is opened. It is configured.

In this case, a storage space 18 capable of storing the tip of the lifting body 12 when the lifting body 12 is raised is formed in the needle body 11 so as to communicate with the inflow port and the oil removal passage 13. It is also possible. In addition, the inlet of the polychlorinated biphenyl-containing oil can be formed on the side surface in addition to the tip of the needle body 11.

Furthermore, another feature of the drilling needle for oil removal is that it is used for extracting and recovering the polychlorinated biphenyl-containing oil from equipment in which the polychlorinated biphenyl-containing oil containing polychlorinated biphenyl is filled in the casing. A needle body 11 which is a perforated needle and has an oil extraction passage 13 for extracting the polychlorinated biphenyl-containing oil, and an inlet for the polychlorinated biphenyl-containing oil to the oil removal passage 13 is formed on a side surface. And a lifting / lowering body 12 that can move up and down in the needle body 11, and a storage space 18 that can store the tip 16 of the lifting / lowering body 12 when the lifting / lowering body 12 is raised is provided in the needle body 11. The tip portion formed integrally with both the tip portion of the needle body 11 and the tip portion of the elevating body 12 can pierce and penetrate the wall surface of the casing. The tip of the needle body 11 is separated from the tip of the lifting body 12 when the lifting body 12 is raised, and the tip of the lifting body 12 is formed into the needle body 11. It is comprised so that it may be accommodated in the storage space part 18 of this. An injection port 22 for injecting gas into the casing and an injection path 21 communicating with the injection port 22 can be further formed in the needle body 11. In this case, the injection port 22 is formed on the upper side of the inflow port of the needle body 11.

Furthermore, the characteristic of the polychlorinated biphenyl-containing oil as a deoiling device is that the polychlorinated biphenyl-containing oil is extracted and collected from equipment configured by filling the casing with the polychlorinated biphenyl-containing oil containing polychlorinated biphenyl. An oil removal device for polychlorinated biphenyl-containing oil for use, comprising the perforation needle according to any one of claims 1 to 6, and through an oil removal passage 13 formed in the needle body 11 of the perforation needle. Means are provided for sucking the polychlorinated biphenyl-containing oil from the inlet.

  Furthermore, the characteristic of the method for removing the polychlorinated biphenyl-containing oil is that the polychlorinated biphenyl-containing oil is extracted and collected from equipment configured by filling the casing with the polychlorinated biphenyl-containing oil containing the polychlorinated biphenyl. A method for removing oil containing polychlorinated biphenyl for piercing a piercing needle according to any one of claims 1 to 6 into a wall surface of the casing to penetrate the wall surface of the casing, and thereafter a needle body of the piercing needle Insulating oil is sucked out from the inflow port through the oil removal passage 13 formed in 11 and is removed.

As described above, the perforating needle for oil removal according to the present invention has a sharpened tip that can be pierced and penetrated into the wall surface of the casing to form an oil removal passage for extracting the polychlorinated biphenyl-containing oil. And an inlet for the polychlorinated biphenyl-containing oil to the oil drainage passage is formed, and the inlet is inserted at least when the tip is pierced and penetrated into the wall surface of the casing. Therefore, when the tip portion is pierced and penetrated through the wall surface of the casing, chips on the wall surface of the casing may enter the inlet of the polychlorinated biphenyl-containing oil. Therefore, there is an effect that there is no fear that the inlet is blocked.

As a result, the chips do not inadvertently enter the oil drainage passage from the inlet of the polychlorinated biphenyl-containing oil, and therefore can quickly enter the condensers and other equipment without mixing the chips. The polychlorinated biphenyl-containing oil can be recovered.

  In addition, when the storage space that can store the tip is provided in the needle body, the sharp tip is not stored in the storage space and protrudes outward. There is no possibility that the needle will pierce the inner parts of the casing, and there is no possibility that the casing will be inadvertently perforated on the opposite wall surface facing the perforated wall surface of the casing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a schematic block diagram of a polychlorinated biphenyl-containing oil recovery apparatus according to an embodiment. The polychlorinated biphenyl-containing oil recovery device of the present embodiment is a device used for recovering contained oil containing polychlorinated biphenyl (PCB) filled in the capacitor 9, and this embodiment is used as the contained oil. In the form, insulating oil is used. As shown in FIG. 1, the polychlorinated biphenyl-containing oil recovery device of the present embodiment includes a perforation needle 1 whose tip can be press-fitted into a capacitor 9, and a press for adjusting the press-fitting / drawing of the perforation needle 1. Pressure adjusting unit 2, negative pressure generating unit 3 for maintaining the inlet formed at the tip of the needle body of the perforating needle 1 in a negative pressure state, and insulating oil sucked and collected by the perforating needle 1 And an insulating oil storage tank 4 for storing oil.

  As shown in FIG. 2, the piercing needle 1 includes a needle body 11 and a lifting body 12 provided so as to be movable up and down with respect to the needle body 11. The elevating body 12 is accommodated in the central portion of the needle body 11, and the needle body 11 and the elevating body 12 are supplied to the hydraulic cylinder 8 from a hydraulic pump or the like of the pressing force adjusting unit 2, as will be described later. It is configured to move up and down separately by hydraulic pressure. Further, the needle body 11 is formed with an oil drain passage 13 for draining the insulating oil. The oil removal passage 13 is formed at a position slightly decentered from the central portion of the needle body 11 in which the elevating body 12 is accommodated.

  As shown in FIG. 4, an inlet 15 serving as an inlet portion for insulating oil is formed at the distal end portion 14 of the needle body 11. The distal end portion 16 of the elevating body 12 is formed in a protruding shape having a size that can be inserted into the inlet 15 of the needle body 11 to close the inlet 15. The part of the lifting body 12 other than the distal end portion 16 is constituted by a rod 17 that is thinner than the protruding distal end portion 16.

A storage space 18 serving as a storage portion for the tip 16 when the tip 16 of the elevating body 12 ascends is formed above the inlet 15 of the needle body 11, and the storage space The oil removal passage 13 is provided in an upper portion of 18. The storage space 18 is formed wider than the oil removal flow path 13 and the inlet 15, and the inlet 15, the storage space 18, and the oil discharge flow path 13 are all in communication.

  The distal end portion 16 of the elevating body 12 is formed in a sharp shape having a distal end surface 16 a having a tapered surface, and the front end portion 16 of the elevating body 12 is inserted into the inlet 15. 2, the distal end portion 16 of the needle body 11 and the distal end portion 14 of the needle body 11 are integrated with each other to form a continuous tapered surface. A tip end portion 16 is formed. As described above, in the state where the distal end portion 16 of the elevating body 12 is inserted into the inflow port 15 and the distal end portion 16 of the elevating body 12 and the distal end portion 14 of the needle body 11 are integrated to form a continuous tapered surface. The tip of the integrated piercing needle is formed into a tapered surface that forms an acute angle that can penetrate the wall surface of the casing of a device such as a capacitor when pierced. . The area of the tip of the perforating needle 1 in which the tip 16 of the elevating body 12 and the tip 14 of the needle body 11 are integrally formed is hardened by a hardening process. It is desirable to use tool steel as the material.

  The perforating needle 1 is connected to a piping part 6 communicating with the negative pressure generating part 3 through an insulating oil storage tank 4. That is, the perforating needle 1 is provided so that the oil draining passage 13 of the needle body 11 communicates with the pipe portion 6, whereby the oil draining passage 13 passes through the pipe portion 6 and the insulating oil storage tank 4. Thus, it communicates with the negative pressure generator 3.

The pressing force adjusting unit 2 is configured by using a hydraulic pump or the like. In this embodiment, the pressing force adjusting unit 2 and the hydraulic cylinder 8 that operates the piercing needle 1 are connected to the hydraulic circulation piping unit 5. Connected through. That is, in this embodiment, the vertical movement of the piercing needle 1 and its pressing force and pulling force are adjusted by controlling the hydraulic pressure supplied to the hydraulic cylinder 8 from the hydraulic pump or the like of the pressing force adjusting unit 2. is doing. More specifically, the hydraulic pressure supplied to the hydraulic cylinder 8 from the hydraulic pump or the like of the pressing force adjusting unit 2 so that the needle body 11 and the lifting body 12 constituting the perforating needle 1 are lifted and lowered separately, respectively, Each is controlled independently.

The negative pressure generating unit 3 is constituted by a vacuum pump or the like. In this embodiment, the vacuum pump or the like is connected to the perforating needle 1 via the piping units 6 and 7 and the insulating oil storage tank 4. . That is, in the present embodiment, by driving the vacuum pump or the like of the negative pressure generating unit 3, the oil draining passage 13 of the needle body 11 of the piercing needle 1 connected thereto can be maintained in a negative pressure state. As a result, the storage space 18 and the inflow port 15 communicating with the oil removal passage 13 are also maintained in a negative pressure state. Moreover, since the insulating oil storage tank 4 is provided in the negative pressure generating circuit when the oil draining passage 13 of the needle body 11 is maintained in the negative pressure state as described above, basically, the inside is negative. Maintained under pressure.

Next, a method for recovering the insulating oil using the polychlorinated biphenyl-containing oil recovery apparatus having the above-described configuration will be described. When the insulating oil in the capacitor 9 is recovered using the polychlorinated biphenyl-containing oil recovery apparatus according to the present embodiment, first, the vacuum pump or the like constituting the negative pressure generating unit 3 is driven, and the piping units 6, 7, The inlet 15 of the needle body 11 of the piercing needle 1 is brought into a negative pressure / suction state via the insulating oil storage tank 4 and the recovery path 12 of the piercing needle 1.

Next, the hydraulic pump and the hydraulic cylinder 8 constituting the pressing force adjusting unit 2 are driven to lower the punch needle 1 toward the capacitor 9. And as shown in FIG. 3, the front-end | tip part of the perforation needle 1 is stabbed into the wall surface 19 of the casing of the capacitor | condenser 9, and the wall surface 19 of the casing is penetrated.

In this case, since the distal end portion 16 of the elevating body 12 is inserted into the inlet 15 of the needle body 11 and the inlet 15 is closed, the distal end of the piercing needle 1 is placed on the casing. When penetrating through the wall surface, the chips of the casing do not inadvertently enter the inlet 15 of the needle body 11, and therefore the inlet 15 of the needle body 11 is blocked by such chips. There is no such thing.

In addition, in the state where the distal end portion 16 of the elevating body 12 is inserted into the inflow port 15, the distal end portion 16 of the elevating body 12 and the distal end portion 14 of the needle body 11 are integrated and continuous as described above. The tip of the piercing needle 1 that forms a surface is formed into a tapered surface that forms an acute angle that can penetrate the wall surface 19 of the casing. When the portion is pierced into the wall surface 19 of the casing of the capacitor, the wall surface 19 of the casing can be easily penetrated.

After penetrating the tip of the piercing needle 1 through the wall surface 19 of the casing, the elevating body 12 is raised upward with respect to the needle body 11. When the elevating body 12 is raised in this way, the tip 16 of the elevating body 12 is separated from the inlet 15 as shown in FIG. 4, and the inlet 15 is opened, and the tip 16 of the elevator 12 is As shown in the figure, the needle body 11 is housed in the housing space 18.

Thus, in a state where the distal end portion 16 of the lifting body 12 is stored in the storage space 18 of the needle body 11, the distal end portion 16 of the lifting body 12 formed in a sharp shape is the distal end of the needle body 11. Since it does not protrude below the portion 14, the tip end portion 16 of the elevating body 12 does not pierce the internal parts of the capacitor, and the opposite wall surface facing the wall surface of the casing to be perforated The tip 16 of the elevating body 12 is not inadvertently penetrated.

As described above, after the front end of the piercing needle 1 penetrates the wall surface of the casing and the front end 16 of the elevating body 12 is stored in the storage space 18 of the needle main body 11, the front end 14 of the needle main body 11 is stored. The punch 1 is press-fitted into the capacitor 9 until it comes into contact with the insulating oil in the capacitor 9. Here, “press-fit” is not only the case where a pressing force only in the axial direction is applied to the piercing needle 1 to penetrate the tip of the wall of the capacitor 9, but also the pressing force in the axial direction is applied to the piercing needle 1. It includes the case where the tip is passed through the wall surface of the capacitor 9 by applying a rotational force in the circumferential direction. If the tip portion is press-fitted into the wall surface of the capacitor 9 while applying a rotational force in this way, the tip portion can be effectively penetrated into the wall surface with a relatively small pressing force. The rotation in the circumferential direction is not limited to only one direction, and may be performed while alternately repeating one direction and the other direction. In this way, if the punching needle 1 is press-fitted while alternately changing the rotation direction, the wall surface of the capacitor 9 can be penetrated with a relatively small pressing force.

Then, the opened inlet 15 is immersed under the oil surface of the insulating oil 20 as shown in FIG. In this case, as described above, the vacuum pump or the like of the negative pressure generating unit 3 is driven and the negative pressure is already generated, and the oil discharge passage 13 of the needle body 11 is brought into the negative pressure state via the insulating oil storage tank 4. Therefore, the storage space 18 and the inlet 15 communicating with the oil draining flow path 13 are also in a negative pressure state. As a result, when the inlet 15 is immersed under the oil level of the insulating oil 20 as described above, The insulating oil 20 is sucked from the inlet 15.

Then, the insulating oil 20 sucked from the inflow port 15 is conveyed to the insulating oil storage tank 4 via the piping portion 6 via the storage space portion 18 and the oil removal passage 13.

The tip portion of the piercing needle 1 of the present embodiment is configured such that its length in the axial direction (longitudinal direction) is larger than the thickness of the wall surface of the capacitor 9. The tapered surface is preferably formed at an angle of about 20 ° to 45 ° in order to obtain an appropriate penetrating pressing force, an overflow prevention effect, a tool longevity effect, and the like.

(Embodiment 2)
In the present embodiment, the inflow port through which the insulating oil is introduced is formed not only on the distal end portion 14 of the needle body 11 but also on the side surface side of the needle body 11. That is, in this embodiment, as shown in FIGS. 5 and 6, an inlet 15 a similar to that of the first embodiment is formed at the distal end portion 14 of the needle body 11 and is relatively close to the distal end portion 14. An inflow port 15 b is also formed on the side surface of the needle body 11.

The point that the inlet 15a on the tip 14 side communicates with the storage space 18 is the same as in the first embodiment, but the inlet 15b on the side surface of the needle body 11 is also connected to the storage space 18 in the same manner. It is in a state of communication.

  The configuration of the needle body 11, the configuration of the elevating body 12, the configuration of the storage space 18 and the oil drainage channel 13, etc. other than the point that the inflow port 15 b is formed on the side surface side of the needle body 11 are the same as those of the first embodiment. Since it is the same, the description is abbreviate | omitted.

  Also in this embodiment, as in the first embodiment, the tip 16 of the lift 12 and the tip 14 of the needle body 11 are integrated with the tip 16 of the lift 12 inserted into the inflow port 15. Since the continuous tapered surface is formed, and the tip end portion of the integrated piercing needle 1 is formed into a tapered surface that can penetrate the wall surface 19 of the casing, the piercing needle When the tip of 1 is pierced into the wall surface 19 of the capacitor casing, the wall surface 19 of the casing can be easily penetrated. Further, since the distal end portion 16 of the elevating body 12 is inserted into the inflow port 15a of the needle body 11 and the inflow port 15a is closed as in the first embodiment, the distal end of the perforation needle 1 When the portion is penetrated through the wall surface of the casing, the chips of the casing do not inadvertently enter the inlet 15a of the needle body 11, and therefore the inlet of the needle body 11 is caused by such chips. 15a is not blocked.

On the other hand, in this embodiment, in addition to the inflow port 15a of the needle body 11, an inflow port 15b is formed on the side surface side of the needle body 11, and the inflow port 15b on the side surface side moves up and down as described above. Although it is not blocked by the tip 16 of the body 12, the side surface side of the needle body 11 in which the inlet 15b is formed, when the tip of the piercing needle 1 penetrates the wall surface 19 of the casing,
Since the casing does not directly cut the casing, chips of the cut casing do not inadvertently enter from the side-side inlet 15b.

Also in this embodiment, after penetrating the distal end portion of the piercing needle 1 through the wall surface 19 of the casing, the elevating body 12 is raised upward with respect to the needle body 11 to open the inlet 15a on the distal end side, The distal end portion 16 of the elevating body 12 is stored in the storage space portion 18 of the needle body 11. Accordingly, as in the first embodiment, since the tip 16 of the lifting body 12 does not protrude below the tip 14 of the needle body 11, the tip 16 of the lifting 12 may be stuck in the internal component of the capacitor. In other words, the tip end portion 16 of the elevating body 12 does not inadvertently penetrate the opposite wall surface facing the wall surface of the casing to be perforated.

And the front-end | tip part 14 of the needle | hook main body 11 is immersed under the oil surface of the insulating oil 20, as shown in FIG. In this case, as shown in the figure, not only the inflow port 15a on the distal end portion 14 side of the needle body 11, but also the inflow port 15b on the side surface side is positioned below the oil surface of the insulating oil 20 so that the distal end portion of the needle body 11 is located. 14 is immersed in the insulating oil 20. In this case, since the negative pressure is already generated in the negative pressure generating unit 3 as in the case of the first embodiment, the oil draining passage 13 of the needle body 11 is in the negative pressure state via the insulating oil storage tank 4. The storage space 18 and the inlet 15 communicating with the oil draining channel 13 are also in a negative pressure state, and as a result, both the two inlets 15a and 15b are located below the oil level of the insulating oil 20 as described above. If it does, it will be attracted | sucked from the insulating oil 20 from both inflow ports 15a and 15b.

In this case, since the two inlets 15a and 15b are both in communication with the storage space 18, the insulation flowing into the storage space 18 from the two inlets 15a and 15b. The oil is transferred from the storage space 18 to the insulating oil storage tank 4 through the oil extraction passage 13 and the piping 6.
In this embodiment, when the insulating oil is drained, the needle body 11 is inserted deeply into the capacitor, and the inlet 15a is blocked by the opposite wall surface facing the inner wall of the capacitor or the wall surface of the casing. Even if it exists, since insulating oil can be collect | recovered from the inflow port 15b by the side, the needle | hook main body 11 can be inserted deeply in a capacitor | condenser, and insulating oil in a capacitor | condenser can fully be extracted.

(Embodiment 3)
In the present embodiment, the inflow port through which the insulating oil flows is not formed at the distal end portion 14 of the needle body 11, but is formed only on the side surface side of the needle body 11, and in this respect, the above-described Embodiment 1 and This is different from any of the second embodiment. That is, in this embodiment, as shown in FIGS. 7 and 8, the inflow port 15 b is formed on the side surface side away from the distal end portion 14 of the needle body 11.

  The distal end portion 14 of the needle body 11 is in an opened state, but the opening portion is an opening portion of the storage space portion 18, and the storage space portion 18 is the oil drainage channel as in the first embodiment. 13 is not connected. That is, in this embodiment, since the oil removal passage 13 is in communication with only the side inlet 15b of the needle body 11, the insulating oil is sucked only from the side inlet 15b. Become.

  In this embodiment, as shown in FIGS. 7 and 8, the tip end portion 16 of the lifting body 12 is formed larger than the first embodiment and the second embodiment, and the tip end portion of the perforating needle 1 is Mostly, it is constituted by the tip 16 of the lifting body 12. Therefore, the tip end portion 14 of the needle body 11 has few portions formed on the tapered surface. However, although the portion occupied by the distal end portion 14 of the needle body 11 is small, the distal end portion 14 of the needle body 11 and the distal end portion 16 of the elevating body 12 are integrated so as to form a continuous tapered surface. The point where the tip of the needle 1 is formed is the same as in the first embodiment.

Accordingly, in this embodiment as well, as in the first and second embodiments, the piercing needle in which the distal end portion 16 of the elevating body 12 and the distal end portion 14 of the needle body 11 are integrated to form a continuous tapered surface. 1 is formed in a taper surface having an acute angle that can penetrate the wall surface 19 of the casing. Therefore, when the tip of the piercing needle 1 is pierced into the wall surface 19 of the capacitor casing, the casing The wall surface 19 can be easily penetrated.

In the present embodiment, the inlet 15b is formed only on the side surface of the needle body 11 and is not formed on the distal end portion 14. Therefore, the chips of the casing from the distal end portion 14 side naturally enter the oil removal passage 13. There is no such thing as entering. Therefore, the tip portion 16 of the lifting body 12 of the present embodiment does not block the flow path and prevent inadvertent entry of chips as in the first and second embodiments. The distal end portion of the piercing needle 1 is formed integrally with the distal end portion 14 of the main body 11, and is common to the first and second embodiments in that it can be stored in the storage space portion 18 as will be described later.

Also in this embodiment, after penetrating the distal end portion of the piercing needle 1 through the wall surface 19 of the casing, as shown in FIG. 9, the elevating body 12 is raised upward with respect to the needle body 11, and the distal end portion 16 is moved to the needle. Since the distal end portion 16 of the elevating body 12 does not protrude below the distal end portion 14 of the needle main body 11 as in the first and second embodiments, the elevating body can be accommodated in the accommodating space 18 of the main body 11. 12 does not pierce the internal parts of the capacitor, and the tip 16 of the elevating body 12 does not inadvertently penetrate through the opposite wall surface facing the wall surface of the casing. It is.

Then, the distal end portion 14 of the needle body 11 is immersed in the insulating oil 20 so that the inflow port 15b on the side surface side of the needle body 11 is located below the oil surface of the insulating oil 20 as shown in FIG. In the negative pressure generating unit 3, a negative pressure has already been generated in the same manner as in the first and second embodiments, and the oil discharge passage 13 of the needle body 11 is brought into a negative pressure state via the insulating oil storage tank 4. The storage space 18 and the inlet 15 communicating with the passage 13 are also in a negative pressure state. As a result, the inlet 15b is positioned below the oil surface of the insulating oil 20 as described above, so that the insulating oil 20 is transferred from the inlet 15b. Is sucked and transferred to the insulating oil storage tank 4 through the piping section 6 via the oil removal passage 13 communicating with the inlet 15b.

(Embodiment 4)
In the present embodiment, the inflow port 15 through which the insulating oil flows is formed only at the distal end portion 14 of the needle body 11 as shown in FIG. 12, and is not formed on the side surface side. This point is common to the first embodiment, and is different from the second and third embodiments.

  However, in the present embodiment, the oil drainage passage 13 formed to have the same width is in a state of directly communicating with the inflow port 15, and houses the distal end portion 16 of the elevating body 12 as in the first to third embodiments. The storage space 18 is not formed independently. That is, in this embodiment, the oil removal flow path 13 also has a function as a storage space for storing the elevating body 12.

Since the independent storage space portion is not provided as described above, the entire lifting body 12 is formed to have the same width, and the tip end portion 16 of the lifting body 12 is formed in a protruding shape as in the first to third embodiments. Not. Moreover, in this embodiment, the raising / lowering body 12 is comprised so that it may raise / lower within the oil extraction flow path 13. As shown in FIG. Therefore, since at least the vicinity of the inlet 15 of the oil removal passage 13 is closed by the lifting body 12, the oil removal passage 13 branches a portion that is not closed by the lifting body 12 in the middle, It is necessary to make the part which is not obstruct | occluded to the piping part 6 and the insulating oil storage tank 4 and a communication state.

With the distal end portion 16 of the lifting body 12 inserted into the inflow port 15, the distal end portion 16 of the lifting body 12 and the distal end portion 14 of the needle body 11 form a continuous tapered surface, The tip of the integrated piercing needle 1 is common to the first to third embodiments in that it is formed on a tapered surface that forms an acute angle that can penetrate the wall surface 19 of the casing.

Therefore, also in this embodiment, when the front-end | tip part of the piercing needle 1 is stabbed into the wall surface 19 of the casing of a capacitor | condenser, the wall surface 19 of a casing can be penetrated easily. Further, since the distal end portion 16 of the elevating body 12 is inserted into the inflow port 15 of the needle body 11 and the inflow port 15 is closed, when penetrating the wall surface of the casing at the distal end portion of the piercing needle 1, The chips of the casing do not inadvertently enter the inlet 15 of the needle body 11, and the inlet 15 of the needle body 11 is not blocked by the chips.

Also in this embodiment, after passing through the wall surface 19 of the casing at the distal end portion of the piercing needle 1, as shown in FIG. 12, the elevating body 12 is raised upward with respect to the needle body 11, and the distal end side The inlet 15 is opened, and the tip 16 of the elevating body 12 is housed in the oil removal passage 13 of the needle body 11. Accordingly, the tip 16 of the lifting body 12 does not protrude below the tip 14 of the needle body 11, so that the tip of the lifting 12 does not pierce the internal components of the capacitor and the casing is perforated. There is no possibility of inadvertently penetrating the opposite wall surface facing the wall surface.

Then, the opened inlet 15 is immersed under the oil surface of the insulating oil 20 as shown in FIG. 12, and the elevating body 12 is further lifted to connect the oil removal passage 13 to the piping 6 and the insulating oil reservoir as described above. The tank 4 is connected. Since the negative pressure has already been generated in the negative pressure generating section 3 as in the first to third embodiments, the inlet 15 communicating with the oil draining flow path 13 is also in a negative pressure state, and the insulating oil 20 is sucked from the inlet 15. Will be. Then, the insulating oil 20 sucked from the inflow port 15 is conveyed to the insulating oil storage tank 4 through the oil removal passage 13 and the piping portion 6.
In the present embodiment, the inflow port 15 is formed only in the distal end portion 14 of the needle body 11, but the inflow port may be formed in a side surface close to the distal end portion 14. By forming the inflow port also on the side surface, as in the case of the second embodiment, even if the needle body 11 is inserted deeply into the condenser, the inflow port is not blocked and oil can be efficiently drained.

(Embodiment 5)
In the present embodiment, the inflow port through which the insulating oil flows is not formed at the distal end portion 14 of the needle body 11, but is formed only on the side surface side of the needle body 11, and in this regard, Common. That is, in this embodiment, as shown in FIGS. 13 and 14, the inflow port 15 b is formed at a position relatively close to the distal end portion 14 of the needle body 11.

  The opening portion of the distal end portion 14 of the needle body 11 is an opening portion of the storage space portion 18, the storage space portion 18 is not in a state of communicating with the oil removal flow path 13, The distal end portion 16 is formed to be larger than the first embodiment and the second embodiment, and the distal end portion of the piercing needle 1 is almost constituted by the distal end portion 16 of the elevating body 12, and the distal end portion 14 of the needle body 11. Is similar to the third embodiment in that there are few portions formed on the tapered surface. Further, the point of the tip of the piercing needle 1 is formed so that the tip 14 of the needle body 11 and the tip 16 of the elevating body 12 are integrated to form a continuous tapered surface. is doing.

Accordingly, also in this embodiment, since the tip of the piercing needle 1 is formed to have a tapered surface that can penetrate the wall surface 19 of the casing, the tip of the piercing needle 1 is placed on the casing of the capacitor. When the wall surface 19 is pierced, the casing wall surface 19 can be easily penetrated, and the inflow port is formed only in the side surface portion of the needle body 11 and is not formed in the distal end portion 14. There is no risk of casing chips entering.

  On the other hand, in this embodiment, in addition to the inlet 15b and the oil removal passage 13, as shown in FIGS. 13 and 14, an inlet 21 for injecting nitrogen gas into the casing of the condenser, and an inlet 22 This is different from the third embodiment in that respect.

Also in this embodiment, after penetrating the distal end portion of the piercing needle 1 through the wall surface 19 of the casing, as shown in FIG. 14, the elevating body 12 is raised upward with respect to the needle body 11, and the distal end portion 16 is moved to the needle. Since it can be stored in the storage space 18 of the main body 11 and the distal end portion 16 of the lifting body 12 does not protrude below the distal end portion 14 of the needle body 11, the distal end portion 16 of the lifting body 12 is inside the capacitor. There is no need to pierce the part, and the tip 16 of the elevating body 12 does not inadvertently penetrate the opposite wall surface facing the wall surface of the casing.

  Further, in the present embodiment, as shown in FIG. 14, the inlet 15b on the side surface of the needle body 11 is positioned below the oil surface of the insulating oil 20, and the nitrogen gas inlet 22 is positioned inside the capacitor. The tip 14 of the needle body 11 is immersed in the insulating oil 20. Since the negative pressure has already been generated in the negative pressure generating section 3 as in the first to fourth embodiments, the inlet 15 communicating with the oil draining flow path 13 is also in a negative pressure state, and is sucked from the insulating oil 20 through the inlet 15b. Then, the oil is transferred to the insulating oil storage tank 4 through the piping section 6 via the oil draining flow path 13 communicating with the inflow port 15b.

  On the other hand, in this embodiment, nitrogen gas is supplied to the injection path 21 of the needle body 11, and nitrogen gas is injected into the capacitor casing from the injection port 22 through the injection path 21. By injecting nitrogen gas into the casing in this way, the inside of the casing is pressurized, and as a result, the suction action of the insulating oil 20 from the inlet 15b is more suitably generated.

(Other embodiments)
In each of the above embodiments, the perforation needle 1, the pressing force adjusting unit 2 that adjusts the press-fitting / drawing of the perforation needle 1, and the inflow port formed at the distal end portion of the needle body of the perforation needle 1 have a negative pressure. Although the negative pressure generating part 3 for maintaining the state and the insulating oil storage tank 4 for storing the insulating oil sucked and recovered by the perforating needle 1 are provided, the insulating oil recovery device is configured. The configuration of the insulating oil recovery device is not limited to the first embodiment, and the pressing force adjusting unit 2 and the negative pressure generating unit 3 other than the piercing needle 1 are not essential to the present invention.

Therefore, the means for sucking the insulating oil from the inflow port of the needle body 11 is not limited to the means for sucking the negative oil by generating the negative pressure by the negative pressure generator 3 as in the embodiment. Further, the means for allowing the needle body 11 and the lifting body 12 of the perforating needle 1 to move up and down is not limited to the means using the hydraulic pressure in the pressing force adjusting unit 2 as in this embodiment.
In the above embodiment, since the negative pressure is generated by the negative pressure generator 3 in advance and the wall surface of the casing of the capacitor 9 is pierced by the piercing needle 1, Although the preferable advantage that the insulating oil is easily sucked from the inflow port is obtained, the present invention is not limited to this, and after the perforation with the perforating needle 1, the negative pressure generating unit 3 generates a negative pressure to suck the insulating oil from the inflow port. It is also possible.

Furthermore, the shape of the needle body 11 is not limited to the above embodiments. For example, the shape of the tip of the needle body 11 may be formed in a square cross section in addition to the circular cross section. Similarly, the cross-sectional shapes of the oil removal passage 13 and the inlets 15, 15 a, and 15 b can be square or square. Moreover, the shape of the raising / lowering body 12 is not limited to said each embodiment.

Further, in the third embodiment, the injection path 21 and the injection port 22 for injecting nitrogen gas are provided.
Such an injection path 21 and an injection port 22 can also be formed in the needle body 11 of the embodiments other than the third embodiment.

Furthermore, although the case where the piercing needle 1 is perforated on the upper wall surface of the casing of the capacitor 9 has been described in the above embodiment, the position where the perforating needle 1 perforates is not limited to this embodiment. For example, it is possible to perforate from the side wall surface or the lower wall surface of the casing.

Furthermore, although the case where the oil removal means of the present invention is applied to a capacitor has been described in the above embodiment, the present invention can be applied not only to a capacitor but also to a transformer. In short, any device containing polychlorinated biphenyl-containing oil may be used.

Furthermore, in the said embodiment, although the case where insulating oil was used as a containing oil containing polychlorinated biphenyl (PCB) was demonstrated, it is also possible to apply to transformer oil, mineral oil, etc. besides insulating oil.

The schematic block diagram of the insulating oil draining apparatus as one Embodiment. The principal part expanded sectional view of the perforation needle for oil extraction as one Embodiment. The principal part expanded sectional view immediately after letting the wall surface of the casing penetrate. The principal part expanded sectional view of the state where the front-end | tip part of the same piercing needle was immersed in insulating oil. The principal part expanded sectional view of the perforation needle for oil extraction of other embodiment. The principal part expanded sectional view of the state which penetrated the wall surface of the casing and the tip part of the needle body was immersed in insulating oil. The principal part expanded sectional view of the perforation needle for oil extraction of other embodiment. The principal part expanded sectional view immediately after letting the wall surface of the casing penetrate. The principal part expanded sectional view of the state where the front-end | tip part of the same piercing needle was immersed in insulating oil. The principal part expanded sectional view of the perforation needle for oil extraction of other embodiment. The principal part expanded sectional view immediately after letting the wall surface of the casing penetrate. The principal part expanded sectional view of the state where the front-end | tip part of the same piercing needle was immersed in insulating oil. The principal part expanded sectional view of the perforation needle for oil extraction of other embodiment. The principal part expanded sectional view of the state which penetrated the wall surface of the casing and the tip part of the needle body was immersed in insulating oil.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Perforated needle 11 ... Needle body 12 ... Elevating body 13 ... Oil removal flow path 14 ... Tip part 15, 15a, 15b ... Inlet 16 ... Tip part

Claims (8)

  A perforating needle for oil extraction used for extracting and collecting the polychlorinated biphenyl-containing oil from equipment in which the polychlorinated biphenyl-containing oil containing polychlorinated biphenyl is filled in the casing, the tip of which is the casing Is formed into a sharp shape that can be pierced and penetrated into a wall of the oil, and an oil draining passage (13) for extracting the polychlorinated biphenyl-containing oil is formed, and poly to the oil draining passage (13) is formed. An inlet for chlorinated biphenyl-containing oil is formed, and the inlet is configured not to open at the tip when at least the tip is pierced through the wall of the casing. A perforating needle for extracting oil of polychlorinated biphenyl-containing oil.   A perforating needle for extracting oil used for extracting and recovering the polychlorinated biphenyl-containing oil from equipment in which the polychlorinated biphenyl-containing oil containing polychlorinated biphenyl is filled in a casing, wherein the polychlorinated biphenyl-containing oil is used. A needle body (11) in which an oil drainage passage (13) for extracting oil is formed and an inlet for polychlorinated biphenyl-containing oil to the oil drainage passage (13) is formed at the tip (14); The needle body (11) includes a lift body (12) that can move up and down in the needle body (11) and can close the inlet of the needle body (11), and the needle body (11) by the lift body (12). In the state where the inflow port is closed, the tip portion integrally formed by both the tip portion of the needle body (11) and the tip portion of the elevating body (12) pierces and penetrates the wall surface of the casing. The tip of the needle body (11) is separated from the tip of the lift body (12) when the lift body (12) is lifted to form the needle body. A perforating needle for extracting oil of polychlorinated biphenyl-containing oil, wherein the inlet of (11) is configured to open. The needle body so that the storage space (18) that can store the tip of the lift (12) communicates with the inflow port and the oil removal passage (13) when the lift (12) is raised. (11) The perforation needle for extracting oil of the polychlorinated biphenyl-containing oil according to claim 2 formed in the inside. The perforated needle for removing polychlorinated biphenyl-containing oil according to claim 2 or 3, wherein the inlet of the polychlorinated biphenyl-containing oil is also formed on the side surface side of the needle body (11). A perforating needle for oil extraction used for extracting and collecting the polychlorinated biphenyl-containing oil from equipment in which a polychlorinated biphenyl-containing oil containing polychlorinated biphenyl is filled in a casing, wherein the polychlorinated biphenyl-containing oil is used. A needle body (11) in which an oil drainage passage (13) is formed and a polychlorinated biphenyl-containing oil inlet to the oil drainage passage (13) is formed on a side surface; 11) A lifting space (12) that can move up and down in the interior, and a storage space (18) that can store the tip (16) of the lifting body (12) when the lifting body (12) is raised. Is formed in the needle body (11), and a tip portion formed integrally with both the tip portion of the needle body (11) and the tip portion of the elevating body (12) is formed on the wall surface of the casing. Pierced and penetrated The tip of the needle body (11) and the tip of the lift (12) are separated when the lift (12) is raised, and the lift (12) is separated. A perforated needle for removing polychlorinated biphenyl-containing oil, wherein the tip of (12) is configured to be stored in the storage space (18) of the needle body (11).   An injection port (22) for injecting gas into the casing and an injection path (21) communicating with the injection port (22) are further formed in the needle body (11), and the injection port (22) 6. The perforating needle for removing polychlorinated biphenyl-containing oil according to any one of claims 1 to 5, which is formed on the upper side of the inlet of (11).   A polychlorinated biphenyl-containing oil draining device for extracting and recovering the polychlorinated biphenyl-containing oil from equipment configured by filling a casing with a polychlorinated biphenyl-containing oil containing polychlorinated biphenyl, Item 7. The punched needle for removing the polychlorinated biphenyl-containing oil according to any one of Items 1 to 6 is provided, and from the inlet through an oil removal passage (13) formed in the needle body (11) of the punched needle. An apparatus for removing polychlorinated biphenyl-containing oil, comprising means capable of sucking the polychlorinated biphenyl-containing oil. A method for extracting a polychlorinated biphenyl-containing oil for extracting and recovering the polychlorinated biphenyl-containing oil from equipment constituted by filling a casing with a polychlorinated biphenyl-containing oil containing polychlorinated biphenyl, comprising: The piercing needle according to any one of Items 1 to 6 is pierced into the wall surface of the casing to pass through the wall surface of the casing, and thereafter, through an oil removal passageway (13) formed in the needle body (11) of the piercing needle. A method of extracting polychlorinated biphenyl-containing oil, wherein the insulating oil is sucked out from the inlet and then extracted.

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