WO2023079736A1 - Oil flow relay - Google Patents

Oil flow relay Download PDF

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Publication number
WO2023079736A1
WO2023079736A1 PCT/JP2021/040980 JP2021040980W WO2023079736A1 WO 2023079736 A1 WO2023079736 A1 WO 2023079736A1 JP 2021040980 W JP2021040980 W JP 2021040980W WO 2023079736 A1 WO2023079736 A1 WO 2023079736A1
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WO
WIPO (PCT)
Prior art keywords
oil
component
magnet
housing
flange
Prior art date
Application number
PCT/JP2021/040980
Other languages
French (fr)
Japanese (ja)
Inventor
崇之 西村
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2021/040980 priority Critical patent/WO2023079736A1/en
Publication of WO2023079736A1 publication Critical patent/WO2023079736A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling

Definitions

  • the present disclosure relates to oil flow relays.
  • insulating oil which is the cooling medium for the coil, is circulated by an oil pump.
  • an oil flow relay for monitoring the flow of insulating oil is installed inside the vehicle transformer.
  • the oil flow relay (oil flow indicator) described in Japanese Utility Model Laid-Open No. 64-16612 mainly includes a first housing portion (oil pipe), a sub-oil component, and a second housing. It includes a part (case) and an aerial part.
  • the first accommodation portion (oil pipe) seals the insulating oil and the parts in the oil.
  • the second housing portion (case) is arranged outside the first housing portion (oil pipe).
  • the oil flow relay (oil flow indicator) includes a lever, a pressure receiving plate and a link as sub-oil parts, and a gear, a pointer operating rod and a pointer as aerial parts.
  • the link, which is an in-oil component, and the gear, which is an in-air component are mechanically connected by an operating rod arranged across the first containing portion (oil pipe) and the second containing portion (case).
  • the present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide an oil flow relay in which the second housing portion and the aerial component can be removed from the first housing portion while the first housing portion is sealed. is to provide
  • the oil flow relay of the present disclosure includes an in-oil component, a first accommodation portion, a second accommodation portion, and an in-air component.
  • the in-oil component includes a first magnet.
  • the first accommodation part accommodates the submerged component.
  • the first containing portion includes a first partition.
  • the second containing portion includes a second partition.
  • the second accommodation portion is arranged outside the first accommodation portion.
  • the air component is accommodated in the second accommodation section.
  • the aerial component includes a second magnet.
  • the part in the air is coupled to the part in the oil by the magnetic force of the first magnet and the second magnet while sandwiching the first partition and the second partition with the part in the oil.
  • the second housing part is attachable to and detachable from the first housing part while the first housing part is sealed.
  • the second accommodation portion is detachable from the first accommodation portion while the first accommodation portion is sealed. Therefore, the second accommodating portion and the aerial component can be removed from the first accommodating portion while the first accommodating portion is sealed.
  • FIG. 1 is a system diagram schematically showing the configuration of a transformer according to an embodiment
  • FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a partial cross-sectional perspective view which shows roughly the structure of the oil flow relay which concerns on embodiment. It is a sectional view showing roughly composition of an oil flow relay concerning an embodiment.
  • FIG. 5 is a cross-sectional view schematically showing a state in which the second housing portion of the oil flow relay according to the embodiment is removed from the first housing portion;
  • FIG. 4 is a cross-sectional view schematically showing a configuration of sub-oil parts in an ON state of a switch of the oil flow relay according to the embodiment;
  • FIG. 4 is a cross-sectional view schematically showing a configuration of sub-oil components in an off state of the switch of the oil flow relay according to the embodiment;
  • FIG. 200 A configuration of a transformer 200 including an oil flow relay 100 according to the present embodiment will be described using FIG.
  • transformer 200 includes insulating oil 1, oil flow relay 100, transformer body 110, tank 120, cooler 130, and pump 140. I'm in. Oil flow relay 100 includes piping 24 .
  • a transformer 200 according to the present embodiment is mounted, for example, on a railway vehicle.
  • the transformer main body 110 converts high-voltage current supplied from overhead lines into low-voltage current.
  • the transformer main body 110 supplies low-voltage current to motors, air conditioners, or the like used in railway vehicles.
  • Transformer main body 110 is housed in tank 120 .
  • the insulating oil 1 cools the transformer main body 110 while the tank 120 is filled. Since the transformer 200 can be mounted on a railroad vehicle, the insulating oil 1 is desirably a non-flammable insulating oil from the viewpoint of safety.
  • the insulating oil 1 is, for example, vegetable oil such as ester oil or silicone oil.
  • the cooler 130 cools the insulating oil 1.
  • the cooler 130 may be, for example, an air-cooled cooler, but is not particularly limited.
  • the pipe 24 connects the tank 120 and the cooler 130 to each other.
  • the pipe 24 includes a first pipe portion 241 for sending the insulating oil 1 from the cooler 130 to the tank 120 and a second pipe portion 242 for sending the insulating oil 1 from the tank 120 to the cooler 130 .
  • the pump 140 is installed in the pipe 24. Pump 140 circulates insulating oil 1 between tank 120 and cooler 130 . In the present embodiment, pump 140 is installed in second pipe section 242 .
  • the temperature of insulating oil 1 rises as insulating oil 1 cools transformer body 110 housed in tank 120 .
  • the insulating oil 1 whose temperature has been raised is cooled by being sent from the tank 120 to the cooler 130 . Cooled insulating oil 1 is sent from cooler 130 to tank 120 to cool transformer main body 110 again.
  • the oil flow relay 100 is installed on the discharge side of the pump 140 in the pipe 24 .
  • the oil flow relay 100 is installed in the second pipe portion 242 of the pipe 24 .
  • Oil flow relay 100 is installed between pump 140 and cooler 130 .
  • the oil flow relay 100 includes a first accommodation portion 2, an in-oil component 3, a second accommodation portion 4, an air component 5, a plurality of fixing portions 61, It includes a plurality of bolts 62 , a first O-ring 71 and a second O-ring 72 .
  • the first housing portion 2 houses the submerged component 3 .
  • the first accommodating portion 2 is configured such that the insulating oil 1 flows inside the first accommodating portion 2 .
  • the insulating oil 1 is sealed in the first containing portion 2 . That is, the oil-tightness of the insulating oil 1 is maintained.
  • the first accommodation portion 2 faces the second accommodation portion 4 .
  • the first housing portion 2 includes a first partition wall 21 , a first cylindrical portion 22 , a first flange 23 , a pipe 24 and a first support portion 25 .
  • the first partition wall 21 faces the second housing portion 4 .
  • the outer shape of the first partition 21 is, for example, circular.
  • the first partition wall 21 is separate from the first tubular portion 22 , the first flange 23 and the pipe 24 .
  • the first partition wall 21 is detachably attached to the first flange 23 .
  • the first partition wall 21 and the first support portion 25 are configured integrally.
  • the first tubular portion 22 is arranged around the first partition wall 21 .
  • the first tubular portion 22 is connected to the first partition wall 21 via a first flange 23 .
  • the first tubular portion 22 is connected to a pipe 24 .
  • the first tubular portion 22 is arranged so as to surround the submerged component 3 .
  • the first flange 23 protrudes outward from the first tubular portion 22 .
  • the first flange 23 protrudes outward from the first tubular portion 22 toward the side opposite to the submerged component 3 with respect to the first tubular portion 22 .
  • the first flange 23 includes a first portion 231 and a second portion 232 .
  • the first part 231 is separate from the second part 232 .
  • the first portion 231 faces the second portion 232 while being in contact with the second portion 232 .
  • a first O-ring 71 is arranged between the first portion 231 and the second portion 232 . This suppresses leakage of the insulating oil 1 from between the first portion 231 and the second portion 232 .
  • the first portion 231 and the second portion 232 are fixed by a plurality of fixing portions 61 .
  • the fixing part 61 is, for example, a bolt.
  • the second portion 232 is arranged to surround the entire circumference of the first partition wall 21 .
  • the second portion 232 faces the second housing portion 4 .
  • the second portion 232 is directly connected to the first tubular portion 22 .
  • An opening OP is provided in the first flange 23 .
  • the opening OP is sealed by the first partition wall 21 .
  • the submerged component 3 can be inserted into the first housing portion 2 through the opening OP.
  • a second O-ring 72 is arranged between the first flange 23 and the first partition wall 21 . This suppresses leakage of the insulating oil 1 from between the first flange 23 and the first partition wall 21 .
  • a passage through which the insulating oil 1 flows is provided in the pipe 24 .
  • the pipe 24 extends to the front side and the back side of the page.
  • the submerged component 3 extends from the first partition wall 21 to the flow path of the pipe 24 .
  • the first support portion 25 extends from the first partition wall 21 into the first housing portion 2 along the thickness direction of the first partition wall 21 .
  • the first support portion 25 supports the submerged component 3 .
  • the first support portion 25 includes a recess into which the submerged component 3 can be inserted.
  • the submerged component 3 is housed in the first housing portion 2 .
  • the submerged part 3 includes a first magnet 31 , a first shaft portion 32 , a first spherical surface portion 33 , a first insertion portion 34 and blade portions 35 .
  • the first magnet 31, the first shaft portion 32, the first spherical surface portion 33, the first insertion portion 34, and the blade portion 35 are integrally formed.
  • the first magnet 31 faces the first partition wall 21 .
  • the first magnet 31 is in contact with the first partition wall 21 .
  • the first magnet 31 surrounds the tip of the first shaft portion 32 and the entire periphery of the first spherical portion 33 .
  • a first insertion portion 34 is fixed to the first magnet 31 .
  • a first shaft portion 32 is fixed to the first magnet 31 via a first insertion portion 34 .
  • the first shaft portion 32 faces the first partition wall 21 via the first spherical portion 33 .
  • a first spherical portion 33 is connected to the tip of the first shaft portion 32 .
  • the submerged component 3 is in contact with the first housing portion 2 at the first spherical portion 33 .
  • the first shaft portion 32 is inserted into the first insertion portion 34 .
  • the first shaft portion 32 is fixed to the first insertion portion 34 .
  • the first shaft portion 32 and the first spherical portion 33 are supported by the first support portion 25 over the entire circumference. Therefore, the first shaft portion 32 and the first spherical portion 33 rotate but do not translate.
  • the first spherical portion 33 is magnetized by the first magnet 31 .
  • the first spherical portion 33 is configured by, for example, a steel ball.
  • the first spherical portion 33 includes, for example, a smooth hemispherical portion.
  • the blade portion 35 protrudes from the first shaft portion 32 .
  • the blade portion 35 protrudes outward from the first shaft portion 32 along the radial direction of the first shaft portion 32 .
  • the blade portion 35 is arranged inside the pipe 24 .
  • the second housing portion 4 is arranged outside the first housing portion 2 .
  • the second housing portion 4 faces the first partition wall 21 and the first flange 23 .
  • the second housing portion 4 is arranged on the opposite side of the submerged component 3 with respect to the first partition wall 21 .
  • the second housing portion 4 includes a second partition wall 41 , a second cylindrical portion 42 , a second flange 43 , a transmission portion 44 and a second support portion 45 .
  • the second partition wall 41, the second tubular portion 42, the second flange 43, the transmission portion 44 and the second support portion 45 are integrally formed.
  • the second partition 41 faces the first accommodating portion 2 .
  • the outer shape of the second partition 41 is, for example, circular.
  • the second tubular portion 42 is arranged around the second partition wall 41 .
  • the second tubular portion 42 is arranged so as to surround the second partition 41 and the aerial component 5 .
  • the second tubular portion 42 extends from the outer periphery of the second partition wall 41 toward the side opposite to the first housing portion 2 .
  • the second flange 43 protrudes outward from the second tubular portion 42 .
  • the second flange 43 protrudes outward from the second tubular portion 42 toward the side opposite to the aerial component 5 with respect to the second tubular portion 42 .
  • the second flange 43 faces the first flange 23 .
  • the second flange 43 is detachable from the first flange 23 with a plurality of bolts 62 .
  • a plurality of bolts 62 fix the first flange 23 to the second flange 43 outside the second housing portion 4 .
  • the outer diameter of the second flange 43 is smaller than the outer diameter of the first flange 23 . Therefore, the first flange 23 has a portion exposed from the second flange 43 .
  • a plurality of fixing portions 61 are arranged on the portion of the first flange 23 exposed from the second flange 43 .
  • the transmission part 44 is connected to the second tubular part 42 on the side opposite to the second partition wall 41 with respect to the second tubular part 42 .
  • the transmissive portion 44 has a transparent portion that transmits light. Thereby, the user of the oil flow relay 100 can confirm the state of the later-described pointer 57 of the air component 5 through the transparent portion 44 .
  • the second support portion 45 protrudes from the second partition wall 41 into the second housing portion 4 along the thickness direction of the second partition wall 41 .
  • the second housing portion 4 supports the aerial component 5 .
  • the second support portion 45 includes a recess into which the aerial component 5 can be inserted.
  • the aerial component 5 is housed in the second housing portion 4 .
  • the part in air 5 is separable from the part in oil 3 .
  • the aerial component 5 includes a second magnet 51 , a second shaft portion 52 , a second spherical portion 53 , a second insertion portion 54 , a cam 55 , a switch 56 and a pointer 57 .
  • the second magnet 51, the second shaft portion 52, the second spherical portion 53, the second insertion portion 54, the cam 55 and the pointer 57 are integrally formed.
  • the switch 56 is configured separately from the second magnet 51 , the second shaft portion 52 , the second spherical surface portion 53 , the second insertion portion 54 , the cam 55 and the pointer 57 .
  • the second magnet 51 faces the second partition wall 41 .
  • the second magnet 51 faces the first magnet 31 via the first partition 21 and the second partition 41 .
  • the second magnet 51 is coupled with the first magnet 31 by magnetic force.
  • the in-air component 5 and the in-oil component 3 are coupled to the in-oil component 3 by the magnetic forces of the first magnet 31 and the second magnet 51 with the first partition 21 and the second partition 41 sandwiched therebetween.
  • the second magnet 51 is in contact with the second partition 41 .
  • the second magnet 51 surrounds the tip of the second shaft portion 52 and the entire circumference of the second spherical surface portion 53 .
  • a second insertion portion 54 is fixed to the second magnet 51 .
  • a second shaft portion 52 is fixed to the second magnet 51 via a second insertion portion 54 .
  • the second shaft portion 52 faces the second partition wall 41 via the second spherical portion 53 .
  • the second shaft portion 52 faces the first shaft portion 32 via the first spherical portion 33 , the first partition wall 21 and the second partition wall 41 .
  • the second shaft portion 52 is arranged in line with the first shaft portion 32 .
  • the second shaft portion 52 is separable from the first shaft portion 32 .
  • the second shaft portion 52 and the second spherical portion 53 are inserted into the second support portion 45 . Therefore, the second shaft portion 52 and the second spherical surface portion 53 rotate but do not translate.
  • the aerial component 5 is in contact with the second housing portion 4 at the second spherical portion 53 .
  • the second spherical portion 53 is magnetized by the second magnet 51 .
  • the second spherical portion 53 is composed of, for example, a steel ball.
  • the second spherical portion 53 includes a hemispherical portion.
  • the second shaft portion 52 is inserted into the second insertion portion 54 .
  • the second shaft portion 52 is fixed to the second insertion portion 54 .
  • the cam 55 is fixed to the second shaft portion 52 between the second spherical portion 53 and the pointer 57 . As will be described later, the cam 55 is configured to switch the switch 56 between an ON state and an OFF state by rotating the second shaft portion 52 .
  • Switch 56 is, for example, a microswitch.
  • a pointer 57 is connected to the rear end of the second shaft portion 52 . The pointer 57 extends from the second shaft portion 52 so as to cross the axial direction of the second shaft portion 52 . The pointer 57 is configured to rotate as the second shaft portion 52 rotates.
  • the second housing portion 4 can be attached to and detached from the first housing portion 2 while the first housing portion 2 is sealed. Specifically, the second housing portion 4 is detachable from the first housing portion 2 with bolts 62 . In this embodiment, the second housing portion 4 can be attached to and detached from the first housing portion 2 by the bolts 62, but the structure for attaching and detaching the second housing portion 4 and the first housing portion 2 is as follows. is not limited to The second housing portion 4 can be attached to and detached from the first housing portion 2 with the opening OP of the first flange 23 sealed by the first partition wall 21 . The second accommodation portion 4 is attachable to and detachable from the first accommodation portion 2 with the insulating oil 1 sealed in the first accommodation portion 2 .
  • the second housing portion 4 can be attached to and detached from the first housing portion 2 while maintaining oil tightness.
  • the second housing portion 4 is attachable to and detachable from the first housing portion 2 in a state in which the aerial component 5 is arranged inside the second housing portion 4 .
  • the second housing portion 4 can be attached to and detached from the first housing portion 2 together with the aerial component 5 .
  • the cam 55 includes a flat portion 551.
  • a second contact 564 is in contact with the flat portion 551 .
  • a second contact 564 is pressed against the flat portion 551 by a connecting portion 563 .
  • the switch 56 is configured to be switchable between an on state and an off state.
  • the switch 56 includes a switch body 561 , a first contact 562 , a connecting portion 563 and a second contact 564 .
  • a first contact 562 and a connecting portion 563 are arranged on the switch body 561 .
  • the connecting portion 563 is configured to be rotatable with respect to the switch body 561 .
  • the connecting portion 563 connects the second contact 564 to the switch body 561 . When the first contact 562 and the second contact 564 are in contact, the switch 56 is energized. When the first contact 562 and the second contact 564 are separated, the switch 56 is not energized.
  • FIG. 1 the operation of the oil flow relay 100 according to this embodiment will be described using FIGS. 2, 3, 5 and 6.
  • FIG. 2 is a diagrammatic representation of the oil flow relay 100 according to this embodiment.
  • the dashed line in FIG. 2 indicates the outer shape of the vane portion 35 when the insulating oil 1 is flowing.
  • the dashed lines in FIG. 3 indicate the outlines of the vanes 35 and the cam 55 when the insulating oil 1 is flowing.
  • the vanes 35 are rotated by the flow of the insulating oil 1 .
  • the blade part 35 rotates, for example, 90° from a state in which it faces vertically downward.
  • the air component 5 is coupled to the oil component 3 by the magnetic forces of the first magnet 31 and the second magnet 51, the rotation of the vane portion 35 is controlled by the first shaft portion 32 and the second It is transmitted to the second magnet 51 via the first magnet 31 . That is, the part 3 in oil and the part 5 in air cooperate to rotate.
  • the aerial component 5 also rotates.
  • the user of the oil flow relay 100 can confirm the rotation of the vanes 35 by confirming the rotation of the pointer 57 . That is, the user of the oil flow relay 100 can confirm the flow of the insulating oil 1 by confirming the rotation of the pointer 57 .
  • the second housing portion 4 is arranged in a state in which the first housing portion 2 is sealed. Detachable. Therefore, the second housing portion 4 and the aerial component 5 can be removed from the first housing portion 2 while the first housing portion 2 is sealed. Therefore, the second containing portion 4 and the aerial component 5 can be removed from the first containing portion 2 while the insulating oil 1 is sealed in the first containing portion 2 . That is, the second housing portion 4 and the aerial component 5 can be collectively removed from the first housing portion 2 while maintaining oil tightness. Therefore, maintenance work can be performed to replace the aerial parts 5 while maintaining the oil tightness, so that the maintenance work can be made more efficient. In addition, since it is not necessary to replace parts (in-oil parts 3) that do not require maintenance during maintenance work, maintenance work is made more efficient.
  • the first flange 23 protrudes outward from the first tubular portion 22
  • the second flange 43 protrudes outward from the second tubular portion 42 . Therefore, by attaching and detaching the second flange 43 to and from the first flange 23, the second accommodation portion 4 can be moved to the first accommodation portion 2 while maintaining the sealed state of the first accommodation portion 2. Can be put on and taken off.
  • the second flange 43 is detachable from the first flange 23 with a plurality of bolts 62. Therefore, the second housing portion 4 can be easily attached to and detached from the first housing portion 2 with the plurality of bolts 62 .
  • the submerged component 3 is in contact with the first accommodating portion 2 at the first spherical portion 33
  • the in-air component 5 is in contact with the second accommodating portion 4 at the second spherical portion 53 .
  • Friction between the part 3 in the oil and the first housing portion 2 and friction between the part 5 in the air and the second housing portion 4 can be reduced. Therefore, the air component 5 and the oil component 3 can be smoothly rotated. Therefore, the rotation of the blade portion 35 caused by the flow of the insulating oil 1 can be accurately measured.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

An oil flow relay (100) comprises: an in-oil component (3); a first accommodation part (2); a second accommodation part (4); and an in-air component (5). The in-oil component (3) includes a first magnet (31). The first accommodation part (2) accommodates therein the in-oil component (3). The first accommodation part (2) includes a first partition wall (21). The second accommodation part (4) includes a second partition wall (41). The second accommodation part (4) is disposed outside the first accommodation part (2). The in-air component (5) is accommodated in the second accommodation part (4). The in-air component (5) includes a second magnet (51). The in-air component (5) is coupled to the in-oil component (3) by means of magnetic forces of the first magnet (31) and the second magnet (51) in a state of holding the first partition wall (21) and the second partition wall (41) in between the oil-in component (3) and the in-air component. The second accommodation part (4) can be attached to and detached from the first accommodation part (2) in a state where the first accommodation part (2) is sealed.

Description

油流継電器oil flow relay
　本開示は、油流継電器に関するものである。 The present disclosure relates to oil flow relays.
　車両用変圧器の内部では、コイルの冷却媒体である絶縁油が油ポンプによって循環されている。油ポンプの故障等によって絶縁油の流れが停止した場合には、車両用変圧器の内部の温度が上昇することがある。このため、車両用変圧器の内部には、絶縁油の流れを監視するための油流継電器が設置されている。 Inside the vehicle transformer, insulating oil, which is the cooling medium for the coil, is circulated by an oil pump. When the flow of insulating oil is stopped due to failure of the oil pump or the like, the temperature inside the vehicle transformer may rise. For this reason, an oil flow relay for monitoring the flow of insulating oil is installed inside the vehicle transformer.
　例えば、実開昭６４－１６６１２号公報（特許文献１）に記載の油流継電器（油流指示器）は、主に、第１収容部（油配管）と、油中部品と、第２収容部（ケース）と、気中部品とを含んでいる。第１収容部（油配管）は、絶縁油および油中部品を封止している。第２収容部（ケース）は、第１収容部（油配管）の外に配置されている。上記の油流継電器（油流指示器）は、油中部品としててこ棒、受圧板およびリンクを含んでおり、気中部品として歯車、指針操作棒および指針を含んでいる。油中部品であるリンクと気中部品である歯車とは、第１収容部（油配管）および第２収容部（ケース）にまたがって配置された操作棒によって機械的に接続されている。 For example, the oil flow relay (oil flow indicator) described in Japanese Utility Model Laid-Open No. 64-16612 (Patent Document 1) mainly includes a first housing portion (oil pipe), a sub-oil component, and a second housing. It includes a part (case) and an aerial part. The first accommodation portion (oil pipe) seals the insulating oil and the parts in the oil. The second housing portion (case) is arranged outside the first housing portion (oil pipe). The oil flow relay (oil flow indicator) includes a lever, a pressure receiving plate and a link as sub-oil parts, and a gear, a pointer operating rod and a pointer as aerial parts. The link, which is an in-oil component, and the gear, which is an in-air component, are mechanically connected by an operating rod arranged across the first containing portion (oil pipe) and the second containing portion (case).
実開昭６４－１６６１２号公報Japanese Utility Model Laid-Open No. 64-16612
　油流継電器の機器更新の際には、気中部品のみが交換される。このため、気中部品の交換の際には、気中部品および気中部品を収容している第２収容部のみが第１収容部から取り外される。しかしながら、上記公報に記載の油流継電器（油流指示器）では、気中部品が油中部品に操作棒によって機械的に接続されている。よって、気中部品を取り外す際に、第１収容部の封止を解除し、絶縁油を第１収容部（油配管）から抜いてから、油中部品ごと気中部品を第１収容部（油配管）から取り外す必要がある。 　Only the air parts are replaced when the equipment of the oil flow relay is updated. For this reason, when replacing the aerial component, only the aerial component and the second accommodating portion accommodating the aerial component are removed from the first accommodating portion. However, in the oil flow relay (oil flow indicator) described in the above publication, the part in the air is mechanically connected to the part in the oil by the operating rod. Therefore, when removing the part in the air, the sealing of the first housing part is released, the insulating oil is removed from the first housing part (oil pipe), and then the part in the air is removed together with the part in the oil in the first housing part ( must be removed from the oil pipe).
　本開示は上記課題に鑑みてなされたものであり、その目的は、第１収容部が封止された状態で第２収容部および気中部品を第１収容部から取り外すことができる油流継電器を提供することである。 The present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide an oil flow relay in which the second housing portion and the aerial component can be removed from the first housing portion while the first housing portion is sealed. is to provide
　本開示の油流継電器は、油中部品と、第１収容部と、第２収容部と、気中部品を備えている。油中部品は、第１磁石を含んでいる。第１収容部は油中部品を収容している。第１収容部は、第１隔壁を含んでいる。第２収容部は、第２隔壁を含んでいる。第２収容部は、第１収容部の外部に配置されている。気中部品は、第２収容部に収容されている。気中部品は、第２磁石を含んでいる。気中部品は、油中部品とで第１隔壁および第２隔壁を挟んだ状態で第１磁石および第２磁石の磁力によって油中部品に結合されている。第２収容部は、第１収容部が封止された状態で、第１収容部に対して着脱可能である。 The oil flow relay of the present disclosure includes an in-oil component, a first accommodation portion, a second accommodation portion, and an in-air component. The in-oil component includes a first magnet. The first accommodation part accommodates the submerged component. The first containing portion includes a first partition. The second containing portion includes a second partition. The second accommodation portion is arranged outside the first accommodation portion. The air component is accommodated in the second accommodation section. The aerial component includes a second magnet. The part in the air is coupled to the part in the oil by the magnetic force of the first magnet and the second magnet while sandwiching the first partition and the second partition with the part in the oil. The second housing part is attachable to and detachable from the first housing part while the first housing part is sealed.
　本開示の油流継電器によれば、第２収容部は、第１収容部が封止された状態で、第１収容部に対して着脱可能である。このため、第１収容部が封止された状態で第２収容部および気中部品を第１収容部から取り外すことができる。 According to the oil flow relay of the present disclosure, the second accommodation portion is detachable from the first accommodation portion while the first accommodation portion is sealed. Therefore, the second accommodating portion and the aerial component can be removed from the first accommodating portion while the first accommodating portion is sealed.
実施の形態に係る変圧器の構成を概略的に示す系統図である。1 is a system diagram schematically showing the configuration of a transformer according to an embodiment; FIG. 実施の形態に係る油流継電器の構成を概略的に示す部分断面斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a partial cross-sectional perspective view which shows roughly the structure of the oil flow relay which concerns on embodiment. 実施の形態に係る油流継電器の構成を概略的に示す断面図である。It is a sectional view showing roughly composition of an oil flow relay concerning an embodiment. 実施の形態に係る油流継電器の第２収容部が第１収容部から取り外された状態を概略的に示す断面図である。FIG. 5 is a cross-sectional view schematically showing a state in which the second housing portion of the oil flow relay according to the embodiment is removed from the first housing portion; 実施の形態に係る油流継電器のスイッチのオン状態における油中部品の構成を概略的に示す断面図である。FIG. 4 is a cross-sectional view schematically showing a configuration of sub-oil parts in an ON state of a switch of the oil flow relay according to the embodiment; 実施の形態に係る油流継電器のスイッチのオフ状態における油中部品の構成を概略的に示す断面図である。FIG. 4 is a cross-sectional view schematically showing a configuration of sub-oil components in an off state of the switch of the oil flow relay according to the embodiment;
　以下、実施の形態について図に基づいて説明する。なお、以下では、同一または相当する部分に同一の符号を付すものとし、重複する説明は繰り返さない。 Embodiments will be described below based on the drawings. In addition, below, the same code|symbol shall be attached|subjected to the same or corresponding part, and the overlapping description is not repeated.
　図１を用いて、本実施の形態に係る油流継電器１００を含む変圧器２００の構成を説明する。 A configuration of a transformer 200 including an oil flow relay 100 according to the present embodiment will be described using FIG.
　図１に示されるように、本実施の形態に係る変圧器２００は、絶縁油１と、油流継電器１００と、変圧器本体１１０と、タンク１２０と、冷却器１３０と、ポンプ１４０とを含んでいる。油流継電器１００は、配管２４を含んでいる。 As shown in FIG. 1, transformer 200 according to the present embodiment includes insulating oil 1, oil flow relay 100, transformer body 110, tank 120, cooler 130, and pump 140. I'm in. Oil flow relay 100 includes piping 24 .
　本実施の形態に係る変圧器２００は、例えば、鉄道車両に搭載される。変圧器２００が鉄道車両に搭載される場合、変圧器本体１１０は、架線から供給された高圧電流を低圧電流に変換する。変圧器本体１１０は、低圧電流を鉄道車両に用いられるモーターまたは空調設備等に供給する。変圧器本体１１０は、タンク１２０に収容されている。 A transformer 200 according to the present embodiment is mounted, for example, on a railway vehicle. When the transformer 200 is mounted on a railway vehicle, the transformer main body 110 converts high-voltage current supplied from overhead lines into low-voltage current. The transformer main body 110 supplies low-voltage current to motors, air conditioners, or the like used in railway vehicles. Transformer main body 110 is housed in tank 120 .
　絶縁油１は、タンク１２０に充填された状態で変圧器本体１１０を冷却している。変圧器２００が鉄道車両に搭載され得るため、絶縁油１は、安全性の観点から燃えにくい絶縁油であることが望ましい。絶縁油１は、例えば、植物性油であるエステル油、シリコーン油等である。 The insulating oil 1 cools the transformer main body 110 while the tank 120 is filled. Since the transformer 200 can be mounted on a railroad vehicle, the insulating oil 1 is desirably a non-flammable insulating oil from the viewpoint of safety. The insulating oil 1 is, for example, vegetable oil such as ester oil or silicone oil.
　冷却器１３０は、絶縁油１を冷却している。冷却器１３０としては、例えば、空冷式の冷却器等が挙げられるが、特に限定されない。 The cooler 130 cools the insulating oil 1. The cooler 130 may be, for example, an air-cooled cooler, but is not particularly limited.
　配管２４は、タンク１２０と冷却器１３０とを互いに接続している。配管２４は、冷却器１３０からタンク１２０へ絶縁油１を送るための第１配管部２４１と、タンク１２０から冷却器１３０へ絶縁油１を送るための第２配管部２４２とを含んでいる。 The pipe 24 connects the tank 120 and the cooler 130 to each other. The pipe 24 includes a first pipe portion 241 for sending the insulating oil 1 from the cooler 130 to the tank 120 and a second pipe portion 242 for sending the insulating oil 1 from the tank 120 to the cooler 130 .
　ポンプ１４０は、配管２４に設置されている。ポンプ１４０は、タンク１２０と冷却器１３０との間において絶縁油１を循環させている。本実施の形態において、ポンプ１４０は、第２配管部２４２に設置されている。 The pump 140 is installed in the pipe 24. Pump 140 circulates insulating oil 1 between tank 120 and cooler 130 . In the present embodiment, pump 140 is installed in second pipe section 242 .
　絶縁油１の温度は、タンク１２０に収容された変圧器本体１１０を絶縁油１が冷却することによって上昇する。昇温された絶縁油１は、タンク１２０から冷却器１３０に送られることで冷却される。冷却された絶縁油１は、冷却器１３０からタンク１２０に送られることで変圧器本体１１０を再び冷却する。 The temperature of insulating oil 1 rises as insulating oil 1 cools transformer body 110 housed in tank 120 . The insulating oil 1 whose temperature has been raised is cooled by being sent from the tank 120 to the cooler 130 . Cooled insulating oil 1 is sent from cooler 130 to tank 120 to cool transformer main body 110 again.
　油流継電器１００は、配管２４におけるポンプ１４０の吐き出し部側に設置されている。本実施の形態において、油流継電器１００は、配管２４のうち第２配管部２４２に設置されている。油流継電器１００は、ポンプ１４０と冷却器１３０との間に設置されている。 The oil flow relay 100 is installed on the discharge side of the pump 140 in the pipe 24 . In this embodiment, the oil flow relay 100 is installed in the second pipe portion 242 of the pipe 24 . Oil flow relay 100 is installed between pump 140 and cooler 130 .
　次に、図２～図６を用いて、本実施の形態に係る油流継電器１００の構成を説明する。
　図２および図３に示されるように、油流継電器１００は、第１収容部２と、油中部品３と、第２収容部４と、気中部品５と、複数の固定部６１と、複数のボルト６２と、第１Ｏリング７１と、第２Ｏリング７２とを含んでいる。 Next, the configuration of the oil flow relay 100 according to this embodiment will be described with reference to FIGS. 2 to 6. FIG.
As shown in FIGS. 2 and 3, the oil flow relay 100 includes a first accommodation portion 2, an in-oil component 3, a second accommodation portion 4, an air component 5, a plurality of fixing portions 61, It includes a plurality of bolts 62 , a first O-ring 71 and a second O-ring 72 .
　図３に示されるように、第１収容部２は油中部品３を収容している。第１収容部２は、第１収容部２の内部に絶縁油１が流れるように構成されている。絶縁油１は、第１収容部２に封止されている。すなわち、絶縁油１の油密が保たれている。第１収容部２は、第２収容部４と向かい合っている。 As shown in FIG. 3, the first housing portion 2 houses the submerged component 3 . The first accommodating portion 2 is configured such that the insulating oil 1 flows inside the first accommodating portion 2 . The insulating oil 1 is sealed in the first containing portion 2 . That is, the oil-tightness of the insulating oil 1 is maintained. The first accommodation portion 2 faces the second accommodation portion 4 .
　第１収容部２は、第１隔壁２１と、第１筒状部２２と、第１フランジ２３と、配管２４と、第１支持部２５とを含んでいる。第１隔壁２１は、第２収容部４と向かい合っている。第１隔壁２１の外形は、例えば、円形である。第１隔壁２１は、第１筒状部２２、第１フランジ２３および配管２４とは別体である。第１隔壁２１は、第１フランジ２３に対して着脱可能に構成されている。第１隔壁２１と第１支持部２５は、一体的に構成されている。 The first housing portion 2 includes a first partition wall 21 , a first cylindrical portion 22 , a first flange 23 , a pipe 24 and a first support portion 25 . The first partition wall 21 faces the second housing portion 4 . The outer shape of the first partition 21 is, for example, circular. The first partition wall 21 is separate from the first tubular portion 22 , the first flange 23 and the pipe 24 . The first partition wall 21 is detachably attached to the first flange 23 . The first partition wall 21 and the first support portion 25 are configured integrally.
　第１筒状部２２は、第１隔壁２１の周囲に配置されている。第１筒状部２２は、第１フランジ２３を介して第１隔壁２１に接続されている。第１筒状部２２は、配管２４に接続されている。第１筒状部２２は、油中部品３を囲むように配置されている。 The first tubular portion 22 is arranged around the first partition wall 21 . The first tubular portion 22 is connected to the first partition wall 21 via a first flange 23 . The first tubular portion 22 is connected to a pipe 24 . The first tubular portion 22 is arranged so as to surround the submerged component 3 .
　第１フランジ２３は、第１筒状部２２から外に張り出している。第１フランジ２３は、第１筒状部２２に対して油中部品３とは反対側に向かって第１筒状部２２から外に張り出している。第１フランジ２３は、第１部２３１と、第２部２３２とを含んでいる。第１部２３１は、第２部２３２とは別体である。第１部２３１は、第２部２３２と接触した状態で第２部２３２と向かい合っている。第１部２３１と第２部２３２との間には、第１Ｏリング７１が配置されている。これにより、第１部２３１と第２部２３２との間から絶縁油１が漏れることは抑制されている。第１部２３１と第２部２３２とは、複数の固定部６１によって固定されている。固定部６１は、例えば、ボルトである。第２部２３２は、第１隔壁２１の全周を囲むように配置されている。第２部２３２は、第２収容部４と向かい合っている。第２部２３２は、第１筒状部２２に直接接続されている。 The first flange 23 protrudes outward from the first tubular portion 22 . The first flange 23 protrudes outward from the first tubular portion 22 toward the side opposite to the submerged component 3 with respect to the first tubular portion 22 . The first flange 23 includes a first portion 231 and a second portion 232 . The first part 231 is separate from the second part 232 . The first portion 231 faces the second portion 232 while being in contact with the second portion 232 . A first O-ring 71 is arranged between the first portion 231 and the second portion 232 . This suppresses leakage of the insulating oil 1 from between the first portion 231 and the second portion 232 . The first portion 231 and the second portion 232 are fixed by a plurality of fixing portions 61 . The fixing part 61 is, for example, a bolt. The second portion 232 is arranged to surround the entire circumference of the first partition wall 21 . The second portion 232 faces the second housing portion 4 . The second portion 232 is directly connected to the first tubular portion 22 .
　第１フランジ２３には、開口ＯＰが設けられている。開口ＯＰは、第１隔壁２１によって封止されている。開口ＯＰを介して油中部品３が第１収容部２の内部に挿入され得る。第１フランジ２３と第１隔壁２１との間には、第２Ｏリング７２が配置されている。これにより、第１フランジ２３と第１隔壁２１との間から絶縁油１が漏れることは抑制されている。 An opening OP is provided in the first flange 23 . The opening OP is sealed by the first partition wall 21 . The submerged component 3 can be inserted into the first housing portion 2 through the opening OP. A second O-ring 72 is arranged between the first flange 23 and the first partition wall 21 . This suppresses leakage of the insulating oil 1 from between the first flange 23 and the first partition wall 21 .
　配管２４には、絶縁油１が流動する流路が設けられている。図３では、配管２４は、紙面手前側および紙面奥側に伸びている。油中部品３は、第１隔壁２１から配管２４の流路内まで伸びている。 A passage through which the insulating oil 1 flows is provided in the pipe 24 . In FIG. 3, the pipe 24 extends to the front side and the back side of the page. The submerged component 3 extends from the first partition wall 21 to the flow path of the pipe 24 .
　第１支持部２５は、第１隔壁２１から第１隔壁２１の厚み方向に沿って第１収容部２の内部に張り出している。第１支持部２５は、油中部品３を支持している。第１支持部２５は、油中部品３を挿入可能な凹部を含んでいる。 The first support portion 25 extends from the first partition wall 21 into the first housing portion 2 along the thickness direction of the first partition wall 21 . The first support portion 25 supports the submerged component 3 . The first support portion 25 includes a recess into which the submerged component 3 can be inserted.
　油中部品３は、第１収容部２に収容されている。油中部品３は、第１磁石３１と、第１軸部３２と、第１球面部３３と、第１挿入部３４と、羽根部３５とを含んでいる。第１磁石３１、第１軸部３２、第１球面部３３、第１挿入部３４および羽根部３５は、一体的に構成されている。 The submerged component 3 is housed in the first housing portion 2 . The submerged part 3 includes a first magnet 31 , a first shaft portion 32 , a first spherical surface portion 33 , a first insertion portion 34 and blade portions 35 . The first magnet 31, the first shaft portion 32, the first spherical surface portion 33, the first insertion portion 34, and the blade portion 35 are integrally formed.
　第１磁石３１は、第１隔壁２１と向かい合っている。第１磁石３１は、第１隔壁２１と接触している。第１磁石３１は、第１軸部３２の先端および第１球面部３３の全周を囲っている。第１磁石３１には、第１挿入部３４が固定されている。第１磁石３１には、第１挿入部３４を介して第１軸部３２が固定されている。 The first magnet 31 faces the first partition wall 21 . The first magnet 31 is in contact with the first partition wall 21 . The first magnet 31 surrounds the tip of the first shaft portion 32 and the entire periphery of the first spherical portion 33 . A first insertion portion 34 is fixed to the first magnet 31 . A first shaft portion 32 is fixed to the first magnet 31 via a first insertion portion 34 .
　第１軸部３２は、第１球面部３３を介して第１隔壁２１と向かい合っている。第１軸部３２の先端には、第１球面部３３が接続されている。油中部品３は、第１球面部３３において第１収容部２に接している。第１軸部３２は、第１挿入部３４に挿入されている。第１軸部３２は、第１挿入部３４に固定されている。第１軸部３２および第１球面部３３は、全周にわたって第１支持部２５に支持されている。このため、第１軸部３２および第１球面部３３は、回転運動をするが、並進運動をしない。第１球面部３３は、第１磁石３１によって磁化されている。第１球面部３３は、例えば、鋼球によって構成されている。第１球面部３３は、例えば、滑らかな半球部分を含んでいる。 The first shaft portion 32 faces the first partition wall 21 via the first spherical portion 33 . A first spherical portion 33 is connected to the tip of the first shaft portion 32 . The submerged component 3 is in contact with the first housing portion 2 at the first spherical portion 33 . The first shaft portion 32 is inserted into the first insertion portion 34 . The first shaft portion 32 is fixed to the first insertion portion 34 . The first shaft portion 32 and the first spherical portion 33 are supported by the first support portion 25 over the entire circumference. Therefore, the first shaft portion 32 and the first spherical portion 33 rotate but do not translate. The first spherical portion 33 is magnetized by the first magnet 31 . The first spherical portion 33 is configured by, for example, a steel ball. The first spherical portion 33 includes, for example, a smooth hemispherical portion.
　羽根部３５は、第１軸部３２から張り出している。羽根部３５は、第１軸部３２の径方向に沿って第１軸部３２から外に張り出している。羽根部３５は、配管２４内に配置されている。 The blade portion 35 protrudes from the first shaft portion 32 . The blade portion 35 protrudes outward from the first shaft portion 32 along the radial direction of the first shaft portion 32 . The blade portion 35 is arranged inside the pipe 24 .
　第２収容部４は、第１収容部２の外部に配置されている。第２収容部４は、第１隔壁２１および第１フランジ２３と向かい合っている。第２収容部４は、第１隔壁２１に対して油中部品３とは反対側に配置されている。 The second housing portion 4 is arranged outside the first housing portion 2 . The second housing portion 4 faces the first partition wall 21 and the first flange 23 . The second housing portion 4 is arranged on the opposite side of the submerged component 3 with respect to the first partition wall 21 .
　第２収容部４は、第２隔壁４１と、第２筒状部４２と、第２フランジ４３と、透過部４４と、第２支持部４５とを含んでいる。第２隔壁４１、第２筒状部４２、第２フランジ４３、透過部４４および第２支持部４５は、一体的に構成されている。第２隔壁４１は、第１収容部２と向かい合っている。第２隔壁４１の外形は、例えば、円形である。 The second housing portion 4 includes a second partition wall 41 , a second cylindrical portion 42 , a second flange 43 , a transmission portion 44 and a second support portion 45 . The second partition wall 41, the second tubular portion 42, the second flange 43, the transmission portion 44 and the second support portion 45 are integrally formed. The second partition 41 faces the first accommodating portion 2 . The outer shape of the second partition 41 is, for example, circular.
　第２筒状部４２は、第２隔壁４１の周囲に配置されている。第２筒状部４２は、第２隔壁４１および気中部品５を囲むように配置されている。第２筒状部４２は、第２隔壁４１の外周から第１収容部２とは反対側に向かって伸びている。 The second tubular portion 42 is arranged around the second partition wall 41 . The second tubular portion 42 is arranged so as to surround the second partition 41 and the aerial component 5 . The second tubular portion 42 extends from the outer periphery of the second partition wall 41 toward the side opposite to the first housing portion 2 .
　第２フランジ４３は、第２筒状部４２から外に張り出している。第２フランジ４３は、第２筒状部４２に対して気中部品５とは反対側に向かって第２筒状部４２から外に張り出している。第２フランジ４３は、第１フランジ２３に向かい合っている。第２フランジ４３は、複数のボルト６２によって第１フランジ２３に対して着脱可能である。複数のボルト６２は、第２収容部４の外部において第１フランジ２３を第２フランジ４３に固定している。第２フランジ４３の外径は、第１フランジ２３の外径よりも小さい。このため、第１フランジ２３は、第２フランジ４３から露出した部分を有している。第１フランジ２３の第２フランジ４３から露出した部分には、複数の固定部６１が配置されている。 The second flange 43 protrudes outward from the second tubular portion 42 . The second flange 43 protrudes outward from the second tubular portion 42 toward the side opposite to the aerial component 5 with respect to the second tubular portion 42 . The second flange 43 faces the first flange 23 . The second flange 43 is detachable from the first flange 23 with a plurality of bolts 62 . A plurality of bolts 62 fix the first flange 23 to the second flange 43 outside the second housing portion 4 . The outer diameter of the second flange 43 is smaller than the outer diameter of the first flange 23 . Therefore, the first flange 23 has a portion exposed from the second flange 43 . A plurality of fixing portions 61 are arranged on the portion of the first flange 23 exposed from the second flange 43 .
　透過部４４は、第２筒状部４２に対して第２隔壁４１とは反対側において第２筒状部４２に接続されている。透過部４４は、光を透過させる透明な部分を有している。これにより、油流継電器１００の使用者は、気中部品５の後述の指針５７の状態を透過部４４を介して確認することができる。 The transmission part 44 is connected to the second tubular part 42 on the side opposite to the second partition wall 41 with respect to the second tubular part 42 . The transmissive portion 44 has a transparent portion that transmits light. Thereby, the user of the oil flow relay 100 can confirm the state of the later-described pointer 57 of the air component 5 through the transparent portion 44 .
　第２支持部４５は、第２隔壁４１から第２隔壁４１の厚み方向に沿って第２収容部４の内部に張り出している。第２収容部４は、気中部品５を支持している。第２支持部４５は、気中部品５を挿入可能な凹部を含んでいる。 The second support portion 45 protrudes from the second partition wall 41 into the second housing portion 4 along the thickness direction of the second partition wall 41 . The second housing portion 4 supports the aerial component 5 . The second support portion 45 includes a recess into which the aerial component 5 can be inserted.
　気中部品５は、第２収容部４に収容されている。気中部品５は、油中部品３に対して分離可能である。気中部品５は、第２磁石５１と、第２軸部５２と、第２球面部５３と、第２挿入部５４と、カム５５と、スイッチ５６と、指針５７とを含んでいる。第２磁石５１、第２軸部５２、第２球面部５３、第２挿入部５４、カム５５および指針５７は、一体的に構成されている。スイッチ５６は、第２磁石５１、第２軸部５２、第２球面部５３、第２挿入部５４、カム５５および指針５７とは別体として構成されている。 The aerial component 5 is housed in the second housing portion 4 . The part in air 5 is separable from the part in oil 3 . The aerial component 5 includes a second magnet 51 , a second shaft portion 52 , a second spherical portion 53 , a second insertion portion 54 , a cam 55 , a switch 56 and a pointer 57 . The second magnet 51, the second shaft portion 52, the second spherical portion 53, the second insertion portion 54, the cam 55 and the pointer 57 are integrally formed. The switch 56 is configured separately from the second magnet 51 , the second shaft portion 52 , the second spherical surface portion 53 , the second insertion portion 54 , the cam 55 and the pointer 57 .
　第２磁石５１は、第２隔壁４１と向かい合っている。第２磁石５１は、第１隔壁２１および第２隔壁４１を介して第１磁石３１と向かい合っている。第２磁石５１は、第１磁石３１と磁力によって結合されている。気中部品５は、油中部品３とで第１隔壁２１および第２隔壁４１を挟んだ状態で第１磁石３１および第２磁石５１の磁力によって油中部品３に結合されている。第２磁石５１は、第２隔壁４１と接触している。第２磁石５１は、第２軸部５２の先端および第２球面部５３の全周を囲っている。第２磁石５１には、第２挿入部５４が固定されている。第２磁石５１には、第２挿入部５４を介して第２軸部５２が固定されている。 The second magnet 51 faces the second partition wall 41 . The second magnet 51 faces the first magnet 31 via the first partition 21 and the second partition 41 . The second magnet 51 is coupled with the first magnet 31 by magnetic force. The in-air component 5 and the in-oil component 3 are coupled to the in-oil component 3 by the magnetic forces of the first magnet 31 and the second magnet 51 with the first partition 21 and the second partition 41 sandwiched therebetween. The second magnet 51 is in contact with the second partition 41 . The second magnet 51 surrounds the tip of the second shaft portion 52 and the entire circumference of the second spherical surface portion 53 . A second insertion portion 54 is fixed to the second magnet 51 . A second shaft portion 52 is fixed to the second magnet 51 via a second insertion portion 54 .
　第２軸部５２は、第２球面部５３を介して第２隔壁４１と向かい合っている。第２軸部５２は、第１球面部３３、第１隔壁２１および第２隔壁４１を介して第１軸部３２と向かい合っている。第２軸部５２は、第１軸部３２と一直線上に配置されている。第２軸部５２は、第１軸部３２に対して分離可能である。第２軸部５２および第２球面部５３は、第２支持部４５に挿入されている。このため、第２軸部５２および第２球面部５３は、回転運動をするが、並進運動をしない。気中部品５は、第２球面部５３において第２収容部４に接している。第２球面部５３は、第２磁石５１によって磁化されている。第２球面部５３は、例えば、鋼球によって構成されている。第２球面部５３は、半球部分を含んでいる。第２軸部５２は、第２挿入部５４に挿入されている。第２軸部５２は、第２挿入部５４に固定されている。 The second shaft portion 52 faces the second partition wall 41 via the second spherical portion 53 . The second shaft portion 52 faces the first shaft portion 32 via the first spherical portion 33 , the first partition wall 21 and the second partition wall 41 . The second shaft portion 52 is arranged in line with the first shaft portion 32 . The second shaft portion 52 is separable from the first shaft portion 32 . The second shaft portion 52 and the second spherical portion 53 are inserted into the second support portion 45 . Therefore, the second shaft portion 52 and the second spherical surface portion 53 rotate but do not translate. The aerial component 5 is in contact with the second housing portion 4 at the second spherical portion 53 . The second spherical portion 53 is magnetized by the second magnet 51 . The second spherical portion 53 is composed of, for example, a steel ball. The second spherical portion 53 includes a hemispherical portion. The second shaft portion 52 is inserted into the second insertion portion 54 . The second shaft portion 52 is fixed to the second insertion portion 54 .
　カム５５は、第２球面部５３と指針５７との間において第２軸部５２に固定されている。後述のように、カム５５は、第２軸部５２の回転によってスイッチ５６のオン状態とオフ状態とを切り換えるように構成されている。スイッチ５６は、例えば、マイクロスイッチである。指針５７は、第２軸部５２の後端に接続されている。指針５７は、第２軸部５２の軸方向に対して交差するように第２軸部５２から伸びている。指針５７は、第２軸部５２の回転によって回転するように構成されている。 The cam 55 is fixed to the second shaft portion 52 between the second spherical portion 53 and the pointer 57 . As will be described later, the cam 55 is configured to switch the switch 56 between an ON state and an OFF state by rotating the second shaft portion 52 . Switch 56 is, for example, a microswitch. A pointer 57 is connected to the rear end of the second shaft portion 52 . The pointer 57 extends from the second shaft portion 52 so as to cross the axial direction of the second shaft portion 52 . The pointer 57 is configured to rotate as the second shaft portion 52 rotates.
　図３および図４に示されるように、第２収容部４は、第１収容部２が封止された状態で、第１収容部２に対して着脱可能である。具体的には、第２収容部４は、ボルト６２によって第１収容部２に対して着脱可能である。本実施の形態においては、第２収容部４はボルト６２によって第１収容部２に対して着脱可能であるが、第２収容部４と第１収容部２とを着脱するための構造はこれに限られない。第２収容部４は、第１フランジ２３の開口ＯＰが第１隔壁２１によって封止された状態で、第１収容部２に対して着脱可能である。第２収容部４は、第１収容部２に絶縁油１が封止された状態で、第１収容部２に対して着脱可能である。すなわち、第２収容部４は、油密を保ったままで第１収容部２に対して着脱可能である。第２収容部４は、第２収容部４の内部に気中部品５が配置された状態で、第１収容部２に対して着脱可能である。言い換えると、第２収容部４は、第１収容部２に対して気中部品５と一緒に着脱可能である。 As shown in FIGS. 3 and 4, the second housing portion 4 can be attached to and detached from the first housing portion 2 while the first housing portion 2 is sealed. Specifically, the second housing portion 4 is detachable from the first housing portion 2 with bolts 62 . In this embodiment, the second housing portion 4 can be attached to and detached from the first housing portion 2 by the bolts 62, but the structure for attaching and detaching the second housing portion 4 and the first housing portion 2 is as follows. is not limited to The second housing portion 4 can be attached to and detached from the first housing portion 2 with the opening OP of the first flange 23 sealed by the first partition wall 21 . The second accommodation portion 4 is attachable to and detachable from the first accommodation portion 2 with the insulating oil 1 sealed in the first accommodation portion 2 . That is, the second housing portion 4 can be attached to and detached from the first housing portion 2 while maintaining oil tightness. The second housing portion 4 is attachable to and detachable from the first housing portion 2 in a state in which the aerial component 5 is arranged inside the second housing portion 4 . In other words, the second housing portion 4 can be attached to and detached from the first housing portion 2 together with the aerial component 5 .
　図５に示されるように、カム５５は、平面部５５１を含んでいる。平面部５５１には、第２接点５６４が接している。平面部５５１には、接続部５６３によって第２接点５６４が押し付けられている。 As shown in FIG. 5, the cam 55 includes a flat portion 551. A second contact 564 is in contact with the flat portion 551 . A second contact 564 is pressed against the flat portion 551 by a connecting portion 563 .
　図５および図６に示されるように、スイッチ５６は、オン状態とオフ状態とを切換可能に構成されている。スイッチ５６は、スイッチ本体５６１と、第１接点５６２と、接続部５６３と、第２接点５６４とを含んでいる。スイッチ本体５６１には、第１接点５６２および接続部５６３が配置されている。接続部５６３は、スイッチ本体５６１に対して回動可能に構成されている。接続部５６３は、第２接点５６４をスイッチ本体５６１に接続している。第１接点５６２と第２接点５６４とが接触した場合には、スイッチ５６が通電する。第１接点５６２と第２接点５６４とが離れた場合には、スイッチ５６は通電しない。 As shown in FIGS. 5 and 6, the switch 56 is configured to be switchable between an on state and an off state. The switch 56 includes a switch body 561 , a first contact 562 , a connecting portion 563 and a second contact 564 . A first contact 562 and a connecting portion 563 are arranged on the switch body 561 . The connecting portion 563 is configured to be rotatable with respect to the switch body 561 . The connecting portion 563 connects the second contact 564 to the switch body 561 . When the first contact 562 and the second contact 564 are in contact, the switch 56 is energized. When the first contact 562 and the second contact 564 are separated, the switch 56 is not energized.
　次に、図２、図３、図５および図６を用いて、本実施の形態に係る油流継電器１００の動作を説明する。 Next, the operation of the oil flow relay 100 according to this embodiment will be described using FIGS. 2, 3, 5 and 6. FIG.
　図２の破線は、絶縁油１が流れた状態における羽根部３５の外形を示している。図３の破線は、絶縁油１が流れた状態における羽根部３５およびカム５５の外形を示している。図２に示されるように、羽根部３５は、絶縁油１の流れによって回転する。羽根部３５は、例えば、鉛直下向きを向いた状態から９０°回転する。図３に示されるように、気中部品５が第１磁石３１および第２磁石５１の磁力によって油中部品３に結合されているため、羽根部３５の回転は、第１軸部３２および第１磁石３１を介して第２磁石５１に伝わる。すなわち、油中部品３および気中部品５は、協同して回転する。これにより、絶縁油１が流れることで羽根部３５が回転した場合には、気中部品５も回転する。 The dashed line in FIG. 2 indicates the outer shape of the vane portion 35 when the insulating oil 1 is flowing. The dashed lines in FIG. 3 indicate the outlines of the vanes 35 and the cam 55 when the insulating oil 1 is flowing. As shown in FIG. 2 , the vanes 35 are rotated by the flow of the insulating oil 1 . The blade part 35 rotates, for example, 90° from a state in which it faces vertically downward. As shown in FIG. 3, since the air component 5 is coupled to the oil component 3 by the magnetic forces of the first magnet 31 and the second magnet 51, the rotation of the vane portion 35 is controlled by the first shaft portion 32 and the second It is transmitted to the second magnet 51 via the first magnet 31 . That is, the part 3 in oil and the part 5 in air cooperate to rotate. As a result, when the blade portion 35 rotates due to the flow of the insulating oil 1, the aerial component 5 also rotates.
　絶縁油１が流れることで羽根部３５が回転した場合には、指針５７も回転する。このため、油流継電器１００の使用者は、指針５７の回転を確認することで、羽根部３５の回転を確認することができる。すなわち、油流継電器１００の使用者は、指針５７の回転を確認することで、絶縁油１の流れを確認することができる。 When the blade portion 35 rotates due to the insulating oil 1 flowing, the pointer 57 also rotates. Therefore, the user of the oil flow relay 100 can confirm the rotation of the vanes 35 by confirming the rotation of the pointer 57 . That is, the user of the oil flow relay 100 can confirm the flow of the insulating oil 1 by confirming the rotation of the pointer 57 .
　絶縁油１が流れることで羽根部３５が回転した場合には、カム５５も回転する。これにより、図５および図６に示されるように、平面部５５１は、第２接点５６４と第１接点５６２の接触状態を変化させる。このため、絶縁油１が流れることで羽根部３５（図３参照）が回転した場合には、スイッチ５６の通電状態が切り替わる。 When the vane portion 35 rotates due to the flow of the insulating oil 1, the cam 55 also rotates. Thereby, as shown in FIGS. 5 and 6, the flat portion 551 changes the contact state between the second contact 564 and the first contact 562 . Therefore, when the blade portion 35 (see FIG. 3) rotates due to the flow of the insulating oil 1, the energized state of the switch 56 is switched.
　続いて、本実施の形態の作用効果を説明する。
　本実施の形態に係る油流継電器１００によれば、図３に示されるように、第２収容部４は、第１収容部２が封止された状態で、第１収容部２に対して着脱可能である。このため、第１収容部２が封止された状態で第２収容部４および気中部品５を第１収容部２から取り外すことができる。よって、第１収容部２に絶縁油１が封止された状態で第２収容部４および気中部品５を第１収容部２から取り外すことができる。すなわち、油密を保った状態で第２収容部４および気中部品５を一括して第１収容部２から取り外すことができる。したがって、油密を保った状態で気中部品５を交換する保守作業を行うことができるため、保守作業が効率化される。また、保守作業の際に保守の不要な部品（油中部品３）を交換しなくてもよいため、保守作業が効率化される。 Next, the effects of this embodiment will be described.
According to the oil flow relay 100 according to the present embodiment, as shown in FIG. 3, the second housing portion 4 is arranged in a state in which the first housing portion 2 is sealed. Detachable. Therefore, the second housing portion 4 and the aerial component 5 can be removed from the first housing portion 2 while the first housing portion 2 is sealed. Therefore, the second containing portion 4 and the aerial component 5 can be removed from the first containing portion 2 while the insulating oil 1 is sealed in the first containing portion 2 . That is, the second housing portion 4 and the aerial component 5 can be collectively removed from the first housing portion 2 while maintaining oil tightness. Therefore, maintenance work can be performed to replace the aerial parts 5 while maintaining the oil tightness, so that the maintenance work can be made more efficient. In addition, since it is not necessary to replace parts (in-oil parts 3) that do not require maintenance during maintenance work, maintenance work is made more efficient.
　図３に示されるように、第１フランジ２３は、第１筒状部２２から外に張り出しており、第２フランジ４３は、第２筒状部４２から外に張り出している。このため、第２フランジ４３を第１フランジ２３に対して着脱することで、第１収容部２が封止された状態を維持したままで第２収容部４を第１収容部２に対して着脱することができる。 As shown in FIG. 3 , the first flange 23 protrudes outward from the first tubular portion 22 , and the second flange 43 protrudes outward from the second tubular portion 42 . Therefore, by attaching and detaching the second flange 43 to and from the first flange 23, the second accommodation portion 4 can be moved to the first accommodation portion 2 while maintaining the sealed state of the first accommodation portion 2. Can be put on and taken off.
　図３に示されるように、第２フランジ４３は、複数のボルト６２によって第１フランジ２３に対して着脱可能である。このため、第２収容部４を複数のボルト６２によって容易に第１収容部２に対して着脱することができる。 As shown in FIG. 3, the second flange 43 is detachable from the first flange 23 with a plurality of bolts 62. Therefore, the second housing portion 4 can be easily attached to and detached from the first housing portion 2 with the plurality of bolts 62 .
　図３に示されるように、油中部品３は、第１球面部３３において第１収容部２に接しており、気中部品５は、第２球面部５３において第２収容部４に接している。このため、油中部品３が第１球面部３３以外において第１収容部２に接しておりかつ気中部品５が第２球面部５３以外において第２収容部４に接している場合よりも、油中部品３と第１収容部２との摩擦および気中部品５と第２収容部４との摩擦を低減することができる。よって、気中部品５および油中部品３を滑らかに回転させることができる。したがって、絶縁油１の流れによる羽根部３５の回転を精度良く計測することができる。 As shown in FIG. 3 , the submerged component 3 is in contact with the first accommodating portion 2 at the first spherical portion 33 , and the in-air component 5 is in contact with the second accommodating portion 4 at the second spherical portion 53 . there is Therefore, compared to the case where the submerged component 3 is in contact with the first housing portion 2 except for the first spherical surface portion 33 and the submerged component 5 is in contact with the second housing portion 4 except for the second spherical surface portion 53, Friction between the part 3 in the oil and the first housing portion 2 and friction between the part 5 in the air and the second housing portion 4 can be reduced. Therefore, the air component 5 and the oil component 3 can be smoothly rotated. Therefore, the rotation of the blade portion 35 caused by the flow of the insulating oil 1 can be accurately measured.
　今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。本開示の範囲は上記した説明ではなくて請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 The embodiments disclosed this time should be considered illustrative in all respects and not restrictive. The scope of the present disclosure is indicated by the scope of claims rather than the above description, and is intended to include all changes within the meaning and scope of equivalence to the scope of claims.
　２　第１収容部、３　油中部品、４　第２収容部、５　気中部品、２１　第１隔壁、２２　第１筒状部、２３　第１フランジ、３１　第１磁石、３２　第１軸部、３３　第１球面部、４１　第２隔壁、４２　第２筒状部、４３　第２フランジ、５１　第２磁石、５２　第２軸部、５３　第２球面部、６２　ボルト、１００　油流継電器。 2 first storage part, 3 parts in oil, 4 second storage part, 5 parts in air, 21 first partition wall, 22 first cylindrical part, 23 first flange, 31 first magnet, 32 first shaft part, 33 first spherical portion, 41 second partition wall, 42 second cylindrical portion, 43 second flange, 51 second magnet, 52 second shaft portion, 53 second spherical portion, 62 bolt, 100 oil flow relay.

Claims (3)

  1. 　第１磁石を含む油中部品と、
    　前記油中部品を収容し、かつ第１隔壁を含む第１収容部と、
    　第２隔壁を含み、かつ前記第１収容部の外部に配置された第２収容部と、
    　前記第２収容部に配置され、かつ第２磁石を含む気中部品とを備え、
    　前記気中部品は、前記油中部品とで前記第１隔壁および前記第２隔壁を挟んだ状態で前記第１磁石および前記第２磁石の磁力によって前記油中部品に結合されており、
    　前記第２収容部は、前記第１収容部が封止された状態で、前記第１収容部に対して着脱可能である、油流継電器。     an in-oil component including a first magnet;
    a first accommodation portion that accommodates the submerged component and that includes a first partition;
    a second containing portion including a second partition and disposed outside the first containing portion;
    an aerial component disposed in the second housing and including a second magnet;
    The part in the air is coupled to the part in the oil by the magnetic forces of the first magnet and the second magnet in a state in which the first partition and the second partition are sandwiched between the part in the oil and the part in the oil,
    The oil flow relay, wherein the second housing portion is detachable with respect to the first housing portion in a state where the first housing portion is sealed.
  2. 　複数のボルトをさらに備え、
    　前記第１収容部は、前記第１隔壁の周囲に配置された第１筒状部と、前記第１筒状部から外に張り出す第１フランジとを含み、
    　前記第２収容部は、前記第２隔壁の周囲に配置された第２筒状部と、前記第２筒状部から外に張り出す第２フランジとを含み、
    　前記第２フランジは、前記第１フランジに向かい合っており、かつ前記複数のボルトによって前記第１フランジに対して着脱可能である、請求項１に記載の油流継電器。     Equipped with multiple bolts,
    The first accommodating portion includes a first tubular portion arranged around the first partition, and a first flange projecting outward from the first tubular portion,
    The second accommodating portion includes a second cylindrical portion arranged around the second partition, and a second flange projecting outward from the second cylindrical portion,
    2. The oil flow relay according to claim 1, wherein said second flange faces said first flange and is detachable from said first flange by means of said plurality of bolts.
  3. 　前記油中部品は、第１軸部と、前記第１軸部の先端に接続された第１球面部とを含み、
    　前記気中部品は、第２軸部と、前記第２軸部の先端に接続された第２球面部とを含み、
    　前記油中部品は、前記第１球面部において前記第１収容部に接しており、
    　前記気中部品は、前記第２球面部において前記第２収容部に接している、請求項１または２に記載の油流継電器。     The submerged component includes a first shaft portion and a first spherical portion connected to a tip of the first shaft portion,
    the aerial component includes a second shaft portion and a second spherical portion connected to a tip of the second shaft portion;
    The submerged component is in contact with the first housing portion at the first spherical portion,
    3. The oil flow relay according to claim 1, wherein said aerial component is in contact with said second accommodating portion at said second spherical portion.
PCT/JP2021/040980 2021-11-08 2021-11-08 Oil flow relay WO2023079736A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58215511A (en) * 1982-06-09 1983-12-15 Hitachi Ltd Oil flow indicator for transformer
JP2001074517A (en) * 1999-08-24 2001-03-23 G Intek Co Ltd Flow rate measuring device
CN2572349Y (en) * 2002-10-04 2003-09-10 黎贤钛 Oil flow indicator
CN201041495Y (en) * 2006-08-17 2008-03-26 沈阳市金钟电器厂 Oil flowing relay
JP2009257942A (en) * 2008-04-17 2009-11-05 Utsunomiya Seisaku Kk Flow rate sensor
CN101814396A (en) * 2010-04-06 2010-08-25 上海海鼎实业发展有限公司 One-way valve type oil flow relay

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58215511A (en) * 1982-06-09 1983-12-15 Hitachi Ltd Oil flow indicator for transformer
JP2001074517A (en) * 1999-08-24 2001-03-23 G Intek Co Ltd Flow rate measuring device
CN2572349Y (en) * 2002-10-04 2003-09-10 黎贤钛 Oil flow indicator
CN201041495Y (en) * 2006-08-17 2008-03-26 沈阳市金钟电器厂 Oil flowing relay
JP2009257942A (en) * 2008-04-17 2009-11-05 Utsunomiya Seisaku Kk Flow rate sensor
CN101814396A (en) * 2010-04-06 2010-08-25 上海海鼎实业发展有限公司 One-way valve type oil flow relay

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