WO2015133025A1 - ガス遮断器及びその投入動作用ばねの調整方法 - Google Patents

ガス遮断器及びその投入動作用ばねの調整方法 Download PDF

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Publication number
WO2015133025A1
WO2015133025A1 PCT/JP2014/081822 JP2014081822W WO2015133025A1 WO 2015133025 A1 WO2015133025 A1 WO 2015133025A1 JP 2014081822 W JP2014081822 W JP 2014081822W WO 2015133025 A1 WO2015133025 A1 WO 2015133025A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
closing operation
circuit breaker
gas circuit
storage case
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2014/081822
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English (en)
French (fr)
Japanese (ja)
Inventor
小林　剛
裕明 橋本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of WO2015133025A1 publication Critical patent/WO2015133025A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms

Definitions

  • the present invention relates to a gas circuit breaker and a method of adjusting a closing operation spring, and more particularly, a gas suitable for adjusting a spring force in a closing operation spring as a driving force source for performing a closing operation of the gas circuit breaker.
  • the present invention relates to a circuit breaker and a method for adjusting a spring for closing the circuit breaker.
  • the circuit breaker contact In general, in a gas circuit breaker, the circuit breaker contact must move between the open and closed positions at a high speed. Variations in the closing time are defined by the standard.
  • One method of adjusting the variation in the closing time between the phases within a specified value is to adjust the initial setting value of the spring force of the closing operation spring. Adjustment of the initial setting value of the spring force of the closing operation spring is often performed by removing the closing operation spring portion from the gas circuit breaker.
  • Patent Document 1 in the operation mechanism for the switching device, the spring force of the closing operation spring is not removed with a simple configuration without using a large dedicated jig. It is disclosed that it is possible to make adjustments.
  • a spring support is disposed on the back surface of a spring receiver disposed on the end face of the closing operation spring, and a screw hole for a jack bolt is provided through the spring support, and this jack bolt is provided.
  • the spring receiver and the spring for closing operation are pushed down to create a gap between the spring holder support and the spring holder, and a spring force adjusting spacer is inserted into the gap. Further, it is disclosed that the spring force of the closing operation spring is adjusted by changing the usage height of the closing operation spring.
  • the problem of lowering the layer is normally provided with a closing operation spring storage case in which a closing operation spring is stored in a lower part of the gas circuit breaker and a blocking operation spring storage case in which a blocking operation spring is stored.
  • This can be solved by arranging the existing spring actuator on the front surface of the gas circuit breaker and in line with the gas circuit breaker.
  • shut-off operation spring when the shut-off operation spring is arranged on the upper part of the closing operation spring, even if an attempt is made to adjust the spring force of the closing operation spring, it is blocked by the shut-off operation spring and accesses the closing operation spring. Will be difficult. This makes it difficult to adjust the spring force of the closing operation spring.
  • Patent Document 1 it is necessary to integrally fix the spring receiver, the spring force adjusting spacer, and the spring receiver support with fixing bolts, and to insert the spring force adjusting spacer, the spring receiver support and the spring receiver are inserted. For example, it is necessary to create a gap between the two and the work load increases due to the adjustment of the spring force.
  • the present invention has been made in view of the above points.
  • the object of the present invention is not only that the entire device can be lowered, but also a simple operation that does not increase the work load without removing the spring actuator body.
  • An object of the present invention is to provide a gas circuit breaker capable of adjusting the spring force of a closing operation spring and a method for adjusting the closing operation spring.
  • a gas circuit breaker includes a stationary contact, a movable contact that contacts and separates from the stationary contact, the stationary contact and the movable contact inside.
  • the spring operation device is arranged in a straight line, the blocking operation spring storage case is disposed above the closing operation spring storage case, and the closing operation spring storage case is disposed in the throwing operation spring storage case. Characterized in that the working tool for adjusting the spring force of the actuation spring is formed insertable work holes.
  • the method for adjusting the spring for closing operation of the gas circuit breaker according to the present invention includes a fixed contact, a movable contact that contacts and separates from the fixed contact, and the fixed contact.
  • a sealed tank having a contact and the movable contact therein; a spring operating device for driving the movable contact; and a link mechanism disposed between the sealed tank and the spring operating device for connecting the two.
  • the spring operating device includes a shut-off operation spring, a closing operation spring, a shut-off operation spring storage case for storing the shut-off operation spring, and a closing operation spring storage case for storing the closing operation spring.
  • the sealing tank, the link mechanism, and the spring operating device are arranged in a straight line, and the blocking operation spring storage case is disposed above the closing operation spring storage case, and the closing operation is performed.
  • the working tool is inserted from the working hole formed in the action spring storage case and the spring force of the closing operation spring is adjusted, the working tool is inserted into the closing spring storage case from the operating hole.
  • the working tool is mounted on an adjustment nut that is screwed into a threaded portion formed through the center of the spring receiver at the end of the spring receiver support portion, and then the adjustment nut and the spring receiver
  • the spring force of the closing operation spring is adjusted by displacing the spring receiver by tightening or loosening the screw portion of the support portion.
  • the present invention it is possible to adjust the spring force of the closing operation spring with a simple operation that does not increase the work load, without removing the spring operation device body, as well as being able to lower the entire apparatus. .
  • FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is a figure equivalent to FIG. 2 which shows the time of the spring force adjustment of the spring for making operation
  • FIG. 1 to 3 show a first embodiment of the gas circuit breaker according to the present invention.
  • the gas circuit breaker 15 is roughly constituted by a sealed tank 2 in which a blocking part is accommodated, a spring operating unit 1, and a link mechanism unit 3 that connects the spring operating unit 1 and the sealed tank 2. 2, the link mechanism part 3, and the spring operating device 1 are arranged on a straight line.
  • the sealed tank 2 is connected to a common base by legs 16a and 16b, and an insulating gas such as SF 6 gas is sealed inside the sealed tank 2 at a specified pressure.
  • an electric current is supplied to a breaker contact formed by the movable contact 17 and the fixed contact 18 through a conductor (not shown).
  • An insulating rod 19 is connected to the movable contact 17 on the opposite side in contact with the fixed contact 18, and the driving force of the spring operating device 1 acts on the insulating rod 19 via the link mechanism portion 3 to block the movable contact 17. Part contacts are opened and closed.
  • the spring operating device 1 is roughly constituted by a housing 20, a cylindrical breaking operation spring storage case 7, and a closing operation spring storage case 6 installed at a lower portion of the breaking operation spring storage case 7. Yes.
  • a control mechanism including a main lever 12, a closing cam 13 and the like is disposed in the housing 20, and a closing portion contact closing (closing) and blocking (opening) operation is performed by this control mechanism.
  • the spring operating device 1 is supported by fixing one end of a spring housing case 7 for shut-off operation and a spring housing case 6 for closing operation to a back plate 14.
  • a housing 20 is disposed on the opposite side of the back plate 14. Further, the closing operation spring storage case 6 has an opposite end connected to the back plate 14 fixed to the link mechanism 3 (see FIG. 1).
  • the blocking operation spring 5 is stored in the blocking operation spring storage case 7, and the closing operation spring 4 is stored in the closing operation spring storage case 6.
  • the blocking operation spring 5 and the closing operation spring 4 are arranged between the link mechanism unit 3 and the housing 20 so that the operation axis is lateral.
  • the operating spring 5 and the closing operation spring 4 are arranged with their operating axes parallel to the operating direction of the operating axis of the movable contact 17.
  • the closing operation spring storage case 7 and the closing operation spring storage case 6 installed at the lower part of the blocking operation spring storage case 7 have their central axes in the horizontal direction (horizontal direction). It is arranged to shift to.
  • a work hole 11 is formed above the side end of the link mechanism 3 on the side of the loading operation spring storage case 6.
  • the working hole 11 is preferably provided at a position that is not hidden by the shut-off operation spring storage case 7 when viewed from above the spring operating unit 1 and, as shown in FIG. And the upper part thereof needs to be sized and positioned so as to secure a space where a work tool such as a ratchet wrench 24 for adjusting the spring force of the closing operation spring 4 can be inserted.
  • the work hole 11 is normally blocked by a cover or the like to prevent intrusion of foreign matter (other than when adjusting the spring force of the closing operation spring 4 or other work).
  • the closing operation spring 4 is arranged and fixed so that one end thereof is in contact with the back plate 14, and the other end of the closing operation spring 4 is arranged. Are arranged and fixed so as to abut against the spring receiver 8.
  • a spring receiving support 9 having a threaded portion 9 a formed through the center of the spring receiver 8 is disposed on the outer peripheral portion of the end opposite to the closing cam 13. Is connected to one end of a closing link 22 connected to the closing cam 13 and is screwed into the threaded portion 9a with the adjusting nut 10 through the center portion of the spring receiving 8 to thereby obtain a spring bearing. 8 and the spring support portion 9 are connected, and the spring force of the closing operation spring 4 is adjusted.
  • the spring receiver 8 is formed with a recess 8a into which the spring receiver support portion 9 is fitted.
  • the spring receiver support portion 9 is formed inside the recess 8a.
  • the spring receiver 8 is displaced (moved in the left-right direction in FIG. 2).
  • a plurality of gas switchgears incorporating phase-separated three-phase gas circuit breakers are often arranged side by side. In this case, since all the phases of the phase separation type three-phase gas circuit breaker are sandwiched between the circuit breakers on both sides, it is difficult to adjust the device from the side.
  • the spring force of the closing operation spring 4 can be adjusted without removing the spring actuator 1. Workability will improve if possible.
  • the gas circuit breaker 15 in the present embodiment is arranged so that the center axes of the closing operation spring storage case 6 and the disconnection operation spring storage case 7 are shifted in the horizontal direction. It is possible to access the closing operation spring storage case 6 to adjust the spring force of the closing operation spring 4.
  • the cover of the work hole 11 provided in the loading operation spring storage case 6 is removed, a work tool such as a ratchet wrench 24 is inserted from the work hole 11, and the ratchet wrench 24 is connected to the adjusting nut 10. (See FIG. 4). Then, by rotating the ratchet wrench 24, the adjustment nut 10 screwed into the threaded portion of the spring support portion 9 is tightened or loosened, and the spring support 8 is moved in the left-right direction in FIG. Displace. That is, by tightening the adjustment nut 10, the closing operation spring 4 is stored to increase the reaction force, and by loosening the adjustment nut 10, the closing operation spring 4 is released to reduce the reaction force. can do.
  • the sealing tank 2, the link mechanism section 3 and the spring operating device 1 are arranged in a straight line, so that the entire device can be lowered, and of course the spring operating device.
  • the spring force of the closing operation spring 4 can be adjusted by a simple operation that does not increase the work load without removing the main body 1.
  • a work hole 11 may be formed below the side end of the link mechanism 3 of the spring storage case 6.
  • the present invention is not limited to the above-described embodiments, and includes various modifications.
  • the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
  • a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
PCT/JP2014/081822 2014-03-04 2014-12-02 ガス遮断器及びその投入動作用ばねの調整方法 Ceased WO2015133025A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014041238A JP6254461B2 (ja) 2014-03-04 2014-03-04 ガス遮断器及びその投入動作用ばねの調整方法
JP2014-041238 2014-03-04

Publications (1)

Publication Number Publication Date
WO2015133025A1 true WO2015133025A1 (ja) 2015-09-11

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JP (1) JP6254461B2 (enExample)
WO (1) WO2015133025A1 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016200587A1 (de) * 2016-01-19 2017-07-20 Siemens Aktiengesellschaft Auslöseeinrichtung für ein elektrisches Schaltgerät sowie Einstellverfahren
CN108682590A (zh) * 2018-06-07 2018-10-19 河南森源电气股份有限公司 一种操动机构
CN108711770A (zh) * 2018-06-15 2018-10-26 正泰电气股份有限公司 220kV气体绝缘金属封闭开关设备用断路器及应用

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10172398A (ja) * 1996-12-05 1998-06-26 Mitsubishi Electric Corp 開閉器の操作装置
JP2010160926A (ja) * 2009-01-07 2010-07-22 Hitachi Ltd 電力用ガス遮断器の異常診断装置及び方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10308144A (ja) * 1997-05-09 1998-11-17 Toshiba Corp 電力用開閉器の位置検出装置
JP5468493B2 (ja) * 2010-08-23 2014-04-09 株式会社東芝 開閉器用操作装置およびその投入ばね力調整方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10172398A (ja) * 1996-12-05 1998-06-26 Mitsubishi Electric Corp 開閉器の操作装置
JP2010160926A (ja) * 2009-01-07 2010-07-22 Hitachi Ltd 電力用ガス遮断器の異常診断装置及び方法

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JP6254461B2 (ja) 2017-12-27

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