CN106960738A - A kind of high-speed circuit breaker mixed type buffer - Google Patents

A kind of high-speed circuit breaker mixed type buffer Download PDF

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Publication number
CN106960738A
CN106960738A CN201710286005.9A CN201710286005A CN106960738A CN 106960738 A CN106960738 A CN 106960738A CN 201710286005 A CN201710286005 A CN 201710286005A CN 106960738 A CN106960738 A CN 106960738A
Authority
CN
China
Prior art keywords
buffer
type buffer
collision cell
mixed type
circuit breaker
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.)
Pending
Application number
CN201710286005.9A
Other languages
Chinese (zh)
Inventor
刘国伟
刘彬
吕玮
杨兵
石巍
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.)
NR Electric Co Ltd
NR Engineering Co Ltd
Original Assignee
NR Electric Co Ltd
NR Engineering Co 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 NR Electric Co Ltd, NR Engineering Co Ltd filed Critical NR Electric Co Ltd
Priority to CN201710286005.9A priority Critical patent/CN106960738A/en
Publication of CN106960738A publication Critical patent/CN106960738A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/60Mechanical arrangements for preventing or damping vibration or shock

Abstract

The present invention relates to a kind of high-voltage high-speed breaker mixed type buffer, it includes, realize that the collision type buffer of fast braking is buffered as the first order, realize that move consumable buffer buffers as the second level, the above-mentioned first order, second level buffering are combined into a complete assembly, pooling feature is realized, and external mounting interface is provided.The present invention can be met to work under conditions of by the movement velocity of buffering objects high (being greater than 15m/S), cushion stroke short (being, for example, less than 5mm), is particularly well suited as the splitting lock cushioning of high-speed circuit breaker.

Description

A kind of high-speed circuit breaker mixed type buffer
Technical field
The invention belongs to field of circuit breakers, and in particular to a kind of high-speed circuit breaker mixed type buffer.
Background technology
Very high is required to the divide-shut brake speed of breaker in direct current power system, is rapid excision short trouble, often needs Separating brake action will be completed in several milliseconds.The similar operating mechanism based on principles such as vortex repulsive force mechanisms can be direct current Breaker provides sufficiently fast on/off operation mechanism.But while service speed is improved, also the separating brake used by breaker is delayed Rush device and propose higher requirement, buffer used in DC high-speed switch must solve two problems:One is how to ensure Serious separating brake bounce-back is occurred without under high-speed condition;Two be how to make in compared with minibuffer stroke moving-conductor speed it is rapid under Drop, to improve the opening velocity of vortex repulsive force mechanism.
Conventional AC system circuit breaker widely uses spring, hydraulic pressure, solid elastic dielectrics etc. as buffer, on the one hand because Opening time for ac hv breaker moving-conductor is longer, generally requires several ms, the movement velocity of breaker moving-conductor Not high, generally below 2m/s, separating brake rebound phenomena is not serious;On the other hand, because operating mechanism is operated in relative low speeds Operating mode under so that the permission cushion stroke of conventional AC breaker is longer, and buffer device can use and access buffering ring ahead of time The mode of operation of section.In the case, above-mentioned buffer can meet service speed it is not high in the case of buffering energy supply.But with The raising that dc circuit breaker is required opening time, above-mentioned convention buffer can not meet use requirement.
Based on aforementioned need, thus this case produces.
The content of the invention
The purpose of the present invention, is to provide a kind of quick method effectively buffered of realization under the conditions of short distance, speed buffering, It makes use of mixing buffer technology, buffered first by the collision bumper based on principle of conservation of momentum as the first order, make to break Device moving-conductor speed in very short time in road will be zero rapidly, complete the sub-switching operation of conductor, meanwhile, it is used as touching for rigid objects Unit is hit by the kinetic energy absorption of moving-conductor, continues to move, into the conventional buffer stage in the second level, in this first-level buffer, collision body The most by buffer unit, its stroke, speed, kinetic characteristic are no longer influenced by foregoing restriction, are able to real in more loose mode It is existing, it after the buffering of collision body terminates, should be able to reset, think to buffer next time and preferably prepare.
In order to reach above-mentioned purpose, solution of the invention is:
The implementation of mixed at high speed type buffer, comprises the following steps:
(1) set rigid collision unit to be buffered as the first order, after moving-conductor touches collision cell, kinetic energy is transmitted To the latter in free state, while itself speed is reduced to rapidly zero, the separating brake action of breaker is realized, collision cell absorbs The kinetic energy of moving-conductor continues to move;
(2) collision cell is absorbed after the kinetic energy from moving-conductor, continues to move until the piston of contact second level buffer Part, and kinetic energy is gradually used up until stopping, completing single action of giving with piston movement.Second level buffering can be following But it is not limited only to following type buffer (gas, liquid, solid composite material);
(3) after the collision cell speed of mixed at high speed type buffer will be zero, the back-moving spring being disposed thereon is just It is reset to original position, prepares buffer circle next time;
(4) collision cell 2, power consumption unit 6, the part such as back-moving spring 4 by overall package in lower case 7, making at a high speed Mixed type buffer turns into a complete assembly and provides mounting interface, is easily installed and uses.
(5) collision cell 6 of high speed compound buffer sets the lead column 8 with guide function, fairlead 5, sets tool The limited block 9 of limited bit function.
After such scheme, the invention has the characteristics that:
(1) first order collision cell is used, is that breaker moving-conductor speed drops to rapidly zero, realizes under high-speed case Fast cache;
(2) kinetic energy is effectively consumed in relatively long distance using second level power consumption unit, and do not opened effectively by arc-chutes away from Limitation, protective efficient switch equipment;
(3) it is simple in construction, it is easy for installation, easily realize, can be applied to the other circuit-breaker switching on-off buffer requirement of Millisecond.
Brief description of the drawings
Fig. 1 is the overall structure figure of the present invention;Wherein 1 is muffler;2 be collision cell;3 be shell;4 be reset bullet Spring;5 be fairlead;6 be power consumption unit;7 be support base;8 be lead column;9 be limited block.
Embodiment
Below with reference to accompanying drawing, technical scheme is described in detail.
As shown in figure 1, the present invention provides a kind of breaker mixed at high speed type buffer
(1) set rigid collision unit to be buffered as the first order, after moving-conductor touches collision cell, kinetic energy is transmitted To the latter in free state, while itself speed is reduced to rapidly zero, the separating brake action of breaker is realized, collision cell absorbs The kinetic energy of moving-conductor continues to move;
(2) collision cell is absorbed after the kinetic energy from moving-conductor, continues to move until the piston of contact second level buffer Part, and kinetic energy is gradually used up until stopping, completing single action of giving with piston movement.Second level buffering can be following But it is not limited only to following type buffer (gas, liquid, solid composite material);
(3) after the collision cell speed of mixed at high speed type buffer will be zero, the back-moving spring being disposed thereon is just It is reset to original position, prepares buffer circle next time;
(4) part such as collision cell 2, power consumption unit 6, back-moving spring 4 is mixed at a high speed in support base 7, making by overall package Mould assembly buffer turns into a complete assembly and provides mounting interface, is easily installed and uses.
(5) collision cell 6 of high speed compound buffer sets the lead column 8 with guide function, fairlead 5, sets tool The limited block 9 of limited bit function.
The technological thought of above example only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within the scope of the present invention Within.

Claims (4)

1. a kind of high-speed circuit breaker mixed type buffer, including muffler (1) and shell (3), it is characterised in that:Also include touching Unit (2) and consumable unit (6) are hit, the collision cell (2) is used as level 2 buffering, two as first-level buffer, consumable unit (6) The common speed buffering completed to primary cut-out moving conductive rod in part;
The collision cell (2) is rigid body, by shifting the kinetic energy of moving conductive rod, realizes the fast braking of moving conductive rod, also It is provided with the motion of lead column (8) and fairlead (5) control collision cell (2);
The consumable unit (6) is buffer, realizes the braking of collision cell (2);
The package casing of the mixed type buffer is provided with stopping means (9).
2. high-speed circuit breaker as claimed in claim 1 mixed type buffer, it is characterised in that:The collision cell (2) by Back-moving spring (4) is supported, and realizes the reset function in a buffer circle.
3. high-speed circuit breaker as claimed in claim 1 mixed type buffer, it is characterised in that:It is described power consumption unit (6) be Fluid or solid buffer device.
4. high-speed circuit breaker as claimed in claim 1 mixed type buffer, it is characterised in that:Collision cell (2), power consumption are single First (6), by overall package in the bottom of shell (3), shell (3) makes buffer turn on a complete assembly, shell (3) also It is provided with mounting interface.
CN201710286005.9A 2017-04-27 2017-04-27 A kind of high-speed circuit breaker mixed type buffer Pending CN106960738A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710286005.9A CN106960738A (en) 2017-04-27 2017-04-27 A kind of high-speed circuit breaker mixed type buffer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710286005.9A CN106960738A (en) 2017-04-27 2017-04-27 A kind of high-speed circuit breaker mixed type buffer

Publications (1)

Publication Number Publication Date
CN106960738A true CN106960738A (en) 2017-07-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710286005.9A Pending CN106960738A (en) 2017-04-27 2017-04-27 A kind of high-speed circuit breaker mixed type buffer

Country Status (1)

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CN (1) CN106960738A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109038295A (en) * 2018-08-13 2018-12-18 浙江华仪电器科技有限公司 A kind of buffer unit and its high-tension switch cabinet for operating mechanism
CN111044889A (en) * 2019-11-19 2020-04-21 平高集团有限公司 Method for measuring reset time of damping type closing resistor of high-voltage circuit breaker

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101221866A (en) * 2008-01-28 2008-07-16 中国电力科学研究院 Switching-on buffering mechanism in breaker
CN201156497Y (en) * 2008-01-28 2008-11-26 中国电力科学研究院 Switching-on buffering mechanism in breaker
CN201256089Y (en) * 2008-08-11 2009-06-10 瓦房店高压开关有限公司 Valve division buffering mechanism for circuit breaker
WO2011043076A1 (en) * 2009-10-09 2011-04-14 株式会社 東芝 Shock absorber of operation mechanism for opening and closing device and method for lubricating same
CN202549643U (en) * 2012-02-17 2012-11-21 平高集团有限公司 Buffer for high-voltage switch
CN106356211A (en) * 2016-10-13 2017-01-25 武汉船用电力推进装置研究所(中国船舶重工集团公司第七二研究所) Gas buffer device for high-speed repulsion mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101221866A (en) * 2008-01-28 2008-07-16 中国电力科学研究院 Switching-on buffering mechanism in breaker
CN201156497Y (en) * 2008-01-28 2008-11-26 中国电力科学研究院 Switching-on buffering mechanism in breaker
CN201256089Y (en) * 2008-08-11 2009-06-10 瓦房店高压开关有限公司 Valve division buffering mechanism for circuit breaker
WO2011043076A1 (en) * 2009-10-09 2011-04-14 株式会社 東芝 Shock absorber of operation mechanism for opening and closing device and method for lubricating same
CN202549643U (en) * 2012-02-17 2012-11-21 平高集团有限公司 Buffer for high-voltage switch
CN106356211A (en) * 2016-10-13 2017-01-25 武汉船用电力推进装置研究所(中国船舶重工集团公司第七二研究所) Gas buffer device for high-speed repulsion mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109038295A (en) * 2018-08-13 2018-12-18 浙江华仪电器科技有限公司 A kind of buffer unit and its high-tension switch cabinet for operating mechanism
CN111044889A (en) * 2019-11-19 2020-04-21 平高集团有限公司 Method for measuring reset time of damping type closing resistor of high-voltage circuit breaker
CN111044889B (en) * 2019-11-19 2021-12-17 平高集团有限公司 Method for measuring reset time of damping type closing resistor of high-voltage circuit breaker

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Application publication date: 20170718