CN106783364A - One kind solves vacuum circuit breaker spring attachment structure and method for designing - Google Patents
One kind solves vacuum circuit breaker spring attachment structure and method for designing Download PDFInfo
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- CN106783364A CN106783364A CN201611051099.3A CN201611051099A CN106783364A CN 106783364 A CN106783364 A CN 106783364A CN 201611051099 A CN201611051099 A CN 201611051099A CN 106783364 A CN106783364 A CN 106783364A
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- spring
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- circuit breaker
- arc
- vacuum circuit
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- 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
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Abstract
Vacuum circuit breaker spring attachment structure is solved the present invention relates to one kind, the attachment structure is used to connect arc-chutes and flange, including a connection unit, the connection unit includes the connecting bolt group of connection arc-chutes end and flange, the connecting bolt group include several connecting bolts along circumference of flange directional spreding and with the one-to-one locking nut of connecting bolt, the connecting bolt locked after sequentially passing through arc-chutes end and flange by locking nut；One buffer cell, the buffer cell includes corresponding and is sleeved on the buffer spring of connecting bolt outer end, and the two ends of buffer spring are against the end of arc-chutes end and flange respectively, further relate to a kind of method for designing of above-mentioned attachment structure.The advantage of the invention is that：Cause to be relatively moved between arc-chutes and flange and resetted by the effect of buffer spring, it is to avoid damage, phenomenon of rupture caused by because being rigidly connected.
Description
Technical field
It is more particularly to a kind of to solve vacuum circuit breaker spring attachment structure, Yi Jishang the present invention relates to a kind of breaker
State the method for designing of vacuum circuit breaker attachment structure.
Background technology
Vacuum interrupter, also known as vacuum switch tube, are the core components of mesohigh power switch, and its Main Function is to lead to
Crossing the excellent insulating properties of vacuum in pipe makes after mesohigh circuitry cuts power supply that rapid blow-out and electric current can be suppressed, it is to avoid accident and meaning
Outer generation, is mainly used in the transmission ＆ distribution electric control system of electric power, is also applied to metallurgy, mine, oil, chemical industry, railway, wide
Broadcast, communicate, the distribution system such as industrial high-frequency heating.With energy-conservation, section material, fire prevention, explosion-proof, small volume, long lifespan, maintenance cost
Low, reliable and pollution-free the features such as.Vacuum interrupter is divided into arc extinguishing chamber for breaker again from purposes and on-load switch is used
Arc-chutes, arc-extinguishing chamber of circuit breaker is mainly used in transformer station and electrical network facilities in power department, and on-load switch is main with arc-chutes
For the terminal user of power network.
At present, breaker commercially in use, for the connection between its arc-chutes and flange, traditional mode is adopted
It is rigidly connected mode, i.e., by way of bolt is directly connected to, and because primary cut-out is in separating brake, due to touching
During touch and separate, from small to large, in the presence of high voltage, the insulation in gap is situated between in the gap between two contacts head
Matter can be ionized and puncture, and form electric arc, and after electric arc is formed, the heat of generation can be further exacerbated by medium ionization, expand electric arc, make
Breaker cannot disconnecting circuit, in order to prevent this process, when breaker is designed, two contacts mounted in an arc extinguishing
, there are many passages interior inside arc-chutes, one is subdividing the arc, and two is the high pressure draught produced using high arc temperature, by going out
The certain channel nozzle of arc chamber blows out electric arc.Therefore, using above-mentioned this connected mode, during use, easily send out
Raw spring, and clashed into, the connection being easily caused after such long-time use between arc-chutes and flange occurs to damage, breaks
Split, influence is normally used.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of solution vacuum circuit breaker spring attachment structure, and above-mentioned
The method for designing of vacuum circuit breaker attachment structure.
In order to solve the above technical problems, the technical scheme is that：One kind solves vacuum circuit breaker spring and is tied with connection
Structure, its innovative point is：The attachment structure is used to connect arc-chutes and flange, including
One connection unit, the connection unit includes the connecting bolt group of connection arc-chutes end and flange, the connecting bolt
Group include several connecting bolts along circumference of flange directional spreding and with the one-to-one locking nut of connecting bolt, it is described
Connecting bolt is locked after sequentially passing through arc-chutes end and flange by locking nut；
One buffer cell, the buffer cell includes corresponding the buffer spring for being sleeved on connecting bolt outer end, and buffering elastic
The two ends of spring are against the end of arc-chutes end and flange respectively；
One blocker unit, the blocker unit is sleeved on obstruct cover of the flange away from arc-chutes side including one, and the obstruct cover leads to
Cross and be bolted on flange, and cover all of locking nut.
Further, the outside on the connecting bolt positioned at locking nut is also threaded with a fastening screw nut.
Further, the buffer spring is any one in disk spring or helical spring.
A kind of method for designing for solving vacuum circuit breaker spring attachment structure, its innovative point is：The method for designing
Step is：
a）Build model：Build complete vacuum circuit breaker virtual prototype；
b）Simulation analysis：Simulation analysis model is checked according to prototype test data, simulation analysis include divide-shut brake spring operating work
The analysis of the matching analysis, divide-shut brake Kinematic and closing rebound, and judge whether simulation result is consistent with result of the test, if
It is inconsistent, then vacuum circuit breaker virtual prototype is optimized, until simulation result is consistent with result of the test；
c）Spring is designed：According to space layout, the quiet side flexure spring of touch spring parameter designing, and complete quiet side flexible structure
Design；
d）Spring verification：Quiet side flexible structure is embedded into virtual prototype simulation model, and verifies whether closing rebound meets
It is required that, if being unsatisfactory for requiring, quiet side flexible structure is optimized, until closing rebound meets requiring, complete design.
Further, in the step a, when carrying out vacuum circuit breaker virtual prototype and building, appropriate letter can be carried out
Change, divide-shut brake motion will be not involved in model, have influential parts to do crash handling or deletion to Motional Characteristics of Mechanical System, will
The structural connections such as bolt, nut in moving component are deleted, and its equivalent mass is additional on its adjacent component.
Further, in the step b, simulation model is dynamic analysis initial bit in "on" position with breaker
Put, mechanism be in 1g normal gravity field action under, with the blowing pressure as 0.02MPa states under the resistance of motion for emulation initially
Condition, total simulation time is 0.35s, wherein 0 ~ 0.1ms mechanisms are in combined floodgate energy storage position；During 0.1s, tripping electromagnet is obtained
To separating brake order, mechanism starts separating brake action, and CB completes separating brake, into separating brake hold mode；At 0.2s moment, combined floodgate electromagnetism
Iron obtains order of closing a floodgate, and mechanism starts feed motion；After completing to close a floodgate, CB is in combined floodgate shape.
The advantage of the invention is that：In the present invention, being rigidly connected between traditional arc-chutes and flange be now replaced by
The mating connection mode of buffer spring and connecting bolt, being caused by the effect of buffer spring can phase between arc-chutes and flange
To mobile and reset, spring is effectively solved the problems, such as, it is to avoid damaged caused by because being rigidly connected, phenomenon of rupture, while leading to
Cross the effect of connecting bolt, it is ensured that relative position of the arc-chutes with flange when mobile, play certain guide effect；In addition,
By intercepting the setting of cover, the sealing function of insulating gas can be played.
By setting up a fastening screw nut on the outside of locking nut, it is ensured that the connection between connecting bolt and locking nut
Stability, it is to avoid cause the loosening between connecting bolt and locking nut because of the relative motion between arc-chutes and flange,
Ensure that the normal of product is used.
Can be chosen any one kind of them from disk spring or helical spring for buffer spring and selected, with variation.
For method for designing, in Simulation Analysis on Multi-body Dynamics software platform, accurately enter quality, frictional damping,
The parameters such as contact, spring, the resistance of motion and solenoid actuated, set the constraint of kinematic pair relation between parts, determine properly
Simulation analysis algorithm, build the vacuum circuit breaker virtual prototype that complete mechanism connects body, number is surveyed according to model machine
According to checking and optimization Simulation analysis model, until virtual prototype and actual model machine stroke curve, divide-shut brake speed, closing rebound and
Key position mechanical characteristic is basically identical, then according to restrictive conditions such as space layout, touch springs, completes quiet side flexibility " bullet
The Preliminary design of spring " and assembling structure, carries it into virtual prototype simulation analysis model, check its closing rebound whether meet will
Ask, if being unsatisfactory for requiring, with reference to simulation analysis result and design constraint, design optimized to quiet side flexure spring,
Then bring virtual prototype simulation analysis model into, continue to check whether its closing rebound meets requirement, so iterate optimization,
Required until closing rebound meets.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the schematic diagram of the first structure of solution vacuum circuit breaker spring attachment structure of the invention.
Fig. 2 is the side view of the first structure of solution vacuum circuit breaker spring attachment structure of the invention.
Fig. 3 is the schematic diagram of second structure of solution vacuum circuit breaker spring attachment structure of the invention.
Fig. 4 is the side view of second structure of solution vacuum circuit breaker spring attachment structure of the invention.
Fig. 5 is emulation timing distribution figure in method for designing of the invention.
Fig. 6 is 6 disc spring pairing tandem compound F-S curve maps in the method for designing in the present invention.
Fig. 7 is 10 disc spring pairing tandem compound F-S curve maps in the method for designing in the present invention.
Fig. 8 installs 6 A25 disc springs sound under different pre compressed magnitudes for symmetrical 4 position is each in method for designing in the present invention
Contact power contrast curve.
Fig. 9 installs 6 A25 disc springs sound under different pre compressed magnitudes for symmetrical 6 position is each in method for designing in the present invention
Contact power contrast curve.
Figure 10 installs 6 A25 disc springs sound under different pre compressed magnitudes for symmetrical 8 position is each in method for designing in the present invention
Contact power contrast curve.
Figure 11 is for symmetrical 4 position is respectively installed 10 A25 disc springs and moved under different pre compressed magnitudes in method for designing in the present invention
Static contact contact force contrast curve.
Figure 12 is for symmetrical 6 position is respectively installed 10 A25 disc springs and moved under different pre compressed magnitudes in method for designing in the present invention
Static contact contact force contrast curve.
Figure 13 is for symmetrical 8 position is respectively installed 10 A25 disc springs and moved under different pre compressed magnitudes in method for designing in the present invention
Static contact contact force contrast curve.
Specific embodiment
The following examples can make professional and technical personnel that the present invention is more fully understood, but therefore not send out this
It is bright to be limited among described scope of embodiments.
A kind of solution vacuum circuit breaker spring attachment structure as shown in Figure 1 and Figure 2, the attachment structure is gone out for connection
Arc chamber 1 and flange 2, including
One connection unit, the connection unit includes the end of connection arc-chutes 1 and the connecting bolt group of flange 2, the connection
Bolt group include it is several along the circumferencial direction of flange 2 be distributed connecting bolts 4 and with the one-to-one locking screw of connecting bolt 4
Female 6, connecting bolt 4 is locked after sequentially passing through the end of arc-chutes 1 and flange 2 by locking nut 6.
As shown in Fig. 2 the outside positioned at locking nut 6 on connecting bolt 4 is also threaded with a fastening screw nut 7.It is logical
Cross and set up a fastening screw nut 7 in the outside of locking nut 6, it is ensured that the stabilization being connected between connecting bolt 4 and locking nut 6
Property, it is to avoid cause the loosening between connecting bolt 5 and locking nut 6 because of the relative motion between arc-chutes 1 and flange 2, protect
The normal of card product is used.
One buffer cell, the buffer cell includes corresponding the buffer spring for being sleeved on the outer end of connecting bolt 4, and buffering
The two ends of spring are against the end of arc-chutes 1 and the end of flange 2 respectively, in the present embodiment, buffer spring use by
Some stackings of disk spring 5 form mode.
Buffer spring is in addition to using disk spring 5, it would however also be possible to employ helical spring 11, as shown in figure 3, using spiral
During spring 11, there is a groove for holding the insertion of helical spring 11, such as Fig. 4 respectively in the end of the end of arc-chutes 1 and flange 2
It is shown.Can be chosen any one kind of them from disk spring or helical spring for buffer spring and selected, with variation.
One blocker unit, the blocker unit is sleeved on obstruct cover 3 of the flange 2 away from the side of arc-chutes 1, the obstruct including one
Cover 3 is bolted on flange 2, and covers all of locking nut 6 and fastening screw nut 7.By intercepting the setting of cover 3,
The sealing function of insulating gas can be played.
Being rigidly connected between traditional arc-chutes 1 and flange 2 is now replaced by the cooperation of buffer spring and connecting bolt 4
Connected mode, causes to be relatively moved between arc-chutes 1 and flange 2 and resetted by the effect of buffer spring, effective solution
Determine spring problem, it is to avoid damaged caused by because being rigidly connected, phenomenon of rupture, while the effect for passing through connecting bolt, it is ensured that
Relative position of the arc-chutes with flange when mobile, plays certain guide effect.
The method for designing of above-mentioned solution vacuum circuit breaker spring attachment structure is concretely comprised the following steps：
The first step, builds model：Complete vacuum circuit breaker virtual prototype is built, vacuum circuit breaker virtual prototype is being carried out
During model buildings, can suitably be simplified, divide-shut brake motion will be not involved in model, does not have influential zero on Motional Characteristics of Mechanical System
Part does crash handling or deletion, and the structural connections such as the bolt in moving component, nut are deleted, and its equivalent mass is attached
It is added on its adjacent component.
Second step, simulation analysis：Simulation analysis model is checked according to prototype test data, simulation analysis include divide-shut brake bullet
The analysis of spring operating work the matching analysis, divide-shut brake Kinematic and closing rebound, and judge whether simulation result is tied with experiment
Fruit is consistent, if inconsistent, vacuum circuit breaker virtual prototype is optimized, until simulation result and result of the test one
Cause.
When simulation analysis are carried out, simulation model is dynamic analysis initial position, machine in "on" position with breaker
Structure be in 1g normal gravity field action under, with the blowing pressure as 0.02MPa states under the resistance of motion for emulate primary condition,
Total simulation time is 0.35s, wherein 0 ~ 0.1ms mechanisms are in combined floodgate energy storage position；During 0.1s, tripping electromagnet obtains separating brake
Order, mechanism starts separating brake action, and CB completes separating brake, into separating brake hold mode；At the 0.2s moment, making electromagnet is obtained
Close a floodgate and order, mechanism starts feed motion；After completing to close a floodgate, CB is in combined floodgate shape, as shown in Figure 5.
3rd step, spring design：According to space layout, the quiet side flexure spring of touch spring parameter designing, and complete quiet side
The design of flexible structure.
When spring design is carried out, monolithic disc spring working characteristics is unstable, and real work stroke can exceed that deformation allowable
Amount, 75% is maximum deformation quantity, on the one hand for the ease of control pre compressed magnitude, on the other hand avoids impulse stroke from exceeding change allowable
Shape amount, in combination with mounting structure space factor, it is considered to two kinds of disc spring assembled schemes, one is 6 disc spring pairing series connection, and two are
10 disc spring pairing series connection, disc spring mount scheme has three kinds, and one is that symmetrical 4 position is installed, and two is that symmetrical 6 position is installed, and three
It is that symmetrical 8 position is installed.
In the present embodiment, from disc spring specification be A25, design parameter as shown in table 1,
| Disc spring specification | D/mm | d/mm | t/mm | h0/mm | H0/mm |
| A25 | 25 | 12.2 | 1.5 | 0.55 | 2.05 |
Table 1
Using international top-brand Mubea vendor specific disc spring design programs（Disc_Spring_Calculation_Program_
03.xls）Can be calculated：As shown in Fig. 6,6 combination total heights are 6 disc spring pairing tandem compound F-S curves
12.3mm, maximum deformation quantity is 3.3mm, and deflection allowable is 2.475mm；10 disc spring pairing tandem compound F-S curves are such as
Shown in Fig. 7,10 combination total heights are 20.5mm, and maximum deformation quantity is 5.5mm, and deflection allowable is 4.125mm, is now passed through
Closing rebound characteristic under dynamic analysis disc spring various combination scheme, different mount schemes, different pre compressed magnitudes.On flange
Disc spring force is loaded in the form of non-coplanar force, specific input is as follows：
F=AKISPL(ABS(DY(MARKER_2564,MARKER_2565))+Diehuang_Yuyasuo,0,SPLINE_3_
A25_6Pian, 0) * 8*-1, wherein " SPLINE_3_A25_6Pian " represents combination disk spring F-S curves, " 8 " represent installation position
Put.
4th step, spring verification：Quiet side flexible structure is embedded into virtual prototype simulation model, and verifies closing rebound
Whether satisfaction is required, if being unsatisfactory for requiring, quiet side flexible structure is optimized, until closing rebound meets requiring, is completed
Design.
Vacuum circuit breaker opening velocity is average speed between 23mm after firm branch to firm branch, and emulation can obtain opening velocity V
Point=1.95m/s；Closing speed is average speed between 23mm before firm chalaza to firm chalaza, emulation can obtain closing speed V close=
0.85m/s, under this closing speed operating mode, sound is touched under disc spring various combination scheme, different mount schemes, different pre compressed magnitudes
Head contact force curve is as shown in Fig. 8 ~ Figure 13, and closing rebound analysis result statistics is as shown in table 2
Table 2
Analysis below conclusion can be drawn by statistics：Under multi-disc disc spring multiple location arrangements scheme, pre compressed magnitude very little
When, closing rebound characteristic is relatively preferable, may be better than former rigid structure, it is also possible to poorer than former rigid structure, works as precommpression
When amount increases to first critical value, the closing rebound time becomes rapidly very big, caused by mainly later stage dynamic/static contact is separated, dish
Spring integral rigidity is bigger, and the corresponding pre compressed magnitude critical value of closing rebound mutation is smaller, then as decrement gradually increases, closes
Lock bounce time is gradually reduced, and when pre compressed magnitude increases to second critical value, the closing rebound time is zero, further increase
Pre compressed magnitude, closing rebound time holding zero is constant, and disc spring integral rigidity is bigger, and closing rebound is reduced to zero corresponding pre compressed magnitude
Critical value is smaller.It is symmetrically installed position more, disc spring composite rigidity is bigger, closing rebound reaches zero corresponding pre compressed magnitude and gets over
It is small；Disc spring involution piece number is more, and disc spring working deformation amount is bigger, and assembling is more easily controlled, from the point of view of simulation analysis result, preferentially
Recommend disc spring allocation plan be：Symmetrical 8 position respectively fills 10 A25 disc springs between counter flange and wiring flange, disc spring it
Between pairing be in series, pre compressed magnitude control in 2 ~ 3mm.
So it may be concluded that：It is symmetrically installed position more, disc spring integral rigidity is bigger, and it is corresponding that closing rebound reaches zero
Pre compressed magnitude is smaller；Disc spring involution piece number is more, and disc spring working deformation amount is bigger, and pre compressed magnitude is got over and is easily controlled, from emulation point
From the point of view of analysis result, preferential recommendation disc spring allocation plan is：Symmetrical 8 position respectively fills 10 between counter flange and wiring flange
A25 disc springs, pairing is in series between disc spring, and pre compressed magnitude is controlled in 2 ~ 3mm.
It should be understood by those skilled in the art that, the present invention is not limited to the above embodiments, above-described embodiment and explanation
Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
By appending claims and its equivalent thereof.
Claims (6)
- It is 1. a kind of to solve vacuum circuit breaker spring attachment structure, it is characterised in that：The attachment structure be used for connect arc-chutes with Flange, includingOne connection unit, the connection unit includes the connecting bolt group of connection arc-chutes end and flange, the connecting bolt Group include several connecting bolts along circumference of flange directional spreding and with the one-to-one locking nut of connecting bolt, it is described Connecting bolt is locked after sequentially passing through arc-chutes end and flange by locking nut；One buffer cell, the buffer cell includes corresponding the buffer spring for being sleeved on connecting bolt outer end, and buffering elastic The two ends of spring are against the end of arc-chutes end and flange respectively；One blocker unit, the blocker unit is sleeved on obstruct cover of the flange away from arc-chutes side including one, and the obstruct cover leads to Cross and be bolted on flange, and cover all of locking nut.
- It is 2. according to claim 1 to solve vacuum circuit breaker spring attachment structure, it is characterised in that：The connection spiral shell Outside on bolt positioned at locking nut is also threaded with a fastening screw nut.
- It is 3. according to claim 1 to solve vacuum circuit breaker spring attachment structure, it is characterised in that：The buffer spring It is any one in disk spring or helical spring.
- 4. a kind of method for designing of the solution vacuum circuit breaker spring attachment structure realized described in claim 1, its feature exists In：The step of method for designing is：a）Build model：Build complete vacuum circuit breaker virtual prototype；b）Simulation analysis：Simulation analysis model is checked according to prototype test data, simulation analysis include divide-shut brake spring operating work The analysis of the matching analysis, divide-shut brake Kinematic and closing rebound, and judge whether simulation result is consistent with result of the test, if It is inconsistent, then vacuum circuit breaker virtual prototype is optimized, until simulation result is consistent with result of the test；c）Spring is designed：According to space layout, the quiet side flexure spring of touch spring parameter designing, and complete quiet side flexible structure Design；d）Spring verification：Quiet side flexible structure is embedded into virtual prototype simulation model, and verifies whether closing rebound meets It is required that, if being unsatisfactory for requiring, quiet side flexible structure is optimized, until closing rebound meets requiring, complete design.
- 5. it is according to claim 4 solve vacuum circuit breaker spring attachment structure method for designing, it is characterised in that：Institute In stating step a, when carrying out vacuum circuit breaker virtual prototype and building, can suitably be simplified, will be not involved in model point Close a floodgate and move, do not have influential parts to do crash handling or deletion to Motional Characteristics of Mechanical System, by the bolt in moving component, spiral shell The structural connections such as mother are deleted, and its equivalent mass is additional on its adjacent component.
- 6. it is according to claim 4 solve vacuum circuit breaker spring attachment structure method for designing, it is characterised in that： In the step b, simulation model is dynamic analysis initial position in "on" position with breaker, and mechanism is in 1g's Under normal gravity field action, with the blowing pressure as 0.02MPa states under the resistance of motion be emulation primary condition, total simulation time is 0.35s, wherein 0 ~ 0.1ms mechanisms are in combined floodgate energy storage position；During 0.1s, tripping electromagnet obtains separating brake order, and mechanism opens Beginning separating brake is acted, and CB completes separating brake, into separating brake hold mode；At the 0.2s moment, making electromagnet obtains close a floodgate order, machine Structure starts feed motion；After completing to close a floodgate, CB is in combined floodgate shape.
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|---|---|---|---|
| CN201611051099.3A CN106783364A (en) | 2016-11-25 | 2016-11-25 | One kind solves vacuum circuit breaker spring attachment structure and method for designing |
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|---|---|---|---|
| CN201611051099.3A CN106783364A (en) | 2016-11-25 | 2016-11-25 | One kind solves vacuum circuit breaker spring attachment structure and method for designing |
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Cited By (1)
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| CN108648956A (en) * | 2018-03-23 | 2018-10-12 | 湖北大禹汉光真空电器有限公司 | A kind of vacuum arc extinguishing chamber corrugated tube of bounce-proof |
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Application publication date: 20170531 |
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