CN104821247A - Method for debugging and calibrating vacuum contactor in explosion-proof switch - Google Patents
Method for debugging and calibrating vacuum contactor in explosion-proof switch Download PDFInfo
- Publication number
- CN104821247A CN104821247A CN201510192395.4A CN201510192395A CN104821247A CN 104821247 A CN104821247 A CN 104821247A CN 201510192395 A CN201510192395 A CN 201510192395A CN 104821247 A CN104821247 A CN 104821247A
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- contactor
- vacuum
- explosion
- vacuum contactor
- phase
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H2011/0075—Apparatus or processes specially adapted for the manufacture of electric switches calibrating mechanical switching properties, e.g. "snap or switch moment", by mechanically deforming a part of the switch, e.g. elongating a blade spring by puncturing it with a laser
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention relates to a method for debugging and calibrating a vacuum contactor in an explosion-proof switch. The method comprises an S1 step of observing whether a vacuum tube is mounted straight, and if not, adjusting until the vacuum tube becomes straight; an S2 step of adjusting the depth of a bolt in a screw hole of the vacuum tube, with an opening travel being 2+/-0.2mm and an over travel being 1+/-0.2mm; an S3 step of observing whether a normally closed contact of a coil is disconnected, and if not, disconnecting the normally closed contact; and an S4 step of calibrating the vacuum contactor. The debugged and calibrated vacuum contactor is used for application to an excavation working face, the three-phase synchronous contact performance is excellent, therefore, a switch or a motor will not be burned, excellent basic conditions are created to ensure safety production, related electrical and mechanical accidents are avoided, significant safety benefits are reflected, and the expense and cost are saved.
Description
Technical field
The present invention relates to colliery and gather equipment and technology industry, especially relate to vacuum contactor debugging method of calibration in a kind of explosion-proof switch.
Background technology
In channel of coal mining working surface is produced, due to the frequent starting of chain mat machine, as QC83-8O switch etc., often there will be wallboard by arc through, the overheated scorification of disconnecting link, main contact clinkering, to such an extent as to the generation of the phenomenons such as impact production.The utilization rate of vacuum contactor in its switch, its failure rate is also high, and a collection of new switch-vacuum switch (QBZ-80) of rear introduction, after coming into operation, vacuum switch is easy burn-out not, long service life, the also various mal-condition of ability, but, also there are some defects in it, in such as vacuum switch, vacuum contactor three-phase synchronous is difficult to debug, and single phasing when therefore normal appearance starts, causes the consequence of burning motor.
Summary of the invention
Technical problem to be solved by this invention is to provide and a kind ofly conveniently can regulates vacuum contactor debugging method of calibration in the explosion-proof switch extending vacuum contactor useful life.
The present invention solves the technical scheme that its technical problem takes: vacuum contactor debugging method of calibration in a kind of explosion-proof switch, and described debugging method of calibration step is:
Whether S1, first, observe vacuum tube and install straight, be adjusted to straight if not straight;
Secondly S2, regulate the degree of depth of vacuum tube screw inner bolt, open apart from 2 ± 0.2mm, the excess of stroke 1 scholar 0.2mm;
S3, afterwards, whether the normally closed contact observing wiring circle disconnects, if do not disconnect, makes it disconnect;
S4, last, vacuum contactor is verified.
Concrete further, the method verified in described step S4 is: contactor switches on power and motor, starting contactor, if can not inhale or motor single-phase, now should have a power failure and adjust again, until can till starter motor.
Concrete further, the method verified in described step S4 is: contactor is connected with three-phase current reflector, three-phase current transmitter currents is raised to 3OA, measure three-phase resistance, if equally large, then synchronism mixes up, if different, regulating resistance is less, until three-phase current reflector three-phase resistance is equally large.
The invention has the beneficial effects as follows: the vacuum contactor adopting debugging to verify is applied at getting working face, its three-phase synchronous contact is good, therefore switch or motor can not be burnt, good basic condition is created for guaranteeing safe production, the relevant Electromechanical Accidents avoiding initiation occurs, also reflects the safety benefit of highly significant, cost of reducing expenses.
Embodiment
Below the present invention is explained in detail.
Vacuum contactor debugging method of calibration in a kind of explosion-proof switch, described debugging method of calibration step is:
Whether S1, first, observe vacuum tube and install straight, be adjusted to straight if not straight; Structure in vacuum tube: fixed contact is welded on static conductive rod, moving contact welds mutually with telescopic metal bellows, when contact mount is installed three-phase vacuum tube, in bolt precession vacuum tube screw, moving contact is pulled out, below vacuum tube, suitably pad a little fish paper, after vacuum tube is installed, reach straight requirement.The vacuum tube of province like this is accidentally stressed to be bent downwardly, and in pipe, the motion in pipe of metal bellows moving conductive rod gets up to have jam phenomenon, even can not move, cause motor not run well.
Secondly S2, regulate the degree of depth of vacuum tube screw inner bolt, three-phase vacuum tube head end three tightening bolts have three little springs, plays cushion effect effect.Adjustment requirement is: open apart from 2 ± 0.2mm, the excess of stroke 1 scholar 0.2mm, uses tour lever kind of calliper.During first adjustment tightening bolt, make the degree of depth in bolt precession pipe screw reach requirement: 1. to allow armature as far as possible away from iron core, certainly the big spring below armature being forced up increase spring force is also a factor.2. connect 36V power supply, contactor is sucked up crisp.After regulating three-phase tightening bolt to reach adjustment requirement, measure with universal instrument ohms range when armature sucts, if when having obstructed, regulate tightening bolt to be rotated counterclockwise, till table leads to.
S3, afterwards, whether the normally closed contact observing wiring circle disconnects, if do not disconnect, makes it disconnect; Require: the normally closed contact of wiring circle will disconnect because of armature adhesive, self-insurance junction closure.The problem paid special attention to: normally closed contact must disconnect, if do not disconnect, the time one is long, and coil can burn.Because coil will lead to the electric current of 2 times during armature adhesive, after adhesive, change the electric current of 1 times into, maintain armature adhesive.Armature and iron core are installed and will be put down, and during adhesive, the iron core of armature and two coils is very close to each other, tight adhesive, ensure that armature and iron core do not have leakage field to resist, reduce iron core, coil temperature, in order to avoid coil insulation premature degradation.The iron plate that armature card is installed and travel switch upper moveable rod will have a gap, because normally closed contact can not just disconnect during armature adhesive, a period of time be retained once, if iron plate and lever very close to each other, contactor does not overcome the bounce of spring, and contactor is not just inhaled.Close contact and connect the polarity free capacitor of certain capacity.Because during contact, by the big current of 2 times, during disconnection, electric spark can be produced.Starting contactor so frequently, the mercury contact on contact uses long afterwards easily oxidation damage, increases contact resistance, causes contactor to be inhaled not in place.Its consequence to burn out coil.So shunt-wound capacitance absorbs energy when disconnecting, avoid producing electric spark, extend contact endurance, ensure that coil can not burn out.
S4, last, vacuum contactor is verified.
Before a vacuum contactor mixed up drops into down-hole use, need to verify on the ground.Verification way has two kinds: 1. ground connects the motor of two 3Okw, two empty load of motor electric currents and be about about 25A, close to down-hole chain mat machine load.36V power supply is obtained by 660V/36V step-down transformer, and one side joint is on vacuum contactor power supply, and starting contactor, if vacuum contactor can not be inhaled or the single-phase motion of motor, now should have a power failure and adjust, until can starter motor.Secondly measure with clamp on amperemeter, three-phase current, in error range planted agent balance, finally should be the same by the temperature that hand touches three vacuum tubes, is more or less the same with room temperature.Reach above these and require that just calculating vacuum contactor synchronism has mixed up.2. verify with three-phase current reflector.Allow three-phase current transmitter currents be raised to 3OA, measuring three-phase resistance has much, if equally large, then synchronism mixes up, if different, the phase that resistance is little will be adjusted (adjusting stretching screw counterclockwise), until current transmitters three-phase resistance is equally large.
It is emphasized that: be only preferred embodiment of the present invention above, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (3)
1. a vacuum contactor debugging method of calibration in explosion-proof switch, it is characterized in that, described debugging method of calibration step is:
Whether S1, first, observe vacuum tube and install straight, be adjusted to straight if not straight;
Secondly S2, regulate the degree of depth of vacuum tube screw inner bolt, open apart from 2 ± 0.2mm, the excess of stroke 1 scholar 0.2mm;
S3, afterwards, whether the normally closed contact observing wiring circle disconnects, if do not disconnect, makes it disconnect;
S4, last, vacuum contactor is verified.
2. vacuum contactor debugging method of calibration in explosion-proof switch according to claim 1, it is characterized in that, the method verified in described step S4 is: contactor switches on power and motor, starting contactor, if can not inhale or motor single-phase, now should have a power failure and adjust again, till energy starter motor.
3. vacuum contactor debugging method of calibration in explosion-proof switch according to claim 1, it is characterized in that, the method verified in described step S4 is: contactor is connected with three-phase current reflector, three-phase current transmitter currents is raised to 3OA, measures three-phase resistance, if equally large, then synchronism mixes up, if different, regulating resistance is less, until three-phase current reflector three-phase resistance is equally large.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192395.4A CN104821247A (en) | 2015-04-22 | 2015-04-22 | Method for debugging and calibrating vacuum contactor in explosion-proof switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192395.4A CN104821247A (en) | 2015-04-22 | 2015-04-22 | Method for debugging and calibrating vacuum contactor in explosion-proof switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104821247A true CN104821247A (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510192395.4A Pending CN104821247A (en) | 2015-04-22 | 2015-04-22 | Method for debugging and calibrating vacuum contactor in explosion-proof switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410646A (en) * | 2016-11-07 | 2017-02-15 | 河钢股份有限公司邯郸分公司 | Fault rapid determining and processing operation method of AC-DC-AC high-voltage frequency converter |
Citations (3)
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| CN201417390Y (en) * | 2007-09-28 | 2010-03-03 | 洛克威尔自动控制技术股份有限公司 | Control system for multiple vacuum contactors |
| US20130257438A1 (en) * | 2012-03-27 | 2013-10-03 | Douglas Hogg | Testing a circuit assembly that contains a piezoelectric switch |
| EP2725597A1 (en) * | 2012-10-29 | 2014-04-30 | Omicron electronics GmbH | Method for diagnosing a self-blowing switch and diagnostic device |
-
2015
- 2015-04-22 CN CN201510192395.4A patent/CN104821247A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201417390Y (en) * | 2007-09-28 | 2010-03-03 | 洛克威尔自动控制技术股份有限公司 | Control system for multiple vacuum contactors |
| US20130257438A1 (en) * | 2012-03-27 | 2013-10-03 | Douglas Hogg | Testing a circuit assembly that contains a piezoelectric switch |
| EP2725597A1 (en) * | 2012-10-29 | 2014-04-30 | Omicron electronics GmbH | Method for diagnosing a self-blowing switch and diagnostic device |
Non-Patent Citations (1)
| Title |
|---|
| 邹叙彪, 陈庆和, 郑细荣: "真空接触器的调试及校验", 《江西煤炭科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410646A (en) * | 2016-11-07 | 2017-02-15 | 河钢股份有限公司邯郸分公司 | Fault rapid determining and processing operation method of AC-DC-AC high-voltage frequency converter |
| CN106410646B (en) * | 2016-11-07 | 2018-02-06 | 河钢股份有限公司邯郸分公司 | A kind of failure for handing over orthogonal high voltage converter quickly judges and processing operating method |
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Application publication date: 20150805 |
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| RJ01 | Rejection of invention patent application after publication |