CN106653472A - Mechanical emergency starting apparatus applied to star-delta voltage-reduction starting - Google Patents
Mechanical emergency starting apparatus applied to star-delta voltage-reduction starting Download PDFInfo
- Publication number
- CN106653472A CN106653472A CN201611124243.1A CN201611124243A CN106653472A CN 106653472 A CN106653472 A CN 106653472A CN 201611124243 A CN201611124243 A CN 201611124243A CN 106653472 A CN106653472 A CN 106653472A
- Authority
- CN
- China
- Prior art keywords
- operating mechanism
- mechanical emergency
- armature
- manual
- combined floodgate
- 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.)
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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
- H01H33/60—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
- H01H33/666—Operating arrangements
-
- 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
- H01H33/666—Operating arrangements
- H01H2033/6667—Details concerning lever type driving rod arrangements
Abstract
The invention relates to a mechanical emergency starting apparatus applied to star-delta voltage-reduction starting. The mechanical emergency starting apparatus comprises an insulating electric-insulating framework, a metal back sealing plate, two sets of electromagnetic control mechanisms, a manual operating mechanism and two sets of vacuum switching tube parts, wherein each set of electromagnetic control mechanism is provided with a switching-on holding pinch plate, a transmission connecting lever, a switching-on armature, a switching-on coil and a switching-off spring; a long pull rod passes through a through slot in the metal back sealing plate and is connected with a countersunk head hole in the corresponding switching-on armature; and a screw thread part at the other end of the long pull rod is movably connected with a U-shaped linking block on a linking rod of the manual operating mechanism through a positioning pin. The mechanical emergency starting apparatus can synchronously drive two alternating current vacuum contactors to realize mechanical emergency starting; and regulation of No. 11.0.12 clause of national standard GB 50974-2014 ''fire water supply and hydrant system technical specification'' implemented on 1st, Oct. 2014 is satisfied.
Description
Technical field
The present invention relates to a kind of mechanical emergency starter applied in star delta reduced-voltage starting, is through to machine
Tool part-structure recalculating and designing, it is adaptable in the equipment of star trigonometric expression reduced-voltage starting.
Background technology
Vacuum A. C. contactor its superior performance exists：Colliery, metallurgy, electric power, weaving, etc. various industries obtain reality
Extensive application in border, its superior performance：Without arc light, vacuum closing, dust-proof, explosion-proof, insulating coefficient, the coefficient of stability is remote
Exceed well over common A.C. contactor.AC vacuum contactor is by insulating every electric framework, metab, transmission crank arm, electromagnetic system
The composition such as system and vacuum switch, when solenoid passes through nominal control volatge, armature drives connecting lever to rotate, and makes in vacuum switch
Main contact is connected, and after solenoid power-off, due to tripping spring effect, makes main contact disjunction.Vacuum A. C. contactor is applied to：
Exchange 50Hz, rated voltage：Below 1140V, the feeding network of rated current 63A to 800A, control voltage：Below AC220V is supplied
It is remote to connect and disjunction circuit, and used by frequent starting and stopping ac motor.But, whether vacuum communication contact
At the scene during use, often occurring that control loop breaks down cannot drive contactor for device or common A.C. contactor
Coil or coil failure itself cannot normally close a floodgate, such as fire protection sector rescue and relief work needs to force operation of closing a floodgate；Otherwise, will
Cause great property loss or even bring the serious consequence for threatening life safe.So the country that on October 1st, 2014 implements
Standard：BG 50974-2014《Fire water-supply and hydrant system technical specification》Strong article of regulation of 11.0.12：Fire pump control
Cabinet processed should arrange mechanical emergency and open pumping function.The interpretation of section is：As long as power supply is normal, no matter how control circuit can force
Start fire water supply equipment.
On 02 24th, 2016, Chinese invention patent application publication No. CN105355505A disclosed what is proposed by our company
It is a kind of can mechanical emergency action vacuum A. C. contactor；By shrouding, electromagnetic operating mechanism, the hand after electric framework, metal that insulate
Pneumatic operating mechanism and vacuum switch tube part are constituted, and have combined floodgate to keep buckle, transmission crank arm, rank of closing a floodgate on electromagnetic operating mechanism
Iron, closing coil and tripping spring；Keep to the side position, to be provided with counter sink combined floodgate armature is longitudinally central, with the countersunk head hole site
Also there is a through hole after the metal for facing on shrouding；Through the through hole on shrouding after metal, long draw caps portion to one long draw
The counter sink divided on connection combined floodgate armature, the threaded section of long draw is connected with " L " shape pull hook of manual-operating mechanism gangbar.
Although the technical scheme can when secondary control loop breaks down, or vacuum switch itself solenoid damage when,
Being capable of manual-operated emergent startup fire-fighting pump-feeding and fire hydrant.But the setting of " L " shape pull hook, installation difficulty is easily deformed hair fastener.
Particularly " L " shape pull hook uniformity is poor, and the star triangle power frequency reduced-voltage starting conventional for current driving force motor equipment can be produced
Hair tonic is trembled；Conventional star triangle power frequency reduced-voltage starting be use most commonly used, a kind of mode that stability is best；Due to star
Triangle start needs to draw six roots of sensation power line on motor：U1, V1, W1, U2, V2, W2 A.C. contactor composition is opened from star
A process of triangle operation is moved, so two AC vacuums of forcibly action are had to when mechanical emergency starts connecing
Tentaculum, makes six roots of sensation power line direct-electrifying just run can terminal forced motor；It is badly in need of a kind of good mechanical emergency of uniformity to open
Dynamic device.
The content of the invention
It is an object of the invention to provide a kind of mechanical emergency starter applied in star delta reduced-voltage starting, Ke Yitong
Step drives two AC vacuum contactors, and its armature part and manual-operating mechanism inlet wire are improved, and realizes that mechanical emergency starts.
When under normal circumstances two AC vacuum contactor isolated operations constitute star-delta reduced-voltage starting；When control loop failure cannot
During normal operation, and achievable mechanical emergency startup function；It is exactly control loop or contactor sheet in last critical moment
Body pull-in winding failure cannot start and now main power source is intact, and by mechanical emergency starter adhesive two can be forced
AC vacuum contactor directly initiates terminal motor, and this is undoubtedly in the pattern based on conventional control circuit, substantially increases
The reliability of system, while solving the conforming technical problem of mechanical emergency starter.
The purpose of the present invention is achieved through the following technical solutions：
A kind of mechanical emergency starter applied in star delta reduced-voltage starting, by insulation after electric framework, metal shrouding, two
Set Electromagnetic Control mechanism, manual-operating mechanism and two sets of vacuum switch tube part compositions, often covering in electromagnetic control structure has combined floodgate
Keep buckle, transmission crank arm, combined floodgate armature, closing coil and tripping spring；Wherein, the flex point of transmission crank arm is arranged on to close a floodgate and turns
On axle, an arm of transmission crank arm is combined floodgate armature, and press tripping spring at arm end, and another the dynamic of arm connection vacuum switch duct member touches
Head；Keep to the side position, to be provided with counter sink combined floodgate armature is longitudinally central, shrouding position after the metal corresponding with the countersunk head hole site
Putting phase should have a groove；One long draw closes a floodgate through the groove on shrouding after correspondence metal, the cap portion connection that adds of long draw
Counter sink on armature, the silking part of long draw another end is corresponding with manual-operating mechanism gangbar " U " by alignment pin
Shape linkage block is flexibly connected；The deferent segment of the manual-operating mechanism gangbar is square bar, and two ends are in round bar shape；Described
" u "-shaped linkage block has two pieces, and every piece of bottom correspondence is welded in the plane of manual-operating mechanism gangbar square bar, top both sides
Center difference expense hole, two pin-and-holes are coaxial just right for small one and large one；Described alignment pin is in big small cylinder concentric sets
Shape is closed, the big pin-and-hole of " u "-shaped linkage block is injected at its big cylindrical portion end, " u "-shaped linkage block is injected at small cylinder part end
Little pin-and-hole；There are a transverse holes in the middle part of big cylindrical portion, the silking for making one of above-mentioned long draw partially passes through this
Transverse holes, and have two adjusting nuts to lock.
Described manual-operating mechanism closes soon/fast separation structure using spring energy-storage：Manual-operating mechanism be close a floodgate/point
Automatic-drawing spring carries out instantaneous energy storage in lock action.
Its innovative point of the invention is：When there is control circuit and breaking down, Electromagnetic Control mechanism cannot feed motion；
Now, operator when manual-operating mechanism is pulled, gangbar is rotated, and the " u "-shaped linkage block in gangbar led by alignment pin
Drawing long draw drives combined floodgate armature, combined floodgate armature to overcome the reaction force of tripping spring to rotate counterclockwise along combined floodgate rotating shaft rapidly,
Transmission crank arm promoted and moved on vacuum switch tube moving contact, is in close contact with static contact, makes vacuum tube in closing position, mandatory
Two AC vacuum contactor contact adhesives, sleeve mechanism are maintained at into "on" position, making process terminates.
The present invention and prior art contrast：
1. electromagnetism combined floodgate/separating brake can be realized with mechanical combined floodgate/separating brake；It is good that mechanical emergency starts uniformity；
2. using conjunction/wink in energy-storage type wink separation structure, the joystick can only be moved the manual-operating mechanism of the present invention toward a direction
Dynamic-from open position to final run location；If handle travel is not also to before "on" position, now operator's release lever,
The handle just automatically returns to open position.Meet the standard GB/T 50974-2014 of the enforcement of on October 1st, 2014《Disappear
Anti- feedwater and hydrant system technical specification》Strong article of regulation of 11.0.12；
3. machinery close/point the main contact of two AC vacuum contactors and auxiliary contact adhesive are driven by internal gangbar simultaneously
With disjunction, after stroke adjustment is intact, whole course of action can accomplish Complete Synchronization；
4. there is the present invention machine to close/electricity point function, and after machinery closes a floodgate operation, in order that operation is more convenient during separating brake,
It is in hgher efficiency, electromagnetic trip part is increased in manual-operating mechanism, the part is directly powered using AC220V；When needs stop
Operator presses the whole switching-on mechanism of stop botton and just directly separating brake can thread off during machine, if cannot perform for some reason,
Can hand-operated forced separating brake；The electromagnetic trip part also acts as in the controls a protective effect, and detects load motor
When having the lethal conditions such as short circuit, electromagnetism unhook component actuation so that operator cannot force starting equipment；
5. present invention electricity is closed and closed better than machine；When the emergent handle of operator's operation machinery, the position stroke of the handle will arrive conjunction
After lock self-locking position, before contact will close a floodgate；If now the coil of AC vacuum contactor will be or intact
The preferential action of this critical point, which increases the synchronism of combined floodgate, because the magnetic attraction effect of solenoid is decreased
The output torque of operating mechanism, so that whole system is more stable, reliable；
6. applicable situation of the present invention：It is suitable for and GB new standard：GB 50974 - 2014《Fire water-supply and hydrant system skill
Art specification》Strong article of 11.0.12：Firefighting Pump Control cabinet should arrange mechanical emergency and open pump installation（In the case of power supply is normal
The manual starting pump motor by force of energy）.When secondary control loop breaks down, or vacuum switch electromagnetism adhesive line itself
When circle is damaged, fire-fighting pump-feeding and fire hydrant can be started with manual-operated emergent.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the combined floodgate armature schematic diagram in Fig. 1.
Fig. 3 is shrouding schematic diagram after the metal in Fig. 1.
Fig. 4 is the long draw schematic diagram in Fig. 1.
Fig. 5 is the schematic diagram of gangbar.
Fig. 6 is the schematic diagram of alignment pin.
Fig. 7 is the " u "-shaped linkage block schematic diagram in Fig. 1.
In figure：1 insulation is every electric framework；Shrouding after 2 metals；3 vacuum switch duct members；4 transmission crank arms；5 combined floodgate armature；6
Closing coil；7 tripping springs；8 combined floodgate rotating shafts；9 adjusting nuts；10 long draws；11 " u "-shaped linkage blocks；12 manual-operating mechanisms
Gangbar；13 alignment pins；14 long draws plus cap portion；15 counter sinks；16 pin-and-holes；17 grooves.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described with embodiment.
A kind of mechanical emergency starter applied in star delta reduced-voltage starting, is sealed by insulation after electric framework 1, metal
Plate 2, Liang Tao Electromagnetic Controls mechanism, manual-operating mechanism and two sets of vacuum switch duct members 3 are constituted, and are often covered in electromagnetic control structure
There is combined floodgate to keep buckle, transmission crank arm 4, combined floodgate armature 5, closing coil 6 and tripping spring 7；Wherein, the flex point of transmission crank arm 4
In combined floodgate rotating shaft 8, an arm of transmission crank arm 4 is combined floodgate armature 5, and press tripping spring 7 at arm end, and another arm connects vacuum
The moving contact of switch duct member 3；In the longitudinally central position of combined floodgate armature 5, horizontal is top（Or keep to the side）Position, is provided with countersunk head
Hole 15；It is directly φ 6mm, hole countersunk head depth 3mm inside-out that the counter sink 15 crosses inside-out through hole；Diameter phi 12mm；With
Corresponding longitudinally central position on the position of shrouding 2 after the metal that the position of counter sink 15 faces, horizontal upper position also has
One groove 17, the two ends of groove 17 are the circular arc of φ 6mm, overall length is 18mm；One long draw 10 is through on shrouding 2 after correspondence metal
Groove 17, a diameter of φ 5mm of long draw 10, length is 235mm；The cap portion 14 that adds of long draw connects on combined floodgate armature 5
Counter sink 15, long draw 10 caps segment thickness for 2.8mm, and a diameter of φ 11mm, the tapping of other end silking part is long
45mm；The silking part of the another end of long draw 10 is by the " u "-shaped connection corresponding with manual-operating mechanism gangbar 12 of alignment pin 13
Motion block 11 is flexibly connected；The deferent segment of the manual-operating mechanism gangbar 12 is square bar, and two ends are in round bar shape, and bar 12 is grown
300mm width 16mm；Described " u "-shaped linkage block 11 has two pieces, and every piece of bottom correspondence is welded in manual-operating mechanism gangbar 12
In the plane of square bar, coaxial pin-and-hole 16 is opened respectively in the center on top both sides, and pin-and-hole 16 is small one and large one；Wherein on one side
Little pin-and-hole is φ 6mm, and the big pin-and-hole in another side is φ 10mm；" u "-shaped linkage block 11 adopts 4mm iron plate punch formings, cutting width
It is highly 60mm for 30mm；Described alignment pin 13 is combined concentrically shape in big small cylinder, and alignment pin 13 adopts the circle of φ 10mm
Steel, cuts long 40mm；One end car circle φ 5.8mm, long 9mm；Inject the big pin of " u "-shaped linkage block 11 in its big cylindrical portion end
Inject the little pin-and-hole of " u "-shaped linkage block 11 in hole, small cylinder part end；Also have in the middle part of big cylindrical portion one horizontal
Hole, transverse holes φ 6mm, the silking for making one of above-mentioned long draw 10 partially passes through the transverse holes, and have two adjusting nuts 9 to lock or
And the calibration locking of cap screw.
Described manual-operating mechanism closes soon/fast separation structure using spring energy-storage：Manual-operating mechanism be close a floodgate/point
Automatic-drawing spring carries out instantaneous energy storage in lock action.
Described each " u "-shaped linkage block 11 is welded on the position of manual-operating mechanism gangbar 12, opens with vacuum is handed over respectively
5 counter sink of combined floodgate armature, 15 positions closed on duct member 3 are corresponding, should ensure that long draw 10 is parallel placed in the middle.
Assemble method：By long draw 10 through shrouding 2 after the combined floodgate armature 5 and metal of vacuum contactor；And fixation is installed
Good vacuum contactor and manual-operating mechanism；Gangbar 12 of the longitudinally mounted position at the center of long draw 10 than manual-operating mechanism
Plan-position want high 46mm, the correspondence of " u "-shaped linkage block 11 long draw 10 center is welded in the plane of gangbar 12,
By " alignment pin " 13 straight cutting in the circular hole of " u "-shaped linkage block 11, by the straight cutting of long draw 10 in the circular hole of alignment pin 13, it is used in combination
Two φ 6mm and the unnecessary threaded section of cap screw calibration locking.
The mechanism part function description：With manual conjunction/point function, mechanism's separating brake has two ways：One electricity point, i.e., in machine
Apply AC220V voltages in structure on switching winding to be just capable of achieving；Second-hand point, that is, the joystick of operating mechanism is pulled to sub-gate position
Put and be just capable of achieving separating brake.
Jing actual tests and many experiments, the separating brake/combined floodgate stroke of manual-operating mechanism is closed more than two vacuum contactors
The separating brake of lock armature 5/combined floodgate stroke；Separating brake/the closing moment of manual-operating mechanism is more than two two vacuum contactors most
High closing moment；And test six vacuum switch duct members 3 can reliable synchronization action separating brake/combined floodgate therewith.Due to manually operated
Mechanism's linkage structure is simple and reliable, and mixes up admittedly after set screw, it is possible to achieve two vacuum contactor synchronization actions.Significantly
Increased the coefficient of stability in actual applications.
Claims (2)
1. a kind of mechanical emergency starter applied in star delta reduced-voltage starting, by insulation every electric framework（1）, seal after metal
Plate（2）, Liang Tao Electromagnetic Controls mechanism, manual-operating mechanism and two sets of vacuum switch duct members（3）Composition, often covers Electromagnetic Control knot
There is combined floodgate to keep buckle, transmission crank arm on structure（4）, combined floodgate armature（5）, closing coil（6）And tripping spring（7）；Wherein, it is driven
Connecting lever（4）Flex point be arranged on combined floodgate rotating shaft 8 on, transmission crank arm（4）An arm be combined floodgate armature（5）, separating brake bullet is pressed at arm end
Spring（7）, another arm connection vacuum switch duct member（3）Moving contact；Its characteristic is：In combined floodgate armature（5）It is longitudinally central
Keep to the side position, to be provided with counter sink（15）, with the counter sink（15）Shrouding after the corresponding metal in position（2）Should mutually have one on position
Groove（17）；One long draw（10）The shrouding through after correspondence metal（2）On groove（17）, long draw plus cap portion（14）Even
Engagement lock armature（5）On counter sink（15）, long draw（10）The silking part of another end passes through alignment pin（13）With it is manually operated
Mechanism's gangbar（12）Upper corresponding " u "-shaped linkage block（11）It is flexibly connected；The manual-operating mechanism gangbar（12）It is defeated
It is square bar to go out section, and two ends are in round bar shape；Described " u "-shaped linkage block（11）There are two pieces, every piece of bottom correspondence is welded in manually
Operating mechanism gangbar（12）In the plane of square bar, top both sides difference expense hole（16）, two pin-and-holes are that small one and large one is coaxial
It is just right；Described alignment pin（13）Shape is combined concentrically in big small cylinder, " u "-shaped linkage block is injected at its big cylindrical portion end
（11）Big pin-and-hole, small cylinder part end inject " u "-shaped linkage block（11）Little pin-and-hole；In the pars intermedia of big cylindrical portion
There is a transverse holes position, makes one of above-mentioned long draw（10）Silking partially pass through the transverse holes, and have two adjusting nuts（9）Lock
Tightly.
2. a kind of mechanical emergency starter applied in star delta reduced-voltage starting according to claim 1, its characteristic
Also reside in：Described manual-operating mechanism closes soon/fast separation structure using spring energy-storage：Manual-operating mechanism be close a floodgate/point
Automatic-drawing spring carries out instantaneous energy storage in lock action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611124243.1A CN106653472A (en) | 2016-12-08 | 2016-12-08 | Mechanical emergency starting apparatus applied to star-delta voltage-reduction starting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611124243.1A CN106653472A (en) | 2016-12-08 | 2016-12-08 | Mechanical emergency starting apparatus applied to star-delta voltage-reduction starting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106653472A true CN106653472A (en) | 2017-05-10 |
Family
ID=58818876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611124243.1A Pending CN106653472A (en) | 2016-12-08 | 2016-12-08 | Mechanical emergency starting apparatus applied to star-delta voltage-reduction starting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106653472A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245618A (en) * | 2018-11-20 | 2019-01-18 | 北京明日电器设备有限责任公司 | A kind of mechanical star-triangle start device of motor |
| CN111223716A (en) * | 2020-01-10 | 2020-06-02 | 安徽正光电气自动化科技有限公司 | Integrated manual and electric star-delta starting mechanism |
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| CN105355505A (en) * | 2015-12-03 | 2016-02-24 | 郴州市东塘电气设备有限公司 | Vacuum alternating-current contactor for mechanical emergency |
| CN205069539U (en) * | 2015-10-15 | 2016-03-02 | 新余学院 | Communication circuit breaker of good reliability |
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| CN201975325U (en) * | 2011-01-07 | 2011-09-14 | 无锡市锡山湖光电器有限公司 | Energy-storage manual closing restoration device of vacuum circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109245618A (en) * | 2018-11-20 | 2019-01-18 | 北京明日电器设备有限责任公司 | A kind of mechanical star-triangle start device of motor |
| CN111223716A (en) * | 2020-01-10 | 2020-06-02 | 安徽正光电气自动化科技有限公司 | Integrated manual and electric star-delta starting mechanism |
| CN111223716B (en) * | 2020-01-10 | 2021-10-22 | 安徽正光电气自动化科技有限公司 | Integrated manual and electric star-delta starting mechanism |
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Application publication date: 20170510 |
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