CN2590276Y - Low power consumption intelligent negative booster starter - Google Patents
Low power consumption intelligent negative booster starter Download PDFInfo
- Publication number
- CN2590276Y CN2590276Y CN 02287605 CN02287605U CN2590276Y CN 2590276 Y CN2590276 Y CN 2590276Y CN 02287605 CN02287605 CN 02287605 CN 02287605 U CN02287605 U CN 02287605U CN 2590276 Y CN2590276 Y CN 2590276Y
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- CN
- China
- Prior art keywords
- contact
- switch
- connecting rod
- contacts
- tripping
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Abstract
The utility model relates to a micropower intelligent negative depressurizing motor starter, more specially a triangular conversion starter for a squirrel-cage motor. The utility model comprises a triangular conversion actuating mechanism and a delaying conversion control circuit. The utility model is characterized in that the triangular conversion actuating mechanism is provided with six binding posts U1, V1, W1, U2, V2, W2 which are respectively and correspondingly connected with an armature of the motor, a moving contact group with three contacts, a static contact group with three contacts, a star-shaped contact group with three contacts, an electric operating mechanism, a tripping mechanism, an interlock mechanism and a delaying control circuit. The contact group tripping mechanism and the interlock mechanism can adopt mechanisms similar in an automatic air switch; an electric traction mechanism adopts a miniature motor and a worm and gear; thus, the whole structure of the device is compact and reliable, and the operating power consumption is little.
Description
Technical field: the utility model relates to a kind of little power consumption intelligent step-down motor starter, interconnected cage motor specifically, and star-triangle switches starting device.
Background technology: the interconnected cage motor of present operation, small-power can adopt the direct-on-line starting method to carry out across-the-line starting, but for high-power, the above interconnected cage motor of 7.5KW particularly, during because of its across-the-line starting, starting current is very big, impact to electrical network is bigger, and under electrodynamic effect, easily cause short circuit in winding and burn motor, thereby all will adopt the mode of reduced voltage starting usually.Existing reduced voltage starting mode has resistance or reactance, auto-transformer type and star-trigonometric expression starting, star-trigonometric expression is little owing to having starting current, advantages such as cost is relatively low and being widely used, but it is big also to exist the control cubicle volume, the defective that the electric component contact is many, power consumption is big, maintenance load is big.
Summary of the invention: the purpose of this utility model is to provide a kind of more compact structure, little, the more reliable star delta starter of work of power consumption for overcoming the deficiencies in the prior art.
The technical solution that the utility model adopted is as follows:
Little power consumption intelligent step-down motor starter of the present utility model comprises star-triangle conversion actuator and time-delay conversion control circuit, it is characterized in that: described star-triangle conversion actuator is provided with six binding post U that are used for corresponding with armature respectively connection
1, V
1, W
1, U
2, V
2, W
2, have moving contact group, fixed contact group and star sets of contacts and motor-operating mechanism, tripping mechanism and the latching device of three contacts, tripping mechanism includes rotating shaft and energy-storage travelling wave tube, three contacts of fixed contact group respectively with binding post U
1, V
1, W
1Electrical communication, three contacts of moving contact group respectively with binding post U
2, V
2, W
2Electrical communication, electrical communication between three contacts of star sets of contacts are mutual; Described moving contact group is fixed on respectively on separately the contact supporting, this contact supporting is fixed in the rotating shaft, described motor-operating mechanism traction tripping mechanism makes rotating shaft have two steady operation positions, promptly close a floodgate and separating brake, and between these two positions, change, during "on" position, moving contact group and fixed contact group closure, and with binding post W
2To U
1, U
2To V
1, V
2To W
1Corresponding mode closure; During gate-dividing state, moving contact group and star sets of contacts closure, under the "on" position, snap close is threaded off, and tripping mechanism is converted to separating brake; Delay control circuit control motor-operating mechanism is from starting beginning to the time of carrying out closing operation.
Little power consumption intelligent step-down motor starter of such scheme, its sets of contacts tripping mechanism and latching device can adopt the mechanism in the similar automatic air-break switch and be arranged in the same pedestal, electric traction mechanism adopts micromachine and worm and gear, therefore whole apparatus structure is very compact reliable, and the operation power consumption is very little.
Below in conjunction with accompanying drawing the utility model is further described, and provides embodiment simultaneously.
Description of drawings:
Accompanying drawing 1: the utility model embodiment changes actuator's structural representation;
Accompanying drawing 2: the present embodiment motor-operating mechanism is arranged schematic diagram;
Accompanying drawing 3: the present embodiment tripping mechanism is arranged schematic diagram;
Accompanying drawing 4: present embodiment delay control circuit electrical schematic diagram;
Accompanying drawing 5: present embodiment motor-operating mechanism electrical schematic diagram
Embodiment: as Fig. 1, Fig. 2, shown in Figure 3, little power consumption intelligent step-down motor starter has one and the similar pedestal 1 of automatic air-break switch, binding post U
1, V
1, W
1, U
2, V
2, W
2Being divided into two groups is fixed on respectively near the pedestal inner chamber two ends, front and back, rotating shaft 2 cross sections are square, two ends are journaled on the pedestal 1 sidewall centre position, three moving contact racks 5 are formed by the punching of copper sheet material, rack rod 18 two every pair, be clipped in the both sides after moving contact rack 5 middle parts are leaned on, rack rod 18 front ends and moving contact rack 5 are hinged, the rear portion is provided with the square open-work suitable with rotating shaft 2, and be set in the rotating shaft 2 and constitute interlock, three groups of moving contact racks 5 equidistantly are provided with symmetrically, and moving contact rack 5 front ends both sides up and down are welded with the sets of contacts that silver contact is formed, binding post U
1, V
1, W
1Be converted into " " shape by copper sheet and extend to the moving contact below, be welded with silver contact on the corresponding moving contact position and form fixed contact group 3; For making tripping mechanism more firmly solid, connecting rod II15 adopts two identical sheet metals, end clips is in the both sides of connecting rod I12 and by pin hinge, equally, connecting rod III16 also adopts two to abut on the connecting rod II15 from two outsides, and the lower end abuts in two outsides of rack rod, two ends all with pin respectively hinge on connecting rod II15 and rack rod, make connecting rod I12, connecting rod II15, connecting rod III16 hinges successively, connecting rod I (12) forward swing limit position should be no more than vertically; Fixed support 17 also is made up of two identical " " shape flat members, be fixed on the outside, both sides of connecting rod III16, the end of connecting rod I12 is fixed on the bearing pin that is across between two fixed supports 17, operation support 11 is bent into " " shape and is arranged on connecting rod and fixed support 17 tops, and two leg lower end locating hinges are on fixed support 17; Latching device comprises draw bar 20, jete button 27, grip tab 22 and draw bar support 23, draw bar 20 is arranged on the rear side of fixed support 17, two ends are journaled on the draw bar support 23, draw bar 20 is provided with the jete button 27 of projection, connecting rod I12 is provided with the big tripping 24 that extends back, grip tab 22 is arranged between big tripping 24 and the jete button 27 and by bearing pin and is journaled on the fixed support 17, and operation support 11 hangs up snap close when a side oscillation puts in place backward; Hang up and be flapped toward the front side behind the snap close and then drive contact holder 5 and close a floodgate, provide contact force by extension spring 13; For the star sets of contacts is installed, starter is provided with star contact holder 29, star contact holder 29 is a rectangle, the surface is provided with the groove parallel with moving contact group 4, contact is fixed in the groove, the length of described star contact holder 29 equates with pedestal 1 width, and across above corresponding with moving contact group 4, two ends are screwed on plane on pedestal 1 sidewall; The stacked shape in pedestal 1 top is identical, the shaped as frame seat of honour 7 of last lower open mouth, micromachine 10 in the motor-operating mechanism and worm gear 9 worm screws 21 are installed in the seat of honour 7, worm gear 9 and worm screw 21 all are horizontally disposed with, worm screw 21 is by train of reduction gears 8 and 10 interlocks of driving micromachine, the setting height(from bottom) of worm gear 9 should flush with operation support 11 as far as possible, operator link 26 two ends difference hinge is on worm gear 9 and operation support 11, delay control circuit provides power supply by transformer A and B after full-bridge rectification, relay ZJ
1Actuating coil directly be connected across between the two poles time-delay relay SJ
1Actuating coil and relay ZJ
1Normally opened contact ZJ
1-1Series arm, controllable silicon GT and relay ZJ
2Actuating coil series arm and relay ZJ
2Normally closed interlock ZJ
2-1With normally open contact ZJ
2-2Series arm all is connected across on the two poles, normally open contact ZJ
2-2With normally closed interlock ZJ
2-1Tie point through relay ZJ
1Normally open contact ZJ
1-2Be connected in two power input lines of micromachine 10, another power input line is connected to change over switch K
3Common point, normally open contact ZJ
2-3Be serially connected in the release electromagnet electric power loop change over switch K
3Contact K
3-1With K switch
2Contact K
2-1Connect contact K
3-2Through time-delay relay timing closing contact SJ
1-1Receive K switch
4K
4-1On the contact, another contact K
4-2Unsettled, K switch
4Common point be connected K switch with power cathode
2Common point be connected K switch with positive source
2Another contact K
2-2Be connected K switch with the trigger electrode T of controllable silicon GT
2And K
4Be fixed on worm gear 9 edges belows certain corner of being separated by, described corner should satisfy when worm gear 9 turns over the angle of this corner, and operator link 26 pull operation supports 11 are to "on" position, corresponding K switch on the worm gear 9
2And K
4Between fixed-site be provided with a driving lever, worm gear 9 rotates that the toggle switch button carries out contact conversion, K switch when driving driving levers to the corresponding position of the switch
3Conversion and release electromagnet TB movable core interlock.
The operation principle of this starter is as follows: referring to Fig. 4, shown in Figure 5, before the connection working power, starter is in star connection, and electromagnet does not have operating voltage, K switch
3Common point and contact K
3-1Closure, K switch
2Common point and contact K
2-1Closure is pressed start button QA, and auxiliary relay QC gets electric, contact QC adhesive, B level of transformer A, transformer output DC source after rectification provides DC power supply for control circuit and micromachine 10, this moment relay ZJ
1, time-delay relay SJ building ring successively add operating voltage, contact ZJ
1-1, and ZJ
1-2Adhesive, B termination power negative pole, micromachine 10 entrys into service drive worm gear 9 rotation promotion counterclockwise operation support 11 back pendulum and hang up snap close, and driving lever makes K switch simultaneously
2Common point and contact K
2-2Closure, micromachine 10 deenergizations, and stop to trigger controllable silicon GT conducting, relay ZJ
2Actuating coil gets electric, contact ZJ
2-1, ZJ2-2, ZJ
2-3Action, micromachine 10B is connected to positive source, and the adhesive of release electromagnet TB energized drives K switch
3Common point is converted to and contact K
3-2Be communicated with, to time-delay end, time-delay relay SJ
1Timing closing contact SJ
1-1Closure, micromachine 10 reverse rotations drive operation support 11 forward swings through worm gear 9 worm screws 21 and operator link 26, make moving contact combination lock, and the driving lever on the worm gear 9 is with K switch simultaneously
4Common point be allocated to and K
4-2The contact is communicated with, and the power supply that disconnects micromachine 10 shuts down motor and finishes star-triangle conversion startup.Adjust time-delay relay SJ
1Setting-up time, be adjusting star-triangle change-over time.
For the function that makes starter is more complete, also be provided with open-phase detection circuit PA and PB in the starter, open-phase detection circuit output contact PA and PB and relay ZJ
3Actuating coil series connection back and relay ZJ
2The actuating coil parallel connection, normally open contact ZJ
3-3Be serially connected in the electric power loop of release electromagnet, when open-phase detection circuit detects the phase failure, open-phase detection circuit output contact closure, relay ZJ
3Action, contact ZJ
3-1Disconnect, the release electromagnet dead electricity triggers grip tab 22 and threads off, and cuts off general supply.
Claims (3)
1, a kind of little power consumption intelligent step-down motor starter comprises star-triangle conversion actuator and time-delay conversion control circuit, it is characterized in that: described star-triangle conversion actuator is provided with six binding post (U that are used for corresponding with armature respectively connection
1, V
1, W
1, U
2, V
2, W
2), have moving contact group (4), fixed contact group (3) and star sets of contacts (6) and motor-operating mechanism, tripping mechanism and the latching device of three contacts, tripping mechanism includes rotating shaft (2) and energy-storage travelling wave tube, three contacts of fixed contact group (3) respectively with binding post (U
1, V
1, W
1) electrical communication, three contacts of moving contact group (4) respectively with binding post (U
2, V
2, W
2) electrical communication, electrical communication between three contacts of star sets of contacts (6) are mutual; Described moving contact group (4) is separately fixed on separately the contact supporting (5), and this contact supporting (5) is fixed in the rotating shaft (2); Described motor-operating mechanism traction tripping mechanism makes rotating shaft (2) have two steady operation positions, and promptly close a floodgate and separating brake, and between these two positions, change, during "on" position, moving contact group (4) and fixed contact group (3) closure, and with binding post (W
2) to (U
1), (U
2) to (V
1), (V
2) to (W
1) corresponding mode closure; During gate-dividing state, moving contact group (4) and star sets of contacts (6) closure, under the "on" position, latching device is threaded off, and tripping mechanism is converted to separating brake; Delay control circuit control motor-operating mechanism is from starting beginning to the time of carrying out closing operation.
2, little power consumption intelligent step-down motor starter according to claim 1, it is characterized in that: described tripping mechanism comprises connecting rod I (12), connecting rod II (15), the connecting rod III (16) of hinges successively, the other end locating hinge of connecting rod I (12) is on the fixed support that is arranged on a side (17), the other end hinge of connecting rod III (16) is on contact holder (5), and connecting rod I (12) forward swing limit position should be no more than vertically; The top of connecting rod is provided with operation support (11), the leg of operation support (11) is gone up and can be around the swing within the specific limits of pin connecting shaft with pin-connection in fixed support (17), connects the hinge axis of connecting rod II (15) and connecting rod III (16) and operate between the support (11) to be provided with extension spring (13); Described latching device comprises draw bar (20), little tripping (27), grip tab (22) and draw bar support (23), draw bar (20) is arranged on the rear side of fixed support (17), two ends are journaled on the draw bar support (23), draw bar (20) is provided with the little tripping (27) of projection, connecting rod I (12) is provided with the big tripping (24) that extends back, grip tab (22) is arranged between big tripping (24) and the little tripping (27) and by bearing pin and is journaled on the fixed support (17), and operation support (11) hangs up snap close when a side oscillation puts in place backward; Hang up and be flapped toward the front side behind the snap close and then drive contact holder (5) and close a floodgate, provide contact force by extension spring (13); Described motor-operating mechanism is formed by a micromachine (10) and by worm gear (9) and worm screw (21) that described micromachine (10) drives, is provided with operator link (26) between worm gear (9) and the operation support (11) and constitutes interlock; Delay control circuit by transformer (A) and (B) provides power supply, relay (ZJ after full-bridge rectification
1) actuating coil directly be connected across between the two poles time-delay relay (SJ
1) actuating coil and relay (ZJ
1) normally opened contact (ZJ
1-1) series arm, controllable silicon (GT) and relay (ZJ
2) actuating coil series arm and relay (ZJ
2) normally closed interlock (ZJ
2-1) and normally open contact (ZJ
2-2) series arm all is connected across on the two poles normally open contact (ZJ
2-2) and normally closed interlock (ZJ
2-1) tie point through relay (ZJ
1) normally open contact (ZJ
1-2) being connected in two power input lines of micromachine (10), another power input line is connected to change over switch (K
3) common point, normally open contact (ZJ
2-3) be serially connected in release electromagnet (TB) electric power loop change over switch (K
3) contact (K
3-1) and switch (K
2) contact (K
2-1) connect contact (K
3-2) through time-delay relay timing closing contact (SJ
1-1) receive switch (K
4) (K
4-1) on the contact, another contact (K
4-2) unsettled, switch (K
4) common point be connected switch (K with power cathode
2) common point be connected switch (K with positive source
2) another contact (K
2-2) be connected switch (K with the trigger electrode T of controllable silicon (GT)
2) and (K
4) being fixed on worm gear (9) edge below certain corner of being separated by, described corner should satisfy when worm gear (9) turns over the angle of this corner, and operator link (26) pull operation support (11) is to "on" position, and worm gear (9) is gone up inductive switch (K
2) and (K
4) between fixed-site be provided with a driving lever, the toggle switch button carried out contact conversion, switch (K when worm gear (9) rotate to drive driving lever to the corresponding position of the switch
3) conversion and release electromagnet (TB) movable core interlock.
3, a kind of little power consumption intelligent step-down motor starter according to claim 1 and 2, it is characterized in that: described tripping mechanism also is provided with open phase protection,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02287605 CN2590276Y (en) | 2002-12-16 | 2002-12-16 | Low power consumption intelligent negative booster starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02287605 CN2590276Y (en) | 2002-12-16 | 2002-12-16 | Low power consumption intelligent negative booster starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2590276Y true CN2590276Y (en) | 2003-12-03 |
Family
ID=33747827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02287605 Expired - Fee Related CN2590276Y (en) | 2002-12-16 | 2002-12-16 | Low power consumption intelligent negative booster starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2590276Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978406A (en) * | 2016-05-27 | 2016-09-28 | 天津加美特电气设备有限公司 | Star-angle conversion starter for three-phase alternating-current motor |
| CN116799965A (en) * | 2023-08-24 | 2023-09-22 | 西安前进电器实业有限公司 | Intelligent control method and system for power consumption of vacuum circuit breaker |
-
2002
- 2002-12-16 CN CN 02287605 patent/CN2590276Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978406A (en) * | 2016-05-27 | 2016-09-28 | 天津加美特电气设备有限公司 | Star-angle conversion starter for three-phase alternating-current motor |
| CN105978406B (en) * | 2016-05-27 | 2018-06-01 | 天津加美特电气设备有限公司 | Three phase alternating current motor star angle switch starter |
| CN116799965A (en) * | 2023-08-24 | 2023-09-22 | 西安前进电器实业有限公司 | Intelligent control method and system for power consumption of vacuum circuit breaker |
| CN116799965B (en) * | 2023-08-24 | 2023-11-21 | 西安前进电器实业有限公司 | Intelligent control method and system for power consumption of vacuum circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |