CN103326630B - A kind of electric reactor type soft starter for iron core valve device - Google Patents
A kind of electric reactor type soft starter for iron core valve device Download PDFInfo
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- CN103326630B CN103326630B CN201310298766.8A CN201310298766A CN103326630B CN 103326630 B CN103326630 B CN 103326630B CN 201310298766 A CN201310298766 A CN 201310298766A CN 103326630 B CN103326630 B CN 103326630B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000007858 starting material Substances 0.000 title claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 59
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 239000003999 initiator Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000005291 magnetic effect Effects 0.000 description 8
- 230000006698 induction Effects 0.000 description 7
- 230000004907 flux Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 230000000750 progressive effect Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
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- CBVWMGCJNPPAAR-HJWRWDBZSA-N (nz)-n-(5-methylheptan-3-ylidene)hydroxylamine Chemical compound CCC(C)C\C(CC)=N/O CBVWMGCJNPPAAR-HJWRWDBZSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The present invention relates to a kind of electric reactor type soft starter for iron core valve device, compared with prior art solve soft initiator and easily produce high order harmonic component, overload capacity is poor, defect that failure rate is high.The present invention includes iron core valve armature (5), reactance winding (3), main iron core (1), from iron core (2) be wrapped in from the short-circuited conducting sleeve winding (4) iron core (2), described reactance winding (3) is intertwined by main iron core (1) with from iron core (2), and described short-circuited conducting sleeve winding (4) is by forming coupling circuit from iron core (2) and iron core valve armature (5) with reactance winding (3).The present invention makes motor start-up characteristic soften, and has no waveform distortion and does not produce high order harmonic component, pollution-free to electrical network.
Description
Technical field
The present invention relates to Start Technology field, specifically a kind of electric reactor type soft starter for iron core valve device.
Background technology
In the power industry fields such as building, metallurgy, mine, motor device uses in a large number.When electric motor starting, inrush current is very large, when power of motor capacity is larger, can causes interference, even endanger the safe operation of electrical network to electrical network and other loads.In order to address this problem, mostly employ the method for soft start.And the Controlled saturable reactor soft start used at present or electronic type soft start, owing to generally adopting DC excitation or exchanging isolation self-excitation reactor, its performance element uses the contour power solid element of RSC, RS, its control circuit is complicated, easy generation high order harmonic component, overload capacity is poor, failure rate is high, there is certain pollution to electrical network.How to develop a kind ofly to have no waveform distortion, the soft initiator that do not produce high order harmonic component become the technical problem being badly in need of solving.
Summary of the invention
The object of the invention is easily to produce high order harmonic component, the defect that overload capacity is poor, failure rate is high to solve soft initiator in prior art, providing a kind of electric reactor type soft starter for iron core valve device to solve the problems referred to above.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of electric reactor type soft starter for iron core valve device, comprise iron core valve armature, reactance winding, main iron core, from iron core be wrapped in from the short-circuited conducting sleeve winding iron core, described reactance winding is intertwined by main iron core with from iron core, and described short-circuited conducting sleeve winding is by forming coupling circuit from iron core and iron core valve armature and reactance winding.
Also comprise stepping motor, guide assembly and be connected in the controller of reactance winding input, described controller is connected with stepping motor, and described iron core valve armature is flexibly connected with stepping motor by guide assembly.
Also comprise deceleration motor and circuit control switch group, described circuit control switch group and deceleration motors, described iron core valve armature is flexibly connected with deceleration motor by guide assembly.
Described guide assembly comprises front travel switch, rear travel switch and moving track, and described moving track is arranged on stepping motor, and described front travel switch and rear travel switch are arranged on the front-end and back-end of moving track respectively.
Described guide assembly comprises front travel switch, rear travel switch and moving track, and described moving track is arranged on deceleration motor, and described front travel switch and rear travel switch are arranged on the front-end and back-end of moving track respectively.
beneficial effect
A kind of electric reactor type soft starter for iron core valve device of the present invention, compared with prior art makes motor start-up characteristic soften, has no waveform distortion and do not produce high order harmonic component, pollution-free to electrical network.Improve the overload capacity of equipment, reliability is high.Owing to adopting ferromagnetic executive component pressure regulation, the convenient easy manufacture of selection, control circuit is simple, and current limliting regulates level and smooth, quick, without high power solid-state components, has the advantages such as volume is little, lightweight, low cost, overload capacity are strong.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of the first execution mode of the present invention
Fig. 3 is the structural representation of the second execution mode of the present invention
Fig. 4 is the structural representation of the second execution mode center line way control switch group of the present invention
Wherein, 1-main iron core, 2-rotate forward travel switch from travel switch after iron core, 3-reactance winding, 4-short-circuited conducting sleeve winding, 5-iron core valve armature, 6-controller, 7-stepping motor, 8-deceleration motor, 9-circuit control switch group, 31-input, 32-output, 71-moving track, 72-front travel switch, 73-, 91-control switch, 92-selector switch, 93-, 94-reverses travel switch, 95-relay, 96-main power source input port, 97-from output port of power source.
Embodiment
For making to have a better understanding and awareness architectural feature of the present invention and effect of reaching, coordinating detailed description in order to preferred embodiment and accompanying drawing, being described as follows:
As shown in Figure 1, a kind of electric reactor type soft starter for iron core valve device of the present invention, comprise iron core valve armature 5, reactance winding 3, main iron core 1, from iron core 2 be wrapped in from the short-circuited conducting sleeve winding 4 iron core 2.Described reactance winding 3 is intertwined by main iron core 1 with from iron core 2, main iron core 1, can mutually combine from iron core 2, and to coordinate, reactance winding 3 will both be common is wound around.Described short-circuited conducting sleeve winding 4 is by forming coupling circuit from iron core 2 and iron core valve armature 5 with reactance winding 3, so just, define the loop of reactance winding 3 and short-circuited conducting sleeve winding 4, now reactance value is minimum, according to the impedance transformation principle of the principle device 1:1 of ideal transformer, zero is approximated from the impedance of the short-circuited conducting sleeve winding 4 iron core 2 is very little, now from iron core 2 and main iron core 1, the common reactance winding 3 be wound around also approximates zero, can use as wire, thus ensure that the low-loss of reactance winding 3 normally runs.And when iron core valve armature 5 moves on main iron core 1, short-circuited conducting sleeve winding 4 has been abandoned in whole loop, remain reactance winding 3; now the impedance of reactance winding 3 is maximum; reach restriction inrush current when starting, thus play the effect of proterctive equipment and circuit, to realize the object of soft start.At the electric motor starting initial stage, by the characteristic that the impedance of the reactance winding 3 on main iron core 1 is maximum, current limliting is carried out to motor.In start-up course, moved toward from iron core 2 from main iron core 1 by iron core valve armature 5 again, also the impedance in loop has been driven to change from Zm to Z0, final iron core valve armature 5 departs from main iron core 1 completely, coupling circuit is formed with from iron core 2, the impedance of reactance winding is reduced to and is approximated zero, can use as wire, completes the startup of motor.
As the first embodiment of the present invention, as shown in Figure 2, also comprise stepping motor 7, guide assembly and be connected in the controller 6 of reactance winding 3 input 31, described controller 6 is connected with stepping motor 7, and described iron core valve armature 5 is flexibly connected with stepping motor 7 by guide assembly.Controller 6 is connected on input 31, for monitoring reactance winding 3 and control step motor 7.When motor put into operation, zero moment reactance value of current turns ON is maximum, maximum starting current can be limited in 1 ~ 2.5 times of rated current as required.The electric current detected along with the starting of motor declines, and controls iron core valve armature 5 and moves to corresponding position, reactance value is declined by controller 6, compensates the electric current declined, reaches constant current starting.Motor controls the maximum reactance value of iron core valve armature 5 involution to initial position by controller 6 after stopping, and in order to starting next time, completes a starting cycle.Stepping motor 7 is for controlling iron core valve armature 5 from main iron core 1 to from the movement between iron core 2.Iron core valve armature 5 carries out corresponding adjustment of displacement to resistance value under the driving of stepping motor 7.
The first embodiment of the present invention is when reality uses, and input line 31 is connected entering of transmission line respectively with output line 32 and goes out, and presets a starting current value needed.Iron core valve armature 5 is operated in the initial condition of main iron core 1.When after the electric motor starting that switches on power, reactance winding 3, by the starting current of setting, controls iron core valve armature 5 to from iron core 2 progressive motion by controller 6, thus reduces reactance value, maintain starting current constant.After iron core valve armature smoothly moves right to low order end, starting current is less than or equal to set point.Now iron core valve armature 5 departs from main iron core 1 completely, and closes from iron core 2 comprehensively.Now, short-circuited conducting sleeve winding 4 short circuit, at this moment inductance value is very little, and thus reactance is little, does not affect the operation of motor, be then equivalent to wire the same as delivered current.When reactance winding 3 passes to electric current, reactance winding 3 will produce self-induced magnetic flux, self-induced magnetic flux all by interlinkage to short-circuited conducting sleeve winding 4.When current variation on reactance winding 3, its self-induced magnetic flux also will change with electric current.According to law of magnetic induction, except producing except self induction voltage in reactance winding 3, also in short-circuited conducting sleeve winding 4, also induced voltage will be produced.According to ideal transformer model, ideal transformer be one can not the multiterminal element of energy storage, the instantaneous power identically vanishing that its absorbs.Ideal transformer, except voltage of transformation and electric current, can also be used to transforming impedance, short-circuited conducting sleeve winding 4 short circuit, then the terminal voltage of short-circuited conducting sleeve winding 4 is zero, and the input impedance of reactance winding 3 is also zero.
As the second execution mode of the present invention, as shown in Figure 3, also comprise deceleration motor 8 and circuit control switch group 9, described circuit control switch group 9 is connected with deceleration motor 8, and described iron core valve armature 5 is flexibly connected with deceleration motor 8 by guide assembly.Deceleration motor 8 is for controlling iron core valve armature 5 at main iron core 1 with from the movement between iron core 2.Circuit control switch group 9 controls deceleration motor 8, thus controls iron core valve armature 5 to from the level and smooth progressive motion of iron core 2, thus reduces reactance value, maintains the starting current value of starting setting.As shown in Figure 4, circuit control switch group controls deceleration motor 8, deceleration motor 8 can set according to the time that motor is required when reality starts, deceleration motor 8 just can carry out forward or reverse according to the time of regulation, to reach the object driving iron core valve armature 5.Main power source input port 96 and after connecting with the mains respectively from power input port 97, Closed control switch 91, relay 95 adhesive selector switch 92, now rotate forward travel switch 93 and be closure state with reversion travel switch 94, electric current is by deceleration motor 8 and relay 95, and now deceleration motor 8 is started working.
The second execution mode and the first execution mode similar on using, input line 31 is connected entering of transmission line respectively with output line 32 and goes out, the time required for soft starter for motor, presets the time running life of a starting current.Iron core valve armature 5 is operated in the initial condition of main iron core 1, when after the electric motor starting that switches on power, reactance winding 3 is by the starting current of setting, deceleration motor 8 is controlled by iron core valve armature 5 to from the level and smooth progressive motion of iron core 2 by circuit control switch group 9, thus reduction reactance value, maintain starting current and remain unchanged.When deceleration motor 8 runs the time limit arriving and specify, iron core valve armature smoothly moves right low order end, and now starting current will be less than or equal to set point.Now iron core valve armature 5 departs from main iron core 1 completely, and closes from iron core 2 comprehensively.Now, short-circuited conducting sleeve winding 4 short circuit, at this moment inductance value is very little, and thus reactance is little, does not affect the operation of motor, be then equivalent to wire the same as delivered current.When reactance winding 3 passes to electric current, reactance winding 3 will produce self-induced magnetic flux, the major part of self-induced magnetic flux by interlinkage to short-circuited conducting sleeve winding 4.When current variation on reactance winding 3, its self-induced magnetic flux also will change with electric current.According to law of magnetic induction, except producing except self induction voltage in reactance winding 3, also in short-circuited conducting sleeve winding 4, also induced voltage will be produced.According to ideal transformer model, ideal transformer be one can not the multiterminal element of energy storage, the instantaneous power identically vanishing that its absorbs.Ideal transformer, except voltage of transformation and electric current, can also be used to transforming impedance, short-circuited conducting sleeve winding 4 short circuit, then the terminal voltage of short-circuited conducting sleeve winding 4 is zero, and the input impedance of reactance winding 3 is also zero.
In above two kinds of execution modes, guide assembly can adopt various ways of the prior art, front travel switch 72, rear travel switch 73 and moving track 71 can be comprised specifically for the first execution mode, front travel switch 72 and rear travel switch 73 are used for placing restrictions on stroke, and moving track 71 moves use for giving iron core valve armature 5.Moving track 71 is arranged on stepping motor 7, and described front travel switch 72 and rear travel switch 73 are arranged on the front-end and back-end of moving track 71 respectively.Can comprise front travel switch 72, rear travel switch 73 and moving track 71 for the second execution mode specifically, front travel switch 72 and rear travel switch 73 are used for placing restrictions on stroke equally, and moving track 71 is equally for moving use to iron core valve armature 5.Moving track 71 is arranged on deceleration motor 8, and described front travel switch 72 and rear travel switch 73 are arranged on the front-end and back-end of moving track 71 respectively.
Operation principle of the present invention is when the motor is energized, and control unit enters operating state, and at this moment induction reactance is maximum, and core of reactor magnet valve is in initial position, and reactance transformer works in Light Condition, and induction reactance is maximum.By the position of iron core valve armature 5, moved to short-circuit condition by Light Condition, change induction reactance, in order to change loop current.In order to maintain current constant, reactance value correspondence reduces, and reactor terminal voltage reduces, terminal voltage of motor rises, and starting power increases gradually, until motor terminal voltage reaches rated voltage, the terminal voltage of performance element reactor is also zero substantially, and motor full voltage runs, and start-up course terminates.Feature of the present invention is that current limliting performance element regulates the position of solenoid valve armature by negative feedback loop, and the resistance value of corresponding adjustment reactor, realizes current constant with corresponding resistance value.It has, and anti-overload ability is strong, without high power solid-state components, output waveform is undistorted, without features such as high order harmonic components.In three-phase electricity, the present invention can be designed as three-phase integrated type, and each stem stem one phase, totally three stem stems, use to coordinate three-phase alternating current.Compare with existing asynchronous machine soft start, have that volume is little, lightweight, temperature rise is little, low cost, especially its superiority more aobvious and value in 100KW is with the soft starter for motor application of upper large and super high power.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and specification; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection range of application claims is defined by appending claims and equivalent thereof.
Claims (5)
1. an electric reactor type soft starter for iron core valve device, it is characterized in that: comprise iron core valve armature (5), reactance winding (3), main iron core (1), from iron core (2) be wrapped in from the short-circuited conducting sleeve winding (4) iron core (2), described reactance winding (3) is intertwined by main iron core (1) with from iron core (2), and described short-circuited conducting sleeve winding (4) is by forming coupling circuit from iron core (2) and iron core valve armature (5) with reactance winding (3).
2. a kind of electric reactor type soft starter for iron core valve device according to claim 1, it is characterized in that: also comprise stepping motor (7), guide assembly and be connected in the controller (6) of reactance winding (3) input (31), described controller (6) is connected with stepping motor (7), and described iron core valve armature (5) is flexibly connected with stepping motor (7) by guide assembly.
3. a kind of electric reactor type soft starter for iron core valve device according to claim 1, it is characterized in that: also comprise deceleration motor (8) and circuit control switch group (9), described circuit control switch group (9) is connected with deceleration motor (8), and described iron core valve armature (5) is flexibly connected with deceleration motor (8) by guide assembly.
4. a kind of electric reactor type soft starter for iron core valve device according to claim 2, it is characterized in that: described guide assembly comprises front travel switch (72), rear travel switch (73) and moving track (71), described moving track (71) is arranged on stepping motor (7), and described front travel switch (72) and rear travel switch (73) are arranged on the front-end and back-end of moving track (71) respectively.
5. a kind of electric reactor type soft starter for iron core valve device according to claim 3, it is characterized in that: described guide assembly comprises front travel switch (72), rear travel switch (73) and moving track (71), described moving track (71) is arranged on deceleration motor (8), and described front travel switch (72) and rear travel switch (73) are arranged on the front-end and back-end of moving track (71) respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310298766.8A CN103326630B (en) | 2013-07-17 | 2013-07-17 | A kind of electric reactor type soft starter for iron core valve device |
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| CN201310298766.8A CN103326630B (en) | 2013-07-17 | 2013-07-17 | A kind of electric reactor type soft starter for iron core valve device |
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| CN103326630A CN103326630A (en) | 2013-09-25 |
| CN103326630B true CN103326630B (en) | 2015-10-21 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183635Y (en) * | 1994-02-06 | 1994-11-23 | 周世恩 | Reactance startor for multi-function electric motor |
| CN2369408Y (en) * | 1998-12-10 | 2000-03-15 | 李振实 | Electromagnetic starting switch for single phase motor |
| CN101882499A (en) * | 2010-06-25 | 2010-11-10 | 宜兴市万盛变压器有限公司 | Magnetic valve type controllable reactor |
| EP1746706B1 (en) * | 2001-03-30 | 2011-07-06 | Sanyo Electric Co., Ltd. | Synchronous induction motor |
| CN203340000U (en) * | 2013-07-17 | 2013-12-11 | 高海生 | Iron core valve reactor type soft starter |
-
2013
- 2013-07-17 CN CN201310298766.8A patent/CN103326630B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183635Y (en) * | 1994-02-06 | 1994-11-23 | 周世恩 | Reactance startor for multi-function electric motor |
| CN2369408Y (en) * | 1998-12-10 | 2000-03-15 | 李振实 | Electromagnetic starting switch for single phase motor |
| EP1746706B1 (en) * | 2001-03-30 | 2011-07-06 | Sanyo Electric Co., Ltd. | Synchronous induction motor |
| CN101882499A (en) * | 2010-06-25 | 2010-11-10 | 宜兴市万盛变压器有限公司 | Magnetic valve type controllable reactor |
| CN203340000U (en) * | 2013-07-17 | 2013-12-11 | 高海生 | Iron core valve reactor type soft starter |
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Effective date of registration: 20171227 Address after: 238000 Anhui city of Chaohu province Anhui Juchao by flag Mountain Road No. 6 Patentee after: Hefei one Pml Precision Mechanism Ltd Address before: Baohe District of Hefei city in Anhui province 230001 Lake Street Juwei Weigang Duan Ying 22 Building No. 1 Patentee before: Gao Haisheng |