CN203399027U - Adjustable iron-core-valve soft starter - Google Patents
Adjustable iron-core-valve soft starter Download PDFInfo
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- CN203399027U CN203399027U CN201320449655.8U CN201320449655U CN203399027U CN 203399027 U CN203399027 U CN 203399027U CN 201320449655 U CN201320449655 U CN 201320449655U CN 203399027 U CN203399027 U CN 203399027U
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Abstract
The utility model relates to an adjustable iron-core-valve soft starter, solving the defects of likely higher harmonics, poor overload capability and high fault rate of conventional soft starters in the prior art. The adjustable iron-core-valve soft starter comprises an iron-core valve armature (5), a master stem (1), a reactance winding (3) wound on the master stem (1), a slave stem (2), and a short-circuit ring winding (4) wound on the slave stem (2). The short-circuit ring winding (4) and the reactance winding (3) form a coupling loop via the slave stem (2), the master stem (1) and the iron-core valve armature (5). The adjustable iron-core-valve soft starter of the utility model enables soft starting of a motor, without waveform distortion, higher harmonics or electric network pollution.
Description
Technical field
The utility model relates to Start Technology field, is the adjustable soft starter device of a kind of iron core valve specifically.
Background technology
In the power industry fields such as building, metallurgy, mine, motor device is used in a large number.When electric motor starting, inrush current is very large, when power of motor capacity is larger, can cause interference to electrical network and other loads, even endangers the safe operation of electrical network.In order to address this problem, mostly used the method for soft start.And Controlled saturable reactor soft start or the electronic type soft start used at present, owing to generally adopting DC excitation or exchanging isolation self-excitation reactor, its performance element is used the high power solid-state components such as RSC, RS, its control circuit is complicated, easily produce high order harmonic component, overload capacity is poor, failure rate is high, and electrical network is existed to certain pollution.How to develop a kind of soft initiator that has no waveform distortion, do not produce high order harmonic component and become the technical problem of being badly in need of solution.
Summary of the invention
The purpose of this utility model is easily to produce high order harmonic component in order to solve soft initiator in prior art, and the defect that overload capacity is poor, failure rate is high provides the adjustable soft starter device of a kind of iron core valve to solve the problems referred to above.
To achieve these goals, the technical solution of the utility model is as follows:
The adjustable soft starter device of a kind of iron core valve, comprise iron core valve armature, main stem stem, be wrapped in reactance winding on main stem stem, from stem stem be wrapped in the short-circuited conducting sleeve winding from stem stem, described short-circuited conducting sleeve winding is by from stem stem, main stem stem and iron core valve armature and reactance winding formation coupling circuit.
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 guide assembly, deceleration motor and circuit control switch group, described circuit control switch group is connected with deceleration motor, and 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 respectively the front-end and back-end of moving track.
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 respectively the front-end and back-end of moving track.
beneficial effect
The adjustable soft starter device of a kind of iron core valve of the present utility model, compared with prior art makes motor start-up characteristic softening, has no waveform distortion and does not produce high order harmonic component, pollution-free to electrical network.The overload capacity that has improved equipment, reliability is high.Owing to adopting ferromagnetic executive component pressure regulation, selection is conveniently easily manufactured, and control circuit is simple, and it is level and smooth, quick that current limliting regulates, and without high power solid-state components, has the advantages such as volume is little, lightweight, low-cost, overload capacity is strong.
accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Fig. 2 is the structural representation of the utility model the first execution mode
Fig. 3 is the structural representation of the utility model the second execution mode
Fig. 4 is the structural representation of the utility model the second execution mode center line way control switch group
Wherein, the main stem stem of 1-, 2-travel switch, 91-control switch, 92-selector switch, 93-forward travel switch, 94-from stem stem, 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, 61-iron core column, 71-moving track, 72-front travel switch, 73-reverses travel switch, 95-relay, 96-main power source input port, 97-from output port of power source.
Embodiment
For making that architectural feature of the present utility model and the effect reached are had a better understanding and awareness, in order to preferred embodiment and accompanying drawing, coordinate detailed explanation, be described as follows:
As shown in Figure 1, the adjustable soft starter device of a kind of iron core valve described in the utility model, comprise iron core valve armature 5, main stem stem 1, be wrapped in reactance winding 3 on main stem stem 1, from stem stem 2, be wrapped in the short-circuited conducting sleeve winding 4 from stem stem 2.Main stem stem 1, from stem stem 2, iron core column 61 bottoms, be connected, conducting mutually, mutually form an overall structure together, main stem stem 1, from stem stem 2, iron core column 61 tops, by iron core valve armature 5 left and right, select to form main stem stems 1 and from the path between stem stem 2 or main stem stem 1 and iron core column 61.Described short-circuited conducting sleeve winding 4 is by forming coupling circuit from stem stem 2, iron core valve armature 5, main stem stem 1 with reactance winding 3, so just, formed the coupling circuit of reactance winding 3 with 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, the impedance of the short-circuited conducting sleeve winding 4 from stem stem 2 is very little approximates zero, now from stem stem 2 and main stem stem 1, the common reactance winding 3 being wound around also approximates zero, can be used as wire and use, thereby guaranteed that the low-loss of reactance winding 3 normally moves.And move to right in iron core column 61 time when iron core valve armature 5; short-circuited conducting sleeve winding 4 has been abandoned in whole loop; retained reactance winding 3; the now impedance of reactance winding 3 is maximum; when starting, reach restriction inrush current; thereby play the effect of protection equipment and circuit, to realize the object of soft start.At the electric motor starting initial stage, the characteristic of the impedance maximum by the reactance winding 3 on main stem stem 1, carries out current limliting to motor.In start-up course, again by iron core valve armature 5 left toward moving from stem stem 2, also driven the impedance in loop to change to Z0 from Zm, final iron core valve armature 5 departs from iron core column 61 completely, short-circuited conducting sleeve winding 4 is by forming coupling circuit from stem stem 2, iron core valve armature 5 and main stem stem 1 and reactance winding 3, the impedance of reactance winding is reduced to and is approximated zero, can be used as wire and uses, and has completed the startup of motor.
As the first embodiment of the present utility model, as shown in Figure 2, also comprise stepping motor 7, guide assembly and be connected in the controller 6 of reactance winding 3 inputs 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.Maximum when zero moment reactance value that motor puts into operation, electric current is connected, maximum starting current can be limited in to 1～2.5 times of rated current as required.The electric current detecting along with the starting of motor declines, and controls iron core valve armature 5 move to corresponding position by controller 6, and reactance value is declined, and the electric current that compensation declines, reaches constant current starting.After motor stops, by controller 6, control 5 involutions of iron core valve armature to the maximum reactance value of initial position, in order to starting next time, complete a starting cycle.Stepping motor 7 is for controlling iron core valve armature 5 from iron core column 61 to the movement between stem stem 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 utility model is when reality is used, and input line 31 is connected respectively entering of transmission line and goes out with output line 32, presets the starting current value of needs.Iron core valve armature 5 is operated in the initial condition in main stem stem 1 and iron core column 61.After the electric motor starting that switches on power, reactance winding 3 is by the starting current of setting, and controls iron core valve armature 5 from iron core column 61 to from stem stem 2 progressive motions, thereby reduce reactance value by controller 6, maintains starting current constant.When iron core valve armature 5 is smoothly moved to the left to after high order end, starting current is less than or equal to set point.As shown in Figure 2, now iron core valve armature 5 departs from iron core column 61 completely, and comprehensively closed from stem stem 2.Now short-circuited conducting sleeve winding 4 short circuits, at this moment inductance value is very little, thereby reactance is little, on not impact of the operation of motor, is 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 the electric current on reactance winding 3 changes, its self-induced magnetic flux also will change with electric current.According to law of magnetic induction, except producing self induction voltage, also will in short-circuited conducting sleeve winding 4, also produce induced voltage in reactance winding 3.According to ideal transformer model, ideal transformer be one can not energy storage multiterminal element, the instantaneous power identically vanishing that its absorbs.Ideal transformer, except voltage of transformation and electric current, can also be used to transforming impedance, and due to 4 short circuits of short-circuited conducting sleeve winding, 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 utility model, 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 in iron core column 61 with from the movement between stem stem 2.Circuit control switch group 9 is controlled deceleration motors 8, thereby controls iron core valve armature 5 to from the level and smooth progressive motion of stem stem 2, thereby reduces reactance value, maintains the starting current value of starting setting.As shown in Figure 4, circuit control switch group is controlled deceleration motor 8, deceleration motor 8 can be set according to motor needed time when reality starts, deceleration motor 8 just can carry out forward or reverse the time according to the rules, to reach the object that drives iron core valve armature 5.Main power source input port 96 and from power input mouth 97 is connected with the mains respectively, Closed control switch 91, relay 95 adhesive selector switches 92, now forward travel switch 93 and reversion travel switch 94 are closure state, 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 are similar in the use, and input line 31 is connected respectively entering of transmission line and goes out with output line 32, according to the needed time of soft starter for motor, preset the time running life of a starting current.Iron core valve armature 5 is operated in the initial condition of right-hand member iron core column 61, after the electric motor starting that switches on power, reactance winding 3 is by the starting current of setting, by circuit control switch group 9 control deceleration motors 8 by iron core valve armature 5 from iron core column 61 to from the level and smooth progressive motion of stem stem 2, thereby reduce reactance value, maintain starting current and remain unchanged.When 8 operations of deceleration motor arrive the time limit of appointment, iron core valve armature is smoothly moved to the left to high order end, and now starting current will be less than or equal to set point.Now iron core valve armature 5 departs from iron core column 61 completely, main stem stem 1 and comprehensively closed from stem stem 2.Now, 4 short circuits of short-circuited conducting sleeve winding, at this moment inductance value is very little, thereby reactance is little, on not impact of the operation of motor, is 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 the electric current on reactance winding 3 changes, its self-induced magnetic flux also will change with electric current.According to law of magnetic induction, except producing self induction voltage, also will in short-circuited conducting sleeve winding 4, also produce induced voltage in reactance winding 3.According to ideal transformer model, ideal transformer be one can not energy storage multiterminal element, the instantaneous power identically vanishing that its absorbs.Ideal transformer, except voltage of transformation and electric current, can also be used to transforming impedance, 4 short circuits of short-circuited conducting sleeve winding, and the terminal voltage of short-circuited conducting sleeve winding 4 is zero, 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, for the first execution mode, can comprise front travel switch 72, rear travel switch 73 and moving track 71 specifically, front travel switch 72 and rear travel switch 73 are used for placing restrictions on stroke, and moving track 71 is for moving use to 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 respectively moving track 71 front-end and back-end.For the second execution mode, can comprise front travel switch 72, rear travel switch 73 and moving track 71 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 respectively moving track 71 front-end and back-end.
Operation principle of the present utility model is that control unit enters operating state when electric motor starting, 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, by Light Condition, to short-circuit condition, moved, 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, the operation of motor full voltage, and start-up course finishes.Feature of the present utility model is that current limliting performance element is regulated the position of magnet valve armature by negative feedback loop, and the resistance value of corresponding adjustment reactor, realizes current constant with corresponding resistance value.It has anti-overload ability strong, without high power solid-state components, output waveform is undistorted, without features such as high order harmonic components.In three-phase electricity, the utility model can be designed as three-phase, each phase, and totally three, to coordinate three-phase alternating current to use.Compare with existing asynchronous machine soft start, have that volume is little, lightweight, temperature rise is little, low-cost, especially 100KW with the soft starter for motor application of upper large and super high power in more aobvious its superiority and value.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection range that the utility model requires is defined by appending claims and equivalent thereof.
Claims (5)
1. the adjustable soft starter device of iron core valve, it is characterized in that: comprise iron core valve armature (5), main stem stem (1), be wrapped in reactance winding (3) on main stem stem (1), from stem stem (2) be wrapped in the short-circuited conducting sleeve winding (4) from stem stem (2), described short-circuited conducting sleeve winding (4) is by from stem stem (2), main stem stem (1) and iron core valve armature (5) and reactance winding (3) formation coupling circuit.
2. the adjustable soft starter device of a kind of iron core valve 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. the adjustable soft starter device of a kind of iron core valve according to claim 1, it is characterized in that: also comprise guide assembly, 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. the adjustable soft starter device of a kind of iron core valve 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), it is upper that described moving track (71) is arranged on stepping motor (7), and described front travel switch (72) and rear travel switch (73) are arranged on respectively the front-end and back-end of moving track (71).
5. the adjustable soft starter device of a kind of iron core valve 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), it is upper that described moving track (71) is arranged on deceleration motor (8), and described front travel switch (72) and rear travel switch (73) are arranged on respectively the front-end and back-end of moving track (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320449655.8U CN203399027U (en) | 2013-07-26 | 2013-07-26 | Adjustable iron-core-valve soft starter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320449655.8U CN203399027U (en) | 2013-07-26 | 2013-07-26 | Adjustable iron-core-valve soft starter |
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| CN203399027U true CN203399027U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320449655.8U Expired - Fee Related CN203399027U (en) | 2013-07-26 | 2013-07-26 | Adjustable iron-core-valve soft starter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105897096A (en) * | 2016-06-14 | 2016-08-24 | 上海电机学院 | Automatic adjustment reactor for high-voltage motor starting and adjustment method of automatic adjustment reactor |
| CN107728092A (en) * | 2017-10-02 | 2018-02-23 | 国网山西省电力公司电力科学研究院 | The automatic precision pre-check device and method of calibration of Transformer Winding no-load voltage ratio tester |
-
2013
- 2013-07-26 CN CN201320449655.8U patent/CN203399027U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105897096A (en) * | 2016-06-14 | 2016-08-24 | 上海电机学院 | Automatic adjustment reactor for high-voltage motor starting and adjustment method of automatic adjustment reactor |
| CN107728092A (en) * | 2017-10-02 | 2018-02-23 | 国网山西省电力公司电力科学研究院 | The automatic precision pre-check device and method of calibration of Transformer Winding no-load voltage ratio tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20160726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |