CN203340000U - Iron core valve reactor type soft starter - Google Patents
Iron core valve reactor type soft starter Download PDFInfo
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- CN203340000U CN203340000U CN2013204234536U CN201320423453U CN203340000U CN 203340000 U CN203340000 U CN 203340000U CN 2013204234536 U CN2013204234536 U CN 2013204234536U CN 201320423453 U CN201320423453 U CN 201320423453U CN 203340000 U CN203340000 U CN 203340000U
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- iron core
- core valve
- winding
- travel switch
- reactance
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Abstract
The utility model relates to an iron core valve reactor type soft starter, and compared with the prior art, the defects of easy generation of a high harmonic, poor overload capacity and high failure rate of a soft starter are solved. The iron core valve reactor type soft starter comprises an iron core valve armature (5), a reactance winding (3), a main iron core (1), a secondary iron core (2) and a short circuit loop winding (4) which is wound around the secondary iron core (2). The main iron core (1) and the secondary iron core (2) are entwined together. A coupled circuit is formed by the short circuit loop winding (4) and the reactance winding (3) through the secondary iron core (2) and the iron core valve armature (5). According to the iron core valve reactor type soft starter, the motor starting characteristics are softened, there is no wave distortion, the high harmonic is not generated, and a power grid is not polluted.
Description
Technical field
The utility model relates to the Start Technology field, is the soft start of a kind of iron core valve reactor formula 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 the 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 complexity, 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.
The utility model content
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 soft start of a kind of iron core valve reactor formula to solve the problems referred to above.
To achieve these goals, the technical solution of the utility model is as follows:
The soft start of a kind of iron core valve reactor formula, comprise iron core valve armature, reactance winding, main iron core, from iron core be wrapped in the short-circuited conducting sleeve winding from iron core, described reactance winding is intertwined by main iron core with from iron core, and described short-circuited conducting sleeve winding passes through from iron core 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 by guide assembly and stepping motor.
Also comprise deceleration motor and circuit control switch group, described circuit control switch group is connected with the deceleration motor, and described iron core valve armature is flexibly connected by guide assembly and deceleration motor.
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 the 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
A kind of iron core valve reactor formula of the present utility model soft start, compared with prior art make the motor start-up characteristic softening, has no waveform distortion and do not produce high order harmonic component, pollution-free to electrical network.Improved the overload capacity of 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 is regulated, and without the high power solid-state components, has the advantages such as volume is little, lightweight, low-cost, overload capacity is strong.
the accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
The structural representation that Fig. 2 is the utility model the first execution mode
The structural representation that Fig. 3 is the utility model the second execution mode
The structural representation that Fig. 4 is the utility model the second execution mode center line way control switch group
Wherein, 1-main iron core, 2-travel switch, 91-control switch, 92-selector switch, 93-forward travel switch, 94-from 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-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, coordinate detailed explanation in order to preferred embodiment and accompanying drawing, be described as follows:
As shown in Figure 1, a kind of iron core valve reactor formula described in the utility model soft start, comprise iron core valve armature 5, reactance winding 3, main iron core 1, from iron core 2 be wrapped in the short-circuited conducting sleeve winding 4 from iron core 2.Described reactance winding 3 is intertwined by main iron core 1 with from iron core 2, main iron core 1, from iron core 2, can mutually combine, and to coordinate reactance winding 3, both is wound around jointly.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, formed the loop of reactance winding 3 with short-circuited conducting sleeve winding 4, reactance value minimum now, impedance transformation principle according to the principle device 1:1 of ideal transformer, the impedance of the short-circuited conducting sleeve winding 4 from iron core 2 is very little approximates zero, now from iron core 2 and main iron core 1, the common reactance winding 3 be 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, when iron core valve armature 5 moves on main iron core 1, short-circuited conducting sleeve winding 4 has been abandoned in whole loop, retained reactance winding 3; the impedance maximum of reactance winding 3 now; reach the restriction inrush current when starting, thereby play the effect of protection equipment and circuit, to realize the purpose of soft start.At the electric motor starting initial stage, the characteristic of the impedance maximum by the reactance winding 3 on main iron core 1, carry out current limliting to motor.In start-up course, again by iron core valve armature 5 from main iron core 1 toward moving from iron core 2, also having driven the impedance in the loop changes to Z0 from Zm, final iron core valve armature 5 breaks away from main iron core 1 fully, with form coupling circuits from iron core 2, 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 by guide assembly and stepping motor 7.Controller 6 is connected on input 31, for monitoring reactance winding 3 and control step motor 7.Zero moment reactance value maximum when motor puts into operation, electric current is connected, can be limited in maximum starting current 1～2.5 times of rated current as required.The electric current detected along with the starting of motor descends, and controls iron core valve armature 5 by controller 6 and moves to corresponding position, and reactance value is descended, and the electric current that compensation descends, reach constant current starting.After motor stops, by controller 6, control the maximum reactance value of iron core valve armature 5 involutions to initial position, in order to starting next time, complete a starting cycle.Stepping motor 7 is for controlling iron core valve armature 5 from main iron core 1 to 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 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 of main iron core 1.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 to from iron core 2 progressive motions by controller 6, thereby reduces reactance value, maintains starting current constant.After iron core valve armature smoothly moves right low order end, starting current is less than or equal to set point.Now iron core valve armature 5 breaks away from main iron core 1 fully, and comprehensively closed from iron core 2.Now, 4 short circuits of short-circuited conducting sleeve winding, at this moment inductance value is very little, thereby reactance is little, and the not impact of operation on motor, be 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 the ideal transformer model, ideal transformer be one can not energy storage the 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.
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 by guide assembly and deceleration motor 8.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 is controlled deceleration motors 8, thereby controls iron core valve armature 5 to from the level and smooth progressive motion of iron core 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 purpose 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 main iron core 1, 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 to from the level and smooth progressive motion of iron core 2, thereby reduce reactance value, maintain starting current and remain unchanged.When deceleration motor 8 operation arrives the time limit of appointments, the iron core valve armature low order end that smoothly moves right, now starting current will be less than or equal to set point.Now iron core valve armature 5 breaks away from main iron core 1 fully, and comprehensively closed from iron core 2.Now, 4 short circuits of short-circuited conducting sleeve winding, at this moment inductance value is very little, thereby reactance is little, and the not impact of operation on motor, be 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 the ideal transformer model, ideal transformer be one can not energy storage the 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, can comprise front travel switch 72, rear travel switch 73 and moving track 71 for the first execution mode 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 the front-end and back-end of moving track 71.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 respectively the front-end and back-end of moving track 71.
Operation principle of the present utility model is that control unit enters operating state when electric motor starting, induction reactance maximum at this moment, and the core of reactor magnet valve is in initial position, and reactance transformer works in Light Condition, the induction reactance 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, the reactance value correspondence reduces, and the 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.Characteristics of the present utility model are that the current limliting performance element is regulated the position of magnet valve armature by negative feedback loop, and the resistance value of corresponding adjustment reactor, realize current constant with corresponding resistance value.It has anti-overload ability strong, without the high power solid-state components, output waveform is undistorted, without characteristics such as high order harmonic components.On three-phase electricity, the utility model can be designed as three-phase integrated type, each stem stem one phase, and totally three stem stems, used to coordinate three-phase alternating current.With existing asynchronous machine soft start, compare, 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.
Above demonstration 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 break away 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. iron core valve reactor formula soft start, 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 the short-circuited conducting sleeve winding (4) from 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 iron core valve reactor formula according to claim 1 soft start, 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 by guide assembly and stepping motor (7).
3. a kind of iron core valve reactor formula according to claim 1 soft start, 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 by guide assembly and deceleration motor (8).
4. a kind of iron core valve reactor formula according to claim 2 soft start, 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. a kind of iron core valve reactor formula according to claim 3 soft start, 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 |
|---|---|---|---|
| CN2013204234536U CN203340000U (en) | 2013-07-17 | 2013-07-17 | Iron core valve reactor type soft starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204234536U CN203340000U (en) | 2013-07-17 | 2013-07-17 | Iron core valve reactor type soft starter |
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| Publication Number | Publication Date |
|---|---|
| CN203340000U true CN203340000U (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013204234536U Expired - Fee Related CN203340000U (en) | 2013-07-17 | 2013-07-17 | Iron core valve reactor type soft starter |
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| CN (1) | CN203340000U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326630A (en) * | 2013-07-17 | 2013-09-25 | 高海生 | Electric reactor type soft starter for iron core valve |
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2013
- 2013-07-17 CN CN2013204234536U patent/CN203340000U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326630A (en) * | 2013-07-17 | 2013-09-25 | 高海生 | Electric reactor type soft starter for iron core valve |
| CN103326630B (en) * | 2013-07-17 | 2015-10-21 | 高海生 | A kind of electric reactor type soft starter for iron core valve device |
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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: 20131211 Termination date: 20160717 |
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| CF01 | Termination of patent right due to non-payment of annual fee |