CN201345630Y - Large-size electric engineering machinery starter - Google Patents
Large-size electric engineering machinery starter Download PDFInfo
- Publication number
- CN201345630Y CN201345630Y CNU2009200318767U CN200920031876U CN201345630Y CN 201345630 Y CN201345630 Y CN 201345630Y CN U2009200318767 U CNU2009200318767 U CN U2009200318767U CN 200920031876 U CN200920031876 U CN 200920031876U CN 201345630 Y CN201345630 Y CN 201345630Y
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- Prior art keywords
- engineering machinery
- autotransformer
- electric engineering
- motor
- large electric
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Abstract
The utility model discloses a large-size electric engineering machinery starter, which comprises an autotransformer which can supply electric power for a motor which is applied in large-size electric engineering machinery, a P L C controller and a plurality of switch elements which are respectively connected in series on a plurality of taps of the autotransformer and can be respectively exchanged corresponding to the taps, wherein the switch elements are controlled by the P L C controller to pick up in turn in chronological sequence, and enable the secondary voltage of the autotransformer to gradually lift to a plurality of normally-open switches of rating voltage of the motor. The utility model has simple structure and convenient use and operation, can effectively solve the impact problems to a transformer and a grid when starting the large-size electric engineering machinery, enables the large-size electric engineering machinery to be normally started without affecting the normal use of other machinery.
Description
Technical field
The utility model relates to Large Electric engineering machinery applied technical field, especially relates to a kind of Large Electric engineering machinery starter.
Background technology
At present, use some large-scale engineering machinery on-site, as the large-scale air compressor machine that the tunnel is used, 120 type mixers and road pitch mixing station etc., thereby the power of this type of Large Electric engineering machinery is very big, thereby its startup method is generally taked directly to open with the Y-Δ and started.But, because the construction site is in outlying remote place mostly, then high voltage source is inadequate, motor machine all is in service in addition, so the startup of high capacity motor machinery is all very difficult usually, it needs very big immediate current, thereby very big to the impact of transformer, one startup will cause the master switch breaking, brings inconvenience to normal construction.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of Large Electric engineering machinery starter is provided, it is simple in structure and use easy to operate, can effectively solve when Large Electric is mechanical to be started to the shock problem that transformer and electrical network brought, so that make Large Electric machinery can normally start and not influence the normal use of other machineries.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of Large Electric engineering machinery starter is characterized in that: comprise autotransformer that the used motor of Large Electric engineering machinery is powered, PLC controller and correspondingly be serially connected in a plurality of taps of autotransformer respectively and tackle a plurality of switch elements that described a plurality of tap is changed respectively mutually; Described a plurality of switch element is by in chronological sequence order adhesive successively of PLC controller control, and the corresponding autotransformer secondary voltage that makes is promoted to a plurality of normal open switch of motor rated voltage step by step.
Described switch element is an A.C. contactor.
The quantity of described switch element is 6; Described PLC controller is by the in chronological sequence order adhesive successively of 6 switch elements of control, makes the secondary voltage of autotransformer through six grades of rated voltages that reach motor after boosting.
The utility model compared with prior art has the following advantages, and 1, simple in structure, processing and fabricating is convenient and use easy and simple to handle.2, circuit is easy to connect and control safe and reliable, functional, specifically be to pass through the in chronological sequence order adhesive successively of a plurality of A.C. contactors of control, and the corresponding secondary voltage of autotransformer that makes reach the rated voltage of motor after promoting step by step by the PLC controller; That is to say, after on the use Large Electric engineering machinery the utility model being installed, boost step by step by the autotransformer secondary voltage that is controlled to be the used motor power supply of Large Electric engineering machinery, make above-mentioned motor behind low voltage starting, behind multi-change speed, reach the motor rated speed, i.e. the normal operating condition of motor.3, applied widely and result of use good, safe and reliable, can satisfy the requirement that various electronic engineering machinery start, and finally reach the purpose of protection Large Electric engineering machinery safe handling.In sum, the utility model is controlled the adhesive in chronological order of a plurality of A.C. contactors by the PLC controller programming, then reach the purpose of changing the autotransformer tap respectively, make the used motor of Large Electric engineering machinery with low voltage starting, and by reaching rated voltage after multistage the boosting, thereby realize the smooth starting of motor, thus when having avoided the Large Electric engineering machinery to open merit to the impact that electrical network brought, can not cause large-area power-cuts.In a word, the utility model can effectively solve when Large Electric is mechanical to be started to the shock problem that transformer and electrical network brought, so that make Large Electric machinery can normally start and not influence the normal use of other machineries.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is an electrical principle block diagram of the present utility model.
Description of reference numerals:
The 1-PLC controller; 2-1-A.C. contactor one; 2-2-A.C. contactor two;
2-3-A.C. contactor three; 2-4-A.C. contactor four; 2-5-A.C. contactor five;
2-6-A.C. contactor six; The 3-autotransformer; The 4-motor.
Embodiment
As shown in Figure 1, the utility model comprises autotransformer 3 that the used motor 4 of Large Electric engineering machinery is powered, PLC controller 1 and correspondingly is serially connected in more than 3 tap of autotransformer respectively and tackles a plurality of switch elements that described a plurality of tap is changed respectively mutually.Described a plurality of switch element is by in chronological sequence order adhesive successively of PLC controller 1 control, and corresponding autotransformer 3 secondary voltages that make are promoted to a plurality of normal open switch of motor 4 rated voltages step by step.
In the present embodiment, described switch element is an A.C. contactor, and the quantity of described switch element is 6, is specially A.C. contactor one 2-1, A.C. contactor two 2-2, A.C. contactor three 2-3, A.C. contactor four 2-4, A.C. contactor five 2-5 and A.C. contactor six 2-6.Described PLC controller 1 is by the in chronological sequence order adhesive successively of 6 switch elements of control, makes the secondary voltage of autotransformer 3 through six grades of rated voltages that reach motor 4 after boosting.
The course of work of the present utility model is: at first, according to concrete actual conditions, correspondence is connected in series 6 A.C. contactors respectively in six taps of the autotransformer 3 of powering for motor 4; Afterwards, PLC controller 1 is programmed, and it is corresponding by the in chronological sequence order adhesive successively of PLC controller 1 control 6 A.C. contactors that connect, thereby reach six purposes that tap is changed respectively tackling autotransformer 3 mutually, make the secondary voltage of autotransformer 3 through six grades of rated voltages that reach motor 4 after boosting.In sum, after realizing reaching its rated voltage after motor 4 boosts with low voltage starting and by six grades by the utility model, enter normal operating condition, thereby realized the smooth starting of the used motor 4 of Large Electric engineering machinery.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection range of technical solutions of the utility model according to the utility model technical spirit.
Claims (3)
1. Large Electric engineering machinery starter is characterized in that: comprise that autotransformer (3), PLC controller (1) and correspondence that the used motor of Large Electric engineering machinery (4) is powered are serially connected in a plurality of taps of autotransformer (3) respectively and tackle a plurality of switch elements that described a plurality of tap is changed respectively mutually; Described a plurality of switch element is by in chronological sequence order adhesive successively of PLC controller (1) control, and corresponding autotransformer (3) secondary voltage that makes is promoted to a plurality of normal open switch of motor (4) rated voltage step by step.
2. according to the described Large Electric engineering machinery of claim 1 starter, it is characterized in that: described switch element is an A.C. contactor.
3. according to claim 1 or 2 described Large Electric engineering machinery starters, it is characterized in that: the quantity of described switch element is 6; Described PLC controller (1) is by the in chronological sequence order adhesive successively of 6 switch elements of control, makes the secondary voltage of autotransformer (3) through six grades of rated voltages that reach motor (4) after boosting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200318767U CN201345630Y (en) | 2009-02-11 | 2009-02-11 | Large-size electric engineering machinery starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200318767U CN201345630Y (en) | 2009-02-11 | 2009-02-11 | Large-size electric engineering machinery starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201345630Y true CN201345630Y (en) | 2009-11-11 |
Family
ID=41277215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200318767U Expired - Fee Related CN201345630Y (en) | 2009-02-11 | 2009-02-11 | Large-size electric engineering machinery starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201345630Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685306A (en) * | 2016-11-30 | 2017-05-17 | 王振铎 | Automatic energy saving system of three-phase alternating current high voltage asynchronous motor |
-
2009
- 2009-02-11 CN CNU2009200318767U patent/CN201345630Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685306A (en) * | 2016-11-30 | 2017-05-17 | 王振铎 | Automatic energy saving system of three-phase alternating current high voltage asynchronous motor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20180211 |