CN203219226U - Shield machine air compressor frequency-sensitive rheostat starting control device - Google Patents
Shield machine air compressor frequency-sensitive rheostat starting control device Download PDFInfo
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- CN203219226U CN203219226U CN 201320191201 CN201320191201U CN203219226U CN 203219226 U CN203219226 U CN 203219226U CN 201320191201 CN201320191201 CN 201320191201 CN 201320191201 U CN201320191201 U CN 201320191201U CN 203219226 U CN203219226 U CN 203219226U
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Abstract
The utility model discloses a shield machine air compressor frequency-sensitive rheostat starting control device which comprises a main circuit and a PLC control circuit, wherein the power supply interface of a PLC is connected with an AC 220V external power supply; the PLC is respectively connected with a thermal relay FR, a stop button SB1 and a starting button SB2; the other ends of the thermal relay FR, the stop button SB1 and the starting button SB2 are at the same time connected with the terminal +L of the PLC; the PLC is also respectively connected with one ends of an AC contactor KM1 coil and an AC contactor KM2 coil correspondingly; the other ends of the AC contactor KM1 coil and the AC contactor KM2 coil are connected with a fuse FU1; and the other end of the fuse FU1 is connected with the AC 220V external power supply. With the provided starting control device, problems are effectively solved that an autotransformer is often severely heated and even burnt.
Description
Technical field
The utility model belongs to equipment control technology field, relates to a kind of shield machine air compressor machine frequency sensitive trheostat and starts control device.
Background technology
Shield machine is the complete construction equipment of the large-scale high-tech of a kind of quick underground excavation.Drive motor majority in the shield machine is alternating current motor, because alternating current motor is responsive to the fluctuation of supply voltage, so for capacity more greatly, the heavy slightly air compressor motor of frequent starting but load does not adopt the autotransformer reduced-voltage starting often starting.Yet the autotransformer capacity is less, and winding wire footpath is thinner, switches untimelyly when operating personnel operate in addition, often causes the autotransformer heating serious even burn.This has increased trouble not only for the Operation and maintenance personnel, has influenced normal engineering construction, has also influenced the further raising of shield machine construction efficient.
The utility model content
The purpose of this utility model provides a kind of shield machine air compressor machine frequency sensitive trheostat and starts control device, has solved unreasonable structure in the prior art, causes autotransformer to generate heat easily seriously even the problem of burning.
The technical scheme that the utility model adopts is, a kind of shield machine air compressor machine frequency sensitive trheostat starts control device, comprises main circuit and PLC control circuit,
Described main circuit structure is, external three phase mains successively with the corresponding series connection of knife switch QS, fuse FU, A.C. contactor KM2 main contact and thermal relay FR temperature-sensitive element, the corresponding connection of stator winding terminals of thermal relay FR temperature-sensitive element and motor M; The rotor winding connection end of motor M and the corresponding connection of A.C. contactor KM1 main contact, the three-phase contact short circuit of the A.C. contactor KM1 main contact other end; The rotor winding connection end of motor M also is connected with corresponding with the end of frequency sensitive trheostat RF, three interfaces short circuits of the frequency sensitive trheostat RF other end;
The structure of described PLC controller is that the power interface 1L of PLC controller is connected with the alternating current 220V external power supply; The interface I0.0 of PLC controller, interface I0.1 and interface I0.2 respectively with corresponding connection of an end of thermal relay FR, stop button SB1 and start button SB2, the other end of thermal relay FR, stop button SB1 and start button SB2 is connected with the terminal L+ of PLC controller simultaneously; The interface Q0.0 of PLC and interface Q0.1 respectively with A.C. contactor KM1 coil, the corresponding connection of A.C. contactor KM2 coil, the other end of A.C. contactor KM1 coil, A.C. contactor KM2 coil is connected with fuse FU1 simultaneously, and the fuse FU1 other end is connected with the alternating current 220V external power supply;
The earth terminal of PLC controller, N port respectively with main circuit in PE end, N hold corresponding connection, the L port of PLC controller passes through fuse FU2 successively and is connected with knife switch QS in the main circuit.
The beneficial effects of the utility model are; adopting frequency sensitive trheostat to replace autotransformer to carry out reduced-voltage starting uses; can effectively solve autotransformer often generates heat seriously even the problem of burning; reach good effect, not only reduced failure rate, improved the operational reliability of system; maintenance load is significantly reduced; reduce outage rate simultaneously, improved efficiency of construction, obtained good economic benefit.
Description of drawings
Fig. 1 is the main circuit schematic diagram in the utility model;
Fig. 2 is the PLC control circuit schematic diagram in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
With reference to Fig. 1, Fig. 2, shield machine air compressor machine frequency sensitive trheostat of the present utility model starts control device, comprises main circuit and the PLC control circuit of driving shield machine air compressor motor,
Described main circuit structure is, external three phase mains (L1, L2, L3 end) successively with the corresponding series connection of knife switch QS, fuse FU, A.C. contactor KM2 main contact and thermal relay FR temperature-sensitive element, stator winding terminals (U1, V1 and W1 hold) the corresponding connection of thermal relay FR temperature-sensitive element and motor M; The rotor winding connection end of motor M (U2, V2 and W2 end) and corresponding connection of A.C. contactor KM1 main contact, the three-phase contact short circuit (being connected to each other with lead) of the A.C. contactor KM1 main contact other end; The rotor winding connection end of motor M (U2, V2 and W2 end) also is connected three interfaces short circuits (being connected to each other with lead) of the frequency sensitive trheostat RF other end with corresponding with the end of frequency sensitive trheostat RF; Motor M is provided with earth terminal PE in addition.
The structure of described PLC controller is, the PLC controller is provided with interface I0.0, I0.1, I0.2, Q0.0, Q0.1, public port and power interface, and the power interface 1L of PLC controller is connected with the alternating current 220V external power supply; The interface I0.0 of PLC controller, interface I0.1 and interface I0.2 respectively with corresponding connection of an end of thermal relay FR, stop button SB1 and start button SB2, the other end of thermal relay FR, stop button SB1 and start button SB2 simultaneously and the terminal L+(+24V DC power supply of PLC controller) be connected; The interface Q0.0 of PLC and interface Q0.1 respectively with A.C. contactor KM1 coil, the corresponding connection of A.C. contactor KM2 coil, the other end of A.C. contactor KM1 coil, A.C. contactor KM2 coil is connected with fuse FU1 simultaneously, and the fuse FU1 other end is connected with the alternating current 220V external power supply;
The earth terminal of PLC controller, N port respectively with main circuit in PE end, N hold corresponding connection, the L port of PLC controller passes through fuse FU2 successively and holds with knife switch QS(and L in the main circuit) be connected.The 1M end of PLC controller and M end short circuit.
In a preferred embodiment, above-mentioned motor M is wound three-phase asynchronous motor, main circuit fuse FU model is RL1-60/25, control circuit fuse FU1, FU2 model are RL1-15/2, and knife switch QS model is HZ10-25/3, and the model of A.C. contactor KM1, KM2 is CJ10-10, push-button switch SB1, SB2 model are LA10-3H, the model of thermal relay FR is R16-20/3, and the frequency sensitive trheostat model is JR116-6, and the model of PLC controller is CPU226XM.
Claims (2)
1. a shield machine air compressor machine frequency sensitive trheostat starts control device, and its characteristics are: comprise main circuit and PLC control circuit,
Described main circuit structure is, external three phase mains successively with the corresponding series connection of knife switch QS, fuse FU, A.C. contactor KM2 main contact and thermal relay FR temperature-sensitive element, the corresponding connection of stator winding terminals of thermal relay FR temperature-sensitive element and motor M; The rotor winding connection end of motor M and the corresponding connection of A.C. contactor KM1 main contact, the three-phase contact short circuit of the A.C. contactor KM1 main contact other end; The rotor winding connection end of motor M also is connected with corresponding with the end of frequency sensitive trheostat RF, three interfaces short circuits of the frequency sensitive trheostat RF other end;
The structure of described PLC controller is that the power interface 1L of PLC controller is connected with the alternating current 220V external power supply; The interface I0.0 of PLC controller, interface I0.1 and interface I0.2 respectively with corresponding connection of an end of thermal relay FR, stop button SB1 and start button SB2, the other end of thermal relay FR, stop button SB1 and start button SB2 is connected with the terminal L+ of PLC controller simultaneously; The interface Q0.0 of PLC and interface Q0.1 respectively with A.C. contactor KM1 coil, the corresponding connection of A.C. contactor KM2 coil, the other end of A.C. contactor KM1 coil, A.C. contactor KM2 coil is connected with fuse FU1 simultaneously, and the fuse FU1 other end is connected with the alternating current 220V external power supply;
The earth terminal of PLC controller, N port respectively with main circuit in PE end, N hold corresponding connection, the L port of PLC controller passes through fuse FU2 successively and is connected with knife switch QS in the main circuit.
2. shield machine air compressor machine frequency sensitive trheostat according to claim 1 starts control device, and its characteristics are: the 1M end of described PLC controller and M end short circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191201 CN203219226U (en) | 2013-04-15 | 2013-04-15 | Shield machine air compressor frequency-sensitive rheostat starting control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191201 CN203219226U (en) | 2013-04-15 | 2013-04-15 | Shield machine air compressor frequency-sensitive rheostat starting control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203219226U true CN203219226U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320191201 Expired - Fee Related CN203219226U (en) | 2013-04-15 | 2013-04-15 | Shield machine air compressor frequency-sensitive rheostat starting control device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203219226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672368A (en) * | 2018-12-26 | 2019-04-23 | 廖钧澜 | Frequency sensitive trheostat step-down starting controller |
-
2013
- 2013-04-15 CN CN 201320191201 patent/CN203219226U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672368A (en) * | 2018-12-26 | 2019-04-23 | 廖钧澜 | Frequency sensitive trheostat step-down starting controller |
| CN109672368B (en) * | 2018-12-26 | 2022-04-22 | 廖钧澜 | Voltage-reducing starting control device for frequency-sensitive rheostat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20140415 |