CN215890407U - Train air pump starting circuit - Google Patents
Train air pump starting circuit Download PDFInfo
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- CN215890407U CN215890407U CN202121244376.9U CN202121244376U CN215890407U CN 215890407 U CN215890407 U CN 215890407U CN 202121244376 U CN202121244376 U CN 202121244376U CN 215890407 U CN215890407 U CN 215890407U
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- air pump
- starting
- contactor
- main contact
- circuit
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses a train air pump starting circuit, which belongs to the technical field of electronic control, and comprises a control branch and a starting branch, wherein the control branch comprises an air pump starting switch, an air pump pressure switch, a PLC (programmable logic controller) control module and a control coil of a contactor, the air pump starting switch and the air pump pressure switch are respectively connected with the input end of the PLC control module correspondingly, and the output end of the PLC control module is connected with the control coil through an amplifier; the starting branch circuit comprises a main contact of the contactor and an air pump, and the main contact is connected between a positive pole and a negative pole of the power supply after being connected with the air pump in series; the power of the contactor is less than or equal to 22kW, the power voltage of the control coil is direct current 110V, the rated current of the main contact is direct current 250A, and the rated voltage of the main contact is direct current 110V. The utility model can solve the problems that the existing train air pump starting circuit has complex circuit, is easy to generate faults and is difficult to maintain and check.
Description
Technical Field
The utility model relates to the technical field of electronic control, in particular to a starting circuit for a train air pump.
Background
The air pump is an important device on a train for transferring hot metal ladles and small goods in a steel-making enterprise, and if the current is too large when the air pump is started, the air pump can impact a motor of the air pump, so that the service life of the air pump is influenced, the barrier rate of the whole machine is high, the stability is poor, and the operation efficiency and the driving safety of a locomotive are seriously influenced. Therefore, the existing air pump starting circuit mostly adopts a contactor with a secondary constant main contact, and the air pump starting circuit comprises a control branch circuit and a starting branch circuit, wherein the control branch circuit comprises an air pump starting switch, an air pump pressure switch, a PLC (programmable logic controller) control module, a first coil end and a second coil end of the contactor; the air pump starting switch and the air pump pressure switch are correspondingly connected with the input end of the PLC control module, and the output end of the PLC control module is correspondingly connected with the first coil end and the second coil end of the contactor through the amplifier; and meanwhile, in order to prevent the air pump from being impacted by excessive current, the second normally open contact is connected with a starting protection resistor in parallel. When the wind pump starting device is started, the PLC control module firstly controls the first coil end of the contactor to be powered on, so that the first normally open contact of the contactor is closed, the wind pump is started in a first stage, then the second coil end of the contactor is controlled to be powered on, so that the second normally open contact of the contactor is closed, and the wind pump is started in a second stage. However, in practical application, the air pump starting circuit has the problems of complex circuit, easy generation of faults and difficult maintenance and inspection.
SUMMERY OF THE UTILITY MODEL
The utility model provides a train air pump starting circuit which can solve the problems that the existing train air pump starting circuit is complex in circuit, easy to generate faults and difficult to maintain and check.
In order to solve the problems, the technical scheme adopted by the utility model is as follows: the train air pump starting circuit comprises a control branch and a starting branch, wherein the control branch comprises an air pump starting switch, an air pump pressure switch, a PLC (programmable logic controller) control module and a control coil of a contactor, the air pump starting switch and the air pump pressure switch are respectively connected with the input end of the PLC control module correspondingly, and the output end of the PLC control module is connected with the control coil through an amplifier; the starting branch circuit comprises a main contact of the contactor and an air pump, and the main contact is connected in series with the air pump and then connected between a positive pole and a negative pole of a power supply; the power of contactor is less than or equal to 22kW, the mains voltage of control coil is direct current 110V, the rated current of main contact is direct current 250A, the rated voltage of main contact is direct current 110V.
In the above technical solution, a more specific technical solution may also be: the starting branch circuit further comprises a protector, and the protector is connected with the main contact in parallel and used for protecting the air pump.
Further: the starting branch further comprises a fuse connected between the positive power supply terminal and the main contact.
Further: the contactor is a contactor with the model number S156K-33-110V.
Further: the protector is a protector with a model PRS-80C.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
1. the starting circuit cancels a secondary starting circuit for starting the original air pump, can start the air pump once, has simple circuit, has long service life of integral accessories in practical application, is not easy to damage, not only saves the maintenance cost of equipment, but also reduces the fault time of a locomotive, ensures the transportation efficiency, simultaneously improves the safety environment and obtains very good effect.
2. Due to the adoption of the protector with the model of PRS-80C, on one hand, when the main contact is disconnected, the capacitor in the protector starts to charge, and when the main contact is closed, the capacitor does not discharge to the main loop due to the cut-off of the diode in the protector, so that the main loop is not influenced, and on the other hand, the protector can inhibit the arcing of the main contact and carry out the collection freewheeling diode, short-circuit fusing protection and overvoltage protection on the starting branch.
Drawings
Fig. 1 is a circuit diagram of a control branch according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of a startup branch of an embodiment of the utility model.
Detailed Description
The utility model will be further described in detail with reference to the following examples:
the train air pump starting circuit shown in fig. 1 and 2 comprises a control branch and a starting branch, wherein the control branch comprises an auxiliary power generation switch 1, an air pump starting switch 2, a manual switch 3, an air pump pressure switch 4, a PLC control module 6, an amplification module 7, a control coil 5-1 of an auxiliary power generation circuit and a control coil 8-1 of a contactor, the air pump starting switch 1, the air pump starting switch 2, the manual switch 3 and the air pump pressure switch 4 are respectively connected with the input end of the PLC control module correspondingly, and the output end of the PLC control module is respectively connected with the control coil 5-1 of the auxiliary power generation circuit and the control coil 8-1 of the contactor correspondingly through an amplifier; the starting branch comprises a fuse 9, a main contact 8-2 of the contactor, an air pump 10 and a protector 11, the fuse 9, the main contact 8-2 of the contactor and the air pump are sequentially connected in series and then connected between a positive pole and a negative pole of a power supply, and the protector 11 is connected with the main contact 8-2 in parallel and used for protecting the air pump; the power of the contactor is less than or equal to 22kW, the power voltage of the control coil is 110V direct current, the rated current of the main contact is 250A direct current, and the rated voltage of the main contact is 110V direct current; the contactor is a contactor with the model number of S156K-33-110V; the protector is a protector with a model PRS-80C.
When the air pump is started, the auxiliary power generation switch 1 is pressed down, at the moment, the PLC control module 6 enables the control coil 5-1 of the auxiliary power generation circuit to be electrified through the amplification module 7, the auxiliary engine generates power and pumps air for the main air cylinder through the air compressor until the air pressure of the main air cylinder is lower than 750kPa, the air pump pressure switch 4 is closed and drives the air pump starting switch 2 to be closed, at the moment, the PLC control module 6 enables the control coil 8-1 of the contactor to be electrified through the amplification module 7, the main contact 8-2 of the contactor is closed, the starting branch is connected, and the air pump motor enters a no-load starting working condition.
The utility model cancels the secondary starting circuit of the original air pump, can start the air pump once, has simple circuit, has long service life of the whole fittings in practical application, is not easy to damage, not only saves the maintenance cost of equipment, but also reduces the failure time of a locomotive, ensures the transportation efficiency, simultaneously improves the safety environment and obtains good effect.
Claims (5)
1. The utility model provides a train air pump starting circuit, includes control branch road and start branch road, its characterized in that: the control branch comprises an air pump starting switch, an air pump pressure switch, a PLC control module and a control coil of a contactor, the air pump starting switch and the air pump pressure switch are respectively connected with the input end of the PLC control module correspondingly, and the output end of the PLC control module is connected with the control coil through an amplifier; the starting branch circuit comprises a main contact of the contactor and an air pump, and the main contact is connected in series with the air pump and then connected between a positive pole and a negative pole of a power supply; the power of contactor is less than or equal to 22kW, the mains voltage of control coil is direct current 110V, the rated current of main contact is direct current 250A, the rated voltage of main contact is direct current 110V.
2. The train wind pump startup circuit of claim 1, wherein: the starting branch circuit further comprises a protector, and the protector is connected with the main contact in parallel and used for protecting the air pump.
3. The train wind pump startup circuit of claim 2, wherein: the starting branch further comprises a fuse connected between the positive power supply terminal and the main contact.
4. The train air pump starting circuit according to claim 2 or 3, wherein: the contactor is a contactor with the model number S156K-33-110V.
5. The train wind pump startup circuit of claim 4, wherein: the protector is a protector with a model PRS-80C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121244376.9U CN215890407U (en) | 2021-06-04 | 2021-06-04 | Train air pump starting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121244376.9U CN215890407U (en) | 2021-06-04 | 2021-06-04 | Train air pump starting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215890407U true CN215890407U (en) | 2022-02-22 |
Family
ID=80561020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121244376.9U Active CN215890407U (en) | 2021-06-04 | 2021-06-04 | Train air pump starting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215890407U (en) |
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2021
- 2021-06-04 CN CN202121244376.9U patent/CN215890407U/en active Active
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