CN219302613U - Contactor motion performance detecting system - Google Patents
Contactor motion performance detecting system Download PDFInfo
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- CN219302613U CN219302613U CN202223337771.9U CN202223337771U CN219302613U CN 219302613 U CN219302613 U CN 219302613U CN 202223337771 U CN202223337771 U CN 202223337771U CN 219302613 U CN219302613 U CN 219302613U
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- contactor
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Abstract
The utility model provides a contactor action performance detection system which comprises a central control module, an adjustable power supply module, an intermediate relay module, a low-resistance acquisition module, an oscillographic card and an input and display module, wherein the central control module is connected with the adjustable power supply module; the adjustable power supply module is connected with the coil of the contactor through the intermediate relay module; the oscillographic card is used for recording the voltage value and the current value of a loop between the intermediate relay module and the contactor coil; the two ends of the main contact and the auxiliary contact of the contactor are respectively connected with the central control module, and the on-off states of the main contact and the auxiliary contact are respectively detected; the two ends of the main contact and the auxiliary contact of the contactor are respectively connected with the low-resistance acquisition module; the adjustable power supply module, the intermediate relay module, the oscillographic card and the low-resistance acquisition module are communicated with the central control module; the input and display module is connected with the central control module and is used for sending test instructions and displaying test data. The system can comprehensively detect whether the action performance of the contactor is normal and reliable, and can rapidly judge whether the contactor fails.
Description
Technical Field
The utility model relates to the technical field of contactor detection, in particular to a contactor action performance detection system.
Background
The contactor is a common electrical equipment in railway locomotive, and has the main functions of controlling the equipment of a high-current switch by using small-current on-off and isolating two types of power supplies. The contactor is widely applied to railway locomotives, the running state of the contactor has a great influence on the safety of the railway locomotives, and the application scenes of the contactor comprise a locomotive low-voltage power distribution cabinet, an auxiliary transformer cabinet, an auxiliary filter cabinet, a locomotive converter cabinet and the like. Taking an auxiliary transformer cabinet and an auxiliary filter cabinet loop contactor as examples, if the contactors in the auxiliary transformer cabinet and the auxiliary filter cabinet act abnormally, the railway locomotive cannot execute auxiliary loop power supply action, so that the railway locomotive machine breaking accident can be caused.
The possible faults of the contactor include unreliable opening and closing actions, poor contact of the contact after the contact is sucked, and the like, and railway locomotive operation and maintenance personnel lack detection equipment for detecting the state of the contactor, so that the state judgment of the contactor can only be judged by the operation condition of the contactor on a display screen of a cab.
Therefore, there is a need for a contactor detection device that is suitable for detecting the state of a railway locomotive contactor and has high detection efficiency, so as to solve the problems existing in the prior art.
Disclosure of Invention
The utility model aims to provide a contactor action performance detection system, which aims to solve the problems of contactor state detection in the prior art, and the specific technical scheme is as follows:
the contactor action performance detection system comprises a central control module, an adjustable power supply module, an intermediate relay module, a low-resistance acquisition module, an oscillographic card and an input and display module;
the adjustable power supply module is connected with the coil of the contactor through the intermediate relay module, and the adjustable power supply module and the intermediate relay module are communicated with the central control module;
the oscillograph card is used for recording a voltage value and a current value of a loop between the intermediate relay module and the contactor coil, and is communicated with the central control module;
the two ends of the main contact and the auxiliary contact of the contactor are respectively connected with the central control module, and the on-off states of the main contact and the auxiliary contact are respectively detected;
the two ends of the main contact and the auxiliary contact of the contactor are respectively connected with the low-resistance acquisition module, and the low-resistance acquisition module is communicated with the central control module;
the input and display module is connected with the central control module and is used for sending test instructions and displaying test data.
In the above technical scheme, preferably, a current sensor and a voltage sensor are arranged on a loop between the intermediate relay module and the coil of the contactor, the current sensor is used for collecting a current value between the intermediate relay module and the coil and transmitting the current value to the oscillographic card, and the voltage sensor is used for collecting a voltage value between the intermediate relay module and the coil and transmitting the voltage value to the oscillographic card.
The technical scheme is preferable, and the system further comprises a controller power supply, wherein the controller power supply is used for supplying power to the central control module.
In the above technical solution, preferably, the adjustable power module is an adjustable dc power supply.
In the above technical scheme, preferably, the central control module is a PLC controller or a single chip microcomputer.
In the above technical scheme, preferably, the frequency of collecting the resistance values of the main contact and the auxiliary contact by the low-resistance collecting module is greater than the frequency of the sucking and breaking signals of the contactor controlled by the central control module.
In the above technical solution, preferably, the input and display module is a key switch and a touch screen.
The technical scheme of the utility model has the following beneficial effects:
the contactor function detection system can detect the pull-in voltage value, the pull-out voltage value, the pull-in current value, the pull-out current value, the pull-in time, the pull-out time, the main contact resistance, the auxiliary contact resistance, the action states of the main contact and the auxiliary contact, and the voltage and current waveforms of the contactor coil in the pull-in and pull-off processes. The utility model can comprehensively detect whether the action performance of the contactor is normal and reliable, can rapidly judge whether the detected contactor is faulty, saves manpower and maintenance detection time, and increases the safety and reliability of railway locomotive equipment.
In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic circuit diagram of a detection system;
the intelligent control system comprises a controller power supply 1, a key switch and a touch screen, a low-resistance acquisition instrument 3, a PLC controller 4, an adjustable direct-current power supply 5, an intermediate relay module 6, a current sensor 7, a voltage sensor 8, a wave indication card 9, a wave indication card 10 and a contactor.
Detailed Description
The present utility model will be described more fully hereinafter in order to facilitate an understanding of the present utility model, and preferred embodiments of the present utility model are set forth. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Example 1:
referring to fig. 1, a contactor motion performance detection system comprises a central control module, an adjustable power module, an intermediate relay module 6, a low-resistance acquisition module, an oscillographic card 9 and an input and display module;
the input and display module is connected with the central control module through the Ethernet communication port and is used for sending a test instruction to the central control module and displaying test data of the contactor.
Furthermore, the adjustable power supply module is connected with the coil of the detected contactor 10 through the intermediate relay module 6, and the adjustable power supply module and the intermediate relay module are communicated with the central control module; specifically, the output end of the adjustable power supply module is connected with the input port of the intermediate relay module through an electric wire, and the output port of the intermediate relay module is connected with the input interface of the contactor coil through an electric wire, namely, the coil of the contactor is powered through the adjustable power supply module; the adjustable power module and the central control module are communicated through an Ethernet communication protocol, so that the output voltage of the adjustable power module is controlled (by the central control module according to a test instruction), and the requirements of contactor coil action test under different voltage grades are met; the central control module controls the on-off action of the intermediate relay module through the switching value output port, and realizes the control of the on-off of a circuit between the adjustable power supply module and the contactor coil.
Further, the oscillograph card 9 is used for recording a voltage value and a current value of a loop between the intermediate relay module 6 and the coil of the contactor 10, and the oscillograph card 9 is communicated with the central control module; specifically, a current sensor 7 and a voltage sensor 8 are arranged on a loop between the intermediate relay module 6 and the coil of the contactor, the current sensor 7 is used for collecting a current value between the intermediate relay module and the coil and transmitting the current value to the oscillograph card 9, and the voltage sensor 8 is used for collecting a voltage value between the intermediate relay module and the coil and transmitting the voltage value to the oscillograph card 9. Further, the current sensor is connected in series in a loop between the intermediate relay module and the contactor coil, and the voltage sensor is connected in parallel in the loop between the intermediate relay module and the contactor coil.
The oscillographic card transmits the acquired voltage value and current value to the central control module, and displays the voltage waveform and current waveform through the input and display module. Through oscillographic card, voltage sensor and current sensor, can record voltage value, current value and wave form when the contactor is closed and disconnected in the testing process, can judge whether contactor coil loop state is normal.
Referring to fig. 1, two ends of the main contact and the auxiliary contact of the contactor 10 are respectively connected with a central control module, and the on-off states of the main contact and the auxiliary contact are respectively detected, namely, the main contact and the auxiliary contact are detected to be in an on-off state. Further, two ends of the main contact and the auxiliary contact of the contactor 10 are respectively connected with a low-resistance acquisition module, and the low-resistance acquisition module is communicated with a central control module; the low-resistance acquisition module is used for recording the resistance values of the main contact and the auxiliary contact when the contactor is in suction or disconnection. Specifically, the on-off states and the resistance values of the main contact and the auxiliary contact can be displayed through the input and display module.
The low-resistance acquisition module acquires and records resistance values, transmits resistance value data to the central control module through an Ethernet communication protocol, judges whether the acquired resistance values of each pair of auxiliary contacts and main contacts in the suction process are within a standard contact resistance range of the contactor, if the acquired resistance values are within the effective contact resistance standard range, the low-resistance acquisition module is marked as effective contact-on, calculates effective contact-on times of suction of each pair of main contacts and auxiliary contacts in the process of transmitting total on-off pulse by a group of test instructions, and judges whether the contactor works normally or not through resistance measurement values of each main contact and auxiliary contact.
Further, the contactor motion performance detection system further comprises a controller power supply 1, wherein the controller power supply 1 is used for supplying power to the central control module.
Preferably, the adjustable power supply module is an adjustable direct current power supply 5.
Preferably, the central control module is a PLC controller 4; in addition to the use of a PLC controller, it is also possible for the person skilled in the art to use a single-chip microcomputer for the control. In this embodiment, a PLC controller is preferable.
Preferably, the frequency of the low-resistance acquisition module for acquiring the resistance values of the main contact and the auxiliary contact is larger than the frequency of the suction and disconnection signals of the contactor controlled by the central control module; the problem that the resistance value can not be acquired in the sucking and disconnecting processes of the contactor because the resistance value acquisition frequency is too small can be avoided.
Further preferably, the low-resistance acquisition module is a low-resistance acquisition instrument 3.
The input and display module is a key switch and a touch screen 2. The key switch and the touch screen 2 can set the suction time, the release time, the suction disconnection times of the contactor, the lower voltage limit and the upper voltage limit of the adjustable direct-current voltage source and the voltage rising and falling rate.
All the parts not described in detail in the embodiment are the prior art, and the logic control related to the detection system in the embodiment is the basic common knowledge of the person skilled in the art; the control program can be obtained by reasonable logic analysis by adopting the control language of the PLC according to the functional requirement of the detection system by a person in the field. Meanwhile, based on the detection system, the test instruction of the system can be adjusted according to actual requirements by a person in the field, and the detection system can be realized by adjusting a control program.
The technical scheme of the utility model has the following effects:
the contactor function detection system of this embodiment can detect the actuation voltage value, the release voltage value, the actuation current value, the release current value, the actuation time (refer to the time difference between the PLC controller sending a coil actuation command to the PLC controller detecting the closing of each main contact and auxiliary contact of the contactor), the release time (refer to the time difference between the PLC controller sending a coil release command to the PLC controller detecting the opening of each main contact and auxiliary contact of the contactor), the main contact resistance, the auxiliary contact resistance, the actuation states of the main contact and the auxiliary contact, and the voltage and current waveforms of the contactor coil during the actuation and opening process. The detection system can comprehensively detect whether the action function of the contactor and the states of the main contact and the auxiliary contact are normal, can rapidly judge whether the detected contactor fails, saves labor and maintenance detection time, and increases the reliability and safety of railway locomotive equipment.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The contactor action performance detection system is characterized by comprising a central control module, an adjustable power supply module, an intermediate relay module (6), a low-resistance acquisition module, an oscillographic card (9) and an input and display module;
the adjustable power supply module is connected with the coil of the contactor (10) through the intermediate relay module (6), and the adjustable power supply module and the intermediate relay module are communicated with the central control module;
the oscillometric card (9) is used for recording a voltage value and a current value of a loop between the intermediate relay module (6) and a coil of the contactor (10), and the oscillometric card (9) is communicated with the central control module;
the two ends of the main contact and the auxiliary contact of the contactor (10) are respectively connected with the central control module, and the on-off states of the main contact and the auxiliary contact are respectively detected;
the two ends of the main contact and the auxiliary contact of the contactor (10) are respectively connected with the low-resistance acquisition module, and the low-resistance acquisition module is communicated with the central control module;
the input and display module is connected with the central control module and is used for sending test instructions and displaying test data.
2. The contactor motion performance detection system according to claim 1, wherein a current sensor (7) and a voltage sensor (8) are arranged on a loop between the intermediate relay module (6) and the contactor coil, the current sensor (7) is used for collecting a current value between the intermediate relay module and the coil and transmitting the current value to the oscillometric card (9), and the voltage sensor (8) is used for collecting a voltage value between the intermediate relay module and the coil and transmitting the voltage value to the oscillometric card (9).
3. The contactor actuation performance detection system according to claim 1, further comprising a controller power supply (1), the controller power supply (1) being configured to power the central control module.
4. The contactor actuation performance detection system according to claim 1, wherein the adjustable power supply module is an adjustable dc power supply (5).
5. The system for detecting the motion performance of the contactor according to claim 1, wherein the central control module is a PLC controller (4) or a single chip microcomputer.
6. The system for detecting the motion performance of the contactor according to claim 1, wherein the frequency of the low-resistance acquisition module for acquiring the resistance values of the main contact and the auxiliary contact is larger than the frequency of the signal for controlling the contactor to be closed or opened by the central control module.
7. The system according to claim 1, wherein the input and display module is a key switch and a touch screen (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223337771.9U CN219302613U (en) | 2022-12-12 | 2022-12-12 | Contactor motion performance detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223337771.9U CN219302613U (en) | 2022-12-12 | 2022-12-12 | Contactor motion performance detecting system |
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| Publication Number | Publication Date |
|---|---|
| CN219302613U true CN219302613U (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223337771.9U Active CN219302613U (en) | 2022-12-12 | 2022-12-12 | Contactor motion performance detecting system |
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| CN (1) | CN219302613U (en) |
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- 2022-12-12 CN CN202223337771.9U patent/CN219302613U/en active Active
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