CN219915858U

CN219915858U - Contactor testing device

Info

Publication number: CN219915858U
Application number: CN202321326490.5U
Authority: CN
Inventors: 徐文彬; 钱冰; 曹毅峰; 胡荣慧; 邢俊俊; 夏庆峰; 施云杰
Original assignee: Shanghai Shentong Changke Rail Transit Vehicle Co ltd
Current assignee: Shanghai Shentong Changke Rail Transit Vehicle Co ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-10-27
Anticipated expiration: 2033-05-29

Abstract

The utility model provides a contactor testing device, comprising: the contactor testing device comprises a power supply module, a testing module and a contactor to be tested access module, wherein the power supply module supplies power to the contactor testing device and the contactor to be tested; the contactor access module under test is connected with the test module to be connected with the contactor under test, and the test module comprises: the test system comprises a test function selection module, a voltage and current display module, a counting module and an external test port module, wherein the external test port module comprises a plurality of test points which are respectively connected with external test equipment. The utility model can carry out pull-in voltage, pull-in current and cycle test on the common contactor. In the process of testing by using the utility model, only a power supply and a tested object are needed, the operation is simple, the operability is strong, and the working efficiency and the accuracy of the detection result are greatly improved.

Description

Contactor testing device

Technical Field

The utility model relates to the field of electricity, in particular to a contactor testing device.

Background

Contactors are used to control the switching and closing of electrical circuits, are widely used in electrical systems, and have a relatively high frequency of failure during use. Therefore, it is necessary to periodically detect the contactor to ensure the normal operation of the circuit and the safety and stability of the equipment, preventing the damage of the equipment and the occurrence of accidents. How to diagnose and remove faults quickly and accurately is the key to whether the equipment can operate properly.

Existing relay testing devices generally include: control module and test module. By supplying power to the coil of the relay to be tested, the relay to be tested is controlled to suck and drop, and various parameters such as the contact resistance of the main contact and the auxiliary contact of the relay to be tested, the measured time interval and the like are detected. However, existing relay testing devices still have problems including:

1. in the actual fault contactor detection process, a fault state cannot be detected by single detection of a contactor with frequent faults, and the faults can be detected only by repeated cyclic tests.

2. The existing contactors are of a plurality of types, the auxiliary contacts are different in number, and different contactors are required to be connected in different cable combinations. Therefore, there is a need for a testing device that is highly scalable and flexibly adaptable to different contactors.

The present utility model aims to solve the above-mentioned problems.

Disclosure of Invention

In order to solve the above problems, the present utility model provides a contactor testing device, which can perform pull-in voltage, pull-in current and cycle test on a common contactor. In the process of testing by using the utility model, only a power supply and a tested object are needed, the operation is simple, the operability is strong, and the working efficiency and the accuracy of the detection result are greatly improved.

The utility model provides a contactor testing device, comprising: the power module supplies power to the contactor testing device and the contactor to be tested, the testing module is connected with the power module, the contactor to be tested is connected with the testing module, the contactor to be tested is connected with the contactor to be tested, and the testing module comprises:

the test function selection module is connected with the power supply module to select test parameters to be acquired of the contactor to be tested;

the voltage and current display module is connected with the test function selection module and used for detecting and displaying the control voltage and the control current of the tested contactor;

the counting module is connected with the power supply module, the counting module is connected with the main contact or the auxiliary contact of the contactor to be tested, the counting module comprises a plurality of counting units and a circulating unit, the plurality of counting units are respectively connected with the main contact or the auxiliary contact of the contactor to be tested so as to monitor the action times of the main contact or the auxiliary contact of the contactor, the circulating unit is respectively connected with the plurality of counting units, and the circulating unit is matched with the counting module to test the circulating performance of the contactor to be tested by setting the running time of the contactor to be tested;

the external test port module is connected with the counting module and comprises a plurality of test points which are respectively connected with external test equipment.

In one embodiment, the power supply module comprises a power supply display module and a power supply switch module, wherein the power supply switch module controls the on or off of a power supply, the power supply comprises an input power supply, an output power supply and a control power supply, and the output power supply and the control power supply are respectively connected with the input power supply;

the power supply display module comprises an input power supply indicator lamp, an output power supply indicator lamp and a control power supply indicator lamp, so that whether the voltage input of the input power supply, the output power supply and the control power supply is normal or not is displayed, the input power supply indicator lamp is connected with the input power supply, the output power supply indicator lamp is connected with the output power supply, and the control power supply indicator lamp is connected with the control power supply.

In one embodiment, the input power supply has a voltage of 220V, the output power supply has a voltage of 110V, and the control power supply has a voltage of 24V.

In one embodiment, the contactor access module under test includes an aerial plug through which the contactor under test is connected to the contactor test device.

In one embodiment, the test function selecting module includes a normal-actuation start switch, a point-actuation start switch, and a count start switch, where the actuation start switch, the point-actuation start switch, and the count start switch are respectively connected to the power module, and any start switch is turned on to select a test parameter that needs to be collected by the contactor to be tested.

In one embodiment, the test function module further includes a first indicator light, a second indicator light, and a third indicator light, where the first indicator light is connected to the normally-on start switch, and is turned on when the normally-on start switch is turned on, the second indicator light is connected to the point-on start switch, and is turned on when the point-on start switch is turned on, and the third indicator light is connected to the count start switch, and is turned on when the count start switch is turned on.

In one embodiment, the test function module further includes a trigger switch, the trigger switch is connected to the normally-closed start switch, the point-operated start switch, and the count start switch, and any one of the normally-closed start switch, the point-operated start switch, and the count start switch is turned on simultaneously with the trigger switch, so as to select a test parameter to be collected by the tested contactor.

In one embodiment, the voltmeter and ammeter display module includes a voltmeter, a voltmeter display, an ammeter and an ammeter display, wherein the voltmeter and the ammeter are respectively connected with the contactor to be tested, the voltmeter display is connected with the voltmeter to display detected voltage values, and the ammeter display is connected with the ammeter to display detected current values.

In one embodiment, the external test device includes: oscilloscopes and electric bridges.

In one embodiment, the counting unit is a counting relay and the circulating unit is a circulating relay.

The utility model has the following beneficial effects:

the utility model provides a novel contactor testing device which can detect faults at a single time even if accidental faults are encountered. The contactor testing device is strong in expansibility and can be flexibly adapted to different contactors. The test device is particularly suitable for common contactors with direct current below 110V to carry out pull-in voltage, current and cycle test. The contactor testing device provided by the utility model has the advantages that the structure is simple, the use is convenient, the accurate testing parameters of the tested relay can be quickly obtained, the working intensity of the maintainer is greatly reduced, and the working efficiency of the maintainer is improved.

Drawings

FIG. 1 is a schematic view of a contactor testing apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic circuit diagram of a contactor testing apparatus according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a partial circuit of a power module in a contactor testing apparatus according to an embodiment of the utility model;

FIG. 4 is a schematic diagram of a partial circuit of a voltage and current display module in a contactor test apparatus according to an embodiment of the utility model;

FIG. 5 is a schematic diagram of a partial circuit of a test function selection module in a contactor test apparatus according to an embodiment of the utility model;

FIG. 6 is a schematic diagram of a partial circuit of a counting module and a cyclic test module in a contactor test apparatus according to an embodiment of the utility model; and

fig. 7 is a schematic diagram of a partial circuit of an external test port module in a contactor test apparatus according to an embodiment of the utility model.

Reference numerals

1. A power module; 11. a power switch module; 12. inputting a power supply indicator lamp; 13. outputting a power supply indicator lamp; 14. controlling a power indicator lamp; 2. a test module; 21. a test function selection module; 211. a normally-closed starting switch; 212. a point-operated suction starting switch; 213. a count start switch; 214. a first indicator light; 215. a second indicator light; 216. a third indicator light; 217. triggering a switch; 22. a voltage current display module; 221. a current display; 222. a voltage display; 23. a counting module; 231. a first counting unit; 232. a second counting unit; 233. a third counting unit; 234. a fourth counting unit; 235. a fifth counting unit; 236. a sixth counting unit; 237. a seventh counting unit; 24. a circulation unit; 25. externally connecting a test port module; 251. a test point; 3. aviation plug.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 and 2, the present utility model provides a contactor testing apparatus, comprising: the device comprises a power supply module 1, a test module 2 and a contactor access module to be tested. The power module 1 supplies power to the contactor test device and the contactor under test. The test module 2 is connected with the power module 1, the contactor access module to be tested is connected with the test module 2 in parallel, and the contactor access module to be tested is connected with the contactor to be tested. In this embodiment, preferably, the tested contactor access module includes an aviation plug 3, and the tested contactor is connected to the contactor test device through the aviation plug 3.

Wherein fig. 2 is a circuit schematic diagram of the contactor testing device. Fig. 2 only shows the connection relationship of the respective modules in the circuit of the contactor test apparatus due to the dimension of the drawing, and the specific circuit diagram of the respective modules is shown in detail in the following fig. 3 to 7.

Further, the power module 1 includes a power display module and a power switch module 11, and the power switch module 11 controls on or off of the power of the contactor test device. The power supply comprises an input power supply, an output power supply and a control power supply, and the output power supply and the control power supply are respectively connected with the input power supply in parallel. The power display module includes an input power indicator lamp 12, an output power indicator lamp 13, and a control power indicator lamp 14 to display whether voltage inputs of the input power, the output power, and the control power are normal. The input power indicator lamp 12 is connected with an input power supply, the output power indicator lamp 13 is connected with an output power supply, the control power indicator lamp 14 is connected with a control power supply, and whether the corresponding voltage input is normal can be intuitively observed through the input power indicator lamp 12, the output power indicator lamp 13 and the control power indicator lamp 14. As shown in fig. 3, the light emitting diodes D10, D9 and D8 respectively represent an input power indicator lamp 12, an output power indicator lamp 13 and a control power indicator lamp 14, wherein R1 to R3 respectively represent protection resistors of each circuit, and M represents a heat dissipation component. The voltage of the input power supply is 220V, the voltage of the output power supply is 110V, and the voltage of the control power supply is 24V. The control power supply supplies power to the counting module, the external test port module and the tested contactor access module, and the output power supply supplies power to the test function selection module and the voltage and current display module. In this embodiment, the different input voltage values are preferably indicated by different colored indicator lights. The red, green and yellow lamps are respectively 220V input power supply indicator lamps 12, 110V output power supply indicator lamps 13 and 24V control power supply indicator lamps 14, and whether the voltage input is normal is indicated by lighting the lamps. The red light indicates that the alternating current 220V voltage input is normal, the green light indicates that the 110V voltage input is normal, and the yellow light indicates that the 24V voltage input is normal.

The test module 2 includes: the test function selection module 21, the voltage and current display module 22, the counting module 23 and the external test port module 25.

The test function selection module 21 is connected with the power module 1 to select test parameters of the contactor to be tested, which need to be collected.

The voltage and current display module 22 is connected with the test function selection module 21 and detects and displays the pull-in voltage and pull-in current of the contactor to be tested. In this embodiment, the voltmeter and ammeter display module 22 preferably includes a voltmeter, a voltmeter display 222, an ammeter and ammeter display 221, where the voltmeter and ammeter are connected to the contactor to be tested, and the voltmeter display 222 and ammeter display 221 are respectively connected to the voltmeter and ammeter, and respectively display the voltage value and the current value detected by the voltmeter and ammeter, see fig. 4. In fig. 4, JK is a relay, S41 and S42 are switches of the relay JK, S43 to S45 are counting switches, S46 is a test switch of a resistor, RP1 and RP2 are resistance probes, and D4 to D5 are diodes.

The counting module 23 is connected with the power module 1, and the counting module 23 is connected with a main contact or an auxiliary contact of the contactor to be tested. The counting module 23 includes a plurality of counting units and a circulation unit 24. The plurality of counting units are respectively connected with the power supply module 1. The counting units are respectively connected with the main contact or the auxiliary contact of the contactor to be tested so as to monitor the action times of the main contact or the auxiliary contact of the contactor and realize the function of monitoring and tracking the contacts. The counting unit can realize counting accumulation, measure the suction times and test consistency by comparing data. The circulation unit 24 is connected with a plurality of counting units respectively, and the circulation unit 24 is used for testing the circulation performance of the contactor by setting the running time of the contactor and matching with the counting units. In this embodiment, the counting module is preferably provided with seven counting units 231 to 237 and one circulation unit 24, see fig. 1 and 6. In fig. 6, S61 is a switch for controlling the counting unit, S62 is a switch for closing the measurement waveform, S63 is a click switch, and S64 is used for controlling the access of the external test port module 25. Any one of the counting units 231 to 237 can realize the function of monitoring the main contact, and the other six can track the auxiliary contacts. In this embodiment, the counting unit is preferably a counting relay, and the circulating unit is a circulating relay.

The external test port module 25 is connected with the counting module 23, the external test port module 25 includes a plurality of test points 251, and the test points 251 are respectively connected with external test equipment, see fig. 1, 2 and 7. Each test point is provided with a relay, as shown in FIG. 7, J1-J7 are relays, AMM 1-AMM 8, JK 1-JK 7 and AMJ 1-AMJ 8 are switches of the relays respectively, and D11-D13 are diodes. In this embodiment, preferably, the external test device includes: oscilloscopes and electric bridges. The external test equipment is matched with the relays to test parameters such as contact resistance, contact suction time and the like. For example, the contact condition of each contact is judged by the waveform measured by an oscilloscope, and the resistance of the contact is tested by a bridge, see fig. 7.

Further, the test function selecting module 21 includes a normal-actuation start switch 211, a point-actuation start switch 212, and a count start switch 213, where the normal-actuation start switch 211, the point-actuation start switch 212, and the count start switch 213 are respectively connected to the power module 1, and any one of the start switches is turned on to select a test parameter to be collected by the contactor to be tested, see fig. 1 and 5. After the normally-closed start switch 211 is opened, the normally-closed mode is entered, and the coil resistance of the contactor can be calculated by the voltage and current measured in the voltage and current display module 22. After the click actuation start switch 212 is turned on, the click actuation mode is entered. The inching suction module is used for adjusting the contact suction area of the contactor, finding the optimal solution and preparing for the counting module. After the count start switch 213 is turned on, a count mode is entered, at which time each contact condition can be detected by a waveform by cooperation with an oscilloscope.

Further, the test function selection module 21 further includes a first indicator light 214, a second indicator light 215, and a third indicator light 216, see fig. 1 and 5. The first indicator lamp 214 is connected to the normal-operation start switch 211, and is turned on when the normal-operation start switch 211 is turned on, the second indicator lamp 215 is connected to the start-operation start switch 212, and is turned on when the start-operation start switch 212 is turned on, and the third indicator lamp 216 is connected to the count start switch 213, and is turned on when the count start switch 213 is turned on. D1 to D3 in fig. 5 are a first indicator lamp 214, a second indicator lamp 215, and a third indicator lamp 216. AM, AMM and AMJ in fig. 5 are relays, corresponding to three start switches, respectively.

Still further, the test function module also includes a trigger switch 217, see FIG. 1. The trigger switch 217 is connected to the normal suction start switch 211, the click suction start switch 212, and the count start switch 213, respectively. Any one of the normally-on start switch 211, the point-on start switch 212 and the count start switch 213 is turned on simultaneously with the trigger switch 217 to select the test parameters to be collected of the contactor under test.

The utility model has the following beneficial effects:

It should be noted that, unless explicitly stated or limited otherwise, the term "coupled" and the like as used in the description of the present utility model should be interpreted broadly, and for example, the coupling may be a fixed coupling, a removable coupling, or an integral coupling; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements, and the specific meaning of the two elements can be understood by a person skilled in the art according to specific situations.

The above embodiments are merely further illustrative of the present utility model and are not intended to limit the present utility model in any way, and various other embodiments are possible. Various modifications and variations may be made by those skilled in the art in light of the present disclosure without departing from the spirit and scope of the present disclosure, and such modifications and variations are intended to fall within the scope of the present disclosure.

Claims

1. A contactor testing apparatus, comprising: the power module supplies power to the contactor testing device and the contactor to be tested, the testing module is connected with the power module, the contactor to be tested is connected with the testing module, the contactor to be tested is connected with the contactor to be tested, and the testing module comprises:

2. The contactor testing device according to claim 1, wherein the power supply module includes a power supply display module and a power supply switch module, the power supply switch module controls on or off of a power supply, the power supply includes an input power supply, an output power supply, and a control power supply, the output power supply and the control power supply are respectively connected with the input power supply;

3. The contactor testing device according to claim 2, wherein the input power source has a voltage of 220V, the output power source has a voltage of 110V, and the control power source has a voltage of 24V.

4. The contactor testing device of claim 1, wherein the contactor access module under test comprises an aerial plug through which the contactor under test is connected to the contactor testing device.

5. The contactor testing device according to claim 1, wherein the test function selecting module includes a normally-on start switch, a point-actuation start switch, and a count start switch, the on start switch, the point-actuation start switch, and the count start switch are respectively connected to the power module, and any start switch is turned on to select a test parameter to be collected by the contactor under test.

6. The contactor testing device according to claim 5, wherein the test function module further comprises a first indicator light, a second indicator light, and a third indicator light, the first indicator light is connected to the normally-on start switch, and is turned on when the normally-on start switch is turned on, the second indicator light is connected to the point-on start switch, and is turned on when the point-on start switch is turned on, and the third indicator light is connected to the count start switch, and is turned on when the count start switch is turned on.

7. The contactor testing device according to claim 6, wherein the testing function module further comprises a trigger switch, the trigger switch is connected to the normally-closed start switch, the point-actuation start switch and the count start switch, respectively, and any one of the normally-closed start switch, the point-actuation start switch and the count start switch is turned on simultaneously with the trigger switch to select a test parameter to be collected by the contactor under test.

8. The contactor test apparatus according to claim 1, wherein the voltmeter and ammeter display module includes a voltmeter, a voltmeter display, an ammeter, and an ammeter display, the voltmeter and the ammeter are respectively connected to the contactor under test, the voltmeter display is connected to the voltmeter to display the detected voltage value, and the ammeter display is connected to the ammeter to display the detected current value.

9. The contactor testing apparatus according to claim 1, wherein the external testing device comprises: oscilloscopes and electric bridges.

10. The contactor testing device according to claim 1, wherein the counting unit is a counting relay and the circulating unit is a circulating relay.