CN216526180U

CN216526180U - Self-adaptive relay detection device

Info

Publication number: CN216526180U
Application number: CN202122756596.6U
Authority: CN
Inventors: 王佳颖; 罗荣民; 周迪奋; 罗进城; 王新蕾; 陶小红
Original assignee: Shanghai Dynact Electromechanical Equipment Co ltd
Current assignee: Shanghai Dynact Electromechanical Equipment Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-05-13
Anticipated expiration: 2031-11-11

Abstract

The utility model provides a self-adaptive relay detection device which comprises a first detection module, a second detection module and a plurality of relay sockets, wherein the relay sockets are connected in the first detection module and the second detection module; the first detection module comprises an adjustable direct-current power supply, a first current transmitter and a first voltage transmitter which are connected in series to form a loop; the second detection module comprises a fixed direct-current power supply, a second voltage transmitter, a current-limiting resistor and a contact detection module which are connected in series to form a loop. The self-adaptive relay detection device can adaptively and rapidly detect the basic parameters of the relay, only the relay needs to be plugged in and pulled out in the whole detection process, the device can automatically detect and record the model and the test result of the relay, the performance detection efficiency of the batch relays is obviously improved, and the device is particularly suitable for conventional maintenance of large-scale factory automation equipment.

Description

Self-adaptive relay detection device

Technical Field

The utility model relates to the technical field of electronic equipment detection, in particular to a self-adaptive relay detection device.

Background

The application of a large number of relay elements in the technical field of electrical and control, especially in application places with high automation degree such as large-scale factories, power plants, chemical engineering and the like, the application types and the quantity of the relays are large, and the regular inspection of the relay performance is the basis for ensuring the safe work of automatic control equipment. The relay protection checking and testing device is generally used for carrying out performance testing and checking on the relay, and the instrument generally comprises a single chip microcomputer, has multi-path voltage and current output and sampling, has multi-path switching value input and output and accurate time measurement, and has wave recording and synchronous phasor measurement functions in some cases.

Although the existing relay protection verification and test device has strong functions, high accuracy and wide application range, the existing relay protection verification and test device needs to be reconnected when corresponding to each relay is verified. In automation equipment of a large-scale factory, a plurality of small relays are large in quantity and variety, the overhaul period is short, and the existing instruments are low in efficiency when used for detecting the relays of the factory with large batch, short overhaul time and no need of accurately measuring parameters.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide an adaptive relay testing device, which solves the problem of long effective rate of testing time of the relay with large batch size and without accurate parameter measurement in the prior art.

In order to solve the technical problem, the utility model is realized as follows: a self-adaptive relay detection device comprises a first detection module, a second detection module and a plurality of relay sockets, wherein the relay sockets are connected to the first detection module and the second detection module; the first detection module comprises an adjustable direct-current power supply, a first current transmitter and a first voltage transmitter which are connected in series to form a loop; the second detection module includes fixed DC power supply, second voltage transmitter, current-limiting resistance, the contact detection module of establishing ties and forming the return circuit, the contact detection module is including the normally closed contact detecting element and the normally open contact detecting element that connect in parallel mutually, normally closed contact detecting element is including the normally closed contact wiring group and the second current transmitter that establish ties mutually, normally open contact detecting element is including the normally open contact wiring group and the third current transmitter that establish ties mutually.

The system further comprises a central controller, a human-computer interface and an analog input/output module, wherein the human-computer interface and the analog input/output module are connected with the central controller, and the central controller is connected with the fixed direct-current power supply; the first current transmitter, the first voltage transmitter, the second current transmitter, the third current transmitter and the second voltage transmitter are respectively connected to the central controller through the analog quantity input and output module.

And the digital quantity input and output module is respectively connected with the central controller, the logic signal of the first detection module and the logic signal of the second detection module.

Furthermore, the digital quantity input and output module is connected with an alarm.

Furthermore, the digital input and output module is connected with an alarm lamp.

Furthermore, a socket selection switch is connected to the relay socket.

Furthermore, a corresponding socket indicator lamp is connected in series on the relay socket.

Further, alternating current isolation transformers are respectively connected in series between the fixed direct current power supply and the adjustable direct current power supply and the power grid.

As described above, the self-adaptive relay detection device can adaptively and rapidly detect the basic parameters of the relay, only the relay needs to be plugged in and pulled out in the whole detection process, the device can automatically detect and record the relay model and the test result, the performance detection efficiency of the batch relays is obviously improved, and the device is particularly suitable for conventional maintenance of large-scale factory automation equipment.

Drawings

Fig. 1 is a schematic structural diagram of an adaptive relay detection apparatus according to an embodiment of the present invention;

fig. 2 is a timing diagram illustrating a measurement waveform of an adaptive relay testing apparatus according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

Referring to fig. 1 to 2, the present invention provides an adaptive relay detection apparatus, which includes a first detection module, a second detection module, and four relay sockets, wherein the relay sockets are connected to the first detection module and the second detection module. The four relay sockets are respectively a relay socket K1, a relay socket K2, a relay socket K3 and a relay socket K4. The relay socket is connected with a socket selection switch SA for selecting which relay socket is tested. Corresponding socket indicator lamps are connected in series on the relay socket, and the socket indicator lamps are a socket indicator lamp L1, a socket indicator lamp L2, a socket indicator lamp L3 and a socket indicator lamp L4 respectively. When a certain relay socket is selected, the corresponding socket indicator lamp is turned on.

The first detection module includes an adjustable DC power supply DC2, a first current transducer I1, and a first voltage transducer U1 connected in series to form a loop. The second detection module includes fixed DC power supply DC1, second voltage transmitter U2, current-limiting resistance R1, contact detection module that establishes ties and form the return circuit, contact detection module is including the normally closed contact detecting element and the normally open contact detecting element that connect in parallel mutually, the normally closed contact detecting element is including the normally closed contact wiring group and the second current transmitter I21 that establish ties mutually, the normally open contact detecting element is including the normally open contact wiring group and the third current transmitter I22 that establish ties mutually.

The device also comprises a Central Processing Unit (CPU), a human-computer interface and an analog input/output module, wherein the human-computer interface and the analog input/output module are connected with the CPU, and the CPU is connected with a fixed direct current power supply DC 2. The first current transmitter I1, the first voltage transmitter U1, the second current transmitter I21, the third current transmitter I22 and the second voltage transmitter U2 are respectively connected to the Central Processing Unit (CPU) through analog input and output modules, and detection results can be displayed and stored through a human-computer interface. The digital quantity input and output module is respectively connected with the Central Processing Unit (CPU), the logic signal of the first detection module and the logic signal of the second detection module, and is further connected with an alarm S and an alarm lamp L. And when the tested relay does not accord with the selected model or the performance is unqualified, or the internal device fails, the alarm lamp L is turned on, and the relay is turned off after the fault is eliminated. The alarm S is used for reminding during the operation of the human-computer interface and prompting fault recording and qualification judgment.

And alternating current isolation transformers T1 are respectively connected in series between the fixed direct current power supply and the adjustable direct current power supply and the power grid, and the alternating current isolation transformers T1 play roles in isolating and filtering the accessed power grid power supply, thereby reducing the influence of external noise and interference on the device.

The fixed direct current power supply DC1 is a fixed output power supply, is 24V in the device, is mainly used by internal working circuits such as a Central Processing Unit (CPU), an analog input/output module, a digital input/output module, a human-computer interface and the like, and is also used as the working voltage of a second detection module

The adjustable direct current power supply DC2 is a programmable control output power supply, is 0-230V, is mainly supplied to a tested relay for use, and can be matched with a first voltage transmitter U1 and a first current transmitter I1 to test the direct current resistance, pull-in voltage and release voltage of the tested relay.

The second voltage transmitter U2, the second current transmitter I21, the third current transmitter I22 and the current limiting resistor R1 are matched to detect the contact resistance of normally open and normally closed contacts of the relay to be tested and the on-off waveform of the contacts.

The working principle of the device is explained by taking a selective relay socket K1 as an example:

the relay to be tested is inserted into the relay socket K1, the socket selection switch SA is switched to the relay socket K1, the output voltage of the adjustable direct current power supply DC2 rises from 0 according to a preset slope, and the coil resistance value of the relay to be tested can be calculated through measuring the first voltage transmitter U1 and the first current transmitter I1. Meanwhile, voltage is applied to the contact of the relay to be tested, and when Tc is reached, the contact current of the relay to be tested can be judged as pull-in voltage Uc through the waveforms of the second current transmitter I21 and the third current transmitter I22.

Similarly, when the output of the first voltage transmitter U1 drops to the release voltage Ur, the contact of the relay to be tested is released. The contact resistance of the normally open contact and the normally closed contact of the relay to be tested can be calculated through the second voltage transmitter U2, the second current transmitter I21, the third current transmitter I22 and the current limiting resistor R1. And recording all waveform data, comprehensively comparing the waveform data with data in a relay type number table to be tested, and judging whether the waveform data is qualified or unqualified.

When the model of a relay to be tested is selected to be H12 and another relay to be tested with the model of H11 is actually inserted, the difference of the direct current resistance can be found when the first voltage transmitter U1 and the first current transmitter I1 are applied and measured. Continuing to step up the voltage, the first voltage transmitter U1 can record its pull-in voltage Uc and therefore can also calculate its data difference from a relay model H12. Continuing to raise the first voltage transducer U1 until 1.1 times the rated voltage of the relay model H11, and in turn lowering the voltage, the first voltage transducer U1 measures the recorded release voltage Ur. From these measurements and waveforms, it is possible to determine the type H11 relay and the type H12 relay being tested. Thereby prompting the user to check to see if the confirmation was inserted incorrectly. On the contrary, if the relay with the model H11 is selected and the relay with the model H12 is actually inserted, the comparison and judgment can be carried out by comparing the tested data and waveforms with the model table.

In conclusion, the self-adaptive relay detection device can adaptively and rapidly detect the basic parameters of the relay, only the relay needs to be plugged in and pulled out in the whole detection process, the device can automatically detect and record the type and the test result of the relay, the performance detection efficiency of the batch relays is obviously improved, and the device is particularly suitable for conventional maintenance of large-scale factory automation equipment. Therefore, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a self-adaptation relay detection device which characterized in that: the relay socket is connected between the first detection module and the second detection module; the first detection module comprises an adjustable direct-current power supply, a first current transmitter and a first voltage transmitter which are connected in series to form a loop; the second detection module includes fixed DC power supply, second voltage transmitter, current-limiting resistance, the contact detection module of establishing ties and forming the return circuit, the contact detection module is including the normally closed contact detecting element and the normally open contact detecting element that connect in parallel mutually, normally closed contact detecting element is including the normally closed contact wiring group and the second current transmitter that establish ties mutually, normally open contact detecting element is including the normally open contact wiring group and the third current transmitter that establish ties mutually.

2. The adaptive relay testing device of claim 1, wherein: the system comprises a central controller, a human-computer interface and an analog input/output module, wherein the human-computer interface and the analog input/output module are connected with the central controller, and the central controller is connected with the fixed direct-current power supply; the first current transmitter, the first voltage transmitter, the second current transmitter, the third current transmitter and the second voltage transmitter are respectively connected to the central controller through the analog quantity input and output module.

3. An adaptive relay testing device according to claim 2, wherein: the digital quantity input and output module is respectively connected with the central controller, the logic signal of the first detection module and the logic signal of the second detection module.

4. An adaptive relay testing device according to claim 3, wherein: the digital quantity input and output module is connected with an alarm.

5. An adaptive relay testing device according to claim 3, wherein: the digital quantity input and output module is connected with an alarm lamp.

6. The adaptive relay testing device of claim 1, wherein: and the relay socket is connected with a socket selection switch.

7. The adaptive relay testing device of claim 1, wherein: and the relay socket is connected with a corresponding socket indicator lamp in series.

8. The adaptive relay testing device of claim 1, wherein: alternating current isolation transformers are respectively connected in series between the fixed direct current power supply and the adjustable direct current power supply and between the fixed direct current power supply and the power grid.