CN220490989U - Calibrator with multiple relay calibration functions - Google Patents

Abstract

The utility model relates to the technical field of relay calibration instruments, in particular to a calibration instrument with multiple relay calibration functions, which comprises a box body and a box cover, wherein the top of the box body is hinged with the box cover, the upper end of the inside of the box body is fixedly provided with an operation panel, and the operation panel is provided with an input module, a voltage regulation module, a test module, an output module, a grounding terminal and a calibration terminal; the input module, the voltage regulating module, the inspection module, the output module and the grounding terminal are communicated, wherein the voltage regulating module is respectively connected with the input module, the inspection module and the output module, the grounding terminal is grounded and protected, and the inspection terminal is connected with the relay to be inspected. By combining the three-phase transformer principle, an adjustable three-phase voltage calibrator is provided to complete the calibration of the three-phase voltage relay and output corresponding detection signals, so that the gap that the commercially available relay calibrator cannot calibrate various relays simultaneously is filled.

Description

Calibrator with multiple relay calibration functions

Technical Field

The utility model relates to the technical field of relay calibration instruments, in particular to a calibration instrument with multiple types of relay calibration functions.

Background

In the outgoing test, the handover test and the routine test of the circuit breaker, the action characteristics of the intermediate relay, the time relay and the voltage relay are checked, and in the routine maintenance process of equipment, maintenance personnel are required to check various relays in the equipment control cabinet on site, but currently, three types of relays cannot be checked simultaneously by a commercially available relay check meter, and when the maintenance personnel are overhauled on site, the maintenance personnel often need to prepare a plurality of specific relay check meters for different relays, so that the purchase and maintenance cost of the test instrument is increased, and when a plurality of different types of relays are detected, the detection is not convenient enough, and meanwhile, the detection efficiency is reduced.

When an operator misconnects a non-corresponding intermediate relay, a time relay and a voltage relay, the measurement accuracy is affected, and the misconnection sometimes causes breakdown damage of related equipment, so that a check meter which is applicable to various types, multipurpose and accurate in monitoring is urgently needed in the existing check and detection process. Meanwhile, the detection and use of various devices such as an intermediate relay, a time relay, a voltage relay and the like are met.

Disclosure of Invention

In order to overcome the defects of the prior art, the embodiment of the utility model provides the calibrator with the function of calibrating the relays of various types, so as to solve the problems that the existing commercially available relay calibrator cannot calibrate the three types of relays simultaneously, a maintainer often needs to prepare a plurality of specific relay testers for different relays during on-site maintenance, the purchase and maintenance cost of the tester is increased, and when the relays of various types are detected, the detection is not convenient enough, and the detection efficiency is reduced.

In order to solve the technical problems, the utility model provides the following technical scheme: the calibrator with the multiple relay calibration functions comprises a box body and a box cover, wherein the box cover is hinged to the top of the box body, an operation panel is fixedly arranged at the upper end of the interior of the box body, and an input module, a voltage regulating module, a testing module, an output module, a grounding terminal and a calibration terminal are arranged on the operation panel; the input module, the voltage regulating module, the inspection module, the output module and the grounding terminal are communicated, wherein the voltage regulating module is respectively connected with the input module, the inspection module and the output module, the grounding terminal is grounded and protected, and the inspection terminal is connected with the relay to be inspected.

The input module comprises a power module and a switch module, wherein the power module adopts an alternating current power supply which is connected with a transformer, and the switch module comprises a three-phase air switch, a phase failure verification switch and an electronic timer switch; the output module comprises a three-phase voltage display, a single-phase voltage display and an electronic timer; the voltage regulating module comprises a three-phase voltage regulator, the voltage regulating module is respectively and electrically connected with the input module, the inspection module and the output module, and the three-phase voltage regulator is fixedly arranged in the box body.

The inspection module comprises a singlechip, and the model of the singlechip is MC9S12XS128.

The three-phase voltage display, the single-phase voltage display and the electronic timer of the output module adopt LED alternating current digital meters.

The three-phase voltage regulator adopts a continuous regulation mode and adopts a three-phase coil coaxial arrangement connection mode.

The utility model has the technical effects and advantages that:

in the scheme, the three-phase voltage calibrator with the adjustable three-phase voltage is provided by combining the three-phase transformer principle, the calibration of the three-phase voltage relay is completed, corresponding detection signals are output, the gap that the relay calibrator sold in the market cannot calibrate a plurality of relays simultaneously is filled, the multi-purpose operation is realized, the calibration problem of an alternating current relay in a transformer substation can be solved by one tester, the working efficiency of overhaulers is greatly improved, the purchase and maintenance cost of the tester is reduced, and the application range of the device is enlarged.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the case of the present utility model;

FIG. 3 is a schematic diagram of the wiring circuit diagram of the calibrator of the present utility model.

The reference numerals are: 1. a case; 2. a case cover; 3. an operation panel; 4. a three-phase air switch; 5. a phase failure verification switch; 6. an electronic timer switch; 7. a three-phase voltage display; 8. a single phase voltage display; 9. a ground terminal; 10. an electronic timepiece; 11. checking the terminal; 12. a three-phase voltage regulator.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 3, a calibrator with multiple relay calibration functions comprises a box body 1 and a box cover 2, wherein the box cover 2 is hinged to the top of the box body 1, an operation panel 3 is fixedly arranged at the upper end of the interior of the box body 1, and an input module, a voltage regulating module, a testing module, an output module, a grounding terminal 9 and a calibration terminal 11 are arranged on the operation panel 3; the input module, the voltage regulating module, the inspection module, the output module and the ground terminal 9 and the check terminal 11 are communicated, wherein the voltage regulating module is respectively connected with the input module, the inspection module and the output module, the ground terminal 9 is grounded and protected, and the check terminal 11 is connected with the relay to be inspected.

The input module comprises a power module and a switch module, wherein the power module adopts an alternating current power supply which is connected with a transformer, and the switch module comprises a three-phase air switch 4, a phase failure verification switch 5 and an electronic timer switch 6; the output module comprises a three-phase voltage display 7, a single-phase voltage display 8 and an electronic timer 10; the voltage regulating module comprises a three-phase voltage regulator 12, the voltage regulating module is respectively and electrically connected with the input module, the inspection module and the output module, and the three-phase voltage regulator 12 is fixedly arranged in the box body 1.

The inspection module comprises a singlechip, and the model of the singlechip is MC9S12XS128. The three-phase voltage display 7, the single-phase voltage display 8 and the electronic timer 10 of the output module adopt LED alternating current digital meters.

The three-phase voltage regulator 12 adopts a continuous adjustment mode and adopts a three-phase coil coaxial arrangement connection mode.

A detection schematic of a delay relay is shown in fig. 3, which is in electrical communication with the present utility model via a check terminal 11. The connection is only indicated by one relay connection, and other types of relays are consistent with the connection mode of the utility model. The power supply module adopts an alternating current power supply, the switch module comprises a three-phase air switch 4, a phase failure verification switch 5 and an electronic timer switch 6, the three-phase air switch 4 adopts a Schneider E9 series three-phase air switch 4, the 220V alternating current power supply is output by voltage regulation and voltage stabilization through the arrangement of the alternating current power supply, the output of the power supply module is opposite to that of a direct current power supply, the output voltage is stable, and the conditions such as attenuation and the like cannot be generated. The AC power supply is provided with a transformer, the transformer adopts an NDK transformer, the voltage stability is good, and the using temperature range is wide. The three-phase voltage regulator 12 is fixedly arranged in the box body 1, can output voltage with any value in an adjusting range through continuous adjustment mode and for gear adjustment, has wide application range, is coaxially arranged in the box body through three-phase coils, is adjusted together, saves the internal space of an instrument through stacking arrangement, and has low cost. The inspection module comprises a singlechip, and is low in development difficulty, low in cost, high in cost performance and economical and practical compared with a PLC. The LED AC digital meter has high resolution, high display accuracy, small volume and convenient installation.

The working process of the utility model is as follows:

according to the actual working requirement of the field, a transformer provides 7.5V alternating current for a detection module, continuously and stably outputs the alternating current, the output voltage is tested, a TSGC type three-phase voltage regulator is used, the voltage regulating range of the voltage regulator is 0-500V according to the verification requirement of a relay in a transformer substation, the relay with the highest required verification voltage level is a three-phase voltage monitoring type relay, 500V verification voltage is required, a singlechip MC9S12XS128 is used as a master controller, 16 paths of 12-bit AD conversion interfaces and rich communication interfaces are integrated in the singlechip, the minimum system of the MC9S12XS128 singlechip comprises a power supply circuit, a reset circuit, a clock circuit and a BDM debugging interface circuit, the power supply circuit provides 5V power supply by a switching power supply, and the power supply circuit provides the singlechip after capacitive filtering; the reset circuit adopts a reset circuit combining power-on reset and manual reset; the clock circuit adopts a passive crystal oscillator circuit consisting of a 16M crystal oscillator and a bypass capacitor; the BDM debugging interface circuit adopts a recommended form in a data manual to realize the downloading and debugging of programs, and finally, the single-phase voltage is displayed and the three-phase voltage is monitored through an LED alternating-current voltmeter capable of monitoring the single-phase voltage and an LED voltage digital display table capable of monitoring the three-phase voltage.

The practical detection application shows that:

success rate analysis table

All AC relays in a No. 1 main transformer interval of a 750kV Gansu silver transformer substation are used as standards for testing, the prior art detects five devices such as an AC contactor, an intermediate relay, a time relay, a voltage relay and a phase sequence protector, the detection success rate is about 66%, a main problem is that a maintainer needs to prepare a plurality of specific relay check meters for different relays when overhauling on site in the background art, and equipment type judgment errors, information reading errors, labeling errors and equipment selection errors are main reasons for low success rate. The success rate of the verification result is 100%.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (5)

1. The calibrator with the multiple relay calibration functions comprises a box body (1) and a box cover (2), wherein the box cover (2) is hinged to the top of the box body (1), and the calibrator is characterized in that an operation panel (3) is fixedly arranged at the upper end of the inside of the box body (1), and an input module, a voltage regulating module, a testing module, an output module, a grounding terminal (9) and a calibration terminal (11) are arranged on the operation panel (3); the input module, the voltage regulating module, the inspection module, the output module and the grounding terminal (9) and the checking terminal (11) are communicated, wherein the voltage regulating module is respectively connected with the input module, the inspection module and the output module, the grounding terminal (9) is grounded and protected, and the checking terminal (11) is connected with the relay to be checked.

2. The calibrator with the multiple relay calibration function according to claim 1, wherein the input module comprises a power module and a switch module, the power module adopts an alternating current power supply, the alternating current power supply is connected with a transformer, and the switch module comprises a three-phase air switch (4), a phase failure verification switch (5) and an electronic timer switch (6); the output module comprises a three-phase voltage display (7), a single-phase voltage display (8) and an electronic timer (10); the voltage regulating module comprises a three-phase voltage regulator (12), the voltage regulating module is respectively and electrically connected with the input module, the inspection module and the output module, and the three-phase voltage regulator (12) is fixedly arranged in the box body (1).

3. The calibrator with the function of calibrating the plurality of types of relays according to claim 1, wherein the calibration module comprises a single-chip microcomputer, and the single-chip microcomputer is MC9S12XS128.

4. The calibrator with the multiple relay calibration function according to claim 1, wherein the three-phase voltage display (7), the single-phase voltage display (8) and the electronic timer (10) of the output module adopt LED alternating current digital meters.

5. The calibrator with the function of calibrating the relays of multiple types according to claim 2, wherein the three-phase voltage regulator (12) adopts a continuous adjustment mode and adopts a three-phase coil coaxial arrangement connection mode.