Test tool for detecting electromagnetic coil of high-voltage equipment

Abstract

The utility model relates to a test tool for detecting an electromagnetic coil of high-voltage equipment. The test tool comprises a universal board, a PLC controller, an air switch, a relay, a coil fixing device, a switching power supply, a terminal strip and a universal meter. The universal board is a rectangular board, the first row of the universal board is provided with a PLC and a switching power supply, the second row of the universal board is provided with an air switch and a terminal strip, the third row of the universal board is provided with a relay and a universal meter from top to bottom, and a coil fixing device is arranged below the relay; circuit wiring is carried out through a universal board, one or more coil fixing devices are arranged, and each coil fixing device is correspondingly connected with one relay; and a to-be-detected electromagnetic coil is detachably mounted in the coil fixing device. According to the utility model, the programmable PLC is adopted to cooperate with the switching power supply to work, so that different voltage and time function tests can be carried out on the electromagnetic coil, and the quality, performance and reliability of the electromagnetic coil can be comprehensively tested to ensure the safety and stability of a power supply system.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical engineering, in particular to the detection of electromagnetic coils of high-voltage equipment, and in particular relates to a test tool for detecting the electromagnetic coils of high-voltage equipment. Background Art

[0002] The solenoid coil is one of the most important components in a high-voltage circuit breaker. It includes the closing and locking electromagnet, the opening coil, and the closing coil. It is primarily used to convert electrical energy signals into magnetic energy signals, generating electromagnetic attraction and causing mechanical movement to achieve closing, opening, and protection of the equipment. Therefore, the quality of the solenoid coil determines the normal operation of the high-voltage circuit breaker and even the reliability of the entire power supply system. Frequent damage to the solenoid coil of a high-voltage circuit breaker will seriously affect the reliability of the power supply system and even cause it to degrade. Currently, the main problems are as follows:

[0003] 1. The quality of the existing electromagnetic coils in stock cannot be effectively tested before use. Online testing is cumbersome and requires stopping the high-voltage power supply and opening the internal operating mechanism of the circuit breaker, which consumes a lot of manpower and material costs.

[0004] 2. The power supply system equipment has been in operation for a long time, and some spare parts are on the verge of being discontinued. It is uncertain whether the performance of replacement spare parts can meet the on-site use requirements, such as operation frequency, voltage resistance, etc.

[0005] 3. The original spare parts may have insufficient performance. For example, long power outages, frequent operations, and unstable voltage will cause damage to the electromagnetic coil, and maintenance personnel need to replace it frequently. Summary of the Invention

[0006] The utility model provides a test tool for detecting electromagnetic coils of high-voltage equipment to solve the technical problems existing in the known technology, thereby improving the reliability of the equipment and reducing degradation effects.

[0007] The utility model includes the following technical solutions:

[0008] A test tool for testing electromagnetic coils of high-voltage equipment comprises a universal board, a PLC controller, an air switch, a relay, a coil fixing device, a switching power supply, a terminal block and a multimeter; the universal board is a rectangular board, and from top to bottom the first row of the universal board is provided with a PLC controller and a switching power supply, the second row is provided with an air switch and a terminal block, the third row is provided with a relay and a multimeter, and the coil fixing device is provided below the relay; circuit wiring is performed through the universal board, and one or more coil fixing devices are provided, each coil fixing device correspondingly connected to a relay; the electromagnetic coil to be tested can be detachably installed in the coil fixing device.

[0009] Furthermore, the main circuit loop of the test tool is connected to a ground wire, a control power supply, a working power supply and a switching power supply; the working power supply is connected in parallel with a relay, the switching power supply is connected in parallel with an air switch, and the air switch is controlled by a PLC controller.

[0010] Furthermore, the coil fixing device includes an outer fixing frame and a coil retaining plate. The coil retaining plate is movably mounted on both sides and the bottom of the outer fixing frame via threaded rods. When the electromagnetic coil needs to be fixed, the threaded rods are rotated to push the coil retaining plate inward, thereby clamping the electromagnetic coil.

[0011] Furthermore, a wire opening is provided on the top of the outer fixing frame to facilitate wiring of the electromagnetic coil.

[0012] Furthermore, a threaded rod is movably mounted on each of the two ends of the coil limiting plate through a connecting seat.

[0013] Furthermore, the threaded rod passes through the mounting hole on the outer fixing frame and extends into the connecting seat, and the threaded rod is threadedly connected to the mounting hole and the connecting seat.

[0014] Furthermore, the relay is an HH52P intermediate relay.

[0015] Furthermore, the switching power supply outputs a DC power with a rated voltage of 24V, and both the control power supply and the working power supply output 24V DC power.

[0016] Furthermore, when the electromagnetic coil is subjected to an energized action frequency intensity test and an energized withstand voltage intensity test, the electromagnetic coil to be tested is connected to a relay, and the PLC controller runs a time cycle program.

[0017] Furthermore, when the voltage, current and DC resistance of the electromagnetic coil are tested, the electromagnetic coil to be tested is connected to a multimeter.

[0018] The advantages and positive effects of this utility model are:

[0019] 1. The process of replacing the electromagnetic coil includes power outage and switching operation, opening the internal operating mechanism of the circuit breaker, removing the damaged electromagnetic coil, installing a new electromagnetic coil, and performing an opening and closing test after successful installation. The above operations take at least about 40 minutes. If the opening and closing test is unsuccessful, the electromagnetic coil needs to be replaced and tested repeatedly, which wastes a lot of manpower, material resources and time costs. The use of this utility model can detect the electromagnetic coil of the high-voltage equipment in advance to ensure that the spare parts are not damaged, test their durability and reliability, and organize replacement during the night time, thereby reducing working time, improving production efficiency and saving production costs.

[0020] 2. This utility model adopts a programmable PLC controller in conjunction with a switching power supply to achieve different voltage and time function tests on the electromagnetic coil, and conducts comprehensive tests on the quality, performance and reliability of the electromagnetic coil to ensure the safety and stability of the power supply system.

[0021] 3. The utility model connects various components through a universal board, has a simple structure, is easy to move, and can be used for practical training and testing of maintenance personnel, and is flexible and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a three-dimensional structure of the coil fixing device;

[0024] Figure 3 This is a schematic diagram of the circuit structure of the main circuit;

[0025] Figure 4 It is a schematic diagram of the circuit structure of the power-on test;

[0026] Figure 5 This is a schematic diagram of the circuit structure tested by a multimeter.

[0027] In the figure, 1-electromagnetic coil; 2-universal board; 3-PLC controller; 4-air switch; 5-relay; 6-coil fixing device; 601-external fixing frame; 602-coil limit plate; 603-wire port; 7-switching power supply; 8-terminal block; 9-multimeter; 10-threaded rod; 11-control power supply; 12-working power supply. DETAILED DESCRIPTION

[0028] In order to further disclose the content, features and effects of the invention, the following examples are given and described in detail with reference to the accompanying drawings. In the description of the following embodiments, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting this patent.

[0029] In the description of the following embodiments, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they may refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on specific circumstances.

[0030] Example: See attached Figure 1-3 A test tool for detecting electromagnetic coils of high-voltage equipment, comprising a universal board 2, a PLC controller 3, an air switch 4, a relay 5, a coil fixing device 6, a switching power supply 7, a terminal block 8 and a multimeter 9; the relay 5 is an HH52P intermediate relay. The switching power supply 7 outputs a DC power with a rated voltage of 24V, and the control power supply 11 and the working power supply 12 both output 24V DC power. The universal board 2 is a rectangular plate. From top to bottom, the first row of the universal board 2 is provided with a PLC controller 3 and a switching power supply 7, the second row is provided with an air switch 4 and a terminal block 8, the third row is provided with a relay 5 and a multimeter 9, and a coil fixing device 6 is provided below the relay 5; the circuit is wired through the universal board 2, and one or more coil fixing devices 6 are provided, each coil fixing device 6 correspondingly connected to a relay 5; the electromagnetic coil 1 to be tested can be detachably installed in the coil fixing device 6.

[0031] like Figure 2 As shown, the coil fixing device 6 includes an outer fixing frame 601 and a coil limiting plate 602. The inner sides and bottom of the outer fixing frame 601 are both movably mounted with the coil limiting plate 602 via threaded rods 10. When the electromagnetic coil 1 needs to be fixed, the coil limiting plate 602 can be pushed inward by rotating the threaded rod 10, thereby clamping the electromagnetic coil 1. A wire passage 603 is provided at the top of the outer fixing frame 601 to facilitate wiring of the electromagnetic coil 1. A threaded rod 10 is movably mounted at each end of the coil limiting plate 602 via a connecting seat. The threaded rod 10 passes through the mounting hole on the outer fixing frame 601 and extends into the connecting seat. The threaded rod 10 is threadedly connected to the mounting hole and the connecting seat.

[0032] like Figure 3-Figure 5 As shown, the test tool's main circuit circuit is connected to a ground wire, a control power supply, an operating power supply, and a switching power supply 7. The operating power supply is connected in parallel to a relay 5, and the switching power supply 7 is connected in parallel to an air switch 4, which is controlled by a PLC controller 3. When performing energized operation frequency intensity testing and energized voltage withstand strength testing on the electromagnetic coil 1, the electromagnetic coil 1 under test is connected to the relay 5, and the PLC controller 3 runs a time loop program. When testing the voltage, current, and DC resistance of the electromagnetic coil 1, the electromagnetic coil 1 under test is connected to a multimeter 9.

[0033] Working principle: After assembling the above-mentioned test tool, install the electromagnetic coil 1 in the coil fixing device 6, perform specific technical parameter testing on the coil (including voltage, current, DC resistance, electrical life and other multi-dimensional values), and record relevant data according to different test requirements.

[0034] (1) Conducting a power-on action frequency intensity test: Program a time loop program through the PLC controller 3, such as a power-on time of 1 second, a power-off time of 5 seconds, and so on.

[0035] (2) Conducting power-on voltage withstand strength test: Conduct voltage test according to the voltage of the on-site operating environment and the technical parameters of the electromagnetic coil 1. Write a time loop program through the PLC controller 3, set the power-on time to less than 1s and the power-off time to more than 5s, and adjust the voltage to 187V and 242V respectively through the adjustable switching power supply 7 or relay protection tester for testing.

[0036] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, those skilled in the art can devise various forms without departing from the spirit of the present invention and the scope of protection of the claims. All such forms fall within the scope of protection of the present invention.

Claims

1. A test tool for detecting electromagnetic coils of high-voltage equipment, characterized by: The invention comprises a universal board, a PLC controller, an air switch, a relay, a coil fixing device, a switching power supply, a terminal block and a multimeter; the universal board is a rectangular board, and the first row from top to bottom of the universal board is provided with a PLC controller and a switching power supply, the second row is provided with an air switch and a terminal block, the third row is provided with a relay and a multimeter, and a coil fixing device is provided below the relay; the circuit wiring is performed through the universal board, and one or more coil fixing devices are provided, and each coil fixing device is connected to a corresponding relay; the electromagnetic coil to be tested can be detachably installed in the coil fixing device.

2. A test tool for detecting electromagnetic coils of high-voltage equipment according to claim 1, characterized in that: The main circuit loop of the test tool is connected to a ground wire, a control power supply, a working power supply and a switching power supply; the working power supply is connected in parallel with a relay, the switching power supply is connected in parallel with an air switch, and the air switch is controlled by a PLC controller.

3. The test tool for detecting electromagnetic coils of high-voltage equipment according to claim 1, characterized in that: The coil fixing device comprises an outer fixing frame and a coil limiting plate. The inner sides and bottom of the outer fixing frame are both provided with the coil limiting plates movably mounted via threaded rods.

4. A test tool for detecting electromagnetic coils of high-voltage equipment according to claim 3, characterized in that: A wire passing opening is provided on the top of the outer fixing frame.

5. The test tool for detecting electromagnetic coils of high-voltage equipment according to claim 3, characterized in that: A threaded rod is movably mounted on each of the two ends of the coil limiting plate through a connecting seat.

6. A test tool for detecting electromagnetic coils of high-voltage equipment according to claim 5, characterized in that: The threaded rod passes through the mounting hole on the outer fixing frame and extends into the connecting seat. The threaded rod is threadedly connected to the mounting hole and the connecting seat.

7. The test tool for testing electromagnetic coils of high-voltage equipment according to claim 1, characterized in that: The relay is an HH52P intermediate relay.

8. The test tool for detecting electromagnetic coils of high-voltage equipment according to claim 1, characterized in that: The switching power supply outputs a DC power with a rated voltage of 24V, and both the control power supply and the working power supply output 24V DC power.

9. A test tool for detecting electromagnetic coils of high-voltage equipment according to any one of claims 1 to 8, characterized in that: When testing the voltage, current and DC resistance of an electromagnetic coil, the electromagnetic coil to be tested is connected to a multimeter.

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