CN204347210U - The easy verifying attachment of a kind of auxiliary reclay - Google Patents

Abstract

The utility model discloses a simple and convenient inspection device for an intermediate relay, which comprises a mounting bracket, on which a wiring terminal block, an intermediate relay mounting base, an indicator light and a switching power supply are installed, and the electromagnetic coil and the pair of contact points of the intermediate relay respectively pass through the The lead wires are connected to the terminal block, and each pair of contacts is connected in series with an indicator light. After several indicator lights are connected in parallel, they are connected to the switching power supply and powered by the switching power supply. The power supply device with voltage output function is connected to the electromagnetic through the terminals of the terminal block. The wiring terminal of the coil provides detection power for the intermediate relay. Using the device of the utility model to detect the intermediate relay can facilitate the detection operation of electrical inspection operators, and is convenient and fast, saving manpower and material resources.

Description

A Simple Inspection Device for Intermediate Relay

technical field

The utility model relates to the technical field of protection and automatic control of electric relays, in particular to a simple calibration device for intermediate relays.

Background technique

In industrial production activities, electrical relay protection and automatic control technology have been involved in all fields, and relays are widely used as a basic component to realize relay protection and automatic control functions, usually more relays are used. , current relay, time relay and intermediate relay and other main types, and the intermediate relay is the most used one. The intermediate relay is used in the relay protection and automatic control system to increase the number and capacity of contacts and realize relay protection and Automatic control function. In accordance with the requirements of the industry's operation and maintenance regulations, it is necessary to regularly inspect the operating characteristics of the intermediate relay, including testing the operating voltage and return voltage of the relay, and checking the contact status of the contacts after the action. Usually, the inspection method for intermediate relays is to disassemble the relays one by one and apply voltage to its electromagnetic coil terminal, record the action of the relay and the returned voltage value, and measure the connection of each contact one by one with the resistance file of the multimeter. There are generally three or four docking points. This method is acceptable if only one or two intermediate relays are inspected, but when inspecting a large number of intermediate relays, this method becomes time-consuming and laborious, and the work efficiency is low. However, in actual production, it is often used A large number of intermediate relays.

Utility model content

The technical problem to be solved by the utility model is to provide a simple and quick checking device for intermediate relays, which can quickly check a large number of intermediate relays, improve the work efficiency of inspectors, shorten the inspection time and reduce the inspection cost.

The utility model solves the above-mentioned technical problem as following technical scheme:

The utility model provides a simple inspection device for an intermediate relay, which includes a mounting bracket on which a wiring terminal block, an intermediate relay mounting base, an indicator light and a switching power supply are installed, and the electromagnetic coil and the pair of contacts of the intermediate relay are respectively connected to each other through wires. To the terminal block, each pair of contacts is connected in series with an indicator light, and several indicator lights are connected in parallel to the switching power supply. The power supply is powered by the switching power supply, and the power supply device with voltage output function is connected to the electromagnetic coil through the contacts of the terminal block. The connecting terminal provides detection power for the intermediate relay.

The mounting bracket is provided with two air switches, one of which is connected to the connection circuit between the electromagnetic coil and the power supply unit to control the on-off of the test circuit; the mounting bracket is provided with two air switches, one of which is It is connected to the connection circuit between the electromagnetic coil and the power supply unit to control the on-off of the test circuit; another air switch is connected to the switching power supply to control the on-off of the indicator light circuit.

Adopting the device of the utility model to detect the intermediate relay can facilitate the detection operation of electrical inspection operators, is convenient and fast, and saves manpower and material resources.

Description of drawings

Fig. 1 is a structural schematic diagram of the inspection device of the present invention.

Fig. 2 is the electrical schematic diagram of the utility model connecting the electromagnetic coil of the intermediate relay with the power supply device.

Fig. 3 is the electrical schematic diagram of the utility model connecting the contacts of the intermediate relay with the switching power supply and the indicator light.

In the figure: QF1, QF2 are air switches; KA is intermediate relay; HL1, HL2, HL3, HL4 are indicator lights; 5—PS switching power supply; 8—intermediate relay mounting base; 9—terminal block; 10—rail.

Detailed ways

Below in conjunction with accompanying drawing, device of the present utility model is further described.

As shown in Figure 1, the utility model intermediate relay simple inspection device includes a mounting bracket in a square structure, on which are installed a terminal row 9, an intermediate relay mounting base 8, and indicator lights whose number is the same as the number of contact pairs of the intermediate relay. (This example is four indicator lights HL1, HL2, HL3, HL4) and PS switching power supply 5, the electromagnetic coil of the intermediate relay KA and several pairs of contacts are respectively connected to the terminal block 9 through wires, and each pair of contacts is connected in series. lamp. As shown in Figure 3, the four indicator lights are connected in parallel to the PS switching power supply 5 that can convert AC 220V to DC 24V, and connected to the air switch QF2 to control the on-off of the indicator light circuit. As shown in Figure 2, the wires of the power supply device with voltage output function are connected to the terminals of the intermediate relay KA electromagnetic coil through the terminal block 9 to provide detection power for the intermediate relay, and read the voltage value, and connect the circuit The air switch QF1 is connected in series to control the on-off of the detection circuit.

The intermediate relay KA is fixed on the matching installation base 8, the installation base 8, the air switch QF1, the air switch QF2 and the terminal block 9 are hung on the guide rail 10, and the guide rail 10 is fixed on the bottom plate of the device.

The utility model can directly plug in and replace the intermediate relay through the intermediate relay installation base 8 without changing the wiring, and the external power supply device provides inspection power for the intermediate relay KA to be calibrated, and the power supply device can adjust the power supply voltage as required At the same time, the voltage value can be read directly, and each pair of contacts of the intermediate relay KA is respectively connected to an indicator light. When the intermediate relay KA operates, the indicator lights HL1, HL2, HL3 and HL4 circuits are connected, the indicator lights are on, and the circuit is checked. The on-off is controlled by the air switch QF1; the indicator lights HL1, HL2, HL3 and HL4 are powered by a PS switching power supply 5 that converts AC 220V to DC 24V, and the on-off is controlled by the air switch QF2.

The mounting base 8 of the intermediate relay described in the utility model can be replaced at any time according to different intermediate relay models.

The utility model leads the electromagnetic coil and contacts of the relay to the terminal by using a base that matches the model of the intermediate relay to be tested, and at the same time connects the contacts of the relay in series to the indicator circuit, and then uses an adjustable power supply to power the electromagnetic coil. Voltage, read the action and return voltage of the relay through the voltage meter, and then observe the connection status of the relay contact conveniently and intuitively through the indicator light. The whole verification process only needs to insert the relay into the base, and then adjust the power supply voltage to complete the verification work.

Claims (2)

1. A simple inspection device for an intermediate relay, comprising a mounting bracket, characterized in that, the mounting bracket is equipped with a terminal block, an intermediate relay mounting base, an indicator light and a switching power supply, an electromagnetic coil of the intermediate relay and several pairs of contacts They are respectively connected to the terminal block through lead wires. Each pair of contacts is connected in series with an indicator light. Several indicator lights are connected in parallel to the switching power supply. The power supply is supplied by the switching power supply. The power supply device with voltage output function passes through the terminal block Connected to the terminal of the electromagnetic coil to provide detection power for the intermediate relay. 2. The simple and convenient inspection device for intermediate relays according to claim 1 is characterized in that two air switches are provided on the mounting bracket, and one of the air switches is connected to the connection circuit between the electromagnetic coil and the power supply unit to control the connection of the inspection circuit. off; another air switch is connected to the switching power supply to control the on and off of the indicator light circuit.