A new type of insulation shakeout safety discharge device

Abstract

The utility model belongs to coal mine underground electromechanical technical field, concretely relates to a new type insulating swing test safety discharge device, including the swing watch, the swing watch is equipped with two wire clamps, still include emitting diode group, protective resistor, discharge capacitor and discharge button, the wire of wire clamp E and the wire of wire clamp L between connecting discharge button, protective resistor, discharge capacitor and emitting diode group, emitting diode group includes two reverse parallel emitting diodes, discharge button and emitting diode group are located on the shell of swing watch, and protective resistor, discharge capacitor are placed in the shell of swing watch. Using this new type insulating swing test safety discharge device can obviously observe the disappearance of spark in the process of discharging electromechanical equipment, and the insulating swing test safety discharge device not only satisfies the function of swing test electromechanical equipment but also increases the purpose of safety discharge, the device is stable in operation, high in safety factor and convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of underground electromechanical technology in coal mines, and specifically relates to a novel insulation resistance test safety discharge device. Background Technology

[0002] Coal mining is a special industry, and underground gas is the biggest hidden danger, especially in high-gas areas. If an electrical spark occurs in these areas, it can easily cause a gas explosion. When maintaining electrical equipment underground in coal mines, four steps must be followed for safety: power off, voltage testing, discharge, and grounding. When underground electromechanical equipment malfunctions, a megohmmeter is often used to measure insulation values ​​to determine the cause of the fault. After the test, the equipment needs to be discharged. Discharging releases the electrical energy stored within the equipment, which leads to the generation of an electric spark. This is because at the moment of discharge, the grounding electrode and the equipment are in point contact, resulting in a relatively large current and thus an electric arc. Currently, the discharge method used for maintaining underground electromechanical equipment in coal mines is to directly ground the equipment using a grounding rod for short-circuit discharge. This method requires workers to ground one end of the grounding rod and directly contact the other end with the equipment, making the voltage of the equipment momentarily equal to that of the ground (zero voltage) to achieve the purpose of discharge. This process can easily generate electrical sparks, which in high-gas areas can pose a deadly threat to the safe production of coal mines. Summary of the Invention

[0003] This invention addresses the problem of sparks easily generated during the discharge process of underground coal mine electromechanical equipment by providing a novel insulation-based safe discharge device. This device utilizes internal circuit losses instead of direct grounding discharge, effectively delaying the discharge time and preventing the generation of electrical sparks, thus playing a crucial role in ensuring safe production in high-gas mines.

[0004] This utility model is achieved using the following technical solution: A novel insulation resistance test safety discharge device includes a megohmmeter with two clamps, clamp E and clamp L. It also includes a group of light-emitting diodes (LEDs), a protective resistor, a discharge capacitor, and a discharge button. The discharge button, protective resistor, discharge capacitor, and LED group are connected between the wires of clamp E and clamp L. The LED group consists of two LEDs connected in anti-parallel. The discharge button and LED group are located on the megohmmeter housing, while the protective resistor and discharge capacitor are housed inside the megohmmeter housing. This device can form a discharge circuit with the LED group, protective resistor, discharge capacitor, and electromechanical equipment. During the discharge process, the LEDs gradually turn off from being lit to indicate the discharge process.

[0005] When using this novel insulation resistance test safety discharge device to discharge electromechanical equipment, the disappearance of sparks can be clearly observed. The insulation resistance test safety discharge device not only meets the function of testing electromechanical equipment but also adds the application of safety discharge. The device operates stably, has a high safety factor, and is easy to use. Attached Figure Description

[0006] Figure 1 This is a circuit diagram of the discharge device of this utility model. Detailed Implementation

[0007] A novel insulation resistance test safety discharge device, such as Figure 1 As shown, it mainly consists of a megohmmeter, an LED array, a protective resistor, a discharge capacitor, and a discharge button. The megohmmeter comes with two clamps, clamp E and clamp L. The discharge button, protective resistor, discharge capacitor, and LED array are connected between the wires of clamp E and clamp L. The LED array includes two LEDs connected in reverse parallel. The discharge button and LED array are located on the megohmmeter housing, while the protective resistor and discharge capacitor are located inside the megohmmeter housing.

[0008] The megohmmeter's clamps E and L securely hold the conductive parts of the electromechanical equipment. When testing the insulation of the equipment, crank the handle and read the data. After testing, press the discharge button to activate the discharge circuit. Observe the LED array; as the LEDs gradually extinguish, it indicates that the equipment has finished discharging. The main principle of this device is to gradually convert electrical energy into heat energy through resistance, avoiding the generation of an electric arc during grounding in conventional discharge processes.

Claims

1. A novel insulation resistance test safety discharge device, comprising a megohmmeter, the megohmmeter having two clamps, clamp E and clamp L, characterized in that: It also includes a group of light-emitting diodes, a protective resistor, a discharge capacitor, and a discharge button. The discharge button, protective resistor, discharge capacitor, and light-emitting diode group are connected between the wires of clamp E and the wires of clamp L. The light-emitting diode group includes two light-emitting diodes connected in reverse parallel. The discharge button and the light-emitting diode group are located on the housing of the megohmmeter, while the protective resistor and discharge capacitor are placed inside the housing of the megohmmeter.

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