Flowing water resistor and device for carrying out on-line insulation detection by using the same

Abstract

The invention discloses a flowing water resistor and a device for carrying out on-line insulation detection by using the same, wherein the flowing water resistor comprises a carrier which is made of insulation materials, has a certain geometrical shape and is provided with a water inlet and a water outlet, and water resistance liquid continuously inflows from the water inlet and outflows from the water outlet at a certain flow velocity and flow; the on-line insulation detection device comprises a water cooling slot, a water tank with a water pump, a flowing water resistor, a high-voltage transformer, a voltage regulator, a control circuit and a current detection and alarm protection device, wherein the water cooling slot is connected with the water tank by the flowing water resistor; the connecting end of the flowing water resistor and the water tank is grounded; the input end of the voltage regulator is connected with an external power source, and the output end thereof is connected with the input end of the transformer; the output end of the transformer is connected with the water cooling slot by a high-tension cable; the current detection and alarm protection device is connected with the circuit between the voltage regulator and the high-voltage transformer; and the control circuit is connected with the voltage regulator and the current detection and alarm protection device.

Description

technical field [0001] The invention relates to the field of insulation detection of electric (magnetic) wire and cable products, in particular to a flowing water resistance and a device for on-line detection of the insulation performance of wire and cable products by using the resistance. Background technique [0002] The electric (magnetic) wire and cable products produced online have a high temperature after being sintered at a high temperature, and usually need to be sent to a water cooling tank for cooling by cold water, and then their insulation properties are tested. Insulation testing of electric (magnetic) wire and cable products is an important link to ensure product quality. Carry out insulation testing, usually testing its insulation resistance. Insulation resistance is the resistance corresponding to the leakage current flowing through the insulating medium after a certain period of time when the polarization process is over when a voltage is applied to the ins...

AI Technical Summary

Problems solved by technology

[0004] Since the contact between the high-voltage steel ball and the tested wire and cable is a point contact method, the steel ball discharge can only perform insulation detection on the local contact point of the wire and cable, and cannot meet the process requirements for the overall insulation detection of the wire and cable; The insulation film on the surface of the cable is not in place during sintering after wrapping the bare copper wire, and the traditional high-voltage steel ball insulation detection method cannot be judged;

[0005] Since the wires and cables for on-line insulation testing are moving during manufacture, there is surface friction between the steel ball and the wire and cable, which will cause wear to the surface insulation film of the wire and wear the surface of the steel ball. The steel ball needs to be replaced periodically, and a small amount of residue will be left on the wire and cable products after testing

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