Electric strength measurement device for rubber-like materials

Abstract

The invention discloses an electric strength measurement device for rubber-like materials, belongs to the technical field of electric strength measurement, and solves the problem that measurement results of an existing measurement device of rubber-like materials are lack of guiding significance on design of electric cable accessories. The electric strength measurement device is characterized in that an upper bottom plate and a lower bottom plate are fixedly connected through struts, a spring bearer plate and an electrode bearer plate are slidably connected to the struts, and pressure springs are located between the spring bearer plate and the electrode bearer plate; a pressure screw drives the spring bearer plate to move vertically; the middle portion of a rubber sample is arranged at the position between an upper electrode and a lower electrode while two ends of the same are clamped through sample holders; a sample-fixing holder is fixedly connected with the lower bottom plate, a sample-moving holder is slidably mounted on an auxiliary slide, a first slide bearing is connected with the sample-moving holder through a screw, and a nut is mounted on the outer end, penetrating the first slide bearing, of the screw. By the arrangement, electric strength of hold-tight force on measurement of the rubber materials under tensile and stress states is simulated, accuracy in measurement is achieved, and the measurement results are of great guiding significance to design of the electric cable accessories.

Description

technical field [0001] The invention relates to an electric strength measuring device, in particular to an electric strength device capable of measuring the simulated clamping force of rubber materials under tension and pressure, and belongs to the technical field of electric strength measurement. Background technique [0002] At present, rubber materials are widely used in AC / DC cable accessories as the reinforced insulation of cable accessories. In order to make the rubber reinforced insulation tightly fastened to the XLPE main insulation, the inner diameter of the reinforced insulation is usually less than The outer diameter of the main insulation, so that the reinforced insulation is fixed on the main insulation under the action of the clamping force, but at this time the rubber material has been deformed. As we all know, when rubber materials are in different tensile states and different pressure states, the electric strength will vary a lot. However, the existing measu...

AI Technical Summary

Problems solved by technology

As we all know, when rubber materials are in different tensile states and different pressure states, the electric strength will vary a lot. However, the existing measuring devices for the electric strength of rubber products do not involve the specific tensile state and specific pressure state. Under the current situation, the measurement of the electric strength of rubber-like materials makes the measurement results lack guiding significance for the design of cable accessories.

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