Detachable electroacoustic pulse space charge measurement device

Abstract

The invention discloses a detachable electroacoustic pulse space charge measurement device. The detachable electroacoustic pulse space charge measurement device comprises an upper electrode unit and a lower electrode unit; a detachable temperature ladder electrode unit is further arranged between the upper electrode unit and the lower electrode unit. The upper electrode unit comprises an upper electrode shell and an upper electrode cavity, and an aluminum electrode is arranged in the upper electrode cavity; the lower electrode unit comprises a lower electrode shell and a lower electrode cavity, and a pulse generator and a signal collecting unit are arranged in the lower electrode cavity. The temperature ladder electrode unit comprises a temperature ladder electrode shell and a temperature ladder electrode cavity, and a cross-shaped aluminum electrode is arranged in the temperature ladder electrode cavity. The temperature ladder electrode unit further comprises a first constant temperature source used for transmitting the temperature to the temperature ladder electrode unit, a second constant temperature source used for transmitting the temperature to the lower electrode unit and a high-voltage direct-current power source used for transmitting the high-voltage direct-current electricity to an upper electrode. By means of the detachable electroacoustic pulse space charge measurement device, the space charge characteristics of materials under the constant temperature, the high temperature and the temperature ladder can be measured, the measurement operation is convenient and safe, and the measurement result is accurate.

Description

technical field [0001] The invention belongs to the technical field of space charge distribution measurement in polymer insulating materials, and in particular relates to a detachable electroacoustic pulse space charge measurement device. Background technique [0002] To study the space charge distribution in solid dielectric, the first step is to realize the measurement of the space charge distribution. The electroacoustic pulse method (PEA method) space charge measurement technology is one of the widely used measurement methods at home and abroad. The electroacoustic method under the temperature gradient field The pulse method space charge measurement device introduces a high / low temperature constant temperature circulating bath to the hollow upper and lower measuring electrodes, and uses forced cooling and forced heating to change the temperature of the upper and lower electrodes respectively, so that the upper and lower surfaces of the sample have different temperature. ...

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Problems solved by technology

[0003] Existing charge measurement devices can only measure the space charge characteristics of materials at a certain fixed temperature (such as normal temperature), and there are many inconveniences in the assembly of equipment during measurement, and the measurement accuracy and safety are not enough.

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