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A variable temperature multifunctional sample chamber

A sample chamber, multi-functional technology, used in the testing of dielectric strength, testing using optical methods, testing ship construction, etc., can solve problems such as inability to measure sample space charge, achieve constant temperature prevention, prevent electromagnetic interference, and quickly heat effect

Active Publication Date: 2021-09-07
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current test device cannot measure the space charge of the sample at different temperatures

Method used

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  • A variable temperature multifunctional sample chamber
  • A variable temperature multifunctional sample chamber

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Experimental program
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Effect test

specific Embodiment approach 1

[0024] Specific embodiments 1. A temperature-variable multifunctional sample chamber described in this embodiment, which is used for temperature-variable measurement in space charge distribution or trap distribution information;

[0025] Including closed sample chamber, oil bath circulation system and charge test system;

[0026] The closed sample chamber is a closed space enclosed by the heat insulation frame 2 on the outer layer and the conductive frame 1 on the inner layer. Cavity 3, each cavity is equipped with an oil bath communication component for the communication of the heating oil in the independent cavity;

[0027] The oil bath circulation system includes a main circulation pump 14 and an oil bath heater 21. The oil bath heater is used to heat the internal heating oil, which is passed into one of the inner chambers through the circulation of the main circulation pump, so that the inner The cavity is filled with heating oil and conducts heat through the space radiat...

specific Embodiment approach 2

[0030] Specific embodiment 2. This embodiment is a further description of the temperature-variable multifunctional sample chamber described in specific embodiment 1. Circulation pump 19, the oil inlet pipe of the sub-circulation pump is inserted into one of the inner chambers, and the oil outlet pipe passes through the partition and is inserted into an adjacent inner chamber by starting the sub-circulation pump so that the inner chamber where the oil inlet pipe is located It communicates with an inner cavity where an oil outlet pipeline is located.

specific Embodiment approach 3

[0031] Specific Embodiment 3. This embodiment is a further description of a temperature-variable multifunctional sample chamber described in Specific Embodiment 1. The charge test system includes an upper electrode 4, a lower electrode 7 and a test chamber sandwiched between them. Sample 5, the upper electrode is connected to the DC blocking capacitor 10 through a coaxial cable, the DC blocking capacitor, the amplifier 8, and the digital oscilloscope 9 are connected in sequence, and the upper electrode and the high-voltage DC power supply 11 are connected through a high-voltage lead wire 12 connect.

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Abstract

A temperature-variable multifunctional sample chamber, belonging to the technical field of electrical insulation testing, aims to solve the problem that the current testing device cannot measure the space charge of samples at different temperatures. The invention includes: information for space charge distribution or trap distribution The variable temperature measurement in the medium includes a closed sample chamber, an oil bath circulation system and a charge test system, and the closed sample chamber is surrounded by a thermal insulation frame (2) on the outer layer and a conductive frame (1) on the inner layer. The four corners of the space are divided into four independent inner cavities (3) by partitions (18), and each inner cavity is equipped with an oil bath communication component for the oil bath of the independent inner cavity. connected. The invention is used for space charge distribution or trap distribution information measurement.

Description

technical field [0001] The invention relates to the technical field of electrical insulation testing, in particular to a temperature-variable multifunctional sample chamber for measuring space charge distribution or trap distribution information. Background technique [0002] Space charge accumulation is a common phenomenon in insulating media. It will not only distort the electric field distribution in insulating media, but also accelerate the aging of insulating media and affect the life of insulation; other sensors such as electret materials rely on The role of space charge, space charge is therefore a general concern in the field of insulation and sensors. [0003] Laser-induced pressure wave testing technology has simple principle, mature testing technology and high safety in use, so this type of equipment has been widely used at home and abroad. However, the current test equipment cannot measure the space charge of the sample at different temperatures. Contents of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/16G01R31/12
CPCG01R31/1218G01R31/16
Inventor 王暄蔺雪葳李大伟李璐李春鹏佟丙旭
Owner HARBIN UNIV OF SCI & TECH
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