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A fully enclosed switching type small current sensor

An open-close, fully-enclosed technology, applied in the field of magnetoelectric sensors, to achieve the effect of increasing the contact area, increasing the magnetic field strength, and avoiding the use of fixtures

Active Publication Date: 2022-07-29
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art and provide a fully enclosed open-close small current sensor to solve or improve the above-mentioned problems

Method used

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  • A fully enclosed switching type small current sensor
  • A fully enclosed switching type small current sensor
  • A fully enclosed switching type small current sensor

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Embodiment Construction

[0026] The specific embodiments of the present invention are described below to facilitate those skilled in the art to understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes Such changes are obvious within the spirit and scope of the present invention as defined and determined by the appended claims, and all inventions and creations utilizing the inventive concept are within the scope of protection.

[0027] According to one embodiment of the present application, reference is made to figure 1 , the fully enclosed opening and closing small current sensor of this scheme includes a magnetoelectric laminate 1 and a sawtooth magnetic core 2; The magnetoelectric laminate material 1 is fixed at the air gap of the sawtooth-shaped magnetic core 2 in a manner.

[0028] An upper spacer block 3 and a lower spacer block 4 fix the toothed magnetic c...

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Abstract

The invention discloses a fully enclosed opening and closing type small current sensor, comprising a magnetoelectric laminated material and a sawtooth-shaped magnetic core; The magnetoelectric laminate is fixed at the air gap of the sawtooth-shaped magnetic core. In the present invention, the magnetoelectric laminate material is fixed at the air gap of the sawtooth-shaped magnetic core by means of full enclosing clamping. Compared with the single-end clamping and intermediate support clamping methods, the magnetic field strength not only effectively improves the magnetic field strength at the material, but also avoids the use of clamps, and is easy to install and maintain. At the same time, the design of the sawtooth opening and closing magnetic core can not only meet the needs of easy installation when the sensor is actually used, but also effectively increase the opening and closing of the magnetic core compared with the flat opening and closing magnetic core and the tooth opening and closing magnetic core. The contact area at the material increases the magnetic field strength at the material, thereby increasing the sensitivity of the sensor.

Description

technical field [0001] The invention belongs to the technical field of magnetoelectric sensors, and in particular relates to a fully enclosed switching type small current sensor. Background technique [0002] For high-voltage power equipment, during a period of operation, due to the influence of the surrounding environment, a weak current of milliampere to ampere level will be generated. At present, the measurement of weak current is widely used to evaluate high-voltage insulators, bushings, surge arresters and other equipment. operating status. Therefore, high-precision measurement of weak currents plays an important role in determining whether the high-voltage insulation of power equipment is functioning properly. With the rapid development of smart grids, non-contact current sensors are more and more widely used in the condition monitoring of electrical equipment that needs to be isolated from the primary current, and the composite magnetoelectric sensor composed of piez...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00G01R15/20
CPCG01R19/0092G01R15/20
Inventor 鲁彩江王景琦张紫嫣江雪玲曹中清华强董龙飞李林峰徐航
Owner SOUTHWEST JIAOTONG UNIV
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