A super high temperature displacement sensor

A displacement sensor, ultra-high temperature technology, applied in instruments, measuring devices, electrical devices, etc., can solve the problems of low accuracy and large sensor zero voltage, improve measurement accuracy, reduce zero voltage, and simplify the process flow Effect

Active Publication Date: 2021-04-02
NO 49 INST CHINESE ELECTRONICS SCI & TECH GRP
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  • Abstract
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Problems solved by technology

[0004] The present invention aims to solve the problem that the existing differential transformer type displacement sensor is restricted by the winding process and the temperature of the enameled wire, resulting in a large zero voltage of the sensor and low precision, and proposes an ultra-high temperature displacement sensor

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specific Embodiment approach 1

[0020] Specific implementation mode one, the following combination Figure 1 to Figure 6 Describe this embodiment mode, an ultra-high temperature displacement sensor described in this embodiment mode, the displacement sensor includes an end cover 2, a housing 4, an excitation winding 5, an iron core 6, a hollow cylinder 7, a skeleton 8 and two sets of output windings 9;

[0021] The shell 4 is a cylindrical structure, and the two ports of the cylindrical structure are respectively provided with end caps 2; the centers of the two end caps 2 are opened with circular through holes, and the hollow cylinder 7 passes through the two end caps 2 The through hole is fixedly connected with the end cover 2; and the hollow cylinder 7, the end cover 2 and the housing 4 form a sealed cavity;

[0022] The hollow cylinder 7 is inserted with an iron core 6, and the iron core 6 is axially fed displacement inside the hollow cylinder 7;

[0023] The skeleton 8, the excitation winding 5 and two ...

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Abstract

The invention provides a super-high-temperature displacement sensor, belongs to the technical field of displacement detection control and is to solve the problems that an existing differential transformer displacement sensor is restricted by winding technology and enamelled wire use temperature, which results in high zero voltage and low precision of the sensor. A housing of the displacement sensor is in a cylindrical structure, and the two ends of the cylindrical structure are respectively provided with an end cap; a hollow cylinder passes through the through holes of the two end caps and isfixedly connected with the end caps; the hollow cylinder, the end caps and the housing form a seal cavity; an iron core is inserted into the hollow cylinder, and the iron core axially feeds displacement in the hollow cylinder; a skeleton is sleeved on the outer wall of the hollow cylinder; an excitation winding and two groups of output windings are sleeved on the skeleton, and the excitation winding is arranged between the two groups of output windings; and the excitation winding and the two groups of output windings are an integrated structure formed by a plurality of ceramic sensitive coresconnected through high-temperature glass sintering. The super-high-temperature displacement sensor is suitable for a large-displacement detection system under ultra-high temperature and harsh environment.

Description

technical field [0001] The invention belongs to the technical field of displacement detection and control. Background technique [0002] Displacement sensor is a key component of displacement measurement of various large-scale mechanical adjustment control systems. It can be installed on the spool of pipeline control valve for high-precision detection of spool displacement. It has the functions of monitoring machine operating conditions, overspeed alarm and emergency stop. , which plays an important role in monitoring and evaluating the operating status and control of the unit. [0003] The current widely used differential transformer type displacement sensor adopts manual or automatic winding process to wind the coil. The working temperature of the sensor is restricted by the temperature of the enameled wire, and the maximum working temperature is only 220°C. Moreover, the multi-layer winding cannot guarantee the flatness and consistency of the coil winding, resulting in a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/02
CPCG01B7/02
Inventor 吴凌慧徐冬咸婉婷刘柏青周志炜文吉延宋成君王洋洋李旭辉柴寿臣
Owner NO 49 INST CHINESE ELECTRONICS SCI & TECH GRP
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