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High-temperature temperature sensor

A temperature sensor and high temperature technology, applied in thermometers, instruments, scientific instruments, etc., can solve the problems of not meeting the requirements of the control system, long response time, poor insulation, etc., to achieve convenient and flexible installation, small time constant, and save installation Effect

Active Publication Date: 2014-04-02
天津航空机电有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing high-temperature temperature sensor has complex internal structure, poor insulation, short service life and long response time, which cannot meet the requirements of the control system

Method used

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Embodiment Construction

[0027] The technical solutions created by the present invention are described in detail in conjunction with the accompanying drawings and embodiments.

[0028] Such as Figure 1-6 As shown, a high-temperature temperature sensor includes a platinum resistance assembly 1, a mounting sleeve 2, a socket 3, a plug 4 and a tail piece 5 arranged in sequence; the platinum resistance assembly includes a protective cover 9 and a protective cover 9 Platinum resistor 7, insulating bushing 8, lead wire of platinum resistor 7 and nickel wire 10 penetrate into insulating bushing 8 after welding; insulating bushing 8 is made of alumina ceramics, which protects, isolates and insulates platinum resistor 7; The gap between the platinum resistor 7 and the protective cover 9 is filled with magnesia slurry 6 with good thermal conductivity, and the tail of the platinum resistor component 1 is sealed with high-temperature cement; the grade of high-temperature cement is 919; the problem of moisture ab...

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Abstract

The invention provides a high-temperature temperature sensor. The high-temperature temperature sensor comprises a temperature sensing element assembly, a mounting sleeve, a socket, a plug and a tail accessory which are sequentially arranged, wherein the temperature sensing element assembly comprises a protective sleeve, and a temperature sensing element and an insulating bushing which are arranged in the protective sleeve; a leading wire of the temperature sensing element penetrates into the insulating bushing after being welded with an inner conducting wire; the tail part of the temperature sensing element assembly is sealed by using high-temperature cement; a positioning bayonet which is welded with the protective sleeve is arranged at the front end of the mounting sleeve; temperature signals detected by the temperature sensing element are transmitted to a controller through the socket, the plug and the tail accessory. Compared with the prior art, the high-temperature temperature sensor has the advantages that the temperature sensing element for high-temperature temperature measurement adopts a platinum thermistor; the measurement accuracy is high; the signals are not required to be compensated or amplified; an internal structure adopts segmented design and package; the time constant is small; the reliability is high. Meanwhile, the product is simple in structure, light in weight and convenient to assemble and disassemble, and is suitable for the high temperature measurement of pipeline temperature in the field of aviation, aerospace, chemical industry and metallurgy.

Description

technical field [0001] The invention relates to a temperature sensor for measuring pipeline air temperature, in particular to a high-temperature temperature sensor. Background technique [0002] Temperature sensors are divided into two categories: contact type and non-contact type according to the measurement method, and are divided into two types: thermal resistance and thermocouple according to the internal component material of the sensor. At present, in the field of high-temperature measurement in the aviation field, most of the widely used thermocouples are thermocouples. However, after the thermocouples collect temperature signals, cold junction compensation and signal conversion are required. The internal packaging structure of the temperature sensor is one of its key technologies, because a reasonable packaging structure and packaging materials can improve the reliability of the product on the one hand, and improve the response time and measurement accuracy of the se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/18
Inventor 崔艳超陈虎刘素捧
Owner 天津航空机电有限公司
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