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Impact-resistant fast-response thermocouple

A thermocouple and fast-response technology, which is applied in the direction of directly heat-sensitive electric/magnetic element thermometers, measuring heat, and using electric devices, etc., can solve problems such as rapid measurement of temperature signals, and achieve fast and fast response to temperature The effect of speed and good application prospects

Pending Publication Date: 2022-06-24
63653 FORCES PLA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem of how to realize the rapid measurement of temperature signals under high temperature and strong impact test conditions

Method used

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  • Impact-resistant fast-response thermocouple

Examples

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Embodiment 1

[0034] The W5%Re alloy and W26%Re alloy were rolled into alloy strips with a thickness of 80 μm, a width of 2 mm and a length of 31 mm, respectively, and 10 μm alumina films were coated on both sides of the two alloy strips by magnetron sputtering technology. The total thickness of the thin strip is about 200 μm after pressing and solid, and it is used as a thermocouple sensitive element. Grind and polish the 1mm rear end of the thermocouple sensitive element to expose the alloy. Use low-temperature silver paste to connect two C-type thermocouple wires 4 with a diameter of 0.3mm, a length of 50mm, and the composition of W5%Re alloy and W26%Re respectively, and the thermocouple sensitive element. The two sides of the element 1 are connected to transmit the temperature signal output by the temperature sensor.

[0035] The 99.98% high-purity alumina powder was pressed at 200MP to form a semi-cylindrical protector with a diameter of 4mm and a length of 60mm, and then sintered at 180...

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Abstract

The invention discloses an impact-resistant fast-response thermocouple, and belongs to the technical field of thermocouples. The thermocouple sensitive element is of a sandwich structure, the thermocouple sensitive element 1 is of a sandwich structure and is composed of three layers of insulating layer films and two layers of tungsten-rhenium alloy thin strips, the protection body is of a circular truncated cone structure which is cut into two halves along an axial surface, and the protection body and the thermocouple sensitive element which are installed and fixed are installed in the through hole from the front end of the stainless steel shell. Meanwhile, the thermo wire is led out from a through hole in the end face of the hexagonal prism; the C-type thermocouple wire is connected with the thermocouple sensitive element temperature sensing sheet through low-temperature silver paste and is used for transmitting a temperature signal output by the temperature sensing sheet; the protection tube is used for leading out and protecting the C-type thermocouple wire, is in welded connection with the positive and negative electrodes of the C-type thermocouple socket, and is used for leading out thermocouple voltage signals. The device has the advantages of quick temperature response, high impact resistance, low manufacturing cost, convenience in mounting and fixing and the like, and has a good application prospect in the field of quick high-temperature testing in the military industry and the aerospace industry.

Description

technical field [0001] The invention belongs to the technical field of thermocouples, in particular to an impact-resistant fast-response thermocouple. Background technique [0002] In the process of combustion experiments, there are many test occasions that need to measure transient temperature changes, such as aero-engine tail spray temperature, etc. The common characteristics of these transient temperatures are high temperature, rapid change, strong impact on the test site, and most of them are unacceptable. Repeat the one-time process. Therefore, it is technically difficult to accurately measure and obtain temperature parameters. At present, the fast-response surface thermocouples manufactured by well-known foreign thermocouple manufacturers such as NANMAC Company in the United States adopt a special process. The maximum test temperature can reach 2300 °C, and the response time can reach the microsecond level. Great technical advantages; the chip-type thin-film thermoco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/02G01K1/08G01K1/14
CPCG01K7/02G01K1/08G01K1/14
Inventor 张继军张东亮孔德骞廖旭东崔云霄丁倩彬寇猛伍元
Owner 63653 FORCES PLA
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