Mounting method of high-temperature sensor

Abstract

The invention provides a mounting method of a high-temperature sensor. The mounting method comprises the steps of carrying out rough treatment: carrying out surface rough treatment on a mounting partof a test piece, and protecting a non-mounting part at the same time; cleaning the mounting part of the test piece; spraying an active spraying material on a mounting area of the test piece in a high-temperature spraying mode to form an insulating coating; determining a position for mounting the temperature sensor, and sectionally fixing a lead, with sleeve protection, of the temperature sensor tothe surfaces, not covered by the high-temperature adhesive tape and the temperature sensor, of the temperature sensor, the lead and the insulating coating to form a covering coating; and checking a resistance value of the sprayed temperature sensor, thereby completing the mounting of the temperature sensor. According to the method, the high-temperature spraying process is adopted as a technical means to complete the mounting of the high-temperature sensor, so that the 1,400-DEG C temperature testing can be realized.

Description

Technical field [0001] The invention belongs to the technical field of aerospace high temperature environment test, and specifically relates to an installation method of a high temperature temperature sensor. Background technique [0002] With the development of hypersonic vehicles and space-to-earth shuttle vehicles, high-temperature environment test tasks are increasing year by year. Instruments and equipment must be able to work under high-temperature conditions. At the same time, considering the particularity of spacecraft testing, the installation of test instruments should not damage the model or aerospace as much as possible. The surface and structure of the device. With the deepening of research, a variety of new high-temperature measurement methods and methods have emerged. However, restricted by various factors such as ambient temperature, test cost, measurement accuracy, etc., conventional sensor measurement methods are still the most important test methods today. Dur...

AI Technical Summary

Problems solved by technology

Under the test conditions from room temperature to 250°C, 3M adhesive tape and silicone rubber are most commonly used to paste the sensor, which is easy to operate, but it cannot be used at high temperatures; the sensor is fixed firmly by riveting, screwing, and welding, but it is easy to damage the sensor and destroy it. The surface of the test piece; adhesives can also be used at medium and high temperatures. The advantage is that it is easy to use and does not cause damage to the test piece. The high-temperature adhesives currently used can withstand high temperatures from 800 ° C to 1400 ° C, but high-temperature adhesives need to be artificially proportioned, and There are strict requirements on the surface of the test piece, and it is easy to fall off when the sensor is connected with an adhesive on a smooth surface; under high temperature conditions, the glue is prone to embrittlement and cracking, which has a great impact on the sensor, and in severe cases will lead to sensor bonding failure

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