Low-temperature contact type surface temperature sensor

Abstract

The invention relates to a low-temperature contact type surface temperature sensor, comprising a housing, an upper cover, a temperature sensor, a magnetic ring and a uniform temperature medium, wherein an annular clamping groove is formed in the lower end of the housing; the magnetic ring is mounted in the annular clamping groove; a uniform temperature tank is arranged in the housing; the upper cover is arranged on the upper end of the housing and seals the uniform temperature tank in the housing; the temperature sensor is arranged in the upper cover in a penetrating manner; the lower portionof the temperature sensor is inserted into the uniform temperature tank; the uniform temperature medium is accommodated in the uniform temperature tank, which is an antifreezing solution; a liquid injecting hole is formed in the upper cover and corresponds to the uniform temperature tank on the housing; and a plug is arranged in the liquid injecting hole. According to the invention, the low-temperature contact type surface temperature sensor is attached to the surface of an object to be detected in a magnetic attraction manner, and no damage to the object to be detected is caused, thus ensuring the normal safe use of the object to be detected; the liquid uniform temperature medium is arranged in the housing of the surface temperature sensor, and the temperature sensor is immersed in the uniform temperature medium, so that the influence of external environment temperature and humidity on the temperature sensor can be avoided, ensuring the accuracy of temperature measurement.

Description

Technical field: [0001] The invention belongs to the technical field of instruments and meters for temperature detection, calibration and measurement, and in particular relates to a low-temperature contact surface temperature sensor. Background technique: [0002] At present, surface temperature measurement is used in the field of temperature control in various industries, such as the monitoring of the outer surface temperature of blast furnaces and heat pipes in power plants, the measurement of rail temperature before and after the train in rail transit, and the measurement of the surface temperature of steel plates in the steel manufacturing industry. , the monitoring of the outer surface temperature of the kiln in the energy-saving monitoring, the monitoring of the surface temperature of the aircraft in the aerospace scientific research, the temperature requirements of the asphalt rolling machine used in the building inspection, and the verification of the thermal conducti...

AI Technical Summary

Problems solved by technology

These installation methods have their own disadvantages: 1. Welding fixed type: damage the surface under test, reduce the strength of the device under test, and it will be difficult to replace or repair the temperature sensor

2. Hoop binding type: it has limitations and can only be used on small pipes, and it may loosen and fall off during long-term measurement, and the accuracy is easily affected by the outside world

3. Screw fixing: damage the surface of the measured object, reduce the overall performance of the measured object, and have great limitations

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