A high-temperature blasthole temperature measuring device and a high-temperature blasthole temperature measurement method

Abstract

The invention discloses a high-temperature blast hole temperature measuring device and a high-temperature blast hole temperature measuring method. The device includes an infrared temperature sensor, a cable, an air purging device, a heat-resistant pipe, an air pump, a display instrument and a heavy object. One end of the tube is connected to the air pump, and the other end is connected to the air purger. The infrared temperature sensor is fixed in the air purger, and the position of the infrared emission port of the infrared temperature sensor corresponds to the position of the purging port of the air purger. One end of the cable is connected to the display, the other end passes through the heat-resistant tube and is connected to the infrared temperature sensor, and the weight is fixed under the air blower. The invention adopts an infrared temperature sensor to improve the temperature measurement response time, and can quickly scan and measure the temperature of the hole wall at different depths of the blast hole, and continuously fill the heat-resistant tube with air through the air pump to monitor the cable and the infrared temperature sensor. To cool down, the dust or water vapor in the blast hole can be blown away by the air purger to measure the wall temperature of the blast hole.

Description

technical field [0001] The invention relates to a temperature measuring device, in particular to a high temperature blast hole temperature measuring device and a high temperature blast hole temperature measuring method, belonging to the technical field of blasting engineering. Background technique [0002] High-temperature fire areas can easily lead to accidental explosions or premature explosions during open-pit perforation blasting, which seriously restricts the completion of stripping production tasks. Therefore, in order to ensure the safety of blasting mining, it is necessary to obtain the temperature distribution inside the blast hole and judge the cooling effect of water injection, that is, accurate and effective Measuring the temperature of the wall of the high-temperature blast hole is an important prerequisite for high-temperature blasting scheme design and safe construction organization. High-temperature blastholes are generally composed of the wall of the hole, t...

AI Technical Summary

Problems solved by technology

The traditional thermocouple temperature measurement belongs to the contact temperature measurement. Because the contact temperature measurement needs to reach the thermal equilibrium to obtain the temperature, it has the disadvantage of slow temperature measurement response time. In addition, the thermocouple measures the temperature of the air in the blast hole, which cannot It completely and truly reflects the temperature of the hole wall, especially the large amount of water vapor that exists after the high-temperature blast hole is cooled by water injection, which seriously affects the temperature measurement effect of the thermocouple

Wireless infrared temperature measurement has the advantages of fast response speed, high temperature measurement upper limit, and easy portability, but it is easily affected by factors such as blasthole depth, smoke, water vapor, etc., resulting in large errors. In addition, this method cannot guarantee different depths in blastholes. The temperature can be measured, so there is a temperature measurement blind zone, that is, there is a possibility that the measured maximum temperature is lower than the actual maximum temperature

Images