Multi-point temperature measuring cable-type sensor for coal bed

Abstract

The invention relates to a multi-point temperature measuring cable-type sensor for a coal bed. The multi-point temperature measuring cable-type sensor for the coal bed comprises a cable lead (1), wherein a plurality of PT100 temperature measuring elements (6) are connected to the cable lead (1) along the length direction; the multi-point temperature measuring cable-type sensor for the coal bed consists of the PT100 temperature measuring elements (6), the cable lead (1), a glass fiber insulating layer (2), an inner mica protecting sleeve (3), a steel wire reinforcing layer (4) and an outer stainless steel mesh protecting sleeve (5). By using the PT100 temperature measuring element (6), high-temperature measurement can be realized and the multi-point temperature measuring cable-type sensor for the coal bed is good in stability and high in precision; the multi-point temperature measuring cable-type sensor for the coal bed has the advantages that the temperature measurement within the range of -40 to 500 DEG C between all beds inside the coal bed can be realized.

Description

technical field [0001] The patent of the invention relates to a temperature measuring device for monitoring the internal temperature of the coal seam by a multi-point temperature-measuring cable sensor, especially in a closed coal storage bin to prevent spontaneous combustion of coal, and to measure the internal temperature of the multi-point and multi-layer coal seam installation. Background technique [0002] Closed silos and coal storage piles in coal yards are prone to spontaneous combustion; coal seam temperature rises are likely to cause spontaneous combustion and smoke, which poses a serious threat to the safety of closed silos and coal yards. At present, the existing temperature measuring devices cannot meet the requirements at the same time: it can measure the temperature of different layers inside the coal seam, and the upper limit of the temperature measurement can reach a high temperature of 500°C, so that the coal seam multi-point temperature measuring cable sen...

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Problems solved by technology

[0002] Closed silos and coal storage piles in coal yards are prone to spontaneous combustion; the rise of coal seam temperature is likely to cause spontaneous combustion and smoke, which poses a serious threat to the safety of closed silos and coal yards

At present, the existing temperature measuring devices cannot meet the requirements at the same time: it can measure the temperature of different layers inside the coal seam, and the upper limit of the temperature measurement can reach a high temperature of 500°C, so that the coal seam multi-point temperature measuring cable sensor will not be affected by coal during the spontaneous combustion period. coal burns spontaneously

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