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Special type WRe temperature sensor

A temperature sensor, a special technology, used in thermometers, thermometer parts, instruments, etc.

Inactive Publication Date: 2007-09-12
沈阳东大传感技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] WRe thermocouples cannot be used in an oxidizing atmosphere, and are only suitable for use in a reducing atmosphere or an inert atmosphere. However, most industrial furnaces are in an oxidizing atmosphere. Even in a reducing atmosphere or an inert atmosphere, the thermocouple protects the air in the tube. Oxygen in the medium will also oxidize the WRe thermocouple, but it is very rare to measure the temperature with bare WRe wire in a reducing atmosphere or an inert atmosphere.

Method used

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  • Special type WRe temperature sensor

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Embodiment Construction

[0011] Special WRe temperature sensor, consisting of junction box 1, clamping tube 2, graphite outer protection tube 3, corundum inner tube 4, corundum insulating tube 5, antioxidant 6, hydride functional material 7, filler 8, tungsten-rhenium thermocouple wire 9 components, the junction box 1 is connected with the graphite outer protective tube 3 through the clamping tube 2, and the corundum inner tube 4 is filled with anti-oxidant 6, hydride functional material 7, and filler 8 to eliminate the gap between particles and the surface of even wire and powder Adsorbed oxygen is also added with hydride functional material 7. At high temperature, hydrogen is released in the protective tube, and it is strictly sealed with organic and inorganic binders. The reference end is isolated from the outside world and the inside of the tube, thereby manufacturing a tungsten-rhenium thermocouple. 9 Working conditions: WRe thermocouples are applied with materialization technology, adding antioxi...

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Abstract

A special WRe temperature sensor apply to temperature measuring region, composed by junction box, gripping tube, plumbago outer protecting tube, corundum inner tube, corundum insulating tube, antioxidant, hydride function stuff, stuffing, and tungsten- rhenium thermocouple. The structure: outer layer is special plumbago protecting tube; inner layer is alundum tube multiunit tube type oxidation protection WRe thermocouple. The invention can take temperature measurement under below 1600 degree, alcali molten erode and reducing atmosphere. fill antioxidant, hydride function stuff, stuffing into around of tungsten- rhenium thermocouple wire in corundum insulating tube inside of alundum tube inside; adopt stuffing at high temperatures release hydrogen gas on tungsten- rhenium thermocouple wire surface and powder particle interstice, and adopt organic- inorganic binder pressurize exactly, isolate contact between environment and tube insides, thereby to make thermometric condition for tungsten- rhenium thermocouple working.

Description

Technical field: [0001] The invention belongs to a special WRe temperature sensor used for process industry control detection. Background technique: [0002] At present, temperature measurement technology in the field of metrology and testing at home and abroad is becoming more and more important, because temperature is one of the important parameters of industrial process control, and the accuracy of temperature measurement directly affects product quality, energy consumption and equipment life. WRe in the WRe temperature sensor is the English abbreviation for metal tungsten and rhenium. Most of the high-temperature industrial furnaces and kilns in my country use S, R, and B-type precious metal thermocouples for temperature measurement above 1300 °C. my country is a country that is extremely scarce in platinum group resources, and almost all platinum used in temperature measurement is imported. At the same time, my country is a big country for storage, mining and smelting ...

Claims

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Application Information

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IPC IPC(8): G01K7/02G01K1/08
Inventor 王魁汉
Owner 沈阳东大传感技术有限公司
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