Double-graduation thermocouple and use method

A thermocouple and indexing technology, applied in the direction of using electromagnetic means, thermometers, measuring heat, etc., can solve the problems of poor detection accuracy, low work efficiency, cumbersome operation, etc., to improve accuracy, protect sealing, and work efficiency. high effect

Inactive Publication Date: 2015-11-25
SHENYANG AIRCRAFT CORP
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the present invention provides a dual-gradation thermocouple and its use method, by simultaneously encapsulating K-gradation thermocouples and N-gradation thermocouples corresponding to positions in the stainless steel protection tube, K The thermocouples with graduation number and N graduation number are equal in length, and a junction box is arranged on the upper end of the K graduation number thermocouple and N graduation number thermocouple. The lower surfac

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  • Double-graduation thermocouple and use method

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[0016] Such as Figure 1-2 A thermocouple with a double indexing number shown has a structure as follows: A pair of K indexing number thermocouple 8 and N indexing number thermocouple 9 are encapsulated in a stainless steel protection tube 6, and a pair of K indexing number thermocouple 8 is nickel Chromium electrode 1—Ni-silicon electrode 2, N thermocouple 9 is composed of a pair of nickel-chromium silicon electrode 4—Ni-Si-Mg electrode 5; thermocouple 8 in K graduation number and thermocouple in N graduation number A junction box 7 is connected to the upper end of the junction box 7. Four wires are connected to the four electrodes in the junction box 7 to output electrical signals in the electrodes; the lower surface of the junction box 7 is connected to the upper end of the stainless steel protection tube 6, and the stainless steel protection tube 6 Internally sealed.

[0017] The nickel-chromium electrode 1—the nickel-silicon electrode 2 is encapsulated in the ceramic part I...

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Abstract

The invention relates to a double-graduation thermocouple and a use method. According to the double-graduation thermocouple, a K-graduation thermocouple and an N-graduation thermocouple are sealed in a stainless steel protection tube, the K-graduation thermocouple comprises a pair of nickel chromium --nickel silicon electrodes, the N-graduation thermocouple comprises a pair of nickel chromium silicon--nickel silicon magnesium electrodes, upper ends of the K-graduation thermocouple and the N-graduation thermocouple are connected with a wiring box, the wiring box is respectively connected with four electrodes through four leads, electric signals in the electrodes are outputted, the lower surface of the wiring box is connected with the upper end of the stainless steel protection tube, and the inner portion of the stainless steel protection tube is sealed. The double-graduation thermocouple is advantaged in that precise verification on the state of the K-graduation thermocouple can be realized as well as detection on data, equipment sealingness is protected, detection accuracy is improved, operation is simple, and work efficiency is high.

Description

technical field [0001] The invention relates to a galvanic couple and a use method, in particular to a double-graduation thermocouple and a use method. Background technique [0002] Due to the advantages of wide operating temperature range, stable performance, and low price, K-graduation thermocouples are widely used in heat treatment equipment, especially medium temperature heating furnaces. Many standards and specifications such as the aerospace material specification AMS2750 require that the system accuracy verification thermocouple of the K graduation number cannot be used for the system accuracy verification of the process thermocouple of the K graduation number. Among the thermocouples that allow system accuracy verification of process thermocouples with K graduation number, since the thermocouples with B, R, and S graduation numbers are all noble metal thermocouples, the cost of thermocouples is relatively high, while the N graduation number The system accuracy verif...

Claims

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Application Information

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IPC IPC(8): G01K15/00G01K7/02
Inventor 高福邱东旭魏廷光
Owner SHENYANG AIRCRAFT CORP
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