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Arc characteristic detecting device and method

A technology of arc characteristics and detection device, which is applied to measurement devices, optical devices, measurement of electricity, etc., can solve the problems of inability to realize arc morphology, that is, the need for detection of long and short arcs and thick and thin arcs, and achieves easy operation and controllability The effect of strengthening and improving the quality of molten steel

Inactive Publication Date: 2012-07-25
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned patents can detect some characteristics of the arc, but cannot meet the needs of the arc shape, that is, the detection of long and short arcs and thick and thin arcs

Method used

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  • Arc characteristic detecting device and method

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0055] In experiment 1, a hollow electrode was used to spray Ar+H 2 Experimental results for the mixed gas process. By measuring various data of the arc, it can be concluded that the arc length L at this time is 52.3mm, the arc root diameter R1 is 17.9mm, and the arc end diameter R2 is 36.7mm. At this time, the arc temperature is 5840K, and the arc is basically slightly deflected. In the arc state, the arc deflection angle is 12° (not shown). image 3 For this reason, the voltage and current detected continuously during the experiment, the arc voltage at the corresponding moment is 57.7V, and the current is 1389.5A. The arc power is 80.174kW. The arc resistance was 0.0415Ω.

experiment example 2

[0057] Experiment 2 is the experimental result of the experimental process using solid electrodes. Through the measurement of various data of the arc, it can be concluded that the arc length L is 38.9mm at this time, the arc root diameter R1 is 13.6mm, and the arc end diameter R2 is 30.6mm. At this time, the arc temperature is 6241K, and the arc is basically severely deflected. state, the arc deflection angle is 45°. Figure 4 For this reason, in the continuous detection of voltage and current during the experiment, the arc voltage at the corresponding moment is 68.2V and the current is 1413A. The arc power is 96.37kW. The arc resistance was 0.0483Ω.

experiment example 3

[0059] Experiment 3 is the experimental result of using the hollow electrode to inject Ar gas. Through the measurement of various data of the arc, it can be concluded that the arc length L is 28.2mm at this time, the arc root diameter R1 is 15.6mm, and the arc end diameter R2 is 24.7mm. At this time, the arc temperature is 4932K, and the arc is basically slightly deflected. state, the arc deflection angle is 4°. Figure 5 For this reason, in the continuous detection of voltage and current during the experiment, the arc voltage at the corresponding moment is 50.2V, and the current is 1457.7A. The arc power is 73.176kW. The arc resistance was 0.0344Ω.

[0060] Using the above detection device, an arc can be generated between the cathode and the anode, and arc characteristic parameters such as arc voltage, current, arc shape (arc length, arc thickness), arc temperature, etc. can be detected;

[0061] The arc voltage and current can be collected and stored in the computer;

[...

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Abstract

The invention relates to arc characteristic detecting device and method. The arc characteristic detecting device comprises a power source (14), a positive conductor (15), a negative conductor (15'), a bottom electrode (5), a signal collection converter (7), a support post (17), an electrode holder (16), a graphite electrode (1), a raster (2), an arc camera (4), a leading screw supporting rod (18), a screw rod (9), a photoelectric encoder (10) and a computer (8), wherein the bottom electrode (5) is connected with the position conductor (15), the electrode holder (16) is movably arranged at theupper end of the support post (17) up and down, one end of the graphite electrode (1) is supported to one end (16a) of the electrode holder and is connected with the negative conductor (15'), the raster (2) and the arc camera (4) respectively face to an arc generating area (3), the leading screw supporting rod (18) is fixed on the lower end of the support post (17), one end (9a) of the screw rod (9) is supported to the leading screw supporting rod (18), the other end (9b) of the screw rod (9) is in screw joint with the other end of the electrode holder (16) and extends out, the photoelectric encoder (10) is arranged at the top end of the other end of the screw rod, and the computer (8) is connected with a signal collector, the raster, the camera and the photoelectric encoder through signal wires. The arc characteristic detecting device can be used for detecting arc appearance and carrying out an arc test.

Description

technical field [0001] The invention relates to a detection device, in particular to a device capable of carrying out arc experiments and detecting arc characteristics in actual production fields and a detection method thereof. Background technique [0002] In the field of metallurgical technology, many metallurgical furnaces use high-temperature arcs as heat sources to melt and heat materials in the furnace. In the smelting process of conventional metallurgical furnaces (electric arc furnaces, LF ladle refining furnaces), arc characteristics (arc power, arc shape including long and short arcs and thick and thin arcs, arc temperature, etc.) not only affect the electrical efficiency and thermal efficiency of metallurgical furnaces, but also It affects the submerged arc effect of the metallurgical furnace, thereby affecting the quality of molten steel and the life of the refractory material of the metallurgical furnace. In addition, the arc characteristics are crucial to the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00G01R31/00G01B11/02
Inventor 陈兆平徐迎铁沈建国张慧书战东平姜周华
Owner BAOSHAN IRON & STEEL CO LTD