SU1203351A1 - Device for measuring temperature of liquid metal - Google Patents

Description

The invention relates to the field of metallurgy, in particular to the measurement of the temperature of a metal in raslav.

The purpose of the invention is to improve measurement accuracy.

FIG. a device for measuring the temperature of a metal installed in a bucket vacuum valve is shown; figure 2 is the same, a longitudinal section; in FIG. 3 - section A-A in FIG. 2

The device contains a displacement mechanism, consisting of the immersion mechanism 1 and the body 3 rotation mechanism 2,) located on the corridor of the vacuum chamber 4. The light-conducting elements are located in the body 3, which are fixed in the radial | bushes 6. The light-guiding element 5 in the upper part is in contact with the sleeve 7, rigidly attached to the plate 8, on which the device for recording pyrometric radiation is placed 9. The plate 8 is installed in the guides 10 and is spring-loaded. is adjusted by nuts 12. Nap equals are attached to the flap1P13 of the casing 3. The casing 3 is made out of separate orneynoptn ix blocks 14, screwed together.

In the lower block 14, a hole was inserted into which the plug 15 was installed, made of a refractory material with high thermal conductivity, for example, of the material KVIT (high-density corundum with the addition of titanium). Between the refractory blocks 14 and the light-guiding elements 5, the heating elements are installed electrometers 16 with isotopes 17. The heating elements 16 are dissipated. Scenes in the form of two half-arcs 18, encircling the light-conducting elements 5 and connected in the lower part with an annular bridge 19. In the upper part the heating element has terminals 20 for connection5

NIN to the power source (not shown). The upper part of the light guide element 5, which protrudes from the housing 3, is covered with a casing 21.

The device works as follows. Notwithstanding immersion of the body 3, heating elements 16 are included, which heat the refractory body 3 and the light-emitting element 5 according to a special heating schedule in order to avoid thermal shock.

when immersing the housing 3 in the molten metal. After reaching the required temperature, a command is issued to immerse the body 3 to the required depth and move to the desired measurement point, which is achieved by the mechanism 1 of the immersion and the mechanism 2 turning the body 3. When the body 3 is immersed in the metal melt, the plug 15 is heated to the temperature of the melt and its radiation through the light guide, the scie elements 5 are sensed by the device 9 for the reconstruction of pyrometric radiation. When thermal changes are made to the light guide element 5, it is moved in sleeves 6, and the gap between the individual elements is removed (shaking them with springs 1 by means of sleeve 7 with a plate 8 and face

5 contacts of the light-conducting element 5 with the lower part of the housing 3. During the period of the processing cycle, the device controls the points of possible liquidation of the liquid metal, the inner part of the slide gate 1 times; 1kiv of the liquid metal, and compared with the temperature in the arc zone . With a large temperature drop, the arc power decreases and the speed of the electromagnetic metal increases. After the processing cycle of the liquid metal is completed, a command is issued to lift the housing 3, after the housing 3 is lifted, the heating elements are turned on, which eliminates the rapid cooling of the light-conducting elements 5.

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Claims (4)

1. DEVICE FOR MEASURING TEMPERATURE OF A LIQUID METAL, comprising a housing with sequentially arranged light-conducting elements, one of which is located in the measurement zone, and the other is directed to the pyrometric radiation measuring device, characterized in that, in order to improve the measurement accuracy, the ends of the light-conducting elements made with the possibility of contact with each other, are enclosed in guide bushings, the end of the element located in the measurement zone is made with the possibility of mechanical contact with the body mustache, and the end of the light guide element, directed to the pyrometric radiation measuring device, is spring-loaded with the housing via a plate with a sleeve on which the pyrometric radiation measuring device is placed. 2. The device according to π. 1, characterized in that the outer part of the housing is made of refractory material. 3. The device according to π. 1, characterized in that it is equipped with heating elements made in the form of two half arcs, framing the light guide element and connected at the bottom. 4. The device according to π. 1, characterized in that it is equipped with a mechanism for moving the housing along the volume of the molten metal. FIG. 1