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Unit for detecting liquor level of molten steel by using long crystal

A liquid level and molten steel technology, which is applied in the field of continuous casting machine crystallizer molten steel liquid level detection device, can solve the problems of low reflection efficiency, difficult decontamination, and easy adsorption of foreign matter on the surface of the gel light guide, etc.

Active Publication Date: 2009-09-02
田志恒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are that the inner surface of the metal shell has low reflection efficiency to the corn, the surface of the gel light guide is easy to absorb foreign matter and is difficult to decontaminate, and the structure and assembly process of the receiver are relatively complicated, making it difficult to popularize.

Method used

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  • Unit for detecting liquor level of molten steel by using long crystal
  • Unit for detecting liquor level of molten steel by using long crystal

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Embodiment Construction

[0013] The first embodiment of the present invention is as figure 1 shown. Among the figures, the receiver (101) is pushed into the receiver installation box (102) in the crystallizer water tank (107) from the side of the crystallizer (105). The cylindrical source box (103) is vertically installed in the source box installation box (104) in the crystallizer water tank (107) through the flange (106) of the crystallizer (105). When the mold molten steel level detection device works, the point source (103a) in the source box (103) is located at the copper tube (108) on the side close to the mold (105) and the copper tube on the opposite side close to the mold (105) A vertically mounted long sodium iodide crystal (101f) in the receptacle (101) of (108a) is irradiated. The reflective layer of the crystal (101f) is mainly magnesium oxide, the length of the crystal (101f) covers the entire measurement range R of molten steel level measurement, and the photon exit glass window is a...

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Abstract

A device for measuring the liquid level of molten steel in the mold of a continuous casting machine, which consists of a receiver installed in the receiver installation box in the crystallizer water tank, a gamma radiation source with shadow shielding installed in the source box installation box and signal processing machine etc. The detector in the receiver is a side-window type long scintillation crystal whose long axis is vertically installed with a reflective layer mainly made of magnesium oxide, and a glass window is set on the side wall, so as to connect with devices such as photomultiplier tubes with a horizontal axis, so that the scintillation The length of the crystal covers the full measurement range of molten steel level measurement and improves measurement sensitivity.

Description

technical field [0001] The invention relates to a detection device for molten steel level in a crystallizer of a continuous casting machine. technical background [0002] Sodium iodide crystals are often used as receivers in the molten steel level detection device of the continuous casting machine crystallizer. Usually the sodium iodide crystal is a cylindrical end window type, that is, the cylindrical surface and one end of the cylindrical crystal are coated with magnesium oxide powder as a photon reflection layer and packaged with a metal shell, and the other end is coated with silica gel or gel sheet and glass. The package is used as a transmission window (ie end window) for generating photons in the crystal, and the crystal is connected in series with the light guide, photomultiplier tube and electronic circuit board outside the end window in the receiver shell to form a receiver. Usually the receiver is cylindrical, and its axis is installed approximately horizontally ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/292
Inventor 田志恒姜虹
Owner 田志恒