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Device for measuring temperature in molten metal

A technology of molten metal and metal, which is applied in the field of long-term thermocouple equipment, can solve the problems of expensive and other problems, and achieve the effect of accurate temperature measurement, increased life expectancy, and precise control

Inactive Publication Date: 2016-08-10
HERAEUS ELECTRO NITE INT NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The metal components of these thermocouples, especially platinum, are very expensive

Method used

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  • Device for measuring temperature in molten metal

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Embodiment Construction

[0008] Referring to the drawings, wherein like reference numerals refer to like elements throughout, in figure 1 Among them, 10 represents the molten metal temperature measuring device according to the present invention.

[0009] Such as figure 1 Best shown, molten metal temperature measuring device 10 includes a thermocouple element, a portion of which is indicated generally at 12 . Typically, thermocouple element 12 consists of a positive element and a negative element (not shown). For the sake of discussion, in figure 1 In , the positive component is shown as positive lead 14 and the negative component is shown as negative lead 16 .

[0010] Positive lead wire 14 and negative lead wire 16 are generally composed of two different metal materials, such as platinum, platinum-rhodium alloy, nickel-chromium alloy, copper-nickel alloy, iron, nickel-aluminum alloy, and copper. Thermocouple element 12 is enclosed in a doublet (not shown) to isolate positive lead 14 from negative...

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Abstract

The invention discloses a device for measuring the temperature in molten metal. The device comprises a thermocouple element, a housing made of heat-resisting material and a retaining member for accommodating the thermocouple element. The retaining member has an open end and a closed end. The thermocouple element has a thermojunction located adjacent to the closed end of the retaining member. The retaining member is located in the housing and has a size smaller than that of the housing so as to limit a cavity between the retaining member and the housing. The cavity is filled with protective materials including a metallic oxide component and a desoxidant component.

Description

technical field [0001] This invention relates to a thermocouple device for measuring the temperature of molten metal, and more particularly, to a long-term thermocouple device for protecting the thermocouple element from chemical attack. Background technique [0002] Thermocouple equipment is used to monitor the temperature of molten metal in an environment with high temperature and strong reaction of molten metal. It must be able to resist corrosion and deterioration, and at the same time provide accurate temperature measurement for controlling the temperature of molten metal. [0003] Typically, a thermocouple consists of a positive and a negative element joined together, usually screwed together and welded at a hot junction exposed to the temperature of the molten metal. At each opposite end (ie, cold junction), they are connected to suitable equipment to enable the measurement of the electromotive force between the two leads as a function of the temperature gradient in e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/04G01K1/10
CPCG01K1/10G01K7/04
Inventor 马丁·肯德尔
Owner HERAEUS ELECTRO NITE INT NV
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