CN214781939U - Thermocouple used inside blast furnace hearth - Google Patents
Thermocouple used inside blast furnace hearth Download PDFInfo
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- CN214781939U CN214781939U CN202022434173.8U CN202022434173U CN214781939U CN 214781939 U CN214781939 U CN 214781939U CN 202022434173 U CN202022434173 U CN 202022434173U CN 214781939 U CN214781939 U CN 214781939U
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Abstract
A thermocouple used in the blast furnace hearth, the thermocouple body has a section of protruding arc, the arc is installed in the ramming material area between cooling wall of blast furnace hearth and carbon brick, the arcuate length is greater than the radial thickness of the ramming material layer and the height sum of rising of carbon brick; the arc part of the upper bulge is wrapped with carbon fiber asbestos; during installation, the thermocouple is beaten to form an upward-convex arc shape in a ramming material area between the cooling wall and the carbon brick, the ramming shape is placed in an upward direction, carbon ramming materials are filled below the thermocouple, the thermocouple of a ramming material layer is wrapped by carbon fiber asbestos, and the thermocouple is protected from being damaged when the ramming materials are filled. The method has the advantages that the thermocouple with enough length is reserved in the ramming material area between the cooling wall and the carbon bricks, the thermocouple of the hearth of the blast furnace bottom can be effectively prevented from being pulled and sheared off by the rising carbon bricks, the installation is convenient and fast, the operability is strong, and the method is easy to implement in the blast furnace construction process.
Description
Technical Field
The utility model relates to the technical field of a thermocouple of a blast furnace hearth in the metallurgical industry, in particular to a thermocouple used inside the blast furnace hearth.
Background
The blast furnace is an important component in the ferrous metallurgy industry, the long service life of the blast furnace is the pursuit target of blast furnace production, the longer the service life of the blast furnace is, the more beneficial the maximization of the economic benefit of iron-making production is realized, and the factor influencing the longest service life of the blast furnace is the safety problem of a hearth. Therefore, monitoring of the temperature of the side wall of the blast furnace hearth and the temperature of the hearth carbon bricks is very important for judging the erosion of the blast furnace hearth.
The temperature of the side wall of the blast furnace hearth and the temperature of the hearth carbon bricks are monitored by measuring the temperature by a thermocouple installed in the construction process of the blast furnace hearth. At present, in the production process of a blast furnace, the phenomenon of hearth thermocouple damage often occurs, except that the carbon bricks are scoured, eroded and burned out in the later period of furnace service, most hearth thermocouples are damaged because harmful elements are circularly enriched in the blast furnace and finally deposited in gaps of the carbon bricks to cause the carbon bricks to integrally rise in the production process of the blast furnace, and therefore the thermocouples buried in the carbon bricks are cut off.
The traditional method for installing the hearth and the hearth comprises the following steps: slotting on the built carbon bricks, cleaning the carbon brick slots, penetrating thermocouples through holes reserved in a furnace shell, vertically laying the thermocouples in the carbon brick slots, manually straightening the thermocouples, filling and tamping the slots by using carbon cement in time, ensuring that the upper surfaces of the slotting positions of the thermocouples and the upper surfaces of the carbon bricks are on the same horizontal plane, and performing on-off inspection on the embedded thermocouples by technical personnel after the thermocouples are embedded and the construction of the next procedure can be performed after the thermocouples are embedded and finished.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a thermocouple for blast furnace hearth inside which prevents the blast furnace production process from being cut off due to rising of furnace hearth carbon bricks and further prevents the occurrence of failure phenomenon. The utility model discloses can avoid damaging because of the thermocouple that above-mentioned reason caused, be favorable to blast furnace production operator to judge and adjust the operation to blast furnace stove bottom crucible state, help the production operation of extension blast furnace stove bottom crucible long, improve the first generation furnace age of blast furnace to produce higher economic value.
Combine present national blast furnace campaign later stage, the condition of hearth thermocouple major part damage, cut off for preventing the charcoal brick that the thermocouple was risen is cut in blast furnace production process, the utility model discloses a solution is like this:
a thermocouple for the interior of blast furnace hearth is composed of a main body with a segment of arc shape, a ramming material region between cooling wall and carbon brick, and a length greater than the sum of radial thickness of ramming material layer and the height of carbon brick.
The more specific technical scheme also comprises the following steps: the arc shape of the upper projection of the thermocouple body is a semi-arc shape.
Further: the arc part of the upper bulge is wrapped with carbon fiber asbestos.
The utility model has the advantages that the thermocouple of sufficient length is left in the ramming mass region between stave cooler and charcoal brick, can prevent effectively that the thermocouple of blast furnace stove bottom hearth from being broken and cut apart by the charcoal brick of rising, and simple to operate is swift, and maneuverability is strong, implements very easily in blast furnace construction process.
Drawings
Fig. 1 is a layout view of a hearth brick lining thermocouple when the present invention is used.
Fig. 2 is a schematic structural diagram of the present invention.
The parts of the drawings are detailed as follows: 1. the method comprises the following steps of (1) installing a circumferential datum line of a thermocouple, 2) arranging points at the position of a temperature measuring head of the thermocouple, 3) arranging a radial line of the thermocouple on a hearth brick lining, 4) arranging a blast furnace shell outer edge, 5) arranging a blast furnace cooling wall inner edge, 6, arranging a furnace bottom carbon brick outer edge, 7, reserving length and a modification position of the thermocouple, 8, pounding a material region between the furnace bottom carbon brick, 9, a cooling wall and the carbon brick, 10, arranging a blast furnace shell and the cooling wall, 11, forming an upward convex arc, 12 and arranging a thermocouple body.
Detailed Description
As shown in fig. 2, the thermocouple body 12 of the present invention has a section of upwardly convex arc 11, which is installed in the ramming material area 9 between the cooling wall of the blast furnace hearth and the carbon bricks, and the length of the arc is greater than the sum of the radial thickness of the ramming material layer and the rising height of the carbon bricks; the convex arc 11 is wrapped with carbon fiber asbestos. In this embodiment, the upwardly convex arc 11 is a semi-circular arc.
The invention is adopted to arrange a plan view of a thermocouple of a brick lining of a blast furnace hearth, as shown in figure 1, when the thermocouple is installed, a groove is firstly formed on a carbon brick according to the arrangement diagram of each layer, and the groove is implemented according to the circumferential direction and the radial line of the arrangement diagram and the position arrangement points of the temperature measurement head of the thermocouple. And after the grooving is finished, the thermocouples enter the furnace bottom carbon brick grooving from the outer edge of the blast furnace shell through the mounting hole through the through holes, and the arrangement is well carried out according to the arrangement points of the temperature measuring head positions of the thermocouples and the thermocouple numbers.
After the thermocouples are arranged according to the numbers, according to the reserved length of the thermocouples and the position of the modification position 7 shown in fig. 1, the thermocouples are beaten into a semicircular arc shape in a ramming material area between the cooling wall and the carbon brick, the beaten shape is placed in an upward direction, carbon ramming materials are filled below the thermocouples, the thermocouples in the ramming material layer are wrapped by carbon fiber asbestos, and the thermocouples are protected from being damaged when the ramming materials are filled. The length of the special-shaped thermocouple must be greater than the sum of the radial thickness of the ramming material layer and the rising height of the carbon brick, so that the thermocouple can be effectively prevented from being broken or sheared off due to rising of the carbon brick, and finally, the carbon ramming material is used for filling, compacting and grooving slotted holes to complete the arrangement and installation of the thermocouple in the hearth brick lining.
Claims (3)
1. A thermocouple for use inside a blast furnace hearth, comprising: the thermocouple body (12) is provided with a section of upward convex arc (11), the arc is arranged in a ramming material area (9) between the cooling wall of the blast furnace hearth and the carbon brick, and the length of the arc is greater than the sum of the radial thickness of the ramming material layer and the rising height of the carbon brick.
2. The thermocouple for the inside of a blast furnace hearth according to claim 1, wherein: the arc (11) protruding upwards from the thermocouple body (12) is in a semi-arc shape.
3. The thermocouple for the inside of a blast furnace hearth according to claim 1 or 2, wherein: the upward-convex arc (11) is wrapped with carbon fiber asbestos.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022434173.8U CN214781939U (en) | 2020-10-28 | 2020-10-28 | Thermocouple used inside blast furnace hearth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022434173.8U CN214781939U (en) | 2020-10-28 | 2020-10-28 | Thermocouple used inside blast furnace hearth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214781939U true CN214781939U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022434173.8U Active CN214781939U (en) | 2020-10-28 | 2020-10-28 | Thermocouple used inside blast furnace hearth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214781939U (en) |
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2020
- 2020-10-28 CN CN202022434173.8U patent/CN214781939U/en active Active
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