CN103940244A - Method for constructing heating element embedded type hearth for instrument device - Google Patents
Method for constructing heating element embedded type hearth for instrument device Download PDFInfo
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- CN103940244A CN103940244A CN201410133460.1A CN201410133460A CN103940244A CN 103940244 A CN103940244 A CN 103940244A CN 201410133460 A CN201410133460 A CN 201410133460A CN 103940244 A CN103940244 A CN 103940244A
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- burner hearth
- bushing pipe
- groove
- furnace tube
- furnace
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Abstract
The invention provides a method for constructing a heating element embedded type hearth for an instrument device. The inner side of a hearth pipe is provided with a groove structure, and an electric heating element is embedded into the groove structure. The method is applied to coke reactivity or resistance furnaces such as metallurgy reduction furnaces which have perpendicular or horizontal heating manners, the requirement for completely conforming to technological standards can be met, the higher requirements for the heat stability and a constant-temperature area hearth can be met, and meanwhile the consistency of the transverse temperature of the hearth and the protection property of electrical insulation of a heated object are improved.
Description
Technical field
The present invention relates to the building method of resistance heated burner hearth in coking, field of metallurgy instrument and equipment.
Background technology
With coking, continuous renewal and the development technically of metallurgy industry Laboratory Instruments equipment, although the resistance furnace development that meets the electric heating device form that processing performance requires also has the variation of different structure form, all do not have finely to meet that technological standards requires or be undesirable even at all through the checking of practical application.In for equipment such as coke reactivity (lump coke reactive), metallurgical performance reduction furnaces, on chamber structure, there is no substantial breakthrough especially.
Because most furnace thread pipes that adopt resistance wire spiral winding mode in routine application form heating furnace, but because the resistance wire life-span is shorter, so use electric furnace frequently to need often to change furnace thread pipe or resistance wire, this has brought the comparatively problem of trouble to the production work of routine experimentation chamber, has also increased spare parts consumption expense simultaneously.
And in recent years in order to improve the heating element heater life-span, start gradually to adopt the heating element heater such as Elema or Si-Mo rod to improve burner hearth, but because the physical arrangement restriction in burner hearth of the heating element heater of this clavate has very large discreteness for resistance wire canoe, especially requiring in the electric furnace of certain vertical length flat-temperature zone, in recent years on market the common requirement flat-temperature zone electric furnace with certain length do not set up flat-temperature zone at all, even if seemed sometime flat-temperature zone, but flat-temperature zone just disappears without depositing after the stable heating of certain hour.These main causes are exactly that chamber structure and electrical heating elements are not grasped due to the thermal characteristics in chamber design in the time of applied in any combination so.Though provided certain version in the GB of relevant this type of burner hearth, this not rigorous version of fact basis cannot obtain and meet the desired operational characteristic of this GB, makes on the contrary to have caused the result that cannot obtain in the application according to this GB at all.
Summary of the invention
The invention provides the Embedded hearth construction method of a kind of instrument and equipment thermal element, this method is applied in the resistance furnace that coke reactivity or metallurgical reduction furnace etc. have horizontal or vertical heat form, can realize and meet technological standards requirement completely, can meet the requirement of requirements at the higher level heat endurance and flat-temperature zone burner hearth, improve the protective of the uniformity of burner hearth transverse temperature and the electric insulation to heated object simultaneously.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of electrically heated embedded burner hearth building method for instrument and equipment, by mould molding used for refractory material, makes furnace tube, and described furnace tube inner side is provided with groove structure, embeds electrical heating elements in groove structure.Described furnace tube is the tubular structure of circular, square or other equilateral polygon section.Described groove is circular, square or other shape of mating with electrical heating elements.
Described furnace tube inside is provided with burner hearth bushing pipe, and described burner hearth bushing pipe is made up of the refractory material with certain wall thickness.Described burner hearth bushing pipe be shaped as the shape that furnace tube outside with it matches.Described burner hearth bushing pipe is divided into following two kinds of forms:
1) described burner hearth bushing pipe tube wall has cavernous structure on longitudinally, and this cavernous structure is continuous or discontinuous hole; The described burner hearth bushing pipe tube wall not position of perforate blocks on the groove of internal furnace pipe embedding heating element heater, and staggers with the groove that embeds electrical heating elements in the perforate position of burner hearth bushing pipe tube wall.Described burner hearth bushing pipe and furnace tube are Split type structure, or integrative-structure.
2) described burner hearth bushing pipe outer wall is provided with groove, and this groove shape matches with furnace tube inner wall trench, and electrical heating elements embeds in the slotted eye of burner hearth bushing pipe outer wall trench and internal furnace inside pipe wall groove composition.Described burner hearth bushing pipe and furnace tube are Split type structure, or integrative-structure.
Compared with prior art, the invention has the beneficial effects as follows:
The inventive method is applied in the resistance furnace that coke reactivity or metallurgical reduction furnace etc. have horizontal or vertical heat form, can realize and meet technological standards requirement completely, can meet the requirement of requirements at the higher level heat endurance and flat-temperature zone burner hearth, improve the protective of the uniformity of burner hearth transverse temperature and the electric insulation to heated object simultaneously.
Brief description of the drawings
Fig. 1 is the structure chart of furnace tube.
Fig. 2 is the structure cutaway view of burner hearth bushing pipe.
Fig. 2-1st, the plane outspread drawing of burner hearth bushing pipe.
Fig. 3 is the structure chart that embodiment 2 Split type structures embed electrical heating elements furnace tube.
Fig. 4 is the structure chart that embodiment 2 overall structures embed electrical heating elements furnace tube.
Fig. 5 is the structure chart that is provided with burner hearth bushing pipe in embodiment 1 furnace tube.
In figure: the 7-burner hearth bushing pipe groove 8-furnace tube through hole of 1-furnace tube 2-tube wall 3-groove 4-electrical heating elements 5-burner hearth bushing pipe 6-hole
Detailed description of the invention
Describe the specific embodiment of the Embedded hearth construction of electrical heating elements of the present invention in detail below in conjunction with accompanying drawing.
Fundamental construction approach of the present invention: as shown in Figure 1, by mould molding used for refractory material, make furnace tube 1, furnace tube cross sectional shape can be circular or square or is quadrangle and the polygon with symmetrical structure.In the uniform groove 3(accompanying drawing of the inner side of furnace tube tube wall 2, provided circular groove, but groove shape is not limited to circle, also can be square, trapezoidal or other shape that can coordinate with electrical heating elements).By electrical heating elements 4(Elema, Si-Mo rod or quartz ampoule) be embedded into and in each groove 3, form basic embedded tubulose heating furnace.
Embodiment 1: as shown in Fig. 2, Fig. 2-1, Fig. 5, for meeting the requirement of requirements at the higher level heat endurance and flat-temperature zone burner hearth, improve the protective of the uniformity of burner hearth circumferencial direction (laterally) temperature and the electric insulation to heated object simultaneously, on the basis of this essential structure furnace tube 1, the embedded burner hearth bushing pipe 5 that there is certain wall thickness and that profile and furnace tube can be combined together made from refractory material again in the heating furnace of tubulose, thus be combined into performance higher meet the electrical heating burner hearth that processing performance requires.See Fig. 2, Fig. 2-1, on burner hearth bushing pipe tube wall is longitudinal, have cavernous structure, this cavernous structure is continuous or discontinuous hole (be longitudinal discontinuous hole shown in Fig. 2-1, the shape in hole can be strip, circle or other shape); See Fig. 5, the burner hearth bushing pipe tube wall not position of perforate blocks at internal furnace pipe 1 and embeds on the groove of electrical heating elements 4, and staggers with the groove that embeds electrical heating elements in the perforate position 6 of burner hearth bushing pipe tube wall.Described burner hearth bushing pipe and furnace tube are Split type structure, or integrative-structure (Figure 5 shows that Split type structure).
Embodiment 2: as shown in Figure 3, burner hearth bushing pipe 5 is made the structure with the same groove of furnace tube 1 symmetrical expression, the outer channel 7 of burner hearth bushing pipe 5 is opened the outside at pipe, in the structural texture of burner hearth bushing pipe 5 and furnace tube 1, be exactly the symmetrical structure inside and outside cooperatively interacting, electrical heating elements 4 embeds in the slotted eye that burner hearth bushing pipe outer wall trench 7 and internal furnace inside pipe wall groove 3 form.This version (burner hearth bushing pipe and furnace tube are Split type structure) based on Fig. 3, also can select directly furnace tube 1 and burner hearth bushing pipe 5 to be made into one, thus then tube wall 2 longitudinally on open hole 8 and realize an all-in-one-piece furnace tube structure (as shown in Figure 4).
Add in electrothermal stove for burner hearth can better be suitablely arranged on, the variation of version all can be carried out as required to be combined into as organic assembly with other physiques of its outside in the two ends of internal furnace pipe 1 and burner hearth bushing pipe 5.
According to the essential structure shown in Fig. 1 or its extension as the version of Fig. 4, furnace tube can be selected according to actual electrical heating furnace burner hearth size the quantity of different groove 3 or outsourcing groove 7, has also just determined the number of embedded electrical heating elements 4 rod numbers (radical).Heat generating components Figure 1 shows that the typical structure of 12 rods, can adopt the electrical heating elements such as Elema, Si-Mo rod or quartz ampoule, as long as can embed or just form through furnace tube 1 from the opening part of groove 3 or outer channel 7 damascene structures of heater element 4.And can or install according to the version of body of heater and cold junction need to be made into various types of attachment flexibly in electrical connection for dissimilar electric heating device 4.
Specific embodiment of the invention method is described in further detail: internal furnace pipe shown in Fig. 1, Fig. 2, Fig. 3 or Fig. 4 and burner hearth bushing pipe adopt the suitable refractory material of material sizing after dry, High-temp. kiln are fired after mould molding below.Mould used can select circle or quadrangle or polygon to mold needed version as required.Refractory material requires to have the characteristic of resistance to rapid heat cycle, also will possess good thermal conductivity factor material and manufacture simultaneously.Except the version of Fig. 4, the internal furnace pipe of all the other versions and burner hearth lining pipe adopt the refractory material of unlike material to manufacture, and certainly also can adopt as required the refractory material of material of the same race to make.In the time adopting side-wall hole burner hearth bushing pipe, the edge of sidewall institute perforate can not be jagged.Burner hearth bushing pipe and internal furnace pipe finally will combine equipped, so the gap between the two is the smaller the better, may have contraction to a certain degree owing to having fired refractory, so need the shrinkage factor of test material, in equipped process, make gap evenly and there is no the phenomenon of mutual jam.
In the time adopting the integral type furnace tube of Fig. 4 form structure, the barred body of the heating element heater heating part adopting is directly through the endoporus on sidewall.And in the time adopting Fig. 1, Fig. 2 or Fig. 3 version, heating element heater not only can adopt through groove form and can also be able to adopt the versions such as U-shaped or L-type directly to be embedded wherein by the side direction of groove.
Above, be only general principle of the present invention, everyly according to the technology of the present invention principle, it carried out to equivalent variations or replacement, all within rights protection scope of the present invention.
Claims (7)
1. an electrically heated embedded burner hearth building method for instrument and equipment, by mould molding used for refractory material, makes furnace tube, it is characterized in that, described furnace tube inner side is provided with groove structure, embeds electrical heating elements in groove structure.
2. electrically heated embedded burner hearth building method for a kind of instrument and equipment according to claim 1, is characterized in that, described furnace tube inside is provided with burner hearth bushing pipe, and described burner hearth bushing pipe is made up of the refractory material with certain wall thickness.
3. electrically heated embedded burner hearth building method for a kind of instrument and equipment according to claim 2, is characterized in that, on described burner hearth bushing pipe tube wall is longitudinal, has cavernous structure, and this cavernous structure is continuous or discontinuous hole; The described burner hearth bushing pipe tube wall not position of perforate blocks on the groove of internal furnace pipe embedding heating element heater, and staggers with the groove that embeds electrical heating elements in the perforate position of burner hearth bushing pipe tube wall.
4. electrically heated embedded burner hearth building method for a kind of instrument and equipment according to claim 3, is characterized in that, described burner hearth bushing pipe and furnace tube are Split type structure, or integrative-structure.
5. electrically heated embedded burner hearth building method for a kind of instrument and equipment according to claim 2, it is characterized in that, described burner hearth bushing pipe outer wall is provided with groove, this groove shape matches with furnace tube inner wall trench, and electrical heating elements embeds in the slotted eye of burner hearth bushing pipe outer wall trench and internal furnace inside pipe wall groove composition.
6. electrically heated embedded burner hearth building method for a kind of instrument and equipment according to claim 5, is characterized in that, described burner hearth bushing pipe and furnace tube are Split type structure, or integrative-structure.
7. electrically heated embedded burner hearth building method for a kind of instrument and equipment according to claim 1, it is characterized in that, for can better being suitablely arranged on, furnace tube adds in electrothermal stove, the two ends of furnace tube and burner hearth bushing pipe all can be carried out the variation of version as required, to be combined into as organic assembly with other physique of its outside.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410133460.1A CN103940244B (en) | 2014-04-03 | 2014-04-03 | A kind of Embedded hearth construction method of instrument and equipment thermal element |
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| CN201410133460.1A CN103940244B (en) | 2014-04-03 | 2014-04-03 | A kind of Embedded hearth construction method of instrument and equipment thermal element |
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| CN103940244B CN103940244B (en) | 2015-08-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104654805A (en) * | 2014-12-29 | 2015-05-27 | 西安东瑞机械制造有限公司 | Quartz resistance tube heating element for vacuum furnace and preparation method thereof |
| CN108731480A (en) * | 2018-08-23 | 2018-11-02 | 洛阳宏达炉业有限公司 | A kind of furnace wall structure of lift electric kiln |
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| US1528542A (en) * | 1922-09-11 | 1925-03-03 | Oscar Vivian Asser | Electric furnace |
| US2294034A (en) * | 1939-06-08 | 1942-08-25 | Chemical Marketing Company Inc | Annealing furnace |
| US3128325A (en) * | 1960-06-27 | 1964-04-07 | James C Andersen | High temperature furnace |
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| CN108731480A (en) * | 2018-08-23 | 2018-11-02 | 洛阳宏达炉业有限公司 | A kind of furnace wall structure of lift electric kiln |
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| CN103940244B (en) | 2015-08-05 |
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