CN2553318Y - Resistance plate-type radiant-tube electric heater - Google Patents
Resistance plate-type radiant-tube electric heater Download PDFInfo
- Publication number
- CN2553318Y CN2553318Y CN 02239648 CN02239648U CN2553318Y CN 2553318 Y CN2553318 Y CN 2553318Y CN 02239648 CN02239648 CN 02239648 CN 02239648 U CN02239648 U CN 02239648U CN 2553318 Y CN2553318 Y CN 2553318Y
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- electric heating
- heating element
- heat
- temperature
- utility
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Abstract
The utility model relates to a strip steel continuous annealing furnace and a reducing annealing furnace used in continuous hot dip galvanizing production lines, in particular to the electric heating elements of a large vertical furnace and a horizontal furnace, belonging to the technical field of electric heating furnaces. The resistance plate radiant tube electric heater in the utility model comprises a refractory furnace tube, a plate-shaped electric heating element, a high-temperature insulated disk, a fixed pull bar, a fixed support sleeve, a connecting piece of the electric heating element, a conductor, a flange ring, a high-temperature seal ring, a flange and a shield; wherein, the electric heating element is plate-shaped and can be rolled with heat-resistant steel. The utility model has the advantages that: the utility model can work under high temperature as high as 1150 DEG C for a long time; the plate-shaped electric heating element has a large surface area, and under the same working temperature, has a heat intensity larger than that of a resistance wire electric heating element with a longer service life.
Description
Technical field
The utility model belongs to the electric furnace field, relates generally to continuous strip annealing furnace and continuous hot galvanizing reductive annealed oven, particularly the electric heating element of large-scale vertical stove and horizontal chamber furnace (oven).
Background technology
Usually cold-strip steel all will carry out annealing in process after rolling, and eliminates the work hardening phenomenon, is beneficial to the following process of steel band.In order to guarantee that steel band carries out continuous annealing and handles, annealing process generally carries out in large-scale vertical or horizontal heater.Motor-driven furnace roller all is installed between the upper and lower traveling in the vertical heater body of heater, and steel band then drives motion by furnace roller.And between the upper and lower traveling of two row steel bands, the electric heating element parallel with steel band is installed all.In horizontal chamber furnace (oven), about the steel band horizontal movement, the electric heating element parallel with steel band is installed also.Heat by electric heating element gives off is heated to required temperature with steel band, reaches the purpose of annealing.
In the prior art, the electric heater that large-scale vertical or horizontal heater adopted is resistance wire formula electric heater, but there is following shortcoming in this electric heater:
1, the resistance wire element of this electric heater when working about 1000 ℃, owing to expand with heat and contract with cold, makes the pitch of resistance wire of uneven density by equidistantly becoming, and resistance wire produces localized hyperthermia at intensive place, causes resistance wire to blow, and adds thermal break, and influence is produced.
2, because the resistance wire in this electric heater is limited by bulk, and its area of section is all relative with surface area very little, the electric thermal power of per surface area is big, causes the lost of life.And serviceability temperature only is suitable for below 1000 ℃ and works.
Summary of the invention
The purpose of this utility model be to provide a kind of can long-time running under 1150 ℃ of high temperature, the board-like radiant tube electric heater of the resistance that long service life and cost are low.
At above-mentioned purpose, the main technical schemes of the board-like radiant tube electric heater of the utility model resistance is that electric heating element is tabular formula electric heating element, a plurality of tabular formula electric heating elements pass in the installing hole of each high-temperature insulation disk, fixing between a plurality of high-temperature insulation disks by the supporting of being separated by of highly identical fixed bearing sleeve pipe, the two ends of a plurality of tabular formula electric heating elements link to each other by the electric heating element brace, steady brace by nut with the high-temperature insulation disk, tabular formula electric heating element and fixed bearing sleeve are connected into an integral body, be assemblied in the heat-resisting boiler tube, and tabular formula electric heating element links to each other with external power by the lead-in wire body again, heat-resisting boiler tube is by the flange circle, high-temperature seal ring and flange seal, and constitute the board-like radiant tube electric heater of resistance.
Now in conjunction with the accompanying drawings the utility model is elaborated
Description of drawings
Accompanying drawing 1 shows structural representation for the board-like radiant tube electric heater of the utility model resistance along cuing open of axis
Can find out that by Fig. 1, Fig. 2 the board-like radiant tube electric heater of the utility model resistance is made up of heat-resisting boiler tube 2, tabular formula electric heating element 3, high-temperature insulation disk 1, steady brace 4, fixed bearing sleeve 13, electric heating element brace 10, lead-in wire body 11, flange circle 5, high-temperature seal ring 6, flange 7 and protective cover 8; The installing hole 15 that a plurality of symmetries are arranged on the high-temperature insulation disk 1, tabular formula electric heating element 3 passes in each high-temperature insulation disk 1 corresponding installing hole 15, a plurality of high-temperature insulation disk 1 equidistant being assemblied in the heat-resisting boiler tube 2, and fixing by the supporting of being separated by of highly identical fixed bearing sleeve pipe 13.The two ends of a plurality of tabular formula electric heating elements 3 link to each other by electric heating element brace 10, steady brace 4 is connected into an integral body by nut 9 with high-temperature insulation disk 1, tabular formula electric heating element 3 and fixed bearing sleeve 13, be assemblied in the heat-resisting boiler tube 2, tabular formula electric heating element 3 links to each other with external power by lead-in wire body 11,2 in heat-resisting boiler tube seals by flange circle 5, high-temperature seal ring 6 and flange 7, constitutes the board-like radiant tube electric heater of the utility model resistance.The board-like radiant tube electric heater of this resistance then is fixed on the body of heater table body 16 of vertical heater by bolt 14, is installed on two bodies of wall 12 of heating furnace.Tabular formula electric heating element can be by the heat resisting steel roll forming.
In addition, 17 is the boron nitride felt pad among the figure, the cotton dottle pin layer of 18 fire-resistant lines.
The board-like radiant tube electric heater of the utility model resistance is applicable to band steel large-scale vertical or horizontal continuous furnace, and the utility model can long-time running under 1150 ℃ of temperature.
Compared with prior art, the utlity model has following advantage:
(1) operating temperature height can long-term work under 1150 ℃ of temperature.
(2) plate type electric heating element surface area is big, and the cross section is big, under the identical operating temperature its calorific intensity greater than the resistance wire type electric heating element, surperficial power load≤2W/cm2, so its long service life.
(3) the plate type electric heating element adopts the heat-resisting steel sheet and plate roll forming, so processing cost is low.
(4) install and change conveniently.
Claims (2)
1, the board-like radiant tube electric heater of a kind of resistance comprises heat-resisting boiler tube and electric heating element, it is characterized in that:
1. electric heating element is a tabular formula electric heating element (3);
2. the board-like radiant tube electric heater of this resistance is by heat-resisting boiler tube (2), and tabular formula electric heating element (3), high-temperature insulation disk (1), steady brace (4), fixed bearing sleeve (13), electric heating element brace (10), lead-in wire body (11), flange circle (5), high-temperature seal ring (6), flange (7) and protective cover (8) are formed; There are installing hole (15), the tabular formula electric heating element (3) of a plurality of symmetries to pass in the last corresponding installing hole (15) of each high-temperature insulation disk (1) on the high-temperature insulation disk (1), a plurality of high-temperature insulation disks (1) are equidistant to be assemblied in the heat-resisting boiler tube (2), and fixing by the supporting of being separated by of highly identical fixed bearing sleeve (13); The two ends of a plurality of tabular formula electric heating elements (3) link to each other by electric heating element brace (10), steady brace (4) is connected into an integral body by nut (9) with high-temperature insulation disk (1), tabular formula electric heating element (3) and fixed bearing sleeve (13), be assemblied in the heat-resisting boiler tube (2), tabular formula electric heating element (3) joins by lead-in wire body (11) and external power, heat-resisting boiler tube (2) then seals by flange circle (5), high-temperature seal ring (6) and flange (7), constitutes the board-like radiant electric heater of the utility model resistance.
2,1 described electric heater as requested is characterized in that tabular formula electric heating element (3) can be by the heat resisting steel roll forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02239648 CN2553318Y (en) | 2002-07-08 | 2002-07-08 | Resistance plate-type radiant-tube electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02239648 CN2553318Y (en) | 2002-07-08 | 2002-07-08 | Resistance plate-type radiant-tube electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2553318Y true CN2553318Y (en) | 2003-05-28 |
Family
ID=33712977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02239648 Expired - Fee Related CN2553318Y (en) | 2002-07-08 | 2002-07-08 | Resistance plate-type radiant-tube electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2553318Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441057C (en) * | 2003-07-03 | 2008-12-03 | 桑德维克知识产权股份公司 | A method and an arrangement for supporting vertically depending electrical resistance elements |
| CN101749518B (en) * | 2008-12-02 | 2011-04-20 | 中国石油天然气股份有限公司 | Infrared heater for coated joints of pipelines |
| CN102200393A (en) * | 2011-06-21 | 2011-09-28 | 中国电子科技集团公司第二研究所 | Vacuum heating equipment |
| CN103512371A (en) * | 2013-10-16 | 2014-01-15 | 江苏丰东热技术股份有限公司 | Fixing device for heater |
| CN107517504A (en) * | 2016-06-15 | 2017-12-26 | 上海韵申新能源科技有限公司 | A kind of shell-and-tube hollow bushing resistance heater |
-
2002
- 2002-07-08 CN CN 02239648 patent/CN2553318Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441057C (en) * | 2003-07-03 | 2008-12-03 | 桑德维克知识产权股份公司 | A method and an arrangement for supporting vertically depending electrical resistance elements |
| CN101749518B (en) * | 2008-12-02 | 2011-04-20 | 中国石油天然气股份有限公司 | Infrared heater for coated joints of pipelines |
| CN102200393A (en) * | 2011-06-21 | 2011-09-28 | 中国电子科技集团公司第二研究所 | Vacuum heating equipment |
| CN103512371A (en) * | 2013-10-16 | 2014-01-15 | 江苏丰东热技术股份有限公司 | Fixing device for heater |
| CN107517504A (en) * | 2016-06-15 | 2017-12-26 | 上海韵申新能源科技有限公司 | A kind of shell-and-tube hollow bushing resistance heater |
| CN107517504B (en) * | 2016-06-15 | 2023-08-04 | 上海韵申新能源科技有限公司 | Shell-and-tube hollow sleeve resistance heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |