CN202059607U - Radiant tube used for industrial furnace - Google Patents
Radiant tube used for industrial furnace Download PDFInfo
- Publication number
- CN202059607U CN202059607U CN2011201387259U CN201120138725U CN202059607U CN 202059607 U CN202059607 U CN 202059607U CN 2011201387259 U CN2011201387259 U CN 2011201387259U CN 201120138725 U CN201120138725 U CN 201120138725U CN 202059607 U CN202059607 U CN 202059607U
- Authority
- CN
- China
- Prior art keywords
- radiant tube
- industrial furnace
- tube shell
- electrode lead
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Resistance Heating (AREA)
Abstract
The utility model discloses a radiant tube used for an industrial furnace. The radiant tube includes a radiant tube shell, a heating unit, and a holding section. One end of the radiant tube shell is sealed, and an open end is provided with a flange. The radiant tube shell is in a straight tube shape. The heating unit is composed of two electrode lead-out rods, a plurality of ceramic space rings, and high resistance electrothermal alloy rods. The plurality of the ceramic space rings are evenly arranged along the axial direction of the radiant tube shell. The high resistance electrothermal alloy rods are inserted into the ceramic space rings and are mutually connected in series. The two electrode lead-out rods are inserted into the holding section and are connected with the two ends of the high resistance electrothermal alloy rods which are connected in series respectively. The radiant tube used for the industrial furnace is simple in structure, low in manufacturing cost, and long in service lifetime. The radiant tube used for the industrial furnace overcomes the phenomena of burning loss, short circuit, and even radiant tube breakdown.
Description
Technical field:
The utility model relates to the radiant tube that a kind of industrial furnace electric heating is used.
Background technology:
Radiant tube is a kind of heater commonly used in the industries such as metallurgy, medicine, tobacco, weaving, food, and in the prior art, the most of gaseous fuel of electric energy or high-quality that adopts of radiant tube is realized heating.Existing used for industrial furnace electric heating radiant tube; all be that the high-resistance electrothermic alloy silk is by porcelain dish insulation serial connection; use high-temperature heat-resistance steel pipe (being radiant tube) protection to combine again; the heat that resistance wire sends will be by the conduction of heat resisting steel radiant tube; radiation of burner hearth is heated; the outer burner hearth of resistance wire in the radiant tube and radiant tube must form a very big temperature difference like this; could radiate the resistance wire evolution of heat; temperature difference large radiation more is fast more; the big more resistance wire of the temperature difference is easy of more overheated scaling loss; even short circuit connects radiant tube and damages together; the radiant tube that electric heating element and heat resisting steel are made itself is exactly national rare material, costs an arm and a leg, and the main maintenance cost of industrial furnace is exactly an electrical heating elements; therefore the quality that directly influences industrial furnace useful life and the maintenance cost of electric heating element influence the ordinary production order.Chinese patent CN200920232938.0 discloses a kind of coreless electric-heating radiant tube heating device, radiant tube is originally as double ended type, at the wall thickness of furnace lining extension wall thickness greater than the burner hearth part, heat insulation in the extension with the insulation fibre pad, the two ends of radiant tube are fixed by flange and body of heater, and are isolated by insulation cushion, and binding post connects with flange, described radiant tube is a centreless electric heating radiant tube, is directly generated heat by the radiation shell burner hearth is heated.Owing to adopted centreless electric heating radiant tube, saved the heating fuse that resistance wire is made, by the direct heating of radiation shell burner hearth is heated, reduced the conduction link of heat, there are not resistance wire heater scaling loss, short circuit, even puncture the phenomenon of radiant tube, reduced manufacturing cost, reduced the maintenance cost in the actual production, also reduced because phenomenon the such as often production order brought of maintenance is undesired.But this radiant tube heater complex structure, installation and maintenance inconvenience increases production cost.
Summary of the invention:
In order to solve the defective that prior art exists, the utility model provides a kind of simple in structure, used for industrial furnace radiant tube of being convenient to installation and maintenance, effectively reduces production costs.
The technical solution used in the present invention is:
The used for industrial furnace radiant tube, comprise the radiant tube shell, heater and soaking zone, described radiant tube shell one end sealing, openend is provided with flange, described electric heating radiant tube is a straight pipe type, described radiant tube shell one end sealing, openend is provided with flange, described heater is by two electrode lead-out rods, some ceramic spacer rings and high-resistance electrothermic alloy rod are formed, some ceramic spacer rings axially evenly are provided with along the radiant tube shell, the high-resistance electrothermic alloy rod interts on ceramic spacer ring and mutual serial connection, and two interspersed soaking zones of electrode lead-out rod are connected to the high-resistance electrothermic alloy rod two ends of mutual serial connection.
Described soaking zone is provided with pull bar.
The length of described electrode lead-out rod and pull bar length should guarantee that its head stretches out outside the radiant tube shell.
The utility model is owing to adopt the high-resistance electrothermic alloy rod to be difficult for because of overheated scaling loss, and the high-resistance electrothermic alloy rod can bear higher temperature, reach as high as 1200 ℃, there are not heater scaling loss, short circuit, even the phenomenon of puncture radiant tube, reduced manufacturing cost, reduced the maintenance cost in the actual production, also reduced because phenomenon the such as often production order brought of maintenance is undesired.
The beneficial effects of the utility model: simple in structure, be convenient to installation and maintenance, production cost is low, and long service life has overcome the easy scaling loss of heater, short circuit in the prior art, even punctures the phenomenon of radiant tube.
Description of drawings
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is the structural representation that the utility model embodiment removes the radiant tube shell.
Sequence number among the figure: 1, radiant tube shell, 2, soaking zone, 3, flange, 4, electrode lead-out rod, 5, ceramic spacer ring, 6, the high-resistance electrothermic alloy rod, 7, pull bar.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further specified:
Referring to Fig. 1, Fig. 2, a kind of used for industrial furnace radiant tube, comprise radiant tube shell 1, heater and soaking zone 2, described radiant tube shell 1 is a straight pipe type, described radiant tube shell 1 one ends sealing, openend is provided with flange 3, described heater is made up of 4,14 ceramic spacer rings 5 of two electrode lead-out rods and 18 high-resistance electrothermic alloy rods 6,14 ceramic spacer rings 5 axially evenly are provided with along radiant tube shell 1, pottery spacer ring 5 comprises a card and a column, card and column can be whole, also can be splits; Card is provided with two ring through hole, 18 through holes in outer ring are used for interspersed high-resistance electrothermic alloy rod 6, interior ring through hole is used to separate electrode lead-out rod 4, high-resistance electrothermic alloy rod 6 interts on 18 through holes in ceramic spacer ring 5 outer rings and mutual serial connection, two electrode lead-out rod 4 interspersed soaking zones 2 are connected to high-resistance electrothermic alloy rod 6 two ends of mutual serial connection, described soaking zone 2 is provided with pull bar 7, and the length of the length of described electrode lead-out rod 4 and pull bar 7 should guarantee that its head stretches out outside the radiant tube shell 1.
Embodiment is just for the ease of understanding the technical solution of the utility model; do not constitute restriction to the utility model protection range; every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present utility model above scheme being done that does not break away from technical solutions of the utility model all still belongs within the utility model protection range.
Claims (3)
1. used for industrial furnace radiant tube, comprise radiant tube shell ⑴, heater and soaking zone ⑵, described radiant tube shell ⑴ is a straight pipe type, described radiant tube shell one end sealing, openend is provided with flange ⑶, it is characterized in that: described heater is by two electrode lead-out rod ⑷, some ceramic spacer ring ⑸ and high-resistance electrothermic alloy rod ⑹ form, some ceramic spacer ring ⑸ axially evenly are provided with along the radiant tube shell, high-resistance electrothermic alloy rod ⑹ interts on ceramic spacer ring ⑸ and mutual serial connection, and two interspersed soaking zone ⑵ of electrode lead-out rod ⑷ are connected to the high-resistance electrothermic alloy rod ⑹ two ends of mutual serial connection.
2. used for industrial furnace radiant tube according to claim 1 is characterized in that: described soaking zone ⑵ is provided with pull bar ⑺.
3. according to claim 1 or 2 described used for industrial furnace radiant tubes, it is characterized in that: the length of the length of described electrode lead-out rod ⑷ and pull bar ⑺ should guarantee that its head stretches out outside the radiant tube shell ⑴.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201387259U CN202059607U (en) | 2011-05-05 | 2011-05-05 | Radiant tube used for industrial furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201387259U CN202059607U (en) | 2011-05-05 | 2011-05-05 | Radiant tube used for industrial furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202059607U true CN202059607U (en) | 2011-11-30 |
Family
ID=45019569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201387259U Expired - Fee Related CN202059607U (en) | 2011-05-05 | 2011-05-05 | Radiant tube used for industrial furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202059607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102892217A (en) * | 2012-10-11 | 2013-01-23 | 江苏苏通碳纤维有限公司 | Electric heat conduction device for activated carbon fiber production |
| CN103561489A (en) * | 2013-10-24 | 2014-02-05 | 合肥科晶材料技术有限公司 | Heating module of ultra high temperature sintering furnace |
-
2011
- 2011-05-05 CN CN2011201387259U patent/CN202059607U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102892217A (en) * | 2012-10-11 | 2013-01-23 | 江苏苏通碳纤维有限公司 | Electric heat conduction device for activated carbon fiber production |
| CN103561489A (en) * | 2013-10-24 | 2014-02-05 | 合肥科晶材料技术有限公司 | Heating module of ultra high temperature sintering furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102769942A (en) | Radiant tube for industrial furnace | |
| CN207897167U (en) | A kind of industrial resistance furnace electricity consumption heating radiation pipe | |
| CN202059607U (en) | Radiant tube used for industrial furnace | |
| CN203837485U (en) | High-temperature vacuum tantalum wire heating furnace for experiments | |
| CN105960033B (en) | Heating device | |
| CN204404779U (en) | A kind of pottery isolation lead-in wire anti-deformation electron gun stove | |
| CN201414227Y (en) | Light wave type heating device for electric water heater | |
| CN204334985U (en) | Electric radiant tube heater | |
| CN101686583A (en) | Coreless electric-heating radiant tube heating device | |
| CN204031489U (en) | A kind of high power radiation pipe | |
| CN103747547A (en) | Electrical heated tube for heating furnace | |
| CN205648027U (en) | Prevent electric heating radiant tube of short circuit | |
| CN105323881A (en) | Improved heating element | |
| CN1937858A (en) | Corrosion-resistance electric heating device | |
| CN202494334U (en) | Minitype tube furnace | |
| CN1809224B (en) | Preparation method of core-less carbon fiber spiral coil electrical heating element | |
| CN101984731B (en) | Single-end quartz glass electric heating tube | |
| CN204031487U (en) | A kind of heating element of improvement | |
| CN201044517Y (en) | Bandlet carbon fiber spiral electro-heat core energy-saving quartz electric heating tube | |
| CN205074640U (en) | Heating device for stove brazes | |
| CN109495999A (en) | Radiant tube used for industrial furnace | |
| CN203761604U (en) | Electrothermal tube for heating furnace | |
| CN201499336U (en) | Heating device of coreless electric heating radiant tube | |
| CN207505160U (en) | A kind of Electrothermal bent tube | |
| CN203672149U (en) | Radiation heating furnace support device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20180505 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |