CN201605297U - Rotary heating furnace used for rolling seamless steel tubes - Google Patents
Rotary heating furnace used for rolling seamless steel tubes Download PDFInfo
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- CN201605297U CN201605297U CN201020118344XU CN201020118344U CN201605297U CN 201605297 U CN201605297 U CN 201605297U CN 201020118344X U CN201020118344X U CN 201020118344XU CN 201020118344 U CN201020118344 U CN 201020118344U CN 201605297 U CN201605297 U CN 201605297U
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- heating
- rotary heating
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Abstract
The utility model relates to a rotary heating furnace used for rolling seamless steel tubes, which belongs to the technical field of rolling seamless steel tubes. The rotary heating furnace comprises an inner furnace wall, an outer furnace wall, a furnace top and a rotating furnace bottom; a reheating zone, a heating zone and a soaking zone are arranged in a hearth according to different heating temperature requirements; the rotary heating furnace is characterized in that the reheating zone is not provided with a combustor; the heights of the furnace top of the reheating zone are not equal within 75 degrees along a circumference; and the height of the lowest position at the middle part is 45 to 55 percent that of the heating zone of the furnace top. The rotary heating furnace has the advantages that energy can be saved, smoke emission pollution can be reduced, and the manufacture cost of equipment can be reduced.
Description
Technical field
The utility model belongs to the rolling seamless steel pipe technical field, is specifically related to the rotary heating furnace that a kind of rolling seamless steel pipe is used.
Technical background
Adopted in rolling seamless steel pipe production both at home and abroad at present is rotary heating furnace more.As shown in Figure 1, the furnace roof height of this rotary heating furnace all is an equal altitudes, the inside and outside furnace wall of annular is provided with a plurality of gas burners, in the burner hearth of rotary heating furnace, be provided with preheating zone, heating zone, soaking zone and dress discharge zone successively according to the difference that Heating temperature is required, the garden dish type furnace bottom of rotary heating furnace is rotatable.Blank by the charging fire door send in the stove, be placed on the furnace bottom of rotation, reach rolling temperature by preheating zone, heating zone and soaking zone successively, again by discharging machine from the discharging of discharging fire door, enter the rolling technology flow process.The shortcoming of above-mentioned this rotary heating furnace be in the preheating zone, the furnace roof of heating zone and soaking zone is equal altitudes, it is determined by Equipment Requirement, can not be too low, cause high-temperature flue gas when preheating zone heating blank, can not be fully used.
Summary of the invention
The utility model purpose provide a kind of in preheating zone and heating zone, the unequal rotary heating furnace of furnace roof height of soaking zone, high-temperature flue gas is fully utilized when preheating zone heating blank.
The utility model is achieved in that it includes inside and outside furnace wall, furnace roof and rotatable furnace bottom, according to the different requirements to blank heating, is provided with preheating zone, heating zone, soaking zone and dress discharge zone in burner hearth.The furnace roof height that it is characterized in that heating zone, soaking zone and dress discharge zone is identical, the furnace roof height of preheating zone is inequality, the middle part lowest part is the 45-55% of heating zone furnace roof height, its both ends are tilted to heating zone, dress discharge zone furnace roof and are connected, and gas burner is not set on the furnace wall of preheating zone.By utilize the countercurrent flow of high-temperature flue gas in the burner hearth lower skim over blank surface, make the blank preheating reach the purpose of saving heat energy.
Advantage of the present invention and positively effect:
1. rotary heating furnace of the present invention because preheating zone furnace roof height has reduced, when utilizing the high-temperature flue gas countercurrent flow in the burner hearth, just more near blank surface it is heated, has therefore improved the temperature of preheating zone.Test shows, the blank temperature in the preheating zone can improve more than 150 ℃, have reduced the useless flue-gas temperature that discharges out of the furnace simultaneously, have improved the utilization ratio of high-temperature flue gas, have saved the energy.
2. because the preheating zone top construction has reduced, it is about 42% that cumulative volume in this zone has been reduced than prior art constructions, reduced the heat radiation volume widely, improved energy-saving effect, saved the processing starting material simultaneously, reduced the cost of device fabrication.
Description of drawings
Fig. 1 is the three-dimensional structure synoptic diagram behind the prior art rotary heating furnace body of heater cut
Fig. 2 is the three-dimensional structure synoptic diagram behind the utility model rotary heating furnace body of heater cut
Fig. 3 removes vertical view behind the furnace roof for Fig. 2
Fig. 4 is the expansion synoptic diagram of Fig. 3 rotary heating furnace preheating zone along the K-K section
Among the figure: ring oven wall 2,2 in the 1-'-furnace roof 3-outer shroud furnace wall
4-burner 5-furnace bottom 6-natural draught system mouth
7-charging bole 8-discharge port
A-preheating zone B-first heating zone B '-second heating zone
C-soaking zone D-furnace roof height change district E-adorns discharge zone
H-heating zone, soaking zone and dress discharge zone furnace roof height.
Embodiment:
As Fig. 2～shown in Figure 4, on the basis of prior art rotary heating furnace technology, to be set at preheating zone A along 90 ° of intervals of circumference in the burner hearth, gas burner is not set on the furnace wall in the A of preheating zone, 270 ° of intervals in addition are the first heating zone B, the second heating zone B ', soaking zone C and dress discharge zone E, the furnace roof height of preheating zone A is along being inequality in 75 ° of scopes of circumference, the height that is both sides highest point furnace roof 2 is h, middle part lowest part furnace roof height is h/2, and both ends are inclined upwardly 15 ° and are connected with furnace roof 2.
Blank enters dress discharge zone in the rotary heating furnace by charging bole 7, furnace bottom 5 by rotation reaches the temperature that rolling technology requires to preheating zone A, the first heating zone B, the second heating zone B ' and soaking zone C successively, by discharge port 8 blank is come out of the stove by discharging machine to the dress discharge zone again, change the rolling technology flow process over to.
Claims (2)
1. rotary heating furnace that rolling seamless steel pipe is used, in it includes, outer furnace wall, furnace roof and rotatable furnace bottom, in burner hearth, be provided with the preheating zone according to the difference that Heating temperature is required, the heating zone, soaking zone and dress discharge zone, it is characterized in that the heating zone, the furnace roof height of soaking zone and dress discharge zone is identical, preheating zone (A) furnace roof height is inequality, the height of middle part lowest part furnace roof (2 ') is 45～55% of heating zone (B) furnace roof (a 2) height, preheating zone lowest part furnace roof (2 ') both ends are inclined upwardly and the heating zone, dress discharge zone furnace roof (2) is connected, and burner (4) is not set on the furnace wall of preheating zone (A).
2. the rotary heating furnace that rolling seamless steel pipe according to claim 1 is used, the both ends that it is characterized in that furnace roof (2 ') are inclined upwardly 15 ° and are connected with heating zone, dress discharge zone furnace roof (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020118344XU CN201605297U (en) | 2009-12-26 | 2010-01-30 | Rotary heating furnace used for rolling seamless steel tubes |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920350240 | 2009-12-26 | ||
| CN200920350240.9 | 2009-12-26 | ||
| CN201020118344XU CN201605297U (en) | 2009-12-26 | 2010-01-30 | Rotary heating furnace used for rolling seamless steel tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201605297U true CN201605297U (en) | 2010-10-13 |
Family
ID=42950005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020118344XU Expired - Fee Related CN201605297U (en) | 2009-12-26 | 2010-01-30 | Rotary heating furnace used for rolling seamless steel tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201605297U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100635A (en) * | 2012-12-13 | 2013-05-15 | 无锡透平叶片有限公司 | Natural gas ring-revolving furnace heating forging craft of stainless steel type blade forging piece |
| CN104493059A (en) * | 2014-11-24 | 2015-04-08 | 芜湖新兴铸管有限责任公司 | Annular heating furnace and M2 high-speed steel forging method |
-
2010
- 2010-01-30 CN CN201020118344XU patent/CN201605297U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100635A (en) * | 2012-12-13 | 2013-05-15 | 无锡透平叶片有限公司 | Natural gas ring-revolving furnace heating forging craft of stainless steel type blade forging piece |
| CN104493059A (en) * | 2014-11-24 | 2015-04-08 | 芜湖新兴铸管有限责任公司 | Annular heating furnace and M2 high-speed steel forging method |
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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: 20101013 Termination date: 20150130 |
|
| EXPY | Termination of patent right or utility model |