CN203096112U - Water cooling movable carriage at preheating section of steelmaking electric furnace - Google Patents
Water cooling movable carriage at preheating section of steelmaking electric furnace Download PDFInfo
- Publication number
- CN203096112U CN203096112U CN2013201176736U CN201320117673U CN203096112U CN 203096112 U CN203096112 U CN 203096112U CN 2013201176736 U CN2013201176736 U CN 2013201176736U CN 201320117673 U CN201320117673 U CN 201320117673U CN 203096112 U CN203096112 U CN 203096112U
- Authority
- CN
- China
- Prior art keywords
- movable carriage
- water cooling
- electric furnace
- water
- steel
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The utility model relates to a water cooling movable carriage at a preheating section of a steelmaking electric furnace. The water cooling movable carriage comprises a front-end seamless steel pipe, a back-end steel plate combination and cooling waterways, wherein an arc-shaped steel plate is arranged between the front-end seamless steel pipe and a back-end steel plate; the number of the cooling waterways is two; and the front-end seamless steel pipe has the specification of phi 108*10, is made of material of 12Cr1MoVG and is a GB5310-2008 seamless steel pipe for a high-pressure boiler. The water cooling movable carriage disclosed by the utility model can solve the problem that long before the water cooling movable carriage achieves the service life of above 550 furnaces, the front-end steel pipe has longitudinal cracks and further causes water leakage. The water cooling movable carriage of the electric furnace, disclosed by the utility model, can completely meet the service life requirements of field use, achieve the service life of above 580-880 furnaces, eliminate the shutdown time for frequently performing shutdown and replacement due to abnormal water leakage of the water cooling movable carriage and further greatly improve the steelmaking yield. The cost of spare parts and the maintenance cost are greatly reduced.
Description
Technical field
The utility model relates to a kind of steel-smelting electric furnace preheating section water-cooled movable carriage.
Background technology
It is integrally welded that the front end weldless steel tube of existing water-cooled movable carriage and rear end steel plate directly link to each other, and forms tube sheet water route structure, and material generally adopts: the front end weldless steel tube is φ 114x16 seamless steel tubes and pipes for high pressure boiler 20G GB5310-2008; The rear end is boiler plate 20g GB713-2008, and the water coolant water route is the wall scroll water route, and intake-outlet is: one-in-and-one-out.
The working condition of water-cooled movable carriage: in the electrosmelting process, CONSTEEL connects the continuous fast forwarding and fast rewinding effect that dolly moves to water-cooled movable carriage front end about 1/3rd in the electric furnace and passes through to connect dolly, continuously the steel scrap through preheating is added in the electric furnace, the high-temperature flue gas that produces in the stove also enters dust-removal system by water-cooled movable carriage top simultaneously.This moment, the water-cooled movable carriage bore the high-temperature flue gas about 1000 ℃ to 1600 ℃.The smelting tapping that finishes, the electric furnace tapping of need fascinating connects dolly and carries the water-cooled movable carriage and shrink back, and all withdraws from electric furnace until water-cooled movable carriage front end, and this moment, the water-cooled movable carriage bore radiant heat in the stove about 300 ℃.Be generally tap to tap time 35 minutes, the tapping time was generally 5 minutes, and a smelting cycle was generally 40 minutes, about every day ordinary production 36 stoves.The CONSTEEL electric furnace need change tap hole and blowing out weekly once, and the time is about 5 hours respectively and 8 hours, and this moment, the water-cooled movable carriage was in the normal temperature state.In sum, water-cooled movable carriage working condition is abominable, and high and low temperature alternative is frequent, and cold and hot fatigue is serious.
CONSTEEL electrosmelting stove labour is generally about 550 stoves, requires the work-ing life of water-cooled movable carriage to reach more than the stove labour, changes stove period planning replacing water-cooled movable carriage so that utilize.But the water cooling in prior technology movable carriage uses about 180 to 300 stoves basically, and its front end weldless steel tube much vertical ring-type segmentation cracks occur and leaks, and influences and smelts and smelt the stopping production replacing of having to safely.
Why above-mentioned crackle can appear and the situation of leaking, be to form tube sheet combination water line structure because planker front end weldless steel tube and rear end steel plate directly weld, cause the weldless steel tube front side bearing high-temperature flue gas and along with the advancing, retreat of planker, it is bearing the variation that colds and heat succeed each other again.The steel pipe rear side is then surrounded by the water route of pipe internal cooling water and tube sheet formation, and it almost is not heated and does not have difference variation.So just cause the forward and backward temperature difference of front end steel pipe big, so a lot of vertically ring-type segmentation cracks of the very fast appearance in steel pipe front side and leaking.
The utility model content
For solving the problems of the technologies described above, the utility model provides a kind of good cooling results, the electric furnace water-cooled movable carriage of long service life.
The utility model is a kind of steel-smelting electric furnace preheating section water-cooled movable carriage, comprises the front end weldless steel tube, rear end steel plate molectron, and cooling water channel is provided with curved plate between described front end weldless steel tube and the rear end steel plate.
Described cooling water channel is two.
The specification of described front end weldless steel tube is: φ 108x10.
The material of described front end weldless steel tube is: 12Cr1MoVG GB5310-2008 seamless steel tubes and pipes for high pressure boiler.
Useful technique effect of the present utility model is: when having solved the water-cooled movable carriage stove being not above to work-ing lifes 550, and the problem that its front end steel pipe leaks with regard to occurring vertical segmentation crack early.Electric furnace water-cooled movable carriage of the present utility model can satisfy the on-the-spot life requirements of using fully, can reach and use more than 580 stove to 880 stoves, having eliminated leaks because of the water-cooled movable carriage the is improper furnace outage time that frequent blowing out changes of having to, thus steel-making output is significantly improved.Spare part cost and maintenance cost significantly reduce.
Description of drawings
Fig. 1: structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, the utility model is a kind of steel-smelting electric furnace preheating section water-cooled movable carriage, be mainly used in CONSTEEL steel-smelting electric furnace preheating section, comprise front end weldless steel tube 1, rear end steel plate molectron 3, cooling water channel, between described front end weldless steel tube and the rear end steel plate curved plate 2 is set, the front side and the rear side temperature difference of steel pipe are reduced greatly, steel pipe forward and backward both sides breathing is more synchronous, significantly improved work-ing life, be more than 580 stoves-880 stove work-ing life, can satisfy the on-the-spot life requirements of using fully.
Described cooling water channel is two, the water route contraction in length, and cooling performance is strengthened.As shown in Figure 1, comprise two intake-outlets, the intake-outlet of two cooling water channels is respectively intake-outlet A and intake-outlet B.
The specification of described front end weldless steel tube is: φ 108x10.Outer diameter of steel pipes reduces, and the steel pipe heating surface reduces; Pipe wall thickness reduces, and cooling performance strengthens, and then tube wall temperature reduces; Material is the 12Cr1MoVGGB5310-2008 seamless steel tubes and pipes for high pressure boiler.Its mechanical property is far above the 20G carbon constructional quality steel.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (4)
1. a steel-smelting electric furnace preheating section water-cooled movable carriage comprises the front end weldless steel tube, rear end steel plate molectron, and cooling water channel is characterized in that, between described front end weldless steel tube and the rear end steel plate curved plate is set.
2. a kind of steel-smelting electric furnace preheating section water-cooled movable carriage according to claim 1 is characterized in that described cooling water channel is two.
3. a kind of steel-smelting electric furnace preheating section water-cooled movable carriage according to claim 1 is characterized in that the specification of described front end weldless steel tube is: φ 108x10.
4. a kind of steel-smelting electric furnace preheating section water-cooled movable carriage according to claim 1 is characterized in that the material of described front end weldless steel tube is: 12Cr1MoVG GB5310-2008 seamless steel tubes and pipes for high pressure boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201176736U CN203096112U (en) | 2013-03-15 | 2013-03-15 | Water cooling movable carriage at preheating section of steelmaking electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201176736U CN203096112U (en) | 2013-03-15 | 2013-03-15 | Water cooling movable carriage at preheating section of steelmaking electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203096112U true CN203096112U (en) | 2013-07-31 |
Family
ID=48847530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201176736U Expired - Fee Related CN203096112U (en) | 2013-03-15 | 2013-03-15 | Water cooling movable carriage at preheating section of steelmaking electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203096112U (en) |
-
2013
- 2013-03-15 CN CN2013201176736U patent/CN203096112U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103643025B (en) | Method of improving toughness of novel martensite heat-resistant steel A355P91 welding seam | |
| CN103436272A (en) | Ascending pipe heat exchange device for raw gas of coke oven | |
| CN101832708A (en) | Heat storage immersed isothermal smelting furnace | |
| CN201476579U (en) | Furnace roller with novel structure | |
| CN204611770U (en) | Porous media injecting type burner | |
| CN203096112U (en) | Water cooling movable carriage at preheating section of steelmaking electric furnace | |
| CN202766547U (en) | Cast copper cooling wall without buried pipe | |
| CN102958214B (en) | The protection screen of mineral hot furnace | |
| CN203923311U (en) | A kind of long-life process furnace billet conveying roller table | |
| CN103045794B (en) | Water cooling furnace mouth and converter | |
| CN201715872U (en) | Copper cooling device of Ausmelt furnace | |
| CN105033415A (en) | 15CrMo steel welding process | |
| CN203908375U (en) | Vertical spiral grooved tube applied to tubular air preheater | |
| CN203550637U (en) | Plate-type preheating device for aluminum-fusing shaft furnace | |
| CN104928422A (en) | Repair method of blast furnace cold wall | |
| CN207581640U (en) | A kind of anti-displacement steel structure clamp device | |
| CN203594906U (en) | Three-sleeve pipe preheater | |
| CN203065506U (en) | Temperature control and cooling control device for feeding system of continuous steelmaking electric furnace | |
| CN203295520U (en) | Blast furnace and blast furnace and medium-frequency induction furnace integrated smelting system | |
| CN204694084U (en) | A kind of metal alloy smelting furnace apparatus for reusing residual heat | |
| CN214842698U (en) | Waste heat recovery system for sand washing water of steel mill | |
| CN204298320U (en) | A kind of heating system | |
| CN202187017U (en) | High air temperature air intake device for middle and small blast furnaces | |
| CN201392093Y (en) | Tunnel furnace coil type cooling hearth | |
| CN203869524U (en) | Heat recycling system for cooling pond |
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: 20130731 Termination date: 20170315 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |