CN201402058Y - High-temperature smoke gas water-cooling flue in scrap steel preheating system of electric arc furnace - Google Patents
High-temperature smoke gas water-cooling flue in scrap steel preheating system of electric arc furnace Download PDFInfo
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- CN201402058Y CN201402058Y CN2009200327376U CN200920032737U CN201402058Y CN 201402058 Y CN201402058 Y CN 201402058Y CN 2009200327376 U CN2009200327376 U CN 2009200327376U CN 200920032737 U CN200920032737 U CN 200920032737U CN 201402058 Y CN201402058 Y CN 201402058Y
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- cooled
- material basket
- preheating
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Abstract
The utility model relates to a high-temperature smoke gas water-cooling flue in a scrap steel preheating system of an electric arc furnace, which meets the conversion of material basket stations and realizes dust collection in the complete smelting process and transmission of scrap steel preheating high-temperature smoke gas. The high-temperature smoke gas water-cooling flue comprises the high-temperature smoke gas water-cooling flue and a scrap steel preheating cap; the high-temperature smoke gas water-cooling flue and the scrap steel preheating cap are arranged between a material basket rotary swinging mechanism and the upper end of a scrap steel preheating material basket mechanism at the scrap steel preheating station; the high-temperature smoke gas water-cooling flue comprises a T-type water-cooling flue which is fixed on a rotary rack, a gamma-type water-cooling flue and the scrap steel preheating cap are fixed on a supporting rack by suspension rods, the gamma-type water-coolingflue and the T-type water-cooling flue are connected by a sand seal rotating joint, and the scrap steel preheating cap which presents the type of a table taper is connected with a material basket bya sand seal.
Description
One, technical field:
The utility model relates to a kind of metallurgical equipment, especially relates to the high-temperature flue gas water-cooled flue in a kind of scrap steel preheating system for electric arc furnace, and it is suitable for the newly-built electric arc furnaces of various capacity, also is suitable for the technological transformation of existing electric arc furnaces simultaneously.
Two, background technology:
In the background technology, the high-temperature flue gas of electric furnace arrangement for producing steel discharging both at home and abroad or steel scrap preheating at present mainly contains following several mode:
| 1) | Electric arc furnaces the 4th hole | → | Expansion chamber+water-cooled flue | → | Deduster+chimney |
| 2) | Electric arc furnaces | → | Kuppe+roof cover | → | Deduster+chimney |
| 3) | Electric arc furnaces | → | Movable gas hood (dog house) | → | Deduster+chimney |
| 4) | Electric arc furnaces | → | The preheating of consteel horizontal flue steel scrap | → | Deduster+chimney |
| 5) | Electric arc furnaces | → | Shaft furnace (shaft furnace) steel scrap preheating | → | Deduster+chimney |
Wherein the 1st, 2,3 kind of form, the high-temperature flue gas of electric arc furnaces directly discharges, its physical chemistry heat directly enters atmosphere, is not utilized.
The 4th kind of form, equipment investment and factory building investment are very big, and occupation area of equipment is big, and maintenance of equipment work amount is big, and heat exchanger effectiveness is low, and pre-heat effect is undesirable, and equipment operating cost is also higher simultaneously.
The 5th kind of form, equipment investment, factory building are invested very big, and main building rail level absolute altitude is more higher, and equipment failure rate is higher, and maintenance load is big, and heat exchanger effectiveness and steel scrap pre-heat effect are relatively good.
The scrap preheater ubiquity of various types or equipment and factory building thereof investment at present is bigger than normal, and the preheating device effect is undesirable, the operating cost height; Perhaps pre-heat effect can, but factory building and equipment investment thereof are big, simultaneously equipment failure rate is higher.In a word, these steel scrap pre-heating devices all can't be implemented in the invest in the transformation of real estate that the high-temperature flue gas preheating scrap is carried out in existing old factory building workshop.
Three, utility model content:
The utility model provides the water-cooled flue of the high-temperature flue gas in a kind of scrap steel preheating system for electric arc furnace in order to solve the weak point in the above-mentioned background technology, and it satisfies the station conversion of material basket and realizes the dedusting of full smelting process and the transmission of steel scrap preheating high-temperature flue gas.
For achieving the above object, the technical solution adopted in the utility model is:
High-temperature flue gas water-cooled flue in a kind of scrap steel preheating system for electric arc furnace, it is characterized in that: comprise the pre-hot tap of high-temperature flue gas water-cooled flue and steel scrap, the pre-hot tap of high-temperature flue gas water-cooled flue and steel scrap is arranged between the steel scrap preheating material basket mechanism upper end of material basket rotary oscillation mechanism and steel scrap preheating station, the high-temperature flue gas water-cooled flue comprises T type water-cooled flue, T type water-cooled flue is fixed on the swivel mount, the pre-hot tap of Γ type water-cooled flue and steel scrap is fixed on the bracing frame by suspension rod, Γ type water-cooled flue and T type water-cooled flue link by the sand seal swivel joint, it is tapered that the pre-hot tap of steel scrap is platform, links by sand seal with the material basket.
Compared with prior art, the advantage and the effect that the utlity model has are as follows:
The utility model satisfies the station conversion of material basket and realizes the dedusting of full smelting process and the transmission of steel scrap preheating high-temperature flue gas, and is simple for structure, easy to use, the reliability height.
Four, description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model technology floor plan;
Fig. 3 is technology facade layout drawing (pre-thermal potential cross section);
Schematic diagram when Fig. 4 opens for basket at the bottom of the steel scrap preheating material basket;
Fig. 5 is the schematic diagram when basket is closed at the bottom of the steel scrap preheating material basket;
Fig. 6 is the rotary oscillation structural scheme of mechanism;
Fig. 7 is the flue gas flow figure of scrap preheater;
Fig. 8 is the process chart of scrap preheater.
Among the figure, the 1-expansion chamber, 2-connects dust pelletizing system, 3-steel scrap preheating position, the 4-backwater, 5-send water, the 6-steel scrap is accepted the position, 7-EAF station, the general material basket of 8-steelshop, 9-sand seal swivel joint, 10-Γ type water-cooled flue, 11-Γ type water-cooled flue and pre-hot tap bracing frame, 12-H type swing bracing frame, 13-T type water-cooled flue, the pre-hot tap of 14-, 15-sand seal structure, 16-steel scrap preheating material basket mechanism, 17-material basket rotary oscillation mechanism, 18-steel scrap preheating material basket mechanism, the 19-water-cooling system, 20-advances backwater, 21-material basket water-cooled piece, 22-water-cooled framework is opened bell arrangement at the bottom of the 23-, open bell arrangement at the bottom of the 24-, 25-material basket water-cooled piece running gear, 26-water-cooled taper material feeding section, 27-connects flue, and the 28-steel scrap is accepted the position, 29-material basket cooling water flexible pipe, the pin of 30-H beam connects, the 31-hoisting mechanism, and 32-H type beam is put oil cylinder, the 33-swivel mount, 34-H type beam swivel bearing, 35-rotating base, 36-steel scrap preheating position, 37-preheating scrap high-temperature flue gas water-cooled flue, the 38-drive unit.
Five, the specific embodiment:
Referring to Fig. 1, the pre-hot tap of high-temperature flue gas water-cooled flue and steel scrap mainly is made up of T type water-cooled flue 13, flue sand seal swivel joint 9, Γ type water-cooled flue 10 and the pre-hot tap 14 of steel scrap.The 13 main satisfied material basket station conversions of T type water-cooled flue also realize the dedusting of full smelting process and the transmission of steel scrap preheating high-temperature flue gas, and it is fixed on the swivel mount, changes along with the variation of preheating material basket position.The pre-hot tap 14 of Γ type water-cooled flue 10 and steel scrap is fixed on the bracing frame 12 by suspension rod, and Γ type water-cooled flue 10 and T type water-cooled flue 13 link by sand seal swivel joint 9.It is tapered that the pre-hot tap 14 of steel scrap is platform, links by sand seal with the material basket.The pre-hot tap bracing frame 11 of flue and steel scrap is a structural member, by connecting rod fixedly Γ type water-cooled flue 10 and the pre-hot tap 14 of steel scrap.If adopt single H type swing bracing frame, on bracing frame, be provided with bypass water-cooled flue and electric control valve thereof so.
Referring to Fig. 2 and Fig. 3, comprise steel scrap preheating material basket mechanism 18 and material basket rotary oscillation mechanism 17, material basket rotary oscillation mechanism 17 accepts the steel scrap preheating material basket mechanism 16 of station and steel scrap preheating station and is connected with steel scrap preheating material basket mechanism 18 with being positioned at steel scrap respectively by swing bracing frame 12, expects to be provided with high-temperature flue gas water-cooled flue 37 and the pre-hot tap 14 of steel scrap between steel scrap preheating material basket mechanism 18 upper ends of basket rotary oscillation mechanism 17 and steel scrap preheating station.The present invention amounts to three work stations, and promptly steel scrap is accepted station, and steel scrap preheating station and steel scrap add station, and the realization of above-mentioned three work stations is to rely on rotation-swing mechanism to realize successively.Capital equipment is formed and is comprised electric automatization (PLC) control system, fluid power system, steel scrap preheating material basket mechanism, material basket rotation～swing mechanism, high-temperature flue gas water-cooled flue and the pre-hot tap of steel scrap, water-cooling system, flue and the pre-hot tap bracing frame of steel scrap etc.Scrap preheater is arranged on the operating platform of electric arc furnaces, is positioned at electric arc furnaces furnace shell side, establishes three stations altogether, and steel scrap is accepted work, steel scrap preheating station and steel scrap and added station.Wherein electric automatization (PLC) control system provides the hydraulic power power supply according to the technological process requirement; Water-cooling system, temperature and flow inspection, warning; The control of hydraulic system and related valve.Hydraulic power power supply, water-cooling system, temperature and flow inspection, warning are provided; Existing control system is all adopted in the control of hydraulic system and related valve.Fluid power system is respectively the lifting of PP Pipe Compound basket, reducing etc. provides power source, fluid power system to be made up of pumping plant, valve station, fuel tank and annex thereof, adopts existing fluid power system.
Referring to Fig. 4 and Fig. 5, steel scrap preheating material basket mechanism is by column type (perhaps platform is tapered) water-cooled framework 22, water-cooled taper material feeding section 26, material basket water-cooled piece 21, bell arrangement 23 is opened at the end, material basket water-cooled piece operation (axially and radially installing) device 25, material basket water-cooled piece locking device and slave part thereof are formed, water-cooled framework 22 is column type (perhaps platform is tapered) members of being made by seamless steel pipe, and this structure is the cooled water distributor of material basket water-cooled piece on the one hand.Also being the basis that material basket water-cooled piece is fixing and move on the other hand, also is simultaneously the basis of opening bell arrangement 23 operations the end.Water-cooled taper material feeding section 26 is positioned at the top of steel scrap preheating material basket mechanism, is inverted cone-shaped structure, connects by wedge type to be fixed on the water-cooled framework 22.At the steel scrap preheating station, the pre-hot tap of water-cooled taper material feeding section 26 tops and steel scrap 14 connects by sand seal, and the bottom forms up and down with water-cooled piece 21 that dislocation connects.Material basket water-cooled piece 21 is water-cooled part (seamless pipe solid matter or plank frames), and it is fixed on the inboard of water-cooled framework, both can be by connecting rod-slide block mechanism along the axially-movable of water-cooled framework 22, and the while also can be along the radial motion of water-cooled framework 22.When the steel scrap preheating, material basket water-cooled piece 21 is at the smallest radial position and the highest axial location of water-cooled framework 22, when normally adding steel scrap in the electric arc furnaces stove and under the accident condition, at the effect blanking basket water-cooled piece 21 of electric liquid at the axial location of maximum (perhaps) radial position and minimum (perhaps) to satisfy the reinforced requirement under the accident condition.The shape that material basket water-cooled piece 21 is formed is identical with water-cooled framework 22, is column type (perhaps platform is tapered).The below that bell arrangement 23 is positioned at material basket water-cooled piece 21 is opened at the end, it is fixed on the water-cooled framework 22, closure is finished in the deadweight of dependence itself, to realize that steel scrap adds in the pan feeding basket and finishes the steel scrap preheating, it also is the outlet of flue gas after the preheating scrap simultaneously that bell arrangement 23 is opened at the end, in the time need adding the steel scrap after the preheating in the electric arc furnaces stove, finish the end by hoisting mechanism and open opening of bell.In order to guarantee dedusting and pre-heat effect, open bell arrangement 23 and be provided with sand seal structure 15 with the below of expecting basket water-cooled piece 21 at the end in addition.Material basket water-cooled piece running gear 25 is fixed on the water-cooled framework 22, finishes the displacement (radial and axial) of water-cooled piece according to technological requirement and changes, and realizes the acceptance of steel scrap and the blowing under preheating and normal and the accident condition.Material basket water-cooled piece running gear 25 is connecting rod-slide block mechanism, and connecting rod-slide block is separately fixed on water-cooled framework 22 and the water-cooled piece 21, and slideway is arranged on the water-cooled piece 21.Under the effect of electro-hydraulic actuator, displacement (radial and axial) conversion of drivening rod-slide block mechanism to finish water-cooled piece 21.Material basket water-cooled piece locking device is fixed on the water-cooled framework 22, realize that water-cooled piece 21 axial extreme higher positions reach the radially secure fixation of minimum position, structure is special-shaped eccentric wheel, has auto-lock function, and under the effect of deadweight, finish the fixing of water-cooled piece, and under the effect of electro-hydraulic actuator, finish displacement (radial and axial) conversion of locking release to satisfy the water-cooled piece of water-cooled piece.
Referring to Fig. 6, material basket rotary oscillation mechanism is made up of rotating base 35, swivel bearing 34, drive unit 38, swivel mount 33, H type swing bracing frame 12 etc.Rotating base 35 links to each other by foundation bolt with the basis of electric arc furnaces operating platform, is the basis of the rotation of material basket, swing, and it is a high strength garden column type structure.Drive unit 38 possesses auto-lock function, by driving swivel mount 33 to realize the conversion of material basket station (steel scrap is accepted station, steel scrap preheating station, steel scrap adding station).Under the state of forced outage, realize the rotation of material basket by the manual plate wheel that is provided with.Swivel mount 33 links to each other with base 35 by swivel bearing 34, and links by 30 and two (or one) H types swing bracing frames 12 of pin connection and oil cylinder thereof on top.Swivel mount 33 is high strength components, and its underpart is provided with the annular slick line device of power supply simultaneously to satisfy electric power transfer, and its top (perhaps sidepiece) is provided with Hydraulic Station, for each relevant hydraulic cylinder improves power source, to satisfy technology and operation requirement.In addition, swivel mount 33 is provided with a cover hoisting mechanism 31, to finish the unlatching of opening bell at the bottom of the material basket.H type swing bracing frame 12 bottoms connect 30 with swivel mount 33 by pin and are fixed on the swivel mount 33, and the top is provided with the cover for seat of fixing material basket gudgeon.H type swing bracing frame 12 is realized the motion of material basket vertical direction and horizontal direction by the action of oil cylinder.In addition, H type swing bracing frame also is the pipeline of material basket cooling water.
Water-cooling system provides qualified cooling water for each water cooling equipment point of scrap preheater, adopt existing water-cooling system, in view of all are the rotation mobile device with water spot, thus into backwater swivel joint be provided with at the swivel mount place, to satisfy cooling water, time requirement enterprising at slewing.
Referring to Fig. 8, during real work, the general material basket in workshop of steel scrap is housed, by driving it is allocated and transported to steel scrap and to accept station, the rotary oscillation mechanism of steel scrap preheating material basket is placed on the extreme lower position that steel scrap is accepted station automatically with steel scrap preheating material basket, the material of steel scrap preheating subsequently basket is at first accepted lime (shop, the end), next accepts the steel scrap in the material basket of workshop, the steel scrap preheating material basket that rotary oscillation mechanism will accept steel scrap rotates to preheating station, and, combine with the sand seal sealing of pre-hot tap so that realize steel scrap preheating material basket with its rising.Then, electric arc furnaces send electric smelting, the electric arc furnaces high-temperature flue gas is successively by T type water-cooled flue, Γ type water-cooled flue, sand seal swivel joint, the pre-hot tap of steel scrap and special-purpose steel scrap basket, realization is to the preheating of steel scrap, simultaneously, during double mechanism, when one of them steel scrap preheating material basket preheating scrap, rotary oscillation mechanism is placed on the extreme lower position that steel scrap is accepted station automatically with the steel scrap preheating material basket of another station, the material of steel scrap preheating subsequently basket is at first accepted lime, and next accepts the steel scrap in the material basket of workshop.After the steel scrap preheating is finished, the electric arc furnaces bell is outwarded winding, rotary oscillation mechanism reduces steel scrap preheating material basket, rotary oscillation mechanism is threaded to the steel scrap that preheating is good in the electric arc furnaces, by opening the steel scrap adding electric arc furnaces of steel scrap preheating material basket with preheating, finishes steel scrap and adds, close steel scrap preheating material basket bottom bell, rotary oscillation mechanism it is raise and whiz electric arc furnaces stove in accept station to steel scrap, bell cycle simultaneously, electric arc furnaces send electric smelting.
Referring to Fig. 7, the high-temperature flue gas of electric arc furnaces passes through the 4th hole dedusting water-cooled flue to T type water-cooled flue, high-temperature flue gas rotates the sand seal joint to Γ type water-cooled flue by T type water-cooled flue process, high-temperature flue gas by Γ type water-cooled flue to the pre-hot tap of the steel scrap of expecting the basket top, high-temperature flue gas passes steel scrap to the end of expecting the basket bottom by the pre-hot tap of steel scrap by material basket top and opens the bell side outlet, high-temperature flue gas is opened the water-cooled flue of bell side outlet to steelshop the end of by, and high-temperature flue gas arrives the expansion chamber process water-cooled flue in workshop to its deduster system.
Claims (1)
1, high-temperature flue gas water-cooled flue in a kind of scrap steel preheating system for electric arc furnace, it is characterized in that: comprise high-temperature flue gas water-cooled flue (37) and the pre-hot tap of steel scrap (14), high-temperature flue gas water-cooled flue (37) and the pre-hot tap of steel scrap (14) are arranged between steel scrap preheating material basket mechanism (18) upper end of material basket rotary oscillation mechanism (17) and steel scrap preheating station, high-temperature flue gas water-cooled flue (37) comprises T type water-cooled flue (13), T type water-cooled flue (13) is fixed on the swivel mount (33), Γ type water-cooled flue (11) and the pre-hot tap of steel scrap (14) are fixed on the bracing frame (11) by suspension rod, Γ type water-cooled flue (11) links by sand seal swivel joint (9) with T type water-cooled flue (13), it is tapered that the pre-hot tap of steel scrap (14) is platform, links by sand seal (15) with the material basket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200327376U CN201402058Y (en) | 2009-04-22 | 2009-04-22 | High-temperature smoke gas water-cooling flue in scrap steel preheating system of electric arc furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200327376U CN201402058Y (en) | 2009-04-22 | 2009-04-22 | High-temperature smoke gas water-cooling flue in scrap steel preheating system of electric arc furnace |
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| CN201402058Y true CN201402058Y (en) | 2010-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200327376U Expired - Fee Related CN201402058Y (en) | 2009-04-22 | 2009-04-22 | High-temperature smoke gas water-cooling flue in scrap steel preheating system of electric arc furnace |
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| CN (1) | CN201402058Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033916A (en) * | 2014-06-10 | 2014-09-10 | 王敏 | Testing water-cooled smoke hood |
| CN108034790A (en) * | 2018-01-18 | 2018-05-15 | 南京净环热冶金工程有限公司 | A kind of device of the preheating of raw material separate type and charging |
| CN108413775A (en) * | 2017-03-11 | 2018-08-17 | 张昌剑 | Swinging support refers to vertical shaft scrap steel preheating system |
| CN112204157A (en) * | 2017-07-31 | 2021-01-08 | Sms集团有限公司 | Scrap holding finger with cooling water supply |
-
2009
- 2009-04-22 CN CN2009200327376U patent/CN201402058Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033916A (en) * | 2014-06-10 | 2014-09-10 | 王敏 | Testing water-cooled smoke hood |
| CN104033916B (en) * | 2014-06-10 | 2016-08-24 | 江苏俊云机械科技有限公司 | Water-cooled petticoat pipe is used in test |
| CN108413775A (en) * | 2017-03-11 | 2018-08-17 | 张昌剑 | Swinging support refers to vertical shaft scrap steel preheating system |
| CN112204157A (en) * | 2017-07-31 | 2021-01-08 | Sms集团有限公司 | Scrap holding finger with cooling water supply |
| CN108034790A (en) * | 2018-01-18 | 2018-05-15 | 南京净环热冶金工程有限公司 | A kind of device of the preheating of raw material separate type and charging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xi'an Taoyuan Metallurgy Equipment Engineering Co., Ltd. Assignor: Chen Cunyun Contract record no.: 2011610000065 Denomination of utility model: High-temperature smoke gas water-cooling flue in scrap steel preheating system of electric arc furnace Granted publication date: 20100210 License type: Exclusive License Record date: 20110701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100210 Termination date: 20170422 |
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| CF01 | Termination of patent right due to non-payment of annual fee |