CN203596936U - Water-cooling protective screen used for submerged arc furnace - Google Patents
Water-cooling protective screen used for submerged arc furnace Download PDFInfo
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- CN203596936U CN203596936U CN201320782177.2U CN201320782177U CN203596936U CN 203596936 U CN203596936 U CN 203596936U CN 201320782177 U CN201320782177 U CN 201320782177U CN 203596936 U CN203596936 U CN 203596936U
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- screen
- water
- protection screen
- assembling
- screens
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- 230000001681 protective effect Effects 0.000 title abstract description 7
- 238000001816 cooling Methods 0.000 title abstract description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000003466 welding Methods 0.000 claims abstract description 26
- 229910052786 argon Inorganic materials 0.000 claims abstract description 17
- 238000013461 design Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000003490 calendering Methods 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 32
- 239000000178 monomer Substances 0.000 claims description 30
- 229910052802 copper Inorganic materials 0.000 claims description 29
- 239000010949 copper Substances 0.000 claims description 29
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 21
- 239000011707 mineral Substances 0.000 claims description 21
- 239000000498 cooling water Substances 0.000 claims description 17
- 238000005266 casting Methods 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 9
- 238000003032 molecular docking Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 239000002826 coolant Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 229910001220 stainless steel Inorganic materials 0.000 description 9
- 239000010935 stainless steel Substances 0.000 description 9
- 238000005242 forging Methods 0.000 description 6
- 241001275902 Parabramis pekinensis Species 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 231100000749 chronicity Toxicity 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a water-cooling protective screen used for a submerged arc furnace. The protective screen comprises a plurality of assembled screens successively connected; each of the assembled screens comprises two longitudinally jointed individual screens formed via argon arc welding in a direct upward coasting way; coolant galleries are formed in the individual screens; a suspending part and a water gap part are arranged on the assembled screens; and predetermined design radian is formed on each of the assembled screens after calendaring, so the assembled screens are successively connected to form the integral cylinder type water-cooling protective screen. According to the utility model, technical difficulties of frequent damage and too-short service lifetime of a steel protective screen of a submerged arc furnace caused by overcrowding weld joints are solved, and service lifetime of the protective screen is prolonged.
Description
Technical field
The utility model relates to mineral hot furnace equipment technical field, relates in particular to a kind of water-cooled protection screen for mineral hot furnace.
Background technology
Water-cooled protection screen is the vitals of producing the mineral hot furnaces such as ferroalloy, industrial silicon, calcium carbide, yellow phosphorus; it is the drum type brake device of the system of controlling under guard electrode; generally; drum type brake protection screen is made up of the identical split screen of several shapes unit; why arrange like this; be for correspondence is arranged in electrode some blocks of brasses, pressure rings around, be convenient to the maintenance of Conducting copper tile, pressure rings.After finding that brasses or pressure rings are damaged, only need pull down a split screen unit.Inside, split screen unit is provided with the circulating cooling water channel of sealing.It is circumference equal dividing integral multiple that each unit shields corresponding central angle.Its major function is to improve the operational environment of Conducting copper tile or contact element.Show as: 1, intercept the dust producing in production process and enter conductive region, guarantee the normal work between brasses or contact element and electrode; 2, stop the direct radiation brasses of charge level high temperature or contact element, and in the time that thorn fire occurs charge level, can prevent the direct calcination brasses of flame or contact element, form one protective barrier.
China constantly introduces mine heat furnace smelting advanced technology in recent years, and domestic mine heat furnace smelting technical development is very fast, and environmental protection, the power consumption threshold of China to mine heat furnace smelting also improving constantly.Starting below capacity 16500kVA is eliminated, at present at the mineral hot furnace capacity of building all more than 35000kVA, the maximum 81000kVA that reaches.The raising of mineral hot furnace capacity, also means the raising of its rate of driving, the quality of protection screen is also had higher requirement simultaneously.
At present, in production practices, the operational environment of water-cooled protection screen is very severe, and the moment is subject to erosion, high-intensity magnetic field and 1000～1400 ℃ of above hyperthermia radiations of charge level of high temperature harmful smoke, frequent generation gross distortion in service or the break fault such as leak.Main boiler steel and the stainless-steel sheet it by punch and weld of adopting of domestic electrodes in mine hot stove system protection screen.Because boiler steel, stainless steel thermal conductivity are lower, (stainless steel thermal conductivity is only 15.2W/ (m*K) 20 ℃ time, and in production process, scaling loss often appears in protection screen, and then causes blowing out to be changed.Moreover be subject to larger tension stress because protection screen cylindrical stress is concentrated, and concentrated a large amount of longitudinal seams, in the time that stress exceedes the stress of weld seam permission, weld cracking, protection screen breakage.Directly affect the operating rate of electric furnace, the indexs such as product yield, quality, cost are worsened, cause damage to normal production.In order to overcome above-mentioned defect; there is part mineral hot furnace to attempt manufacturing protection screen with forging copper coin; roll and open water channel by boring by processing state copper coin; this technique is difficult to reach the desired flow area of cooling water; cooling effect will be given a discount, the water channel that boring forms, and stock utilization is low; mechanical processing difficulty is large, too high its Difficulty that makes of material and processing cost.
Fig. 1 shows the installation site of protection screen on electrode.Electrode 1 ' and the installation relation of each parts have around been shown in Fig. 1; specifically, it is upper that water-cooled protection screen 5 ' top is mounted on the large cover 2 ' of water-cooled, and bottom rides in bottom part ring 6 '; thereby protection Conducting copper tile 4 ' and pressure rings 3 ', make it avoid the direct calcination of flame.
As everyone knows, protection screen material of the prior art mostly is boiler plate, corrosion resistant plate or forges copper coin, and steel plate bottle producing process is generally and strikes out some L-types or U-shaped plate; then assembly welding moulding; weld seam is overstocked, and leakage point too much often causes the blowing out of leaking, and electric furnace operating rate is too low.In the time using boiler steel or the inadequate stainless steel of purity to manufacture, usually can produce electronics eddy current, burn out protection screen inwall.Boiler steel, stainless steel protection screen are scrapped frequently, and without waste wood recovery value, overlapping investment is excessive.The protection screen that the forging and stamping of monoblock copper coin are manufactured processes some cooling water channels in copper coin, and not only waste of material is large, and cost is high, and technique is loaded down with trivial details, and promotional value is lower.
In order to address the aforementioned drawbacks, those skilled in the art need the water-cooled protection screen of a kind of improvement of research badly.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of water-cooled protection screen for mineral hot furnace, the technological difficulties that breakage is frequent and the life-span is too short that cause because weld seam is overstocked to solve mineral hot furnace steel protection screen, the useful life of prolongation protection screen.
For achieving the above object; the utility model provides a kind of water-cooled protection screen for mineral hot furnace; comprise: the multiple assembling screens that connect successively; each assembling screen comprises: two by the monomer screen of the argon arc welding direct up casting moulding that longitudinally docking forms; described monomer screen inside is also formed with cooling water channel; on wherein said assembling screen, be also provided with sprung parts and mouth of a river part; described assembling screen forms predetermined design radian through calendering, to make multiple assembling screens be in turn connected to form integral barrel formula water-cooled protection screen.
Further, the inside of described monomer screen is provided with the reinforcement gusset of direct up casting moulding, the cast inside cavity passing through to be formed for cooling water.
Further, described monomer screen is fine copper matter monomer screen.
Further, on assembling screen, offer respectively the jack for holding water inlet pipe, outlet pipe and locating sleeve according to design attitude and size.
Further, the position of described jack is inserted with respectively water inlet pipe, outlet pipe and locating sleeve, and adopts argon arc welding to realize welding location.
Further, described monomer screen is welded with respectively upper end riser, upper end narrow boards, upper end wide plate and bottom end plate by argon arc welding.
Further, between described two monomers screen, be formed with a longitudinal continuous weld.
Further, described assembling screen is welded with respectively connecting plate and bottom part ring connecting bolt by argon arc welding.
Further, between any two assembling screens, all connect successively by external connecting pipe, the cooling water channel in all assembling screens connects into a cooling water recirculation system.
Further, the width≤350mm of every described monomer screen.
According to the utility model, use after copper protection screen, thermal conductivity can improve greatly.Solve the protection screen that forges copper coin material and once drop into too highly, process too loaded down with trivial detailsly, the problem such as it is inadequate that cooling water channel is through-flow, reduces copper protection screen Cost Problems by up casting technique.The manufacturing process advanced person of this protection screen, weld seam is few, and sealing, thermal diffusivity are splendid, long service life.After this protection screen completes useful life, because up casting technique needs, its waste wood recovery value is very high, can drop into and manufacture new protection screen, very easily realizes waste wood again with, old for new service, and replacement cost reduces greatly.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.Wherein:
Fig. 1 is that water-cooled protection screen is arranged on the position view on electrode;
Fig. 2 a is according to the front view of monomer screen of the present utility model;
Fig. 2 b is the A-A cutaway view of Fig. 2 a;
Fig. 3 a is the structural representation of the assembling screen after being welded;
Fig. 3 b is the C-C cutaway view of Fig. 3 a;
Fig. 3 c is the vertical view of Fig. 3 a;
Fig. 3 d is the B-B cutaway view of Fig. 3 a; And
Fig. 3 e is the view of the F direction of Fig. 3 a.
Embodiment
Below, by exemplary execution mode, the utility model is specifically described.But should be appreciated that element, structure and the feature in an execution mode also can be attached in other execution mode valuably in the situation that further not narrating.
In order to solve the many deficiencies that exist in prior art; the utility model provides a kind of water-cooled protection screen for mineral hot furnace; comprise: the multiple assembling screens that connect successively; be worth being, each assembling screen comprises with pointing out: two by the monomer screen 2 of the argon arc welding direct up casting moulding that longitudinally docking forms.
As shown in Fig. 2 a-2b; described monomer screen inside is also formed with cooling water channel; on wherein said assembling screen, be also provided with sprung parts and mouth of a river part; under the effect of rolling equipment; according to the design size of drum type brake protection screen; described assembling screen forms predetermined design radian through calendering, to make multiple assembling screens be in turn connected to form the water-cooled protection screen of integral barrel formula.
Preferably, the inside of described monomer screen 2 is provided with the reinforcement gusset 12 of direct up casting moulding, to form cast inside cavity, has both guaranteed monomer screen intensity, is suitable for again cooling water and passes through.
Due in the time using boiler steel or the inadequate stainless steel of purity to manufacture, usually can produce electronics eddy current, burn out protection screen inwall.But the high-efficiency heat conduction rate of fine copper material, every magnetic, corrosion resistance, can also reduce the temperature of self effectively, improves useful life.
Be preferably, up casting blank of the present utility model is cathode copper, and described monomer screen adopts fine copper matter monomer screen.Preferably, between each fine copper matter assembling screen, add insulation cushion with stainless steel bolt and connect successively, finally form integral barrel formula protection screen.
As shown in Fig. 3 a-3e, for sprung parts and mouth of a river part are installed better, preferably, according to design attitude and size, on assembling screen, offer respectively the jack for holding water inlet pipe 1, outlet pipe 3 and locating sleeve 6.
Then, the position of described jack is also inserted with respectively water inlet pipe, outlet pipe and locating sleeve, and adopts argon arc welding to realize welding location.
Meanwhile, described monomer screen is welded with respectively upper end riser 4, upper end narrow boards 5, upper end wide plate 7 and bottom end plate 9 by argon arc welding.
It is worthy of note, by adopting the welding manner of argon arc welding, between described two monomers screen 2, be only formed with a longitudinal continuous weld 10, thereby make two monomer screens form an assembling screen, become a part for integral barrel formula protection screen.Like this, by obvious minimizing weld seam quantity, just effectively minimizing accident leakage point.
For the ease of being connected, described assembling is shielded by the mode of argon arc welding, is welded with respectively connecting plate 11 and bottom part ring connecting bolt 8.Between any two assembling screens, all connect successively by external connecting pipe, the cooling water channel in all assembling screens connects into a cooling water recirculation system.Width≤the 350mm of every described monomer screen.
The manufacture method of water-cooled protection screen is drawn equipment on mainly comprising the steps: to utilize, and up casting blank (cathode copper) is realized and drawn longitudinal continuous casting, thereby form the integral unit screen blank with preliminary dimension; Described integral unit screen blank after cast is completed becomes the monomer screen 2 of multiple same sizes along transverse cuts; Adopt argon arc welding to weld respectively upper end riser 4, upper end narrow boards 5, upper end wide plate 7 and bottom end plate 9 on monomer screen; Utilize argon arc welding longitudinally ground connection to be welded into an assembling screen every two monomers screen; Utilize rolling equipment, assembling screen is rolled and certain radian according to design radian; On assembling screen, get out respectively the jack for holding water inlet pipe 1, outlet pipe 3 and locating sleeve 6 according to design attitude and size; Be inserted into respectively water pipe, outlet pipe and locating sleeve according to the position of described jack, and adopt argon arc welding to realize welding location; Block the delivery port of assembling screen, under 0.5MPa pressure, test 20 minutes, to carry out the hydraulic test; Multiple assembling screens are in turn connected to form to integral barrel formula assembling screen.
Than the water-cooled protection screen of welding fabrication of the prior art, above draw moulding fine copper material protection screen total quality and obviously promote.Simultaneously the gusset of components interior water channel draws moulding, smooth interior standard, even tissue densification, mechanical performance high-quality on can be directly.Machining equipment used is common, simple and reliable process.Copper protection screen thermal conductivity is higher, and recirculated cooling water can be taken away heat rapidly, and then extends the working life of protection screen.Compared with forging copper coin material water-cooled protection screen, simple, the artificial input of manufacturing process, material consumption that up-drawing method is cast copper protection screen obviously reduce, and inside and presentation quality significantly improve.Price can reduce by 25% compared with forging copper coin protection screen.
Boiler steel protection screen is not every magnetic, and stainless steel protection screen also can be because corrosion resistant plate is second-rate, causes reducing every magnetic property, produces vortex phenomenon, makes protection screen operational environment more severe.Temperature raises, reduction protection screen useful life, and copper protection screen has preferably every magnetic property.
The recovery value of copper material is higher, and owing to adopting up casting technique, has saved a large amount of welding, machine work order, has also saved equipment and has manually dropped into.Use copper bottom part ring instead and copper protection screen is supporting, extend useful life simultaneously, reduces heating blowing-out number of times, increases chronicity income, and comprehensive value is fairly obvious.
The material of water-cooled protection screen of the present utility model changes cathode copper into by boiler steel, stainless steel, forging copper coin; Technique is by the machining of boiler steel, corrosion resistant plate clod wash, forging copper coin, and welding manufacture changes main part electrolysis copper product up casting into, and suspension and mouth of a river part part and main body are welded.Utilize the high-efficiency heat conduction rate of fine copper material, every magnetic, corrosion resistance, effectively reduce the temperature of self, greatly improve useful life.And waste and old protection screen recovery value is high, can greatly reduce the second investment cost, promotion prospect is wide.
Be appreciated that the utility model is described by some embodiment, those skilled in the art know, in the situation that not departing from spirit and scope of the present utility model, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present utility model, can modify to adapt to concrete situation and material and can not depart from spirit and scope of the present utility model these features and embodiment.Therefore, the utility model is not subject to the restriction of specific embodiment disclosed herein, and the embodiment within the scope of all the application's of falling into claim belongs to protection range of the present utility model.
Claims (10)
1. the water-cooled protection screen for mineral hot furnace; comprise: the multiple assembling screens that connect successively; it is characterized in that; each assembling screen comprises: two by the monomer screen of the argon arc welding direct up casting moulding that longitudinally docking forms; described monomer screen inside is also formed with cooling water channel; on wherein said assembling screen, be also provided with sprung parts and mouth of a river part, described assembling screen forms predetermined design radian through calendering, to make multiple assembling screens be in turn connected to form integral barrel formula water-cooled protection screen.
2. the water-cooled protection screen for mineral hot furnace as claimed in claim 1, is characterized in that, the inside of described monomer screen is provided with the reinforcement gusset (12) of direct up casting moulding, the cast inside cavity passing through to be formed for cooling water.
3. the water-cooled protection screen for mineral hot furnace as claimed in claim 1, is characterized in that, described monomer screen is fine copper matter monomer screen.
4. the water-cooled protection screen for mineral hot furnace as claimed in claim 1, is characterized in that, offers respectively the jack for holding water inlet pipe (1), outlet pipe (3) and locating sleeve (6) according to design attitude and size on assembling screen.
5. the water-cooled protection screen for mineral hot furnace as claimed in claim 4, is characterized in that, the position of described jack is inserted with respectively water inlet pipe, outlet pipe and locating sleeve, and adopts argon arc welding to realize welding location.
6. the water-cooled protection screen for mineral hot furnace as claimed in claim 1, is characterized in that, described monomer screen is welded with respectively upper end riser (4), upper end narrow boards (5), upper end wide plate (7) and bottom end plate (9) by argon arc welding.
7. the water-cooled protection screen for mineral hot furnace as claimed in claim 1, is characterized in that, between two described monomer screens, is formed with a longitudinal continuous weld.
8. the water-cooled protection screen for mineral hot furnace as claimed in claim 1, is characterized in that, described assembling screen is welded with respectively connecting plate (11) and bottom part ring connecting bolt (8) by argon arc welding.
9. the water-cooled protection screen for mineral hot furnace as claimed in claim 1, is characterized in that, between any two assembling screens, all connects successively by external connecting pipe, and the cooling water channel in all assembling screens connects into a cooling water recirculation system.
10. the water-cooled protection screen for mineral hot furnace as claimed in claim 1, is characterized in that, the width≤350mm of every described monomer screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320782177.2U CN203596936U (en) | 2013-12-02 | 2013-12-02 | Water-cooling protective screen used for submerged arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320782177.2U CN203596936U (en) | 2013-12-02 | 2013-12-02 | Water-cooling protective screen used for submerged arc furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596936U true CN203596936U (en) | 2014-05-14 |
Family
ID=50677789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320782177.2U Expired - Lifetime CN203596936U (en) | 2013-12-02 | 2013-12-02 | Water-cooling protective screen used for submerged arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596936U (en) |
-
2013
- 2013-12-02 CN CN201320782177.2U patent/CN203596936U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140514 |