CN201548065U - Multifunctional spray gun for steel making of electric furnace - Google Patents

Multifunctional spray gun for steel making of electric furnace Download PDF

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Publication number
CN201548065U
CN201548065U CN200920220100XU CN200920220100U CN201548065U CN 201548065 U CN201548065 U CN 201548065U CN 200920220100X U CN200920220100X U CN 200920220100XU CN 200920220100 U CN200920220100 U CN 200920220100U CN 201548065 U CN201548065 U CN 201548065U
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CN
China
Prior art keywords
oxygen
gun
spray
gun barrel
pipe
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
Application number
CN200920220100XU
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Chinese (zh)
Inventor
张成领
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUXI XICHENG SPECIAL MARINE BOARD CO Ltd
Original Assignee
WUXI XICHENG SPECIAL MARINE BOARD CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WUXI XICHENG SPECIAL MARINE BOARD CO Ltd filed Critical WUXI XICHENG SPECIAL MARINE BOARD CO Ltd
Priority to CN200920220100XU priority Critical patent/CN201548065U/en
Application granted granted Critical
Publication of CN201548065U publication Critical patent/CN201548065U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The utility model relates to a multifunctional spray gun for steel making of electric furnace, which is externally provided with a gun pipe, one end of which is provided with a gun head; the gun head is internally provided with nozzles; the gun pipe is internally provided with material spray conveying pipes which are communicated and connected with the nozzles; a cooling water circulating cavity is positioned between the material spray conveying pipe and the gun pipe; and the multifunctional spray gun is characterized in that the same gun pipe is internally provided with at least two material spray conveying pipes which are communicated and connected with the corresponding nozzles.

Description

The electric furnace steel making multifunction spray gun
Technical field
The utility model relates to the auxiliary equipment in the electric furnace steel making, specifically belongs to by jet in the stove multifunction spray gun of oxygen, pulvis and fuel of electric furnace fire door.
Background technology
The prior art that the utility model is close most is the water-cooled carbon oxygen lance, form by oxygen-blowing gun and podwer gun, every rifle has a gun barrel respectively, and gun barrel one end is provided with the rifle head, in the rifle head spout is arranged, the material spray carrier pipe that is connected with spout is set in the gun barrel, there is cooling water to follow go back to the chamber between material spray carrier pipe and the gun barrel,, installs Laval nozzle in the spray oxygen mouth of oxygen-blowing gun to realize water-cooled to robbing, Oxygen Flow is sprayed with supersonic speed, spray in the molten bath.The gun barrel that oxygen-blowing gun and dusting is robbed and rob head and do not contact with the steel molten bath is not endured thereby rifle head and gun barrel can melting loss disappear.But there is following shortcoming in above-mentioned carbon oxygen lance, it comprises lance and each cover gun barrel, rifle head and water-cooling system of podwer gun the one,, take up room greatly at stove gate, bigger to the restriction of carbon oxygen lance scope of activities in the limited space of stove gate, thereby the effective active area in molten bath is subjected to bigger restriction; Second, the consumption material is more, cost is higher, the 3rd, electric furnace is in the dozens of minutes of smelting beginning, owing to slowly heat up, electric furnace is in lower temperature, the oxygen that oxygen-blowing gun is blown into can not waste (have only furnace charge to be warmed up to rubescent state, oxygen blast just can be played the effect of effectively fluxing) with the furnace charge effecting reaction.
The utility model content
The purpose of this utility model is to design a kind ofly robs with the multi-functional spray of water-cooled at the stove gate little electric furnace steel making that takes up room, and adds in it that spray fuel-device quickens furnace charge when electric furnace steel making is begun and heats up, and strengthens the oxygen blast effect of fluxing.
The utility model includes outer gun barrel, gun barrel mouth one end is provided with the rifle head, in the rifle head spout is arranged, the material spray carrier pipe that is connected with spout is set in the gun barrel, there is cooling water to follow go back to the chamber between material spray carrier pipe and the gun barrel, at least two material spray carrier pipes that are connected with spout are installed in the same gun barrel, the carrier pipe that is connected with spout that can install delivering oxygen respectively and pulvis in same gun barrel, preferable scheme are the carrier pipes that is connected with spout that installs delivering oxygen, pulvis and fuel respectively in same gun barrel.Above-mentioned spout is called nozzle again.
Advantage of the present utility model and beneficial effect be because various material-spraying devices are arranged in the same gun barrel, with prior art adopt two independently oxygen-blowing gun compare with podwer gun, taking up room significantly reduces.Under this specific environment of electric furnace fire door narrow space, the scope of activities up and down of spray gun obtains bigger increase, thereby has enlarged the useful effect zone of spray gun.Because this multifunction spray gun can design oxygen and fuel nozzle, under every stove steel smelting cold burden state at the beginning, can start oxygen and fuel nozzle on the spray gun, steel scrap in the heating furnace, in advance and the acceleration operation of fluxing.After blowing district's steel scrap red heat, can close fuel nozzle, only depend on the cutting of supersonic speed Oxygen Flow to flux and carry out other operation.Compare with existing oxygen blowing apparatus, can shift to an earlier date 20 minutes at least and begin to flux, thereby shorten smelting cycle, reduce the heat loss of stove, thereby reach energy conservation and consumption reduction effects, and the production capacity of corresponding raising stove.Spray gun is installed on the manipulator of unique design, replaces manually-operated by machinery, alleviates labor intensity of operating personnel greatly, has improved Labor Safety.
Description of drawings
Fig. 1 is the cutaway view of the first end of the nearly rifle of the utility model;
Fig. 2 is the profile at the A-A position among the utility model Fig. 1;
Fig. 3 is the front view of the utility model application state.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
The concrete technical scheme of implementing of the utility model is:
See Fig. 1, Fig. 2, outside it gun barrel 7 is arranged, can use steel pipe manufacturing, an end of gun barrel 7 is a rifle head 8, and the spray oxygen mouth of dust mouth 3 and device oxygen jet 1 is arranged in the rifle head 8.Oxygen jet 1 is a Laval nozzle, its with said spray oxygen mouth between with being threaded.Device oxygen conveying pipe 4 and toner conveying tube 5 in gun barrel 7, oxygen cathete 4 is welded as a whole with spray oxygen mouth in the shower nozzle, and toner conveying tube 5 is connected with mouthful 3 employing spiral shell mosquitos of dusting in the shower nozzle.The oblique upper of oxygen cathete 4 installs fuel-supply pipe 9 in addition in gun barrel 7, device fuel nozzle 2 in oxygen jet 1, and fuel nozzle 2 passes the tube wall of oxygen conveying pipe 4, and communicating with fuel-supply pipe 9 is welded as a whole.
See Fig. 2, Fig. 1, in gun barrel 7, separate sleeve pipe 6 with the support means cooling water, above-mentioned oxygen conveying pipe 4, toner conveying tube 5 and fuel-supply pipe 9 are positioned within the branch spacer 6, cooling water flows into from an end of separating sleeve pipe 6, be positioned at each carrier pipe and the shower nozzle of separating sleeve pipe with cooling, flow to then and separate sleeve pipe 6 and rob the cavity of managing between 7, so constitute the chamber of following go back to of cooling water.For the thermic load that forms best spray angle and reduce the bolt head position as far as possible, rifle head and gun barrel angled (for example 120 ℃), the rifle head is made dome shape, and wherein the cutting plane shape is processed at the spout position of rifle head.Welding between one end of gun barrel 7 and the rifle head 8.
The pulvis of the utility model winding-up comprises that various carbonaceous pulvis (as coal dust, coke powder, graphite electrode powder etc.) pulverized limestone and other are metallurgical and use pulvis, and employing gas powder stream mode is carried ejection when dusting, and gas wherein can be compressed air or nitrogen.The fuel of the utility model winding-up can comprise fuel oil or combustion gas.
The utility model is installed on the hydraulically powered machine chess player, shown in parts 10-13 among Fig. 3, shower nozzle stretches into fire door, and oxygen, pulvis, fuel and cooling water connect people's oxygen conveying pipe 4, toner conveying tube 5, fuel-supply pipe 9 respectively and separate sleeve pipe 6 from the other end of the utility model gun barrel.The swing of all directions and angle by hydraulic-driven and manipulator makes rifle head of the present utility model stretch into fire door in all directions and angular movement, with material spray on demand from mouth mouth spray people molten bath.
During the carrier pipe that is connected with respective jets that delivering oxygen, pulvis and fuel respectively arranged when device in the gun barrel of the present utility model, it uses operation sequence as follows, when spray gun transmit to be arrived in the stove operating position by manipulator, oxygen valve and be opened by the purging compressed air valve in the discharge tube, ejection supersonic speed Oxygen Flow in the oxygen jet 1, meanwhile, mouthful 3 ejections of dusting purge compressed air, in case spout stops up.When needs heat when fluxing cold stock, after opening oxygen and readding, open fuel valve immediately, combustion section is from shower nozzle 2 ejections, with catching fire after the oxygen mix of ejection.The thermal-flame that produces injects directly on the steel scrap furnace charge, it is rubescent that the flame zone furnace charge is heated to very soon, the red heat steel scrap very easy with oxygen enriched flame in remaining oxygen generation oxidation reaction, and emit a large amount of chemical heat, stove around heat is passed to is rapidly trembled, and reaches the purpose of fluxing with this.After there is enough furnace charge red heat in the fire door district, get final product turn off the fuel, fuel shutoff is supplied with, and only with the oxygen rubescent furnace charge that cuts, fluxes, all melts up to furnace charge.In the smelting, for over oxidation and the reduction iron loss that reduces furnace charge, or for the making foamed slag submerged arc is smelted (the energy-conservation means of a kind of electric furnace steel making can be by spray people carbon dust in the molten bath of oxidisability, and the carbon of oxygen and spray people in the slag is reacted, generate a large amount of CO bubbles, make the slag foaming, the top of the slag goes up greatly, so that bury the electric arc of heating, thereby the thermal efficiency of electric arc heated is improved greatly), can be by mouthfuls 3 carbon dusts of in stove, jetting that dust.Furnace charge melts laggard people's refinement oxide stage, can spray people's supersonic speed Oxygen Flow in the molten steel molten bath by de laval oxygen gas jets 1, passes slag blanket and enters in the molten steel, to finish bath decarburization task.Like this, spray gun does not contact with molten steel, thereby reaches the on-consumable effect.In the spray gun winding-up process, but manipulator robot, and the driving spray gun swings, to increase active area and reaction is evenly carried out fast.During finishing blowing, close earlier fuel when using oxygen one combustion nozzle (if), close oxygen again and the air valve that dusts, and make spray gun be back to stove outer stop the rifle position.
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 improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (4)

1. electric furnace steel making multifunction spray gun, include outer gun barrel, head is robbed in gun barrel one end setting, in the rifle head spout is arranged, be provided with the material spray carrier pipe that is connected with spout in the gun barrel, have cooling water to follow go back to the chamber between material spray carrier pipe and the gun barrel, it is characterized in that, device has at least two material spray carrier pipes that are connected with respective jets in the same gun barrel.
2. spray gun as claimed in claim 1 is characterized in that, device delivering oxygen and pulvis respectively in the same gun barrel, and the carrier pipe that is connected with oxygen and pulvis spout respectively.
3. spray gun as claimed in claim 1 is characterized in that, device has delivering oxygen, pulvis and the fuel of difference in the same gun barrel, and the carrier pipe that is connected with oxygen, pulvis and fuel nozzle ports respectively.
4. by the described spray gun of claim 3, it is characterized in that, fuel nozzle ports is installed in the oxygen spout.
CN200920220100XU 2009-10-26 2009-10-26 Multifunctional spray gun for steel making of electric furnace Expired - Fee Related CN201548065U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920220100XU CN201548065U (en) 2009-10-26 2009-10-26 Multifunctional spray gun for steel making of electric furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920220100XU CN201548065U (en) 2009-10-26 2009-10-26 Multifunctional spray gun for steel making of electric furnace

Publications (1)

Publication Number Publication Date
CN201548065U true CN201548065U (en) 2010-08-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920220100XU Expired - Fee Related CN201548065U (en) 2009-10-26 2009-10-26 Multifunctional spray gun for steel making of electric furnace

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564139A (en) * 2012-03-16 2012-07-11 中国恩菲工程技术有限公司 Feeding port device for metallurgical furnace
CN105803155A (en) * 2016-05-12 2016-07-27 北京科技大学 Dephosphorization method for electric-arc furnace steelmaking

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564139A (en) * 2012-03-16 2012-07-11 中国恩菲工程技术有限公司 Feeding port device for metallurgical furnace
CN102564139B (en) * 2012-03-16 2015-02-18 中国恩菲工程技术有限公司 Feeding port device for metallurgical furnace
CN105803155A (en) * 2016-05-12 2016-07-27 北京科技大学 Dephosphorization method for electric-arc furnace steelmaking

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100811

Termination date: 20111026