CN201147845Y

CN201147845Y - Continuous casting ladle oxygen ignitor

Info

Publication number: CN201147845Y
Application number: CNU2008200549610U
Authority: CN
Inventors: 杨建华; 冯长宝; 袁威; 朱伟勇; 段明南
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2008-01-22
Filing date: 2008-01-22
Publication date: 2008-11-12
Anticipated expiration: 2018-01-22

Abstract

The utility model elates to a continuous casting ladle roasted oxygen igniter which comprises a main body and a snap spring; the main body is a cylindrical structure with two open ends, the inner wall is provided with a step to form two pore canals in an inner cavity, wherein, one is a main pore canal and the other is an inner pore canal; the inner diameter of the main pore canal is less than the inner diameter of the inner pore canal; the side wall of the step is also provided with a side pore canal communicated with the inner cavity; the snap spring comprises a fixed part, a connecting part bending and extending from the fixed part and a clip part extending from the connecting part; wherein, the fixed part is arranged on the port on one side of the inner pore canal of the main body; the connecting part and the clip part extend into the inner pore canal of the main body; the clip part rejects to the step on the inner wall of the main body. The continuous casting ladle roasted oxygen igniter is arranged on the head of an oxygen pipe, can greatly improve the oxygen roasting efficiency and success rate, prevents the logistics mess and abnormal accidents, and improves the continuous casting number of heat of a tundish and the operation rate of a casting machine.

Description

A kind of continuous casting ladle burns the oxygen point firearm

Technical field

The utility model relates to a kind of continuous casting installation for casting, and particularly ladle is opened and watered the continuous casting ladle burning oxygen point firearm that the drainage of burning oxygen is used on the continuous casting ladle turret.

Background technology

The pour steel of conticaster is the blast-melted qualified molten steel of composition by being produced after converter smelting and the follow-up refining, loads handling to the revoliving arm of continuous casting ladle turret by ladle (abbreviation ladle), and panoramic table goes to position to be poured with ladle.Before ladle splendid attire molten steel, the operative employee throws in the steel ladle pouring mouth according to the ladle situation and fills out drainage sand or iron nail bits, its objective is to prevent impact and the thermal etching of high-temperature molten steel to the anti-material of steel ladle pouring mouth.As shown in Figure 1, when this ladle 10 forwards the cast position to, when opening slide gate nozzle 20 cast, often take place to cause the failure of ladle automatic casting because drainage sand through high temperature sintering, can't flow down automatically.Water that the steel operative employee needs will to connect oxygen immediately and the head 301 of the oxygen hose 30 lighted stretches into steel ladle pouring mouth 20 this moment, soften the sinter layer of drainage sand, make the drainage sand flow go out the sprue gate, flow out until molten steel by the combustion high temperature of oxygen rod.This operation is called ladle at steel mill and burns the oxygen operation.

At present, the difficult point that big package operation carries out the operation of ladle burning oxygen mainly is to light the oxygen rod, this with rubber tube or the igniting of big paper tube mode since can't fix and light a fire the time direction of flame be unfavorable for around the head of oxygen rod, producing high temperature, generally need 2～3 fens clock times, add the time of burning oxygen, multipotency burns three of oxygen continuously within 10 minutes, but burning oxygen for three times often can't boiled ladle mouth 2, and the actual burning oxygen duration that continuous casting process allows can not surpass 10 minutes at most, and most of time control that needs point to burn oxygen had only about 7 minutes.In case burn the oxygen overlong time, will cause following consequence:

The tundish temperature drop of preheating was very fast when 1, the centre was unwrapped and watered first stove or tundish and change, even boiled ladle, because the tundish heat absorption is serious, also can't continue cast, tundish preheating again must be opened later in 15 minutes again and be watered operation, but the ladle molten steel temperature of strict configuration because natural temperature drop often can't satisfy the cast requirement again, need be returned refining and carry out OB intensification (this situation accounts for more than 50% of ladle foldback) after 15 minutes;

2, the tundish molten steel is poured into a mould necessary reduction of speed even is shut down wait owing to can not get replenishing immediately, has had a strong impact on stability and the casting quality produced;

3, ladle that can't be boiled often need to carry out OB heat up, ladle-to-ladle, melt down operation, seriously disturbed the normal direct motion of logistics, reduced the production operational availability of casting machine, simultaneously, through the molten steel handled again often because of crossing the reason of handling, the quality degradation;

4, even more serious is that the igniting of present oxygen rod needs multi agent cooperation, greatly labor intensity of operating personnel of Zeng Jiaing and security threat, the operation sequence of seriously having upset the operative employee, once took place several times after ladle burns the oxygen failure, the ladle slide plate is forgotten the incident that just sends processing of closing, and causes major accident.

Goal of the invention

The purpose of this utility model is to provide a kind of continuous casting ladle to burn the oxygen point firearm, be installed on the oxygen hose head, can improve the efficient and the success rate of burning oxygen greatly, avoid the confusion of logistics and abnormal accident to take place, the operating rate of stove number and casting machine equipment waters in the company of having improved tundish.

For achieving the above object, the technical solution of the utility model is,

A kind of continuous casting ladle burns the oxygen point firearm, comprises, and body, it is the tubular structure of a both ends open, and inwall is established a step, makes inner chamber form two ducts, and one of them is main pore road, and another is an inner duct; Main pore road internal diameter is less than the inner duct internal diameter; Step place sidewall also has the side pore road that connects with inner chamber; Jump ring, it comprises fixed part, extends to form connecting portion and from holding section that connecting portion extends to form from fixed part bending; Wherein fixed position is in the port part of body inner duct one side; Connecting portion and holding section are stretched in the body inner duct, and the holding section is resisted against the inner body wall step.

Again, described jump ring holding section is the polyline shaped structure.

In addition, described body adopts combustible material to make, as papery.

When needs burn oxygen, only need the utility model is inserted into the head of oxygen rod, oxygen rifle head is stretched into the steel ladle pouring mouth, open oxygen valve (low discharge), can within 10～30 seconds, light the oxygen rod, open big oxygen flow then, implement to burn the oxygen operation; Igniter simultaneously made of paper disappears automatically because of burning, and is pollution-free.Also can outside the steel ladle pouring mouth, light a fire earlier, then the oxygen rod of lighting be stretched into the steel ladle pouring mouth and burn oxygen.Owing to shorten greatly duration of ignition of oxygen hose, operate also easily, can guarantee efficiently to burn oxygen, the probability that burns not open is wrapped in reduction greatly greatly.

During operation, the head of earlier the tube hole of igniter being aimed at oxygen hose inserts, and contacts the step of inside, upper paper tube hole up to the head of oxygen hose.(tundish clad or steel ladle pouring mouth inside are opened oxygen valve (in a small amount) again, and Oxygen Flow produces high temperature rapidly by the combustion front of oxygen enrichment pipe point of arrival firearm, lights the oxygen rod near burning things which may cause a fire disaster with igniter.

The beneficial effects of the utility model

By adopting the igniter of the utility model band tap hole, can improve the efficient and the success rate of burning oxygen greatly, avoided the confusion of logistics and abnormal accident to take place, the operating rate of stove number and casting machine equipment waters in the company of having improved tundish.

Can implement in 10 minutes to burn oxygen more than 6, boiled rate remains on 100% substantially, has improved burning oxygen operating rate and successful efficient greatly, when reducing the follow-up equipment stand-by period, has saved the oxygen demand of burning oxygen greatly; And the burning oxygen success rate of original burning oxygen mode remains on 95% level, ladle that can't be boiled need return OB and heat up, not only cause continuous casting working procedure to interrupt, and because alloy scaling loss, the energy resource consumption that OB causes, the anti-material of tundish, preheating gas loss etc. all are difficult to calculate.

The utility model has reduced burning oxygen risk, and greatly reduces burning oxygen amount, and economic benefit is considerable.

Description of drawings

Fig. 1 burns oxygen point fire schematic diagram for existing ladle;

Fig. 2 is the structure cutaway view of the utility model one embodiment;

Fig. 3 is the A-A cutaway view of Fig. 2;

Fig. 4 is the structural representation of the utility model jump ring;

Fig. 5 is a user mode schematic diagram of the present utility model.

The specific embodiment

Referring to Fig. 2～Fig. 4, continuous casting ladle of the present utility model burns the oxygen point firearm, comprises body 1, jump ring 2,2 ';

Body 1, paper material, it is the tubular structure of a both ends open, and inwall is established a step 11, makes inner chamber form two ducts, and one of them duct is main pore road 12, and another duct is an inner duct 13; Main pore road 12 internal diameters are less than inner duct internal diameter 13; Step 11 place's sidewalls also have the side pore road 14 that connects with inner chamber;

Jump ring 2, it comprises fixed part 21, extends to form the holding section 23 that connecting portion 22 reaches from connecting portion 22 extends to form from fixed part 21 bendings; Wherein fixed part 21 is positioned at the port part of body inner duct 13 1 sides; Connecting portion 22 and holding section 23 are stretched in the body inner duct 13, and holding section 23 is resisted against body 1 inwall step 11; This holding section 23 is the polyline shaped structure.

Referring to Fig. 5, when the head 31 of oxygen enrichment pipe 3 inserts the utility model made of paper, oxygen enrichment pipe 3 heads 31 are conflicted with the step 11 of body 1 inside, guaranteed the accurate location between oxygen enrichment pipe 3 and the body 1, and block the head 31 of oxygen enrichment pipe 3 with jump ring 2, guarantee to keep certain interval between oxygen enrichment pipe 3 lateral walls and the body 1 inner duct internal diameter 13.

Side pore road 14 is used to introduce the shunting of burning things which may cause a fire disaster and oxygen, so just can reach the purpose of oxygen shunting, no matter have or not obstacle at the front end of igniter, igniter is run into Mars and burning rapidly under the effect of pure oxygen, and produce high temperature in head position moment of oxygen rod, light the oxygen rod.

Through lifting after the refining to the first-class ladle to be cast 1 of conticaster upper end ladle turret, it is lifted to the cast position, opening ladle 1 bottom opens and waters slide gate nozzle 2, after ladle 1 bottom tapping hole 2 can't be realized automatic casting, the oxygen rod 3 that the utility model igniter will be installed immediately stretches to the inside at ladle 4 sprue gates 5, and the oxygen of jetting.Because the drainage sand temperature of the inner sintering in sprue gate is very high, igniter takes fire after extending into inside, adds that the oxygen that blows out in the oxygen rod produces high temperature at the head of oxygen rod 3, lights oxygen rod 3, the high temperature that 3 burnings of oxygen rod produce with the drainage sand fusing of sintering, is finished and is burnt the oxygen operation again.

In addition, the utility model material adopts pure pulp, finishes the burning rapidly of igniting back, and combustion residue flows into the continuous casting tundish with molten steel, after can timely protected slag adsorbed, slab quality and environmental pollution are not all had influence.

Claims

1. a continuous casting ladle burns the oxygen point firearm, it is characterized in that, comprise,

Body, it is the tubular structure of a both ends open, and inwall is established a step, makes inner chamber form two ducts, and one of them is main pore road, and another is an inner duct; Main pore road internal diameter is less than the inner duct internal diameter; Step place sidewall also has the side pore road that connects with inner chamber;

Jump ring, it comprises fixed part, extends to form connecting portion and from holding section that connecting portion extends to form from fixed part bending; Wherein fixed position is in the port part of body inner duct one side; Connecting portion and holding section are stretched in the body inner duct, and the holding section is resisted against the inner body wall step.

2. continuous casting ladle as claimed in claim 1 burns the oxygen point firearm, it is characterized in that described jump ring holding section is the polyline shaped structure.

3. continuous casting ladle as claimed in claim 1 burns the oxygen point firearm, it is characterized in that, described body adopts combustible material to make.

4. continuous casting ladle as claimed in claim 1 burns the oxygen point firearm, it is characterized in that described body is a papery.