CN208815059U - A kind of VOD vacuum oxygen refining furnace oxygen lance mouth automatic switch protective device - Google Patents
A kind of VOD vacuum oxygen refining furnace oxygen lance mouth automatic switch protective device Download PDFInfo
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- CN208815059U CN208815059U CN201821577859.9U CN201821577859U CN208815059U CN 208815059 U CN208815059 U CN 208815059U CN 201821577859 U CN201821577859 U CN 201821577859U CN 208815059 U CN208815059 U CN 208815059U
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- oxygen
- sealing plate
- bracket
- protective device
- refining furnace
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Abstract
The utility model discloses a kind of VOD vacuum oxygen refining furnace oxygen lance mouths to be automatically switched protective device, including bracket, it is rotatably installed on bracket for blocking the sealing plate of oxygen rifle mouth, it connect the weight for driving sealing plate automatic plugging with sealing plate and is arranged on bracket for limiting the position-limit mechanism in door open structure direction, bracket includes top plate and four supporting legs that side under the top plate is arranged, the through-hole to match with the shape of sealing plate is offered on top plate, the side of sealing plate is provided with convex block, the other side level of sealing plate is fixedly installed with articulated shaft, the horizontal hinged axle sleeve being fixedly installed with for articulated shaft installation on top plate.The utility model, which can be realized, to automatically open and closes to the oxygen rifle mouth that vacuum refractory material covers, it can prevent from the molten steel of splash from dripping to block the oxygen injection port of oxygen rifle, the problem of causing oxygen rifle to be burned leak, improves oxygen blast efficiency and decarburization efficiency of molten steel, and using effect is good.
Description
Technical field
The utility model belongs to VOD refining furnace technical field, and in particular to a kind of VOD vacuum oxygen refining furnace oxygen lance mouth from
Dynamic switching protective device.
Background technique
Steel and iron industry is the important foundation industry of national economy, is the foundation stone of state.For a long time, steel and iron industry is built for country
If provide important raw material guarantee, powerful support related industry development has pushed China's industrialization, modernization,
Promote people's livelihood improvement and social development." 13 " steel and iron industry adjustment upgrade programming (2016~the year two thousand twenty) explicitly points out
Production capacity, the production mended short slab, encourage clean steel, high strength steel.
VOD (Vacuum Oxygen Decarburization) vacuum oxygen refining furnace is to be blown under vacuum conditions
The external refining furnace of oxygen decarburization is that electric furnace, converter or first steel-making water through LF refining furnace are placed in vacuum tank, in vacuum state
Under, oxygen blast gas carries out decarburization, while one be stirred in steel ladle bottom blowing argon gas to molten steel to molten steel at the top of steel ladle
Kind molten steel vacuum processing method.It is to refine based on the clean steels such as chromium nickel stainless steel, ultra-low-carbon steel, super-purity ferrite stainless steel.
As shown in Figure 1, the vacuum tank cavity of VOD vacuum oxygen refining furnace is collectively constituted by tank body 7-1 and cover 7-2, and
Steel ladle support 7-3 is provided in tank body 7-1, steel ladle 8-1 is mounted on steel ladle support 7-3, the top peace of steel ladle 8-1
Equipped with vacuum refractory material lid 8-2, at this point, the steel ladle 8-1 equipped with molten steel 9 is placed between tank body 7-1 and cover 7-2 and is formed
Vacuum chamber, the bottom of steel ladle 8-1 are provided with the argon gas blowing device 11 for the blowing argon gas into steel ladle 8-1, and the one of tank body 7-1
Side is provided with the vacuum evacuation device 12 for being vacuumized to vacuum chamber, is provided on vacuum refractory material lid 8-2 for oxygen rifle
The 10 oxygen rifle mouths passed through, oxygen rifle 10 pass through oxygen rifle mouth oxygen blast into steel ladle 8-1, the work of VOD vacuum oxygen refining furnace
Principle are as follows: under vacuum conditions, molten steel 9 is stirred by way of blowing argon gas into molten steel 9 in the bottom of steel ladle 8-1
It mixes, and vacuum shape is carried out to molten steel 9 in a manner of the flow velocity oxygen blast gas of the 2-3 times of velocity of sound into molten steel 9 from the top of steel ladle 8-1
Oxygen decarburization under state to reduce the hydrogen content in molten steel, carbon content etc., while being reacted using slag interface and carrying out desulfurization process.
But in actual use, under vacuum conditions, oxygen rifle 10 is in scorching hot steel ladle 8-1 after oxygen blast, if after
It when continuous depth vacuumizes, is easy to appear oxygen rifle and is burned leak, and lead to the generation of safety accident, moreover, the stirring in argon gas of molten steel 9
It mixes, while under the action of vacuumize by force again, being easy to make the molten steel 9 of splash to block oxygen rifle mouth, causing to produce abnormal or even leak
Explosion accident occurs into molten steel 9, meanwhile, it is easy to appear that oxygen blast low efficiency, energy loss are big, serious waste of resources, molten steel 9 are de-
Therefore the problems such as carbon efficiencies bottom or molten steel 9 cannot achieve decarburization at all is blocked, oxygen rifle quilt to solve the oxygen injection port of oxygen rifle
The problem of burning out leak eliminates safe hidden trouble, it should install a kind of automatic switch protection in VOD vacuum oxygen refining furnace oxygen lance mouth
Device.
Utility model content
The technical problem to be solved by the utility model is in view of the deficiency of the prior art, provide a kind of VOD
Vacuum oxygen refining furnace oxygen lance mouth is automatically switched protective device, and simple structure and reasonable design can be realized to vacuum fire proofed wood
Expect that the oxygen rifle mouth covered is automatically opened and closed, can prevent the molten steel of splash from dripping and block the oxygen injection port of oxygen rifle, cause oxygen rifle
The problem of being burned leak, improves oxygen blast efficiency and decarburization efficiency of molten steel, and using effect is good.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of VOD vacuum oxygen refining furnace oxygen
Muzzle is automatically switched protective device, it is characterised in that: including bracket, rotational installation on the bracket for blocking oxygen rifle mouth
Sealing plate connect the weight for driving the sealing plate automatic plugging with the sealing plate and is arranged on the bracket for limiting institute
State the position-limit mechanism in door open structure direction, the bracket includes top plate and four supporting legs being arranged in below the top plate, described
The through-hole to match with the shape of the sealing plate is offered on top plate, the side of the sealing plate is provided with convex block, the sealing plate
Other side level is fixedly installed with articulated shaft, the horizontal articulated shaft being fixedly installed with for articulated shaft installation on the top plate
Set.
A kind of above-mentioned VOD vacuum oxygen refining furnace oxygen lance mouth is automatically switched protective device, it is characterised in that: the weight
L-type connecting rod including tup and for connecting the tup Yu the articulated shaft.
A kind of above-mentioned VOD vacuum oxygen refining furnace oxygen lance mouth is automatically switched protective device, it is characterised in that: described hinged
The quantity of axle sleeve is two, and two hinged axle sleeves are symmetrically laid in the two sides of through-hole.
A kind of above-mentioned VOD vacuum oxygen refining furnace oxygen lance mouth is automatically switched protective device, it is characterised in that: the limit
Mechanism includes the gag lever post being arranged in above the convex block and is mounted on the support that gag lever post both ends are used to support the gag lever post.
A kind of above-mentioned VOD vacuum oxygen refining furnace oxygen lance mouth is automatically switched protective device, it is characterised in that: the support
For U-shaped baffle ring, the both ends of the gag lever post are respectively and fixedly installed in the U-lag of the U-shaped baffle ring.
Compared with the prior art, the utility model has the following advantages:
1, the utility model passes through setting bracket, and the sealing plate for blocking oxygen rifle mouth, bracket are rotatablely installed on bracket
Including top plate and four supporting legs, the through-hole to match with the shape of sealing plate is offered on top plate, when actual installation, be located at through-hole
The closure to oxygen rifle mouth is realized, when sealing plate opens through-hole, i.e., when sealing plate blocks through-hole in the surface of oxygen rifle mouth
Realize the opening to oxygen rifle mouth；When oxygen rifle moves downwardly through through-hole, the end of oxygen rifle pushes sealing plate, makes sealing plate to steel ladle
Inside is opened, and when oxygen rifle, which moves up, exits through-hole, oxygen rifle fades away to the motive force of sealing plate, by connecting on sealing plate
Weight, under the gravity of weight, sealing plate be can be automatically closed；Using this automatic switch protective device oxygen rifle oxygen injection port
When stopping spray oxygen, it can prevent the molten steel of splash from dripping the problem of blocking, oxygen rifle is caused to be burned leak the oxygen injection port of oxygen rifle,
Oxygen blast efficiency and decarburization efficiency of molten steel are improved, using effect is good.
2, the utility model can limit the opening direction of sealing plate by the way that position-limit mechanism is arranged on bracket, make sealing plate only
It can be opened under the action of oxygen rifle pushes to the inside of steel ladle, when oxygen rifle, which moves up, exits steel ladle stopping oxygen blast,
Sealing plate cannot be opened to the outside of steel ladle under the gravity of weight, can be only in horizontal position and close through-hole.
3, articulated shaft is fixedly mounted by the other side level in sealing plate in the utility model, and the horizontal fixed peace on top plate
Fill hinged axle sleeve install for articulated shaft, by the articulated connection of articulated shaft and hinged axle sleeve, thus realize sealing plate and top plate it
Between rotation connection, connection is reliable, rotation flexibly, using effect is good.
4, for the utility model by simple structure and reasonable design, manufacturing cost is low, easy to promote and utilize.
In conclusion the utility model simple structure and reasonable design, can be realized the oxygen rifle covered to vacuum refractory material
Mouth is automatically opened and is closed, and can be prevented the molten steel of splash from dripping and be blocked the oxygen injection port of oxygen rifle, oxygen rifle is caused to be burned leak
Problem, improves oxygen blast efficiency and decarburization efficiency of molten steel, and using effect is good.
Below by drawings and examples, the utility model is further described in detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the prior art.
Fig. 2 is the structural schematic diagram of the utility model.
Fig. 3 is the utility model door open structure status diagram.
Fig. 4 is the utility model sealing plate sealed condition schematic diagram.
Fig. 5 is the structural schematic diagram of the utility model top plate.
Fig. 6 is the connection relationship diagram of the utility model sealing plate and articulated shaft.
Fig. 7 is the use state diagram of the utility model.
Description of symbols:
1-1-supporting leg；1-2-top plate；2-sealing plates；
2-1-convex block；2-2-articulated shaft；3-gag lever posts；
4-supports；5-hinged axle sleeves；6-1-tup；
6-2-L-type connecting rod；7-1-tank body；7-2-cover；
7-3-steel ladle support；8-1-steel ladle；8-2-vacuum refractory material lid；
9-molten steel；10-oxygen rifles；11-argon gas blowing devices；
12-vacuum evacuation devices.
Specific embodiment
As shown in Figures 2 to 6, the utility model includes bracket, rotational installation on the bracket for blocking oxygen rifle mouth
Sealing plate 2, connect with the sealing plate 2 weight for driving 2 automatic plugging of sealing plate and setting is used on the bracket
The position-limit mechanism of 2 opening direction of sealing plate is limited, the bracket includes top plate 1-2 and is arranged in below the top plate 1-2
The through-hole 1-2-1 to match with the shape of the sealing plate 2 is offered on four supporting legs 1-1, the top plate 1-2, the sealing plate 2
Side is provided with convex block 2-1, and the other side level of the sealing plate 2 is fixedly installed with articulated shaft 2-2, level on the top plate 1-2
It is fixedly installed with the hinged axle sleeve 5 for articulated shaft 2-2 installation.
In the present embodiment, by the way that bracket is arranged, and it is rotatablely installed on bracket the sealing plate 2 for blocking oxygen rifle mouth, it is described
Bracket includes top plate 1-2 and four supporting leg 1-1, and the through-hole 1-2-1 to match with the shape of sealing plate 2 is offered on top plate 1-2, real
When border is installed, through-hole 1-2-1 is made to be located at the surface of oxygen rifle mouth, when sealing plate 2 blocks through-hole 1-2-1, that is, realized to oxygen rifle
The closure of mouth realizes the opening to oxygen rifle mouth when sealing plate 2 opens through-hole 1-2-1；
In actual use, when oxygen rifle 10 moves downwardly through through-hole 1-2-1, the end of oxygen rifle 10 pushes sealing plate 2, makes to seal
Plate 2 is opened to the inside steel ladle 8-1, when oxygen rifle 10, which moves up, exits through-hole 1-2-1, motive force of the oxygen rifle 10 to sealing plate 2
It fades away, by connecting weight on sealing plate 2, under the gravity of weight, sealing plate 2 be can be automatically closed；
As shown in Fig. 3, Fig. 4 and Fig. 7, in actual use, when oxygen rifle 10 pushes sealing plate 2 to open, due to 10 oxygen blast of oxygen rifle
Flow velocity be 2~3 times of velocities of sound, from the oxygen injection port of oxygen rifle 10 spray high speed oxygen stream can by the molten steel of splash drip blow partially, make oxygen
The molten steel drop that the oxygen injection port of rifle 10 will not be sprayed is blocked, still, when the oxygen injection port of oxygen rifle 10 stops spray oxygen, high speed oxygen
After stream disappears, the molten steel drop of splash can block the oxygen injection port of oxygen rifle 10, therefore, using this automatic switch protective device in oxygen rifle
When 10 oxygen injection port stops spray oxygen, it can prevent the molten steel of splash from dripping and block the oxygen injection port of oxygen rifle 10, cause 10 quilt of oxygen rifle
The problem of burning out leak, improves oxygen blast efficiency and decarburization efficiency of molten steel, and using effect is good.
In the present embodiment, by the way that position-limit mechanism is arranged on the bracket, the opening direction of the sealing plate 2 can be limited,
Sealing plate 2 is set to be merely able to open to the inside of steel ladle 8-1, exit when oxygen rifle 10 moves up under the action of oxygen rifle 10 pushes
When steel ladle 8-1 stops oxygen blast, sealing plate 2 cannot be opened to the outside of steel ladle 8-1, can only locate under the gravity of weight
Through-hole 1-2-1 is closed in horizontal position.
In the present embodiment, by being matched with position-limit mechanism by convex block 2-1 in the side of sealing plate 2 setting convex block 2-1,
Realize the restriction to 2 opening direction of sealing plate, structure is simple, and manufacturing cost is low.
In the present embodiment, articulated shaft 2-2 is fixedly mounted by the other side level in sealing plate 2, and horizontal on top plate 1-2
The hinged axle sleeve 5 installed for articulated shaft 2-2 is fixedly mounted, by the articulated connection of articulated shaft 2-2 and hinged axle sleeve 5, thus real
Rotation connection between existing sealing plate 2 and top plate 1-2, connection is reliable, rotation is flexible, and using effect is good.
In the present embodiment, since this automatic switch protective device is arranged in VOD vacuum oxygen refining furnace furnace, this
The material of automatic switch protective device selects heat-resistance stainless steel material.
In the present embodiment, the weight includes tup 6-1 and the L for connecting the tup 6-1 Yu the articulated shaft 2-2
Type connecting rod 6-2.
In the present embodiment, one end of the L-type connecting rod 6-2 is fixedly connected on articulated shaft 2-2, the L-type connecting rod
The other end of 6-2 is fixedly connected on the top of tup 6-1.
In the present embodiment, the quantity of the hinged axle sleeve 5 is two, and two hinged axle sleeves 5 are symmetrically laid in through-hole
The two sides of 1-2-1.
As shown in Figure 2, Figure 3 and Figure 4, in the present embodiment, the position-limit mechanism includes being arranged in above the convex block 2-1
Gag lever post 3 and it is mounted on the support 4 that 3 both ends of gag lever post are used to support the gag lever post 3.
In the present embodiment, by the top of convex block 2-1 be arranged gag lever post 3, when sealing plate 2 around articulated shaft 2-2 by molten steel
When wrapping the outside rotation of the interior lateral steel ladle 8-1 of 8-1, convex block 2-1 can be touched on gag lever post 3, and gag lever post 3 can prevent sealing plate
2 open to the outside of steel ladle 8-1, are in a horizontal position sealing plate 2, structure is simple, and using effect is good.
As shown in 3 and Fig. 4, in the present embodiment, the support 4 is U-shaped baffle ring, and the both ends of the gag lever post 3 are fixed respectively
It is mounted in the U-lag of the U-shaped baffle ring.
In the present embodiment, two ends of the U-shaped baffle ring are fixedly mounted on top plate 1-2, the both ends difference of gag lever post 3
It is fixedly mounted in the U-lag of the U-shaped baffle ring in a welding manner, it is firm to connect, and improves the use of the position-limit mechanism
Service life.
As shown in Fig. 3, Fig. 4 and Fig. 7, in actual use, this automatic switch protective device is mounted on vacuum refractory material
It covers on 8-2, makes through-hole 1-2-1 and the oxygen rifle mouth to just, carry out oxygen blast when oxygen rifle 10 is moved downwardly into steel ladle 8-1
When, the end of oxygen rifle 10 pushes sealing plate 2, since sealing plate 2 is rotatably installed on bracket, the motive force in 10 end of oxygen rifle
Under, sealing plate 2 is opened to the inside of steel ladle 8-1, so that oxygen rifle 10 is passed through oxygen rifle mouth and is entered steel ladle 8-1, due to 10 oxygen blast of oxygen rifle
Flow velocity be the 2-3 times of velocity of sound, from the oxygen injection port of oxygen rifle 10 spray high speed oxygen stream can by the molten steel of splash drip blow partially, make oxygen rifle
The molten steel drop that 10 oxygen injection port will not be sprayed is blocked；It is when oxygen rifle 10, which moves up, exits steel ladle 8-1 stopping oxygen blast, i.e., high
After fast oxygen stream disappears, the molten steel drop of splash in order to prevent blocks the oxygen injection port of oxygen rifle 10, under the gravity of weight, envelope
Plate 2 is gradually recovered horizontal position, and due to being provided with the position restrainer for limiting 2 opening direction of sealing plate on the bracket
Structure, the position-limit mechanism can prevent sealing plate 2 from continuing to rotate to the outer of steel ladle 8-1 after sealing plate 2 restores to horizontal position
Side is opened, at this point, sealing plate 2 be in sealed condition, this automatic switch protective device is easy for installation, flexible operation mode and put at
This is low, and using effect is good.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to any simple modification to the above embodiments of the utility model technical spirit, change and equivalent structural changes, still
Belong in the protection scope of technical solutions of the utility model.
Claims (5)
1. a kind of VOD vacuum oxygen refining furnace oxygen lance mouth is automatically switched protective device, it is characterised in that: including bracket, rotation peace
Dress is on the bracket for blocking the sealing plate (2) of oxygen rifle mouth, being connect with the sealing plate (2) for driving the sealing plate (2) certainly
The dynamic weight blocked and setting are on the bracket for limiting the position-limit mechanism of the sealing plate (2) opening direction, the bracket
Including top plate (1-2) and four supporting legs (1-1) below the top plate (1-2) are set, offered on the top plate (1-2) with
The side of the through-hole (1-2-1) that the shape of the sealing plate (2) matches, the sealing plate (2) is provided with convex block (2-1), the envelope
The other side level of plate (2) is fixedly installed with articulated shaft (2-2), and level is fixedly installed with for the hinge on the top plate (1-2)
The hinged axle sleeve (5) of spindle (2-2) installation.
2. a kind of VOD vacuum oxygen refining furnace oxygen lance mouth described in accordance with the claim 1 is automatically switched protective device, feature exists
Include tup (6-1) in: the weight and the L-type connecting rod for connecting the tup (6-1) Yu the articulated shaft (2-2)
(6-2)。
3. a kind of VOD vacuum oxygen refining furnace oxygen lance mouth described in accordance with the claim 1 is automatically switched protective device, feature exists
In: the quantity of the hinged axle sleeve (5) is two, and two hinged axle sleeves (5) are symmetrically laid in the two of through-hole (1-2-1)
Side.
4. a kind of VOD vacuum oxygen refining furnace oxygen lance mouth described in accordance with the claim 1 is automatically switched protective device, feature exists
Include the gag lever post (3) being arranged above the convex block (2-1) in: the position-limit mechanism and is mounted on gag lever post (3) both ends use
In the support (4) for supporting the gag lever post (3).
5. a kind of VOD vacuum oxygen refining furnace oxygen lance mouth is automatically switched protective device according to claim 4, feature exists
In: the support (4) is U-shaped baffle ring, and the both ends of the gag lever post (3) are respectively and fixedly installed to the U-lag of the U-shaped baffle ring
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821577859.9U CN208815059U (en) | 2018-09-27 | 2018-09-27 | A kind of VOD vacuum oxygen refining furnace oxygen lance mouth automatic switch protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821577859.9U CN208815059U (en) | 2018-09-27 | 2018-09-27 | A kind of VOD vacuum oxygen refining furnace oxygen lance mouth automatic switch protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208815059U true CN208815059U (en) | 2019-05-03 |
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ID=66278483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821577859.9U Active CN208815059U (en) | 2018-09-27 | 2018-09-27 | A kind of VOD vacuum oxygen refining furnace oxygen lance mouth automatic switch protective device |
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| Country | Link |
|---|---|
| CN (1) | CN208815059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111321277A (en) * | 2020-03-30 | 2020-06-23 | 宝钢德盛不锈钢有限公司 | Oxygen lance protection device of vacuum refining furnace |
-
2018
- 2018-09-27 CN CN201821577859.9U patent/CN208815059U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111321277A (en) * | 2020-03-30 | 2020-06-23 | 宝钢德盛不锈钢有限公司 | Oxygen lance protection device of vacuum refining furnace |
| CN111321277B (en) * | 2020-03-30 | 2022-11-15 | 宝钢德盛不锈钢有限公司 | Oxygen lance protection device of vacuum refining furnace |
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