CN202047090U - Air pressure breaking slag pressing lance - Google Patents
Air pressure breaking slag pressing lance Download PDFInfo
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- CN202047090U CN202047090U CN2011200853010U CN201120085301U CN202047090U CN 202047090 U CN202047090 U CN 202047090U CN 2011200853010 U CN2011200853010 U CN 2011200853010U CN 201120085301 U CN201120085301 U CN 201120085301U CN 202047090 U CN202047090 U CN 202047090U
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- rifle
- slag
- water
- pneumatics
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Abstract
The utility model provides an air pressure breaking slag pressing lance, which comprises a lance main body (10), wherein the lance main body comprises a lance head (7) and a lance body; the lance head (7) is arranged on the front end part of the lance main body (10); the lance body is communicated integrally with the lance head (7); the lance main body (10) is filled with gas; and the gas can be jetted out of the lance head (7). Due to the adoption of the air pressure breaking slag pressing lance, the slag overflow in a ladle can be greatly reduced, and the slag clearing times of workers are reduced under severe condition; and meanwhile nitrogen is used during slag pressing, so that secondary oxidation of molten steel is avoided.
Description
Technical field
The utility model belongs to technical field of ferrous metallurgy, is specifically related to a kind of broken pneumatics slag rifle.
Background technology
Molten steel vacuumizes in VD refining furnace vacuum tank when smelting, after vacuum tightness acquires a certain degree in the vacuum tank, slag can appear acutely overflowing in molten steel, this moment is general by broken empty, promptly increase the interior normal atmosphere of VD stove toward the interior pressurized air that increases of VD stove, reduce vacuum tightness in the VD stove by normal atmosphere, excessive with the slag of pushing down in the ladle.
As shown in Figure 1, VD stove commonly used at present generally comprises two vacuum tanks, divides the VD1 station and the VD2 station that are located in the VD stove.Vacuum tank comprises vacuum tank 1, with the vacuum container cover 3 that is positioned at vacuum tank 1 top, the two constitutes a seal hatch, and screening cover 2 is suspended in the below of vacuum container cover 3, and the distance between vacuum container cover 3 and the screening cover 2 makes that screening cover 2 just in time covers on ladle after vacuum tank lid 3 covers.The middle part of vacuum tank 1 has vacuum pipe 5, when the ladle that fills molten steel hangs in the vacuum tank, covers vacuum container cover 3, and screening cover 2 is covered on ladle, can vacuumize operation to vacuum tank, with the gas in the removal molten steel of maximum as far as possible.On vacuum container cover 3, offer the vacuum container cover vision slit of being made by transparent toughened glass 6 is housed, position with vacuum container cover vision slit 6 same view directions on screening cover 2 has screening cover vision slit 14, so that can observe the boiling situation of molten steel in the vacuum tank for operator.
As shown in Figures 2 and 3, the broken pneumatics slag mode that adopts is to be full of compressed-air actuated pipe with one to stretch in the vision slit of reserving on the vacuum container cover 3 17 at present, vision slit 17 is arranged on vacuum tank vision slit 6 next doors, and pressurized air is entered in the vacuum tank, thereby can increase the air pressure in the vacuum tank.Because compressed-air actuated charging into needs for some time, reach the purpose of pushing down slag excessive in the ladle fully so can not there be enough air to be full of vacuum tank immediately, therefore be easy to cause the slag in the ladle to occur through screening cover vision slit 14 excessive situations.And the intravital excessive slag of the vacuum tank jar of VD stove must often be cleared up.Because temperature is higher in the VD stove stove of just having smelted, and air rarefaction, therefore after must waiting until that the interior temperature of VD stove stove drops to a certain degree, the workman just can enter and carry out scarfing cinder work in the vacuum tank, and want constantly to carry out oxygen supply toward the interior air that replenishes of stove to the workman simultaneously, abominable scarfing cinder scene, frequent scarfing cinder work have increased very big labour intensity to the workman.
As seen, not only efficient is low for present broken pneumatics slag mode, and often need carry out the scarfing cinder operation, and when broken empty the pressurized air that feeds, also can cause the secondary oxidation of molten steel, make the quality reduction of molten steel.
The utility model content
Technical problem to be solved in the utility model is at above shortcomings in the prior art, and a kind of broken pneumatics slag rifle that the excessive phenomenon of molten steel takes place can reduce vacuum metling the time is provided.
The technical scheme that solution the utility model technical problem is adopted is that this broken pneumatics slag rifle comprises the rifle body, described rifle body comprises the rifle head and the body of a gun, and described rifle head is arranged on the leading section of rifle body, and the body of a gun and rifle head are communicated as one, be connected with gas in the rifle body, described gas can eject from the rifle head.
Preferably, also include and to carry out the refrigerative cooling unit to the rifle body in the described broken pneumatics slag rifle.
Wherein, described cooling unit comprises and is enclosed within the external rifle overcoat of rifle that described rifle puts and has water-in and water outlet, can feed water coolant in the gap between rifle overcoat and the rifle body outward.
Preferably, also include water jacket in the cooling unit, it is external that described water jacket is enclosed within rifle, and water jacket is between rifle overcoat and the rifle body, and described water jacket extends axially to the position near the rifle head along the rifle body; Described water-in and water outlet are arranged on rifle and put position away from the rifle head outward, wherein, the position that water outlet puts outside rifle is corresponding with water jacket, the position that water-in puts outside rifle is corresponding with the rifle body, gap between water jacket and the rifle body constitutes water entry, and the gap between water jacket and the rifle overcoat constitutes water exit.
Preferred water jacket selects for use copper material to make near the part of rifle cephalic par, and rest part adopts steel to make.
Further preferably, also include towing chain mechanism in the described broken pneumatics slag rifle, described towing chain mechanism is located at the rear of rifle body, described towing chain mechanism comprises drag chain and is arranged on water route circulation tube and tracheae on the drag chain, described water route circulation tube comprises water inlet pipe and return water pipe, described water inlet pipe and return water pipe are communicated with water-in and the water outlet that rifle puts outward respectively, and described tracheae is communicated with the rifle body.
More preferably, also include gas bag in the described broken pneumatics slag rifle, the exit end of described gas bag is communicated with described tracheae, and the entrance end of gas bag is provided with stopping valve, and gas bag is by described stopping valve and the total pipe coupling of extraneous gas.
Preferably, the gas that feeds in the described rifle body is nitrogen.
The front end of preferred described rifle head adopts copper material to make, and the rear end of rifle head adopts steel to make, and the described body of a gun adopts steel to make.
Preferably, described broken pneumatics slag rifle is arranged in the vision slit on the vacuum container cover, vacuum tank is broken the pneumatics slag.
The beneficial effects of the utility model are: by using brokenly pneumatics slag rifle, realized pushing down the excessive purpose of slag, significantly reduced the excessive quantity of slag of ladle, reduced the workman and entered the number of times that carries out scarfing cinder in the vacuum tank; When pressing slag, can push down slag well by using nitrogen to feed vacuum tank, and avoid the secondary oxidation of molten steel simultaneously, improve the quality of steel.
Description of drawings
Fig. 1 is the structural representation of vacuum tank in the VD stove;
Fig. 2 is the part sectioned view of vacuum container cover and screening cover;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural representation of the broken pneumatics slag rifle of the utility model;
Fig. 5 is the position view of broken pneumatics slag rifle on vacuum tank shown in Fig. 4;
Fig. 6 is the working position synoptic diagram of drag chain and vacuum tank.
Among the figure: the 1-vacuum tank; The 2-screening cover; The 3-vacuum container cover; The 4-drag chain; The 5-vacuum pipe; 6-vacuum container cover vision slit; 7-rifle head; 8-rifle overcoat; The 9-water jacket; 10-rifle body; The 11-water-in; The 12-water outlet; The 13-gas inlet; 14-screening cover vision slit; The 15-vision slit; 16-breaks pneumatics slag rifle; The vision slit that 17-reserves.
Embodiment
For making those skilled in the art understand the technical solution of the utility model better, the broken pneumatics slag rifle of the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 4, in the present embodiment, broken pneumatics slag rifle comprises rifle body 10, cooling unit and towing chain mechanism.
Wherein, rifle body 10 comprises the rifle head 7 and the body of a gun, and rifle head 7 is arranged on the leading section of rifle body 10, and the body of a gun and rifle head 7 are communicated as one.Can be connected with gas in the rifle body 10, described gas can eject from rifle head 7.The body of a gun is that a latus rectum is that 40mm, wall thickness are the steel pipe of 4mm.The material of rifle head 7 comprises two portions, and its front end selects for use copper material to make, and the rear end selects for use steel to make, and the front-end and back-end of described rifle head are by welding together, rifle head rear end and with body of a gun welding, the diameter of rifle head is identical with the diameter of the body of a gun.Because broken pneumatics slag rifle is when work, need pass the vacuum container cover vision slit 14 on the vacuum container cover 3, place about 200mm place, screening cover 2 tops to spray (as shown in Figure 5) on rifle head 7, cause the rifle head nearer apart from the molten steel in the ladle, suffered temperature is very high, adopt the steel pipe of common material to be easy to melt or distortion, so the front end of rifle head 7 adopt copper material to make.
Described cooling unit comprises rifle overcoat 8 and water jacket 9.Rifle overcoat 8 is enclosed within on the rifle body 10, rifle overcoat 8 adopt diameters greater than the diameter of rifle body 10 and with the steel pipe of rifle body 10 concentric arrangement.Rifle body 10 and rifle overcoat 8 be in rifle head 7 place's closures, makes the clearance space that forms a sealing between rifle body 10 and rifle overcoat 8.
Position away from rifle head 7 on the rifle overcoat 8 is provided with water-in 11 and water outlet 12, and wherein water-in 11 is in more the position away from rifle head 7, and pairing rifle body 10 parts in this position are not covered by water jacket 9.Therefore, the position of water outlet 12 on rifle overcoat 8 is corresponding with water jacket 9, and the position of water-in 11 on rifle overcoat 8 is corresponding with rifle body 10.
The setting of water jacket 9 makes that the clearance space between water jacket 9 and the rifle body 10 constitutes water entry, and the clearance space between water jacket 9 and the rifle overcoat 8 constitutes water exit.
In the present embodiment, the total length of described rifle body 10 is 1400mm, water-in 11 is arranged on the rifle body 10 position apart from the terminal 100mm of rifle body, water outlet 12 is arranged on the rifle body 10 position apart from the terminal 100mm～200mm of rifle body, and the junction of water jacket 9 and rifle overcoat 8 is arranged on the position apart from the terminal 100mm of rifle body.The diameter of rifle body 10 is φ 40mm, and the diameter of water jacket 9 is that φ 76, its wall thickness are 3mm, and the diameter of rifle overcoat 8 is φ 108mm, and its wall thickness is 4mm.Should break pneumatics slag rifle and stretch into when working in the vacuum tank, its built-in length can reach 1200mm.
As Fig. 1 and shown in Figure 6, towing chain mechanism is located at the rear of rifle body 10, and described towing chain mechanism comprises drag chain 4 and is arranged on water route circulation tube and tracheae on the drag chain 4.Described water route circulation tube comprises water inlet pipe and return water pipe, and described water inlet pipe and return water pipe are communicated with water-in 11 and water outlet 12 on the rifle overcoat 8 respectively, and described tracheae is communicated with rifle body 10, and described tracheae is connected to the gas inlet 13 on the rifle body.The input terminus of water inlet pipe, the output terminal of return water pipe are communicated with steel mill total equipment circulating water system respectively.
In the present embodiment, the gas that is fed in the rifle body 10 adopts nitrogen.
In order to guarantee to use brokenly pneumatics slag rifle that the nitrogen source of the gas of pressure-stabilisation is arranged when breaking the pneumatics slag, should also include gas bag in the broken pneumatics slag rifle, the exit end of described gas bag is communicated with described tracheae, the entrance end of gas bag is provided with stopping valve, gas bag is by described stopping valve and the total pipe coupling of extraneous gas, in the present embodiment, the gas bag size is 3m
3
In addition, tracheae also was provided with pneumavalve before inserting rifle body 10, pneumavalve is arranged on vacuum container cover vision slit 6 next doors on the vacuum container cover 3, so that operator in time, easily the operation, vacuum tightness in vacuum tank reaches processing requirement, simultaneously operator see in the ladle molten steel when screening cover vision slit 14 overflows slag by vacuum container cover vision slit 6, can the described pneumavalve of manual unlocking, and broken pneumatics slag in the control vacuum tank.
The water coolant that flows into from the total equipment circulating water system of steel mill flows to from the water-in 11 of rifle overcoat 8, enter the water entry between water jacket 9 and the rifle body 10, water exit between water jacket 9 and rifle overcoat 8 again, and flow out from water outlet 12, flow back at last in this circulating water system.After the cold water that feeds in water-in 11 enters water entry, can in time take away the heat on the rifle body 10, having absorbed the cold water behind the heat becomes hot water, enters water exit, and flows out through water outlet 12.Such setting, be because the major part of rifle body all is in the vacuum tank, and extreme temperatures in the vacuum tank cause gun barrel to be easy to distortion, so the rifle body 10 outer setting cooling units at broken pneumatics slag rifle cool off it, can long-time works better to guarantee brokenly pneumatics slag rifle.
Fig. 1 and shown in Figure 6, in the job site, broken pneumatics slag rifle 16 is sleeved in the vision slit 15 on the vacuum container cover 3, vacuum container cover 3 is lifted on the cover dolly, towing chain mechanism and the nitrogen source of the gas that is connected with broken pneumatics slag rifle 16 thereof all are connected with the cover dolly with water source in the broken pneumatics slag rifle, and can be with the to-and-fro movement of cover dolly, can be implemented in to move between VD1 station in the VD stove and the VD2 station and carry out work; When arriving a certain station, adjust the position of rifle body 10, make the rifle head be in screening cover 2 tops, apart from the about 200mm of screening cover position, the assurance muzzle is just in time aimed at the screening cover vision slit 14 on the screening cover 2, during work, the broken pneumatics slag rifle pneumavalve on operator's manual unlocking vacuum container cover vision slit 6 next doors is controlled brokenly pneumatics slag rifle 16 with broken pneumatics slag in the control vacuum tank.
In the present embodiment, by on the vacuum container cover of VD stove, installing brokenly pneumatics slag rifle additional, utilize compressed nitrogen that the position of the slag that overflows is easily sprayed and realize pushing down the excessive purpose of slag, significantly reduced the excessive quantity of slag in the ladle, reduced the workman enter scarfing cinder number of times under the mal-condition (when not installing brokenly pneumatics slag rifle additional the scarfing cinder in 3 days of each vacuum tank once, install brokenly pneumatics slag rifle additional after each vacuum tank 7-8 days scarfing cinder once); Because what use is nitrogen, rather than air, thereby can avoid the secondary oxidation of molten steel has improved the quality of molten steel when pressing slag simultaneously.
The application of the broken pneumatics slag rifle in the present embodiment has alleviated working strength of workers greatly, makes the steel products quality obtain obvious raising, has higher economic value and suitability.
Be understandable that above embodiment only is the illustrative embodiments that adopts for principle of the present utility model is described, yet the utility model is not limited thereto.For those skilled in the art, under the situation that does not break away from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement also are considered as protection domain of the present utility model.
Claims (10)
1. broken pneumatics slag rifle, it is characterized in that comprising rifle body (10), described rifle body comprises the rifle head (7) and the body of a gun, described rifle head (7) is arranged on the leading section of rifle body (10), the body of a gun and rifle head (7) are communicated as one, the rifle body is connected with gas in (10), and described gas can eject from rifle head (7).
2. broken pneumatics slag rifle according to claim 1 is characterized in that also including and can carrying out the refrigerative cooling unit to rifle body (10) in the described broken pneumatics slag rifle.
3. broken pneumatics slag rifle according to claim 2, it is characterized in that described cooling unit comprises the rifle overcoat (8) that is enclosed within outside the rifle body (10), have water-in (11) and water outlet (12) on the described rifle overcoat (8), can feed water coolant in the gap between rifle overcoat (8) and the rifle body (10).
4. broken pneumatics slag rifle according to claim 3, it is characterized in that also including in the described cooling unit water jacket (9), described water jacket (9) is enclosed within outside the rifle body (10), and is between rifle overcoat (8) and the rifle body (10), and described water jacket (9) extends axially to the position near the rifle head along the rifle body; Described water-in (11) and water outlet (12) are arranged on the last position away from rifle head (7) of rifle overcoat (8), wherein, the position of water outlet (12) on rifle overcoat (8) is corresponding with water jacket (9), the position of water-in (11) on rifle overcoat (8) is corresponding with rifle body (10), gap between water jacket (9) and the rifle body (10) constitutes water entry, and the gap between water jacket (9) and the rifle overcoat (8) constitutes water exit.
5. broken pneumatics slag rifle according to claim 4 is characterized in that the part of close rifle head (7) end of described water jacket (9) selects for use copper material to make, and rest part adopts steel to make.
6. broken pneumatics slag rifle according to claim 4, it is characterized in that also including towing chain mechanism in the described broken pneumatics slag rifle, described towing chain mechanism is located at the rear of rifle body (10), described towing chain mechanism comprises drag chain (4) and is arranged on water route circulation tube and tracheae on the drag chain (4), described water route circulation tube comprises water inlet pipe and return water pipe, described water inlet pipe and return water pipe are communicated with water-in (11) and water outlet (12) on the rifle overcoat (8) respectively, and described tracheae is communicated with rifle body (10).
7. broken pneumatics slag rifle according to claim 6, it is characterized in that also including gas bag in the described broken pneumatics slag rifle, the exit end of described gas bag is communicated with described tracheae, and the entrance end of gas bag is provided with stopping valve, and gas bag is by described stopping valve and the total pipe coupling of extraneous gas.
8. according to the described broken pneumatics slag rifle of one of claim 1-7, it is characterized in that the gas that feeds in the described rifle body (10) is nitrogen.
9. broken pneumatics slag rifle according to claim 8 is characterized in that the front end of described rifle head adopts copper material to make, and the rear end of rifle head adopts steel to make, and the described body of a gun adopts steel to make.
10. broken pneumatics slag rifle according to claim 8 is characterized in that described broken pneumatics slag rifle is arranged in the vision slit (15) on the vacuum container cover (3), vacuum tank is broken the pneumatics slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200853010U CN202047090U (en) | 2011-03-28 | 2011-03-28 | Air pressure breaking slag pressing lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200853010U CN202047090U (en) | 2011-03-28 | 2011-03-28 | Air pressure breaking slag pressing lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047090U true CN202047090U (en) | 2011-11-23 |
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ID=44987408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200853010U Expired - Lifetime CN202047090U (en) | 2011-03-28 | 2011-03-28 | Air pressure breaking slag pressing lance |
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| Country | Link |
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| CN (1) | CN202047090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103805732A (en) * | 2012-11-07 | 2014-05-21 | 西林钢铁集团有限公司 | Converter smelting slag pressing method |
| CN105772243A (en) * | 2016-04-27 | 2016-07-20 | 罗璐 | Fluid injection unit, fluid injection device, manufacturing method of fluid injection device, and fluid injection system |
-
2011
- 2011-03-28 CN CN2011200853010U patent/CN202047090U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103805732A (en) * | 2012-11-07 | 2014-05-21 | 西林钢铁集团有限公司 | Converter smelting slag pressing method |
| CN105772243A (en) * | 2016-04-27 | 2016-07-20 | 罗璐 | Fluid injection unit, fluid injection device, manufacturing method of fluid injection device, and fluid injection system |
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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: 20111123 |