CN102181600A - Follow-up oxygen lance nitrogen seal device - Google Patents
Follow-up oxygen lance nitrogen seal device Download PDFInfo
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- CN102181600A CN102181600A CN 201110135237 CN201110135237A CN102181600A CN 102181600 A CN102181600 A CN 102181600A CN 201110135237 CN201110135237 CN 201110135237 CN 201110135237 A CN201110135237 A CN 201110135237A CN 102181600 A CN102181600 A CN 102181600A
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Abstract
The invention relates to a follow-up oxygen lance nitrogen seal device comprising a conical seat, a conical plate and a seal plate, wherein, the conical plate and the seal plate are sheathed on the oxygen lance; the conical seat at least comprises a reversed conical inner cone seal surface; the conical plate comprises a reversed conical outer cone seal surface matched with the inner cone seal surface of the conical seat, and an oxygen lance channel arranged in the outer cone seal surface and the diameter of which is larger than the outer diameter of the oxygen lance; an upper cover plate and a lower cover plate are arranged between the outer cone seal surface and the oxygen lance channel; the seal plate is a cylindrical object, and can be movably located on the upper cover plate of the conical plate; a plurality of nitrogen seal rings are fixed in the side wall of the seal plate in an axial direction; the oxygen lance enters the oxygen lance inlet of the converter through the conical plate; the inner diameter of the nitrogen seal ring and the outer diameter of the oxygen lance form clearance fit; and the nitrogen is spouted out by the nitrogen seal ring. The seal plate provided by the invention can move on the surface of the conical plate along the oxygen lance, thus the oxygen lance not only has a certain free degree in a horizontal level, but also has good seal effect.
Description
Technical field
The invention relates to a kind of oxygen rifle nitrogen seal device, the flue gas of anti-block muzzle and carbon monoxide are overflowed during especially a kind of suitable converter steelmaking blowing with ejector half oxygen rifle nitrogen seal device.
Background technology
In the converter steelmaking operation, when blowing, can produce a large amount of high-temperature flue gas and carbon monoxide, if high-temperature flue gas and carbon monoxide are overflowed from the oxygen muzzle, then can burn out equipment and cause personnel to poison, therefore nitrogen seal device must be set at the oxygen muzzle.Fig. 5 is a kind of known oxygen rifle nitrogen seal device, and the sealing pad 71 that is fixed with conical seat 72, one tapers at the top that the oxygen rifle is gone into muzzle 5 can be seated in this conical seat 72.Be provided with a plurality of sealing plates 711 with certain intervals week in the sealing pad 71, nitrogen is entered between sealing pad and each sealing plate 711 by the sidewall of nitrogen supply-pipe 8 through conical seat 72, realizes being set on the oxygen rifle nitrogen envelope all around in the sealing plate 711.Because in order to guarantee nitrogen envelope effect, the gap between the sealing plate 711 of oxygen rifle 6 and sealing pad 71 is often very little.In actual production process, it is to be fixed on the flue of heating power that converter oxygen gun is gone into muzzle 5, and conical seat 72 is fixed on the oxygen rifle goes on the muzzle 5, under the baking of converter high-temperature flue gas, the heating power flue easily produces distortion and displacement, thereby drive conical seat 72 displacements, in the time of therefore in sealing pad 71 is seated in conical seat 72, also will be shifted thereupon, like this, when oxygen rifle 6 descended, very possible gun barrel can be stuck on the sealing plate 711, thereby causes serious accident.The nitrogen seal device of above-mentioned known configurations if will overcome card rifle problem, then have only the gap between the sealing plate 711 of oxygen rifle 6 and sealing pad 71 is strengthened, but so, nitrogen seal device can't reach good sealing effectiveness.
" a kind of oxygen rifle nitrogen seal device " also disclosed in No. 201020161516.1 Chinese patent, this device comprises nitrogen envelope seat and nitrogen blocking, the nitrogen blocking comprises the annular seal cover board, the internal ring wall of seal cover board is provided with back up pad, support upper surface and lower surface and be respectively arranged with strongback one and strongback two, parallel sealing plate one and the sealing plate two of being provided with between strongback one, two.Bottom in location two also is provided with another strongback three, is provided with between this two strongback two, three by constituting between the continuous flow deflector one of web plate, two, two flow deflectors and imports first ring seal that nitrogen is led.Though this structure has solved above-mentioned card rifle problem, but because between the upper cover plate of the seal cover board of nitrogen blocking and nitrogen envelope seat and the contact surface between the lower cover that seals of the strongback three of nitrogen blocking and nitrogen all be horizontal contact surface, when oxygen rifle blowing gap band the nitrogen blocking and is mentioned, because site environment is messy, and adherent slag can drop on the cover plate up and down of nitrogen envelope seat on the oxygen rifle, can cause nitrogen blocking and nitrogen envelope seat to fit tightly like this, lose nitrogen envelope effect.In addition, because the circumferential weld of nitrogen blocking is horizontal circumferential weld in this structure, the air curtain that blows out is a level, and sealing effectiveness is not good.
Because the defective that above-mentioned known technology exists, the inventor develops of the present invention with ejector half oxygen rifle nitrogen seal device, to overcome the problems referred to above according to the production design experiences of being engaged in this area and association area for many years.
Summary of the invention
The purpose of this invention is to provide a kind of oxygen rifle nitrogen seal device, especially a kind of sealing pad and oxygen rifle gap be less, have good nitrogen envelope effect and can with the oxygen rifle move horizontally with ejector half oxygen rifle nitrogen seal device.
For this reason, the present invention proposes a kind of with ejector half oxygen rifle nitrogen seal device, it comprises conical seat, conical disc and sealing pad, described conical disc and sealing pad are set on the described oxygen rifle, wherein: described conical seat has bevel sealing surface in the back taper at least, bevel sealing surface is provided with more than one through hole in described, and this through hole is connected with the nitrogen supply-pipe, and the bottom of described conical seat is gone into muzzle with the oxygen rifle of converter and fixedlyed connected; Described conical disc has the outer bevel sealing surface of the back taper that matches with the interior bevel sealing surface of described conical seat, and is arranged on described outer bevel sealing surface inboard, the diameter oxygen rifle passage greater than oxygen rifle external diameter; Be provided with upper cover plate between bevel sealing surface and the oxygen rifle passage outside described, described outer bevel sealing surface is provided with the nitrogen inlet that is connected with described through hole, and described upper cover plate is provided with more than one nitrogen outlet; Described sealing pad is a hollow column, and can be seated on the upper cover plate of described conical disc movably, a plurality of nitrogen seal rings are fixed on the inside sidewalls of described sealing pad vertically, and described oxygen rifle passes described nitrogen seal ring and goes into muzzle through the oxygen rifle that described conical disc enters converter; The internal diameter of described nitrogen seal ring and described oxygen rifle external diameter form running fit, and the nitrogen outlet on the upper cover plate of described nitrogen seal ring and described conical disc is connected.
Aforesaid with ejector half oxygen rifle nitrogen seal device, wherein, each described nitrogen seal ring is made of two video discs, and this two video disc is obliquely installed in described sealing pad, forms channel of nitrogen between two described video discs.Constitute the angle difference of the two video discs inclination of each described nitrogen seal ring, that is, the inlet mouth end of two described video discs is fixedlyed connected with the sidewall of described sealing pad, and two video disc spacings of inlet mouth end are greater than the spacing of air outlet end.
Aforesaid with ejector half oxygen rifle nitrogen seal device, wherein, the inlet mouth end that described nitrogen seal ring is arranged to fixedly connected with the sidewall of described sealing pad is higher than towards the air outlet of oxygen rifle end.
Aforesaid with ejector half oxygen rifle nitrogen seal device, wherein, the sidewall outside of described sealing pad is provided with outer wall, one top panel is fixedlyed connected with the sidewall of described sealing pad and the upper/lower terminal face of outer wall respectively with a lower panel, forms first cavity of the ccontaining nitrogen of energy between described upper and lower panel and sealing pad sidewall, the outer wall; Described lower panel be provided with described conical disc upper cover plate on the corresponding breather hole of nitrogen outlet, the sidewall of described sealing pad is provided with the opening that a plurality of and described nitrogen seal ring is connected.
Aforesaid with ejector half oxygen rifle nitrogen seal device, wherein, the periphery solstics of the breather hole that is provided with on the lower panel of distance less than described sealing pad at nitrogen outlet periphery solstics that is provided with on the described upper cover plate and described conical disc center is apart from the distance at described sealing pad center.That is, after described sealing pad moved with respect to described conical disc, the nitrogen inlet on nitrogen outlet that is provided with on the upper cover plate of conical disc and the described sealing pad lower panel still all was positioned in conical disc and the sealing pad contact surface scope.
Aforesaid wherein, described conical disc also has lower cover with ejector half oxygen rifle nitrogen seal device, constitutes second cavity of the ccontaining nitrogen of energy between described upper and lower cover plate and outer bevel sealing surface, the oxygen rifle passage.
Aforesaid with ejector half oxygen rifle nitrogen seal device, wherein, the exterior angle angle that forms between described interior bevel sealing surface and the horizontal plane is greater than the angle of repose of slag, so that the slag that drops from the oxygen rifle can not rest on its conical surface.
Aforesaid with ejector half oxygen rifle nitrogen seal device, wherein, the outside of the interior bevel sealing surface of described conical seat is provided with a tubular exterior tube, and described nitrogen supply-pipe is connected with the sidewall of described exterior tube; The upper and lower end face of bevel sealing surface and exterior tube is fixedlyed connected with base plate with top board respectively in described, forms the 3rd cavity of the ccontaining nitrogen of energy between described top board, base plate and interior bevel sealing surface, the exterior tube.
Aforesaid with ejector half oxygen rifle nitrogen seal device, wherein, convex with block on the described oxygen rifle outer wall, described block external diameter can promote with the oxygen rifle at sealing pad described in the process that promotes described oxygen rifle and conical disc greater than the diameter of described oxygen rifle passage.
Characteristics and advantage with ejector half oxygen rifle nitrogen seal device of the present invention is:
Sealing pad of the present invention is seated in the conical disc upper surface and is socketed in oxygen rifle outside surface simultaneously, the internal diameter of a plurality of nitrogen seal rings that are provided with in the sealing pad and and oxygen rifle outside surface between the gap less, and can be seated on the conical disc upper cover plate movably, and the outer bevel sealing surface of conical disc by its outside is seated on the interior bevel sealing surface of conical seat, and the oxygen rifle passage that is arranged in the outer bevel sealing surface is socketed in oxygen rifle outside surface simultaneously, has bigger gap between this oxygen rifle passage and the oxygen rifle outside surface, therefore go into conical seat on the muzzle and go into the oxygen rifle in process of production that muzzle is out of shape or displacement when being fixed on the oxygen rifle, be shifted in the lump with the conical disc of taking a seat within it simultaneously, known card rifle phenomenon can not occur yet and influence moving down of oxygen rifle, be nested with oxygen rifle in structure of the present invention this moment and can drive sealing pad and on the conical disc upper cover plate, laterally move with it.
At the sidewall inner-wall surface upper edge of sealing pad of the present invention axial restraint by a plurality of nitrogen seal rings of forming by the video disc of different taperings in twos, the inner radius of this nitrogen seal ring is the air outlet end, formed very circlet seam of slit by video disc herein, this kind structure has less clearance between nitrogen seal ring internal diameter and the oxygen rifle outside surface, even also can reach fine sealing effectiveness under the very little situation of nitrogen air demand.In addition, even the oxygen rifle has produced skew when entering oxygen rifle passage, high-temperature flue gas and carbon monoxide were overflowed by the periphery of oxygen rifle when this nitrogen seal ring still can stop the blowing of oxygen rifle effectively.
The interior bevel sealing surface of conical seat of the present invention is identical with the tapering of the outer bevel sealing surface of conical disc, and the angle of trim and horizontal plane is greater than the angle of repose of slag, thereby can be after making on the interior bevel sealing surface that the dust that falls down on the oxygen rifle and slag drop on conical seat immediately along conical surface landing, can not stop thereon, thereby can not influence fitting tightly of conical seat and conical disc, guaranteed the stopping property between interior bevel sealing surface and the outer bevel sealing surface.
Therefore, of the present invention simple in structure with ejector half oxygen rifle nitrogen seal device, the nitrogen consumption is little and sealing effectiveness is better, and can adapt to the skew of oxygen rifle entry position, is difficult for the card rifle.
Description of drawings
In order to be illustrated more clearly in this with ejector half oxygen rifle nitrogen seal device embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is intended to the present invention done and schematically illustrates and explain, not delimit the scope of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation with ejector half oxygen rifle nitrogen seal device of the present invention;
Fig. 2 is the sealing pad structural representation with ejector half oxygen rifle nitrogen seal device of the present invention;
Fig. 3 is the conical disc structural representation with ejector half oxygen rifle nitrogen seal device of the present invention;
Fig. 4 is the structural representation that the conical seat with ejector half oxygen rifle nitrogen seal device of the present invention is fixed on the oxygen muzzle;
Fig. 5 is a kind of synoptic diagram of known oxygen rifle nitrogen seal device.
The drawing reference numeral explanation:
1, sealing pad 11, sidewall 110, opening 12, outer wall
13, top panel 14, lower panel 141, breather hole 15, nitrogen seal ring
150, channel of nitrogen 151,152, video disc 153, inlet mouth end 154, air outlet end
16, first cavity 2, conical disc 21, outer bevel sealing surface 22, nitrogen inlet
23, oxygen rifle passage 24, upper cover plate 25, nitrogen outlet 26, lower cover
27, second cavity 3, conical seat 31, interior bevel sealing surface 32, through hole
36, the 3rd cavity 4, block 5, oxygen rifle are gone into muzzle 6, oxygen rifle
71, sealing pad 711, sealing plate 72, conical seat 8, nitrogen supply-pipe
Embodiment
The present invention proposes a kind of with ejector half oxygen rifle nitrogen seal device, should comprise conical seat, conical disc and sealing pad with ejector half oxygen rifle nitrogen seal device, described conical disc and sealing pad are set on the described oxygen rifle, wherein: described conical seat has bevel sealing surface in the back taper at least, bevel sealing surface is provided with more than one through hole in described, this through hole is connected with the nitrogen supply-pipe, and the bottom of described conical seat is gone into muzzle with the oxygen rifle of converter and fixedlyed connected; Described conical disc has the outer bevel sealing surface of the back taper that matches with the interior bevel sealing surface of described conical seat, and is arranged on described outer bevel sealing surface inboard, the diameter oxygen rifle passage greater than oxygen rifle external diameter; Be provided with upper cover plate between bevel sealing surface and the oxygen rifle passage outside described, described outer bevel sealing surface is provided with the nitrogen inlet that is connected with described through hole more than, and described upper cover plate is provided with more than one nitrogen outlet; Described sealing pad is a hollow column, and can be seated on the upper cover plate of described conical disc movably, a plurality of nitrogen seal rings are fixed on the inside sidewalls of described sealing pad vertically, and described oxygen rifle passes described nitrogen seal ring and goes into muzzle through the oxygen rifle that described conical disc enters converter; The internal diameter of described nitrogen seal ring and described oxygen rifle external diameter form running fit, and described nitrogen seal ring is connected with nitrogen outlet on the described upper cover plate.
Each described nitrogen seal ring is made of two different video discs of inverted tapering among the present invention, promptly, this two video disc is obliquely installed in described sealing pad, form channel of nitrogen between two described video discs, the inlet mouth end of two described video discs is fixedlyed connected with the sidewall of described sealing pad, and be connected with the nitrogen supply-pipe, and two video disc spacings of inlet mouth end are greater than the spacing of air outlet end.
Further, the described nitrogen seal ring inlet mouth end of being arranged to fixedly connected with the sidewall of described sealing pad is higher than towards the air outlet of oxygen rifle end.
The exterior angle angle that forms between bevel sealing surface and the horizontal plane in preferred described is greater than the angle of repose of slag, so that the slag that drops from the oxygen rifle can not rest on its conical surface.
Of the present invention with ejector half oxygen rifle nitrogen seal device, owing to be arranged on the external diameter of the diameter of the oxygen rifle passage on the conical disc much larger than described oxygen rifle, therefore, conical seat is heated and deforms or be shifted in using, when the drive conical disc is shifted together, by the big gap that oxygen rifle and oxygen rifle passage exist, the oxygen rifle still can successfully enter in the oxygen rifle passage, has overcome the card rifle defective that known technology exists.In addition, being set in can be with the mobile sealing pad of oxygen rifle on the oxygen rifle, because the internal diameter of the nitrogen seal ring that is provided with in it and oxygen rifle external diameter form running fit, therefore, even the oxygen rifle has produced skew when entering oxygen rifle passage, high-temperature flue gas and carbon monoxide were overflowed by the periphery of oxygen rifle when this nitrogen seal ring still can stop the blowing of oxygen rifle effectively.
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, below in conjunction with accompanying drawing and preferred embodiment, to embodiment, structure, feature and the effect with ejector half oxygen rifle nitrogen seal device of the present invention, describe in detail as after, and identical parts adopt identical label.In addition, by the explanation of embodiment, when can being to reach technique means and the effect that predetermined purpose takes to be goed deep into concrete understanding more to the present invention, however institute's accompanying drawing only provide with reference to and explanation usefulness, be not to be used for the present invention is limited.Based on the embodiment in this device, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the structural representation with ejector half oxygen rifle nitrogen seal device of the present invention; Fig. 2 is the sealing pad structural representation with ejector half oxygen rifle nitrogen seal device of the present invention; Fig. 3 is the conical disc structural representation with ejector half oxygen rifle nitrogen seal device of the present invention; Fig. 4 is the structural representation that the conical seat with ejector half oxygen rifle nitrogen seal device of the present invention is fixed on the oxygen muzzle.
As shown in the figure, what the present invention proposed comprises conical seat 3, conical disc 2 and sealing pad 1 with ejector half oxygen rifle nitrogen seal device, described conical disc 2 and sealing pad 1 are set on the described oxygen rifle 6, wherein: described conical seat 3 has bevel sealing surface 31 in the back taper at least, bevel sealing surface 31 is provided with more than one through hole 32 in described, this through hole 32 is connected with nitrogen supply-pipe 8, and the bottom of described conical seat 3 is gone into muzzle 5 with the oxygen rifle of converter and fixedlyed connected.Conical disc 2 can be seated in the described conical seat 3, this conical disc 2 has the outer bevel sealing surface 21 of the back taper that matches with the interior bevel sealing surface 31 of described conical seat 3, and is arranged on described outer bevel sealing surface inboard, diameter greater than the more oxygen rifle passage 23 of oxygen rifle external diameter.Outer bevel sealing surface 21 by described conical disc 2 cooperates with the interior bevel sealing surface 31 of conical seat, plays the sealing function between conical disc 2 and the conical seat 3, and high-temperature flue gas and carbon monoxide can not leaked from here.Be provided with upper cover plate 24 between bevel sealing surface 21 and the oxygen rifle passage 23 outside described, described outer bevel sealing surface 21 is provided with the nitrogen inlet 22 that is connected with described through hole 32, and described upper cover plate 24 is provided with more than one nitrogen outlet 25.Described sealing pad 1 is a column, and can laterally be seated movably on the upper cover plate 24 of described conical disc 2 with oxygen rifle 6, a plurality of nitrogen seal rings 15 are fixed on sidewall 11 inboards of described sealing pad 1 vertically, and described oxygen rifle 6 passes described nitrogen seal ring 15 and goes into muzzle 5 through the oxygen rifle that described conical disc 2 enters converter.The external diameter of the internal diameter of described nitrogen seal ring 15 and described oxygen rifle 6 forms running fit, and described nitrogen seal ring 15 is connected with nitrogen outlet 25 on the described upper cover plate 24.Wherein, the quantity of described through hole 32, nitrogen inlet 22 is not limited, and can correspondence be provided with one, can correspondence is provided with a plurality ofly yet, and its quantity determines according to the size of equipment, the amount of required nitrogen.Preferred scheme is when a plurality of through holes 32, nitrogen inlet 22 are set, and each described through hole 32 and nitrogen inlet 22 are arranged on sustained height, and uniform distribution.
The low angling hole of side opening in the bevel sealing surface 31 in described through hole 32 can be arranged to, this through hole 32 is downward-sloping setting as shown in Figure 4, its order is for when sealing pad 1 and conical disc 2 promote with oxygen rifle 6, dropping on the slag dust of its hole face can slide down and can not stay in the hole along the inclined-plane, is beneficial to the sealing between conical disc 2 and the conical seat 3.
In a preferred embodiment, described conical disc 2 also has lower cover 26, constitutes second cavity 27 of the ccontaining nitrogen of energy between described upper and lower cover plate 24,26 and outer bevel sealing surface 21, the oxygen rifle passage 23.
And, in order to guarantee can not rest on the interior bevel sealing surface 31 of conical seat 3, bevel sealing surface 31 in described is arranged to the exterior angle angle α that forms between itself and the horizontal plane angle of repose greater than slag from the slag that oxygen rifle 6 drops.
Preferred each described nitrogen seal ring 15 is by two video discs 151 that tapering is different, 152 constitute, this two video disc 151,152 are arranged in the described sealing pad 1 with different angles of inclination, thereby make the spacing of two video disc spacings of inlet mouth end 153 greater than air outlet end 154, form channel of nitrogen 150 between two described video discs, two described video discs 151,152 inlet mouth end 153 is fixedlyed connected with the sidewall 11 of described sealing pad, two air outlet ends 154 have formed very circlet seam of slit, nitrogen is blown out by this circumferential weld, when stopping 6 blowing of oxygen rifle, high-temperature flue gas and carbon monoxide are overflowed from the gap between oxygen rifle 6 and the nitrogen seal ring.
Further, the inlet mouth end 153 that described nitrogen seal ring 15 is arranged to fixedly connected with the sidewall 11 of described sealing pad 1 is higher than towards the air outlet of oxygen rifle end 154.The present invention's nitrogen of ejection in the nitrogen seal ring 15 are from top to bottom by air outlet end 154 ejections of bottom, and the structure that blows out nitrogen with known level is compared, and the nitrogen air curtain of the present invention's ejection has better sealing effectiveness.
Please cooperate referring to Fig. 2, in a specific embodiment, sidewall 11 outsides of described sealing pad 1 can be provided with cylindrical outer wall 12, one top panel 13 is fixedlyed connected with the sidewall 11 of described sealing pad 1 and the upper/lower terminal face of outer wall 12 respectively with a lower panel 14, forms first cavity 16 of the ccontaining nitrogen of energy between described upper and lower panel 13,14 and sealing pad sidewall 11, the outer wall 12.Described lower panel 14 be provided with described conical disc upper cover plate 24 on nitrogen outlet 25 corresponding breather holes 141, the sidewall 11 of described sealing pad 1 is provided with the opening 110 that the channel of nitrogen 150 of a plurality of and described nitrogen seal ring 15 is connected.
The nitrogen outlet 25 that is provided with on the upper cover plate 24 of above-mentioned conical disc 2, and the quantity of the breather hole 141 that is provided with on the lower panel 14 of sealing pad 1 is not limited, usually the quantity of this nitrogen outlet 25 and breather hole 141 equates, can be provided with a plurality of, to guarantee having competent nitrogen to supply with first cavity 16.And axial (short transverse) along sidewall 11 is provided with more than one opening 110, and be corresponding with the inlet mouth end 153 of a nitrogen seal ring 15 at each opening 110 that sidewall 11 short transverses are provided with.In addition, inlet mouth end 153 corresponding positions circumferential and each nitrogen seal ring 15 at sidewall 11 can be provided with a plurality of openings 110, enter nitrogen amount in the channel of nitrogen 150 with raising, and, guarantee effectively stopping high-temperature flue gas and carbon monoxide by the nitrogen intensity of air outlet end 154 ejections.
For avoiding nitrogen to reveal from opening 141,25,22 and 32, each mouthful all should be in the scope of the contact surface of conical seat, conical disc and sealing pad.
In another feasible embodiment, sidewall 11 outsides of described sealing pad 1 can not be provided with cylindrical outer wall 12, only a lower panel is set in the lower surface of sidewall 11, its upper surface also can be provided with a top panel, the opening 110 that is connected with the inlet mouth end 153 of described nitrogen seal ring 15 is set on sidewall, by having certain flexible pipeline the breather hole of opening 110 with sealing pad 1 is connected, nitrogen is transported in the channel of nitrogen of nitrogen seal ring.
Preferably, the outside of the interior bevel sealing surface 31 of described conical seat 3 is provided with an exterior tube 33, and described nitrogen supply-pipe 8 is connected with the sidewall of described exterior tube 33; The upper and lower end face of bevel sealing surface 31 and exterior tube 33 is fixedlyed connected with base plate 35 with top board 34 respectively in described, forms the 3rd cavity 36 of the ccontaining nitrogen of energy between described top board 34, base plate 35 and interior bevel sealing surface 31, the exterior tube 33.
Certainly, described conical seat 3 also can not be provided with exterior tube 33, and described nitrogen supply-pipe 8 can directly be fixedlyed connected with the through hole 32 on the interior bevel sealing surface 31.
For the ease of maintenance and maintenance to sealing pad 1, conical disc 2, can be convexly equipped with on the outer wall of described oxygen rifle 6 and put block 4, described block 4 external diameters can promote with oxygen rifle 6 at sealing pad 1 described in the process that promotes described oxygen rifle 6 and conical disc 2 greater than the diameter of described oxygen rifle passage 23.
Principle of work of the present invention is: the present invention propose with ejector half oxygen rifle nitrogen seal device, be mainly used in sealing to oxygen muzzle 5.The exterior angle angle α that forms between wherein interior bevel sealing surface 31 and the horizontal plane is greater than the angle of repose of slag, and the interior bevel sealing surface 31 of conical seat 3 is identical with the tapering of the outer bevel sealing surface 21 of conical disc 2, thereby the slag that drops on the oxygen rifle can not stopped on interior bevel sealing surface 31, guaranteed the stopping property between interior bevel sealing surface 31 and the outer bevel sealing surface 21.
When oxygen rifle 6 descends, the conical disc 2 and the sealing pad 1 that are seated on the block 4 together descend with oxygen rifle 6, when through conical seat 3, then conical disc 2 is seated on the interior bevel sealing surface 31 of conical seat 3,1 of sealing pad is seated on the conical disc upper cover plate 24, at this moment oxygen rifle 6 continues to descend, because sealing pad 1 can laterally move with oxygen rifle 6 on conical disc 2 upper cover plates 24 with oxygen rifle 6, therefore, also do not influence moving of oxygen rifle 6 even conical seat 3 has been shifted with conical disc 2, oxygen rifle 6 can continue to descend and can not be stuck on the sealing pad 1.The nitrogen that seals in Fig. 1 the path shown in the arrow by the ejection of the circumferential weld (air outlet end 154) of the nitrogen seal ring 15 of sealing pad 1, the effusion of high-temperature flue gas and carbon monoxide when stopping the blowing of oxygen rifle.The shape of the nitrogen outlet 25 of conical disc 2 and the nitrogen inlet 141 of sealing pad 1 and position should be considered definite, are communicated with but also can guarantee that with the nitrogen that guarantees not only to guarantee between conical disc 2 and the sealing pad 1 moving horizontally in the scope of sealing pad nitrogen can not be leaked to the outside and go.Promptly, the distance H at the described conical disc of distance 2 centers, periphery solstics of the nitrogen outlet 25 that is provided with on the upper cover plate 24 of described conical disc is less than the distance h at the described sealing pad of distance 1 center, periphery solstics of the breather hole 141 that is provided with on the lower panel 14 of described sealing pad, even guarantee that thus skew has taken place its axis in oxygen rifle 6 decline processes, described breather hole 141 still can be connected with nitrogen outlet 25, and nitrogen outlet 25 also can not be offset to the outside of sealing pad 1.Wherein, the periphery solstics A2 of the periphery solstics A1 of described breather hole 141 and described nitrogen outlet 25 all refers to hole (or mouth) wall of the farthest, center of each breather hole 141, the nitrogen outlet 25 described sealing pads 1 of distance or conical disc 2.
When promoting the oxygen rifle, when the block on it 4 contacts with conical disc 2, then simultaneously conical disc 2 and sealing pad 1 are taken up.
Characteristics of the present invention are that sealing pad can move at the conical disc upper surface with the oxygen rifle, can make the oxygen rifle have certain degree of freedom to have good sealing effectiveness simultaneously again in the horizontal direction.
The above only is the schematic embodiment of the present invention, is not in order to limit scope of the present invention.Any those skilled in the art, equivalent variations and the modification done under the prerequisite that does not break away from design of the present invention and principle all should belong to the scope of protection of the invention.And need to prove, each integral part of the present invention is not limited in above-mentioned overall applicability, each technical characterictic of describing in the specification sheets of the present invention can select one to adopt or select the multinomial use that combines separately according to actual needs, therefore, other combination relevant with this case inventive point and concrete the application have been contained in the present invention in the nature of things.
Claims (10)
1. one kind with ejector half oxygen rifle nitrogen seal device, it is characterized in that, describedly comprises conical seat, conical disc and sealing pad with ejector half oxygen rifle nitrogen seal device, and described conical disc and sealing pad are set on the described oxygen rifle, wherein:
Described conical seat has bevel sealing surface in the back taper at least, described in bevel sealing surface be provided with more than one through hole, this through hole is connected with the nitrogen supply-pipe, the bottom of described conical seat is gone into muzzle with the oxygen rifle of converter and is fixedlyed connected;
Described conical disc has the outer bevel sealing surface of the back taper that matches with the interior bevel sealing surface of described conical seat, and is arranged on described outer bevel sealing surface inboard, the diameter oxygen rifle passage greater than oxygen rifle external diameter; Be provided with upper cover plate between bevel sealing surface and the oxygen rifle passage outside described, described outer bevel sealing surface is provided with the nitrogen inlet that is connected with described through hole, and described upper cover plate is provided with more than one nitrogen outlet;
Described sealing pad is a hollow column, and can be seated on the upper cover plate of described conical disc movably, a plurality of nitrogen seal rings are fixed on the inside sidewalls of described sealing pad vertically, and described oxygen rifle passes described nitrogen seal ring and goes into muzzle through the oxygen rifle that described conical disc enters converter; The internal diameter of described nitrogen seal ring and described oxygen rifle external diameter form running fit, and described nitrogen seal ring is connected with nitrogen outlet on the described upper cover plate.
2. as claimed in claim 1 with ejector half oxygen rifle nitrogen seal device, it is characterized in that, each described nitrogen seal ring is made of two video discs, this two video disc is obliquely installed in described sealing pad, form channel of nitrogen between two described video discs, the inlet mouth end of two described video discs is fixedlyed connected with the sidewall of described sealing pad, and two video disc spacings of inlet mouth end are greater than the spacing of air outlet end.
3. as claimed in claim 2ly it is characterized in that with ejector half oxygen rifle nitrogen seal device the inlet mouth end that described nitrogen seal ring is arranged to fixedly connected with the sidewall of described sealing pad is higher than towards the air outlet of oxygen rifle end.
4. as claimed in claim 1 with ejector half oxygen rifle nitrogen seal device, it is characterized in that, the sidewall outside of described sealing pad is provided with outer wall, one top panel is fixedlyed connected with the sidewall of described sealing pad and the upper/lower terminal face of outer wall respectively with a lower panel, forms first cavity of the ccontaining nitrogen of energy between described upper and lower panel and sealing pad sidewall, the outer wall; Described lower panel be provided with described conical disc upper cover plate on the corresponding breather hole of nitrogen outlet, the sidewall of described sealing pad is provided with the opening that a plurality of and described nitrogen seal ring is connected.
5. as claimed in claim 4 with ejector half oxygen rifle nitrogen seal device, it is characterized in that the periphery solstics of the breather hole that is provided with on the lower panel of distance less than described sealing pad at nitrogen outlet periphery solstics that is provided with on the described upper cover plate and described conical disc center is apart from the distance at described sealing pad center.
6. as claim 2 or 3 described with ejector half oxygen rifle nitrogen seal device, it is characterized in that, the sidewall outside of described sealing pad is provided with outer wall, one top panel is fixedlyed connected with the sidewall of described sealing pad and the upper/lower terminal face of outer wall respectively with a lower panel, forms first cavity of the ccontaining nitrogen of energy between described upper and lower panel and sealing pad sidewall, the outer wall; Described lower panel be provided with described conical disc upper cover plate on the corresponding breather hole of nitrogen outlet, described sealing pad inwall is provided with the opening that the inlet mouth between a plurality of and two video discs that form described nitrogen seal ring is connected.
7. as claimed in claim 1ly it is characterized in that with ejector half oxygen rifle nitrogen seal device described conical disc also has lower cover, constitute between described upper and lower cover plate and outer bevel sealing surface, the oxygen rifle passage can ccontaining nitrogen second cavity.
8. as claimed in claim 1ly it is characterized in that the exterior angle angle that forms between bevel sealing surface and the horizontal plane in described is greater than the angle of repose of slag, so that the slag that drops from the oxygen rifle can not rest on its conical surface with ejector half oxygen rifle nitrogen seal device.
9. describedly it is characterized in that with ejector half oxygen rifle nitrogen seal device the outside of the interior bevel sealing surface of described conical seat is provided with a tubular exterior tube as claim 1 or 8, described nitrogen supply-pipe is connected with the sidewall of described exterior tube; The upper and lower end face of bevel sealing surface and exterior tube is fixedlyed connected with base plate with top board respectively in described, forms the 3rd cavity of the ccontaining nitrogen of energy between described top board, base plate and interior bevel sealing surface, the exterior tube.
10. as claimed in claim 1 with ejector half oxygen rifle nitrogen seal device, it is characterized in that, convex with block on the described oxygen rifle outer wall, described block external diameter can promote with the oxygen rifle at sealing pad described in the process that promotes described oxygen rifle and conical disc greater than the diameter of the described oxygen rifle passage of described conical disc.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101352377A CN102181600B (en) | 2011-05-24 | 2011-05-24 | Follow-up oxygen lance nitrogen seal device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101352377A CN102181600B (en) | 2011-05-24 | 2011-05-24 | Follow-up oxygen lance nitrogen seal device |
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| CN102181600A true CN102181600A (en) | 2011-09-14 |
| CN102181600B CN102181600B (en) | 2012-07-25 |
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| CN2011101352377A Active CN102181600B (en) | 2011-05-24 | 2011-05-24 | Follow-up oxygen lance nitrogen seal device |
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| CN103243193A (en) * | 2013-05-11 | 2013-08-14 | 首钢长治钢铁有限公司 | Nitrogen sealing device of lower muzzle of steel converter |
| CN103882179A (en) * | 2014-03-25 | 2014-06-25 | 济钢集团有限公司 | Oxygen gun opening nitrogen sealing device |
| CN105387214A (en) * | 2015-12-15 | 2016-03-09 | 北京神雾环境能源科技集团股份有限公司 | Sealing device for sealed calcium carbide furnace charging system |
| CN106399623A (en) * | 2016-05-24 | 2017-02-15 | 江苏永钢集团有限公司 | Oxygen lance nitrogen sealing plug |
| CN115261558A (en) * | 2022-09-02 | 2022-11-01 | 唐山创微自动化设备有限公司 | Sublance mouth sealing cap |
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| CN201065414Y (en) * | 2007-06-15 | 2008-05-28 | 鞍钢股份有限公司 | Energy-saving converter oxygen gunpoint nitrogen sealing cap |
| CN201321469Y (en) * | 2008-12-18 | 2009-10-07 | 宝山钢铁股份有限公司 | Nitrogen sealing stopper end for converter oxygen lance |
| CN201660658U (en) * | 2010-04-16 | 2010-12-01 | 中冶赛迪工程技术股份有限公司 | Oxygen lance nitrogen sealing device |
| CN202081126U (en) * | 2011-05-24 | 2011-12-21 | 中冶京诚工程技术有限公司 | Follow-up type oxygen lance nitrogen sealing device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103243193A (en) * | 2013-05-11 | 2013-08-14 | 首钢长治钢铁有限公司 | Nitrogen sealing device of lower muzzle of steel converter |
| CN103882179A (en) * | 2014-03-25 | 2014-06-25 | 济钢集团有限公司 | Oxygen gun opening nitrogen sealing device |
| CN103882179B (en) * | 2014-03-25 | 2015-09-30 | 济钢集团有限公司 | A kind of oxygen muzzle nitrogen seal device |
| CN105387214A (en) * | 2015-12-15 | 2016-03-09 | 北京神雾环境能源科技集团股份有限公司 | Sealing device for sealed calcium carbide furnace charging system |
| CN105387214B (en) * | 2015-12-15 | 2017-11-03 | 神雾科技集团股份有限公司 | A kind of closed calcium carbide furnace charging system sealing device |
| CN106399623A (en) * | 2016-05-24 | 2017-02-15 | 江苏永钢集团有限公司 | Oxygen lance nitrogen sealing plug |
| CN115261558A (en) * | 2022-09-02 | 2022-11-01 | 唐山创微自动化设备有限公司 | Sublance mouth sealing cap |
| CN115261558B (en) * | 2022-09-02 | 2024-04-26 | 唐山创微自动化设备有限公司 | Vice muzzle sealing cap |
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