CN101205566B - Movable hood mechanical seal for converter vapourization cooling system - Google Patents
Movable hood mechanical seal for converter vapourization cooling system Download PDFInfo
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- CN101205566B CN101205566B CN2007101788017A CN200710178801A CN101205566B CN 101205566 B CN101205566 B CN 101205566B CN 2007101788017 A CN2007101788017 A CN 2007101788017A CN 200710178801 A CN200710178801 A CN 200710178801A CN 101205566 B CN101205566 B CN 101205566B
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Abstract
A movable fume cover mechanical sealing device for converter vaporizing cooling systems is provided. Aiming at the defects of the prior movable fume cover mechanical sealing device, the present invention provides an auxiliary nitrogen sealing type mechanical sealing device, and adopts the proposal that a filling sealing device, a nitrogen sealing device and a circulative cooling device are arranged between a movable fume cover and a water wall of furnace mouth fixing segment. The present invention has the advantages of saving nitrogen, reducing cost, prolonging the life span of equipment, having high coal gas quality and providing convenience for maintenance. Therefore, on the premise of guaranteeing steelmaking production, the patent greatly decreases nitrogen consumption per ton of steel and increases economic benefit, which is beneficial for popularization and application.
Description
Technical field
The present invention relates to the tightness system of a kind of ferrous metallurgy subject and power-saving technology ambit, particularly relate to a kind of movable hood mechanical seal for converter vapourization cooling system.
Background technology
The converter steelmaking evaporated cooling system now generally adopts the design of not combustion method, to reclaim combustiblecomponents CO in the flue gas as far as possible.Need the control high-temperature furnace gas in fire door place incendiary share in the smelting process, improve the working efficiency of flue gas purifying equipment and the coal gas of converter quality of recovery.Therefore must the restricted passage movable gas hood and the mouth fixed section water wall between the air capacity that enters of gap, the while also will avoid flue gas to spill from this slit.Nitrogen-sealed or steam seal mode are generally adopted in sealing between existing movable gas hood and the mouth fixed section water wall, see also shown in the accompanying drawing 1.Adopt the nitrogen-sealed mode need consume a large amount of nitrogen, and these nitrogen sneak in the flue gas, can reduce the coal gas of converter quality; The steam seal mode causes near the flue water-wall corrosion the vapor-nozzle easily, reduces the flue life-span.
This shows, on above-mentioned existing converter vapourization cooling system movable gas hood is sealed in structure and uses, obviously still have inconvenience and defective, and demand urgently further being improved.In order to solve the problem that the movable gas hood sealing exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of movable smoke hood sealing arrangement of novel texture, just become the current industry utmost point to need improved target.
Summary of the invention
Exist a large amount of nitrogen of consumption and nitrogen to sneak into the problem that reduces the coal gas of converter quality in the flue gas at existing nitrogen-sealed mode, and the vapor seal mode easily causes near the problem of the flue water-wall corrosion of vapor-nozzle, the invention provides the mechanically-sealing apparatus of the auxiliary nitrogen-sealed formula of a kind of packing seal, it can significantly reduce nitrogen consumption, improve sealing effectiveness, improve gas quality simultaneously, prolong service life of equipment.
The technical scheme that is adopted is for achieving the above object:
A kind of movable hood mechanical seal for converter vapourization cooling system is characterized in that: the place, slit between movable gas hood and mouth fixed section water wall simultaneously stuffing seal is set and nitrogen gas seal equipment seals; The structure of described nitrogen gas seal equipment is, comprises female pipe of nitrogen and nitrogen-sealed chamber: described nitrogen-sealed chamber is to be the cavity that surrounds by the mouth fixed section water wall on one side, manages a plurality of nitrogen nozzles that are communicated with the nitrogen mother and all is arranged in the nitrogen-sealed chamber; Described nitrogen gas seal equipment is fixed on the movable gas hood, concrete annexation is: be fixed with clamping plate on the described movable gas hood No. three, the top of No. three clamping plate is provided with clamping plate No. two, sealing plate by vertical welding between described No. three clamping plate and No. two clamping plate carries out fixing, and described nitrogen-sealed chamber is surrounded by No. two clamping plate, No. three clamping plate, sealing plate and mouth fixed section water wall; Described stuffing seal is arranged on the other end with the corresponding nitrogen-sealed of cooling back installation chamber; Described stuffing seal comprises clamping plate No. one, cooperate fixing by bolt, nut and set nut between described clamping plate and No. two clamping plate, in the cavity that surrounds between clamping plate and No. two clamping plate filler is housed, described filler is the ultra-fine cotton felt of high silica; Described cooling back installation is made up of heat-conducting plate and circulation cooling tank, and described heat-conducting plate and nitrogen-sealed chamber are bolted to connection; Described circulation cooling tank is fixed on the other end with the corresponding heat-conducting plate in nitrogen-sealed chamber, and described circulation cooling tank is communicated with the low pressure recycle pump of converter vapourization cooling system.
Preferably, be fixed with copper sheet by removable mode on described No. three clamping plate, described copper sheet is arranged near mouth fixed section water wall place; Be fixed with aluminium flake by removable mode on described No. two clamping plate, described aluminium flake is arranged near mouth fixed section water wall place; Described cavity by sealing plate, be fixed on No. two on the clamping plate aluminium flake, be fixed on No. three copper sheet and the mouth fixed section water wall on the clamping plate and surround.Described No. three clamping plate are steel plates.
More preferably, described heat-conducting plate can be fixedlyed connected with No. three clamping plate, copper sheet, No. two clamping plate or aluminium flake; Aforementioned circulation cooling tank cross section is preferably rectangle or circle.
Preferably, be fixed with aluminium flake by removable mode on clamping plate, described aluminium flake is arranged near mouth fixed section water wall place.
The present invention has the following advantages:
(1) the present invention seals slit between movable gas hood and the mouth fixed section water wall by filler and nitrogen-sealed mode, because nitrogen is arranged in the cavity of a relative closure, only need to feed a small amount of low-pressure nitrogen, therefore can not occur again that a large amount of nitrogen are sneaked in the flue gas and the problem that reduces the coal gas of converter quality, the problem that also can not occur steam corrosion flue water wall again, therefore saved nitrogen, improved leakage efficiency, and cost is reduced, cut down the consumption of energy greatly, service life of equipment prolongs, and the gas quality height, easy access.
(2) the present invention is by the circulation cooling tank is set, and is simple in structure, can reach better cooling performance, increases the service life.
In sum, mechanically-sealing apparatus of the present invention under the prerequisite that guarantees STEELMAKING PRODUCTION, greatly reduces a ton steel nitrogen consumption, prolongs service life of equipment, improves gas quality, has improved economic benefit, therefore is beneficial to and applies.
Description of drawings
Fig. 1 is the movable gas hood sealed structural representation of prior art.
Fig. 2 is the structural representation of movable gas hood mechanical seal of the present invention.
Embodiment
Reach technique means and the effect that predetermined purpose is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of movable gas hood mechanical seal, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Explanation by embodiment, when can being to reach technique means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet appended literal and accompanying drawing only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
Embodiment one:
One of innovative point of this patent is to utilize simultaneously filler and nitrogen to realize the sealing between movable gas hood and the converter mouth canned paragraph water wall.
The structure of the described movable hood mechanical seal for converter vapourization cooling system of present embodiment is that stuffing seal A is set the place, slit between movable gas hood 26 and mouth fixed section water wall 25 simultaneously and nitrogen gas seal equipment B seals, with reference to Fig. 2.
Described nitrogen gas seal equipment B comprises female pipe 16 of nitrogen and nitrogen-sealed chamber 24.Described nitrogen-sealed chamber 24 is by the cavity of mouth fixed section water wall 25 for surrounding on one side, all is arranged in the nitrogen-sealed chamber 24 with the female pipe of the nitrogen 16 a plurality of nitrogen nozzles 23 that are communicated with, and the female pipe 16 of described nitrogen is wrapped in the lagging material 18.
Described nitrogen gas seal equipment is fixed on the movable gas hood 26, and concrete annexation is:
Be fixed with No. three clamping plate 17 on the described movable gas hood 26, the top of No. three clamping plate 17 is provided with clamping plate 14 No. two, fix by the sealing plate 15 of vertical welding between described No. three clamping plate 17 and No. two clamping plate 14, described nitrogen-sealed chamber 24 is the rectangular cavity that surrounded by No. two clamping plate 14, No. three clamping plate 17, sealing plate 15 and mouth fixed section water wall 25.Cool off by the type of cooling of movable gas hood in the prior art in the described nitrogen-sealed of present embodiment chamber 24.
In actual the use; described sealing plate 15 is omissible; the i.e. trilateral nitrogen-sealed chamber that surrounds by No. two clamping plate 14, No. three clamping plate 17 and mouth fixed section water wall 25; also can realize the purpose of this patent; perhaps increase other sealing plates as required again and form the cavity of other shapes; so long as serve as the cavity that surrounds on one side with mouth fixed section water wall 25, all should be at the protection domain of this patent.
Described No. three clamping plate 17 are steel plates, and steel plate has the advantage of high strength and deformation.
Aforementioned stuffing seal A can be the structure of stuffing seal in the existing movable gas hood, also can adopt the described structure of present embodiment.
The described stuffing seal of present embodiment comprises clamping plate 10 No. one, cooperates fixingly between described clamping plate 10 and No. two clamping plate 14 by bolt 22, nut 21 and set nut 12, tightens by nut and can compress filler.In the cavity that surrounds between clamping plate 10 and No. two clamping plate 14 filler 13 is housed, described filler 13 adopts the ultra-fine cotton felt of high silica of higher melt.In the space that two clamping plates and mouth fixed section water wall surround because filler 13 is directly packed into, so between clamping plate 10 and the mouth fixed section water wall, should have less slit between No. two clamping plate 14 and the mouth fixed section water wall, drop out to avoid filler.Be coated with refractory materials 11 in the outside of clamping plate 10.
In addition, No. two clamping plate are connected with the described bolt of present embodiment that fixedly is not limited between clamping plate, and can realize the relatively-stationary any mode of connection in the two position, as welding etc., and all should be within the protection domain of this patent.
Embodiment two:
Present embodiment be on the basis of embodiment one structure to the distortion in nitrogen-sealed chamber, thereby realize sealing better.
When distance is excessive between described No. two clamping plate of embodiment one 14, No. three clamping plate 17 and the mouth fixed section water wall, can adopt the described structure of present embodiment.
The structure of present embodiment and embodiment one difference are that be fixed with copper sheet 7 by removable mode on described No. three clamping plate 17, copper sheet 7 can be bilayer, and described copper sheet 7 is arranged near mouth fixed section water wall 25 places.Be fixed with aluminium flake 6 by removable mode on described No. two clamping plate 14, described aluminium flake 6 can be fixed on by the cooperation of flat nut 21 and bolt 22 on No. two clamping plate, and described aluminium flake 6 is arranged near mouth fixed section water wall 25 places; Because therefore an end of aluminium flake 6 and copper sheet 7 is avoided causing nitrogen owing to the slit is excessive and is revealed too much all near the mouth fixed section water wall;
Described cavity 24 by sealing plate 15, be fixed on No. two on the clamping plate 14 aluminium flake 6, be fixed on No. three copper sheets 7 on the clamping plate 17 and surround with mouth fixed section water wall 25.
This cavity 24 has the effect identical with embodiment one.
Need to prove; the aluminium flake of mentioning in this patent, copper sheet can also be replaced by other materials with different mechanics or heat transfer property; as steel plate, copper coin, galvanized sheet iron, non-metallic fibers plate etc.; simultaneously; the top that they both can be arranged on clamping plate also can be arranged on the below of clamping plate; it also is not limited to the said bolt of present embodiment with fixed form between the clamping plate and is connected, as long as can realize other mode of connection of removable mode, all within the protection domain of this patent.
Embodiment three:
For the structure that has between clamping plate 10, No. two clamping plate 14 and the mouth fixed section water wall than small gap, can adopt as encapsulation scheme as described in the embodiment one.
When considering when conveniently laying filler, just should have big distance between clamping plate 10 and/or No. two clamping plate 14 and the mouth fixed section water wall, can adopt the described structure of present embodiment this moment.
The difference of present embodiment and embodiment one is:
On clamping plate 10, be fixed with aluminium flake 5 by removable mode, aluminium flake 5 is fixed on clamping plate 10 by bolt 1, nut 3 and the set nut 2 that cooperatively interacts, described aluminium flake 5 is arranged near mouth fixed section water wall 25 places, it not only can realize the better seal effect, can realize being convenient for changing simultaneously filler.
In actual the use; when having had small distance between clamping plate 10 and the mouth fixed section water wall and having considered conveniently to lay filler; the fixed position of described aluminium flake 5 then is not limited at close mouth fixed section water wall 25 places; as long as can realize the easy disassembly between aluminium flake and the clamping plate, it is fixed on any position on the clamping plate all should be within the protection domain of this patent.
In this patent, No. one clamping plate 10 are galvanized sheet irons, and No. two clamping plate 14 are steel plates.In actual the use, No. one clamping plate 10 also can replace with the material with different mechanics or heat transfer property, as steel plate, copper coin, aluminium sheet, non-metallic fibers plate etc.; No. two clamping plate can replace with the material with different mechanics or heat transfer property, as copper coin, aluminium sheet, galvanized sheet iron, non-metallic fibers plate etc., therefore all within the protection domain of this patent.
Embodiment four:
Another innovative point of this patent is to increase cooling back installation C again on the described architecture basics of aforementioned embodiments, and concrete structure is as follows:
Cooling back installation C is made up of heat-conducting plate 8 and circulation cooling tank 9, and described heat-conducting plate 8 is fixedlyed connected by bolt 22 with nitrogen-sealed chamber 24;
Described heat-conducting plate 8 and No. three clamping plate 17, copper sheet 7, No. two clamping plate 14 or aluminium flake 6 be fixedly connected can realize being connected of heat-conducting plate and nitrogen-sealed chamber 24.
Described circulation cooling tank 9 is fixed on the other end with nitrogen-sealed chamber 24 corresponding heat-conducting plates 8, described circulation cooling tank 9 is communicated with the low pressure recycle pump of converter vapourization cooling system, water coolant from vaporization cooling low pressure recycle pump flows through in groove, can reach better cooling performance, increase the service life.
Described circulation cooling tank 9 cross sections are rectangle or circle, and are simple in structure, convenient processing.
During actual the use, circulation cooling tank C can be fixed on the movable gas hood, stuffing seal A, nitrogen gas seal equipment B are fixed on the movable gas hood by heat-conducting plate, circulation cooling tank.
Embodiment five:
The described scheme of present embodiment is that embodiment one described stuffing seal A, nitrogen gas seal equipment B and cooling back installation C all are arranged on the same tightness system, as shown in Figure 2, thus realize easy access, long service life better, cut down the consumption of energy, produce the advantage of better cooling performance.
The above, it only is preferred embodiment of the present invention, be not in order to limiting the present invention, any those skilled in the art are not in breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations.In every case be the content that does not break away from technical solution of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical solution of the present invention according to technical spirit of the present invention.
Claims (6)
1. movable hood mechanical seal for converter vapourization cooling system is characterized in that: the place, slit between movable gas hood (26) and mouth fixed section water wall (25) simultaneously stuffing seal is set and nitrogen gas seal equipment seals; Described nitrogen gas seal equipment comprises the female pipe of nitrogen (16) and nitrogen-sealed chamber (24), described nitrogen-sealed chamber (24) is to be the cavity that surrounds on one side by the mouth fixed section water wall, and a plurality of nitrogen nozzles (23) that are communicated with the female pipe of nitrogen (16) all are arranged in the nitrogen-sealed chamber (24);
Described nitrogen gas seal equipment is fixed on the movable gas hood (26), concrete annexation is: be fixed with No. three clamping plate (17) on the described movable gas hood (26), the top of No. three clamping plate (17) is provided with No. two clamping plate (14), fix by the sealing plate (15) of vertically welding between described No. three clamping plate (17) and No. two clamping plate (14), described nitrogen-sealed chamber (24) is surrounded by No. two clamping plate (14), No. three clamping plate (17), sealing plate (15) and mouth fixed section water wall (25);
Described stuffing seal is arranged on the other end with the corresponding nitrogen-sealed of cooling back installation chamber (24); Described stuffing seal comprises clamping plate (10), cooperate fixing by bolt (22), nut (21) and set nut (12) between described clamping plate (10) and No. two clamping plate (14), in the cavity that surrounds between clamping plate (10) and No. two clamping plate (14) filler (13) is housed, described filler (13) is the ultra-fine cotton felt of high silica;
Described cooling back installation is made up of heat-conducting plate (8) and circulation cooling tank (9), and described heat-conducting plate (8) is fixedlyed connected by bolt (22) with nitrogen-sealed chamber (24); Described circulation cooling tank (9) is fixed on the other end with the corresponding heat-conducting plate in nitrogen-sealed chamber (24) (8), and described circulation cooling tank (9) is communicated with the low pressure recycle pump of converter vapourization cooling system.
2. movable hood mechanical seal for converter vapourization cooling system according to claim 1 is characterized in that:
Described No. three clamping plate (17) are gone up and are fixed with copper sheet (7) by removable mode, and described copper sheet (7) is arranged near mouth fixed section water wall (25) and locates;
Described No. two clamping plate (14) are gone up and are fixed with aluminium flake (6) by removable mode, and described aluminium flake (6) is arranged near mouth fixed section water wall (25) and locates;
Described nitrogen-sealed chamber (24) by sealing plate (15), be fixed on aluminium flake (6) on No. two clamping plate (14), the copper sheet (7) that is fixed on No. three clamping plate (17) surrounds with mouth fixed section water wall (25).
3. movable hood mechanical seal for converter vapourization cooling system according to claim 2 is characterized in that: described No. three clamping plate (17) are steel plates.
4. movable hood mechanical seal for converter vapourization cooling system according to claim 2 is characterized in that: described heat-conducting plate (8) is fixedlyed connected with No. three clamping plate (17), copper sheet (7), No. two clamping plate (14) or aluminium flake (6).
5. movable hood mechanical seal for converter vapourization cooling system according to claim 1 is characterized in that: described circulation cooling tank (9) cross section is rectangle or circle.
6. movable hood mechanical seal for converter vapourization cooling system according to claim 1, it is characterized in that: go up at clamping plate (10) and be fixed with aluminium flake (5) by removable mode, described aluminium flake (5) is arranged near mouth fixed section water wall (25) and locates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101788017A CN101205566B (en) | 2007-12-05 | 2007-12-05 | Movable hood mechanical seal for converter vapourization cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101788017A CN101205566B (en) | 2007-12-05 | 2007-12-05 | Movable hood mechanical seal for converter vapourization cooling system |
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| Publication Number | Publication Date |
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| CN101205566A CN101205566A (en) | 2008-06-25 |
| CN101205566B true CN101205566B (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101788017A Active CN101205566B (en) | 2007-12-05 | 2007-12-05 | Movable hood mechanical seal for converter vapourization cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374196A (en) * | 2014-11-04 | 2015-02-25 | 中国恩菲工程技术有限公司 | Furnace hood for rotatable metallurgical furnace and rotatable metallurgical furnace provided with same |
| CN104374195A (en) * | 2014-11-04 | 2015-02-25 | 中国恩菲工程技术有限公司 | Furnace hood for rotatable metallurgical furnace and rotatable metallurgical furnace provided with same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605136B (en) * | 2012-04-01 | 2013-04-03 | 通化市五一环保科技股份有限公司 | Soft sealing device for converter mouth and fume hood |
| CN109609723B (en) * | 2018-12-26 | 2024-03-19 | 苏州海陆重工股份有限公司 | Sealing structure of movable smoke hood |
| CN113755664A (en) * | 2021-07-30 | 2021-12-07 | 阳春新钢铁有限责任公司 | Sealing and fire-sealing method for oxygen lance mouth sleeve of fixed smoke hood |
| CN114540572A (en) * | 2022-02-25 | 2022-05-27 | 重庆钢铁股份有限公司 | Converter waste heat boiler steam self-using system and method |
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| EP1055092B1 (en) * | 1998-02-17 | 2002-01-09 | Stelco Inc. | Seal for steel furnace emissions |
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| US3560005A (en) * | 1967-06-16 | 1971-02-02 | Creusot Forges Ateliers | Seal for a rotating chamber |
| EP1055092B1 (en) * | 1998-02-17 | 2002-01-09 | Stelco Inc. | Seal for steel furnace emissions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374196A (en) * | 2014-11-04 | 2015-02-25 | 中国恩菲工程技术有限公司 | Furnace hood for rotatable metallurgical furnace and rotatable metallurgical furnace provided with same |
| CN104374195A (en) * | 2014-11-04 | 2015-02-25 | 中国恩菲工程技术有限公司 | Furnace hood for rotatable metallurgical furnace and rotatable metallurgical furnace provided with same |
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| CN101205566A (en) | 2008-06-25 |
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