CN2905813Y - Multifunctional top-blowing gun for melt steel vacuum refining - Google Patents
Multifunctional top-blowing gun for melt steel vacuum refining Download PDFInfo
- Publication number
- CN2905813Y CN2905813Y CNU2006200400382U CN200620040038U CN2905813Y CN 2905813 Y CN2905813 Y CN 2905813Y CN U2006200400382 U CNU2006200400382 U CN U2006200400382U CN 200620040038 U CN200620040038 U CN 200620040038U CN 2905813 Y CN2905813 Y CN 2905813Y
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- Prior art keywords
- rifle
- expansion segment
- rifle head
- shower nozzle
- gun
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- Expired - Lifetime
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Abstract
The utility model is a top blowing multi-function gun for vacuum refining of the liquid steel, which has functions of blowing oxygen and decarbonization, aluminium adding and temperature increasing with blowing oxygen, powder spraying desulphurization, and gas blowing for heating and cooling steel. It is characterized in that the utility model comprises a multi-segment separable laval nozzle, a ring gas ejection slot bore, a diameter variable cooling pipe on the gun body and gun head. Wherein, no ignition devices are provided on the gun head with automatic ignition when the temperature of the vacuum groove increases to a level; a flame measuring device with adjustable sensitivity is provided. The utility model has advantages of easy installation and replacing of the gun head, no blocking of the gas ejection hole by the splashing matters, sensitive measuring of the flame and long service time for the gun head.
Description
Technical field
The utility model relates to the top blast multifunctional gun that uses in the molten steel vacuum refinement (RH).
Background technology
At present, known RH top blast multifunctional gun generally is arranged in the vacuum tank top, can enter vacuum tank by the top blast multifunctional gun hole on the hot bending pipe.Media such as the required oxygen of top blast multifunctional gun work, argon gas, coal gas, desulfurization powder can enter vacuum tank by each layer dielectric-sleeve in the top blast multifunctional gun, with realize in the RH molten steel vacuum refinement treating processes to molten steel carry out oxygen decarburization, add the aluminium heating by O2 blowing, powder injection desulphurization and RH handle multiple functions such as gap winding-up combustion gas intensification smelting cold steel.
Mainly there is following problem in existing top blast multifunctional gun: 1) Lower Half of Lavalle shower nozzle aditus laryngis and shower nozzle expansion segment connect together, necessary integral replacing, there is multilayer sleeve to need accurate assembling during the assembling of rifle head, blocked and to see by outer layer sleeve during the inner layer sleeve assembling, can only assemble by rule of thumb, assembly quality is difficult to guarantee; 2) gas injection hole is 1～2 row's circular aperture, is blocked by splash easily; Gas injection hole and rifle head intake antrum close together weaken the intensity at this position of rifle head to some extent simultaneously, and the top blast multifunctional gun uses this position of later stage and might leak; 3) the rifle body is identical with rifle head cooling-water duct sectional area, and water coolant is identical with rifle head flow velocity at the rifle body, and cooling performance is bad; 4) portfire of top blast multifunctional gun rifle cephalic par is often blocked by the molten steel of splash, and the portfire life-span is very low.The rifle head fiery device of setting up an office causes rifle head bit architecture complexity, and water coolant circulation area reduces, and resistance is decreased and increased, and is unfavorable to the cooling of rifle head; 5) the flame detection sensitivity is non-adjustable, can not correctly differentiate the light that vacuum tank sends under the top blast multifunctional gun combustion flame and the condition of high temperature sometimes, causes top blast multifunctional gun burning hidden danger.
Summary of the invention
The utility model provides the problem that exists at existing RH top blast multifunctional gun, a kind of improved RH top blast multifunctional gun is proposed, it is convenient to make the rifle head install and change, gas injection hole is by may reducing that splash is blocked, rifle head position intensity is strengthened, cooling performance is good, and the rifle head life-span improves, and combustion flame detects sensitive.
The technical solution of the utility model is:
1 adopt multistage detachable Lavalle shower nozzle, is divided into to be (a) shower nozzle contraction section; (b) aditus laryngis and expansion segment top; (c) expansion segment bottom, wherein shower nozzle contraction section and aditus laryngis and expansion segment top adopt screw thread to add sealing-ring to be connected, and the inclined-plane of aditus laryngis and expansion segment top and expansion segment bottom is connected.Adopt this structure, top blast multifunctional gun function remains unchanged, and rifle head bit architecture obtains simplifying, and the sleeve pipe number of plies that needs accurate assembling has been reduced at the position that can't observe when former the 4th layer (counting from outside to inside) needs accurate assembling and assembling, and it is convenient to install and change.The rifle head can be selected the following array mode of changing according to the situation of fact damaged:
(1) changes the expansion segment bottom separately
(2) change expansion segment bottom+expansion segment top and aditus laryngis
(3) change expansion segment bottom+expansion segment top and aditus laryngis+contraction section
2 adopt annular fuel gas to spray slotted eye, reduce the possibility that gas injection hole is blocked by splash.Annular fuel gas sprays slotted eye relatively away from rifle head intake antrum simultaneously, increases this position intensity.This annular fuel gas sprays slotted eye and is made up of shower nozzle aditus laryngis and expansion segment upper support pin and shower nozzle expansion segment lower bevel.
3 adopt rifle body and the design of rifle head cooling-water duct reducing, rifle body region cooling-water duct diameter is greater than rifle body region cooling-water duct diameter, rifle body and rifle head are provided with the conical section transition, the less rifle body region water coolant flow velocity of raying heat is relatively slow like this, raying heat is very fast than multiple gun head position water coolant flow velocity, the comprehensive good cooling results of whole rifle.
4 rifle head positions are not provided with portfire, utilize the igniting automatically of vacuum tank groove temperature during top blast multifunctional gun winding-up combustion gas.After the cancellation portfire, rifle head bit architecture is simplified, and water coolant circulation area increases, and resistance is decreased and reduced, and helps the cooling of rifle head, improves the rifle head life-span.
5 adopt the adjustable flame detecting device of sensitivity, it is characterized in that a kind of flame detecting device that adopts sensitivity aperture regulative mode, can accurately tell the light that vacuum tank sends under the flame of top rifle multifunctional gun and the condition of high temperature, thereby the flame status that detects the top blast multifunctional gun that can be correct is guaranteed the safe combustion of top blast multifunctional gun.
Description of drawings
Fig. 1 is a RH top blast multifunctional gun full figure.Wherein, the positive diagram of Fig. 1 (a), Fig. 1 (b) is the side diagram.
Fig. 2 is the rifle end A-A cross-section illustration of Fig. 1.
Fig. 3 cuts open the B-B cross-section illustration before the rifle of Fig. 1.
Fig. 4 is the rifle body C-C cross-section illustration of Fig. 1.
Number in the figure: (1) rifle body inner tube, the external 4 layers of pipe of (2) rifle, the external 3 layers of pipe of (3) rifle, (4) the external 2 layers of pipe of rifle, (5) rifle volume surrounding transition conduit, the outer 3 layers of pipe of (6) rifle head, (7) outer 2 layers of pipe of rifle head, (8) rifle head outer tube, (9) shower nozzle contraction section, (10) shower nozzle aditus laryngis and expansion segment top, (11) shower nozzle expansion segment bottom, (12) rifle head backwater cavity, (13) rifle head intake antrum, (14) combustion gas chamber, (15) oxygen chamber, (16) pulvis chamber.(17) rifle body intake antrum, (18) rifle body backwater cavity, (19) rifle volume surrounding pipe, (20) flame detector, (21) adjustable aperture, (22) X-over, (23) top blast multifunctional gun flame detects mouth, (24) combustion flame.
Embodiment
Further describe the utility model below by embodiment.
In the section shown in Figure 2, top blast multifunctional gun rifle body is formed by the steel pipe suit of which floor different diameter, is rifle body inner tube (1) from inside to outside successively, the external 4 layers of pipe of rifle (2), the external 3 layers of pipe of rifle (3), the external 4 layers of pipe of rifle (4), rifle volume surrounding transition conduit (5).The rifle head is the outer 3 layers of pipe (6) of rifle head also for the steel pipe suit of which floor different diameter forms from inside to outside successively, the outer 2 layers of pipe (7) of rifle head, rifle head outer tube (8).Lavalle shower nozzle contraction section (9) and the external 4 layers of pipe of rifle (2) welding, shower nozzle aditus laryngis and expansion segment top (10) add the sealing-ring sealing with shower nozzle contraction section (9) for being threaded.When the rifle head is installed, part (10) is connected to earlier on the shower nozzle contraction section (9), subsequently between the outer 3 layers of pipe (6) of rifle head, the outer 2 layers of pipe (7) of rifle head, rifle head outer tube (8), the shower nozzle expansion segment bottom (11) after the welding well as 1 complete installation to the rifle body, welding between rifle volume surrounding transition conduit (5) and the rifle head outer tube (8) be tightly connected respectively by fitted seal or sealing-ring between external 3 layers of pipe of rifle (3) and the part (6) and between external 4 layers of pipe of rifle (4) and the outer 2 layers of pipe (7) of rifle head.3～5 feets are established on the circumferential direction down in shower nozzle aditus laryngis and expansion segment top (10), the feet end is the inclined-plane, and the inclined-plane between the shower nozzle expansion segment bottom (11) directly contacts, and forms annular fuel gas injection groove between shower nozzle aditus laryngis and expansion segment top (10) feet and between the inclined-plane, shower nozzle expansion segment bottom (11).
In the section shown in Figure 3, rifle body intake antrum (17) (constituting) by external 3 layers of pipe of rifle among Fig. 2 (3) and the external 4 layers of pipe of rifle (4), rifle body backwater cavity (18) (constituting) by the external 4 layers of pipe of rifle (4) among rifle volume surrounding pipe (19) and Fig. 2, rifle head backwater cavity (12) is made of gap between outer 2 layers of pipe (7) of rifle head and the rifle head outer tube (8), rifle head intake antrum (13) is by gap between outer 3 layers of pipe (6) of rifle head and the outer 2 layers of pipe (7) of rifle head, connect by rifle volume surrounding transition conduit (5) between rifle volume surrounding pipe (19) and Fig. 2 rifle head outer tube (8), rifle body backwater cavity and intake antrum sectional area be greater than rifle head backwater cavity and rifle head intake antrum sectional area, promptly water coolant at the flow velocity of rifle head greater than at rifle body region flow velocity.
Among the figure shown in Figure 4, flame detector (20) and adjustable aperture (21) detect on mouthful (23) by the flame that X-over (22) is connected the top blast multifunctional gun, when the top blast multifunctional gun burns, when the ultraviolet light of its combustion flame (24) sees through adjustable aperture (21), can regulate control flame detector (20) by adjustable aperture (21) and receive flare up fire intensity, guarantee that flame detector can correctly detect the flame status of top blast multifunctional gun, can not produce and obscure with the light that vacuum tank under the high temperature sends.
Claims (1)
1, a kind of molten steel vacuum refinement top blast multifunctional gun, but it is characterized in that adopting multistage body fraction Lavalle shower nozzle and annular fuel gas to spray slotted eye; The water-cooled tube of rifle body and rifle head adopts variable-diameter structure; Utilize vacuum tank to light a fire automatically during rifle head position combustion gas; Adopt the adjustable flame detecting device of sensitivity; Wherein:
But described multistage body fraction Lavalle shower nozzle is divided into shower nozzle contraction section (9), aditus laryngis and expansion segment top (10), expansion segment bottom (11), shower nozzle contraction section (9) adds sealing-ring with aditus laryngis and expansion segment top (10) employing screw thread and is connected, and aditus laryngis and expansion segment top (10) are connected with the inclined-plane of expansion segment bottom (11);
Described annular fuel gas sprays slotted eye and is made of the aditus laryngis of shower nozzle and the inclined-plane of expansion segment top (10) and expansion segment bottom (11);
The water-cooled tube of described rifle body and rifle head adopts variable-diameter structure to be: the sectional area of rifle head intake antrum (13), rifle head backwater cavity (12) is respectively less than rifle body intake antrum (17) and rifle body backwater cavity (18) sectional area;
The flame detecting device that described sensitivity is adjustable is: between flame detector (20) and the X-over (22) adjustable aperture (21) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200400382U CN2905813Y (en) | 2006-03-09 | 2006-03-09 | Multifunctional top-blowing gun for melt steel vacuum refining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200400382U CN2905813Y (en) | 2006-03-09 | 2006-03-09 | Multifunctional top-blowing gun for melt steel vacuum refining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2905813Y true CN2905813Y (en) | 2007-05-30 |
Family
ID=38114449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200400382U Expired - Lifetime CN2905813Y (en) | 2006-03-09 | 2006-03-09 | Multifunctional top-blowing gun for melt steel vacuum refining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2905813Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380464A (en) * | 2011-10-31 | 2012-03-21 | 昆明理工大学 | Oil-spraying oil-cooling oxygen gun |
| CN104120215A (en) * | 2014-08-07 | 2014-10-29 | 中冶赛迪上海工程技术有限公司 | Powder spraying top lance for RH vacuum refining |
| CN105823045A (en) * | 2016-05-23 | 2016-08-03 | 苏州宝联重工股份有限公司 | Converter gas nozzle for RH refining furnace and RH refining furnace |
| WO2020193849A1 (en) * | 2019-03-26 | 2020-10-01 | Valmet Technologies Oy | A burner and a method for maintaining a burner lance |
-
2006
- 2006-03-09 CN CNU2006200400382U patent/CN2905813Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380464A (en) * | 2011-10-31 | 2012-03-21 | 昆明理工大学 | Oil-spraying oil-cooling oxygen gun |
| CN102380464B (en) * | 2011-10-31 | 2015-07-22 | 昆明理工大学 | Oil-spraying oil-cooling oxygen gun |
| CN104120215A (en) * | 2014-08-07 | 2014-10-29 | 中冶赛迪上海工程技术有限公司 | Powder spraying top lance for RH vacuum refining |
| CN104120215B (en) * | 2014-08-07 | 2015-11-18 | 中冶赛迪上海工程技术有限公司 | A kind of RH vacuum refinement top rifle that dusts |
| CN105823045A (en) * | 2016-05-23 | 2016-08-03 | 苏州宝联重工股份有限公司 | Converter gas nozzle for RH refining furnace and RH refining furnace |
| WO2020193849A1 (en) * | 2019-03-26 | 2020-10-01 | Valmet Technologies Oy | A burner and a method for maintaining a burner lance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAOSTEEL ENGINEERING + TECHNOLOGY GROUP CO., LTD. Free format text: FORMER OWNER: SHANGHAI BAOSTEEL ENGINEERING + TECHNOLOGY CO., LTD Effective date: 20100629 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201900 NO.2510, TIELI ROAD, SHANGHAI CITY TO: 201900 NO.2510, TIELI ROAD, BAOSHAN DISTRICT, SHANGHAI CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100629 Address after: 201900 Shanghai city Baoshan District Tieli Road No. 2510 Patentee after: Baosteel Engeneering &Technology Group Co., Ltd. Address before: 201900 Shanghai Tieli Road No. 2510 Patentee before: Shanghai Baogang Engineering Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070530 |
|
| EXPY | Termination of patent right or utility model |