CN203976853U - A kind of shower nozzle of RH vacuum refining top gun - Google Patents
A kind of shower nozzle of RH vacuum refining top gun Download PDFInfo
- Publication number
- CN203976853U CN203976853U CN201420444496.7U CN201420444496U CN203976853U CN 203976853 U CN203976853 U CN 203976853U CN 201420444496 U CN201420444496 U CN 201420444496U CN 203976853 U CN203976853 U CN 203976853U
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- annular
- convergent
- shower nozzle
- divergent channel
- core pipe
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Abstract
The utility model discloses a kind of shower nozzle of RH vacuum refining top gun, comprise convergent-divergent channel and be coaxially arranged on the core pipe in convergent-divergent channel, between convergent-divergent channel and core pipe, form annular and shrink pipeline section and annular expansion pipeline section.In the utility model, annular contraction pipeline section and annular expansion pipe segment structure can make Oxygen Flow spray into vacuum chamber with ultrasonic speed, therefore can improve work rifle position, reduce the sticky rifle of the molten steel that splashes, reduce shower nozzle consumption of cooling-water, and annular aditus laryngis can block up rifle than more effective the preventing of the circular aditus laryngis of existing top lance spray nozzle, and the shower nozzle life-span is longer; And annular aditus laryngis can keep, under the condition that oxygen pressure is identical with traditional RH equipment for vacuum refining, increasing oxygen blast flow, improves oxygen decarburization and blows the efficiency that oxygen by adding aluminum heats up; Because its convergent-divergent channel, core pipe and syndeton are between the two all simpler, to compare with existing top lance spray nozzle, it is without adopting precision casting, and manufacture difficulty is obviously reduced.
Description
Technical field
The utility model relates in a kind of metallurgy industry the vacuum degasser for external refining, particularly the shower nozzle of top rifle for a kind of RH vacuum refinement.
Background technology
Molten steel vacuum circulation degassing (RH) technology is a kind of steel secondary refining technique, is the external refining means of producing high quality variety steel indispensability.RH vacuum refining device is at first for liquid steel degassing, its metallurgy principle is to rely on pressure reduction that molten steel is promoted to vacuum chamber, and make Circulating Flow of Molten Steel by blowing argon gas, utilize vacuum environment to reach the object of degassed (N2, H2, O2), its advantage is that speed of response is fast, vacuum tightness is high, metallurgical effect is good.In recent years, the KTB being developed by Kawasaki company (Kawasaki Top Blowing) overhead oxygen rifle, makes RH vacuum refinement possess efficient oxygen blast and forces the greater functionality such as decarburization, CO secondary combustion heating, and RH technology is more widely used.
But no matter be RH-KTB top rifle, or the RH-MFB top rifle of later developing, RH-MESID top rifle, RH-PB top rifle and Chinese patent 200420027046.4, 200610076151.0, 200820174977.5, 200820174973.7, 200820174973.7, 201110000083.0, 201210346652.1, 201310431081.6 related top rifle or shower nozzle, its convergent-divergent channel is generally in central position, blast tube is distributed in convergent-divergent channel outside, indivedual rifle head blast tubes are in central position, and convergent-divergent channel adopts the external tilt distribution of porous, all exist manufacture difficulty large, work-ing life is low, oxygen blast flow is limited, in use, easily block up the shortcomings such as rifle.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of shower nozzle of RH vacuum refining top gun, high to overcome the manufacture difficulty that existing top lance spray nozzle exists, easy stifled rifle, the shortcoming such as work-ing life is low.
The shower nozzle of the utility model RH vacuum refining top gun, comprise convergent-divergent channel and be coaxially arranged on the core pipe in convergent-divergent channel, between described convergent-divergent channel and core pipe, form that annular that cross section diminishes vertically is gradually shunk pipeline section and cross section becomes large annular expansion pipeline section vertically gradually, the connection section that described annular is shunk pipeline section and annular expansion pipeline section is annular aditus laryngis.
Further, on the inwall of described core pipe, be provided with the first sealing-ring annular groove is installed.
Further, on the rear end external cylindrical surface of described convergent-divergent channel, be provided with the second sealing-ring mounting groove.
Further, the front end of described convergent-divergent channel is formed with to the annular tube shaped joint of pipe outside and pipe rear end bending.
Further, on the outer tube wall of described core pipe, be provided with bearing rib, the inner tubal wall of described bearing rib and convergent-divergent channel is welded to connect.
The beneficial effects of the utility model:
1, the shower nozzle of the utility model RH vacuum refining top gun, the annular forming between its convergent-divergent channel and core pipe is shunk pipeline section and annular expansion pipe segment structure can make Oxygen Flow spray into vacuum chamber with ultrasonic speed, what connect annular collapsible tube section and annular expansion pipeline section is ring-type aditus laryngis (aditus laryngis refers to that gas velocity reaches the pipeline smallest cross-sectional place of velocity of sound), thereby can keep under the condition that oxygen pressure is identical with traditional RH equipment for vacuum refining, increase oxygen blast flow, improve oxygen decarburization and blow the efficiency that oxygen by adding aluminum heats up.
2, the shower nozzle of the utility model RH vacuum refining top gun, because making Oxygen Flow, it with hypersonic velocity, sprays into vacuum chamber, therefore it can improve work rifle position, reduce the sticky rifle of the molten steel that splashes, reduce shower nozzle consumption of cooling-water, and annular aditus laryngis can block up rifle than more effective the preventing of the circular aditus laryngis of existing top lance spray nozzle, and the shower nozzle life-span is longer.
3, the shower nozzle of the utility model RH vacuum refining top gun, its convergent-divergent channel, core pipe and syndeton are between the two all simpler, compare with existing top lance spray nozzle, and it is without adopting precision casting, and manufacture difficulty is obviously reduced.
Accompanying drawing explanation
Fig. 1 is the three-dimensional sectional structure schematic diagram of the utility model shower nozzle;
Fig. 2 is for adopting the whole sectional structure schematic diagram of the RH vacuum refining top gun of the utility model shower nozzle.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in the figure, the shower nozzle of the present embodiment RH vacuum refining top gun, comprise convergent-divergent channel 1 and be coaxially arranged on the core pipe 2 in convergent-divergent channel 1, between described convergent-divergent channel 1 and core pipe 2, form that annular that cross section diminishes vertically is gradually shunk pipeline section 3 and cross section becomes large annular expansion pipeline section 4 vertically gradually, the connection section that described annular is shunk pipeline section 3 and annular expansion pipeline section 4 is annular aditus laryngis 5.
In specific embodiment, connection top, the rear end rifle inner tube 6 of convergent-divergent channel 1, the front end of convergent-divergent channel 1 connects top rifle outer tube 7, between top rifle inner tube 6 and top rifle outer tube 6, top rifle marine riser 8 is set, the connection top rifle pipe core 9 of core pipe 2, the interior top rifle duff pipe 10 that arranges of top rifle pipe core 3.
Because the annular contraction pipeline section 3 and annular expansion pipeline section 4 structures that form between convergent-divergent channel 1 and core pipe 2 can make Oxygen Flow spray into vacuum chamber with ultrasonic speed, and annular aditus laryngis can keep under the condition that oxygen pressure is identical with traditional RH equipment for vacuum refining, increase oxygen blast flow, improve oxygen decarburization and blow the efficiency that oxygen by adding aluminum heats up.
And because making Oxygen Flow, it with hypersonic velocity, sprays into vacuum chamber, therefore adopt this shower nozzle can improve work rifle position, reduce the sticky rifle of the molten steel that splashes, reduce shower nozzle consumption of cooling-water, and annular aditus laryngis 5 can prevent stifled rifle than the circular aditus laryngis of existing top lance spray nozzle is more effective, so the shower nozzle life-span is longer.
Further, because convergent-divergent channel 1, core pipe 2 and syndeton are between the two all simpler, compare with existing top lance spray nozzle, it is without adopting precision casting, and manufacture difficulty is obviously reduced.
In the present embodiment, on the inwall of described core pipe 2, be provided with the first sealing-ring annular groove 11 is installed, top rifle pipe core 9 and 2 socket connections of core pipe, and seal by O RunddichtringO; On the rear end external cylindrical surface of described convergent-divergent channel 1, be provided with the second sealing-ring mounting groove 12, the rear end socket connection of top rifle inner tube 6 and convergent-divergent channel 1, and seal by O RunddichtringO; The front end of described convergent-divergent channel 1 is formed with to the annular tube shaped joint 13 of pipe outside and pipe rear end bending, and top rifle outer tube 7 and annular tube shaped joint 13 are welded to connect; Because nozzle structure is simple, and the syndeton between shower nozzle and each transfer lime of top rifle is also simple, only has weld seam one, and all the other are for pegging graft, so the manufacture difficulty of shower nozzle and top rifle integral body all now reduces for prior art greatly.
In the present embodiment, be provided with bearing rib 14 on the outer tube wall of described core pipe 2, the inner tubal wall of described bearing rib 14 and convergent-divergent channel 1 is welded to connect, and manufactures simply, easily realizes.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (5)
1. the shower nozzle of a RH vacuum refining top gun, it is characterized in that: comprise convergent-divergent channel and core pipe, described core pipe is coaxially arranged in convergent-divergent channel, between described convergent-divergent channel and core pipe, form that annular that cross section diminishes vertically is gradually shunk pipeline section and cross section becomes large annular expansion pipeline section vertically gradually, the connection section that described annular is shunk pipeline section and annular expansion pipeline section is annular aditus laryngis.
2. the shower nozzle of RH vacuum refining top gun according to claim 1, is characterized in that: on the inwall of described core pipe, be provided with the first sealing-ring annular groove is installed.
3. the shower nozzle of RH vacuum refining top gun according to claim 1, is characterized in that: on the rear end external cylindrical surface of described convergent-divergent channel, be provided with the second sealing-ring mounting groove.
4. the shower nozzle of RH vacuum refining top gun according to claim 1, is characterized in that: the front end of described convergent-divergent channel is formed with to the annular tube shaped joint of pipe outside and pipe rear end bending.
5. according to the shower nozzle of arbitrary described RH vacuum refining top gun in claim 1-4, it is characterized in that: on the outer tube wall of described core pipe, be provided with bearing rib, the inner tubal wall of described bearing rib and convergent-divergent channel is welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420444496.7U CN203976853U (en) | 2014-08-07 | 2014-08-07 | A kind of shower nozzle of RH vacuum refining top gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420444496.7U CN203976853U (en) | 2014-08-07 | 2014-08-07 | A kind of shower nozzle of RH vacuum refining top gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203976853U true CN203976853U (en) | 2014-12-03 |
Family
ID=51974315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420444496.7U Withdrawn - After Issue CN203976853U (en) | 2014-08-07 | 2014-08-07 | A kind of shower nozzle of RH vacuum refining top gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203976853U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120216A (en) * | 2014-08-07 | 2014-10-29 | 中冶赛迪上海工程技术有限公司 | Shower nozzle of RH vacuum refining top lance |
| CN104775008A (en) * | 2015-05-08 | 2015-07-15 | 中冶赛迪工程技术股份有限公司 | Annular tooth seam supersonic jetting nozzle |
| CN105624358A (en) * | 2016-01-12 | 2016-06-01 | 中冶赛迪上海工程技术有限公司 | Method for producing low-phosphorous steel by single converter and double oxygen lances |
-
2014
- 2014-08-07 CN CN201420444496.7U patent/CN203976853U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120216A (en) * | 2014-08-07 | 2014-10-29 | 中冶赛迪上海工程技术有限公司 | Shower nozzle of RH vacuum refining top lance |
| CN104120216B (en) * | 2014-08-07 | 2016-02-10 | 中冶赛迪上海工程技术有限公司 | A kind of shower nozzle of RH vacuum refining top gun |
| CN104775008A (en) * | 2015-05-08 | 2015-07-15 | 中冶赛迪工程技术股份有限公司 | Annular tooth seam supersonic jetting nozzle |
| CN105624358A (en) * | 2016-01-12 | 2016-06-01 | 中冶赛迪上海工程技术有限公司 | Method for producing low-phosphorous steel by single converter and double oxygen lances |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20160210 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |