CN207062318U - Sealing device in electric arc furnaces feed opening - Google Patents
Sealing device in electric arc furnaces feed opening Download PDFInfo
- Publication number
- CN207062318U CN207062318U CN201720891573.7U CN201720891573U CN207062318U CN 207062318 U CN207062318 U CN 207062318U CN 201720891573 U CN201720891573 U CN 201720891573U CN 207062318 U CN207062318 U CN 207062318U
- Authority
- CN
- China
- Prior art keywords
- feed opening
- gas
- electric arc
- arc furnaces
- sealing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
A kind of sealing device in electric arc furnaces feed opening is the utility model is related to, the device includes the air inlet pipe installed in tremie pipe top side, and the nozzle being connected installed in feed pipe inside and one end with air inlet pipe.The nozzle can make sealing medium substitution nitrogen with compressed gas, cost can be effectively reduced, caused impulse force solves feed opening dross phenomenon to gas downwards simultaneously, reduce the working strength of operating personnel, so as to improve the speed of smelting, therefore, this kind of sealing device can produce ideal sealing effectiveness at electric arc furnaces feed opening.
Description
Technical field
It the utility model is related to a kind of sealing device in electric arc furnaces feed opening.
Background technology
It is increasing to the demand of steel alloy, carbon steel etc. with the continuous development of China's industry, and in alloy smelting
In the equipment of steel etc., the application of electric arc furnaces is more and more extensive, with the development of power industry, under the cost of electric-arc furnace steelmaking is continuous
Drop, present electric-arc furnace steelmaking are used not only for producing steel alloy, and are largely used for producing ordinary carbon steel, and its yield is in main work
Proportion in industry country steel total output constantly rises, but the sealing property of existing electric arc furnaces is poor, existing electric arc furnaces it is close
Seal apparatus is connect by orifice plate and nitrogen pipeline and formed, and is fixed on inside feed opening, and nitrogen is mainly sprayed by pipeline to be entered in tremie pipe
Portion, its sealing principle is that nitrogen is full of in feed opening, and possesses certain pressure, to hinder the outer of inner flue gas of the stove and flame
Overflow, but nitrogen is directly sprayed by heavy caliber mouth because the nitrogen of design seals, and certain pressure is formed in material feeding hole, but enter blanking
Intraoral nitrogen is greatly overflowed by material feeding line upper portion, therefore causes nitrogen consumption excessive, causes the waste of medium,
And sealing effectiveness is bad, flame often overflows, and scaling loss equipment, causes fire incident, because caused air-flow is on feed opening
Portion sprays, and causes powder excessive, causes the pollution of environment, and caused dust influences dust removing effects, regarding to the issue above
Had to the improved technology of electric arc furnaces blanking mouth sealing device, but structure is all more complicated, cost is higher, therefore, existing electricity
Can the sealing device of arc stove produce ideal sealing effectiveness and need further to study and inquire into.
The content of the invention
The purpose of this utility model is to provide one kind makes gas generation downward pressure using nozzle is installed inside tremie pipe
Mode one kind for solving the problems such as poor sealing performance, sealing gas consumption big and flour dust overflow pollution environment be arranged on electricity
Sealing device in arc stove feed opening.
The sealing device being arranged in electric arc furnaces feed opening that the utility model is proposed includes being arranged on tremie pipe top
The air inlet pipe of side, and the nozzle being connected installed in feed pipe inside and one end with air inlet pipe.
The gas that the nozzle includes shell body and the top being arranged in shell body and internal diameter from top to bottom tapers into
Contraction chamber, and be arranged on the cavum laryngis of the bottom of the contraction of gas chamber, the bottom in the shell body be provided with internal diameter by
The gas diffusion chamber gradually increased under up to, and the gas diffusion chamber is connected by cavum laryngis with contraction of gas chamber.
The sealing device being arranged in electric arc furnaces feed opening that the utility model is proposed includes being arranged on tremie pipe top
The air inlet pipe of side, and the nozzle being connected installed in feed pipe inside and one end with air inlet pipe, can when electric arc furnace smelting steel
Gas is passed through into air inlet pipe, and is sprayed downwards by nozzle, it is gentle that described nozzle is respectively arranged with contraction of gas chamber, cavum laryngis
Body diffusion chamber, when gas enters nozzle by air inlet pipe, first by contraction of gas chamber, the rule moved according to fluid in pipe
Rule, i.e. the small flow velocity in section is big, therefore when compressed air reaches cavum laryngis, flow velocity is maximum, when entering gas diffusion chamber, i.e. section
Become big again, according to the principle of Lavalle, now gas flow rate will not reduce, and be to continue with increasing, so as to ensure the nozzle
Lower section will produce downward impulse force always, so as to suppress the flue gas in stove, flame is scurried out upwards, can effectively avoid ring
Border is polluted to be burned out with equipment such as tremie pipes, and can make sealing medium substitution nitrogen with compressed gas using the nozzle of this structure
Gas, cost can be effectively reduced, while caused impulse force solves feed opening dross phenomenon to gas downwards, reduces operating personnel
Working strength, so as to improve the speed of smelting, therefore, this kind of sealing device can produce non-convention at electric arc furnaces feed opening
The sealing effectiveness thought.
Brief description of the drawings：
Accompanying drawing 1 is that the sealing device being arranged in electric arc furnaces feed opening that the utility model is proposed is arranged in tremie pipe
Structural representation；
Accompanying drawing 2 is the cross-sectional view of nozzle in accompanying drawing 1.
Embodiment:
Referring to Fig. 1 and Fig. 2, what the two accompanying drawings provided that the utility model proposed is arranged on close in electric arc furnaces feed opening
The surface structure schematic diagram of one embodiment of seal apparatus.The device includes the air inlet pipe 1 installed in the top side of tremie pipe 3,
With the nozzle 2 for being mounted vertically in the inside of feed pipe 1 and one end and being connected with air inlet pipe 1.
The nozzle 2 includes what shell body 21 from top to bottom tapered into the top and internal diameter being arranged in shell body 21
Contraction of gas chamber 22, and the cavum laryngis 23 of the bottom of the contraction of gas chamber 22 is arranged on, the bottom in the shell body 21
The gas diffusion chamber 24 that internal diameter from top to bottom gradually increases is provided with, and the gas diffusion chamber 24 is received by cavum laryngis 23 and gas
Contracting chamber 21 is connected, and the nozzle operation principle of this kind of structure is, when the gas for sealing enters contraction of gas from air inlet pipe 1
During chamber 22, because the internal diameter of contraction of gas chamber 22 tapers into, i.e., area of section is gradually reduced so that gas passes through contraction of gas
Flow velocity during chamber 22 gradually increases, and enters gas diffusion chamber 24 by cavum laryngis 23 so that the flow velocity of gas continues to increase, simultaneously
The gas for the high flow rate that gas diffusion chamber 24 sprays downwards drives outside air, so that gas is below gas diffusion chamber 24
Formation continues downward pressure, can effectively suppress the flue gas in electric arc furnaces and flame is scurried out upwards, and is tied using this kind
Compressed air can be used to substitute the existing nitrogen for being commonly used to sealing for the nozzle of structure.
The sealing device being arranged in electric arc furnaces feed opening that the utility model is proposed can be effectively under electric arc furnaces
Material mouth is internally formed the sealant of strength, avoids the flue gas in electric arc furnaces and flame from scurrying out upwards, both can guarantee that surrounding enviroment
Cleaning, and can, which reduces flame and scurried out, burns the situation of the equipment such as tremie pipe, and compressed air can be used to substitute nitrogen, Neng Gouyou
Effect reduces production cost and the maintenance cost of equipment, with the more and more extensive use of electric-arc furnace steelmaking, this kind sealing dress
Technique effect caused by putting will highly significant.
Claims (2)
1. the sealing device in electric arc furnaces feed opening, it is characterised in that：The device includes being arranged on tremie pipe top one
The air inlet pipe of side, and the nozzle being connected installed in feed pipe inside and one end with air inlet pipe.
2. sealing device according to claim 1, it is characterised in that：The nozzle includes shell body and is arranged on shell body
The contraction of gas chamber that interior top and internal diameter from top to bottom tapers into, and be arranged on the bottom of the contraction of gas chamber
Cavum laryngis, the bottom in the shell body are provided with the gas diffusion chamber that internal diameter from top to bottom gradually increases, and the gas diffusion
Chamber is connected by cavum laryngis with contraction of gas chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720891573.7U CN207062318U (en) | 2017-07-21 | 2017-07-21 | Sealing device in electric arc furnaces feed opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720891573.7U CN207062318U (en) | 2017-07-21 | 2017-07-21 | Sealing device in electric arc furnaces feed opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207062318U true CN207062318U (en) | 2018-03-02 |
Family
ID=61511487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720891573.7U Expired - Fee Related CN207062318U (en) | 2017-07-21 | 2017-07-21 | Sealing device in electric arc furnaces feed opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207062318U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460273A (en) * | 2017-07-21 | 2017-12-12 | 本钢板材股份有限公司 | Sealing device in electric arc furnaces feed opening |
-
2017
- 2017-07-21 CN CN201720891573.7U patent/CN207062318U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460273A (en) * | 2017-07-21 | 2017-12-12 | 本钢板材股份有限公司 | Sealing device in electric arc furnaces feed opening |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207062318U (en) | Sealing device in electric arc furnaces feed opening | |
| CN102605136B (en) | Soft sealing device for converter mouth and fume hood | |
| CN202012648U (en) | Low-pressure control release valve | |
| CN205635677U (en) | Converter armor formula oxygen rifle | |
| CN204661752U (en) | A kind of oxygen-enriched bottom-blowing stove oxygen rifle | |
| CN201653117U (en) | Furnace roof sealing device for electro-fused magnesia furnace | |
| CN104226973A (en) | Continuous casting protection casting device of high-quality steel | |
| CN107460273A (en) | Sealing device in electric arc furnaces feed opening | |
| CN207091486U (en) | Flash Smelting Furnace flue | |
| CN202543247U (en) | Improved converter charging port device | |
| CN203190410U (en) | Natural gas spray gun for smelting furnace | |
| CN202927343U (en) | Novel wear-resistant elbow | |
| CN202380017U (en) | Secondary dust removal system for converters | |
| CN201190165Y (en) | Taphole of blowing-on of blast furnace with wind pressure tube | |
| CN202492534U (en) | Flexible sealing device for converter mouth and gas hood | |
| CN208042782U (en) | A kind of open type cathode baking furnace furnace bottom | |
| CN206736331U (en) | A kind of cooled Smelting magnesium erects tank deslagging mouth structure | |
| CN202158749U (en) | Decomposing furnace throat of rotary cement kiln rear preheating system | |
| CN206522783U (en) | A kind of burner assembly of utilization Coanda effect | |
| CN206828559U (en) | A kind of electric furnace carbon oxygen lance | |
| CN202692118U (en) | Furnace door sealed through manual pull | |
| CN207159264U (en) | A kind of specific purpose tool for clearing up nitrogen seal ring air holes | |
| CN205936697U (en) | Fill sand silo and make thick liquid nozzle | |
| CN102828003B (en) | Molten steel vacuum refining top rifle | |
| CN205398698U (en) | Fire refining's high -efficient still original mounting of environmental protection is smelted to copper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 Termination date: 20180721 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |