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Quick-sealing system for autocontrol oxygen lance

A sealing system and rapid technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the hidden dangers of safety, reliability and air tightness, increase the system operation cost and maintenance cost, and the failure of the main sealing element function, etc. problems, to achieve the effect of improving safety and reliability, convenient installation, and saving investment costs

Active Publication Date: 2012-04-25
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the oxygen lance moves, it is difficult for the main sealing element to overcome an atmospheric pressure and frictional resistance to disengage from the outer wall of the oxygen lance only by its own elastic recovery.
After the system has been running for a period of time, the main sealing element will fail due to high temperature radiation and performance degradation, and it will be more difficult to retract and release, which will bring great hidden dangers to the safety, reliability and airtightness of the system operation. System operating and maintenance costs

Method used

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  • Quick-sealing system for autocontrol oxygen lance
  • Quick-sealing system for autocontrol oxygen lance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] When the self-controlled oxygen lance sealing mechanism provided in this embodiment is in use, it is installed on the pipe seat provided on the top of the vacuum container 7. The self-controlled oxygen lance sealing mechanism is as follows: figure 1 As shown, it includes a sealing seat 8, a positive and negative pressure control unit 6, and a conduit 4 arranged at the front end of the sealing seat 8. In the sealing seat 8, an inner lip type main body is arranged sequentially from the vicinity of the conduit 4 to the rear end of the sealing seat 8. The sealing element 3 and the heat-resistant and heat-insulating sealing stuffing box 2; the positive and negative pressure control unit 6 communicates with the inner lip type main sealing element 3 through an external connecting pipe. When the oxygen lance body 5 moves or stands still, the positive and negative pressure control unit 6 According to the requirements of the working state, the inner lip-type main sealing element 3...

Embodiment 2

[0015] On the basis of the above embodiments, the inner lip type main sealing element 3 and the heat-resistant and heat-insulating sealing stuffing box 2 are arranged in the sealing seat 8 to form an integrated modular unit, mainly for the convenience of replacement and maintenance of the elements, the sealing seat 8 backend ( figure 1 (shown in the lower end) can be equipped with a slag scraper 1 to remove the sticky slag on the outer wall of the oxygen lance; and the heat-resistant and heat-insulating sealing stuffing box 2 can also isolate the heat radiation from damage to the main sealing element in addition to vacuum sealing.

[0016] When the oxygen lance moves up and down, the positive and negative pressure control unit 6 instructs the inner lip-type main sealing element 3 to retract and release quickly, disengages from the outer wall of the oxygen lance, and forms a certain gap between the oxygen lance and the inner lip-type main sealing element 3 , to avoid wear and s...

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Abstract

The invention provides a quick-sealing system for an autocontrol oxygen lance, and the quick-sealing system comprises a sealing seat, a positive and negative pressure control unit and a tapered conduit arranged on the front end of the sealing seat, wherein the sealing seat is successively provided with a sublabrum-type main sealing element and a heatproof heat-insulation sealing stuffing box from the neighbour of the taper-shaped conduit to the rear end of the sealing seat; and the positive and negative pressure control unit is communicated with the sublabrum-type main sealing element via an outer connecting pipe. The device has functions of automatically controlling in a linkage mode and quickly receiving and releasing the main sealing element. The device is an integrated module unit, is convenient to install and has high system air tightness; and the safe reliability of the system can be greatly improved, the service life of the device is prolonged, meanwhile the cost is low, and the investment cost can be greatly saved.

Description

technical field [0001] The invention belongs to an oxygen lance sealing mechanism of a vacuum refining system, in particular to a self-controlled oxygen lance rapid sealing system. Background technique [0002] The oxygen lance sealing device is generally used in the oxygen lance part of the VOD and RH vacuum refining systems. Since this device works in a high temperature and vacuum environment, when the molten steel is processed, when the oxygen lance needs to be moved, if there is sticky slag on the surface of the oxygen lance Or the occurrence of accidents such as the failure of the main sealing element to recover quickly will cause serious accidents such as equipment shutdown and personnel injury due to damage to the main sealing element, so the oxygen lance sealing device is very important. At the same time, the system also requires that when the oxygen lance is moving or stationary, the main sealing element can be quickly retracted and released or expanded to hold the ...

Claims

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Application Information

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IPC IPC(8): F16J15/32F16J15/46C21C7/10C21C7/072F16J15/3212
Inventor 计玉珍佟冰郑赟周榕平
Owner CHINA NAT HEAVY MACHINERY RES INSTCO