CN201250250Y - Oxygen lance channel sealing device - Google Patents
Oxygen lance channel sealing device Download PDFInfo
- Publication number
- CN201250250Y CN201250250Y CNU2008201519491U CN200820151949U CN201250250Y CN 201250250 Y CN201250250 Y CN 201250250Y CN U2008201519491 U CNU2008201519491 U CN U2008201519491U CN 200820151949 U CN200820151949 U CN 200820151949U CN 201250250 Y CN201250250 Y CN 201250250Y
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- sealing
- ring
- sealing ring
- oxygen rifle
- gland
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Abstract
The utility model discloses an oxygen lance channel sealing device, which comprises a locating seat, a sealing ring, a support ring and a gland, wherein the sealing ring is arranged on the locating seat, the outer wall of the sealing ring is provided with an opening, and the inner portion thereof is provided with a gasbag, the upper end and the lower end of the inner wall of the sealing ring are provided with chamfering hobs, the support ring is arranged in the gasbag, the gland is arranged on the upper end of the sealing ring, and a gas storage hollow cavity is arranged between the inner wall of the support ring and the inner wall on one side of the gasbag. The gas storage hollow cavity can lower pressure forced when the gasbag expands, and is beneficial for increasing the deformation amount of the gasbag and reducing resistance forced when in retracting, thereby avoiding the aging of the sealing ring, and improving the service span of the sealing ring. A plurality channels of sealing can be played through arranging a plurality of ring-shaped grooves, and the sealing effect is improved. In addition, the concentration of stress on the sealing ring is reduced through increasing the chamfering hobs of the sealing ring, and the sealing ring is prevented from aging and cracking.
Description
Technical field
The utility model relates to the packing technique of refining oxygen rifle passage, more particularly, relates to a kind of oxygen rifle channel seal device, and the sealing device can avoid sealing-ring aging impaired, improves its work-ing life.
Background technology
At present, the concise equipment of the vacuum outgas of steel-making enterprise (RH) has extensively adopted top rifle technology, by the time that vacuum decarburization is accelerated in top rifle oxygen blast, shortens the concise cycle.See also shown in Figure 1ly, oxygen rifle passage 1 is positioned on the hot bending pipe 3 of vacuum tank 2, and oxygen rifle 4 is by inserting oxygen rifle passage 1 and entering to vacuum tank 2.Because vacuum tank 2 and hot bending pipe 3 are under the vacuum state when smelting, very high to seal request, in case occur leaking, vacuum tightness influence to vacuum outgas is bigger, therefore, usually adopt tightness system to sealing in the oxygen rifle passage 1, please in conjunction with Fig. 2, shown in Figure 3, sealing device 10 generally comprises positioning seat 11, material is the sealing-ring 12 of rubber, supporting cup 13 and gland 14, positioning seat 11 are located on the port of oxygen rifle passage 1, and sealing-ring 12 is located on the positioning seat 11, and be positioned at oxygen rifle passage 1, the outer wall upper shed of sealing-ring 12, its inside is provided with air bag, and the inwall of sealing-ring 12 is equipped with chamfering 121 in two ends up and down; Supporting cup 13 is suitable with air bag, and is located in the air bag cavity, plays a supporting role, and also is provided with air inlet port 131 in the supporting cup 13 and is connected with air bag; Gland 14 is located at sealing-ring 12 tops and sealing-ring 12 is fixed.After the oxygen rifle inserted vacuum tank 2, to the air bag inner inflatable, air bag expanded under gas pressure by air inlet port 131, makes sealing-ring 12 inwalls hold the oxygen rifle tightly, thereby realized sealing.But in actual use, because the inwall of air bag almost is close to supporting cup 13 1 ends, and the outer wall of sealing-ring 12 is close to positioning seat 11, so cause the resistance of airbag inflation and retracting motion excessive, operating pressure is too high, thereby has quickened the aging of rubber, and can be because of air bag retraction not yet in effect when oxygen rifle 4 inserts, and wearing and tearing sealing-ring 12 inwalls, thereby shortened work-ing life of sealing-ring 12; And the inwall chamfering 121 of sealing-ring 12 is less than normal, has only 2mm, can cause stress herein too concentrated, also is prone to aging cracking, and then leaks, and influences vacuum tightness; In addition, the inwall of sealing circle 12 is the plane, can only form individual layer sealing-ring 12, and oxygen rifle 4 surfaces are bonded with foreign matters such as cold steel through regular meeting, thus be difficult to guarantee the effective seal area, thus also make the sealing effectiveness instability.
The utility model content
Be obstructed excessive at the above-mentioned sealing-ring harmomegathus that exists in the prior art, easily aging impaired, work-ing life is short and the shortcoming of sealing effectiveness difference, the purpose of this utility model provides a kind of oxygen rifle channel seal device, and the sealing device can reduce the sealing-ring pressure, improves its work-ing life.
For achieving the above object, the utility model adopts following technical scheme:
This oxygen rifle channel seal device comprises positioning seat, sealing-ring, supporting cup and gland, and sealing-ring is located on the positioning seat, the opening of external wall of sealing-ring, and inside is provided with air bag, and the inwall upper and lower end of sealing-ring is provided with chamfering; Supporting cup is located in the air bag; Gland is located at the sealing-ring upper end, is provided with gas storage cavity between the inwall of described supporting cup and the air bag one side inwall.
Have several and the co-axial annular recesses of sealing-ring on the inwall of described sealing-ring.
Described sealing-ring design is two not isometrical section, and the external diameter of its segmentum laterale is greater than the external diameter of its medial segment, and the two ends up and down of segmentum laterale offset fixing with gland and positioning seat respectively.
The width of described gas storage cavity is 10～20mm.
Described chamfering is greater than 5mm.
In technique scheme, oxygen rifle channel seal device of the present utility model comprises positioning seat, sealing-ring, supporting cup and gland, and sealing-ring is located on the positioning seat, the opening of external wall of sealing-ring, and inside is provided with air bag, and the inwall upper and lower end of sealing-ring is provided with chamfering; Supporting cup is located in the air bag; Gland is located at the sealing-ring upper end, is provided with gas storage cavity between the inwall of supporting cup and the air bag one side inwall.Suffered pressure when this gas storage cavity can reduce airbag inflation, and the resistance that is subjected to when helping to increase the deflection of air bag and reducing retraction, thus the aging and impaired of sealing-ring avoided, improve its work-ing life; Can play multiple-sealedly by several annular recessess are set, improve sealing effectiveness; In addition,, thereby reduced concentrating of this place's stress, prevented that this place from aging, crack performance taking place by the chamfering of increase sealing-ring.
Description of drawings
Fig. 1 is the oxygen blown structural representation of vacuum tank top rifle of prior art;
Fig. 2 is the structure cross-sectional schematic of the oxygen rifle channel seal device of prior art;
Fig. 3 is the A portion enlarged diagram among Fig. 2;
Fig. 4 is the structure cross-sectional schematic of oxygen rifle channel seal device of the present utility model;
Fig. 5 is the B portion enlarged diagram among Fig. 4.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
See also Fig. 4, shown in Figure 5, oxygen rifle channel seal device 20 of the present utility model is basic identical with prior art, equally also comprise positioning seat 21, sealing-ring 22, supporting cup 23 and gland 24, positioning seat 21 is connected on the port of oxygen rifle passage 1, the material of sealing-ring 22 is silicon rubber or viton, and is located on the positioning seat 21 opening of external wall of sealing-ring 22, inside is provided with air bag, and the inwall upper and lower end of sealing-ring 22 is respectively equipped with chamfering 221; Supporting cup 23 medial extremitys stretch into opening, and are located in the air bag, play the effect of support air bag, and supporting cup 23 1 side inside also have air inlet port 231, and air inlet port 231 is connected with air bag; Gland is located at sealing-ring 22 upper ends, and sealing-ring 22 is fixed.Difference is, leaves a gas storage cavity 222 between the inwall of this supporting cup 23 and the air bag one side inwall, and the radial width of this gas storage cavity 222 is 10～20mm.Need to prove that at this this gas storage cavity 222 can be by shortening the radial width of supporting cup 23, and increase the radial width of air bag and get.The resistance that is subjected to when pressure and retraction when this gas storage cavity 222 helps to reduce sealing-ring 22 and expands, and can increase the deflection of sealing-ring 22, thus effectively avoided pressurized too high and cause rapid ageing, prolonged work-ing life.And can prevent to bounce back not in place and inordinate wear.And on the inwall of sealing-ring 22, having several and sealing-ring 22 co-axial annular recessess 223, the rectangular structure of the radial section of this groove 223, its quantity are at least two.When band oxygen rifle inserted, these sealing-ring 22 inwalls that have annular recesses 223 can form multiple-sealed on oxygen rifle surface, thereby improve leakage efficiency and sealing reliability greatly.And, sealing circle 22 also designs and is two not isometrical section, the external diameter of its segmentum laterale is greater than the external diameter of its medial segment, thereby on radial section, form step-like, and press down by gland 24, the two ends up and down of segmentum laterale are pressed between gland 24 and the positioning seat 21, and offset fixing with gland 24 and positioning seat 21 respectively, move after can making the location of sealing-ring 22 like this, thereby further reduce the resistance that sealing-ring 22 expands and bounces back, and then more help avoiding the bump of oxygen rifle, prolong the work-ing life of sealing-ring 22.In addition, increase the chamfering 221 of sealing circle 22, make it, can reduce concentrating of this place's stress like this, prevent that this place from aging, crack performance taking place greater than 5mm.
Sealing-ring 12 average every smelting three stoves of tightness system 10 originally promptly need be changed once, if calculate to smelt 25 furnace gauges every day, need at least every day to change eight times, and time-consuming, effort is also taken material; And after having adopted tightness system 20 of the present utility model, improve greatly the work-ing life of sealing-ring 22, average every smelting 75 stoves are just changed once, have totally improved 24 times, and effect is very remarkable.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (5)
1. oxygen rifle channel seal device, the sealing device comprises positioning seat, sealing-ring, supporting cup and gland, sealing-ring is located on the positioning seat, the opening of external wall of sealing-ring, inside is provided with air bag, and the inwall upper and lower end of sealing-ring is provided with chamfering; Supporting cup is located in the air bag; Gland is located at the sealing-ring upper end, it is characterized in that:
Be provided with gas storage cavity between the inwall of described supporting cup and the air bag one side inwall.
2. oxygen rifle channel seal device as claimed in claim 1 is characterized in that:
Have several and the co-axial annular recesses of sealing-ring on the inwall of described sealing-ring.
3. oxygen rifle channel seal device as claimed in claim 1 is characterized in that:
Described sealing-ring design is two not isometrical section, and the external diameter of its segmentum laterale is greater than the external diameter of its medial segment, and the two ends up and down of segmentum laterale offset fixing with gland and positioning seat respectively.
4. oxygen rifle channel seal device as claimed in claim 1 is characterized in that:
The width of described gas storage cavity is 10～20mm.
5. oxygen rifle channel seal device as claimed in claim 1 is characterized in that:
Described chamfering is greater than 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201519491U CN201250250Y (en) | 2008-08-14 | 2008-08-14 | Oxygen lance channel sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201519491U CN201250250Y (en) | 2008-08-14 | 2008-08-14 | Oxygen lance channel sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250250Y true CN201250250Y (en) | 2009-06-03 |
Family
ID=40745922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201519491U Expired - Fee Related CN201250250Y (en) | 2008-08-14 | 2008-08-14 | Oxygen lance channel sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201250250Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022917A (en) * | 2011-01-04 | 2011-04-20 | 马鞍山钢铁股份有限公司 | Top gun applied to steel production |
| CN102425671A (en) * | 2011-11-04 | 2012-04-25 | 中国重型机械研究院有限公司 | Quick-sealing system for autocontrol oxygen lance |
| CN102732684A (en) * | 2012-06-12 | 2012-10-17 | 河北钢铁股份有限公司邯郸分公司 | On-line rapid RH sealing airbag replacing method |
| CN113669258A (en) * | 2021-10-09 | 2021-11-19 | 杭州金韩压缩机有限公司 | Condensing device of vortex air compressor |
-
2008
- 2008-08-14 CN CNU2008201519491U patent/CN201250250Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022917A (en) * | 2011-01-04 | 2011-04-20 | 马鞍山钢铁股份有限公司 | Top gun applied to steel production |
| CN102425671A (en) * | 2011-11-04 | 2012-04-25 | 中国重型机械研究院有限公司 | Quick-sealing system for autocontrol oxygen lance |
| CN102425671B (en) * | 2011-11-04 | 2016-02-03 | 中国重型机械研究院有限公司 | Quick-sealing system for autocontrol oxygen lance |
| CN102732684A (en) * | 2012-06-12 | 2012-10-17 | 河北钢铁股份有限公司邯郸分公司 | On-line rapid RH sealing airbag replacing method |
| CN102732684B (en) * | 2012-06-12 | 2014-05-28 | 河北钢铁股份有限公司邯郸分公司 | On-line rapid RH sealing airbag replacing method |
| CN113669258A (en) * | 2021-10-09 | 2021-11-19 | 杭州金韩压缩机有限公司 | Condensing device of vortex air compressor |
| CN113669258B (en) * | 2021-10-09 | 2023-03-07 | 杭州金韩压缩机有限公司 | Condensing device of vortex air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20160814 |