CN210528963U - Quick connecting device of converter oxygen lance - Google Patents
Quick connecting device of converter oxygen lance Download PDFInfo
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- CN210528963U CN210528963U CN201921405953.0U CN201921405953U CN210528963U CN 210528963 U CN210528963 U CN 210528963U CN 201921405953 U CN201921405953 U CN 201921405953U CN 210528963 U CN210528963 U CN 210528963U
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Abstract
The utility model belongs to the technical field of converter equipment, and discloses a converter oxygen lance quick connecting device, which comprises an upper connecting device and a lower connecting device which are connected with an oxygen lance fixing trolley; the upper connecting device comprises a fixed flange and an upper connecting body arranged at the axle center of the fixed flange; a plurality of upper clamping grooves are uniformly distributed on the peripheral surface of the fixed flange along the axial direction; a medium hole is formed at the axis of the upper connecting body; the lower end of the upper connecting body is an inverted cone-shaped cylinder used for connecting the lower connecting device; the lower connecting device comprises a lower connecting body welded at the top end of the oxygen lance medium connecting short pipe and a movable flange sleeved outside the oxygen lance medium connecting short pipe; an inverted cone-shaped connecting hole matched with the inverted cone-shaped cylinder is formed in the axis of the lower connecting body; the inverted cone-shaped connecting hole is communicated with the oxygen lance medium connecting short pipe; a lower clamping groove is formed in the circumferential direction of the movable flange corresponding to the upper clamping groove; and a slipknot bolt is fixed below the slipknot flange corresponding to the lower clamping groove. The utility model has the advantages of simple and reasonable structure, the simple operation, improvement oxygen rifle connection efficiency that can be very big.
Description
Technical Field
The utility model belongs to the technical field of the converter is equipped, especially, relate to a converter oxygen rifle quick connecting device.
Background
In the process of converter steelmaking operation, an oxygen lance needs to be inserted from the top of the converter and is used for injecting oxygen into the converter, so that the oxygen lance of the converter is one of the most core equipment of the converter and plays a role in energy conversion.
At present, most of converter steelmaking is carried out, and oxygen lances need to be frequently replaced and repaired due to slagging and the like; the connection form of the oxygen lance and the compensating joint on the oxygen lance trolley fixing frame is flange connection, so that the butt joint installation of the oxygen lance is realized, namely the multi-point contraposition installation of an oxygen lance fixing seat, water inlet, water return, an oxygen pipeline flange and the like is realized; the oxygen lance is provided with a plurality of installation positions in an aligning way, and the oxygen lance needs to be butted successfully at one time, so that the phenomena of air leakage and water leakage are prevented, the aligning precision requirement is high, and the aligning and connecting process is complicated. Taking a common converter oxygen lance as an example, the oxygen lance comprises 3 sets of flanges, and the flanges are provided with 36 bolts in total; the statistical average time for changing gun and adjusting gun is about 1.5-2 hours. Under normal production conditions, 120-160 furnaces are regulated, and oxygen lances are replaced for about 2-3 days, more oxygen lances need to be replaced within a hundred furnaces, and about 50% of the oxygen lances need to be replaced after being discharged and slag is removed in the smelting process and then are charged; in addition, once the conditions of large-scale molten iron quality fluctuation, too slow operation adjustment and the like are met, the gun age is lower, and the condition that the gun is on-line after off-line slag removal is more frequent. Therefore, improvements are needed in the current form of lance attachment.
SUMMERY OF THE UTILITY MODEL
To the defects of the prior art, the utility model provides a converter oxygen lance quick connecting device which has simple and reasonable structure, convenient operation and can greatly improve the oxygen lance connecting efficiency. In order to achieve the above object, the utility model discloses the concrete technical scheme who adopts is:
a converter oxygen lance quick connecting device comprises an upper connecting device connected with an oxygen lance fixing trolley and a lower connecting device fixed with an oxygen lance medium junction pipe; the upper connecting device comprises a fixed flange and an upper connecting body arranged at the axle center of the fixed flange; a plurality of upper clamping grooves are uniformly distributed on the outer peripheral surface of the fixed flange along the axial direction; a medium hole is formed in the axis of the upper connecting body; the lower end of the upper connecting body is an inverted cone-shaped cylinder used for connecting the lower connecting device;
the lower connecting device comprises a lower connecting body welded at the top end of the oxygen lance medium connecting short pipe and a movable flange sleeved outside the oxygen lance medium connecting short pipe; an inverted cone-shaped connecting hole matched with the inverted cone-shaped cylinder is formed in the axis of the lower connecting body; the inverted cone-shaped connecting hole is communicated with the oxygen lance medium connecting short pipe;
a lower clamping groove is formed in the circumferential direction of the movable flange corresponding to the upper clamping groove; a connecting block for fixing a slipknot bolt is arranged below the slipknot flange and corresponds to the lower clamping groove; when the oxygen lance is connected, the slipknot bolt rotates to be clamped with the upper clamping groove and the lower clamping groove and is fixed by the nut.
Further, the lower connecting body is of a T-shaped cylindrical structure with a large upper part and a small lower part, a stepped hole is further formed in the inner side of the movable flange, the stepped hole moves upwards to a certain position, and the inner wall of the stepped hole can be in contact with the T-shaped outer wall surface of the lower connecting body.
Furthermore, the connecting blocks are symmetrically arranged on two sides of the lower clamping groove; the connecting block is provided with a bolt hole; the two connecting blocks are connected with the slipknot bolt through a matched pin shaft and a check ring, and the slipknot bolt is provided with a cotter pin for preventing rotation.
Further, an upper annular hard sealing ring and a lower annular hard sealing ring are horizontally fixed on the periphery of the inverted conical cylinder; the inner wall of the inverted conical connecting hole and the hard sealing ring form hard sealing.
Further, an annular groove is formed in the upper end face of the lower connecting body; and a sealing rubber ring which forms a seal with the lower end face of the fixed flange is arranged in the annular groove.
Furthermore, the upper end surface of the movable flange is lower than the upper end surface of the lower connecting body.
The utility model discloses an advantage and positive effect do:
the connecting device of the utility model has simple and reasonable structure and convenient operation, and can greatly improve the connecting efficiency of the oxygen lance, thereby improving the production speed; specifically, the original dozens of bolts are changed into 4 slipknot bolts; the original multiple sets of flanges are simplified into two sets of fixed flanges and movable flanges, so that the connection strength is greatly reduced; in addition, the upper connector and the lower connector are matched with the hardened sealing ring in a tapered manner to form hard sealing; form upper and lower connecting device's soft sealing through setting up sealed rubber ring, promptly the utility model discloses can guarantee the production needs on the leakproofness.
Drawings
FIG. 1 is a front sectional view of a converter oxygen lance quick connection device in a preferred embodiment of the present invention;
FIG. 2 is a front cross-sectional view of an upper attachment device in a preferred embodiment of the present invention;
FIG. 3 is a bottom view of FIG. 2;
FIG. 4 is a front cross-sectional view of a live flange in a preferred embodiment of the invention;
fig. 5 is a bottom view of fig. 4.
In the figure: 1. a fixed flange; 11. an upper clamping groove; 2. an upper connector; 21. a media aperture; 22. a reverse tapered cylinder; 23. a hard seal ring; 3. the oxygen lance medium connecting short pipe; 4. a lower connector; 41. an inverted conical connecting hole; 42. a transition hole; 43. sealing the rubber ring; 5. a movable flange; 51. a stepped hole; 52. a lower clamping groove; 53. connecting blocks; 54. a keyhole; 6. a slipknot bolt; 7. a cotter pin; 8. and a retainer ring.
Detailed Description
In order to further understand the contents, features and functions of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 4, the utility model discloses a converter oxygen lance quick connecting device, the connecting position of the oxygen lance consists of a spray head, a lance body and a lance tail, the lance body consists of three layers of seamless steel pipes, the inner pipe is a gas path channel, the circular seam between the middle pipe and the outer pipe is a cooling water channel, and the lance tail consists of a lifting ring and an oxygen lance medium pipeline flange connected with an oxygen lance medium connecting short pipe;
the connecting device of the utility model comprises an upper connecting device connected with the oxygen lance fixing trolley and a lower connecting device fixed with the oxygen lance medium junction pipe 3;
the upper connecting device comprises a fixed flange 1 and an upper connecting body 2 arranged at the axle center of the fixed flange 1; the fixed flange 1 and the upper connecting body 2 are connected into a whole through welding; a medium hole 21 is formed in the axis of the upper connecting body 2 according to the corresponding medium flow, pressure and flow speed of the oxygen lance;
preferably, the upper end surface of the upper connecting body 2 is higher than the upper end surface of the fixing flange 1; the lower end surface of the upper connector 2 is lower than the lower end surface of the fixed flange 1; the lower end of the upper connector 2 is an inverted cone-shaped cylinder 22 for connecting a lower connector, and an upper annular hard sealing ring and a lower annular hard sealing ring 23 are horizontally fixed on the periphery of the inverted cone-shaped cylinder 22; the hard seal ring 23 requires heat treatment to improve strength;
four U-shaped upper clamping grooves 11 are uniformly distributed on the outer peripheral surface of the fixed flange 1 along the axial direction;
the lower connecting device comprises a lower connecting body 4 welded at the top end of the oxygen lance medium connecting short pipe 3 and a movable flange 5 sleeved outside the oxygen lance medium connecting short pipe 3; preferably, the axis of the lower connecting body 4 is provided with an inverted cone-shaped connecting hole 41 matched with the inverted cone-shaped cylinder 22; the inverted cone-shaped connecting hole 41 is communicated with the oxygen lance medium connecting short pipe 3 through a transition hole 42; in addition, the inner wall of the inverted cone-shaped connecting hole 41 is smooth and forms a hard seal for preventing water leakage and air leakage with the hard sealing ring 23; the mode of conical fit and hard sealing can effectively ensure the sealing performance of the oxygen lance after connection.
A U-shaped lower clamping groove 52 is arranged at the position, corresponding to the upper clamping groove 11, of the periphery of the movable flange 5; connecting blocks 53 symmetrically arranged at two sides of the lower clamping groove 52 are arranged below the movable flange 5; a bolt hole 54 is formed in the connecting block 53; the two connecting blocks 53 are connected with the slipknot bolt 6 through the matched pin shaft and the check ring 8, and the slipknot bolt 6 is provided with a cotter pin 7 for rotation prevention.
The bolt body of the slipknot bolt 6 is clamped with the upper clamping groove 11 and the lower clamping groove 52; namely, after the slipknot bolts are fixed with the connecting block 53, once the oxygen lance connection is carried out, the four slipknot bolts 6 are rotated to be clamped with the upper clamping groove 11 and the lower clamping groove 52, and nuts for screwing are arranged above the upper clamping groove 11;
preferably, an annular groove is formed in the upper end face of the lower connecting body 4; be equipped with in the annular groove with mounting flange 1 down the terminal surface form the sealed rubber ring 43 of face seal, further ensured the utility model discloses well connecting device's leakproofness.
Preferably, the lower connecting body 4 is a T-shaped cylindrical structure with a large top and a small bottom, and the inner side of the movable flange 5 is further provided with a stepped hole 51, so that when the loose joint bolt 6 is installed, the stepped hole 51 moves upwards to a certain position, the inner wall of the stepped hole can be contacted with the outer wall surface of the lower connecting body 4, and the stepped hole 51 can be matched to play a role in radial positioning during installation; in addition, the upper end surface of the movable flange is lower than the upper end surface of the lower connecting body 4 by about 1mm, so that the movable flange can be prevented from contacting the fixed flange 1, and the sealing between the fixed flange 1 and the lower connecting body 4 is not affected.
The utility model has the advantages of simple and reasonable structure, the simple operation, improvement oxygen rifle connection efficiency that can be very big to production speed has been improved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (6)
1. A converter oxygen lance quick connecting device comprises an upper connecting device connected with an oxygen lance fixing trolley and a lower connecting device fixed with an oxygen lance medium junction pipe; the method is characterized in that:
the upper connecting device comprises a fixed flange and an upper connecting body arranged at the axle center of the fixed flange; a plurality of upper clamping grooves are uniformly distributed on the outer peripheral surface of the fixed flange along the axial direction; a medium hole is formed in the axis of the upper connecting body; the lower end of the upper connecting body is an inverted cone-shaped cylinder used for connecting the lower connecting device;
the lower connecting device comprises a lower connecting body welded at the top end of the oxygen lance medium connecting short pipe and a movable flange sleeved outside the oxygen lance medium connecting short pipe; an inverted cone-shaped connecting hole matched with the inverted cone-shaped cylinder is formed in the axis of the lower connecting body; the inverted cone-shaped connecting hole is communicated with the oxygen lance medium connecting short pipe;
a lower clamping groove is formed in the circumferential direction of the movable flange corresponding to the upper clamping groove; a connecting block for fixing a slipknot bolt is arranged below the slipknot flange and corresponds to the lower clamping groove; when the oxygen lance is connected, the slipknot bolt rotates to be clamped with the upper clamping groove and the lower clamping groove and is fixed by the nut.
2. The quick connecting device for the oxygen lance of the converter as claimed in claim 1, characterized in that: the lower connecting body is of a T-shaped cylindrical structure with a large upper part and a small lower part, a stepped hole is further formed in the inner side of the movable flange, the stepped hole moves upwards to a certain position, and the inner wall of the stepped hole can be in contact with the T-shaped outer wall surface of the lower connecting body.
3. The quick connecting device for the oxygen lance of the converter as claimed in claim 1, characterized in that: the connecting blocks are symmetrically arranged on two sides of the lower clamping groove; the connecting block is provided with a bolt hole; the two connecting blocks are connected with the slipknot bolt through a matched pin shaft and a check ring, and the slipknot bolt is provided with a cotter pin for preventing rotation.
4. The quick connecting device for the oxygen lance of the converter as claimed in claim 1, characterized in that: an upper annular hard sealing ring and a lower annular hard sealing ring are horizontally fixed on the periphery of the inverted conical cylinder; the inner wall of the inverted conical connecting hole and the hard sealing ring form hard sealing.
5. The quick connecting device for the oxygen lance of the converter as claimed in claim 1, characterized in that: the upper end surface of the lower connecting body is provided with an annular groove; and a sealing rubber ring which forms a seal with the lower end face of the fixed flange is arranged in the annular groove.
6. The quick connecting device for the oxygen lance of the converter as claimed in claim 5, characterized in that: the upper end surface of the movable flange is lower than the upper end surface of the lower connecting body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405953.0U CN210528963U (en) | 2019-08-27 | 2019-08-27 | Quick connecting device of converter oxygen lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405953.0U CN210528963U (en) | 2019-08-27 | 2019-08-27 | Quick connecting device of converter oxygen lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210528963U true CN210528963U (en) | 2020-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921405953.0U Active CN210528963U (en) | 2019-08-27 | 2019-08-27 | Quick connecting device of converter oxygen lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210528963U (en) |
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2019
- 2019-08-27 CN CN201921405953.0U patent/CN210528963U/en active Active
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Address after: 301500 Wuwei Road, economic development zone, Ninghe District, Tianjin Patentee after: Tianjin Xintian Steel United Special Steel Co.,Ltd. Address before: 301500 Wuwei Road, Ninghe Economic Development Zone, Tianjin Patentee before: TIANJIN TIANGANG UNITED SPECIAL STEEL Co.,Ltd. |