CN204039433U - A kind of BOF Oxygen Lance Position measuring apparatus - Google Patents
A kind of BOF Oxygen Lance Position measuring apparatus Download PDFInfo
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- CN204039433U CN204039433U CN201420501930.0U CN201420501930U CN204039433U CN 204039433 U CN204039433 U CN 204039433U CN 201420501930 U CN201420501930 U CN 201420501930U CN 204039433 U CN204039433 U CN 204039433U
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Abstract
A kind of BOF Oxygen Lance Position measuring apparatus, belonging to converter oxygen gun equipment technical field, bessemerizing the actual range of oxygen rifle rifle end surface to static molten steel face for measuring.Its technical scheme is: the upper end of its two pipe connectings is inserted in two taper holes of oxygen rifle rifle head, the holes for clamping of level is arranged at the bottom of two pipe connectings, holding bolt is locked by fitting nut through holes for clamping, the upper end of thief rod is inserted in the pore of a pipe connecting lower end, pipe connecting sidewall has jackscrew to be held out against by thief rod, and the lower end of thief rod is relative with converter molten steel liquid level.Pipe connecting of the present utility model and thief rod move down along with oxygen rifle, inserted the degree of depth of liquid steel level, can accurately measure oxygen lance position by thief rod.The utility model can control reasonable rifle position in converting process, and then can obtain good blowing index, reduces metal consumption, reduces the erosion to furnace lining, improves furnace life and rifle age, reduces burning out, for safety in production provides reliable guarantee of oxygen rifle and equipment.
Description
Technical field
The utility model relates to a kind of converter oxygen gun blowing rifle level measuring arrangement, belongs to converter oxygen gun equipment technical field.
Background technology
Converter oxygen gun is made up of rifle head, the body of a gun, gun breech three part.The effect of gun breech is that oxygen rifle is fixed on transmission rig, passes into water coolant and oxygen simultaneously; The effect of the body of a gun transmits water coolant and oxygen to rifle head, while be also send rifle head to the parts of working position; The effect of rifle head be to converter inside metal oxygen supply, thus complete the smelting of molten steel.The topmost function of oxygen rifle of converter is exactly that the pressure energy of oxygen is converted to kinetic energy at a high speed, thus reaches the object being blown into metal pool.Because the envrionment temperature of oxygen rifle work is very high, nucleus can reach more than 3000 degrees Celsius, so rifle head is all form by red copper casting processing, the inside passes into water coolant to ensure that rifle head is not burnt.
After oxygen lance blow head structure is determined, under certain oxygen pressure, certain oxygen flow condition, must could obtain good blowing index by reasonably regulating oxygen rifle height.In Converter Oxigen Blowing steelmaking process, oxygen lance position is a very important parameter, and it is directly connected to the decarburization effect in steelmaking process.Impact depth is excessively shallow, and the utilization ratio of decarbonization rate and oxygen reduces; Impact depth is excessively dark, likely damages furnace bottom.When rifle position is determined unreasonable, phosphorus, sulphur are removed in the bad directly impact of bitsization, and foamy slag even can be caused to overflow and metal expulsion, metal consumption can be caused like this to increase, and affect the control of terminal temperature and the judgement of end point carbon, even burn rifle or burn out equipment, having a strong impact on production and safety.For the steelmaking system that dust-removal system is electric dust-removing process technology, oxygen rifle open blow rifle position control unreasonable, electric precipitation detonation discharge increased frequency can be caused, have a strong impact on equipment run and safety in production.
Determine that suitable rifle position needs the factor of consideration two aspects: one is to have certain impact area; Two is under the not impaired condition of guarantee furnace bottom, has certain impact depth.Oxygen lance position is a relative quantity, is to represent with the distance in oxygen lance blow head end face and tranquil molten steel of melting bath face.The blowing of oxygen rifle has several fixing blowing pattern usually, and in pattern, rifle position is constant, but in reality, converter profile is change, and the rifle position of oxygen rifle is again a dynamic parameter.Along with the increase of steel-making heat, furnace lining suffers erosion constantly thinning, heat size constantly increases, the particularly middle and later periods in furnace life, steel liquid level fluctuation is comparatively large, and oxygen rifle blowing setting rifle position and the biased difference of actual rifle are comparatively large, therefore, need measure steel liquid level every certain heat and revise, reach setting oxygen lance position consistent with actual oxygen lance position.The oxygen lance position measuring method of current employing is exactly on oxygen rifle rifle head excircle, tie up an oxygen lance with iron wire after iron is converted in converter, then fall rifle and carry rifle to certain setting rifle position, oxygen lance can be stained with molten iron bits, oxygen lance is taken out and measures the distance of dry slag position to rifle head position, this distance is exactly the distance of oxygen rifle apart from liquid level, namely oxygen lance position.Adopt iron wire binding oxygen lance method exist binding loosely, binding and dismounting time long impact steel-making rhythm, oxygen lance come off measure unsuccessfully, oxygen lance flexural measurement is inaccurate, gun barrel is stained with slag and cannot be bundled the technical problems such as measurement.
In sum, be necessary to improve existing BOF Oxygen Lance Position measuring apparatus, Measurement accuracy oxygen lance position, finally realize good blowing index.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of BOF Oxygen Lance Position measuring apparatus, this measuring apparatus can measure the distance of converter oxygen gun rifle end surface to molten steel face accurately and reliably rapidly, for in converting process, control of lance position provides reliable basis, realize good blowing index.
The technical scheme solved the problems of the technologies described above is:
A kind of BOF Oxygen Lance Position measuring apparatus, it comprises thief rod, pipe connecting, holding bolt, fitting nut and jackscrew, pipe connecting is two steel pipes, the external diameter of two pipe connectings and the taper hole internal diameter of oxygen rifle rifle head match, the upper end of two pipe connectings is inserted in two taper holes of oxygen rifle rifle head, the holes for clamping of level is arranged at the bottom of two pipe connectings, holding bolt is locked by fitting nut through holes for clamping, the upper end of thief rod is inserted in the pore of a pipe connecting lower end, pipe connecting sidewall there is jackscrew to be held out against by thief rod, the lower end of thief rod is relative with converter molten steel liquid level.
Above-mentioned BOF Oxygen Lance Position measuring apparatus, the upper bend of described two pipe connectings, the taper hole angle of inclination of bending angle and oxygen rifle rifle head matches, after the taper hole of oxygen rifle rifle head is inserted on two pipe connecting tops respectively, the lower parallel of two pipe connectings.
Above-mentioned BOF Oxygen Lance Position measuring apparatus, the tube wall bending place of described two pipe connectings is welded with limited block respectively.
Above-mentioned BOF Oxygen Lance Position measuring apparatus, the end of described holding bolt and jackscrew is welded with holding bolt handle and jackscrew fastening handle respectively.
Above-mentioned BOF Oxygen Lance Position measuring apparatus, the outer side wall of the holes for clamping of described pipe connecting is welded with cushion block, cushion block has the through hole that holding bolt passes, and the outer side wall of the top wire hole of pipe connecting is welded with jackscrew nut.
The beneficial effects of the utility model are:
Pipe connecting of the present utility model is connected with oxygen rifle rifle head, and the lower end of pipe connecting installs and measures bar, and pipe connecting and thief rod move down along with oxygen rifle, inserted the degree of depth of liquid steel level, can accurately measure oxygen lance position by thief rod.The utility model is by measuring the actual range in oxygen lance blow head end face and the tranquil molten steel of melting bath face of converter, and accurately control reasonable rifle position for blowing and lay a good foundation, conservative control rifle potential energy strengthens decarburization effect, improves the utilization ratio of oxygen, obtains good blowing index; Control reasonable rifle potential energy enhancingization slag effect, effectively remove phosphorus, sulphur, reduce foam and to overflow slag and metal expulsion, reduce metal consumption, improve terminal temperature composition hit rate; Control reasonable rifle position and can also reduce erosion to furnace lining, improve furnace life and rifle age, reduce the damage of oxygen rifle and dust-removal system equipment, for safety in production provides Reliable guarantee.The utility model structure is simple, easy to use, respond well, making is easy, in converting process, control of lance position provides reliable basis, is worthy of popularization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model and oxygen rifle connection diagram.
In figure, mark is as follows: pipe connecting 1, limited block 2, cushion block 3, holding bolt handle 4, holding bolt 5, jackscrew fastening handle 6, jackscrew 7, jackscrew nut 8, fitting nut 9, thief rod 10, connection mechanism 11, oxygen rifle rifle head 12.
Embodiment
The utility model forms connection mechanism 11 by pipe connecting 1, limited block 2, cushion block 3, holding bolt handle 4, holding bolt 5, jackscrew fastening handle 6, jackscrew 7, jackscrew nut 8, fitting nut 9, thief rod 10, connection mechanism 11 is connected to below oxygen rifle rifle head 12, measures oxygen lance position.
Show in figure, pipe connecting 1 is two steel pipes, and the external diameter of two pipe connectings 1 and the taper hole internal diameter of oxygen rifle rifle head 12 match, and the upper end of two pipe connectings 1 is inserted in two taper holes of oxygen rifle rifle head 12.Because the medullary ray of oxygen rifle rifle head 12 and the angle of taper hole medullary ray are 12 °, in order to make pipe connecting 1 lower end of insertion vertically downward, the pipe connecting 1 inserted in oxygen rifle rifle head 12 taper hole must be bent certain angle.In actual use, external diameter due to pipe connecting 1 is less than the internal diameter of oxygen rifle rifle head 12 taper hole, the medullary ray of pipe connecting 1 inserted in oxygen rifle rifle head 12 taper hole is not overlap completely with the medullary ray of taper hole, therefore pipe connecting about 1 two bending angle is 8 °, after the taper hole making two pipe connecting 1 tops insert oxygen rifle rifle head 12 is respectively locked, the lower parallel of two pipe connectings 1.
Show in figure, the tube wall bending place of two pipe connectings 1 is welded with limited block 2 respectively, makes pipe connecting 1 depth of penetration in oxygen rifle rifle head 12 be the taper hole length 10mm being greater than oxygen rifle rifle head 12, is limited in oxygen rifle rifle head 12 end face during insertion by limited block 2.
Show in figure, the holes for clamping of level is arranged at the bottom of two pipe connectings 1, and holding bolt 5 is locked by fitting nut 9 through holes for clamping.The outer side wall of the holes for clamping of pipe connecting 1 is welded with cushion block 3, cushion block 3 has the through hole that holding bolt 5 passes.The welding edges of holding bolt 5 has holding bolt handle 4, plays the effect of fastening labour-saving.During use, fitting nut 9 and holding bolt 5 are screwed, two pipe connectings 1 are inwardly clamped on the taper hole of oxygen rifle rifle head 12, connection mechanism 11 and oxygen rifle rifle head 12 are connected firmly, when being unclamped by holding bolt 5, connection mechanism 11 and oxygen rifle rifle head 12 depart from, and easily take off.
Show in figure, the upper end of thief rod 10 is inserted in the pore of pipe connecting 1 lower end, pipe connecting 1 sidewall there is jackscrew 7 to be held out against by thief rod 10, the outer side wall of the top wire hole of pipe connecting 1 is welded with jackscrew nut 8, the welding edges of jackscrew 7 has jackscrew fastening handle 6, the lower end of thief rod 10 is relative with converter molten steel liquid level, and the length of thief rod 10 is 1.8-2 rice.
The pipe connecting 1 of an embodiment of the present utility model adopts one-inch steel pipe, and thief rod 10 adopts four points of iron pipes.
Use procedure of the present utility model is as follows:
Connection mechanism 11 is fixedly connected on oxygen rifle rifle head 12, and oxygen rifle rifle head 12 is welded on oxygen rifle body, and oxygen rifle body is fixed on oxygen lance lifting bogie, and oxygen lance lifting bogie is realized rising and down maneuver by oxygen lance lifting driving mechanisms control.
Oxygen rifle is dropped to setting 1.4 meters, rifle position by oxygen lance lifting bogie, the thief rod 10 of 2 meters is inserted in the molten steel in converter body, a small amount of slag is stained with on thief rod 10 surface of exposing molten steel, carbonization is burnt by high-temperature molten steel in thief rod 10 surface of inserting in molten steel, thief rod 10 is formed and significantly identifies vestige exposing molten steel and insert molten steel combining site, when oxygen rifle is got back to oxygen lance position preparation measuring position by lifting, connection mechanism 11 is pulled down from oxygen rifle rifle head 12, distance thief rod 10 identified between vestige position and connection mechanism 11 upper limit position block 2 position is gone out with box dipstick metering, this distance is exactly the actual range of oxygen rifle rifle head 12 end face and tranquil molten bath liquid steel level, the namely actual rifle position of oxygen rifle, when there is error this actual rifle position with setting 1.4 meters, rifle position, by revising the setting height of liquid steel level, reach oxygen rifle setting rifle position and the on all four object in oxygen rifle actual rifle position.
Claims (5)
1. a BOF Oxygen Lance Position measuring apparatus, it is characterized in that: it comprises thief rod (10), pipe connecting (1), holding bolt (5), fitting nut (9) and jackscrew (7), pipe connecting (1) is two steel pipes, the external diameter of two pipe connectings (1) and the taper hole internal diameter of oxygen rifle rifle head (12) match, the upper end of two pipe connectings (1) is inserted in two taper holes of oxygen rifle rifle head (12), the holes for clamping of level is arranged at the bottom of two pipe connectings (1), holding bolt (5) is locked by fitting nut (9) through holes for clamping, the upper end of thief rod (10) is inserted in the pore of pipe connecting (1) lower end, pipe connecting (1) sidewall there is jackscrew (7) held out against by thief rod (10), the lower end of thief rod (10) is relative with converter molten steel liquid level.
2. BOF Oxygen Lance Position measuring apparatus according to claim 1, it is characterized in that: the upper bend of described two pipe connectings (1), bending angle and the taper hole angle of inclination of oxygen rifle rifle head (12) match, after the taper hole of oxygen rifle rifle head (12) is inserted on two pipe connecting (1) tops respectively, the lower parallel of two pipe connectings (1).
3. BOF Oxygen Lance Position measuring apparatus according to claim 2, is characterized in that: the tube wall bending place of described two pipe connectings (1) is welded with limited block (2) respectively.
4. BOF Oxygen Lance Position measuring apparatus according to claim 3, is characterized in that: the end of described holding bolt (5) and jackscrew (7) is welded with holding bolt handle (4) and jackscrew fastening handle (6) respectively.
5. BOF Oxygen Lance Position measuring apparatus according to claim 4, it is characterized in that: the outer side wall of the holes for clamping of described pipe connecting (1) is welded with cushion block (3), cushion block (3) there is the through hole that holding bolt (5) passes, the outer side wall of the top wire hole of pipe connecting (1) is welded with jackscrew nut (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420501930.0U CN204039433U (en) | 2014-09-02 | 2014-09-02 | A kind of BOF Oxygen Lance Position measuring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420501930.0U CN204039433U (en) | 2014-09-02 | 2014-09-02 | A kind of BOF Oxygen Lance Position measuring apparatus |
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| CN204039433U true CN204039433U (en) | 2014-12-24 |
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| CN201420501930.0U Active CN204039433U (en) | 2014-09-02 | 2014-09-02 | A kind of BOF Oxygen Lance Position measuring apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107142354A (en) * | 2017-03-28 | 2017-09-08 | 河钢股份有限公司邯郸分公司 | A kind of quick, safety oxygen lance position measuring method |
| CN109136459A (en) * | 2017-06-27 | 2019-01-04 | 上海梅山钢铁股份有限公司 | A kind of device and method measuring converter molten pool level and relative position |
| CN111380492A (en) * | 2018-12-31 | 2020-07-07 | 新疆八一钢铁股份有限公司 | Method for measuring 120t converter gun position |
-
2014
- 2014-09-02 CN CN201420501930.0U patent/CN204039433U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107142354A (en) * | 2017-03-28 | 2017-09-08 | 河钢股份有限公司邯郸分公司 | A kind of quick, safety oxygen lance position measuring method |
| CN109136459A (en) * | 2017-06-27 | 2019-01-04 | 上海梅山钢铁股份有限公司 | A kind of device and method measuring converter molten pool level and relative position |
| CN111380492A (en) * | 2018-12-31 | 2020-07-07 | 新疆八一钢铁股份有限公司 | Method for measuring 120t converter gun position |
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Address after: 067102 A block 520, Luanhe town finance square, Shuangluan District, Chengde, Hebei Patentee after: River steel Limited by Share Ltd Chengde branch Address before: 067102 Luanhe town finance square, Shuangluan District, Chengde, Hebei, Hebei iron and steel Limited by Share Ltd Chengde branch Patentee before: Chengde Branch Co., Ltd. of Hebei Iron & Steel Group |