CN104232848A - System for thermal insulation agent adding and wire feeding in RH process - Google Patents
System for thermal insulation agent adding and wire feeding in RH process Download PDFInfo
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- CN104232848A CN104232848A CN201410544027.7A CN201410544027A CN104232848A CN 104232848 A CN104232848 A CN 104232848A CN 201410544027 A CN201410544027 A CN 201410544027A CN 104232848 A CN104232848 A CN 104232848A
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- silk
- heat preserving
- preserving agent
- wire
- feeding
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Abstract
The invention discloses a system for thermal insulation agent adding and wire feeding in an RH process. The system for thermal insulation agent adding and wire feeding in the RH process is used for adding thermal insulation agent and feeding calcium wire and/or aluminium wire into steel ladle. The system for thermal insulation agent adding and wire feeding in the RH process comprises a thermal insulation agent adding mechanism and a wire feeding mechanism. a first control device is arranged for controlling the feed quantity of the thermal insulation agent adding mechanism, a second control device is used for controlling the wire feeding type and speed of the wire feeding mechanism, and both the first control device and the second control device are connected with a master operating system of the RH process. The system for thermal insulation agent adding and wire feeding in the RH process has the advantages of being simple in structure, capable of combining the feeding system and the thermal insulation agent adding system and small area occupation and capable of achieving long distance automatic control and improving working efficiency and guaranteeing safety of operator. Besides, the system for thermal insulation agent adding and wire feeding in RH process is also provided with a dust removal system, structure is simple, device cost is low, great dust removal effect is achieved, and working environment is fully improved due to the fact that the steelmaking dust removal system is connected with the system for thermal insulation agent adding and wire feeding in the RH process.
Description
Technical field
The present invention relates to steelmaking technical field, be specifically related to a kind of system of adding heat preserving agent and hello silk for RH operation.
Background technology
At present, RH vacuum refinement has become the important ring of process for making, is to promote the effective method of steel quality.Molten steel, after RH vacuum-treat, can be transported to hello silk position and carry out feeding silk process to molten steel.Feeding molten steel temperature drop in silk process for reducing, needing before feeding silk to add heat preserving agent to molten steel surface.The interpolation of conventional vacuum agent adopts artificial input, and heat preserving agent adds and feeds the volume of smoke and waste gas that can produce in silk process, therefore has a strong impact on the production environment of the healthy of operator and steelworks, does not also meet the environmental protection standard that country is new.
Therefore be necessary to design a kind of system of adding heat preserving agent and hello silk for RH operation, to overcome the problems referred to above.
Summary of the invention
The object of the invention is to the defect overcoming prior art, provide a kind of system of adding heat preserving agent and hello silk for RH operation, automatic interpolation and the automatic wire feeding of heat preserving agent can be realized, enhance productivity, improve production environment.
The present invention is achieved in that
The invention provides a kind of system of adding heat preserving agent and hello silk for RH operation, for adding heat preserving agent and feed calcium silk and/or aluminium wire in ladle, comprise heat preserving agent and add mechanism and wire feeder structure.Described heat preserving agent adds mechanism and comprises and evenly add the distributor of heat preserving agent, at least one revolving plow reclaimer to molten steel surface and connect the supply lines of distributor and each revolving plow reclaimer, each revolving plow reclaimer is connected with a feed bin, described supply lines is provided with the control main valve controlling feed quantity, and described control main valve is connected with first control device; Described wire feeder structure comprises setting two wire feeders on the operational platform and the second control device of control wire feeder hello silk type and feeding wire speed, and described two wire feeders are symmetricly set on the both sides of ladle axis; Described first control device and second control device are all connected with RH operation master operating system.
Further, described wire feeder is two-wire wire feeder, is connected respectively with calcium silk feeding mechanism and aluminium wire feeding mechanism; Described second control device comprises feeds calcium silk pilot circuit, feeding precision pilot circuit and detects the velocity sensor of feeding calcium silk and feeding precision speed.
Further, described ladle bottom is arranged with two blocks of Argon gas permeable bricks adjacent to axis, and hello the silk point of two wire feeders lays respectively at the top of two blocks of Argon gas permeable bricks.
Further, described control main valve is pneumatic gate valve, and described first control device is cylinder, and the pull up circuit of described cylinder is connected with RH operation master operating system.
Further, described feed bin top is provided with thorn glassware.
Further, described distributor comprises the bell of reversal of the natural order of things under service platform and the multiple taper inner covers be arranged in bell inner chamber, the tapering of each taper inner cover is identical with the tapering of described bell, and bell and each basal diameter concordant with the bottom surface of each taper inner cover evenly successively decreases from outside to inside successively; Each taper inner cover has been evenly arranged multiple circular hole along the conical surface; Described each taper inner cover is fixedly connected with bell by threaded stud.
Further, the axis of described bell overlaps with the axis of ladle, and the ratio of the basal diameter of described bell and the ladle internal diameter at liquid steel level place is 0.65 ~ 0.7, and the height of the bottom surface distance liquid steel level of described bell is 900 ~ 1200mm.
Further, described distributor also comprises taper outer cover, described taper outer cover comprises tapered portion and is positioned at the annular section of bottom, and described tapered portion and annular section are along the circumferential direction evenly equipped with multiple hanger respectively, under each hanger hangs on service platform by a chain sling; Described bell is arranged in taper outer cover inner chamber and is connected with described taper outer cover bolt; Described tapered portion inwall is welded with multiple pawl nail and has built refractory materials, and the thickness of described refractory materials is 50 ~ 60mm; Described taper outer cover is connected with cleaning apparatus.
Further, described cleaning apparatus comprises annular and is arranged on dust removing tube above taper outer cover, the conical surface of described taper outer cover has along the circumferential direction been evenly arranged multiple dedusting hole, and each dedusting hole is connected with dust removing tube respectively by flange, and described dust removing tube is connected with steel-making dust-removal system.
Further, the diameter of described annular section outer peripheral edge is greater than ladle diameter, is equipped with dust-proof steel chain along described annular section outer peripheral edge.
The present invention has following beneficial effect: by heat preserving agent being added mechanism and wire feeder structure is combined, first control device controls feed quantity, second control device controls hello silk type and the feeding wire speed of wire feeder, and first control device and second control device are all connected with RH operation master operating system, automatic interpolation and the automatic wire feeding of heat preserving agent can be realized, enhance productivity, support personnel's safety.
Further beneficial effect of the present invention is: the form adopting a station 2 two-wire wire feeders to be arranged symmetrically with, and realizes the function that silk fed by 4 lines.Be symmetrical arranged two blocks of Argon gas permeable bricks at ladle bottom, feed silk point and be arranged at above ladle argon-blown gas permeable brick, by improving steel ladle bottom argon blowing argon pressure, improving argon gas stirring power, can improve and feed silk efficiency.
Further beneficial effect of the present invention is: by arranging thorn glassware at feed bin top, and after heat preserving agent is transported to feed bin overhead by overhead traveling crane, thorn glassware punctures packing bag, can realize function heat preserving agent automatic powder adding being added to feed bin.
Further beneficial effect of the present invention is: distributor adopts the bell of reversal of the natural order of things and multiple taper inner cover, each taper inner cover conical surface evenly arranges multiple circular hole, can add heat preserving agent to molten steel surface uniformly.By arranging taper outer cover, and being connected with steel-making dust-removal system by cleaning shaft, the waste gas produced and flue dust can being sent to steel-making dust-removal system in heat preserving agent adding procedure, effectively can improve the Working environment that heat preserving agent adds, improve the feature of environmental protection of technique.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation adding the system of heat preserving agent and hello silk for RH operation that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the distributor that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the structure enlarged diagram of a part in Fig. 2.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of protection of the invention.
As Fig. 1-Fig. 2, the embodiment of the present invention provides a kind of and adds heat preserving agent for RH operation and feed the system of silk, for adding heat preserving agent and feed calcium silk and/or aluminium wire in ladle 9, comprises heat preserving agent and adds mechanism and wire feeder structure.Described heat preserving agent adds mechanism and comprises and evenly add the distributor 8 of heat preserving agent, at least one revolving plow reclaimer 3 to molten steel surface and connect the supply lines 4 of distributor 8 and each revolving plow reclaimer 3, each revolving plow reclaimer 3 is connected with a feed bin 2, described supply lines 4 is provided with the control main valve 6 controlling feed quantity, and described control main valve 6 is connected with first control device; Described wire feeder structure comprises two wire feeders 5 be arranged on the service platform 10 of feeding wire process and the second control device controlling wire feeder 5 hello silk type and feeding wire speed, and described two wire feeders 5 are symmetricly set on the both sides of ladle 9 axis; Described first control device and second control device are all connected with RH operation master operating system.Wherein, described wire feeder 5 is two-wire wire feeder, is connected respectively with calcium silk feeding mechanism and aluminium wire feeding mechanism; Described second control device comprises feeds calcium silk pilot circuit, feeding precision pilot circuit and detects the velocity sensor of feeding calcium silk and feeding precision speed.Described control main valve 6 is pneumatic gate valve, and described first control device is cylinder, and the pull up circuit of described cylinder is connected with RH operation master operating system.
During actual use, merge into a total supply lines 4 after supply lines 4 parallel connection that each revolving plow reclaimer 3 connects, then be connected with distributor 8, namely pneumatic gate valve is arranged in this total supply lines 4.Described pneumatic gate valve controls to start, close and flow control by cylinder, and then controls the feed quantity of heat preserving agent.Every platform wire feeder 5 is connected with calcium silk feeding mechanism and aluminium wire feeding mechanism respectively, can feed calcium silk and aluminium wire simultaneously, and feed calcium silk pilot circuit and feeding precision pilot circuit owing to being provided with, the two does not interfere with each other, and therefore also can feed calcium silk or feeding precision separately.Wire feeder 5 is arranged the velocity sensor detecting and feed calcium silk and feeding precision speed, a velocity sensor can detect the speed of feeding calcium silk and feeding precision simultaneously, can be learnt feed filament length degree by feeding wire speed and hello silk time.By described first control device is connected with RH operation master operating system with second control device, the Long-distance Control of pneumatic gate valve and wire feeder 5 can be realized, RH operation master operating system receives the molten steel composition after vacuum-treat and temperature information, send to wire feeder 5 as required and feed filament length degree and feed the signals such as silk type, realize automatic wire feeding function.Therefore, the embodiment of the present invention can realize automatic interpolation and the automatic wire feeding of heat preserving agent, enhances productivity, support personnel's safety.
As Fig. 1, as a kind of preferred structure of the present embodiment, be arranged with two blocks of Argon gas permeable bricks bottom described ladle 9 adjacent to axis, hello the silk point of two wire feeders 5 lays respectively at the top of two blocks of Argon gas permeable bricks.General ladle bottom only arranges one block of Argon gas permeable brick, the present embodiment by being symmetrical arranged two blocks of Argon gas permeable bricks bottom ladle 9 near axis, ladle argon-blown adopts continuously adjustabe pattern, ladle 9 BOTTOM ARGON BLOWING argon pressure is increased when feeding silk, improve argon gas stirring power, quickening aluminum steel or calcium line dissolve rate of diffusion in molten steel, improve and feed silk efficiency.
As Fig. 1, be provided with thorn glassware 1 at described feed bin 2 top, after heat preserving agent is transported to feed bin 2 overhead by overhead traveling crane, after thorn glassware 1 punctures outer packaging bag, namely heat preserving agent adds feed bin 2, therefore can realize function heat preserving agent automatic powder adding being added to feed bin 2.
As Fig. 2, as a kind of preferred structure of the present embodiment, described distributor 8 comprises the bell 11 of reversal of the natural order of things under service platform 10 and the multiple taper inner covers 12 be arranged in bell 11 inner chamber, the tapering of each taper inner cover 12 is identical with the tapering of described bell 11, and bell 11 and each basal diameter concordant with the bottom surface of each taper inner cover 12 evenly successively decreases successively; Each taper inner cover 12 has been evenly arranged multiple circular hole along the conical surface; Described each taper inner cover 12 is fixedly connected with bell 11 by threaded stud.In the present embodiment, described taper inner cover 12 is 3, is followed successively by the first inner cover, the second inner cover and the 3rd inner cover from outside to inside.Each taper inner cover 12 is all fixedly connected with by threaded stud with between bell 11 and between adjacent conical inner cover 12, can ensure bulk strength and the structural stability of distributor 8.Each taper inner cover 12 is evenly arranged multiple circular hole with a certain size diameter along the conical surface, and by this structure, the heat preserving agent entered in bell 11 can join molten steel surface by the circular hole on each taper inner cover 12 successively.Because bell 11 and the first inner cover have tapering, under the effect of universal gravity constant, make parabolic motion from out the heat preserving agent of the annular bottom surface between bell 11 and the first inner cover, therefore the area coverage of heat preserving agent is greater than the base area of bell 11.Further, the axis of described bell 11 overlaps with the axis of ladle 9, the ratio of the basal diameter of described bell 11 and ladle 9 internal diameter at liquid steel level place is 0.65 ~ 0.7, the height of the bottom surface distance liquid steel level of described bell 11 is 900 ~ 1200mm, and this structure can ensure the whole liquid steel level of interpolation area covering of heat preserving agent.Ladle 9 internal diameter corresponding to liquid steel level place is the situation of 2760mm, and the basal diameter of described bell 11 is 1830mm, and bell 11 is 1m apart from the height of liquid steel level, and heat preserving agent can be made to add whole liquid steel level to.
As Fig. 2, described distributor 8 also comprises taper outer cover 13, described taper outer cover 13 comprises tapered portion and is positioned at the annular section 14 of bottom, and described tapered portion and annular section 14 are along the circumferential direction evenly equipped with multiple hanger respectively, and each hanger hangs on service platform 10 times by a chain sling 15; Described bell 11 is arranged in taper outer cover 13 inner chamber and is connected with described taper outer cover 13 bolt; Described tapered portion inwall is welded with multiple pawl nail 16 and has built refractory materials 17, and the thickness of described refractory materials 17 is 50 ~ 60mm; Described taper outer cover 13 is connected with cleaning apparatus.Preferably, described cleaning apparatus comprises annular and is arranged on dust removing tube 18 above taper outer cover 13, the conical surface of described taper outer cover 13 has along the circumferential direction been evenly arranged multiple dedusting hole, and each dedusting hole is connected with dust removing tube 18 respectively by flange, and described dust removing tube 18 is connected with steel-making dust-removal system.By arranging taper outer cover 13, and be connected with steel-making dust-removal system by dust removing tube 18, the waste gas that heat preserving agent can be added and produce in hello silk process and flue dust are sent to steel-making dust-removal system, effectively can improve the Working environment that heat preserving agent adds, improve the feature of environmental protection of technique.Taper outer cover 13 inwall has built refractory materials 17, makes the refractory temperature of taper outer cover 13 can reach more than 1000 DEG C, and can regularly replace refractory materials 17, effectively improve the work-ing life of equipment.Described bell 11 and each taper inner cover 12 adopt the steel plate materials of Wear-resistant, high-temperature resistant, can improve work-ing life.
In addition, the diameter of described annular section 14 outer peripheral edge is greater than the diameter at ladle 9 top, is equipped with dust-proof steel chain 19 along described annular section 14 outer peripheral edge.Actual when using, the diameter of annular section 14 outer peripheral edge is set as the diameter slightly larger than ladle 9 top, make dust-proof steel chain 19 around ladle 9 top not with ladle 9 wall contacts.By setting up dust-proof steel chain 19, dust removing effects can be improved further, effectively improving the Working environment that heat preserving agent adds.
The system architecture for RH operation interpolation heat preserving agent and hello silk that the embodiment of the present invention provides is simple, can will feed silk system and the combination of heat preserving agent add-on system, floor space is little, and can realize remote automation control, has ensured the personnel safety of operator while increasing work efficiency.Also be provided with dust-removal system in addition, by being connected with steel-making dust-removal system, structure is simple, and equipment cost is low, can play good dust removing effects simultaneously, substantially improve Working environment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. add heat preserving agent for RH operation and feed a system for silk, for adding heat preserving agent and feed calcium silk and/or aluminium wire in ladle, it is characterized in that: comprise heat preserving agent and add mechanism and wire feeder structure; Described heat preserving agent adds mechanism and comprises and evenly add the distributor of heat preserving agent, at least one revolving plow reclaimer to molten steel surface and connect the supply lines of distributor and each revolving plow reclaimer, each revolving plow reclaimer is connected with a feed bin, described supply lines is provided with the control main valve controlling feed quantity, and described control main valve is connected with first control device; Described wire feeder structure comprises setting two wire feeders on the operational platform and the second control device of control wire feeder hello silk type and feeding wire speed, and described two wire feeders are symmetricly set on the both sides of ladle axis; Described first control device and second control device are all connected with RH operation master operating system.
2. system of adding heat preserving agent and hello silk for RH operation according to claim 1, is characterized in that: described wire feeder is two-wire wire feeder, is connected respectively with calcium silk feeding mechanism and aluminium wire feeding mechanism; Described second control device comprises feeds calcium silk pilot circuit, feeding precision pilot circuit and detects the velocity sensor of feeding calcium silk and feeding precision speed.
3. system of adding heat preserving agent and hello silk for RH operation according to claim 1 and 2, it is characterized in that: described ladle bottom is arranged with two blocks of Argon gas permeable bricks adjacent to axis, hello the silk point of two wire feeders lays respectively at the top of two blocks of Argon gas permeable bricks.
4. system of adding heat preserving agent and hello silk for RH operation according to claim 1, it is characterized in that: described control main valve is pneumatic gate valve, described first control device is cylinder, and the pull up circuit of described cylinder is connected with RH operation master operating system.
5. adding heat preserving agent for RH operation and feeding the system of silk according to claim 1 or 4, is characterized in that: described feed bin top is provided with thorn glassware.
6. system of adding heat preserving agent and hello silk for RH operation according to claim 1, it is characterized in that: described distributor comprises the bell of reversal of the natural order of things under service platform and the multiple taper inner covers be arranged in bell inner chamber, the tapering of each taper inner cover is identical with the tapering of described bell, and bell and each basal diameter concordant with the bottom surface of each taper inner cover evenly successively decreases from outside to inside successively; Each taper inner cover has been evenly arranged multiple circular hole along the conical surface; Described each taper inner cover is fixedly connected with bell by threaded stud.
7. system of adding heat preserving agent and hello silk for RH operation according to claim 5, it is characterized in that: the axis of described bell overlaps with the axis of ladle, the ratio of the basal diameter of described bell and the ladle internal diameter at liquid steel level place is 0.65 ~ 0.7, and the height of the bottom surface distance liquid steel level of described bell is 900 ~ 1200mm.
8. adding heat preserving agent for RH operation and feeding the system of silk according to claim 6 or 7, it is characterized in that: described distributor also comprises taper outer cover, described taper outer cover comprises tapered portion and is positioned at the annular section of bottom, described tapered portion and annular section are along the circumferential direction evenly equipped with multiple hanger respectively, under each hanger hangs on service platform by a chain sling; Described bell is arranged in taper outer cover inner chamber and is connected with described taper outer cover bolt; Described tapered portion inwall is welded with multiple pawl nail and has built refractory materials, and the thickness of described refractory materials is 50 ~ 60mm; Described taper outer cover is connected with cleaning apparatus.
9. system of adding heat preserving agent and hello silk for RH operation according to claim 8, it is characterized in that: described cleaning apparatus comprises annular and is arranged on dust removing tube above taper outer cover, the conical surface of described taper outer cover has along the circumferential direction been evenly arranged multiple dedusting hole, each dedusting hole is connected with dust removing tube respectively by flange, and described dust removing tube is connected with steel-making dust-removal system.
10. system of adding heat preserving agent and hello silk for RH operation according to claim 8, is characterized in that: the diameter of described annular section outer peripheral edge is greater than ladle diameter, is equipped with dust-proof steel chain along described annular section outer peripheral edge.
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| CN201410544027.7A CN104232848B (en) | 2014-10-15 | 2014-10-15 | Add heat preserving agent for RH operation and feed the system of silk |
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| CN201410544027.7A CN104232848B (en) | 2014-10-15 | 2014-10-15 | Add heat preserving agent for RH operation and feed the system of silk |
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| CN104232848B CN104232848B (en) | 2016-08-17 |
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Cited By (3)
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| CN105063277A (en) * | 2015-09-28 | 2015-11-18 | 山东钢铁股份有限公司 | Distributing device of molten steel covering agent |
| CN107447077A (en) * | 2017-08-23 | 2017-12-08 | 浙江杭真能源科技股份有限公司 | Fume dust remover and its dust removal method during vacuum refining furnace hello silk |
| CN110923398A (en) * | 2019-10-31 | 2020-03-27 | 张家港宏昌钢板有限公司 | Wire feeding system |
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| CN104232848B (en) | 2016-08-17 |
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