CN102181624A - Vertical rotary heating furnace of main shaft steel ingot for wind driven generator - Google Patents
Vertical rotary heating furnace of main shaft steel ingot for wind driven generator Download PDFInfo
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- CN102181624A CN102181624A CN 201110102303 CN201110102303A CN102181624A CN 102181624 A CN102181624 A CN 102181624A CN 201110102303 CN201110102303 CN 201110102303 CN 201110102303 A CN201110102303 A CN 201110102303A CN 102181624 A CN102181624 A CN 102181624A
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- driven generator
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Abstract
The invention discloses a vertical rotary heating furnace of a main shaft steel ingot for a wind driven generator. The heating furnace comprises a left furnace wall, a right furnace wall, a rear furnace wall, a top furnace wall, a furnace bottom and a furnace door, wherein an insulating layer is arranged on the inner layer of the furnace wall; a refractory brick layer is arranged at the furnace bottom; and gas burner nozzles are arranged on the lower parts of the left furnace wall and the right furnace wall. The furnace is characterized in that: a circular rotary disc made of refractory materials is arranged in the middle of the furnace bottom; the internal length of the left and right furnace walls is 350 cm, and the internal height is 450 cm; and the internal height of the rear furnace wall is 450 cm, and the internal width is 350 cm. When the furnace is used, the large head of the main shaft steel ingot of the wind driven generator is arranged downwards and the main shaft steel ingot is erected on the circular rotary disc. In the vertical rotary heating furnace of the main shaft steel ingot for the wind driven generator, the main shaft steel ingot of the wind driven generator is heated while vertically rotating, so that the surface of the main shaft steel ingot is heated uniformly; therefore, temperature preservation time can be shortened, the increase of the temperature rising speed and the improvement of the labor efficiency can be facilitated, energy consumption is reduced, production cost is reduced, and steel is saved.
Description
Technical field
The present invention relates to a kind of improvement of process furnace of large-scale steel ingot, while specifically a kind of large-scale steel ingot that can make heats, does vertical revolution in process furnace, thereby the wind driven generator principal shaft steel ingot that improves degree of being heated evenly is erect rotary furnace.
Background technology
In the production of wind driven generator principal shaft, employed raw material is the large-scale steel ingot of frustum or frustum of a pyramid shape, and its base diameter is 85-123.1cm, and top diameter is 107-129.8cm, and length is 201-201.8 cm, heavy 13-27 ton.Need before the forging with large-scale process furnace heating, to reach needed forging temperature, this large-scale process furnace comprises left furnace wall, right furnace wall, furnace wall, back, top furnace wall, furnace bottom and fire door, the internal layer of furnace wall is equipped with thermal insulation layer, furnace bottom is a fire brick layer, bottom at left furnace wall and right furnace wall is provided with coal gas burner, the inner length of furnace wall, a left side, right furnace wall is 450cm, internal height is 350cm, the internal height of back furnace wall is 350cm, inner width is 350cm, and promptly the height of burner hearth and length and width are fit to the traverse of wind driven generator principal shaft steel ingot.When using this large-scale process furnace that the wind driven generator principal shaft steel ingot is heated, the wind driven generator principal shaft steel ingot need be sent in the stove along track by coaster, the wind driven generator principal shaft steel ingot is horizontal on furnace bottom, in order to make the wind driven generator principal shaft steel ingot not at the bottom of the contact oven, also rise with steel pad pad at the two ends of wind driven generator principal shaft steel ingot.Obviously, existing deficiency is when with this large-scale process furnace the wind driven generator principal shaft steel ingot being heated: 1, because the wind driven generator principal shaft steel ingot is motionless, and the flame direction of coal gas burner is a fixed, so, caused the inequality of being heated of wind driven generator principal shaft steel ingot; 2, in order to overcome the uneven shortcoming of being heated, the way that adopts is at present: in the different temperature periods, increase soaking time, as when in 620 ℃-650 ℃ the process furnace that the wind driven generator principal shaft steel ingot under the room temperature is packed into, need insulation 8-12 hour, and with per hour 50-70 ℃ heat-up rate heating, be warming up to 830-860 ℃ then, be incubated 10-18 hour again, be warming up to 1200-1240 ℃ forging temperature again, just can come out of the stove, like this, just increase soaking time, reduced efficiency; 3, owing to adopted two steel pads, these two steel pads are in heat-processed, and all oxidations basically make wind driven generator principal shaft steel ingot under the hot state near furnace bottom, have not only influenced the being heated evenly property in later stage, and have caused the waste of steel.
Summary of the invention
The object of the present invention is to provide a kind of large-scale steel ingot that can make in process furnace, to turn round while heating, do to erect, thereby improve degree of being heated evenly, and can enhance productivity, avoid steel waste, maneuverable wind driven generator principal shaft steel ingot to erect rotary furnace.
For reaching above purpose, the technical solution adopted in the present invention is: this wind driven generator principal shaft steel ingot is erect rotary furnace, comprise left furnace wall, right furnace wall, back furnace wall, the furnace wall, top, furnace bottom and fire door, the internal layer of furnace wall is equipped with thermal insulation layer, furnace bottom is a fire brick layer, bottom at left furnace wall and right furnace wall is provided with coal gas burner, it is characterized in that: be provided with the round turntable that refractory materials is made at the middle part of furnace bottom, furnace wall, a left side, the inner length of right furnace wall is 350cm, internal height is 450cm, the internal height of back furnace wall is 450cm, inner width is 350cm, when the wind driven generator principal shaft steel ingot is heated, with the wind driven generator principal shaft steel ingot greatly upside down, be erected on the round turntable, erect revolution by the rotation drive wind driven generator principal shaft steel ingot of round turntable, thereby be implemented in heating on one side in the process furnace, setting is on one side rotated, and reaches to be heated evenly.By to the increasing and shorten of burner hearth, erect and place to adapt to the wind driven generator principal shaft steel ingot.
The present invention also implements by following measure: the diameter of described round turntable is 130cm, with the diameter at butt end of the wind driven generator principal shaft steel ingot that adapts to maximum specification; The thickness of round turntable is 50cm, with furnace bottom flame retardant coating consistency of thickness, its axle is a steel column, diameter is 100cm, weight with energy load-bearing wind electricity machine main shaft steel ingot, its length is 80cm, extend in the bottom space of furnace bottom, the fixing upper support disk in the bottom of axle, support disk is stuck in the circular groove of steel base, circular groove bottom at steel base is provided with circular slideway, steel ball on arranging in circular slideway can reduce rotary resistance under the load-bearing state, keeps stable rotation, on axle, be provided with gear, by the transmission chain transmission that is connected with the driving toothed gear of slowspeed machine.
Described slowspeed machine is arranged on the worktable of the process furnace outside, and like this, slowspeed machine turns round in the environment that is not heated, and can improve the work-ing life of slowspeed machine, and the velocity of rotation of slowspeed machine is 0.1 rev/min, and the rotating speed that drives round turntable is 0.1 rev/min.
Described wind driven generator principal shaft steel ingot in 620 ℃-650 ℃ the process furnace of packing under the room temperature, needs insulation earlier 3 hours, with per hour 60-80 ℃ heat-up rate heating, be warming up to 830-860 ℃ then, be incubated 3.5-7 hour again, be warming up to 1200-1240 ℃ forging temperature again, come out of the stove.
Match with it, the shove charge of wind driven generator principal shaft steel ingot can be adopted special-purpose fork truck with coming out of the stove.
Beneficial effect of the present invention is: with compare at process furnace internal heating wind driven generator principal shaft steel ingot at present, because wind driven generator principal shaft steel ingot limit is erect and is rotated, the limit heating, the surface is heated evenly, so two sections soaking times have shortened 5-9 hour respectively and 6.5-11 hour, can help improving simultaneously heat-up rate, shortened 15-20 hour the heat-up time of one stove, improve efficiency, saved energy consumption, reduced production cost; Owing to do not re-use the steel pad, so save steel yet.Owing to having adopted the fork truck shove charge and having come out of the stove, so easy to operate.
Description of drawings
Fig. 1 looks synoptic diagram for structure master of the present invention.
Fig. 2 is the assembly structure office cross-sectional schematic of round turntable of the present invention.
Fig. 3 is a wind driven generator principal shaft steel ingot shove charge view of the present invention.
Embodiment
Embodiment 1
Fig. 1, Fig. 2, Fig. 3 have provided an embodiment, try out in our company in January, 2011.As Fig. 1, Fig. 2, shown in Figure 3, this wind driven generator principal shaft steel ingot is erect rotary furnace, comprise left furnace wall 1, right furnace wall 2, back furnace wall 3, furnace wall 4, top, furnace bottom 5 and fire door 6, the internal layer of furnace wall is equipped with thermal insulation layer, furnace bottom 5 is a fire brick layer, bottom at left furnace wall 1 and right furnace wall 2 is provided with coal gas burner 7, it is characterized in that: be provided with the round turntable 8 that refractory materials is made at the middle part of furnace bottom 5, furnace wall 1, a left side, the inner length of right furnace wall 2 is 350cm, internal height is 450cm, the internal height of back furnace wall 3 is 450cm, inner width is 350cm, during to 11 heating of wind driven generator principal shaft steel ingot, with wind driven generator principal shaft steel ingot 11 greatly upside down, be erected on the round turntable 8, erect revolution by the rotation drive wind driven generator principal shaft steel ingot 11 of round turntable 8, thereby be implemented in heating on one side in the process furnace, setting is on one side rotated, and reaches to be heated evenly.By to the increasing and shorten of burner hearth, erect and place to adapt to wind driven generator principal shaft steel ingot 11.
As improvement of the present invention: the diameter of described round turntable 8 is 130cm, with the diameter at butt end of the wind driven generator principal shaft steel ingot 11 that adapts to maximum specification; The thickness of round turntable 8 is 50cm, with furnace bottom 5 flame retardant coating consistency of thickness, its axle 81 is a steel column, diameter is 100cm, weight with energy load-bearing wind electricity machine main shaft steel ingot, its length of 81 is 80cm, extend in the bottom space of furnace bottom 5, the fixing upper support disk 82 in the bottom of axle 81, support disk 82 is stuck in the circular groove of steel base 83, circular groove bottom at steel base 83 is provided with circular slideway, steel ball 84 on arranging in circular slideway can reduce rotary resistance under the load-bearing state, keeps stable rotation, on axle 81, be provided with gear 85, by transmission chain 86 transmission that is connected with the driving toothed gear 10 of slowspeed machine 9, the rotation of slowspeed machine 9 can drive the rotation of axle 81, the rotation of axle 81 just drives the rotation of round turntable 8, erects revolution thereby drive wind driven generator principal shaft steel ingot 11.
Described slowspeed machine 9 is arranged on the worktable of the process furnace outside, like this, slowspeed machine 9 turns round in the environment that is not heated, can improve the work-ing life of slowspeed machine 9, the velocity of rotation of slowspeed machine 9 is 0.1 rev/min, the rotating speed that drives round turntable 8 is 0.1 rev/min, can realize speed governing by wheel box.
Described wind driven generator principal shaft steel ingot 11 in 630 ℃ the process furnace of packing under the room temperature, is incubated 3 hours, with per hour 75 ℃ heat-up rate heating, be warming up to 845 ℃ then, be incubated 5 hours again, be warming up to 1220 ℃ again, adopt the special-purpose fork truck that matches with it to come out of the stove.
With existing process furnace contrast, heat a wind driven generator principal shaft steel ingot equally, two sections soaking times have on average shortened 7 hours respectively and 9 hours, finish a stove, and total time has on average shortened 16 hours.And the wind driven generator principal shaft steel ingot of heating is fit to forge requirement.
This wind driven generator principal shaft steel ingot is erect the structure of rotary furnace with embodiment 1.When heating wind driven generator principal shaft steel ingot, in 650 ℃ the process furnace of under room temperature, packing into, be incubated 3 hours, with per hour 70 ℃ heat-up rate heating, be warming up to 860 ℃ then, be incubated 4 hours again, be warming up to 1240 ℃ again, adopt the special-purpose fork truck that matches with it to come out of the stove.
With existing process furnace contrast, heat a wind driven generator principal shaft steel ingot equally, two sections soaking times have on average shortened 7 hours respectively and 10 hours, finish a stove, and total time has on average shortened 17 hours.And the wind driven generator principal shaft steel ingot of heating is fit to forge requirement.
Embodiment 3
This wind driven generator principal shaft steel ingot is erect the structure of rotary furnace with embodiment 1.When heating wind driven generator principal shaft steel ingot, in 620 ℃ the process furnace of under room temperature, packing into, be incubated 3 hours, with per hour 80 ℃ heat-up rate heating, be warming up to 830 ℃ then, be incubated 7 hours again, be warming up to 1200 ℃ again, adopt the special-purpose fork truck that matches with it to come out of the stove.
With existing process furnace contrast, heat a wind driven generator principal shaft steel ingot equally, two sections soaking times have on average all shortened 7 hours respectively, finish a stove, and total time has on average shortened 14 hours.And the wind driven generator principal shaft steel ingot of heating is fit to forge requirement.
Claims (4)
1. a wind driven generator principal shaft steel ingot is erect rotary furnace, comprise left furnace wall (1), right furnace wall (2), back furnace wall (3), furnace wall (4), top, furnace bottom (5) and fire door (6), the internal layer of furnace wall is equipped with thermal insulation layer, furnace bottom (5) is a fire brick layer, bottom at left furnace wall (1) and right furnace wall (2) is provided with coal gas burner (7), it is characterized in that: be provided with the round turntable (8) that refractory materials is made at the middle part of furnace bottom (5), furnace wall (1), a left side, the inner length of right furnace wall (2) is 350cm, internal height is 450cm, the internal height of back furnace wall (3) is 450cm, and inner width is 350cm.
2. wind driven generator principal shaft steel ingot according to claim 1 is erect rotary furnace, and the diameter that it is characterized in that described round turntable (8) is 130cm; The thickness of round turntable (8) is 50cm, with furnace bottom (5) flame retardant coating consistency of thickness, its axle (81) is a steel column, diameter is 100cm, the length of its (81) is 80cm, extend in the bottom space of furnace bottom (5), the fixing upper support disk (82) in the bottom of axle (81), support disk (82) is stuck in the circular groove of steel base (83), circular groove bottom at steel base (83) is provided with circular slideway, steel ball (84) on arranging in circular slideway is provided with gear (85) on axle (81), by transmission chain (86) transmission that is connected with the driving toothed gear (10) of slowspeed machine (9).
3. wind driven generator principal shaft steel ingot according to claim 2 is erect rotary furnace, it is characterized in that described slowspeed machine (9) is arranged on the worktable of the process furnace outside, the velocity of rotation of slowspeed machine (9) is 0.1 rev/min, and the rotating speed that drives round turntable (8) is 0.1 rev/min.
4. wind driven generator principal shaft steel ingot according to claim 1 is erect rotary furnace, it is characterized in that described wind driven generator principal shaft steel ingot, when under room temperature, packing in 620 ℃-650 ℃ the process furnace, need insulation earlier 3 hours, with per hour 60 ℃-80 ℃ heat-up rate heating, be warming up to 830 ℃-860 ℃ then, be incubated 3.5-7 hour again, be warming up to 1200 ℃-1240 ℃ again, adopt the special-purpose fork truck that matches with it to come out of the stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110102303A CN102181624B (en) | 2011-04-23 | 2011-04-23 | Vertical rotary heating furnace of main shaft steel ingot for wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110102303A CN102181624B (en) | 2011-04-23 | 2011-04-23 | Vertical rotary heating furnace of main shaft steel ingot for wind driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102181624A true CN102181624A (en) | 2011-09-14 |
| CN102181624B CN102181624B (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110102303A Active CN102181624B (en) | 2011-04-23 | 2011-04-23 | Vertical rotary heating furnace of main shaft steel ingot for wind driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506242A (en) * | 2015-12-17 | 2016-04-20 | 刘超 | Quenching and heating mold for precision steel balls |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4763880A (en) * | 1987-04-03 | 1988-08-16 | Holcroft/Loftus Inc. | Rotary hearth multi-chamber, multi-purpose furnace system |
| CN1400318A (en) * | 2001-08-08 | 2003-03-05 | 北京英纳超导技术有限公司 | Heat treatment furnace and its temp.-controlling method |
| CN202047108U (en) * | 2011-04-23 | 2011-11-23 | 山东莱芜金雷风电科技股份有限公司 | Rotary heating furnace for vertical steel ingots of wind generator spindle |
-
2011
- 2011-04-23 CN CN201110102303A patent/CN102181624B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4763880A (en) * | 1987-04-03 | 1988-08-16 | Holcroft/Loftus Inc. | Rotary hearth multi-chamber, multi-purpose furnace system |
| CN1400318A (en) * | 2001-08-08 | 2003-03-05 | 北京英纳超导技术有限公司 | Heat treatment furnace and its temp.-controlling method |
| CN202047108U (en) * | 2011-04-23 | 2011-11-23 | 山东莱芜金雷风电科技股份有限公司 | Rotary heating furnace for vertical steel ingots of wind generator spindle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506242A (en) * | 2015-12-17 | 2016-04-20 | 刘超 | Quenching and heating mold for precision steel balls |
| CN105506242B (en) * | 2015-12-17 | 2017-08-01 | 李舒华 | A kind of accurate steel balls Quench heating mould |
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| Publication number | Publication date |
|---|---|
| CN102181624B (en) | 2012-09-19 |
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Address after: 271105 No.18, Shuangyuan street, Gangcheng District, Jinan City, Shandong Province Patentee after: Jinlei Technology Co., Ltd. Address before: 271105, Shandong Province, Laiwu City, steel city, Li Zhen Zhen Zhang Patentee before: Shandong Laiwu Jinlei Wind Power Technology Co., Ltd. |
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