CN203835794U - Steel-making ID converter gas fan rotor set - Google Patents
Steel-making ID converter gas fan rotor set Download PDFInfo
- Publication number
- CN203835794U CN203835794U CN201420049196.9U CN201420049196U CN203835794U CN 203835794 U CN203835794 U CN 203835794U CN 201420049196 U CN201420049196 U CN 201420049196U CN 203835794 U CN203835794 U CN 203835794U
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- steel
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Abstract
The embodiment of the utility model discloses a steel-making ID converter gas fan rotor set. The steel-making ID converter gas fan rotor set comprises a main shaft and an impeller set arranged on the main shaft. The impeller set comprises a front plate, a middle plate and blades, wherein the blades are arranged between the front plate and the middle plate. The front plate is provided with a front plate reinforcing ring. The thickness of an inlet ring is 12 mm. The middle plate of the impeller set is connected with the main shaft through a locking bolt and a hinge bolt. The inlet ring is integrally formed by adopting a forge piece, and the forge piece is made of alloy steel 20CrMnMo. The front plate is made of high-strength welding structural steel HG785, the thickness of the front plate is 14 mm, and the thickness of the front plate reinforcing ring is 14 mm. The locking bolt of the impeller set and the main shaft is a bolt M24, and the hinge bolt for locating is a hinge bolt M24. According to the steel-making ID converter gas fan rotor set, the structural strength is improved, and the service life is prolonged.
Description
Technical field
The utility model relates to fan rotor group field, relates in particular to a kind of steel-making ID coal gas of converter fan rotor group.
Background technique
The rotor set of this blower fan is all by German import all the time, and cost is high, and working life is short, and the total production cost of invisible raising Liao Gai factory has brought huge pressure to cost control and production safety, and the particular problem of existence is as follows:
1. the import circle of former German imported rotors group is that steel plate structure moulding process is press mold.The member of press mold moulding must be formed by groove opening welding after the shroud splicing of 3 or polylith, although the welding consumables intensity adopting must be higher than mother metal, due to applying working condition badly and in converter gas, to contain corrosive gas (be mainly a small amount of SO
2, CO, CO
2, N
2and water vapour) serious corrosion of butt welded seam; The thickness of import circle that Germany adopts is 10mm and this place show that through my company's finite element analysis the stress at this place is the position of whole impeller sets maximum; In sum, the rotor set of Germany easily corrosion and wearing and tearing of import circle place in same stove labour under complicated operating mode, and the too low cracking that easily causes of the rigidity safety coefficient of import circle.
2. the stiffening ring thickness of former German imported rotors group both sides shroud and shroud is 12mm, has moved less than a stove labour, and many places cracking phenomena occurs, and makes impeller distortion, causes barycenter to be offset, and the dynamic balancing of impeller is destroyed, and when operation, vibration values is overproof.Need frequent reparation.
3. the lock bolt of impeller sets and main shaft and the hinged bolts of location were 8.8 grades of M20(intensity originally), because the external diameter of rotor set is excessive, rotating speed is too high, and the shearing stress of generation is excessive.Operation causes bolt cross section upper stress concentrate and can produce micro-vibration for a long time.
Model utility content
The utility model embodiment technical problem to be solved is, provides a kind of structural strength to increase, and improves the steel-making ID coal gas of converter fan rotor group in working life.
Described steel-making ID coal gas of converter fan rotor group, comprise main shaft and be arranged on the impeller sets on described main shaft, described impeller sets comprises shroud, mid-game and blade, described blade is arranged between described shroud and mid-game, on described shroud, be also provided with shroud stiffening ring, impeller central disc is connected with main shaft with articulation bolt by lock bolt, and described import circle adopts forging global formation, described forging is alloyed steel 20CrMnMo, and described shroud adopts HG785 high-strength welding structure steel.
The thickness of described import circle is 12mm.
The thickness of described shroud and shroud stiffening ring is 14mm.
Bolt and articulation bolt that the lock bolt of described impeller sets and main shaft and the hinged bolts of location are M24.
Implement the utility model embodiment, there is following beneficial effect:
The utility model embodiment import circle adopts forging (alloyed steel 20CrMnMo) thickness to change 12mm into by former 10mm, after global formation, process again, the suffering that does not so have weld seam wearing and tearing and split, and be far away higher than sheet material with regard to the intensity of performance forging of material itself and the performance of corrosion-resistant aspect; The material of shroud changes HG785 into by original S690QL, and intensity has been strengthened a grade; The thickness of shroud and shroud stiffening ring changes 14mm into by former 12mm, and intensity and the rigidity of strengthening shroud make it not easy to crack; The bolt and the articulation bolt that for the sake of security the bolt of existing rotor set and articulation bolt are changed to M24, intensity is 10.9 grades, structural strength increases, and has improved working life.
Brief description of the drawings
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is the utility model Figure 1A-A sectional view.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail.
The utility model embodiment makes steel ID coal gas of converter fan rotor group, comprise main shaft 1 and be arranged on the impeller sets 2 on main shaft 1, impeller sets 2 comprises shroud 3, mid-game 4 and blade 5, blade 5 is arranged between shroud 3 and mid-game 4, on shroud 3, be also provided with shroud stiffening ring 6, the thickness of import circle 7 is 12mm, mid-game 4 is connected with main shaft 1 with articulation bolt by lock bolt, import circle 7 adopts forging global formation, forging is alloyed steel 20CrMnMo, shroud adopts HG785 high-strength welding structure steel, the thickness of shroud and shroud stiffening ring is 14mm, bolt and articulation bolt that the lock bolt of impeller sets and main shaft and the hinged bolts of location are M24.
The utility model embodiment import circle adopts forging (alloyed steel 20CrMnMo) thickness to change 12mm into by former 10mm, after global formation, process again, the suffering that does not so have weld seam wearing and tearing and split, and be far away higher than sheet material with regard to the intensity of performance forging of material itself and the performance of corrosion-resistant aspect; The material of shroud changes HG785 into by original S690QL, and intensity has been strengthened a grade; The thickness of shroud and shroud stiffening ring changes 14mm into by former 12mm, and intensity and the rigidity of strengthening shroud make it not easy to crack; The bolt and the articulation bolt that for the sake of security the bolt of existing rotor set and articulation bolt are changed to M24, intensity is 10.9 grades, structural strength increases, and has improved working life.
Above disclosed is only a kind of preferred embodiment of the utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim, still belongs to the scope that the utility model is contained.
Claims (4)
1. a steel-making ID coal gas of converter fan rotor group, comprise main shaft and be arranged on the impeller sets on described main shaft, described impeller sets comprises shroud, mid-game and blade, described blade is arranged between described shroud and mid-game, on described shroud, be also provided with shroud stiffening ring, impeller central disc is connected with main shaft with articulation bolt by lock bolt, it is characterized in that, import circle adopts forging global formation, described forging is alloyed steel 20CrMnMo, and described shroud adopts HG785 high-strength welding structure steel.
2. steel-making ID coal gas of converter fan rotor group according to claim 1, is characterized in that, the thickness of described import circle is 12mm.
3. steel-making ID coal gas of converter fan rotor group according to claim 1, is characterized in that, the thickness of described shroud and shroud stiffening ring is 14mm.
4. steel-making ID coal gas of converter fan rotor group according to claim 1, is characterized in that bolt and articulation bolt that the lock bolt of described impeller sets and main shaft and the hinged bolts of location are M24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049196.9U CN203835794U (en) | 2014-01-26 | 2014-01-26 | Steel-making ID converter gas fan rotor set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049196.9U CN203835794U (en) | 2014-01-26 | 2014-01-26 | Steel-making ID converter gas fan rotor set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835794U true CN203835794U (en) | 2014-09-17 |
Family
ID=51513642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420049196.9U Expired - Fee Related CN203835794U (en) | 2014-01-26 | 2014-01-26 | Steel-making ID converter gas fan rotor set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835794U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963884A (en) * | 2015-07-30 | 2015-10-07 | 南通大通宝富风机有限公司 | Main shaft structure resistant to corrosion |
-
2014
- 2014-01-26 CN CN201420049196.9U patent/CN203835794U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963884A (en) * | 2015-07-30 | 2015-10-07 | 南通大通宝富风机有限公司 | Main shaft structure resistant to corrosion |
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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: 20140917 Termination date: 20170126 |