CN101158552B - Replacing method of light ash calcine furnace rolling ring - Google Patents
Replacing method of light ash calcine furnace rolling ring Download PDFInfo
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- CN101158552B CN101158552B CN2007101395677A CN200710139567A CN101158552B CN 101158552 B CN101158552 B CN 101158552B CN 2007101395677 A CN2007101395677 A CN 2007101395677A CN 200710139567 A CN200710139567 A CN 200710139567A CN 101158552 B CN101158552 B CN 101158552B
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Abstract
A light ash calciner race ring replacement method comprises a light ash calciner furnace body consisting of a feeding packing auger, a free end race ring, a gear ring and a fixed end race ring. The replacement method is that the feeding packing auger is extracted from the furnace body and the free end race ring, a gear ring base and the fixed end race ring are sheathed on a furnace end. The structure of the gear ring base is that a plurality of groups of gear ring base plates are retrofitted between the gear ring and the furnace body; the gear ring base plates are welded directly on the furnace body; the gear ring base is adjusted through a drill key and an alignment of a big gear ring is conducted by the gear ring base. The invention has the advantages that the adoption of the technical scheme ensures that the average time for replacing a race ring is 15 days when a monomer of the light ash calciner is overhauled; after the overhaul, the running of the light ash calciner is steady; not only the replacement of the race ring and the gear ring in the future does become convenient by remodeling the race ring, a race ring base plate, the gear ring and the gear ring base plate, but alsothe service lives of the race ring, the gear ring, a carrying wheel and the calciner furnace body are greatly prolonged.
Description
Technical field
The present invention relates to a kind of replacing method of light ash calcine furnace rolling ring.
Background technology
The total weight of light grey calcining furnace body is to pass to two groups of support rollers by rolling ring, therefore rolling ring and support roller all will bear very big contact stress, friction that running produces and pressure produce rolling ring and destroy, the geometric accuracy that mainly is the surface is destroyed, long-term high-load operation has more aggravated the wearing and tearing of rolling ring periphery, because the effect of big extrusion stress in rotating, make the rolling ring outer round surface the horizontal indenture of large tracts of land pit and parallel body of heater axis occur, serious vibrations can take place when body of heater turns round, if untimely maintenance will shorten dramatically the service life of bearing of conveyor idler.Usually mainly be the way of cam-turning, turning is carried out in rolling ring, though reduced vibrations, but also with low rolling ring case hardness, having aggravated the wearing and tearing of rolling ring. each turning all needs rotating speed to the reduction body of heater to reach the turning effect, the body of heater rated speed is 3.8 rev/mins, speed drop to 2.2 rev/min during turning, output is 42 tons/hour under the rated speed, reduce to 24 tons/hour during turning, each turning on average needed more than 72 hours, and will pass through 6-9 turning every year, rolling ring thickness reduces to 180 millimeters of less thaies by 225 millimeters that design, and productivity effect reduces simultaneously.In addition because for a long time vibration running, make that rolling ring backing plate weld bond place often snaps, the vapour diameter of axle is to the sharp increase of beating, the reduction in vapour axle service life, cause the body of heater cracking, can only repair welding to it, and weld seam is through multiple welding, the mother metal tissue goes to pot, and can not weld again.If before the steam leakage shutdown maintenance, need earlier the clout water that can not pour out in the stove to be cleaned to wash out, nearly 40 tons, shutdown maintenance approximately will have a strong impact on high and stable yields with about 8 hours.
Also has a kind of method that light grey calcining furnace is carried out the monomer overhaul.To the effect that change free end, stiff end rolling ring and bull gear, gear ring base and vapour axle. wherein the rolling ring replacing is maximum difficult point.The method of changing of the same trade at home is: feeding packing auger is extracted out from body of heater, from burner with free end rolling ring suit upper furnace body, when the stiff end rolling ring is changed,, bull gear needs because in the middle of two rolling rings, changing rolling ring, gear ring base must be removed, owing to limited to by field condition, can't carry out centering, turning according to former design, so that can't change gear ring base, thereby consider that the stiff end rolling ring is from stove tail suit upper furnace body with the steam chest overall pulling down.The advantage of this way is the free end rolling ring, and the stiff end rolling ring is easy to install.But drawback is more obvious, with the steam chest overall pulling down is exactly that steam chest and main heating tube are disconnected, it is very big to remove workload, during recovery since heating tube be to be welded on the steam chest at the installation initial stage by expanded and welded tube joint, heating tube must have welding deformation, and the metal mother metal organizes also destroyed to be unfavorable for welding once more, even if can weld, time between overhauls(TBO) is longer, and the general overhaul duration is 45 days.
Summary of the invention
Goal of the invention of the present invention is to overcome background technology mounting teeth ring support and is difficult to centering, remove steam chest and recovery time long deficiency, a kind of convenience, simple and can improve rolling ring, gear ring, carry wheel and calcining furnace body service life, the replacing method of the light ash calcine furnace rolling ring that the time between overhauls(TBO) is short on the back is provided.
Realize the foregoing invention purpose by the following technical solutions: a kind of replacing method of light ash calcine furnace rolling ring, comprise the light grey calcining furnace body of mainly forming by feeding packing auger, free end rolling ring, gear ring, stiff end rolling ring, described gear ring below is provided with gear ring base, the structure of this gear ring base is to add group gear ring backing plate in the middle of gear ring and body of heater, and directly be welded on the gear ring backing plate on the body of heater, by drift gear ring base is adjusted, bull gear is carried out centering; Described replacing method is:
A, elder generation extract feeding packing auger out from body of heater;
B, outside stove, rolling ring, gear ring and body of heater are implemented to support;
C, the rolling ring of dismounting free end, gear ring and transmission system;
D, the rolling ring of suit stiff end and gear ring supporting seat;
E, the rolling ring of installation free end;
F, the rolling ring of dismounting stiff end;
G, install and fix the end rolling ring;
H, installation gear ring and transmission device;
I, dismounting body of heater support;
J, maintenance feed system, the charging housing resets;
K, essence are looked for gear ring.
Adopt technique scheme, compared with prior art, the present invention is to the monomer overhaul of light grey calcining furnace, and on average the replacing time is 15 days, operates steadily after the light grey stove overhaul.Remodeling by rolling ring, rolling ring backing plate and gear ring, gear ring backing plate not only provides convenience for the replacing of rolling ring later on and gear ring, the service life of also having improved rolling ring, gear ring greatly, having carried wheel and calcining furnace body on the back.The improvement of light ash calcine furnace rolling ring, gear ring and the replacing of vapour axle and rolling ring backing plate, gear ring backing structure, the life cycle that has not only prolonged calcining furnace, annual recondition expense of saving more than 100 ten thousand yuan has also been made contribution for stable and high yields.
Description of drawings
Fig. 1 is a furnace binding schematic diagram of the present invention.
Fig. 2 is a rolling ring backing plate scheme of installation of the present invention.
Fig. 3 is a gear ring base structural representation of the present invention.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
A kind of replacing method of light ash calcine furnace rolling ring, referring to accompanying drawing 1-3, its body of heater 3 is made up of feeding packing auger 1, free end rolling ring 2, gear ring 4, stiff end rolling ring 5 etc., its replacing method is: feeding packing auger 1 is extracted out from body of heater 3, from burner suit free end rolling ring 2, gear ring base 9 and stiff end rolling ring 5.The structure of gear ring base 9 is seen accompanying drawing 3, between gear ring bearing 11 and gear ring base 9 drift 10 is set, and fastening with stud nut 8.In the middle of gear ring 4 and body of heater 3, install six groups of gear ring backing plates additional, the gear ring backing plate directly is welded on the body of heater 3, thereby regulate the thickness of drift 10 and gear ring base 9 is carried out centering gear ring 4 is carried out centering, guarantee transmission accuracy by regulating stud nut 8.
Rolling ring of the present invention is made up of free end rolling ring 2 and stiff end rolling ring 5, and two-layer wedge shape parallels 11,12 upper and lower settings pads are between rolling ring 5 and body of heater 3.
Change method step embodiment:
1, removes parts such as charging reductor, string alkali stream pipe, incoming flow pipe pipe nipple, the charging housing is moved 1 meter.
2, in stove five places such as rolling ring 5, gear ring 4 and body of heater 3 stiffening rings are implemented the rice font and support, support and adopt Φ 45 steel pipes, the M shape structure is propped up into 8 steel pipes in each cross section, and with body of heater 3 spot welding, body of heater is out of shape when preventing to construct.
3, remove free end rolling ring 2.
(1) at free end rolling ring 2 place, with two 100T jack stands of body of heater 3 usefulness 30mm.At free end rolling ring one side mounting bracket, and be fixed on the body of heater 3 with jack, after treating that its underpart pads with seat supports, steel plate, two jack of free end rolling ring one side top stove are slowly fallen after rise, after observing free end rolling ring opposite side stent support body of heater no problem, remove jack, the 10T overhead traveling crane cooperates dismounting to carry wheel on the back in the factory building.
(2) free end rolling ring 2 Lower Halves are supported, after the first half is sling with overhead traveling crane, with gouge rolling ring level plane is opened respectively in the left and right sides, and it is removed.
(3) select to keep 4 surface quality better and be mutually 90 ° reservation parallels, exclude all the other 20 blocks of parallels, note not damaging body of heater when digging.The polishing of free end rolling ring place body of heater is clean, require difference in height≤0.5mm, the parallels of 4 reservations also will polish smooth.
(4) free end rolling ring place body of heater dye penetrant inspection, defect processing.
4, remove gear ring 4, transmission system
(1) this operation and free end rolling ring 2 are removed and are carried out simultaneously.
(2) remove the gear ring cover.
(3) remove main gear reducer, main motor.
(4) remove gear ring, cut off dust block board, exclude gear ring base, note not damaging body of heater.
(5) body of heater requires difference in height≤0.5mm to smooth near the polishing gear ring base 9.
(6) check the main transmission basis, if any issue handling.
5, suit stiff end rolling ring 5 and gear ring supporting seat 11
(1) checks body of heater, the high point in body of heater surface is removed.
(2) utilize overhead traveling crane, lead chain, jack and successively stiff end rolling ring 5, gear ring supporting seat 11 be sleeved on free end rolling ring 2 positions.
(3) in stiff end rolling ring one side top stove and support, remove opposite side top furnace cradle.
(4) utilize overhead traveling crane, lead chain and respectively stiff end rolling ring 5 and gear ring supporting seat 11 slowly winched to the stove tail, be placed between gear ring 4 and the stiff end rolling ring 5 stiff end rolling ring 5 support fixed support.
(5) the distolateral top furnace cradle that affranchises is removed the opposite side support.
6, free end rolling ring 2 is installed
(1) is reference data with 4 backing plates and the original installation data that keeps, on body of heater, draws the rolling ring center line, require position error≤1mm according to the drawing specification requirement.
(2) locating piece and razor-edge liner 12 are installed, before installing locating piece and backing plate are wanted scrutiny, conscientious reconditioning is guaranteed the applying of backing plate and body of heater closely.Want full weld with body of heater around the backing plate, note welding sequence and welding parameter during welding, avoid the body of heater distortion, note also exhaust during welding.
(3) polishing backing plate welding slag utilizes overhead traveling crane, leads chain, jack is on the free end rolling ring suit rolling ring backing plate, makes it to reset.
(4) razor-edge liner 12 is installed,, is detected rolling ring internal diameter and 3 gaps of body of heater thick centering is carried out in free end rolling ring 2,8 groups of wheel chock plates of centering qualified back spot welding symmetric position by adjusting razor-edge liner 12.
(5) wheel 6 is carried in installation on the back, and the attention direction is not adorned instead, body of heater 3 is fallen carried on the back on the wheel 6 then, removes the top furnace cradle, and fixedly body of heater prevents that gear wheel dismounting rear furnace body from gliding.
7, stiff end rolling ring 5 is removed
(1) could remove the stiff end rolling ring after having only free end rolling ring 2 to install.
(2) remove gear wheel, carry wheel on the back.
Methods such as (3) stiff end rolling ring 5 dismountings, backing plate dismounting, body of heater polishing, body of heater flaw detection, requirement are identical with free end rolling ring 2, can consult and carry out.
8, install and fix end rolling ring 5 steps, method requires identical with free end rolling ring 2.
9, install and fix end and carry wheel, gear wheel on the back, remove burner body of heater fixture.
10, gear ring and main drive are installed
(1) determines on body of heater 3, to rule behind gear ring supporting seat 11 positions with reference to specification requirement and original installation site, 6 bearings are welded on the body of heater, require full weld, guarantee welding quality.This operation can be implemented when the free end rolling ring is installed.
(2) gear ring supporting seat 11 and gear ring 4 are assembled, be sleeved on 6 bearings.
(3) drift 10 is installed, gear ring 4 is carried out thick centering to qualified with the moving body of heater of hoist engine dish, drift 10 is fastening, remove hoist engine.
(4) 6 antirotation keys of welding.
(5) main gear reducer is installed, thick centering is checked pinion and gear ring engagement situation.
11,2 body of heater stiffening rings of welding are installed.
12, remove 5 bodies of heater supports in the stove respectively.This operation can be with the installation synchronization implementation of rolling ring, gear ring, stiffening ring.
13, maintenance feed system, the charging housing resets.
14, slow transmission pan burner is checked body of heater vibration situation.After treating that body of heater running a few hours shape is recovered,, respectively essence is carried out in free end, stiff end rolling ring and looks for by the razor-edge liner 12 of accurate adjustment rolling ring, make its radially, axial runout meets specification requirement.Then with 12 dozens of realities of rolling ring razor-edge liner, weld, also welding block is installed.
15, essence is looked for gear ring.
(1) have only the rolling ring essence look for qualified after, could essence look for gear ring.
(2) slow transmission pan burner by adjusting drift, is jumped the jumping of gear ring end, footpath and met specification requirement, and is then that drift is fastening, welds.
(3) adjust main gear reducer, make drive pinion and gear ring engagement situation meet specification requirement.
16, main motor is installed, and centering is to meeting specification requirement.
17, test run, adjustment and examination.
Claims (1)
1. the replacing method of a light ash calcine furnace rolling ring, comprise the light grey calcining furnace body of mainly forming by feeding packing auger, free end rolling ring, gear ring, stiff end rolling ring, it is characterized in that, described gear ring below is provided with gear ring base, the structure of this gear ring base is to add group gear ring backing plate in the middle of gear ring and body of heater, and the gear ring backing plate directly is welded on the body of heater, by drift gear ring base is adjusted, bull gear is carried out centering; Described replacing method is:
A, elder generation extract feeding packing auger out from body of heater;
B, outside stove, rolling ring, gear ring and body of heater are implemented to support;
C, the rolling ring of dismounting free end, gear ring and transmission system;
D, the rolling ring of suit stiff end and gear ring supporting seat;
E, the rolling ring of installation free end;
F, the rolling ring of dismounting stiff end;
G, install and fix the end rolling ring;
H, installation gear ring and transmission device;
I, dismounting body of heater support;
J, maintenance feed system, the charging housing resets;
K, essence are looked for gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101395677A CN101158552B (en) | 2007-10-12 | 2007-10-12 | Replacing method of light ash calcine furnace rolling ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101395677A CN101158552B (en) | 2007-10-12 | 2007-10-12 | Replacing method of light ash calcine furnace rolling ring |
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| Publication Number | Publication Date |
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| CN101158552A CN101158552A (en) | 2008-04-09 |
| CN101158552B true CN101158552B (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101395677A Active CN101158552B (en) | 2007-10-12 | 2007-10-12 | Replacing method of light ash calcine furnace rolling ring |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103042233A (en) * | 2012-12-06 | 2013-04-17 | 湖北双环科技股份有限公司 | Method for quickly repairing surface radial deformation of large rolling ring of steam calcinator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040624U (en) * | 1988-11-23 | 1989-07-05 | 江苏省化工机械研究所 | Soda steam calciner |
| GB2294925A (en) * | 1994-11-11 | 1996-05-15 | Bayer Ag | Production of heavy soda and its use |
| CN1122771A (en) * | 1994-11-08 | 1996-05-22 | 渤海化工(集团)股份有限公司天津碱厂 | Improvement of steam calcining furnace and auxiliary equipment thereof |
| US5665327A (en) * | 1994-07-19 | 1997-09-09 | Solvay (Societe Anonyme) | Process for the manufacture of anhydrous sodium carbonate |
-
2007
- 2007-10-12 CN CN2007101395677A patent/CN101158552B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040624U (en) * | 1988-11-23 | 1989-07-05 | 江苏省化工机械研究所 | Soda steam calciner |
| US5665327A (en) * | 1994-07-19 | 1997-09-09 | Solvay (Societe Anonyme) | Process for the manufacture of anhydrous sodium carbonate |
| CN1122771A (en) * | 1994-11-08 | 1996-05-22 | 渤海化工(集团)股份有限公司天津碱厂 | Improvement of steam calcining furnace and auxiliary equipment thereof |
| GB2294925A (en) * | 1994-11-11 | 1996-05-15 | Bayer Ag | Production of heavy soda and its use |
Non-Patent Citations (6)
| Title |
|---|
| 姜勇.á3. 0 ×30 m 轻灰煅烧炉设计及应用的改进.硫磷设计与粉体工程 3.2000,(3),8-16. |
| 姜勇.á3. 0 ×30 m 轻灰煅烧炉设计及应用的改进.硫磷设计与粉体工程 3.2000,(3),8-16. * |
| 李友声.轻灰炉传动齿轮副设计中几个值得注意得问题.纯碱工业 1.1994,(1),25-28. |
| 李友声.轻灰炉传动齿轮副设计中几个值得注意得问题.纯碱工业 1.1994,(1),25-28. * |
| 葛宜文 孟庆华.蒸汽煅烧炉滚圈焊接及更换.纯碱工业 6.2005,(6),36-38. |
| 葛宜文 孟庆华.蒸汽煅烧炉滚圈焊接及更换.纯碱工业 6.2005,(6),36-38. * |
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| CN101158552A (en) | 2008-04-09 |
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