CN108728605B - Converter trunnion ring replacing method - Google Patents
Converter trunnion ring replacing method Download PDFInfo
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- CN108728605B CN108728605B CN201810959735.5A CN201810959735A CN108728605B CN 108728605 B CN108728605 B CN 108728605B CN 201810959735 A CN201810959735 A CN 201810959735A CN 108728605 B CN108728605 B CN 108728605B
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- converter
- trunnion ring
- ring
- converter trunnion
- rotating
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for replacing a converter trunnion ring, relates to the technical field of equipment installation and maintenance, and provides a method for replacing a converter trunnion ring, which can move the converter trunnion ring in and out from a narrow position. The method for replacing the converter trunnion ring comprises the following steps: A. a rotating rope is arranged right above the converter trunnion ring; B. hoisting the converter backing ring by utilizing hoisting equipment; C. connecting a rotating rope with a converter backing ring; in the circumferential direction of the converter backing ring, the rotating rope is inclined; D. descending the hoisting equipment to enable the rotary rope to suspend the converter trunnion ring; the rotating rope automatically swings back to drive the converter backing ring to rotate; E. repeating the steps until the converter trunnion ring rotates to pass between two factory pillars in front of the converter trunnion ring; F. removing the converter backing ring from between the two factory pillars; G. moving a new converter trunnion ring in between the two factory pillars; H. by adopting the method, the new converter trunnion ring is reversely rotated to the installation direction; I. and (5) putting down the converter trunnion ring.
Description
Technical Field
The invention relates to the technical field of equipment installation and maintenance, in particular to a converter trunnion ring replacing method.
Background
The volume and the mass of the trunnion ring of the large and medium-sized converters are large, for example, the diameter of the trunnion ring of the converter with the capacity of 210T is about 10m, the height of the trunnion ring is about 2.5m, and the mass of the trunnion ring is about 160T; the converter trunnion ring of the converter with the capacity of 300T is larger, and the mass of the trunnion ring is close to 300T. The huge hoisting quality and hoisting height need to use hoisting equipment with large hoisting capacity, and some reasonable hoisting methods need to be adopted. Generally, the middle and small sized converters are hoisted by a forward loading method, and the middle and large sized converters are also hoisted by a reverse loading method or a hydraulic jacking moving-in method due to the limitation of hoisting mechanical capacity, factory conditions and the like.
The applicant has encountered the following problems during the replacement of a certain trunnion ring: as shown in figure 1, the length of the outer edge of the trunnion ring trunnion of the converter trunnion ring is greater than the distance between two factory-square upright posts positioned in front of the trunnion ring, so that the converter trunnion ring cannot be directly moved out. The method is limited by factory conditions, a factory frame and equipment need to be dismantled by applying the traditional installation technology, and the converter trunnion ring is recovered after being replaced, so that the method has the advantages of huge engineering quantity, high cost, time and labor waste and difficulty in implementation.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided is a method for replacing a converter trunnion ring, which can move the converter trunnion ring from a narrow place into and out of the converter trunnion ring.
The technical scheme adopted for solving the problems is as follows: the method for replacing the converter trunnion ring comprises the following steps:
A. at least three rotating ropes with fixed upper ends are arranged right above the converter trunnion ring;
B. connecting a hoisting rope of hoisting equipment above the converter trunnion ring with the converter trunnion ring, and hoisting the converter trunnion ring by using the hoisting equipment;
C. connecting a rotating rope with a converter backing ring; in the circumferential direction of the converter backing ring, the rotating ropes are inclined, and the inclined direction and the inclined amount of each rotating rope are the same;
D. descending the hoisting rope to make the rotating rope suspend the converter trunnion ring; in the circumferential direction of the converter backing ring, the rotating rope automatically swings back to drive the converter backing ring to rotate;
E. lifting a converter supporting ring by a small amount of lifting ropes, moving the rotating ropes to enable the rotating ropes to incline again, then descending the lifting ropes, and automatically swinging back the rotating ropes again to drive the converter supporting ring to rotate; repeating the steps until the converter trunnion ring can pass through between two factory pillars in front of the converter trunnion ring;
F. removing the converter backing ring from between the two factory pillars;
G. moving a new converter trunnion ring in between the two factory pillars;
H. making the new converter backing ring rotate reversely to the installation direction by using the same method from the step B to the step E;
I. and (5) putting down the converter trunnion ring.
Further, the method comprises the following steps: the number of the rotating ropes is four, and the four rotating ropes are uniformly distributed on the circumference by taking the axis of the backing ring of the converter as the center.
The invention has the beneficial effects that: by adopting the method, the converter trunnion ring can move out of and into a narrow place which can not be passed by the method in the prior art, the problem that the converter trunnion ring is limited by factory conditions in replacement is solved, and the method also has the advantages of simple operation, high safety, strong practicability, easy mastering, money and time saving and remarkable economic benefit.
Drawings
FIG. 1 is a schematic view of step C from above;
FIG. 2 is a schematic view in elevation of step C;
FIG. 3 is a schematic view of step D from above;
FIG. 4 is a schematic view of the head-up orientation of step D;
FIG. 5 is a schematic view showing the direction of the trunnion ring of the converter after completion of step E;
FIG. 6 is a schematic view of step F;
labeled as: the device comprises a converter trunnion ring 1, a trunnion ring trunnion 11, hoisting equipment 2, a hoisting rope 21, a rotating rope 3 and a factory pillar 4.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1 to 6: the method for replacing the converter trunnion ring comprises the following steps: A. at least three rotating ropes 3 with fixed upper ends are arranged right above the converter trunnion ring 1; B. connecting a hoisting rope 21 of a hoisting device 2 above the converter trunnion ring 1 with the converter trunnion ring 1, and hoisting the converter trunnion ring 1 by using the hoisting device 2; C. connecting a rotating rope 3 with a converter trunnion ring 1; in the circumferential direction of the converter trunnion ring 1, the rotating ropes 3 are inclined, and the inclination direction and the inclination amount of each rotating rope 3 are the same; D. lowering the hoisting rope 21 to suspend the rotary rope 3 from the converter trunnion ring 1; in the circumferential direction of the converter backing ring 1, the rotating rope 3 automatically swings back to drive the converter backing ring 1 to rotate; E. a small amount of the hoisting ropes 21 are lifted to hoist the converter trunnion ring 1, the rotating ropes 3 are moved to incline again, then the hoisting ropes 21 are lowered, and the rotating ropes 3 automatically swing back again to drive the converter trunnion ring 1 to rotate; repeating the steps until the converter trunnion ring 1 can pass between two factory pillars 4 in front of the converter trunnion ring; F. removing the converter trunnion ring 1 from between the two plant pillars 4; G. moving a new converter trunnion ring 1 in between two factory pillars 4; H. the new converter trunnion ring 1 is reversely rotated to the installation direction by the same method from the step B to the step E; I. and (4) putting down the converter trunnion ring 1.
In the step A, the fixed position of the upper end of the rotating rope 3 has enough strength, and the upper end of the rotating rope 3 can be connected to a girder of a frame of a factory building. The factory building is usually provided with hoisting equipment, and the hoisting equipment 2 can be the existing hoisting equipment in the factory building; or a pulley which is specially arranged on a girder of a frame of a factory building for replacing the converter trunnion ring 1; but also a crane. The core point of the present invention is the rotation of the trunnion ring 1 of the converter, and the translation of the trunnion ring 1 of the converter is the prior art, so the present invention is not described in detail.
The rotating ropes 3 should be able to reliably suspend the converter trunnion ring 1 from swinging up and down, so that the number of rotating ropes 3 is at least three. The number of the rotating ropes 3 is preferably four, and four rotating ropes 3 are uniformly distributed on the circumference by taking the axis of the converter trunnion ring 1 as the center.
Claims (2)
1. The method for replacing the converter trunnion ring is characterized in that: the method comprises the following steps:
A. at least three rotating ropes (3) with fixed upper ends are arranged right above the converter trunnion ring (1);
B. connecting a hoisting rope (21) of a hoisting device (2) above the converter trunnion ring (1) with the converter trunnion ring (1), and hoisting the converter trunnion ring (1) by using the hoisting device (2);
C. connecting the rotating rope (3) with the converter trunnion ring (1); in the circumferential direction of the converter trunnion ring (1), the rotating ropes (3) are inclined, and the inclined direction and the inclined amount of each rotating rope (3) are the same;
D. lowering the hoisting rope (21) to suspend the rotary rope (3) from the converter trunnion ring (1); in the circumferential direction of the converter backing ring (1), the rotating rope (3) automatically swings back to drive the converter backing ring (1) to rotate;
E. a few of lifting converter supporting rings (1) are lifted by the lifting hoisting ropes (21), the rotating ropes (3) are moved to incline again, then the lifting hoisting ropes (21) are descended, and the rotating ropes (3) automatically swing back again to drive the converter supporting rings (1) to rotate; repeating the steps until the converter trunnion ring (1) can pass between two factory pillars (4) in front of the converter trunnion ring;
F. removing the converter trunnion ring (1) from between the two factory pillars (4);
G. moving a new converter trunnion ring (1) in between two factory pillars (4);
H. the new converter trunnion ring (1) is reversely rotated to the installation direction by the same method from the step B to the step E;
I. and (3) putting down the converter trunnion ring (1).
2. The method for replacing a trunnion ring of a converter according to claim 1, wherein: the number of the rotating ropes (3) is four, and the four rotating ropes (3) are uniformly distributed on the circumference by taking the axis of the converter backing ring (1) as the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810959735.5A CN108728605B (en) | 2018-08-20 | 2018-08-20 | Converter trunnion ring replacing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810959735.5A CN108728605B (en) | 2018-08-20 | 2018-08-20 | Converter trunnion ring replacing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108728605A CN108728605A (en) | 2018-11-02 |
| CN108728605B true CN108728605B (en) | 2020-05-05 |
Family
ID=63943073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810959735.5A Active CN108728605B (en) | 2018-08-20 | 2018-08-20 | Converter trunnion ring replacing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108728605B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703640B (en) * | 2012-04-17 | 2014-03-19 | 中国十七冶集团有限公司 | Method of maintenance and lifting for moving section flue at converter mouth |
| CN102816891B (en) * | 2012-08-23 | 2014-02-12 | 中国十七冶集团有限公司 | Hoisting method for overhauling and dismantling vaporization flue fixed at first section of converter |
| CN102864278A (en) * | 2012-10-31 | 2013-01-09 | 中国二十二冶集团有限公司 | method for mounting large-scale converter shell and backing ring |
| CN204824952U (en) * | 2015-05-08 | 2015-12-02 | 中国十九冶集团有限公司 | Water-cooled furnace mouth of converter |
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2018
- 2018-08-20 CN CN201810959735.5A patent/CN108728605B/en active Active
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| Publication number | Publication date |
|---|---|
| CN108728605A (en) | 2018-11-02 |
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