CN115198051A - Method for installing steelmaking converter body - Google Patents
Method for installing steelmaking converter body Download PDFInfo
- Publication number
- CN115198051A CN115198051A CN202210752901.0A CN202210752901A CN115198051A CN 115198051 A CN115198051 A CN 115198051A CN 202210752901 A CN202210752901 A CN 202210752901A CN 115198051 A CN115198051 A CN 115198051A
- Authority
- CN
- China
- Prior art keywords
- furnace
- converter
- section
- installing
- supporting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
Abstract
The invention discloses a method for installing a converter body of a steelmaking converter, which comprises the steps of additionally installing a temporary supporting jig frame of the converter body on a transportation device, reversely installing the converter body section by section from a converter mouth section to a converter bottom section, installing accessories such as a hanging device, a fixed seat and the like on a plane of a backing ring, driving the backing ring to drive the converter body to rotate 180 degrees to a normal production station and the like. The invention utilizes the 'inversion' process, so that the installation and construction process is convenient and efficient, the complexity of the temporary support jig is reduced, and the levelness, the longitudinal center and the transverse center of the converter can be conveniently and rapidly adjusted; the workload of erecting an operation platform is reduced, and the construction safety is improved; the welding is more convenient, and the welding quality is easy to ensure; is especially suitable for the installation of large and medium converter bodies.
Description
Technical Field
The invention relates to the technical field of converter installation, in particular to a method for installing a converter body of a steelmaking converter.
Background
In view of the special requirements of the arrangement of the steel-making production process, the converter bodies are arranged at the high-span column sides of the steel-making factory, and the upper part of the converter is a heavy platform with a multi-layer steel structure. The converter body can not be lifted in place by formal or temporary hoisting machinery in a factory building, so that the steel-making converter body is installed in a steel-making charging span by using a buggy ladle and a slag ladle as transportation devices, installing a converter body temporary support jig on the transportation devices, assembling a converter shell, installing a backing ring and a converter body hanging device, and pushing the converter body integrally in place.
The main traditional installation method is a 'normal installation method', namely, when the converter shell is assembled on a temporary support jig, the installation is carried out from the bottom section to the mouth section, and the installation is carried out from bottom to top section by section. The installation of the trunnion ring, the furnace body hanging device and the fixed seat is carried out according to the normal production state. And (3) dragging the modified transportation device to slowly drive the temporary support jig frame, integrally moving the assembled furnace body to the installation position (on the trunnion bearing seat which is installed and adjusted) to be in place, and then removing the transportation device. The problem with this approach is that:
1. as shown in fig. 1, since the furnace bottom section is an elliptical arc bottom, the temporary supporting jig frame and the supporting surface of the furnace bottom section are arc-shaped, not only is the supporting jig frame not easy to process, but also the stress of each supporting point of the furnace bottom section is uneven, and the potential risk of damaging equipment is caused; meanwhile, when the elevation of the furnace shell is adjusted by adopting a hydraulic jack, the stability is easy to lose, and the safety is poor;
2. the verticality and the longitudinal and transverse centers of the furnace bottom section on the temporary supporting jig frame are not easy to adjust;
3. the hanging device and the fixed seat are installed by erecting an annular personnel operating platform from bottom to top, so that the workload is large;
4. the welding among the hanging device, the fixed seat, the backing ring and the furnace bottom is 50 percent of the upward welding position with high difficulty, and the welding quality is not easy to guarantee.
Therefore, it is an urgent technical problem to develop a converter body installation method with more convenient construction, high reliability and high construction quality.
Disclosure of Invention
Due to the defects in the prior art, the invention provides a method for installing a converter body of a steelmaking converter, and aims to solve the problems of large workload of platform erection, difficult furnace bottom support and more overhead welding operations in the traditional method.
In order to achieve the aim, the invention provides a method for installing a steelmaking converter body, which comprises the following steps:
s1, utilizing a ladle car or a slag ladle car as a conveying device in a charging bay, and additionally arranging a temporary supporting jig frame of a converter body on the ladle car or the slag ladle car;
the temporary support jig frame is characterized by comprising a base, a furnace shell support upright post and a backing ring support upright post; the supporting surface of the furnace shell supporting upright is a plane, and the top parts of the furnace shell supporting upright and the backing ring supporting upright are provided with a hydraulic jack and an adjusting cushion block;
s2, inversely placing the furnace mouth section on the temporary support jig frame, wherein the stress point is arranged on the flange surface of the furnace mouth; adjusting levelness and longitudinal and transverse centers of the furnace mouth section by using a hydraulic jack and an adjusting cushion block on the temporary support jig;
s3, inversely placing the furnace body section on the furnace mouth section, adjusting the verticality of the furnace body section, and welding and connecting the furnace body section and the furnace mouth section;
s4, inverting the converter trunnion ring, sleeving the converter trunnion ring into a furnace body section, and horizontally supporting the trunnion ring by adopting the temporary supporting jig;
s5, inversely placing the furnace bottom section on the furnace body section, adjusting the verticality of the furnace bottom section, and welding and connecting the furnace bottom section and the furnace body section;
s6, after the levelness of the backing ring of the converter and the distance between the backing ring and the furnace shell are adjusted, a converter hanging device and a fixed seat are installed; installing accessories such as a trunnion support, a trunnion bearing seat and the like on the basis of converter equipment;
s7, dragging the conveying device to slowly drive the temporary supporting jig frame, integrally moving the assembled furnace body to a trunnion bearing seat, and then removing the conveying device and the temporary supporting jig frame;
and S8, driving the backing ring through a transmission device to drive the furnace body to rotate 180 degrees to a normal production station.
Preferably, the top surfaces of the furnace shell support upright and the trunnion ring support upright of the temporary support jig frame are horizontal; the central line of the temporary supporting jig frame is superposed with the central line of the converter. The characteristic is convenient for the uniform stress of the supporting surface of the upright post and is beneficial to the quick leveling of the component.
Preferably, the furnace shell support columns are circumferentially and symmetrically arranged, and the diameter of the circumference is consistent with the diameter of the center of the furnace opening flange; the supporting upright columns of the supporting ring are circumferentially and symmetrically arranged, and the diameter of the circumference is consistent with that of the central circle of the supporting ring; and a stand column is arranged below the trunnion ring part at the trunnion ring trunnion.
Preferably, each furnace shell support column and the trunnion ring support column are double-limb columns, a hydraulic jack is arranged at the top of one limb, and an adjusting cushion block is arranged at the top of the other limb. The characteristic enables the connecting line of the temporary supporting jig frame and the gravity center of the converter to be vertical, the supporting is more stable, and the leveling of the furnace shell is more convenient.
Preferably, in the step S2, the furnace mouth section is only supported and leveled by four furnace shell supporting columns which are symmetrical about the center line of the converter. This feature reduces the difficulty of machining the temporary support jig.
Preferably, after the welding in the steps S3 and S5 is completed, the weld joint is subjected to nondestructive testing and heat treatment.
Preferably, in step S6, the constructor uses the support ring plane as an operation platform for installing the hanging device, installing the fixing seat, and welding. The characteristic reduces the workload of erecting the operation platform, is convenient to operate and improves the construction safety.
Compared with the prior art, the invention has the following advantages or beneficial effects:
(1) The design of the flip-chip furnace shell enables the furnace opening flange to be a supporting surface, reduces the complexity of a temporary supporting jig frame, and is convenient for quickly adjusting levelness, longitudinal center and transverse center;
(2) The support ring surface is used as an operation platform for installing and welding the hanging device, so that the workload of erecting the operation platform is reduced, and the construction safety is improved;
(3) A large amount of overhead welding operation among the hanging device, the backing ring and the furnace bottom is avoided, overhead welding is changed into flat welding or inclined plane welding, welding is convenient, and welding quality is easy to guarantee;
(4) The device is especially suitable for the installation of large and medium converter bodies, and the installation efficiency of the hanging device and the fixed seat is improved by nearly one time.
The invention provides a method for installing a converter body of a steelmaking converter, which comprises the steps of additionally installing a temporary support jig frame of the converter body on a transportation device, inverting section by section from a converter mouth section to a converter bottom section, installing accessories such as a hanging device, a fixed seat and the like on a supporting ring plane, driving the supporting ring to drive the converter body to rotate 180 degrees to a normal production station and the like. The invention utilizes the 'flip-chip' process, so that the installation and construction process is convenient and efficient, the complexity of the temporary supporting jig frame is reduced, and the levelness, the longitudinal center and the transverse center of the converter can be conveniently and rapidly adjusted; the workload of erecting an operation platform is reduced, and the construction safety is improved; welding is more convenient, and the welding quality is easy to ensure; is especially suitable for the installation of large and medium converter bodies.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is an elevation view of a converter body installation of the prior art;
FIG. 2 is a flow chart of an installation method of the present invention;
FIG. 3 is an elevational view of a transport unit retrofit and support jig according to an embodiment of the present invention;
FIG. 4 is an elevational view of the furnace port section of an embodiment of the present invention mounted in place on a support jig;
FIG. 5 is an elevation view of the furnace body section and trunnion ring mounted in place on a support jig according to an embodiment of the invention;
FIG. 6 is an elevational view of the furnace bottom section of an embodiment of the present invention mounted in place on a support jig;
FIG. 7 is an elevation view of a pulled converter body of an embodiment of the present invention moved to a base upper position for installation;
FIG. 8 is a completed elevation view of the installation of the converter body of the embodiment of the present invention;
the converter comprises a steel ladle car (or a slag ladle car), a base, a furnace shell supporting upright post, a trunnion ring supporting upright post, a furnace opening section, a hydraulic jack and an adjusting cushion block for installing the furnace shell, a regulating cushion block, a furnace body section, a hydraulic jack, a trunnion ring, a furnace bottom section, a hanging device, a converter equipment foundation, a trunnion support and a trunnion bearing seat, wherein 1 is the steel ladle car (or the slag ladle car), 2 is the base, 3 is the furnace shell supporting upright post, 4 is the trunnion ring supporting upright post, 5 is the furnace opening section, 6 is the hydraulic jack and the regulating cushion block for installing the furnace shell, 7 is the regulating cushion block, 8 is the furnace body section, 9 is the hydraulic jack, 10 is the trunnion ring, 11 is the furnace bottom section, 12 is the hanging device, 13 is the converter equipment foundation, 14 is the trunnion support and 15 is the trunnion bearing seat.
Detailed Description
The structure of the present invention will be further described with reference to the accompanying drawings and specific examples, but the present invention is not limited thereto.
Example 1
As shown in fig. 2, the converter body is installed by a flip-chip installation method of the steelmaking converter body, which comprises the following steps:
s1, as shown in a figure 3, a buggy ladle 1 is used as a conveying device in a charging bay, and a temporary supporting bed-jig of the converter body is additionally arranged on the buggy ladle; the temporary support jig comprises a base 2, a furnace shell support upright 3 and a backing ring support upright 4; the supporting surface of the furnace shell supporting upright column 3 is a plane, and the top parts of the furnace shell supporting upright column and the backing ring supporting upright column are provided with a hydraulic jack and an adjusting cushion block;
s2, as shown in figure 4, inversely placing the furnace mouth section 5 on the temporary support jig frame, and arranging a stress point on a furnace mouth flange surface; the levelness and the longitudinal and transverse centers of the furnace mouth section 5 are well adjusted by utilizing a hydraulic jack and an adjusting cushion block 6 on the temporary support jig;
s3, as shown in figure 5, inversely placing the furnace body section 8 on the furnace mouth section 5, after adjusting the verticality, welding and connecting the furnace body section 8 and the furnace mouth section 5, and performing nondestructive detection and heat treatment on the welding line;
s4, inverting the converter trunnion ring 10, sleeving the converter shell section 8, and horizontally supporting the trunnion ring by adopting the temporary supporting jig; the backing ring 10 adjusts the levelness and the longitudinal and transverse centers through an adjusting cushion block 7 and a hydraulic jack 9 on the temporary support jig;
s5, as shown in FIG. 6, the hearth section 11 is placed upside down on the furnace body section 8, after the verticality of the hearth section 11 is adjusted, the hearth section 11 and the furnace body section 8 are connected in a welding mode, and nondestructive testing and heat treatment are carried out on welding seams;
s6, as shown in the figure 7, after the levelness of the trunnion ring of the converter and the distance between the trunnion ring and the furnace shell are adjusted, a converter hanging device 12 is installed; accessories such as a trunnion support 14, a trunnion bearing seat 15 and the like are arranged on a converter equipment foundation 13;
s7, dragging the transportation device 1 to slowly drive the temporary support jig frame, integrally moving the assembled furnace body to a trunnion bearing seat 15, and then removing the transportation device 1 and the temporary support jig frame;
and S8, as shown in FIG. 8, driving the backing ring 10 through a transmission device to drive the furnace body to rotate 180 degrees to a normal production station.
In this embodiment, the top surfaces of the furnace shell support column 3 and the trunnion ring support column 4 of the temporary support jig frame are horizontal; the central line of the temporary supporting jig frame is superposed with the central line of the converter. The furnace shell support upright posts 3 are circumferentially and symmetrically arranged, and the circumferential diameter is consistent with the central diameter of the furnace opening flange; the supporting upright columns 4 of the supporting ring are circumferentially and symmetrically arranged, and the diameter of the circumference is consistent with that of the central circle of the supporting ring; and a stand column is arranged below the trunnion ring part at the trunnion ring trunnion. And each furnace shell supporting upright post and each backing ring supporting upright post are double-limb posts, a hydraulic jack is arranged at the top of one limb, and an adjusting cushion block is arranged at the top of the other limb. The furnace mouth section is only supported and leveled through four furnace shell supporting upright posts which are symmetrical about the central line of the converter. In the step S6, the constructor uses the upper plane of the backing ring as an operation platform for installing and welding the hanging device.
Example 2
The converter body was mounted using a flip-chip mounting method of a steelmaking converter body, including similar steps to those of example 1. Different from the embodiment 1, the slag ladle car is used as a transportation device, and the temporary supporting jig frame is additionally arranged on the slag ladle car.
In conclusion, the invention discloses a method for installing a converter body of a steelmaking converter, which comprises the steps of additionally installing a temporary supporting jig frame of the converter body on a conveying device, reversely installing the converter body section by section from a converter mouth section to a converter bottom section, installing accessories such as a hanging device, a fixed seat and the like on a plane of a trunnion ring, driving the trunnion ring to drive the converter body to rotate 180 degrees to a normal production station and the like. The invention utilizes the 'flip-chip' process, so that the installation and construction process is convenient and efficient, the complexity of the temporary supporting jig frame is reduced, and the levelness, the longitudinal center and the transverse center of the converter can be conveniently and rapidly adjusted; the workload of erecting an operation platform is reduced, and the construction safety is improved; welding is more convenient, and the welding quality is easy to ensure; is especially suitable for the installation of large and medium converter bodies.
Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described herein in detail. Such variations do not affect the essence of the present invention and are not described herein.
The above description is that of the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (7)
1. A method for installing a steelmaking converter body comprises the following steps:
s1, utilizing a ladle car or a slag ladle car as a conveying device in a charging bay, and additionally arranging a temporary supporting jig frame of a converter body on the ladle car or the slag ladle car;
the temporary support jig frame is characterized by comprising a base, a furnace shell support upright post and a backing ring support upright post; the supporting surface of the furnace shell supporting upright is a plane, and the top parts of the furnace shell supporting upright and the backing ring supporting upright are provided with a hydraulic jack and an adjusting cushion block;
s2, inversely placing the furnace mouth section on the temporary support jig frame, wherein the stress point is arranged on the flange surface of the furnace mouth; adjusting levelness and longitudinal and transverse centers of the furnace mouth section by using a hydraulic jack and an adjusting cushion block on the temporary support jig;
s3, inversely placing the furnace body section on the furnace opening section, adjusting the verticality of the furnace body section, and welding and connecting the furnace body section and the furnace opening section;
s4, inverting the backing ring of the converter, sleeving the backing ring into a furnace body section, and horizontally supporting the backing ring by adopting the temporary supporting jig;
s5, inversely placing the furnace bottom section on the furnace body section, adjusting the verticality of the furnace bottom section, and welding and connecting the furnace bottom section and the furnace body section;
s6, after the levelness of the backing ring of the converter and the distance between the backing ring and the furnace shell are adjusted, a converter hanging device and a fixed seat are installed; installing accessories such as a trunnion support, a trunnion bearing seat and the like on the basis of converter equipment;
s7, dragging the conveying device to slowly drive the temporary supporting jig frame, integrally moving the assembled furnace body to a trunnion bearing seat, and then removing the conveying device and the temporary supporting jig frame;
and S8, driving the backing ring through a transmission device to drive the furnace body to rotate 180 degrees to a normal production station.
2. The method for installing the steelmaking converter body according to claim 1, wherein the top surfaces of the furnace shell support column and the trunnion ring support column of the temporary support jig are horizontal; the central line of the temporary supporting jig frame is superposed with the central line of the converter.
3. The steelmaking converter body installation method of claim 1, wherein the furnace shell support columns are circumferentially symmetrically arranged with a circumferential diameter consistent with a central diameter of the furnace opening flange; the supporting upright columns of the supporting ring are circumferentially and symmetrically arranged, and the diameter of the circumference is consistent with that of the central circle of the supporting ring; and a stand column is arranged below the trunnion ring part at the trunnion ring trunnion.
4. The method of claim 3, wherein each of the furnace shell support columns and the trunnion ring support columns is a double-limb column, and a hydraulic jack is placed at the top of one limb and an adjusting cushion is placed at the top of the other limb.
5. The method for installing a steelmaking converter body according to any one of claims 1 to 4, wherein in the step S2, the throat section is only leveled by four furnace shell support columns which are symmetrical with respect to the center line of the converter.
6. The method for installing a steelmaking converter body as claimed in any one of claims 1 to 4, wherein the weld joint is subjected to nondestructive testing and heat treatment immediately after the welding in steps S3 and S5 is completed.
7. The method for installing the steelmaking converter body according to any one of claims 1 to 4, wherein in the step S6, a worker uses a trunnion ring plane as an operation platform for installing the hanging device, installing the fixed seat and welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210752901.0A CN115198051A (en) | 2022-06-29 | 2022-06-29 | Method for installing steelmaking converter body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210752901.0A CN115198051A (en) | 2022-06-29 | 2022-06-29 | Method for installing steelmaking converter body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115198051A true CN115198051A (en) | 2022-10-18 |
Family
ID=83578871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210752901.0A Pending CN115198051A (en) | 2022-06-29 | 2022-06-29 | Method for installing steelmaking converter body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115198051A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115747413A (en) * | 2022-11-23 | 2023-03-07 | 中国三冶集团有限公司 | Rotary assembly type converter environment-friendly transformation device and use method |
-
2022
- 2022-06-29 CN CN202210752901.0A patent/CN115198051A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115747413A (en) * | 2022-11-23 | 2023-03-07 | 中国三冶集团有限公司 | Rotary assembly type converter environment-friendly transformation device and use method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4064616A (en) | Method for constructing a blast furnace | |
| CN201665684U (en) | Suspending tool arranged at top of blast furnace and used for suspending furnace shell and cooling wall | |
| CN115198051A (en) | Method for installing steelmaking converter body | |
| CN104418240B (en) | The lifting of a kind of flue and group are to method | |
| US6403021B1 (en) | Method of constructing a blast furnace body and lifting transfer apparatus | |
| CN110318468B (en) | Auxiliary device and method for installing eccentric space net rack | |
| JP6611129B2 (en) | How to replace the converter furnace body | |
| CN110482438A (en) | DC arc furnace bottom electrode mounting and adjusting tool and hearth electrode installation method | |
| CN106816194B (en) | Installation method of passive advanced pressurized water reactor coolant pump | |
| CN105154616A (en) | Method for mounting suspended ball joint converter | |
| CN113738125A (en) | Line-straight-down type station room limited space large-span steel structure lifting construction method | |
| CN112077549A (en) | Quick installation method for converter transformation | |
| JP3046552B2 (en) | Blast furnace furnace construction method | |
| CN203462075U (en) | Furnace-supporting platform frame of converter | |
| JP4592860B2 (en) | Blast furnace component installation method | |
| CN112374344A (en) | Method for mounting top of large-scale gas tank in steel mill | |
| CN215925714U (en) | Construction tool for integral vertical rotation of steel tower | |
| JP2017125411A (en) | Turbine casing rotating device | |
| CN220704581U (en) | Movable launching frame foundation for rocket launching | |
| US4130924A (en) | Removal and/or installation of top section of steelmaking vessel | |
| CN113883900B (en) | Double-shaft electric furnace shaft frame assembly and installation method | |
| CN104259808A (en) | Offshore derrick splicing and integrally hanging boarding method | |
| JP4349173B2 (en) | Method for assembling annular tube and supporting structure thereof | |
| CN110228748B (en) | Lifting beam and hoisting method for fan shell assembly of high-temperature gas cooled reactor steam generator | |
| CN113896089B (en) | Construction method of oversized blast furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |