CN110923385A - Accurate installation method of bustle pipe - Google Patents
Accurate installation method of bustle pipe Download PDFInfo
- Publication number
- CN110923385A CN110923385A CN201911202455.0A CN201911202455A CN110923385A CN 110923385 A CN110923385 A CN 110923385A CN 201911202455 A CN201911202455 A CN 201911202455A CN 110923385 A CN110923385 A CN 110923385A
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- China
- Prior art keywords
- bustle pipe
- hot blast
- installing
- hot
- bustle
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/10—Other details, e.g. blast mains
Abstract
The invention provides a method for accurately installing a hot blast bustle pipe, which comprises the following steps of 1) dividing the hot blast bustle pipe into units according to weight, and drawing a layout; 2) pre-assembling units of the hot blast surrounding pipes according to the layout; 3) manufacturing eight temporary supports for installing the hot blast surrounding pipes, namely installing the hot blast surrounding pipes on eight equal dividing positions of the outer periphery of the blast furnace, and simultaneously controlling the top surface of each temporary support to be higher to meet engineering requirements; 4) the hot blast bustle pipes are assembled on the temporary support, and meanwhile, the installation precision of each unit is guaranteed; 5) and (3) mounting the blast furnace girder after the bustle pipe is mounted, connecting the bustle pipe with the girder by adopting a hanging and tensioning device, and finally dismantling the temporary support. The invention greatly saves the use cost, labor cost and the like of large machinery, solves the problem that the ground with a narrow place cannot be spliced, shortens the installation time of the bustle pipe and improves the alignment precision of the bustle pipe.
Description
Technical Field
The invention belongs to the technical field of blast furnace hot blast system bustle pipe construction, and particularly relates to an accurate installation method of a bustle pipe.
Background
The hot blast surrounding pipe is a connection link between the blast furnace body and the hot blast stove and is an important ring for structural installation of a blast furnace hot blast system. In the prior construction, the hot blast surrounding pipe is mostly fixed after being integrally hoisted, and the method increases the cost of machinery, labor and the like.
Disclosure of Invention
The invention aims to save the cost of machinery, labor and the like, shorten the installation time of the bustle pipe and improve the alignment precision of the bustle pipe.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for accurately installing a hot blast bustle pipe comprises the following steps:
1) dividing the hot blast bustle pipes into units according to weight, and drawing a layout plate;
2) pre-assembling units of the hot blast surrounding pipes according to the layout;
3) manufacturing eight temporary supports for installing the hot blast surrounding pipes, namely installing the hot blast surrounding pipes on eight equal dividing positions of the outer periphery of the blast furnace, and simultaneously controlling the top surface of each temporary support to be higher to meet engineering requirements;
4) the hot blast bustle pipes are assembled on the temporary support, and meanwhile, the installation precision of each unit is guaranteed;
5) and (3) mounting the blast furnace girder after the bustle pipe is mounted, connecting the bustle pipe with the girder by adopting a hanging and tensioning device, and finally dismantling the temporary support.
In the installation method, the operation of the bustle pipe dividing unit is specifically to establish a three-dimensional model of the bustle pipe through BIM software, acquire the axis of the bustle pipe and various multi-dimensional three-dimensional control sizes through the model and determine the segmentation condition.
In the installation step, before the assembly construction of each hot air pipe on site, BIM software is used for making three-dimensional animation to dynamically simulate the hoisting process, the crane station position is determined through animation demonstration, the operation angle and the moving direction of the crane arm are determined, the collision between the crane arms or the collision between the crane arms and the existing structure is avoided, and the hoisting route is finally determined.
The invention has the beneficial effects that: the invention greatly saves the use cost, labor cost and the like of large machinery, solves the problem that the ground with a narrow place cannot be spliced, shortens the installation time of the bustle pipe and improves the alignment precision of the bustle pipe.
Drawings
FIG. 1 is a schematic view of the overall structure of a hot blast shroud;
FIG. 2 is a schematic diagram of the division of the hot blast bustle pipe unit;
FIG. 3 is a schematic view of the installation and positioning of temporary support for the hot blast bustle pipe;
FIG. 4 is a schematic view of the installation of the hot blast shroud above the temporary support;
FIG. 5 is a schematic view of the installation and fixation of the bustle pipe and the crossbeam of the blast furnace;
fig. 6 is a schematic view of the overall depression structure after construction is completed.
Detailed Description
The installation method of the present invention will be described in detail and fully with reference to the accompanying drawings and examples. The invention provides a method for accurately installing a bustle pipe, which comprises the following steps:
firstly, dividing the hot blast bustle pipes into units according to weight, and drawing a layout. Referring to fig. 1 and 2, the diameter (central diameter) of the heat pipe is Φ 2320 × 14, and the total weight of the heat pipe is 56 tons. The hot bustle pipes are divided into 3 units, namely a first unit B1, a second unit B2 and a third unit B3. Of the three unit members: b1 is a constant-diameter tee phi 2320 and 14; b2 is a straight pipe Φ 2320 × 14; b3 is a straight Φ 2320 × 14. In the operation, the dividing unit establishes a three-dimensional model of the hot blast bustle pipe through BIM software in a specific mode, acquires the axis of the hot blast bustle pipe and various multi-dimensional three-dimensional control sizes through the model, determines the segmentation condition, and calculates various multi-dimensional three-dimensional control sizes through establishing the three-dimensional model through the BIM software, so that the accuracy is high, the method can be used for actual segmentation, and is convenient and fast.
And secondly, as a pre-flow of formal assembly, technicians firstly utilize a three-dimensional model of the hot air bustle pipe established by BIM software to make a three-dimensional animation for dynamically simulating the hoisting process, determine the crane station position through animation demonstration, avoid the collision of a crane arm with the crane arm or the existing structure, eliminate the influence of obstacles in the turning radius of the crane and finally determine a hoisting route. By simulating the hoisting route, an optimal hoisting scheme can be determined, and the hoisting cost and the hoisting time are saved. Then, the assembly of the hot air black pipes on site is formal, and each unit is pre-assembled according to the layout during construction, so that the three units can be completely butted (refer to fig. 4).
And thirdly, combining the figure 3, manufacturing eight temporary supports for installing the hot blast bustle pipe, wherein the top surface elevation meets the engineering requirement during installation. In this example, the temporary support has an elevation of 17 m. The specific operation is as follows: through the blast furnace body axis and the elevation of deciding, can confirm the mounted position of hot-blast bustle pipe, can decide the axis and the elevation of the interim support of hot-blast bustle pipe installation, the installation size deviation control of axis and elevation is carried out to accessible theodolite and surveyor's level, ensures that the installation size deviation accords with the standard requirement, controls the installing support in proper order.
And fourthly, finishing the pairing of the units of the hot blast bustle pipe on the temporary support, and controlling the installation precision of the units. Specifically, the installation position of the bustle pipe can be determined by determining the shafting and elevation of the temporary support for mounting the hot blast enclosure and the shafting and elevation of the blast furnace body, namely the axes and elevations of the bustle pipes B1, B2 and B3 are determined, and the deviation of the installation size of the axes and the elevations is controlled by a theodolite and a water level so as to ensure that the deviation of the installation size meets the standard requirement; after the installation of the hot blast bustle pipe is finished, the elevation and the axis of the hot blast bustle pipe are measured and whether the elevation and the axis coincide with the elevation in the drawing is judged. Refer to fig. 5 and 6.
Fifthly, after the bustle pipes are installed, the blast furnace girder is installed, then the bustle pipes are connected with the girder through the hanging and tensioning devices, and the temporary support is detached after all the bustle pipes are installed.
The invention has the beneficial effects that: the invention greatly saves the cost of machinery, labor and the like, shortens the installation time of the bustle pipe and improves the alignment precision of the bustle pipe.
Claims (3)
1. A method for accurately installing a hot blast bustle pipe comprises the following steps:
firstly), dividing units of the hot blast bustle pipe according to weight, and drawing a layout plate;
secondly), assembling all units of all the hot blast surrounding pipes according to the typesetting drawing;
thirdly), manufacturing eight temporary supports for installing the hot blast bustle pipe, and installing and controlling the elevation of the top surface;
fourthly), installing each unit of the hot blast bustle pipe and controlling the precision;
fifthly), installing the hot blast bustle pipe hanging and tensioning device and dismantling the temporary support.
2. The precise installation method of the hot blast bustle pipe according to claim 1, characterized in that: the operation of the hot bustle pipe dividing unit is specifically to establish a three-dimensional model of the hot bustle pipe through BIM software, collect the axis of the hot bustle pipe and various multi-dimensional control sizes through the model, and determine the segmentation condition.
3. The precise installation method of the hot blast bustle pipe according to claim 1 or 2, characterized in that: before assembling construction of each hot air pipe on site, BIM software is used for making three-dimensional animation to dynamically simulate a hoisting process, a crane station is determined through animation demonstration, the operation angle and the moving direction of a crane arm are determined, collision between the crane arms or between the crane arms and an existing structure is avoided, and a hoisting route is finally determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911202455.0A CN110923385A (en) | 2019-11-29 | 2019-11-29 | Accurate installation method of bustle pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911202455.0A CN110923385A (en) | 2019-11-29 | 2019-11-29 | Accurate installation method of bustle pipe |
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| CN110923385A true CN110923385A (en) | 2020-03-27 |
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| CN201911202455.0A Pending CN110923385A (en) | 2019-11-29 | 2019-11-29 | Accurate installation method of bustle pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565324A (en) * | 2021-07-26 | 2021-10-29 | 中建四局第三建设有限公司 | Method for removing bailey frames in small space by wholly sliding horizontally and fixing points |
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| CN109543342A (en) * | 2018-12-11 | 2019-03-29 | 北京市政路桥股份有限公司 | Small space steel box-girder lifts dynamic crash detection method |
| KR20190046448A (en) * | 2017-10-26 | 2019-05-07 | 현대제철 주식회사 | Blow device for blast furnace |
| CN110273039A (en) * | 2019-07-23 | 2019-09-24 | 安徽马钢设备检修有限公司 | A kind of blast furnace bustle pipe hoisting structure and its installation method |
| CN110408733A (en) * | 2019-08-30 | 2019-11-05 | 中国二十二冶集团有限公司 | Blast furnace rise and fall pipe is without falsework hanging method |
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2019
- 2019-11-29 CN CN201911202455.0A patent/CN110923385A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698894A (en) * | 2009-10-26 | 2010-04-28 | 中国十七冶建设有限公司 | High-altitude segmented in-position installation method for blast-furnace hot-air surrounding pipes |
| CN204111788U (en) * | 2014-10-17 | 2015-01-21 | 邢台钢铁有限责任公司 | A kind of perforating on air opening of blast furnace hot air enclosing pipe locating device |
| CN105695650A (en) * | 2016-04-27 | 2016-06-22 | 中国十九冶集团有限公司 | Blast furnace five-way ball installation method |
| CN105969922A (en) * | 2016-07-15 | 2016-09-28 | 新兴铸管股份有限公司 | Blast furnace body preassembly technique |
| CN106119454A (en) * | 2016-08-31 | 2016-11-16 | 中国十九冶集团有限公司 | The installation method of blast-furnace hot-air surrounding pipes |
| KR20190046448A (en) * | 2017-10-26 | 2019-05-07 | 현대제철 주식회사 | Blow device for blast furnace |
| CN109543342A (en) * | 2018-12-11 | 2019-03-29 | 北京市政路桥股份有限公司 | Small space steel box-girder lifts dynamic crash detection method |
| CN110273039A (en) * | 2019-07-23 | 2019-09-24 | 安徽马钢设备检修有限公司 | A kind of blast furnace bustle pipe hoisting structure and its installation method |
| CN110408733A (en) * | 2019-08-30 | 2019-11-05 | 中国二十二冶集团有限公司 | Blast furnace rise and fall pipe is without falsework hanging method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565324A (en) * | 2021-07-26 | 2021-10-29 | 中建四局第三建设有限公司 | Method for removing bailey frames in small space by wholly sliding horizontally and fixing points |
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Application publication date: 20200327 |
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