CN101713613A - Process for constructing oversize main air draft pipeline of sintering project - Google Patents
Process for constructing oversize main air draft pipeline of sintering project Download PDFInfo
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- CN101713613A CN101713613A CN200910228478A CN200910228478A CN101713613A CN 101713613 A CN101713613 A CN 101713613A CN 200910228478 A CN200910228478 A CN 200910228478A CN 200910228478 A CN200910228478 A CN 200910228478A CN 101713613 A CN101713613 A CN 101713613A
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Abstract
The invention relates to a process for constructing an oversize main air draft pipeline of a sintering project, which comprises the following steps of: paving two trolley railways on the ground surface in a factory building for bottom layer transportation and upper layer mounting, namely forming an upper operating layer and a lower operating layer; and adopting a principle that materials are transported from the bottom of the head of a machine, the head of the machine is mounted towards the tail of the machine and a mechanical power trolley is used for transporting the materials, transporting a main flue to a mounting position section by section, matching a winding machine with a chain hoist to vertically hoist each section of the flue in place, and welding the sections of the flue. The process has the advantages of efficiently reducing insufficient constructing and assembling spaces, putting an end to the cross-mounting and the mutual influences with a recirculation cooler, shortening the overall construction period of the project, and greatly improving the working efficiency.
Description
Technical field:
The invention belongs to the construction method in a kind of smelting industry, particularly a kind of process for constructing oversize main air draft pipeline of sintering project.
Background technology:
In smelting industry, in order to improve the quality, save floor space, many production units constantly enlarge production equipment, and some other supporting facility also strengthens thereupon like this, thereby the construction ability of unit in charge of construction also had higher requirement, as the important mounting portion of sintering engineering, sintering master exhausting flue is along with engineering enlarges, and pipe diameter is also increasing, all there are platform and beams of concrete in its lower floor of installation site and the upper strata of main air draft pipeline simultaneously, and installing space is narrow.If with the upper strata concrete structure construction intact after pipe laying again; can't install with crane; if but the construction of top xoncrete structure is carried out in the installation of carrying out flue collector earlier again; can have a strong impact on the duration; and can not form good protection to pipeline; destroy flue collector easily; safety and quality all can't meet the demands; therefore most of unit in charge of construction builds this class and is holding aspect cost control and the construction method not quite; never one overlaps effective installation method and ripe construction technology; therefore, can not be to technology; cost such as quality and material is well controlled.
Our the maximum mount scheme of main air draft pipeline employing in the large scale sintering engineering was to lay temporary track on the beam of pipeline installation place in the past, for fear of forming cumulative errors with outside flue joint, therefore, normal operational procedure should be that flue begins to install from head, like this, flue just should be from tail (opposite side) transportation feeding, and the central cooler of tail is installed and the installation period of main exhausting flue is all longer, like this flue can only be installed earlier, central cooler is installed in the back, has had a strong impact on the overall duration.
Summary of the invention:
Purpose of the present invention just is to overcome above-mentioned the deficiencies in the prior art, and a kind of process for constructing oversize main air draft pipeline of sintering project is provided, and this process can improve work efficiency widely.
Technical scheme of the present invention is: a kind of process for constructing oversize main air draft pipeline of sintering project is characterized in that: two trolley travelling tracks are laid on ground in factory building, and promptly upper and lower two work layers are installed on bottom transportation, upper strata; Employing is from head bottom haul, and head is installed to the tail direction, utilizes the principle of machine power dolly transported material, and the flue collector segmentation is transported to the infield piecemeal, utilizes hoist engine to cooperate each section flue vertical lifting is in place, welding with jack again.
Center distance between above-mentioned two trolley travelling tracks equals the wheelspan of dolly.
Above-mentioned two trolley travelling tracks will stretch out outside the factory building axis.
Advantage of the present invention is: reduced nervous construction assembly unit place effectively, stopped the installation that intersects with central cooler again, be independent of each other, shortened the whole duration of engineering, improved work efficiency widely.
The specific embodiment:
660m
2The sintering machine engineering is the sintering machine of the maximum undertaken the construction of in the world so far, its main exhausting flue collector also is rated as the main exhausting flue of diameter maximum in the world, its installation method is different with minor diameter flue installation method in the past, I think that the installation method construction can obtain good effect like this, am described in detail the method for the installation of this flue below.
The main air draft pipeline total length is 270 meters in the main sintering building.To between 20 lines, A--B strides, B--C strides each one time at 7.5 meters platform 1 lines of main building, and being respectively desulfurization system is to use with non-desulfurization.Single time flue is about 135 meters, and head diminishes gradually to the tail pipeline, every time four kinds of different tube diameters is arranged, and is respectively ￠ 6074mm, ￠ 5774mm, ￠ 5474mm, ￠ 5174mm, all rolls with the steel plate of δ=12 to form.Ton surplus the pipeline fabrication and installation amount about 800, the duct bottom spacing has a comb holder and a movable roller for 6 meters.
Method in the past is to becoming 8 meters with pipeline group, about 17 tons of every joint weight, lifting to track and need finish with 50 tons of truck cranes, because the beams of concrete space is bigger, the track bottom need add the section steel beam of H300 * 300 * 10 * 15, and pipeline bears dynamic load in transportation bigger, for the sake of assurance, we need add all round victory frame pipe and support at the bottom of beam, treat pipeline all transportation advance factory in place after, remove pipe support again.
Construction method of the present invention is:
(1), guarantee that the member of installing has earlier been made and finish, must consider during composing that plate is wide, order the scale long slab, guarantee that weld seam staggers and meet code requirement, guarantee that weld seam can not drop down onto the first-class series of factors of conduit saddle, reduce the spillage of material amount as far as possible.
(2), the factory building interior conduit install under the place must smooth, compacting, in the pipeline installation region, lay the TG38kg track then, two orbit centre spacings are 2.3M, this length is according to the wheelspan of on-site transportation ladle dolly and decide.Track stretches out the 1. outer 3M of axis of factory building, to guarantee that member can lift on the ladle dolly to the track, will transport near lifting component to the ladle dolly with 20 tons of truck cranes, draw the ladle dolly to the installation place ground location with elevator, main sintering building is the concrete frame structure, the intercolumniation major part is 8M, and every center-to-center has the concrete beam, and the useful space is divided into not enough 4M, therefore, it is long that member major part through setting type is made into 3.2M, about 7 tons of substance, assembly unit welding behind the hoisted in position.
(3), according to field condition, main building is that the north-south is arranged, the southern side is the central cooler framework, place, north side head place is rather spacious, therefore, considers that the method that member " by the transportation of north orientation south, is installed " from south to north installs.
Claims (3)
1. a process for constructing oversize main air draft pipeline of sintering project is characterized in that: two trolley travelling tracks of ground laying in factory building, bottom transportation, upper strata installation, promptly upper and lower two work layers; Employing is from head bottom haul, and head is installed to the tail direction, utilizes the principle of machine power dolly transported material, and the flue collector segmentation is transported to the infield piecemeal, utilizes hoist engine to cooperate each section flue vertical lifting is in place, welding with jack again.
2. process for constructing oversize main air draft pipeline of sintering project according to claim 1 is characterized in that: the center distance between above-mentioned two trolley travelling tracks equals the wheelspan of dolly.
3. process for constructing oversize main air draft pipeline of sintering project according to claim 1 is characterized in that: above-mentioned two trolley travelling tracks will stretch out outside the factory building axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910228478A CN101713613A (en) | 2009-11-18 | 2009-11-18 | Process for constructing oversize main air draft pipeline of sintering project |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910228478A CN101713613A (en) | 2009-11-18 | 2009-11-18 | Process for constructing oversize main air draft pipeline of sintering project |
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| Publication Number | Publication Date |
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| CN101713613A true CN101713613A (en) | 2010-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910228478A Pending CN101713613A (en) | 2009-11-18 | 2009-11-18 | Process for constructing oversize main air draft pipeline of sintering project |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764327A (en) * | 2015-03-26 | 2015-07-08 | 中国五冶集团有限公司 | Indoor smoke channel mounting process of sintering engineering |
| CN110044184A (en) * | 2019-01-29 | 2019-07-23 | 五冶集团上海有限公司 | It is sintered internal circulation system installation method |
| CN110159057A (en) * | 2019-05-24 | 2019-08-23 | 中国二十二冶集团有限公司 | Technological transformation workshop chimney construction method of installation |
-
2009
- 2009-11-18 CN CN200910228478A patent/CN101713613A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764327A (en) * | 2015-03-26 | 2015-07-08 | 中国五冶集团有限公司 | Indoor smoke channel mounting process of sintering engineering |
| CN104764327B (en) * | 2015-03-26 | 2016-06-29 | 中国五冶集团有限公司 | A kind of sintering engineering internal flue mounting process |
| CN110044184A (en) * | 2019-01-29 | 2019-07-23 | 五冶集团上海有限公司 | It is sintered internal circulation system installation method |
| CN110159057A (en) * | 2019-05-24 | 2019-08-23 | 中国二十二冶集团有限公司 | Technological transformation workshop chimney construction method of installation |
| CN110159057B (en) * | 2019-05-24 | 2021-01-22 | 中国二十二冶集团有限公司 | Mounting and construction method for smoke pipe of technically improved factory building |
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Open date: 20100526 |