Construction method for translation and replacement of blast furnace top air-tight box device
A construction method and blast furnace technology, applied in blast furnaces, blast furnace details, blast furnace parts, etc., can solve problems such as the dismantling and installation of the crown crane, and solve the problem that the crown crane cannot be used for hoisting, speed up the construction progress, and reduce investment Effect
Inactive Publication Date: 2014-02-26
BEIJING SHOUGANG CONSTR GROUP
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Problems solved by technology
[0005] The purpose of the present invention is to provide a construction method for shifting and replacing the airtight box equipment on the top of the blast furnace, especially the upper and lower flange joints have a good protective effect, and solve the problem that the crown crane cannot directly remove the airtight box The installation is difficult, and the translation technology is used to replace it, which avoids the phenomenon of dragging and pulling. Its facilities are simple, safe and efficient, and it is the best construction technology for replacement.
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[0020] 1. Production of translation girder
[0021] The translating girder 1 is welded by I-beam and track, that is, the upper flange plate of I-beam is welded to the track. The translating girder 1 is the main facility during the translation process of the airtight box. A form of small friction causes it to translate over it.
[0022] 2. Remove the accessory parts of the airtight box
[0023] The parts of the airtight box to be removed include the upper pup joint, flange connection bolts, connecting various pipelines, and the distribution chute. The joints of each part should be well protected during removal.
[0024] 3. Set up translation facilities
[0025] The most important part of the translation of the airtight box is to set up translation facilities. It is the technical core of the overall translation, the key to realize the translation of the airtight box, and the center of the entire construction process. The installation of the translation girder is carried out at...
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The invention relates to a construction method for translation and replacement of a blast furnace top air-tight box device, and belongs to the technical field of construction of blast furnaces. The construction method comprises the following steps: manufacturing two translation girders, dismantling a material distribution chute, a connecting bolt of an air-tight box, a connecting pipe and an upper pup joint after shutdown of the blast furnace, heightening the air-tight box by about 1m by using four 20-ton chain blocks, penetrating the two translation girders, passing the center of the blast furnace by 2m, coating butter on tracks of the translation girders, placing the air-tight box on the girders, arranging one set of power device of a hoisting machine on an eight-angle platform, translating out the air-tight box by utilizing traction force of the hoisting machine, and moving the air-tight box to the position to which a furnace top crown block can be hoisted; when the new air-tight box is mounted, the direction which is opposite to that of a pulley block arranged in dismantling is used, and then the new air-tight box can be translated to the place. The construction method has the advantages of playing a great role in protecting an interface of an upper flange and a lower flange, solving the difficult problem that the air-tight box can not be directly dismantled by the furnace top crown block, performing replacement by utilizing a translation technology and avoiding the phenomenon of pulling by force; and facilities are simple, safe and high-efficient.
Description
technical field [0001] The invention belongs to the technical field of blast furnace construction, and in particular relates to a construction method for translational replacement of airtight box equipment on the top of a blast furnace, which is suitable for rapid replacement of the airtight box for blast furnace inspection and construction where the space is narrow and cannot be vertically hoisted. Background technique [0002] The airtight box of the blast furnace top equipment is one of the important components of the blast furnace top equipment. It plays the role of sealing the blast furnace ironmaking feeding system. Due to the long-term influence of high temperature and high pressure in the furnace, the airtight box is very tight. It is easy to be affected, and when it is serious, it will affect the production of the blast furnace, so it is necessary to complete the removal and installation of the airtight box in a short time. [0003] The total weight of the blast fur...
Claims
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IPC IPC(8): C21B7/00
Inventor 李国明姜利
Owner BEIJING SHOUGANG CONSTR GROUP