Steel inner cylinder mounting method
An installation method, the technology of the steel inner cylinder, applied in the direction of building types, buildings, towers, etc., can solve the problems of high installation cost, damage to the inner surface of the chimney, and high risk
Inactive Publication Date: 2020-05-22
MCC5 GROUP CORP SHANGHAI
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Problems solved by technology
[0002] Most of the chimney steel inner cylinders in thermal power plants are made of ordinary carbon steel, and the installation is carried out by internal lifting of hydraulic cylinders. Since the hydraulic lifting components need to be in contact with the inner cylinder, this hydraulic internal lifting method may cause damage to the inner surface of the chimney
Some steel inner cylinders start to use titanium-steel composite steel plate materials. Since the height of the ultra-high steel inner cylinder exceeds 200m, the construction efficiency is low, and the existing steel inner cylinders have high installation costs and high risks.
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[0015] The structure of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not intended as a limitation of the present invention.
[0016] As shown in the figure, the embodiment of the present invention discloses a steel inner cylinder installation method, including the following steps:
[0017] Step 1: Install a lifting device outside the steel inner cylinder, and install an assembly welding platform and a support cutting platform on the device structure;
[0018] Step 2: Cutting the steel inner cylinder in sections in the height direction, and cutting in portions in the circumferential direction;
[0019] Step 3: Hoist the three rolled steel plates to the floor mold position, assemble them and complete the welding of the standing seam;
[0020] Such as Figure 4 and Figure 5 As shown, Step 4: Arrange the lifting point of the first layer after the combined welding of the steel inner cylin...
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The embodiment of the invention discloses a steel inner cylinder mounting method. The steel inner cylinder mounting method comprises the following steps that a lifting device is arranged outside a steel inner cylinder, and an assembling welding platform and a support cutting platform are arranged on the device structure; the steel inner cylinder is subjected to segmented blanking in the height direction, and blanking is carried out in the circumferential direction; three steel plates formed by rolling are hoisted to the position of a bottom plate jig, and assembling and welding of vertical seams are completed; after the first section of steel inner cylinder is combined and welded, a first layer of lifting points are arranged, and a support is firmly welded; a hydraulic lifting device is used for lifting and separating a base; the next section is continuously assembled and mounted, the steel inner cylinder is lifted, and the steel inner cylinder is welded with the previous section in anopposite-opening mode; the lifting and assembling operation is repeated, and the third section and the fourth section are sequentially mounted in place; after welding is correct and qualified throughinspection, the whole steel inner cylinder falls onto a supporting platform; and the steps are repeated, the implementation cost is low, the construction efficiency is high, the safety risk is low, and the construction quality is obviously improved.
Description
technical field [0001] The invention relates to the field of installation of titanium-steel composite plates, in particular to a method for installing a steel inner cylinder. Background technique [0002] Most of the chimney steel inner cylinders in thermal power plants are made of ordinary carbon steel, and the installation is carried out by internal lifting of hydraulic cylinders. Since the hydraulic lifting components need to be in contact with the inner cylinder, this hydraulic internal lifting method may cause damage to the inner surface of the chimney . Some steel inner cylinders started to use titanium-steel composite steel plate materials. Since the height of the ultra-high steel inner cylinder exceeds 200m, the construction efficiency is low, and the existing steel inner cylinders have high installation costs and high risks. Contents of the invention [0003] In view of the above existing problems, the embodiment of the present invention discloses a steel inner c...
Claims
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Login to View More IPC IPC(8): E04H12/28
CPCE04H12/28
Inventor 强琦午焦瑯珽葛蔚刘志会陈小东
Owner MCC5 GROUP CORP SHANGHAI