Segmented mounting method for square raw coal hopper

An installation method and raw coal scuttle technology, applied in the field of power plant construction, can solve the problems of excessive use of mechanical shifts, heavy workload of scaffolding, and many butt welding points, and achieve saving of large mechanical shifts, reduction of full scaffolding, and better control The effect of size deviation

CN106567548AActive Publication Date: 2017-04-19SEPCOIII ELECTRIC POWER CONSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-04-19

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Abstract

The invention provides a segmented mounting method for a square raw coal hopper. The segmented mounting method for the square raw coal hopper comprises the steps that the raw coal hopper is manufactured and combined in a segmented mode; corrosion prevention is conducted on the ground where the raw coal hopper is located in a segmented mode; the raw coal hopper is transported in a segmented mode; the raw coal hopper is hoisted in a segmented mode; and assembling is conducted. By adoption of the segmented mounting method for the square raw coal hopper, the high-altitude butt joint workload is greatly reduced, the working time is shortened, the number of all-round scaffolds required when a traditional single-segment construction scheme is adopted is reduced, the cost is reduced, and the construction efficiency is improved.
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Description

technical field

[0001] The invention relates to the technical field of power plant construction, in particular to a segmented installation method for square raw coal scuttles. Background technique

[0002] In a low calorific value coal power generation and heating project of a power plant (2×350MW), the square raw coal hopper of the unit is located between the columns B-C of the main workshop. The upper straight cylinder of each raw coal scuttle has dimensions of 8×7.7m and a height of 3.3m, and the lower cone section is a square cone with a height of 9.3m. Each coal scuttle is hung on the lugs of the 40.3m layer coal hopper beam between the coal bunkers through the upper horizontal reinforcement plate.

[0003] The traditional construction method of the above-mentioned raw coal scuttle is a construction scheme in which the material is laid on one side of the wall, the outer reinforcement is installed, and the single piece is hoisted, and finally assembled (ie, piecewise in...

Examples

Embodiment Construction

[0041] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings. The invention discloses a segmented installation method of a square raw coal scuttle. The installation method includes the following steps:

[0042] 1) Raw coal scuttle production combination, including:

[0043] 11) Each segment of the coal hopper wall board shall be cut according to the lofting size of the drawing, and the number of segments shall be at least three;

[0044] 12) After the cutting material is cut and leveled, the assembly is carried out. After the assembly of the single piece is completed, the size is checked to confirm that it is correct, and then the reinforced steel is welded;

[0045] 13) After the butt welding of the coal bucket wall plate is completed, the segmented cylinder assembly is carried out;

[0046] 14) After the segmented cylinder is assembled, a well-shaped temporary reinforcement support is made inside ...