文章来源： 作者：罗茨机电 发布时间：2021-11-16 浏览次数：488
1. First, check the overall dimension of the foundation and the central dimension of each reserved hole; The external dimension deviation of the foundation shall be within ± 20mm, and the central dimension deviation of each reserved cavity shall be within ± 10mm; The foundation marking shall be based on the building base point of the main power house or the vertical and horizontal centerline of the boiler. The measured deviation of the vertical and horizontal main centerline of the foundation shall be ± 10mm, the distance deviation of the centerline shall be ± 3mm, and the foundation elevation shall be between ± 5mm;
2. Chisel the foundation, place the anchor bolts and arrange the sizing block. The sizing block group is generally 2 flat, 1 inclined and 3 pairs of sizing blocks. The thick ones are placed below, and the inclined sizing blocks shall be used in pairs; And extend out of the frame by about 20mm; After alignment, it shall be welded firmly without loosening; The sizing block shall be placed on the main bearing bedplate of the equipment, the vertical reinforcement of the machine frame or both sides of the anchor bolt, and shall be as close to the anchor bolt hole as possible without affecting the secondary grouting;
3. Rough positioning of the lower half of the casing: pay attention to the installation marks of the manufacturer, usually one for "a" and "B". Before positioning, pay attention to distinguish the relationship with the inlet and outlet air duct and the rotation direction of the impeller;
4 . 将集流器喇叭口插入叶轮内用铁丝固定后，将整个转动组吊入预定位置;安装地脚螺栓，地脚螺栓的弯曲度应≤L /100(L为地脚螺栓的长度)，地脚螺栓底端不应接触孔底、孔壁。地脚螺栓应受力均匀、并螺栓外露2～3扣;然后松开铁丝将集流器下部与机壳下半部用螺栓固定初步调整叶轮与喇叭口的间隙。
4. Insert the bell mouth of the collector into the impeller and fix it with iron wire, and then lift the whole rotating group into the predetermined position; When installing the anchor bolt, the bending degree of the anchor bolt shall be ≤ L / 100 (L is the length of the anchor bolt), and the bottom end of the anchor bolt shall not contact the hole bottom and hole wall. The anchor bolt shall be stressed evenly and exposed for 2 ~ 3 buckles; Then loosen the iron wire, fix the lower part of the collector and the lower half of the casing with bolts, and preliminarily adjust the gap between the impeller and the bell mouth.
5. Leveling and alignment of fan rotating group: the perpendicularity between fan main shaft and bearing seat shall be aligned by the following methods: stick the magnetic seat on the main shaft, and point the dial indicator head to the bearing outer ring or the elastic end face of the bearing seat (i.e. the machined surface of the upper end cover); At this time, rotate the spindle for more than one cycle, and the reading of the gauge needle shall not be greater than 0.15mm. This reading value is the perpendicularity between the bearing seat and the spindle.
6. Motor leveling and alignment: adjust the coaxiality of fan and motor main shaft (i.e. coupling leveling and alignment). Align with three dial indicators, two axially and one radially; Rotate each shaft 90 degrees, record the data, measure the readings up, down, left and right, and adjust the coaxiality to make the error ≤ 0.05mm; There shall be a 10mm gap between the two coupling wheels. After alignment, recheck the shaft center height and other data and make records.
7. After the fan is aligned, buckle the cover on the upper half of the casing, install the collector and the casing in place, and pad asbestos rope between the two casings; Tighten the connecting bolts, and the bolts on four sides shall be stressed evenly; Based on the impeller, adjust the clearance between the impeller and the bell mouth again.
8. Install the air inlet box, inlet regulating baffle door and other parts of the fan. The regulating baffle rotates flexibly. Otherwise, add lubricating oil to rotate until it rotates flexibly; During installation, the blade plate shall be firmly fixed and have sufficient expansion clearance with the shell; The adjusting operating device shall be flexible and correct, the action shall be consistent, and the opening indication mark shall be consistent with the actual situation; Pay attention to the opening direction and do not install it reversely. The air inlet direction is the same as the rotation direction of the impeller.
9. The layout of cooling water and lubricating oil pipes shall meet the requirements of the drawings, be correct and beautiful, and there shall be no sundries in the pipes.
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