1.首先，检查地基的外形尺寸、各预留空洞的中心尺寸;地基外型尺寸偏差应在±20mm范围内，各预留空洞的中心尺寸偏差应在±10mm之间;基础划线，以主厂房建筑基点或锅炉纵横中心线为基准，测得基础纵横主中心线偏差应在±10mm，中心线距离偏差应为±3mm，基础标高应在±5mm之间;

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.凿平地基，放置地脚螺栓、布置垫铁，垫铁组一般为2平1斜3付垫铁，厚的放下面，斜垫铁应成对使用;并伸出机框约20mm;找正后应焊牢、不许松动;垫铁应放置在设备主受力台板、机框立筋处或地脚螺栓两侧，在不影响二次灌浆的情况下尽量靠近地脚螺栓孔;

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.机壳下半部粗定位：注意厂家的安装标记，通常“A”、“B”号各位一台，就位前注意区分与进出口风管的关系、叶轮旋向等;

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.风机转动组找平、找正：风机主轴与轴承座之间的垂直度采用如下方法找正：将磁力座贴在主轴上，将百分表表头指向轴承外圈或轴承座弹位端面上(既上端盖加工面上);此时旋转主轴一周以上其表针读数不大于0.15mm即可，此读数值为该轴承座与主轴的垂直情况。

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.电动机找平、找正：调整风机与电机主轴同轴度(既联轴器找平找正)。用三块百分表找正，轴向两块、径向一块;每盘动轴90度，记录数据，测量其上下左右的读数，调整同轴度，使其误差≤0.05mm;且两靠背轮之间应有10mm间隙。找正后，复查轴中心高度等部分数据，做好记录。

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.在风机找正后，进行机壳上半部扣盖、集流器与机壳安装就位，两机壳之间应垫石棉绳;拧紧连接螺栓，四边螺栓应受力均匀;以叶轮为基准，再次调整叶轮与喇叭口的间隙。

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.安装进气箱、入口调节挡板门和风机其余部分，调节挡板转动灵活，否则应加润滑油转动、直至转动灵活方能安装;安装时叶板应固定牢靠，与外壳有充分的膨胀间隙;调节操作装置应灵活正确，动作一致、开度指示标记与实际相符;要注意开启方向，不可装反，进气方向与叶轮旋转方向相同。

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.冷却水、润滑油管道布置应符合图纸要求，布置正确、美观，且管道内不得有杂物。

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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