A DEVICE FOR DYNAMIC MULTIDIMENSIONAL/TRI-AXIAL DISPLACEMENT MEASUREMENT OF BOILER TUBES IN A BOILER WITH LINEAR VARIABLE DIFFERENTIAL TRANSFORMERS (LVDTS)

摘要

The invention relates to a device for dynamic multidimensional/tri-axial displacement measurement of boiler tubes in a Boiler with Linear Variable Differential Transformers (LVDTs), comprising a rectangular box stand (1) which is rigidly welded on the wall of the CFBC chamber and contains a plurality of holes on the vertical face including top face; a fixture plate (2) bolted on the vertical face of the stand (1), and a LVDT assembly (3-X) is bolted on the top face; at the upper portion of the fixture plate (2), at least two each LVDT sub assembly (3-Y), (3-Z) are mounted to enable displacement measurements at various locations in the direction of Y and Z respectively; at least two LVDT sub assemblies (3-X) to measure displacement of boiler tube in X-direction; each of the LVDT sub assembly (3-X, 3-Y, 3-Z) contains four LVDT holders (8), two each holders at the front and back end to hold a cylindrical barrel (12) of the LVDT disposed at spaced-apart locations and holding a LVDT (9) in a plane along the direction of displacement measurement wherein the axial position of the LVDT (9) is adjustable between the two sets of holders (8), the holders (8) being coupled to at least one bracket (7) by a plurality of long bolts (10) and nuts (11).