SU1399485A1 - Method of fastening flanges of steam turbine vertical joint - Google Patents

Abstract

. The invention relates to turbine construction and m. Used in low pressure cylinders with vertical flanges. The purpose of the invention is to reduce the labor intensity and simplify the fixation technology. The processing of the holes 3 for fasteners and fitting pins is carried out simultaneously. In flanges 1 and 4 of the exhaust part and the cylinder, deaf calibrated and through holes 2 and 5 are made. The flanges are fixed by installing 5 intermediate sleeves 7 in the holes, 3 fingers 8 in the zrison holes 3, and 9 studs in the holes 2. when welding them, it is carried out with the fingers by turning them. Then the sleeves are welded to the flanges of the cylinder, dismantle the fingers and studs and set the tight-fitting pins. 2 Il.

Description

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The invention relates to mechanical engineering, mainly turbine construction, and can be used in low pressure cylinders with their vertical connector flanges.

The purpose of the invention: - reducing the complexity and simplification of technology.

FIG. 1 shows the fixing unit of the flanges of the vertical connector with the installation of temporary technological details; in fig. 2 - the same in the working position.

In the flanges 1 of the exhaust part there are blind calibrated holes 2 and side holes 3, and in the flanges 4 of the cylinder there are through holes 5. In through holes 5 there is an intermediate sleeve 7 fixed by pins 6, into which blind fingers 8 are placed. 2 the stud 9 is screwed, fixed with the help of the bracket 10 and the nut 11. The axial bolt 12 (FIG. 2) is installed in the tight fitting hole 3 and the intermediate sleeve 7.

The method of fixing the flanges is carried out as follows.

The drilling and machining of the holes 3 for fitting the flanges 12 in the flanges 1 and 4 of the vertical connector are made simultaneously with the holes (not shown) for the fasteners along the contour of the vertical connector. At the same time, in the flange 1 of the exhaust part, deaf calibrated holes 2 are made, and in the flanges 4 cylinders - through holes 5 of increased diameter for intermediate sleeves 7 taking into account their possible displacement. With the assembled flanges 1 and 4 of the vertical connector, they are fixed by inserting into the blind, calibrated holes 2 temporary fixtures 9, into tight-fitting openings 3 - temporary fingers 8, and the intermediate sleeve 7 in turn is fitted with an intermediate sleeve 7 simultaneously fitting through the through holes 5 of the pins 6 which are installed to prevent displacement of the intermediate sleeve 7 when it is

and are uniformly circumferentially spaced with a gap of 0.0-0.1 mm. Then, the clamp 10 is put on and using the nut 11, the intermediate sleeves 7 are pressed against the flange 4, after which the intermediate sleeves 7 are welded to the flange 4 (welded around the perimeter). The control of the mixing of the intermediate sleeves 7 during their welding is carried out with the help of temporary fingers 8 by turning them. After welding intermediate sleeves

7, brackets 10, pins 8 and pins 9 are dismounted and the goggle pins 1 12 are installed.

Claims (1)

Invention Formula The method of fixing the flanges of the vertical connector of the steam turbine, which includes machining the holes for fasteners, connecting the cylinder flanges to the flanges of the exhaust part, re-drilling, machining the bore holes and installing the latest field pins, in order to reduce labor intensity and simplify the technology , machining holes for fasteners and fittings are made at the same time, in the flanges of the exhaust part and the cylinder, deaf calibrated and through holes are made, respectively, fix the flanges by installation into through holes of intermediate sleeves, into tight holes — fingers, and into deaf calibrated holes — pin, then intermediate sleeves are welded to the flanges of the cylinder, dismantled Fingers and studs and set up tight pins.