The method of attachment of the blade kaplan turbine

 

The method is designed for mounting blades of a Kaplan turbine to its rotor. The method of fastening the blades, having bearings in the casing impeller Kaplan turbines, is the introduction into the mating holes of the blade and the pivot arm of the fastening element. The introduction of the fastening element in the mating holes of the blade and the pivot arm through the hole in the housing so that the fastener does not project over the surface of the rotary lever. As a fixing element used pins of circular cross section and the openings in the housing after installation of fasteners stoppered. The method allows for a compact design while achieving high reliability and ease of mounting. 2 Il.

The invention relates to hydromelioration and can be used in the turbines.

The known method of fastening the blades, having bearings in the casing impeller Kaplan turbines and fastened by incorporating into the mating holes of the blade and the pivot arm of the fastening element in the form of a conical pin with thread [1].

A disadvantage of the known sposobu and ample space for free passage of the protruding above the surface of the arm sections of the fixing pin when turning the mounting arm.

The aim of the invention is to increase the compact design with reliability and ease of fastening.

The aim is achieved in that in the method of fastening the blades, having bearings in the casing impeller Kaplan turbines and fastened by incorporating into the mating holes of the blade and the pivot arm of the fastener, the introduction of the fastening element in the mating holes of the blade and a pivoted lever carried out through holes in the housing so that the fastener does not project over the surface of the rotary lever.

Most preferably performed in which as a fixing element used pins of circular cross section, and the holes in the chassis after you install the fasteners are closed by plugs.

The invention is illustrated by drawings, where Fig.1 shows the attachment of the blade in the housing of the impeller of the turbine of Fig.2 - section a-a in Fig.1.

Mounting method contains the following steps: installing the blade 1 in the case of the impeller of the turbine 2 on the supporting surface 3 note: when installing on the shaft of the blade 1 of the rotary lever 4. Then through the holes 5 in the housing 2 in the mating holes 6 of the lever 4 and lop the major elements 7 does not protrude above the surface of the rotary lever 4. After the holes 5 in the housing 2 stoppered 8.

This mounting method allows to minimize the distance between the swing arm 4 and the housing 2, which increases the compactness of the design for achieving high reliability and ease of fastening.

Information source 1. Patent Sweden 136185, CL e from 02.07.46, publ. 17.05.52.

Claims

The method of fastening the blades, having bearings in the casing impeller Kaplan turbines and fastened by incorporating into the mating holes of the blade and the pivot arm of the fastening element, characterized in that the introduction of the fastening element in the mating holes of the blade and the pivot arm through the hole in the housing so that the fastener does not project over the surface of the rotary lever, as a fixing element used pins of circular cross section and the openings in the housing after installation of fasteners stoppered.

 

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FIELD: hydraulic turbines.

SUBSTANCE: in proposed vane support unit of hydraulic turbine guide assembly including guide vane with journals fitted in bearing housings, stop limiting axial displacement of vane provided to permit rotation owing to contact ring made of corrosion resistant steel. Stop and ring are installed in bearing housing of at least one of vane journals and enclose the journal. Stop is made in form of separate solid ring with antifriction layer.

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8 cl, 8 dwg

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