DE3122810A1

DE3122810A1 - Shaft mounting device

Info

Publication number: DE3122810A1
Application number: DE19813122810
Authority: DE
Inventors: Judson S. 90265 Malibu Calif. Swearingen
Original assignee: Rotoflow Inc
Current assignee: GE Oil and Gas Operations LLC
Priority date: 1981-06-09
Filing date: 1981-06-09
Publication date: 1982-12-30

Abstract

A device for matching and measuring the axial loads on a shaft which is mounted such that it can rotate, in the case of which device the axial load occurs in one of the two axial directions. The shaft (14) which is supported such that it can rotate has two shoulders (42, 44) which point in opposite axial directions and interact with a pair of axial bearings in order to restrict the shaft to a limited axial movement range. Axial bearing rings (50, 58) which interact with the shoulders are located between the shoulders and the bearings (48, 56) and are prestressed in the direction of the bearings by elastic parts (54, 62) which resist the axial movement of the shaft between the bearings. Detection systems (66) are provided in order to measure the axial displacement of the shaft (14) and to provide an input for an axial load indication (70) and control systems (36, 74, 80). A method for preventing damage to the labyrinth seals of the shaft during starting of the equipment is also provided. The system is used to protect the bearings against being overloaded and also to prevent overloading of the labyrinth seals. <IMAGE>

Description

Wellenbefestigungsvorrichtung Die Erfindung bezieht sich auf das Befestigen einer Welle unter besonderer Rücksichtnahme auf die Axialbelastung und deren Steuerung. Shaft Fastening Device The invention relates to the Fastening a shaft with special consideration of the axial load and their control.

Es ist oft von Vorteil, die Axialbelastung zu messen, die von den Axiallagern einer Welle aufgenommen wird. Das Anzeigen solcher Lasten kann die Bedienungsperson befähigen, Beschädigungen der Axiallagerbedingungen zu vermeiden und dadurch die Lebensdauer der Lager und anderer Ausrüstungsgegenstände zu verlängern, die derartigen Belastungen unterworfen sind. Solche Vorrichtungen. neigten zu einer Grenzwirksamkeit, wenn sie nicht eine sehr komplizierte Meßausrüstung zum Messen des Versetzens der Welle und der Axiallast benutzten. Eine derartige komplizierte und aufwendige Ausrüstung war notwendig, weil die sehr begrenzte Axialbewegung derartiger Anordnungen erforderte. Weiterhin waren die Axiallastanzeigesysteme häufig mit Propulsions-It is often beneficial to measure the axial load exerted by the Axial bearings of a shaft is added. The operator can display such loads enable to avoid damage to the axial bearing conditions and thereby the To extend the life of bearings and other equipment that has such Are subject to loads. Such devices. tended to a limit effectiveness, if they do not have very complicated measuring equipment for measuring the displacement of the Shaft and axial load used. Such complicated and expensive equipment was necessary because the very limited axial movement required such arrangements. Furthermore, the axial load indicator systems were often with propulsion

Claims

Shaft fastening device Claims 1. Shaft fastening device with a housing (12, 38, 40) and two axial bearing members (48, 56) in the housing are attached and a shaft (14) rotatably mounted in the axial bearing members, in that the shaft (14) has two radial surfaces (42, 44) which point in opposite axial directions that the device further comprising two thrust bearing rings (50, 58) which are slidable on the shaft are arranged in the vicinity of the Radialflachcn that the Axiallaqerglieder each abut against one of the rings that between the axial bearing rings and the radial surface Springs (54, 62) are arranged and that relative to the housing for detecting the axial displacement the shaft a device (66) is provided and that the shaft in the axial bearing members is arranged displaceably.

2. Apparatus according to claim 1, characterized in that g e k e n n -z e i c h n e t that the bearing rings (50, 58) are rotatably connected to the shaft (14).

3. Apparatus according to claim 1, characterized in that g e k e n n -z e i c h n e t that the device for detecting the axial displacement of the shaft is a proximity transducer (66) and an anomaly on the surface of the shaft.

4. Method for starting a rotating device with an axially movable one Shaft that has a conical part through a conical seal opposite the Housing is sealed, thereby g e k e n n z e i c h ne t that the shaft is axial pushed in a direction away from the small end of the tapered seal (30) becomes when the shaft speed is below the operating range of the rotating device and returning the shaft to the sealed position when the shaft reaches its operating speed has reached.