CN102689205A

CN102689205A - Clamping device for double-top turning processing of steam turbine rotor

Info

Publication number: CN102689205A
Application number: CN2012101953176A
Authority: CN
Inventors: 杨东波; 高岩; 刘晓利; 张玮; 蔡川
Original assignee: Harbin Turbine Co Ltd
Current assignee: Harbin Turbine Co Ltd
Priority date: 2012-06-14
Filing date: 2012-06-14
Publication date: 2012-09-26

Abstract

The invention provides a clamping device for the double-top turning processing of a steam turbine rotor and relates to a clamping device, in particular to the clamping device for the double-top turning processing of the steam turbine rotor. The clamping device aims at solving the problems that in the double-top turning processing of the existing steam turbine rotor, a top point deforms under the effect of the clamping force of a clamp disc on the rotor, and the coaxiality of the double-top turning processing is influenced. The clamping device comprises an upper half frame and a lower half frame, wherein the upper half frame is formed into a bottom-free trapezoid by sequentially connecting a first upper half frame prism, a second upper half frame prism and a third upper half frame prism in an end-to-end way, two ends of the upper half frame are respectively provided with connecting lugs, the lower half frame is formed into a bottom-free trapezoid by sequentially connecting a first lower half frame prism, a second upper lower frame prism and a third lower half frame prism in an end-to-end way, two ends of the lower half frame are respectively provided with connecting lugs, and the upper half frame and the lower half frame are buckled together through screw bolt pairs arranged on the connecting lugs. The clamping device is used for realizing the non-rigid clamping and the floating connection of the double-top turning processing rotor.

Description

Clamping device is used in a kind of turbine rotor Double Tops turning processing

Technical field

The present invention relates to a kind of clamping device, be specifically related to a kind of turbine rotor Double Tops turning processing and use clamping device.

Background technology

Along with the development of steam turbine technology, in order to improve the coal-fired thermal efficiency, the installed capacity of steam turbine unit is also increasing; The member profile structure of corresponding steam turbine is tending towards large complicatedization, the also relative overlength, overweight of the core component rotor of steam turbine, and the amount of deflection deformation that rotor produces is too big, and (rotor is the linear axis of a rigidity in theory; And actual because what appear automatically is an axle that curvature is arranged, and large rotor is owing to overlength, overweight, especially the impeller of rotor is positioned at the middle part; Weight also concentrates on this, in sleeping carriage processing, rotates the centrifugal force that produces at a high speed; Its amount of deflection deformation is exaggerated have been changed); During rotor Double Tops turning processing axle journal, depending merely on top strength is impossible drive the rotor rotation, in the time of can only Double Tops; One end of rotor needs with the fixture block of the chuck of lathe it to be clamped and drives its rotary processing; And this just exists rotor when rotation frictional force double action of producing after with the clamping of chuck fixture block to rotor of top frictional force with the centre of rotor hole, exists the problem of location, if the desirable stiff shaft of rotor is just unimportant; And exist amount of deflection deformation like above-mentioned rotor; Because the moment of torsion that chuck produces the clamping of rotor much larger than top and the frictional force moment of torsion centre of rotor hole, will make toply for chuck distortion down to the effect of the clamping force of rotor, influenced the concentricity that Double Tops turning is processed again.

Summary of the invention

The present invention is for solving in the existing turbine rotor Double Tops turning processing, top be chuck distortion down to the effect of the clamping force of rotor, has influenced the problem of the concentricity that Double Tops turning processes, and then proposes a kind of turbine rotor Double Tops turning and process and use clamping device.

The present invention addresses the above problem the technical scheme of taking to be: the present invention includes first frame and second frame; First frame is prismatic by first first frame, second first frame is prismatic and the prismatic head and the tail of the 3rd first frame to be in turn connected into a no end trapezoidal; The two ends of first frame are respectively equipped with engaging lug; Second frame is prismatic by first second frame, second second frame is prismatic and the prismatic head and the tail of the 3rd second frame to be in turn connected into a no end trapezoidal; The two ends of second frame are respectively equipped with engaging lug; To lumping together, first first frame is prismatic, second first frame is prismatic, the 3rd first frame is prismatic, first second frame is prismatic, second second frame is prismatic and the 3rd second frame is prismatic forms closed hexagon inner chamber through connecting bolt on the engaging lug for first frame and second frame, closed hexagon inner chamber just and the periphery of connected piece tangent.

The invention has the beneficial effects as follows: the present invention reaches the non-rigid clamping of turbine rotor with second frame combination through first frame and is connected with the unsteady of fixture block of horizontal lathe; Avoided the generation of crossing the location of rotor processing, the bad problem of concentricity that the Double Tops of also having avoided consequent top distortion to cause add; The present invention is simple in structure, makes easily, and cost is low, is convenient to use on a large scale.

Description of drawings

Fig. 1 is an overall structure sketch map of the present invention, and Fig. 2 is a front view of the present invention, and Fig. 3 is the left view of Fig. 2, and Fig. 4 is the vertical view of Fig. 2.

The specific embodiment

The specific embodiment one: combine Fig. 1 to Fig. 4 that this embodiment is described; The said a kind of turbine rotor Double Tops turning processing of this embodiment comprises first frame 1 and second frame 2 with clamping device; It is trapezoidal that first frame 1 is in turn connected into a no end from beginning to end by the prismatic 1-1 of first first frame, the prismatic 1-2 of second first frame and the prismatic 1-3 of the 3rd first frame; The two ends of first frame 1 are respectively equipped with engaging lug 4; It is trapezoidal that second frame 2 is in turn connected into a no end from beginning to end by the prismatic 2-1 of first second frame, the prismatic 2-2 of second second frame and the prismatic 2-3 of the 3rd second frame; The two ends of second frame 2 are respectively equipped with engaging lug 4; First frame 1 lumps together through 5 pairs of connecting bolts on the engaging lug 4 with second frame 2, and the prismatic 1-1 of first first frame, second first frame prism 1-2, the prismatic 1-3 of the 3rd first frame, the prismatic 2-1 of first second frame, the prismatic 2-2 of second second frame and the prismatic 2-3 of the 3rd second frame form closed hexagon inner chamber, and closed hexagon inner chamber periphery lucky and connected piece is tangent.

The specific embodiment two: combine Fig. 1 and Fig. 2 that this embodiment is described; On the madial wall of the said a kind of turbine rotor Double Tops turning processing of this embodiment with the prismatic 1-1 of first first frame of first frame 1 of clamping device, on the madial wall of the prismatic 1-2 of second first frame, be equipped with rubber sheet gasket 3 on the madial wall of the prismatic 1-3 of the 3rd first frame, on the madial wall of the prismatic 2-1 of first second frame of second frame 2, on the madial wall of the prismatic 2-2 of second second frame, be equipped with rubber sheet gasket 3 on the madial wall of the 3rd second frame prism 2-3.Pad 3 in this embodiment has guaranteed the non-rigid clamping of first frame 1 with 2 pairs of turbine rotors of second frame.Other composition and annexation are identical with the specific embodiment one or two.

Operation principle

When the present invention uses; First frame 1 clamps turbine rotor with second frame 2; Then the fixture block on the chuck of horizontal lathe is removed; Two fixture blocks that only keep 180 ° of symmetries; To be placed the chuck place of horizontal lathe by the turbine rotor that first frame 1 and second frame 2 clamp, one of first frame 1 first frame engaging lug 1-4 clamps horizontal lathe chuck come-up motion block with corresponding second frame engaging lug 2-4 on second frame 2, has so just realized the non-rigid clamping to Double Tops turning processing rotor, unsteady connection.

Claims

1. clamping device is used in a turbine rotor Double Tops turning processing; It is characterized in that: said a kind of turbine rotor Double Tops turning processing comprises first frame (1) and second frame (2) with clamping device; It is trapezoidal that first frame (1) is in turn connected into a no end from beginning to end by first first frame prismatic (1-1), second first frame prismatic (1-2) and the 3rd first frame prismatic (1-3); The two ends of first frame (1) are respectively equipped with engaging lug (4); It is trapezoidal that second frame (2) is in turn connected into a no end from beginning to end by first second frame prismatic (2-1), second second frame prismatic (2-2) and the 3rd second frame prismatic (2-3); The two ends of second frame (2) are respectively equipped with engaging lug (4); First frame (1) is gone up connecting bolt (5) to lumping together with second frame (2) through engaging lug (4); First first frame prismatic (1-1), second first frame prismatic (1-2), the 3rd first frame prism (1-3), first second frame prismatic (2-1), second second frame prismatic (2-2) and the 3rd second frame prismatic (2-3) form closed hexagon inner chamber, and closed hexagon inner chamber periphery lucky and connected piece is tangent.

2. clamping device is used in said a kind of turbine rotor Double Tops turning processing according to claim 1; It is characterized in that: on the madial wall of first first frame prismatic (1-1) of first frame (1), on the madial wall of second first frame prismatic (1-2), be equipped with rubber sheet gasket (3) on the madial wall of the 3rd first frame prismatic (1-3), on the madial wall of first second frame prismatic (2-1) of second frame (2), on the madial wall of second second frame prismatic (2-2), be equipped with rubber sheet gasket (3) on the madial wall of the 3rd second frame prismatic (2-3).