CN104406507A

CN104406507A - Stator curve and sinkage measuring method used in 1000MW generator stator transporting and closing process

Info

Publication number: CN104406507A
Application number: CN201410706841.4A
Authority: CN
Inventors: 梁洪涛; 王国海; 牟松; 刘阿丽; 姜永慧; 关达生
Original assignee: Harbin Electric Machinery Co Ltd
Current assignee: Harbin Electric Machinery Co Ltd
Priority date: 2014-11-28
Filing date: 2014-11-28
Publication date: 2015-03-11

Abstract

The invention discloses a stator curve and sinkage measuring method used in a 1000MW generator stator transporting and closing process. By the stator curve and sinkage measuring method, an accumulative error in a past indirect stator curve and sinkage measuring reference link in the generator stator transporting and closing process is eliminated; by virtue of the characteristic that the self sinkage of a measuring reference inside a generator stator transporting and assembling structure, namely a connecting rod group, is basically unchanged before and after closing, measuring points at the two ends of a stator are transferred to the lower surface of a lengthening section of the connecting rod group, so that the utilization of a micrometer gauge becomes possible, the measurement process is simplified and direct, interference from external factors is eliminated, measurement data is accurate, and a monitoring requirement can be met.

Description

Car process stator bending subsidence measuring method is closed in the transport of 1000MW generator unit stator

Technical field: the present invention relates to the transport of a kind of 1000MW generator unit stator and close car process stator bending subsidence measuring method.

Background technology: the overall transportation by railroad scheme of 1000MW generator unit stator adopts the transport interface unit of transport form of flanges, transport interface unit is the critical component of schnabel car transport 1000MW generator unit stator, be related to the integrality of vehicle, be responsible for the transmission of static(al) and transport shocks power, the huge centre-point load applied by clamp beam pin-and-hole and compression leg will be delivered to the positions such as support crust by transport interface unit; Because the overall transportation by railroad scenario-frame of 1000MW generator unit stator is complicated, relate to the structures such as transport flange, coupling bolt, direct connection pitman shaft, above-mentioned parts and generator unit stator become vehicle rail structure after conjunction car, are related to Exploration on Train Operation Safety; After entrucking, textural association distortion causes stress distribution situation of change complicated, as load step and the unreasonable part-structure local stress that very easily causes of prestress parameter exceed permissible value, harm transportation safety even causes serious driving accident, so the preliminary work before entrucking, comprise the connecting installation step and must strictly control of transport interface unit and generator unit stator of transport flange, coupling bolt, direct connection pitman shaft, otherwise stator cannot be reached connect parameter and correct construction pre-stress parameter with the correct of vehicle; The inspection work whether above-mentioned installation step and operation meet the demands is very important, during conjunction car, stator bending subsidence amount and this bending subsidence amount variable quantity are within a certain period of time that car overall status parameter is the most intuitively closed in reflection, can avoid the various errors that dynamometry foil gauge produces, be the critical data that conjunction car step must be monitored;

Conventional art all adopts extraneous object of reference measuring method, namely using track or draw steel wire etc. as the method for indirect inspection object of reference, because stator bending subsidence amount is very little, generally be no more than 3mm, but namely the length of stator measure the scope that relates to more than 10m, be subject to track flatness, the impacts such as steel wire vibration, measuring accuracy requirement cannot be met, vehicle deformation situation also impacts measurement data, measurement result is difficult to judge to close car situation, load step is caused repeatedly to carry out, labor intensive material resources, affect or delay the arrangement of movement plan, and leave over transportation safety hidden danger.

Summary of the invention: the object of this invention is to provide the transport of a kind of 1000MW generator unit stator and close car process stator bending subsidence measuring method, that eliminates that previous methods exists the excessive and vehicle deformation of measuring error affects problem, the demand of closing car correction judgement can be met, avoid causing and close car step repeatedly, eliminate hidden danger, ensure the safety of generator unit stator transport.

Technical scheme of the present invention is: car process stator bending subsidence measuring method is closed in a kind of 1000MW generator unit stator transport, it is characterized in that: before closing car, clock gauge is arranged in generator unit stator lower pallet, make the upper surface of clock gauge contact pitman shaft group long joining section, by clock gauge reading playback zeroing, after conjunction car, the reading of clock gauge is stator bending subsidence amount data;

Technique effect: clock gauge is arranged on measurement supporting plate owing to present invention employs, and measure supporting plate and be arranged on generator unit stator centre, this position is generator unit stator bending subsidence and is out of shape maximum position, bending subsidence distortion is produced under the Moment that generator unit stator causes in the clamping force of schnabel car, downward deformation displacement can be produced relative to two ends in the middle part of generator unit stator, pitman shaft group two ends are fixed on the connection pole socket of transport flange, due to the effect of pretightning force, pitman shaft group is in tensioned state always, the distortion although generator unit stator bends, but the tensioned state of pitman shaft group does not change substantially, the upright position of pitman shaft group is consistent with the upright position at generator unit stator two ends, the upright position of transport flange-namely all the time, and the bending subsidence distortion relative stator two ends that generator unit stator followed by the clock gauge be arranged on measurement supporting plate move down, so the reading of clock gauge is generator unit stator close the bending subsidence deflection after car, this invention removes the cumulative errors that indirect inspection reference link in the past produces, the sag of chain of assembly structure internal measurement object of reference and pitman shaft group self is utilized to close feature substantially constant before and after car, by measurement procedure simplification, directly, eliminate the interference of extraneous factor, measurement data is accurate, meets detection requirement.

Accompanying drawing illustrates:

Fig. 1 is schematic diagram of the present invention.

Embodiment:

As shown in Figure 1, be arranged in generator unit stator 2 lower pallet 3 by clock gauge 1, make the upper surface 6 of clock gauge contact 4 contact connection bar group long joining section 5 before closing car, by clock gauge 1 reading playback zeroing, after conjunction car, the reading of clock gauge 1 is stator bending subsidence amount data, owing to present invention employs, clock gauge is arranged on measurement supporting plate, and measure supporting plate and be arranged on generator unit stator centre, this position is generator unit stator bending subsidence and is out of shape maximum position, bending subsidence distortion is produced under the Moment that generator unit stator causes in the clamping force of schnabel car, downward deformation displacement can be produced relative to two ends in the middle part of generator unit stator, pitman shaft group two ends are fixed on the connection pole socket of transport flange, due to the effect of pretightning force, pitman shaft group is in tensioned state always, the distortion although generator unit stator bends, but the tensioned state of pitman shaft group does not change substantially, the upright position of pitman shaft group is consistent with the upright position at generator unit stator two ends, the upright position of transport flange-namely all the time, and the bending subsidence distortion relative stator two ends that generator unit stator followed by the clock gauge be arranged on measurement supporting plate move down, so the reading of clock gauge is generator unit stator close the bending subsidence deflection after car, this invention removes the cumulative errors that indirect inspection reference link in the past produces, the sag of chain of assembly structure internal measurement object of reference and pitman shaft group self is utilized to close feature substantially constant before and after car, by measurement procedure simplification, directly, eliminate the interference of extraneous factor, measurement data is accurate, meets detection requirement.

Claims

1. car process stator bending subsidence measuring method is closed in a 1000MW generator unit stator transport, it is characterized in that: before closing car, clock gauge (1) is arranged in generator unit stator (2) lower pallet (3), make the upper surface (6) of clock gauge contact (4) contact connection bar group long joining section (5), by clock gauge (1) reading playback zeroing, after conjunction car, the reading of clock gauge (1) is stator bending subsidence amount data.