Water turbine generator set servomotor installation precision measurement method based on laser tracking measurement
A technology of laser tracking measurement and generator set, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of servomotor installation accuracy and construction period, low operating efficiency, low accuracy and reliability, etc., to achieve Effects of improving measurement accuracy and reliability, improving work efficiency, and overcoming cumbersome steps
Active Publication Date: 2021-02-05
CHINA GEZHOUBA GRP SURVEY DESIGN CO LTD +1
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Problems solved by technology
The accuracy and reliability of this measurement method are not high, and the operating efficiency is very low, which has a great impact on the installation accuracy and construction period of the servomotor.
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[0022] Such as Figure 1 ~ Figure 2 Among them, a precision measurement method based on laser tracking measurement hydroelectric generator set servomotor installation, it includes the following steps:
[0023] Step 1, measure the circumference and elevation of the earring hole 1 of the control ring that has been installed in place;
[0024] Step 2, using the circle fitting method to obtain the coordinates of the center of the earring hole 1 of the control ring, and establish the installation coordinate system;
[0025] Step 3: Measure the circumference and elevation of the servomotor piston rod 3 cylinder and the servomotor piston rod 3 fully extended and fully retracted states in the installation coordinate system, and use the circumference fitting method Get its center coordinates;
[0026] Step 4, analyze and calculate to obtain the installation space position and attitude parameters of the servomotor.
[0027] Step 1: Set up a laser tracker on the control ring between t...
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The invention relates to a water turbine generator set servomotor installation precision measurement method based on laser tracking measurement. With a three-dimensional laser tracking measurement technology, the method comprises the following steps: accurately measuring the circumferences of two earring holes in a control ring, solving the circle center coordinates of the two earring holes by adopting a circumference fitting method, and establishing a set installation coordinate system; measuring circle center coordinates and elevations of a servomotor piston rod cylinder and an end pin holeof the servomotor piston rod cylinder in two states of complete extension and complete retraction respectively; finally, calculating the direction and elevation of the servomotor piston rod in a unitinstallation coordinate system, and calculating the span between a left servomotor and a right servomotor. According to the invention, tedious steps in a traditional measurement method adopted for installation of an original servomotor are eliminated, and the method has the characteristics of improving the measurement precision and reliability and improving the operation efficiency.
Description
technical field [0001] The invention belongs to the technical field of hydroelectric generating set servomotor installation, and relates to a precision measurement method for hydroelectric generating set servomotor installation based on laser tracking measurement. Background technique [0002] For the installation of hydroelectric generator servomotors, the current common measurement method is first to stretch the horizontal piano wire above the design position of the servomotor along its axis, then hang the weight wire on the horizontal piano wire, and use the electric measurement method to detect the relay The plane installation position and direction of the servomotor; use a precision level to detect the installation elevation and level of the servomotor. The accuracy and reliability of this measurement method are not high, and the operating efficiency is very low, which has a great impact on the installation accuracy and construction period of the servomotor. Contents ...
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IPC IPC(8): G01B11/00G01B11/02
CPCG01B11/00G01B11/02
Inventor 郭光文吴光富江小兵刘宇鉴程志华卫书满邱章云曹国华曹廷根姚应盖
Owner CHINA GEZHOUBA GRP SURVEY DESIGN CO LTD