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Method for detecting perpendicularity between turbine high-pressure outer cylinder open surface and datum axis by means of laser tracker

A technology of laser tracker and high-pressure outer cylinder, which is applied in the direction of adopting optical devices, instruments, measuring devices, etc., can solve the problem of affecting the coaxiality, affecting the operating efficiency and safety of the unit, and affecting the steam outlet direction and axial size of the partition, etc. problem, to achieve the effect of improving operational efficiency and operational safety

Active Publication Date: 2014-02-19
HARBIN TURBINE +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] This method introduces the walking error of the CNC machine tool into the detection process, and the main deviation of the verticality is the walking deviation of the machine tool spindle. Usually, the machine tool used for testing and the machine tool used for processing are the same machine tool, so this method cannot be true. to detect the perpendicularity deviation
The perpendicularity between the opening surface of the high-pressure outer cylinder and the reference axis directly affects the coaxiality of the components such as the high-pressure inner cylinder and the partition sleeve and the reference axis during the assembly of the unit, which in turn affects the steam outlet direction and axial size of the partition. The operating efficiency and safety of the unit

Method used

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  • Method for detecting perpendicularity between turbine high-pressure outer cylinder open surface and datum axis by means of laser tracker
  • Method for detecting perpendicularity between turbine high-pressure outer cylinder open surface and datum axis by means of laser tracker
  • Method for detecting perpendicularity between turbine high-pressure outer cylinder open surface and datum axis by means of laser tracker

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specific Embodiment approach 1

[0016] Specific implementation mode 1: A method for detecting the perpendicularity between the opening surface of the high-pressure outer cylinder of the steam turbine and the reference axis using a laser tracker in this embodiment is implemented according to the following steps:

[0017] Step 1: Support the single-half cylinder stably, with the horizontal middle part of the cylinder facing upwards, the lower half-cylinder can be supported by the support pier, and the upper half-cylinder can be supported by the exhaust pipe port, and then clean the first-stage steam inlet positioning surface T1 of the adjustment end, the adjustment The second-stage steam inlet positioning surface T2 of the terminal, the first-stage steam inlet positioning surface G1 of the electrical terminal, the second-stage steam inlet positioning surface of the electrical terminal G2, the steam seal circle A of the electrical terminal, the steam seal circle B of the adjustable terminal, and the steam seal ci...

specific Embodiment approach 2

[0023] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the calibration software utilized after the preheating is completed in step 1 is TrackerCal software. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0024] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, in the front-sight and rear-sight inspection, the rotation and pitch angle errors can only be measured when the error is less than 5 / 1000. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a method for detecting perpendicularity between a turbine high-pressure outer cylinder open surface and a datum axis by means of the laser tracker. The method for detecting the perpendicularity between the turbine high-pressure outer cylinder open surface and the datum axis is used for solving the problem that the perpendicularity between the turbine high-pressure outer cylinder open surface and the datum axis can not be effectively detected in the machining process. The detection method includes the following steps that firstly, a detected surface is cleaned and a laser head is calibrated; secondly, the datum axis is set up; thirdly, point collecting measurement is carried out on an air cylinder crossette; fourthly, the perpendicularity between the turbine high-pressure outer cylinder open surface and the datum axis is measured. The method for detecting the perpendicularity between the turbine high-pressure outer cylinder open surface and the datum axis by means of the laser tracker is used for detecting the perpendicularity between the turbine high-pressure outer cylinder open surface and the datum axis.

Description

technical field [0001] The invention relates to a method for detecting the perpendicularity between the opening surface of a high-pressure outer cylinder of a steam turbine and a reference axis. Background technique [0002] The opening surface of the high-pressure outer cylinder of the steam turbine is the axial installation and positioning surface of the high-pressure inner cylinder of the steam turbine and the partition sleeve and other components. At present, the detection method for the perpendicularity between this plane and the reference axis is only based on the measurement of the processing machine tool. The tool head of the machine tool Clamp a dial indicator and punch it on the opening surface, use the CNC machine tool processing program to make the cutter head and the dial indicator slide on the plane, and measure the distance between the opening surface and the reference axis according to the reading range of the dial indicator Verticality. [0003] This method...

Claims

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Application Information

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IPC IPC(8): G01B11/26
Inventor 江鹏远梁小丹李红倪忠良杨彤张利刚王丹王海凤马宏程
Owner HARBIN TURBINE