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Finish machining assisting device for gear starting inner hole of steam turbine high pressure cylinder and finish machining method

An auxiliary device and high-pressure cylinder technology, which is applied in the direction of mechanical measuring devices, adopting mechanical devices, measuring devices, etc., can solve the problems of large errors, high costs, and low measurement accuracy, and achieve reduced measurement errors, low manufacturing costs, and clamping The effect of convenient installation

Inactive Publication Date: 2017-06-20
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low measurement accuracy, large error and high cost when finishing the inner hole of the high-pressure cylinder, and propose a finishing auxiliary device and finishing method for the inner hole of the high-pressure cylinder of the steam turbine.

Method used

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  • Finish machining assisting device for gear starting inner hole of steam turbine high pressure cylinder and finish machining method
  • Finish machining assisting device for gear starting inner hole of steam turbine high pressure cylinder and finish machining method
  • Finish machining assisting device for gear starting inner hole of steam turbine high pressure cylinder and finish machining method

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specific Embodiment approach 1

[0018] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, a steam turbine high-pressure cylinder gear-shifting inner hole finish machining auxiliary device described in this embodiment includes a clamping frame 1, a measuring briquetting block 2, a No. 1 bolt 4 and a No. 2 bolt 5;

[0019] The clamping frame 1 is provided with an opening slot, the upper part of the opening slot is provided with a No. 1 bolt through hole, and the lower part of the opening slot is provided with a No. 2 bolt through hole; the clamping frame 1 is used for conveniently fixing the measuring pressure block 2;

[0020] The No. 1 bolt 4 is used to fix the measuring briquetting block 2 through the No. 1 bolt through hole; and the measuring briquetting block 2 is located at the opening inner hole of the high-pressure cylinder, and the measuring briquetting block 2 is used to increase the processing of the opening inner hole of the high-pressure cylinder Range, so ...

specific Embodiment approach 2

[0023] Specific embodiment 2: This embodiment is to further limit the auxiliary device for finishing the inner hole of a high-pressure cylinder of a steam turbine described in the specific embodiment 1. In this embodiment, it also includes a gasket 3, and the gasket 3 Arranged between the clamping frame 1 and the horizontal mid-section of the high-pressure cylinder 7, the gasket 3 is used to protect the horizontal mid-section of the shift inner hole of the high-pressure cylinder.

[0024] In this embodiment, the gasket 3 is made of copper material, and the copper gasket 3 can better protect the horizontal split surface of the inner hole of the high pressure cylinder.

specific Embodiment approach 3

[0025] Specific implementation mode three: combination figure 1 Describe this embodiment, this embodiment is to further limit a kind of steam turbine high-pressure cylinder gear opening inner hole finishing auxiliary device described in the first embodiment, in this embodiment, measure the material of the briquetting block 2 and the high-pressure cylinder 7 The material is the same.

[0026] In this embodiment, the material of the measuring briquetting block 2 and the high-pressure cylinder 7 are the same, and the deformation of the measuring briquetting block 2 and the high-pressure cylinder 7 can be guaranteed to be the same during the processing, so that the measurement result is more accurate. At the same time, the thickness of the measuring briquetting block 2 is greater than 50 mm, so that the processing range of the opening inner hole is controlled within a reasonable range.

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Abstract

The invention discloses a finish machining assisting device for a gear starting inner hole of a steam turbine high pressure cylinder and a finish machining method and relates to a finish machining assisting technology for the gear starting inner hole of the steam turbine high pressure cylinder in order to solve the problems that during finish machining of a gear starting inner hole of a high pressure cylinder, the measuring precision is low, error is large and cost is high. According to the finish machining assisting device for the gear starting inner hole of the steam turbine high pressure cylinder, a clamping frame is provided with an opening groove which is provided with a first bolt through hole and a second bolt through hole; a first bolt is used for fixing a measurement pressing block which is located at the position of the gear starting inner hole of the high pressure cylinder; and a second bolt penetrate the second bolt through hole. A measuring method sequentially includes the steps that the opening groove of the clamping frame is placed at the position of a flange of a horizontal center-parting face of the high pressure cylinder; the clamping frame is fixed; the measurement pressing block is adjusted; the measurement pressing block is fixed; and the measurement pressing block and the gear starting inner hole are subjected to finish machining at the same time, and the diameter of the gear starting inner hole of the high pressure cylinder is measured in the machining process. The beneficial effects that the measuring error is small, precision is high, cost is low, popularization is facilitated, and the clamping position is not limited are achieved.

Description

technical field [0001] The invention relates to an auxiliary technology for finishing the inner hole of a high-pressure cylinder of a steam turbine. Background technique [0002] When processing the opening hole of the high-pressure cylinder of the steam turbine, due to the structure of the cylinder, the opening hole cannot be integrally processed with the cylinder body. The opening hole is a semicircular structure, and the tolerance of the opening hole of the high-pressure cylinder of the steam turbine is very strict, so , it is necessary to accurately measure the diameter of the opening hole when processing the opening hole of the steam turbine high-pressure cylinder; Accurately measure the actual value of the inner hole diameter of the opening gear, even if the actual value of the inner hole diameter of the opening gear can be measured, the error of the actual value of the inner hole diameter of the opening gear will be very large, and the precision of the opening inner h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/20G01B5/12
CPCG01B5/0002G01B5/12B23Q17/20
Inventor 高岩王红海宗倩梁伟张广东阎文松王龙梅马昌盛
Owner HARBIN TURBINE
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