A steam turbine low-pressure cylinder shaft seal dimple processing device and method

A processing method and processing device technology, applied to feeding devices, metal processing equipment, metal processing machinery parts, etc., can solve problems affecting the safe and economical operation of the unit, vacuum degree drop, air leakage, etc., and achieve stable and reliable spindle operation without Jamming, eliminating the effect of excessive meshing clearance

Active Publication Date: 2020-12-22
HUAINAN TIANJIAAN POWER GENERATION PLANT ANHUI ELECTRIC POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After many years of continuous operation, the shaft seal dimples of the low-pressure cylinder of the steam turbine will be deformed and leak air, resulting in a decrease in the vacuum degree, which will affect the safe and economical operation of the unit

Method used

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  • A steam turbine low-pressure cylinder shaft seal dimple processing device and method
  • A steam turbine low-pressure cylinder shaft seal dimple processing device and method

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Experimental program
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Effect test

Embodiment 1

[0025] see Figure 1-2 , the present invention provides a steam turbine low-pressure cylinder shaft seal dimple processing device, including a tool holder assembly 1, an upper box 6 and a lower box 13, the lower box 13 is installed below the upper box 6, and the upper box 6 A hollow main shaft 7 is installed between the lower box body 13, and a drive shaft 2 is installed inside the hollow main shaft 7. The tool holder assembly 1 is installed on the outer wall of the upper box body 6 and the lower box body 13. The tool holder assembly 1 is equipped with a boring arm 4, a counterweight 3 is installed at the bottom of the tool holder assembly 1, a motor 5 is installed on the top of the upper box 6, a worm wheel 8 is installed inside the upper box 6, and the bottom of the lower box 13 A base 9 is installed, and the inside of the base 9 is equipped with an axial feed screw nut 11, and the internal thread of the axial feed screw nut 11 is equipped with an axial feed screw 10, and th...

Embodiment 2

[0033] see Figure 1-2 , the present invention provides a steam turbine low-pressure cylinder shaft seal dimple processing device, including a tool holder assembly 1, an upper box 6 and a lower box 13, the lower box 13 is installed below the upper box 6, and the upper box 6 A hollow main shaft 7 is installed between the lower box body 13, and a drive shaft 2 is installed inside the hollow main shaft 7. The tool holder assembly 1 is installed on the outer wall of the upper box body 6 and the lower box body 13. The tool holder assembly 1 is equipped with a boring arm 4, a counterweight 3 is installed at the bottom of the tool holder assembly 1, a motor 5 is installed on the top of the upper box 6, a worm wheel 8 is installed inside the upper box 6, and the bottom of the lower box 13 A base 9 is installed, and the inside of the base 9 is equipped with an axial feed screw nut 11, and the internal thread of the axial feed screw nut 11 is equipped with an axial feed screw 10, and th...

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Abstract

The invention discloses a steam turbine low-pressure cylinder shaft sealing concave nest processing device and method. The device comprises a knife seat assembly, an upper box body and a lower box body; the lower box body is mounted below the upper box body, a hollow main shaft is mounted between the upper box body and the lower box body, the inside of the hollow main shaft is provided with a transmission shaft, the knife seat assembly is mounted on outer walls of one sides of the upper box body and the lower box body, the knife seat assembly is provided with a boring arm, a balancing weight is installed at the bottom of the knife seat assembly, a motor is mounted on the top of the upper box body, a worm wheel is mounted inside of the upper box body, and a base is mounted at the bottom ofthe lower box body. The steam turbine low-pressure cylinder shaft sealing concave nest processing device and method ensures that a set of tooth surfaces meshed with a turbine in the transmission direction of a worm are fitted all the time, impact of the worm tooth surfaces to the meshed turbine tooth surfaces during starting is eliminated, and the cutting torque is balanced.

Description

technical field [0001] The invention belongs to the technical field of dimple processing for shaft seals of low-pressure cylinders of steam turbines, in particular to a device and method for processing dimples of shaft seals of low-pressure cylinders of steam turbines. Background technique [0002] After many years of continuous operation, the shaft seal dimples of the low-pressure cylinder of the steam turbine will be deformed and leak air, resulting in a decrease in the vacuum degree, which will affect the safe and economical operation of the unit. [0003] In order to ensure the operating vacuum of the low-pressure cylinder, the factory equipment department requires that during the overhaul period of the unit, the shaft seal dimple of the low-pressure cylinder should be reshaped on-site to ensure the good working condition of the low-pressure cylinder and the requirements of the operating vacuum degree. Therefore, A steam turbine low-pressure cylinder shaft seal dimple pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B5/00B23Q5/40B23Q5/32
Inventor 王书翼丁锐徐玉龙邵明义
Owner HUAINAN TIANJIAAN POWER GENERATION PLANT ANHUI ELECTRIC POWER CO LTD
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