Pin dismounting device used when stator part sleeve of turbine is repaired

A steam turbine and pin technology, which is applied in the field of pin removal devices when repairing the stator casing of a steam turbine, can solve the problems such as difficulty in taking out the positioning pins normally, high transportation and repair costs of machine tools, affecting the production cycle of new products, and the like. The effect of low repair cost and simple operation

Active Publication Date: 2017-06-09
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem that when the existing steam turbine stator casing is repaired, the pin is corroded so that the pin is bonded to the body of the stator casing, which makes it difficult to take out the positioning pin normally, the cost

Method used

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  • Pin dismounting device used when stator part sleeve of turbine is repaired
  • Pin dismounting device used when stator part sleeve of turbine is repaired
  • Pin dismounting device used when stator part sleeve of turbine is repaired

Examples

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Example Embodiment

[0034] Specific implementation mode 1: Combination Figure 1-9 Description of this embodiment, this embodiment of the steam turbine stator sleeve repair pin removal device, the device consists of a cylindrical shell 1, two first connecting rods 2, two second connecting rods 3, two U-shaped frames 4, brackets 5 and screw 6;

[0035] The cylindrical shell 1 is composed of a circular upper top plate, a circular lower bottom plate, and an arc-shaped connecting plate between the circular upper top plate and the circular lower bottom plate; the center of the circular upper top plate is processed with a through hole; the center of the circular lower bottom plate Through holes are processed; the edge of the circular bottom plate is machined with two symmetrical chamfered grooves, and the circular bottom plate is processed with four waist-shaped through holes. The center line of any waist-shaped through hole is aligned with the circular bottom plate. The radii of the four waist-shaped th...

Example Embodiment

[0050] Specific embodiment two: This embodiment is different from the specific embodiment one in that the material of the pin is high-speed steel. The other steps and parameters are the same as in the first embodiment.

Example Embodiment

[0051] Specific embodiment three: This embodiment is different from specific embodiment one or two in that the material of the first connecting rod 2 is high-speed steel. The other steps and parameters are the same as in the first or second embodiment.

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Abstract

The invention discloses a pin dismounting device used when a stator part sleeve of a turbine is repaired, and a pin dismounting device is designed. The problems that when an existing turbine stator part sleeve is repaired, due to rusting of a pin, the pin and a stator part sleeve body are bonded, consequently, the positioning pin is very difficult to take out, and the transporting and repairing cost is high need to be solved. The device is composed of a cylinder shell, first connecting rods, second connecting rods, U-shaped frames, a support and a screw. The cylinder shell is sleeved with the support. The end, provided with a cube, of the screw sequentially penetrates a through hole machined in the center of a circular upper top plate of the cylinder shell and a screw hole machined in the center of the cross-shaped upper surface top face of the support and stretches out of the cross-shaped upper top face. The device is easy to operate, pin dismounting can be conducted on the premise that a machine tool is not occupied, the repairing cost is low, and large-range popularization is convenient. The device is suitable for pin dismounting.

Description

technical field [0001] The invention relates to a device for removing pins during the repair of the stator casing of a steam turbine. Background technique [0002] The steam turbine unit needs to be overhauled regularly, and the components are replaced or returned to the factory for maintenance according to the degree of wear and tear. When returning to the factory for maintenance, some problems that have not been encountered in normal production are often encountered. Among them, the mid-section positioning pins are often found when the stator part is returned to the factory. Due to the scaling and corrosion of the steam turbine unit in the working state, the pins and the body of the stator part are bonded together, and it is difficult to take out the positioning pins normally. The diameter of the pin hole is increased, and the other half of the matched stator casing pin hole is enlarged according to this size, and a new pin is used. This technology is difficult to solve th...

Claims

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Application Information

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IPC IPC(8): B25B27/00
CPCB25B27/00
Inventor 高岩刘万新梁伟张广东阎文松王龙梅
Owner HARBIN TURBINE
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