A special tool for manual turning of steam turbines

A technology of manual cranking and special tools, which is applied in the direction of machine/engine, mechanical equipment, engine components, etc., can solve the problems of inaccurate results of centering, inconvenient cranking, etc., and achieves simple structure, convenient disassembly and assembly, Accurate and reliable results

A technology of manual cranking and special tools, which is applied in the direction of machine/engine, mechanical equipment, engine components, etc., can solve the problems of inaccurate results of centering, inconvenient cranking, etc., and achieves simple structure, convenient disassembly and assembly, Accurate and reliable results

CN105736077BActive Publication Date: 2018-11-13AKSU POWER SUPPLY COMPANY STATE GRID XINJIANG ELECTRIC POWER
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  • A special tool for manual turning of steam turbines

Examples

Experimental program
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Effect test

Embodiment

[0017] This embodiment provides a special tool for manual turning of a steam turbine, such as figure 1 As shown, it includes a handle 1, a spur gear 2 installed on the handle 1, a U-shaped perforated support 31 set on the handle 1 for fixing the position of the spur gear 2, and a U-shaped perforated support 31 fixed on the U-shaped perforated hole. The fixed base 32 on the support 31 and the sliding base 4 set on the handle 1 . The size of the handle 1 is φ51×1150mm.

[0018] In this embodiment, the sliding base 4 can slide along the handle 1 to adjust the distance between it and the fixed base 32 ; the positions of the spur gear 2 and the U-shaped perforated support 31 relative to the handle 1 are fixed. The fixed base 32 and the sliding base 4 are provided with a slot 5, the slot 5 is a rectangular round head slot, and the rectangular round head slot is used to fix the fixed base 32 and the sliding base 4 to other devices through bolts.

[0019] In this embodiment, a nut 1...

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Abstract

The invention discloses a special tool for manual turning of a steam turbine. The special tool comprises a handle, a straight gear installed on the handle, a U-shaped perforated support seat installed on the handle in a sleeving manner and used for fixing the position of the straight gear, a fixed base fixed on the U-shaped perforated support seat, and a slide base installed on the handle in a sleeving manner, wherein a nut is welded at one end of the handle or welded at each of the two ends of the handle. The special tool disclosed by the invention is simple in structure, and convenient to detach and install; an electric driving operation is not needed, thus the working efficiency of manual turning is improved; a rotor is turned 90 degrees in place every time, high efficiency and reliable accuracy are achieved, and the mechanical error generated during centring of the rotor of a steam-turbine generator due to a high jitter degree of rotor turning is eliminated; therefore, the numerical precision of centring is improved, the labour intensity of operating personnel is greatly reduced, and the personal injury accidents and equipment damage accidents generated during steel wire rope winding are avoided.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to a special tool for manual turning of a steam turbine. Background technique [0002] The working principle and performance of the barring device: When the barring device is working, the motor drives the large gear ring on the rotor of the steam turbine to rotate through the worm, worm rim, and driving gear, thereby turning the rotor of the turbogenerator. [0003] However, there are problems in the current specific operation. For example, during the overhaul of the steam turbine in Baicheng Power Plant, in the process of centering the rotor, like most small units in power plants, there is no supporting special tool for rotating the rotor. , put into operation, and overhaul period, the following methods are used to rotate the turbogenerator rotor: set up the end face and radial dial indicator on the back wheel of the turbogenerator, debug and check the corresponding va...

Claims

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Application Information

Patent Timeline
13 Nov 2018
Publication
CN105736077B
IPC
F01D25/34
Inventors
谭振武; 李富春