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Independent manual turning gear and turning gear structure

A manual cranking and transmission connection technology, which is applied to gas turbine devices, jet propulsion devices, engine components, etc., can solve problems such as rotor thermal bending, and achieve the effects of convenient assembly and disassembly, convenient operation and simple structure.

Active Publication Date: 2021-05-07
DONGFANG TURBINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the unit is in a hot state and no cranking device is available, it will cause thermal bending of the rotor

Method used

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  • Independent manual turning gear and turning gear structure
  • Independent manual turning gear and turning gear structure
  • Independent manual turning gear and turning gear structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, in this embodiment, an independent manual cranking device includes a support rod 13, a pressing rod 12 rotatably arranged on the support rod 13, a push rod 11 and a gear 17 rotatably arranged on the upper surface of the pressing rod 12, The center of rotation of the push rod 11 is parallel to the center of rotation of the push rod 12, the side of the push rod 11 far away from the strut 13 is provided with a boss 19 that can be in contact with the push rod 12, and the gear 17 is provided with several pieces that can be connected with the push rod 11. The teeth of the top drive link.

[0023] The barring structure includes a case support seat 20, a case 21 arranged on the case support seat 20, two rotor couplings 22 arranged in the case 21, and the gear 17 is arranged between the two rotor couplings 22 Between and in drive connection with the rotor coupling 22 , the struts 13 are arranged on the housing support base 20 and located below the sid...

Embodiment 2

[0027] On the basis of the above-mentioned embodiments, in this embodiment, the support plate 18 for supporting the strut 13 is provided on the housing support base 20 .

[0028] Utilizing the support plate 18 as the installation base of the strut 13 can improve the stability of the strut 13 and make reasonable use of the space under the casing 21 without occupying the rooting space on the foundation of the steam turbine, thereby improving the space utilization rate. The pressure generated during cranking is transmitted to the casing support seat 20, and the casing 21 will not be subjected to any pressure, thus no additional requirements are imposed on the strength of the casing 21.

[0029] In this embodiment, the support plate 18 is horizontally welded on the housing support base 20 . In this way, the connection strength between the support plate 18 and the housing support base 20 can be improved, and the stability of the support plate 18 can be improved. A diagonal brace c...

Embodiment 3

[0031] On the basis of the above embodiments, in this embodiment, an extension rod 14 is connected to the end of the pressing rod 12 away from the push rod 11 . Utilizing the extension rod 14 can conveniently control the rotation of the pressing rod 12, making the operation more convenient.

[0032] In this embodiment, the extension rod 14 is sleeved in the compression rod 12 . This facilitates the connection or disassembly of the extension bar 14 and the compression bar 12, and makes the operation more convenient when cranking is required. After the cranking is completed, it is convenient to disassemble the extension rod 14 to avoid occupying extra space, and it is convenient to uniformly manage the parts.

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Abstract

The invention discloses an independent manual turning gear and a turning gear structure. The independent manual turning gear comprises a supporting rod, a pressing rod rotationally arranged on the supporting rod, an ejector rod rotationally arranged on the upper surface of the pressing rod and a gear; the rotating center of the ejector rod is parallel to the rotating center of the pressing rod; a boss capable of making contact with the pressing rod is arranged on the side, away from the supporting rod, of the ejector rod; the gear is provided with a plurality of teeth which can be in transmission connection with the top end of the ejector rod. According to the scheme, the independent manual turning gear has the beneficial effects that the independent manual turning gear adopts a connecting rod mechanism and a lever principle, has the advantages of simple structure, convenience in assembly and disassembly and convenience in operation, can be completely independent of an original turning gear, avoids function limitation of a manual turning gear due to damage of parts of the original turning gear, and improves the safety of a unit.

Description

technical field [0001] The invention relates to the technical field of steam turbine and gas turbine power generation, in particular to an independent manual turning device and turning structure. Background technique [0002] The shafting of steam turbines and gas turbines must be equipped with a turning device to eliminate temporary bending of the rotor due to long-term parking and prevent thermal bending of the rotor. The turning device is generally driven by an electric motor (a few are driven by hydraulic pressure). However, in order to prevent the electric (or hydraulic) cranking device from being unavailable during power failure or other failures, it is very necessary for the unit to have a manual cranking function. The traditional method in the industry is to add a special wrench to the tail of the turning motor to turn the motor, so as to drive the turning device to rotate and turn the rotor. This manual cranking function is realized in combination with the original...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/34F01D25/00F02C7/268
CPCF01D25/34F01D25/00F02C7/268
Inventor 段增辉谭俊欧楚雄杨晖卢平邱健李继朝李进周赵伟吴婷陈娇红王涛高风
Owner DONGFANG TURBINE CO LTD
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