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Endoscopic overhauling device and method for steam turbine control valve

A technology for overhauling devices and steam turbines, applied to instruments, telescopes, optics, etc., can solve problems such as door breakage, cumbersome steps, and long time, and achieve the effects of improving equipment operation rate, improving maintenance quality, and improving equipment technical conditions.

Pending Publication Date: 2021-11-30
HUANENG CLEAN ENERGY RES INST +1
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Problems solved by technology

Therefore, the maintenance operation of the steam control valve of the turbine is not only time-consuming and cumbersome, but also may cause damage to the control valve.

Method used

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  • Endoscopic overhauling device and method for steam turbine control valve
  • Endoscopic overhauling device and method for steam turbine control valve

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Embodiment Construction

[0020] Attached below figure 1 , attached figure 2 , Specific Embodiments The present invention will be described in further detail.

[0021] An endoscopic inspection device for steam turbine door adjustment, including a flexible spring body 4, a grasping mechanism, and an illumination and imaging device 3, the grasping mechanism, illumination and imaging device 3 are all arranged at the front end of the flexible spring body 4, and the illumination and imaging The device 3 is connected to a display module 8 .

[0022] The grabbing mechanism includes two elastic steel bars 1 and a limit block 2, the limit block 2 is arranged on the front end of the flexible spring body 4, the elastic steel bar 1 is arranged on the inner side of the flexible spring body 4, and two rectangular bars are set on the limit block 2 Opening, the front end of the elastic steel bar 1 is bent into the shape of a mechanical claw, and the front end of the elastic steel bar 1 passes through the rectangula...

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Abstract

The invention discloses an endoscopic overhauling device and method for a steam turbine control valve. The endoscopic overhauling device for the steam turbine control valve comprises a flexible spring body, a grabbing mechanism and a lighting and camera shooting device, the grabbing mechanism and the lighting and camera shooting device are both arranged at the front end of the flexible spring body, and the lighting and camera device is connected with the display module. The device can conveniently enter a narrow channel of the steam control valve of the turbine for maintenance operation, so that the maintenance quality of the steam control valve of the turbine is improved, the technical condition of equipment is improved, and the running rate of the equipment is improved.

Description

technical field [0001] The invention belongs to the field of inspection and maintenance of coal-fired power plants, and in particular relates to an endoscopic inspection and inspection device and method for steam turbine valve adjustment. Background technique [0002] The load of steam turbines in thermal power plants is generally adjusted by changing the amount of steam entering the steam turbines. At present, the commonly used adjustment methods include throttling adjustment, nozzle adjustment and sliding pressure adjustment. The characteristic of throttling regulation is that all the steam entering the steam turbine must pass through the steam regulating valve, and then flow to the first stage nozzle. This adjustment method is mainly to adjust the steam volume by changing the opening degree of the steam valve. Because the steam valve has a simple structure and low manufacturing cost, it is widely used in units with various loads. [0003] Since the high-medium-medium-pre...

Claims

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Application Information

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IPC IPC(8): G02B23/24
CPCG02B23/2461G02B23/2476G02B23/2484
Inventor 穆延非周国栋李飞邱旭张波刘鑫
Owner HUANENG CLEAN ENERGY RES INST
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