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Water turbine guide vane shear pin monitoring device

A monitoring device and a technology for cutting pins, which are used in mechanical equipment, engine components, machines/engines, etc., to achieve good results and avoid cable corrosion and damage.

Pending Publication Date: 2022-07-15
HUANENG LANCANG RIVER HYDROPOWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve many problems existing in the shear pin of the guide vane of the hydraulic turbine, the present invention provides a monitoring device for the shear pin of the guide vane of the hydraulic turbine

Method used

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  • Water turbine guide vane shear pin monitoring device

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] The monitoring device for the shear pin of the guide vane of the hydraulic turbine provided by the present invention includes a casing 10 provided on a cylinder body 19 with a cavity therein. The cylinder body 19 has a shear rod 1 in it, wherein: the casing 10 has a cavity inside the casing 10 . There is a wireless transmitter 11 and a coil 8 of a built-in iron core 7 connected to it, the left side of the coil 8 is provided with a magnet slider 5 that is matched with it, and the magnet slider 5 is connected with the shear rod 1 through a transmission mechanism;

[0014] The transmission mechanism includes an arc-shaped spring sheet 12 whose one end is connected with the magnet slider 5 and the other end is connected with the iron core 7 and protrudes downward. The downward protrusion of the arc-shaped spring sheet 12 is connected with the upper end of the push ro...

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Abstract

The invention provides a water turbine guide vane shear pin monitoring device which comprises a shell arranged on a cylinder and internally provided with a cavity and a shear rod arranged in the cylinder, and is characterized in that a wireless transmitter and a coil connected with the wireless transmitter and internally provided with an iron core are arranged in the cavity of the shell, and a magnet sliding block connected with the coil in a matched mode is arranged on one side of the coil; the magnet sliding block is connected with the shearing rod through a transmission mechanism. After the shearing rod is sheared off, the push rod moves under the action of the energy storage spring to extrude the arc-shaped spring piece, and meanwhile, the push pin on the push rod drives the lever to extrude the arc-shaped spring piece together, so that enough driving force is provided to enable the arc-shaped spring piece to drive the magnet sliding block to move upwards, magnetic lines of force are cut, and induced current is generated in the coil; the problems that the space is limited, the cable is difficult to lay, the cable is easily affected with damp to be corrupted and damaged, the installation, the maintenance and the replacement are inconvenient and the like are solved, and the device is practical, reliable and good in monitoring effect.

Description

technical field [0001] The invention relates to a shear pin for guide vanes of a water turbine, in particular to a shear pin for guide vanes of a water turbine with an alarm function, which belongs to the technical field of automatic control of hydropower stations. Background technique [0002] There are many types of annunciators for shearing pins of guide vanes in existing turbines, such as travel switch type, rod type, pneumatic type, etc. The collection and transmission of shearing pin shearing signals are all collected and transmitted in a wired manner. These shear pins have the following problems due to the structure and other reasons: first, the space of the turbine room of the hydropower station is limited, the cable laying is difficult, and the installation, maintenance and replacement are inconvenient; It is difficult to waterproof the annunciator contacts and cable joints, which is easy to cause a short circuit of the contacts and false alarms. Third, the instanta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B11/00G08B25/10
CPCF03B11/00F03B11/008G08B25/10Y02E10/20
Inventor 王云飞杨强谷定洪范鹏飞韦杰文杨庆山熊智丁威沈新苍
Owner HUANENG LANCANG RIVER HYDROPOWER
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