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System for monitoring vibration status during water turbine blade rotation

A technology for monitoring systems and water turbines, applied to measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve problems such as installation difficulties, blade rotor damage, and affecting the normal operation of water turbines, and achieve the effect of convenient installation and simple structure

Inactive Publication Date: 2014-05-14
XIAN DAOHENG TRANSPORTATION EQUIP TECHCO
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Problems solved by technology

As an important equipment for hydroelectric power generation, the water turbine is directly related to the power generation efficiency, and one of the main components of the water turbine is its blades. During the rotation of the blades of the water turbine, due to factors such as uneven distribution of water flow and unbalanced rotor parts, it is easy to cause certain vibrations. If these vibrations continue for a long time, they will cause serious damage to the blades and rotors, and in severe cases, they will break and affect the normal operation of the turbine. Therefore, it is necessary to monitor the vibration of the blades in the rotating state. To install the sensor, considering the parallel factor, it is necessary to install the sensor on each blade, but it is difficult to implement a stable installation project on the blade that often needs high-speed rotation

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  • System for monitoring vibration status during water turbine blade rotation

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Embodiment Construction

[0009] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0010] As shown in the figure, the present invention is a vibration monitoring system when the blades of a water turbine rotate. There is a protective cover 5 outside the rotating blade 6, and four light sensors are arranged at equal intervals in the protective cover 5 relative to the position of the tip of the rotating blade 6. The light emitted by the probe 4 and the laser transmitter 2 enters the corresponding optical sensing probe 4 through the incident optical fiber, and then enters the photoelectric receiver 1 through the outgoing optical fiber, wherein the optical sensing probe 4 is a module including the lens 3 .

[0011] Principle of the present invention is:

[0012] When the water turbine is working, once the rotating blade 6 starts to rotate, a certain rotating blade 6 will generate a pulse signal when it passes through a certain opti...

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Abstract

Disclosed is a system for monitoring vibration status during water turbine blade rotation. A protective cover is arranged outside a rotation blade; four light-sensing probes are arranged at equal intervals at positions, which are corresponding to the blade tip of the rotation blade, inside the protective cover; and light emitted by a laser emitter enters a corresponding light-sensing probe through an incident fiber and then enters a photoelectric receiver through an emitting fiber. By using the system provided by the invention, the vibration during the process of water turbine blade rotation can be stably and reliably obtained, the structure is simple, and the installation is convenient.

Description

[0001] technical field [0002] The invention relates to the technical field of water turbine maintenance, in particular to a vibration monitoring system when blades of a water turbine rotate. Background technique [0003] With the development of society, human needs for energy are becoming more and more diversified, among which the utilization of hydropower energy is particularly important. Hydropower is a completely renewable and clean energy, and it has been widely used in our country at present. As an important equipment for hydroelectric power generation, the water turbine is directly related to the power generation efficiency, and one of the main components of the water turbine is its blades. During the rotation of the blades of the water turbine, due to factors such as uneven distribution of water flow and unbalanced rotor parts, it is easy to cause certain vibrations. If these vibrations continue for a long time, they will cause serious damage to the blades and rotor...

Claims

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Application Information

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IPC IPC(8): G01H9/00
Inventor 不公告发明人
Owner XIAN DAOHENG TRANSPORTATION EQUIP TECHCO
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