A safety warning method and system for a bulb type tubular unit based on the Internet of Things

Abstract

The invention discloses a safety early warning method and system for a bulb-type tubular unit based on the Internet of Things, which collects the water pressure of the runner chamber and the water flow of the runner chamber at low speed, normal speed, and high speed respectively; constructs a plane Coordinate system; connect to get the peak broken line, and fine-tune the peak broken line to get the warning line. During the operation of the bulb type tubular flow unit, if the shortest distance between the reference point and the warning line is less than the warning threshold, an alarm will be issued or the speed will be reduced. The speed of the unit and the peak broken line can avoid the repeated operation of the bulb type tubular flow unit near the middle and high speed during operation, causing frequent vibration of the runner chamber. The peak broken line is added as a protection to avoid leakage and weld cracking caused by frequent vibration. , to ensure that the runner chamber is always running at a safe speed. Even if the water pressure in the runner chamber suddenly rises, there is enough time to wait for the bulb type tubular unit to slow down to avoid its violent shock.

Description

technical field [0001] The present disclosure relates to the technical field of bulb-type tubular units and the Internet of Things, in particular to a safety warning method and system for bulb-type tubular units based on the Internet of Things. Background technique [0002] As the main generator type of low water head hydropower station, the bulb tubular unit has the advantages of large reference flow and low water head. However, due to the large water flow in the runner chamber of the bulb tubular unit, the vibration amplitude of the working condition is large during the operation of the bulb tubular unit, resulting in long-term vibration, fatigue and alternating stress. Leakage and weld cracks in the runner chamber of the unit due to vibration will cause serious safety hazards in the bulb tubular unit, resulting in abnormalities in the bulb tubular unit, power supply interruption, and even unit damage and reduction unit life etc. Contents of the invention [0003] The ...

AI Technical Summary

Problems solved by technology

However, due to the large water flow in the runner chamber of the bulb tubular unit, the vibration amplitude of the working condition is large during the operation of the bulb tubular unit, resulting in long-term vibration, fatigue and alternating stress. Leakage and weld cracks in the runner chamber of the unit due to vibration will cause serious safety hazards in the bulb tubular unit, resulting in abnormalities in the bulb tubular unit, power supply interruption, and even unit damage and reduction Phenomena such as unit life

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