Scour monitoring device and scour monitoring method for foundation structure of offshore wind turbine

Abstract

The invention relates to a scour monitoring device and a scour monitoring method for the basic structure of an offshore wind turbine, wherein the scour monitoring device includes a fixed housing, a monitoring component, a controller and a power supply; the fixed housing is provided with a plurality of installation slots from top to bottom The monitoring components are set in one-to-one correspondence with the installation slots, including pressure sensors and monitoring parts; the monitoring parts include a floating body casing, and a control module, a power module and a communication module are arranged in the floating body casing, the power module is connected to the control module, and the control module is connected to the communication module; A first relay is connected in series between the power module and the control module, and the first relay is in a normally open state; the control module is connected to the first relay, and an OR gate is provided between the control module and the first relay; the controller is respectively connected to the pressure sensor and the first relay. A relay, wherein the controller is connected in parallel between the first relay and the OR gate. The monitoring result of the scour monitoring device is accurate and reliable, can work stably for a long time, and can return data in time.

Description

technical field [0001] The invention belongs to the technical field of water scour monitoring, and in particular relates to a scour monitoring device and a scour monitoring method for the basic structure of an offshore wind power unit. Background technique [0002] With the development of new energy sources, offshore wind turbines have made great progress. For offshore wind turbines, their own safety is very important. Under the scouring action of sea waves, scour pits will appear at the pile foundation of offshore wind turbines, which will affect the stability of the pile foundation. Corrosion damages the surface of the pile foundation, and in severe cases, it will cause the collapse of the offshore wind turbine. [0003] At present, non-contact scour monitoring devices are usually used for monitoring the scour monitoring of the infrastructure of offshore wind turbines. For example: patent CN110133666A discloses a monitoring system and method for the scouring state of off...

AI Technical Summary

Problems solved by technology

However, there is a big difference between the scour monitoring of the foundation structure of offshore wind turbines and the scour monitoring of bridges or river beds. The scour monitoring device is directly installed on the seabed near the offshore wind turbine. The maintenance cost of the scour monitoring device is relatively high. If multiple monitoring nodes are installed separately, the measurement results may be inaccurate when severe scour occurs.

Therefore, it is not advisable to directly use the contact scour monitoring device for inland river bridges to monitor the scour of the foundation structure of offshore wind turbines

Moreover, due to the remote location of offshore wind turbines, the offshore environment is difficult to predict, and changes in the scour conditions may occur in a short period of time, or may not occur for a long time after installation, which requires scour monitoring of the infrastructure of offshore wind turbines The device is maintenance-free, and can monitor online for a long time and return data in time, but the existing flushing monitoring device cannot meet this requirement

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