Underwater verticality adjustment device of acoustic Doppler current profiler (ADCP) sensor

Abstract

The invention relates to an underwater verticality adjustment device of an acoustic Doppler current profile (ADCP) sensor, and belongs to the field of hydrologic monitoring. A worm and gear speed changing box is fixedly arranged on a fixed framework which is fixed on a prefabricated foundation, a sleeve of a rocker arm mechanism is in clearance fit with a worm-wheel shaft of the worm and gear speed changing box, a cross axle adjustment mechanism is installed on the fixed framework, the ADCP sensor is arranged on the cross axle adjustment mechanism and is fixedly connected with a linear bearing and a guide rod mechanism of the linear bearing, one end of a transmission mechanism 7 abuts against the sleeve of the rocker arm mechanism, the other end of the transmission mechanism is connected with the linear bearing and the guide rod mechanism of the linear bearing, and the worm and gear speed changing box and the rocker arm mechanism are provided with tensioning mechanisms. The device has the advantages of being small in size, light in weight, precise in positioning, and convenient to install, adjust and maintain, and the like; adjustment stability in the horizontal direction and the vertical direction is good; and compared with the prior art, the device is precise in positioning, can guarantee completeness and reliability of hydrologic data collection, has a self-lock function, and is simple and novel in structure, convenient to use, and strong in practicability.

Description

technical field [0001] The invention relates to the field of hydrological monitoring, in particular to an installation equipment adjustment device installed on a riverbed base for collecting water flow data, especially to an underwater verticality adjustment device for an ADCP sensor. Background technique [0002] ADCP (Acoustic Doppler Velocity Profiler) uses the principle of Doppler effect to obtain the water flow data of the vertical section at its location for flow velocity measurement. ADCP breaks through the traditional mechanical rotation-based sensing current meter, uses an acoustic transducer as a sensor, and the transducer emits acoustic pulse waves, which are reflected by anti-scatterers such as sediment particles and plankton that are unevenly distributed in the water body. Scattering, the signal is received by the transducer, and the flow velocity is calculated by measuring the Doppler frequency shift. ADCP has the characteristics of being able to directly ...

AI Technical Summary

Problems solved by technology

[0003] The traditional ADCP floating platform installation system affects the safety of the floating platform due to the corrosion of the welding points underwater, and it requires underwater robots or divers to install or remove it during maintenance, which is expensive

In the patent CN102785763A, the ADCP installation system of the floating platform has been modified, but the fixing frame is too high, which will affect the walking of the ship, and if it is too low, there will be installation and positioning problems

The LADCP mentioned in the patent CN201569666U avoids the measurement error caused by the excessive angle formed between the steel cable of the hanging instrument frame and the sea level, but the volume of the device is large, which virtually increases the weight and cost of the equipment itself

For a traveling survey ship equipped with a current measuring ADCP sensor, the survey ship cannot complete the task in the event of strong winds and waves, floods and torrents, etc.

Patent CN2025747571U mentions a flow measuring platform. The flow measuring platform is fixed on the bottom of the river with iron anchors, and the platform fixing frame floats in the water using the buoyancy generated by foam floats. The platform has the characteristics of light weight and good stability. When there is a sensor failure, it is difficult to extract the flow measurement platform from the water

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