H-ADCP flow meter protection device for hydrological monitoring

Abstract

The invention discloses an H-ADCP flow meter protection device for hydrological monitoring. The protection device is bullet-shaped as a whole, and comprises a bullet tail protection cover, an in-bullet protection cylinder and a bullet cap protection cover, wherein the bullet tail protection cover and the bullet cap protection cover are symmetrically arranged at two ends of the in-bullet protectioncylinder, the bullet cap protection cover is a hydrophilic end, and the bullet tail protection cover is a hydrophobic end. Through the bullet-shaped protection shell provided with a plurality of drain holes, the inlet and outlet water pressure of the whole device in water can be balanced, and the damage of water flow pressure to the protection device shell and the winding of the fixing rod are avoided; meanwhile, the clamping assembly is arranged to fix the H-ADCP flow meter, the position of the H-ADCP flow meter in the protection device is prevented from changing, the clamping assembly can be freely adjusted, the device is suitable for fixing H-ADCP flow meters of different models, and the device has the advantages of being reasonable in structural design, good in protection effect and convenient to use.

Description

technical field [0001] The invention relates to the technical field of hydrological monitoring equipment, in particular to an H-ADCP current meter protection device for hydrological monitoring. Background technique [0002] Hydrological monitoring refers to a complex and comprehensive systematic project that monitors, measures, analyzes and warns of the temporal and spatial distribution and variation of natural water through scientific methods; Hedi Reservoir (Canal Estuary) was established in January 1960, mainly for To collect hydrological data at the head of Qingnian Canal and to discuss hydrological laws. It is a regional representative station for the hydrological division of the Lianjiang hilly area and is designed to meet the needs of the control and operation of the Hedi Reservoir. It is a second-class precision station; the test items are water level and flow; [0003] This station is a manually excavated channel with a straight length of 500m. The section is stable...

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Problems solved by technology

[0003] This station is a manually excavated channel with a straight length of 500m. The section is stable. The riverbed is weathered rock without debris in the water. The hydraulic factors are good. For a hydraulic structure such as a ship lock, the water flow is regulated by a large mountain pond and then enters the canal; during the smooth flow period, the station adopts the single-line method of water level and flow to push the flow. The water flow provided by the power station at the canal head of the reservoir is pushed by the method of connecting the actual measured flow process line; since the original relationship between water level and flow has been changed during the jacking period due to the control of the downstream control gate, only the water flow provided by the canal head power station of Hedi Reservoir can be used. The daily average water flow at the power station mouth is push flow, and the flow data is provided by the Hedi Reservoir Canal Head Power Station. It has not been measured by ratio measurement, and there is a certain degree of uncertainty in the accuracy of the data;

[0004] After on-site investigation and analysis of the section, water level and flow velocity data of the Hedi Reservoir (Yunhekou) station, H-ADCP is selected to monitor the hydrological conditions of the artificial channel. During the use of H-ADCP, the instrument will flow to the There are three scattered sound waves (like a flashlight beam), one vertical beam and two horizontal beams; if the horizontal wave (here only considers the horizontal beam) is blocked by foreign objects, hits the water surface or hits the bottom of the river, the measurement accuracy will be affected, and The H-ADCP has been submerged in the nozzle for a long time, and it is easy to be damaged by the collision of floating objects in the water. Therefore, it is urgent to design a device that can protect the H-ADCP, prevent foreign objects from blocking the H-ADCP, and prevent water from being blocked. Floating objects cannot collide with the H-ADCP device, so as to ensure the measurement accuracy of H-ADCP and the safety of instruments and equipment

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