Ultrasonic focused river sediment concentration online measuring instrument

A focused, ultrasonic technology, used in measurement devices, scientific instruments, suspensions and porous material analysis, etc., can solve problems such as instability, bulky, expensive, etc., to improve utilization, lateral resolution and sensitivity. , the effect of scattering attenuation reduction

Active Publication Date: 2017-05-31
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some developed countries have produced ultrasonic measuring instruments such as the OPUS series that can measure in high concentrations, but they are bulky and very expensive
Although there have been many studies on the measurement of river sediment parameters based on the principle of ultrasonic atten

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  • Ultrasonic focused river sediment concentration online measuring instrument
  • Ultrasonic focused river sediment concentration online measuring instrument
  • Ultrasonic focused river sediment concentration online measuring instrument

Examples

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] The ultrasonic focusing type river sediment concentration online measuring instrument proposed by the present invention has an overall structure as figure 1 Shown, main engine 1 on water, lifting device 2 and detection water tank 3 three major parts, detection water tank is a liftable cube. The detection water tank 3 includes two focused ultrasonic transducers 31 , a protective casing 35 and two valves 33 that can be opened and closed. The focused ultrasonic transducer 31 is symmetrically installed on the front and rear sides of the detection water tank 3 in the horizontal direction. Small electric composite material array elements 311 are placed on the spherical surface 312 to form an array surface, and the time difference between each array element 311 is controlled by a circuit to generate a phase difference, and the focus position is accurately positioned t...

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Abstract

The invention discloses an ultrasonic focused river sediment concentration online measuring instrument. The measuring instrument comprises a rectangular detection water tank, a lifting device and a water host machine, wherein the detection water tank comprises two focused ultrasonic transducers, a protection casing and two openable and closable valves; the focused ultrasonic transducers are symmetrically mounted on a front side and a rear side of the detection water tank in a horizontal direction; the protection casing is fixed on two surfaces and an upper side, which are equipped with ultrasonic probes, by screws; both sides of the openable and closable valves are clamped in vertical grooves in side edges of a left side and a right side of the detection water tank; when the openable and closable valves are opened, a flow pipeline is formed to perform dynamic measurement; when the openable and closable valves are closed, static measurement can be performed. The ultrasonic focused river sediment concentration online measuring instrument provided by the invention has resolution and sensitivity higher than those of an ordinary planar ultrasonic measuring instrument, and is fixed under water during operation to reduce disturbance of flowing water body; the openable and closable valves are designed, so that the measuring instrument can perform the dynamic measurement and the static measurement on riverine suspended sediments simultaneously.

Description

technical field [0001] The invention relates to attenuation measurement of river suspension liquid by a focused ultrasonic transducer and a dynamic / static sediment concentration ultrasonic measuring device, in particular to an ultrasonic focused online river sediment concentration measuring instrument. Background technique [0002] Accurate measurement of river suspended matter concentration is of great significance to the online accurate detection and monitoring of river sediment parameters, construction of water conservancy and hydropower projects, hydrological observation and forecasting, hydrological measurement and other fields. , the change of the Haikou triangle belt and the healthy development of marine ecology also have an important impact. [0003] Traditional river sediment concentration measurement methods include manual sampling and indirect measurement. Manual sampling methods include drying method and weighing method. Although they have the advantages of high...

Claims

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Application Information

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IPC IPC(8): G01N15/06
CPCG01N15/06
Inventor 谢代梁夏一丹安雅丽曹永刚徐志鹏
Owner CHINA JILIANG UNIV
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