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Device for real-time automatic measurement of runoff mud and sand and measurement method

A measuring device and automatic measurement technology, which is applied in the direction of measuring device, measuring flow/mass flow, liquid/fluid solid measurement, etc., can solve the problem of real-time automatic and accurate measurement of runoff and sediment, so as to reduce labor cost and ensure accuracy performance, enhancing the accuracy

Active Publication Date: 2016-03-02
NORTHWEST A & F UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a real-time automatic measurement device and method for runoff sediment, which solves the problem that real-time automatic and accurate measurement has not been realized in the runoff sediment measurement process in the field environment

Method used

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  • Device for real-time automatic measurement of runoff mud and sand and measurement method
  • Device for real-time automatic measurement of runoff mud and sand and measurement method
  • Device for real-time automatic measurement of runoff mud and sand and measurement method

Examples

Experimental program
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Effect test

Embodiment 1

[0048] This embodiment provides a real-time automatic measurement device for runoff sediment, such as Figure 1 to Figure 5Shown, comprise bracket housing 1, the top surface of bracket housing 1 is fixedly installed with sample inlet 2, and weighing scale 3 is installed in bracket housing 1, and sampler 4 is installed on weighing scale 3, and sampler 4 The top is separated from the sample inlet 2, so that the weighing scale 3 does not measure the weight of the sample inlet 2, the bottom of the sampler 4 is provided with a sample discharge port 5, and the outer wall of the sampler 4 is also provided with an overflow for calibrating the volume of the sampler. Orifice 6;

[0049] A sampling valve 7 is installed on the sampling port 2, and the sampling valve 7 is driven by a sampling valve control motor 8, and a sampling valve 9 is installed on the sampling port 5, and the sampling valve 9 is driven by a sampling valve control motor 10;

[0050] A first fluid sensor 11 is install...

Embodiment 2

[0061] This embodiment provides a kind of measuring method that adopts the measuring device in embodiment 1, such as Figure 6 As shown, the method specifically includes the following steps:

[0062] Step 1, the measuring device is installed at the runoff outlet of the runoff sub-district or the bayonet station of the watershed, and after the measuring device is installed and positioned, the zero point of the measuring scale 3 is adjusted;

[0063] Step 2, the measuring device is initially in a standby state, the sampling valve 7 and the sampling valve 9 are both opened, and the first fluid sensor 11 detects in real time whether there is runoff;

[0064] Step 3, when the first fluid sensor 11 detects runoff, the measuring device is powered on;

[0065] Step 4, use the runoff to clean the sampler 4 for 10 s, close the sampling valve 7, empty the sampler 4 for 30 s, close the sample discharge valve 9, keep the measuring device stable for 60 s, weigh the sampler 4 with the weigh...

Embodiment 3

[0070] This embodiment uses the measuring device of embodiment 1 and the measuring method of embodiment 2 to measure the runoff sediment, and the measurement process is as follows:

[0071] 1. Preparation of standard sediment samples

[0072] Preset sediment concentration from 2-300kg / m 3 , of which 2-10kg / m 3 One increment per 2kg / m3, 10-100kg / m3 3 per 10kg / m 3 One increment, 100-300kg / m 3 Every 50kg / m 3 an increment. The soil to be tested is air-dried loess soil, and the moisture content of the air-dried soil is measured by the drying method, and the air-dried soil is converted into an oven-dried soil. Calculate and weigh the air-dried soil with a preset sediment concentration, add the air-dried soil to the sampler of the detector, and fill it with water. to be tested.

[0073] 2. Use the measuring device in Example 1 and the measuring method in Example 2 to measure the prepared standard sediment samples to obtain the runoff sediment content.

[0074] 3. Repeat thre...

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Abstract

The invention provides a device for real-time automatic measurement of runoff mud and sand and a measurement method, wherein a measurement scale is installed inside a support shell body; a sampler is installed on the measurement scale; the top end of the sampler is separated from a sample inlet hole; a sample discharge hole is disposed in the bottom end of the sampler; an overflow hole used to calibrate a volume of the sampler is also disposed in the outer side wall of the sampler; a sample inlet valve is installed on the sample inlet hole; the sample inlet valve controls electric motor driving by the sample inlet valve; a sample discharge valve is installed on the sample discharge hole; the sample discharge valve controls the electric motor driving by the sample discharge valve; a first fluid sensor is installed in the sample inlet hole; a second fluid sensor is installed in the overflow hole; and a PLC controller controls the whole measurement device to complete self-starting, self-dormancy and automatic repeated measurement. The measurement device provided by the invention has the advantages that a runoff volume and a content of the mud and the sand in an outdoor runoff small area or at a drainage basin runoff station can be measured automatically and continuously in real time; and labor force consumption of the manual measurement can be reduced. The measurement device and the measurement method provided by the invention can ensure accuracy of measurement results.

Description

technical field [0001] The invention belongs to the field of soil erosion observation and relates to the measurement of runoff and sediment content, in particular to a real-time automatic measurement device and method for runoff sediment. Background technique [0002] Soil erosion is an important part of the terrestrial water cycle. It not only affects the water environment of the ecosystem, but also relates to river safety, ecological security, conservation and sustainable use of water and soil resources. The Chinese Academy of Sciences Ecological Research Network (CERN), the National Ecological Observation Research Network, the National Hydrographic Survey Station Network, and the field stations of scientific and educational institutions all list runoff and sediment observation as important observation indicators. The National Water and Soil Conservation Informatization Plan (2013-2020) formulated by the Ministry of Water Resources listed "upgrading national water and soil...

Claims

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Application Information

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IPC IPC(8): G01F1/00G01N5/00
CPCG01F1/00G01N5/00
Inventor 郭明航赵向辉赵军展小云
Owner NORTHWEST A & F UNIV
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