NL2032570B1 - Automatic testing system for sediment concentration of suspended load and working method thereof - Google Patents

Abstract

Disclosed is an automatic testing system for a sediment concentration of a suspended load, including a test bench and a muddy water agitating tank, wherein an automatic water feeder, a pycnometer, a spraying device, an air—drying device, an electronic 5 balance, a manipulator, an electronic temperature measuring device, a power supply module and a controller are arranged on the test bench; the power supply module is configured to supply power to the automatic water feeder, the spraying device, the air—drying device, the electronic balance, the manipulator, the electronic lO temperature measuring device and the controller. According to the present invention, the test bench is arranged, and various components are arranged on the test bench, so that automation of the pycnometer in sediment concentration testing is realized; the workload is reduced by mechanical operation; the working time is 15 shortened; and the working efficiency and the testing accuracy are improved.

Description

P1485 /NLpd

AUTOMATIC TESTING SYSTEM FOR SEDIMENT CONCENTRATION OF SUSPENDED

LOAD AND WORKING METHOD THEREOF

TECHNICAL FIELD

The present invention belongs to the technical field of muddy water simulation tests, in particular to an automatic testing sys- tem for a sediment concentration of a suspended load.

BACKGROUND ART

A sediment concentration generally refers to a mass of dry sediment contained in muddy water per unit volume. Sediment con- centration testing in a water body is an essential testing element in river hydrological observation, river model test, water quality evaluation and industrial and agricultural water intaking.

A sediment concentration testing method is divided into a di- rect testing method and an indirect testing method depending on testing principles.

The direct testing method mainly includes an air-drying weighing method and a pycnometer method.

The indirect testing method mainly includes a photoelectric sediment concentration meter method, an isotope sediment concen- tration meter method, a laser sediment concentration meter method, an ultrasonic sediment concentration meter method and the like.

Compared with the direct testing method, the indirect testing method is still in a research and development stage, and the test- ing accuracy is low. Consequently, the direct testing method is widely adopted for testing the sediment concentration of a water body in the current stage.

In experiments on related technologies, the problems of high physical labor intensity, low working efficiency, low degree of standardization, low accuracy and the like exist in the sediment concentration testing as the sediment concentration index is sub- ject to objective factors such as equipment and operators when the traditional pycnometer method is adopted.

SUMMARY

In view of this, the present invention provides a automatic testing system for a sediment concentration of a suspended load to solve the problems of low working efficiency and low accuracy in a testing process of a sediment concentration in the prior art.

In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a automatic testing system for a sediment concentration of a suspended load includes a test bench and a muddy water agitating tank, wherein an automatic water feeder, a pycnometer, a spraying device, an air- drying device, an electronic balance, a manipulator, an electronic temperature measuring device, a power supply module and a control- ler are arranged on the test bench; the power supply module is configured to supply power to the automatic water feeder, the spraying device, the air-drying de- vice, the electronic balance, the manipulator, the electronic tem- perature measuring device and the controller; the muddy water agitating tank is configured to hold muddy water; the controller is configured to send a water feeding instruc- tion to the automatic water feeder, send a spraying instruction to the spraying device, send an air-drying instruction to the air- drying device, send a moving instruction and a water drainage in- struction to the manipulator, send a weighing instruction to the electronic balance, and send a temperature measuring instruction to the electronic temperature measuring device; the automatic water feeder is configured to add muddy water in the muddy water agitating tank to the pycnometer according to the water feed instruction, wherein a water outlet plugged with a plug is arranged at the bottom of the pycnometer; the spraying device is configured to spray clean water ac- cording to the spraying instruction to clean an external surface of the pycnometer; the air-drying device is configured to air-dry the pycnometer according to the air-drying instruction; the manipulator is configured to place the air-dried pycnome- ter on the electronic balance according to the moving instruction,

and is further configured to take out and put back the plug at the bottom of the pycnometer according to the water drainage instruc- tion; the electronic balance is configured to weigh the air-dried pycnometer according to the weighing instruction; and the electronic temperature measuring device is configured to measure a temperature of muddy water in the pycnometer according to the temperature measuring instruction.

Further, the system includes: a display screen, configured to display readings of the elec- tronic balance, readings of the electronic temperature measuring device, and readings of sediment concentration testing results; wherein the display screen is connected with the controller.

The present invention, using the above-mentioned technical solution, can achieve the following beneficial effects:

The test bench is arranged, and the automatic water feeder, the pycnometer, the spraying device, the air-drying device, the electronic balance, the manipulator, the electronic temperature measuring device, the power supply module and the controller are arranged on the test bench, so that automation of the pycnometer in sediment concentration testing is realized; the workload is re- duced by mechanical operation; the degree of standardization in operation is improved; the working time is shortened; and the working efficiency and the testing accuracy are improved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of an automatic testing system for a sediment concentration of a suspended load of the present invention.

FIG. 2 is a flow chart of an automatic testing system for a sediment concentration of a suspended load of the present inven- tion.

DETAILED DESCRIPTION OF THE EMBODIMENTS

A specific automatic testing system for a sediment concentra- tion of a suspended load and a working method thereof that are provided in the embodiments of the present application will be de-

scribed below in conjunction with the accompanying drawings.

As shown in FIG. 1, the present application provides an auto- matic testing system for a sediment concentration of a suspended load, including a test bench (not shown) and a muddy water agitat- ing tank (not shown), wherein an automatic water feeder 12, a pyc- nometer {not shown), a spraying device 13, an air-drying device 14, an electronic balance 16, a manipulator 15, an electronic tem- perature measuring device 17, a power supply module (not shown) and a controller 11 are arranged on the test bench; the power supply module is configured to supply power to the automatic water feeder 12, the spraying device 13, the air-drying device 14, the electronic balance 16, the manipulator 15, the electronic temperature measuring device 17, and the controller 11; the muddy water agitating tank is configured to hold muddy water; the controller 11 is configured to send a water feeding in- struction to the automatic water feeder 12, send a spraying in- struction to the spraying device 13, send an air-drying instruc- tion to the air-drying device 14, send a moving instruction and a water drainage instruction to the manipulator 15, send a weighing instruction to the electronic balance 16, and send a temperature measuring instruction to the electronic temperature measuring de- vice 17; the automatic water feeder 12 is configured to add muddy wa- ter in the muddy water agitating tank to the pycnometer according to the water feed instruction, wherein a water outlet plugged with a plug is arranged at the bottom of the pycnometer; the spraying device 13 is configured to spray clean water ac- cording to the spraying instruction to clean an external surface of the pycnometer; the air-drying device 14 is configured to air-dry the pycnom- eter according to the air-drying instruction; the manipulator 15 is configured to place the air-dried pyc- nometer on the electronic balance 16 according to the moving in- struction, and is further configured to take out and put back the plug at the bottom of the pycnometer according to the water drain- age instruction;

the electronic balance 16 is configured to weigh the air- dried pycnometer according to the weighing instruction; and the electronic temperature measuring device 17 is configured to measure a temperature of muddy water in the pycnometer accord- 5 ing to the temperature measuring instruction.

According to the automatic testing system for a sediment con- centration of a suspended load provided by the present applica- tion, the test bench is arranged, and the automatic water feeder 12, the pycnometer, the spraying device 13, the air-drying device 14, the electronic balance 16, the manipulator 15, the electronic temperature measuring device 17, the power supply module and the controller 11 are arranged on the test bench, so that automation of the pycnometer in low sediment concentration testing is real- ized; the workload is reduced by mechanical operation; the working time is shortened; and the working efficiency and the testing ac- curacy are improved.

In some embodiments, the automatic testing system for a sedi- ment concentration of a suspended load provided by the present ap- plication further includes: a display screen 18, configured to display readings of the electronic balance 16, readings of the electronic temperature measuring device 17, and readings of sediment concentration test- ing results; wherein the display screen 18 is connected with the control- ler 11.

According to the present application, readings of the elec- tronic balance 16 and readings of the electronic temperature meas- uring device 17 are displayed in the display screen to facilitate observation and recording.

A conveyor belt 19 and an operation button are arranged on the test bench, and connected with the controller 11 respectively.

The automatic water feeder 12, the spraying device 13, the air-drying device 14, the electronic balance 16, the manipulator 15 and the electronic temperature measuring device 17 are at one side or both sides of the conveyor belt.

When an experiment is being performed, the system is powered on, the operation button is pressed down, and the pycnometer can be moved by the conveyor belt, wherein a position sensor may be arranged on the conveyor belt, and the position sensor is connect- ed with the controller 11. When the pycnometer reaches a set posi- tion, the position sensor sends a signal to the controller 11, and the conveyor belt is controlled to stop by the controller 11. Al- ternatively, the button may be controlled manually to control the conveyor belt to be started and stopped. Wherein the automatic wa- ter feeder 12, the spraying device 13, the air-drying device 14, the electronic balance 16, manipulator 15 and the electronic tem- perature measuring device 17 in the present application may be ar- ranged either at one side of the conveyor belt, or at both sides of the conveyor belt, and this is not restricted here by the pre- sent application.

In some embodiments, the automatic testing system for a sedi- ment concentration of a suspended load provided by the present ap- plication further includes: an agitating pump arranged at the bot- tom of the muddy water agitating tank, wherein agitating blades are arranged at an end part of the agitating pump; and the agitating pump is configured to control the agitating blades to agitate muddy water in the muddy water agitating tank.

A sediment concentration cannot be calculated accurately be- cause sediment will drop due to gravity. The agitating pump is used to keep the sediment concentration of muddy water relatively uniform, so that the sediment concentration can be calculated more accurately.

In some embodiments, the present application further in- cludes: a clean water reservoir, connected with the spraying device 13 and configured to supply clean water to the spraying device 13; wherein a clean water pump is arranged in the clean water reservoir, and connected with the controller 11.

In some embodiments, a first timer is arranged in the auto- matic water feeder 12; a second timer is arranged in the spraying device 13; a third timer is arranged in the air-drying device 14; and the first timer, the second timer and the third timer are connected with the controller 11 respectively.

Specifically, the first timer controls the time to be 3 sec- onds; in other words, the first timer controls the time to be just enough for filling up the pycnometer. The control time of the first timer in the present application may be set according to the size of the pycnometer. The total control time of the second timer and the third timer is 1 minute, or the control time of the second timer and that of the third timer may be set separately, and the control time will not be set here in the present application. The control time may be set by the staff according to actual needs.

In some embodiments, the spraying device 13 includes: a spraying head, a pipeline and spraying orifices, wherein the spraying head is connected with the pipeline, and several spraying orifices are arranged in the spraying head.

Specifically, the spraying head is configured to spray clean water, the pipeline is configured to convey water in the clean wa- ter reservoir into the spraying device 13, the spraying orifices are configured to spray water, and a brush sleeve is configured to clean dirt on a surface of the pycnometer.

In some embodiments, the air-drying device 14 includes: an air-drying chamber, wherein an air-drying blower and a temperature probe are arranged in the air-drying chamber.

Wherein the air-drying blower is configured to provide tem- perature, and the temperature probe is configured to measure a temperature in the air-drying chamber, so that the staff can ob- serve the temperature in the air-drying chamber conveniently in order to avoid great changes in the temperature of the pycnometer due to an air-drying temperature.

It should be noted that the manipulator 15 provided in the present application adopts the prior art, which will not be de- scribed in detail in the present application.

Preferably, the electronic temperature measuring device 17 in the present application is an electronic thermometer.

It should be noted that the temperature has a greater impact on the sediment concentration. The smaller the sediment concentra- tion, the greater the impact of temperature errors on the sediment concentration. Therefore, according to the present application,

the temperature is tested with a thermometer with an indicated value of 0.1°C in sediment concentration testing, and the thermome- ter is calibrated periodically.

As shown in FIG. 2, the present application adopts a working method of the automatic testing system for a sediment concentra- tion of a suspended load realized in the above-mentioned embodi- ment, including the following steps: 3101, the automatic water feeder 12 adds muddy water in the muddy water agitating tank to the pycnometer, wherein a water out- let plugged with a plug is arranged at the bottom of the pycnome- ter; 3102, the spraying device 13 sprays clean water to clean an external surface of the pycnometer;

S103, the air-drying device 14 air-dries the pycnometer; 5104, the manipulator 15 places the air-dried pycnometer on the electronic balance 16; 3105, the electronic balance 16 weighs the air-dried pycnome- ter; 3106, the manipulator 15 takes out and puts back the plug at the bottom of the pycnometer; and 8107, the electronic temperature measuring device 17 measures a temperature of muddy water in the pycnometer.

Specifically, in the present application, after the system is powered on, the controller 11 sends a water feeding instruction to the automatic water feeder 12, sends a spraying instruction to the spraying device 13, sends an air-drying instruction to the air- drying device 14, sends a moving instruction and a water drainage instruction to the manipulator 15, sends a weighing instruction to the electronic balance 16, and sends a temperature measuring in- struction to the electronic temperature measuring device 17, so that the automatic water feeder 12 fills the pycnometer with muddy water, wherein the pycnometer has an upper opening and a lower opening, both of which are plugged with wooden plugs. After the automatic water feeder 12 fills up the pycnometer with muddy wa- ter, the manipulator 15 plugs up the upper opening of the pycnome- ter and moves until water comes out from the spraying device 13, and the spraying device 13 sprays water to the surface of the pyc-

nometer to wash away the dirt on the surface of the pycnometer; after that, the air-drying device 14 air-dries moisture on the surface of the pycnometer, then the manipulator 15 moves the pyc- nometer onto the electronic balance 16 to weigh the pycnometer and record the reading, the manipulator 15 removes the wooden plug from the lower opening of the pycnometer to release the muddy wa- ter in the pycnometer, the temperature of the muddy water is test- ed by using the electronic temperature measuring device 17, a reading is recorded, and a sediment concentration is calculated by a mass method. The above-mentioned operating process is repeated, and values obtained through multiple calculations are averaged to improve the test accuracy.

To sum up, the present invention provides an automatic test- ing system for a sediment concentration of a suspended load, wherein the test bench is arranged, and the automatic water feed- er, the pycnometer, the spraying device, the air-drying device, the electronic balance, the manipulator, the electronic tempera- ture measuring device, the power supply module and the controller are arranged on the test bench, so that automation of the pycnome- ter in low sediment concentration testing is realized; the work- load is reduced; and the working efficiency and the testing accu- racy are improved.

Claims (2)

CONCLUSIONS 1. Automatic test system for a sediment concentration of a suspended load, comprising a test bench and a stir tank for muddy water, including an automatic water supply, a pycnometer, a spraying device, an air drying device, an electronic balance, a manipulator, an electronic temperature measuring device , a power supply module and a controller are installed on the test bench; wherein the power module is configured to supply power to the automatic water supply, the spraying device, the air drying device, the electronic balance, the manipulator, the electronic temperature measuring device and the controller; wherein the muddy water rudder box is configured to hold muddy water; wherein the controller is configured to send a water supply instruction to the automatic water supply, a spray instruction to the spray device, an air dry instruction to the air dry device, a move instruction and a water discharge instruction to the manipulator, a weigh instruction to the electronic balance and to send a temperature measurement instruction to the electronic temperature meter; wherein the automatic water supply device is configured to add muddy water in the muddy water stirring tank to the pycnometer according to the water supply instruction, wherein a water outlet closed with a plug is provided at the bottom of the pycnometer; wherein the spray device is configured to spray clean water according to the spray instruction to clean an external surface of the pycnometer; wherein the air drying device is configured to air dry the pycnometer according to the air drying instruction; wherein the manipulator is configured to place the air-dried pycnometer on the electronic balance according to the relocation instruction, and further configured to remove and replace the plug on the bottom of the pycnometer according to the water drain instruction; wherein the electronic scale is configured to weigh the air-dried pycnometer according to the weighing instruction; and wherein the electronic temperature measuring device is configured to measure the temperature of muddy water in the pycnometer according to the instruction for measuring the temperature. The automatic suspended load sediment concentration testing system of claim 1, further comprising a display screen configured to display electronic balance readings, electronic temperature measuring device readings, and sediment concentration test result readings; where the display is connected to the controller.