CN104165817A - Real-time runoff sediment content measuring device and measuring method - Google Patents
Real-time runoff sediment content measuring device and measuring method Download PDFInfo
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- CN104165817A CN104165817A CN201410426952.XA CN201410426952A CN104165817A CN 104165817 A CN104165817 A CN 104165817A CN 201410426952 A CN201410426952 A CN 201410426952A CN 104165817 A CN104165817 A CN 104165817A
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Abstract
The invention discloses a real-time runoff sediment content measuring device and a measuring method, belonging to the technical field of measurement. The real-time runoff sediment content measuring device comprises a measuring barrel, a weighing sensor, a water discharging pipe, an electric valve, a liquid-level sensor, a controller and a processor, wherein the measuring barrel is placed on the weighing sensor; the electric valve is arranged on the water discharging pipe at the bottom of the barrel; the liquid-level sensor is arranged above the measuring barrel; the processor is connected with the weighing sensor, the electric valve and the liquid-level sensor by the controller respectively. The measuring method comprises the steps of setting the highest and lowest water levels in the measuring barrel and the switching-on time and the switching-off time of the electric valve; continuously guiding muddy water into the measuring barrel, measuring the height of the water level in the measuring barrel and the weight of water in the measuring barrel, and transmitting obtained values to the processor by the controller; when the water level rises to the highest water level, switching on the electric valve and discharging the water in the measuring barrel; when the water level falls to the lowest water level, switching off the electric valve; and processing obtained and set parameters by adopting the processor so as to obtain the weight of the runoff sediment of the barrel. The real-time runoff sediment content measuring device and the measuring method disclosed by the invention have the advantages that the content of the runoff sediment with different soils can be accurately measured and online measurement can be realized.
Description
Technical field
The invention belongs to field of measuring technique, be specifically related to a kind of device of measuring sediment charge, and utilize the method for such measurement device runoff volume.
Background technology
Measure at present radial flow sediment content institute employing method and have two kinds, one is to adopt the direct method of measurement, as oven drying method claims again weight method, get a certain amount of sample, measure the weight after its original weight and oven dry, thereby determine the silt content in muddy water, but because oven drying method need be dried testing sample, and bake out temperature is generally 105 °, heating needs about 11 hours, high temperature can cause soil with organic matter to be carbonized with long-term heating, and makes the silt content of measurement less than normal, also makes whole measuring process waste time and energy to the requirement of bake out temperature and heat time.The alcohol combustion dry method adopting when people use oven drying method in-site measurement silt content in the wild can make surveyed silt content produce larger error, and can not realize real-time online and detect.Another kind method is the indirect method of measurement, as capacitance method, laser method, gamma-rays method etc., but affected by temperature, sand grain etc., and its measuring error is larger, especially very large or when very little in sediment concentration, is difficult to realize Measurement accuracy.This seminar once applied for utility model patent " measuring device for slit content in muddy water " (patent No. is ZL201120215645.9) in 2011, but find in actual use, in the time that the sediment charge in muddy water is greater than 3%, its measuring accuracy significantly declines, reason is: originally adopt a pressure transducer to measure liquid level, measure liquid level with a ultrasonic sensor, utilize two liquid level differences to calculate the sediment charge in muddy water, but, in the time that the silt in muddy water is too many, silt has covered the measurement face of pressure transducer, that measuring accuracy significantly declines.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of radial flow sediment content real-time measurement apparatus.
Invention provides the measuring method of utilizing this device simultaneously.
The scheme of the technical matters that the present invention solves is to adopt to measure bucket, LOAD CELLS, ajutage, motorized valve, liquid level sensor, controller and processor form radial flow sediment content real-time measurement apparatus, measuring bucket is placed in LOAD CELLS by lower carriage, ajutage connects measures bottom of the barrel, motorized valve is arranged on ajutage, measure bucket upper along being fixed with upper bracket, liquid level sensor is arranged on and is measured bucket top by upper bracket, the filtering tube of liquid level sensor is in measurement bucket, controller connects respectively LOAD CELLS, motorized valve and liquid level sensor, processor connects controller.Measuring bucket top has and muddy water is collected and injects the tank in measuring barrel.
On measurement bucket, along there being a circle flanging, after ground maintenance measurement barrel can being filled with water like this, do not produce deformation.
The present invention completes the measurement of radial flow sediment content by following steps:
1, by the peak level in controller setting measurement bucket
, lowest water level
, set motorized valve duration of valve opening
, closing valve time
; The bucket floorage of measuring measurement bucket is
, tank is to the height at the bucket end of measurement bucket
;
2, by tank, the muddy water collecting is imported continuously and measured in bucket, measure in real time inner bucket water position height by liquid level sensor, measure in real time the weight of inner bucket water by LOAD CELLS, and the numerical value obtaining is sent to processor by controller;
3, when water level rises to peak level
time, controller instruction motorized valve is opened, and the water of measuring in bucket is discharged by ajutage, when water level is reduced to lowest water level
time, controller instruction motorized valve cuts out;
4, processor is processed the parameter obtaining and set, and the weight that obtains runoff and sediment in bucket is:
: the weight (Kg) of measuring runoff and sediment in bucket
: the effective muddy water in current bucket is measured weight (Kg)
The floorage of bucket is
, the muddy water water level in the bucket of being measured in real time by liquid level sensor
, measured the weight of muddy water by LOAD CELLS
, in muddy water, the proportion of silt is
, the proportion of clear water is
, C is air content in water, wherein
,
, C all can measure by prior art;
And total run-off in actual measurement process
for:
: peak level height in the bucket of setting;
: lowest water level height in the bucket of setting;
In actual measurement process
,
, when reaching
upper lower limit value time, device bottom motorized valve automatic switch;
: flow into the water yield time used in actual measurement bucket, the automatic record of computer processor;
: the number of times that discharges water, the automatic record of computer processor;
: duration of valve opening, refers to start to start to opening required time, the automatic record of computing machine completely from motorized valve;
: closing valve time, refers to start to close to from motorized valve close required time completely, the automatic record of computing machine;
: discharge time, refers to open to discharge water to start to close to motorized valve completely from motorized valve finish to discharge water required time, the automatic record of computer processor.
In the time of actual measurement, when 0 critical point at the bottom of the water level in bucket reaches barrel (drum bottom as shown), in bucket, there is residual muddy water weight
(
for fixed value, artificial calibration, set-point), on the basis of Preliminary Determination silt weight, consider that in removal bucket, having the effective silt weight of reality in bucket in residual muddy water weight situation is:
: the weight (Kg) of considering to remove runoff and sediment in the bucket that has residual muddy water gravimetry in bucket;
In addition, in the time of actual measurement, owing to there being the impulse force of water, in the time calculating effective silt weight, also should cut, impulse force is
,
for present flow rate,
,
for flowing into the water yield time used in current actual measurement bucket;
for the flow velocity when the current actual measurement bucket middle water level drop,
,
for the density of muddy water,
,
for acceleration of gravity.
Now the effective silt weight of reality in bucket is:
?
;
Therefore consider to remove
with
the actual silt weight that finally records of impact be:
；
W is actual silt weight more accurately.
This programme has adopted LOAD CELLS, makes sediment charge unrestricted.The LOAD CELLS adopting and high-accuracy liquid level sensor are measured the weight and volume of runoff muddy water liquid, by interpolation calculation, can measure exactly the radial flow sediment content of different soil properties, and can realize on-line measurement.
The present invention, in soil Erosion Research field, measures the sediment charge in runoff muddy water rapidly and accurately, land comprehensive administer with exploitation aspect and sewage treatment area effective monitoring, predict Data support be provided for geologic hazard (as rubble flow).Can measure rapidly and accurately the radial flow sediment content of different soil properties, realize on-line continuous and measure, not be subject to the impact of the condition such as temperature of muddy water.
Brief description of the drawings
Fig. 1 is the principle schematic of measuring;
Fig. 2 is the cut-open view that apparatus of the present invention are measured barrel section.
Embodiment
Example one, apparatus of the present invention are by measuring bucket 1, LOAD CELLS 3, ajutage 4, motorized valve 5, liquid level sensor 7, controller 9 and processor 10 form, measuring bucket 1 is placed in LOAD CELLS 3 by lower carriage 2, ajutage 4 connects to be measured at 1, the bucket end, motorized valve 5 is arranged on ajutage 4, measure on bucket 1 along being fixed with upper bracket 6, liquid level sensor 7 is arranged on and is measured bucket 1 top by upper bracket 6, the filtering tube 8 of liquid level sensor 7 is in measurement bucket 1, controller 9 connects respectively LOAD CELLS 3, motorized valve 5 and liquid level sensor 7, processor 10 connects controller 9.Measure bucket 1 top have muddy water is collected and injects measure barrel in tank.Measuring on bucket 1 along there being a circle flanging 11.Measuring in the ajutage 4 between bucket 1 bottom and motorized valve 5 is residual muddy water 12.
The present invention completes the measurement of radial flow sediment content by following steps:
1, by the peak level in controller setting measurement bucket
, lowest water level
, set motorized valve duration of valve opening
, closing valve time
; The bucket floorage of measuring measurement bucket is
, tank is to the height at the bucket end of measurement bucket
;
2, by tank, the muddy water collecting is imported continuously and measured in bucket, measure in real time inner bucket water position height by liquid level sensor, measure in real time the weight of inner bucket water by LOAD CELLS, and the numerical value obtaining is sent to processor by controller;
3, when water level rises to peak level
time, controller instruction motorized valve is opened, and the water of measuring in bucket is discharged by ajutage, when water level is reduced to lowest water level
time, controller instruction motorized valve cuts out;
4, processor is processed the parameter obtaining and set, and the weight that obtains runoff and sediment in bucket is:
: the weight (Kg) of measuring runoff and sediment in bucket
: the effective muddy water in current bucket is measured weight (Kg)
The floorage of bucket is
, the muddy water water level in the bucket of being measured in real time by liquid level sensor
, measured the weight of muddy water by LOAD CELLS
, in muddy water, the proportion of silt is
, the proportion of clear water is
, C is air content in water, wherein
,
, C all can measure by prior art;
And total run-off in actual measurement process
for:
: peak level height in the bucket of setting;
: lowest water level height in the bucket of setting;
In actual measurement process
,
, when reaching
upper lower limit value time, device bottom motorized valve automatic switch;
: flow into the water yield time used in actual measurement bucket, the automatic record of computer processor;
: the number of times that discharges water, the automatic record of computer processor;
: duration of valve opening, refers to start to start to opening required time, the automatic record of computing machine completely from motorized valve;
: closing valve time, refers to start to close to from motorized valve close required time completely, the automatic record of computing machine;
: discharge time, refers to open to discharge water to start to close to motorized valve completely from motorized valve finish to discharge water required time, the automatic record of computer processor.
Total run-off in example two, apparatus of the present invention and actual measurement process
with example one, actual effectively silt weight is:
: the weight (Kg) of considering to remove runoff and sediment in the bucket that has residual muddy water gravimetry in bucket.
Total run-off in example three, apparatus of the present invention and actual measurement process
with example one, actual effectively silt weight is:
。
Below by the order of accuarcy that can reflect prior art and the technology of the present invention measurement of table 1 and table 2, the measurement result that table 1 is prior art, the measurement result that table 2 is the technology of the present invention.
Table 1
Table 2
Result shows: the numerical value of measuring with original differential pressure method, and the error of many points has exceeded 10%; Be less than 5% by data (2014) maximum error of existing method actual measurement.
Claims (5)
1. a radial flow sediment content real-time measurement apparatus, it is characterized in that: it is by measuring bucket, LOAD CELLS, ajutage, motorized valve, liquid level sensor, controller and processor form, measuring bucket is placed in LOAD CELLS by lower carriage, ajutage connects measures bottom of the barrel, motorized valve is arranged on ajutage, measure bucket upper along being fixed with upper bracket, liquid level sensor is arranged on and is measured bucket top by upper bracket, the filtering tube of liquid level sensor is in measurement bucket, controller connects respectively LOAD CELLS, motorized valve and liquid level sensor, processor connects controller.
2. measurement mechanism according to claim 1, is characterized in that: measuring on bucket 1 along there being a circle flanging 11.
3. the method that measurement mechanism according to claim 1 is measured, is characterized in that completing by following steps:
(1) by the peak level in controller setting measurement bucket
, lowest water level
, set motorized valve duration of valve opening
, closing valve time
; The bucket floorage of measuring measurement bucket is
, tank is to the height at the bucket end of measurement bucket
;
(2) by tank, the muddy water collecting is imported continuously and measured in bucket, measure in real time inner bucket water position height by liquid level sensor, measure in real time the weight of inner bucket water by LOAD CELLS, and the numerical value obtaining is sent to processor by controller;
(3) when water level rises to peak level
time, controller instruction motorized valve is opened, and the water of measuring in bucket is discharged by ajutage, when water level is reduced to lowest water level
time, controller instruction motorized valve cuts out;
(4) processor is processed the parameter obtaining and set, and the weight that obtains runoff and sediment in bucket is:
: the weight of measuring runoff and sediment in bucket
: the effective muddy water in current bucket is measured weight
The floorage of bucket is
, the muddy water water level in the bucket of being measured in real time by liquid level sensor
, measured the weight of muddy water by LOAD CELLS
, in muddy water, the proportion of silt is
, the proportion of clear water is
, C is air content in water, wherein
,
, C all can measure by prior art;
And total run-off in actual measurement process
for:
: peak level height in the bucket of setting;
: lowest water level height in the bucket of setting;
In actual measurement process
,
, when reaching
upper lower limit value time, device bottom motorized valve automatic switch;
: flow into the water yield time used in actual measurement bucket, the automatic record of computer processor;
: the number of times that discharges water, the automatic record of computer processor;
: duration of valve opening, refers to start to start to opening required time, the automatic record of computing machine completely from motorized valve;
: closing valve time, refers to start to close to from motorized valve close required time completely, the automatic record of computing machine;
: discharge time, refers to open to discharge water to start to close to motorized valve completely from motorized valve finish to discharge water required time, the automatic record of computer processor.
4. the method that measurement mechanism according to claim 3 is measured, is characterized in that:
for there being residual muddy water weight in bucket,
for considering to remove the weight of runoff and sediment in the bucket that has residual muddy water gravimetry in bucket.
5. the method that measurement mechanism according to claim 4 is measured, is characterized in that:
；
In the time of actual measurement, owing to there being the impulse force of water, in the time calculating effective silt weight, also should cut, impulse force is
,
for present flow rate,
,
for flowing into the water yield time used in current actual measurement bucket;
for the flow velocity when the current actual measurement bucket middle water level drop,
,
for the density of muddy water,
,
for acceleration of gravity;
The effective silt weight of reality in bucket is like this:
?
;
Therefore consider to remove
with
the actual silt weight that finally records of impact be W.
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|---|---|---|---|
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|---|---|---|---|
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| CN104165817B CN104165817B (en) | 2016-04-13 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371904A (en) * | 2015-10-16 | 2016-03-02 | 西北农林科技大学 | Device for real-time automatic measurement of runoff mud and sand and measurement method |
| CN106404135A (en) * | 2016-11-17 | 2017-02-15 | 西安理工大学 | Automatic water and sediment measuring and weighing device |
| CN106932297A (en) * | 2017-03-13 | 2017-07-07 | 北京林业大学 | Sediment charge automatic measurement system in a kind of runoff |
| CN109443436A (en) * | 2018-11-26 | 2019-03-08 | 黑龙江省水利科学研究院 | Slope runoff overall process automated watch-keeping facility |
| CN110031356A (en) * | 2019-05-10 | 2019-07-19 | 长春合利水土保持科技有限公司 | Sediment content measuring device in a kind of portable runoff |
| CN112945366A (en) * | 2021-02-06 | 2021-06-11 | 江西师范大学 | Be applied to automatic observation equipment of runoff district water sand |
| CN114062185A (en) * | 2021-11-16 | 2022-02-18 | 黑龙江省水利科学研究院 | But automatic measuring device of single-bucket turnover type runoff silt of automatically cleaning |
| CN114486627A (en) * | 2021-12-29 | 2022-05-13 | 西安理工大学 | Silt content measuring device and method based on density |
| CN114720317A (en) * | 2022-04-15 | 2022-07-08 | 中国农业大学 | Method and device for improving measurement accuracy of runoff sand content by volume displacement method |
| CN115032108A (en) * | 2022-08-04 | 2022-09-09 | 徐州徐工基础工程机械有限公司 | Mud sand content detection device and method and engineering machinery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371904B (en) * | 2015-10-16 | 2018-05-29 | 西北农林科技大学 | A kind of runoff and sediment real time automatic measuring device and measuring method |
| CN105371904A (en) * | 2015-10-16 | 2016-03-02 | 西北农林科技大学 | Device for real-time automatic measurement of runoff mud and sand and measurement method |
| CN106404135A (en) * | 2016-11-17 | 2017-02-15 | 西安理工大学 | Automatic water and sediment measuring and weighing device |
| CN106932297A (en) * | 2017-03-13 | 2017-07-07 | 北京林业大学 | Sediment charge automatic measurement system in a kind of runoff |
| CN109443436A (en) * | 2018-11-26 | 2019-03-08 | 黑龙江省水利科学研究院 | Slope runoff overall process automated watch-keeping facility |
| CN110031356B (en) * | 2019-05-10 | 2023-12-26 | 长春合利水土保持科技有限公司 | Portable device for measuring sediment content in runoff |
| CN110031356A (en) * | 2019-05-10 | 2019-07-19 | 长春合利水土保持科技有限公司 | Sediment content measuring device in a kind of portable runoff |
| CN112945366A (en) * | 2021-02-06 | 2021-06-11 | 江西师范大学 | Be applied to automatic observation equipment of runoff district water sand |
| CN114062185B (en) * | 2021-11-16 | 2022-06-03 | 黑龙江省水利科学研究院 | But single-bucket of automatically cleaning tip formula runoff silt automatic measuring device |
| CN114062185A (en) * | 2021-11-16 | 2022-02-18 | 黑龙江省水利科学研究院 | But automatic measuring device of single-bucket turnover type runoff silt of automatically cleaning |
| CN114486627A (en) * | 2021-12-29 | 2022-05-13 | 西安理工大学 | Silt content measuring device and method based on density |
| CN114720317A (en) * | 2022-04-15 | 2022-07-08 | 中国农业大学 | Method and device for improving measurement accuracy of runoff sand content by volume displacement method |
| CN114720317B (en) * | 2022-04-15 | 2024-05-14 | 中国农业大学 | Method and device for improving measurement accuracy of runoff sand content by volume displacement method |
| CN115032108A (en) * | 2022-08-04 | 2022-09-09 | 徐州徐工基础工程机械有限公司 | Mud sand content detection device and method and engineering machinery |
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