CN109060448B - Suspended load sampling device capable of acquiring real-time relative position and application method thereof - Google Patents
Suspended load sampling device capable of acquiring real-time relative position and application method thereof Download PDFInfo
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- CN109060448B CN109060448B CN201811079210.9A CN201811079210A CN109060448B CN 109060448 B CN109060448 B CN 109060448B CN 201811079210 A CN201811079210 A CN 201811079210A CN 109060448 B CN109060448 B CN 109060448B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/16—Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
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Abstract
The invention relates to a suspended load sampling device capable of acquiring a real-time relative position and a use method thereof. According to the invention, the water level sensor and the terrain sensor are adopted, so that the bed surface flushing and silting height change information caused by sediment movement can be obtained simultaneously, and the absolute position and the relative water depth position of the suspended load sampler from the bed surface are controlled in real time by utilizing the information, so that the sampling accuracy is improved; the invention fully utilizes the rule that the suspended load concentration is distributed along the vertical line, the distances of a plurality of sampling tubes are distributed in an exponential manner, and the minimum number of sampling tubes which can fully reflect the distribution characteristics of the suspended load concentration are arranged in the limited available distance, so that the interference of the sampling tubes on water flow is reduced, and the sampling work efficiency is improved.
Description
Technical Field
The invention relates to the technical field of hydraulic measurement, in particular to a suspended load sampling device capable of acquiring a real-time relative position and a use method thereof.
Background
At present, various automatic measurement methods for measuring the sand content of suspended substances have been developed, including a photoelectric method, an ultrasonic method, a laser method and the like, but the most direct, accurate and reliable method still comprises the steps of sampling the sand-containing water flow, then filtering and weighing the sampled water sample, and obtaining the sand content of the sampled water sample by using a pycnometer method or a filtering, drying and weighing method.
The existing sampling method is to extend a sampling tube into water flow, connect a rubber or plastic hose to the sampling tube, take out the sand-containing water flow by a siphon or pumping method, and analyze the taken sand-containing water sample to obtain the sand content. An L-shaped sampling tube is usually adopted, the bottom of the L-shaped sampling tube is opposite to the water flow direction, the top of the L-shaped sampling tube is connected with a hose, and then water flow is sucked out; the sampling tube is usually fixed on the probe, and the sand content of different heights is obtained by manually moving the probe. The method has two defects, namely, the vertical distance is generally manually moved and read, and generally only one position can be sampled at a time, so that the efficiency is low; secondly, when the sediment flushing change occurs in the test water tank, sediment accumulation exists at the bottom or the sediment at the bottom is flushed by water flow, the distance from the sampler to the bottom changes, and the distance from the sampler to the height of the designated sampling pipe to the bed surface is different, so that the sampling accuracy is affected. Because the suspended solids sand concentration is generally exponentially distributed along the vertical line, the closer the suspended solids sand concentration is to the bed surface, the larger the sand concentration is, and the larger the sand concentration is changed due to the change of the distance, thereby affecting the accuracy and the reliability of suspended solids sampling.
Disclosure of Invention
The invention aims to provide a suspended load sampling device capable of acquiring a real-time relative position and a use method thereof, and solves the problems of insufficient accuracy and reliability of suspended load sampling.
The technical scheme for solving the technical problems is as follows: the utility model provides a can acquire real-time relative position's suspended solid sampling device, includes sampling plate, lift, level sensor and topography sensor, follow supreme first sampling tube, second sampling tube, third sampling tube and the fourth sampling tube of being equipped with in proper order down on the sampling plate, the top of sampling plate passes through the lift lead screw and links to each other with the lift, the rotating bearing of lift links to each other with the motor, level sensor is passed through to lift one side and is connected level sensor through the level sensor hack lever, topography sensor is still connected through topography sensor hack lever to the sampling plate, motor, level sensor and topography sensor all are connected with the control end.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the distance between the fourth sampling tube and the third sampling tube is 2 times of the distance between the third sampling tube and the second sampling tube, and the distance between the third sampling tube and the second sampling tube is 2 times of the distance between the second sampling tube and the first sampling tube.
Further, the terrain sensor rack bar is positioned at the lower part of the sampling plate, and the working surface of the terrain sensor and the first sampling plate are positioned on the same horizontal plane; the water level sensor measuring rod is positioned in the middle of the lifter, and the water level sensor and the terrain sensor are positioned on the same vertical line.
Further, the water level sensor and the terrain sensor are both ultrasonic sensors.
Further, the control end comprises a mobile phone, a computer and a PC.
A use method of a suspended solid sampling device capable of acquiring real-time relative positions comprises the following steps:
s1, controlling a motor to drive a lifter to work through a control end, so that a first sampling tube, a second sampling tube, a third sampling tube and a fourth sampling tube reach the underwater height to be sampled;
s2, when the bed surface changes, the distance d between the working surface and the bed surface is measured by a terrain sensor 2 Transmitting the control end back;
s3, controlling the motor to move through the control end to enable the distance d to be 2 Reaching a preset value;
s4, measuring the distance d between the working surface and the water surface by a water level sensor 1 And returns to the control end;
s5, passing distance d 1 And distance d 2 Calculating the height value H of the water surface 2 Height value H of terrain sensor 3 And the height value H of the bed surface 4 。
Further, the height value H of the water surface 2 Height value H of terrain sensor 3 And the height value H of the bed surface 4 The calculation formula of (2) is as follows:
H 2 ＝H 1 -d 1 (1)
H 3 ＝H 1 -d 3 (2)
H 4 ＝H 3 -d 2 (3)
in the above formula, H 1 The height of the working surface of the water level sensor from the bed surface is the height of the lifter, d 3 Is the distance between the working surface of the water level sensor and the working surface of the terrain sensor.
The beneficial effects of the invention are as follows:
(1) According to the invention, the water level sensor and the terrain sensor are adopted, so that bed surface change information caused by sediment movement can be obtained simultaneously, and the absolute position and the relative water depth position of the suspended substances from the bed surface can be controlled in real time by utilizing the information, so that the sampling accuracy is improved;
(2) According to the invention, the rule that the suspended load concentration is distributed along the vertical line is fully utilized, the distances of the plurality of sampling tubes are exponentially increased, and the minimum number of sampling tubes are arranged within the limited available distance on the premise that the distribution characteristics of the suspended load concentration can be fully reflected, so that the interference of the sampling tubes to water flow is reduced, and the sampling work efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a flow chart of the method of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. sampling plate, 2, fourth sampling tube, 3, three sampling tube, 4, second sampling tube, 5, first sampling tube, 6, lift lead screw, 7, lift, 8, motor, 9, water level sensor hack lever, 10, water level sensor, 11, topography sensor hack lever, 12, topography sensor.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1, the suspended load sampling device capable of acquiring the real-time relative position comprises a sampling plate 1, a lifter 7, a water level sensor 10 and a terrain sensor 12, wherein a first sampling tube 5, a second sampling tube 4, a third sampling tube 3 and a fourth sampling tube 2 are sequentially arranged on the sampling plate 1 from bottom to top, the upper part of the sampling plate 1 is connected with the lifter 7 through a lifter screw 6, a rotating bearing of the lifter 7 is connected with a motor 8, one side of the lifter 7 is connected with the water level sensor 10 through a water level sensor rack rod 9, the sampling plate 1 is also connected with the terrain sensor 12 through a terrain sensor rack rod 11, and the motor 8, the water level sensor 10 and the terrain sensor 12 are all connected with a control end.
In the embodiment of the present invention, the distance between the fourth sampling tube 2 and the third sampling tube 3 is 2 times the distance between the third sampling tube 3 and the second sampling tube 4, and the distance between the third sampling tube 3 and the second sampling tube 4 is 2 times the distance between the second sampling tube 4 and the first sampling tube 5.
In the embodiment of the invention, the terrain sensor rack bar 11 is positioned at the lower part of the sampling plate 1, and the working surface of the terrain sensor 12 and the first sampling tube 5 are positioned on the same horizontal plane; the water level sensor measuring rod 9 is positioned in the middle of the elevator 7, and the water level sensor 10 and the terrain sensor 12 are positioned on the same vertical line.
In the embodiment of the present invention, the water level sensor 10 and the terrain sensor 12 are both ultrasonic sensors.
In the embodiment of the invention, the control terminal comprises a mobile phone, a computer and a PC.
As shown in fig. 2, a method for using a suspended mass sampling device capable of acquiring a real-time relative position includes the following steps:
s1, controlling a motor to drive a lifter to work through a control end, so that a first sampling tube, a second sampling tube, a third sampling tube and a fourth sampling tube reach the underwater height to be sampled;
s2, when the bed surface changes, the distance d between the working surface and the bed surface is measured by a terrain sensor 2 Transmitting the control end back;
s3, controlling the motor to move through the control end to enable the distance d to be 2 Reaching a preset value;
s4, measuring the distance d between the working surface and the water surface by a water level sensor 1 And returns to the control end;
s5, passing distance d 1 And distance d 2 Calculating the height value H of the water surface 2 Height value H of terrain sensor 3 And the height value H of the bed surface 4 。
In the embodiment of the invention, the height value H of the water surface 2 Height value H of terrain sensor 3 And the height value H of the bed surface 4 The calculation formula of (2) is as follows:
H 2 ＝H 1 -d 1 (1)
H 3 ＝H 1 -d 3 (2)
H 4 ＝H 3 -d 2 (3)
on the upper partIn (H) 1 The height of the working surface of the water level sensor from the bed surface is the height of the lifter, d 3 Is the distance between the working surface of the water level sensor and the working surface of the terrain sensor.
According to the invention, 4 sampling tubes are adopted, the sampling tubes can be added according to actual demands, and the distance between the sampling tubes can be set as follows: the distance between the fourth sampling tube 2 and the third sampling tube 3 is 1.5 times the distance between the third sampling tube 3 and the second sampling tube 4, and the distance between the third sampling tube 3 and the second sampling tube 4 is 1.5 times the distance between the second sampling tube 4 and the first sampling tube 5.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (1)
1. The use method of the suspended load sampling device capable of acquiring the real-time relative position is characterized in that the suspended load sampling device capable of acquiring the real-time relative position comprises a sampling plate (1), a lifter (7), a water level sensor (10) and a terrain sensor (12), a first sampling tube (5), a second sampling tube (4), a third sampling tube (3) and a fourth sampling tube (2) are sequentially arranged on the sampling plate (1) from bottom to top, the upper part of the sampling plate (1) is connected with the lifter (7) through a lifter screw (6), a rotating bearing of the lifter (7) is connected with a motor (8), one side of the lifter (7) is connected with the water level sensor (10) through a water level sensor hack lever (9), the sampling plate (1) is also connected with the terrain sensor (12) through a terrain sensor hack lever (11), and the motor (8), the water level sensor (10) and the terrain sensor (12) are all connected with a control end;
the distance between the fourth sampling tube (2) and the third sampling tube (3) is 2 times of the distance between the third sampling tube (3) and the second sampling tube (4), and the distance between the third sampling tube (3) and the second sampling tube (4) is 2 times of the distance between the second sampling tube (4) and the first sampling tube (5);
the terrain sensor rack bar (11) is positioned at the lower part of the sampling plate (1), and the working surface of the terrain sensor (12) and the first sampling tube (5) are positioned on the same horizontal plane; the water level sensor measuring rod (9) is positioned in the middle of the lifter (7), and the water level sensor (10) and the terrain sensor (12) are positioned on the same vertical line;
the water level sensor (10) and the terrain sensor (12) are both ultrasonic sensors;
the control end comprises a mobile phone, a computer and a PC;
the application method of the suspended solid sampling device capable of acquiring the real-time relative position comprises the following steps of:
s1, controlling a motor to drive a lifter to work through a control end, so that a first sampling tube, a second sampling tube, a third sampling tube and a fourth sampling tube reach the underwater height to be sampled;
s2, when the bed surface changes, the distance d between the working surface and the bed surface is measured by a terrain sensor 2 Transmitting the control end back;
s3, controlling the motor to move through the control end to enable the distance d to be 2 Reaching a preset value;
s4, measuring the distance d between the working surface and the water surface by a water level sensor 1 And returns to the control end;
s5, passing distance d 1 And distance d 2 Calculating the height value H of the water surface 2 Height value H of terrain sensor 3 And the height value H of the bed surface 4 ；
The height value H of the water surface 2 Height value H of terrain sensor 3 And the height value H of the bed surface 4 The calculation formula of (2) is as follows:
H 2 ＝H 1 -d 1 (1)
H 3 ＝H 1 -d 3 (2)
H 4 ＝H 3 -d 2 (3)
in the above formula, H 1 The height of the working surface of the water level sensor from the bed surface is the height of the lifter, d 3 Is the distance between the working surface of the water level sensor and the working surface of the terrain sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811079210.9A CN109060448B (en) | 2018-09-14 | 2018-09-14 | Suspended load sampling device capable of acquiring real-time relative position and application method thereof |
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| CN201811079210.9A CN109060448B (en) | 2018-09-14 | 2018-09-14 | Suspended load sampling device capable of acquiring real-time relative position and application method thereof |
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| CN109060448B true CN109060448B (en) | 2023-10-20 |
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