CN106770483B - Measuring device - Google Patents
Measuring device Download PDFInfo
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- CN106770483B CN106770483B CN201611243172.7A CN201611243172A CN106770483B CN 106770483 B CN106770483 B CN 106770483B CN 201611243172 A CN201611243172 A CN 201611243172A CN 106770483 B CN106770483 B CN 106770483B
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- water
- collector
- screen
- sediment
- measuring device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/043—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a granular material
Abstract
The invention provides a measuring device, which relates to the technical field of measuring instruments and comprises a collector, a measurer and a controller; the collector is provided with a water inlet and a water outlet; a water pump is arranged between the water inlet and the water outlet; the controller controls the water pump to further control the water quantity sucked into the collector; the water inlet is provided with a first screen group which is used for filtering sediment in water, and the filtered water flows out from the water outlet; and the measurer measures the sediment quantity retained on the first screen group and transmits information to the controller. The measuring device provided by the invention has the advantages of rapidness and accuracy; meanwhile, the sediment content can be measured in real time, and continuous measurement of time dispersion can be realized.
Description
Technical Field
The invention relates to the technical field of measuring instruments, in particular to a measuring device.
Background
There are many kinds of sediment content measurement, and the sediment content can be finally classified into two main types: direct assays and indirect assays.
The direct measurement method is to measure the sediment content by sampling, filtering water in sediment, drying and weighing. The indirect measurement method is a method for determining the sand content by certain characteristics of the sediment, and comprises an atomic nucleus method and other measurement methods, wherein the indirect measurement method can be used for continuous measurement and mainly comprises a capacitance method, a vibration method, a photoelectric method, an ultrasonic method, a laser method and the like.
The main problems of the method are as follows: the direct measurement method is used for sampling, dewatering and weighing, and has high labor intensity, and is time-consuming and labor-consuming. The indirect measurement method is easy to interfere, the measurement result is unstable, and the error is larger, for example, the sediment measuring range by a photoelectric method is narrower; the capacitance method and the vibration method are greatly affected by temperature, so that the stability is poor.
Disclosure of Invention
The invention aims to provide a measuring device which is used for relieving the problems that the direct measuring method in the prior art has high labor intensity, wastes time and labor and can not realize fixed-point and continuous measurement when measuring the sediment content; the indirect measurement method is easy to be interfered, the measurement result is unstable and the error is larger.
The measuring device provided by the invention comprises a collector, a measurer and a controller; the collector is provided with a water inlet and a water outlet; a water pump is arranged between the water inlet and the water outlet; the controller controls the water pump to further control the water quantity sucked into the collector; the water inlet is provided with a first screen group which is used for filtering sediment in water, and the filtered water flows out of the water outlet through the water pump; and the measurer measures the sediment quantity retained on the first screen group and transmits information to the controller.
Further, the measurer is a resistance sensor, and the resistance sensor is connected with a power supply.
Further, the first screen group comprises a plurality of screen panels; along the direction of the water inlet to the water pump, the pore diameter of the sieve pores on the sieve plate is sequentially reduced.
Further, the number of the collectors is plural.
Further, the opening directions of the water inlets of the plurality of collectors are different.
Further, a second screen group is arranged at the water outlet of the collector; the water pump is provided with a reversible water absorption part, so that the water is sucked from the water outlet and flows out from the water inlet.
Further, a second screen group is arranged at the water outlet of the collector, and the second screen group is connected with a measurer; the water pump is provided with two water absorption parts, and the two water absorption parts face the water inlet and the water outlet respectively.
Further, the measuring device comprises a housing, the cross section of which is circular; the water inlet and the water outlet are arranged at a plurality of positions on the surface of the shell.
Further, covers are arranged on the outer sides of the water inlet and the water outlet, and the covers are connected with a controller.
Further, the measuring device also comprises a pressure sensor for measuring the depth of the measuring device under water.
The measuring device provided by the invention comprises a collector, a measurer and a controller; the collector is provided with a water inlet and a water outlet; a water pump is arranged between the water inlet and the water outlet and is used for absorbing water; the controller controls the water pump to further control the water quantity sucked into the collector; the water inlet is provided with a first screen group which is used for filtering sediment, and filtered water flows out from the water outlet through the water pump; and the measurer measures the sediment quantity retained on the first screen group and transmits information to the controller. According to the measuring device provided by the invention, the water containing the sediment is actively extracted from the water by the water pump in the collector, and the sediment quantity is measured by the sediment retained on the first screen group, so that the sediment contained in the water is obtained. Compared with the prior art that the sediment content is measured by a direct measurement method, the method has the advantages of rapidness and accuracy; meanwhile, the measuring device provided by the invention is not influenced by the external influences such as the temperature, the water flow rate and the like of water to be measured during measurement, so that the measuring device provided by the invention is not easy to interfere, the measuring result is stable, and the measuring error is small.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a measuring apparatus provided by the present invention;
FIG. 2 is a schematic view of a measuring device provided with a plurality of collectors according to the present invention;
fig. 3 is a schematic view of a screen plate of the measuring device provided by the invention;
fig. 4 is a perspective view of a measuring device provided by the invention.
Icon: 10-a housing; 20-collector; 30-a controller; 21-a first screen group; 22-a second screen group; 23-water inlet; 24-water outlet; 25-a water pump; 211-sieve plates; a 40-resistance sensor; 50-a pressure sensor; 212-sieve pores; 60-power supply.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The measuring device provided by the invention comprises a collector 20, a measurer and a controller 30, as shown in fig. 1. The collector 20 is used for collecting water containing silt. The measuring device is used for measuring the amount of sediment. The collector 20 is provided with a water inlet 23 and a water outlet 24. The water containing silt enters the collector 20 through the water inlet 23 and flows out through the water outlet 24. A water pump 25 is arranged between the water inlet 23 and the water outlet 24. The controller 30 controls the amount of water drawn into the collector 20 by controlling the water pump 25. The water inlet 23 is provided with a first screen group 21, the first screen group 21 is used for filtering sediment, and filtered water flows out from the water outlet 24. The measurer measures the amount of sediment retained on the first screen pack 21 and transmits information to the controller 30. The measuring device provided by the invention actively extracts water containing sediment in water through the water pump 25 in the collector 20, and measures the volume of the extracted water. The water pump 25 sucks the water containing the sediment into the collector 20 through the water inlet 23, and the water containing the sediment is filtered by the first screen set 21, and the sediment is retained on the first screen set 21. At this time, the controller 30 controls the water inlet 23 of the collector 20 to be closed, and water is not fed any more. Water flows out of the collector 20 from the outlet water by means of a water pump 25, where the opening of the water outlet 24 is closed. At this time, the amount of water entering the collector 20 is measured based on the water pump 25. The measurer measures the amount of sediment retained on the first screen group 21, and then the sediment content in the water sample can be obtained. The controller 30 may be out of the water and the data from the pump 25 and the meter may be directly transmitted to the controller 30.
Specifically, the measuring device may be a resistance sensor 40, and the resistance sensor 40 is connected to the power source 60 to form a circuit with the first screen group 21. Because the amounts of sediment retained on the first screen group 21 are different and have a certain quantitative relationship, the measured resistivity of the first screen group 21 is different when a current is passed through the first screen group 21. When no water passes through the first screen group 21, sediment is retained on the first screen group 21, and the resistivity of the first screen group 21 is measured by the resistance sensor 40, the sediment amount retained on the first screen group 21 can be obtained. The sediment content can be inferred by measuring the resistivity of the first screen set 21 by the resistive sensor 40. The water containing sediment enters the collector 20 through the water inlet 23, and after passing through the first screen group 21, the sediment stays on the first screen group 21, and the water pump 25 can discharge the water from the water outlet 24. At this point, the water inlet 23 is closed and the water pump 25 continues to draw in water until the water is discharged from the water outlet 24. At this time, a current is passed through the first screen group 21, and the amount of sediment remaining on the first screen group 21 can be obtained by measuring the resistivity of the first screen group 21.
The first screen group 21 may include a plurality of screen panels 211, and the screen holes 212 of the screen panels 211 may be non-uniform in size. As shown in fig. 3, a screen plate 211 having larger screen holes 212 may be provided at the opening of the collector 20; a screen deck 211 with smaller screen holes 212 may be provided inside the collector 20. When the water containing the sediment enters the collector 20 through the water inlet 23, the water firstly passes through the sieve plate 211 with larger sieve holes 212 and then passes through the sieve plate 211 with smaller sieve holes 212, and the sediment with larger diameter is retained on the sieve plate 211 with larger sieve holes 212, and the sediment with smaller diameter is retained on the sieve plate 211 with smaller sieve holes 212. After passing through the first screen pack 21, the water entering the collector 20 is less sandy. This arrangement allows as much sediment as possible to remain on the first screen pack 21, making the measurement more accurate. Each of the screen plates 211 may be connected to one of the resistance sensors 40, or may share one of the resistance sensors 40. The resistivity of the screen plate 211 is measured by the resistive sensor 40, and thus the amount of silt is obtained.
Further, the number of the collectors 20 may be plural, as shown in fig. 4. During measurement, data of a plurality of sediment amounts and water amounts can be obtained simultaneously. After acquisition, the acquired data are analyzed, and finally, reasonable data are averaged. Such an arrangement may allow for more accurate data to be collected.
Further, the opening directions of the water inlets 23 of the plurality of collectors 20 are different. The device can collect water samples in multiple directions to determine the sediment content in the water, so as to avoid the occurrence of inaccurate collected data caused by inaccurate water flow direction due to turbulent water flow or vortex at a certain collected water sample.
The collector 20 may be a sampling tube, one end of which may be a water inlet 23, and the other end may be a water outlet 24, and a water pump 25 is disposed in the middle of the sampling tube.
A second screen set 22 may be provided at the water outlet 24 of the collector 20, the second screen set 22 being connected to a resistive sensor 40. The water pump 25 is provided with a reversible water suction part, so that water is sucked from the water outlet 24 and flows out from the water inlet 23. By sucking in the water pump 25, the water containing silt can enter from the water inlet 23, pass through the water suction part of the water pump 25 and flow out from the water outlet 24; when the measurement is performed again, the water absorbing part of the water pump 25 is turned over, so that the water containing the sediment enters from the water outlet 24, passes through the second screen group 22, and most of the sediment contained in the water stays on the second screen group 22, and the water entering at this time flows out from the water inlet 23 of the collector 20 through the water absorbing part of the water pump 25. At this time, the fast flowing water flow may wash out the sediment retained on the first screen group 21 and carry away the sediment retained on the first screen group 21. At this time, the water inlet 23 is closed so that the collector 20 does not enter water any more; when the water in the collector 20 is exhausted, the water outlet 24 is closed. At this point, silt on the second screen set 22 may be measured. After the water absorption part on the water pump 25 turns over again, water containing silt enters from the water inlet 23 of the collector 20, and at the moment, the water entering the first screen group 21 passes through the water absorption part of the water pump 25 and then passes through the second screen group 22, and at the moment, the silt of the second screen group 22 measured last time can be flushed by water flow with a certain flow rate. By the arrangement, continuous measurement of sediment content can be realized.
It should be noted that, similar to the first screen group 21, the second screen group 22 may include a plurality of screen panels 211, and the sizes of the screen holes 212 of the screen panels 211 may be non-uniform. A screen plate 211 having larger screen holes 212 may be provided at the opening of the water outlet 24; a screen deck 211 with smaller screen holes 212 may be provided inside the collector 20. When water containing silt enters the collector 20 from the water outlet 24, the water passes through the sieve plate 211 with larger sieve holes 212, and passes through the sieve plate 211 with smaller sieve holes 212, the silt with larger diameter is retained on the sieve plate 211 with larger sieve holes 212, and the silt with smaller diameter is retained on the sieve plate 211 with smaller sieve holes 212. After passing through the second screen pack 22, the water entering the collector 20 is less sandy. This arrangement allows as much sediment as possible to remain on the second screen pack 22, making the measurement more accurate. Each of the screening decks 211 may be connected to a respective one of the resistive sensors 40, or the screening decks 211 may be connected to a single one of the resistive sensors 40. The resistivity of the screen plate 211 is measured by the resistive sensor 40, and thus the amount of silt is obtained.
Alternatively, the water pump 25 may be provided with two water absorbing portions facing the water inlet 23 and the water outlet 24, respectively, and the two water absorbing portions are communicated. Water can enter from the water inlet 23, pass through the first screen group 21, pass through the water absorption part, pass through the second screen group 22 and flow out from the water outlet 24; water may also enter through the water outlet 24, pass through the second screen group 22, pass through the water absorbing portion, pass through the first screen group 21, and flow out through the water inlet 23.
The measuring device may comprise a housing 10, the housing 10 may be circular in cross-section; the water inlets 23 and water outlets 24 of the plurality of the collectors 20 are disposed at a plurality of orientations on the surface of the housing 10. When the measuring device measures in the water flow, due to the turbulence or vortex of the water flow, the circular cross section of the shell 10 can enable the water flow to follow the surface of the shell 10, and compared with the rectangular cross section of the shell 10, the impact of the water flow on the shell 10 can be relieved.
Further, the shape of the housing 10 may be a sphere, as shown in fig. 4, and such an arrangement can alleviate the impact of water flow on the housing 10 when the housing 10 descends in water. Meanwhile, the shell 10 is a sphere, and compared with a cube, the volume of the shell 10 is larger under the same surface area, and more collectors 20 can be arranged in the shell 10. And meanwhile, the cost is saved. At this time, the water inlets 23 and the water outlets 24 of the plurality of collectors 20 may be disposed at different orientations of the housing 10, so that the collectors 20 collect water containing silt at a plurality of orientations. The measured data may be averaged to eliminate or alleviate the problem of inaccurate measured data of eddy currents or turbulence in the water in which the housing 10 is positioned to increase the accuracy of the measurement.
The housing 10 may further include an upper housing and a lower housing that are removably connected to facilitate replacement of the collector 20, the pressure sensor 50, and the resistance sensor 40 within the housing 10. Meanwhile, a sealing structure, such as a sealing ring, can be arranged between the upper shell and the lower shell to ensure that water does not enter the shell 10.
The measuring device further comprises a power supply 60, the pressure sensor 50 and the resistance sensor 40 being connected to the power supply 60. The power supply 60 may be a battery provided inside the casing 10, or may be provided outside the casing 10, and the pressure sensor 50 and the resistance sensor 40 are connected to the power supply 60 through insulated wires.
The outside of the water inlet 23 and the water outlet 24 may be provided with a cover, and the cover and the controller 30 are connected to control opening and closing of the cover. Before the resistance sensor 40 performs the measurement of the first screen group 21, the controller 30 controls the cover of the water inlet 23 so that water does not enter from the water inlet 23 until the water in the collector 20 is completely discharged, and the controller 30 controls the cover of the water outlet 24 so that water does not enter from the water outlet 24. When water enters from the water outlet 24 and sediment content is measured, the lid on the water outlet 24 may be closed first.
The measuring device may further comprise a pressure sensor 50 for measuring the depth of the measuring device under water. The pressure sensor 50 may be disposed within the housing 10 and coupled to the controller 30.
In summary, the measuring device provided by the present invention may include a housing 10, a controller 30, and a power source 60. A collector 20, a pressure sensor 50, and a resistance sensor 40 are provided in the housing 10. The pressure sensor 50 is used to measure the depth of the housing 10 in the water. Both ends of the collector 20 may be provided with a water inlet 23 and a water outlet 24, and a water pump 25 may be provided between the water inlet 23 and the water outlet 24. A first screen set 21 may be provided between the water inlet 23 and the water pump 25, and a second screen set 22 may be provided between the water outlet 24 and the water pump 25. The water containing the silt is sucked into the collector 20 by the water pump 25, specifically, from the water inlet 23 through the first screen set 21 into the collector 20, and the silt is retained on the first screen set 21. The cover at the water inlet 23 is closed, and after the water pump 25 discharges water from the water outlet 24, the cover at the water outlet 24 is closed. The sediment on the first screen set 21 is measured by measuring the resistivity on the first screen set 21 by the resistive sensor 40. The controller 30 controls the amount of water entering the measurer by controlling the on time and flow rate of the water pump 25. Finally, the resistance sensor 40 transmits information of the sediment amount, the opening time and the flow rate of the water pump 25 to the controller 30, and the sediment content in the water is obtained through data on the controller 30. During measurement, water containing sediment can also enter from the water outlet 24, enter the water pump 25 through the second screen group 22, pass through the first screen group 21 and flow out from the water inlet 23. At this time, the sediment retained on the first screen group 21 is carried away by the water with a certain flow rate, so as to facilitate the next measurement. By using the measuring device provided by the invention, a plurality of collectors 20 can be arranged in different directions to carry out multiple measurements, and finally, the measured data can be averaged to achieve the purpose of accurate measurement. The shell 10 can be arranged as a sphere, so that the resistance of the shell 10 in water can be reduced, and the measurement is convenient. By using the measuring device provided by the invention, the water containing sediment is actively extracted from the water by the water pump 25 in the collector 20, and the sediment quantity in the water is measured by the sediment retained on the first screen group 21 and the second screen group 22. Compared with the direct measurement in the prior art, the method can achieve the purpose of convenient and simple measurement, and can simultaneously and continuously measure at different places. Meanwhile, compared with the device for measuring silt by an indirect measuring method in the prior art, the measuring device provided by the invention is not easy to be interfered by external conditions such as temperature, water flow and the like, can be used for carrying out continuous measurement for a plurality of times, and simultaneously collects a plurality of groups of data, so that the measured data is more accurate and has smaller error.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. A measuring device, characterized in that the measuring device comprises a collector, a measurer and a controller;
the collector is provided with a water inlet and a water outlet; a water pump is arranged between the water inlet and the water outlet; the controller controls the water pump to further control the water quantity sucked into the collector;
the water inlet is provided with a first screen group which is used for filtering sediment in water, and the filtered water flows out of the water outlet through the water pump; the measurer measures the sediment quantity retained on the first screen group and transmits information to the controller; the measurer is a resistance sensor, and the resistance sensor is connected with a power supply;
the measuring device comprises a shell, wherein the cross section of the shell is circular; the water inlet and the water outlet are arranged at a plurality of positions on the surface of the shell.
2. The measurement device of claim 1, wherein the first screen set comprises a plurality of screen panels; along the direction of the water inlet to the water pump, the pore diameter of the sieve pores on the sieve plate is sequentially reduced.
3. The measurement device of claim 1, wherein the number of collectors is a plurality.
4. A measuring device according to claim 3, wherein the directions of openings of the water inlets of the plurality of collectors are different.
5. The measuring device according to claim 1, characterized in that a second screen group is provided at the water outlet of the collector, the second screen group being connected to a measurer; the water pump is provided with a reversible water absorption part, so that the water is sucked from the water outlet and flows out from the water inlet.
6. The measurement device of claim 1, wherein a second screen set is provided at the water outlet of the collector; the water pump is provided with two water absorption parts, and the two water absorption parts face the water inlet and the water outlet respectively.
7. The measuring device according to claim 1, wherein a cover is provided on the outside of the water inlet and the water outlet, the cover being connected to the controller.
8. The measurement device of any one of claims 1-7, further comprising a pressure sensor for measuring the depth of the measurement device under water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243172.7A CN106770483B (en) | 2016-12-29 | 2016-12-29 | Measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243172.7A CN106770483B (en) | 2016-12-29 | 2016-12-29 | Measuring device |
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| CN106770483A CN106770483A (en) | 2017-05-31 |
| CN106770483B true CN106770483B (en) | 2023-10-20 |
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| CN201611243172.7A Active CN106770483B (en) | 2016-12-29 | 2016-12-29 | Measuring device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107328913A (en) * | 2017-07-26 | 2017-11-07 | 中国农业大学烟台研究院 | A kind of suitable silt ratio judgment means of latent bottom class aquatic livestock |
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| CN106802132A (en) * | 2017-01-18 | 2017-06-06 | 青岛海洋地质研究所 | A kind of penetration type Multifunction fishing bottom sediment in-situ observation feeler lever |
| CN213516477U (en) * | 2020-10-12 | 2021-06-22 | 贵州益华高科技有限公司 | Water quality sampler |
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| GB792001A (en) * | 1955-01-24 | 1958-03-19 | Lime Sand Mortar Ltd | Apparatus for measuring the moisture content of sand or the like |
| CN2442259Y (en) * | 2000-08-11 | 2001-08-08 | 西北农林科技大学 | Portable measurer for sand and mud content of flow |
| CN2454777Y (en) * | 2000-08-11 | 2001-10-17 | 西北农林科技大学 | Capacitor type watew-flow slit-content sensor |
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| CN1464300A (en) * | 2002-06-25 | 2003-12-31 | 中国农业大学 | Apparatus for continuous and automatic measurement of radial flow sediment content |
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| CN104407227A (en) * | 2014-11-05 | 2015-03-11 | 贝兹维仪器(苏州)有限公司 | Power grid pole mud resistivity measurement system |
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| CN213516477U (en) * | 2020-10-12 | 2021-06-22 | 贵州益华高科技有限公司 | Water quality sampler |
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|---|---|
| CN106770483A (en) | 2017-05-31 |
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