CN112394186B - Sampling detection device for water quality detection - Google Patents
Sampling detection device for water quality detection Download PDFInfo
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- CN112394186B CN112394186B CN202011602474.5A CN202011602474A CN112394186B CN 112394186 B CN112394186 B CN 112394186B CN 202011602474 A CN202011602474 A CN 202011602474A CN 112394186 B CN112394186 B CN 112394186B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 197
- 238000005070 sampling Methods 0.000 title claims abstract description 69
- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 65
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 238000012372 quality testing Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims 5
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 94
- 238000000034 method Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 230000003993 interaction Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
-
- 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
- G01N1/18—Devices for withdrawing samples in the liquid or fluent state with provision for splitting samples into portions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
- G01N35/1016—Control of the volume dispensed or introduced
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1065—Multiple transfer devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1095—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers
- G01N35/1097—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers characterised by the valves
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B2035/006—Unmanned surface vessels, e.g. remotely controlled
- B63B2035/008—Unmanned surface vessels, e.g. remotely controlled remotely controlled
-
- 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
- G01N2001/021—Correlating sampling sites with geographical information, e.g. GPS
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N2035/00178—Special arrangements of analysers
- G01N2035/00277—Special precautions to avoid contamination (e.g. enclosures, glove- boxes, sealed sample carriers, disposal of contaminated material)
- G01N2035/00287—Special precautions to avoid contamination (e.g. enclosures, glove- boxes, sealed sample carriers, disposal of contaminated material) movable lid/cover for sample or reaction tubes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- General Physics & Mathematics (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Health & Medical Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Hydrology & Water Resources (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention belongs to the technical field of environmental monitoring, and particularly relates to a sampling detection device for water quality detection, which comprises a sample cell, a sampling mechanism, a sample liquid suction mechanism and a water quality analyzer, wherein the sample cell, the sampling mechanism, the sample liquid suction mechanism and the water quality analyzer are arranged on an unmanned ship; the plurality of sample tanks are arranged, and electromagnetic valves are arranged between each sample tank and the water quality analyzer; the sample liquid suction mechanism comprises an overflow tank, the overflow tank is respectively communicated with the water quality analyzer and the vacuum pump through pipelines, the sample liquid suction mechanism sucks sample liquid in the sample tank to the water quality analyzer in an over-travel suction mode, namely, the sample liquid suction mechanism continues to suck for a period of time after the water quality analyzer is filled with the sample liquid, so that the sample liquid which firstly enters the water quality analyzer is sucked into the overflow tank, and the detection precision is further improved.
Description
Technical Field
The invention belongs to the technical field of environmental monitoring, and particularly relates to a sampling detection device for water quality detection.
Background
The difficulty of water pollution control is increased along with the increasing of the treatment degree, and mainly because of the illegal theft and discharge phenomenon of a plurality of enterprises, the water quality of the water body detected by a plurality of monitoring sections still does not reach the standard at present, the pollution source is difficult to find, and the phenomenon of difficult supervision and evidence obtaining of government departments in the law enforcement process is more remarkable. For this reason, shortage of law enforcement resources and limited effort are often key factors, and a brand-new water pollution detection system is needed to replace manual detection. Nowadays, intelligent carriers such as unmanned aerial vehicles, unmanned ships and the like are gradually introduced into the field of environmental monitoring, but a plurality of difficulties still exist in the practical application process. For example, the unmanned carrier has limited bearing capacity, continuous sampling detection of long-time high frequency cannot be performed, and a container pipeline and the like cannot be effectively cleaned in the sampling process, so that mutual interference exists among different samples, and accuracy of detection data is affected.
Disclosure of Invention
The invention aims to provide a sampling detection device for water quality detection, which can avoid front and rear water sample interference and improve detection accuracy while realizing continuous sampling detection.
The technical scheme adopted by the invention is as follows:
the sampling detection device for water quality detection comprises a sample tank, a sampling mechanism, a sample liquid suction mechanism and a water quality analyzer, wherein the sample tank, the sampling mechanism, the sample liquid suction mechanism and the water quality analyzer are arranged on an unmanned ship, the sampling mechanism is used for collecting a water body sample in a target water area into the sample tank, the sample liquid suction mechanism is used for sucking sample liquid in the sample tank into the water quality analyzer, and the water quality analyzer is used for detecting water sample parameters; the plurality of sample tanks are arranged, electromagnetic valves are arranged between each sample tank and the water quality analyzer, and the electromagnetic valves are assembled to enable each sample tank to be selectively communicated with the water quality analyzer; the sample liquid suction mechanism comprises an overflow tank, the overflow tank is respectively communicated with the water quality analyzer and the vacuum pump through pipelines, the sample liquid suction mechanism sucks sample liquid in the sample tank to the water quality analyzer in an over-travel suction mode, namely, the sample liquid suction mechanism continues to suck for a period of time after the water quality analyzer is filled with the sample liquid, so that the sample liquid which firstly enters the water quality analyzer is sucked into the overflow tank.
The bottom of the water quality analyzer is provided with a first liquid discharge valve, and the bottom of the overflow pool is provided with a second liquid discharge valve.
The sampling mechanism comprises an arch flow passage, the front end of the arch flow passage obliquely downwards extends to the bottom of the front end of the ship body, the rear end of the arch flow passage extends to the tail of the ship body, the middle part of the arch flow passage is provided with an arch section which is arched upwards, a sample tank is arranged below the arch section, a shunt pipe used for communicating the arch section and the sample tank is arranged between the arch section and the sample tank, a movable door is arranged in the arch section, and the movable door is assembled into the following two stations: the first station is that the movable gate seals the shunt pipe so that the water sample flowing in from the front end of the arched flow channel is directly discharged from the rear end of the arched flow channel to clean the inner wall of the arched flow channel; the second station is used for sealing a channel between the arch section and the rear end of the arch flow channel by the movable door so that a water sample flowing in from the front end of the arch flow channel enters the sample cell from the shunt tube; the device also comprises a flushing mechanism, wherein the flushing mechanism is assembled to enable the water body in the sampling area to be poured into the sample tank and then enable the water body to be discharged from the sample tank so as to clean liquid remained in the sample tank during the previous sampling.
The sample cell comprises a cylindrical body, wherein the axial direction of the cylindrical body is arranged along the front-back direction of the ship body, two ends of the cylindrical body are respectively provided with an end cover, the end covers are pivoted with the cylindrical body to enable the two ends of the cylindrical body to be closed or opened, and the end faces of the end covers are in a horizontal state when the end covers are opened; the flushing mechanism comprises a driving component used for driving the sample cell to reciprocate along the vertical direction, the driving component is assembled to open the end covers at the two ends of the cylindrical body and then drive the cylindrical body and the end covers to be immersed in the water body of the sampling area when the driving component drives the sample cell to descend, and can firstly drive the cylindrical body and the end covers to float out of the water body of the sampling area and then drive the end covers at the two ends of the cylindrical body to be closed when the driving component drives the sample cell to ascend.
The driving member comprises a piston cylinder arranged on the mounting bracket along the vertical direction, a piston rod of the piston cylinder is fixedly connected with a driving frame, a swing arm is arranged on a pivot between the end cover and the cylindrical body, a pin shaft is arranged at the end part of the swing arm, a horizontal waist-shaped hole is arranged on the driving frame, the pin shaft is in sliding pivot fit with the horizontal waist-shaped hole, the cylindrical body is movably connected with the mounting bracket along the vertical direction, a first elastic unit is arranged between the cylindrical body and the mounting bracket, the first elastic unit is assembled to enable the cylindrical body to be driven to ascend by the elasticity of the first elastic unit, and a limiting part which is in blocking connection with the mounting bracket is arranged above the cylindrical body.
A linkage mechanism is arranged between the sample cell and the movable door, and the linkage mechanism is assembled to enable the movable door to be switched from the station two to the station one when the driving component drives the sample cell to move downwards, and enable the movable door to be switched from the station one to the station two when the driving component drives the sample cell to move upwards; the shunt tube is fixedly connected with the mounting bracket, the shunt tube and a liquid inlet hole formed in the cylindrical body form movable plug-in fit along the vertical direction, the linkage mechanism comprises a push rod movably arranged in the shunt tube along the vertical direction, the movable door is pivoted on the bottom wall of the arched flow channel along the horizontal axis, one end of the movable door, which is far away from the pivot, is arranged towards the front end of the arched flow channel and covers the upper end of the shunt tube, a sliding chute is formed in the bottom of the movable door, the upper end of the push rod is slidingly pivoted with the sliding chute, when the push rod is upwards arranged, the movable door can be lifted to be positioned at the second station, and when the push rod is downwards arranged, the movable door can be pulled down to be positioned at the first station; the device is characterized in that a second elastic unit is arranged between the ejector rod and the shunt tube, the second elastic unit is assembled to enable the ejector rod to be driven to descend by the elasticity of the second elastic unit, a baffle is arranged in the cylindrical body and is in blocking connection with the lower end of the ejector rod, and when the driving member drives the sample cell to ascend, the baffle can lift the ejector rod upwards.
The front end of the arched flow passage is provided with a water collecting device which is assembled to have the following two stations: station a, the front end of the arch flow channel is closed by the water collecting device, and station b, the front end of the arch flow channel is opened by the water collecting device and forms a funnel-shaped structure so that water flow in front of the ship body is accelerated to be injected into the arch flow channel.
The water collecting device comprises a mounting seat arranged at the bottom of the front end of the ship body and a water shoveling plate pivoted with the mounting seat, wherein two sides of the water shoveling plate are provided with side plates, each side plate comprises a first sector and a second sector, the centers of the first sector and the second sector are positioned on the pivot axis of the water shoveling plate, the first sector is arranged towards the front of the water shoveling plate, the second sector is arranged towards the rear of the water shoveling plate, and the radius of the first sector is larger than that of the second sector; a drainage hole is arranged on the mounting seat at the rear end of the water shoveling plate and is communicated with the front end of the arched flow passage; when the front end of the water shoveling plate is inclined downwards, the front end of the water shoveling plate can be submerged below the liquid level of the sampling water area, the rear end of the water shoveling plate is flush with the bottom surface of the drainage hole, and at the moment, the water shoveling plate, the two side plates and the bottom wall of the mounting seat are jointly enclosed to form the funnel-shaped structure; when the front end of the water shoveling plate is inclined upwards, the front end of the water shoveling plate is closed with the bottom wall of the mounting seat, the rear end of the water shoveling plate is inclined downwards and separated from the mounting seat, and at the moment, water in the front half section of the arched flow channel can flow back downwards and be discharged from a gap between the rear end of the water shoveling plate and the mounting seat; still include water collecting actuating mechanism, water collecting actuating mechanism includes connecting rod, slide bar, pivot, peach-shaped wheel and motor, the slide bar is along vertical direction and mount pad sliding connection, and peach-shaped wheel and pivot rigid coupling, pivot along hull width direction level rotation setting, and the pivot is connected with motor drive, the one end and the slide bar pin joint of connecting rod, the other end with the curb plate pin joint, the slide bar upper end is equipped with the spacer pin, and the spacer pin is kept off with peach-shaped wheel upper end face and is connected, is equipped with the third elastic element between slide bar and the mount pad, and the third elastic element is assembled to its elasticity and can drive the slide bar and descend.
The arch flow channel, the sample pool, the water collecting devices and the water collecting driving mechanisms are all provided with a plurality of groups along the width direction of the ship body, and the peach-shaped wheels of the water collecting driving mechanisms of the water collecting devices are fixedly connected with the same rotating shaft.
A water quality sampling detection system based on an unmanned ship comprises the sampling detection device for water quality detection.
The invention has the technical effects that: according to the invention, the over-travel suction mode is utilized to discharge the residual sample liquid in the detection instrument during the previous detection, so that the detection precision is improved, and the movable door and the flushing mechanism are utilized to flush the sampling pipeline and the sample tank, so that the pollution of the residual sample liquid to the new sample liquid during the sampling stage is avoided, and the detection precision is further improved.
Drawings
FIG. 1 is a schematic perspective view of an unmanned water quality testing vessel according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of an unmanned water quality testing vessel according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a sampling module according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a sampling module provided by an embodiment of the present invention;
fig. 5 is a schematic perspective view of a water collecting device according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of one of the states of the water collecting device provided by the embodiment of the present invention;
FIG. 7 is a cross-sectional view showing another state of the water collecting device according to the embodiment of the present invention;
FIG. 8 is a schematic perspective view of a water shovel according to an embodiment of the present invention;
fig. 9 is a schematic perspective view of a detection module according to an embodiment of the present invention;
FIG. 10 is a functional block diagram of an unmanned ship-based water quality testing system provided by an embodiment of the present invention;
the power mechanism of the unmanned ship is hidden in the figure, and the specific form of the power mechanism can be selected from the prior art.
Detailed Description
The present invention will be specifically described with reference to examples below in order to make the objects and advantages of the present invention more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the invention and does not limit the scope of the invention strictly as claimed.
Example 1
As shown in fig. 1, 2 and 10, the water quality sampling and detecting system based on the unmanned ship comprises a sampling module, a detecting module 30, a GPS positioning module, a power control module of the unmanned ship 10, a sampling and detecting control module, a data processing module and a man-machine interaction module, wherein the sampling module, the detecting module 30 and the GPS positioning module are arranged on the unmanned ship 10; the system also comprises a wireless communication module for realizing data transmission between the unmanned ship 10 and the remote terminal equipment; the system comprises a sampling module, a detection module 30, a wireless communication module, a data processing module, a man-machine interaction module, a unmanned ship 10 power control module, a sampling detection control module, a satellite map data and a man-machine interaction module, wherein the sampling module is used for collecting a water sample in a target water area, the water sample collected by the sampling module is conveyed to the detection module 30, detection data of the detection module 30 and coordinate data of the GPS positioning module are sent to the data processing module through the wireless communication module, the unmanned ship 10 power control module controls and plans a navigation path of the unmanned ship 10 through the wireless communication module, the sampling detection control module controls sampling detection frequency and sampling detection period of the sampling module and the detection module 30 through the wireless communication module, the data processing module receives the detection data and the GPS coordinate data, performs graphical processing on the detection data in combination with the satellite map data, and then sends the processed data to the man-machine interaction module, and the man-machine interaction module is used for displaying graphical data of water quality parameters and inputting control instructions and sampling detection control instructions of the unmanned ship 10.
As shown in fig. 3 and 4, the sampling module includes an arch flow channel 21, the front end of the arch flow channel 21 extends obliquely downwards to the bottom of the front end of the hull, the rear end of the arch flow channel 21 extends to the tail of the hull, the middle of the arch flow channel 21 has an arch section that arches upwards, a sample tank 20 is arranged below the arch section, a shunt tube 211 for communicating the arch section and the sample tank 20 is arranged between the arch section and the sample tank 20, a movable door 213 is arranged in the arch section, and the movable door 213 is assembled to have two stations: the movable door 213 seals the shunt tube 211 to enable the water sample flowing in from the front end of the arched flow channel 21 to be directly discharged from the rear end of the arched flow channel 21 so as to clean the inner wall of the arched flow channel 21; and a second station, wherein the movable door 213 seals the channel between the arch section and the rear end of the arch flow channel 21, so that the water sample flowing in from the front end of the arch flow channel 21 enters the sample cell 20 from the shunt tube 211; and a flushing mechanism configured to flush the water in the sampling area into the sample cell 20 and then drain the water from the sample cell 20 to clean the liquid remaining in the sample cell 20 from the previous sampling.
Specifically, the sample cell 20 includes a cylindrical body 201, the axis direction of the cylindrical body 201 is arranged along the fore-and-aft direction of the hull, two ends of the cylindrical body 201 are respectively provided with an end cover 202, the end covers 202 are pivoted with the cylindrical body 201 to enable the end covers 202 to close or open the two ends of the cylindrical body 201, and when the end covers 202 are opened, the end surfaces of the end covers 202 are in a horizontal state; the flushing mechanism comprises a driving member for driving the sample cell 20 to reciprocate along the vertical direction, wherein the driving member is assembled to enable the end covers 202 at two ends of the cylindrical body to be firstly opened and then drive the cylindrical body 201 and the end covers 202 to be immersed in the water body of the sampling area when the driving member drives the sample cell 20 to descend, and enable the cylindrical body 201 and the end covers 202 to be firstly driven to be lifted out of the water body of the sampling area and then drive the end covers 202 at two ends of the cylindrical body 201 to be closed when the driving member drives the sample cell 20 to ascend; the driving member comprises a piston cylinder 206 arranged on the mounting bracket 203 along the vertical direction, a piston rod of the piston cylinder 206 is fixedly connected with a driving frame 204, a swing arm 208 is arranged on a pivot between the end cover 202 and the cylindrical body 201, a pin shaft is arranged at the end part of the swing arm 208, a horizontal waist-shaped hole is arranged on the driving frame 204, the pin shaft is in sliding pivot joint with the horizontal waist-shaped hole, the cylindrical body 201 is movably connected with the mounting bracket 203 along the vertical direction, a first elastic unit 205 is arranged between the cylindrical body 201 and the mounting bracket 203, the first elastic unit 205 is assembled to enable the cylindrical body 201 to be driven to move upwards by elastic force, and a limiting part 207 which is in blocking connection with the mounting bracket 203 is arranged above the cylindrical body 201.
Further, as shown in fig. 4, a linkage mechanism is disposed between the sample cell 20 and the movable door 213, and the linkage mechanism is configured to enable the movable door 213 to switch from the second station to the first station when the driving member drives the sample cell 20 downward, and enable the movable door 213 to switch from the first station to the second station when the driving member drives the sample cell 20 upward; the shunt tube 211 is fixedly connected with the mounting bracket 203, the shunt tube 211 and a liquid inlet hole formed in the cylindrical body 201 form movable plug-in fit along the vertical direction, the linkage mechanism comprises a push rod 212 movably arranged in the shunt tube 211 along the vertical direction, the movable door 213 is pivoted on the bottom wall of the arch flow channel 21 along the horizontal axis, one end of the movable door 213, which is far away from the pivot, is arranged towards the front end of the arch flow channel 21 and covers the upper end of the shunt tube 211, a sliding groove is formed in the bottom of the movable door 213, the upper end of the push rod 212 is slidingly pivoted with the sliding groove, when the push rod 212 is upwards arranged, the movable door 213 can be lifted to be positioned at the second station, and when the push rod 212 is downwards arranged, the movable door 213 can be pulled down to be positioned at the first station; a second elastic unit 214 is arranged between the ejector rod 212 and the shunt tube 211, the second elastic unit 214 is assembled so that the ejector rod 212 can be driven to descend by the elasticity of the second elastic unit 214, a baffle 209 is arranged in the cylindrical body 201, the baffle 209 is blocked with the lower end of the ejector rod 212, and the baffle 209 can lift the ejector rod 212 upwards when the driving member drives the sample cell 20 to ascend.
Further, as shown in fig. 5 to 8, the front end of the arched flow channel 21 is provided with a water collecting device 40, and the water collecting device 40 is assembled to have the following two working positions: station a, the water collecting device 40 closes the front end of the arch flow channel 21, and station b, the water collecting device 40 opens the front end of the arch flow channel 21 and forms a funnel structure so that the water flow in front of the ship body is accelerated to be injected into the arch flow channel 21.
Specifically, the water collecting device 40 includes a mounting seat 41 disposed at the bottom of the front end of the hull, and a water shoveling plate 42 pivotally connected to the mounting seat 41, side plates 43 are disposed on two sides of the water shoveling plate 42, the side plates 43 include a first sector 431 and a second sector 432, the centers of the first sector 431 and the second sector 432 are located on the pivot axis of the water shoveling plate 42, the first sector 431 is disposed towards the front of the water shoveling plate 42, the second sector 432 is disposed towards the rear of the water shoveling plate 42, the "front and rear" is defined by the hull direction generally called standard, and the radius of the first sector 431 is larger than the radius of the second sector 432; a drainage hole 411 is arranged on the mounting seat 41 at the rear end of the water shoveling plate 42, and the drainage hole 411 is communicated with the front end of the arched flow channel 21; when the front end of the water shoveling plate 42 is inclined downwards, the front end of the water shoveling plate 42 can be submerged below the liquid level of the sampling water area, the rear end of the water shoveling plate 42 is flush with the bottom surface of the drainage hole 411, and at the moment, the water shoveling plate 42, the two side plates 43 and the bottom wall of the mounting seat 41 are jointly enclosed to form the funnel-shaped structure; when the front end of the water shoveling plate 42 is inclined upwards, the front end of the water shoveling plate 42 is closed with the bottom wall of the mounting seat 41, and the rear end of the water shoveling plate 42 is inclined downwards and separated from the mounting seat 41, at this time, the water in the front half section of the arched flow channel 21 can flow back downwards and be discharged from the gap between the rear end of the water shoveling plate 42 and the mounting seat 41.
Preferably, the ship comprises a water collecting driving mechanism, wherein the water collecting driving mechanism comprises a connecting rod 44, a sliding rod 45, a rotating shaft 49, a peach-shaped wheel 48 and a motor, the sliding rod 45 is in sliding connection with the mounting seat 41 along the vertical direction, the peach-shaped wheel 48 is fixedly connected with the rotating shaft 49, the rotating shaft 49 is horizontally rotated along the width direction of the ship body, the rotating shaft 49 is in transmission connection with the motor, one end of the connecting rod 44 is pivoted with the sliding rod 45, the other end of the connecting rod is pivoted with the side plate 43, a blocking pin 47 is arranged at the upper end of the sliding rod 45, the blocking pin 47 is blocked with the upper end wheel surface of the peach-shaped wheel 48, a third elastic unit 46 is arranged between the sliding rod 45 and the mounting seat 41, and the third elastic unit 46 is assembled so that the elastic force of the third elastic unit can drive the sliding rod 45 to descend.
Preferably, the arch flow channel 21, the sample tank 20, the water collecting devices 40 and the water collecting driving mechanisms are all provided with a plurality of groups along the width direction of the ship body, and the peach-shaped wheels 48 of the water collecting driving mechanisms of the water collecting devices 40 are fixedly connected with the same rotating shaft 49.
As shown in fig. 9, the detection module 30 includes a sample liquid sucking mechanism for sucking the sample liquid in the sample cell 20 into the water quality analyzer 32, and a water quality analyzer 32 for detecting water sample parameters; the plurality of sample cells 20 are arranged, an electromagnetic valve 31 is arranged between each sample cell 20 and the water quality analyzer 32, and the electromagnetic valve 31 is assembled to enable each sample cell 20 to be selectively communicated with the water quality analyzer 32; the sample liquid sucking mechanism comprises an overflow tank 33, the overflow tank 33 is respectively communicated with the water quality analyzer 32 and the vacuum pump through pipelines, the sample liquid sucking mechanism sucks the sample liquid in the sample tank 20 to the water quality analyzer 32 in an over-travel sucking mode, namely, the sample liquid sucking mechanism continues sucking for a period of time after the water quality analyzer 32 is filled with the sample liquid, so that the sample liquid which firstly enters the water quality analyzer 32 is sucked into the overflow tank 33. The bottom of the water quality analyzer 32 is provided with a first drain valve 35, and the bottom of the overflow tank 33 is provided with a second drain valve 36. The electromagnetic valve 31 is communicated with a sampling tube on the mounting bracket 203 through a pipeline, and the sampling tube and a sampling hole formed in the sample cell 20 form movable plug-in connection.
Example 2
The continuous on-line water body detection method based on the unmanned ship 10 comprises the following steps:
step 1: the method comprises the steps that a water body sample of a target water area on the voyage of a ship is collected into a sample pool 20 by utilizing a ship-borne sampling module, and the ship replaces the sample pool 20 for sampling every time the ship passes through a section of preset stroke;
step 2: pumping the water sample in the sample cell 20 into the on-board water quality analyzer 32;
step 3: the water quality analyzer 32 detects the water quality parameter and transmits the water quality parameter to a remote terminal through a wireless communication module;
step 4: draining the sample liquid in the detected sample cell 20 and the water quality analyzer 32;
step 5: flushing the sample tank 20 and the sampling pipeline by utilizing the water body of the new target water area, and waiting for the next sampling;
in the step 2, when the water sample is sucked into the water quality analyzer 32, an over-travel suction mode is adopted, that is, when the water quality analyzer 32 is full of the sample liquid, the suction is continued for a period of time, so that part of the sample liquid initially entering the water quality analyzer 32 is discharged from the water quality analyzer 32, and the residual sample liquid in the water quality analyzer 32 at the time of the last detection is washed.
In the step 5, the cleaning method of the sampling pipeline comprises the following steps: the movable door 213 is adjusted to the first position, so that the water in the arched flow channel 21 directly flows from the arched flow channel 21 for a period of time without passing through the sample cell 20.
In the step 5, the method for washing the sample cell 20 is as follows: the driving mechanism drives the two end caps 202 of the sample cell 20 to open, and then drives the cylindrical body 201 and the two end caps 202 to sink into the water below the ship, so that the cylindrical body 201 and the end caps 202 are flushed in the water for a period of time.
In the step 2, the sample solution in the sample cell 20 is sucked to the water quality analyzer 32 by the sample solution sucking mechanism.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (6)
1. A sampling detection device for water quality testing, its characterized in that: the water sample collection device comprises a sample tank, a sampling mechanism, a sample liquid suction mechanism and a water quality analyzer, wherein the sample tank, the sampling mechanism, the sample liquid suction mechanism and the water quality analyzer are arranged on an unmanned ship, the sampling mechanism is used for collecting a water sample in a target water area into the sample tank, the sample liquid suction mechanism is used for sucking the sample liquid in the sample tank into the water quality analyzer, and the water quality analyzer is used for detecting water sample parameters; the plurality of sample tanks are arranged, electromagnetic valves are arranged between each sample tank and the water quality analyzer, and the electromagnetic valves are assembled to enable each sample tank to be selectively communicated with the water quality analyzer; the sample liquid suction mechanism comprises an overflow pool, the overflow pool is respectively communicated with the water quality analyzer and the vacuum pump through pipelines, the sample liquid suction mechanism sucks sample liquid in the sample pool to the water quality analyzer in an over-travel suction mode, namely, the sample liquid suction mechanism continues to suck for a period of time after the water quality analyzer is filled with the sample liquid, so that the sample liquid which firstly enters the water quality analyzer is sucked into the overflow pool;
the sampling mechanism comprises an arch flow passage, the front end of the arch flow passage obliquely downwards extends to the bottom of the front end of the ship body, the rear end of the arch flow passage extends to the tail of the ship body, the middle part of the arch flow passage is provided with an arch section which is arched upwards, a sample tank is arranged below the arch section, a shunt pipe used for communicating the arch section and the sample tank is arranged between the arch section and the sample tank, a movable door is arranged in the arch section, and the movable door is assembled into the following two stations: the first station is that the movable gate seals the shunt pipe so that the water sample flowing in from the front end of the arched flow channel is directly discharged from the rear end of the arched flow channel to clean the inner wall of the arched flow channel; the second station is used for sealing a channel between the arch section and the rear end of the arch flow channel by the movable door so that a water sample flowing in from the front end of the arch flow channel enters the sample cell from the shunt tube; the device also comprises a flushing mechanism, wherein the flushing mechanism is assembled to enable the water body in the sampling area to be poured into the sample tank and then enable the water body to be discharged from the sample tank so as to clean the liquid remained in the sample tank during the previous sampling;
the sample cell comprises a cylindrical body, wherein the axial direction of the cylindrical body is arranged along the front-back direction of the ship body, two ends of the cylindrical body are respectively provided with an end cover, the end covers are pivoted with the cylindrical body to enable the two ends of the cylindrical body to be closed or opened, and the end faces of the end covers are in a horizontal state when the end covers are opened; the flushing mechanism comprises a driving component for driving the sample cell to reciprocate along the vertical direction, wherein the driving component is assembled to firstly open the end covers at the two ends of the cylindrical body and then drive the cylindrical body and the end covers to be immersed in the water body of the sampling area when the driving component drives the sample cell to descend, and can firstly drive the cylindrical body and the end covers to float out of the water body of the sampling area and then drive the end covers at the two ends of the cylindrical body to be closed when the driving component drives the sample cell to ascend;
the driving member comprises a piston cylinder arranged on the mounting bracket along the vertical direction, a piston rod of the piston cylinder is fixedly connected with a driving frame, a swing arm is arranged on a pivot between the end cover and the cylindrical body, a pin shaft is arranged at the end part of the swing arm, a horizontal waist-shaped hole is arranged on the driving frame, the pin shaft is in sliding and pin joint fit with the horizontal waist-shaped hole, the cylindrical body is movably connected with the mounting bracket along the vertical direction, a first elastic unit is arranged between the cylindrical body and the mounting bracket, the first elastic unit is assembled to enable the cylindrical body to be driven to ascend by the elasticity of the first elastic unit, and a limiting part which is blocked and connected with the mounting bracket is arranged above the cylindrical body;
a linkage mechanism is arranged between the sample cell and the movable door, and the linkage mechanism is assembled to enable the movable door to be switched from the station two to the station one when the driving component drives the sample cell to move downwards, and enable the movable door to be switched from the station one to the station two when the driving component drives the sample cell to move upwards; the shunt tube is fixedly connected with the mounting bracket, the shunt tube and a liquid inlet hole formed in the cylindrical body form movable plug-in fit along the vertical direction, the linkage mechanism comprises a push rod movably arranged in the shunt tube along the vertical direction, the movable door is pivoted on the bottom wall of the arched flow channel along the horizontal axis, one end of the movable door, which is far away from the pivot, is arranged towards the front end of the arched flow channel and covers the upper end of the shunt tube, a sliding chute is formed in the bottom of the movable door, the upper end of the push rod is slidingly pivoted with the sliding chute, when the push rod is upwards arranged, the movable door can be lifted to be positioned at the second station, and when the push rod is downwards arranged, the movable door can be pulled down to be positioned at the first station; the device is characterized in that a second elastic unit is arranged between the ejector rod and the shunt tube, the second elastic unit is assembled to enable the ejector rod to be driven to descend by the elasticity of the second elastic unit, a baffle is arranged in the cylindrical body and is in blocking connection with the lower end of the ejector rod, and when the driving member drives the sample cell to ascend, the baffle can lift the ejector rod upwards.
2. The sampling test device for water quality testing according to claim 1, wherein: the bottom of the water quality analyzer is provided with a first liquid discharge valve, and the bottom of the overflow pool is provided with a second liquid discharge valve.
3. The sampling test device for water quality testing according to claim 1, wherein: the front end of the arched flow passage is provided with a water collecting device which is assembled to have the following two stations: station a, the front end of the arch flow channel is closed by the water collecting device, and station b, the front end of the arch flow channel is opened by the water collecting device and forms a funnel-shaped structure so that water flow in front of the ship body is accelerated to be injected into the arch flow channel.
4. A sampling test device for water quality testing according to claim 3, wherein: the water collecting device comprises a mounting seat arranged at the bottom of the front end of the ship body and a water shoveling plate pivoted with the mounting seat, wherein two sides of the water shoveling plate are provided with side plates, each side plate comprises a first sector and a second sector, the centers of the first sector and the second sector are positioned on the pivot axis of the water shoveling plate, the first sector is arranged towards the front of the water shoveling plate, the second sector is arranged towards the rear of the water shoveling plate, and the radius of the first sector is larger than that of the second sector; a drainage hole is arranged on the mounting seat at the rear end of the water shoveling plate and is communicated with the front end of the arched flow passage; when the front end of the water shoveling plate is inclined downwards, the front end of the water shoveling plate can be submerged below the liquid level of the sampling water area, the rear end of the water shoveling plate is flush with the bottom surface of the drainage hole, and at the moment, the water shoveling plate, the two side plates and the bottom wall of the mounting seat are jointly enclosed to form the funnel-shaped structure; when the front end of the water shoveling plate is inclined upwards, the front end of the water shoveling plate is closed with the bottom wall of the mounting seat, the rear end of the water shoveling plate is inclined downwards and separated from the mounting seat, and at the moment, water in the front half section of the arched flow channel can flow back downwards and be discharged from a gap between the rear end of the water shoveling plate and the mounting seat; still include water collecting actuating mechanism, water collecting actuating mechanism includes connecting rod, slide bar, pivot, peach-shaped wheel and motor, the slide bar is along vertical direction and mount pad sliding connection, and peach-shaped wheel and pivot rigid coupling, pivot along hull width direction level rotation setting, and the pivot is connected with motor drive, the one end and the slide bar pin joint of connecting rod, the other end with the curb plate pin joint, the slide bar upper end is equipped with the spacer pin, and the spacer pin is kept off with peach-shaped wheel upper end face and is connected, is equipped with the third elastic element between slide bar and the mount pad, and the third elastic element is assembled to its elasticity and can drive the slide bar and descend.
5. The sampling test device for water quality testing according to claim 4, wherein: the arch flow channel, the sample pool, the water collecting devices and the water collecting driving mechanisms are all provided with a plurality of groups along the width direction of the ship body, and the peach-shaped wheels of the water collecting driving mechanisms of the water collecting devices are fixedly connected with the same rotating shaft.
6. Water sampling detecting system based on unmanned ship, its characterized in that: a sampling test device for water quality testing comprising the device of any one of claims 1 to 5.
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| CN114112541B (en) * | 2021-12-25 | 2022-05-10 | 盐城工学院 | Automatic water quality sampling device for unmanned ship |
| WO2023215824A1 (en) * | 2022-05-06 | 2023-11-09 | Baylor University | Autonomous biomonitoring system in lotic ecosystems |
| CN117236654A (en) * | 2023-11-13 | 2023-12-15 | 北京恒润安科技有限公司 | Urban and rural water supply integrated digital water control system |
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