Device and method for monitoring content of pollutants in oilfield wastewater by using hyperspectral data

Abstract

The invention discloses a device and a method for monitoring the content of pollutants in oilfield wastewater by using hyperspectral data, and relates to the technical field of water sampling and water quality pollutant monitoring. Comprising a sampling shell, a rotating plate is rotatably connected in the sampling shell, the upper side of the rotating plate is fixedly connected with a circumferentially distributed negative pressure sampling barrel, the outer side of the sampling shell is provided with a sliding cylinder, the outer side of the sliding cylinder is slidably connected with a buoy, and the lower side of the buoy is rotatably connected with a circumferentially distributed circular gear. Circumferentially distributed racks are fixedly connected to the outer side of the sliding cylinder, the circumferentially distributed racks are engaged with the adjacent circular gears, and driving rods are fixedly connected to the circular gears. The five racks move downwards and drive the adjacent driving rods to rotate, impurities on the water surface are shifted to the side, and therefore the situation that in the process of lowering the sampling shell, the impurities on the water surface are attached to the outer side of the sampling shell, and the sampling result is affected is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of water sampling and water quality pollutant monitoring, and in particular to a device and method for monitoring the pollutant content of oilfield wastewater using hyperspectral data. Background Art

[0002] During the development and production of oil and gas fields, a large amount of water is inevitably produced in the oil wells along with the production of oil and natural gas. This water comes from mud filtrate during drilling, fracturing fluid during oil layer transformation, water specially injected to increase formation energy and increase oil and gas production, and original formation water in the oil and gas reservoir. The produced water contains extremely complex components and pollutants, and can only be discharged after treatment. Based on the indicators after treatment, it is decided whether to discharge naturally or to re-treat and reuse.

[0003] Before sewage treatment, it is necessary to test the sewage and detect the content of pollutants in the sewage through laboratory analysis and testing. Accurately understanding the concentration of these pollutants is helpful to take effective treatment measures, adjust the dosage of the agent or change the treatment process according to the test results, and protect the surrounding ecological environment. However, the existing laboratory analysis requires sewage sampling. Most of the existing sampling devices use sampling buckets or sampling tubes, which cannot sample sewage at different depths, resulting in a single sampling method. In addition, floating impurities on the surface of the sewage (leaves, foam, floating oil, etc.) may also enter the sampling bucket, causing the sewage experimental detection value to deviate. The numerical deviation affects the subsequent sewage treatment process. Summary of the invention

[0004] In order to overcome the shortcomings of existing oilfield wastewater sampling devices, the present invention provides a device and method for monitoring the pollutant content of oilfield wastewater using hyperspectral data.

[0005] The technical solution is as follows: A device for monitoring the pollutant content of oilfield wastewater using hyperspectral data, comprising a sampling shell, a rotating plate rotatably connected in the sampling shell, a circumferentially distributed negative pressure sampling barrel fixedly connected to the upper side of the rotating plate, the sampling shell and the negative pressure sampling barrel are both provided with sampling ports and are interconnected, a fixing frame is fixedly connected to the upper side of the sampling shell, the fixing frame is connected to a connecting rope, a first motor with an output shaft fixedly connected to the rotating plate is installed in the sampling shell, the output shaft of the first motor is rotatably connected to the sampling shell, the A sliding cylinder is provided on the outer side of the sampling shell, the sliding cylinder is in contact with the fixed frame, the sliding cylinder is slidably connected to a float, a hyperspectral water quality detection lens is installed on the top of the float, the lower side of the float is rotatably connected to a circumferentially distributed circular gear, a plurality of racks meshing with adjacent circular gears are fixedly connected to the outer side of the sliding cylinder, the circumferentially distributed racks are respectively meshed with adjacent circular gears, the circular gears are fixedly connected to driving rods, the driving rods are all installed with arc plates, and the arc plates on adjacent driving rods are tightly fitted.

[0006] Furthermore, a circumferentially distributed fixed shell is fixedly connected to the outer side of the float, a piston rod is slidably connected in the fixed shell, and the fixed shell is communicated with the adjacent piston rod, the piston rod is fixed to the adjacent rack, the piston rod is slidably connected to the float, exhaust holes are provided on the sides of the circumferentially distributed driving rods away from each other, and a connecting pipe is fixedly connected and communicated with the exhaust hole of the adjacent driving rod on the side of the fixed shell away from the adjacent piston rod, a first gas one-way valve is installed in the piston rod, and a second gas one-way valve is installed at the connection between the fixed shell and the adjacent connecting pipe.

[0007] Furthermore, it also includes symmetrically distributed connecting blocks, which are all fixedly connected to the outer side of the sampling shell, and are respectively located on both sides of the sampling port of the sampling shell. The side of the connecting block away from the sampling shell is slidably connected with a water pusher plate, and the symmetrically distributed connecting blocks are commonly slidably connected with a sliding frame, and the symmetrically distributed water pushers are all slidably connected to the sliding frame. An electric push rod is fixedly connected to the outer side of the sampling shell, and the telescopic end of the electric push rod is fixedly connected to the sliding frame. Limiting plates are fixedly connected to both sides of the connecting block, and a first sealing plate is slidably connected inside the water pusher plate, and the first sealing plate is slidably connected to the adjacent limiting plate.

[0008] Furthermore, the water pushing plate and the first sealing plate are both provided with evenly distributed water through holes, and the water through holes of the water pushing plate are communicated with the water through holes of the adjacent first sealing plate.

[0009] Furthermore, a second motor is fixedly connected to the lower side of the fixing frame, and a propeller is fixedly connected to the output shaft of the second motor.

[0010] Furthermore, an air pump is included, which is fixed in the sampling shell. The sampling port of the sampling shell is rotatably connected to a screen. The outlet of the air pump is located on the side of the screen close to the sampling shell. The sampling shell is fixed with a cleaning plate, and the cleaning plate is rotatably connected to the screen.

[0011] Furthermore, the screen is configured in a spiral impeller shape for rotating the screen.

[0012] Furthermore, the sampling port of the sampling shell is slidably connected to a second sealing plate, a liquid hole is provided in the middle of the second sealing plate, and the diameter of the liquid hole is consistent with the diameter of the sampling port of the sampling shell, a first elastic member is connected between the second sealing plate and the sampling shell, the negative pressure sampling barrel is slidably connected to a sealing member, the sealing member is slidably sealed with the sampling port of the adjacent negative pressure sampling barrel, a second elastic member is connected between the sealing member and the adjacent negative pressure sampling barrel, the air outlet pipe of the air pump is connected to a ventilation pipe, and the end of the ventilation pipe away from the air pump is located on the upper side of the second sealing plate.

[0013] Furthermore, it also includes a fixing rod, which is fixed to the lower side of the sampling shell, and the fixing rod is slidably connected to an extrusion block, the lower side of the sampling shell is fixed to an electronic sensor that is extruded by the extrusion block, the fixing frame is fixed to an air bag that is connected to the air pump, the lower side of the sampling shell is slidably connected to a circumferentially distributed clamping block, a third elastic member is connected between the clamping block and the sampling shell, and the circumferentially distributed clamping blocks are all extruded by the extrusion block.

[0014] Furthermore, a method for using a device for monitoring the content of pollutants in oilfield wastewater using hyperspectral data is provided. The above device for monitoring the content of pollutants in oilfield wastewater using hyperspectral data is used in the following steps: Step S1: Start the lifting device to make the lower end of the driving rod break the impurities on the water surface and make the lower side of the buoy contact the water surface, continue to lower the connecting rope, make the driving rod rotate its lower end away from each other, and push the impurities on the water surface to the side; Step S2: opening the negative pressure sampling barrel connected to the sampling port of the sampling shell, and then the negative pressure sampling barrel takes samples, and adjusting the positions of the three negative pressure sampling barrels by the first motor until all the three negative pressure sampling barrels have finished sampling; Step S3: During the process of S2, the hyperspectral water quality detection lens is started. The hyperspectral water quality detection lens uses the spectral information of continuous narrow bands to analyze the electromagnetic radiation reflected or absorbed by the water body through hyperspectral imaging technology to detect the change of water quality. In the process of sampling, the water pusher moves backward to push the water outside it outward, and the second motor is started. The propeller of the second motor rotates in the opposite direction to make the sampling shell move up and down reciprocatingly. Step S4: restart the lifting device to move the sliding cylinder and the parts on the floating cylinder upward and reset, take out the sewage in the negative pressure sampling barrel, and complete the sampling of the sewage.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the present invention moves five racks downward and drives adjacent driving rods to rotate, thereby pushing impurities on the water surface to the side, thereby preventing impurities on the water surface from adhering to the outside of the sampling shell during the lowering of the sampling shell, thereby preventing the sampling results from being affected.

[0016] The invention discharges air through the exhaust hole of the driving rod, blows the impurities on the outer side of the driving rod to move outward, and reduces the amount of impurities attached when the driving rod is reset.

[0017] The invention drives the sliding frame to move up and down reciprocatingly by the telescopic end of the electric push rod, thereby driving the two water pushing plates to move back and forth in the direction of first facing each other and then facing each other, so as to drive away the solid suspended matter in the water outside the sampling port on the sampling shell, and prevent the water outside the sampling port on the sampling shell from containing a large amount of solid suspended matter, which may cause the sampling port of the sampling shell to be blocked.

[0018] In the process of the two water pushing plates moving backwards, the water holes on the water pushing plates are connected with the water holes on the adjacent first sealing plate, so as to filter the suspended solids in the water and prevent the suspended solids from following the water to move to the outside of the sampling port of the sampling shell when the water outside makes up for the water pushed away by the two water pushing plates, thereby preventing the sampling port of the sampling shell from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixed shell, the water-throwing plate and the propeller of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the circular gear, rack and driving rod of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the fixed shell, the piston rod and the connecting pipe of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the water push plate, the sliding frame and the electric push rod of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the sliding frame, the electric push rod and the limit plate of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the connecting block, the water pusher plate and the first sealing plate of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the second motor, the air pump and the fixing rod of the present invention; Fig. 9It is a schematic diagram of the three-dimensional structure of the fixing frame, the second motor and the propeller of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the second sealing plate, the first elastic member and the sealing member of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the fixing rod, the extrusion block and the electronic sensor of the present invention.

[0021] Figure numbers: 11-sampling shell, 12-rotating plate, 13-negative pressure sampling barrel, 14-fixed frame, 15-connecting rope, 16-first motor, 19-sliding cylinder, 110-floating cylinder, 111-circular gear, 112-rack, 113-driving rod, 21-fixed shell, 22-piston rod, 23-connecting pipe, 24-first gas one-way valve, 25-second gas one-way valve, 31-connecting block, 32-push plate, 33- Sliding frame, 34-electric push rod, 35-limiting plate, 36-first sealing plate, 41-second motor, 42-propeller, 51-air pump, 52-screen, 53-cleaning plate, 61-second sealing plate, 62-first elastic member, 63-sealing member, 64-second elastic member, 65-ventilation pipe, 71-fixing rod, 72-extrusion block, 73-electronic sensor, 74-airbag, 75-clamping block, 76-third elastic member. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Example 1: A device for monitoring the pollutant content of oilfield wastewater using hyperspectral data, please refer to Figure 1-Figure 4As shown, it includes a sampling shell 11, a rotating plate 12 is rotatably connected to the middle and lower part of the sampling shell 11, three negative pressure sampling barrels 13 distributed circumferentially are fixedly connected to the upper side of the rotating plate 12, the sampling shell 11 and the negative pressure sampling barrel 13 are both provided with sampling ports, the sampling ports of the three negative pressure sampling barrels 13 distributed circumferentially are all communicated with the sampling port of the sampling shell 11, a fixing frame 14 is fixedly connected to the upper side of the sampling shell 11, the fixing frame 14 is connected to a connecting rope 15, the connecting rope 15 is connected to an external lifting device, a first motor 16 is installed in the sampling shell 11, the first motor 16 is located at the lower side of the rotating plate 12, the output shaft of the first motor 16 is fixedly connected to the rotating plate 12, and the output shaft of the first motor 16 is connected to the rotating plate 12. The sampling shell 11 is dynamically connected, and a sliding cylinder 19 is arranged on the outer side of the sampling shell 11. When the sampling shell 11 is lowered, the upper side surface of the fixing frame 14 contacts the upper side surface inside the sliding cylinder 19. The outer side of the sliding cylinder 19 is slidably connected with a float 110. A hyperspectral water quality detection lens is installed on the top of the float 110. The lower side of the float 110 is rotatably connected with five circumferentially distributed circular gears 111. The outer side of the sliding cylinder 19 is fixedly connected with five circumferentially distributed racks 112. The five circumferentially distributed racks 112 are respectively meshed with adjacent circular gears 111. The circular gear 111 is fixedly connected with a driving rod 113. The driving rod 113 is installed with an arc plate. The arc plates on adjacent driving rods 113 fit tightly to form a truncated cone shape.

[0024] Please refer to Figure 2-Figure 4 As shown, five circumferentially distributed fixed shells 21 are fixedly connected to the outer side of the float 110, a piston rod 22 is slidably connected inside the fixed shell 21, and the fixed shell 21 is communicated with the adjacent piston rod 22, the piston rod 22 is fixedly connected to the adjacent rack 112, the piston rod 22 is slidably connected to the float 110, exhaust holes are provided on the sides away from each other of the five circumferentially distributed driving rods 113, and a connecting pipe 23 is fixedly connected and communicated between the upper side of the fixed shell 21 and the exhaust holes of the adjacent driving rod 113, a first gas one-way valve 24 is installed in the piston rod 22, and the first gas one-way valve 24 is only used for gas to enter the adjacent piston rod 22, and a second gas one-way valve 25 is installed at the connection between the fixed shell 21 and the adjacent connecting pipe 23, and the second gas one-way valve 25 is only used for gas to enter the adjacent connecting pipe 23.

[0025] When it is necessary to use the device for sampling, the staff first connects the connecting rope 15 to the lifting device, and then releases the connecting rope 15 through the lifting device, thereby lowering the fixing frame 14, and the fixing frame 14 drives the parts thereon to move downward synchronously. At this time, under the action of gravity, the upper side of the fixing frame 14 contacts the upper side inside the sliding cylinder 19, and the upper side of the sliding cylinder 19 contacts the upper side inside the buoy 110. The five driving rods 113 and the arc plates thereon are inserted into the sewage, and the lower ends of the five driving rods 113 break the impurities on the water surface until the lower side of the buoy 110 contacts the water surface. At this time, under the action of buoyancy, the buoy 110 no longer moves downward. At this time, as the sliding cylinder 19 moves downward, the five racks 112 move downward and drive the adjacent circular The circular gear 111 rotates, and the five circular gears 111 respectively drive the adjacent driving rods 113 to rotate. The five driving rods 113 rotate their lower ends away from each other, and the driving rods 113 drive the arc plates on them to move synchronously, so as to push the impurities on the water surface to the side, thereby preventing the impurities on the water surface from adhering to the outside of the sampling shell 11 during the lowering of the sampling bucket, thereby affecting the sampling results. The staff starts the hyperspectral water quality detection lens to detect the water quality of the sewage. In the water quality monitoring process, the hyperspectral water quality detection lens detects multi-band hyperspectral data. The data is highly consistent with the actual test results (more than 90% compliance rate) through a computer adaptive deep learning model and multiple iterations of fitting, thereby realizing automation and intelligence from sampling to water quality monitoring.

[0026] During the downward movement of the sliding cylinder 19, when the lower side of the sliding cylinder 19 contacts the water surface, under the action of buoyancy, the sliding cylinder 19 no longer moves downward. At this time, the five driving rods 113 and the arc-shaped plates thereon push the impurities on the lower side of the buoy 110 to the outside, so that the sampling shell 11 can move downward normally to the sampling point, and then the staff shuts down the lifting device and opens the negative pressure sampling barrel 13 that is connected to the sampling port of the sampling shell 11, and then the negative pressure sampling barrel 13 is sampled. After the sampling of one negative pressure sampling barrel 13 is completed, the staff starts the first motor 16, and the output shaft of the first motor 16 drives the three negative pressure sampling barrels 13 to rotate through the rotating plate 12 until the second negative pressure sampling barrel 13 is connected to the sampling port of the sampling shell 11, and then turns off the first motor 16, and then repeats the above steps until all three negative pressure sampling barrels 13 are sampled.

[0027] After all three negative pressure sampling barrels 13 have completed sampling, the staff starts the lifting device and closes the hyperspectral water quality detection lens. The lifting device reels in the connecting rope 15, thereby retracting the fixed frame 14, and the fixed frame 14 drives the parts thereon to move upward synchronously until the upper side surface of the fixed frame 14 contacts the upper side surface inside the sliding cylinder 19, and the fixed frame 14 drives the sliding cylinder 19 to move upward, and the sliding cylinder 19 drives the five racks 112 to move upward. The five racks 112 move upward to drive the adjacent circular gears 111 to rotate, thereby driving the five driving rods 113 to reset, until the upper side surface of the sliding cylinder 19 contacts the upper side surface inside the buoy 110, and the sliding cylinder 19 drives the buoy 110 to move upward and reset.

[0028] During the downward movement of the rack 112, the rack 112 drives the adjacent piston rod 22 to move downward. After the piston rod 22 moves downward, the volume of the cavity in the fixed shell 21 increases, thereby generating negative pressure to absorb the outside air. The outside air enters the adjacent fixed shell 21 through the piston rod 22 and the first gas one-way valve 24. During the upward movement of the rack 112, the rack 112 drives the adjacent piston rod 22 to move upward, squeezing the air in the cavity in the adjacent fixed shell 21. The air in the cavity in the fixed shell 21 enters the adjacent driving rod 113 through the second gas one-way valve 25 and the connecting pipe 23, and is discharged from the exhaust hole of the driving rod 113, blowing the impurities on the outside of the driving rod 113 to continue to move outward, thereby reducing the amount of impurities attached to the driving rod 113 when the driving rod 113 is reset.

[0029] Example 2: Based on Example 1, please refer to Figure 2 , Figure 5-Figure 7As shown, it also includes two connecting blocks 31 symmetrically distributed front and back, the two connecting blocks 31 symmetrically distributed front and back are both fixed to the right side outside the sampling shell 11, the two connecting blocks 31 are respectively located on both sides of the sampling port on the sampling shell 11, the connecting blocks 31 are provided with inclined slides, and the lower ends of the inclined slides on the two connecting blocks 31 are close to each other, but the upper ends are far away from each other, and the right side of the connecting block 31 is slidably connected with a water pushing plate 32, the water pushing plate 32 is located in the inclined slide on the adjacent connecting block 31 and slides, the two water pushing plates 32 are distributed in an eight-shaped shape, and the distance between the left sides of the two water pushing plates 32 is smaller than the distance between the right sides, and are used to push the algae and plankton near the sampling port of the sampling shell 11, the water pushing plates 32 are provided with evenly distributed water holes, the two connecting blocks 31 are slidably connected with a sliding frame 33, and the upper ends of the front and rear sides of the sliding frame 33 are provided with horizontal The two water pushing plates 32 are respectively slidably connected with the adjacent horizontal sliding grooves on the sliding frame 33. An electric push rod 34 is fixedly connected to the right side outside the sampling shell 11. The telescopic end of the electric push rod 34 is fixedly connected to the sliding frame 33. The upper and lower sides of the connecting block 31 are fixedly connected with the limiting plates 35. The limiting plate 35 is provided with a parallelogram sliding groove. The first sealing plate 36 is slidably connected inside the water pushing plate 32. The first sealing plate 36 is provided with evenly distributed water holes. The first sealing plate 36 slides in the parallelogram sliding groove on the adjacent limiting plate 35. When the first sealing plate 36 slides in the sliding groove on the right side of the parallelogram sliding groove, the water holes of the water pushing plate 32 are connected with the water holes of the adjacent first sealing plate 36. When the first sealing plate 36 slides in the sliding groove on the left side of the parallelogram sliding groove, the water holes of the water pushing plate 32 are not connected with the water holes of the adjacent first sealing plate 36.

[0030] Please refer to Figure 8 and Fig. 9 As shown, a second motor 41 is fixedly connected to the lower side of the fixing frame 14 , and a propeller 42 is fixedly connected to the output shaft of the second motor 41 .

[0031] During the sampling process of the negative pressure sampling barrel 13, the staff starts the electric push rod 34, and the telescopic end of the electric push rod 34 drives the sliding frame 33 to move up and down. The sliding frame 33 drives the adjacent water pushing plates 32 to move through the two horizontal slide rails at its upper end. The two water pushing plates 32 move back and forth in the direction of first back to back and then towards each other. The two water pushing plates 32 move back to back and push the water on the outside thereof outward to drive away the solid suspended matter in the water around the outside of the sampling port of the sampling shell 11. In the process of the two water pushing plates 32 moving toward each other, the two water pushing plates 32 push the water between them outward, thereby driving away the solid suspended matter in the water outside the sampling port of the sampling shell 11, and preventing the water outside the sampling port of the sampling shell 11 from containing a large amount of solid suspended matter, which causes the sampling port of the sampling shell 11 to be blocked.

[0032] The first sealing plate 36 is connected to the first sealing plate 36 for reciprocating movement along the parallelogram groove on the adjacent limiting plate 35. The water holes on the water pushing plates 32 are connected to the water holes on the adjacent first sealing plates 36 during the movement of the two water pushing plates 32 in the opposite directions. The solid suspended matter in the water is filtered to prevent the solid suspended matter from following the water to move to the outside of the sampling port of the sampling shell 11 when the water outside makes up for the water pushed away by the two water pushing plates 32, causing the sampling port of the sampling shell 11 to be blocked. During the movement of the two water pushing plates 32 toward each other, the water holes on the water pushing plates 32 are no longer connected to the water holes on the adjacent first sealing plates 36. The solid suspended matter in the water between the two water pushing plates 32 is prevented from entering the water holes on the water pushing plates 32 and the water holes on the adjacent first sealing plates 36 under the suction generated when the water moves through the water holes during the process of the two water pushing plates 32 pushing the water therebetween outward.

[0033] During the sampling process of the negative pressure sampling barrel 13, the staff starts the second motor 41. At this time, the output shaft of the second motor 41 drives the propeller 42 to rotate, and the rotation of the propeller 42 drives the sampling shell 11 to move upward. After the sampling shell 11 moves upward for a distance, the output shaft of the second motor 41 drives the propeller 42 to rotate in the opposite direction, and the reverse rotation of the propeller 42 drives the sampling shell 11 to move downward. In this way, during the sampling process of the negative pressure sampling barrel 13, the sampling shell 11 moves back and forth up and down to prevent suspended solids in the water from blocking the sampling port of the sampling shell 11.

[0034] Example 3: Based on Example 2, please refer to Figure 8 and Fig.10 As shown, an air pump 51 is also included. The air pump 51 is fixedly connected to the upper side of the sampling shell 11. The sampling port of the sampling shell 11 is rotatably connected to a screen 52. The screen 52 is configured to be in the shape of a spiral impeller and is used to rotate the screen 52 when the water flow impacts the screen 52. The outlet of the air pump 51 is located on the upper left side of the screen 52. The sampling shell 11 is fixedly connected to a cleaning plate 53 rotatably connected to the screen 52. The cleaning plate 53 is used to clean the screen 52.

[0035] Please refer to Fig.10As shown, the sampling port of the sampling shell 11 is slidably connected to a second sealing plate 61, a liquid hole is provided in the middle of the second sealing plate 61, and the diameter of the liquid hole is consistent with the diameter of the sampling port of the sampling shell 11, a first elastic member 62 is connected between the second sealing plate 61 and the sampling shell 11, the first elastic member 62 is a spring, the negative pressure sampling barrel 13 is slidably connected to a sealing member 63, the sealing member 63 is slidably sealed with the sampling port of the adjacent negative pressure sampling barrel 13, a second elastic member 64 is connected between the sealing member 63 and the adjacent negative pressure sampling barrel 13, the second elastic member 64 is a spring, the air outlet pipe of the air pump 51 is connected to a ventilation pipe 65, and the left end of the ventilation pipe 65 is located on the upper side of the second sealing plate 61.

[0036] During the sampling process of the negative pressure sampling barrel 13, the staff starts the air pump 51, and the air pump 51 works to discharge the air stored therein, and the discharged air is discharged through the air outlet pipe and the vent pipe 65 of the air pump 51. The air discharged through the vent pipe 65 impacts the second sealing plate 61, causing the second sealing plate 61 to move downward and compress the adjacent first elastic member 62 until the liquid hole on the second sealing plate 61 is connected with the sampling port of the sampling shell 11, and the first elastic member 62 is compressed to the limit position, and the second sealing plate 61 no longer moves downward. The exhaust air no longer enters the vent pipe 65 at this time, and then the external water flows into the sampling port of the negative pressure sampling barrel 13 through the sampling port of the sampling shell 11, and impacts the adjacent sealing member 63, so that the sealing member 63 moves toward the center of the adjacent negative pressure sampling barrel 13 and compresses the adjacent second elastic member 64. After the sealing member 63 moves, the sealing of the adjacent negative pressure sampling barrel 13 is released, and then the external water flows through the sampling port of the sampling shell 11 and the sampling port of the negative pressure sampling barrel 13, and finally enters the negative pressure sampling barrel 13.

[0037] When the external water flows into the sampling port of the sampling shell 11, the screen 52 filters the impurities in the external water flow. At the same time, as the external water flows in, the water flow impacts the screen 52, causing the screen 52 to rotate. At this time, the cleaning plate 53 is used to scrape off the impurities on the outside of the screen 52 to prevent the impurities in the water flow from clogging the screen 52 and affecting the sampling.

[0038] During the rotation of the screen 52, the screen 52 breaks the air discharged from the air outlet pipe of the air pump 51 into bubbles, and uses the bubbles to drive the impurities scraped by the cleaning plate 53 to move upward, preventing the impurities scraped by the cleaning plate 53 from re-attaching to the outside of the screen 52 under the influence of negative pressure suction, thereby affecting sampling.

[0039] Example 4: Based on Example 3, please refer to Figure 8 and Fig.11As shown, it also includes a fixing rod 71, which is fixedly connected to the lower side of the sampling shell 11. The fixing rod 71 is slidably connected with an extrusion block 72. The lower side of the sampling shell 11 is fixedly connected with an electronic sensor 73. The fixing frame 14 is fixedly connected with an air bag 74 connected to the air pump 51. When the extrusion block 72 squeezes the electronic sensor 73, the electronic sensor 73 starts the air pump 51 to pump air into the air bag 74. The lower side of the sampling shell 11 is slidably connected with three circumferentially distributed clamping blocks 75. A third elastic member 76 is connected between the three clamping blocks 75 and the sampling shell 11. The third elastic member 76 is a spring. When the three third elastic members 76 are in a normal relaxation state, the three circumferentially distributed clamping blocks 75 clamp the extrusion block 72 together, thereby limiting the extrusion block 72.

[0040] During the sampling process, if the connecting rope 15 breaks, the fixing frame 14 drives the parts thereon to move downward synchronously until the extrusion block 72 contacts the bottom of the pool, and the extrusion block 72 stops moving. At this time, as the sampling shell 11 moves downward, the electronic sensor 73 moves downward synchronously until the electronic sensor 73 contacts the extrusion block 72. The electronic sensor 73 sends a signal to the air pump 51, and the air pump 51 pumps air into the airbag 74. The airbag 74 expands and deforms and drives the fixing frame 14 to move upward and reset under the action of the buoyancy of the external water flow, thereby preventing the sampling device from being lost due to the breakage of the connecting rope 15.

[0041] When the device is not in use, the staff limits the extrusion block 72 by means of the three clamping blocks 75 and the third elastic member 76 to prevent the extrusion block 72 from moving. When sampling is required, the staff manually moves the clamping block 75 to release the three clamping blocks 75 from limiting the extrusion block 72.

[0042] Example 5: Based on Example 4, a method for using a device for monitoring the content of pollutants in oilfield wastewater using hyperspectral data is provided. The above device for monitoring the content of pollutants in oilfield wastewater using hyperspectral data is used in the following steps: Step S1: Start the lifting device to make the lower end of the driving rod 113 break the impurities on the water surface, and make the lower side of the buoy 110 contact the water surface, and continue to lower the connecting rope 15 to make the driving rod 113 rotate its lower end away from each other, so as to push the impurities on the water surface to the side; Step S2: opening the negative pressure sampling barrel 13 connected to the sampling port of the sampling shell 11, and then the negative pressure sampling barrel 13 performs sampling, and adjusting the positions of the three negative pressure sampling barrels 13 by the first motor 16 until all the three negative pressure sampling barrels 13 have completed sampling; Step S3: During the process of S2, the hyperspectral water quality detection lens is started. The hyperspectral water quality detection lens uses the spectral information of continuous narrow bands to analyze the electromagnetic radiation reflected or absorbed by the water body through hyperspectral imaging technology to detect the change of water quality. In the process of sampling, the water pusher plate 32 moves backward to push the water outside it outward, and the second motor 41 is started. The propeller 42 of the second motor 41 rotates in the opposite direction to make the sampling shell 11 move back and forth up and down; Step S4: restart the lifting device to move the sliding cylinder 19 and the parts on the floating cylinder 110 upward and reset, take out the sewage in the negative pressure sampling barrel 13, and complete the sampling of sewage.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for monitoring the pollutant content of oilfield wastewater using hyperspectral data, comprising a sampling shell (11), a rotating plate (12) rotatably connected inside the sampling shell (11), a circumferentially distributed negative pressure sampling barrel (13) fixedly connected to the upper side of the rotating plate (12), the sampling shell (11) and the negative pressure sampling barrel (13) are both provided with sampling ports and are interconnected, a fixing frame (14) fixedly connected to the upper side of the sampling shell (11), the fixing frame (14) is connected to a connecting rope (15), a first motor (16) whose output shaft is fixedly connected to the rotating plate (12) is installed inside the sampling shell (11), the output shaft of the first motor (16) is rotatably connected to the sampling shell (11), and the characteristic is that: The invention also comprises a sliding cylinder (19), wherein the sliding cylinder (19) contacts the fixing frame (14), the outer side of the sliding cylinder (19) is slidably connected to a float (110), the top of the float (110) is provided with a high-spectral water quality detection lens, the lower side of the float (110) is rotatably connected to a circumferentially distributed circular gear (111), the outer side of the sliding cylinder (19) is fixedly connected to a plurality of racks (112) meshing with adjacent circular gears (111), the circumferentially distributed racks (112) respectively meshing with adjacent circular gears (111), the circular gears (111) are fixedly connected to driving rods (113), the driving rods (113) are each provided with an arc plate, and the arc plates on adjacent driving rods (113) are tightly fitted.

2. The device for monitoring the pollutant content of oilfield wastewater using hyperspectral data according to claim 1, characterized in that: A circumferentially distributed fixed shell (21) is fixedly connected to the outer side of the buoy (110), a piston rod (22) is slidably connected inside the fixed shell (21), and the fixed shell (21) is communicated with the adjacent piston rod (22), the piston rod (22) is fixedly connected to the adjacent rack (112), the piston rod (22) is slidably connected to the buoy (110), exhaust holes are provided on the sides of the circumferentially distributed driving rods (113) away from each other, and a connecting pipe (23) is fixedly connected and communicated between the side of the fixed shell (21) away from the adjacent piston rod (22) and the exhaust hole of the adjacent driving rod (113), a first gas one-way valve (24) is installed in the piston rod (22), and a second gas one-way valve (25) is installed at the connection between the fixed shell (21) and the adjacent connecting pipe (23).

3. The device for monitoring the pollutant content of oilfield wastewater using hyperspectral data according to claim 2, characterized in that: The invention also comprises symmetrically distributed connection blocks (31), the symmetrically distributed connection blocks (31) are all fixedly connected to the outer side of the sampling shell (11), the symmetrically distributed connection blocks (31) are respectively located on both sides of the sampling port of the sampling shell (11), a water push plate (32) is slidably connected to the side of the connection block (31) away from the sampling shell (11), the symmetrically distributed connection blocks (31) are slidably connected to a sliding frame (33), the symmetrically distributed water push plates (32) are slidably connected to the sliding frame (33), an electric push rod (34) is fixedly connected to the outer side of the sampling shell (11), the telescopic end of the electric push rod (34) is fixedly connected to the sliding frame (33), both sides of the connection block (31) are fixedly connected to the limit plate (35), the water push plate (32) is slidably connected to a first sealing plate (36), and the first sealing plate (36) is slidably connected to the adjacent limit plate (35).

4. The device for monitoring the pollutant content of oilfield wastewater using hyperspectral data according to claim 3, characterized in that: The water pushing plate (32) and the first sealing plate (36) are both provided with evenly distributed water through holes, and the water through holes of the water pushing plate (32) are in communication with the water through holes of the adjacent first sealing plate (36).

5. The device for monitoring the pollutant content of oilfield wastewater using hyperspectral data according to claim 4, characterized in that: A second motor (41) is fixedly connected to the lower side of the fixing frame (14), and a propeller (42) is fixedly connected to the output shaft of the second motor (41).

6. The device for monitoring the pollutant content of oilfield wastewater using hyperspectral data according to claim 5, characterized in that: The invention also comprises an air pump (51), the air pump (51) being fixedly connected to the sampling shell (11), the sampling port of the sampling shell (11) being rotatably connected to a screen (52), the outlet of the air pump (51) being located on a side of the screen (52) close to the sampling shell (11), the sampling shell (11) being fixedly connected to a cleaning plate (53), the cleaning plate (53) being rotatably connected to the screen (52).

7. The device for monitoring the pollutant content of oilfield wastewater using hyperspectral data according to claim 6, characterized in that: The screen (52) is configured in the shape of a spiral impeller, and is used to rotate the screen (52).

8. The device for monitoring the pollutant content of oilfield wastewater using hyperspectral data according to claim 7, characterized in that: The sampling port of the sampling shell (11) is slidably connected to a second sealing plate (61), a liquid through hole is provided in the middle of the second sealing plate (61), and the diameter of the liquid through hole is consistent with the diameter of the sampling port of the sampling shell (11), a first elastic member (62) is connected between the second sealing plate (61) and the sampling shell (11), the negative pressure sampling barrel (13) is slidably connected to a sealing member (63), the sealing member (63) and the sampling port of the adjacent negative pressure sampling barrel (13) are slidably sealed, a second elastic member (64) is connected between the sealing member (63) and the adjacent negative pressure sampling barrel (13), the air outlet pipe of the air pump (51) is connected to a ventilation pipe (65), and one end of the ventilation pipe (65) away from the air pump (51) is located on the upper side of the second sealing plate (61).

9. The device for monitoring the pollutant content of oilfield wastewater using hyperspectral data according to claim 8, characterized in that: The invention also comprises a fixing rod (71), wherein the fixing rod (71) is fixedly connected to the lower side of the sampling shell (11), the fixing rod (71) is slidably connected to an extrusion block (72), the lower side of the sampling shell (11) is fixedly connected to an electronic sensor (73) which is extruded by the extrusion block (72), the fixing frame (14) is fixedly connected to an air bag (74) which is connected to the air pump (51), the lower side of the sampling shell (11) is slidably connected to circumferentially distributed clamping blocks (75), a third elastic member (76) is connected between the clamping blocks (75) and the sampling shell (11), and the circumferentially distributed clamping blocks (75) are all extruded by the extrusion block (72).

10. A method for using a device for monitoring the pollutant content of oilfield wastewater using hyperspectral data, characterized in that: According to the device for monitoring the pollutant content of oilfield wastewater using hyperspectral data as described in claim 9, the steps of use are as follows: Step S1: starting the lifting device, so that the lower end of the driving rod (113) breaks the impurities on the water surface, and the lower side of the buoy (110) contacts the water surface, and the connecting rope (15) is continuously lowered, so that the lower ends of the driving rod (113) are rotated away from each other, and the impurities on the water surface are pushed aside; Step S2: opening the negative pressure sampling barrel (13) connected to the sampling port of the sampling shell (11), and then the negative pressure sampling barrel (13) performs sampling, and adjusting the positions of the three negative pressure sampling barrels (13) by means of the first motor (16) until all the three negative pressure sampling barrels (13) have completed sampling; Step S3: During the process of S2, a hyperspectral water quality detection lens is started. The hyperspectral water quality detection lens uses the spectral information of continuous narrow bands to analyze the electromagnetic radiation reflected or absorbed by the water body through hyperspectral imaging technology to detect changes in water quality. During the sampling process, the water pusher plate (32) moves backward to push the water outside it outward, and the second motor (41) is started. The propeller (42) of the second motor (41) rotates in the opposite direction, so that the sampling shell (11) moves back and forth. Step S4: restarting the lifting device to move the sliding cylinder (19) and the parts on the floating cylinder (110) upward and reset, taking out the sewage in the negative pressure sampling barrel (13), and completing the sewage sampling.

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