A three-dimensional chloride ion monitoring device and monitoring method

Abstract

This invention provides a three-dimensional chloride ion monitoring device and method, including a pole and a crossbeam. A movable ring is fitted onto the pole, and an arc-shaped collecting plate is mounted on the movable ring. All the arc-shaped collecting plates together form a spherical structure with a spherical outer contour, and adjacent arc-shaped collecting plates are separated by a V-shaped space. The movable ring is connected to the end of a rope. The monitoring method includes the following steps: controlling the drive motor to run at a set time point, first causing the movable ring and arc-shaped collecting plates to fall down the pole under gravity and submerge below the liquid surface in the collection tank for a set time, and then controlling the movable ring and arc-shaped collecting plates to rise back to the target height. This invention is not only applicable to collecting chloride ions under any wind direction, but also can selectively collect chloride ions only in specific airflows. It also avoids the easy saturation of chloride ions on gauze without the need for a rainproof canopy. More importantly, it can achieve long-term online and rapid monitoring of chloride ions.

Description

Technical Field

[0001] This invention belongs to the field of atmospheric chloride ion monitoring technology, specifically relating to a three-dimensional chloride ion monitoring device and monitoring method. Background Technology

[0002] The existing literature CN109557019A discloses an atmospheric chloride ion monitoring device, which includes a canopy, a test gauze installed under the canopy, and an outer frame of the device fixed under the canopy via a connecting structure. The test gauze is pressed together by two layers of wire mesh, and the wire mesh containing the pressed test gauze is fixed to the outer frame of the device by the inner frame of the device. The gauze is folded in half and sandwiched between the two layers of wire mesh. The wire mesh serves to fix the gauze and prevent it from falling off. The wire mesh is sandwiched between the inner frame and the outer frame of the device. The inner frame is installed inside the outer frame of the device and fixed with screws. Although this scheme improves the robustness and reliability of the monitoring device to a certain extent, almost no chloride ions are collected when the wind direction is parallel to the gauze, and the problem of frame and gauze swaying still exists.

[0003] To collect chloride ions from the atmosphere in different directions, a method for collecting chloride ions in the atmospheric environment was previously developed. This method involves placing a collection gauze over a four-sided perforated columnar frame, marking reference points and collection directions on the frame or gauze, and then suspending the marked frame inside a canopy according to the collection direction. This allows for the collection of chloride ions in at least four horizontal directions without rain contact with the gauze. However, in practical applications in coastal areas, this method suffers from the problem of chloride ion saturation on the gauze, and requires a rain shield for operation.

[0004] More importantly, none of the aforementioned methods can achieve online and rapid monitoring of chloride ions. The gauze must be removed periodically for testing, and the gauze used cannot be reused, making the operation quite cumbersome. Summary of the Invention

[0005] In order to solve the technical problems mentioned in the background art, the present invention aims to provide a three-dimensional chloride ion monitoring device and monitoring method.

[0006] The present invention adopts the following technical solution.

[0007] A three-dimensional chloride ion monitoring device includes a column with a crossbeam at the top. A chloride ion collection unit is suspended from the cantilever end of the crossbeam. The chloride ion collection unit includes a pole with its upper end connected to the crossbeam and its lower end fixed to the ground. A movable ring is fitted onto the pole, and an arc-shaped collection plate is mounted on the movable ring. All the arc-shaped collection plates together form a spherical structure with a spherical outer contour, and adjacent arc-shaped collection plates are separated by a V-shaped space. The movable ring is connected to the end of a rope, which passes around guide wheels on the column and crossbeam and is then connected to a winding shaft. When the winding shaft rotates clockwise, the rope is wound up, causing the movable ring and the arc-shaped collection plates to move upward along the pole. When the winding shaft rotates counterclockwise, the movable ring and the arc-shaped collection plates fall downward along the pole under the action of gravity.

[0008] As a preferred embodiment, the arc-shaped acquisition plate includes an arc-shaped frame, on which cotton yarn or cotton mesh is provided, and the pores of the cotton yarn or cotton mesh are no greater than 0.5mm.

[0009] To facilitate the replacement or flexible assembly of some of the curved sensing plates, a slot is provided on the movable ring, with a baffle at the bottom of the slot. The vertical rod of the curved frame fits into the slot and is limited laterally and vertically. The upward limitation of the curved frame relies on the weight of the curved sensing plate itself. Using this design, the curved sensing plates on the leeward side can also be replaced with a material that cannot deposit chloride ions, thus enabling targeted collection of chloride ions from specific airflows and directions.

[0010] As a preferred embodiment, the slot is an arc-shaped slot, and the vertical rod of the arc-shaped frame has a circular cross-section.

[0011] As a preferred option, the included angle between adjacent arc-shaped acquisition plates is 30~45°.

[0012] To enable real-time and long-term continuous collection of chloride ions, a collection tank is installed below the upright. Inside the collection tank, there is an independent clear water pool. Water pipes with control valves are arranged along the upright and crossbeams. Pumps are connected to the water pipes. The lower end of the water pipes is connected to the clear water pool in the collection tank, and the upper end is located above the movable ring so that the liquid dripping from the nozzle at the upper end of the water pipes can fall onto the arc-shaped collection plate. The probe of the chloride ion sensor extends into the chloride-containing liquid in the collection tank.

[0013] To reduce the impact of rainwater on chloride ion collection without using a rain shelter, the diameter of the collection tank opening is 5-10 mm larger than the outer diameter of the spherical structure. More precisely, the clearance between the collection tank opening and the spherical structure is 5-10 mm.

[0014] A monitoring method using the aforementioned three-dimensional chloride ion monitoring device, wherein the drive motor, control valve, and pump of the winding shaft are respectively connected to a controller, and the controller's storage module stores a program that can run on the processing module. When the processing module executes the program, it performs the following steps: Step 1: Control the drive motor to move the movable ring and the arc-shaped acquisition plate along the pole to the target height, then turn off the drive motor; Step 2: Control the operation of the control valve and pump to spray the liquid in the clear water tank in the collection tank onto the arc-shaped collection plate; Step 3: Control the drive motor to run at the set time point. First, let the moving ring and the arc-shaped collecting plate fall down the upright under the action of gravity and sink below the surface of the chloride ion-containing liquid in the collection tank for a set time. Then, control the moving ring and the arc-shaped collecting plate to rise back to the target height. Step 4: Obtain the chloride ion concentration in the chloride-containing liquid in the collection tank; Step 5: After one collection cycle is completed, collect chloride ions in the atmosphere at the next target altitude.

[0015] Furthermore, during the rainy period, the drive motor is controlled to operate so that the maximum diameter part of the spherical structure is exactly located at the liquid collection tank opening. After the rain ends, the drive motor is controlled to operate so that the spherical structure rises back to the target height.

[0016] As a preferred option, the upright is made of stainless steel tubing with a diameter of no more than 30mm.

[0017] Beneficial effects: The solution of this invention is not only applicable to collecting chloride ions under any wind direction, but also allows for targeted collection of chloride ions from specific airflows and directions. It also avoids the problem of chloride ion saturation on the gauze without the need for a rainproof canopy. More importantly, it enables long-term, online, and rapid monitoring of chloride ions, and the gauze used is reusable, making it simpler and more convenient to use. Furthermore, the three-dimensional chloride ion monitoring device in this solution has good stability and can be used to collect chloride ion deposition data at different heights. The corresponding chloride ion collection height can be flexibly controlled at the centimeter level, which is beneficial for providing more accurate experimental data for the study of three-dimensional chloride ion deposition in the atmosphere. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the three-dimensional chloride ion monitoring device in Example 1; Figure 2 This is a schematic diagram of the three-dimensional chloride ion monitoring device in Example 1. Figure 3 for Figure 1 Enlarged view of part A in the middle; Figure 4This is a three-dimensional schematic diagram of the three-dimensional chloride ion monitoring device in Example 5; Figure 5 This is a schematic diagram of the three-dimensional chloride ion monitoring device in Example 5 (the arc-shaped collecting plate is located at the inlet of the liquid collection tank). Figure 6 This is a schematic diagram of the three-dimensional chloride ion monitoring device in Example 5 (the arc-shaped collecting plate is located inside the liquid collection tank). Figure 7 This is a schematic diagram of the arc-shaped acquisition plate and the movable ring of the three-dimensional chloride ion monitoring device in Example 5. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0020] Combination Figures 1 to 3 As shown, a three-dimensional chloride ion monitoring device includes a column 1, a crossbeam 2 at the top of the column 1, and a chloride ion collection unit suspended from the cantilever end of the crossbeam 2. The chloride ion collection unit includes a pole 30, the upper end of which is connected to the crossbeam 2, and the lower end of which is fixed to the ground. A movable ring 31 is fitted onto the pole 30, and an arc-shaped collection plate 32 is provided on the movable ring 31. All the arc-shaped collection plates 32 together form a sphere with a spherical outer contour. The structure has a V-shaped space between adjacent arc-shaped collecting plates 32. The movable ring 31 is connected to the end of the rope 33, which passes around the guide wheel 3 on the column 1 and the crossbeam 2 and is connected to the winding shaft. When the winding shaft rotates clockwise, the rope 33 is wound up, which in turn drives the movable ring 31 and the arc-shaped collecting plate 32 to move upward along the column 30. When the winding shaft rotates counterclockwise, the movable ring 31 and the arc-shaped collecting plate 32 fall down along the column 30 under the action of gravity.

[0021] In this embodiment, the arc-shaped acquisition plate 32 includes an arc-shaped frame 34, on which a cotton mesh 38 is provided. The pores (apertures) on the cotton mesh 38 are no larger than 2mm. A slot 35 is provided on the movable ring 31, and a baffle is provided at the lower end of the slot 35. The vertical rod of the arc-shaped frame 34 is fitted into the slot 35 and is limited laterally and vertically. The slot 35 is an arc-shaped slot (essentially a circular blind hole with a strip-shaped slit, in which the non-vertical part of the arc-shaped frame 34 can fit into the strip-shaped slit), and the cross-section of the vertical rod of the arc-shaped frame 34 is circular.

[0022] In this embodiment, the included angle between adjacent arc-shaped acquisition pieces 32 is 45°, and eight arc-shaped acquisition pieces 32 are arranged accordingly.

[0023] In this embodiment, a liquid collection tank 20 is provided below the upright 30, and a level gauge is installed inside the liquid collection tank 20. A short drain pipe with a valve 24 is provided at the bottom of the liquid collection tank 20. An independent clear water pool is provided inside the liquid collection tank 20, with only one inlet and one outlet. A water pipe 22 with a control valve 21 (the control valve 21 is located on the vertical section of the water pipe 22) is arranged along the upright 1 and the crossbeam 2. The non-vertical sections of the water pipe 22 are all inclined downward at 15°. A pump 23 is connected to the vertical section of the water pipe 22. The lower end of the water pipe 22 is connected to the clear water pool in the liquid collection tank 20, and the upper end is located above the movable ring 31, so that the liquid sprayed from the nozzle 36 at the upper end of the water pipe 22 can drip onto the arc-shaped collection plate 32. The probe of the chloride ion sensor extends into the chloride ion-containing liquid in the liquid collection tank 20. The fit gap between the opening of the liquid collection tank 20 and the spherical structure is 8 mm. In this invention, the use of a chloride ion sensor to obtain the amount of chloride ion deposition in a chloride-containing liquid is existing technology, and will not be described in detail here.

[0024] In this embodiment, the upright 30 is made of stainless steel pipe with a diameter of no more than 30mm, the column 1 and the crossbeam 2 are both made of corrosion-resistant steel, the arc-shaped frame 34 and the liquid collection tank 20 are both made of stainless steel, the water pipe 22 is made of corrosion-resistant plastic pipe, and the rope 33 is made of corrosion-resistant fiber rope. Example 2

[0025] A monitoring method using the three-dimensional chloride ion monitoring device in Example 1, wherein the drive motor 4 of the winding shaft, the control valve 21, and the pump 23 are respectively connected to a controller, and the storage module of the controller stores a program that can be run on the processing module. When the processing module executes the program, it performs the following steps: Step 1: Control the drive motor 4 to run, so that the movable ring 31 and the arc-shaped acquisition plate 32 move along the upright 30 to the target height, and then turn off the drive motor 4; Step 2: Control the operation of control valve 21 and pump 23 to spray / drip the liquid in the clear water pool in the collection tank 20 onto the arc-shaped collection plate 32. The purpose of this step is twofold: first, to prevent chloride ion saturation on the arc-shaped collection plate 32; and second, to promptly transfer and disperse the collected chloride ions into the liquid in the collection tank 20, so as to facilitate timely monitoring of chloride ion deposition. Step 3: Control the drive motor 4 to run at the set time point. First, make the moving ring 31 and the arc-shaped collecting plate 32 fall down along the upright 30 under the action of gravity and sink them below the surface of the chloride ion-containing liquid in the collection tank 20 for a set time (the purpose of this step is to make the chloride ions on the collecting plate dissolve in the liquid in the collection tank 20). Then, control the moving ring 31 and the arc-shaped collecting plate 32 to rise back to the target height. During the rainy period, the drive motor 4 is operated so that the maximum diameter of the spherical structure is exactly at the opening of the collection tank 20. At the same time, the control valve 21 and pump 23 need to be closed. After the rain ends, the drive motor 4 is operated to raise the spherical structure back to the target height. When the maximum diameter of the spherical structure is exactly at the opening of the collection tank 20, only a small amount of rainwater will flow into the collection tank 20, thus avoiding the collection tank 20 from being filled and affecting the monitoring results. Step 4: Obtain the chloride ion concentration in the chloride-containing liquid in the collection tank 20; Step 5: After one collection cycle is completed, collect chloride ions in the atmosphere at the next target altitude. Example 3

[0026] A monitoring method using the three-dimensional chloride ion monitoring device in Example 1 is used to collect chloride ion deposition data under specific wind direction conditions. Taking the collection of chloride ion deposition data under easterly wind direction as an example, the specific steps are as follows: Step 11: Number the 8 arc-shaped acquisition pieces 32. The arc-shaped acquisition piece 32 located in the due east direction is defined as acquisition piece A1, and the arc-shaped acquisition pieces 32 in the counterclockwise direction from this point are defined as A2 to A8 respectively. Step 12: Replace the arc-shaped collection pieces 32 corresponding to numbers A3~A7 with solid plastic pieces that cannot deposit chloride ions; Step 13: Fill the collection tank 20 and the clear water tank with a measured amount of pure water respectively; Step 14: When the east wind arrives, control the drive motor 4 to move the movable ring 31 and the arc-shaped collection plate 32 (the arc-shaped collection plates corresponding to A1, A3, and A8, as well as the solid plastic plate) along the upright 30 to the target height, and then turn off the drive motor 4; and control the control valve 21 and the pump 23 to spray the liquid in the clear water pool in the liquid collection tank 20 onto the arc-shaped collection plate 32; Step 15: After the east wind ends, control the drive motor 4 to run. First, make the movable ring 31 and the arc-shaped collection plate 32 fall down the upright 30 under the action of gravity and sink them below the surface of the chloride ion-containing liquid in the collection tank 20 for a set time. Then, calculate and obtain the chloride ion concentration in the chloride ion-containing liquid in the collection tank 20. Example 4

[0027] A monitoring method using the three-dimensional chloride ion monitoring device in Example 1, for collecting chloride ion deposition data at different heights, comprises the following steps: Step 21: Divide the required collection height into H1, H2, H3...Hn collection points; Step 22: Fill the collection tank 20 and the clear water tank with a measured amount of pure water respectively; Step 23: Control the drive motor 4 to move the movable ring 31 and the arc-shaped collection plates 32 (the arc-shaped collection plates corresponding to A1, A3, and A8, as well as the solid plastic sheet) along the upright 30 to the target height H1 (based on the center of the spherical structure formed by all the arc-shaped collection plates 32 with a spherical outer contour located at the target height H1), then turn off the drive motor 4; and control the control valve 21 and pump 23 to spray the liquid in the clear water pool in the liquid collection tank 20 onto the arc-shaped collection plates 32; Step 24: After the set collection time is completed, control the drive motor 4 to run. First, the movable ring 31 and the arc-shaped collection plate 32 will fall down the upright 30 under the action of gravity and be submerged below the surface of the chloride ion-containing liquid in the collection tank 20 for a set time. Then, calculate and obtain the chloride ion concentration in the liquid in the collection tank 20. The chloride ion concentration obtained at this time is used to reflect the chloride ion deposition at an atmospheric height H1. Then, discharge the chloride ion-containing liquid in the collection tank 20. Step 25: Referring to steps 22 to 24, obtain the chloride ion deposition at heights H1, H2, H3...Hn from top to bottom. Example 5

[0028] A three-dimensional chloride ion monitoring device, referring to Example 1 and in combination Figures 4 to 7 As shown, the main difference between this and Example 1 is that a solid stainless steel plate is used as the arc-shaped skeleton 34 of the arc-shaped collection plate 32. Hook slots (notches for hooking gauze bags) are provided on the top and west sides of the stainless steel plate. The gauze bag is hooked onto the stainless steel plate, covering its surface, similar to a gauze bag being fitted onto the stainless steel plate. Compared to Example 1, the greater advantage of this solution is that the gauze bag used for chloride ion deposition can be installed and removed within five seconds, making it very convenient to use.

[0029] In each embodiment, a limit key is provided on the upright 30, and a guide groove is provided on the movable ring 31. The limit key is fitted into the guide groove with a gap, so that the movable ring 31 can slide up and down along the upright 30 without rotating. In the embodiment, when the movable ring 31 and the arc-shaped collecting plate 32 move up and down along the upright 30, the stability of the arc-shaped collecting plate 32 is very good, and it will not swing at all, and there will be no problem that all the arc-shaped collecting plates 32 are parallel to the wind direction.

[0030] The scheme described in this embodiment is not only applicable to collecting chloride ions under any wind direction, but also allows for targeted collection of chloride ions only from specific airflows. It also avoids the problem of chloride ion saturation on the gauze without the need for a rainproof canopy. More importantly, it enables long-term, online, and rapid monitoring of chloride ions, and the gauze used is reusable, making it simpler and more convenient to use. Furthermore, the three-dimensional chloride ion monitoring device in this scheme has good stability and can be used to collect chloride ion deposition data at different altitudes. The corresponding chloride ion collection height can be flexibly controlled at the centimeter level, which is beneficial for providing more accurate experimental data for the study of three-dimensional chloride ion deposition in the atmosphere.

Claims

1. A monitoring method using a three-dimensional chloride ion monitoring device, comprising a column (1), a crossbeam (2) disposed at the top of the column (1), and a chloride ion collection unit suspended at the cantilever end of the crossbeam (2), characterized in that: The chloride ion collection unit includes a pole (30), the upper end of which is connected to a crossbeam (2), and the lower end of which is fixed to the ground. A movable ring (31) is fitted on the pole (30), and an arc-shaped collection plate (32) is set on the movable ring (31). All the arc-shaped collection plates (32) together form a spherical structure with a spherical outer contour, and there is a V-shaped space between adjacent arc-shaped collection plates (32). The movable ring (31) is connected to a rope (3). 3) At the end, the rope (33) passes over the guide wheel (3) on the column (1) and the crossbeam (2) and is connected to the winding shaft; when the winding shaft rotates clockwise, the rope (33) is wound up, which in turn drives the movable ring (31) and the arc-shaped collection plate (32) to move up along the column (30). When the winding shaft rotates counterclockwise, the movable ring (31) and the arc-shaped collection plate (32) fall down along the column (30) under the action of gravity; the arc-shaped collection plate (32) includes an arc-shaped frame. (34) A cotton yarn or cotton mesh (38) is provided on the arc-shaped frame (34), and the pores on the cotton yarn or cotton mesh (38) are no more than 0.5 mm; a slot (35) is provided on the movable ring (31), and a baffle is provided at the bottom of the slot (35). The vertical rod of the arc-shaped frame (34) is fitted in the slot (35) and is limited laterally and vertically; a liquid collection tank (20) is provided below the upright (30), and an independent cleaning device is provided inside the liquid collection tank (20). A water tank is provided with a water pipe (22) with a control valve (21) arranged along the column (1) and the crossbeam (2). A pump (23) is connected to the water pipe (22). The lower end of the water pipe (22) is connected to the clear water tank in the collection tank (20), and the upper end is located above the movable ring (31) so that the liquid dripping from the nozzle (36) at the upper end of the water pipe (22) can fall onto the arc-shaped collection plate (32). The probe of the chloride ion sensor extends into the chloride ion-containing liquid in the collection tank (20). The drive motor (4), control valve (21), and pump (23) of the take-up shaft are respectively connected to the controller. The storage module of the controller stores a program that can be run on the processing module. When the processing module executes the program, it performs the following steps: Step 1: Control the drive motor (4) to run, so that the movable ring (31) and the arc-shaped acquisition plate (32) move along the pole (30) to the target height, and then turn off the drive motor (4). Step 2: Control the operation of the control valve (21) and pump (23) so that the liquid in the clear water pool in the collection tank (20) drips onto the arc-shaped collection plate (32); Step 3: Control the drive motor (4) to run at the set time point. First, make the moving ring (31) and the arc-shaped collecting plate (32) fall down along the upright (30) under the action of gravity and sink them below the surface of the chloride ion-containing liquid in the collection tank (20) for a set time. Then, control the moving ring (31) and the arc-shaped collecting plate (32) to rise back to the target height. Step 4: Obtain the chloride ion concentration of the chloride-containing liquid in the collection tank (20); Step 5: After one collection cycle is completed, collect chloride ions in the atmosphere at the next target altitude; During the rainy period, the drive motor (4) is controlled to operate so that the maximum diameter part of the spherical structure is located at the opening of the liquid collection tank (20). After the rain ends, the drive motor (4) is controlled to operate so that the spherical structure rises back to the target height.

2. The monitoring method according to claim 1, characterized in that: The slot (35) is an arc-shaped slot, and the vertical rod of the arc-shaped frame (34) has a circular cross-section.

3. The monitoring method according to claim 2, characterized in that: The included angle between adjacent arc-shaped acquisition pieces (32) is 30~45°.

4. The monitoring method according to claim 3, characterized in that: The diameter of the opening of the liquid collection tank (20) is 5-10 mm larger than the outer diameter of the spherical structure.

5. The monitoring method according to claim 4, characterized in that: The upright (30) is made of stainless steel pipe with a diameter of no more than 30mm.

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