Antifouling slow-release device for ocean temperature-salinity-depth sensor

Abstract

The utility model belongs to the technical field of antifouling of ocean monitoring instruments, and particularly relates to an antifouling slow-release device for an ocean temperature-salinity-depth sensor. The anti-fouling device comprises an anti-fouling tablet groove, an anti-fouling tablet and a fastener; the antifouling tablet groove comprises a tablet bearing face and a limiting groove edge arranged on the periphery of one side of the tablet bearing face. A tablet accommodating space is defined between the tablet bearing surface and the limiting groove edge, and the antifouling tablet is arranged in the tablet accommodating space; a plurality of release holes for realizing slow release of antifouling active substances in the antifouling tablets are formed in the tablet bearing surface in a penetrating manner; and the fastener is used for fixing the antifouling tablet groove and the antifouling tablet on a protective shell of the ocean temperature-salinity-depth sensor. According to the anti-fouling device, the slow release of the anti-fouling tablets is realized through the release holes in the anti-fouling tablet groove, and the marine organism fouling of the ocean temperature-salinity-depth sensor can be effectively prevented and controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-fouling of ocean monitoring instruments, and in particular relates to an anti-fouling slow-release device for an ocean temperature, salinity and depth sensor. Background Art

[0002] The temperature-salinity-depth sensor, also known as the temperature-salinity-depth meter (CTD meter), is a complex marine environment monitoring instrument that measures marine physical and chemical parameters such as seawater conductivity (Conductivity), temperature (Temperature) and pressure (Pressure) online over a long period of time. It integrates a variety of physical and chemical sensing components and has real-time multi-data acquisition capabilities. It has a complex structure and is expensive, making it a necessary instrument for marine water quality monitoring.

[0003] The marine environment is complex. Once marine equipment is directly exposed to seawater, marine microorganisms, plants and animals are very likely to attach and gather on its inner and outer surfaces, resulting in marine biofouling. Once fouling organisms attach, many problems such as signal distortion, rotation mechanism failure, and reduced reliability will occur, which will seriously test the service life of marine online monitoring equipment. Usually, the regular maintenance cycle of marine online monitoring equipment is only 10 to 60 days, and there is a widespread engineering problem of limited long-term service capability at sea, especially for complex and expensive marine monitoring instruments such as temperature, salinity and depth (CTD). Excellent anti-fouling treatment is the basic guarantee for obtaining accurate and reliable test data and long-term service operation.

[0004] The technical problems existing in the prior art include:

[0005] (1) At present, most of the removal is done manually or mechanically, but it is time-consuming and labor-intensive;

[0006] (2) The antifouling coating has a good effect, but it affects the data monitoring of the sensor sensing end;

[0007] (3) Electrolytic anti-fouling requires additional power consumption, is costly, and is not easy to integrate into remote sensors. Utility Model Content

[0008] In view of the above technical problems, the utility model provides an antifouling slow-release device for an ocean temperature, salinity and depth sensor. The antifouling device realizes the slow release of antifouling tablets through the release holes on the antifouling tablet slot, which can effectively prevent and control marine biological fouling of the ocean temperature, salinity and depth sensor.

[0009] The utility model is realized by the following technical solutions:

[0010] An anti-fouling slow-release device for an ocean temperature-salinity-depth sensor, the anti-fouling device comprising: an anti-fouling tablet slot, anti-fouling tablets and fasteners;

[0011] The anti-fouling tablet slot comprises a tablet bearing surface and a limiting groove edge arranged around one side of the tablet bearing surface; a tablet accommodating space is defined between the tablet bearing surface and the limiting groove edge, and the anti-fouling tablet is arranged in the tablet accommodating space;

[0012] The tablet bearing surface is provided with a plurality of release holes for realizing the slow and controlled release of the antifouling active substance in the antifouling tablet;

[0013] The fastener is connected to the antifouling tablet slot and is used to fix the antifouling tablet slot and the antifouling tablet to the protective shell of the ocean temperature, salinity and depth sensor.

[0014] Furthermore, the release holes on the tablet carrying surface are distributed in a uniform array, each hole has a diameter of 1-5 mm, and the center distance between two adjacent holes is 5-10 mm.

[0015] Furthermore, the height of the edge of the limiting groove is greater than or equal to the thickness of the anti-fouling tablet; the thickness of the anti-fouling tablet is 0.02-0.08 mm; and the thickness of the anti-fouling tablet groove is less than 0.15 mm.

[0016] Furthermore, the fastener includes a plurality of bolts and a plurality of nuts; the number of the bolts and the nuts is the same; one end of the bolt is fixedly connected to the tablet bearing surface in the tablet accommodating space, and the other end passes through the water hole on the protective shell of the ocean temperature, salinity and depth sensor and is connected to the nut.

[0017] A plurality of bolt holes are arranged on the antifouling tablet, the number of the bolt holes is the same as the number of the bolts, and the bolts pass through the bolt holes and are fixedly connected to the tablet bearing surface.

[0018] Furthermore, water flow holes are provided through the tablet bearing surface and the antifouling tablet; the water flow holes have the same size as the water holes on the protective shell of the ocean temperature, salinity and depth sensor.

[0019] Furthermore, the anti-fouling slow-release device is used for anti-fouling of a Sea-Bird SBE 37-SI CTD sensor.

[0020] Furthermore, for the Sea-Bird SBE 37-SI CTD sensor, the anti-fouling tablet groove and the anti-fouling tablet are provided on the top and side (one or two sides) of the sensor protective shell, and the anti-fouling tablet groove and the anti-fouling tablet are fixed to the protective shell of the Sea-Bird SBE 37-SI CTD sensor by the fastener.

[0021] Beneficial technical effects of the utility model:

[0022] The antifouling slow-release device provided by the utility model realizes the slow release of antifouling tablets through the release holes on the antifouling tablet groove, and can effectively prevent and control the marine biological fouling of the ocean temperature, salinity and depth sensor.

[0023] The anti-fouling slow-release device provided by the utility model fixes the anti-fouling tablet slot and the anti-fouling tablet to the protective shell of the ocean temperature, salinity and depth sensor through fasteners, which is easy to install and does not interfere with monitoring, and can effectively prevent the corresponding conductivity and thermocouple units under the protective shell. Moreover, the installation of the anti-fouling slow-release device does not require changing the original configuration of the sensor, and is easy to install and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the first antifouling tablet tank (without water flow holes) provided as an implementation example of the utility model;

[0025] Figure 2 A schematic diagram of the first antifouling tablet (without water flow holes) is provided for the implementation case of the utility model;

[0026] Figure 3 A schematic diagram of a second antifouling tablet slot (with water flow holes) provided as an implementation example of the utility model;

[0027] Figure 4 A schematic diagram of a second antifouling tablet (with water flow holes) is provided for the implementation case of the utility model;

[0028] Figure 5 It is the initial monitoring data of CTD without anti-fouling device;

[0029] Figure 6 This is the monitoring data of CTD equipped with anti-fouling device after 48 hours;

[0030] Figure numerals: 1. tablet bearing surface; 2. limiting groove edge; 3. anti-fouling tablet; 4. bolt; 5. water flow hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] On the contrary, the present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. Those skilled in the art can fully understand the present invention without the description of these details.

[0033] Embodiment 1: An antifouling slow-release device for an ocean temperature, salinity and depth sensor, the antifouling device comprising: an antifouling tablet slot, an antifouling tablet and a fastener;

[0034] like Figure 1-2 As shown, the anti-fouling tablet slot includes a tablet bearing surface 1 and a limiting groove edge 2 arranged around one side of the tablet bearing surface; a tablet accommodating space is defined between the tablet bearing surface and the limiting groove edge, and the anti-fouling tablet is arranged in the tablet accommodating space;

[0035] The tablet bearing surface is provided with a plurality of release holes for realizing the slow and controlled release of the antifouling active substance in the antifouling tablet;

[0036] The fastener is connected to the antifouling tablet slot and is used to fix the antifouling tablet slot and the antifouling tablet to the protective shell of the ocean temperature, salinity and depth sensor.

[0037] In this embodiment, the release holes on the tablet bearing surface are evenly distributed in an array, each hole has a diameter of 1-5 mm, and the center distance between two adjacent holes is 5-10 mm. In the present invention, the slow and controlled release of the antifouling active substance in the antifouling tablet can be achieved by adjusting the hole size.

[0038] In this embodiment, the height of the limit groove edge is greater than or equal to the thickness of the antifouling tablet; the thickness of the antifouling tablet is 0.02-0.08mm. Specifically, the thickness of the limit groove edge is 0.02-0.10mm; the thickness of the antifouling tablet groove is less than 0.15mm. By controlling the thickness of the antifouling tablet groove, it can be ensured that after the antifouling tablet groove is installed on the protective shell, the protective shell can be smoothly installed on the sensor, that is, the installation of the protective shell is not hindered.

[0039] In this embodiment, the fastener includes a plurality of bolts and a plurality of nuts; the number of the bolts and the nuts is the same; one end of the bolt is fixedly connected to the tablet bearing surface in the tablet accommodating space, and the other end passes through the water hole on the protective shell of the ocean temperature, salinity and depth sensor and is connected to the nut.

[0040] In this embodiment, if Figure 3-4As shown, water circulation holes are provided through the tablet bearing surface and the antifouling tablets; the water circulation holes are of the same size as the water holes on the protective shell of the ocean temperature, salinity and depth sensor. Specifically, during installation, the water circulation holes and the water holes are aligned and installed, so that the water outside the protective shell can flow through the water holes on the protective shell and enter the interior of the protective shell; through the provision of the water circulation holes, the coverage of the antifouling tablets can be expanded as much as possible without hindering the normal flow of water, thereby achieving a better antifouling effect on the ocean temperature, salinity and depth sensor. In the present utility model, the provision of water circulation holes is not necessary, and the antifouling tablet groove and the antifouling tablets can be installed on two adjacent water holes of the protective shell. In this case, it is not necessary to provide the water circulation holes.

[0041] In this embodiment, the anti-fouling slow-release device is used for anti-fouling of Sea-Bird SBE 37-SI CTD sensor.

[0042] In this embodiment, for the Sea-Bird SBE 37-SI CTD sensor, the anti-fouling tablet groove and the anti-fouling tablet are provided on the top and side (one or two side) of the sensor protection shell, and the anti-fouling tablet groove and the anti-fouling tablet are fixed to the protection shell of the Sea-Bird SBE 37-SI CTD sensor by the fasteners. Because the protection shell is located at the sensing end of the ocean sensor, the anti-fouling device can be stably installed and fixed around the sensing end of the ocean sensor for a long time by the fasteners.

[0043] In this embodiment, the anti-fouling tablet groove, the anti-fouling tablet and the fastener are all 3D printed, and the specific preparation method includes:

[0044] Prepare antifouling ink, add prepolymer, diluent, photoinitiator and antifouling active component to the antifouling ink; stir the components evenly, then ultrasonically vibrate for 30-60 minutes under light-proof conditions, and store at low temperature and away from light after the system is fully dispersed and evenly free of bubbles. Specifically, in this embodiment, weigh 10-30 parts of bisphenol A epoxy acrylate, 10-30 parts of polyethylene glycol diacrylate (n=about 14) (containing stabilizer MEHQ), 0.5-1.5 parts of phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide photoinitiator, 5-15 parts of zinc acrylate monomer, 0.5-1.5 parts of cuprous oxide, stir evenly, then ultrasonically vibrate for 60 minutes under light-proof conditions, and store at low temperature and away from light after the system is fully dispersed and evenly free of bubbles, to obtain the antifouling ink.

[0045] Pour the printing ink into the resin tank of the 3D printer, and design and optimize the structure and size of each component by UG (NX) 10.0 software (SIEMENS, Germany), fully consider the swelling effect of the antifouling tablets under water, and reserve swelling space. Import the 3D model into the printer in STL file format, digitally slice it into a series of 2D layers for controlling UV projection, and solidify the liquid photosensitive resin layer by layer by ultraviolet laser. Set the printing parameters according to different types of inks, and print the various components of the preparation device. Among them, the antifouling tablets are printed with the prepared antifouling ink, and the printing parameters are set as follows: the printing thickness is 0.02-0.08mm, the exposure time of each layer is 1-5s, the bottom exposure is 30-90s, and the number of bottom printing layers is 4-10 layers; the antifouling tablet slots and fasteners are printed with commercial transparent ABS ink, and the printing parameters are set as follows: the printing thickness is 0.05mm, the exposure time of each layer is 3s, the bottom exposure is 60s, and the number of bottom printing layers is 6 layers. The above-mentioned printed parts are all printed using a 3D printer with an ultraviolet laser wavelength of 405nm.

[0046] After printing, remove the printed part, use anhydrous ethanol to ultrasonically clean it for 3-5 minutes, use a hair dryer to dry it, and put it in a UV curing box for curing for 15-30 minutes to allow the remaining unreacted photocuring groups in the printed part to react completely.

[0047] Assemble the printed parts for use. Place the antifouling tablet in the antifouling tablet slot and fix it around the sensing end of the ocean sensor by fasteners.

[0048] This utility model is based on DLP 3D printing technology and can be designed and customized according to specific types and models of ocean sensors. It does not require additional power consumption, is low-cost, easy to install, does not interfere with monitoring, and can effectively prevent and control marine biofouling. It provides a new method for developing antifouling suitable for the sensing surface of ocean sensors, laying the foundation for obtaining high-quality, highly sensitive data information; it does not change the original configuration of the sensor, is easy to install and replace, and a 3D printer can be equipped on board to achieve long-term maintenance. The antifouling tablets have good comprehensive mechanical properties and antifouling effects, and can replace the tributyltin (TBT) antifouling tablets in the temperature, salinity and depth sensors to achieve environmentally friendly and pollution-free antifouling effects.

[0049] The antifouling device prepared in Example 1 was used to prevent and control biofouling of ocean temperature, salinity and depth sensors. Through laboratory data monitoring and real sea antifouling tests:

[0050] According to the titanium alloy protective shell of the Sea-Bird SBE 37-SI CTD sensor, the remaining space inside the shell, the structure and size of the anti-fouling device cup, combined with the design layout and monitoring principle of the temperature, salinity and depth sensing ends, a Sea-Bird SBE 37-SI CTD sensor anti-fouling device is customized without changing the original configuration of the sensor, and is installed and fixed. As a preferred embodiment, according to the large and small water holes on the surface of the titanium alloy protective shell of the sensor, combined with the thermocouple temperature sensing principle and layout, the anti-fouling tablet slot of the device is designed to be a rectangular groove type, with a built-in rectangular anti-fouling tablet, and the fasteners are in the form of bolts and nuts.

[0051] For the Sea-Bird SBE 37-SI CTD sensor, the protective shell is located at the sensing end of the ocean sensor, and there is a small through hole on the top of the protective shell and a large through hole on the side of the protective shell; the size of the antifouling tablet groove arranged on the top of the protective shell is: length 70-80mm, width 10-20mm, thickness 5-10mm, preferably 74.6mm×18mm×10mm; the corresponding antifouling tablet size is 64.5mm×18mm×6mm; the bolt minor diameter is 12.5mm, the height is 25mm, the center spacing is 40.5mm, and the number is 2; the nut major diameter is 16mm and the height is 15mm.

[0052] The dimensions of the antifouling tablet groove arranged on the side of the protective shell are: the length of the antifouling tablet groove is 120-130mm, the width is 30-40mm, and the thickness is 3-5mm (preferably 125mm×36mm×4mm); the size of the antifouling tablet is 115mm×31mm×1.8mm; the minor diameter of the bolt is 22.5mm, the height is 25mm, the center spacing is 78mm, and the number is 2; the major diameter of the nut 5 is 25mm and the height is 15mm.

[0053] A water flow hole is provided on the tablet bearing surface corresponding to the anti-fouling tablet slot provided on the side of the protective shell and on the anti-fouling tablet, and the size of the water flow hole is consistent with the size of the large through hole on the side of the protective shell. The specific shape of the anti-fouling tablet slot defined above is designed according to the structure of the sensor housing, and its specific size is sufficient to not hinder the reassembly of the sensor.

[0054] As a preferred embodiment, a plurality of small holes are provided on the surface of the antifouling tablet slot, and the antifouling active substance in the antifouling tablet is slow-released by adjusting the pore size. In this embodiment, the small holes on the surface of the antifouling tablet slot are distributed in a uniform linear array, each small hole has a diameter d of 3 mm, and the center distance l of adjacent small holes is 7 mm.

[0055] As a preferred implementation, based on the above structural design, the 3D model is imported into the 3D printer in STL file format, the printing ink is poured into the resin tank, the printing parameters are set, and the components of the printing device are printed.

[0056] Place the printed rectangular anti-fouling tablet inside the anti-fouling tablet slot for assembly, disassemble the titanium alloy protective shell of the CTD sensor, and install and fix the built-in tablet anti-fouling tablet slot inside the protective shell (near the conductivity and thermocouple unit) through nuts;

[0057] After fixing and replacing, the protective shell with the anti-fouling device is reinstalled on the CTD sensor. After that, the CTD sensor equipped with the 3D printed anti-fouling device is tested through laboratory data monitoring and real sea anti-fouling tests. Figure 5 The data monitoring results of the CTD sensor equipped with the 3D printed anti-fouling device provided by the implementation case of the utility model in the laboratory. The results show that after 48 hours, the monitoring data of the CTD sensor equipped with the anti-fouling device ( Figure 5 The initial monitoring data without anti-fouling devices ( Figure 6 Compared with the data shown in the figure, no data drift occurred, which proves that the anti-fouling active substances released by the anti-fouling device will not interfere with the data monitoring of the sensor.

[0058] The results of the real sea anti-fouling test show that after one month of real sea sampling, a large number of white shell-like marine organisms are attached to the surface of the conductivity sensing unit of the CTD sensor without an anti-fouling device, while the surface of the conductivity sensing unit equipped with an anti-fouling device is relatively clean. In addition, the 3D printed anti-fouling tablets at the water inlet of the conductivity sensing unit also show excellent anti-fouling effects, with a large number of marine microorganisms attached around them, which is in sharp contrast to the anti-fouling tablets. This ensures that the seawater will not be blocked due to severe fouling, thereby affecting the conductivity monitoring results. The thermocouple sensing unit of the CTD sensor equipped with an anti-fouling device has greatly reduced fouling compared to that without an anti-fouling device. After removing the anti-fouling device, the inner surface of the sensor protective shell is still relatively clean.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-fouling slow-release device for an ocean temperature, salinity and depth sensor, characterized in that: The anti-fouling slow-release device comprises: an anti-fouling tablet slot, an anti-fouling tablet and a fastener; The anti-fouling tablet slot comprises a tablet bearing surface and a limiting groove edge arranged around one side of the tablet bearing surface; a tablet accommodating space is defined between the tablet bearing surface and the limiting groove edge, and the anti-fouling tablet is arranged in the tablet accommodating space; The tablet bearing surface is provided with a plurality of release holes for realizing the slow and controlled release of the antifouling active substance in the antifouling tablet; The fastener is connected to the antifouling tablet slot and is used to fix the antifouling tablet slot and the antifouling tablet to the protective shell of the ocean temperature, salinity and depth sensor.

2. The anti-fouling slow-release device for an ocean temperature, salinity and depth sensor according to claim 1, characterized in that: The release holes on the tablet bearing surface are evenly distributed in an array, each hole has a diameter of 1-5 mm, and the center distance between two adjacent holes is 5-10 mm.

3. The anti-fouling slow-release device for an ocean temperature, salinity and depth sensor according to claim 1, characterized in that: The height of the edge of the limiting groove is greater than or equal to the thickness of the anti-fouling tablet; The thickness of the antifouling tablet is 0.02-0.08 mm; the thickness of the antifouling tablet groove is less than 0.15 mm.

4. The anti-fouling slow-release device for an ocean temperature-salinity-depth sensor according to claim 1, characterized in that: The fasteners include a plurality of bolts and a plurality of nuts; the number of the bolts and the nuts is the same; one end of the bolt is fixedly connected to the tablet bearing surface in the tablet accommodating space, and the other end passes through the water hole on the protective shell of the ocean temperature, salinity and depth sensor and is connected to the nut.

5. The anti-fouling slow-release device for an ocean temperature, salinity and depth sensor according to claim 4, characterized in that: A plurality of bolt holes are arranged on the antifouling tablet, the number of the bolt holes is the same as the number of the bolts, and the bolts pass through the bolt holes and are fixedly connected to the tablet bearing surface.

6. The anti-fouling slow-release device for an ocean temperature, salinity and depth sensor according to claim 1, characterized in that: Water flow holes are provided through the tablet bearing surface and the antifouling tablet; the water flow holes have the same size as the water holes on the protective shell of the ocean temperature, salinity and depth sensor.

7. The anti-fouling slow-release device for an ocean temperature, salinity and depth sensor according to claim 1, characterized in that: The anti-fouling slow-release device is used for anti-fouling of Sea-Bird SBE 37-SI CTD sensor.

8. The anti-fouling slow-release device for an ocean temperature, salinity and depth sensor according to claim 7, characterized in that: For the Sea-Bird SBE 37-SI CTD sensor, the anti-fouling tablet groove and the anti-fouling tablet are provided on the top and the side of the sensor protective shell, and the anti-fouling tablet groove and the anti-fouling tablet are fixed to the protective shell of the Sea-Bird SBE 37-SI CTD sensor by the fastener.

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