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A comprehensive test device for anti-fouling and drag-reducing performance of underwater coatings for ships

A comprehensive testing and coating technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of being unable to simultaneously evaluate the drag-reducing performance of marine bio-adhesion strength and the influence of materials on drag-reducing performance, so as to ensure accuracy, rigorous design, Design scientific and reasonable effects

Active Publication Date: 2016-07-13
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, aiming at the inability to simultaneously evaluate the adhesion strength of marine organisms, the drag reduction performance of the material itself and the drag reduction performance of the material due to biofouling in the performance evaluation of the ship's underwater antifouling and drag reduction integrated material In order to provide a comprehensive test device for the antifouling and drag reduction performance of underwater coatings on ships, it can quickly test the adhesion strength of marine organisms, the drag reduction performance of the material itself, and the drag reduction performance parameters of the material due to biofouling, and simulate the antifouling The service environment of drag reduction integrated materials, to study the influence of flow velocity, shear force, time and other factors on the antifouling and drag reduction performance of materials

Method used

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  • A comprehensive test device for anti-fouling and drag-reducing performance of underwater coatings for ships
  • A comprehensive test device for anti-fouling and drag-reducing performance of underwater coatings for ships
  • A comprehensive test device for anti-fouling and drag-reducing performance of underwater coatings for ships

Examples

Experimental program
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Effect test

Embodiment 1

[0023]The main structure of this embodiment includes a water tank 1, a valve 2, a water pump 3, a delivery pipeline 4, a pressure gauge 5, a flow meter 6, a steady flow box 7, a sieve plate 8, a flow diversion box 9, a slit plate 10, Straight slit flow channel 11, sample stage 12, double differential pressure gauge 13, frame 14, control cabinet 15 and casters 16; water tank 1 made of PE material has a volume of 230L, and the water tank 1 is fixedly installed on the frame 14 for containing seawater There is a shock-absorbing rubber pad between the water tank 1 and the frame 14; a valve 2 is formed between the outlet of the water tank 1 and the water pump 3, and the valve 2 controls the on-off of the water flow in the water tank 1, and can be disassembled and replaced; the water pump 3 is made of German For the Steinberg magnetic pump, the water pump 3 is lined with polytetrafluoroethylene, which can effectively prevent seawater corrosion while ensuring the seawater transportatio...

Embodiment 2

[0034] This example uses 1×10 6 Sulphate-reducing bacteria per ml, shake well and set aside; apply the anti-fouling and drag-reducing material on a tinplate sheet with a specification of 100mm*51mm, a total of 6 parallel samples, and put 3 samples into the sample groove at the bottom of the flow channel The other 3 samples are put into the upper plug-in sample stage, and then the sample stage is fixed tightly, the flow rate is set to 7.0m / s, the flushing time is 5min, and the average value of the double differential pressure meter 13 recorded between 104-120H is 233.3Pa Then the sample is placed in the bacterium liquid of the above-mentioned sulfate-reducing bacteria, and it is taken out after 1 hour, and the number of bacteria in 15 fields of view is randomly counted for each sample by a multifunctional biological monitor; then the sample is put into the test device, the set flow rate is 7.0m / s, and the flushing time is 5min. The average value of the double differential press...

Embodiment 3

[0036] This example uses 1×10 6 pieces / ml of benthic diatoms (Spinodes constricta), shake well and set aside; apply the anti-fouling and drag-reducing material on a tinplate sheet with a specification of 100mm*51mm, a total of 3 parallel samples, and place the samples above In the diatom liquid, take it out after 1 hour, and use a multifunctional biological monitor to count the number of bacteria in 15 random fields of view for each sample; then put the sample into the sample stage, fix it tightly, and set the flow rate to 0.5m / s, the flushing time is 5min, and the shear force is calculated as 0.46Pa by the average value of the differential pressure transmitter 78-104H from the formula (2). The number of bacteria in the field was counted; the desorption rates of sulfate-reducing bacteria on the three samples were calculated by formula (1) to be 2.0%, 1.5%, and 1.3%, respectively.

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Abstract

The invention belongs to the technical field of performance evaluation of anti-fouling and drag-reducing materials for ships, and relates to a comprehensive test device for anti-fouling and drag-reducing performance of underwater coatings on ships. The water tank is fixedly installed on the frame, and a valve is formed between the outlet of the water tank and the water pump. It is connected with the steady flow box pipeline, and the delivery pipeline is equipped with a pressure gauge and a flow meter. A sieve plate is installed in the steady flow box, and a flow guide nozzle of the steady flow box is installed at the outlet of the steady flow box. There is a slit plate between the inlet and the diversion nozzle of the steady flow box, and the inlet of the differential pressure gauge water pipe connected to the double differential pressure gauge is made in the straight slit flow channel; the installation sample is made on the upper side of the straight slit flow channel The socket of the sample table of the table has a groove dug on the lower side, and the control cabinet is respectively connected with the water pump, pressure gauge, flow meter and double differential pressure gauge. The frame and the bottom side of the control cabinet are installed with casters; the structure is simple and the design Scientific and reasonable, easy to operate, high test accuracy, easy to move, wide range of applications.

Description

Technical field: [0001] The invention belongs to the technical field of performance evaluation of anti-fouling and drag-reducing materials for ships, and relates to a comprehensive test device for anti-fouling and drag-reducing performance of underwater coatings on ships, in particular to a flat slit type fouling bio-adhesion strength and material drag-reducing performance A comprehensive test device, simultaneously testing the adhesion strength of marine fouling organisms on the material surface and the influence of fouling organisms on the drag reduction performance of the coating. Background technique: [0002] Environmentally friendly anti-fouling and drag-reducing integrated materials are currently a hot spot in research and development. By using the material's own characteristics for antifouling, it has the advantages of being friendly to the environment and having a long antifouling cycle; while ensuring the antifouling performance of the material, taking into account...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 王利蔺存国张金伟
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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