CN202351159U

CN202351159U - Testing pool device for field monitoring of corrosion resistance of ship body coating

Info

Publication number: CN202351159U
Application number: CN2011204111166U
Authority: CN
Inventors: 黄婷; 王晶晶; 叶章基
Original assignee: 725th Research Institute of CSIC
Current assignee: 725th Research Institute of CSIC
Priority date: 2011-10-26
Filing date: 2011-10-26
Publication date: 2012-07-25
Anticipated expiration: 2021-10-26

Abstract

The utility model discloses a testing pool device for field monitoring of corrosion resistance of a ship body coating. The testing pool device comprises a solution pool, a water outlet, a magnet, a sealing ring, a reference electrode and a counter electrode, wherein the magnet is absorbed on the outer circle of a chassis of the solution pool, so that a rubber ring clings to the coating, thus the solution pool is sealed; testing matter solution is filled into the solution pool, the reference electrode and the counter electrode are soaked into the testing matter solution, the reference electrode is located in one electrode insertion port and the counter electrode is located in the other electrode insertion port. The testing pool device, provided by the utility model, has the advantages of safety in use and simple in operation, the testing pool can be directly fixed in the surface of a steel substrate in a vertical status, and electrolyte solution is added to carry out the test of electrochemical impedance spectroscopy; the device is combined with an electrochemical work station, so that the corrosion resistance of the coatings of the steel structures of the ship body and an ocean engineering facility, and the corrosion condition of the steel substrate below the coating are monitored in a real-time manner to meet the requirements of the field test.

Description

But a kind of test pool device of field monitoring hull coating decay resistance

Technical field

The utility model relates to a kind of measuring technology, but particularly a kind of test pool device of field monitoring hull coating decay resistance.

Background technology

Chemical impedance spectrum development has become a kind of method of evaluation coating decay resistance commonly used so far, and the method for testing of existing at present iso standard regulation electrochemical impedance spectroscopy also has the more test pool device that is used for the electrochemical impedance spectroscopy test simultaneously both at home and abroad.But mostly present stage is the test to the chamber model electrochemical impedance spectroscopy that experimentizes, and does not have corresponding on-the-spot test technology.Through the patent inquiry, do not retrieve the related data of the test pool device that can be used for vertical steel substrate surface coating electro-chemical test yet.

But the test pool device that does not have field monitoring hull erosion shield electrochemical impedance spectroscopy at present both at home and abroad.Therefore, the invention of this patent, the decay resistance that can carry out real ship, outdoor steel substrate facility member detects and corrosion mechanism research.

Summary of the invention

But this patent technical matters to be solved provides a kind of test pool device of field monitoring hull coating decay resistance; Can the combined with electrochemical workstation; Field monitoring coating decay resistance; Estimate fast the corrosion condition of steel substrate under coating protection performance and the coating, for boats and ships and oceanographic engineering facility corrosion resistance of coating provide practicable testing scheme, assessing serviceable life for the mechanism research of coating protection and coating provides corresponding experimental basis.

For the purpose that realizes solving the problems of the technologies described above, the utility model has adopted following technical scheme:

But the test pool device of a kind of field monitoring hull coating decay resistance of this patent is characterised in that: comprise solution pool, water delivering orifice, magnet, O-ring seal, contrast electrode, to electrode; Magnet is adsorbed on outer ring, solution pool chassis, makes rubber ring be close to coating, makes the solution pool sealing; Test matter solution is filled it up with in solution pool, and contrast electrode and electrode is soaked in the test matter solution, contrast electrode are arranged in an electrode and insert mouthful, electrode is positioned at another electrode inserts mouthful.

Described contrast electrode can be saturated calomel electrode, Ag/AgCl electrode etc.

Describedly can be platinum niobium silk electrode to electrode.

Principle of work of the present invention is the magnet absorption steel substrate through outer ring, solution pool chassis, thereby seal with elastometic washer is sealingly fastened in vertical steel substrate coating surface with solution pool.Install as a wholely, behind the magnet on chassis screw is housed, the upper-lower position of fine-tuning magnet.

Method of application is:

(1) sealing of solution pool device: through the magnet absorption of outer ring, solution pool chassis, then finely tune magnet positions, make rubber ring be close to coating, the solution pool good seal;

(2) installation of test electrode system: will test required test matter solution such as 3.5%NaCl solution and fill it up with solution pool; Contrast electrode is put into any electrode insert mouth; Electrode is then put into another electrode insert mouthful, make contrast electrode and electrode is soaked in the test matter solution.

Through adopting technique scheme, this patent has following beneficial effect:

Test pool device of the present invention is safe in utilization, easy and simple to handle, can directly be fixed in the steel substrate surface of plumbness, like the steel hull surface, then in solution pool, adds electrolyte solution and can carry out the test of electrochemical impedance spectroscopy; After the device of inventing in this project is fixing; The combined with electrochemical workstation can be monitored the corrosion condition of steel substrate under hull and oceanographic engineering facility steel substrate corrosion resistance of coating and the coating in real time; Satisfy the demand of on-the-spot test; Thereby support for the corrosion protection of boats and ships and on-call maintenance provide accurate rich data, have high economic benefit and social benefit.

Description of drawings

Fig. 1 is a test pool device overall schematic.

Fig. 2 is a test pool bottom of device synoptic diagram.

Fig. 3 is the match circuit that test data analyzer adopts.

Fig. 4 is the 1st test impedance Bode diagram.

Fig. 5 is the 1st test real part imaginary part figure.

Among the figure, 1 for electrode inserts mouth, and 2 is solution pool, and 3 is water delivering orifice, and 4 is screw, and 5 is magnet, and 6 is base steel and surface coating, and 7 is O-ring seal.

Embodiment

1 test pool device

1.1 the solution pool inner cavity size is: diameter 20 ~ 40mm, height 30 ~ 50mm adopts the higher polyester manufacture of anti-corrosion intensity (like polymethylmethacrylate, polycarbonate etc.);

1.2 solution pool outer wall chamber is of a size of: diameter 30 ~ 50mm, height 40 ~ 60mm adopts the higher polyester manufacture of anti-corrosion intensity equally;

1.3 solution pool chassis size: diameter 80 ~ 120mm, the cavity of putting electrolyte solution is with outer eight blocks of magnet outward, and every magnet diameter is 17mm, is uniformly distributed on the whole chassis annulus;

1.4 electrode inserts mouthful: inner diameter is 4 ~ 9mm, from then on mouthful adds electrolyte solution before the test, inserts contrast electrode during test respectively and to electrode;

1.5 water delivering orifice: inner diameter is 3 ~ 6mm, and test is closed water delivering orifice before electrolyte solution is injected test pool, opens clip after test finishes electrolyte solution is discharged from water delivering orifice;

2 electrochemical impedance spectroscopy test methods

2.1 the electrochemical impedance spectroscopy test typical material of selecting for use: sandblast steel plate+epoxy coating, size of sample: 150 * 250mm

2.2 electrolyte solution: 3.5%NaCl solution

2.3 select electrode for use: saturated calomel reference electrode, platinum niobium silk is to electrode

2.4 test: test piece installation testing pond, behind the adding 3.5%NaCl solution soaking 24h, carry out the electrochemical impedance spectroscopy test

2.5 test findings:

The epoxy coating model carries out the electrochemical impedance spectroscopy test under vertical state, adopt the equivalent electrical circuit sunykatuib analysis, equivalent circuit Fig. 3, and Fig. 4 and Fig. 5 are seen in the equivalent electrical circuit matched curve; Obtain coating result data information, concrete test figure is seen table 1.

Table 1 coating information data

According to requirement of the present invention; Select for use the model that applies epoxy coating to carry out the electrochemical impedance test; Can the test pool device be fixed in the model of plumbness; Add and test after the 3.5%NaCl solution soaking is soaked 24h, not finding in the immersion process has drainage, and test pool device favorable sealing property is described.Test findings shows, uses this equipment directly to carry out the electrochemical impedance spectroscopy test to the steel substrate coating of plumbness, can satisfy the electrochemical impedance spectroscopy test request of the steel substrate surface coating of plumbness.

Claims

1. OneBut the test pool device of kind of field monitoring hull coating decay resistance is characterized in that: comprise solution pool, water delivering orifice, magnet, O-ring seal, contrast electrode, to electrode; Magnet is adsorbed on outer ring, solution pool chassis, makes rubber ring be close to coating, makes the solution pool sealing; Test matter solution is filled it up with in solution pool, and contrast electrode and electrode is soaked in the test matter solution, contrast electrode are arranged in an electrode and insert mouthful, electrode is positioned at another electrode inserts mouthful.

2. but according to the test pool device of the said field monitoring hull of claim 1 coating decay resistance, it is characterized in that: described contrast electrode is saturated calomel electrode, Ag/AgCl electrode.

3. but according to the test pool device of the said field monitoring hull of claim 1 coating decay resistance, it is characterized in that: described is platinum niobium silk electrode to electrode.