Method for evaluating ultra-long service electrochemical performance of aluminum anode for immersed tube steel shell and detection equipment
An evaluation method and detection equipment technology, applied in the direction of material electrochemical variables, measuring devices, scientific instruments, etc., can solve problems such as difficulties in evaluating the electrochemical performance of aluminum anodes, achieve quality control indicators, and solve the effects of inconsistent test conditions
Active Publication Date: 2020-07-03
SUNRUI MARINE ENVIRONMENT ENG +1
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[0008] The first purpose of the present invention is to provide a method for evaluating the electrochemical performance of an aluminum anode for an immersed tube steel shell with super long service, which solves the technical problem of difficult evaluation of the electrochemical performance of the aluminum anode in the backfill medium of the immersed tube
[0009] The second purpose of the present invention is to provide a super-long-service electrochemical performance detection device for aluminum anodes used in immersed tube steel shells, which solves the technical problem of difficult evaluation of the electrochemical performance of aluminum anodes in the backfill medium of immersed tubes
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[0038] "Ranges" are disclosed herein in terms of lower limits and upper limits. There can be one or more lower bounds, and one or more upper bounds, respectively. A given range is defined by selecting a lower limit and an upper limit. Selected lower and upper limits define the boundaries of a particular range. All ranges that may be defined in this manner are inclusive and combinable, ie, any lower limit may be combined with any upper limit to form a range. For example, ranges of 60-120 and 80-110 are listed for a particular parameter, with the understanding that ranges of 60-110 and 80-120 are contemplated. Additionally, if the minimum range values 1 and 2 are listed, and if the maximum range values 3, 4, and 5 are listed, the following ranges are all expected: 1-3, 1-4, 1-5, 2- 3, 2-4 and 2-5. In the present invention, unless otherwise specified, all the embodiments and preferred embodiments mentioned herein can be combined with each other to form new technical solut...
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The invention discloses a method for evaluating ultra-long service electrochemical performance of an aluminum anode for an immersed tube steel shell and detection equipment, and the evaluation methodcomprises the steps: taking an immersed tube backfill medium as a filling medium of an anode, and measuring the mixed resistivity of the immersed tube backfill medium as a control parameter for the evaluation of the electrochemical performance of the aluminum anode; and measuring the capacitance of the backfill medium of the immersed tube with the specified mixed resistivity to serve as an electrochemical performance evaluation index. According to the invention, the immersed tube backfill medium is adopted to embed the aluminum anode for capacitance test. The working environment of the aluminum anode for the immersed tube steel shell is simulated more truly. The electrochemical performance evaluation test of the aluminum anode is completed by controlling the mixing resistivity. The problemthat test conditions are not unified due to non-homogeneity of a test medium is solved, comparison of the performance of the aluminum anode and material screening under the same mixed resistivity level in the non-homogeneous medium are achieved, and therefore the quality control index of the aluminum anode for the immersed tube steel shell can be further achieved.
Description
technical field [0001] The invention relates to the technical field of corrosion and protection, in particular to an evaluation method and detection equipment for the super-long service electrochemical performance of an aluminum anode for an immersed tube steel shell. Background technique [0002] The design service life of the steel shell immersed tube tunnel is usually 50 to 100 years. The immersed tube tunnel is placed in the backfill stone / sea mud area that is difficult to inspect and maintain in the later stage. For such a long service life and difficult to inspect and maintain during the marine environment steel structure, its anti-corrosion protection can only be achieved by coating and cathodic protection. way of combining. And because the steel shell is in the corrosion area covered by backfill stones and seabed mud, the anti-corrosion coating is mainly reflected in the first half of the life cycle, and cannot be effective for a long time during the entire life of ...
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Login to view more IPC IPC(8): G01N27/26G01N27/04G01N27/22E02D33/00
CPCG01N27/26G01N27/041G01N27/22E02D33/00Y02A90/30
Inventor 赵永韬王康臣宋神友孙仁兴尹萍牟俊生汪相辰金文良
Owner SUNRUI MARINE ENVIRONMENT ENG
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