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A test device for simulating marine engineering materials in sea mud corrosion environment

A technology for testing devices and corrosive environments, applied in measuring devices, analysis materials, weather resistance/light resistance/corrosion resistance, etc., can solve the problems of large manpower and capital requirements, low sample recovery rate, large sample volume, etc., to achieve Easy to operate, safe and easy to operate, stable and reliable operation

Active Publication Date: 2018-03-23
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the corrosion test and evaluation of marine engineering materials in the sea mud environment mostly adopts the field burying method. The field burying method has problems such as large sample volume, long cycle, large manpower and capital requirements, and low sample recovery rate. There are no relevant reports on the test device for simulating marine engineering materials in the sea mud corrosion environment

Method used

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  • A test device for simulating marine engineering materials in sea mud corrosion environment
  • A test device for simulating marine engineering materials in sea mud corrosion environment
  • A test device for simulating marine engineering materials in sea mud corrosion environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Corrosion test of 45# steel sea mud coating under simulated natural conditions of ebb and flow.

[0034] Test sample: 45# steel;

[0035] Test medium: Shihai sea water, Shihai sea mud in Xiamen sea area;

[0036] Test conditions

[0037] a) Test temperature: 45°C;

[0038] b) Time interval between high tide and low tide: 6h;

[0039] c) Test medium replacement frequency: 7d;

[0040] d) Test time: 30 days;

[0041] Experimental procedure

[0042] a) close the seventh manual valve 20 and the eighth manual valve 21, and open the remaining manual valves;

[0043] b) Put real sea mud in the test chamber 1, and embed the test samples in parallel, and the test samples need to keep a certain distance;

[0044] c) fill up the real sea seawater in the circulating sedimentation tank 4 and the clean water tank 5;

[0045] d) Set parameters such as test temperature, time interval between rising and falling tides, and test liquid level;

[0046] e) Openin...

Embodiment 2

[0052] By the comparison of the above table, the test sample tested by this test device has a similar corrosion form with the test sample in the natural environment, and the difference in corrosion rate can reflect the influence of test parameters, and has a certain acceleration, which illustrates the present invention The test device is reliable in simulating the corrosion of natural sea mud environment and testing the corrosion resistance of metals, and provides a test platform for marine engineering material selection and evaluation. Embodiment 2: The overload protection test of the electric diaphragm pump.

[0053] Test sample: none;

[0054] Test medium: ordinary tap water;

[0055] Test conditions

[0056] a) Test temperature: room temperature;

[0057] b) Time interval between high tide and low tide: 2h;

[0058] Experimental procedure

[0059] a) close the first manual valve 14, the second manual valve 15, the seventh manual valve 20 and the eighth manual ...

Embodiment 3

[0065] Embodiment 3: Water replenishment operation test of the clean water tank.

[0066] Test sample: no

[0067] Test medium: ordinary tap water

[0068] Test conditions

[0069] a) Test temperature: room temperature;

[0070] b) Time interval between high tide and low tide: 2h;

[0071] Experimental procedure

[0072] a) close the seventh manual valve 20 and the eighth manual valve 21, and open the remaining manual valves;

[0073] b) Add half a box of ordinary tap water in the circulating sedimentation tank 4, and fill up the ordinary tap water in the clear water tank 5;

[0074] c) Set parameters such as test temperature, time interval between rising and falling tides, and test liquid level, and set the maximum value of test liquid level parameters;

[0075] d) Opening test: At this time, the fourth solenoid valve 11, the first solenoid valve 8 and the second battery valve 9 are opened simultaneously, the electric diaphragm pump 6 is started, and the test ch...

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Abstract

A test device for simulating marine engineering materials in a sea mud corrosion environment, including a test box, a control box, a sensor signal processor, a circulating sedimentation tank, a clean water tank, an electric diaphragm pump, an open pipe, a first solenoid valve, a second Solenoid valve, third solenoid valve, fourth solenoid valve, fifth solenoid valve, sixth solenoid valve, first manual valve, second manual valve, third manual valve, fourth manual valve, fifth manual valve, Sixth manual valve, seventh manual valve, eighth manual valve, first check valve, second check valve, salinity sensor, pH sensor, temperature sensor, dissolved oxygen sensor, first liquid level sensor, second liquid level sensor The level sensor and the third liquid level sensor, the test device fully simulates the corrosion environment of sea mud in the natural environment, and can also simulate the effects of periodic rising and falling tides, sunshine, etc., and reproduces the natural environment of sea mud corrosion to the greatest extent. Cyclic sedimentation The combination of the tank and the clean water tank realizes the dynamic balance of the corrosive medium.

Description

technical field [0001] The invention belongs to the technical field of test devices, in particular to a test device for simulating marine engineering materials under sea mud corrosion environment. Background technique [0002] The corrosion rate and measurement technology of marine engineering materials such as metals, reinforced concrete, and coatings are directly related to marine engineering design. The corrosion rate and measurement technology of the material is a matter of great concern to people. [0003] Studies have shown that due to the complex corrosion environment unique to sea mud, in sea mud in different regions and different corrosion environments, the corrosion rate of steel will vary by more than 10 times, and the corrosion in the presence of anaerobic bacteria may even perforate submarine pipelines, so it is obtained It is of great practical significance to form a complete set of tests and evaluations of the actual corrosion rates of marine engineering mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00
Inventor 魏木孟姚敬华杨博均
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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