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Dual-arm backward erosion corrosion testing device

A reverse erosion and corrosion test technology, applied in the field of erosion and corrosion, can solve the problems that the influence of fluid flow state distribution cannot be evaluated, and the erosion and corrosion parameters cannot be obtained, so as to improve the actual effect, improve the stability of flow state, and easy to operate Effect

Active Publication Date: 2017-09-29
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

But at the same time, the numerical simulation method has some unavoidable problems. The main manifestations are that the setting of the boundary conditions of the numerical simulation needs to be based on certain assumptions, the calculation of corrosion and erosion in the numerical simulation must be based on a certain calculation model, and the time-accumulated The impact of wall corrosion product accumulation on fluid flow distribution cannot be evaluated. Therefore, although the numerical simulation method has been greatly developed, it is still impossible to obtain the most intuitive erosion corrosion parameters of the experimental research method.

Method used

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  • Dual-arm backward erosion corrosion testing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Using the B10 copper alloy plate as the sample, the medium contained in the test tank 2 is the real sea water in Xiamen sea area, where the real sea water is the sea water in the actual sea area taken at a distance of more than 50m from the shore in the test sea area at high tide level ; The test temperature is 45°C; the rotation speed of the two rotating shafts is 500rpm, and the rotation is opposite; the impact angle of the sample is 30°.

[0043] The experimental process is as follows:

[0044] (1) Install the samples on the two sample racks 7 respectively, adjust the angle between the sample and the vertical direction to be 30°, and fix the two sample racks 7 on the two turntables 6 in turn;

[0045] (2) Put the seawater from the real sea in Xiamen sea area into the experimental tank 2;

[0046] (3) Start the control cabinet 10 and the computer 9, complete the system self-inspection, and confirm that the signal processor and feedback adjustment software are effecti...

Embodiment 2

[0053] Using the B10 copper alloy plate as the sample, the medium contained in the test tank 2 is the real sea water in Xiamen sea area, where the real sea water is the sea water in the actual sea area taken at a distance of more than 50m from the shore in the test sea area at high tide level ;Test temperature is 45℃;

[0054] The rotating shaft located inside the hollow rotating shaft and the accessory parts arranged on the rotating shaft are discarded, that is, the single-axis rotation scour test is realized by using the rotating shaft of the present invention. The rotating speed of the rotating shaft is 500rpm; the impact angle of the sample is 0°.

[0055] The experimental process is as follows:

[0056] (1) Install the sample on the sample rack 7, adjust the sample vertically downward, and fix the sample rack 7 on the turntable 6;

[0057] (2) Put the seawater from the real sea in Xiamen sea area into the experimental tank 2;

[0058] (3) Start the control cabinet 10 an...

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Abstract

The invention discloses a dual-arm backward erosion corrosion testing device. The dual-arm backward erosion corrosion testing device comprises a bracket, a test groove, a computer feedback control system, an electrochemical workstation and two groups of transmission systems, wherein a heater is arranged in the test groove; each group of transmission systems comprises a frequency converter, a rotary table, a sample frame, a revolving shaft and a motor connected with the frequency converter; the motors are connected with upper ends of the revolving shafts; lower ends of the revolving shafts are vertically connected with the rotary tables; the sample frames are vertically connected with the revolving shafts; the computer feedback control system comprises a computer and a control cabinet; the heater and the two frequency converters are connected with the control cabinet; the control cabinet is used for controlling the two groups of transmission systems to drive the two revolving shafts to rotate reversely in order to drive the sample frames on the two rotary tables to rotate in the test groove; outer walls of the revolving shafts are provided with electrochemical assemblies which are connected with the electrochemical workstation, and rotation speed sensors which are connected with the computer. By adopting the dual-arm backward erosion corrosion testing device, dual-shaft reverse rotation is adopted, so that a more accurate relative motion speed can be obtained during rotation of a sample, the flow state stability of a medium can be improved, and an optimal erosion effect is achieved.

Description

technical field [0001] The invention relates to the technical field of erosion corrosion, in particular to a double-arm reverse erosion corrosion test device. Background technique [0002] Erosion corrosion is the phenomenon of metal damage or performance degradation caused by relative motion and corrosion between the metal surface and the corrosive medium. A kind of more harmful localized corrosion. Erosion corrosion is a process in which erosion and corrosion exist simultaneously in a solution, accompanied by complex interactions. Erosion is a mechanical process in which solid particles impact the surface of a material to cause removal or deformation of the material. Corrosion is caused by chemical or electrochemical reactions on the surface of the material. The process of material removal, erosion-corrosion encompasses everything from erosive dissolution to mechanical erosion, depending on the dominant mechanism. [0003] At present, there are mainly two methods to stud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56G01N17/00
CPCG01N3/567G01N17/00
Inventor 魏木孟姚敬华刘洋洋吴波杨博均
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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