Multiphase flow erosion local corrosion testing apparatus

A technology for localized corrosion and testing devices, which is used in measuring devices, testing wear resistance, weather resistance/light resistance/corrosion resistance, etc., can solve the problems of electrochemical signal differentiation and uneven distribution of corrosion samples that cannot be eroded, and achieves a simple structure. , Low production cost, good operability

Inactive Publication Date: 2013-08-07
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Erosion corrosion is a kind of local corrosion, and the electrochemical characteristics of metal materials are unevenly distributed locally. The current testing machine and the electrochemical testing methods used such as dynamic potential scanning method, linear polarization, electrochemical AC impedance spectros

Method used

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  • Multiphase flow erosion local corrosion testing apparatus
  • Multiphase flow erosion local corrosion testing apparatus
  • Multiphase flow erosion local corrosion testing apparatus

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Embodiment Construction

[0024] The present invention will be described in further detail below with reference to the drawings.

[0025] Such as figure 1 As shown, the multi-phase flow erosion local corrosion test device includes slurry pump 1, slurry tank 2, agitator 5, pressure gauge 6, electromagnetic flow meter 7, pipe flow scouring pipe section 8, jet scouring pipe section 9, thermocouple 4. Low temperature constant temperature circulator 3; slurry tank 2 is used to contain the test medium, and a stirrer 5 is installed above the slurry tank 2 to stir the medium in the slurry tank 2; the slurry tank 2 is equipped with a thermocouple 4, The thermocouple 4 is connected to the low temperature thermostat circulator 3. The thermocouple 4 monitors the temperature of the medium in the slurry tank 2, and the low temperature thermo circulator 3 controls its own working state according to the value measured by the thermocouple 4 to adjust the temperature in the slurry tank 2. Medium temperature; the bottom end...

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Abstract

The invention relates to a multiphase flow erosion local corrosion testing apparatus. The testing apparatus comprises an ore pulp pump, a slurry tank, a stirrer, a pressure gage, an electromagnetic flowmeter, a pipe flow erosion pipe section, a jet flow erosion pipe section, a thermocouple and a low temperature constant temperature circulator. The testing apparatus is characterized in that the stirrer is arranged above the slurry tank, the thermocouple is mounted in the slurry tank and is connected with the low temperature constant temperature circulator, the bottom end of the slurry tank is connected with the ore pulp pump through a feed pipe, a ball valve is installed on the feed pipe, an outlet pipe of the ore pulp pump is provided with a first stop valve and is divided into two paths through the stop valve, one path returns to the slurry tank after passing through a second stop valve, and the other path returns to the slurry tank after passing through the pressure gage, the electromagnetic flowmeter, the pipe flow erosion pipe section and the jet flow erosion pipe section. According to the invention, characteristics of pipe flow and jet flow erosion-corrosion testing machines are combined, pipe flow erosion and jet flow erosion local corrosion tests can be simultaneously or individually carried out, and the testing apparatus has the characteristics of a small size, a simple structure, low manufacturing cost and good operationality.

Description

Technical field [0001] The invention belongs to the technical field of erosion corrosion research, and specifically relates to a multiphase flow erosion local corrosion test device. Background technique [0002] Erosion corrosion is the phenomenon of metal damage caused by high-speed relative movement between the metal surface and the corrosive fluid. It is the result of the synergistic effect of erosion and corrosion on the material, and it is a kind of local corrosion that is more harmful. Erosion corrosion is widespread in various industrial processes. Equipment exposed to moving fluids, such as pipelines, pipe fittings, and pump flow parts, will be damaged by erosion corrosion to varying degrees, especially in two-phase solid-phase particles. In flow or multiphase flow, the damage is more serious. Multiphase flow erosion and corrosion is a very complicated process, which is affected by many factors such as fluid mechanics factors, material factors, solid phase particles in t...

Claims

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Application Information

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IPC IPC(8): G01N3/56G01N17/02
Inventor 唐晓李强李焰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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