Testing system for scouring corrosion of bending pipe and testing method

A technology for scouring corrosion and testing systems, which is applied in the direction of testing wear resistance, weather resistance/light resistance/corrosion resistance, measuring devices, etc. Simple, cost-saving effect

Active Publication Date: 2015-05-20
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the erosion corrosion of the elbow is a kind of local corrosion, which shows different corrosion characteristics in different parts of the elbow. Therefore, the existing experimental equipment cannot characterize the

Method used

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  • Testing system for scouring corrosion of bending pipe and testing method
  • Testing system for scouring corrosion of bending pipe and testing method
  • Testing system for scouring corrosion of bending pipe and testing method

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] Such as Figure 1-8 As shown, an elbow erosion corrosion test system includes a water tank 1, the outlet of the water tank 1 is connected to a centrifugal sand pump 3 through a pipeline, and a ball valve 2 is arranged on the pipeline between the water tank 1 and the centrifugal sand pump 3; the centrifugal sand pump 3 The output end of the test elbow 7 is connected to one end of the test elbow 7 through a straight pipeline, and the other end of the test elbow 7 is connected to the inlet of the water tank 1 through a pipeline, and a flow meter 8 is arranged in the connecting pipe between the test elbow 7 and the water tank 1; 8 is an electromagnetic flowmeter, and the inner wall of the test elbow 7 is provided with a plurality of grooves 9 at different positions along the circumferential direction and the axial direction; the bottom of each groove...

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Abstract

The invention discloses a testing system for the scouring corrosion of a bending pipe and a testing method. The testing system comprises a water tank, wherein an outlet of the water tank is connected with a centrifugal pump by a pipeline, and a ball valve is arranged on the pipeline between the water tank and the centrifugal pump; the output end of the centrifugal pump is connected with one end of the bending pipe to be tested by a straight pipeline, and the other end of the bending pipe to be tested is connected into an inlet of the water tank by a pipeline; a flow meter is arranged on a connecting pipeline between the bending pipe to be tested and the water tank; the inner wall of the bending pipe to be tested is provided with a plurality of grooves at different positions along the circumferential direction and the axial direction; the bottom parts of the grooves are provided with line holes for educing testing guide lines; the wall of the bending pipe to be tested is provided with two round holes which are respectively provided with an auxiliary electrode and a reference electrode. The testing system and the testing method disclosed by the invention have the advantages that the inner wall of the bending pipe to be tested is provided with the plurality of grooves and piece hanging can be carried out on different small areas of the bending pipe to be tested, so that the synchronous conduction of weight-loss test and electrochemical test for the scouring corrosion of the bending pipe to be tested is realized.

Description

technical field [0001] The invention relates to the field of erosion and corrosion experiment devices, in particular to an elbow erosion and corrosion testing system and a testing method, which are used in a laboratory to simulate the erosion and corrosion behavior of a metal elbow in a corrosive environment under certain conditions. Background technique [0002] At present, there are three kinds of experimental devices widely used in the study of pipeline erosion corrosion: rotary experimental device, jet experimental device, and pipe flow experimental device. The common point of the experimental devices is to create a relative movement between the medium and the sample, so that the fluid can cause erosion and corrosion to the pipeline. However, the rotating experimental device has high requirements on the stability of the motor and the verticality of the rotating shaft, and the eddy current caused by the rotation is greatly affected, which cannot truly simulate the actual ...

Claims

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Application Information

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IPC IPC(8): G01N3/56G01N17/02
Inventor 刘建国李自力胡宗武祁明华
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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