Rotation type cavitation erosion and erosive wear synergistic testing apparatus

A technology of synergy and test equipment, which is applied in the direction of testing wear resistance, sustainable manufacturing/processing, climate sustainability, etc. It can solve the problems of long time for testing and setting up equipment, few research reports, and failure to reveal the mechanism of valve damage. , to achieve the effect of easy promotion, simple structure and optimized design

Active Publication Date: 2014-08-06
嘉兴市燕知网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) At present, the research on the mechanism of multiphase flow wear in my country is not deep enough, and it takes a long time to set up related equipment, so it is difficult to extend the experimental results to engineering applications
[0007] (2) Many studies

Method used

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  • Rotation type cavitation erosion and erosive wear synergistic testing apparatus
  • Rotation type cavitation erosion and erosive wear synergistic testing apparatus
  • Rotation type cavitation erosion and erosive wear synergistic testing apparatus

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] Such as figure 1 As shown, the liquid-solid two-phase flow abrasion test device is installed. At the beginning of the experiment, the slurry tank 11 is placed on the forklift, and the fluid medium 21 with a certain concentration, such as coal water slurry, coal oil slurry or water mortar Wait, pour into the slurry tank 11, the liquid level is about 20cm below the upper cover 12 of the turntable. According to the experimental plan, select four numbered test pieces 14 and wipe the surface clean with alcohol. Weigh them five times with an electronic balance to record the original weight, and calculate the average value. Insert the test piece 14 and the cavitation inducer 15, 17, 18 and 19 into the slot of the upper cover 12 of the turntable, and then install the lower cover 13 of the turntable, and fasten the upper cover 12 with 4 uniformly distributed bolts 16 And turntable lower cover 13; then, use a forklift to lift the slurry tank 11, and use positioni...

Example Embodiment

[0030] Example 2

[0031] Imitating Example 1, only changing the oil-coal slurry, coal-water slurry or water mortar used in the fluid medium 21 in the embodiment 1 to a clean water medium, the installation of different angle cavitation inducers 15, 17, 18 and 19 can be carried out. Cavitation weight loss rate test.

[0032] In different experimental conditions, the speed r of the variable frequency motor 1, the angle θ of the test piece 14 and the cavitation time t, the density ρ of the liquid, and the number of cavitation σ can be changed separately to realize the cavitation inducer 15, The cavitation weight loss rate test of the fluid medium 21 under the induction of 17, 18 and 19, to establish the functional relationship between different influencing factors and the cavitation weight loss rate, that is, the weight loss rate is expressed as:

[0033] ϵ 2 = k · f ( r , θ , t , σ . . . )

Example Embodiment

[0034] Example 3

[0035] Following Example 1, only the cavitation inducers 15, 17, 18, and 19 in Example 1 were removed, and the fluid medium 21 was still coal oil slurry, coal water slurry or water mortar, and the erosion of specimen 14 was carried out. Wear test.

[0036] When testing under different experimental conditions, the speed r of the variable frequency motor 1, the angle θ and the wear time t of the test piece 14, the concentration w of the fluid medium 21, the density ρ of the liquid, the shape factor δ of the solid particles, and the solid Particle size d. Thus, the functional relationship between different influencing factors and wear rate is established, that is, the wear rate is expressed as:

[0037] ϵ 3 = k · f ( r , θ , t , w , ρ , δ , d . . . )

[0038] Through Example 1, Example 2 and Example 3, the weight loss rate of the specimen 14 under the synergistic effect of cavitation erosion and erosion, cavitat...

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Abstract

The invention discloses a rotation type cavitation erosion and erosive wear synergistic testing apparatus. A variable frequency motor is mounted at the upper end of a bell housing; the upper end of a stirring shaft is connected with the rotating shaft of the variable frequency motor through a coupler; the lower end of the stirring shaft penetrates through an upper cover plate and a lower cover plate of a turntable to be fixed; isosceles triangular test piece mounting grooves are uniformly distributed in the positions, which are located between the upper cover plate and the lower cover plate of the turntable and are 5/6 away from the circumferential radius; basic angles of the isosceles triangular test pieces are 45 degrees each; the vertical angles of the test piece mounting grooves face up and are identical in orientation; isosceles triangular cavitation induction unit grooves with different vertical angles are uniformly distributed in the positions which are located between the upper cover plate and the lower cover plate of the turntable and are 5/6 away from the circumferential radius at the interval of 90 degrees; the vertical angles of the isosceles triangular cavitation induction unit grooves are identical in orientation, and are opposite to the orientation of the vertical angles of the test piece mounting grooves; the test pieces with the same structure are respectively mounted in the test piece mounting grooves anticlockwise in the angles of 5 degrees, 95 degrees, 185 degrees and 275 degrees. The rotation type cavitation erosion and erosive wear synergistic testing apparatus disclosed by the invention can be applied to failure analysis, wear rate test, risk inspection and service life prediction for cavitation erosion and erosive wear damage of valves in the field of coal chemical industry.

Description

technical field [0001] The invention relates to a multiphase flow wear test device, in particular to a rotating cavitation and erosion wear synergy test device. Background technique [0002] Regulating valves are usually installed directly on system pipelines, and are widely used in process industries such as petroleum, coal chemical industry, and chemical fiber, and play a very important role in the development of the national economy. [0003] The study found that the failure forms of control valves are various and the mechanism is complex, among which the valve failure caused by erosion wear and cavitation (cavitation erosion) damage is the most common and common failure form of control valves in the process of throttling. Erosion wear damage has obvious locality, suddenness and risk, especially the wear thinning caused by the flow of solid particles and multiphase flow medium is more complicated and difficult to predict; cavitation damage is caused by the valve downstrea...

Claims

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Application Information

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IPC IPC(8): G01N3/56
CPCY02P20/10
Inventor 金浩哲偶国富肖定浩
Owner 嘉兴市燕知网络科技有限公司
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