High-temperature solid particle erosion test device

Abstract

The invention discloses a high-temperature solid particle erosion test device, and relates to the technical field of material erosion wear and protection. The high-temperature solid particle erosion test device mainly comprises a plurality parts such as an air compressor, an air pressure gauge, a flow regulating valve, a solid desiccant, a buffer tank, a heating coil pipe, a high-temperature gas storage tank, a temperature controller, a thermodetector, a mass flow meter, a sand storage tank, a magnetic stirrer, a sand mixer, an accelerating tube nozzle, an upper sealing test cavity, a strong adsorption sticky plate, an adsorption banister brush, a limiting clamping groove, a workbench frame, a lower sealing test cavity, a rotary separator, a particle collection box, a dust collection purifier, a sample clamping tester, a double-disc tachymeter and the like. Solid particles are uniformly stirred, heated and heated by a high-temperature gas, and the heat efficiency is high; secondary interference of the solid particles is avoided through speed measuring of the double-disc speedometer, and the double-disc speedometer is simple in equipment and convenient to operate; and a magnetic stirring device ensures the continuity of sand discharge of a nozzle on the premise of ensuring sealing.

Description

technical field [0001] The invention relates to an erosion test device, to the technical field of material erosion wear and protection, in particular to a high-temperature solid particle erosion test device. Background technique [0002] Erosion refers to a kind of wear phenomenon that occurs on the surface of materials when they are impacted by small and loose flowing particles. It is one of the important reasons for material damage in many industrial sectors. According to the statistics of British scientist Eyre, it accounts for about 8% of the total. [0003] According to the condition of the flowing medium, the erosion can be divided into solid particle erosion and liquid flow erosion, and the erosion damage of high temperature solid particles is particularly serious. Such as aeroengine blades, industrial fan blades, steam turbine blades and other rotating parts, when the blades rotate at high speed, the presence of dust, sand and industrial media particles in the airfl...

AI Technical Summary

Problems solved by technology

However, there are few test equipments currently used in erosion research, and there is no unified national standard; and there are even fewer test equipments for high-temperature solid particle erosion.

Invention patent CN201410265148 "high-temperature pressurized air flow solid particle erosion wear test device", invention patent CN201710497975 "a high-temperature high-pressure solid-containing multi-phase particle erosion wear test device" and invention patent CN201511021172 "continuous high-temperature high-speed gas-solid two-phase flow "Erosion wear test device" and other related patents disclose a solid particle erosion device respectively. Although the purpose of high-temperature test particle erosion effect can be achieved, there are the following problems: (1) high-temperature air heaters are generally used for heating , is the overall heating of the solid particles, the particles lack agitation, and the heating is uneven, which will cause the problem that the temperature of the solid particles near the heating tube is higher, while the temperature of other particles is lower

(2) Advanced instruments such as infrared velocimeters, high-speed cameras, and Doppler laser velocimeters are mostly used for speed measurement, and the equipment is more complicated and expensive

(3) The gas-solid mixing and downward movement are mainly achieved by the gravity of the particles. Due to the light weight of the particles, it is easy to cause poor downward movement, resulting in discontinuous sand output from the nozzle, or even local jamming.

(4) When the solid particle erosion test is not considered, the rebound after impacting the sample will cause secondary damage and cause a certain error in the test

(5) The sealing, noise, safety and environmental protection aspects of the erosion test are less considered

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