A high temperature solid particle erosion test device

Abstract

The invention discloses a high-temperature solid particle erosion test device, which relates to the technical field of material erosion wear and protection. Mainly composed of air compressor, barometer, flow control valve, solid desiccant, buffer tank, heating coil, high temperature gas storage tank, temperature controller, thermometer, mass flow meter, sand storage tank, magnetic stirrer, mixer Sand filter, acceleration tube nozzle, upper sealing test chamber, strong adsorption stick, adsorption soft brush, limit slot, workbench, lower sealing test chamber, rotary separator, particle collection box, vacuum cleaner, test It is composed of several parts such as sample clamping tester, double disc velocimeter and so on. The solid particles are stirred and heated by high-temperature gas and heated evenly, with high thermal efficiency; the speed measurement of the double-disc velocimeter avoids the secondary interference of solid particles, the equipment is simple, and the operation is convenient; the magnetic stirring device ensures the continuity of the nozzle sand production under the premise of ensuring sealing. .

Description

technical field [0001] The invention relates to an erosion test device, and relates to the technical field of material erosion and wear and protection, in particular to a high-temperature solid particle erosion and wear test device. Background technique [0002] Erosion refers to a type of wear phenomenon that occurs on the surface of a material when it is impacted by small and loose flowing particles. It is one of the important causes of material damage in many industrial sectors. 8% of the total. [0003] According to the flow medium conditions, 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 aero-engine blades, industrial fan blades, steam turbine blades and other rotating parts, when the blades rotate at a high speed, the existence of dust, sand and industrial medium particles in the airflow will cause serious erosion damage to the surface of the stain...

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 airflow 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 and wear test device" and other related patents disclose a solid particle erosion device respectively. Although the purpose of testing the effect of particle erosion at high temperature can be achieved, there are the following problems: (1) High-temperature air heaters are commonly used to heat , is the overall heating of the solid particles, the lack of agitation of the particles, and uneven heating 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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