CN104007035A - High-temperature pressurization airflow solid particle erosive wear testing device - Google Patents

High-temperature pressurization airflow solid particle erosive wear testing device Download PDF

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Publication number
CN104007035A
CN104007035A CN201410265148.8A CN201410265148A CN104007035A CN 104007035 A CN104007035 A CN 104007035A CN 201410265148 A CN201410265148 A CN 201410265148A CN 104007035 A CN104007035 A CN 104007035A
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temperature
air
heater
solid particle
testing device
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CN201410265148.8A
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Chinese (zh)
Inventor
张洪伟
董晓慧
蔡晓君
陈曙光
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Beijing Institute of Petrochemical Technology
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Beijing Institute of Petrochemical Technology
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Priority to CN201410265148.8A priority Critical patent/CN104007035A/en
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Abstract

The invention discloses a high-temperature pressurization airflow solid particle erosive wear testing device. The high-temperature pressurization airflow solid particle erosive wear testing device comprises an air compressor, a high-temperature air heater, an electronic high-temperature control valve and an air flowmeter, wherein the air compressor, the high-temperature air heater, the electronic high-temperature control valve and the air flowmeter are connected in sequence through pipes. An air outlet pipe of the air flowmeter is connected with an upper cavity of a closed type solid particle feeder, and a discharging port pipe of the solid particle feeder stretches into a box through a solid flow regulating valve and a solid flowmeter. A specimen holder is arranged inside the box, a specimen heater is arranged on the specimen holder, an outlet of the solid flowmeter right faces the position above the specimen heater, and an infrared speed meter and a high-speed camera are arranged above the specimen heater. The high-temperature pressurization airflow solid particle erosive wear testing device can be widely applied to the field of erosive wear and suitable for high-temperature erosive wear testing of various materials.

Description

High temperature pressurised air-flow solid particle erosion abrasion testing device
Technical field
The present invention relates to a kind of erosion resistance tests equipment, relate in particular to a kind of high temperature pressurised air-flow solid particle erosion abrasion testing device.
Background technology
Erosive wear is one of wear form common during modern industry is produced, and is a major reason that causes material damage or inefficacy.In erosion process, air-flow is being carried solid particle secretly and with certain speed and angle, material surface is being carried out to erosion and cause spillage of material.In the industries such as coal, electric power, chemical industry, metallurgy, mine, oil, space flight, building, all there is a large amount of solid particle erosion wear phenomenons and cause very large harm.Wherein, the broken catalyzer powder that fuel-burning power plant coal powder boiler combustion tail gas heat exchanger pipeline, petrochemical plant high-temperature flue gas are carried secretly relates to high-temperature erosion abrasion process to cigarette aircraft turbine engine blade and relevant flow passage part etc.In addition, be operated in carry in grain air-flow piece surface prepare the erosion resistant coating of one deck be the application of current engineering at most and one of effective method.And the erosive wear resistance of coating directly has influence on the serviceable life of workpiece.Therefore, Erosion Mechanism and the failure behaviour of further investigation different materials in high velocity stream dirt, grasping erosion rule becomes urgent problem, and the raising of material erosive wear resistance need to have better, more practical means of testing and method.
At present, perfect not enough to the testing equipment of solid particle erosion abrasion research both at home and abroad, also there is no a kind of very good solid particle erosion abrasion test device.Nowadays some experimental facilitiess that generally use can not accurately be controlled the principal element (impact velocity of particle of wear process, angle of attack and impact density etc.) and the actual operating mode of simulation (for example: high temperature, high pressure, high speed and there is certain corrosive gas environment operating mode), this has just limited the scope of some experiment conditions to a certain extent.For example, vacuum falling type test unit is only suitable for doing slow-speed test (speed is generally less than 5m/s); The weak point that centrifugal abrasive particle acceleration test apparatus has speed and angle all should not accurately control; Its impact velocity of swing-arm type tester for testing scouring wear is caused by machinery rotation, controls the running of motor constant speed particularly important; Injecting type tester for testing scouring wear feed has certain difficulty and particle rapidity is measured not accurate enough.Erosion Wear Mechanisms complexity, relate to the interaction of solid particle and material, but erosion speed is not known and is changed complicated, the close together of nozzle exit end test coupon, add security reason, be difficult to observe erosion Particles Moving situation, never explain well for the velocity range of the particle in erosion process and the fret wear mechanism causing both at home and abroad at present.
Therefore, research and develop more applicable simulation actual condition, more novel solid particle erosion abrasion test device and the method for Measurement accuracy and evaluating material anti-erosion property are necessary.
Summary of the invention
The object of this invention is to provide a kind of high temperature pressurised air-flow solid particle erosion abrasion testing device, for simulating the erosion behavior impact of high temperature pressurised air-flow solids on material.
The object of the invention is to be achieved through the following technical solutions:
High temperature pressurised air-flow solid particle erosion abrasion testing device of the present invention, comprise the air compressor, high-temperature air heater, electronics high-temperature control valve, the gas meter that connect successively by pipeline, the gas outlet pipeline of described gas meter is connected with the epicoele of closed solids feeder, and the discharge opening pipeline of described solids feeder extend in casing by solid flow variable valve, solid flowmeter;
In described casing, be provided with specimen mounting, described specimen mounting is provided with sample well heater, and the outlet of described solid flowmeter is the top to described sample well heater just, and the top of described sample well heater is provided with infrared ray knotmeter, high-speed camera;
Described high-temperature air heater, gas meter, solid flowmeter, infrared ray knotmeter and high-speed camera are connected with display respectively.
As seen from the above technical solution provided by the invention, the high temperature pressurised air-flow solid particle erosion abrasion testing device that the embodiment of the present invention provides, owing to comprising the air compressor, high-temperature air heater, electronics high-temperature control valve, the gas meter that connect successively by pipeline, the gas outlet pipeline of gas meter is connected with the epicoele of closed solids feeder, and the discharge opening pipeline of solids feeder extend in casing by solid flow variable valve, solid flowmeter; In casing, be provided with specimen mounting, specimen mounting is provided with sample well heater, and the outlet of solid flowmeter is the top to sample well heater just, and the top of sample well heater is provided with infrared ray knotmeter, high-speed camera; High-temperature air heater, gas meter, solid flowmeter, infrared ray knotmeter and high-speed camera are connected with display respectively, can realize high temperature (also can low temperature or normal temperature) experiment condition, can be widely used in erosive wear field, be applicable to the high-temperature erosion abrasion test of various materials, for analyzing Erosion Wear Mechanisms and selecting anti-abrasive material that the support of scientific experiment means is provided.
Brief description of the drawings
The structural representation of the high temperature pressurised air-flow solid particle erosion abrasion testing device that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the structural representation of the specimen mounting in the embodiment of the present invention.
In figure: 1-air compressor, 2-high-temperature air heater, 3-spiral heating pipeline, 4-electronics high-temperature control valve, 5-gas meter, 6-solids feeder, 7-solid flow variable valve, 8-solid flowmeter, 9-casing, 10-specimen mounting, 11-display, 12-sand dust separator, 13-sample well heater, 14-sample, 15-infrared ray knotmeter, 16-high-speed camera, 17-index dial, 18-hold-down nut, 19-rotation slot, 20-circulating cooling device, 21-power supply.
Embodiment
To be described in further detail the embodiment of the present invention below.
High temperature pressurised air-flow solid particle erosion abrasion testing device of the present invention, its preferably embodiment be:
Comprise the air compressor, high-temperature air heater, electronics high-temperature control valve, the gas meter that connect successively by pipeline, the gas outlet pipeline of described gas meter is connected with the epicoele of closed solids feeder, and the discharge opening pipeline of described solids feeder extend in casing by solid flow variable valve, solid flowmeter;
In described casing, be provided with specimen mounting, described specimen mounting is provided with sample well heater, and the outlet of described solid flowmeter is the top to described sample well heater just, and the top of described sample well heater is provided with infrared ray knotmeter, high-speed camera;
Described high-temperature air heater, gas meter, solid flowmeter, infrared ray knotmeter and high-speed camera are connected with display respectively.
The described inner heating of high-temperature air heater pipeline section is spiral heating pipeline, described high-temperature air heater is provided with air heat temperature measurer, described sample well heater is provided with sample heating temperature measurer, and described air heat temperature measurer is connected with described display respectively with sample heating temperature measurer.
In described casing, the bottom of specimen mounting is provided with funnel, and the outside surface of described funnel is provided with circulating cooling device, and the discharge pipe of described funnel is connected with sand dust separator.
Sample is fixed on described sample well heater by sample holder, the angled index dial of a mark is set on described specimen mounting and is provided with rotation slot, and described sample well heater is located in described rotation slot, between described specimen mounting and described sample well heater, is provided with hold-down nut.
Also comprise power supply, described power supply is connected with circulating cooling device with described high-temperature air heater, sample well heater respectively by wire.
In described high-temperature air heater and sample well heater, be respectively equipped with electromagnetic induction coil, in described circulating cooling device, be provided with semiconductor chilling plate.
High temperature pressurised air-flow solid particle erosion abrasion testing device of the present invention, simple to operate, measuring accuracy is high, reproducible and can change erosive wear probe temperature, erosion speed and impact angle etc.
The present invention has overcome in existing equipment use procedure erosion environment temperature and impact angle can not be controlled, the not testable shortcoming of erosion speed, for selecting anti-abrasive material and research Erosion Wear Mechanisms that research technique support is provided.Realize high temperature (also can low temperature or normal temperature) experiment condition, can adjust impact angle, erosion speed; Can measure variation and the motion conditions of solids speed in erosion process, be provided with circulating cooling device to reduce the potential safety hazard such as instrument and people.
Can obtain the solids velocity amplitude in erosion process by technical scheme of the present invention, based on the particle speed value of test, utilize the mode of finite element analogy to analyze the erosive wear situation of specimen surface.Can be widely used in erosive wear field, be applicable to the high-temperature erosion abrasion test of various materials, for analyzing Erosion Wear Mechanisms and selecting anti-abrasive material that the support of scientific experiment means is provided.
Specific embodiment:
As depicted in figs. 1 and 2, in Fig. 1, this embodiment comprises air compressor 1, high-temperature air heater 2, casing 9, electronics high-temperature control valve 4, gas meter 5, solids feeder 6, solid flow variable valve 7, solid flowmeter 8, specimen mounting 10 and display 11.The gas that air compressor 1 produces heats through high-temperature air heater 2, high-temperature air heater 2 outlet sides are provided with electronics high-temperature control valve 4 and gas meter 5, to regulate and to show gas supply pressure, high-temperature air heater 2 outlet sides are connected with the epicoele of closed solids feeder 6.The discharging opening place of solids feeder 6 is provided with solid flow variable valve 7 and solid flowmeter 8, to control weight eroded.Solids complete erosion process in casing 9.The potpourri that the circulating cooling device 20 of casing 9 belows finishes erosion is lowered the temperature.Reclaiming what return from bucket type floor is the potpourri of solids and dust, and sand dust separator 12 is for by solids and dust separation.
The inner heating pipeline sections of above-mentioned high-temperature air heater 2 are spiral heating pipeline 3, have ensured the stable of erosion gas velocity, store enough erosion hot-airs and meet the gas consumption of erosion process.Meanwhile, high-temperature air heater 2 is provided with air heat temperature measurer, has certain design temperature, goes for various actual condition.
In Fig. 2, sample 14 is fixed on specimen mounting 10 by sample holder with sample well heater 13, is also provided with sample well heater 13 and contains sample heating temperature measurer, to meet the experiment of different temperatures on specimen mounting 10; On specimen mounting 10, arrange one and indicate angle dial 17, sample 14 and sample well heater 13 can be in rotation slot 19 according to the angular turn shown in angle dial 17 to produce the different angles of attack, and be fixed by hold-down nut 18; Infrared ray knotmeter 15 and high-speed camera 16 are contained on specimen mounting 10, be placed in respectively sample 14 both sides, to gather the velocity amplitude of solids in erosion process, and can utilize the speed of collection to carry out finite element simulation sunykatuib analysis, the erosion situation to the sample after actual erosion etc. is simulated.High-speed camera is taken whole erosion process, takes continuously the variation of analysis speed by multiframe in the unit interval.
Described display 11 is connected with solid flowmeter 8, gas meter 5, infrared ray knotmeter 14 and temperature measurer respectively by wire, conveniently on screen, observes and control each erosion parameters.
Described power supply 21 is connected with high-temperature air heater 2, sample well heater 13 and circulating cooling device 20 respectively by wire.High-temperature air heater 2 and sample well heater 13 heat air and sample by electromagnetic induction coil, in circulation temperature lowering 20 devices, are provided with semiconductor chilling plate, and when energising, cooling piece can produce low temperature.
The principle of work of the present embodiment is: utilize pressurized air that air compressor 1 produces high-temperature air heater 2 interior through electromagnetic induction heating to the temperature needing, directly pass into solids feeder 6, make the pressure in solids feeder 6 be equal to or slightly greater than the pressure in erosion gas transmission pipeline, under the promotion of high pressure, the particle of solids feeder 6 is rushed to specimen surface with pressurized air with different speed, by particle high speed impact effect within a certain period of time, carry out the erosive wear resistance of test material, casing 9 is totally-enclosed, consider based on environmental protection and operator ' s health aspect, be furnished with circulating cooling device 20 and sand dust separator 12 in casing 9 bottoms, the solids that reclaim and the potpourri of dust separate through sand dust separator 12.
The present invention, with respect to existing technology, has following advantage and effect:
The present invention is provided with solid flowmeter, gas meter, electronics high-temperature control valve and solid flow variable valve, realizes the control to pressure and solid flow, and then changes gas velocity and particle rapidity, can meet various requirement of experiment.
Adopt supercharging enclosed construction to make the pressure in solids feeder be equal to or slightly greater than the pressure in erosion gas transmission pipeline, ensured that like this solids supply is evenly smooth.
Be provided with high-temperature air heater and sample well heater, can effectively realize the erosion test under different temperatures.
Spiral type pipe in high-temperature air heater can store enough erosion hot-airs and meet the gas consumption of erosion process, has ensured the stable of erosion gas velocity.
Casing below is provided with circulating cooling device to reduce mixture temperature, reduces the impact on sand dust separator, avoids high temperature hidden danger.
Specimen mounting is provided with infrared ray knotmeter and high-speed camera, to whole experimentation take and experiments of measuring process in the impact velocity of solids.
Be the potpourri of solids and dust owing to reclaiming what return from bucket type floor, sand dust separator can be by solids and dust separation, ensures that abrasive material continues to recycle.
The above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.

Claims (6)

1. a high temperature pressurised air-flow solid particle erosion abrasion testing device, it is characterized in that, comprise the air compressor (1), high-temperature air heater (2), electronics high-temperature control valve (4), the gas meter (5) that connect successively by pipeline, the gas outlet pipeline of described gas meter (5) is connected with the epicoele of closed solids feeder (6), and the discharge opening pipeline of described solids feeder (6) extend in casing (9) by solid flow variable valve (7), solid flowmeter (8);
In described casing (9), be provided with specimen mounting (10), described specimen mounting (10) is provided with sample well heater (13), the outlet of described solid flowmeter (8) is the top to described sample well heater (13) just, and the top of described sample well heater (13) is provided with infrared ray knotmeter (15), high-speed camera (16);
Described high-temperature air heater (2), gas meter (5), solid flowmeter (8), infrared ray knotmeter (15) and high-speed camera (16) are connected with display (11) respectively.
2. high temperature pressurised air-flow solid particle erosion abrasion testing device according to claim 1, it is characterized in that, the described inner heating of high-temperature air heater (2) pipeline section is spiral heating pipeline (3), described high-temperature air heater (2) is provided with air heat temperature measurer, described sample well heater (13) is provided with sample heating temperature measurer, and described air heat temperature measurer is connected with described display (11) respectively with sample heating temperature measurer.
3. high temperature pressurised air-flow solid particle erosion abrasion testing device according to claim 2, it is characterized in that, the bottom of the interior specimen mounting of described casing (9) (10) is provided with funnel, the outside surface of described funnel is provided with circulating cooling device (20), and the discharge pipe of described funnel is connected with sand dust separator (12).
4. high temperature pressurised air-flow solid particle erosion abrasion testing device according to claim 3, it is characterized in that, sample (14) is fixed on described sample well heater (13) by sample holder, the angled index dial of one mark (17) is set on described specimen mounting (10) and is provided with rotation slot (19), described sample well heater (13) is located in described rotation slot (19), between described specimen mounting (10) and described sample well heater (13), is provided with hold-down nut (18).
5. according to the high temperature pressurised air-flow solid particle erosion abrasion testing device described in claim 1 to 4 any one, it is characterized in that, also comprise power supply (21), described power supply (21) is connected with described high-temperature air heater (2), sample well heater (13) and circulating cooling device (20) respectively by wire.
6. high temperature pressurised air-flow solid particle erosion abrasion testing device according to claim 5, it is characterized in that, in described high-temperature air heater (2) and sample well heater (13), be respectively equipped with electromagnetic induction coil, described circulating cooling device is provided with semiconductor chilling plate in (20).
CN201410265148.8A 2014-06-13 2014-06-13 High-temperature pressurization airflow solid particle erosive wear testing device Pending CN104007035A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104458467A (en) * 2014-11-10 2015-03-25 内蒙古农业大学 Wind turbine blade coating erosion and wear experiment table
CN104568631A (en) * 2015-01-21 2015-04-29 浙江理工大学 Gas-solid two-phase erosion wear testing device
CN104792639A (en) * 2015-04-08 2015-07-22 浙江理工大学 Test bed of supersonic-speed gas-solid two-phase-flow high-temperature erosion wearing testing device
CN105258919A (en) * 2015-11-24 2016-01-20 浙江工业大学 Multi-size mixed gas-solid two-phase flow experimental device
CN105628531A (en) * 2015-12-30 2016-06-01 浙江理工大学 Continuous type high-temperature and high-speed gas-solid two-phase flow erosion abrasion test device
CN109142025A (en) * 2017-06-27 2019-01-04 南京理工大学 A kind of high temperature and pressure contains solid multiphase Particle Erosion abrasion test device
CN109612863A (en) * 2018-12-12 2019-04-12 中国北方发动机研究所(天津) A kind of pressure booster blower impeller wear test verifying device
CN110987702A (en) * 2019-12-20 2020-04-10 常州大学 Experimental device and test method for simulating geothermal wellbore erosion corrosion under sand-containing condition
CN113390735A (en) * 2021-06-25 2021-09-14 东北农业大学 Prediction method for grain breakage probability under single impact load
CN113514359A (en) * 2021-06-07 2021-10-19 北京航空航天大学 Device for realizing erosion resistance test

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CN104458467A (en) * 2014-11-10 2015-03-25 内蒙古农业大学 Wind turbine blade coating erosion and wear experiment table
CN104568631A (en) * 2015-01-21 2015-04-29 浙江理工大学 Gas-solid two-phase erosion wear testing device
CN104792639B (en) * 2015-04-08 2017-09-26 浙江理工大学 The testing stand of supersonic gas fixed double phase flow high-temperature erosion abrasion experimental rig
CN104792639A (en) * 2015-04-08 2015-07-22 浙江理工大学 Test bed of supersonic-speed gas-solid two-phase-flow high-temperature erosion wearing testing device
CN105258919A (en) * 2015-11-24 2016-01-20 浙江工业大学 Multi-size mixed gas-solid two-phase flow experimental device
CN105628531B (en) * 2015-12-30 2018-07-31 浙江理工大学 Continuous high-temperature high speed Dual-Phrase Distribution of Gas olid erosion abrasion test device
CN105628531A (en) * 2015-12-30 2016-06-01 浙江理工大学 Continuous type high-temperature and high-speed gas-solid two-phase flow erosion abrasion test device
CN109142025A (en) * 2017-06-27 2019-01-04 南京理工大学 A kind of high temperature and pressure contains solid multiphase Particle Erosion abrasion test device
CN109612863A (en) * 2018-12-12 2019-04-12 中国北方发动机研究所(天津) A kind of pressure booster blower impeller wear test verifying device
CN110987702A (en) * 2019-12-20 2020-04-10 常州大学 Experimental device and test method for simulating geothermal wellbore erosion corrosion under sand-containing condition
CN110987702B (en) * 2019-12-20 2022-06-17 常州大学 Experimental device and test method for simulating geothermal wellbore erosion corrosion under sand-containing condition
CN113514359A (en) * 2021-06-07 2021-10-19 北京航空航天大学 Device for realizing erosion resistance test
CN113390735A (en) * 2021-06-25 2021-09-14 东北农业大学 Prediction method for grain breakage probability under single impact load

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