CN106053273A - A rotary liquid impact erosion test device - Google Patents
A rotary liquid impact erosion test device Download PDFInfo
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- CN106053273A CN106053273A CN201610298871.5A CN201610298871A CN106053273A CN 106053273 A CN106053273 A CN 106053273A CN 201610298871 A CN201610298871 A CN 201610298871A CN 106053273 A CN106053273 A CN 106053273A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- General Health & Medical Sciences (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to a liquid impact erosion test device, and particularly relates to a device for performing liquid impact erosion tests in a rotary manner. During testing, liquid ejected by water feeding pipe nozzles impacts test samples mounted on a rotary disc, the liquid is discharged by water discharging pipes, the rotary disc rotates to drive a plurality of the test samples on the edge of the rotary disc to rotate, the test samples impact with the liquid ejected by the water feeding pipe nozzles during rotation of the rotary disc, the test samples are taken down periodically for a plurality of times, cleaned and weighed, and test sample mass changes are recorded and observed. The device can research deformation and erosion of the test samples under liquid impact, and can calculate corrosion resistance, the maximum erosion rate, and other parameters of the liquid impact corrosion through an established data model.
Description
Technical field
Patent of the present invention relates to hydraulic shock erosion test device, especially relates to a kind of use rotation mode and carries out liquid
The assay device of impact erosion.
Background technology
It is exactly the collision between high speed nozzle and the surface of solids that hydraulic shock corrodes, and is the one in corroded by liquid form.
The many parts being exposed in the high velocity vapor containing water droplet are found hydraulic shock erosion, low as in large-size steam turbine
Pressure side blade, the aircraft flown in heavy rain with supersonic speed and the aerodynamic surface of guided missile.It is also nuclear power system that hydraulic shock corrodes
The emphasis of system research, Nuclear Power System requires relatively low quality of steam compared with conventional steam system, makees using liquid metal
During for the working solution of system, liquid metals can aggravate parts quickly by impact erosion.Therefore, the prediction corroded hydraulic shock becomes
It is an important problem, has improved the service life of these key components and partss.
Study of Liquid impact erosion early stage, various materials and under the conditions of produced hydraulic shock corrode and can only lead to
Cross simple experiment to determine.But, complexity, the calculating of nozzle velocity and the different angles interacted due to specimen surface
The impact of the factors such as impact, the result often leading to experiment is the most accurate.Therefore, scientists just attempts setting up corroding
Based on sample material characteristic and the model of some other test parameters and simulation liquid impact erosion environment in journey, in order to more
Accurate Prediction is the erosion behavior of different materials in erosion process.
Summary of the invention
For the problem in the presence of above-mentioned background technology, it is an object of the invention to provide a kind of use rotation mode and enter
The assay device that row hydraulic shock corrodes.
The technical solution adopted for the present invention to solve the technical problems is:
Described rotary hydraulic shock erosion test device, including pedestal, casing, support and rotating disk, casing with
Frame is fixedly mounted on pedestal, and rotating disk is arranged in casing, and support is two, is positioned at casing both sides, and with rotating disk end face
Parallel, rotating disk is connected and fixed on support by rotary shaft；Rotating disk edge is the most uniformly installed several samples and is fixed
Seat, sample utilizes sample to fix seat to be fixed on rotating disk edge；It is respectively symmetrically peace in the casing both sides being perpendicular to rotating disk end face
Fill a water inlet pipe and outlet pipe, water inlet pipe is provided with nozzle；Rotating disk rotates and makes to be fixed on the sample at rotating disk edge
Sample on fixing seat is proceeding through nozzle side just to nozzle, and liquid is entered by water inlet pipe, and nozzle ejects hydraulic shock peace
Dress sample on the rotating pan, the liquid that sample ejects with water inlet pipe nozzle in rotating with rotating disk produces impact, liquid
Discharged by outlet pipe again；After completing the number of times of impact as required, taking off sample, clean, weigh, record is observed sample mass and is become
Change situation, studies sample deformation under hydraulic shock and erosion condition.
The result of the test of each sample is erosion and the time graph of an accumulation, often crosses a time interval and stops surveying
Examination, samples and weighs；After completing the number of times of impact as required, record accumulating weight loss, corresponding Volume Loss and accumulation
Attack time；And with the accumulation attack time as abscissa, accumulating weight loss and corresponding Volume Loss are vertical coordinate, draw two
Dimension curve figure；From curve, thus out, sample can be studied at hydraulic shock by deriving analysis about erosion rate and erosion performance
Under deformation and erosion condition.
Further, rotating disk rotates is that the conveyer belt by being arranged on rotary shaft one end is rotated dish under motor drives
Rotate, and motor speed can be controlled by computer, it is thus possible to control rotating.
Further, described water inlet pipe and outlet pipe are through casing, and the water inlet of water inlet pipe and the outlet of outlet pipe divide
It is not located parallel to the casing both sides of rotating disk end face.
In test process, water inlet pipe nozzle ejects hydraulic shock installs sample on the rotating pan, and liquid is by water outlet
Bank of tubes goes out, rotating disk rotarily drive rotating disk edge several samples rotate, sample with rotating disk rotate in water inlet pipe
The liquid that nozzle ejects produces impact, the most periodically takes off sample, cleans, weighs, and sample mass change observed in record
Situation, the present invention can be studied sample deformation under hydraulic shock and erosion condition, and can be calculated by the data model set up
Go out the parameters such as the corrosion resistance of hydraulic shock erosion, maximum erosion rate.
Described water inlet pipe nozzle is a kind of hollow needle, it is possible to according to concrete test demand and sample size, change diameter big
The little pin hole at 0.1-5mm, and ensure that the nozzle of the water inlet pipe different diameters that can eject per second is within 10%
Drop.
Described specimen surface can be bending or plane, can select specimen shape, examination according to test objective
Sample can utilize coupon to be processed into a sheet specimens or the coating sample of the standard of use, and these samples can be pacified easily
It is contained in sample to fix on seat and can fix from sample easily to take off seat and carry out repeated washing, weigh.
Described time interval should be the shortest, makes erosion rate time model have higher precision；For metal material,
Time interval can be calculated according to below equation.
△ t=10 (Hv)2Km/[fi(V/100)4.9]
Wherein
The △ t estimated time is spaced, s
HvMaterial Vickers hardness, HV
V impact velocity, m/s
fiFrequency of impact, s-1
KmHardness factor, from low-durometer material 0.3 to high hardness material 3.0 scope.
Accompanying drawing explanation
Fig. 1 uses rotation mode to carry out the assay device figure of hydraulic shock erosion；1-pedestal；2-casing；3-water inlet pipe；4-
Outlet pipe；5-sample；6-rotating disk；7-conveyer belt；, 8-nozzle；9-support；Seat fixed by 10-sample.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, the structure of the present invention is: casing 2 and support 9 are fixedly mounted on pedestal 1, in casing 2 both sides pair
Claim to install a water inlet pipe 3 and outlet pipe 4, water inlet pipe 3 and outlet pipe 4 through casing 2, rotating disk 6 install with two supports 9 it
Between, rotating disk 6 edge is the most uniformly installed several samples and is fixed seat 10, and the adjacent sample being fixed on rotating disk edge is solid
The central angle alpha of reservation is 30 °-90 °, and best angle is 30 °, 45 °, 60 °, 90 °；Sample 5 utilizes sample to fix seat 10 and is fixed on
Rotating disk 6 edge；Rotating disk 6 is driven by conveyer belt 7 by motor, and is controlled the rotating speed of rotating disk 6 by computer.
In test process, water inlet pipe nozzle 8 ejects the sample 5 that hydraulic shock is arranged in rotating disk 6, and liquid is by going out
Water pipe 4 is discharged, and rotating disk 6 rotarily drives several samples 5 at rotating disk 6 edge and rotates, and sample 5 is in rotating with rotating disk 6
The liquid ejected with water inlet pipe nozzle 8 produces impact, the most periodically takes off sample 5, cleans, weighs, and examination observed in record
Sample 5 mass change situation.Calculate accumulating weight loss, corresponding Volume Loss and accumulation attack time, and during with accumulation impact
Between be abscissa, accumulating weight loss and corresponding Volume Loss be vertical coordinate, draw two dimensional plot, can from this curve chart
Study sample deformation under hydraulic shock and erosion condition, and hydraulic shock erosion can be calculated by the data model set up
Corrosion resistance, the parameter such as maximum erosion rate.
Described water inlet pipe nozzle is a kind of hollow needle, it is possible to according to concrete test demand and sample size, changes the biggest
The little pin hole at 0.1-5mm, and ensure that the nozzle of water inlet pipe is per second and can eject a number of different diameters and exist
Drop within 10%.
Described sample 5 surface can be bending or plane, can carry out selecting sample shape according to test objective
Shape；Sample 5 can utilize solid bar, thin plate to process or use the coating sample of standard, and these samples can be convenient
It is arranged on sample to fix on seat 10 and can fix from sample easily to take off seat 10 and carry out repeated washing, weigh.
Below as a example by the testing procedure of structural material and coating:
1. carrying out sample 5 according to the requirement of sample 5 prepare and process, prioritizing selection one is not carried out at the point of corrosion surface
Hardness test.For metal material, comparing for convenience, we should measure its Vickers hardness number.Carefully clean and be dried examination
Sample 5, and determine its weight, used by the precision of electronic scale weighed should be 1mg or less；Metal material is being carried out the most clearly
When washing, clean with scrub-brush or coarse cloth, can be suitable add some volatile solvents.
The sample that 2. sample 5 is arranged on test equipment is fixed on seat 10, is first that equipment reaches stable operation speed, if
Put other environmental conditions, then open water inlet pipe 3 and outlet pipe 4, make liquid sample 5 be impacted and record the time.
The most after a predetermined period of time, turning off water inlet pipe 3 and outlet pipe 4, sample 5 is impacted by stop liquid, record
Time, assay device is made to temporarily cease work；Take off sample 5, carefully cleaning and be dried, the most same balance claims it heavy
Amount.
4. calculating the accumulation attack time, accumulating weight loses, and can be divided by density of material, it is thus achieved that corresponding cumulative volume damages
Lose, record a test and figure records cumulative volume loss, accumulating weight loss and the relation accumulating the attack time.
5. repeating 2.-4. step, to accumulate the attack time as abscissa, accumulating weight loss and corresponding Volume Loss are
Vertical coordinate, draws two dimensional plot.
Claims (7)
1. a rotary hydraulic shock erosion test device, it is characterised in that: described device include pedestal, casing, support and
Rotating disk, casing and support are fixedly mounted on pedestal, and rotating disk is arranged in casing, and support is two, is positioned at casing both sides,
And parallel with rotating disk end face, rotating disk is connected and fixed on support by rotary shaft；Rotating disk edge is the most uniformly installed
Seat fixed by several samples, and sample utilizes sample to fix seat to be fixed on rotating disk edge；At the casing being perpendicular to rotating disk end face
Both sides are respectively symmetrically one water inlet pipe of installation and outlet pipe, and water inlet pipe is provided with nozzle；Rotating disk rotates and makes to be fixed on rotation
The sample of disk edge fixes the sample on seat proceeding through nozzle side just to nozzle, and liquid is entered by water inlet pipe, and nozzle sprays
Sample on the rotating pan is installed in liquid jet impact, the liquid that sample ejects with water inlet pipe nozzle in rotating with rotating disk
Producing impact, liquid is discharged by outlet pipe again；After completing the number of times of impact as required, take off sample, clean, weigh, record
Observe sample mass situation of change, study sample deformation under hydraulic shock and erosion condition.
A kind of rotary hydraulic shock erosion test device the most as claimed in claim 1, it is characterised in that: the examination of described sample
Test erosion and time graph that result is an accumulation, often cross a time interval and stop test, sample and weigh；As required
After completing the number of times of impact, record accumulating weight loss, corresponding Volume Loss and accumulation attack time；And during with accumulation impact
Between be abscissa, accumulating weight loss and corresponding Volume Loss be vertical coordinate, draw two dimensional plot；From curve, relevant
Erosion rate and erosion performance thus out, can study sample deformation under hydraulic shock and erosion condition by deriving analysis.
A kind of rotary hydraulic shock erosion test device the most as claimed in claim 2, it is characterised in that sample is metal material
Material, calculates time interval according to below equation:
△ t=10 (Hv)2Km/[fi(V/100)4 . 9]
Wherein
The △ t estimated time is spaced, s；
HvMaterial Vickers hardness, HV；
V impact velocity, m/s；
fiFrequency of impact, s-1；
KmHardness factor, from low-durometer material 0.3 to high hardness material 3.0 scope.
A kind of rotary hydraulic shock erosion test device the most as claimed in claim 1, it is characterised in that: rotating disk rotates and is
Under motor drives, dish is rotated by the conveyer belt being arranged on rotary shaft one end to rotate, and motor can be controlled by computer
Rotating speed, it is thus possible to control rotating.
A kind of rotary hydraulic shock erosion test device the most as claimed in claim 1, it is characterised in that: described water inlet pipe with
Outlet pipe passes casing, and the water inlet of water inlet pipe and the outlet of outlet pipe lay respectively at the casing two being parallel to rotating disk end face
Side.
A kind of rotary hydraulic shock erosion test device the most as claimed in claim 1, it is characterised in that: on described water inlet pipe
Nozzle be a kind of hollow needle, it is possible to according to concrete test demand and sample size, change the diameter pin at 0.1-5mm
Hole, and ensure that the nozzle of water inlet pipe is per second and can eject different diameters drop within 10%.
A kind of rotary hydraulic shock erosion test device the most as claimed in claim 1, it is characterised in that: described specimen surface
Can be bending or plane, can select specimen shape according to test objective, sample can utilize coupon to process
Become a sheet specimens or the coating sample of the standard of use, these samples can be conveniently installed at sample fix on seat and
Can fix from sample easily to take off seat and carry out repeated washing, weigh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610298871.5A CN106053273B (en) | 2016-05-06 | 2016-05-06 | A kind of rotary hydraulic shock erosion test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610298871.5A CN106053273B (en) | 2016-05-06 | 2016-05-06 | A kind of rotary hydraulic shock erosion test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106053273A true CN106053273A (en) | 2016-10-26 |
| CN106053273B CN106053273B (en) | 2019-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610298871.5A Active CN106053273B (en) | 2016-05-06 | 2016-05-06 | A kind of rotary hydraulic shock erosion test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932268A (en) * | 2017-02-21 | 2017-07-07 | 西安交通大学 | Sample based on water erosion pilot system is fixed and arrangement |
| CN106950134A (en) * | 2017-02-27 | 2017-07-14 | 西安交通大学 | A kind of utilization high-speed jet produces the testpieces structure of high speed drop |
| CN107063907A (en) * | 2017-03-31 | 2017-08-18 | 浙江理工大学 | A kind of experimental rig for being used to measure the abrasion of solid-liquid two-phase |
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| JP4247799B1 (en) * | 2008-05-19 | 2009-04-02 | スガ試験機株式会社 | Salt spray tester with rotation control device |
| CN102621057A (en) * | 2012-03-30 | 2012-08-01 | 上海交通大学 | Method and device for testing water erosion resistance of material |
| JP2012242221A (en) * | 2011-05-18 | 2012-12-10 | Mitsubishi Heavy Ind Ltd | Abrasion inspection device |
| CN103196765A (en) * | 2013-03-11 | 2013-07-10 | 北京矿冶研究总院 | Multifunctional high-temperature high-speed friction and wear testing machine and method |
| US20130327120A1 (en) * | 2012-06-06 | 2013-12-12 | National Taiwan University Of Science And Technology | Rotary-Drum Hydraulic-Impact Abrasion Testing Machine |
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2016
- 2016-05-06 CN CN201610298871.5A patent/CN106053273B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4247799B1 (en) * | 2008-05-19 | 2009-04-02 | スガ試験機株式会社 | Salt spray tester with rotation control device |
| JP2012242221A (en) * | 2011-05-18 | 2012-12-10 | Mitsubishi Heavy Ind Ltd | Abrasion inspection device |
| CN102621057A (en) * | 2012-03-30 | 2012-08-01 | 上海交通大学 | Method and device for testing water erosion resistance of material |
| US20130327120A1 (en) * | 2012-06-06 | 2013-12-12 | National Taiwan University Of Science And Technology | Rotary-Drum Hydraulic-Impact Abrasion Testing Machine |
| CN103196765A (en) * | 2013-03-11 | 2013-07-10 | 北京矿冶研究总院 | Multifunctional high-temperature high-speed friction and wear testing machine and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932268A (en) * | 2017-02-21 | 2017-07-07 | 西安交通大学 | Sample based on water erosion pilot system is fixed and arrangement |
| CN106950134A (en) * | 2017-02-27 | 2017-07-14 | 西安交通大学 | A kind of utilization high-speed jet produces the testpieces structure of high speed drop |
| CN106950134B (en) * | 2017-02-27 | 2019-10-11 | 西安交通大学 | A kind of testpieces structure generating high speed drop using high-speed jet |
| CN107063907A (en) * | 2017-03-31 | 2017-08-18 | 浙江理工大学 | A kind of experimental rig for being used to measure the abrasion of solid-liquid two-phase |
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| Publication number | Publication date |
|---|---|
| CN106053273B (en) | 2019-07-26 |
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