CN106053273B - A kind of rotary hydraulic shock erosion test device - Google Patents
A kind of rotary hydraulic shock erosion test device Download PDFInfo
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- CN106053273B CN106053273B CN201610298871.5A CN201610298871A CN106053273B CN 106053273 B CN106053273 B CN 106053273B CN 201610298871 A CN201610298871 A CN 201610298871A CN 106053273 B CN106053273 B CN 106053273B
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- 230000003628 erosive effect Effects 0.000 title claims abstract description 34
- 230000035939 shock Effects 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000005303 weighing Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 10
- 238000009825 accumulation Methods 0.000 claims description 7
- 230000004580 weight loss Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims 7
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000013499 data model Methods 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 48
- 238000000034 method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Classifications
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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
-
- 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
-
- 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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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention patent relates to hydraulic shock erosion test devices, more particularly, to a kind of experimental rig for carrying out hydraulic shock erosion using rotation mode.During the test, water inlet pipe nozzle ejects the sample of hydraulic shock installation on the rotating pan, liquid is discharged by outlet pipe, rotate several samples rotation that disc spins drive rotation plate edge, sample generates impact with the liquid that water inlet pipe nozzle ejects in rotation disc spins, repeatedly periodically remove sample, cleaning, weighing, record observation sample mass situation of change, the present invention can study deformation and erosion condition of the sample under hydraulic shock, and the corrosion resistance of hydraulic shock erosion can be calculated by the data model of foundation, the parameters such as maximum erosion rate.
Description
Technical field
The invention patent relates to hydraulic shock erosion test devices, carry out liquid using rotation mode more particularly, to a kind of
The experimental rig of impact erosion.
Background technique
Hydraulic shock erosion is exactly the collision between high speed nozzle and the surface of solids, is one of corroded by liquid form.
The many components being exposed in the high velocity vapor containing water droplet are found hydraulic shock erosion, as low in large-size steam turbine
The aerodynamic surface of pressure side blade, the aircraft and guided missile that are flown in heavy rain with supersonic speed.It is also nuclear power system that hydraulic shock, which corrodes,
The emphasis of system research, Nuclear Power System are required lower quality of steam compared with conventional steam system, are made using liquid metal
For system working solution when, liquid metals can aggravate component quickly by impact erosion.Therefore, to hydraulic shock corrode prediction at
For an important project, the service life of these key components and parts has been improved.
Early stage studying hydraulic shock and corroding, a variety of materials and under the conditions of generated hydraulic shock corrode and can only lead to
Simple experiment is crossed to determine.However, due to the complexity of specimen surface interaction, the calculating of nozzle velocity and different angle
The influence of the factors such as impact, the result for often leading to experiment are not exclusively accurate.Therefore, scientists are just attempted to establish and corroded
Model and simulation liquid impact erosion environment based on sample material characteristic and some other test parameters in journey, so as to more
The erosion behavior of Accurate Prediction different materials in erosion process.
Summary of the invention
Aiming at the problem that in the presence of above-mentioned background technique, the purpose of the present invention is to provide it is a kind of using rotation mode into
The experimental rig that row hydraulic shock corrodes.
The technical solution adopted by the present invention to solve the technical problems is:
The rotary hydraulic shock erosion test device, including pedestal, cabinet, bracket and rotating disk, cabinet and branch
Frame be fixedly mounted on the base, rotating disk is mounted in cabinet, bracket be two, be located at cabinet two sides, and with rotation side surface
In parallel, rotating disk is connected and fixed on bracket by rotary shaft；Rotation plate edge is circumferentially uniformly installed several samples and is fixed
Seat, sample are fixed on rotation plate edge using sample fixing seat；Respectively symmetrically pacify in the cabinet two sides perpendicular to rotation side surface
A water inlet pipe and outlet pipe are filled, nozzle is installed on water inlet pipe；Rotating disk rotates so that being fixed on the sample of rotation plate edge
Proceeding through face nozzle beside nozzle, liquid is entered sample in fixing seat by water inlet pipe, and nozzle ejects hydraulic shock peace
The sample of dress on the rotating pan, sample generate impact, liquid with the liquid that water inlet pipe nozzle ejects in rotation disc spins
It is discharged again by outlet pipe；After the number for completing impact as needed, sample, cleaning, weighing are removed, record observation sample mass becomes
Change situation, studies deformation and erosion condition of the sample under hydraulic shock.
The test result of each sample is the erosion and time graph of an accumulation, and one time interval of every mistake stops surveying
Examination, sampling and weighing；After the number for completing impact as needed, the loss of record accumulating weight, corresponding Volume Loss and accumulation
Attack time；And to accumulate the attack time as abscissa, accumulating weight loss and corresponding Volume Loss are ordinate, draw two
Dimension curve figure；It from curve, can thus deriving analysis be come out in relation to erosion rate and erosion performance, study sample in hydraulic shock
Under deformation and erosion condition.
Further, rotating disk rotation is to drive rotating disk under motor driven by being mounted on the conveyer belt of rotary shaft one end
Rotation, and motor speed can be controlled by computer, to can control rotating.
Further, the water inlet pipe and outlet pipe pass through cabinet, the water inlet of water inlet pipe and the water outlet point of outlet pipe
It is not located parallel to the cabinet two sides of rotation side surface.
During the test, water inlet pipe nozzle ejects the sample of hydraulic shock installation on the rotating pan, and liquid is by being discharged
Pipe discharge, rotation disc spins drive rotation plate edge several samples rotation, sample with rotation disc spins in water inlet pipe
The liquid that nozzle ejects generates impact, repeatedly periodically removes sample, cleaning, weighing, record observation sample mass variation
Situation, the present invention can study deformation and erosion condition of the sample under hydraulic shock, and can be calculated by the data model of foundation
The parameters such as hydraulic shock corrodes out corrosion resistance, maximum erosion rate.
The water inlet pipe nozzle is a kind of hollow needle, can be according to specific test demand and sample size, and replacement diameter is big
The small pin hole in 0.1-5mm, and can guarantee the nozzle of the water inlet pipe diameter difference per second that can eject within 10%
Drop.
The specimen surface can be it is curved or plane, can according to test objective select specimen shape, examination
Sample can use coupon and be processed into a sheet specimens or the coating sample using standard, the peace that these samples can be convenient
It is removed in sample fixing seat and in the slave sample fixing seat that can be convenient and carries out repeated washing, weighing.
The time interval should be as short as possible, makes erosion rate time model precision with higher；For metal material,
Time interval can be calculated according to following equation.
△ t=10 (Hv)2Km/[fi(V/100)4.9]
Wherein
The estimated time interval △ t, s
HvMaterial Vickers hardness, HV
V impact velocity, m/s
fiFrequency of impact, s-1
KmHardness factor, from low-durometer material 0.3 to 3.0 range of high hardness material.
Detailed description of the invention
Fig. 1 carries out the experimental rig figure of hydraulic shock erosion using rotation mode；1- pedestal；2- cabinet；3- water inlet pipe；4-
Outlet pipe；5- sample；6- rotating disk；7- conveyer belt；, 8- nozzle；9- bracket；10- sample fixing seat.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, structure of the invention is: cabinet 2 and bracket 9 are fixedly mounted on pedestal 1, in 2 two sides pair of cabinet
Claim installation one water inlet pipe 3 and outlet pipe 4, water inlet pipe 3 and outlet pipe 4 pass through cabinet 2, the installation of rotating disk 6 and two brackets 9 it
Between, several sample fixing seats 10 are circumferentially uniformly installed at 6 edge of rotating disk, and the adjacent sample for being fixed on rotation plate edge is solid
The central angle alpha of reservation is 30 ° -90 °, and best angle is 30 °, 45 °, 60 °, 90 °；Sample 5 is fixed on using sample fixing seat 10
6 edge of rotating disk；Rotating disk 6 is driven by motor by conveyer belt 7, and the revolving speed of rotating disk 6 is controlled by computer.
During the test, water inlet pipe nozzle 8 ejects the sample 5 that hydraulic shock is mounted in rotating disk 6, and liquid is by going out
Water pipe 4 is discharged, and the rotation of rotating disk 6 drives several samples 5 rotation at 6 edge of rotating disk, and sample 5 is in the rotation of rotating disk 6
Impact is generated with the liquid that water inlet pipe nozzle 8 ejects, repeatedly periodically removes sample 5, cleaning, weighing, record observation examination
5 quality change situation of sample.When the loss of calculating accumulating weight, corresponding Volume Loss are with accumulating the attack time, and being impacted with accumulation
Between be abscissa, accumulating weight loss and corresponding Volume Loss be ordinate, draw two dimensional plot, can from this curve graph
Deformation and erosion condition of the sample under hydraulic shock are studied, and hydraulic shock erosion can be calculated by the data model of foundation
The parameters such as corrosion resistance, maximum erosion rate.
The water inlet pipe nozzle is a kind of hollow needle, can be according to specific test demand and sample size, and replacement is directly big
The small pin hole in 0.1-5mm, and can guarantee that the nozzle of the water inlet pipe a certain number of diameters difference per second that can eject exists
Drop within 10%.
5 surface of sample can be it is curved or plane, can be carried out according to test objective selection sample shape
Shape；Sample 5 can use solid bar, thin plate is process or using standard coating sample, these samples can be convenient
It is removed in the slave sample fixing seat 10 that is mounted in sample fixing seat 10 and can be convenient and carries out repeated washing, weighing.
Below by taking the testing procedure of structural material and coating as an example:
1. carrying out the preparation of sample 5 and processing according to the requirement of sample 5, preferential selection one is not carried out in the point of corrosion surface
Hardness test.For metal material, compare for convenience, we should measure its Vickers hardness number.Carefully cleaning and dry examination
Sample 5, and determine its weight, the precision of the electronic scale of weighing used should be 1mg or smaller；First clear to metal material progress
When washing, cleaned with scrub-brush or coarse cloth, it can appropriate plus some volatile solvents.
2. sample 5 is mounted in the sample fixing seat 10 of test equipment, first it is that equipment reaches stable operation speed, if
Other environmental conditions are set, water inlet pipe 3 and outlet pipe 4 is then opened, impacts liquid to sample 5 and record the time.
3. after a predetermined period of time, turning off water inlet pipe 3 and outlet pipe 4, stop liquid impacts sample 5, record
Time makes experimental rig temporarily cease work；Sample 5, carefully cleaning and drying are removed, claims its heavy on same balance before
Amount.
4. the accumulation attack time is calculated, accumulating weight loss, and corresponding cumulative volume damage can be obtained divided by density of material
It loses, the relationship of cumulative volume loss, accumulating weight loss and accumulation attack time is recorded in a test record figure.
5. repeating 2. -4. step, to accumulate the attack time as abscissa, accumulating weight loss and corresponding Volume Loss are
Ordinate draws two dimensional plot.
Claims (7)
1. a kind of test method of rotary hydraulic shock erosion test device, described device includes pedestal, cabinet, bracket and rotation
Turntable, cabinet and bracket are fixedly mounted on the base, and rotating disk is mounted in cabinet, and bracket is two, are located at cabinet two sides, and
Parallel with rotation side surface, rotating disk is connected and fixed on bracket by rotary shaft；If rotating plate edge circumferentially uniformly to install
Dry sample fixing seat, sample are fixed on rotation plate edge using sample fixing seat；In the cabinet two perpendicular to rotation side surface
A water inlet pipe and outlet pipe are respectively symmetrically installed in side, are equipped with nozzle on water inlet pipe；It is characterized by: rotating disk rotate so that
Be fixed on sample in the sample fixing seat of rotation plate edge proceeding through face nozzle beside nozzle, liquid by water inlet pipe into
Enter, nozzle ejects the sample of hydraulic shock installation on the rotating pan, and sample sprays in rotation disc spins with water inlet pipe nozzle
The liquid of injection generates impact, and liquid is discharged by outlet pipe again；After the number for completing impact as needed, sample is removed, clean,
Weighing, record observation sample mass situation of change, studies deformation and erosion condition of the sample under hydraulic shock；The sample
Test result is the erosion and time graph of an accumulation, and one time interval of every mistake stops test, sampling and weighing；According to need
After the number for completing impact, the loss of record accumulating weight, corresponding Volume Loss and accumulation attack time；And to accumulate impact
Time is abscissa, and accumulating weight loss and corresponding Volume Loss are ordinate, draws two dimensional plot；From curve, have
Thus closing erosion rate and erosion performance deriving analysis can come out, study deformation and erosion condition of the sample under hydraulic shock；
The sample is metal material, calculates time interval according to following equation:
Δ t=10 (Hv)2Km/[fi(V/100)4.9]
Wherein
The estimated time interval Δ t, s；
HvMaterial Vickers hardness, HV；
V impact velocity, m/s；
fiFrequency of impact, s-1；
KmHardness factor, from low-durometer material 0.3 to 3.0 range of high hardness material.
2. test method as described in claim 1, it is characterised in that: rotating disk rotation is the biography by being mounted on rotary shaft one end
It send band that rotating disk is driven to rotate under motor driven, and motor speed can be controlled by computer, to can control rotating disk
Revolving speed.
3. test method as described in claim 1, it is characterised in that: the water inlet pipe and outlet pipe pass through cabinet, water inlet pipe
Water inlet and outlet pipe water outlet be located at be parallel to rotation side surface cabinet two sides.
4. test method as described in claim 1, it is characterised in that: the nozzle on the water inlet pipe is a kind of hollow needle, energy
It is enough that diameter is replaced in the pin hole of 0.1-5mm according to specific test demand and sample size, and can guarantee water inlet pipe
The nozzle drop per second that can eject diameter difference within 10%.
5. test method as described in claim 1, it is characterised in that: the specimen surface is curved or plane.
6. test method as described in claim 1, it is characterised in that: select specimen shape according to test objective, sample utilizes
Coupon is processed into a sheet specimens or the coating sample using standard.
7. test method as described in claim 1, it is characterised in that: sample is mounted in sample fixing seat and can be from sample
It is removed in fixing seat and carries out repeated washing, weighing.
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| CN201610298871.5A CN106053273B (en) | 2016-05-06 | 2016-05-06 | A kind of rotary hydraulic shock erosion test device |
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| CN201610298871.5A CN106053273B (en) | 2016-05-06 | 2016-05-06 | A kind of rotary hydraulic shock erosion test device |
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| CN106053273A CN106053273A (en) | 2016-10-26 |
| CN106053273B true CN106053273B (en) | 2019-07-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106932268B (en) * | 2017-02-21 | 2019-03-01 | 西安交通大学 | Sample fixing device based on water erosion pilot system |
| 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 |
| CN111272596A (en) * | 2020-01-21 | 2020-06-12 | 兰州科润特仪器开发有限公司 | Impact, scraping and abrasion testing machine |
Citations (3)
| 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 |
| CN102621057A (en) * | 2012-03-30 | 2012-08-01 | 上海交通大学 | Method and device for testing water erosion resistance of material |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2012242221A (en) * | 2011-05-18 | 2012-12-10 | Mitsubishi Heavy Ind Ltd | Abrasion inspection device |
| TWI444616B (en) * | 2012-06-06 | 2014-07-11 | Univ Nat Taiwan Science Tech | Rotary-drum hydraulic-impact abrasion machine |
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Patent Citations (3)
| 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 |
| CN102621057A (en) * | 2012-03-30 | 2012-08-01 | 上海交通大学 | Method and device for testing water erosion resistance of material |
| 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 |
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