CN106483033A - 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid based on different flow directions - Google Patents
90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid based on different flow directions Download PDFInfo
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- 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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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a kind of 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid based on different flow directions, belong to gas-particle two-phase erosion test technical field, including air blast, sand tank and electronic plus sand device, flow control valve, temperature transmitter, pressure transmitter, flow transmitter, computer, straight length, recovery line, 5 test elbows；Air blast connects straight length, is sequentially installed with flow control valve, temperature transmitter, pressure transmitter, flow transmitter on straight length, then installs electronic plus sand device, electronic plus sand device connection sand tank above straight length tube wall；5 test elbows are sequentially connected on straight length, then sand tank are connected back to by recovery line.The bottom horizontal flow sheet of 90 ° of elbows that the present invention can include to gas field gathering system in process of the test upwards, bottom horizontal flow sheet downwards, bottom horizontal flow sheet flows to level and flows to level straight down and study, and realize uninterrupted continuous cyclic test to level, straight up.
Description
Technical field
The present invention relates to gas-particle two-phase erosion test technical field, and in particular to a kind of gas-particle two-phase based on different flow directions
90 ° of elbow erosion circuit experimental provisions of stream.
Background technology
At present, in natural gas transportation, it is main mode that pipeline collection is defeated, during gas gathering and transportation, adopts from gas reservoir
Natural gas after going out often bearing both solid particulates (landwaste, gravel etc.), has serious erosion harm, such as gas to gathering line
Bored shaft is taken sand air-flow erosion drilling tool and causes drill rod breaking, gas transmission pipeline elbow erosion perforation rupture, sediment outflow pipeline reducing
Section erosion failure etc..Therefore, the emphasis that sand air-flow is always people's research to the erosion rate of pipeline, equipment is taken, stream in pipeline
Dynamic process is typical Dual-Phrase Distribution of Gas olid, and in elbow flow field, geometry mutation, causes the gas such as pressure, the velocity in flow field
Dynamic parameter is all undergone mutation, and entrained solid impacts elbow wall therewith, produces erosive wear phenomenon, causes elbow to wear after deterioration
Hole etc. is endangered.Erosive wear rule and mechanism of the solid particle to elbow are taken by researching natural gas, so as to control the wall of elbow
Thick loss, suppresses the generation of erosion perforation, reduces the production accident that erosive wear is caused.
Chinese scholars initially enter fast-developing period, scholar to the research of wear phenomenon from nineteen sixties
Have studied the impact of many factors On Erosion result such as the angle of attack, impact velocity, particle and target physical property；Scholars
Propose multiple mechanism to explain the erosive wear phenomenon under different operating modes.In the last thirty years, crowd has built in external Duo Suo colleges and universities
Many gas tests runner is engaged in the erosive wear research of gas-solid multiphase flow, and holds high due to building Dual-Phrase Distribution of Gas olid experimental provision expense
Expensive.Erosive wear for 90 ° of elbows is studied, and current major part domestic scholars are generally by the way of Computer Simulation, but meter
During calculation, mesh quality, material calculation, degree of convergence, coupled wave equation accuracy etc. all have impact on the prediction knot of erosive wear amount
Really, it is difficult to suitable for field working conditions, need binding tests to verify and further investigate.And in being tested using experimental provision, specially
Profit number European patent discloses a kind of anticorrosive bend pipe for EP84101397.2's, and its specification is lacked to its test mode
Amount is described, but which mainly uses single liquid and carries out erosion test, and the China of Patent No. CN200710067815.1 is specially
Profit discloses a kind of loop-type multi-phase flow experimental provision, but this device is mainly used in testing multi-phase flow erosion, is still with liquid
Body is main study subject.
The gas erosion device for existing both at home and abroad at present mostly adopts single Erosion Method, such as Patent No.
The Chinese patent of CN201620086144.8, its can only be tested for the single pipeline that flows within the unit interval, change other
Need to dismantle experimental provision when angle pipeline, increase test period and plant machinery abrasion.Prior art does not temporarily also go out
It is now able to high degree and field working conditions on physical dimension, aerodynamic parameter and particle parameter to agree with, reflect actual condition, and energy
While carrying out the Dual-Phrase Distribution of Gas olid elbow experimental provision of multigroup different flow direction tests.Therefore, a set of experimental provision of design research and development, right
Research in terms of Dual-Phrase Distribution of Gas olid elbow Erosion Mechanism has important theory value and engineering significance.
Content of the invention
For the problems referred to above, the present invention provides a set of 90 ° of elbow erosion experiment dresses of Dual-Phrase Distribution of Gas olid based on different flow directions
Put, all flow directions of the 90 ° of elbows that gas field gathering system can be included in process of the test (bottom horizontal flow sheet upwards, bottom horizontal flow sheet to
Under, bottom horizontal flow sheet flows to level and flows to level straight down to level, straight up) studied, can be uninterrupted
Continuous cyclic test, and real time record test data in process of the test.
For achieving the above object, the present invention takes technical scheme below：
Based on 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid of different flow directions, including loading system, monitoring system
System, sample system, the filling part include air blast, sand tank and electronic plus sand device；The monitoring system includes that flow is adjusted
Section valve, temperature transmitter, pressure transmitter, flow transmitter, computer；The sample system includes to test elbow, straight length
And recovery line, test elbow and elbow, 2# test elbow, 3# test elbow, 4# test elbow, 5# test elbow group are tested by 1#
Become；The air blast connects straight length, is sequentially installed with flow control valve, temperature transmitter, pressure transmitter, stream on straight length
Transmitter, then installs electronic plus sand device, electronic plus sand device connection sand tank above straight length tube wall；On the straight length
1# test elbow, 2# test elbow, 3# test elbow, 4# test elbow, 5# test elbow is sequentially connected, then passes through recovery tube
Line connects back to sand tank；The flow control valve, temperature transmitter, pressure transmitter, flow transmitter and air blast, electronic plus
Sand device is all connected to computer.
Further, the 1# test elbow and 2# test elbow are connected up for level, 2# test elbow and 3# are tested
Elbow connects for vertical left, 3# test elbow and 4# test elbow are curved for vertical connection forward, 4# test elbow and 5# test
Head connects for level to the right.
Further, the interior diameter of the straight length and test elbow is 150mm, wall thickness 3mm, and material is Q235 low-carbon (LC)
Steel pipe.
Further, the sand tank is steel drum, diameter 800mm, height 1000mm, and internal reservoir test solid phase is situated between
Matter；Upper end is shrouded by screen cloth, and lower end is designed as tapering type structure, and is provided with knockout control valve in lower section.
Further, the screen cloth is 110 mesh.
Further, the straight length and test elbow be connected by form of flanges, and rubber sheet gasket is set.
Present invention additionally comprises a kind of 90 ° of elbow erosion circuit experimental techniques of Dual-Phrase Distribution of Gas olid based on different flow directions, step
As follows：
S1, first startup air blast, the gas phase after acceleration flow successively through flow control valve, temperature by straight length and become
Device, pressure transmitter, flow transmitter is sent, computer is in stipulated time point from flow control valve, temperature transmitter, pressure inverting
Device, flow transmitter are collected data and are stored；
S2, judge that by computer data acquisition gas phase flow field is stable after, open electronic plus sand device, the solid in sand tank
Particle enters straight length through knockout control valve, and then solid particle mixes to form turbulent flow as second with gas phase, group
Become Dual-Phrase Distribution of Gas olid；
S3, using Dual-Phrase Distribution of Gas olid to test elbow carry out erosive wear experiment：
S3.1, gas-particle two-phase flow through straight length and flow into 1# test elbow, and baffling upwards, tests elbow with 1# from horizontal direction
Tube wall collision produces erosive wear, is then departed from 1# test elbow, impacts the erosive wear of 90 ° of bend pipes with this testing level upwards
Situation；
S3.2, the Dual-Phrase Distribution of Gas olid that flows out from 1# test elbow enter vertical straight length, again fully-develop turbulent flow, gas-solid
Two phase flow flows to horizontal impact 2# test elbow straight up, is then departed from 2# test elbow, is tested with this and turn vertically upward
The erosive wear situation of 90 ° of bend pipes of horizontal impact；
S3.3, the Dual-Phrase Distribution of Gas olid that flows out from 2# test elbow enter horizontal straight tube section, again fully-develop turbulent flow, gas-solid
Two-phase flow horizontal flows to vertically impact 3# test elbow to the left, is then departed from 3# test elbow, with this testing level to undershoot
Hit the erosive wear situation of 90 ° of bend pipes；
S3.4, the Dual-Phrase Distribution of Gas olid that flows out from 3# test elbow enter straight length, again fully-develop turbulent flow, gas-particle two-phase
Stream flows to horizontal impact 4# test elbow straight up, is then departed from 3# test elbow, is tested vertically downward with this and turn level
The erosive wear situation of 90 ° of bend pipes of impact；
S3.5, the Dual-Phrase Distribution of Gas olid that flows out from 4# test elbow enter straight length, again fully-develop turbulent flow, gas-particle two-phase
Stream flows to horizontal impact 5# test elbow straight up, is then departed from 3# test elbow, with this testing level right-angle steering punching
Hit the erosive wear situation of 90 ° of bend pipes；
S3.6, the Dual-Phrase Distribution of Gas olid that flows out from 5# test elbow enter recovery line, and then flowing into sand tank carries out gas-solid
Separation and recovery sand grains, forms closed circuit, is put in experiment again, until experiment terminates.
Further, in step S3.2～S3.5, the gas leave test elbow after, pushing away in subsequent fluid
Under dynamic, its kinetic energy rejection is supplemented, and speed identical with initial velocity can be kept to continue the next test elbow of impact, it is ensured that erosion
Wear test speed parameter is identical.
Whole experimental provision provides flow circuit loop by pipeline and sand tank for Dual-Phrase Distribution of Gas olid, and energy supplying system provides stream
Power, plus sand system mixing solid phase, elbow are combined constantly with turbulent fully development straight length and change Dual-Phrase Distribution of Gas olid incidence
Direction is realizing test objective.And Flux Valve Control gas flow is installed, the knockout control valve control of sand tank bottom is single
Erosion grain amount in the time of position, temperature transmitter, pressure transmitter, flow transmitter coupled computer terminal collect storage number
According to.Test elbow is all connected with form of flanges with straight length realizes flexible disassembling function.
It is an advantage of the invention that：
(1) present invention encompasses the flow direction of all 90 ° of elbows being likely to occur in gas collector and delivery pipe system, is testing
The internal solid phase particles of elbow are subject to the collective effect of gas drag and gravity, can further investigate under the effect of different gravity directions
Erosion Mechanism；
(2) this experimental provision defines closed circuit, and gravel can be to carry out washing away mill to testing elbow after recovered again
Damage, and gas can be separated by 110 eye mesh screens and is vented；Recovery system makes the air vane in experimental provision without air blast
Wheel, flow control valve, each parameter transmitter are not exposed to the infringement of grits wear；
(3) experiment can be entirely by reference to defeated flow velocity be managed, while selecting the common physical form size of simulated natural gas line
Gravel, more real simulated field situation；
(4) electronic favourable turn using 220V exchange input, under resident's electric power system just can operating operation test, reduce experiment condition
Threshold；
(6) in addition to gas-particle two-phase washes away elbow and tests, this device can also carry out the examination such as pipeline coating fluid erosion prevention ability
Test, function is changeable, utilization ratio is high；
(7) all parts of test track are all detachable, are easy to observation to add up level, vertical direction under effect in long-time and receive
Gravel erosive wear situation；And newly added equipment facility can be needed according to function, use with flexible, sustainability expanded function
Characteristic.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of another angle of the present invention；
Shown in figure：1st, air blast；2nd, straight length；3rd, flow control valve；4th, temperature transmitter；5th, pressure transmitter；6、
Flow transmitter；7th, electronic plus sand device；8th, sand tank；9th, knockout control valve；10th, screen cloth；11st, 1# test elbow；12nd, 2# test
Elbow；13rd, 3# test elbow；14th, 4# test elbow；15th, 5# test elbow；16th, recovery line.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As shown in Fig. 1～Fig. 2, based on 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid of different flow directions, including adding
Injection system, monitoring system, sample system, the filling part include air blast 1, sand tank 8 and electronic plus sand device 7；The prison
Examining system includes flow control valve 3, temperature transmitter 4, pressure transmitter 5, flow transmitter 6, computer (in figure is not drawn into)；
The sample system includes to test elbow, straight length 2 and recovery line 16, and test elbow is curved by 1# test elbow 11,2# test
12,3# test elbow 13,4# test elbow 14,5# test elbow 15 constitutes；The air blast 1 connects straight length 2, straight length
Flow control valve 3, temperature transmitter 4, pressure transmitter 5, flow transmitter 6 is sequentially installed with 2, is then managed in straight length 2
Electronic plus sand device 7 is installed above wall, electronic plus sand device 7 connects sand tank 8；1# test elbow is sequentially connected on the straight length 2
11st, 2# test elbow 12,3# test elbow 13,4# test elbow 14,5# test elbow 15, wherein 1# test elbow 11 and 2# examination
Test elbow 12 connect up for level, 2# test elbow 12 and 3# test elbow 13 be vertical left connection, 3# test elbow 13
Elbow 14 is tested with 4# to connect for level to the right for vertical connection forward, 4# test elbow 14 and 5# test elbow 15, Ran Houtong
Cross recovery line 16 and sand tank 8 is connected back to, straight length 2 is connected by form of flanges with test elbow, and arranges rubber sheet gasket；
The flow control valve 3, temperature transmitter 4, pressure transmitter 5, flow transmitter 6 and air blast 1, electronic plus sand device 7 all connect
It is connected to computer.
The interior diameter of the straight length 2 and test elbow is 150mm, wall thickness 3mm, and material is Q235 low carbon steel pipe；Institute
Sand tank 8 is stated for steel drum, diameter 800mm, height 1000mm, internal reservoir test solid-phase media；Upper end is by 110 eye mesh screens
10 shroud, and lower end is designed as tapering type structure, and is provided with knockout control valve 9 in lower section.
The test elbow internal diameter selects DN150mm size, be by the literature survey size in gas field gathering line system
Apply relatively broad in system, have as experimental subjects using which and solve the problems, such as the positive effect of Practical Project.
The test elbow specification is 90 ° standard elbow bends of the curved footpath than R/D=1.5.
On experimental provision, for ease of support effect, test on elbow and sand tank 8, auxiliary stand can be set up.
Directly parameter can be tested using gas field scene flow velocity in process of the test；Gravel mass flow, geometry corner angle, chi
The physicochemical properties such as very little, hardness, density can carry out solving the test of specific engineering problem using gas field actual parameter, and screening is special
The gravel for determining mesh number carries out pure research, it is ensured that experiment meets field condition.This research object adopts the gravel of 100 mesh,
Therefore using the screen cloth 10 of 110 mesh, it is ensured that gravel will not overflow sand tank 8.
Motor and interior impeller are provided with electronic plus sand device 7, motor is provided with specified gear, by selecting adjustment shelves
Position, the gaza's speed that comes in Control release.
Air blast 1 is provided with corresponding motor, and motor adopts 220V rated voltage rotor electric machine, is that air blast provides energy
Amount, produces 1.00m/s～50.00m/s, the air-flow higher than locality atmospheric pressure 1.4kPa.
Based on 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid of different flow directions, its laboratory operating procedures is as follows：
, using front, gas flow regulating valve 3 is normally opened, and knockout control valve 9 is normally closed, starts first electronic during experiment for this device
Machine drives blower fan, checks whole pipeline air-tightness, adjusts flow control valve 3, reads data on computers and obtains given flow rate,
Then ensure that flow control valve 3 is stable, after gas phase main flow field is stable, motor is opened, driving electric adds sand device 7, is then turned on
Sand control valve 9, controls gravel discharge, and during experiment is carried out, knockout control valve 9 is in normally open, and experiment falls after terminating
Sand control valve 9 is closed；Motor in electronic plus sand device 7 drives interior impeller rotation, solid phase is blown downwards and is mixed
Gas phase is incorporated into, then gas-solid mixture is formed, proceeds by the scouring experiment to elbow；
Gas-particle two-phase flows through straight length 2 and flows into 1# test elbow 11, and baffling upwards, tests elbow 11 with 1# from horizontal direction
Tube wall collision produces erosive wear, is then departed from 1# test elbow 11, impacts the erosion mill of 90 ° of bend pipes with this testing level upwards
Damage situation；Then 2# test elbow 12,3# test elbow 13,4# test elbow 14,5# test elbow 15 is passed sequentially through, carries out water
Flat impact downwards, turn horizontal impact, level vertically upward and impact downwards, turn horizontal impact, level right angle vertically downward and turn to etc. 5
Plant impact experiment；Dual-Phrase Distribution of Gas olid after single-impact is complete flows into sand tank 8 by recovery line 16, and gas passes through 110 mesh sieves
Net 10 is emptied, and gravel participates in experiment again, realizes recycling；
Experiment is first shut off knockout control valve 9 when closing to an end, and secondly closes motor, waits gas phase thoroughly to carry pipeline
Interior solid enters sand tank 8, closes motor；Then all test elbows under detachable, carry out wall thickness measuring and are post-processed
Deng data analysis.
In above-mentioned steps, if in bulky grain gravel laboratory, grit impact damage is more, can be in 8 side of sand tank
Arrange plus sandpipe line, carry out according to demand in test plus sand operation, it is ensured that the continuity of experimental provision.
The above, is only presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any is familiar with this professional technology people
Member, in the range of without departing from technical solution of the present invention, when the technology contents using the disclosure above make a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit of the foundation present invention
Any simple modification, equivalent variations and the modification made by above example, all still falls within the range of technical solution of the present invention.
Claims (8)
1. 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid based on different flow directions, including loading system, monitoring system,
Sample system, the filling part include air blast, sand tank and electronic plus sand device；The monitoring system includes Flow-rate adjustment
Valve, temperature transmitter, pressure transmitter, flow transmitter, computer, the sample system include test elbow, straight length and
Recovery line, it is characterised in that the test elbow by 1# test elbow, 2# test elbow, 3# test elbow, 4# test curved
Head, 5# test elbow composition；The air blast connects straight length, is sequentially installed with flow control valve, temperature pick-up on straight length
Device, pressure transmitter, flow transmitter, then install electronic plus sand device, the connection storage of electronic plus sand device above straight length tube wall
Silo；Be sequentially connected on the straight length 1# test elbow, 2# test elbow, 3# test elbow, 4# test elbow, 5# test curved
Head, then connects back to sand tank by recovery line；The flow control valve, temperature transmitter, pressure transmitter, flow pick-up
Device and air blast, electronic plus sand device are all connected to computer.
2. according to claim 1 based on different 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid for flowing to, which is special
Levy and be, the 1# tests elbow and 2# test elbow is connected up for level, 2# test elbow and 3# test elbow are vertical
Connection to the left, 3# test elbow and 4# test elbow are vertical connection forward, 4# test elbow and 5# test elbow be level to
Right connection.
3. according to claim 2 based on different 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid for flowing to, which is special
Levy and be, the interior diameter of the straight length and test elbow is 150mm, wall thickness 3mm, and material is Q235 low carbon steel pipe.
4. according to claim 1 based on different 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid for flowing to, which is special
Levy and be, the sand tank is steel drum, diameter 800mm, height 1000mm, internal reservoir test solid-phase media；Upper end by
Screen cloth shrouds, and lower end is designed as tapering type structure, and is provided with knockout control valve in lower section.
5. according to claim 4 based on different 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid for flowing to, which is special
Levy and be, the screen cloth is 110 mesh.
6. according to claim 3 based on different 90 ° of elbow erosion circuit experimental provisions of Dual-Phrase Distribution of Gas olid for flowing to, which is special
Levy and be, the straight length is connected by form of flanges with test elbow, and arranges rubber sheet gasket.
7. 90 ° of elbow erosion circuits of Dual-Phrase Distribution of Gas olid based on different flow directions according to any one in claim 1～6
Experimental provision, it is characterised in that the present invention also provides a kind of 90 ° of elbow erosion circuit realities of Dual-Phrase Distribution of Gas olid based on different flow directions
Proved recipe method, step are as follows：
S1, first startup air blast, the gas phase after acceleration flow successively through flow control valve, temperature pick-up by straight length
Device, pressure transmitter, flow transmitter, computer is in stipulated time point from flow control valve, temperature transmitter, pressure inverting
Device, flow transmitter are collected data and are stored；
S2, judge that by computer data acquisition gas phase flow field is stable after, open electronic plus sand device, the solid particle in sand tank
Straight length is entered through knockout control valve, then solid particle mixes to form turbulent flow as second with gas phase, constitute gas
Fixed double phase flow；
S3, using Dual-Phrase Distribution of Gas olid to test elbow carry out erosive wear experiment：
S3.1, gas-particle two-phase flow through straight length and flow into 1# test elbow, and baffling upwards, tests elbow tube wall with 1# from horizontal direction
Collision produces erosive wear, is then departed from 1# test elbow, impacts the erosive wear feelings of 90 ° of bend pipes with this testing level upwards
Condition；
S3.2, the Dual-Phrase Distribution of Gas olid that flows out from 1# test elbow enter vertical straight length, again fully-develop turbulent flow, gas-particle two-phase
Stream flows to horizontal impact 2# test elbow straight up, is then departed from 2# test elbow, is tested vertically upward with this and turn level
The erosive wear situation of 90 ° of bend pipes of impact；
S3.3, the Dual-Phrase Distribution of Gas olid that flows out from 2# test elbow enter horizontal straight tube section, again fully-develop turbulent flow, gas-particle two-phase
Flow horizontal flows to vertically impact 3# test elbow to the left, is then departed from 3# test elbow, with 90 ° of the impact downwards of this testing level
The erosive wear situation of bend pipe；
S3.4, the Dual-Phrase Distribution of Gas olid that flows out from 3# test elbow enter straight length, again fully-develop turbulent flow, and Dual-Phrase Distribution of Gas olid is erected
Horizontal impact 4# test elbow is directly travelled up to, 3# test elbow is then departed from, is tested vertically downward with this and turns horizontal impact
The erosive wear situation of 90 ° of bend pipes；
S3.5, the Dual-Phrase Distribution of Gas olid that flows out from 4# test elbow enter straight length, again fully-develop turbulent flow, and Dual-Phrase Distribution of Gas olid is erected
Horizontal impact 5# test elbow is directly travelled up to, and 3# test elbow is then departed from, 90 ° is impacted with this testing level right-angle steering
The erosive wear situation of bend pipe；
S3.6, the Dual-Phrase Distribution of Gas olid that flows out from 5# test elbow enter recovery line, and then flowing into sand tank carries out gas solid separation
Sand grains is reclaimed, closed circuit is formed, put in experiment again, until experiment terminates.
8. according to claim 7 based on different 90 ° of elbow erosion circuit experimental techniques of Dual-Phrase Distribution of Gas olid for flowing to, which is special
Levy and be, in step S3.2～S3.5, after test elbow is left, under the promotion of subsequent fluid, which moves the gas
The loss of energy is supplemented, and speed identical with initial velocity can be kept to continue the next test elbow of impact, it is ensured that erosive wear is tested
Speed parameter is identical.
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| CN116106154B (en) * | 2023-04-14 | 2023-06-20 | 西南石油大学 | Corrosion-resistant material accelerated erosion test device and test method thereof |
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