CN106896030A - A kind of pipe flushing corrosion test experimental provision - Google Patents
A kind of pipe flushing corrosion test experimental provision Download PDFInfo
- Publication number
- CN106896030A CN106896030A CN201710026618.9A CN201710026618A CN106896030A CN 106896030 A CN106896030 A CN 106896030A CN 201710026618 A CN201710026618 A CN 201710026618A CN 106896030 A CN106896030 A CN 106896030A
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- China
- Prior art keywords
- sample
- sample stage
- corrosion test
- pipeline
- experimental provision
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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
- 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
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
Abstract
The present invention provides a kind of pipe flushing corrosion test experimental provision, including pipeline, sample stage and electro-chemical test platform, pipeline is provided with perforate, sample stage end is arranged in perforate, sample stage end is provided with corrosion test sample mounting surface, corrosion test sample mounting surface is provided with corrosion test sample mounting hole, sample is placed in mounting hole, and mounting surface and sample test face with inner-walls of duct on same curved surface, it is further opened with pipeline for installing reference electrode and auxiliary electrode putting hole, putting hole is oppositely arranged with position of opening, sample and reference electrode are connected with electro-chemical test platform wire respectively with auxiliary electrode.Inventive samples platform can be directly placed at sample inside pipeline, the sealing of sample stage, tightness are good, and sample is seamlessly transitted with inner-walls of duct, the factor of the influence experiment such as fluid flow state is eliminated, meet the requirement that researcher does the experiment of pipe flushing corrosion test.
Description
Technical field
The present invention relates to erosion-corrosion experiment technical field of measurement and test, more particularly to a kind of pipe flushing corrosion test experiment
Device.
Background technology
Erosion corrosion (Erosion-Corrosion) is also called erosion corrosion, be between metal surface and corrosive fluids by
It is that material is received to wash away the result of cutting and Corrosion Interaction in the metal damage phenomenon that high speed relative motion causes, is one
The larger local corrosion of harmfulness is planted, is widely present in production fields such as oil, chemical industry.All classes in moving fluid
Flow passage components and valve of the equipment of type such as slurry conveying pipeline, pump etc., can all be subjected to the destruction of erosion corrosion, especially exist
In two-phase flow containing solid phase particles, destroy even more serious.Therefore the research of erosion corrosion problem, causes the height weight of people
Depending on.
Erosion corrosion is a very complicated process, and influence factor is numerous, and summing up mainly includes material (metallurgy), ring
Three aspects in border and hydrodynamics.Past people pass through the electrochemical measuring technology under weightless test and various flox conditions,
More in-depth study has been done in influence to preceding two aspects factor, and and then carried out the research washed away with Corrosion Interaction,
To disclose the essence of erosion corrosion.But cannot be controlled well due to being limited by condition, in research process environment because
The problems such as plain (temperature, oxygen content etc.) and fluid flow state, result is caused to meet the requirement desired by researcher so that right
Progress in terms of hydrodynamics is slow.Therefore in the urgent need to people are improved to experimental provision, to expect can solve the problem that
The erosion corrosion problem of pipeline.
The research equipment of erosion corrosion is varied, and gained erosion corrosion data have certain with the difference of experimental technique
The research equipment of difference conventional at present erosion corrosion mainly includes rotary, fluid-guiding type and the class of injecting type three.Rotary experiment
The relative velocity that the shortcoming of device is mainly between sample and the solid two-phase flow of liquid is typically relatively low, and the exact value of flow velocity is difficult really
It is fixed；Solid particle suspension degree is uneven or even is deposited in bottom of device；The angle of attack is typically uncontrollable；Dynamic under high flow velocities
Electro-chemical test is also relatively difficult to achieve.Injecting type experimental provision have developed some and can carry out the device of electrochemical measurement, but by
In the limitation of the kinetic pump for using etc., the system that solid content is big or solid phase particles are larger is not suitable for.Pipe flow experiment is due to reality
The condition of testing is easily controlled, therefore is the best method for simulating pipe flushing corrosion.Lacing film or SMD is used in experimentation
Sample, test meets the partial condition of erosion corrosion in pipeline.Pass through in fluid used and actual pipeline in experimentation
Fluid is consistent or similar, and the influence to material corrosion is washed away come Study of Fluid by the method.Although the method can be rushed
Brush experiment, but due to the interference of lacing film or paster sample stream field, erosion-corrosion experiment result is being carried out just to researcher
True judgement produces interference, hinders progress of the researcher to erosion corrosion.
The content of the invention
The technical problems to be solved by the invention are：In order to solve experimental provision imperfection in the prior art, experimentation
Middle outside condition difference, than larger, leads to not test pipeline erosion corrosion technical problem well to the influence tested.This hair
Bright to provide a kind of sample stage that can be used to do erosion corrosion, sample stage end has with inner-walls of duct and seamlessly transits well, in reality
During testing, extra influence will not be produced to experiment flowing.
The present invention provides a kind of device that can be used for erosion-corrosion experiment test, sample can be placed directly within inside pipeline
Row erosion-corrosion experiment, makes sample stage be fixed with pipeline, by methods such as packing rings by certain means (being such as threadedly coupled)
Make sample stage and seal for pipe joints, while sample is seamlessly transitted with inner-walls of duct, in experimentation, will not be because of the presence of sample
Increase and additional influence is produced to experimental results to the disturbance of fluids within pipes.
The present invention solves its technical problem technical scheme to be taken：A kind of pipe flushing corrosion test experiment dress
Put, including pipeline, stiffening ring, sample stage, screw rod, nut, rubber washer, electro-chemical test platform and sample.Pipeline is
Pipeline section used by test experiments, can be bend pipe or straight tube.In order to install sample stage, pipeline tapping is taper for perforate on pipeline
Hole, aperture is gradually increased from inner-walls of duct to outer wall direction, and sample stage terminal end shape is the taper platform matched with tapered bore profile,
The tapping (pipeline and sample stage junction) of pipeline is circumferentially arranged with the stiffening ring with pipeline integrally connected.Pipeline and sample stage
It is connected through a screw thread, coupling part sample stage shape is fitted close with the perforate of pipeline, because the endoporus aperture of stiffening ring is more than
The aperture of perforate, therefore the endoporus of stiffening ring is in turn connected to form shoulder hole with perforate, the sample stage is and the shoulder hole
Rubber washer is provided with the cylindrical multi-diameter shaft of cooperation, sample stage and the stairstepping cooperation of pipeline to be sealed.Sample stage is adopted
Use isolation material.The sample stage end is provided with corrosion test sample mounting surface, and the corrosion test sample mounting surface is provided with
Corrosion test sample mounting hole, the sample is placed in the mounting hole, and the mounting surface inside sample stage is with inner-walls of duct one
On individual curved surface (or plane), it is to avoid flow field disturbance occur in fluids within pipes when flowing through joint.Sample stage center is vertically
A circular hole is provided with, screw rod is provided with circular hole and is coupled with sample stage by screw thread through sample stage, and screw rod.Set inside sample stage
Corrosion test sample mounting hole, being shaped as mounting hole is circular or square, ensures when sample is processed and sample stage inside mounting hole
It is fitted close, and thickness of sample is not more than sample stage inner sample and installs hole depth.Sample center back is provided with screw, and runs through
Screw flight connection in the middle part of sample stage, screw rod is metal material, external wire connection electro-chemical test platform.Sample is installed
When, sample fitting depth is controlled by screw rod, when sample test face and the test sample mounting surface (i.e. inner-walls of duct) of sample stage
At same curved surface (or plane) by nut check, metallic gasket is divided into during nut check, it is to avoid fluids within pipes are flowed through and connect
Occurs flow field disturbance when at conjunction.The present invention also sets up a reference electrode and auxiliary electrode putting hole, and the carrying out of convenient experiment is prevented
Disturbance fluids within pipes are only placed due to reference electrode and auxiliary electrode in experimentation interference is produced to experimental result, improve real
Test the accuracy of result.The reference electrode, on sample stage opposite, is oppositely arranged with auxiliary electrode putting hole with perforate.The present invention
Replaceable sample carries out erosion-corrosion experiment, and the sample stage is good with seal for pipe joints, solid and reliable, and small volume, sample, sample
Sample platform inside and inner-walls of duct can be prevented effectively from lacing film, paster and test the flow field disturbance for bringing on same curved surface (or plane).
The invention can meet the requirement of pipe flushing corrosion test experiment, in turn simplify test operation flow, be very easy to survey
Try the carrying out of experiment.
Preferably, the sample stage is a cylindrical hierarchic structure, connect with stiffening ring in sample stage abutment body hierarchic structure
The outer dia of socket part point between 50mm~200mm, with the diameter of the outside of perforate coupling part 20mm~100mm it
Between, sample stage height is not limited.There is a circular hole in the middle of the sample stage, the Circularhole diameter is between 5mm~20mm.
Preferably, after the screw rod uses flat screw, the screw length to coordinate sample stage length, outside exceeds sample
Sample platform 30mm~100mm, diameter coordinates sample stage center hole screw thread between 5mm~20mm.Sample center back screw thread depth
It is 2mm~10mm to spend, and being connected with screw rod prevents sample slip from coming off.
Preferably, the rubber washer for sealing uses grease proofing rubber washer.
Preferably, the stiffening ring internal diameter is between 50mm~200mm, and there is internal thread, coordinate with sample stage, be circle
Ring structure.
Preferably, the reference electrode and auxiliary electrode putting hole are sealing screw of the diameter in 20mm~50mm,
External electro-chemical test platform.
Preferably, the pipeline and stiffening ring and sample stage junction, sample stage and sample and screw rod junction and
Reference electrode is sealed with auxiliary electrode putting hole junction by seal grease.
Preferably, the pipe flushing corrosion test experimental provision sample stage is isolation material, screw rod is metal material,
External wire connects electro-chemical test platform, and miscellaneous part is transparent organic glass, alloy material or other pipe materials.
The beneficial effects of the invention are as follows：A kind of pipe flushing corrosion test experimental provision that the present invention is provided, by setting
This list of elements such as sample stage, compared with experiment in the past, due to the presence of sample stage, there is following advantage：First, sample
Platform being capable of quick despatch, it is ensured that experimental implementation is simple, convenient；Secondly as sample stage can be directly placed at sample in pipeline
Portion, the sealing of sample stage, tightness is good, and sample is seamlessly transitted with inner-walls of duct, eliminates the influence such as fluid flow state real
The factor tested, meets the requirement that researcher does the experiment of pipe flushing corrosion test；3rd, what sample stage can be repeatedly makes
With saving experimental cost.Therefore it is a kind of more satisfactory experimental provision.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of structural representation for doing the optimum embodiment of erosion-corrosion experiment test device of the invention.
Fig. 2 is the top view schematic diagram of sample stage.
Fig. 3 is the enlarged diagram of reference electrode and auxiliary electrode putting hole local I in Fig. 1.
Fig. 4 is the enlarged diagram of sample lay down location local I I in Fig. 1.
Fig. 5 is the enlarged diagram of seal washer local I II in Fig. 1.
Fig. 6 is the enlarged diagram of stiffening ring and the local I V of sample stage assembling in Fig. 1.
Fig. 7 is the enlarged diagram that screw rod and sample stage nut fix local V in Fig. 1.
In figure：1st, screw rod, 2, nut, 3, sample stage, 4, stiffening ring, 5, pipeline, 6, sample, 7, rubber washer, 8, reference
Electrode and auxiliary electrode putting hole, 9, metallic gasket.
Specific embodiment
Presently in connection with accompanying drawing, the present invention is described in detail.This figure is simplified schematic diagram, is only illustrated in a schematic way
Basic structure of the invention, therefore it only shows the composition relevant with the present invention.
As shown in figs. 1-7, it is the embodiment of the present invention, one kind is used for pipe flushing corrosion test experimental provision, comprising screw rod
1, nut 2, sample stage 3, stiffening ring 4, pipeline 5, sample 6, rubber washer 7, reference electrode and auxiliary electrode putting hole 8, metal
Pad 9.Pipeline 5 is bend pipe.The sample stage 3 is a cylindrical hierarchic structure, and the outer dia with the coupling part of stiffening ring 4 is
External screw thread is arranged at 100mm, bottom, and the outer dia with the outside of perforate coupling part is 50mm, in the mounting surface of corrosion test sample 6
Between Circularhole diameter be 8mm.The wall thickness of pipeline 5 is 10mm, and the height of sample stage 3 is 80mm, and sample stage 3 is isolation material, preferably clear
Lucite material.The internal diameter of stiffening ring 4 is 100mm, to there is internal thread cylindrical structure, is coordinated with sample stage 3, and use rubber blanket
Circle 7 is sealed.The flat screw of use of screw rod 1, a length of 130mm of screw rod 1, a diameter of 8mm, the thickness of sample 6 is 8mm, the back side spiral shell of sample 6
Hole depth is 4mm, and being connected through a screw thread with screw rod 1 prevents the slip of sample 6 from coming off, and screw rod 1 is metal material, preferably copper, outward
Connect wire connection electro-chemical test platform.When sample 6 is installed, the fitting depth of sample 6 is controlled by screw rod 1, when the test surfaces of sample 6
Locked by nut 2 at same curved surface (or plane) with the top surface of sample stage 3 (inwall of pipeline 5), nut 2 divides into metal when locking
Packing ring 9, it is to avoid occur flow field disturbance in pipeline 5 during the engaged place of fluid stream.The erosion corrosion experimental apparatus for testing of pipeline 5 is using saturating
Bright lucite manufacture, is easy to fluid flow state in observation pipeline 5.Reference electrode installs reference with auxiliary electrode putting hole 8
Electrode and auxiliary electrode, and it is connected to the electro-chemical test platform that screw rod 1 is connected.
After experiment starts, fluid flows through the erosion corrosion test experiments of pipeline 5 and fills according to operating mode or requirement of experiment in pipeline 5
Put, inside erosion corrosion pipeline 5, sample stage 3 simultaneously, the erosion corrosion sample 6 in the case where any disturbance is not affected by, in this
Meanwhile, opening electro-chemical test platform can the etch state of monitor in real time sample 6, understanding corrosion process.After erosion corrosion terminates, can
To unload sample 6, test can be analyzed to it.
The present invention by setting the grade of sample stage 3 this list of elements, compared with experiment in the past, because the pipeline 5 washes away corruption
The presence of experimental apparatus for testing is lost, sample stage 3 being capable of quick despatch, it is ensured that experimental implementation is simple, convenient, due to the energy of sample stage 3
Sample 6 is directly placed inside pipeline 5, the sealing of sample stage 3, tightness is good, and sample 6 and the interior walls be smooth of pipeline 5
Transition, it is consistent with pipeline 5, the factors such as fluidised form will not be changed, while the energy monitor in real time detection etch state of pipeline 5, meets
Experimental cost is saved in the requirement that researcher is studied the erosion corrosion of pipeline 5, the use that sample stage 3 can be repeatedly.Therefore
It is a kind of erosion corrosion experimental apparatus for testing of preferable pipeline 5.
With above-mentioned according to desirable embodiment of the invention as enlightenment, by above-mentioned description, related staff
Various changes and amendments can be carried out in without departing from the scope of the present invention completely.The technical scope of this invention is not
It is confined to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (10)
1. a kind of pipe flushing corrosion test experimental provision, it is characterised in that：Surveyed including pipeline (5), sample stage (3) and electrochemistry
Examination platform, the pipeline (5) is provided with perforate, and sample stage (3) end is arranged in the perforate, the sample stage (3)
End is provided with corrosion test sample (6) mounting surface, and corrosion test sample (6) mounting surface is provided with corrosion test sample (6)
Mounting hole, the sample (6) is placed in the mounting hole, and the mounting surface and sample (6) test surfaces are interior with the pipeline (5)
Wall is further opened with for installing reference electrode and auxiliary electrode putting hole (8) on same curved surface on the pipeline (5), described
Reference electrode is oppositely arranged with auxiliary electrode putting hole (8) and the position of opening, the sample (6) and the reference electrode
It is attached with the electro-chemical test platform respectively by wire with auxiliary electrode.
2. pipe flushing corrosion test experimental provision as claimed in claim 1, it is characterised in that：In the middle of the sample stage (3)
A circular hole being provided with vertically, screw rod (1) being provided with the circular hole, the screw rod (1) runs through the sample stage by the circular hole
(3), and end is threadedly coupled with the screw at the sample (6) back, screw rod (1) other end is provided with nut (2), by institute
State nut (2) to lock the screw rod (1) with the sample stage (3), the screw rod (1) is by wire and the electro-chemical test
Platform is connected.
3. pipe flushing corrosion test experimental provision as claimed in claim 2, it is characterised in that：The nut (2) with it is described
Metallic gasket (9) is additionally provided with screw rod (1) between sample stage (3).
4. pipe flushing corrosion test experimental provision as claimed in claim 1, it is characterised in that：Also include and the pipeline
(5) stiffening ring (4) of integrally connected, the stiffening ring (4) is circumferentially disposed along the pipeline (5) perforate, and the stiffening ring
(4) endoporus and the sample stage (3) major diameter fit.
5. pipe flushing corrosion test experimental provision as claimed in claim 4, it is characterised in that：The stiffening ring (4) it is interior
Hole aperture is more than the aperture of the perforate, and the endoporus of the stiffening ring (4) is in turn connected to form shoulder hole with the perforate, described
Sample stage (3) end is provided with the multi-diameter shaft coordinated with the shoulder hole, and the shoulder hole and the mating surface of the multi-diameter shaft
It is provided with the rubber washer (7) for sealing.
6. pipe flushing corrosion test experimental provision as claimed in claim 1, it is characterised in that：The perforate is aperture by interior
The outwards bellmouth that gradually increases, and the sample stage (3) terminal end shape is matched with the tapered bore profile.
7. pipe flushing corrosion test experimental provision as claimed in claim 1, it is characterised in that：Test sample (6) peace
Dress hole is circular or square.
8. pipe flushing corrosion test experimental provision as claimed in claim 1, it is characterised in that：The sample stage (3) uses
Isolation material is made.
9. pipe flushing corrosion test experimental provision as claimed in claim 1, it is characterised in that：The pipeline (5) with it is described
Sample stage (3) is threadedly coupled.
10. pipe flushing corrosion test experimental provision as claimed in claim 1, it is characterised in that：Sample (6) thickness is not
The depth of big test sample (6) mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026618.9A CN106896030A (en) | 2017-01-14 | 2017-01-14 | A kind of pipe flushing corrosion test experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026618.9A CN106896030A (en) | 2017-01-14 | 2017-01-14 | A kind of pipe flushing corrosion test experimental provision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106896030A true CN106896030A (en) | 2017-06-27 |
Family
ID=59198445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710026618.9A Pending CN106896030A (en) | 2017-01-14 | 2017-01-14 | A kind of pipe flushing corrosion test experimental provision |
Country Status (1)
| Country | Link |
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| CN (1) | CN106896030A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006945A (en) * | 2019-12-23 | 2020-04-14 | 万华化学集团股份有限公司 | Sample loading device for pipeline erosion corrosion test |
| CN111474110A (en) * | 2020-04-03 | 2020-07-31 | 常州大学 | Visual image monitoring flowing corrosion test device for bent pipe |
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| CN104634684A (en) * | 2015-01-27 | 2015-05-20 | 中国石油大学(华东) | Testing system for scouring corrosion of bending pipe and testing method |
| WO2016110608A1 (en) * | 2015-01-09 | 2016-07-14 | Rocsole Ltd | Method for determining a quantity of interest in a target domain, apparatus, and computer program |
| CN105842097A (en) * | 2016-03-24 | 2016-08-10 | 西南石油大学 | High-temperature high-pressure tubular-flow erosion corrosion experiment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0984265A2 (en) * | 1998-08-31 | 2000-03-08 | Ingersoll-Rand Company | Method and apparatus for machining material |
| CN102507430A (en) * | 2011-11-11 | 2012-06-20 | 天津亿利科能源科技发展股份有限公司 | Online monitoring device for corrosion in pipeline |
| CN203083911U (en) * | 2013-03-12 | 2013-07-24 | 东北石油大学 | Low-pressure pipeline corrosion hanging piece hanging device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006945A (en) * | 2019-12-23 | 2020-04-14 | 万华化学集团股份有限公司 | Sample loading device for pipeline erosion corrosion test |
| CN111006945B (en) * | 2019-12-23 | 2022-07-12 | 万华化学集团股份有限公司 | Sample loading device for pipeline erosion corrosion test |
| CN111474110A (en) * | 2020-04-03 | 2020-07-31 | 常州大学 | Visual image monitoring flowing corrosion test device for bent pipe |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170627 |
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| RJ01 | Rejection of invention patent application after publication |