CN106644920A - Online detection experimental device for simulating erosion corrosion of elbows with different dip angles - Google Patents
Online detection experimental device for simulating erosion corrosion of elbows with different dip angles Download PDFInfo
- Publication number
- CN106644920A CN106644920A CN201710026612.1A CN201710026612A CN106644920A CN 106644920 A CN106644920 A CN 106644920A CN 201710026612 A CN201710026612 A CN 201710026612A CN 106644920 A CN106644920 A CN 106644920A
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- corrosion
- groove
- case
- pipe
- sample draw
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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
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
-
- 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
Abstract
The invention provides an online detection experimental device for simulating erosion corrosion of elbows with different dip angles and solves the problem that existing experimental devices cannot realize online detection. The experimental device comprises a cooling water tank, a temperature control water bath box and a corrosion box, wherein the corrosion box is located inside the temperature control water bath box, and the cooling water tank is located at the upper part of the corrosion box to form a top cover; the corrosion box and a pump are connected through an oil conveying pipe to form a circulation loop; bottom sample clamping grooves are formed in the bottom inner wall of a body of the corrosion box, top sample clamping grooves are formed in the top cover, and an erosion corrosion assembly which comprises a nozzle and a rotatable first sample clamping groove is arranged in the corrosion box. The experimental device can simulate both the erosion corrosion of the elbows with different dip angles and the erosion corrosion behavior of the medium flowing inner wall of the pipe, can control the composition, flow rate and temperature of a medium, can realize both electrochemical testing and weight loss testing, and is simple in structure, convenient to operate and easy to control.
Description
Technical field
The present invention relates to erosion corrosion field, specifically a kind of online prison of simulation different angle bend pipe erosion corrosion
Survey device.
Background technology
Metal material under fluid matasomatism is susceptible to erosion corrosion, and this corrosion is very normal in petroleum pipeline transport
See, its proportion in industry abrasion is more than 50%.Erosion corrosion is due at a high speed between metal surface and corrosive fluid
Relative motion and the metal damage phenomenon that produces, are erosive wear and the interactive result of electrochemical corrosion.In prior art
In, using fluid-guiding type, rotary, injecting type experimental provision, wherein fluid-guiding type experimental provision really to simulate erosion corrosion more
Pipeline flows, but device volume is huge, builds operating cost height, and controllability is low；And revolver can more uniform simulation punching
Brush corrosion, but the high-speed rotation of impeller can drive rotating and then the relative velocity between impact sample and liquid for liquid, it is impossible to it is true
Real simulation tube wall erosion corrosion situation；Injecting type experimental provision has many kinds, is all based on circulating pump and nozzle is produced at a high speed
The structure that flow media is impacted to sample, the flow velocity that liquid stream can be impacted with precise control, experimental period is short, but does not match somebody with somebody
The agitating device of set, it is impossible to real simulation corrosive pipeline environment, therefore there is considerable restraint.
The content of the invention
It is an object of the invention to provide a kind of simulation inner-walls of duct erosion corrosion and different angle bend pipe erosion corrosion collection
The on-line measuring device of one, solves the problems, such as that existing apparatus can not more really simulate pipeline inside actual operating mode, from
And the decay resistance of different tubing is made compared with actual evaluation.
The present invention solves its technical problem technical scheme to be taken：One kind simulation different angle bend pipe erosion corrosion
On-line checking experimental provision, including corrosion case and electro-chemical test equipment, corrosion box top overthe openings are provided with top cover,
The top cover lower end is provided with top sample draw-in groove, and the corrosion bottom portion is provided with bottom sample draw-in groove, in top sample draw-in groove and
Erosion corrosion component, the top sample draw-in groove, bottom sample draw-in groove and erosion corrosion component are provided between bottom sample draw-in groove
On be equipped with the interface being connected with the electro-chemical test equipment, the corrosion case built with pumped (conveying) medium, the corrosion case lead to
Cross petroleum pipeline to be connected with oil transfer pump, circulate pumped (conveying) medium in corrosion case, it is described corrosion case in be additionally provided with reference electrode and
Auxiliary electrode, the reference electrode and auxiliary electrode are placed in the pumped (conveying) medium and are set with the electro-chemical test by circuit
Standby connection.Corrosion case is that cylindrical shape corrodes case, and closed circuit, mould are constituted by petroleum pipeline between cylindrical shape corrosion case and oil transfer pump
Intend transport of the pumped (conveying) medium in petroleum pipeline.
Further, the erosion corrosion component includes shower nozzle, clamping groove plate, removable gim peg, inclinometer and specimen mounting, institute
State draw-in groove back to be connected with specimen mounting by removable gim peg, the inclinometer is fixedly connected on specimen mounting and the angle
Degree instrument is symmetrical arranged along removable gim peg, and the clamping groove plate is provided with pointer, and the pointer is relative with the clamping groove plate solid
Fixed, the clamping groove plate is provided with the first sample draw-in groove relative with the shower nozzle, and the shower nozzle is by pipe and the corrosion case
Connection, and the pipe is provided with the oil transfer pump for making that pumped (conveying) medium Jing pipes are sprayed by shower nozzle in corrosion case.Clamping groove plate and angle
Instrument can be moved up and down by adjusting removable gim peg along specimen mounting, and clamping groove plate can also be adjusted by inclinometer and wash away angle
Degree, shower nozzle is ejected into pumped (conveying) medium on the sample in the first sample draw-in groove, convey during transport medium with being simulated
Medium washes away to pipeline, and by inclinometer the angle of clamping groove plate is adjusted, and changes between the pumped (conveying) medium of sample and shower nozzle injection
Angle, to simulate the bend pipe of different angle, pointer is fixed with respect to clamping groove plate, for indicating the size at inclination angle.
Top sample draw-in groove, bottom sample draw-in groove and the first sample draw-in groove are referred to as sample draw-in groove, sample and sample draw-in groove
Interior equal car has screw thread, and sample size is in the same size with sample draw-in groove, and sample is closely connected by screw thread with sample draw-in groove, corrodes case
Top and the sample draw-in groove of bottom be multiple, electro-chemical test equipment interface is equipped with sample draw-in groove, by interface according to
It is secondary to be connected with electro-chemical test equipment and computer.
Protection system is additionally provided with experimental provision, it is adaptable to which various corrosive mediums, device is simple, removable.
Further, in order to more really simulate corrosive pipeline environment, also including temperature controlled water bath case and cooling water tank, the top
Cover and be connected with cooling water tank by cooling water pipe for hollow structure, and the top cover, the cooling water pipe is provided with pump, the corruption
Erosion lower box part is placed in the temperature controlled water bath case.Cylindrical shape corrode case and temperature controlled water bath case be can cover-opening structure, cylindrical shape
Corrosion case is located at the inside of temperature control water bath cabinet, and cooling water tank is located at the top of cylindrical shape corrosion case and connects with top cover.
Further, in order to realize pipeline in pumped (conveying) medium flow and flow velocity control, the petroleum pipeline be provided with regulation it is defeated
The valve of pumped (conveying) medium flow and flow velocity in oil pipe, to simulate different transporting velocities of the pumped (conveying) medium in petroleum pipeline, the circle
Pipe is provided with the valve for adjusting pumped (conveying) medium flow and flow velocity in pipe.Adjusted by the aperture or replacing shower nozzle of control valve
Flow.
Further, in order to realize the reading and process of electrochemical apparatus experimental data, also including computer, the computer and institute
State the connection of electro-chemical test equipment.
The invention has the advantages that：
1. the present invention adopts circulating water using temperature control water bath cabinet heating cylinder type corrosion case, corrosion case top cover, makes pipe
Road top is inside and outside to form the temperature difference, the conduit running environment of more real simulation.
2. the advantage of the existing injecting type of present invention collection and fluid-guiding type erosion-corrosion experiment device, realizes simulation inner-walls of duct punching
Brush corrosion and different angle bend pipe erosion corrosion on-line monitoring are integrated.
3. using the strong material of corrosion resistance, can simulate different corrosive mediums washes away corruption to cylinder type corrosion case of the present invention
Erosion environment.
4. shower nozzle of the present invention is connected with pump, can control velocity of medium by control valve or replacing shower nozzle size, realizes
Erosion corrosion under different in flow rate.
5. sample draw-in groove of the present invention is unique design, and electro-chemical test equipment interface, sample and examination are provided with sample draw-in groove
Equal car has screw thread on scale groove, and sample is closely connected with sample draw-in groove by screw thread, and sample is surveyed in sample draw-in groove by electrochemistry
Examination equipment interface is connected with electro-chemical test equipment and computer.Can control to wash away angle by adjusting angle.
6. the present invention is provided with test sample card truss and is set in inside chamber, there is sample draw-in groove on specimen mounting, and sample draw-in groove is not only
Can move up and down along specimen mounting, can also be adjusted by inclinometer and wash away angle.
7. present invention corrosion box top is provided with cold water storage cistern, can carry out difference by controlling cold water storage cistern and water bath temperature
Corrode temperature difference next top.
Description of the drawings
With reference to the accompanying drawings and examples the invention will be further described.
Fig. 1 is the overall structure diagram of preferred embodiment；
Fig. 2 is the structural representation of erosion corrosion component of the present invention；
Fig. 3 is the structural representation of draw-in groove of the present invention.
In figure：1. shower nozzle；2. top sample draw-in groove；3. case is corroded；4. pipe；5. oil transfer pump；6. valve；7. the first sample
Draw-in groove；8. clamping groove plate；9. gim peg may move；10. inclinometer；11. pointers；12. specimen mountings；13. bottom sample draw-in grooves；14.
Temperature controlled water bath case；15. oil transfer pumps；16. petroleum pipelines；17. valves；18. top covers；19. cooling water tanks；20. cooling water pipes；21. pumps；
22. electro-chemical test equipment；23. computers；24. reference electrodes；25. auxiliary electrodes.
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
The basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
As Figure 1-3, a kind of on-line checking experimental provision of simulation different angle bend pipe erosion corrosion of the invention, adopts
Integrated mode of washing away, including cylindrical shape corrosion case 3, temperature controlled water bath case 14, cooling water tank 19, electricity are tried with injecting type and pipe stream
Chemical testing equipment 22 and computer 23, electro-chemical test equipment 22 is connected with computer 23, reads and process electro-chemical test equipment
22 experimental data；Built with pumped (conveying) medium, the corrosion case 3 is connected the corrosion case 3 by petroleum pipeline 16 with oil transfer pump 15,
Circulate pumped (conveying) medium in corrosion case 3, the petroleum pipeline 16 is provided with pumped (conveying) medium flow and stream in regulation petroleum pipeline 16
The valve 17 of speed, to simulate different transporting velocities of the pumped (conveying) medium in petroleum pipeline 16, cylindrical shape corrosion case 3 and oil transfer pump 15 it
Between closed circuit is constituted by petroleum pipeline 16, simulate transport of the pumped (conveying) medium in petroleum pipeline 16, the cylindrical shape corrosion case 3 is
Cover-opening structure, positioned at the inside of temperature controlled water bath case 14, the overthe openings of corrosion case 3 are provided with top cover 18, during the top cover 18 is
Hollow structure, and the top cover 18 connected by cooling water pipe 20 with cooling water tank 19, the cooling water pipe 20 is provided with pump 21, Jing
Cross pump 21 and form circulating water.
The corrosion bottom half inwall of case 3 is provided with multiple bottom sample draw-in grooves 13 to simulate washing away for duct bottom
Corrosion condition, the bottom surface of top cover 18 of the cylindrical shape corrosion case 3 is provided with multiple top sample draw-in grooves 2 to simulate the top of pipeline
Place by the corrosion sample for matching, the top sample in corrosion condition, bottom sample draw-in groove 13 and top sample draw-in groove 2
The interface a of electro-chemical test equipment 22 being connected with electro-chemical test equipment 22 is equipped with draw-in groove 2 and bottom sample draw-in groove 13.Institute
State in corrosion case 3 and be additionally provided with reference electrode 24 and auxiliary electrode 25, the reference electrode 24 and auxiliary electrode 25 are placed in described defeated
Send in medium and be connected with the electro-chemical test equipment 22 by circuit.
As shown in Fig. 2 being provided with erosion corrosion component, the punching between top sample draw-in groove 2 and bottom sample draw-in groove 13
Brush eroded components include shower nozzle 1, clamping groove plate 8, removable gim peg 9, inclinometer 10 and specimen mounting 12, shower nozzle 1 by pipe 4 with
The port of export connection of oil transfer pump 5, and on pipe 4 equipped with valve 6 adjusting the flow velocity of pumped (conveying) medium, the arrival end of oil transfer pump 5
Connected with the corrosion case 3 by pipe 4, in the clamping groove plate 8 the first sample draw-in groove 7 relative with the shower nozzle 1 is provided with, the
The interface a of electro-chemical test equipment 22 also is provided with one sample draw-in groove 7, the back side of the clamping groove plate 8 is by removable gim peg 9 and examination
Sample rack 12 connects, and the inclinometer 10 is fixedly connected on specimen mounting 12 and the inclinometer 10 is symmetrical along removable gim peg 9
Arrange, the clamping groove plate 8 is provided with pointer 11, and the pointer 11 is relatively fixed with the clamping groove plate 8, clamping groove plate 8 and angle
Instrument 10 can be moved up and down by adjusting removable gim peg 9 along specimen mounting 12, by rotating the rushing come adjusting sample of clamping groove plate 8
Brush angle, the pointer 11 of clamping groove plate 8 is rotated with the rotation of clamping groove plate 8, is washed away such that it is able to read sample on inclinometer 10
The complementary angle value of angle；First sample draw-in groove 7 is by the interface a of electro-chemical test equipment 22 and reference electrode 24 and the structure of auxiliary electrode 25
Into three-electrode system, it is connected with electro-chemical test equipment 22 and computer 23 respectively, forms electrochemical workstation.
Top sample draw-in groove 2, the sample draw-in groove 7 of bottom sample draw-in groove 13 and first are referred to as sample draw-in groove, sample and sample
Equal car has screw thread in draw-in groove, and sample size is in the same size with sample draw-in groove, and sample is closely connected by screw thread with sample draw-in groove, rotten
The top of erosion case 3 and the sample draw-in groove of bottom are multiple, adopt in addition to the interface a of electro-chemical test equipment 22 in sample draw-in groove
Made with insulating materials, sample is connected successively by interface a with electro-chemical test equipment 22 and computer 23.
Protection system is additionally provided with experimental provision, it is adaptable to which various corrosive mediums, device is simple, removable.
The course of work of this device is as follows：
To add a certain amount of water, design temperature to test temperature that sample is loaded into bottom examination in temperature controlled water bath case 14 first
Scale groove 13, then a certain amount of sour crude oil is added into cylindrical shape corrosion case 3, start the open top part circulating water of pump 21, treat
Sour crude oil temperature reaches design temperature, respectively sample is loaded into top sample draw-in groove 2 and the first sample draw-in groove 7, starts oil transportation
Pump 15 starts the erosion corrosion of crude oil pipeline inwall in cylindrical shape corrosion case 3, then adjusts the angle and height of the first sample draw-in groove 7
Degree so that shower nozzle 1 is directed at the center of sample in the first sample draw-in groove 7, starts oil transfer pump 5, starts different angle bend pipe and washes away corruption
Erosion, further carries out real-time electrochemical parameter measurement by electro-chemical test equipment 22, can be with coutroi velocity, medium composition, temperature
The conditions such as degree.
Arrow represents the flow direction of medium in figure.
With the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, related staff
Completely various change and modification can be carried out in without departing from the scope of the present invention.The technical scope of this invention is not
The content being confined on specification, it is necessary to its technical scope is determined according to right.
Claims (5)
1. it is a kind of simulation different angle bend pipe erosion corrosion on-line checking experimental provision, it is characterised in that：Including corrosion case (3)
With electro-chemical test equipment (22), top cover (18) is provided with above corrosion case (3) open top, top cover (18) lower end sets
There is top sample draw-in groove (2), corrosion case (3) bottom is provided with bottom sample draw-in groove (13), at top sample draw-in groove (2) and bottom
It is provided with erosion corrosion component between portion's sample draw-in groove (13), the top sample draw-in groove (2), bottom sample draw-in groove (13) and washes away
The interface being connected with the electro-chemical test equipment (22) is equipped with eroded components, the corrosion case (3) is situated between built with conveying
Matter, the corrosion case (3) is connected by petroleum pipeline (16) with oil transfer pump (15), circulates the interior pumped (conveying) medium of corrosion case (3),
Reference electrode (24) and auxiliary electrode (25), the reference electrode (24) and auxiliary electrode are additionally provided with corrosion case (3)
(25) it is placed in the pumped (conveying) medium and is connected with the electro-chemical test equipment (22) by circuit.
2. the on-line checking experimental provision of different angle bend pipe erosion corrosion is simulated as claimed in claim 1, it is characterised in that：
The erosion corrosion component includes shower nozzle (1), clamping groove plate (8), removable gim peg (9), inclinometer (10) and specimen mounting (12),
Clamping groove plate (8) back side is connected by removable gim peg (9) with specimen mounting (12), and the inclinometer (10) is fixedly connected on
The removable gim peg (9) on specimen mounting (12) and the inclinometer (10) edge is symmetrical arranged, and the clamping groove plate (8) is provided with pointer
(11), and the pointer (11) is relatively fixed with the clamping groove plate (8), the clamping groove plate (8) is provided with and the shower nozzle (1) phase
To the first sample draw-in groove (7), the shower nozzle (1) is connected by pipe (4) with corrosion case (3), and on the pipe (4)
It is provided with the oil transfer pump (5) for making the interior pumped (conveying) medium Jing pipes (4) of corrosion case (3) be sprayed by shower nozzle (1).
3. the on-line checking experimental provision of different angle bend pipe erosion corrosion is simulated as claimed in claim 1 or 2, and its feature exists
In：Also include temperature controlled water bath case (14) and cooling water tank (19), the top cover (18) is hollow structure, and the top cover (18) is logical
Supercooling water pipe (20) is connected with cooling water tank (19), and the cooling water pipe (20) is provided with pump (21), under corrosion case (3)
Portion is placed in the temperature controlled water bath case (14).
4. the on-line checking experimental provision of different angle bend pipe erosion corrosion is simulated as claimed in claim 3, it is characterised in that：
The petroleum pipeline (16) is provided with the valve (17) for adjusting the interior pumped (conveying) medium flow of petroleum pipeline (16) and flow velocity, the pipe (4)
It is provided with the valve (6) for adjusting the interior pumped (conveying) medium flow of pipe (4) and flow velocity.
5. the on-line checking experimental provision of different angle bend pipe erosion corrosion is simulated as claimed in claim 4, it is characterised in that：
Also include computer (23), the computer (23) is connected with the electro-chemical test equipment (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026612.1A CN106644920A (en) | 2017-01-14 | 2017-01-14 | Online detection experimental device for simulating erosion corrosion of elbows with different dip angles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026612.1A CN106644920A (en) | 2017-01-14 | 2017-01-14 | Online detection experimental device for simulating erosion corrosion of elbows with different dip angles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106644920A true CN106644920A (en) | 2017-05-10 |
Family
ID=58843321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710026612.1A Pending CN106644920A (en) | 2017-01-14 | 2017-01-14 | Online detection experimental device for simulating erosion corrosion of elbows with different dip angles |
Country Status (1)
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| CN (1) | CN106644920A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449730A (en) * | 2017-08-28 | 2017-12-08 | 天津大学 | 90 ° of elbow metal erosion electrochemical testing devices in a kind of Flow Corrosion medium |
| CN109632552A (en) * | 2019-01-04 | 2019-04-16 | 浙江理工大学 | The accurate erosion corrosion system and test method of adaptive feedback adjustment |
| CN109668823A (en) * | 2019-01-11 | 2019-04-23 | 中国石油大学(华东) | A kind of bend pipe erosion corrosion pattern original position online acquisition and electrochemical detection system |
| CN109900579A (en) * | 2019-04-04 | 2019-06-18 | 中国船舶重工集团公司第七0四研究所 | Realize impeller of sea water pump erosion corrosion test device |
| CN110132715A (en) * | 2019-04-10 | 2019-08-16 | 中国石油大学(华东) | Adjustable symmetrical multichannel water conservancy diversion erosion corrosion test macro and test method |
| CN111650117A (en) * | 2020-06-28 | 2020-09-11 | 中山大学 | Simulation heat-transfer pipe corrosion experiment and normal position electrochemistry testing arrangement |
| CN112763308A (en) * | 2020-12-29 | 2021-05-07 | 哈尔滨工程大学 | Multi-degree-of-freedom erosion auxiliary system capable of continuously adjusting and monitoring in real time |
| CN114324128A (en) * | 2021-12-06 | 2022-04-12 | 洛阳理工学院 | Corrosion test device and method for simulating real working condition of heat exchanger elbow |
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| CN205665129U (en) * | 2016-04-12 | 2016-10-26 | 中国石油大学(华东) | High temperature high pressure contains erosion -corrosion simulation of solid particle fluid and electrochemistry testing experiment device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449730B (en) * | 2017-08-28 | 2023-08-25 | 天津大学 | Electrochemical testing device for corrosion of 90-degree elbow metal in flowing corrosive medium |
| CN107449730A (en) * | 2017-08-28 | 2017-12-08 | 天津大学 | 90 ° of elbow metal erosion electrochemical testing devices in a kind of Flow Corrosion medium |
| CN109632552A (en) * | 2019-01-04 | 2019-04-16 | 浙江理工大学 | The accurate erosion corrosion system and test method of adaptive feedback adjustment |
| CN109632552B (en) * | 2019-01-04 | 2023-12-12 | 浙江理工大学 | Self-adaptive feedback adjustment accurate erosion corrosion system and testing method |
| CN109668823A (en) * | 2019-01-11 | 2019-04-23 | 中国石油大学(华东) | A kind of bend pipe erosion corrosion pattern original position online acquisition and electrochemical detection system |
| CN109668823B (en) * | 2019-01-11 | 2021-05-14 | 中国石油大学(华东) | In-situ online collection and electrochemical detection system for erosion corrosion morphology of bent pipe |
| CN109900579A (en) * | 2019-04-04 | 2019-06-18 | 中国船舶重工集团公司第七0四研究所 | Realize impeller of sea water pump erosion corrosion test device |
| CN109900579B (en) * | 2019-04-04 | 2024-03-01 | 中国船舶重工集团公司第七0四研究所 | Device for realizing erosion corrosion test of sea water pump impeller |
| CN110132715A (en) * | 2019-04-10 | 2019-08-16 | 中国石油大学(华东) | Adjustable symmetrical multichannel water conservancy diversion erosion corrosion test macro and test method |
| CN111650117A (en) * | 2020-06-28 | 2020-09-11 | 中山大学 | Simulation heat-transfer pipe corrosion experiment and normal position electrochemistry testing arrangement |
| CN112763308A (en) * | 2020-12-29 | 2021-05-07 | 哈尔滨工程大学 | Multi-degree-of-freedom erosion auxiliary system capable of continuously adjusting and monitoring in real time |
| CN112763308B (en) * | 2020-12-29 | 2022-11-25 | 哈尔滨工程大学 | Multi-degree-of-freedom erosion auxiliary system capable of continuously adjusting and monitoring in real time |
| CN114324128B (en) * | 2021-12-06 | 2023-10-17 | 洛阳理工学院 | Corrosion test device and method for simulating actual working condition of bent pipe of heat exchanger |
| CN114324128A (en) * | 2021-12-06 | 2022-04-12 | 洛阳理工学院 | Corrosion test device and method for simulating real working condition of heat exchanger elbow |
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Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |