CN114791401B - Flow type reducing scouring corrosion testing device for large-pipe-diameter pipe with pressure - Google Patents
Flow type reducing scouring corrosion testing device for large-pipe-diameter pipe with pressure Download PDFInfo
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- CN114791401B CN114791401B CN202210349784.3A CN202210349784A CN114791401B CN 114791401 B CN114791401 B CN 114791401B CN 202210349784 A CN202210349784 A CN 202210349784A CN 114791401 B CN114791401 B CN 114791401B
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 238000005260 corrosion Methods 0.000 title claims abstract description 48
- 230000007797 corrosion Effects 0.000 title claims abstract description 48
- 238000009991 scouring Methods 0.000 title claims abstract description 8
- 230000003628 erosive effect Effects 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 34
- 238000003860 storage Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 7
- 230000007246 mechanism Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 9
- 239000007787 solid Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 238000000840 electrochemical analysis Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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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
- G01N3/565—Investigating resistance to wear or abrasion of granular or particulate material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
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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
- G01N3/02—Details
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Abstract
The application provides a flow-type reducing scouring corrosion testing device for a large-pipe-diameter pipe with pressure, which comprises a magnetic pump, a liquid storage tank, a gas steel cylinder, a first connecting pipe section, a first testing pipe section, a second connecting pipe section, a second testing pipe section and a third connecting pipe section which are connected end to end in sequence; the magnetic pump is used for driving fluid to circulate in the loop; the liquid storage tank is used for providing fluid and heating the fluid in the loop to a specified temperature; the gas steel cylinder is used for providing pipeline pressure; the first connecting pipe section and the third connecting pipe section have the same inner diameter. The device can realize the detection of the erosion corrosion rate of different positions under the real working condition of the variable-diameter section of the oil and gas pipeline, evaluate the influence rule of each factor on the erosion corrosion mechanism, provide valuable theoretical guidance for the high-pressure erosion corrosion protection of the variable-diameter section, save the experiment cost and improve the experiment efficiency.
Description
Technical Field
The application relates to the field of high-pressure erosion corrosion, in particular to a flow-type reducing erosion corrosion testing device for a large-pipe-diameter pipe with pressure.
Background
With the entering of the oil gas exploitation of China into the middle and later stages, the partial pressure of carbon dioxide and the content of solid sand in an oil gas gathering pipeline are increased, and the problem of high-pressure scouring corrosion failure of the gathering pipeline in the CO 2 environment is more and more serious. Erosion corrosion is controlled by electrochemical corrosion and erosion wear, and there is an interaction between erosion and corrosion, i.e., erosion promotes corrosion, which also promotes erosion, and therefore, the material loss caused by erosion corrosion tends to be much greater than the sum of the material losses caused by erosion and corrosion alone. The erosion mechanism under high pressure is different from the normal pressure, and how the coupling effect of CO 2 partial pressure and fluid dynamics factors affects the evolution rule of the erosion product film under the erosion corrosion condition needs to be studied in depth. The high-pressure erosion corrosion experimental device for the gathering pipeline in the CO 2 environment mainly comprises a high-pressure jet impact system, a high-pressure rotor rotating system and a high-pressure loop testing system. Although the former two methods can simulate the erosion corrosion of the oil and gas field to a certain extent, both cannot accurately reflect the mass transfer process and hydrodynamic characteristics of the species in the gathering and transporting pipeline.
Disclosure of Invention
The application aims to provide a flow type reducing erosion corrosion test device for a large-pipe-diameter pipe with pressure, which aims to solve the problem that the experimental result of the existing experimental device for the erosion corrosion with pressure is inaccurate.
The technical scheme of the application is as follows:
A flow type reducing scouring corrosion testing device for a large-pipe-diameter pipe with pressure comprises a magnetic pump, a liquid storage tank, a gas steel cylinder, a first connecting pipe section, a first testing pipe section, a second connecting pipe section, a second testing pipe section and a third connecting pipe section which are connected end to end in sequence; the magnetic pump is used for driving fluid to circulate in the loop; the liquid storage tank is used for providing fluid and heating the fluid in the loop to a specified temperature; the gas steel cylinder is used for providing pipeline pressure; the inner diameter of the first connecting pipe section is the same as that of the third connecting pipe section, and the inner diameter of the second connecting pipe section is larger than that of the first connecting pipe section; the first test pipe section comprises a first thin pipe section, a first variable-diameter pipe section and a first thick pipe section which are sequentially communicated, one end of the first thin pipe section is connected with the first connecting pipe section, the other end of the first variable-diameter pipe section is connected with one end of the first thick pipe section, the other end of the first thick pipe section is connected with one end of the second connecting pipe section, the inner diameter of the first thin pipe section is the same as the inner diameter of the first connecting pipe section, the inner diameter of the first variable-diameter pipe section gradually increases from the first thin pipe section to the direction of the first thick pipe section, and the inner diameter of the first thick pipe section is the same as the inner diameter of the second connecting pipe section; the second test tube section comprises a second thick tube section, a second reducing tube section and a second thin tube section which are sequentially communicated, one end of the second thick tube section is connected with the other end of the second connecting tube section, the other end of the second reducing tube section is connected with one end of the second thin tube section, the other end of the second thin tube section is connected with the third connecting tube section, the inner diameter of the second thin tube section is the same as the inner diameter of the first connecting tube section, the inner diameter of the second reducing tube section gradually decreases from the second thick tube section to the direction of the second thin tube section, and the inner diameter of the second thick tube section is the same as the inner diameter of the second connecting tube section.
As a technical scheme of the application, the magnetic pump is connected with the liquid storage tank through a first stop valve.
As a technical scheme of the application, the liquid storage tank comprises a tank body; the bottom of the tank body is provided with a second stop valve and an air inlet at intervals, a heating rod for heating the fluid in the loop to a specified temperature is arranged in the tank body, a sand inlet, a thermometer and a liquid level meter are arranged on the outer side wall at intervals, and a pressure gauge and a liquid inlet are arranged on the top of the tank body at intervals; the thermometer is used for displaying the temperature of the fluid in the tank body, the pressure gauge is used for displaying the pressure of the fluid in the tank body, and the liquid level gauge is used for indicating the actual liquid level height of the liquid in the tank body.
As an aspect of the present application, the liquid storage tank is connected to the first connection pipe section through a third stop valve.
As a technical scheme of the application, the first connecting pipe section, the first test pipe section, the second connecting pipe section, the second test pipe section, the third connecting pipe section and the magnetic pump are all connected through flanges.
As a technical scheme of the application, the second connecting pipe section is provided with the flange sight glass which is used for observing the flow of the fluid in the loop and the distribution condition of sand grains.
As a technical scheme of the application, the third connecting pipe section is provided with an ultrasonic flowmeter, and the ultrasonic flowmeter is used for displaying the flow velocity of the fluid in the loop.
As a technical scheme of the application, the first connecting pipe section, the first test pipe section, the second connecting pipe section, the second test pipe section and the third connecting pipe section are all made of corrosion-resistant stainless steel.
As a technical scheme of the application, the motor of the magnetic pump is connected to a frequency converter, and the frequency converter is electrically connected with a control cabinet.
As a technical scheme of the application, the outer side walls of the first test tube section and the second test tube section are respectively provided with a positioning clamp used for clamping a sample to be tested, the sample to be tested is connected with an electrochemical workstation through a lead, and the electrochemical workstation is electrically connected with a computer.
The application has the beneficial effects that:
In the flow type reducing erosion corrosion test device for the large-diameter pipe with pressure, the device can develop multiphase flow erosion corrosion experiments of the high-pressure reducing pipe section, realize dynamic in-situ electrochemical tests, and clear erosion corrosion mechanisms at different positions of the reducing pipe and influence on the high-pressure erosion corrosion of the reducing pipe by factors such as flow rate, solid particle speed, solid particle size, temperature, ph, CO 2 partial pressure and the like, thereby providing valuable theoretical guidance for the protection of the high-pressure erosion corrosion of the reducing pipe section. Meanwhile, the erosion corrosion experimental data of different positions of the gradually-enlarged pipe section and the gradually-reduced pipe section can be obtained through one experiment, so that the experimental cost is saved, and the experimental efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a flow-type reducing erosion corrosion test device for a large-diameter pipe with pressure, which is provided by an embodiment of the application;
FIG. 2 is an enlarged schematic view of a part of the structure in FIG. 1;
Fig. 3 is a schematic diagram of a liquid storage tank according to an embodiment of the present application.
Icon: 1-a magnetic pump; 2-a liquid storage tank; 3-gas steel cylinders; 4-a first connecting tube section; 5-a first pipe section; 6-a first thick pipe section; 7-a second connecting tube section; 8-a third connecting tube section; 9-a second pipe section; 10-a second coarse pipe section; 11-a first shut-off valve; 12-a second shut-off valve; 13-air inlet; 14-heating bars; 15-a sand inlet; 16-thermometer; 17-level gauge; 18-a pressure gauge; 19-a liquid inlet; 20-flanges; 21-flange sight glass; 22-ultrasonic flowmeter; 23-electrodes; 24-a third stop valve; 25-a first reducer pipe section; 26-a second reducer pipe section.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore, should not be construed as limiting the present application.
Furthermore, in the present application, unless expressly stated or limited otherwise, a first feature may include first and second features being in direct contact, either above or below a second feature, or through additional feature contacts therebetween, rather than being in direct contact. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Examples:
Referring to fig. 1, referring to fig. 2 and 3 in combination, the present application provides a flow-type reducing erosion testing device for a large pipe with pressure, which mainly includes a magnetic pump 1, a liquid storage tank 2, a gas steel cylinder 3, a first connecting pipe section 4, a first testing pipe section, a second connecting pipe section 7, a second testing pipe section and a third connecting pipe section 8 connected end to end in sequence; the magnetic pump 1 is connected with the liquid storage tank 2 through a first stop valve 11, and the magnetic pump 1 is used for driving fluid to circulate in a loop; the liquid storage tank 2 is used for providing fluid and heating the fluid in the loop to a specified temperature; the gas steel cylinder 3 is used for providing pipeline pressure; meanwhile, the first connecting pipe section 4, the first test pipe section, the second connecting pipe section 7, the second test pipe section, the third connecting pipe section 8 and the magnetic pump 1 are all connected through a flange 20; and, the first connecting pipe section 4 has the same inner diameter as the third connecting pipe section 8, and the second connecting pipe section 7 has an inner diameter larger than that of the first connecting pipe section 4. Meanwhile, the first test pipe section comprises a first thin pipe section 5, a first reducing pipe section 25 and a first thick pipe section 6 which are sequentially communicated; wherein, the one end of first thin section 5 is connected in first connecting pipe section 4, the other end is connected in the one end of first reducing section 25, the other end of first reducing section 25 is connected in the one end of first thick section 6, the other end of first thick section 6 is connected in second connecting pipe section 7, and the internal diameter of first thin section 5 is the same with the internal diameter of first connecting pipe section 4, the internal diameter of first reducing section 25 is by first thin section 5 towards the direction of first thick section 6 the gradual increase, the internal diameter of first thick section 6 is the same with the internal diameter of second connecting pipe section 7. And, the second test tube section includes a second thin tube section 9, a second variable diameter tube section 26 and a second thick tube section 10 which are sequentially communicated; wherein, one end of the second thick pipe section 10 is connected to the second connecting pipe section 7, the other end is connected to one end of the second reducing pipe section 26, the other end of the second reducing pipe section 26 is connected to one end of the second thin pipe section 9, the other end of the second thin pipe section 9 is connected to the third connecting pipe section 8, and the inner diameter of the second thin pipe section 9 is the same as the inner diameter of the first connecting pipe section 4, the inner diameter of the second reducing pipe section 26 is gradually reduced from the second thick pipe section 10 to the direction of the second thin pipe section 9, and the inner diameter of the second thick pipe section 10 is the same as the inner diameter of the second connecting pipe section 7.
Further, the liquid storage tank 2 comprises a tank body, a second stop valve 12 and an air inlet 13 are arranged at the bottom of the tank body at intervals, a heating rod 14 for heating the fluid in the loop to a specified temperature is arranged in the tank body, a sand inlet 15, a thermometer 16 and a liquid level meter 17 are arranged on the outer side wall at intervals, and a pressure gauge 18 and a liquid inlet 19 are arranged at the top of the tank body at intervals; the thermometer 16 is used for displaying the temperature of the fluid in the tank, the pressure gauge 18 is used for displaying the pressure of the fluid in the tank, and the liquid level gauge 17 is used for indicating the actual liquid level in the tank. At the same time, the tank is connected to the first connecting line 4 via a third shut-off valve 24.
The second connecting pipe section 7 is provided with a flange sight glass 21, and the flange sight glass 21 is used for observing the flow of the fluid in the loop and the distribution of sand grains.
Further, an ultrasonic flowmeter 22 is mounted on the third connecting pipe segment 8, and the ultrasonic flowmeter 22 is used for displaying the flow rate of the fluid in the loop.
The materials of the first connecting pipe section 4, the first test pipe section, the second connecting pipe section 7, the second test pipe section, and the third connecting pipe section 8 are all corrosion-resistant stainless steel.
In addition, in order to be convenient for adjust the velocity of flow of fluid, the motor of magnetic drive pump 1 is connected in the converter, and the converter is connected with the switch board electricity.
Meanwhile, the outer side walls of the first test tube section and the second test tube section are respectively provided with a positioning clamp for clamping a sample to be tested; for convenient operation control, the sample to be tested is connected with an electrochemical workstation through a wire, and the electrochemical workstation is electrically and mechanically connected with the electrochemical workstation.
In order to control the temperature of the fluid in the loop, the heating rod 14 in the tank body is connected with the thermometer 16, and the heating rod 14 and the thermometer 16 are respectively and electrically connected with the control cabinet.
The working principle of the flow type reducing scouring corrosion testing device for the large-pipe-diameter pipe with pressure is as follows:
(1) Placing the electrodes 23 in clamps on the first test tube section and the second test tube section, assembling the first test tube section and the second test tube section into a loop, opening the first stop valve 11 and the third stop valve 24, closing the second stop valve 12, adding gravel through the sand inlet 15, and injecting experimental solution through the liquid inlet 19;
(2) Starting the magnetic pump 1 and the variable frequency control cabinet, starting the heating rod 14, pressurizing the fluid in the loop through the gas steel cylinder 3, and providing the specified temperature and pressure for the fluid;
(3) Carrying out electrochemical test on the sample after flushing for a specified time after the flow speed reaches a specified speed;
(4) After the erosion experiment is finished, the equipment is closed; the second stop valve 12 is opened to discharge the solution; disassembling the electrode 23 and weighing;
(5) The flow type reducing scouring corrosion testing device for the large-pipe-diameter pipe with pressure is cleaned, and residual corrosive liquid and gravel in a loop are removed.
The reducer pipe is often used to connect pipelines with different pipe diameters in the oil gas production process so as to achieve the effect of adjusting flow, when fluid flows through the reducer pipe section, the pipe diameter change causes the change of fluid dynamic parameters such as flow velocity, shearing stress, solid particle concentration and the like at the position, and then the erosion corrosion rate of different positions of the reducer pipe is caused to be different. Therefore, the device can develop multiphase flow erosion corrosion experiments of the high-pressure reducer pipe section, realize dynamic in-situ electrochemical tests, and clear erosion corrosion mechanisms at different positions of the reducer pipe and influence effects of factors such as flow rate, solid particle speed, solid particle size, temperature, ph, CO 2 partial pressure and the like on the high-pressure erosion corrosion of the reducer pipe, thereby providing valuable theoretical guidance for the protection of the high-pressure erosion corrosion of the reducer pipe section.
In summary, in the flow type reducing erosion testing device for the large-pipe diameter pipe with pressure, the device can develop multiphase flow erosion testing of the high-pressure reducing pipe section, realize dynamic in-situ electrochemical testing, and clear the erosion mechanism at different positions of the reducing pipe and the influence of factors such as flow velocity, solid particle speed, solid particle size, temperature, ph, CO 2 partial pressure and the like on the high-pressure erosion of the reducing pipe, thereby providing valuable theoretical guidance for the protection of the high-pressure erosion of the reducing pipe section. Meanwhile, the erosion corrosion experimental data of different positions of the gradually-enlarged pipe section and the gradually-reduced pipe section can be obtained through one experiment, so that the experimental cost is saved, and the experimental efficiency is improved.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The flow type reducing scouring corrosion testing device for the large-pipe-diameter pipe with pressure is characterized by comprising a magnetic pump, a liquid storage tank, a gas steel cylinder, a first connecting pipe section, a first testing pipe section, a second connecting pipe section, a second testing pipe section and a third connecting pipe section which are connected end to end in sequence; the magnetic pump is used for driving fluid to circulate in the loop; the liquid storage tank is used for providing fluid and heating the fluid in the loop to a specified temperature; the gas steel cylinder is used for providing pipeline pressure; the inner diameter of the first connecting pipe section is the same as that of the third connecting pipe section, and the inner diameter of the second connecting pipe section is larger than that of the first connecting pipe section; the first test pipe section comprises a first thin pipe section, a first variable-diameter pipe section and a first thick pipe section which are sequentially communicated, one end of the first thin pipe section is connected with the first connecting pipe section, the other end of the first variable-diameter pipe section is connected with one end of the first thick pipe section, the other end of the first thick pipe section is connected with one end of the second connecting pipe section, the inner diameter of the first thin pipe section is the same as the inner diameter of the first connecting pipe section, the inner diameter of the first variable-diameter pipe section gradually increases from the first thin pipe section to the direction of the first thick pipe section, and the inner diameter of the first thick pipe section is the same as the inner diameter of the second connecting pipe section; the second test tube section comprises a second thick tube section, a second reducing tube section and a second thin tube section which are sequentially communicated, one end of the second thick tube section is connected with the other end of the second connecting tube section, the other end of the second reducing tube section is connected with one end of the second thin tube section, the other end of the second thin tube section is connected with the third connecting tube section, the inner diameter of the second thin tube section is the same as the inner diameter of the first connecting tube section, the inner diameter of the second reducing tube section gradually decreases from the second thick tube section to the direction of the second thin tube section, and the inner diameter of the second thick tube section is the same as the inner diameter of the second connecting tube section.
2. The pressurized large-pipe diameter pipe flow type reducing erosion corrosion test device according to claim 1, wherein the magnetic pump is connected with the liquid storage tank through a first stop valve.
3. The pressurized large-pipe-diameter pipe flow type reducing erosion corrosion test device according to claim 1, wherein the liquid storage tank comprises a tank body; the bottom of the tank body is provided with a second stop valve and an air inlet at intervals, a heating rod for heating the fluid in the loop to a specified temperature is arranged in the tank body, a sand inlet, a thermometer and a liquid level meter are arranged on the outer side wall at intervals, and a pressure gauge and a liquid inlet are arranged on the top of the tank body at intervals; the thermometer is used for displaying the temperature of the fluid in the tank body, the pressure gauge is used for displaying the pressure of the fluid in the tank body, and the liquid level gauge is used for indicating the actual liquid level height of the liquid in the tank body.
4. The pressurized large pipe diameter pipe flow type reducing erosion corrosion test device according to claim 1, wherein the liquid storage tank is connected with the first connecting pipe section through a third stop valve.
5. The pressurized large-pipe diameter pipe flow type reducing erosion corrosion test device according to claim 1, wherein the first connecting pipe section, the first test pipe section, the second connecting pipe section, the second test pipe section, the third connecting pipe section and the magnetic pump are all connected through flanges.
6. The pressurized large-diameter pipe flow type reducing erosion corrosion test device according to claim 1, wherein a flange sight glass is installed on the second connecting pipe section, and the flange sight glass is used for observing the flow of fluid in a loop and the distribution condition of sand grains.
7. The pressurized large-diameter pipe flow type reducing erosion corrosion test device according to claim 1, wherein an ultrasonic flowmeter is installed on the third connecting pipe section, and the ultrasonic flowmeter is used for displaying the flow rate of the fluid in the loop.
8. The pressurized large pipe diameter pipe flow type reducing erosion corrosion test device according to claim 1, wherein the materials of the first connecting pipe section, the first test pipe section, the second connecting pipe section, the second test pipe section and the third connecting pipe section are all corrosion resistant stainless steel.
9. The device for testing the flow-type reducing erosion corrosion of the large-pipe-diameter pipe with pressure according to claim 1, wherein a motor of the magnetic pump is connected to a frequency converter, and the frequency converter is electrically connected with a control cabinet.
10. The flow-type reducing erosion corrosion test device for the large-diameter pipe with pressure according to claim 1, wherein the outer side walls of the first test pipe section and the second test pipe section are provided with positioning fixtures for clamping a sample to be tested, the sample to be tested is connected with an electrochemical workstation through a wire, and the electrochemical workstation is electrically and mechanically connected with the electrochemical workstation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210349784.3A CN114791401B (en) | 2022-04-02 | 2022-04-02 | Flow type reducing scouring corrosion testing device for large-pipe-diameter pipe with pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210349784.3A CN114791401B (en) | 2022-04-02 | 2022-04-02 | Flow type reducing scouring corrosion testing device for large-pipe-diameter pipe with pressure |
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| Publication Number | Publication Date |
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| CN114791401A CN114791401A (en) | 2022-07-26 |
| CN114791401B true CN114791401B (en) | 2024-06-18 |
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| CN202210349784.3A Active CN114791401B (en) | 2022-04-02 | 2022-04-02 | Flow type reducing scouring corrosion testing device for large-pipe-diameter pipe with pressure |
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| CN115266307A (en) * | 2022-08-04 | 2022-11-01 | 西南石油大学 | Test device for testing erosion of high-temperature and high-pressure oil well pipe with cement sheath |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4272383A (en) * | 1978-03-17 | 1981-06-09 | Mcgrew Jay Lininger | Method and apparatus for effecting subsurface, controlled, accelerated chemical reactions |
| US4267148A (en) * | 1979-12-10 | 1981-05-12 | Shell Oil Company | Corrosion monitoring and testing system |
| CN105842097A (en) * | 2016-03-24 | 2016-08-10 | 西南石油大学 | High-temperature high-pressure tubular-flow erosion corrosion experiment device |
| CN106124393A (en) * | 2016-08-23 | 2016-11-16 | 上海交通大学 | Flowing accelerated corrosion assay device and using method thereof |
| CN108007766A (en) * | 2018-01-14 | 2018-05-08 | 常州大学 | Fluid-guiding type reducing erosion corrosion test device |
| CN109856036A (en) * | 2018-12-27 | 2019-06-07 | 中国石油工程建设有限公司 | A kind of high temperature and pressure gas, liquid, solid three-phase erosion corrosion test device and method |
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