CN104931406A - Tester for realizing steady-flow erosion corrosion - Google Patents
Tester for realizing steady-flow erosion corrosion Download PDFInfo
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- CN104931406A CN104931406A CN201510237297.8A CN201510237297A CN104931406A CN 104931406 A CN104931406 A CN 104931406A CN 201510237297 A CN201510237297 A CN 201510237297A CN 104931406 A CN104931406 A CN 104931406A
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Abstract
The invention belongs to the technical field of chemical reaction equipment, and relates to a tester for realizing steady-flow erosion corrosion. A solution medium beaker is arranged on the inner wall of a stainless steel beaker body of a reaction still; a sample containing beaker is arranged in the solution medium beaker holding a solution medium; a sample is arranged in the sample containing beaker; a sample placing window is formed in the side wall of the sample containing beaker; a polytetrafluoroethylene sample beaker fixing cover covers the sample containing beaker; two polytetrafluoroethylene locking holes are symmetrically formed in the polytetrafluoroethylene sample beaker fixing cover; a stainless steel sample beaker fixing cover of which the middle part is an opening covers the top end of the solution medium beaker; two stainless steel locking holes are symmetrically formed in the stainless steel sample beaker fixing cover; a blade is arranged in the solution medium beaker; a gasket is embedded in the inner wall of the middle opening of the stainless steel sample beaker fixing cover. The tester is simple in structure, and convenient in operation; the sample can be easily fixed; the processing requirement is low; the flow rate is easy to control; accurate measurement of the material corrosion performance is realized; the reliability and the accuracy of the material failure condition criteria are improved.
Description
Technical field:
The invention belongs to chemical reaction device technical field, relate to a kind of test unit realizing current stabilization erosion corrosion in high-temperature high-pressure reaction kettle, realize the Measurement accuracy of the corrosive nature under high temperature, high pressure, strong acid, high low flow velocity to metal material and nonmetallic materials.
Background technology:
Along with the development of petroleum industry, coal, oil and natural gas well mining depth improve gradually, and down-hole and traffic condition are day by day severe, and the souring of High Temperature High Pressure in corrosive medium can cause strong erosion to material, and material failure can cause a lot of danger.Therefore, the industrial transport to coal, oil and natural gas and drilling material are had higher requirement, whether meet complex working conditions restriction to investigate material, whether the environment that washes away under High Temperature High Pressure and strong acid can be safe and reliable, needs to detect its correlated performance.
Stainless steel cauldron disclosed in prior art is generally containing heat preservation sandwich layer, oil bath zone of heating and stainless steel layer, stainless steel cauldron because its price is low, good heat conductivity and being widely used, but stainless steel material acid-proof alkaline is poor, at present, Chinese patent 201220543710.5 discloses a kind of reactor being lining with one deck anti-corrosion material or polytetrafluoroethylmaterial material at stainless inwall, but this reactor can not the erosion corrosion of test material; Chinese patent 200910135692.X discloses a kind of for simulating actual test method of washing away operating mode, the fixture that sample is housed is fixed in the rotating shaft of high-temperature high-pressure reaction kettle, the method is to the processing of sample and rotating shaft and be provided with very high requirement, rotating shaft is in rotary course, the flowing of meeting disturbance surrounding liquid medium, certainly will vortes interference be produced, the accurate control of material flow rates cannot be ensured.Therefore, seek a kind of test unit realizing current stabilization erosion corrosion in high-temperature high-pressure reaction kettle, existing reactor equipment can be overcome and accurately can not control the shortcoming that the high and sample of flow velocity between material and medium, sample processing request is not easy to fix, realize material its corrosive nature of Measurement accuracy under high temperature, high pressure, strong acid, high low flow velocity, the inefficacy for material provides passes judgment on data reliably.
Summary of the invention:
The object of the invention is to the shortcoming overcoming prior art existence, the defect that the high and sample of flow velocity between material and medium, sample processing request is not easy to fix accurately can not be controlled for current reactor equipment, design provides a kind of test unit realizing current stabilization erosion corrosion in high-temperature high-pressure reaction kettle, realize the Measurement accuracy of material corrosive nature under high temperature, high pressure, strong acid, high low flow velocity, improve reliability and the accuracy of material failure condition criterion.
To achieve these goals, agent structure of the present invention comprises blade, pad, stainless steel keeper, stainless steel sample cup fixed cap, polytetrafluoro sample cup fixed cap, polytetrafluoro keeper, sample placement window, sample cup placement and solution medium cup; The solution medium cup that polytetrafluoro material is made is arranged on the stainless steel cup inwall of existing reactor, and solution medium cup and stainless steel cup fit tightly, and after reactor pressure release, solution medium cup can freely take out; The sample cup placement that polytetrafluoro material is made is placed on and fills in the solution medium cup of solution medium, sample is placed with in sample cup placement, sample cup placement sidewall is opened and is shaped with sample placement window, sample cup placement is stamped polytetrafluoro sample cup fixed cap, on polytetrafluoro sample cup fixed cap, symmetrical expression is opened and is shaped with two polytetrafluoro keepers; The stainless steel sample cup fixed cap of central aperture is stamped on the top of solution medium cup, on stainless steel sample cup fixed cap, symmetrical expression is opened and is shaped with two stainless steel keepers, the blades installation of spider structure is in solution medium cup, from top to bottom successively through sample cup placement, polytetrafluoro sample cup fixed cap and stainless steel sample cup fixed cap, on the central aperture inwall of stainless steel sample cup fixed cap, installation by adhering has pad.
Solution medium of the present invention comprises strong acid, highly basic and corrosive organic solution.
Blade of the present invention adopts to be made containing the resistance to strong corrosion resistant metal such as silicon cast iron or Hastelloy, and the girth of blade and blade are not less than 60 to the distance ratio of sample.
The test pressure realizing the test unit of current stabilization erosion corrosion of the present invention is 0-270Mpa, and temperature is 0-300 DEG C, and the rotating speed of sample in solution medium is 0-2m/s.
When the present invention uses, sample cup placement is put into after first sample being cut into T font, and one side to be tested for sample is embedded in sample placement window, again sample cup placement is put into solution medium cup, blade is inserted polytetrafluoro sample cup fixed cap, put into pad simultaneously, tighten polytetrafluoro sample cup fixed cap with existing tight cup tools for alignment polytetrafluoro keeper; Then solution medium cup is put into the stainless steel cup of reactor, aim at stainless steel keeper and tighten stainless steel sample cup fixed cap, stainless steel cup is fixed in reactor, test after finally setting the test parameters of test pressure, probe temperature and sample rotating speed, complete current stabilization erosion corrosion test.
The present invention compared with prior art, overcome the flow velocity that current reactor equipment can not accurately control between material and medium, sample processing request height and sample are not easy the shortcoming of fixing, its structure is simple, and easy to operate, sample is easily fixed, processing request is low, flow velocity is easily controlled, and realizes the Measurement accuracy of material corrosive nature under high temperature, high pressure, strong acid, high low flow velocity, improves reliability and the accuracy of material failure condition criterion.
Accompanying drawing illustrates:
Fig. 1 is agent structure principle schematic of the present invention.
Fig. 2 is the main TV structure principle schematic of blade of the present invention.
Fig. 3 is the plan structure principle schematic of blade of the present invention.
Embodiment:
Below by embodiment, also the invention will be further described by reference to the accompanying drawings.
Embodiment 1:
The agent structure of the present embodiment comprises blade 1, pad 2, stainless steel keeper 3, stainless steel sample cup fixed cap 4, polytetrafluoro sample cup fixed cap 5, polytetrafluoro keeper 6, sample placement window 7, sample cup placement 8 and solution medium cup 9; The solution medium cup 9 that polytetrafluoro material is made is arranged on the stainless steel cup inwall of existing reactor, and solution medium cup 9 and stainless steel cup are combined closely, and after reactor pressure release, solution medium cup 9 can freely take out; The sample cup placement 8 that polytetrafluoro material is made is placed on and fills in the solution medium cup 9 of solution medium, sample cup placement 8 sidewall is opened and is shaped with sample placement window 7, sample cup placement 8 is stamped polytetrafluoro sample cup fixed cap 5, on polytetrafluoro sample cup fixed cap 5, symmetrical expression is opened and is shaped with two polytetrafluoro keepers 6; The stainless steel sample cup fixed cap 4 of central aperture is stamped on the top of solution medium cup 9, on stainless steel sample cup fixed cap 4, symmetrical expression is opened and is shaped with two stainless steel keepers 3, the blade 1 of spider structure is arranged in solution medium cup 9, from top to bottom successively through sample cup placement 8, polytetrafluoro sample cup fixed cap 5 and stainless steel sample cup fixed cap 4, on the central aperture inwall of stainless steel sample cup fixed cap 4, installation by adhering has pad 2.
Solution medium described in the present embodiment comprises strong acid, highly basic and corrosive organic solution.
Blade 1 described in the present embodiment adopts to be made containing the resistance to strong corrosion resistant metal such as silicon cast iron or Hastelloy, and the girth of blade 1 is not less than 60 with the distance ratio of sample in blade 1 to sample cup placement 8.
The test pressure realizing the test unit of current stabilization erosion corrosion described in the present embodiment is 0-270Mpa, and temperature is 0-300 DEG C, and the rotating speed of sample in solution medium is 0-2m/s.
When the present embodiment uses, sample cup placement 8 is put into after first sample being cut into T font, and one side to be tested for sample is embedded in sample placement window 7, again sample cup placement 8 is put into solution medium cup 9, blade 1 is inserted polytetrafluoro sample cup fixed cap 5, put into pad 2 simultaneously, tighten polytetrafluoro sample cup fixed cap 5 with existing tight cup tools for alignment polytetrafluoro keeper 6; Then solution medium cup 9 is put into the stainless steel cup of reactor, aim at stainless steel keeper 3 and tighten stainless steel sample cup fixed cap 4, stainless steel cup is fixed in reactor, finally set test parameters and test, complete current stabilization erosion corrosion test.
Embodiment 2:
The present embodiment cuts 3 and acidproofly turns parallel sample, surface topography is carried out after being dried by sample clean, the test of initial weight and surface area and record, window 7 placed by the sample that sample cup placement 8 put into by sample, be 31% according to concentration of hydrochloric acid, concentration of aluminum chloride is that 200g/L is mixed with testing liquid, testing liquid is poured in solution medium cup 9, sample cup placement 8 is put into solution medium cup 9 simultaneously, again blade 1 is inserted in polytetrafluoro sample cup fixed cap 5, put into pad 2, polytetrafluoro sample cup fixed cap 5 is tightened with tight cup tools for alignment polytetrafluoro keeper 6, then solution medium cup 9 is put into stainless steel cup, aim at stainless steel keeper 3 and tighten stainless steel sample cup fixed cap 4, stainless steel cup is fixing in a kettle., setting test temperature is 180 DEG C, pressure is 16Mpa, flow velocity is 0-2m/s, test period is 20 days, after off-test, after taking out sample, sample cleared up and dry, sample is carried out to the observation of surface topography, the corrosion rate calculating three samples is respectively 2.8712mm/a, 2.4108mm/a and 2.3026mm/a.
Claims (5)
1. realize a test unit for current stabilization erosion corrosion, it is characterized in that agent structure comprises blade, pad, stainless steel keeper, stainless steel sample cup fixed cap, polytetrafluoro sample cup fixed cap, polytetrafluoro keeper, sample placement window, sample cup placement and solution medium cup; The solution medium cup that polytetrafluoro material is made is arranged on the stainless steel cup inwall of existing reactor, and solution medium cup and stainless steel cup fit tightly, and after reactor pressure release, solution medium cup can freely take out; The sample cup placement that polytetrafluoro material is made is placed on and fills in the solution medium cup of solution medium, sample is placed with in sample cup placement, sample cup placement sidewall is opened and is shaped with sample placement window, sample cup placement is stamped polytetrafluoro sample cup fixed cap, on polytetrafluoro sample cup fixed cap, symmetrical expression is opened and is shaped with two polytetrafluoro keepers; The stainless steel sample cup fixed cap of central aperture is stamped on the top of solution medium cup, on stainless steel sample cup fixed cap, symmetrical expression has two stainless steel keepers, the blades installation of spider structure is in solution medium cup, from top to bottom successively through sample cup placement, polytetrafluoro sample cup fixed cap and stainless steel sample cup fixed cap, on the central aperture inwall of stainless steel sample cup fixed cap, installation by adhering has pad.
2. realize the test unit of current stabilization erosion corrosion according to claim 1, it is characterized in that described solution medium comprises strong acid, highly basic and corrosive organic solution.
3. realize the test unit of current stabilization erosion corrosion according to claim 1, it is characterized in that described blade adopts and make containing silicon cast iron or the resistance to strong corrosion resistant metal of Hastelloy, the girth of blade and blade are not less than 60 to the distance ratio of sample.
4. realize the test unit of current stabilization erosion corrosion according to claim 1, it is characterized in that the described test pressure realizing the test unit of current stabilization erosion corrosion is 0-270Mpa, probe temperature is 0-300 DEG C, and the rotating speed of sample in solution medium is 0-2m/s.
5. realize the test unit of current stabilization erosion corrosion according to claim 1, when it is characterized in that using this device to test, sample cup placement is put into after first sample being cut into T font, and one side to be tested for sample is embedded in sample placement window, again sample cup placement is put into solution medium cup, blade is inserted polytetrafluoro sample cup fixed cap, put into pad simultaneously, tighten polytetrafluoro sample cup fixed cap with existing tight cup tools for alignment polytetrafluoro keeper; Then solution medium cup is put into the stainless steel cup of reactor, aim at stainless steel keeper and tighten stainless steel sample cup fixed cap, stainless steel cup is fixed in reactor, test after finally setting the test parameters of test pressure, probe temperature and sample rotating speed, complete current stabilization erosion corrosion test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510237297.8A CN104931406A (en) | 2015-05-12 | 2015-05-12 | Tester for realizing steady-flow erosion corrosion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510237297.8A CN104931406A (en) | 2015-05-12 | 2015-05-12 | Tester for realizing steady-flow erosion corrosion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111699153A (en) * | 2018-02-16 | 2020-09-22 | 水道6有限公司 | Thermal management |
| CN114354472A (en) * | 2021-12-28 | 2022-04-15 | 中国特种设备检测研究院 | Intensive oil dynamic corrosion test device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0174768A2 (en) * | 1984-08-31 | 1986-03-19 | CITIES SERVICE OIL & GAS CORPORATION | A corrosion probe and method for measuring corrosion rates |
| CN2718566Y (en) * | 2004-06-30 | 2005-08-17 | 宝山钢铁股份有限公司 | High-pressure autoclave |
| CN101576471A (en) * | 2009-04-27 | 2009-11-11 | 中国石油大学(北京) | Test device for realizing multiphase pipe flow and washing erosion in high-temperature high-pressure reaction kettle |
| US20100117622A1 (en) * | 2008-11-10 | 2010-05-13 | Saudi Arabian Oil Company | Method and apparatus for estimating the condition of a coating on an underground pipeline |
| CN102654446A (en) * | 2012-05-18 | 2012-09-05 | 西南石油大学 | High-temperature high-pressure multiphase flow corrosion testing method and device |
| CN102680384A (en) * | 2012-05-18 | 2012-09-19 | 西南石油大学 | High-temperature and high-pressure flowing device for evaluating corrosion resistance performance of materials |
| CN202614645U (en) * | 2012-04-06 | 2012-12-19 | 中国石油天然气集团公司 | Multi-flow-speed simulation test device for high-pressure autoclave |
-
2015
- 2015-05-12 CN CN201510237297.8A patent/CN104931406A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0174768A2 (en) * | 1984-08-31 | 1986-03-19 | CITIES SERVICE OIL & GAS CORPORATION | A corrosion probe and method for measuring corrosion rates |
| CN2718566Y (en) * | 2004-06-30 | 2005-08-17 | 宝山钢铁股份有限公司 | High-pressure autoclave |
| US20100117622A1 (en) * | 2008-11-10 | 2010-05-13 | Saudi Arabian Oil Company | Method and apparatus for estimating the condition of a coating on an underground pipeline |
| CN101576471A (en) * | 2009-04-27 | 2009-11-11 | 中国石油大学(北京) | Test device for realizing multiphase pipe flow and washing erosion in high-temperature high-pressure reaction kettle |
| CN202614645U (en) * | 2012-04-06 | 2012-12-19 | 中国石油天然气集团公司 | Multi-flow-speed simulation test device for high-pressure autoclave |
| CN102654446A (en) * | 2012-05-18 | 2012-09-05 | 西南石油大学 | High-temperature high-pressure multiphase flow corrosion testing method and device |
| CN102680384A (en) * | 2012-05-18 | 2012-09-19 | 西南石油大学 | High-temperature and high-pressure flowing device for evaluating corrosion resistance performance of materials |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111699153A (en) * | 2018-02-16 | 2020-09-22 | 水道6有限公司 | Thermal management |
| CN111699153B (en) * | 2018-02-16 | 2023-08-22 | 水道6有限公司 | thermal management |
| CN114354472A (en) * | 2021-12-28 | 2022-04-15 | 中国特种设备检测研究院 | Intensive oil dynamic corrosion test device |
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