CN214097091U - Resistance probe detection device for rapidly comparing corrosion resistance of material - Google Patents
Resistance probe detection device for rapidly comparing corrosion resistance of material Download PDFInfo
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- CN214097091U CN214097091U CN202023013294.1U CN202023013294U CN214097091U CN 214097091 U CN214097091 U CN 214097091U CN 202023013294 U CN202023013294 U CN 202023013294U CN 214097091 U CN214097091 U CN 214097091U
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Abstract
The utility model provides a resistance probe detection device of quick comparative material corrosion resisting property, including pin (1), probe pole (2), encapsulation resin (3), wire (4) and corrosion element (5), its characterized in that, probe pole (2) are hollow structure, and its one end sets up pin (1), and the other end sets up corrosion element (5), and pin (1) and corrosion element (5) are connected through wire (4) in probe pole (2) inside, and probe pole (2) inside packing encapsulation resin (3). The utility model provides a resistance probe detection method of material corrosion resistance is compared fast for solve lacing film method screening material cycle length, poor, the operating environment is abominable, the inefficiency scheduling problem. Meanwhile, the problem that the traditional resistance probe cannot simultaneously compare the corrosion resistance of different materials is solved.
Description
Technical Field
The utility model belongs to the technical field of the corrosion monitoring and specifically relates to a resistance probe detection device of quick comparison material corrosion resisting property.
Background
Most of the devices and equipment in the oil refining and chemical industry have corrosion. In order to deal with equipment corrosion, the materials are screened except for carrying out process improvement and corrosion prevention, and the materials suitable for specific working conditions are selected.
The method for screening the materials mainly adopts a hanging piece method, the hanging piece method is long in period, low in efficiency, poor in flexibility and severe in installation working environment, the corrosion conditions of the hanging pieces before and after the test can be only compared, and the change condition of the corrosion process of the materials in the medium environment cannot be inspected. It is necessary to develop a simple, convenient and quick device for screening corrosion-resistant materials to solve the defects of the hanging sheet method.
The resistance probe is an online corrosion monitoring method and is used for monitoring the corrosion condition of equipment in real time, and is designed by utilizing the principle that the section area is reduced and the resistance value is increased when a metal material is corroded. The resistance probe is made into a corrosion element by adopting carbon steel or the material the same as the material of the equipment, the corrosion element is immersed into the medium of the equipment, the pipeline and the like, the thinning amount of the corrosion element is calculated according to the change amount of the resistance value of the corrosion element, and the corrosion condition of the equipment is evaluated according to the corrosion condition of the corrosion element. The resistance probe has the advantages of simple and rapid measurement, rapid signal feedback, capability of reflecting the corrosion change trend in the operation process of equipment in time and the like.
The prior art CN202421039U provides a metal corrosion rate detection device with a temperature detection dual-strip probe, which comprises a dual-strip probe, a probe adapter, a power communication adapter, a metal corrosion rate detector, and a detection circuit. The dual-test-piece probe comprises a first corrosion test piece, a second corrosion test piece, a first compensation test piece, a second compensation test piece and the like, and can simultaneously measure the corrosion rates of the two test pieces. The probe corrosion test piece is of a tubular structure, the compensation test piece is welded inside the probe corrosion test piece, the probe structure is complex, the preparation is difficult, and after the tubular corrosion test piece is corroded and perforated, a corrosion medium can enter the tube to be in contact with the compensation test piece, so that the safety of the temperature compensation test piece is influenced. Because the probe is used for detecting the corrosion condition of the equipment, one of the two corrosion test pieces of the probe is required to be the same as the material of the equipment.
The purpose of traditional resistance probe is used for monitoring the equipment corrosion condition, therefore in order to avoid the influence of temperature fluctuation, need set up the compensation coupon except setting up the corrosion coupon to the influence of correction temperature to resistance, thereby the more accurate corrosion condition of feedback equipment of the change condition through resistance. The conventional resistance probe has a complicated structure due to the need of using a compensation strip. In addition, because the corrosion condition of the equipment needs to be monitored, the existing probe, no matter a single corrosion test piece or a double corrosion test piece, needs to have a corrosion test piece made of carbon steel or metal which is the same as the material of the equipment, so that the corrosion test piece used by the traditional probe has limitation and cannot be flexibly changed.
SUMMERY OF THE UTILITY MODEL
For overcoming current defect, the utility model provides a resistance probe detection device of quick comparison material corrosion resisting property.
The utility model provides a resistance probe detection device of quick comparative material corrosion resisting property, includes pin, probe pole, encapsulation resin, wire and corrosion element, the probe pole is hollow structure, and its one end sets up the pin, and the other end sets up corrosion element, and pin and corrosion element pass through the wire and connect in probe pole inside, and probe pole inside is filled encapsulation resin.
The corrosion element is of a U-shaped structure, the opening end of the corrosion element is arranged in the probe rod, and the two tail ends of the opening end of the corrosion element are respectively connected with respective pins through leads.
Preferably, the corrosion element is plural; the pin is a plurality of. And a plurality of corrosion test pieces are arranged, so that the efficiency of the corrosion resistance of the comparative material is improved.
Alternatively, the shape of the corrosion element is of the "U" type; the corrosion element adopts a filiform structure or a sheet structure.
The corrosion element is arranged in a corrosion medium, the pin is connected with a resistance meter, and the corrosion resistance of the corrosion test piece is judged through resistance change. Because the relative value of the resistance of the corrosion test piece is directly compared, the absolute value of the resistance is not needed, and therefore, a temperature compensation test piece is not needed, the structure of the resistance probe device is simpler, and the cost is lower.
The utility model provides a resistance probe detection method of material corrosion resistance is compared fast for solve lacing film method screening material cycle length, poor, the operating environment is abominable, the inefficiency scheduling problem. Meanwhile, the problem that the traditional resistance probe cannot simultaneously compare the corrosion resistance of different materials is solved.
Drawings
FIG. 1 is a schematic diagram of a resistance probe detection device for rapidly comparing the corrosion resistance of materials.
FIG. 2 is a graph showing the resistance change in example 1.
FIG. 3 is a graph showing the resistance change in example 2.
Detailed Description
The following describes in detail a resistance probe detection apparatus for comparing the corrosion resistance of a material quickly according to the present invention with reference to the accompanying drawings and specific embodiments.
Fig. 1 shows that a resistance probe detection device for rapidly comparing corrosion resistance of a material comprises a pin 1, a probe rod 2, packaging resin 3, a wire 4 and a corrosion element 5, wherein the probe rod 2 is of a hollow structure, one end of the probe rod is provided with the pin 1, the other end of the probe rod is provided with the corrosion element 5, the pin 1 and the corrosion element 5 are connected inside the probe rod 2 through the wire 4, and the packaging resin 3 is filled inside the probe rod 2.
The corrosion element 5 is of a U-shaped structure, the opening end of the corrosion element 5 is arranged in the probe rod 2, and the two tail ends of the opening end of the corrosion element 5 are respectively connected with the respective pins 1 through the leads 4.
A plurality of corrosion elements 5; the number of the pins 1 is plural.
The shape of the corrosion element 5 is of the "U" type; the corrosion elements 5 are in a filiform or sheet-like structure.
The corrosion element 5 is arranged in a corrosion medium, the pin 1 is connected with a resistance meter, and the corrosion resistance of the corrosion test piece is judged through resistance change.
The characteristic that the resistance of metal is in inverse proportion to the sectional area is utilized, the metal is corroded to reduce the sectional area, so that the resistance of the metal is increased, and the resistance change condition of different metal materials in a corrosive medium is measured by utilizing the principle to evaluate the corrosion resistance of the different materials. The faster the resistance of the corrosion element increases in the corrosive medium, the faster the reduction in cross-sectional area, i.e. the faster the corrosion, the less corrosion resistant. Therefore, the resistance change condition of the corrosion test pieces in the corrosion medium is measured by using the resistance meter, and the strength of the corrosion resistance between the corrosion test pieces can be directly judged.
Example 1
In one embodiment, a probe containing corrosion element A (304 stainless steel) and corrosion element B (304+ CTS stainless steel, surface treated 304 stainless steel) was immersed in a 6% by mass ferric chloride solution at a 50 ℃ solution temperature for corrosion testing. The resistance values of the corrosion elements a and B were measured and recorded, respectively, as a function of time in an iron trichloride solution, and the results of the measurements are shown in fig. 2. From the resistance values, it was found that the mass loss rate of corrosion element a was 19.17% and the mass loss rate of corrosion element B was 0 from 14:00 at 5.5.12.2019 to 15:30 at 5.5.12.2019. Under the corrosive environment of ferric trichloride, the corrosion resistance of 304+ CTS stainless steel is stronger than that of 304 stainless steel, which shows that the novel resistance probe can be used for rapidly comparing the difference of the corrosion resistance of materials and rapidly screening the materials.
Example 2
In another example, a probe containing corrosion element a (carbon steel wire whose surface was nickel-plated) and corrosion element B (carbon steel wire whose surface was blackened) was immersed in a 2% hydrochloric acid solution at a temperature of 50 ℃. The resistance values of the corrosion elements a and B were measured and recorded, respectively, as a function of time in a hydrochloric acid solution, and the results of the measurement are shown in fig. 3. As can be calculated from the resistance values, the mass loss rate of corrosion element a was 40.15% and the mass loss rate of corrosion element B was 21.13% from 18:00 at 27.3/27/2020 to 21:00 at 27/3/2020. Under the hydrochloric acid corrosion environment, the corrosion resistance of the blackened carbon steel is stronger than that of the nickel-plated carbon steel, which shows that the novel resistance probe can be used for rapidly comparing the difference of the corrosion resistance of materials and screening the materials rapidly.
Finally, it should be noted that the above embodiments are only intended to describe the technical solution of the present invention and not to limit the technical method, the present invention can be extended to other modifications, changes, applications and embodiments in application, and all such modifications, changes, applications, embodiments are therefore considered to be within the spirit and teaching scope of the present invention.
Claims (5)
1. The utility model provides a resistance probe detection device of rapid comparison material corrosion resisting property, includes pin (1), probe pole (2), encapsulation resin (3), wire (4) and corrosion element (5), its characterized in that, probe pole (2) are hollow structure, and its one end sets up pin (1), and the other end sets up corrosion element (5), and pin (1) and corrosion element (5) are inside to be connected through wire (4) in probe pole (2), and probe pole (2) inside packing resin (3).
2. The resistance probe detection device for rapidly comparing the corrosion resistance of materials according to claim 1, wherein the corrosion element (5) is of a U-shaped structure, the open end of the corrosion element (5) is arranged in the probe rod (2), and two ends of the open end of the corrosion element (5) are respectively connected with the respective pins (1) through wires (4).
3. The resistance probe detection device for rapidly comparing the corrosion resistance of materials according to claim 1, wherein the corrosion element (5) is a plurality; the number of the pins (1) is multiple.
4. The resistance probe detection apparatus for rapidly comparing corrosion resistance of materials according to claim 1, wherein the shape of the corrosion element (5) is of the "U" type; the corrosion element (5) adopts a filiform structure or a sheet structure.
5. The resistance probe detection device for rapidly comparing the corrosion resistance of materials according to claim 1, wherein the corrosion element (5) is placed in a corrosive medium, the pin (1) is connected with a resistance meter, and the corrosion resistance of the corrosion test piece is judged through resistance change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023013294.1U CN214097091U (en) | 2020-12-15 | 2020-12-15 | Resistance probe detection device for rapidly comparing corrosion resistance of material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023013294.1U CN214097091U (en) | 2020-12-15 | 2020-12-15 | Resistance probe detection device for rapidly comparing corrosion resistance of material |
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| Publication Number | Publication Date |
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| CN214097091U true CN214097091U (en) | 2021-08-31 |
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| CN202023013294.1U Active CN214097091U (en) | 2020-12-15 | 2020-12-15 | Resistance probe detection device for rapidly comparing corrosion resistance of material |
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Effective date of registration: 20220506 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: SHENZHEN CANDORTECH Inc.,Co. Patentee after: SINOPEC ENGINEERING Inc. Address before: 518057 307-308, F3, Gaobei 16 B2 office building, No. 16, Gaoxin North 6th Road, songpingshan community, Xili street, Nanshan District, Shenzhen, Guangdong Patentee before: SHENZHEN CANDORTECH Inc.,Co. |