CN115127984A - Corrosion warning sensor - Google Patents
Corrosion warning sensor Download PDFInfo
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- CN115127984A CN115127984A CN202210760601.7A CN202210760601A CN115127984A CN 115127984 A CN115127984 A CN 115127984A CN 202210760601 A CN202210760601 A CN 202210760601A CN 115127984 A CN115127984 A CN 115127984A
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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
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The application provides a corrosion warning sensor, which relates to the field of corrosion monitoring and comprises a metal shell, a test piece group, a variable conductor, a circuit unit and a warning device, wherein the metal shell is at least provided with an opening part; the variable conductor is arranged on the top of each test piece of the test piece group; the circuit unit is electrically connected with the variable conductor and the metal shell at the top of each test piece, after the variable conductor corresponding to the top of the test piece is converted into the conductor due to corrosion penetration, the warning circuit formed by the test piece, the variable conductor, the metal shell, the corrosion medium and the circuit unit is conducted, and the circuit unit generates a corrosion monitoring signal; and the warning device is connected with the circuit unit and used for expressing the corrosion monitoring signal in a warning form. The corrosion warning sensor can accurately monitor the corrosion degree of the part and carry out real-time visualized early warning.
Description
Technical Field
The invention relates to the field of corrosion monitoring, in particular to a corrosion warning sensor.
Background
In daily life and production, the damage to appliances or equipment or the condition of causing accidents due to corrosion are rare, and according to statistics, the direct economic loss due to metal corrosion accounts for 2 to 4 percent of the total value of national economy and far exceeds the sum of flood, fire, wind and earthquake losses; the corrosion not only causes economic loss, but also often forms a threat to safety, the uniform corrosion of the metal generally progresses slowly and is not very harmful, but some local corrosion such as pitting corrosion or stress corrosion cracking are often sudden and easily cause safety accidents. Under the background, the corrosion monitoring technology for key equipment in industrial production is developed like the technology of the bamboo shoots in spring after rain, such as the monitoring technologies of linear polarization, polarization resistance, electrochemical noise and the like, and the technologies can realize the corrosion monitoring on the target object to a certain extent. However, due to the uncertainty of the position where corrosion occurs and the uncertainty of the direction in which corrosion continues to progress, the monitoring technology often has the problem that corrosion monitoring is inaccurate in the actual implementation process, and it is difficult to accurately feed back the corrosion degree of a monitored object, thereby bringing uncertainty to the safety service of equipment.
To solve the problem of monitoring metal corrosion, the Chinese patent application No. CN202021658352.3 discloses a metal atmospheric corrosion on-line monitoring sensor, which comprises bottom film paper, insulating paper and a sensor body, wherein metal adhesives are uniformly coated on the outer wall of the bottom of the insulating paper, the outer wall of the bottom of the insulating paper is bonded on the outer wall of the top of the bottom film paper through the metal adhesives, a thin gold layer is coated on the outer wall of the top of the insulating paper, the insulating paper is in a fishbone shape, the extending edges of the insulating paper and a trunk form a non-vertical fixed angle, the extending edges of the left side and the right side of the insulating paper are respectively in equidistant parallel, the vertex angle of the extending edges of the insulating paper and the included angle of the extending edges of the insulating paper and the trunk are in smooth transition, the metal adhesives are tightly connected with the insulating paper, the insulating paper does not fall off after long-term use, the thin gold layer is in the same shape as the insulating paper, and the thin gold layer is coated on the outer wall of the top of the insulating paper. However, in the practical use process, the applicant finds that the scheme focuses on solving the measurement errors and uncertainties caused by uneven corrosion positions and areas of the metal surface layer, the specific corrosion degree of the corrosion position is difficult to monitor and grade, and meanwhile, a corresponding corrosion grade early warning scheme is not provided.
Therefore, in the face of the corrosion degree monitoring and early warning requirements of key parts of important equipment, a corrosion warning sensor needs to be developed urgently, the problem that monitoring results are inaccurate due to uncertainty of corrosion occurrence in a corrosion monitoring process can be solved, and meanwhile, the corrosion state of a measured part can be accurately fed back and early warning can be performed aiming at the corrosion degree.
Disclosure of Invention
In order to solve the problems that the monitoring result is inaccurate and the different corrosion degrees are difficult to be subjected to corresponding early warning due to the uncertainty of corrosion in the existing corrosion monitoring process, the embodiment of the application provides a corrosion warning sensor which can accurately feed back the corrosion degree of a monitored part and warn the part, and a corrosion signal is transmitted in a wired or wireless mode.
The technical scheme adopted by the embodiment of the application for solving the technical problem is as follows: a corrosion warning sensor is characterized by comprising a metal shell, a test piece group, a variable conductor, a circuit unit and a warning device.
The metal housing has at least one opening.
The test piece group consists of more than two test pieces with different thicknesses, is arranged at the opening part of the metal shell, and the bottom surface of each test piece is used for contacting with an external corrosive medium.
And a variable conductor provided on the top of each test piece of the test piece group.
And the circuit unit is electrically connected with the variable conductor and the metal shell at the top of each test piece, and after the variable conductor corresponding to the top of the test piece is converted into the conductor due to corrosion penetration of the test piece, a warning circuit formed by the test piece, the variable conductor, the metal shell, the corrosion medium and the circuit unit is conducted, and the circuit unit generates a corrosion monitoring signal.
And the warning device is connected with the circuit unit and is used for expressing the corrosion monitoring signal in a warning form.
In a specific implementation scheme, the circuit unit further comprises a data processing module, a wireless transmission module and a data interface, wherein the data processing module can encode the information of the circuit unit into a digital signal and send the digital signal to the outside through the wireless transmission module, and the data interface can transmit the digital signal of the circuit unit to the outside in a wired manner.
In a specific embodiment, the circuit unit further comprises a power supply, which supplies power to the circuit unit and can charge the power supply via the data interface.
In a specific embodiment, the metal shell is provided with a shell cap which is detachably connected, and the warning device and the data interface are arranged on the shell cap; the data processing module and the wireless transmitting module are arranged in the cavity of the metal shell; the outer surface of the metal shell is provided with threads convenient to mount.
In a specific embodiment, the variable conductor on the top of each test piece and the surface of each test piece except the contact surface are provided with fillers to isolate the variable conductor from external corrosive medium.
In a specific embodiment, the filler material is a bisphenol a type epoxy resin.
In a specific embodiment, the variable electrical conductor material is polyvinylpyrrolidone.
In a specific embodiment, the test pieces of the test piece group are isolated from each other and provided with a filler outside each surface except the bottom surface.
In a specific embodiment, each test piece of the test piece group is of a circumferential closed structure around the middle part of the metal shell, and each test piece is arranged in sequence from the middle part of the metal shell to the inner wall of the metal shell; the material of each test piece of the test piece group is the same as that of the object to be monitored.
In a specific embodiment, the warning device is a warning lamp, and the electrical circuits connecting the variable conductors on the tops of different test strips are displayed in different photoelectric forms.
The embodiment of the application has the advantages that:
1. the corrosion warning sensor feeds back different corrosion conditions after the monitoring test pieces with different thicknesses are corroded by arranging the multi-stage monitoring test pieces, so that the corrosion degree of a corrosion part is accurately monitored.
2. The corrosion warning sensor adopts a photoelectric warning device, can display different corrosion grades in real time in a differentiation mode, enables monitoring of corrosion to be more visual, and improves early warning capacity of equipment monitoring.
3. The variable conductor arranged on the test piece of the corrosion warning sensor is made of a material which can conduct electricity when meeting a water environment medium, so that the specialty and the reliability of a monitoring mode of equipment working under the water environment medium are improved.
4. Adopt insulating filler to keep apart between a plurality of test blocks of corrosion warning sensor and between the metal casing, avoid influencing each other and receive external disturbance influence between the monitoring test block to monitoring precision and reliability have been ensured.
5. The corrosion warning sensor can transmit signals in a wired or wireless mode, can be charged for energy storage, improves the flexibility of monitoring means, and can meet different use requirements according to specific conditions of monitoring positions.
Drawings
FIG. 1 is a schematic cross-sectional view of a corrosion warning sensor according to the present invention;
FIG. 2 is a schematic cross-sectional view of a corrosion warning sensor according to the present invention.
Description of the main reference numerals:
1-a metal housing; 2-group of test pieces; 21-first grade test piece; 22-secondary test piece; 23-three-level test piece; 3-a housing cap; 4-a data processing module and a wireless transmitting module; 5-connecting wires; 6-a filler; 7-a variable electrical conductor; 8-a warning device; 9-data interface.
Detailed Description
The embodiment of the application provides a corrosion warning sensor, solves the problems that in the prior art, the monitoring result caused by the uncertainty of corrosion is inaccurate, and the corresponding early warning is difficult to be carried out on different corrosion degrees, and has the following general idea:
example 1:
referring to fig. 1, the present invention provides a corrosion warning sensor, which includes a metal housing 1, a test strip group 2, a variable conductor 7, a circuit unit, and a warning device 8; the metal shell 1 is provided with at least one opening part, the test piece group 2 is composed of more than two test pieces with different thicknesses and is arranged at the opening part of the metal shell 1, and the bottom surface of each test piece is used for contacting with an external corrosive medium; the variable conductor 7 is arranged on the top of each test piece of the test piece group 2; the circuit unit is electrically connected with the variable conductor 7 and the metal shell 1 at the top of each test piece, after the variable conductor 7 corresponding to the top of the test piece is converted into a conductor due to corrosion penetration of the test piece, a warning circuit formed by the test piece, the variable conductor 7, the metal shell 1, a corrosion medium and the circuit unit is conducted, and the circuit unit generates a corrosion monitoring signal; the warning device 8 is connected with the circuit unit and used for expressing the corrosion monitoring signal in a warning form; the metal shell 1 of the corrosion warning sensor is provided with at least one opening part so as to accommodate and arrange the test piece group 2, the bottom surface of each test piece of the test piece group 2 is in direct contact with an external corrosion medium so as to be in direct contact corrosion with an environmental medium causing corrosion, because the variable conductor 7 is isolated from the external corrosion medium with other surfaces except the contact surface of the test piece, only after the corrosion thickness of the test piece reaches the variable conductor 7 at the top of the test piece, the variable conductor 7 is changed into a conductor under the action of the external corrosion medium due to the material characteristics of the variable conductor 7, and a circuit formed by the variable conductor 7, the metal shell and the corrosion medium of the test piece is communicated to form a loop under the action of the connecting wire 5 of the circuit unit and an external power supply, and the warning device 8 is triggered to send out early warning information such as light or sound.
The warning device 8 can be directly connected to the circuit loop formed by the variable conductors 7 of the circuit unit in an electrically connecting manner, and can also be in communication connection with the circuit unit to receive signals of the circuit unit to realize different warning and early warning, and the former is adopted in the embodiment. In addition, in the present embodiment, the filler 6 is disposed outside the variable conductor 7 on the top of each test piece and the other surfaces except the contact surface of each test piece, and the filler 6 is filled outside the variable conductor 7 and the other surfaces except the contact surface of each test piece to further ensure that the other surfaces are isolated from the external environment; the test piece group 2 can be arranged in a plurality of ways according to the situation, the material of the test piece is the same as that of the monitoring part, and the thickness of each test piece is different, so that the capability of resisting the corrosion penetration of the environment medium is different, and the corrosion degree of the external environment medium to the monitoring part is reflected.
Example 2:
the difference from example 1 is that: the test piece group 2 of the present embodiment is composed of a first-level test piece 21, a second-level test piece 22, and a third-level test piece 23 with sequentially increasing thickness, which correspond to three levels of usable (first-level) monitoring material, observable (second-level) monitoring material, and dangerous (third-level) monitoring material respectively according to the principle that the dangerous level decreases sequentially, each test piece of the test piece group 2 is arranged around the circumferential sealing structure in the middle of the metal housing 1, and each test piece is sequentially arranged from the middle of the metal housing 1 to the inner wall of the metal housing 1, that is, the first-level test piece 21 is a cylindrical structure in the middle, the second-level test piece 22 is a cylindrical structure surrounding the first-level test piece 21, and similarly, the third-level test piece 23 is a cylindrical structure surrounding the second-level test piece 22; in order to ensure that the thin test piece does not influence the adjacent test piece after corrosion penetration, the test pieces are mutually isolated, and the outside of each surface except the bottom surface of each test piece is provided with a filler 6 to isolate the influence of the external environment on the test piece; the external corrosive medium in the embodiment is seawater, and preferably, the filler 6 in the embodiment is bisphenol a epoxy resin, so that the excellent insulating and isolating effect is achieved; the variable conductor 7 is made of polyvinylpyrrolidone, belongs to special high polymer materials, is not conductive when being dried, and is converted into a conductive material when being contacted with seawater.
Further, the circuit unit of this embodiment further includes a data processing module, a wireless transmission module 4, and a data interface 9, where the data processing module can encode the information of the circuit unit into a digital signal, and send the digital signal to the outside through the wireless transmission module, and transmit the digital signal to a monitoring system of a user. Data interface 9 can pass through wired mode with circuit unit's digital signal and outwards transmit, and circuit unit still includes built-in power, and the power can directly supply power to circuit unit to can charge for the power through data interface 9, no longer need insert external power source, improved the convenience of equipment monitoring under the sea water. The metal shell 1 is provided with a detachable shell cap 3 connected through threads, the warning device 8 and the data interface 9 are arranged on the shell cap 3, the circuit unit is sealed in a cavity formed by the metal shell 1 and the shell cap 3, and the influence of the external environment on the circuit unit is isolated; (ii) a The data processing module and the wireless transmitting module 4 are arranged in the cavity of the metal shell 1, and the outer surface of the metal shell 1 is provided with threads convenient to install so as to be installed on a part to be monitored. Preferably, the warning device 8 adopts a warning light capable of displaying red, yellow and green colors respectively corresponding to three danger levels, and electrical circuits connected with different test pieces are displayed in different photoelectric forms, so that the intuitiveness of early warning is improved.
Specifically, in the using process, the corrosion warning sensor is installed on a pipe seat correspondingly matched in a target environment medium through a thread arranged outside a metal shell 1, the outer surface of a corrosion warning sensor test piece group 2 is directly exposed in the target environment, along with the extension of service time, a corrosion defect occurs in a first-stage test piece 21 with the thinnest middle part, so that polyvinylpyrrolidone (PVP) covered on the inner surface of the test piece is directly contacted with seawater of an external environment corrosion medium, a circuit unit which is originally in an open circuit is instantly changed into a circuit state, after the circuit unit acquires information, the circuit information of the connection of the test piece is coded into a transmittable digital signal, the signal is transmitted outwards through a wireless transmitting module or a data interface 9, a corresponding green warning lamp is lightened, and the like, the warning lamp turns yellow from green and finally turns red, and warning workers to monitor the corrosion state of the material of the object.
In conclusion, the invention can be used for grading and accurately monitoring the corrosion degree caused by the environment medium by arranging the test pieces with different thicknesses which are directly contacted with the external environment medium, and carrying out differential early warning expression on different corrosion degrees by the visual warning device 8, thereby improving the intuitiveness of the early warning information expression.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are intended to be within the scope of the present invention.
Claims (10)
1. A corrosion warning sensor, comprising:
a metal case having at least one opening;
the test piece group consists of more than two test pieces with different thicknesses, is arranged at the opening part of the metal shell, and the bottom surface of each test piece is used for contacting with an external corrosive medium;
a variable conductor provided on the top of each test piece of the test piece group;
the circuit unit is electrically connected with the variable conductor and the metal shell at the top of each test piece, and after the variable conductor corresponding to the top of the test piece is converted into the conductor due to corrosion penetration of the test piece, a warning circuit formed by the test piece, the variable conductor, the metal shell, a corrosion medium and the circuit unit is conducted, and the circuit unit generates a corrosion monitoring signal; and
and the warning device is connected with the circuit unit and is used for expressing the corrosion monitoring signal in a warning form.
2. The corrosion warning sensor of claim 1, wherein the circuit unit further comprises a data processing module, a wireless transmission module, and a data interface, the data processing module can encode the information of the circuit unit into a digital signal and transmit the digital signal to the outside through the wireless transmission module, and the data interface can transmit the digital signal of the circuit unit to the outside through a wired manner.
3. The corrosion warning sensor of claim 2, wherein said circuit unit further comprises a power source, said power source providing power to said circuit unit and being capable of recharging said power source through said data interface.
4. A corrosion warning sensor according to claim 3, wherein the metal housing is provided with a removably attachable housing cap, the warning device and the data interface being provided on the housing cap; the data processing module and the wireless transmitting module are arranged in the metal shell cavity; the outer surface of the metal shell is provided with threads convenient to mount.
5. A corrosion warning sensor according to any one of claims 1 to 4, wherein the variable conductor at the top of each test strip is provided with a filler on the outside of the surfaces other than the contact surface with each test strip to isolate the variable conductor from external corrosive media.
6. The corrosion warning sensor of claim 5, wherein said filler material is a bisphenol A epoxy.
7. The corrosion warning sensor of claim 6, wherein said variable conductor material is polyvinylpyrrolidone.
8. The corrosion warning sensor of claim 7, wherein the test strips of the test strip group are isolated from each other and have a filler disposed on the outer surface of the test strips except the bottom surface thereof.
9. The corrosion warning sensor of claim 7 or 8, wherein each test piece of the test piece group is a circumferential closed structure around the middle of the metal housing, and each test piece is sequentially arranged from the middle of the metal housing to the inner wall of the metal housing; the material of each test piece of the test piece group is the same as that of the object to be monitored.
10. A corrosion warning sensor according to claim 9, wherein the warning device is a warning light, and the electrical circuits connecting the variable conductors on the top of different test strips are displayed in different photoelectric forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210760601.7A CN115127984B (en) | 2022-06-30 | 2022-06-30 | Corrosion warning sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210760601.7A CN115127984B (en) | 2022-06-30 | 2022-06-30 | Corrosion warning sensor |
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| CN115127984A true CN115127984A (en) | 2022-09-30 |
| CN115127984B CN115127984B (en) | 2023-06-09 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040055391A1 (en) * | 2002-06-28 | 2004-03-25 | Douglas Dennis G. | Method and apparatus for remotely monitoring corrosion using corrosion coupons |
| CN104155235A (en) * | 2014-09-10 | 2014-11-19 | 四川省科学城海天实业总公司 | Atmospheric corrosion rate online monitoring sensor |
| CN205607831U (en) * | 2016-04-24 | 2016-09-28 | 西安长庆科技工程有限公司 | Online inductance probe corrosion monitoring system |
| CN107063984A (en) * | 2017-03-13 | 2017-08-18 | 李铁骑 | Corrosion sensor and corrosion monitoring system |
| CN207163882U (en) * | 2017-09-12 | 2018-03-30 | 南方电网科学研究院有限责任公司 | A kind of atmospheric corrosion monitoring probe |
| CN213957106U (en) * | 2020-08-11 | 2021-08-13 | 珠海市高新区中城粤能科技有限公司 | Metal atmospheric corrosion on-line monitoring sensor |
-
2022
- 2022-06-30 CN CN202210760601.7A patent/CN115127984B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040055391A1 (en) * | 2002-06-28 | 2004-03-25 | Douglas Dennis G. | Method and apparatus for remotely monitoring corrosion using corrosion coupons |
| CN104155235A (en) * | 2014-09-10 | 2014-11-19 | 四川省科学城海天实业总公司 | Atmospheric corrosion rate online monitoring sensor |
| CN205607831U (en) * | 2016-04-24 | 2016-09-28 | 西安长庆科技工程有限公司 | Online inductance probe corrosion monitoring system |
| CN107063984A (en) * | 2017-03-13 | 2017-08-18 | 李铁骑 | Corrosion sensor and corrosion monitoring system |
| CN207163882U (en) * | 2017-09-12 | 2018-03-30 | 南方电网科学研究院有限责任公司 | A kind of atmospheric corrosion monitoring probe |
| CN213957106U (en) * | 2020-08-11 | 2021-08-13 | 珠海市高新区中城粤能科技有限公司 | Metal atmospheric corrosion on-line monitoring sensor |
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