CN115127984B - Corrosion warning sensor - Google Patents
Corrosion warning sensor Download PDFInfo
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- CN115127984B CN115127984B CN202210760601.7A CN202210760601A CN115127984B CN 115127984 B CN115127984 B CN 115127984B CN 202210760601 A CN202210760601 A CN 202210760601A CN 115127984 B CN115127984 B CN 115127984B
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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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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 test piece group consists of more than two test pieces with different thicknesses, the test piece group is arranged at the opening part of the metal shell, and the bottom surface of each test piece is used for being contacted with an external corrosion medium; 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 test piece is penetrated by corrosion, the corresponding variable conductor at the top of the test piece is converted into a conductor, the test piece, the variable conductor, the metal shell, the corrosion medium and a warning circuit formed by the circuit unit are conducted, and the circuit unit generates a corrosion monitoring signal; the warning device is connected with the circuit unit and used for expressing the corrosion monitoring signal in a warning mode. The corrosion warning sensor can accurately monitor the corrosion degree of the component and perform real-time visual 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 situation that the corrosion causes harm to appliances or equipment or causes accidents is frequent, and according to statistics, the direct economic loss caused by metal corrosion accounts for 2% -4% of the total yield value of national economy and far exceeds the sum of flood, fire, wind and earthquake losses; corrosion not only causes economic loss, but also often constitutes a safety threat, uniform metal corrosion generally progresses slowly and is less harmful, but some local corrosion such as pitting corrosion or stress corrosion cracking is often sudden, and safety accidents are extremely easy to cause. Under the background, the corrosion monitoring technology of key equipment in industrial production is developed like spring bamboo shoots after rain, such as linear polarization, polarization resistance, electrochemical noise and other monitoring technologies, and the technologies can realize corrosion monitoring of a target object to a certain extent. However, due to the uncertainty of the corrosion occurrence position and the uncertainty of the corrosion continuing progress direction, the problem of inaccurate corrosion monitoring often exists in the actual implementation process of the monitoring technology, and the accurate feedback of the corrosion degree of the monitored object is difficult, so that the uncertainty is brought to the safe service of equipment.
To the monitoring problem of metal corrosion, chinese patent application number CN202021658352.3 discloses an online monitoring sensor of metal atmospheric corrosion, including backing film paper, insulating paper and sensor body, evenly brush metal adhesive on the insulating paper bottom outer wall, and insulating paper bottom outer wall bonds on backing film paper top outer wall through metal adhesive, the coating has the thin gold layer on the insulating paper top outer wall, insulating paper shape is fishbone shape, and insulating paper extends limit and trunk and is non-vertically fixed angle, insulating paper left and right sides extends limit equidistance parallel respectively, and the apex angle of insulating paper extends limit and the contained angle smooth transition with the trunk, metal adhesive and insulating paper zonulae occludens, and insulating paper long-term use does not drop, thin gold layer shape is the same with insulating paper shape, and thin gold layer coating is on insulating paper top outer wall. However, in the practical use process, the applicant finds that the scheme is focused on solving the measurement errors and uncertainties of the metal surface layer caused by uneven corrosion positions and areas, and is difficult to monitor and grade the specific corrosion degree of the corrosion positions, and meanwhile, no corresponding corrosion grade early warning scheme exists.
Therefore, in order to meet the requirements of monitoring and early warning of the corrosion degree of key parts of important equipment, development of a corrosion warning sensor is needed, the problem that monitoring results are inaccurate due to uncertainty of corrosion in the 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 carried out on the corrosion degree.
Disclosure of Invention
In order to solve the problems that the monitoring result is inaccurate and corresponding early warning is difficult to be carried out on different corrosion degrees due to 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 monitored part, and transmits a corrosion signal in a wired or wireless mode.
The technical scheme adopted by the embodiment of the application for solving the technical problems 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 shell is provided with 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 being contacted with an external corrosive medium.
And the variable conductor is arranged 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 test piece penetrates through the test piece due to corrosion and the corresponding variable conductor at the top of the test piece is converted into the conductor, the test piece, the variable conductor, the metal shell, the corrosion medium and a warning circuit formed by the circuit unit are 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 mode.
In a specific embodiment, the circuit unit further comprises a data processing module, a wireless transmitting module and a data interface, wherein the data processing module can encode information of the circuit unit into digital signals, the digital signals are transmitted to the outside through the wireless transmitting module, and the data interface can transmit the digital signals of the circuit unit to the outside through a wired mode.
In a specific embodiment, the circuit unit further comprises a power supply that supplies power to the circuit unit and is capable of charging 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 install.
In a specific embodiment, the variable conductor on top of each test piece is provided with a filler outside each other surface except the contact surface of each test piece so as to isolate the variable conductor from external corrosive media.
In a specific embodiment, the filler material is bisphenol a type epoxy resin.
In a specific embodiment, the variable conductor material is polyvinylpyrrolidone.
In a specific embodiment, the test strips of the test strip population are spaced apart from each other and are provided with a filler outside each of the faces other than the bottom face thereof.
In a specific embodiment, each test piece of the test piece group is a circumferential closed structure around the middle part of the metal shell, and each test piece is sequentially arranged 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 monitored object.
In a specific embodiment, the warning device is a warning lamp, and the electric loops for connecting the variable conductors at the top of different test pieces are displayed in different photoelectric modes.
The embodiment of the application has the advantages that:
1. the corrosion warning sensor feeds back different corrosion conditions after corrosion of the monitoring test pieces with different thicknesses through arranging the multi-stage monitoring test pieces, so that the corrosion degree of the corrosion part is accurately monitored.
2. The corrosion warning sensor adopts the photoelectric warning device, and can display different corrosion grades in real time, so that the corrosion monitoring is more visual, and the early warning capability of equipment monitoring is improved.
3. The variable conductor arranged on the test piece of the corrosion warning sensor adopts a material which is conductive when meeting water environment medium, thereby improving the professional and reliability of a monitoring mode of equipment working under the water environment medium.
4. Insulating filler is adopted between a plurality of test pieces of the corrosion warning sensor and between the test pieces and the metal shell, so that the mutual influence among the monitoring test pieces and the influence of external interference are avoided, and the monitoring precision and the reliability are ensured.
5. The corrosion warning sensor can transmit signals in a wired or wireless mode, can charge and store energy, improves the flexibility of a monitoring means, and can meet different use requirements according to specific conditions of a monitored part.
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.
The main reference numerals illustrate:
1-a metal housing; 2-a test piece group; 21-a first-level test piece; 22-a secondary test piece; 23-three-stage test pieces; 3-a housing cap; a 4-data processing module and a wireless transmitting module; 5-connecting wires; 6-filling; 7-a variable conductor; 8-warning device; 9-data interface.
Detailed Description
According to the corrosion warning sensor, the problems that monitoring results are inaccurate and corresponding early warning is difficult to be carried out on different corrosion degrees due to uncertainty of corrosion in the prior art are solved, and the overall thought is as follows:
example 1:
referring to fig. 1, the present invention provides a corrosion warning sensor, which includes a metal housing 1, a test block 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, the test piece group 2 consists of more than two test pieces with different thicknesses, the test pieces are arranged at the opening 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 test piece is penetrated by corrosion, the corresponding variable conductor 7 at the top of the test piece is converted into a conductor, the test piece, the variable conductor 7, the metal shell 1, the corrosion medium and a warning circuit formed by the circuit unit are 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 mode; the metal casing 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 directly generate contact corrosion with the corrosion-induced environment medium, each surface except the contact surface of the variable conductor 7 and the test piece is isolated from the external corrosion medium, after the corrosion thickness of the test piece reaches the variable conductor 7 at the top of the test piece, the test piece 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 casing and the corrosion medium of the test piece is communicated to form a loop under the action of a connecting wire 5 of a circuit unit and an external power supply, and warning information such as light or sound is emitted by the warning device 8.
The warning device 8 can be directly connected into a circuit loop formed by the variable conductors 7 of the circuit unit in an electric connection mode, can also be in communication connection with the circuit unit, and can receive signals of the circuit unit to realize different warning and early warning, and the former is adopted in the embodiment. In addition, in this embodiment, the filler 6 is disposed outside the surfaces of the variable conductor 7 on the top of each test piece and other surfaces except the contact surface of each test piece, and the filler 6 is filled outside the surfaces of the variable conductor 7 and other surfaces except the contact surface of each test piece, so as to further ensure that the other surfaces are isolated from the external environment; the test block group 2 can be provided with a plurality of test blocks according to the situation, the material of the test blocks is the same as that of the monitoring part, and the thickness of each test block is different, so that the corrosion penetration resistance of the environment medium is also different, and the corrosion degree of the external environment medium to the monitoring part is reacted.
Example 2:
the difference from example 1 is that: the test piece group 2 in this embodiment is composed of a first-stage test piece 21, a second-stage test piece 22 and a third-stage test piece 23 with sequentially increased thickness, and according to the principle that the hazard levels are sequentially decreased, the three levels are respectively corresponding to the available (first-stage) monitoring material, the observing (second-stage) monitoring material and the hazard (third-stage) monitoring material, each test piece of the test piece group 2 is a circumferentially closed structure around the middle part of the metal shell 1, and each test piece is sequentially arranged from the middle part of the metal shell 1 to the inner wall of the metal shell 1, namely, the first-stage test piece 21 is in a cylindrical structure in the middle part, the second-stage test piece 22 is in a cylindrical structure surrounding the first-stage test piece 21, and the same three-stage test piece 23 is in a cylindrical structure surrounding the second-stage test piece 22; in order to ensure that the thinner test piece does not affect the adjacent test piece after corrosion penetration, the test pieces are mutually isolated, and a filler 6 is arranged outside each surface except the bottom surface of each test piece so as to isolate the influence of external environment on the test piece; the external corrosion medium in the embodiment is seawater, preferably, the filler 6 in the embodiment is bisphenol A type epoxy resin, and the insulating and isolating effects are excellent; the material of the variable conductor 7 is polyvinylpyrrolidone, which belongs to a special polymer material, is non-conductive when dried, and is converted into a conductive material when contacting seawater.
Further, the circuit unit of the embodiment further includes a data processing module, a wireless transmitting module 4 and a data interface 9, where the data processing module can encode information of the circuit unit into a digital signal, and the digital signal is sent to the outside through the wireless transmitting module and transmitted to a monitoring system of a user. The data interface 9 can outwards transmit the digital signal of the circuit unit in a wired mode, the circuit unit further comprises a built-in power supply, the power supply can directly supply power to the circuit unit, the power supply can be charged through the data interface 9, an external power supply is not needed to be connected, and the monitoring convenience of the equipment under the sea water is improved. The metal shell 1 is provided with a detachable shell cap 3 which is 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; the method comprises the steps of carrying out a first treatment on the surface of the 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 warning lamps which can display red, yellow and green colors corresponding to three dangerous grades respectively, and the electric loops which are connected with different test pieces are displayed in different photoelectric forms, so that the intuitiveness of early warning is improved.
Specifically, in the use process, the corrosion warning sensor is installed on a corresponding matched tube seat in a target environment medium through threads arranged outside the metal shell 1, the outer surface of the test piece group 2 of the corrosion warning sensor is directly exposed in the target environment, along with the extension of service time, the first-stage test piece 21 with the thinnest thickness in the middle part is corroded, polyvinylpyrrolidone (PVP) covered on the inner surface of the test piece is caused to directly contact with seawater of an external environment corrosion medium, an originally broken circuit unit is instantly converted into a passage state, after the circuit unit acquires information, the on circuit information of the test piece is coded into a transmissible digital signal, the signal is transmitted outwards through the wireless transmitting module or the data interface 9, a corresponding green warning lamp is lightened, and the warning lamp turns yellow from green and finally turns red, so that a worker is warned to monitor the material corrosion state of an object.
In summary, the invention carries out graded accurate monitoring on the corrosion degree caused by the environment medium by arranging the test pieces with different thicknesses in direct contact with the environment medium, carries out differential early warning expression on different corrosion degrees by the visual warning device 8, and improves the intuitiveness of early warning information expression.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present invention and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (7)
1. A corrosion warning sensor, comprising:
a metal housing 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 a corrosion medium which is seawater; the test pieces of the test piece group are isolated from each other and are provided with fillers outside each surface except the bottom surface; the material of each test piece of the test piece group is the same as that of the monitored object;
a variable conductor provided on top of each test piece of the test piece group; the variable conductor material is polyvinylpyrrolidone; the outside of each surface except the contact surface of the variable conductor at the top of each test piece and each test piece is provided with a filler so as to isolate the variable conductor from the corrosive medium;
the circuit unit is electrically connected with the variable conductor and the metal shell at the top of each test piece, and after the test piece penetrates through the test piece due to corrosion and the corresponding variable conductor at the top of the test piece is converted into the conductor, the test piece, the variable conductor, the metal shell, the corrosion medium and a warning circuit formed by the circuit unit are conducted, and the circuit unit generates a corrosion monitoring signal; and
and the warning device is connected with the circuit unit and used for expressing the corrosion monitoring signal in a warning mode.
2. The corrosion warning sensor of claim 1, wherein the circuit unit further comprises a data processing module, a wireless transmitting module, and a data interface, the data processing module being capable of encoding information of the circuit unit into digital signals, transmitting the digital signals to the outside through the wireless transmitting module, and the data interface being capable of transmitting the digital signals of the circuit unit to the outside through a wired manner.
3. A corrosion warning sensor according to claim 2, wherein the circuit unit further comprises a power source, the power source supplying power to the circuit unit and being capable of charging the power source via the data interface.
4. A corrosion warning sensor according to claim 3, wherein the metal housing is provided with a detachably connected housing cap, and the warning device and the data interface are arranged on the housing 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 for installation.
5. The corrosion warning sensor of claim 4, wherein the filler material is bisphenol a type epoxy.
6. The corrosion warning sensor of claim 5, wherein each test piece of the test piece group is a circumferentially closed structure around the middle of the metal housing, and each test piece is disposed sequentially from the middle of the metal housing to the inner wall of the metal housing.
7. The corrosion warning sensor of claim 6, wherein the warning device is a warning light, and the electrical loops connecting the variable conductors on top of different test strips are shown in different photoelectric forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210760601.7A CN115127984B (en) | 2022-06-30 | 2022-06-30 | Corrosion warning sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210760601.7A CN115127984B (en) | 2022-06-30 | 2022-06-30 | Corrosion warning sensor |
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| Publication Number | Publication Date |
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| CN115127984A CN115127984A (en) | 2022-09-30 |
| CN115127984B true CN115127984B (en) | 2023-06-09 |
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| CN202210760601.7A Active CN115127984B (en) | 2022-06-30 | 2022-06-30 | Corrosion warning sensor |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003251753A1 (en) * | 2002-06-28 | 2004-01-19 | Vista Engineering Technologies, L.L.C. | 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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