CN111551483A - Apparatus for monitoring metal corrosion and method for monitoring metal corrosion - Google Patents
Apparatus for monitoring metal corrosion and method for monitoring metal corrosion Download PDFInfo
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- CN111551483A CN111551483A CN202010433088.1A CN202010433088A CN111551483A CN 111551483 A CN111551483 A CN 111551483A CN 202010433088 A CN202010433088 A CN 202010433088A CN 111551483 A CN111551483 A CN 111551483A
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- 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
Abstract
The invention relates to the technical field of environmental corrosivity monitoring, in particular to a device and a method for monitoring metal corrosion; the device for monitoring metal corrosion comprises a detection assembly, an angle gauge, a support frame and a balance piece, wherein the balance piece is rotatably arranged on the support frame and comprises a first end and a second end which are opposite to each other along the length direction of the balance piece; the angle gauge is arranged on the balance piece and used for detecting the rotating angle of the balance piece relative to the support frame and outputting a first detection signal; the method applied to the device comprises the steps of detecting the rotating angle of the balance piece relative to the supporting frame by using the angle gauge, outputting a first detection signal, and determining the atmospheric corrosion rate of the metal sample plate to be tested according to the first detection signal. The device and the method for monitoring the metal corrosion can acquire a plurality of test data in a test period.
Description
Technical Field
The invention relates to the technical field of environmental corrosivity monitoring, in particular to a device and a method for monitoring metal corrosion.
Background
Environmental corrosivity is one of important factors influencing the service safety of materials, and the environmental corrosivity is influenced by factors such as temperature, humidity, chloride ions, sulfur dioxide and the like, so that the corrosivity difference of different areas is large. Monitoring of environmental corrosion is therefore very important.
The detection method of the atmospheric corrosion rate of the metal provided by the related technology comprises the following steps: manufacturing a test template; measuring the original weight and size of the test template; exposing the test sample plate to the actual atmospheric environment to carry out a corrosion test; taking back the test sample plate after a certain period of test, and removing rust and weighing; the corrosion rate was converted from the weight loss before and after the test.
However, the method provided by the related art has the problems that the acquired data amount is small, and only one corrosion rate data exists in each test period.
Disclosure of Invention
The invention aims to provide a device and a method for monitoring metal corrosion, which can acquire a plurality of test data in a test period.
The embodiment of the invention is realized by the following steps:
in a first aspect, an embodiment of the present invention provides a device for monitoring metal corrosion, including a detection assembly, an angle gauge, a support frame, and a balance member, wherein the balance member is rotatably disposed on the support frame, and along a length direction of the balance member, the balance member includes a first end and a second end opposite to each other, the first end is connected to the detection assembly, and the second end is used for connecting a metal sample plate to be tested; the angle gauge is arranged on the balance piece and used for detecting the rotating angle of the balance piece relative to the supporting frame and outputting a first detection signal.
In an alternative embodiment, the apparatus for monitoring metal corrosion further comprises a signal transmitting device, and the angle gauge is in communication with the signal transmitting device.
In an alternative embodiment, the signal transmitting device includes a WiFi signal transmitting device, a LoRa signal transmitting device, or a GPRS signal transmitting device.
In an alternative embodiment, the sensing assembly includes a strain sensor and a standard member coupled to each other, the standard member coupled to the first end; the stress sensor is used for detecting the stress change on the balancing piece and outputting a second detection signal.
In an alternative embodiment, the stress sensor and the standard are connected by a connecting string.
In an alternative embodiment, the standard is made of a material that is resistant to high corrosion.
In an optional embodiment, the device for monitoring metal corrosion further comprises a protection box, the detection assembly, the angle gauge, the support frame and the first end are all arranged in the protection box, and the second end is located outside the protection box.
In an alternative embodiment, the support frame comprises a bottom end and a top end distributed along the height direction of the support frame, the bottom end is arranged on the bottom wall of the protection box, and the balance piece is arranged on the top end.
In an alternative embodiment, the goniometer is disposed adjacent the tip.
In an alternative embodiment, the balance is made of a material resistant to high corrosion.
In a second aspect, an embodiment of the present invention provides a method for monitoring metal corrosion, which is applied to an apparatus for monitoring metal corrosion, where the apparatus for monitoring metal corrosion includes: the device comprises a detection assembly, an angle instrument, a support frame and a balance piece, wherein the balance piece is rotatably arranged on the support frame and comprises a first end and a second end which are opposite along the length direction of the balance piece, the first end is connected with the detection assembly, and the second end is used for connecting a metal sample plate to be tested; the angle gauge is arranged on the balance piece; the monitoring method of metal corrosion comprises the following steps: and detecting the rotating angle of the balance piece relative to the support frame by using an angle instrument, outputting a first detection signal, and determining the atmospheric corrosion rate of the metal sample plate to be tested according to the first detection signal.
In an alternative embodiment, the sensing assembly includes a strain sensor and a standard member coupled to each other, the standard member coupled to the first end; the stress sensor is used for detecting stress change borne by the balance piece and outputting a second detection signal; the monitoring method for metal corrosion further comprises the following steps: detecting stress change borne by the balance piece by using a stress sensor, and outputting a second detection signal; and determining the atmospheric corrosion rate of the metal sample plate to be tested according to the first detection signal and the second detection signal.
The device for monitoring metal corrosion provided by the embodiment of the invention has the beneficial effects that: the balance piece provided with the angle instrument in the device for monitoring metal corrosion provided by the embodiment of the invention is rotatably arranged on the support frame, the first end of the balance piece is connected with the detection component, and the second end of the balance piece is used for connecting a metal sample plate to be tested; thus, when the device for monitoring metal corrosion is used for monitoring the corrosion rate of the metal sample plate, the detection components at the two ends of the balancing piece and the metal sample plate to be tested are configured to be balanced with each other in an initial state, so that the balancing piece rotatably arranged on the supporting frame is in a balanced state, the angle value of the angle meter is an initial value at the moment, for example, the reading of the angle meter is zero, in the process of monitoring the atmospheric corrosion rate of the metal sample plate to be tested, the metal sample plate to be tested is corroded by the atmosphere and rusts, so that the change of weight is generated, the original balance of the balancing piece is damaged by the change of the weight of the metal sample plate to be tested, the balancing piece rotates relative to the supporting frame, the angle meter detects the rotating angle of the balancing piece relative to the supporting frame, and then the corresponding first detection signal can be output in real time, so that the atmospheric corrosion rate of, thereby acquiring a plurality of test data during a test cycle.
The metal corrosion monitoring method provided by the embodiment of the invention has the beneficial effects that: the monitoring method of the metal corrosion provided by the embodiment of the invention is applied to a device for monitoring the metal corrosion, a balancing piece provided with an angle instrument in the device for monitoring the metal corrosion is rotatably arranged on a supporting frame, the first end of the balancing piece is connected with a detection component, and the second end of the balancing piece is used for connecting a metal sample plate to be tested; when the metal corrosion monitoring method is used for monitoring the atmospheric corrosion rate of metal, the angle meter can detect the rotation angle of the balance piece relative to the support frame in real time according to the corrosion condition of the metal sample plate to be tested, and then the corresponding first detection signal can be output in real time, so that the atmospheric corrosion rate of the metal sample plate to be tested can be determined according to the real-time first detection signal, and a plurality of test data can be obtained in a test period.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an apparatus for monitoring metal corrosion according to an embodiment of the present invention.
Icon: 100-means for monitoring corrosion of metals; 1-a stress sensor; 2-standard parts; 3-a protection box; 4-a second connecting rope; 5-an angle gauge; 6-a balance member; 7-a first cable line; 8-a signal emitting device; 9-a support frame; 10-a third connecting rope; 11-metal template; 12-a second cable wire; 13-first connecting rope.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention 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 present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present embodiment provides an apparatus 100 for monitoring metal corrosion, which can be used to detect the atmospheric corrosion rate of a metal template 11 to be tested in real time, so as to obtain a plurality of test data in a test period.
The device 100 for monitoring metal corrosion of the embodiment comprises a detection assembly, an angle gauge 5, a support frame 9 and a balance member 6, wherein the balance member 6 is rotatably arranged on the support frame 9, the balance member 6 comprises a first end and a second end which are opposite to each other along the length direction of the balance member 6, the first end of the balance member 6 is connected with the detection assembly, and the second end of the balance member 6 is used for connecting a metal sample plate 11 to be tested; the angle gauge 5 is arranged on the balance member 6 and used for detecting the rotating angle of the balance member 6 relative to the support frame 9 and outputting a first detection signal.
When the device 100 for monitoring metal corrosion is used to monitor the corrosion rate of the metal template 11, the detecting components at the two ends of the balancing member 6 and the metal template 11 to be tested are configured to be balanced with each other in an initial state, so that the balancing member 6 rotatably disposed on the supporting frame 9 is in a balanced state, at this time, the angle value of the angle gauge 5 is an initial value, for example, the reading of the angle gauge 5 is zero, in the process of monitoring the atmospheric corrosion rate of the metal template 11 to be tested, the metal template 11 to be tested is corroded by the atmosphere and rusted, thereby generating a weight change, the original balance of the balancing member 6 is damaged by the weight change of the metal template 11 to be tested, so that the balancing member 6 rotates relative to the supporting frame 9, the angle gauge 5 detects the angle of the balancing member 6 rotating relative to the supporting frame 9, and then outputting a corresponding first detecting signal in real time, so as to determine the atmospheric corrosion rate of the metal template 11 to be tested according to, thereby acquiring a plurality of test data during a test cycle.
In order to enable the balance piece 6 which is rotatably arranged on the support frame 9 to rotate more sensitively when the metal sample plate 11 to be tested is corroded by the atmosphere; the balance member 6 of this embodiment is the balancing lever, and support frame 9 is the triangular support block, and the balancing lever is directly placed in the apex angle department of triangular support block, is supported by the apex angle of triangular support block, and the balancing lever is direct to be connected with the apex angle contact of triangular support block promptly. In other embodiments, the balance piece 6 may also be a balance block or the like, and the support frame 9 may also be a cylinder, a cube or the like; in other embodiments, the balancing member 6 may also be rotatably connected to the supporting frame 9 through a rotating connection member such as a rotating shaft, so long as the first end and the second end of the balancing member 6 are unbalanced by weight and can rotate relative to the supporting frame 9.
In order to improve the accuracy of monitoring the corrosion rate of the metal template 11, the detection assembly comprises a stress sensor 1 and a standard part 2 which are connected with each other, wherein the standard part 2 is connected with a first end of a balancing part 6; the stress sensor 1 is used for detecting the stress change of the balancing member 6 and outputting a second detection signal. So, when monitoring the corrosion rate of the metal model 11 of waiting to detect with this monitoring metal corrosion's device 100, along with waiting to detect metal model 11 by atmosphere corrosion, rust, make the first end and the second end of balancing piece 6 no longer balanced, the stress that corresponding balancing piece 6 received changes, stress sensor 1 can detect the stress variation that balancing piece 6 received, can utilize angle appearance 5 to detect balancing piece 6 for support frame 9 pivoted angle simultaneously, output first detected signal, and utilize stress sensor 1 to detect the stress variation that balancing piece 6 received, output second detected signal, the real-time accurate corrosion rate of detecting the metal model 11 of waiting to detect, with the accuracy that improves and detect.
The stress sensor 1 and the standard member 2 of the present embodiment are connected by a connecting string (hereinafter referred to as a first connecting string 13); in this way, on the one hand, the connection of the standard 2 to the stress sensor 1 can be simplified by means of the first connecting string 13, and on the other hand, the detection sensitivity of the stress sensor 1 can be ensured.
In order to adjust the balance between the standard member 2 and the metal template 11 to be detected, which are arranged at the first end and the second end of the balance member 6, in the initial state of the apparatus 100 for monitoring metal corrosion, the standard member 2 is connected with the first end of the balance member 6 through the second connection rope 4, and the metal template 11 to be detected is connected with the second end of the balance member 6 through the third connection rope 10. In this way, the standard members 2 of different weights can be replaced according to the weight of the metal pattern 11 to be tested, so as to ensure that the weights of the first and second ends of the balance member 6 are balanced at the initial stage of the test, i.e., to ensure that the balance member 6 is balanced at the initial state of the monitoring. Specifically, the second connecting string 4 is detachably connected to the standard member 2, and the third connecting string 10 is detachably connected to the metal template 11 to be tested. In other embodiments, two ends of the second connecting rope 4 are detachably connected with the first ends of the standard part 2 and the balance part 6 respectively, and two ends of the third connecting rope 10 are detachably connected with the second ends of the metal sample plate 11 to be tested and the balance part 6 respectively; alternatively, the second connecting string 4 is detachably connected to the first end of the balance, and the third connecting string 10 is detachably connected to the second end of the balance 6.
The standard member 2 may be selected as needed, and may be, for example, a weight, which can determine the weight of the object.
The device 100 for monitoring metal corrosion of the embodiment further comprises a signal transmitting device 8, and the angle gauge 5 and the stress sensor 1 are in communication connection with the signal transmitting device 8; wherein, the signal transmitting device 8 can be connected with the control terminal in a communication way. Therefore, the angle gauge 5 can send the first detection signal to the signal emitting device 8, the stress sensor 1 can send the second detection signal to the signal emitting device 8, the signal emitting device 8 sends the received first detection signal and the received second detection signal to the control terminal, and the control terminal converts the atmospheric corrosion rate of the metal sample plate 11 to be detected according to the first detection signal and the second detection signal.
It should be noted that the control terminal includes a smart phone, a tablet computer, a notebook computer or a desktop computer, and the like, which is not specifically limited herein; the signal transmitting device 8 includes a WiFi signal transmitting device 8, a LoRa signal transmitting device 8, or a GPRS signal transmitting device 8, and the like, and is not limited in particular. It should be further noted that the working principle of each type of control terminal and signal transmitting device 8 is similar to that of the related art, and is not described herein again.
It should be noted that the angle gauge 5 is communicatively connected to the signal emitting device 8 through the first cable 7, and the stress sensor 1 is communicatively connected to the signal emitting device 8 through the second cable 12, and in other embodiments, the communications connection may further include a WiFi wireless communications connection, a LoRa wireless communications connection, or a GPRS wireless communications connection, which is not limited in this respect.
The device for detecting metal corrosion of the embodiment further comprises a protection box 3, the first ends of the detection assembly, the angle gauge 5, the signal emitting device 8, the support frame 9 and the balance piece 6 are all arranged in the protection box 3, and the second end of the balance piece 6 is positioned outside the protection box 3, so that a metal sample plate 11 to be tested, which is connected with the second end of the balance piece 6, is positioned outside the protection box 3. So, can utilize protection box 3 to provide the protection for detecting element, angle appearance 5, signal emission device 8, support frame 9 and partial balancing piece 6, prevent that detecting element, angle appearance 5, signal emission device 8, support frame 9 and partial balancing piece 6 from receiving atmospheric corrosion to improve the accuracy that metal corrosion rate detected.
The structure and the appearance of the protection box 3 can be selected as required, the protection box 3 of the embodiment is in a cube shape, the protection box 3 comprises a top wall, a bottom wall and four side walls which are sequentially connected end to end, two ends of the four side walls are respectively connected with the top wall and the bottom wall, the top wall, the bottom wall and the four side walls jointly enclose an accommodating space, and the first ends of the detection assembly, the angle instrument 5, the signal transmitting device 8, the support frame 9 and the balance piece 6 are all located in the accommodating space; the second end of the balancing member 6 can protrude from one of the side walls of the protection box 3, i.e. the balancing member 6 can be arranged through one of the side walls of the protection box 3. In other embodiments, the protection box 3 may also be cylindrical, or have other shapes such as a special shape, and is not limited herein.
In order to avoid the corrosion of the atmosphere to the detection assembly, the support frame 9, the signal transmitting device 8, the angle gauge 5 and part of the balance piece 6 in the protection box 3, except for the side wall through which the balance piece 6 is arranged, other side walls, the bottom wall and the top wall of the protection box 3 can be solid plates without openings, so that the atmosphere entering the inside of the protection box 3 is reduced, and the corrosion of the detection assembly, the support frame 9, the signal transmitting device 8, the angle gauge 5 and part of the balance piece 6 in the protection box 3 by the atmosphere is avoided as much as possible.
Preferably, the protection box 3 is sealed on the side wall through which the balancing member 6 passes, so as to reduce the atmosphere outside the protection box 3 from entering the protection box 3 as much as possible.
The supporting frame 9 of the embodiment comprises a bottom end and a top end which are distributed along the height direction of the supporting frame, the bottom end of the supporting frame 9 is arranged on the bottom wall of the protection box 3, and the balancing piece 6 is arranged on the top end of the supporting frame 9; thus, the support frame 9 can be prevented from interfering with the rotation of the balance member 6 to ensure the sensitivity and accuracy of detection.
Further, the angle gauge 5 is arranged adjacent to the top end of the support frame 9; on the one hand, the accuracy of the angle gauge 5 in detecting the rotation of the balance piece 6 relative to the support frame 9 is ensured, and on the other hand, the detection sensitivity of the angle gauge 5 is ensured. In this embodiment, the angle gauge 5 is opposite to the top end of the support frame 9; in other embodiments, the goniometer 5 may also be located laterally to the top end of the support 9.
The connection mode of the angle gauge 5 and the balancing member 6 can be selected according to the needs, for example: bonding, snapping, connecting with fasteners, etc., including bolts or screws, etc.; and is not particularly limited herein.
The standard member 2 and the balance member 6 of the present embodiment are each made of a high corrosion resistant material including, but not limited to, stainless steel, titanium, nickel-based alloy, etc., and are not particularly limited thereto. Adopt high corrosion resistant material preparation standard component 2 and balancing piece 6, can effectively prevent standard component 2 and balancing piece 6 from receiving atmospheric corrosion, and then ensure this monitoring metal corrosion's device 100's detection accuracy.
The first connecting string 13, the second connecting string 4 and the third connecting string 10 may be made of an anti-aging organic material, including but not limited to teflon, and the like, and are not particularly limited thereto.
It should be noted that the angle gauge 5 and the stress sensor 1 may be various types of angle gauges 5 and stress sensors 1 provided in the related art, and are not particularly limited herein.
The assembly and operation principle of the apparatus 100 for monitoring metal corrosion of the present embodiment includes:
the original weight and surface area of the metal master plate 11 to be tested are recorded and the standard 2 is selected to match its weight. Connecting the standard part 2 and the stress sensor 1 by using a first connecting rope 13, connecting the standard part 2 to the first end of the balance part 6 by using a second connecting rope 4, arranging the angle instrument 5 on the balance part 6, and connecting the metal sample plate 11 to be detected to the second end of the balance part 6 by using a third connecting rope 10. The signal emitting device 8 is arranged in the protection box 3, and the angle gauge 5 and the stress sensor 1 are in communication connection with the signal emitting device 8. The bottom end of the supporting frame 9 is arranged on the bottom wall of the protection box 3; mounting the balancing piece 6 on the top end of the support frame 9, enabling the first end of the balancing piece 6 to be positioned in the protection box 3, and enabling the second end of the balancing piece 6 and the metal template 11 to be tested connected to the second end to be positioned outside the protection box 3, and ensuring that the first end and the second end of the balancing piece 6 are balanced; the angle gauge 5 is in an initial state with the balance 6 heavily balanced, and reads zero.
Along with the corrosion of the metal sample plate 11 to be detected outside the protection box 3 by the atmosphere, the metal sample plate 11 to be detected is gradually rusted, the weight of the metal sample plate is changed, so that the first end and the second end of the balance piece 6 are not balanced any more, the balance piece 6 rotates relative to the support frame 9, the angle instrument 5 detects the rotating angle of the balance piece 6, a first detection signal is sent to the signal transmitting device 8, the stress sensor 1 detects the change of the stress on the balance piece 6, and a second detection signal is sent to the signal generating device; the signal generating device can send the received first detection signal and the second detection signal to the control terminal, and the control terminal converts the corrosion rate of the metal template 11.
In summary, the apparatus 100 for monitoring metal corrosion according to the embodiment of the present invention can determine the atmospheric corrosion rate of the metal template 11 to be tested in real time, so as to obtain a plurality of test data in a test period.
The embodiment further provides a method for monitoring metal corrosion, which is applied to the apparatus 100 for monitoring metal corrosion; the metal corrosion monitoring method can monitor the atmospheric corrosion rate of metal in real time so as to obtain a plurality of test data in a test period.
The monitoring method for metal corrosion of the embodiment comprises the following steps: and detecting the rotating angle of the balance piece 6 relative to the support frame 9 by using the angle gauge 5, outputting a first detection signal, and determining the atmospheric corrosion rate of the metal sample plate 11 to be tested according to the first detection signal. When detecting the corrosion rate of the metal template 11 to be detected, along with the corrosion of the metal template 11 to be detected by the atmosphere, rust, its weight changes, the original balance state of the balance piece 6 is destroyed, the balance piece 6 rotates relative to the support frame 9, the angle instrument 5 detects the angle of the balance piece 6 relative to the support frame 9, and output a first detection signal, so that the signal transmitting device 8 receives the first detection signal, and send the received first detection signal to the control terminal, the corrosion rate of the metal template 11 is converted by the control terminal according to the first detection signal.
The detection method of the metal corrosion also comprises the steps of detecting the stress change of the balance piece 6 by using the stress sensor 1 and outputting a second detection signal; and determining the atmospheric corrosion rate of the metal template 11 to be tested according to the first detection signal and the second detection signal. When detecting the corrosion rate of the metal sample plate 11 to be detected, the angle gauge 5 can be used for detecting the rotating angle of the balance piece 6 relative to the support frame 9 and outputting a first detection signal, so that the signal transmitting device 8 receives the first detection signal, the stress sensor 1 can also be used for detecting the stress change of the balance piece 6 and further outputting a second detection signal, so that the signal transmitting device 8 receives the second detection signal, the signal transmitting device 8 sends the first detection signal and the second detection signal to the control terminal, and the control terminal converts the corrosion rate of the metal sample plate 11 according to the first detection signal and the second detection signal. Therefore, the atmospheric corrosion rate of the metal sample plate 11 to be detected can be determined according to the first detection signal output by the angle gauge 5 and the second detection signal output by the stress sensor 1, so that the detection accuracy is improved.
In this embodiment, in the process that the balancing member 6 gradually rotates relative to the supporting frame 9 from the balanced state, the rotation angle of the balancing member 6 detected by the angle gauge 5 gradually increases, the stress sensor 1 detects that the stress applied to the balancing member 6 gradually increases or decreases, the first detection signal output by the angle gauge 5 may be from the existence to the existence and gradually increases with the increase of the angle, and the second detection signal output by the stress sensor 1 may also be from the existence to the existence and gradually increases with the increase of the angle; it should be understood that in some embodiments, the first detection signal output by the angle gauge 5 may also gradually decrease as the angle of rotation of the balance member 6 relative to the support frame 9 gradually increases, and the second detection signal output by the stress sensor 1 may also gradually decrease as the angle of rotation of the balance member 6 relative to the support frame 9 gradually increases; and is not particularly limited herein.
It should be further noted that, after receiving the first detection signal and the second detection signal, the control terminal can calculate an angle change value corresponding to the first detection signal and a stress change value corresponding to the second detection signal by a built-in program; then, calculating the corrosion rate of the metal sample plate 11 according to the angle change value and the stress change value; the above-mentioned methods for calculating the angle variation value according to the first detection signal and calculating the stress variation value according to the second detection signal are similar to those of the related art, and are not described herein again.
The following description will be made by taking the detection in an atmospheric environment of Tianjin by the apparatus 100 for monitoring metal corrosion as an example.
The device 100 for monitoring metal corrosion is placed in the Tianjin atmospheric environment for continuous monitoring test, and the corrosion rate is converted according to the monitored angle change value and the following formula:
corrosion rate (g/m)2H) ═ h [ sample original weight × tan (change in angle) + (change in stress/9.8)]/(sample area × test time)
The test results are shown in Table 1.
TABLE 1 Angle and etch Rate versus time
| Test time (moon) | 1 | 2 | 3 | 4 | 5 | 6 |
| Angle (degree) | 0.42 | 0.68 | 1.22 | 1.61 | 1.98 | 2.01 |
| Corrosion rate (g/m)2·h) | 8.2 | 8.3 | 9.2 | 9.5 | 9.8 | 10.2 |
The test result of the invention at the 6 th month is compared with the corrosion rate of 10.1g/m calculated by the method of GB/T14165 for half a year2H are very close. Therefore, the method provided by the invention not only can rapidly monitor the corrosion rate of the 6 th month, but also can obtain the corrosion rate of the 5 th month in the early stage, namely, a plurality of monitoring data can be obtained in the test period.
In summary, the metal corrosion monitoring method provided by the present invention can determine the atmospheric corrosion rate of the metal template 11 to be tested in real time, so as to obtain a plurality of test data in the test period.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The device for monitoring metal corrosion is characterized by comprising a detection assembly, an angle gauge, a support frame and a balance piece, wherein the balance piece is rotatably arranged on the support frame and comprises a first end and a second end which are opposite to each other along the length direction of the balance piece, the first end is connected with the detection assembly, and the second end is used for connecting a metal sample plate to be tested; the angle gauge is arranged on the balance piece and used for detecting the rotating angle of the balance piece relative to the support frame and outputting a first detection signal.
2. The apparatus according to claim 1, further comprising a signal transmitter, wherein the angle gauge is communicatively connected to the signal transmitter.
3. The apparatus of claim 2, wherein the signal emitting device comprises a WiFi signal emitting device, a LoRa signal emitting device or a GPRS signal emitting device.
4. The apparatus of claim 1, wherein the detection assembly includes a stress sensor and a standard member coupled to each other, the standard member coupled to the first end; the stress sensor is used for detecting stress change borne by the balance piece and outputting a second detection signal.
5. The apparatus of claim 4, wherein the stress sensor and the standard are connected by a connecting string.
6. The apparatus of claim 1, further comprising a protective enclosure, wherein the detection assembly, the angle gauge, the support frame and the first end are disposed within the protective enclosure, and the second end is disposed outside the protective enclosure.
7. The apparatus of claim 6, wherein the support frame comprises a bottom end and a top end distributed along a height direction of the support frame, the bottom end is disposed on a bottom wall of the protection box, and the balance member is disposed on the top end.
8. The apparatus of claim 7, wherein the angle gauge is disposed adjacent the top end.
9. A method for monitoring metal corrosion is applied to a device for monitoring metal corrosion, and is characterized in that the device for monitoring metal corrosion comprises the following steps: the device comprises a detection assembly, an angle gauge, a support frame and a balance piece, wherein the balance piece is rotatably arranged on the support frame and comprises a first end and a second end which are opposite to each other along the length direction of the balance piece, the first end is connected with the detection assembly, and the second end is used for connecting a metal sample plate to be tested; the angle gauge is arranged on the balance piece;
the monitoring method of the metal corrosion comprises the following steps: and detecting the rotating angle of the balance piece relative to the support frame by using the angle gauge, outputting a first detection signal, and determining the atmospheric corrosion rate of the metal sample plate to be tested according to the first detection signal.
10. The method of monitoring metal corrosion according to claim 9, wherein said sensing assembly includes a stress sensor and a standard member connected to each other, said standard member being connected to said first end; the stress sensor is used for detecting stress change borne by the balance piece and outputting a second detection signal;
the monitoring method for metal corrosion further comprises the following steps: detecting stress change borne by the balance piece by using the stress sensor, and outputting a second detection signal; and determining the atmospheric corrosion rate of the metal template to be tested according to the first detection signal and the second detection signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010433088.1A CN111551483B (en) | 2020-05-20 | 2020-05-20 | Apparatus for monitoring metal corrosion and method for monitoring metal corrosion |
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