Experimental equipment for simulating acid, alkali and salt corrosion environment and experimental method thereof
By designing experimental equipment that simulates the acid-base and salt corrosion environment, the problem that existing devices cannot simulate the acid-base and salt multi-ion environment and multi-stage corrosion is solved, and simulation experiments on various corrosion methods and stages of the samples are realized, providing more detailed and extensive corrosion data.
Patent Information
- Application Number
- CN202510218104.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-05-30
AI Technical Summary
The existing corrosion simulation experimental equipment cannot simulate the multi-ion environment of acid-base salts, cannot explore the impact of multiple corrosion methods, and the corrosion process is single, so multi-stage corrosion cannot be achieved.
An experimental equipment that simulates the acid-base and salt corrosion environment is designed, including an experimental box, an acid-base solution box, a nozzle, agitator and an observation device, which can simulate different acid-base and salt corrosion environments and complete multi-stage corrosion simulation experiments.
The device can simulate a variety of corrosion environments and methods, realize multi-stage corrosion experiments on the specimen, providing broader applicability and detailed corrosion data.
Smart Images
Figure CN120064087A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of simulation experiments, and particularly relates to an experimental device for simulating an acid-base-salt corrosion environment and an experimental method thereof. Background Art
[0002] Acid-base-salt corrosion environments widely exist in industrial production, building facilities, and natural environments, such as acid rain, karst, seawater, etc. These environments have a significant impact on the durability, service performance, and strength characteristics of materials such as metals, concrete, and rocks, and may lead to industrial accidents (such as equipment leakage, structural damage, etc.), thereby threatening human life safety and the environment. Therefore, studying the corrosion mechanism helps reduce the occurrence of such accidents and is of great significance to fields such as chemical engineering, petroleum, oceanography, aerospace, and medical devices.
[0003] Conducting simulation experiments on the corrosion process of materials is an important means to understand the true corrosion loss of materials. Currently, there are also some simulation experimental devices for material corrosion, most of which are coupled with other mechanical instruments and cannot be used alone. Therefore, the current corrosion simulation experimental devices can only simulate a single corrosion environment and do not have wide applicability for special experimental materials, and also have the following limitations: 1. The current corrosion instruments are limited to weak acid environments and cannot simulate acid-base-salt multi-ion environments; 2. The current corrosion instruments cannot explore the effects of various corrosion methods such as solution corrosion and acid mist corrosion; 3. The current corrosion instruments have a single corrosion process and cannot achieve multi-stage corrosion. Summary of the Invention
[0004] The present application aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present application provides an experimental device for simulating an acid-base-salt corrosion environment, which can simulate different acid-base-salt corrosion environments and can also complete multi-stage corrosion simulation experiments.
[0005] The present application also provides an experimental method based on the above experimental device for simulating an acid-base-salt corrosion environment.
[0006] The experimental device for simulating an acid-base-salt corrosion environment according to the first aspect embodiment of the present application includes:
[0007] An experimental chamber;
[0008] An acid-base solution tank, which is connected to the experimental chamber through a pipeline, and the acid-base solution tank injects an acid-base solution into the experimental chamber;
[0009] A spray head, which is installed on the top of the experimental chamber, and the acid-base solution tank is connected to the spray head through a pipeline;
[0010] Stirring mechanism, the stirring mechanism includes a driving motor and a stirrer, the stirrer extends into the experimental chamber, and the driving motor drives the stirrer to rotate;
[0011] Observation device, the observation device is arranged on one side of the experimental chamber to record the corrosion condition of the specimen in the experimental chamber;
[0012] Wherein, the acid-base solution tank can inject acid-base solution into the experimental chamber to submerge the specimen, completing the acid-base solution immersion experiment; the spray head can spray acid-base solution onto the specimen to complete the acid-base solution spraying experiment.
[0013] The experimental equipment for simulating the acid-base-salt corrosion environment according to the embodiment of the present application has at least the following beneficial effects: This experimental equipment can directly inject the acid-base solution in the acid-base solution tank into the experimental chamber to submerge the specimen, completing the acid-base solution immersion experiment; or spray the acid-base solution onto the surface of the specimen through the spray head to complete the acid-base solution spraying experiment, thereby simulating different corrosion scenarios.
[0014] According to some embodiments of the present application, the experimental equipment for simulating the acid-base-salt corrosion environment further includes a water storage tank, the water storage tank is connected to the experimental chamber through a pipeline, and the water storage tank can inject water into the experimental chamber.
[0015] According to some embodiments of the present application, the water storage tank is connected to the spray head through a pipeline, and the water storage tank can spray water onto the specimen through the spray head.
[0016] According to some embodiments of the present application, the experimental equipment for simulating the acid-base-salt corrosion environment further includes a drainage system, the experimental chamber is provided with a drain port, and the drainage system is connected to the drain port of the experimental chamber.
[0017] According to some embodiments of the present application, a slope is provided at the bottom of the experimental chamber, and the lower end of the slope is connected to the drain port.
[0018] According to some embodiments of the present application, a partition net is arranged in the experimental chamber, the partition net divides the experimental chamber into an experimental area and a non-experimental area, the specimen is placed in the experimental area, and the stirrer is arranged in the non-experimental area.
[0019] According to some embodiments of the present application, the experimental equipment for simulating the acid-base-salt corrosion environment further includes a water level sensor and an ion concentration sensor, the water level sensor is installed in the experimental chamber to detect the water level, and the ion concentration sensor is installed in the experimental chamber to detect the ion concentration of the acid-base solution.
[0020] According to some embodiments of the present application, the experimental equipment for simulating an acid-base-salt corrosion environment further includes a control system. Both the water level sensor and the ion concentration sensor are electrically connected to the control system, and the control system is used to monitor the experimental equipment for simulating an acid-base-salt corrosion environment.
[0021] According to some embodiments of the present application, the side plate of the experimental chamber is a transparent member, and the observation device monitors the situation inside the experimental chamber through the side plate of the experimental chamber.
[0022] According to the experimental method of the second aspect embodiment of the present application, it is carried out based on the above-mentioned experimental equipment for simulating an acid-base-salt corrosion environment, and includes an immersion corrosion mode and a spray corrosion mode;
[0023] The immersion corrosion mode includes:
[0024] Place the specimen in the experimental chamber;
[0025] The acid-base solution tank injects an acid-base solution into the experimental chamber until the acid-base solution in the experimental chamber reaches a set volume;
[0026] Turn on the stirring mechanism, and the stirrer agitates the acid-base solution in the experimental chamber so that the acid-base solution is in full contact with the specimen;
[0027] Let it stand, and the observation device continuously records the corrosion situation of the specimen;
[0028] When the set time is reached, the experimental chamber discharges the acid-base solution therein and re-injects a new acid-base solution;
[0029] Repeat the discharge and injection of the acid-base solution to complete the multi-stage corrosion of the specimen.
[0030] The spray corrosion mode includes:
[0031] Place the specimen in the experimental chamber;
[0032] Start the nozzle and continuously spray the acid-base solution in the acid-base solution tank onto the surface of the specimen;
[0033] The observation device continuously records the corrosion situation of the specimen;
[0034] When the experiment is over, turn off the nozzle, and the experimental chamber discharges the acid-base solution therein.
[0035] According to the experimental method of the embodiments of the present application, it has at least the following beneficial effects: It can carry out immersion experiments and spray experiments on specimens, and in the immersion experiment, the immersion corrosion of the specimens can be repeatedly carried out, so as to study the changes of the specimens under multi-stage corrosion.
[0036] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings
[0037] The drawings are used to provide a further understanding of the technical solutions disclosed in the present application, and constitute a part of the specification. Together with the embodiments disclosed in the present application, they are used to explain the technical solutions of the present disclosure, and do not constitute a limitation to the technical solutions disclosed in the present application.
[0038] Figure 1 It is a schematic structural diagram of an experimental device for simulating an acid-base-salt corrosion environment in an embodiment of the present application.
[0039] Reference numerals: 100 - experimental chamber, 110 - ramp, 120 - partition net, 121 - experimental area, 122 - non-experimental area, 200 - acid-base solution tank, 300 - spray head, 400 - stirring mechanism, 410 - driving motor, 420 - stirrer, 500 - observation device, 600 - water storage tank, 700 - drainage system, 800 - water level sensor, 900 - ion concentration sensor, 1000 - control system, 1100 - specimen. Detailed Description of the Embodiments
[0040] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.
[0041] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.
[0042] In the description of the present application, the meaning of "a number of" is more than one, the meaning of "a plurality of" is more than two, and understandings such as greater than, less than, exceeding, etc. do not include the recited number, and understandings such as above, below, within, etc. include the recited number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.
[0043] In the description of this application, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in this application in combination with the specific content of the technical solution.
[0044] In the description of this application, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0045] Acid-base-salt corrosion environments widely exist in industrial production, building facilities, and natural environments, such as acid rain, karst, seawater, etc. These environments have obvious effects on the durability, service performance, and strength characteristics of materials such as metals, concrete, and rocks, and may lead to industrial accidents (such as equipment leakage, structural damage, etc.), thereby threatening human life safety and the environment. Therefore, studying the corrosion mechanism helps to reduce the occurrence of such accidents and is of great significance to fields such as chemical engineering, petroleum, marine, aerospace, and medical devices.
[0046] Conducting simulation experiments on the corrosion process of materials is an important means to master the actual corrosion loss of materials. Currently, there are also some simulation experimental devices for material corrosion, most of which are coupled with other mechanical instruments and cannot be used alone. Therefore, the current corrosion simulation experimental devices can only simulate a single corrosion environment and do not have wide applicability for special experimental materials, and there are also the following limitations: 1. The current corrosion instruments are limited to weak acid environments and cannot simulate acid-base-salt multi-ion environments; 2. The current corrosion instruments cannot explore the effects of various corrosion methods such as solution corrosion and acid mist corrosion; 3. The current corrosion instruments have a single corrosion process and cannot achieve multi-stage corrosion.
[0047] In response to this, this application proposes an experimental device for simulating acid-base-salt corrosion environments, which can directly inject the acid-base solution in the acid-base solution tank 200 into the experimental tank 100 to submerge the specimen 1100 to complete the acid-base solution immersion experiment; or spray the acid-base solution onto the surface of the specimen 1100 through the nozzle 300 to complete the acid-base solution spraying experiment, thereby simulating different corrosion scenarios.
[0048] In addition, the present application also proposes an experimental method for the above-mentioned experimental equipment for simulating an acid-base-salt corrosion environment, which can perform immersion experiments and spraying experiments on the specimen 1100, and in the immersion experiment, the immersion corrosion of the specimen 1100 can be repeatedly carried out to study the changes of the specimen 1100 under multi-stage corrosion.
[0049] Referring to Figure 1 , the experimental equipment for simulating an acid-base-salt corrosion environment in the first aspect embodiment of the present application includes an experimental chamber 100, an acid-base solution tank 200, a spray head 300, a stirring mechanism 400, and an observation device 500. Among them, the experimental chamber 100 is the main structure of the experimental equipment for simulating an acid-base-salt corrosion environment, and the corrosion simulation experiment of the specimen 1100 is carried out in the experimental chamber 100. The specimen 1100 can be a metal, concrete or rock material. The acid-base solution tank 200 is used to store the acid-base solution, and can inject the acid-base solution into the experimental chamber 100 through a pipeline to carry out an immersion corrosion experiment, or spray the acid-base solution onto the surface of the specimen 1100 through the spray head 300 to carry out a spraying corrosion experiment. The stirring mechanism 400 is used to stir the acid-base solution in the experimental chamber 100, and the observation device 500 is used to observe and record the corrosion changes of the specimen 1100 in the experimental chamber 100.
[0050] Specifically, the acid-base solution tank 200 is connected to the experimental chamber 100 through a pipeline, and the acid-base solution tank 200 injects the acid-base solution into the experimental chamber 100 to complete the immersion corrosion experiment. The spray head 300 is installed on the top of the experimental chamber 100, and the acid-base solution tank 200 is connected to the spray head 300 through a pipeline. The spray head 300 can spray the acid-base solution onto the specimen 1100 in the experimental chamber 100 to complete the spraying corrosion experiment.
[0051] The stirring mechanism 400 includes a driving motor 410 and a stirrer 420. The stirrer 420 extends into the experimental chamber 100, and the driving motor 410 drives the stirrer 420 to rotate, so that the stirrer 420 can stir the acid-base solution in the experimental chamber 100, make it fully contact with the specimen 1100, and make the pH of the acid-base solution in the experimental chamber 100 more uniform.
[0052] The observation device 500 is arranged on one side of the experimental chamber 100 to record the corrosion condition of the specimen 1100 in the experimental chamber 100, so as to record the corrosion changes of the specimen 1100 in real time and provide a data basis for subsequent theoretical analysis.
[0053] Among them, the acid-base solution tank 200 can inject the acid-base solution into the experimental chamber 100 to submerge the specimen 1100 and complete the acid-base solution immersion experiment; the spray head 300 can spray the acid-base solution onto the specimen 1100 to complete the acid-base solution spraying experiment, so that more diverse corrosion simulation experiments can be completed to meet different experimental requirements.
[0054] Further, the experimental device for simulating the acid-base-salt corrosion environment further includes a water storage tank 600. The water storage tank 600 is connected to the experimental chamber 100 through a pipeline. The water storage tank 600 can inject water into the experimental chamber 100, thereby changing the concentration of the acid-base solution in the experimental chamber 100. The stirring mechanism 400 can promote the mixing of water and the acid-base solution.
[0055] Further, the water storage tank 600 is connected to the nozzle 300 through a pipeline. The water storage tank 600 can spray water on the specimen 1100 through the nozzle 300, thereby changing the concentration of the acid-base solution on the surface of the specimen 1100. In some embodiments, the nozzle 300 can switch between spraying the acid-base solution and spraying water; in other embodiments, the number of nozzles 300 is two. One nozzle 300 can spray the acid-base solution, and the other nozzle 300 can spray water. By switching the opening and closing of different nozzles 300, the sprayed substance can be controlled.
[0056] Further, the experimental device for simulating the acid-base-salt corrosion environment further includes a drainage system 700. The experimental chamber 100 is provided with a drainage port. The drainage system 700 is connected to the drainage port of the experimental chamber 100 and is used to recover the remaining acid-base solution after the experiment ends.
[0057] Further, a slope 110 is provided at the bottom of the experimental chamber 100. The lower end of the slope 110 is connected to the drainage port. Thus, the slope 110 can guide the acid-base solution in the experimental chamber 100 to flow towards the drainage port and finally flow into the drainage system 700.
[0058] Further, a partition net 120 is arranged in the experimental chamber 100. The partition net 120 divides the experimental chamber 100 into an experimental area 121 and a non-experimental area 122. The specimen 1100 is placed in the experimental area 121, and the stirrer 420 is arranged in the non-experimental area 122. Thus, zoning is realized through the partition net 120. On the one hand, it does not affect the free flow of the acid-base solution. On the other hand, the partition net 120 can prevent the stirrer 420 from interfering with the specimen 1100 when rotating, thereby ensuring the smooth progress of the experiment.
[0059] Further, the experimental device for simulating the acid-base-salt corrosion environment further includes a water level sensor 800 and an ion concentration sensor 900. The water level sensor 800 is installed in the experimental chamber 100 to detect the water level, and the ion concentration sensor 900 is installed in the experimental chamber 100 to detect the ion concentration of the acid-base solution. Thus, the injection volume of the acid-base solution can be closed-loop controlled based on the detection data of the water level sensor 800 and the ion concentration sensor 900.
[0060] Further, the experimental equipment for simulating the acid-base-salt corrosion environment further includes a control system 1000. The water level sensor 800 and the ion concentration sensor 900 are both electrically connected to the control system 1000, and the control system 1000 is used to monitor the experimental equipment for simulating the acid-base-salt corrosion environment.
[0061] Further, the side plate of the experimental chamber 100 is a transparent member, and the observation device 500 monitors the situation inside the experimental chamber 100 through the side plate of the experimental chamber 100. Specifically, the observation device 500 is a camera, a camera or other electronic devices capable of taking images.
[0062] The experimental method in the second aspect embodiment of the present application is based on the above experimental equipment for simulating the acid-base-salt corrosion environment, and includes an immersion corrosion mode and a spray corrosion mode.
[0063] Among them, the immersion corrosion mode includes the following steps:
[0064] S110. Place the specimen 1100 in the experimental chamber 100;
[0065] S120. The acid-base solution tank 200 injects the acid-base solution into the experimental chamber 100 until the acid-base solution in the experimental chamber 100 reaches the set volume; The segmented immersion method can be adopted. For example, first immerse 1 / 4 of the volume of the specimen 1100 for one day, then immerse 1 / 2 of the volume of the specimen 1100 on the second day, then immerse 3 / 4 of the volume of the specimen 1100 on the third day, and finally immerse it completely;
[0066] S130. Turn on the stirring mechanism 400, and the stirrer 420 stirs the acid-base solution in the experimental chamber 100 so that the acid-base solution is in full contact with the specimen 1100;
[0067] S140. Let it stand, and the observation device 500 continuously records the corrosion situation of the specimen 1100;
[0068] S150. When the set time is reached, the experimental chamber 100 discharges the acid-base solution therein and injects a new acid-base solution;
[0069] S160. Repeat the discharge and injection of the acid-base solution to complete the multi-stage corrosion of the specimen 1100.
[0070] The spray corrosion mode includes:
[0071] S210. Place the specimen 1100 in the experimental chamber 100;
[0072] S220. Start the nozzle 300 and continuously spray the acid-base solution in the acid-base solution tank onto the surface of the specimen 1100;
[0073] S230. The observation device 500 continuously records the corrosion situation of the specimen.
[0074] S240. At the end of the experiment, close the nozzle 300, and the experimental chamber 100 discharges the acid-base solution therein.
[0075] The embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present application. In addition, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
Claims
1. An experimental device for simulating acid, alkali and salt corrosion environment, characterized in that: include: Experiment box; An acid-base solution box, the acid-base solution box is connected to the experimental box through a pipeline, and the acid-base solution box injects acid-base solution into the experimental box; A nozzle, which is installed on the top of the experimental box, and the acid-base solution box is connected to the nozzle through a pipeline; A stirring mechanism, the stirring mechanism comprising a driving motor and a stirrer, the stirrer extends into the experimental box, and the driving motor drives the stirrer to rotate; An observation device, which is arranged on one side of the test box to record the corrosion condition of the sample in the test box; Among them, the acid-base solution box can inject acid-base solution into the test box to submerge the sample and complete the acid-base solution immersion experiment; the nozzle can spray the acid-base solution to the sample to complete the acid-base solution spraying experiment.
2. The experimental equipment for simulating acid, alkali and salt corrosion environment according to claim 1, characterized in that: The experimental equipment for simulating acid-base-salt corrosion environment also includes a water storage tank, which is connected to the experimental box through a pipeline, and the water storage tank can inject water into the experimental box.
3. The experimental equipment for simulating acid, alkali and salt corrosion environment according to claim 2, characterized in that: The water storage tank is connected to the spray head through a pipeline, and the water storage tank can spray water to the sample through the spray head.
4. The experimental equipment for simulating acid, alkali and salt corrosion environment according to claim 1, characterized in that: The experimental equipment for simulating acid, alkali and salt corrosion environment also includes a drainage system. The experimental box is provided with a drainage port, and the drainage system is connected to the drainage port of the experimental box.
5. The experimental equipment for simulating acid, alkali and salt corrosion environment according to claim 4, characterized in that: A slope is arranged at the bottom of the experimental box, and a lower end of the slope is connected to the drain port.
6. The experimental equipment for simulating acid, alkali and salt corrosion environment according to claim 1, characterized in that: A partition net is arranged in the experimental box, and the partition net divides the experimental box into an experimental area and a non-experimental area. The sample is placed in the experimental area, and the stirrer is arranged in the non-experimental area.
7. The experimental equipment for simulating acid, alkali and salt corrosion environment according to claim 1, characterized in that: The experimental equipment for simulating acid-base-salt corrosion environment also includes a water level sensor and an ion concentration sensor. The water level sensor is installed in the experimental box to detect the water level, and the ion concentration sensor is installed in the experimental box to detect the ion concentration of the acid-base solution.
8. The experimental equipment for simulating acid, alkali and salt corrosion environment according to claim 7, characterized in that: The experimental equipment for simulating acid, alkali and salt corrosion environment also includes a control system. The water level sensor and the ion concentration sensor are both electrically connected to the control system. The control system is used to monitor the experimental equipment for simulating acid, alkali and salt corrosion environment.
9. The experimental equipment for simulating acid, alkali and salt corrosion environment according to claim 1, characterized in that: The side panels of the experimental box are transparent parts, and the observation device monitors the situation in the experimental box through the side panels of the experimental box.
10. An experimental method based on the experimental equipment for simulating acid, alkali and salt corrosion environment as claimed in any one of claims 1 to 9, characterized in that: Includes immersion corrosion mode and spray corrosion mode; The immersion corrosion modes include: placing the sample in the test box; The acid-base solution box injects the acid-base solution into the experimental box until the acid-base solution in the experimental box reaches a set volume; Turning on the stirring mechanism, the stirrer stirs the acid and alkali solution in the test box so that the acid and alkali solution are in full contact with the sample; Allowing the sample to stand still, the observation device continuously records the corrosion condition of the sample; When the set time is reached, the acid and alkali solution in the test box is discharged and new acid and alkali solution is refilled; The discharge and injection of acid and alkali solutions are repeated to complete the multi-stage corrosion of the sample. The spray corrosion mode includes: placing the sample in the experimental box; Starting the spray head to continuously spray the acid-base solution in the acid-base solution tank onto the surface of the sample; The observation device continuously records the corrosion condition of the sample; After the experiment is over, the nozzle is closed and the acid and alkali solutions in the experimental box are discharged.