Grounding material soil corrosion test system

Abstract

The invention discloses a grounding material soil corrosion test system. The system comprises a corrosion test module and a corrosion control module, the corrosion test module comprises at least one corrosion test box and an electrochemical workstation; the corrosion control module is connected with the corrosion test box, and the corrosion control module is used for adjusting soil corrosion parameters of the soil environment sample to form a simulated working environment of the grounding material to be tested; wherein the corrosion control module comprises an electrochemical corrosion sub-module, a current corrosion sub-module, a microbial corrosion sub-module and a battery corrosion sub-module; the soil corrosion parameters comprise physical and chemical parameters, microorganism content parameters and gas concentration parameters of the soil environment sample and current parameters on the grounding material to be measured; and the electrochemical workstation is electrically connected with the corrosion test box and is used for testing corrosion result data of the grounding material to be tested in the simulated working environment. According to the technical scheme of the embodiment of the invention, a real working environment can be simulated, and the soil corrosivity of the grounding material can be comprehensively evaluated.

Description

Technical Field

[0001] The invention relates to the field of electric power technology, and in particular to a grounding material soil corrosion test system. Background Art

[0002] Grounding materials are key components for safe grounding of electrical equipment and systems. They are not only an important part of the power system, but also an indispensable safety measure in buildings and infrastructure.

[0003] Soil corrosion of grounding materials refers to the corrosion phenomenon of grounding materials in the soil environment due to factors such as the chemical composition, moisture, temperature and electrical characteristics of the soil. Soil corrosion not only affects the performance and service life of grounding materials, but may also have a serious impact on the safe operation of the entire electrical system. In addition to soil corrosion, the corrosion of grounding materials is also closely related to the influence of various factors. However, the existing technology of soil corrosion testing of grounding materials is often achieved by strengthening a single factor in the corrosion process, which is far from the actual soil corrosion situation. The interaction of multiple factors makes it very difficult to measure and analyze the actual situation of soil corrosion of grounding materials, resulting in a lack of test technology for comprehensively evaluating the soil corrosiveness of grounding materials. Summary of the invention

[0004] The invention provides a soil corrosion test system for grounding materials, so as to solve the problem that the soil corrosion test on grounding materials is far from the actual soil corrosion situation and the soil corrosivity of grounding materials cannot be fully evaluated.

[0005] According to one aspect of the present invention, there is provided a grounding material soil corrosion test system, comprising: a corrosion test module and a corrosion control module;

[0006] The corrosion test module includes at least one corrosion test box and an electrochemical workstation, wherein the corrosion test box is filled with a soil environment sample, and a three-electrode system connected to a grounding material to be tested is inserted into the soil environment sample;

[0007] The corrosion control module is connected to the corrosion test box, and the corrosion control module is used to adjust the soil corrosion parameters of the soil environment sample to form a simulated working environment for the grounding material to be tested;

[0008] Wherein, the corrosion control module includes an electrochemical corrosion submodule, a current corrosion submodule, a microbial corrosion submodule and a battery corrosion submodule; the soil corrosion parameters include the physical and chemical parameters of the soil environment sample, microbial content parameters, gas concentration parameters and current parameters on the grounding material to be tested;

[0009] The electrochemical workstation is electrically connected to the corrosion test box and is used to test the corrosion result data of the grounding material to be tested in the simulated working environment.

[0010] Optionally, the corrosion test box includes an isolation layer, and the isolation layer is used to isolate the interior of the corrosion test box to form two chambers;

[0011] The top of each chamber is provided with an opening, and the opening is used to allow the wire connected to the electrochemical workstation to pass through; each chamber is provided with a three-electrode system connected to the grounding material to be tested;

[0012] Wherein, the working electrode of the three-electrode system includes the grounding material to be tested, and the grounding material to be tested in each of the chambers is different.

[0013] Optionally, the isolation layer includes a partition and a semipermeable membrane.

[0014] Optionally, the soil environment sample includes soil simulation liquid and sterilized soil.

[0015] Optionally, the electrochemical corrosion submodule includes a heating oscillator, a humidity regulator, a pH regulator, a moisture regulator, a salt concentration regulator, and a harmful ion concentration regulator;

[0016] The heating oscillator, the humidity regulator, the pH regulator, the water regulator, the salt concentration regulator and the harmful ion concentration regulator are all connected to each of the chambers.

[0017] Optionally, the moisture regulator includes a water tank and a water pump.

[0018] Optionally, the current corrosion submodule includes an AC power supply and a DC power supply;

[0019] The AC power supply and the DC power supply are both electrically connected to the grounding material to be tested in each of the chambers.

[0020] Optionally, the microbial corrosion submodule includes a microbial cultivation unit and a microbial extraction unit;

[0021] The microorganism cultivation unit and the microorganism extraction unit are both connected to each of the chambers; the microorganism cultivation unit is used to inoculate microorganisms with a preset concentration into the soil environment sample, and the microorganism extraction unit is used to extract the soil environment sample for microorganism content testing.

[0022] Optionally, the battery corrosion submodule includes an oxygen concentration regulator and a galvanic corrosion unit;

[0023] The oxygen concentration regulator is used to adjust the oxygen concentration in each of the chambers; the galvanic corrosion unit includes a wire, and the wire is used to connect the grounding materials to be tested in the two chambers.

[0024] Optionally, the grounding material soil corrosion test system further includes: a data integration submodule;

[0025] The data integration submodule is electrically connected to the electrochemical workstation, the electrochemical corrosion submodule, the current corrosion submodule, the microbial corrosion submodule and the battery corrosion submodule respectively, and is used to output and display the received soil corrosion parameters and the corrosion result data.

[0026] The soil corrosion test system for grounding materials provided by the embodiment of the present invention is provided with a corrosion test module and a corrosion control module. Among them, the corrosion control module forms a simulated working environment for the grounding material to be tested by adjusting the soil corrosion parameters, and the corrosion test module includes at least one corrosion test box and an electrochemical workstation. The corrosion test box is equipped with soil environment samples and a three-electrode system, the grounding material to be tested is electrically connected to the three-electrode system, and the electrochemical workstation is electrically connected to the three-electrode system in the corrosion test box to test the soil corrosiveness of the grounding material to be tested. The corrosion control module includes an electrochemical corrosion submodule, an electric current corrosion submodule, a microbial corrosion submodule and a battery corrosion submodule, which can adjust the parameters of the soil environment sample where the grounding material to be tested is located from multiple influencing factors, so that the formed simulated working environment is close to the soil conditions when the grounding material to be tested is actually working, thereby realizing a comprehensive assessment of the soil corrosiveness to the grounding material to be tested, which is conducive to improving the test accuracy of the soil corrosiveness of the grounding material to be tested.

[0027] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 is a structural schematic diagram of a grounding material soil corrosion test system provided according to an embodiment of the present invention;

[0030] Figure 2is a structural schematic diagram of another grounding material soil corrosion test system provided according to an embodiment of the present invention;

[0031] Figure 3 It is a structural schematic diagram of another grounding material soil corrosion test system provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] As described in the background technology, grounding materials are key components for safe grounding of electrical equipment and systems, and are designed to effectively reduce electrical failures, electromagnetic interference, and avoid static electricity accumulation, thereby ensuring the safety of people and equipment. Soil corrosion is the most complex electrochemical corrosion system, and the corrosion of grounding materials is not only affected by soil electrochemical corrosion, but also closely related to factors such as AC and / or DC current corrosion, microbial corrosion, and macroscopic battery corrosion. The interaction of the above-mentioned multiple factors makes it very difficult to measure and analyze the actual situation of soil corrosion of grounding materials.

[0035] At present, there are various types of grounding materials on the market, and the quality varies. The main types include galvanized steel, copper-clad steel, pure copper and conductive polymer composite grounding materials. Comprehensively evaluating the soil corrosion of different grounding materials through accelerated soil corrosion tests is an important basis for guiding the scientific application of grounding materials, and is also an important support for grounding design, engineering construction, operation and maintenance, and life prediction. However, the existing technology for accelerated testing of soil corrosion of grounding materials is often achieved by strengthening a single factor in the corrosion process, which is far from the actual soil corrosion situation. There is a lack of test technology for comprehensively evaluating the soil corrosion of grounding materials, such as: only simulating the impact of microbial factors on the corrosion of grounding materials.

[0036] Based on the above technical problems, the embodiments of the present invention propose the following technical solutions:

[0037] An embodiment of the present invention provides a grounding material soil corrosion test system. Figure 1 The present invention provides a schematic diagram of the structure of a grounding material soil corrosion test system. Figure 1 As shown, the grounding material soil corrosion test system includes: a corrosion test module 100 and a corrosion control module 200.

[0038] The corrosion test module 100 includes at least one corrosion test box 101 and an electrochemical workstation 102. The corrosion test box 101 is filled with a soil environment sample, and a three-electrode system connected to the grounding material to be tested is inserted into the soil environment sample; the corrosion control module 200 is connected to the corrosion test box 101, and the corrosion control module 200 is used to adjust the soil corrosion parameters of the soil environment sample to form a simulated working environment for the grounding material to be tested.

[0039] Among them, the corrosion control module 200 includes an electrochemical corrosion submodule 210, a current corrosion submodule 220, a microbial corrosion submodule 230 and a battery corrosion submodule 240; the soil corrosion parameters include the physical and chemical parameters of the soil environment sample, the microbial content parameters, the gas concentration parameters and the current parameters on the grounding material to be tested; the electrochemical workstation 102 is electrically connected to the corrosion test box 101, and is used to test the corrosion result data of the grounding material to be tested in a simulated working environment.

[0040] Specifically, the corrosion test module 100 may include at least one corrosion test box 101, in which a soil environment sample is installed. The electrochemical workstation 102 arranged outside the corrosion test box 101 is electrically connected to each electrode of the three-electrode system inside the corrosion test box 101. Among them, the three-electrode system includes a counter electrode, a reference electrode and a working electrode, and the grounding material to be tested serves as the working electrode. The corrosion control module 200 is connected to the set corrosion test box 101, and can adjust the relevant soil corrosion parameters of the soil environment sample in the corrosion test box 101 that affects the corrosion result of the grounding material to be tested, so as to simulate the real environment of the grounding material to be tested when working from various factors that affect the corrosion of the grounding material to be tested, and test the electrochemical properties of the grounding material to be tested through the electrochemical workstation 102. Exemplarily, Figure 1 The case where the corrosion test module 100 includes two corrosion test boxes 101 is shown, which is not limited here. Each corrosion test box 101 is connected to the corrosion control module 200 and the electrochemical workstation 102. The corrosion control module 200 can adjust the soil corrosion parameters of the soil environment samples in each corrosion test box 101 respectively, so that the soil environment samples in each corrosion test box 101 can simulate different working environments when the grounding material to be tested is actually working, so that the corrosion conditions of the grounding material to be tested under different real working environments can be measured.

[0041] The corrosion control module 200 may include an electrochemical corrosion submodule 210, a current corrosion submodule 220, a microbial corrosion submodule 230, and a battery corrosion submodule 240. The electrochemical corrosion submodule 210 is used to adjust the physical and chemical parameters of the soil environment sample, which characterize the physical and chemical properties of the soil environment sample; the current corrosion submodule 220 is used to adjust the current borne by the grounding material to be tested; the microbial corrosion submodule 230 is used to adjust the microbial content in the soil environment sample; and the battery corrosion submodule 240 is used to adjust the relevant parameters of the electrochemical cell composed of the grounding material to be tested to perform different battery tests, such as concentration difference test, galvanic corrosion test, etc. Compared with the related art which generally only strengthens a single factor in the corrosion process to conduct soil corrosion test on grounding materials, the embodiment of the present invention integrates the electrochemical corrosion submodule 210, the current corrosion submodule 220, the microbial corrosion submodule 230 and the battery corrosion submodule 240 into the corrosion test system of the grounding material, so as to adjust the parameters of the soil environment sample from multiple factors, create a simulated working environment for the grounding material to be tested, so that the simulated working environment of the grounding material to be tested during the corrosion test is similar to the soil condition during the actual working state, thereby achieving a comprehensive assessment of the soil corrosiveness to the grounding material to be tested, which is beneficial to improving the test accuracy of the soil corrosiveness of the grounding material to be tested.

[0042] The soil corrosion test system for grounding materials provided by the embodiment of the present invention is provided with a corrosion test module and a corrosion control module. Among them, the corrosion control module forms a simulated working environment for the grounding material to be tested by adjusting the soil corrosion parameters, and the corrosion test module includes at least one corrosion test box and an electrochemical workstation. The corrosion test box is equipped with soil environment samples and a three-electrode system, the grounding material to be tested is electrically connected to the three-electrode system, and the electrochemical workstation is electrically connected to the three-electrode system in the corrosion test box to test the soil corrosiveness of the grounding material to be tested. The corrosion control module includes an electrochemical corrosion submodule, an electric current corrosion submodule, a microbial corrosion submodule and a battery corrosion submodule, which can adjust the parameters of the soil environment sample where the grounding material to be tested is located from multiple influencing factors, so that the formed simulated working environment is close to the soil conditions when the grounding material to be tested is actually working, thereby realizing a comprehensive assessment of the soil corrosiveness to the grounding material to be tested, which is conducive to improving the test accuracy of the soil corrosiveness of the grounding material to be tested.

[0043] Optionally, Figure 2 FIG. 1 is a schematic diagram of another grounding material soil corrosion test system provided by an embodiment of the present invention. Figure 2 As shown, the corrosion test box 101 includes an isolation layer 103 , and the isolation layer 103 is used to isolate the interior of the corrosion test box 101 to form two chambers 104 .

[0044] The top of each chamber 104 is provided with an opening for passing the wire connected to the electrochemical workstation 102; each chamber 104 is provided with a three-electrode system connected to the grounding material to be tested; wherein the working electrode 105 of the three-electrode system includes the grounding material to be tested, and the grounding material to be tested in each chamber 104 is different.

[0045] Specifically, an isolation layer 103 is provided in the middle position inside the corrosion test box 101, and the isolation layer 103 can separate a complete cavity inside the corrosion test box 101 into two chambers 104 of the same size. Exemplarily, the isolation layer 103 includes a partition and a semipermeable membrane. Among them, a partition is provided as the isolation layer 103, and there is no ion exchange between the two chambers 104 in the same corrosion test box 101; and a semipermeable membrane is provided as the isolation layer 103, and there is ion exchange between the two chambers 104 in the same corrosion test box 101. In actual application, the partition or the semipermeable membrane can be flexibly replaced as the isolation layer 103 in the corrosion test box 101 according to the needs of the specific test, and there is no limitation here. A certain number of openings are provided on the top of each chamber 104, so that the wire electrically connected to the electrochemical workstation 102 can enter the chamber 104 through the opening and be electrically connected to the three-electrode system. The three-electrode system includes a counter electrode 106, a reference electrode 107 and a working electrode 105. The grounding material to be tested is connected to the electrochemical workstation 102 as the working electrode 105 to test the soil corrosion performance of the grounding material to be tested.

[0046] For each chamber 104 provided in at least one corrosion test box 101, the grounding materials to be tested therein can be set to be the same material or different materials, which is not limited here. In addition, illustratively, the soil environment sample includes soil simulation liquid and sterilized soil.

[0047] Thus, the grounding material soil corrosion test system provided by the embodiment of the present invention can test the corrosion conditions of the same grounding material to be tested in different simulated working environments, and can also test the corrosion conditions of different grounding materials to be tested in the same simulated working environment.

[0048] Optionally, Figure 3 FIG. 1 is a schematic diagram of the structure of another grounding material soil corrosion test system provided by an embodiment of the present invention. Figure 3 As shown, the electrochemical corrosion submodule 210 includes a heating oscillator 211 , a humidity regulator 212 , a pH regulator 213 , a moisture regulator 214 , a salt concentration regulator 215 and a harmful ion concentration regulator 216 .

[0049] The heating oscillator 211 , the humidity regulator 212 , the pH regulator 213 , the water regulator 214 , the salt concentration regulator 215 and the harmful ion concentration regulator 216 are all connected to each chamber 104 .

[0050] Specifically, the heating oscillator 211 is arranged outside the corrosion test box 101, and can adjust the temperature in each chamber 104 of at least one corrosion test box 101, so that each chamber 104 is kept at a constant preset temperature for corrosion testing. The humidity regulator 212 can test and adjust the humidity value inside each chamber 104 of each corrosion test box 101, so that the grounding material to be tested is in a constant preset humidity environment for corrosion testing. The pH regulator 213 can adjust the pH of the soil environment sample contained in each chamber 104 of each corrosion test box 101, so that the soil environment sample in each chamber 104 maintains the same pH or maintains different pH, so as to perform corresponding soil corrosion tests on the grounding material to be tested in each chamber 104. The moisture regulator 214 can test and adjust the moisture content of the soil environment sample in each chamber 104. Exemplarily, the moisture regulator 214 includes a water tank and a water pump. The water stored in the water tank is transported to the soil environment sample in the corresponding chamber 104 by a water pump, thereby adjusting the water content in the soil environment sample. The salt concentration regulator 215 can test and adjust the soluble salt content of the soil environment sample. The harmful ion concentration regulator 216 can test and adjust the harmful ion concentration in the soil environment sample. For example, the harmful ions may include SO4 2- .

[0051] The temperature, humidity, pH, water content, salt concentration, harmful ion concentration and other parameters of the soil environment samples in each chamber 104 are tested and adjusted through the electrochemical corrosion submodule 210. Taking into account various factors of the real soil environment, the physical and chemical parameters of the soil environment samples can be changed, and the purpose of accelerating the corrosion of the grounding material to be tested can be achieved by changing the kinetic parameters of electrochemical corrosion, so that the grounding material to be tested in each chamber 104 is in a simulated working environment close to the real working environment, which is conducive to improving the accuracy of the soil corrosion test of the grounding material to be tested.

[0052] Optionally, based on the above embodiments, continue to refer to Figure 3 The current corrosion submodule 220 includes an AC power supply 221 and a DC power supply 222 .

[0053] The AC power source 221 and the DC power source 222 are both electrically connected to the grounding material to be tested in each chamber 104 .

[0054] Specifically, both the AC power supply 221 and the DC power supply 222 can be electrically connected to the grounding material to be tested in each chamber 104 through corresponding wires. During the test, an AC current of a certain magnitude is applied to the grounding material to be tested through the AC power supply 221 to simulate the effect of the AC current on the corrosion of the grounding material to be tested; or a DC current of a certain magnitude is applied to the grounding material to be tested through the DC power supply 222 to simulate the effect of the DC current on the corrosion of the grounding material to be tested.

[0055] Optionally, based on the above embodiments, continue to refer to Figure 3 The microbial corrosion submodule 230 includes a microbial cultivation unit 231 and a microbial extraction unit 232 .

[0056] The microorganism cultivation unit 231 and the microorganism extraction unit 232 are both connected to each chamber 104; the microorganism cultivation unit 231 is used to inoculate microorganisms with a preset concentration into the soil environment sample, and the microorganism extraction unit 232 is used to extract the soil environment sample for microorganism content testing.

[0057] Specifically, microorganisms that may exist in a real soil environment are cultured in the microbial cultivation unit 231. During the test, the microbial cultivation unit 231 can inoculate a preset concentration of microorganisms into the soil environment samples in each chamber 104 to simulate the microbial influencing factors in the real working environment of the grounding material to be tested. Exemplarily, the microbial cultivation unit 231 can inoculate the same concentration of microorganisms into the soil environment samples in different chambers 104, or can inoculate different concentrations of microorganisms into the soil environment samples in different chambers 104, so as to test the influence of microorganisms on the corrosion of the grounding material to be tested. The microbial extraction unit 232 can extract soil environment samples in each chamber 104 at a certain period to count the microbial content in the extracted soil environment samples under a microscope and determine the growth of microorganisms during the corrosion test.

[0058] Optionally, based on the above embodiments, continue to refer to Figure 3 The battery corrosion submodule 240 includes an oxygen concentration regulator 241 and a galvanic corrosion unit 242 .

[0059] The oxygen concentration regulator 241 is used to adjust the oxygen concentration in each chamber 104 ; the galvanic corrosion unit 242 includes a wire, which is used to connect the grounding materials to be tested in the two chambers 104 .

[0060] Specifically, the oxygen concentration regulator 241 can test the oxygen concentration in the gas environment of each chamber 104, and according to the oxygen concentration obtained by the test, introduce oxygen of corresponding concentration into each chamber 104 to adjust the ratio of nitrogen to oxygen in the gas environment, so as to facilitate the oxygen concentration difference cell test on the grounding material to be tested in each chamber 104. The galvanic corrosion unit 242 is provided with a wire. In the case where different grounding materials to be tested are arranged in the two chambers 104 of the corrosion test box 101, the grounding materials to be tested in the two chambers 104 can be electrically connected through the galvanic corrosion unit 242 through the wire to test the electrochemical properties of the grounding materials to be tested in each chamber 104, thereby realizing the galvanic corrosion test of the grounding materials to be tested.

[0061] Optionally, based on the above embodiments, continue to refer to Figure 3 The grounding material soil corrosion test system also includes: a data integration submodule 300.

[0062] The data integration submodule 300 is electrically connected to the electrochemical workstation 102, the electrochemical corrosion submodule 210, the current corrosion submodule 220, the microbial corrosion submodule 230 and the battery corrosion submodule 240 respectively, and the data integration submodule 300 is used to output and display the received soil corrosion parameters and corrosion result data.

[0063] Specifically, the data integration submodule 300 can receive various parameters regulated by the electrochemical corrosion submodule 210, the current corrosion submodule 220, the microbial corrosion submodule 230 and the battery corrosion submodule 240, for example, the physical and chemical parameters of the soil environment sample, the microbial content parameters, the gas concentration parameters and the current parameters on the grounding material to be tested, etc., and can receive the corrosion result data obtained by the electrochemical workstation 102 performing soil corrosion tests on the grounding materials to be tested in each chamber 104, and process and analyze the corrosion result data. Finally, the parameter conditions of the soil corrosion test of the grounding materials to be tested corresponding to each chamber 104 and the obtained corrosion results are displayed.

[0064] This embodiment provides an achievable implementation method 1, in which the grounding material soil corrosion test system includes two corrosion test boxes 101, and each corrosion test box 101 is separated by an isolation layer 103 to form two chambers 104. Among them, the isolation layer 103 adopts a partition. The top of each chamber 104 is provided with an opening for the wire to pass through. The interior of each chamber 104 of the corrosion test box 101 is filled with soil simulation liquid, and each chamber 104 is provided with a three-electrode system, wherein the counter electrode 106 is a platinum electrode, the reference electrode 107 is an Ag / AgCl electrode, and the working electrode 105 is the grounding material to be tested. The three-electrode system is electrically connected to the electrochemical workstation 102 through a wire. The electrochemical corrosion submodule 210 includes a heating oscillator 211, a humidity regulator 212, a pH regulator 213, a moisture regulator 214, a salt concentration regulator 215 and a harmful ion concentration regulator 216. The electrochemical corrosion submodule 210 can change the physical and chemical parameters of the soil simulation liquid, and achieve the purpose of accelerating the corrosion of the grounding material to be tested by changing the kinetic parameters of the electrochemical corrosion. The current corrosion submodule 220 includes an AC power supply 221 and a DC power supply 222, which can be electrically connected to the grounding material to be tested through a wire to simulate the influence of AC current and / or DC current on the corrosion of the grounding material to be tested. The microbial corrosion submodule 230 includes a microbial cultivation unit 231 and a microbial extraction unit 232. The microbial cultivation unit 231 can inoculate different concentrations of microorganisms into each chamber 104 to simulate microbial corrosion. The microbial extraction unit 232 can also extract the soil simulation liquid in each chamber 104 at a fixed time, complete the microbial count under a microscope, and determine the growth of microorganisms in the test. The oxygen concentration regulator 241 in the battery corrosion submodule 240 can pass different concentrations of oxygen into each chamber 104 by adjusting the ratio of nitrogen and oxygen, thereby carrying out an oxygen concentration difference battery test. The galvanic corrosion unit 242 can test the galvanic corrosion test by connecting different grounding materials in two chambers 104. The data integration submodule 300 can realize the adjustment of relevant parameters and the output of electrochemical test data.

[0065] This embodiment provides an achievable implementation method 2, wherein each chamber 104 of the corrosion test box 101 is filled with sterilized soil, and each chamber 104 is provided with a three-electrode system, wherein the counter electrode 106 is a platinum electrode, the reference electrode 107 is a calomel electrode, and the working electrode 105 is a grounding material to be tested. The remaining conditions are the same as those of implementation method 1 and are not described in detail here.

[0066] This embodiment provides an achievable implementation method 3, in which the isolation layer 103 adopts a semipermeable membrane. A three-electrode system is provided in each of the two chambers 104, wherein the counter electrode 106 is a platinum electrode, the reference electrode 107 is a Cu / CuSO4 electrode, the working electrode 105 is a grounding material to be tested, and the grounding materials to be tested in the two chambers 104 are two different metal materials. During the test, the grounding materials to be tested in the two chambers 104 are connected with a wire, and the connection between the two is disconnected during measurement, and they are respectively connected to the electrochemical workstation 102 to test the electrochemical performance. The remaining conditions are the same as those in implementation method 1 and are not described here.

[0067] Based on the above-mentioned Embodiment 1 and Embodiment 2, it is shown that the grounding material soil corrosion test system provided by the embodiment of the present invention can use soil simulation liquid as the soil environment sample or real sterilized soil as the soil environment sample to test the soil corrosion of the grounding material to be tested. Based on the above-mentioned Embodiment 3 and Embodiment 1, it is shown that when conducting a galvanic corrosion test, a semipermeable membrane needs to be used as the isolation layer 103; and when conducting other tests, a partition can be used as the isolation layer 103.

[0068] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A grounding material soil corrosion test system, characterized in that: include: Corrosion test module and corrosion control module; The corrosion test module includes at least one corrosion test box and an electrochemical workstation, wherein the corrosion test box is filled with a soil environment sample, and a three-electrode system connected to a grounding material to be tested is inserted into the soil environment sample; The corrosion control module is connected to the corrosion test box, and the corrosion control module is used to adjust the soil corrosion parameters of the soil environment sample to form a simulated working environment for the grounding material to be tested; Wherein, the corrosion control module includes an electrochemical corrosion submodule, a current corrosion submodule, a microbial corrosion submodule and a battery corrosion submodule; the soil corrosion parameters include the physical and chemical parameters of the soil environment sample, microbial content parameters, gas concentration parameters and current parameters on the grounding material to be tested; The electrochemical workstation is electrically connected to the corrosion test box and is used to test the corrosion result data of the grounding material to be tested in the simulated working environment.

2. The grounding material soil corrosion test system according to claim 1 is characterized in that: The corrosion test box includes an isolation layer, and the isolation layer is used to isolate the interior of the corrosion test box to form two chambers; The top of each chamber is provided with an opening, and the opening is used to allow the wire connected to the electrochemical workstation to pass through; each chamber is provided with a three-electrode system connected to the grounding material to be tested; Wherein, the working electrode of the three-electrode system includes the grounding material to be tested, and the grounding material to be tested in each of the chambers is different.

3. The grounding material soil corrosion test system according to claim 2, characterized in that: The isolation layer includes a partition and a semipermeable membrane.

4. The grounding material soil corrosion test system according to claim 1, characterized in that: The soil environment sample includes soil simulation liquid and sterilized soil.

5. The grounding material soil corrosion test system according to claim 2, characterized in that: The electrochemical corrosion submodule includes a heating oscillator, a humidity regulator, a pH regulator, a moisture regulator, a salt concentration regulator, and a harmful ion concentration regulator; The heating oscillator, the humidity regulator, the pH regulator, the water regulator, the salt concentration regulator and the harmful ion concentration regulator are all connected to each of the chambers.

6. The grounding material soil corrosion test system according to claim 5, characterized in that: The moisture regulator includes a water tank and a water pump.

7. The grounding material soil corrosion test system according to claim 2, characterized in that: The current corrosion submodule includes an AC power supply and a DC power supply; The AC power supply and the DC power supply are both electrically connected to the grounding material to be tested in each of the chambers.

8. The grounding material soil corrosion test system according to claim 2, characterized in that: The microbial corrosion submodule includes a microbial cultivation unit and a microbial extraction unit; The microorganism cultivation unit and the microorganism extraction unit are both connected to each of the chambers; the microorganism cultivation unit is used to inoculate microorganisms with a preset concentration into the soil environment sample, and the microorganism extraction unit is used to extract the soil environment sample for microorganism content testing.

9. The grounding material soil corrosion test system according to claim 2, characterized in that: The battery corrosion submodule includes an oxygen concentration regulator and a galvanic corrosion unit; The oxygen concentration regulator is used to adjust the oxygen concentration in each of the chambers; the galvanic corrosion unit includes a wire, and the wire is used to connect the grounding materials to be tested in the two chambers.

10. The grounding material soil corrosion test system according to claim 1, characterized in that: Also includes: Data integration submodule; The data integration submodule is electrically connected to the electrochemical workstation, the electrochemical corrosion submodule, the current corrosion submodule, the microbial corrosion submodule and the battery corrosion submodule respectively, and is used to output and display the received soil corrosion parameters and the corrosion result data.

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