Cathode effectiveness testing device and method for simulating corrosion of outer bottom plate of storage tank

Abstract

The invention belongs to an oil and gas field surface engineering corrosion and protection technology, particularly relates to a cathode effectiveness testing device for simulating corrosion of an outer bottom plate of a storage tank, and aims to solve the problems of limited protection range, short service life, low efficiency and limitation in the conventional storage tank cathode protection technology. The test device comprises a storage tank outer bottom plate simplified model and a storage tank outer bottom plate simplified model test device. The cobweb model is composed of a plurality of connected cables, a discus is placed at each cable connection position of the cobweb model, and the part, except the cables and the discus, in the cobweb model is covered with an insulating film; a cathode protection power supply is connected to a discus, and a cathode outlet cable of the cathode protection power supply is connected to a cable of the simplified model of the outer bottom plate of the storage tank, so that the cathode effectiveness test of the simplified model of the outer bottom plate of the storage tank is realized. According to the invention, the data test of the influence degree of the anode spacing, the grounding grid and the waste pipeline on the cathode protection potential and current of the outer bottom plate of the storage tank is realized.

Description

Technical Field

[0001] This invention belongs to the field of corrosion and protection technology for oil and gas field surface engineering, and specifically relates to a cathodic effectiveness testing device and method for simulating corrosion of the outer bottom plate of a storage tank. Background Technology

[0002] Cathodic protection technology for storage tanks is an effective corrosion prevention measure, aiming to prevent or slow down the corrosion reaction between the tank's metal structure and the surrounding environment through electrochemical means. This technology is mainly divided into two categories: sacrificial anode cathodic protection and impressed current cathodic protection. Sacrificial anode cathodic protection uses a material with a lower potential than the protected metal as the anode, forming a galvanic cell with the tank metal, thus making the tank metal the cathode and providing protection. This method is simple, easy to install and maintain, and suitable for environments with low soil resistivity. However, it also has some drawbacks: Limited protection range: The protective current provided by the sacrificial anode is limited, and it may not provide sufficient protection for large tanks or tanks in high resistivity environments. Short lifespan: The sacrificial anode is gradually consumed during use and needs to be replaced periodically, increasing long-term maintenance costs. Low efficiency: In some cases, uneven current distribution between the sacrificial anode and the tank may lead to insufficient protection in some areas. Impressed current cathodic protection, on the other hand, uses an external power source to provide a protective current to the tank's metal structure, making it the cathode and thus preventing corrosion. This method is suitable for large tanks or situations with high soil resistivity. Despite its good protective effect, it also has certain limitations: it cannot test the protection potential and current distribution of the tank bottom plate;

[0003] Therefore, existing cathodic protection technologies for storage tanks have limitations such as limited protection range, short lifespan, and low efficiency. Summary of the Invention

[0004] To address the aforementioned problems in existing technologies, namely the limitations of limited protection range, short lifespan, and low efficiency in existing tank cathodic protection technologies, this invention provides a cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank. The device comprises:

[0005] Simplified model of tank bottom plate and testing equipment for simplified model of tank bottom plate;

[0006] The simplified model of the outer bottom plate of the storage tank includes a spider web model, iron discs, and an insulating film; the spider web model consists of multiple intersecting cables, with an iron disc placed at each cable intersection, and the portion of the spider web model other than the cables and iron discs is covered with an insulating film;

[0007] The simplified model test equipment for the outer bottom plate of the storage tank includes a cathodic protection power supply, anode cable of the cathodic protection power supply, and cathode cable of the cathodic protection power supply.

[0008] The cathode effectiveness test of the simplified model of the tank's outer bottom plate is achieved by connecting the cathodic protection power supply to the iron disc and connecting the cathode output cable of the cathodic protection power supply to the cable of the simplified model of the tank's outer bottom plate.

[0009] In a preferred embodiment, the simplified model of the tank's outer bottom plate specifically includes:

[0010] The iron disc in the simplified model of the tank's outer bottom plate simulates the exposed metal portion of the tank's outer bottom plate where the anti-corrosion layer is damaged; the cable in the simplified model of the tank's outer bottom plate simulates the portion of the tank's outer bottom plate where the anti-corrosion layer is intact; and the insulating film in the simplified model of the tank's outer bottom plate simulates the portion of the tank's outer bottom plate where the insulation is well-covered.

[0011] In a preferred embodiment, the simplified model testing equipment for the outer bottom plate of the storage tank includes:

[0012] Cathodic protection power supply, cathodic protection power supply anode output cable, cathodic protection power supply cathode output cable, first cable for connecting the cathodic protection power supply to the scrap steel pipe, and second cable for connecting the cathodic protection power supply to the hot-dip galvanized grounding electrode.

[0013] In a preferred embodiment, the operating modes of the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of the storage tank include:

[0014] The cathode protection power supply anode output cable of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the anode ground bed at a preset position, and the cathode output cable of the cathode protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the cable of the simplified model of the outer bottom plate of the storage tank; the cathode protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the disc of the cable of the simplified model of the outer bottom plate of the storage tank through a third cable.

[0015] Start the cathodic protection power supply, set the protection potential of the cathodic protection power supply, and after energizing for a period of time, measure the on / off protection potential of the iron disc at each position of the simplified model of the outer bottom plate of the storage tank relative to the anode ground bed at the current position; if the on / off protection potential of the current iron disc is within the preset first interval, then the current iron disc is a well protected area; otherwise, the current iron disc is an underprotected area.

[0016] In a preferred embodiment, the operation mode of the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of the storage tank further includes testing the cathodic effectiveness of the outer bottom plate of the storage tank under the influence of abandoned pipelines, specifically including:

[0017] The first cable of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the waste pipe; the anode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the anode ground bed at a preset position; the cathode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the cable of the simplified model of the outer bottom plate of the storage tank; the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the iron disc of the cable of the simplified model of the outer bottom plate of the storage tank through a third cable;

[0018] Start the cathodic protection power supply, set the protection potential of the cathodic protection power supply, and after energizing for a period of time, measure the on / off protection potential of the iron disc at each position of the simplified model of the outer bottom plate of the storage tank relative to the anode ground bed at the current position; if the on / off protection potential of the current iron disc is within the preset second interval, then the current iron disc is a well protected area; otherwise, the current iron disc is an underprotected area.

[0019] In a preferred embodiment, the operation mode of the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of the storage tank further includes testing the cathodic effectiveness of the outer bottom plate of the storage tank under the influence of the hot-dip galvanized grounding electrode, specifically including:

[0020] The second cable of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the hot-dip galvanized grounding electrode; the anode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the anode ground bed at a preset position; the cathode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the cable of the simplified model of the outer bottom plate of the storage tank; the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the iron disc of the cable of the simplified model of the outer bottom plate of the storage tank through the third cable;

[0021] Start the cathodic protection power supply, set the protection potential of the cathodic protection power supply, and after energizing for a period of time, measure the on / off protection potential of the iron disc at each position of the simplified model of the outer bottom plate of the storage tank relative to the anode ground bed at the current position; if the on / off protection potential of the current iron disc is within the preset third interval, then the current iron disc is a well protected area; otherwise, the current iron disc is an underprotected area.

[0022] In a preferred embodiment, the operating mode of the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of the storage tank further includes: testing the effect of the position of the anode ground bed on the cathodic effectiveness of the simulated corrosion of the outer bottom plate of the storage tank by changing the position of the anode ground bed.

[0023] A second aspect of the present invention provides a cathodic effectiveness testing method for simulating corrosion of the outer bottom plate of a storage tank, based on the aforementioned cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank, the method comprising:

[0024] Connect the anode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank to the anode ground bed at a preset position; connect the cathode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank to the cable of the simplified model of the outer bottom plate of the storage tank; connect the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank to the disc of the cable of the simplified model of the outer bottom plate of the storage tank through a third cable;

[0025] By controlling whether the simplified model test equipment for the tank's outer bottom plate is connected to the scrap pipe, the hot-dip galvanized grounding electrode, and the position of the anode ground bed, the simplified model of the tank's outer bottom plate is divided into different scenarios. Then, the cathodic protection power supply is started, the protection potential of the cathodic protection power supply is set, and after power is applied, the on / off protection potential of the iron disc at each position of the simplified model of the tank's outer bottom plate under the different scenarios is determined. If the on / off protection potential of the current iron disc is within a safe preset range, the current iron disc is determined to be a well-protected area; otherwise, the current iron disc is a poorly protected area.

[0026] A third aspect of the present invention provides an electronic device comprising: at least one processor; and a memory communicatively connected to at least one of the processors; wherein the memory stores instructions executable by the processor for implementing the above-described cathodic effectiveness test method for simulating corrosion of the outer bottom plate of a storage tank.

[0027] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer instructions for execution by the computer to implement the above-described method for testing the cathodic effectiveness of simulating corrosion of the outer bottom plate of a storage tank.

[0028] The beneficial effects of this invention are:

[0029] (1) This application can simulate the corrosion of the outer bottom plate of the storage tank and provides a test method for the protection potential and current distribution of the outer bottom plate of the storage tank;

[0030] (2) This application can realize data testing of the influence of anode spacing, grounding grid and waste pipeline on the cathodic protection potential and current of the outer bottom plate of the storage tank. Based on the test data, the effectiveness of the cathodic protection system of the outer bottom plate of the storage tank can be judged under different conditions.

[0031] (3) This application has good simulation effect, low maintenance cost and high efficiency. Attached Figure Description

[0032] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0033] Figure 1 This is a schematic diagram of a cathode effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of a spider web model according to an embodiment of the present invention;

[0035] Figure 3 This is a detailed diagram of a cathode effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank, according to an embodiment of the present invention.

[0036] Figure 4 This is a schematic diagram of the structure of a computer system used to implement the methods, systems, and devices of this application. Detailed Implementation

[0037] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] This invention provides a cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank, the device comprising:

[0040] Simplified model of tank bottom plate and testing equipment for simplified model of tank bottom plate;

[0041] The simplified model of the outer bottom plate of the storage tank includes a spider web model, iron discs, and an insulating film; the spider web model consists of multiple intersecting cables, with an iron disc placed at each cable intersection, and the portion of the spider web model other than the cables and iron discs is covered with an insulating film;

[0042] The simplified model test equipment for the outer bottom plate of the storage tank includes a cathodic protection power supply, anode cable of the cathodic protection power supply, and cathode cable of the cathodic protection power supply.

[0043] The cathode effectiveness test of the simplified model of the tank's outer bottom plate is achieved by connecting the cathodic protection power supply to the iron disc and connecting the cathode output cable of the cathodic protection power supply to the cable of the simplified model of the tank's outer bottom plate.

[0044] To more clearly explain the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank according to the present invention, the following description is in conjunction with... Figure 1 The steps in the embodiments of the present invention will be described in detail below.

[0045] The cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank according to the first embodiment of the present invention is described in detail below:

[0046] Simplified model of tank bottom plate and testing equipment for simplified model of tank bottom plate;

[0047] like Figure 2 As shown, the simplified model of the tank's outer bottom plate includes a spider web model-6, an iron disc-5, and an insulating film-7. The spider web model consists of multiple intersecting cables, with an iron disc placed at each cable intersection. The portion of the spider web model other than the cables and iron discs is covered with an insulating film. Specifically, the simplified corrosion model of the tank's outer bottom plate is arranged in a way that mimics the spatial structure of a spider web in nature. The model includes an iron disc-5 of a certain diameter and thickness representing the exposed metal part of the tank's bottom plate's anti-corrosion layer, and cables-6 representing the good part of the tank's outer bottom plate's anti-corrosion layer. The remaining portions of cables-6 and iron disc-5 are covered with an insulating film-7, and then covered with a certain thickness of soil to simulate the well-insulated portion of the tank's outer bottom plate.

[0048] In this embodiment, the simplified model of the tank's outer bottom plate specifically includes: a discus representing the exposed metal portion of the tank's outer bottom plate due to damage to the anti-corrosion layer; a cable representing the tank's outer bottom plate due to damage to the anti-corrosion layer; and an insulating film representing the tank's outer bottom plate due to damage to the insulation layer.

[0049] In this embodiment, the simplified model testing equipment for the outer bottom plate of the storage tank includes: a cathodic protection power supply, an anode output cable of the cathodic protection power supply, a cathode output cable of the cathodic protection power supply, a first cable for connecting the cathodic protection power supply to the scrap steel pipe, and a second cable for connecting the cathodic protection power supply to the hot-dip galvanized grounding body.

[0050] The cathode effectiveness test of the simplified model of the tank's outer bottom plate is achieved by connecting the cathodic protection power supply to the iron disc and connecting the cathode output cable of the cathodic protection power supply to the cable of the simplified model of the tank's outer bottom plate.

[0051] In this embodiment, the operating mode of the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank includes: the anode output cable of the cathodic protection power supply of the simplified model testing equipment for the outer bottom plate of the storage tank is connected to the anode ground bed at a preset position; the cathode output cable of the cathodic protection power supply of the simplified model testing equipment for the outer bottom plate of the storage tank is connected to the cable of the simplified model of the outer bottom plate of the storage tank; the cathodic protection power supply of the simplified model testing equipment for the outer bottom plate of the storage tank is connected to the iron disc of the cable of the simplified model of the outer bottom plate of the storage tank through a third cable; the cathodic protection power supply is started, the protection potential of the cathodic protection power supply is set, and after being powered on for a period of time, the on / off protection potential of the iron disc at each position of the simplified model of the outer bottom plate of the storage tank relative to the anode ground bed at the current position is measured; if the on / off protection potential of the current iron disc is within a preset first interval, then the current iron disc is a well protected area; otherwise, the current iron disc is an underprotected area.

[0052] In this embodiment, the operation mode of the cathodic effectiveness testing device for simulating corrosion of the tank's outer bottom plate also includes testing the cathodic effectiveness of the tank's outer bottom plate under the influence of a scrapped pipeline. Specifically, this includes: connecting the first cable of the simplified model testing device for the tank's outer bottom plate to the scrapped pipeline; connecting the anode output cable of the cathodic protection power supply of the simplified model testing device for the tank's outer bottom plate to an anode ground bed at a preset position; connecting the cathode output cable of the cathodic protection power supply of the simplified model testing device for the tank's outer bottom plate to the cable of the simplified model for the tank's outer bottom plate; connecting the cathodic protection power supply of the simplified model testing device for the tank's outer bottom plate to the iron disc of the cable of the simplified model for the tank's outer bottom plate via a third cable; starting the cathodic protection power supply, setting the protection potential of the cathodic protection power supply, and after energizing for a period of time, measuring the on / off protection potential of the iron disc at each position of the simplified model for the tank's outer bottom plate relative to the anode ground bed at the current position; if the on / off protection potential of the current iron disc is within a preset second interval, then the current iron disc is a well-protected area; otherwise, the current iron disc is an under-protected area.

[0053] In this embodiment, the operation mode of the cathodic effectiveness testing device for simulating corrosion of the tank bottom plate also includes testing the cathodic effectiveness of the tank bottom plate under the influence of the hot-dip galvanized grounding electrode. Specifically, this includes: connecting the second cable of the simplified model testing equipment for the tank bottom plate to the hot-dip galvanized grounding electrode; connecting the anode output cable of the cathodic protection power supply of the simplified model testing equipment for the tank bottom plate to the anode ground bed at a preset position; connecting the cathode output cable of the cathodic protection power supply of the simplified model testing equipment for the tank bottom plate to the cable of the simplified model for the tank bottom plate; connecting the cathodic protection power supply of the simplified model testing equipment for the tank bottom plate to the iron disc of the cable of the simplified model for the tank bottom plate through a third cable; starting the cathodic protection power supply, setting the protection potential of the cathodic protection power supply, and after energizing for a period of time, measuring the on / off protection potential of the iron disc at each position of the simplified model for the tank bottom plate relative to the anode ground bed at the current position; if the on / off protection potential of the current iron disc is within a preset third interval, then the current iron disc is a well-protected area; otherwise, the current iron disc is an under-protected area.

[0054] In this embodiment, the operation mode of the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of the storage tank also includes: the influence of the position of the anode ground bed on the cathodic effectiveness of the simulated corrosion of the outer bottom plate of the storage tank can be tested by changing the position of the anode ground bed.

[0055] like Figure 3 As shown, this invention provides a cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank. The device includes a cathodic protection power supply-1, a cathode output cable-2, an anode ground bed-3 connected to the cathode output cable-2, a cathode output cable-4, a cable-6 representing a simplified model of the outer bottom plate of the storage tank connected to the cathode output cable-4, an iron disc-5, an insulating film-7, a cable-8 connecting the cathodic protection power supply-1 and the iron disc-5, a scrap steel pipe-11, a hot-dip galvanized grounding electrode-12, a first cable-10 connecting the cathodic protection power supply-1 and the scrap steel pipe-11, and a second cable-9 connecting the cathodic protection power supply-1 and the hot-dip galvanized grounding electrode-12.

[0056] In this embodiment, the first interval, the second interval, the third interval, etc., are all set in accordance with the requirements of the cathodic protection criteria.

[0057] This invention also provides a specific example of a cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank, the example including:

[0058] Determine the specifications of the target storage tank, such as a bottom plate diameter of 100 meters;

[0059] Simplified model of corrosion on the outer bottom plate of the storage tank: Select a suitable test site, such as 200 meters wide and 400 meters long, and determine the location of the simulated storage tank, such as southeast.

[0060] like Figure 3 A 50-meter-long cable is laid out from the center of the simulated tank site in multiple directions, including east, west, south, north, northeast, northwest, southwest, and southeast. The cable is also laid out in a ring at certain intervals (e.g., 2 meters) from the center of the simulated tank site. The ring cable is then cut at the intersection with the cable in the radial direction, and multiple iron discs buried in the soil are connected (welded or bolted) at each intersection.

[0061] like Figure 3 For example, a cathodic protection power supply-1 is installed on the west side of the site; an anode ground bed-3 is buried on the southwest side. Multiple independent anode ground beds can be pre-buried, and the distance between each group and the edge of the simplified model of the simulated tank is recommended to be 30 meters, 60 meters, 90 meters, 120 meters, 150 meters, 180 meters, 210 meters, etc.; the anode output cable-2 of the cathodic protection power supply-1 is connected to the first anode ground bed-3 (e.g., at a distance of 30 meters from the simplified model of the tank); the cathode output cable-4 of the cathodic protection power supply-1 is connected to the edge cable-6 of the simulated tank (e.g., connected to the east, west, south, or north, or connected together with the cables in the four directions).

[0062] like Figure 3 For example, a waste pipe-11 with a diameter of 100 mm and a length of 30 m can be installed on the north side of the site; the waste pipe-11 is connected to the output terminal of the cathodic protection power supply switch-1 through cable-10.

[0063] like Figure 3 For example, the hot-dip galvanized grounding electrode-12 on the north side of the site can be 50×50×1500mm angle steel, and the quantity can be 30 pieces; each grounding electrode is connected in series through cable-9 and then connected to the No. 2 outgoing terminal of switch in the cathodic protection power supply-1 cabinet.

[0064] like Figure 3 A simplified corrosion model of a storage tank shows an iron disc-5 at a certain edge position connected to the common switch section inside the cabinet of the cathodic protection power supply-1 via cable-8.

[0065] Check that all wiring connections are secure:

[0066] Keep the switch connecting the disc-5 inside the cathodic protection power supply in the off state; disconnect terminals 1 and 2.

[0067] Start the cathodic protection power supply-1 and set the protection potential to -1.2V. After energizing for a period of time, measure and record the on / off protection potential of the iron disc-5 at each position from the edge to the center of the simplified tank model under the corresponding state of the anode ground bed-3 (located 30 meters away from the simplified tank model).

[0068] Shut down the cathodic protection power supply-1, and adjust the wiring of the anode ground bed-3 to the second group, 60 meters away from the simplified model of the storage tank;

[0069] Start the cathodic protection power supply-1 and set the protection potential to -1.2V; after energizing for a period of time, measure and record the on / off protection potential of the iron disc-5 at each position from the edge to the center of the simplified tank model under the corresponding state of the anode ground bed-3 (located 60 meters away from the simplified tank model);

[0070] Repeat steps (11) to (12) to complete the protection potential records of the outer bottom plate of the tank at different positions of the anode distance from the simplified model of the tank, and draw them into a set of figures;

[0071] Turn off the cathodic protection power supply and turn on the No. 1 outgoing switch connected to the iron disc-5 in the cathodic protection power supply to connect the scrap steel pipe-11 to the iron disc-5, simulating the interference of the cathodic protection of the bottom plate of the storage tank when the pipeline and the storage tank are not insulated.

[0072] Repeat steps (10) to (12) to complete the recording of the on / off protection potential data of the outer bottom plate of the tank when the anode is at different positions of the simplified model of the tank under the condition that the waste steel pipe-11 is connected to the tank simplified model iron disc-5, and draw it into a set of figures;

[0073] Shut down the cathodic protection power supply, turn on the No. 2 outgoing switch connected to the iron disc-5 in the cathodic protection power supply, so that the hot-dip galvanized grounding body-12 is connected to the iron disc-5, and simulate the interference of the cathodic protection of the bottom plate of the storage tank when the grounding system in the station is not insulated from the storage tank.

[0074] Repeat steps (10) to (12) to complete the recording of the on / off protection potential data of the outer bottom plate of the tank when the anode is at different positions of the simplified model of the tank under the condition that the hot-dip galvanized grounding body-12 is connected to the tank simplified model iron disc-5, and draw it into a set of figures;

[0075] According to the cathodic protection criteria: the power failure protection potential should not be positive -0.85V or negative -1.2V. On the diagram, underprotected areas (power failure protection potential positive -0.85V) should be marked in red; well-protected areas (power failure protection potential negative -0.85V or positive -1.2V) should be marked in black; and overprotected areas (power failure protection potential negative -1.2V) should be marked in blue.

[0076] (19) End the test and shut down the cathode protection power supply.

[0077] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process and related explanations of the methods described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0078] It should be noted that the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank provided in the above embodiments is only an example of the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be further decomposed or combined. For example, the modules in the above embodiments can be merged into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the various modules or steps and are not considered as an improper limitation of the present invention.

[0079] The cathodic effectiveness test method for simulating corrosion of the outer bottom plate of a storage tank according to the second embodiment of the present invention includes:

[0080] The anode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the anode ground bed at a preset position; the cathode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the cable of the simplified model for the outer bottom plate of the storage tank; the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the iron disc of the cable of the simplified model for the outer bottom plate of the storage tank through a third cable; by controlling whether the simplified model test equipment for the outer bottom plate of the storage tank is connected to the waste pipe, whether it is connected to the hot-dip galvanized grounding body, and the position of the anode ground bed, the simplified model for the outer bottom plate of the storage tank is divided into different scenarios; then the cathodic protection power supply is started, the protection potential of the cathodic protection power supply is set, and after power is applied, the on / off protection potential of the iron disc at each position of the simplified model for the outer bottom plate of the storage tank under different scenarios is determined; if the on / off protection potential of the current iron disc is within a safe preset range, the current iron disc is determined to be a well protected area, otherwise the current iron disc is an underprotected area.

[0081] Although the steps in the above embodiments are described in the above order, those skilled in the art will understand that in order to achieve the effect of this embodiment, different steps do not need to be executed in such an order. They can be executed simultaneously (in parallel) or in a reverse order. These simple variations are all within the protection scope of this invention.

[0082] An electronic device according to a third embodiment of the present invention includes: at least one processor; and a memory communicatively connected to at least one of the processors; wherein the memory stores instructions executable by the processor, the instructions being executed by the processor to implement the above-described cathodic effectiveness test method for simulating corrosion of the outer bottom plate of a storage tank.

[0083] A fourth embodiment of the present invention provides a computer-readable storage medium storing computer instructions, which are executed by the computer to implement the above-described method for testing the cathodic effectiveness of simulating corrosion of the outer bottom plate of a storage tank.

[0084] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process and related descriptions of the electronic devices and storage media described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0085] Those skilled in the art will recognize that the modules and method steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. The programs corresponding to the software modules and method steps can be placed in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art. To clearly illustrate the interchangeability of electronic hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the invention.

[0086] The following is for reference. Figure 4 It shows a schematic diagram of the structure of a computer system for implementing the methods, systems, and devices of this application. Figure 4 The server shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0087] like Figure 4 As shown, the computer system includes a Central Processing Unit (CPU) 601, which can perform various appropriate actions and processes based on programs stored in Read Only Memory (ROM) 602 or programs loaded from storage section 608 into Random Access Memory (RAM) 603. The RAM 603 also stores various programs and data required for system operation. The CPU 601, ROM 602, and RAM 603 are interconnected via a bus 604. An Input / Output (I / O) interface 605 is also connected to the bus 604.

[0088] The following components are connected to I / O interface 605: an input section 606 including a keyboard, mouse, etc.; an output section 607 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to I / O interface 605 as needed. A removable medium 611, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 610 as needed so that computer programs read from it can be installed into storage section 608 as needed.

[0089] Specifically, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 609, and / or installed from removable medium 611. When the computer program is executed by central processing unit (CPU) 601, it performs the functions defined in the methods of this application. It should be noted that the computer-readable medium described above in this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in connection with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on a computer-readable medium can be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0090] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0091] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0092] The terms “first”, “second”, etc., are used to distinguish similar objects, not to describe or indicate a specific order or sequence.

[0093] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0094] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank, characterized in that, The device includes: Simplified model of tank bottom plate and testing equipment for simplified model of tank bottom plate; The simplified model of the outer bottom plate of the storage tank includes a spider web model, iron discs, and an insulating film; the spider web model consists of multiple intersecting cables, with an iron disc placed at each cable intersection, and the portion of the spider web model other than the cables and iron discs is covered with an insulating film; The simplified model test equipment for the outer bottom plate of the storage tank includes a cathodic protection power supply, anode cable of the cathodic protection power supply, and cathode cable of the cathodic protection power supply. The cathode effectiveness test of the simplified model of the tank's outer bottom plate is achieved by connecting the cathodic protection power supply to the iron disc and connecting the cathode output cable of the cathodic protection power supply to the cable of the simplified model of the tank's outer bottom plate.

2. The cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank according to claim 1, characterized in that, The simplified model of the outer bottom plate of the storage tank specifically includes: The iron disc in the simplified model of the tank's outer bottom plate simulates the exposed metal portion of the tank's outer bottom plate where the anti-corrosion layer is damaged; the cable in the simplified model of the tank's outer bottom plate simulates the portion of the tank's outer bottom plate where the anti-corrosion layer is intact; and the insulating film in the simplified model of the tank's outer bottom plate simulates the portion of the tank's outer bottom plate where the insulation is well-covered.

3. The cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank according to claim 2, characterized in that, The simplified model testing equipment for the outer bottom plate of the storage tank also includes: The first cable is used to connect the cathodic protection power supply to the scrap steel pipe, and the second cable is used to connect the cathodic protection power supply to the hot-dip galvanized grounding electrode.

4. The cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank according to claim 3, characterized in that, The operating modes of the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of the storage tank include: The cathode protection power supply anode output cable of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the anode ground bed at a preset position, and the cathode output cable of the cathode protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the cable of the simplified model of the outer bottom plate of the storage tank; the cathode protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the disc of the cable of the simplified model of the outer bottom plate of the storage tank through a third cable. Start the cathodic protection power supply, set the protection potential of the cathodic protection power supply, and after energizing for a period of time, measure the on / off protection potential of the iron disc at each position of the simplified model of the outer bottom plate of the storage tank relative to the anode ground bed at the current position; if the on / off protection potential of the current iron disc is within the preset first interval, then the current iron disc is a well protected area; otherwise, the current iron disc is an underprotected area.

5. The cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank according to claim 4, characterized in that, The operation mode of the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of the storage tank also includes testing the cathodic effectiveness of the outer bottom plate of the storage tank under the influence of abandoned pipelines, specifically including: The first cable of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the waste pipe; the anode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the anode ground bed at a preset position; the cathode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the cable of the simplified model of the outer bottom plate of the storage tank; the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the iron disc of the cable of the simplified model of the outer bottom plate of the storage tank through a third cable; Start the cathodic protection power supply, set the protection potential of the cathodic protection power supply, and after energizing for a period of time, measure the on / off protection potential of the iron disc at each position of the simplified model of the outer bottom plate of the storage tank relative to the anode ground bed at the current position; if the on / off protection potential of the current iron disc is within the preset second interval, then the current iron disc is a well protected area; otherwise, the current iron disc is an underprotected area.

6. The cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank according to claim 5, characterized in that, The operation mode of the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of the storage tank also includes testing the cathodic effectiveness of the outer bottom plate of the storage tank under the influence of the hot-dip galvanized grounding electrode, specifically including: The second cable of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the hot-dip galvanized grounding electrode; the anode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the anode ground bed at a preset position; the cathode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the cable of the simplified model of the outer bottom plate of the storage tank; the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank is connected to the iron disc of the cable of the simplified model of the outer bottom plate of the storage tank through the third cable; Start the cathodic protection power supply, set the protection potential of the cathodic protection power supply, and after energizing for a period of time, measure the on / off protection potential of the iron disc at each position of the simplified model of the outer bottom plate of the storage tank relative to the anode ground bed at the current position; if the on / off protection potential of the current iron disc is within the preset third interval, then the current iron disc is a well protected area; otherwise, the current iron disc is an underprotected area.

7. The cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of a storage tank according to claim 6, characterized in that, The operation mode of the cathodic effectiveness testing device for simulating corrosion of the outer bottom plate of the storage tank also includes: the effect of the position of the anode ground bed on the cathodic effectiveness of the simulated corrosion of the outer bottom plate of the storage tank can be tested by changing the position of the anode ground bed.

8. A cathodic effectiveness test method for simulating corrosion of the outer bottom plate of a storage tank, characterized in that, Based on the cathodic effectiveness testing apparatus for simulating corrosion of the outer bottom plate of a storage tank according to any one of claims 1-7, the method includes: Connect the anode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank to the anode ground bed at a preset position; connect the cathode output cable of the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank to the cable of the simplified model of the outer bottom plate of the storage tank; connect the cathodic protection power supply of the simplified model test equipment for the outer bottom plate of the storage tank to the disc of the cable of the simplified model of the outer bottom plate of the storage tank through a third cable; By controlling whether the simplified model test equipment for the tank's outer bottom plate is connected to the scrap pipe, the hot-dip galvanized grounding electrode, and the position of the anode ground bed, the simplified model of the tank's outer bottom plate is divided into different scenarios. Then, the cathodic protection power supply is started, the protection potential of the cathodic protection power supply is set, and after power is applied, the on / off protection potential of the iron disc at each position of the simplified model of the tank's outer bottom plate under the different scenarios is determined. If the on / off protection potential of the current iron disc is within a safe preset range, the current iron disc is determined to be a well-protected area; otherwise, the current iron disc is a poorly protected area.

9. An electronic device, characterized in that, include: At least one processor; as well as A memory communicatively connected to at least one of the processors; wherein, The memory stores instructions that can be executed by the processor to implement the cathodic effectiveness test method for simulating corrosion of the outer bottom plate of a storage tank as described in any one of claims 1-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that are executed by the computer to implement the cathodic effectiveness test method for simulating corrosion of the outer bottom plate of a storage tank as described in any one of claims 1-8.

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