A gas pipeline corrosion prevention method, system, electronic device and storage medium

Abstract

The application discloses a gas pipeline corrosion prevention method and system, an electronic device and a storage medium. The gas pipeline corrosion prevention method comprises the following steps: acquiring potential data of detection positions on a gas pipeline, wherein a plurality of detection positions are distributed along the extension direction of the gas pipeline; determining the potential gradient value of two detection positions based on the potential data of the two detection positions and the interval distance between the two detection positions; comparing the potential gradient value of the detection positions with a preset gradient threshold value to obtain the difference value between the potential gradient value of the detection positions and the gradient threshold value; determining the corrosion grade of the detection positions according to the difference value, and conveying a corresponding number of corrosion prevention units to the detection positions based on the corrosion grade, wherein the corrosion prevention units are active metals. Through the above method, the efficiency of gas pipeline corrosion detection is improved, and missed detection is avoided, and dynamic protection for local corrosion areas is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of gas pipeline corrosion protection, and particularly relates to a gas pipeline corrosion protection method and system, an electronic device and a storage medium. BACKGROUND

[0002] With the growth of natural gas demand, as an important infrastructure for conveying medium, the demand for the number and quality of gas pipelines is also increasing. The gas pipeline is buried in the soil for a long time, and the water in the soil and the chemical substances in the soil can cause corrosion to the gas pipeline. The corrosion usually occurs locally in the gas pipeline. If the corrosion position of the gas pipeline is detected by artificial periodic detection, the detection efficiency is low, and the missed detection may occur. The cathodic protection used for pipeline corrosion protection is to use an external power source or a sacrificial anode to make the protected gas pipeline no longer lose electrons, so as to keep the gas pipeline below the corrosion potential, slow down or stop the corrosion process. Since the sacrificial anode is fixedly installed on the gas pipeline, it cannot dynamically protect the local corrosion area. SUMMARY

[0003] In order to solve the problems in the prior art, the present application provides a gas pipeline corrosion protection method, system and electronic device, which can improve the detection efficiency of the corrosion position, avoid missed detection, and also realize dynamic protection of the local corrosion position.

[0004] To achieve the above object, the present application adopts the following technical solutions:

[0005] The present application provides a gas pipeline corrosion protection method, which comprises:

[0006] obtaining potential data of detection positions on the gas pipeline, the plurality of detection positions being distributed along the extension direction of the gas pipeline;

[0007] determining a potential gradient value of one of the detection positions based on the potential data of the two detection positions and the interval distance between the two detection positions;

[0008] comparing the potential gradient value of the detection position with a preset gradient threshold value to obtain a difference value between the potential gradient value of the detection position and the gradient threshold value;

[0009] determining a corrosion grade of the detection position according to the difference value, and delivering a corresponding number of corrosion protection units to the detection position based on the corrosion grade, the corrosion protection units being active metals.

[0010] In some embodiments, the determination of the potential gradient value of one of the detection positions based on the potential data of the two detection positions and the interval distance between the two detection positions comprises:

[0011] obtaining a potential difference between the potential data of one detection position and the potential data of another detection position;

[0012] determining a potential gradient value according to a ratio of the potential difference to the interval distance, the potential gradient value satisfying the following relationship:

[0013] Δ ϕ =ΔV / L;

[0014] In the formula, Δ ϕ represents the potential gradient value; ΔV represents the potential difference; and L represents the interval distance.

[0015] In some embodiments, the gas pipeline corrosion prevention method further comprises:

[0016] determining two detection positions with a potential gradient value greater than a gradient threshold value, and marking them as target positions, and there is at least one detection position between the two target positions, and marking it as a to-be-detected position, the potential gradient value of the to-be-detected position being substantially the same as the potential gradient value of the target position;

[0017] delivering a corresponding number of corrosion prevention units to the two target positions based on the corrosion levels of the two target positions respectively;

[0018] re-inspecting the potential data of the to-be-detected position to obtain the potential gradient value of the to-be-detected position, and determining the corrosion level of the to-be-detected position;

[0019] delivering a corresponding number of corrosion prevention units based on the corrosion level of the to-be-detected position.

[0020] In some embodiments, determining the corrosion level of the detection position according to the difference value and delivering a corresponding number of corrosion prevention units to the detection position based on the corrosion level comprises:

[0021] selecting a corresponding number of corrosion prevention units based on a set difference value range;

[0022] if the difference value is within a first difference value range, delivering a first number of corrosion prevention units to the detection position;

[0023] if the difference value is within a second difference value range, delivering a second number of corrosion prevention units to the detection position; the first difference value range is smaller than the second difference value range, and the first number is smaller than the second number.

[0024] In some embodiments, the detection position where corrosion will occur is marked as a target position, and the gas pipeline corrosion prevention method further comprises:

[0025] when the corrosion prevention unit is delivered to the target position, obtaining an initial gradient value and a current gradient value of the target position; the initial gradient value is the potential gradient value of the target position when no corrosion prevention unit is configured, and the current gradient value is the potential gradient value of the target position at the current time;

[0026] determine a potential gradient change rate of the target position based on the initial gradient value and the current gradient value;

[0027] determine a recovery time required for the potential gradient of the target position to drop to the gradient threshold value, the recovery time, the current gradient value and the potential recovery rate satisfying the following relationship:

[0028] T = (G1-G2) / (AG / At);

[0029] In the formula, T represents the recovery time, G1 represents the current gradient value, G2 represents the gradient threshold value, AG represents the potential gradient change amount, and At represents the time interval from when the anti-corrosion unit is transported to the target position to the current time.

[0030] If the recovery time is less than a preset time threshold value, the anti-corrosion of the target position is completed.

[0031] In some embodiments, the gas pipeline anti-corrosion method further includes increasing the number of anti-corrosion units transported to the target position if the recovery time is not less than the time threshold value; or re-determining the corrosion grade of the target position according to the difference between the initial gradient value and the gradient threshold value of the target position.

[0032] In a second aspect, the present application also provides a gas pipeline anti-corrosion system connected to a gas pipeline, the gas pipeline anti-corrosion system comprising a detection unit, a data processing unit and a transportation unit. The detection unit is used to obtain potential data of detection positions on the gas pipeline, and a plurality of detection positions are distributed along the extension direction of the gas pipeline. The data processing unit is used to determine the potential gradient value of two detection positions based on the potential data of the two detection positions respectively and the interval distance between the two detection positions; compare the potential gradient value with a preset gradient threshold value and obtain the difference between the potential gradient value and the gradient threshold value; determine the corrosion grade of the detection position according to the difference; and the transportation unit is used to receive a control signal representing the corrosion grade and transport a corresponding number of anti-corrosion units to the detection position according to the control signal, the anti-corrosion unit being an active metal.

[0033] In some embodiments, the transportation unit comprises a guide rail arranged on the outer surface of the gas pipeline, the extension direction of the guide rail being consistent with the extension direction of the gas pipeline, and the guide rail is connected with a displacement table capable of sliding relative to the guide rail, the displacement table being used to fix the anti-corrosion unit, and when the displacement table moves to the detection position, the displacement table can release the anti-corrosion unit so that the anti-corrosion unit is connected with the detection position.

[0034] In a third aspect, the present application also provides an electronic device comprising a memory and a processor, the memory storing program instructions; and the processor implements the steps of the above-mentioned gas pipeline anti-corrosion method when executing the program instructions stored in the memory.

[0035] In a fourth aspect, the present application further provides a computer readable storage medium, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the gas pipeline corrosion prevention method.

[0036] The gas pipeline corrosion prevention method can improve the corrosion detection efficiency of the gas pipeline, avoid missed detection, and realize dynamic protection for the local corrosion area by detecting the potential data of each detection position of the gas pipeline in real time, calculating the potential gradient value according to each potential data to determine whether the detection position of the gas pipeline is corroded, and delivering different numbers of corrosion prevention units to the corroded detection position according to different corrosion grades. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 The first execution step of the gas pipeline corrosion prevention method in the embodiment of the present application is as follows:

[0038] Figure 2 The second execution step of the gas pipeline corrosion prevention method in the embodiment of the present application is as follows:

[0039] Figure 3 The schematic diagram of the gas pipeline corrosion prevention system in the embodiment of the present application is as follows:

[0040] Figure 4 The schematic diagram of the electronic device in the embodiment of the present application is as follows. DETAILED DESCRIPTION

[0041] In order to enable personnel in the art to better understand the scheme of the present application, the technical scheme in the specific embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application.

[0042] It should be noted that the "first", "second" and similar words used in the specification and claims of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "a" and similar words do not represent a quantity limit, but represent the existence of at least one. "Multiple" or "several" represents at least two. "Include" or "contain" and similar words mean that the elements or objects appearing before "include" or "contain" cover the elements or objects listed after "include" or "contain" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect.

[0043] As shown in Figure 1 The present application provides a gas pipeline corrosion prevention method, which comprises the following steps:

[0044] S101: Obtain potential data of detection positions on the gas pipeline, and multiple detection positions are distributed along an extension direction of the gas pipeline.

[0045] Specifically, the potential data of the detection positions includes a potential of the detection position, i.e., a potential energy of the detection position relative to the same reference point. The reference point can be a copper sulfate reference electrode, which can provide a stable potential reference value.

[0046] In some embodiments, the detection positions are arranged in sequence along the extension direction of the gas pipeline at a preset first distance.

[0047] In other embodiments, the detection positions located in the corrosion-prone areas of the gas pipeline, such as elbows, welds, flange interfaces, and other pipeline connection and construction weak points, are arranged in sequence along the extension direction of the gas pipeline at a preset second distance, and the second distance is smaller than the first distance, so that the interval distance between the detection positions located in the corrosion-prone areas of the gas pipeline is shorter, and the accuracy of detection of the corrosion-prone areas is improved.

[0048] S102: Determine a potential gradient value of the detection position based on the potential data of each of the two detection positions and the interval distance between the two detection positions.

[0049] In some embodiments, a potential difference between the potential data of one detection position and the potential data of another detection position is obtained, and the potential gradient value is determined according to a ratio of the potential difference to the interval distance, and the potential gradient value satisfies the following relationship:

[0050] Δ ϕ =ΔV / L;

[0051] In the formula, Δ ϕ represents the potential gradient value; ΔV represents the potential difference; and L represents the interval distance, wherein the potential difference ΔV is a difference between the potentials of the two detection positions.

[0052] For example, if the potential of the detection position A is -0.9V, the potential of the detection position B is -0.85V, and the interval distance between the detection position A and the detection position B is 5m, then the potential gradient value Δ ϕ = (-0.85-(-0.9)) / 5 = 0.01V / m = 10mV / m.

[0053] It should be noted that the two detection positions can be adjacent or at least one detection position apart. If the two detection positions are at least one detection position apart, the interval distance between the two detection positions should not exceed the preset interval distance, so as to avoid that the potential gradient value is too small due to the too long interval distance.

[0054] S103: Compare the potential gradient value of the detection position with the preset gradient threshold value to obtain a difference value between the potential gradient value of the detection position and the gradient threshold value.

[0055] For example, if the potential gradient value is 20 mV / m, the preset gradient threshold value is 10 mV / m, and the difference value between the potential gradient value and the gradient threshold value is 10 mV / m.

[0056] It should be noted that the preset gradient threshold value can be changed according to requirements, for example, in an area with low soil resistivity, the preset gradient threshold value is correspondingly low, and in an area with high soil resistivity, the preset gradient threshold value is correspondingly high.

[0057] S104: Determine the corrosion grade of the detection position according to the difference value, and deliver a corresponding number of anti-corrosion units to the detection position based on the corrosion grade, the anti-corrosion unit being an active metal.

[0058] The anti-corrosion unit acts as a sacrificial anode, the gas pipeline acts as a cathode, the sacrificial anode and the cathode form a primary cell, the sacrificial anode acts as the negative electrode of the primary cell, and the oxidation reaction of losing electrons occurs preferentially, gradually corroding and consuming, the cathode acts as the positive electrode of the primary cell, and the surface undergoes a reduction reaction, inhibiting its own corrosion and being protected.

[0059] It should be noted that different metals or metal alloys are selected for the anti-corrosion unit according to different soil environmental conditions, and the anti-corrosion unit can be any of magnesium, aluminum, zinc or an alloy with any of these elements as the main element. The soil environmental conditions include but are not limited to the soil resistivity, the soil pH, and the soil humidity.

[0060] For example, different anti-corrosion units are selected according to the soil resistivity, if the soil resistivity is greater than 50 Ω·m, the soil is high resistivity soil, and magnesium alloy is selected as the sacrificial anode (such as Mg-Mn alloy).

[0061] If the soil resistivity is between 20 Ω·m and 50 Ω·m, aluminum alloy is selected as the sacrificial anode (such as Al-Zn-In alloy).

[0062] If the soil resistivity is less than 20 Ω·m, zinc alloy is selected as the sacrificial anode (such as Zn-Al alloy).

[0063] In some embodiments, the corrosion grade is divided into mild corrosion, moderate corrosion, and severe corrosion.

[0064] For example, if the preset gradient threshold value is 10 mV / m, the corrosion degree when the potential gradient value is less than or equal to 10 mV / m is divided into mild corrosion, and no anti-corrosion unit is delivered under mild corrosion.

[0065] The corrosion degree when the potential gradient value is greater than 10 mV / m and less than or equal to 20 mV / m is classified as moderate corrosion, and the number of anti-corrosion units conveyed to the detection position under moderate corrosion is 1-2.

[0066] The corrosion degree when the potential gradient value is greater than 20 mV / m is classified as severe corrosion, and the number of anti-corrosion units conveyed to the detection position under severe corrosion is 3-5.

[0067] In other embodiments, the gas pipeline for mild corrosion mainly adopts preventive deployment, that is, the gas pipeline not affected by corrosion is also prevented by conveying one anti-corrosion unit.

[0068] In some embodiments, when the corrosion level of the detection position is determined according to the difference value, and a corresponding number of anti-corrosion units is conveyed to the detection position based on the corrosion level, the corresponding number of anti-corrosion units needs to be selected based on the set difference value range first. If the difference value is within the first difference value range, a first number of anti-corrosion units is conveyed to the detection position; if the difference value is within the second difference value range, a second number of anti-corrosion units is conveyed to the detection position, wherein the first difference value range is smaller than the second difference value range, and the first number is smaller than the second number.

[0069] It should be noted that the first difference value range is smaller than the second difference value range means that any value in the first difference value range is not greater than any value in the second difference value range.

[0070] Exemplarily, the first difference value range is 0 mV / m to 10 mV / m, the second difference value range is greater than 10 mV / m, the first number is 1-2, and the second number is 3-5.

[0071] If the difference between the potential gradient value and the gradient threshold value is 5 mV / m, the difference is within the first difference value range, and one anti-corrosion unit is conveyed to the detection position.

[0072] If the difference between the potential gradient value and the gradient threshold value is 15 mV / m, the difference is within the second difference value range, and four anti-corrosion units are conveyed to the detection position.

[0073] Through the above method, the potential data of each detection position of the gas pipeline can be detected in real time, the potential gradient value is calculated according to each potential data to determine whether the detection position of the gas pipeline is corroded, and different numbers of anti-corrosion units are conveyed to the corroded detection position according to different corrosion levels, which improves the efficiency of the corrosion detection of the gas pipeline and avoids missing detection, and realizes dynamic protection for the local corrosion area.

[0074] In some embodiments, the local corrosion of the gas pipeline occurs, the corrosion area covers multiple detection positions, two detection positions with a potential gradient value greater than a gradient threshold value are determined, and the two detection positions are respectively marked as target positions. There is also at least one detection position between the two target positions, and the detection position between the two target positions is marked as a to-be-detected position. The potential gradient value of the to-be-detected position is substantially the same as the potential gradient value of the target position, and the corrosion level of the to-be-detected position cannot be accurately determined by the potential difference. Therefore, based on the respective corrosion levels of the two target positions, a corresponding number of anti-corrosion units are transported to the two target positions. After a preset time, the potential data of the to-be-detected position is rechecked, the potential gradient value of the to-be-detected position is obtained, and the corrosion level of the to-be-detected position is determined. Based on the corrosion level of the to-be-detected position, a corresponding number of anti-corrosion units are transported, and accurate detection and corrosion prevention of the locally corroded gas pipeline are realized. The above-mentioned preset time is based on the time required for the anti-corrosion unit to complete the corrosion prevention of the two target positions.

[0075] As shown in Figure 2 In some possible implementations, the detection position where corrosion occurs is marked as a target position, and the gas pipeline anti-corrosion method further includes the following steps:

[0076] S201: After the anti-corrosion unit is transported to the target position, the initial gradient value and the current gradient value of the target position are obtained.

[0077] It should be noted that the initial gradient value is the potential gradient value of the target position when the anti-corrosion unit is not configured, and the current gradient value is the potential gradient value of the target position at the current time.

[0078] S202: Based on the initial gradient value and the current gradient value, the potential gradient change amount of the target position is determined.

[0079] Wherein, the potential gradient change amount AG is the difference between the initial gradient value and the current gradient value.

[0080] S203: Determine the recovery time required for the potential gradient of the target position to decrease to the gradient threshold value.

[0081] In some embodiments, the recovery time, the potential gradient value at the current time, and the potential recovery rate satisfy the following relationship:

[0082] T = (G1-G2) / (AG / At);

[0083] In the formula, T represents the recovery time, G1 represents the current gradient value, G2 represents the gradient threshold value, AG represents the potential gradient change amount, and At represents the time interval from when the anti-corrosion unit is transported to the target position to the current time. Wherein, (AG / At) represents the change rate of the potential gradient value, that is, the change rate of the initial gradient value to the gradient threshold value per unit time.

[0084] For example, if the current gradient value G1 = 15 mV / m, the gradient safety threshold G2 = 10 mV / m, the time interval Δt = 5 h, and the potential gradient change ΔG = 2 mV / m, then T = (15-10) / (2 / 5) = 12.5 h

[0085] S204: If the recovery time is less than the preset time threshold, the corrosion protection of the target location is completed.

[0086] In some embodiments, if the recovery time is not less than a preset time threshold, it means that the target location cannot complete the anti-corrosion work within the preset time threshold. In this case, the number of anti-corrosion units transported to the target location is increased to enhance the anti-corrosion effect on the target location until the recovery time is less than the preset time threshold.

[0087] In other embodiments, if the recovery time is not less than a preset time threshold, the corrosion level of the target location is re-determined based on the difference between the initial gradient value of the target location and the gradient threshold, and a corresponding number of anti-corrosion units are delivered to the target location again based on the corrosion level to achieve secondary anti-corrosion of the target location until the recovery time is less than the preset time threshold.

[0088] By setting the above, it can be determined whether the target location has been protected against corrosion, and the anti-corrosion effect can be enhanced or secondary anti-corrosion can be carried out for the target location that has not been protected against corrosion, so as to ensure that the target location has been protected against corrosion.

[0089] like Figure 3 As shown, this application also provides a gas pipeline corrosion protection system 100, which is connected to a gas pipeline 200. The gas pipeline corrosion protection system 100 includes a detection unit 11, a data processing unit 12, and a delivery unit 13. The detection unit 11 is used to acquire potential data at detection locations on the gas pipeline 200, with multiple detection locations distributed along the extension direction of the gas pipeline 200. The data processing unit 12 is used to determine the potential gradient value of two detection locations based on the potential data of each of the two detection locations and the interval distance between the two detection locations, compare the potential gradient value with a preset gradient threshold, and obtain the difference between the potential gradient value and the gradient threshold; the data processing unit 12 can determine the corrosion level of the detection location based on the difference. The delivery unit 13 is used to receive a control signal characterizing the corrosion level and deliver a corresponding number of corrosion protection units, which are active metals, to the detection locations according to the control signal.

[0090] It should be noted that the corrosion protection unit can be any metal from magnesium, aluminum, and zinc, or an alloy with any element as the main element. The corrosion protection unit is used as a consumable of the gas pipeline corrosion protection system 100. After being delivered to the detection position, the corrosion protection unit acts as the sacrificial anode, and the gas pipeline 200 acts as the cathode. The sacrificial anode and the cathode form a galvanic cell. The sacrificial anode, as the negative electrode of the galvanic cell, preferentially undergoes an oxidation reaction that loses electrons and is gradually corroded and consumed. The cathode, as the positive electrode of the galvanic cell, undergoes a reduction reaction on its surface, inhibiting its own corrosion and thus being protected.

[0091] In some embodiments, the detection unit 11 may be a plurality of potential sensors distributed at different locations outside the gas pipeline 200. The detection unit 11 can collect potential signals at the detection location in real time and transmit the collected data to the data processing unit 12.

[0092] In some embodiments, the gas pipeline corrosion prevention system 100 further includes a communication unit 14, which is connected to the data processing unit 12 to transmit the potential data collected by the detection unit 11 to the data processing unit 12; the communication unit 14 is also connected to the transmission unit 13, and the communication unit 14 is able to receive control signals representing the corrosion level generated by the data processing unit 12 and send the control signals to the transmission unit 13.

[0093] For example, the communication connection between the communication unit 14 and the transmission unit 13 includes wired communication and wireless communication. The wireless communication includes, but is not limited to, Bluetooth communication, Wi-Fi communication, 4G communication and other connection methods with long transmission distances.

[0094] like Figure 3 As shown, specifically, the conveying unit 13 includes a guide rail 131 disposed on the outer surface of the gas pipeline 200. The extension direction of the guide rail 131 is consistent with the extension direction of the gas pipeline 200. The guide rail 131 is connected to a displacement platform 132 that can slide relative to the guide rail 131. The displacement platform 132 is used to fix the anti-corrosion unit. When the displacement platform 132 moves to the detection position, the displacement platform 132 can release the anti-corrosion unit, so that the anti-corrosion unit is connected to the detection position.

[0095] When the displacement stage 132 releases the anti-corrosion unit, it generates a feedback signal and transmits the feedback signal to the data processing unit 12. The data processing unit 12 records the feedback time of the feedback signal generation and the initial gradient value of the detection position at that feedback time, so as to determine whether the detection position has completed anti-corrosion in subsequent work.

[0096] It should be noted that, since the guide rail 131 and the displacement table 132 are arranged on the outer surface of the gas pipeline 200, the operation of the gas pipeline 200 does not need to be interrupted in the process of installing the guide rail 131 and the displacement table 132 or anti-corrosion treatment of the detection position, which can reduce the installation cost and installation period of the gas pipeline anti-corrosion system 100, and can avoid the danger caused by the electrochemical reaction in the process of the anti-corrosion unit acting.

[0097] Through the above arrangement, the efficiency of the corrosion detection of the gas pipeline 200 is improved, the installation cost and installation period of the gas pipeline anti-corrosion system 100 are reduced, and the danger caused by the electrochemical reaction in the process of the anti-corrosion unit acting is avoided.

[0098] As shown in Figure 4 The present application also provides an electronic device 300, which comprises a memory 31 and a processor 32, the memory 31 stores program instructions, and the processor 32 executes the program instructions stored in the memory 31, so that the gas pipeline anti-corrosion method disclosed in the above examples of the present application is executed.

[0099] Specifically, the above processor can include a central processing unit, or an application specific integrated circuit (ASIC), or can be configured to implement one or more integrated circuits of the embodiments of the present application.

[0100] In some embodiments, the memory 31 can include a mass storage for data or instructions.

[0101] Exemplarily, the memory 31 includes a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disc, a magneto-optical disc, a universal serial bus (USB) drive, or a combination of any of the above memories.

[0102] In some embodiments, the memory 31 is inside or outside the electronic device.

[0103] In some possible implementations, the electronic device 300 further comprises a communication interface 33 and a bus 34. The processor 32, the memory 31, and the communication interface 33 are connected through the bus 34 and complete communication with each other.

[0104] The communication interface 33 is mainly used to realize the communication between the modules, devices, units and / or equipment in the embodiments of the present application.

[0105] Bus 34 includes hardware and / or software that couples components of the device to one another. By way of example, and not limitation, bus 34 can include an accelerated graphics port or other graphics bus, a HyperTransport® bus, industry standard architecture bus, a frontside bus, a low pin count bus, a storage area network fabric, or a serial bus, such as a USB, a Firewire, etc. In some embodiments, bus 34 can be a proprietary bus, e.g., one that is not available to the public.

[0106] The application also provides a computer readable storage medium, which stores a computer program, and the computer program is executed by the processor 32 to realize the steps of the above-mentioned gas pipeline corrosion prevention method.

[0107] The computer readable storage medium includes, but is not limited to, electronic, magnetic, optical, infrared or other physical storage devices or equipment, and can contain or store information such as executable instructions, data, etc. More specific examples of computer readable storage medium include one or more wires, RAM (Random Access Memory), volatile memory, non-volatile memory, flash memory, storage drives (such as hard drives, etc.), SSD (Solid State Disk), any type of storage disk (such as optical disk, etc.), or similar storage, or any suitable combination of the above.

[0108] It should be understood that for those skilled in the art, improvements or changes can be made according to the above description, and all these improvements and changes shall fall within the protection scope of the appended claims of the application.

Claims

1. A method for preventing corrosion of a gas pipeline, the method comprising: obtaining potential data of detection positions on the gas pipeline, the detection positions being distributed along an extension direction of the gas pipeline; determining a potential gradient value of one of the detection positions based on potential data of the two detection positions and a distance between the two detection positions; comparing the potential gradient value of the detection position with a preset gradient threshold to obtain a difference value between the potential gradient value of the detection position and the gradient threshold; determining a corrosion level of the detection position according to the difference value, and delivering a corresponding number of corrosion prevention units to the detection position based on the corrosion level, the corrosion prevention units being active metals; determining two of the detection positions whose potential gradient values are greater than the gradient threshold, and marking the two detection positions as target positions, the two target positions having at least one detection position therebetween, and marking the at least one detection position as a detection position to be detected, the detection position to be detected having a potential gradient value substantially the same as the potential gradient values of the target positions; delivering a corresponding number of the corrosion prevention units to the two target positions based on corrosion levels of the two target positions; rechecking potential data of the detection position to be detected to obtain a potential gradient value of the detection position to be detected, and determining a corrosion level of the detection position to be detected; and delivering a corresponding number of the corrosion prevention units based on the corrosion level of the detection position to be detected. 2.The method of claim 1, wherein: the determining of the potential gradient value of one of the detection positions based on potential data of the two detection positions and a distance between the two detection positions comprises: obtaining a potential difference between potential data of one of the detection positions and potential data of the other detection position; and determining the potential gradient value according to a ratio of the potential difference to the distance, the potential gradient value satisfying the following relationship: ϕ = Δϕ / L. 3.The method of claim 1, wherein: the determining of the corrosion level of the detection position according to the difference value and the delivering of the corresponding number of the corrosion prevention units to the detection position based on the corrosion level comprises: selecting a corresponding number of the corrosion prevention units based on a set difference value range; delivering a first number of the corrosion prevention units to the detection position if the difference value is within a first difference value range; and delivering a second number of the corrosion prevention units to the detection position if the difference value is within a second difference value range, the first difference value range being smaller than the second difference value range, and the first number being smaller than the second number. 4.The method of claim 1, wherein: the detection positions that have corrosion are marked as target positions, and the method further comprises: obtaining an initial gradient value and a current gradient value of the target positions when the corrosion prevention units are delivered to the target positions, the initial gradient value being a potential gradient value of the target positions before the corrosion prevention units are configured, and the current gradient value being a potential gradient value of the target positions at a current time. ​ ​ ​ ​ ​ ​ ​ ​ ​ ； where Δ ​ represents the potential gradient value; ΔV represents the potential difference; and L represents the separation distance. ​ ​ ​ ​ ​ ​ ​ ​ determining a potential gradient variation of the target position based on the initial gradient value and the current gradient value; determining a recovery time required for the potential gradient of the target position to drop to the gradient threshold value, the recovery time, the current gradient value and a potential recovery rate satisfying the following relationship: T = (G1-G2) / (ΔG / Δt); wherein, T represents the recovery time, G1 represents the current gradient value, G2 represents the gradient threshold value, ΔG represents the potential gradient variation, Δt represents a time interval from when the anticorrosion unit is transported to the target position to the current time, and (ΔG / Δt) represents the potential recovery rate; if the recovery time is less than a preset time threshold value, completing the anticorrosion of the target position.

5. The gas pipeline anticorrosion method according to claim 4, wherein the method further comprises: if the recovery time is not less than the time threshold value, increasing the number of the anticorrosion units transported to the target position; or re-determining the corrosion grade of the target position according to a difference between the initial gradient value of the target position and the gradient threshold value. comprising:

6. A gas pipeline anticorrosion system connected to the gas pipeline, characterized by, a detection unit configured to acquire potential data of detection positions on a gas pipeline, the detection positions being distributed along an extension direction of the gas pipeline; a data processing unit configured to determine a potential gradient value of two detection positions based on the potential data of the two detection positions and a distance between the two detection positions; comparing the potential gradient value with a preset gradient threshold value and obtaining a difference between the potential gradient value and the gradient threshold value; determining a corrosion grade of the detection positions according to the difference; a transportation unit configured to receive a control signal representing the corrosion grade and transport a corresponding number of anticorrosion units to the detection positions according to the control signal, the anticorrosion units being active metals; wherein the data processing unit is further configured to determine two detection positions with the potential gradient value greater than the gradient threshold value and mark them as target positions, and there is at least one detection position between the two target positions and marked as a detection position to be detected, the potential gradient value of the detection position to be detected being substantially the same as that of the target positions; the data processing unit can control the transportation unit to transport a corresponding number of the anticorrosion units to the two target positions based on the corrosion grades of the two target positions; and the data processing unit can recheck the potential data of the detection position to be detected, obtain the potential gradient value of the detection position to be detected, determine the corrosion grade of the detection position to be detected, and control the transportation unit to transport a corresponding number of the anticorrosion units based on the corrosion grade of the detection position to be detected.

7. The gas pipeline anticorrosion system according to claim 6, wherein ​ The conveying unit comprises a guide rail arranged on the outer surface of the gas pipeline, the extending direction of the guide rail is consistent with the extending direction of the gas pipeline, the guide rail is connected with a displacement table capable of sliding relative to the guide rail, and the displacement table is used for fixing the anti-corrosion unit; when the displacement table moves to the detection position, the displacement table can release the anti-corrosion unit, so that the anti-corrosion unit is connected with the detection position.

8. An electronic device, comprising: The application further provides a device for implementing the anti-corrosion method of the gas pipeline, which comprises a memory and a processor, wherein the memory stores program instructions; and the processor executes the program instructions stored on the memory to realize the steps of the anti-corrosion method of the gas pipeline according to any one of claims 1 to 5.

9. A computer readable storage medium, comprising: The computer readable storage medium stores a computer program, and the computer program is executed by a processor to realize the steps of the anti-corrosion method of the gas pipeline according to any one of claims 1 to 5.

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