Cathode protection device and method for earthing storage tank

Abstract

The invention discloses a cathode protection device and method for an earthing storage tank, and relates to the technical field of earthing storage tank protection. The device comprises a storage tank and a buried pipeline connected with the storage tank, the storage tank and the buried pipeline are coated with anti-corrosion coatings, and a cathode protection system is buried around the storage tank; and the cathode protection system is also connected with a remote monitoring end. Normal operation of the cathode protection system can be ensured through an impressed current cathode protection method, and cathode protection of the earthing storage tank is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of earth-covered storage tank protection, and in particular to a cathode protection device and a protection method for an earth-covered storage tank. Background Art

[0002] In the current field of industrial storage tanks, earth-covered storage tanks are a common storage device widely used in many industries such as oil and gas, chemical industry and water treatment. In order to ensure the long-term stable operation of storage tanks and their connecting pipes and prevent leakage and safety accidents caused by corrosion, anti-corrosion coatings combined with cathodic protection systems are generally used. However, although this comprehensive protection strategy has improved the anti-corrosion ability of storage tanks to a certain extent, there are still some defects that are difficult to completely overcome with existing technologies.

[0003] In current technology, only anti-corrosion coatings are applied on the outside of the tanks, which can effectively isolate the tanks from direct contact with the soil environment and reduce the occurrence of chemical corrosion. However, their long-term effects are affected by multiple factors such as coating material properties, construction quality, and environmental factors. They are prone to aging, peeling, or damage, resulting in reduced protective effects. Especially in extreme weather conditions, groundwater level fluctuations, or changes in soil pH, the durability of the coating faces severe challenges.

[0004] Therefore, the existing cathodic protection devices for earth-covered storage tanks still have deficiencies in terms of the long-term effectiveness of the anti-corrosion coating and the intelligence of remote monitoring. Therefore, developing more efficient, stable and intelligent cathodic protection devices to overcome the defects of the existing technology and improve the safety and service life of storage tanks has become an important direction for the development of current storage tank protection technology. Summary of the invention

[0005] The purpose of the present invention is to provide a cathodic protection device and a protection method for an earth-covered storage tank, which can ensure the normal operation of the cathodic protection system through an impressed current cathodic protection method and realize cathodic protection of the earth-covered storage tank.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A cathodic protection device and method for an earth-covered storage tank, comprising: a storage tank and a buried pipeline connected to the storage tank; the storage tank and the buried pipeline are both covered with an anti-corrosion coating, and a cathodic protection system is buried around the storage tank; the cathodic protection system is also connected to a remote monitoring terminal.

[0008] Optionally, the cathodic protection system specifically includes: an anode, a reference electrode and a power module; the anode and the reference electrode are both connected to the power module, and the anode and the reference electrode are both buried in the soil around the storage tank at a set distance.

[0009] Optionally, the anode is a mixed noble metal oxide anode.

[0010] Optionally, the power supply module includes a main power supply circuit and a bypass power supply circuit; the main power supply circuit and the bypass power supply circuit are connected in parallel; the main power supply circuit is used to supply power; and the bypass power supply circuit is used to supply power as an alternative power supply when the main power supply circuit is short-circuited or open-circuited.

[0011] Optionally, the remote monitoring terminal specifically includes: a potential monitoring module and an alarm module connected in sequence; the potential monitoring module is also connected to the cathodic protection system;

[0012] Among them, the potential monitoring module is used to monitor the cathodic protection potential of the storage tank; the alarm module is used to compare the monitored cathodic protection potential with the set protection range, and when the monitored cathodic protection potential exceeds the set protection range, an alarm is issued to the maintenance personnel.

[0013] Optionally, the alarm module is installed on a smart mobile terminal held by a maintenance personnel, and specifically includes: a controller, a buzzer and an indicator light; the input end of the controller is connected to the potential monitoring module, and the output end of the controller is connected to the buzzer and the indicator light respectively;

[0014] Wherein, the controller is used to output an alarm signal when the monitored cathode protection potential exceeds the set protection range; the buzzer and the indicator light are used to make an audible and visual alarm according to the alarm signal.

[0015] Optionally, the smart mobile terminal includes at least one of a personal computer, a laptop computer, a smart phone, a tablet computer and a portable wearable device.

[0016] The present invention also provides a cathodic protection method for an earth-covered storage tank, which is applied to the cathodic protection device as described above, comprising:

[0017] monitoring the cathodic protection potential of the tank;

[0018] The monitored cathode protection potential is compared with the set protection range, and when the monitored cathode protection potential exceeds the set protection range, an alarm is issued to the maintenance personnel.

[0019] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0020] The present invention discloses a cathodic protection device and a protection method for an earth-covered storage tank, wherein the device comprises a storage tank and a buried pipeline connected to the storage tank; the storage tank and the buried pipeline are both covered with an anti-corrosion coating, and a cathodic protection system is buried around the storage tank; the cathodic protection system is also connected to a remote monitoring terminal. The present invention can ensure the normal operation of the cathodic protection system through an impressed current cathodic protection method, thereby realizing cathodic protection of the earth-covered storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic structural diagram of a cathodic protection device for an earth-covered storage tank according to the present invention;

[0023] Figure 2 The present invention is a schematic flow diagram of the cathodic protection method for earth-covered storage tanks.

[0024] Figure numerals: 1. Storage tank; 2. Buried pipeline; 3. Cathodic protection system; 4. Remote monitoring terminal. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The purpose of the present invention is to provide a cathodic protection device and a protection method for an earth-covered storage tank, which can ensure the normal operation of the cathodic protection system through an impressed current cathodic protection method and realize cathodic protection of the earth-covered storage tank.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 As shown, the present invention provides a cathodic protection device for an earth-covered storage tank, comprising: a storage tank 1 and a buried pipeline 2 connected to the storage tank 1; the storage tank 1 and the buried pipeline 2 are both covered with an anti-corrosion coating, and a cathodic protection system 3 is buried around the storage tank 1; the cathodic protection system 3 is also connected to a remote monitoring terminal 4.

[0029] As a specific implementation, the cathodic protection system 3 specifically includes: an anode, a reference electrode and a power module; the anode and the reference electrode are both connected to the power module, and the anode and the reference electrode are both buried in the surrounding soil of the storage tank 1 at a set interval. The anode is a mixed noble metal oxide anode.

[0030] As a specific implementation of the power supply module, it mainly includes a main power supply circuit and a bypass power supply circuit; the main power supply circuit and the bypass power supply circuit are connected in parallel; the main power supply circuit is used for power supply; the bypass power supply circuit is used for power supply as an alternative power supply when the main power supply circuit is short-circuited or open-circuited.

[0031] As a specific implementation, the remote monitoring terminal 4 specifically includes: a potential monitoring module and an alarm module connected in sequence; the potential monitoring module is also connected to the cathodic protection system 3; wherein the potential monitoring module is used to monitor the cathodic protection potential of the storage tank 1; the alarm module is used to compare the monitored cathodic protection potential with the set protection range, and when the monitored cathodic protection potential exceeds the set protection range, an alarm is issued to the maintenance personnel.

[0032] As a specific implementation of the alarm module, it is installed on a smart mobile terminal held by a maintenance personnel, and specifically includes: a controller, a buzzer and an indicator light; the input end of the controller is connected to the potential monitoring module, and the output end of the controller is respectively connected to the buzzer and the indicator light; wherein, the controller is used to output an alarm signal when the monitored cathode protection potential exceeds the set protection range; the buzzer and the indicator light are used to make an audible and visual alarm according to the alarm signal.

[0033] In this embodiment, the intelligent mobile terminal includes at least one of a personal computer, a laptop computer, a smart phone, a tablet computer, and a portable wearable device.

[0034] In addition, based on the cathode protection device, the present invention also provides Figure 2 A cathodic protection method for an earth-covered storage tank is shown, comprising:

[0035] Step 100: monitoring the cathodic protection potential of the storage tank 1 .

[0036] Step 200: Compare the monitored cathode protection potential with the set protection range, and when the monitored cathode protection potential exceeds the set protection range, alarm the maintenance personnel.

[0037] Based on the above technical solution, the following embodiments are provided.

[0038] This embodiment provides a cathodic protection device for an earth-covered storage tank, which aims to ensure the long-term anti-corrosion safety of a storage tank 1 and its connected pipes through an efficient cathodic protection system 3 and remote monitoring means. The device mainly includes a storage tank 1, an underground pipe 2, an anti-corrosion coating, a cathodic protection system 3, and a remote monitoring terminal 4.

[0039] For storage tank 1 and buried pipeline 2: storage tank 1 is used to store the medium, and buried pipeline 2 is responsible for connecting storage tank 1 to the external system. Both are covered with anti-corrosion coating to reduce direct contact with the soil environment and reduce the risk of corrosion.

[0040] For cathodic protection system 3:

[0041] Anode: A mixed precious metal oxide anode is used, which can effectively provide the required protection current due to its excellent conductivity, stability and corrosion resistance. The anode is buried in the soil around the tank 1 at a set interval to ensure the uniformity of current distribution.

[0042] Reference electrode: used to measure the potential on the surface of the tank 1 and provide a basis for adjusting the cathodic protection system 3. It is also buried in the soil and kept at an appropriate distance from the anode.

[0043] Power module: including main power circuit and bypass power circuit. The main power circuit is responsible for daily power supply to ensure the normal operation of the cathodic protection system 3; the bypass power circuit is used as a backup and automatically switches when the main power fails to ensure uninterrupted power supply to the system.

[0044] For remote monitoring terminal 4:

[0045] Potential monitoring module: monitors the cathodic protection potential of tank 1 in real time and transmits the data to the alarm module.

[0046] Alarm module: installed on the smart mobile terminal (such as smart phones, tablet computers, etc.) held by maintenance personnel, including controller, buzzer and indicator light. When the monitored potential exceeds the set protection range, the controller sends an alarm signal, drives the buzzer and indicator light to sound and light alarm, and promptly notifies the maintenance personnel to handle it.

[0047] The implementation steps as a cathodic protection method are as follows:

[0048] Initial setup:

[0049] Install and debug the cathodic protection system 3, ensuring that the anode, reference electrode and power module are correctly connected and buried in place.

[0050] The protection range of the cathodic protection potential is set, and the potential monitoring module and the alarm module of the remote monitoring terminal 4 are configured.

[0051] Real-time monitoring:

[0052] The potential monitoring module continuously monitors the cathodic protection potential of the storage tank 1 and transmits the data to the alarm module in real time.

[0053] Data analysis and alarm:

[0054] After receiving the potential data, the alarm module compares it with the set protection range.

[0055] If the monitored potential exceeds the protection range, the controller will immediately send out an alarm signal and drive the buzzer and indicator light to give an audible and visual alarm.

[0056] Emergency Response:

[0057] After receiving the alarm, the maintenance personnel will quickly locate the problem based on the alarm information and take corresponding maintenance measures, such as checking the power module, adjusting the anode position or replacing the anti-corrosion coating.

[0058] Scheduled maintenance:

[0059] In addition to emergency response, the cathodic protection system3 should also be regularly inspected and maintained, including cleaning the dirt on the anode surface, testing the performance of the power module, and calibrating the accuracy of the reference electrode, to ensure the long-term stable operation of the system.

[0060] Therefore, it can be seen from this embodiment that the following beneficial effects are achieved:

[0061] The cathodic protection device and protection method for the earth-covered storage tank 1 have significant beneficial effects. First, by using a mixed noble metal oxide anode as the core component of the cathodic protection system 3, not only the current efficiency is improved and the service life of the anode is extended, but also the anti-corrosion ability of the storage tank 1 and the buried pipeline 2 in a complex soil environment is enhanced. At the same time, the dual-path design of the power module (the main power supply and the bypass power supply are connected in parallel) ensures that the cathodic protection system 3 can continue to supply power even if the main power supply fails, greatly improving the reliability and stability of the system.

[0062] The introduction of the remote monitoring terminal 4 realizes the real-time monitoring and intelligent management of the cathodic protection potential of the storage tank 1. The potential monitoring module can accurately measure and transmit potential data, and the alarm module can respond quickly. Once the potential is detected to exceed the set protection range, an audible and visual alarm will be immediately sent to the maintenance personnel through the intelligent mobile terminal, which greatly shortens the fault response time and reduces the safety risks and economic losses caused by corrosion problems.

[0063] In addition, the diverse selection of smart mobile terminals (including personal computers, smart phones, etc.) allows maintenance personnel to receive alarm information anytime and anywhere, conduct remote monitoring and troubleshooting, and improve work efficiency and flexibility. In summary, the cathodic protection device and its protection method not only improve the anti-corrosion performance of the storage tank 1, but also ensure the safe operation of the storage tank 1 through intelligent and remote management means, and have significant technical advancement and practical application value.

[0064] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0065] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A cathodic protection device for an earth-covered storage tank, characterized in that: include: A storage tank and a buried pipeline connected to the storage tank; the storage tank and the buried pipeline are both covered with an anti-corrosion coating, and a cathodic protection system is buried around the storage tank; the cathodic protection system is also connected to a remote monitoring terminal.

2. The cathodic protection device for earth-covered storage tanks according to claim 1, characterized in that: The cathodic protection system specifically includes: an anode, a reference electrode and a power module; the anode and the reference electrode are both connected to the power module, and the anode and the reference electrode are both buried in the soil around the storage tank at a set distance.

3. The cathodic protection device for earth-covered storage tanks according to claim 2, characterized in that: The anode is a mixed noble metal oxide anode.

4. The cathodic protection device for an earth-covered storage tank according to claim 2, characterized in that: The power supply module includes a main power supply circuit and a bypass power supply circuit; the main power supply circuit and the bypass power supply circuit are connected in parallel; the main power supply circuit is used for supplying power; the bypass power supply circuit is used for supplying power as an alternative power supply when a short circuit or open circuit occurs in the main power supply circuit.

5. The cathodic protection device for earth-covered storage tanks according to claim 1, characterized in that: The remote monitoring terminal specifically includes: a potential monitoring module and an alarm module connected in sequence; the potential monitoring module is also connected to the cathodic protection system; Among them, the potential monitoring module is used to monitor the cathodic protection potential of the storage tank; the alarm module is used to compare the monitored cathodic protection potential with the set protection range, and when the monitored cathodic protection potential exceeds the set protection range, an alarm is issued to the maintenance personnel.

6. The cathodic protection device for earth-covered storage tanks according to claim 5, characterized in that: The alarm module is installed on the smart mobile terminal held by the maintenance personnel, and specifically includes: a controller, a buzzer and an indicator light; the input end of the controller is connected to the potential monitoring module, and the output end of the controller is connected to the buzzer and the indicator light respectively; Wherein, the controller is used to output an alarm signal when the monitored cathode protection potential exceeds the set protection range; the buzzer and the indicator light are used to make an audible and visual alarm according to the alarm signal.

7. The cathodic protection device for earth-covered storage tanks according to claim 6, characterized in that: The intelligent mobile terminal includes at least one of a personal computer, a laptop computer, a smart phone, a tablet computer and a portable wearable device.

8. A cathodic protection method for an earth-covered storage tank, applied to a cathodic protection device as claimed in any one of claims 1 to 7, characterized in that: include: monitoring the cathodic protection potential of the tank; The monitored cathode protection potential is compared with the set protection range, and when the monitored cathode protection potential exceeds the set protection range, an alarm is issued to the maintenance personnel.

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