Oil and gas pipeline anti-corrosion protection device based on sacrificial anode

Abstract

The oil and gas pipeline anti-corrosion protection device comprises a water storage tank, a rainwater collector, a water vapor condensation mechanism, a solar power supply mechanism, an anti-corrosion protection mechanism and a water spraying mechanism, a liquid level detection piece is arranged in the water storage tank, and a water outlet is formed in the lower end of the water storage tank; the rainwater collector is used for collecting rainwater and storing the rainwater in the water storage tank; the anti-corrosion protection mechanism comprises an anode and a reference electrode; and the water spraying mechanism comprises a water spraying pipe, a distributor and a water outlet valve. The device has the beneficial effects that the water spraying pipe takes water from the water storage tank through the water outlet, the lower end of the water spraying pipe is communicated with the inlet of the distributor, and the water is uniformly distributed above the anode and the reference electrode, so that the humidity of soil near the anode and the reference electrode can be improved, the conductivity of the soil is improved, and the effect of the anti-corrosion protection mechanism is enhanced; therefore, oil and gas pipeline anti-corrosion protection can be carried out through a sacrificial anode method in a high soil resistivity environment.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas pipeline anti-corrosion protection, and in particular to an oil and gas pipeline anti-corrosion protection device based on a sacrificial anode. Background Art

[0002] The sacrificial anode method for corrosion protection of oil and gas pipelines is an effective electrochemical protection technology. The sacrificial anode method is based on the different characteristics of different metals in electrochemical reactions. During the corrosion process, an oxidation-reduction reaction occurs on the metal surface. The anode metal loses electrons and is oxidized, while the cathode metal gains electrons and is reduced. Since the activity of the anode metal is higher than that of the cathode metal (i.e., the protected pipeline), the anode will corrode first, thereby attracting and diverting the corrosion current that may have originally acted on the pipeline, effectively preventing the occurrence of pipeline corrosion.

[0003] However, in a high soil resistivity environment, the electrolyte content in the soil is low and the conductivity is poor, which makes it difficult for the current to be effectively transferred between the anode and the pipeline. Therefore, the sacrificial anode is difficult to play its due protective role. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical deficiencies and propose an oil and gas pipeline anti-corrosion protection device based on sacrificial anodes to solve the technical problem in the prior art that it is difficult to perform oil and gas pipeline anti-corrosion protection by the sacrificial anode method in a high soil resistivity environment.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] The present invention provides an oil and gas pipeline anti-corrosion protection device based on sacrificial anode, comprising:

[0007] A water storage tank, wherein a liquid level detection member is arranged in the water storage tank, and a water outlet is provided at the lower end of the water storage tank;

[0008] A rainwater collector, which is used to collect rainwater and store it in the water storage tank;

[0009] A water vapor condensation mechanism, the water vapor condensation mechanism is used to condense water vapor in the air into liquid water and store it in the water storage tank;

[0010] A solar power supply mechanism, which is used to convert solar energy into electrical energy and provide electrical energy for the water vapor condensation mechanism;

[0011] an anti-corrosion protection mechanism, the anti-corrosion protection mechanism comprising an anode and a reference electrode, the anode and the reference electrode are both buried under the ground; and,

[0012] A water sprinkling mechanism, the water sprinkling mechanism comprises a water sprinkling pipe, a distributor and a water outlet valve, the upper end of the water sprinkling pipe is connected to the water outlet, the lower end of the water sprinkling pipe is connected to the inlet of the distributor, and the distributor is buried under the ground and located above the anode and the reference electrode.

[0013] In some embodiments, the liquid level detection component is an ultrasonic ranging sensor, which is fixed on the inner top surface of the water storage tank and is used for downward ranging.

[0014] In some embodiments, a first water inlet is provided at the upper end of the water storage tank, and the rainwater collector includes a plurality of columns, a water collecting container and a first filter screen. The lower end of the column is fixed to the ground, and the water collecting container is fixed above the column. The water storage tank is fixed to the column via a plurality of cross bars. A drainage hole is provided at the lower end of the water collecting container, and the drainage hole is located above the first water inlet and is connected to the first water inlet via a first connecting pipe. The upper end of the water collecting container is open, and the first filter screen cover is provided at the upper end opening of the water collecting container.

[0015] In some embodiments, a first one-way valve is disposed on the first connecting pipe.

[0016] In some embodiments, a second filter screen is disposed in the water storage tank, and the second filter screen is located below the first water inlet.

[0017] In some embodiments, an overflow port is provided at the upper end of the water storage tank, and a second one-way valve is disposed in the overflow port.

[0018] In some embodiments, a second water inlet is further provided at the upper end of the water storage tank, the water vapor condensation mechanism comprises a cold box, a condenser, a compressor, a condenser, a capillary tube and an evaporator, the cold box is made of a heat-insulating material, a closed refrigeration chamber is provided in the cold box, an air inlet is provided at one end of the cold box, an air outlet is provided at the other end of the cold box, a condensate outlet is provided on the lower end surface of the cold box, the condensate outlet is communicated with the second water inlet, a first fan is provided in the air inlet, a third one-way valve is provided in the air outlet, and the condenser is vertically fixed in the cold box;

[0019] The inlet of the condenser is connected to the outlet of the compressor, the inlet of the capillary tube is connected to the outlet of the condenser, the evaporator is arranged in the condenser, the inlet of the evaporator is connected to the outlet of the capillary tube, and the outlet of the evaporator is connected to the inlet of the compressor.

[0020] In some embodiments, a second fan is disposed at the upper end of the condenser tube.

[0021] In some embodiments, the solar power supply mechanism includes a photovoltaic panel and a power supply, the photovoltaic panel is installed above the water collection container, the photovoltaic panel is electrically connected to the power supply, and the power supply is electrically connected to the compressor, the first fan, the second fan and the liquid level detection component.

[0022] In some embodiments, the sacrificial anode-based oil and gas pipeline corrosion protection device also includes a voltmeter and a controller, one end of the voltmeter is electrically connected to the anode, the other end of the voltmeter is electrically connected to the reference electrode, the controller is electrically connected to the power supply, the voltmeter and the water outlet valve, and is used to open the water outlet valve when the voltage value of the voltmeter is lower than a preset voltage.

[0023] Compared with the prior art, the sacrificial anode-based oil and gas pipeline anti-corrosion protection device provided by the present invention has the following beneficial effects: when in use, the rainwater collector is used to capture and collect rainwater, and the collected rainwater is then guided and stored in a water storage tank. The liquid level detection component is used to monitor the water level in the tank in real time. When the water level is lower than a first preset height, the water vapor condensation mechanism is turned on. The water vapor condensation mechanism uses water vapor in the air and converts it into liquid water through a condensation process. The condensed liquid water is also stored in the water storage tank. When the water level reaches a second preset height, the water vapor condensation mechanism is suspended, so that the water level in the water storage tank is not too low or too high. The anode, the oil and gas pipeline and the reference electrode form a primary battery system, which forms a closed loop through the underground soil. The anode will be corroded preferentially as a sacrificial anode, thereby protecting the oil and gas pipeline from damage. The sprinkler pipe takes water from the water tank through the water outlet and is connected to the inlet of the distributor through its lower end, distributing the water evenly above the anode and reference electrode, thereby increasing the humidity of the soil near the anode and reference electrode and increasing its conductivity, thereby enhancing the effect of the anti-corrosion protection mechanism, so that the sacrificial anode method can be used to protect the oil and gas pipeline from corrosion in a high soil resistivity environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of an oil and gas pipeline anti-corrosion protection device based on a sacrificial anode provided by an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A partial enlarged view of the middle area A;

[0026] Figure 3 yes Figure 1 Structural diagram of the anti-corrosion protection mechanism and the water sprinkling mechanism;

[0027] Figure 4 yes Figure 3 A partial enlarged view of the middle area B;

[0028] Description of the accompanying drawings: 1-water storage tank, 11-liquid level detection member, 12-water outlet, 13-first water inlet, 14-cross bar, 15-second filter screen, 16-overflow port, 161-second one-way valve, 17-second water inlet, 2-rainwater collector, 21-column, 22-water collection container, 221-drain hole, 23-first filter screen, 24-first connecting pipe, 25-first one-way valve, 3-water vapor condensation mechanism, 31-cold box, 311-air inlet, 312-air outlet, 3 13-condensate outlet, 314-first fan, 315-third one-way valve, 32-condenser, 321-second fan, 33-compressor, 34-condenser, 35-capillary tube, 36-evaporator, 37-inclined tube, 371-fourth one-way valve, 4-solar power supply mechanism, 41-photovoltaic panel, 42-power supply, 5-anti-corrosion protection mechanism, 51-anode, 52-reference electrode, 6-water sprinkling mechanism, 61-water sprinkling pipe, 62-distributor, 63-water outlet valve, 7-oil and gas pipeline. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] See also Figure 1-Figure 4 , Figure 1 This is a structural schematic diagram of an oil and gas pipeline anti-corrosion protection device based on a sacrificial anode in one embodiment of the present invention. The oil and gas pipeline anti-corrosion protection device based on a sacrificial anode includes a water storage tank 1, a rainwater collector 2, a water vapor condensation mechanism 3, a solar power supply mechanism 4, an anti-corrosion protection mechanism 5 and a water sprinkling mechanism 6.

[0031] A liquid level detection element 11 is provided in the water storage tank 1, and a water outlet 12 is provided at the lower end of the water storage tank 1;

[0032] The rainwater collector 2 is used to collect rainwater and store it in the water storage tank 1;

[0033] The water vapor condensation mechanism 3 is used to condense water vapor in the air into liquid water and store it in the water storage tank 1;

[0034] The solar power supply mechanism 4 is used to convert solar energy into electrical energy and provide electrical energy for the water vapor condensation mechanism 3;

[0035] The anti-corrosion protection mechanism 5 includes an anode 51 and a reference electrode 52, and both the anode 51 and the reference electrode 52 are buried under the ground. In this embodiment, the anode 51 is a magnesium alloy sacrificial anode, and the reference electrode 52 is a graphite electrode.

[0036] The water sprinkling mechanism 6 includes a water sprinkling pipe 61, a distributor 62 and a water outlet valve 63. The upper end of the water sprinkling pipe 61 is connected to the water outlet 12, and the lower end of the water sprinkling pipe 61 is connected to the inlet of the distributor 62. The distributor 62 is buried under the ground and is located above the anode 51 and the reference electrode 52.

[0037] When in use, the rainwater collector 2 is used to capture and collect rainwater, and the collected rainwater is then guided to and stored in the water storage tank 1. The liquid level detection component 11 is used to monitor the water level in the tank in real time. When the water level is lower than a first preset height, the water vapor condensation mechanism 3 is turned on. The water vapor condensation mechanism 3 uses water vapor in the air and converts it into liquid water through a condensation process. The condensed liquid water is also stored in the water storage tank 1. When the water level reaches a second preset height, the operation of the water vapor condensation mechanism 3 is suspended, so that the water level in the water storage tank 1 will not be too low or too high. The anode 51, the oil and gas pipeline 7 and the reference electrode 52 form a primary battery system, which forms a closed loop through the underground soil. The anode 51 will be corroded preferentially as a sacrificial anode, thereby protecting the oil and gas pipeline 7 from damage. The watering pipe 61 takes water from the water storage tank 1 through the water outlet 12, and is connected to the inlet of the distributor 62 through its lower end, so as to evenly distribute the water above the anode 51 and the reference electrode 52, thereby increasing the humidity of the soil near the anode 51 and the reference electrode 52 and increasing its conductivity, thereby enhancing the effect of the anti-corrosion protection mechanism 5, so that the oil and gas pipeline anti-corrosion protection can be carried out by the sacrificial anode method in a high soil resistivity environment.

[0038] In one embodiment, see Figure 1 and Figure 4 The liquid level detection element 11 is an ultrasonic distance sensor, which is fixed on the inner top surface of the water storage tank 1 and is used to measure the distance downward. The water level in the water storage tank is monitored in real time by the ultrasonic distance sensor to ensure that the water level is not too low or too high. The automation of the system is improved and no manual intervention is required.

[0039] In one embodiment, see Figure 1-Figure 3, a first water inlet 13 is provided at the upper end of the water storage tank, and the rainwater collector 2 includes a plurality of columns 21, a water collection container 22 and a first filter screen 23. The lower end of the column 21 is fixed to the ground, and the water collection container 22 is fixed above the column 21. The water storage tank 1 is fixed to the column 21 via a plurality of cross bars 14. A drainage hole 221 is provided at the lower end of the water collection container 22, and the drainage hole is located above the first water inlet 13 and is connected to the first water inlet 13 via a first connecting pipe 24. The upper end of the water collection container 22 is open, and the first filter screen 23 is covered at the upper end opening of the water collection container 22. The rainwater collector can efficiently collect rainwater and guide it into the water storage tank, providing a stable water source for the system. The first filter screen 23 can filter out impurities in the rainwater and protect subsequent equipment from blockage and damage.

[0040] In one embodiment, see Figure 1-Figure 3 , a first one-way valve 25 is provided on the first connecting pipe 24. The first one-way valve can prevent water from flowing back, ensure that rainwater can smoothly enter the water storage tank, and prevent the water vapor in the water storage tank from being discharged through the first connecting pipe 24, which can reduce the natural volatilization of water in the water storage tank.

[0041] In one embodiment, see Figure 1-Figure 3 A second filter screen 15 is provided in the water storage tank, and the second filter screen 15 is located below the first water inlet 13. The second filter screen further purifies the water source.

[0042] In one embodiment, see Figure 1-Figure 4 The upper end of the water storage tank 1 is provided with an overflow port 16, and a second one-way valve 161 is arranged in the overflow port 16. The overflow port 16 can automatically drain water when the water level in the water storage tank is too high to prevent water from overflowing, and the second one-way valve 161 can prevent the water storage tank from being directly connected to the outside world, thereby reducing the natural volatilization of water in the water storage tank.

[0043] In one embodiment, see Figure 1-Figure 3The upper end of the water storage tank 1 is also provided with a second water inlet 17. The water vapor condensation mechanism 3 includes a cold box 31, a condensing tube 32, a compressor 33, a condenser 34, a capillary tube 35 and an evaporator 36. The cold box is made of a heat-insulating material. There is a closed refrigeration cavity in the cold box. An air inlet 311 is provided at one end of the cold box. The cold box 31 is provided with an air inlet 311 at one end and an air outlet 312 at the other end. A condensed water outlet 313 is provided on the lower end surface of the cold box 31, and the condensed water outlet 313 is connected to the second water inlet 17. A first fan 314 is provided in the air inlet 311, and a third one-way valve 315 is provided in the air outlet. The condensing tube 32 is vertically fixed in the cold box 31. The inlet of the condenser 34 is connected to the outlet of the compressor 33, the inlet of the capillary tube 35 is connected to the outlet of the condenser 34, and the evaporator 36 is provided in the condensing tube 32. The inlet of the evaporator 36 is communicated with the outlet of the capillary tube 35 , and the outlet of the evaporator 36 is communicated with the inlet of the compressor 33 .

[0044] The working principle of the water vapor condensation mechanism 3 is as follows: the gaseous refrigerant is discharged from the outlet of the compressor 33, and then enters the condenser 34 and the capillary tube 35. Due to the throttling effect of the capillary tube 35, the refrigerant gathers more and more in the condenser 34, the pressure gradually increases, the boiling point gradually rises, and the refrigerant gradually changes from gas to liquid. In this process, the refrigerant releases heat to the condenser 34, and then the refrigerant enters the evaporator 36. Since the tube diameter of the evaporator 36 is much larger than the aperture of the capillary tube 35, the pressure of the refrigerant will drop suddenly after entering the evaporator 36, the boiling point will drop, and the refrigerant will change from liquid to gas. In this process, the refrigerant absorbs the heat of the evaporator 36. Since the evaporator 36 is located in the condenser tube 32, the temperature in the condenser tube 32 will drop, and with the heat conduction, the temperature in the cold box 31 will drop as a whole; then the refrigerant enters the compressor 33 again for the next cycle. As the temperature in the cold box 31 decreases as a whole, and the temperature at the condenser 32 is the lowest, the dew point of the air in the cold box 31 decreases, and condenses on the condenser 32, and finally drips from the condenser 32, and is then discharged into the water storage tank 1 through the condensate outlet 313 and the second water inlet 17, thereby collecting the condensate; and, when the first fan 314 provided in the air inlet 311 is started, the outside air will be blown into the cold box 31, and the air in the cold box 31 will be discharged through the third one-way valve 315. When the first fan 314 is not started, the third one-way valve 315 will not be opened, for example, it will be opened for 1 minute every 10 minutes, so that the air in the cold box 31 can be ventilated, thereby avoiding that the water vapor concentration in the air in the cold box 31 is too low, resulting in a reduction in condensate output.

[0045] In one embodiment, see Figure 1-Figure 3A second fan 321 is provided at the upper end of the condenser tube 32. The second fan 321 blows the cold air in the condenser tube 32 into the entire cold box 31, thereby reducing the temperature of the air in the entire cold box 31.

[0046] In one embodiment, see Figure 1-Figure 3 The condensed water outlet 313 is connected to the second water inlet 17 via an inclined tube 37, and a fourth one-way valve 371 is arranged in the inclined tube 37. The fourth one-way valve 371 allows the condensed water discharged from the condensed water outlet 313 to flow into the second water inlet 17, and prevents the water storage tank 1 from being directly connected to the outside, thereby reducing the natural volatilization of water in the water storage tank 1.

[0047] In one embodiment, see Figure 1-Figure 3 The solar power supply mechanism 4 includes a photovoltaic panel 41 and a power supply 42. The photovoltaic panel 41 is installed above the water collecting container 22. The photovoltaic panel 41 is electrically connected to the power supply 42. The power supply 42 is electrically connected to the compressor 33, the first fan 314, the second fan 321 and the liquid level detection component 11.

[0048] In one embodiment, see Figure 1-Figure 3 , the oil and gas pipeline anti-corrosion protection device based on sacrificial anode also includes a voltmeter and a controller, one end of the voltmeter is electrically connected to the anode, one end of the voltmeter is electrically connected to the anode 51, and the other end is electrically connected to the reference electrode 52. The controller is electrically connected to the power supply 42, the voltmeter and the water outlet valve 63, and is used to open the water outlet valve 63 when the voltage value of the voltmeter is lower than the preset voltage. The voltmeter can monitor the voltage value between the anode and the reference electrode in real time, providing an intuitive indication of the operating status of the system. The controller can automatically adjust the opening state of the water outlet valve according to the reading of the voltmeter, so that when the voltage is low, by controlling the water outlet, the soil moisture above the anode and the reference electrode is increased, the conductivity is increased, and the voltage is increased. In this embodiment, the preset voltage is 1.5V.

[0049] In order to better understand the present invention, the following Figures 1 to 4The technical solution of the present invention is described in detail: when in use, the rainwater collector 2 is used to capture and collect rainwater, and the collected rainwater is then guided to and stored in the water storage tank 1. The liquid level detection component 11 is used to monitor the water level in the tank in real time. When the water level is lower than a first preset height, the water vapor condensation mechanism 3 is turned on. The water vapor condensation mechanism 3 uses water vapor in the air and converts it into liquid water through a condensation process. The condensed liquid water is also stored in the water storage tank 1. When the water level reaches a second preset height, the operation of the water vapor condensation mechanism 3 is suspended, so that the water level in the water storage tank 1 will not be too low or too high. The anode 51, the oil and gas pipeline 7 and the reference electrode 52 form a primary battery system, which forms a closed loop through the underground soil. The anode 51 will be corroded preferentially as a sacrificial anode, thereby protecting the oil and gas pipeline 7 from damage. The watering pipe 61 takes water from the water storage tank 1 through the water outlet 12, and is connected to the inlet of the distributor 62 through its lower end, so as to evenly distribute the water above the anode 51 and the reference electrode 52, thereby increasing the humidity of the soil near the anode 51 and the reference electrode 52 and increasing its conductivity, thereby enhancing the effect of the anti-corrosion protection mechanism 5, so that the oil and gas pipeline anti-corrosion protection can be carried out by the sacrificial anode method in a high soil resistivity environment.

[0050] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An oil and gas pipeline anti-corrosion protection device based on sacrificial anode, characterized in that: include: A water storage tank, wherein a liquid level detection member is arranged in the water storage tank, and a water outlet is provided at the lower end of the water storage tank; A rainwater collector, which is used to collect rainwater and store it in the water storage tank; A water vapor condensation mechanism, the water vapor condensation mechanism is used to condense water vapor in the air into liquid water and store it in the water storage tank; A solar power supply mechanism, which is used to convert solar energy into electrical energy and provide electrical energy for the water vapor condensation mechanism; an anti-corrosion protection mechanism, the anti-corrosion protection mechanism comprising an anode and a reference electrode, the anode and the reference electrode are both buried under the ground; and, A water sprinkling mechanism, the water sprinkling mechanism comprises a water sprinkling pipe, a distributor and a water outlet valve, the upper end of the water sprinkling pipe is connected to the water outlet, the lower end of the water sprinkling pipe is connected to the inlet of the distributor, and the distributor is buried under the ground and located above the anode and the reference electrode.

2. The sacrificial anode-based oil and gas pipeline anti-corrosion protection device according to claim 1 is characterized in that: The liquid level detection component is an ultrasonic distance measuring sensor, which is fixed on the inner top surface of the water storage tank and is used for downward distance measurement.

3. The sacrificial anode-based oil and gas pipeline anti-corrosion protection device according to claim 1 is characterized in that: A first water inlet is provided at the upper end of the water storage tank, and the rainwater collector includes a plurality of columns, a water collecting container and a first filter screen. The lower end of the column is fixed to the ground, and the water collecting container is fixed above the column. The water storage tank is fixed to the column via a plurality of cross bars. A drainage hole is provided at the lower end of the water collecting container, and the drainage hole is located above the first water inlet and is connected to the first water inlet via a first connecting pipe. The upper end of the water collecting container is open, and the first filter screen cover is provided at the upper end opening of the water collecting container.

4. The oil and gas pipeline anti-corrosion protection device based on sacrificial anode according to claim 3 is characterized in that: The first connecting pipe is provided with a first one-way valve.

5. The oil and gas pipeline anti-corrosion protection device based on sacrificial anode according to claim 3 is characterized in that: A second filter screen is arranged in the water storage tank, and the second filter screen is located below the first water inlet.

6. The sacrificial anode-based oil and gas pipeline anti-corrosion protection device according to claim 1, characterized in that: An overflow port is provided at the upper end of the water storage tank, and a second one-way valve is arranged in the overflow port.

7. The oil and gas pipeline anti-corrosion protection device based on sacrificial anode according to claim 3 is characterized in that: A second water inlet is also provided at the upper end of the water storage tank, and the water vapor condensation mechanism includes a cold box, a condenser, a compressor, a condenser, a capillary tube and an evaporator. The cold box is made of a heat-insulating material, and has a closed refrigeration chamber therein. An air inlet is provided at one end of the cold box, and an air outlet is provided at the other end of the cold box. A condensed water outlet is provided on the lower end surface of the cold box, and the condensed water outlet is communicated with the second water inlet. A first fan is provided in the air inlet, and a third one-way valve is provided in the air outlet. The condenser is vertically fixed in the cold box. The inlet of the condenser is connected to the outlet of the compressor, the inlet of the capillary tube is connected to the outlet of the condenser, the evaporator is arranged in the condenser, the inlet of the evaporator is connected to the outlet of the capillary tube, and the outlet of the evaporator is connected to the inlet of the compressor.

8. The oil and gas pipeline anti-corrosion protection device based on sacrificial anode according to claim 7 is characterized in that: A second fan is arranged at the upper end of the condensing tube.

9. The oil and gas pipeline anti-corrosion protection device based on sacrificial anode according to claim 8, characterized in that: The solar power supply mechanism includes a photovoltaic panel and a power supply. The photovoltaic panel is installed above the water collection container. The photovoltaic panel is electrically connected to the power supply. The power supply is electrically connected to the compressor, the first fan, the second fan and the liquid level detection component.

10. The oil and gas pipeline anti-corrosion protection device based on sacrificial anode according to claim 9, characterized in that: The device also includes a voltmeter and a controller, one end of the voltmeter is electrically connected to the anode, the other end of the voltmeter is electrically connected to the reference electrode, and the controller is connected to the power supply, The voltmeter is electrically connected to the water outlet valve and is used to, when the voltage value of the voltmeter is lower than the preset voltage, Open the water outlet valve.

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