Method for using a double-layer tank automatic interlocking isolation system

Abstract

The present invention discloses an automatic interlocking isolation system for a double-layer tank and a method for using the same, and relates to the field of earth-covered tanks. The system comprises an earth-covered storage tank body, the storage tank body comprising an outer tank body and an inner tank body disposed within the outer tank body. The system also comprises a double-layer base, which is disposed at the lower portion of the storage tank body and has a bottom cavity therein; an interlayer cavity is provided between the outer tank body and the inner tank body, and the bottom cavity is connected to the interlayer cavity; a connecting switch is provided between the bottom cavity and the interlayer cavity, and a detection component is provided within the bottom cavity and the interlayer cavity, and the detection component is controlled in linkage with the connecting switch. The interlayer cavity between the inner and outer tank bodies is fully connected to the bottom cavity within the double-layer base. When the side wall or bottom wall of the inner tank body is deformed / ruptured / leaked, the detection component disposed within the interlayer cavity and the bottom cavity can promptly detect and issue an early warning, thereby facilitating subsequent maintenance and repair work.

Description

Technical Field

[0001] The present invention relates to the technical field of earth-covering tanks, and in particular to a method for using an automatic interlocking isolation system for a double-layer tank. Background Art

[0002] In recent years, with the rapid development of the natural gas industry, liquefied natural gas has become an important part of the global natural gas industry. The global LNG trade volume has a strong growth momentum. LNG is easy to store and transport and has many advantages. However, due to the particularity of LNG's physical state (ultra-low temperature liquid at about -162°C), the storage of LNG is a vital link in the LNG industry chain. The storage tanks for storing LNG are ultra-low temperature tanks with a design temperature of -50-196°C. They are divided into spherical tanks and vertical cylindrical tanks in terms of tank type. They are divided into double-layer spherical tanks, frozen underground tanks and prestressed concrete tanks in terms of structure. The double-layer spherical tank is a tank ball with two spheres nested together. The inner tank stores the medium and the outer tank protects it. The storage pressure is 0 .1MPa, generally suitable for liquid oxygen and liquid nitrogen storage, not easy to large-scale, and the flat bottom double-layer dome tank has a lower operating temperature. This type of tank is the most common form of ultra-low temperature storage tank and is suitable for large-capacity storage of liquefied natural gas. The inner tank steel requires sufficient low-temperature toughness and strength. The outer tank material is generally made of carbon steel. The space between the two tanks is filled with cold insulation material. The gap after the cold insulation material is filled is sealed with dry nitrogen to prevent the danger of medium leakage. The safe storage of LNG in ultra-low temperature state seriously affects the healthy development of the enterprise. The explosion and fire accident of liquefied hydrocarbon storage tank has caused great casualties and property losses.

[0003] Earth-covering cryogenic tanks effectively addresses these safety issues. Compared to above-ground spherical tanks, earth-covered tanks offer the following advantages: greater safety and operational stability, preventing steam cloud explosions, and protecting the tanks from nearby heat sources, explosion shock waves, flying objects, and other damaging factors, truly achieving inherent safety for the equipment.

[0004] Earth-covered storage tanks reduce the impact of atmospheric temperature fluctuations and the surrounding environment, providing stable operating conditions and enabling long-term, stable storage of liquefied hydrocarbons, leading to more stable operations and production. Earth-covered tanks also reduce safety distances from adjacent facilities, improving land utilization.

[0005] However, the ultra-low temperature tank after covering with soil has the following problems. First, it will bear the pressure of the soil layer, and the soil layer is affected by the humidity of the environment, especially in areas with extremely cold temperatures or large temperature differences between day and night. Humid environment, rainy weather or adsorption of groundwater will make the soil layer have a certain humidity. Under the influence of external temperature, it is easy to frost heave and thaw settlement, which will affect the outer wall of the earth-covered tank, causing it to contact with the inner tank body, forming a thermal bridge, and causing the ultra-low temperature liquid in the inner tank body to vaporize, resulting in an increase in the internal air pressure, triggering the pressure relief valve to open, resulting in a large amount of LNG gas loss. In this case, subsequent emergency repairs and maintenance The protection is very tricky. At the same time, the surface of the outer tank body freezes after the inner and outer tank bodies come into contact, causing the volume of the surrounding soil to further freeze and expand, which produces a stronger squeeze on the outer tank wall, thereby further squeezing the tank body. It may cause the inner tank body to be squeezed and deformed or even cracked or notched, resulting in an uncontrollable liquefied natural gas leakage accident. Secondly, the deformation of the outer tank body cannot be observed after covering with soil, and maintenance work cannot be carried out in time. If manual control can be carried out in time when slight deformation occurs, the maintenance cost will be greatly reduced and safety will be increased. It can be seen that the existing technology needs to be further improved and enhanced. Summary of the Invention

[0006] The purpose of the present invention is to provide a method for using an automatic interlocking isolation system for double-layer tanks, so as to solve the problems of untimely leakage monitoring of existing double-layer tanks and inability to observe and know the deformation of the tank body and perform maintenance work in a timely manner.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] The present invention provides a method for using a double-layer tank automatic interlocking isolation system, wherein the double-layer tank automatic interlocking isolation system comprises a soil-covered storage tank body, wherein the storage tank body comprises an outer tank body and an inner tank body arranged in the outer tank body; further comprising a double-layer base, wherein the double-layer base is arranged at the lower part of the storage tank body, and the interior of the double-layer base has a bottom cavity; an interlayer cavity is provided between the outer tank body and the inner tank body, and the bottom cavity is connected to the interlayer cavity; a communication opening is provided between the bottom cavity and the interlayer cavity The bottom cavity and the interlayer cavity are provided with detection components, and the detection components are linked to the connection switch for control; in the vertical direction, the interlayer cavity is provided with a plurality of segmented cavities; segmented partitions are provided between adjacent segmented cavities, and the segmented partitions are provided with segmented switches; in the horizontal direction, the bottom cavity is provided with a plurality of partition walls extending in the horizontal direction; the double-layer base includes an upper base and a lower base, and the upper base, the lower base and the partition walls surround a plurality of partition cavities, and the partition walls are provided with partition switches;

[0009] The main steps include:

[0010] (1) The detection component continuously and in real time monitors the changes in temperature, pressure, gas composition, and the presence of liquid leakage inside the interlayer cavity and the bottom cavity, and simultaneously monitors the changes in the horizontal distance between the inner tank body and the outer tank body and the deformation of the two in the vertical direction;

[0011] (2) The detection component transmits the data measured in step (1) to the control system, and the control system controls the opening and closing of the section switch and the separator switch according to the data analysis structure;

[0012] When any abnormality is detected in the temperature, pressure, gas composition, leakage liquid, and horizontal / vertical deformation of one or more segmented cavities and / or partitioned cavities, the control system controls the segmentation switch / dividing switch of the segmented cavity and / or partitioned cavity to close, sealing the segmented cavity and / or partitioned cavity and waiting for subsequent maintenance work;

[0013] (3) After the maintenance work in step (2) is completed, the detection component re-detects the corresponding data in step (1) and transmits it to the control system. After the control system determines that it is normal, the control system controls the section switch / separator switch closed in step (2) to open.

[0014] As a preferred embodiment of the present application, the segmented partitions are in contact with and cooperate with the outer tank body and the inner tank body respectively, and the segmented switch is linked to the detection component for control.

[0015] As a preferred embodiment of the present application, the separation switch can close or connect adjacent separation chambers; the separation switch is controlled in linkage with the detection component.

[0016] As a preferred embodiment of the present application, it further includes a reinforcement support, which is connected to the double-layer base and the tank body respectively.

[0017] As a preferred embodiment of the present application, the detection component includes multiple temperature sensors, multiple pressure sensors, multiple gas sensors and multiple liquid sensors; the multiple pressure sensors, multiple gas sensors and multiple liquid sensors are evenly distributed in the segmented cavity and the separation cavity.

[0018] As a preferred embodiment of the present application, the liquid sensor is arranged on the outer wall of the inner tank body and the upper surface of the lower base; the temperature sensor is arranged on the outer wall of the inner tank body and the lower surface of the upper base.

[0019] As a preferred embodiment of the present application, the upper base, the lower base and the partition wall are made of a high-strength metal material;

[0020] The cylinder wall of the inner tank body is composed of a low-temperature resistant layer, a thermal insulation layer and a first magnetic layer; the cylinder wall of the outer tank body is composed of a pressure-resistant layer and a second magnetic layer, the first magnetic layer and the second magnetic layer have the same magnetic properties, and there is the interlayer cavity between the first magnetic layer and the second magnetic layer.

[0021] As a preferred embodiment of the present application, the detection component also includes a deformation detection device, which includes a ranging sensor and a laser sensing component; the laser sensing component includes a transmitter and a receiver, and the transmitter and the receiver are arranged relative to each other on the top and bottom surfaces of the segmented partition in the vertical direction; the ranging sensor is arranged on the side wall of the inner tank body, and the ranging sensors are evenly arranged around the inner tank body.

[0022] As a preferred embodiment of the present application, it further includes a control system, which is connected to the detection component, the section switch and the disconnector respectively; the detection component, the section switch and the disconnector are interlocked and controlled by the control system.

[0023] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0024] The interlayer cavity between the inner and outer tank bodies in the present application is fully connected to the bottom cavity in the double-layer base. When the side wall or bottom wall of the inner tank body is deformed / cracked / leaked, it can be detected in time and an early warning can be issued by the detection components arranged inside the interlayer cavity and the bottom cavity, which is convenient for subsequent maintenance and repair work. The interlayer cavity in the present application has multiple segmented cavities, and the double-layer base has multiple partitioned cavities. Through the arrangement of the segmented cavities and the partitioned cavities, when a material leak occurs inside a segmented cavity or a partitioned cavity, the leakage loss can be reduced by isolating and sealing the segmented cavity and / or the partitioned cavity. It is also convenient to determine the leakage location and facilitate subsequent maintenance and repair. The detection component in the present application realizes automatic interlocking control through the control system, the segmented switch and the partitioning switch, thereby greatly improving the degree of automation of the entire isolation system, making it convenient for relevant staff to obtain tank body information and accident information in a timely manner, thereby facilitating the efficient and accurate formulation of corresponding response plans, and improving the efficiency and effectiveness of maintenance and accident repairs. Illustrations

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 This is a structural diagram of the automatic interlocking isolation system for double-layer tanks;

[0027] Figure 2 It is a structural diagram of the inner tank body, the outer tank body and the segmented partitions;

[0028] Figure 3 This is the control logic diagram of the double-layer tank automatic interlocking isolation system.

[0029] List of parts and reference numerals:

[0030] 1 storage tank body, 11 inner tank body, 111 low temperature resistant layer, 112 thermal insulation layer, 113 first magnetic layer, 12 outer tank body, 121 pressure resistant layer, 122 second magnetic layer, 13 segmented cavity, 131 segmented partition, 132 segmented switch, 14 reinforced support;

[0031] 21 upper base, 22 lower base, 23 partition chamber, 231 partition wall, 232 partition switch;

[0032] 3 detection components, 31 temperature sensor, 32 pressure sensor, 33 gas sensor, 34 liquid sensor, 35 laser sensor component, 351 transmitter, 352 receiver, 36 distance sensor;

[0033] 4. Control system. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0035] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] like Figure 1-3 As shown, the present application discloses a method for using a double-layer tank automatic interlocking isolation system, which includes a soil-covered storage tank body 1, the storage tank body 1 including an outer tank body 12 and an inner tank body 11 disposed within the outer tank body 12. Figure 1 As shown, in one example, a double-layer base is further included, which is arranged at the lower part of the storage tank body 1, and the interior of the double-layer base has a bottom cavity; an interlayer cavity is provided between the outer tank cylinder 12 and the inner tank cylinder 11, and the bottom cavity is connected to the interlayer cavity; a connecting switch is provided between the bottom cavity and the interlayer cavity, and a detection component 3 is provided inside the bottom cavity and the interlayer cavity, and the detection component 3 is linked to the connecting switch for control.

[0037] Further, refer to Figure 1As shown, vertically, the interlayer cavity is provided with a plurality of segmented cavities 13; segmented partitions 131 are provided between adjacent segmented cavities 13, and the segmented partitions 131 are in contact with and cooperate with the outer tank body 12 and the inner tank body 11, respectively, and are provided with segmented switches 132; horizontally, the bottom cavity is provided with a plurality of partition walls 231 extending horizontally; the double-layer base includes an upper base 21 and a lower base 22, and the upper base 21, the lower base 22, and the partition walls 231 surround a plurality of partition cavities 23, and the partition walls 231 are provided with partition switches 232, which can close or connect adjacent partition cavities 23. In a preferred example, the partition switches 232 and the segmented switches 132 are both electromagnetic disconnect switches, which have the advantages of rapid response, reliable sealing, and convenient control. It should be noted that the present application does not limit the specific types and structures of the separating switch 232 and the segmenting switch 132 , and they may adopt the above-mentioned example or other more different switch solutions.

[0038] At the same time, in the above solution, the segmented partition 131 can provide support horizontally between the outer tank body 12 and the inner tank body 11, and the partition wall 231 can provide support vertically between the upper base 21 and the lower base 22. This structure can not only create segmented cavities 13 and partitioned cavities 23, thereby facilitating the detection of rupture / leakage locations, but also improve the structural strength of the tank body 1 and the double-layer base, reducing the risk of tank deformation and the risk of base deformation and settlement.

[0039] Further, refer to Figure 1 A reinforcing support 14 is provided between the tank body 1 and the double-layer base. The reinforcing support 14 is provided at the lower part of the outer wall of the tank body 1, that is, the lower part of the outer wall of the outer tank cylinder 12, and is fixedly connected to the upper part of the double layer and the double-layer base, thereby playing a reinforcing and supporting role for the tank body 1. In a specific example, the reinforcing support 14 is a triangular reinforcing plate uniformly provided at the lower part of the outer wall of the outer tank cylinder 12 around the circumference of the outer tank cylinder 12. Taking into account that the pressure of the material in the tank on the tank body gradually increases from top to bottom, the use of such a triangular reinforcing plate can effectively adapt to the changes in the pressure of the material in the tank on the tank body, and play a better reinforcing and stabilizing effect. Of course, the above example is only a preferred example itself, and the structure of the reinforcing support 14 in this application is not limited to the above example.

[0040] Further, refer to Figure 2 and Figure 3As shown, the detection assembly 3 includes multiple temperature sensors 31, multiple pressure sensors 32, multiple gas sensors 33, and multiple liquid sensors 34; the multiple pressure sensors 32, multiple gas sensors 33, and multiple liquid sensors 34 are evenly distributed in the segmented cavity 13 and the partition cavity 23. As a preferred embodiment of the present application, the liquid sensor 34 is arranged on the outer wall of the inner tank body 11 and the upper surface of the lower base 22; the temperature sensor 31 is arranged on the outer wall of the inner tank body 11 and the lower surface of the upper base 21. The above-mentioned arrangement is conducive to quickly detecting leakage and temperature changes on the side walls and bottom wall of the inner tank body 11, and is also conducive to detecting pressure changes and gas composition changes inside the segmented cavity 13 and the partition cavity 23, thereby facilitating relevant staff to timely understand the working conditions of the entire storage tank. When problems occur, they can also promptly discover and quickly understand the source of the problem and monitor the development of the problem in real time, making it convenient to formulate targeted maintenance and repair plans and improve maintenance efficiency and maintenance effects.

[0041] As a preferred embodiment of the present application, the upper base 21, the lower base 22 and the partition wall 231 are made of a high-strength metal material; the wall of the inner tank body 11 is composed of a low-temperature resistant layer 111, a thermal insulation layer 112 and a first magnetic layer 113; the wall of the outer tank body 12 is composed of a pressure-resistant layer 121 and a second magnetic layer 122, the first magnetic layer 113 and the second magnetic layer 122 have the same magnetic properties, and there is an interlayer cavity between the first magnetic layer 113 and the second magnetic layer 122. In a preferred example, in a preferred implementation, the thermal insulation layer 112 includes a ceramic microbubble thermal insulation coating, the low-temperature resistant layer 111 is provided with a spiral groove, the ceramic microbubble thermal insulation coating is coated on the surface of the low-temperature resistant layer 111, and the first magnetic layer 113 is adhered to the surface of the thermal insulation layer 112. The low-temperature-resistant layer 111 is made of existing Ni steel and aluminum alloy, which have sufficient low-temperature toughness and strength. The outer tank is made of high-strength carbon steel, which is a state-of-the-art material. The thermal insulation layer 112 is made of ceramic microbubble thermal insulation coating, which has excellent thermal insulation properties. The spiral grooves in the thermal insulation layer 112 enhance the adhesion and adhesion of the coating, thereby improving the thermal insulation effect. The first magnetic layer 113 and the second magnetic layer 122 are made of neodymium iron boron permanent magnet material. Neodymium iron boron magnets, also known as "strong magnets" and "permanent magnets," will not demagnetize when properly stored, the surface coating is not damaged, and they are used at the specified temperature. They have a long service life and are suitable for use in the interlayer cavity involved in this application.

[0042] It should be noted here that the above example is only a preferred example of the present application. The structure of the inner tank body 11 and the outer tank body 12 and the material selection of each part in the present application are not limited to the above example. It can also be adaptively selected and adjusted according to the characteristics of the material actually stored in the tank.

[0043] Further, refer to Figure 2 and Figure 3 As shown, the detection assembly 3 also includes a deformation detection device, which includes a distance sensor 36 and a laser sensor assembly 35; the laser sensor assembly 35 includes a transmitter 351 and a receiver 352, which are arranged vertically relative to each other on the top and bottom surfaces of the segmented partition 131; the distance sensor 36 is arranged on the side wall of the inner tank body 11, and the distance sensors 36 are evenly arranged around the inner tank body 11; and a control system 4 is also included, which is respectively connected to the detection assembly 3, the segment switch 132 and the separator switch 232; the detection assembly 3, the segment switch 132 and the separator switch 232 are interlocked and controlled by the control system 4. In the above scheme, the deformation detection device can also monitor the surface shape of the outer tank body 12 and the inner tank body 11 in real time, so that when a certain part of the tank body is deformed, the deformed part can be discovered and located in time, which facilitates maintenance personnel to repair and maintain the deformation point in time. At the same time, the setting of control system 4 greatly improves the automation level of the entire isolation system, making it convenient for relevant staff to obtain tank information and accident information in a timely manner, thereby facilitating the efficient and accurate formulation of corresponding response plans and improving the efficiency and effectiveness of maintenance and accident repairs.

[0044] In actual application, when the temperature sensor 31, pressure sensor 32, gas sensor 33, and liquid sensor 34 in one or more segmented cavities 13 / partitioned cavities 23 detects that any of the temperature / pressure / gas composition and liquid composition data within the segmented cavities 13 / partitioned cavities 23 has changed beyond the specified safety range, and the distance sensor 36 and laser sensor assembly 35 in one or more segmented cavities 13 detect a change in the distance between the outer tank body 12 and the inner tank body 11 or a deformation in the vertical direction of the two, the control system 4 controls the segmentation switch 132 / partition switch 232 in the segmented cavity 13 / partitioned cavities 23 to close the segmented cavity 13 / partitioned cavities 23, thereby preventing further expansion of the leakage and facilitating subsequent inspection and maintenance. After the inspection and maintenance work is completed, the control system 4 controls the segmentation switch 132 / partition switch 232 in the segmented cavity 13 / partitioned cavities 23 that has the abnormality to open after the various detection data in the segmented cavity 13 / partitioned cavities 23 have returned to normal.

[0045] The technical solutions protected by the present invention are not limited to the above-described embodiments. It should be noted that the combination of the technical solutions of any one embodiment with the technical solutions of one or more other embodiments falls within the scope of protection of the present invention. Although the present invention has been described in detail above using general descriptions and specific embodiments, it is obvious to those skilled in the art that modifications or improvements can be made based on the present invention. Therefore, such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A method for using a double-layer tank automatic interlocking isolation system, characterized in that: The automatic interlocking isolation system of a double-layer tank comprises a soil-covered storage tank body, the storage tank body comprising an outer tank cylinder and an inner tank cylinder arranged in the outer tank cylinder, and also comprises a double-layer base, the double-layer base is arranged at the lower part of the storage tank body, the interior of the double-layer base has a bottom cavity; an interlayer cavity is provided between the outer tank cylinder and the inner tank cylinder, the bottom cavity is connected to the interlayer cavity; a communication switch is provided between the bottom cavity and the interlayer cavity, and a detection component is provided inside the bottom cavity and the interlayer cavity, and the detection component is controlled in linkage with the communication switch; in the vertical direction, the interlayer cavity is provided with a plurality of segmented cavities; segmented partitions are provided between adjacent segmented cavities, the segmented partitions are provided with segmented switches, and in the horizontal direction, the bottom cavity is provided with a plurality of partition walls extending in the horizontal direction; the double-layer base comprises an upper base and a lower base, the upper base, the lower base and the partition walls surround a plurality of partition cavities, and the partition walls are provided with a partition switch; The main steps include: (1) The detection component continuously and in real time monitors the changes in temperature, pressure, gas composition, and the presence of liquid leakage inside the interlayer cavity and the bottom cavity, and simultaneously monitors the changes in the horizontal distance between the inner tank body and the outer tank body and the deformation of the two in the vertical direction; (2) The detection component transmits the data measured in step (1) to the control system, and the control system controls the opening and closing of the section switch and the separator switch according to the data analysis structure; When any abnormality is detected in the temperature, pressure, gas composition, leakage liquid, and horizontal / vertical deformation of one or more segmented cavities and / or partitioned cavities, the control system controls the segmentation switch / dividing switch of the segmented cavity and / or partitioned cavity to close, sealing the segmented cavity and / or partitioned cavity and waiting for subsequent maintenance work; (3) After the maintenance work in step (2) is completed, the detection component re-detects the corresponding data in step (1) and transmits it to the control system. After the control system determines that it is normal, the control system controls the section switch / separator switch closed in step (2) to open.

2. The method for using the double-layer tank automatic interlocking isolation system according to claim 1, characterized in that: The segmented partitions are in contact with and cooperate with the outer tank body and the inner tank body respectively, and the segmented switch is linked with the detection component for control.

3. The method for using the automatic interlocking isolation system for double-layer tanks according to claim 2, characterized in that: The separation switch can close or connect the adjacent separation chambers; the separation switch is linked to the detection component for control.

4. The method for using the automatic interlocking isolation system for double-layer tanks according to claim 3, characterized in that: It also includes a reinforcement support, which is connected to the double-layer base and the tank body respectively.

5. The method for using the automatic interlocking isolation system for double-layer tanks according to claim 3, characterized in that: The detection component includes multiple temperature sensors, multiple pressure sensors, multiple gas sensors and multiple liquid sensors; the multiple pressure sensors, multiple gas sensors and multiple liquid sensors are evenly distributed in the segmented cavity and the partition cavity.

6. The method for using the automatic interlocking isolation system for double-layer tanks according to claim 5, characterized in that: The liquid sensor is arranged on the outer wall of the inner tank body and the upper surface of the lower base; the temperature sensor is arranged on the outer wall of the inner tank body and the lower surface of the upper base.

7. The method for using the automatic interlocking isolation system for double-layer tanks according to claim 3, characterized in that: The upper base, the lower base and the partition wall are made of high-strength metal material; The cylinder wall of the inner tank body is composed of a low-temperature resistant layer, a thermal insulation layer and a first magnetic layer; the cylinder wall of the outer tank body is composed of a pressure-resistant layer and a second magnetic layer, the first magnetic layer and the second magnetic layer have the same magnetic properties, and there is the interlayer cavity between the first magnetic layer and the second magnetic layer.

8. The method for using the automatic interlocking isolation system for double-layer tanks according to claim 7, characterized in that: The detection component also includes a deformation detection device, which includes a ranging sensor and a laser sensing component; the laser sensing component includes a transmitter and a receiver, and the transmitter and the receiver are arranged relative to each other on the top and bottom surfaces of the segmented partition in the vertical direction; the ranging sensor is arranged on the side wall of the inner tank body, and the ranging sensors are evenly arranged around the inner tank body.

9. The method for using the automatic interlocking isolation system for double-layer tanks according to claim 8, characterized in that: It also includes a control system, which is connected to the detection component, the section switch and the separation switch respectively; the detection component, the section switch and the separation switch are interlockingly controlled by the control system.

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