Apparatus for inhibiting fire boiling spatter of crude oil storage tanks and method of use

Abstract

The application discloses a device for inhibiting boiling overflow spatter of crude oil storage tank fire and a use method, mainly comprising a heat exchange condensing system, a buoyancy lifting system, a monitoring system and an intelligent control system. The heat exchange condensing system comprises a heat exchanger, a condensing medium, a refrigeration module, a power module and a condensing pipeline, and is used for cooling a water cushion layer at an oil-water interface; the buoyancy device in the buoyancy lifting system is fixed below the heat exchanger, and the heat exchanger position is adjusted through buoyancy; the monitoring system comprises a liquid density module and a temperature monitoring module, is fixed on the heat exchanger, and collects liquid density and temperature information of the surrounding area; the intelligent control system is used for acquiring the density information collected by the monitoring system, controlling the buoyancy device to move the heat exchanger to the oil-water interface, continuously cooling, and judging a boiling overflow spatter risk according to the temperature information at the position. The device can effectively avoid boiling overflow spatter caused by boiling of the water cushion layer at the oil-water interface, and prevent expansion of a crude oil storage tank fire accident.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tank fire extinguishing, and particularly relates to a device for inhibiting boiling overflow and splashing of crude oil tank fire and a use method. BACKGROUND

[0002] With the rapid development of the petrochemical industry, the demand for crude oil in various countries is still growing rapidly. Compared with other storage methods, storage tanks have the characteristics of economic safety, large storage capacity, etc. and are widely used in liquid fuel storage. With the need for energy strategic reserves, the scale and capacity of storage tanks will gradually develop towards large-scale, and China has built hundreds of 100,000 cubic large-scale storage tanks. However, with the rapid increase in oil storage capacity, the risk of storage tank fire has also increased. When a crude oil storage tank fire occurs, the oil layer is quickly heated by the feedback of flame radiation, and the heat is also transferred to the water cushion layer, i.e. the heat wave is transmitted downward. When the water cushion layer at the oil-water interface reaches the boiling point after absorbing heat, a large amount of water vapor is generated and overflowed upward, which will drive the oil outward to splash and cause boiling overflow and splashing, seriously threatening the safety of rescue personnel.

[0003] The traditional prevention and control measures for inhibiting boiling overflow and splashing of crude oil storage tank include cooling tank wall, tank bottom drainage, setting up an annular water barrier and using anti-boiling stones to eliminate water cushion layer boiling overflow. However, the above measures are difficult to implement and have very low control efficiency, and it is difficult to effectively inhibit boiling overflow and splashing. At present, research and development of devices for inhibiting boiling overflow and splashing of storage tank fire, “A device for preventing boiling overflow and splashing phenomenon of crude oil storage tank due to combustion” (Authorized announcement number: CN 203997625U), the device adds a microbead releaser inside the storage tank, and releases hollow heat-insulating ceramic microbeads to the oil-water interface after the occurrence of storage tank fire, forming a heat-blocking layer to prevent boiling overflow and splashing phenomenon of storage tank fire. “Anti-boiling overflow control device for crude oil storage tank” (Authorized announcement number: CN 109896185B), the patent discloses a device that realizes timely removal of the water cushion layer after the occurrence of storage tank fire by intelligent analysis of key parameter information and intelligent control of the drainage valve, which can eliminate the influence of heat wave effect and timely inhibit boiling overflow and splashing of crude oil storage tank, thereby avoiding the expansion of crude oil storage tank fire accidents.

[0004] Through the research and analysis of the above-mentioned patent and prior art, it can be known that the prior art equipment mainly blocks the heat wave to the water cushion layer, thereby eliminating the boiling overflow spatter of the water layer in the storage tank. However, the existing device fails to solve the following problems: on the one hand, the prior art lacks a device for continuous cooling, and cannot completely block the heat transfer between oil and water, but only delays the boiling overflow spatter, and cannot completely eliminate the boiling overflow spatter phenomenon; on the other hand, the drainage is used to reduce the risk of boiling overflow spatter, but the drainage efficiency is low, the high-temperature water layer at the oil-water interface cannot be discharged in time, the inhibition effect of boiling overflow spatter is not strong, and at the same time, the drainage behavior will affect the fire combustion behavior of the storage tank, forming a more complex fire scene. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a device for inhibiting boiling overflow spatter of crude oil storage tank fire. After the occurrence of crude oil storage tank fire, the device can effectively cool the water cushion layer at the oil-water interface, prevent the water layer from boiling, thereby inhibiting the boiling overflow spatter during the combustion of the crude oil storage tank, and avoiding the expansion of the storage tank fire accident.

[0006] The present application also aims to propose a use method of the device for inhibiting boiling overflow spatter of crude oil storage tank fire.

[0007] According to the device for inhibiting boiling overflow spatter of crude oil storage tank fire, the heat exchange condensing system includes a heat exchanger, a condensing medium, a refrigeration module, a power module and a condensing pipeline, which is used to cool the water cushion layer near the oil-water interface and prevent the water from boiling to form a large amount of steam; the buoyancy lifting system includes a buoyancy device, a gas storage module, a flow controller, a gas supply pipeline and a pressure relief valve; the monitoring system includes a liquid density module and a temperature monitoring module, which collects the liquid density and temperature information of the surrounding area; the intelligent control system is used to obtain the density information collected by the monitoring system, control the buoyancy device to move the heat exchanger to the oil-water interface, and continuously cool the water cushion layer, and judge the boiling overflow spatter risk according to the temperature information at the position.

[0008] According to the device for inhibiting boiling overflow spatter of crude oil storage tank fire, the heat exchanger in the heat exchange condensing system is arranged in the storage tank, which is used to cool the water cushion layer; the heat exchange condensing system includes a plurality of heat exchangers, which are evenly distributed in the storage tank, and the specific number and size of the heat exchangers are determined according to the capacity of the storage tank.

[0009] According to the device for inhibiting boiling overflow spatter of crude oil tank fire, the refrigeration module is arranged outside the tank and is used for cooling the condensing medium; the condensing pipeline connects the heat exchanger, the refrigeration module and the power module in sequence to form a closed loop; the heat exchanger, the refrigeration module and the condensing pipeline are filled with the condensing medium, the condensing medium has good heat transfer performance, low viscosity physical properties, can absorb heat transferred downward from the oil layer and is rapidly cooled in the refrigeration module; and the power module is used for providing circulating power to drive the condensing medium in the closed loop to circulate.

[0010] Optionally, the condensing medium can be low-temperature nitrogen or condensing liquid, can effectively absorb heat at the oil-water interface and can be rapidly cooled by the refrigeration module, which is not limited here.

[0011] Advantageously, the condensing pipeline can be a telescopic hose, can freely stretch and shrink within the floating range of the heat exchanger, and the condensing pipeline does not affect the lifting of the heat exchanger in the tank, which is not limited here.

[0012] According to the device for inhibiting boiling overflow spatter of crude oil tank fire, the buoyancy device in the buoyancy lifting system is fixed below the heat exchanger, is hollow inside, is slightly larger than the heat exchanger, and is connected with the gas supply pipeline at both ends and is used for containing gas to drive the heat exchanger to float in the water cushion layer of the tank; the buoyancy device is made of a material with good air tightness, corrosion resistance and waterproof performance; in daily operation and maintenance, the buoyancy device is free of gas inside; after the tank fire occurs, the buoyancy device is rapidly floated by filling gas and is suspended to the oil-water interface under the control of the intelligent control system.

[0013] Optionally, the buoyancy device can be made of waterproof nylon and has strong air tightness and waterproof performance.

[0014] According to the device for inhibiting boiling overflow spatter of crude oil tank fire, the gas storage module is arranged outside the tank and is used for supplying gas to the buoyancy device; the flow controller is arranged on the gas storage module, is connected with the buoyancy device through the gas supply pipeline and is used for controlling the gas supply flow; the pressure relief valve is arranged outside the tank and is connected with the buoyancy device through the gas supply pipeline, the pressure relief valve is used for releasing gas inside the buoyancy lifting system to make the buoyancy device drive the heat exchanger to sink; the pressure relief valve is controlled by the intelligent control system, the pressure relief valve always keeps closed in daily operation and maintenance and when the tank fire occurs; after the tank fire is extinguished, the pressure relief valve is opened to release the gas inside the buoyancy device to make the heat exchanger sink to the bottom of the tank.

[0015] Optionally, the gas storage module can be an air compressor or a nitrogen cylinder, which is not specifically limited here.

[0016] Advantageously, the gas supply pipeline can be an optional telescopic hose, which can be freely telescoped within the floating range of the buoyancy device, and the gas supply pipeline does not affect the lifting of the heat exchanger inside the storage tank, which is not specifically limited here.

[0017] According to the device for inhibiting boiling overflow and splashing of crude oil storage tank fire, the monitoring system comprises a liquid density module and a temperature monitoring module; the liquid density module and the temperature monitoring module are arranged on the heat exchanger, the liquid density module is used for collecting liquid density information at the position of the liquid density module in real time, and the temperature monitoring module is used for collecting temperature information at the oil-water interface.

[0018] Advantageously, the liquid density module and the temperature monitoring module can remotely and wirelessly transmit signals to the intelligent control system, avoiding the increase of lines inside the storage tank and causing difficulty in maintenance after line damage.

[0019] According to the device for inhibiting boiling overflow and splashing of crude oil storage tank fire, the intelligent control system controls the operation of the heat exchange and condensation system, and then cools the oil-water interface and blocks the transmission of heat waves to the water cushion; the intelligent control system is also used for controlling the flow controller in the buoyancy lifting system to adjust the gas flow supplied to the buoyancy device, and then controlling the suspension height of the heat exchanger; the intelligent control system is also used for controlling the opening and closing of the pressure relief valve for releasing the gas inside the buoyancy device; the intelligent control system is used for acquiring the liquid temperature information data collected by the temperature monitoring module; and the intelligent control system is used for acquiring the liquid density information at the position of the liquid density module collected by the liquid density module.

[0020] According to the device for inhibiting boiling overflow and splashing of crude oil storage tank fire, the intelligent control system can determine the position of the heat exchanger according to the liquid density information collected by the liquid density module, and then gradually control the buoyancy device to float upwards to drive the heat exchanger to the oil-water interface; when the intelligent control system monitors that the liquid density suddenly changes to the density of oil products, the intelligent control system controls the buoyancy lifting system to stop supplying gas, so that the heat exchanger is suspended at the height of the oil-water interface; after the intelligent control system acquires the oil-water interface temperature information data collected by the temperature monitoring module in the monitoring system, the intelligent control system combines the type of oil products stored in the storage tank, and then determines the risk size of boiling overflow and splashing caused by storage tank fire.

[0021] According to the use method for inhibiting boiling overflow spatter of crude oil storage tank fire of the embodiment of the present application, the following steps are included: after the fire occurs, the intelligent control system starts the refrigeration module and the power module, so that the internal condensing medium is circulated and cooled in the closed loop; the intelligent control system controls the flow controller to start, adjusts the gas supply flow, and supplies gas to the buoyancy device, so that the buoyancy device drives the heat exchanger to float up quickly; the intelligent control system obtains the liquid density information of the liquid density module, and then judges the position of the heat exchanger; after the intelligent control system judges that the heat exchanger floats to the oil-water interface, the gas supply is stopped.

[0022] According to the use method for the device for inhibiting boiling overflow spatter of crude oil storage tank fire of the embodiment of the present application, by controlling the heat exchanger to float to the oil-water interface, absorbing the heat wave continuously transmitted downward from the oil layer, and continuously cooling the water cushion layer, boiling overflow spatter of the crude oil storage tank during combustion is prevented.

[0023] Additional aspects and advantages of the present application will become apparent in the description that follows, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood by considering the following detailed description, including the accompanying drawings, in which:

[0025] Figure 1 The device for inhibiting boiling overflow spatter of crude oil storage tank fire of an embodiment of the present application is shown in the overall structure schematic diagram.

[0026] Figure 2 The arrangement schematic diagram of the heat exchanger and the adjacent modules of an embodiment of the present application is shown.

[0027] Figure 3 The device for inhibiting boiling overflow spatter of crude oil storage tank fire of an embodiment of the present application is shown in the schematic diagram during daily operation and maintenance.

[0028] Figure 4 The device for inhibiting boiling overflow spatter of crude oil storage tank fire of an embodiment of the present application is shown in the schematic diagram of boiling inhibition operation when the storage tank fire occurs.

[0029] In the present application, all the drawings are schematic drawings, which are only used to illustrate the principles of the present application, and are not drawn according to the actual proportion.

[0030] Reference signs:

[0031] Heat exchange condensing system 100, heat exchanger 110, condensing medium 120, refrigeration module 130, power module 140, condensing pipeline 150,

[0032] buoyancy lifting system 200, buoyancy device 210, gas storage module 220, flow controller 230, gas supply pipeline 240, pressure relief valve 250,

[0033] monitoring system 300, liquid density module 310, temperature monitoring module 320,

[0034] intelligent control system 400,

[0035] storage tank 500, water cushion 510, oil layer 520. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like designations indicate the same or like elements or components throughout the drawings. The embodiments described below are exemplary in nature, only for the purpose of explanation of the present application, and are not to be construed as limiting the present application.

[0037] In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] A device for suppressing boiling overflow spatter of crude oil storage tank fire is described below with reference to the accompanying drawings.

[0039] A device for suppressing boiling overflow spatter of crude oil storage tank fire, in combination with the drawings, comprises a heat exchange condensing system 100, a buoyancy lifting system 200, a monitoring system 300, and an intelligent control system 400.

[0040] Among them, as Figure 1 , Figure 2As shown, the heat exchange condensing system 100 includes a heat exchanger 110, a condensing medium 120, a refrigeration module 130, a power module 140 and a condensing pipeline 150, the heat exchanger 110 in the heat exchange condensing system 100 is arranged inside the storage tank 500 for cooling the water cushion 510; the heat exchange condensing system 100 includes four heat exchangers 110, the four heat exchangers 110 are evenly distributed inside the storage tank 500; the refrigeration module 130 is arranged outside the storage tank 500 for cooling the condensing medium 120; the condensing pipeline 150 connects the heat exchanger 110, the refrigeration module 130 and the power module 140 in sequence to form a closed loop; the inside of the heat exchanger 110, the refrigeration module 130 and the condensing pipeline 150 is filled with the condensing medium 120, the condensing medium 120 has good heat transfer performance, low viscosity physical properties, can absorb the heat transferred downward by the oil layer 520, and is quickly cooled in the refrigeration module 130; the power module 140 is used for providing circulating power to drive the condensing medium 120 in the closed loop to circulate.

[0041] Optionally, the condensing medium 120 is a condensing liquid, which can effectively absorb the heat at the oil-water interface and can be quickly cooled by the refrigeration module 130.

[0042] Advantageously, the condensing pipeline 150 is a telescopic hose, which can freely stretch and retract within the floating range of the heat exchanger 110, and the condensing pipeline 150 does not affect the lifting of the heat exchanger 110 inside the storage tank 500.

[0043] In combination with Figure 1 , Figure 3 and Figure 4As shown, the buoyancy lifting system 200 includes a buoyancy device 210, a gas storage module 220, a flow controller 230, a gas supply pipeline 240 and a pressure relief valve 250; the buoyancy device 210 in the buoyancy lifting system 200 is fixed below the heat exchanger 110, is hollow inside, is slightly larger than the heat exchanger 110, and is connected with the gas supply pipeline 240 at both ends, for loading gas to drive the heat exchanger 110 to float in the water cushion layer 510 of the storage tank 500; the buoyancy device 210 is a material with good air tightness, corrosion resistance and waterproof performance; in daily operation and maintenance, the buoyancy device 210 is internally gas-free; after the storage tank fire occurs, the buoyancy device 210 is rapidly floated by filling gas, and is suspended to the oil-water interface under the control of the intelligent control system; the gas storage module 220 is arranged outside the storage tank 500, for supplying gas to the buoyancy device 210; the flow controller 230 is arranged on the gas storage module 220, is connected with the buoyancy device 210 through the gas supply pipeline 240, and is used for controlling the gas supply flow; the pressure relief valve 250 is arranged outside the storage tank 500, is connected with the buoyancy device 210 through the gas supply pipeline 240, and the pressure relief valve 250 is used for releasing the gas inside the buoyancy lifting system 200, so that the buoyancy device 210 drives the heat exchanger 110 to sink; the pressure relief valve 250 is controlled by the intelligent control system, and the pressure relief valve 250 always maintains a closed state in the daily operation and maintenance process and when the storage tank fire occurs; after the storage tank fire is extinguished, the pressure relief valve 250 is opened, the gas inside the buoyancy device 210 is released, and the heat exchanger 110 is sunk to the bottom of the storage tank 500.

[0044] Optionally, the buoyancy device 210 is made of waterproof nylon, has strong air tightness and waterproof performance.

[0045] Optionally, the gas storage module 220 is an air compressor, for supplying air to the buoyancy device 210.

[0046] Advantageously, the gas supply pipeline 240 is a telescopic hose, which can freely stretch and contract within the floating range of the buoyancy device 210, and the gas supply pipeline 240 does not affect the lifting of the heat exchanger 110 inside the storage tank 500, which is not limited specifically here.

[0047] Continuing to combine Figure 1 , Figure 3 and Figure 4 As shown, the monitoring system 300 includes a liquid density module 310 and a temperature monitoring module 320, for collecting liquid density and temperature information of the surrounding area; the liquid density module 310 and the temperature monitoring module 320 are arranged on the heat exchanger 110, the liquid density module 310 is used to collect the liquid density information of the position where the liquid density module 310 is located in real time, and the temperature monitoring module 320 is used to collect the temperature information at the oil-water interface.

[0048] Advantageously, the liquid density module 310 and the temperature monitoring module 320 can remotely and wirelessly transmit signals to the intelligent control system 400, avoiding the addition of lines inside the storage tank 500, which is difficult to repair after the line is damaged.

[0049] In combination with the drawings, the intelligent control system 400 controls the operation of the heat exchange condensing system 100, thereby cooling the oil-water interface and blocking the transmission of heat waves to the water cushion 510; the intelligent control system 400 is also used to control the flow controller 230 in the buoyancy lifting system 200 to adjust the gas flow supplied to the buoyancy device 210, thereby controlling the suspension height of the heat exchanger 110; the intelligent control system 400 is also used to control the opening and closing of the pressure relief valve 250 for releasing the gas inside the buoyancy device 210; the intelligent control system 400 is used to obtain the liquid temperature information data collected by the temperature monitoring module 320; the intelligent control system 400 is used to obtain the liquid density information of the position where the liquid density module 310 is located; the intelligent control system can determine the position of the heat exchanger 110 according to the liquid density information collected by the liquid density module 310, and then gradually control the buoyancy device 210 to float, driving the heat exchanger 110 to reach the oil-water interface; when the intelligent control system monitors that the liquid density suddenly changes to the density of oil products, the gas supply of the buoyancy lifting system 200 is stopped, so that the heat exchanger 110 is suspended at the height of the oil-water interface; after the intelligent control system obtains the oil-water interface temperature information data collected by the temperature monitoring module 320 in the monitoring system 300, the type of oil stored in the storage tank 500 is combined, and then the risk size of the boiling overflow and splashing of the storage tank fire is determined.

[0050] The use method for inhibiting the boiling overflow and splashing of the crude oil storage tank fire according to the embodiment of the present application is described below with reference to the drawings in the specification.

[0051] The use method for inhibiting the boiling overflow and splashing of the crude oil storage tank fire according to the embodiment of the present application comprises the following steps:

[0052] Step S1, after the fire occurs, the intelligent control system starts the refrigeration module 130 and the power module 140, so that the internal condensing medium 120 circulates and cools in the closed loop;

[0053] Step S2, the intelligent control system controls the flow controller 230 to start, adjusts the gas flow, and supplies gas to the buoyancy device 210, so that the buoyancy device 210 drives the heat exchanger 110 to quickly float up;

[0054] Step S3, the intelligent control system obtains the liquid density information of the liquid density module, and then determines the position of the heat exchanger;

[0055] Step S4, after the intelligent control system determines that the heat exchanger 110 floats to the oil-water interface, the gas supply is stopped.

[0056] The use method of the device for inhibiting boiling overflow spatter of crude oil storage tank fire according to the embodiment of the application, by controlling the four heat exchangers 110 to rise to the oil-water interface, cooling the water cushion layer near the heat exchanger 110, effectively blocking the downward transmission of heat waves, thereby realizing the inhibition of boiling overflow spatter phenomenon, and being beneficial to the rescue of the storage tank fire scene.

[0057] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, or electrical connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] Figure 1 、 Figure 3 and Figure 4 Four heat exchangers 110 are shown for illustrative purposes, but those skilled in the art will obviously understand that this scheme can be applied to other numbers of heat exchangers 110 after reading the above technical solutions, which also falls within the protection scope of the present application.

[0059] The device for inhibiting boiling overflow spatter of crude oil storage tank fire and the use method according to the embodiment of the application are known to those skilled in the art in terms of storage tank structure, heat transfer basis, and buoyancy theory, which will not be described in detail here.

[0060] In the description of the present application, the description referring to the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A device for inhibiting fire boiling and spatter of a crude oil storage tank, characterized by, The device is composed of a heat exchange condensing system, a buoyancy lifting system, a monitoring system and an intelligent control system, wherein, The heat exchange condensing system comprises a heat exchanger, a condensing medium, a refrigeration module, a power module and a condensing pipeline, which is used to cool the water cushion near the oil-water interface to prevent the water from boiling to form a large amount of steam; the heat exchanger is arranged inside the storage tank to cool the water cushion; the refrigeration module is arranged outside the storage tank to cool the condensing medium; the condensing pipeline connects the heat exchanger, the refrigeration module and the power module in sequence to form a closed loop; the heat exchanger, the refrigeration module and the condensing pipeline are filled with the condensing medium; the power module is used to provide circulating power to drive the condensing medium in the closed loop to circulate; The buoyancy lifting system comprises a buoyancy device, a gas storage module, a flow controller, a gas supply pipeline and a pressure relief valve; the buoyancy device is fixed below the heat exchanger, hollow inside, slightly larger than the heat exchanger, and connected with the gas supply pipeline at both ends, which is used to contain gas to drive the heat exchanger to float in the water cushion of the storage tank; the gas storage module is arranged outside the storage tank to supply gas to the buoyancy device; the flow controller is arranged on the gas storage module and connected with the buoyancy device through the gas supply pipeline to control the gas flow; the pressure relief valve is arranged outside the storage tank and connected with the buoyancy device through the gas supply pipeline, which is used to release the gas inside the buoyancy lifting system to make the buoyancy device sink with the heat exchanger; The monitoring system comprises a liquid density module and a temperature monitoring module; the liquid density module and the temperature monitoring module are arranged on the heat exchanger; the liquid density module is used to collect the liquid density information of the position where the liquid density module is located in real time; the temperature monitoring module is used to collect the temperature information of the oil-water interface; The intelligent control system controls the operation of the heat exchange condensing system to cool the oil-water interface and block the heat wave from transferring to the water cushion; the intelligent control system is also used to control the flow controller in the buoyancy lifting system to adjust the gas flow into the buoyancy device to control the suspension height of the heat exchanger; the intelligent control system is also used to control the opening and closing of the pressure relief valve to release the gas inside the buoyancy device; the intelligent control system is used to obtain the liquid temperature information collected by the temperature monitoring module; the intelligent control system is used to obtain the liquid density information of the position where the liquid density module is located collected by the liquid density module.

2. A device for inhibiting fire boiling and splashing of crude oil from a storage tank as claimed in claim 1 wherein, The heat exchange condensing system comprises a plurality of heat exchangers, which are evenly distributed inside the storage tank; the specific number and size of the heat exchangers are determined according to the capacity of the storage tank.

3. A device for inhibiting fire boiling and splashing of crude oil in a storage tank as claimed in claim 1 wherein, The condensing medium in the heat exchange condensing system has good heat transfer performance, low viscosity physical properties, can absorb the heat transferred downward from the oil layer, and is quickly cooled in the refrigeration module.

4. A device for inhibiting fire boiling and splashing of crude oil in a storage tank as claimed in claim 1 wherein, The buoyancy device is a material with good air tightness, corrosion resistance and waterproof performance; in daily operation and maintenance, the buoyancy device is internally free of gas; after the occurrence of a fire in the storage tank, the buoyancy device is filled with gas, rapidly floats up under the action of buoyancy, and is suspended at the oil-water interface under the control of the intelligent control system.

5. A device for inhibiting fire boiling and splashing of crude oil in a storage tank as claimed in claim 1 wherein, The intelligent control system can determine the position of the heat exchanger according to the liquid density information collected by the liquid density module, and then gradually control the buoyancy device to float up and drive the heat exchanger to the oil-water interface; when the intelligent control system monitors that the liquid density suddenly changes to the density of oil products, the intelligent control system controls the buoyancy lifting system to stop supplying gas, so that the heat exchanger is suspended at the height of the oil-water interface.

6. A device for inhibiting fire boiling and splashing of crude oil in a storage tank as claimed in claim 1 wherein, After the intelligent control system obtains the temperature information data of the oil-water interface collected by the temperature monitoring module in the monitoring system, the intelligent control system combines the type of oil products stored in the storage tank, and then determines the risk size of boiling and spattering caused by the occurrence of a fire in the storage tank.

7. A device for inhibiting fire boiling and splashing of crude oil from a storage tank as claimed in claim 1 wherein, The pressure relief valve is controlled by the intelligent control system, and the pressure relief valve is always in a closed state during daily operation and maintenance and when a fire occurs in the storage tank; after the fire in the storage tank is extinguished, the pressure relief valve is opened to release the gas in the buoyancy device, so that the heat exchanger sinks to the bottom of the storage tank.

8. A method of use of a device for inhibiting boiling over and splashing in case of fire of a crude oil storage tank, for a device for inhibiting boiling over and splashing in case of fire of a crude oil storage tank according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: Step S1, after the occurrence of a fire, the intelligent control system starts the refrigeration module and the power module, so that the internal condensing medium circulates and cools in a closed loop; Step S2, the intelligent control system controls the flow controller to be opened, adjusts the gas supply flow, and supplies gas to the buoyancy device, so that the buoyancy device drives the heat exchanger to rapidly float up; Step S3, the intelligent control system obtains the liquid density information of the liquid density module, and then determines the position of the heat exchanger; Step S4, after the intelligent control system determines that the heat exchanger has floated to the oil-water interface, the intelligent control system stops supplying gas.

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