Overground storage tank of oil depot

Abstract

The utility model provides an oil depot overground storage tank which is a steel vertical metal inner floating roof storage tank and comprises a tank body and an assembly type stainless steel full-liquid-receiving inner floating disc, a surrounding spiral ladder is arranged on the outer side of the tank body, an explosion-proof type human body touch static electricity eliminating device is arranged below the spiral ladder, a flame arrester is arranged in the center of the top of the storage tank, and the flame arrester is arranged in the middle of the top of the storage tank. A plurality of vent holes, a plurality of vent holes, a plurality of liquid level detection devices, a wind indicator, an explosion-proof illuminating lamp, an explosion-proof human body touch static electricity elimination device and a liquid level alarm device are arranged on the outer side edge of the top. The inner floating disc effectively isolates oil from air, oil volatilization is reduced, the telescopic supporting legs can stretch and retract up and down after falling to the bottom, it is guaranteed that oil is emitted as much as possible, and meanwhile explosive oil gas space is prevented from being formed. A flame arrester and a wind indicator are integrated on the tank top, the safety protection capacity is enhanced, and the wind direction can be automatically sensed; the tank body is provided with the combination of the vent holes and the air holes, the pressure balance in the storage tank is adjusted in time through the vent holes and the air holes, and the storage tank is prevented from pressure building or negative pressure suction shrinking.

Description

[TECHNICAL FIELD]

[0001] The utility model relates to the field of oil depot storage tank, especially relates to an oil depot ground storage tank. [BACKGROUND]

[0002] The finished oil in the oil depot needs to be stored in the storage tank, wherein the above-ground storage tank is one of the storage modes used more frequently, the inner floating roof storage tank is provided with a shaft on the inner axial line, and an inner floating roof made of special light material is arranged in the inner shaft, which can move up and down with the increase or decrease of the oil in the inner tank, thereby covering the oil and reducing the evaporation loss, the existing storage tank has problems such as inconvenience and safety in the structural design, for example, the patent CN2020221669153 mentions an inner floating roof storage tank, different connection ports are arranged above the inner floating roof on the top of the tank body, the tank body bottom is not designed with a convenient manhole, the flame arrester and various components are not reasonably installed, and different oil products have different oil gas evaporation loss, and it is not convenient to clean the residual oil in the tank when the tank is emptied. In addition, the liquid level alarm device of the existing storage tank is arranged on the outer wall of the storage tank, but due to the lack of inspection and maintenance work platform, the daily maintenance inspection and test work cannot be normally carried out. The inner floating roof support foot of the existing storage tank is a hard support with a fixed length of 1.6 meters, and when the storage tank is in the receiving and sending operation, especially when all the stored oil needs to be sent out, the floating roof often falls to the bottom, causing oil gas to gather under the floating roof, thereby affecting the safety of the receiving and sending operation of the storage tank. Sometimes, work needs to be carried out on the top of the storage tank at night, but there is a lack of fixed lighting facilities, and a portable anti-explosion flashlight often needs to be carried manually, which is not conducive to the night work. Only one set of liquid level detection system is arranged on the top of the tank for detection, the tank bottom is displayed locally, and the central control room is remotely monitored. Once the liquid level detection system fails or malfunctions, important parameter liquid level information cannot be seen, and the monitoring cannot be compared and judged quickly, and the reliability, effectiveness and independence are insufficient. The bottom of the storage tank is in a hidden state, and once corrosion perforation or fatigue rupture occurs, the leaked oil is difficult to be discovered in time. There is a one-way gate valve near the storage tank, which can only enter but cannot exit, and manual opening is required for daily oil discharge, which is laborious and low in efficiency, and the gate valve gate plate often falls after being opened and closed, thereby affecting the safety of the oil receiving and sending operation, and the maintenance is difficult and the operation risk is high due to the oil stored in the storage tank. The storage tank lacks airtight sampling devices, manual operation is required on the tank top metering hole, and a sampler is used for sampling, the sample is more after sampling, the labor intensity is large, and the operator is easy to be exposed to oil and cause poisoning and fire risk. [SUMMARY]

[0003] The utility model aims at providing an oil depot above-ground storage tank, solving the design problem of the existing ground oil tank, and providing a new above-ground storage tank design.

[0004] In order to solve the above technical problems, the utility model adopts the following scheme:

[0005] An oil depot aboveground storage tank, the storage tank is a steel vertical metal inner floating roof storage tank, comprising a tank body and an assembled stainless steel full-liquid inner floating disc, a surrounding disc ladder is arranged outside the tank body, an explosion-proof human touch static electricity elimination device is arranged below the disc ladder, which is used for eliminating human static electricity before touching the disc ladder, a flame arrester is arranged at the center of the top of the storage tank, a plurality of ventilation holes, a plurality of air vents, a plurality of liquid level detection devices, a wind vane, an explosion-proof lighting lamp, an explosion-proof human touch static electricity elimination device and a liquid level alarm device are arranged at the outer edge of the top of the storage tank; the ventilation holes are five, which are uniformly distributed at the center of the top; one air vent is arranged on each side of the air vent, and two sets of liquid level detection devices and a wind vane are arranged at the top side edge of the disc ladder.

[0006] Further, anti-slip steps and guardrails are arranged around the top of the storage tank, and two anti-slip steps and guardrails are arranged from the periphery of the top of the storage tank to the center of the top of the storage tank; two low-position manholes and two high-position manholes are arranged at the bottom of the storage tank, and maintenance platforms are arranged for the installation of the assembled stainless steel full-liquid inner floating disc and the daily inspection and maintenance of the storage tank.

[0007] Further, the assembled stainless steel full-liquid inner floating disc is provided with telescopic supporting legs, which can be telescoped upward when the assembled stainless steel full-liquid inner floating disc is floated and telescoped downward when the assembled stainless steel full-liquid inner floating disc is lowered to the bottom, so as to ensure that the oil surface is covered when the liquid level rises and the oil surface is covered when the liquid level falls, thereby preventing the formation of an oil gas space.

[0008] Further, a measuring hole is arranged on the top of the storage tank for manual oil measurement, and a measuring platform is arranged, which is provided with an explosion-proof lighting lamp and an explosion-proof human touch static electricity elimination device for night work lighting and human static electricity elimination before operation.

[0009] Further, a floating oil pumping device is arranged inside the storage tank, and a sealed sampler is arranged below the storage tank, so that manual sealed sampling can be completed below the storage tank without climbing to the top of the tank, thereby greatly reducing the labor intensity of manual sampling.

[0010] Further, the liquid level detection device comprises a liquid level detection transmission device and an on-site liquid level detection display device, two sets of the liquid level detection device are arranged separately, the guide devices of the liquid level detection device penetrate through the assembled stainless steel full-liquid inner floating disc and are provided with a seal, and the data is transmitted to the management background of the central control room for data processing; two sets of the on-site liquid level detection display device are arranged separately, the on-site liquid level detection display device is arranged beside the valve of the storage tank, and the signal is directly transmitted from the liquid level detection transmission device to the on-site liquid level detection display device, so as to prevent the interruption of the data in the central control room background from affecting the on-site observation of the liquid level data.

[0011] Further, the storage tank is also provided with liquid level alarm device for prompting oil tank liquid level change, the liquid level alarm device includes ultrahigh liquid level alarm device, high liquid level alarm device and low liquid level alarm device, the ultrahigh liquid level alarm device and the high liquid level alarm device are arranged on the top outer wall of the storage tank near the top side of the ladder, and a maintenance platform is separately arranged; the low liquid level alarm device is arranged on the bottom outer wall of the storage tank near the low manhole side; the ultrahigh liquid level alarm device can quickly link the emergency shut-off valve to close and terminate the oil entering when reaching the limit liquid level of the storage tank; the high liquid level alarm device is set below the ultrahigh liquid level alarm device, and when the high liquid level alarm is triggered, the software alarm and the sound and light alarm in the central control room remind the security system operator on duty to remotely control the process operation valve to close and terminate the oil entering; the low liquid level alarm device is set to be higher than the falling height of the assembled stainless steel full-liquid inner floating disc support by more than 0.2 m.

[0012] Further, the storage tank is connected with an oil inlet and outlet pipe, the oil inlet and outlet pipe is provided with two remote control valves, the first remote control valve near the storage tank is used as a process operation valve, and the second remote control valve connected with the process operation valve is used as an emergency shut-off valve; when the ultrahigh liquid level alarm is triggered, interlocking closing occurs to prevent the oil from overflowing when exceeding the limit liquid level of the storage tank; the oil inlet and outlet pipe is provided with a metal hose for preventing pipeline cracking caused by abnormal conditions such as earthquakes, storage tank foundation subsidence, pipeline thermal expansion and contraction; the oil inlet and outlet pipe is respectively provided with an oil inlet pipe and an oil outlet pipe, the oil inlet pipe is provided with an oil inlet pipe remote control valve used as a process operation valve; the oil outlet pipe is provided with an oil outlet pipe remote control valve used as a process operation valve.

[0013] Further, the storage tank is connected with a blowdown pipe, the blowdown pipe is provided with three manual valves, the blowdown pipe is connected with an oil tank vent pipe and a drain, for recycling residual oil after the assembled stainless steel full-liquid inner floating disc falls to the bottom, the drain is used for daily water cutting operation and recycling of oil and water of the storage tank, after opening the manual valve, the oil and water vertically fall to the oil inlet funnel of the oil separation and adjustment pool device sewage receiving pipeline below, and flow into the adjustment oil separation pool device; the blind plate of the drain can be used to connect and install an emergency temporary external emergency oil suction device, a vacuum is generated by using the original storage and transportation system sweeping pump, a large amount of leaked oil can be sucked back into the vent tank from the fire dike, without the need for additional use of tanker, oil leakage recovery manual pump, oil leakage recovery aluminum cylinder and other emergency equipment resources, and the efficiency of emergency disposal of leaked oil is improved.

[0014] Furthermore, two sets of local liquid level detection and display devices are also installed on the ground of the storage tank, located next to the tank valve. These local liquid level detection and display devices are used by inspection personnel and metering personnel to observe liquid level data. A leak detection and early warning system is also installed below the bottom of the storage tank. Once an oil leak is detected at the bottom of the storage tank, the signal is immediately transmitted to the central control room.

[0015] Compared with existing technologies, the above-ground storage tank of this utility model adopts an integral steel vertical structure with an internal prefabricated stainless steel fully wettable internal floating roof. Prefabricated stainless steel components are installed on-site through a low-level manhole. During daily use, the support of the prefabricated stainless steel fully wettable internal floating roof is retractable, effectively preventing tipping and reducing daily evaporation. After the support reaches the bottom, it can be shortened, allowing the internal floating roof to continue descending with the liquid level, effectively isolating oil and air and preventing the formation of an oil and gas space when the internal floating roof reaches the bottom. The tank top integrates a flame arrester and a wind vane, enhancing safety and automatically sensing wind direction. The tank body is designed with a combination of ventilation holes and air vents to effectively prevent tank collapse and help balance internal pressure. A maintenance platform is provided for convenient installation and maintenance. A measuring port is provided for manual measurement, and a measuring platform and explosion-proof lighting are also included. The system is designed for ease of operation by staff; it includes two independently operating liquid level detection devices to ensure independent effectiveness, allowing for timely monitoring of liquid levels before routine inspections and metering operations; a liquid level alarm and early warning interlock system enables remote valve control and emergency interlocking, facilitating rapid response to high and ultra-high liquid level alarms; it incorporates residual oil recovery, wastewater discharge and water cut-off, floating oil extraction, and closed sampling systems to meet functional requirements, simplify daily operation, and reduce labor intensity; a tank bottom leakage detection and early warning system provides rapid early warning and response; and the storage tank is equipped with standardized anti-corrosion, fireproof, waterproof, and anti-static measures to effectively fulfill their respective functions. [Image Description]

[0016] Figure 1 This is a schematic diagram of the above-ground storage tank of this utility model.

[0017] Figure 2 This is a schematic cross-sectional view of the above-ground storage tank of this utility model.

[0018] Figure 3 This is a schematic diagram of the dome of the above-ground storage tank of this utility model.

[0019] Figure 4 This is a schematic diagram of the oil inlet and outlet pipes and valves of the above-ground storage tank of this utility model.

[0020] Figure 5 This is a schematic diagram of the sewage pipe and valve for the above-ground storage tank of this utility model.

[0021] The components include: tank body 1, ladder 2, tank top 3, oil inlet pipe 4, oil inlet pipe remote control valve 41, oil outlet pipe 5, oil outlet pipe remote control valve 51, drain pipe 6, drain pipe valve 61, drain outlet 7, drain outlet valve 71, static elimination device 8, low-level manhole 9, high-level manhole 10, flame arrester 11, ventilation hole 12, liquid level detection device 13, vent hole 14, wind vane 15, assembled stainless steel fully liquid-contact internal floating plate 16, retractable support foot 17, liquid level alarm device 18, measuring hole 19, floating oil pumping device 20, sealed sampler 21, liquid level detection local display device 22, first remote control valve 451, second remote control valve 452, metal hose 25, and manual valve 67. [Detailed Implementation]

[0022] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0024] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figure 1 , Figure 2 , Figure 3The diagram shows an above-ground oil depot storage tank, which is a steel vertical metal internal floating roof tank, including a tank body 1 and an assembled stainless steel fully liquid-contact internal floating roof 16. The top 3 of the tank body is domed, and a surrounding spiral staircase 2 is provided on the outside of the tank body. A flame arrester 11 is located at the center of the top of the tank, which prevents external lightning or external flames from entering the tank and causing an explosion or fire of flammable oil or gas. The outer edge of the top of the tank is provided with ventilation holes 12, vent holes 14, a liquid level detection device 13, and a wind vane 15. There are five ventilation holes 12, evenly distributed around the center of the top. One vent hole 14 is located on each side. By providing multiple ventilation holes, which are normally open, the internal pressure balance of the tank can be adjusted in a timely manner to prevent the tank from becoming pressurized or collapsing due to negative pressure, thus improving the safety and flexibility of the equipment. Two liquid level detection devices 13 are located on the sides of the spiral staircase 2 to monitor the liquid level of the tank in real time. The wind vane 15 is installed on the side of the top 2 of the ladder, allowing for real-time observation of the wind direction;

[0026] The storage tank is equipped with two low-level manholes 9 and two high-level manholes 10 at its bottom. These manholes provide access for personnel to enter the tank for installing the prefabricated stainless steel fully wetted internal floating roof, or for cleaning and maintenance. The low-level manholes 9 are located at a lower position at the bottom of the tank, allowing access during construction or maintenance to install the prefabricated stainless steel fully wetted internal floating roof, and for internal inspection, maintenance, and cleaning when the tank is emptied. The high-level manholes 10 are located at a higher position in the tank, facilitating necessary inspection and maintenance of the prefabricated stainless steel fully wetted internal floating roof after the tank has been emptied, without requiring entry into the tank.

[0027] like Figure 2 The assembled stainless steel fully wetted liquid internal floating roof 16 shown is equipped with retractable support legs 17. These legs can extend and retract vertically, rising and falling with the liquid level. This ensures maximum oil release while maintaining oil surface coverage, preventing the floating roof from sinking and creating an oil and gas space. The edges of the assembled stainless steel fully wetted liquid internal floating roof are equipped with flexible sealing strips. This type of top cover not only significantly reduces oil evaporation loss during storage, but also preferably includes internal buoyancy compartments and automatically opening / closing ventilation devices. This not only prevents violent shaking of the floating roof, which could cause contact with the oil, but also prevents the floating roof from capsizing and being damaged.

[0028] like Figure 3As shown, the tank top is also equipped with a measuring hole 19 for manual oil measurement, and a measuring platform. The measuring platform is equipped with explosion-proof lighting and an explosion-proof static electricity elimination device for nighttime operation lighting and for eliminating static electricity on the human body before measurement operations. The tank also has a floating oil extraction device 20 inside, and a sealed sampler 21 at the bottom of the tank, allowing for manual sealed sampling without needing to go to the top of the tank, reducing the labor intensity of manual sampling. The tank is also equipped with a liquid level alarm device 18 to indicate changes in the tank's liquid level.

[0029] like Figure 4 As shown, the storage tank is connected to an inlet and outlet oil pipe. The inlet and outlet oil pipe is equipped with two remote control valves. The first remote control valve 451, located closer to the storage tank, serves as a process control valve. The second remote control valve 452, connected to the process control valve, serves as an emergency shut-off valve. When an over-high liquid level alarm is triggered, it will interlock and close to prevent oil from overflowing due to exceeding the storage tank's limit level. Two sets of local liquid level detection and display devices 22 are also installed near the storage tank valves on the ground. These devices facilitate observation of liquid level data by inspection personnel and metering personnel. The inlet and outlet oil pipes are equipped with a flexible metal hose 25 to prevent pipe cracking caused by earthquakes, storage tank foundation subsidence, or thermal expansion and contraction of the pipeline. The inlet and outlet oil pipes are each equipped with an inlet pipe and an outlet pipe. The inlet pipe is equipped with an inlet remote control valve 41, which serves as a process control valve. The outlet pipe is equipped with an outlet remote control valve 51, which also serves as a process control valve.

[0030] like Figure 5 As shown, the storage tank is connected to a drain pipe 6, which is equipped with three manual valves: drain pipe valve 61, outlet valve 71, and manual valve 67. The drain pipe connects to the empty tank oil pipeline and the drain outlet, and is used to recover residual oil after the assembled stainless steel fully submerged internal floating plate sinks to the bottom. If water seeps into the storage tank, the quality of the oil will be affected. Therefore, a drain outlet 7 is provided at the bottom of the storage tank to drain the water accumulated in the tank, and to carry out daily water removal operations and oily wastewater recovery operations. After opening the manual valve, the oily wastewater falls vertically to the oil collection funnel of the wastewater collection pipeline of the oil-water separation and regulating tank device below, and flows into the regulating oil-water separation tank device. An emergency temporary external emergency oil suction device can be installed on the blind flange of the drain outlet. Using the existing storage and transportation system's sweeping pump to create a vacuum, after opening the manual valve 67, a large amount of leaked oil can be sucked back from inside the fire dike into the empty tank, without the need for additional emergency equipment resources such as oil tankers, oil spill recovery manual pumps, and oil spill recovery aluminum cylinders, thus improving the efficiency of emergency response to leaked oil. Similarly, a metal flexible hose 25 is provided to prevent pipeline cracking caused by abnormal conditions such as earthquakes, tank foundation subsidence, and thermal expansion and contraction of pipelines.

[0031] In this embodiment, the oil inlet pipe 4 connects to the oil tank. The oil inlet pipe 4 has an oil inlet port, which is connected to a flow signal transmitter. The rate at which oil enters the storage tank is controlled by a pipeline valve. The drain pipe 6 is equipped with a drain valve, and a drain outlet is located at the bottom of the storage tank. The drain valve connects to the drain pipe 6 and the drain outlet, and the drain valve is connected to the drain outlet via the drain pipe 6. The drain valve and drain outlet at the bottom of the oil storage tank allow for the rapid discharge of contaminants from the tank.

[0032] In this embodiment, the oil inlet valve of the oil inlet pipe and the drain valve of the drain pipe of the above-ground storage tank of the oil depot can adjust the oil level in the tank. The flow controller can adjust the oil inlet flow rate. Under normal operation, the oil inlet speed remains consistent. In case of abnormality, the valve can be opened or closed according to the actual situation to achieve rapid adjustment of the oil flow rate. By setting the ventilation hole 12 and the vent hole 14 on the outer side of the oil storage tank, the normal pressure inside and outside the oil storage tank is maintained.

[0033] Anti-corrosion and fire-retardant coatings are applied to the outer wall of the storage tank 1. Explosion-proof static electricity elimination devices 8 are installed at the entrance of the external ladder and the measuring platform on the top of the storage tank. These devices can effectively discharge static electricity from the human body, prevent the accumulation of static electricity, and make human operation safe and reliable.

[0034] The above-ground oil depot storage tank of this invention adds safe passages and ventilation holes for personnel to enter and exit the tank, ensuring unobstructed airflow inside and outside the tank. It also includes a liquid level detection device for real-time monitoring of the oil level inside the tank. A newly installed prefabricated stainless steel fully-contact internal floating roof extends downwards when it reaches the bottom, maintaining its coverage of the oil surface and minimizing the height of the floating roof to allow for the release of stored oil, preventing the formation of explosive oil and gas spaces, and ensuring reliability, independence, and effectiveness. A flame arrester is added to prevent external lightning or flames from entering the tank and causing flammable oil or gas explosions or fires. A sealed sampler is also added below the tank, reducing occupational hazards and labor intensity during sampling. Furthermore, the above-ground oil depot storage tank of this invention solves the problems of insufficient lighting at the tank top, lack of remote automatic control for valve opening and closing, difficulty in inspecting and maintaining the liquid level alarm device 18, and the inability to effectively handle bottom oil inside the tank and leaked oil outside the tank, ensuring the safe operation of the oil depot and possessing significant practical value.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An aboveground storage tank for an oil depot, characterized in that, The storage tank is a steel vertical metal internal floating roof storage tank, including a tank body and an assembled stainless steel fully liquid-contact internal floating roof. A spiral staircase is provided on the outside of the tank body. An explosion-proof human touch static electricity elimination device is installed below the staircase for eliminating static electricity from the human body before touching the staircase. A flame arrester is provided at the center of the top of the storage tank. Multiple ventilation holes, multiple air vents, multiple liquid level detection devices, a wind vane, explosion-proof lighting, explosion-proof human touch static electricity elimination devices, and a liquid level alarm device are provided on the outer edge of the top. There are 5 ventilation holes, evenly distributed around the center of the top. One air vent is provided on each side of the top, and two sets of liquid level detection devices and a wind vane are provided on the top side of the staircase.

2. The above-ground storage tank for an oil depot according to claim 1, characterized in that, The tank top is equipped with anti-slip steps and guardrails, with two anti-slip steps and guardrails extending from the perimeter of the tank top towards the center. The tank bottom is equipped with two low-level manholes and two high-level manholes, all equipped with inspection and maintenance platforms for the installation of the assembled stainless steel fully liquid-contact internal floating roof and for daily inspection and maintenance of the tank.

3. The above-ground storage tank for oil depots according to claim 1, characterized in that, The assembled stainless steel fully-contact liquid-cooled internal floating roof is equipped with retractable support feet. After the retractable support feet reach the bottom, they can extend and retract vertically. When the assembled stainless steel fully-contact liquid-cooled internal floating roof rises, it extends and retracts upwards, ensuring oil surface coverage as the liquid level rises. When the assembled stainless steel fully-contact liquid-cooled internal floating roof reaches the bottom, it extends and retracts downwards to continue covering the oil surface, preventing the assembled stainless steel fully-contact liquid-cooled internal floating roof from forming an oil and gas space when it reaches the bottom.

4. The above-ground storage tank for an oil depot according to claim 1, characterized in that, The tank top is also equipped with a measuring hole for manual measurement of oil, and a measuring platform. The measuring platform is equipped with explosion-proof lighting and an explosion-proof human touch static electricity elimination device for nighttime operation lighting and for eliminating static electricity on the human body before operation.

5. The above-ground storage tank for an oil depot according to claim 1, characterized in that, The storage tank is also equipped with a floating oil pumping device and a sealed sampler at the bottom of the tank, which allows for manual sealed sampling without having to go to the top of the tank, greatly reducing the labor intensity of manual sampling.

6. The above-ground storage tank for an oil depot according to claim 1, characterized in that, The liquid level detection device includes a liquid level detection transmission device and a liquid level detection local display device. Two sets of the liquid level detection device are set up separately. The guide devices of the liquid level detection device pass through the assembled stainless steel fully liquid-contact internal floating plate and are sealed. The data is remotely transmitted to the central control room management background for data processing. Two sets of the liquid level detection local display device are set up separately. The liquid level detection local display device is located next to the storage tank valve and the signal is directly transmitted to the liquid level detection local display device by the liquid level detection transmission device to prevent the central control room background data from being interrupted and affecting the on-site observation of liquid level data.

7. The above-ground storage tank for an oil depot according to claim 1, characterized in that, The storage tank is also equipped with a liquid level alarm device to indicate changes in the tank's liquid level. This alarm device includes an over-high liquid level alarm, a high liquid level alarm, and a low liquid level alarm. The over-high liquid level alarm and the high liquid level alarm are both located on the outer wall of the tank top, near the top of the ladder, and are housed on a separate maintenance platform. The low liquid level alarm is located on the outer wall of the tank bottom, near the low-level manhole. The over-high liquid level alarm can quickly activate the emergency shut-off valve to close and stop the continued flow of oil before the tank's limit liquid level is reached. The high liquid level alarm is located below the over-high liquid level alarm; when triggered, it triggers a software alarm and an audible and visual alarm in the central control room, alerting the security system operator to remotely control the process control valve to close and stop the continued flow of oil. The low liquid level alarm is set at a height at least 0.2 meters higher than the bottom height of the fully lowered, retractable stainless steel fully submersible internal floating roof support.

8. The above-ground storage tank for an oil depot according to claim 1, characterized in that, The storage tank is connected to an inlet and outlet oil pipe. The inlet and outlet oil pipe is equipped with two remote control valves. The first remote control valve, located closer to the storage tank, is used as a process operation valve, and the second remote control valve, connected to the process operation valve, is used as an emergency shut-off valve. When an over-high liquid level alarm is triggered, the valve will interlock and close to prevent the oil from overflowing due to exceeding the storage tank's limit level. The inlet and outlet oil pipe is equipped with a metal flexible hose to prevent pipe rupture caused by earthquakes, storage tank foundation subsidence, or abnormal thermal expansion and contraction of the pipeline. The inlet and outlet oil pipes are each equipped with an inlet pipe and an outlet pipe. The inlet pipe is equipped with an inlet remote control valve, which is used as a process operation valve. The outlet pipe is equipped with an outlet remote control valve, which is used as a process operation valve.

9. An aboveground storage tank for an oil depot according to claim 1, characterized in that, The storage tank is connected to a drain pipe equipped with three manual valves. The drain pipe connects to the empty tank oil pipeline and the drain outlet, which is used to recover residual oil after the assembled stainless steel fully submerged internal floating plate sinks to the bottom. The drain outlet is used for daily water-cutting operations of the storage tank and recovery of oily wastewater. After opening the manual valves, the oily wastewater falls vertically into the oil collection funnel of the wastewater collection pipeline of the oil-water separation and regulating tank device below, and flows into the regulating oil-water separation tank device. The blind flange of the drain outlet can be used to connect and install an emergency temporary external emergency oil suction device. By using the existing storage and transportation system's sweeping pump to create a vacuum, a large amount of leaked oil can be sucked back from inside the firewall into the empty tank, without the need for additional oil tankers, manual oil recovery pumps, and emergency oil recovery aluminum cylinders, thus improving the efficiency of emergency response to leaked oil.

10. An aboveground oil depot storage tank according to claim 1, characterized in that, Two local liquid level detection and display devices are also installed on the ground of the storage tank, located next to the tank valve. These devices are used by inspectors and metering personnel to observe the liquid level data. A leak detection and early warning system is also installed below the bottom of the storage tank. Once an oil leak is detected at the bottom of the tank, the signal is immediately transmitted to the central control room.

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