Oil tank sling float device

Abstract

The application discloses an oil storage tank sling floating disc device, which comprises a tank body and a floating disc. The floating disc is movably arranged in the tank body. The floating disc is provided with a floating disc framework with a polygonal structure. The floating disc framework is connected with a sling. A plurality of supporting legs, which are rotationally connected with the floating disc, are uniformly arranged below the floating disc. A lifting device is arranged on the tank body. A guide device, which is matched with the sling, is arranged on the top of the tank body. The sling is connected with the lifting device through the guide device and the tank body. The framework, which is connected with the sling, is arranged on the floating disc in the tank. The reversing of the sling is arranged. The uniformity of the stress is ensured. The floating disc can avoid touching the obstacles in the tank when the floating disc is lifted. The lifting device, which is connected with the sling, is arranged on the tank body. The lifting of the floating disc is realized. The controllability of the floating disc is realized. The supporting legs are arranged on the bottom of the floating disc. The supporting legs can be retracted or extended according to the actual situation. The limitation problem of the height of the supporting legs to the actual demand is further reduced. The flexibility of the use of the supporting legs is further improved.

Description

Technical Field

[0001] This invention relates to the field of oil storage tank technology, specifically to an oil storage tank sling float device. Background Technology

[0002] In existing internal floating roof tanks, the floating roof descends to the bottom of the tank as the liquid level rises, and the entire floating roof is supported by several outriggers. The support height has two values: one is the lowest point of the floating roof, and the other is the height of the floating roof during tank or floating roof maintenance. To fully utilize the effective volume within the tank, the former should not exceed 0.9m², and the latter should not be less than 1.8m², to facilitate maintenance.

[0003] The "Ten Regulations on Fire Prevention and Explosion Protection in Oil and Gas Tank Areas" stipulates that "it is strictly forbidden for the floating roof of an internal floating roof tank to sink to the bottom during operation"; the "Design Specification for Vertical Cylindrical Steel Welded Oil Tanks" also stipulates that "the vertical distance between the bottom of the outer edge of the internal floating roof and the top of the tank bottom should not be less than 1.8m"; the "Supplementary Regulations on Process Safety Management of Internal Floating Roof Tanks" also stipulates the height: "when internal floating roof tanks are receiving and discharging oil normally, the lowest liquid level should be controlled 200mm above the liquid level when the internal floating roof is at the support height; the highest liquid level should be controlled 300mm below the maximum design liquid level height."

[0004] To ensure that the floating roof, when lowered to its lowest position, does not interfere with auxiliary facilities inside the tank, refineries or oil depots typically set the minimum liquid level of the stored oil in the tank at a height of approximately 2 meters from the bottom plate. This means that the actual thickness of the floating roof during normal operation inside the oil storage tank is 2 meters.

[0005] The "Ten Regulations on Fire and Explosion Prevention in Oil and Gas Tank Farms" stipulate that "operating oil and gas storage tanks beyond their rated temperature, pressure, or liquid level, and arbitrarily changing the stored medium are strictly prohibited." Therefore, during normal operation, to maximize economic benefits, all oil depots and cargo owners aim to fill tanks to their maximum liquid level when storing goods and to their minimum liquid level when shipping them. In other words, they strive to fill tanks to their maximum capacity when adding oil and to their minimum capacity when discharging it, thereby maximizing economic benefits by maximizing the amount of goods stored or rotated.

[0006] In existing technology, the minimum control height of the oil level in the tank is set based on the premise that the floating roof should not touch any obstructions (tank accessories) while floating in the tank. This minimum control height determines the lowest position where the floating roof will fall. Based on this, the support legs are determined. The support legs are those that minimize solvent contact to support the floating roof; the support leg height is defined as follows.

[0007] The main problem with existing internal floating roof oil tanks is that during operation, the 2m liquid level is the minimum limit of the floating roof, which restricts the spatial position of the liquid level within the tank. In other words, the outriggers, floating roof, and liquid level limit, among other things, together create a 2m thick empty space inside the tank, effectively occupying the tank's usable volume.

[0008] Several fixed support legs were installed on the floating roof beam. During tank maintenance, when workers opened the manhole in the tank wall to prepare for cleaning, several support legs stood upright at the bottom of the tank, making it impossible to open up the work surface. The engineering equipment for efficiently cleaning sludge could not be used, and the construction workers could only clean the sludge at the bottom of the tank by hand, which was extremely inefficient and actually resulted in a waste of tank cleaning costs.

[0009] The problem with existing technology is that when the floating roof is at its supported height, it is necessary to ensure that the floating roof does not collide with the tank bottom accessories. However, when the oil is emptied and the floating roof sinks to the bottom, the narrow space created by its several outriggers touching the ground restricts the progress of cleaning or accessory maintenance work inside the tank.

[0010] Therefore, a floating roof device for oil storage tanks is proposed to address the current shortcomings. Summary of the Invention

[0011] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide an oil storage tank sling float device.

[0012] To solve the above-mentioned technical problems, the technical solution provided by the present invention is an oil storage tank sling float device, comprising a tank body and a float.

[0013] The floating roof is movably installed inside the tank. The floating roof has a polygonal floating roof skeleton. The floating roof skeleton is connected to the connection points with lifting cables. Multiple support legs that are rotatably connected to the floating roof are evenly provided under the floating roof.

[0014] The tank is equipped with a lifting device, and the top of the tank is equipped with a guide device that works with the sling. The sling passes through the guide device, the tank, and is connected to the lifting device.

[0015] As an improvement, the guiding device includes a plurality of guide buckles connected to the inner wall of the top of the tank. The number of guide buckles is the same as the number of slings and they are set accordingly. The slings pass through the corresponding guide buckles and are connected to the lifting device.

[0016] As an improvement, the guiding device is a guide buckle 2 located at the top center of the tank body and connected to the inner wall of the top of the tank body. The sling passes through the guide buckle 2, the tank body and the lifting device.

[0017] As an improvement, the lifting device is located at the top of the tank.

[0018] As an improvement, the lifting device is located on the lower part of the outer side of the tank.

[0019] The advantages of this invention compared with the prior art are: 1. By adding a skeleton for connecting the slings to the floating roof inside the tank, and by changing the direction of the slings, the uniformity of the force is ensured, and it is also ensured that it avoids touching the obstacles inside the tank when it is raised or lowered.

[0020] 2. The floating roof can be raised and lowered by the lifting device connected to the slings on the tank body, thus achieving controllability of the floating roof. At the same time, the outriggers at the bottom of the floating roof can be extended and retracted according to actual conditions, further reducing the limitation of outrigger height on actual needs and further enhancing its flexibility of use.

[0021] 3. This device can effectively solve the inoperability of traditional floating platforms, avoiding the problems of low work efficiency, soaring costs and safety hazards caused by the narrow operating space formed by the outriggers during construction. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the internal structure of an embodiment of the oil storage tank sling float device of the present invention.

[0023] Figure 2 This is a schematic diagram of the internal structure of another embodiment of the oil storage tank sling float device of the present invention.

[0024] Figure 3 This is a schematic diagram of the internal structure of a second embodiment of the oil storage tank suspending float device of the present invention.

[0025] Figure 4 This is a schematic diagram of the internal structure of another embodiment of the oil storage tank sling float device of the present invention.

[0026] As shown in the figure: 1. Tank body, 2. Floating roof, 3. Floating roof frame, 4. Hoisting cable, 5. Outrigger, 6. Lifting device, 7. Guiding device, 8. Guide buckle one, 9. Guide buckle two, 10. Breathing valve. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the invention clearer, the technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] In the description of the embodiments of the invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the invention 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 on the invention. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of the invention, "a plurality of" means at least two.

[0031] In the description of the embodiments of the invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the invention according to the specific circumstances.

[0032] Example 1

[0033] Combined with appendix Figure 1 As shown, an oil storage tank sling float device includes a tank body 1 and a float 2;

[0034] The tank body 1 is provided with a breather valve 10 at the top. The floating plate 2 is movably installed inside the tank body 1. The shape of the floating plate 2 is adapted to the inner wall of the tank body 1. The floating plate 2 can be made of aluminum, stainless steel, or fully liquid-contact honeycomb material. Similarly, it can also be made of flexible floating plate made of polymer material.

[0035] The floating platform 2 is provided with a polygonal floating platform frame 3. The polygonal structure can be a regular polygon or an asymmetrical polygon. In this embodiment, the polygonal floating platform frame 3 is a regular hexagonal structure. The floating platform frame 3 is connected to the connection points with slings 4, that is, there are 6 slings 4, which realize the lifting operation of the floating platform 2. The slings 4 are steel wire ropes. Similarly, the slings can also be made of other metal materials that meet the requirements of tensile strength and flexibility.

[0036] In actual operation, the sling 4 is used to solve the required position of the floating roof 2 when it is in a dynamic or static state inside the tank 1. That is, according to actual needs, the specific position of the floating roof 2 in the tank 1 for raising, lowering and stopping can be determined as required, and the low, middle or high position of the floating roof 2 can be determined as required, so as to achieve the optimal operating space under different working conditions of the tank 1; thus creating great convenience for the operation and maintenance of the tank 1 and the floating roof 2.

[0037] The floating platform 2 is provided with a plurality of legs 5 evenly distributed below it and rotatably connected to the floating platform 2. The legs 5 are arranged circumferentially around the bottom side of the floating platform 2. Specifically, the legs 5 are rotatably connected to the floating platform 2. In actual operation, the legs 5 can be kept in a parallel and retracted state with the floating platform 2. At the same time, the legs 5 can also be kept in a 90-degree support state with the floating platform 2. In addition, the legs 5 can be a support structure with lifting function.

[0038] In actual operation, when tank 1 is under maintenance, the outriggers 5 are kept parallel to the floating roof 2 and retracted. When the floating roof 2 is under maintenance, the outriggers 5 are kept at a 90-degree angle to the floating roof 2, at which point the outriggers 5 are lowered to support the floating roof. After maintenance, the outriggers 5 are retracted to the same parallel position as the floating roof 2. When oil is being pumped into the tank, the retracted outriggers 5 and the floating roof 2 become one and float with the liquid level. In both operating and maintenance conditions of the floating roof 2, the retraction and lowering of the outriggers 5 enable the outriggers 5 to float with the floating roof or support the floating roof 2, thus achieving the goal that the floating roof 2 is no longer limited by the height of the outriggers when moving up and down or stopping within tank 1.

[0039] The tank body 1 is equipped with a lifting device 6, which can be manual or electrically driven. Specifically, the lifting device 6 is located at the top of the tank body 1. Alternatively, the lifting device 6 can be located on the lower outer side of the tank body 1. The configuration of the lifting device 6 can be adjusted according to actual usage requirements.

[0040] In actual operation, the floating roof 2 can be raised or lowered by operating the lifting device 6 and retracting the sling 4.

[0041] The top of the tank body 1 is provided with a guide device 7 that cooperates with the sling 4. The sling 4 passes through the guide device 7, the tank body 1 and the lifting device 6.

[0042] Specifically, the guiding device 7 includes multiple guide buckles 8 connected to the inner wall of the top of the tank 1. Each guide buckle 8 can be any one of a lifting wheel, a lifting ring, or a lifting hook. The specific form of the guide buckle 9 can be selected according to the actual situation. The number of guide buckles 8 is the same as the number of slings 4 and they are set accordingly. The slings 4 pass through the corresponding guide buckles 8 and are connected to the lifting device 6.

[0043] In practical use, the guide buckle 8 serves as the support point of the sling 4, that is, the point of force for the sling 4 to pull the floating plate 2.

[0044] By operating the floating roof 2, the device creates an open space within the confined tank 1, reducing the risk of various damages to the floating roof 2 that may occur to the tank 1 during various maintenance and construction operations. At the same time, it creates an efficient working environment for various construction operations within the tank 1, which can improve the work efficiency of tank 1 maintenance, thereby greatly improving the safety and practicality of tank 1 maintenance.

[0045] Example 2

[0046] Combined with appendix Figure 1 As shown, an oil storage tank sling float device includes a tank body 1 and a float 2;

[0047] The tank body 1 is provided with a breather valve 10 at the top. The floating plate 2 is movably installed inside the tank body 1. The shape of the floating plate 2 is adapted to the inner wall of the tank body 1. The floating plate 2 can be made of aluminum, stainless steel, or fully liquid-contact honeycomb material. Similarly, it can also be made of flexible floating plate made of polymer material.

[0048] The floating platform 2 is provided with a polygonal floating platform frame 3. The polygonal structure can be a regular polygon or an asymmetrical polygon. In this embodiment, the polygonal floating platform frame 3 is a regular hexagonal structure. The floating platform frame 3 is connected to the connection points with slings 4, that is, there are 6 slings 4, which realize the lifting operation of the floating platform 2. The slings 4 are steel wire ropes. Similarly, the slings can also be made of other metal materials that meet the requirements of tensile strength and flexibility.

[0049] In actual operation, the sling 4 is used to solve the required position of the floating roof 2 when it is in a dynamic or static state inside the tank 1. That is, according to actual needs, the specific position of the floating roof 2 in the tank 1 for raising, lowering and stopping can be determined as required, and the low, middle or high position of the floating roof 2 can be determined as required, so as to achieve the optimal operating space under different working conditions of the tank 1; thus creating great convenience for the operation and maintenance of the tank 1 and the floating roof 2.

[0050] The floating platform 2 is provided with a plurality of legs 5 evenly distributed below it and rotatably connected to the floating platform 2. The legs 5 are arranged circumferentially around the bottom side of the floating platform 2. Specifically, the legs 5 are rotatably connected to the floating platform 2. In actual operation, the legs 5 can be kept in a parallel and retracted state with the floating platform 2. At the same time, the legs 5 can also be kept in a 90-degree support state with the floating platform 2. In addition, the legs 5 can be a support structure with lifting function.

[0051] In actual operation, when tank 1 is under maintenance, the outriggers 5 are kept parallel to the floating roof 2 and retracted. When the floating roof 2 is under maintenance, the outriggers 5 are kept at a 90-degree angle to the floating roof 2, at which point the outriggers 5 are lowered to support the floating roof. After maintenance, the outriggers 5 are retracted to the same parallel position as the floating roof 2. When oil is being pumped into the tank, the retracted outriggers 5 and the floating roof 2 become one and float with the liquid level. In both operating and maintenance conditions of the floating roof 2, the retraction and lowering of the outriggers 5 enable the outriggers 5 to float with the floating roof or support the floating roof 2, thus achieving the goal that the floating roof 2 is no longer limited by the height of the outriggers when moving up and down or stopping within tank 1.

[0052] The tank body 1 is equipped with a lifting device 6, which can be manual or electrically driven. Specifically, the lifting device 6 is located at the top of the tank body 1. Alternatively, the lifting device 6 can be located on the lower outer side of the tank body 1. The configuration of the lifting device 6 can be adjusted according to actual usage requirements.

[0053] In actual operation, the floating roof 2 can be raised or lowered by operating the lifting device 6 and retracting the sling 4.

[0054] The top of the tank body 1 is provided with a guide device 7 that cooperates with the sling 4. The sling 4 passes through the guide device 7, the tank body 1 and the lifting device 6.

[0055] Specifically, the guiding device 7 is a guide buckle 9 located at the top center of the tank body 1 and connected to the inner wall of the top of the tank body 1. The guide buckle 9 can be any one of a lifting wheel, a lifting ring, or a lifting hook. The specific form of the guide buckle 9 can be selected according to the actual situation. The sling 4 passes through the guide buckle 9 and is connected to the lifting device 6 of the tank body.

[0056] In practical use, the guide buckle 8 serves as the support point of the sling 4, that is, the point of force for the sling 4 to pull the floating plate 2.

[0057] By operating the floating roof 2, the device creates an open space within the confined tank 1, reducing the risk of various damages to the floating roof 2 that may occur to the tank 1 during various maintenance and construction operations. At the same time, it creates an efficient working environment for various construction operations within the tank 1, which can improve the work efficiency of tank 1 maintenance, thereby greatly improving the safety and practicality of tank 1 maintenance.

[0058] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A floating roof device for an oil storage tank, characterized in that: Includes the tank body (1) and the floating roof (2); The floating plate (2) is movably installed inside the tank body (1). The floating plate (2) is provided with a polygonal floating plate skeleton (3). The floating plate skeleton (3) is connected to a sling (4) at the connection point. Multiple support legs (5) that are rotatably connected to the floating plate (2) are evenly provided under the floating plate (2). The outrigger (5) can be retracted in parallel with the floating plate (2), and at the same time, the outrigger (5) can also be supported at a 90-degree angle with the floating plate (2). The tank (1) is provided with a lifting device (6), and the top of the tank (1) is provided with a guide device (7) that cooperates with the sling (4). The sling (4) passes through the guide device (7), the tank (1) and the lifting device (6). The guiding device (7) includes multiple guide buckles (8) connected to the inner wall of the top of the tank (1). The number of guide buckles (8) is the same as the number of slings (4) and they are set accordingly. The slings (4) pass through the corresponding guide buckles (8) and are connected to the lifting device (6). The sling is pulled evenly at multiple points by the guide buckle (8), and the lifting and lowering does not touch the obstructions inside the tank. Alternatively, the guide device (7) may be a guide buckle (9) located at the top center of the tank (1) and connected to the inner wall of the top of the tank (1). The sling (4) passes through the guide buckle (9), the tank and the lifting device (6).

2. The oil storage tank sling float device according to claim 1, characterized in that: The guide buckle one (8) and guide buckle two (9) can be any one of a lifting wheel, a lifting ring or a lifting hook.

3. The oil storage tank levitation cable floating device according to claim 1, characterized in that: The lifting device (6) is located on the lower part of the outer side of the tank (1).

4. The oil storage tank levitation cable floating device according to claim 1, characterized in that: The tank (1) is equipped with a breather valve (10) at the top.

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