External adjustable supporting leg device for floating disc of oil storage tank

Abstract

The invention discloses an external adjustable supporting leg device for a floating disc of an oil storage tank. The external adjustable supporting leg device comprises a tank body, the floating disc, a supporting leg part and a rope winder, the floating disc is movably arranged in the tank body, the supporting leg parts are circumferentially arranged at the bottom of the floating disc, the supporting leg parts comprise short supporting legs and long supporting legs, the short supporting legs are fixedly connected with the floating disc, mounting grooves are formed in the lower portions of the short supporting legs, and the upper portions of the long supporting legs are located in the mounting grooves and rotationally connected with the short supporting legs; the rope winder is fixedly arranged at the top of the tank body, a group of stay wires extending to the bottom of the floating disc are reversely wound on the rope winder, any stay wire is connected with a branch stay rope I connected with the tops of the long supporting legs respectively, and the other stay wire is connected with a branch stay rope II connected with the upper parts of the long supporting legs respectively. The adjustable supporting leg device is simple in structure and convenient to operate, height adjustability, operation convenience and safety of an oil storage tank floating disc supporting system are achieved, meanwhile, cost effectiveness and maintenance convenience are considered, and the adjustable supporting leg device is suitable for oil storage facility management under complex working conditions.

Description

Technical Field

[0001] The invention relates to the technical field of oil storage tanks, in particular to an externally adjustable leg device for a floating plate of an oil storage tank. Background Art

[0002] Oil storage tanks are key equipment for storing oil and other liquids in the petroleum and chemical industries. They are usually equipped with floating plates inside. The function of the floating plate is to separate the liquid and gas space, and float up and down with the change of the liquid level in the tank to reduce the evaporation loss of oil products and improve storage safety.

[0003] In existing internal floating roof oil tanks, when the floating plate falls to the bottom of the tank with the liquid level, the entire floating plate is supported by a number of legs. There are two supporting heights: one is the lowest position of the floating plate, and the other is the height of the floating plate when the oil tank or floating plate is being repaired. In order to make full use of the effective volume in the tank, the former is 0.2m higher than the liquid level, and the latter is not less than 1.8m, for easy maintenance.

[0004] The floating plate legs of the oil tank: when the floating plate of the oil tank drops with the liquid level of the medium in the tank until its legs touch the bottom plate of the tank, the legs support the entire floating plate and stop the floating plate from moving downward. The height of the floating plate at this time is also the lowest position of the floating plate in the tank.

[0005] According to the "Vertical Cylindrical Steel Welded Oil Tank Design Specifications": "The vertical distance between the bottom of the outer edge of the inner floating plate and the top of the tank bottom should not be less than 1.8m"; at the same time, Article 6 of the "Ten Regulations on Fire Prevention and Explosion Prevention in Oil and Gas Tank Areas": "It is strictly forbidden for the floating plate to fall to the bottom during the operation of the internal floating roof storage tank"; plus the operating procedures The control height is generally 0.2m, this results in an invalid height of 2m below the floating plate, and the minimum liquid level of the storage medium in the tank must also be controlled above 2m.

[0006] In order to maximize the effective volume of the tank, make full use of the space in the tank and convert it into economic benefits, it is the actual demand of the enterprise. At present, the existing technologies of floating plate outriggers are: one is a fixed height outrigger; the other is an adjustable outrigger, which requires professionals to enter the tank to adjust the height.

[0007] At the same time, before changing the height of the above-mentioned outriggers, water needs to be filled into the tank to lift the float plate so that the outriggers are suspended in the air. After the gas in the tank is tested and qualified, the conditions for entering the limited space are met. Then, professionals enter the tank through the manhole to make manual adjustments. After the adjustment work is completed, the water in the tank must be drained and the tank is sealed. This repeated operation of filling and draining the tank and personnel entering and exiting the oil tank not only greatly increases the cost of the enterprise, but also increases the safety risk.

[0008] Therefore, an externally adjustable outrigger device for an oil storage tank floating plate is proposed to solve the current shortcomings. Summary of the invention

[0009] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide an externally adjustable leg device for an oil storage tank floating plate.

[0010] In order to solve the above technical problems, the technical solution provided by the present invention is an external adjustable leg device for an oil storage tank floating plate, comprising a tank body, a floating plate, a leg part and a rope reel;

[0011] The floating plate is movably arranged in the tank body, and a plurality of the leg parts are circumferentially arranged at the bottom of the floating plate. The leg parts include short legs and long legs. The short legs are fixedly connected to the floating plate, and the lower part of the short legs is provided with a mounting groove. The upper part of the long legs is located in the mounting groove and is rotatably connected to the short legs.

[0012] The rope reel is fixedly arranged on the top of the tank body, and a group of pull lines extending to the bottom of the floating plate are reversely wound on the rope reel. Any of the pull lines is connected to a pull line 1 connected to the top of the long support leg, and the other pull line is connected to a pull line 2 connected to the upper part of the long support leg.

[0013] As an improvement, a limiting plate is provided on one side of the short leg close to the pull wire.

[0014] As an improvement, when the long leg is in the unfolded state, the long leg is coaxially arranged with the short leg, and the top end of the long leg abuts against the limiting plate.

[0015] As an improvement, a pull rope connected to the top of the long leg passes through the limiting plate and is connected to the top of the long leg.

[0016] As an improvement, a conduit for passing the pull wire is coaxially provided at the bottom of the floating plate. The first pull rope passes through the middle of the conduit and is connected to the top of the corresponding long support leg. The second pull rope passes through the bottom of the conduit and is connected to the upper part of the corresponding long support leg.

[0017] As an improvement, the catheter is circumferentially provided with a guide ring cooperating with the first and second pull ropes.

[0018] As an improvement, in the initial state, the short legs are vertically arranged at the bottom of the floating plate, the long legs are parallel to the floating plate, and the lower part of the long legs is close to the pull line.

[0019] As an improvement, the weight of one end of the long leg close to the short leg is greater than the weight of the other end thereof.

[0020] The advantages of the present invention compared with the prior art are:

[0021] 1. Through the combination of short outriggers (fixed) and long outriggers (rotatable), dynamic adjustment of the outrigger length is achieved to adapt to different height requirements of the floating platform. The weight of the long outriggers close to the short outriggers is greater, and gravity is used to assist the outriggers in resetting, reducing dependence on external forces and enhancing operational stability. The reversely wound guy wires work together through the split guy wire 1 (top connection) and the split guy wire 2 (upper connection) to ensure that multiple outriggers are deployed / retracted synchronously to avoid tilting of the floating platform.

[0022] 2. The external rope reel is used to move the power and control parts to the outside of the tank, which simplifies the structural design of the floating plate and the legs, improves the internal space utilization, and avoids the arrangement of complex mechanical or hydraulic components inside the floating plate, reducing the overall weight and complexity of the floating plate. It is also convenient for maintenance and inspection of the rope reel without entering the tank, thereby improving safety.

[0023] 3. Two winding parts in opposite directions are set on the rope reel, which are respectively wound with two independent pull wires. The two pull wires are respectively connected to different parts of the legs. Through the coordinated work of the two pull wires, it is ensured that all the legs can be adjusted synchronously to achieve precise control of the horizontality of the floating plate.

[0024] 4. A conduit is set at the bottom of the floating plate to provide a passage for the pull wire to avoid entanglement and interference; a guide ring is set around the conduit to guide and fix the pull wire to further prevent entanglement and jamming, ensuring the stability and smoothness of the adjustment process.

[0025] 5. The adjustable leg device has a simple structure and is easy to operate, which realizes the height adjustability, convenient operation and safety of the oil tank floating plate support system, while taking into account cost-effectiveness and maintenance convenience, and is suitable for oil storage facility management under complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is a structural schematic diagram of an externally adjustable outrigger device for an oil storage tank floating plate.

[0027] Figure 2 The utility model is a front view of an externally adjustable outrigger device of an oil storage tank floating plate of the present invention.

[0028] Figure 3 yes Figure 2 Cross-sectional view at AA in the middle.

[0029] Figure 4 This is a schematic diagram of the internal structure of an oil tank floating plate externally adjustable outrigger device of the present invention. Figure 1 .

[0030] Figure 5 Schematic diagram of the internal structure of an externally adjustable outrigger device for an oil tank floating plate of the present invention Figure 2 .

[0031] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle.

[0032] As shown in the figure:

[0033] 1. Tank body, 2. Floating plate;

[0034] 3. Outrigger part, 31, short outrigger, 32, long outrigger;

[0035] 4. Rope reel, 5. Mounting groove, 6. Pull wire, 7. Pull rope 1, 8. Pull rope 2, 9. Limit plate, 10. Conduit, 11. Guide ring. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the invention clearer, the technical solution in the embodiments of the invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the invention. Obviously, the described embodiments are part of the embodiments of the invention, not all of the embodiments. Generally, the components of the embodiments of the invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] In the description of the embodiments of the invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, it is only for the convenience of describing the invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0038] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of the embodiments of the invention, "a plurality of" means at least two.

[0040] In the description of the embodiments of the invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0041] As shown in the accompanying drawings, an externally adjustable outrigger device for an oil storage tank floating plate includes a tank body 1, a floating plate 2, an outrigger portion 3, and a rope reel 4;

[0042] The tank body 1 is a main structure for storing oil. The floating plate 2 is movably arranged in the tank body 1 and can float up and down as the amount of oil increases or decreases;

[0043] The plurality of leg portions 3 are circumferentially arranged at the bottom of the floating plate 2 for supporting the floating plate 2 and adjusting its height. Meanwhile, the evenly distributed leg portions 3 can ensure stable support and balanced adjustment of the floating plate 2.

[0044] Specifically, the leg portion 3 includes a short leg 31 and a long leg 32. The short leg 31 is fixedly connected to the floating plate 2. A mounting groove 5 is provided at the lower portion of the short leg 31 for mounting and connecting the long leg 32. The upper portion of the long leg 32 is located in the mounting groove 5 and is rotatably connected to the short leg 31, so that the long leg 32 can rotate relative to the short leg 31 within a certain range.

[0045] In the initial state, the short leg 31 is vertically arranged to the bottom of the floating plate 2 to provide stable supporting force. The long leg 32 is parallel to the floating plate 2. The lower part of the long leg 32 is close to the pull wire 6, so that the long leg 32 can rotate smoothly when adjustment is needed, and the length of the leg part 4 can be adjusted by pulling the pull wire 6.

[0046] In implementation, the weight of one end of the long leg 32 close to the short leg 31 is greater than the weight of the other end. Specifically, one end of the long leg 32 close to the short leg 31 is a solid section, and the other end of the long leg 32 is a hollow section. In the initial state, the solid section of the long leg 32 will move downward due to gravity. At the same time, the hollow section of the long leg 32 will tend to move upward due to the buoyancy of the liquid in the tank body 1.

[0047] At the same time, since the long leg 32 is rotatably connected to the short leg 31, and the pull rope is connected to the long leg 32, the tension of the pull rope 6 will play a balancing role. Under the combined effect of the gravity of the solid section, the "buoyancy" of the hollow section and the tension of the pull rope 6, the long leg 32 will be kept in a horizontally retracted state.

[0048] Furthermore, in order to ensure the stability of the long leg 31 in the unfolded state, a limiting plate 9 is provided on the side of the short leg 31 close to the pull wire 6, and a pull rope 7 connected to the top of the long leg 32 passes through the limiting plate 9 and is connected to the top of the long leg 32.

[0049] In a specific implementation, when the long leg 32 is in the unfolded state, the long leg 32 is coaxially arranged with the short leg 31, and the top end of the long leg 32 abuts against the limit plate 9, thereby limiting further rotation of the long leg 32 and ensuring the stability and reliability of the long leg 32 in the unfolded state.

[0050] Initial state:

[0051] In the initial state, the short legs 31 are vertically arranged with the bottom of the floating plate 2 to provide a stable supporting force, and the long legs 32 are arranged parallel with the floating plate 2 , and the lower part of the long legs 32 is close to the pull wire 6 .

[0052] Expanded state:

[0053] When the height of the floating platform 2 needs to be adjusted, the pull line 6 is reeled in and released by the rope reel 4 to pull the long leg 32 to rotate. When the long leg 32 rotates to be coaxial with the short leg 31 and the top end abuts against the limit plate 9, the leg part 3 reaches the unfolded state.

[0054] The rope reel 4 is fixedly arranged on the top of the tank body 1 and is used to control the retraction and extension of the pull wire 6, so as to adjust the angle of the long leg 32 and adjust the length of the leg.

[0055] Specifically, by retracting and releasing the rope reel 4 , the tension of the pull wire 6 can be adjusted, thereby controlling the rotation of the long leg 32 and adjusting the length of the leg portion 3 .

[0056] In this embodiment, the rope reel 4 adopts a handwheel structure, and may also adopt an electric structure.

[0057] A group of pull wires 6 extending to the bottom of the floating plate 2 are reversely wound on the rope reel 4 (the specific winding is not shown in the figure), that is, the rope reel 4 is provided with two winding parts in opposite directions, which are used to wind two independent pull wires 6 respectively, to ensure that when the rope reel 4 is retracted and released, the two pull wires 6 can move synchronously, thereby realizing synchronous adjustment of all the long legs 32.

[0058] In this embodiment, the pull wire 6 adopts a brake wire structure.

[0059] Any one of the pull wires 6 is connected to a pull rope 1 7 connected to the top of the long leg 32 , and the other pull wire 6 is connected to a pull rope 2 8 connected to the upper part of the long leg 32 .

[0060] In this embodiment, in order to allow the pull wire 6 and the sub-pull rope 1 7 and the sub-pull rope 2 8 to be threaded and connected in an orderly manner, a conduit 10 for the pull wire 6 to be threaded is coaxially provided at the bottom of the floating plate 2. At the same time, through the provision of the conduit 10, a clear movement path can be provided for the pull wire 6 and the sub-pull ropes, and the pull wire 6 and the sub-pull ropes can be protected to prevent them from external damage.

[0061] In specific implementation, the pull rope 1 7 passes through the middle of the conduit 10 and is connected to the top of the corresponding long leg 32, and the pull rope 2 8 passes through the bottom of the conduit 10 and is connected to the upper part of the corresponding long leg 32, which can make the direction of the pull wire 6 and the pull rope 1 7 and the pull rope 2 8 clearer, avoiding mutual entanglement and interference;

[0062] Furthermore, the catheter 10 is circumferentially provided with a guide ring 11 that cooperates with the branch pull rope 1 7 and the branch pull rope 2 8. The guide ring 11 can guide and fix the branch pull rope 1 7 and the branch pull rope 2 8, guide the movement direction of the branch pull rope 1 7 and the branch pull rope 2 8, ensure that they pass along a preset path, and fix the branch pull rope to prevent it from shifting or loosening during movement; through the cooperation between the guide ring 11 and the branch pull rope, it can be more stable and smooth when passing through the catheter 10 and connecting with the corresponding long support leg 32, guiding the movement direction of the branch pull rope to prevent it from being entangled or stuck, thereby ensuring the smoothness of the leg adjustment.

[0063] When the rope reel 4 is being retracted or released, the two pull wires 6 will move synchronously.

[0064] Since the first and second pull ropes 7 and 8 are connected to the top and upper part of the long legs 32 respectively, the movement of the pull rope 6 will cause the angles of all the long legs 32 to change synchronously.

[0065] This synchronous adjustment method ensures that all legs can work in a coordinated manner, avoiding the tilting of the floating plate or uneven force caused by unsynchronized adjustment.

[0066] Specifically, when the rope reel 4 reels in the pull wire 6 connected to the top of the short leg 32, the pull wire 6 is tightened, and the branch pull rope 7 pulls the top of the long leg 32 to rotate around the rotating connection of the short leg 31. At this time, the pull wire 6 connected to the upper part of the short leg 32 is released. At this time, the long leg 32 moves in an unfolded state, thereby increasing the length of the leg part 4 and the height of the floating plate 2 rises.

[0067] When the rope reel 4 reverses, the pull line 6 connected to the upper part of the short leg 32 realizes the rope collection operation, and the pull line 6 is tightened. The long leg 32 returns to the initial angle under the action of its own gravity and the pull line 6. At this time, the pull line 6 connected to the top of the short leg 32 realizes the rope release, and the height of the floating plate 2 drops.

[0068] In a specific implementation, a plurality of hydraulic brackets cooperating with the bottom of the floating plate 2 may be provided around the bottom of the tank body 1 to adjust the height of the floating plate, or a scissor-type lifting frame may be provided at the bottom of the tank body 1 corresponding to the middle position of the bottom of the floating plate 2 to adjust the height of the floating plate.

[0069] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An external adjustable leg device for an oil storage tank floating plate, characterized in that: It comprises a tank body (1), a floating plate (2), a leg portion (3) and a rope reel (4); The floating plate (2) is movably arranged in the tank body (1); a plurality of leg portions (3) are circumferentially arranged at the bottom of the floating plate (2); the leg portions (3) include short legs (31) and long legs (32); the short legs (31) are fixedly connected to the floating plate (2); a mounting groove (5) is provided at the bottom of the short legs (31); and the upper portion of the long legs (32) is located in the mounting groove (5) and is rotatably connected to the short legs (31); The rope reel (4) is fixedly arranged on the top of the tank body (1), and a group of pull lines (6) extending to the bottom of the floating plate (2) are reversely wound on the rope reel (4). Any of the pull lines (6) is connected to a pull line 1 (7) connected to the top of the long leg (32), and the other pull line (6) is connected to a pull line 2 (8) connected to the upper part of the long leg (32).

2. The oil storage tank floating plate external adjustable leg device according to claim 1, characterized in that: A limiting plate (9) is provided on one side of the short leg (31) close to the pull wire (6).

3. The oil storage tank floating plate external adjustable leg device according to claim 2, characterized in that: When the long leg (32) is in an unfolded state, the long leg (32) and the short leg (31) are coaxially arranged, and the top end of the long leg (32) abuts against the limiting plate (9).

4. The oil storage tank floating plate external adjustable leg device according to claim 2, characterized in that: A pull rope 1 (7) connected to the top of the long leg (32) passes through the limiting plate (9) and is connected to the top of the long leg (32).

5. The oil storage tank floating plate external adjustable leg device according to claim 1, characterized in that: A conduit (10) for the pull wire (6) to pass through is coaxially provided at the bottom of the floating plate (2); the first pull rope (7) passes through the middle of the conduit (10) and is respectively connected to the top of the corresponding long support leg (32); and the second pull rope (8) passes through the bottom of the conduit (10) and is respectively connected to the upper part of the corresponding long support leg (32).

6. The oil storage tank floating platform external adjustable leg device according to claim 5, characterized in that: The conduit (10) is circumferentially provided with a guide ring (11) that cooperates with the first pull rope (7) and the second pull rope (8).

7. The oil storage tank floating plate external adjustable leg device according to claim 2, characterized in that: In the initial state, the short leg (31) is arranged perpendicularly to the bottom of the floating plate (2), the long leg (32) is arranged parallel to the floating plate (2), and the lower part of the long leg (32) is close to the pull wire (6).

8. The oil storage tank floating platform external adjustable leg device according to claim 7, characterized in that: The weight of one end of the long leg (32) close to the short leg (31) is greater than the weight of the other end.

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