Anti-explosion floating disc unit with elastic sealing function and anti-explosion floating disc

Abstract

The present application relates to an anti-explosion floating disc unit with elastic sealing function, comprising a plate-shaped body arranged in a cylinder and a sealing part arranged outside the body. A power assembly is arranged between the body and the sealing part, which can apply an outward thrust to the sealing part, so as to drive the sealing part to move relative to the body and abut against the inner wall of the cylinder. The power assembly is arranged to increase the thrust when the diameter of the cylinder increases, and to decrease the thrust when the diameter of the cylinder decreases. The anti-explosion floating disc unit with elastic sealing function can improve the sealing capacity of the anti-explosion floating disc and prevent the sealing failure of the floating disc.

Description

Technical Field

[0001] This invention relates to an explosion-proof floating roof unit with elastic sealing function, and an explosion-proof floating roof including the explosion-proof floating roof unit. Background Technology

[0002] In industrial production, floating roofs are common devices used in the storage of fluids such as oil. These devices float on the surface of the liquid in containers like oil tanks, effectively isolating the fluid below from the external space above, thus preventing fluid leakage. To ensure the effectiveness of the seal, the floating roof needs to have a certain degree of deformability, ensuring that it remains in contact with the side wall of the container even when the tank deforms, sealing any gaps created between the container and the floating roof.

[0003] Existing floating roofs typically achieve container sealing through arrayed springs and spring compensation. When the container deforms, the springs and springs also deform accordingly. However, these springs and springs exert the greatest force on the tank wall initially. As the tank wall deforms, the springs and springs deform as well, reducing the compressive force on the tank wall and making them prone to losing their sealing effect. Simultaneously, the springs and springs initially exert the greatest outward force on the inner wall of the container, increasing the risk of outward deformation of the tank wall. Summary of the Invention

[0004] To address the technical problems described above, this invention aims to provide a blast-resistant floating roof unit with elastic sealing function. This blast-resistant floating roof unit with elastic sealing function can improve the sealing capability of the blast-resistant floating roof and prevent sealing failure.

[0005] According to a first aspect of the present invention, an explosion-proof floating roof unit with an elastic sealing function is provided, comprising a plate-shaped body disposed within a cylinder, and a sealing portion disposed on the outer side of the body. A power assembly is disposed between the body and the sealing portion, the power assembly being capable of applying an outward thrust to the sealing portion, thereby causing the sealing portion to move relative to the body and abut against the inner wall of the cylinder.

[0006] The power assembly is configured to increase the thrust when the diameter of the cylinder increases and decrease the thrust when the diameter of the cylinder decreases.

[0007] In a preferred embodiment, the power assembly includes a deformable frame consisting of connecting rods and an elastic element capable of deforming the frame. The frame is configured to be generally rhomboid, having a first end connected to a seal, a second end opposite the first end connected to the body, and a third and a fourth end adjacent to the first end.

[0008] The two ends of the elastic element are respectively connected to the third end and the fourth end, such that the arrangement direction of the elastic element is perpendicular to the radial direction of the cylinder.

[0009] In a preferred embodiment, a limiting component is also connected to the power assembly, which can restrict the movement direction of the first end and the second end, so that the first end and the second end can only move radially along the cylinder.

[0010] In a preferred embodiment, the limiting component includes a first gear pair connected between the frame and the body, and a second gear pair connected between the seal and the body.

[0011] In a preferred embodiment, the body is made of fiberglass, and a reinforcing layer made of polyethylene is also provided inside the body.

[0012] In a preferred embodiment, a flame-retardant and electrical-resistant layer is further provided on the outer end face of the body and the sealing part, the flame-retardant and electrical-resistant layer being made of polyurea elastic coating.

[0013] In a preferred embodiment, an oil scraper is provided at the upper and lower ends of the sealing part, and the free end of the oil scraper away from the sealing part can abut against the inner wall of the cylinder together with the sealing part.

[0014] In a preferred embodiment, an oleophobic layer is further coated on the outer end face of the scraper, the oleophobic layer being made of zirconium oxide material.

[0015] According to a second aspect of the present invention, an explosion-proof floating roof is provided, comprising a plurality of the aforementioned explosion-proof floating roof units with elastic sealing function.

[0016] In a preferred embodiment, a welding wire is provided on the side wall of the body, and the welding wire is arranged along the axial direction of the cylinder.

[0017] In a preferred embodiment, a labyrinth groove is also provided on the side wall of the floating disc unit. Attached Figure Description

[0018] The present invention will now be described with reference to the accompanying drawings.

[0019] Figure 1 A schematic diagram of an explosion-proof floating roof unit with resilient sealing function according to an embodiment of the present invention is shown.

[0020] Figure 2 for Figure 1 A schematic diagram of the power components of the blast-resistant floating roof unit is shown.

[0021] Figure 3This is a schematic diagram showing the relationship between the thrust of the frame on the inner wall of the cylinder and the deformation of the cylinder.

[0022] Figure 4 for Figure 1 A schematic diagram of the main body of the blast-resistant floating roof unit shown.

[0023] In this application, all drawings are schematic and are used only to illustrate the principles of the invention, and are not drawn to scale. Detailed Implementation

[0024] The invention will now be described with reference to the accompanying drawings. In this document, "inner end" or a similar term refers to the end furthest from the inner wall of the cylinder; "outer end" or a similar term refers to the end closest to the inner wall of the cylinder.

[0025] Figure 1 A schematic diagram of an explosion-proof floating roof unit 100 with elastic sealing function according to an embodiment of the present invention is shown. The plurality of floating roof units 100 can be connected to form a disc-shaped explosion-proof floating roof (not shown). The explosion-proof floating roof can be disposed on the liquid surface of the cylinder 1, thereby covering the fluid inside the cylinder 1 and preventing fluid loss from the cylinder 1.

[0026] like Figure 1 As shown, the explosion-proof floating roof unit 100 with elastic sealing function includes a body 10 disposed inside a cylinder 1. The body 10 is flat. A sealing part 20 is provided on the outer side of the body 10. The sealing part 20 is made of a deformable elastic material, such as rubber. Thus, when the sealing part 20 abuts against the inner wall of the cylinder 1, it can seal the gap between the sealing part 20 and the cylinder 1, thereby achieving a sealing effect.

[0027] like Figure 1 As shown, a power assembly 30 is disposed between the body 10 and the sealing part 20. The power assembly 30 can apply an outward thrust to the sealing part 20, thereby driving the sealing part 20 to move relative to the body 10. Thus, when the side wall of the cylinder 1 deforms outward, causing its diameter to increase, the power assembly 30 can push the sealing part 20 outward, allowing the sealing part 20 to continue to abut against the inner wall of the cylinder 1, achieving a sealing effect. When the side wall of the cylinder 1 deforms inward, causing its diameter to decrease, the thrust provided by the power assembly 30 can also hinder this deformation process, allowing the cylinder 1 to maintain its original shape. When the force of the inward deformation of the side wall of the cylinder 1 is large, the sealing part 20 can also overcome the thrust of the power assembly 30 and move inward, thereby adapting to the diameter of the cylinder 1 and continuing to abut against the inner wall of the cylinder 1, achieving a sealing effect.

[0028] Figure 2 for Figure 1 A schematic diagram of the power assembly 30 of the blast-resistant floating roof unit 100 is shown. Figure 2 As shown, the power assembly 30 includes a frame 31 disposed between the body 10 and the sealing part 20, and an elastic member 32 connected to the frame 31. The frame 31 is rhomboid in shape. Furthermore, the frame 31 is hinged by four connecting rods 33 connected end-to-end, allowing the frame 31 to deform under external force.

[0029] like Figure 2 As shown, the frame 31 has a first end 311 connected to the body 10, a second end 312 opposite to the first end 311 and connected to the sealing part 20, and a third end 313 and a fourth end 314 adjacent to the first end 311. The two ends of the elastic member 32 are respectively connected to the third end 313 and the fourth end 314. It is easy to understand that the arrangement direction of the elastic member 32 is the axial direction of the cylinder 1, which is perpendicular to the direction of change of the diameter of the cylinder 1 (i.e., the radial direction of the cylinder 1).

[0030] like Figure 2 As shown, a limiting component 40 is also connected to the power assembly 30. The limiting component 40 includes a first gear pair 41 connected between the frame 31 and the body 10, and a second gear pair connected between the sealing part 20 and the frame 31. Both the first gear pair 41 and the second gear pair consist of two meshing first gears 43 and second gears 44, thus forming a high pair with only one degree of freedom. The ends of two adjacent connecting rods 33 near the first end 311 or the second end 312 are fixedly connected to the first gear 43 and the second gear 44, respectively. Therefore, under the constraint of the first gear pair 41 and the second gear pair, the first end 311 and the second end 312 of the frame 31 can only move radially along the cylinder 1.

[0031] When multiple blast-resistant floating units 100 together form a complete blast-resistant floating platform, after the sealing part 20 abuts against the inner wall of the cylinder 1, the main body 10 will be fixed in the radial direction of the cylinder 1 and cannot move radially. At this time, when the cylinder 1 deforms inward, it will drive the second end 312 to move synchronously, causing the frame 31 to deform, which in turn causes the elastic element 32 to undergo elastic deformation, resulting in a change in the elastic force of the elastic element 32, thereby causing a change in the thrust of the power assembly 30 on the inner wall of the cylinder 1.

[0032] When the cylinder 1 deforms inward, the sealing part 20 remains in contact with the inner wall of the cylinder 1. Therefore, the thrust of the power assembly 30 on the inner wall of the cylinder 1 and the pressure of the cylinder 1 on the frame 31 are action and reaction forces, and their magnitudes are always equal. Thus, the correspondence between the pressure of the cylinder 1 on the frame 31 and the deformation of the cylinder 1 can be regarded as the correspondence between the thrust of the frame 31 on the inner wall of the cylinder 1 and the deformation of the cylinder 1. This correspondence will be described in detail below.

[0033] When the sealing part 20 is always in contact with the inner wall of the cylinder 1, as the inner wall of the cylinder 1 deforms inward, according to the principle of virtual work, we can obtain: Fy*dy=Fx*dx. Where Fy represents the pressure of the cylinder 1 on the frame 31, dy represents the deformation of the cylinder 1, Fx represents the elastic force of the elastic element 32, and dx represents the deformation of the elastic element 32.

[0034] Let the length of connecting rod 33 be b, the center distance between the first gear 43 and the second gear 44 be c, the initial length of elastic element 32 be l, and the elastic modulus be k. Then: .

[0035] .

[0036] .

[0037] Figure 3 This is a schematic diagram showing the relationship between the thrust of the frame 31 on the inner wall of the cylinder 1 and the deformation of the cylinder 1. Figure 3 In the curves shown, the elastic modulus of elastic element 32 is k=1000 N / m, the initial length of elastic element 32 is l=0.03 m, and b=0.06 m.

[0038] Depend on Figure 3 As shown at point A, when the inward change of the inner wall of cylinder 1 is 0, the length change of elastic element 32 is also 0, and the thrust of frame 31 on the inner wall of cylinder 1 is 0. Figure 3 As shown at point B, as the inward change x of the inner wall of cylinder 1 increases, the elastic element 32 is gradually stretched, thereby causing the thrust Fy of the frame 31 on the inner wall of cylinder 1 to gradually increase. Figure 3 As shown at point C, when the inward change of the inner wall of cylinder 1, x, increases to (xc) / 2, Fy increases to its maximum value. Subsequently, as the inward change of the inner wall of cylinder 1 continues to increase, Fy gradually decreases. Figure 3 As shown at point D, when x continues to increase to the limit position, the elastic element 32 will be stretched to the limit position, at which point the elastic element 32 will fail.

[0039] In summary, by adjusting parameters such as the elastic modulus, initial length l of the elastic element 32, and length b of the connecting rod 33, the operator can ensure that when the cylinder 1 is in its undeformed initial state, the elastic element 32 is in a stretched state, and the thrust Fy of the frame 31 on the inner wall of the cylinder 1 is located between points C and D. At this time, when the inner wall of the cylinder 1 deforms outward (equivalent to a decrease in inward deformation), the thrust Fy of the frame 31 on the inner wall of the cylinder 1 will increase. Conversely, when the inner wall of the cylinder 1 deforms inward (equivalent to an increase in inward deformation), the thrust Fy of the frame 31 on the inner wall of the cylinder 1 will decrease. This outward deformation of the inner wall of the cylinder 1 is more conducive to increasing the sealing effect of the sealing part 20. When the inner wall of the cylinder 1 deforms inward, because the diameter of the cylinder 1 decreases, even if the thrust Fy of the frame 31 on the inner wall of the cylinder 1 decreases, the sealing part 20 can still smoothly abut against the inner wall of the cylinder 1.

[0040] In existing blast-resistant floating roofs, the elastic element 32 is often arranged parallel to the direction of change of the inner wall of the cylinder 1. As a result, when the inner wall of the cylinder 1 deforms outward, the state of the elastic element 32 will gradually change from a compressed state to a natural state, which will reduce its thrust on the inner wall of the cylinder 1. This can easily cause the sealing part 20 to fail to abut against the inner wall of the cylinder 1, leading to sealing failure.

[0041] Figure 4 for Figure 1 A schematic diagram of the body 10 of the blast-resistant floating roof unit 100 is shown. Figure 4 As shown, in this invention, the body 10 is made of fiberglass, a material with low density that ensures the body 10 floats on the surface of the fluid. Simultaneously, this material possesses good tensile strength, enabling it to withstand significant deformation. Furthermore, this material exhibits good corrosion resistance, reducing the probability of the body 10 being corroded by the fluid inside the cylinder 1, thereby improving the stability of the body 10.

[0042] Furthermore, a reinforcing layer 12 is also provided within the body 10. The reinforcing layer is preferably made of polyethylene material. The reinforcing layer 12 further enhances the tensile strength and stability of the body 10, thereby helping to improve the service life of the body 10.

[0043] In a preferred embodiment, a flame-retardant and electrical-resistant layer (not shown) is further provided on the outer end face of the body 10. This flame-retardant and electrical-resistant layer can be made, for example, of a polyurea elastic coating. This material has a high ignition point, reducing the probability of combustion after flammable liquids evaporate into the air. Simultaneously, this material has good insulation properties, effectively preventing explosions after flammable liquids evaporate.

[0044] like Figure 4As shown, welding wire 15 is also provided on the main body 10. Thus, operators can weld multiple blast-resistant floating roof units 100 together using the welding wire 15 to form a disc-shaped blast-resistant floating roof. Preferably, the welding wire 15 is disposed on the side wall 16 of the main body 10 and arranged along the axial direction of the cylinder 1. This ensures that no weld seams remain on the upper and lower end faces of the blast-resistant floating roof after welding, resulting in a flat, integrated circular surface on both ends, thereby improving the sealing performance of the blast-resistant floating roof.

[0045] In an embodiment not shown, a labyrinth groove is also provided at the joint of the sidewall 16 of the floating roof unit 100. The labyrinth groove can increase the welding area between any two adjacent floating roof units 100, thereby improving the reliability of the connection between the floating roof units 100 and thus improving the impact resistance of the entire blast-resistant floating roof.

[0046] It should be noted that the structure of this maze is well known to those skilled in the art, and a detailed description of it will be omitted here.

[0047] like Figure 1 As shown, oil scraper plates 28 are respectively provided at the upper end 26 and lower end 27 of the sealing part 20. The oil scraper plate 28 is designed in an arc shape, so that its free end 281 near the inner wall of the cylinder 1 can abut against the inner wall of the cylinder 1 together with the sealing part 20. When the liquid level in the cylinder 1 changes, the oil scraper plate 28 can slide on the inner wall of the cylinder 1 with the change of liquid level, scraping off the fluid remaining on the inner wall, preventing the fluid from adhering to the inner wall of the cylinder 1 and flowing above the floating plate unit 100 and corroding the floating plate unit 100.

[0048] Furthermore, an oleophobic layer 29 is coated on the outer end face of the scraper blade 28. The oleophobic layer 29 can be made of, for example, zirconium oxide. The oleophobic layer 29 prevents fluids such as petroleum from adhering to the scraper blade 28, thereby ensuring that the scraper blade 28 can smoothly remove residual fluids on the inner wall of the cylinder 1 and prevent it from failing.

[0049] The following is a brief description of the operation of the explosion-proof floating roof unit 100 with elastic sealing function according to the present invention.

[0050] The explosion-proof floating roof unit 100 with elastic sealing function of the present invention is used to prevent the volatilization and loss of oil and gas inside the cylinder 1. When using the explosion-proof floating roof unit 100, the operator first needs to select an explosion-proof floating roof unit 100 of appropriate size according to the size of the cylinder 1. Then, according to the diameter of the cylinder 1, the elastic modulus k of the elastic element 32, the initial length l of the elastic element 32, and the length b of the connecting rod 33 are adjusted so that when the cylinder 1 is in the undeformed initial state, the elastic element 32 is in a stretched state, and the thrust Fy of the frame 31 on the inner wall of the cylinder 1 is located at... Figure 3 Between points C and D.

[0051] Therefore, when the inner wall of the cylinder 1 deforms outward, the thrust Fy exerted by the frame 31 on the inner wall of the cylinder 1 will increase. Conversely, when the inner wall of the cylinder 1 deforms inward, the thrust Fy exerted by the frame 31 on the inner wall of the cylinder 1 will decrease.

[0052] After the dimensions of the floating roof unit 100 are adjusted, the operators can weld multiple explosion-proof floating roof units 100 together using welding wire 15 to form a complete disc-shaped floating roof.

[0053] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A blast-resistant floating roof unit (100) with elastic sealing function, comprising: A plate-shaped body (10) is disposed inside the cylinder (1), and a sealing part (20) is disposed on the outside of the body. A power assembly (30) is disposed between the body and the sealing part. The power assembly can apply an outward thrust to the sealing part, thereby driving the sealing part to move relative to the body and abut against the inner wall of the cylinder. The power assembly is configured to increase the thrust when the diameter of the cylinder increases and decrease the thrust when the diameter of the cylinder decreases. The power assembly includes a deformable frame (31) composed of connecting rods (33) and an elastic element (32) capable of deforming the frame. The frame is rhomboid in shape and has a first end (311) connected to a sealing portion and a second end (312) connected to the body opposite to the first end, as well as a third end (313) and a fourth end (314) adjacent to the first end. The two ends of the elastic element are respectively connected to the third end and the fourth end, such that the arrangement direction of the elastic element is perpendicular to the radial direction of the cylinder. The elastic element is configured to increase the thrust of the frame on the cylinder when the inner wall of the cylinder deforms outward, and decrease the thrust of the frame on the cylinder when the inner wall of the cylinder deforms inward, and adapt to the inward deformation of the inner wall of the cylinder. A limiting component (40) is also connected to the power assembly. The limiting component can restrict the movement direction of the first end and the second end, so that the first end and the second end can only move radially along the cylinder. The limiting component includes a first gear pair (41) connected between the frame and the body and a second gear pair connected between the sealing part and the frame.

2. The explosion-proof floating roof unit with elastic sealing function according to claim 1, characterized in that, The main body is made of fiberglass material, and a reinforcing layer (12) is also provided in the main body, which is made of polyethylene material.

3. The explosion-proof floating roof unit with elastic sealing function according to claim 1, characterized in that, A flame-retardant and electrical-resistant layer is also provided on the outer end face of the body and the sealing part, and the flame-retardant and electrical-resistant layer is made of polyurea elastic coating.

4. The explosion-proof floating roof unit with elastic sealing function according to claim 1, characterized in that, Oil scraper (28) is provided at the upper and lower ends of the sealing part, and the free end of the oil scraper away from the sealing part can abut against the inner wall of the cylinder together with the sealing part.

5. The explosion-proof floating roof unit with elastic sealing function according to claim 4, characterized in that, An oleophobic layer (29) is also coated on the outer end face of the scraper, the oleophobic layer being made of zirconium oxide material.

6. A blast-resistant floating roof, wherein the blast-resistant floating roof is constructed in a disc shape and includes a plurality of blast-resistant floating roof units having an elastic sealing function according to any one of claims 1-5.

7. The blast-resistant floating roof according to claim 6, characterized in that, Welding wire (15) is provided on the side wall (16) of the body, and the welding wire is arranged along the axial direction of the cylinder.

8. The blast-resistant floating roof according to claim 7, characterized in that, A labyrinth groove is also provided on the side wall of the floating unit.

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