Metallic hard seal structure for floating disc

Abstract

The utility model discloses a metal hard sealing structure of float bowl, including float box, sealing component, bolt, the float box is a plurality of, and the sealing component is arranged between two adjacent float boxes, the sealing component includes first sealing piece, second sealing piece, the material of first sealing piece is metal, and the material of second sealing piece is non -metal, the side plate of two adjacent float boxes and first sealing piece are fastened through the bolt, and second sealing piece is located below first sealing piece, and the freedom degree of second sealing piece is formed restriction to the side plate of two adjacent float boxes and first sealing piece. The utility model can ensure that the sealing between float box and float box obtains the guarantee for a long time.

Description

Technical Field

[0001] This utility model relates to a metal hard-seal structure for a floating roof. Background Technology

[0002] A floating roof is a type of floating cover that floats on the surface of the liquid in a tank. By covering the liquid surface, it reduces oil evaporation losses and is suitable for storing highly volatile liquid petroleum products such as gasoline and aviation kerosene. This equipment can reduce oil evaporation losses by 85% to 96% and is typically made of materials such as aluminum alloy and stainless steel.

[0003] Several pontoons are assembled and fastened with bolts to form the floating platform. To improve sealing performance, seals are usually used between the pontoons. The seals are generally made of non-metallic materials. However, non-metallic sealing strips will age after long-term use, leading to loosening of the seal and incomplete sealing. In addition, non-metallic sealing strips have poor fire resistance. When a fire occurs above the floating platform, the heat can easily burn through the non-metallic sealing strips, and the fire can then penetrate the gaps between the pontoons to reach the bottom of the floating platform, causing a larger fire. Utility Model Content

[0004] This invention provides a metal hard-seal structure for a floating roof, which can ensure the long-term sealing between floating boxes.

[0005] The technical solutions to the above technical problems are as follows:

[0006] The floating roof's metal hard-seal structure includes pontoons, sealing components, and bolts. There are multiple pontoons, and a sealing component is arranged between two adjacent pontoons. The sealing component includes a first sealing element and a second sealing element. The first sealing element is made of metal, and the second sealing element is made of non-metal. The side plates of the two adjacent pontoons and the first sealing element are fastened together by bolts. The second sealing element is located below the first sealing element. The side plates of the two adjacent pontoons and the first sealing element restrict the degree of freedom of the second sealing element.

[0007] Furthermore, each pontoon has a receiving portion on its side plate for engaging with the second seal, a portion of which is located in the receiving portions on two adjacent pontoons, and the receiving portions of the two adjacent pontoons support the second seal.

[0008] Furthermore, the side plates of the pontoon are bent from the outside in to form the receiving portion.

[0009] Furthermore, the first seal is made of stainless steel, and the second seal is made of XPE or polytetrafluoroethylene.

[0010] Furthermore, it also includes a leg assembly. Each pontoon has a corner bracket fixed on its lower surface at the wide side. When any two pontoons are joined at the wide side, the corner brackets on the two pontoons are assembled to form a receiving cavity. One end of the leg assembly is engaged with the receiving cavity. One end of the leg assembly is fixed to the corner bracket by fasteners. The leg assembly is also fastened to the side plate of the pontoon by bolts.

[0011] Furthermore, the outrigger assembly includes an outrigger rod, an outrigger cover, a first connecting plate, a diagonal brace, and a second connecting plate. The outrigger rod is fixed to the outrigger cover, the outrigger cover mates with the receiving cavity, the outrigger cover is fixed to the corner bracket, the first connecting plate is fixed to the outrigger rod, one end of the diagonal brace is fixed to the first connecting plate, the other end of the diagonal brace is fixed to one end of the second connecting plate, and the other end of the second connecting plate is folded to form a curved portion, which is fastened to the side plate.

[0012] In this invention, the sealing component consists of a first metal seal and a second non-metallic seal. After prolonged use, the metal first seal between adjacent floats, along with bolts securing the two floats and the first seal, prevents loosening between adjacent floats even if the second non-metallic seal ages, thus ensuring the seal between the floats. This sealing component is particularly suitable for tanks storing highly hazardous liquids, such as highly toxic or corrosive liquids. Attached Figure Description

[0013] Figure 1 This is a perspective view of the metal hard-seal structure of the floating disc of this utility model.

[0014] Figure 2 This is a partial cross-sectional view of the floating roof.

[0015] Figure 3 for Figure 2 Enlarged view of part P in the image.

[0016] Figure 4 This is a structural diagram of the bottom surface of the floating roof.

[0017] Figure 5 This is a structural diagram of the outrigger assembly.

[0018] Float 1, side plate 1a, receiving part 1b, bottom plate 1c, cover plate 1d, angle steel 1e, sealing component A, first seal 2, second seal 3, bolt 4, angle bracket 5, receiving cavity 6, outrigger assembly B, outrigger rod 7, outrigger cover 8, first connecting plate 9, diagonal brace 10, second connecting plate 11, bending part 12. Detailed Implementation

[0019] like Figures 1 to 5As shown, the metal hard-seal structure of the floating roof of this utility model includes a floating box 1, a sealing component A, and bolts 4. There are multiple floating boxes 1, each of which consists of a box body and a honeycomb core fixed inside the box body. The box body is made of stainless steel or aluminum alloy. The box body includes a bottom plate 1c, side plates 1a, a cover plate 1d, and an angle steel 1e. There are multiple side plates 1a, and each side plate 1a is fixed to the bottom plate 1c. Preferably, a whole stainless steel plate is bent 90° at multiple locations to form a bottom plate 1c and multiple side plates 1a. The upper end of each side plate 1a is provided with a through hole for the bolts 4 to pass through. The cover plate 1d is welded to the side plate 1a, and the angle steel 1e is welded to the bottom plate 1c. The angle steel is also provided with a through hole for the bolts 4 to pass through.

[0020] A sealing component A is configured between two adjacent floats 1. The sealing component A includes a first seal 2 and a second seal 3. The first seal 2 is made of metal, specifically stainless steel. The second seal 3 is made of non-metal, specifically XPE or polytetrafluoroethylene (PTFE). PTFE has excellent heat and cold resistance and can be used long-term at temperatures ranging from -180°C to 260°C. This material is resistant to acids, alkalis, and various organic solvents, and is almost insoluble in all solvents. Therefore, PTFE also has aging resistance, making it particularly suitable for sealing tanks containing highly hazardous liquid media. The side plates 1a of the two adjacent floats 1 and the first seal 2 are fastened together by bolts 4. The screws of the bolts 4 pass through the side plates 1a and the first seal 2 and connect to nuts, thereby securing the side plates 1a and the first seal 2 of the two adjacent floats 1 into a single unit.

[0021] The second seal 3 is located below the first seal 2. The side plates 1a of the two adjacent floats 1 and the first seal 2 restrict the degree of freedom of the second seal 3. The second seal 3 is clamped by the side plates 1a of the two adjacent floats 1, and the upper end of the second seal 3 abuts against the first seal 2. Preferably, each side plate 1a of the float 1 is provided with a receiving portion 1b for cooperating with the second seal 3. A part of the second seal 3 is located in the receiving portion 1b on the two adjacent floats 1. The receiving portion 1b of the two adjacent floats 1 supports the second seal 3, thereby restricting the degree of freedom of the second seal 3.

[0022] In this invention, the side plate 1a of the float box 1 is bent from the outside to the inside to form the receiving part 1b. For example, the outer wall of the side plate 1a is stamped by a stamping device to make the side plate 1a concave from the outside to the inside, thereby forming the receiving part 1b.

[0023] This utility model also includes a leg assembly B. Each float 1 has a corner bracket 5 fixed on its lower surface at the wide side. The corner bracket 5 is fixed to the lower surface of the float 1 by welding. The corner bracket 5 is formed by any two floats 1 joined together at the wide side, and the corner brackets 5 on the two floats 1 are spliced ​​together to form a receiving cavity 6. One end of the leg assembly B is engaged with the receiving cavity 6. One end of the leg assembly B is fixed to the corner bracket 5 by fasteners. The leg assembly B is also fastened to the side plate 1a of the float 1 by bolts 4.

[0024] The outrigger assembly B includes an outrigger rod 7, an outrigger cover 8, a first connecting plate 9, a diagonal brace 10, and a second connecting plate 11. The outrigger rod 7 is fixed to the outrigger cover 8, which mates with the receiving cavity 6. The outrigger cover 8 is fixed to the corner bracket 5 by fasteners, preferably bolts. The first connecting plate 9 is fixed to the outrigger rod 7. One end of the diagonal brace 10 is fixed to the first connecting plate 9, and the other end of the diagonal brace 10 is fixed to one end of the second connecting plate 11. The other end of the second connecting plate 11 is folded to form a bent portion 12, which is fastened to the side plate 1a by bolts 4. Because the outrigger assembly B has a bent portion 12, which bends according to its position to mate with the side plate 1a, it is easy to fit the bent portion 12 to the side plate 1a. After the bent portion 12 is fastened to the side plate 1a by bolts, the firmness of the connection between the bent portion 12 and the side plate 1a is ensured. There are multiple first connecting plates 9, diagonal braces 10, and second connecting plates 11. Therefore, the bent portion 12 in each outrigger assembly B can be fastened to the side plates 1a on both float boxes 1 at the same time, thereby increasing the stability of the outrigger assembly B after it is connected to the float box 1.

Claims

1. A metal hard-seal structure for a floating roof, comprising a float box (1), a sealing component (A), and bolts (4), wherein there are multiple float boxes (1), and a sealing component (A) is disposed between two adjacent float boxes (1), characterized in that, The sealing component (A) includes a first sealing element (2) and a second sealing element (3). The first sealing element (2) is made of metal, and the second sealing element (3) is made of non-metal. The side plates (1a) of the two adjacent floats (1) and the first sealing element (2) are fastened by bolts (4). The second sealing element (3) is located below the first sealing element (2). The side plates (1a) of the two adjacent floats (1) and the first sealing element (2) restrict the degree of freedom of the second sealing element (3).

2. The metal hard-seal structure of the floating roof according to claim 1, characterized in that, Each float (1) has a receiving portion (1b) on its side plate (1a) for cooperating with the second seal (3). A portion of the second seal (3) is located in the receiving portions (1b) on two adjacent floats (1), and the receiving portions (1b) of the two adjacent floats (1) support the second seal (3).

3. The metal hard-seal structure of the floating roof according to claim 2, characterized in that, The side plate of the float (1) is bent from the outside to the inside to form the receiving part (1b).

4. The metal hard-seal structure of the floating roof according to claim 1, characterized in that, The first seal (2) is made of stainless steel, and the second seal (3) is made of XPE or polytetrafluoroethylene.

5. The metal hard-seal structure of the floating roof according to claim 1, characterized in that, It also includes a leg assembly (B). Each float (1) has a corner bracket (5) fixed on the lower surface at the wide side. After any two floats (1) are joined at the wide side, the corner brackets (5) on the two floats (1) are assembled to form a receiving cavity (6). One end of the leg assembly (B) is engaged with the receiving cavity (6). One end of the leg assembly (B) is fixed to the corner bracket (5) by fasteners. The leg assembly (B) is also fastened to the side plate (1a) of the float (1) by bolts (4).

6. The metal hard-seal structure of the floating roof according to claim 5, characterized in that, The outrigger assembly (B) includes an outrigger rod (7), an outrigger cover (8), a first connecting plate (9), a diagonal brace (10), and a second connecting plate (11). The outrigger rod (7) is fixed to the outrigger cover (8), the outrigger cover (8) is fitted with the receiving cavity (6), the outrigger cover (8) is fixed to the corner bracket (5), the first connecting plate (9) is fixed to the outrigger rod (7), one end of the diagonal brace (10) is fixed to the first connecting plate (9), and the other end of the diagonal brace (10) is fixed to one end of the second connecting plate (11). The other end of the second connecting plate (11) is folded to form a bent portion (12), which is fastened to the side plate (1a).

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