Double-layer sealed portable replacement type full-liquid floating disc

Abstract

The application discloses a double-layer sealed portable replacement type full-liquid floating disc, and relates to the technical field of inner floating disc for storage tanks. The double-layer sealed portable replacement type full-liquid floating disc comprises an upper floating unit, a lower floating unit, a floating unit connecting stand, a connecting sleeve and a sealing rubber ring. The height of the lower floating unit is about 40% of the total height. An oil sealing rubber ring is arranged on the upper cover plate of the lower floating unit and is adhered to the cover plate through a composite material. The upper and lower floating units are sealed at the connecting position of the two tanks through a groove and the sealing rubber ring, and the connecting column welded to the lower floating unit is inserted into the sleeve of the upper floating unit and is screwed into a nut to apply force so as to achieve a better sealing effect. The application divides the traditional floating box unit body into two parts according to the actual oil immersion depth, seals the two parts separately, and connects the two parts together through a special connecting mechanism, so that when the oil immersion part is damaged and oil is poured, the upper part of the floating box is not affected, the floating box can be quickly disassembled, and the maintenance cost is greatly reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of internal floating roofs for storage tanks, specifically relating to a double-sealed, portable, replaceable, fully liquid-contact floating roof. Background Technology

[0002] Floating roof systems are widely used in oil storage, effectively reducing evaporation losses of oil and gas in storage tanks. The floating roof is placed inside the tank and floats on the surface of the oil. When the oil level rises and falls due to filling and emptying, the floating roof remains attached to the oil surface, ensuring that the oil never comes into contact with air and poses a hazard. Furthermore, in the event of a fire or a severe impact to the tank, the floating roof can isolate flames and maintain oil level stability, protecting the stored oil. Currently, the most widely used type globally is the self-floating, modular internal floating roof. This type features modular components, facilitating manufacturing, transportation, and assembly. Most floating roofs now employ a honeycomb structure internally, reducing weight while increasing strength and buoyancy. For these reasons, internal floating roofs are widely used in the storage of volatile liquids such as petroleum.

[0003] Currently, the floating roofs used in China are mainly pontoon-type floating roofs and fully wetted floating roofs. Traditional pontoon-type floating roofs have thinner walls, making welding difficult and resulting in lower tensile strength and impact resistance. Furthermore, a large space exists between the pontoon-type floating roof and the oil surface; the mixing of oil and gas can corrode the floating roof and pose a risk of combustion and explosion, leading to higher maintenance risks and lower safety and reliability. Fully wetted floating roofs represent a comprehensive technological improvement over pontoon-type floating roofs. These devices have multiple buoyancy units, typically with honeycomb baffles inside, and eliminate the oil and gas space, resulting in higher structural strength, more stable operation, and greater safety.

[0004] Although fully wetted floating roofs have many advantages, there are still some problems with this type of equipment:

[0005] 1) The buoyancy unit is welded, which is difficult to weld and the quality of the weld is hard to guarantee. If welding defects occur, it will lead to the risk of oil leakage.

[0006] 2) The floating roof is composed of buoyancy units, each of which is only about 40% immersed in the oil. However, when the part of the buoyancy unit in contact with the oil is damaged, the entire unit needs to be replaced. This results in increased maintenance costs in the later stages.

[0007] 3) The buoyancy units are simply spliced ​​together and assembled, resulting in poor mechanical properties. They are prone to cracking when subjected to impact, and oil is easily leaked, which can lead to the sinking of the floating roof. Summary of the Invention

[0008] To overcome the shortcomings of the prior art, the present invention aims to provide a portable, replaceable, fully wetted floating roof with a double-layer seal. This floating roof has a longer service life, more stable operation, and lower maintenance costs.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0010] A double-layer sealed portable replaceable fully liquid-contact floating roof includes an upper floating unit, a lower floating unit, a floating unit connecting column, a connecting sleeve, and a sealing rubber ring; the upper floating unit includes an upper floating unit housing, an upper floating unit cover plate, and an internal honeycomb assembly.

[0011] Furthermore, the bottom of the upper floating unit housing has a groove, and four identical circular holes are formed on the surface of the groove; the upper floating unit cover plate also has four circular holes, the size and position of which are consistent with the circular holes in the groove at the bottom of the upper floating unit housing; the honeycomb assembly inside the upper floating unit is bonded to the upper floating unit housing and the upper floating unit cover plate by a composite material; the lower floating unit includes a lower floating unit housing, a lower floating unit cover plate, and a honeycomb assembly inside the lower floating unit; the upper floating unit cover plate has four circular holes, the size and position of which are consistent with the circular holes in the groove at the bottom of the upper floating unit housing; the honeycomb assembly inside the upper floating unit is bonded to the upper floating unit housing and the upper floating unit cover plate by a composite material.

[0012] Furthermore, the sealing rubber ring is made of composite material and bonded to the upper cover plate of the lower floating unit, fitting into the groove at the bottom of the upper floating unit box to achieve a seal between the upper and lower boxes; the connecting sleeve is bonded to the bottom round hole of the upper floating unit box through composite material, and the bottom of the floating unit connecting column is welded to the bottom plate of the lower floating unit box, and the connection between the upper and lower floating units is completed sequentially through the round hole at the bottom of the lower floating unit upper cover plate, the round hole at the bottom of the upper floating unit box, the connecting sleeve, and the round hole at the upper floating unit upper cover plate; the end of the floating unit connecting column is provided with threads, which are locked to the upper cover plate of the upper floating unit by a lock nut; the side of the upper floating unit box is provided with bolt holes, and two adjacent upper floating units are connected to the T-beam by connecting bolts and locked by connecting nuts.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This invention divides the traditional fully liquid-contact internal floating roof into two layers, so that the part of the floating box unit that directly contacts the oil and the part that does not contact the oil can be sealed separately, ensuring that if the part that directly contacts the oil is damaged and oil enters, it will not affect the upper layer.

[0015] 2. This invention innovatively divides the float box unit into two parts and uses a special structure to seal the contact points between the two parts, which can ensure that oil does not seep into the connection points between the two parts of the float box unit and allows for quick replacement of damaged units.

[0016] 3. This invention separates and seals the part that accounts for about 40% of the float box unit and is in direct contact with the oil from the upper part. When damage occurs, the part in contact with the oil can be replaced directly without replacing the undamaged upper part, which can greatly reduce the cost of subsequent maintenance and replacement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the connection between the upper floating unit and the lower floating unit in this invention;

[0018] Figure 2 This is an installation diagram of the upper floating unit, the lower floating unit, the floating unit connecting column, the connecting sleeve, and the sealing rubber ring in this invention;

[0019] Figure 3 This is a structural diagram of the upper and lower floating units;

[0020] Figure 4 This is a schematic diagram of the connection between two adjacent upper-level floating units.

[0021] Explanation of the labels in the diagram:

[0022] 1. Upper floating unit; 11. Upper floating unit housing; 12. Upper floating unit top cover; 13. Upper floating unit internal honeycomb assembly; 2. Lower floating unit; 21. Lower floating unit housing; 22. Lower floating unit top cover; 23. Lower floating unit internal honeycomb assembly; 3. Floating unit connecting column; 4. Connecting sleeve; 5. Sealing rubber ring; 6. Locking nut; 7. Connecting bolt; 8. Connecting nut. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings.

[0024] Reference Figures 1 to 4A double-layer sealed portable replaceable fully liquid-contact floating roof includes an upper floating unit 1, a lower floating unit 2, a floating unit connecting column 3, a connecting sleeve 4, and a sealing rubber ring 5. The upper floating unit 1 consists of an upper floating unit housing 11, an upper floating unit cover plate 12, and an internal honeycomb assembly 13. The upper floating unit housing 11 has a groove at its bottom, with four identical circular holes on the groove surface. The upper floating unit cover plate 12 also has four circular holes, the size and position of which correspond to the circular holes in the groove at the bottom of the upper floating unit housing 11. The internal honeycomb assembly 13 is bonded to the upper floating unit housing 11 and the upper floating unit cover plate 12 using a composite material. The lower floating unit 2 consists of a lower floating unit housing 21, a lower floating unit cover plate 22, and an internal honeycomb assembly 23. The lower floating unit's top cover plate 22 has four round holes, the size and position of which are consistent with the round holes in the bottom groove of the upper floating unit's housing 11. The honeycomb assembly 23 inside the lower floating unit is bonded to the lower floating unit's housing 21 and the lower floating unit's top cover plate 22 using composite material. The sealing rubber ring 5 is bonded to the lower floating unit's top cover plate 22 using composite material, fitting into the bottom groove of the upper floating unit's housing 11 to achieve a seal between the upper and lower housings. The connecting sleeve 4 is bonded to the bottom round hole of the upper floating unit's housing 11 using composite material. The bottom of the floating unit connecting column 3 is welded to the bottom plate of the lower floating unit's housing 21, and the connection between the upper floating unit 1 and the lower floating unit 2 is completed by sequentially passing through the bottom round hole of the lower floating unit's top cover plate 22, the bottom round hole of the upper floating unit's housing 11, the connecting sleeve 4, and the round hole at the upper floating unit's top cover plate 12. The end of the floating unit connecting column 3 is threaded, and it is locked to the upper cover plate 12 of the upper floating unit by locking nut 6.

[0025] Reference Figure 4 Bolt holes are provided on the side of the upper floating unit box 11. Two adjacent upper floating units 1 are connected to the T-beam 9 by connecting bolts 7 and locked by connecting nuts 8.

Claims

1. A double-sealed, portable, replaceable, fully liquid-contact floating roof, characterized in that: It includes an upper floating unit (1), a lower floating unit (2), a floating unit connecting column (3), a connecting sleeve (4), and a sealing rubber ring (5); the upper floating unit (1) includes an upper floating unit box (11), an upper floating unit cover plate (12), and an upper floating unit internal honeycomb assembly (13). The bottom of the upper floating unit box (11) has a groove, and four round holes of the same size are opened on the surface of the groove; the upper floating unit cover plate (12) also has four round holes, the size and position of which are the same as the round holes of the groove at the bottom of the upper floating unit box (11); the honeycomb assembly (13) inside the upper floating unit is bonded to the upper floating unit box (11) and the upper floating unit cover plate (12) by a composite material; the lower floating unit (2) includes a lower floating unit box (21), a lower floating unit cover plate (22) and a honeycomb assembly (23) inside the lower floating unit; the upper floating unit cover plate (22) has four round holes, the size and position of which are the same as the round holes of the groove at the bottom of the upper floating unit box (11); the honeycomb assembly (23) inside the lower floating unit is bonded to the lower floating unit box (21) and the lower floating unit cover plate (22) by a composite material; The sealing rubber ring (5) is bonded to the upper cover plate (22) of the lower floating unit using composite material, and is fitted into the bottom groove of the upper floating unit box (11) to achieve a seal between the upper and lower boxes; the connecting sleeve (4) is bonded to the bottom round hole of the upper floating unit box (11) using composite material, and the bottom of the floating unit connecting column (3) is welded to the bottom plate of the lower floating unit box (21), and passes through the bottom round hole of the lower floating unit upper cover plate (22) and the upper floating unit box (11) in sequence. The bottom round hole, the connecting sleeve (4) and the round hole at the upper floating unit cover plate (12) complete the connection between the upper floating unit (1) and the lower floating unit (2); the end of the floating unit connecting column (3) is provided with a thread, which is locked to the upper floating unit cover plate (12) by a locking nut (6); the side of the upper floating unit box (11) is provided with bolt holes, and two adjacent upper floating units (1) are connected to the T-beam (9) by connecting bolts (7) and locked by connecting nuts (8).

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