Floating disc edge sealing device of floating roof oil tank

Abstract

The utility model relates to the technical field of floating discs, in particular to a floating disc edge sealing device of a floating roof oil tank, which comprises an end ring connected to the periphery of a floating disc and a sealing component arranged on the periphery of the end ring, the end ring comprises at least one group of arc-shaped steel rings, and the arc-shaped steel rings are welded and connected at equal intervals along the periphery of the floating disc. Through a mechanism composed of the end ring and the sealing assembly, a set of edge sealing device with the adjustable sealing diameter is provided for the floating disc for the floating-roof oil tank, a gap between the oil tank and the floating disc can be better adapted, and the sealing effect of the edge of the floating disc is improved; the floating ring provides certain buoyancy for the bottom of the sealing assembly, and the buoyancy can generate certain pushing force on the bottom of the arc-shaped spring steel sheet to force the bending amplitude of the arc-shaped spring steel sheet to be increased, so that a gap between the fireproof surface layer of the sealing assembly and the inner wall of the oil tank is reduced, and a good sealing effect is achieved.

Description

A floating roof oil tank edge sealing device Technical Field

[0001] This utility model relates to the field of floating roof technology, specifically to a floating roof edge sealing device for a floating roof oil tank. Background Technology

[0002] Currently, to minimize evaporation losses, floating roof tanks generally employ fully liquid-contact floating roofs for sealing the liquid inside the tank. This full-contact design reduces evaporation losses and improves environmental safety performance, making them widely used in petroleum, chemical, and environmental protection fields.

[0003] Existing edge sealing devices for fully liquid-contact floating roofs are mostly fixed structures, which cannot dynamically adapt to the gap differences between the oil tank and the floating roof caused by manufacturing errors, liquid level changes, or oil tank deformation. This leads to problems such as poor sealing and large oil and gas evaporation losses. Therefore, a floating roof edge sealing device for floating roof oil tanks is proposed. Summary of the Invention

[0004] To address the problems in the prior art, this utility model provides a floating roof edge sealing device for a floating roof oil tank.

[0005] The technical solution adopted by this utility model to solve its technical problem is a floating roof edge sealing device for a floating roof oil tank, including an end ring connected to the outer periphery of the floating roof and a sealing component disposed on the outer periphery of the end ring.

[0006] The end ring includes an arc-shaped steel ring, and at least one set of the arc-shaped steel ring is provided, and the arc-shaped steel rings are welded together at equal intervals along the outer periphery of the floating plate.

[0007] By adopting the above technical solution, a mechanism consisting of an end ring and a sealing component is used to provide an edge sealing device with an adjustable sealing diameter for the floating roof of a floating roof tank. This device can better adapt to the gap between the tank and the floating roof and improve the sealing effect of the floating roof edge.

[0008] Specifically, the arc-shaped steel ring has a counterweight cavity inside, and the top of the arc-shaped steel ring has an operating port that communicates with the counterweight cavity. A flange cover is installed on the operating port.

[0009] Specifically, the outer periphery of the arc-shaped steel ring is provided with an arc-shaped side lug for installation and connection of the sealing assembly, and the top of the arc-shaped side lug is provided with an arc-shaped pressure plate;

[0010] The sealing assembly includes a fireproof surface layer, an arc-shaped spring steel sheet, and a floating ring. The floating ring is located at the bottom of the arc-shaped spring steel sheet and is bonded to the bottom inner side of the fireproof surface layer. The arc-shaped spring steel sheet is bonded to the top inner side of the fireproof surface layer. The top of the fireproof surface layer and the arc-shaped spring steel sheet are located between the arc-shaped side lug and the arc-shaped pressure plate, and are fixed to the arc-shaped side lug and the arc-shaped pressure plate by bolts.

[0011] Specifically, the bottom of the arc-shaped spring steel sheet is S-shaped, and the bottom of the arc-shaped spring steel sheet is bonded to the top of the floating ring.

[0012] By adopting the above technical solution, the floating ring provides a certain buoyancy to the bottom of the sealing assembly while the floating plate is floating on the oil surface. This buoyancy will also exert a certain pushing force on the bottom of the arc-shaped spring steel sheet, forcing the bending amplitude of the arc-shaped spring steel sheet to increase. This reduces the gap between the fireproof surface layer of the sealing assembly and the inner wall of the oil tank, thus achieving a better sealing effect.

[0013] Specifically, the fireproof surface layer is made of fiberglass cloth with a silicone coating, and the floating ring is made of nitrile rubber.

[0014] The beneficial effects of this utility model are as follows: The mechanism composed of an end ring and a sealing assembly provides an adjustable-diameter edge sealing device for the floating roof of a floating roof tank. This better adapts to the gap between the tank and the floating roof, improving the sealing effect of the floating roof edge. Through the floating ring, while the floating roof is floating on the oil surface, the floating ring provides buoyancy to the bottom of the sealing assembly. This buoyancy exerts a certain pushing force on the bottom of the arc-shaped spring steel sheet, forcing the arc-shaped spring steel sheet to bend more, thereby reducing the gap between the fireproof surface layer of the sealing assembly and the inner wall of the tank, achieving a better sealing effect. The sealing assembly provides a seal between the outer periphery of the floating roof and the inner wall of the tank. The end ring provides counterweight to enhance the sealing effect of the sealing assembly on the outer periphery of the floating roof, better adapting to the sealing requirements of various gaps. This solves the problem that existing fully liquid-contact floating roof edge sealing devices are mostly fixed structures, unable to dynamically adapt to the gap differences between the tank and the floating roof caused by manufacturing errors, liquid level changes, or tank deformation, resulting in poor sealing and large oil and gas evaporation losses. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 is a schematic diagram of the overall invention.

[0017] Figure 2 is a cross-sectional view of the end ring and sealing assembly of this utility model;

[0018] In the diagram: Floating plate 1, end ring 2, arc-shaped steel ring 21, counterweight cavity 22, operating port 23, arc-shaped side lug 24, arc-shaped pressure plate 25, sealing assembly 3, fireproof surface layer 31, arc-shaped spring steel sheet 32, floating ring 33. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] As shown in Figures 1-2, the floating roof edge sealing device of the floating roof oil tank of this utility model includes an end ring 2 connected to the outer periphery of the floating roof 1, and a sealing component 3 disposed on the outer periphery of the end ring 2.

[0021] The end ring 2 includes an arc-shaped steel ring 21, and at least one set of the arc-shaped steel ring 21 is provided, and the arc-shaped steel ring 21 is welded and connected at equal intervals along the outer periphery of the floating plate 1.

[0022] The present invention also includes a counterweight cavity 22 inside the arc-shaped steel ring 21, an operating port 23 communicating with the counterweight cavity 22 at the top of the arc-shaped steel ring 21, and a flange cover installed on the operating port 23.

[0023] The present invention also includes an arc-shaped side ear 24 provided on the outer periphery of the arc-shaped steel ring 21 for installation and connection of the sealing assembly 3, and an arc-shaped pressure plate 25 provided on the top of the arc-shaped side ear 24;

[0024] The sealing assembly 3 includes a fireproof surface layer 31, an arc-shaped spring steel sheet 32, and a floating ring 33. The floating ring 33 is disposed at the bottom of the arc-shaped spring steel sheet 32 ​​and is bonded to the bottom inner side of the fireproof surface layer 31. The arc-shaped spring steel sheet 32 ​​is bonded to the top inner side of the fireproof surface layer 31. The top of the fireproof surface layer 31 and the arc-shaped spring steel sheet 32 ​​is disposed between the arc-shaped side lug 24 and the arc-shaped pressure plate 25, and is installed and fixed to the arc-shaped side lug 24 and the arc-shaped pressure plate 25 by bolts.

[0025] The present invention also includes that the bottom of the arc-shaped spring steel sheet 32 ​​is S-shaped, and the bottom of the arc-shaped spring steel sheet 32 ​​is bonded to the top of the floating ring 33.

[0026] During use, by utilizing the floating ring 33, while the floating plate is floating on the oil surface, the floating ring 33 provides a certain buoyancy to the bottom of the sealing assembly 3, and this buoyancy will generate a certain pushing force on the bottom of the arc-shaped spring steel sheet 32, forcing the bending amplitude of the arc-shaped spring steel sheet 32 ​​to increase, thereby reducing the gap between the fireproof surface layer 31 of the sealing assembly 3 and the inner wall of the oil tank, achieving a better sealing effect.

[0027] When it is necessary to further increase the sealing performance between the sealing assembly 3 and the inner wall of the oil tank, counterweights, water, sand, etc. can be added to the counterweight cavity 22 in the arc-shaped steel ring 21 to further increase the downward pressure of the float, forcing the float ring 33 to increase the upward thrust on the arc-shaped spring steel sheet 32, thereby increasing the curvature of the arc-shaped spring steel sheet 32, and thus further improving the sealing performance between the fireproof surface layer 31 of the sealing assembly 3 and the inner wall of the oil tank.

[0028] This utility model also includes that the fireproof surface layer 31 is made of fiberglass cloth material with a silicone coating on the surface, and the floating ring 33 is made of nitrile rubber material.

[0029] In use, this invention provides a seal between the outer periphery of the floating disk 1 and the inner wall of the oil tank using the sealing component 3. The end ring 2 provides counterweight to enhance the sealing effect of the sealing component 3 on the outer periphery of the floating disk 1, better adapting to sealing requirements of various gaps. Utilizing the floating ring 33, while the floating disk is afloat, the floating ring 33 provides buoyancy to the bottom of the sealing component 3. This buoyancy exerts a pushing force on the bottom of the arc-shaped spring steel sheet 32, forcing the arc-shaped spring steel sheet 32 ​​to bend more. This reduces the gap between the fireproof surface layer 31 of the sealing component 3 and the inner wall of the oil tank, achieving a better sealing effect. When it is necessary to further increase the sealing performance between the sealing component 3 and the inner wall of the oil tank, counterweights, water, sand, etc. can be added to the counterweight cavity 22 in the arc-shaped steel ring 21 to further increase the downward pressure of the float, forcing the float ring 33 to increase the upward thrust on the arc-shaped spring steel sheet 32, increasing the curvature of the arc-shaped spring steel sheet 32, thereby further improving the sealing performance between the fireproof surface layer 31 of the sealing component 3 and the inner wall of the oil tank.

[0030] In the later stages, the sealing structure and floating roof need to be inspected and cleaned regularly, the corroded parts need to be cleaned, the integrity of the coating needs to be checked, and defects such as coating peeling and cracks need to be repaired in time. Small areas of corrosion can be repaired by welding, and severely damaged parts need to be replaced and the coating recoated.

[0031] Furthermore, the surface of the arc-shaped steel ring 21 can be treated with pickling passivation, electrolytic polishing, or water-based inorganic zinc-rich coating for corrosion protection.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A floating roof oil tank edge sealing device, characterized in that, It includes an end ring (2) connected to the outer periphery of the floating disk (1) and a sealing assembly (3) disposed on the outer periphery of the end ring (2); the end ring (2) includes an arc-shaped steel ring (21), at least one set of the arc-shaped steel ring (21) is provided, and the arc-shaped steel ring (21) is welded and connected at equal intervals along the outer periphery of the floating disk (1).

2. The floating roof edge sealing device for a floating roof oil tank according to claim 1, characterized in that, The arc-shaped steel ring (21) has a counterweight cavity (22) inside, and the top of the arc-shaped steel ring (21) has an operating port (23) that communicates with the counterweight cavity (22). A flange cover is installed on the operating port (23).

3. The floating roof edge sealing device for a floating roof oil tank according to claim 2, characterized in that, The outer periphery of the arc-shaped steel ring (21) is provided with an arc-shaped side ear (24) for installation and connection of the sealing assembly (3), and an arc-shaped pressure plate (25) is provided on the top of the arc-shaped side ear (24); the sealing assembly (3) includes a fireproof surface layer (31), an arc-shaped spring steel sheet (32) and a floating ring (33), the floating ring (33) is located at the bottom of the arc-shaped spring steel sheet (32) and is bonded to the bottom of the inner side of the fireproof surface layer (31), the arc-shaped spring steel sheet (32) is bonded to the top of the inner side of the fireproof surface layer (31), the top of the fireproof surface layer (31) and the arc-shaped spring steel sheet (32) is located between the arc-shaped side ear (24) and the arc-shaped pressure plate (25), and is installed and fixed to the arc-shaped side ear (24) and the arc-shaped pressure plate (25) by bolts.

4. The floating roof edge sealing device for a floating roof oil tank according to claim 3, characterized in that, The bottom of the arc-shaped spring steel sheet (32) is S-shaped, and the bottom of the arc-shaped spring steel sheet (32) is bonded to the top of the floating ring (33).

5. The floating roof edge sealing device for a floating roof oil tank according to claim 4, characterized in that, The fireproof surface layer (31) is made of fiberglass cloth with a silicone coating on the surface, and the floating ring (33) is made of nitrile rubber.

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