An inner floating disc edge structure with multiple seals

Abstract

This utility model relates to the field of internal floating roof technology, specifically an internal floating roof edge structure with multiple seals, including a floating roof edge, a main seal, a secondary seal, and a tank wall. The main seal is located on the outer side of the floating roof edge, and the secondary seal is located at the bottom of the main seal on the outer side of the floating roof edge. A baffle plate is welded to the bottom of the floating roof edge, and the end of the baffle plate is located at the bottom of the secondary seal. An elastic support assembly is provided between the main seal and the secondary seal. By adding a multiple sealing structure and utilizing a three-level sealing protection system, the sealing efficiency of the internal floating roof edge can be greatly improved, thereby improving the performance.

Description

Technical Field

[0001] This utility model relates to the field of internal floating disk technology, specifically to an edge structure of an internal floating disk with multiple seals. Background Technology

[0002] An internal floating roof is a floating top cover that floats on the surface of the oil tank and rises and falls with the oil. It is an energy-saving and environmentally friendly device that covers the surface of the stored liquid inside the internal floating roof tank and moves up and down with the liquid surface. It can effectively reduce the evaporation of the stored liquid and significantly reduce the oil and gas above the liquid surface, thereby achieving the purpose of protecting the environment and reducing the risk of fire.

[0003] Currently, the use of internal floating roofs lacks a multi-layered sealing structure. Traditional internal floating roof edge sealing structures mostly employ a single sealing method, such as a simple rubber sealing strip. During long-term use, the sealing strip is prone to aging, deformation, and damage due to factors such as oil evaporation, temperature changes, and tank shaking, leading to a decline in sealing effectiveness and increased oil evaporation. This not only wastes energy but also poses significant safety hazards. Furthermore, a single sealing structure has poor adaptability to different operating conditions and cannot meet increasingly stringent environmental and safety requirements. Therefore, an internal floating roof edge structure with multiple seals is proposed to increase the number of sealing elements. By utilizing a three-level sealing protection system, the sealing efficiency of the internal floating roof edge can be greatly improved, thereby enhancing the performance. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides an inner floating disk edge structure with multiple seals, so as to improve the sealing efficiency of the inner floating disk edge by utilizing a three-level sealing protection system, thereby improving the performance.

[0005] The technical solution adopted by this utility model to solve its technical problem is an inner floating disk edge structure with multiple seals, including a floating disk edge, a main seal, a secondary seal, and a tank wall. The main seal is provided on the outer side of the floating disk edge, and the secondary seal is provided on the outer side of the floating disk edge at the bottom of the main seal. A liquid baffle is welded to the bottom of the floating disk edge, and the end of the liquid baffle is located at the bottom of the secondary seal. An elastic support assembly is provided between the main seal and the secondary seal.

[0006] By adopting the above technical solution, multiple sealing structures are added, and triple sealing protection is used to replace the traditional single-layer tongue-shaped sealing strip structure.

[0007] Specifically, the elastic support assembly includes a spring bracket, a guide post is sleeved on the top of the spring bracket and the end of the guide post is located at the bottom of the main seal, a limiting sleeve is sleeved on the bottom of the spring bracket and the end of the limiting sleeve is located at the top of the secondary seal, and a disc spring is provided inside the spring bracket between the guide post and the limiting sleeve.

[0008] Specifically, the main sealing element includes a fixed pressure plate, and the fixed pressure plate is connected to the edge of the floating plate by bolts. A first sealing surface is formed between the outer wall of the main sealing element and the tank wall. The main sealing element is a polytetrafluoroethylene-coated foam rubber strip.

[0009] Specifically, the secondary seal includes a flexible connecting strip, which is hinged to the edge of the floating roof. The outer side of the secondary seal forms a second sealing surface with the tank wall. The secondary seal is made of silicone rubber.

[0010] Specifically, an isolation plate is provided between the main seal and the secondary seal, and the spring bracket is fixedly connected to the isolation plate by bolts. The surface of the isolation plate is provided with a vent hole, and the limiting sleeve passes through the vent hole. An electric heat tracing groove is provided on the top of the isolation plate, and a heating cable is provided in the electric heat tracing groove.

[0011] Specifically, the baffle plate forms an angle of 30°-45° with the horizontal plane, and the gap between its end and the tank wall is ≤5mm.

[0012] The beneficial effects of this utility model are:

[0013] (1) The inner floating disk edge structure with multiple seals described in this utility model can increase the multiple sealing structure by setting the main sealing element, the secondary sealing element and the liquid baffle. It can replace the traditional single-layer tongue-shaped sealing strip structure with triple sealing protection, thereby improving the sealing efficiency of the floating disk edge and making it more stable and reliable in use.

[0014] (2) The inner floating disk edge structure with multiple seals described in this utility model can increase the dynamic compensation structure by setting spring brackets, guide columns, limiting sleeves and disc springs, realize the pressure linkage of the main and auxiliary seals, and avoid the force interference problem of traditional multi-layer seals. Attached Figure Description

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

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the elastic support component of this utility model;

[0018] Figure 3 This is a cross-sectional view of the secondary sealing component of this utility model;

[0019] Figure 4 This is a cross-sectional view of the main sealing component of this utility model;

[0020] Figure 5This is a cross-sectional view of the isolation plate of this utility model;

[0021] In the diagram: 1. Floating roof edge; 2. Main seal; 201. Fixed pressure plate; 3. Secondary seal; 301. Flexible connecting strip; 4. Liquid baffle; 5. Elastic support assembly; 501. Spring bracket; 502. Guide column; 503. Limiting sleeve; 504. Disc spring; 6. Isolation plate; 601. Vent hole; 602. Electric heat tracing tank; 603. Heating cable; 7. Tank wall; 8. First sealing surface; 9. Second sealing surface. Detailed Implementation

[0022] 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.

[0023] To facilitate the use of a three-stage sealing protection system and improve the sealing efficiency of the inner floating roof edge, thereby enhancing its performance, such as... Figure 1-3 As shown, the present invention discloses an inner floating disk edge structure with multiple seals, including a floating disk edge 1, a main seal 2, a secondary seal 3, and a tank wall 7. The main seal 2 is provided on the outer side of the floating disk edge 1, and the secondary seal 3 is provided on the outer side of the floating disk edge 1 at the bottom of the main seal 2. A baffle plate 4 is welded to the bottom of the floating disk edge 1, and the end of the baffle plate 4 is located at the bottom of the secondary seal 3. An elastic support assembly 5 is provided between the main seal 2 and the secondary seal 3.

[0024] In use, the main seal 2, the secondary seal 3 and the baffle 4 are used to add a multi-layer sealing structure, which replaces the traditional single-layer tongue-shaped sealing strip structure and improves the sealing efficiency of the floating plate edge.

[0025] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes the following: the elastic support assembly 5 includes a spring bracket 501, the top of the spring bracket 501 is fitted with a guide post 502, and the end of the guide post 502 is located at the bottom of the main sealing member 2; the bottom of the spring bracket 501 is fitted with a limiting sleeve 503, and the end of the limiting sleeve 503 is located at the top of the secondary sealing member 3; a disc spring 504 is provided inside the spring bracket 501 between the guide post 502 and the limiting sleeve 503.

[0026] In use, the pressure linkage of the main and auxiliary seals can be achieved through the spring bracket 501, guide post 502, limit sleeve 503 and disc spring 504, avoiding the force interference problem of traditional multi-layer seals.

[0027] For example, such as Figure 4As shown, the present invention also includes the main sealing component 2, which includes a fixed pressure plate 201, and the fixed pressure plate 201 is connected to the edge 1 of the floating plate by bolts. A first sealing surface 8 is formed between the outer wall of the main sealing component 2 and the tank wall 7. The main sealing component 2 is a polytetrafluoroethylene-coated foam rubber strip.

[0028] When in use, the main sealing element 2 is easily fixed and installed by fixing the pressure plate 201.

[0029] For example, such as Figure 1 , 3 As shown, the present invention also includes a secondary sealing element 3 comprising a flexible connecting strip 301, and the flexible connecting strip 301 is hinged to the edge 1 of the floating plate. The outer side of the secondary sealing element 3 forms a second sealing surface 9 with the tank wall 7. The secondary sealing element 3 is made of silicone rubber.

[0030] During use, the flexible connecting strip 301 enables the secondary seal 3 to have an automatic reset function. The flexible connecting strip 301 is a 45°-60° inclined hinge. The flexible connecting strip 301 adopts a three-layer composite structure: a fluororubber matrix with embedded polyester fiber reinforcement mesh, and the surface is impregnated with PTFE. During installation, it is necessary to ensure that the fiber weaving direction is perpendicular to the hinge axis to maximize tensile strength and reduce torsional stress.

[0031] For example, such as Figure 5 As shown, this utility model also includes an isolation plate 6 between the main sealing member 2 and the secondary sealing member 3, and the spring bracket 501 is fixedly connected to the isolation plate 6 by bolts. The surface of the isolation plate 6 is provided with a vent hole 601, and the limiting sleeve 503 passes through the vent hole 601. The top of the isolation plate 6 is provided with an electric heat tracing groove 602, and a heating cable 603 is provided in the electric heat tracing groove 602.

[0032] During use, the air pressure in the sealing cavity can be balanced by the isolation plate 6 and the vent 601 to prevent negative pressure liquid accumulation. The electric heat tracing tank 602 and the heating cable 603 can solve the problem of sealing failure caused by freezing in northern winters by heating. The isolation plate 6 is connected to the edge of the floating plate 1 by welding, and the vent 601 has an inverted conical structure.

[0033] For example, such as Figure 1 As shown, the present invention also includes a baffle plate 4 forming an angle of 30°-45° with the horizontal plane, and the gap between its end and the tank wall 7 is ≤5mm.

[0034] When in use, the baffle plate 4 can block the medium from contacting the seal, thereby slowing down the corrosion failure caused by the liquid medium seeping into the seal strip.

[0035] In use, the operator first welds the baffle plate 4 to the bottom of the floating plate edge 1, and then installs the spring bracket 501 with bolts. The main seal 2 is embedded in the slot of the fixed pressure plate 201 and locked. The secondary seal 3 is hinged to the floating plate edge 1 through the flexible connecting strip 301. With the main seal 2, secondary seal 3 and baffle plate 4, the secondary seal 3 can be automatically activated when the main seal 2 fails. The baffle plate 4 provides physical barrier, and the flexible connecting strip 301 allows the secondary seal 3 to adaptively shift in three dimensions, thus forming triple protection and improving the sealing efficiency of the floating plate edge 1. Moreover, when the floating plate tilts and the gap between the main seal 2 and the tank wall 7 increases, the secondary seal 3 can fill the gap under the push of the butterfly spring 504. At the same time, the baffle plate 4 blocks the medium from contacting the seal, thereby slowing down the corrosion failure caused by the liquid medium seeping into the sealing strip.

[0036] By adding an electric heat tracing tank 602 and a heating cable 603 to the top of the isolation plate 6, the condensate can be prevented from freezing and blocking the vent hole 601 by heating, maintaining the gas flow in the sealed cavity and avoiding low-temperature brittle fracture, thereby solving the problem of sealing failure caused by freezing in northern winters.

[0037] 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. An inner floating disk edge structure with multiple seals, characterized in that, The container includes a floating roof edge (1), a main seal (2), a secondary seal (3), and a tank wall (7). The main seal (2) is provided on the outer side of the floating roof edge (1), and the secondary seal (3) is provided on the outer side of the floating roof edge (1) at the bottom of the main seal (2). A baffle plate (4) is welded to the bottom of the floating roof edge (1), and the end of the baffle plate (4) is located at the bottom of the secondary seal (3). An elastic support assembly (5) is provided between the main seal (2) and the secondary seal (3).

2. The inner floating disk edge structure with multiple seals according to claim 1, characterized in that, The elastic support assembly (5) includes a spring bracket (501), a guide post (502) is sleeved on the top of the spring bracket (501), and the end of the guide post (502) is located at the bottom of the main seal (2). A limiting sleeve (503) is sleeved on the bottom of the spring bracket (501), and the end of the limiting sleeve (503) is located at the top of the secondary seal (3). A disc spring (504) is provided inside the spring bracket (501) between the guide post (502) and the limiting sleeve (503).

3. The inner floating disk edge structure with multiple seals according to claim 1, characterized in that, The main sealing element (2) includes a fixed pressure plate (201), and the fixed pressure plate (201) is connected to the edge of the floating plate (1) by bolts. A first sealing surface (8) is formed between the outer wall of the main sealing element (2) and the tank wall (7). The main sealing element (2) is a polytetrafluoroethylene-coated foam rubber strip.

4. The inner floating disk edge structure with multiple seals according to claim 1, characterized in that, The secondary seal (3) includes a flexible connecting strip (301), and the flexible connecting strip (301) is connected to the edge of the floating disk (1) by a hinge. The outer side of the secondary seal (3) forms a second sealing surface (9) with the tank wall (7). The secondary seal (3) is made of silicone rubber.

5. The inner floating disk edge structure with multiple seals according to claim 2, characterized in that, An isolation plate (6) is provided between the main sealing element (2) and the secondary sealing element (3), and the spring bracket (501) is fixedly connected to the isolation plate (6) by bolts. A vent hole (601) is provided on the surface of the isolation plate (6), and a limiting sleeve (503) passes through the vent hole (601). An electric heat tracing groove (602) is provided on the top of the isolation plate (6), and a heating cable (603) is provided in the electric heat tracing groove (602).

6. The inner floating disk edge structure with multiple seals according to claim 1, characterized in that, The baffle plate (4) forms an angle of 30°-45° with the horizontal plane, and the gap between its end and the tank wall (7) is ≤5mm.

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