An assembled full-liquid double-disc stainless steel floating disc
By using the compensation mechanism of the assembled fully liquid-contact double-disc stainless steel floating roof, the amount of gas in the airbag and the contact force of the rubber ring are dynamically adjusted, which solves the problem of poor sealing or jamming of the existing floating roof and achieves sealing and safety when the tank is deformed.
Patent Information
- Application Number
- CN202521466135.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-14
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-14
AI Technical Summary
The existing double-disc stainless steel floating roof has a fixed size and lacks sealing compensation capability, which leads to poor sealing or jamming when the tank is deformed or not round enough, making it easy to be damaged.
The system adopts a prefabricated, fully liquid-contact, double-disc stainless steel floating roof. Through a compensation mechanism including a compensation box, airbag, and buffer cylinder, it dynamically adjusts the gas volume in the airbag and the contact force of the rubber ring. This, combined with the buffer plate absorbing changes in the liquid level, achieves dynamic sealing and buffering.
This effectively avoids damage from incomplete sealing or jamming, ensuring the sealing and safety of the tank when it deforms, and reducing damage from the swaying of the floating roof.
Smart Images

Figure CN224676899U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stainless steel floating roof technology, and in particular to an assembled, fully liquid-contact, double-disc stainless steel floating roof. Background Technology
[0002] In large liquid storage tanks, to prevent liquid loss due to evaporation, a floating roof is installed inside the tank. This floating roof covers the liquid surface inside the tank and rises and falls with the liquid level. Using this internally floating roof to cover the liquid surface is currently recognized as the most ideal method to reduce oil evaporation loss, as it has the advantages of simple structure, convenient construction, and the most economical operating cost.
[0003] The existing double-disc stainless steel floating roofs have relatively fixed dimensions and lack sealing compensation capabilities. When the tank body is deformed or not round enough, the floating roof may not seal properly when sliding up and down inside the tank body due to insufficient fit with the tank body, or it may become stuck and cause the floating roof to overturn and tear. Utility Model Content
[0004] The purpose of this utility model is to solve the following shortcomings in the prior art: the existing double-disc stainless steel floating roof has a relatively fixed size and lacks sealing compensation capability. When the tank body is deformed or the roundness is not high, the floating roof will not be able to seal properly when it slides up and down in the tank body due to insufficient fit with the tank body, or it may be stuck and cause the floating roof to overturn and tear. Therefore, this utility model proposes a prefabricated fully liquid-contact double-disc stainless steel floating roof.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A prefabricated, fully liquid-contact, double-disc stainless steel floating roof includes a floating roof body, which is slidably connected to a tank body. The floating roof body is equipped with a compensation mechanism, which includes a compensation box, a U-shaped plate, an airbag, a fixing plate, and an adjusting cylinder. Multiple compensation boxes are arranged in a circular array on the side wall of the floating roof body. Each compensation box has an opening on its side wall. The U-shaped plate is fixedly connected to the opening. The airbag is fixedly connected to the side wall of the U-shaped plate. The fixing plate is fixedly connected to the inner side wall of the compensation box. The adjusting cylinder is fixedly connected to the side wall of the fixing plate. A buffer cylinder is fixedly connected to the inner side wall of the compensation box. A buffer plate is slidably connected to the inner side wall of the buffer cylinder. A compensation rod is fixedly connected to the side wall of the buffer plate and slidably connected to the side wall of the buffer cylinder. A compensation ball is fixedly connected to the end of the compensation rod away from the buffer plate, and the compensation ball is slidably connected to the tank body.
[0006] Preferably, an adjusting plate is slidably connected to the inner side wall of the adjusting cylinder, and an adjusting rod is fixedly connected to the side wall of the adjusting plate, the adjusting rod being slidably connected to one side wall of the adjusting cylinder.
[0007] Preferably, an air inlet pipe and an air outlet pipe are fixedly connected between the regulating cylinder and the airbag, and a one-way valve is provided in both the air inlet pipe and the air outlet pipe.
[0008] Preferably, a Z-shaped plate is fixedly connected to the end of the adjusting rod away from the adjusting plate, the Z-shaped plate is fixedly connected to the compensating rod, and an adjusting spring is fixedly connected between the Z-shaped plate and the buffer cylinder.
[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. Through the cooperation of structures such as compensation ball, airbag, and adjusting cylinder, dynamic sealing is achieved by using variable airbag and sealing components such as rubber ring. The compensation ball dynamically adjusts the amount of gas in the airbag according to the degree of deformation of the tank, so that the contact force is kept at an appropriate level, avoiding insufficient contact force leading to decreased sealing performance and leakage, or excessive contact force causing jamming or damage.
[0010] 2. Through the cooperation of structures such as buffer cylinder and buffer plate, when the liquid level changes rapidly, the buffer plate moves inside the buffer cylinder, and the hydraulic oil quickly passes through the oil leakage hole of the buffer plate to absorb the shaking force and slow down the shaking, so as to avoid large-scale shaking damage to the floating roof body. The compensation ball on the other side will also protrude outward due to the reduction of the squeezing pressure, causing the air bag on the other side to drive the rubber ring to expand, preventing leakage and ensuring safety performance. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the tank structure of a prefabricated, fully liquid-contact, double-disc stainless steel floating roof proposed in this utility model. Figure 2 This is a schematic diagram of the airbag structure of a prefabricated, fully liquid-contact, double-disc stainless steel floating roof proposed in this utility model. Figure 3 This is a schematic diagram of the U-shaped plate structure of a prefabricated, fully liquid-contact, double-disc stainless steel floating roof proposed in this utility model. Figure 4 for Figure 3 A magnified view of part A in the image.
[0012] In the diagram: 1. Floating disc body, 2. Tank body, 3. Compensation box, 4. U-shaped plate, 5. Airbag, 6. Fixing plate, 7. Adjusting cylinder, 8. Buffer cylinder, 9. Buffer plate, 10. Compensation rod, 11. Compensation ball, 12. Adjusting plate, 13. Adjusting rod, 14. Air inlet pipe, 15. Air outlet pipe, 16. Z-shaped plate, 17. Adjusting spring. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0014] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.
[0015] Reference Figures 1-4 A prefabricated, fully liquid-contact, double-disc stainless steel floating roof includes a floating roof body 1, which is slidably connected to a tank body 2. The floating roof body 1 is equipped with a compensation mechanism, which includes a compensation box 3, a U-shaped plate 4, an air bladder 5, a fixing plate 6, and an adjusting cylinder 7. Multiple compensation boxes 3 are arranged in a circular array on the side wall of the floating roof body 1. An opening is provided on the side wall of each compensation box 3. The air bladder 5 is fixedly connected to the side wall of the U-shaped plate 4, which is also fixedly connected to the opening. The U-shaped plate 4 limits the air bladder 5, allowing it to expand only to the sides and outwards. The outer surface of the air bladder 5 is sealed with rubber rings or other sealing components, preventing liquid from contacting the air bladder 5 and causing damage. Multiple air bladders 5 adhere to each other to form a good seal. The fixing plate 6 is fixedly connected to the inner side wall of the compensation box 3, and the adjusting cylinder 7 is fixedly connected to the side wall of the fixing plate 6.
[0016] A buffer cylinder 8 is fixedly connected to the inner wall of the compensation box 3. The buffer cylinder 8 stores hydraulic oil. A buffer plate 9 is slidably connected to the inner wall of the buffer cylinder 8. The buffer plate 9 has multiple oil leakage holes. When the buffer plate 9 slides in the buffer cylinder 8, the hydraulic oil will pass through the oil leakage holes to buffer the buffer plate 9 and prevent it from moving too fast.
[0017] A compensating rod 10 is fixedly connected to the side wall of the buffer plate 9. The compensating rod 10 is slidably connected to the side wall of the buffer cylinder 8. A compensating ball 11 is fixedly connected to the end of the compensating rod 10 away from the buffer plate 9. The compensating ball 11 is slidably connected to the tank body 2. The surface of the compensating ball 11 is very smooth and wear-resistant.
[0018] An adjusting plate 12 is slidably connected to the inner wall of the adjusting cylinder 7. An adjusting rod 13 is fixedly connected to the side wall of the adjusting plate 12. The adjusting rod 13 is slidably connected to one side wall of the adjusting cylinder 7. The adjusting rod 13 and the adjusting cylinder 7 are not sealed. A Z-shaped plate 16 is fixedly connected to the end of the adjusting rod 13 away from the adjusting plate 12. The Z-shaped plate 16 is fixedly connected to the compensating rod 10. An adjusting spring 17 is fixedly connected between the Z-shaped plate 16 and the buffer cylinder 8. This is only suitable for the whole to undergo a certain deformation or insufficient roundness. It is not suitable for large deformation in a local area, such as a small dent or a large pit. In such cases, the tank body 2 needs to be repaired.
[0019] An air inlet pipe 14 and an air outlet pipe 15 are fixedly connected between the regulating cylinder 7 and the air bag 5, respectively. Both the air inlet pipe 14 and the air outlet pipe 15 are equipped with one-way valves. The flow direction of the one-way valve in the air inlet pipe 14 is from the air bag 5 to the regulating cylinder 7, and the flow direction of the one-way valve in the air outlet pipe 15 is from the regulating cylinder 7 to the air bag 5.
[0020] In this invention, when the floating plate body 1 slides along the inner wall of the tank 2 as the liquid level rises and falls within the tank 2, multiple airbags 5 drive the sealing rubber ring to slide up and down along the tank 2. When the tank 2 undergoes slight deformation, such as denting or protrusion, the airbags 5 and the rubber ring will first be squeezed or stretched and deformed, fitting the dented or protruding part, without hindering the sliding of the floating plate body 1, thus preventing it from getting stuck and causing bending damage. At the same time, it can still maintain a seal at the deformed part.
[0021] Subsequently, the compensation ball 11 will also contact the protrusions or depressions of the tank body 2. When it contacts the protrusions of the tank body 2, it will squeeze the compensation ball 11 and the adjusting spring 17. The compensation rod 10 pulls the adjusting rod 13 and the adjusting plate 12 outward through the Z-shaped plate 16. The one-way valve in the air inlet pipe 14 opens and the one-way valve in the air outlet pipe 15 closes. The gas in the airbag 5 enters the adjusting cylinder 7 through the air inlet pipe 14, causing the airbag 5 to drive the rubber ring to contract inward, avoiding excessive squeezing force that may cause jamming or excessive friction that may damage the rubber ring. When it contacts the tank body... 2. When the dent is formed, under the elastic force of the adjusting spring 17, the compensating rod 10 pulls the adjusting rod 13 and the adjusting plate 12 inward through the Z-shaped plate 16. The one-way valve in the air inlet pipe 14 is closed, and the one-way valve in the air outlet pipe 15 is opened. The gas in the adjusting cylinder 7 enters the airbag 5 through the air outlet pipe 15, causing the airbag 5 to expand outward with the rubber ring, making it fit the dent more closely. The amount of gas in the airbag 5 is dynamically adjusted according to the contact area to keep the contact force at an appropriate level, avoiding insufficient contact force leading to a decrease in sealing and leakage, or excessive contact force causing jamming or damage.
[0022] When the liquid level changes rapidly, the floating roof body 1 slides up and down inside the tank 2. When the force is uneven, it is squeezed to one side. At this time, multiple compensation balls 11 on that side are squeezed. The compensation balls 11 drive the compensation rod 10 and the buffer plate 9 to squeeze inward rapidly. The hydraulic oil in the buffer cylinder 8 passes through the oil leakage hole to absorb the shaking force and slow down the shaking, so as to avoid large-scale shaking damage to the floating roof body 1. The compensation balls 11 on the other side will also protrude outward due to the reduction of the squeezing force, causing the airbag 5 on the other side to drive the rubber ring to expand, preventing leakage and ensuring safety performance.
[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.
[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A prefabricated, fully liquid-contact, double-disc stainless steel floating roof, comprising a floating roof body (1), wherein the floating roof body (1) is slidably connected within a tank body (2), characterized in that, The floating roof body (1) is equipped with a compensation mechanism, which includes a compensation box (3), a U-shaped plate (4), an airbag (5), a fixing plate (6), and an adjusting cylinder (7). Multiple compensation boxes (3) are arranged in a circular array on the side wall of the floating roof body (1). Each compensation box (3) has an opening on its side wall. The U-shaped plate (4) is fixedly connected to the opening. The airbag (5) is fixedly connected to the side wall of the U-shaped plate (4). The fixing plate (6) is fixedly connected to the inner side wall of the compensation box (3). The adjusting cylinder (7) is fixedly connected to the side wall of the fixed plate (6). The buffer cylinder (8) is fixedly connected to the inner side wall of the compensation box (3). The buffer plate (9) is slidably connected to the inner side wall of the buffer cylinder (8). The compensation rod (10) is fixedly connected to the side wall of the buffer plate (9). The compensation rod (10) is slidably connected to the side wall of the buffer cylinder (8). The end of the compensation rod (10) away from the buffer plate (9) is fixedly connected to the compensation ball (11). The compensation ball (11) is slidably connected to the tank body (2).
2. The assembled fully wetted double-disc stainless steel floating roof according to claim 1, characterized in that, An adjusting plate (12) is slidably connected to the inner side wall of the adjusting cylinder (7), and an adjusting rod (13) is fixedly connected to the side wall of the adjusting plate (12). The adjusting rod (13) is slidably connected to one side wall of the adjusting cylinder (7).
3. The assembled fully wetted double-disc stainless steel floating roof according to claim 1, characterized in that, The regulating cylinder (7) and the airbag (5) are respectively connected by an air inlet pipe (14) and an air outlet pipe (15), and both the air inlet pipe (14) and the air outlet pipe (15) are equipped with one-way valves.
4. The assembled fully wetted double-disc stainless steel floating roof according to claim 2, characterized in that, A Z-shaped plate (16) is fixedly connected to one end of the adjusting rod (13) away from the adjusting plate (12). The Z-shaped plate (16) is fixedly connected to the compensating rod (10). An adjusting spring (17) is fixedly connected between the Z-shaped plate (16) and the buffer cylinder (8).