Large-compensation sealing structure of floating disc of floating-roof oil tank

Abstract

The utility model discloses a large-compensation sealing structure of a floating disc of a floating-roof oil tank, and belongs to the technical field of floating disc sealing. Comprising oil tanks and floating discs, a sealing sliding plate is arranged on the lower portion of the outer side of the floating disc, a plurality of Z-shaped scraping plates are installed at the upper end of the floating disc through bolts at equal angles, sealing bags are arranged at the lower ends of the Z-shaped scraping plates and communicated with two pipelines, electric control valves are arranged on the two pipelines respectively, and an inflation pump is arranged at the end of one pipeline. The two pipelines communicated with the sealing bag are arranged, the electric control valves are arranged on the pipelines, and the inflator pump is arranged at the end of one pipeline, so that the floating disc can be deflated when ascending or descending, and abrasion is avoided.

Description

Technical Field

[0001] The utility model provides a large compensation sealing structure of a floating plate of a floating roof oil tank, belonging to the technical field of floating plate sealing. Background Art

[0002] The floating plate of a floating roof tank, also known as a floating cover or floating roof, is an important component of a large metal oil storage tank, especially an external floating roof tank. The floating plate is located above the oil in the tank, and floats up and down with the rise and fall of the oil, always maintaining close contact with the oil surface, thereby greatly reducing the contact area between the oil and the air, reducing the evaporation loss of the oil, and effectively preventing the accumulation of oil and gas and the entry of oxygen into the tank, thereby improving the safety performance of the tank.

[0003] Currently, there are three traditional sealing methods for floating plates. One is to design a hanging plate on the floating plate with the outer side fitting the inner wall of the oil tank. The other is to design a sealing bag filled with air on the side of the floating plate. The third is a combination of the first two sealing methods. However, when the first method is used, the hanging plate repeatedly rubs against the inner wall of the oil tank, which will cause a gap between the two. When the second method is used, the sealing bag will also rub against the inner wall of the oil tank. Long-term use will cause the part of the sealing bag that contacts the inner wall of the oil tank to become thinner, so regular maintenance is required. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing sealing bags will cause wear and tear after long-term use.

[0005] In order to solve the above problems, the utility model proposes a technical solution: a large compensation sealing structure of a floating plate of a floating roof oil tank, comprising an oil tank and a floating plate; a sealing slide plate is provided at the lower outer portion of the floating plate, a plurality of Z-shaped scrapers are installed at equal angles on the upper end of the floating plate by bolts, a sealing bag is provided at the lower end of the Z-shaped scraper, the sealing bag is connected to two pipes, the two pipes are respectively provided with electric control valves, and an air pump is provided at the end of one of the pipes.

[0006] As an improvement, the outer side of the sealing slide plate is in contact with the inner wall of the oil tank.

[0007] As an improvement, a bolt hole is provided at the upper end of the floating plate near the outer edge.

[0008] As an improvement, bolt holes corresponding to the floating plate are provided on the Z-shaped scraper, and the outer end side wall of the Z-shaped scraper fits the inner wall of the oil tank.

[0009] As an improvement, when the sealing bag is inflated, the outer side adheres to the inner wall of the oil tank and the inner side adheres to the side wall of the floating plate. When the sealing bag is deflated, the inner side adheres to the side wall of the floating plate, and the outer side and the lower end do not contact the inner wall of the oil tank and the sealing slide plate.

[0010] Beneficial effects of the utility model:

[0011] By arranging two pipes connected to the sealing bags, arranging electric control valves on the pipes, and arranging an air pump at the end of one pipe, the floating plate can be deflated when rising or floating down, thereby preventing wear and tear. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a large compensation seal structure of a floating plate of a floating roof oil tank of the utility model. Figure 1 .

[0013] Figure 2 This is a schematic diagram of the structure of a large compensation seal structure of a floating plate of a floating roof oil tank of the utility model. Figure 2 .

[0014] Figure 3 The utility model is a cross-sectional view of a large compensating sealing structure of a floating plate of a floating roof oil tank.

[0015] 1. Oil tank; 2. Floating plate; 3. Sealing slide plate; 4. Bolts; 5. Z-shaped scraper; 6. Sealing bag; 7. Pipeline; 8. Electric control valve; 9. Air pump. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] according to Figure 1 —3: The utility model provides a large compensation sealing structure of a floating plate of a floating roof oil tank: comprising an oil tank 1 and a floating plate 2; a sealing slide plate 3 is provided on the lower outer side of the floating plate 2, a plurality of Z-shaped scrapers 5 are installed at equal angles on the upper end of the floating plate 2 through bolts 4, a sealing bag 6 is provided on the lower end of the Z-shaped scraper 5, the sealing bag 6 is connected to two pipes 7, the two pipes 7 are respectively provided with an electric control valve 8, an air pump 9 is provided at the end of one of the pipes 7, the outer side of the sealing slide plate 3 is in contact with the inner wall of the oil tank 1, a bolt hole is provided on the upper end of the floating plate 2 near the outer edge, and the Z-shaped scraper 5 is provided with bolt holes corresponding to the floating plate 2, the outer end side wall of the Z-shaped scraper 5 is in contact with the inner wall of the oil tank 1, and the outer side of the sealing bag 6 is in contact with the inner wall of the oil tank 1 and the inner side is in contact with the side wall of the floating plate 2 when the sealing bag 6 is inflated. When the sealing bag 6 is deflated, the inner side is in contact with the side wall of the floating plate 2, and the outer side and the lower end do not contact the inner wall of the oil tank 1 and the sealing slide plate 3; by arranging two pipes 7 connecting the sealing bags, arranging an electric control valve 8 on the pipes 7, and arranging an air pump 9 at the end of one pipe 7, the floating plate 2 can be deflated when rising or floating, so as not to cause wear.

[0018] The principle of the utility model is as follows: when the oil in the oil tank 1 increases or decreases, the electric control valve 8 on the pipeline 7 without the air pump 9 is first started to discharge the air in the sealing bag 6, and then the valve 8 is closed, and then the floating plate 2 will rise or fall, and the floating plate 2 will drive the sealing slide plate 3 to rise or fall while rising or falling, so that the oil in the oil tank 1 can obtain a preliminary sealing effect. When the oil stops rising or falling, the electric control valve 8 and the air pump 9 on the pipeline 7 with the air pump 9 are started, and the air pump 9 will convey air into the sealing bag 6, so that the outer side of the sealing bag 6 fits the inner wall of the oil tank 1, and the inner side fits the side wall of the floating plate 2, so that a secondary seal is formed, so that the oil inside the oil tank 1 has a better sealing performance.

[0019] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A large compensating seal structure for a floating plate of a floating roof oil tank, comprising an oil tank (1) and a floating plate (2); characterized in that: A sealing slide plate (3) is provided at the lower outer side of the floating plate (2); a plurality of Z-shaped scrapers (5) are installed at equal angles on the upper end of the floating plate (2) through bolts (4); a sealing bag (6) is provided at the lower end of the Z-shaped scraper (5); the sealing bag (6) is connected to two pipes (7); the two pipes (7) are respectively provided with electric control valves (8); and an air pump (9) is provided at the end of one of the pipes (7).

2. The large compensation seal structure of the floating plate of a floating roof oil tank according to claim 1, characterized in that: The outer side of the sealing slide plate (3) is in contact with the inner wall of the oil tank (1).

3. The large compensation seal structure of the floating plate of a floating roof oil tank according to claim 1, characterized in that: The upper end of the floating plate (2) is provided with bolt holes close to the outer edge.

4. The large compensation seal structure of the floating plate of a floating roof oil tank according to claim 1, characterized in that: The Z-shaped scraper (5) is provided with bolt holes corresponding to the floating plate (2), and the outer end side wall of the Z-shaped scraper (5) fits the inner wall of the oil tank (1).

5. The large compensation seal structure of the floating plate of a floating roof oil tank according to claim 1, characterized in that: When the sealing bag (6) is inflated, the outer side is in contact with the inner wall of the oil tank (1), and the inner side is in contact with the side wall of the floating plate (2); when the sealing bag (6) is deflated, the inner side is in contact with the side wall of the floating plate (2), and the outer side and the lower end do not contact the inner wall of the oil tank (1) and the sealing slide plate (3).

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