A telescopic closure device for a tank guide column

Abstract

The utility model discloses a telescopic airtight device of oil tank guide column relates to oil tank component technical field, and its technical key points include two first bellows and two second bellows of setting in the guide column body outside, first bellows and second bellows side wall all are fixedly connected with two connecting disc, first bellows and second bellows are connected through the connecting mechanism, the connecting mechanism includes the multiple first bolt of setting on the connecting disc, the utility model discloses a connecting mechanism is set up, and the whole sealing structure is composed of two first bellows and two second bellows, replaces traditional single long bellows, when one of first bellows or second bellows breaks, only needs to replace the damaged component, does not need to replace the whole sealing structure, and the material waste is greatly reduced, and the equipment maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of oil tank component technology, and in particular to a telescopic sealing device for an oil tank guide column. Background Technology

[0002] Atmospheric pressure metal storage tanks are core equipment for storing petroleum, petroleum products and other liquid media. Their main body is a vertical cylindrical welded steel storage tank. According to relevant industry standards and specifications, the top of the oil storage tank must be equipped with an oil gauging pipe or guide column. The guide column not only undertakes the function of measuring oil quality, but its core function is to limit the rotation of the floating roof and ensure that the floating roof rises and falls stably in the vertical direction inside the storage tank.

[0003] In traditional top-mounted oil storage tank structures, the gap at the connection between the guide column (pipe) and the tank top is usually sealed using a single corrugated pipe. However, the traditional sealing solution has significant drawbacks: to achieve effective sealing coverage, the corrugated pipe needs to be designed as a long, integrated structure. In practical applications, if a part of the corrugated pipe is damaged or ages, resulting in sealing failure, the entire sealing structure must be dismantled and replaced because it is impossible to repair the damaged area separately. This leads to a large amount of material waste and increases operation and maintenance costs. To solve the above problems, this utility model proposes a telescopic sealing device for the guide column of an oil tank. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a telescopic sealing device for oil tank guide columns, which solves the problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention adopts the following technical solution: a telescopic sealing device for an oil tank guide column, comprising: two first corrugated pipes and two second corrugated pipes sleeved on the body of the guide column, wherein two connecting discs are fixedly connected to the side walls of the first and second corrugated pipes, and the first and second corrugated pipes are connected by a connecting mechanism, wherein the connecting mechanism includes a plurality of first bolts provided on the connecting discs, and a first nut is provided on the first bolts, wherein two mounting plates are fixedly connected to the side walls of the two connecting discs, and a limiting mechanism for restricting the movement of the first and second corrugated pipes is provided between the two mounting plates in the vertical direction.

[0006] Preferably, the limiting mechanism includes two limiting rods disposed on the side walls of the two mounting plates, and a plurality of limiting frames are slidably connected to the two limiting rods, the limiting frames being fixedly connected to adjacent connecting plates.

[0007] Preferably, the limiting rod has a U-shaped cross-section, and multiple second bolts are provided on both inner walls of the limiting rod.

[0008] Preferably, the side wall of the limiting rod is provided with multiple through slots, and the multiple through slots are arranged at equal intervals.

[0009] Preferably, each of the connecting discs has a fixed cylinder fixedly connected to its sidewall, and a protective cylinder is threaded onto the fixed cylinder.

[0010] (III) Beneficial Effects Compared with the prior art, the present invention has the following beneficial effects: This invention, by setting a connecting mechanism, makes the entire sealing structure consist of two first corrugated pipes and two second corrugated pipes, replacing the traditional single long corrugated pipe. When one of the first or second corrugated pipes is damaged, only the damaged component needs to be replaced, without replacing the entire sealing structure, which greatly reduces material waste and lowers equipment maintenance costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a telescopic sealing device for an oil tank guide column proposed in this utility model. Figure 2 for Figure 1 Enlarged view of the structure at point A; Figure 3 This is a side view of a telescopic sealing device for an oil tank guide column proposed in this utility model. Figure 4 for Figure 3 Enlarged view of the structure at point B; Figure 5 This is another side view of a telescopic sealing device for an oil tank guide column proposed in this utility model.

[0012] In the diagram: 1. Guide column body, 2. Mounting platform, 3. First corrugated pipe, 4. Second corrugated pipe, 5. Connecting plate, 6. Limiting rod, 7. Fixing cylinder, 8. Protective cylinder, 9. Mounting plate, 10. Through groove, 11. Limiting frame. Detailed Implementation

[0013] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0014] This utility model provides a technical solution: Please see Figures 1-5A telescopic sealing device for an oil tank guide column includes: two first corrugated pipes 3 and two second corrugated pipes 4 sleeved outside the guide column body 1. The guide column body 1 is mounted on two mounting platforms 2. Two connecting discs 5 are fixedly connected to the side walls of the first corrugated pipes 3 and the second corrugated pipes 4. More folds of the first corrugated pipes 3 and the second corrugated pipes 4 are not shown in the figure. The first corrugated pipes 3 and the second corrugated pipes 4 are connected by a connecting mechanism. The connecting mechanism includes multiple first bolts provided on the connecting discs 5. The first bolts are provided with first nuts. Two mounting plates 9 are fixedly connected to the side walls of the two connecting discs 5. The uppermost and lowermost connecting discs 5 are connected to the mounting platforms 2 by multiple third bolts (the third bolts are shown in the figure).

[0015] A limiting mechanism is provided between the two vertical mounting plates 9 to restrict the movement of the first corrugated pipe 3 and the second corrugated pipe 4. The limiting mechanism includes two limiting rods 6 set on the side walls of the two mounting plates 9. Multiple limiting frames 11 are slidably connected to the two limiting rods 6. The limiting frames 11 are fixedly connected to the adjacent connecting plate 5.

[0016] Furthermore, the limiting rod 6 has a U-shaped cross-section, and multiple second bolts are provided on both inner walls of the limiting rod 6, so that the limiting rod 6 can be disassembled after installation without the need for welding.

[0017] Furthermore, the side wall of the limiting rod 6 is provided with multiple through slots 10, which are equally spaced. This further reduces the weight of the rod and the overall load on the equipment without significantly affecting its structural strength.

[0018] Furthermore, each of the connecting discs 5 has a fixed sleeve 7 fixedly connected to its side wall, and a protective sleeve 8 is threadedly connected to the fixed sleeve 7. This effectively isolates the first bolt, the first nut, and the third bolt from the external environment, preventing the bolts and nuts from being exposed to the air for a long time and being corroded by rainwater, dust, oil volatiles, etc., thus preventing rust from causing loosening of the connection or difficulty in disassembly. The threaded connection method makes it easy to install and remove the protective sleeve 8, without affecting the daily inspection and maintenance of the bolts and nuts, ensuring the long-term reliable operation of the connection mechanism.

[0019] In practical use, the working principle of this utility model is as follows: When the oil storage tank is operating normally, the floating roof rises and falls vertically along with the change in the oil level in the tank. The floating roof drives the guide column body 1 to move synchronously. At this time, the two first bellows 3 and the two second bellows 4 sleeved on the outside of the guide column body 1 will expand and contract with the rise and fall of the guide column body 1. Through their own elastic deformation, the guide column body 1 and the top of the tank are dynamically sealed, preventing the leakage of oil volatiles and the entry of external impurities into the storage tank. In this process, the two limiting rods 6 on the vertical mounting plate 9 play a key role: the limiting frame 11, which is fixedly connected to the connecting plate 5, slides along the limiting rods 6. On the one hand, it precisely limits the extension and retraction direction of the first bellows 3 and the second bellows 4, preventing them from shifting laterally or twisting due to force, ensuring that the sealing structure always remains coaxial with the guide column body 1, and guaranteeing the sealing effect; on the other hand, the limiting rods 6 support the first bellows 3 and the second bellows 4, sharing the weight of the bellows and the pressure of the medium, reducing the load at the sealing connection, and preventing the bellows from prematurely aging or breaking due to long-term uneven stress. If a leak is detected in one of the first bellows 3 or the second bellows 4 during the operation of the storage tank, resulting in a seal failure, the entire sealing device can be removed. The leaked first bellows 3 or the second bellows 4 can be taken off, a new component can be replaced, and then the device can be reconnected to the adjacent connecting plate 5 via the first bolt and the first nut to complete the repair. The whole process is simple and does not require the replacement of the entire sealing structure.

[0020] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A telescopic sealing device for an oil tank guide column, comprising: The first corrugated pipe (3) and the second corrugated pipe (4) sleeved outside the guide post body (1) are characterized in that: the side walls of the first corrugated pipe (3) and the second corrugated pipe (4) are fixedly connected to two connecting discs (5), the first corrugated pipe (3) and the second corrugated pipe (4) are connected by a connecting mechanism, the connecting mechanism includes a plurality of first bolts provided on the connecting discs (5), the first bolts are provided with first nuts, and the side walls of the two connecting discs (5) are fixedly connected to two mounting plates (9), and a limiting mechanism for restricting the movement of the first corrugated pipe (3) and the second corrugated pipe (4) is provided between the two mounting plates (9) in the vertical direction.

2. The telescopic sealing device for an oil tank guide column according to claim 1, characterized in that: The limiting mechanism includes two limiting rods (6) disposed on the side walls of two mounting plates (9), and multiple limiting frames (11) are slidably connected on the two limiting rods (6). The limiting frames (11) are fixedly connected to the adjacent connecting plate (5).

3. The telescopic sealing device for an oil tank guide column according to claim 2, characterized in that: The limiting rod (6) has a U-shaped cross section, and multiple second bolts are provided on both inner walls of the limiting rod (6).

4. The telescopic sealing device for an oil tank guide column according to claim 3, characterized in that: The side wall of the limiting rod (6) is provided with multiple through slots (10), and the multiple through slots (10) are arranged at equal intervals.

5. The telescopic sealing device for an oil tank guide column according to claim 4, characterized in that: Each of the connecting discs (5) has a fixed cylinder (7) fixedly connected to its side wall, and a protective cylinder (8) is threaded onto the fixed cylinder (7).

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