Self-adaptive compensation type double-seal floating disc

Abstract

The invention relates to the technical field of floating discs, in particular to a self-adaptive compensation type double-seal floating disc. The self-adaptive compensation type double-sealing floating disc comprises an oil storage tank, rectangular grooves are formed in the left side and the right side of the inner wall of the oil storage tank, a floating disc body is slidably arranged in the oil storage tank, a threaded rod is driven by a double-shaft motor to rotate, and two L-shaped plates drive a connecting block and a push plate to be opened towards the two sides; when the rubber rings are abraded, the double-shaft motor operates again to drive the two second arc-shaped rings to move towards the left side and the right side, and meanwhile, a push plate abuts against the arc-shaped cut corners, so that the two first arc-shaped rings move towards the front side and the rear side, and the rubber rings on the side faces of the first arc-shaped rings and the second arc-shaped rings seal the oil storage tank; the first arc-shaped ring and the second arc-shaped ring move to be more attached to the side face of the inner wall of the oil storage tank, the sealing effect of the floating disc on the side face of the inner wall of the oil storage tank can be guaranteed, and the oil-gas leakage risk of the inner wall of the oil storage tank is reduced.

Description

Technical Field

[0001] This invention relates to the field of floating roof technology, specifically to an adaptive compensation double-sealed floating roof. Background Technology

[0002] The floating roof, also known as the floating cover or floating roof, is the core sealing component of a floating roof tank. It is an indispensable key structure in large external floating roof tanks and other metal oil storage facilities. Its core function is to float directly above the surface of the stored oil inside the tank. As the volume of oil in the tank increases or decreases, the floating roof can sensitively rise and fall accordingly, always maintaining a close contact between its lower surface and the oil surface. This dynamic contact creates a physical barrier that almost completely covers the liquid surface and moves with the liquid level. Its most significant benefit is that it greatly reduces the amount of oil exposed to the upper gas phase. The reduction in surface area directly brings multiple core advantages. First, it effectively inhibits the evaporation and dissipation of light components in the oil, significantly reducing the evaporation loss of the oil. Second, it greatly restricts the formation and accumulation space of oil-gas mixture inside the tank. At the same time, it also blocks the free diffusion of external air to the space above the oil inside the tank. Through these mechanisms, the floating roof not only improves the economic efficiency of oil storage, but more importantly, it greatly enhances the inherent safety performance of the oil storage tank, which is a key guarantee for the safe, environmentally friendly and efficient operation of large oil tanks.

[0003] In existing floating roof sealing systems for large oil storage tanks, an inflatable rubber sealing bag is typically installed around the outer edge of the floating roof. This bag, filled with air, forms an effective dynamic seal against the inner wall of the tank, preventing oil and gas from escaping. However, during long-term operation, the floating roof frequently rises and falls with changes in the oil level. In this continuous reciprocating motion, the outer surface of the sealing bag inevitably experiences constant frictional contact with the rough inner wall of the tank. This accumulated friction significantly affects the side of the sealing bag in contact with the tank wall, causing wear and thinning of the rubber material in that area. When the wear reaches a certain level, the integrity and sealing performance of the sealing bag decrease, posing a risk of oil and gas leakage.

[0004] In view of this, we propose an adaptive compensation double-sealed floating roof. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive compensation double-seal floating roof to solve the problem mentioned in the background art: during long-term operation, the floating roof frequently rises and falls with changes in oil level. In this continuous reciprocating motion, the outer surface of the sealing bag inevitably experiences continuous frictional contact with the rough inner wall of the tank. This accumulated frictional force significantly affects the side of the sealing bag in contact with the tank wall, causing wear and thinning of the rubber material in that area. When the wear reaches a certain level, the integrity and sealing performance of the sealing bag decrease, posing a risk of oil and gas leakage. To achieve the above objective, this invention provides the following technical solution: an adaptive compensation double-seal floating roof, comprising an oil storage tank. Rectangular grooves are formed on both the left and right sides of the inner wall of the oil storage tank. A floating roof body is slidably disposed inside the oil storage tank. A limiting mechanism for limiting the movement of the floating roof body is fixedly disposed on the top of the floating roof body. An annular groove is formed on the side of the floating roof body, and a sealing component for sealing the oil storage tank is slidably connected inside the annular groove.

[0006] Preferably, the limiting mechanism includes a connecting plate fixed to the upper side of the floating plate body. A dual-axis motor is fixedly connected to the center of the top surface of the connecting plate. L-shaped grooves are formed on both the left and right sides of the top of the connecting plate. L-shaped plates are slidably connected inside the L-shaped grooves. Threaded rods are fixedly connected to the sides of the left and right rotating shafts of the dual-axis motor. The opposite ends of the two threaded rods pass through opposite sides of the two vertical plates of the two L-shaped plates. A limiting plate is fixedly connected to one end of each threaded rod. The side of the horizontal plate of the L-shaped plate slides against the side of the inner wall of the rectangular groove. A protective frame is fixedly connected to the top of the connecting plate, providing protective enclosure for the dual-axis motor and the threaded rods. When the dual-axis motor starts, its output shaft drives the threaded rods on both sides to rotate synchronously, thereby precisely controlling the two L-shaped plates to perform symmetrical radial opening or closing movements.

[0007] Preferably, the sealing assembly includes two first arc-shaped rings, which are slidably connected to the front and rear sides of the inner wall of the annular groove, respectively. Each of the two first arc-shaped rings has an arc-shaped chamfer on its opposite side. Movable grooves are provided on the left and right sides of the top of the floating plate body. The first arc-shaped rings can seal the front and rear sides of the inner wall of the oil storage tank.

[0008] Preferably, a push plate is fixedly connected to the bottom of the L-shaped plate, and the side of the push plate is slidably connected to the inside of the moving groove. The shape of the push plate is an isosceles trapezoid and the side of the push plate abuts against the side of the arc-shaped chamfer. When the L-shaped plate drives the push plate to move and abuts against the side of the arc-shaped chamfer, it can drive the two first arc-shaped rings to be squeezed outward.

[0009] Preferably, T-shaped grooves are provided on both the front and rear sides of the floating disk body. T-shaped blocks are slidably arranged inside the T-shaped grooves. A tension spring is fixedly connected to the side of the horizontal block of the T-shaped block. One end of the tension spring is fixedly connected to the side of the horizontal block of the T-shaped block. The side of the vertical block of the T-shaped block is fixedly connected to the side of the first arc-shaped ring. When the dual-axis motor drives the threaded rod to rotate and moves the two L-shaped plates inward, it can drive the push plate to move, releasing the pushing plate from the squeezing state of the arc-shaped chamfer and the first arc-shaped ring. Then, the first arc-shaped ring closes inward through the rebound force of the T-shaped block and the tension spring.

[0010] Preferably, an annular frame is fixedly sleeved on the outer side of the connecting plate, and an O-shaped groove is formed in the middle of the side of the annular frame. A second arc-shaped ring is slidably connected to both sides of the inner wall of the O-shaped groove. Long grooves are fixedly formed on both sides of the bottom surface of the annular frame, and a connecting block is slidably connected inside the long groove. The side of the connecting block is fixedly connected to the top of the horizontal plate of the L-shaped plate. The front and rear sides of the inner wall of the oil storage tank can be sealed by the second arc-shaped ring.

[0011] Preferably, rubber rings are fixedly connected to the sides of both the first and second arc-shaped rings. The rubber rings abut against the sides of the inner wall of the oil storage tank. The rubber rings fixed to the sides of the first and second arc-shaped rings directly and elastically contact the inner wall of the oil storage tank, which significantly enhances and optimizes the overall sealing performance of the annular sealing assembly.

[0012] Preferably, the length inside the moving groove and the length inside the long groove are equal to the length inside the transverse groove of the L-shaped groove. During the entire movement of the L-shaped plate in the L-shaped groove, it performs precise synchronous linear motion under the guidance constraints of the long groove and the moving groove through the connecting block and the push plate rigidly connected at its top and bottom. The movement of each component is coordinated and there is no movement interference.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] In this invention, a dual-axis motor drives a threaded rod to rotate, causing two L-shaped plates to open to both sides, along with connecting blocks and push plates. This moves two second arc-shaped rings to the left and right sides. Simultaneously, the push plate abuts against the arc-shaped chamfer, causing the two first arc-shaped rings to move forward and backward. This seals the rubber rings on the sides of the first and second arc-shaped rings against the oil storage tank. When the rubber rings wear out, the dual-axis motor is run again, causing the first and second arc-shaped rings to move to a position that fits more closely against the inner wall of the oil storage tank. This ensures the sealing effect of the floating roof against the inner wall of the oil storage tank and reduces the risk of oil and gas leakage from the inner wall of the oil storage tank.

[0015] In this invention, after the floating roof is placed inside the oil storage tank, a dual-shaft motor drives a threaded rod to rotate. The L-shaped groove limits the L-shaped plate, causing the two L-shaped plates to open outwards simultaneously as the threaded rod rotates. At this time, the L-shaped plates move into the rectangular groove, thus limiting the floating plate through the L-shaped plate and the L-shaped groove. This prevents the pressure generated when the floating roof body is placed against the inner wall of the oil storage tank from causing the oil to slosh, which could lead to the floating roof body sloshing inside the oil storage tank and potentially getting stuck against the inner wall of the oil storage tank.

[0016] In this invention, a dual-axis motor drives a threaded rod to rotate counterclockwise, causing two L-shaped plates to move inward, along with their side connecting blocks and push plates. Two second arc-shaped rings move into the O-shaped groove, while the push plate releases its contact with the first arc-shaped ring. This allows the two first arc-shaped rings and two T-shaped blocks to close inward into the annular groove via tension springs. Simultaneously, the two horizontal plates of the two L-shaped plates move from the rectangular groove into the L-shaped groove, releasing the restriction on the oil storage tank. This allows the floating roof body to be quickly removed from the oil storage tank, and the rubber rings on its upper side to be replaced quickly. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural unfolded view of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the floating table body of the present invention;

[0020] Figure 4 This is a three-dimensional structural unfolded view of the floating disk body of the present invention;

[0021] Figure 5 This is a partial three-dimensional structural development view of the sealing assembly of the present invention;

[0022] Figure 6 This is a partial three-dimensional cross-sectional view of the connecting plate of the present invention;

[0023] Figure 7 This is a partial three-dimensional structural unfolded view of the floating disk body of the present invention;

[0024] Figure 8 This is a partial three-dimensional cross-sectional view of the sealing assembly of the present invention.

[0025] In the diagram: 1. Oil storage tank; 2. Rectangular groove; 3. Floating roof body; 301. Moving groove; 302. Push plate; 4. Limiting mechanism; 401. Connecting plate; 402. Dual-shaft motor; 403. L-shaped groove; 404. L-shaped plate; 405. Threaded rod; 406. Limiting plate; 407. Protective frame; 5. Annular groove; 6. Sealing assembly; 601. First arc-shaped ring; 602. Arc-shaped chamfer; 603. T-shaped groove; 604. T-shaped block; 605. Annular frame; 606. O-shaped groove; 607. Second arc-shaped ring; 608. Long groove; 609. Connecting block; 6010. Rubber ring; 6011. Tension spring. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1 to 8 The present invention provides a technical solution: an adaptive compensation double-sealed floating roof, including an oil storage tank 1, rectangular grooves 2 are provided on both the left and right sides of the inner wall of the oil storage tank 1, a floating roof body 3 is slidably arranged inside the oil storage tank 1, a limiting mechanism 4 for limiting the floating roof body 3 is fixedly arranged on the top of the floating roof body 3, an annular groove 5 is provided on the side of the floating roof body 3, and a sealing component 6 for sealing the oil storage tank 1 is slidably connected inside the annular groove 5.

[0028] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, the limiting mechanism 4 includes a connecting plate 401, which is fixed to the upper side of the floating plate body 3. A dual-axis motor 402 is fixedly connected to the middle of the top surface of the connecting plate 401. L-shaped grooves 403 are provided on both the left and right sides of the top of the connecting plate 401. L-shaped plates 404 are slidably connected inside the L-shaped grooves 403. Threaded rods 405 are fixedly connected to the sides of the left and right rotating shafts of the dual-axis motor 402. The opposite ends of the two threaded rods 405 pass through the opposite sides of the two vertical plates of the two L-shaped plates 404. A limiting plate 406 is fixedly connected to one end of the threaded rods 405. The side of the horizontal plate of the L-shaped plate 404 slides with the side of the inner wall of the rectangular groove 2. A protective frame 407 is fixedly connected to the top of the connecting plate 401. The protective frame 407 can protect the dual-axis motor 402 and the threaded rods 405. When the dual-axis motor 402 rotates, it can drive the two L-shaped plates 404 to open to the left and right or close inward at the same time through the two threaded rods 405.

[0029] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, the sealing assembly 6 includes two first arc-shaped rings 601, which are slidably connected to the front and rear sides of the inner wall of the annular groove 5. Each of the two first arc-shaped rings 601 has an arc-shaped chamfer 602 on its opposite side. The top of the floating plate body 3 has a moving groove 301 on both the left and right sides. The first arc-shaped rings 601 can seal the front and rear sides of the inner wall of the oil storage tank 1.

[0030] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, a push plate 302 is fixedly connected to the bottom of the L-shaped plate 404. The side of the push plate 302 is slidably connected to the inside of the moving groove 301. The shape of the push plate 302 is an isosceles trapezoid and the side of the push plate 302 abuts against the side of the arc-shaped chamfer 602. When the L-shaped plate 404 drives the push plate 302 to move and abuts against the side of the arc-shaped chamfer 602, it can drive the two first arc-shaped rings 601 to be squeezed outward.

[0031] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, T-shaped grooves 603 are provided on both the front and rear sides of the floating disk body 3. T-shaped blocks 604 are slidably arranged inside the T-shaped grooves 603. A tension spring 6011 is fixedly connected to the side of the horizontal block of the T-shaped block 604. One end of the tension spring 6011 is fixedly connected to the side of the horizontal block of the T-shaped block 604. The side of the vertical block of the T-shaped block 604 is fixedly connected to the side of the first arc ring 601. When the dual-axis motor 402 drives the threaded rod 405 to rotate and moves the two L-shaped plates 404 inward, it can drive the push plate 302 to move, releasing the pushing plate 302 from the squeezing state of the arc chamfer 602 and the first arc ring 601. Then, the first arc ring 601 closes inward by the rebound force of the T-shaped block 604 and the tension spring 6011.

[0032] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8As shown, an annular frame 605 is fixedly sleeved on the outer side of the connecting plate 401. An O-groove 606 is provided in the middle of the side of the annular frame 605. A second arc-shaped ring 607 is slidably connected to both sides of the inner wall of the O-groove 606. Long grooves 608 are fixedly provided on both sides of the bottom surface of the annular frame 605. A connecting block 609 is slidably connected inside the long groove 608. The side of the connecting block 609 is fixedly connected to the top of the horizontal plate of the L-shaped plate 404. The front and rear sides of the inner wall of the oil storage tank 1 can be sealed by the second arc-shaped ring 607.

[0033] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, rubber rings 6010 are fixedly connected to the sides of the first arc-shaped ring 601 and the second arc-shaped ring 607. The rubber rings 6010 abut against the side of the inner wall of the oil storage tank 1. The rubber rings 6010 can further increase the sealing effect of the first arc-shaped ring 601 and the second arc-shaped ring 607 on the oil storage tank 1.

[0034] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, the length inside the moving groove 301 and the length inside the long groove 608 are equal to the length inside the horizontal groove of the L-shaped groove 403. When the L-shaped plate 404 moves from one side to the other side of the inner wall of the L-shaped groove 403, the L-shaped plate 404 can simultaneously drive the connecting block 609 at its top and the push plate 302 at its bottom to move inside the moving groove 301 and the long groove 608 respectively without causing obstruction.

[0035] The method of use and advantages of this invention: The working process of this adaptive compensation double-seal floating roof during operation and use is as follows:

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown in the figure, the dual-axis motor 402 drives the threaded rod 405 on its side to rotate, causing the two L-shaped plates 404 to open to both sides. At the same time, the connecting block 609 and the push plate 302 on the side open to the left and right sides respectively. The connecting block 609 drives the two second arc-shaped rings 607 on its upper side to move to the left and right sides. At the same time, the push plate 302 abuts against the arc-shaped chamfer 602, causing the two first arc-shaped rings 601 to move to the front and rear sides respectively. The rubber rings 6010 on the sides of the first arc-shaped rings 601 and the second arc-shaped rings 607 squeeze and seal the side of the oil storage tank 1. When the rubber rings 6010 wear out, the dual-axis motor 402 runs again, causing the first arc-shaped rings 601 and the second arc-shaped rings 607 to move to a side that fits more closely to the inner wall of the oil storage tank 1. This ensures the sealing effect of the floating plate on the inner wall of the oil storage tank 1 and reduces the risk of oil and gas leakage from the inner wall of the oil storage tank 1.

[0037] After the floating roof is placed inside the oil storage tank 1, the two rotating shafts of the dual-shaft motor 402 drive the threaded rod 405 on its side to rotate. The L-shaped groove 403 limits the L-shaped plate 404, so that when the threaded rod 405 rotates, it drives the two L-shaped plates 404 to open outward at the same time. At this time, the L-shaped plate 404 moves to the side of the inner wall of the rectangular groove 2. The L-shaped plate 404 and the L-shaped groove 403 can limit the floating plate, preventing the pressure generated when the floating roof body 3 is placed into the inner wall of the oil storage tank 1 from causing the oil to slosh. This would prevent the floating roof body 3 from sloshing inside the oil storage tank 1 and thus the floating roof body 3 from getting stuck in the inner wall of the oil storage tank 1.

[0038] The dual-axis motor 402 drives the threaded rod 405 to rotate counterclockwise, causing the two L-shaped plates 404 to simultaneously close inward with the connecting blocks 609 and push plates 302 on their sides. At this time, the connecting blocks 609 drive the two second arc-shaped rings 607 to close inward to the side of the inner wall of the O-shaped groove 606. Simultaneously, the push plates 302 release the contact state with the arc-shaped chamfer 602 on the side of the first arc-shaped ring 601, causing the two first arc-shaped rings 601 and the two T-shaped blocks 604 to simultaneously close inward to the side of the inner wall of the annular groove 5 through the rebound force of the tension spring 6011. The two horizontal plates of the two L-shaped plates 404 move from the side of the inner wall of the rectangular groove 2 to the side of the inner wall of the L-shaped groove 403, thereby releasing the limiting state of the oil storage tank 1. The floating plate body 3 can then be quickly removed from the inside of the oil storage tank 1, and the rubber ring 6010 on its upper side can be quickly replaced.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adaptive compensation double-seal floating roof, comprising an oil storage tank (1), wherein rectangular grooves (2) are provided on both the left and right sides of the inner wall of the oil storage tank (1), characterized in that: The oil storage tank (1) is slidably provided with a floating plate body (3). The top of the floating plate body (3) is fixedly provided with a limiting mechanism (4) for limiting the floating plate body (3). The side of the floating plate body (3) is provided with an annular groove (5). The annular groove (5) is slidably connected with a sealing component (6) for sealing the oil storage tank (1).

2. The adaptive compensation double-sealed floating roof according to claim 1, characterized in that: The limiting mechanism (4) includes a connecting plate (401), which is fixed on the upper side of the floating plate body (3). A dual-axis motor (402) is fixedly connected to the middle of the top surface of the connecting plate (401). L-shaped grooves (403) are provided on the left and right sides of the top of the connecting plate (401). An L-shaped plate (404) is slidably connected inside the L-shaped groove (403). Threaded rods (405) are fixedly connected to the sides of the left and right rotating shafts of the dual-axis motor (402). The opposite ends of the two threaded rods (405) pass through the opposite sides of the two vertical plates of the two L-shaped plates (404). A limiting plate (406) is fixedly connected to one end of the threaded rod (405). The side of the horizontal plate of the L-shaped plate (404) slides with the side of the inner wall of the rectangular groove (2). A protective frame (407) is fixedly connected to the top of the connecting plate (401).

3. The adaptive compensation double-sealed floating roof according to claim 2, characterized in that: The sealing assembly (6) includes two first arc-shaped rings (601), which are slidably connected to the front and rear sides of the inner wall of the annular groove (5). An arc-shaped chamfer (602) is provided on the opposite side of the two first arc-shaped rings (601). Moving grooves (301) are provided on the left and right sides of the top of the floating plate body (3).

4. The adaptive compensation double-sealed floating roof according to claim 3, characterized in that: The bottom of the L-shaped plate (404) is fixedly connected to a push plate (302), the side of the push plate (302) is slidably connected to the inside of the moving groove (301), the shape of the push plate (302) is an isosceles trapezoid and the side of the push plate (302) abuts against the side of the arc-shaped chamfer (602).

5. The adaptive compensation double-sealed floating roof according to claim 3, characterized in that: The floating disk body (3) has T-shaped grooves (603) on both the front and rear sides. T-shaped blocks (604) are slidably arranged inside the T-shaped grooves (603). A tension spring (6011) is fixedly connected to the side of the horizontal block of the T-shaped block (604). One end of the tension spring (6011) is fixedly connected to the side of the horizontal block of the T-shaped block (604). The side of the vertical block of the T-shaped block (604) is fixedly connected to the side of the first arc-shaped ring (601).

6. The adaptive compensation double-sealed floating roof according to claim 2, characterized in that: An annular frame (605) is fixedly sleeved on the outer side of the connecting plate (401). An O-shaped groove (606) is provided in the middle of the side of the annular frame (605). A second arc-shaped ring (607) is slidably connected to both sides of the inner wall of the O-shaped groove (606). A long groove (608) is fixedly provided on both sides of the bottom surface of the annular frame (605). A connecting block (609) is slidably connected inside the long groove (608). The side of the connecting block (609) is fixedly connected to the top of the horizontal plate of the L-shaped plate (404).

7. The adaptive compensation double-sealed floating roof according to claim 5, characterized in that: Both the first arc-shaped ring (601) and the second arc-shaped ring (607) are fixedly connected to rubber rings (6010), and the rubber rings (6010) abut against the side of the inner wall of the oil storage tank (1).

8. The adaptive compensation double-sealed floating roof according to claim 4, characterized in that: The length inside the movable groove (301) and the length inside the long groove (608) are equal to the length inside the horizontal groove of the L-shaped groove (403).

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