A foldable lightning arrester for floating roof oil tanks

Abstract

The utility model relates to a foldable lightning protection device for a floating roof oil tank, comprising a hanging bracket, a folding bracket, a grounding wire and a bracket; the hanging bracket is arranged on the inner side of the floating roof oil tank; the folding bracket comprises a plurality of connecting rods, a hinge structure is arranged between two adjacent connecting rods, one end of the folding bracket is connected to the hanging bracket, and the other end is connected to the bracket; the other end of the bracket is connected to the floating roof of the floating roof oil tank; the grounding wire is arranged on the connecting rod, and the two ends of the grounding wire extend out of the connecting rod and are respectively connected to the top of the floating roof oil tank and the floating roof. The utility model provides a foldable lightning protection device for a floating roof oil tank, by arranging the grounding wire on a folding bracket with a hinge structure, the grounding wire can be extended and retracted with the up and down floating of the floating roof, ensuring that the grounding wire is always in a relaxed state, avoiding the entanglement of the grounding wire, so as to ensure a good conductive effect.

Description

Technical Field

[0001] The utility model relates to the technical field of oil tank lightning protection, in particular to a foldable lightning protection device for a floating roof oil tank. Background Art

[0002] Floating roof tanks are composed of a floating roof floating on the surface of the medium and a vertical cylindrical tank wall. The floating roof rises and falls as the storage volume of the medium in the tank increases or decreases. Floating roof tanks are usually high, usually higher than other buildings in the factory area, and there is a great risk of lightning strikes in thunderstorms. The substances stored in the tanks are usually crude oil or other petroleum products. Crude oil and petroleum are both flammable and explosive organic substances. When a lightning strike occurs, if the current in the tank is not eliminated in time, it may cause huge disasters such as tank fires and explosions.

[0003] In the prior art, wires are often used to connect the floating roof to the tank body. When a lightning strike occurs, the charge on the floating roof flows into the ground through the wires and the tank body, thereby achieving the conductive function. However, the floating roof will float up and down with the change of oil volume. If the wires do not have a good fixed structure, the wires may be entangled or broken, affecting the conductive effect. Utility Model Content

[0004] The utility model aims to provide a foldable lightning protection device for a floating roof oil tank. By arranging the grounding wire on a folding bracket with a hinged structure, the grounding wire can be extended and retracted as the floating roof floats up and down, ensuring that the grounding wire is always in a relaxed state, avoiding the grounding wire from being entangled or broken, so as to ensure a good conductive effect.

[0005] A foldable lightning protection device for a floating roof oil tank, comprising a hanging bracket, a folding bracket, a grounding wire and a bracket;

[0006] The suspension bracket is arranged on the inner side of the floating roof oil tank;

[0007] The folding bracket comprises a plurality of connecting rods, and a hinge structure is provided between two adjacent connecting rods. One end of the folding bracket is connected to the suspension bracket, and the other end is connected to the bracket.

[0008] The other end of the bracket is connected to the floating roof of the floating roof oil tank;

[0009] The grounding wire is arranged on the connecting rod, and two ends of the grounding wire extend out of the connecting rod and are respectively connected to the top of the floating roof oil tank and the floating roof.

[0010] In the above technical solution, the folding bracket includes a plurality of connecting rods, the grounding wire is arranged on the connecting rods, a hinge structure is arranged between two adjacent connecting rods, one end of the folding bracket is connected to the suspension bracket, and the other end is connected to the bracket, and the bracket is connected to the floating roof of the floating roof oil tank. When the floating roof oil tank is transporting oil out, the floating roof goes down as the liquid level decreases. At this time, the bracket goes down as the floating roof goes down, thereby driving the plurality of connecting rods to unfold, so that the grounding wire stretches to adapt to the change in the distance between the floating roof and the filling roof; when the floating roof oil tank is collecting oil, the floating roof goes up as the liquid level rises. At this time, the bracket goes up as the floating roof goes up, thereby driving the plurality of connecting rods to be recovered section by section upward, and the grounding wire shrinks accordingly. By setting the folding bracket, the grounding wire is always in a relaxed state, avoiding the grounding wire from being entangled or pulled off, and ensuring the conductive effect. When a lightning strike occurs, the grounding wire sends the excess current on the floating roof to the top of the floating roof tank wall and introduces it into the ground, avoiding fire or explosion in the floating roof oil tank.

[0011] Furthermore, the connecting rod is provided with a channel with openings at both ends, and the grounding wire is passed through the channel.

[0012] In the above technical solution, the connecting rod is provided with a channel with openings at both ends, so that a hollow structure is formed inside the connecting rod, providing a smooth channel for the grounding wire. The grounding wire is passed through the channel of the connecting rod, so that the grounding wire can be easily connected to the connecting rod without entanglement and bending. At the same time, by passing the grounding wire through the channel, the grounding wire can be avoided from being exposed to the air, thereby preventing the grounding wire from being shortened in service life due to oxidation.

[0013] Furthermore, the hinged structure includes two fork-shaped arms, one end of the two fork-shaped arms is hinged, and the other end is respectively connected to the connecting rod.

[0014] In the above technical solution, the connecting rod extends and retracts with the rotation of the two fork arms. When the floating roof floats up and down with the change of liquid level, the connecting rod can adapt to the up and down floating of the floating roof under the action of the fork arms, so that the grounding wire can stretch freely to ensure the diversion effect.

[0015] Furthermore, one end of the bracket is hinged to the fork arm close to one side of the floating roof, and the other end is connected to the floating roof bolt.

[0016] In the above technical solution, when the floating roof floats down, the bracket moves down with the floating roof, and the folding bracket is unfolded under the action of the bracket. At this time, the connecting rod drives the grounding wire to gradually extend so that the grounding wire adapts to the position change of the floating roof to avoid the grounding wire being broken; when the floating roof floats up, the bracket moves upward under the action of the floating roof, and the folding bracket is retracted under the drive of the bracket. At this time, the connecting rod drives the grounding wire to be recovered section by section to avoid the grounding wire being entangled.

[0017] Furthermore, a guide wheel is provided between two adjacent fork arms, and the grounding wire abuts against the guide wheel.

[0018] In the above technical solution, the guide wheel is arranged between two adjacent fork arms, which can prevent the fork arms from pinching the grounding wire when rotating, and can guide the grounding wire so that the grounding wire can be smoothly extended or recovered. Specifically, when the grounding wire passes through the channel, it needs to pass through two hinged fork arms to enter the next channel. The rotation of the two adjacent fork arms allows the folding bracket to be extended or recovered. The arrangement of the guide wheel can prevent the fork arms from frequently rotating and causing the grounding wire to be pinched, further ensuring the conductive effect.

[0019] Furthermore, gap pads are respectively provided at both ends of the connecting rod.

[0020] In the above technical solution, gap pads are provided at both ends of the connecting rod, so that the two ends of the folding bracket remain flush after being folded and folded, thereby improving the overall aesthetics of the folding bracket and ensuring that the folding bracket is stably and tightly connected to the bracket after being folded and folded.

[0021] Furthermore, the grounding conductor is made of galvanized flat braided soft copper wire.

[0022] In the above technical solution, the braided soft copper wire is very soft, can withstand higher tension and pressure, and has a longer service life. At the same time, because the braided soft copper wire is woven from multiple strands of fine copper wires, its conductive performance is very excellent.

[0023] Furthermore, conductive grease is applied to the connection points at both ends of the grounding wire.

[0024] In the above technical solution, the conductive grease is a special silicone grease with good thermal and electrical conductivity as well as corrosion resistance. It can be used on the grounding wire to reduce thermal resistance and contact resistance while also preventing electrochemical corrosion, thereby ensuring the safety of the grounding wire and extending its service life.

[0025] Compared with the prior art, the beneficial effects of the utility model are as follows: by arranging a hanging bracket, a folding bracket, and a bracket, the hanging bracket is connected to the inner side of the tank wall of the floating roof oil tank, and the bracket is connected to the floating roof of the floating roof oil tank, so that the bracket can float up and down with the floating roof, and the two ends of the folding bracket are respectively connected to the hanging bracket and the bracket, so that the folding bracket can be telescoped between the hanging bracket and the bracket, wherein the folding bracket includes a plurality of connecting rods, and a hinge structure is provided between two adjacent connecting rods, and a grounding wire is provided on the connecting rod. When the floating roof floats up and down, the connecting rod is freely telescoped under the action of the bracket, so that the grounding wire adapts to the height of the floating roof and the top of the floating roof oil tank, thereby ensuring the conductive effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The utility model is a schematic diagram of the installation of a foldable lightning protection device for a floating roof oil tank according to an embodiment of the utility model.

[0027] Figure 2 It is a structural schematic diagram of an embodiment of the utility model.

[0028] Figure 3 for Figure 2 A is an enlarged schematic diagram.

[0029] Figure 4 Schematic diagram of the structure of the connecting rod of the embodiment of the utility model.

[0030] Figure 5 It is a partial cross-sectional schematic diagram of a connecting rod according to an embodiment of the utility model.

[0031] Description of Figure Numbers

[0032] 1. Floating roof oil tank; 101. Tank wall;

[0033] 2. Suspension bracket; 3. Grounding wire;

[0034] 4. Folding bracket; 401. Connecting rod; 402. Clamping bolt; 403. Fork arm; 404. Articulated shaft; 405. Clearance pad; 406. Channel;

[0035] 5. Horizontal displacement compensation rod; 6. Bracket; 7. Guide wheel; 8. Foam baffle; 9. Floating roof. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] Please refer to Figures 1 to 3 In a preferred embodiment, the foldable lightning protection device for a floating roof oil tank of the utility model comprises a suspension bracket 2, a foldable bracket 4, a grounding wire 3 and a bracket 6;

[0039] The suspension bracket 2 is arranged on the inner side of the floating roof oil tank 1;

[0040] The folding bracket 4 includes a plurality of connecting rods 401, and a hinge structure is provided between two adjacent connecting rods 401. One end of the folding bracket 4 is connected to the suspension bracket 2, and the other end is connected to the bracket 6.

[0041] The other end of the bracket is connected to the floating roof 9 of the floating roof oil tank 1;

[0042] The grounding wire 3 is arranged on the connecting rod 401 , and two ends of the grounding wire 3 extend out of the connecting rod 401 and are connected to the top of the floating roof oil tank 1 and the floating roof 9 respectively.

[0043] It can be seen from the above technical solution that the folding bracket 4 includes a plurality of connecting rods 401, the grounding wire 3 is arranged on the connecting rod 401, a hinge structure is arranged between two adjacent connecting rods 401, one end of the folding bracket 4 is connected to the suspension bracket 2, and the other end is connected to the bracket 6, and the other end of the bracket 6 is connected to the floating roof 9 of the floating roof oil tank 1. When the floating roof oil tank 1 is transporting oil out, the floating roof 9 moves downward as the liquid level decreases. At this time, the bracket 6 moves downward as the floating roof 9 moves downward, thereby driving the plurality of connecting rods 401 to unfold downward, so that the grounding wire 3 is stretched accordingly to adapt to the movement of the floating roof 9; when the floating roof oil tank 1 is collecting oil, the floating roof 9 moves upward as the liquid level rises. At this time, the bracket 6 moves upward as the floating roof 9 moves upward, thereby driving the plurality of connecting rods 401 to be recovered section by section upward, and the grounding wire 3 is contracted accordingly. By providing the folding bracket 4, the grounding wire 3 is always in a relaxed state, which prevents the grounding wire 3 from being entangled or broken, thereby ensuring the conductive effect. When a lightning strike occurs, the grounding wire 3 sends the excess current on the floating roof 9 to the top of the floating roof oil tank 1 and introduces it into the ground, thereby preventing the floating roof oil tank 1 from fire or explosion.

[0044] In this embodiment, one end of the suspension bracket 2 is connected to the top of the tank wall 101 of the floating roof oil tank 1 through fasteners such as bolts, and the other end is connected to a horizontal displacement compensation rod 5. The folding bracket 4 is connected to the suspension bracket 2 through the horizontal displacement compensation rod 5. Specifically, the floating roof 9 is moved up and down by a guide column. During use, there is a certain gap between the floating roof 9 and the guide column, so the floating roof 9 will also move horizontally when moving up and down. When the floating roof 9 moves horizontally, it will pull the suspension bracket 2. Since the suspension bracket 2 is fixedly connected to the tank wall 101 of the floating roof oil tank 1, when the floating roof 9 moves horizontally, the suspension bracket 2 cannot move horizontally with it. Under long-term use, the wear of the suspension bracket 2 will be accelerated, and the use effect of the entire lightning protection device will be affected. The setting of the horizontal displacement compensation rod 5 can prevent the floating roof 9 from directly pulling the suspension bracket 2 when it moves horizontally, thereby avoiding damage to the suspension bracket 2, thereby ensuring the stability of the entire lightning protection device and ensuring the lightning protection effect.

[0045] In some embodiments, the floating roof 9 includes a foam baffle 8, which is used to prevent the spread of fire when a fire occurs. Specifically, the foam baffle 8 is arranged between the tank wall 101 and the floating roof 9, and is against the floating roof 9, and floats up and down with the floating roof 9. During use, the utility model can connect the bracket 6 with the foam baffle 8, so that the folding bracket 4 can be freely extended and retracted with the movement of the floating roof 9.

[0046] Please refer to Figures 3 to 5 In this embodiment, in order for the connecting rod 401 to better drive the grounding wire 3 to move, a channel 406 with openings at both ends is provided in the connecting rod 401, and the grounding wire 3 is inserted into the channel 406. The connecting rod 401 is provided with a channel 406 with openings at both ends, so that the connecting rod 401 is formed into a hollow structure, providing a smooth channel 406 for the grounding wire 3. The grounding wire 3 is inserted into the channel of the connecting rod 401, so that the grounding wire 3 can be easily connected to the connecting rod 401 without entanglement and bending. At the same time, by inserting the grounding wire 3 into the channel 406, the grounding wire 3 can be prevented from being exposed to the air, thereby preventing the grounding wire 3 from being shortened due to oxidation. It should be noted that the grounding wire 3 and the connecting rod 401 are not limited to the above connection method. In other embodiments, the grounding wire 3 can also be arranged on the outside of the connecting rod 401 and directly connected to the connecting rod 401.

[0047] Please refer to Figure 2 and Figure 3 The hinge structure includes two fork arms 403, one end of the two fork arms 403 is hinged, and the other end is connected to the connecting rod 401. The connecting rod 401 is extended and retracted with the rotation of the two fork arms 403. When the floating roof 9 floats up and down with the change of the liquid level, the connecting rod 401 can adapt to the up and down floating of the floating roof 9 under the action of the fork arms 403, so that the grounding wire 3 can be freely extended to ensure the diversion effect. Specifically, the fork arms 403 are provided with through holes, and the hinge shaft 404 passes through the through holes to hinge two adjacent fork arms 403. The two adjacent fork arms 403 rotate through the hinge shaft 404. When the floating roof 9 floats up, the two adjacent fork arms 403 are close to each other, so that the overall height of the folding bracket 4 is reduced to adapt to the distance from the floating roof 9 to the top of the floating roof tank 1. When the floating roof 9 floats up, the two adjacent fork arms 403 are far away from each other, so that the overall height of the folding bracket 4 is increased.

[0048] Furthermore, one end of the bracket 6 is hinged to the fork arm 403 near the side of the floating roof 9, and the other end is bolted to the floating roof 9. When the floating roof 9 floats down, the bracket 6 moves down with the floating roof, and the folding bracket 4 is unfolded under the action of the bracket 6. At this time, the connecting rod 401 drives the grounding wire 3 to gradually extend, so that the grounding wire 3 adapts to the change in the distance between the floating roof 9 and the top, and avoids the grounding wire 3 from being broken; when the floating roof 9 floats up, the bracket 6 moves up under the action of the floating roof 9, and the folding bracket 4 is retracted under the drive of the bracket 6. At this time, the connecting rod 401 drives the grounding wire 3 to be recovered section by section to avoid the grounding wire 3 from being entangled.

[0049] Please refer to Figure 3 , a guide wheel 7 is provided between two adjacent fork arms 403, and the grounding wire 3 abuts against the guide wheel 7. The guide wheel 7 is provided between two adjacent fork arms 403. On the one hand, it can prevent the fork arms 403 from pinching the grounding wire 3 when rotating, and on the other hand, it can guide the grounding wire 3 so that the grounding wire 3 can be smoothly extended or recovered. Specifically, when the grounding wire 3 passes through the channel 406, it needs to pass through two hinged fork arms 403 to enter the next channel 406. The folding bracket 4 is extended or recovered under the rotation of the two adjacent fork arms 403. The provision of the guide wheel 7 can prevent the grounding wire 3 from being pinched due to the frequent rotation of the fork arms 403, and further ensure the conductive effect. During use, when the fork arms 403 rotate, the guide wheel 7 abuts against the grounding wire 3, preventing the grounding wire 3 from approaching the hinge shaft 404, thereby preventing the hinge shaft 404 from pinching the grounding wire 3.

[0050] Please refer to Figure 2 and Figure 3 , gap pads 405 are respectively provided at both ends of the connecting rod 401. By providing the gap pads 405 at both ends of the connecting rod 401, the folding bracket 4 can keep both ends flush after being folded and folded, thereby improving the overall aesthetics of the folding bracket 4 and ensuring that the folding bracket 4 and the bracket 6 are stably and tightly connected after being folded and folded.

[0051] In this embodiment, a clamping bolt 402 is provided on one side of the connecting rod 401 close to the gap pad 405. The clamping bolt 402 is used to fix the grounding wire 3, ensure that the grounding wire 3 can be stably connected to the connecting rod 401, and ensure the conductive effect. The clamping bolt 402 in this embodiment is a preferred structure, and its purpose is to achieve the fixing effect of the grounding wire 3 through two clamping bolts 402, and at the same time, the equipotential connection is achieved between each connecting rod 401. In other embodiments, the clamping bolt 402 may not be provided, as long as the effect of stable connection between the grounding wire 3 and the connecting rod 401 can be achieved.

[0052] At the same time, the grounding wire 3 is made of galvanized flat braided soft copper wire. The braided soft copper wire is very soft, can withstand high tension and pressure, and has a longer service life. At the same time, because the braided soft copper wire is woven from multiple strands of fine copper wires, its conductive performance is very excellent. In this embodiment, the grounding wire 3 is made of galvanized flat braided soft copper wire with a cross-sectional area of ​​50mm², which effectively improves the conductive effect.

[0053] In addition, conductive grease is applied to both ends of the grounding wire 3 of this embodiment. Conductive grease is a special silicone grease with good thermal and electrical conductivity and corrosion resistance. It can reduce thermal resistance and contact resistance when used on the grounding wire 3, and prevent electrochemical corrosion, thereby ensuring the safety of the grounding wire and extending its service life.

[0054] It should be noted that in order to ensure the diversion effect, the grounding wire 3 of this embodiment is a complete one. Of course, the grounding wire 3 of the utility model is not limited to a complete one. For example, multiple grounding wires 3 can also be connected to achieve the lightning diversion effect on the floating roof 9, but the contact resistance has a poor diversion effect. Generally speaking, the diversion effect of the whole grounding wire is better, and the actual number design can be adjusted according to the installation and needs.

[0055] In addition, the suspension bracket 2 and the tank wall 101, as well as the gap pad 405 and the connecting rod 401 of the utility model can be connected using fasteners such as bolts, but are not limited to the above method. Other methods can also be used to achieve connection, for example, riveting, riveting and welding mixed connection, welding connection, etc.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A foldable lightning arrester for a floating roof oil tank, characterized in that: Includes hanging bracket, folding bracket, grounding wire and bracket; The suspension bracket is arranged on the inner side of the floating roof oil tank; The folding bracket comprises a plurality of connecting rods, and a hinge structure is provided between two adjacent connecting rods. One end of the folding bracket is connected to the suspension bracket, and the other end is connected to the bracket. The other end of the bracket is connected to the floating roof of the floating roof oil tank; The grounding wire is arranged on the connecting rod, and two ends of the grounding wire extend out of the connecting rod and are respectively connected to the top of the floating roof oil tank and the floating roof.

2. The foldable lightning protection device for a floating roof oil tank according to claim 1, characterized in that: The connecting rod is provided with a channel with openings at both ends, and the grounding wire is passed through the channel.

3. The foldable lightning protection device for a floating roof oil tank according to claim 1, characterized in that: The hinged structure comprises two fork-shaped arms, one end of the two fork-shaped arms is hinged, and the other end is respectively connected to the connecting rod.

4. The foldable lightning protection device for a floating roof oil tank according to claim 3, characterized in that: One end of the bracket is hinged to a fork-shaped arm close to one side of the floating roof, and the other end is connected to a floating roof bolt.

5. The foldable lightning protection device for a floating roof oil tank according to claim 3, characterized in that: A guide wheel is provided between two adjacent fork arms, and the grounding wire abuts against the guide wheel.

6. The foldable lightning protection device for a floating roof oil tank according to claim 1, characterized in that: Both ends of the connecting rod are respectively provided with gap pads.

7. The foldable lightning protection device for a floating roof oil tank according to claim 1, characterized in that: The grounding conductor is made of galvanized flat braided soft copper wire.

8. The foldable lightning protection device for a floating roof oil tank according to claim 1, characterized in that: Conductive grease is applied to the connection points at both ends of the grounding wire.

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