Fireproof floating disc and oil storage device

Abstract

The utility model discloses a fireproof floating disc and an oil storage device.The fireproof floating disc is applied to a tank, stored liquid is contained in the tank, the average density of the fireproof floating disc is smaller than the density of the stored liquid, the fireproof floating disc comprises a buoyancy unit and a fireproof assembly, and the fireproof assembly is detachably connected with the buoyancy unit; the side, away from the buoyancy unit, of the fireproof assembly abuts against the inner wall of the tank body. The fireproof assembly is provided with a first-level fireproof unit and a second-level fireproof unit, and the first-level fireproof unit and the second-level fireproof unit are sequentially arranged in the tank body from bottom to top.

Description

Technical Field

[0001] The present application relates to the technical field of petrochemical storage equipment, and more specifically, to a fireproof floating roof and an oil storage device. Background Art

[0002] In the technical field of oil storage equipment such as petroleum and petrochemical, in order to reduce the volatilization of the liquid stored in the storage tank, a floating roof needs to be arranged on the liquid surface in the storage tank, so that the floating roof rises and falls with the rise and fall of the stored liquid, restricting the contact between the stored liquid and the atmosphere, reducing oil loss, and at the same time preventing the volatilization of oil and gas from polluting the air.

[0003] Currently, in order to improve the buoyancy and strength of the floating box, adhesive honeycomb cores, brazed honeycomb plates, reinforcing ribs or non-metallic materials can be filled inside the floating box to prevent a large amount of stored liquid from entering the floating box.

[0004] However, during the floating process of the floating roof in the storage tank, the metal material floating roof causes liquid to enter the floating box due to various reasons, resulting in uneven force on the floating roof and tilting, jamming or sinking of the floating roof. At the same time, the friction between the floating roof and the inner wall of the storage tank is likely to generate static electricity to ignite the stored liquid in the storage tank. If a non-metallic material floating roof is used, after the fire resistance test, although the structure of the floating roof is intact, the floating roof has a tendency to embrittle and cannot effectively limit the contact between the stored liquid and the atmosphere. If the non-metallic floating roof is removed, waste treatment is also a problem.

[0005] Therefore, a new technical solution is needed to solve the technical problems of poor fire resistance at the gaps and around the floating roof in the prior art. Summary of the Utility Model

[0006] An object of the present application is to provide a new technical solution for a fireproof floating roof.

[0007] According to the first aspect of the present application, there is provided a fireproof floating roof, which is applied to a tank body; a stored liquid is contained in the tank body, the average density of the fireproof floating roof is less than the density of the stored liquid, the fireproof floating roof includes a buoyancy unit and a fireproof component, and the fireproof component is detachably connected to the buoyancy unit; the fireproof component has a primary fireproof unit and a secondary fireproof unit, and the primary fireproof unit and the secondary fireproof unit are arranged in the tank body in sequence from bottom to top.

[0008] Optionally, the fireproof component includes a support part and a connection part, and opposite ends of the connection part are respectively detachably connected to the support part and the buoyancy unit; wherein, the support part includes a first elastic frame and a second elastic frame, adjacent ends of the first elastic frame and the second elastic frame are respectively detachably connected to the connection part, the other ends of the first elastic frame and the second elastic frame abut against the inner wall of the tank body, and a first space is formed between the first elastic frame, the inner wall of the tank body and the second elastic frame, and the primary fireproof unit is disposed in the first space.

[0009] Optionally, the primary fire prevention unit includes a fireproof coating sprayed in the first space, and the fireproof coating is sprayed on the first elastic frame and the second elastic frame.

[0010] Optionally, the connecting portion has a first end and a second end disposed opposite to each other, and the first end is detachably connected to the end portions of the first elastic frame and the second elastic frame adjacent thereto; wherein, a first abutting member is disposed at the first end, the first abutting member is disposed in the first space, and an end portion of the first abutting member away from the first end has a bent portion.

[0011] Optionally, a second abutting member is disposed at an end of the first elastic frame away from the secondary fire prevention unit, the second abutting member has an extending portion, the extending portion protrudes from the second elastic frame in the radial direction of the tank body, and the extending portion can elastically deform in the radial direction of the tank body.

[0012] Optionally, the secondary fire prevention unit includes a fireproof weir plate, and the fireproof weir plate is detachably disposed on the connecting portion; wherein, the distance between the fireproof weir plate and the inner wall of the tank body gradually increases from bottom to top.

[0013] Optionally, the buoyancy unit includes a plurality of floating boxes, adjacent floating boxes are detachably connected, and a connecting member is disposed between adjacent floating boxes; wherein, a fireproof expansion seal is disposed between adjacent floating boxes.

[0014] Optionally, the buoyancy unit further includes a support assembly and a support beam, a plurality of the floating boxes are disposed on the support beam, the support assembly is detachably connected to the support beam, the support assembly is connected to the support beam, and the floating boxes are disposed on the support beam.

[0015] According to a second aspect of the present application, there is provided an oil storage device, which includes the tank body and the fireproof floating roof as described above.

[0016] Optionally, the tank body is provided with a foam fire extinguishing system.

[0017] In the embodiment of the present application, by connecting the fire prevention component to the buoyancy unit, it is convenient for the fire prevention component to lift and lower in the tank body along with the buoyancy unit, so that the fire prevention component can maintain a certain distance from the liquid storage surface. By abutting one side of the fire prevention component against the inner wall of the tank body, the fire prevention component can maintain a certain distance from the tank body, effectively reducing the fire prevention range, so as to timely and effectively prevent and extinguish the open fire at the gap between the tank body and the buoyancy unit, effectively reducing the probability of accidents such as fire and explosion inside the tank body. Through the multiple protections of the primary fire prevention unit and the secondary fire prevention unit on the inside of the tank body, the safety inside the tank body is effectively improved.

[0018] Other features and advantages of the present application will become clear from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. Description of the Drawings

[0019] The drawings incorporated in and forming a part of the specification illustrate embodiments of the present application and, together with the description thereof, are used to explain the principles of the present application.

[0020] Figure 1 is a schematic structural diagram of a fireproof floating roof located inside a tank in an embodiment of the present application;

[0021] Figure 2 is a partial sectional structural diagram of a fireproof floating roof and a tank in an embodiment of the present application;

[0022] Figure 3 is Figure 2 a partially enlarged schematic diagram of the front view in ;

[0023] Figure 4 is a partial structural diagram of a fireproof weir plate and a connecting part in an embodiment of the present application;

[0024] Figure 5 is a structural diagram of the layout of floating boxes in a state with support beams in an embodiment of the present application;

[0025] Figure 6 is a structural diagram of the connection between a support beam and a floating box in an embodiment of the present application;

[0026] Figure 7 is a sectional structural diagram of a box body in an embodiment of the present application;

[0027] Figure 8 is a structural diagram of the layout of floating boxes in a state without support beams in an embodiment of the present application;

[0028] Figure 9 is a sectional structural diagram of the connection between adjacent floating boxes in a state without support beams in an embodiment of the present application.

[0029] Description of the Reference Numerals:

[0030] 1 - Buoyancy unit; 11 - Circular beam; 12 - Support beam; 13 - Floating box; 14 - Support assembly;

[0031] 2 - Fireproof assembly; 21 - Support part; 211 - Primary fireproof unit; 212 - First elastic frame; 213 - Second elastic frame; 214 - First space; 22 - Connecting part; 221 - Secondary fireproof unit; 2211 - Fireproof weir plate; 222 - First end; 223 - Second end; 224 - First abutting member; 2241 - Bent part; 225 - Second abutting member; 2251 - Extension part;

[0032] 3 - Tank body. Detailed implementation manners

[0033] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present application or its application or use.

[0035] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be regarded as part of the specification.

[0036] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0037] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] According to an embodiment of the present application, a fire - proof floating disc is provided. The fire - proof floating disc is applied to the tank body 3. The tank body 3 contains a stored liquid. The average density of the fire - proof floating disc is less than the density of the stored liquid. The fire - proof floating disc includes a buoyancy unit 1 and a fire - proof component 2. The fire - proof component 2 is detachably connected to the buoyancy unit 1. The side of the fire - proof component 2 away from the buoyancy unit 1 abuts against the inner wall of the tank body 3. The fire - proof component 2 includes a primary fire - proof unit 211 and a secondary fire - proof unit 221, and the primary fire - proof unit 211 and the secondary fire - proof unit 221 are arranged in the tank body 3 in sequence from bottom to top.

[0039] As Figures 1 to 3 shown, the tank body 3 stores a stored liquid. The fire - proof floating disc floats on the stored liquid. The buoyancy unit 1 of the fire - proof floating disc covers the surface of the stored liquid, which can effectively reduce the volatilization of the stored liquid.

[0040] The fire - proof floating disc includes a buoyancy unit 1 and a fire - proof component 2. The fire - proof component 2 is detachably connected to the buoyancy unit 1. The fire - proof component 2 and the buoyancy unit 1 are arranged in the tank body 3, and the fire - proof component 2 and the buoyancy unit 1 can rise and fall in the tank body 3 as the stored liquid rises and falls.

[0041] The buoyancy unit 1 rises and falls with the rise and fall of the liquid storage in the tank body 3. The buoyancy unit 1 is detachably connected to the fireproof component 2. When the buoyancy unit 1 rises and falls in the tank body 3, the fireproof component 2 rises and falls in the tank body 3 with the buoyancy unit 1. In other words, when the oil and gas concentration reaches the flammable range, the fireproof component 2 is easily ignited by static electricity in the space of the first-level fireproof unit 211. The fireproof component 2 maintains a certain distance from the liquid storage. When the oil and gas between the fireproof component 2 and the liquid storage is ignited, the fireproof material on the fireproof component 2 can be released and started in time to extinguish the fire. The fireproof component 2 and the buoyancy unit 1 move with the rise and fall of the liquid storage, so that a certain distance is maintained between the fireproof component 2 and the liquid storage, providing sufficient prevention and control space for the fireproof component 2, which can be started in time and effectively extinguish the fire.

[0042] There is a gap between the buoyancy unit 1 and the tank body 3. The oil and gas concentration in the gap is high due to the exposure of the oil. The inner end of the fire protection component 2 is detachably connected to the buoyancy unit 1, and the outer end of the protection component 2 is against the inner wall of the tank body 3, so that the fire protection unit 2 covers the gap. The fire protection unit 2 maintains a certain distance between the buoyancy unit 1 and the tank body 3, so that the fire protection unit 2 has enough space to react to the fire, so as to prevent the gap and effectively extinguish the fire.

[0043] The fire protection assembly 2 has a primary fire protection unit 211 and a secondary fire protection unit 221. The primary fire protection unit 211 can initially control and extinguish the open fire in the first space 214, and the secondary fire protection unit 221 is located above the primary fire protection unit 211, that is, located on the side of the primary fire protection unit 211 away from the liquid storage surface. The secondary fire protection unit 221 can be used to perform secondary defense and extinguish the open fire in the tank body 3 to prevent the fire in the tank body 3 from being too large and the primary fire protection unit 211 cannot effectively control it. By arranging the primary fire protection unit 211 and the secondary fire protection unit 221 in the tank body 3 for multiple defenses, the safety of the tank body 3 is effectively improved.

[0044] In the embodiment of the present application, the fireproof component 2 is connected to the buoyancy unit 1 so that the fireproof component 2 can rise and fall with the buoyancy unit 1 in the tank body 3, so that the fireproof component 2 can maintain a certain distance from the liquid surface of the storage liquid, and one side of the fireproof component 2 is against the inner wall of the tank body 3, so that the fireproof component 2 can maintain a certain distance from the tank body 3, thereby effectively narrowing the fire prevention range, so as to timely and effectively prevent and extinguish the open flame in the gap between the tank body 3 and the buoyancy unit 1, and effectively reduce the probability of accidents such as fire and explosion in the tank body 3. The inner wall of the tank body 3 is provided with multiple protections by the first-level fireproof unit 211 and the second-level fireproof unit 221, thereby effectively improving the safety inside the tank body 3.

[0045] In one example, the fireproof component 2 includes a support portion 21 and a connecting portion 22. Opposite ends of the connecting portion 22 are detachably connected to the support portion 21 and the buoyancy unit 1 respectively. Among them, the support portion 21 includes a first elastic frame 212 and a second elastic frame 213. Adjacent end portions of the first elastic frame 212 and the second elastic frame 213 are detachably connected to the connecting portion 22 respectively. The other ends of the first elastic frame 212 and the second elastic frame 213 abut against the inner wall of the tank body 3. A first space 214 is formed among the first elastic frame 212, the inner wall of the tank body 3 and the second elastic frame 213. The first-level fireproof unit 211 is disposed in the first space 214.

[0046] Due to technical problems in production, manufacturing, etc., the edge of the buoyancy unit 1 cannot be completely attached to the inner wall of the tank body 3, leaving a gap between the buoyancy unit 1 and the inner wall of the tank body 3. As a result, the liquid storage at this gap is exposed, and the oil and gas concentration at this gap is within the explosion range. If static electricity is generated by the friction between the buoyancy unit 1 and the inner wall of the tank body 3, it is extremely easy to ignite the oil and gas at this gap, resulting in an open fire at this gap.

[0047] In the embodiment of the present application, a support portion 21 is disposed between the buoyancy unit 1 and the inner wall of the tank body 3. By abutting the support portion 21 between the buoyancy unit 1 and the inner wall of the tank body 3, the support portion 21 is located in this gap and above the liquid storage. The support portion 21 has a first-level fireproof unit 211. The first-level fireproof unit is a fireproof coating disposed on the support portion 21. Through this fireproof coating, this space is prevented and effectively extinguished.

[0048] As Figures 1 to 3 shown, the first elastic frame 212 is a ring-shaped protective ring formed by splicing a plurality of elastic steel plates. The second elastic frame 213 is a non-metallic elastic plate. The first elastic frame 212 and the second elastic frame 213 are arranged along the axial direction of the tank body 3. That is, the first elastic frame 212 is located below the second elastic frame 213, and a second space is formed among the first elastic frame 212, the inner wall of the tank body 3 and the buoyancy unit 1. A polytetrafluoroethylene film (the polytetrafluoroethylene film is a glass fiber cloth coated with polytetrafluoroethylene emulsion) is provided in the second space to make the second space better sealed and effectively reduce the volatilization of oil and gas.

[0049] Adjacent end portions of the second elastic frame 213 and the first elastic frame 212 are detachably connected to the connecting portion 22. One end of the first elastic frame 212 away from the connecting portion 22 bends downward towards the tank body 3 and extends into the liquid storage. One end of the second elastic frame 213 away from the connecting portion 22 bends upward towards the tank body 3, so that a first space 214 is formed among the first elastic frame 212, the inner wall of the tank body 3 and the second elastic frame 213. A first-level fireproof unit is disposed in the first space 214. Through the fireproof coating of the first-level fireproof unit, the first space is prevented and effectively extinguished.

[0050] Of course, in the embodiments of the present application, the support portion 21 is not limited to the above structure, and those skilled in the art can set it according to actual needs. For example, the support portion 21 can also have a flared shape in the longitudinal section, and the elastic frame of the support portion can undergo elastic deformation, so that when the buoyancy unit 1 is offset in the tank body 3, by squeezing the support portion 21, the support portion 21 abuts between the buoyancy unit 1 and the inner wall of the tank body 3 to form a sealed space, effectively protecting the stored liquid.

[0051] The gap between the buoyancy unit 1 and the inner wall of the tank body 3 exposes part of the stored liquid to the inside of the tank body 3, and then the oil and gas volatilize at this gap, resulting in an increase in the oil and gas concentration at this gap. One end of the support portion 21 is connected to the buoyancy unit 1 through the connecting portion 22, and the other end abuts against the inner wall of the tank body 3, so that the first elastic frame 212 of the support portion 21 is located above the part of the exposed stored liquid. A sealing film is provided between the first elastic frame 212 and the liquid level of the stored liquid, and a second elastic frame 213 is provided above the first elastic frame 212 to double-seal this gap and effectively reduce the volatilization of oil and gas.

[0052] The fire prevention component 2 has a primary fire prevention unit 211. When the oil and gas concentration exposed to this gap is ignited by static electricity, the primary fire prevention unit 211 can initially prevent and extinguish the fire of this part of the oil and gas, and the connecting portion 22 can block the fire source and the buoyancy unit 1 during this period, preventing the buoyancy unit 1 from being burned in the initial stage of the oil and gas ignition. The primary fire prevention unit 211 controls the fire at this gap to prevent the fire from intensifying and causing a larger fire accident.

[0053] For example, the support portion 21 is a return spring. One end of the return spring is detachably connected to the connecting portion 22, and the other end abuts against the inner wall of the tank body 3. When the buoyancy unit 1 moves up and down with the stored liquid, the return spring moves up and down with the buoyancy unit 1. A fire prevention coating is sprayed on the return spring. Once the temperature reaches 140 °C or there is an open fire, the perfluoroketone fire extinguishing agent is ejected from the paint film to achieve active fire extinguishing and can extinguish the source of the fire in the first time.

[0054] Of course, in the embodiments of the present application, the support portion 21 is not limited to the above structure, and those skilled in the art can set it according to actual needs. For example, the support portion 21 can also be a shrapnel.

[0055] A secondary fire prevention unit 221 is provided at the connection end of the support part 21 and the connection part 22. Through the secondary fire prevention unit 221, secondary defense is carried out on the interior of the tank body 3. This can not only prevent the primary fire prevention unit 211 from being unable to effectively extinguish the fire due to excessive fire, but also prevent and control the fire in the area above the support part 21 and the buoyancy unit 1 in the tank body 3, and prevent the buoyancy unit 1 from being burned by the fire occurring above it. Through the double protection of the primary fire prevention unit 211 and the secondary fire prevention unit 221, the safety inside the tank body 3 is improved, and thus the fire resistance of the buoyancy unit 1 is enhanced.

[0056] In the embodiment of the present application, by providing the fire prevention component 2 on the buoyancy unit 1, the open fire inside the tank body 3 can be effectively prevented and extinguished, and accidents such as fires and explosions inside the tank body 3 can be effectively reduced. Through the primary fire prevention unit 211, preliminary prevention and control are carried out on the first space 214. When a fire occurs, the secondary fire prevention unit 221 can carry out secondary protection on the interior of the tank body 3. Through the double protection of the primary fire prevention unit 211 and the secondary fire prevention unit 221 on the inner wall of the tank body 3, the safety inside the tank body 3 is effectively improved.

[0057] In one example, the support part 21 includes a first elastic frame 212 and a second elastic frame 213. The adjacent end parts of the first elastic frame 212 and the second elastic frame 213 are respectively connected to the connection part 22. The ends of the first elastic frame 212 and the second elastic frame 213 far from the connection part 22 are bent along the axial direction of the tank body 3, and the bending directions of the first elastic frame 212 and the second elastic frame 213 are opposite; wherein, a first space 214 is formed between the first elastic frame 212, the inner wall of the tank body 3 and the second elastic frame 213, and a primary fire prevention unit 211 is provided in the first space 214.

[0058] As Figures 1 to 3 shown, both the first elastic frame 212 and the second elastic frame 213 are elastic plates. The first elastic plate and the second elastic plate are arranged along the axial direction of the tank body 3. The first elastic plate is below the second elastic plate, and one end of the first elastic plate is detachably connected to the connection part 22, and the other end is bent towards the bottom of the tank body 3, so that a second space is formed between the connection part 22 and the first elastic plate 212 above the liquid storage. A sealing film is provided in the second space, and the volatilization of oil and gas can be reduced through the sealing film.

[0059] The first elastic plate 212 includes a plurality of arc-shaped elastic plates. The plurality of arc-shaped elastic plates are arranged along the circumferential direction of the tank body, and the plurality of arc-shaped elastic plates enclose to form an annular sealing steel ring.

[0060] One end of the second elastic plate 213 close to the first elastic plate 212 is detachably connected to the connecting portion 22, and the other end is bent towards the top of the tank body 3, so that a first space 214 is formed between the side of the first elastic plate 212 facing away from the second space, the inner wall of the tank body 3 and the second elastic plate 213.

[0061] The second elastic plate 213 is a non-metallic annular member. One end of the non-metallic annular member is detachably connected to the connecting portion 22, and the other end is bent towards the top of the tank body 3, and the side of the non-metallic annular member away from the connecting portion abuts against the inner wall of the tank body 3.

[0062] The adjacent ends of the first elastic plate and the second elastic plate both extend along the radial direction of the tank body 3 and are connected to the connecting portion 22, so that the adjacent ends of the first elastic plate 212 and the second elastic plate 213 are bent, so as to form a first space 214 between the first elastic plate 212, the inner wall of the tank body 3 and the second elastic plate 213.

[0063] Of course, in the embodiment of the present application, the first elastic frame 212 and the second elastic frame 213 are not limited to the above structures, and those skilled in the art can set them according to actual needs. For example, the elastic frame is made of an elastic material with a flared cross-section, and the flared end abuts against the inner wall of the tank body 3, and a first space 214 is formed between the tank body 3 and the flared elastic frame.

[0064] Both the first elastic frame 212 and the second elastic frame 213 are elastic plates. The top of the first elastic plate 212 is bent towards the axis of the tank body 3 to form an arc surface, and the bottom end of the arc surface of the first elastic plate 212 to the bottom of the elastic plate is attached to the inner wall of the tank body 3. The bottom of the second elastic plate 213 is bent towards the axis of the tank body 3 to form an arc surface, and the top end of the arc surface of the second elastic plate 213 to the top of the elastic plate is attached to the inner wall of the tank body 3.

[0065] By connecting the bottom end of the first elastic frame 212 bent towards the axis and the top end of the second elastic frame 213 bent towards the axis, a second space is formed between the first elastic frame 212 and the connecting portion 22, that is, the lower part of the second space is communicated with the liquid storage, and the oil and gas concentration in the second space is relatively high. The gas concentration is too low or too high to cause an explosion. Therefore, the second space is communicated with the liquid storage, the oil and gas concentration is high, and the second space is safer than the first space 214.

[0066] A first fire prevention unit 211 is arranged in the first space 214 to prevent the gas concentration inside the first space 214 from reaching the flammable concentration range (the explosion concentration ranges of different combustible gases are also different), resulting in fires, explosions, etc. inside the first space 214, causing accidents such as fires inside the tank body 3.

[0067] A sealing film is arranged in the second space. The sealing film is arranged inside the first elastic frame 212 and outside the connecting part 22 away from the buoyancy unit 1, forming a second space communicating with the liquid storage liquid level, which can effectively reduce the volatilization of oil and gas.

[0068] Part of the oil and gas volatilizes through the gap to the upper part of the buoyancy unit 1 and into the first space 214. The primary fire prevention unit 211 in the first space 214 can prevent a fire from occurring in the first space 214 and conduct fire prevention and fire extinguishing.

[0069] In one example, the primary fire prevention unit 211 includes a fire prevention coating sprayed in the first space 214, and the fire prevention coating is sprayed on the elastic frame.

[0070] In the embodiment of the present application, the fire prevention material after mixing the perfluorinated hexanone fire extinguishing capsule and the paint is sprayed on the arc surfaces of the first elastic frame 212 and the second elastic frame 213, and the fire prevention coating in the first space 214 formed by the inner wall of the tank body 3, the first elastic frame 212 and the second elastic frame 213.

[0071] Perfluorinated hexanone is a new type of fire extinguishing material. Through the nano microcapsule compression technology, the solid perfluorinated hexanone fire extinguishing agent is mixed with the paint and sprayed on the arc surfaces of the first elastic frame 212 and the second elastic frame 213 in the first space 214. When the temperature in the first space 214 reaches 140°C or there is an open fire, the perfluorinated hexanone fire extinguishing agent is ejected from the paint film to achieve active fire extinguishing without any manual operation, and the source of the fire can be extinguished in the first time. Moreover, the tank body 3 is provided with a foam fire prevention system at the top. When the temperature inside the tank body 3 reaches 140°C or there is an open fire, the foam fire prevention system starts to operate and sprays the foam fire extinguishing agent to extinguish the fire.

[0072] In one example, the connecting part 22 has a first end 222 and a second end 223 arranged oppositely, and the first end 222 is detachably connected to the elastic frame; wherein, a first abutting member 224 is arranged at the first end 222, the first abutting member 224 is arranged in the first space 214, and the end of the first abutting member 224 away from the first end 222 has a bent part 2241.

[0073] As Figures 1 to 3 shown, the connecting part 22 is a hollow column, and the inner diameter dimension of the connecting part 22 is the same as the outer diameter dimension of the buoyancy unit 1. The outer wall of the buoyancy unit 1 is detachably connected to the bottom of the inner wall of the connecting part 22. The adjacent end parts of the first elastic frame 212 and the second elastic frame 213 are respectively detachably connected to the top of the connecting part 22.

[0074] The top of the connecting part 22 is the first end 222, and the bottom of the connecting part 22 is the second end 223. That is, the adjacent ends of the first elastic frame 212 and the second elastic frame 213 are connected to the first end 222 of the connecting part 22, and the buoyancy unit 1 is arranged at the second end 223 of the connecting part 22.

[0075] As Figures 1 to 3 shown, the first abutting member 224 is in a plate shape or a rod shape. One end of the first abutting member 224 is inserted between the first elastic frame 212 and the second elastic frame 213 and connected to the top of the connecting member. The end of the first abutting member 224 away from the connecting member has a bent portion 2241, and the bent portion 2241 can approach and move away from the inner wall of the tank body 3. For example, when the buoyancy unit 1 is displaced in the tank body 3 and the side of the buoyancy unit 1 close to the tank body 3 presses against the first elastic frame 212 and the second elastic frame 213, the bent portion 2241 of the first abutting member 224 gradually approaches the inner wall of the tank body 3. When the bent portion 2241 of the first abutting member 224 abuts against the inner wall of the tank body 3, the distance between the buoyancy unit 1 and the inner wall of the tank body 3 is limited by the first abutting member 224, preventing the buoyancy unit 1 from hitting the inner wall of the tank body 3 during movement and causing the first elastic frame 212 to undergo plastic deformation and fail.

[0076] Of course, in the embodiment of the present application, the first abutting member 224 is not limited to the above structure, and those skilled in the art can set it according to actual needs. For example, the first abutting member 224 is in an annular plate shape, the inner diameter dimension of the first abutting member 224 is the same as the outer diameter dimension of the connecting part 22, the first abutting member 224 is sleeved on the first end 222 of the connecting part 22, and a bent portion 2241 is arranged at the outer edge of the first abutting member 224. When the buoyancy unit 1 is displaced in the tank body 3, the connecting part 22 drives the first abutting member 224 to be displaced in the tank body 3, so that the bent portion 2241 of the first abutting member 224 abuts against the inner wall of the tank body 3 to limit the distance between the buoyancy unit 1 and the inner wall of the tank body 3, preventing the buoyancy unit 1 from hitting the inner wall of the tank body 3 during displacement and causing the first elastic frame 212 to undergo plastic deformation and fail.

[0077] In one example, a second abutting member 225 is arranged at the end of the elastic frame away from the secondary fire prevention unit 221. The second abutting member 225 has an extension portion 2251, and the extension portion 2251 protrudes from the elastic frame in the radial direction of the tank body 3, and the extension portion 2251 can elastically deform in the radial direction of the tank body 3.

[0078] As Figures 1 to 3 shown, the bottom of the second elastic plate is bent towards the axis direction of the tank body 3 to form an arc surface, and the top of the arc surface of the second elastic plate to the top of the elastic plate is attached to the inner wall of the tank body 3.

[0079] A second abutting member 225 is provided at a portion of the second elastic plate that abuts against the inner wall of the tank body 3. The bottom of the second abutting member 225 has a hook-shaped extension portion 2251 that extends out of the bottom of the second elastic plate and bends toward the buoyancy unit 1. When the buoyancy unit 1 is pressed against the inner wall of the tank body 3, the first abutting member 224 can be used for preliminary abutting to limit the distance between the buoyancy unit 1 and the inner wall of the tank body 3, and then the second abutting member 225 is used to secondarily limit the distance between the buoyancy unit 1 and the inner wall of the tank body 3, preventing the excessive squeezing force borne by the first abutting member 224 from causing damage to the first abutting member 224 and failing to effectively prevent the deviation between the buoyancy unit 1 and the inner wall of the tank body 3.

[0080] Of course, in the embodiment of the present application, the second abutting member 225 is not limited to the above structure, and those skilled in the art can set it according to actual needs. For example, the second abutting member 225 can be a rod-shaped structure, and its bottom has an extension portion 2251; the second abutting member 225 can also be a columnar structure, and its bottom has an extension portion 2251 that bends inward.

[0081] In one example, the secondary fire prevention unit 221 includes a fire prevention weir plate 2211, and the fire prevention weir plate 2211 is detachably arranged on the connecting portion 22; wherein, the distance between the fire prevention weir plate 2211 and the inner wall of the tank body 3 gradually increases from bottom to top.

[0082] As Figures 1 to 4 shown, the bottom end of the fire prevention weir plate 2211 is detachably connected to the top end of the connecting portion 22. The connecting portion 22 is in a plate-shaped or rod-shaped structure, and both the top and bottom of the connecting portion 22 have connecting ends arranged along the circumferential direction. As Figure 4 shown, the connecting portion 22 can be a C-shaped channel steel, and the bottom of the fire prevention weir plate 2211 is fixed to the top of the C-shaped channel steel by screws.

[0083] When the tank body 3 is refueled, the internal air pressure of the tank body 3 increases, causing the oil and gas to diffuse outside the floating disc, resulting in a relatively high concentration of oil and gas at the connection between the connecting portion 22 and the inner wall of the tank body 3, and increasing the concentration of oil and gas in the first space 214. When the concentration of oil and gas in the first space 214 reaches a certain range, there will be an explosion risk. When the tank body 3 discharges oil, the inner wall of the tank body 3 with sticky oil will be exposed to the air, and the wall-hanging oil liquid becomes a volatilization source of oil and gas, resulting in the concentration of oil and gas in the sealing ring reaching a certain range, and there is an explosive gas.

[0084] Therefore, fires in the oil storage tank 3 mostly occur between the connection part 22 and the inner wall of the tank 3, so the foam fire extinguishing system of the tank 3 is mostly installed around the top of the tank, and there is also a risk of electrostatic discharge between the first elastic frame 212 and the connection part 22. The support part forms a peripheral sealing ring at the gap between the tank and the buoyancy unit. When lightning strikes, due to the potential difference between the peripheral sealing ring and the inner wall of the tank 3, it is easy to cause discharge and ignition in the gap between the peripheral sealing ring and the tank wall, igniting the oil and liquid and causing a fire accident.

[0085] The fire weir plate 2211 is arranged at the top of the connecting part 22. When an open fire occurs in the tank body 3, the fire retardant coating can carry out preliminary prevention and fire extinguishing of the open fire between the peripheral sealing ring and the inner wall of the tank body 3. The foam fire extinguishing agent sprayed by the foam fire protection system arranged on the top wall of the tank body 3 can carry out secondary protection of the surrounding area of ​​the tank wall of the tank body 3 to prevent the fire from being too large to be extinguished by the fire retardant coating, resulting in accidents such as fire and explosion.

[0086] By changing the installation position of the fire weir plate 2211 on the buoyancy unit 1 to installing the fire weir plate 2211 on the connecting portion 22, the relative height of the fire weir plate 2211 and the buoyancy unit 1 on which the fire weir plate 2211 is placed remains unchanged, but the actual size of the fire weir plate 2211 is reduced, the weight is reduced, and the buoyancy of the floating disk 11 is increased. At the same time, the demand for fire foam is reduced, and there is no need to groove the buoyancy unit 1 to accommodate the installation of the fire weir plate 2211, so that the protective weir plate 2211 does not need to be fixed in position by the groove on the buoyancy unit 1, but can be directly installed on the connecting portion 22. The first elastic frame 212 and the second elastic frame 213 share bolts, which reduces the difficulty of installation, saves labor and time, reduces weight, and increases the buoyancy ratio of the buoyancy unit 1.

[0087] In one example, the buoyancy unit 1 further includes a plurality of pontoons 13 , wherein adjacent pontoons 13 are detachably connected, and protection grooves and connectors are provided between adjacent pontoons 13 ; wherein fireproof expansion seals are provided between adjacent pontoons 13 .

[0088] like Figures 5 to 7 As shown, the pontoon 13 is a rectangular parallelepiped structure. A protection groove is provided on the upper side wall of the pontoon 13, and the side wall protection grooves of adjacent pontoons 13 form a limiting fit so that adjacent pontoons 13 can be connected, and multiple pontoons 13 are connected to form a floating plate.

[0089] The connecting piece has a cross structure. Both the floating box 13 and the cross connecting piece are made of metal materials. A cross connecting piece is arranged between four adjacent floating boxes 13, that is, the cross connecting piece is arranged at the cross joint of the floating box 13 and the floating box 13. A cross connecting piece is also arranged at the joint between the floating box 13 and the support beam 12. Through the cross connecting piece, not only can the connection strength of the overall buoyancy unit 1 be improved, but also the static electricity of multiple floating boxes 13 of the buoyancy unit 1 can be conducted. By arranging static wires on the buoyancy unit 1, the static electricity generated between the floating boxes 13 can be led out of the tank body 3 through the static wires, preventing static electricity accumulation and causing accidents such as fire and explosion due to the ignition of the stored liquid inside the tank body 3.

[0090] The floating boxes 13 are insulated from each other due to the sealing tape. The adjacent floating boxes 13 are made to conduct static electricity through the protective groove. At the same time, the protective groove improves the sealing performance between the adjacent floating boxes 13 and enhances the external aesthetic appearance of the buoyancy unit 1.

[0091] The adjacent floating boxes 13 are connected by the cross connecting piece and the protective groove. There is an installation gap between the adjacent floating boxes 13. A fireproof expansion sealant is filled in this gap. When a fire occurs, the commonly used XPE foam material will be burned by the flame and form a gap. Oil and gas will be generated in this gap, intensifying the fire. However, when the fireproof sealant encounters fire, its volume expands several times. After the fireproof sealant expands, it seals the gap between the floating boxes 13, enabling the buoyancy unit to prevent oil and gas from contacting oxygen through the gap of the floating disc, and thus preventing the flame from burning, achieving the purpose of extinguishing the fire.

[0092] Each of the floating boxes 13 is filled with an airbag, a polymer material, a reinforcing rib or an empty floating box to enhance the buoyancy of the floating box 13 and improve the structural strength of the floating box 13.

[0093] In one example, the buoyancy unit 1 includes a ring beam 11 and a support beam 12. The ring beam 11 is detachably connected to the second end 223 of the connecting portion 22. The support beam 12 is connected to the ring beam 11. A plurality of the floating boxes 13 are arranged inside the ring beam 11, and a plurality of the floating boxes 13 are located on the support beam 12. As Figures 5 to 7 shown, the buoyancy unit 1 includes a ring beam 11 and a plurality of floating boxes 13. The floating box 13 includes a standard floating box 13 and a non-standard floating box 13. The standard floating box 13 has a cuboid structure, and one end of the non-standard floating box 13 is arc-shaped. A plurality of standard floating boxes 13 and a plurality of non-standard floating boxes 13 form a circular floating disc. The ring beam 11 is arranged on the outer circumference of the circular floating disc to fix the plurality of floating boxes 13 so that the plurality of floating boxes 13 form an integral body.

[0094] Of course, in the embodiment of the present application, the buoyancy unit 1 is not limited to the above structure, and those skilled in the art can set it according to actual needs. For example, the floating box 13 can also be a hollow column.

[0095] The connecting part 22 can be a ring beam 11. The inner wall of the ring beam 11 is connected to the floating box 13, and the outer wall of the ring beam 11 is connected to the supporting part 21.

[0096] At the top edge of the floating box 13, there is a vertical edge with through holes opened thereon. The floating box 13 is fixed to the connecting part 22 by screws passing through the through holes. The floating boxes 13 can also be connected through the through holes. Of course, in the embodiments of the present application, the floating tray and the connecting part 22 are not limited to the above connection methods, and those skilled in the art can set them according to actual needs.

[0097] The support beam 12 is arranged inside the ring beam 11. The connection between the ring beam 11 and the support beam 12 forms a receiving groove for supporting the floating tray, so that a plurality of floating boxes 13 can be limited between the ring beam 11 and the support beam 12, preventing the overall looseness of the floating tray caused by the detachment of one of the floating boxes 13, and further preventing the ring beam 11 from being unable to tightly hold a plurality of floating boxes 13, which affects the use effect of the buoyancy unit 1.

[0098] The floating box 13 is a hollow cuboid or a hollow cylinder and other structures. Setting the floating box 13 as a hollow structure can effectively reduce the weight of the floating box 13 and improve the buoyancy of the floating box 13.

[0099] The outer shell of the floating box 13 is made of materials such as aluminum alloy or stainless steel, and is formed by cutting, bending and welding a whole plate. In order to be fire-resistant, the inner side of the box body and the box cover can be sprayed with fire-proof coating, and the inside can be filled with polymer materials, and then the box body and the box cover are sealed and welded to form the floating box. The outer shell of the floating box 13 is the main load-bearing entity. The inner side of the floating box 13 is coated with heat-proof coating to improve the fire-resistant performance of the floating box 13. When the floating box 13 is filled with polymer materials to improve the bearing capacity of the box body, even when the floating box 13 has defects such as cracks and leaks, due to the fact that the polymer materials, air bags and other fillers in the floating box 13 occupy the space of the floating box 13, the oil liquid cannot enter the inside of the floating box 13 again, enabling the floating box 13 to float on the storage liquid for a long time.

[0100] When the floating box 13 is an empty box without filling any substances, the upper and lower surfaces of the box body are locally deformed through structures such as surface molding or stamping convex grooves, concave grooves, locally welded corrugated plates, locally welded trapezoids and other stiffening structures to improve the bending resistance of the upper and lower surfaces of the floating box 13 and enhance the structural strength of the box body.

[0101] The floating box 13 can be molded or stamped into a cuboid, and the box body is formed without welds, improving the surface quality of the floating box 13.

[0102] An air bag is filled inside the floating box 13, and air bags made of materials such as aluminum-plastic film air bags, PE plastic air bags, and rubber air bags can be selected. The air bag is filled with nitrogen, air, and carbon dioxide gas. Preferably, non-combustible nitrogen is filled in the air bag, which can play a certain flame-retardant effect.

[0103] A fireproof expansion seal is provided between adjacent floating boxes 13. This fireproof expansion gasket can resist fire and expand in volume. In case of a fire, the flame will burn the conventional XPE foam material, while the fireproof gasket expands several times in volume to seal the gap between the floating boxes 13, preventing the oil and gas from contacting oxygen and thus stopping the flame from burning, achieving the purpose of extinguishing the fire.

[0104] In one example, the buoyancy unit 1 further includes a support assembly 14 and a support beam 12. A plurality of the floating boxes 13 are arranged on the support beam 12. The support assembly 14 is detachably connected to the support beam 12. The support assembly 14 is connected to the support beam 12, and the floating boxes 13 are arranged on the support beam 12.

[0105] As Figures 1 to 3 shown, the support assembly 14 is a leg provided at the bottom of the support beam 12. The top of the support assembly 14 is connected to the bottom of the support beam 12. By providing the support assembly 14 at the bottom of the support beam 12, it can be prevented that when the liquid level in the tank body 3 drops to a certain value, the floating disc no longer continues to descend with the liquid level. The support assembly 14 can prevent the floating disc from descending too low, causing extrusion, damage, etc. to components such as the inlet pipe at the bottom of the tank body 3 or there being no maintenance space.

[0106] As Figure 5 shown, in the state where the buoyancy unit 1 includes the support beam 12, a plurality of floating boxes 13 are neatly arranged in rows and / or columns within the ring beam 11, and the floating boxes 13 are supported by the support beam 12. The bottom of the support beam 12 is connected to the support assembly 14, and a spacing is left between the buoyancy unit 1 and the bottom of the tank body 3 through the support assembly 14.

[0107] Of course, in the embodiment of the present application, the buoyancy unit 1 is not limited to the above structure, and those skilled in the art can set it according to actual needs. For example, as Figure 8 and Figure 9 shown, in the state where the buoyancy unit 1 does not include the support beam 13, a plurality of floating boxes 13 are staggered and arranged within the ring beam 11, and adjacent floating boxes 13 are connected by a groove to form a floating disc. The top of the support assembly 14 is connected to the bottom of the floating box 13.

[0108] The support beam 12 as Figure 6 shown, the top of the support beam 12 is connected to the floating box 13. The planar part of the support beam 12 is used to place the buoyancy unit 1. The two vertical edges at the bottom of the support beam 12 are connected to the legs of the support assembly 14. Through the support assembly 14, a certain spacing is provided between the floating box 13 and the bottom of the tank body 3, preventing the floating box 13 from being located too low in the tank body 3, resulting in too small a spacing between the floating box 13 and the bottom of the tank body 3 and damaging components such as the pipelines in the tank body 3.

[0109] According to another embodiment of the present application, an oil storage device is provided, which includes the tank body 3 and the fireproof floating roof as described above.

[0110] As Figures 1 to 3 shown, this fireproof floating roof is applicable to the tank body 3 for storing oil.

[0111] Of course, in the embodiments of the present application, the fireproof floating roof is not limited to the above scenarios, and those skilled in the art can set it according to actual needs. For example, this fireproof floating roof can be used in oil storage devices such as fuel dispensers in gas stations.

[0112] In one example, the tank body 3 is equipped with a foam fire extinguishing system.

[0113] When the tank body 3 is refueled, the internal air pressure of the tank body 3 increases, causing the oil and gas to diffuse outside the floating roof, resulting in an increase in the oil and gas concentration between the connecting part 22 and the inner wall of the tank body 3. When the gas concentration in the tank body 3 reaches a certain level, there is a risk of explosion. When the tank body 3 is discharging oil, the inner wall of the tank body 3 with sticky oil will be exposed to the air, and the wall-hanging oil liquid becomes a source of oil and gas volatilization, resulting in a relatively high oil and gas concentration inside the surrounding sealing ring, where there is a danger of explosive gas.

[0114] Therefore, most fires in the oil storage tank body 3 occur between the surrounding sealing ring and the inner wall of the tank body 3. Therefore, most of the foam fire extinguishing systems of the tank body 3 are installed around the ends of the storage tank. There is also a risk of arc spark discharge between the first elastic frame 212 and the connecting part 22. During lightning strikes, due to the large potential difference between the surrounding sealing ring and the inner wall of the tank body 3, it is easy to cause gap discharge and sparking between the surrounding sealing ring and the tank wall, and the ignited oil liquid is likely to cause a fire accident.

[0115] The open fire inside the tank body 3 is extinguished by the foam fire extinguishing system of the tank body 3, and the inner part of the tank body 3 is double-protected by the primary fire prevention unit 211 and the secondary fire prevention unit 221 of this fireproof floating roof, effectively improving the safety of the oil storage tank body 3.

[0116] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A fireproof floating roof, applied to a tank body (3), characterized in that, The tank body (3) contains a storage liquid, the average density of the fireproof floating roof is less than the density of the storage liquid, the fireproof floating roof includes a buoyancy unit (1) and a fireproof component (2), the fireproof component (2) is detachably connected to the buoyancy unit (1), and one side of the fireproof component (2) away from the buoyancy unit (1) abuts against the inner wall of the tank body (3); The fireproof component (2) has a primary fireproof unit (211) and a secondary fireproof unit (221), and the primary fireproof unit (211) and the secondary fireproof unit (221) are arranged in the tank body (3) in sequence from bottom to top.

2. The fireproof floating roof according to claim 1, wherein, The fireproof component (2) includes a support part (21) and a connecting part (22), and the opposite ends of the connecting part (22) are respectively detachably connected to the support part (21) and the buoyancy unit (1); wherein, The support part (21) includes a first elastic frame (212) and a second elastic frame (213), the adjacent end parts of the first elastic frame (212) and the second elastic frame (213) are respectively detachably connected to the connecting part (22), the other ends of the first elastic frame (212) and the second elastic frame (213) abut against the inner wall of the tank body (3), and a first space (214) is formed between the first elastic frame (212), the inner wall of the tank body (3) and the second elastic frame (213), and the primary fireproof unit (211) is arranged in the first space (214).

3. The fireproof floating roof according to claim 2, wherein, The primary fireproof unit (211) includes a fireproof coating sprayed in the first space (214), and the fireproof coating is sprayed on the first elastic frame (212) and the second elastic frame (213).

4. The fireproof floating roof according to claim 2, characterized in that, The connecting part (22) has a first end (222) and a second end (223) arranged oppositely, and the first end (222) is detachably connected to the adjacent end parts of the first elastic frame (212) and the second elastic frame (213); Wherein, a first abutting member (224) is arranged at the first end (222), the first abutting member (224) is arranged in the first space (214), and the end of the first abutting member (224) away from the first end (222) has a bent part (2241).

5. The fireproof floating roof according to claim 2, wherein, A second abutting member (225) is arranged at one end of the first elastic frame (212) away from the secondary fireproof unit (221), the second abutting member (225) has an extending part (2251), the extending part (2251) protrudes from the second elastic frame (213) along the radial direction of the tank body (3), and the extending part (2251) can elastically deform along the radial direction of the tank body (3).

6. The fireproof floating roof according to claim 2, wherein, The secondary fireproof unit (221) includes a fireproof weir plate (2211), and the fireproof weir plate (2211) is detachably arranged on the connecting part (22); Wherein, the distance between the fireproof weir plate (2211) and the inner wall of the tank body (3) gradually increases from bottom to top.

7. The fireproof floating roof according to claim 1, characterized in that, The buoyancy unit (1) includes a plurality of floating tanks (13), and adjacent floating tanks (13) are detachably connected. A protective groove and a connecting member are provided between adjacent floating tanks (13); Among them, a fireproof expansion seal is provided between adjacent floating tanks (13).

8. The fireproof floating roof according to claim 7, characterized in that, The buoyancy unit (1) further includes a support assembly (14) and a support beam (12). A plurality of floating tanks (13) are arranged on the support beam (12). The support assembly (14) is detachably connected to the support beam (12). The support assembly (14) is connected to the support beam (12), and the floating tank (13) is arranged on the support beam (12).

9. An oil storage device, comprising the tank body (3) and the fireproof floating roof according to any one of claims 1-8.

10. The oil storage device according to claim 9, characterized in that, The tank body (3) is equipped with a foam fire extinguishing system.

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