Floating roof and oil storage tank

Abstract

The present disclosure provides a floating roof and oil storage tank, belonging to the technical field of oil storage. The floating roof comprises a bottom plate, an intermediate support and a top plate, the intermediate support is located between the bottom plate and the top plate, and is welded with the bottom plate and the top plate respectively. The intermediate support plays a good supporting role on the top plate, and the intermediate support and the bottom plate can strengthen the overall strength of the floating roof, and are not easy to deform during use, so that the service life of the floating roof is longer.

Description

Technical Field

[0001] This disclosure relates to the field of oil storage technology, and in particular to a floating roof and an oil storage tank. Background Technology

[0002] The floating roof in the oil storage tank can rise or fall with the oil level, thereby eliminating the oil and gas space above the oil and reducing the contact between the oil surface and the flowing air. This significantly reduces the evaporation loss of the stored liquid, and it is therefore widely used in oil storage tanks for crude oil and refined oil products.

[0003] In related technologies, the floating roof is a metal plate that is in contact with the oil surface and floats as the oil in the storage tank rises and falls.

[0004] However, the floating roof support in related technologies is relatively weak and is prone to deformation during use, resulting in a short service life for the floating roof. Summary of the Invention

[0005] This disclosure provides a floating roof and an oil storage tank, which can solve the technical problems existing in related technologies. The technical solution of the floating roof and oil storage tank is as follows: In a first aspect, this disclosure provides a floating roof, which includes a bottom plate, intermediate supports, and a top plate; The intermediate support includes multiple circumferential supports and multiple radial supports. The multiple circumferential supports are coaxially arranged between the bottom plate and the top plate, and the radial supports are located between the bottom plate and the top plate. Among the multiple circumferential supports, some circumferential supports are ring plates, which are welded to the bottom plate and the top plate respectively. Some circumferential supports are single ring beam structures, which are composed of multiple upper single beams and multiple lower single beams. The multiple upper single beams and multiple lower single beams are of equal length and are distributed in a polygonal shape along the circumference. The positions of the upper single beams and the lower single beams are one-to-one and are arranged longitudinally. The upper single beams are welded to the top plate and the lower single beams are welded to the bottom plate. Some circumferential supports are double ring beam structures, which are composed of longitudinally arranged upper ring beams, lower ring beams and longitudinal supports. The longitudinal supports are welded to the upper ring beams and lower ring beams. The upper ring beams are welded to the top plate and the lower ring beams are welded to the bottom plate. Among the plurality of radial supports, some radial supports are single-diameter beams, some radial supports are double-diameter beam structures, and some radial supports are radial diaphragms. The double-diameter beam structure consists of an upper diameter beam, a lower diameter beam, and vertical ribs arranged longitudinally and connected. The vertical ribs are located between the upper diameter beam and the lower diameter beam, and the vertical ribs are welded to the upper diameter beam and the lower diameter beam respectively. When two adjacent circumferential supports include two double-ring beam structures arranged in sequence, the multiple radial supports between the two circumferential supports are all double-diameter beam structures arranged in the circumferential direction. In the double-diameter beam structure, the two ends of the upper diameter beam are respectively bolted to the upper ring beam of the two double-ring beam structures, and the upper diameter beam is welded to the top plate. The two ends of the lower diameter beam are respectively bolted to the lower ring beam of the two double-ring beam structures, and the lower diameter beam is welded to the bottom plate. When two adjacent circumferential supports include a double-ring beam structure and a ring plate arranged in sequence, the multiple radial supports between the two circumferential supports include single-diameter beams and double-diameter beam structures arranged alternately along the circumference. The two ends of the single-diameter beam are bolted to the upper ring beam and the ring plate of the double-ring beam structure, respectively, and the single-diameter beam is welded to the top plate. In the double-diameter beam structure, the two ends of the upper diameter beam are bolted to the upper ring beam and the ring plate, respectively, and the upper diameter beam is welded to the top plate. The two ends of the lower diameter beam are bolted to the lower ring beam and the ring plate of the double-ring beam structure, respectively, and the lower diameter beam is welded to the bottom plate. When two adjacent circumferential supports include a double-ring beam structure and a ring plate arranged in sequence, the multiple radial supports between the two circumferential supports include single-diameter beams and double-diameter beam structures arranged alternately along the circumference. The two ends of the single-diameter beam are bolted to the upper ring beam and the ring plate of the double-ring beam structure, respectively, and the single-diameter beam is welded to the top plate. In the double-diameter beam structure, the two ends of the upper diameter beam are bolted to the upper ring beam and the ring plate, respectively, and the upper diameter beam is welded to the top plate. The two ends of the lower diameter beam are bolted to the lower ring beam and the ring plate of the double-ring beam structure, respectively, and the lower diameter beam is welded to the bottom plate. When three adjacent circumferential supports include a ring plate, a single ring beam structure, and a double ring beam structure arranged sequentially, or when three adjacent circumferential supports include a double ring beam structure, a single ring beam structure, and a ring plate arranged sequentially, the multiple radial supports between the three circumferential supports include multiple double-diameter beam structures and multiple radial partitions. The multiple double-diameter beam structures are evenly distributed circumferentially, and the multiple radial partitions are evenly distributed circumferentially. In the double-diameter beam structure, the two ends of the upper diameter beam are respectively located at the ring plate and the upper ring beam of the double ring beam structure. The upper diameter beam is respectively connected to the upper single beam of the single ring beam structure, the ring plate, and the double ring beam structure. The upper ring beam is bolted together, the upper diameter beam is welded to the top plate, the two ends of the lower diameter beam are respectively located at the one ring plate and the lower ring beam of the double ring beam structure, and the lower diameter beam is bolted together to the one ring plate, the lower single beam of the single ring beam structure, and the lower ring beam of the double ring beam structure, and the lower diameter beam is welded to the bottom plate; the two ends of the radial partition are located at the one ring plate and the double ring beam structure, and the radial partition is bolted together to the one ring plate, the upper single beam of the single ring beam structure, the lower single beam of the single ring beam structure, the upper ring beam of the double ring beam structure, and the lower ring beam of the double ring beam structure, and the radial partition is welded to the bottom plate and the top plate; When five adjacent circumferential supports include a ring plate, three single-ring beam structures, and another ring plate arranged sequentially, the multiple radial supports between the five circumferential supports include multiple double-diameter beam structures and multiple radial partitions. The multiple double-diameter beam structures are evenly distributed circumferentially, and the multiple radial partitions are also evenly distributed circumferentially. In the double-diameter beam structure, the two ends of the upper diameter beam are respectively located at two ring plates in the five circumferential supports. The upper diameter beam is bolted to the two ring plates and the upper single beam in the three single-ring beam structures, and is welded to the top plate. The two ends of the lower diameter beam are respectively located at two ring plates. The lower diameter beam is bolted to the two ring plates and the lower single beam in the three single-ring beam structures, respectively. The two ends of the radial partition are respectively located at two ring plates. The ring plates are bolted to the radial partitions, the upper single beam, and the lower single beam, respectively. The radial partitions are welded to the bottom plate and the top plate.

[0006] In one possible implementation, the intermediate support further includes a central cylinder located between the bottom plate and the top plate and coaxial with the plurality of circumferential supports, and the central cylinder is welded to the top plate and the bottom plate respectively.

[0007] In one possible implementation, the first circumferential support from the inside to the outside among the plurality of circumferential supports is a double-ring beam structure; Multiple single-diameter beams are located between the central tube and the first circumferential support. Half of the single-diameter beams are connected at both ends to the upper ring beam of the double-ring beam structure of the central tube and the first circumferential support, respectively. The other half of the single-diameter beams are connected at both ends to the lower ring beam of the double-ring beam structure of the central tube and the first circumferential support, respectively. The positions of the half of the single-diameter beams and the other half of the single-diameter beams correspond one-to-one, and the corresponding two single-diameter beams are arranged longitudinally.

[0008] In one possible implementation, the plurality of circumferential supports, from the inside out, are arranged as follows: the first circumferential support is a double-ring beam structure, the second circumferential support is a double-ring beam structure, the third circumferential support is a ring plate, the fourth circumferential support is a single-ring beam structure, the fifth circumferential support is a double-ring beam structure, the sixth circumferential support is a single-ring beam structure, the seventh circumferential support is a ring plate, the eighth circumferential support is a single-ring beam structure, the ninth circumferential support is a double-ring beam structure, the tenth circumferential support is a single-ring beam structure, the eleventh circumferential support is a ring plate, the twelfth circumferential support is a single-ring beam structure, the thirteenth circumferential support is a single-ring beam structure, the fourteenth circumferential support is a single-ring beam structure, and the fifteenth circumferential support is a ring plate.

[0009] In one possible implementation, when two adjacent radial supports are a double-diameter beam structure and a radial diaphragm, the two ends of the upper single beam are bolted to the upper diameter beam of the double-diameter beam structure and the radial diaphragm, respectively, and the two ends of the lower single beam are bolted to the lower diameter beam of the double-diameter beam structure and the radial diaphragm, respectively. When both adjacent radial supports are double-diameter beam structures, the two ends of the upper single beam are bolted to the upper diameter beams of the two adjacent double-diameter beam structures, and the two ends of the lower single beam are bolted to the lower diameter beams of the two adjacent double-diameter beam structures.

[0010] In one possible implementation, the upper single beam, the lower single beam, the upper ring beam, the lower ring beam, the longitudinal support, the single diameter beam, the upper diameter beam, the lower diameter beam, and the vertical reinforcement are all angle steel.

[0011] In one possible implementation, the projection shape of the base plate in the horizontal plane is circular, and the projection shape of the top plate in the horizontal plane is also circular.

[0012] In one possible implementation, any longitudinal section of the base plate passing through the center point is V-shaped, and any longitudinal section of the top plate passing through the center point is W-shaped.

[0013] In one possible implementation, the upper and lower ring beams in the double-ring beam structure are parallel.

[0014] Secondly, this disclosure provides an oil storage tank, which includes a floating roof.

[0015] The technical solution provided in this disclosure includes at least the following beneficial effects: This disclosure provides a floating roof, which includes a top plate, a bottom plate, and intermediate supports. The top plate and the bottom plate are connected by the intermediate supports, which provide excellent support for the top plate. By setting the intermediate supports and the bottom plate, the overall strength of the floating roof can be enhanced, making it less prone to deformation during use and resulting in a longer service life.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings: Figure 1 This is a schematic diagram of a floating roof structure shown in an embodiment of this disclosure; Figure 2 This is a schematic diagram of a circumferential support structure shown in an embodiment of this disclosure; Figure 3 This is a partial structural schematic diagram of a floating roof according to an embodiment of the present disclosure; Figure 4 This is a partial structural schematic diagram of a floating roof according to an embodiment of the present disclosure; Figure 5 This is a partial structural schematic diagram of a floating roof according to an embodiment of the present disclosure; Figure 6 This is a partial structural schematic diagram of a floating roof according to an embodiment of the present disclosure; Figure 7 This is a schematic diagram of a double-diameter beam structure shown in an embodiment of this disclosure; Figure 8 This is a schematic diagram of the structure of a base plate shown in an embodiment of this disclosure; Figure 9 This is a schematic diagram of the structure of a top plate shown in an embodiment of this disclosure.

[0018] Legend: 1. Base plate; 2. Intermediate support; 21. Circumferential support; 211. Ring plate; 212. Single ring beam structure; 212a. Upper single beam; 212b. Lower single beam; 213. Double ring beam structure; 213a. Upper ring beam; 213b. Lower ring beam; 213c. Longitudinal support; 22. Radial support; 221. Single diameter beam; 222. Double diameter beam structure; 222a. Upper diameter beam; 222b. Lower diameter beam; 222c. Vertical reinforcement; 23. Central tube. 3. Top plate.

[0019] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.

[0021] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0022] This disclosure provides a floating roof, such as Figure 1 As shown, the floating roof includes a base plate 1, an intermediate support 2, and a top plate 3.

[0023] (a) Base plate 1 The base plate 1 is welded from multiple steel plates, with a thickness of 5-10mm. For example... Figure 1 and Figure 8As shown, the projection shape of the base plate 1 in the horizontal plane is circular, and any longitudinal section of the base plate 1 passing through the center point is V-shaped, that is, the base plate 1 as a whole is inverted conical. This increases the contact area between the base plate 1 and the oil in the oil storage tank, thereby reducing the pressure of the oil on the base plate 1, and thus making the base plate 1 less prone to deformation.

[0024] (ii) Top plate 3 The top plate 3 is welded from multiple steel plates, with a thickness of 5-8mm. For example... Figure 1 and Figure 9 As shown, the projection shape of the top plate 3 in the horizontal plane is circular, and any longitudinal section of the top plate 3 passing through the center point is W-shaped. That is, the shape of the top plate 3 near the center is the same as the side wall of a cone, and the shape away from the center is the same as the side wall of an inverted frustum. In this way, the recessed area of ​​the top plate 3 can collect rainwater and drain it, thereby preventing rainwater from entering the oil storage tank.

[0025] (III) Intermediate Support 2 like Figure 1 and Figure 2 ( Figure 2 As shown in the top view of multiple circumferential supports 21, the intermediate support 2 connects and fixes the base plate 1 and the top plate 3, supporting the base plate 1 and the top plate 3 to ensure the strength of the floating roof and prevent the base plate 1 and the top plate 3 from deforming. The intermediate support 2 has an axisymmetric shape, and its mass is uniformly distributed along the circumference and increases radially.

[0026] The intermediate support 2 includes multiple circumferential supports 21, multiple radial supports 22 and a central cylinder 23, which makes the force on the bottom plate 1 and the top plate 3 more uniform in the circumferential and radial directions, thus making them less prone to deformation.

[0027] (1) Circumferential support 21 like Figure 2 As shown, multiple circumferential supports 21 are coaxially arranged between the bottom plate 1 and the top plate 3. Among the multiple circumferential supports 21, some circumferential supports 21 are ring plates 211, some circumferential supports 21 are single ring beam structures 212, and some circumferential supports 21 are double ring beam structures 213.

[0028] Optionally, the multiple circumferential supports 21, from the inside out, consist of the following: the first and second circumferential supports 21 are double-ring beam structures 213; the third circumferential support 21 is a ring plate 211; the fourth circumferential support 21 is a single-ring beam structure 212; the fifth circumferential support 21 is a double-ring beam structure 213; the sixth circumferential support 21 is a single-ring beam structure 212; the seventh circumferential support 21 is a ring plate 211; and the eighth circumferential support 21 is a ring plate 211. 1 is a single-ring beam structure 212, the ninth circumferential support 21 is a double-ring beam structure 213, the tenth circumferential support 21 is a single-ring beam structure 212, the eleventh circumferential support 21 is a ring plate 211, the twelfth circumferential support 21 is a single-ring beam structure 212, the thirteenth circumferential support 21 is a single-ring beam structure 212, the fourteenth circumferential support 21 is a single-ring beam structure 212, and the fifteenth circumferential support 21 is a ring plate 211.

[0029] The area enclosed by the annular plate 211 of the third circumferential support 21 and the central cylinder 23 is the central compartment; the area enclosed by the annular plate 211 of the third circumferential support 21 and the annular plate 211 of the eleventh circumferential support 21 is the intermediate compartment; and the area enclosed by the annular plate 211 of the eleventh circumferential support 21 and the annular plate 211 of the fifteenth circumferential support 21 is the edge compartment.

[0030] Optionally, the number of double-ring beam structures 213 in the central compartment can be two or three rings. The circumferential support 21 in the intermediate compartment can be a single-ring beam structure 212-double-ring beam structure 213-single-ring beam structure 212-ring plate 211-single-ring beam structure 212-double-ring beam structure 213-single-ring beam structure 212, or a single-ring beam structure 212-double-ring beam structure 213-single-ring beam structure 212.

[0031] a. Ring plate 211 like Figure 2As shown, among the multiple circumferential supports 21, the third, seventh, eleventh, and fifteenth circumferential supports 21 from the inside out are all ring plates 211. The ring plates 211 are welded together from multiple steel plates, and the thickness of the steel plates can be 5~8mm. The ring plates 211 are welded to the bottom plate 1 and the top plate 3. The ring plate 211 of the fifteenth circumferential support 21 is the outermost circumferential support 21, and it is welded to the edge of the bottom plate 1 and the edge of the top plate 3, so that the entire floating roof forms a sealed structure, thereby reducing the evaporation of oil from the oil storage tank to the outside of the oil storage tank. The innermost sealed central compartment is formed by welding the ring plate 211 of the third circumferential support 21 (from the inside out) to the bottom plate 1 and the top plate 3. The middle compartment is formed by welding the ring plates 211 of the third and eleventh circumferential supports 21 (from the inside out) to the bottom plate 1 and the top plate 3. The edge compartment is formed by welding the ring plates 211 of the eleventh and fifteenth circumferential supports 21 (from the inside out) to the bottom plate 1 and the top plate 3. This three-layer sealed compartment enhances the airtightness of the floating roof, further reducing the evaporation of oil from the storage tank to the outside, and preventing rainwater or other liquids from entering the storage tank.

[0032] b. Single ring beam structure 212 like Figure 2 , Figure 4 and Figure 5 As shown, Figure 4 for Figure 2 A partial view of the area between the third and seventh circumferential supports 21 from the inside out. Figure 5 for Figure 2A partial view of the area between the twelfth and fifteenth circumferential supports 21 from the inside out. Among the multiple circumferential supports 21, the fourth, sixth, eighth, tenth, twelfth, thirteenth, and fourteenth circumferential supports 21 from the inside out are all single-ring beam structures 212. The single-ring beam structure 212 consists of multiple upper single beams 212a and multiple lower single beams 212b. The multiple upper single beams 212a and multiple lower single beams 212b are all of equal length. The multiple upper single beams 212a are distributed along the circumference to form a polygon, and the multiple lower single beams 212b are distributed along the circumference to form a polygon. The upper single beam 212a and the lower single beam 212b are positioned in a one-to-one correspondence and are arranged longitudinally. The upper single beam 212a is welded to the top plate 3, and the lower single beam 212b is welded to the bottom plate 1. Both the upper single beam 212a and the lower single beam 212b are right-angle steel. When two adjacent radial supports 22 are double-diameter beam structures 222 and radial partitions 223, the two ends of the upper single beam 212a are bolted to the upper diameter beam 222a and the radial partition 223, respectively, and the two ends of the lower single beam 212b are bolted to the lower diameter beam 222b and the radial partition 223, respectively. When two adjacent radial supports 22 are both double-diameter beam structures 222, the two ends of the upper single beam 212a are bolted to two adjacent upper diameter beams 222a, and the two ends of the lower single beam 212b are bolted to two adjacent lower diameter beams 222b. The presence of the single ring beam structure 212 makes the bottom plate 1 and top plate 3 smoother, and at the same time makes the two adjacent radial supports 22 more stable.

[0033] c. Double-ring beam structure 213 like Figure 3 , Figure 4 and Figure 6 As shown, Figure 3 for Figure 1 and Figure 2 A partial view of the area between the first and third circumferential supports 21 from the inside out. Figure 4 for Figure 2 A partial view of the area between the third and seventh circumferential supports 21 from the inside out. Figure 5 for Figure 2A partial view of the area between the eleventh and twelfth circumferential supports 21 from the inside out. Among the multiple circumferential supports 21, the first, second, fifth, and ninth circumferential supports 21 from the inside out are all double-ring beam structures 213. The double-ring beam structure 213 includes an upper ring beam 213a, a lower ring beam 213b, and a longitudinal support 213c, which is welded to the upper ring beam 213a and the lower ring beam 213b. The upper ring beam 213a and the lower ring beam 213b are formed by connecting multiple arc-shaped angle steel bolts. The upper ring beam 213a of the double ring beam structure 213 is welded to the top plate 3, and the lower ring beam 213b of the double ring beam structure 213 is welded to the bottom plate 1, so that the double ring beam structure 213 can provide good support for the bottom plate 1 and the top plate 3, thereby making the bottom plate 1 and the top plate 3 less prone to deformation.

[0034] In some instances, the upper ring beam 213a and the lower ring beam 213b in the double ring beam structure 213 are parallel.

[0035] The longitudinal supports 213c are angle steel, and multiple longitudinal supports 213c are evenly distributed circumferentially. The longitudinal supports 213c make the upper ring beam 213a in the double ring beam structure 213 more evenly stressed, thereby strengthening the support of the upper ring beam 213a for the top plate 3. At the same time, the longitudinal supports 213c also strengthen the support for the bottom plate 1, making the bottom plate 1 less prone to deformation.

[0036] Optionally, the longitudinal support 213c is perpendicular to the upper ring beam 213a and the lower ring beam 213b. The longitudinal support 213c can also be inclined and form a certain angle with the upper ring beam 213a and the lower ring beam 213b. The longitudinal support 213c in the same double ring beam structure 213 can be parallel or have different inclination angles.

[0037] (2) Radial support 22 like Figures 2-6 As shown, multiple radial supports 22 are located between the bottom plate 1 and the top plate 3. Among the multiple radial supports 22, some radial supports 22 are single-diameter beams 221, some radial supports 22 are double-diameter beam structures 222, and some radial supports 22 are radial diaphragms 223.

[0038] a. Single-diameter beam 221 The single-diameter beam 221 is made of angle steel and is welded to the top plate 3. Each single-diameter beam 221 is placed radially along the top plate 3, so that the single-diameter beam 221 provides good support for the top plate 3, thereby making the top plate 3 less prone to deformation. Since the bottom plate 1 floats on the surface of the oil, the supporting force on the bottom plate 1 comes from the oil. The top plate 3 is suspended above the bottom plate, and the supporting force on the bottom plate 1 comes entirely from the intermediate support 2. Therefore, multiple single-diameter beams 221 are welded to the top plate 3.

[0039] b. Double-diameter beam structure 222 like Figure 7 As shown, the double-diameter beam structure 222 includes an upper diameter beam 222a, a lower diameter beam 222b, and vertical reinforcement 222c. The upper diameter beam 222a, the lower diameter beam 222b, and the vertical reinforcement 222c are all angle steel.

[0040] In the double-diameter beam structure 222, the upper diameter beam 222a is welded to the top plate 3. Each upper diameter beam 222a is placed radially along the top plate 3, providing good radial support for the top plate 3 and thus preventing deformation. Similarly, in the double-diameter beam structure 222, the lower diameter beam 222b is welded to the bottom plate 1. Each lower diameter beam 222b is placed radially along the bottom plate 1, providing good radial support for the bottom plate 1 and preventing deformation.

[0041] Vertical reinforcement 222c is located between the upper diameter beam 222a and the lower diameter beam 222b, and is welded to both beams, thus providing good support for them. The vertical reinforcement 222c is placed at an angle between the upper diameter beam 222a and the lower diameter beam 222b, meaning it is not perpendicular to either beam. This allows for better material utilization while maintaining structural strength. Furthermore, the different inclination directions of adjacent vertical reinforcement 222c allow for greater clearance between them, facilitating maintenance.

[0042] Optionally, the inclination direction of each vertical reinforcement 222c between the upper diameter beam 222a and the lower diameter beam 222b can be the same, or the inclination direction of adjacent vertical reinforcements 222c in the same double diameter beam structure 222 can be opposite.

[0043] c. Radial partition 223 Radial partition 223 is made of steel plate, and the thickness of the steel plate can be 5~8mm. For example... Figure 5 As shown, some of the radial supports 22 are radial partitions 223. The radial partitions 223 are welded to the bottom plate 1 and the top plate 3. Each radial partition 223 is placed radially along the ring plate 211, and both ends of the radial partition 223 are welded to two ring plates 211 respectively. This allows the bottom plate 1, top plate 3, ring plate 211, and multiple radial partitions 223 to form multiple sealed cavities, effectively preventing rainwater from spreading or oil from evaporating in the floating roof due to localized cracks. When the bottom plate 1 and top plate 3 are damaged at different locations, and the damaged areas are not in the same sealed cavity, the floating roof as a whole still forms a sealed space with the oil in the storage tank, making it difficult for rainwater to enter the storage tank and for the oil in the storage tank to evaporate.

[0044] (3) Center tube 23 like Figure 2 As shown, the central cylinder 23 is located between the bottom plate 1 and the top plate 3 and is coaxial with multiple circumferential supports 21. The central cylinder 23 is connected to the top plate 3 and the bottom plate 1 respectively.

[0045] like Figure 3 and Figure 6 As shown, a radial support 22 can be provided between the central cylinder 23 and the first circumferential support 21, thereby strengthening the support near the axis of the bottom plate 1 and the top plate 3.

[0046] like Figure 6 As shown, the first circumferential support 21 outside the central cylinder 23 is a double-ring beam structure 213. Multiple single-diameter beams 221 are located between the central cylinder 23 and the first circumferential support 21. The two ends of half of the single-diameter beams 221 are connected to the upper ring beam 213a of the double-ring beam structure 213 of the central cylinder 23 and the first circumferential support 21, respectively. The two ends of the other half of the single-diameter beams 221 are connected to the lower ring beam 213b of the double-ring beam structure 213 of the central cylinder 23 and the first circumferential support 21, respectively. The positions of half of the single-diameter beams 221 and the other half of the single-diameter beams 221 correspond one-to-one, and the corresponding two single-diameter beams 221 are arranged longitudinally.

[0047] The connection relationships between the circumferential support 21, the radial support 22, and the base plate 1 and the top plate 3 are described below: like Figure 2 and Figure 3 As shown, when two adjacent circumferential supports 21 include two sequentially arranged double-ring beam structures 213, multiple radial supports 22 between the two circumferential supports 21 are arranged at equal intervals along the circumference, so that the bottom plate 1 and the top plate 3 are subjected to uniform force in the circumferential direction, thereby making the bottom plate 1 and the top plate 3 less prone to deformation. The multiple radial supports 22 include double-radial beam structures 222 arranged along the circumference.

[0048] The upper diameter beam 222a is bolted to the upper ring beam 213a of the two double ring beam structures 213 at both ends, and is welded to the top plate 3. The lower diameter beam 222b is bolted to the lower ring beam 213b of the two double ring beam structures 213 at both ends, and is welded to the bottom plate 1.

[0049] like Figure 2 and Figure 3As shown, when two adjacent circumferential supports 21 include a double-ring beam structure 213 and a ring plate 211 arranged sequentially, multiple radial supports 22 between the two circumferential supports 21 are arranged at equal intervals along the circumference, so that the bottom plate 1 and the top plate 3 are subjected to uniform force in the circumferential direction, thereby making the bottom plate 1 and the top plate 3 less prone to deformation. The multiple radial supports 22 include single-diameter beams 221 and double-diameter beam structures 222 arranged alternately along the circumference. The staggered arrangement of single-diameter beams 221 and double-diameter beam structures 222 can meet the strength requirements of the support for the bottom plate 1 and the top plate 3, and at the same time reduce the amount of steel used in the radial supports 22. If all the radial supports 22 are single-diameter beams 221, the support strength for the bottom plate 1 will be weak. If all the radial supports 22 are double-diameter beam structures 222, the amount of steel used will be large, resulting in a higher manufacturing cost of the floating roof.

[0050] In the double-ring beam structure 222, the two ends of the single-diameter beam 221 are bolted to the upper ring beam 213a and the ring plate 211 of the double-ring beam structure 213, respectively, and the single-diameter beam 221 is welded to the top plate 3. In the double-diameter beam structure 222, the two ends of the upper diameter beam 222a are bolted to the upper ring beam 213a and the ring plate 211, respectively, and the upper diameter beam 222a is welded to the top plate 3. The two ends of the lower diameter beam 222b are bolted to the lower ring beam 213b and the ring plate 211 of the double-ring beam structure 213, respectively, and the lower diameter beam 222b is welded to the bottom plate 1.

[0051] like Figure 2 and Figure 4 As shown, when the three adjacent circumferential supports 21 include a ring plate 211, a single ring beam structure 212 and a double ring beam structure 213 arranged in sequence, or when the three adjacent circumferential supports 21 include a double ring beam structure 213, a single ring beam structure 212 and a ring plate 211 arranged in sequence, the multiple radial supports 22 between the three circumferential supports 21 are arranged at equal intervals along the circumference, so that the bottom plate 1 and the top plate 3 are subjected to uniform force in the circumferential direction, thereby making the bottom plate 1 and the top plate 3 less prone to deformation.

[0052] Multiple radial supports 22 include a double-diameter beam structure 222 and a radial partition 223. The closer the bottom plate 1 and top plate 3 are to the edge, the greater the force. Therefore, in this case, some radial supports 22 adopt a double-diameter beam structure 222 instead of a single-diameter beam 221 to ensure the structural strength of the floating roof. The other part of the radial supports 22 adopts a radial partition 223 to form multiple sealed cavities between the two ring plates 211, and at the same time, it can further strengthen the support strength of the bottom plate 1 and the top plate 3.

[0053] Optionally, the number of double-diameter beam structures 222 is greater than the number of radial partitions 223. Nine double-diameter beam structures 222 can be set between every two radial partitions 223, or eight or ten double-diameter beam structures 222 can be placed.

[0054] In the double-diameter beam structure 222, the two ends of the upper diameter beam 222a are located at a ring plate 211 and the upper ring beam 213a of the double-ring beam structure 213, respectively. The upper diameter beam 222a is bolted to the upper single beam 212a of a single-ring beam structure 212, a ring plate 211, and the upper ring beam 213a of the double-ring beam structure 213, respectively. The upper diameter beam 222a is welded to the top plate 3. The two ends of the lower diameter beam 222b are located at a ring plate 211 and the lower ring beam 213b of the double-ring beam structure 213, respectively. The lower diameter beam 222b is bolted to a ring plate 211, the lower single beam 212b of a single-ring beam structure 212, and the lower ring beam 213b of the double-ring beam structure 213, respectively. The lower diameter beam 222b is welded to the bottom plate 1. The two ends of the radial partition 223 are located at a ring plate 211 and a double ring beam structure 213. The radial partition 223 is bolted to a ring plate 211, the upper ring beam 213a of the double ring beam structure 213, and the lower ring beam 213b of the double ring beam structure 213, respectively. The radial partition 223 is welded to the bottom plate 1 and the top plate 3, respectively. like Figure 2 and Figure 5 As shown, when the five adjacent circumferential supports 21 include a ring plate 211, three single ring beam structures 212 and another ring plate 211 arranged in sequence, the multiple radial supports 22 between the five circumferential supports 21 are arranged at equal intervals along the circumference, so that the bottom plate 1 and the top plate 3 are subjected to uniform force in the circumferential direction, thereby making the bottom plate 1 and the top plate 3 less prone to deformation.

[0055] Multiple radial supports 22 include multiple double-diameter beam structures 222 and multiple radial baffles 223, with the radial baffles 223 evenly distributed circumferentially. The stress is greater closer to the edges of the bottom plate 1 and top plate 3; therefore, in this case, using double-diameter beam structures 222 instead of single-diameter beams 221 in some radial supports 222 ensures the structural strength of the floating roof. Another portion of the radial supports 22 uses radial baffles 223 to form multiple sealed cavities between the two annular plates 211, further strengthening the support for the bottom plate 1 and top plate 3.

[0056] Optionally, the number of double-diameter beam structures 222 is greater than the number of radial partitions 223. Four double-diameter beam structures 222 can be set between every two radial partitions 223, or three or five double-diameter beam structures 222 can be placed.

[0057] In the double-diameter beam structure 222, the two ends of the upper diameter beam 222a are located at two ring plates 211 of the five circumferential supports 21. The upper diameter beam 222a is bolted to the two ring plates 211 and the upper single beam 212a of the three single ring beam structures 212. The upper diameter beam 222a is welded to the top plate 3. The two ends of the lower diameter beam 222b are located at two ring plates 211. The lower diameter beam 222b is bolted to the two ring plates 211 and the lower single beam 212b of the three single ring beam structures 212. The two ends of the radial partition 223 are located at two ring plates 211. The ring plates 211 are bolted to the radial partition 223, the upper single beam 212a and the lower single beam 212b. The radial partition 223 is welded to the bottom plate 1 and the top plate 3.

[0058] like Figure 2 and Figure 3 As shown, the central compartment includes a central tube 23 arranged in sequence, multiple double-ring beam structures 213 and a ring plate 211.

[0059] Optionally, the number of double-ring beam structures 213 varies with the diameter of the floating roof. The center compartment may include two double-ring beam structures 213 or three double-ring beam structures 213.

[0060] like Figure 2 and Figure 4 As shown, the intermediate compartment includes a single-ring beam structure 212, a double-ring beam structure 213, a single-ring beam structure 212, and a ring plate 211 arranged in sequence.

[0061] Optionally, the number of single-ring beam structures 212, double-ring beam structures 213, and ring plates 211 varies with the diameter of the floating roof. The intermediate compartment may also have a single-ring beam structure 212, a double-ring beam structure 213, a single-ring beam structure 212, a ring plate 211, a single-ring beam structure 212, a double-ring beam structure 213, a single-ring beam structure 212, and a ring plate 211 arranged in sequence.

[0062] like Figure 2 and Figure 5 As shown, the edge compartment includes three single-ring beam structures 212 arranged in sequence and a ring plate 211.

[0063] This disclosure provides an oil storage tank, which includes a tank body and a floating roof. The tank body is used to hold oil. The tank body has cylindrical sidewalls and a circular bottom, both of which are made of steel plate. The floating roof is located in the tank body and floats on the top surface of the oil. The outer diameter of the floating roof matches the inner diameter of the tank body sidewalls.

[0064] The oil in the storage tank provides buoyancy to the floating roof, causing it to float on the oil surface. As the oil level in the tank increases, the oil level rises, and the floating roof rises accordingly; conversely, as the oil level decreases, the oil level drops, and the floating roof falls, thus eliminating the space between the floating roof and the oil, reducing contact between the oil surface and flowing air, and significantly reducing oil evaporation losses.

[0065] The top plate 3 and the bottom plate 1 are connected by an intermediate support 2. The intermediate support 2 provides excellent support and reinforcement for the entire floating roof. The intermediate support 2 and the bottom plate 1 enhance the overall strength of the floating roof, making it less prone to deformation during use and extending its service life. Some of the circumferential supports 21 of the floating roof adopt single-ring beam structures 212 and double-ring beam structures 213, while others adopt ring plates 211. Some radial supports 22 adopt single-diameter beams 221 and double-diameter beam structures 222, and others adopt radial diaphragms 223. This design reduces steel consumption while ensuring the strength and sealing strength of the floating roof, thereby lowering the manufacturing cost of the oil storage tank. Furthermore, the circumferential supports are bolted together, and the circumferential and radial supports are bolted together, enabling rapid on-site assembly. This effectively improves on-site installation efficiency and quality, and significantly shortens the floating roof construction cycle.

[0066] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A floating roof, characterized in that, The floating roof includes a bottom plate (1), a middle support (2) and a top plate (3); The intermediate support (2) includes multiple circumferential supports (21) and multiple radial supports (22). The multiple circumferential supports (21) are arranged coaxially between the bottom plate (1) and the top plate (3), and the radial supports (22) are located between the bottom plate (1) and the top plate (3). Among the plurality of circumferential supports (21), some of the circumferential supports (21) are ring plates (211), which are welded to the bottom plate (1) and the top plate (3) respectively. Some of the circumferential supports (21) are single ring beam structures (212), which are composed of multiple upper single beams (212a) and multiple lower single beams (212b). The multiple upper single beams (212a) and multiple lower single beams (212b) are all of equal length. The multiple upper single beams (212a) are distributed in a polygonal shape along the circumferential direction, and the multiple lower single beams (212b) are distributed in a polygonal shape along the circumferential direction. The positions of the upper single beams (212a) and the lower single beams (212b) are one-to-one. Correspondingly, the upper single beam (212a) and the lower single beam (212b) are arranged longitudinally. The upper single beam (212a) is welded to the top plate (3), and the lower single beam (212b) is welded to the bottom plate (1). Part of the circumferential support (21) is a double ring beam structure (213). The double ring beam structure (213) is composed of the longitudinally arranged upper ring beam (213a), lower ring beam (213b) and longitudinal support (213c). The longitudinal support (213c) is welded to the upper ring beam (213a) and the lower ring beam (213b). The upper ring beam (213a) is welded to the top plate (3), and the lower ring beam (213b) is welded to the bottom plate (1). Among the plurality of radial supports (22), some radial supports (22) are single-diameter beams (221), some radial supports (22) are double-diameter beam structures (222), and some radial supports (22) are radial partitions (223). The double-diameter beam structure (222) is composed of an upper diameter beam (222a), a lower diameter beam (222b), and a vertical rib (222c) arranged longitudinally and connected. The vertical rib (222c) is located between the upper diameter beam (222a) and the lower diameter beam (222b), and the vertical rib (222c) is welded to the upper diameter beam (222a) and the lower diameter beam (222b) respectively. When two adjacent circumferential supports (21) include two double-ring beam structures (213) arranged in sequence, the multiple radial supports (22) between the two circumferential supports (21) are all double-diameter beam structures (222) arranged in the circumferential direction. In the double-diameter beam structure (222), the two ends of the upper diameter beam (222a) are bolted to the upper ring beam (213a) of the two double-ring beam structures (213) respectively, the upper diameter beam (222a) is welded to the top plate (3), the two ends of the lower diameter beam (222b) are bolted to the lower ring beam (213b) of the two double-ring beam structures (213) respectively, and the lower diameter beam (222b) is welded to the bottom plate (1). When two adjacent circumferential supports (21) include a double-ring beam structure (213) and a ring plate (211) arranged in sequence, the multiple radial supports (22) between the two circumferential supports (21) include single-diameter beams (221) and double-diameter beam structures (222) arranged alternately along the circumference. The two ends of the single-diameter beam (221) are bolted to the upper ring beam (213a) of the double-ring beam structure (213) and the ring plate (211), respectively. The upper diameter beam (222a) is welded to the top plate (3). In the double diameter beam structure (222), the two ends of the upper diameter beam (222a) are bolted to the upper ring beam (213a) and the ring plate (211) respectively. The upper diameter beam (222a) is welded to the top plate (3). The two ends of the lower diameter beam (222b) are bolted to the lower ring beam (213b) of the double ring beam structure (213) and the ring plate (211) respectively. The lower diameter beam (222b) is welded to the bottom plate (1). When three adjacent circumferential supports (21) include a ring plate (211), a single ring beam structure (212), and a double ring beam structure (213) arranged in sequence, or when three adjacent circumferential supports (21) include a double ring beam structure (213), a single ring beam structure (212), and a ring plate (211) arranged in sequence, the multiple radial supports (22) between the three circumferential supports (21) include multiple double-diameter beam structures (222) and multiple radial partitions (223), wherein the multiple double-diameter beam structures (222) The plurality of radial partitions (223) are evenly distributed circumferentially. In the double-diameter beam structure (222), the two ends of the upper diameter beam (222a) are respectively located at the upper ring beam (213a) of the one ring plate (211) and the double-ring beam structure (213). The upper diameter beam (222a) is bolted to the upper single beam (212a) of the one single ring beam structure (212), the one ring plate (211), and the upper ring beam (213a) of the double-ring beam structure (213). 222a) is welded to the top plate (3), and the two ends of the lower diameter beam (222b) are respectively located at the lower ring beam (213b) of the one ring plate (211) and the double ring beam structure (213). The lower diameter beam (222b) is bolted to the one ring plate (211), the lower single beam (212b) of the one single ring beam structure (212), and the lower ring beam (213b) of the double ring beam structure (213). The lower diameter beam (222b) is welded to the bottom plate (1). The two ends of the radial partition (223) are located at the... At the aforementioned ring plate (211) and the aforementioned double ring beam structure (213), the radial partition (223) is bolted to the aforementioned ring plate (211), the upper single beam (212a) of the aforementioned single ring beam structure (212), the lower single beam (212b) of the aforementioned single ring beam structure (212), the upper ring beam (213a) of the aforementioned double ring beam structure (213), and the lower ring beam (213b) of the aforementioned double ring beam structure (213), respectively. The radial partition (223) is welded to the aforementioned bottom plate (1) and the aforementioned top plate (3), respectively. When five adjacent circumferential supports (21) include a ring plate (211), three single ring beam structures (212), and another ring plate (211) arranged sequentially, the multiple radial supports (22) between the five circumferential supports (21) include multiple double-diameter beam structures (222) and multiple radial partitions (223). The multiple double-diameter beam structures (222) are evenly distributed along the circumference, and the multiple radial partitions (223) are evenly distributed along the circumference. In the double-diameter beam structure (222), the two ends of the upper diameter beam (222a) are respectively located at two ring plates (211) in the five circumferential supports (21). The upper diameter beam (222a) is respectively connected to the two ring plates (211), the three single ring beam structures (212), and another ring plate (211). The upper single beam (212a) in the ring beam structure (212) is bolted together. The upper diameter beam (222a) is welded to the top plate (3). The two ends of the lower diameter beam (222b) are located at the two ring plates (211) respectively. The lower diameter beam (222b) is bolted together with the two ring plates (211) and the lower single beam (212b) in the three single ring beam structures (212). The two ends of the radial partition (223) are located at the two ring plates (211) respectively. The ring plates (211) are bolted together with the radial partition (223), the upper single beam (212a) and the lower single beam (212b) respectively. The radial partition (223) is welded to the bottom plate (1) and the top plate (3) respectively.

2. The floating roof according to claim 1, characterized in that, The intermediate support (2) also includes a central cylinder (23), which is located between the bottom plate (1) and the top plate (3) and is coaxial with the plurality of circumferential supports (21). The central cylinder (23) is welded to the top plate (3) and the bottom plate (1) respectively.

3. The floating roof according to claim 2, characterized in that, The first circumferential support (21) from the inside to the outside of the plurality of circumferential supports (21) is a double ring beam structure (213). Multiple single-diameter beams (221) are located between the central cylinder (23) and the first circumferential support (21). Half of the single-diameter beams (221) are connected at both ends to the upper ring beam (213a) of the double ring beam structure (213) of the central cylinder (23) and the first circumferential support (21). The other half of the single-diameter beams (221) are connected at both ends to the lower ring beam (213b) of the double ring beam structure (213) of the central cylinder (23) and the first circumferential support (21). The positions of half of the single-diameter beams (221) and the other half of the single-diameter beams (221) correspond one-to-one, and the corresponding two single-diameter beams (221) are arranged longitudinally.

4. The floating roof according to claim 1, characterized in that, The plurality of circumferential supports (21) are arranged from the inside out as follows: the first circumferential support (21) is a double-ring beam structure (213), the second circumferential support (21) is a double-ring beam structure (213), the third circumferential support (21) is a ring plate (211), the fourth circumferential support (21) is a single-ring beam structure (212), the fifth circumferential support (21) is a double-ring beam structure (213), the sixth circumferential support (21) is a single-ring beam structure (212), the seventh circumferential support (21) is a ring plate (211), and the eighth circumferential support (21) is a single-ring beam structure (212). The support (21) is a single ring beam structure (212), the ninth circumferential support (21) is a double ring beam structure (213), the tenth circumferential support (21) is a single ring beam structure (212), the eleventh circumferential support (21) is a ring plate (211), the twelfth circumferential support (21) is a single ring beam structure (212), the thirteenth circumferential support (21) is a single ring beam structure (212), the fourteenth circumferential support (21) is a single ring beam structure (212), and the fifteenth circumferential support (21) is a ring plate (211).

5. The floating roof according to claim 1, characterized in that, When two adjacent radial supports (22) are a double-diameter beam structure (222) and a radial partition (223), the two ends of the upper single beam (212a) are bolted to the upper diameter beam (222a) of the double-diameter beam structure (222) and the radial partition (223) respectively, and the two ends of the lower single beam (212b) are bolted to the lower diameter beam (222b) of the double-diameter beam structure (222) and the radial partition (223) respectively; When both adjacent radial supports (22) are double diameter beam structures (222), the two ends of the upper single beam (212a) are bolted to the upper diameter beams (222a) of the two adjacent double diameter beam structures (222), and the two ends of the lower single beam (212b) are bolted to the lower diameter beams (222b) of the two adjacent double diameter beam structures (222).

6. The floating roof according to claim 1, characterized in that, The upper single beam (212a), the lower single beam (212b), the upper ring beam (213a), the lower ring beam (213b), the longitudinal support (213c), the single diameter beam (221), the upper diameter beam (222a), the lower diameter beam (222b), and the vertical reinforcement (222c) are all angle steel.

7. The floating roof according to claim 1, characterized in that, The projection shape of the base plate (1) in the horizontal plane is circular, and the projection shape of the top plate (3) in the horizontal plane is circular.

8. The floating roof according to claim 7, characterized in that, The bottom plate (1) has a V-shaped longitudinal section at any point through its center, and the top plate (3) has a W-shaped longitudinal section at any point through its center.

9. The floating roof according to claim 1, characterized in that, The upper ring beam (213a) and lower ring beam (213b) in the double ring beam structure (213) are parallel.

10. An oil storage tank, characterized in that, The oil storage tank includes a floating roof as described in any one of claims 1-9.

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