reservoir

Abstract

The utility model discloses a kind of storage tanks, the scheme includes tank body, its top has opening;Multiple anchoring devices, along the circumferential interval of tank body is set;Anchoring device is set to the lower part of tank body outer wall, anchoring device extends to the foundation where supporting tank body downward and is fixedly connected with foundation;Tank cover, its cover is set to the top opening of tank body, tank cover is open downward arc top structure;Transition ring, circumferentially connect between the outer peripheral edge of tank cover and the opening peripheral edge of tank body, the curvature of transition ring along radial is less than the curvature of tank cover along radial, transition ring extends obliquely downward outward along radial and is arranged with the lateral wall of tank body between angle, when overpressure occurs in tank body, anchoring device can guarantee the connecting strength of tank body bottom and foundation, so that overpressure gas in tank can be directed upward to destroy the connecting structure of transition ring and tank cover and / or the connecting structure of transition ring and tank body, guarantee that overpressure gas in tank can be discharged from storage tank top, avoid the lateral wall or bottom of tank body breakage.

Description

Technical Field

[0001] This application relates to the field of storage tanks, and in particular to a type of storage tank. Background Technology

[0002] In projects such as air separation plants, liquefaction plants, and natural gas peak-shaving and storage stations, cryogenic liquids such as liquefied industrial gases, liquefied natural gas, and liquid ethylene are typically stored in dome-roofed tanks. In recent years, with increasing customer demands for tank safety, overpressure protection and directional pressure relief devices are generally required to ensure that in the event of severe overpressure during the storage of easily vaporized liquefied liquids, the gas inside the storage equipment can be released by damaging the tank structure. However, overpressure damage to the tank structure can easily lead to excessive leakage of the liquid medium inside the tank, posing a safety threat to surrounding personnel and facilities. Utility Model Content

[0003] To address the aforementioned problems, this application provides a storage tank.

[0004] According to one aspect of the embodiments of this application, a storage tank is disclosed, the storage tank including a tank body having an opening at the top;

[0005] Multiple anchoring devices are spaced apart along the circumference of the tank body; the anchoring devices are located on the lower part of the outer wall of the tank body, and extend downward to the foundation supporting the tank body and are fixedly connected to the foundation;

[0006] A can lid, which is placed over the top opening of the can body, and the can lid has an arc-shaped structure with the opening facing downwards;

[0007] A transition ring is circumferentially connected between the outer peripheral edge of the can lid and the periphery of the opening of the can body. The radial curvature of the transition ring is less than that of the can lid. The transition ring extends radially outward and downward at an angle to the side wall of the can body. The transition ring is used to prevent damage to the connection structure between the transition ring and the can lid and / or the connection structure between the transition ring and the can body after overpressure in the can body.

[0008] In one exemplary embodiment, the outer peripheral edge of the can lid overlaps the transition ring; and / or

[0009] The transition ring extends outward from the outer wall of the can body on the side furthest from the can lid; and / or

[0010] The thickness of the transition ring is greater than the thickness of the can lid; and / or

[0011] The transition ring extends in a straight line in the radial direction; the transition ring extends tangentially outward in the radial direction relative to the outer peripheral edge of the can lid.

[0012] In one exemplary embodiment, the transition ring includes a plurality of connecting plate units, which are sequentially spliced ​​together in the circumferential direction to form a ring;

[0013] The sides of adjacent connecting plate units are connected by butt welding;

[0014] The connecting plate unit is an arc plate with an arc along the circumferential direction, and the center of the arc plate faces inward.

[0015] In one exemplary embodiment, the can lid includes at least two annular plate structures arranged sequentially in a radial direction;

[0016] Any two adjacent ring plate structures are sequentially overlapped;

[0017] The transition ring is connected to the outer ring edge of the outermost ring plate structure.

[0018] In one exemplary embodiment, the ring plate structure includes a plurality of splicing plate units, which are sequentially spliced ​​together in the circumferential direction to form a ring;

[0019] The width of the splicing panel unit gradually increases outward along the circumferential direction;

[0020] The splicing panel unit is a spherical panel with arcs in both the radial and circumferential directions, with the center of the arc of the spherical panel facing inward.

[0021] In one exemplary embodiment, there is a seam between two adjacent splicing plate units on the same ring plate structure, and the seams of the splicing plate units between two adjacent ring plate structures are staggered from each other circumferentially; the seams of the splicing plate units between two adjacent ring plate structures are spaced at least 300 mm apart circumferentially; and / or

[0022] Multiple splicing panel units are sequentially overlapped circumferentially; and / or

[0023] The width of the splicing panel unit in the radial direction is 1m to 3m.

[0024] In one exemplary embodiment, between two adjacent ring plate structures, the ring plate structure located on the inner perimeter is designated as the first ring plate structure, and the ring plate structure located on the outer perimeter is designated as the second ring plate structure. The number of splicing plate units in the second ring plate structure is greater than the number of splicing plate units in the first ring plate structure.

[0025] The ratio of the number of splicing plate units in the second ring plate structure to the number of splicing plate units in the first ring plate structure is 2:1.

[0026] In one exemplary embodiment, a mounting plate is provided at the center top of the can lid, the outer periphery of which overlaps the inner ring edge of the annular plate structure located within the inner periphery; and / or

[0027] The radius of curvature of the can lid is 0.8 to 1.2 times the diameter of the can body.

[0028] In one exemplary embodiment, the foundation includes an insulation layer located at the bottom of the tank body and a base layer disposed at the bottom of the insulation layer; the bottom of the anchoring device passes downward through the insulation layer and is embedded in the base layer;

[0029] The anchoring device includes a tie plate, a support base, a fixing plate, and a reinforcing plate;

[0030] The top side of the pull plate is welded to the bottom of the outer wall of the tank body, and the bottom side of the pull plate passes downward through the insulation layer and extends vertically into the base layer;

[0031] The support base is disposed on the insulation layer, the support base extends vertically and protrudes upward from the insulation layer, the support base is sleeved on the pull plate, and the inner wall of the support base and the pull plate are filled with insulation material.

[0032] The fixing plate is disposed on the bottom side of the pull plate, and the fixing plate extends horizontally and protrudes from the opposite two sides of the pull plate.

[0033] The reinforcing plate is disposed on the opposite two sides of the pull plate, and the reinforcing plate is located within the base layer and perpendicular to the fixing plate.

[0034] In one exemplary embodiment, the pull plate includes a bonding section, an extension section, and a pre-embedded section connected sequentially from top to bottom;

[0035] One side of the fitting section is welded to the outer wall of the tank body; the top side of the extension section is connected to the bottom side of the fitting section, and the bottom side of the extension section extends inclinedly away from the tank body; the top side of the embedded section is connected to the bottom side of the extension section, the embedded section extends vertically, the embedded section passes through the support base and is embedded in the foundation, the fixing plate is disposed on the bottom side of the embedded section, and the reinforcing plate is disposed on the portion of the embedded section located within the foundation.

[0036] The technical solutions provided by the embodiments of this application have at least the following beneficial effects:

[0037] The storage tank disclosed in this application uses multiple anchoring devices to position the outer peripheral wall of the tank body at the foundation supporting the tank body. Under external load conditions, the anchoring structure can keep the storage tank stably connected to the foundation, reducing the possibility of damage to the bottom of the storage tank. Meanwhile, the tank cover has a downward-facing arc-shaped design. The tank cover can be fixed to the periphery of the opening of the tank body via a transition ring connected to the outer edge of the tank cover. The radial curvature of the tank cover is greater than the radial curvature of the transition ring located on the outer edge of the tank cover. The connection between the two materials with different curvatures makes the impact resistance at the junction of the transition ring and the tank cover relatively weak. Furthermore, the transition ring and the tank body are set at an angle, which further reduces the impact resistance of both the transition ring and the tank body. When overpressure occurs inside the storage tank, the anchoring device ensures the connection strength between the bottom of the tank and the foundation, allowing the overpressured gas inside the tank to directionally break the connection structure between the transition ring and the tank cover and / or the connection structure between the transition ring and the tank body. This ensures that the overpressured gas can be released from the top of the storage tank without damaging the tank structure, preventing the side walls or bottom of the tank from rupturing. This reduces the amount of liquid media leakage, minimizes user losses, and reduces resource waste. For volatile cryogenic media, safety is easier to control, and pollution of soil and water sources is avoided.

[0038] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the specification, serve to explain the principles of this application.

[0040] Figure 1 A schematic diagram of the structure of a storage tank provided in one embodiment of this application is shown.

[0041] Figure 2 A top view schematically illustrating a can lid and transition ring provided in one embodiment of this application is shown.

[0042] Figure 3 A cross-sectional view of a can lid and transition ring provided in one embodiment of this application is schematically shown.

[0043] Figure 4 A schematic diagram of the structure of an anchoring device provided in one embodiment of this application is shown.

[0044] Figure 5 A schematic side view of an anchoring device provided in one embodiment of this application is shown.

[0045] The annotations in the attached figures are explained as follows:

[0046] 1-Tank body; 11-Opening; 2-Tank lid; 21-Ring plate structure; 211-Splicing plate unit; 212-First ring plate structure; 213-Second ring plate structure; 22-Mounting plate; 3-Transition ring; 31-Connecting plate unit; 41-Insulation layer; 42-Ground layer; 5-Anchoring device; 51-Pull plate; 511-Fitting section; 512-Extension section; 513-Embedded section; 52-Support seat; 521-Cylinder body; 522-Top sealing plate; 523-Bottom sealing plate; 524-Insulation material; 53-Fixing plate; 54-Reinforcing plate; 55-Limiting plate; 56-Positioning plate; 57-Docking pad. Detailed Implementation

[0047] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this application will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art.

[0048] In the description of this utility model, all the connection relationships mentioned do not refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0049] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, and connecting should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0050] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0052] Figure 1 A structural diagram of the storage tank is shown.

[0053] This application provides a storage tank for storing liquid media. The storage tank includes a tank body 1, a tank cover 2, a transition ring 3, and multiple anchoring devices 5. The tank body 1 has an opening 11 at its top. The multiple anchoring devices 5 are spaced apart circumferentially along the tank body 1. The anchoring devices 5 are located on the lower part of the outer wall of the tank body 1, extending downward to the foundation supporting the tank body 1 and being fixedly connected to the foundation. The tank cover 2 is placed over the top opening 11 of the tank body 1, and the tank cover 2 has an arc-shaped structure with the opening 11 facing downward. The transition ring 3 connects the tank cover 2 and the tank body 1, that is, the transition ring 3 is circumferentially connected between the outer peripheral edge of the tank cover 2 and the periphery of the opening 11 of the tank body 1.

[0054] The radial curvature of the transition ring 3 is less than that of the lid 2. The lid 2 has an arc-shaped opening 11 facing downwards. The transition ring 3 connects to the outer periphery of the lid 2 and extends radially outwards at an angle downwards, thus extending the outer periphery of the lid 2 outwards. The lid 2 can be connected and fixed to the periphery of the opening 11 of the tank body 1 through the extension of the transition ring 3. The radial curvature of the lid 2 is greater than that of the transition ring 3 located on the periphery of the lid 2. The connection between the two materials with different curvatures makes the impact resistance at the connection between the transition ring 3 and the lid 2 relatively weak. In fact, the radial direction refers to the direction that extends radially outwards from the top center of the lid 2, and the circumferential direction refers to the circumferential direction centered on the axis of the lid 2. The radial and circumferential directions described in this article are perpendicular to each other in space. The "inner" mentioned in this article refers to the direction towards the inside of the tank body 1, and the "outer" refers to the direction outside the storage tank.

[0055] The transition ring 3 extends radially outward and downward at an angle to the side wall of the tank body 1. This angled arrangement between the transition ring 3 and the tank body 1 reduces their impact resistance. The transition ring 3 is used to prevent damage to the connection structure between the transition ring 3 and the tank cover 2 and / or the tank body 1 after overpressure within the tank body 1.

[0056] The present application uses multiple anchoring devices 5 to position the outer peripheral wall of the tank body 1 at the foundation used to support the tank body 1. Under external load conditions, the anchoring structure can keep the storage tank stably connected to the foundation and reduce the possibility of damage to the bottom of the storage tank.

[0057] When overpressure occurs inside the storage tank, i.e., inside the tank body 1, the anchoring device 5 can ensure the connection strength between the bottom of the tank body 1 and the foundation. At the same time, because the impact resistance of the transition ring 3 at the connection structure between the tank cover 2 and the tank body 1 is relatively weak, the overpressure gas inside the tank can directionally break the connection structure between the transition ring 3 and the tank cover 2 and / or the connection structure between the transition ring 3 and the tank body 1, ensuring that the overpressure gas inside the tank can be released from the top of the storage tank without damaging the structure of the tank body 1, avoiding the side wall or bottom of the tank body 1 from cracking, reducing the amount of liquid medium leakage, reducing user losses, reducing resource waste, and making it easier to control the safety of volatile cryogenic media, avoiding pollution of soil and water sources.

[0058] It should be noted that in the event of overpressure inside the storage tank, the overpressure gas inside the tank can damage the connection structure between the transition ring 3 and the tank cover 2, or the connection structure between the transition ring 3 and the tank body 1, or simultaneously damage both the connection structure between the transition ring 3 and the tank cover 2 and the connection structure between the transition ring 3 and the tank body 1. The transition ring 3 connects between the tank cover 2 and the tank body 1, and the connection position between the transition ring 3 and the top opening 11 of the tank body 1 is above the liquid surface of the liquid medium inside the storage tank. In the event of overpressure, only the position above the liquid surface of the liquid medium inside the storage tank is damaged, thus preventing leakage of the liquid medium inside the storage tank.

[0059] The storage tank of this application is a vertical storage tank, with the tank body 1 extending vertically along its axis, and the top of the tank body 1 having an opening 11. Specifically, the tank body 1 includes a tank wall and a tank bottom enclosed at the bottom of the tank wall, such that the opening 11 of the tank body 1 faces upward. The storage tank of this application is spaced inside an outer tank body, allowing overpressure-released gas to enter between the storage tank and the outer tank body. In practice, the tank wall can be a cylindrical structure to improve pressure resistance. Furthermore, the cross-section of the tank wall can also be polygonal or elliptical, etc.

[0060] The lid 2 of this application is provided at the top opening 11 of the can body 1 and covers the opening 11 of the can body 1.

[0061] Furthermore, the radius of curvature of the can lid 2 is 0.8 to 1.2 times the diameter of the can body 1. The radius of curvature of the can lid 2 is determined based on the diameter of the can body 1. When the radius of curvature R of the can lid 2 is close to the diameter D of the can body 1 (e.g., R = 0.8D to 1.2D), under the action of internal pressure, the circumferential stress and radial stress can tend to be uniform, reducing local stress concentration and reducing the risk of buckling and fatigue of the can lid 2.

[0062] Figure 2 A cross-sectional view of the can lid 2 is shown. Figure 3 A top view of can lid 2 is shown.

[0063] Reference Figure 2 and Figure 3The can lid 2 of this application includes at least two ring plate structures 21, which are arranged radially in sequence.

[0064] Specifically, the ring plate structures 21 form a ring, each ring plate structure 21 having an inner ring edge on the inside and an outer ring edge on the outside. Any two adjacent ring plate structures 21 are arranged radially in an inward and outward direction, that is, one ring plate structure 21 surrounds the outer periphery of another ring plate structure 21, and the diameter of the outer ring edge of one ring plate structure 21 is larger than the diameter of the outer ring edge of the other ring plate structure 21. Any two adjacent ring plate structures 21 in this application are sequentially spliced ​​together, and multiple ring plate structures 21 are sequentially spliced ​​radially to form a basic arc-shaped structure.

[0065] This application uses at least two ring plate structures 21 arranged radially from the inside out to divide the structure of the large can lid 2 into multiple ring plate structures 21 that are spliced ​​radially. This facilitates lightweight transportation, structural processing deformation and subsequent installation, and avoids the coordination problems of can lid 2 shape processing and overall hoisting.

[0066] Furthermore, the ring structure 21 includes multiple splicing plate units 211, which are sequentially spliced ​​together in the circumferential direction to form a ring. The multiple scattered splicing plate units 211 can be spliced ​​together in the circumferential direction to form a ring structure, which can further facilitate lightweight transportation and structural processing deformation.

[0067] Specifically, Figure 3 In the top view, the splicing panel unit 211 is shaped like a fan ring. Multiple splicing panel units 211 are spliced ​​together in sequence along the circumference to form a ring. The structure of the splicing panel unit 211 can be regarded as a structure surrounded by a concentric inner arc edge and an outer arc edge, as well as two line segments extending radially. The width of the splicing panel unit 211 gradually expands outward along the circumference, that is, the two sides of the connecting plate unit 31 gradually move away from the inner arc edge towards the outer arc edge.

[0068] According to design requirements, the thickness of the splicing plate unit 211 is generally between 5mm and 10mm. In addition, the thickness of the splicing plate unit 211 can also be determined based on the required size of the can lid 2, the required stress value, weight control, and even production costs. In fact, the thickness of the splicing plate unit 211 can also be less than 5mm or greater than 10mm.

[0069] In this embodiment, the splicing panel unit 211 is a spherical panel with arcs in both the radial and circumferential directions, with the center of the arc of the spherical panel facing inward.

[0070] Specifically, the splicing plate unit 211 has a spherical panel structure, with the concave spherical surface of the splicing plate facing the inside of the tank body 1 and the convex spherical surface facing outward. The splicing plate unit 211 can be processed into a spherical panel structure by pressing or other methods, so that the ring plate structure 21 formed by multiple splicing plate units 211 along the circumference and the arc-shaped tank cover 2 formed by multiple ring plate structures 21 spliced ​​together along the radial direction can both meet the design requirements for internal and external pressure in normal operation by their own bending performance, ensuring the normal use of the tank cover 2.

[0071] Between two adjacent ring plate structures 21, the inner ring plate structure 21 is designated as the first ring plate structure 212, and the outer ring plate structure 21 is designated as the second ring plate structure 213. The outer arc edge of the splicing plate unit 211 of the first ring plate structure 212 can connect with the inner arc edge of the first ring plate structure 212. In fact, the arc dimension of the outer arc edge of the splicing plate unit 211 of the first ring plate structure 212 matches the arc dimension of the inner arc edge of the first ring plate structure 212. The surface arc of the splicing plate unit 211 of the first ring plate structure 212 matches the surface arc of the splicing plate unit 211 of the second ring plate structure 213, facilitating the connection of the splicing plate units 211 of the first ring plate structure 212 and the second ring plate structure 213 to form an integral arc-shaped top structure.

[0072] Furthermore, this application uses multiple splicing plate units 211 to form a ring-shaped structure 21 along the circumference, and then uses multiple ring-shaped structures 21 with splicing plate units 211 to form an arc-shaped can lid 2 in the radial direction. Compared with the method of using multiple fan-shaped plates with larger radial dimensions for circumferential splicing, the method of at least two small-sized splicing plate units 211 arranged in the radial direction in this application can more easily control processing deformation and reduce the size requirements of processing equipment.

[0073] In this embodiment, the radial width of the splicing plate unit 211 ranges from 1m to 3m, which facilitates the processing equipment in pressing the splicing plate unit 211 into a spherical panel shape. Furthermore, in other embodiments, the radial width of the splicing plate unit 211 can be determined based on factors such as the required size of the can lid 2 according to the diameter of the can body 1, and the size of the on-site processing equipment. In practice, the radial width of the splicing plate unit 211 can be less than 1m or greater than 3m.

[0074] In this embodiment, any two adjacent ring plate structures 21 are sequentially overlapped.

[0075] Specifically, between two adjacent ring plate structures 21, the outer ring edge of the first ring plate structure 212 overlaps with the inner ring edge of the second ring plate structure 213. That is, the outer arc edge of the radially inner splicing plate unit 211 overlaps with the inner arc edge of the radially outer splicing plate unit 211. Furthermore, the overlapping sides of two radially adjacent splicing plates are welded to form a joint, eliminating the need for strict end-to-end contact between radially adjacent splicing plate units 211. This reduces the actual precision of the splicing plate units 211 during the design and assembly processes, making it suitable for connecting thinner splicing plate units 211 and improving the installation efficiency of the can lid 2.

[0076] In this embodiment, multiple splicing plate units 211 located on the same ring plate structure 21 are sequentially overlapped along the circumferential direction.

[0077] Specifically, one side of a splicing plate unit 211 overlaps the side of a splicing plate unit 211 on the circumferentially adjacent side, and the other side overlaps the side of another splicing plate unit 211 on the circumferentially adjacent side. Furthermore, the overlapping sides of the circumferentially adjacent splicing plate units 211 are welded to form a splice joint. This eliminates the need for strict end-to-end contact between adjacent splicing plate units 211, further reducing the actual precision of the splicing plate units 211 in the design and assembly processes. This method is suitable for connecting thinner splicing plate units 211, thereby improving the installation efficiency of the can lid 2.

[0078] Furthermore, there is a seam between two adjacent splicing plate units 211 on the same ring plate structure 21, and the seams of the splicing plate units 211 between two adjacent ring plate structures 21 are staggered from each other in the circumferential direction.

[0079] The splicing plate units 211 are joined by welding. On two radially adjacent ring plate structures 21, the joints of two adjacent splicing plate units 211 in the inner ring plate unit are staggered circumferentially from the joints of two adjacent splicing plate units 211 in the outer ring plate unit. This reduces the heat input concentration caused by continuous welds, which could lead to shrinkage deformation of the splicing plate units 211. It also reduces stress concentration in the can cover 2, improves the fatigue life of the can cover 2, and ensures the safe use of the can cover 2 under normal operating conditions. In addition, the circumferential staggering of the joints on the radially adjacent ring plate structures 21 also facilitates weld stress detection after installation.

[0080] Specifically, the splicing plate units 211 between two adjacent ring plate structures 21 are spaced at least 300mm apart along the circumference to meet the design requirements, reduce stress concentration in the can cover 2, and improve the fatigue life of the can cover 2.

[0081] Furthermore, the number of splicing plate units 211 in the second ring plate structure 213 is greater than the number of splicing plate units 211 in the first ring plate structure 212.

[0082] Specifically, the number of splicing plate units 211 in the outer second ring plate structure 213 is greater than the number of splicing plate units 211 in the inner first ring plate structure 212. This makes it easier to control the size and width of the outer splicing plate units 211 and avoid the splicing plate units 211 being too large and difficult to deform using on-site processing equipment.

[0083] In fact, the dimensions of each splicing plate unit 211 on each ring plate structure 21 are nearly identical, which facilitates the processing of the splicing plate unit 211 and makes it easy for multiple splicing plate units 211 to be spliced ​​circumferentially to form a ring. However, the dimensions of the splicing plate units 211 of different ring plate structures 21 are different, so that the splicing plate units 211 located on the outer periphery can be spliced ​​circumferentially to surround the outer periphery of the ring plate structure 21 located on the inner periphery.

[0084] In this embodiment, the ratio of the number of splicing plate units 211 in the second ring plate structure 213 to the number of splicing plate units 211 in the first ring plate structure 212 is 2:1.

[0085] The number of splicing panel units 211 located on the periphery is twice the number of splicing panel units 211 located on the inner periphery. This facilitates the layout and installation of the splicing panel units 211 on the periphery, and also ensures that each seam between the splicing panel units 211 on the periphery is staggered from the seams of the splicing panel units 211 on the inner periphery.

[0086] Furthermore, the innermost ring plate structure 21 forms a through hole at its innermost edge, and a mounting plate 22 is provided at the top center of the can lid 2. The outer periphery of the mounting plate 22 overlaps the inner ring edge of the innermost ring plate structure 21, thereby blocking the through hole. In fact, the mounting plate 22 can be a manhole mounting plate 22, used to install a manhole and a manhole cover.

[0087] In this embodiment, the outer periphery of the mounting plate 22 overlaps with the innermost ring plate structure 21, which facilitates the installation of the mounting plate 22 and the ring plate structure 21 and reduces the need for production and installation precision.

[0088] The transition ring 3 of this application is disposed circumferentially on the outer peripheral edge of the can lid 2, and the transition ring 3 connects the outer peripheral edge of the can lid 2 and the periphery of the opening 11 of the can body 1.

[0089] The transition ring 3 serves to connect and fix the tank cover 2 to the opening 11 of the tank body 1, so that the tank cover 2 can close the top opening 11 of the tank body 1. At the same time, during normal use of the storage tank, the annular transition ring 3 can act as a structural reinforcement to resist and disperse the stress caused by positive pressure, negative pressure and external loads, maintain the stability of the arc-shaped structure of the tank cover 2, thereby ensuring the structural safety and sealing of the storage tank and improving the service life of the storage tank under normal use conditions.

[0090] The transition ring 3 of this application connects the tank cover 2 and the tank body 1 by welding.

[0091] In this embodiment, the outermost ring plate structure 21 can be regarded as the outer peripheral edge of the can lid 2. The transition ring 3 is connected to the outermost ring plate structure 21 and can extend radially downward relative to the ring plate structure 21, so that the transition ring 3 can extend to the edge of the opening 11 of the can body 1 and connect with the can body 1.

[0092] Furthermore, the transition ring 3 extends radially outward and obliquely downward and is set at an angle to the outer wall of the tank body 1.

[0093] Specifically, the outer wall of the tank body 1 is vertically arranged, and the transition ring 3 extends radially outward and obliquely downward. The transition ring 3 has an inclined plate surface facing the tank body 1. The edge of the opening 11 on the top side of the tank body 1 is connected to the inclined plate surface of the transition ring 3, so that the angle between the inclined plate surface of the transition ring 3 located inside the inner wall of the tank body 1 and the side wall of the tank body 1 is an obtuse angle. The transition ring 3 and the side wall of the tank body 1 are set at an angle. Under the condition of overpressure in the tank body 1, stress concentration is likely to occur in the angled area, resulting in a significant increase in local stress, which makes the connection structure between the transition ring 3 and the tank body 1 prone to failure.

[0094] In this embodiment, the side of the transition ring 3 furthest from the can lid 2 extends outward from the outer wall of the can body 1, such that the angle between the inclined plate portion of the transition ring 3 outside the outer wall of the can body 1 and the side wall of the can body 1 is an acute angle. In some specific embodiments, the periphery of the opening 11 of the can body 1 is connected to the position below the middle of the transition ring 3, avoiding excessive outward extension of the transition ring 3 from the can body 1, which is beneficial for optimizing and reducing the size of the transition ring 3.

[0095] Furthermore, the radial curvature of the transition ring 3 is less than that of the can lid 2, resulting in a smaller change in the radial arc of the transition ring 3 compared to the radial arc of the can lid 2. This causes the curvature of the transition ring 3 and the can lid 2 at the weld joint to be discontinuous, forcing the stress flow lines to turn sharply at the connection point and causing local stress concentration. Under overpressure conditions inside the can body 1, the weld joints at locations with different radial curvatures will be subjected to additional bending moments and shear forces, making the connection structure between the transition ring 3 and the can lid 2 prone to failure.

[0096] In fact, the connection between the transition ring 3 and the can lid 2 can be a plane and a curved surface, or an arc surface with different radii along the radial direction.

[0097] Furthermore, the transition ring 3 has a smaller radial curvature, that is, the radial arc of the transition ring 3 relative to the can cover 2 is straighter, which makes it easier to weld the transition ring 3 to the periphery of the top opening 11 of the can body 1.

[0098] Furthermore, the thickness of the transition ring 3 is greater than that of the tank cover 2. Firstly, under normal operating conditions, the greater thickness of the transition ring 3, as a pressure-bearing component, improves the structural stability of the connection between the tank cover 2 and the tank body 1. However, when overpressure occurs inside the tank, the thicker plate of the transition ring 3 has higher rigidity and therefore less deformation, while the thinner plate of the tank cover 2 has lower rigidity and therefore more deformation. This difference in deformation forces the weld joint area to bear greater shear and bending stresses, making the connection between the tank cover 2 and the tank body 1 a weak point prone to failure under overpressure conditions.

[0099] Furthermore, the transition ring 3 extends in a straight line in the radial direction, which facilitates the welding operation between the transition ring 3 and the tank body 1. At the same time, the straight line extension of the transition ring 3 in the radial direction results in zero curvature of the transition ring 3 in the radial direction, which is significantly different from the radial curvature of the tank cover 2. This facilitates the occurrence of damage at the welding position between the tank cover 2 and the transition ring 3 under overpressure conditions.

[0100] Furthermore, the transition ring 3 extends radially upwards and outwards tangentially relative to the outer peripheral edge of the tank cover 2. The transition ring 3 is welded as close as possible to the outer peripheral edge of the tank cover 2 to ensure the welding strength between the transition ring 3 and the tank cover 2 under normal use conditions, thereby improving the service life of the tank during normal use.

[0101] Furthermore, the transition ring 3 includes multiple connecting plate units 31, which are sequentially spliced ​​together in the circumferential direction to form a ring. The circumferential splicing of multiple connecting plate units 31 facilitates lightweight transportation and on-site processing, and makes assembly by workers convenient.

[0102] Furthermore, the sides of adjacent connecting plate units 31 are connected by butt welding, reducing surface joints of the transition ring 3 after assembly and facilitating the connection of the transition ring 3 to the tank cover 2 and tank body 1 respectively. Simultaneously, butt welding improves the structural strength of the transition ring 3, reduces structural deformation, and ensures its pressure-bearing capacity. In this application, the thickness of the connecting plate unit 31 can be selected between 15mm and 40mm. A thicker connecting plate unit 31 also facilitates butt welding of its end walls.

[0103] In fact, the splicing plate unit 211 overlaps the connecting plate unit 31. The overlapping structure has low strength, making the connection position between the connecting plate unit 31 and the connecting plate unit 31 more susceptible to directional failure under overpressure.

[0104] Furthermore, the connecting plate unit 31 is an arc plate with an arcuate curvature along its circumference, with the center of the arc facing inward. Specifically, the connecting plate unit 31 is also fan-shaped in the top view. The structure of the connecting plate unit 31 can be regarded as a structure formed by a concentric inner arc edge and an outer arc edge, as well as two line segments extending radially. The width of the connecting plate unit 31 gradually increases outward along its circumference, that is, the two sides of the connecting plate unit 31 gradually move away from the inner arc edge towards the outer arc edge. The center of the arc on the surface of the connecting plate unit 31 faces inward, so that multiple splicing plate units 211 form a ring structure along the circumference.

[0105] The splicing plate unit 211 overlaps on the outward-facing inclined arc plate surface of the connecting plate unit 31, and the curvature of the outer arc edge of the splicing plate unit 211 matches the curvature of the inner arc edge of the connecting plate unit 31.

[0106] Figure 4 A front view of the anchoring device 5 is shown. Figure 5 A side view of the anchoring device 5 is shown.

[0107] Combination Figure 1 , Figure 4 and Figure 5 In this application, the tank body 1 is placed on a foundation, which includes an insulation layer 41 located at the bottom of the tank body 1 and a base layer 42 disposed at the bottom of the insulation layer 41. The bottom of the anchoring device 5 passes downward through the insulation layer 41 and is embedded in the base layer 42. This improves the structural stability of the anchoring device 5 and maintains tension on the outer peripheral wall of the tank body 1.

[0108] The anchoring device 5 of this application includes a pull plate 51, a support base 52, a fixing plate 53, and a reinforcing plate 54.

[0109] The top side of the pull plate 51 is welded to the bottom of the outer wall of the tank body 1, and the bottom side of the pull plate 51 extends downward through the insulation layer 41 and vertically into the base layer 42. A fixing plate 53 is disposed on the bottom side of the pull plate 51, extending horizontally and protruding from the opposite side surfaces of the pull plate 51. The fixing plate 53 is connected to the bottom side of the pull plate 51 and protrudes horizontally from the opposite side surfaces of the pull plate 51, thus securing the pull plate 51 within the base layer 42. This serves to prevent upward tension on the anchoring structure and resist the shear force of the foundation on the steel plate, improving the installation stability of the anchoring device 5. In this application, the fixing plate 53 is welded to the bottom of the pull plate 51.

[0110] A support base 52 is disposed on the insulation layer 41. The support base 52 extends vertically and protrudes upward from the insulation layer 41. The support base 52 is sleeved on the pull plate 51, and the space between the inner wall of the support base 52 and the pull plate 51 is filled with insulation material 524. The support base 52 can protect the structure of the pull plate 51 and reduce the shear force generated by the insulation layer 41 on the pull plate 51. Specifically, the support base 52 includes a cylinder 521, a top sealing plate 522 covering the top of the cylinder 521, and a bottom sealing plate 523 covering the bottom of the cylinder 521. The pull plate 51 passes through the top sealing plate 522, the cylinder 521, and the bottom sealing plate 523 in sequence, and the insulation material 524 is filled inside the cylinder 521.

[0111] The reinforcing plate 54 is disposed on the opposite two sides of the tie plate 51. The reinforcing plate 54 is located within the base layer 42 and is perpendicular to the fixing plate 53. Specifically, the reinforcing plate 54 is connected to the fixing plate 53 to form a reinforcing rib structure, which can resist shear force, prevent the tie plate 51 from moving horizontally or rotating, and further improve the strength of the anchoring device 5.

[0112] Furthermore, the pull plate 51 includes a bonding section 511, an extension section 512, and a pre-embedded section 513 connected sequentially from top to bottom. One side of the bonding section 511 is welded to the outer wall of the tank body 1. The top side of the extension section 512 is connected to the bottom side of the bonding section 511, and the bottom side of the extension section 512 extends obliquely away from the tank body 1, which can provide oblique traction force to the tank body 1 and effectively prevent the tank body 1 from tipping over under external loads such as wind loads or earthquakes. The top side of the pre-embedded section 513 is connected to the bottom side of the extension section 512, and the pre-embedded section 513 extends vertically, passes through the support base 52, and is pre-embedded in the base layer 42. The fixing plate 53 is set on the bottom side of the pre-embedded section 513, and the reinforcing plate 54 is set on the portion of the pre-embedded section 513 located in the base layer 42.

[0113] In this application, the bonding section 511, the extension section 512, and the embedded section 513 can be connected sequentially by welding.

[0114] Furthermore, the anchoring device 5 also includes a limiting plate 55, which is welded to the outer wall of the tank body 1 on both horizontal sides. A vertically continuous installation gap is formed between the middle of the limiting plate 55 and the outer wall of the tank body 1, and the fitting section 511 passes through the installation gap. A positioning plate 56 is provided on the plate surface of the fitting section 511 facing away from the tank body 1, and the bottom edge of the positioning plate 56 abuts against the top edge of the limiting plate 55. The limiting plate 55 restricts the lateral displacement of the fitting section 511 and, together with the positioning plate 56, restricts the vertical displacement of the fitting section 511, further improving the connection strength of the pull plate 51.

[0115] The anchoring device 5 also includes a mating pad 57. The bottom side of the extension section 512 is bent downward to form a vertically extending bent portion. The bent portion is aligned vertically with the top side of the embedded section 513 and both are welded to the mating pad 57, thereby improving the connection strength between the extension section 512 and the embedded section 513.

[0116] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. A storage tank, characterized in that, include: The can body has an opening at the top; Multiple anchoring devices are spaced apart along the circumference of the tank body; the anchoring devices are located on the lower part of the outer wall of the tank body, and extend downward to the foundation supporting the tank body and are fixedly connected to the foundation; A can lid, which is placed over the top opening of the can body, and the can lid has an arc-shaped structure with the opening facing downwards; A transition ring is circumferentially connected between the outer peripheral edge of the can lid and the periphery of the opening of the can body. The radial curvature of the transition ring is less than that of the can lid. The transition ring extends radially outward and downward at an angle to the side wall of the can body. The transition ring is used to prevent damage to the connection structure between the transition ring and the can lid and / or the connection structure between the transition ring and the can body after overpressure in the can body.

2. The storage tank according to claim 1, characterized in that, The outer peripheral edge of the can lid overlaps the transition ring; and / or The transition ring extends outward from the outer wall of the can body on the side furthest from the can lid; and / or The thickness of the transition ring is greater than the thickness of the can lid; and / or The transition ring extends in a straight line in the radial direction; the transition ring extends tangentially outward in the radial direction relative to the outer peripheral edge of the can lid.

3. The storage tank according to claim 1, characterized in that, The transition ring includes multiple connecting plate units, which are sequentially spliced ​​together along the circumferential direction to form a ring. The sides of adjacent connecting plate units are connected by butt welding; The connecting plate unit is an arc plate with an arc along the circumferential direction, and the center of the arc plate faces inward.

4. The storage tank according to claim 1, characterized in that, The can lid includes at least two ring plate structures arranged sequentially in a radial direction; Any two adjacent ring plate structures are sequentially overlapped; The transition ring is connected to the outer ring edge of the outermost ring plate structure.

5. The storage tank according to claim 4, characterized in that, The ring plate structure includes multiple splicing plate units, which are sequentially spliced ​​together along the circumference to form a ring; The width of the splicing panel unit gradually increases outward along the circumferential direction; The splicing panel unit is a spherical panel with arcs in both the radial and circumferential directions, with the center of the arc of the spherical panel facing inward.

6. The storage tank according to claim 5, characterized in that, There is a seam between two adjacent splicing plate units on the same ring plate structure, and the seams of the splicing plate units between two adjacent ring plate structures are staggered from each other circumferentially; the seams of the splicing plate units between two adjacent ring plate structures are at least 300 mm apart circumferentially; and / or Multiple splicing panel units are sequentially overlapped circumferentially; and / or The width of the splicing panel unit in the radial direction is 1m to 3m.

7. The storage tank according to claim 5, characterized in that, Between two adjacent ring plate structures, the ring plate structure located on the inner perimeter is designated as the first ring plate structure, and the ring plate structure located on the outer perimeter is designated as the second ring plate structure. The number of splicing plate units in the second ring plate structure is greater than the number of splicing plate units in the first ring plate structure. The ratio of the number of splicing plate units in the second ring plate structure to the number of splicing plate units in the first ring plate structure is 2:

1.

8. The storage tank according to claim 4, characterized in that, The can lid has a mounting plate at its center top, and the outer periphery of the mounting plate overlaps the inner ring edge of the ring plate structure located in the inner periphery; and / or The radius of curvature of the can lid is 0.8 to 1.2 times the diameter of the can body.

9. The storage tank according to claim 1, characterized in that, The foundation includes an insulation layer located at the bottom of the tank body and a base layer disposed at the bottom of the insulation layer; the bottom of the anchoring device passes downward through the insulation layer and is embedded in the base layer; The anchoring device includes a tie plate, a support base, a fixing plate, and a reinforcing plate; The top side of the pull plate is welded to the bottom of the outer wall of the tank body, and the bottom side of the pull plate passes downward through the insulation layer and extends vertically into the base layer; The support base is disposed on the insulation layer, the support base extends vertically and protrudes upward from the insulation layer, the support base is sleeved on the pull plate, and the inner wall of the support base and the pull plate are filled with insulation material. The fixing plate is disposed on the bottom side of the pull plate, and the fixing plate extends horizontally and protrudes from the opposite two sides of the pull plate. The reinforcing plate is disposed on the opposite two sides of the pull plate, and the reinforcing plate is located within the base layer and perpendicular to the fixing plate.

10. The storage tank according to claim 9, characterized in that, The pull plate includes a bonding section, an extension section, and a pre-embedded section connected sequentially from top to bottom; One side of the fitting section is welded to the outer wall of the tank body; the top side of the extension section is connected to the bottom side of the fitting section, and the bottom side of the extension section extends inclinedly away from the tank body; the top side of the embedded section is connected to the bottom side of the extension section, the embedded section extends vertically, the embedded section passes through the support base and is embedded in the foundation, the fixing plate is disposed on the bottom side of the embedded section, and the reinforcing plate is disposed on the portion of the embedded section located within the foundation.

Images