An adiabatic seal tank and a method of installing the same
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SINOTECH ENERGY CO LTD
- Filing Date
- 2026-04-10
- Publication Date
- 2026-07-10
Smart Images
Figure CN121993725B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cryogenic storage and transportation equipment technology, and in particular to an insulated and sealed storage tank and its installation method. Background Technology
[0002] In the containment systems of insulated and sealed storage tanks such as liquefied natural gas (LNG) carriers or onshore cryogenic storage tanks, multiple insulating boxes are typically laid out on the inner wall of the tank to ensure thermal insulation performance. However, due to manufacturing tolerances and installation processes, gaps inevitably remain between adjacent insulating boxes. In existing technologies, if these gaps are not filled sufficiently and evenly, gas convection (i.e., thermosiphon effect) can easily form at the bottom of the insulating box and within the gap channels, leading to significant loss of cooling capacity or intrusion of external heat, severely affecting the overall thermal insulation performance and long-term operational safety of the containment system. Summary of the Invention
[0003] In order to improve the shortcomings of existing heat-insulated sealed storage tanks where the gap between the insulation boxes is prone to thermal siphon effect, thus affecting the thermal insulation performance and safety of the enclosure system, this application provides a heat-insulated sealed storage tank and its installation method.
[0004] The technical solution provided in this application for an insulated and sealed storage tank and its installation method is as follows:
[0005] An insulated and sealed storage tank includes a tank wall and a plurality of insulating boxes mounted on the tank wall, with gaps formed between adjacent insulating boxes. It also includes an elastic anti-convection element disposed between the tank wall and the insulating boxes, and a limiting plug-in post fixedly connected to the tank wall and inserted into the insulating box. The elastic anti-convection element is located at the gap, and the limiting plug-in post is used to fix the insulating box and limit the displacement of the elastic anti-convection element. A side of the insulating box near the tank wall is used to press the elastic anti-convection element against the tank wall, so that the elastic anti-convection element aligned with the gap deforms and inserts into the gap.
[0006] By employing the above technical solution, the elastic anti-convection element is fixed to the tank wall using a limiting plug-in post, effectively preventing slippage of the element during subsequent installation. Simultaneously, a normal clamping force is applied directly to the elastic anti-convection element from the side of the insulation box near the tank wall, forcing the elastic anti-convection element to undergo lateral expansion deformation and be squeezed into the gap between adjacent insulation boxes. This application not only achieves a dense physical seal of the bottom gap, cutting off the convection channel for gas flow and reducing the thermosiphon effect, but also simplifies the assembly and alignment process through structural fit, enhancing the overall thermal insulation and sealing performance and structural reliability of the enclosure system.
[0007] Preferably, the compression amount of the elastic anti-convection element is negatively correlated with its permeability; the insulating box and the tank wall cooperate to clamp and compress the elastic anti-convection element, so that the elastic anti-convection element reaches a preset permeability; and / or,
[0008] The elastic anti-convection element is made of glass wool or aerogel.
[0009] By adopting the above technical solution, this application compresses the elastic anti-convection element to a preset deformation state through the clamping of the insulating box and the tank wall, reducing the internal porosity of the elastic anti-convection element to the target threshold, thereby precisely controlling the preset permeability. This ensures that the anti-convection effect in different areas is uniform and controllable, avoiding air leakage due to insufficient compression or material fracture failure due to excessive compression, thus improving the stability of the anti-convection system. Glass wool or aerogel is selected, which not only has extremely low thermal conductivity, effectively isolating heat transfer, but also has structural resilience and porous characteristics. This application utilizes the high resilience of glass wool or aerogel to ensure that the material can maintain a lasting adhesion to the gap sidewalls under long-term low-temperature compression, and utilizes the porous characteristics of glass wool or aerogel to effectively delay the movement of gas molecules, further enhancing the thermal insulation and cold preservation effect of the enclosure system in extreme temperature change environments.
[0010] Preferably, the limiting plug is provided with a connector for connecting the elastic anti-convection element and the limiting plug; and / or, the limiting plug is used to pass through the elastic anti-convection element and be inserted into the insulating box.
[0011] By adopting the above technical solution, and through the locking and fixing of the connectors and / or the direct physical piercing mechanism of the limiting plug-in post, a firm in-situ locking of the elastic anti-convection element is achieved. This enhances the anti-slip and anti-deflection constraint of the elastic anti-convection element, and reduces problems such as follow-up misalignment, lateral slippage, or local wrinkling and curling that easily occur when high-resilience flexible materials are subjected to the pressure of the insulation box. In turn, it ensures that the deformation allowance of the elastic anti-convection element after being compressed can be accurately and directionally squeezed into and seal the target gap, thereby improving the structural stability and assembly yield of the bottom anti-convection node of the entire insulated sealing tank.
[0012] Preferably, the limiting plug includes a bottom thick section fixedly connected to the tank wall, a top thin section fixedly connected to the bottom thick section, and a limiting step located between the bottom thick section and the top thin section; the elastic anti-convection element is sleeved around the bottom thick section; the insulating box is sleeved on the top thin section and fixed, and during the pressing process of the insulating box, the limiting step is used to limit and block the insulating box, and the side of the insulating box near the tank wall presses the elastic anti-convection element against the tank wall so that the elastic anti-convection element reaches a preset compression amount.
[0013] By adopting the above technical solution, the limiting plug is designed as a stepped structure with a rigid limiting step, so that the thicker section at the bottom is used to support and install the anti-convection element, and the thinner section at the top is dedicated to the positioning and plugging of the insulation box. In the blind operation stage of pressing down the insulation box, this application uses the limiting step to provide a clear physical and mechanical blockage, which structurally reduces the possibility of the insulation box excessively compressing the elastic anti-convection element, ensuring that each installation can accurately reach the preset compression amount, and improving the consistency of batch construction and product assembly quality.
[0014] Preferably, the insulating box has a mounting hole on the side near the tank wall that engages with the limiting plug, and the insulating box also includes a stepped surface formed in the mounting hole; when the limiting plug is inserted into the mounting hole, the stepped surface abuts against the limiting step to limit the pressure depth of the insulating box on the elastic anti-convection element.
[0015] By adopting the above technical solution, a stepped surface of the hole adapted to the limiting step is prefabricated in the mounting hole inside the insulation box, forming a concealed deep limiting fit mechanism. This application not only achieves precise control of the pressing depth of the insulation box through the mutual contact of the stepped surfaces, reducing installation tolerance, but also disperses the local stress at the bottom of the insulation box by dispersing the force in the hole, avoiding damage to the bottom plate of the insulation box due to stress concentration, and enhancing the structural life and load-bearing stability of the component.
[0016] Preferably, the elastic anti-convection element includes a vertical anti-convection component arranged along the length of the insulation box, and a horizontal anti-convection component arranged along the width of the insulation box and inserted between two adjacent vertical anti-convection components; the vertical anti-convection component is aligned with the gap of the vertically placed insulation box, and the horizontal anti-convection component is aligned with the gap of the horizontally placed insulation box.
[0017] By adopting the above technical solution, the elastic anti-convection element is modularly divided into components in two dimensions: horizontal and vertical. This makes the arrangement logic of the elastic anti-convection element correspond to the crisscrossing gap network formed after the assembly of the insulating box array. This application constructs a comprehensive grid-like anti-convection barrier by splicing and inserting the horizontal and vertical anti-convection components, which effectively blocks the horizontal or vertical flow of gas inside the gap network and improves the fluid damping effect of the bottom layer of the entire storage tank.
[0018] Preferably, the vertical anti-convection component is provided with a first limiting through hole for the bottom thick section to be inserted and pass through, the horizontal anti-convection component is provided with a second limiting through hole, and the tank wall is also provided with a limiting protrusion for being inserted into the second limiting through hole.
[0019] By adopting the above technical solution, through holes are opened on the horizontal and vertical anti-convection components, and through anchoring is carried out by the bottom thick section and the limiting protrusion on the tank wall. This application not only effectively overcomes the torsional deformation and misalignment of the long strip elastic element under its own weight or compression by using physical puncture fixation, but also ensures that the relative positions of the horizontal and vertical components in the cross intersection area are constant, thereby enhancing the overall structural stability of the anti-convection frame under complex working conditions.
[0020] Preferably, the tank wall is further provided with an adhesive connecting strip located between the insulation box and the tank wall, and a plurality of the adhesive connecting strips are arranged in an array along the plane of the tank wall.
[0021] By adopting the above technical solution, an array of adhesive connecting strips is introduced at the contact interface between the bottom of the insulation box and the tank wall. Based on the mechanical insertion limit, this application adds chemical bonding to assist in fixing, which not only improves the shear strength between the insulation box and the tank wall and effectively resists the lateral impact force generated by the sloshing of liquid cargo in the storage tank, but also buffers rigid collisions and improves the connection stiffness of the double-layer interface and the overall shock absorption capacity.
[0022] Preferably, the limiting plug is further fitted with a limiting gasket located between the elastic anti-convection element and the tank wall, and the limiting gasket is further provided with limiting pins arranged in an array along the periphery of the limiting gasket for inserting the elastic anti-convection element.
[0023] By adopting the above technical solution, a limiting pad with an array of limiting pins is added to the bottom of the elastic anti-convection element, so that the limiting pins penetrate upward and firmly grip the inside of the elastic medium; this application utilizes a multi-point piercing internal anchoring mechanism to effectively prevent irregular sliding or wrinkling and rolling of the bottom of the elastic anti-convection element when it expands to both sides under pressure, ensuring that the deformation of the anti-convection element is always controlled and oriented towards filling the gap, thereby improving the uniformity of the interface seal.
[0024] Preferably, a method for installing an insulated and sealed storage tank, for installing the aforementioned insulated and sealed storage tank, further includes the following steps:
[0025] S1. Marking dots and lines at predetermined positions on the tank wall;
[0026] S2. Fix a plurality of limiting plug-in pins at a preset position on the tank wall, the preset position corresponding to the gap between adjacent insulation boxes;
[0027] S3. Fix the elastic anti-convection element to the limiting plug-in post;
[0028] S4. The insulating box is fitted onto the limiting plug and pressed down. The side of the insulating box near the tank wall is used to squeeze the elastic anti-convection element so that the elastic anti-convection element deforms and is inserted into the gap.
[0029] S5. When the insulation box is blocked by the limiting structure of the limiting plug post, stop pressing down the insulation box so that the elastic anti-convection element reaches the preset compression amount and preset penetration rate.
[0030] By adopting the above technical solution, this application transforms the compression process, which originally relied heavily on the experience of construction personnel, into a standardized action controlled by mechanical dimensions. This is achieved by first precisely positioning and fixing the limiting posts, then connecting the anti-convection elements, and finally using the mechanical limiting mechanism built into the structure to complete the blind pressure assembly of the insulation box. This not only reduces the difficulty of construction and the error rate, but also ensures that the anti-convection elements at each node can achieve the preset compression amount and preset permeability required by the design, thus achieving a dual improvement in the installation efficiency and engineering quality of the overall enclosure system.
[0031] In summary, this application includes at least one of the following beneficial technical effects:
[0032] 1. A heat-insulated and sealed storage tank, which uses a limiting plug-in post fixed on the tank wall to pre-position an elastic anti-convection element. When the insulation box is pressed down, the side directly squeezes the elastic anti-convection element, causing the elastic anti-convection element to expand laterally and fill the gap. This application effectively prevents the anti-convection material from misaligning and slipping during blind pressure, achieves a tight seal of the splicing gap at the bottom of the insulation box, weakens the thermosiphon effect, and improves the overall heat insulation performance of the system.
[0033] 2. An insulated and sealed storage tank, wherein the limiting plug is designed with a thick bottom section, a thin top section and a limiting step, which, together with the stepped surface of the hole inside the insulation box, forms a physical barrier; this application reduces the excessive or insufficient compression of the elastic anti-convection element from a mechanical structure perspective, and can control the preset compression amount of the elastic anti-convection element so that the porosity inside the elastic anti-convection element reaches the target anti-convection permeability, ensuring the consistency of engineering assembly and material life;
[0034] 3. An installation method for an insulated and sealed storage tank, wherein the limiting plug-in column and the elastic anti-convection element are fixed first, and then the insulation box is pressed down until it is blocked by the limiting structure and stops automatically; this application transforms the reliance on manual experience into mechanical fixed limiting, standardizes the construction process, reduces the difficulty of operation, and improves the on-site installation efficiency and the overall insulation performance of the storage tank. Attached Figure Description
[0035] Figure 1 This is an exploded structural diagram of the integral assembly structure of an insulated and sealed storage tank according to this application.
[0036] Figure 2 This is a detailed structural diagram showing the interlocking of the insulation box, the limiting plug-in post, and the stepped surface of the hole in this application.
[0037] Figure 3 This is an exploded structural diagram of another embodiment of an insulated and sealed storage tank according to this application.
[0038] Figure 4 This is an exploded structural diagram of the elastic anti-convection element, the limiting gasket, and the limiting plug-in post of this application.
[0039] Figure 5 This is a schematic flowchart illustrating the steps of an embodiment of an insulated and sealed storage tank installation method according to this application. Explanation of reference numerals:
[0040] 1. Tank wall; 2. Insulation box; 22. Mounting hole; 23. Hole stepped surface; 3. Gap; 4. Elastic anti-convection element; 41. Vertical anti-convection component; 411. First limiting through hole; 42. Horizontal anti-convection component; 421. Second limiting through hole; 5. Limiting plug-in post; 50. Connector; 51. Bottom thick section; 52. Top thin section; 53. Limiting step; 54. Limiting gasket; 55. Limiting pin; 6. Limiting flange; 7. Adhesive connecting strip. Detailed Implementation
[0041] The following is in conjunction with the appendix Figures 1 to 5 This application will be described in further detail.
[0042] This application discloses an insulated, sealed storage tank and its installation method. (Refer to...) Figure 1 and Figure 2 An insulated and sealed storage tank includes a tank wall 1 and a plurality of insulating boxes 2 installed on the tank wall 1. A gap 3 is formed between adjacent insulating boxes 2. The tank wall 1 and the insulating boxes 2 are also included. The tank wall 1 and the insulating boxes 2 are provided with elastic anti-convection elements 4 and limiting plugs 5 fixedly connected to the tank wall 1 and inserted into the insulating boxes 2. The elastic anti-convection elements 4 are located at the gap 3. The limiting plugs 5 are used to fix the insulating boxes 2 and limit the displacement of the elastic anti-convection elements 4. The side of the insulating box 2 near the tank wall 1 is used to press the elastic anti-convection elements 4 against the tank wall 1 so that the elastic anti-convection elements 4 aligned with the gap 3 deform and are inserted into the gap 3.
[0043] During construction, the limiting plug 5 is first fixed to the tank wall 1. Then, the elastic anti-convection element 4 is inserted into the limiting plug 5 to complete the physical pre-positioning. Subsequently, the insulation box 2 is pressed in along the axial guide of the limiting plug 5. During the downward pressing motion, the side of the insulation box 2 near the tank wall 1 serves as a rigid pressure surface to directly apply a compressive load to the elastic anti-convection element 4, which is forcefully pressed against the tank wall 1. As the compressive force is continuously output, the elastic anti-convection element 4 aligned with the inlet of the gap 3 undergoes lateral expansion and volume displacement deformation due to forced compression. The bulging part of the deformed elastic anti-convection element 4 is squeezed into and densely fills the gap 3 between adjacent insulation boxes 2.
[0044] This application utilizes the limiting plug-in post 5 to perform through-type mechanical pre-positioning of the elastic anti-convection element 4, reducing the slippage, displacement, and misalignment problems that easily occur in the anti-convection material during the covering assembly of the insulation box 2. At the same time, by converting the pressing assembly force of the insulation box 2 into a sealing deformation force that forces the elastic anti-convection element 4 to adaptively squeeze into and fill the gap 3, the physical sealing of the gap 3 is achieved, blocking the gas convection circulation and thermosiphon effect generated inside the bottom gap 3 network, improving the thermal insulation and cold preservation performance of the overall enclosure system of the storage tank and the safety of long-term equipment operation.
[0045] Furthermore, in the connection structure of the components, the elastic anti-convection element 4 is sandwiched between the insulating box 2 and the tank wall 1. The insulating box 2 and the tank wall 1 together constitute a physical clamping structure that applies limiting and pressure to the elastic anti-convection element 4; and / or, the elastic anti-convection element 4 is glass wool or aerogel; during the downward pressing installation of the insulating box 2 towards the tank wall 1, the rigid bottom surface of the insulating box 2 cooperates with the tank wall 1 to apply a continuous normal compressive load to the elastic anti-convection element 4, forcing the elastic anti-convection element 4 to undergo densification and shrinkage deformation in the thickness direction, thereby continuously generating and increasing the compression amount. The physical mechanism that the compression amount of the elastic anti-convection element 4 is negatively correlated with its permeability is that as the compression amount of the elastic anti-convection element 4 gradually increases, the porous gaps inside the elastic anti-convection element 4 are continuously squeezed and reduced, the cross-sectional area of gas flow decreases accordingly, and the permeability of the material gradually decreases.
[0046] This application utilizes the clamping mechanism between the insulating box 2 and the tank wall 1 to compress the elastic anti-convection element 4 to the target deformation state, thereby ensuring that the internal porosity of the elastic anti-convection element 4 reaches the preset permeability. This not only avoids the potential risks of gas convection and cold loss caused by excessive pore size due to insufficient assembly compression, but also reduces the risk of fiber breakage and failure of the elastic anti-convection element 4 due to excessive compression. This ensures that the anti-convection effect in different areas of the storage tank is highly homogeneous, precise, and controllable, thereby improving the long-term stability of the insulation and sealing of the entire enclosure system.
[0047] The elastic anti-convection element 4 is either glass wool or aerogel. The glass wool or aerogel body is interwoven with micron-sized fibers and contains a microporous structure, which not only constructs a static air insulation layer, but also provides the component with flexibility and structural resilience. When the insulation box 2 applies normal clamping pressure to the elastic anti-convection element 4 during installation, the pores inside the glass wool or aerogel are forced to be rapidly compacted and undergo densification shrinkage deformation. The volume deformation margin expands into the transverse gap 3 and fills it deeply. This application selects glass wool or aerogel as the elastic anti-convection element 4. On the one hand, it directly utilizes the thermal conductivity property of the material to weaken the heat transfer at the bottom interface. On the other hand, the high resilience and porous characteristics ensure that the material can still maintain a lasting, uniform and dense sealing force on the bottom of the insulation box 2 and the sidewall of the gap 3 under long-term structural pressure and under conditions of extremely low temperature shrinkage and severe temperature change cycles. This overcomes the problems of low-temperature embrittlement, plastic deformation and fatigue shrinkage failure that are prone to occur in traditional filling materials.
[0048] In addition, such as Figure 3 As shown, in another embodiment, the limiting plug post 5 is provided with a connector 50 for connecting the elastic anti-convection element 4 and the limiting plug post 5; and / or, the limiting plug post 5 is used to pass through the elastic anti-convection element 4 and be inserted into the insulating box 2.
[0049] During installation, the construction personnel shall first align and lower the elastic anti-convection element 4 and arrange it around the limiting plug post 5, or allow the elastic anti-convection element 4 to be passed through the limiting plug post 5. If the connector 50 is used, the elastic anti-convection element 4 and the limiting plug post 5 shall be physically locked together by the spike limiting structure on the connector 50, thus completing the initial in-situ fixation of the anti-convection material.
[0050] This application improves the anti-slip and anti-deflection constraints of the elastic anti-convection element 4 by using the active locking and fixing mechanism of the connector 50 and / or the direct physical piercing and plugging mechanism of the limiting plug post 5. This reduces problems such as follow-up misalignment, lateral slippage, or local wrinkling and curling that are prone to occur when the high-resilience flexible material is covered by the gravity of the insulation box 2. This ensures that the deformation margin of the elastic anti-convection element 4 can be accurately and directionally squeezed into and seal the target gap, thereby improving the structural stability and assembly yield of the bottom anti-convection node of the entire thermally insulated and sealed storage tank.
[0051] Specifically, such as Figure 2As shown, the limiting plug-in post 5 of this application includes a bottom thick section 51 fixedly connected to the tank wall 1, a top thin section 52 extending upward in the same direction and fixedly connected to the bottom thick section 51, and a limiting step 53 formed at the junction of the radial dimension change of the bottom thick section 51 and the top thin section 52. The elastic anti-convection element 4 is accurately fitted around the bottom thick section 51 to complete the pre-positioning of the bottom component, while the insulation box 2 is fitted onto the top thin section 52 through a reserved mating structure and fixed thereto; when the insulation box 2 moves along the guide... When the top section 52 of the limiting plug 5 of the shaft is pressed and installed, the side of the insulation box 2 near the tank wall 1 gradually contacts and continuously presses the elastic anti-convection element 4 at the bottom in a normal direction. As the downward stroke continues to advance, the displacement of the insulation box 2 will directly contact the limiting step 53 on the limiting plug 5. The limiting step 53 is used to limit and block the movement of the insulation box 2, forcing the displacement of the insulation box 2 to stop. The side of the insulation box 2 near the tank wall 1 just presses the elastic anti-convection element 4 against the tank wall 1.
[0052] This application uses a stepped limiting insertion post 5 with a limiting step 53, where the thicker bottom section 51 serves as the support area for the elastic material and the thinner top section 52 serves as the insertion guide area for the box. This reduces the risk of excessive compression of the elastic anti-convection element 4 due to excessive force applied by construction personnel, thereby damaging the porous rebound fiber and causing failure. It also avoids the hidden danger of insufficient air tightness due to inadequate compression. The limiting of the rigid structure ensures that the clamped elastic anti-convection element 4 reaches the preset compression amount in each assembly of the insulation box 2, improving the dimensional consistency and batch construction efficiency of the bottom array assembly of the entire heat-insulating and sealed storage tank.
[0053] More specifically, such as Figure 2 As shown, the insulating box 2 of this application has a mounting hole 22 on the side near the tank wall 1 for the insertion and engagement of the limiting plug 5. The mounting hole 22 has an inwardly contracting stepped surface 23 formed in the internal channel of the mounting hole 22. The stepped surface 23 corresponds to the limiting step 53 in the middle of the limiting plug 5 in the spatial position. When the insulating box 2 moves along the axial direction of the limiting plug 5 under the action of external force, the limiting plug 5 is inserted and slides relatively in the mounting hole 22 of the insulating box 2. As the insulating box 2 continues to advance and continuously squeezes the elastic anti-convection element 4 at the bottom, the stepped surface 23 hidden inside the mounting hole 22 continuously approaches the limiting step 53 on the limiting plug 5 until the stepped surface 23 and the limiting step 53 make hard physical contact with each other. The reaction force of the contact blocks the continued downward movement of the insulating box 2, thereby forcibly terminating the movement.
[0054] This application utilizes the surface contact mechanism between the internal stepped surface 23 and the limiting step 53 to not only limit the pressing depth of the insulation box 2, reducing excessive or insufficient compression of the elastic anti-convection element 4 and ensuring the homogeneity of the airtight seal, but also disperses the localized concentrated stress on the bottom of the insulation box 2 during assembly and limiting through the mechanical transmission of force inside the hole. This effectively avoids the risk of warping, panel peeling, or structural tearing caused by the bottom side plate of the insulation box 2 directly bearing all the bottom support force, thereby enhancing the overall structural rigidity and assembly yield of the insulation box 2.
[0055] In addition, such as Figure 2 As shown, the elastic anti-convection element 4 includes a vertical anti-convection component 41 extending along the length of the insulating box 2, and a horizontal anti-convection component 42 extending along the width of the insulating box 2 and inserted between two adjacent vertical anti-convection components 41. The vertical anti-convection component 41 is directly opposite to the vertical gap 3 formed after the array of insulating boxes 2 is assembled, while the horizontal anti-convection component 42 is directly opposite to the horizontal gap 3 of the insulating box 2. During construction, the vertical anti-convection component 41 is first laid flat along the preset longitudinal trajectory, and then the horizontal anti-convection component 42 is laid along the transverse trajectory. The traces are aligned, and the end of the horizontal anti-convection component 42 is horizontally inserted into the adjacent vertical anti-convection component 41, thereby interweaving and assembling a complete cross-shaped anti-convection grid skeleton on the physical plane. During the subsequent pressing and closing movement of the insulation box 2, the bottom surface of the insulation box 2 arranged in a matrix simultaneously applies vertical normal compressive stress to the vertical anti-convection component 41 and the horizontal anti-convection component 42, forcing the interwoven horizontal and vertical components to simultaneously produce horizontal expansion volume displacement deformation, and squeeze into the aligned vertical gap 3 and horizontal gap 3 respectively.
[0056] This application constructs a comprehensive grid-like physical barrier against convection within the storage tank by splitting the elastic anti-convection element 4 into a vertical anti-convection component 41 and a horizontal anti-convection component 42 that can be plugged into each other. This blocks the horizontal or vertical flow of hot and cold gases within the gap 3 network, thereby enhancing the fluid damping effect and thermal insulation performance of the entire insulated and sealed storage tank.
[0057] And, as Figure 1 and Figure 2 As shown, the vertical anti-convection component 41 is provided with a first limiting through hole 411 for the bottom thick section 51 to be inserted and pass through, the horizontal anti-convection component 42 is provided with a second limiting through hole 421, and the tank wall 1 is also provided with a limiting flange 6 for being inserted into the second limiting through hole 421.
[0058] This application first lays the vertical anti-convection component 41 flat along the longitudinal trajectory, and precisely aligns the first limiting through hole 411 into the bottom thick section 51 to complete the physical anchoring of the vertical structure. Then, the horizontal anti-convection component 42 is aligned and pressed down along the transverse trajectory. This not only horizontally inserts the end of the horizontal anti-convection component 42 into the adjacent vertical anti-convection component 41 to complete the splicing of the planar anti-convection network, but also simultaneously fits and presses the second limiting through hole 421 into the preset limiting flange 6 on the tank wall 1 to achieve independent fixed-point anchoring of the transverse structure. This application utilizes the bottom thick section 51 passing through the first... The fitting mechanism of the limiting through hole 411 and the fitting mechanism of the limiting protrusion 6 inserted into the second limiting through hole 421 provide a through-type rigid mechanical anchoring for their respective components. This not only overcomes the problems of torsion deformation, roll-up and lateral misalignment that are easily generated by long strip elastic flexible materials under their own weight, tension or compression, but also ensures that when the insulation box 2 is subjected to heavy-tonnage compression and covering assembly, the various separate anti-convection components in the cross intersection area and the extension section will not deflect or slip or be pulled and displaced by each other, thus maintaining the stability of the geometric shape and sealing position of the grid-like bottom anti-convection skeleton.
[0059] Furthermore, such as Figure 2 As shown, adhesive connecting strips 7 are laid or coated on the tank wall 1 between the insulation box 2 and the tank wall 1, and these multiple adhesive connecting strips 7 are arranged in an array along the installation plane of the tank wall 1. By setting the arrayed adhesive connecting strips 7, this application not only increases the surface contact adhesion and tangential shear strength between the bottom surface of the insulation box 2 and the tank wall 1, but also dissipates and resists the lateral impact load on the inner wall caused by the violent swaying of the internal liquid cargo when the liquid cargo is sailing in wind and waves or when the land storage tank encounters extreme working conditions, but also reduces the risk of stress concentration and fatigue fracture at the single mechanical anchor point at the bottom. The adhesive connecting strips 7 are preferably epoxy resin putty.
[0060] Furthermore, such as Figure 4As shown, a limiting gasket 54 is also fitted on the limiting plug 5 between the elastic anti-convection element 4 and the tank wall 1. The limiting gasket 54 is also provided with limiting pins 55 arranged in an array along the periphery of the limiting gasket 54 and used for inserting the elastic anti-convection element 4. The construction workers first put the limiting gasket 54 into the limiting plug post 5, and then pressed down the elastic anti-convection element 4 to lay it flat, so that the array of limiting pins 55 can be inserted into the bottom fiber of the elastic anti-convection element 4 by physical piercing action to complete the initial residence and anchoring. When the insulation box 2 applies a normal blind pressure load to the elastic anti-convection element 4 in the subsequent assembly stroke, the elastic anti-convection element 4, which is forced to be pressed, tends to escape laterally, slide or have bottom wrinkles and flip. At this time, the limiting pins 55 have a dynamic shear resistance, which restricts the lateral displacement of the bottom fiber from the inside of the material and forcibly restricts the sliding freedom of the bottom of the elastic anti-convection element 4, thereby forcing the volume deformation margin of the elastic anti-convection element 4 caused by the pressure to expand along the path of least resistance and squeeze into the gap between adjacent insulation boxes 2.
[0061] This application establishes a multi-contact internal deep anchoring mechanism by setting a limiting gasket 54 with a limiting pin 55, thereby overcoming the problems of bottom interface slippage, irregular lateral displacement and deformation runaway that are prone to occur when high-resilience flexible materials are subjected to unidirectional vertical compression. This improves the compactness of the bottom interface anti-convection system of the insulated sealed storage tank and the structural stability under overall operating conditions.
[0062] Specifically, such as Figure 5 As shown, a method for installing an insulated and sealed storage tank includes the following steps:
[0063] S1. Mark the points and lines at the preset positions on the tank wall 1;
[0064] S2. Fix multiple limiting plug-in posts 5 at preset positions on the tank wall 1, with the preset positions corresponding to the gaps 3 between adjacent insulation boxes 2;
[0065] S3. Fix the elastic anti-convection element 4 to the limiting plug-in post 5;
[0066] S4. The insulation box 2 is fitted onto the limiting plug post 5 and pressed down. The side of the insulation box 2 near the tank wall 1 is used to squeeze the elastic anti-convection element 4 so that the elastic anti-convection element 4 deforms and is inserted into the gap 3.
[0067] S5. When the insulation box 2 is blocked by the limiting structure of the limiting plug post 5, stop pressing the insulation box 2 so that the elastic anti-convection element 4 reaches the preset compression amount and preset penetration rate.
[0068] The construction personnel first accurately marked and marked the positions on the tank wall 1 to establish a global installation coordinate network. Then, they firmly fixed multiple limiting plug-in posts 5 at the marked and marked positions. Next, they fixed the elastic anti-convection element 4 to the limiting plug-in post 5 to complete the physical pre-positioning of the bottom sealing medium. Then, they accurately fitted the positioning structure of the insulation box 2 onto the limiting plug-in post 5 and applied a pushing force to carry out the installation movement. During the continuous downward dynamic stroke, the rigid side of the insulation box 2 near the tank wall 1 smoothly and evenly contacts and gradually and forcefully squeezes the elastic anti-convection element 4 at the bottom, forcing the elastic anti-convection element 4 to undergo lateral expansion physical deformation under pressure. Its expansion margin is squeezed upward and filled into the gap 3. As the downward displacement goes deeper, when the downward pressure of the insulation box 2 is blocked by the rigid limiting structure on the limiting plug-in post 5 and mechanical interference occurs, the stroke is reached. At this time, the downward movement of the insulation box 2 is stopped and locked.
[0069] This application integrates the initial measurement and positioning, the intermediate insertion of the through-type anti-slip pre-installation, and the subsequent rigid mechanical limiting and pressing. It not only relies on a simple unidirectional pressing action to force the elastic anti-convection element 4 to adapt its deformation and accurately fill the gap 3, blocking the potential thermosiphon gas convection channel, but also uses the physical blocking effect of the limiting insertion post 5 to accurately solidify the pressing depth. This ensures that the clamped elastic anti-convection element 4 can achieve the preset compression amount and preset permeability of the engineering design every time, reducing the difficulty of on-site construction and ensuring the high homogeneity of the bottom anti-convection sealing effect and the long-term reliability of thermal insulation and airtightness of the large-scale cryogenic storage and transportation system.
[0070] The implementation principle of the insulated and sealed storage tank and its installation method in this application is as follows:
[0071] In an insulated and sealed storage tank, during construction, the limiting plug 5 is first fixed to the tank wall 1. Then, the elastic anti-convection element 4 is inserted into the limiting plug 5 to complete physical pre-positioning. Subsequently, an insulating box 2 is press-fitted along the axial guide of the limiting plug 5. During the downward pressing motion, the side of the insulating box 2 near the tank wall 1 acts as a rigid pressure surface, directly applying a compressive load to the elastic anti-convection element 4, forcefully pressing the elastic anti-convection element 4 against the tank wall 1. With the continuous output of the compressive force, the elastic anti-convection element 4, aligned with the inlet of the gap 3, undergoes lateral expansion and volume displacement deformation due to forced compression, resulting in a bulge in the deformed elastic anti-convection element 4. Partially squeezed and densely filled into the gap 3 between adjacent insulation boxes 2; This application uses the limiting plug post 5 to mechanically pre-position the elastic anti-convection element 4 through, reducing the slippage, displacement and misalignment problems that are prone to occur in the anti-convection material when the insulation box 2 is covered and assembled. At the same time, by converting the pressing assembly force of the insulation box 2 into the sealing deformation force that forces the elastic anti-convection element 4 to adaptively squeeze into and fill the gap 3, the physical sealing of the gap 3 is achieved, blocking the gas convection circulation and thermosiphon effect generated inside the bottom gap 3 network, improving the thermal insulation and cold preservation performance of the overall enclosure system of the storage tank and the safety of long-term operation of the equipment;
[0072] This application utilizes the surface contact mechanism between the internal stepped surface 23 and the limiting step 53 to not only limit the pressing depth of the insulation box 2, reducing excessive or insufficient compression of the elastic anti-convection element 4 and ensuring the homogeneity of the airtight seal, but also disperses the localized concentrated stress on the bottom of the insulation box 2 during assembly and limiting through the mechanical transmission of force inside the hole. This effectively avoids the risk of warping, panel peeling, or structural tearing caused by the bottom side plate of the insulation box 2 directly bearing all the bottom support force, thereby enhancing the overall structural rigidity and assembly yield of the insulation box 2.
[0073] A method for installing an insulated and sealed storage tank involves the following steps: First, construction personnel precisely mark and mark lines at predetermined positions on the tank wall 1 to establish a global installation coordinate network. Then, multiple limiting plug-in posts 5 are firmly fixed at the marked and marked positions. Next, the elastic anti-convection element 4 is fixed to the limiting plug-in posts 5 to complete the physical pre-positioning of the bottom sealing medium. Subsequently, the positioning structure of the insulation box 2 is accurately fitted onto the limiting plug-in posts 5, and a pushing force is applied for installation. During the continuous downward pressure, the rigid side of the insulation box 2 near the tank wall 1 smoothly and evenly contacts and gradually and forcefully presses the elastic anti-convection element 4 at the bottom, forcing the elastic anti-convection element 4 to undergo lateral expansion under pressure. Its expansion margin is then squeezed upwards and fills the gap 3. As the downward displacement deepens, when the insulation box... When the downward pressure is obstructed by the rigid limiting structure on the limiting plug 5 and mechanical interference occurs, the stroke reaches the target, at which point the action of the pressure insulation box 2 stops and is locked; This application integrates the early measurement and positioning, the mid-term plug-in anti-slip pre-installation, and the later rigid mechanical limiting press-fitting into one, it not only relies on a simple unidirectional pressing action to force the elastic anti-convection element 4 to adapt its deformation and accurately fill the gap 3, blocking the potential thermosiphon gas convection channel, but also uses the physical blocking effect of the limiting plug 5 to accurately solidify the downward pressure depth, ensuring that the clamped elastic anti-convection element 4 can achieve the preset compression amount and preset permeability of the engineering design every time, reducing the difficulty of on-site construction, and ensuring the high homogeneity of the bottom anti-convection sealing effect and the long-term reliability of thermal insulation and airtightness of the large cryogenic storage and transportation system.
[0074] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A heat-insulated and sealed storage tank, comprising a tank wall (1) and a plurality of insulating boxes (2) mounted on the tank wall (1), wherein a gap (3) is formed between adjacent insulating boxes (2), characterized in that, It also includes an elastic anti-convection element (4) disposed between the tank wall (1) and the insulation box (2), and a limiting plug (5) fixedly connected to the tank wall (1) and inserted into the insulation box (2). The elastic anti-convection element (4) is located at the gap (3), and the limiting plug (5) is used to fix the insulation box (2) and limit the displacement of the elastic anti-convection element (4). The side of the insulating box (2) near the tank wall (1) is used to press the elastic anti-convection element (4) against the tank wall (1) so that the elastic anti-convection element (4) aligned with the gap (3) deforms and inserts into the gap (3); The limiting plug (5) includes a bottom thick section (51) fixedly connected to the tank wall (1), a top thin section (52) fixedly connected to the bottom thick section (51), and a limiting step (53) located between the bottom thick section (51) and the top thin section (52); the elastic anti-convection element (4) is sleeved on the periphery of the bottom thick section (51); the insulation box (2) is sleeved on the top thin section (52) and fixed. During the pressing process, the limiting step (53) is used to limit and block the insulation box (2). The side of the insulation box (2) near the tank wall (1) presses the elastic anti-convection element (4) against the tank wall (1) so that the elastic anti-convection element (4) reaches the preset compression amount. The insulating box (2) has a mounting hole (22) on its side near the tank wall (1) for insertion and engagement with the limiting plug (5). The insulating box (2) also includes a stepped surface (23) formed in the mounting hole (22). When the limiting plug (5) is inserted into the mounting hole (22), the stepped surface (23) abuts against the limiting step (53) to limit the pressure depth of the insulating box (2) on the elastic anti-convection element (4). The limiting plug (5) is also fitted with a limiting gasket (54) located between the elastic anti-convection element (4) and the tank wall (1). The limiting gasket (54) is also provided with limiting pins (55) arranged in an array along the periphery of the limiting gasket (54) and used to insert the elastic anti-convection element (4).
2. The insulated and sealed storage tank according to claim 1, characterized in that, The compression amount of the elastic anti-convection element (4) is negatively correlated with the permeability of the elastic anti-convection element (4). The insulating box (2) and the tank wall (1) cooperate to clamp and compress the elastic anti-convection element (4) so that the elastic anti-convection element (4) reaches a preset permeability; and / or, The elastic anti-convection element (4) is glass wool or aerogel.
3. The insulated and sealed storage tank according to claim 1, characterized in that, The limiting plug (5) is provided with a connector (50) for connecting the elastic anti-convection element (4) and the limiting plug (5); and / or, the limiting plug (5) is used to pass through the elastic anti-convection element (4) and insert into the insulation box (2).
4. The insulated and sealed storage tank according to claim 1, characterized in that, The elastic anti-convection element (4) includes a vertical anti-convection component (41) arranged along the length of the insulation box (2) and a horizontal anti-convection component (42) arranged along the width of the insulation box (2) and inserted between two adjacent vertical anti-convection components (41); the vertical anti-convection component (41) is aligned with the vertical gap (3) of the insulation box (2), and the horizontal anti-convection component (42) is aligned with the horizontal gap (3) of the insulation box (2).
5. The insulated and sealed storage tank according to claim 1, characterized in that, The elastic anti-convection element (4) includes a vertical anti-convection component (41) arranged along the length of the insulation box (2), and a horizontal anti-convection component (42) arranged along the width of the insulation box (2) and inserted between two adjacent vertical anti-convection components (41). The vertical anti-convection component (41) is provided with a first limiting through hole (411) for the bottom thick section (51) to be inserted and pass through, the horizontal anti-convection component (42) is provided with a second limiting through hole (421), and the tank wall (1) is also provided with a limiting flange (6) for being inserted into the second limiting through hole (421).
6. The insulated and sealed storage tank according to claim 1, characterized in that, The tank wall (1) is also provided with an adhesive connecting strip (7) located between the insulation box (2) and the tank wall (1), and a plurality of the adhesive connecting strips (7) are arranged in an array along the plane of the tank wall (1).
7. A method for installing an insulated and sealed storage tank, used for installing an insulated and sealed storage tank according to any one of claims 1 to 6, characterized in that, Includes the following steps: S1. Marking lines at predetermined positions on the tank wall (1); S2. Fix a plurality of limiting plug-in pins (5) at a preset position on the tank wall (1), the preset position corresponding to the gap (3) between adjacent insulation boxes (2); S3. Fix the elastic anti-convection element (4) to the limiting plug post (5); S4. The insulating box (2) is fitted onto the limiting plug post (5) and pressed down. The side of the insulating box (2) near the tank wall (1) is used to squeeze the elastic anti-convection element (4) so that the elastic anti-convection element (4) deforms and is inserted into the gap (3). S5. When the insulation box (2) is blocked by the limiting structure of the limiting plug (5) when it is pressed down, stop pressing down the insulation box (2) so that the elastic anti-convection element (4) reaches the preset compression amount and preset permeability.