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CN-121993725-A - Heat-insulating sealed storage tank and installation method thereof

CN121993725ACN 121993725 ACN121993725 ACN 121993725ACN-121993725-A

Abstract

The application discloses a heat-insulating sealed storage tank and an installation method thereof, wherein the storage tank comprises a tank wall, an insulating tank, a gap, an elastic anti-convection element and a limiting plug-in column, the installation method comprises the steps of accurately positioning and fixing the limiting column in advance, connecting the anti-convection element again, finally completing blind press assembly of the insulating tank by utilizing mechanical limiting of a structure, converting the compression process which is originally highly dependent on experience of constructors into standard action controlled by mechanical dimension, directly applying normal compression force to the elastic anti-convection element by the side surface of the insulating tank, which is close to the tank wall, so that the elastic anti-convection element is forced to generate transverse expansion deformation and squeeze into the gap between adjacent insulating tanks, thereby realizing compact physical blocking of the bottom gap, cutting off a convection channel of gas flow, reducing thermal siphon effect, simplifying assembly alignment flow by utilizing the cooperation of the structure, and enhancing the whole heat-insulating sealing performance and structural reliability of a containment system.

Inventors

  • WEI YING
  • HE WEI

Assignees

  • 中太能源科技(上海)有限公司

Dates

Publication Date
20260508
Application Date
20260410

Claims (10)

  1. 1. An adiabatic sealed storage tank, comprising a tank wall (1) and a plurality of insulation boxes (2) arranged on the tank wall (1), wherein gaps (3) are formed between adjacent insulation boxes (2), and the adiabatic sealed storage tank is characterized by further comprising elastic anti-convection elements (4) arranged between the tank wall (1) and the insulation boxes (2), and limiting plug-in columns (5) fixedly connected with the tank wall (1) and inserted on the insulation boxes (2), wherein the elastic anti-convection elements (4) are positioned at the positions of the gaps (3), and the limiting plug-in columns (5) are used for fixing the insulation boxes (2) and limiting the displacement of the elastic anti-convection elements (4); The side surface of the insulation box (2) close to the tank wall (1) is used for pressing the elastic convection-preventing element (4) on the tank wall (1) so as to deform the elastic convection-preventing element (4) aligned with the gap (3) and insert the elastic convection-preventing element into the gap (3).
  2. 2. An insulated sealed tank according to claim 1, characterized in that the compression of the elastic anti-convection element (4) is inversely related to the permeability of the elastic anti-convection element (4), that the insulating tank (2) clamps and compresses the elastic anti-convection element (4) in cooperation with the tank wall (1) to bring the elastic anti-convection element (4) to a preset permeability, and/or that, The elastic convection-preventing element (4) is glass wool or aerogel.
  3. 3. An insulated sealed tank according to claim 1, characterized in that the spacing plug-in post (5) is provided with a connection (50) for connecting the elastic anti-convection element (4) and the spacing plug-in post (5), and/or that the spacing plug-in post (5) is adapted to pass through the elastic anti-convection element (4) and to be inserted into the insulating tank (2).
  4. 4. A thermally insulated sealed tank according to claim 1, characterized in that the spacing plug-in post (5) comprises a bottom end thick section (51) fixedly connected to the tank wall (1), a top end thin section (52) fixedly connected to the bottom end thick section (51), and a spacing step (53) between the bottom end thick section (51) and the top end thin section (52); The elastic convection prevention element (4) is sleeved on the periphery of the bottom end thick section (51), the insulation box (2) is sleeved on the top end thin section (52) and fixed, the limit step (53) is used for limiting and blocking the insulation box (2) in the pressing down process, and the elastic convection prevention element (4) is tightly pressed on the tank wall (1) on the side surface, close to the tank wall (1), of the insulation box (2) so that the elastic convection prevention element (4) achieves a preset compression amount.
  5. 5. The heat-insulating sealed storage tank according to claim 4, wherein a mounting hole (22) which is in plug-in fit with the limit plug-in post (5) is formed on the side surface of the insulating box (2) close to the tank wall (1), the insulating box (2) further comprises a hole step surface (23) formed in the mounting hole (22), and when the limit plug-in post (5) is inserted into the mounting hole (22), the hole step surface (23) is abutted with the limit step (53) so as to limit the pressing depth of the insulating box (2) to the elastic convection-preventing element (4).
  6. 6. A thermally insulated sealed tank according to claim 1, characterized in that the elastic convection prevention element (4) comprises vertical convection prevention members (41) arranged in the length direction of the insulating tank (2) and lateral convection prevention members (42) arranged in the width direction of the insulating tank (2) and interposed between two adjacent vertical convection prevention members (41), the vertical convection prevention members (41) being aligned with the gaps (3) in which the insulating tank (2) is vertically arranged, the lateral convection prevention members (42) being aligned with the gaps (3) in which the insulating tank (2) is laterally arranged.
  7. 7. A thermally insulated sealed tank according to claim 4 or 5, characterized in that the elastic anti-convection element (4) comprises vertical anti-convection members (41) arranged in the length direction of the insulating tank (2), and lateral anti-convection members (42) arranged in the width direction of the insulating tank (2) and interposed between two adjacent vertical anti-convection members (41); The vertical convection prevention component (41) is provided with a first limiting through hole (411) for the bottom end thick section (51) to be inserted and pass through, the horizontal convection prevention component (42) is provided with a second limiting through hole (421), and the tank wall (1) is also provided with a limiting convex edge (6) for being inserted into the second limiting through hole (421).
  8. 8. A thermally insulated sealed tank according to claim 1, characterized in that the tank wall (1) is further provided with adhesive connection strips (7) between the insulating tank (2) and the tank wall (1), a plurality of said adhesive connection strips (7) being arranged in an array along the plane of the tank wall (1).
  9. 9. A thermally insulated sealed tank according to claim 1, characterized in that the spacing plug-in post (5) is further sleeved with a spacing spacer (54) between the elastic convection-preventing element (4) and the tank wall (1), and the spacing spacer (54) is further provided with spacing pins (55) arranged in an array along the circumferential side of the spacing spacer (54) and used for inserting the elastic convection-preventing element (4).
  10. 10. A method of installing an insulated sealed tank as claimed in any one of claims 1 to 9, comprising the steps of: S1, marking points and lines at preset positions of the tank wall (1); s2, fixing a plurality of limit plug-in posts (5) at preset positions of the tank wall (1), wherein the preset positions correspond to the gaps (3) between the adjacent insulation boxes (2); s3, fixedly connecting the elastic convection-preventing element (4) with the limiting plug-in column (5); S4, sleeving the insulation box (2) on the limit plug-in column (5) and performing pressing installation, and extruding the elastic convection-preventing element (4) by utilizing the side surface of the insulation box (2) close to one side of the tank wall (1) so as to deform the elastic convection-preventing element (4) and insert the elastic convection-preventing element into the gap (3); S5, stopping pressing down the insulation box (2) when the insulation box (2) is pressed down and blocked by the limiting structure of the limiting plug-in column (5), so that the elastic convection-preventing element (4) achieves a preset compression amount and a preset permeability.

Description

Heat-insulating sealed storage tank and installation method thereof Technical Field The application relates to the technical field of low-temperature storage and transportation equipment, in particular to a heat-insulating sealed storage tank and an installation method thereof. Background In a containment system of an insulated sealed storage tank such as a Liquefied Natural Gas (LNG) carrier or a land cryogenic storage tank, a plurality of insulation boxes are usually laid on an inner wall surface of the storage tank in order to ensure thermal insulation performance. However, due to manufacturing tolerances and installation processes, splice gaps must be left between adjacent insulation boxes. In the prior art, if the gap is not fully and uniformly filled, gas convection (i.e. thermosiphon effect) is easily formed between the bottom of the insulation box and the gap channel, so that a great amount of loss of cooling capacity or invasion of external heat is conducted, and the overall heat insulation performance and the long-term operation safety of the enclosure system are seriously affected. Disclosure of Invention The application provides an adiabatic sealed storage tank and an installation method thereof, aiming at overcoming the defect that the gap of an insulation tank of the adiabatic sealed storage tank in the prior art is easy to generate a thermosiphon effect so as to influence the heat insulation performance and the safety of a containment system. The application provides a heat-insulating sealed storage tank and an installation method thereof, which adopts the following technical scheme: The heat-insulating sealed storage tank comprises a tank wall, a plurality of insulating boxes arranged on the tank wall, an elastic anti-convection element arranged between the tank wall and the insulating boxes, and a limit plug-in column fixedly connected with the tank wall and inserted into the insulating boxes, wherein the elastic anti-convection element is positioned at the position of the gap, the limit plug-in column is used for fixing the insulating boxes and limiting the displacement of the elastic anti-convection element, and the side surface, close to the tank wall, of the insulating boxes is used for pressing the elastic anti-convection element onto the tank wall so that the elastic anti-convection element aligned with the gap deforms and is inserted into the gap. By adopting the technical scheme, the elastic anti-convection element is fixed by utilizing the limiting plug-in column fixed on the tank wall, so that the sliding of the element in the subsequent installation process is effectively prevented, and meanwhile, the normal compression force is directly applied to the elastic anti-convection element by means of the side surface of the insulating box, which is close to the tank wall, so that the elastic anti-convection element is forced to generate transverse expansion deformation and squeeze into a gap between adjacent insulating boxes. The application not only realizes compact physical blocking of the bottom gap, cuts off the convection channel of gas flow, reduces the thermosiphon effect, but also simplifies the assembly alignment process by utilizing the cooperation of the structure, and enhances the integral heat insulation sealing performance and the structural reliability of the enclosure system. Preferably, the compression amount of the elastic anti-convection element is inversely related to the permeability of the elastic anti-convection element, the insulation box is matched with the tank wall to clamp and compress the elastic anti-convection element, so that the elastic anti-convection element reaches the preset permeability, and/or, The elastic convection-preventing element is glass wool or aerogel. By adopting the technical scheme, the elastic convection-preventing element is compressed to a preset deformation state through clamping the insulation box and the tank wall, so that the internal porosity of the elastic convection-preventing element is reduced to a target threshold value, and the preset permeability is accurately controlled. The application ensures homogeneous and controllable anti-convection effect of different areas, avoids air leakage convection caused by insufficient compression or material fracture failure caused by excessive compression, improves the stability of an anti-convection system, adopts glass wool or aerogel which not only has extremely low heat conductivity and can effectively isolate heat transfer, but also has the characteristics of structural rebound resilience and multiple holes. Preferably, the limiting plug-in column is provided with a connecting piece for connecting the elastic anti-convection element and the limiting plug-in column, and/or the limiting plug-in column is used for penetrating through the elastic anti-convection element and being inserted into the insulation box. By adopting the technical scheme, the elastic convection-preventing elem