CN112253986B - Metal inner tank structure of membrane type low-temperature storage tank - Google Patents
Metal inner tank structure of membrane type low-temperature storage tank Download PDFInfo
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- CN112253986B CN112253986B CN202010998587.5A CN202010998587A CN112253986B CN 112253986 B CN112253986 B CN 112253986B CN 202010998587 A CN202010998587 A CN 202010998587A CN 112253986 B CN112253986 B CN 112253986B
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- 239000002184 metal Substances 0.000 title claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 40
- 238000003860 storage Methods 0.000 title claims abstract description 31
- 239000012528 membrane Substances 0.000 title claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 38
- 230000007704 transition Effects 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 28
- 210000001503 joint Anatomy 0.000 claims description 12
- 239000011324 bead Substances 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 8
- 206010066054 Dysmorphism Diseases 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims 3
- 238000010030 laminating Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 description 17
- 239000003949 liquefied natural gas Substances 0.000 description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 230000008859 change Effects 0.000 description 8
- 239000010408 film Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 5
- 230000001012 protector Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007907 direct compression Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a metal inner tank structure of a membrane type low-temperature storage tank, which comprises a tank bottom and a tank wall, wherein the tank wall is formed by welding base plates, the tank bottom is of an approximately circular structure, the tank bottom is formed by splicing the base plates and filling splicing gaps with peripheral special-shaped plates, the base plates are a basic unit or a plurality of basic units, the basic unit is formed by longitudinal waves and transverse waves on flat plates and flat plates, the longitudinal waves and the transverse waves are both of arch structures with one concave surface and one convex surface, the longitudinal waves and the transverse waves are vertically and alternately connected together through smooth transition of a curved surface, and the longitudinal waves and the transverse waves are both in smooth transition with the flat plates on the periphery through the curved surface. This metal inner tank structure of diaphragm type low temperature storage tank, stress concentration when can avoiding expend with heat and contract with cold only needs to use a small amount of moulds when making, when assembling, can improve on-the-spot packaging efficiency.
Description
Technical Field
The invention relates to the technical field of film type low-temperature storage tanks, which are used for storing media such as LNG, LPG, ethylene, liquid nitrogen, liquid oxygen and the like which need low-temperature storage, in particular to a metal inner tank structure of a film type low-temperature storage tank.
Background
Natural gas is a naturally mined combustible gas, and the main component of the natural gas is methane.LNGIs prepared by condensing gaseous natural gas into liquid at normal pressure by cooling to-162 deg.C. The liquefied natural gas can greatly save storage and transportation space and cost, and has the characteristics of large heat value, high performance and the like. Natural gas is becoming more and more popular as a clean energy source, and LNG is the preferred fuel in many countries.
With the increasing demand of China for natural gas, the construction and development of LNG receiving stations are rapid, and the number of LNG receiving stations which are built and put into operation is gradually increased. The LNG storage tank is an important facility of the receiving station for storing LNG unloaded from the LNG ship, and thus the construction of the LNG storage tank is an important project of the receiving station. Common LNG storage tank generally comprises concrete outer tank, adiabatic filling layer (including welt, expanded perlite, elasticity cotton felt etc.) and 9% nickel steel inner tank, and neotype film type storage tank is the same except that the concrete outer tank, and adiabatic filling layer, tank bottoms and inner tank structure are different with traditional LNG storage tank completely. For the research of the film type storage tank, the beginning of foreign countries is early, the research has been successful in the sixties of the last century, and the film type storage tank is applied to LNG transport ships and land storage tanks, and typical storage tanks comprise a GTT GST system, a buried film tank system and a KC-1 film tank system. So far, the thin film type LNG storage tank has not been applied in China.
The metal inner tanks of GTT and IHI are composed of criss-cross corrugations, the criss-cross positions are provided with superposed knots with complex shapes and structures, the size of the criss-cross corrugations of GTT is large, the longitudinal wave is large, the transverse wave is small (the tank wall position, the direction connecting the tank top and the tank bottom is longitudinal, and the direction parallel to the tank top and the tank bottom is transverse), and the sizes of the criss-cross corrugations of IHI are the same; KC-1 is a group of criss-cross corrugations, the corrugations at the staggered positions are not connected, the staggered positions are connected by flat plates, GTT and IHI structures are too complex, processing is very difficult, stress at the position of a kink is easily concentrated, the corrugations of KC-1 are large, material waste is caused, the corrugations are connected through the flat plates, stress at the positions of the corrugations is easily concentrated during expansion with heat and contraction with cold, the criss-cross corrugations are a group of waves, the structure is complex, and processing and detection are difficult.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a metal inner tank structure of a membrane type low-temperature storage tank, which solves the problems that the structure is too complex, the processing is very difficult, the stress at the position of a kink is easy to concentrate, the corrugations are connected through a flat plate, and the longitudinal and transverse corrugations are all a group of waves.
In order to achieve the purpose, the invention is realized by the following technical scheme: the metal inner tank structure of the membrane type low-temperature storage tank comprises a tank bottom and a tank wall, wherein the tank wall is formed by welding base plates, the tank bottom is of an approximate circular structure, splicing notches are formed by splicing the base plates and by filling peripheral special-shaped plates, the base plates are a basic unit or a plurality of basic units, the base plates are formed by welding or deep drawing (deep drawing), the basic units are formed by longitudinal waves and transverse waves on flat plates and flat plates, the longitudinal waves and the transverse waves are both arch structures with concave surfaces and convex surfaces, the longitudinal waves and the transverse waves are vertically and alternately connected together through curved surface smooth transition, and the longitudinal waves and the transverse waves are both in curved surface smooth transition with the peripheral flat plates; the tank bottom and the tank wall are in transition through angle plates and welded to form a closed barrel-shaped structure. Longitudinal waves and transverse waves are single waves, and due to the fact that the curved surfaces of all parts are in smooth transition, when the device expands with heat and contracts with cold, deformation caused by temperature change can be offset through curvature change, and stress concentration caused by deformation is effectively reduced. Only need use a small amount of moulds when making, when assembling, tank bottoms middle part and jar wall are base plate interconnect, do not have the requirement of position, directionality, and are very convenient, also can just weld a plurality of base plates together before dispatching from the factory, form big standard cell, do not receive the influence of equipment place environment, have improved on-the-spot packaging efficiency.
Preferably, the welding forming mode of the base plate is lap joint or butt joint, the longitudinal wave and the transverse wave are the same in shape and structure, the basic unit is a metal sheet formed through a die and then cut into rectangular plates with staggered longitudinal waves and transverse waves, the base plate at the annular position of the tank wall is in butt joint welding through a circumferential angle, and the transverse waves are connected with the longitudinal waves during welding forming of the base plate.
Preferably, one side of the tank bottom and one side of the tank wall, which correspond to each other, are welded with the surface of the angle plate, the surface of the angle plate is provided with connecting corrugations of which the two ends are respectively connected with the corrugations of the tank wall and the tank bottom, the longitudinal angle of the angle plate is a smooth curved surface of 90 degrees as a whole, the connecting corrugations are attached to the corrugations on the surface of the substrate, the connecting corrugations are longitudinally raised corrugations, the transverse angle of the angle plate is curved, the surface of the angle plate is annularly attached to the surface of the corner protector, the adjacent angle plates are welded by lapping or butt joint, the angle bead is welded under the angle plate positioned at the periphery of the tank bottom, the angle bead is fixed on the wall of the tank through a bolt and a nut, the angle bead is a high-strength metal piece, the upper part of the angle bead is welded with the bottom of the angle plate, the wave crests are connected and turned through the angle plates, and the tank wall and the tank bottom can be rapidly assembled together by matching with the end sealing plates.
Preferably, the special-shaped plates are cut through the base plate or directly formed through a die, and transition is carried out on the periphery of the tank bottom through the special-shaped plates so as to connect the tank bottom and the tank wall together to form a closed barreled structure.
Preferably, the surface of the angle plate is in butt joint or lap joint welding with the surface of the special-shaped plate, the angle plate is a plate with a plurality of waves formed by directly pressing through a die, the angle plate is integrally in a 90-degree smooth curved surface shape in the longitudinal direction, longitudinal raised ripples are arranged on the plate surface, and the ripples can be attached to the ripples of the tank bottom tank wall substrate for sealing welding.
Preferably, the angle plate, the end sealing plate and the base plate are all metal corrugated plates, the angle plate is a plate with a plurality of waves formed by direct pressing through a die, the tank wall and the tank bottom can be rapidly assembled together by matching with the end sealing plate to form a closed barrel-shaped structure, and the quality of a finished product of the metal inner tank is improved.
Preferably, the base plate forming the tank bottom is welded above the metal fixing pieces of the anchoring plate, and the plurality of base plates are welded above the metal fixing pieces of the anchoring plate during welding and are cut and combined by adopting standard base plates.
Preferably, the edges of the basic units for lap welding are provided with folded edges for lap welding, the folded edges are provided with 45-degree cut angles, and the folded edges are used for lap welding.
Preferably, the junction between the longitudinal wave and the transverse wave is transited through a transition section, the transition section comprises a large end and a small end, the width and the height of the transition section are gradually reduced from the large end to the small end, the transition section extends from one end of the longitudinal wave to the lower edge of the transverse wave and is connected with the lower edge of the transverse wave, or the transition section extends from one end of the transverse wave to the lower edge of the longitudinal wave and is connected with the lower edge of the longitudinal wave, so that the transition is more stable, and the integral structural strength of the foundation unit can be ensured.
Preferably, still include the end plate, the surface of end plate is seted up the stifled ripples of shutoff ripple, stifled ripples one end opening and opening shape can match with the ripple of the longitudinal wave of base plate, transverse wave, dysmorphism board, and the other end of stifled ripples passes through curved surface smooth transition with the end plate body, the top and the end plate welding of tank wall, the end of the longitudinal wave on the base plate of tank wall top passes through the end plate shutoff, tank bottom outer circumference department can not pass through the transverse wave or the longitudinal wave that the scute is connected and the ripple on the dysmorphism board of scute through the end plate shutoff, and simultaneously, uncovered ripple also passes through the end plate shutoff on the scute.
The invention provides a metal inner tank structure of a membrane type low-temperature storage tank. Compared with the prior art, the method has the following beneficial effects:
(1) The metal inner tank structure of the membrane type low-temperature storage tank is characterized in that the tank wall is formed by welding base plates, the tank bottom is formed by welding base plates which are spliced and extended on the periphery and special-shaped plates forming the periphery, each base plate is composed of one basic unit or a plurality of basic units, the base plates are formed by welding or deep drawing, each basic unit is composed of a longitudinal wave, a transverse wave and a flat plate, the longitudinal wave and the transverse wave are in smooth transition through a curved surface, and the longitudinal wave and the transverse wave are in smooth transition through a curved surface with the flat plates on the periphery; the base plate on the periphery of the tank bottom is welded with the tank wall through the angle plate, the end sealing plate and the special-shaped plates positioned on the periphery of the bottom of the tank bottom to form a closed barrel-shaped structure, few molds are needed for processing, the base plate and the end sealing plate are molds with uniform sizes, the rest parts of the tank bottom (except the edge part of the tank bottom) are naturally extended and paved and pasted by standard base plates, the direction, the position and the angle are not different, all longitudinal waves and transverse waves are in smooth transition connection by adopting curved surfaces, the longitudinal waves and the transverse waves are single waves, the shapes and the structures of all the waves are consistent, and when the tank is expanded with heat and contracted with cold, all parts can offset the deformation caused by the change of the temperature through the change of the curvature, so that the local yield damage caused by the stress concentration generated by the deformation is effectively reduced, and when the tank is manufactured, all the thin film plates can be processed only by using a plurality of molds; when the tank is assembled, the middle part of the tank bottom and the tank wall are mutually connected by the substrates, the requirements on position and directivity are avoided, the tank is very convenient, a plurality of substrates can be welded together before leaving a factory to form a large standard unit, the influence of the environment of an assembly site is avoided, and the field assembly efficiency is improved.
(2) The metal inner tank structure of the membrane type low-temperature storage tank is characterized in that an angle plate, a sealing plate and a base plate are all corrugated metal plates, the longitudinal angle of the angle plate is integrally in a 90-degree smooth curved surface shape, a longitudinal protruding ripple attached to a surface ripple of the base plate is arranged on the surface of the angle plate, the transverse angle of the angle plate is in a curve shape, the surface of the angle plate is annularly attached to the surface of a corner support piece, adjacent angle plates are welded in a lap joint or butt joint mode, the base plate forming the tank bottom is welded above the metal fixing piece of the anchoring plate, a plurality of base plates are welded above the metal fixing piece of the anchoring plate during welding, standard base plates are used for cutting and combining, wave crest connection and steering are carried out through the angle plate, the angle plate cannot carry out wave crest connection, sealing is carried out through the sealing plate, the angle plate is a plate which is directly formed through a die in a pressing mode and is provided with the plate surface as a whole body formed through one-time pressing mode, the sealing structure has the advantages that welding is not needed, the sealing performance is good, the tank wall and the tank bottom can be rapidly assembled together by matching with the sealing head plate, a closed barrel-shaped structure is formed, and the quality of a finished product of the metal inner tank is improved.
Drawings
FIG. 1 is a partial schematic view of the present invention;
FIG. 2 is a top plan view of a can bottom construction of the present invention;
FIG. 3 is a perspective view of a first combination of basic cell structures according to the present invention;
FIG. 4 is a front view of a first combination of the basic cell structure of the present invention;
FIG. 5 is a top view of a first combination of basic cell structures according to the present invention;
FIG. 6 is a top view of a second combination of basic cell structures according to the present invention;
FIG. 7 is a top view of a third embodiment of the basic cell structure of the present invention;
FIG. 8 is a top view of a fourth embodiment of the basic cell structure of the present invention;
FIG. 9 is a top view of a fifth embodiment of the basic cell structure of the present invention;
FIG. 10 is a top view of a sixth combination of basic cell structures in accordance with the present invention;
FIG. 11 is a top view of a seventh combination of basic cell structures in accordance with the present invention;
FIG. 12 is a top view of an eighth combination of basic cell structures in accordance with the present invention;
FIG. 13 is a top view of a substrate structure composed of two basic units according to the present invention;
FIG. 14 is a top view of a substrate structure composed of three basic units according to the present invention;
FIG. 15 is a top view of a substrate structure composed of four basic units according to the present invention;
FIG. 16 is a top view of a substrate structure composed of six basic cells according to the present invention;
FIG. 17 is a perspective view of the gusset construction of the present invention;
FIG. 18 is a perspective view of the head plate structure of the present invention;
FIG. 19 is an enlarged schematic view at A of FIG. 2 according to the present invention;
FIG. 20 is an enlarged schematic view of the invention at B of FIG. 1;
fig. 21 is an enlarged view of the invention at C in fig. 1.
In the figure: 1. the tank bottom; 2. a tank wall; 11. a substrate; 12. a shaped plate; 13. protecting the corner; 14. a gusset; 15. an anchoring plate; 16. connecting the corrugations; 21. a head sealing plate; 22. plugging ripple waves; 11-1, a base unit; 11-11, longitudinal wave; 11-12, transverse wave; 11-13, flat plate; 11-14, transition section; 11-14-1, big end; 11-14-2 and a small end.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-21, in the embodiment of the present invention: a metal inner tank structure of a membrane type low-temperature storage tank comprises a tank bottom 1 and a tank wall 2, wherein the tank wall 2 is formed by welding base plates 11, the tank bottom 1 is of an approximately circular structure, the tank bottom is formed by splicing the base plates 11 and filling splicing gaps with peripheral special-shaped plates 12, the base plates 11 are composed of a plurality of base units 11-1, the base plates 11 are formed by welding, the base plates 11 can also be formed by deep drawing (deep drawing), the base units 11-1 are formed by flat plates 11-13 and longitudinal waves 11-11 and transverse waves 11-12 on the flat plates, the longitudinal waves 11-11 and the transverse waves 11-12 are both of arch structures which one surface is concave and the other surface is convex, and the longitudinal waves 11-11 and the transverse waves 11-12 are vertically connected in a staggered mode through smooth transition of curved surfaces, the longitudinal waves 11-11 and the transverse waves 11-12 are smoothly transited with the flat plates 11-13 on the periphery through curved surfaces; the tank bottom 1 and the tank wall are transited through an angle plate 14 and welded to form a closed barrel-shaped structure, the welding forming mode of the base plate 11 is lap joint or butt joint, the shape and structure of the longitudinal wave 11-11 and the transverse wave 11-12 are the same, the basic unit 11-1 is formed by a metal thin plate through a mould, the rectangular plate with criss-cross ripples is cut, a base plate 11 at the annular position of the tank wall 2 is in butt welding through a circumferential angle, transverse waves 11-12 are connected with longitudinal waves 11-11 when the base plate 11 is welded and formed, the rectangular plate further comprises a sealing plate 21, a wave blocking 22 for blocking the ripples is arranged on the surface of the sealing plate 21, one end of the wave blocking 22 is open, the opening shape can be matched with the ripples of the longitudinal waves, the transverse waves and the special-shaped plates of the base plate, the other end of the wave blocking and a sealing plate body are in smooth transition through a curved surface, the top of the tank wall 2 is welded with the sealing plate 21, and the end of the longitudinal waves of the base plate at the top end of the tank wall is blocked through the sealing plate. The top longitudinal wave 11-11 at the longitudinal position of the tank wall 2 is welded with a head plate 21, the welding mode of a base plate 11 is lap joint or butt joint, the shape and the structure of the longitudinal wave 11-11 are the same as those of a transverse wave 11-12, the surface of the tank bottom 1 is welded with the surface of an angle plate 14, a corner protector 13 is welded below the angle plate 14 positioned at the periphery of the tank bottom 1, the corner protector 13 is fixed on the tank wall 2 through bolts and nuts, the corner protector 13 is a high-strength metal piece, the upper part of the corner protector 13 is welded with the bottom of the angle plate 14, the surface of the angle plate 14 is provided with a connecting corrugation 16, two ends of the connecting corrugation are respectively connected with the tank wall 2 and the corrugation of the tank bottom 1, the longitudinal angle of the angle plate 14 is integrally in a 90-degree smooth curved surface shape, the connecting corrugation 16 is attached to the corrugation on the surface of the base plate 11, the connecting corrugation 16 is a longitudinal raised corrugation, the base plate 11 at the circumferential position of the tank wall 2 is butt joint welded through a circumferential angle, the transverse wave is connected with the longitudinal wave when the base plate 11 is welded, the transverse wave or longitudinal wave which is not connected with the tank wall through the corner plate at the outer circumference of the tank bottom and the corrugation on the special-shaped plate are blocked through a head sealing plate 21, and meanwhile, the exposed corrugation on the corner plate is also blocked through the head sealing plate. The irregular plate 12 is cut through the base plate 11 or is directly punched and formed by a die, the angle plate 14, the end sealing plate 21 and the base plate 11 are all metal corrugated plates, the tank bottom 1 is a standard unit and extends around, the position and direction of the standard unit are not limited, the installation starting position and sequence are not limited, products are universal, the products do not need to correspond one to one, all longitudinal waves and transverse waves are curved surface smooth transitional connection, the longitudinal waves and transverse waves are single waves, when the tank is expanded with heat and contracted with cold, all parts can offset deformation caused by temperature change through curvature change, stress concentration caused by deformation is effectively reduced, local yield damage is avoided, and when the tank is manufactured, all thin film plates can be processed only by using a plurality of dies; when assembling, the welding is convenient, a plurality of substrates 11 can be welded together before leaving a factory without being influenced by the environment of an assembly site, the problems that the structure of GTT and IHI is too complex, the processing is very difficult, the stress at the position of a kink is easy to concentrate, the corrugation of KC-1 is large, materials are wasted, the corrugations are connected through a flat plate, longitudinal and transverse corrugations are a group of waves, the stress at the corrugation is easy to concentrate when the tank is expanded with heat and contracted with cold, the structure is complex, and the processing and the detection are difficult are solved, the longitudinal angle of the angle plate 14 is integrally a 90-degree smooth curved surface, the surface of the angle plate 14 is provided with longitudinal raised corrugations attached to the surface corrugation of the substrate 11, the transverse angle of the angle plate 14 is curved, the adjacent angle plates 14 are welded through lapping or butt joint welding, the substrate 11 forming the tank bottom 1 is welded above a metal fixing piece of an anchoring plate 15, eight combination modes are provided for the base unit 11-1, and the angle plate 14 is directly pressed and formed through a mould, the wave and the plate surface are a whole formed at one time, welding is not needed, the sealing performance is good, the tank wall 2 and the tank bottom 1 can be rapidly assembled together by matching with the end sealing plate 21, the quality of a finished product of the metal inner tank is improved, the waveform and the size of longitudinal and transverse waves of the substrate 11 are the same, the cross connection between the longitudinal and transverse waves is curved connection, no kink exists, the wave is not a group of waves, the shape and the structure are the same, when the metal inner tank is contracted in cold, all positions can be uniformly deformed, the curves are connected, local stress concentration can be avoided, a yield failure point is formed, the connection between the longitudinal waves and the transverse waves is in transition through arc-shaped grooves, the transition is more stable, and the overall structural strength of a basic unit can be guaranteed.
And those not described in detail in this specification are well within the skill of the art.
When welding, a plurality of substrates 11 are welded above the metal fixing piece of the anchoring plate 15, standard substrates 11 are adopted for cutting combination, wave crests are connected and turned through the angle plate 14, the angle plate 14 cannot be connected with the wave crests, sealing is carried out through the end sealing plate 21, the substrates 11 and the end sealing plate 21 are all dies with uniform size, the number of dies required for processing is small, the rest parts of the tank bottom 1 (except the edge part of the tank bottom 1) are naturally extended and paved with the standard substrates 11, the direction, the position and the angle are not different, all longitudinal waves and transverse waves are curved surface smooth transitional connection, the longitudinal waves and the transverse waves are single waves, when expanding with heat and contracting with cold, all parts can offset the deformation caused by the change of temperature through the change of curvature, the stress concentration caused by the deformation is effectively reduced, the local yielding damage is avoided, and when manufacturing, all thin film plates can be processed only by using a plurality of dies, when assembling, the welding is convenient, can just weld a plurality of base plates 11 together before leaving the factory, do not receive the influence of equipment site environment, and link together jar wall 2 base plate 11 and tank bottoms 1 base plate 11 through end closure board 21, the scute 14 is the curved plate that has a plurality of ripples through the direct compression moulding of mould, the ripples is a whole with the face, need not weld, sealing performance is good, cooperate end closure board 21 can be quick assemble together jar wall 2 and tank bottoms 1, the finished product quality of jar in the metal has been promoted.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a metal inner tank structure of membrane formula low temperature storage tank which characterized in that: including tank bottoms (1) and tank wall (2), tank wall (2) are formed through base plate (11) welding, tank bottoms (1) are approximate circular structure, and the tank bottoms are by base plate (11) concatenation and by dysmorphism board (12) fill concatenation outlying breach, base plate (11) are a foundation element (11-1) or a plurality of foundation element (11-1) are constituteed, base plate (11) are weld forming or deep drawing shaping or deep-drawing shaping, foundation element (11-1) comprises flat board (11-13), longitudinal wave (11-11) and transverse wave (11-12) on the flat board, longitudinal wave (11-11) and transverse wave (11-12) are the convex domes of one side concave yield, through the smooth transition of curved surface perpendicular staggered connection together between longitudinal wave (11-11) and the transverse wave (11-12), and the longitudinal waves (11-11) and the transverse waves (11-12) are smoothly transited with the flat plates (11-13) at the periphery through curved surfaces; the tank bottom (1) and the tank wall are transited through an angle plate (14) and welded to form a closed barrel-shaped structure; the welding forming mode of the base plate (11) is lap joint or butt joint, the longitudinal wave (11-11) and the transverse wave (11-12) are in the same shape and structure, the basic unit (11-1) is a rectangular plate which is formed by a metal thin plate through mould forming and then cutting and has criss-cross corrugations, the base plate (11) at the circumferential position of the tank wall (2) is in butt joint welding through a circumferential angle, the transverse wave (11-12) is connected with the longitudinal wave (11-11) during welding forming of the base plate (11), one sides corresponding to the tank bottom (1) and the tank wall (2) are both welded with the surface of an angle plate (14), the surface of the angle plate (14) is provided with connecting corrugations (16) of which two ends are respectively connected with the corrugations of the tank wall (2) and the tank bottom (1), the longitudinal angle of the angle plate (14) is integrally in a 90-degree smooth curved surface shape, and the connecting corrugations (16) are attached to the surface of the base plate (11), connect ripple (16) for vertical protruding ripple, scute (14) transverse angle is the curve type, the surface hoop laminating of scute (14) and the surface of angle bead (13), through overlap joint or butt joint welding between adjacent scute (14), be located tank bottoms (1) outlying scute (14) below welding and have angle bead (13) to angle bead (13) are fixed on jar wall (2) through bolt and nut, angle bead (13) are the high strength metalwork, the top of angle bead (13) and the bottom welding of scute (14), dysmorphism board (12) are cut or the mould deep-draw shaping through base plate (11).
2. The metal inner tank structure of a membrane type cryogenic storage tank according to claim 1, wherein: the surface of the angle plate (14) is butt-jointed or lap-welded with the surface of the special-shaped plate (12).
3. The metal inner tank structure of a membrane-type cryogenic storage tank of claim 1, wherein: the angle plate (14), the head sealing plate (21) and the base plate (11) are all metal corrugated plates.
4. The metal inner tank structure of a membrane-type cryogenic storage tank of claim 1, wherein: and a base plate (11) consisting of the tank bottom (1) and the tank wall (2) is welded above the metal fixing piece of the anchoring plate (15).
5. The metal inner tank structure of a membrane-type cryogenic storage tank of claim 1, wherein: the edge of the basic unit (11-1) for lap welding is provided with a folded edge for lap welding, and the folded edge is provided with a 45-degree cutting angle.
6. The metal inner tank structure of a membrane-type cryogenic storage tank of claim 1, wherein: the junction of the longitudinal wave (11-11) and the transverse wave (11-12) is transited through a transition section (11-14), the transition section (11-14) comprises a large end (11-14-1) and a small end (11-14-2), the width and the height of the transition section (11-14) are gradually reduced from the large end (11-14-1) to the small end (11-14-2), the transition section (11-14) extends from one end of the longitudinal wave (11-11) to the lower edge of the transverse wave (11-12) and is connected with the lower edge of the transverse wave (11-12), or the transition section (11-14) extends from one end of the transverse wave (11-12) to the lower edge of the longitudinal wave (11-11) and is connected with the lower edge of the longitudinal wave (11-11).
7. The metal inner tank structure of a membrane type cryogenic storage tank according to claim 1, wherein: still include end plate (21), the corrugated stifled ripples (22) of shutoff are seted up on the surface of end plate (21), stifled ripples (22) one end opening and opening shape can match with the ripple of the longitudinal wave of base plate, transverse wave, dysmorphism board, and the other end and the head version body of stifled ripples pass through the smooth transition of curved surface, the top and the end plate (21) welding of tank wall (2), the end of the longitudinal wave on the base plate of tank wall top passes through the end plate shutoff, tank bottom outer circumference department fails to pass through the end plate shutoff with tank wall through the transverse wave or the longitudinal wave that the scute is connected and the dysmorphism board on the ripple, and simultaneously, the uncovered ripple also passes through the end plate shutoff on the scute.
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| CN202010998587.5A CN112253986B (en) | 2020-09-21 | 2020-09-21 | Metal inner tank structure of membrane type low-temperature storage tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3121196B1 (en) * | 2021-03-24 | 2024-03-15 | Gaztransport Et Technigaz | Liquefied gas storage installation comprising a polygonal supporting structure, and tracing method for the construction of this installation |
| CN116123436B (en) * | 2023-01-16 | 2024-02-09 | 宇欧围护技术(上海)有限公司 | Double-arch straight cornea and double-arch multi-slope peak right angle metal extension film |
| CN117685492B (en) * | 2024-02-01 | 2024-06-11 | 沪东中华造船(集团)有限公司 | Sealing film unit for liquefied gas insulating storage tank, sealing film, processing method and storage tank |
| CN117718755B (en) * | 2024-02-18 | 2024-06-21 | 中太能源科技(上海)有限公司 | Processing system of metal plate |
| CN117847403B (en) * | 2024-03-06 | 2024-06-11 | 沪东中华造船(集团)有限公司 | Land thin film type storage tank |
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| FR2739675A1 (en) * | 1995-10-05 | 1997-04-11 | Gaztransport Et Technigaz | Ground storage tank for low=temperature liquids e.g. liquefied gases |
| JPH10252989A (en) * | 1997-03-10 | 1998-09-22 | Kawasaki Heavy Ind Ltd | Assembly unit membrane panel of membrane inner vessel for low temperature tank, and its manufacture |
| CN2413186Y (en) * | 2000-03-14 | 2001-01-03 | 曹俊东 | Internal floating diaphragm fuel tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2739675A1 (en) * | 1995-10-05 | 1997-04-11 | Gaztransport Et Technigaz | Ground storage tank for low=temperature liquids e.g. liquefied gases |
| JPH10252989A (en) * | 1997-03-10 | 1998-09-22 | Kawasaki Heavy Ind Ltd | Assembly unit membrane panel of membrane inner vessel for low temperature tank, and its manufacture |
| CN2413186Y (en) * | 2000-03-14 | 2001-01-03 | 曹俊东 | Internal floating diaphragm fuel tank |
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Effective date of registration: 20230803 Address after: Building 4, No. 1588 Xinyang Road, Lingang New Area, China (Shanghai) Pilot Free Trade Zone, Pudong New Area, Shanghai, November 2013 Patentee after: Yuou Enclosure Technology (Shanghai) Co.,Ltd. Address before: 314001 Wangdian Town, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG ZHENSHEN INSULATION TECHNOLOGY Corp.,Ltd. |