CN113719173A

CN113719173A - Skin plate connecting structure, net shell for storage tank and storage tank structure

Info

Publication number: CN113719173A
Application number: CN202010450983.4A
Authority: CN
Inventors: 管孝瑞; 马开良; 王洁; 张玉平; 陶彬; 蒲鹤; 郎需庆
Original assignee: China Petroleum and Chemical Corp; Sinopec Qingdao Safety Engineering Institute
Current assignee: China Petroleum and Chemical Corp; Sinopec Qingdao Safety Engineering Institute
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-11-30

Abstract

The invention discloses a skin plate connecting structure, a net shell for a storage tank and a storage tank structure, wherein the skin plate connecting structure comprises a rod piece, a skin plate, a pressing strip and a sealing piece; the rod piece is provided with an accommodating groove along the length direction of the rod piece; the number of the skin plates is two, the rod piece is arranged between the two skin plates, and the opposite edges of the two skin plates respectively extend into the accommodating groove; the batten completely covers a notch of the accommodating groove and applies pressure to the skin plate so that the edge of the skin plate is kept in the accommodating groove; the seal is disposed between the rim of the skin panel and the bead and the seal is fully seated in the receiving groove. The skin plate connecting structure has good sealing performance, and the sealing element is not easy to age.

Description

Skin plate connecting structure, net shell for storage tank and storage tank structure

Technical Field

The invention relates to the technical field of storage tanks for petrochemical engineering, in particular to a skin plate connecting structure, a reticulated shell for a storage tank and a storage tank structure.

Background

At present, the floating plate of the external floating roof type storage tank is exposed in the atmosphere, and the direct sunlight irradiates on the wax oil on the inner wall of the floating plate and the storage tank, so that a large amount of Volatile Organic Compounds (VOCs) are discharged. On the other hand, the oil gas concentration between the floating disc seals of the storage tank exceeds the standard, so that fire accidents caused by lightning striking of the sealing ring occur sometimes, and the floating disc is easy to incline when the rain and snow amount is large. Therefore, the problem can be solved well by additionally arranging the latticed shell above the storage tank.

In the prior art, the latticed shell often has the following problems in the practical application process: the net shell skin plate is independent triangle-shaped structure, and when sealing performance was not good between the skin plate, the easy seepage of rainwater was inside the storage tank, caused certain influence to the floating plate, and current skin plate connection structure's sealing strip and sealed glue take place ageing easily moreover, and sealing performance receives external environment to influence great.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provide a skin plate connecting structure, a net shell for a storage tank and a storage tank structure.

In order to achieve the above object, an aspect of the present invention provides a skin panel connection structure, which includes a bar member, a skin panel, a bead, and a sealing member; the rod piece is provided with an accommodating groove along the length direction of the rod piece; the number of the skin plates is two, the rod piece is arranged between the two skin plates, and the opposite edges of the two skin plates respectively extend into the accommodating groove; the batten completely covers a notch of the accommodating groove and applies pressure to the skin plate so that the edge of the skin plate is kept in the accommodating groove; the seal is disposed between the rim of the skin panel and the bead and the seal is fully seated in the receiving groove.

Optionally, the plane where the notch of the accommodating groove is located is a first plane a; the skin plate comprises a main body plate and the edge connected to the main body plate, and the main body plate is arranged outside the accommodating groove and is positioned on the first plane a; one side of the pressing strip, which is far away from the groove bottom of the accommodating groove, is an upper surface, and the upper surface is located on the first plane a.

Optionally, two opposite lateral walls of the accommodating groove are inclined planes, the main body plate and the edge are arranged at an obtuse angle, and when the main body plate is located on the first plane a, the edge is parallel to the lateral wall of the accommodating groove on the corresponding side.

Optionally, the layering includes roof and sealing support plate, the roof is kept away from one side of the tank bottom of holding tank does the upper surface, sealing support plate sets up deviating from of roof one side of upper surface, sealing support plate with be the angle setting between the roof in order to the sealing member provides installation space.

Optionally, the sealing support plate and be the acute angle setting between the roof, the sealing support plate is kept away from the one end of roof is for can with the border extrusion of skin board is in the extrusion end on the lateral wall of holding tank.

Optionally, an end of the rim away from the main body plate is bent to form a bent end, and the bent end is configured to provide support to the pressing end to prevent the pressing end from moving to the groove bottom of the accommodating groove.

Optionally, a connecting boss is arranged at the bottom of the accommodating groove, a connecting hole is formed in the pressing strip, and the connecting piece penetrates through the connecting hole and the connecting boss to connect the pressing strip to the rod piece.

Optionally, a plurality of connecting bosses are arranged at intervals along the length direction of the rod piece, the distance between the connecting bosses is 12-15 cm, and a plurality of connecting holes in one-to-one correspondence with the connecting bosses are formed in the pressing strip.

Optionally, the connecting piece is a bolt, and the moment when the bolt connects the pressing bar and the rod piece is 15-19 N.m.

Optionally, a gasket is arranged between the bolt and the upper surface of the pressing bar.

Optionally, the pressing bar includes a clamping plate, the clamping plate is vertically disposed on a side of the top plate away from the upper surface, and the clamping plate abuts against an outer side of the connecting boss to limit the movement of the pressing bar along the width direction of the rod.

Optionally, the number of the clamping plates is two, the two clamping plates are arranged at intervals and are respectively abutted against two sides of the connecting boss, and the connecting hole is formed between the two clamping plates.

Optionally, the sealing support plate and the clamping plate are angularly arranged to form a buffer space, and the sealing support plate and/or the clamping plate are elastically deformed towards the buffer space.

Optionally, the horizontal height of the notch of the receiving groove is higher than the horizontal height of the connecting boss so that the upper surfaces of the main body plate and the pressing strip are both in the first plane a.

Optionally, the sealing element is made of ethylene propylene diene monomer, thermoplastic vulcanized elastomer, SEBS or modified PVC.

Optionally, the rod piece is an i-beam, and the accommodating groove is formed in a flange of the i-beam.

Optionally, the web of the i-beam is of a hollow structure.

The invention provides a reticulated shell for a storage tank, which comprises a plurality of gusset plates and a plurality of skin plate connecting structures, wherein rod pieces of the plurality of skin plate connecting structures are connected through the plurality of gusset plates to form a spherical shell structure.

Optionally, six rod pieces are connected to one gusset plate, wherein the six rod pieces are arranged at intervals along the circumferential direction of the gusset plate, and an included angle between two adjacent rod pieces is 60 °.

The invention also provides a storage tank structure which comprises a tank body and the reticulated shell for the storage tank.

Through above-mentioned technical scheme be provided with the holding tank on the member, the holding tank is followed the length direction of member extends, two the border in opposite directions of skin board stretches into respectively in the holding tank, through the layering shelters from completely the notch of holding tank and to the skin board is exerted pressure so that the border of skin board keeps in the holding tank, and, the sealing member sets up completely the skin board the border with between the layering. Since the sealing member is completely located in the receiving groove, the sealing member is not exposed to the external environment, is not affected by solar radiation, animal pecking, etc., is not easily aged, and provides good sealing property.

Drawings

FIG. 1 is a longitudinal sectional view of a skin panel joining structure of the present invention;

FIG. 2 is an exploded schematic view of FIG. 1;

FIG. 3 is a schematic structural view of an embodiment of a reticulated shell for a storage tank in accordance with the present invention;

fig. 4 is an enlarged view of a portion a in fig. 3.

Description of reference numerals:

100-bar, 110-receiving groove, 111-side wall, 112-connecting boss, 120-flange, 130-web, 200-skin panel, 210-body panel, 220-edge, 221-bending end, 300-bead, 310-top panel, 320-sealing support plate, 321-extrusion end, 330-connecting piece, 340-gasket, 350-clamping plate, 400-sealing piece, 500-node plate

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the prior art, the floating plate of the external floating roof type storage tank is exposed in the atmosphere, and the direct sunlight irradiates on the wax oil on the inner wall of the floating plate and the storage tank, which causes the discharge of a large amount of Volatile Organic Compounds (VOCs). On the other hand, the oil gas concentration between the floating disc seals of the storage tank exceeds the standard, so that fire accidents caused by lightning striking of the sealing ring occur sometimes, and the floating disc is easy to incline when the rain and snow amount is large. Therefore, the problem can be well solved by additionally arranging the latticed shell above the storage tank. However, the latticed shell often has the following problems in the practical application process: the sealing performance is poor, rain leakage is easy, and the sealing strip and the sealing glue are easy to age. To this end, the present invention solves the technical problems of the prior art by the following detailed description.

As shown in fig. 1 and 2, the skin panel connection structure of the present invention includes a bar 100, a skin panel 200, a bead 300, and a sealing member 400; the rod 100 is provided with an accommodating groove 110 along the length direction thereof; the number of the skin plates 200 is two, the bar member 100 is arranged between the two skin plates 200, and the opposite edges 220 of the two skin plates 200 respectively extend into the accommodating groove 110; the bead 300 completely covers the notch of the receiving groove 110 and applies pressure to the skin panel 200 to keep the edge 220 of the skin panel 200 in the receiving groove 110; the sealing member 400 is disposed between the rim 220 of the skin panel 200 and the molding bar 300, and the sealing member 400 is completely located in the receiving groove 110.

In the present invention, since the sealing member 400 is completely located in the receiving groove 110, the sealing member 400 is not exposed to the external environment, and thus is not affected by solar radiation, animal pecking, etc., and is not easily aged, providing good sealing property.

In the prior art, there is the difference in height between skin board and the layering, and this kind of difference in height can cause the rainwater to be detained, influences skin board connection structure's reliability. In order to solve this problem, in one embodiment of the present invention, as shown in fig. 1, the plane of the notch of the receiving groove 110 is a first plane a; the skin panel 200 comprises a main body panel 210 and the rim 220 connected to the main body panel 210, the main body panel 210 is disposed outside the receiving groove 110 and substantially located on the first plane a; the side of the depression bar 300 away from the bottom of the receiving groove 110 is an upper surface, and the upper surface is also substantially located on the first plane a. Since the upper surfaces of the main body plate 210 and the molding 300 are substantially located on the first plane a, there is almost no height difference between the main body plate 210 and the upper surface of the molding 300, and rainwater is not retained or collected, thereby ensuring the reliability of the skin plate connection structure.

It should be noted that, as shown in fig. 1, the upper surfaces of the main body plate 210 and the pressing strip 300 only need to be located substantially on the first plane a, that is, the upper surfaces of the main body plate 210 and the pressing strip 300 may be slightly inclined to the first plane a, or the upper surfaces of the main body plate 210 and the pressing strip 300 may be parallel to the first plane a, but the height difference between the two should be kept within a small range, and in short, the upper surfaces of the main body plate 210 and the pressing strip 300 should be arranged such that rainwater does not stay at the connection between the two.

In order to ensure the stability of the skin plate connection structure and prevent the skin plate 200 from breaking or cracking, in an embodiment of the invention, two opposite side walls 111 of the receiving groove 110 are inclined surfaces, the main body plate 210 and the edge 220 are arranged at an obtuse angle, and when the main body plate 210 is located on the first plane a, the edge 220 and the corresponding side wall 111 of the receiving groove 110 are parallel to each other. Because the side wall 111 is arranged in an inclined plane, and the edge 220 is parallel to the side wall 111 on the corresponding side, the edge 220 and the side wall 111 are in surface contact, so that on one hand, friction is increased, the stability of the skin panel 200 is improved, and on the other hand, the pressure of the pressing strip 300 on the edge 220 can be uniformly distributed on the side wall 111, and the edge 220 is prevented from being damaged by shearing force. In this case, the side wall 111 may be configured as a friction surface having a strip-shaped protruding structure, which may further increase the friction between the rim 220 and the side wall 111, and further increase the contact area between the rim 220 and the side wall 111 because the strip-shaped protruding structure is sufficiently contacted with the rim 220, so as to more uniformly disperse the pressure of the molding strip 300 on the rim 220 and reduce the influence of the shearing force on the rim 220.

In the present invention, the sealing member 400 is completely disposed in the receiving groove 110, so that it is not easy to be aged and damaged, and the sealing member 400 should maintain its own stability as much as possible while providing sealing to the molding bar 300 and the skin panel 200, so that it can still provide stable sealing to the molding bar 300 and the skin panel 200 when external vibration occurs. To this end, in one embodiment of the present invention, the pressing bar 300 includes a top plate 310 and a sealing support plate 320, wherein a side of the top plate 310 away from the groove bottom of the receiving groove 110 is the upper surface, the sealing support plate 320 is disposed on a side of the top plate 310 away from the upper surface, and the sealing support plate 320 is disposed at an angle with respect to the top plate 310 to provide a mounting space for the sealing member 400. That is, when the sealing member 400 is placed in the installation space between the sealing support plate 320 and the top plate 310, the sealing member 400 can be restricted from moving by both the sealing support plate 320 and the top plate 310, thereby ensuring stable sealing to the molding bar 300 and the skin panel 200.

In order to enable the bead 300 to fix the edge 220 of the skin panel 200 in the receiving groove 110 of the bar 100 more firmly, optionally, the sealing support plate 320 and the top plate 310 are arranged at an acute angle, and an end of the sealing support plate 320 away from the top plate 310 is a pressing end 321 capable of pressing the edge 220 of the skin panel 200 on the side wall 111 of the receiving groove 110. Since the seal supporting plate 320 is disposed at an acute angle with respect to the top plate 310, the pressing end 321 of the seal supporting plate 320 presses the rim 220 against the sidewall 111 of the receiving groove 110 while the seal supporting plate 320 provides a part of the supporting force to the seal 400, so that the skin sheet 200 is fixed with respect to the bar 100.

In some severe conditions, the pressing end 321 may move downward, that is, the sealing support plate 320 may bend toward the bottom of the receiving groove 110, which may cause the problem that the sealing support plate 320 cannot provide stable support and limit to the sealing element 400, not only the sealing element 400 falls off and the sealing between the pressing strip 300 and the skin panel 200 fails, but also the problem that the skin panel 200 is separated from the bar 100 because the pressing strip 300 cannot provide stable pressing to the edge 220. Therefore, in order to solve the above problem, in an embodiment of the present invention, an end of the rim 220 away from the main body plate 210 is bent to form a bent end 221, and the bent end 221 is configured to provide a support to the pressing end 321 to prevent the pressing end 321 from moving to the bottom of the receiving groove 110. The pressing end 321 is restricted from moving toward the bottom of the receiving groove 110 by the bent end 221, so that the seal supporting plate 320 is not bent toward the bottom of the receiving groove 110, and the stability of the seal 400 and the stability of the connection between the skin plate 200 and the rod member 100 are ensured.

In addition, as shown in fig. 2, the sectional shape of the installation space between the seal carrier 320 and the top plate 310 may be set as: the sealing member 400 has a circular head region and a tail region communicating with the head region, the head region is closer to the top plate 310 than the tail region, the width of the communication portion between the head region and the tail region is smaller than the diameter of the head region, and the cross-sectional shape of the sealing member 400 corresponds to the cross-sectional shape of the installation space, so that when the head structure of the sealing member 400 extends into the head region of the installation space, the head structure of the sealing member 400 is difficult to withdraw from the communication portion, which further ensures that the sealing member 400 does not fall off. Moreover, the heat transferred after the top plate 310 is subjected to heat radiation such as the sun is firstly transferred to the head structure of the sealing member 400, and the cross section of the head structure is also circular, so that the head structure can uniformly transfer the heat to the periphery, and can not cause a certain part to be overheated and softened, and meanwhile, all parts of the bead 300 are basically uniformly heated, thereby prolonging the service life of the bead 300.

It should be understood that the bead 300 can press the skin panel 200 against the bar 100 in a variety of ways, for example, after the sealing blade 320 of the bead 300 presses the edge 220 of the skin panel 200, the bead 300 can be snapped into the bar 100 using a snap to prevent the skin panel 200 from being detached from the bar 100. In an embodiment of the present invention, a connection boss 112 is disposed at a bottom of the receiving groove 110, a connection hole is opened in the molding 300, and a connection member 330 passes through the connection hole and the connection boss 112 to connect the molding 300 to the rod 100. That is, the bead 300 is coupled to the bar 100 by the coupling member 330, thereby pressing the skin sheet 200 against the bar 100.

In order to ensure that the edge 220 can be reliably extruded on the side wall 111 and the sealing performance of the sealing element 400 is ensured, optionally, a plurality of connecting bosses 112 are arranged at intervals along the length direction of the rod 100, the distance between the connecting bosses 112 is 12-15 cm, and the pressing strip 300 is provided with a plurality of connecting holes corresponding to the connecting bosses 112 one to one. In this way, the pressing force of the bead 300 against the rim 220 is uniformly distributed along the length direction of the lever 100, so that the rim 220 is reliably pressed against the sidewall 111, and the seal 400 can be uniformly supported to provide reliable sealability.

It should be understood that the connecting member 330 may be a connecting structure in various forms, and in one embodiment of the present invention, the connecting member 330 is a bolt. It should be noted that poor construction of the bolts may affect the sealing performance between the bead 300 and the skin panel 200, that is, different portions of the sealing member 400 under the bead 300 may be tilted, thereby resulting in poor sealing, and therefore, the moment when the bolts connect the bead 300 and the bar member 100 is preferably 15-19 n.m.

In addition, in order to prevent the bolt from being loosened, a spacer 340 is further disposed between the bolt and the upper surface of the bead 300.

When the molding bar 300 is coupled to the rod 100, it is undesirable that the molding bar 300 moves in the width direction of the rod 100, and therefore, in an embodiment of the present invention, the molding bar 300 includes an engaging plate 350, the engaging plate 350 is vertically disposed on a side of the top plate 310 facing away from the upper surface, and the engaging plate 350 abuts against the outer side of the coupling boss 112 to restrict the movement of the molding bar 300 in the width direction of the rod 100.

Specifically, the number of the clamping plates 350 is two, the two clamping plates 350 are arranged at intervals and respectively abut against two sides of the connecting boss 112, and the connecting hole is arranged between the two clamping plates 350. The two clamping plates 350 can not only prevent the pressing bar 300 from moving along the width direction of the rod 100, but also play a role in positioning: as long as the connecting boss 112 extends between the two clamping plates 350, which means that the pressing strip 300 is installed in place, the connecting boss can be directly connected through the connecting piece 330, and the installation efficiency of the pressing strip 300 is greatly improved.

In order to ensure the service life of the seal carrier 320 and the card 350, in one embodiment of the present invention, the seal carrier 320 and the card 350 are disposed at an angle to form a buffer space, and both the seal carrier 320 and the card 350 are disposed to be elastically deformable toward the buffer space. That is, since the buffer space is formed between the seal carrier 320 and the clamping plate 350, when the seal carrier 320 is affected by the edge 220 of the skin panel 200, the seal carrier 320 can be properly deformed toward the buffer space, so as to buffer and release the external force applied thereto. When the card 350 is affected by the connection boss 112, the card 350 may be deformed to the buffer space, so as to buffer and release the external force. If there is no buffer space between the seal carrier 320 and the card 350, the seal carrier 320 or the card 350 will be affected by the edge 220 and the connecting boss 112, and if the processing quality cannot be controlled, for example, the edge-raising angle of the skin panel 200 is not proper, the stress on the seal carrier 320 and the card 350 will be affected, and the service life of the two will be reduced.

In order to ensure that the upper surfaces of the main body plate 210 and the compression bead 300 are in the first plane a, optionally, the notch of the receiving groove 110 has a higher level than the connecting boss 112, so that the upper surfaces of the main body plate 210 and the compression bead 300 are in the first plane a when the compression bead 300 is connected to the lever 100.

It should be understood that the material of the sealing member 400 may be selected, for example, the sealing member 400 may be made of any one or more of epdm, tpe, SEBS, or modified PVC.

It should be understood that the rod 100 may take various structures, and in one embodiment of the present invention, the rod 100 is configured as an i-beam structure and the receiving groove 110 is disposed on the flange 120 of the i-beam in order to increase the strength of the rod 100.

In order to make the skin panel connection structure have a light weight as a whole, the web 130 of the i-beam is optionally a hollow structure.

As shown in fig. 3 and 4, the present invention also provides a lattice shell for a storage tank, which includes a plurality of gusset plates 500 and a plurality of the above-mentioned skin plate connection structures, wherein the rod members 100 of the plurality of skin plate connection structures are connected by the plurality of gusset plates 500 to form a spherical shell structure.

It should be understood that there may be a plurality of connection manners for the bars 100 and the gusset plates 500 of the skin plate connection structure, and in an embodiment of the present invention, six bars 100 are connected to one gusset plate 500, wherein the six bars 100 are arranged at intervals along the circumferential direction of the gusset plate 500, and the included angle between two adjacent bars 100 is 60 °.

Compared with the prior art, the advantages of the reticulated shell for the storage tank, the storage tank structure and the skin plate connecting structure are the same, and are not described again.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications may be made to the technical solution of the invention, and in order to avoid unnecessary repetition, various possible combinations of the invention will not be described further. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. A skin panel connection structure, comprising a bar member (100), a skin panel (200), a bead (300), and a sealing member (400);

the rod piece (100) is provided with an accommodating groove (110) along the length direction of the rod piece;

the number of the skin plates (200) is two, the rod piece (100) is arranged between the two skin plates (200), and the opposite edges (220) of the two skin plates (200) respectively extend into the accommodating groove (110);

the bead (300) completely blocks the notch of the receiving groove (110) and applies pressure to the skin panel (200) to keep the edge (220) of the skin panel (200) in the receiving groove (110);

the seal (400) is disposed between the rim (220) of the skin panel (200) and the bead (300), and the seal (400) is located entirely within the receiving groove (110).

2. Skin plate connection according to claim 1, characterized in that the plane of the notch of the receiving groove (110) is a first plane a; the skin plate (200) comprises a main body plate (210) and the edge (220) connected to the main body plate (210), wherein the main body plate (210) is arranged outside the accommodating groove (110) and is positioned on the first plane a; one side of the pressing strip (300) far away from the groove bottom of the accommodating groove (110) is an upper surface, and the upper surface is located on the first plane a.

3. The skin panel connection structure according to claim 2, wherein the two opposite side walls (111) of the receiving groove (110) are inclined surfaces, the main body panel (210) is disposed at an obtuse angle with respect to the edge (220), and the edge (220) is parallel to the side wall (111) of the receiving groove (110) on the corresponding side when the main body panel (210) is located on the first plane a.

4. The skin panel connection structure of claim 3, wherein the bead (300) comprises a top plate (310) and a sealing support plate (320), wherein the side of the top plate (310) away from the bottom of the receiving groove (110) is the upper surface, the sealing support plate (320) is disposed on the side of the top plate (310) away from the upper surface, and the sealing support plate (320) is disposed at an angle with the top plate (310) to provide a mounting space for the sealing member (400).

5. Skin plate connection according to claim 4, characterized in that the sealing support plate (320) is arranged at an acute angle to the top plate (310), and the end of the sealing support plate (320) remote from the top plate (310) is a pressing end (321) capable of pressing the edge (220) of the skin plate (200) against the side wall (111) of the receiving groove (110).

6. Skin panel connection according to claim 5, characterized in that the end of the rim (220) remote from the main body panel (210) is bent to form a bent end (221), the bent end (221) being configured to provide support to the pressing end (321) to prevent the pressing end (321) from moving towards the bottom of the groove of the receiving groove (110).

7. The skin plate connecting structure according to claim 4, wherein a connecting boss (112) is provided at the bottom of the receiving groove (110), the molding (300) is provided with a connecting hole, and a connecting member (330) passes through the connecting hole and the connecting boss (112) to connect the molding (300) to the bar (100).

8. The skin plate connecting structure according to claim 7, wherein a plurality of connecting bosses (112) are arranged at intervals along the length direction of the bar member (100), the distance between the connecting bosses (112) is 12-15 cm, and a plurality of connecting holes corresponding to the connecting bosses (112) one to one are formed in the pressing bar (300).

9. The skin panel connection structure according to claim 7, wherein the connection member (330) is a bolt, and the moment when the bolt connects the bead (300) and the bar member (100) is 15 to 19 N.m.

10. A skin panel connection according to claim 9, wherein a spacer (340) is provided between the bolt and the upper surface of the bead (300).

11. Skin plate connection according to claim 7, wherein the bead (300) comprises a catch plate (350), the catch plate (350) being arranged perpendicularly on the side of the top plate (310) facing away from the upper surface, the catch plate (350) abutting against the outer side of the connection boss (112) to limit the movement of the bead (300) in the width direction of the bar (100).

12. The skin panel connection structure according to claim 11, wherein the number of the fastening plates (350) is two, two fastening plates (350) are spaced apart and abut against both sides of the connection boss (112), respectively, and the connection hole is provided between the two fastening plates (350).

13. Skin plate connection according to claim 11, wherein the sealing carrier (320) and the clamping plate (350) are arranged at an angle to form a buffer space, the sealing carrier (320) and/or the clamping plate (350) being arranged to be elastically deformable towards the buffer space.

14. The skin panel attachment structure of claim 7, wherein the notch of the receiving groove (110) has a higher level than the level of the attachment boss (112) so that the upper surfaces of the main body panel (210) and the bead (300) are in the first plane a.

15. Skin plate connection according to claim 1, wherein the sealing element (400) is of ethylene propylene diene monomer, thermoplastic vulcanizate, SEBS or modified PVC.

16. A skin panel attachment structure according to any one of claims 1-15, wherein said bar (100) is an i-beam and said receiving groove (110) is provided on a flange (120) of said i-beam.

17. A skin panel connection according to claim 16, wherein the web (130) of the i-beam is of hollow construction.

18. A shell net for a storage tank, characterized in that the shell net comprises a plurality of gusset plates (500) and a plurality of skin plate connecting structures as claimed in any one of claims 1 to 17, wherein the rod members (100) of the plurality of skin plate connecting structures are connected by the plurality of gusset plates (500) to form a spherical shell structure.

19. The lattice shell according to claim 18, characterized in that six of said bars (100) are connected to one of said gusset plates (500), wherein six of said bars (100) are arranged at intervals along a circumference of said gusset plate (500), and an included angle between two adjacent bars (100) is 60 °.

20. A tank construction, characterized in that it comprises a tank body and a reticulated shell for tanks according to claim 18 or 19.