Storage tank

Abstract

A foundation structure in a tank top comprises a spherical shell and a plurality of radial beams arranged on the protruding side of the spherical shell, the spherical shell comprises a plurality of tank top plates which are sequentially welded in a sealed mode in the circumferential direction, and the radial beams are welded to the tank top plates in a one-to-one correspondence mode. The foundation structure does not need to be completed above the tank wall, and the construction difficulty is reduced. The tank top further comprises a plurality of annular beams distributed in the circumferential direction of the spherical shell, and the two ends of each annular beam are welded to the two corresponding adjacent radial beams correspondingly. The two axial ends of the annular plate are welded to the sunken side of the tank wall and the sunken side of the spherical shell in a sealed mode respectively, the annular plate is located between the spherical shell and the tank wall, the annular plate can be welded to one end of the tank wall firstly, then the foundation structure prefabricated into a whole is hoisted and then connected to the annular plate, and the construction difficulty is reduced; the strength is guaranteed, the storage tank structure and the preparation process are simple, the construction difficulty and the preparation cost are low, and the technical problems that the storage tank top is large in construction difficulty and high in preparation cost are solved to a certain extent.

Description

Technical Field

[0001] The present application belongs to the technical field of storage tanks, and in particular relates to a storage tank. Background Art

[0002] A dome tank is a steel container with a spherical crown and a cylindrical tank body. It is widely used because of its simple manufacturing and low cost. When a dome tank is in use, if the material is frequently replaced, some of the material may accumulate in the dead zone of the rib plate on the top of the dome tank. The material in the dead zone is also difficult to clean, which may cause safety problems such as material contamination and self-polymerization and crystallization.

[0003] At present, under the premise of ensuring the strength of the tank roof, the ribs connected to the inner wall of the tank roof are reduced or removed to reduce the possibility of material accumulation in the dead zone generated by the ribs, which may cause material pollution or material self-aggregation and affect the safety of the tank. However, most of the processing of the tank roof of this arched tank needs to be carried out on the tank wall of the arched tank, which is difficult to construct at high altitude and has high preparation costs. Utility Model Content

[0004] The present application aims to at least to some extent solve the technical problems of difficult construction and high preparation cost of the tank roof. To this end, the present application provides a storage tank.

[0005] The embodiment of the present application provides a storage tank, comprising a tank wall, a tank bottom and a tank top that close both ends of the tank wall, wherein the tank top comprises:

[0006] A spherical shell, the spherical shell comprising a circular plate and a plurality of tank top plates sealed and welded around the circular plate;

[0007] A radial beam provided on the convex side of the spherical shell, wherein the radial beam is welded to the tank top plate in a one-to-one correspondence;

[0008] A plurality of circumferential beams are distributed along the circumference of the spherical shell, and two ends of the circumferential beams are respectively welded to two adjacent radial beams;

[0009] An annular plate, the two axial ends of which are respectively sealed and welded to the tank wall and the concave side of the spherical shell, and the annular plate is also welded to the radial beam through a first pad;

[0010] The center ring is coaxially welded to the circular plate and the outer peripheral wall is welded to the radial beam through a second pad.

[0011] In some or certain embodiments, a plurality of the tank top plates are stacked and overlapped in sequence end to end along the circumference of the circular plate.

[0012] In some or certain embodiments, a chamfer is provided at one end of the inner circumferential wall of the annular plate away from the spherical shell, and a sealing weld between the inner circumferential wall and the spherical shell smoothly transitions to the chamfer.

[0013] In some or certain embodiments, one end of the radial beam is a connecting end extending out of the spherical shell and opposite to the annular plate, and the first pad is located between the connecting end and the annular plate, and is connected to the connecting end, the annular plate and the spherical shell.

[0014] In some or certain embodiments, the tank wall includes a cylindrical body, and the end surface of the connecting end is parallel to the axis of the cylindrical body.

[0015] In some or certain embodiments, the radial beam is a T-beam, the web of the T-beam is welded to the tank top plate, and the two side flanges of the T-beam are respectively welded to two adjacent circumferential beams.

[0016] In some or certain embodiments, the annular beam is a T-shaped steel, the annular beam is welded to the web of the T-shaped beam and the flange on one side of the T-shaped beam, and the T-shaped steel is flush with the T-shaped beam.

[0017] In some or certain embodiments, the annular beam is an angle steel welded to the flange of the T-beam, and the T-beam is located between the annular beam and the spherical shell.

[0018] In some or certain embodiments, the central ring is provided with a plurality of drainage holes distributed along its circumference.

[0019] In some or certain embodiments, the tank top further comprises:

[0020] At least one pressure relief manhole is provided on the spherical shell and is connected to the recessed side.

[0021] Advantageous effects provided by one or more embodiments of the present application:

[0022] The tank wall and the tank bottom and tank top at both ends of the closed tank wall can complete the basic functions of the storage tank. The spherical shell in the tank top of the storage tank plays the basic support and pressure-bearing functions. The spherical shell includes a circular plate and multiple tank top plates sealed and welded around the circular plate. The radial beams are arranged on the convex side of the spherical shell, and the multiple radial beams are welded to the tank top plate one by one. During the preparation of the spherical shell, the radial beams can be welded to the corresponding tank top plates on the ground, and then the multiple tank top plates can be overlapped and sealed and welded in sequence along the circumferential direction to form an annular basic structure. It does not need to be completed above the tank wall, reducing the construction difficulty. The tank top also includes multiple circumferential beams distributed along the circumference of the spherical shell, and the two ends of each circumferential beam are respectively welded to two adjacent radial beams. The circumferential beams can cooperate with the radial beams to increase the stability of the overall tank top. The two axial ends of the annular plate are respectively sealed and welded to the tank wall and the concave side of the spherical shell. The annular plate is located between the spherical shell and the tank wall. The annular plate can be welded to one end of the tank wall first, and then the prefabricated basic structure is hoisted and connected to the annular plate to reduce the difficulty of high-altitude construction. The annular plate is also welded to the radial beam through the first pad, and the center ring is coaxially welded to the circular plate and the outer peripheral wall and the radial beam are welded through the second pad. The annular plate, the circular plate and the center ring on the circular plate effectively strengthen the radial strength and stability of the basic structure. The strength, stability and reliability of the tank top obtained by the overall welding can also be guaranteed. There is no rib on the concave side of the spherical shell, so there will be no dead zone caused by the rib. The connection between the tank top plates is sealed welding, and there will be no gap between the tank top plates to cause material accumulation or self-aggregation. The safety and strength of the storage tank are high, and the structure and preparation process are relatively simple. The construction difficulty and preparation cost are not high. To a certain extent, it solves the technical problems of difficulty in construction and high preparation cost of the tank top. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A simplified structural schematic diagram of a storage tank in some embodiments or certain embodiments of the present application is shown.

[0025] Figure 2 A schematic structural diagram of a tank top in some embodiments or certain embodiments of the present application is shown.

[0026] Figure 3 A schematic diagram of the assembly process of a tank top in some embodiments or certain embodiments of the present application is shown.

[0027] Figure 4A top view of a tank top plate in some embodiments or certain embodiments of the present application is shown.

[0028] Figure 5 A schematic diagram of the partial structure of a spherical shell in some embodiments or certain embodiments of the present application is shown.

[0029] Figure 6 A schematic diagram of the overlapping condition of a tank top plate in some embodiments or certain embodiments of the present application is shown.

[0030] Figure 7 A schematic diagram of the connection between a tank top and a tank wall in some embodiments or certain embodiments of the present application is shown.

[0031] Figure 8 A top view of a connection between a tank top and a tank wall in some embodiments or certain embodiments of the present application is shown.

[0032] Fig. 9 A schematic diagram of the connection of a circumferential beam in some embodiments or certain embodiments of the present application is shown.

[0033] Fig.10 A top view of a connection of a circumferential beam in some embodiments or certain embodiments of the present application is shown.

[0034] Fig.11 A schematic diagram of the connection of another type of annular beam in some embodiments or certain embodiments of the present application is shown.

[0035] Fig.12 Some embodiments or some embodiments of the present application are shown Fig.11 A-direction view.

[0036] Fig.13 A schematic diagram of the connection between a center ring and a radial beam in some embodiments or certain embodiments of the present application is shown.

[0037] Fig.14 A schematic diagram of the connection between a center ring and a spherical shell in some embodiments or certain embodiments of the present application is shown.

[0038] Explanation of the accompanying drawings: 1. tank wall; 2. tank top; 21. spherical shell; 211. circular plate; 212. tank top plate; 213. convex side; 214. concave side; 22. radial beam; 221. connecting end; 222. web; 223. flange; 23. annular beam; 24. annular plate; 241. chamfer; 25. center ring; 251. drainage hole; 26. first pad; 27. second pad; 28. sealing weld; 29. ​​flexibly adjustable weld; 30. reinforcing angle steel; 31. pressure relief manhole. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0043] The present application will be described below with reference to the accompanying drawings:

[0044] Figure 1 A simplified structural schematic diagram of a storage tank in some embodiments or certain embodiments of the present application is shown. Figure 2 It shows a schematic diagram of the structure of a tank top in some embodiments or certain embodiments of the present application, Figure 3 A schematic diagram of the assembly process of a tank top in some embodiments or certain embodiments of the present application is shown, combined with Figure 1 to Figure 3 The embodiment of the present application provides a storage tank, including a tank wall 1, a tank bottom (not shown in the figure) and a tank top 2 that closes both ends of the tank wall 1, and the tank top 2 includes:

[0045] The spherical shell 21 includes a circular plate 211 and a plurality of tank top plates 212 sealed and welded around the circular plate 211 .

[0046] The radial beams 22 are disposed on the convex side 213 of the spherical shell 21 , and the radial beams 22 are welded to the tank top plate 212 in a one-to-one correspondence.

[0047] A plurality of circumferential beams 23 are distributed along the circumference of the spherical shell 21 , and two ends of the circumferential beams 23 are respectively welded to two adjacent radial beams 22 .

[0048] The annular plate 24 has two axial ends sealed and welded to the tank wall 1 and the recessed side 214 of the spherical shell 21 , respectively. The annular plate 24 is also welded to the radial beam 22 via a first pad 26 .

[0049] The center ring 25 is coaxially welded to the circular plate 211 , and the outer peripheral wall is welded to the radial beam 22 via a second pad 27 .

[0050] The tank wall 1 and the tank bottom and tank top 2 at both ends of the closed tank wall 1 can complete the basic functions of the storage tank. The spherical shell 21 in the tank top 2 of the storage tank plays a basic support and pressure-bearing function. The spherical shell 21 includes a circular plate 211 and a plurality of tank top 2 plates sealed and welded around the circular plate 211. The radial beam 22 is arranged on the convex side 213 of the spherical shell 21, and the plurality of radial beams 22 are welded to the tank top 2 plates one by one. In the preparation process of the spherical shell 21, the radial beam 22 can be welded to the corresponding tank top 2 plate on the ground, and then the plurality of tank top 2 plates can be overlapped and sealed and welded in sequence along the circumferential direction to form an annular basic structure, which does not need to be completed above the tank wall 1, reducing the construction difficulty. The tank top 2 also includes a plurality of circumferential beams 23 distributed along the circumference of the spherical shell 21, and the two ends of each circumferential beam 23 are respectively welded to two adjacent radial beams 22. The circumferential beam 23 can improve the strength of the radial beam 22, and cooperate with the radial beam 22 to increase the stability of the overall tank top 2. The axial ends of the annular plate 24 are respectively sealed and welded to the tank wall 1 and the recessed side 214 of the spherical shell 21, and the annular plate 24 is located between the spherical shell 21 and the tank wall 1. The annular plate 24 can be welded to one end of the tank wall 1 first, and then the prefabricated basic structure can be hoisted and connected to the annular plate 24 to reduce the difficulty of high-altitude construction. The annular plate 24 is also welded to the radial beam 22 through a first pad 26, and cooperates with the center ring 25 coaxially welded to the circular plate 211 and the outer peripheral wall and the radial beam 22 are welded through a second pad 27. The annular plate 24, the circular plate 211 and the center ring 25 on the circular plate 211 effectively strengthen the radial strength of the basic structure on both sides, and the strength, stability and reliability of the tank top 2 obtained by the overall welding can also be guaranteed. If there is no rib on the recessed side 214 of the spherical shell 21, there will be no dead zone caused by the rib. The connection between the two plates of the tank top is sealed and welded. There will be no gap between the two plates of the tank top to cause material accumulation or self-aggregation. The storage tank has high safety, stability and strength, and the structure and preparation process are relatively simple, and the construction difficulty and preparation cost are not high, which to a certain extent solves the technical problems of the difficult construction and high preparation cost of the storage tank top 2.

[0051] It should be noted that the spherical shell 21 is the tank top 2 structure of the dome storage tank, which is a structure similar to a concave mirror. The convex side 213 and the concave side 214 of the spherical shell 21 can be respectively analogous to the convex side 213 and the concave side 214 of the concave mirror. The spherical shell 21 is formed by overlapping a plurality of tank top plates 212 in sequence. The welds between the tank top plates 212 are sealed welds 28 formed by sealing welding. The existence and filling of the sealed welds 28 can reduce the possibility of gaps and dead zones appearing on the concave side 214 of the spherical shell 21, and can also be cleaned more completely. Therefore, the possibility of material accumulation pollution and material self-aggregation can also be reduced, and the reliability of the storage tank is improved. In this application, the welds on the side of the tank top plate 212 close to the tank wall 1 are all sealed welds 28, and the welds on the side of the tank top plate 212 away from the tank wall 1 are all flexibly adjustable welds. The sealed welds 28 are uniformly marked as 27 in the relevant drawings, and the flexibly adjustable welds are uniformly marked as 29 in the relevant drawings.

[0052] refer to Figure 3 It can be seen that the center ring 25 can be hoisted together with the circular plate 211 to the integrally formed tank top plate 212 for welding. The preparation is relatively simple.

[0053] Figure 4 A top view of a tank top plate in some embodiments or certain embodiments of the present application is shown. Figure 4 It can be seen that the tank top plate 212 can be fan-shaped when viewed from above, so multiple tank top plates 212 are overlapped and connected along the circumferential direction to obtain an annular structure that can cooperate with the circular plate 211.

[0054] Figure 5 A partial structural schematic diagram of a spherical shell in some embodiments or certain embodiments of the present application is shown. Figure 6 FIG. 1 shows a schematic diagram of a tank top plate overlap in some embodiments or certain embodiments of the present application, with reference to FIG. Figure 5 and Figure 6 In some or certain embodiments, a plurality of tank top plates 212 are stacked and overlapped in sequence along the circumference of the circular plate 2114 , end to end.

[0055] The matching method of multiple tank top plates 212 is as described above. The strength of the spherical shell 21 is good, and the preparation method is relatively simple, which facilitates the overlapping and lap welding of the spherical shell 21 on the ground, which is beneficial to ensure the strength of the spherical shell 21 while reducing the overall construction difficulty of the storage tank.

[0056] In some or certain embodiments, the plurality of tank top plates 212 of the spherical shell 21 may also be prepared by alternately overlapping and welding the top plates 212 up and down, and finally matched with the circular plate 211 to obtain the spherical shell 21.

[0057] In some or certain embodiments, after a plurality of tank top plates 212 in fan-shaped unfolded views are processed into a spherical shell shape, when the spherical shell 21 is obtained by sequentially lap welding, the central part of the spherical shell 21 can be connected to the parts close to the center of the circle of a plurality of tank top plates 212 by sealing welding, and the sealing weld 28 has a smooth transition. The sealing weld 28 can also be polished between the peripheral wall of the spherical shell 21 and the annular plate 24 to achieve a smooth transition between the tank top plate 212 and the annular plate 24 of the spherical shell 21.

[0058] Figure 7 A schematic diagram of the connection between a tank top and a tank wall in some embodiments or certain embodiments of the present application is shown. Figure 8 A top view of a connection between a tank top and a tank wall in some embodiments or certain embodiments of the present application is shown. Figure 7 and Figure 8 In some or certain embodiments, a chamfer 241 is provided at one end of the inner circumferential wall of the annular plate 24 away from the spherical shell 21 , and a sealing weld 28 between the inner circumferential wall and the spherical shell 21 smoothly transitions to the chamfer 241 .

[0059] A chamfer 241 is provided at one end of the inner circumferential wall of the annular plate 24 away from the spherical shell 21, and the sealing weld 28 between the inner circumferential wall and the spherical shell 21 and the chamfer 241 have a smooth transition, which can make the inner wall of the tank top 2 obtained finally smoother and easier to clean, and can also reduce the possibility of material accumulation and material contamination, which is beneficial to improving the safety of the storage tank.

[0060] In some or certain embodiments, one end of the radial beam 22 is a connecting end 221 extending from the spherical shell 21 and opposite to the annular plate 24 , and the first pad 26 is located between the connecting end 221 and the annular plate 24 , and is connected to the connecting end 221 , the annular plate 24 and the spherical shell 21 .

[0061] The radial beam 22 is provided with a connection end 221 extending from the spherical shell 21 and opposite to the annular plate 24. This treatment can release a certain stress in the tank top 2 during the welding process of the tank top 2, thereby improving the strength and use safety of the tank top 2 finally obtained. The first pad 26 is located between the connection end 221 and the annular plate 24, and is connected to the connection end 221, the annular plate 24 and the spherical shell 21, and can also improve the connection strength between the annular plate 24 and the spherical shell 21.

[0062] In some or certain embodiments, the tank wall 1 includes a cylindrical body, and the end surface of the connecting end 221 is parallel to the axis of the cylindrical body. The obtained storage tank has a higher overall strength and better quality.

[0063] In some or certain embodiments, the radius of curvature of the spherical surface of the spherical shell 21 may be 0.8 to 1.2 times the diameter of the tank wall 1. The tank top 2 has better pressure bearing and use effects.

[0064] In some or certain embodiments, the radial beam 22 is a T-beam, the web 222 of the T-beam is welded to the tank top plate 212, and the two side flanges 223 of the T-beam are respectively welded to two adjacent circumferential beams 23.

[0065] The radial beam 22 is a T-beam. After the web 222 of the T-beam is welded to the tank top plate 212, the tank top plate 212 and the T-beam are equivalent to an I-beam structure. This combined structure can make full use of the tank top plate 212 as a force-bearing auxiliary component to achieve lightweight radial beam 22, reduce the weight of the net top, and reduce investment. It is lighter and reduces investment than the existing technology.

[0066] In some or certain embodiments, the radial beams 22 are welded to the tank top plate 212 along the radial direction of the spherical shell 21. When the top view of the tank top plate 212 is fan-shaped, each tank top plate 212 can be welded to the tank top plate 212 in the middle of the span. The distance between two adjacent radial beams 22 can be less than two meters, and the number of tank top plates 212 and radial beams 22 in the tank top 2 can be multiples of 4. While the preparation cost is low, the overall strength of the tank top 2 is high.

[0067] In some or certain embodiments, the radial beam 22 can be integrally formed or obtained by continuous welding of flat steel. Double-sided intermittent welding can be used between the radial beam 22 and the tank top plate 212 to form multiple spaced welds, which can ensure strength and reduce construction difficulty.

[0068] It should be noted that, since the radial beam 22 is located on the convex side 213 of the spherical shell 21, intermittent welding is used between the radial beam 22 and the tank top plate 212, which will not affect the materials in the storage tank.

[0069] Fig. 9 A schematic diagram of the connection of a circumferential beam in some embodiments or certain embodiments of the present application is shown. Fig.10 A top view of a connection of a circumferential beam in some embodiments or certain embodiments of the present application is shown. Fig. 9 and Fig.10 In some or certain embodiments, the annular beam 23 is a T-shaped steel, the annular beam is welded to the web 222 of the T-shaped beam and a side flange 223 of the T-shaped beam, and the T-shaped steel is flush with the T-shaped beam.

[0070] The solution that the annular beam 23 of T-shaped steel is flush with the upper surface of the reinforcing rib can be used when the tank top 2 needs to be insulated. The upper surface is flush, reducing the thickness of the insulation of the tank top 2, and can also avoid the annular beam 23 being too high and exceeding the outer surface of the insulation, resulting in the inability to insulate. The annular beam 23 is flush with the upper surface of the reinforcing rib, which can also reduce the possibility of water accumulation on the tank top 2. While ensuring strength, it can also improve the versatility of the storage tank.

[0071] Fig.11 A schematic diagram of the connection of another type of annular beam in some embodiments or certain embodiments of the present application is shown. Fig.12 Some embodiments or some embodiments of the present application are shown Fig.11 A-direction view. Fig.11 and Fig.12 In some or certain embodiments, the annular beam 23 is an angle steel welded to the flange 223 of the T-beam, and the T-beam is located between the annular beam 23 and the spherical shell 21. This connection method is simple and can effectively increase the strength of the tank top 2 and improve the applicability of the storage tank.

[0072] Fig.13 A schematic diagram of the connection between a central ring and a radial beam in some embodiments or certain embodiments of the present application is shown. Fig.13 In some or certain embodiments, the outer peripheral wall of the center ring 25 can be connected to the corresponding radial beam 22 through a second pad. The center ring 25 and the annular plate 24 position and connect the two ends of the radial beam 22 in the length direction, which is beneficial to improve the overall strength of the tank top 2.

[0073] Fig.14 A schematic diagram of the connection between a center ring and a spherical shell in some embodiments or certain embodiments of the present application is shown, with reference to Fig.14 The tank top 2 of the storage tank may further include a reinforcing angle steel 30, which may be located in the center ring 25 and connected to the inner peripheral wall of the center ring 25 and the side of the tank top plate 212 away from the tank wall 1. This can further increase the strength of the tank top 2 and improve the applicability of the storage tank.

[0074] In some or certain embodiments, the center ring 25 is provided with a plurality of drainage holes 251 distributed along its circumference. The drainage holes 251 can reduce the probability of water accumulation in the center ring 25 and improve the reliability of the tank top 2.

[0075] In some or certain embodiments, the tank top 2 further comprises:

[0076] At least one pressure relief manhole 31 is disposed on the spherical shell 21 and communicated with the recessed side 214 .

[0077] A pressure relief manhole 31 is added to the tank top 2. When the pressure in the storage tank is too high, the pressure in the storage tank can be released through the pressure relief manhole 31, thereby improving the safety of the storage tank.

[0078] In some or certain embodiments, the pressure relief manhole 31 of the tank top 2 can be provided with one or two manholes, etc. The safety is better.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0080] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0081] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A storage tank, characterized in that: It includes a tank wall, a tank bottom and a tank top that close both ends of the tank wall, and the tank top includes: A spherical shell, the spherical shell comprising a circular plate and a plurality of tank top plates sealed and welded around the circular plate; A radial beam provided on the convex side of the spherical shell, wherein the radial beam is welded to the tank top plate in a one-to-one correspondence; A plurality of circumferential beams are distributed along the circumference of the spherical shell, and two ends of the circumferential beams are respectively welded to two adjacent radial beams; An annular plate, the two axial ends of which are respectively sealed and welded to the tank wall and the concave side of the spherical shell, and the annular plate is also welded to the radial beam through a first pad; The center ring is coaxially welded to the circular plate and the outer peripheral wall is welded to the radial beam through a second pad.

2. The storage tank according to claim 1, characterized in that: The plurality of tank top plates are stacked and overlapped in sequence along the circumferential direction of the circular plate, end to end.

3. The storage tank according to claim 1, characterized in that: An end of the inner circumferential wall of the annular plate away from the spherical shell is provided with a chamfer, and a sealing weld between the inner circumferential wall and the spherical shell smoothly transitions to the chamfer.

4. The storage tank according to any one of claims 1 to 3, characterized in that: One end of the radial beam is a connecting end extending out of the spherical shell and opposite to the annular plate. The first pad is located between the connecting end and the annular plate and is connected to the connecting end, the annular plate and the spherical shell.

5. The storage tank according to claim 4, characterized in that: The tank wall comprises a cylindrical body, and the end surface of the connecting end is parallel to the axis of the cylindrical body.

6. The storage tank according to any one of claims 1 to 3, characterized in that: The radial beam is a T-beam, the web of the T-beam is welded to the tank top plate, and the flanges on both sides of the T-beam are respectively welded to two adjacent circumferential beams.

7. The storage tank according to claim 6, characterized in that: The annular beam is a T-shaped steel, the annular beam is welded to the web of the T-shaped beam and the flange on one side of the T-shaped beam, and the T-shaped steel is flush with the T-shaped beam.

8. The storage tank according to claim 6, characterized in that: The annular beam is an angle steel welded to the flange of the T-beam, and the T-beam is located between the annular beam and the spherical shell.

9. The storage tank according to any one of claims 1 to 3, characterized in that: The central ring is provided with a plurality of drainage holes distributed along its circumference.

10. The storage tank according to any one of claims 1 to 3, characterized in that: The tank top also includes: At least one pressure relief manhole is provided on the spherical shell and is connected to the recessed side.

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