Head plate for gas storage tank and gas storage tank

Abstract

An embodiment of the present invention provides a head plate and a gas tank body for a gas tank body. One of the head plates for a gas tank body includes a flat plate, on which a multi-stage protrusion is arranged, and the multi-stage protrusion includes: a protrusion that abuts against the seal when the head plate is installed on the gas tank body; a protrusion that cooperates with other interference parts when the head plate is installed on the gas tank body, and the protrusion is formed with an avoidance surface that matches the entire or partial surface of the corresponding interference part. The head plate proposed in this technical solution is convenient and accurate in positioning and matching with other parts during assembly, and the shape of the multi-stage protrusion greatly reduces the thickness reduction of the slab during deep drawing; at the same time, it can be formed as a single piece without cutting it in half after forming, thus avoiding the problem of changes in the edge shape of the parts during cutting.

Description

Technical Field

[0001] The invention belongs to the technical field of liquefied gas storage tanks, and in particular relates to a head plate for a gas storage tank and a gas storage tank. Background Art

[0002] The head is an important part of the gas tank body. It is in direct contact with the stored medium and connected to other corrugated plates to play a sealing role. It needs to meet specific working conditions and has high requirements for its structure, shape and forming quality. At present, the shape and size of the existing head plate, the uniformity of thickness, the overall strength and reliability need to be further improved and strengthened. Summary of the invention

[0003] In view of the above problems existing in the prior art, an object of the embodiments of the present invention is to provide a head plate for a gas storage tank body and a liquefied natural gas tank body.

[0004] The technical solution adopted in the embodiment of the present invention is a head plate for a gas storage tank body, comprising a flat plate, on which a multi-stage protrusion is provided, and the multi-stage protrusion comprises:

[0005] When the head plate is installed on the gas storage tank body, it abuts against the protrusion of the sealing opening;

[0006] When the head plate is installed on the gas storage tank body, the protrusions installed in cooperation with other interference parts are formed with avoidance surfaces adapted to all or part of the surface of the corresponding interference parts.

[0007] Furthermore, a primary protrusion and a secondary protrusion are provided on the plate, and the primary protrusion and the secondary protrusion protrude in opposite directions.

[0008] Furthermore, a circle of overlapping ribs is arranged on the flat plate, and the inner structure of the circle of overlapping ribs is a primary protrusion.

[0009] Further, the primary protrusion is configured as a protrusion that abuts against the seal, and the secondary protrusion is configured with the avoidance surface;

[0010] One end of the secondary protrusion is configured in the middle of the primary protrusion, and the other end of the secondary protrusion extends toward the edge of the plate;

[0011] In the case where the avoidance surface has a wide portion and a narrow portion opposite to each other, at least the wide portion forms an opening at an edge of the flat plate.

[0012] Furthermore, one end of the secondary protrusion located in the middle of the primary protrusion is constructed as a curved surface.

[0013] Furthermore, the cross section of the secondary protrusion is in a "V" shape, and the bottom of the secondary protrusion is configured as a curved surface.

[0014] Furthermore, with the secondary protrusion straddling the overlap rib as a boundary, the bottom of the secondary protrusion located in the area of ​​the primary protrusion is constructed as a curved surface that becomes higher.

[0015] Furthermore, with the secondary protrusion straddling the overlap rib as a boundary, the bottom of the secondary protrusion outside the area of ​​the primary protrusion is constructed as a curved surface of equal height.

[0016] Furthermore, the position where the secondary protrusion connects the primary protrusion and the flat plate is configured as a rounded corner.

[0017] A gas storage tank body is provided with the head plate as described above.

[0018] Compared with the prior art, the head plate proposed in the present invention is convenient and accurate in positioning and matching when assembled with other parts, and the shape of the multi-stage protrusions greatly reduces the thickness reduction of the slab during deep drawing; at the same time, it can be formed as a single piece without cutting it in half after forming, thus avoiding the problem of changes in the edge shape of the parts during cutting.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

[0020] This summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the invention. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the bottom structure of an embodiment of the present invention.

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of an embodiment of the present invention.

[0025] Figure 4 It is a schematic diagram of the bottom structure of an embodiment of the present invention.

[0026] Figure 5 It is a schematic diagram of the side structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0030] See also Figures 1 to 5 The embodiment of the present invention provides a head plate for a gas storage tank body, comprising a flat plate 1, on which a multi-stage protrusion is provided, and the multi-stage protrusion comprises:

[0031] When the head plate is installed on the gas storage tank body, it abuts against the protrusion of the sealing opening;

[0032] When the head plate is installed on the gas tank body, the protrusions installed with other interference parts are matched, and the protrusions are formed with avoidance surfaces that are adapted to the entire or partial surfaces of the corresponding interference parts. This technical solution uses the protrusions to improve the structural strength, thereby further improving and strengthening the overall strength and reliability of the head plate. It can be formed in one piece without cutting in half after forming, avoiding the problem of changes in the edge shape of the parts during cutting.

[0033] The flat plate 1 is provided with a primary protrusion 2 and a secondary protrusion 3, and the primary protrusion 2 and the secondary protrusion 3 protrude in opposite directions. The opposite protrusion directions make the structure as a whole have better structural strength and pressure bearing capacity, and help to improve the uniformity of shape, size and thickness of the head plate after forming.

[0034] The flat plate 1 is provided with a circle of lap ribs 4, and the inner structure of the circle of lap ribs 4 is a primary protrusion 2. The lap ribs 4 can enhance the structural strength of the head plate on the one hand, and on the other hand, they play a role in positioning and matching when overlapping (assembling with other parts). The lap ribs 4 are formed by bending.

[0035] The primary protrusion 2 is configured as a protrusion that abuts against the seal, and the secondary protrusion 3 is configured with the avoidance surface; one end of the secondary protrusion 3 is configured in the middle of the primary protrusion 2, and the other end of the secondary protrusion 3 extends toward the edge of the flat plate 1; in the case where the avoidance surface has a wide portion and a narrow portion opposite to each other, at least the wide portion forms an opening at the edge of the flat plate 1. One end of the secondary protrusion 3 extending to the edge of the flat plate 1 (the end formed with the opening) is used for assembly with other components (such as a corrugated plate).

[0036] The end of the secondary protrusion 3 located in the middle of the primary protrusion 2 is configured as a curved surface. The curved surface is used to transition between the secondary protrusion 3 and the primary protrusion 2, which helps to improve the uniformity of the shape, size and thickness of the head plate after forming.

[0037] The cross section of the secondary protrusion 3 is "V" shaped, and the bottom structure of the secondary protrusion 3 is a curved surface. The "V" shaped cross section and the curved bottom structure of the secondary protrusion 3 can enhance the structural strength, thereby improving the overall strength and reliability of the head plate.

[0038] With the secondary protrusion 3 crossing the overlap rib 4 as a boundary, the bottom of the secondary protrusion 3 located in the area of ​​the primary protrusion 2 is constructed as a curved surface 31 that becomes higher.

[0039] The increased curved surface 31 means that the straight-line distance between the bottom of the curved surface in the area of ​​the primary protrusion 2 on the secondary protrusion 3 and the flat plate 1 is different. Such an increased curved surface 31 can improve the uniformity of the shape, size and thickness of the head plate after forming, strengthen the structural strength, and thus improve the overall strength and reliability of the head plate.

[0040] With the secondary protrusion 3 crossing the overlap rib 4 as a boundary, the bottom of the secondary protrusion 3 outside the area of ​​the primary protrusion 2 is constructed as a curved surface 32 of the same height.

[0041] The curved surface 32 of equal height means that the bottom of the curved surface of the secondary protrusion 3 outside the area of ​​the primary protrusion 2 has the same straight-line distance from the plate 1. Its purpose is to facilitate assembly with other parts and facilitate positioning and matching during assembly.

[0042] The position where the secondary protrusion 3 connects the primary protrusion 2 and the plate 1 is rounded. The use of rounded corners to construct the connection between the primary protrusion 2 and the plate 1 and the secondary protrusion 3 helps to improve the uniformity of the shape, size and thickness of the head plate after forming.

[0043] This technical solution can be applied to liquefied natural gas (LNG) tanks. The sealing plate is in direct contact with the liquefied natural gas (LNG) and connected to other corrugated plates to play a sealing role. The positioning and matching of the head plate and other parts are convenient and accurate when assembled. The thickness reduction of the slab is greatly reduced when the multi-level protrusions are formed. At the same time, the forming is done individually instead of being cut in half after forming, which avoids the problem of changes in the edge shape of the parts during cutting.

[0044] The embodiment of the present invention further provides a gas storage tank body, which is equipped with the head plate as described above.

[0045] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. A head plate for a gas storage tank, comprising a flat plate (1), characterized in that: The flat plate (1) is provided with a multi-stage protrusion, and the multi-stage protrusion comprises: When the head plate is installed on the gas storage tank body, it abuts against the protrusion of the sealing opening; When the head plate is installed on the gas storage tank body, the protrusion is matched with the other interference parts, and the protrusion is formed with an avoidance surface adapted to the whole or part of the surface of the corresponding interference part; The multi-stage protrusion comprises a primary protrusion (2) and a secondary protrusion (3) with opposite protrusion directions; The flat plate (1) is provided with a circle of overlapping ribs (4), and the internal structure of the circle of overlapping ribs (4) is a primary protrusion (2); The primary protrusion (2) is configured as a protrusion that abuts against the seal, and the secondary protrusion (3) is configured with the avoidance surface; One end of the secondary protrusion (3) is constructed in the middle of the primary protrusion (2), and the other end of the secondary protrusion (3) extends toward the edge of the plate (1); In the case where the avoidance surface has a wide portion and a narrow portion opposite to each other, at least the wide portion forms an opening at the edge of the flat plate (1).

2. The head plate for a gas storage tank according to claim 1, characterized in that: One end of the secondary protrusion (3) located in the middle of the primary protrusion (2) is configured as a curved surface.

3. The head plate for a gas storage tank according to claim 1, characterized in that: The cross section of the secondary protrusion (3) is in a "V" shape, and the bottom of the secondary protrusion (3) is configured as a curved surface.

4. The head plate for a gas storage tank according to claim 3, characterized in that: With the secondary protrusion (3) straddling the overlap rib (4) as a boundary, the bottom of the secondary protrusion (3) located in the area of ​​the primary protrusion (2) is constructed as a curved surface (31) that becomes higher.

5. The head plate for a gas storage tank according to claim 3, characterized in that: With the secondary protrusion (3) straddling the overlap rib (4) as a boundary, the bottom of the secondary protrusion (3) outside the area of ​​the primary protrusion (2) is constructed as a curved surface (32) of equal height.

6. The head plate for a gas storage tank according to claim 1, characterized in that: The position where the secondary protrusion (3) connects the primary protrusion (2) and the flat plate (1) is configured as a rounded corner.

7. A gas storage tank, characterized in that: A head plate as described in any one of claims 1 to 6 is installed.

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