Liquefied natural gas storage tank capable of adjusting temperature difference

Abstract

The invention discloses a liquefied natural gas storage tank capable of carrying out temperature difference adjustment, and relates to the field of natural gas storage tanks, the liquefied natural gas storage tank comprises a storage tank body and a reserved nesting piece, the reserved nesting piece is mounted on the outer side of the storage tank body in a nesting manner, and exhaust through holes are uniformly formed in the outer surface of the reserved nesting piece; the outer end of the storage tank body is in butt joint with a preset butt joint air bag assembly in a bonded mode, a vertical guide groove is formed in the outer side of a reserved nested part, and a movable butt joint part is mounted on the inner side of the vertical guide groove in a nested mode. According to the liquefied natural gas storage tank capable of carrying out temperature difference adjustment, a self-moving structure is arranged, a second wedge-shaped piece drives a sealing moving piece to slide along the outer side of an exhaust through hole in a staggered mode, and then the overall sealing connection state of a reserved nested piece is controlled in a self-adaptive mode; and the heat stored in the storage tank body is quickly discharged along the uniformly distributed exhaust through holes to work, so that the self-adaptive adjustment of the working temperature difference of the whole storage tank body is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas storage tanks, and in particular to a liquid natural gas storage tank capable of adjusting temperature difference. Background Art

[0002] As one of the necessary equipment for natural gas storage, the quality of liquefied natural gas storage tanks determines the overall storage quality; For example, a liquefied natural gas storage tank with publication number CN216202459U includes a shell, a slider is fixedly installed on the outer wall of the shell, a base is movably connected to the outer wall of the shell, a slide groove is provided inside the base, a fixed block is fixedly installed inside the base, a first spring is fixedly installed on one side of the fixed block, a slide rod is fixedly installed on one side of the fixed block, a movable block is movably connected to the outer wall of the slide rod, a wedge block is fixedly installed on the bottom of the shell, a limiting column is fixedly installed on the bottom of the shell, a limiting barrel is slidably connected to the outer wall of the limiting column, and a second spring is fixedly installed on the top of the fixed block. This can make the device have good vibration damping performance and avoid collision and damage caused by vibration during the transportation of the device; Another example is a natural gas storage tank cooling device with publication number CN212745963U, which includes a tank body, a base, a manhole, an air inlet pipe and an exhaust pipe. An inner tank No. 1 is fixedly installed in the inner cavity of the tank body, and an inner tank No. 2 is fixedly installed in the inner cavity of the inner tank No. 1. The gap between the outer wall of the inner tank No. 1 and the inner wall of the tank body is fixedly filled with heat insulation cotton. The gap between the inner wall of the inner tank No. 1 and the outer wall of the inner tank No. 2 is a water storage interlayer. A water tank is fixedly installed at the bottom of one end of the tank body, and a circulating pump is fixedly installed on the side wall of the water tank. It has strong explosion-proof performance and can block external heat to avoid causing the temperature in the tank to rise. At the same time, during the storage of natural gas, the tank body can be quickly cooled, which greatly increases the safety of use. For example, a self-supporting container with publication number CN105683645B is used for heat insulation of a liquid storage tank, comprising: a base plate and a cover plate; a plurality of support nets, interposed between the base plate and the cover plate; the support net has a composite structure, the composite structure comprises a central core extending in the thickness direction, and two outer shells surrounding the central core in the form of a sandwich, the central core has a thermal conductivity lower than that of the outer shells; and the outer shell comprises a fiber-reinforced thermoplastic polymer matrix, the central core comprises a thermoplastic polymer matrix; and the outer shell and the central core are connected by melting the thermoplastic matrices of the outer shell and the central core; Most of the above-mentioned existing technologies have improved their overall structure, while the existing liquid natural gas storage tanks are mostly placed in a solid state during operation. They are unable to adaptively adjust the temperature difference according to the needs of different usage environments to meet their temperature storage needs, resulting in the need for artificial control of temperature and other conditions in their storage environment, which leads to certain usage limitations. Summary of the invention

[0003] The purpose of the present invention is to provide a liquid natural gas storage tank capable of adjusting temperature difference, so as to solve the problem proposed in the above background technology that during the working process, most of the liquid natural gas storage tanks are in a solid state and cannot adaptively adjust the temperature difference according to the needs of different usage environments to meet the needs of temperature storage, resulting in the need for artificial control of temperature and other conditions in the storage environment.

[0004] To achieve the above object, the present invention provides the following technical solution: a liquid natural gas storage tank capable of temperature difference adjustment, comprising a storage tank body and a reserved nesting piece, wherein the outer side of the storage tank body is nested with the reserved nesting piece, and the outer surface of the reserved nesting piece is uniformly provided with exhaust holes; The outer end of the storage tank body is bonded and docked with a preset docking airbag assembly, and a vertical guide groove is provided on the outer side of the reserved nesting piece, and a movable docking piece is nested and installed on the inner side of the vertical guide groove, and a first wedge-shaped piece is fixedly connected to the outer side of the movable docking piece, and a self-movable structure is provided on the outer side of the reserved nesting piece, and the closed state of the reserved nesting piece is adaptively controlled by the self-movable structure; A heat conduction structure is arranged inside the reserved nesting piece, and the stored temperature inside the reserved nesting piece is adaptively controlled by the heat conduction structure.

[0005] Furthermore, the self-moving structure is provided with a second wedge-shaped piece, and the second wedge-shaped piece is nested and docked on the outside of the reserved nesting piece, and a sealing movable piece is fixedly connected to the outside of the second wedge-shaped piece, and the sealing movable piece corresponds to the outer side position of the exhaust through hole.

[0006] Furthermore, a reserved bevel groove is provided on the inner wall of the reserved nested part, and a docking movable part is nested and installed on the inner side of the reserved bevel groove, and a first reserved steel wire rope is fixedly connected to the outer side of the docking movable part, and the first reserved steel wire rope passes through the inner wall of the reserved nested part, and the end of the first reserved steel wire rope is docked with the lower end of the sealing movable part.

[0007] Furthermore, the preset docking airbag assembly stores hydrogen inside, and the preset docking airbag assembly is a vertical deformation structure, and during the expansion of the preset docking airbag assembly, the outer movable docking piece is pushed to move upward along the vertical guide groove, and the movable docking piece and the first wedge-shaped piece are an integrated structure.

[0008] Furthermore, during the upward movement of the first wedge-shaped member, pressure is simultaneously applied to the second wedge-shaped member in contact therewith, and the second wedge-shaped member drives the sealing movable member to slide and stagger along the outer side of the exhaust through hole, and the sealing movable member is distributed at equal angles with respect to the center point of the reserved nested member.

[0009] Furthermore, in the process of the sealing movable part being forced to move outward, the first reserved steel wire rope drives the docking movable part to slide along the inner wall of the reserved nesting part, and the docking movable part has a ring-shaped structure.

[0010] Furthermore, the heat conduction structure is provided with a second reserved steel wire rope, and the second reserved steel wire rope is docked at the rear side of the docking movable part, a guide reserved groove is opened at the inner end of the reserved nested part, and a nested connecting block is nested and installed on the outer side of the guide reserved groove, and the nested connecting block and the end of the second reserved steel wire rope are docked with each other, a return spring is docked at the lower end of the nested connecting block, and the return spring and the inner wall of the guide reserved groove are docked with each other; an external reserved cooling fin is docked and installed on the inner side of the reserved nested part, and the external reserved cooling fin is connected to an external power supply, and the outer sides of the nested connecting block and the external reserved cooling fin are fixedly connected with contact switches.

[0011] Furthermore, during the process of the docking movable part being forced to move outward, the nested connection blocks are driven to move inward by the second reserved steel wire rope, and the nested connection blocks are symmetrically distributed about the center point of the reserved nested parts.

[0012] Furthermore, during the inward movement of the nested connection block, the return spring is stretched to form an elastic structure, and the nested connection block and the contact switch outside the external reserved cooling plate are in contact with each other to form a power supply state.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The liquid natural gas storage tank capable of adjusting the temperature difference is provided with a self-moving structure. The reserved nested parts automatically store the heat generated from the outside or inside of the equipment during the operation of the storage tank body, thereby meeting the storage demand of the material inside the storage tank body. When the temperature outside or inside the storage tank body is too high, the preset docking airbag assembly at the outer end thereof will expand vertically, thereby pushing the outer movable docking part and the first wedge-shaped part to move upward along the vertical guide groove. The upwardly moved first wedge-shaped part moves upward to synchronously press the contacted second wedge-shaped part, so that the second wedge-shaped part drives the sealing movable part to slide along the outer side of the exhaust through hole in an interlaced manner, thereby adaptively controlling the sealing connection state of the reserved nested parts as a whole, so that the heat stored inside the reserved nested parts is quickly discharged along the evenly distributed exhaust through holes, thereby realizing adaptive adjustment of the working temperature difference of the storage tank body as a whole. Furthermore, in the process of the integral sealing movable part being forced to move outward, it will then drive the connecting movable part of the ring-shaped structure to move outward along the inner wall of the reserved nested part through the first reserved steel wire rope, thereby pushing the hot air inside the reserved nested part to be discharged outward, realizing rapid heat discharge processing, avoiding the traditional solid-state placement state, and adaptively performing temperature difference adjustment processing according to the needs of different use environments, thereby meeting its temperature storage needs, without the need to manually control the temperature and other conditions according to the storage environment, thereby improving the practicality of the device; Furthermore, a heat conduction structure is provided, and when the docking movable part is subjected to force, it will drive the nested connection block to form displacement work through the second reserved steel wire rope, and the nested connection block will move to contact with the external reserved cooling plate, so that the nested connection block and the contact switch on the outside of the external reserved cooling plate are in contact with each other to form a power supply state, thereby adaptively controlling the storage temperature inside the reserved nested part through the heat conduction structure, and further adjusting the working temperature of the storage tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A schematic diagram of a half-cut three-dimensional structure of a nested component is reserved for the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the second wedge-shaped member of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure; Figure 5 It is a schematic diagram of the three-dimensional structure of the sealing movable part of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the preset docking airbag assembly of the present invention; Figure 7 A schematic diagram of the three-dimensional structure of the nested parts is reserved for the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the movable docking piece of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the contact switch of the present invention.

[0015] In the figure: 1. Storage tank body; 2. Reserved nested parts; 3. Preset docking airbag assembly; 4. Exhaust through hole; 5. Vertical guide groove; 6. Movable docking part; 7. First wedge-shaped part; 8. Second wedge-shaped part; 9. Sealing movable part; 10. First reserved steel wire rope; 11. Reserved inclined groove; 12. Docking movable part; 13. Second reserved steel wire rope; 14. Nested connecting block; 15. Guide reserved groove; 16. Reset spring; 17. Contact switch; 18. External reserved cooling fin. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments 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.

[0017] Example 1: Please refer to Figure 1-9 The present invention provides the following technical solution: A liquid natural gas storage tank capable of adjusting temperature difference, comprising a storage tank body 1, a reserved nesting part 2, a preset docking airbag assembly 3, an exhaust through hole 4, a vertical guide groove 5, a movable docking part 6, a first wedge-shaped part 7, a second wedge-shaped part 8, a sealing movable part 9, a first reserved steel wire rope 10, a reserved inclined groove 11, a docking movable part 12, a second reserved steel wire rope 13, a nested connection block 14, a guide reserved groove 15, a return spring 16, a contact switch 17 and an external reserved cooling fin 18; A reserved nesting piece 2 is nested and installed on the outer side of the storage tank body 1, and exhaust holes 4 are evenly opened on the outer surface of the reserved nesting piece 2; The outer end of the storage tank body 1 is bonded and docked with a preset docking airbag assembly 3, and a vertical guide groove 5 is provided on the outer side of the reserved nesting piece 2, and a movable docking piece 6 is nested and installed on the inner side of the vertical guide groove 5, and a first wedge-shaped piece 7 is fixedly connected to the outer side of the movable docking piece 6, and a self-movable structure is provided on the outer side of the reserved nesting piece 2, and the closed state of the reserved nesting piece 2 is adaptively controlled by the self-movable structure; The self-moving structure is provided with a second wedge-shaped member 8, and the second wedge-shaped member 8 is nested and docked on the outside of the reserved nesting member 2, and a sealing movable member 9 is fixedly connected to the outside of the second wedge-shaped member 8, and the sealing movable member 9 corresponds to the outer position of the exhaust through hole 4. The inner wall of the reserved nesting member 2 is provided with a reserved bevel groove 11, and a docking movable member 12 is nested and installed inside the reserved bevel groove 11, and a first reserved steel wire rope 10 is fixedly connected to the outside of the docking movable member 12, and the first reserved steel wire rope 10 passes through the inner wall of the reserved nesting member 2, and the end of the first reserved steel wire rope 10 is docked with the lower end of the sealing movable member 9.

[0018] The preset docking airbag assembly 3 stores hydrogen inside, and the preset docking airbag assembly 3 is a vertical deformation structure, and the preset docking airbag assembly 3 pushes the outer movable docking member 6 to move upward along the vertical guide groove 5 during the expansion process, and the movable docking member 6 and the first wedge member 7 are an integrated structure. During the upward movement of the first wedge member 7, pressure is applied to the second wedge member 8 in contact, and the second wedge member 8 drives the sealing movable member 9 to slide and stagger along the outer side of the exhaust through hole 4, and the sealing movable member 9 is distributed at equal angles with respect to the center point of the reserved nesting member 2. During the process of the sealing movable member 9 being forced to move outward, the first reserved steel wire rope 10 drives the docking movable member 12 to slide along the inner wall of the reserved nesting member 2, and the docking movable member 12 is in a ring-shaped structure.

[0019] Embodiment 2: Based on Embodiment 1, a heat conduction structure is also disclosed, and its specific structure is as follows: A heat conduction structure is provided inside the reserved nesting piece 2, and the stored temperature inside the reserved nesting piece 2 is adaptively controlled by the heat conduction structure.

[0020] The heat conduction structure is provided with a second reserved steel wire rope 13, and the second reserved steel wire rope 13 is docked at the rear side of the docking movable part 12. A guide reserved groove 15 is provided at the inner end of the reserved nesting part 2, and a nested connection block 14 is nested and installed on the outer side of the guide reserved groove 15, and the nested connection block 14 and the end of the second reserved steel wire rope 13 are docked with each other, and a return spring 16 is docked at the lower end of the nested connection block 14, and the return spring 16 and the inner wall of the guide reserved groove 15 are docked with each other; an external reserved cooling fin 18 is docked and installed on the inner side of the reserved nesting part 2, and the external reserved cooling fin 18 is connected to the external power supply, and the outer sides of the nested connection block 14 and the external reserved cooling fin 18 are fixedly connected with a contact switch 17. In the process of the docking movable part 12 being forced to move outward, the nested connection block 14 is driven to move inward by the second reserved steel wire rope 13, and the nested connection block 14 is symmetrically distributed about the center point of the reserved nesting part 2. During the operation of the storage tank body 1, the reserved nested component 2 automatically stores the heat generated from the outside or inside the equipment, thereby meeting the storage demand for materials inside the storage tank body 1. When the temperature on the outside or inside of the storage tank body 1 is too high, the preset docking airbag assembly 3 at its outer end will expand vertically, thereby pushing the outer movable docking component 6 and the first wedge component 7 to move upward along the vertical guide groove 5. The upwardly moved first wedge component 7 moves upward and applies pressure to the contacted second wedge component 8, allowing the second wedge component 8 to drive the sealing movable component 9 to slide along the outside of the exhaust through hole 4 in an interlaced manner, thereby adaptively controlling the overall sealing connection state of the reserved nested component 2, so that the heat stored inside it can be quickly discharged along the evenly distributed exhaust through holes 4, thereby realizing adaptive adjustment of the overall working temperature difference of the storage tank body 1.

[0021] During the inward movement of the nested connection block 14, the return spring 16 is stretched to form an elastic structure, and the nested connection block 14 and the contact switch 17 on the outer side of the external reserved cooling plate 18 are in contact with each other to form a power supply state; during the outward movement of the integral sealing movable part 9 under force, it will then drive the docking movable part 12 of the ring-shaped structure to move outward along the inner wall of the reserved nested part 2 through the first reserved steel wire rope 10, thereby pushing the hot air inside the reserved nested part 2 to be discharged outward, realizing the rapid discharge of heat, avoiding the traditional solid-state placement state, and adaptively performing temperature control according to the needs of different use environments. The difference adjustment processing can meet the temperature storage demand, and there is no need to manually control the temperature and other conditions according to the storage environment. When the docking movable part 12 is subjected to force, it will drive the nested connecting block 14 to form displacement work through the second reserved steel wire rope 13, and the nested connecting block 14 will move to contact with the external reserved cooling plate 18, so that the nested connecting block 14 and the contact switch 17 on the outside of the external reserved cooling plate 18 are in contact with each other to form a power supply state, thereby adaptively controlling the storage temperature inside the reserved nested part 2 through the heat conduction structure, and further adjusting the working temperature of the storage tank body 1.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid natural gas storage tank capable of adjusting temperature difference, comprising a storage tank body (1) and a reserved nesting piece (2), wherein the reserved nesting piece (2) is nested and installed on the outer side of the storage tank body (1), and exhaust holes (4) are evenly opened on the outer surface of the reserved nesting piece (2); Features: The outer end of the storage tank body (1) is bonded and docked with a preset docking airbag assembly (3), and the outer side of the reserved nesting piece (2) is provided with a vertical guide groove (5), and the inner side of the vertical guide groove (5) is nested with a movable docking piece (6), the outer side of the movable docking piece (6) is fixedly connected with a first wedge-shaped piece (7), and the outer side of the reserved nesting piece (2) is provided with a self-moving structure, and the closed state of the reserved nesting piece (2) is adaptively controlled by the self-moving structure; A heat conduction structure is provided on the inner side of the reserved nesting piece (2), and the stored temperature inside the reserved nesting piece (2) is adaptively controlled by the heat conduction structure.

2. A liquid natural gas storage tank capable of adjusting temperature difference according to claim 1, characterized in that: The self-moving structure is provided with a second wedge-shaped piece (8), and the second wedge-shaped piece (8) is nested and docked on the outside of the reserved nesting piece (2), and a sealing movable piece (9) is fixedly connected to the outside of the second wedge-shaped piece (8), and the sealing movable piece (9) corresponds to the outer position of the exhaust through hole (4).

3. A liquid natural gas storage tank capable of adjusting temperature difference according to claim 2, characterized in that: The inner wall of the reserved nesting piece (2) is provided with a reserved bevel groove (11), and a docking movable piece (12) is nested and installed inside the reserved bevel groove (11), and a first reserved steel wire rope (10) is fixedly connected to the outer side of the docking movable piece (12), and the first reserved steel wire rope (10) passes through the inner wall of the reserved nesting piece (2), and the end of the first reserved steel wire rope (10) is docked with the lower end of the sealing movable piece (9).

4. A liquid natural gas storage tank capable of adjusting temperature difference according to claim 3, characterized in that: The preset docking airbag assembly (3) stores hydrogen inside, and the preset docking airbag assembly (3) is a vertically deformable structure, and during the expansion of the preset docking airbag assembly (3), the outer movable docking member (6) is pushed to move upward along the vertical guide groove (5), and the movable docking member (6) and the first wedge-shaped member (7) are an integrated structure.

5. A liquid natural gas storage tank capable of adjusting temperature difference according to claim 4, characterized in that: During the upward movement of the first wedge-shaped member (7), pressure is simultaneously applied to the second wedge-shaped member (8) in contact therewith, and the second wedge-shaped member (8) drives the sealing movable member (9) to slide and stagger along the outer side of the exhaust through hole (4), and the sealing movable member (9) is distributed at equal angles with respect to the center point of the reserved nesting member (2).

6. A liquid natural gas storage tank capable of adjusting temperature difference according to claim 5, characterized in that: During the process of the sealing movable part (9) being forced to move outward, the first reserved steel wire rope (10) drives the docking movable part (12) to slide along the inner wall of the reserved nesting part (2), and the docking movable part (12) is in a ring-shaped structure.

7. A liquid natural gas storage tank capable of adjusting temperature difference according to claim 4, characterized in that: The heat conduction structure is provided with a second reserved steel wire rope (13), and the second reserved steel wire rope (13) is docked at the rear side of the docking movable part (12); the inner end of the reserved nesting part (2) is provided with a guide reserved groove (15), and a nested connection block (14) is nested and installed on the outer side of the guide reserved groove (15), and the nested connection block (14) and the end of the second reserved steel wire rope (13) are docked with each other, and the lower end of the nested connection block (14) is docked with a return spring (16), and the return spring (16) and the inner wall of the guide reserved groove (15) are docked with each other; An external reserved cooling fin (18) is butt-jointedly mounted on the inner side of the reserved nesting piece (2), and the external reserved cooling fin (18) is connected to an external power source, and a contact switch (17) is fixedly connected to the outer sides of the nested connection block (14) and the external reserved cooling fin (18).

8. A liquid natural gas storage tank capable of adjusting temperature difference according to claim 7, characterized in that: During the process of the docking movable part (12) being forced to move outward, the nested connection block (14) is driven to move inward by the second reserved steel wire rope (13), and the nested connection blocks (14) are symmetrically distributed about the center point of the reserved nested part (2).

9. A liquid natural gas storage tank capable of adjusting temperature difference according to claim 8, characterized in that: During the inward movement of the nested connection block (14), the return spring (16) is stretched to form an elastic structure, and a power supply state is formed when the nested connection block (14) and the contact switch (17) outside the external reserved cooling plate (18) contact each other.

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