A liquefied natural gas storage structure with a protection mechanism

Abstract

The present invention belongs to the technical field of liquefied natural gas storage, and specifically relates to a liquefied natural gas storage structure with a protective mechanism, comprising a tank body, a tube body provided on the tank body, a cover body connected to the tube body, and a sealing component provided on the tank body to prevent liquefied natural gas leakage, the sealing component comprising a sealing ring 1, the sealing ring 1 being connected to the inner wall of the tube body, and two groups of sealing rings 1 are provided in total. The liquefied natural gas storage structure with a protective mechanism is provided with three layers of sealing measures, the first layer being achieved by the sealing ring 2 on the outer wall of the cover being against the inner wall of the tube body; the second layer being achieved by the downward movement of the sealing block to squeeze the first group of sealing rings 1 on the inner wall of the tube body; and the third layer being achieved by utilizing the movement of a piston to expand the sealing ring 3, which is tightly against the outer wall between the two groups of sealing rings 1. This multiple sealing design greatly improves the sealing performance of the tank body, can more reliably prevent liquefied natural gas leakage, and ensure storage safety.

Description

Technical Field

[0001] The present invention relates to the technical field of liquefied natural gas storage, and in particular to a liquefied natural gas storage structure with a protection mechanism. Background Art

[0002] Liquefied natural gas is a clean energy source that is converted into liquid form through cooling and compression technology. Its essence is a mixture of hydrocarbons mainly composed of methane. It is highly efficient, environmentally friendly, and easy to store and transport.

[0003] Currently, existing liquefied natural gas (LNG) storage tanks often utilize only single- or double-layer sealing structures. In complex and volatile storage environments, such as those characterized by large temperature fluctuations and frequent pressure changes, this single sealing method is difficult to effectively address, and its sealing performance gradually deteriorates. Over time, sealing components are susceptible to aging and wear, further weakening the seal and significantly increasing the risk of LNG leakage. This not only threatens the safety of the storage tank itself, but can also pose a serious risk to the surrounding environment and personnel. Therefore, we propose a LNG storage structure with a protective mechanism. Summary of the Invention

[0004] The main purpose of the present invention is to provide a liquefied natural gas storage structure with a protection mechanism, which can solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention proposes a liquefied natural gas storage structure with a protective mechanism, comprising a tank body, a tube body provided on the tank body, a cover body connected to the tube body, and a sealing assembly provided on the tank body to prevent leakage of liquefied natural gas, the sealing assembly comprising:

[0006] Sealing ring 1, said sealing ring 1 being connected to the inner wall of the tube body, and said sealing ring 1 being provided with two groups in total;

[0007] A second sealing ring connected to the outer wall of the cover;

[0008] A rod body, wherein a screw is provided inside the rod body, a limiting groove and a sliding groove are provided on the outer wall of the screw body, and the rod body passes through the cover body and is rotatably connected to the cover body;

[0009] A sealing block is provided with an inner cavity, a piston is provided in the inner cavity, the piston is connected to the end of the screw, an air pipe is provided inside the sealing block, the end of the air pipe is connected to a sealing ring three, the sealing ring three has a cavity, and a guide rod is provided on the outer wall of the sealing block to improve the stability of the sealing block movement.

[0010] Preferably, a sleeve is provided inside the cover body, the upper end diameter of the sleeve is smaller than the lower end diameter, and the upper end diameter is smaller than the distance between the two groups of extrusion blocks, the bottom end of the sleeve is connected to the outer wall of the sealing block, and the inner wall of the sleeve is connected to a slide seat for improving the movement stability of the block, and a block is provided inside the slide seat.

[0011] Preferably, the end of the block is connected to a moving rod, which passes through the sleeve and is slidably connected to the sleeve. A spring is provided between the end of the moving rod and the sleeve. The elastic force generated by the deformation of the spring can enable the moving rod to drive the block to reset.

[0012] Preferably, the movable rod is provided with a through slot, the upper end of the movable rod is provided with a pull rod, the lower end of the pull rod is connected with an inclined block, and the inclined block is arranged inside the through slot.

[0013] Preferably, the pull rod passes through the cover body and is slidably connected to the cover body. An extrusion block is provided at the upper end of the pull rod, and the extrusion block is connected to the inner wall of the cover.

[0014] Preferably, the rod body passes through the rotating disk and is fixedly connected to the rotating disk, and the rotating disk is provided with a vortex groove.

[0015] Preferably, a locking block is provided inside the cover body, a groove is provided at the end of the locking block, one side outer wall of the locking block is connected to a protrusion 1, and the other side outer wall of the locking block is connected to a protrusion 2, and the protrusion 2 is slidably connected to the vortex groove.

[0016] Preferably, a sliding groove is provided on the inner wall of the cover, and the sliding groove is slidably connected to the protrusion to improve the stability of the locking block movement.

[0017] Preferably, the inner wall of the inner cavity is connected to a limiting block, the inner wall of the limiting block is connected to a fixed block, and the fixed block is slidably connected to the slide groove. Through the design of the slide groove and the fixed block, the screw is slidably connected to the limiting block to prevent the screw from rotating synchronously under the action of static friction during the rotation of the rod body.

[0018] Preferably, a locking piece is provided on the outer wall of the tube body, and the cover body can be locked by cooperating with the locking piece and the locking block. The locking piece is composed of a threaded bolt and a nut. The threaded bolt is rotatably connected to the outer wall of the tube body. The threaded bolt is turned into the groove formed in the locking block and then locked by the nut, so that the cover body can be locked and fixed.

[0019] The present invention provides a liquefied natural gas storage structure with a protection mechanism, which has the following beneficial effects:

[0020] (1) The liquefied natural gas storage structure with a protective mechanism is provided with three layers of sealing measures. The first layer is achieved by the sealing ring 2 on the outer wall of the cover body against the inner wall of the tube body; the second layer is achieved by the downward movement of the sealing block to squeeze the first group of sealing rings on the inner wall of the tube body; the third layer is achieved by the piston movement to expand the sealing ring 3 and tightly press it against the outer wall between the two groups of sealing rings. This multiple sealing design greatly improves the sealing performance of the tank body, can more reliably prevent the leakage of liquefied natural gas, and ensure storage safety.

[0021] (2) The liquefied natural gas storage structure with a protective mechanism, through the design of the rotating disk, the vortex groove and the locking block, can lock the cover only after the operator completes the three-layer sealing of the tube body by rotating the rod body. This linkage mechanism ensures the integrity of the sealing operation and avoids the safety hazards caused by direct locking due to inadequate sealing. At the same time, when the cover body is completely locked, the locking block is locked, and the rotating disk and the rod body are also limited, further enhancing the safety of the structure and preventing accidental operation to open the sealing component when the cover body is locked.

[0022] (3) The liquefied natural gas storage structure with a protective mechanism, when opening the cover body, first release the limit of the locking block and rotate the rod body in the opposite direction, the locking block moves toward the inside of the cover body under the action of the vortex groove, the screw drives the piston to move upward, so that the air inside the sealing ring 3 is drawn back into the inner cavity, and the sealing ring 3 returns to its original state. This design avoids the damage caused by excessive squeezing of the sealing ring 3 and the sealing ring 1 during the opening of the cover body, plays a protective role for the sealing ring 3 and the sealing ring together, prolongs the service life of the sealing components, and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0025] Figure 2 Schematic diagram of the internal structure of the tube body of the present invention Figure 1 ;

[0026] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the cover body of the present invention;

[0027] Figure 4 Schematic diagram of the internal structure of the tube body of the present invention Figure 2 ;

[0028] Figure 5 For the present invention Figure 2 Schematic diagram of the structure of A in the middle;

[0029] Figure 6 For the present invention Figure 2 Schematic diagram of the structure of middle B;

[0030] Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the sleeve of the present invention;

[0031] Figure 8 Schematic diagram of the three-dimensional structure of the screw of the present invention;

[0032] Figure 9 It is a schematic diagram of the three-dimensional structure of the locking block of the present invention.

[0033] Description of Figure Numbers:

[0034] 1. Tank body; 2. Tube body; 20. Sealing ring 1; 21. Cover body; 210. Sealing ring 2; 211. Sliding groove; 212. Extrusion block; 22. Rotating disk; 221. Vortex groove; 23. Locking block; 231. Bump 1; 232. Groove; 233. Bump 2; 24. Locking piece; 31. Rod body; 32. Screw; 321. Limiting groove; 322. Sliding groove; 33. Sleeve body; 331. Block; 332. Moving rod; 333. Oblique block; 334. Pull rod; 335. Through groove; 336. Sliding seat; 34. Sealing block; 341. Inner cavity; 342. Piston; 343. Gas pipe; 344. Sealing ring 3; 345. Cavity; 346. Guide rod; 347. Limiting block; 348. Fixed block.

[0035] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0036] In order to enable people in this technical field to better understand the solution of this application, the technical solution in the embodiment of this application will be clearly and completely described below in combination with the drawings in the embodiment of this application. Obviously, the described embodiment is only an embodiment of a part of this application, not all embodiments.

[0037] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of this application.

[0038] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, for the purposes of describing the embodiments of the present application herein.

[0039] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0040] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0041] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0042] See also Figures 1-9 The present invention proposes a liquefied natural gas storage structure with a protective mechanism, including a tank body 1, a tube body 2 is provided on the tank body 1, and a locking member 24 is provided on the outer wall of the tube body 2. The locking member 24 cooperates with the locking block 23 to lock the cover body 21. The locking member 24 is composed of a threaded bolt and a nut. The threaded bolt is rotatably connected to the outer wall of the tube body 2. The threaded bolt is rotated into the groove 232 provided in the locking block 23 and then locked by the nut, so that the cover body 21 can be locked and fixed. The cover body 21 is connected to the tube body 2, and a sealing component for preventing liquefied natural gas leakage is provided on the tank body 1.

[0043] In an embodiment of the present invention, in order to prevent leakage of liquefied natural gas, specifically, the sealing assembly includes a sealing ring 20, which is connected to the inner wall of the tube body 2. There are two groups of sealing rings 20, and a sealing ring 210 is connected to the outer wall of the cover body 21. A screw 32 is provided inside the rod body 31, and a limiting groove 321 and a slide groove 322 are provided on the outer wall of the screw 32. The limiting groove 321 cooperates with the block 331 to enable the screw 32 to drive the sleeve 33 to move synchronously. The rod body 31 passes through the cover body 21 and is rotatably connected to the cover body 21. The sealing block 34 has an inner cavity 341, and a piston 342 is provided in the inner cavity 341. The piston 342 is connected to the end of the screw 32. The inside of the sealing block 34 An air delivery pipe 343 is provided, the end of which is connected to a sealing ring 344, which has a cavity 345 formed therein, and a guide rod 346 is provided on the outer wall of the sealing block 34, which is fixedly connected to the guide rod 346, and a plurality of guide rods 346 are provided in total to improve the stability of the movement of the sealing block 34, the inner wall of the inner cavity 341 is connected to a limit block 347, the inner wall of the limit block 347 is connected to a fixed block 348, and the fixed block 348 is slidably connected to the slide groove 322. The design of the slide groove 322 and the fixed block 348 enables the screw rod 32 to be slidably connected to the limit block 347, thereby preventing the screw rod 32 from rotating synchronously under the action of static friction during the rotation of the rod body 31;

[0044] Furthermore, a sleeve 33 is provided inside the cover 21. The diameter of the upper end of the sleeve 33 is smaller than the diameter of the lower end, and the diameter of the upper end is smaller than the distance between the two groups of extrusion blocks 212. The bottom end of the sleeve 33 is connected to the outer wall of the sealing block 34. The inner wall of the sleeve 33 is connected to a slide 336 for improving the stability of the movement of the block 331. The slide 336 is provided with a block 331. The end of the block 331 is connected to a moving rod 332. The moving rod 332 passes through the sleeve 33 and The movable rod 332 is slidably connected to the sleeve 33, and a spring is provided between the end of the movable rod 332 and the sleeve 33. The movable rod 332 is provided with a through slot 335. The upper end of the movable rod 332 is provided with a pull rod 334. The lower end of the pull rod 334 is connected to an inclined block 333, and the inclined block 333 is arranged inside the through slot 335. The pull rod 334 passes through the cover 21 and is slidably connected to the cover 21. The upper end of the pull rod 334 is provided with an extrusion block 212, and the extrusion block 212 is connected to the inner wall of the cover 21.

[0045] Furthermore, the rod body 31 passes through the rotating disk 22 and is fixedly connected to the rotating disk 22. The rotating disk 22 is provided with a vortex groove 221. A locking block 23 is provided inside the cover body 21. A groove 232 is provided at the end of the locking block 23. A protrusion 1 231 is connected to the outer wall of one side of the locking block 23. A protrusion 233 is connected to the outer wall of the other side of the locking block 23. The protrusion 233 is slidably connected to the vortex groove 221. A sliding groove 211 is provided on the inner wall of the cover body 21. The sliding groove 211 is slidably connected to the protrusion 1 231, so as to improve the stability of the movement of the locking block 23.

[0046] In the present invention, when in use, the cover body 21 is first turned over and the cover body 21 is covered on the upper end of the tube body 2. At this time, the sealing ring 210 connected to the outer wall of the cover body 21 will abut against the inner wall of the tube body 2, thereby achieving the first layer of sealing. Then, the rotating wheel is turned. At this time, the rod body 31 fixedly connected to the rotating wheel rotates synchronously. It should be noted that the screw 32 designed inside the rod body 31 is threadedly connected to the rod body 31. At the same time, the screw 32 passes through the limit block 347, and the fixed block 348 is inside the slide groove 322. At this time, the screw 32 is in a limited state. Therefore, when the rod body 31 rotates, the screw 32 threadedly connected to the rod body 31 will move downward. Figure 5 As shown, the clamping block 331 is located in the limiting groove 321 defined by the screw 32, so that the screw 32 and the sleeve 33 are in a clamping state. Therefore, when the screw 32 moves downward under the action of the rod 31, the sealing block 34 fixedly connected to the sleeve 33 moves downward synchronously. During this process, the outer wall of the sealing block 34 squeezes the first set of sealing rings 20 on the inner wall of the tube body 2, thereby achieving a second layer of sealing.

[0047] When the locking cam 331 is in the unlock state, the locking cam 334 is in the unlock state, and the locking cam 335 is locked, so that the locking cam 331 can be unlocked. In the deformed state, the sealing ring 344 is located between the first sealing ring 20 and the second sealing ring 20. Then, when the rod body 31 continues to rotate, the screw 32 continues to move downward. At this time, the piston 342 fixedly connected to the screw 32 moves downward synchronously. When the piston 342 moves downward, the gas on the inner wall of the inner cavity 341 is squeezed by the piston 342 and input into the cavity 345 through the gas pipe 343, causing the sealing ring 344 to expand. The expansion of the sealing ring 344 causes the sealing ring 344 to tightly contact the outer wall between the first sealing ring 20 and the second sealing ring 20, thereby achieving a third layer of sealing, thereby further improving the sealing performance of the tank body 1 and preventing natural gas leakage.

[0048] During the rotation of the rod body 31, the rotating disk 22 fixedly connected to the rod body 31 rotates synchronously. When the rotating disk 22 rotates, the vortex groove 221 applies a force to the second protrusion 233 inside it, causing the locking block 23 to move outward until Figure 3As shown, the threaded bolt is then rotated so that it enters the groove 232, and the nut is then screwed to lock the cover 21. Through the design of the rotating disk 22, the vortex groove 221 and the locking block 23, the cover 21 can be locked only after the operator performs a three-layer seal on the tube 2 by rotating the rod 31. At the same time, when the cover 21 is completely locked, the locking block 23 is locked, the rotating disk 22 is limited, and the rod 31 is also limited. Therefore, when the cover 21 is locked, the sealing component inside the tube 2 cannot be opened;

[0049] When the cover 21 is opened, the limit of the locking block 23 is first released, and then the rod body 31 is rotated in the opposite direction. At this time, the locking block 23 will move into the inside of the cover body 21 under the action of the vortex groove 221. During this process, the screw 32 will drive the piston 342 to move downward. When the piston 342 moves upward, the air in the cavity 345 will be drawn back into the inner cavity 341 under the action of the piston 342. At this time, the sealing ring 344 returns to its original state. It should be noted that by restoring the sealing ring 344 to its original state first, the sealing ring 344 and the sealing ring 1 20 are over-extruded during the opening process of the cover 21, thereby causing the sealing ring 344 to be closely connected with the sealing ring 1 When the piston 342 moves to the limit block 347, the piston 342 will exert a force on the limit block 347, so that the sealing block 34 drives the sleeve 33 to move upward. During this process, the pull rod 334 will contact the extrusion block 212 first. At this time, the pull rod 334 will be squeezed by the extrusion block 212, causing the pull rod 334 to move downward. At this time, the inclined block 333 fixedly connected to the pull rod 334 will be disengaged from the through groove 335 opened by the clamping block 331. At this time, the clamping block 331 will bounce into the limit groove 321 under the elastic force of the spring, so that the sleeve 33 and the screw 32 are re-engaged.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A liquefied natural gas storage structure with a protection mechanism, comprising a tank body (1), a tube body (2) provided on the tank body (1), a cover body (21) connected to the tube body (2), a sleeve body (33) provided inside the cover body (21), the bottom end of the sleeve body (33) being connected to the outer wall of a sealing block (34), a slide seat (336) being connected to the inner wall of the sleeve body (33), a block (331) being provided inside the slide seat (336), a moving rod (332) being connected to the end of the block (331), the moving rod (332) passing through the sleeve body (33) and being slidably connected to the sleeve body (33), the moving rod (332) 2) A spring is provided between the end and the sleeve (33), the movable rod (332) is provided with a through groove (335), the upper end of the movable rod (332) is provided with a pull rod (334), the lower end of the pull rod (334) is connected with an inclined block (333), and the inclined block (333) is arranged inside the through groove (335), the pull rod (334) passes through the cover (21) and is slidably connected to the cover (21), the upper end of the pull rod (334) is provided with an extrusion block (212), and the extrusion block (212) is connected to the inner wall of the cover (21), and the tank body (1) is provided with a sealing component to prevent leakage of liquefied natural gas, characterized in that: The sealing assembly comprises: Sealing ring 1 (20), the sealing ring 1 (20) is connected to the inner wall of the tube body (2), and the sealing ring 1 (20) is provided with two groups; A second sealing ring (210), wherein the second sealing ring (210) is connected to the outer wall of the cover body (21); A rod body (31), wherein a screw rod (32) is provided inside the rod body (31), and a limiting groove (321) and a sliding groove (322) are provided on the outer wall of the screw rod (32), and the rod body (31) passes through the cover body (21) and is rotatably connected to the cover body (21); A sealing block (34) is provided with an inner cavity (341), a piston (342) is provided in the inner cavity (341), the piston (342) is connected to the end of the screw (32), an air supply pipe (343) is provided inside the sealing block (34), the end of the air supply pipe (343) is connected to a sealing ring (344), the sealing ring (344) is provided with a cavity (345), and a guide rod (346) is provided on the outer wall of the sealing block (34).

2. The liquefied natural gas storage structure with a protection mechanism according to claim 1, characterized in that: The rod body (31) passes through the rotating disk (22) and is fixedly connected to the rotating disk (22). The rotating disk (22) is provided with a vortex groove (221).

3. The liquefied natural gas storage structure with a protection mechanism according to claim 2, characterized in that: A locking block (23) is provided inside the cover body (21), a groove (232) is provided at the end of the locking block (23), a protrusion (231) is connected to an outer wall on one side of the locking block (23), and a protrusion (233) is connected to an outer wall on the other side of the locking block (23), and the protrusion (233) is slidably connected to the vortex groove (221).

4. The liquefied natural gas storage structure with a protection mechanism according to claim 3, characterized in that: The inner wall of the cover body (21) is provided with a sliding groove (211), and the sliding groove (211) is slidably connected to the first protrusion (231) to improve the stability of the movement of the locking block (23).

5. The liquefied natural gas storage structure with a protection mechanism according to claim 4, characterized in that: The inner wall of the inner cavity (341) is connected to a limiting block (347), the inner wall of the limiting block (347) is connected to a fixing block (348), and the fixing block (348) is slidably connected to the sliding groove (322).

6. The liquefied natural gas storage structure with a protection mechanism according to claim 5, characterized in that: The outer wall of the tube body (2) is provided with a locking piece (24), and the cover body (21) can be locked by the locking piece (24) cooperating with the locking block (23).

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