A storage container for storing liquefied gas

Abstract

The present invention belongs to the technical field of liquefied gas storage, and particularly relates to a storage container for storing liquefied gas, including a storage device. The storage device is composed of an inner tank, a heat insulation layer and an outer tank, and the heat insulation layer is located between the inner tank and the outer tank. A protective shell is fixedly installed on the outer wall of the outer tank. The protective shell is communicated with the inner tank through a connecting pipe. An auxiliary communication component and a moving component are arranged inside the protective shell. An auxiliary condensation component is arranged above the storage device. A cold pipe is inlaid on the protective shell. By using the auxiliary communication component and the moving component, the gas in the protective shell can push the piston plate to move. The connecting plate is in close contact with the pushing plate. After the abutting block abuts against the contact sensor, a control signal is sent to start the cold pipe, so that the gas in the protective shell is condensed and liquefied, and the liquefied gas can flow back into the inner tank again, without the need to continuously cool the storage device, saving energy.

Description

Technical Field

[0001] The present invention relates to the technical field of liquefied gas storage, and particularly to a storage container for storing liquefied gas. Background Art

[0002] A liquefied natural gas storage tank is a professional device for storing liquefied natural gas. Liquefied natural gas is a kind of natural gas that has been processed by low-temperature condensation, which is convenient for transportation and storage. Liquefied natural gas storage tanks are usually made of high-strength materials such as stainless steel or aluminum alloy to ensure the safe storage of liquefied natural gas under extreme temperature and pressure conditions.

[0003] At present, during the placement process of the storage tank for storing liquefied natural gas, heat exchange occurs with the natural environment, resulting in the evaporation phase change of the statically stored liquefied natural gas over time and then gasification. To reduce the occurrence of this situation, in the prior art, a Chinese patent with the publication number CN220669174U discloses a liquefied natural gas storage tank. This device reduces the gasification of the stored liquefied gas through a water-cooling cycle. However, this continuous working cooling method will consume a large amount of energy and increase the storage cost. In view of this, a storage container for storing liquefied gas is proposed. Summary of the Invention

[0004] The main object of the present invention is to provide a storage container for storing liquefied gas, which can solve the problems raised in the above background art.

[0005] To achieve the above object, a storage container for storing liquefied gas proposed by the present invention includes a storage device. The storage device is composed of an inner tank, a heat insulation layer and an outer tank, and the heat insulation layer is located between the inner tank and the outer tank. A protective shell is fixedly installed on the outer wall of the outer tank. The protective shell is connected to the inner tank through a communication pipe. An auxiliary communication component and a moving component are arranged inside the protective shell. An auxiliary condensation component is arranged above the storage device. A cold pipe is inlaid on the protective shell. The moving component includes:

[0006] A piston plate, which is piston-connected in the protective shell, and a sealing gasket is inlaid on the piston plate;

[0007] Wherein, a storage space for the gasified liquefied gas is formed between one side of the piston plate close to the auxiliary communication component and the protective shell, and the area of this storage space can change with the movement of the piston plate.

[0008] Preferably, an auxiliary sealing assembly is provided on the piston plate. The auxiliary sealing assembly includes an air chamber. A moving plate is connected to the piston in the inner wall of the air chamber. A connecting rod is fixedly connected to the outer wall of the moving plate. The moving plate is elastically connected to the inner surface of the air chamber by a return spring. The air chamber is communicated with the sealing gasket through a trachea. After the liquefied gas vaporizes and enters the protective shell through the connecting pipe, it will squeeze the piston plate to move away from the connecting pipe, and the sealing effect is improved through the sealing gasket. Moreover, when the moving plate is squeezed, the return spring is stretched, and the gas in the air chamber is squeezed into the sealing gasket through the trachea, further improving the sealing effect of the piston plate movement.

[0009] Preferably, the connecting rod penetrates through the piston plate and is slidably connected to the piston plate, and one end of the connecting rod away from the moving plate is fixedly connected to the outer wall of the connecting plate.

[0010] Preferably, when the return spring is in the initial state, there is a gap between the connecting plate and the piston plate.

[0011] Preferably, the auxiliary connecting assembly includes an elastic telescopic rod. A blocking plate is fixedly connected to the telescopic end of the elastic telescopic rod. A round rod is fixedly connected to the outer wall of the telescopic end of the elastic telescopic rod. The round rod is slidably connected in a straight groove. The straight groove is opened on the L-shaped rod. One end of the L-shaped rod away from the round rod is rotatably connected to a rotating roller. The L-shaped rod is hinged to a bracket. A limiting member is fixedly connected to the outer wall of the bracket.

[0012] Preferably, the elastic telescopic rod is fixedly connected to the inner wall of the top of the protective shell, and the bracket is fixedly connected to the inner wall of the top of the protective shell.

[0013] Preferably, a through hole is opened on the outer wall of the connecting pipe, and the through hole is communicated with the protective shell.

[0014] Preferably, during the process of the piston plate moving away from the rotating roller, the telescopic end of the elastic telescopic rod resets and extends, the blocking plate moves to the lower side of the through hole, the round rod slides in the straight groove, and the L-shaped rod rotates around the hinge point of the bracket. At this time, when the gas in the inner tank needs to enter the protective shell again, it needs to overcome the pressure of the elastic telescopic rod and squeeze the blocking plate to move above the through hole before it can enter the protective shell, preventing the gas from freely entering and leaving the empty tank, and frequent cold and heat alternation and pressure changes. Moreover, when the pressure in the protective shell rises abnormally, the gas will not flow back into the inner tank.

[0015] Preferably, the auxiliary condensation assembly includes an electric push rod. A push plate is fixedly connected to the output end of the electric push rod. A contact sensor is embedded and installed on the side of the push plate away from the electric push rod.

[0016] Preferably, a contact block is fixedly connected to the side of the connecting plate away from the piston plate. After the push plate is in close contact with the connecting plate, the contact block is in contact with the contact sensor. The cold pipe is started, and after the gas in the protective shell is condensed and liquefied, the output end of the electric push rod drives the push plate to move. The connecting plate is squeezed, the connecting rod pulls the moving plate to move, the return spring contracts, and the air pipe sucks the gas in the gasket into the air chamber, reducing the wear of the gasket when the piston plate moves back, and after the piston plate squeezes the L rod, the L rod rotates around the hinge point of the bracket, drives the round rod to move, makes the telescopic end of the elastic telescopic rod rise, and the blocking plate moves above the through hole, so that the liquefied gas can flow back into the inner tank through the through hole.

[0017] The present invention provides a storage container for storing liquefied gas. It has the following beneficial effects:

[0018] (1) By using the auxiliary connection component and the moving component, when there is more gas in the protective shell, the gas will push the piston plate to move. After the connecting plate is in close contact with the push plate and the contact block is in contact with the contact sensor, a control signal is sent to start the cold pipe, so that the gas in the protective shell is condensed and liquefied, and the liquefied gas can flow back into the inner tank, without the need to continuously cool the storage device, saving energy.

[0019] (2) Through the cooperation of components such as the elastic telescopic rod, the blocking plate, the round rod, the L rod and the limiting member in the auxiliary connection component, when the piston plate is away from the rotating roller, the elastic telescopic rod resets and elongates, and the blocking plate moves below the through hole, so that the gas in the inner tank needs to overcome the pressure of the elastic telescopic rod to enter the protective shell, preventing the gas from freely entering and leaving, avoiding frequent heat and cold alternation and pressure changes, and when the pressure in the protective shell rises abnormally, it can effectively prevent the gas from flowing back into the inner tank, improving the stability and safety of the storage container.

[0020] (3) By using the moving component, after the liquefied gas is vaporized and enters the protective shell through the connecting pipe, it will squeeze the piston plate to move in the direction away from the connecting pipe, so that the moving plate is squeezed by the gas, the return spring is stretched, and the gas in the squeezed air chamber enters the gasket through the air pipe, further improving the sealing effect of the piston plate movement.

[0021] (4) By using the auxiliary condensation component, the electric push rod drives the push plate to move, the connecting rod pulls the moving plate to move, the return spring contracts, and the air pipe sucks the gas in the gasket into the air chamber, reducing the wear of the gasket when the piston plate moves back and extending the service life of the gasket. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 Schematic diagram of the overall three-dimensional structure of the present invention Figure 1 ;

[0024] Figure 2 Schematic diagram of the overall sectional structure of the present invention;

[0025] Figure 3 For the present invention Figure 2 Schematic diagram of structure A in

[0026] Figure 4 Schematic diagram of the auxiliary connection component structure of the present invention;

[0027] Figure 5 Schematic diagram of the moving component structure of the present invention;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of structure C in

[0029] Figure 7 For the present invention Figure 2 Schematic diagram of structure B in

[0030] Figure 8 Schematic diagram of the overall three-dimensional structure of the present invention Figure 2 ;

[0031] Figure 9 Schematic diagram of the cold pipe installation structure of the present invention.

[0032] Explanation of the reference numerals in the drawings: [[ID=5|1]]<[

[0033] 1. Storage device; 2. Protective shell; 3. Connecting pipe; 4. Auxiliary connection component; 5. Moving component; 6. Auxiliary condensation component; 7. Cold pipe;

[0034] 101. Inner tank; 102. Heat insulation layer; 103. Outer tank;

[0035] 31. Through port;

[0036] 41. Elastic telescopic rod; 42. Sealing plate; 43. Round rod; 44. Straight slot; 45. L-shaped rod; 46. Rotating roller; 47. Bracket; 48. Limiting part;

[0037] 51. Piston plate; 52. Gasket; 53. Auxiliary sealing assembly; 54. Connecting plate; 55. Contact block; 531. Air chamber; 532. Moving plate; 533. Connecting rod; 534. Air pipe

[0038] 61. Electric push rod; 62. Push plate; 63. Contact sensor

[0039] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0041] Please refer to Figures 1-9 , the present invention provides a storage container for storing liquefied gas, including a storage device 1, the storage device 1 is composed of an inner tank 101, a heat insulation layer 102 and an outer tank 103, and the heat insulation layer 102 is located between the inner tank 101 and the outer tank 103. This structural design can effectively reduce the heat exchange between the liquefied gas in the inner tank 101 and the external natural environment, reduce the evaporation phase change rate of the liquefied gas in static storage, and reduce the loss of the liquefied gas. A protective shell 2 is fixedly installed on the outer wall of the outer tank 103, the protective shell 2 is connected to the inner tank 101 through a communication pipe 3, an auxiliary communication component 4 and a moving component 5 are arranged inside the protective shell 2, an auxiliary condensation component 6 is arranged above the storage device 1, and a cold pipe 7 is inlaid and installed on the protective shell 2. By using the cold pipe 7, the protective shell 2 can be effectively cooled, which is convenient for converting the vaporized liquefied gas into liquid later

[0042] In the embodiment of the present invention, the moving component 5 includes a piston plate 51, an auxiliary sealing assembly 53 and a connecting plate 54. The piston plate 51 is piston-connected in the protective shell 2, a gasket 52 is inlaid and installed on the piston plate 51, the auxiliary sealing assembly 53 is arranged on the piston plate 51, and a contact block 55 is fixedly connected to the side of the connecting plate 54 away from the piston plate 51. Among them, a storage space for the vaporized liquefied gas is formed between the side of the piston plate 51 close to the auxiliary communication component 4 and the protective shell 2, and the area of this storage space can change with the movement of the piston plate 51. After the liquefied gas vaporizes and enters the protective shell 2 through the communication pipe 3, it will squeeze the piston plate 51 to move in a direction away from the communication pipe 3, and through the use of the gasket 52, the sealing effect of the piston plate 51 is ensured

[0043] Further, the auxiliary sealing assembly 53 includes an air chamber 531. A piston is connected to a moving plate 532 in the inner wall of the air chamber 531. A connecting rod 533 is fixedly connected to the outer wall of the moving plate 532. The moving plate 532 is elastically connected to the inner surface of the air chamber 531 through a return spring. The air chamber 531 is communicated with the sealing gasket 52 through an air pipe 534. The connecting rod 533 penetrates through the piston plate 51 and is slidably connected to the piston plate 51. One end of the connecting rod 533 away from the moving plate 532 is fixedly connected to the outer wall of the connecting plate 54. During the process of the gas squeezing the piston plate 51 to move, the moving plate 532 is squeezed, the return spring is stretched, and the gas in the air chamber 531 is squeezed into the sealing gasket 52 through the air pipe 534, so that the sealing gasket 52 expands. The sealing gasket 52 is closely attached to the inner wall of the protective shell 2, increasing the moving friction of the piston plate 51 and strengthening the sealing effect at the same time, further improving the sealing effect of the movement of the piston plate 51.

[0044] In an embodiment of the present invention, the auxiliary communication assembly 4 includes an elastic telescopic rod 41. A blocking plate 42 is fixedly connected to the telescopic end of the elastic telescopic rod 41. A round rod 43 is fixedly connected to the outer wall of the telescopic end of the elastic telescopic rod 41. The round rod 43 is slidably connected in a straight groove 44. The straight groove 44 is opened on an L-shaped rod 45. One end of the L-shaped rod 45 away from the round rod 43 is rotatably connected to a rotating roller 46. The L-shaped rod 45 is hinged to a bracket 47. A limiting member 48 is fixedly connected to the outer wall of the bracket 47. The elastic telescopic rod 41 is fixedly connected to the inner wall of the top of the protective shell 2. The bracket 47 is fixedly connected to the inner wall of the top of the protective shell 2. An opening 31 is opened on the outer wall of the communication pipe 3, and the opening 31 is communicated with the protective shell 2. During the process of the piston plate 51 moving away from the rotating roller 46, the telescopic end of the elastic telescopic rod 41 returns and extends. The blocking plate 42 moves to below the opening 31. The round rod 43 slides in the straight groove 44, and the L-shaped rod 45 rotates around the hinge point of the bracket 47. When the piston plate 51 moves away from the rotating roller 46, the elastic telescopic rod 41 returns and extends, and the blocking plate 42 moves to below the opening 31, so that the gas in the inner tank 101 needs to overcome the pressure of the elastic telescopic rod 41 to enter the protective shell 2, preventing the gas from freely entering and leaving, avoiding frequent cold and heat alternation and pressure changes, and effectively preventing the gas from flowing back into the inner tank 101 when the pressure in the protective shell 2 abnormally increases, improving the stability and safety of the storage container.

[0045] Further, when the return spring is in the initial state, there is a gap between the connecting plate 54 and the piston plate 51. The auxiliary condensation assembly 6 includes an electric push rod 61. A push plate 62 is fixedly connected to the output end of the electric push rod 61. A contact sensor 63 is embedded on the side of the push plate 62 away from the electric push rod 61. After the push plate 62 is in close contact with the connecting plate 54, the abutting block 55 abuts against the contact sensor 63. After the abutting block 55 abuts against the contact sensor 63, the contact sensor 63 sends a control signal to start the cold pipe 7. Then, by starting the cold pipe 7, the gas in the protective shell 2 is condensed and liquefied. Then, the output end of the electric push rod 61 drives the push plate 62 to move. The connecting plate 54 is squeezed, and the connecting rod 533 pulls the moving plate 532 to move, causing the return spring to contract. The air pipe 534 sucks the gas in the gasket 52 into the air chamber 531, reducing the wear of the gasket 52 when the piston plate 51 moves back to its original position. And during the reset process of the piston plate 51, when the piston plate 51 squeezes the L rod 45, the L rod 45 rotates around the hinge point of the bracket 47, driving the round rod 43 to move, causing the telescopic end of the elastic telescopic rod 41 to rise, and the blocking plate 42 moves above the through hole 31. Thus, the liquefied gas can flow back into the inner tank 101 through the through hole 31, and there is no need to continuously cool the storage device 1, saving energy.

[0046] It should be noted that the above electrical components are all products of the prior art. Those skilled in the art select, install and complete the circuit debugging operations according to the needs of use to ensure that all electrical appliances can work normally. The components are all common standard parts or parts known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods, and no specific limitations are made here.

[0047] During use, the vaporized liquefied gas will enter the protective shell 2 through the connecting pipe 3 (see Figures 3-4 ), and the gas will squeeze the piston plate 51 to move in a direction away from the connecting pipe 3. During this process, the moving plate 532 is squeezed by the gas (see Figures 5-6 ), causing the return spring to stretch, squeezing the gas in the air chamber 531 to enter the gasket 52 through the air pipe 534, thereby causing the gasket 52 to expand. The gasket 52 is in close contact with the inner wall of the protective shell 2, increasing the moving friction of the piston plate 51 and strengthening the seal at the same time;

[0048] At the same time, during the process of the piston plate 51 moving away from the rotating roller 46, the piston plate 51 gradually disengages from the abutting state with the rotating roller 46 (see Figure 3 and Figure 4), the telescopic end of the elastic telescopic rod 41 resets and elongates, the plugging plate 42 moves below the through port 31, the telescopic end of the elastic telescopic rod 41 elongates and drives the round rod 43 fixed thereto to descend. The round rod 43 is limited by the straight slot 44. Therefore, when the round rod 43 descends, it drives the L-shaped rod 45 to rotate around the hinge point of the bracket 47. At this time, the round rod 43 slides in the straight slot 44, the right end of the L-shaped rod 45 drops, and the left end rises. The limiting member 48 can limit the left end of the L-shaped rod 45 to prevent it from tilting excessively. When the piston plate 51 moves away from the rotating roller 46, under the action of the reset and elongation of the telescopic end of the elastic telescopic rod 41, the plugging plate 42 is moved below the through port 31, so that the gas in the inner tank 101 needs to overcome the pressure of the elastic telescopic rod 41 to enter the protective shell 2, preventing the gas from freely entering and leaving, avoiding frequent cold and heat alternation and pressure changes, and effectively preventing the gas from flowing back into the inner tank 101 when the pressure in the protective shell 2 abnormally increases;

[0049] Meanwhile, during the process that the piston plate 51 is continuously pushed by the gas to move, after the abutting block 55 abuts against the contact sensor 63, the contact sensor 63 sends a control signal to start the cold pipe 7. Then, by starting the cold pipe 7, the gas in the protective shell 2 is condensed and liquefied. Then, the output end of the electric push rod 61 drives the push plate 62 to move. The connecting plate 54 is squeezed, the connecting rod 533 pulls the moving plate 532 to move, the reset spring contracts, and the air pipe 534 sucks the gas in the sealing gasket 52 into the air chamber 531, reducing the wear of the sealing gasket 52 when the piston plate 51 moves back. The output end of the electric push rod 61 pushes the piston plate 51 to perform a reset movement in the direction of the rotating roller 46. During the reset process of the piston plate 51, when the piston plate 51 squeezes the L-shaped rod 45, the L-shaped rod 45 rotates around the hinge point of the bracket 47, drives the round rod 43 to move, makes the telescopic end of the elastic telescopic rod 41 rise, and the plugging plate 42 moves above the through port 31. Thus, the liquefied gas can flow back into the inner tank 101 through the through port 31.

[0050] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A storage container for storing liquefied gas, comprising a storage device (1), characterized in that: The storage device (1) is composed of an inner tank (101), a heat insulation layer (102) and an outer tank (103), and the heat insulation layer (102) is located between the inner tank (101) and the outer tank (103). A protective shell (2) is fixedly installed on the outer wall of the outer tank (103). The protective shell (2) is connected to the inner tank (101) through a connecting pipe (3). A through port (31) is formed on the outer wall of the connecting pipe (3), and the through port (31) is connected to the protective shell (2). An auxiliary connecting component (4) and a moving component (5) are arranged inside the protective shell (2). The auxiliary connecting component (4) includes an elastic telescopic rod (41). A sealing plate (42) is fixedly connected to the telescopic end of the elastic telescopic rod (41). A round rod (43) is fixedly connected to the outer wall of the telescopic end of the elastic telescopic rod (41). The round rod (43) is slidably connected in a straight groove opening (44). The straight groove opening (44) is formed on an L-shaped rod (45). A rotating roller (46) is rotatably connected to one end of the L-shaped rod (45) away from the round rod (43). The L-shaped rod (45) is hinged to a bracket (47). A limiting member (48) is fixedly connected to the outer wall of the bracket (47). An auxiliary condensation component (6) is arranged above the storage device (1). A cold pipe (7) is inlaid and installed on the protective shell (2). The moving component (5) includes: A piston plate (51) which is piston-connected in the protective shell (2), and a sealing gasket (52) is inlaid and installed on the piston plate (51); Wherein, a storage space for the vaporized liquefied gas is formed between one side of the piston plate (51) close to the auxiliary connecting component (4) and the protective shell (2), and the area of this storage space can change with the movement of the piston plate (51). An auxiliary sealing component (53) is arranged on the piston plate (51). The auxiliary sealing component (53) includes an air chamber (531). A moving plate (532) is piston-connected in the inner wall of the air chamber (531). A connecting rod (533) is fixedly connected to the outer wall of the moving plate (532). The moving plate (532) is elastically connected to the inner surface of the air chamber (531) through a return spring. The air chamber (531) is connected to the sealing gasket (52) through an air pipe (534). During the process of the piston plate (51) moving away from the rotating roller (46), the telescopic end of the elastic telescopic rod (41) resets and extends, the sealing plate (42) moves to below the through port (31), the round rod (43) slides in the straight groove opening (44), and the L-shaped rod (45) rotates around the hinge point of the bracket (47). The auxiliary condensation component (6) includes an electric push rod (61). A push plate (62) is fixedly connected to the output end of the electric push rod (61). A contact sensor (63) is inlaid and installed on one side of the push plate (62) away from the electric push rod (61). A butting block (55) is fixedly connected to one side of a connecting plate (54) away from the piston plate (51). After the push plate (62) is in close contact with the connecting plate (54), the butting block (55) abuts against the contact sensor (63).

2. A storage container for storing liquefied gas according to claim 1, characterized in that: The connecting rod (533) penetrates through the piston plate (51) and is slidably connected to the piston plate (51), and one end of the connecting rod (533) away from the moving plate (532) is fixedly connected to the outer wall of the connecting plate (54).

3. A storage container for storing liquefied gas according to claim 2, characterized in that: When the return spring is in the initial state, there is a gap between the connecting plate (54) and the piston plate (51).

4. A storage container for storing liquefied gas according to claim 1, characterized in that: The elastic telescopic rod (41) is fixedly connected to the top inner wall of the protective shell (2), and the bracket (47) is fixedly connected to the top inner wall of the protective shell (2).

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