Natural gas storage tank

Abstract

The utility model relates to the technical field of natural gas storage tanks, and discloses a natural gas storage tank which comprises a base, a storage tank body is arranged in the base, the top of the storage tank body is in threaded connection with a shell, and a pressure relief assembly is arranged in the shell. The pressure relief assembly comprises a fixing column, the two ends of the fixing column are fixedly connected into the shell, an open groove is formed in the shell, a connecting rod is slidably connected into the shell, and a piston is fixedly connected to one end of the connecting rod. According to the automatic pressure relief device, gas enters the shell through the open groove, then the gas pushes the piston to enable the piston to slide in the fixing column, then the piston drives the first cover plate and the second cover plate to be lifted through the connecting rod, the gas can be rapidly exhausted from the shell through the open groove, and the effect of automatic pressure relief when the pressure is too high is achieved; the problem that danger occurs when the internal pressure of the natural gas storage tank is too high and rapid exhaust cannot be achieved is solved, and the safety of the natural gas storage tank is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas storage tank technical field especially relates to a natural gas storage tank. BACKGROUND

[0002] The storage tank is a kind of container for storing liquid, gas or other substances, usually designed as airtight structure to prevent external pollution or leakage, to ensure that in the case of short-term interruption or unstable supply of natural gas supply, the stored natural gas can be dispatched in time, avoid the influence to consumer. Especially in the area where the natural gas supply source depends on pipeline transportation or liquefied natural gas import, so natural gas storage tank is needed to provide a buffer to ensure the stability of supply.

[0003] Natural gas storage tank can be divided into various types, respectively, atmospheric storage tank, atmospheric storage tank and high-pressure storage tank, etc., the type of natural gas storage tank is different according to storage mode (liquid, gaseous, etc.), pressure (atmospheric pressure, high pressure, etc.) and storage location (ground, underground, etc.), wherein atmospheric storage tank is mainly used to store natural gas at normal temperature and pressure, usually used for liquefied natural gas (LNG) or low-pressure natural gas storage.

[0004] However, the natural gas storage tank in the prior art often lacks efficient automatic pressure relief device when dealing with the case that the internal pressure of storage tank is too high. When the internal pressure of storage tank is too high, the rapid discharge of gas cannot be guaranteed in time, which may cause damage to equipment and even cause safety accidents. In addition, during the transportation of natural gas storage tank, due to the inconsistency of the shape and size of the storage tank, the traditional fixing device often cannot ensure the stability of the storage tank during transportation, which is easy to cause the shaking or deviation of the storage tank, increase the risk in transportation. Therefore, how to design a device that can quickly exhaust, effectively relieve pressure and stably fix the storage tank during transportation has become a key problem to improve the safety and practicality of natural gas storage tank. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a natural gas storage tank, to improve the problem of danger when the internal pressure of natural gas storage tank is too high and cannot be quickly exhausted.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a natural gas storage tank, comprising a base, the base is internally provided with a storage tank, the top of the storage tank is threadedly connected with a shell, the shell is internally provided with a pressure relief assembly;

[0007] The pressure relief assembly comprises a fixed column, both ends of which are fixedly connected in the shell, a slot is formed in the shell, a connecting rod is slidably connected in the shell, one end of the connecting rod is fixedly connected with a piston, the piston is slidably connected in the fixed column, a cover plate one is fixedly connected to the outer wall of the connecting rod, the other end of the connecting rod is fixedly connected with a cover plate two, a sealing assembly is arranged at the bottom of the cover plate two, and a reset assembly is arranged on the outer wall of the connecting rod.

[0008] As a further description of the above technical scheme:

[0009] The sealing assembly comprises a sealing ring two, the top of the sealing ring two is fixedly connected to the bottom of the cover plate two, the outer wall of the sealing ring two is attached to the inner wall of the shell, the bottom of the cover plate one is fixedly connected with a sealing ring one, and the bottom of the sealing ring one is attached to the inner wall of the shell.

[0010] As a further description of the above technical scheme:

[0011] The reset assembly comprises a first spring, the first spring is sleeved on the outer wall of the connecting rod, one end of the first spring is fixedly connected in the fixed column, and the other end of the first spring is fixedly connected to the top of the piston.

[0012] As a further description of the above technical scheme:

[0013] The base is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a clamping plate one, one side of the clamping plate one is fixedly connected with a telescopic rod one, and one end of the telescopic rod one is fixedly connected with a clamping plate two.

[0014] As a further description of the above technical scheme:

[0015] The telescopic rod one is sleeved with a second spring, one end of the second spring is fixedly connected to one side of the clamping plate two, and the other end of the second spring is fixedly connected to one side of the clamping plate one.

[0016] As a further description of the above technical scheme:

[0017] Both ends of the clamping plate one are rotatably connected with a connecting block one, one side of the connecting block one is fixedly connected with a telescopic rod two, one end of the telescopic rod two is fixedly connected with a connecting block two, and one side of the connecting block two is rotatably connected with a clamping plate three.

[0018] As a further description of the above technical scheme:

[0019] One side of the clamping plate three is fixedly connected with a flexible plate, and the flexible plate is slidably connected in the clamping plate two.

[0020] As a further description of the above technical scheme:

[0021] The third spring is fixedly connected at one end to one side of the connecting block one, and fixedly connected at the other end to one side of the connecting block two.

[0022] The utility model has the advantages of the following:

[0023] 1. In the utility model, firstly, gas enters the shell through the slot, then the gas pushes the piston to slide in the fixed column, then the piston lifts the cover plate one and the cover plate two through the connecting rod, and further separates the sealing ring two and the sealing ring one from the shell, so that the gas can be quickly discharged from the shell through the slot, achieving the effect of self-pressure relief when the pressure is too high, solving the problem of danger when the internal pressure of the natural gas storage tank is too high and cannot be quickly discharged, and improving the safety of the natural gas storage tank.

[0024] 2. In the utility model, the clamping plate one is attached to the outer wall of the storage tank through the clamping plate two, and the clamping plate one and the clamping plate two are supported by the tension of the second spring, so that the clamping plate two is tightly attached to the outer wall of the storage tank, and the clamping plate three on both sides of the clamping plate one is supported by the tension of the third spring, so that the clamping plate three is tightly attached to the outer wall of the storage tank, achieving the effect of fixing the natural gas storage tank during transportation, solving the problem of inconvenient fixing of the storage tank due to inconsistent size during transportation, and improving the practicability of the natural gas storage tank. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A perspective view of a natural gas storage tank is proposed for the utility model;

[0026] Figure 2 A shell internal structure diagram of a natural gas storage tank is proposed for the utility model;

[0027] Figure 3 A clamping plate one structure diagram of a natural gas storage tank is proposed for the utility model.

[0028] LEGEND:

[0029] 1. Base; 2. Storage tank; 3. Shell; 4. Fixed column; 5. Slot; 6. Connecting rod; 7. Cover plate one; 8. Sealing ring one; 9. Piston; 10. First spring; 11. Cover plate two; 12. Sealing ring two; 13. Electric push rod; 14. Clamping plate one; 15. Telescopic rod one; 16. Second spring; 17. Clamping plate two; 18. Connecting block one; 19. Connecting block two; 20. Clamping plate three; 21. Flexible plate; 22. Telescopic rod two; 23. Third spring. DETAILED DESCRIPTION

[0030] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] With reference to Figure 1 And Figure 2 An embodiment provided by the present application: a natural gas storage tank, comprising a base 1, the base 1 is internally provided with a storage tank 2, the top of the storage tank 2 is connected with a shell 3 through threads, ensuring the sealing and stability between the storage tank 2 and the shell 3.

[0032] The pressure relief assembly comprises a fixed column 4, the fixed column 4 is fixedly connected at both ends in the shell 3, ensuring that the fixed column 4 remains stable during the entire pressure relief process, and providing support for other components. A slot 5 is formed in the shell 3, serving as a gas discharge channel for the flow and discharge of gas. A connecting rod 6 is slidingly connected in the shell 3, one end of the connecting rod 6 is fixedly connected with a piston 9, the piston 9 is slidingly connected in the fixed column 4, ensuring smooth movement of the piston 9. The sliding of the piston 9 helps to adjust the internal pressure, and drives the movement of cover plate one 7 and cover plate two 11 through the connecting rod 6, the cover plate one 7 and the cover plate two 11 are fixedly connected through the connecting rod 6, playing a sealing and exhaust role. When the gas pressure is too high, the action of the cover plate one 7 and the cover plate two 11 can effectively open the exhaust channel. The bottom of the cover plate two 11 is provided with a sealing assembly, the sealing assembly comprises a sealing ring two 12, the top of the sealing ring two 12 is fixedly connected to the bottom of the cover plate two 11, ensuring the sealing between the cover plate two 11 and the shell 3, preventing gas leakage. The outer wall of the sealing ring two 12 is in close contact with the inner wall of the shell 3, effectively preventing gas leakage, and ensuring that the gas is smoothly discharged through the slot 5 during pressure relief. The bottom of the cover plate one 7 is fixedly connected with a sealing ring one 8, the bottom of the sealing ring one 8 is in close contact with the inner wall of the shell 3, further enhancing the sealing effect and avoiding any possible gas leakage. The reset assembly comprises a first spring 10, the first spring 10 is sleeved on the outer wall of the connecting rod 6, used for resetting the piston 9 and the cover plate one 7 and the cover plate two 11 after pressure relief. One end of the first spring 10 is fixedly connected in the fixed column 4, and the other end is fixedly connected to the top of the piston 9, ensuring that the piston 9 can be automatically reset when the gas pressure returns to normal, the sealing ring is in close contact with the inner wall of the shell 3, thereby closing the exhaust channel and ensuring the sealing state of the storage tank 2;

[0033] Specifically, when the pressure inside the storage tank 2 is too high, the gas will flow into the inside of the shell 3 through the slot 5, quickly guiding the gas into the cavity space of the shell 3. With the entry of the gas, the pressure of the gas pushes the piston 9 to slide outward, and the piston 9 slides smoothly in the fixed column 4 in the axial direction. When the piston 9 moves, it drives the cover plate one 7 and the cover plate two 11 to be lifted synchronously through the connecting rod 6, so that the sealing ring one 8 and the sealing ring two 12 between the two are separated from the shell 3, thereby forming a safe gas discharge channel. At this time, the excessive gas pressure is quickly released through the slot 5, avoiding the safety hazard or the risk of rupture of the storage tank 2 due to excessive pressure. When the pressure inside the storage tank 2 gradually returns to normal, the elastic force of the first spring 10 begins to play a role, pushing the piston 9 to reset to the original position, while driving the cover plate one 7 to return to the initial closed state. The tension of the first spring 10 ensures that the entire device can quickly return to the normal working state, so that the sealing ring one 8 and the sealing ring two 12 are in close contact with the shell 3 again, closing the gas discharge channel and ensuring the sealing and safety of the storage tank 2.

[0034] Referring to Figure 3 The base 1 is fixedly connected with an electric push rod 13 inside, and the output end of the electric push rod 13 is fixedly connected with a clamping plate one 14. The electric push rod 13 works by pushing the clamping plate one 14 to provide the necessary mechanical power to realize the action of the clamping plate. One side of the clamping plate one 14 is fixedly connected with a telescopic rod one 15, and one end of the telescopic rod one 15 is fixedly connected with a clamping plate two 17. The telescopic rod one 15 adjusts the relative position of the clamping plate two 17 according to the movement of the clamping plate one 14, so as to ensure that the clamping plate two 17 can adapt to the shape of the storage tank 2 and play a fastening role.

[0035] The outer wall of the telescopic rod one 15 is sleeved with the second spring 16, the tension of the second spring 16 keeps the clamping plate two 17 connected with the clamping plate one 14 with a certain pressing force, ensuring that the clamping plate two 17 is tightly attached to the outer wall of the storage tank 2. One end of the second spring 16 is fixedly connected to one side of the clamping plate two 17, and the other end is fixedly connected to one side of the clamping plate one 14. Through the elastic force of the spring, the clamping plate two 17 can effectively adhere to and fix the storage tank 2. The clamping plate one 14 is rotatably connected with the connecting block one 18 at both ends, the connecting block one 18 is fixedly connected with the telescopic rod two 22 at one side, and the telescopic rod two 22 is fixedly connected with the connecting block two 19 at one end. The rotatable connection design of the connecting block one 18 and the connecting block two 19 ensures that the clamping plate one 14 can adapt to the shape of the storage tank 2 and effectively clamp it. The clamping plate three 20 is rotatably connected to one side of the connecting block two 19, and the clamping plate three 20 further enhances the clamping force and cooperates with the clamping plate two 17 to fix the outer wall of the storage tank 2. The clamping plate three 20 is fixedly connected with the flexible plate 21 at one side, and the flexible plate 21 is slidably connected inside the clamping plate two 17. The design of the flexible plate 21 allows the clamping plate three 20 to flexibly adapt to changes in the shape of the storage tank 2 and maintain a constant clamping pressure, preventing the storage tank 2 from slipping during transportation. The sliding connection of the flexible plate 21 allows it to move freely under the guidance of the clamping plate two 17, ensuring the flexibility and adaptability of the entire fixing system. The outer wall of the telescopic rod two 22 is sleeved with the third spring 23, which provides elastic support between the connecting block one 18 and the connecting block two 19. When the clamping plate three 20 contacts the outer wall of the storage tank 2, the elastic force of the third spring 23 can adjust the clamping force of the clamping plate three 20, ensuring that the clamping plate three 20 is in constant close contact. One end of the third spring 23 is fixedly connected to one side of the connecting block one 18, and the other end is fixedly connected to one side of the connecting block two 19, ensuring the stability and effective support of the spring.

[0036] Specifically, when transporting the storage tank 2, the storage tank 2 is accurately placed inside the base 1, ensuring its stability during transportation. Then, the output end of the electric push rod 13 extends and starts to work, driving the clamping plate one 14 to move smoothly, and the clamping plate one 14 gradually approaches the outer wall of the storage tank 2. When the clamping plate one 14 moves to the appropriate position, it perfectly fits with the clamping plate two 17, forming a firm fixing structure. The clamping plate one 14 and the clamping plate two 17 are supported by the tension of the second spring 16, so that the clamping plate two 17 can always tightly adhere to the outer wall of the storage tank 2, not only enhancing the stability of the fixing, but also effectively avoiding the displacement of the storage tank 2 due to shaking or external interference during transportation. In order to further improve the fixing effect, the clamping plate three 20 on both sides of the clamping plate one 14 is supported by the elastic tension of the third spring 23, so that the clamping plate three 20 also tightly adheres to the outer wall of the storage tank 2, enhancing the gripping force and friction force between the clamping plate and the storage tank 2, and further improving the stability. At the same time, the clamping plate three 20 and the clamping plate two 17 are accurately limited by the flexible plate 21, which can adapt to the slight changes in the shape of the storage tank 2, so that the clamping plate three 20 can always maintain close contact with the outer wall of the storage tank 2 during the entire transportation process, avoiding the position deviation of the storage tank 2 due to vibration or external force.

[0037] Working principle: when using the natural gas storage tank, first, when the pressure inside the storage tank 2 is too high, the gas enters the housing 3 through the slot 5, then the gas pushes the piston 9 to slide in the fixed column 4, then the piston 9 drives the cover plate one 7 and the cover plate two 11 to lift through the connecting rod 6, and then the sealing ring two 12 and the sealing ring one 8 are separated from the housing 3, so that the gas can be quickly discharged from the housing 3 through the slot 5, when the pressure inside the storage tank 2 returns to normal, the piston 9 and the cover plate one 7 are reset by the tension of the first spring 10, achieving the effect of self-pressure relief when the pressure is too high.

[0038] When transporting the storage tank 2, the storage tank 2 is placed inside the base 1, then the output end of the electric push rod 13 extends to drive the clamping plate one 14 to move, the clamping plate one 14 is adhered to the outer wall of the storage tank 2 through the clamping plate two 17, and at the same time, the clamping plate two 17 is tightly adhered to the outer wall of the storage tank 2 through the tension support of the second spring 16 between the clamping plate one 14 and the clamping plate two 17, and the clamping plate three 20 on both sides of the clamping plate one 14 is supported by the tension of the third spring 23, so that the clamping plate three 20 is tightly adhered to the outer wall of the storage tank 2. Since the clamping plate three 20 and the clamping plate two 17 are limited by the flexible plate 21, the clamping plate three 20 can always adhere to the outer wall of the storage tank 2, achieving the effect of fixing the natural gas storage tank during transportation.

[0039] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A natural gas storage tank comprising a base (1), characterised in that: The base (1) is internally provided with a storage tank (2), the top of the storage tank (2) is threadedly connected with a shell (3), and the shell (3) is internally provided with a pressure relief assembly; The pressure relief assembly comprises a fixed column (4), both ends of the fixed column (4) are fixedly connected in the shell (3), a slot (5) is formed in the shell (3), a connecting rod (6) is slidably connected in the shell (3), one end of the connecting rod (6) is fixedly connected with a piston (9), the piston (9) is slidably connected in the fixed column (4), a cover plate one (7) is fixedly connected to the outer wall of the connecting rod (6), the other end of the connecting rod (6) is fixedly connected with a cover plate two (11), the bottom of the cover plate two (11) is provided with a sealing assembly, and the outer wall of the connecting rod (6) is sleeved with a reset assembly.

2. A natural gas storage tank as claimed in claim 1, wherein: The sealing assembly comprises a sealing ring two (12), the top of the sealing ring two (12) is fixedly connected to the bottom of the cover plate two (11), the outer wall of the sealing ring two (12) is fitted with the inner wall of the shell (3), and the bottom of the cover plate one (7) is fixedly connected with a sealing ring one (8).

3. A natural gas storage tank as defined in claim 1, wherein: The reset assembly comprises a first spring (10), the first spring (10) is sleeved on the outer wall of the connecting rod (6), one end of the first spring (10) is fixedly connected in the fixed column (4), and the other end of the first spring (10) is fixedly connected to the top of the piston (9).

4. A natural gas storage tank as defined in claim 1, wherein: The base (1) is internally provided with a storage tank (2), the top of the storage tank (2) is threadedly connected with a shell (3), and the shell (3) is internally provided with a pressure relief assembly; 5. A natural gas storage tank as defined in claim 4, wherein: The second spring (16) is sleeved on the outer wall of the telescopic rod one (15), one end of the second spring (16) is fixedly connected to one side of the clamping plate two (17), and the other end of the second spring (16) is fixedly connected to one side of the clamping plate one (14).

6. A natural gas storage tank as defined in claim 4, wherein: The clamping plate one (14) is rotatably connected with a connecting block one (18) at both ends, one side of the connecting block one (18) is fixedly connected with a telescopic rod two (22), one end of the telescopic rod two (22) is fixedly connected with a connecting block two (19), and one side of the connecting block two (19) is rotatably connected with a clamping plate three (20).

7. A natural gas storage tank as defined in claim 6, wherein: One side of the clamping plate three (20) is fixedly connected with a flexible plate (21), and the flexible plate (21) is slidably connected in the clamping plate two (17).

8. A natural gas storage tank as defined in claim 6, wherein: The third spring (23) is sleeved on the outer wall of the telescopic rod two (22), one end of the third spring (23) is fixedly connected to one side of the connecting block one (18), and the other end of the third spring (23) is fixedly connected to one side of the connecting block two (19).

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