An ultra-low temperature liquefied gas storage tank having a pressure relief mechanism

Abstract

The utility model relates to gas storage technical field, and disclose a kind of ultra-low temperature liquefied gas storage tank with pressure relief mechanism, the ultra-low temperature liquefied gas storage tank with pressure relief mechanism, including support, support is fixedly installed with gas storage tank, gas storage tank is fixedly installed with suction pipe, suction pipe is fixedly installed with control valve, gas storage tank is provided with pressure relief assembly, the pressure relief assembly includes hopper.This ultra-low temperature liquefied gas storage tank with pressure relief mechanism, to prevent the rupture of storage tank due to overpressure by being provided with pressure relief assembly, when the pressure in tank exceeds set threshold value, the assembly cooperation gas pushes plug plate to overcome spring resistance and moves up, sliding rod slides in hollow screw rod, so that rubber block is separated from threaded block, gas is filtered after filter plate and is discharged from the round hole on shell, by rotating hollow screw rod adjustment spring pre-tightening force, pressure relief pressure value can be set, the symmetrical distribution of multiple pressure relief assemblies ensures that pressure relief is uniform.

Description

Technical Field

[0001] This utility model relates to the field of gas storage technology, specifically to an ultra-low temperature liquefied gas storage tank with a pressure relief mechanism. Background Technology

[0002] Cryogenic liquefied gases such as liquid nitrogen, liquid oxygen, and liquid helium are widely used in medical cryopreservation and scientific research. During storage, these gases are affected by factors such as changes in ambient temperature, direct sunlight, and shaking of the tank, causing them to continuously absorb heat and vaporize, resulting in a continuous increase in pressure inside the tank.

[0003] A cryogenic liquefied gas storage tank with a pressure relief mechanism mainly consists of a tank body, a pressure monitoring system, an intelligent control unit, a multi-stage pressure relief device, and an insulation layer. The tank body employs a double-layer vacuum insulation structure and is used to store cryogenic liquefied gas. The pressure monitoring system comprises a high-precision pressure sensor and a signal acquisition module, which monitors pressure changes within the tank in real time. The intelligent control unit receives pressure monitoring data and determines whether to trigger pressure relief through a preset program. The multi-stage pressure relief device includes a pilot-operated safety valve and a rupture disc, allowing for phased pressure relief based on the degree of pressure increase. The insulation layer uses a high-insulation-performance material to reduce the transfer of external heat.

[0004] However, the above-mentioned equipment has obvious shortcomings in use. Traditional storage tanks mostly use single-stage pressure relief valves, and the pressure relief is fixed and cannot be adjusted, which cannot adapt to the storage pressure requirements of different gases. Moreover, pressure fluctuations are easily generated during pressure relief, which leads to increased boiling of the liquid inside the tank. In view of this, we propose an ultra-low temperature liquefied gas storage tank with a pressure relief mechanism. Utility Model Content

[0005] The purpose of this invention is to provide a cryogenic liquefied gas storage tank with a pressure relief mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A cryogenic liquefied gas storage tank with a pressure relief mechanism includes a support frame, a gas storage tank fixedly mounted on the support frame, a suction pipe fixedly mounted on the gas storage tank, a control valve fixedly mounted on the suction pipe, and a pressure relief assembly provided on the gas storage tank. The pressure relief assembly includes:

[0008] A funnel is fixedly installed on the gas storage tank. A cylinder is fixedly installed at the bottom of the funnel. A filter plate is fixedly installed on the cylinder. A threaded block is fixedly installed at the top of the funnel. A hollow threaded rod is provided on the outside of the threaded block.

[0009] The outer shell is threaded onto the hollow threaded rod, and the outer shell is threaded onto the threaded block. The outer shell has a round hole. A knob cap is threaded onto the hollow threaded rod, and the knob cap has an air vent.

[0010] A limiting block is fixedly installed at the bottom of the hollow threaded rod. A spring is fixedly installed at the bottom of the limiting block, and a blocking plate is fixedly installed at the other end of the spring. A sliding rod is fixedly installed above the blocking plate, and a rubber block is fixedly installed at the bottom of the blocking plate.

[0011] In a further embodiment, multiple sets of the funnel, cylinder, filter plate, threaded block, hollow threaded rod, outer shell, round hole, knob cap, air outlet, limit block, spring, blocking plate, slide rod, and rubber block are provided.

[0012] In a further embodiment, the filter plate and threaded block are disposed inside the gas storage tank, and the knob cap and air outlet are disposed on the top of the outer casing.

[0013] In a further embodiment, the slide bar slides inside the hollow threaded rod, the slide bar is located inside the spring, and the rubber block is attached to the top of the threaded block.

[0014] In a further embodiment, the funnel is provided with an auxiliary component, which includes a mounting block. The mounting block is fixedly mounted on the funnel, a protective shell is snapped onto the top of the mounting block, an air outlet pipe is fixedly mounted on the protective shell, a filter block is fixedly mounted inside the protective shell, a collection box is snapped onto the bottom of the mounting block, and a collection hole is provided on the mounting block.

[0015] In a further embodiment, multiple sets of the mounting block, protective shell, air outlet pipe, filter block, collection box, and collection hole are provided.

[0016] In a further embodiment, the threaded block, hollow threaded rod, outer shell, round hole, knob cap, vent hole, limit block, spring, blocking plate, slide rod and rubber block are disposed inside the protective shell, and the collection hole is disposed directly above the collection box.

[0017] Compared with the prior art, this utility model provides an ultra-low temperature liquefied gas storage tank with a pressure relief mechanism, which has the following beneficial effects:

[0018] 1. This cryogenic liquefied gas storage tank with a pressure relief mechanism is equipped with a pressure relief component to prevent the storage tank from rupturing due to overpressure. When the pressure inside the tank exceeds a set threshold, the component, in conjunction with the gas, pushes the blocking plate upward against the spring resistance. The slide rod slides inside the hollow threaded rod, causing the rubber block to disengage from the threaded block. The gas is filtered by the filter plate and discharged from the round hole on the outer shell. The pressure relief value can be set by rotating the hollow threaded rod to adjust the spring preload. The symmetrical distribution of multiple pressure relief components ensures uniform pressure relief.

[0019] 2. This cryogenic liquefied gas storage tank with a pressure relief mechanism is equipped with an auxiliary component to reduce the impact of pressure relief on the surrounding environment. This component, together with the protective shell, encloses the pressure relief component. The internal filter block adsorbs impurities such as oil mist and water vapor in the depressurized gas, ensuring that the gas is discharged purified. The collection hole on the mounting block is aligned with the collection box. When the cryogenic gas is depressurized, the water vapor in the air condenses into droplets and flows into the collection box through the collection hole, preventing the condensate from dripping and corroding the support or the ground. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0022] Figure 3 This is a cross-sectional view of part of the structure of this utility model;

[0023] Figure 4 This is a cross-sectional schematic diagram of the protective shell structure of this utility model;

[0024] Figure 5 This is a cross-sectional view of the collection box structure of this utility model;

[0025] Figure 6 This is a schematic diagram of a portion of the pressure relief component of this utility model;

[0026] Figure 7 This is a schematic diagram of the closed structure of the pressure relief component of this utility model;

[0027] Figure 8 This is a schematic diagram of the pressure relief component structure of this utility model.

[0028] Explanation of icon numbers:

[0029] 1. Support frame; 2. Gas storage tank; 3. Suction pipe; 4. Control valve;

[0030] 5. Pressure relief assembly; 51. Funnel; 52. Cylinder; 53. Filter plate; 54. Threaded block; 55. Hollow threaded rod; 56. Housing; 57. Round hole; 58. Knob cap; 59. Vent; 510. Limiting block; 511. Spring; 512. Blocking plate; 513. Slide rod; 514. Rubber block;

[0031] 6. Auxiliary components; 61. Mounting block; 62. Protective shell; 63. Air outlet pipe; 64. Filter block; 65. Collection box; 66. Collection hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0034] Please see Figures 1-8 This utility model provides a technical solution:

[0035] A cryogenic liquefied gas storage tank with a pressure relief mechanism includes a support 1, a gas storage tank 2 fixedly installed on the support 1, a gas extraction pipe 3 fixedly installed on the gas storage tank 2, and a control valve 4 fixedly installed on the gas extraction pipe 3.

[0036] In one embodiment of this utility model, a pressure relief assembly 5 is provided on the gas storage tank 2. The pressure relief assembly 5 includes a funnel 51, which is fixedly installed on the gas storage tank 2. A cylinder 52 is fixedly installed at the bottom of the funnel 51, and a filter plate 53 is fixedly installed on the cylinder 52. A threaded block 54 is fixedly installed at the top of the funnel 51. A hollow threaded rod 55 is provided on the outside of the threaded block 54. A housing 56 is threaded onto the hollow threaded rod 55 and threaded onto the threaded block 54. A circular hole 57 is provided on the housing 56. A knob cap 58 is threaded onto the hollow threaded rod 55 and has an air outlet 59. A limit block 510 is fixedly installed at the bottom of the hollow threaded rod 55, and a spring 511 is fixedly installed at the bottom of the limit block 510. At one end of the spring 511, a blocking plate 512 is fixedly installed at the other end. A sliding rod 513 is fixedly installed above the blocking plate 512. A rubber block 514 is fixedly installed at the bottom of the blocking plate 512. Multiple sets of funnel 51, cylinder 52, filter plate 53, threaded block 54, hollow threaded rod 55, outer shell 56, round hole 57, knob cap 58, air outlet 59, limit block 510, spring 511, blocking plate 512, sliding rod 513 and rubber block 514 are provided. The filter plate 53 and threaded block 54 are located inside the air storage tank 2. The knob cap 58 and air outlet 59 are located above the outer shell 56. The sliding rod 513 slides inside the hollow threaded rod 55. The sliding rod 513 is located inside the spring 511. The rubber block 514 is attached to the top of the threaded block 54.

[0037] In this embodiment, under normal conditions, the spring 511 pushes the rubber block 514 to tightly adhere to the threaded block 54, forming a seal. When the pressure inside the gas tank 2 exceeds the set threshold, the gas pushes the blocking plate 512 upward, overcoming the resistance of the spring 511 and moving upward. The slide rod 513 slides synchronously inside the hollow threaded rod 55, and the rubber block 514 disengages from the threaded block 54. After being filtered by the filter plate 53, the gas is discharged through the round hole 57 of the outer shell 56, the hollow threaded rod 55, and the air outlet 59 of the knob cap 58. At the same time, the preload of the spring 511 can be adjusted by rotating the hollow threaded rod 55, thereby setting different pressure relief values. The symmetrical distribution of multiple pressure relief components 5 ensures that the pressure relief process is uniform and stable. When the pressure inside the tank drops to a safe value, the spring 511 pushes the blocking plate 512 to reset, and the rubber block 514 re-adheres to the threaded block 54, restoring the sealing state.

[0038] In one embodiment of this utility model, an auxiliary component 6 is provided on the funnel 51. The auxiliary component 6 includes a mounting block 61. The mounting block 61 is fixedly mounted on the funnel 51. A protective shell 62 is snapped onto the top of the mounting block 61. An air outlet pipe 63 is fixedly mounted on the protective shell 62. A filter block 64 is fixedly mounted inside the protective shell 62. A collection box 65 is snapped onto the bottom of the mounting block 61. A collection hole 66 is provided on the mounting block 61. Multiple sets of mounting blocks 61, protective shells 62, air outlet pipes 63, filter blocks 64, collection boxes 65, and collection holes 66 are provided. Threaded blocks 54, hollow threaded rods 55, outer shells 56, round holes 57, knob caps 58, air outlets 59, limiting blocks 510, springs 511, blocking plates 512, sliding rods 513, and rubber blocks 514 are provided inside the protective shell 62. The collection hole 66 is located directly above the collection box 65.

[0039] In this embodiment, while depressurizing, the depressurization component 5 is wrapped by the protective shell 62, and the filter block 64 adsorbs impurities such as oil mist and water vapor in the depressurized gas, purifying the discharged gas. When the ultra-low temperature gas is depressurized, the water vapor in the air condenses into droplets and flows into the collection box 65 through the collection hole 66, preventing the condensate from dripping and corroding the support 1 or the ground, and reducing the impact of depressurization on the surrounding environment.

[0040] All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art. The supporting structures of the hydraulic drive structure appearing in this application, such as hydraulic tanks and hydraulic pumps, are existing equipment and will not be described in detail here.

[0041] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A cryogenic liquefied gas storage tank with a pressure relief mechanism, comprising a support (1), a gas storage tank (2) fixedly mounted on the support (1), a gas extraction pipe (3) fixedly mounted on the gas storage tank (2), and a control valve (4) fixedly mounted on the gas extraction pipe (3), characterized in that: The gas storage tank (2) is equipped with a pressure relief assembly (5), which includes: Funnel (51), a funnel (51) is fixedly installed on the gas storage tank (2), a cylinder (52) is fixedly installed at the bottom of the funnel (51), a filter plate (53) is fixedly installed on the cylinder (52), a threaded block (54) is fixedly installed at the top of the funnel (51), and a hollow threaded rod (55) is provided on the outside of the threaded block (54). The outer shell (56) is threaded onto the hollow threaded rod (55), the outer shell (56) is threaded onto the threaded block (54), the outer shell (56) has a round hole (57), the hollow threaded rod (55) has a knob cap (58) threaded onto the hollow threaded rod (55), and the knob cap (58) has an air vent (59). Limiting block (510): The bottom of the hollow threaded rod (55) is fixedly installed with limiting block (510). One end of spring (511) is fixedly installed at the bottom of limiting block (510). The other end of spring (511) is fixedly installed with blocking plate (512). A sliding rod (513) is fixedly installed above blocking plate (512). A rubber block (514) is fixedly installed at the bottom of blocking plate (512).

2. A cryogenic liquefied gas storage tank with a pressure relief mechanism according to claim 1, characterized in that: The funnel (51), cylinder (52), filter plate (53), threaded block (54), hollow threaded rod (55), outer shell (56), round hole (57), knob cap (58), air outlet (59), limit block (510), spring (511), blocking plate (512), slide bar (513) and rubber block (514) are provided in multiple sets.

3. A cryogenic liquefied gas storage tank with a pressure relief mechanism according to claim 1, characterized in that: The filter plate (53) and threaded block (54) are located inside the gas storage tank (2), and the knob cap (58) and air outlet (59) are located above the outer shell (56).

4. A cryogenic liquefied gas storage tank with a pressure relief mechanism according to claim 1, characterized in that: The slide rod (513) slides inside the hollow threaded rod (55), the slide rod (513) is located inside the spring (511), and the rubber block (514) is attached to the top of the threaded block (54).

5. A cryogenic liquefied gas storage tank with a pressure relief mechanism according to claim 1, characterized in that: An auxiliary component (6) is provided on the funnel (51). The auxiliary component (6) includes a mounting block (61). The mounting block (61) is fixedly installed on the funnel (51). A protective shell (62) is snapped onto the top of the mounting block (61). An air outlet pipe (63) is fixedly installed on the protective shell (62). A filter block (64) is fixedly installed inside the protective shell (62). A collection box (65) is snapped onto the bottom of the mounting block (61). A collection hole (66) is opened on the mounting block (61).

6. A cryogenic liquefied gas storage tank with a pressure relief mechanism according to claim 5, characterized in that: The mounting block (61), protective shell (62), air outlet pipe (63), filter block (64), collection box (65) and collection hole (66) are provided in multiple sets.

7. A cryogenic liquefied gas storage tank with a pressure relief mechanism according to claim 5, characterized in that: The threaded block (54), hollow threaded rod (55), outer shell (56), round hole (57), knob cap (58), vent hole (59), limit block (510), spring (511), blocking plate (512), slide rod (513) and rubber block (514) are disposed inside the protective shell (62), and the collection hole (66) is disposed directly above the collection box (65).

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