Ventilation system of low-temperature storage tank

Abstract

The utility model relates to a low-temperature storage tank ventilation system which comprises a low-temperature storage tank, a first fan, a second fan and an air guide assembly, the low-temperature storage tank comprises an outer shell, an inner shell and an interlayer area, the outer shell and the inner shell are arranged in a spaced mode, the interlayer area is formed between the outer shell and the inner shell, and a storage cavity is defined by the inner shell and communicated with the interlayer area. The low-temperature storage tank is provided with an air inlet channel communicated with the storage cavity and an air outlet channel communicated with the storage cavity, the first fan used for supplying air into the storage cavity is arranged at the air inlet channel, and the second fan used for exhausting air out of the low-temperature storage tank is arranged at the air outlet channel. The air guide assembly is arranged in the interlayer area, air is guided through the air guide assembly working at the interlayer of the narrow and small space, air channel obstruction in the narrow and small space is reduced, the first draught fan and the second draught fan are matched with each other in a one-feeding and one-discharging mode, the air exhaust efficiency is improved, and air circulation in the storage tank is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of storage equipment, in particular to a low-temperature storage tank ventilation system. Background Art

[0002] During the construction process inside the bimetallic cryogenic storage tank, problems such as welding smoke and construction dust will be generated, causing the floating matter in the air inside the tank to exceed the standard, affecting the workers' working air environment and thus endangering the workers' health. At present, the existing ventilation means usually opens a vent on the top of the tank and installs an exhaust fan, but because the bimetallic cryogenic storage tank has a sandwich structure inside, it will hinder the natural circulation of air, making the exhaust efficiency low. Utility Model Content

[0003] The main purpose of the utility model is to propose a low-temperature storage tank ventilation system, aiming to solve the problem that the low-temperature storage tank in the existing low-temperature storage tank ventilation system has a sandwich structure inside, which hinders the natural circulation of air and makes the exhaust efficiency low.

[0004] To achieve the above-mentioned purpose, the utility model proposes a low-temperature storage tank ventilation system, including a low-temperature storage tank, a first fan, a second fan and an air guide assembly, the low-temperature storage tank includes an outer shell and an inner shell that are spaced apart and a sandwich area formed therebetween, the inner shell defines a storage cavity and the storage cavity is connected to the sandwich area, the low-temperature storage tank is provided with an air inlet channel connected to the storage cavity and an air outlet channel connected to the storage cavity, the first fan for supplying air into the storage cavity is provided at the air inlet channel, the second fan for exhausting air to the outside of the low-temperature storage tank is provided at the air outlet channel, and the air guide assembly is provided in the sandwich area.

[0005] According to some embodiments of the present invention, the wind guide assembly includes a plurality of induced fans for guiding the wind in the interlayer area to the air outlet channel.

[0006] According to some embodiments of the utility model, the wind guide assembly includes a plurality of induced wind machine groups arranged in sequence and spaced apart in the vertical direction, and the induced wind machine group includes a plurality of the induced fans arranged at the same height.

[0007] According to some embodiments of the present invention, in each of the induced fan groups, a plurality of the induced fans at the same height are arranged at intervals along the circumference of the interlayer area.

[0008] According to some embodiments of the utility model, in each of the induced wind fan groups, the air outlet directions of the multiple induced wind fans at the same height have an angle greater than 0° and less than 90° with the vertical direction and are directed toward the outer shell.

[0009] According to some embodiments of the present utility model, the air inlet channel includes an external air inlet provided on the outer shell and an internal air inlet provided on the inner shell, and the first fan is provided at the external air inlet.

[0010] According to some embodiments of the utility model, the air outlet channel includes an air collecting area located at the top of the low-temperature storage tank and an air outlet provided at the top of the outer shell and connected to the air collecting area, the second fan is provided at the air outlet, and the air collecting area is respectively connected to the storage cavity and the interlayer area.

[0011] According to some embodiments of the present invention, a plurality of auxiliary air outlets communicating with the interlayer area are provided on the periphery of the top of the outer shell.

[0012] According to some embodiments of the utility model, the inner shell is provided with a plurality of air passages for respectively connecting the lower portion of the storage cavity and the upper portion of the storage cavity with the interlayer area.

[0013] According to some embodiments of the present invention, an air quality detector is provided in the interlayer area and / or the storage cavity.

[0014] The utility model has at least the following beneficial effects:

[0015] In the utility model, when the air guide component working in the interlayer of a smaller space is working, it can guide the air to reduce the obstruction of the air duct in the smaller space, and then cooperate with the one-delivery-one-exhaust mode of the first fan and the second fan, combined with the outer shell ambient temperature being higher than the inner shell ambient temperature, thereby forming a chimney effect, improving the exhaust efficiency, and promoting the air circulation in the low-temperature storage tank.

[0016] The utility model further has the following beneficial effects: by arranging an air quality detector in the interlayer area and / or the storage cavity, and the air quality detector is interlocked with the air guide assembly, the first fan and the second fan, when the detected air quality is lower than a preset value, the first fan, the second fan and the air guide assembly are started to circulate air, thereby realizing the real-time air quality detection function, and being able to respond to the air environment in a timely manner to perform ventilation circulation. In this way, there is no need to keep the air guide assembly, the first fan and the second fan working all the time, which saves environment and increases the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a low-temperature storage tank ventilation system provided by an embodiment of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the air guide assembly;

[0020] Figure 3 for Figure 1 A schematic diagram of the top view of the air guide assembly;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the air quality detector in.

[0022] Description of reference numerals:

[0023] 100-low temperature storage tank ventilation system; 1-outer shell; 11-auxiliary air outlet; 2-inner shell; 21-wind passage; 3-sandwich area; 4-wind guide assembly; 41-induced fan; 5-first fan; 6-second fan; 7-air inlet channel; 71-outer air inlet; 72-inner air inlet; 8-air outlet channel; 81-wind collecting area; 82-air outlet; 9-air quality detector. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0027] The utility model provides a low-temperature storage tank ventilation system. Figure 1-Figure 4 The utility model provides a specific embodiment of a low-temperature storage tank ventilation system.

[0028] like Figure 1 The embodiment of the utility model provides a low-temperature storage tank ventilation system 100, including a low-temperature storage tank, a first fan 5, a second fan 6 and an air guide component 4, the low-temperature storage tank includes an outer shell 1 and an inner shell 2 arranged at intervals and a sandwich area 3 formed therebetween, the inner shell 2 defines a storage cavity and the storage cavity is connected to the sandwich area 3, the low-temperature storage tank is provided with an air inlet channel 7 connected to the storage cavity and an air outlet channel 8 connected to the storage cavity, the air inlet channel 7 is provided with a first fan 5 for supplying air into the storage cavity, the air outlet channel 8 is provided with a second fan 6 for exhausting air to the outside of the low-temperature storage tank, and the air guide component 4 is provided in the sandwich area 3.

[0029] In the utility model, when the air guide component 4 working in the interlayer of a smaller space is working, it can guide the air to reduce the obstruction of the air duct in the smaller space, and then cooperate with the one-delivery-one-exhaust mode of the first fan 5 and the second fan 6, combined with the fact that the ambient temperature of the outer shell 1 is higher than the ambient temperature of the inner shell 2, a chimney effect is formed, which improves the exhaust efficiency and promotes the air circulation in the low-temperature storage tank.

[0030] Specifically, the air guide assembly 4 includes a plurality of induced fans 41 for guiding the wind in the interlayer area 3 to the air outlet channel 8. The induced fans 41 are also called jet fans or relay fans. They transfer air by induction, and can stir and clear local air dead corners to improve local air. Because the space in the interlayer area 3 is relatively small, the induced fans 41 can clear air duct obstructions, cooperate with the first fan 5 and the second fan 6, and combine with the fact that the ambient temperature of the outer shell 1 is higher than the ambient temperature of the inner shell 2 to form a chimney effect, thereby accelerating the circulation of air and thereby improving the exhaust efficiency.

[0031] Furthermore, considering that the height of the cryogenic storage tank is generally high, in one embodiment, the air guide assembly 4 includes a plurality of induced fans 41 groups arranged in sequence along the vertical direction, and the induced fans 41 groups include a plurality of induced fans 41 arranged at the same height. In this way, the air in the interlayer area 3 can be continuously and progressively induced through the plurality of induced fans 41 groups arranged vertically, thereby improving the exhaust efficiency and being suitable for cryogenic storage tanks with a larger height.

[0032] Furthermore, in one embodiment, in each group of the induced fans 41, a plurality of the induced fans 41 at the same height are arranged at intervals along the circumference of the interlayer area 33, for example Figure 3 As shown in , there are four induced fans 41, and each of the induced fans 41 is arranged at 90° intervals. In this way, the effective range of each of the induced fans 41 can be expanded as much as possible, so that the air flows more evenly, thereby improving the efficiency of air circulation.

[0033] It is worth mentioning that in some embodiments, in each of the induced fans 41, the air outlet directions of the multiple induced fans 41 at the same height have an angle greater than 0° and less than 90° with the vertical direction and are directed toward the outer shell 1. In this way, when each of the induced fans 41 is working, the air flow in the interlayer can be swirled upward. For details, please refer to Figure 1 and Figure 2 The arrow in the figure indicates the direction of air flow. The swirling airflow accelerates the flow rate of the airflow, thereby improving the exhaust efficiency of the entire system. In addition, because the swirling airflow is in the interlayer, it cooperates with the multiple auxiliary air outlets 11 arranged on the periphery of the outer shell 1 to further accelerate the exhaust of air.

[0034] Specifically, the air inlet channel 7 includes an external air inlet 71 provided on the outer shell 1 and an internal air inlet 72 provided on the inner shell 2, and the first fan 5 is provided at the external air inlet 71 to enable the first fan 5 to directly discharge air into the two spaces of the storage cavity and the interlayer area 3.

[0035] Specifically, the air outlet channel 8 includes a wind collecting area 81 located at the top of the low-temperature storage tank and an air outlet 82 located at the top of the outer shell 1 and connected to the wind collecting area 81. The second fan 6 is arranged at the air outlet 82. The wind collecting area 81 is respectively connected to the storage cavity and the interlayer area 3. The wind collecting area 81 can gather air from the storage cavity and the interlayer area 3, and then discharge it through the air outlet 82.

[0036] Specifically, a plurality of auxiliary air outlets 11 connected to the interlayer area 3 are provided on the periphery of the top of the outer shell 1, so that the gas in the interlayer area 3 can be directly discharged through the auxiliary air outlets 11, which also improves the exhaust efficiency.

[0037] Specifically, the inner shell 2 is provided with a plurality of air passages 21 for connecting the lower portion of the storage cavity and the upper portion of the storage cavity with the interlayer area 3 respectively. In this way, the wind in the interlayer area 3 can also enter the storage cavity through the air passage 21 located at the lower portion of the storage cavity, and then be discharged through the air passage 21 located at the upper portion of the storage cavity, thereby further improving the exhaust efficiency in the storage cavity.

[0038] Specifically, in some embodiments, an air quality detector 9 is provided in the interlayer area 3 and / or the storage cavity, and the air quality detector 9 is interlocked with the air guide assembly 4, the first fan 5 and the second fan 6. When the detected air quality is lower than a preset value, the first fan 5, the second fan 6 and the air guide assembly 4 are started for air circulation, thereby realizing the real-time air quality detection function and being able to respond to the air environment in a timely manner to perform ventilation circulation. In this way, the first fan 5, the second fan 6 and the air guide assembly 4 do not need to work continuously, which saves energy and environment and increases the service life of the equipment. When the air quality detector 9 is provided in both the interlayer area 3 and the storage cavity, the detection range can be expanded.

[0039] It is understandable that when construction workers are working normally inside the storage tank, the air quality around them is more important. Therefore, in some embodiments, the height of each air quality detector 9 relative to the bottom of the low-temperature storage tank is h, 1.5m<h<2m. In this way, the height of the air quality detector 9 is closer to the height at which the construction workers breathe air, which can achieve more targeted air quality detection and more effectively protect the health of the construction workers.

[0040] Specifically, considering that welding smoke and other fumes may be generated during construction work, there is a possibility that smoke may accumulate and clog the air outlet 82 . Therefore, in some embodiments, the air quality detector 9 is also provided on the outer shell 11 near the air outlet 82 .

[0041] It should be noted that the low-temperature storage tank ventilation system 100 is mainly used in the construction stage. After the construction of the low-temperature storage tank is completed, the connection between the interlayer area 3 and the inner shell 2 will be sealed to make the inner shell 2 airtight and have a storage function. The first fan 5, the second fan 6 and the air guide assembly 4 will also be removed, and then the insulation material will be injected into the interlayer area to form an insulation layer to complete the construction of the low-temperature storage tank.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low temperature storage tank ventilation system, characterized in that: It includes a low-temperature storage tank, a first fan, a second fan and an air guide assembly. The low-temperature storage tank includes an outer shell and an inner shell that are spaced apart and a sandwich area formed therebetween. The inner shell defines a storage cavity and the storage cavity is connected to the sandwich area. The low-temperature storage tank is provided with an air inlet channel connected to the storage cavity and an air outlet channel connected to the storage cavity. The first fan for supplying air into the storage cavity is provided at the air inlet channel, and the second fan for exhausting air to the outside of the low-temperature storage tank is provided at the air outlet channel. The air guide assembly is provided in the sandwich area.

2. The cryogenic storage tank ventilation system according to claim 1, characterized in that: The wind guide assembly includes a plurality of induced fans for guiding the wind in the interlayer area to the air outlet channel.

3. The cryogenic storage tank ventilation system according to claim 2, characterized in that: The wind guide assembly includes a plurality of induced wind machine groups arranged in sequence and at intervals along the vertical direction, and the induced wind machine group includes a plurality of induced fans arranged at the same height.

4. The cryogenic storage tank ventilation system according to claim 3, characterized in that: In each of the induced fan groups, a plurality of the induced fans at the same height are arranged at intervals along the circumference of the interlayer area.

5. The low temperature storage tank ventilation system according to claim 3, characterized in that: In each of the induced wind fan groups, the air outlet directions of the multiple induced wind fans at the same height have an angle greater than 0° and less than 90° with the vertical direction and are directed toward the outer shell.

6. The cryogenic storage tank ventilation system according to claim 1, characterized in that: The air inlet passage comprises an outer air inlet provided on the outer shell and an inner air inlet provided on the inner shell, and the first fan is provided at the outer air inlet.

7. The cryogenic storage tank ventilation system according to claim 1, characterized in that: The air outlet channel includes an air collecting area located at the top of the low-temperature storage tank and an air outlet provided at the top of the outer shell and connected to the air collecting area. The second fan is provided at the air outlet. The air collecting area is connected to the storage cavity and the interlayer area respectively.

8. The cryogenic storage tank ventilation system according to claim 1, characterized in that: A plurality of auxiliary air outlets communicating with the interlayer area are arranged on the periphery of the top of the outer shell.

9. The cryogenic storage tank ventilation system according to claim 1, characterized in that: The inner shell is provided with a plurality of air passages for respectively connecting the lower part of the storage cavity and the upper part of the storage cavity with the interlayer area.

10. The cryogenic storage tank ventilation system according to claim 1, characterized in that: An air quality detector is provided in the interlayer area and / or the storage cavity.

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