Chemical oxygen generating gallipot adapting to low-temperature environment

Abstract

The utility model relates to a chemical oxygen generating tank adapting to a low-temperature environment, which comprises a tank body, an oxygen generating tank liner is arranged in the tank body, radiating fins are distributed on the outer wall of the oxygen generating tank liner, and the top and the bottom of the oxygen generating tank liner are respectively and correspondingly connected with an air inlet sealing plug and an air outlet sealing plug; an isolation cylinder is fixed in the oxygen generation tank liner, and air holes of different specifications are distributed in the isolation cylinder; an annular airflow channel is formed between the oxygen generation tank liner and the isolation cylinder; a plurality of partition plates are arranged in the isolation cylinder, the interior of the isolation cylinder is divided into a plurality of reaction zones, and each reaction zone is filled with a solid medicament; the top of the isolation cylinder is provided with an air inlet filtering assembly, the middle of the isolation cylinder is provided with an air outlet filtering assembly, the air outlet sealing plug and the air outlet filtering assembly are oppositely arranged, and the annular airflow channel communicates with an air outlet channel corresponding to the air outlet sealing plug. The oxygen generation medicine tank reduces the air suction temperature and meets the low-temperature using performance.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency equipment and personal protection, and more particularly to a chemical oxygen-generating medicine tank adapted to low-temperature environments. Background Art

[0002] Respirators are a widely used form of personal protective equipment. They are also essential for firefighters and emergency rescue personnel in harsh environments such as toxic, oxygen-deficient, and smoky environments. They are primarily categorized as chemical oxygen respirators and compressed oxygen respirators. Theoretically, for the same weight, chemical oxygen respirators have a significantly longer lifespan than compressed oxygen respirators.

[0003] However, chemical oxygen respirators also have certain disadvantages: the reaction releases heat, causing the temperature of the inhaled gas to continue to rise. When the temperature exceeds a certain limit (usually considered to be 60°C), the gas will burn the respiratory tract and become unusable for the wearer to breathe. Current chemical oxygen respirators have the problem of too fast oxygen generation reaction during use, and the core temperature of the reaction tank can even reach 200°C, resulting in too high an inhaled temperature. In addition, chemical oxygen respirators have the problem of insufficient initial oxygen generation in low temperature environments.

[0004] Therefore, in response to the oxygen supply needs of rescue personnel working for long periods of time, such as firefighting and hazardous chemical disposal, the large amount of heat released by the unbalanced reactions of existing oxygen-generating materials and the excessively high oxygen concentration can cause discomfort to the respirator wearer and even damage the respiratory system. How to provide a chemical oxygen respirator that can adapt to low-temperature environments and prevent the inhalation temperature from being too high is an urgent problem that technical personnel in this field need to solve. Utility Model Content

[0005] Therefore, the purpose of the present invention is to provide a chemical oxygen generating medicine tank adapted to low temperature environments, so as to meet the requirements of lower temperature use and breathing comfort.

[0006] The technical solution of the utility model is a chemical oxygen generating medicine tank adapted to low temperature environment, comprising:

[0007] The tank body has an oxygen tank liner inside, the outer wall of which is covered with heat dissipation fins, and the top and bottom of the tank body are respectively connected to the air inlet sealing plug and the air outlet sealing plug;

[0008] An isolation cylinder is fixed in the inner liner of the oxygen generating tank and is covered with air holes of different sizes; an annular air flow channel is formed between the inner liner of the oxygen generating tank and the isolation cylinder;

[0009] Partition plates, wherein a plurality of partition plates are arranged in the isolation cylinder to divide the interior of the isolation cylinder into a plurality of reaction zones, each of which is filled with a solid medicine;

[0010] Among them, the top of the isolation cylinder has an air inlet filter assembly, the middle of which is equipped with an air outlet filter assembly, the air outlet sealing plug is arranged opposite to the air outlet filter assembly, and the annular air flow channel is connected to the air outlet channel corresponding to the air outlet sealing plug.

[0011] According to the technical solution of the present invention, the air intake filter assembly includes, from top to bottom, a coarse air intake filter, quartz wool and a fine air intake filter.

[0012] According to the technical solution of the present invention, a gasket is provided between the top of the air intake coarse filter and the inner wall of the top of the oxygen generating tank inner liner.

[0013] According to the technical solution of the present invention, the air outlet filter assembly includes an air outlet coarse filter and an air outlet fine filter arranged from the outside to the inside.

[0014] According to the technical solution of the present invention, the particle size of the reagent filled in each reaction zone gradually increases from top to bottom.

[0015] According to the technical solution of the present utility model, the medicine is in any one of spherical, granular, sheet, corrugated and honeycomb shapes.

[0016] According to the technical solution of the present invention, a water-absorbing molecular sieve is filled between the inner wall of the tank body and the outer wall of the inner liner of the oxygen generating tank.

[0017] According to the technical solution of the present utility model, the partition plate is made of a lightweight alloy material with low thermal resistance.

[0018] According to the technical solution of the present invention, each of the partition plates has an air hole channel.

[0019] It can be seen from the above technical solution that compared with the prior art, the present invention has the following beneficial effects:

[0020] The utility model optimizes the reaction chamber structure of the oxygen generating tank and the medicine filling method, increases the gas flow area, reduces the breathing resistance, shortens the path of the airflow passing through the medicine layer, and realizes that the generated oxygen has a lower initial temperature.

[0021] The utility model adopts medicines of different particle sizes and shapes, which are arranged in partitions through partition plates to increase the gas flow area.

[0022] The partition plates can be arranged in different ways. Sheet-shaped partitions and layered separations create a low-resistance airway distribution. Lightweight, high-strength, and low-thermal-resistance materials are used to construct the agent support skeleton, eliminating agent collapse and agglomeration during the oxygen generation reaction. This accelerates the diffusion of internal reaction heat through the agent support skeleton to the outer wall of the oxygen generation tank, ensuring efficient and stable oxygen generation, and solving the problem of using chemical oxygen respirators in low-temperature environments.

[0023] The utility model realizes the directional reaction of the oxygen generating agent by pre-arranging multiple air inlet channels through partition plates in the isolation tube of the oxygen generating tank body; the reaction tank body is made of a high-strength, high-thermal-conductivity lightweight alloy, and the chemical oxygen generating reaction tank body is quickly cooled by filling it with solid oxygen generating agent, cooling material and installing fin heat dissipation fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a chemical oxygen generating tank adapted to low temperature environments provided by the utility model;

[0025] Figure 2 for Figure 1 AA cross-sectional view;

[0026] Figure 3 for Figure 2 BB cross-sectional view;

[0027] Figure 4 A schematic diagram of the structure of the isolation cylinder is shown.

[0028] In the figure: 1. Air inlet sealing plug, 2. Heat sink fin, 3. Gasket, 4. Air inlet coarse filter, 5. Quartz wool, 6. Air inlet fine filter, 7. Air outlet coarse filter, 8. Air outlet fine filter, 9. Isolation tube, 10. Partition plate, 11. Oxygen tank liner, 12. Air outlet sealing plug. DETAILED DESCRIPTION

[0029] Existing chemical oxygen respirators generate oxygen too quickly during use, with the core temperature of the reaction tank even reaching 200°C, resulting in excessively high inhalation temperatures and affecting breathing comfort. Chemical oxygen respirators also struggle to operate stably in low-temperature environments.

[0030] In view of this, the present invention provides a chemical oxygen respirator that adapts to low temperature environment and prevents the inhalation temperature from being too high. Figure 1-4 , comprising: a tank body, wherein the tank body has an oxygen tank liner 11 inside, the outer wall of which is covered with heat dissipation fins 2, and the top and bottom of the tank body are respectively connected to an air inlet sealing plug 1 and an air outlet sealing plug 12; an isolation tube 9, wherein the isolation tube 9 is fixed in the oxygen tank liner 11, and the isolation tube 9 is covered with air holes of different specifications; an annular air flow channel is formed between the oxygen tank liner 11 and the isolation tube 9; a partition plate 10, wherein a plurality of partition plates 10 are arranged in the isolation tube 9, which divide the interior of the isolation tube 9 into a plurality of reaction zones, and each of the reaction zones is filled with a solid agent;

[0031] Among them, the isolation tube 9 has an air inlet filter assembly on the top, and an air outlet filter assembly is installed in the middle. The air outlet sealing plug 12 is arranged opposite to the air outlet filter assembly, and the annular air flow channel is connected to the air outlet channel corresponding to the air outlet sealing plug 12.

[0032] The utility model optimizes the reaction chamber structure of the oxygen generating tank and the filling method of the reagent by partitioning the tank, arranging solid reagents, and adopting heat dissipation fins outside the tank, thereby increasing the gas flow area, reducing breathing resistance, shortening the path of airflow passing through the reagent layer, and achieving a lower initial temperature for generated oxygen.

[0033] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention.

[0034] See attached Figure 2 The air intake filter assembly includes an air intake coarse filter 4, quartz wool 5 and an air intake fine filter 6 from top to bottom to filter the air intake.

[0035] There is a gasket 3 between the top of the air intake coarse filter 4 and the top inner wall of the oxygen tank liner 11 to close the top of the annular air flow channel.

[0036] Advantageously, the air outlet filter assembly includes an air outlet coarse filter 7 and an air outlet fine filter 8 arranged from outside to inside.

[0037] In a specific embodiment of the present invention, the particle size of the reagent filled in each reaction zone gradually increases from top to bottom, thereby gradually reducing the resistance and achieving the reaction to proceed layer by layer from bottom to top.

[0038] Advantageously, the medicine is in any of the following shapes: spherical, granular, sheet, corrugated, and honeycomb.

[0039] The reagent itself is primarily composed of potassium superoxide, along with calcium hydroxide, basalt, volcanic rock, and other ingredients. Forming the reagent into a regular or irregular fixed object facilitates different ways of loading the reagent into the oxygen generator tank, optimizing the airflow path and controlling the reaction rate and heat release.

[0040] The filling methods of the medicine include but are not limited to different particle size gradients, different shapes and multiple coupled filling methods.

[0041] More advantageously, the space between the inner wall of the tank and the outer wall of the oxygen generating tank liner 11 is filled with a water-absorbing molecular sieve for absorbing heat and reducing temperature.

[0042] The partition plate 10 can be formed of an aluminum-magnesium alloy or a copper alloy to form a mesh, which can be achieved by riveting, spot welding, weaving, etc. Or, holes can be directly opened in the plate. The mesh and hole size of the mesh can be irregular or regular.

[0043] The tank body is made of high-strength, high-thermal-conductivity lightweight alloy, which can be aluminum-based composite materials, magnesium-based alloys, copper-based alloys, etc.

[0044] In the present invention, unless otherwise clearly specified or limited, terms such as "install", "connect", "connect", and "fix" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection.

[0045] The oxygen generating medicine tank of the utility model is divided into two layers. The outer layer is a complete cylinder with the outer wall covered with heat dissipation fins for increasing the heat dissipation area. The inner cylinder is the inner liner of the oxygen generating tank. The isolation cylinder is welded to the inner liner of the oxygen generating tank and is used to isolate the oxygen generating agent inside the isolation cylinder, thereby forming an unobstructed airflow channel between the isolation cylinder and the inner liner of the oxygen generating tank, and preventing the airflow channel from being blocked by the agent after the reaction.

[0046] The utility model provides a chemical oxygen-producing medicine tank adapted to low-temperature environments. Its application in the field of emergency safety can meet the needs of different emergency rescue / personal protection low-temperature scenarios such as firefighting and hazardous chemical disposal, ensuring that the active oxygen content of 1.6 kg of oxygen-producing medicine is ≥29.0% under -25°C conditions and the inhalation temperature does not exceed 38°C.

[0047] The following tests used a chemical oxygenator performance evaluation device to simulate human respiratory entropy parameters to test the oxygen production performance of the chemical oxygenator provided by the present invention and a conventional chemical oxygenator. The oxygen-generating agent mass was 1.6 kg in each case. The oxygen production performance of the different chemical oxygenators is shown in Table 1.

[0048] Table 1 Oxygen production performance of different chemical oxygen production tanks

[0049] Performance indicators Finned chemical oxygen tank Ordinary chemical oxygen tank Pharmaceutical quality 1.6kg 1.6kg Chemical oxygen production ≥300L ≥296L Carbon dioxide absorption ≥196L ≥194L Active oxygen content ≥29.0％ ≥28.1％ Suction temperature 37.8℃ 41.3℃ Adapt to temperature -25℃ -20℃

[0050] The results show that the chemical oxygenation medicine tank designed by the utility model can adapt to low temperature conditions of -25℃, while ordinary chemical oxygenation medicine tanks can only adapt to low temperature conditions of -20℃. In addition, the inhalation temperature of the chemical oxygenation medicine tank designed by the utility model is about 3.5℃ lower than that of the ordinary chemical oxygenation medicine tank, which solves the technical problems of poor low temperature adaptability and excessively high inhalation temperature.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A chemical oxygen-producing medicine tank adapted to low-temperature environments, characterized in that: include: A tank body, wherein the tank body has an oxygen tank liner (11) inside, the outer wall of which is covered with heat dissipation fins (2), and the top and bottom of the tank body are respectively connected to an air inlet sealing plug (1) and an air outlet sealing plug (12); An isolation cylinder (9) is fixed in the oxygen generating tank inner liner (11), and the isolation cylinder (9) is covered with air holes of different specifications; an annular air flow channel is formed between the oxygen generating tank inner liner (11) and the isolation cylinder (9); Partition plates (10), a plurality of partition plates (10) are arranged in the isolation cylinder (9), dividing the interior of the isolation cylinder (9) into a plurality of reaction zones, each of the reaction zones being filled with a solid medicine; The top of the isolation cylinder (9) is provided with an air inlet filter assembly, the middle of which is provided with an air outlet filter assembly, the air outlet sealing plug (12) is arranged opposite to the air outlet filter assembly, and the annular air flow channel is connected to the air outlet channel corresponding to the air outlet sealing plug (12).

2. A chemical oxygen producing medicine tank adapted to low temperature environment according to claim 1, characterized in that: The air intake filter assembly comprises, from top to bottom, an air intake coarse filter (4), quartz wool (5) and an air intake fine filter (6).

3. A chemical oxygen producing medicine tank adapted to low temperature environment according to claim 2, characterized in that: A gasket (3) is provided between the top of the air intake coarse filter (4) and the top inner wall of the oxygen generating tank liner (11).

4. The chemical oxygen-producing medicine tank adapted to low-temperature environments according to claim 1, characterized in that: The air outlet filter assembly comprises an air outlet coarse filter (7) and an air outlet fine filter (8) arranged from outside to inside.

5. The chemical oxygen-producing medicine tank adapted to low-temperature environments according to claim 1, characterized in that: The particle size of the reagent filled in each reaction zone increases gradually from top to bottom.

6. The chemical oxygen-producing medicine tank adapted to low-temperature environments according to claim 1, characterized in that: The medicine is in any of spherical, granular, sheet, corrugated and honeycomb shapes.

7. The chemical oxygen-producing medicine tank adapted to low-temperature environments according to claim 1, characterized in that: The space between the inner wall of the tank and the outer wall of the oxygen generating tank liner (11) is filled with a water-absorbing molecular sieve.

8. A chemical oxygen-producing medicine tank adapted to low-temperature environments according to any one of claims 1 to 7, characterized in that: The partition plate (10) is made of a lightweight alloy material with low thermal resistance.

9. The chemical oxygen-producing medicine tank adapted to low-temperature environments according to claim 8, characterized in that: Each of the partition plates (10) is provided with an air hole channel.

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