CN218951013U - Combined oxygen candle heat insulation and temperature reduction device - Google Patents
Combined oxygen candle heat insulation and temperature reduction device Download PDFInfo
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- CN218951013U CN218951013U CN202220412549.1U CN202220412549U CN218951013U CN 218951013 U CN218951013 U CN 218951013U CN 202220412549 U CN202220412549 U CN 202220412549U CN 218951013 U CN218951013 U CN 218951013U
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Abstract
The utility model relates to a combined oxygen candle heat insulation and cooling device, and belongs to the technical field of solid chemical oxygen generators. Comprises a shell and an upper cover; a shell cavity is formed between the inner wall and the outer wall of the shell, high-temperature-resistant heat-insulating coating is coated on the inner wall surface of the shell, which is close to the outer wall of the shell, is provided with a heat-insulating sheet, the outer wall of the shell is provided with an air inlet and an air outlet, the shell cavity is filled with gas with a heat conductivity coefficient smaller than that of air, an oxygen candle placement hole is formed in the shell, and the size of the oxygen candle placement hole is matched with that of the oxygen candle; the upper cover is arranged at the top of the shell and is provided with an oxygen outlet; the diameter of the oxygen outlet is larger than that of the oxygen candle air outlet. The device can greatly reduce the temperature which can contact the outer surface when the oxygen candle burns on the premise of not changing the existing oxygen candle structure or occupying the internal space of the oxygen candle; meanwhile, the combined oxygen candle heat insulation and cooling device can be reused by replacing the internal oxygen candle, so that the production cost is saved.
Description
Technical Field
The utility model relates to a combined oxygen candle heat insulation and cooling device, and belongs to the technical field of solid chemical oxygen generators.
Background
The oxygen candle is an emergency oxygen supply device developed by utilizing the principle that oxygen-enriched chlorate or perchlorate generates thermal decomposition reaction to release oxygen. Under the condition of producing the same oxygen, the volume of the oxygen candle is only one third of the volume of the oxygen of the high-pressure gas cylinder. The oxygen candle has the advantages of safety and reliability under normal pressure, no environmental limitation, maintenance-free, high oxygen yield, long service life, small volume, light weight, simple operation, convenient transportation and the like, and is widely used as an emergency oxygen supply device in the fields of aerospace, high-altitude parachuting, ship emergency escape, petroleum, chemical industry and other toxic and harmful places, fire disaster self-rescue, mine rescue, patient self-rescue, battlefield rescue and the like.
The oxygen candle consists of a shell, a starting device, oxygen-generating explosive column, a filtering material, a heat insulation material and the like. The oxygen-generating explosive column is a core part of the oxygen candle and consists of chlorate or perchlorate, metal fuel, catalyst, chlorine inhibitor, adhesive, stabilizer and the like. Oxygen candle burning and oxygen release belong to exothermic reaction, the reaction temperature is maintained at about 200-500 ℃ for a long time, so that a metal shell wrapping oxygen-containing materials also keeps high temperature, larger heat load can be brought to the use environment, and meanwhile, the high temperature is easy to cause injury to personnel, so that the high-capacity oxygen candle is extremely necessary to be subjected to cooling and heat insulation treatment.
A heat insulation material layer is arranged between the outer part of the oxygen generating candle body and the inner wall of the oxygen candle body in Chinese patent CN212403460U, the inner wall of the oxygen candle body is provided with a jacket structure, and one or more than two compositions of phase change material HDPE hot melt adhesive powder, LDPE hot melt adhesive powder and PES copolyester hot melt adhesive powder are filled in the jacket. Chinese patent application CN109336057a uses a staggered arrangement of silica aerogel felt and glass fiber cloth layers to provide thermal insulation protection. Chinese patent CN206566371U is filled with aluminum sulfate octadecahydrate in the heat insulating layer, and hydrogel is filled in the cooling layer. Therefore, the prior oxygen candle heat insulation research mainly focuses on two aspects, namely, designing an oxygen candle shell into a jacket structure, and adding heat absorbing materials such as water-containing compounds such as aluminum sulfate octadecanoate and the like and variable materials such as hot melt adhesive powder into the jacket. On the other hand, the oxygen-generating grain is wrapped by heat-insulating sheets such as silicon dioxide aerogel felt, glass fiber cloth layers, heat-insulating cotton and the like. Designing the outer shell of the oxygen candle as a jacket structure can increase the volume and weight of a single oxygen candle, and simultaneously designing the jacket structure for each oxygen candle can increase the production cost. The heat-insulating sheet can occupy the internal space of the oxygen candle, so that the filling space of the impurity gas purifying materials such as chlorine, carbon monoxide and the like is greatly reduced, and the improvement of the gas quality is not facilitated.
Disclosure of Invention
Therefore, the utility model aims to provide a combined oxygen candle heat insulation and cooling device.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a combined oxygen candle heat insulation and cooling device comprises a shell and an upper cover; the shell comprises a shell body, wherein a shell body cavity is formed between the inner wall and the outer wall of the shell body, high-temperature-resistant heat insulation coating is coated on the inner wall surface of the shell body, the inner wall surface of the shell body cavity and the inner wall surface of the upper cover, which are close to the outer wall of the shell body, a heat insulation sheet is arranged on the inner wall surface of the shell body cavity, an air inlet and an air outlet are formed in the outer wall of the shell body, gas with a heat conductivity coefficient smaller than that of air is filled in the shell body cavity, oxygen candle placement holes are formed in the shell body, and the sizes of the oxygen candle placement holes are matched with the oxygen candle holes; the upper cover is arranged at the top of the shell and is provided with an oxygen outlet; the diameter of the oxygen outlet is larger than that of the oxygen candle air outlet.
Further, the coating thickness of the high-temperature-resistant heat-insulating coating is 2-5 mm.
Furthermore, the shell and the upper cover are made of stainless steel.
Further, the shell is connected with the upper cover through a lock catch.
Further, the heat insulation sheet is a silica aerogel felt, an aluminum silicate fiber felt, a glass fiber felt or a rock wool fiber felt.
Further, the distance between the two wall surfaces of the shell cavity is 10-40 mm.
Further, the diameters of the air inlet and the air outlet are 5-20 mm respectively.
Further, an upper cover cavity is arranged in the upper cover, and potassium hexatitanate whisker with the particle size of 5-10 mu m is filled in the upper cover cavity.
Further, the distance between the two wall surfaces in the cavity of the upper cover is 10-40 mm.
Advantageous effects
In the combined oxygen candle heat insulation and cooling device provided by the utility model, a plurality of heat insulation and cooling modes are integrated, and the temperature which can be contacted with the outer surface during combustion of the oxygen candle can be greatly reduced on the premise of not changing the existing oxygen candle structure or occupying the internal space of the oxygen candle; meanwhile, the combined oxygen candle heat insulation and cooling device can be reused by replacing the internal oxygen candle, so that the production cost is saved.
In the combined oxygen candle heat insulation and cooling device provided by the utility model, the heat insulation sheet is selected from silicon dioxide aerogel felt, aluminum silicate fiber felt, glass fiber felt or rock wool fiber felt and the like, is coated with high-temperature resistant heat insulation coating, and is filled with argon gas and carbon dioxide gas with low heat conductivity coefficients, so that heat conduction is effectively inhibited, and the temperature of the outer wall of the oxygen candle, which can be contacted, is reduced. The heat insulation sheet is arranged in the cavity of the shell, so that the original assembly mode and the internal filling of the oxygen candle are not influenced, the oxygen candle can be repeatedly used, and the internal space of the oxygen candle is not influenced.
In the combined oxygen candle heat insulation and cooling device provided by the utility model, the high-temperature resistant heat insulation coating is coated on the inner wall and the outer wall of the upper cover, and the potassium hexatitanate whisker is encapsulated in the cavity of the upper cover, so that the radiation and conduction of heat are effectively inhibited, and the temperature of the contact surface of the oxygen candle is further reduced.
Drawings
Fig. 1 is a schematic structural diagram of a heat insulation and cooling device according to an embodiment of the utility model.
Wherein, 1-casing, 2-casing cavity, 3-air inlet, 4-gas outlet, 5-upper cover, 6-oxygen outlet, 7-hasp, 8-upper cover cavity, 9-oxygen candle setting hole.
Detailed Description
The present utility model will be described in further detail with reference to specific examples.
As shown in FIG. 1, a combined oxygen candle heat insulation and cooling device comprises a shell 1 and an upper cover 5; the heat-resistant heat-insulating coating is coated on the inner wall surface of the shell cavity 2, the inner wall surface of the upper cover 5 and the outer wall of the shell 1, a heat-insulating sheet is arranged on the inner wall surface of the shell cavity 2, which is close to the outer wall of the shell 1, an air inlet 3 and an air outlet 4 are formed on the outer wall of the shell 1, gas with a heat conductivity coefficient smaller than that of air is filled in the shell cavity 2, an oxygen candle placement hole 9 is formed in the shell 1, and the size of the oxygen candle placement hole 9 is matched with that of an oxygen candle; the upper cover 5 is arranged at the top of the shell 1, and an oxygen outlet 6 is arranged on the upper cover 5; the diameter of the oxygen outlet 6 is larger than that of the oxygen candle air outlet.
The coating thickness of the high-temperature-resistant heat-insulating coating is 2-5 mm. In the following examples, the high temperature resistant heat insulating coating adopts a high temperature resistant heat insulating coating of a type of a Cheng Weihua ZS-1.
The shell 1 and the upper cover 5 are made of stainless steel.
The housing 1 is previously connected with the upper cover 5 by a latch 7.
The heat insulation sheet is a silicon dioxide aerogel felt, an aluminum silicate fiber felt, a glass fiber felt or a rock wool fiber felt.
The distance between the two wall surfaces of the shell cavity 2 is 10-40 mm.
The gas filled in the shell cavity 2 is argon and/or carbon dioxide.
The diameters of the air inlet 3 and the air outlet 4 are respectively 5-20 mm.
An upper cover cavity 8 is arranged in the upper cover 5, and potassium hexatitanate whisker with the grain diameter of 5-10 mu m is filled in the upper cover cavity 8.
The distance between the two wall surfaces in the upper cover cavity 8 is 10-40 mm.
Example 1
In the embodiment, the size of the shell 1 is 170 multiplied by 320mm, the distance between two wall surfaces of the cavity 2 of the shell is 20mm, and the size of the oxygen candle placement hole 9 is 150 multiplied by 300mm; the size of the upper cover is 170 multiplied by 20mm, and the distance between the two wall surfaces of the cavity 8 of the upper cover is 20mm; the diameters of the air inlet 3 and the air outlet 4 are 10mm; the oxygen outlet 6 has a diameter of 55mm. Carbon dioxide is filled in the shell cavity 2; the heat-insulating sheet is aluminum silicate fiber felt; the cavity 8 of the upper cover is filled with potassium hexatitanate whisker with the particle size of 10 mu m. The size of the oxygen candle is 150 multiplied by 300mm, and the diameter of the oxygen candle air outlet is 50mm.
Example 2
In this embodiment, the housing cavity 2 is filled with argon gas; the procedure is as in example 1.
Example 3
In the embodiment, the shell cavity 2 is filled with a mixed gas of carbon dioxide and argon with the volume ratio of 1:1; the procedure is as in example 1.
Temperature measuring points are directly arranged on the outer surface of the oxygen candle, and the temperature of the outer wall of the oxygen candle during the whole-process combustion is detected by adopting JK-XU multiplex temperature tester, wherein the highest temperature of the outer wall of the oxygen candle is 368 ℃. Temperature measuring points are respectively arranged on the outer surfaces of the devices in the embodiments 1-3, and the temperature of the outer wall of the device is detected in the whole process by adopting JK-XU multiplex temperature tester, wherein the highest temperature of the outer wall of the shell in the embodiments 1-3 is 48 ℃, 67 ℃ and 54 ℃.
In view of the foregoing, it will be appreciated that the utility model includes but is not limited to the foregoing embodiments, any equivalent or partial modification made within the spirit and principles of the utility model.
Claims (9)
1. A combined oxygen candle heat insulation and cooling device is characterized in that: comprises a shell (1) and an upper cover (5); the heat-resistant heat-insulating coating is coated on the inner wall surface of the shell (1), the outer wall surface of the shell (1), the inner wall surface of the shell cavity (2) and the inner wall surface of the upper cover (5), heat-insulating sheets are arranged on the inner wall surface of the shell cavity (2) close to the outer wall of the shell (1), an air inlet (3) and an air outlet (4) are formed in the outer wall of the shell (1), gas with a heat conductivity smaller than that of air is filled in the shell cavity (2), oxygen candle placement holes (9) are formed in the shell (1), and the sizes of the oxygen candle placement holes (9) are matched with those of an oxygen candle; the upper cover (5) is arranged at the top of the shell (1), and an oxygen outlet (6) is arranged on the upper cover (5); the diameter of the oxygen outlet (6) is larger than that of the oxygen candle air outlet.
2. The combined oxygen candle heat insulation and cooling device as set forth in claim 1, wherein: the coating thickness of the high-temperature-resistant heat-insulating coating is 2-5 mm.
3. The combined oxygen candle heat insulation and cooling device as set forth in claim 1, wherein: the shell (1) and the upper cover (5) are made of stainless steel.
4. The combined oxygen candle heat insulation and cooling device as set forth in claim 1, wherein: the shell (1) is connected with the upper cover (5) through a lock catch (7).
5. The combined oxygen candle heat insulation and cooling device as set forth in claim 1, wherein: the heat insulation sheet is a silicon dioxide aerogel felt, an aluminum silicate fiber felt, a glass fiber felt or a rock wool fiber felt.
6. The combined oxygen candle heat insulation and cooling device as set forth in claim 1, wherein: the distance between the two wall surfaces of the shell cavity (2) is 10-40 mm.
7. The combined oxygen candle heat insulation and cooling device as set forth in claim 1, wherein: the diameters of the air inlet (3) and the air outlet (4) are respectively 5-20 mm.
8. The combined oxygen candle heat insulation and cooling device as set forth in claim 1, wherein: an upper cover cavity (8) is arranged in the upper cover (5), and potassium hexatitanate whiskers with the particle size of 5-10 mu m are filled in the upper cover cavity (8).
9. The combined oxygen candle heat insulation and cooling device as set forth in claim 8, wherein: the distance between the two wall surfaces in the upper cover cavity (8) is 10-40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220412549.1U CN218951013U (en) | 2022-02-28 | 2022-02-28 | Combined oxygen candle heat insulation and temperature reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220412549.1U CN218951013U (en) | 2022-02-28 | 2022-02-28 | Combined oxygen candle heat insulation and temperature reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218951013U true CN218951013U (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220412549.1U Active CN218951013U (en) | 2022-02-28 | 2022-02-28 | Combined oxygen candle heat insulation and temperature reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218951013U (en) |
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2022
- 2022-02-28 CN CN202220412549.1U patent/CN218951013U/en active Active
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