Fire smoke circulating poison filtering and continuous oxygen supply device

Abstract

The invention discloses a fire smoke circulating, poison filtering and continuous oxygen supply device. The device comprises a smoke collecting module, a smoke complete combustion module, an air preheating module, a decontamination and cooling module, a drying module, an oxygen generation module, a catalytic oxidation module communicated with the drying module and an oxygen supply module connected with the catalytic oxidation module which are sequentially arranged from bottom to top. According to the invention, complete combustion of fire smoke can be guaranteed, the fire smoke can be effectively cooled and filtered, and oxygen content in finally output purified air or / and oxygen is sufficient for people trapped in a fire to breathe.

Description

Technical Field

[0001] The present invention relates to the technical field of fire fighting, and in particular to a device for circulating and filtering poisonous smoke and continuously supplying oxygen in a fire. Background Art

[0002] Fire is one of the most frequent and common important disasters, and high-temperature poisonous smoke is one of the important factors forcing casualties. With the rapid development of transportation and civil engineering, the types of buildings are becoming more and more complex, and buildings such as super-high / rise buildings, extra-long tunnels, and underground projects are emerging, and the fire risk has increased sharply. At present, the existing fire fighting and rescue forces are difficult to cope with the existing complex fire situations. During the period when the trapped people are waiting for rescue, how to ensure the life safety and living conditions of the trapped people has become a key problem to be solved urgently.

[0003] At present, although a large number of scholars have carried out research on the purification of smoke in the fire scene, there are still the following problems: First, the related technologies cannot remove the poisonous and harmful gases in the fire smoke, and cannot solve the problem of ensuring the breathing of the trapped people during waiting for rescue and escape. Second, the related technologies do not consider whether the oxygen content in the purified gas meets the requirements, and it is difficult to ensure that the purified gas can supply the trapped people to breathe; Third, in the related technologies, it is necessary to use the air supplemented from the outside of the fire smoke gathering place to complete the secondary combustion with the fire smoke, and it is difficult to ensure that the oxygen in the supplemented air is sufficient to complete the combustion reaction. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide a device for circulating and filtering poisonous smoke and continuously supplying oxygen in a fire, which can ensure the complete combustion of the fire smoke, effectively cool and filter the fire smoke, and ensure that the oxygen content in the finally output purified air or / and oxygen is sufficient for the trapped people in the fire to breathe.

[0005] The device for circulating and filtering poisonous smoke and continuously supplying oxygen in a fire according to an embodiment of the present invention includes a smoke collection module, a complete combustion module for smoke, an air preheating module, a decontamination and cooling module, a drying module, an oxygen generation module, a catalytic oxidation module communicated with the drying module, and an oxygen supply module connected to the catalytic oxidation module, which are arranged in sequence from bottom to top;

[0006] Wherein, the smoke collection module is used for converging the fire smoke and making the fire smoke move vertically upward;

[0007] The complete combustion module for smoke is used for receiving the fire smoke from the smoke collection module and the preheated air or / and oxygen from the air preheating module to completely combust the fire smoke;

[0008] The air preheating module is used to receive the high-temperature flue gas after complete combustion from the flue gas complete combustion module and the purified air or / and oxygen transported from the catalytic oxidation module, exchange heat between the high-temperature flue gas and the purified air or / and oxygen, and allow the preheated air or / and oxygen to enter the flue gas complete combustion module. At the same time, it outputs the cooled flue gas to the decontamination and cooling module;

[0009] The oxygen generation module is used to generate oxygen and transport the generated oxygen to the decontamination and cooling module;

[0010] The decontamination and cooling module is used to wash and cool the flue gas cooled by the air preheating module or / and the oxygen transported from the oxygen generation module, remove the toxic and harmful substances in the flue gas or / and oxygen during the washing and cooling process, obtain the decontaminated gas, and allow the decontaminated gas to enter the drying module;

[0011] The drying module is used to dry the decontaminated gas to obtain the dried gas;

[0012] The catalytic oxidation module is used to catalytically oxidize the dried gas from the drying module, remove the residual CO in the dried gas, obtain the purified air or / and oxygen, and allow a part of the purified air or / and oxygen to enter the oxygen supply module and another part of the purified air or / and oxygen to enter the air preheating module;

[0013] The oxygen supply module is used to send a part of the purified air or / and oxygen to the external environment.

[0014] The working process of the fire smoke circulation and poison filtering continuous oxygen supply device according to the embodiment of the present invention is as follows: When a fire occurs, the smoke collection module converges the fire smoke into itself and makes the fire smoke move vertically upward, entering the smoke complete combustion module located above the smoke collection module. The combustible gas in the fire smoke undergoes secondary complete combustion with the preheated air or / and oxygen from the air preheating module in the complete combustion module to obtain high-temperature smoke. The high-temperature smoke moves vertically upward into the air preheating module located above the smoke complete combustion module, continues to move vertically upward in the air preheating module and exchanges heat with the purified air or / and oxygen from the catalytic oxidation module. After the high-temperature smoke is preliminarily cooled, it enters the decontamination and cooling module. The purified air or / and oxygen exchanges heat and warms up, that is, after preheating, it enters the smoke complete combustion module. The decontamination and cooling module cools the smoke and removes the toxic and harmful gases in the smoke to obtain the decontaminated and cooled gas after decontamination; the gas after decontamination moves vertically upward to the drying module, and the moisture is removed by the drying module to obtain the dried gas; the dried gas moves to the catalytic oxidation module, and the catalytic oxidation module removes the residual CO in the dried gas to obtain the purified air. A part of the purified air is discharged into the external environment through the oxygen supply module, and another part of the purified air enters the air preheating module; when the oxygen generation module detects that the oxygen content in the purified air after the catalytic oxidation module does not meet the breathing requirements of the trapped personnel, the oxygen generation module produces oxygen and enters the decontamination and cooling module for cooling to obtain the gas after decontamination. The gas after decontamination is dried again, and then enters the catalytic oxidation module to obtain the purified oxygen until the oxygen content of the purified air or / and oxygen after the catalytic oxidation module meets the breathing requirements of the trapped personnel, realizing continuous oxygen supply to the trapped personnel, providing respiratory protection for the trapped personnel to maintain their lives during the waiting for rescue, and at the same time, high-oxygen-content waste heat air or / and oxygen can be provided to the smoke complete combustion module to ensure the secondary complete combustion of the fire smoke.

[0015] In summary, the fire smoke circulation and poison filtering continuous oxygen supply device according to the embodiment of the present invention has the following advantages: It can ensure the secondary complete combustion of the fire smoke, quickly and effectively cool and filter the fire smoke, and can ensure that the oxygen content in the finally output purified air or / and oxygen is sufficient for the trapped personnel in the fire to breathe, solving the problem of respiratory protection for the trapped personnel during the waiting for rescue and escape. In addition, the fire smoke circulation and poison filtering continuous oxygen supply device according to the embodiment of the present invention reduces the mechanical traction of gas migration and saves costs.

[0016] In some embodiments, the smoke collection module defines a vertical channel, and the radial dimension of the vertical channel gradually decreases from bottom to top.

[0017] In some embodiments, the air preheating module includes a plurality of first channels and a second channel located outside the plurality of first channels; one ends of the plurality of first channels extend to the top of the flue gas complete combustion module and communicate with the internal combustion space of the flue gas complete combustion module, and the other ends of the plurality of first channels extend to the top of the air preheating module and are connected to the decontamination and cooling module, so that the high-temperature flue gas after complete combustion in the flue gas complete combustion module enters the decontamination and cooling module after passing through the plurality of first channels; the inlet end of the second channel is connected to the catalytic oxidation module, and the outlet end of the second channel is connected to the flue gas complete combustion module through a third channel, so that another part of the purified air or / and oxygen in the catalytic oxidation module enters the combustion space of the flue gas complete combustion module in sequence through the second channel and the third channel; wherein, the high-temperature flue gas in the first channel exchanges heat with the purified air or / and oxygen in the second channel.

[0018] In some embodiments, the decontamination and cooling module includes a box body, a water liquid, activated carbon and a plurality of U-shaped tubes. The box body contains the water liquid and the activated carbon, and the activated carbon is arranged in a honeycomb pattern in the water liquid; the plurality of U-shaped tubes are arranged in an inverted manner, one ends of the plurality of U-shaped tubes are correspondingly connected to the other ends of the plurality of first channels, the other ends of the plurality of U-shaped tubes extend downward to near the bottom of the box body, and the turning parts of the plurality of U-shaped tubes protrude out of the water liquid level.

[0019] In some embodiments, the other ends of the plurality of U-shaped tubes have flared mouths.

[0020] In some embodiments, anti-backflow structures for preventing the water liquid from flowing back are arranged on the plurality of U-shaped tubes above the water liquid level.

[0021] In some embodiments, the oxygen generation module includes an oxygen content detector, an air duct, potassium superoxide tablets, a suction assembly and a water mist nozzle;

[0022] Wherein, the oxygen content measuring instrument is arranged at the catalytic oxidation module for monitoring the oxygen content in the dried gas;

[0023] The air duct is arranged vertically. The air duct includes a sealed accommodation space located above the drying module and an air delivery channel connected to the sealed accommodation space and extending downward to near the bottom of the box body;

[0024] The potassium superoxide tablets are arranged in the sealed accommodation space;

[0025] The suction assembly is used for sucking the water liquid and the decontaminated gas above the water liquid level to form a gas-water mixture;

[0026] The water mist nozzle is connected to the suction assembly and is used to spray the gas-water mixture onto the potassium superoxide tablets, so that potassium superoxide reacts with water and carbon dioxide to generate oxygen, and the generated oxygen reaches the vicinity of the bottom of the box through the gas transmission channel.

[0027] In some embodiments, the suction assembly includes a suction pump, an air extractor, and a water extractor; the suction pump is connected to the water mist nozzle, the upper end of the air extractor, and the upper end of the water extractor; the lower end of the air extractor is located between the water liquid level and the drying module; the lower end of the water extractor extends into the water liquid in the box.

[0028] In some embodiments, the catalytic oxidation module includes a catalyst, and the catalyst is arranged in a honeycomb pattern.

[0029] In some embodiments, the fire smoke circulation gas filtration and continuous oxygen supply device as a whole is in an inverted L shape or an inverted J shape.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 is a schematic diagram of the overall structure of the fire smoke circulation gas filtration and continuous oxygen supply device according to an embodiment of the present invention.

[0033] Figure 2 is Figure 1 a schematic diagram of the structure of the U-shaped tube in

[0034] Reference numerals: Fire smoke circulation gas filtration and continuous oxygen supply device 1000; Smoke collection module 100; Flue gas complete combustion module 200; Igniter 201; First valve 202; Air preheating module 300; First channel 301; Second channel 302; Third channel 303; Second valve 304; Third valve 305; Decontamination and cooling module 400; Box 401; Water liquid 402; Activated carbon 403; U-shaped tube 404; Bell mouth 4041; Anti-backflow structure 4042; Drying module 500; Desiccant 501; Oxygen generation module 600; Oxygen content detector 601; Gas transmission pipe 602; Potassium superoxide tablets 603; Suction assembly 604; Suction pump 6041; Air extractor 6042; Water extractor 6043; Water mist nozzle 605; Catalytic oxidation module 700; Catalyst 701; First catalytic oxidation module 702; Second catalytic oxidation module 703; Oxygen supply module 800. Detailed Embodiments

[0035] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0036] Next, in combination with Figures 1 to 2 a fire smoke circulation gas filtration and continuous oxygen supply device 1000 according to an embodiment of the present invention will be described.

[0037] As Figure 1 shown, the fire smoke circulation gas filtration and continuous oxygen supply device 1000 according to an embodiment of the present invention includes a smoke collection module 100, a smoke complete combustion module 200, an air preheating module 300, a decontamination and cooling module 400, a drying module 500, an oxygen generation module 600, a catalytic oxidation module 700 communicated with the drying module 500, and an oxygen supply module 800 connected to the catalytic oxidation module 700, which are arranged in sequence from bottom to top. That is to say, the fire smoke circulation gas filtration and continuous oxygen supply device 1000 is generally in the shape of a vertical chimney. Under the action of the chimney effect, the fire smoke is vertically upward transported in the fire smoke circulation gas filtration and continuous oxygen supply device 1000 under the action of the heat buoyancy, which can reduce the mechanical traction force and save costs.

[0038] Among them, the smoke collection module 100 is used to converge the fire smoke and make the fire smoke vertically upward transported. That is to say, the smoke collection module 100 can collect the fire smoke in the nearby space to complete the convergence of the fire smoke. The fire smoke is vertically upward transported in the smoke collection module 100 under the action of the heat buoyancy, reducing the mechanical traction force and saving costs.

[0039] The complete combustion module 200 of flue gas is used to receive the fire flue gas from the smoke collection module 100 and the preheated air or / and oxygen from the air preheating module 300, so as to completely combust the fire flue gas. That is to say, since there are a large number of unburned combustible gases in the fire flue gas, by arranging the complete combustion module 200 of flue gas above the smoke collection module 100, the fire flue gas can vertically move upward under the action of thermal buoyancy into the complete combustion module 200, enabling a large number of unburned combustible gases in the fire flue gas to undergo secondary complete combustion with the preheated air / oxygen, and initially removing the combustible gases in the fire flue gas. It should be particularly noted that the preheated air / or and oxygen entering the complete combustion module 200 of flue gas comes from the finally purified air / oxygen of the fire flue gas circulation and gas filtration continuous oxygen supply device 1000 in the embodiment of the present invention, and the oxygen content requirement can be guaranteed. Compared with the prior art where secondary combustion is carried out between the air supplemented from the outside at the fire flue gas gathering place and the fire flue gas, the fire flue gas entering the complete combustion module 200 can be completely combusted, and the combustible gases in the fire flue gas can be removed better, faster and more effectively.

[0040] The air preheating module 300 is used to receive the high-temperature flue gas after complete combustion in the complete combustion module 200 of flue gas and the purified air or / and oxygen transported from the catalytic oxidation module 700, exchange heat between the high-temperature flue gas and the purified air or / and oxygen, and make the preheated air or / and oxygen enter the complete combustion module 200 of flue gas, while outputting the cooled flue gas to the decontamination and cooling module 400. That is to say, heat exchange occurs between the high-temperature flue gas and the purified air or / and oxygen in the air preheating module 300, and the heat of the high-temperature flue gas is utilized, saving external energy. The temperature of the preheated air or / and oxygen rises, enabling the fire flue gas in the complete combustion module 200 of flue gas to burn rapidly and fully better, faster and more effectively.

[0041] The oxygen generation module 600 is used to generate oxygen and transport the generated oxygen to the decontamination and cooling module 400. The oxygen generation module 600 is used to generate oxygen when the oxygen content in the purified air or / and oxygen obtained in the catalytic oxidation module 700 is insufficient to ensure the breathing of trapped people, and transport the generated oxygen into the decontamination and cooling module 400. Since the generated oxygen has a high temperature, it is cooled by the decontamination and cooling module 400. The oxygen generation module 600 can ensure that the oxygen content of the purified air or / and oxygen continuously discharged to the external environment by the fire flue gas circulation and gas filtration continuous oxygen supply device 1000 meets the requirements for human breathing, ensuring the life safety of fire trapped personnel. At the same time, it can also ensure that the fire flue gas circulation and gas filtration continuous oxygen supply device 1000 continuously provides purified air or / and oxygen with a high oxygen content to the complete combustion module 200 of flue gas, so that the combustible gases in the fire flue gas can burn completely better, faster and more effectively.

[0042] The decontamination and cooling module 400 is used to wash and cool the flue gas cooled by the air preheating module 300 or / and the oxygen transported from the oxygen generation module 600, remove the toxic and harmful substances in the flue gas or / and oxygen during the washing and cooling process, obtain the decontaminated gas, and make the decontaminated gas enter the drying module 500. Among them, the decontamination and cooling module 400 is arranged above the complete combustion module 200 of the flue gas, so that the high-temperature flue gas in the complete combustion module 200 of the flue gas can vertically move upward under the action of thermal buoyancy and enter the decontamination and cooling module 400. The decontamination and cooling module 400 is used to wash and cool the flue gas cooled by the air preheating module 300 or / and the oxygen transported from the oxygen generation module 600, and decontaminate and remove the toxic and harmful substances such as solid particles, carbides, nitrides, sulfides, cyanides, and hydrogen halides in the flue gas or / and the oxygen transported from the oxygen generation module 600 at one time, obtain the decontaminated and cooled gas. The decontamination and cooling module 400 has good decontamination and cooling effects and high efficiency.

[0043] The drying module 500 is used to dry the decontaminated gas to obtain the dried gas. That is to say, the drying module 500 will receive the decontaminated gas from the decontamination and cooling module 400, remove the moisture in the decontaminated gas, fully dry the gas after decontamination and cooling, and obtain the dried gas.

[0044] The catalytic oxidation module 700 is used to catalytically oxidize the dried gas from the drying module 500, remove the residual CO in the dried gas, obtain the purified air or / and oxygen, and make a part of the purified air or / and oxygen enter the oxygen supply module 800 to ensure the life safety of the trapped personnel, and make the other part of the purified air or / and oxygen enter the air preheating module 300.

[0045] Specifically, such as Figure 1As shown, the catalytic oxidation module 700 includes a first catalytic oxidation module 702 and a second catalytic oxidation module 703. Among them, the first catalytic oxidation module 702 is located on one side of the drying module 500 and the oxygen generation module 600. The inlet end of the first catalytic oxidation module 702 is communicated with the outlet end of the drying module 500, and the outlet end of the first catalytic oxidation module 702 is communicated with the oxygen delivery module 800. In this way, a part of the dried gas from the drying module 500 enters the first catalytic oxidation module 702 for catalytic oxidation reaction to fully remove the residual CO in a part of the dried gas, obtain a part of purified air or / and oxygen, and make this part of purified air or / and oxygen enter the oxygen delivery module 800. The second catalytic oxidation module 703 is located on one side of the decontamination and cooling module 400. The inlet end of the second catalytic oxidation module 703 is communicated with the outlet end of the drying module 500, and the outlet end of the second catalytic oxidation module 703 is located on one side of the air preheating module 300. In this way, another part of the dried gas from the drying module 500 enters the second catalytic oxidation module 703 for catalytic oxidation reaction to fully remove the residual CO in another part of the dried gas, obtain another part of purified air or / and oxygen, and make this another part of purified air or / and oxygen enter the air preheating module 300.

[0046] The oxygen delivery module 800 is used to send a part of purified air or / and oxygen to the external environment to provide respiratory protection for trapped people to maintain their lives during the waiting for rescue.

[0047] The working process of the fire smoke circulation and poison filtering continuous oxygen supply device 1000 according to the embodiment of the present invention is as follows: When a fire occurs, the smoke collection module 100 converges the fire smoke within itself and causes the fire smoke to move vertically upward, entering the complete combustion module 200 of the smoke located above the smoke collection module 100. The combustible gas in the fire smoke undergoes secondary complete combustion with the preheated air or / and oxygen from the air preheating module 300 in the complete combustion module 200 to obtain high-temperature smoke; the high-temperature smoke moves vertically upward into the air preheating module 300 located above the complete combustion module 200 of the smoke, continues to move vertically upward in the air preheating module 300 and exchanges heat with the purified air or / and oxygen from the catalytic oxidation module 700. After the high-temperature smoke is preliminarily cooled, it enters the decontamination and cooling module 400. The purified air or / and oxygen exchanges heat and warms up, that is, after preheating, it enters the complete combustion module 200 of the smoke. The decontamination and cooling module 400 cools the smoke and removes the toxic and harmful gases in the smoke to obtain the decontaminated and cooled gas after decontamination; the gas after decontamination moves vertically upward to the drying module 500, and the moisture is removed by the drying module 500 to obtain the dried gas; the dried gas moves to the catalytic oxidation module 700, and the catalytic oxidation module 700 removes the residual CO in the dried gas to obtain the purified air. Part of the purified air is discharged to the external environment through the oxygen supply module 800, and the other part of the purified air enters the air preheating module 300; when the oxygen generation module 600 detects that the oxygen content in the purified air from the catalytic oxidation module 700 does not meet the breathing requirements of the trapped personnel, the oxygen generation module 600 generates oxygen and enters the decontamination and cooling module 400 for cooling to obtain the gas after decontamination. The gas after decontamination is dried again, and then enters the catalytic oxidation module 700 to obtain the purified oxygen until the oxygen content of the purified air or / and oxygen from the catalytic oxidation module 700 meets the breathing requirements of the trapped personnel, realizing continuous oxygen supply to the trapped personnel, providing respiratory protection for the trapped personnel to maintain their lives during the waiting for rescue, and at the same time, it can provide the waste heat air or / and oxygen with high oxygen content to the complete combustion module 200 of the smoke to ensure the secondary complete combustion of the fire smoke.

[0048] In summary, the fire smoke circulation and poison filtering continuous oxygen supply device 1000 according to the embodiment of the present invention has the following advantages: It can ensure the secondary complete combustion of the fire smoke, quickly and effectively cool and filter the fire smoke, and can ensure that the oxygen content in the finally output purified air or / and oxygen is sufficient for the trapped personnel in the fire to breathe, solving the problem of respiratory protection for the trapped personnel during the waiting for rescue and escape. In addition, the fire smoke circulation and poison filtering continuous oxygen supply device 1000 according to the embodiment of the present invention reduces the mechanical traction of the gas migration and saves costs.

[0049] In some embodiments, the smoke collection module 100 defines a vertical channel, and the radial dimension of the vertical channel gradually decreases from bottom to top, enabling the smoke collection module 100 to efficiently collect fire smoke and causing the fire smoke to vertically migrate upward under the action of thermal buoyancy.

[0050] In some embodiments, the flue gas complete combustion module 200 defines a combustion space, and the lower end of the combustion space is connected to the top end of the vertical channel, enabling the fire smoke to vertically migrate into the combustion space. An igniter 201 is provided in the combustion space, and the igniter 201 ignites the mixed gas of the fire smoke and the preheated air or / and oxygen from the air preheating module 300, causing the combustible gas in the fire smoke to fully burn in the combustion space.

[0051] In some embodiments, the air preheating module 300 includes a plurality of first channels 301 and a second channel 302 located outside the plurality of first channels 301; the plurality of first channels 301 are arranged vertically, one end (i.e., the lower end) of the plurality of first channels 301 extends to the top of the flue gas complete combustion module 200 and is connected to the internal combustion space of the flue gas complete combustion module 200, and the other end (i.e., the upper end) of the plurality of first channels 301 extends to the top of the air preheating module 300 and is connected to the decontamination and cooling module 400, so that the high-temperature flue gas after complete combustion in the flue gas complete combustion module 200 vertically migrates upward under the action of thermal buoyancy through the plurality of first channels 301 and enters the decontamination and cooling module 400; the inlet end of the second channel 302 is connected to the catalytic oxidation module 700, and the outlet end of the second channel 302 is connected to the flue gas complete combustion module 200 through a third channel 303, so that another part of the purified air or / and oxygen from the catalytic oxidation module 700 sequentially enters the combustion space of the flue gas complete combustion module 200 through the second channel 302 and the third channel 303; wherein, the high-temperature flue gas in the first channel 301 exchanges heat with the purified air or / and oxygen in the second channel 302, and the temperature of the high-temperature flue gas is initially reduced and then enters the decontamination and cooling module 400, and the purified air or / and oxygen is heated up and then enters the combustion space.

[0052] In some embodiments, a first valve 202 is provided at the connection between the flue gas complete combustion module 200 and the third channel 303, a second valve 304 is provided at the connection between the outlet end of the second channel 302 and the third channel 303, and a third valve 305 is provided at the connection between the inlet end of the second channel 302 and the catalytic oxidation module 700.

[0053] In some embodiments, the decontamination and cooling module 400 includes a box body 401, a water solution 402, activated carbon 403, and a plurality of U-shaped tubes 404. The box body 401 contains the water solution 402 and the activated carbon 403, and the activated carbon 403 is arranged in a honeycomb pattern in the water solution 402; the plurality of U-shaped tubes 404 are arranged in an inverted manner, and one end of each of the plurality of U-shaped tubes 404 is communicatively connected to the other end of each of the plurality of first channels 301 one by one. The other ends of the plurality of U-shaped tubes 404 extend downward to a position near the bottom of the box body 401, and the bent portions of the plurality of U-shaped tubes 404 protrude above the liquid level of the water solution 402. When the flue gas cooled by the air preheating module 300 reaches the bottom of the box body 401 of the decontamination and cooling module 400 and then enters the water solution 402, the water solution 402 can wash the solid particles in the flue gas and further significantly reduce the temperature of the flue gas. The activated carbon 403 is arranged in a honeycomb pattern in the water solution 402, and can fully absorb toxic and harmful substances such as nitrogen compounds, sulfur compounds, cyanides, and hydrogen halides in the flue gas. The decontaminated and cooled gas obtained is discharged into the space above the liquid level of the water solution 402.

[0054] In some embodiments, the other ends of the plurality of U-shaped tubes 404 have flared mouths 4041, which facilitate the diffusion of the flue gas in the water solution 402.

[0055] In some embodiments, an anti-backflow structure 4042 for preventing the backflow of the water solution 402 is provided on the plurality of U-shaped tubes 404 above the liquid level of the water solution 402, which can prevent the water solution 402 from flowing back into the U-shaped tubes 404.

[0056] In some embodiments, an inverted conical space is defined within the anti-backflow structure 4042. The inverted conical space can be in the shape of an inverted cone, which can effectively prevent the water solution 402 from flowing back into the U-shaped tubes 404.

[0057] In some embodiments, the drying module 500 includes a desiccant 501, and the desiccant 501 is arranged in a honeycomb pattern above the bent portions of the plurality of U-shaped tubes 404, which can efficiently and fully dry the decontaminated gas, remove the moisture in the decontaminated gas, and obtain the dried gas.

[0058] In some embodiments, the oxygen generation module 600 includes an oxygen content detector 601, an air delivery pipe 602, potassium superoxide tablets 603, a suction assembly 604, and a water mist nozzle 605. Among them, the oxygen content detector 601 is arranged at the catalytic oxidation module 700 for monitoring the oxygen content in the dried gas. The air delivery pipe 602 is arranged vertically. The air delivery pipe 602 includes a sealed accommodation space above the drying module 500 and an air delivery channel connected to the sealed accommodation space and extending downward to near the bottom of the box body 401. The potassium superoxide tablets 603 are arranged in the sealed accommodation space. The suction assembly 604 is used to extract the aqueous liquid 402 and the disinfected gas above the liquid level of the aqueous liquid 402 for mixing to form a gas-water mixture. The water mist nozzle 605 is connected to the suction assembly 604 and is used to spray the gas-water mixture onto the potassium superoxide tablets 603 so that potassium superoxide reacts with water and carbon dioxide to generate oxygen, and the generated oxygen reaches near the bottom of the box body 401 through the air delivery channel. It should be noted that since the oxygen generation module 600 uses the disinfected gas, the oxygen transported through the air delivery pipe 602 still contains other gases mixed therein, that is, the oxygen input into the disinfection and cooling module 400 through the air delivery pipe 602 is still mixed with other gases and is not pure oxygen.

[0059] Specifically, when the oxygen content detector 601 detects that the oxygen content in the purified air or / and oxygen of the catalytic oxidation module 700 does not meet the breathing requirements of the trapped personnel, the suction assembly 604 will extract the aqueous liquid 402 and the disinfected gas above the liquid level of the aqueous liquid 402 for mixing to form a gas-water mixture; the gas-water mixture will be sprayed from the water mist nozzle 605 connected to the suction assembly 604 onto the potassium superoxide tablets 603 so that potassium superoxide reacts with water and carbon dioxide to generate oxygen, and the generated oxygen reaches near the bottom of the box body 401 through the air delivery pipe 602 for cooling, and then successively passes through the drying module 500, the catalytic oxidation module 700, and then enters the oxygen delivery module 800 and the air preheating module 300 respectively to complete continuous oxygen supply, providing purified air or / and oxygen with a high oxygen content, which can meet the breathing guarantee requirements of the trapped personnel in case of fire on the one hand, and enable the combustible gases in the fire smoke to burn completely on the other hand.

[0060] In some embodiments, the water mist nozzle 605 is arranged at the top of the sealed accommodation space and above the potassium superoxide tablets 603, and can accurately and widely spray the gas-water mixture onto the potassium superoxide tablets 603, increasing the efficiency of the reaction of potassium superoxide with water and carbon dioxide to generate oxygen.

[0061] In some embodiments, the suction assembly 604 includes a suction pump 6041, an air extractor 6042, and a water extractor 6043; the suction pump 6041 is connected to the water mist nozzle 605, the upper ends of the air extractor 6042 and the water extractor 6043; the lower end of the air extractor 6042 is located between the liquid level of the liquid 402 and the drying module 500; the lower end of the water extractor 6043 extends into the liquid 402 in the box body 401. That is to say, the water extractor 6043 can suck the liquid 402 under the action of the suction pump 6041; the air extractor 6042 can extract the disinfected gas between the liquid level of the liquid 402 and the drying module 500 under the action of the suction pump 6041; the upper ends of the air extractor 6042 and the water extractor 6043 are connected, so the liquid 402 and the disinfected gas will be mixed together to form a gas-liquid mixture after being sucked, and sprayed out through the water mist nozzle 605 connected to the suction assembly 604.

[0062] In some embodiments, the water extractor 6043 is sleeved in the air extractor 6042, and the lower port of the air extractor 6042 is in a flared shape. Among them, the water extractor 6043 is sleeved in the air extractor 6042, and the structure is reasonably arranged, which is convenient for the extracted liquid 402 and the disinfected gas to be mixed into a gas-liquid mixture; the lower end of the flared air extraction port can enable the air extractor 6042 to efficiently extract gas.

[0063] In some embodiments, the catalytic oxidation module 700 includes a catalyst 701, and the catalyst 701 is arranged in a honeycomb pattern, which can fully contact with the dried gas and efficiently remove the residual CO in the gas.

[0064] In some embodiments, a blower (not shown in the figure) is provided in the oxygen supply module 800. The blower can efficiently send out the purified air or / and oxygen, and provide respiratory protection for the trapped people to maintain their lives during the waiting for rescue.

[0065] In some embodiments, the fire smoke circulation gas filtration and continuous oxygen supply device 1000 is generally in an inverted L shape or an inverted J shape, and is generally similar to a vertical chimney. Under the action of the chimney effect, the fire smoke is vertically transported in the fire smoke circulation gas filtration and continuous oxygen supply device 1000 under the action of the thermal buoyancy, which can reduce the mechanical traction force and save costs.

[0066] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0067] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fire smoke circulation, filtration and continuous oxygen supply device, characterized in that: It includes a smoke collection module, a smoke complete combustion module, an air preheating module, a decontamination and cooling module, a drying module, an oxygen generation module, a catalytic oxidation module connected to the drying module, and an oxygen supply module connected to the catalytic oxidation module, which are arranged in sequence from bottom to top; The smoke collection module is used to collect fire smoke and move the fire smoke vertically upward; The smoke complete combustion module is used to receive the fire smoke from the smoke collection module and the preheated air or / and oxygen from the air preheating module, so as to completely burn the fire smoke; The air preheating module is used to receive the high-temperature flue gas after complete combustion in the flue gas complete combustion module and the purified air or / and oxygen delivered from the catalytic oxidation module, so that the high-temperature flue gas and the purified air or / and oxygen can exchange heat, and the preheated air or / and oxygen can enter the flue gas complete combustion module, and at the same time output the cooled flue gas to the decontamination and cooling module; The oxygen generation module is used to generate oxygen and transport the generated oxygen to the decontamination and cooling module; The decontamination and cooling module is used to wash and cool the flue gas cooled by the air preheating module and / or the oxygen delivered by the oxygen generation module, and remove toxic and harmful substances in the flue gas and / or the oxygen during the water washing and cooling process to obtain decontaminated gas, and allow the decontaminated gas to enter the drying module; The drying module is used to dry the decontaminated gas to obtain dried gas; The catalytic oxidation module is used to catalytically oxidize the dried gas from the drying module to remove residual CO in the dried gas, obtain purified air and / or oxygen, and allow a portion of the purified air and / or oxygen to enter the oxygen delivery module, and allow another portion of the purified air and / or oxygen to enter the air preheating module; The oxygen delivery module is used to deliver a portion of the purified air and / or oxygen to the external environment.

2. The fire smoke circulation, gas filtering and continuous oxygen supply device according to claim 1 is characterized in that: The smoke collection module defines a vertical channel, and the radial dimension of the vertical channel gradually decreases from bottom to top.

3. The fire smoke circulation, gas filtering and continuous oxygen supply device according to claim 2 is characterized in that: The air preheating module includes a plurality of first channels and a second channel located outside the plurality of first channels; one end of the plurality of first channels extends to the top of the flue gas complete combustion module and is communicated with the internal combustion space of the flue gas complete combustion module, and the other end of the plurality of first channels extends to the top of the air preheating module and is connected with the decontamination and cooling module, so that the high-temperature flue gas after complete combustion in the flue gas complete combustion module passes through the plurality of first channels and enters the decontamination and cooling module; the inlet end of the second channel is connected to the catalytic oxidation module, and the outlet end of the second channel is connected to the flue gas complete combustion module through a third channel, so that another part of the purified air or / and oxygen of the catalytic oxidation module enters the combustion space of the flue gas complete combustion module through the second channel and the third channel in sequence; wherein, the high-temperature flue gas in the first channel and the purified air or / and oxygen in the second channel exchange heat with each other.

4. The fire smoke circulation, gas filtering and continuous oxygen supply device according to claim 3 is characterized in that: The disinfection and cooling module includes a box body, water, activated carbon and a plurality of U-shaped tubes. The water and the activated carbon are contained in the box body, and the activated carbon is arranged in a honeycomb pattern in the water. The plurality of U-shaped tubes are arranged in an inverted manner, and one end of the plurality of U-shaped tubes is connected to the other end of the plurality of first channels in a one-to-one correspondence, and the other ends of the plurality of U-shaped tubes extend downward to near the bottom of the box body, and the turning parts of the plurality of U-shaped tubes extend out of the liquid surface of the water.

5. The fire smoke circulation, gas filtering and continuous oxygen supply device according to claim 4 is characterized in that: The other ends of the plurality of U-shaped tubes are provided with bell mouths.

6. The fire smoke circulation, gas filtering and continuous oxygen supply device according to claim 4 is characterized in that: A backflow prevention structure for preventing the backflow of the water is arranged on the plurality of U-shaped tubes at a position above the liquid level of the water.

7. The fire smoke circulation, gas filtering and continuous oxygen supply device according to claim 4 is characterized in that: The oxygen generating module comprises an oxygen content detector, an air delivery pipe, a potassium superoxide plate, a suction assembly and a water mist nozzle; Wherein, the oxygen content measuring instrument is arranged at the catalytic oxidation module to monitor the oxygen content in the gas after drying; The gas delivery pipe is arranged vertically, and comprises a closed accommodation space located above the drying module and a gas delivery channel connected to the closed accommodation space and extending downward to the vicinity of the bottom of the box body; The potassium superoxide plate is arranged in the closed containing space; The suction assembly is used to extract the water liquid and the decontaminated gas above the water liquid surface to mix them to form a gas-water mixture; The water mist nozzle is connected to the suction assembly and is used to spray the gas-water mixture onto the potassium superoxide plate so that potassium superoxide reacts with water and carbon dioxide to generate oxygen, and the generated oxygen reaches the vicinity of the bottom of the box through the gas transmission channel.

8. The fire smoke circulation, gas filtering and continuous oxygen supply device according to claim 7 is characterized in that: The suction assembly includes a suction pump, an air extractor and a water extractor; the suction pump is connected to the water mist nozzle, the upper end of the air extractor and the upper end of the water extractor; the lower end of the air extractor is located between the water liquid surface and the drying module; the lower end of the water extractor extends into the water liquid in the box.

9. The fire smoke circulation, gas filtering and continuous oxygen supply device according to any one of claims 1 to 8, characterized in that: The catalytic oxidation module includes catalysts, and the catalysts are arranged in a honeycomb pattern.

10. The fire smoke circulation, gas filtering and continuous oxygen supply device according to any one of claims 1 to 8, characterized in that: The fire smoke circulation, gas filtering and continuous oxygen supply device is in an inverted L shape or an inverted J shape as a whole.

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