Nitrogen fire-fighting device for oxygen cabin

Abstract

A nitrogen fire-fighting device for an oxygen cabin comprises the oxygen cabin. Pipelines for introducing air, exhausting air and introducing nitrogen are respectively connected to the interior of the oxygen cabin; the device further comprises a safety valve, a control valve, an oxygen cabin, an oxygen concentration sensor, a control device and a nitrogen nozzle. The safety valve is connected with the oxygen cabin and is used for preventing the pressure of the medium in the oxygen cabin from exceeding a specified value by discharging the medium to the outside of the system when the pressure of the medium in the oxygen cabin rises and exceeds the specified value; the nitrogen nozzle is mounted in the oxygen cabin; the number of the control valves is three, and the three control valves are installed on an air feeding pipeline, an air discharging pipeline and a nitrogen feeding pipeline respectively and used for controlling nitrogen and air feeding and air discharging in the oxygen cabin. The oxygen concentration sensor is mounted in the oxygen cabin, is connected with the control device and is used for monitoring the oxygen concentration in the oxygen cabin and transmitting a signal to the control device; the control device is electrically connected with the control valve; according to the utility model, the nitrogen is used for extinguishing fire, so that the oxygen cabin is prevented from being corroded by fire-fighting water, and the fire-extinguishing purpose can be quickly achieved.

Description

Technical Field

[0001] This utility model belongs to the field of fire-fighting devices for oxygen chambers, specifically relating to a nitrogen fire-fighting device for oxygen chambers. Background Art

[0002] Currently, most medical hyperbaric oxygen chambers on the market use nitrogen or air to drive fire-fighting water. This method is problematic in low-temperature environments (especially extremely low temperatures at high altitudes). When the chamber is closed for rest, the fire-fighting water in the tank quickly freezes, causing the system to lose its functionality. Furthermore, if the oxygen chamber uses a water sprinkler fire suppression system, once activated, regardless of the size of the fire, the internal facilities will be damaged and rendered unusable due to corrosion from the fire-fighting water after the fire is extinguished, requiring major repairs. This is a common problem for all hyperbaric oxygen chambers using water sprinkler fire suppression systems. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a sliding door device that occupies a small area, can withstand pressure and achieve sealing when the door is closed, and leaves no residual pressure in the passage between the two doors after the cabin environment is depressurized, thus solving the problem of doors that cannot be opened.

[0004] This utility model is achieved through the following technical solution:

[0005] A nitrogen fire suppression system for an oxygen chamber includes an oxygen chamber; the oxygen chamber is internally connected to pipes for air supply, air exhaust, and nitrogen supply; it also includes a safety valve, control valves, an oxygen chamber, an oxygen concentration sensor, a control device, and nitrogen nozzles; the safety valve is connected to the oxygen chamber and is used to prevent the pressure of the medium inside the oxygen chamber from exceeding a specified value by discharging the medium outside the system; the nitrogen nozzles are installed inside the oxygen chamber and connected to the nitrogen supply pipes; three control valves are installed on the air supply, air exhaust, and nitrogen supply pipes respectively, and are used to control the valves for adding nitrogen and air and for exhausting air from the oxygen chamber; the oxygen concentration sensor is installed inside the oxygen chamber and connected to the control device, and is used to monitor the oxygen concentration inside the oxygen chamber and transmit the signal to the control device; the control device is electrically connected to the control valves and is used to control the opening and closing of the control valves; the oxygen chamber is equipped with a camera device; the nitrogen nozzles are evenly distributed at the bottom of the oxygen chamber; the nitrogen sprayed from the nitrogen nozzles is food-grade high-pressure nitrogen.

[0006] The beneficial effects of this utility model are:

[0007] This invention uses nitrogen to extinguish fires, avoiding corrosion of the oxygen chamber by fire-fighting water, and can also quickly achieve the purpose of extinguishing fires. Attached Figure Description

[0008] The present invention will now be described in further detail with reference to the accompanying drawings.

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] In the diagram: 1—Safety valve; 2—Control valve; 3—Oxygen chamber; 4—Camera device; 5—Oxygen concentration sensor; 6—Control device; 7—Nitrogen nozzle. DETAILED DESCRIPTION

[0011] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0012] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0013] In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be noted that the terms "comprising," "including," or any other variations are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0014] like Figure 1 The nitrogen fire suppression system for an oxygen chamber shown includes: a safety valve 1, a control valve 2, an oxygen chamber 3, a camera device 4, an oxygen concentration sensor 4, a control device 6, and a nitrogen nozzle 7.

[0015] The oxygen chamber 3 is internally connected to pipes for air supply, air exhaust, and nitrogen supply.

[0016] The safety valve 1 is connected to the oxygen chamber 3 and is used to prevent the pressure of the medium in the oxygen chamber 3 from exceeding the specified value by discharging the medium to the outside of the system when the pressure of the medium in the oxygen chamber 3 rises above the specified value; it controls the pressure to not exceed the specified value and plays an important protective role for personal safety and the operation of the oxygen chamber 3.

[0017] The nitrogen nozzle 7 is installed inside the oxygen chamber 3 and connected to the nitrogen pipeline; since nitrogen is less dense than air, the nitrogen nozzle 7 is evenly distributed at the bottom of the oxygen chamber 3; to ensure the physical and mental health of the personnel inside the chamber, the nitrogen sprayed from the nitrogen nozzle 7 is food-grade high-pressure nitrogen.

[0018] The number of control valves 2 is three, which are respectively installed on the air supply, air exhaust and nitrogen supply pipes. They are used to control the addition of nitrogen and air and the exhaust of air in the oxygen chamber 3. In the event of a fire, the oxygen concentration in the oxygen chamber 3 is rapidly reduced to and maintained between 12% and 13%, so as to quickly extinguish the open flames in the chamber and achieve the purpose of fire fighting.

[0019] The oxygen concentration sensor 5 is installed inside the oxygen chamber 3 and connected to the control device 6. It is used to monitor the oxygen concentration inside the oxygen chamber 3 and transmit the signal to the control device 6.

[0020] The control device 6 is electrically connected to the control valve 2 and is used to control the opening and closing of the control valve 2.

[0021] The camera device 4 is installed inside the oxygen chamber 3 to monitor the condition of the people inside the oxygen chamber 3.

[0022] The working principle of this utility model:

[0023] When a fire occurs inside oxygen chamber 3, personnel inside (or outside) oxygen chamber 3 quickly open the control valve inside (or outside) the chamber. High-pressure nitrogen from the high-pressure nitrogen cylinder is rapidly introduced into oxygen chamber 3 through pipelines and nitrogen nozzles 7 installed inside the chamber, causing the oxygen concentration inside oxygen chamber 3 to rapidly decrease to between 12% and 13%, quickly extinguishing the open flames inside the chamber and achieving the purpose of fire fighting. During this period, control device 6 adjusts control valve 2 to stabilize the oxygen concentration inside oxygen chamber 3 to between 12% and 13%.

[0024] The scope of protection of this utility model is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this utility model shall fall within the scope of protection of this utility model.

Claims

1. A nitrogen fire suppression system for an oxygen chamber, comprising an oxygen chamber (3); wherein the oxygen chamber (3) is internally connected to pipes for air supply, air exhaust, and nitrogen supply; characterized in that: It also includes a safety valve (1), a control valve (2), an oxygen chamber (3), an oxygen concentration sensor (5), a control device (6), and a nitrogen nozzle (7); the safety valve (1) is connected to the oxygen chamber (3) and is used to prevent the medium pressure in the oxygen chamber (3) from exceeding the specified value by discharging the medium to the outside of the system when the medium pressure in the oxygen chamber (3) rises above the specified value; the nitrogen nozzle (7) is installed in the oxygen chamber (3) and is connected to the nitrogen pipeline; the number of control valves (2) is three, which are respectively installed on the air supply, air exhaust, and nitrogen supply pipelines, and are used to control the addition of nitrogen and air and the exhaust of the control valves (2) in the oxygen chamber (3); the oxygen concentration sensor (5) is installed in the oxygen chamber (3) and is connected to the control device (6) to monitor the oxygen concentration in the oxygen chamber (3) and transmit the signal to the control device (6); the control device (6) is electrically connected to the control valve (2) and is used to control the opening and closing of the control valve (2).

2. The nitrogen fire suppression device for an oxygen chamber according to claim 1, characterized in that... The oxygen chamber (3) is equipped with a camera device (4).

3. A nitrogen fire suppression device for an oxygen chamber according to claim 1, characterized in that... The nitrogen nozzles (7) are evenly distributed at the bottom of the oxygen chamber (3).

4. A nitrogen fire suppression system for an oxygen chamber according to claim 1 or 3, characterized in that... The nitrogen gas ejected from the nitrogen nozzle (7) is food-grade high-pressure nitrogen.

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