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; fire extinguishing is conducted through nitrogen, the oxygen cabin is prevented from being corroded by fire fighting water, and the fire extinguishing purpose can be rapidly achieved.

Description

Technical Field

[0001] The invention belongs to the field of fire fighting devices for oxygen chambers, and in particular relates to a nitrogen fire fighting device for oxygen chambers. Background Art

[0002] Most of the medical air pressurized oxygen chambers on the market currently use nitrogen or air to drive fire water. This method is used for treatment in low-temperature environments (especially extremely low temperatures in plateaus). When the chamber is stopped for rest, the fire water in the fire water tank will quickly freeze into ice, causing the system to lose its working ability. At the same time, the oxygen chamber uses a water sprinkler fire-fighting system. Once it is triggered, no matter how big the fire is, after the fire is extinguished, the internal facilities of the oxygen chamber will be corroded by the fire water and basically damaged and scrapped, and must be overhauled to restore. This is a problem that all hyperbaric oxygen chambers that use water sprinkler fire-fighting systems currently have. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to provide a sliding door device which occupies a small space, can withstand pressure and achieve sealing when the door is closed, and has no residual pressure in the passage between the two doors after the cabin environment is depressurized, thereby solving the problem of the door being unable to be opened.

[0004] The present invention is achieved through the following technical solutions: A nitrogen fire fighting device for an oxygen chamber comprises an oxygen chamber; the oxygen chamber is internally connected with pipelines for passing air, exhausting air and passing nitrogen respectively; the device also comprises a safety valve, a control valve, an oxygen chamber, an oxygen concentration sensor, a control device and a nitrogen nozzle; the safety valve is connected with the oxygen chamber, and is used to prevent the medium pressure in the oxygen chamber from exceeding the specified value by discharging the medium to the outside of the system when the medium pressure in the oxygen chamber rises to exceed the specified value; the nitrogen nozzle is installed in the oxygen chamber and connected with the pipeline for passing nitrogen; the number of the control valves is three, which are respectively installed on the pipelines for passing air, exhausting air and passing nitrogen, and are used to control the valves for adding nitrogen and air and exhausting gas in the oxygen chamber; the oxygen concentration sensor is installed in the oxygen chamber and connected with the control device, and is used to monitor the oxygen concentration in the oxygen chamber and transmit the signal to the control device; the control device is electrically connected with the control valve, and is used to control the opening and closing of the control valve; the oxygen chamber is provided with a camera; the nitrogen nozzles are evenly arranged at the bottom of the oxygen chamber; the nitrogen sprayed from the nitrogen nozzles is food grade high pressure nitrogen.

[0005] Beneficial effects of the present invention: The present invention uses nitrogen to extinguish fire, thus preventing the oxygen chamber from being corroded by fire water and also achieving the purpose of fire extinguishing quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The present invention is further described in detail below with reference to the accompanying drawings.

[0007] Figure 1It is a structural schematic diagram of the present invention.

[0008] As shown in the figure: 1—safety valve; 2—control valve; 3—oxygen chamber; 4—camera device; 5—oxygen concentration sensor; 6—control device; 7—nitrogen nozzle. DETAILED DESCRIPTION

[0009] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0010] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0011] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. It should be noted that the terms "include", "comprise" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0012] like Figure 1 The nitrogen fire fighting device for an oxygen chamber shown in the figure comprises: 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.

[0013] The oxygen chamber 3 is internally connected with pipelines for passing air, exhausting air and passing nitrogen.

[0014] 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; controlling the pressure not to exceed the specified value plays an important protective role in personal safety and the operation of the oxygen chamber 3.

[0015] The nitrogen nozzle 7 is installed in the oxygen cabin 3 and connected to the nitrogen pipeline; since the density of nitrogen is lighter than that of air, the nitrogen nozzle 7 is evenly arranged at the bottom of the oxygen cabin 3; in order to ensure the physical and mental health of the people in the cabin, the nitrogen sprayed from the nitrogen nozzle 7 is food-grade high-pressure nitrogen.

[0016] The control valves 2 are three in number and are respectively installed on the air-inlet, air-exhaust and nitrogen-exhaust pipes, and are used to control the valves for adding nitrogen and air into the oxygen chamber 3 and exhausting the air. When a fire occurs, the oxygen concentration in the oxygen chamber 3 is rapidly reduced to and maintained between 12% and 13%, and the open fire in the chamber is quickly extinguished, thereby achieving the purpose of fire fighting.

[0017] The oxygen concentration sensor 5 is installed in the oxygen chamber 3 and 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 .

[0018] 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 .

[0019] The camera device 4 is installed in the oxygen chamber 3 and is used to monitor the status of people in the oxygen chamber 3 .

[0020] Working principle of the present invention: When a fire occurs in the oxygen chamber 3, personnel inside (or outside) the oxygen chamber 3 quickly open the control valve inside (or outside) the chamber, and the high-pressure nitrogen in the high-pressure nitrogen bottle is quickly added into the oxygen chamber 3 through the pipeline and the nitrogen nozzle 7 installed in the chamber, so that the oxygen concentration in the oxygen chamber 3 is quickly reduced to between 12% and 13%, and the open fire in the chamber is quickly extinguished to achieve the purpose of fire fighting. During this period, the control device 6 adjusts the control valve 2 to stabilize the oxygen concentration in the oxygen chamber 3 to between 12% and 13%.

[0021] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A nitrogen fire-fighting device for an oxygen chamber, comprising an oxygen chamber (3); the interior of the oxygen chamber (3) is respectively connected with pipes for passing air, exhausting air and passing nitrogen; and the characteristics are: The system also comprises 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 pressure of the medium in the oxygen chamber (3) from exceeding a specified value by discharging the medium to the outside of the system when the pressure of the medium in the oxygen chamber (3) exceeds a specified value; the nitrogen nozzle (7) is installed in the oxygen chamber (3) and is connected to a nitrogen pipe; the control valves (2) are three and are installed on the air pipes, air exhaust pipes and nitrogen pipes respectively, and are used to control the control valves (2) for adding nitrogen and air into the oxygen chamber (3) and exhausting the air; the oxygen concentration sensor (5) is installed in the oxygen chamber (3) and is connected to the control device (6) and is used to monitor the oxygen concentration in the oxygen chamber (3) and transmit a 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. A nitrogen fire fighting device for an oxygen chamber according to claim 1, characterized in that The oxygen chamber (3) is provided with a camera device (4).

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

4. A nitrogen fire fighting device for an oxygen chamber according to claim 1 or 3, characterized in that The nitrogen sprayed from the nitrogen nozzle (7) is food grade high pressure nitrogen.

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