A fixed breathing gas supply system

Abstract

This application discloses a fixed breathing air supply system, including multiple main explosion-proof gas cylinders and multiple backup explosion-proof gas cylinders. Both the main and backup gas supply pipelines are equipped with pressure gauges and pressure reducing valves. The main and backup gas supply pipelines are each equipped with a first and a second control valve, respectively. A pressure safety valve is installed on the main gas supply pipeline. Each branch main pipe located in the workshop and liquid chlorine storage area is connected to a gas supply interface via branch pipes. A breathing mask is connected to any gas supply interface on the same branch main pipe. In use, the first control valve and the ball valve on the corresponding pipeline can be opened according to the actual situation, and the breathing mask at the corresponding position can be worn. When the gas in the main explosion-proof gas cylinder is used up or the main gas supply pipeline malfunctions, the second control valve can be opened to switch to the backup explosion-proof gas cylinder, ensuring continuous gas supply. Simultaneously, the installation of pressure gauges, pressure reducing valves, and pressure safety valves improves the safety of the gas supply pipeline and prevents safety accidents.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, and in particular to a fixed breathing air supply system. Background Technology

[0002] In the chemical industry, due to equipment maintenance and repair, containers may contain residual toxic gases or suffer from oxygen deficiency. Furthermore, during emergency response and routine sampling and inspection, such as in the event of chemical leaks or fires, emergency personnel need to enter the site for leak sealing, search and rescue, and firefighting. Prolonged inspections or sampling in areas with low concentrations of toxic gases can also lead to chronic poisoning. Therefore, to improve safety, chemical plants need to be equipped with breathing air supply systems to provide clean and safe air for personnel in toxic and oxygen-deficient environments.

[0003] However, existing breathing gas supply systems require gas outages for maintenance when gas cylinders or pipelines malfunction, which can easily affect the gas supply effect. At the same time, the gas supply pipelines lack safety protection measures, which can easily lead to safety accidents. Utility Model Content

[0004] The purpose of this application is to provide a fixed breathing air supply system to solve the problems of existing breathing air supply systems requiring gas supply shutdown for maintenance when the gas cylinder pipeline malfunctions, which easily affects the gas supply effect, and the lack of safety protection measures for the gas supply pipeline, which easily leads to safety accidents.

[0005] To address the aforementioned technical problems, this application provides a stationary breathing air supply system, comprising: The system includes multiple main explosion-proof gas cylinders and multiple backup explosion-proof gas cylinders. Each main explosion-proof gas cylinder is connected to a main gas supply pipeline via a main gas supply pipeline, and each backup explosion-proof gas cylinder is connected to the main gas supply pipeline via a backup gas supply pipeline. Pressure gauges and pressure reducing valves are installed on both the main and backup gas supply pipelines. A first control valve and a second control valve are respectively installed on the main and backup gas supply pipelines near the main gas supply pipeline. A pressure safety valve is installed on the main gas supply pipeline. One end of the main gas supply pipeline is connected to multiple branch mains located in the workshop and liquid chlorine storage area via branch gas supply pipelines. Each branch main is connected to a gas supply interface via a branch pipe. A breathing mask is connected to any gas supply interface on the same branch main. Ball valves are installed on the branch gas supply pipelines, the branch mains, and the branch pipes.

[0006] In a preferred embodiment, a fixed breathing air supply system is provided with a first purge valve on the main air supply pipe and the backup air supply pipe.

[0007] The solution requires detailed explanation of a fixed breathing air supply system, wherein a second purge valve is also installed on the branch pipe.

[0008] The solution requires further detailed explanation of a fixed breathing air supply system, wherein there are four main explosion-proof air supply cylinders and four backup explosion-proof air supply cylinders.

[0009] As a preferred embodiment, a fixed breathing air supply system is provided, wherein each workshop has at least one breathing mask and the liquid chlorine storage room contains at least four breathing masks.

[0010] Compared with the prior art, the fixed breathing air supply system provided by this utility model includes multiple main explosion-proof gas cylinders and multiple backup explosion-proof gas cylinders. Each main explosion-proof gas cylinder is connected to the main gas supply pipeline through a main gas supply pipeline, and each backup explosion-proof gas cylinder is connected to the main gas supply pipeline through a backup gas supply pipeline. Pressure gauges and pressure reducing valves are installed on both the main gas supply pipelines and the backup gas supply pipelines. A first control valve and a second control valve are respectively installed on the main gas supply pipelines and the backup gas supply pipelines near the main gas supply pipeline. A pressure safety valve is installed on the main gas supply pipeline. One end of the main gas supply pipeline is connected to multiple branch mains located in the workshop and liquid chlorine storage through branch gas supply pipelines. Each branch main is connected to a gas supply interface through a branch pipe. A breathing mask is connected to any gas supply interface at the same branch main. Ball valves are installed on the branch gas supply pipelines, branch mains, and branch pipes. When in use, the first control valve on the main gas supply pipeline and the ball valves on the corresponding branch gas supply pipelines, branch mains, and branch pipes can be opened according to the actual situation. Wear the breathing mask at the corresponding position. When the gas in the main explosion-proof gas cylinder is used up or the main gas supply pipeline is faulty, the second control valve can be opened to switch to the backup explosion-proof gas cylinder to ensure the continuity of gas supply. At the same time, the setting of pressure gauge, pressure reducing valve, and pressure safety valve can improve the safety of the gas supply pipeline and avoid safety accidents. Attached Figure Description

[0011] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0012] Figure 1 This is a schematic diagram of a fixed breathing air supply system provided in an embodiment of this application; In the diagram: 1. Main explosion-proof gas cylinder; 2. Backup explosion-proof gas cylinder; 3. Main gas supply pipeline; 4. Main gas supply pipeline; 5. Backup gas supply pipeline; 6. Pressure gauge; 7. Pressure reducing valve; 8. First control valve; 9. Second control valve; 10. Pressure safety valve; 11. Branch gas supply pipeline; 12. Workshop; 13. Liquid chlorine storage; 14. Branch main pipe; 15. Branch pipe; 16. Gas supply interface; 17. Breathing mask; 18. Ball valve; 19. First purge valve; 20. Second purge valve. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0014] The core of this application is to provide a fixed breathing air supply system, which solves the problems of existing breathing air supply systems requiring gas supply shutdown for maintenance when the gas cylinder pipeline malfunctions, which easily affects the gas supply effect, and the lack of safety protection measures for the gas supply pipeline, which easily leads to safety accidents.

[0015] Figure 1 This is a schematic diagram of a fixed breathing air supply system provided in an embodiment of this application. See also... Figure 1 As shown.

[0016] Example 1 A fixed breathing gas supply system includes multiple main explosion-proof gas cylinders 1 and multiple backup explosion-proof gas cylinders 2. The main explosion-proof gas cylinders 1 form one group, and the backup explosion-proof gas cylinders 2 form another group. Each main explosion-proof gas cylinder 1 is connected to a main gas supply pipeline 4 via a main gas supply pipe 3, and each backup explosion-proof gas cylinder 2 is connected to the main gas supply pipeline 4 via a backup gas supply pipe 5. Both the main gas supply pipeline 3 and the backup gas supply pipeline 5 are equipped with pressure gauges 6 and pressure reducing valves 7. The pressure gauges 6 display the gas pressure in the main gas supply pipeline 3 and the backup gas supply pipeline 5. The pressure reducing valves 7 can reduce and stabilize the high and unstable gas pressure output from the main explosion-proof gas cylinders 1 or the backup explosion-proof gas cylinders 2 to a required, lower outlet pressure, and can automatically maintain a constant outlet pressure, unaffected by changes in output pressure and flow rate.

[0017] The main gas supply pipeline 3 and the backup gas supply pipeline 5 are respectively equipped with a first control valve 8 and a second control valve 9 near the main gas supply pipeline 4. By controlling the opening and closing of the first control valve 8 and the second control valve 9, the main explosion-proof gas cylinder 1 and the backup explosion-proof gas cylinder 2 can be switched for use. The main gas supply pipeline 4 is equipped with a pressure safety valve 10. The pressure safety valve 10 automatically opens when the pressure in the main gas supply pipeline 4 rises abnormally and exceeds the set value, and releases the excess gas to a designated safe location (such as a flare system, the atmosphere, or a closed recovery system) to prevent the system from overpressure and causing an explosion or damage. The valve automatically closes when the pressure in the main gas supply pipeline 4 returns to normal. One end of the main gas supply pipe 4 is connected via a branch gas supply pipe 11 to multiple branch main pipes 14 located in workshop 12 and liquid chlorine storage 13. That is, multiple branch main pipes 14 are installed in both workshop 12 and liquid chlorine storage 13. Each branch main pipe 14 is connected to a gas supply interface 16 via a branch pipe 15. A breathing mask 17 is connected to any gas supply interface 16 on the same branch main pipe 14. Ball valves 18 are installed on the branch gas supply pipes 11, branch main pipes 14, and branch pipes 15. In use, the ball valves 18 on the corresponding branch gas supply pipes 11, branch main pipes 14, and branch pipes 15 can be opened according to the actual situation, providing oxygen to relevant personnel through the breathing masks 17.

[0018] Example 2 Based on Embodiment 1, a fixed breathing air supply system is provided with a first purge valve 19 on the main air supply pipe 3 and the backup air supply pipe 5.

[0019] Based on Embodiment 1, a fixed breathing air supply system is provided, wherein a second purge valve 20 is also provided on the branch pipe 15. Before supplying air, an inert or cleaning medium (such as nitrogen or air) can be introduced using the first purge valve 19 and the second purge valve 20 to purge the inside of the main air supply pipe 3, the backup air supply pipe 5 and the branch pipe 15.

[0020] Based on Example 1, a fixed breathing air supply system is provided, preferably, consisting of four main explosion-proof air supply cylinders 1 and four spare explosion-proof air supply cylinders 2.

[0021] Based on Example 1, a fixed breathing air supply system is provided. To improve ease of use, preferably, each workshop 12 has at least one breathing mask 17, and the liquid chlorine storage 13 has at least four breathing masks 17.

[0022] It is worth noting that the main explosion-proof gas cylinder 1, the backup explosion-proof gas cylinder 2, the main gas supply pipeline 3, the main gas supply pipeline 4, the backup gas supply pipeline 5, the branch gas supply pipeline 11, the branch main pipe 14, the branch pipe 15, the gas supply interface 16, and the breathing mask 17, as well as other breathing air pipes and accessories, must be strictly degreased and cleaned. The cleanliness of seamless stainless steel pipes and fittings must ensure that the residual carbon on the inner surface does not exceed 20 mg / m³.2 Furthermore, there are no toxic residues. Before use, the pipes should be degreased, cleaned, and purged with inert gas before being sealed.

[0023] This application provides a fixed breathing air supply system, including multiple main explosion-proof gas cylinders 1 and multiple backup explosion-proof gas cylinders 2. Each main explosion-proof gas cylinder 1 is connected to a main gas supply pipeline 4 via a main gas supply pipeline 3, and each backup explosion-proof gas cylinder 2 is connected to the main gas supply pipeline 4 via a backup gas supply pipeline 5. Pressure gauges 6 and pressure reducing valves 7 are installed on both the main gas supply pipeline 3 and the backup gas supply pipeline 5. A pressure gauge 6 and a pressure reducing valve 7 are respectively installed on the main gas supply pipeline 3 and the backup gas supply pipeline 5 near the main gas supply pipeline 4. A control valve 8 and a second control valve 9 are provided. A pressure safety valve 10 is installed on the main gas supply pipeline 4. One end of the main gas supply pipeline 4 is connected to multiple branch main pipes 14 located in the workshop 12 and the liquid chlorine storage 13 through a branch gas supply pipeline 11. Each branch main pipe 14 is connected to a gas supply interface 16 through a branch pipe 15. A breathing mask 17 is connected to any gas supply interface 16 at the same branch main pipe 14. Ball valves 18 are installed on the branch gas supply pipeline 11, the branch main pipe 14, and the branch pipe 15. In use, depending on the actual situation, the first control valve 8 on the main gas supply pipeline 3 and the ball valves 18 on the corresponding branch gas supply pipelines 11, branch main pipe 14 and branch pipe 15 can be opened, and the breathing mask 17 at the corresponding position can be worn. When the gas in the main explosion-proof gas cylinder 1 is used up or the main gas supply pipeline 3 is faulty, the second control valve 9 can be opened to switch to the backup explosion-proof gas cylinder 2 to ensure the continuity of gas supply. At the same time, the setting of pressure gauge 6, pressure reducing valve 7 and pressure safety valve 10 can improve the safety of the gas supply pipeline and avoid safety accidents.

[0024] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and incorporate common knowledge or customary techniques in the art disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of this application is indicated by the claims.

[0025] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this application described above do not constitute a limitation on the scope of protection of this application.

Claims

1. A stationary breathing air supply system, characterized in that, include: Multiple main explosion-proof gas cylinders (1) and multiple backup explosion-proof gas cylinders (2) are provided. Each main explosion-proof gas cylinder (1) is connected to the main gas supply pipeline (4) via a main gas supply pipeline (3), and each backup explosion-proof gas cylinder (2) is connected to the main gas supply pipeline (4) via a backup gas supply pipeline (5). Pressure gauges (6) and pressure reducing valves (7) are provided on both the main gas supply pipeline (3) and the backup gas supply pipeline (5). A first control valve (8) and a second control valve (9) are respectively provided on the main gas supply pipeline (3) and the backup gas supply pipeline (5) near the main gas supply pipeline (4). 9) A pressure safety valve (10) is installed on the main gas supply pipeline (4). One end of the main gas supply pipeline (4) is connected to multiple branch main pipes (14) located in the workshop (12) and liquid chlorine storage (13) through a branch gas supply pipeline (11). Each branch main pipe (14) is connected to a gas supply interface (16) through a branch pipe (15). A breathing mask (17) is connected to any gas supply interface (16) at the same branch main pipe (14). Ball valves (18) are installed on the branch gas supply pipeline (11), the branch main pipe (14) and the branch pipe (15).

2. The stationary breathing air supply system according to claim 1, characterized in that, The main gas supply pipeline (3) and the backup gas supply pipeline (5) are also equipped with a first purge valve (19).

3. The stationary breathing air supply system according to claim 1, characterized in that, A second purge valve (20) is also provided on the branch pipe (15).

4. The stationary breathing air supply system according to claim 1, characterized in that, The number of the main explosion-proof gas cylinder (1) and the number of the backup explosion-proof gas cylinder (2) are both 4.

5. The stationary breathing air supply system according to claim 1, characterized in that, Each workshop (12) has at least one of the breathing masks (17), and the liquid chlorine storage (13) has at least four of the breathing masks (17).

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