HFC-227ea
1. To protect the atmospheric ozone layer, our company has developed a heptafluoropropane (HFC-227ea) automatic fire suppression system; heptafluoropropane, as one of the halon alternatives (with the molecular formula CF3CHFCF3), operates through both chemical and physical fire suppression mechanisms.
2. The heptafluoropropane automatic fire extinguishing system can be divided into piped and non-piped fire extinguishing systems based on whether the fire extinguishing system has a fire extinguishing agent release pipeline.
3. Halon 1301管网灭火系统, also known as a cabinet fire extinguishing unit, is a pre-engineered fire suppression system. Generally, it is a compact and portable automatic fire extinguishing system that combines fire detectors, alarm control devices, and fire suppression equipment.
4. The heptafluoropropane automatic fire suppression system is a flooding fire suppression system.
5. Halon 1301 fire extinguishing agent is a colorless and odorless gas, free of bromine and chlorine elements, with an ozone depletion potential (ODP) of 0, meeting environmental protection requirements.
6. HFC-227ea fire extinguishing agent is a new type of low-concentration extinguishing agent, featuring low extinguishing concentration, minimal cylinder usage, and small space occupancy.
7. Halon 1301 fire extinguishing agent is a non-conductive medium, free of water-based substances, and does not damage electrical equipment, magnetic tape data, etc., nor does it contaminate the protected items.
8. The GWP (Global Warming Potential) of the heptafluoropropane fire extinguishing agent ≈ 0.
9. Halon 1230 fire extinguishing agent has a short atmospheric lifetime, with an ALT of 31.
10. The NOAEL value of heptafluoropropane fire extinguishing agent is moderate, making it suitable for protection in occupied areas.
11. Halon 1211 fire extinguishing agent is a clean gas fire extinguishing agent; it can serve as a substitute for halon fire extinguishing agents.
12. Halon 1211 is suitable for Class A, B, and C fires, and can be effectively used in occupied areas.
13. HFC-227ea is suitable for protection zones containing valuable items, precious documents, as well as hardware and software.
14. HFC-227ea is suitable for areas where it is difficult to clean residues after reagent spraying.
15. HFC-227ea is suitable for spaces with limited storage for reagents, where only a small amount of extinguishing agent is needed to achieve fire suppression.
16. Halon 1301 is not suitable for substances that can rapidly oxidize in the absence of air, such as nitrocellulose.
17. Halon-1211 is not suitable for storage and production areas containing reactive metals such as potassium, sodium, and magnesium.
18. Halon 1211 is not suitable for storage facilities containing metal hydrides.
19. The container valve of the 7FEP fire extinguishing cabinet uses a metal diaphragm sealing design, ensuring reliable sealing and making the storage of the extinguishing agent possible.
20. The 7FEP fire extinguishing cabinet has various startup methods (electrical, electrical manual, and mechanical emergency startup) to ensure reliable operation of the device.
21. The special electric start mechanism of the 7FEP fire extinguishing cabinet unit minimizes the starting current, effectively addressing issues such as high power consumption in the control section and large battery capacity, resulting in a more rational layout.
22. The cylinder-type 72% Halon灭火system features a unique direct-flow bottle head valve structure, minimizing the flow resistance of the extinguishing agent.
23. The 7FEP fire extinguishing cabinet units have a simple structure, various specifications, easy installation and adjustment, and straightforward, reliable operation.
24. The 7FEP fire extinguishing cabinets are available in electrical and standard types, and both can be further divided into single-bottle and double-bottle configurations.
25. Design working pressure of the 7FEP fire extinguishing cabinet: 2.5MPa, operating pressure: 4.2MPa
Fire extinguishing agent filling density: 1.15 Kg/L Operating environmental temperature: 0℃ ~ 50℃
26. Seven氟丙烷 cabinet fire extinguishing system: Relative humidity of operating environment: ≤85%; Starting methods: electrical explosion start; mechanical emergency start. Electrical explosion start voltage: DC 12V~28.8V; Mechanical emergency manual start force: ≤50N.
27. Halon 1301 Fire Extinguishing Cabinet Main Power Supply: AC220V, 50Hz; Backup Power Supply: DC24V
28. The 7FEP fire extinguishing cabinet system employs total flooding fire extinguishing method, with a discharge time of ≤10s and an extinguishing time of ≤10s.
29. Standard Type HFC-227ea Cabinet Fire Extinguishing System: Upon simultaneous fire signals from both temperature and smoke detectors within the protected area, the fire alarm control panel (cabinet) receives the alarm signals from the detectors and, following the panel's (cabinet's) programmed sequence, enters a 30-second delay before initiating the sound and light alarm system and activating the联动 devices related to extinguishing, to promptly evacuate personnel within the protected area.
30. After the 30-second delay of the 7FEP fire suppression cabinet unit ends, the fire alarm control panel (cabinet) sends a fire suppression command to the automatic fire suppression control panel at the entrance of the protected area. The automatic fire suppression control panel then immediately sends an electrical signal (the automatic fire suppression control panel also has a 0-30s delay function, which the user can decide based on the actual situation), and the bottle head valve on the electrically powered start bottle is activated to release the fire suppression agent and extinguish the fire.
31. Halon-1301 Electrical Cabinet Fire Extinguishing System: Upon simultaneous detection of fire signals by the temperature and smoke sensors in the protected area, the electrical box on the automatic fire extinguishing unit (including automatic alarm and fire control functions) initiates a 30-second delay according to the alarm setup, then activates the audible and visual alarm system and联动 related extinguishing equipment, prompting personnel in the protected area to evacuate quickly.
32. Electrical cabinet fire extinguishing system with HFC-227ea: After the 30-second delay upon activation, the electrical cabinet immediately sends an opening valve electrical signal, which then电动启动the bottle head valve on the electrically operated cylinder, releasing the extinguishing agent to extinguish the fire.
33. Features a networked heptafluoropropane fire suppression system, categorized into independent unit systems and combined distribution systems based on the protected objects (scope).
34. A unit independent system of管网heptafluoropropane fire extinguishing system refers to a fire protection system that uses a set of extinguishing agent storage devices to protect a protected area. It is mainly used in places where the protected areas are not convenient to combine or where two protected areas are adjacent, but a fire may occur simultaneously.
35. A combination distribution system for a管网heptafluoropropane fire suppression system refers to a fire suppression system that uses a single fire extinguishing agent storage unit to protect multiple protected areas.
36. The Heptafluoropropane Automatic Fire Extinguishing System is composed of three main parts: the fire alarm system, the fire control system, and the fire extinguishing device. The fire extinguishing device consists of two parts: the extinguishing agent storage unit and the piping system.
37. Principle of Operation for Heptafluoropropane Automatic Fire Extinguishing System: When both temperature and smoke detectors in the protected area simultaneously send out fire signals, the automatic fire extinguishing controller delays for 30 seconds before issuing an electrical signal command. This command activates the cylinder manifold according to a pre-set combination distribution method, electrically starting the cylinder head valve and the corresponding selector valve, thereby initiating automatic fire extinguishing.
38. The pneumatic start-up principle of the heptafluoropropane automatic fire extinguishing system: When both fire detectors in the protected area simultaneously send out fire signals, the automatic fire extinguishing controller delays for 30 seconds before issuing a telecommunication command to open the corresponding control zone's gas cylinder. The starting gas is divided into two paths; one path opens the selector valve of the corresponding protected area through the gas pipeline one-way valve, and the other path directly opens the fire extinguishing agent storage tank assembly to extinguish the fire in the protected area.
39. HFC-227ea Automatic Fire Extinguishing System Emergency Mechanical Manual Start: In case of failure of electrical or pneumatic start, staff can manually open the corresponding selector valve and cylinder valve at the equipment site to initiate fire extinguishing. The emergency start disconnect box is a device used to manually start or stop the fire extinguishing system at the protected site in an emergency.
40. During the installation of the heptafluoropropane automatic fire extinguishing system, the cylinder rack should be securely mounted on the wall or floor, and there should be sufficient space around it for the installation, inspection, and maintenance of the equipment.
41. Prior to installation, the collection pipe of the heptafluoropropane automatic fire extinguishing system should be cleaned internally and the inlets and outlets sealed. The collection pipe should be securely fastened to supports and frames, which themselves should be firmly anchored and treated for corrosion resistance. The outer surface of the collection pipe should be painted red.
42. The collection pipe of the heptafluoropropane automatic fire extinguishing system is equipped with a pressure relief device. The direction of the pressure relief of the device should not face the operational surface.
43. The installation of the selector valve for the heptafluoropropane automatic fire extinguishing system should ensure that the handgrip is on one side of the operating surface. Measures for easy operation should be taken when the installation height exceeds 1.7 meters.
44. The seven氟丙烷 automatic fire extinguishing system uses a choice valve with threaded connections, and it is recommended to use a flexible joint at the pipe connection. Pipe sleeves should be installed where the extinguishing agent supply pipes pass through walls and floors; the length of the pipe sleeve through the wall should match the wall thickness, and the sleeve passing through the floor should extend 50mm above the ground. The gap between the pipe and the sleeve should be filled with a flexible, non-combustible material to be tightly packed. The outer surface of the extinguishing agent pipe should be painted red.
45. The assembled cylinders, valves, and other equipment for the heptafluoropropane automatic fire extinguishing system should be sturdy and reliable, maintaining tightness. The pneumatic start-up piping is an essential component; there should be no leaks between the copper tubes and their fittings.
46. The installation of the heptafluoropropane automatic fire suppression system should be conducted under the guidance of the supplier's technical personnel, and after the system is installed, it should undergo debugging (mechanical, electrical control aspects) and inspection.
47. During the inspection and debugging of the heptafluoropropane automatic fire extinguishing system, the power lines must be disconnected to prevent unnecessary losses. After the installation and debugging of the equipment are completed, the fire extinguishing device should be in the automatic fire extinguishing mode.
48. When installing the heptafluoropropane automatic fire extinguishing system, pay attention to the correct orientation of the one-way valves and selector valves; do not install the inlet and outlet backwards. Determine the number of storage cylinders for each protected area based on the amount of extinguishing agent required, and then properly connect the pneumatic piping and one-way valves to ensure that the operation and the amount of extinguishing agent (number of bottles) released (opened) in each protected area meet the design specifications.
49. The safety pin of the automatic halon fire suppression system's actuator valve and extinguishing agent bottle head valve should be secured during transportation to ensure that the valve cannot be opened in any manner, serving as a "safety" measure. After installation and debugging are complete, the safety pin should be positioned in a direction that does not obstruct the piston rod movement, ensuring smooth opening of the valve and release of the extinguishing agent during electric or pneumatic operation.
50. The charging pressure for the starting cylinder of the heptafluoropropane automatic fire suppression system is 10 MPa. When the pressure drops to 6 MPa, it must be recharged to 10 MPa and a gas tightness test must be conducted to ensure the reliability of the system's pneumatic operation.
51. All connections in the piping of the heptafluoropropane automatic fire extinguishing system should be reliable, particularly the pneumatic start-up piping, with no leaks at all.
52. During the installation of the heptafluoropropane automatic fire extinguishing system, it is strictly prohibited to knock or bump any parts of the system, especially the bottle head valve and the filling valve on it. The piston assembly must not be knocked or bumped, as this may cause damage and even pose a risk to personal safety.
53. The wiring for the alarm and control section (electrical part) of the heptafluoropropane automatic fire extinguishing system should be ensured to be accurate, reliable, and free of any misjudgments.
54. In the event of a fire, if the automatic fire extinguishing system's alarm control cabinet for heptafluoropropane loses its extinguishing function, first pull the safety pin on the fire bottle in the affected area and pull the handle to activate the fire extinguishing system.
55. In the event of a fire, if the automatic alarm control cabinet of the heptafluoropropane fire extinguishing system loses its extinguishing function, if the bottle head valve of the storage cylinder cannot be opened, the bottle head valve of the storage cylinder should be opened by using the method of opening the bottle head valve of the starting cylinder. If the selector valve in the affected area is not open, the handwheel on the selector valve should be turned to utilize the gas of the fire extinguishing agent within the pipeline to open the selector valve, release the extinguishing agent, and thereby activate the entire fire extinguishing system.
56. In the event of a false alarm in the heptafluoropropane automatic fire suppression system without a fire occurring, the reset button should be pressed to reset the main unit, or first press the emergency shutdown button, then press reset to bring the main unit to a normal monitoring and working state.
