HFC-227ea
1. To protect the atmospheric ozone layer, our company has developed a heptafluoropropane (HFC-227ea) automatic fire extinguishing system; as one of the halon alternatives, the heptafluoropropane灭火剂 (with the molecular formula CF3CHFCF3) operates through both chemical and physical extinguishing mechanisms.
2. The heptafluoropropane automatic fire extinguishing system can be divided into管网式系统和管网式灭火系统 based on whether the extinguishing system has a fire extinguishing agent release pipeline.
3. Halon 1301管网灭火系统, also known as cabinet fire extinguishing units, is a pre-engineered fire protection system. Typically, it is a compact and portable automatic fire extinguishing system that combines fire detectors, alarm control devices, and extinguishing equipment.
4. The heptafluoropropane automatic fire extinguishing system is a full flooding system.
5. HFC-227ea 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. Halon 1211 fire extinguishing agent is a new type of low-concentration extinguishing agent, featuring low extinguishing concentration, less cylinder usage, and minimal space occupancy.
7. Halon 1301 fire extinguishing agent is a non-conductive medium and contains no water-soluble substances. It does not cause damage to electrical equipment, magnetic tape materials, etc., and does not contaminate the protected objects.
8. The GWP (Global Warming Potential) of the heptafluoropropane fire extinguishing agent ≈ 0.
9. Halon 1301 fire extinguishing agent has a short atmospheric lifetime, with an ALT of 31.
10. The NOAEL value of the 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 extinguisher; it can be used as an alternative to halogenated 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 areas 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 areas with limited storage space for reagents, where a small amount of extinguishing agent is needed to achieve fire suppression.
16. Halon-1211 is not suitable for substances that can oxidize rapidly without air, such as nitrocellulose.
17. Halon-1230a is not suitable for storage and production areas containing reactive metals such as potassium, sodium, magnesium, etc.
18. Halon-1230a is not suitable for storage areas of metal hydrides.
19. The cylinder valve of the seven-trifluoromethane cabinet fire extinguishing device features a metal diaphragm seal 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 heptafluoropropane cabinet fire extinguishing unit ensures a minimal starting current, effectively addressing issues such as high power consumption in the control section and large battery capacity, making the layout more rational.
22. The 227 fire extinguishing cabinet is uniquely structured with a direct-flow bottle head valve, resulting in minimal resistance to the flow of the extinguishing agent.
23. The 7FEP fire extinguishing cabinet is structurally simple, with various specifications, easy to install and adjust, and features simple and reliable operation.
24. The 7FEP fire extinguishing cabinets are available in electrical and standard types, and further divided into single-bottle and double-bottle configurations.
25. Design working pressure of the heptafluoropropane cabinet fire extinguishing unit: 2.5MPa, working pressure: 4.2MPa
Fire extinguishing agent filling density: 1.15 Kg/L Operating environmental temperature: 0℃ ~ 50℃
26. Halon 1230a Fire Extinguishing Cabinet Unit Operation Environment Relative Humidity: ≤85%; Start-up Methods: Electrical Detonation; Mechanical Emergency Start. Electrical Detonation Start-up Voltage: DC 12V~28.8V; Mechanical Emergency Manual Start Operation Force: ≤50N.
27. Seven氟丙烷 fire extinguishing cabinet main power supply: AC220, 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 Fire Extinguishing Cabinet: Upon simultaneous fire signals from the 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 (cabinet) programmed sequence, enters a 30-second startup delay. It then activates the sound and light alarm system and联动 equipment related to extinguishing, alerting personnel in the protected area to evacuate quickly.
30. Upon the completion of the 30-second delay after the installation of the HFC-227ea fire extinguishing cabinet unit, the fire alarm control panel (cabinet) sends a fire extinguishing command to the automatic fire extinguishing control panel at the protected area entrance. The automatic fire extinguishing control panel then immediately sends an electrical signal (the control panel also features a 0-30 second delay function, which the user can adjust according to actual conditions), triggering the bottle head valve on the electrically powered start bottle to release the extinguishing agent and initiate fire suppression.
31. Halon-1230a Cabinet Fire Extinguishing System for Electrical Equipment: Upon simultaneous fire signals from the temperature and smoke detectors within the protected area, the electrical cabinet of the automatic fire extinguishing system (including automatic alarm and extinguishing control functions) initiates a 30-second delay as per the alarm set program, then activates the sound and light alarm system and联动 equipment related to extinguishing, alerting personnel in the protected area to evacuate quickly.
32. Electro-Mechanical 72% HFC-227ea Fire Extinguishing Cabinet: After the 30-second delay for activation, the electrical cabinet immediately sends an opening valve electrical signal, which activates the bottle head valve on the electrically powered cylinder, thereby releasing the extinguishing agent for fire suppression.
33. Features a networked heptafluoropropane fire suppression system, categorized into independent unit systems and combined distribution systems based on the protected object (scope).
34. A unit independent system with a管网 heptafluoropropane fire extinguishing system refers to a fire protection system that uses a single extinguishing agent storage device to protect a protected area. It is mainly used in places where it is inconvenient to combine protection areas or where two adjacent protection areas may simultaneously experience a fire.
35. A combination distribution system for a管网 seven氟丙烷 fire extinguishing system refers to a fire extinguishing system that protects multiple protected areas with a single fire extinguishing agent storage unit.
36. The Heptafluoropropane Automatic Fire Extinguishing System consists of three main parts: the fire alarm system, the fire control system, and the extinguishing equipment. The extinguishing equipment is composed of two parts: the extinguishing agent storage device and the piping system.
37. Halon 1301 automatic fire extinguishing system operation principle: Upon simultaneous detection of fire signals from both temperature and smoke sensors within the protected area, the automatic extinguishing controller delays for 30 seconds before issuing an electrical signal command. This command activates the cylinder manifold to electrically start the cylinder valve and corresponding selector valve, initiating automatic fire extinguishing in a pre-determined combination distribution manner.
38. The pneumatic start-up principle of the heptafluoropropane automatic fire extinguishing system: When two 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 area's control cylinder. The starting gas is divided into two paths: one path opens the selection valve for the corresponding protected area through the gas pipeline one-way valve, and the other path directly opens the fire extinguishing agent storage cylinder group 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 switch box is used for manually initiating the fire extinguishing system or stopping the extinguishing system at the protected site.
40. During installation of the heptafluoropropane automatic fire suppression system, the cylinder rack should be securely fastened to the wall or floor, and there should be ample space around it for easy installation, inspection, and maintenance of the device.
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 must 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, and the pressure relief direction of the device should not face the operator's surface.
43. The installation of the selector valve for the heptafluoropropane automatic fire extinguishing system should ensure that the hand lever 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-chlorofluoropropyl automatic fire suppression system utilizes a threaded connection selector valve, and it is recommended to use a flexible joint at the pipeline connection. Ductile iron pipes should be installed at the points where fire suppression agent transmission pipes pass through walls or floors. The length of the pipe passing through the wall should be equal to the wall thickness, and the length of the pipe passing through the floor should extend 50mm above the ground. The gap between the pipe and the sleeve should be filled with flexible, non-combustible material to ensure a tight seal. The exterior surface of the fire suppression 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 their seal integrity. The pneumatic start-up pipeline is a critical component; there should be no leaks between the copper tubes and their connecting parts.
46. The installation of the heptafluoropropane automatic fire extinguishing system equipment should be carried out under the guidance of the supplier's technical personnel, and after installation, the system should be adjusted (mechanical, electrical control aspects) and inspected.
47. During the inspection and debugging of the heptafluoropropane automatic fire extinguishing system, the power cable must be disconnected to prevent unnecessary losses. After the equipment installation and debugging are completed, the fire extinguishing device should be in the automatic fire extinguishing state.
48. When installing the heptafluoropropane automatic fire extinguishing system, pay attention to the correct orientation of the one-way and selector valves, and do not reverse the inlet and outlet installation. Determine the number of storage cylinders for each protected area based on the amount of extinguishing agent required, and then properly connect the pneumatic pipeline and pneumatic one-way valves to ensure that the operation and the amount of extinguishing agent (number of cylinders) released (opened) in each protected area meet the design specifications.
49. The safety pin of the actuator valve and extinguishing agent bottle head valve for the heptafluoropropane automatic fire extinguishing system should ensure that the bottle head valve cannot be opened in any manner during transportation, serving as a "safety" feature. After installation and debugging, the position of the safety pin should be in a direction that does not obstruct the movement of the piston rod, ensuring smooth opening of the bottle head valve and release of the extinguishing agent during electric or pneumatic operation.
50. The charging pressure of the starting cylinder for the heptafluoropropane automatic fire extinguishing system is 10MPa. When the pressure drops to 6MPa, it must be recharged to 10MPa and a leak test must be conducted to ensure the reliability of the system's pneumatics.
51. All connections in the piping of the heptafluoropropane automatic fire extinguishing system should be reliable, particularly those in the pneumatic start-up piping, with no leaks.
52. When installing the heptafluoropropane automatic fire extinguishing system, it is strictly forbidden to knock or bump the system components, especially the bottle head valve and the filling valve on it. The piston assembly must not be knocked or bumped, as this can easily cause damage, and even endanger personal safety.
53. The wiring of the alarm and control section (electrical part) of the heptafluoropropane automatic fire extinguishing system should be ensured to be accurate, reliable, and free from any misjudgments.
54. In the event of a fire, if the automatic fire extinguishing system's alarm control cabinet loses its extinguishing function, first pull the safety pin on the cylinder in the burning area, pull out 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 cylinder head valve of the storage cylinder cannot be opened, use the method of opening the cylinder head valve of the starting cylinder to open the cylinder head valve of the storage cylinder. If the selector valve in the fire area is not open, turn the handwheel on the selector valve to use the extinguishing agent gas 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 extinguishing 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 put the main unit into normal monitoring mode.
