Spark Detection and Extinguishing
Spark Detection and Extinguishing
Spark Detection and Extinguishing is a vital safety solution for industrial processes prone to spark hazards. Using advanced sensors, this system detects sparks swiftly, triggering immediate responses such as water or air suppression to prevent fire or explosion risks. Its rapid action ensures the protection of personnel, equipment, and facilities in environments where sparks are generated. Compliance with industry safety standards adds assurance to its effectiveness, making Spark Detection and Extinguishing a proactive and reliable safety measure in various industrial applications.
How to work Principle of Spark Detection and Extinguishing System
In pneumatic conveyor lines, it’s essential to install spark detectors and extinguishing systems downstream of the fan, as the fan itself may generate sparks. The spark detectors identify minimal infrared rays and send signals to the spark alarm unit. Within milliseconds, the extinguishing system is activated, injecting extinguishing water through special nozzles into the extraction pipe. The flying sparks pass through this mist, reliably extinguishing them.
The minimum distance between a spark detector and the extinguishing equipment depends on the air velocity and the response time of the extinguishing system. This distance is calculated by multiplying air velocity by a safety factor. Higher air velocity requires a greater distance to ensure effective extinguishing before the spark reaches the designated spot.
In delivery lines to the filter and chip silo, both spark detection (A) and spark extinguishing systems (B) are necessary. The spark detection system (A) includes at least two detectors monitoring the pipeline cross-section, while the extinguishing system (B) consists of a quick-opening solenoid valve and extinguishing nozzles. The system remains on standby after each extinguishing process to address new sparks.
Machine shutdown (D) can be triggered by an adjustable spark threshold. The number of sparks detected and the trigger threshold are displayed at the spark alarm unit. To achieve a perfect spray pattern, a flow pressure of at least 5 bar is required. If not, a pressure booster (E) is used. Extinguishing water pipes in frost-threatened areas must have electric trace heating controlled by an external thermostat.
For maintenance purposes, insulation around valves and nozzles must be detachable. Spark detectors have built-in testing devices, and the new generation of spark alarm units (H) includes an automatic detector test facility, eliminating the need for manual testing. An extinguishing water monitoring system ensures proper extinguishing processes and displays them visually at the spark alarm unit.
In filter systems with air return, bypass smoke detectors in return air ducts immediately report smouldering fires. Two differential temperature detectors in the filter system trigger at temperatures > 90°C, either alarming or activating the extinguishing system. The spark alarm units feature a microprocessor monitoring system, saving and displaying fire events and malfunctions plainly.
The minimum distance between a spark detector and the extinguishing equipment depends on the air velocity and the response time of the extinguishing system. This distance is calculated by multiplying air velocity by a safety factor. Higher air velocity requires a greater distance to ensure effective extinguishing before the spark reaches the designated spot.
In delivery lines to the filter and chip silo, both spark detection (A) and spark extinguishing systems (B) are necessary. The spark detection system (A) includes at least two detectors monitoring the pipeline cross-section, while the extinguishing system (B) consists of a quick-opening solenoid valve and extinguishing nozzles. The system remains on standby after each extinguishing process to address new sparks.
Machine shutdown (D) can be triggered by an adjustable spark threshold. The number of sparks detected and the trigger threshold are displayed at the spark alarm unit. To achieve a perfect spray pattern, a flow pressure of at least 5 bar is required. If not, a pressure booster (E) is used. Extinguishing water pipes in frost-threatened areas must have electric trace heating controlled by an external thermostat.
For maintenance purposes, insulation around valves and nozzles must be detachable. Spark detectors have built-in testing devices, and the new generation of spark alarm units (H) includes an automatic detector test facility, eliminating the need for manual testing. An extinguishing water monitoring system ensures proper extinguishing processes and displays them visually at the spark alarm unit.
In filter systems with air return, bypass smoke detectors in return air ducts immediately report smouldering fires. Two differential temperature detectors in the filter system trigger at temperatures > 90°C, either alarming or activating the extinguishing system. The spark alarm units feature a microprocessor monitoring system, saving and displaying fire events and malfunctions plainly.
Advantages
Flameless evacuation strategies are applicable in various areas where the safety of individuals during fire incidents is paramount. Some common areas where flameless evacuation methods can be utilized include:
- Detection Mechanism
- System Activation
- Extinguishing Devices
- Swift Response Time
- Distance Calculations
- Standby Operation
- Machine Shutdown Option
- Built-in Testing Features
- Monitoring and Display
Application Examples
Frequently Asked Questions
Spark Detection and Extinguishing is a safety measure designed to detect sparks or embers in industrial processes, triggering a response to extinguish them before they can lead to fires or explosions. This typically involves the use of sensors, monitoring systems, and extinguishing devices.
This technology is commonly applied in industries with processes that generate sparks or hot particles, such as metalworking, woodworking, and certain manufacturing processes. It is used to prevent the ignition of flammable materials or dust.
A typical system includes spark detection sensors that can identify sparks or hot particles, a monitoring/control unit to analyze signals from the sensors, and extinguishing devices like water nozzles or compressed air jets to suppress sparks detected.
Spark Detection and Extinguishing systems are designed for rapid response. They can detect sparks within milliseconds and activate extinguishing devices almost instantly to prevent the ignition of surrounding flammable materials.
Yes, many Spark Detection and Extinguishing systems are designed to comply with relevant industry safety standards and regulations. It's essential to ensure that the chosen system meets the specific safety guidelines applicable to the industry and location.
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