Jieco Intelligent Spark Detector Extinguishing System
Jieco intelligent spark detector is a high-speed, ultra-sensitive optical radiant energy sensor, which greatly improves the capture speed of light signals on the basis of eliminating interference noise. Designed to detect small sparks, or burning particles and smoldering materials in pneumatic conveying lines. Suitable for applications where the operating temperature is below 60 degrees. Output 24VDC switching signal or dry contact switching signal. Most applications require two spark detectors installed horizontally facing each other at 180 degrees. A single spark detection point cannot monitor the entire cross section of the pipeline; Therefore, two spark detection and extinguishing systems are required to work in principle
Product Detail
Jieco Intelligent Spark Detector Extinguishing System
Technical application scheme of spark detection and extinguishing system
Jieco intelligent spark detector is a high-speed, ultra-sensitive optical radiant energy sensor, which greatly improves the capture speed of light signals on the basis of eliminating interference noise. Designed to detect small sparks, or burning particles and smoldering materials in pneumatic conveying lines. Suitable for applications where the operating temperature is below 60 degrees. Output 24VDC switching signal or dry contact switching signal. Most applications require two spark detectors installed horizontally facing each other at 180 degrees. A single spark detection point cannot monitor the entire cross section of the pipeline; Therefore, two spark detection and extinguishing systems are required to work in principle
The spark detector is mounted 180 degrees face to face to facilitate testing from one spark detector through the lens of another spark detector. When there are sparks in the upstream pipeline of the dust collector passing through the spark detector, the spark detector detects the spark within 60us by infrared scanning, and feed-back the signal to the controller, which will then open the high-speed solenoid valve installed on the high-pressure extinguisher nozzle within 20us. The high-pressure water flow impacted by the solenoid valve shoots out arc high-pressure water mist within about 200ms, and extinguishes the sparks in the pipeline.
Spark detector reaction time 60us+ controller processing time 20us+ spray device opening time 200ms+ water ejection time 68us=290ms, the reaction time of the whole system is 290ms. It can effectively extinguish the spark in the shortest time, with the least spark and the least harm, and achieve the purpose of protecting the dust removal equipment and the safety of life and property of the whole plant.
Spark detection extinguishing system flow chart, system page
The Jieco Mars probe is installed in the main pipe, and the high-pressure extinguisher nozzle is installed 8.5 meters above the probe and 1.8 meters above the dust collection box. The above distance is calculated based on the wind speed of the main air duct of 25 m/s. If the wind speed is greater than 25 m/s, it is necessary to lengthen the safe extinguishing distance between the probe and the nozzle.
Power supply specifications ensure that it is a clean power supply, the voltage is AC220V5%8A, the power supply can not be cut off 24 hours a day, (the input power supply is an independent power supply, must not be shared with the production equipment and dust collection power box power supply) The cable is a shielded control line, the wiring requirements can not be parallel with other power wires, the cable needs to be equipped with the corresponding protection sleeve.
If the pipe inhales sparks, the control system will draw the corresponding relay to output a passive dry contact signal, which can be connected to the control system of the dust control electrical cabinet, and shut down the central dust suction fan respectively to ensure the safe operation of the central dust suction equipment.
System specification drawing
For the first time in China, the detection sensing device is directly installed to the detection surface, without the light guide column, and will not miss any safety risks
Using 304 stainless steel pilot solenoid valve, and 304 stainless steel high pressure nozzle and obtained invention patents.
Intelligent control of the electric box, record all on-off time and Mars occurrence time and extinguishment time.
Extra low water pressure alarm signal device to ensure the safety of high-pressure water supply in real time.
Anti-interference hub box, can filter external power interference and noise interference.
Installation Instruction
Jieco intelligent spark detector installation distance requirements
The distance between the spark detector and the nearest branch pipe should be >1.3m
Distance from spray extinguisher to spark detector >8.5m
The distance from the spray extinguishing device to the downstream pipe elbow is more than 1.8m, that is, the distance of the pipe diameter *2
Layout and installation of spark detector
The spark detector should not be installed in the pipe elbow, but should be installed in the straight pipe part
Spark detector arrangement: Arrange the two spark detectors face to face on the same cross section of the pipeline, remember not to allow the arrangement at the bottom of the pipeline
Use the special tool included with the goods to make a hole in the pipe to install, without going inside the pipe
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FAQ
How does the spark detector work with the extinguishing system?
How does the spark detector work with the extinguishing system?
After the detector is triggered, the extinguishing device (e.g. water jet, nitrogen injection) needs to be activated within 0.5 seconds, cutting off the feed and power supply at the same time
How to maintain a spark detector?
How to maintain a spark detector?
Cleaning: The lens needs to be cleaned daily in a high-dust environment, and it is cleaned weekly under general conditions. Similarly, equipment in mixed-age activity areas also requires regular maintenance. Calibration: Every 3 months, the calibration sensitivity of the light source is tested with a standard, and the explosion-proof performance is re-checked every year. The calibration logic in the consolidated accounting statements can be used as a reference. It is forbidden to modify parameters without authorization: adjusting the alarm value is a major hidden danger, and the fault needs to be troubleshoot according to the specifications. This is similar to the technical specifications required for optical detector electrode optimization
What are the precautions for installing a spark detector?
What are the precautions for installing a spark detector?
Location: Priority is installed at risk points such as the outlet of crushing equipment and the elbow of the conveying pipeline, and the pipeline diameter > 500mm should be installed symmetrically. Avoid high-temperature sources and material impact areas during installation. Angle: The probe is at an angle of 30°-45° between the pipe axis and the elbow is ≥ 1.5 meters. Linkage: It needs to be linked with the fire extinguishing device and emergency shut-off valve, and the response time is ≤ 0.5 seconds. You can refer to the experience of linkage control in the construction of bored piles
How to choose the right spark detector?
How to choose the right spark detector?
Detection type: Solid waste treatment and other scenarios need to choose the "spark + hot particle double detection" model to avoid missed reports. For enclosed spaces such as subways, it can be used with a suction smoke detector to improve reliability. Protection level: IP65 and above protection is required for high-dust environments, and the lens needs to be anti-fog and anti-stick coating. Explosion-proof requirements: flameproof detectors (such as Ex d IIB T6) are required for flammable environments. In explosive atmospheres, precautions for spark discharge from motor bearings also need to be considered.
What industries are spark detectors suitable for?
What industries are spark detectors suitable for?
It is widely used in flammable and explosive environments such as solid waste treatment, petrochemical, textile, and pharmaceutical, especially suitable for working conditions with high dust concentration and complex materials. For example, in wire EDM machining, spark detectors can help monitor abnormal discharges during machining
How does a spark detector work?
How does a spark detector work?
Spark detectors detect light signals or ionization signals in the air through photoelectric sensors or ionization sensors to determine whether sparks are generated. Once a spark is detected, an alarm is immediately triggered and the fire extinguishing device is linked. In special scenarios such as wind turbines, non-contact spark detectors can monitor spark formation in real time and trigger safety chains and emergency systems
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