Flameless explosion relief device is a device used to protect equipment and personnel. It can automatically shut down equipment or pipelines in case of explosion or fire, to prevent the fire from spreading or expanding. Its working principle is to judge whether there is a danger of explosion or fire by detecting the gas pressure and temperature changes inside the pipeline or equipment. If the danger is confirmed, the equipment or pipeline will be immediately closed, and the pressure will be released to protect equipment and personnel.
410 * 410 flameless explosion relief device (explosion relief device for dust removal pipeline) brief introduction:
1. The utility model is composed of an explosion relief plate and a flame extinguishing template;
2. It is suitable for dust explosion and flameless discharge of indoor equipment. High explosion relief efficiency, economical and practical;
3. It can effectively prevent flame and heat, provide safe places for equipment, buildings and mobile personnel, and effectively collect dust to reduce environmental pollution;
4. The combination with the explosion-proof valve can not only effectively prevent the pressure wave and flame from spreading to the production site of the upstream workshop, but also prevent the occurrence of the second explosion accident, reduce property losses and protect personnel safety.
Product parameters:
Static opening pressure: 0.01MPa;
Frame material: carbon steel or stainless steel;
Fire retardant material: 304SS;
Applicable dust: dust of St1 and St2 with Kst less than or equal to 300barg * m/s, and the effective venting area meets the venting requirements;
Product classification: according to different operating conditions, it can be divided into rectangular flameless explosion relief device and arc flameless explosion relief device;
Applicable equipment: dust remover, bucket elevator, drying equipment, cyclone separator, dust collector;
Application industries: wood processing, plastics, spraying, food and dairy products, plastics and dye processing, grain storage and processing, pharmaceuticals, coal processing, wine making, chemicals, metal processing, chemicals, electricity, cement and other industries.
Working principle of 410 * 410 flameless explosion relief device (explosion relief device for dust removal pipeline):
The flameless relief device consists of two parts - explosion-proof plate and fire extinguishing module. The bursting plate responds to the rapid rise of the detonation pressure and opens immediately to reduce the pressure. When the expanded fireball passes through the open explosion-proof plate, it is intercepted by the fire extinguishing module. The stainless steel precision mesh wire with frame support plays the role of three-dimensional flame capture, extinguishes the flame, and ensures that the flame is not spread, thus causing secondary explosion or multiple explosion. The fire extinguishing module eliminates the deflagration flame, reduces the temperature of hot gas, and captures the burning and unburned dust passing through the open explosion-proof plate.
At the same time, the pressure wave or noise generated by the production equipment will also be reduced to a small degree. When the flame passes through the mesh flame arresting element, the flame arresting element will conduct heat exchange with the flame, quickly cool the high temperature flame, and release the pressure and smoke. At the same time, the pressure wave or noise generated by the production equipment will also be reduced.
Application field:
It is widely used in grain, metallurgy, chemical industry, electric power, light industry, tobacco, pharmacy, machining, solid waste treatment and other industries. The applied equipment includes cyclone separator, bag type dust collector, dust collector, filter cartridge filter, pneumatic conveying, rod or ball mill, bucket elevator, drying and drying oven, roll grinding, buildings, etc.
Today, with the increasingly strict environmental protection inspection, safety has attracted more and more attention. In the past, we often used to install a vent plate on the dust collector to release the overpressure generated by dust storms in the dust collector. However, the installation of indoor equipment in this way is not allowed by the safety supervision office, because it will endanger the surrounding personnel and equipment, and the pressure wave and flame generated by the explosion may cause secondary explosion or multiple explosion, resulting in risks. Therefore, it is not reliable to use the explosion-proof plate alone for the dust remover. Therefore, we recommend that the dust remover use flameless venting isolation technology (this scheme is economical) or explosion suppression isolation technology to protect production safety.
There are three main ways of dust explosion prevention: explosion relief, explosion isolation and explosion suppression
Explosion relief: the explosion pressure is released in advance through a pressure relief device to protect the equipment from damage.
Flameproof: the explosion is blocked by an explosion-proof valve to prevent the flame from spreading.
Explosion suppression: the detection device detects the spark formed, and then feeds back to turn on the fire extinguishing device to extinguish the fire instantly to prevent explosion.
