Flame-Free Explosion Venting Device Manufacturer (Elevator Flame Arrester and Explosion Vent)

A flameless explosion venting device is a safety apparatus designed to protect equipment and personnel by automatically shutting down equipment or pipelines in the event of an explosion or fire, thereby preventing the spread of flames or the escalation of an explosion. Its operational principle involves detecting changes in gas pressure and temperature inside pipelines or equipment to assess the risk of explosion or fire. If a hazard is confirmed, the device immediately shuts down the equipment or pipeline while releasing pressure to safeguard both equipment and personnel.

Flameless Explosion Venting Device Manufacturer (Elevator Fire-Resistant Venting and Explosion Relief Device)Brief Introduction:

1. It consists of two parts: an explosion venting panel and a flame extinguishing module;

2. Suitable for flameless venting of dust explosions in indoor equipment. It offers high venting efficiency and is cost-effective;

3. Effectively blocks flames and heat, providing a safe environment for equipment, buildings, and personnel. It also collects dust efficiently, reducing environmental pollution;

4. When used in combination with an isolation valve, it not only prevents pressure waves and flames from propagating to upstream production areas but also mitigates secondary explosions, reducing property damage and ensuring personnel safety.

Product Parameters:

Static opening pressure: 0.01 MPa;

Frame material: Carbon steel or stainless steel;

Fire-resistant material: 304SS;

Applicable dust: St1 and St2 dust with Kst ≤ 300 barg*m/s, with effective venting area meeting explosion relief requirements;

Product classification: Based on operational conditions, it can be divided into rectangular flameless explosion venting devices and curved flameless explosion venting devices;

Applicable equipment: Dust collectors, bucket elevators, drying equipment, cyclone separators, dust collectors;

Industries: Wood processing, plastics, spraying, food and dairy, plastic and dye processing, grain storage and processing, pharmaceuticals, coal processing, brewing, chemicals, metal processing, chemicals, power, cement, and other industries.

Flameless Explosion Venting Device Manufacturer (Elevator Fire-Resistant Venting and Explosion Relief Device)Working Principle:

The flameless venting device consists of two parts—an explosion-proof panel and a fire extinguishing module. The explosion-proof panel responds to the rapid increase in deflagration pressure, immediately opening to reduce pressure. When the expanding fireball passes through the open explosion-proof panel, it is intercepted by the fire extinguishing module. The precision stainless steel mesh, supported by a frame, acts as a three-dimensional flame trap, extinguishing the flame to prevent propagation and avoid secondary or multiple explosions. The fire extinguishing module eliminates deflagration flames, reduces the temperature of hot gases, and captures both burning and unburned dust passing through the open explosion-proof panel.

Simultaneously, pressure waves or noise generated by production equipment are significantly reduced. As flames pass through the mesh flame arrestor element, heat exchange occurs between the element and the flame, rapidly cooling the high-temperature flame, releasing pressure and smoke, while also reducing pressure waves or noise generated by the production equipment.

Application Fields:

Widely used in industries such as grain, metallurgy, chemicals, power, light industry, tobacco, pharmaceuticals, machining, and solid waste treatment. Applicable equipment includes cyclone separators, bag dust collectors, dust collectors, cartridge filters, pneumatic conveying systems, rod or ball mills, bucket elevators, dryers and ovens, roller grinding, and buildings.

With increasingly stringent environmental inspections, safety has become a major concern. In the past, explosion venting panels were commonly installed on dust collectors to release overpressure caused by dust explosions. However, such installations on indoor equipment are not permitted by safety regulations because they endanger surrounding personnel and equipment. The pressure waves and flames from an explosion could trigger secondary or multiple explosions, posing risks. Therefore, relying solely on explosion-proof panels for dust collectors is unreliable. We recommend using flameless explosion venting + isolation technology (a more economical solution) or suppression + isolation technology to ensure production safety.

There are three main methods for dust explosion protection: venting, isolation, and suppression.

Venting: Releases explosion pressure in advance through a pressure relief device to protect equipment from damage.

Isolation: Uses an isolation valve to block the explosion and prevent flame propagation.

Suppression: Detection devices identify sparks and activate fire extinguishing systems to instantly suppress flames, preventing explosions.