Temperer is a safety device used to eliminate or suppress possible backfire (flame backflow) in gas pipelines, valves, or equipment, widely used in fields such as gas, welding, chemical engineering, and laboratories. According to different working principles and application scenarios, tempering machines are mainly divided into the following categories:
1. Mechanical tempering machine
This type of tempering device blocks flame propagation through physical structures, and common types include:
Flame arrester (flame arrester valve)
Porous plate/corrugated plate: Utilizing narrow channels between metal plates to dissipate heat and extinguish flames.
Metal wire mesh type: extinguishes flames through the thermal conductivity and barrier effect of the wire mesh.
Filler particle type: ceramic or metal particles are filled inside to block flames and absorb heat.
Check valve type
By relying on the direction of airflow to automatically open and close valves, it prevents reverse flame propagation and is often used in conjunction with flame arresters.
2. Hydraulic tempering device (water sealed tempering device)
Gas is introduced into water, and the flame is cooled and extinguished when it comes into contact with water.
Commonly found in traditional industrial scenarios such as gas generators and acetylene generation systems, but gradually replaced by mechanical ones.
3. Chemical/reactive tempering apparatus
Blocking the chain reaction of combustion through chemical reactions, such as consuming oxygen or releasing inhibitors.
Mostly used in special industrial environments (such as high-pressure, explosive gases).
4. Automatic cut-off tempering machine
Built in sensors (such as temperature, pressure, or optical probes) detect tempering and instantly cut off the gas source.
Commonly used in automation systems with high security requirements.
5. Composite tempering machine
Combining multiple technologies (such as mechanical flame retardant and automatic cutting) to provide multiple protections.
For example, the combination of “check valve+flame arrester+pressure release device” is commonly used in the gas path system of welding and cutting torches.
Temperer is a safety device used to eliminate or suppress possible backfire (flame backflow) in gas pipelines, valves, or equipment, widely used in fields such as gas, welding, chemical engineering, and laboratories. According to different working principles and application scenarios, tempering machines are mainly divided into the following categories:
1. Mechanical tempering machine
This type of tempering device blocks flame propagation through physical structures, and common types include:
Flame arrester (flame arrester valve)
Porous plate/corrugated plate: Utilizing narrow channels between metal plates to dissipate heat and extinguish flames.
Metal wire mesh type: extinguishes flames through the thermal conductivity and barrier effect of the wire mesh.
Filler particle type: ceramic or metal particles are filled inside to block flames and absorb heat.
Check valve type
By relying on the direction of airflow to automatically open and close valves, it prevents reverse flame propagation and is often used in conjunction with flame arresters.
2. Hydraulic tempering device (water sealed tempering device)
Gas is introduced into water, and the flame is cooled and extinguished when it comes into contact with water.
Commonly found in traditional industrial scenarios such as gas generators and acetylene generation systems, but gradually replaced by mechanical ones.
3. Chemical/reactive tempering apparatus
Blocking the chain reaction of combustion through chemical reactions, such as consuming oxygen or releasing inhibitors.
Mostly used in special industrial environments (such as high-pressure, explosive gases).
4. Automatic cut-off tempering machine
Built in sensors (such as temperature, pressure, or optical probes) detect tempering and instantly cut off the gas source.
Commonly used in automation systems with high security requirements.
5. Composite tempering machine
Combining multiple technologies (such as mechanical flame retardant and automatic cutting) to provide multiple protections.
For example, the combination of “check valve+flame arrester+pressure release device” is commonly used in the gas path system of welding and cutting torches.
Classified by application field
Tempering device for welding and cutting: commonly used at the outlet or pipeline of acetylene, oxygen and other gas cylinders to prevent tempering of welding and cutting torches.
Industrial pipeline flashback: used in flammable gas transportation systems such as chemical plants and petroleum refining.
Laboratory tempering apparatus: miniaturized design to protect experimental gas equipment (such as gas chromatography).
Tempering device for respirators: used for medical or firefighting respiratory equipment to prevent external flames from entering.
The key factors in choosing a tempering machine
Medium characteristics: gas type, pressure, flow rate, explosion level.
Installation location: gas cylinder outlet, middle section of pipeline or equipment inlet.
Safety standards: Must comply with national or industry standards (such as GB/T 13347, ISO 16852).
Maintenance requirement: Regularly clean or replace flame retardant components to prevent blockage.