CNC Flame Cutting Machine Tempering Preventer Introduction
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The flame retarder of CNC flame cutting machine is a safety device installed behind the gas pressure gauge and connected to the pipeline. Its role is to prevent the tempering during the gas welding gas cutting process from happening. Avoid the flame from entering the gas cylinder. explosion. It can be said that the flashback preventer is a very important component for flame cutting. In order to let everyone know more about the function characteristics of the flashback preventer, a brief introduction will be made to the classification of the flashback preventer.
1. The medium pressure closed type tempering preventer, which is also called safety water seal, is an effective safety device. For medium pressure acetylene busbars or medium pressure acetylene generators. During normal operation, acetylene enters the water tank from the air inlet pipe, pushes open the check valve, acetylene escapes from the water, collects on the water surface, passes through the outlet pipe, and enters the dry tempering preventer and torch from the acetylene pipe. . When onset of tempering, the pipeline flame reverse activity, enter the outlet pipe back into the barrel, the pressure in the barrel increases, the hydraulic pressure is closed to the check valve, and the intake pipe is sealed. At the same time, the extinguishing gas pressure lifts the top spring plate, the bleed air valve opens, the extinguishment gas rushes out of the air outlet, and is discharged into the atmosphere. The medium pressure closed type temper preventer can effectively prevent the acetylene flame from being burnt back to the acetylene bus or the medium pressure acetylene generator. Special attention is paid to thinking about antifreeze in icy weather!
2. Medium pressure explosion-proof membrane dry tempering preventer Medium pressure explosion-proof membrane dry tempering preventer, small size, light weight, simple structure, can be installed in the workshop of the acetylene pipeline each port on the cut-off valve, or medium pressure explosion-proof membrane The dry tempering preventer is connected to the torch. When the torch is backfired, the flame inside the tube reversely moves into the outlet pipe of the medium pressure explosion-proof membrane dry tempering preventer, and then back into the small explosion chamber, the pressure in the explosion chamber increases sharply, and the pressure instantly breaks the explosion-proof membrane. The flame burst out of the explosion-proof membrane. At the same time, due to the increased pressure in the cavity of the valve body, the check valve lifts up and seals the inlet pipe, reaching the purpose of stopping the supply of gas and preventing the backfire.
The central flashback preventer central CNC cutting machine tempering preventer is formed by a plurality of medium pressure type tempering preventers in parallel. It must be placed in a separate single-story house or in an isolated site. There should be a corresponding gap between the central flashback preventer and the acetylene busbar. When the buried acetylene pipeline is connected, the buried pipeline leads out of the air. After the pipeline is connected, the pipeline is re-entered publicly. The trench depth of the pipeline, the general ditch depth is 200 to 300 mm, the ditch width is 200 mm, and the ditch is covered with a cover plate. The pipeline enters the workshop and is erected straight along the longitudinal axis of the workshop or at a slight distance from the wall. The height from the air is about 2 to 2.8 meters.
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