It is suitable for smoke control and extraction systems with special requirements such as commercial and civil buildings, hospitals and subways. Because the flue is difficult to clean, in the field operation, the flue, flue and chimney are also treated in the form of explosion, that is, the natural gas is suddenly ignited after being discharged to a certain amount, resulting in small-scale deflagration, and the carbon deposit on the pipe wall is removed by explosion vibration to achieve the purpose of cleaning.
Current standard:
1, Article 6.8.2 of Code for Residential Design (GB50096-20 1 1) requires that the vent product itself should be an assembled vent product that can prevent all floors from flowing backwards. Article 6.8.2 of the Code for Residential Design (GB50096-20 1 1) also stipulates that the exhaust duct product itself must have backflow prevention structure.
2. The Exhaust Pipe of Kitchen and Toilet in Residential Buildings (JG/T 194-2006) promulgated by the Ministry of Construction is applicable to exhaust pipes made of various raw materials (except sulphoaluminate cement and portland cement, raw materials must obtain relevant new material application certificates).
3. The building materials industry standard "Glass Fiber Reinforced Cement Smoke Exhaust Pipe" (JC/T854—2008) promulgated by the National Development and Reform Commission is applicable to the residential smoke exhaust pipes made of sulphoaluminate cement and silicate cement with alkali-resistant glass fiber mesh. Sulfoaluminate cement and portland cement are the raw materials of exhaust port with stable performance.
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