With the improvement of the living standard of decoration, the hotels where people need to eat can be cheap and have a good environment. If the exhaust pipe of the kitchen is not handled well, it will affect people's dining room. Day by day, people gradually find that the installation of the ventilation pipe some years ago has certain damage, or it doesn't work, and Shandong ventilation cabinet can't smoke out. What should we do to fight for it?
(1) It shall be set above the highest smoke outlet of the smoke exhaust system and in the machine room separated by partition wall, and the fire resistance limit of the partition wall shall not be less than 2.5h. The door of the machine room is fire door, and the fire limit is not less than 0.6h.
(2) For the convenience of maintenance, the distance between fan shell and wall or equipment shall not be less than 60cm.
(3) The connection between exhaust fan and exhaust pipe shall be reasonable. Practice has proved that the improper connection between exhaust fan and exhaust pipe often leads to a significant decline in fan performance.
(4) There shall be linkage between exhaust fan and exhaust port. When any exhaust port is opened, the exhaust fan can start automatically. Once the alarm is given, a cow fire is confirmed, the smoke outlet shall be opened manually or remotely by the fire control room and the smoke exhaust fan shall be put into use immediately, and the ventilation and air conditioning system shall be closed immediately in the fire area.
(5) Exhaust fan shall be set on concrete or steel foundation, but vibration damper shall not be set, and regulating device shall not be set on fan suction pipe.
1. pipe blanking
(1) Strictly follow the drawings. Before cutting, carefully check whether the size of the material is correct.
(2) Material waste shall be avoided during cutting.
(3) When the pipe is special, the material shall be discharged first and then cut to control the pipe consumption.
(4) If stainless steel pipe is adopted, mechanical cutting or plasma cutting shall be adopted, and flame cutting can be adopted for the rest.
(5) The inclination deviation of the end face of the incision shall not exceed 2mm.
2. Groove preparation
According to the requirements of the specification, the connection mode is mainly welding. If it is the groove of medium and low pressure pipeline, V type shall be used; for high pressure pipeline, YV groove shall be used. Groove processing shall be flat and free from any defects.
3. Welding joint assembly
This is for the pipeline group, before that, we have to clean up the pipeline interface.
4. Pipeline prefabrication
Pipe prefabrication shall be carried out in strict accordance with prefabrication tolerance, and prefabricated parts shall be numbered according to quality control requirements.