Installation method of laboratory ventilation ducts

We all know that the laboratory is the need for ventilation,  then you need to install the ventilation pipe, then the laboratory  ventilation pipe how to install it? The following by the Zhengzhou  cyberspace to introduce you.

       1. Laboratory ventilation pipe installation method:
 
Can  be in the ground on the trunk and branch pipe section connected,  according to the lifting situation and duct connection, straight pipe  each section length of about l0m or so. Between the flange to add a gasket, connect the flange bolts and nuts should be on the same side. Before installation, should check the support, hanger is solid and accurate. At  high altitude, the rope of the hoisting duct should be lumped and  solid, and the ducts and fittings should be firmly connected and fixed  through the bracket. The vertical duct can be connected from the bottom up section section  of the connection, after installation with wire hammer to find.
 
2. Pre-installation of laboratory ventilation ducts:
 
The processing of finished air duct and accessories, in the  installation site on the ground, according to the order group, review,  and check the quality of duct accessories, if meet the requirements of  the site before the official installation.
 
3. Duct installation technical requirements:
 
① The vertical closure of the duct requires a staggered arrangement and can not be placed in the lower part of the duct.
② ducts and fittings of the detachable joints shall not be set in the wall and floor. Straight ducts should be isolated from the floor when they are floated.
③ the deviation of the duct should not be greater than 3mm per meter,  the total deviation should not be greater than 20mm; vertical tolerance,  per meter should not be greater than 2mm, the total deviation should  not be greater than 20mm.
④ When the air relative humidity within the duct is greater than 60%,  there should be slope to the drainage device 0.O1-0.15 slope.
⑤ straight pipe each section of the connection point should be from  the floor or wall of not less than 200mm, in order to facilitate the  operation.
 
It  can be seen from the above, the laboratory ventilation duct is used for  air transport and distribution of the pipeline system.