The correct installation of ventilation duct in laboratory is a very important link to ensure the effective operation and energy saving of ventilation system. Today, let's take a look at some of the problems that need to be avoided in the installation of laboratory ventilation ducts.
The internal sundries of 01 air duct were not removed before installation
Before the installation of air duct, the internal and external sundries should be removed, and the cleaning and finished products should be done well. After construction, the pipe orifice should be blocked in time. If the sundries are not removed, the system resistance will be increased, and the filter screen and pipeline will be blocked in serious cases.
02 after the installation of air duct system, do not press
Inspection and test of light and air leakage are specified
The measurement of light leakage or air leakage is an inspection measure for the construction quality of ventilation and air conditioning, which must be inspected in strict accordance with the requirements. If the light leakage and air leakage inspection and test are not carried out according to the regulations after the installation of the air duct system, a large amount of air leakage may be caused, making the whole system and project project project unable to meet the use requirements, increasing unnecessary rework and waste, and also wasting energy.
The installation position of 03 air valve is not convenient for operation and maintenance
All kinds of air valves shall be installed at the position convenient for operation and maintenance, and the manhole shall be set in the ceiling or shaft.
04 the distance between supports and hangers of air duct is too large
If the expansion bolt is not used properly, the weight of the air duct will exceed the bearing capacity of the lifting point, and even cause the air duct to fall, which may cause the construction safety hidden danger.
05 air duct system adopts combined type
Air leakage of interface during flange connection
If the air leakage of the interface does not meet the quality standard, the air volume loss of the whole system will be too large to meet the air volume requirements, and cause serious energy waste.
06 joint between brick structure air duct and metal air duct
No embedded parts are set, sealing gap is too large or joint is not tight
The connection interface between air duct and brick and concrete air duct shall be inserted along the direction of air flow, and sealing measures shall be taken. Rain proof device shall be set at the place where the air duct passes through the roof; during construction, embedded parts shall be set at the joint of brick and structural air duct and metal air duct, or the civil engineering unit shall be required to cooperate for sealing to ensure tight connection.
07 flexible short pipe and rectangular short pipe are twisted during installation
Distortion of the short pipe is easy to cause quality problems and also affect the appearance. Special attention should be paid to it when installing.
08 the flexible short pipe of smoke control system is made of flammable materials
The flexible short pipe of smoke control system must be made of non combustible material, and the flexible material with anti-corrosion, moisture-proof, airtight and not easy to mildew should be selected. For air conditioning system, measures should be taken to prevent condensation; for air conditioning purification system, materials with smooth inner wall and not easy to produce dust should be used.
09 air duct system without anti swing support
During the installation of ventilation duct in laboratory, when the length of horizontal suspension main and main air duct is more than 20m, fixed points shall be set to prevent swing, and each system shall not be less than 1. If not, air duct movement and vibration will occur during system operation.
With the summary of the air purification project, I hope it can help our customers. If you have any questions or ask for help, please click our website: http://www.jnyhrs.com Or call consultation, we will try our best to solve it for you