实验室通风系统是实验室中非常重要的一个系统，实验室通风管道的正确安装对于确保通风系统运行有效和节能，是一个很重要的环节。今天我们就来看一下实验室通风管道安装时需要避免的一些问题。

　　The laboratory ventilation system is a very important system in the laboratory, and the correct installation of laboratory ventilation ducts is a crucial step in ensuring the effective and energy-saving operation of the ventilation system. Today we will take a look at some issues that need to be avoided when installing laboratory ventilation ducts.

　　01  风管安装前未清除内部杂物

　　01 Failure to remove internal debris before installing the air duct

　　风管安装前应清除内、外杂物，并做好清洁和成品，施工后及时封堵管口，如不清除杂物，将会造成系统阻力增大，严重时堵塞过滤网和管道。

　　Before installing the air duct, internal and external debris should be removed, and cleaning and finishing should be done well. After construction, the pipe mouth should be promptly sealed. If the debris is not removed, it will cause an increase in system resistance, and in severe cases, it may block the filter screen and pipeline.

　　02  风管系统安装后不按规定作漏光、漏风检查和试验

　　02 Failure to conduct light and air leakage inspections and tests as required after installation of the air duct system

　　漏光或漏风量测定是对通风空调施工质量的一项检验措施，必须严格按要求规范进行检验，若风管系统安装后不按规定作漏光、漏风检查和试验，可能会造成系统大量漏风，使整个系统和项目工程达不到使用要求，增加不必要的返工和浪费，同时也浪费了能源。

　　Leakage or air leakage measurement is an inspection measure for the construction quality of ventilation and air conditioning, which must be strictly inspected according to the required specifications. If the air duct system is not inspected and tested for leakage and air leakage according to regulations after installation, it may cause a large amount of air leakage in the system, making the entire system and project engineering unable to meet the requirements for use, increasing unnecessary rework and waste, and also wasting energy.

　　03   风阀安装位置不便于操作和检修

　　The installation position of the 03 air valve is not convenient for operation and maintenance

　　各类风阀应安装在便于操作及检修的部位，吊顶或井道内设置检修口。

　　All types of air valves should be installed in locations that are easy to operate and maintain, with maintenance ports set up in suspended ceilings or shafts.

　　04   风管支、吊架间距过大

　　04 The spacing between air duct supports and hangers is too large

　　风管支吊架的间距过大，会造成风管变形，影响感官效果；如果膨胀螺栓使用不当，风管的重量超过吊点的承载力甚至会造成风管坠落，出现施工安全隐患。

　　The spacing between air duct supports and hangers is too large, which can cause deformation of the air duct and affect the sensory effect; If the expansion bolt is used improperly, the weight of the air duct may exceed the bearing capacity of the lifting point and even cause the air duct to fall, posing a construction safety hazard.

　　05   风管系统采用组合式法兰连接时接口漏风

　　When the 05 duct system adopts a combination flange connection, there is air leakage at the interface

　　接口漏风不符合质量标准，将会造成整个系统风量损失过大，无法满足风量要求，并造成能源严重浪费。

　　Interface air leakage that does not meet quality standards will cause excessive loss of air volume in the entire system, unable to meet air volume requirements, and result in serious energy waste.

　　06   砖结构风道与金属风管连接处未设预埋件或密封缝隙过大或连接处不严密

　　The connection between the 06 brick structure air duct and the metal air duct is not equipped with embedded parts or the sealing gap is too large or the connection is not tight

　　07   柔性短管、矩形短管安装时产生扭曲

　　Twisting occurs during the installation of flexible short pipes and rectangular short pipes in 07

　　短管扭曲易产生质量问题，也影响美观，在安装时需要特别留意。

　　Twisting short pipes can easily cause quality problems and also affect aesthetics, so special attention should be paid during installation.

　　08   防排烟系统的柔性短管采用易燃材料

　　The flexible short pipe of the 08 smoke control system is made of flammable materials

　　防排烟系统柔性短管的制作材料必须为不燃材料，且应选用防腐、防潮、不透气、不易霉变的柔性材料。用于空调系统的应采取防止结露的措施；用于空调净化系统的还应是内壁光滑、不易产生尘埃的材料。

　　The production material of flexible short pipes for smoke control systems must be non combustible materials, and flexible materials that are corrosion-resistant, moisture-proof, airtight, and not easily moldy should be selected. Measures to prevent condensation should be taken for air conditioning systems; Materials with smooth inner walls and low dust generation should also be used for air conditioning purification systems.

　　09   风管系统不设置防摆支架

　　09 Duct system does not have anti sway brackets installed

　　在实验室通风管道安装时，当水平悬吊的主、干风管长度超过20m时，应设置防止摆动的固定点，每个系统不应少于1个，如果不设置，则系统运行时会产生风管移动、震动。

　　When installing ventilation ducts in the laboratory, if the length of the horizontally suspended main and main air ducts exceeds 20m, fixed points to prevent swinging should be set up, and each system should not be less than 1. If not set up, the air ducts will move and vibrate during system operation.

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