风管制作是要注意的五大特点

发布人：http://www.sftfgd.com   发布时间：2017-07-06 17:19:11

1、风管段制作。风管段加工制作时，必须注意边角位置的漏洞。应该以机械密封为主，辅助以密封胶处理。每段管道加工成型后，需要作质量检查。从现场施工考察，角铁法兰强度及密封性能，远高于共板法兰。在变风量系统中，建议使用角铁法兰为主。

1 、 duct section making. When making the duct section, we must pay attention to the loophole of the corner position. Mechanical seal should be the main, auxiliary sealant treatment. After each pipe is machined, quality inspection is required. From the construction site inspection, strength and sealing performance of the flange angle, far higher than the flange. In VAV systems, recommend the use of angle iron flange.

2、风管弯头制作。风管弯头位置应按规范要求设置倒流片，特别是尺寸较大弯头，会影响气流及造成局部噪音。在导流片设定时，应注意合理位置及片数。变风量系统中，风量是根据末端需求而变化。由于风管内流速、流量会发生变化，因此弯头合理的设置会有利于减少局部阻力。

2, wind pipe bend production. The elbow position of the air pipe shall be provided with backflow sheets according to the specifications, especially the larger size elbow, which will affect the airflow and cause local noise. When setting the deflector, we should pay attention to the reasonable position and the number of slices. In VAV systems, the air flow varies according to the end demand. Since the flow velocity and flow rate in the air duct will change, the reasonable setting of the elbow will be beneficial to reduce the local resistance.

3、风管法兰制作。由于风管采用钢板法兰连接，尺寸较大的三通、弯头等制作需要拼接板材。但是，钢板法兰位置严格不允许拼接。其强度不能达到要求，须采用角钢法兰或按设计及规范要求处理。在变风量系统中，由于管道内保持较稳定的静压状态，对风管强度及密封性能要求较高。

3 、 wind pipe flange production. Because the wind pipe adopts the steel plate flange connection, the bigger size three way, the elbow and so on need to splice the plate. But the plate flange position is strictly not allowed to splice. The strength can not meet the requirements. The angle steel flange shall be adopted or designed according to the requirements of the design and specifications. In variable air volume system, because of the steady static pressure in the pipeline, the strength and sealing performance of the duct are higher.

4、风管三通制作：在VAV变风量系统中，由于三通两侧的风量在不同工况下会发生变化，而隔板或倒流片会严重限制了风量的分配，因此三通位置不能加装导流板或中间加固隔断。但部件强度必须符合设计及规范要求，请采用角钢法兰或按设计及规范要求加固处理。

4, the wind pipe three through production: VAV in VAV systems, since the three links on both sides of the air will change under different conditions, and the partition or reflux sheets will severely limit the volume distribution, so the three position can't be added with guide plate or intermediate partition reinforcement. But the strength of the components must comply with the requirements of the design and specifications. Please use angle steel flanges or design and specifications as required.

5、风管分支管制作：在风管系统中（不论是定风量或变风量），弯头、三通位置不得直接开分支管，该部位会产生涡流，形成很大的阻力，使各个分支管风量难以调节，而且会产生局部噪音。

5, the wind pipe branch pipe production: in ductwork (whether fixed air volume and variable air volume), elbow, three position shall not directly open branch pipe, the region will produce eddy current, forming a great resistance, so that each branch pipe air volume is hard to adjust, and will generate local noise.