专注通风管道加工·排烟罩

通风管道是通风和空气调节体系的主要组成有些，它把通风、空调体系的进风口，空气的热、湿及净化处理设备，送(排)风口、部件和风机连变成一个全体，使之有用运转。下面来针对济南通风管道加工的相关知识进行介绍。

Ventilation ducts are the main components of the ventilation and air conditioning system. They connect the air inlets of the ventilation and air conditioning system, the heat, humidity and purification treatment equipment of the air, the air supply (exhaust) outlets, components and fans into a whole to make them work effectively. Next, we will introduce the relevant knowledge of Jinan ventilation pipe processing.

通风管道的规划使命，便是要合理地安排空气活动，在确保运用作用的前提下，使工程初投资和运转维护费用省。因而，通风管道规划是不是合理，直接影响到全部通风、空气调节工程缔造和运用的技能经济作用.由此可见，统筹思考通风管道规划中的各种疑问足十分主要的。

The planning mission of the ventilation duct is to reasonably arrange air activities, and save the initial investment and operation and maintenance costs of the project on the premise of ensuring the use role. Therefore, whether the ventilation duct planning is reasonable or not directly affects the technical and economic effects of the creation and application of all ventilation and air conditioning projects. It can be seen that it is very important to comprehensively consider various questions in the ventilation duct planning.

基本要求：

Basic requirements:

1.把握通风管道内活动阻力(冲突阻力和有些阻力)的核算办法和压力散布规则;

1. Grasp the calculation method and pressure dispersion rules of the activity resistance (conflict resistance and some resistance) in the ventilation pipe;

2.熟练把握比摩阻、典型有些构件的有些阻力系数的断定办法;

2. Master the determination methods of specific friction and some resistance coefficients of typical components;

3.把握均匀送风管道规划核算的原理和办法;

3. Grasp the principles and methods of planning and accounting of uniform air supply pipeline;

4.把握风管的安置和挑选;

4. Grasp the placement and selection of air ducts;

5.了解气力输送体系的管道核算和气一固两相流的阻力特性;

5. Understand the pipeline accounting of pneumatic conveying system and the resistance characteristics of gas-solid two-phase flow;

6.能断定风管体系中风机的作业点。

6. Be able to determine the operation point of the fan in the air duct system.

风管内空气活动的阻力

Resistance of air movement in air duct

空气沿风管活动的阻力有两种，一种是因为空气自身的粘滞性及其和管壁之间的冲突而发生的沿程能量丢失，称为冲突阻力或沿程阻力;另一种是空气在流经风管中的管件和设备时，因为流速的巨细或方向改变及随之发生的涡流形成对比集中的能量丢失，称为有些阻力。

There are two kinds of resistance of air movement along the air duct. One is the energy loss along the air due to the viscosity of the air itself and the conflict between the air and the pipe wall, which is called the conflict resistance or the resistance along the air duct; The other is that when the air flows through the pipe fittings and equipment in the air duct, the energy loss is relatively concentrated due to the change of the flow velocity or direction and the subsequent vortex, which is called some resistance.

依据流体力学原理，空气沿任何断面不变的直管活动时，冲突阻力可按下式核算：

According to the principle of fluid mechanics, when the air moves along the straight pipe with any section unchanged, the conflict resistance can be calculated according to the following formula:

冲突阻力系数入与风管内空气的活动状况和管壁的粗糙度有关.在通风和空调体系中，薄钢板风管的空气活动状况大多归于紊流润滑区到粗糙区之间的过渡区.通常，即便高速风管的活动状况也处于过渡区.只需风管直径很小，外表粗糙的砖，混凝土风管内的活动状况才归于粗糙区。

The conflict resistance coefficient is related to the air movement in the duct and the roughness of the duct wall In the ventilation and air conditioning system, the air activity of the thin steel duct is mostly attributed to the transition zone between the turbulent lubrication zone and the rough zone. Generally, even the activity of the high-speed duct is in the transition zone Only the bricks and concrete air ducts with small diameter and rough appearance can be classified as rough areas.

通风管道加工的相关知识介绍就讲解都这里了，您对此如果存有什么疑问的话，就来我们网站http://www.jnqsg.com进行咨询了解吧。

The introduction of relevant knowledge of ventilation pipe processing is here. If you have any questions about this, please come to our website http://www.jnqsg.com Consult and understand.