专注通风管道加工·排烟罩

1. The air leakage test device shall be a qualified special measuring instrument or a measuring device composed of measuring elements in accordance with the current national standard measuring full pipe fluid flow with differential pressure device installed in circular section pipeline (gb2624).

2、正压或负压风管系统与设备的漏风量测试，分正压试验和负压试验两类，可采用正压试验的测试来检验。

2. The air leakage test of positive pressure or negative pressure air duct system and equipment is divided into positive pressure test and negative pressure test, which can be tested by positive pressure test.

3、风管系统漏风量测试可整体或分段进行。

3. The air leakage test of air duct system can be carried out as a whole or in sections.

4、风管系统漏风量测试应按下列步骤进行：

4. The air leakage test of air duct system shall be carried out according to the following steps:

①测试前，被测风管系统的所有开口处均应严密封闭，不得漏风。

① Before the test, all openings of the tested air duct system shall be tightly closed without air leakage.

②将专用的漏风量测试装置用软管与被测风管系统连接。

② Connect the special air leakage test device with the measured air duct system with a hose.

③开启漏风量测试装置的电源，调节变频器的频率，使风管系统内的静压达到设定值后，测出漏风量测试装置上 流量节流器的压差值△P。

③ Turn on the power supply of the air leakage test device, adjust the frequency of the frequency converter to make the static pressure in the air duct system reach the set value, and then measure the pressure difference △ P of the flow restrictor on the air leakage test device.

④测出流量节流器的压差值△P后，按公式Q=f(△P)(m³/h)计算出流量值，该流量值Q(m³/h)再除以被测风管系统的展开面积F(㎡)，即为被测风管系统在实验压力下的漏风量QA[m³/(h·㎡)]。

④ After measuring the pressure difference △ P of the flow restrictor, press the formula q = f (△ P) (M ³/ h) Calculate the flow value, which is Q (M ³/ h) Divided by the developed area f (㎡) of the tested air duct system, it is the air leakage QA [M] of the tested air duct system under the experimental pressure ³/( h·㎡)]。

5、当被测风管系统的漏风量QA[m³/(h·㎡)]超过设计或本规程的规定时，应查出漏风部位(可用听、摸、观察、肥皂水或烟气检漏)，做好标记;并在修补后重新测试，直合格。

5. When the air leakage of the measured air duct system is qa[m ³/( H · ㎡)] when it exceeds the provisions of the design or this specification, find out the air leakage part (listen, touch, observe, soapy water or smoke leak detection) and mark it; And retest after repair until qualified.

6、风管漏风量测试用测量工具或检测仪器应符合表6的规定。

6. Measuring tools or instruments for air leakage test of air duct shall comply with the provisions of table 6.