The expansion joint technology of ventilation pipeline is a non excavation local collar repair method. The main materials used in this technology are annular rubber water stop sealing belt and stainless ventilation pipe expansion joint. Rubber ring double expansion ring is installed at the pipe interface or local damaged part. After the ventilation pipe expansion joint is in place, it is fixed with 2-3 ventilation pipe expansion joints to achieve water stop. The expansion joint of the ventilation pipeline has fast construction speed, good quality stability, and can withstand interface dislocation. The anti internal pressure effect of the water stop collar is better than that of the external pressure, but it has an impact on the water flow pattern and the cross-section. In the non excavation of the drainage pipeline, it is usually used in combination with the drilling grouting method. The expansion joint of the ventilation pipe is mainly used for water leakage at the interface of the large-diameter pipe (the pipe diameter is not less than 800mm). The general process is as follows: according to the inner diameter of the pipe, first customize the stainless steel strip and rubber strip in the factory, and then enter the pipe for installation. First fix the rubber strip manually, and then press the expansion joint of the ventilation pipe with the sealing rubber ring through the pipe, so as to complete the local anti-seepage of the pipe. If necessary, grouting can be carried out for the leakage of the pipe.

通风管道伸缩节

Expansion joint of ventilation duct

安装流程

Installation process

1.确定需要安装通风管道伸缩节管段，在待管段上下游各一个检查井内放置通风管道伸缩节保证待管段内临时断水；

1. It is determined that it is necessary to install the expansion joint of the ventilation pipe. The expansion joint of the ventilation pipe shall be placed in the inspection shaft at the upstream and downstream of the pipe section to ensure that the water supply in the pipe section to be temporarily cut off;

2.将管道内清洗干净；

2. Clean the pipeline;

3.由于管径DN800由工作人员直接进入管道确定位置；

3. Since the pipe diameter is DN800, the staff directly enter the pipeline to determine the position;

4.准备好通风管道伸缩节材料，先将环状橡胶内衬于管道表面，再将通风管道伸缩节紧贴环状橡胶使其固定管道表面工序结束后，确认漏水点全部止水；

4. Prepare the materials of the expansion joint of the ventilation pipe. First, put the annular rubber lining on the pipe surface, and then close the expansion joint of the ventilation pipe to the annular rubber to fix it on the pipe surface. After the process is completed, confirm that all the water leakage points are sealed;

5.TV内窥检测（或人工拍照），确定管段后，是否已，作下记录；

5. TV endoscope inspection (or manual photo taking) to determine whether the pipe section has been recorded;

6.路面恢复；

6. Pavement recovery;

通风管道伸缩节

Expansion joint of ventilation duct

7.整理竣工资料，备案。

7. Sort out the completion data and put it on record.

通风管道伸缩节使用要求：

Requirements for use of expansion joints of ventilation pipes:

（1）通风管道伸缩节设，首先要确定原管道的管道直径，确保通风管道伸缩节外径被管道的内径之间的修正关系。

(1) When designing the expansion joint of the ventilation pipe, the pipe diameter of the original pipe shall be determined first to ensure the correction relationship between the outer diameter of the expansion joint of the ventilation pipe and the inner diameter of the pipe.

（2）采用通风管道伸缩节局部内衬法施工时，通风管道伸缩节的设计制作宽度满足管段处的长度。

(2) When the local lining method of ventilation pipe expansion joint is adopted for construction, the design and fabrication width of ventilation pipe expansion joint shall meet the length of the pipe section.

（3）通风管道伸缩节与旧管道一起组成复合管道使用，内衬管设计壁厚满足旧管道损坏地下水的渗漏压力要求。

(3) The expansion joint of the ventilation pipe is used together with the old pipe to form a composite pipe. The design wall thickness of the inner liner pipe meets the leakage pressure requirements of the old pipe to damage the groundwater.

以上就是为大家介绍的有关济南通风管道的详细的介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以的态度,为您提供服务http://www.jntfgd.com

The above is the detailed introduction of Jinan ventilation duct. I hope it will help you. If you have any questions, please contact us. We will provide you with services with a professional attitude http://www.jntfgd.com