通風(fēng)管道伸縮節(jié)分類及使用要求

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通風(fēng)管道伸縮節(jié)技術(shù)是一種管道非開挖局部套環(huán)修理方法。該技術(shù)采用的主要材料為環(huán)狀橡膠止水密封帶與不銹通風(fēng)管道伸縮節(jié)，在管道接口或局部損壞部位安裝橡膠圈雙脹環(huán)，通風(fēng)管道伸縮節(jié)就位后用2～3 道通風(fēng)管道伸縮節(jié)固定，達(dá)到止水目的。通風(fēng)管道伸縮節(jié)施工速度快，質(zhì)量穩(wěn)定性較好，可承受接口錯位，止水套環(huán)的抗內(nèi)壓效果比抗外壓要好，但對水流形態(tài)和過水?dāng)嗝嬗杏绊懺谂潘艿婪情_挖中，通常與鉆孔注漿法聯(lián)合使用。

The technology of expansion joint of ventilation pipeline is a non excavation method for repairing local casing ring of pipeline. The main materials used in this technology are the annular rubber water stop sealing belt and the stainless ventilation pipe expansion joint. The rubber ring double expansion ring is installed at the pipe interface or local damaged parts. After the ventilation pipe expansion joint is in place, it is fixed with 2 ~ 3 ventilation pipe expansion joints to achieve the purpose of water stop. The expansion joint of the ventilation pipeline has fast construction speed, good quality stability, and can withstand the dislocation of the interface. 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.

通風(fēng)管道伸縮節(jié)主要用來大口徑管道（管徑不小于800MM）接口處漏水，大致流程：根據(jù)管道的內(nèi)徑，在工廠定制不銹鋼壓條和橡膠條，然后進(jìn)入管道安裝，先手工固定橡膠條，接著通過管道，用密封膠圈壓住通風(fēng)管道伸縮節(jié)，從而完成管道局部防滲，必要時還可以對管道滲漏處進(jìn)行注漿處理

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: 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, the leakage of the pipe can also be grouted

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