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      Matters needing attention in installation of throat hoop

      Time: 2021-03-03 11:40:49

      Author: 天津科威緊固件有限公司

      Click:

      Matters needing attention during the installation of throat hoop: 1. Factors affecting the installation quality (1) the throat hoop shall not have defects such as air hole, sand hole, shrinkage crack,

      Matters needing attention in installation of throat hoop

      1. Factors affecting installation quality

      (1) The throat hoop shall be free of air hole, sand hole, shrinkage crack and other defects.

      (2) The material and performance of the sealing ring shall meet the requirements. There shall be no bubbles, impurities, cracks, uneven concave convex defects on the sealing surface. Aging rubber ring shall not be used.

      (3) Theoretically, the moving distance of the clamp ring in the clamp is half of the expansion amount of the joint, and the actual amount should be measured. If it can not reach the actual amount, it can not meet the expansion amount requirements of the pipeline. In order to improve the sealing effect, the left and right end pipes are matched with the clamp before leaving the factory. In practical engineering, it is not suitable to use ordinary pipe to directly replace the end pipe. Moreover, there are certain requirements for the perpendicularity between the end face of the end pipe and the axis and the flatness of the end face itself. If the size is not standard, the expansion of the joint will be greatly reduced, which can not meet the use requirements.

      (4) The dimension of end pipe diameter should be selected with positive deviation, otherwise the compression force of clamp on sealing ring is not enough, which will affect the sealing effect of joint.

      2. Precautions during installation

      (1) The distance L between the snap ring and the end tube should be controlled. The control of l should be combined with the instruction manual. When the gap between the two pipe ends is small, make sure that the snap ring is just close to the inclined plane.

      (2) When the snap ring position is determined, the gap between the two pipe ends should be determined by calculation according to the elongation of the pipe and the ambient temperature during construction. The deviation of dimension should be ensured during construction.

      (3) Under the premise of a certain moving distance, the larger the weld height and width of the clasp and the end pipe, and the Perpendicularity Error of the clasp plane and the end pipe axis, the smaller the expansion of the joint, and the worse the use effect.

      (4) The spatter impurities during the welding of end pipe and snap ring affect the sealing of end pipe. The welding slag on the sealing surface shall be removed before installation to ensure the sealing effect.


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      Address: 200m east of dongtantou village, Yanzhuang Town, Jinghai District, Tianjin

       

      Contact person: Manager Huo       Tel: 133-7031-4999        Website: www.ab8ra6.com

       

      Copyright@ Tianjin Kewei Fastener Co., Ltd.    2021-03      Technical support: Yuhua Huda

       

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