Specification for installation of expansion joints in steam pipelines

    The installation specifications for steam pipeline expansion joints mainly include the following aspects:

    1. Installation position selection: The installation position of the expansion joint should be at the turning or changing diameter of the pipeline, in order to absorb the thermal expansion and contraction deformation caused by temperature changes in the pipeline. At the same time, it is necessary to ensure that the installation position of the expansion joint is not compressed or collided with external objects to avoid affecting the normal operation of the expansion joint. In addition, the installation position of the expansion joint should be easy to observe, inspect, and replace.

    2. Installation direction determination: The installation direction of the expansion joint should be consistent with the axis of the pipeline to avoid unnecessary bending and twisting, so as not to affect the service life and performance of the expansion joint. In general, the expansion direction of the expansion joint should be consistent with the expansion direction of the pipeline or equipment to fully exert its compensation function.

    3. Installation spacing setting: The installation spacing of expansion joints needs to be determined based on the expansion amount and the length of pipelines or equipment. Generally speaking, the installation spacing of expansion joints should be maintained within an appropriate range to ensure effective compensation for expansion and contraction.

    4. Installation of fixed bracket: The installation of the expansion joint requires the installation of a fixed bracket to fix the expansion joint and keep it in good working condition. The layout of the fixed bracket should be uniform and reasonable to avoid excessive constraint on the expansion joint. For longer pipeline systems, fixed brackets can be installed at both ends of the expansion joint to better support its function. However, in general, fixed brackets are not required at both ends of the expansion joint.

    5. Installation guide device: The installation position of the expansion joint should be equipped with a guide device to prevent excessive deviation and swing of the expansion joint during the expansion and contraction process, thereby ensuring its normal operation.

    6. Pre installation inspection: Before installing the expansion joint, a comprehensive inspection of the pipeline system is required to ensure the safe and stable operation of the pipeline. At the same time, the expansion joint itself also needs to be inspected to confirm that it is intact and undamaged.

    7. Connection and sealing: The connection and sealing of the expansion joint need to be strictly carried out in accordance with the requirements of the pipeline system to ensure the safe and stable operation of the entire system.

    In addition, there are some specific installation requirements:

    Before installing the expansion joint, its model, specifications, and pipeline configuration must meet the design requirements.

    For expansion joints with inner sleeves, it must be noted that the direction of the inner sleeve is consistent with the direction of medium flow, and the rotation plane of the pivot type expansion joint must coincide with the plane of the inner sleeve.

    For expansion joints that require cold setting, auxiliary parts used for pre deformation should be removed after the pipeline installation is completed.

    It is strictly prohibited to use the method of file expansion joint deformation to adjust the tolerance of the installation mechanism, in order to avoid affecting the normal function of the expansion joint, reducing its service life, and increasing the load on the limb system.

    During the installation process, it is not allowed to apply slag adhesive to the surface of the wave plate, and other mechanical damage to the wave plate is not allowed.

    In short, the installation of steam pipeline expansion joints needs to follow certain specifications and requirements to ensure their normal operation and safe operation. The above content is for reference only. If necessary, it is recommended to consult our company by phone.