The installation of a two-way directly buried compensator is a professional job that requires strict adherence to manufacturer's guidelines and engineering specifications. Here are some basic installation steps and precautions, but keep in mind that you always consult and follow the detailed installation instructions and relevant engineering standards provided by the manufacturer before you do so:
Preparation before installation
Check compensator：
Verify that the specifications and models of the compensator are consistent with the design requirements.
Check the appearance of the compensator to ensure that there is no damage, rust, or any defect that may affect performance.
Site Condition Confirmation：
Ensure that the depth and width of the pipe trench at the installation position meet the design requirements.
The site should be clean to avoid the pollution of dust and moisture to the compensator.
Tool and Material Preparation：
Prepare the necessary installation tools, such as lifting equipment, welding equipment, measuring tools, etc.
Make sure all welding materials and sealing materials are available.
Installation Steps
Positioning and placement：
Place the compensator gently in a predetermined position, ensuring that it is located between the two fixed points.
Use the hoisting equipment to lower it smoothly and avoid collisions.
Alignment and connection：
Make sure the compensator is aligned with the adjacent pipe, pay attention to the direction of media flow, and for directional compensators, make sure the direction is correct.
Connect the compensator to the pipe by welding or flanged connection.
Pre-stretched or pre-compressed：
Depending on ambient temperature and expected media temperature changes, pre-stretching or pre-compression of the compensator may be required to reserve sufficient compensation space.
This step should strictly follow the manufacturer's guidance.
Fixing and adjusting：
Install fixing brackets to ensure the stability of the compensator in the pipe.
Adjust the position of the compensator to ensure it is coaxial with the pipe and avoid eccentricity.
Welding & Inspection：
Weld the joint to ensure the quality of the weld.
Perform a hydraulic test to check for leaks.
Secondary fastening：
After 24 hours of system operation, re-check and tighten the bolts at both ends of the packing chamber to ensure a seal.
Insulation and backfill：
Insulate the compensator and its surrounding pipelines to ensure that the insulation layer is intact.
Use fine sand to fill the surroundings of the pipe trench to avoid direct contact of hard objects with the compensator, and then cover the original soil.
Special Considerations
Guidance and Support: Ensure that there are sufficient guide brackets and fixed brackets on both sides of the compensator to control the direction of movement of the pipe and avoid lateral displacement.
Avoid water accumulation: Ensure that there is no water accumulation around the compensator to avoid corrosion caused by long-term soaking of the bellows.
Adherence to specifications: Comply with relevant safety codes and construction standards throughout the installation process.
Conclusion
The installation of a bidirectional directly buried compensator involves multiple details and requires precise operation. Any mistakes in installation can cause the compensator to perform poorly or even fail. Therefore, it is highly recommended that the installation be carried out by an experienced professional and consult the manufacturer's technical support if necessary.