Large tie rod expansion joint is a special kind of bellows expansion joint, which is mainly used in pipeline systems to absorb lateral displacement. Here is some guidance on the proper installation method of large tie rod expansion joints:
Preparation
Inspect the expansion joint：
Check whether the model and specification of the expansion joint are consistent with the provisions of the construction drawing.
Inspect the bellows surface for mechanical damage from transportation.
Verify that there are foreign objects inside the expansion joint.
Save：
If not installed for the time being, it is recommended to store the expansion joint in a dry warehouse free of harmful gases.
Considerations Before Installation
Confirm design requirements：
Check the model, specification and configuration design of the expansion joint.
Confirm the flow direction marks of the expansion joints to ensure the correct installation direction.
Transportation & Hoisting：
During transportation and lifting, avoid using sharp tools to scratch the surface of the expansion joint.
Use a suitable spreader to ensure that the bellows are not damaged.
Installation Steps
Laying pipelines：
Lay a straight pipe fixed to one end of the pipe section.
Both ends of the expansion joint are fixed to the pipe directly matched therewith by welding or flanging in advance on the ground.
Reserved spacing assembly：
Ensure that the connection of the expansion joint to the pipe meets the reserved spacing required by the design.
Install the tie rod：
Install the tie rod to limit the lateral displacement of the expansion joint, ensuring that it can only be displaced laterally.
The installation of the tie rod should ensure that the expansion joint can be expanded and contracted freely to avoid twisting.
Adjustment of positioning nut：
In installing the expansion joint, do not loosen the positioning nut or remove the transport rod or "bridge" until after the installation inspection of the expansion joint and various pipe brackets passes, the inner positioning nut on the large tie rod must be screwed to the root of the thread immediately before performing the pressure test, and the special transport screw or "bridge" must be removed immediately.
Be careful not to loosen the outer nut of the large tie rod.
Installation direction：
If the expansion joint is equipped with a guide pipe, ensure that the media flow direction sign is consistent with the media flow direction, avoid the reverse ramp direction, and prevent the corrugated pipe from washing and corroding.
Installation Considerations：
Avoid welding slag splashing onto the bellows surface during installation to prevent damage.
Ensure that all movements of the expansion joint are not restricted by external components and that the expansion joint does not absorb torque.
sum up
The above are some basic steps and precautions for proper installation of large tie rod expansion joints. It is important to follow the installation guidelines provided by the manufacturer and ensure that all steps are carried out exactly as required to ensure that Expansion Energy Saving works safely and effectively as far as the design allows. Please consult the manufacturer or professional technicians for any questions or special circumstances.