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How to solve the axial instability of sleeve compensator

Time: 04-22 󰃯 Reading times: 480 󰃳 Editor in charge: The sea 󰃗 Column: product focus

Introduction: In order to deal with the axial instability of sleeve compensator, people need to consider from its layout and setting position. The more important thing is the characteristics and quality of sleeve compensator itself. The characteristics and quality requirements of sleeve compensator only arranged on the fixed support side should be higher

To handle the sleeve Compensator The axial instability problem needs to be considered from its layout and setting position. The more important thing is the characteristics and quality of sleeve compensator. The sleeve compensator only arranged on the fixed support side should have higher characteristics and quality requirements, and the pipeline section distance should be smaller. When selecting the type, the sleeve compensator with strong instability resistance must be selected according to the design and layout According to the specific situation of the project, the basic principle is flexible treatment. The practice has proved that the sleeve compensator can be set at any part of the two fixed supports if the guiding structure is well controlled, whether the pipe trench is overhead or directly buried.
The sleeve compensator shall meet the welding requirements of the acceptance standard: due to the use of origin designated welding, in order to avoid welding deformation, reasonable assembly, reasonable welding, rigid reinforcement and other methods shall be adopted to achieve or reduce the welding deformation, so as to meet the requirements of the acceptance standard.
According to the requirements of weld forming, the weld seam is too smooth, the height and width are uniform, the joint is good, the weld size stagger is less than 0.5mm, the surface is free of air hole, slag inclusion, arc pit, crack, etc., and it is tight without leakage. All of them meet the requirements of installation and inspection standards
1. Inspection of inner surface misalignment of wallboard shall not be greater than 1mm, straightness tolerance shall be ≤ 0.5l/1000mm, and large welding shall not be greater than 8m
2. The weld surface shall be flat and even without cracks, pores, weld beading, slag inclusion, arc pit and other defects, and the weld joint and base metal shall be smooth and well formed;
3. False welding slag is forbidden to be added to the welding seam, and the false welding seam shall not be allowed to be completely smooth.
The service life of sleeve compensator is long and its fatigue life is equivalent to that of pipeline. After special treatment, the sliding surface has good corrosion resistance in salt water and salt solution, which is more than 50 times higher than that of austenitic stainless steel. In addition, when the sealing effect is weakened due to damage for many years, the flange can be tightened again to improve the sealing performance. The compensator can also loosen the bolts, take down the pressure ring, and then put one or two layers of sealing ring to clamp the pressure ring and apply again.
The sleeve compensator has no regulation on the chlorine ion composition, which is very suitable for the system with medium or surrounding environment exceeding the standard.