Sleeve compensator, also known as tube expansion joint and pipe expander, is a compensation device for thermal fluid pipeline, mainly used for auxiliary installation of linear pipeline. Suitable for hot water, steam, grease media, through the sliding sleeve to the outer sleeve of the slip movement, to achieve the compensation of thermal expansion. Sleeve compensator consists of outer and inner cylinder, the flange piece of the outer and inner cylinder is equipped with a limit rod, the inner wall of the outer cylinder is equipped with a limit block, and the outer and inner cylinder is sealed by V-shaped rubber ring. It solves the shortcomings of the existing filler friction of the expander, easy to leak, difficult to process and easy to drag out, and has the advantages of reliable sealing, small friction, small volume, light weight and anti-pull out. Main advantages. The service life of sleeve compensator is large and the fatigue life is comparable to that of pipeline. The sliding surface is specially treated and has good corrosion resistance in salt water, salt solution and other environments, more than 50 times higher than stainless steel. At the same time, after many years due to wear and tear resulting in a weakening of the sealing effect, you can tighten the flange again to enhance the sealing performance, you can also loosen the bolt, remove the pressure ring, and then put in a layer or two sealing ring, press the pressure ring, and continue to use. Sleeve compensator has no requirement for chloride ion content, especially suitable for the media or the surrounding environment chloride ion exceeds the standard on the system. Sleeve compensator is divided into one-way type and two-way type compensation structure, two-way type is characterized by regardless of the medium from the compensator where the inflow, the compensator ends of the sliding sleeve is always free to slide, to achieve two-way compensation effect, the compensation amount will become larger. Directly buried type sleeve compensator can be buried in the ground, installation can not set up maintenance wells, low engineering costs.
