Directly buried sleeve compensator

The direct buried sleeve compensator compensates for thermal expansion by sliding the outer sleeve through the sliding motion of the sliding sleeve. It is a compensation device for thermal fluid pipelines and is mainly used as an auxiliary equipment for straight pipelines. It can also be directly buried underground and can be installed without a maintenance well. The project cost is low

The direct buried sleeve compensator is suitable for hot water, steam, and grease media, and has no requirements for chloride ion content. It is particularly suitable for systems with excessive chloride ions in the media or surrounding environment. It is also suitable for media engineering pressures ≤ 2.5MPa and media temperatures ranging from -40 ℃ to 600 ℃.

Directly buried sleeve compensators are divided into unidirectional and bidirectional compensation structures. The bidirectional type is characterized by the sliding sleeves at both ends of the compensator always sliding freely regardless of which end the medium flows into, achieving bidirectional compensation and increasing the compensation amount.

The direct buried sleeve compensator adopts a new type of sealing material flexible graphite ring, which has the characteristics of high strength, low friction coefficient (0.04~0.10), no aging, good effect, and easy maintenance.

The service life of directly buried sleeve compensators is long, and their fatigue life is equivalent to that of pipelines. The sliding surface has been treated and has good performance in environments such as salt water and salt solutions, which is more than 50 times higher than austenitic stainless steel. At the same time, if the sealing effect is weakened due to wear and tear, the flange can be tightened again to enhance the sealing performance. Alternatively, the bolt can be loosened, the pressure ring can be removed, and one or two layers of sealing rings can be installed to tighten the pressure ring and continue to use.