Novel high pressure-resistant maintenance-free rotary compensator

Abstract

The invention discloses a novel high pressure-resistant maintenance-free rotary compensator, which belongs to the technical field of thermodynamic piping compensators. The rotary compensator comprises an inner rotatable pipe (1), an outer sealing sleeve (2), a structural pipe flange (7), a structural pipe (9), flexible graphite packing (10), a U-shaped seal ring (11), an inner rotatable pipe boss (12), a graphite seal ring (14), an outer sealing sleeve base (15) and the like. The outer sealing sleeve (2) is sleeved on the outer circular surface of the inner rotatable pipe (1), and the inner rotatable pipe boss (12) is arranged on the inner rotatable pipe (1); the graphite seal ring (14) is arranged between the inner end surface of the outer sealing sleeve base (15) and the inner rotatable pipe boss (12); the U-shaped opening of the U-shaped seal ring (11) faces the port of the joint between the inner rotatable pipe (1) and the structural pipe (9), and the U-shaped seal ring (11) is embedded into the flexible graphite packing (10); and the structural pipe flange (7) is integrated with the structural pipe (9), which is an integrated straight pipe section. Since the structure is adopted, the quality of the connecting welds of a piping can be conveniently detected, and the rotary compensator is characterized by high precision, low friction coefficient, low torque, high bending resistance, high pressure-bearing capability, reliable sealing, little pressure loss, unlimited medium flow direction, excellent performance, safe and reliable piping operation and sealing material replaceability.

Description

technical field [0001] The invention relates to a novel high-pressure resistant and maintenance-free rotary compensator, which belongs to the technical field of thermal pipeline compensation devices, and specifically belongs to the technical field of thermal pipeline compensation device structures used in industries such as petroleum, chemical industry, light industry, thermal power, and metallurgy. Background technique [0002] Due to the temperature change of the transmission medium, the thermal pipeline will inevitably cause thermal expansion and contraction of the pipeline, and the expansion and contraction deformation of the pipeline will appear in the form of axial thrust or axial displacement that is not conducive to the safe operation of the pipeline. Under normal circumstances, pipeline compensation devices are installed in thermal pipelines to absorb or compensate pipeline deformation. Pipeline compensators in the prior art have various structural forms, all of whi...

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Problems solved by technology

In order to solve the problems existing in the existing rotary compensators on the market, such as inaccurate axis centering, excessive self-torque, excessive friction coefficient, single sealing form, restricted medium flow direction, increased pressure loss caused by the structure, etc., and at the same time eliminate internal The direct impact of the pressure on the sealing packing, the purpose of improving the durability of the sealing material

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