Metal flexible hoses and expansion joints
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This post was last edited by qq375170364 on 2009-6-17 14:18. What are the specific differences between optical corrugated hoses and corrugated expansion joints in metal flexible hoses? I think it’s easy to get confused about its uses. The installation of the compensating joint is also related to the flow direction of the medium, whereas the installation of the flexible hose is not related to the flow direction of the medium. Metal flexible hoses are available in the form with a swivel flange, while expansion joints do not have a swivel flange. For storage tanks that require weighing, all their pipe openings should be connected using metal flexible hoses, right? Generally, you connect the hose first, and then the valve! Additionally, compensator joints have tie rods, while flexible hoses do not have tie rods.
Metal hoses are used primarily due to process requirements; for example, they are employed in weighing systems, at the outlets of large storage tanks, or at the connections of tank trucks. The purpose is to ensure accurate weighing (in weighing systems), facilitate use (such as with tank trucks), or reduce interference between different systems. For instance, metal hoses are used at the outlets of large storage tanks to prevent the pipe openings from being damaged due to the sinking of the tank foundation. A bellows expansion joint is a flexible design for metal pipes, intended to compensate for the thermal expansion (or contraction) that occurs in pipes due to temperature changes – in other words, the linear expansion of metal pipes. It is generally possible to determine how many straight sections of pipe require a bellows expansion joint by considering the temperature of the fluid flowing through the pipes.
The storage tank outlet should be equipped with a valve first and then a hose, to facilitate the replacement and maintenance of the metal hose.
Metal hoses are mainly used for radial displacement, while bellows are mainly used for axial displacement.
Which one has a higher operating temperature, the metal hose or the corrugated expansion joint? Also, their material choices are different, right? This mainly depends on the operating environment
Generally, it is possible to calculate how many straight sections of pipe require the installation of a bellows compensator based on the temperature of the fluid in the pipe. How is this calculated?
Metal hoses belong to universal compensation joints; they can compensate for deformations in any direction and effectively eliminate the transmission of vibrations； Bellows generally have guide rods and limit nuts, which are used only to compensate for axial displacement, with a limited amount of compensation allowed.
Can some metal hoses be used at 400°?