Aluminium Telescope Pole for Aluminum Alloy DSLR Camera Tripod

The sleeve expansion joint consists of an inner and outer sleeve that can move relative to each other in the axial direction. The inner and outer sleeves are sealed with a stuffing box. When in use, keep the two ends of the pipe moving on one axis.

Reasonable design of the supports in the pipeline system is a necessary condition to ensure the normal function of the aluminum tube expansion joint. Different types of aluminum tube expansion joints have different requirements for the supports of the pipe system.

Main fixed support

Main fixed support

The main fixed support is installed on the pipe system with one or more unconstrained aluminum tube expansion joints. It must withstand the force and torque applied to it by each pipe section connected to it. Such as the pressure thrust (blind plate force) generated by the medium pressure in the pipeline, the force and torque required for the expansion joint to produce the rated displacement, the friction generated by the adjustable guide support and the directional guide support, the weight of the pipeline and the medium, the fluid impact force, When using an unconstrained aluminum tube expansion joint, the main fixed support must be set in the following cases:

(1) Pipeline blind end

(2) Where the medium flow direction changes

(3) Pipeline branch

(4) Pipeline diameter change, The stop valve or pressure reducing valve on the pipeline between two aluminum tube expansion joints.

Secondary fixed support

The secondary fixed support is used to bear all loads except the pressure thrust.

For straight pipe sections, the secondary fixed support is usually used to divide the longer pipe section between the two fixed supports into several pipe section units, so that only one aluminum tube expansion joint is set between each pipe section to ensure that the expansion joint can work normally.