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Hydropneumatic refers to the pneumatic (gas) and hydraulic (water) components needed for operation of the devices. Hydropneumatic accumulators or pulsation dampeners are devices which prevent, but do not absorb, alleviate, arrest, attenuate, or suppress a shock that already exists, meaning that these devices prevent the creation of a shock wave ...
Diagram of recoil mechanism, British 60-pounder gun Mk.I, 1916 The idea of using a water brake to counteract the recoil of naval cannons was first suggested to the British Admiralty by Carl Wilhelm Siemens in early 1870s, but it took about a decade for other people (primarily Josiah Vavasseur) to commercialize the idea.
Hydropneumatic suspension is a type of motor vehicle suspension system, invented by Paul Magès, produced by Citroën, and fitted to Citroën cars.The suspension was referred to as Suspension oléopneumatique [] in early literature, pointing to oil and air as its main components.
A hydropneumatic device similar in principle to a shock absorber called a 'Water Hammer Arrestor' can be installed between the water pipe and the machine, to absorb the shock and stop the banging. Air valves often remediate low pressures at high points in the pipeline. Though effective, sometimes large numbers of air valves need be installed.
A guideline tensioner is a hydropneumatic device used on an offshore drilling rig that keeps a positive pulling force on the guidelines from the platform to a template on the seabed. Overhead electrical wires may be kept in tension by springs or weights. Conveyor belts; Chair lift and gondola lift cables
For very large forces (dozens to hundreds of tonnes), the springs are implemented as gas springs: hydropneumatic devices — a plunger cylinder buffered by a volume of gas. Examples of heave compensators include: Drill string compensators; Riser tensioners; Conductor tensioners; Guideline tensioners
A guideline tensioner is a hydropneumatic device used on an offshore drilling rig that keeps a positive pulling force on the guidelines from the platform to a template on the seabed. [1] The guidelines act as a guidance for equipment and tools that must be lowered to the template.
Paul Ernest Mary Magès (1908–1999) is known for his invention of the first self-leveling automobile suspension, known as hydro-pneumatic suspension.This system replaced conventional steel springs with an adaptive system of hydraulic struts, resulting in a motoring experience that felt like no other automobile of the era.