Underwater constant pressure difference gas source

Abstract

The invention relates to an underwater constant pressure difference gas source comprising a gas storage cylinder and an underwater constant pressure gas source adjuster. The underwater constant pressure gas source adjuster is provided with a piston cylinder, the inner cavity of the piston cylinder is separated to a compression cavity and a liquid inlet cavity by a piston, a gas inflation rubber leather bladder is arranged in the compression cavity, a piston initial pressure adjusting component is arranged in the liquid inlet cavity, the gas inflation rubber leather bladder is provided with a gas inflation interface and a gas outlet pipe, and the gas outlet pipe of the gas inflation rubber leather bladder is connected with the gas storage cylinder. Constant pressure difference control between stored gas and surrounding liquid is realized by utilizing feedback movement process of compressing or expanding the piston directly by environmental liquid in the depth changing process so as to avoid the situation that output force of an underwater pneumatic executive component changes along with water depth and avoid structural damage or damage of a sealing element of a sealing container caused by inside and outside pressure difference fundamentally. Output parameters of the underwater pneumatic executive component in the atmospheric environment can be realized, and the underwater constant pressure difference gas source can be also used for constant pressure difference control of inside and outside environment of an underwater sealing body.

Description

technical field [0001] The invention relates to a marine engineering technology, in particular to an underwater constant pressure difference gas source. Background technique [0002] Pneumatic transmission technology plays an important role in many application fields where the atmosphere is the environment. Unfortunately, this technology with many characteristics cannot be directly applied to the underwater environment. The main reason is that the underwater pressure is proportional to its depth, which means that if you want to achieve underwater aerodynamics, you must first Solve the problem of the influence of underwater pressure on the output parameters of the actuator and the source of compressed air. In addition, as the depth of diving activities increases, higher requirements are placed on the reliability of the dynamic and static seals of the sealing body of diving equipment. [0003] In the prior art, when the equipment with pneumatic actuators is diving, the liquid...

AI Technical Summary

Problems solved by technology

If the constant pressure air source is not used, the output force of the pneumatic actuator will be reduced accordingly, and even zero or negative output force may appear; container equipment with mechanical static or dynamic seals, such as underwater camera lens sealing cover, etc. As the diving depth of the equipment increases, the pressure of the equipment environment also increases, resulting in a large internal and external pressure difference between the interior of the equipment and the ambient liquid. Excessive pressure difference may cause damage to the mechanical structure of the sealed container or may cause static or dynamic sealing. component damage

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