Development of a single-shot linear actuator for a deep-sea sampling valve

摘要

In this article, a new kind of linear actuator for the deep-sea sampling valve has been described. Based on the working principle of the triggering ring, the actuator employs a preloaded spring to generate an output force and linear movement. The actuator is designed to be used 4000m underwater and can produce a force of 510N at the maximal output displacement of 3.5 mm, which can be easily modified by changing the preloaded spring and spring seats. The actuator has been successfully tested to actuate the sampling valve at an ambient pressure of 40 MPa.