Research Of Key Components Of Deep-Sea Hydraulic Power Source

More than seventy percent of the world is covered by sea. With the rapid development of the global economy, the demand for the resources is growing quickly. But the coal, oil, natural gas and other energy in the land has been almost used up, which cause people turn the eyes to the sea. It was estimated that near 37.9 billion tons of oil and 39 trillion cubic meters of natural gas is under the continental shelf. It is account for about a third of oil and gas reserves is under sea. Therefore, exploring the ocean is urgency for the world all countries.This paper is based on the deep-sea hydraulic power souse. The power souse is installed in deep-sea detector and provide power for it. The research will focus on its structure and transmission system of the power souse. To the structure, based on the concept of integrated design, hydraulic pump is installed directly into the fuel tank. The compensator’s piston is positioning in the inner wall of fuel tank. The motor and the hydraulic pump has common end cover. To the transmission system, in order to save space, the connection between motor and hydraulic pump does not use coupling but the way of processing external splines on the shaft of hydraulic pump and processing internal splines on the shaft of motor. Then from the point of contact strength, the alignment and misalignment transmission is researched. By this analysis, the stress distribution of the interface can be got.This paper mainly includes the following three parts:1. Compared with the related research of deep-sea equipment at home and abroad, introduced the structure of deep-sea hydraulic power souse (hereinafter referred to as the power souse), including compensator, hydraulic pump and motor, and then, the compensation volume of compensator, the flow of hydraulic pump and the power of motor will be checked. Taking the 6kW series power source as an example, introduced the selection of the involute spline connection and its theory stress checking.2. In the situation of alignment transmission, the involute spline’s distribution of contact stress, friction shear stress, normal penetration distance and tangential slip distribution is shown. After this, the research will focus on the impact of axial contact length, normal stiffness coefficient and tangential friction coefficient on the transmission characteristics of spline, and give the best axial contact length as well as the range of stiffness coefficient and friction coefficient.3. In the situation of misalignment transmission, the influence the parallel misalignment transmission and angle misalignment transmission had on transmission characteristics of spline is gotten. The misalignment size which can effectively control the stress of spline is obtained, providing the reference for power souse when a deficiency happened.