The Efficiency Analysis And Study Of Deep-Sea Hydraulic Power Source

With the continued development of deep-sea development, deep-sea hydraulic power source as deep-sea equipment on the basis of power equipment, has become increasingly important and boom. Given the special deep-sea environment, as well as deep-sea hydraulic power source of the inherent high power density, is widely used in the development of the deep sea. Hydraulic after rough type development, now the study of hydraulic toward miniaturization, intensive and efficient, deep-sea hydraulic power source as a hydraulic power source, is also the common fault of the hydraulic system, the efficiency problem. With the state advocates green development and the sustainable development of the slogan, analyze the efficiency of the power supply problem becomes more meaningful.The efficiency of deep-sea hydraulic power source as the research object, from the structure of the deep-sea hydraulic power source of clarifying the power transformation and transmission line, and application of theory and numerical simulation analysis of the key parts of the power loss.First of all, this paper introduces the research status of the deep-sea hydraulic power source and its efficiency. Analysis of the structure of deep-sea hydraulic power structure, figure out its power transmission line, the loss of efficiency is mainly in the two parts of the deep sea electric motor and hydraulic pump. So analysis the efficiency characteristics of the deep-sea motor and hydraulic pump (internal and external gear pump), Deep sea motors different from the ordinary ground motor oil the biggest difference is the presence of friction loss, and the oil friction loss of 11kw deep-sea DC motor is calculated by numerical simulation. The mechanical loss of the hydraulic pump is mainly lies in the existence of oil viscous friction loss. Sum up, oil viscosity is an important factor affecting the efficiency of deep-sea hydraulic power source.Secondly, combining with Solidworks modeling and Pumplinx numerical simulation on the internal gear pump of deep-sea hydraulic power source for a 2000 m,3000 m and 4000 m of the simulation analysis. For comparison at the same time, a similar displacement external gear are simulated under the same environmental conditions.The results showed that the DTE21 (10#) hydraulic oil is suitable for high pressure deep cryogenic environment, and external gear pump because of trapped-oil, its power loss is higher than the internal gear pump, show that the environment internal gear is better than that of external gear in terms of efficiency.Again, deep-sea hydraulic power source efficiency optimization to do exploratory research. By simulation analysis of deep-sea 4000m, the case of deep-sea hydraulic power source of the hydraulic pump ground application system commonly DTE25 (46#) hydraulic oil, the results showed that its power loss of about DTE21 (10#) of 2.2 times, indicating 46# hydraulic oil discomfort at 4000m deep-sea hydraulic power source.In addition, from the hydraulic system, analysis of the energy saving effect of the accumulator in the deep sea hydraulic power source system by AMEsim, the results show that:when the system starts with load, has accumulator hydraulic system can effectively absorb the overflow losses.Finally, through three series of deep-sea hydraulic power source to test the efficiency of research and found that deep-sea hydraulic power source load rate of less than 0.4, the overall efficiency is low, because of the deep sea three motor system at low load, the motor resulting in low power factor.In addition, stand-alone volumetric efficiency and volumetric efficiency of the hydraulic pump was close, indicating that the integrated structure of deep-sea hydraulic power source is reasonable.