深海压力模拟试验装置的研究

发布时间：2018-07-12 14:20

本文选题：模拟装置 + 加压方案　；参考：《合肥工业大学》2015年硕士论文

【摘要】：随着海洋工程技术的快速发展,我国已从“浅蓝”迈向了“深蓝”。但由于深海环境具有复杂性和特殊性,难以身临其境地进行分析和研究,因此需要设计一套能够模拟深海环境的装置。基于此本文提出一种深海压力模拟试验装置用于对深海压力传感器的压力标定。本文针对试验装置的设计指标和控制特性要求,提出通过强制改变腔体内的液体体积以改变容器内部压力的加压方案,继而初步确定了模拟试验装置的总体构成以及精确控制进给量的控制方法；然后通过对主要组成部分(压力缸、螺栓、管路、电机)进行设计与计算,完成了深海压力模拟试验装置的整体设计；由于在给压力缸加压的过程中试验装置会产生相应地变形,而试验装置的变形会导致压力缸内的压力减小,此时利用ANSYS软件对压力缸、螺栓和管路进行静力学分析,得出了不同压力环境下试验装置的相关变形量；最后通过对试验装置变形量和液体压缩量的计算及相关公式的推导,得出了活塞进给量与压力缸内部的压力变化量的关系曲线。本课题研究的模拟装置通过对驱动系统实行闭环控制可以精确地控制进给量,从而达到高精度的模拟效果。试验装置包括两个进给系统,其中大活塞进给系统可以加压至目标压力值,小活塞进给系统可以高精度的改变压力缸内部的微小压力,其精度可达0.02%FS,故本装置可以实现微小压力的标定作用,为后续深海压力传感器的研究提供了良好的实验平台。
[Abstract]:With the rapid development of marine engineering technology, China has moved from "shallow blue" to "deep blue". However, because of the complexity and particularity of the deep-sea environment, it is difficult to analyze and study it. Therefore, it is necessary to design a set of devices to simulate the deep sea environment. Based on this paper, a kind of deep sea pressure simulation test device is put forward. Pressure calibration for deep sea pressure sensors.
In this paper, aiming at the design index and control characteristic requirements of the test device, the pressure scheme for changing the internal pressure of the container is proposed by forcing the volume of the liquid in the cavity to change the internal pressure of the container. Then, the overall composition of the simulation test device and the control method for the precise control of the feed are preliminarily determined. Then, the main components (pressure cylinder, screw) are introduced. The design and calculation are carried out to complete the overall design of the deep sea pressure simulation test device. Due to the deformation of the test device in the pressure cylinder of the pressure cylinder, the deformation of the test device will cause the pressure in the pressure cylinder to be reduced. At this time, the static force of the pressure cylinder, the bolt and the pipe will be static with the ANSYS software. According to the analysis, the relative deformation amount of the test device under different pressure conditions is obtained. Finally, the relation curve of the pressure variation in the piston feed and the pressure cylinder is obtained through the calculation of the deformation of the test device and the calculation of the liquid compression and the derivation of the related formulas.
Through closed loop control of the driving system, the simulation device can accurately control the feed and achieve high precision simulation effect. The experiment device includes two feed systems, in which the feed system of the large piston can be pressurized to the target pressure value, and the small piston feed system can change the internal micro of the pressure cylinder with high precision. The precision of small pressure is up to 0.02%FS, so this device can realize the calibration of small pressure. It provides a good experimental platform for the further study of deep sea pressure sensors.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P755.2

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