【摘要】：隨著固體推進劑含能水平的提高以及混合設備體積的增加，傳統(tǒng)混合工藝混合效果與混合效率的矛盾凸顯。連續(xù)混合工藝可以避免這一矛盾。而選擇合適的液體組分加料裝置是實現(xiàn)連續(xù)混合的關鍵。蠕動泵因具有剪切作用低、傳送精度高等優(yōu)點成為了加料裝置的一種選擇。 本文首先分析了蠕動泵的工作原理，對蠕動流做了簡要分析，建立了流動模型，使用N-S方程對流函數(shù)進行了推導，討論了影響蠕動泵流量的因素。 然后針對液體組分溫度敏感，沖擊敏感的特性和系統(tǒng)加料準確性的要求，采用計算機測控技術，設計了基于大流量蠕動泵的試驗系統(tǒng)。試驗系統(tǒng)的設計包括硬件和軟件兩個方面。硬件方面，，采用鉑電阻溫度傳感器、FlexiForce壓力傳感器，實現(xiàn)了溫度采集和壓力采集方案。解決了封閉結(jié)構(gòu)的泵頭內(nèi)壓力難以測量的問題。軟件方面，分析了LS-BUSASCⅡ通信協(xié)議并利用Labview虛擬儀器技術完成了系統(tǒng)控制程序的編寫。設計了溫度和壓力測量子VI并對傳感器的信號進行處理。設計了一種基于Flexi Force壓力傳感器輸出信號的蠕動泵輥子轉(zhuǎn)動計數(shù)器，實現(xiàn)了定轉(zhuǎn)數(shù)的蠕動泵自動控制。 最后對一種大流量的蠕動泵進行了試驗，獲得了該泵不同工況下關鍵部位溫度、泵管受壓狀態(tài)、轉(zhuǎn)速和泵管尺寸等因素對流量的影響等重要參數(shù)，可為定量加料裝置的運行參數(shù)制定提供參考。
[Abstract]:With the increase of solid propellant energy content and the increase of mixing equipment volume, the contradiction between mixing effect and mixing efficiency of traditional mixing process is obvious. Continuous mixing process can avoid this contradiction. The selection of suitable liquid component feeding device is the key to realize continuous mixing. Peristaltic pump has become a choice of feeding device because of its low shear effect and high transmission accuracy. In this paper, the working principle of peristaltic pump is analyzed, and the flow model is established. The convective function of Nus equation is used to deduce the flow rate of peristaltic pump, and the factors affecting the flow rate of peristaltic pump are discussed. Then, according to the characteristics of temperature sensitivity and shock sensitivity of liquid components and the requirement of feeding accuracy of the system, a test system based on large flow peristaltic pump is designed by means of computer measurement and control technology. The design of the test system includes hardware and software. In hardware, platinum resistance temperature sensor and FlexiForce pressure sensor are used to realize temperature acquisition and pressure acquisition. The problem that the pressure in the pump head of the closed structure is difficult to measure is solved. In the aspect of software, the communication protocol of LS-BUSASC 鈪

本文編號：2462444