Software Technology Research on Control System of Ultra High Pressure Water Jet Rust Removal Equipment

2013 ◽  
Vol 721 ◽  
pp. 372-376 ◽  
Author(s):  
Ling Sun ◽  
Yong Jun Gong ◽  
Zeng Meng Zhang ◽  
Zu Wen Wang

Ship rust removal is an import part of ship-repair and shipbuilding process. Using high pressure water jet equipment causes no environmental pollution. The control and detection of high pressure water jet equipment is the key technology to ensure the system works properly. This study, in light of research on software programming of control system of ultra high pressure water jet ship rust removal equipment, establishes a control system based on PLC through the analysis of the structure and principles of the ultra-high pressure water jet equipment. On the basis of designing hardware circuit of PLC control system, this study mostly analyses software program, and experimental test suggests that the software programming can meet the requirements of system security.

2013 ◽  
Vol 365-366 ◽  
pp. 812-816
Author(s):  
Ling Sun ◽  
Yong Jun Gong ◽  
Zeng Meng Zhang ◽  
Zu Wen Wang

Ultra-high pressure water jet ship rust is one development direction of ship rust removal technique. In order to ensure the normal working of the system, how to control each equipment is the key-part of the design. This study presents the analytical research on hardware technology of the control system of ultra-high pressure water jet ship rust system, the analysis of the principle of frequency control system and circuit design and control circuit of PLC, by analysis the structure and principles of ultra-high pressure water jet rust, and then demonstrates through experimental test that the hardware electronic circuit works properly.


2017 ◽  
Vol 37 (5) ◽  
pp. 529-536
Author(s):  
Shouxu Song ◽  
Hui Zha ◽  
Haihong Huang

Abstract Ultra-high pressure water jet is proposed for recycling of vulcanized waste rubber, and cavitation desulfurization in the recycling process is analyzed. The chemical effects of mechanical shearing, pyrolysis, free radical oxidation, and supercritical oxidation produced by bubble collapse are considered the main causes of desulfurization. Scanning electron microscopy, Fourier transform infrared spectrometry, differential scanning calorimetry, nuclear magnetic resonance test, and X-ray photoelectron spectroscopy are used to determine the performance of rubber powder. Gel fraction of rubber powder is measured to analyze the effect of jet pressure on desulfurization. Results indicate that the vulcanized rubber could achieve partial desulfurization. The glass transition temperature of the rubber powder slightly increases after crushing. With the increase of jet pressure, the gel fraction of rubber powder initially decreases and then increases, as well as achieves a minimum value at the jet pressure of nearly 220 MPa, which is ideal for desulfurization.


2014 ◽  
Vol 15 (9) ◽  
pp. 1973-1978 ◽  
Author(s):  
Yi Hu ◽  
Yong Kang ◽  
Xiao-Chuan Wang ◽  
Xiao-Hong Li ◽  
Xin-Ping Long ◽  
...  

2013 ◽  
Vol 860-863 ◽  
pp. 1495-1498
Author(s):  
Chen Gong ◽  
Min Guan Yang

In order to realize the stability-control of ultra-high pressure water jet, its kinetic characteristic should be unfolded firstly. This study measured the fluidic beam concentration (FBC) of jets discharged from six nozzles of different configurations. We also discuss flow physicals governing FBC with the help from a preliminary numerical simulation. Jet interface, the boundary line between jet and still air is like a long stepped line in the upstream, and turned to linear variation in the midstream and downstream. The characteristic of the jet can be controlled by the configuration of the nozzle exit effectively. Compared simulation results with experimental data, the conclusion can be drawn that the configurations of the nozzles have a significant influence on the vortexes which can decide the FBC.


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