scholarly journals A STUDY ON ULTRA-HIGH PRESSURE WATER JET WALL CLIMBING ROBOT FOR REMOVAL RUST IN VESSELS

2008 ◽  
Vol 2008 (7-2) ◽  
pp. 403-406 ◽  
Author(s):  
Xingru WANG ◽  
Yongjun GONG ◽  
Zhengyao YI ◽  
Zuwen WANG
Keyword(s):  
High Pressure ◽  
Water Jet ◽  
Climbing Robot ◽  
Ultra High Pressure ◽  
Pressure Water ◽  
High Pressure Water Jet

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
Keyword(s):  
High Pressure ◽  
Control System ◽  
Water Jet ◽  
Ultra High Pressure ◽  
Plc Control ◽  
Pressure Water ◽  
High Pressure Water Jet ◽  
Hardware Circuit ◽  
Ship Repair ◽  
Removal Equipment

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.

Hardware Technology Research on Ultra-High Pressure Water Jet Ship Rust Control System Based on PLC

2013 ◽  
Vol 365-366 ◽  
pp. 812-816
Author(s):  
Ling Sun ◽  
Yong Jun Gong ◽  
Zeng Meng Zhang ◽  
Zu Wen Wang
Keyword(s):  
High Pressure ◽  
Control System ◽  
Frequency Control ◽  
Water Jet ◽  
Ultra High Pressure ◽  
Frequency Control System ◽  
Pressure Water ◽  
High Pressure Water Jet ◽  
And Control ◽  
Removal Technique

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.

Cavitation desulfurization in vulcanized rubber recycling under ultra-high pressure water jet

2017 ◽  
Vol 37 (5) ◽  
pp. 529-536
Author(s):  
Shouxu Song ◽  
Hui Zha ◽  
Haihong Huang
Keyword(s):  
High Pressure ◽  
Water Jet ◽  
Bubble Collapse ◽  
Infrared Spectrometry ◽  
Rubber Powder ◽  
Ultra High Pressure ◽  
Vulcanized Rubber ◽  
Gel Fraction ◽  
Pressure Water ◽  
High Pressure Water Jet

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.

Mechanism and experimental investigation of ultra high pressure water jet on rubber cutting

2014 ◽  
Vol 15 (9) ◽  
pp. 1973-1978 ◽  
Author(s):  
Yi Hu ◽  
Yong Kang ◽  
Xiao-Chuan Wang ◽  
Xiao-Hong Li ◽  
Xin-Ping Long ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
High Pressure ◽  
Water Jet ◽  
Ultra High Pressure ◽  
Pressure Water ◽  
High Pressure Water Jet

scholarly journals Influence of Processing Parameters on Coating Removal for High Pressure Water Jet Technology Based on Wall-Climbing Robot

2020 ◽  
Vol 10 (5) ◽  
pp. 1862 ◽  
Author(s):  
Feifei Zhang ◽  
Xuerong Sun ◽  
Zhanpeng Li ◽  
Imran Mohsin ◽  
Yanan Wei ◽  
...  
Keyword(s):  
High Pressure ◽  
Processing Parameters ◽  
Water Jet ◽  
Climbing Robot ◽  
Shipbuilding Industry ◽  
Technical Problems ◽  
Sand Blasting ◽  
Pressure Water ◽  
Coating Removal ◽  
High Pressure Water Jet

The shipbuilding industry is very important for many countries. As an essential process in the shipbuilding industry, surface preparation (or coating removal) is gaining more and more attention. The traditional process used for ship hull coating removal is a sand-blasting process, which is harmful to the environment and inefficient. Recently, high pressure water jet technology has been developed to replace the traditional sand-blasting process. However, there are still many technical problems to be solved. In this paper, one wall-climbing robot was developed to remove coating based on high pressure water jet technology. Coating removal experiments under various experimental conditions were carried out and the corresponding coating removal rate for each case was obtained and compared. In addition, numerical simulation based on Fluid software was conducted to observe the water jet process more visually. Results show that the processing parameters, including the water pressure, travelling speed, inclined angle, and stand-off distance, can greatly influence the coating removal effect. The optimal processing parameters are obtained to guide the application of the high pressure water jet technology based on the designed wall-climbing robot for the shipbuilding industry.

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