Comparison of ultra-high-pressure water jet and conventional rotating blade cutting for the production of fresh-cut iceberg (Lactuca sativa L.) and endive (Cichorium endivia L.)

2016 ◽  
Vol 242 (12) ◽  
pp. 2071-2081 ◽  
Author(s):  
Florian Hägele ◽  
Simone Nübling ◽  
Ralf M. Schweiggert ◽  
Lena Nolte ◽  
Agnes Weiss ◽  
...  
Keyword(s):  
High Pressure ◽  
Lactuca Sativa ◽  
Ultra High Pressure ◽  
Rotating Blade ◽  
Lactuca Sativa L ◽  
Cichorium Endivia ◽  
Pressure Water ◽  
Fresh Cut ◽  
High Pressure Water Jet ◽  
Blade Cutting

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.

Research on Concrete Hydraulic Crushing Based on Five-Plunger Pump

2013 ◽  
Vol 756-759 ◽  
pp. 257-260 ◽  
Author(s):  
Y.M. Qi ◽  
Zhong Min Wang ◽  
S.P. Deng ◽  
Z.X. Meng ◽  
C.G. Wang
Keyword(s):  
High Pressure ◽  
Complex Environment ◽  
Thermal Aggregation ◽  
Dust Pollution ◽  
Plunger Pump ◽  
State Security ◽  
Ultra High Pressure ◽  
High Efficient ◽  
Pressure Water ◽  
High Pressure Water Jet

Concrete crushing of the municipal engineering by traditional broken tools has flaws of inefficient, high dust pollution, high noise, high labor intensity. Hydraulic crushing equipment with ultra-high pressure water jet is designed, which includes the ultra-high pressure five-plunger pump unit and its control system. Engineering applications show the equipment owns characteristics of high efficient, cold state, security, and cannot produce stratified thermal aggregation, heat-affected zone in concrete and dust pollution. Then qualities of concrete hydraulic crusher in a complex environment are improved effectively. It provides an effective method to solve the problems of concrete hydraulic crushing.

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
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