IGNITION OF HYDRAULIC FLUIDS IN HIGH PRESSURE PIPE SYSTEMS

1962 ◽  
Author(s):  
G. M. Faeth
Keyword(s):  
High Pressure ◽  
Pressure Pipe ◽  
Hydraulic Fluids ◽  
Pipe Systems

scholarly journals Optimizing Signal De-Noising Algorithm for Acoustic Emission Leakage of Wavelet

2016 ◽  
Vol 16 (1) ◽  
pp. 116-125 ◽  
Author(s):  
Xin-Hua Wang ◽  
Yu-Lin Jiao ◽  
Yong-Chao Niu ◽  
Jie Yang
Keyword(s):  
High Pressure ◽  
Detection System ◽  
Minimum Mean Square Error ◽  
Weight Coefficient ◽  
Wavelet Denoising ◽  
Denoising Method ◽  
Adaptive Wavelet ◽  
Pressure Pipe ◽  
Optimal Linear ◽  
Mean Square Error Criterion

Abstract Traditional wavelet denoising method cannot eliminate complex high-pressure pipe signals effectively. In the updated wavelet adaptive algorithm, this thesis defines the constraints in order to reconstruct the signals accurately. According to the minimum mean square error criterion, the results predict the weight coefficient and get the optimal linear predictive value. Adopting the improved algorithm under the same condition, this thesis concluded that Db6 increased the complexity of wavelet algorithm by 50% by comparative experiments. It will be more conducive to the realization of hardware and the feasibility of real-time denoising. Dual adaptive wavelet denoising method improved SNR by 50%. This denoising method will play a key role in the detection rate of high-pressure pipe in the online leakage detection system.

The Stress Analysis of New Pressure Piping Model

2011 ◽  
Vol 474-476 ◽  
pp. 1215-1220
Author(s):  
Bin Wang ◽  
Cai Liu ◽  
Xue Li Wu ◽  
Xue Fei Qiao
Keyword(s):  
High Pressure ◽  
Load Capacity ◽  
Compressive Load ◽  
Theoretical Formula ◽  
Pressure Pipe ◽  
Unit Design ◽  
Pressure Pipeline ◽  
New Type ◽  
Pressure Unit ◽  
Development Tendency

High-pressure becomes the high pressure unit design main consideration factor to compressive load capacity, security, efficiency, economic and manufacturing process of high-pressure equipment. This article proposes a new pressure piping according to the current high-voltage device development tendency and the future requirement. This new type of pressure pipe can be simplified for pipe casing model. Firstly we establish single, double and multilayer pressure piping model. We push out the multilayer pressure pipe stress formula according to stress situation of the analysis of the knowledge of mechanics of each model. We get this pressure piping withstand by the most intrinsic pressure enhance obviously under each layer within the radius of the cylinder reach the initial limitation of materials and other parameters of model are same through the comparison of the theoretical formula calculation with other general. Pressure pipeline calculated value. The multi-layer pressure piping system's circum radius are smaller than other piping with other pressure piping withstand the same most intrinsic pressure and the most interior radius are the same situation.

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