RATIONALIZATION OF THE UNIT FOR DIAGNOSING THE FLOW RATE OF HYDRAULIC EQUIPMENT FOR MOBILE MACHINES

2020 ◽  
Author(s):  
A.N. Sirotenko ◽  
◽  
S.A. Partko
Keyword(s):  
Flow Rate ◽  
Strength Analysis ◽  
Sensor Design ◽  
Flow Meter ◽  
Threaded Connection ◽  
Hydraulic Equipment ◽  
Mobile Machine

The article presents a strength analysis of the flowmeter design used in the diagnostics nodes of mobile machine hydraulic units. The connection of the flow meter housing with the bracket has been simplified and adapted for a more robust sensor design, taking into account the strength and tightness of the threaded connection. The tightness of the applied sealing method is confirmed by the analysis of the stressstrain state of the connection parts and confirmed practically.

Research on the Vortex Mass Flow Meter of Dual Bluff Body Based on Differential Pressure Principle

2013 ◽  
Vol 401-403 ◽  
pp. 1110-1113
Author(s):  
Quan Sheng Duan ◽  
Li Cui Wang
Keyword(s):  
Lower Limit ◽  
Mass Flow ◽  
Flow Rate ◽  
Bluff Body ◽  
Differential Pressure ◽  
Low Flow ◽  
Body Structure ◽  
Measurement Sensitivity ◽  
Flow Meter ◽  
Pressure Signal

The lower limit of the existing vortex mass flow meter based on differential pressure is high. So the application of the existing vortex mass flow meter is limited in the measurement for low flow rate. This paper proposes a method using vortex mass flow meter of dual bluff body based on differential pressure principle. The differential pressure signal between the upstream and downstream can be amplified by the vortex overlap caused by the dual bluff body structure. The results of the simulation by Fluent show that this method can reduce the lower limit of measurement, and improve the measurement sensitivity effectively.

Sequential Control of Multichannel On–Off Valves for Linear Flow Characteristics Via Averaging Pulse Width Modulation Without Flow Meter: An Application for Pneumatic Valves

2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Kanchit Pawananont ◽  
Thananchai Leephakpreeda
Keyword(s):  
Flow Rate ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Single Channel ◽  
Flow Characteristics ◽  
Volumetric Flow Rate ◽  
Operating Conditions ◽  
Mean Flow ◽  
Flow Meter ◽  
Linear Flow

Control of on–off valves for linear flow characteristics is a challenging design problem due to nonlinearity of valve mechanism and fluidic properties under various operating conditions. In this study, averaging pulse width modulation (PWM) is proposed as a control valve signal by implementing PWM with predetermined duty period so that overflow at the open position and underflow at the closed position are divided proportionately around desired mean flow rates during entire cycle periods. Multichannels in a parallel pattern are implemented to yield linear flow characteristics with higher resolution than a single channel. With pressure and temperature measurements, the volumetric flow rate is determined by an empirical model of flow characteristics across flow control valves at given operating conditions. The experimental results on achieving the desired volumetric flow rate of air under actual flow conditions without a flow meter are presented for viability of the proposed methodology in practical uses.

G050035 Development of Flow Meter Calibration Facility at High-Pressure and High-Flow-Rate for Hydrogen Station

2012 ◽  
Vol 2012 (0) ◽  
pp. _G050035-1-_G050035-3
Author(s):  
Toshihiro MORIOKA ◽  
Masaru ITO ◽  
Shizuichi FUJIKAWA ◽  
Masahiro ISHIBASHI
Keyword(s):  
High Pressure ◽  
Flow Rate ◽  
High Flow ◽  
High Flow Rate ◽  
Flow Meter ◽  
Calibration Facility ◽  
Hydrogen Station

Aluminum Catenary Production Riser: Design, Testing Results, Ways to Improvement

2012 ◽  
Author(s):  
Vadim Tikhonov ◽  
Mikhail Gelfgat ◽  
Rudolf Alikin ◽  
Valery Chizhikov ◽  
Valery Shaposhnikov ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Small Samples ◽  
Strength Analysis ◽  
Pipe Material ◽  
Steel Catenary Riser ◽  
Threaded Connection ◽  
Alternative Materials ◽  
Offshore Oil Production ◽  
Welded Connection ◽  
Offshore Oil

One of the widely used systems for offshore oil production in water depths up to 500–2500 meters is a steel catenary riser (SCR). Requirements for long-term corrosion resistance of SCR are very stringent, that obliges to manufacture it from expensive steels. Still, the increased water depth leads to increased riser tension, grown pressure, aggravated buckling and oscillation problems. Among alternative materials to manufacture catenary risers, i.e., steel, titanium and aluminum alloys, the aluminum is the best from the “Strength/Weight/Cost” aspects with its high corrosion strength. Design of an aluminum catenary production riser (ACPR) was developed in Russia; and comprehensive tests were performed on mechanical characteristics and corrosion resistance properties of ACPR tubes and their connections. Two possible connections of riser sections were considered, i.e., welded and threaded. Strength analysis of threaded connection was performed by FEM. Mechanical testing included: testing of small samples of pipe material and welded connection cut out of riser section, testing of full-scale specimens of connection prototypes, and measurement of residual stresses. Structural and corrosion tests of samples consist of investigation of standard metallographic characteristics of pipe material and welded connection, and assessment of effects of different types of corrosion in seawater and oil fluid. The results of performed work have led to the conclusion that welded connection is most prospective for ACPR manufacturing. At the same time, the testing revealed certain improvements need to be done in the course of further work on this project.

scholarly journals Peak Flow Meter with Measurement Analysis

2020 ◽  
Vol 2 (3) ◽  
pp. 107-112
Author(s):  
Anisa Anisa ◽  
Torib Hamzah ◽  
Muhammad Ridha Mak'ruf
Keyword(s):  
Data Storage ◽  
Flow Rate ◽  
Peak Flow ◽  
Measurement Data ◽  
Warning Signs ◽  
Peak Flow Rate ◽  
Flow Meter ◽  
Economic Method ◽  
Inspection Process ◽  
Sd Card

The Peak flow meter is a device used to measure the amount of airflow in the human airway or often referred to as PFR (Peak Flow Rate). Peak Flow Rate (PFR) measurement is a simple and reliable way to detect airway obstruction. PFR measurement is a simple, non-invasive, fast and economic method to assess the strength and speed of expiration in L / min, through maximum expiration of capacity total lung. The results of peak flow data can illustrate early warning signs for an illness that in some cases may show a decrease in lung function 1-3 days before other respiratory symptoms become apparent. This module is designed using MPX5100GP sensor. This sensor has a pressure range of 0-100 Kpa. The Nature module is also equipped with data storage facilities using an SD Card so that the measurement data can be processed using Ms. Excel to find out graph data for further diagnostic purposes. The inspection results can be directly viewed on the display and also automatically stored in the SD Card storage that has been available. This module has the highest error rate of 4.41% and the lowest error value of 0.42% compared to the original device. From the data collection that has been done, it can be concluded that this module can be used for the inspection process.

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