scholarly journals An experimental research on water-based hydraulic fluid. (Characteristics of a fixed-delivery vane pump)

1985 ◽  
Vol 16 (1) ◽  
pp. 63-67
Author(s):  
Hiroshi Katakura ◽  
Shigeru Tsuji ◽  
Ryuichiro Yamane ◽  
Takashi Saito
Keyword(s):  
Experimental Research ◽  
Hydraulic Fluid ◽  
Vane Pump ◽  
Water Based ◽  
Fluid Characteristics

Developed Measuring Methods for Hydraulic Fluid Dynamics and Viscosity at Extreme Pressures and Temperatures

2014 ◽  
Author(s):  
J.-P. Karjalainen ◽  
R. Karjalainen ◽  
K. Huhtala
Keyword(s):  
Power Transmission ◽  
Measuring System ◽  
Hydraulic Fluid ◽  
User Friendliness ◽  
Fluid Properties ◽  
Transmission Fluid ◽  
Viscosity Grade ◽  
And Control ◽  
Fluid Parameters ◽  
Fluid Characteristics

Hydraulic fluid is one of the most important components in every fluid power system. Therefore, fluid properties have to be known with a good accuracy in an increasing number of applications, for example in system’s design, modelling and control. The fluid of interest may be a power transmission fluid as well as a fuel. In defining the needed fluid characteristics, the large variety of different fluid types sets many demands for a single measuring system. Moreover, known fluid properties, of fuels in particular, are needed at constantly higher pressures and temperatures, raising the bar for practical measuring concepts — user-friendliness, safety and equipment cost are also essential criteria. In this paper, two accurate, but rather simple and affordable measuring concepts are presented. The speed of sound in a fluid, hydraulic fluid density and adiabatic tangent fluid bulk modulus are all defined with a direct measurement of the pressure wave propagation. The dynamic and kinematic fluid viscosities are defined with a remotely operated, modified falling ball viscometer. Both the presented methods have been developed further from the previously published concepts of the same authors. With these improved systems, all the mentioned fluid parameters can reliably be measured at up to at least 2,500 bar and at up to at least +150°C. Moreover, the same equipment can be applied to any type of hydraulic fluid, a fuel or a power transmission fluid, regardless of the base fluid, additives or viscosity grade. In addition to presenting the measuring concepts and the equipment used in detail, a selected sample of experimental results will also be presented to demonstrate the performance characteristics of the methods.

scholarly journals An Adaptable Water-Based Mud System for Multiple Applications While Drilling

2019 ◽  
Vol 2 (2) ◽  
Keyword(s):  
Volcanic Ash ◽  
Salt Water ◽  
Drilling Fluid ◽  
Circulation System ◽  
Drilling Mud ◽  
Subsurface Geology ◽  
Water Based ◽  
Drilling Cost ◽  
Drilling Time ◽  
Fluid Characteristics

Due to significant variations of the subsurface geology from the surface to the top of reservoir and requirement of different fluid characteristics for drilling various hole there is a need to use various mud systems. These may include a simple spud mud for surface hole section, an inhibitive drilling fluid for reactive shale section, a salt water-based mud for salt diapirs and salt formations, and a highly lubricating mud for deviated hole sections with high dogleg severity.To optimize each of these separate and distinct scenarios, there is a need to change the mud system while drilling to overcome the technical challenges associated with these formations and wellbore profiles. The change over from one mud system to another is typically done between casing points while constructing the well to overcome specific drilling challenges associated with next whole section.There is significant time and effort required to clean the mud circulation system adequately before a mud change over in order to avoid any contamination of the new mud system.This is especially true when displacing a waterbased mud by an oil-based mud or an oil-based mud by a water-based mud.If this is not done properly, contamination of the new mud by the old mud could be a source of major problems due to partial or complete loss of functional ability of the new mud system. An adaptable drilling mud system that can easily be transformed from a spud mud system to an inhibitive, or a high lubricating or a salt water mud can provide the industry a versatile fluid system with multiple hole section applications.This removes much of the NPT associated with mud changeover, reduces the mud cost as compared to mixing a totally new mud system and eliminates concerns regarding mud contamination as well as any disposal or recycling cost for the replaced system. This paper describes a volcanic ash-based drilling mud that can be used as a spud mud to drill the surface hole, can easily be converted to an inhibitive mud system to drill reactive shale sections of a borehole, a salt water-based mud to drill the salt sections and also a high lubricating water-based drilling mud to reduce torque and drag problems in deviated and horizontal boreholes. The flexible and easily convertible nature of the base volcanic ash-based drilling mud has potential to reduce total drilling cost significantly as it eliminates a significant portion of non-productive drilling time associated with mud changeover, cleaning of mud circulation system, new mud preparation, incorporation of new mud in the circulation system and displacement of the old mud from the borehole by the new mud, etc.

An Analysis of Hydraulic Fluid Wear Performance Discrimination Based on a Statistical Evaluation of a Standard Vane Pump Test

2005 ◽  
Author(s):  
Richard T. Dixon ◽  
Jamie Clare ◽  
Maggie Wenham ◽  
Ronald Bakker
Keyword(s):  
Recent Work ◽  
Statistical Evaluation ◽  
Global Solutions ◽  
Mineral Oil ◽  
Hydraulic Fluid ◽  
Vane Pump ◽  
Wear Performance ◽  
Factors Affecting ◽  
Hydraulic Fluids ◽  
Pump Test

This paper discusses recent work at Shell Global Solutions’ laboratory to investigate the factors affecting vane pump test wear measurements made using mineral oil hydraulic fluids.

An Extended Second Order Polynomial Model for Hydraulic Fluid Density

2013 ◽  
Author(s):  
J.-P. Karjalainen ◽  
R. Karjalainen ◽  
K. Huhtala
Keyword(s):  
Power Transmission ◽  
Second Order ◽  
Polynomial Model ◽  
Hydraulic Fluid ◽  
Wide Range ◽  
Fuel Oils ◽  
Hydraulic Fluids ◽  
Order Polynomial ◽  
Temperature Ranges ◽  
Fluid Characteristics

In this paper, a second order polynomial model for predicting the pressure-temperature behaviour of the density of any hydraulic fluid is presented. The model is an extension of the previously published model by the same authors for more moderate operating temperatures. Nevertheless, for a user the extension will not add any more complexity to the model. Even at a wider operating range, the density model can still always be parameterized without any unknown variables, once the standard fluid characteristics are available. It is shown that compared to the measured values the maximum modelling error is well within 1% at the studied pressure range of up to 1500 bar, and at the studied temperature ranges overall covering from +20 to +130°C, with all the studied fluids. This study includes 10 highly different hydraulic fluids used in various fluid power applications as power transmission fluids or fuel oils. The studied fluids have a density range from 827 to 997.2 kg/m3, and an ISO VG range from 2.6 to 1187. Also the studied base fluids cover a wide range. Moreover, the studied fluids contain different additives or not even additives at all (crude oils). Neither the base fluid nor the additives will be discovered to affect the received modelling accuracy.

Experimental Research on Wear Loss of Slipper Pair in Axial Piston Hydraulic Motor Lubricated with High Water Based Fluid

2012 ◽  
Vol 452-453 ◽  
pp. 119-123
Author(s):  
Yong Xia Gu ◽  
Zhong Ning Zhou ◽  
Fei Gao
Keyword(s):  
Experimental Research ◽  
High Water ◽  
Experimental Results ◽  
Wear Volume ◽  
Wear Loss ◽  
Hydraulic Motor ◽  
Water Based ◽  
Wear And Tear ◽  
Axial Piston

The slipper pairs with concaves of reasonable and unreasonable structures and without concave originally are chosen for the experiment. The experimental results show that appropriate concave distribution can improve the wear and tear condition of the slipper bottom. Under the same experimental condition, the fringe wear volume can be reduced by 28.77%, and the overall wear volume 68.72%, which is the best result.

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