scholarly journals Stabilizing Element for Externally Pressurized Gas-Bearing : 2nd Report, Stabilizing Element Inserted into the Gas-Supply Line

1966 ◽  
Vol 32 (244) ◽  
pp. 1883-1887 ◽  
Author(s):  
Haruo MORI ◽  
Atsunobu MORI ◽  
Reizo KANEKO ◽  
Keigo YOSHIDA
Keyword(s):  
Supply Line ◽  
Gas Bearing ◽  
Stabilizing Element ◽  
Gas Supply

Pressure Sensitive Paint Visualization of Pressure Distribution of Externally Pressurized Circular Thrust Gas Bearing With a Single Gas Supply Hole: Experimental Validation of Variation of Pressure Distribution by Supply Pressure

2017 ◽  
Vol 139 (5) ◽  
Author(s):  
Tomohiko Ise ◽  
Shuma Kobayashi ◽  
Kazuhiro Itoh ◽  
Toshihiko Asami
Keyword(s):  
Pressure Distribution ◽  
Complementary Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Pressure Sensitive Paint ◽  
Pressure Sensitive ◽  
Temperature And Pressure ◽  
Gas Bearing ◽  
Luminescence Characteristics ◽  
Gas Supply ◽  
Good Agreement

This study investigated the use of pressure sensitive paint (PSP) as new measuring technique for measuring the pressure distribution of a gas bearing. An externally pressurized circular thrust gas bearing with single gas supply hole was used as the test bearing to investigate the suitability of this technique. The test bearing was 30 mm in diameter, with a gas supply hole of diameter 0.7 mm. A coat of PtTFPP, the substance used as the PSP, was applied to the bearing surface using an air-assisted spray. The PSP luminescence characteristics were calibrated before the tests because of their dependency on temperature and pressure. The pressure distribution was obtained by averaging 50 images captured by a 12-bit complementary metal-oxide semiconductor (CMOS) camera. These experimental results were compared with the results of a numerical analysis based on the divergence formulation method. There was good agreement between the experimental and analytical results, thus demonstrating the effectiveness of using PSP for pressure distribution measurements.

Performance Comparison of Aerostatic Gas Bearings of Two Different Gas Supply Modes

2010 ◽  
Vol 139-141 ◽  
pp. 839-843
Author(s):  
Ang Sun ◽  
Zu Wen Wang
Keyword(s):  
Laminar Flow ◽  
Flow Model ◽  
Load Capacity ◽  
Performance Comparison ◽  
High Load ◽  
Experimental Result ◽  
Gas Field ◽  
Gas Bearing ◽  
Gas Supply ◽  
Laminar Flow Model

In order to analyze the feature of high-load and high-stiffness gas bearing with tapered recess, the complete gas field consisting of supply hole and clearance is built up, and a laminar flow model and a sectional turbulent-laminar flow model are respectively applied to calculate the pressure distribution of centrally-fed gas bearing with tapered recess in different clearances. The theoretical results agree in general with the experimental. The experimental result demonstrates its high load, however its big gas cavity. On the above basis a circular ring gas supply bearing with tapered recess is presented, the calculation result shows that for this new type of ring inlet bearing the pressure drop in entrance area will be reduced effectively even with smaller tapered recess height, and compared with centrally-fed gas bearing with tapered recess, its gas recess volume decreased and stability increased, while the load capacity is basically the same.

On the Stabilizing Methods of Externally Pressurized Thrust Gas Bearings

1967 ◽  
Vol 89 (3) ◽  
pp. 283-289 ◽  
Author(s):  
Haruo Mori ◽  
Atsunobu Mori
Keyword(s):  
Experimental Results ◽  
Fluid Restriction ◽  
Theoretical Base ◽  
Gas Bearings ◽  
Analytical Results ◽  
Supply Line ◽  
Gas Supply ◽  
Good Agreement

Two kinds of stabilizing methods for externally pressurized thrust gas bearings are presented and analyzed. Both stabilizers of them are composed of fluid restriction and capacitance. The first type of stabilizer, which has been investigated by Loch, has a pair of restriction and capacitance attached additionally to the bearing recess, and the second type has the pair inserted into the gas-supply line to the bearing recess. Since the theoretical base of Loch’s analysis had questionable points, the analysis by the authors is started from a new and different standpoint and applied to the second type as well as to the first type. Experimental results show good agreement with the analytical results and the design of the stabilizers has been established.

Britain's looming gas supply deficit

2003 ◽  
Vol 17 (2) ◽  
pp. 18
Author(s):  
R. Trigle
Keyword(s):  
Gas Supply

Use of Destressing Drilling to Ensure Safety of Donbass Gas-bearing Coal Seams Extraction

2019 ◽  
pp. 7-11
Author(s):  
V.S. Brigida ◽  
◽  
Yu.V. Dmitrak ◽  
O.Z. Gabaraev ◽  
V.I. Golik ◽  
...  
Keyword(s):  
Coal Seams ◽  
Gas Bearing
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