COOLING WATER PUMP

PURPOSE:To prevent rupture of cap members due to thermal stress, by making the cap members with a ceramics material, and arranging small metal wires on the inside of the cap members in a unitary manner. CONSTITUTION:An inner cap member 7 and an outer cap member 8 are both made of a ceramics material...

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Bibliographic Details
Main Author SHIBATA NORIHIKO
Format Patent
LanguageEnglish
Published 10.07.1984
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS
STEAM ENGINES
WEAPONS
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Summary:PURPOSE:To prevent rupture of cap members due to thermal stress, by making the cap members with a ceramics material, and arranging small metal wires on the inside of the cap members in a unitary manner. CONSTITUTION:An inner cap member 7 and an outer cap member 8 are both made of a ceramics material, and they incorporates therein small metal wires 15 arranged in the form of a net. When a pump is set into operation, the radially inner section of the cap members 7, 8 are held in sliding contact with a vane portion 12b, so that frictional heat is produced from the section. On the other hand, the radially outer section of the cap members 7, 8 is cooled by cooling water, so that the temperature at the section is kept low. Resultantly, a temperature gradient is caused at the boundary area. However, since heat is transmitted via the small metal wires 15 arranged on the inside of the cap members 7, 8, the temperature gradient is made gentle, so that it is enabled to prevent rupture of the cap members due to thermal stress.
Bibliography:Application Number: JP19820229535