Valve opening and closing too quickly will cause near instantaneous fluid pressure fluctuations (water hammer), the peak is usually able to reach pipes more than six times the normal pressure, but also because the system water hammer wave reflection serious concussion;
2013年11月16日星期六
Tensile shear bolt connector can be used and compression fittings specimen specimen
Tensile shear bolt connector can be used and compression fittings specimen specimen to determine the shear capacity of a single bolt. Tensile shear specimen joint compression fittings capacity than the specimen is low. This is because the connector in the stretching tension bolt shaft is reduced, and the connector cover in the stretching
High pressure ball valve open, the result of reduced friction. Experiments show that both for low-alloy carbon steel bolts or bolt, bolt tension specimens in shear
Instrument manifolds of about 62% of the tensile strength of steel bolt and compression specimens was 68%. When one or two tension specimen surface in the screw pattern shear zone, then press the bolt shear capacity decreased in proportion to the net section.
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