GB/T 26929-2011Terminology for pressure vessels (English PDF)

2.1 General terms

2.1.1 Pressure

Vertical acting on the body force per unit area, namely physics pressure.

Note 1. My legal units of measurement and the International System of Units (SI) unit of pressure is Pa [ska], 1 Pa = 1 newton per square meter, namely. 1Pa = 1N/m2.

Note 2. Depending on the measurement reference, you can use absolute pressure (absolutepressure) and gauge pressure (gaugepressure) represented. Absolute pressure is absolutely

Vacuum at zero pressure as the benchmark measurement of pressure, the pressure in the unit a representation letters. Table pressure is ambient atmospheric pressure as the benchmark measurement

Pressure, that the internal pressure of the container and the ambient atmospheric pressure difference, the pressure in the unit represented by the letter g. In a pressure vessel construction and use , As not otherwise specified, talk about pressure refers to gauge pressure.

2.1.2 Ambient atmospheric pressure

Pressure vessel location atmospheric pressure.

NOTE. during the construction of pressure vessels, as no special requirements, generally the ambient atmospheric pressure is 0.1MPa (a).

2.1.3 The degree of vacuum

Indicates the degree of vacuum of the rarefied gas, that is, the absolute value of negative gauge pressure.

Note 1. The pressure vessel during construction, use of the unit Pa.

Note 2. When the gauge pressure is negative, indicating that the container is a vacuum state. When the full vacuum (fulvacuum) Table pressure -0.1MPa (g).

2.1.4 Temperature

It represents a measure of the degree of cold objects.

NOTE. The thermodynamic temperature (thermodynamictemperature) in our legal units of measurement and the International System of Units, the symbol T said that the unit is

K. There are common Celsius temperature t (°C) and Fahrenheit temperature t (°F). During numerical relationship as follows.

t (°C) = T (K) -273.15 t (°F) = 1.8t (°C) 32

2.1.5 Ambient temperature

Medium temperature around the container location.

Note 1. The container is usually ambient atmospheric temperature.

Note 2. The extreme temperature environment (extremetemperature) refers to the minimum over the years (maximum) atmospheric temperature.

2.1.6 Monthly mean minimum temperature

Minimum temperature value for each day of the month after the month divided by the sum of the number of days.

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