This standard specifies type, basic parameter, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of oil-transferring gear pumps (including external gear pumps and internal gear pumps, hereinafter referred to as pumps).
This standard is applicable to the pumps that transfer lubricative oils and liquids similar to oils, free from solid particle and fiber, not higher than 150℃, and within the viscosity scope of 5×10-6m2/s~1.5×10-3m2/s (external gear pump) or 1×10-5 m2/s~3×10-1 m2/s (internal gear pump).
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 265 Petroleum Products - Determination of Kinematic Viscosity and Calculation of Dynamic Viscosity
GB/T 266 Petroleum Products-Determination of Engler Viscosity(GB/T 266-1988, neq Γ OCT 6258: 1952)
GB/T 699 Quality Carbon Structural Steels
GB/T 1176 Specification for Cast Copper Alloys(GB/T 1176-1987, neq ISO 1338: 1977)
GB/T 1220 Stainless Steel Bars
GB/T 1348 Spheroidal Graphite Iron Castings(GB/T 1348-2009, ISO 1083:2004, MOD)
GB/T 2100 Corrosion-resistant Steel Castings for General Applications (GB/T 2100-2002, eqv ISO 11972:1998)
GB/T 3077 Alloy Structure Steels
GB/T 3216-2005 Rotodynamic Pumps - Hydraulic Performance Acceptance Tests - Grades 1 and 2 (ISO 9906:1999, MOD)
GB/T 5661 End-suction Centrifugal Pumps-Dimensions of Cavities for Mechanical Seals and for Soft Packing (GB/T5661-2004, ISO 3069:2000, MOD)
GB/T 7306.1 Pipe Threads with 55 Degree Thread Angle Where Pressure-tight Joints Are Made on the Threads - Part 1: Parallel Internal and Taper External Threads (GB/T 7306.1-2000, eqv ISO7-1:1994)
GB/T 7306.2 Pipe Threads with 55 Degree Thread Angle Where Pressure-tight Joints Are Made on the Threads - Part 2: Taper Internal and External Threads (GB/T 7306.2-2000, eqv ISO7-1:1994)
GB/T 9112 Types and Parameters for Steel Pipe Flanges
GB/T 9439-1988 Grey Iron Castings
GB/T 11352 Cast Carbon Steels for General Engineering Purposes(GB/T 11352-2009, ISO 3755:1991, ISO 4990:2003, MOD)
GB/T 13306 Plates
GB/T 13384 General Specification for Packaging of Mechanical and Electrical Products
JB/T 4297 Painting Specification for Pumps
JB/T 8091 Testing Methods for Screw Pumps
JB/T 8097 Methods of Measuring and Evaluating Vibration of Pumps
JB/T 8098 Methods of Measuring and Evaluating Noise of Pumps
3 Type, Model and Basic Parameter
3.1 Type
3.1.1 Pumps are classified into external gear pumps and internal gear pumps by meshing type.
