Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by and is under the jurisdiction of the National Technical Committee on Metallurgical Equipment of the Standardization Administration of China (SAC/TC 409).
Lubrication system - Terminology and graphical symbols
1 Scope
This standard defines the terminology and graphical symbols of lubrication system.
This standard is applicable to the expression of terminology and graphical symbols of lubrication system in scientific research, engineering documents and publications.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 786.1-2009 Fluid power systems and components - Graphic symbols and circuit diagrams - Part 1: Graphic symbols for conventional use and data-processing applications
GB/T 6567.2-2008 Technical drawings - Graphical symbols for piping systems - Piping
GB/T 6567.3-2008 Technical drawings - Graphical symbols for piping systems - Piping accessories
GB/T 6567.4-2008 Technical drawings - Graphical symbols for piping systems - Valves and control components
3 Terminology
3.1 Basic terminology
3.1.1
lubrication system
system for supplying lubricant (3.1.4) to friction pair (3.1.10) of mechanical equipment
3.1.2
oil lubrication system
lubrication system (3.1.1) using lube oil (3.1.5) as lubricant (3.1.4)
3.1.3
greases lubrication system
lubrication system (3.1.1) using greases (3.1.6) as lubricant (3.1.4)
3.1.4
lubricant
lubrication medium for reducing friction resistance and slowing down wear of friction pair (3.1.10)
3.1.5
lube oil
liquid lubricant (3.1.4) such as mineral oil and synthetic oil
3.1.6
greases
semi-solid plastic grease lubricant (3.1.4)
3.1.7
solid lubricant
solid-state lubricant (3.1.4) such as graphite and molybdenum disulfide
3.1.8
mainframe
main mechanical equipment served by lubrication system (3.1.1)
3.1.9
friction point
position where friction works
3.1.10
friction pair
system composed of two objects that are in direct contact and produce relative frictional motion
3.1.11
lubrication point
position designated on mechanical equipment to which the lubricant (3.1.4) is supplied
3.1.12
alarm value
alarm preset value requiring corrective action
3.1.13
shutdown value
preset parameter value when the lubrication system (3.1.1) needs to shut down
?
3.1.14
rated conditions
working conditions determined by tests and designed for ensuring normal operation and sufficient service life
3.1.15
rated flow
flow determined by tests and designed for ensuring sufficient service life of elements or piping
3.1.16
nominal flow
flow assigned to the system for the convenience of identifying and indicating the series
3.1.17
rated temperature
temperature determined by tests and designed for ensuring sufficient service life of elements or piping
3.1.18
oil supply temperature
temperature of lubricant (3.1.4) at oil supply port of lubrication system (3.1.1)
3.1.19
pump pressure
outlet pressure of lubrication pump (3.4.1) in lubrication system (3.1.1)
3.1.20
oil supply pressure
pressure of lubricant (3.1.4) at oil supply port of lubrication system (3.1.1)
3.1.21
rated pressure
pressure determined by tests and designed for ensuring sufficient service life of elements or piping
3.1.22
nominal pressure
pressure assigned to an element, piping, or system for the convenience of identifying and indicating the series
3.1.23
test pressure
pressure specified for pressure test or leakage test
3.1.24
coast-down time
time required for the equipment to overcome the mechanical inertia from rotation to complete standstill after the mainframe (3.1.8) is shut down
3.1.25
oil cleanliness
content of solid particle pollutants per unit volume of oil
3.1.26
filtration accuracy
maximum size of particle in impurity-containing lubricant (3.1.4) that can pass through the filter screen
3.2 Type of lubrication system
3.2.1
centralized lubrication system
lubrication system (3.1.1) for centrally supplying lubricant (3.1.4) to multiple lubrication points (3.1.11)
3.2.2
single point lubrication system
lubrication system (3.1.1) for supplying lubricant (3.1.4) to a single lubrication point (3.1.11)
3.2.3
throttling lubrication system
centralized lubrication system (3.2.1) for distributing lubricant (3.1.4) by flow resistance
3.2.4
single-line lubrication system
centralized lubrication system (3.2.1) for supplying lubricant (3.1.4) to the distributor through a main line, and then sending to each lubrication point (3.1.11) by the distributor
3.2.5
double-line lubrication system
centralized lubrication system (3.2.1) for supplying lubricant (3.1.4) to the distributor through two main alternating lines by a reversing valve, and then sending to each lubrication point (3.1.11) by the distributor
?
3.2.6
multi-line lubrication system
centralized lubrication system (3.2.1) for supplying certain amount of lubricant (3.1.4) to each lubrication point (3.1.11) directly through the lines at multiple outlets of lubrication pump
3.2.7
progressive lubrication system
centralized lubrication system (3.2.1) for supplying certain amount of lubricant (3.1.4) to each lubrication point (3.1.11) by the distributor in progressive order
3.2.8
combined lubrication system
centralized lubrication system (3.2.1) composed of several types of lubrication system (3.1.1)
3.2.9
intelligent lubrication system
centralized lubrication system (3.2.1) for supplying certain amount of lubricant (3.1.4) to each lubrication point (3.1.11) under the control of intelligent electrical system
3.2.10
jet lubrication system
centralized lubrication system (3.2.1) for atomizing greases (3.1.6) by venturi effect, and directly spraying it to friction pair (3.1.10) along with compressed air which acts as power
3.2.11
oil-air lubrication system
lubrication system (3.1.1) for making the lube oil (3.1.5) move forward along the pipe wall in waves under the action of compressed air, and spraying the continuous fine oil droplet flow separated from compressed air to the lubrication point (3.1.11)
3.2.12
oil-mist lubrication system
lubrication system (3.1.1) for atomizing lube oil (3.1.5) with the help of compressed air and supplying oil-mist to lubrication point (3.1.11)
3.3 Oil tank
3.3.1
oil tank
container for storing lubricant (3.1.4)
3.3.2
lube-oil shutdown tank
oil tank (3.3.1) for supplying lube oil (3.1.5) during the coast-down time (3.1.24) of mainframe when the lubrication system fails to supply oil normally, which is usually classified into atmospheric emergency lube oil tank and pressure oil tank
3.4 Pump
3.4.1
lubrication pump
pump for conveying lubricant (3.1.4) by the change of closed working volume
3.4.2
main lubrication pump
oil pump working when the lubrication system (3.1.1) is in normal operation state
3.4.3
emergency lubrication pump
oil pump for replacing the main lubrication pump (3.4.2) which fails to work normally
3.4.4
manual grease pump
lubrication pump (3.4.1) operated by manually pulling the handle
3.4.5
electric grease pump
lubrication pump (3.4.1) driven by an electric motor
3.4.6
pneumatic grease pump
lubrication pump (3.4.1) for supplying greases (3.1.6) accompanied by the movement of fluid under the action of compressed air
3.4.7
grease jet pump
pump for blowing greases (3.1.6) into oil-mist particles and spraying it to lubrication point (3.1.11) under the action of compressed air
Foreword i
1 Scope
2 Normative references
3 Terminology
3.1 Basic terminology
3.2 Type of lubrication system
3.3 Oil tank
3.4 Pump
3.5 Heater
3.6 Cooler
3.7 Filter
3.8 Valve
3.9 Control and testing
3.10 Pipeline
4 Graphical symbols
4.1 Graphical symbols of lubrication system
4.2 Instructions for use of graphical symbols
Annex A (Normative) Instructions for use of graphical symbols
Index
