This standard is formulated with reference to the international standards ISO/DIS 538 "Shipbuilding - Common symbols for ventilation and piping installation drawings"; ISO/R 538-67 "Common symbols for ship piping installation drawings"; ISO/R 784-68 "Common symbols for ship sanitary system installation drawings". GB 4791-1984 Graphic symbols for ship piping accessories GB4791-1984 Standard download decompression password: www.bzxz.net

UDC 629.12.61:003.62/63
National Standard of the People's Republic of China
GB4791-84
Graphical symbols of pipeline accessorysystems in ships
Published on 1984-11-26
Standard of the kitchen
Implemented on 1985-11-1
National Standard of the People's Republic of China
Graphieal symbols of pipeline accessorysystems in ships
GB 4791 :-84
This standard refers to the international standards ISO/DIS538 "Symbols for Installation Drawings of Ventilation Duct Systems": ISO/R538-67 "Common Symbols for Installation Drawings of Pipe Systems": ISO/R784-68 (Shipbuilding System Installation Symbols). The drawings should use the numbers in the table as much as possible. When necessary, the numbers should be used. Except for 9.3, 9.9, and 9.10 of this standard, the numbers are newly added. All the numbers of the drawings of the piping components listed in this standard can be added to the drawings with additional instructions. The special graphic numbers in the hydraulic system (circuit) drawings are all in accordance with the national "Drawing Numbers"
When drawing large-scale dimensions (such as 1: 100) When drawing the second drawing, use the graphic symbols specified in this standard to simplify the drawing according to the actual situation.
1 Basic technical symbols according to Table 1.
Installation flow meter
Technical table
Along the exciting medicine test 4 according to Table
National Bureau of Standards 1B4-11-26 Release
1985-11-0t Practical travel
Pipe one and paragraph: joint sample write dial and 2.
IS0 on this path
Single pipe
Teaching Department Management
Dazhou Connection Capital Yisa
Connecting liquid transformer and pipe
T Haizi
Downward pipe
According to the medical head
Butterfly joint
GB4791 --84
*IsO
Flange joint
Quick joint
Check joint
Frame flexible joint
Expansion joint
Sliding expansion joint
Yiwei expansion joint
Note||Abbreviation
GB 4791--84
Continuation table 2
*1so symbol,
Reduced expansion joint
Screw cover (calcium tower)
Flange reduction (hundred method)
Double joint flange
Wine quality (Beijing rate 1
Wine quality (non-secret)
Single board
Xi pipe barrier
GB 4791--84
Continued Table 2
3 Symbols for gate valves and lubrication boxes are shown in Table 3.
H pass 2 company
year verification
electric communication point
direct inquiry communication
fishing deadline word reading
time load stop positive network
birth Yuezhou
s selection number
GB 4791-84
, please do not flow in front, the group does not need to give the mountain Li number on the design drawing level
Zhuohai Zhengguo brand
Zhuohai Zhengguo brand
Zhentong wave design
Keyan wave-proof attachment
source reduction valve
*s0 center number
GB4791-84
Continued table 3
·New meaning indication flow, it is necessary to include it in the design drawing bag. Two
signal
pass||safety
when
direct|||limit
fast||direct
cannot||orWww.bzxZ.net
piece
piece
fast
angle
GE 4791-84
replacement3
area
one
must||point||flow
value
not||point||in the design drawing,3.28
official source
1rush suction
road
road cutoff:1stop
road swing layer effect box
1s0e year
GB 4TF1—B4
*+English and French finger card flow from: do not need to shoot my plan to report the mountain, 8
4 control and adjustment elements and other guide according to Table 4.
No principle operation
GE 4791-84
GB4791-84
Continued Table 4
5 control language element mark can be used in combination with the part symbol, its example is shown in Table 5. Cut 5
Remote operation through fee small example
Remote operation solution through cut stop width
Float direct sensitive stop stroke
Active system through the upper ring
Mold high return interest stop valve
Fixed point through load stop adjustment
*Jsot number
Spare The symbol of the plug is as shown in Table 6.
Self-opening male plug
Direct-swing rotary
L-type rotary plug
Three-way T-type rotary plug
Four-way four-way rotary plug
Four-way two-way four-way rotary plug
Bottom-connected type rotary plug
Direct-through bottom-connected type rotary plug
Angle bottom-connected type
Two-way bottom-connected rotary plug
IS0 does not have this symbol.
GB4791—B4
Standby
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