This standard specifies the thermal engineering graphic symbols and text codes for technical documents. This standard applies to technical documents related to design, scientific research, production and teaching in the field of thermal engineering. GB/T 4270-1999 Thermal Engineering Graphic Symbols and Text Codes for Technical Documents GB/T4270-1999 Standard Download Decompression Password: www.bzxz.net

ICS.01.080.20
National Standard of the People's Republic of China
GB/T 4270—1999
Graphical symbols and lelter codes for hermal engineeringinthe technical documentationPublished on 1999-11-23
Implemented on 2000-05-01
Published by the National Quality and Technical Supervision Bureau
CH/T4270—1999
Citations
4 Thermal symbols
5 Thermal text codes
Appendix A (Appendix for reference)
GB/T4270—1999
This standard is a revised version of GR/F4270.-19845 Thermal graphic symbols and text codes. The standard was formulated with reference to GB/26251981 Graphical symbols and text codes for process detection and control flow charts, GB/16567:1986 Graphical symbols for control systems, and GB3102.1~GB3102:121993 Knowledge units (idt[S()31/1-12) and other standards, and is consistent with the above standards.
Compared with the previous version, this version has four major changes. The first is the change of the standard name. The original name is Thermal Engineering Graphic Symbols and Text Codes. According to the provisions of GB/T15555·1995 Graphic Symbol Terminology, the standard name is changed to Thermal Engineering Graphic Symbols and Text Codes for Technical Documents.
The second is the adjustment of the format and structure of the original standard. The format and structure of the revised standard comply with the provisions of G/1.1999. The third is to modify, supplement and improve the thermal engineering graphic symbols. The modifications and supplements are mainly made in the following five parts: 1. In the piping graphic symbols, the original graphic symbols are modified and the graphics of insulation pipe, protective pipe, casing, heat tracing pipe, shielded pipe, etc. are added.
2. Graphic symbols of pipe connections are added, including screw connection, flange connection, intersection pipe, cross pipe, reducer, etc. 3. In the valve shape symbols, needle-shaped connection, valve adjustment, plug plate adjustment, and self-acting pressure control are added. 4. In the actuator diagram, the electric actuator was revised, the pneumatic actuator and hydraulic actuator were deleted, and the digital actuator and the dynamic actuator were added. The membrane actuator was divided into two types: with spring and without spring. The spring actuator was taken as the state, and it was further divided into the single actuator with manual, with pneumatic valve positioner, with electric valve positioner with manual resetting, double and with remote positioning device.
5, the graphic symbols of thermal engineering components and tables were added. Trend 4 is to modify the thermal code and supplement the relevant code in GB102.:3102.121593. In addition: According to the provisions of GB3202.1--3102.12-1993, the original standard quantity standard number is changed to characteristic number, and the characteristic number is divided into four aspects: dynamic transfer, heat transfer, mass transfer in two-component mixture and physical property band number. This revised version also adds the commonly used English abbreviations and conversions of thermal process detection and control system. Appendix A of this standard is a reminder of the main body of this standard. This standard is proposed and assigned by the National Energy Basic and Management Standardization Technical Committee. The drafting units of this standard are the Institute of Engineering Thermophysics, Chinese Academy of Sciences, and the China Institute of Standardization and Information Classification and Coding. The main drafters of this standard are Yang Zhenzhi, Chen Mingjing, Feng Shaoyi, Yang Dan, and Xu Bangzhao. National Standard of the People's Republic of China
Craphical symbols and letter coded af thermal engineering engllrerlng in the techncal documentation1Scope
This standard specifies the thermal engineering graphic symbols and letter coded af thermal engineering engllrerlng in the techncal documentation1Scope
This standard specifies the thermal engineering graphic symbols and letter coded af thermal engineering engllrerlng in the techncal documentation GA/T4270—1999
Replaces G/F427(—1984
This standard is used for technical documents related to design, scientific research, production and teaching in the field of thermal engineering. 2 Applicable standards
The texts contained in the following standards are quoted in this standard and constitute the reference points of this standard. When this standard is published, the versions shown are valid. All standards are subject to revision. All parties using this standard should explore the possibility of using the latest version of the following standards GB/T2625—1981: Graphic symbols and text codes for process detection and control diagrams GB/T4299—1984 Graphic symbols for ship ventilation systems GB/T6567.2—1986 Graphic symbols for pipe systems GB/6567.4—1986 Graphic symbols for pipeline systems Tidal gates and control elements GH GB 3102.1—1993
Reforms and units of space and space
GB3102-2--1993
Periods and related records and units
GB3332.3—1993
Quantities and units of geography
GB3102.1993
Appropriate units of heat
GB 3102.3—1993
GB3102.6—1993
Electrical and electrical quantities and units
Quantities and units of light and related electromagnetic radiation
Ancient mathematics and units
GB 3102.7
GB 3102.8—1993
GB 3102.12:1993
Physical chemistry
Quantities and units of molecular physics
GR/T 15565—1993
GB/T170501997
HG/T 2U505—1092
3 Definitions
Graphic special terms
Thermal radiation terms
Text codes and graphic symbols for process detection systems (idtISA-S5.1) This standard adopts the definitions in 6B/T15565 and the following definitions: 3-1 Thermal engineering graphic symbols Specific graphic symbols used to represent thermal equipment 3.2 Thermal letter codes letter cpdes for thermal enginerring pull 1 Bimu, Greek letters and special effects to represent the physical penalty of inverse thermodynamics and the semi-code of thermal engineering detection and control system 33 charncteristic number charncteristicnumerul is a non-dimensional steel standard named by scientists, including dynamic pad transfer, heat plate transfer, mass-based transfer in two-component mixtures, physical properties with national quality thermal technology supervision approved on 1999-11-23 and implemented on 2000-05-01
and all fluid dynamics,
4 thermal engineering graphic special numbers
4.1 Graphic symbols of piping systems
4.1.1 Pipeline to shape
Pipeline graphic symbols are shown in the table,
4- -. -- 2
4- 1- 1- 3
4. 1- 1- 6
Graphic symbol
Diagram symbol for pipeline reverse connection
Graphic symbol for pipeline connection must be shown in table 2.
4.1- 2. 6
4. 1.2. 7
GB/T 4270
Chinese female name
Wujing pipe
Baowenyin
Zuoran pipe
Liyin pipe
Shenzheshouyu
Ten Yi names
Jiaowenjin
Guiwenwu
English name ball
mein pipeine
thcrmst ineuls:ion pipeline
brsncb pipeize
Ptotected pipelioe
seakrtrd nipe line
assricintexl w.rmur.g p.pr.lhne.Tugerveg gpeline
xhadowrd ninrl nc
American name
Ctoss (wver ipeline
j intercross pipe
I so* hend piye
Chengla connection
Transmission connection
External material sparse
Change branch pipe
thrend conmectipng: pigx
flangs oonneoting pipc
meeirm \urning discetion
veriable diemeter sipe
Line width 3
GB.T 6567-2:966(I. 4)
Width is 6/3
Gn/T 6567. 2—15B6<1. 3)
GB/T 6E67.2—1$BE(1.)
K/P6567.2—15RE<1.E:
GR/T6E.21RF is called special
towards the beat tube
GB/T6667-21986 is called
this can be piped
two senses are not connected to cover the theft of the lucky disconnection
a* joint into
GH/7 6567.21986<1-103
G/T 6567.2—1986:2-1)
G3/T 65E1. 2—1986(2. 2)Www.bzxZ.net
CH/T6567.2—1986:111)
CE/T 4299--1984:3.6)
4.2 Diagram number of valve and damper connection
4-2.1 Diagram number of valve
Valve diagram number see Table 3,
4- 2- -. -
4- - 1- 2
4. 2. 1. 3
4. 2. 1. 4
4. 2. 1. 5
4. 2, 1. e
4. 2. 1. 7
4. 2. 1, 9
4. 2.1. 1h
9. 2. 1. 11
2. 1- 12
4- 2-1-13
4. 2.1-14
4. 2. 1.15
GB/T 427D—1999
Ten-word name
End of two
Three-way reading
Three-way blue
Four-way vegetable hope
Zheng, Guoli
Jiewen name
gate yalve
aDgle alve
threeway valve
ball ialwe
three wpy coak
cherx walve
redu:linl preasure valve
closed wey haruur lspe
safety valve
open Jred+ lau:utr lypr
Safety vetve
CH/T567.4—19861.1)
GD/T 6567. —1986(1- 2)
GR/T5KY.41156(1.12)
GD/T 6: BY. 4—1NH6(1.133
GH/T R5R7,+-1528(1.14)
GB/T 6E67.4 1660(1.4)
E/1 6567.4—1956(1.7)
G0/T E5E7. :—1966(1-H; from
left to right
GT 8533.4—1986t1 J3>M
left to right
G3/T C507. 1—1946:1, 9. 1)
G3/T 6567. 4- 1986:1. 0. 2)
4. 2. :.:6
4. 2. 1. 18
4. 1. 1- 20
. 2. 1.21
Circular shape symbol
4.2.2 The graphic symbol of the gate connection is shown in Table 4,
National multi-symbol
4.3 The graphic symbol of the execution engine is shown in Table 5
4- 3- 2
Medical shape symbol
GB/T 42701999
Table 3 (end)
Chinese name
Two-diaphragm valve
Needle valve
Water valve
Self-medicine
Flake control valve
Chinese name
Screw connection
Hui Lan Lao Ji
Chinese customer name
Mathematical actuator
butterlly
Illegible name
displusg valve
nercle v6lve
tTainer valve ttap
botterevalv
xelf pctirg Prnsure cantrol
English name
thrrad cnnnerring
Ilange connecring
weldug
English name
digical L=tuntnr
single ball heat dinphiarr.pingnppoardne-acting mechanism
without spring-actuated diaphragm
actuator
station-closed actuator
single-acting
tuarer
diephregmepriog abeentor-
posed sctuacor
pieton nrrlazor singlc-scrir.g said
GB65641.5
GB/T G567.4—1986(1.6)
GA/T 6567.4—196G(1.11>
GB/T26251281(Appendix 1)
(H/7 6567.4—1986(2.1)
GD/T 6567- t—148h(2- 2)
GB/T 6567.41285(2.J)
1IG/1 20505—1992(u.6--42
225—11313.5.2.215
GB/T 9685—1$91(3.5-9.222
HG/Gate 20505—1992(5.6.1-5)
4- 4- 32
National symbol
CD/T4270
Table 5 ()
Chinese name
Model rotary mechanism
Double acting
Or decision mechanism
Electric switching mechanism
Actuator with lower wheel
Heat-actuating mechanism with pneumatic setting
Actuator with air door positioning
Actuator with manual reset device
t||with product rational position loading
actuator
thermal measuring element and instrument surrounding symbol
thermal measuring panel element and instrument cable graphic symbol see table 6 in
4.5 finger force equipment graphic symbol
4.5.1 frequency protection graphic symbol and
Chinese if ring
thermal electric regulation
connection pressure connection
section orifice plate
wenqiu sound
instrument effect change
English name
[ston aczunto dcuhie-arting
uotoring sctuator
solepoid actwsor
actuatur with baod wheel
actuator ith pneumacic velvePoeition
sctuator winb elecric ralve
position
clualo witn merual rewel
Stluatur with rerinte. rrnet table 6
raise the name money
thermocouple
registanee ermperatdre detecTOE
presyre-joia
urifice
Venturi
hcter.tranxmirtet
FG/T 2355-1102(5, 6.1 6)
GDT 2625198:(3.5.2.2-4)
GB/T 26251981(3.5.2.2 5)
With film actuator with elasticity as the system
GB/T 26251$81(3.5.2.3-1)
With film actuator with group yellow as the system
G[/T 2625—1981(3.5.2. 3-2)
With elastic actuator as the system
GB/F 2E24—1681(4.5.2-3-3)With electromagnetic actuator as the system
GE/T 2625—1981(J, 5.2. 3-4) Electric actuator GE/T 2825~.1NK1<3.5.2.33, description GB/T 262E---1981(3.2-1) GB/T262E19B143.2-2) GE/T 2625 15BI(3.2-5) G1/I 2526-98I(3.&-6) To the standard or change the general standard and tariff number GB/T 2625-1SB[Sound particle plus
(instentateoue）(surud)pailicleacceieratiom
instantaneous: [add chicken
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