HG/T 20692-2000 Unified regulations on the contents of thermal engineering design and construction drawings for chemical enterprises
Some standard content:
Industry Standard of the People's Republic of China
Code on Content and Procedure of Working Drawing for Design ofThermoenergy Engineering in Chemical Enterprises
Code on Content and Procedure of Working Drawing for Design ofThermoenergy Engineering in Chemical EnterprisesHG/T20692-2000
Editor: China Wuhuan Chemical Engineering CorporationApproval department: State Administration of Petroleum and Chemical IndustryImplementation date: June 1, 2001National Chemical Engineering Construction Standard Editing Center (formerly Engineering Construction Standard Editing Center of the Ministry of Chemical Industry)2001 Beijing
"Code on Content and Procedure of Working Drawing for Design ofThermoenergy Engineering in Chemical Enterprises" (HG/T20692-2000) is a chemical industry standard organized by the National Chemical Thermal Engineering Design Technology Center, compiled by China Wuhuan Chemical Engineering Corporation, and approved by the State Administration of Petroleum and Chemical Industry.
With the rapid development of science and technology and the continuous reform and improvement of the design system, the "Regulations on the Unification of the Depth of Contents of Thermal Engineering Design Construction Drawings" which was implemented on July 1, 1984, can no longer meet the requirements of various design units. This regulation is revised on the basis of the original version.
Proposing unit: National Chemical Thermal Engineering Design Technology Center (formerly the Thermal Engineering Design Technology Center of the Ministry of Chemical Industry)Editing unit: China Wuhuan Chemical Engineering Company (formerly the Fourth Design Institute of the Ministry of Chemical Industry)Main drafters: Zhou Fengzhen, Liu Yinglu, Song Jukui1General principles
2Pipeline medium code
3Drawing method of surface lines
4Coding method of equipment position number
5System (process) diagram equipment legend
6System (process) diagram pipe, pipe fittings, valves and pipeline accessories legend7Drawing of system (process) diagram
8General legend of equipment and piping layout diagram
9Drawing of equipment layout diagram
10Representation method of common materials
11 Pipeline diagrams Pipes, pipe fittings, valves illustrations…12 Drawing of pipeline layout diagrams
13 Drawing of main pipeline axonometric diagrams
14 Drawing of smoke, air and pulverized coal pipeline diagrams
Appendix 1 Pipeline naming table
Appendix 2 Pipeline material grade table
Appendix 3 Spring support and hanger summary table
Attachment 1 Thermal power station process pipeline instrument flow chart Home page Attachment 2 Thermal power station process pipeline instrument flow chart Attachment 3 Thermal power station outdoor equipment layout L-0.300 plane Attachment 4 Pipeline room and coal bunker room pipeline layout EL±0.000 floor plane Explanation of terms used in this regulation
Article explanation
（11）
.. (19)
（36)
（40)
（43)
（57)
（58）
：(63)
：（64)
（65)
（67)
（69）
…(71)
（73）
1 General Provisions
1.0.1 "Uniform Provisions on the Depth of Contents of Thermal Engineering Design Construction Drawings" (HG/T20692-2000) is applicable to the construction drawing design of thermal energy projects (hereinafter referred to as thermal engineering) of newly built large and medium-sized chemical enterprises, including thermal power stations, industrial boiler rooms, etc. For the construction drawing design of thermal energy projects of small enterprises, thermal energy projects of technical transformation or expansion of old factories, and other thermal energy projects, these provisions can be referred to.
All thermal engineering design construction drawings that are closely related to chemical plants and go deep into the boundary of chemical plants should refer to the relevant documents in the chemical design regulations for implementation so as to be unified with them. 1.0.2 Composition of design documents for construction drawings
1 Technical documents: construction drawing design instructions, design change information, design document catalog, design documents and other related technical documents.
2 Finished product drawings (i.e. construction drawings): system (process) drawings, equipment layout drawings, pipeline layout drawings, main pipeline axonometric drawings, non-standard equipment drawings, equipment installation drawings, equipment pipe opening orientation drawings, non-standard pipeline layout drawings, non-standard pipe fittings drawings, pipeline support drawings, and other finished product drawings.
3 Statistical tables of construction drawings: equipment list, pipeline installation material list, pipeline support list, spring support and hanger summary table, equipment and pipeline anti-corrosion and thermal insulation list, comprehensive material list, equipment anchor bolt list, and other construction drawing statistics.
Writing requirements
Writing scope: file directory, design description, drawings and tables, etc. 1
2 Font: Chinese characters use 5, 6.7 Fangsong fonts. Arabic numerals use 3.5, 5 print fonts. English letters use 3.5, 5 print fonts.
3 The writing format of the file description shall follow the unified format of each design unit. 1.0.4
Construction drawing design instructions
Overview
Design basis: For a section of the project design or a single project design, the design basis can be explained when necessary. (1)
The model, specification, number, working parameters, etc. of the main equipment such as machines and furnaces confirmed by the order. Briefly describe the scope and content of the construction drawing design, the characteristics of each major system, the preparation and composition of the design documents, and briefly describe the characteristics of the equipment layout and the relevant situation of the reserved expansion position. (4)
2 Briefly describe the relevant precautions for operation, maintenance and overhaul when necessary. 3 Explanation of modifications made to the preliminary design in the construction drawing design. (1)
Modification of the design scheme.
Changes to the system.
(3) Approval opinions of the superior approval unit on the modification of the preliminary design. 4 Installation instructions
(1) Standards, specifications and regulations for the construction and acceptance of equipment and pipelines. When there are special requirements for the installation of equipment and pipelines, they should be explained. (2)
Specific requirements for the installation of equipment and pipelines as well as pressure testing, cleaning, corrosion prevention, protection, insulation, painting, coloring, etc. (4) It should be particularly pointed out that the equipment needs to be checked for size after arrival before the foundation construction can be carried out. (5)
The simplified drawing method on the drawing or the parts omitted according to regulations, as well as the parts that can only be determined according to the actual situation on site, should be explained separately.
(6) Other special installation requirements and precautions. 5 Other instructions for the construction drawing design.
Media code
Pipeline media code
Chinese name
English name
ATMOSPHERICAIR
Gas-ash mixture
Blast air
Continuous blowdown
Periodic blowdown
Boiler system blowdown
Boiler feed water
Gas-ash mixture
(Circulating) Cooling water
(Circulating) Cooling return water
(Circulating) cooling water supply
Chemical sewage
Carbon dioxide
Continuous sewage discharge
Condensate
Deoxygenated water
Desalted water
Decarbonized water
Exhaust and powder exhaust fan discharge
Tail gas (exhaust gas)
Waste steam (to atmosphere)
ASH-AIRMIXTURE
ALKALI
ASH SLAG
ASHSLURRY
BLOWINGAIR
BLOWDOWN
CONTINUOUS BLOW DOWN
PERIODICBLOWDOWN
BLOWOFF
BOILERFEEDWATER||BOILER WATER
COALGAS
COAL-AIR MIXTURE||t t||COOLING(TOWER)WATER
COOLING(TOWER)WATERRETURN
COOLING(TOWER)WATERSUPPLY
CHEMICAL SEWAGE
CARBONDIOXIDE
CONTINUOUS BLOW DOWN |)
Fuel gas
Flue gas
Fuel oil
Expansion steam
Filtered water
Fire water
Speed regulating oil
Hot air
Hydrazine solution
Heat carrier
High pressure steam
High pressure saturated steam
High pressure superheated steam
High pressure condensate
Instrument air
Low pressure steam
Low pressure saturated steam
Low pressure superheated steam
Low pressure condensate Liquid
Lubricating oil
Liquid discharge
Lime milk
Medium pressure steam
Medium pressure saturated steam
Medium pressure superheated steam
Medium pressure condensate
Make-up water
Non-polluting discharge
Natural gas
Secondary air
Chemical deoxidizer
FUELGAS
FLUEGAS
FUELOIL
FLASHSTEAM
FILTERED WATER
FIREWATER
GOVERNOROIL
HOTAIR
HYDROCEN
HYDROCHLORICACID
HYDRAZINESOLUTION
HEAT CARRIER MATERIAL
HIGH-PRESSURE STEAM
HICH-PRESSURESATURATEDSTEAM
HIGH-PRESSURESUPERSTEAM
HIGHPRESSURECONDENSATE
INSTRUMENT AIR
LOW-PRESSURESTEAM
LOW-PRESSURESATURATEDSTEAM
LOW-PRESSURESUPERHEATEDSTEAMLOW-PRESSURECONDENSATE
LUBRICATING OIL
LIQUID DRAIN | | tt | AIN
AMMONIA
NATURALGAS
OVERFIREAIR
OXYGENSCAVENGER
Factory (miscellaneous) air
regular Blowdown
Process condensate
Process gas
Preheated air
Primary air
Phosphate solution
Clarified water
Drinking water
Production wastewater
Reducing agent
Saturated steam
Steam condensate
Secondary cooling water
Sodium carbonate
Caustic soda
Superheated steam Steam
Softener
Industrial water, miscellaneous water
Sealing oil
Safety valve emptying
Third air
Turbine oil
Two-phase flow
Mixed hot steam
Vacuum exhaust
Flue gas after dust removal
PLANTAIR
PERIODICBLOWDOWN
PROCESS CONDENSATE
POWDEREDCOAL
PROCESSGAS
PREHEATED AIR
PRIMARYAIR
PHOSPHATICSOLUTION
PURIFIEDWATER
POTABLE WATER
REDUCINGAGENT
RAWWATER|| tt||SATURATEDSTEAM
STEAM CONDENSATE
SECONDARYCOOLINGWATER
CLUDGE SLAG
SODIUMHYDROXIDE
SUPERHEATED STEAM
SOFTENER
SERVICE WATER
SEALOIL
SOFTWATER
SAFETY VALVE TO ATMOSPHERE
TERTIARY AIR
TURBINEOIL
TWOPHASEFLUID
TRACING STEAM
VACUUM EXHAUST
WARMAIR
WASTEGAS
WASTEOIL
WASTEWATER
Note: 1 The English letter "o" in the pipeline medium code can be written as "" to be consistent with the chemical process specialty. 2 In addition to the pipeline medium codes listed in the table, additional codes can be added when necessary. 3 When the same medium has different parameters or different uses, the method of adding a subscript in the lower right corner of the medium code is used to distinguish them, and it is explained in the remarks.
For example: IS is 0.5MPa low-pressure steam.
LS2 is 1.24MPa low-pressure steam.
Drawing lines
Line name
Thick solid line
Medium solid line
Line type
Drawing method of drawing lines
Line width
1. Main pipelines in system (process) diagram
2. Equipment outlines in equipment layout diagram and equipment pipe opening orientation diagram
3. Pipes represented by single lines in pipeline layout diagram (about 0.8~1. 2mm)
4. Pipeline axonometric drawing pipeline
5. Visible shape lines of equipment general drawing, parts drawing, pipe fittings drawing, bracket drawing, etc.
6. Diagram border line
7. Equipment position number line, etc.
1. Minor pipelines in system (process) diagram
2. Pipes represented by double lines in pipeline layout diagram3. Representation lines of flanges, valves, socket welding and threaded pipe fittings in pipeline axonometric drawing
4. Thicker lines in tables
5. Equipment support and equipment foundation in equipment layout drawing 7
Thin solid line
Thick dashed line
Thin dashed line
Dash-dotted line
Dash-dotted line
Thick dash-dotted line
Thick dash-dotted line
Wave line
Break line
b/3~b/4
1. Lines indicating civil engineering in drawings such as equipment layout and piping layout
2. Lines indicating civil engineering in drawings such as system (process) diagram and piping layout Equipment legend or equipment outline and flange, valve, etc.
3. Section lines of equipment brackets, parts, pipe fittings, etc.
4. Indicator lines, lead lines, dimension boundaries and dimension lines
5. Pipes subject to heating in the accompanying pipe diagram
6. Format lines of drawings and tables
7. Fine lines in tables
1. Lines indicating covered parts in the drawing
2. Buried pipelines
3. Buried pipelines in system flow charts and layout drawings4. Equipment and pipelines in the part to be expanded
1. Invisible outlines of equipment, brackets, parts, pipe fittings, etc.
2. Civil engineering part to be expanded
3. Parts of equipment, brackets, parts, pipe fittings, etc. that indicate threads
Center line
1. Imaginary lineWww.bzxZ.net
2. Omitted line
Crane rail
Boundary line
Fracture line,
Partial part line
Fracture line
4.0.1 General Provisions
4 Equipment Position Number Coding Method
1 For equipment that is closely related to chemical process and is deeply involved in the thermal design of the chemical plant boundary, the equipment position number coding method should be consistent with the chemical design.
2 For equipment within the thermal plant boundary of public engineering, the equipment position number coding method is expressed in three sections, namely, equipment classification code, equipment sequence number and identical equipment code. 4.0.2
Equipment Position Number Coding Method
1 Equipment Position Number Representation Method
Each equipment should be assigned an independent equipment position number. On the system (process) diagram, equipment layout diagram and pipeline layout diagram, a 0.8mm thick solid line should be drawn below the equipment position number to mark the equipment position number. As shown in the following figure: B29001a
Equipment position number line
Code for the same equipment
Equipment sequence number
Equipment main item number
Equipment classification code
Equipment sequence number
2 Equipment sequence number: The equipment sequence number consists of the engineering main item number, i.e. the process number, and the equipment sequence number. The equipment sequence number is represented by two digits and is written in sequence of 01, 02, and 03. 3 Code for the same equipment: The same equipment refers to equipment with exactly the same equipment name, structural type, and working medium parameters. In order to distinguish their numerical sequence, a lowercase English letter subscript is added after the equipment sequence number and is written in sequence of a, b, and. If there is no lowercase English letter attached, it is one device. 4
Equipment classification code
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.