Some standard content:
Industry Standard of the People's Republic of China
International General Design System and Method
HG20559-93
Design Specifications for Pipeline Instrument Flowcharts I
I Appendix
Basic Unit Model of Pipeline Instrument Flowcharts
Published on August 3, 1994
1994—11 -- 01
Ministry of Chemical Industry of the People's Republic of China
Industry Standard of the People's Republic of China
Design Regulations for Piping Instrument Flowcharts—Appendix Basic Unit Models for Piping Instrument Flowcharts
HG20559—93
Editor: Process System Design Technology Center of the Ministry of Chemical Industry Approved by: Ministry of Chemical Industry
Implementation Date: November 1, 1994 Engineering Construction Standard Editing Center of the Ministry of Chemical Industry
1997 Beijing
Formulation Instructions
《Design Regulations for Process System of Chemical Plant》 (III) is a special chemical industry standard. 《Basic Unit Models for Piping Instrument Flowcharts》 is the appendix of the industry standard 《Design Regulations for Piping Instrument Flowcharts》 (HG20559-93), which collects 19 basic unit models. It is compiled based on the tasks of the Construction Coordination Department of the Ministry of Chemical Industry (91) Chemical Basic Standard No. 21 Document 《Design Basic Work Plan Project List》 No. 91-80, summarizing the engineering design experience at home and abroad.
《Chemical Plant Process System Engineering Design Regulations》 (III) was compiled by the Ministry of Chemical Industry in order to promote the international general design system and methods. The Ministry of Chemical Industry Process System Design Technology Center Station was responsible for organizing relevant units to compile it. The Ministry of Chemical Industry Process System Design Technology Center Station was the chief editor. The participating units include: China Huanqiu Chemical Engineering Company, China Tianchen Chemical Engineering Company, the Second Design Institute of the Ministry of Chemical Industry, the Third Design Institute of the Ministry of Chemical Industry, China Wuhuan Chemical Engineering Company, the Sixth Design Institute of the Ministry of Chemical Industry, Jilin Chemical Industry Company Design Institute, Shanghai Pharmaceutical Design Institute, Hunan Chemical Industry Design Institute and Sinopec Beijing Petrochemical Engineering Company.
Main editors:
Main reviewers of the Process System Design Technology Center of the Ministry of Chemical Industry:
China Huanqiu Chemical Engineering Company
China Wuhuan Chemical Engineering CompanybzxZ.net
Shanghai Pharmaceutical Design Institute
Gong Renwei and Feng Shuyuan of the Process System Design Technology Center of the Ministry of Chemical Industry
Tang Limin and Wang Qingyu
Wu Bingyong
Qian Mengge
Gong Renwei and Feng Shuyuan
As an appendix to the industry standard "Design Regulations for Piping and Instrument Flowcharts", the "Basic Unit Model of Piping and Instrument Flowcharts" is a technical regulation for designing process system equipment unit piping and instrument flowcharts. The content is mainly the basic unit model of chemical unit equipment and common material generation system equipment or distribution system equipment in chemical plants. The basic unit model is the abbreviation of the basic unit model of the piping and instrument flowchart (PI diagram). The basic unit model reflects the basic characteristics of chemical unit equipment and the basic requirements of the system professional for piping design and instrument control design. It is the basic data for system professionals to design PI diagrams. When used in engineering, it should be determined according to process and engineering requirements, relevant conditions and technological progress.
In the process of using this regulation, if there is a need for modification or supplement, please provide your opinions and relevant information to the Process System Design Technology Center of the Ministry of Chemical Industry (P.O. Box 9824, Beijing, Postal Code 100029) for reference in future revisions.
Total Table of Contents of the Process System Design Technology Center of the Ministry of Chemical Industry
HG20559-93 "Design Regulations for Pipeline Instrument Flowcharts" - Appendix "Basic Unit Model of Pipeline Instrument Flowcharts" "Basic Unit Model of Pipeline Boundary"
2 Scope of Application and Graphic Symbol Representation Method
3 Basic Unit Model
"Basic Unit Model of Flow Meter System and Control Valve Group" 1 Description·
2 Basic Unit Model of Flow Meter System
3 Basic Unit Model of Control Valve Group
"Basic Unit Model of Pump"
1 Description...
2 General Requirements for Pipeline Design·
3 General requirements for instrument control design
4 Basic unit model:
《Basic unit model of vacuum pump》
1 Description
2 General requirements for piping design
3 General requirements for instrument control design…..
4 Basic unit model·
《Basic unit model of chemical process compressor》1 Description
2 General requirements for piping design·
3 General requirements for instrument control design
4 Basic unit model
《Basic unit model of heat exchanger》
1 Description and general provisions
2 General requirements for piping design:
.(48)
(49)
(63)
(87)
(88)
3 General requirements for instrument control design
4 Basic unit model·
《Basic unit model of distillation tower system equipment》1 Description
2 General requirements for piping design
3 General requirements for instrument control design…·
4 Basic unit model of equipment
《Basic unit model of storage tank》
Gas storage tank
Liquefied gas storage Tank
Liquid storage tank
5 Exhaust and exhaust of containers and storage tanks
6 Setting of breathing valve
《Basic unit model of dust removal and separation equipment》1 Classification and scope
2 General requirements for pipeline design
3 General requirements for instrument control design
4 Basic unit model
《Basic unit model of filtration equipment》
1 Classification of filtration equipment and division of filtration system 2 General requirements for pipeline design
3 General requirements for instrument control design
4 Typical basic unit models of filtration equipment systems "Basic unit model of waste heat boiler"
1 Classification and circulation method
2 General requirements for pipeline design
3 General requirements for instrument control design
4 Basic unit model
"Basic unit model of steam system"
1 Steam system types and general design rules
2 Basic unit model of steam turbine system
(105)
(106)
(132)
(15 5)
3 Basic unit model of steam saturation system
4 Basic unit model of steam condensate recovery system5 Basic unit model of steam purge system
6 Steam fire extinguishing system
7 Appendix
《Basic unit model of fuel gas system equipment》1
Composition of fuel gas system
2 General requirements for pipeline design
3 General requirements for instrument control design,
4 Basic unit model
5 Typical pipeline instrument flow chart and its description《Fuel oil system Basic unit model of equipment》Composition of fuel oil system
2General requirements for piping design
3General requirements for instrument control design
Basic unit model
《Basic unit model of ammonia refrigeration system equipment》1 Explanation
General requirements for piping design...·
3General requirements for instrument control design
4 Basic unit model
《Basic unit model of air separation system equipment》1 Explanation
General requirements for piping design·
3 Instrument control design General requirements
4 Basic unit model
5 Appendix
《Basic unit model of heat transfer fluid heating system equipment》1 Overview
2 General requirements for piping design
3 General requirements for instrument control design
（221）
（246）
（255)
（257)
（268)
（306）
（309)
4 Basic unit model
《Factory air conditioning system equipment》 "Basic unit model of air and instrument air generating system equipment" 1 Overview
2 General requirements for piping design
3 General requirements for instrument control design
4 Basic unit model
"Basic unit model of temperature-controlled water generating system equipment" says
General requirements for piping design
General requirements for instrument control design
Basic unit model
(348)
(379)
(393)
(395)
(4 03)
（405）
Basic unit model of pipeline demarcation
Compiled by: Process System Design Technology Center of the Ministry of Chemical Industry Approved by: Ministry of Chemical Industry
Implementation date: November 1, 1994 Prepared by:
Feng Shuyuan of Process System Design Technology Center of the Ministry of Chemical Industry Reviewed by:
Gong Renwei of Process System Design Technology Center of the Ministry of Chemical Industry
1.0.1 The pipeline instrument flow chart (PI chart for short) compiled by the process system professional needs to indicate the pipeline demarcation on the chart. The content of this regulation is the division and marking method of several basic types of pipeline grade demarcation and pipeline thermal insulation and heat preservation demarcation (abbreviated as adiabatic demarcation).
1.0.2 The pipeline grade is determined by the pipeline material professional according to the working conditions (pressure, temperature, medium properties, etc.) and engineering requirements under the process operation state, and strives to achieve economic rationality. The pipeline grade reflects the pressure grade (nominal pressure) and material grade (material category) of the pipe selected in the engineering design. In a project, two pipes can be of the same material and different nominal pressures, or of the same nominal pressure and different materials. In this way, the pipe grade numbers of the two marked pipes are different. Only when the materials of the two pipes are the same and the nominal pressure values of the selected pipes are the same, the marked pipe grade numbers are the same. 1.0.3 Due to differences in working conditions (pressure, temperature, medium properties, etc.) in the piping system, the pressure grades and material types of the connected pipes are different, and the connected pipes need to be divided into pressure and material grades. When there are pipe connections of different pipe grades, the process system professional should indicate the boundary position with the pipe grade boundary symbol on the .PI diagram, and mark different pipe grades on the PI diagram according to the pipe grade table proposed by the pipe material professional, and fill in the pipe grade in the design documents such as the pipe naming table. 1.0.4 When the insulation and heat preservation of a pipeline or connected pipelines change, the PI diagram shall be divided by demarcation symbols and arrows at the place where the insulation and heat preservation of the pipeline changes, and the insulation and heat preservation codes shall be marked. 2.0.1 Scope of application
2 Scope of application and graphic symbol representation method
2.0.1.1 Pipeline grade marking of connecting pipelines between equipment on the PI diagram. 2.0.1.2 When different grades exist in the same pipeline or connected pipelines, determine the position and marking of the pipeline grade dividing point or the pipeline insulation and heat preservation dividing point. 2.0.1.3 The grade boundary position and marking of the upstream and downstream pipelines of the control valve, the inlet and outlet pipelines of the safety valve, the upstream and downstream pipelines of the steam trap, the pipelines connecting the static equipment and the rotating equipment, and the exhaust and drain pipes of the pipeline. 2.0.2 Graphic symbol representation method
The pipeline boundary symbol is represented by a thin line "". The PI diagram indicates the boundary position at the boundary, and marks different pipe grades or different pipe insulation and heat preservation codes. 3 Basic unit mode
3.0.1 Pipe grade boundary on PI diagram
3.0.1.1 For pipes connected to branches and main pipes or on the same pipe, due to the use of different materials, the pipe grade boundary should be indicated on the PI diagram.
(1) Above-ground and underground pipes
When above-ground and underground pipes are connected, the above-ground and underground pipes are made of different materials, such as cooling water pipes. Usually, the material grade of underground pipes is lower than that of above-ground pipes. The representation of pipe grade boundary is shown in Figure 3.0.1-1. The size of the pipe boundary position should be indicated on the PI diagram (this figure is 500 to 1000 mm above the ground), and this size should be determined by the project.
Aboveground pipeline
Aboveground pipeline grade
Underground pipeline grade
Underground pipeline
Figure 3.0.1-1 Pipeline grade boundary of aboveground and underground pipelines (2) Separator (recovering products from dusty air) Top outlet pipeline Separator feed and bottom product outlet pipeline; the material grade requirement is relatively high. The top outlet gas is used to recover by-products. The material grade of the pipeline can be lowered. However, in order to prevent rust from entering the product and causing product contamination, the connecting pipe section from the top outlet pipeline of the front separator to the rear separator should ensure a straight pipe height of 1000mm (to prevent parking and dumping) and use high-grade materials. The pipeline grade boundary of this pipeline is shown in Figure 3.0.1-2.2 The pipeline grade is determined by the pipeline material specialty according to the working conditions (pressure, temperature, medium properties, etc.) and engineering requirements under the process operation state, and strives to achieve economic rationality. The pipeline grade reflects the pressure grade (nominal pressure) and material grade (material category) of the pipe selected in the engineering design of the pipeline. In a project, two pipes can be of the same material and different nominal pressures, or of the same nominal pressure and different materials. In this way, the pipeline grade numbers of the two marked pipes are different. Only when the materials of the two pipes are the same and the nominal pressure values of the selected pipes are the same, the marked pipeline grade numbers are the same. 1.0.3 Due to the differences in working conditions (pressure, temperature, medium properties, etc.) in the pipe system, the pressure grades and material types of the connected pipes are different, and the connected pipes need to be divided into pressure and material grades. When there are pipe connections of different pipe grades, the process system specialty should indicate the demarcation position with the pipe grade demarcation symbol on the .PI diagram, and mark different pipe grades on the PI diagram according to the pipe grade table proposed by the pipe material specialty, and fill in the pipe grade in the design documents such as the pipe naming table. 1.0.4 When the insulation and heat preservation of a pipeline or connected pipelines change, the PI diagram shall be divided by demarcation symbols and arrows at the place where the insulation and heat preservation of the pipeline changes, and the insulation and heat preservation codes shall be marked. 2.0.1 Scope of application
2 Scope of application and graphic symbol representation method
2.0.1.1 Pipeline grade marking of connecting pipelines between equipment on the PI diagram. 2.0.1.2 When different grades exist in the same pipeline or connected pipelines, determine the location and marking of the pipeline grade dividing point or the pipeline insulation and heat preservation dividing point. 2.0.1.3 The grade boundary position and marking of the upstream and downstream pipelines of the control valve, the inlet and outlet pipelines of the safety valve, the upstream and downstream pipelines of the steam trap, the pipelines connecting the static equipment and the rotating equipment, and the exhaust and drain pipes of the pipeline. 2.0.2 Graphic symbol representation method
The pipeline boundary symbol is represented by a thin line "". The PI diagram indicates the boundary position at the boundary, and marks different pipe grades or different pipe insulation and heat preservation codes. 3 Basic unit mode
3.0.1 Pipe grade boundary on PI diagram
3.0.1.1 For pipes connected to branches and main pipes or on the same pipe, due to the use of different materials, the pipe grade boundary should be indicated on the PI diagram.
(1) Above-ground and underground pipes
When above-ground and underground pipes are connected, the above-ground and underground pipes are made of different materials, such as cooling water pipes. Usually, the material grade of underground pipes is lower than that of above-ground pipes. The representation of pipe grade boundary is shown in Figure 3.0.1-1. The size of the pipe boundary position should be indicated on the PI diagram (this figure is 500 to 1000 mm above the ground), and this size should be determined by the project.
Aboveground pipeline
Aboveground pipeline grade
Underground pipeline grade
Underground pipeline
Figure 3.0.1-1 Pipeline grade boundary of aboveground and underground pipelines (2) Separator (recovering products from dusty air) Top outlet pipeline Separator feed and bottom product outlet pipeline; the material grade requirement is relatively high. The top outlet gas is used to recover by-products. The material grade of the pipeline can be lowered. However, in order to prevent rust in the product and cause product pollution, the connecting pipe section from the top outlet pipeline of the front separator to the rear separator should ensure a straight pipe height of 1000mm (to prevent parking and dumping) and use high-grade materials. The pipeline grade boundary of this pipeline is shown in Figure 3.0.1-2.2 The pipeline grade is determined by the pipeline material specialty according to the working conditions (pressure, temperature, medium properties, etc.) and engineering requirements under the process operation state, and strives to achieve economic rationality. The pipeline grade reflects the pressure grade (nominal pressure) and material grade (material category) of the pipe selected in the engineering design of the pipeline. In a project, two pipes can be of the same material and different nominal pressures, or of the same nominal pressure and different materials. In this way, the pipeline grade numbers of the two marked pipes are different. Only when the materials of the two pipes are the same and the nominal pressure values of the selected pipes are the same, the marked pipeline grade numbers are the same. 1.0.3 Due to the differences in working conditions (pressure, temperature, medium properties, etc.) in the pipe system, the pressure grades and material types of the connected pipes are different, and the connected pipes need to be divided into pressure and material grades. When there are pipe connections of different pipe grades, the process system specialty should indicate the demarcation position with the pipe grade demarcation symbol on the .PI diagram, and mark different pipe grades on the PI diagram according to the pipe grade table proposed by the pipe material specialty, and fill in the pipe grade in the design documents such as the pipe naming table. 1.0.4 When the insulation and heat preservation of a pipeline or connected pipelines change, the PI diagram shall be divided by demarcation symbols and arrows at the place where the insulation and heat preservation of the pipeline changes, and the insulation and heat preservation codes shall be marked. 2.0.1 Scope of application
2 Scope of application and graphic symbol representation method
2.0.1.1 Pipeline grade marking of connecting pipelines between equipment on the PI diagram. 2.0.1.2 When different grades exist in the same pipeline or connected pipelines, determine the position and marking of the pipeline grade dividing point or the pipeline insulation and heat preservation dividing point. 2.0.1.3 The grade boundary position and marking of the upstream and downstream pipelines of the control valve, the inlet and outlet pipelines of the safety valve, the upstream and downstream pipelines of the steam trap, the pipelines connecting the static equipment and the rotating equipment, and the exhaust and drain pipes of the pipeline. 2.0.2 Graphic symbol representation method
The pipeline boundary symbol is represented by a thin line "". The PI diagram indicates the boundary position at the boundary, and marks different pipe grades or different pipe insulation and heat preservation codes. 3 Basic unit mode
3.0.1 Pipe grade boundary on PI diagram
3.0.1.1 For pipes connected to branches and main pipes or on the same pipe, due to the use of different materials, the pipe grade boundary should be indicated on the PI diagram.
(1) Above-ground and underground pipes
When above-ground and underground pipes are connected, the above-ground and underground pipes are made of different materials, such as cooling water pipes. Usually, the material grade of underground pipes is lower than that of above-ground pipes. The representation of pipe grade boundary is shown in Figure 3.0.1-1. The size of the pipe boundary position should be indicated on the PI diagram (this figure is 500 to 1000 mm above the ground), and this size should be determined by the project.
Aboveground pipeline
Aboveground pipeline grade
Underground pipeline grade
Underground pipeline
Figure 3.0.1-1 Pipeline grade boundary of aboveground and underground pipelines (2) Separator (recovering products from dusty air) Top outlet pipeline Separator feed and bottom product outlet pipeline; the material grade requirement is relatively high. The top outlet gas is used to recover by-products. The material grade of the pipeline can be lowered. However, in order to prevent rust from entering the product and causing product contamination, the connecting pipe section from the top outlet pipeline of the front separator to the rear separator should ensure a straight pipe height of 1000mm (to prevent parking and dumping) and use high-grade materials. The pipeline grade boundary of this pipeline is shown in Figure 3.0.1-2.
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.