HG/T 20572-1995 Unified regulations on the depth of content of water supply and drainage design construction drawings for chemical enterprises
Some standard content:
Document of the Ministry of Chemical Industry,
Chemical Construction Development (1995) No. 649
Notice on the issuance of two industry standards, including "Standards for the Unification of Content Depth of Water Supply and Drainage Design and Implementation Drawings for Chemical Enterprises"
To the chemical industry departments (bureaus, companies) of all provinces, autonomous regions, municipalities directly under the Central Government, and cities with independent planning status, and all relevant design units: "Standards for the Unification of Content Depth of Water Supply and Drainage Design and Implementation Drawings for Chemical Enterprises" and "General Drawings for L.60 Fan Countercurrent Cooling Towers" organized and formulated by the Water Supply and Drainage Design and Technology Center of our Ministry have been reviewed and approved as recommended industry standards. The numbers are detailed in the attached table and will be implemented from November 1, 1995. The Water Supply and Drainage Design and Technology Center of our Ministry is responsible for the management of this standard; the Engineering Construction Standard Editing Center of our Ministry is responsible for publishing and issuing it.
Appendix: Numbering of two industry standards for water supply and drainage design Ministry of Chemical Industry
August 28, 1995
Industry Standard of the People's Republic of China
Construction drawings of water supply and drainage design for chemical enterprises
Content depth and standardization provisions
Editing unit: Second Design Institute of Ministry of Chemical Industry
Water Supply and Drainage Design Technology Center of Ministry of Chemical Industry
Approving department: Chemical Industry
Implementation date: January 2, 1995
Engineering Construction Standard Compilation Center of Ministry of Chemical Industry
Appendix:
Numbering of two industry standards for water supply and drainage design Standard name
Editing unit
Standard number
Second Industry Standard for Water Supply and Drainage Design for Chemical Enterprises. ：Design Institute 1IG/T20572-95 Unified regulations on the depth of construction drawings Training center station for water supply and drainage design 2L60 type fan countercurrent cooling China Wuhuan Chemical Processing Company HG/T21582·95 General drawings of towers
General regulations
Regulations on the composition of construction drawings, depth of condition drawings, drawing and table numbers and drawing countersignatures Regulations on the depth of construction drawings
Regulations on the names, codes and legends of commonly used water supply and drainage pipelines and their accessories, equipment, machinery and automatic control instruments
Regulations on the compilation of codes and position numbers of equipment and structures 6
Appendix A
Attachment 1|| tt||Surface plan of ground water intake structure
Attached Figure 2
Attached Figure 3
Attached Figure 4
Attached Figure 5
Attached Figure 6
Attached Figure 8,
Attached Figure 9
Attached Figure 10
Attached Figure 11
Attached Figure 12
Attached Figure 13
Attached Figure 14
Attached Figure 15
Attached Figure 16.
Attached Figure 17
Attached Figure 18
Attached Figure 19
Attached Figure 20
Attached Figure 21
Attached Figure 22
Attached Figure 23
Flow chart and elevation chart of control points in water purification zoneFlow chart of control points in sewage treatment zone
Elevation chart of sewage treatment
Flow chart of control points in circulating water and water quality treatment zoneWater balance chart
Plant layout of water supply and drainage pipelines in the factory
Plant elevation chart of pipelines with water supply and drainage belts in the factoryNode chart of fire-fighting water supply pipelines in production
Drainage inspection and table
Plant production water supply pipeline longitudinal section chart
Plant drainage pipeline longitudinal section chart
Plant Guangwai water supply pipeline layout chart
Guangwai water supply pipeline longitudinal section Figure
Overall plan of water source well group
Deep well pump house plan
Indoor water supply and drainage plan and system diagram
Circulating water pump house plan
Circulating water pump house section·
Bypass filter pipe opening orientation diagram·
Water supply well table·
Equipment list
Material list
Article explanation
(64)
(74)
1.0.1 In order to ensure the quality of drawings, meet construction requirements and unify the content and depth of the water supply and drainage professional construction design of chemical enterprises, this regulation is specially formulated. 1.0.2 This regulation applies to the general water supply and drainage construction drawings of new construction, reconstruction and expansion of chemical enterprises. For earthquake, collapsible loess, soil slide, frozen areas, and construction drawings compiled for foreign-related projects, in addition to complying with these regulations, the regulations of relevant departments should also be followed. 1.0.3 The relevant content and depth of these regulations are applicable to the current design system. 2.1
2＇General provisions
Names, symbols and units of commonly used quantities for water supply and drainage. For details, see Table 1 for the names, symbols and units of commonly used quantities for water supply and drainage. Legal units
Name of the landscape
Nominal diameter
Outer diameter × wall thickness
Inner diameter × wall thickness
Volume
Nominal pressure
Volume flow
Quantity symbol
Unit symbol
me, 1()
m)/h, L/s
Unit Chinese symbol
For low-pressure fluid transportation||tt| |Galvanized and non-galvanized welded steel
mm, meter
meter, liter
kilogram (public hall)
m/piece, liter/second
pipe, cast iron pipe, composite pipe,
valves, pipe fittings
used for seamless steel pipe, welded
steel pipe (straight seam or spiral seam
electrically welded steel pipe), stainless steel
pipe, polynitrile and polypropylene
pipe, etc.
used for glass fiber reinforced plastic pipe, soft
acid-resistant ceramic pipe, clay pipe, reinforced concrete pipe,
rubber pipe, soft plastic pipe
disk name
power.
Hydraulic radius
Celsius temperature
Thermodynamic overflow
Dry bulb temperature
Wet bulb temperature
Relative humidity
Water density
River strength
Dairy current period
Runoff coefficient
Fullness
Slope··degree·
Hydrogen ion concentration index
Friction resistance coefficient
Local resistance coefficient
Symbol
A, F, f
Legal unit
Unit symbol
m*/(m*· h)
m*/hm*/s
L/(m*. s)
Unit Chinese symbol
m/s
rev/min
kilowatt, watt
degrees Celsius·
degrees Celsius
Expressed as percentage
m/m, hour)
m*/hour, m/s
liter/(m·second)
Expressed as decimal
Continued Table 1
L/( ha·s)
L/(ton·second)
Expressed as a decimal
Expressed as a decimal
Used in open nests and pools
Used in open channels and pools
Expressed as a decimal
Expressed as a decimal
Name of quantity
Flushing intensity
Suspended solids
Five-day biochemical requirement Oxygen content
Chemical oxygen demand
Oxygen consumption
Dissolved fluorine
Theoretical oxygen content
Total oxygen content
Organic carbon
Total organic carbon
Time-carrying oxygen content
Total solids
Total suspended solids
Dissolved solids
Suspended solids concentration of mixed liquor
Volatilization of mixed liquor Item
Floating solids concentration
Return sludge concentration
Volatile floating solids
Sludge settling ratio
Sludge index
Sludge volume index
Quantity symbol
Legal unit
Unit symbol
m*/(m*-.h)
Lf(mt+s)
mg/L, g /L
.imng/L
·mg/L
Unit Chinese symbol
m/(m,h)
L(m·s)
milligram/L, g/L
milligram/L, g/L
milligram/L
milligram/L
g/L
milligram/L
milligram/L
milligram/L
g/L
milligram/L
g/L
g/L
g/L
milligram/L
g/L
|mg/L
g/L
mg/L
volume percentage
L/g
Table 1 continued
Expressed as percentage
Name of quantity
Sludge load
Volume load
Sludge age
Oxygen utilization rate
Total hardness
Permanent hardness
Replacement hardness
Total alkalinity
Total salt content
Symbol of quantity
Legal unit
Unit symbolbzxZ.net
kg/(kg · d)
kg/(m*·d)
mmol/L
mmot/L
mmot/L
mmoi/L
Unit Chinese symbol
kilogram/(kilogram·day)
Continued Table 1
[BOD,Jkg/((ML.VSS,Jkg*d)
dry grams per meter, month)
(BOD,Jkg/(ms . d)
Expressed as percentage
mmol/L
mmol/L
mmol/L
mmol/L
mmol/L
mg/L
If the above names are inadequate, they can be supplemented in the design, but they must be noted in the drawings, tables or calculation books.
Measurement units
The names, symbols and unit symbols of measurement units shall all be implemented in accordance with the provisions of the "Legal Measurement Units of the People's Republic of China".
2.3 Dimensions, elevations, and coordinate markings
2.3.1 Dimension markings
Outdoor pipe length, control scale Inches and coordinates are in meters, and pipe diameters are in millimeters; indoor pipe lengths, control dimensions, and pipe diameters are all in millimeters.
2.3.2 Marking of elevations
Mark the center of the pressure pipe, and mark the bottom of the pipe for open ditches, concealed ditches, trenches, and gravity pipes. Indoor pipes are marked with relative elevations: outdoor pipes are marked with absolute elevations or relative elevations, but the absolute elevation relative to ±0.00m should be indicated. All elevations are in meters. 2.3.3
Precision of pipe elevations, lengths, and coordinates
The precision of outdoor pipe elevations and pipe lengths is maintained to two decimal places, and the coordinates are maintained to three decimal places. The elevation of the centerline of indoor and outdoor equipment is maintained to three decimal places. 2.4 Names, code legends and well and node numbers of water supply, drainage and other media pipelines inside and outside the factory
2.4.1 The codes, names and legends of water supply, drainage and other media pipelines, pipeline accessories, wells and valves inside and outside the factory are detailed in Table 4 and Table 5.
2.4.2 Wells and node numbers of water supply pressure pipelines inside and outside the factory The numbering of valve wells on water supply pressure pipelines inside and outside the factory is expressed by nJ-m or nx-m, where n is the pipeline category number and m is the sequence number.
As shown in the figure:
Point (valve well);
As shown in the figure:
The first node (valve well), and so on. 2J1 in the middle is the first node on the production water supply pipeline. 2J 2
in the middle is the 1X-1 in the circulating cooling water supply pipeline. 1X2
in the middle is the tees, crosses and elbows on the pipeline. The nodes need to be numbered, and are still represented by nj·=m or nX-m, where n is the pipeline category number and m is the node sequence number. For example:
point (tee), and so on. 2J-2 in the middle is the second node on the production water supply pipeline. The node (valve well) on the raw water supply pipe in Guang is, if the water source is outside the factory, its numbering sequence is renumbered from the boundary between inside and outside the factory, first the line and then the branch line, and the numbering can be interrupted but should not be repeated. 2.4.3 Numbering of inspection wells and control valve wells on gravity drainage pipes inside and outside the factory. The numbering of inspection wells on gravity drainage pipes inside and outside the factory is represented by nP-m, where n is the pipeline category number and m is the sequence number.
and so on.
. In 2P1, it is the No. 1 inspection well on the production sewage pipeline. The well numbering sequence starts from the beginning of the drainage, first the main line and then the branch line. The numbering of the wells on the drainage pipeline outside the factory is renumbered from the boundary between the inside and outside of the factory. The numbering can be intermittent but should not be repeated. If a control valve is set on the drainage pipeline, the numbering method of the wells is still the same as the drainage inspection wells, but the valve should be indicated in the well.
Numbering of fire hydrants (wells)
The numbering of fire hydrants (wells) is represented by Hm, H is the code of the fire hydrant (well), and m is the sequence number. For example:
O-- H5 and 6J1 are the fire hydrants (wells) numbered 5 and No. 1 node (valve well) on the production and living fire water supply H5
pipeline: The rest is analogous: The numbering sequence of the wells starts from the beginning of the water supply, first the main line and then the branch line. 2.5 Specifications of water supply and drainage pipe accessories
2.5.1.·Marking of welded steel pipe accessories
For example, the welded tee is marked as: DN300/200, the left side of the slash is the large pipe diameter and the right side is the small pipe diameter. For example, the welded reducer is marked as: DN350×200, the large pipe diameter is in front and the small pipe diameter is in the back. 2.5.2 Marking of cast iron pipe accessories
The cast iron pipe fittings should indicate the name and diameter of the plate, socket and plug. The diameter symbol should be in the front. The order of the socket or plug depends on the direction of water flow.
For example, the two-spigot-one-plate tee is marked as: DN500/300DN300
Direction of water flow
The socket and spigot reducer is marked as: DN400×200Direction of water flow→
Drawing format specifications and proportions
For detailed specifications of the drawing format, please refer to Table 2 and Figure 1.2 Numbering of wells and nodes of water supply pressure pipelines inside and outside the factory The numbering of valve wells on water supply pressure pipelines inside and outside the factory is expressed by nJ-m or nx-m, where n is the pipeline category number and m is the sequence number.
As shown in the figure:
Point (valve well);
As shown in the figure:
The first node (valve well), and so on. 2J1 is the first node on the production water supply pipeline 2J 2
In 1X-1, it is the 1X2
Nodes such as tees, crosses and elbows on the circulating cooling water supply pipeline need to be numbered, still expressed by nj·=m or nX-m, where n is the pipeline category number and m is the sequence number of the nodes. For example:
Point (tee), and so on. 2J-2 in
is the second node (valve well) on the raw water supply pipe in the production water supply pipeline. If the water source is outside the factory, its numbering sequence will be renumbered from the boundary between inside and outside the factory, first the main line and then the branch line. The numbering can be discontinuous but should not be repeated. 2.4.3 Numbering of inspection wells and control valve wells on gravity drainage pipes inside and outside the factory The numbering of inspection wells on gravity drainage pipes inside and outside the factory is represented by nP-m, n is the pipeline category number, and m is the sequence number.
and so on. 2P1 in
is the first inspection well on the production sewage pipeline. The numbering sequence of the wells starts from the beginning of the drainage, first the main line and then the branch line. The numbering of the wells on the drainage pipes outside the factory is renumbered from the boundary between inside and outside the factory. The numbering can be discontinuous but should not be repeated. If a control valve is set on the drainage pipe, the numbering method of the wells is still the same as the drainage inspection well, but the valve should be indicated in the well.
Numbering of fire hydrants (wells)
Numbering of fire hydrants (wells) is represented by Hm, where H is the code of fire hydrants (wells) and m is the sequence number. For example:
O--H5, 6J1 are fire hydrants (wells) numbered 5 and No. 1 node (valve well) on the H5
pipeline for fire fighting water supply for production and life: and the rest are analogous: and the sequence of numbers is compiled from the beginning of the water supply, first the main line and then the branch line. 2.5 Specification marking of water supply and drainage pipe accessories
2.5.1.·Marking of welded steel pipe accessories
For example, the welded tee is marked as: DN300/200, the left side of the slash is the large pipe diameter: the right side is the small pipe diameter. For example, the welded reducer is marked as: DN350×200, the large pipe diameter is in front; the small pipe diameter is in the back. 2.5.2 Marking of cast iron pipe accessories
Cast iron pipe fittings should indicate the name and diameter of the coil, socket and plug. The diameter symbol should be in the front. The order of the socket or plug depends on the water flow direction.
For example, the two-socket-one-coil tee is marked as: DN500/300DN300
Water flow direction
The socket and spigot reducer is marked as: DN400×200Water flow direction→
Drawing format specifications and proportions
For detailed drawing format specifications, please refer to Table 2 and Figure 1.2 Numbering of wells and nodes of water supply pressure pipelines inside and outside the factory The numbering of valve wells on water supply pressure pipelines inside and outside the factory is expressed by nJ-m or nx-m, where n is the pipeline category number and m is the sequence number.
As shown in the figure:
Point (valve well);
As shown in the figure:
The first node (valve well), and so on. 2J1 is the first node on the production water supply pipeline 2J 2
In 1X-1, it is the 1X2
Nodes such as tees, crosses and elbows on the circulating cooling water supply pipeline need to be numbered, still expressed by nj·=m or nX-m, where n is the pipeline category number and m is the sequence number of the nodes. For example:
Point (tee), and so on. 2J-2 in
is the second node (valve well) on the raw water supply pipe in the production water supply pipeline. If the water source is outside the factory, its numbering sequence will be renumbered from the boundary between inside and outside the factory, first the main line and then the branch line. The numbering can be discontinuous but should not be repeated. 2.4.3 Numbering of inspection wells and control valve wells on gravity drainage pipes inside and outside the factory The numbering of inspection wells on gravity drainage pipes inside and outside the factory is represented by nP-m, n is the pipeline category number, and m is the sequence number.
and so on. 2P1 in
is the first inspection well on the production sewage pipeline. The numbering sequence of the wells starts from the beginning of the drainage, first the main line and then the branch line. The numbering of the wells on the drainage pipes outside the factory is renumbered from the boundary between inside and outside the factory. The numbering can be discontinuous but should not be repeated. If a control valve is set on the drainage pipe, the numbering method of the wells is still the same as the drainage inspection well, but the valve should be indicated in the well.
Numbering of fire hydrants (wells)
Numbering of fire hydrants (wells) is represented by Hm, where H is the code of fire hydrants (wells) and m is the sequence number. For example:
O--H5, 6J1 are fire hydrants (wells) numbered 5 and No. 1 node (valve well) on the H5
pipeline for fire fighting water supply for production and life: and the rest are analogous: and the sequence of numbers is compiled from the beginning of the water supply, first the main line and then the branch line. 2.5 Specification marking of water supply and drainage pipe accessories
2.5.1.·Marking of welded steel pipe accessories
For example, the welded tee is marked as: DN300/200, the left side of the slash is the large pipe diameter: the right side is the small pipe diameter. For example, the welded reducer is marked as: DN350×200, the large pipe diameter is in front; the small pipe diameter is in the back. 2.5.2 Marking of cast iron pipe accessories
Cast iron pipe fittings should indicate the name and diameter of the coil, socket and plug. The diameter symbol should be in the front. The order of the socket or plug depends on the water flow direction.
For example, the two-socket-one-coil tee is marked as: DN500/300DN300
Water flow direction
The socket and spigot reducer is marked as: DN400×200Water flow direction→
Drawing format specifications and proportions
For detailed drawing format specifications, please refer to Table 2 and Figure 1.
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