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This standard specifies the classification, technical requirements, inspection rules, marking, packaging, transportation and storage of static mixers. This standard is applicable to mixers with a nominal pipe diameter of DN 10~1000mm and a nominal pressure of PN 0.25, 0.6, 1.0, 1.6, 2.5, 4.0, 6.4, 10.0, 16.0MPa. JB/T 7660-1995 Static mixer JB/T7660-1995 Standard download decompression password: www.bzxz.net
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T7660-95
Static mixer
Published on June 16, 1995
Ministry of Machinery Industry of the People's Republic of China
Implemented on July 1, 1996
Mechanical Industry Standard of the People's Republic of China
Static mixer
Subject content and scope of application
JB/T 7660-95
This standard specifies the classification, technical requirements, inspection rules, marking, packaging, transportation and storage of static mixers (hereinafter referred to as mixers).
This standard applies to mixers with a nominal pipe diameter of DN of 10~1000mm and a nominal pressure PN of 0.25.0.6, 1.0, 1.6.2.5.4.0, 6.4, 10.0, 16.0MPa.
Quoted standards
GB1184
GB1220
GB/T 1804
GB2100
GB 2270
GB/T 4237
GB4879
GB 4892
GB6388
GB 8163
GB9115.6~9115.11
GB9116.4~9116.7
GB 9124
GB9125
GB11352
HG5010
HG5016
3 Classification
3.1 Type
Packaging, storage and transportation pictorial symbols
Technical conditions for high-quality carbon cable structural steel
Carbon structural steel
Provisions for shape and position tolerances of hot-rolled thin steel plates and strips of carbon structural steel and low-alloy structural steel without tolerances Stainless steel bars
General tolerances
Unindicated tolerances for linear dimensions
Technical conditions for stainless acid-resistant steel castings
Stainless steel seamless steel pipes
Stainless steel cold-rolled steel plates
Stainless steel hot-rolled steel plates
Rust-proof packaging
Hard rectangular transport bag Size series
Transport packaging delivery and receipt marks
Seamless steel pipe for conveying fluids
Convex face welding steel pipe flange
Convex face flat welding steel pipe flange with neck
Butt welding end of steel pipe flange
Technical conditions for copper pipe flanges
Casting carbon steel parts for general engineering
Slip welding flange
Convex and concave face welding flange
According to the different structures of the mixing unit in the mixer, it is divided into five types:SV type mixer:
Approved by the Ministry of Machinery Industry on June 16, 1995
Implementation on July 1, 1996
SX type mixer:
SL type mixer:
SH type mixer:
SK type mixer.
3.2 Model and marking
3.2.1 Marking method
The model of general mixer should comply with the following provisions: JB/T7660-95
00-0/0-0-00
3.2.2 Marking example
Standard number, mm
Mixer length
Nominal pressure, MPa
Nominal diameter, mm
Unit hydraulic diameter, mm
Unit geometry: V, X, L, H, K
Mixer code ：S
Nominal diameter 25mm, nominal pressure 1.6MPa, hydraulic diameter 2.3mm, length 500mm SV-2.3/25-1.6-500JB/T766095
3.3 Basic parameters and dimensions
3.3.1 SV mixer structure, basic parameters and main dimensions shall comply with the provisions of Figure 1 and Table 1, 2
a SV filter general diagram
JB/T7660-95
b V mixing unit stereogramwwW.bzxz.Net
1-flange: 2-cellar, 3-filter unit, 4-unit one, 15-unit two, 6-unit three, 7-unit four, 8-unit five, 9-unit six, 10-unit seven, 11-unit eight, 12-unit nine, 13-unit ten Figure 1 SV type mixer
Table 1 Basic parameters and main dimensions of SV type mixer
SV-2.3/20
SV-2.3/25
SV-3.5/32
SV-3.5/40
SV-3. 5/50
SV-5/80
SV-5/100
SV-5~7/150
SV-5~20/200
SV-5~30/300
SV-7~30/500
SV-7~30/1000
Note: The nominal pressure is selected by the user. The nominal diameter
Hydraulic diameter
3.3.2 The structural type, basic parameters and main dimensions of SX mixer shall comply with the requirements of Figure 2 and Table 2. Length
JB/T7660-95
SX type mixer general diagram
bx child mixing unit stereogram
1-flange, 2-pipe, 3-combination unit: 4-unit one: 5-unit two, 6-unit three; 7-unit four: 8-unit five: 9-unit six; 10-unit seven; 11-unit eight: 12-unit nine: 13-unit ten Figure 2SX type mixer Table 2 Basic parameters and main dimensions of SX mixer SX-12.5/50 SX-20/80 SX-25/100 SX-37.5/150 SX-5G/200 SX-75/300 SX-125/500 SX-256/1000 tt||Note: The nominal pressure is selected by the user, the nominal diameter
hydraulic diameter
JB/T766095
3.3.3SL type mixer structure type. Basic parameters and main dimensions should comply with the provisions of National 3 and Table 3. SL type filter assembly general diagram
bL type mixing unit stereogram
1-flange, 2-pipe, 3-mixing unit, 4-unit plate; 5-unit plate 2, 6- Unit three; 7~Unit four Figure 3 SL type mixer
Table 3 Basic parameters and main dimensions of SL type mixer
SL-12.5/25
ST-25/50
SL40/80
SL-50/100
SL100/200
SL-250/500
Note: The nominal pressure is selected by the user. Nominal diameter
Hydraulic diameter
3.3.4 The structural type, basic parameters and main dimensions of SH type mixer shall conform to the requirements of Figure 4 and Table 4. Length
SH-3/15
SH-4. 5/20
SH-7/32
SH-13/50
SH-19/80
SH-24/100
SH-49/200
SH-74/300
SH-124/500
JB/T 766095
a SH type mixer general diagram
b 3D diagram of H type mixing unit
1-flange, 2-pipe, 3~mixing unit: 4-spiral blade 1, 5-spiral blade 2Figure 4 SH type condenser
Basic parameters and main dimensions of SH type mixerTable 4
Nominal diameter
Note: Nominal pressure is selected by the user, hydraulic diameter
JB/T7660—95
3.3. 5SK type mixer structure, basic parameters and main dimensions shall comply with the provisions of Figure 5 and Table 5. SK type mixer general diagram
bK type mixing unit stereogram
1--flange: 2-pipe + 3-mixing unit Figure 5SK type mixer
Table 5SK type mixer basic parameters and main dimensions
SK-5/10
SK-7.5/15
SK-10/20
SK-12.5/25
SK-20/40
SK-25/50
Nominal diameter
Hydraulic diameter
SK-40/80
SK-50/100
SK-100/200
SK-150/300
SK-250/500
Note: The nominal pressure is selected by the user. 3.4 Other size requirements for mixer
JB/T7660—95
Continued Table 5
Nominal diameter
Hydraulic diameter
3.4.1 The dimensions and tolerances of flat welding flanges shall comply with the provisions of GB9116.4~9116.7 and HG5010. The dimensions and tolerances of the butt-weld flanges shall comply with the provisions of GB9115.6~9115.11 and HG5016. 3.4.2
The dimensions of the butt-weld flanges shall comply with the provisions of GB9124: The shape and dimensions of the butt-weld groove of the mixing pipe shall comply with the provisions of the flange welding end groove in Chapter 2 of GB9124. The verticality tolerance value of the flange surface and the axis of the mixing pipe shall be selected according to the 12th level in GB1184. 3.4.6
The limit deviation of the mixer length L shall comply with the provisions of Class C in GB/T1804. 4 Technical requirements
4.1 Materials
4.1.1 The mixer pipe material is made of carbon structural steel, high-quality carbon steel, stainless steel and other bars, pipes or rolled plates, and its chemical composition and mechanical properties shall comply with the provisions of GB700, GB699, GB1220. GB2270, GB/T3280. GB/T4237 and GB8163. 4.1.2 The flange material is made of carbon cable structural steel, high-quality carbon cable steel, stainless steel and other bars, plates and cast carbon steel, stainless acid-resistant steel castings, and its chemical composition and mechanical properties shall comply with the provisions of GB700, GB699, GB1220. GB/T3280, GB/T4237, GB11352 and GB2100.
4.1.3 Unit materials: Carbon structural steel, stainless steel and titanium. Except for titanium, the chemical composition and mechanical properties of the relevant materials shall comply with the provisions of GB700, GB1220, GB/T3280, GB/T4237 and GB912. 4.2 Requirements for main parts and combination of mixing units: Flange manufacturing technical conditions shall comply with the provisions of GB9125. 4.2.1
If there are no special requirements, when the nominal diameter DN>350mm, the mixing tube can be rolled from sheet metal. Mixing unit
4.2.3.1 V-type unit wave effect plate is made of thin steel plate or steel strip after rolling and assembled. Before assembly, oil stains, edge pressing and burrs are removed. There are no defects such as bumps and curling. After assembly, the ovality is not more than 0.5% of the diameter, the horizontal deviation is 2mm, and the adjacent units are crossed at 90°. 4.2.3.2X-type units should be welded with unit pieces that cross at 90°, and pickled and passivated after welding. When combined, the adjacent units should cross at 90°.
4.2.3.3L-type units should be welded with unit pieces that cross at 60°, and pickled and purified after welding. When combined, the adjacent units should cross at 90°.
4.2.3.4K-type units should be welded with spiral pieces that twist 180° left and right, and the surface of the units should be treated with latent light. 4.2.3.5H-type units should be composed of channel units, and distribution chambers are provided between the units. The double channels are filled with spiral pieces that twist 180° left and right. The spiral pieces are polished.
5 Test methods
5.1 After the mixer is assembled, a water pressure test is carried out. The test pressure is 1.25 times the nominal pressure. The pressure is maintained for 10 minutes, and the leakage is checked.
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