JB/T 8471-1996 Technical requirements and acceptance specifications for bag filter installation
Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T8471—96
Bag Dust Collector Installation
Technical Requirements and Acceptance Specifications
1996-09-03 Issued
Ministry of Machinery Industry of the People's Republic of China
1997-07-01 Implementation
JB/T8471-96
1 Scope
2 Reference Standards
3 Definition
4 Technical Requirements for Installation
Construction Safety Technology
6 Installation Acceptance Specifications
7 Performance Inspection
Appendix A (Appendix to the Standard)
Appendix B (Appendix to the Standard)||tt ||Appendix C (Appendix of Standard)
Appendix D (Appendix of Suggestion)
Appendix E (Appendix of Suggestion)
Load and safe lifting
Angle, steel rope, tonnage
Shackle type and safe use load tableLifting lug and lifting lug specificationUse load table
Theoretical calculation value of filter bag installation tension force
Shapes of various self-made clamps used in installation and construction2
JB/T8471-96
This standard specifies the inspection items of bag dust collector after installation on site according to GB671986 "Classification and Specification Performance Expression Method of Bag Dust Collector" and GB1213889 "Performance Test Expression Method of Bag Dust Collector". Appendix A, Appendix B and Appendix C of this standard are appendices of the standard. Appendix D and Appendix E of this standard are appendices of suggestion. This standard is proposed and managed by the Standardization Technical Committee of Mechanical Dust Removal and Harmful Gas Treatment Equipment of the Ministry of Machinery Industry. The drafting units of this standard are Chongqing Environmental Protection Machinery Factory and Hubei Dust Removal Equipment Factory. The main drafters of this standard are Wang Guorong and Zhang Shiping. 1 Scope
Standards of the Machinery Industry of the People's Republic of China
Bag Dust Collector Installation
Technical Requirements and Acceptance Specifications
JB/T8471-96
This standard specifies the terminology definitions, technical requirements, construction safety technology, installation acceptance specifications and performance inspections for bag dust collector installation. This standard applies to the installation and construction of bag dust collectors on site. Cited Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GBJ23582
GB 786.193
GB/T180492
GB 289488
GB 3787-93
GB 4053.1—93
GB 4053.293
GB 40 53.393 | | tt | 651486
GB 6527.286
GB671986
GB 6988-86
GB 7059.1—86
GB 7059.286
GB 7059.386
GB 7093-88
GB9448—88
GB10609-89Www.bzxZ.net
Approved by the Ministry of Machinery Industry on September 3, 1996
Industrial Pipeline Construction and Acceptance Specification Metal Pipeline Part Hydraulic and Pneumatic Graphic Symbols
General Tolerance, Safety Symbols for Linear Dimensions without Indicative Tolerance
Safety Technical Regulations for the Management, Use, Inspection and Repair of Handheld Electric Tools Safety Voltage
Fixed Steel Straight Ladder
Fixed Steel Inclined Ladder
Fixed Industrial Guardrails
Fixed Industrial Steel Platforms
Classification of Enclosure Protection Grades
Mechanical Drawing
Graphic Symbols for Electrical Diagrams
Graphic symbols for electrical equipment
Safety net
Safety belt
Safety regulations for painting workPainting process safetyGuidelines for the use of safety colors
Classification and specification of bag dust collectorsPerformance representation methodsElectrical drawing
Safety standard for portable wooden ladders
Safety standard for portable wooden folding ladders
Safety standard for portable light metal folding ladders
Rules for the representation of graphic symbols
Welding and cutting safety
Technical drawing
Implementation on July 1, 1997
GB1213889
GB12625—90
GB/T14689~1469293
GB 5020492
GB5020592
JB5911—91
JB/T 591791
JB/T5304692
JC/T584-95
3 Definition
3.1 Bag dust collector
JB/T8471-96
Performance test method of bag dust collector
Technical conditions for filter media and filter bags for bag dust collector Technical drawing
Concrete structure engineering construction and acceptance specification Steel structure engineering construction and acceptance specification
Technical requirements for welding parts of electrostatic precipitator
Technical conditions for filter bag frame for bag dust collector Supplementary provisions for dust collector drawing
Glass fiber filter bag
Equipment that uses filter medium to make bag-shaped or simple filter elements to capture solid particles in dust-laden gas 3.2
Use site
The final use place of the dust collector.
3.3 Installation of dust collector
Assemble the parts, components and components and install the whole machine at the site of use. 4 Technical requirements for installation
4.1 Technical documents and drawings for installation
4.1.1 When installing the dust collector, there should be installation technical documents, installation drawings and a detailed list of the goods list of the dust collector that has been delivered. 4.1.2 Technical documents should include a list of materials, a dust collector product certificate, technical specifications for mechanical structure and electrical, instrumentation, and filter bag installation, a packing list, inspection certificates for important accessories and purchased parts, and operating instructions, etc. 4.1.3 Installation drawings should comply with the provisions of standards such as technical drawings, mechanical drawings, electrical drawings, and supplementary provisions for dust collector drawings. 4.1.4 The installation unit should prepare relevant technical documents such as installation implementation details, construction technical flow charts, and construction safety technical regulations in accordance with 4.1.1, 4.1.2, and 4.1.3.
4.2 Cleaning, inspection and maintenance of dust collector before installation 4.2.1 Cleaning, inspection and maintenance of dust collector before installation should be completed by the installation unit after the installation task is issued and before installation construction. 4.2.2 Check the parts according to the delivery list and installation drawing list. The damaged parts should be handled in time and replaced. 4.2.3 All parts and components of the dust collector that need to operate and slide should be cleaned, lubricated and protected. 4.2.4 Structural parts that are deformed due to transportation and storage should be corrected and repainted with anti-rust paint. The original markings should be restored after maintenance. 4.2.5 The size and position of the equipment foundation should be checked according to Table 1. Items that do not meet the requirements should be reworked. The foundation load strength shall be in accordance with Chapter 8 of GB5020492.
4.2.6 Electrical equipment and instruments with specific requirements can be negotiated by the supply and demand parties for inspection and maintenance. 4.3 Installation and construction of dust collector
4.3.1 The installation and construction of dust collector shall comply with the provisions of 4.1 of this standard and GB50205. 4.3.2 During the installation and construction of dust collector, if necessary, self-made clamps can be used for construction with reference to Appendix E. After the construction is completed, they should be removed in time without leaving any traces.
4.3.3 Welding construction shall comply with the provisions of JB5911. 4.3.4 The limit deviation of dust collector installation is shown in Table 2, and the limit deviation of pipeline installation is shown in Table 3. 4.3.5 When weldments must be welded in pairs, the misalignment of the wall (plate) shall meet the following requirements: a) For pipes or pipe fittings, the inner walls are flush, and the allowable misalignment shall not exceed 10% of the pipe wall thickness. The maximum misalignment is less than 1mm. b) For container parts and components, the allowable misalignment for welding is shown in Table 4. 2
JB/T 8471-96
Equipment foundation inspection table
Foundation coordinate position (vertical and horizontal axis)
Elevation of different planes of the foundation
Surface dimensions of the plane on the foundation
Surface dimensions of the plane on the boss
Dimensions of the recess
Unlevelness of the plane on the foundation (including the part of the equipment to be installed on the floor): a) per meter
b) full length
Vertical deviation:| |tt||a) per meter
b) full height
Embedded anchor bolts:
a) elevation (top)
b) center distance (measured at the root and top) Reserved anchor bolt holes:
a) size
b) center position
c) depth
d) verticality of the hole wall
Embedded movable anchor bolt anchor plate:
a)) size| |tt||b) Elevation
e) Center position
d) Levelness (anchor plate with groove)
e) Levelness (anchor plate with screw holes)
Table 2 Dust collector installation limit deviation,
Tolerance and inspection method
Column level,
Horizontal center line
Column bottom plate elevation
Column verticality
Beam (first layer) elevation||tt ||Center distance of beam (first layer)
Difference of diagonal line of beam (first layer)
Center line of ash hopper
Longitudinal and transverse center line of inlet and outlet flanges
Elevation of ash hopper outlet
Geometric dimensions of upper and lower openings of ash hopper
Dimensions of inlet and outlet flanges
Verticality of end faces of inlet and outlet flanges
Limit deviation and tolerance of coincidence of center line of hanger and center line of filter bag short tube
1/ 1000
1/1000
1/1000
2/1000
2/1000
Allowable deviation
Inspection method
Check with ruler
Check with level ruler
Check with ruler
Check with ruler
Hanging line Check with ruler
Check with ruler for hanging wire
Check with ruler for level
Check with ruler
Check with ruler
Check with plumb bob and steel ruler
Check 23 points on each set of hangers with plumb bob3
JB/T8471-96
Table 3 Limit deviation, tolerance and inspection method for dust collector installation Item
Inlet pipe and center line of each filter bag chamber
Inlet Center elevation of inlet pipe
Horizontal degree of regulating valve
Center line of outlet pipe
Center elevation of outlet pipe
Limit deviation or tolerance
2/1000
Table 4 Allowable misalignment of welding for group
Longitudinal weld
Girth weld
Wall thickness S
Root of single-sided weld
Inspection method
Inspect with ruler||t t||Check with ruler
Check with level
Check with ruler
Check with ruler
Misalignment
0.1S not more than 3
01S+1 not more than 4
not more than 2
4.3.6 All connecting flanges of dust collector shall be lined with sealing materials. Damaged sealing materials must be replaced. The joints shall be mitered and coated with sealant before connection and installation.
4.3.7 The center alignment deviation of the two connecting flanges of the dust collector shall not be greater than 1/6 of the bolt diameter. The screw holes of the parts and components that cannot be aligned after adjustment are allowed to use the alignment rod (joint punch) in Appendix E to force alignment and then insert the bolts for tightening. The connection with anti-loosening structure must be installed with the anti-loosening elements as specified in the drawing.
4.3.8 Where welding is used between dust collector components and bolts are pre-positioned and fastened, they should be positioned according to the method in 4.3.7 before welding according to the drawing requirements. 4.3.9 Before and after installation of pipelines, valves, and ash conveyors, internal debris and dirt should be removed. 4.3.10 The installation of steel platforms, ladders, and railings of dust collectors should comply with the provisions of GB4053. 4.3.11 The installation of pneumatic components, actuators (cylinders, pulse valves), and control valves of dust collector cleaning, differential pressure, and air source pipeline systems should comply with the provisions of the installation technical documents, and inlet and outlet inversion is not allowed. The connection of the air source pipeline should comply with the provisions of GBJ235. 4.3.12 The installed filter bag frame should comply with JB/T5917. 4.3.13 The installation of filter bags should comply with the methods specified in the installation technical documents. The bagging site, passage, and bagging short pipe must be smooth and flat. Fireworks, sitting, lying, stepping, and trampling are strictly prohibited at the bagging site. 4.3.14 When the bagging short pipe is welded on site, it shall comply with the coordinate dimensions specified in the installation drawing, and the weld shall comply with the provisions of 4.3.3 of this standard. The verticality tolerance of the bagging short pipe is 2mm.
4.3.15 Before installing the filter bag, the appearance quality must be checked one by one, and it can only be installed if it is intact. 4.3.16 Regardless of whether the filter bag has a frame or not, the bag cannot be twisted when it is installed, and there must be no wrinkles on the bag opening. Seal the bag opening tightly, tighten the surface of the filter bag, and hold the inner filter bag with a clamp ring tightly. After hoisting in place, check the verticality according to Table 5 of this standard and adjust the tension. 4.3.17 The installation of moving parts such as the cleaning mechanism, ash conveyor, reducer, and ash discharge valve shall comply with technical documents and relevant mechanical equipment construction specifications. 4.3.18 The electrical and instrument installation of the dust collector shall comply with the provisions of 4.1.1 and 4.1.2 of this standard. The construction piping and wiring of the electrical control device shall be connected one by one in accordance with the provisions of GB6988.5. After the installation of electrical equipment and pipelines, the electrical and instrument power and signal conversion debugging shall be carried out respectively, and the installation setting parameters shall be recorded truthfully. 4.3.19 After the dust collector is installed and qualified after the initial inspection, the installation unit shall apply primer and topcoat. The color of the paint film shall comply with the provisions of the factory design, and the dry paint film thickness shall be 20~50μm per layer.
4.3.20 The center of gravity of the overall factory dust collector shall be accurate to avoid damage to the paint film and components by the hanging rope. The dust collector shall be readjusted to the factory performance state according to the relevant requirements of 4.3.1~4.3.19 of this standard. 4.4 During the entire process of installation, commissioning and acceptance of the dust collector, the installation unit shall keep close contact with the manufacturing and user units, and the technical personnel of the manufacturing unit shall provide on-site guidance when necessary.
5 Construction safety technology
JB/T8471-96
5.1 Construction units must give top priority to safety education and safety management, and must formulate safety technical measures plans, which must be implemented by the leaders of the units.
5.2 Construction units must set up safety officers and full-time lifting workers to supervise safe construction. 5.3 Construction personnel should undergo safety training and only be allowed to work after passing the training. 5.4 Safety signs should be set up in the construction area in accordance with GB2894, and safety nets and safety belts should be set up in accordance with GB5725 and GB6095. 5.5 The machines, equipment, tools and ropes used in construction and installation should comply with GB7059 and GB3787 and Appendix A and Appendix C of this standard
5.6 During welding construction, welding contact electricity and arc radiation should be prevented. The welding machine wiring should have a shield, the socket should be complete, and a grounding wire must be installed, and the insulation resistance should be ≥1M2.
5.7 The power supply for construction must comply with the electrical safety technical regulations. Equipment with safety voltage requirements shall comply with the provisions of GB3805. 5.8 The minimum illumination of the installation site shall not be less than 20Ix. The site lighting is ≥95%. When the lighting device is installed at a height of ≤2.4m, the lighting voltage is ≤24V. When constructing in equipment with closed openings, a safety running light or flashlight with a voltage of <12V should be used. Open flames are prohibited. 5.9 The painting construction of the dust collector shall comply with the provisions of GB6514. 5.10 The installation construction shall formulate and implement necessary labor safety technical measures according to the climatic and environmental conditions. 5.11 After the dust collector is installed, the safety signs shall be reset in accordance with the provisions of GB2894. Electrical graphic symbols shall comply with the provisions of GB5465.2. 6 Installation acceptance specifications
6.1 Connection and safety
6.1.1 The removable connection between the various parts and components of the dust collector must be firm. There shall be no defects such as fastener slippage, ring teeth, overlong exposed heads (3 to 5 exposed heads are allowed), insufficient position and loosening.
6.1.2 The permanent welding between the various parts and components of the dust collector shall comply with the provisions of the technical documents and drawings. 6.1.3 After the dust collector is started and used, there shall be no shaking or vibration in the structure and channels. 6.1.4 Safety facilities have no hidden dangers, safety signs are clear, and safety equipment is complete. 6.2 Installation accuracy and appearance
6.2.1 The installation accuracy of the dust collector and the coordinate dimensions of the connection parts shall comply with the provisions of the technical documents and drawings. 6.2.2 The dust collector should stand straight, with clear appearance lines, straight walkways and handrails, and beautiful welds. 6.2.3 The paint color of the dust collector should be consistent, and there should be no foaming, peeling, curling, or cracks in the paint film. 6.3 Leakage prevention and sealing
6.3.1 The connection flanges and inspection doors, valves, and valve sealing packings of the dust collector should be firm and complete, and there should be no leakage. 6.3.2 The sealing and leakage prevention should meet the air leakage rate performance of the dust collector 6.3.3 The connection of the air source pipe and the pressure difference pipe with air pressure control requirements should be reliable and leak-free. 6.4 Movement mechanism
6.4.1 All valves and inspection doors must be flexible to open and close before and after assembly. 6.4.2 After the installation of the cleaning mechanism, reducer, ash conveyor and ash discharge valve, debris should be removed. Manual and power-on inching should be easy and flexible, and lubrication should be smooth. After removing the debris, carry out an 8-hour no-load test run. After operation, the temperature rise is not higher than 40°C, and the sealing is good without leakage. 6.4.3 Before the equipment is operated, it should be checked repeatedly to ensure that there are no tools, cotton debris, residual welding rods, etc. blocking the channel, and the power-on operation performance is good. 6.4.4 During the test run of the moving parts, it is strictly forbidden for non-designated personnel to tamper with switches, valves, and control buttons. 6.5 After the filter bag and filter bag are installed, the inspection should meet the requirements of Table 5. 6.6 The calculation of the tension force shall be in accordance with Appendix D.
Inspection items
Geometric dimensions
Filter bag material
Tension
JB/T8471-96
Table 5 Filter bag inspection requirements
Comply with GB12625-90 Chapter 7 Filter bag specifications and deviationsa) No more than 1 stitch, 1 thread, 1 jumper in 1m of sewing threadb) No floating thread
c) No more than 1 dropped thread in 1m
Same material
a) No twist, no fold, straight
b Bag mouth sealed without gaps
c) Verticality ≤0.005Filter bag length
d. Tension filter bag
e) Tighten filter bag
According to the requirements of technical documents
6.6 Pressure test
Test method
Iron the seam once with an iron and then measure with a steel ruler. Observe with naked eyes
Hang the center with a plumb bob and select 14 samples from each filter bag room. Check the feel of each bag. Use a dynamometer and spring scale to select 10%6.6.1 Pressure test of dust collectors should meet the system design pressure requirements. Use the system fan simulation test. The box wall panels should not show obvious deformation and vibration.
6.6.2 The compressed air and hydraulic systems of dust collectors should be tested for compressive strength. The test pressure is 1.5 times the normal working pressure. 6.7 Electric control and instrumentation
6.7.1 The outer shell protection of electric control cabinets and electrical load equipment should comply with GB4208, and the protection level indoors should reach IP44 level, and the protection level outdoors should reach IP54 level.
6.7.2 The electric control cabinet and instrument inspection shall be debugged according to the relevant installation technical documents. After the debugging is qualified, the online continuous test operation shall be not less than 8 hours. 6.8 Painting
6.8.1 The adhesion of the paint film shall be determined by the viscosity method. The inspection time shall be within 1 month after the paint film is completely dry. The inspection can be carried out on the dust collector body. Use a sharp safety blade to draw a 60°× on the paint film, deep to the metal, as shown in Figure 1, and then stick a special tape (polyester tape) to make the tape close to the paint film, and then quickly pull up the tape. If the maximum width of the paint film stuck on both sides by the knife does not exceed 2mm, it is qualified. There shall be no less than 10~20 inspection points. For large dust collectors, one point shall be taken for every 10m2, and the inspection point shall be taken at the center of the inspection surface. Figure 1
6.8.2 Anti-rust oil or anti-rust grease shall be applied to the unpainted parts. 7 Performance test
7.1 After the bag filter is installed and operated for one month, the on-site use and performance test shall be carried out according to the second part of GB12138-89. 7.2 The performance test value of the bag filter shall not be lower than the provisions of the product standard or national standard on the emission value of atmospheric dust and toxic substances. 6
JB/T 8471-96
Appendix A
Load and safe lifting - angle, steel rope, tonnage (standard appendix)
Lifting angle, tension and compression force are shown in Figure A1 and Table A1. 497
Lifting angle ()
Force (times)
For the limited load tonnage and angle when two steel ropes are safely lifted, see Table A2Table A2
6X24A type
Compression force (times)
(Safety factor 6)
JB/T8471-96
Appendix B
Rigging shackle types and safe use load table (Standard Appendix)
For the rigging shackle types, see Figure B1.
For safe use load, see Table B1 and Table B2
Shackle number
Rigging shape
Used load for domestic common type rigging shackle
Table B2 Domestic commonly used type 9
(Shape similar to SD type) Load for rigging shackle Load t
Rope diameter mm
Shackle number
Load t
Rope diameter
JB/T8471-96
Appendix C
Load table for lifting lugs and lifting lug specifications
(Appendix to the standard)
For lifting lugs and lifting lug specifications, see Figure C1 and Table C1. Lifting lug
Load table for lifting lug specifications1. The adhesion of the paint film is measured by the viscosity method. The inspection time is within one month after the paint film is completely dry. The inspection can be carried out on the dust collector body. Use a sharp safety blade to scratch a 60°× on the paint film, deep to the metal, as shown in Figure 1, and then stick a special tape (polyester tape) to make the tape close to the paint film, and then quickly pull up the tape. If the maximum width of the paint film stuck on both sides by the knife is no more than 2mm, it is qualified. There are no less than 10~20 inspection points. For large dust collectors, one point is required for every 10m2 or so, and the inspection point is taken at the center of the inspection surface. Figure 1
6.8.2 Unpainted parts should be coated with anti-rust oil or anti-rust grease. 7 Performance inspection
7.1 After the bag dust collector is installed and operated for one month, the field use and performance test should be carried out according to the second part of GB12138-89. 7.2 The performance test value of the bag dust collector should not be lower than the provisions of the product standard or national standard on the atmospheric dust and toxic emission value. 6
JB/T 8471-96
Appendix A
Load and safe lifting - Angle, steel rope, tonnage (Standard Appendix)
Lifting angle, tension and compression force are shown in Figure A1 and Table Al. 497
Lifting angle ()
Force (times)
Limited load tonnage and angle for safe lifting with two steel wire ropes are shown in Table A2 Table A2
6X24A Class
Compression force (times)
(Safety factor 6)
JB/T8471-96
Appendix B
Rigging shackle type and safe use load table (Standard Appendix)
Rigging shackle type is shown in Figure B1.
For safe use load, see Table B1 and Table B2
Shackle number
Rigging shape
Used load for domestic common type rigging shackle
Table B2 Domestic commonly used type 9
(Shape similar to SD type) Load for rigging shackle Load t
Rope diameter mm
Shackle number
Load t
Rope diameter
JB/T8471-96
Appendix C
Load table for lifting lugs and lifting lug specifications
(Appendix to the standard)
For lifting lugs and lifting lug specifications, see Figure C1 and Table C1. Lifting lug
Load table for lifting lug specifications1. The adhesion of the paint film is measured by the viscosity method. The inspection time is within one month after the paint film is completely dry. The inspection can be carried out on the dust collector body. Use a sharp safety blade to scratch a 60°× on the paint film, deep to the metal, as shown in Figure 1, and then stick a special tape (polyester tape) to make the tape close to the paint film, and then quickly pull up the tape. If the maximum width of the paint film stuck on both sides by the knife is no more than 2mm, it is qualified. There are no less than 10~20 inspection points. For large dust collectors, one point is required for every 10m2 or so, and the inspection point is taken at the center of the inspection surface. Figure 1
6.8.2 Unpainted parts should be coated with anti-rust oil or anti-rust grease. 7 Performance inspection
7.1 After the bag dust collector is installed and operated for one month, the field use and performance test should be carried out according to the second part of GB12138-89. 7.2 The performance test value of the bag dust collector should not be lower than the provisions of the product standard or national standard on the atmospheric dust and toxic emission value. 6
JB/T 8471-96
Appendix A
Load and safe lifting - Angle, steel rope, tonnage (Standard Appendix)
Lifting angle, tension and compression force are shown in Figure A1 and Table Al. 497
Lifting angle ()
Force (times)
Limited load tonnage and angle for safe lifting with two steel wire ropes are shown in Table A2 Table A2
6X24A Class
Compression force (times)
(Safety factor 6)
JB/T8471-96
Appendix B
Rigging shackle type and safe use load table (Standard Appendix)
Rigging shackle type is shown in Figure B1.
For safe use load, see Table B1 and Table B2
Shackle number
Rigging shape
Used load for domestic common type rigging shackle
Table B2 Domestic commonly used type 9
(Shape similar to SD type) Load for rigging shackle Load t
Rope diameter mm
Shackle number
Load t
Rope diameter
JB/T8471-96
Appendix C
Load table for lifting lugs and lifting lug specifications
(Appendix to the standard)
For lifting lugs and lifting lug specifications, see Figure C1 and Table C1. Lifting lug
Load table for lifting lug specifications
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