This standard specifies the model compilation method, technical requirements, test methods, inspection rules, marking, random documents and packaging, installation and use, quality responsibility, etc. of industrial boiler cyclone dust collectors. JB/T 8129-2002 Technical conditions for industrial boiler cyclone dust collectors JB/T8129-2002 standard download decompression password: www.bzxz.net

ICS27.060
Machinery Industry Standard of the People's Republic of China
JB/T8129-—2002
Replaces JB/T81291995
Specification for cyclone dust collector of industrial boilers2002-12-27 Issued
2003-04-01 Implementation
Issued by the State Economic and Trade Commission of the People's Republic of ChinaForeword
Normative reference documents,
3 Model compilation method
4 Technical requirements
Basic requirements
4.2 Manufacturing..
Inspection and testing
Inspection of materials
Inspection of cyclones, welded parts and assemblies||tt| |Paint inspection
Permeability test,wwW.bzxz.Net
Air tightness test,
Hot performance test
Inspection rules.
Factory inspection
Type test.
Marking, random documents and packaging
Installation and use,
Quality responsibility..
Figure 1 Cyclone dust collector model legend
Table 1 Dust collector type code
Table 2 Dust collector hot performance indicators
Table. Cyclone material.
Table 4 Diagonal deviation of square and rectangular flangesTable 5 Inner diameter deviation of simplified body
Table 6 Factory inspection items and inspection requirements.
Table 7 Type test items and inspection requirements,
JB/T8129—2002
This standard replaces JB/T81291995 "Technical Conditions for Industrial Boiler Cyclone Dust Collectors". Compared with JB/T8129-1995, the main changes of this standard are as follows: - The method for compiling the model of cyclone dust collector has been added (Chapter 3 of this edition) - Requirements for the performance indicators of cyclone dust collectors have been proposed (Table 2 of this edition): - Requirements for the material and manufacturing quality of cyclones have been proposed (4.2.1.4.2.2 of this edition): JB/T8129-2002
- The contents of the chapters on blanking, rolling, assembly, etc. in the manufacturing of standard products have been adjusted, and the provisions on process requirements and some blanking tolerances have been cancelled (2.1, 2.3 and 2.4 of the 1995 edition, 4.2.3 of this edition); - The requirements for factory inspection and type testing have been clarified (Chapter 6 of this edition); - The provisions for installation and use, quality responsibility have been added (Chapters 8 and 9 of this edition): This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Boiler Standardization (CSBTS/TC73). This standard was drafted by Shanghai Industrial Boiler Research Institute, and Hebi Dongfang Environmental Protection Co., Ltd., Chongqing Dust Collector Factory, Jiangsu Yancheng Energy Saving and Environmental Protection Equipment Factory, and Zhangjiakou Thermal Energy Engineering Technology Research Institute participated in the drafting. The main drafters of this standard are Ye Mian, Wu Kelong, Yang Zhenkun, Xia Ping, and Liu Youlin. The previous versions of the standards replaced by this standard are: GB/T8589-1988, JB/T8129-1995. III
1 Scope
Technical conditions for industrial boiler cyclone dust collectors
JB/T8129-2002
This standard specifies the model compilation method, technical requirements, test methods, inspection rules, markings, random documents and packaging, installation and use, quality responsibility, etc. of flue gas cyclone dust collectors for industrial boilers. This standard applies to single-tube, double-tube and multi-tube cyclone dust collectors used in conjunction with industrial boilers. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For all referenced documents with dates, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all referenced documents without dates, the latest versions are applicable to this standard. GB/T985 Basic forms and dimensions of weld openings for gas welding, manual arc welding and gas shielded welding GB/T1800.3--1998 Basis of limits and fits Part 3: Numerical tables of standard tolerances and basic deviations GB/T5468 Test methods for boiler smoke
GB/T6414--1999 Dimensional tolerances and machining allowances for castings GB/T8263 Wear-resistant white iron cast parts
GB/T9439 Grey iron cast parts
3 Model compilation method
3.1 The model of cyclone dust collector consists of two parts: the first part is the type code of the dust collector, and the second part is the specification of the dust collector. The two parts are connected by a horizontal line, as shown in Figure 1.
X××-××
Type code
Legacy of cyclone dust collector
3.2 The type code of cyclone dust collector consists of three Chinese phonetic letters, see Table 1. The specifications of dust collector are expressed in tons of steam of the matching boiler capacity. For hot water boilers, 0.7MW is converted to 1 ton of steam. Table 1 Type code of dust collector
Type of dust collector
Single-tube cyclone
Double-tube cyclone
Multi-tube cyclone
3.3 Examples of cyclone dust collector models are as follows:
Example: XST-2 represents a double-tube cyclone dust collector matching a 2t/h (or 1.4MW) boiler. Code
JB/T8129—2002
4 Technical requirements
4.1 Basic requirements
4.1.1 The hot performance index of cyclone dust collector under rated working conditions shall comply with the provisions of Table 2. Table 2 Hot performance index of dust collector
Hot dust removal efficiency
Hot resistance Pa
Air leakage rate (%)
Single and double cyclone dust collector
≤900
4.1.2 Cyclone dust collector shall be equipped with reliable air lock and dust collection device. 4.1.3 Cyclone dust collector shall be compact and easy to maintain. 4.2 Manufacturing
Multi-tube cyclone dust collector
≤1200
4.2.1 Cyclone material and sealing material
4.2.1.1 The cyclone material of the cyclone dust collector shall comply with the provisions of Table 3, but if there are special requirements, they shall be in accordance with the design requirements. Under the condition that the performance and life of the cyclone dust collector are not affected, the cyclone material can be substituted after the material substitution procedures are completed with the consent of the technical department. Table 3 Cyclone material
Material wear resistance
General wear resistance
Relatively wear resistance
Wear-resistant white cast iron
There is no industry standard for ceramic materials used in dust collectors, and its material can be specified by the enterprise standard. Material standard
GB/T9439
GB/T8263
The heat-resistant temperature of the sealing material and gasket material used for the sealing surfaces of cyclone dust collectors shall not be lower than 250℃. 4.2.1.2
4.2.2 Manufacturing of cyclones
When using cast iron cyclones, the following requirements shall be met: The cyclones shall be cast using metal molds. The dimensional tolerance of the cyclones shall comply with the provisions of CT9 in GBT6414-1999. The quality of the cyclones shall comply with the provisions of GB/T8263 or GB/T9439: When using ceramic cyclones, the following requirements shall be met: The flatness of each connecting surface of the cyclone shall not be greater than 1mm: The surface of the cyclone shall not have cracks, partial defects, and other defects that may affect the normal operation of the product. 4.2.3 Manufacturing of welded parts
4.2.3.1 Diagonal deviation of square parts such as steel plates: When the diagonal size is less than 1000mm, it should not exceed ±2mm: When the diagonal size is greater than or equal to 1000mm, it should not exceed ±3mm. 2 The diagonal deviation of square and rectangular flanges shall comply with the provisions of Table 4. 4.2.3.2
Table 4 Diagonal deviation of square and rectangular flanges Diagonal size Lmm
Diagonal length deviation mm
L≤500
500<≤1200
1200≤≤2000
The maximum inner diameter deviation of circular flanges shall not exceed 0.5% of the inner diameter of the flange. 4.2.3.3
4.2.3.4 The flatness of the flange after manufacture shall comply with the following provisions: 20003150
Round flange: When the inner diameter is not greater than 500mm, its flatness should not be greater than 1mm; when the inner diameter is greater than 500mm, its flatness should not be greater than 2mm:
Square flange: When the inner diagonal length is not greater than 600mm, its flatness should not be greater than 1mm; when the inner diagonal length is greater than 600mm2
, its flatness should not be greater than 2mm.
JB/T8129---2002
4.2.3.5The working surface of the flange should be smooth and flat; the weld should be ground flat. Special molds should be used for flange drilling, and the two connected flanges should adopt matching drilling technology.
4.2.3.6The inner diameter deviation of the simplified body should comply with the provisions of Table 5. Inner diameter size of cylinder Dmm
Inner diameter deviation mm
Inner diameter deviation of cylinder
D≤500
500D≤1200
1200
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