Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T7670--95
Tube-type electrostatic precipitator
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
Tube-type electrostatic precipitator
Subject content and scope of application
JB/T7670-95
This standard specifies the type and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of tubular electrostatic precipitators.
This standard applies to tubular electrostatic precipitators.
Cited standards
GB4879
GB/T13306
GB/T 13931
JB5845
JB5908
JB5913
JB/T53326.1
ZBK46 008.1
3 Types and basic parameters
3.1 Code representation method
Rust-proof packaging
Performance test method
Electrostatic precipitator
Test method for rectifier equipment for high-voltage electrostatic precipitator Sampling inspection and packaging, transportation and storage specifications for main parts of electrostatic precipitator Cathodic line of electrostatic precipitator
Quality classification of electrostatic precipitator products
Rectifier equipment for high-voltage electrostatic precipitator
Gas Body flow area m\/number of tubes or channels Tube structure, L means tube array; I means concentric tube: TF means auxiliary electrode concentric four-tube tubular electrostatic precipitator
Example 1: DLL2.31/6 type electrostatic precipitator, means tubular, flow area is 2.31m*, 6 tubes in parallel, Example 2: DLTF2.31/6 type electrostatic precipitator, means tubular, flow area is 2.31m, concentric tube array, with 6 auxiliary electrode channels.
3.2 Type
3.2.1 Anode tube structure The flue gas channel is of two basic types: tube array and concentric tube. The concentric channel is divided into two types: without auxiliary electrode and with auxiliary electrode.
3.2.2 The tubular electrostatic precipitator consists of three parts: the main body, high-voltage power supply, and low-voltage control equipment. The main body includes anode tube and shell, cathode system, anode and cathode vibration cleaning device, electric heating device, ash hopper and ash discharge device. 3.3 Basic parameters
3.3.1 The basic parameters of anode tubes shall comply with the provisions of Table 1. Approved by the Ministry of Machinery Industry on June 16, 1995
Implemented on July 1, 1996
Diameter mm
Concentric garden tube
Concentric diagram tube
Inside/outside
Inside/middle/outside
JB/T 767095
500;550;600;550;700;750+800;850600/1800,650/1950;700/2100
600/1800/3000;650/1950/3250;700/2100/35006500;7000;7500,8000;8500www.bzxz.net
3.3.2 The basic types of cathode wires are X-type, thorn-type, circular, etc. 3.4 High-voltage power supply
3.4.1 Each power supply partition is supplied by a high-voltage power supply: 3.4.2. The high-voltage power supply consists of a whole-diamond transformer and a high-voltage control cabinet. 3.5 Low-voltage control equipment
Each set of electrostatic precipitator is controlled by a low-voltage control device to control the digging, dust cleaning device, electric heating and dust discharge device. 4 Technical requirements
4.1 The product shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.2 Under the condition of meeting the design working conditions, the dust concentration at the outlet of the electrostatic precipitator shall meet the national emission standards; the efficiency and air leakage rate of the electrostatic precipitator shall meet the guaranteed values specified in the product contract or technical agreement. 4.3 Under the condition of meeting the design working conditions, the pressure drop of the electrostatic precipitator body shall not exceed 400Pa. 4.4
In the no-load boost test, the average field strength shall not be less than 2.8kV/cm, and the relative root mean square deviation of the airflow distribution uniformity shall be more than 0.25. 4.6 The performance indicators of tubular electrostatic precipitator shall comply with the relevant provisions of JB/T53326.1. 4.7 Manufacturing quality and installation accuracy
4.7.1 The dimensional deviation between the maximum diameter and the minimum diameter of the same section of the tube cylinder shall not exceed 10mm. 4.7.1.1 For the same section of concentric circular tubes, the distance between the outer wall of the inner tube and the inner wall of the outer tube, the dimensional deviation between the maximum spacing and the minimum spacing shall not exceed 10mm.
The verticality deviation of the steel cylinder is 1/1000 of the cylinder height, and its flatness deviation is not more than 3mm. 4.7.1.2
4.7.2 Electrode system
4.7.2.1 The verticality deviation of the anode tube and the central axis of the anode concentric tube during installation shall not be greater than L/1000 of the total length. 4.7.2.2 The deviation of the polar distance of the anode tube and the cathode wire to the anode tube shall not be greater than 5mm, and the spacing between all other charged bodies and non-charged bodies shall be greater than or equal to half of the polar distance. 4.7.2.3 The cathode wire shall comply with the provisions of JB5913. 4.7.3 Vibrating and cleaning device
4.7.3.1 The overall test value of the cathode vibration and anode vibration cleaning device and the uniformity of the vibration acceleration distribution is 8,≤0.45, and 8≤0.45 when measuring the top and bottom.
4.7.3.2 Anode tube scraping and cleaning device, the scraping ring and the scraping brush should not be stuck, fall off and other defects, 4.7.4 The dust removal device should have dust removal and air locking functions, and should not be stuck, blocked and other defects. 4.8 Electric heating device and insulation facilities
JB/T767095
In order to ensure the normal operation of the electrostatic precipitator, an electric heating device should be installed in the insulating porcelain sleeve, the total hanging porcelain rod, and the porcelain axle box to prevent the circuit, and the shell should be provided with necessary insulation layer.
4.9 The shell and auxiliary equipment of the electrostatic precipitator should be grounded separately, and the grounding resistance should be less than 20. 5 Test method
5.1 Test conditions
On-site industrial test.
5.2 Test status
Temperature, pressure drop and air leakage rate are measured under the on-site operating working conditions. 5.3 Main performance test
Refer to the provisions of 5.1, 5.4 and 5.5 of GB/T13931 to conduct air flow distribution and dust removal efficiency tests, and the results shall comply with the provisions of 4.2 to 4.6 of this standard and the contract requirements. 5.4 The high-voltage power supply shall comply with the provisions of ZBK46008.1 and JB5845. 6 Inspection rules
6.1 All parts must be inspected before leaving the factory, and they can only leave the factory after passing the inspection, and a certificate of conformity shall be issued. 6.2 After installation, the assembly accuracy shall be measured according to the relevant methods such as Appendix A of JB/T5908, and the distance between the cathode and the anode shall be measured; grounding resistance measurement: no-load power-on boost test. 6.3 After the electrostatic precipitator is in operation, copy the technical agreement to conduct the following main performance tests: dust removal efficiency or emission concentration measurement;
body pressure drop measurement;
air leakage rate measurement
According to the inspection results, refer to JB/T53326.1 for qualification judgment. 7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 Product marking
The product label should be fixed at an appropriate and obvious position of the electrostatic precipitator. The label type and size should comply with the provisions of GB/T13306 and indicate the following contents:
Product model name:
Main technical parameters:
Manufacturer name:
Factory number:
Factory date.
Packaging marking
Product model, name, number plate:
Factory number:
None package size (length × width × height):
Gross weight and net weight:
Departure station, shipping unit, arrival station (port), receiving unit: contract number,
Transportation mark and lifting position mark.
7.2 Packaging
JB/T7670-95
7.2.1 The main body anode tube, shell, ash hopper and other components are installed; the supporting electrical parts, electrical transmission machine, and cathode wire are packed in boxes to ensure that the product is not damaged and meets the transportation requirements.
7.2.2 The rust prevention of the product shall comply with the provisions of GB4879. 7.3 Random documents
Installation and operation instructions;
b. Certificate of conformity:
Delivery list.
7.4 Transportation
7.4.1 Mechanical connection and damage should be avoided between bare parts and boxed parts during transportation. 7.4.2 Parts should be firmly fixed during transportation, and electrical auxiliary machines and electric porcelain parts should be prevented from severe vibration and bumps. 7.5 Storage
7.5.1 If the electrostatic precipitator is not assembled temporarily, the parts should be classified and properly stored to prevent rust, deformation and damage. 7.5.2-pole wires, supporting electrical auxiliary machines, motors, insulating parts, etc. should be stored indoors. Additional notes:
This standard was proposed by the Electrostatic Precipitator Standardization Technical Committee of the Ministry of Machinery Industry. This standard is under the jurisdiction of Zhuji Precipitator Research Institute. This standard was drafted by Zhejiang Shiliping Filter Factory. The main drafters of this standard are Lv Zuosheng, Tang Guoshan, Chen Guowei, and Xu Shouqing.
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