JB/T 5907-1991 General technical specifications for electrostatic precipitator rapping system

JB/T 5907-1991 General technical specifications for electrostatic precipitator rapping system JB/T5907-1991 Standard download and decompression password: www.bzxz.net

J88 | | tt | | JB | | |tt | ||Electrostatic precipitator rapping system
General technical conditions
1 Main remaining content and applicable scope
This standard specifies the classification, technical requirements and Test Methods. JB590791
This standard applies to the electrostatic precipitator anode plate and cathode wire direction finding flex hammer root beating system specified in ZBJ88001.3, 2 referenced standards
ZBJ88001.3 electrostatic precipitator technical conditions||tt ||ZBJ88001.8 Electrostatic precipitator anode plate and cathode wire reporting acceleration measurement method 3 terms
Electrostatic precipitator reporting system
It consists of anode plate, cathode wire and its suspension device, and deflection hammer It is a three-part system for reporting the loading quantity. 4 categories
4.1 Main installation types of anode plates
. Fixed connection type:
Note; Tight-circuit connection type is used to increase the upper and lower points of the anode plate with explosion detection and suspension brackets, Suspension type with tight connection of the reporting rod. b. Single-point eccentric suspension type,
Note, the single-point eccentric suspension is a suspension type with compensated eccentric suspension on the anode plate, and the free bell at the lower end enters the reporting rod. Other types: such as the upper suspension on the anode plate. Hanging, the lower end is connected with bolts and alarm rod case, c.
4.2 Main installation type of Mingji line
c.| |tt|| Frame type (see Figure 1):
Hammer type (see Figure 2);
Hook type (see Figure 3),
Ministry of Mechanical and Electrical Industry 1991 -12-25 approved 1992-10-01 implementation
JB5907-91
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Figure 3||tt ||Figure 2
Upper c display case
Shadow area
5 technical requirements and test methods
5.1 Vibration part
JB5907-91||tt ||5.1.1 Where bolted joints are used, a torque wrench must be used to tighten and spot weld to the torque specified in the installation instructions. 5.1.2 The core single-point hanging anode plate hanging device must ensure the connection under the anode plate. There is complete contact between the plate and the pad in the strike lever. 5.1.3 In the same electric field, all signs should be kept on the same horizontal line, with a deviation of ±3mm. 5.2 Excitation part
5.2.1 When the rapping system is in working condition, the connection position between the rapping rust and the stand plate should be slightly centered up and down, left and right (the deviation is ±5mm), and there should be no tilted contact. Make the contact line L between the hammer and the board at least 50% greater than the full length when in full contact. 5.2.2 The vibration hammer rotates flexibly and can automatically fall after turning the critical point. 5.3 The minimum acceleration value of the vibration-receiving part and the uniformity of acceleration distribution on the vibration-receiving surface 5.3.1 The minimum acceleration value a of the vibration-receiving part is determined The acceleration value is limited to the small amount of the reported part. The following five main factors should be considered: a.
The anode plate and cathode line should be basically kept clean: the secondary current will not gradually decrease, and the electrical The parameters should always be maintained in an optimal state: it will not cause excessive secondary flying and metal fatigue: for different hanging forms of the anode plate and cathode wire, different minimum operating acceleration values ??should be taken: d.bzxz.net
It is recommended to use different minimum reported acceleration values ??for different electric fields. The first electric field is (0.5~0.7)a, the second and third electric fields are (0.9~1.1)a, and the electric fields after the third electric field are all (1.3~1.5)a.5.3.2 The uniformity of the distribution of the acceleration values ??of the vibration-receiving part on the plane of the vibration-receiving part. The uniformity of the distribution of the acceleration values ??of the vibration-receiving part on the plane of the vibration-receiving part is determined by the relative distribution of the acceleration values ??of the gripping acceleration measured on the surface of the vibration-receiving part. Measured by the root mean square difference:
(a; -a):
where:,--relative root mean square difference
9-1——the parent variance Unbiased estimator; a; - the acceleration of the measuring point, 9.8m/s*,
a - the average acceleration of the measuring point on the measured surface, 9.8m/s*: Yuan - the measured section Number of measuring points,
(-1)a)
For anode plates and corresponding cathode lines with a width equal to or less than 500mm, it is specified that a,<0.40 is uniformly distributed. If measured on site, it can only be measured It is stipulated that when the reported acceleration values ????are obtained on both sides of the anode plate and cathode line, <0.45 is evenly distributed. 5.3.3 The method for measuring the rapping acceleration value of the vibrated part shall comply with the provisions of ZBJ88001.8. 5.3.4 Determination of the minimum rapping acceleration value of the cathode wire. For polar wires such as tubular burr wires, star-shaped burr wires and zigzag burr wires, for bright pole wires whose rapping acceleration can be measured online, the rapping acceleration value can be measured directly on the cathode wire. Measurement, the spiral-shaped line can measure the pressing acceleration value on the rack, 5.3.5 Reporting interval time
Select the reporting interval time so that within this time interval, the anode plate and the cathode line form Proper dust thickness. Additional notes:
This standard is proposed and managed by the Zhubi Electric Precipitation Research Institute. This standard was drafted by Zhuji Electrostatic Precipitator Research Institute. The drafters of this standard are Fu Bohe and Chen Kangyuan, 3
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