Method for adjusting resistance of ventilation dust removal pipe

Abstract

The invention discloses a method for adjusting resistance of a ventilation dust removal pipe, and belongs to the technical field of environmental protection equipment. By means of the method, an adjustable hole plate type resistance balancer is designed for adjusting resistance balance, hole plate insertion pieces in corresponding aperture ratios are selected according to the values of the resistance needing to be balanced, the hole plate insertion pieces with different aperture ratios are subject to zero dimension analogue simulation in a pipe, the resistance values under all aperture ratiosare obtained, local resistance factors are further figured out, and a chart is drawn for reference by a designer. The designed adjustable hole plate type resistance balancer has the advantages of being simple in structure, low in constructing cost, easy and convenient to operate and the like; and meanwhile, when the air pipe resistance is debugged, the hole plate insertion pieces with different aperture ratios can be changed for achieving the aim of balancing the resistance in the pipe. In addition, the pipe net resistance debugging work can be avoided, the resistance balancer local resistancefactor values corresponding to the air speed of the air pipe are selected according to the resistance values needing to be adjusted directly, and great convenience is brought during production and design.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to a method for adjusting the resistance of a ventilation and dust removal pipeline. Background technique [0002] Today, with the rapid development of industrialization, all countries are paying more and more attention to the problem of atmospheric environmental pollution. The pollution problems faced by our country are very serious, especially the dust pollution in the air. This requires many factories to be equipped with a large number of ventilation and dust removal systems, but there are still many unresolved problems in the dust removal system, especially in improving the pressure imbalance of the ventilation and dust removal system, which is of great significance. [0003] In the current large-scale ventilation and dust removal pipe network, the pipeline is very complicated, with many nodes and ventilation points in the pipeline, and par...

AI Technical Summary

Problems solved by technology

The traditional method is generally divided into two types to ensure the balance of internal resistance in the pipe. One is to adjust the diameter of the branch pipe. The wear of the dust on the pipeline is intensified or the settlement of the dust is blocked, and even the useful materials are sucked away

The second is to add valves to achieve the purpose of node resistance balance by changing the opening of the valve. This method is mainly used for branch pipes with small diameters, but it is not suitable for larger pipe diameters. The main reason is the large diameter Whether the valve is operated electrically or pneumatically, the price is relatively expensive

There are mainly two kinds of resistance balancers with adjustable resistance in the market. One is an adjustable wear-resistant resistance balancer (applicant: MCC South Engineering Technology Co., Ltd., inventor: Lv Yongpeng, application number: 201520803123.9), but this Compared with the general resistance balancer, the resistance balancer has a complex structure and is difficult to disassemble. The more openings of the short tube will lead to poor air tightness. In addition, the resistance balancer is equipped with a pressure measuring short tube for resistance measurement, which not only increases the cost , which also shows that the resistance balancer needs to be debugged when performing resistance balance

Another resistance balancer is an adjustable anti-wear type resistance balancer (applicant: Zhong Handing, inventors: Zhong Bin, Feng Chengcheng, etc., application number: 201320159335.9), this resistance balancer adds a device similar to a valve, not only increases The production cost also leads to the deviation of the fluid in the pipe, which aggravates the wear of the pipe network, and requires cumbersome debugging work when performing resistance balance

From the above two adjustable resistance balancers, it is not difficult to find that they not only have their own defects, but also need to carry out the debugging work of resistance balance when performing resistance balance.

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