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Coarse adjustment and fine adjustment combined pulse attenuator and pulse attenuation method

A combination of pulse attenuator and technology, which is applied in the field of pulp and paper making, can solve the problems of unsatisfactory effect and large fixed investment, achieve the effect of simple principle and equipment structure, improve paper performance, and attenuate pulp flow pressure pulsation

Active Publication Date: 2021-03-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improving the structure of the sizing pump and the online pressure screen can reduce the sizing pressure (or flow) pulse to a certain extent, but the effect is often unsatisfactory and requires a large fixed investment

Method used

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  • Coarse adjustment and fine adjustment combined pulse attenuator and pulse attenuation method
  • Coarse adjustment and fine adjustment combined pulse attenuator and pulse attenuation method
  • Coarse adjustment and fine adjustment combined pulse attenuator and pulse attenuation method

Examples

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Effect test

Embodiment 1

[0042] This embodiment is a pulse attenuator that binds to the fine adjustment, such as figure 1 or figure 2 As shown, including the puncturing tube 1, the coarse adjustment device 2, the first damping element 3, the connecting pipe 4, the fine tuning device 5, the second damping element 6, and the dried tube 7, and in the coarse tube 7. The first slurry flow passage 2-1 and the first air cushion chamber 2-2, the first air cushion chamber is connected to the first gas supply system, and the second slurry flow passage 5-1 in which sequential communication is provided in the fine tuning device. -2, the second gas mat 5-3 and the overflow chamber 5-4, the second gas supply system is connected to the second gas supply system. Among them, the coarse adjustment device and the first damping element form a first-stage attenuation pulse, the pulse generated by the slurry flows to the primary attenuation, the attenuation amplitude is large, the fine-tuning device and the second damping el...

Embodiment 2

[0057] The present embodiment is a pulse attenuation method which is coarse-conditioned and fine-tuning, and can be implemented by the pulse attenuator described in Example 1, including the following steps:

[0058] (1) The slurry is first entered into a coarse tuning device, and the first gas supply system passes into the first gas cushion. After the gas pressure in the first gas cushion chamber reaches the rated value, the gas pressure is stable in the first gas cushion. The slurry continuously passes through the first slurry flow path, and the pulse of the slurry flow through the volume of the gas cushion chamber is to achieve the purpose of eliminating the pulp flow pulse;

[0059] (2) After the slurry passes through the first slurry flow passage, the first damping element is first passed through the first damping element, and the first damping element places the speed pulsation of the slurry to the preliminary reflection and blocking effect, and then the slurry will enter the...

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Abstract

The invention discloses a coarse adjustment and fine adjustment combined pulse attenuator and a pulse attenuation method, the pulse attenuator comprises a slurry inlet pipe, a coarse adjustment device, a first damping element, a connecting pipe, a fine adjustment device, a second damping element and a slurry outlet pipe which are connected in sequence, a first slurry flow channel and a first air cushion chamber which are communicated are arranged in the coarse adjustment device; AND the first air cushion chamber is connected with a first air supply system, a second slurry flow channel, a slurry storage barrel, a second air cushion chamber and an overflow chamber which are sequentially communicated are arranged in the fine adjustment device, and the second air cushion chamber is connected with a second air supply system. The pulse attenuation method comprises the steps that the coarse adjustment device and the first damping element are used for conducting first-stage pulse attenuation on slurry, then the fine adjustment device and the second damping element are used for conducting second-stage pulse attenuation on the slurry, and therefore the slurry flow pressure and speed of an outlet of the pulse attenuator are kept in a stable state. Aiming at the characteristics of the pulses, two-step attenuation pulses are provided, and the pulse amplitude is precisely controlled.

Description

Technical field [0001] The present invention relates to the field of pulping paper technology, and more particularly to a pulse attenuator and a pulse attenuation method that binds to the coarse adjustment and fine adjustment of the papermaking system. Background technique [0002] The uniformity of paper quantitative distribution is a key factor affecting paper performance, and during the production of paper production, the stability of paper tensions is a key factor affecting the production efficiency of paper machine. Therefore, the paper quantification fluctuation problem is an important topic for long-term paper workers. [0003] With the development of society, the improvement of the people's living standards, the quality of paper puts forward more and more demands, on the other hand, the development of paper industry is developing high speed, large and wide direction, and the problem of paper timing fluctuations The more he attaches importance to papermaking companies. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F1/06D21G9/00
CPCD21F1/06D21G9/0009Y02W30/64
Inventor 刘建安张珂樊慧明黄珊珊牟洪燕
Owner SOUTH CHINA UNIV OF TECH
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