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Loosening and leaf-moistening hot air temperature control method based on outlet moisture and temperature as feedback

A technology of outlet moisture and hot air temperature, which is applied to controllers with specific characteristics, electric controllers, tobacco preparation, etc., can solve problems such as frequent vibration, PID control lag, and poor control accuracy, achieving scientific relationship and increasing relevance , high adaptability and intelligence

Pending Publication Date: 2021-10-19
CHINA TOBACCO ZHEJIANG IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the problems of control lag, poor control accuracy, and frequent oscillations, this PID has always been a bottleneck problem that limits the continuous improvement of product quality.

Method used

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  • Loosening and leaf-moistening hot air temperature control method based on outlet moisture and temperature as feedback
  • Loosening and leaf-moistening hot air temperature control method based on outlet moisture and temperature as feedback
  • Loosening and leaf-moistening hot air temperature control method based on outlet moisture and temperature as feedback

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Embodiment Construction

[0035] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0036] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0037] Furthermore, in describing the present invention, it is to be understood that the terms "center", "longit...

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Abstract

The invention relates to a loosening and leaf-moistening hot air temperature control method based on outlet moisture and temperature as feedback, which comprises the following steps: after entering a production stage, judging whether the outlet moisture and temperature can acquire numerical values, if so, entering a control mode of 'cascade feedback control of outlet moisture and temperature to set hot air temperature value', according to the control mode, selecting different cascade methods according to different value intervals of the moisture and temperature of the outlet material, selecting whether to load a cascade factor according to different value intervals, selecting to load a strong cascade factor or a weak cascade factor, calculating a cascade factor result a, taking the sum of the hot air temperature set value and the cascade factor result a in the production stage as an SP value of an outlet index cascade PID, taking the hot air temperature actual value as a PV value of the PID, and controlling the opening degree of a steam film valve by a PID calculation result CV value. The correlation between moisture and temperature in the leaf moistening machine is fully known, and hot air is reasonably controlled by combining different characteristics of moisture and temperature.

Description

technical field [0001] The invention belongs to the field of temperature control of circulating hot air for tobacco loosening and moistening machines, and in particular relates to a method for controlling the temperature of loose and moistening hot air based on the outlet moisture temperature as the back feed. Background technique [0002] The silk loosening and leaf moistening machine is a device for loosening and rehydrating the sliced ​​tobacco sheets in the tobacco silk making process. The loosening and moistening process increases the temperature and humidity of the tobacco sheets, fully loosens the tobacco sheets, and improves the processing resistance of the tobacco sheets. , to facilitate the processing of the next process. The common HAUNI TBL type loose moist leaf adopts fixed water addition ratio (recipe parameter) to control water addition. [0003] The silk loosening and leaf conditioning machine commonly used in the industry uses the steam pipeline heating cyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42A24B3/04A24B3/18
CPCG05B11/42A24B3/04A24B3/18
Inventor 郭奔秦华朱辉平黎明星李汉莹
Owner CHINA TOBACCO ZHEJIANG IND
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