Heating temperature control method for adjusting charging bucket threshold value based on spice liquid weight

A control method and spice liquid technology, which are applied in the direction of temperature control using electric methods, electrical program control, program control in sequence/logic controllers, etc., can solve the problem that the temperature cannot be controlled within a good range and the temperature of the heating device Problems such as overshooting and inability to control the steam opening, etc., to achieve significant control effects, weakened temperature fluctuations, and avoid capital investment

Active Publication Date: 2020-02-11
CHINA TOBACCO JIANGSU INDAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (2) The valve that controls steam cut-off is a shut-off valve, which cannot control the opening of steam, and it is difficult to realize the function of slow heating;
[0006] At present, in terms of temperature control, the existing heating devices generally have problems such as temperature overshoot, failure to control the temperature within a good range, and failure to use the shut-off valve for frequency conversion heating.

Method used

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  • Heating temperature control method for adjusting charging bucket threshold value based on spice liquid weight
  • Heating temperature control method for adjusting charging bucket threshold value based on spice liquid weight

Examples

Experimental program
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Example Embodiment

[0020] Example 1

[0021] A: Add 300Kg of spice liquid to the material tank for use. Set the basic parameters and formulate the calculation threshold in the PLC controller; set the temperature-quality ratio coefficient K according to the equipment situation and process requirements 1 The value is 750, the valve opening time base value K 2 Is 5, the time-quality ratio coefficient K 3 Is 25, and the rectangular wave period t is 30s;

[0022] B: First click the control button "tank heating" on the material tank, the material tank enters the first heating stage, and the steam valve remains open;

[0023] C: Steam into the middle layer of the material tank to heat the perfume liquid to 62~65℃. At this time, the residual heat in the middle layer of the material tank is basically fixed. The mass of the perfume liquid 300Kg is collected through the PLC controller program and substituted into the calculation threshold The formula T=65-750 / M, where M is the quality of the material liquid, and t

Example Embodiment

[0027] Example 2

[0028] A: Add 450Kg of spice liquid to the material tank for use, set the basic parameters and formulate the calculation threshold value in the PLC controller; set the temperature mass ratio coefficient K according to the equipment situation and process requirements 1 The value is 750, the valve opening time base value K 2 Is 5, the time-quality ratio coefficient K 3 Is 25, and the rectangular wave period t is 30s;

[0029] B: First click the control button "tank heating" on the material tank, the material tank enters the first heating stage, and the steam valve remains open;

[0030] C: Steam into the middle layer of the material tank to heat the perfume liquid to 62~65℃. At this time, the residual heat in the middle layer of the material tank is basically fixed. The mass of the perfume liquid 450Kg is collected through the PLC controller program and substituted into the calculation threshold. The formula T=65-750 / M, where M is the quality of the material liquid, a

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Abstract

A heating temperature control method for adjusting a charging bucket threshold value based on the spice liquid weight comprises the following steps: adding the spice liquid into a charging bucket, andsetting K1, t, K2 and K3 according to equipment conditions and process requirements; clicking a charging bucket heating button, allowing the charging bucket to enter a first heating stage, and keeping a steam valve in an open state; providing the formula for calculating the threshold value: T = 65-K1/M, collecting the mass of the spice liquid through a PLC controller program, substituting the mass into the formula to calculate the threshold value T, and closing the steam valve when the temperature reaches the threshold value T; enabling the charging bucket to enter a heat preservation mode; when the temperature of the spice liquid is reduced to 62 DEG C, subjecting the spice liquid to variable-frequency heating, at the moment, the steam valve is opened or closed in a rectangular pulse state; calculating t1 = K2 + M/K3 and t2 = t-t1 through the PLC controller; and stopping pulse variable-frequency heating when the temperature of the spice liquid is increased to 65 DEG C. According to the method, the temperature of the charging bucket can be stably controlled according to different weights of the spice liquid.

Description

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Claims

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Application Information

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Owner CHINA TOBACCO JIANGSU INDAL
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