Process control method for glass plate tempering process

A technology of process and control method, which is applied in glass tempering, glass manufacturing equipment, temperature control, etc., and can solve the problems of energy waste, product quality, cooling fan starting too early, too late, etc.

Active Publication Date: 2020-02-07
洛阳兰迪智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the running time of the cooling fan in the prior art is obtained by estimation, which is most likely to cause the cooling fan to be turned on too early or too late, which is likely to cause waste of energy and unqualified product quality. Provide a glass plate tempering process control method

Method used

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  • Process control method for glass plate tempering process
  • Process control method for glass plate tempering process
  • Process control method for glass plate tempering process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 As shown, taking the total heating power of the electric heating element as an example, the control process of the control method of the present invention is as follows:

[0040] First, determine the heating furnace to be used, adjust the working temperature of the heating furnace according to the type of glass plate to be heated (such as low-emissivity coated glass, clear glass) and thickness information, and run the heating furnace under no-load when the ambient temperature is normal temperature When the working temperature is reached, monitor the total power value of the heating element in this state, measure the total power value at five different times, and calculate the average value of the five values, which is the normal temperature threshold W 常 , and then determine the correction factor M according to the advance operation of the cooling fan W ,M W The range of values ​​is M W ≥1.1, preferably 1.1≤M W ≤1.3. Measure the ambient temperature...

Embodiment 2

[0043] Such as figure 2 As shown, taking the total current of the electric heating element as an example, the control process of the control method of the present invention is as follows:

[0044] First determine the heating furnace to be used, adjust the working temperature of the heating furnace according to the type of glass plate to be heated (such as low-emissivity coated glass, clear glass) and thickness information, and run the heating furnace under no-load operation when the ambient temperature is normal temperature. Working temperature, monitor the total current of the heating element in this state, measure the total current at five different times, and calculate the average value of the five values, the average value is the normal temperature threshold A 常 , and then determine the correction factor M according to the advance operation of the cooling fan A ,M A The range of values ​​is M A ≥1.1, preferably 1.1≤M A ≤1.3. Measure the ambient temperature, and compa...

Embodiment 3

[0047] Such as image 3 As shown, taking the opening ratio of the electric heating element as an example, the control process of the control method of the present invention is as follows:

[0048] First determine the heating furnace to be used, adjust the working temperature of the heating furnace according to the type of glass plate to be heated (such as low-emissivity coated glass, clear glass) and thickness information, and run the heating furnace under no-load operation when the ambient temperature is normal temperature. Working temperature, monitor the opening ratio of the heating element in this state, measure the opening ratio at five different times, and calculate the average value of the five values, the average value is the normal temperature threshold K 常 , and then determine the correction factor M for the cooling fan to run in advance K ,M K The range of values ​​is M K ≥1.1, preferably 1.1≤M K ≤1.3. Measure the ambient temperature, and compare the correction...

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Abstract

A control method for a tempering process of glass plates includes the steps of: 1) after a glass plate is delivered into a heating furnace, monitoring an operation parameter of a heating component by a monitoring unit in real time; 2) performing wave filter treatment to the operation parameter of the heating component; 3) after the wave filter treatment, sending the operation parameter of the heating component to a control unit, which then compares the received operation parameter with a preset threshold value; 4) when the operation parameter passes through an extreme value and then reaches the preset threshold value when changing again, sending a command by the control unit to control a cooling fan to start or switch the cooling fan from idle status into work status. In the method, the operation parameter of the heating component is subjected to real time monitoring after the glass is delivered into the furnace, thereby deciding the starting time of the cooling fan instead of estimating the starting time of the cooling fan by means of time as evidence in conventional methods.

Description

technical field [0001] The invention relates to a glass production process, in particular to a glass plate tempering process control method. Background technique [0002] In the tempering process of the glass plate, firstly, the glass plate is heated to the softening temperature (for example, 600°C to 700°C) in the heating furnace, and then it is quickly taken out of the furnace and enters the tempering section, and the glass plate is cooled rapidly by means of fan blowing Finish tempering. Among them, in order to realize the rapid cooling of the glass plate, the fan must reach a certain speed and generate sufficient wind pressure before the glass plate is released from the furnace. In the prior art, the usual practice is: according to the remaining heating time in the heating process of the glass plate, turn on the fan a certain time in advance or control the fan to change from the idling state to the working state. This control method has the following disadvantages: Firs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B27/04G05D23/20
CPCC03B27/04G05D23/20
Inventor 赵雁窦高峰江春伟
Owner 洛阳兰迪智能科技有限公司
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