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Method for controlling tempering process of glass plate

A technology of process and control method, applied in electrical program control, comprehensive factory control and other directions, can solve problems such as energy waste, reduce energy consumption, reduce labor costs, and improve the quality of finished products

Active Publication Date: 2018-01-09
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 in the prior art, when using a temperature sensor to directly monitor the internal temperature of the heating furnace, because the area of ​​the heating furnace is too large, only the local temperature of the heating furnace can be detected and the overall temperature of the furnace cannot be guaranteed to reach the required temperature. The temperature of the glass entering the furnace, so the way of delaying heating is often adopted, which is easy to cause the waste of energy. A method for controlling the time of entering the furnace in the tempering process of the glass plate is provided.

Method used

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  • Method for controlling tempering process of glass plate

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Effect test

Embodiment 1

[0037] Such as figure 1 As shown, taking the total heating power of the electric heating element as an example, the control process of the heating control method of the present invention is as follows:

[0038] 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, which is the preheating temperature, and set the heating furnace at ambient temperature to normal temperature Under no-load operation to reach the working temperature, monitor the total power value of the heating element in this state, and measure the total power value at five different times, and calculate the average value of the five values, the average value is the standard threshold W 0 , measure the ambient temperature, and compare the correction coefficient table (the correction coefficient in this table is obtained by the following cal...

Embodiment 2

[0041] Such as figure 2 As shown, taking the total current of the electric heating element as an example, the control process of the heating control method of the present invention is as follows:

[0042] 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, which is the preheating temperature, and set the heating furnace at ambient temperature to normal temperature Under no-load operation to reach the working temperature, monitor the total current of the heating element in this state, and measure the total current at five different times, and calculate the average value of the five values, the average value is the standard threshold A 0 , measure the ambient temperature, and compare the correction coefficient table (the correction coefficient in this table is obtained by the following calculation met...

Embodiment 3

[0045] Such as image 3 As shown, taking the opening ratio of the electric heating element as an example, the control process of the heating control method of the present invention is as follows:

[0046] 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, which is the preheating temperature, and set the heating furnace at room temperature , no-load operation reaches the working temperature, monitor the opening ratio of the heating element in this state, and measure the opening ratio at five different times, and calculate the average value of the five values, and the average value is the standard threshold K 0 , measure the ambient temperature, and compare the correction coefficient table (the correction coefficient in this table is obtained by the following calculation method: respectively detect the...

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Abstract

Disclosed is a method for controlling the tempering process of a glass plate. In the heating process of a heating furnace, a monitoring unit monitors a working parameter of a heating element in real time, filters the working parameter of the heating element and then transmits the filtered working parameter of the heating element to a control unit, the control units compares the received working parameter of the heating element with a set threshold, when the working parameter of the heating element reaches the set threshold in the first change process after reaching the maximum or minimum, thecontrol unit sends an instruction to a driving mechanism, and the driving mechanism acts to directly feed the glass plate into the heating furnace or delays to feed the glass plate into the heating furnace. The method changes the traditional control method based on time, and can controls the heating process of the heating furnace more scientifically and accurately.

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, the glass plate is first heated to the softening temperature (for example, 600°C to 700°C), and then the tempering process is completed by rapid cooling, among which, the heating of the glass plate is an important process . According to the process requirements, before the glass plate is transported into the heating furnace, the heating furnace in the cold state or heat preservation state must be heated to the set temperature. In the prior art, the conventional method is: firstly, preset the temperature value achieved by heating according to the type, thickness and past operating experience of the glass plate; then, when the measurement result of the temperature sensor in the furnace reaches the set temperature value, In order to eliminate the influence of meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCC03B29/08
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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