CN214335569U

CN214335569U - Kiln roasting kiln temperature rise automatic control system, expansion detection device and kiln

Info

Publication number: CN214335569U
Application number: CN202120085805.6U
Authority: CN
Inventors: 李青; 李赫然; 苏记华; 穆美强; 罗玉松; 黄志军; 代兰天; 郭建军
Original assignee: Dongxu Optoelectronic Technology Co Ltd; Tunghsu Technology Group Co Ltd; Zhengzhou Xufei Optoelectronic Technology Co Ltd
Current assignee: Dongxu Optoelectronic Technology Co Ltd; Tunghsu Technology Group Co Ltd; Zhengzhou Xufei Optoelectronic Technology Co Ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-10-01
Anticipated expiration: 2031-01-13

Abstract

The utility model relates to an automatic control system for the temperature rise of a kiln, wherein the automatic control system comprises an expansion detection device, a controller and a temperature rise device; the expansion detection device detects the expansion amount of the kiln in the heating process of the baking kiln and sends the expansion amount information to the controller, the controller receives the expansion amount of the kiln from the expansion detection device, and when the expansion amount of the kiln reaches a set critical point, the controller sends an adjusting instruction to the heating device to slow down the heating rate of the kiln; also relates to a related device for detecting the temperature rise and expansion of the kiln and the kiln comprising the same.

Description

Kiln roasting kiln temperature rise automatic control system, expansion detection device and kiln

Technical Field

The utility model belongs to the technical application in the field of liquid crystal substrate glass production and manufacturing. In particular to an automatic control system for the temperature rise of a liquid crystal substrate glass kiln, which solves the problems of online monitoring and automatic temperature control of the thermal expansion amount of refractory materials when a newly-built kiln is heated in the kiln.

Background

The kiln for melting glass liquid in the liquid crystal substrate glass manufacturing industry is the core part of the whole manufacturing flow, and generally, the glass kiln needs to be built and maintained in a cold state every 4 to 6 years along with the aging and erosion of refractory materials of a kiln body. When the new glass kiln is started, the temperature of the kiln is increased according to a certain temperature gradient, and the expansion and the burst of a refractory material of a kiln body caused by rapid heating are prevented, so that the structural safety of the kiln is influenced.

The existing kiln heating is realized by manually measuring the expansion amount of each position of a kiln body at regular time, and then the fuel amount of a burning gun of the kiln is calculated and adjusted to ensure that the expansion amount of a refractory material is stabilized in a safe range. The utility model discloses fully consider not enough in the past, measure one set of stroke sensor of installation on the stand of inflation volume all around at the kiln, when the inflation volume is about to surpass the safety range of settlement, stroke sensor feedback signal to PLC controller, PLC controller operation back sends the adjustment command to fuel control system, controls the combustion volume of the roast kiln burning gun to the automatic correction intensification gradient. Thereby the expansion amount of the kiln body is safely and effectively controlled. The body refractory material inflation volume obtains comprehensive management and control when can making the kiln roasting kiln intensification through the device application, avoids causing the expansion of kiln body refractory material to explode because of rapid heating up and splits, influences the structural safety of kiln, security when still having improved personnel's hot state operation, the probability of the emergence incident of reduction personnel and equipment.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present application provides the following technical solutions:

the application provides a kiln roasting kiln temperature rise automatic control system in a first aspect.

In one embodiment, an automatic control system for temperature rise of a kiln is provided, wherein the automatic control system comprises an expansion detection device, a controller and a temperature rise device; the expansion detection device detects the expansion amount of the kiln in the heating process of the baking kiln and sends the expansion amount information to the controller, the controller receives the expansion amount of the kiln from the expansion detection device, and when the expansion amount of the kiln reaches a set critical point, the controller sends an adjusting instruction to the heating device to slow down the heating rate of the kiln.

In yet another embodiment, an automatic control system for raising the temperature of a kiln is provided, wherein,

and when the expansion amount of the kiln reaches a set critical point, the controller corrects the temperature rise gradient and sends an adjusting instruction to a temperature rise device of the kiln.

In yet another embodiment, an automatic control system for increasing temperature of a kiln is provided, wherein the expansion detection device is selected from a pressure sensor or a travel sensor.

In one embodiment, an automatic control system for temperature rise of kiln is provided, wherein the expansion detection device comprises:

the clamping columns are arranged in parallel and are respectively positioned at two ends of the kiln and are vertically arranged close to the kiln when in use;

the pull rod is perpendicular to the clamping column and penetrates through the clamping column through a column hole in the clamping column, and the pull rod can freely move along the column hole;

the expansion spring is sleeved on the pull rod and positioned outside the pair of clamping columns;

the positioning nut is positioned on the pull rod and positioned on the outer side of the expansion spring, and the outer side end of the expansion spring is fixed;

the mounting plate is fixed on the pull rod and is positioned between the expansion spring and the positioning nut;

a sensor disposed on the mounting plate and parallel to the pull rod.

the expansion detection means comprises two or more pairs of capture posts.

In yet another embodiment, an automatic control system for the temperature rise of a kiln is provided, wherein the measuring end of the sensor presses against the kiln.

In one embodiment, an automatic control system for increasing the temperature of a kiln is provided, wherein the sensor sends information of the expansion amount of the kiln to the controller.

In yet another embodiment, an automatic control system for increasing temperature of a kiln is provided, wherein the sensor is selected from a pressure sensor or a travel sensor.

The application provides a kiln roasting kiln intensification inflation detection device in the second aspect.

In one embodiment, the inflation detection device comprises:

at least one pair of clamping columns, wherein the clamping columns are arranged in parallel;

the mounting plate is fixed on the pull rod 5 and is positioned between the expansion spring and the positioning nut;

a sensor disposed on the mounting plate and parallel to the pull rod.

In yet another embodiment, the expansion detection device comprises two or more pairs of capture posts.

In yet another embodiment, the measuring end of the sensor is pressed against the kiln.

In one embodiment, the sensor is selected from a pressure sensor or a travel sensor.

The present application provides, in a third aspect, a kiln.

In one embodiment, a kiln is provided, wherein the kiln comprises the automatic control system for heating of the kiln.

The technical scheme of the application provides the following beneficial technical effects:

the utility model has the advantages of simple structure and practicality, use and maintain the convenience, it is with low costs. The body refractory material inflation volume obtains comprehensive management and control when can making the kiln roasting kiln intensification through the device application, avoids causing the expansion of kiln body refractory material to explode because of rapid heating up and splits, influences the structural safety of kiln, security when still having improved personnel's hot state operation, the probability of the emergence incident of reduction personnel and equipment.

Drawings

FIG. 1 shows a perspective view of a kiln firing expansion detection device according to the present application;

fig. 2 shows a schematic diagram of an automatic control system for the temperature rise of a kiln according to the present application.

Description of the reference numerals

1-1 kiln burning gun 1-2 locking nut

1-3 stroke sensor 1-4 mounting plate

1-5 pull rod 1-6 expansion spring

1-7 adjusting nut 1-8 kiln body

1-9 steel-structure upright post 1-10 plugging brick

2-1 fuel control system 2-2 industrial control computer

2-4 stroke detection device of 2-3 PLC controller

2-5 baking gun for kiln

Detailed Description

It should be noted that certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, various names may be used to refer to a component. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The following description is of the preferred embodiment of the invention, and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the invention. The protection scope of the present invention is subject to the limitations defined by the appended claims.

In the context of this specification, an "automatic control system" is defined generally in the field of automatic control technology, and means that some automatic control devices are used to automatically control some critical parameters in production so that they can be automatically adjusted back to the value range required by the process when they deviate from normal conditions due to external disturbances (disturbances). Various process conditions cannot be unchanged during the production process. Especially chemical production, mostly continuous production, the equipments are related to each other, when the process condition of one of them changes, it may cause some parameters in other equipments to fluctuate more or less, deviating from the normal process condition. Of course, auto-regulation means that no direct human involvement is required.

According to different control principles, automatic control systems are divided into open-loop control systems and closed-loop control systems. In the open-loop control system, the system output is controlled only by the input, and the control accuracy and the characteristics of suppressing the interference are poor. Among open loop control systems, those based on sequential logic control are called sequential control systems; the device consists of a sequence control device, a detection element, an execution mechanism and a controlled industrial object. The device is mainly applied to control of processes such as machinery, chemical engineering, material loading, unloading and transportation, manipulators and automatic production lines. The closed-loop control system is based on the feedback principle, and the deviation of the output quantity and the expected value is used for controlling the system, so that better control performance can be obtained. Closed loop control systems are also known as feedback control systems. The technical scheme of the utility model belongs to closed-loop control system.

In one embodiment, the inflation detection device comprises:

the pull rod is perpendicular to the 5 clamping columns, penetrates through the clamping columns through column holes in the clamping columns and can freely move along the column holes;

a sensor disposed on the mounting plate and parallel to the pull rod.

The present application provides, in a third aspect, a kiln.

In the context of the present specification, a "furnace" is in accordance with the general definition in the glass manufacturing field, which is also referred to as a furnace, meaning a furnace for firing glass materials to a molten state. It is generally built with bricks or stones, can be made into various sizes according to requirements, and can be operated by adopting combustible gas, oil or electricity. Electric kilns are easier to control temperature than kilns using combustible gases and oils. The temperature in the kiln is measured by a PYROMETER (PYROMETER) or a temperature cone (PYROMETRIC CONES), and the inside of the kiln can be seen through the peephole. Because the inside temperature cost of direct measurement kiln is higher the utility model discloses in, the condition of being heated of kiln obtains through the inflation state of measuring the kiln.

< example >

Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While specific embodiments of the invention are shown in the drawings, it will be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Embodiment 1 assemble out including the utility model discloses an automatic control system's kiln

As shown in fig. 1 and 2, a kiln comprising an automatic control system for the kiln heating of liquid crystal substrate glass is provided, which comprises (fig. 1): 1-1 baking gun, 1-2 locking nut, 1-3 stroke sensor, 1-4 mounting plate, 1-5 pull rod, 1-6 expansion spring, 1-7 adjusting nut, 1-8 kiln body, 1-9 steel structure column, 1-10 brick and other parts form 5; and a 2-1 fuel control system, a 2-2 industrial control computer, a 2-3 PLC controller, a 2-4 stroke detection device and a 2-5 kiln burning gun in a control system schematic diagram (figure 2). The device is characterized in that pull rods 1-5, expansion springs 1-6 and adjusting nuts 1-7 are mounted on steel structure upright columns 1-9 on the periphery of a kiln body 1-8 and used for fixing and adjusting refractory materials of the kiln, mounting plates 1-4 are mounted on the lower portions of the expansion springs 1-6, and a stroke sensor 1-3 is fixed on the mounting plates 1-4 through locking nuts 1-2 to detect 10 expansion amount. The kiln burning gun 1-1 heats the kiln. A set of stroke detection devices 2-4 are mounted on upright columns for measuring the expansion amount around the kiln, when the expansion amount of the kiln body 1-8 is about to exceed a set safe range, the stroke detection devices 2-5 feed back signals to a PLC (programmable logic controller) 2-3, the PLC 2-3 sends an adjusting instruction to a fuel control system 2-1 after operation to control the combustion amount of a baking gun assembly 2-5 of the baking kiln, the heating rate of the baking kiln is reduced, and the heating gradient is automatically corrected, so that the expansion amount 15 of the kiln body 1-8 is safely and effectively controlled.

The automatic control system for the temperature rise of the liquid crystal substrate glass kiln is provided with a stroke detection device 2-4, and the principle is that the lower part of an expansion spring 1-6 is provided with a mounting plate 1-4, a stroke sensor 1-3 is fixed on the mounting plate 1-4 through a locking nut 1-2 to detect the expansion amount, and the stroke sensor requires the measurement length range of 350-800 mm.

The automatic control system for the heating of the liquid crystal substrate glass kiln is characterized in that pull rods 1-5, expansion springs 1-6 and adjusting nuts 1-7 are arranged on steel structure upright columns 1-9 on the periphery of a kiln body 1-8 and used for fixing and adjusting refractory materials of the kiln. The pretightening force of the expansion spring 1-6 is adjusted by adjusting the position of the adjusting bolt 1-7.

According to the automatic control system for the heating of the liquid crystal substrate glass kiln, a set of stroke detection devices 2-4 are mounted on the upright columns for measuring the expansion amount around the kiln, when the expansion amount of a kiln body 1-8 is about to exceed a set safety range, the stroke detection devices 2-5 feed back signals to the PLC 2-3, and the PLC 2-3 sends an adjusting instruction to the fuel control system 2-1 after operation to control the combustion amount of a burning gun assembly 2-5 of the kiln, slow the heating rate of the kiln and automatically correct the heating gradient.

The fuel control system 2-1 on the automatic control system for the temperature rise of the liquid crystal substrate glass kiln is a device for controlling the combustion of natural gas and pure oxygen, and can carry out precise proportioning of the natural gas and the oxygen. The roasting gun 1-1 of the roasting kiln is made of heat-resistant special stainless steel and can resist the temperature of 1200 ℃.

Embodiment 2 trial run including the utility model discloses an automatic control system's kiln

Firstly, the fuel flow of a spray gun is opened to the maximum level to heat the kiln, a stroke detection device 2-5 is arranged on a column for measuring the expansion amount around the kiln, when the expansion amount of the kiln body 1-8 is about to exceed a set safety range, the stroke detection device 2-5 feeds back a signal to a PLC (programmable logic controller) 2-3, and the PLC 2-3 sends an instruction of 5 adjustment to a fuel control system 2-1 after operation to control the combustion amount of a burning gun assembly 2-5 of the baking kiln and slow down the heating rate of the baking kiln.

Then, the fuel flow of the spray gun is switched to the minimum level to heat the kiln, the upright columns for measuring the expansion amount around the kiln are provided with stroke detection devices 2-5, when the kiln body 1-8 contracts to be out of the set safety range, the stroke detection devices 2-5 feed back signals to the PLC 2-3, and the PLC 2-3 sends out an adjusting instruction to the fuel control system 2-1 after operation to control the combustion amount of the burning gun assembly 2-5 of the baking kiln and accelerate the heating rate of the baking kiln.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments and application fields, and the above-described embodiments are illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope of the invention as defined by the appended claims.

Claims

1. An automatic control system for heating of a kiln is characterized by comprising an expansion detection device, a controller and a heating device;

the expansion detection device detects the expansion amount of the kiln in the heating process of the baking kiln and sends the expansion amount information to the controller, the controller receives the expansion amount of the kiln from the expansion detection device, and when the expansion amount of the kiln reaches a set critical point, the controller sends an adjusting instruction to the heating device to slow down the heating rate of the kiln.

2. The automatic control system for the temperature rise of the kiln according to claim 1, wherein the controller corrects the temperature rise gradient and gives an adjustment instruction to a temperature rise device of the kiln when the expansion amount of the kiln reaches a set critical point.

3. The automatic control system for increasing the temperature of a kiln according to claim 1 or 2, wherein the expansion detecting means is selected from a pressure sensor or a stroke sensor.

4. The automatic control system for temperature rise of kiln and furnace according to claim 1 or 2, wherein the expansion detecting means comprises:

a sensor disposed on the mounting plate and parallel to the pull rod.

5. The automatic control system for temperature rise in kiln according to claim 4, wherein said expansion detecting means comprises two or more pairs of catch columns.

6. The automatic control system for controlling the temperature rise of the kiln according to claim 4, wherein the measuring end of the sensor presses the kiln.

7. The automatic control system for controlling the temperature rise of the kiln according to claim 4, wherein the sensor transmits information on the expansion amount of the kiln to the controller.

8. The automatic control system for increasing the temperature of a kiln according to claim 4, wherein the sensor is selected from a pressure sensor or a travel sensor.

9. The utility model provides a kiln roasting kiln intensification inflation detection device which characterized in that, this inflation detection device includes:

the expansion 5 expansion spring is sleeved on the pull rod and positioned outside the pair of clamping columns;

a sensor disposed on the mounting plate and parallel to the pull rod.

10. The kiln and furnace warming expansion detecting device according to claim 9, wherein the expansion detecting device comprises two or more pairs of catch posts.

11. The apparatus for detecting the expansion of a kiln as claimed in claim 9, wherein the measuring end of the sensor is pressed against the kiln.

12. The apparatus for detecting elevated temperature and expansion of a kiln and a furnace as claimed in claim 9, wherein the sensor is selected from a pressure sensor and a stroke sensor.

13. A kiln, characterized in that the kiln comprises an automatic control system for the kiln firing temperature according to any one of claims 1 to 8.