Automatic protection structure of gas valve of sintering machine

Abstract

The utility model discloses an automatic protection structure of a gas valve of a sintering machine, which can timely monitor the working conditions of a furnace and a preheating furnace and ensure the production safety, and comprises an ignition furnace and a preheating furnace which are arranged on the sintering machine, an ignition furnace probe hole and an ignition furnace sensor are respectively arranged on the ignition furnace, and a preheating furnace probe hole and a preheating furnace sensor are respectively arranged on the preheating furnace; the two sensors are respectively connected with the sensor control instrument, and the sensor control instrument is connected with the upper computer through the PLC control cabinet; an ignition furnace air valve, an ignition furnace gas valve, a preheating furnace air valve and a preheating furnace gas valve are respectively arranged on the ignition furnace and the preheating furnace which are connected with the gas pipeline and the air pipeline, and the four valves are respectively connected with the PLC control cabinet.

Description

Technical Field

[0001] The utility model relates to an automatic protection structure of a sintering machine gas valve, belonging to the technical field of sintering and smelting electrical control in the metallurgical industry. Background Art

[0002] Sintering machine is an important equipment widely used in metallurgy, building materials, chemical industry and other industries. Its combustion process has an important impact on production efficiency and product quality. However, in the actual operation of the sintering machine, the ignition gas valve usually has fluctuations in the gas external network, which causes the burning flame to go out. Personnel cannot monitor the flame status on site, so the valve cannot be closed effectively and continues to supply gas to the combustion chamber, resulting in unstable combustion. Before the flame reignites, a large amount of gas accumulates in the combustion chamber. When the calorific value of the gas is low and there is no open flame, it will cause gas leakage, causing accidents such as gas poisoning or flash explosion. Therefore, the development of a device that can automatically protect the gas valve of the sintering machine is of great significance to improving production safety efficiency and ensuring product quality. Summary of the invention

[0003] The main purpose of the utility model is to improve the intrinsic safety of a sintering machine and to provide an automatic protection structure for a gas valve of a sintering machine.

[0004] The utility model provides a technical solution: an automatic protection structure for a sintering machine gas valve, comprising an ignition furnace and a preheating furnace installed on the sintering machine, wherein the ignition furnace is respectively provided with an ignition furnace detection hole and an ignition furnace sensor, and the preheating furnace is respectively provided with a preheating furnace detection hole and a preheating furnace sensor; the two sensors are respectively connected to a sensor controller, and the sensor controller is connected to a host computer through a PLC control cabinet; the ignition furnace and the preheating furnace connected to a gas pipeline and an air pipeline are respectively provided with an ignition furnace air valve, an ignition furnace gas valve, a preheating furnace air valve and a preheating furnace gas valve, and the four valves are respectively connected to the PLC control cabinet.

[0005] The sensor is used to monitor the flame in the combustion chamber; the controller analyzes and processes the data collected by the sensor. When an abnormal situation is found, the control signal is issued in time and the control signal is introduced into the upper computer PLC. When the PLC collects the abnormal signal, it is compared to the valve cut-off instruction and output to the valve control actuator. When the valve actuator receives the control signal of the valve cut-off instruction, it automatically cuts off the valve device to ensure the gas interruption of the sintering machine and ensure safe production.

[0006] Compared with the existing technology, the automatic protection function of the utility model is more perfect: the device can monitor the operating status of the combustion in real time, detect and deal with abnormal conditions in time, and avoid production accidents caused by unstable combustion; safety and reliability: the automatic protection device of the sintering machine gas valve does not require personnel to enter the high-risk environment to operate on site, which improves safety and reliability and can reduce the operating risks of burns, gas poisoning, etc. for operators; simple operation and convenient maintenance: the device can automatically analyze the conditions for automatic valve cut-off without manual intervention, reducing the difficulty of operation and maintenance costs; improve production efficiency and product quality: stable combustion conditions help to improve production efficiency and product quality, and bring better economic benefits to enterprises. Through the implementation of this technology, the combustion valve of the sintering machine will be better protected, which can effectively increase the temperature in the ignition furnace and preheating furnace and save time in operation. At the same time, it can avoid personnel from being exposed to high-risk environments during operation, reduce the risk factor of operators, and effectively improve operation security. In the use of flame detection, the unmonitored flame can quickly and effectively cut off the quick-cut valve to avoid major dangers such as backfire, flash explosion, and poisoning. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the connection structure of the utility model.

[0008] In the figure: sintering machine 1, ignition furnace 2, preheating furnace 3, gas pipeline 4, air pipeline 5, ignition furnace air valve 6, ignition furnace gas valve 7, preheating furnace air valve 8, preheating furnace gas valve 9, ignition furnace sensor 10, ignition furnace detection hole 11, preheating furnace sensor 12, preheating furnace detection hole 13, sensor controller 14, PLC control cabinet 15, host computer 16. Implementation

[0009] An automatic protection structure for a sintering machine gas valve, such as Figure 1 As shown, an ignition furnace 2 and a preheating furnace 3 are installed on a sintering machine 1, and an ignition furnace detection hole 11 and an ignition furnace sensor 10 are respectively provided on the ignition furnace 2, and a preheating furnace detection hole 13 and a preheating furnace sensor 12 are respectively provided on the preheating furnace 3; the two sensors 10 and 12 are respectively connected to a sensor controller 14, and the sensor controller 14 is connected to a host computer 16 through a PLC control cabinet 15; an ignition furnace air valve 6, an ignition furnace gas valve 7, a preheating furnace air valve 8 and a preheating furnace gas valve 9 are respectively provided on the ignition furnace 2 and the preheating furnace 3 connected to the gas pipeline 4 and the air pipeline 5, and the four valves are respectively connected to the PLC control cabinet 15.

[0010] The working principle of the device is as follows:

[0011] 1. When the sintering machine 1 is in operation, the ignition furnace 2 and the preheating furnace 3 are connected through the gas pipeline 4 and the air pipeline 5 to mix and burn the energy media;

[0012] 2. The ignition furnace sensor 10 monitors the parameters of the combustion flame through the ignition furnace detection hole 11 and transmits the data to the sensor controller 14;

[0013] 3. Similarly, the preheating furnace sensor 12 measures the parameters of the combustion flame through the preheating furnace detection hole 13, and transmits the data to the sensor controller 14;

[0014] 4. The sensor controller 14 processes and analyzes the data to determine whether the flame in the combustion chamber is normal and whether the valve is operating normally, and introduces the signal into the PLC control cabinet 15, and the upper computer 16 displays the combustion status and valve status;

[0015] 5. If the ignition furnace sensor 10 finds an abnormality, the sensor controller 14 provides an abnormal signal to the PLC control cabinet 15, and the PLC program compares and sends a cut-off signal, and the actuator ignition furnace air valve 6 and ignition furnace gas valve 7 are immediately cut off;

[0016] 6. Similarly: when the preheating furnace sensor 12 finds an abnormality, the sensor controller provides an abnormal signal to the PLC control cabinet 15 14, and the PLC program compares and sends a cut-off signal, and the actuator preheating furnace air valve 8 and preheating furnace gas valve 9 are immediately cut off;

[0017] 7. If the combustion chamber flame abnormality persists, the controller will sound an alarm and record the fault information for subsequent processing.

Claims

1. An automatic protection structure for a sintering machine gas valve, comprising an ignition furnace and a preheating furnace installed on the sintering machine, Its characteristics are: The ignition furnace is provided with an ignition furnace detection hole and an ignition furnace sensor, and the preheating furnace is provided with a preheating furnace detection hole and a preheating furnace sensor; the two sensors are connected to the sensor controller respectively, and the sensor controller is connected to the host computer through the PLC control cabinet; the ignition furnace and the preheating furnace connected to the gas pipeline and the air pipeline are respectively provided with an ignition furnace air valve, an ignition furnace gas valve, a preheating furnace air valve and a preheating furnace gas valve, and the four valves are respectively connected to the PLC control cabinet.

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