Anti-interference temperature measuring device for blast furnace body

Abstract

The utility model relates to the technical field of monitoring, and particularly provides an anti-interference temperature measuring device for a blast furnace body, which is characterized in that an electrolytic capacitor, a surge protection device and other components are connected in parallel, electrostatic interference is released by means of the alternating current function of the electrolytic capacitor, and the surge protection device has the characteristics of high voltage and low impedance and low voltage and high impedance. Therefore, electronic devices in the whole temperature measurement system are protected from interference, temperature measurement signals are guaranteed not to be affected by interference, temperature measurement data are collected by the thermocouple temperature signal collector, converted by the data switch and then transmitted to the monitoring display industrial personal computer, and the monitoring display industrial personal computer is used for displaying the temperature measurement data. The real-time temperature of each sensor on site is monitored.

Description

Technical Field

[0001] This utility model relates to the field of measurement, specifically to an anti-interference temperature measuring device for blast furnace body. Background Technology

[0002] Blast furnace body temperature measurement is crucial in the blast furnace smelting process. The blast furnace body temperature reflects the working state of the hearth and the adhesion and slag shedding of the furnace walls. Combining the analysis of the furnace body temperature with the blast furnace condition performance plays a vital role in stabilizing blast furnace operation and formulating reasonable operating policies. In actual blast furnace smelting, the temperature measurement systems for each layer of the blast furnace body are frequently affected by electrostatic interference and electromagnetic interference, resulting in inaccurate temperature readings at various levels. This seriously affects the accuracy of blast furnace body temperature measurements and impacts blast furnace operation. Therefore, a device is designed to measure the furnace body temperature while overcoming the inaccuracies caused by electrostatic and electromagnetic interference. Utility Model Content

[0003] To address the problems of existing technologies, the purpose of this utility model is to provide an anti-interference temperature measurement device for blast furnace body, so as to solve the problem that the influence of the on-site environment can cause inaccurate temperature measurement of blast furnace equipment.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An anti-interference temperature measurement device for blast furnace body includes a blast furnace body, characterized in that: a K-type thermocouple is connected inside the blast furnace body, the K-type thermocouple is connected to a thermocouple junction box, the thermocouple junction box is connected in parallel with a surge protector through a K-type compensating wire, the output terminal of the surge protector is connected to a thermocouple temperature signal acquisition device, the thermocouple temperature signal acquisition device is connected to a data exchange, and the data exchange is connected to a monitoring and display industrial control computer.

[0006] Preferably, an electrolytic capacitor is connected in parallel between the thermocouple junction box and the surge protector.

[0007] Preferably, the outer layer of the K-type compensating conductor is provided with a compensating conductor shielding layer.

[0008] Preferably, the grounding terminal of the surge protector is connected to a grounding busbar, and the grounding busbar is connected to the grounding electrode.

[0009] The beneficial effects of this utility model are as follows:

[0010] This utility model discloses an anti-interference temperature measurement device for blast furnace body. The electrolytic capacitor connected to the device releases AC power, and the surge protector can handle situations with low high voltage impedance and high low voltage impedance at the work site. When an instantaneous overvoltage event occurs due to environmental interference, it can also quickly limit the voltage amplitude, thereby protecting electronic equipment from damage and ensuring that the temperature measurement signal is not affected by static electricity or electromagnetic interference at the site. The temperature measurement data is transmitted to the monitoring and display industrial control computer through a data exchange to monitor the real-time temperature, historical curves, equipment operating status, fault information, etc. of each sensor at the site, which helps monitoring personnel to make timely feedback on the monitoring data. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] 1. Blast furnace body; 2. Type K thermocouple; 3. Thermocouple junction box; 4. Type K compensating wire; 5. Electrolytic capacitor; 6. Shielding layer of compensating wire; 7. Surge protector; 8. Thermocouple temperature signal acquisition device; 9. Data exchange; 10. Monitoring and display industrial control computer; 11. Grounding busbar; 12. Grounding electrode. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figure 1 The utility model shown is a blast furnace body anti-interference temperature measurement device. One end of a K-type thermocouple 2 is connected inside the blast furnace body 1. The other end of the K-type thermocouple 2 is connected to a thermocouple junction box 3. The thermocouple junction box 3 is connected to a K-type compensating wire 4. The K-type compensating wire 4 is connected to an electrolytic capacitor 5. A compensating wire shielding layer 6 is provided on the outer layer of the K-type compensating wire 4. The electrolytic capacitor 5 is connected to the input terminal of a surge protector 7. The output terminal of the surge protector 7 is connected to a thermocouple temperature signal acquisition device 8. The thermocouple temperature signal acquisition device 8 is connected to a data exchange 9. The data exchange 9 is connected to a monitoring and display industrial control computer 10.

[0015] Electrolytic capacitors 5 are connected in parallel to the input terminal of surge protector 7. The outer layer of the K-type compensating wire 4 has a compensating wire shielding layer 6, which can cancel out some magnetic field interference and effectively shield some of the static electricity and electromagnetic interference generated by high-power electrical equipment on site. Through electrolytic capacitors 5, the static electricity and electromagnetic interference signals from the work site are released by the electrolytic capacitors 5 through their conduction function. The surge protector 7 has high voltage and low impedance, and low voltage and high impedance characteristics, which can effectively absorb and limit instantaneous overvoltage caused by static electricity, electromagnetic interference, etc., quickly conduct and limit the voltage amplitude, and limit the voltage within the range that the equipment can withstand, thereby protecting the electronic components in the entire temperature measurement system from electromagnetic and static interference, and reducing the impact of electromagnetic interference and static interference signals on temperature measurement. The temperature measurement data is collected by thermocouple temperature signal acquisition device 8, and after being converted by data exchange 9, it is transmitted to monitoring and display industrial control computer 10 to monitor the real-time temperature and historical curves of each sensor on site, which helps monitoring personnel to make timely feedback on the monitoring data.

[0016] The grounding terminal of surge protector 7 is connected to grounding bus 11, which is connected to grounding electrode 12. Grounding electrode 12 is connected to the ground, effectively eliminating series-mode and common-mode interference on the overall line.

[0017] When the blast furnace operation begins, the temperature measuring components are turned on simultaneously. The K-type thermocouple 2 measures the temperature of the blast furnace body 1 in real time. After passing through the electrolytic power supply 5 and the surge protector 7, electrostatic interference and electromagnetic interference are reduced or eliminated. The temperature data measured by the K-type thermocouple 2 is transmitted to the data exchange 9. The data exchange 9 uploads the temperature data to the monitoring and display industrial control computer 10. The large screen of the monitoring and display industrial control computer 10 displays the real-time temperature of the blast furnace body 1, historical temperature curves, equipment status, and other data, allowing the monitoring operators to react promptly based on the data changes on the monitoring and display industrial control computer 10.

[0018] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A blast furnace body anti-interference temperature measuring device, comprising a blast furnace body, characterized in that: The blast furnace body (1) is internally connected to a K-type thermocouple (2), the K-type thermocouple (2) is connected to a thermocouple junction box (3), the thermocouple junction box (3) is connected in parallel to a surge protector (7) through a K-type compensating wire (4), the output end of the surge protector (7) is connected to a thermocouple temperature signal acquisition device (8), the thermocouple temperature signal acquisition device (8) is connected to a data exchange (9), and the data exchange (9) is connected to a monitoring and display industrial control computer (10).

2. The blast furnace body anti-interference temperature measuring device according to claim 1, characterized in that: An electrolytic capacitor (5) is connected in parallel between the thermocouple junction box (3) and the surge protector (7).

3. The blast furnace body anti-interference temperature measuring device according to claim 1, characterized in that: The outer layer of the K-type compensating conductor (4) is provided with a compensating conductor shielding layer (6).

4. The blast furnace body anti-interference temperature measuring device according to claim 3, characterized in that: The grounding terminals of the compensation conductor shielding layer (6) and surge protector (7) are connected to the grounding bus (11), which is connected to the grounding electrode (12).

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