Intermediate frequency furnace operation safety monitoring device

Abstract

The utility model relates to an intermediate frequency furnace operation safety monitoring device in the technical field of intermediate frequency furnace equipment, which comprises an intermediate frequency furnace and a control center, the intermediate frequency furnace is connected with a water cooling system, and a water inlet flowmeter and a water inlet temperature sensor are arranged on a water inlet pipe of a circulating water pipe of the water cooling system. A water outlet flow meter and a water outlet temperature sensor are arranged on a water outlet pipe of the circulating water pipe; thermal infrared imagers are further arranged outside the intermediate frequency furnace in a matched mode, and the number of the thermal infrared imagers is at least two; the water inlet flow meter, the water inlet temperature sensor, the water outlet flow meter, the water outlet temperature sensor and the thermal infrared imager are all electrically connected with the control center. The device can monitor the temperature change condition of components of the intermediate frequency furnace in real time, can detect the temperature and flow change condition of circulating water, and can discover the leakage and temperature abnormity conditions of the circulating water in time. And emergency treatment by workers is facilitated, the safety is improved, and the loss is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medium frequency furnace equipment, and in particular relates to a medium frequency furnace operation safety monitoring device. Background Art

[0002] The medium frequency furnace in the anode assembly workshop of the carbon plant is used to heat phosphorus iron rings and pig iron. The temperature of molten iron out of the furnace is 1350-1450 degrees, and the maximum working temperature can reach 1600 degrees. As a high-temperature heating equipment, there are high equipment and safety risks during operation. Generally, the medium frequency furnace is connected to a cooling water system. During the pouring and smelting process, the furnace lining status and the cooling water system status are observed at regular intervals, and the number of inspections is increased under special circumstances. The inspection personnel work frequently and the labor intensity is high, but they still cannot achieve uninterrupted and continuous monitoring of the equipment status. In addition, in the early stage of cable heating and furnace lining damage, the temperature change is not significant, and ordinary inspections cannot be discovered in time, and the danger cannot be eliminated in the bud. Once an abnormal condition such as a leaking furnace (circulating water leakage) occurs between two inspections, it is easy to miss the opportunity for emergency disposal, resulting in serious consequences such as personal injury and property loss. Therefore, a medium frequency furnace operation safety monitoring device is needed to solve the above technical problems. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the utility model provides a medium frequency furnace operation safety monitoring device, including a medium frequency furnace and a control center, wherein the medium frequency furnace is connected to a water cooling system, wherein the water cooling system includes a circulating water pipe arranged on the medium frequency furnace, wherein a water inlet flow meter and a water inlet temperature sensor are arranged on the water inlet pipe of the circulating water pipe, and a water outlet flow meter and a water outlet temperature sensor are arranged on the water outlet pipe of the circulating water pipe;

[0004] The intermediate frequency furnace is also equipped with an infrared thermal imager. At least two infrared thermal imagers are provided. Each infrared thermal imager is evenly distributed along the circumference of the intermediate frequency furnace, and the camera of the infrared thermal imager faces the outside of the intermediate frequency furnace.

[0005] The water inlet flow meter, water inlet temperature sensor, water outlet flow meter, water outlet temperature sensor and infrared thermal imager are all electrically connected to the control center.

[0006] Preferably, the infrared thermal imager is arranged on a bracket, and the bracket includes a vertical guide rod and a vertical screw rod, the lower end of the screw rod is connected to a forward and reverse motor 1, the screw rod is threaded with a movable plate, the movable plate is provided with a guide hole, the guide rod passes through the guide hole, the upper surface of the movable plate is provided with a mounting plate, the lower surface of the mounting plate is fixedly connected with a forward and reverse motor 2, the forward and reverse motor 2 is fixed on the movable plate, and the infrared thermal imager is mounted on the mounting plate. The arrangement here can drive the movable plate to move up and down by the forward and reverse rotation of the forward and reverse motor 1, so that the infrared thermal imager can be moved up and down, so as to monitor different parts of the medium frequency furnace, and at the same time, the forward and reverse rotation of the forward and reverse motor 2 can rotate the mounting plate, so as to change the monitoring range of the infrared thermal imager and improve the detection range.

[0007] Preferably, a vertical connecting shaft is fixed on the mounting plate, the bottom of the infrared thermal imager is hingedly connected to the top of the connecting shaft, an electric push rod is hingedly connected to one end of the infrared thermal imager away from the camera, and the other end of the electric push rod is hingedly connected to the mounting plate. This arrangement allows the camera of the infrared thermal imager to be fine-tuned up and down by extending and retracting the electric push rod, which is conducive to adjusting the detection range and improving the detection effect.

[0008] The utility model also includes other components that enable a medium frequency furnace operation safety monitoring device to be used normally, such as a control component of a forward and reverse motor 1, a control component of a forward and reverse motor 2, a control component of an infrared thermal imager, a control component for controlling the inlet and outlet of a cooling water system, a control component of an electric push rod, a control component of an inlet water temperature sensor, a control component of an outlet water temperature sensor, etc., which are all commonly used equipment in the field and are conventional technical means in the field. In addition, the devices or components not limited in the utility model, such as a cooling water system, an electric push rod, an infrared thermal imager, a control center, an inlet water temperature sensor, an inlet water flow meter, an outlet water flow meter, an outlet water temperature sensor, etc., all adopt conventional technical means and conventional equipment in the field.

[0009] Working principle: Through the infrared thermal imaging temperature measurement of the infrared thermal imager, the temperature of the medium frequency furnace is monitored in real time to realize abnormal temperature alarm prompts. By flexibly arranging multiple infrared thermal imagers according to needs, multiple regular temperature measurement methods such as points, lines, and frames can be realized, which is flexible, convenient and fast to use. By adding an inlet flow meter and an inlet temperature sensor to the water inlet pipe of the water cooling system connected to the medium frequency furnace, and installing an outlet flow meter and an outlet temperature sensor on its outlet pipe, the temperature and flow status of the medium frequency furnace circulating water system can be detected online. The temperature changes of the medium frequency furnace components can be monitored in real time, and the circulating water temperature and flow changes can also be detected, and circulating water leaks and abnormal temperatures can be discovered in time. It is convenient for workers to handle emergencies, improves safety, and reduces losses.

[0010] The beneficial effects of the utility model are: it can monitor the temperature changes of the medium frequency furnace components in real time, and can detect the circulating water temperature and flow changes, and timely discover circulating water leakage and abnormal temperature. It is convenient for workers to carry out emergency treatment, improves safety, and reduces losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 This is a structural schematic diagram of a medium frequency furnace operation safety monitoring device in Example 1;

[0013] Figure 2 This is a structural schematic diagram of a medium frequency furnace operation safety monitoring device in Example 2.

[0014] In the figure: 1. Crucible; 2. Excitation coil; 3. Infrared thermal imager; 4. Water outlet main pipe; 5. Water inlet main pipe; 6. Water inlet flow meter; 7. Water outlet flow meter; 8. Water outlet temperature sensor; 9. Water inlet temperature sensor; 10. Forward and reverse motor 1; 11. Screw; 12. Guide rod; 13. Moving plate; 14. Forward and reverse motor 2; 15. Mounting plate; 16. Electric push rod. DETAILED DESCRIPTION

[0015] The present invention is described in detail below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description here is only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the present invention.

[0016] Example 1

[0017] like Figure 1 As shown, the utility model provides a medium frequency furnace operation safety monitoring device, including a medium frequency furnace and a control center, a crucible 1 is arranged in the medium frequency furnace, an excitation coil 2 is arranged outside the medium frequency furnace, the medium frequency furnace is connected to a water cooling system, the water cooling system includes a circulating water pipe arranged on the medium frequency furnace, a water inlet temperature sensor 9 is arranged on the water inlet pipe of the circulating water pipe, and a water outlet temperature sensor 8 is arranged on the water outlet pipe of the circulating water pipe; the water inlet pipe is provided with a plurality of water inlet pipes, and the plurality of water inlet pipes are connected to the same water inlet main pipe, the water inlet main pipe 5 is provided with a water inlet flowmeter 6, the water outlet pipe is provided with a plurality of water outlet pipes, and the plurality of water outlet pipes are connected to the same water outlet main pipe 4, and the water outlet main pipe is provided with a water outlet flowmeter 7,

[0018] The intermediate frequency furnace is also equipped with an infrared thermal imager 3. At least two infrared thermal imagers 3 are provided. Each infrared thermal imager 3 is evenly distributed along the circumference of the intermediate frequency furnace, and the camera of the infrared thermal imager 3 faces the outside of the intermediate frequency furnace.

[0019] The water inlet flowmeter 6, water inlet temperature sensor 9, water outlet flowmeter 7, water outlet temperature sensor 8 and infrared thermal imager 3 are all electrically connected to the control center. The connection and control here are all existing technologies and will not be repeated here. The control center adopts a PLC controller, and the control center is connected to an alarm to realize abnormal temperature alarm prompts. At the same time, the control center supports temperature alarm recording and query; supports historical temperature trend query analysis. When the excitation coil is abnormal, causing the equipment temperature to rise, the circulating water temperature in the circulating water pipe will change. The temperature change can be detected by the water inlet temperature sensor and the water outlet temperature sensor. When the circulating water leaks, it will affect the heat dissipation effect. Therefore, the added water inlet flowmeter and water outlet flowmeter are used to observe whether the circulating water is leaking. The temperature changes of key components of the medium frequency furnace can be monitored by the infrared thermal imager, and an alarm will be issued when it is abnormal.

[0020] By using the infrared thermal imaging temperature measurement of the infrared thermal imager 3, the temperature of the medium frequency furnace is monitored in real time, and an abnormal temperature alarm is provided. Multiple infrared thermal imagers 3 can be flexibly arranged as needed to realize point, line, frame and other regular temperature measurement methods, which are flexible, convenient and fast to use. By adding an inlet flowmeter 6 and an inlet temperature sensor 9 to the water inlet pipe of the water cooling system connected to the medium frequency furnace, and installing an outlet flowmeter 7 and an outlet temperature sensor 8 on its outlet pipe, the temperature and flow status of the medium frequency furnace circulating water system can be detected online. The temperature changes of the medium frequency furnace components can be monitored in real time, and the circulating water temperature and flow changes can also be detected, so as to promptly detect circulating water leaks and abnormal temperature conditions. It is convenient for workers to handle emergencies, improves safety and reduces losses.

[0021] Example 2

[0022] like Figure 2 As shown, the utility model provides a medium frequency furnace operation safety monitoring device, including a medium frequency furnace and a control center, a crucible 1 is arranged in the medium frequency furnace, an excitation coil 2 is arranged outside the medium frequency furnace, the medium frequency furnace is connected to a water cooling system, the water cooling system includes a circulating water pipe arranged on the medium frequency furnace, a water inlet temperature sensor 9 is arranged on the water inlet pipe of the circulating water pipe, and a water outlet temperature sensor 8 is arranged on the water outlet pipe of the circulating water pipe; the water inlet pipe is provided with a plurality of water inlet pipes, and the plurality of water inlet pipes are connected to the same water inlet main pipe, the water inlet main pipe 5 is provided with a water inlet flowmeter 6, the water outlet pipe is provided with a plurality of water outlet pipes, and the plurality of water outlet pipes are connected to the same water outlet main pipe 4, and the water outlet main pipe is provided with a water outlet flowmeter 7,

[0023] The intermediate frequency furnace is also equipped with an infrared thermal imager 3. At least two infrared thermal imagers 3 are provided. Each infrared thermal imager 3 is evenly distributed along the circumference of the intermediate frequency furnace, and the camera of the infrared thermal imager 3 faces the outside of the intermediate frequency furnace.

[0024] The water inlet flowmeter 6, water inlet temperature sensor 9, water outlet flowmeter 7, water outlet temperature sensor 8 and infrared thermal imager 3 are all electrically connected to the control center. The connection and control here are all existing technologies and will not be repeated here. The control center adopts a PLC controller, and the control center is connected to an alarm to realize abnormal temperature alarm prompts. At the same time, the control center supports temperature alarm recording and query; supports historical temperature trend query analysis. When the excitation coil is abnormal, causing the equipment temperature to rise, the circulating water temperature in the circulating water pipe will change. The temperature change can be detected by the water inlet temperature sensor and the water outlet temperature sensor. When the circulating water leaks, it will affect the heat dissipation effect. Therefore, the added water inlet flowmeter and water outlet flowmeter are used to observe whether the circulating water is leaking. The temperature changes of key components of the medium frequency furnace can be monitored by the infrared thermal imager, and an alarm will be issued when it is abnormal.

[0025] The infrared thermal imager 3 is arranged on a bracket, and the bracket includes a vertical guide rod 12 and a vertical screw rod 11. The lower end of the screw rod 11 is connected to a forward and reverse motor 10. The screw rod 11 is threadedly matched with a movable plate 13. The movable plate 13 is provided with a guide hole, and the guide rod 12 passes through the guide hole. The upper surface of the movable plate 13 is provided with a mounting plate 15. The lower surface of the mounting plate 15 is fixedly connected with a forward and reverse motor 14. The forward and reverse motor 14 is fixed on the movable plate 13, and the infrared thermal imager 3 is mounted on the mounting plate 15. The arrangement here can drive the movable plate 13 to move up and down through the forward and reverse rotation of the forward and reverse motor 10, so that the infrared thermal imager 3 can be moved up and down, so as to monitor different parts of the intermediate frequency furnace. At the same time, the forward and reverse rotation of the forward and reverse motor 14 can rotate the mounting plate 15, so as to change the monitoring range of the infrared thermal imager 3 and improve the detection range.

[0026] A vertical connecting shaft is fixed on the mounting plate 15, the bottom of the infrared thermal imager 3 is hingedly connected to the top of the connecting shaft, an electric push rod 16 is hingedly connected to the end of the infrared thermal imager 3 away from the camera, and the other end of the electric push rod 16 is hingedly connected to the mounting plate 15. The arrangement here allows the camera of the infrared thermal imager 3 to be fine-tuned up and down by extending and retracting the electric push rod 16, which is conducive to adjusting the detection range and improving the detection effect.

[0027] By using the infrared thermal imaging temperature measurement of the infrared thermal imager 3, the temperature of the medium frequency furnace is monitored in real time, and an abnormal temperature alarm is provided. Multiple infrared thermal imagers 3 can be flexibly arranged as needed to realize point, line, frame and other regular temperature measurement methods, which are flexible, convenient and fast to use. By adding an inlet flow meter 6 and an inlet temperature sensor 9 to the water inlet pipe of the water cooling system connected to the medium frequency furnace, and installing an outlet flow meter 7 and an outlet temperature sensor 8 on its outlet pipe, the temperature and flow status of the medium frequency furnace circulating water system can be detected online. The temperature changes of the medium frequency furnace components can be monitored in real time, and the circulating water temperature and flow changes can also be detected, so as to promptly detect circulating water leaks and abnormal temperature conditions. It is convenient for workers to handle emergencies, improves safety and reduces losses.

[0028] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A medium frequency furnace operation safety monitoring device, comprising a medium frequency furnace and a control center, wherein the medium frequency furnace is connected to a water cooling system, wherein the water cooling system comprises a circulating water pipe arranged on the medium frequency furnace, and wherein: The water inlet pipe of the circulating water pipe is provided with a water inlet flow meter and a water inlet temperature sensor, and the water outlet pipe of the circulating water pipe is provided with a water outlet flow meter and a water outlet temperature sensor; The intermediate frequency furnace is also equipped with an infrared thermal imager, at least two of which are arranged evenly distributed along the circumference of the intermediate frequency furnace; The water inlet flow meter, water inlet temperature sensor, water outlet flow meter, water outlet temperature sensor and infrared thermal imager are all electrically connected to the control center.

2. The medium frequency furnace operation safety monitoring device according to claim 1 is characterized in that: The infrared thermal imager is arranged on a bracket, and the bracket includes a vertical guide rod and a vertical screw rod. The lower end of the screw rod is connected to a forward and reverse motor 1. The screw rod is threadedly matched with a movable plate. The movable plate is provided with a guide hole. The guide rod passes through the guide hole. The upper surface of the movable plate is provided with a mounting plate. The lower surface of the mounting plate is fixedly connected to a forward and reverse motor 2. The forward and reverse motor 2 is fixed on the movable plate, and the infrared thermal imager is mounted on the mounting plate.

3. The medium frequency furnace operation safety monitoring device according to claim 2 is characterized in that: A vertical connecting shaft is fixed on the mounting plate, the bottom of the infrared thermal imager is hinged to the top of the connecting shaft, an end of the infrared thermal imager away from the camera head is hinged to an electric push rod, and the other end of the electric push rod is hinged to the mounting plate.

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