Infrared thermal imaging monitoring system for intermediate frequency furnace

Abstract

The utility model discloses infrared thermal imaging monitoring system of intermediate frequency stove, include: first flowmeter is arranged respectively on the total water inlet pipe and total backwater pipe of each intermediate frequency stove of intermediate frequency stove cooling circulating water system, electric valve is arranged respectively on the total water inlet pipe and total backwater pipe of each intermediate frequency stove of intermediate frequency stove cooling circulating water system, PT100 pastes wall temperature measuring element and is arranged respectively on six backwater branch pipes of each intermediate frequency stove of intermediate frequency stove cooling circulating water system, pressure transmitter is arranged respectively on the total water inlet pipe of each intermediate frequency stove of intermediate frequency stove cooling circulating water system, second flowmeter is arranged on the inner circulating water inlet and backwater pipeline of intermediate frequency stove cooling circulating water system, two infrared thermal imaging camera heads are arranged respectively on both sides of each intermediate frequency stove of intermediate frequency stove cooling circulating water system, optical fiber temperature measurement probe is arranged respectively on the electric capacity of capacitor cabinet, control cabinet reactor and choke inductance backwater pipeline.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling circulating water systems for medium-frequency furnaces, and in particular to an infrared thermal imaging monitoring system for medium-frequency furnaces. Background Technology

[0002] The cooling water circulation system plays a very important role in the production process of medium-frequency furnaces. With the increasing awareness of safety supervision, it is very important to monitor and control the cooling water flow and furnace temperature. Monitoring these parameters can promptly issue alarm signals in case of abnormalities, notifying operators to handle the situation in a timely manner.

[0003] However, the current method of manually inspecting the temperature of the furnace body and circulating water using handheld commercial temperature guns is labor-intensive and inefficient for employees, and manual inspection during the operation of the medium-frequency furnace poses safety risks.

[0004] Therefore, an infrared thermal imaging monitoring system for medium-frequency furnaces is proposed. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an infrared thermal imaging monitoring system for medium-frequency furnaces that provides comprehensive monitoring data at low cost and can monitor the furnace body temperature, circulating water flow rate, circulating water temperature, and pressure in real time. It is mainly used for medium-frequency furnaces in assembly workshops.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] The infrared thermal imaging monitoring system for medium-frequency furnaces includes:

[0008] The first flow meter is installed on the main inlet pipe and the main return pipe of each medium-frequency furnace in the medium-frequency furnace cooling circulating water system;

[0009] Electric valves are installed on the main inlet and main return water pipes of each medium-frequency furnace in the medium-frequency furnace cooling circulating water system.

[0010] The PT100 wall-mounted temperature sensing element is installed on the six return water branch pipes of each medium-frequency furnace in the medium-frequency furnace cooling circulating water system;

[0011] Pressure transmitters are installed on the main inlet pipe of each medium-frequency furnace in the medium-frequency furnace cooling circulating water system;

[0012] The second flow meter is installed on the inlet and outlet water pipes of the internal circulating water system of the medium frequency furnace cooling circulating water system.

[0013] Two infrared thermal imaging cameras are respectively installed on both sides of each medium-frequency furnace in the medium-frequency furnace cooling circulating water system;

[0014] Fiber optic temperature probes are installed on the capacitors of the capacitor bank, the reactors of the control cabinet, and the return water pipes of the choke inductors.

[0015] The first flow meter, electric valve, PT100 wall-mounted temperature sensing element, pressure transmitter, and second flow meter are respectively connected to the PLC cabinet in the main control room; the fiber optic temperature probe is connected to the PLC cabinet through the fiber optic temperature sensing host; and the infrared thermal imaging camera is connected to the network cabinet in the main control room in sequence.

[0016] The PLC cabinet includes a 485 communication module, a PLC system module, an operator station, and a display connected in sequence. The 485 communication module is connected to the fiber optic temperature measurement host, and the PLC system module is connected to the first flow meter, the electric valve, the PT100 wall-mounted temperature measuring element, the pressure transmitter, and the second flow meter.

[0017] The network cabinet includes an Ethernet switch, which is connected to the infrared system camera server and the infrared camera display screen, respectively. The Ethernet switch is also connected to the infrared thermal imaging camera.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model can monitor the circulating water flow rate, pressure, and temperature in real time, and monitor the furnace body temperature of the medium frequency furnace in real time.

[0020] 2. This utility model reduces the workload of manual inspection of medium-frequency furnaces, eliminates the uncertainty of manual inspection, reduces safety risks, and improves the operational reliability of circulating water in medium-frequency furnaces.

[0021] 3. This utility model uses an infrared thermal imaging system to predict the operation of the medium frequency furnace in a timely manner. When the local temperature rises, the fault point can be detected in time and the furnace can be stopped in time. After the molten iron is poured out, the fault can be dealt with to avoid the furnace leakage safety accident.

[0022] 4. This utility model can predict the blockage of circulating water pipelines by measuring pipeline temperature. When a minor blockage occurs, the pipeline can be cleared in time to prevent the fault from escalating. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a schematic diagram of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0026] like Figure 1 As shown, the infrared thermal imaging monitoring system for a medium-frequency furnace includes: a first flow meter 1, installed on the main inlet and main return water pipes of each medium-frequency furnace in the cooling circulating water system; an electric valve 2, installed on the main inlet and main return water pipes of each medium-frequency furnace in the cooling circulating water system; a PT100 wall-mounted temperature sensing element 3, installed on six return water branch pipes of each medium-frequency furnace in the cooling circulating water system; a pressure transmitter 4, installed on the main inlet water pipe of each medium-frequency furnace in the cooling circulating water system; and a second flow meter 5, installed within the cooling circulating water system. On the circulating water inlet and outlet pipes; two infrared thermal imaging cameras 6 are respectively installed on both sides of each medium-frequency furnace in the medium-frequency furnace cooling circulating water system; fiber optic temperature probes 7 are respectively installed on the capacitors of capacitor cabinet 20, control cabinet reactor 18 and choke inductor return water pipes; among them, the first flow meter 1, electric valve 2, PT100 wall-mounted temperature measuring element 3, pressure transmitter 4 and second flow meter 5 are respectively connected to the PLC cabinet 10 of the main control room 8; the fiber optic temperature probes 7 are connected to the PLC cabinet 10 through the fiber optic temperature measuring host 19; the infrared thermal imaging cameras 6 are sequentially connected to the network cabinet 9 of the main control room 8.

[0027] like Figure 1 As shown, the PLC cabinet 10 includes a 485 communication module 17, a PLC system module 16, an operator station 15, and a display 14 connected in sequence. The 485 communication module 17 is connected to the fiber optic temperature measurement host 19, and the PLC system module 16 is connected to the first flow meter 1, the electric valve 2, the PT100 wall-mounted temperature measuring element 3, the pressure transmitter 4, and the second flow meter 5.

[0028] like Figure 1 As shown, the network cabinet 9 includes an Ethernet switch 12, which is connected to the infrared system camera server 11 and the infrared camera display screen 13 respectively. The Ethernet switch 12 is also connected to the infrared thermal imaging camera 6.

[0029] In use, each medium-frequency furnace has a main inlet water pipe and a main return water pipe. A first flow meter 1 and an electric valve 2 are installed on these two pipes. The electric valve (2) can be remotely or locally switched on and off via the operating station 15. The first flow meter 1 transmits the measured data to the PLC system module 16, which uses the flow difference to determine if there is a leak in the circulating water pipeline. Each medium-frequency furnace has six return water branch pipes. PT100 wall-mounted temperature sensing elements 3 are installed on these six branch pipes to measure the return water temperature. The data is transmitted to the PLC system module 16. Information is transmitted to PLC system module 16. When the branch pipe temperature exceeds the set value, PLC system module 16 alarms, prompting operators to unclog the circulating water branch pipes to prevent pipe bursts and leaks, ensuring the safe operation of the intermediate frequency furnace. A pressure transmitter 4 is installed on the main water inlet pipe of each intermediate frequency furnace to measure the inlet water pressure and transmit the data to PLC system module 16. When the water pressure is lower than the set value of PLC system module 16, PLC system module 16 alarms. Because PLC system module 16 is connected to the start / stop section of the intermediate frequency furnace power supply... Therefore, at this time, the PLC system module 16 can cut off the power supply to the medium-frequency furnace. A second flow meter 5 is installed on the inlet and outlet water pipes of the internal circulating water system. The second flow meter 5 transmits the measured data to the PLC system module 16. When the difference between the inlet and outlet water flow rates exceeds the set value, the PLC system module 16 alarms and displays a leak warning on the display 14. Two infrared thermal imaging cameras 6 are installed on both sides of each medium-frequency furnace body. A local temperature alarm value can be set on the infrared camera display screen 13. When the temperature exceeds the set value, an audible and visual alarm is triggered. The alarm sounds and simultaneously broadcasts fault information via voice. The operating status of the furnace lining and the magnetic yoke can be determined by the local temperature. Fiber optic temperature probes 7 are installed on the capacitors of the capacitor cabinet 20, the control cabinet reactor 18, and the choke inductor return water pipe to monitor the return water temperature. The detection data is transmitted to the 485 communication module 17 via the fiber optic temperature measurement host 19, and then transmitted to the PLC system module 16 via the 485 communication module 17. When the temperature of each indicator exceeds the set value, the PLC system module 16 alarms to indicate that the pipeline is blocked and needs to be cleared.

[0030] This utility model is equipped with a UPS uninterruptible power supply, and the power input circuit breaker is a dual power automatic transfer switch. It can detect various parameters of the medium frequency furnace in the event of power failure to ensure the safe operation of the medium frequency furnace. The monitoring screen program is written on the host computer of the operation station 15. The program screen displays the circulating water flow rate, circulating water pressure, and temperature of each temperature measuring point. The upper limit of alarm temperature and flow difference can be set on the screen. The temperature of each temperature measuring point is recorded and queried to form a curve. The pipeline blockage can be predicted by the curve changes. The water flow of each flow measuring point is recorded and queried to form a curve. The pipeline blockage and the flow change of the circulating water system can be judged. The infrared camera display screen 13 and the display screen 14 display the furnace wall thermal image, the water temperature status of the circulating water return branch pipe, the circulating water temperature of the main pipe, the capacitor temperature, the reactance temperature, and the choke inductor temperature in real time. The staff can observe the data of each point at any time.

[0031] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An infrared thermal imaging monitoring system for a medium-frequency furnace, characterized in that, include: The first flow meter (1) is installed on the main inlet pipe and the main return pipe of each medium frequency furnace in the medium frequency furnace cooling circulating water system; Electric valves (2) are respectively installed on the main inlet pipe and the main return pipe of each medium-frequency furnace in the medium-frequency furnace cooling circulating water system; PT100 wall-mounted temperature measuring elements (3) are respectively installed on the six return water branch pipes of each medium frequency furnace in the medium frequency furnace cooling circulating water system; Pressure transmitters (4) are installed on the main water inlet pipe of each medium-frequency furnace in the medium-frequency furnace cooling circulating water system; The second flow meter (5) is installed on the inlet and outlet water pipes of the internal circulating water system of the medium frequency furnace cooling circulating water system; Two infrared thermal imaging cameras (6) are respectively installed on both sides of each medium frequency furnace in the medium frequency furnace cooling circulating water system; Fiber optic temperature probes (7) are respectively installed on the capacitors of the capacitor cabinet (20), the reactor (18) of the control cabinet, and the return water pipe of the choke inductor; Among them, the first flow meter (1), electric valve (2), PT100 wall-mounted temperature measuring element (3), pressure transmitter (4) and second flow meter (5) are respectively connected to the PLC cabinet (10) of the main control room (8); the fiber optic temperature measuring probe (7) is connected to the PLC cabinet (10) through the fiber optic temperature measuring host (19); the infrared thermal imaging camera (6) is connected to the network cabinet (9) of the main control room (8) in sequence.

2. The infrared thermal imaging monitoring system for a medium-frequency furnace according to claim 1, characterized in that, The PLC cabinet (10) includes a 485 communication module (17), a PLC system module (16), an operator station (15), and a display (14) connected in sequence. The 485 communication module (17) is connected to the fiber optic temperature measurement host (19), and the PLC system module (16) is connected to the first flow meter (1), the electric valve (2), the PT100 wall-mounted temperature measuring element (3), the pressure transmitter (4), and the second flow meter (5).

3. The infrared thermal imaging monitoring system for a medium-frequency furnace according to claim 1, characterized in that, The network cabinet (9) includes an Ethernet switch (12), which is connected to the infrared system camera server (11) and the infrared camera display screen (13) respectively. The Ethernet switch (12) is connected to the infrared thermal imaging camera (6).

Images