Mechanical arm for measuring temperature of electric arc furnace

Abstract

The mechanical arm for measuring the temperature of the electric arc furnace comprises a mechanical arm body, a temperature measuring device and a furnace door closing device, the temperature measuring device and the furnace door closing device are arranged on the mechanical arm body in a matched mode, a temperature measuring element and a sliding frame device are arranged on the temperature measuring device, the temperature measuring element is arranged on the sliding frame device in a sliding mode, and the temperature measuring element and a furnace door opening of the furnace door closing device can penetrate through the temperature measuring element. The sliding frame device comprises a machine frame, a sliding guide rail, a sliding seat, a driving motor and a driving chain, the sliding guide rail is arranged on the machine frame, the sliding seat is arranged on the sliding guide rail in a sliding mode, a temperature measuring element is fixedly arranged on the sliding seat, the sliding seat is fixedly connected with the driving chain, the driving chain is arranged on the driving motor, and the driving motor is fixedly arranged on the machine frame. The electric arc furnace temperature measuring device has the advantages that the temperature measuring element is controlled by the mechanical wall to extend into the electric arc furnace to carry out hardcover temperature measurement, the safety problem caused by manual temperature measurement in the prior art is solved, and the problem that temperature measurement is inaccurate when the temperature of molten steel in a molten pool is obtained through a non-contact temperature measurement method is solved.

Description

Technical Field

[0001] This utility model relates to the field of electric arc furnace steelmaking technology, and more specifically to a robotic arm for temperature measurement in electric arc furnaces. Background Technology

[0002] The electric arc furnace steelmaking process involves the interaction of various energies and the transfer of heat, transforming the metal charge, mainly composed of scrap steel, into high-temperature liquid steel with qualified temperature and chemical composition.

[0003] During the smelting process, various forms of energy, including electrical energy input from the motor, physical heat of the molten iron, and chemical heat from element oxidation, interact within the molten pool, promoting the melting phase transformation and compositional changes of solid furnace materials such as scrap steel. After most of the energy is absorbed by the molten pool, its temperature rises. As smelting progresses, the molten pool temperature fluctuates continuously. The molten pool temperature directly affects the oxygen supply, power supply, auxiliary material feeding, and injection operations in the electric arc furnace smelting process, ultimately determining the quality of the molten steel product with the required temperature and chemical composition.

[0004] Conventional molten pool temperature measurement methods involve on-site operators using industrial smelting temperature guns to measure the temperature at the furnace entrance. The temperature at the point where the temperature gun is inserted is taken as the temperature of the entire molten pool, thus determining the temperature of the molten steel. This method relies on manual temperature measurement, involving close contact with high temperatures, posing significant safety risks and susceptibility to thermal damage. Furthermore, the measured temperature only represents the temperature of a localized area within the molten pool, failing to account for the uneven temperature distribution and thus not representing the overall temperature of the molten steel pool, resulting in significant errors.

[0005] To address this issue and avoid the safety concerns associated with manual temperature measurement, non-contact temperature measurement methods are commonly used to obtain the temperature of the molten steel in the molten pool. This method can simultaneously acquire the temperature of multiple measuring points on the high-temperature surface of the molten pool, providing real-time feedback on the molten pool's temperature. However, during electric arc furnace smelting, the upper part of the molten steel surface is covered by slag. Ordinary infrared temperature measuring devices can only acquire the temperature of the slag, while the temperature signal of the molten steel below is blocked. Therefore, the temperature signal obtained using this method still differs somewhat from the actual molten steel temperature, making it difficult to accurately obtain the molten steel temperature in real time, and thus unable to provide feedback for control and guidance of actual operations such as oxygen and power supply. Utility Model Content

[0006] This invention overcomes the shortcomings of the prior art and provides a robotic arm for temperature measurement in electric arc furnaces.

[0007] The objective of this utility model is achieved through the following technical solution.

[0008] Mechanical arm for temperature measurement of electric arc furnace, including mechanical arm, temperature measurement device and furnace door closing device, mechanical arm is provided with temperature measurement device and furnace door closing device in cooperation, temperature measurement device is equipped with temperature measurement element and slide device, temperature measurement element is equipped on slide device, temperature measurement element can pass through the furnace door mouth of furnace door closing device.

[0009] Slide device includes frame, sliding guide, sliding seat, drive motor and drive chain, frame is equipped with sliding guide, sliding seat is equipped on sliding guide, sliding seat is fixedly equipped with temperature measurement element, sliding seat is fixedly connected with drive chain, drive chain is arranged on drive motor, drive motor is fixedly arranged on frame.

[0010] Mechanical arm includes base, rotary support base, stand, rotating motor and telescopic device, base is rotatably provided with rotary support base, rotary support base is provided with rotating motor in cooperation, rotary support base is fixedly provided with stand, stand is rotatably connected with one fixed point of frame, and the other fixed point of frame is connected with stand through telescopic device.

[0011] Telescopic device is drive oil cylinder telescopic device.

[0012] Base is equipped with winch device of furnace door closing device, winch device is connected with furnace door closing plate through guide lock, and furnace door closing plate is provided with furnace door temperature measurement port in cooperation.

[0013] The beneficial effects of the present application are as follows:

[0014] The present application solves the safety problem of manual temperature measurement in the prior art, and solves the problem of inaccurate temperature measurement when obtaining the temperature of molten steel in the molten pool by non-contact temperature measurement method. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the use schematic diagram of the present application;

[0016] Figure 2 It is the structure schematic diagram of the present application;

[0017] Figure 3 It is the structure schematic diagram of temperature measurement device;

[0018] Figure 4 It is the structure schematic diagram of mechanical arm;

[0019] In the figure: 1, mechanical arm; 101, base; 102, rotary support base; 103, column; 104, rotating motor; 105, telescopic device; 2, temperature measuring device; 201, temperature measuring element; 202, rack; 203, sliding guide rail; 204, sliding seat; 204, driving motor; 205, driving chain; 3, furnace door closing device; 301, hoist device; 302, furnace door closing plate; 4, electric arc furnace. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model will be further explained below through specific examples.

[0021] Embodiment

[0022] The mechanical arm for temperature measurement of the electric arc furnace comprises a mechanical arm 1, a temperature measuring device 2 and a furnace door closing device 3, the temperature measuring device 2 and the furnace door closing device 3 are arranged on the mechanical arm 1 in cooperation, the temperature measuring device 2 is provided with a temperature measuring element 201 and a sliding rack device, the temperature measuring element 201 is slidably arranged on the sliding rack device, and the temperature measuring element 201 is arranged through the furnace door opening of the furnace door closing device 3.

[0023] The sliding rack device comprises a rack 202, a sliding guide rail 203, a sliding seat 204, a driving motor 205 and a driving chain 205, the sliding guide rail 203 is arranged on the rack 202, the sliding seat 204 is slidably arranged on the sliding guide rail 203, the temperature measuring element 201 is fixedly arranged on the sliding seat 204, the sliding seat 204 is fixedly connected with the driving chain 205, the driving chain 205 is arranged on the driving motor 205, and the driving motor 205 is fixedly arranged on the rack 202.

[0024] The mechanical arm 1 comprises a base 101, a rotary support base 102, a column 103, a rotating motor 104 and a telescopic device 105, the rotary support base 102 is rotatably arranged on the base 101, the rotary support base 102 is arranged in cooperation with the rotating motor 104, the column 103 is fixedly arranged on the rotary support base 102, one fixed point of the rack 202 is rotatably connected with the column 103, and the other fixed point of the rack 202 is connected with the column 103 through the telescopic device 105.

[0025] The telescopic device 105 is a driving oil cylinder telescopic device.

[0026] The base 101 is provided with a hoist device 301 of the furnace door closing device 3, the hoist device 301 is connected with a furnace door closing plate 302 through a lock, and the furnace door closing plate 302 is arranged in cooperation with a furnace door temperature measuring opening.

[0027] As Figures 1-3As shown, the working principle of the utility model is as follows, the device is used in cooperation with the electric arc furnace 4, a temperature measuring port is opened on the furnace wall of the electric arc furnace 4 during setting, the temperature measuring port is controlled by the furnace door closing device 3, the opening and closing state of the temperature measuring port is controlled by the winch device 301 controlling the furnace door closing plate 302.In use, after the furnace door closing plate 302 is lifted by the winch device 301, the slide device is adjusted to a suitable position by the mechanical arm 1, the sliding seat 204 is made to slide along the sliding guide rail 203 by the driving chain 205 driven by the driving motor 205, the temperature measuring element 201 is sent into the electric arc furnace 4 through the furnace door temperature measuring port to measure temperature, after the temperature measurement is finished, the temperature measuring element 201 is sent out by the sliding seat 204, the temperature measuring port is closed by the closing of the furnace door closing plate 302, and the temperature measurement is completed.

[0028] Further, as shown, Figure 4 The mechanical arm 1 is fixed by the base 101, the rotary support base 102 is driven by the rotating motor 104, horizontal rotation is realized, in the embodiment, the two are driven by gear meshing. The stand column 103 is rotatably connected with one fixed point of the rack 202, and the other end is connected with the rack 202 through the telescopic device 105, the angle of the rack 202 in the vertical direction is adjusted by the telescopic adjustment of the telescopic device 105.

[0029] The above embodiment of the utility model is described in detail, but the content is only the preferred embodiment of the utility model, and cannot be considered to limit the implementation range of the utility model. Any equivalent change and improvement within the scope of the utility model application should still belong to the patent coverage range of the utility model.

Claims

1. A mechanical arm for temperature measurement of an electric arc furnace, characterized in that: The mechanical arm, the temperature measuring device and the furnace door closing device are cooperatively arranged on the mechanical arm, the temperature measuring device is provided with a temperature measuring element and a sliding device, the temperature measuring element is slidably arranged on the sliding device, and the temperature measuring element is arranged through the furnace door of the furnace door closing device.

2. The mechanical arm for temperature measurement of an electric arc furnace according to claim 1, characterized in that: The sliding device comprises a frame, a sliding guide rail, a sliding seat, a driving motor and a driving chain, the frame is provided with the sliding guide rail, the sliding seat is slidably arranged on the sliding guide rail, the temperature measuring element is fixedly arranged on the sliding seat, the sliding seat is fixedly connected with the driving chain, the driving chain is arranged on the driving motor, and the driving motor is fixedly arranged on the frame.

3. The mechanical arm for temperature measurement of an electric arc furnace according to claim 2, characterized in that: The mechanical arm comprises a base, a rotary support base, a stand, a rotating motor and an extension device, the rotary support base is rotatably arranged on the base, the rotary support base is cooperatively arranged with the rotating motor, the stand is fixedly arranged on the rotary support base, one fixed point of the frame is rotatably connected with the stand, and the other fixed point of the frame is connected with the stand through the extension device.

4. The mechanical arm for temperature measurement of an electric arc furnace according to claim 3, characterized in that: The extension device is a driving oil cylinder extension device.

5. The mechanical arm for temperature measurement of an electric arc furnace according to claim 3, characterized in that: The base is provided with a winch device of the furnace door closing device, the winch device is connected with a furnace door closing plate through a guide lock, and the furnace door closing plate is cooperatively arranged with a furnace door temperature measuring port.

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