Hydrogen annealing furnace device suitable for oriented silicon steel

Abstract

The utility model discloses a hydrogen annealing furnace device suitable for oriented silicon steel, and belongs to the technical field of transformer iron core manufacturing. The device comprises a furnace body, a hydrogen treatment system arranged on one side of the furnace body, a water cooling system and a hydrogen concentration detection sensor, one end of a gas leading-out pipe of the hydrogen treatment system is connected to a furnace opening, and the other end of the gas leading-out pipe of the hydrogen treatment system is communicated with an automatic ignition system; a rubber pipe of the hydrogen treatment system is communicated with the water cooling system; the water cooling system is connected with the furnace body through the water cooling round wall, and the hydrogen concentration detection sensor is further electrically connected with the automatic ignition system. According to the device, the concentration of unreacted hydrogen is detected, and hydrogen tail gas can be automatically treated, so that potential safety hazards are reduced; and meanwhile, the temperature of the furnace mouth can be controlled by utilizing a product obtained after hydrogen treatment, so that the problems of insufficient and non-uniform recrystallization of the oriented silicon steel plate at the furnace mouth after annealing is finished are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer core manufacturing, and more specifically relates to a hydrogen annealing furnace device suitable for oriented silicon steel. Background Art

[0002] Oriented silicon steel is an important soft magnetic material with various shapes. During the processing of oriented silicon steel, an annealing furnace is needed for annealing. The hydrogen annealing furnace is a new type of heat exchange equipment. This equipment can slowly heat the oriented silicon steel to a certain temperature, keep it warm for a period of time, and then cool it at an appropriate speed. In the process of annealing oriented silicon steel with a hydrogen annealing furnace, for safety reasons, it is necessary to ensure that the unreacted hydrogen inside the furnace body gathers at the furnace mouth and then escapes or is processed. At the same time, the furnace mouth temperature needs to be further controlled to maximize the annealing effect of oriented silicon steel.

[0003] However, the existing hydrogen annealing furnace cannot detect the content of escaped hydrogen gas during use, nor can it automatically process unreacted hydrogen, and it cannot control the furnace mouth temperature, making it difficult to make the oriented silicon steel sheet recrystallize fully and uniformly. Therefore, a new type of hydrogen annealing furnace dedicated to oriented silicon steel is urgently needed to solve the above problems. Utility Model Content

[0004] 1. Problem to be solved

[0005] The utility model aims to overcome the shortcomings of the prior art annealing furnace, such as the difficulty in automatically treating the unreacted hydrogen, the high temperature of the oriented silicon steel sheet at the furnace mouth, and the difficulty in cooling down. The utility model provides a hydrogen annealing furnace device suitable for oriented silicon steel, which not only realizes the detection of the concentration of unreacted hydrogen, but also can automatically treat the hydrogen tail gas to reduce safety hazards; at the same time, the product after the hydrogen treatment can also be used to control the furnace mouth temperature to reduce the problem of insufficient and uneven recrystallization of the oriented silicon steel sheet at the furnace mouth after the annealing is completed.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0008] The utility model discloses a hydrogen annealing furnace device suitable for oriented silicon steel, comprising a furnace body, a hydrogen treatment system, a water cooling system and a hydrogen concentration detection sensor, wherein:

[0009] The hydrogen processing system is arranged on one side of the furnace body, and the hydrogen processing system includes a gas outlet pipe, a light glass cover and a rubber pipe. One end of the gas outlet pipe is connected to the furnace mouth, and the other end thereof is connected to the automatic ignition system; the light glass cover is arranged at the pipe mouth of the gas outlet pipe and installed on the furnace body, and the water outlet of the light glass cover is connected to the water cooling system through a rubber pipe;

[0010] The water cooling system is connected to the furnace body through a water cooling circular wall, and is used to cool the oriented silicon steel plate at the furnace mouth; the hydrogen concentration detection sensor is arranged near the furnace mouth of the furnace body, and is used to detect the hydrogen concentration at the furnace mouth after the reaction is completed; the hydrogen concentration detection sensor is also electrically connected to the automatic ignition system, and when the detected hydrogen concentration value is higher than the set value, the automatic ignition system is automatically started to ignite and burn the hydrogen.

[0011] Furthermore, the automatic ignition system includes positive and negative wires and an ignition switch, one end of the positive and negative wires is connected to the power supply through the ignition switch, and the other end thereof extends into the outlet of the gas outlet pipe.

[0012] Furthermore, the hydrogen concentration detection sensor includes a fiber optic hydrogen sensor, a hydrogen concentration display and a signal line. The fiber optic hydrogen sensor is arranged at the gas outlet pipe to detect the hydrogen concentration at the furnace mouth. The fiber optic hydrogen sensor is connected to the hydrogen concentration display.

[0013] Furthermore, it also includes a hydrogen alarm joint control system, which is electrically connected to the hydrogen concentration detection sensor on the one hand and to the window opening control mechanism on the other hand, and is used to control the window size according to the hydrogen content.

[0014] Furthermore, the window opening control mechanism includes a receiver, a mover and a clamp. The receiver is electrically connected to the hydrogen alarm joint control system on the one hand, and is electrically connected to the mover on the other hand. One end of the mover is fixedly connected to the window through the clamp, and the other end can be movably mounted on the wall.

[0015] Furthermore, there are two movers, which are symmetrically arranged on the upper and lower sides of the window, and each mover is fixedly connected to the window via a clamping plate.

[0016] Furthermore, it also includes a control panel, which is arranged outside the furnace body, and the circuits of the automatic ignition system and the hydrogen alarm joint control system are integrated in the control panel.

[0017] Furthermore, it also includes an air cooling system, which is arranged at the furnace mouth of the furnace body and is used to cool the furnace mouth with air.

[0018] Furthermore, an evaporation tank is provided on the other side of the furnace body.

[0019] Furthermore, a vacuum pressure gauge and a dew point meter are provided on the other side of the furnace.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] (1) The utility model is a hydrogen annealing furnace device suitable for oriented silicon steel. By arranging a hydrogen treatment system, a water cooling system and a hydrogen concentration detection sensor on one side of the furnace body, the unreacted hydrogen content at the furnace mouth can be detected in real time, and the hydrogen treatment system can be automatically controlled to start according to the hydrogen content to burn the unreacted hydrogen. At the same time, more optimally, the water cooling system can be used to cool the oriented silicon steel at the furnace mouth, and the condensed water generated after the hydrogen combustion flows back into the water cooling system to cool the oriented silicon steel, so as to reduce the problem of insufficient and uneven recrystallization of the oriented silicon steel sheet at the furnace mouth due to high temperature after the annealing is completed.

[0023] (2) The utility model is a hydrogen annealing furnace device suitable for oriented silicon steel. By setting a hydrogen concentration detection sensor, the concentration of hydrogen can be detected in real time to avoid experimental accidents such as explosions caused by excessive hydrogen concentration. In addition, a hydrogen alarm joint control system is set up. When it is detected that the hydrogen concentration is too high, an alarm will be automatically issued. At the same time, the hydrogen alarm joint control system is also electrically connected to the window opening control mechanism, which can automatically control the size of the window opening.

[0024] (3) The utility model is a hydrogen annealing furnace device suitable for oriented silicon steel, and an air cooling system is also added. The air cooling system is arranged near the furnace mouth, and is used to physically cool the oriented silicon steel at the furnace mouth, so as to prevent the oriented silicon steel sheet from being overheated and affecting its full and uniform recrystallization. At the same time, the water cooling system is combined to further achieve the cooling effect on the oriented silicon steel, which significantly reduces the phenomenon of insufficient and uneven recrystallization of the oriented silicon steel.

[0025] (4) The utility model is a hydrogen annealing furnace device suitable for oriented silicon steel. The hydrogen treatment system and the hydrogen ignition system cooperate with each other. When the detected hydrogen concentration reaches the set value, the hydrogen ignition system is automatically started to ignite the hydrogen for combustion, thereby realizing the function of automatically treating unreacted hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a hydrogen annealing furnace suitable for oriented silicon steel according to the utility model;

[0027] Figure 2 This is a schematic diagram of the connection structure between the hydrogen processing system and the hydrogen concentration detection sensor of the utility model;

[0028] Figure 3It is a structural schematic diagram of the window opening control mechanism of the utility model.

[0029] In the figure:

[0030] 1. Hydrogen treatment system; 11. Gas outlet pipe; 12. Light glass cover; 13. Rubber pipe;

[0031] 2. Water cooling system; 21. Water cooling round wall;

[0032] 3. Air cooling system;

[0033] 4. Hydrogen concentration detection sensor; 41. Optical fiber hydrogen sensor; 42. Hydrogen concentration display; 43. Signal line;

[0034] 5. Vacuum pressure gauge; 6. Evaporation tank; 7. Dew point meter;

[0035] 8. Control panel; 81. Automatic ignition system; 811. Positive and negative wires; 812. Ignition switch; 82. Hydrogen alarm joint control system;

[0036] 91. Receiver; 92. Mover; 93. Clamp. DETAILED DESCRIPTION

[0037] It should be noted that it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0039] The utility model is further described below in conjunction with specific embodiments.

[0040] Example 1

[0041] like Figure 1As shown, a hydrogen annealing furnace device suitable for oriented silicon steel in this embodiment includes a furnace body, and a vacuum pressure gauge 5, an evaporation tank 6, a dew point meter 7 and a control panel 8 are also provided on the furnace body, and the control system is integrated in the control panel 8. The annealing furnace device in this embodiment also includes a hydrogen treatment system 1, a water cooling system 2 and a hydrogen concentration detection sensor 4. Among them, the hydrogen treatment system 1 is arranged on one side of the furnace body, and the hydrogen treatment system 1 includes a gas outlet pipe 11, a lightweight glass cover 12 and a rubber pipe 13.

[0042] One end of the gas outlet pipe 11 is connected to the furnace port to discharge the unreacted hydrogen in the furnace. The other end of the gas outlet pipe 11 extends to the outside and is connected to the automatic ignition system 81. Figure 1 and 2 As shown, the automatic ignition system 81 is integrated into the control panel 8 as a whole. The automatic ignition system 81 includes positive and negative wires 811 and an ignition switch 812. One end of the positive and negative wires 811 is connected to the power supply through the ignition switch 812, and the other end thereof extends into the outlet of the gas outlet pipe 11. When current is passed through the positive and negative wires 811, ignition will occur directly to ignite the hydrogen at the outlet of the gas outlet pipe 11.

[0043] A light glass cover 12 is provided at the outlet of the gas outlet pipe 11. The light glass cover 12 is connected to the furnace body as a whole, and the water outlet of the light glass cover 12 is also connected to the water cooling system 2 through a rubber pipe 13. When the hydrogen is ignited and burned, the water vapor generated flows along the light glass cover 12 to the rubber pipe 13 under the cooling effect of the air, and directly flows into the water cooling system 2 as cooling water.

[0044] The water cooling system 2 is connected to the furnace body through a water cooling circular wall 21, and is used to cool the oriented silicon steel plate at the furnace mouth. The water cooling circular wall 21 can cool the furnace mouth through external water supply on the one hand, and on the other hand, water generated by hydrogen combustion recovered through the rubber pipe 13 can be used as cooling water to achieve cooling.

[0045] In addition, as a further improvement of the present embodiment, in order to further enhance the physical cooling effect of the furnace mouth and prevent the problem of insufficient and uneven recrystallization of oriented silicon steel due to high temperature after annealing, the annealing furnace device of the present invention is also provided with an air cooling system 3 at the furnace mouth for air cooling the furnace mouth, which can cooperate with the water cooling system 2 to quickly cool the oriented silicon steel after annealing.

[0046] like Figure 1 and Figure 2As shown, the hydrogen concentration detection sensor 4 is arranged near the furnace mouth of the furnace body, and is used to detect the hydrogen concentration at the furnace mouth after the reaction is completed. Specifically, the hydrogen concentration detection sensor 4 includes an optical fiber hydrogen sensor 41, a hydrogen concentration display 42 and a signal line 43. The optical fiber hydrogen sensor 41 is arranged at the gas outlet pipe 11, and is used to detect the hydrogen concentration at the furnace mouth. The optical fiber hydrogen sensor 41 is connected to the hydrogen concentration display 42, and the hydrogen concentration detection result can be displayed in real time through the display. The hydrogen concentration detection sensor 4 is electrically connected to the automatic ignition system 81 and the hydrogen alarm joint control system 82 (the hydrogen alarm joint control system 82 is also integrated in the control panel 8), respectively, and the concentration data detected in real time can be fed back to the automatic ignition system 81 and the hydrogen alarm joint control system 82 for processing.

[0047] When the detected hydrogen concentration value is higher than the set value, the automatic ignition system 81 turns on the ignition switch 812 to ignite and burn the hydrogen, thereby realizing automatic processing of hydrogen tail gas.

[0048] When the hydrogen concentration is higher than the safe range, the hydrogen alarm joint control system 82 is activated, an alarm is issued, and corresponding measures are automatically taken. In this embodiment, the hydrogen alarm joint control system 82 is connected to the window opening control mechanism to control and adjust the window opening size. Figure 3 As shown, the window opening control mechanism includes a receiver 91, a mover 92 and a clamp 93. The receiver 91 is electrically connected to the hydrogen alarm joint control system 82 on the one hand, and is electrically connected to the mover 92 on the other hand. One end of the mover 92 is fixedly connected to the window through the clamp 93, and the other end is movably mounted on the wall. When the detected hydrogen concentration is too high, it is transmitted to the receiver 91, triggering and controlling the mover 92 to move, so as to adjust the window opening amount. In addition, once the flame of the automatic ignition system 81 is extinguished or the indoor hydrogen concentration is too high, the alarm joint control system 82 will be triggered, the window will be linked, the window opening amount will be immediately increased, and the exhaust fan will be turned on to increase air circulation to ensure safety.

[0049] Furthermore, in order to improve the stability of movement, two movers 91 can be set in this embodiment. The two movers 91 are symmetrically arranged on the upper and lower sides of the window, and each mover 91 is fixedly connected to the window through a clamping plate 93.

[0050] The process of annealing oriented silicon steel using the annealing furnace device of the utility model is as follows:

[0051] like Figure 1As shown, when annealing the oriented silicon steel, first put the oriented silicon steel sheet into the furnace, then turn on the switches of the nitrogen bottle and the hydrogen bottle, exhaust the gas first, and control the rate of gas flowing into the furnace by rotating the quantum flowmeter. At this time, the hydrogen treatment system 1, the hydrogen concentration detection sensor 4 and the evaporation tank 6 start working. Then set the appropriate annealing temperature through the control panel 8 to treat the oriented silicon steel sheet, and observe the vacuum pressure gauge 5 and the dew point meter 7 to maintain the stability in the furnace and ensure the normal operation of the equipment.

[0052] After the annealing reaction is completed, unreacted hydrogen escapes from the gas outlet pipe 11, and the hydrogen concentration is detected by the optical fiber hydrogen sensor 41. The detection signal is transmitted to the hydrogen concentration detection sensor 4 for signal conversion, and the electrical signal is displayed on the hydrogen concentration display 42. The control system determines whether it exceeds the threshold. If it exceeds, the signal is transmitted to the automatic ignition system 81 through the signal line 43. By controlling the ignition switch 812 to be closed, current is generated in the positive and negative electrode wires 811, allowing the hydrogen to burn. The combustion products are cooled and flow into the rubber pipe 13 along the lightweight glass cover 12 and enter the water cooling system 2. Together with the air cooling system 3, the oriented silicon steel sheet at the furnace mouth is cooled to prevent the problem of insufficient and uneven recrystallization.

[0053] When the hydrogen concentration exceeds a certain safety range, the hydrogen alarm linkage control system 82 sends an alarm signal to the receiver 91, and the receiver 91 controls the movement of the mover 92, driving the splint 93 and the window to move, thereby increasing the window opening amount.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogen annealing furnace device suitable for oriented silicon steel, comprising a furnace body, characterized in that: It also includes a hydrogen processing system (1), a water cooling system (2) and a hydrogen concentration detection sensor (4), wherein: The hydrogen processing system (1) is arranged on one side of the furnace body, and comprises a gas outlet pipe (11), a light glass cover (12) and a rubber pipe (13); one end of the gas outlet pipe (11) is connected to the furnace mouth, and the other end thereof is connected to the automatic ignition system (81); the light glass cover (12) is arranged at the pipe mouth of the gas outlet pipe (11) and is installed on the furnace body, and the water outlet of the light glass cover (12) is connected to the water cooling system (2) through the rubber pipe (13); The water cooling system (2) is connected to the furnace body through a water cooling circular wall (21) and is used to cool the oriented silicon steel sheet at the furnace mouth. The hydrogen concentration detection sensor (4) is arranged near the furnace mouth of the furnace body and is used to detect the hydrogen concentration at the furnace mouth after the reaction is completed. The hydrogen concentration detection sensor (4) is also electrically connected to the automatic ignition system (81). When the detected hydrogen concentration value is higher than the set value, the automatic ignition system (81) is automatically started to ignite and burn the hydrogen.

2. The hydrogen annealing furnace device according to claim 1, characterized in that: The automatic ignition system (81) comprises positive and negative wires (811) and an ignition switch (812); one end of the positive and negative wires (811) is connected to a power source via the ignition switch (812), and the other end thereof extends into the outlet of the gas outlet pipe (11).

3. The hydrogen annealing furnace device according to claim 1, characterized in that: The hydrogen concentration detection sensor (4) comprises an optical fiber hydrogen sensor (41), a hydrogen concentration display (42) and a signal line (43); the optical fiber hydrogen sensor (41) is arranged at the gas outlet pipe (11) and is used to detect the hydrogen concentration at the furnace mouth; the optical fiber hydrogen sensor (41) is connected to the hydrogen concentration display (42).

4. The hydrogen annealing furnace device according to any one of claims 1 to 3, characterized in that: It also includes a hydrogen alarm joint control system (82), which is electrically connected to the hydrogen concentration detection sensor (4) on one hand and to the window opening control mechanism on the other hand, and is used to control the window opening size according to the hydrogen content.

5. The hydrogen annealing furnace device according to claim 4, characterized in that: The window opening control mechanism comprises a receiver (91), a mover (92) and a clamp (93); the receiver (91) is electrically connected to the hydrogen alarm joint control system (82) on one hand, and is electrically connected to the mover (92) on the other hand; one end of the mover (92) is fixedly connected to the window through the clamp (93), and the other end is movably mounted on the wall.

6. The hydrogen annealing furnace device according to claim 5, characterized in that: Two movers (92) are provided, and the two movers (92) are symmetrically arranged on the upper and lower sides of the window, and each mover (92) is fixedly connected to the window via a clamping plate (93).

7. The hydrogen annealing furnace device according to claim 6, characterized in that: It also includes a control panel (8), which is arranged outside the furnace body, and the circuits of the automatic ignition system (81) and the hydrogen alarm joint control system (82) are integrated in the control panel (8).

8. The hydrogen annealing furnace device according to any one of claims 1 to 3, characterized in that: It also includes an air cooling system (3), which is arranged at the furnace mouth of the furnace body and is used to cool the furnace mouth with air.

9. The hydrogen annealing furnace device according to any one of claims 1 to 3, characterized in that: An evaporation tank (6) is arranged on the other side of the furnace body.

10. The hydrogen annealing furnace device according to any one of claims 1 to 3, characterized in that: A vacuum pressure gauge (5) and a dew point meter (7) are also provided on the other side of the furnace body.

Images