Leakage-proof device for iron runner of iron-making blast furnace

Abstract

The utility model relates to the technical field of blast furnace metallurgy, and particularly discloses a leakage-proof device for an iron runner of an ironmaking blast furnace, which comprises an iron runner body and a plurality of iron runner seats positioned under the iron runner body, an electric push rod motor is arranged at the bottom of each iron runner seat, a measuring point of a thermocouple is arranged at the bottom end in each iron runner seat, and the thermocouple is connected with a controller through a thermocouple data line. The controller is electrically connected with the electric push rod motor, the multiple iron runner bases are horizontally attached and aligned, and a lamplight warning indicator is arranged at the bottom of each iron runner base. According to the technical scheme, the iron runner base is arranged at the bottom of the iron runner body, when molten iron leaks into the iron runner base from the iron runner body, the thermocouple monitors the rapid change of the temperature of the iron runner base, and the controller automatically controls the electric push rod motor to lift the corresponding iron runner base to be tightly attached to the leakage position of the iron runner body for blocking and leakage prevention; and at the moment, the proximity sensor triggers the warning lamp to prompt, so that the effects of timely plugging leakage points of the iron runner body and alarming leakage are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace metallurgy, in particular to an iron ditch leakage prevention device for an ironmaking blast furnace. Background Art

[0002] In a blast furnace's iron trough, the turbulent zone 1-2 meters from the taphole and the lining at the bottom of the slag skimmer are most susceptible to leakage. These areas are directly exposed to mechanical erosion and corrosion from the hot molten iron and slag, and therefore deteriorate relatively quickly. Specifically, the blast furnace iron trough is the channel that guides and fully separates the hot molten iron and slag. Its lining material must withstand the intense erosion, chemical attack, and penetration of the molten iron and slag, as well as the temperature fluctuations caused by intermittent tapping. During the tapping process, the molten iron temperature reaches approximately 1500°C, and after tapping stops, the trough lining temperature drops sharply. This rapid cooling and heating process places high demands on the performance of the lining material. Molten iron leakage from the iron trough can easily cause serious accidents, necessitating improvements. Therefore, we propose a leak-proof device for the iron trough of an ironmaking blast furnace. Utility Model Content

[0003] The purpose of the utility model is to provide an iron ditch leakage prevention device for an ironmaking blast furnace, which solves the problems raised in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for preventing iron ditch leakage in an ironmaking blast furnace, comprising an iron ditch body and a plurality of iron ditch seats located directly below the iron ditch body, an electric push rod motor being arranged at the bottom of the iron ditch seat, a thermocouple measuring point being arranged at the bottom end of the iron ditch seat, the thermocouple being connected to the controller via a thermocouple data line, the controller being electrically connected to the electric push rod motor, a plurality of iron ditch seats being arranged horizontally and aligned, and a light warning device being arranged at the bottom of the iron ditch seat.

[0005] Furthermore, the light warning device includes a cylindrical seat, a proximity sensor is fixedly provided on the top of the cylindrical seat, a warning light is fixedly provided on the circumferential surface of the cylindrical seat, and the proximity sensor is connected to the warning light through a microcontroller.

[0006] Furthermore, the electric push rod motor is fixed to the center position of the base by bolts, and the top surface of the base is provided with inclined surfaces on the left and right sides about the center line, and the slope of the inclined surfaces is set to 10°~15°.

[0007] Furthermore, the bottom of the iron groove seat is connected to the base through several sleeve mechanisms. The sleeve mechanisms include a light rod fixed to the bottom of the iron groove seat and a sleeve fixed to the surface of the base. The light rod is embedded in the sleeve. Four sleeve mechanisms are set at the bottom of an iron groove seat, which are rectangularly distributed around the electric push rod motor.

[0008] Furthermore, the size and shape of the inner cavity of the iron groove seat are consistent with the size and shape of the outer bottom side of the iron groove body.

[0009] Furthermore, a heat insulation plate is provided between the push rod of the electric push rod motor and the bottom of the iron groove seat.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] The technical solution of the present application is to set an iron groove seat at the bottom of the iron groove body. When the iron groove body leaks molten iron into the iron groove seat, the thermocouple monitors the sharp change in temperature of the iron groove seat. The controller automatically controls the electric push rod motor to lift the corresponding iron groove seat close to the leakage point of the iron groove body to seal and prevent leakage. At this time, the proximity sensor triggers the warning light to prompt, thereby achieving the effect of timely sealing the leakage point of the iron groove body and the leakage alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 This is a three-dimensional diagram of an iron ditch leakage prevention device for an ironmaking blast furnace according to the present invention;

[0014] Figure 2 This is a side view of an iron ditch leakage prevention device for an ironmaking blast furnace according to the utility model;

[0015] Figure 3 It is a structural diagram of a light warning device.

[0016] In the figure: 1. Base; 101. Inclined surface; 2. Light warning device; 201. Columnar seat; 202. Warning light; 203. Proximity sensor; 3. Electric push rod motor; 4. Sleeve mechanism; 401. Sleeve; 402. Polished rod; 5. Iron groove seat; 6. Iron groove body; 7. Thermocouple. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Example 1, as Figure 1-3As shown, the utility model provides a technical solution: a device for preventing iron groove leakage in an iron-making blast furnace, comprising an iron groove body 6 and several iron groove seats 5 located directly below the iron groove body 6. The port of the iron groove body 6 is aligned with the blast furnace iron nozzle. The iron groove body 6 is supported above the iron groove seat 5 by a bracket. An electric push rod motor 3 is provided at the bottom of the iron groove seat 5. A measuring point of a thermocouple 7 is provided at the bottom end of the iron groove seat 5. The thermocouple 7 is connected to the controller through a thermocouple data line. The controller is electrically connected to the electric push rod motor 3. Several iron groove seats 5 are arranged in a horizontal fit and alignment. A light warning device 2 is provided at the bottom of the iron groove seat 5. The power of the electric push rod motor 3, the controller and the light warning device 2 are all powered by a power line.

[0019] In a specific embodiment of the present invention, the iron ditch seat 5 and the iron ditch body 6 are both made of silicon carbide bricks. The iron ditch seat 5 is distributed in the iron ditch body 6 1-2 meters away from the iron water outlet area. The molten iron in this area flows faster on the iron ditch body 6, and leakage points are prone to occur. The size of the inner cavity of the iron ditch seat 5 is consistent with the size of the outer bottom side of the iron ditch body 6, so that the inner cavity of the iron ditch seat 5 can be completely fitted with the outer bottom side of the iron ditch body 6, thereby achieving a blocking effect. The thermocouple is connected to the controller via a thermocouple data line, and the thermocouple is also connected to the alarm system of the blast furnace monitoring room via a thermocouple data line. When the thermocouple detects a sharp change in the temperature of the iron groove seat, not only does the electric push rod motor 3 under the corresponding iron groove seat 5 act, but an alarm is also issued on the alarm system of the blast furnace monitoring room. The proximity sensor 203 is used to monitor the position of the iron groove seat 5. When the iron groove seat 5 is within the signal detection range of the proximity sensor 203, the warning light 202 is not on. When the iron groove seat 5 is lifted and fits the bottom of the iron groove body 6, it exceeds the signal detection range of the proximity sensor 203, thereby starting the warning light 202 through the microcontroller to issue a warning, so that the staff can find the leakage point in time.

[0020] In the preferred technical solution, the light warning device 2 includes a cylindrical seat 201, a proximity sensor 203 is fixedly provided on the top of the cylindrical seat 201, and a warning light 202 is fixedly provided on the circumferential surface of the cylindrical seat 201. The proximity sensor 203 is connected to the warning light 202 through a microcontroller. The proximity sensor 203 is used to monitor the position of the iron groove seat 5. When the iron groove seat 5 exceeds the signal detection range of the proximity sensor 203, the warning light 202 is activated by the microcontroller to warn. The warning light 202 is a flashing light to facilitate finding the position.

[0021] In the preferred technical solution, the electric push rod motor 3 is fixed to the center position of the base 1 by bolts. The top surface of the base 1 is provided with a slope 101 on the left and right sides about the center line. The slope of the slope 101 is set to 10°. The base 1 is provided with a slope to prevent secondary leakage of molten iron from accumulating on the surface of the base 1, thereby reducing damage to the electric push rod motor 3.

[0022] In the preferred technical solution, the bottom of the iron groove seat 5 is connected to the base 1 through several sleeve mechanisms 4. The sleeve mechanisms 4 include a light rod 402 fixed to the bottom of the iron groove seat 5 and a sleeve 401 fixed to the surface of the base 1. The light rod 402 is embedded in the sleeve 401. During the lifting and lowering process of the iron groove seat 5, the light rod 402 can slide inside the sleeve 401 to improve the lifting and lowering stability of the iron groove seat 5.

[0023] In the preferred technical solution, the inner cavity size and shape of the iron groove seat 5 are consistent with the outer bottom side size and shape of the iron groove body 6, so that the inner cavity of the iron groove seat 5 can completely fit with the outer bottom side of the iron groove body 6, thereby achieving a sealing effect.

[0024] In the preferred technical solution, a heat insulation board is provided between the push rod of the electric push rod motor 3 and the bottom of the iron groove seat 5 to isolate the electric push rod motor 3 from the iron groove seat 5 and extend the service life of the electric push rod motor 3 .

[0025] To sum up: an iron groove seat 5 is set at the bottom of the iron groove body 6. When the iron groove body 6 leaks molten iron into the iron groove seat 5, the thermocouple 7 monitors the sharp change in the temperature of the iron groove seat. The controller receives the signal for control and the thermocouple is also connected to the alarm system of the blast furnace monitoring room through the thermocouple data line. Not only does the electric push rod motor 3 under the corresponding iron groove seat 5 act, but an alarm prompt is also issued on the alarm system of the blast furnace monitoring room. The corresponding iron groove seat is pressed against the leakage of the iron groove body to seal and prevent leakage, and at this time the proximity sensor triggers the warning light to prompt, thereby achieving the effect of timely sealing the leakage point of the iron groove body and the leakage alarm.

Claims

1. A device for preventing leakage of iron trough in an ironmaking blast furnace, characterized in that: The invention comprises an iron groove body (6), and a plurality of iron groove seats (5) located directly below the iron groove body (6); an electric push rod motor (3) is provided at the bottom of the iron groove seat (5); a measuring point of a thermocouple (7) is provided at the bottom end of the interior of the iron groove seat (5); the thermocouple (7) is connected to a controller via a thermocouple data line; the controller is electrically connected to the electric push rod motor (3); the plurality of iron groove seats (5) are arranged to be aligned and aligned horizontally; and a light warning device (2) is provided at the bottom of the iron groove seat (5).

2. The iron ditch anti-leakage device for an ironmaking blast furnace according to claim 1, characterized in that: The light warning device (2) comprises a cylindrical seat (201), a proximity sensor (203) is fixedly provided on the top of the cylindrical seat (201), a warning light (202) is fixedly provided on the circumferential surface of the cylindrical seat (201), and the proximity sensor (203) is connected to the warning light (202) via a microcontroller.

3. The iron ditch leakage prevention device for an ironmaking blast furnace according to claim 1, characterized in that: The electric push rod motor (3) is fixed to the center position of the base (1) by bolts. The top surface of the base (1) is provided with inclined surfaces (101) on the left and right sides about the center line. The slope of the inclined surface (101) is set to 10° to 15°.

4. The iron ditch anti-leakage device for an ironmaking blast furnace according to claim 1, characterized in that: The bottom of the iron groove seat (5) is connected to the base (1) via a plurality of sleeve mechanisms (4), wherein the sleeve mechanisms (4) comprise a polished rod (402) fixed to the bottom of the iron groove seat (5) and a sleeve (401) fixed to the surface of the base (1), wherein the polished rod (402) is embedded in the sleeve (401).

5. The iron ditch anti-leakage device for an ironmaking blast furnace according to claim 1, characterized in that: The size and shape of the inner cavity of the iron groove seat (5) are consistent with the size and shape of the outer bottom side of the iron groove body (6).

6. The iron ditch anti-leakage device for an ironmaking blast furnace according to claim 1, characterized in that: A heat insulation plate is provided between the push rod of the electric push rod motor (3) and the bottom of the iron groove seat (5).

Images