CN212720839U

CN212720839U - Leakage alarm device for runner brick

Info

Publication number: CN212720839U
Application number: CN202020443453.2U
Authority: CN
Inventors: 王瑞利; 王涛; 王瑞强; 康自强
Original assignee: Henan Dongpu Thermal Technology Co ltd
Current assignee: Henan Dongpu Thermal Technology Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2021-03-16
Anticipated expiration: 2030-03-31

Abstract

A taphole brick leakage alarm device belongs to the technical field of aluminum melting furnaces. In the prior art, safety accidents easily occur, the device is provided with a chute at the outlet of a runner brick, a seepage groove is arranged at the outer side of the chute, a thermocouple is embedded in the bottom of the seepage groove, and the thermocouple is connected with a thermometer and an audible and visual alarm. The device is used for leakage alarm of the runner brick.

Description

Leakage alarm device for runner brick

Technical Field

The utility model relates to a belong to and melt aluminium stove technical field, concretely relates to runner brick seepage alarm device.

Background

The runner brick of the aluminum melting furnace is a key part of the aluminum melting furnace, the part is affected by the erosion of aluminum liquid and the temperature difference inside and outside the furnace, the aluminum liquid leakage is easily caused by cracking, and the aluminum liquid leakage is generated inside the runner brick, so that the initial stage is not easy to be noticed, and the later stage is not easy to be blocked by a large amount of leakage, thereby easily causing safety accidents.

Disclosure of Invention

The to-be-solved technical problem of the utility model is how to discover the leakage of runner brick aluminium liquid in advance, for solving the above-mentioned problem, the utility model provides a runner brick leakage alarm device.

A chute is arranged at the position of a taphole brick outlet, a seepage groove is arranged on the outer side of the chute, a thermocouple is embedded in the bottom of the seepage groove, and the thermocouple is connected with a thermometer and an audible and visual alarm.

Furthermore, the seepage groove is provided with a hole connected with the outside air, and the position of the hole is positioned on the side wall of the runner brick and communicated with the seepage groove through a branch groove.

Furthermore, a high-temperature-resistant protective sleeve is sleeved outside the thermocouple.

Further, the distance from the seepage groove to the upper surface of the chute is 2-3 times that from the seepage groove to the lower surface of the chute.

Furthermore, the thermocouple head penetrates through the protective sleeve and is exposed in a gap in the seepage groove.

The utility model discloses relative prior art can discover the runner brick seepage in advance, reminds the staff, and is safer.

Drawings

Fig. 1 is a schematic structural diagram of a runner brick and an alarm device.

Fig. 2 is a schematic view of a flow tile.

FIG. 3 is a schematic view of a furnace throat block construction.

Wherein 1 is a thermocouple; 11 is a coupling head; 12 is a wire; 13 is a protective sleeve; 2 is a thermometer; 3 is a sound-light alarm; 4 is the furnace bottom; 5 is a runner brick; 51 is a chute; numeral 52 denotes a seepage groove; and 6 is a furnace wall.

Detailed Description

The utility model provides a runner brick seepage alarm device, sets up chute 51 in runner brick 5 exit, and the outside of chute 51 sets up seepage groove 52, and seepage groove 52 is located chute 51 below, and seepage groove 52 transverse width is greater than chute 51 transverse width, and seepage groove 52 can be the U type, also can be for half ring type, when setting up, can thicken runner brick, and seepage groove 52 sets up at the thickening portion. The seepage groove 52, the thermocouple 1 is embedded in the bottom of the seepage groove 52, and the thermocouple 1 is connected with the thermometer 2 and the audible and visual alarm 3. The principle of this device is when the seepage takes place for runner brick 5, aluminium liquid must be outwards flowed downwards, high temperature aluminium liquid gets into in the seepage groove 52, the temperature in the seepage groove 52 risees, thermocouple 1 gives thermometer 2 and audible-visual annunciator 3 with real-time temperature signal transmission, surpass the safety range of setting for when this temperature signal, the temperature range that the seepage took place in the seepage groove 52 after high temperature aluminium liquid takes place in runner brick 5 promptly suddenly risees, audible-visual annunciator 3 just can send audible-visual annunciator, the temperature registration that thermometer 2 demonstrates just can be noticed to the staff, the judgement of seepage has taken place for runner brick 5 from this, and then this potential safety hazard is handled early. The seepage grooves 52 are provided with holes communicated with the outside air, the positions of the holes are positioned on the side walls of the runner bricks and are communicated with the seepage grooves 52 through branch grooves, so that the explosive cracking of the runner bricks 5 caused by the increase of gas pressure due to the rise of temperature caused by the seepage of the runner bricks 5 can be avoided. The connection of the seepage grooves 52 with the outside air can also keep the temperature in the seepage grooves 52 stable, that is, the temperature field is in a stable or constant state under normal conditions when the air in the seepage grooves 52 with a relatively deep depth is directly exchanged with the outside environment. When the variation range of the heat source of the temperature field is large, namely when the molten aluminum in the chute 51 of the runner brick 5 leaks, the temperature in the seepage groove 52 rises suddenly, the temperature thermocouple 1 can transmit the temperature variation in the short time to the thermometer 2, and the working personnel can judge the molten aluminum leakage condition of the runner brick 5 according to the temperature variation condition of the thermometer 2.

Further, a high-temperature resistant protective sleeve 13 is sleeved outside the thermocouple 1. It is preferable to select high alumina ceramics as the protection sleeve 13 to protect the lead wire 12 of the thermocouple 1. The protection sleeve 13 can protect the thermocouple 1 from the phenomenon that the leakage of aluminum liquid cannot be found due to the damage of the thermocouple 1 even if the aluminum liquid leaks because the leaked high-temperature aluminum liquid fuses a signal transmission line of the thermocouple 1, and the protection sleeve 13 can avoid the situation. The high-aluminum ceramic has the advantages of low price, mature technology, large temperature range capable of being borne, and good effect on protecting the thermocouple 1.

Further, the distance from the seepage groove 52 to the upper surface of the chute 51 is 2-3 times that from the seepage groove 52 to the lower surface of the chute 51. By arranging a thick heat insulation layer, the temperature in the seepage groove 52 and the temperature in the chute 51 have a large difference, and the temperature can be set to be lower when the audible and visual alarm 3 is set. Normally, the leakage of the runner brick 5 is a slow process, the distance between the seepage groove 52 and the upper surface of the chute 51 is increased to increase the distance between the seepage groove 52 and the high-temperature molten aluminum, so that the temperature difference between the molten aluminum and the temperature in the seepage groove 52 under normal conditions is increased, and when the leakage gradually occurs, the temperature rising condition displayed by the thermometer 2 can be used for presuming whether the runner brick 5 leaks and the leakage degree. According to the requirement of changing the runner brick 5 in the seepage degree decision so as to ensure the safe production, the production operation is more accurate, and the change situation in the production process is mastered in more detail.

Further, the thermocouple 1 has the thermocouple head 11 passing through the protection sleeve 13 and exposed to the gap in the seepage groove 52. The thermocouple 1 has its head 11 exposed to the inside of the seepage groove 52, i.e., the thermocouple 1 is not in contact with the wall surface of the seepage groove 52, and the thermocouple 1 measures the temperature of the air inside the seepage groove 52, not the temperature of the wall surface of the seepage groove 52. When the runner brick 5 leaks, the temperature of the inner wall of the seepage groove 52 close to the leakage point is higher, and the temperature of the inner wall of the seepage groove 52 far away is relatively lower. The heat convection inside the air is faster in heat transfer rate, and the temperature of the air inside the seepage grooves 52 is more consistent relative to the inner walls of the seepage grooves 52. The thermocouple 1 can be measured more accurately by avoiding the contact between the thermocouple 1 head 11 and the inner wall of the seepage groove 52, and the measurement inaccuracy of the thermocouple 1 caused by local uneven heat conduction is avoided.

The working process of the utility model is as follows: this device adopts temperature measurement's mode, and the characteristics that outside temperature rose when utilizing 5 seepage of runner brick detect, send the warning when initial stage seepage, remind operating personnel to inspect and change runner brick 5 to eliminate the potential safety hazard.

While the preferred embodiments of the present invention have been described, it should be understood that various changes and modifications may be made therein by those skilled in the art without departing from the general concept of the invention, and it is intended to cover such changes and modifications as fall within the scope of the invention.

Claims

1. The utility model provides a runner brick seepage alarm device which characterized in that: a chute (51) is arranged at the outlet of the runner brick (5), a seepage groove (52) is arranged at the outer side of the chute (51), a thermocouple (1) is embedded in the bottom of the seepage groove (52), and the thermocouple (1) is connected with a thermometer (12) and an audible and visual alarm (3).

2. The runner brick leakage alarm device of claim 1, further comprising: the seepage grooves (52) are provided with holes communicated with the outside air, and the positions of the holes are positioned on the side walls of the runner bricks and are communicated with the seepage grooves (52) through branch grooves.

3. The runner brick leakage alarm device of claim 1, further comprising: the thermocouple (1) is sleeved with a high-temperature-resistant protective sleeve (13).

4. The runner brick leakage alarm device of claim 1, further comprising: the distance from the seepage groove (52) to the upper surface of the chute (51) is 2-3 times that from the seepage groove (52) to the lower surface of the chute (51).

5. The runner brick leakage alarm device of claim 2, wherein: the thermocouple head (11) of the thermocouple (1) penetrates through the protective sleeve (13) and is exposed in a gap in the seepage groove (52).