CN214172949U - Air brick with automatic alarm device - Google Patents
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- CN214172949U CN214172949U CN202120105304.XU CN202120105304U CN214172949U CN 214172949 U CN214172949 U CN 214172949U CN 202120105304 U CN202120105304 U CN 202120105304U CN 214172949 U CN214172949 U CN 214172949U
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- shaped pipe
- air brick
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Abstract
The utility model relates to an air brick with automatic alarm device. The brick comprises a brick body, wherein an air chamber is formed at the bottom end in the brick body, a plurality of airflow channels are formed in the brick body, one end of each airflow channel is communicated with the air chamber, the other end of each airflow channel penetrates through the brick body, and an opening is formed in the upper end surface of the brick body; the brick is provided with a U-shaped pipe, the U-shaped pipe is embedded into the bottom end inside the brick body, one end of the U-shaped pipe is communicated with the air chamber, and the other end of the U-shaped pipe extends out of the brick body. The utility model discloses need not personnel and observe, the automatic gas cut-off of air brick when air brick uses life-saving, can't continue to use, and the security performance improves greatly.
Description
Technical Field
The utility model relates to an air brick, concretely relates to air brick with automatic alarm device.
Background
The air brick is widely applied to electric furnaces, converters and steel ladles refined outside the furnaces for iron and steel smelting and various non-ferrous metal smelting, the purposes of removing impurities, homogenizing and the like are achieved by blowing inert gases such as argon and the like into the air brick at the bottom of smelting equipment to stir molten steel, molten copper, molten aluminum and the like, and the application of the air brick greatly improves the production efficiency of iron and steel and non-ferrous metal smelting and plays a vital role in improving the quality of final products.
At present, the industrial production is important to ensure safety. The air brick is used at the bottommost part of various smelting equipment, the air brick is provided with a safety alarm section, the air brick can not be used continuously when the air brick is worn to the alarm section in the using process, and otherwise, the risk of safety accidents is caused. Once a safety accident occurs, the safety accident can hardly be compensated, a furnace of products is lost if the safety accident is light, equipment is burnt, production is stopped, and even casualties are damaged if the safety accident is heavy; at present, the application of the air brick is widely popularized, and the use safety becomes the first important index of the air brick used by various smelting enterprises.
The safety alarm device of the existing air brick mainly has two main flows: one is that as shown in fig. 1 and fig. 2, an alarm device is arranged on an alarm section, so that in the smelting process, after the metal solution is poured, whether the alarm device leaks or not is observed as the judgment of alarm, and the main principle is that a material (metal or other refractory material) with color difference with a refractory material body is additionally arranged in an air brick; secondly, the air brick is manufactured into two different shapes (such as square and round) for two times, and whether an alarm point is reached is determined by observing the shape change after the metal solution is poured; at present, the two alarms mainly have two problems in the use process: firstly, an alarm does not appear after the metal solution is poured in the previous time, and the loss of the air brick is rapidly increased due to the fact that the smelting time is too long when the metal solution is used next time because the equipment or the components of the metal solution are unqualified and the like, so that the metal solution leaks at the air brick when the smelting is not finished; secondly, the alarm leaks, because metal liquid or slag is attached to the surface of the air brick, an observer cannot observe the leakage of the alarm due to the fact that the surface of the air brick is not cleaned, or cannot timely find the leakage of the alarm due to reasons such as poor responsibility and the like, and the metal solution leaks to generate accidents due to the fact that the alarm is used online again. The two problems occur frequently in the using process of the air brick, and particularly, the second problem is higher in occurrence frequency.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a need not personnel and observe, the automatic gas block of air brick when the air brick uses life-saving, can't continue to use, the air brick that has automatic alarm device that the security performance improves greatly.
The utility model adopts the technical proposal that: an air brick with an automatic alarm device comprises a brick body, wherein an air chamber is formed at the bottom end in the brick body, a plurality of air flow channels are formed in the brick body, one end of each air flow channel is communicated with the air chamber, the other end of each air flow channel penetrates through the brick body, and an opening is formed in the upper end surface of the brick body; the brick is provided with a U-shaped pipe, the U-shaped pipe is embedded into the bottom end inside the brick body, one end of the U-shaped pipe is communicated with the air chamber, and the other end of the U-shaped pipe extends out of the brick body.
Preferably, the air brick with the automatic alarm device is characterized in that the U-shaped pipe is arranged at the upper end of the air chamber.
Preferably, the distance d between the top end of the U-shaped part of the U-shaped pipe and the set alarm section of the air brick is 80-100 mm.
Preferably, the air brick with the automatic alarm device is characterized in that the U-shaped pipe is a metal pipe.
More preferably, the air brick with the automatic alarm device is characterized in that the metal tube is a brass tube, an aluminum tube or a zinc tube.
Preferably, the air brick with the automatic alarm device is characterized in that the U-shaped pipe is a PPR pipe.
The utility model has the advantages that:
1. the utility model discloses to inlay inside the air brick body with external connection's U type pipe, the outside gas gets into U type pipe earlier, and airtight air chamber is blown in to rethread U type pipe, through airflow channel again, blows in the smelting container with gas.
2. The utility model discloses can choose the U type pipe of different materials for use according to smelting different metals, calculate the laying position of U type pipe in the air brick according to the melting point of smelting temperature, air brick coefficient of heat conductivity, U type pipe, when the air brick loses the warning cross section in the use, the temperature of U type pipe mounted position reaches U type pipe and melts the temperature, and U type pipe begins to melt, and U type pipe melts and blocks up gas passage, and gaseous unable continuation is insufflated. The service life of the air brick can be judged without observing by personnel, and the air brick needs to be replaced.
Drawings
Fig. 1 shows the installation manner of the air brick alarm device in the prior art.
Fig. 2 is a schematic diagram of an alarm state of a gas permeable brick in the prior art.
Fig. 3 is a schematic structural view of the air brick with the automatic alarm device of the present invention.
Fig. 4 is the alarm state diagram of the air brick with the automatic alarm device of the utility model.
Wherein, 1 is a brick body; 2-gas chamber; 3-gas flow channel; 4-U-shaped tube.
Detailed Description
Examples
As shown in figures 3 and 4, the air brick with the automatic alarm device comprises a brick body (1) and a U-shaped pipe (4).
In this embodiment, the shape of brick body (1) adopts trapezoidally, the utility model discloses an air brick does not restrict the shape of air brick, and it is only an example to select trapezoidally here. In this embodiment, the "upper end" of the brick body refers to the end of the air brick opposite to the inner cavity of the smelting container after installation, and the "bottom end" of the brick body refers to the end of the air brick opposite to the outer edge of the smelting container after installation, that is, the end contacting with the outside.
In the brick body (1), the bottom end is provided with an air chamber (2), the air chamber is a closed air chamber, one end of the air chamber is communicated with the U-shaped pipe (4), and the other end of the air chamber is communicated with the airflow channel (3).
A plurality of airflow channels (3) are formed in the brick body (1), one ends of the airflow channels (3) are communicated with the air chamber (2), the other ends of the airflow channels penetrate through the brick body (1), and openings are formed in the upper end surface of the brick body (1). Through the gas flow channel (3), external gas enters the inner cavity of the smelting container.
The air brick is provided with a U-shaped pipe (4), the U-shaped pipe (4) is embedded into the bottom end inside the brick body (1), one end of the U-shaped pipe (4) is communicated with the air chamber (2), and the other end of the U-shaped pipe extends out of the brick body (1) and is connected with an external air source.
Further, the U-shaped pipe (4) is arranged at the upper end of the air chamber (2).
Furthermore, the distance d between the top end (4-1) of the U-shaped part of the U-shaped pipe (4) and the set alarm section (1-1) of the air brick is 80-100 mm.
Further, the U-shaped pipe (4) is a metal pipe.
Furthermore, the metal pipe is a brass pipe, an aluminum pipe or a zinc pipe.
Further, the U-shaped pipe (4) is a PPR pipe.
As a preferred embodiment, when steel is made in the smelting vessel, a brass U-shaped pipe is adopted as the U-shaped pipe (4). The melting point of brass was 1353K (1080 ℃) and the temperature of molten steel in the vessel during steel making was 1853K (1580 ℃), and as shown in FIG. 3, the locations of brass U-shaped tubes were: the distance d between the top end (4-1) of the brass U-shaped pipe and the set alarm section (1-1) of the air brick is about 85-90 mm. The working principle and the process are as follows: in the steelmaking process, when the air brick is worn to the alarm cross section, the temperature of the alarm cross section in contact with molten steel is 1853K of the molten steel temperature, the temperature inside the air brick at a position 90mm away from the lower part of the alarm cross section is 1353K, namely the temperature of the top end of the U-shaped pipe is 1353K, the U-shaped pipe is made of brass, and the melting point of the U-shaped pipe is 1353K, so that when the air brick is eroded to a position 90mm away from the top end of the U-shaped pipe (namely the alarm cross section) in use, the temperature of the position of the U-shaped pipe is 1353K, the brass U-shaped pipe is melted to block an airflow channel, and gas cannot be blown in continuously, and an operator can judge that the air brick has reached the service life and needs to be replaced by observing the gas flow.
Taking steel making as an example, the thermal calculation of the U-shaped pipe embedding position is as follows: it is known that: molten steel temperature of steel ladle in steelmakingThe degree is 1853K (1580 ℃); the melting point of the copper U-tube was 1353K (1080 ℃); the heat flow density q of the air brick material is 27260w/m measured under the conditions of hot end 1853K and cold end 1353K2(ii) a When the temperature of the body of the air brick material is 1853K, the thermal conductivity coefficient lambda 1 of the material is 5.2w/m2K, the thermal conductivity coefficient lambda 2 of the material is 4.6w/m at the temperature of 1353K2k, taking the average thermal conductivity coefficient lambda as 4.9w/m2k is used as a calculation basis; according to a heat flow density calculation formula:
q- λ (T1-T2)/d is derived from the formula d- λ (T1-T2)/q
Wherein: lambda is 4.9w/m2k
T1＝1853k
T2＝1353k
q＝27260w/m2
The distance d is calculated to be 0.09m to 90 mm.
As a preferred embodiment, when copper is smelted in the smelting vessel, an aluminum U-shaped pipe is adopted as the U-shaped pipe (4). The melting point of aluminum is 660 ℃, the temperature of copper water in a smelting container is 1150 ℃ during copper smelting, and as shown in figure 3, the distance d between the top end (4-1) of the aluminum U-shaped pipe and the set alarm section (1-1) of the air brick is about 80-90 mm. In the copper smelting process, when the air brick is worn to the alarm section, the temperature of the alarm section contacted with copper water is 1150 copper water temperature, the temperature inside the air brick at a position about 88mm below the alarm section is 660 ℃, namely the temperature of the top end of the U-shaped pipe is 660 ℃, the material of the U-shaped pipe is aluminum, the melting point is about 660 ℃, therefore, when the air brick is corroded to a position about 88mm above the top end of the U-shaped pipe (namely the alarm section), the temperature of the position of the U-shaped pipe is about 660 ℃, the aluminum U-shaped pipe is melted, an airflow channel is blocked, gas cannot be blown in continuously, and an operator can judge that the air brick reaches the service life by observing the gas flow and needs to be replaced.
As a preferred example, when aluminum is smelted in the smelting vessel, a PPR U-shaped pipe is adopted as the U-shaped pipe (4). The melting point of the PPR is 200-260 ℃, the temperature of molten aluminum in the smelting container during aluminum smelting is 700 ℃, and as shown in figure 3, the distance d between the top end (4-1) of the PPR U-shaped pipe and the set alarm section (1-1) of the air brick is about 80-90 mm. In the aluminum smelting process, when the air brick is worn to the alarm section, the temperature of the alarm section contacted with the molten aluminum is 700 ℃ of the molten aluminum, at the moment, the internal temperature of the air brick at the position 80-90mm away from the lower part of the alarm section is 200-.
Claims (6)
1. The air brick with the automatic alarm device comprises a brick body (1), and is characterized in that an air chamber (2) is formed at the inner bottom end of the brick body (1), a plurality of air flow channels (3) are formed in the brick body (1), one ends of the air flow channels (3) are communicated with the air chamber (2), the other ends of the air flow channels penetrate through the brick body (1), and openings are formed in the upper end surface of the brick body (1); the brick is provided with a U-shaped pipe (4), the U-shaped pipe (4) is embedded into the bottom end inside the brick body (1), one end of the U-shaped pipe (4) is communicated with the air chamber (2), and the other end of the U-shaped pipe extends out of the brick body (1).
2. The air brick with the automatic alarm device is characterized in that the U-shaped pipe (4) is arranged at the upper end of the air chamber (2).
3. The air brick with the automatic alarm device according to claim 2, characterized in that the distance d between the top end (4-1) of the U-shaped part of the U-shaped pipe (4) and the set air brick alarm section (1-1) is 80-100 mm.
4. The air brick with the automatic alarm device according to claim 1, characterized in that the U-shaped pipe (4) is a metal pipe.
5. The air brick with the automatic alarm device according to claim 4, wherein the metal tube is a brass tube, an aluminum tube or a zinc tube.
6. The air brick with the automatic alarm device is characterized in that the U-shaped pipe (4) is a PPR pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120105304.XU CN214172949U (en) | 2021-01-15 | 2021-01-15 | Air brick with automatic alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120105304.XU CN214172949U (en) | 2021-01-15 | 2021-01-15 | Air brick with automatic alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214172949U true CN214172949U (en) | 2021-09-10 |
Family
ID=77592681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120105304.XU Active CN214172949U (en) | 2021-01-15 | 2021-01-15 | Air brick with automatic alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214172949U (en) |
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2021
- 2021-01-15 CN CN202120105304.XU patent/CN214172949U/en active Active
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