CN215288854U - Water cooling device for lower sealing valve of charging bucket for blast furnace - Google Patents
Water cooling device for lower sealing valve of charging bucket for blast furnace Download PDFInfo
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- CN215288854U CN215288854U CN202121900369.XU CN202121900369U CN215288854U CN 215288854 U CN215288854 U CN 215288854U CN 202121900369 U CN202121900369 U CN 202121900369U CN 215288854 U CN215288854 U CN 215288854U
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- blast furnace
- steel pipe
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- sealing valve
- charging bucket
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Abstract
The utility model belongs to the technical field of the metallurgical equipment, especially, relate to a material jar lower seal valve water cooling plant for blast furnace. The structure is simple, the operation is convenient, the cost is low, and the normal production of the blast furnace is favorably ensured. Comprises a seamless steel pipe; the first end of the seamless steel pipe is communicated with a high-pressure water distribution bag for blast furnace spraying, and the second end of the seamless steel pipe is communicated with the upper conical section of the charging bucket below the upper sealing valve of the charging bucket.
Description
Technical Field
The utility model belongs to the technical field of the metallurgical equipment, especially, relate to a material jar lower seal valve water cooling plant for blast furnace.
Background
The charging bucket is one of the feeding devices of the blast furnace, and is arranged above a feeding hole of the blast furnace as shown in figure 2; the top of the charging bucket is provided with a receiving bucket which is connected with the inlet of the charging bucket through a proportioning valve, the inlet of the charging bucket is provided with an upper sealing valve, and the outlet of the charging bucket is provided with a lower sealing valve. The lower part of the charging bucket sequentially enters the blast furnace through a distributor and a charging chute.
The lower sealing valve of the charging bucket is one of important devices for blast furnace material distribution, and is used for sealing the gas of the furnace top charging bucket so as to ensure the operation of the blast furnace under pressure and ensure the pressure of the furnace top. The lower sealing valve requires the silicon rubber sealing ring to be intact in the production process so as to ensure tight sealing gas. When the working environment of the lower sealing valve exceeds 150 ℃, the silicon rubber sealing ring is damaged due to high temperature for a long time, and during the replacement of the silicon rubber sealing ring, about 5 hours are needed from the ignition of the manhole at the furnace top to the completion of the replacement of the sealing ring and the re-sealing of the ignition manhole, so that serious economic loss is caused for the production of the blast furnace.
Disclosure of Invention
The utility model provides a water cooling device of a lower sealing valve of a charging bucket for a blast furnace, aiming at the defects existing in the prior art.
In order to achieve the purpose, the utility model adopts the following technical proposal, which is characterized in that the device comprises a seamless steel tube; the first end of the seamless steel pipe is communicated with a high-pressure water distribution bag for blast furnace spraying, and the second end of the seamless steel pipe is communicated with the upper conical section of the charging bucket below the upper sealing valve of the charging bucket.
Further, the high-pressure water dividing bag is used for spraying and cooling the outer surface of the top of the existing blast furnace.
Further, the seamless steel pipe is connected with a standby valve of the high-pressure water distributing drum for blast furnace spraying.
Furthermore, a flowmeter, an electric switch valve and a manual 6-minute ball valve are installed on the seamless steel pipe.
Further, the high-pressure water dividing bag is communicated with a high-pressure water inlet pipe.
Further, the lower conical section of the charging bucket is provided with a temperature measuring sensor.
Compared with the prior art the utility model discloses beneficial effect.
The utility model has simple structure, convenient operation and low cost, and provides favorable guarantee for the normal production of the blast furnace. The water cooling of the lower sealing valve can be realized by utilizing the existing equipment in steel mill production and adding small-cost parts, so that the energy-saving and environment-friendly effects are achieved.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.
Fig. 1 is a schematic structural view of a lower sealing valve water-cooling device in embodiment 1.
Fig. 2 is a schematic diagram of the relationship between a bucket and other devices in the prior art.
In the figure, 1 is an upper sealing valve, 2 is a charging bucket, 3 is a lower sealing valve, 4 is an upper conical section, 5 is a seamless steel pipe, 6 is a flow meter, 7 is a ball valve, 8 is an electric switch valve, 9 is a standby valve, 10 is a high-pressure water distributing drum, 11 is a water pipe opening, 12 is a receiving hopper, 13 is a distributing device, 14 is a charging chute, 15 is a batching valve, 16 is a material flow regulating valve, and 17 is a blast furnace.
Detailed Description
As shown in fig. 1, the embodiment 1 includes a seamless steel pipe 5; the first end of the seamless steel tube 5 is communicated with a high-pressure water distributing drum 10 for spraying of a blast furnace 17, and the second end of the seamless steel tube 5 is communicated with the upper conical section 4 of the charging bucket 2 below the upper sealing valve 1 of the charging bucket 2, namely, the opening is butted. The high-pressure water dividing bag 10 is a high-pressure water dividing bag 10 for spraying and cooling on the outer surface of the furnace top of the existing blast furnace 17, namely the high-pressure water dividing bag 10 for water pumping; the high-pressure water distributing bag 10 is communicated with a high-pressure water inlet pipe.
Preferably, the seamless steel pipe 5 is connected with a standby valve 9 of a high-pressure water-dividing bag 10 for spraying of the blast furnace 17. And the seamless steel pipe 5 is provided with a flowmeter 6, an electric switch valve 8 and a manual 6-minute ball valve 7. The ball valve 7 is used for realizing manual operation, and the electric switch valve 8 is used for realizing automatic control. This can be replaced by a manual ball valve 7 in case of a malfunction of the electric on-off valve 8. Meanwhile, the ball valve 7 can also realize manual water drainage.
Preferably, a temperature measuring sensor is arranged on the lower conical section of the charging bucket 2; and when the temperature exceeds the threshold value, the water cooling device is started to realize water cooling.
Specifically, a high-pressure water distributing bag 10 for pumping water on the outer surface of the top of the existing blast furnace 17 is arranged on a standby valve 9, (the pressure of the high-pressure water distributing bag 10 is 800 kpa), and a 33.7mm seamless steel pipe 5 is introduced to the conical section of the charging bucket 2 at the lower part of the upper sealing valve 1. Because the conical section (provided) of the charging bucket 2 is provided with the wear-resistant lining plate and because of the inclination angle of the conical section, the blockage of the steel pipe orifice by the raw fuel can be avoided. The water dividing bag is installed on a 33.7mm steel pipe, a hole is formed in the steel pipe for welding, and a 6-dividing stainless steel ball valve 7, an installation electric valve and a flowmeter 6 are installed on the steel pipe. And the horizontal section steel pipe is butted with the conical section of the charging bucket 2 at a position which does not influence the site environment and is 2 meters away from the upper dense platform.
When the sensor monitors that the lower sealing valve 3 exceeds the standard, the electric switch valve 8 on the steel pipe with the diameter of 33.7mm of the water distribution bag at the top of the furnace is opened, and water is injected into the charging bucket 2 (the gas pressure of the charging bucket 2 is 250 kpa). High-pressure water flows to the valve plate of the lower sealing valve 3 along the tank wall and raw fuel (in a coke or sinter gap) to cool the lower sealing valve plate. The water quantity is estimated by the flowmeter 6 and the water pumping time, and after about 2 minutes of water pumping time of each tank, the electric switch valve 8 is closed to protect the silicon rubber sealing ring of the lower sealing valve 3 from being damaged. Meanwhile, the water quantity is controlled within a reasonable range, so that the temperature can be reduced, and the subsequent combustion of the fuel is not influenced. The steps are repeated, when the temperature of the furnace top (when the temperature value of the sensor of the lower sealing valve 3 is normal), the charging bucket 2 stops injecting water, the standby valve 9 on the high-pressure water distributing drum 10 is closed, and the 6-time ball valve 7 is opened to discharge the water in the steel pipe when the charging bucket 2 is not pressure-equalized, so that the steel pipe is prevented from being frozen and cracked in winter. The normal production of the blast furnace 17 is guaranteed.
The process flow comprises the following steps: 1. the water-pouring high-pressure water-distributing drum 10 is manufactured on a standby valve 9 at the top of the furnace, and is guided to the conical section of the charging bucket 2 at the lower part of the upper sealing valve 1 by a seamless steel pipe 5 with the diameter of 33.7 mm.
2. A33.7 mm steel pipe is arranged in the water dividing bag, a 6-minute stainless steel ball valve 7 is arranged in the opening of the steel pipe, and an electric valve and a flowmeter 6 are arranged in the opening of the steel pipe.
3. And the horizontal section steel pipe is butted with the conical section of the charging bucket 2 at a position which does not influence the site environment and is 2 meters away from the upper dense platform.
4. When the temperature of the furnace top is overhigh (or the temperature of the temperature measuring sensor is overhigh), the temperature of the lower sealing valve 3 can be indirectly reflected due to the temperature of the furnace top; therefore, the furnace top temperature monitored by the original main control room can be used as a temperature measuring means. And opening an electric valve on a 33.7mm steel pipe of the furnace top water-dividing drum on a microcomputer picture of the main control room, injecting water into the charging bucket 2, and cooling the lower sealing valve plate.
5. The water quantity is displayed by the flowmeter 6, the water pumping time of each tank is about 2 minutes, and the silicon rubber sealing ring of the lower sealing valve 3 is protected from being damaged.
6. And stopping injecting water into the charging bucket 2 when the temperature of the top of the charging bucket is normal, closing the standby valve 9 on the high-pressure water distributing drum 10, and opening the 6-time ball valve 7 to discharge the water in the steel pipe when the pressure of the charging bucket 2 is not equalized.
It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (6)
1. A water cooling device for a bucket lower sealing valve for a blast furnace is characterized by comprising a seamless steel pipe; the first end of the seamless steel pipe is communicated with a high-pressure water distribution bag for blast furnace spraying, and the second end of the seamless steel pipe is communicated with the upper conical section of the charging bucket below the upper sealing valve of the charging bucket.
2. The water cooling device for the under-bucket sealing valve of the blast furnace as claimed in claim 1, wherein: the high-pressure water distributing bag is used for spraying and cooling the outer surface of the furnace top of the existing blast furnace.
3. The water cooling device for the under-bucket sealing valve of the blast furnace as claimed in claim 1, wherein: the seamless steel pipe is connected with a standby valve of the high-pressure water distributing drum for blast furnace spraying.
4. The water cooling device for the under-bucket sealing valve of the blast furnace as claimed in claim 1, wherein: and the seamless steel pipe is provided with a flowmeter, an electric switch valve and a manual 6-minute ball valve.
5. The water cooling device for the under-bucket sealing valve of the blast furnace as claimed in claim 4, wherein: the high-pressure water distributing bag is communicated with a high-pressure water inlet pipe.
6. The water cooling device for the under-bucket sealing valve of the blast furnace as claimed in claim 1, wherein: the lower cone section of the charging bucket is provided with a temperature measuring sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121900369.XU CN215288854U (en) | 2021-08-14 | 2021-08-14 | Water cooling device for lower sealing valve of charging bucket for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121900369.XU CN215288854U (en) | 2021-08-14 | 2021-08-14 | Water cooling device for lower sealing valve of charging bucket for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215288854U true CN215288854U (en) | 2021-12-24 |
Family
ID=79527246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121900369.XU Active CN215288854U (en) | 2021-08-14 | 2021-08-14 | Water cooling device for lower sealing valve of charging bucket for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215288854U (en) |
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2021
- 2021-08-14 CN CN202121900369.XU patent/CN215288854U/en active Active
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