CN212109564U

CN212109564U - Device for reducing ball accumulation in water seal tank of circular cooler

Info

Publication number: CN212109564U
Application number: CN202020578845.XU
Authority: CN
Inventors: 刘雪峰; 李永付; 倪晋权; 李金平; 戚日明; 张兵; 曹洪涛; 张家峰
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-12-08
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a device of cold quick-witted water seal inslot amass ball of reduction ring, including the relative stove outer covering plate that sets up platform truck breast board brick and be located platform truck breast board brick top, form pelletizing material receiving storehouse in the platform truck breast board brick that sets up and the stove outer covering plate relatively, the clearance has between the top of platform truck breast board brick and the bottom of stove outer covering plate, corresponds the clearance in the platform truck breast board brick outside and is equipped with the water seal groove, still includes the baffle, the bottom at the stove outer covering plate is established to the baffle, and the lower extreme of baffle stretches into downwards between a pair of platform truck breast board brick of relative setting, space has between the lower extreme of baffle and the inner wall of platform truck breast board brick. The height difference between the partition plate and the trolley breast board forms a labyrinth mode structure, so that pellets can be effectively prevented from entering a water seal groove of the annular cooler, the fault caused by water seal ball accumulation of the annular cooler is eliminated, the air leakage rate of the annular cooler is reduced, the heat energy loss is reduced, and the energy consumption is reduced; the labor amount of cleaning accumulated balls of the water seal tank every shift of the post manually is eliminated, and the potential safety hazard of manually cleaning the accumulated balls of the water seal tank on line is eliminated.

Description

Device for reducing ball accumulation in water seal tank of circular cooler

Technical Field

The utility model belongs to the technical field of the metallurgical technology and specifically relates to a device that reduces cold quick-witted water seal inslot amalgamation ball of ring.

Background

The circular cooler is one of three main machines for producing pellet ore of a chain grate machine and a rotary kiln, and has the main functions of performing blast cooling on high-temperature pellets discharged from the rotary kiln so as to be safely transmitted and stored, and simultaneously recovering heat from the high-temperature pellets for the front-stage process (the high-temperature gas discharged by the circular cooler is sent to the chain grate machine and the rotary kiln).

The running state of the circular cooler not only directly affects the production capacity and pellet quality of the chain-return-ring system, but also has important influence on the energy consumption and running cost of the whole system.

In the actual production operation, red balls in the rotary kiln are dumped into a material pile in a material receiving warehouse of the circular cooler, and because the height of the material pile can not be accurately controlled, in the floating process of the material pile in the material receiving warehouse, excessive red balls can be pushed into the inner ring water seal groove and the outer ring water seal groove from the tops of the side fence plates at two sides of the trolley, balls are accumulated in the grooves to cause the extrusion between the water seal cutter and the water seal wall plate, so that the deformation of the water seal cutter, the damage of the water seal groove plate and the damage of an expansion joint between the water seal grooves are caused, and the shutdown accident is caused; because the water seal assembly is damaged and loses the sealing effect, the air leakage of the circular cooler is increased, the heat balance of the chain kiln system is broken, and the balling quality is influenced and the energy consumption is increased. Because production can not be stopped, the production burden is caused by ensuring that the water seal is free from faults within a period of time.

In the production process, four groups of post personnel are required to clean the inner and outer ring water seal groove accumulated balls of the ring cooling machine when the workers are in a shift, the four groups adopt a segmented contract system, the cleaning work of the water seal groove accumulated balls with the length of five meters is basically completed every shift every day, because the water tank space is limited by 280mm and 300mm in height, the cleaning can only be performed in a water-free seal cutter area at the lower part of an observation door of a dumping area of a dumper in operation, the cleaning process is limited by space, and the cleaning work is slow. And the district of unloading of overturning is close to and receives the feed bin only 3 meters distance, and heat radiation is serious on every side, and the raise dust of material stream is blown away by hot-blast when unloading, receives the dust that hot-blast mingled with during the ball cleaning to be surrounded, and the cleaning work is very painstaking, and post personnel can not stand, and the work that increases intactly strikes the post very big, even if the ball is cleaned in shift, the condition restriction clearance also can not be thorough, and the equipment trouble frequency that the cold ring took place because of water ponding ball.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to solve the technical problem that a device for reducing ball accumulation in the water seal tank of the circular cooler is provided, which can effectively avoid the ball to enter the water seal tank of the circular cooler.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

this reduce device of cold quick-witted water seal inslot amass ball of ring, including setting up the platform truck breast board brick relatively and the stove outer covering plate that is located platform truck breast board brick top, the relative platform truck breast board brick that sets up forms the pelletizing in and the stove outer covering plate and receives the material storehouse, the clearance has between the top of platform truck breast board brick and the bottom of stove outer covering plate, corresponds the clearance in the platform truck breast board brick outside and is equipped with the water seal groove, still includes the baffle, the bottom at the stove outer covering plate is established to the baffle, and the lower extreme of baffle stretches into downwards between a pair of platform truck breast board brick of relative setting, the space has between the lower extreme of baffle and the inner wall of platform truck breast board brick.

Furthermore, the upper end of the partition plate is fixed at the bottom of the furnace shell plate, and the lower end of the partition plate is vertically downward.

The distance between the lower end of the partition board and the trolley breast board bricks is more than or equal to 100 mm.

The lower end of the partition plate is 200mm and 250mm lower than the top of the trolley sideboard brick.

The trolley breast board bricks are arranged on the upper surface of the trolley, and the distance from the lower end of the partition board to the upper surface of the trolley is more than or equal to 760 mm.

The baffle is a bent plate structure, a supporting plate used for bearing furnace shell plate bricks is arranged on the inner side of the bottom of the furnace shell plate, and the upper portion of the baffle is arranged above the supporting plate.

The partition plates are arranged in a group side by side, and the distance between every two adjacent partition plates is 3-5 mm.

The bending structure of baffle includes horizontal plate and last riser and lower riser, it establishes in horizontal plate one side to go up the riser, and the opposite side at the horizontal plate is established to the lower riser, and the horizontal plate is located the layer board top, goes up the riser and fixes mutually with the lower part of furnace shell board.

The upper vertical plate of the partition plate is connected with the lower part of the furnace shell plate through bolts, and reinforcing steel is arranged on the outer side of the lower part of the furnace shell plate corresponding to the joint of the bolts for supporting.

Furnace shell plate bricks are arranged above the supporting plates, and the horizontal plates of the partition plates are positioned between the furnace shell plate bricks and the supporting plates.

Compared with the prior art, the utility model, have following advantage:

the device for reducing the balls accumulated in the water-sealed tank of the annular cooler is reasonable in structural design, the height difference between the partition plate and the trolley fence plate forms a labyrinth mode structure, and in view of poor flowing characteristics of high-temperature balls, the balls are controlled to be prevented from overflowing in the receiving warehouse by forming a special structure through the partition plate, so that the balls can be effectively prevented from entering the water-sealed tank of the annular cooler, the fault caused by the water-sealed balls accumulated in the annular cooler is eliminated, the air leakage rate of the annular cooler is reduced, the heat energy loss is reduced, and the energy consumption is reduced; the labor amount of cleaning accumulated balls of the water seal tank every shift of the post manually is eliminated, and the potential safety hazard of manually cleaning the accumulated balls of the water seal tank on line is eliminated.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

fig. 1 is a schematic view of the structure of the device of the present invention.

Fig. 2 is a schematic view of the pellets of the present invention in the apparatus.

Fig. 3 is a schematic view of the structure of the partition board of the present invention.

In the figure:

1. the furnace comprises a trolley upper surface, 2 trolley fence bricks, 3 furnace shell bottom plates, 4 water seal grooves, 5 furnace shell plates, 6 material receiving storehouses, 7 partition plates, 8 furnace shell plate bricks and 9 pellets.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the device for reducing balls accumulated in the water seal groove of the circular cooler comprises a trolley fence brick 2 and a furnace shell plate 5 arranged above the trolley fence brick, wherein the pellets are formed in the trolley fence brick and the furnace shell plate which are arranged oppositely and are received in a material storage 6, a gap is formed between the top of the trolley fence brick and the bottom of the furnace shell plate, and a water seal groove 4 is arranged at the outer side of the trolley fence brick corresponding to the gap.

A partition plate 7 is fixed at the bottom of the furnace shell plate, the lower end of the partition plate extends downwards into the space between a pair of trolley fence plate bricks which are oppositely arranged, and a space is reserved between the lower end of the partition plate and the inner wall of the trolley fence plate bricks.

The upper end of the clapboard 7 is fixed at the bottom of the furnace shell plate, and the lower end of the clapboard is vertically downward; the distance between the lower end of the partition board and the trolley breast board brick is more than or equal to 100 mm; the lower end of the partition plate is 200mm and 250mm lower than the top of the trolley sideboard brick; the trolley breast board bricks are arranged on the upper surface of the trolley, and the distance from the lower end of the partition board to the upper surface of the trolley is more than or equal to 760 mm.

The height difference between the partition plate and the trolley breast board forms a labyrinth mode structure, and in view of poor flowing characteristics of high-temperature pellets 9, the pellets are controlled in the receiving warehouse to be prevented from overflowing through a special structure formed by the partition plate, so that the pellets can be effectively prevented from entering a water-sealed tank of the annular cooler, the fault caused by water-sealed ball accumulation of the annular cooler is eliminated, the air leakage rate of the annular cooler is reduced, the heat energy loss is reduced, and the energy consumption is reduced; the labor amount of cleaning accumulated balls of the water seal tank every shift of the post manually is eliminated, and the potential safety hazard of manually cleaning the accumulated balls of the water seal tank on line is eliminated.

The partition plates are arranged in a group side by side, the distance between every two adjacent partition plates is 3-5mm, the installation is simple and convenient, and the adjacent partition plates cannot be influenced.

The baffle is the plate structure of bending, and the bottom inboard of furnace shell board is equipped with the layer board that is used for bearing the weight of furnace shell plate brick 8, and the layer board is aligned with the furnace shell bottom plate 3 of establishing in the furnace shell board bottom outside, and the upper portion of baffle 7 is taken above the layer board, compact structure, and is fixed reliable.

The bending structure of baffle includes horizontal plate and last riser and lower riser, it establishes in horizontal plate one side to go up the riser, and the opposite side at the horizontal plate is established to lower riser, and the horizontal plate is located the layer board top, and it is fixed mutually with the lower part of furnace shell board to go up the riser.

The upper vertical plate of the clapboard is connected with the lower part of the furnace shell plate through bolts, and reinforcing steel is arranged at the outer side of the lower part of the furnace shell plate corresponding to the joint of the bolts for supporting. Furnace shell plate bricks are arranged above the supporting plates, and the horizontal plates of the partition plates are positioned between the furnace shell plate bricks and the supporting plates. The baffle is fixed reliably and is not easy to loosen.

Preferred specific examples are:

in view of the non-flowable characteristic of the red balls, the red balls are prevented from being extruded into the water seal tank as a route, the red balls in the receiving warehouse are subjected to surrounding control by adopting a labyrinth principle, partition plates with surrounding action are additionally arranged on the inner surface and the outer ring of the receiving warehouse, the height difference between the partition plates and trolley fence plates forms a labyrinth mode, and the red balls are controlled in the receiving warehouse to be prevented from overflowing. The design idea of the partition board adopts two groups of Z-shaped 90-degree folded angle blocking hanging boards made of heat-resistant and steel-casting parts, requires no deformation and abrasion resistance at 1200 ℃, and is arranged on two sides of the inner ring and the outer ring of the receiving warehouse.

The baffle plates are evenly arranged and hung on the furnace shell plate according to the arc state, the position is adjusted, the back of the blocking baffle plate keeps the distance between the back of the blocking baffle plate and the trolley breast board bricks to be more than or equal to 100mm, the lower bottom surface is 200mm lower than the top of the breast board and the height between the lower bottom surface and the trolley plane is more than or equal to 760 mm.

The installation position of the blocking baffle is standard to prevent the material pile in the material receiving warehouse from overflowing, so that excessive material pile red balls are prevented from turning into the water seal tank in production; the partition plate is made of heat-resistant, wear-resistant and steel casting, and has no deformation and wear resistance (similar to the material of a scraper plate of a grate) at the temperature of 1200 ℃; the mounting bolt requires a stainless steel high-strength bolt, and the nut must be welded firmly by electric welding after being fixed.

After the inner ring and the outer ring of the receiving bin of the ring cooling machine adopt Z-shaped red ball blocking clapboards, red balls are thoroughly eliminated from entering the inner ring water seal groove and the outer ring water seal groove, the extrusion and abrasion deformation of a water seal cutter are avoided, and the equipment failure caused by water seal ball accumulation is eliminated; the manual periodical ball cleaning work of the posts is thoroughly eliminated, and the manual water accumulation ball cleaning operation is not performed at the posts; the phenomenon of a large amount of hot air leakage caused by the loss of the sealing effect due to the breakage of the water seal is basically eliminated.

Direct economic benefits:

1. the existing water seal is replaced by one set every year, the cost is about 15 ten thousands (spare parts and installation), the service life of the water seal can be prolonged by one set for 4 years, and the cost of the spare parts is reduced by about 60 thousands

2. On average, it takes 4 hours per month to deal with water seal failure, reducing production by about 1200 tons of balls. The annual production-reducing cost is saved by about 1200 multiplied by 12 multiplied by 60 yuan/ton to 86.4 ten thousand yuan

3. The coal gas consumption generated by air leakage is reduced, and the blast furnace coal gas amount is at least saved every day as follows: 4.0 ten thousand m 3/h; the method can save the blast furnace gas amount in one year as follows: 4.0 × 365 ═ 1640 ten thousand m 3/h; the heat value of blast furnace gas is: 3.6GJ/km3, the converted heat value is 16400 multiplied by 3.6 which is 52560 coked, the price of blast furnace gas is 14 yuan/GJ, therefore, the gas cost can be saved by 52560 multiplied by 14 which is 735840 yuan, namely about 73.58 ten thousand yuan each year.

The three items are combined, so that the cost can be saved each year: 60+86.4+73.58 equals 219.98 ten thousand yuan.

The specific implementation method comprises the following steps:

designing a Z-shaped partition plate according to the field geometric dimension; dismantling all the refractory materials on the walls in the receiving warehouse and recovering; uniformly arranging and hanging the blocking partition plates on the bottom of the furnace shell according to the arc state; position adjustment is carried out, so that the back of the blocking partition plate keeps a distance larger than or equal to 100mm from the breast board brick, the lower bottom surface is 200mm lower than the top of the breast board, and the height between the lower bottom surface and the plane of the trolley is larger than or equal to 760 mm; the blocking plate is fixed on the furnace shell plate auxiliary channel steel foundation firmly and reliably by using M32 stainless steel bolts; the H-shaped steel is additionally provided with the upright columns outside to be used as the external support of the arc furnace shell plate, so that the safety and stability of the internal hanging piece are enhanced; the refractory is recovered and the project is finished.

The above-mentioned is only for the description of the preferred embodiments of the present invention, and the above-mentioned technical features can be combined at will to form a plurality of embodiments of the present invention.

The present invention has been described in detail with reference to the accompanying drawings, and it is apparent that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.

Claims

1. The utility model provides a reduce device of cold quick-witted water seal inslot amass ball of ring, includes the relative stove outer covering plate that sets up platform truck breast board brick and be located platform truck breast board brick top, the relative platform truck breast board brick that sets up forms the pelletizing in and the stove outer covering plate and receives the material storehouse, the clearance has between the top of platform truck breast board brick and the bottom of stove outer covering plate, corresponds the clearance in the platform truck breast board brick outside and is equipped with water seal groove, its characterized in that: the furnace shell plate structure is characterized by further comprising a partition plate, wherein the partition plate is arranged at the bottom of the furnace shell plate, the lower end of the partition plate extends downwards into a space between the pair of trolley fence plate bricks which are oppositely arranged, and a space is formed between the lower end of the partition plate and the inner wall of each trolley fence plate brick.

2. The apparatus for reducing ball accumulation in the water seal tank of the circular cooler according to claim 1, characterized in that: the upper end of the clapboard is fixed at the bottom of the furnace shell plate, and the lower end of the clapboard is vertically downward.

3. The apparatus for reducing ball accumulation in the water seal tank of the circular cooler according to claim 1, characterized in that: the distance between the lower end of the partition board and the trolley breast board bricks is more than or equal to 100 mm.

4. The apparatus for reducing ball accumulation in the water seal tank of the circular cooler according to claim 1, characterized in that: the lower end of the partition plate is 200mm and 250mm lower than the top of the trolley sideboard brick.

5. The apparatus for reducing ball accumulation in the water seal tank of the circular cooler according to claim 1, characterized in that: the trolley breast board bricks are arranged on the upper surface of the trolley, and the distance from the lower end of the partition board to the upper surface of the trolley is more than or equal to 760 mm.

6. The apparatus for reducing ball accumulation in the water seal tank of the circular cooler according to claim 1, characterized in that: the baffle is a bent plate structure, a supporting plate used for bearing furnace shell plate bricks is arranged on the inner side of the bottom of the furnace shell plate, and the upper portion of the baffle is arranged above the supporting plate.

7. The apparatus for reducing ball accumulation in the water seal tank of the circular cooler according to claim 1, characterized in that: the partition plates are arranged in a group side by side, and the distance between every two adjacent partition plates is 3-5 mm.

8. The apparatus for reducing ball accumulation in a water seal tank of a circular cooler according to claim 6, characterized in that: the bending structure of baffle includes horizontal plate and last riser and lower riser, it establishes in horizontal plate one side to go up the riser, and the opposite side at the horizontal plate is established to the lower riser, and the horizontal plate is located the layer board top, goes up the riser and fixes mutually with the lower part of furnace shell board.

9. The apparatus for reducing ball accumulation in a water seal tank of a circular cooler according to claim 8, wherein: the upper vertical plate of the partition plate is connected with the lower part of the furnace shell plate through bolts, and reinforcing steel is arranged on the outer side of the lower part of the furnace shell plate corresponding to the joint of the bolts for supporting.

10. The apparatus for reducing ball accumulation in a water seal tank of a circular cooler according to claim 9, wherein: furnace shell plate bricks are arranged above the supporting plates, and the horizontal plates of the partition plates are positioned between the furnace shell plate bricks and the supporting plates.