CN204185505U - A kind of blast furnace props up iron runner cover plate - Google Patents

Abstract

The utility model belongs to the field of smelting blast furnace equipment, in particular to a cover plate of a blast furnace support iron ditch. After the snake-shaped metal water pipe is embedded inside the cover plate, clay refractory is used to cast it into a sandwich form around it. The center line of the snake-shaped metal water pipe is 60mm to 80mm away from the outer surface of the hot surface of the cover plate. At the water inlet of the snake-shaped metal water pipe A high-pressure water pump is arranged, and the high-pressure water pump draws water from a cooling water tank, and the water inlet of the serpentine metal water pipe leads into the cooling water tank. The utility model reduces the temperature of the hot surface of the cover plate, reduces the fluctuation of the temperature of the hot surface of the cover plate before and after tapping, effectively reduces the thermal stress, greatly improves the service life of the cover plate, and reduces the production cost.

Description

A blast furnace support iron ditch cover plate

technical field

The utility model belongs to the field of smelting blast furnace equipment, in particular to a cover plate of a blast furnace support iron ditch.

Background technique

During the tapping process of the blast furnace, molten iron enters the molten iron tank through the iron ditch. In order to ensure the safety of personnel and improve the dust removal effect, the top of the iron ditch needs to be covered with a heat-insulating cover to ensure that personnel and machinery in front of the furnace can pass through the iron ditch safely. .

At present, the common support iron ditch cover plate is made of pouring clay refractory material in the iron frame. Because the temperature of the hot surface fluctuates greatly before and after tapping, and is affected by thermal stress, the refractory material is easy to fall off, causing the iron frame to be roasted red or even Burning leakage, short service life, and serious safety hazards.

Utility model content

The technical problem to be solved by the utility model is to provide a blast furnace iron channel cover plate, which aims to improve the safety of the iron channel cover plate, increase the service life to 8 weeks, and reduce the cost at the same time.

The utility model is realized in this way. A cover plate of a blast furnace support iron ditch is embedded with a snake-shaped metal water pipe in the inside of the cover plate. The outer surface of the hot surface is 60mm to 80mm. A high-pressure water pump is installed at the water inlet of the serpentine metal water pipe. The high-pressure water pump draws water from a cooling water tank, and the water inlet of the snake-shaped metal water pipe leads into the cooling water tank.

Further, in the above achievable technical solution, multiple rows of semicircular protrusions with a diameter of 90 mm to 100 mm are provided on the outer surface of the heating surface of the cover plate.

Compared with the prior art, the utility model has the beneficial effect that a serpentine metal water pipe is embedded in the cover plate of the branch iron ditch. During the production process, the high-pressure water enters the serpentine stainless steel pipe from the water inlet, flows in the serpentine pipe, absorbs heat, and is discharged into the high-pressure water drainage tank from the water outlet to reduce the temperature of the hot surface of the cover plate and reduce the temperature of the hot surface of the cover plate before and after tapping. fluctuations, effectively reducing thermal stress and greatly improving the service life of the cover. The semicircular protrusions further increase the heat dissipation area in contact with heat. In addition, due to the influence of the semicircular protrusions and thermal stress, they can fall off the cover first, thereby prolonging the service life of the cover.

Description of drawings

Fig. 1 is the equipment structure schematic diagram that the utility model embodiment provides;

Fig. 2 is a schematic view of the side structure of the cover plate provided by the embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Fig. 1 combined with Fig. 2, a cover plate of a blast furnace support iron ditch is embedded with a serpentine metal water pipe 3 inside the cover plate 1 and then cast with clay refractory material 2 to form a sandwich, in which the center of the serpentine metal water pipe 3 is The line distance from the hot surface 6 of the cover plate 1 is 60 mm to 80 mm. A high-pressure water pump 4 is arranged at the water inlet of the snake-shaped metal water pipe 3. The high-pressure water pump 4 pumps water from a cooling water tank 5. The water inlet of the snake-shaped metal water pipe 3 Pass into the cooling water tank 5.

As shown in Figure 2, the outer surface 6 of the hot surface of the cover plate 1 is provided with multiple rows of semicircular protrusions 7 with a diameter of 90 mm to 100 mm. The semicircular protrusions 7 play two functions: one is to further increase the heat dissipation area in contact with heat , In addition, due to the influence of the semicircular protrusion and the thermal stress, it can fall off from the cover first, thereby prolonging the service life of the cover.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (2)

1. A blast furnace support iron ditch cover plate is characterized in that, after the inside of the cover plate is embedded with a serpentine metal water pipe, clay refractory is used to pour into a sandwich form, wherein the center line of the serpentine metal water pipe is far from the hot surface of the cover plate The outer surface is 60mm-80mm. A high-pressure water pump is installed at the water inlet of the serpentine metal water pipe. The high-pressure water pump draws water from a cooling water tank, and the water inlet of the snake-shaped metal water pipe leads into the cooling water tank. 2. The cover plate of the blast furnace iron channel according to claim 1, characterized in that, the outer surface of the hot surface of the cover plate is provided with a plurality of rows of semicircular protrusions with a diameter of 90 mm to 100 mm.