CN216770175U

CN216770175U - Nitrogen-sealed water-cooling material pipe

Info

Publication number: CN216770175U
Application number: CN202122432406.5U
Authority: CN
Inventors: 薛聪; 金俊; 曹杰; 吴鑫月
Original assignee: Jiangsu Decheng Metallurgy Electric Furnace Equipment Co ltd
Current assignee: Jiangsu Decheng Metallurgy Electric Furnace Equipment Co ltd
Priority date: 2021-10-10
Filing date: 2021-10-10
Publication date: 2022-06-17
Anticipated expiration: 2031-10-10

Abstract

The utility model discloses a nitrogen-sealed water-cooling material pipe which comprises a dry-type blanking pipe, wherein a pneumatic gate valve is arranged at the upper end of the blanking pipe, and a water-cooling ring is inserted into the lower end of the blanking pipe; a plurality of inflation branch pipes are uniformly arranged on the periphery of the pipe wall of the blanking pipe below the pneumatic gate valve, the inflation branch pipes are connected with an air source through an inflation main pipe, and air outlets of the inflation branch pipes are obliquely arranged downwards towards the central axis direction of the blanking pipe; the outer wall of the lower end of the discharging pipe is wrapped with the water cooling jacket, a water inlet area and a water return area are formed in the water cooling jacket, the bottom of the water inlet area is communicated with the bottom of the water return area, a water inlet is formed in the top of the side wall of the water inlet area, a water outlet is formed in the top of the side wall of the water return area, and the bottom of the pneumatic gate valve and the bottom of the discharging pipe can be effectively protected.

Description

Nitrogen-sealed water-cooling material pipe

Technical Field

The utility model relates to the field of a feeding pipe for a refining furnace, in particular to a nitrogen-sealed water-cooling material pipe.

Background

At present, all the blanking pipes for traditional refining furnace equipment in China adopt a dry type pipeline structure, the dry type blanking pipes are inserted into a water cooling ring arranged at the top of a hearth for cooling, the blanking pipes cannot be completely attached to the water cooling ring, and gaps exist; the material falls through the opening and closing of the pneumatic gate valve (see figure 2); when smelting is carried out in the furnace, the pneumatic gate valve is opened, materials enter the furnace along the feeding pipe, the effect is poor because the temperature in the furnace is nearly 1600 ℃ and the materials are cooled only by the water cooling ring, and a gap is formed between the feeding pipe and the water cooling ring, so that high-temperature gas can directly impact the bottom of the feeding pipe, the bottom of the feeding pipe is easy to burn out and needs to be frequently replaced, the equipment maintenance cost is high, and the construction period is influenced; in addition, high-temperature gas in the furnace goes up along the blanking pipe, so that a valve plate of the pneumatic flap valve is easily heated and deformed, and finally the pneumatic flap valve cannot work normally.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a nitrogen-sealed water-cooling material pipe which is simple in structural design and can effectively protect the bottoms of a pneumatic gate valve and a blanking pipe.

In order to realize the purpose of the utility model, the technical proposal of the utility model is as follows:

a nitrogen-sealed water-cooling material pipe comprises a dry-type blanking pipe, wherein a pneumatic gate valve is arranged at the upper end of the blanking pipe, and a water-cooling ring is inserted into the lower end of the blanking pipe; a plurality of inflation branch pipes are uniformly arranged on the periphery of the pipe wall of the feeding pipe below the pneumatic gate valve, the inflation branch pipes are connected with an air source through an inflation main pipe, and air outlets of the inflation branch pipes are obliquely arranged downwards towards the direction of the central shaft of the feeding pipe; the water cooling sleeve is wrapped on the outer wall of the lower end of the blanking pipe, a water inlet area and a water return area are formed in the water cooling sleeve and are separated into a water inlet area and a water return area, the bottoms of the water inlet area and the water return area are communicated, a water inlet is formed in the top of the side wall of the water inlet area, and a water outlet is formed in the top of the side wall of the water return area.

Preferably, the number of the inflatable branch pipes is at least 3, and the inflatable branch pipes are uniformly distributed along the circumference of the pipe wall of the blanking pipe.

Preferably, the angle between the air outlet of the inflation branch pipe and the central shaft of the blanking pipe is 30-60 degrees.

Preferably, the height of the water cooling jacket is higher than that of the water cooling ring.

Preferably, the water return area is divided into S-shaped water channels by a plurality of horizontally arranged transverse partition plates.

The utility model has the beneficial effects that:

firstly, the method comprises the following steps: adding an inflation branch pipe at the lower part of the pneumatic gate valve, and continuously blowing nitrogen in the feeding process to prevent high-temperature gas from directly impacting the pneumatic gate valve;

secondly, the method comprises the following steps: the outer wall of the lower end of the discharging pipe is wrapped with the water cooling sleeve, the water cooling sleeve is directly attached to the lower end of the discharging pipe, no gap exists, the lower end of the discharging pipe is cooled through water cooling, and meanwhile, the outer ring is provided with the water cooling ring, so that the cooling effect is further ensured, and the service life of the discharging pipe is prolonged.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic view of a conventional blanking tube structure.

FIG. 3 is a schematic view of the direction A-A in FIG. 1.

Fig. 4 is an expanded view of the water jacket.

In the figure: 10 is a feeding pipe, 20 is a pneumatic gate valve, 30 is a water-cooling ring, 40 is an inflation branch pipe, 50 is a water-cooling jacket, 51 is a first longitudinal partition plate, 52 is a second longitudinal partition plate, 53 is a water inlet area, 53.1 is a water inlet, 54 is a water return area, 54.1 is a water outlet, and 55 is a transverse partition plate.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

A nitrogen-sealed water-cooling material pipe comprises a dry-type blanking pipe 10, wherein a pneumatic gate valve 20 is arranged at the upper end of the blanking pipe 10, and a water-cooling ring 30 is inserted into the lower end of the blanking pipe; the periphery of the pipe wall of the feeding pipe 10 below the pneumatic gate valve 20 is uniformly provided with a plurality of inflation branch pipes 40, the inflation branch pipes 40 are not shown in a gas source drawing and are connected with the gas source drawing through an inflation main pipe, gas outlets of the inflation branch pipes 40 are obliquely and downwards arranged towards the central axis direction of the feeding pipe 10, when the feeding is carried out, valves on the inflation branch pipes 40 are opened, a gas seal layer is formed in the feeding pipe 10, then the pneumatic gate valve 20 is opened to start the feeding, and the gas seal layer prevents high-temperature gas from directly impacting the pneumatic gate valve 20 to protect the pneumatic gate valve 20; the outer wall of the lower end of the blanking pipe 10 is wrapped with a water cooling jacket 50, the water cooling jacket 50 is internally divided into a water inlet area 53 and a water return area 54, the bottoms of the water inlet area 53 and the water return area 54 are communicated with each other, a water inlet 53.1 is formed in the top of the side wall of the water inlet area 53, a water outlet 54.1 is formed in the top of the side wall of the water return area 54, and the gas source is nitrogen or other safe inert gases.

Preferably, at least 3 of the gas-filled branch pipes 40 are arranged and evenly distributed along the circumference of the pipe wall of the blanking pipe 10, and most preferably 6 gas-filled branch pipes refer to fig. 3.

Preferably, the angle between the air outlet of the air inflation branch pipe 40 and the central axis of the blanking pipe 10 is 30-60 degrees, and most preferably 45 degrees.

Preferably, the height of the water cooling jacket 50 is higher than that of the water cooling ring 30.

Preferably, the water return area 54 is divided into S-shaped water channels by a plurality of horizontal diaphragm plates 55, the water cooling jacket 50 is internally provided with an upper inlet and an upper outlet, on one hand, the water tubes can only be placed at the upper part of the water cooling jacket 50, the lower part of the water cooling jacket is interfered, on the other hand, the water flow falls from the top and has certain potential energy to increase the flow speed, the water flow reaches the bottom layer firstly, the temperature of the bottom layer is highest, the rapid cooling effect is achieved, then the water flow ascends layer by layer, the water flows out at the highest position, the good water cooling effect is achieved, the bottom of the blanking tube 10 is effectively protected, the service life of the blanking tube 10 is prolonged, and frequent replacement is not needed.

The described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. The nitrogen-sealed water-cooling material pipe comprises a dry-type blanking pipe (10), wherein a pneumatic gate valve (20) is arranged at the upper end of the blanking pipe (10), and a water-cooling ring (30) is inserted into the lower end of the blanking pipe; the method is characterized in that: a plurality of inflation branch pipes (40) are uniformly arranged on the periphery of the pipe wall of the blanking pipe (10) below the pneumatic gate valve (20), the inflation branch pipes (40) are connected with an air source through an inflation main pipe, and air outlets of the inflation branch pipes (40) are obliquely arranged downwards towards the direction of a central shaft of the blanking pipe (10); the water cooling device is characterized in that the outer wall of the lower end of the blanking pipe (10) is wrapped by a water cooling jacket (50), a water inlet area (53) and a water return area (54) are separated into in the water cooling jacket (50) by a first longitudinal partition plate (51) and a second longitudinal partition plate (52) which are longitudinally arranged, the bottoms of the water inlet area and the water return area are communicated, a water inlet (53.1) is formed in the top of the side wall of the water inlet area (53), and a water outlet (54.1) is formed in the top of the side wall of the water return area (54).

2. The nitrogen-sealed water-cooled tube of claim 1, wherein: the number of the inflatable branch pipes (40) is at least 3, and the inflatable branch pipes are uniformly distributed along the circumference of the pipe wall of the blanking pipe (10).

3. The nitrogen-sealed water-cooled tube according to claim 1 or 2, characterized in that: the angle between the air outlet of the inflation branch pipe (40) and the central axis of the blanking pipe (10) is 30-60 degrees.

4. The nitrogen-sealed water-cooled tube of claim 1, wherein: the height of the water cooling jacket (50) is higher than that of the water cooling ring (30).

5. The nitrogen-sealed water-cooled tube of claim 1, wherein: the water return area (54) is divided into S-shaped water channels by a plurality of horizontal diaphragm plates (55).