CN210254227U

CN210254227U - Immersion type water gap preheating device

Info

Publication number: CN210254227U
Application number: CN201921315543.7U
Authority: CN
Inventors: 王兴华; 李超; 谢振东; 王灵福; 李志强
Original assignee: Jianlong Beiman Special Steel Co Ltd
Current assignee: Jianlong Beiman Special Steel Co Ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-04-07
Anticipated expiration: 2029-08-14

Abstract

The utility model provides an immersion nozzle preheating device, belong to metallurgical industry continuous casting equipment technical field, the utility model discloses an draw and penetrate the right-hand member of discharging fume the pipe and discharge fume a tub fixed connection, draw and penetrate the left end that discharges fume the pipe and link to each other with compressed air pipe, draw and penetrate the upper end of discharging fume the pipe and pass through the elastic component intercommunication with the mouth of a river, the package in the middle of the top at mouth of a river is installed, the elastic component includes the locking ring, elastic splint and toper elastomer, fixed mounting has elastic splint in the locking ring, be provided with the toper elastomer on the elastic splint, the top of elastic splint is arranged in to the mouth of a river, draw and penetrate the hollow frustum's of discharging fume the pipe tip and the junction formation throat of discharging fume the pipe, the pipe of discharging fume is the loudspeaker form, inside forms diffusion discharge chamber. The utility model has the advantages of simple structure, it is sealed effectual to the elastic component adopts high temperature resistant material, makes the effect of toasting better.

Description

Immersion type water gap preheating device

Technical Field

The utility model relates to an immersion nozzle preheating device belongs to metallurgical industry continuous casting equipment technical field.

Background

Before the casting machine is produced, the baking of a tundish and a submerged nozzle is an important link for production preparation, the tundish is a large turnover part commonly used in steelmaking continuous casting production, and an inner liner of the tundish needs to be baked before the tundish is used, so that the moisture in the casting material is fully and completely discharged, and the coating does not fall off and the stopper rod does not crack in the baking process. Most steel mills at present generally use down the device that induced drafts when toasting the mouth of a river, and this device needs a large amount of auxiliary assembly, by the furnace body of refractory material and steel construction preparation, middle-size and small-size fan, the pipe-line system and corresponding water-cooling and air cooling plant that convulsions were used constitute. Since the equipment is in a high temperature state for a long time, the use and maintenance are difficult and the cost is high. The baking effect is not ideal from the current use effect, the baking temperature can not meet the process requirement easily due to improper combustion conditions and wind power coordination of a gas medium in a tundish, the actual temperature is usually less than or equal to 300 ℃ through production practice, the casting success rate is seriously influenced, and the normal production is restricted. If the baking time is too long, the stopper rod head can be baked, normal production cannot be continued, related accidents occur, and the environment is also influenced due to the combustion of gas.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem and further providing an immersion nozzle preheating device.

The utility model provides an immersion nozzle preheating device, is including drawing to penetrate to discharge fume the pipe, discharge fume pipe, compressed air pipe, elastic component and mouth of a river, draw to penetrate the right-hand member of discharging fume the pipe and discharge fume a tub fixed connection, draw to penetrate the left end of discharging fume the pipe and link to each other with compressed air pipe, draw to penetrate the upper end of discharging fume the pipe and pass through the elastic component intercommunication with the mouth of a river, the centre package is installed to the top at mouth of a river.

Furthermore, the left end of the injection smoke exhaust pipe is a hollow cylinder, the right end of the injection smoke exhaust pipe is a hollow conical body, and the hollow cylinder and the hollow conical body are integrally cast and formed.

Furthermore, a throat is formed at the joint of the end part of the hollow conical body of the injection smoke exhaust pipe and the smoke exhaust pipe, and the throat is fixedly connected with the smoke exhaust pipe.

Furthermore, the smoke exhaust pipe is in a horn shape, and a diffusion discharge chamber is formed inside the smoke exhaust pipe.

Furthermore, the hollow cylinder, the hollow conical body and the smoke exhaust pipe of the injection smoke exhaust pipe form a Laval nozzle.

Furthermore, the elastic part comprises a locking ring, an elastic clamping plate and a conical elastic body, the elastic clamping plate is fixedly installed in the locking ring, the conical elastic body is arranged on the elastic clamping plate, and the water gap is arranged above the elastic clamping plate.

Furthermore, two locking rings and two conical elastic bodies are arranged in an up-down symmetrical mode.

The utility model discloses following beneficial effect has: the utility model discloses an install the elastic component with drawing the junction of penetrating the pipe of discharging fume at the mouth of a river, the top of elasticity splint and the tip laminating at the mouth of a river, the below of elasticity splint and the top laminating of penetrating the pipe of discharging fume, the elastic component is tight to its production is pressed from both sides in advance, locks through the locking ring, makes the elastic cone body take place deformation to more laminate with the mouth of a river and nozzle bottom and play sealed effect. The utility model has the advantages of simple structure, it is sealed effectual to the elastic component adopts high temperature resistant material, makes the effect of toasting better.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a schematic view of the structure of the elastic member;

in the figure 1-an injection smoke exhaust pipe; 2-smoke exhaust pipe; 3-compressed air pipe; 4-an elastic member; 5-water gap; 6-laryngeal orifice; 7-a diffusion drain chamber; 8-locking ring; 9-elastic splint; 10-tapered elastomer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 2, and the submerged nozzle preheating device of the embodiment comprises an injection smoke exhaust pipe 1, a smoke exhaust pipe 2, a compressed air pipe 3, an elastic piece 4 and a nozzle 5, wherein the right end of the injection smoke exhaust pipe 1 is fixedly connected with the smoke exhaust pipe 2, the left end of the injection smoke exhaust pipe 1 is connected with the compressed air pipe 3, the upper end of the injection smoke exhaust pipe 1 is communicated with the nozzle 5 through the elastic piece 4, and a tundish is arranged above the nozzle 5; so set up, draw the material of penetrating the pipe of discharging fume for Q235B, the material of discharging fume the pipe is 304 stainless steel, draws the top of penetrating the pipe of discharging fume to be provided with the elastic component as sealing device, draws the compressed air pipe of penetrating the left side installation of the pipe of discharging fume and leads to with the pipe of discharging fume, draws down the heat in the middle package through compressed air to toast the mouth of a river.

The second embodiment is as follows: describing the embodiment by combining the first embodiment, the left end of the injection smoke exhaust pipe 1 is a hollow cylinder, the right end of the injection smoke exhaust pipe 1 is a hollow conical body, the hollow cylinder and the hollow conical body are integrally cast and formed, a throat 6 is formed at the joint of the end part of the hollow conical body of the injection smoke exhaust pipe 1 and the smoke exhaust pipe 2, and the throat 6 is fixedly connected with the smoke exhaust pipe 2; according to the arrangement, the injection smoke exhaust pipe and the smoke exhaust pipe are tightly matched through the conical surface, after the central lines of the two parts are adjusted to be consistent, the external joint is welded into a whole by using a stainless steel argon arc welding process, and the internal space of the injection smoke exhaust pipe forms a negative pressure chamber; further optimizing, the smoke exhaust pipe 2 is in a horn shape, a diffusion discharge chamber 7 is formed inside the smoke exhaust pipe, and the hollow cylinder, the hollow conical body and the smoke exhaust pipe 2 which are used for ejecting the smoke exhaust pipe form a Laval nozzle; the negative pressure chamber, the throat and the diffusion discharge chamber form a Laval nozzle working space, so that a near vacuum effect is efficiently generated in the baking oven.

The third concrete implementation mode: the present embodiment is described with reference to the first to second embodiments, the elastic member 4 includes a locking ring 8, an elastic clamping plate 9 and a tapered elastic body 10, the elastic clamping plate 9 is fixedly installed in the locking ring 8, the tapered elastic body 10 is installed on the elastic clamping plate 9, the water gap 5 is disposed above the elastic clamping plate 9, two locking rings 8 and two tapered elastic bodies 10 are symmetrically disposed up and down, preferably, the material of the elastic member 4 is a fireproof elastic material, in such arrangement, the upper part and the lower part of the elastic splint are symmetrically provided with the locking ring and the conical elastic body, the upper part is used for being connected with the water gap, the lower part is used for being connected with the injection smoke exhaust pipe, the conical elastic body is deformed by extruding the elastic splint at the same time, thereby better laminating reaches sealed effect on the mouth of a river and draws and penetrate the pipe of discharging fume, chooses for use flame resistant high temperature resistant elastic material for use, firstly can change, secondly reduces the wearing and tearing of mouth of a river tip.

The utility model discloses a working process does:

the purpose that the mouth of a river toasted and preheats, be with the high temperature gas in the middle package even during flame introduces the mouth of a river, need the atmospheric pressure of mouth of a river lower part to be less than the atmospheric pressure on mouth of a river upper portion, the utility model discloses a Laval nozzle formula aspiration channel, the principle is that compressed air is at first through drawing and penetrate exhaust pipe 1, because drawing and penetrate 1 inner chamber of exhaust pipe and shrink gradually, air velocity is from subsonic speed to sound velocity, and the air current enters into the diffusion of exhaust pipe 2 and discharges in room 7 afterwards, progressively enlarges, and air velocity is from sound velocity to supersonic speed, and high-speed air current forms the negative pressure in 5 lower parts in the mouth of a river like this, just can bring the heat on mouth of a river upper portion into mouth of a river 5, so just can.

This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.

Claims

1. The utility model provides an immersion nozzle preheating device which characterized in that: including drawing and penetrating pipe (1), the pipe (2) of discharging fume, compressed air pipe (3), elastic component (4) and mouth of a river (5), draw and penetrate the right-hand member of discharging fume pipe (1) and discharge fume pipe (2) fixed connection, draw and penetrate the left end of discharging fume pipe (1) and link to each other with compressed air pipe (3), draw and penetrate the upper end of discharging fume pipe (1) and mouth of a river (5) and pass through elastic component (4) intercommunication, package in the middle of is installed to the top of mouth of a river (5).

2. A submerged entry nozzle preheating apparatus according to claim 1, characterized in that: the left end of the injection smoke exhaust pipe (1) is a hollow cylinder, the right end of the injection smoke exhaust pipe is a hollow conical body, and the hollow cylinder and the hollow conical body are integrally cast and formed.

3. A submerged entry nozzle preheating apparatus according to claim 2, characterized in that: the connecting part of the end part of the hollow conical body of the injection smoke exhaust pipe (1) and the smoke exhaust pipe (2) forms a throat (6), and the throat (6) is fixedly connected with the smoke exhaust pipe (2).

4. A submerged entry nozzle preheating apparatus according to claim 3, characterized in that: the smoke exhaust pipe (2) is in a horn shape, and a diffusion discharge chamber (7) is formed inside the smoke exhaust pipe.

5. The submerged entry nozzle preheating apparatus of claim 4, characterized in that: the hollow cylinder, the hollow conical body and the smoke exhaust pipe (2) of the injection smoke exhaust pipe (1) form a Laval nozzle.

6. A submerged entry nozzle preheating apparatus according to claim 1, characterized in that: the elastic part (4) comprises a locking ring (8), an elastic clamping plate (9) and a conical elastic body (10), the elastic clamping plate (9) is fixedly installed in the locking ring (8), the conical elastic body (10) is arranged on the elastic clamping plate (9), and the water gap (5) is arranged above the elastic clamping plate (9).

7. The submerged entry nozzle preheating apparatus of claim 6, characterized in that: two locking rings (8) and two conical elastic bodies (10) are arranged in an up-down symmetrical mode.