CN213257076U

CN213257076U - Tundish heating device

Info

Publication number: CN213257076U
Application number: CN202022199679.5U
Authority: CN
Inventors: 纪国峰; 徐全兴; 赵利明
Original assignee: Maanshan New Conda Magnetic Industrial Co ltd
Current assignee: Ma'anshan Xinkangda Magnetic Industry Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-05-25
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a tundish heating device belongs to tundish heating field, and this tundish heating device includes liquefied gas tank, the flame gun of being connected with liquefied gas tank, the flame gun be connected with the tundish dustcoat through advancing the fire head, the inside tundish that is provided with of tundish dustcoat, the surface of tundish is provided with the channel of igniting, the channel of igniting is the surface of heliciform winding at the tundish, and the bottom of tundish is provided with the honeycomb duct. The utility model discloses a flame gun spouts inside flame to middle package dustcoat, and the rethread channel of igniting carries out the direct heating to the middle package, has avoided in the past directly to the problem that there is the potential safety hazard of the interior molten steel heating of middle package, and the setting of the channel of igniting simultaneously can heat the surface of middle package all around, guarantees to improve heating efficiency when the heating effect of middle package, simple structure, reasonable in design, easily manufacturing simultaneously.

Description

Tundish heating device

Technical Field

The utility model belongs to middle package heating field, more specifically say, relate to a middle package heating device.

Background

The tundish is a refractory container used in short-flow steelmaking, firstly receives molten steel poured from a ladle, and then the molten steel is distributed to various crystallizers through a tundish nozzle. Most of the tundishes used in the smelting in the market at present adopt an electric heating mode, or molten steel in the tundishes are directly combusted by flame, and the condition that the molten steel is too dangerous when the molten steel is directly combusted by the flame is avoided, so that the tundishes are combusted in the market and then the molten steel is heated, but the common tundishes have poor molten steel heating effect, and the molten steel quality is reduced; therefore, the market urgently needs to develop a recyclable tundish to help people to solve the existing problems.

Corresponding improvement has also been carried out to above-mentioned problem, like chinese patent application No. cn201721390976.x, the public day is 2018 6 months 29 days, and this patent discloses a gas preheats middle package, including middle inclusion, middle inclusion lateral wall fixed mounting has the support, support middle part fixed mounting has the baffle, baffle lateral wall fixed mounting has the through-hole, support outer end fixed mounting has the installation cavity, installation cavity outer end wall has gas spray gun through screw thread fixed mounting, the fixed intercommunication in gas spray gun outer end has the gas jar body, gas jar external wall fixed mounting has the gas spray gun switch. The disadvantages of the patent are that: the support is easy to damage, the service life of the whole part is short, and the maintenance is complicated.

As another example, chinese patent application No. CN201620603088.0, published as 2016, 12, and 7, discloses a tundish induction heater, which comprises a square iron core and an induction heating coil wound on the iron core, wherein a cooling air duct is arranged at the upper part of the iron core, and a filter screen grid for preventing external impurities from entering the cooling air duct is welded at the inlet of the cooling air duct. The grid size of the filter screen grid is 11cm x 3cm, and the distance between the filter screen grid and the inlet of the cooling air duct is 20-25 cm. The disadvantages of the patent are that: the whole installation is complicated, and the heating effect is not ideal.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

To the current poor problem that has the potential safety hazard of just operating the tundish heating effect, the utility model provides a tundish heating device. The utility model discloses a flame gun spouts inside flame to middle package dustcoat, and the rethread channel of igniting carries out the direct heating to the middle package, has avoided in the past directly to the problem that there is the potential safety hazard of the interior molten steel heating of middle package, and the setting of the channel of igniting simultaneously can heat the surface of middle package all around, guarantees to improve heating efficiency when the heating effect of middle package, simple structure, reasonable in design, easily manufacturing simultaneously.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a middle package heating device, includes liquefied gas storage tank, the flame gun of being connected with liquefied gas storage tank, the flame gun be connected with middle package dustcoat through advancing the flame head, the inside middle package that is provided with of middle package dustcoat, the surface of middle package is provided with the passageway of igniting, the passageway of igniting is the surface of heliciform winding in middle package, the one end and the first intercommunication of advancing of passageway of igniting, the bottom of middle package is provided with the honeycomb duct.

Furthermore, the two ends of the top of the tundish outer cover are provided with arc sections, and the arc sections are bent towards the inside of the tundish outer cover.

Furthermore, the surface of one side of the circular arc section facing the tundish is coated with refractory materials.

Furthermore, the liquefied gas tank is communicated with a gas hose through a vent pipe, the gas hose is communicated with the flame gun, and the vent pipe is provided with an adjusting valve.

Furthermore, the vent pipe is connected with the gas hose through a flange.

Further, the inner wall of the liquefied gas tank is provided with a heat insulation layer.

Furthermore, a plurality of hooks are arranged on the tundish outer cover.

Furthermore, four corners of the bottom of the tundish cover are provided with seat legs.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses well flame gun gets into the inside of pouring basket dustcoat with liquefied gas through advancing the flame, then the flame of liquefied gas spirals along the heliciform firing channel of pouring basket surface and rises and heat the pouring basket and avoid directly in the past to the too dangerous condition of hot metal heating in the pouring basket to take place, simultaneously because the surface of firing channel and pouring basket is laminated all around so as to reach the effect of heating the pouring basket fast high-efficiently, improve the operation security performance when effectively improving pouring basket heating efficiency;

(2) the utility model discloses both ends at middle package dustcoat top all are provided with the circular arc section to the circular arc section is crooked to middle package dustcoat inside, can continue to spray downwards when making flame rise to middle package dustcoat top thereby directly heat the molten steel in the middle package, and the circular arc section plays the effect to flame guide, changes the trend of flame, further guarantees the heating effect of middle package;

(3) the liquefied gas tank in the utility model is communicated through two pipes, which is convenient for maintenance and disassembly; meanwhile, the gas transmission hose is communicated with the flame gun to provide liquefied gas for the flame gun, the service life of the whole part is longer, and meanwhile, the regulating valve is arranged on the vent pipe to control the starting and stopping of the liquefied gas, so that the operation is simple and convenient; the inner wall of the liquefied gas tank is provided with the heat insulation layer, and as the liquefied gas tank is filled with fuel gas, the arrangement of the heat insulation layer can effectively avoid the inner wall of the liquefied gas tank from being worn to influence the use, thereby ensuring certain safety performance;

(4) the utility model discloses a refractory material has all been scribbled on the arc section towards one side surface of centre package and at the inner wall of centre package, and the high temperature resistance performance of arc section and centre package can effectively be improved in refractory material's setting, because of the arc section is long-term with flame direct contact, the centre package is long-term with molten steel direct contact, therefore the life of arc section and centre package has effectively been improved in refractory material's setting to the cost of maintenance of equipment has been reduced;

(5) the utility model is provided with a plurality of hooks on the tundish outer cover, which is convenient for the integral hoisting of the tundish outer cover, thereby facilitating the transportation of the tundish, facilitating the hoisting of the tundish to other positions for reuse after the temperature of the tundish is cooled, and the hoisting mechanism is not directly contacted with the tundish, avoiding the tundish from being worn, and further improving the service life of the tundish;

(6) the utility model discloses four turnings in the bottom of middle package dustcoat all are provided with the seat leg, and the setting of seat leg has strengthened the bulk strength of middle package dustcoat, makes it keep higher steadiness ability in middle package molten steel pouring in-process to whole operation process's security has further been ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the tundish cover of the present invention.

In the figure: 1. a liquefied gas tank; 2. a breather pipe; 3. adjusting a valve; 4. a gas hose; 5. a flame gun; 6. a tundish outer cover; 7. a seat leg; 8. hooking; 9. a flow guide pipe; 10. a fire inlet head; 11. a fire angle; 12. a tundish; 13. a firing channel.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings.

Example 1

As shown in fig. 1 and 2, a tundish heating device comprises a liquefied gas tank 1 and a flame gun 5 connected with the liquefied gas tank 1. The inner wall of the liquefied gas tank 1 is provided with a heat insulation layer, the heat insulation layer is made of ceramic fibers, and the material has a high heat insulation effect and has certain fireproof performance. Because of the inside gas that holds dress of liquefied gas jar 1, overall temperature is higher, thereby the setting up of insulating layer can effectively avoid 1 interior wall of liquefied gas jar to receive the influence of high temperature gas for a long time and take place wearing and tearing to influence the condition of using, improves liquefied gas jar 1's life. Specifically, liquefied gas jar 1 passes through breather pipe 2 and gas transmission hose 4 intercommunication, and gas transmission hose 4 and flame gun 5 intercommunication, and be provided with governing valve 3 on breather pipe 2, governing valve 3 rotates with breather pipe 2 to be connected and realizes opening of liquefied gas transmission to 4 work of gas transmission hose and stop. The breather pipe 2 sets up in the top at 1 tops of liquefied gas jar, the flow of the liquefied gas of being convenient for, and breather pipe 2 and 1 formula structures as an organic whole of liquefied gas jar, and processing is simple and convenient and connect the steadiness height. Preferably, the vent pipe 2 and the gas hose 4 are connected through flanges in the embodiment, the flange connection relationship is stable and easy to detach and mount, and the mounting and maintenance efficiency is improved. The flame gun 5 is connected with the tundish cover 6 through a flame inlet head 10, and the flame inlet head 10 is arranged on the tundish cover 6. Advance the flame head 10 and be a transition piece, advance the flame head 10 in this implementation and be a sealed cavity, the inside that the flame gun 5 spun enters into tundish dustcoat 6 through advancing the flame head 10, flame has a cushioning effect inside advancing the flame head 10, and tundish dustcoat 6 easily takes place wearing and tearing because of instantaneous high temperature when avoiding the direct and tundish dustcoat 6 contact of flame gun 5. Middle package 12 of 6 inside tundishes that are provided with of package dustcoat, middle package 12 and middle package dustcoat 6 fixed connection, the surface of middle package 12 is provided with ignition passageway 13, ignition passageway 13 is the surface of heliciform winding at middle package 12, ignition passageway 13 is inside be the outside inclosed passageway of cavity promptly, and ignition passageway 13 adopts the better material of heat conductivity to make, make flame can be fine transmit the heat for middle package 12 when ignition passageway 13 is inside to flow, then heat middle package 12. The outer surface of package 12 in the middle of so the outer surface of firing channel 13 and middle package 12 all contacts all around because of it is the heliciform winding, and sets firing channel 13 and middle package 12 to an organic whole structure, and the preparation is simple and convenient and connect firmly, and the one end and the advancing fire head 10 intercommunication of firing channel 13 advance the flame in fire head 10 and enter into the inside circulation that circulates of firing channel 13 through this end of firing channel 13. The bottom of the tundish 12 is provided with the draft tube 9, the draft tube 9 and the tundish 12 are of an integrated structure, and the tundish 12 is simple and convenient to manufacture and stable in connection relation.

The working principle of the utility model is as follows: before the tundish 12 is used, a fireproof material is coated inside the tundish 12, then the regulating valve 3 on the liquefied gas tank 1 is opened to provide liquefied gas for the flame gun 5, the flame gun 5 sprays flame into the tundish outer cover 6 through the flame inlet head 10, and the flame spirals and rises in the ignition channel 13 on the outer surface of the tundish 12, so that the tundish 12 is heated, and the effect of indirectly heating molten steel is realized. After the tundish 12 is used, the inner wall of the tundish 12 is coated with refractory material for recycling after the tundish 12 is cooled. The utility model discloses a middle package cover 6 wraps up flame in the inside of middle package cover 6 for flame has avoided traditional flame direct heating molten steel to have had the problem of certain potential safety hazard in the surface of middle package 12 to middle package 12 heating, can reach the effect of heating to the molten steel again simultaneously, and the setting up of firing channel 13 makes all heating all around to middle package 12 surface, and heating efficiency is high, avoids the condition of molten steel quality decline to take place. The whole structure is simple, the design is reasonable, and the manufacture is easy. And the condition that the traditional tundish 12 cannot be recycled by adopting electric heating is changed, and the cost of enterprises is further reduced.

Furthermore, in order to further ensure the heating effect on the molten steel, in this embodiment, both ends of the top of the tundish cover 6 are provided with arc sections, and the arc sections are bent towards the inside of the tundish cover 6. The arc section and the tundish outer cover 6 are of an integrated structure, and the arc section is convenient to manufacture and stable in connection relation. The setting of circular arc section makes and has formed two angle of fuse 11 at middle package dustcoat 6 top, when flame rises to middle package dustcoat 6 top along firing channel 13, because the circular arc section plays a guide effect to flame, make flame just spray downwards to middle package dustcoat 6 inside along the circular arc section when the circular arc section, because of the molten steel is incessant topples over to middle package 12 inside, the direction through the circular arc section makes flame heat the molten steel, make the molten steel keep high temperature and liquefaction state always, prevent that the molten steel from solidifying, can flow out in honeycomb duct 9 smoothly at last. In order to further guarantee the service life of the arc section, a fireproof material is coated on the surface of one side, facing the tundish 12, of the arc section, and the service life of the arc section can be effectively prolonged due to the fact that the arc section is in direct contact with flame for a long time. Since the refractory material is the prior art, it is not described in detail in this embodiment.

Example 2

Basically, with embodiment 1, in order to improve the mobility of the whole tundish heating device and alleviate the human labor, a plurality of hooks 8 are arranged on the tundish outer cover 6 in the implementation, and the hooks 8 are welded with the tundish outer cover 6 to ensure the connection stability. The arrangement of the hooks 8 enables the lifting of the tundish outer cover 6 to be convenient, the movable functional effect of the tundish 12 can be realized only by connecting the lifting mechanism with the hooks 8, the labor force of manually carrying the tundish outer cover 6 is reduced, and the lifting efficiency can be improved. And when the temperature of a single tundish 12 is too high after the tundish 12 is used, the tundish 12 can be lifted to other positions with lower temperature for cooling, and the tundish 12 can be used again after the temperature is cooled. The movable operation of the tundish 12 facilitates the cooling of the tundish 12 and improves the cooling efficiency of the tundish 12. Specifically, in this implementation, couple 8's quantity is two, sets up respectively in the both sides at middle package dustcoat 6 top, guarantees to lift by crane the steadiness on the basis of not wasting couple 8.

Furthermore, in the embodiment, seat legs 7 are arranged at four corners of the bottom of the tundish cover 6, and the seat legs 7 are welded and fixed with the tundish cover 6. The seat legs 7 are arranged to reinforce the strength of the whole tundish outer cover 6, so that the tundish outer cover 6 can keep higher stability when the tundish 12 is poured, and the pouring process is ensured to be smoothly carried out; the setting of seat leg 7 is avoided middle package dustcoat 6 direct and ground contact, fixes subaerial through seat leg 7, and seat leg 7 plays the transition supporting role, has effectively avoided external environment to cause wearing and tearing to middle package dustcoat 6, has further improved middle package dustcoat 6's life.

The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.

Claims

1. The utility model provides a tundish heating device, includes liquefied gas jar (1), flame gun (5) be connected with liquefied gas jar (1), its characterized in that: the flame gun (5) be connected with middle package dustcoat (6) through advancing fire head (10), middle package dustcoat (6) inside is provided with middle package (12), the surface of middle package (12) is provided with ignition passageway (13), ignition passageway (13) are the heliciform and twine the surface of middle package (12), the one end and the fire head (10) intercommunication of advancing of ignition passageway (13), the bottom of middle package (12) is provided with honeycomb duct (9).

2. A tundish heating apparatus as claimed in claim 1, wherein: the two ends of the top of the tundish outer cover (6) are provided with arc sections, and the arc sections are bent towards the inside of the tundish outer cover (6).

3. A tundish heating apparatus according to claim 2, wherein: the surface of one side of the arc segment facing the tundish (12) is coated with refractory materials.

4. A tundish heating apparatus as claimed in claim 1, wherein: the liquefied gas tank (1) is communicated with the gas transmission hose (4) through the vent pipe (2), the gas transmission hose (4) is communicated with the flame gun (5), and the vent pipe (2) is provided with the regulating valve (3).

5. A tundish heating apparatus according to claim 4, wherein: the vent pipe (2) is connected with the gas hose (4) through a flange.

6. A tundish heating apparatus as claimed in claim 1, wherein: the inner wall of the liquefied gas tank (1) is provided with a heat insulation layer.

7. A tundish heating device according to claim 1 or 6, wherein: the tundish outer cover (6) is provided with a plurality of hooks (8).

8. A tundish heating apparatus according to claim 7, wherein: four corners of the bottom of the tundish outer cover (6) are provided with seat legs (7).