CN209806109U

CN209806109U - Radiant tube cooling device

Info

Publication number: CN209806109U
Application number: CN201920054007.XU
Authority: CN
Inventors: 范宜然
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-14
Filing date: 2019-01-14
Publication date: 2019-12-17
Anticipated expiration: 2029-01-14

Abstract

The utility model discloses a radiant tube cooling device, which comprises a sleeve; the heating structure is arranged in the sleeve; a fixed structure for positioning the heating structure; and the cooling part is used for introducing gas into the sleeve, and then the gas introduced into the sleeve carries the heat in the sleeve to be discharged out of the sleeve. The utility model realizes the rapid cooling of the heating structure by arranging the cooling part, effectively protects the heating structure and prolongs the service life of the heating structure; and need not to go on the trompil to furnace body 1, reduce the quantity of hole on the furnace body, reduce the heat in the furnace body and leak, improve the heat utilization efficiency of furnace body.

Description

Radiant tube cooling device

Technical Field

The utility model belongs to the technical field of combustion apparatus, especially, relate to a radiant tube cooling device.

Background

The radiant tube is a common heating device, and is generally heated by adopting electric energy or high-quality gas when in use, so that the radiant tube is widely applied to industries such as metallurgy, medicine, food and the like; the existing electric radiant tube is installed in a furnace body, generates heat in a sleeve under the condition of electrifying, and then transfers the heat out through the outer wall of the sleeve to heat the furnace body.

After the existing furnace body is heated, the interior of the furnace body is required to be cooled, the existing cooling mode is that a pipeline for supplying air to flow is assembled in the furnace body, heat in the furnace body is transferred to the air in the pipeline to heat the air, the heated air can continuously move to the outside of the furnace body along the pipeline, and therefore the cooling effect on the interior of the furnace body and the interior of a radiation pipe is achieved, but because the air circularly flows in the pipeline, when the pipeline is assembled, a hole needs to be formed in the furnace body to enable the pipeline for conveying the air to be assembled in the furnace body, when the furnace body works, the heat in the furnace body overflows to the outside of the furnace body through the hole, the heating efficiency of the furnace body can be reduced, and the energy consumption is increased under the same heating effect; and because the air absorbs the heat in the furnace body, the heat absorption rate of the air on the electric heating wire in the radiant tube is slow, so that the cooling rate of the electric heating wire is slow, and the electric heating wire is in a high-temperature state for a long time, so that the service life of the electric heating wire is short.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art not enough, provide a radiant tube cooling device who improves heat utilization efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a radiant tube cooling device comprises

A sleeve;

The heating structure is arranged in the sleeve;

A fixing structure for fixing the heating structure;

And the cooling component is used for introducing a medium for cooling into the sleeve and then discharging the medium introduced into the sleeve to the outside of the sleeve with the heat of the sleeve.

the utility model is provided with the cooling part, the medium (such as gas) for cooling is directly introduced into the sleeve, and the medium can be rapidly contacted with the heating structure, so that the medium entering the sleeve is rapidly heated and then discharged out of the sleeve; the process realizes rapid cooling of the heating structure, so that after the temperature of the heating structure is reduced, the accelerated aging of the heating structure in a high-temperature state for a long time is avoided, the heating structure is protected, and the service life of the heating structure is prolonged; in addition, because the medium for cooling directly enters the sleeve, when the radiant tube is installed, the first pipeline and the second pipeline are installed at the same time, so compared with the traditional pipeline for punching holes on the furnace body to feed cold air, the cooling effect is good, the holes do not need to be punched on the furnace body, and the furnace body is easy to process; but also can reduce the heat leakage in the furnace body and improve the heat utilization rate of the furnace body.

Preferably, the cooling part comprises a first pipe body used for feeding the medium into the sleeve and a second pipe body used for discharging the medium in the sleeve to the outside of the sleeve; through the arrangement of the first pipe body and the second pipe body, when the heating structure in the sleeve is cooled, air flowing in from the first pipe body can directly impact the internal heating structure, so that energy exchange can be rapidly carried out with the internal heating structure; and because set up behind the second body, its heat can the diameter outwards discharge via the second body to the realization is cooled down to the sheathed tube inside, and this cooling mode is cooled down from the heat source, and its cooling is effectual, avoids the heat on the heat source to last again to provide the heat to the furnace body is inside.

preferably, the pipe diameter of the first pipe body is smaller than that of the second pipe body; through being less than second body pipe diameter with the pipe diameter setting of first body, it is when sending into the cover intraductal with gas, it is fast to send into gaseous velocity of flow, consequently gaseous strong to the impact of heating structure, consequently fast with heating structure contact velocity, it can take away the heat on the heating structure fast, thereby realize rapid heat transfer, and the pipe diameter of second body is big, then can be in the gas outgoing who accomplishes the heat transfer, speed slows down, it can avoid gaseous high-speed discharge and strike staff or other equipment, improve whole furnace body stability and security in the cooling period.

Preferably, the heating structure further comprises an electric conductor for supplying power to the heating structure, and the electric conductor is at least partially arranged outside the sleeve; the heating structure can be conveniently electrified by arranging the electric conductor, so that the heating structure generates heat in the sleeve, and further the radiation tube generates heat.

preferably, the sleeve is detachably connected with a flange body used for fixing the first pipe body and the second pipe body; the flange body can be used for plugging the lower part of the sleeve on one hand, heat loss from the lower part is reduced, the heat utilization rate is improved, the flange body can also be used for fixing the feeding pipe body and the second pipe body, the feeding pipe body and the second pipe body cannot deviate when gas is fed into the sleeve, and the stability of the feeding pipe body and the second pipe body in the working period is improved.

Preferably, the heat-insulating layer is arranged in the sleeve; the lower heating wire of the radiant tube can be insulated by the heat-insulating layer, heat loss is reduced, and heat is guaranteed to be dissipated in a centralized mode, so that the radiant tube is good in heating effect in the furnace body, and the heat utilization rate is high.

Preferably, the heating structure comprises a first heating body arranged at one end of the sleeve and a second heating body connected with the first heating body, and the conductor is connected with the second heating body.

Preferably, the fixing structure comprises a first fixing piece for fixing the first heating body and a second fixing piece for fixing the second heating body, and the first fixing piece and the second fixing piece are both arranged in the sleeve; the heating structure can be fixed by arranging the first fixing piece and the second fixing piece, so that the spacing between the first heating bodies is constant, and the spacing between the first heating bodies and the sleeve is constant, so that the heat transmitted to the sleeve by the first heating bodies is kept constant, the heat emitted from the sleeve is uniform, and the interior of the furnace body is uniformly heated; and set up the second mounting and leave, improved the fixed effect of first mounting to first heating member.

Preferably, the first fixing piece is a corundum flange; the first fixing piece is designed to be the corundum flange, so that the corundum flange is good in heat resistance, cannot deform at high temperature, and can guarantee the effect of the whole fixing process.

In summary, the utility model realizes the rapid cooling of the heating structure by arranging the cooling component, effectively protects the heating structure and prolongs the service life of the heating structure; and need not to go on the trompil on the furnace body, reduce the quantity of hole on the furnace body, reduce the heat in the furnace body and leak, improve the heat utilization ratio of furnace body.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the technical field personnel understand the utility model discloses the scheme, will combine the drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model carries out clear, complete description.

As shown in fig. 1-2, a radiant tube cooling device comprises a sleeve 1, a heating structure 2, a fixing structure and a cooling part 4, wherein the sleeve 1 is a metal tube with a closed upper end and an open lower end; the heating structure 2 comprises a first heating body 21 and a second heating body 22, the first heating body 21 is a bent resistance wire, the second heating body 22 is a straight resistance wire, the first heating body 21 is connected with the second heating body 22, meanwhile, the heating structure 2 is arranged in the sleeve 1, two electric conductors 5 are arranged on the sleeve 1, the electric conductors 5 can be copper columns, and one end of each electric conductor 5 extends out of the sleeve 1 and the other end is connected with the second heating body 22; and one of the two conductors 5 is connected with a live wire and the other is connected with a zero wire.

Further, the fixing structure is used for positioning and fixing the heating structure 3, and specifically, the fixing structure comprises a plurality of first fixing members 31 and second fixing members 32, the first fixing member 31 is a corundum flange, a plurality of holes are formed in the first fixing member 32, the first heating body 21 passes through the holes, and the edge of the first fixing member 31 is in contact with the inner wall of the sleeve 1, so that the first fixing member 31 fixes the first heating body 21; the second fixing member 32 is a wire-laying fireproof sheet, the second fixing member 32 also has three through holes, and the second fixing member 32 is used for fixing the second heating body 32.

Specifically, the cooling member 4 is used to introduce a medium (the medium is a gas) into the jacket; and the heat in the casing 1 is discharged from the inside of the casing 1 to the outside of the casing 1; the cooling part 4 comprises a first pipe body 41 used for feeding gas into the sleeve 1 and a second pipe body 42 used for discharging the gas in the sleeve 1 to the outside of the sleeve 1, wherein the first pipe body 41 partially penetrates into the sleeve 1, and the other part is positioned outside the sleeve 1; the gas is blown through the first tube 41 directly onto the heating structure; the second pipe 42 is also a metal pipe, and the pipe diameter of the second pipe 42 is larger than that of the first pipe, and the gas injected from the first pipe 41 is exhausted out of the sleeve through the second pipe 42 while the first and second pipes pass through the second fixing member 32, thereby being fixed on the second fixing member 32; meanwhile, a supporting framework is also arranged in the sleeve 1, and the supporting framework is a fire-resistant sheet.

In order to better fix the first tube 41, the second tube 42 and the conductor 5, a flange body 11 is connected to one end of the sleeve 1 through a screw, the flange body 11 is a metal flange, the conductor 5, the first tube 41 and the second tube 42 all penetrate out of the flange body 11, a sealing element 110 is arranged on the flange body 11, the sealing element 110 is a rubber ring, and the sealing element 110 is sleeved on the first tube and the second tube; the sleeve 1 is wrapped with an insulating layer 12, and the insulating layer 12 can be made of heat-resistant insulating materials, such as ceramic fiber blankets, or made of other materials; and a layer of ceramic fiber blanket is arranged outside the sleeve 1 for heat preservation.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Claims

1. a radiant tube cooling device characterized in that: comprises that

A sleeve (1);

The heating structure is arranged in the sleeve (1);

A fixing structure for fixing the heating structure;

And the cooling component (4) is used for introducing a medium for cooling into the sleeve (1) and then discharging the medium introduced into the sleeve (1) to the outside of the sleeve (1) with the heat in the sleeve (1).

2. A radiant tube cooling arrangement as claimed in claim 1, wherein: the cooling part (4) comprises a first pipe body (41) used for feeding the medium into the sleeve (1) and a second pipe body (42) used for discharging the medium in the sleeve (1) to the outside of the sleeve (1).

3. A radiant tube cooling arrangement as claimed in claim 2, wherein: the pipe diameter of the first pipe body (41) is smaller than that of the second pipe body (42).

4. A radiant tube cooling device as claimed in claim 1, wherein: the heating structure also comprises an electric conductor (5) used for supplying power to the heating structure, and the electric conductor (5) is at least partially arranged outside the sleeve (1).

5. A radiant tube cooling arrangement as claimed in claim 2, wherein: the sleeve (1) is detachably connected with a flange body (11) used for fixing the first pipe body (41) and the second pipe body (42).

6. A radiant tube cooling arrangement as claimed in claim 1, wherein: the heat-insulating sleeve also comprises a heat-insulating layer (12) arranged in the sleeve (1).

7. A radiant tube cooling arrangement as claimed in claim 4, wherein: the heating structure comprises a first heating body (21) arranged at one end of the sleeve (1) and a second heating body (22) connected with the first heating body (21), and the conductor (5) is connected with the second heating body (22).

8. A radiant tube cooling arrangement as claimed in claim 7, wherein: the fixing structure comprises a first fixing piece (31) used for fixing the first heating body (21) and a second fixing piece (32) used for fixing the second heating body (22), and the first fixing piece and the second fixing piece are both arranged in the sleeve (1).

9. a radiant tube cooling arrangement as claimed in claim 1, wherein: the first fixing piece (31) is a corundum flange.