CN204786418U

CN204786418U - Be applied to I type two -stage heat exchanger of radiant tube nozzle

Info

Publication number: CN204786418U
Application number: CN201520505403.1U
Authority: CN
Inventors: 王建中
Original assignee: FOSHAN KEHAO COMBUSTION EQUIPMENT MANUFACTURING Co Ltd
Current assignee: FOSHAN KEHAO COMBUSTION EQUIPMENT MANUFACTURING Co Ltd
Priority date: 2015-07-13
Filing date: 2015-07-13
Publication date: 2015-11-18
Anticipated expiration: 2025-07-13

Abstract

The utility model discloses an I-type two-stage heat exchanger applied to a radiant tube burner, which comprises a main pipe, an air pipe and an inner pipe. The air pipe is composed of an independent and closed left air pipe and a right air pipe. The pipe and the right air pipe are connected through the inner pipe. The inner pipe extends from the left end of the left air pipe to the right end of the right air pipe. The inlet and the left end of the right air duct are connected with a hot air outlet. The utility model relates to a heat exchange device, in particular to an I-type two-stage heat exchanger which is mainly applied to a gas radiant tube burner of an industrial furnace. By using the I-type two-stage heat exchanger applied to the radiant tube burner provided by the utility model, the secondary heat exchange between the combustion air and the flue gas can be performed, the heat exchange efficiency can be improved, the production cost can be reduced, and energy can be saved.

Description

A kind of I type two-stage heat exchanger being applied to radiation pipe burner tip

Technical field

The utility model relates to a kind of heat-exchanger rig, is particularly mainly used in the I type two-stage heat exchanger on combustion gas (or fuel oil) radiation pipe burner tip of industrial furnace.

Background technology

At present, in metal heat treatmet etc., product quality is required that, in higher industry, the mode that existing burner mainly adopts radiation pipe burner tip to heat, which obtains promotion and application widely.The operation principle of radiation pipe burner tip heating: air feeds in air hose, burner place is entered after heat exchanger heating, burn after lighting a fire in the combustion gas mixing of burner end and infeed, high-temperature flue gas (combustion product) is at radiation Bottomhole pressure, in the process of flow of flue gas, the heat of high-temperature flue gas gives outside product by radiant tube transferring heat, and reach the object of heating products, then high-temperature flue gas is discharged from radiant tube exhaust opening after heat exchanger heats air.

Conventional heat exchanger is arranged on the position that radiant tube is positioned at furnace wall inside, and due to the restriction of furnace wall thickness, the heat exchange area of heat exchanger is limited, so flue gas still has higher temperature after leaving heat exchanger, the heat exchange efficiency of radiant tube burner heat exchanger is relatively low.Energy prices rise gradually now, and the proportion that energy cost accounts for is increasing, the more aobvious necessity of the Mist heat recovering that improves equipment.How to improve on the architecture basics of original heat exchanger, drain again after making most of heat can pass to combustion air, put on the research schedule of people.

Summary of the invention

Problem to be solved in the utility model is, for the deficiency of above-mentioned technology, design a kind of scientific and reasonable for structure, heat exchange efficiency is high, the I type two-stage heat exchanger being applied to radiation pipe burner tip of economize energy cost.

The technical scheme that the utility model adopts for its problem of solution is:

A kind of I type two-stage heat exchanger being applied to radiation pipe burner tip, comprise main pipeline, be positioned at the air duct of main pipeline inside, be positioned at the pipe of air duct inside, described air duct is made up of independent and closed left air duct and right air duct, described left air duct is communicated with by interior pipe with right air duct, described interior pipe is by the left end air duct right-hand member extension to the right of left air duct, described main pipeline left part and right part are connected to exhaust opening and enter mouth, described left air duct right-hand member is connected with air intake, described right air duct left end is connected with hot air outlet.

In the utility model, the right-hand member of described right air duct is provided with fin.

The beneficial effects of the utility model are: the utility model relates to a kind of heat-exchanger rig, are particularly mainly used in the I type two-stage heat exchanger on the gas fired radiant tubes burner of industrial furnace.Due on the basis of original heat exchanger, extend the hot switching path of flue gas and combustion air, so by using the I type two-stage heat exchanger being applied to radiation pipe burner tip provided by the utility model, combustion air and flue gas can be allowed to carry out sufficient secondary heat exchange, improve heat exchange efficiency, reduce production cost, economize energy.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in embodiment of the present utility model, below the accompanying drawing used required in describing embodiment is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present utility model, instead of whole embodiment, and those skilled in the art, under the prerequisite not paying creative work, can also obtain other designs and accompanying drawing according to these accompanying drawings.

Fig. 1 is the mounting structure schematic diagram of the present embodiment;

Fig. 2 is the present embodiment principle schematic one;

Fig. 3 is the present embodiment principle schematic two.

Detailed description of the invention

Clear, complete description is carried out, to understand the purpose of this utility model, characteristic sum effect fully below with reference to embodiment and the accompanying drawing technique effect to design of the present utility model, concrete structure and generation.Obviously; described embodiment is a part of embodiment of the present utility model, instead of whole embodiment, based on embodiment of the present utility model; other embodiments that those skilled in the art obtains under the prerequisite not paying creative work, all belong to the scope of the utility model protection.In addition, all connection/annexations mentioned in literary composition, not singly refer to that component directly connects, and refer to and according to concrete performance, can connect auxiliary by adding or reducing, and form more excellent draw bail.Each technical characteristic in the utility model, can combination of interactions under the prerequisite of not conflicting conflict.

With reference to Fig. 2 to Fig. 3, as shown in the figure, a kind of I type two-stage heat exchanger being applied to radiation pipe burner tip, comprise main pipeline 1, be positioned at the air duct of main pipeline 1 inside, be positioned at the pipe 2 of air duct inside, described air duct is made up of independent and closed left air duct 3 and right air duct 4, described left air duct 3 is communicated with by interior pipe 2 with right air duct 4, described interior pipe 2 is by the left end air duct 4 right-hand member extension to the right of left air duct 3, described main pipeline 1 left part and right part are connected to exhaust opening 5 and enter mouth 6, described left air duct 3 right-hand member is connected with air intake 7, described right air duct 4 left end is connected with hot air outlet 8.

With reference to Fig. 1, as shown in the figure, radiant tube 11 is installed in heat-treatment furnace 10, and heat-treatment furnace 10 is stretched out at described radiant tube 11 two ends, and is connected to burner 12 and enters mouth 6, and described burner 12 is communicated with I type two-stage heat exchanger by hot air outlet 8.

With reference to Fig. 2, as shown in the figure, the combustion air of the present embodiment flows to and is: the left air duct 3 first being entered I type two-stage heat exchanger by air intake 7, the high-temperature flue gas circulated in left air duct 3 and in main pipeline 1 carries out heat exchange, and combustion air temperature raises, pipe 2 in then being flowed into by left air duct 3 left end, then combustion air is circulated to interior pipe 2 right-hand member, enter right air duct 4, carry out heat exchange further, be circulated to right air duct 4 left end and enter in burner 12 through hot air outlet 8.

With reference to Fig. 3, as shown in the figure, the flue gas flow direction of the present embodiment is: first combustion gas is sprayed by burner 12 and enters radiant tube 11, burn in radiant tube 11, then the high-temperature flue gas produced that burns flows through fin 9 surface, enter I type two-stage heat exchanger from entering mouth 6 again, in main pipeline 1 be positioned at right air duct 4, pipe 2, left air duct 3 combustion air carry out heat exchange, finally discharge from exhaust opening 5.

In order to heat exchange is more abundant, the right-hand member of described right air duct 4 is provided with fin 9.

The description about position and direction relations mentioned in literary composition, under different viewing angles, can make all equivalent modifications or replacement, as upper and lower relation can replace with left-right relation.Above better embodiment of the present utility model is illustrated, but the utility model is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent modification or replacement are all included in the application's claim limited range.

Claims

1. A type I two-stage heat exchanger applied to a radiant tube burner, characterized in that it includes a main pipe (1), an air pipe inside the main pipe (1), an inner pipe (2) inside the air pipe ), the air duct is composed of independent and closed left air duct (3) and right air duct (4), and the left air duct (3) and right air duct (4) communicate through the inner pipe (2), so The inner pipe (2) extends from the left end of the left air pipe (3) to the right end of the right air pipe (4), and the left and right ends of the main pipe (1) are respectively connected with a smoke outlet (5) and a smoke inlet (6), the right end of the left air duct (3) is connected with an air inlet (7), and the left end of the right air duct (4) is connected with a hot air outlet (8).

2. The type I two-stage heat exchanger applied to radiant tube burners according to claim 1, characterized in that: the right end of the right air pipe (4) is provided with fins (9).