CN213977768U

CN213977768U - Vaporization cooling flue capable of strongly exchanging heat

Info

Publication number: CN213977768U
Application number: CN202022609980.9U
Authority: CN
Inventors: 邓伟
Original assignee: Wuxi Xianglong Global Technology Co ltd
Current assignee: Wuxi Xianglong Global Technology Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-08-17
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses a can imitate vaporization cooling flue of heat transfer by force, the inner wall of middle section flue is the water-cooling wall, and the water-cooling wall is heated the pipe by the round and is constituteed, and every is heated the pipe and all includes a outlying straight tube, and in the round straight tube, the inboard of a straight tube at every interval just is fixed with a return bend, and the return bend includes the intermediate tube, the intermediate tube is the short straight tube, and the upper and lower both ends of intermediate tube are respectively for going up the pipe chute and down the pipe chute, go up the pipe chute and down the end of pipe chute fixed with the inboard of straight tube respectively to fix return bend and straight tube, constitute a combination formula and receive the heat pipe. The vaporization cooling flue capable of strongly exchanging heat increases the convection heat exchange area of the heated pipe on the premise of ensuring the normal heat exchange of the heated pipe, so that the whole heat exchange area of the heated pipe is increased by about 70 percent, the plant space occupied by equipment is not increased, the heat exchange area can be effectively increased, the effects of increasing the steam yield and reducing the dust removal water consumption are achieved, and the problem of the over-temperature work of a water-cooled wall is solved.

Description

Vaporization cooling flue capable of strongly exchanging heat

Technical Field

The utility model relates to a heat transfer correlation technique field specifically is the vaporization cooling flue that can imitate the heat transfer by force.

Background

Steam generated by converter steelmakingThe energy yield is more than 30 percent, so the improvement of the steam yield is an important way for realizing negative energy steelmaking. The converter discharges 1900-2100 ℃ high-temperature flue gas with dust content of about 150g/Nm³In order to recover converter gas and avoid the direct emission of flue gas to affect the environment, the flue type structure vaporization cooling technology is adopted at home and abroad, which is a special form of industrial waste heat boiler.

The vaporization cooling flue is key equipment for recovering high-temperature flue gas in the smelting process of the converter and absorbing the heat of the flue gas to generate steam, and plays important roles in efficiently recovering heat energy in the flue gas, reducing energy consumption and production cost of steel per ton, ensuring safe production of the converter, effectively protecting the environment and the like. The evaporation cooling flue can not only achieve the purpose of cooling flue gas, but also produce steam and recover a large amount of heat energy for production and living of factories, thereby reducing the steel-making cost, and also has the advantages of water saving, electricity saving and low cost.

However, the existing evaporation cooling flue has the following disadvantages:

when the high-temperature flue gas is discharged, the waste heat recovery utilization rate is low, so that most heat energy with high loss cannot be fully utilized, loss and waste are caused, a forked pipe exists in a rising pipeline of the water-cooled wall, water flow in the pipeline is not uniformly distributed, so that the water-cooled wall is over-temperature to work, the heat exchange area of a heated pipe is limited, the steam yield is low, and the dust removal water consumption is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an increase heated tube heat transfer area, increase steam output, reduce the effect of dust removal water consumption, can solve the vaporization cooling flue that can imitate the heat transfer by force of water-cooling wall overtemperature work problem.

In order to solve the technical problem, the utility model provides a following technical scheme:

the evaporative cooling flue capable of strongly exchanging heat comprises a movable smoke hood, wherein a fixed section flue is arranged at the other end of the movable smoke hood, a movable section flue is arranged at the other end of the fixed section flue, a middle section flue is arranged at the other end of the movable section flue, a first inclined section flue is fixedly arranged at the other end of the middle section flue, a second inclined section flue is fixedly arranged at the other end of the first inclined section flue, and a tail section flue is fixedly arranged at the other end of the second inclined section flue;

the inner wall of the middle section flue is a water-cooled wall, the water-cooled wall is composed of a circle of heated tubes, each heated tube comprises a peripheral straight tube, a bent tube is fixed on the inner side of every other straight tube in the circle of straight tubes, each bent tube comprises a middle tube, the middle tube is a short straight tube, the upper end and the lower end of each middle tube are respectively an upper inclined tube and a lower inclined tube, the tail ends of the upper inclined tube and the lower inclined tube are respectively fixed with the inner sides of the straight tubes, so that the bent tubes and the straight tubes are fixed to form a combined heated tube, and the combined heated tubes are arranged at intervals.

Preferably, the bottom of the middle section flue is provided with an access hole.

Preferably, an explosion-proof manhole is arranged on the tail section flue.

Preferably, the inner wall of the fixed section flue is sprayed with an alloy layer.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

the vaporization cooling flue capable of strongly exchanging heat improves the heated tubes of the water wall, and each separated heated tube is provided with one combined heated tube, so that on the premise of ensuring normal heat exchange of the heated tubes, the convection heat exchange area of the heated tubes is increased, the whole heat exchange area of the heated tubes is increased by about 70%, the plant space occupied by equipment is not increased, the heat exchange area can be effectively increased, the effects of increasing steam yield and reducing dust removal water consumption are achieved, and the problem of over-temperature work of the water wall is solved.

Drawings

Fig. 1 is a schematic structural diagram of the vaporization cooling flue capable of strong heat exchange.

FIG. 2 is a cross-sectional elevation view of the inner water wall of the midstream flue of FIG. 1.

FIG. 3 is a cross-sectional top view of the waterwalls inside the midstream flue of FIG. 1.

In the figure: the device comprises a movable smoke hood 1, a fixed section flue 2, a movable section flue 3, a middle section flue 4, a first inclined section flue 5, a second inclined section flue 6, a tail section flue 7, a water-cooled wall 8, a heated pipe 9, a straight pipe 10, a bent pipe 11, a middle pipe 11.1, an upper inclined pipe 11.2 and a lower inclined pipe 11.3.

Detailed Description

Referring to fig. 1 to 3, the utility model relates to a can imitate vaporization cooling flue of heat transfer by force, it includes activity petticoat pipe 1, canned paragraph flue 2 is installed to the other end of activity petticoat pipe 1, canned paragraph flue 3 is installed to the other end of canned paragraph flue 2, middle section flue 4 is installed to the other end of canned paragraph flue 3, the other end fixed mounting of middle section flue 4 has first oblique section flue 5, the other end fixed mounting of first oblique section flue 5 has second oblique section flue 6, the other end fixed mounting of second oblique section flue 6 has end section flue 7.

Wherein the inner wall of the middle section flue 4 is a water wall 8, the water wall 8 is composed of a circle of heated tubes 9, each heated tube 9 comprises a peripheral straight tube 10, in the circle of straight tubes 10, a bent tube 11 is fixed at the inner side of every other straight tube 10, the bent tube 11 comprises a middle tube 11.1, the middle tube 11.1 is a shorter straight tube, the upper end and the lower end of the middle tube 11.1 are respectively an upper inclined tube 11.2 and a lower inclined tube 11.3, the tail ends of the upper inclined tube 11.2 and the lower inclined tube 11.3 are respectively fixed with the inner side of the straight tube 10, so that the bent tube 11 and the straight tube 10 are fixed to form a combined heated tube, the combined heated tubes are arranged at intervals, thus on the premise of ensuring the normal heat exchange of the heated tubes, the convection heat exchange area of the heated tubes 9 is increased, the whole heat exchange area of the heated tubes 9 is increased by about 70%, the plant space occupied by the equipment is not increased, but the heat exchange area is effectively increased, thereby achieving the effects of increasing the steam yield and reducing the dust removal water consumption and also solving the problem of the over-temperature work of the water-cooled wall.

And the bottom of the middle section flue 4 can be provided with an access hole, and an operator can conveniently maintain the converter vaporization cooling flue through the access hole.

An explosion-proof manhole can be arranged on the tail section flue 7.

The inner wall of the fixed section flue 2 can be sprayed with an alloy layer, and the alloy layer can play a role in reinforcement and wear resistance.

Claims

1. The vaporization cooling flue capable of strongly exchanging heat is characterized in that: the smoke exhaust device comprises a movable smoke hood (1), wherein a fixed section flue (2) is installed at the other end of the movable smoke hood (1), a movable section flue (3) is installed at the other end of the fixed section flue (2), a middle section flue (4) is installed at the other end of the movable section flue (3), a first inclined section flue (5) is fixedly installed at the other end of the middle section flue (4), a second inclined section flue (6) is fixedly installed at the other end of the first inclined section flue (5), and a tail section flue (7) is fixedly installed at the other end of the second inclined section flue (6);

the inner wall of the middle section flue (4) is a water-cooled wall (8), the water-cooled wall (8) is composed of a circle of heated tubes (9), each heated tube (9) comprises a peripheral straight tube (10), a bent tube (11) is fixed on the inner side of every other straight tube (10) in the circle of straight tubes (10), each bent tube (11) comprises a middle tube (11.1), the middle tube (11.1) is a short straight tube, the upper end and the lower end of the middle tube (11.1) are respectively an upper inclined tube (11.2) and a lower inclined tube (11.3), the tail ends of the upper inclined tube (11.2) and the lower inclined tube (11.3) are respectively fixed with the inner side of the straight tube (10), and therefore the bent tube (11) and the straight tube (10) are fixed to form a combined heated tube, and the combined heated tubes are arranged at intervals.

2. The evaporative cooling flue capable of realizing efficient heat exchange according to claim 1, wherein: the bottom of the middle section flue (4) is provided with an access hole.

3. The evaporative cooling flue capable of realizing efficient heat exchange according to claim 1, wherein: and an explosion-proof manhole is arranged on the tail section flue (7).

4. The evaporative cooling flue capable of realizing efficient heat exchange according to claim 1, wherein: an alloy layer is sprayed on the inner wall of the fixed section flue (2).