CN211903872U

CN211903872U - Heat exchanger for boiler auxiliary machine

Info

Publication number: CN211903872U
Application number: CN202020102134.5U
Authority: CN
Inventors: 李德民; 周大同; 吴安敏
Original assignee: Jiangsu Zhongke Heavy Industry Co ltd
Current assignee: Jiangsu Zhongke Heavy Industry Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-11-10
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a heat exchanger for boiler auxiliary engine, which comprises a housin, a plurality of vertical heat transfer tubulations of fixedly connected with in the casing, and by U-shaped return bend fixed connection, both sides between a plurality of heat transfer tubulations the upper end of heat transfer tubulation all extends to the upside of casing and fixedly connected with inlet tube and outlet pipe respectively, the outside equipartition of heat transfer tubulation is connected with a plurality of heat exchanger fins, and is connected by installation mechanism between heat exchanger fin and the heat transfer tubulation, fixedly connected with intake pipe on the casing lateral wall of heat transfer tubulation downside, and fixedly connected with outlet duct on the casing lateral wall of heat transfer tubulation upside, the upper end central authorities of casing are connected with sprays the mechanism. The utility model discloses a heat exchanger is convenient for the change of heat exchanger fin and is used, reduces the replacement cost after damaging to can wash the heat transfer tubulation in the casing, reduce the long-term accumulational condition of impurity in the boiler flue gas, improve heat exchange efficiency.

Description

Heat exchanger for boiler auxiliary machine

Technical Field

The utility model relates to a boiler heat exchanger technical field especially relates to a heat exchanger for boiler auxiliary engine.

Background

When the boiler for the iron and steel enterprises is used, a large amount of fuel is generally consumed, a large amount of smoke is generated, and the smoke exhaust temperature of the boiler for the iron and steel enterprises is high. The high-temperature flue gas is usually directly discharged to the atmosphere, so that huge waste of resources is caused, a plurality of technologies for recovering waste heat of the high-temperature flue gas are generated for saving energy at present, and in the prior art, a facility for recovering and utilizing the waste heat is a heat exchanger, so that the temperature of the flue gas can be reduced, and meanwhile, the high-temperature flue gas can be utilized to achieve the purpose of heat exchange.

At present, because the temperature of flue gas exhausted by a boiler for iron and steel enterprises fluctuates sharply and the dust content is large, a common water tube waste heat boiler is difficult to be applied to waste heat recovery of the boiler for the iron and steel enterprises. When using water tubulation exhaust-heat boiler, the heat transfer effect is better in earlier stage, along with the extension of live time, can accumulate more and more smoke and dust on the heat transfer tubulation wall, leads to heat exchange efficiency to descend, has reduced exhaust-heat system's economic value relatively, has increased exhaust-heat system's investment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving not enough among the prior art, provide a novel heat exchanger for boiler auxiliary engine, improve heat exchange efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a heat exchanger for boiler auxiliary engine, includes the casing, a plurality of vertical heat transfer tubulations of fixedly connected with in the casing, and by U-shaped return bend fixed connection, both sides between a plurality of heat transfer tubulations the upper end of heat transfer tubulation all extends to the upside of casing and fixedly connected with inlet tube and outlet pipe respectively, the outside equipartition of heat transfer tubulation is connected with a plurality of fins, and is connected by installation mechanism between fin and the heat transfer tubulation, fixedly connected with intake pipe on the casing lateral wall of heat transfer tubulation downside, and fixedly connected with outlet duct on the casing lateral wall of heat transfer tubulation upside, the upper end central connection of casing has the mechanism that sprays, and the lower extreme fixedly connected with of casing and the liquid outlet that the mechanism corresponds sprays.

Preferably, the mounting mechanism comprises mounting blocks fixedly connected to the upper end and the lower end of the heat exchange plate respectively, and the two mounting blocks opposite to the heat exchange plate are fixedly connected through a screw and a nut on the same horizontal line.

Preferably, the side wall of the heat exchange sheet is provided with an arc-shaped groove corresponding to the heat exchange tube array, and the inner wall of the arc-shaped groove is fixedly connected with a corrosion-resistant layer attached to the heat exchange tube array.

Preferably, the outer side wall of the shell is fixedly connected with an exhaust fan corresponding to the air outlet pipe, and the air outlet pipe is fixedly connected with the input end of the exhaust fan.

Preferably, the spraying mechanism includes the water tank of fixed connection in the casing upper end, fixedly connected with pump body in the water tank, and the vertical water pipe of the output fixedly connected with of the pump body, the lower extreme fixedly connected with of water pipe and the circular slab of intercommunication, the lower extreme equipartition of circular slab has a plurality of shower nozzles, and the shower nozzle correspondence sets up the upside at the heat transfer tubulation.

Preferably, the first filter screen of output fixedly connected with of shower nozzle, fixedly connected with diaphragm on the shells inner wall between heat transfer tube array and the intake pipe, the rectangle opening has been seted up to the upper end of diaphragm, and fixedly connected with second filter screen in the rectangle opening.

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

the utility model discloses an equipartition is connected with a plurality of heat exchanger fins on the lateral wall of heat transfer tubulation to be connected by installation mechanism between heat exchanger fin and the heat transfer tubulation, the change of the heat exchanger fin of being convenient for is used, reduces the replacement cost after damaging, helps the long-term use of equipment, and fixedly connected with and the corrosion-resistant layer of heat transfer tubulation laminating on the inner wall of heat exchanger fin, can improve the life of heat exchanger fin.

Simultaneously, through be provided with on the roof in the casing and spray the mechanism, when improving the heat transfer effect of heat exchanger, can wash the heat transfer tubulation in the casing, reduce the long-term accumulational condition of impurity in the boiler flue gas, improve heat exchange efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a heat exchanger for a boiler auxiliary machine according to the present invention;

fig. 2 is a side structure view of the installation mechanism of the heat exchanger for the auxiliary boiler provided by the utility model;

fig. 3 is a bottom view of the circular plate of the heat exchanger for the auxiliary boiler provided by the utility model.

In the figure: the heat exchange device comprises a shell 1, a heat exchange tube array 2, a U-shaped bent tube 3, a water outlet tube 4, heat exchange fins 5, an air inlet tube 6, an air outlet tube 7, a liquid outlet tube 8, a mounting block 9, a screw rod 10, a nut 11, a corrosion-resistant layer 12, an exhaust fan 13, a water tank 14, a circular plate 15, a spray head 16, a first filter screen 17, a transverse plate 18, a second filter screen 19 and a water inlet tube 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The heat exchanger for the auxiliary boiler machine, which is shown in fig. 1 to 3, includes a housing 1, a plurality of vertical heat exchange tubes 2 are fixedly connected in the housing 1, and the plurality of heat exchange tubes 2 are fixedly connected by U-shaped bent tubes 3.

The upper ends of the heat exchange tubes 2 at the two sides extend to the upper side of the shell 1 and are fixedly connected with a water inlet pipe 20 and a water outlet pipe 4 respectively.

A plurality of heat exchange fins 5 are uniformly distributed and connected on the outer side of the heat exchange tubes 2, and the heat exchange fins 5 are connected with the heat exchange tubes 2 through an installation mechanism. Specifically, the mounting mechanism comprises mounting blocks 9 fixedly connected to the upper and lower ends of the heat exchange fin 5 respectively. Preferably, the two opposite mounting blocks 9 of the heat exchange plates 5 are fixedly connected by the same horizontal screw rod 10 and nut 11.

More specifically, set up the arc recess that corresponds with heat transfer shell and tube 2 on the lateral wall of heat exchanger fin 5, and fixedly connected with on the inner wall of arc recess and the corrosion-resistant layer 12 of heat transfer shell and tube 2 laminating, ceramic material is chooseed for use to corrosion-resistant layer 12, improves the corrosion resistance of heat exchanger fin 5.

Wherein, fixedly connected with intake pipe 6 on the 1 lateral wall of casing of heat transfer tubulation 2 downside, and fixedly connected with outlet duct 7 on the 1 lateral wall of casing of heat transfer tubulation 2 upside, fixedly connected with air exhauster 13 that corresponds with outlet duct 7 on the lateral wall of casing 1, and the input fixed connection of outlet duct 7 and air exhauster 13 helps the heat transfer of the gas in the boiler to handle, and can accelerate gaseous flow.

Wherein, the upper end central authorities of casing 1 are connected with sprays the mechanism, and the lower extreme fixedly connected with of casing 1 with spray the liquid outlet 8 that the mechanism corresponds, the valve has been cup jointed in the outside of liquid outlet 8 is fixed, be convenient for discharge the water that sprays the mechanism and use.

The mechanism that sprays includes water tank 14 of fixed connection in casing 1 upper end, the fixedly connected with pump body (not marked in the figure) in the water tank 14, and the vertical water pipe of output fixedly connected with of the pump body, the lower extreme fixedly connected with of water pipe is rather than the circular slab 15 of intercommunication, the lower extreme equipartition of circular slab 15 has a plurality of shower nozzles 16, and shower nozzle 16 corresponds the upside that sets up at heat transfer tubulation 2, more specifically, the first filter screen 17 of output fixedly connected with of shower nozzle 16, fixedly connected with diaphragm 18 on the casing 1 inner wall between heat transfer tubulation 2 and the intake pipe 6, the rectangle opening has been seted up to the upper end of diaphragm 18, and fixedly connected with second filter screen 19 in the rectangle opening, under the use of mechanism that sprays, can further improve the heat transfer effect of heat exchanger, and can wash heat transfer tubulation 2 simultaneously, guarantee the inside clean and.

The utility model discloses an in-process that the heat exchanger was using is connected with a plurality of heat exchanger fins 5 through the equipartition on the lateral wall of heat transfer tubulation 2, and the change of the heat exchanger fin 5 of being convenient for is used, reduces the replacement cost after damaging, helps the long-term use of equipment.

Particularly, the corrosion-resistant layer 12 attached to the heat exchange tube array 2 is fixedly connected to the inner wall of the heat exchange plate 5, so that the service life of the heat exchange plate 5 is prolonged. Be provided with on the roof in casing 1 and spray the mechanism, when improving the heat transfer effect of heat exchanger, can wash heat transfer tubulation 2 in the casing 1, reduce the long-term accumulational condition of impurity in the boiler flue gas, improve heat exchange efficiency.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A heat exchanger for a boiler auxiliary machine is characterized by comprising a shell (1) and a plurality of vertical heat exchange tubes (2) fixedly connected in the shell (1), wherein the heat exchange tubes (2) are fixedly connected through U-shaped bent pipes (3);

the upper ends of the heat exchange tubes (2) on the two sides extend to the upper side of the shell (1) and are respectively and fixedly connected with a water inlet pipe (20) and a water outlet pipe (4), the outer sides of the heat exchange tubes (2) are uniformly connected with a plurality of heat exchange fins (5), and the heat exchange fins (5) are connected with the heat exchange tubes (2) through mounting blocks (9);

an arc-shaped groove corresponding to the heat exchange tube array (2) is formed in the side wall of the heat exchange sheet (5), and a corrosion-resistant layer (12) attached to the heat exchange tube array (2) is fixedly connected to the inner wall of the arc-shaped groove;

an air inlet pipe (6) is fixedly connected to the side wall of the shell (1) at the lower side of the heat exchange tube array (2), and an air outlet pipe (7) is fixedly connected to the side wall of the shell (1) at the upper side of the heat exchange tube array (2);

the upper end center of casing (1) is connected with sprays the mechanism, and the lower extreme fixedly connected with of casing (1) sprays liquid outlet (8) that the mechanism corresponds.

2. The heat exchanger for the auxiliary boiler machine according to claim 1, characterized in that the opposite mounting blocks (9) of the two heat exchange fins (5) are fixedly connected by a same horizontal screw (10) and a nut (11).

3. The heat exchanger for the auxiliary machine of the boiler as claimed in claim 1, characterized in that an exhaust fan (13) corresponding to the air outlet pipe (7) is fixedly connected to the outer side wall of the casing (1), and the air outlet pipe (7) is fixedly connected to the input end of the exhaust fan (13).

4. The heat exchanger for the auxiliary boiler machine according to claim 1, characterized in that the spraying mechanism comprises a water tank (14) fixedly connected to the upper end of the casing (1), a pump body is fixedly connected to the water tank (14), a vertical water pipe is fixedly connected to the output end of the pump body, a circular plate (15) communicated with the water pipe is fixedly connected to the lower end of the water pipe, and a plurality of spray heads (16) are uniformly distributed on the lower end of the circular plate (15).

5. The heat exchanger for the auxiliary boiler as recited in claim 4, characterized in that the spray head (16) is correspondingly arranged on the upper side of the heat exchange tube array (2).

6. The heat exchanger for the boiler auxiliary machine according to claim 5, characterized in that a first filter screen (17) is fixedly connected to an output end of the spray head (16), a transverse plate (18) is fixedly connected to an inner wall of the shell (1) between the heat exchange tube array (2) and the air inlet pipe (6), a rectangular opening is formed in an upper end of the transverse plate (18), and a second filter screen (19) is fixedly connected to the inside of the rectangular opening.