CN210891749U

CN210891749U - Heat exchanger

Info

Publication number: CN210891749U
Application number: CN201921802666.3U
Authority: CN
Inventors: 娄如军
Original assignee: Zhejiang Xinzhonggang Clean Energy Co ltd
Current assignee: Zhejiang xinzhonggang Thermal Power Co.,Ltd.
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-06-30
Anticipated expiration: 2029-10-24

Abstract

The utility model relates to the technical field of waste heat utilization equipment, in particular to a heat exchange device, which comprises a box body, wherein one end of the box body is connected with an air inlet pipe, and the other end of the box body is connected with an air conveying pipe of a boiler; the side wall of the box body is connected with a connecting pipe connected with a steam turbine; a heat exchange mechanism is arranged in the box body. The utility model discloses have and to improve the air temperature in getting into the boiler, improve the combustion efficiency's of coal effect.

Description

Heat exchanger

Technical Field

The utility model belongs to the technical field of waste heat utilization equipment's technique and specifically relates to a heat transfer device is related to.

Background

In order to sufficiently burn coal, a conventional boiler is configured such that a blower is placed near the boiler and air is blown into the boiler.

The above prior art solutions have the following drawbacks: however, when the temperature of the air entering the boiler is relatively low, the temperature in the boiler is reduced, which is unfavorable for the combustion of the coal in the boiler, and thus the efficiency of the coal combustion is low.

SUMMERY OF THE UTILITY MODEL

To the deficiencies of the prior art, an object of the utility model is to provide a heat exchanger capable of improving the temperature of air entering a boiler.

The above object of the present invention is achieved by the following technical solutions:

a heat exchange device comprises a box body, wherein one end of the box body is connected with an air inlet pipe, and the other end of the box body is connected with an air conveying pipe of a boiler; the side wall of the box body is connected with a connecting pipe connected with a steam turbine; a heat exchange mechanism is arranged in the box body.

By adopting the technical scheme, the residual hot steam after the high-pressure steam in the power plant passes through the steam turbine and does work enters the box body heat exchange mechanism through the connecting pipe; the outside air enters the box body through the air inlet pipe, the heat exchange mechanism can increase the temperature of the air entering the box body, and then the air with the increased temperature enters the boiler through the air conveying pipe, so that the combustion efficiency of the coal in the boiler is improved; the heat exchange mechanism arranged in the box body can improve the temperature of air entering the boiler, so that the combustion efficiency of coal is improved; the tendency of condensation on the boiler wall is reduced; the carbon emission is reduced, and the service life of the boiler is prolonged; and simultaneously, the use efficiency of the hot steam can be improved.

The utility model discloses further set up to: the heat exchange mechanism comprises a first connecting block which is arranged at the upper end of the box body and connected with the connecting pipe, and a first cavity is formed in the first connecting block; a plurality of first heating pipes are arranged on the first connecting block and are uniformly distributed along the length direction of the first connecting block; the lower end of the box body is provided with a second connecting block connected with the first heating pipe, a second cavity is formed in the second connecting block, and a drain pipe extending out of the box body is arranged on the second connecting block.

By adopting the technical scheme, hot steam enters the first cavity of the first connecting block of the box body through the connecting pipe and then enters the first heating pipe, the temperature of air entering the box body is raised by the hot steam in the first heating pipe through transmission, and then the air with the raised temperature enters the boiler through the air conveying pipe, so that the combustion efficiency of coal in the boiler is improved; when the hot steam is in heat transfer, the hot steam can be cooled and condensed into water in the first heating pipe, and the water flows into the second cavity of the second connecting block and is finally discharged through the drain pipe.

The utility model discloses further set up to: the first connecting block is provided with a plurality of second heating pipes, the second heating pipes and the first heating pipes are respectively positioned at two ends of the first connecting block in the width direction, the first heating pipes and the second heating pipes are arranged at intervals, and the second heating pipes are positioned between two adjacent first heating pipes.

Through adopting above-mentioned technical scheme, the second heating pipe that sets up can be heating the air that heats through first heating pipe.

The utility model discloses further set up to: and the first heating pipe and the second heating pipe are provided with radiating fins.

Through adopting above-mentioned technical scheme, the fin of setting can improve the radiating effect of first heating pipe and second heating pipe, makes the air that is located the box that first heating pipe and second heating pipe can be better heat.

The utility model discloses further set up to: the heat exchange mechanism is arranged on a serpentine pipeline in the box body, one end of the serpentine pipeline is connected with the connecting pipe, and the other end of the serpentine pipeline penetrates out of the box body.

By adopting the technical scheme, the outside air enters the box body through the air inlet pipe, and the temperature of the air entering the box body is increased by the coiled pipeline; the heat exchange mechanism structure is arranged.

The utility model discloses further set up to: the connecting pipe is sleeved with a heat preservation layer, the heat preservation layer is provided with a fixing mechanism, the fixing mechanism comprises a connecting belt, one end of the connecting belt is provided with a buckle, and the other end of the connecting belt is provided with a clamping block clamped with the buckle.

By adopting the technical scheme, after the heat-insulating layer is coated on the connecting pipe, the connecting belt is firstly wound on the heat-insulating layer, and then the clamping block on the connecting belt is clamped with the buckle; the arranged fixing mechanism improves the stability of the heat-insulating layer on the connecting pipe; the heat preservation that sets up keeps warm to the hot steam that enters into in the box through the connecting pipe, reduces thermal loss.

The utility model discloses further set up to: the clamping block comprises a fixed block arranged on the connecting belt, a placing groove is formed in the fixed block, and a clamping plate is connected in the placing groove in a sliding mode; a spring is arranged in the placing groove, one end of the spring is connected to the bottom wall of the placing groove, and the other end of the spring is connected to the clamping plate; the buckle is including setting up regulating block on the connecting band, set up on the regulating block with the recess that the fixed block slided and is connected, set up on the lateral wall of regulating block with the draw-in groove of recess intercommunication, the draw-in groove with the cardboard joint.

By adopting the technical scheme, when the clamping block and the buckle need to be clamped, an operator firstly presses the clamping plate towards the bottom wall of the placing groove to enable the clamping plate to enter the placing groove, the spring can be compressed, then the fixing block is slid into the groove of the adjusting block, when the fixing block is abutted against the bottom wall of the groove, the spring can recover elastic deformation under the action of the elastic force of the spring, and the clamping block can pop out in the placing groove to be clamped with the clamping groove; the clamping block and the clamping buckle are simple in structure and convenient to operate.

To sum up, the utility model discloses a beneficial technological effect does:

1. the adjusting pipe arranged in the box body can improve the temperature of air entering the boiler, so that the combustion efficiency of coal is improved; the tendency of condensation on the boiler wall is reduced; the carbon emission is reduced, and the service life of the boiler is prolonged; meanwhile, the use efficiency of the hot steam can be improved;

2. the arranged radiating fins can improve the radiating effect of the first heating pipe and the second heating pipe, so that the first heating pipe and the second heating pipe can better heat air in the box body;

3. the heat preservation that sets up keeps warm to the hot steam that enters into in the box through the connecting pipe, reduces thermal loss.

Drawings

FIG. 1 is a schematic view of the structure of a heat exchange apparatus in example 1;

FIG. 2 is a schematic structural view of a heat exchange mechanism in embodiment 1;

FIG. 3 is a sectional view of the clip of embodiment 1;

fig. 4 is a sectional view of the case in embodiment 2.

Reference numerals: 1. a box body; 11. an air inlet pipe; 2. a heat exchange mechanism; 21. a first connection block; 22. a second connecting block; 23. a first heating pipe; 24. a second heating pipe; 25. a drain pipe; 26. a heat sink; 3. a heat-insulating layer; 4. a fixing mechanism; 5. a clamping block; 51. a fixed block; 511. a placement groove; 52. clamping a plate; 53. a spring; 6. buckling; 61. an adjusting block; 62. a groove; 63. a card slot; 7. a connecting belt; 91. a wind delivery pipe; 92. a steam turbine; 93. a boiler.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Example 1: referring to fig. 1, a heat exchanger according to the present invention comprises a box 1, wherein one end of the box 1 is connected to an air inlet pipe 11, and the other end is connected to an air duct 91 of a boiler 93; a connecting pipe connected with a steam turbine 92 is arranged on the side wall of one side of the box body 1, a heat-insulating layer 3 is coated on the outer side wall of the connecting pipe, and the heat-insulating layer 3 is supported by rock wool; the heat-insulating layer 3 is provided with a fixing mechanism 4.

Referring to fig. 1 and 2, a heat exchange mechanism 2 (not shown in the figures) is arranged in the box body 1, the heat exchange mechanism 2 includes a first connecting block 21 fixedly connected to the upper end of the box body 1, and a first cavity is formed on the first connecting block 21; one end of the first connecting block 21 in the width direction is connected with a plurality of first heating pipes 23 communicated with the first cavity, and the plurality of first heating pipes 23 are uniformly distributed in the length direction of the first connecting block 21; the other end of the first connecting block 21 in the width direction is connected with a plurality of second heating pipes 24 communicated with the first cavity, the plurality of second heating pipes 24 are uniformly distributed in the length direction of the first connecting block 21, the second heating pipes 24 and the first heating pipes 23 are distributed at intervals, and the second heating pipes 24 are positioned between two adjacent first heating pipes 23; a plurality of radiating fins 26 are fixedly connected to the peripheral side walls of the first heating pipe 23 and the second heating pipe 24; the lower end of the box body 1 is fixedly connected with a second connecting block 22, a second cavity is formed in the second connecting block 22, and one end, far away from the first connecting block 21, of the first heating pipe 23 and one end, far away from the first connecting block 21, of the second heating pipe 24 are both connected to the second connecting block 22 and are both communicated with the second cavity; a drain pipe 25 communicated with the second cavity is fixedly connected to the second connecting block 22, and one end, far away from the second connecting block 22, of the drain pipe 25 extends out of the box body 1.

Referring to fig. 2 and 3, the fixing mechanism 4 includes a connecting band 7, the connecting band 7 surrounds the heat preservation layer 3, a fixture block 5 is arranged at one end of the connecting band 7, the fixture block 5 includes a fixing block 51 fixedly connected with the connecting band 7, placing grooves 511 are respectively arranged on the side walls of both sides of the fixing block 51, and a clamping plate 52 is slidably connected in the placing grooves 511; a spring 53 is arranged in the placing groove 511, one end of the spring 53 is connected to the bottom wall of the placing groove 511, and the other end is connected to the clamping plate 52; the other end of the connecting belt 7 is provided with a buckle 6, the buckle 6 comprises an adjusting block 61 fixedly connected with the connecting belt 7, and one end of the adjusting block 61, which is far away from the connecting belt 7, is provided with a groove 62 connected with the fixed block 51 in a sliding manner; the side walls of the two sides of the adjusting block 61 are provided with clamping grooves 63 communicated with the grooves 62, and the clamping grooves 63 are clamped with the clamping plates 52.

The implementation principle of the embodiment is as follows: make heat preservation 3 wrap up the connecting pipe earlier, then operating personnel will be around on heat preservation 3 with connecting band 7 earlier, press cardboard 52 towards the direction of standing groove 511 diapire after that, make cardboard 52 enter into standing groove 511 in, spring 53 can be compressed, then slide fixed block 51 and enter into in the recess 62 of regulating block 61, when fixed block 51 contradicts the diapire of recess 62, spring 53 can resume elastic deformation under the effect of spring 53 elasticity, fixture block 5 can pop out in standing groove 511 and draw-in groove 63 joint.

The outside air enters the box body 1 through the air inlet pipe 11; hot steam of the steam turbine 92 enters the first connecting block 21 in the box body 1 through the connecting pipe and then enters the first cavity, the hot steam enters the first heating pipe 23 and the second heating pipe 24, and then air entering the box body 1 is heated; the hot steam is condensed into water in the first and

second heating pipes

23 and 24, enters the second cavity of the second connection block 22, and is finally discharged through the drain pipe 25.

Example 2: referring to fig. 4, the difference from embodiment 1 is that the heat exchange mechanism 2 is a serpentine pipe disposed in the box 1, one end of the serpentine pipe is connected to the connection pipe, and the other end of the serpentine pipe penetrates through the box 1.

The outside air enters the box body 1 through the air inlet pipe 11; the hot steam of the steam turbine 92 enters the serpentine pipeline in the box body 1 through the connecting pipe, and then the serpentine pipeline and the air entering the box body 1 are subjected to heat transfer, so that the temperature of the air entering the box body 1 rises, and then the air enters the boiler 93 through the air conveying pipe 91.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A heat exchange device is characterized by comprising a box body (1), wherein one end of the box body (1) is connected with an air inlet pipe (11), and the other end of the box body is connected with an air conveying pipe (91) of a boiler (93); the side wall of the box body (1) is connected with a connecting pipe connected with a steam turbine (92); a heat exchange mechanism (2) is arranged in the box body (1).

2. The heat exchange device according to claim 1, wherein the heat exchange mechanism (2) comprises a first connecting block (21) which is arranged at the upper end of the box body (1) and connected with the connecting pipe, and a first cavity is formed in the first connecting block (21); a plurality of first heating pipes (23) are arranged on the first connecting block (21), and the plurality of first heating pipes (23) are uniformly distributed along the length direction of the first connecting block (21); the lower end of the box body (1) is provided with a second connecting block (22) connected with the first heating pipe (23), a second cavity is formed in the second connecting block (22), and a drain pipe (25) extending out of the box body (1) is arranged on the second connecting block (22).

3. A heat exchange device according to claim 2, wherein a plurality of second heating pipes (24) are arranged on the first connecting block (21), the second heating pipes (24) and the first heating pipes (23) are respectively located at two ends of the first connecting block (21) in the width direction, the first heating pipes (23) and the second heating pipes (24) are arranged at intervals, and the second heating pipes (24) are located between two adjacent first heating pipes (23).

4. A heat exchange device according to claim 3, characterized in that the side walls of the first heating tube (23) and the second heating tube (24) are provided with cooling fins (26).

5. A heat exchange device according to claim 1, wherein the heat exchange mechanism (2) is a serpentine pipe arranged in the box body (1), one end of the serpentine pipe is connected with the connecting pipe, and the other end of the serpentine pipe penetrates out of the box body (1).

6. The heat exchange device according to claim 1, wherein the connecting pipe is sleeved with a heat insulation layer (3), the heat insulation layer (3) is provided with a fixing mechanism (4), the fixing mechanism (4) comprises a connecting belt (7), one end of the connecting belt (7) is provided with a buckle (6), and the other end of the connecting belt is provided with a clamping block (5) clamped with the buckle (6).

7. The heat exchange device according to claim 6, wherein the fixture block (5) comprises a fixing block (51) arranged on the connecting belt (7), a placing groove (511) is formed in the fixing block (51), and a clamping plate (52) is connected in the placing groove (511) in a sliding manner; a spring (53) is arranged in the placing groove (511), one end of the spring (53) is connected to the side bottom wall of the placing groove (511), and the other end of the spring (53) is connected to the clamping plate (52); buckle (6) are including setting up regulating block (61) on connecting band (7), seted up on regulating block (61) with fixed block (51) slide recess (62) of being connected, seted up on the lateral wall of regulating block (61) with draw-in groove (63) of recess (62) intercommunication, draw-in groove (63) with cardboard (52) joint.