CN209926602U

CN209926602U - Steam air heater for power station boiler

Info

Publication number: CN209926602U
Application number: CN201920645563.4U
Authority: CN
Inventors: 黄羽雕; 尹华彩; 赖韶华; 谭胜辉
Original assignee: Jianglian International Engineering Co Ltd
Current assignee: Jianglian International Engineering Co Ltd
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2020-01-10
Anticipated expiration: 2029-05-05

Abstract

The utility model discloses a power plant boiler steam air heater, including first steam chest and second steam chest, the relative one side outer wall of first steam chest and second steam chest has first bellows and second bellows through the fix with screw respectively, and the relative one side outer wall of first bellows and second bellows all has the heat preservation shell through the fix with screw, the relative one side outer wall of first steam chest and second steam chest all opens the steam pipe jack, and the inner wall of steam pipe jack is pegged graft and is had the steam pipe, the relative one side outer wall of first bellows and second bellows has all opened the tuber pipe jack. The utility model discloses can form the thermal-insulated air blanket that keeps warm to the tuber pipe, prevent that the inside gaseous heat of tuber pipe from losing too early, help guaranteeing the temperature of exhaust air, the branch gas board that the slope set up can slow down the speed that steam rises, help guaranteeing that the air of different positions is heated evenly, can prolong the contact time of air and steam pipe, help guaranteeing that the air fully absorbs the heat in the steam.

Description

Steam air heater for power station boiler

Technical Field

The utility model relates to a steam air heater technical field especially relates to a power plant boiler steam air heater.

Background

The steam fan heater of the power station boiler takes steam as a medium, heats air by using the heat of the steam, can quickly raise the indoor temperature, and is widely applied to factory workshops and large public buildings at present.

The existing steam warm air blower generally comprises a steam box, a heat exchanger and a fan, wherein the heat exchanger is composed of a plurality of pipelines which are parallel to each other, steam flows in the pipelines of the heat exchanger, the fan drives air to flow on the outer wall of the pipelines of the heat exchanger, heat exchange of the steam and the air is realized, the air temperature is improved, in order to guarantee the efficiency of the heat exchange, the pipelines of the heat exchanger need to have good heat conduction performance, the steam heat is caused to be lost too early, and the temperature of the air heated by the warm air blower is not convenient to control.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a steam air heater of a power station boiler.

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

the utility model provides a power plant boiler steam air heater, includes first steam chest and second steam chest, the relative one side outer wall of first steam chest and second steam chest has first bellows and second bellows through the fix with screw respectively, and the relative one side outer wall of first bellows and second bellows all has the heat preservation shell through the fix with screw, the relative one side outer wall of first steam chest and second steam chest has all opened the steam pipe jack, and the inner wall of steam pipe jack is pegged graft and has been had the steam pipe, the relative one side outer wall of first bellows and second bellows has all opened the tuber pipe jack, and the inner wall of tuber pipe jack is pegged graft and has the tuber pipe, the second bellows is close to one side outer wall of first bellows and is opened there is the air vent, and the top outer wall of first bellows has the air pump through the fix with screw.

Preferably, the outer wall of one side of the heat preservation shell is provided with an air outlet, and the inner wall of the air outlet is fixed with a dust screen through a screw.

Preferably, an air inlet hole and an air outlet hole are formed in the outer wall of one side of each of the first steam box and the second steam box respectively, and an air inlet pipe and an exhaust pipe are inserted into the inner walls of the air inlet hole and the air outlet hole respectively.

Preferably, the outer walls of the bottoms of the first steam box and the second steam box are provided with drain holes, and the inner walls of the drain holes are spliced with drain pipes.

Preferably, the inner wall of the bottom of the first steam box is welded with a gas distribution plate, and the outer wall of the gas distribution plate is provided with uniformly distributed gas uniform holes.

Preferably, the gas distribution plate is obliquely arranged, the bottom of the gas distribution plate is close to the first bellows, and the top of the gas distribution plate is far away from the first bellows.

Preferably, the steam pipe is located inside the air pipe, and the outer wall of the steam pipe is welded with the heat dissipation fins, and the heat dissipation fins are of a spiral structure.

Compared with the prior art, the utility model provides a power plant boiler steam air heater possesses following beneficial effect:

1. this power plant boiler steam air heater through heat preservation shell and the air vent that sets up, and inside the gas through the heating got into the heat preservation shell through the air vent, can form heat preservation thermal-insulated gas layer to the tuber pipe, prevents that the gaseous heat in tuber pipe inside from losing early, helps guaranteeing the temperature of exhaust air.

2. This power plant boiler steam air heater, through the gas distribution board and the even gas pocket that set up, because steam can rise, cause easily that there is the difference in temperature about first steam chest is inside, so there is the difference in the steam temperature that gets into different steam pipes inside, the influence is to the equilibrium of gas heating, the gas distribution board that the slope set up can slow down the speed that steam rises, make steam evenly distributed inside first steam chest through even gas pocket, help guaranteeing that the air of different positions is heated evenly.

3. This power plant boiler steam air heater, through the radiating fin that sets up, spiral helicine radiating fin guide air flows along the steam pipe is encircleed, can prolong the contact time of air and steam pipe, helps guaranteeing that the air fully absorbs the heat in the steam.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses simple structure, convenient operation helps guaranteeing the temperature of exhaust air, helps guaranteeing that the air fully absorbs the heat in the steam.

Drawings

Fig. 1 is a schematic view of the overall structure of a steam air heater of a utility boiler;

FIG. 2 is a schematic cross-sectional view of a steam air heater of a utility boiler according to the present invention;

fig. 3 is a schematic structural view of the steam pipe of the steam heater of the utility model.

In the figure: 1-air inlet pipe, 2-first steam box, 3-first air box, 4-heat preservation shell, 5-dust screen, 6-second air box, 7-second steam box, 8-air pump, 9-air homogenizing hole, 10-air distributing plate, 11-steam pipe, 12-air pipe, 13-air vent, 14-water drain pipe, 15-air exhaust pipe and 16-radiating fin.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-2, a power plant boiler steam air heater, including first steam chest 2 and second steam chest 7, the relative one side outer wall of first steam chest 2 and second steam chest 7 has first bellows 3 and second bellows 6 through the fix with screw respectively, and the relative one side outer wall of first bellows 3 and second bellows 6 all has insulation shell 4 through the fix with screw, the relative one side outer wall of first steam chest 2 and second steam chest 7 all opens the steam pipe jack, and the inner wall of steam pipe jack is pegged graft and is had steam pipe 11, the relative one side outer wall of first bellows 3 and second bellows 6 all opens the tuber pipe jack, and the inner wall of tuber pipe jack is pegged graft and is had the tuber pipe 12, the one side outer wall that second bellows 6 is close to first bellows 3 opens there is air vent 13, and the top outer wall of first bellows 3 has air pump 8 through the fix with screw.

The utility model discloses in, one side outer wall of heat preservation shell 4 is opened there is the air outlet, and the inner wall of air outlet has dust screen 5 through the fix with screw.

The utility model discloses in, one side outer wall of first steam chest 2 and second steam chest 7 is opened respectively has inlet port and exhaust hole, and the inner wall in inlet port and exhaust hole is pegged graft respectively and is had intake pipe 1 and blast pipe 15.

The utility model discloses in, the bottom outer wall of first steam chest 2 and second steam chest 7 has all opened the wash port, and the inner wall of wash port is pegged graft and is had drain pipe 14.

The utility model discloses in, the bottom inner wall welding of first steam box 2 has gas distribution plate 10, and gas distribution plate 10's outer wall opens the even gas hole 9 that has evenly distributed.

The utility model discloses in, divide gas board 10 slope setting, divide the bottom of gas board 10 to be close to first bellows 3, divide the top of gas board 10 to keep away from first bellows 3.

Example 2

Referring to fig. 3, a steam heater for a utility boiler includes that the steam pipe 11 is located the inside of tuber pipe 12, and the outer wall welding of steam pipe 11 has radiating fin 16, and radiating fin 16 is helical structure, and helical radiating fin 16 guides the air to flow along steam pipe 11 encircles, can prolong the contact time of air and steam pipe 11, helps guaranteeing that the air fully absorbs the heat in the steam.

The working principle is as follows: steam passes through inside intake pipe 1 gets into 2 prison steam chests, divide gas plate 10 to block steam and rise, make steam evenly get into inside steam pipe 11, start inside air pump 8 with the first bellows 3 of outside air suction, inside the air gets into second bellows 6 through tuber pipe 12, steam in 12 inside and steam pipe 11 of tuber pipe carries out the heat exchange, air temperature rises, steam temperature descends, the air after being heated passes through air vent 13 and gets into heat preservation shell 4, discharge through dust screen 5.

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 steam air heater of a power station boiler comprises a first steam box (2) and a second steam box (7), and is characterized in that the outer walls of the opposite sides of the first steam box (2) and the second steam box (7) are respectively fixed with a first air box (3) and a second air box (6) through screws, the outer walls of the opposite sides of the first air box (3) and the second air box (6) are respectively fixed with a heat preservation shell (4) through screws, the outer walls of the opposite sides of the first steam box (2) and the second steam box (7) are respectively provided with a steam pipe jack, the inner walls of the steam pipe jacks are respectively inserted with a steam pipe (11), the outer walls of the opposite sides of the first air box (3) and the second air box (6) are respectively provided with an air pipe jack, the inner walls of the air pipe jacks are respectively inserted with an air pipe (12), the outer wall of the side, which is close to the first air box (3), of the second air box (6) is provided with, and an air pump (8) is fixed on the outer wall of the top of the first air box (3) through screws.

2. The steam air heater of the utility boiler according to claim 1, characterized in that an air outlet is formed on the outer wall of one side of the heat-insulating shell (4), and a dust screen (5) is fixed on the inner wall of the air outlet through screws.

3. A steam air heater for a power station boiler according to claim 2, characterized in that the outer wall of one side of the first steam box (2) and the second steam box (7) is respectively provided with an air inlet hole and an air outlet hole, and the inner wall of the air inlet hole and the inner wall of the air outlet hole are respectively inserted with an air inlet pipe (1) and an air outlet pipe (15).

4. A steam fan heater for utility boilers according to claim 3, characterized in that the outer walls of the bottom of the first steam box (2) and the second steam box (7) are provided with drain holes, and the inner walls of the drain holes are inserted with drain pipes (14).

5. A steam air heater for a power plant boiler according to claim 4, characterized in that the inner wall of the bottom of the first steam box (2) is welded with a gas distribution plate (10), and the outer wall of the gas distribution plate (10) is provided with uniformly distributed uniform air holes (9).

6. A power boiler steam fan according to claim 5, characterized in that the gas distribution plate (10) is arranged obliquely, the bottom of the gas distribution plate (10) being close to the first windbox (3) and the top of the gas distribution plate (10) being remote from the first windbox (3).

7. A plant boiler steam air heater according to claim 1, characterized in that the steam pipe (11) is located inside the air pipe (12), and the outer wall of the steam pipe (11) is welded with heat dissipating fins (16), the heat dissipating fins (16) being of a spiral structure.