CN210373376U

CN210373376U - Steam generator

Info

Publication number: CN210373376U
Application number: CN201921099333.9U
Authority: CN
Inventors: 申秀峰; 许春立; 李靖; 袁晓涛; 安特峰
Original assignee: Beijing Olympia Boiler Co Ltd
Current assignee: Beijing Olympia Boiler Co Ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-04-21
Anticipated expiration: 2029-07-12

Abstract

The utility model provides a steam generator, including lower tube sheet, drum, anterior sealing device and last tube sheet, its characterized in that: the front sealing device comprises an upper sealing ring, a sealing plate and a lower sealing ring, a water pipe bundle is arranged in the boiler barrel and is formed by connecting a plurality of water pipes, the water pipes are connected through a connecting plate, the inner side of the water pipe bundle is a radiation area, the inner part of each water pipe is a water space, the outer side of the water pipe bundle is a flue gas space, the inner side of each water pipe is provided with a fin, an angle plate is arranged on the outer side between each water pipe and the connecting plate, the inner side of each angle plate and the outer side of the water pipe bundle form a second flue gas return stroke, and the outer side of each angle plate and the inner side of the boiler barrel are third flue gas return strokes. The product increases the heat exchange area under the condition that the size of the furnace body structure is not changed, thereby achieving the best heat exchange effect and ensuring the rated power of the boiler.

Description

Steam generator

Technical Field

The utility model relates to a flue gas reflux unit especially relates to a steam generator.

Background

Steam generators are mechanical devices that use the heat energy of a fuel or other energy source to heat water into hot water or steam. The steam generator is mainly suitable for places such as clothing factories, dry cleaning shops, restaurants, bunkers, canteens, restaurants, factories and mines, bean product factories and the like.

The existing steam generator is not sufficient in utilization of fuel, only utilizes heat generated during combustion, does not utilize heat of flue gas generated during combustion, and has a great deal of waste in the using process. The utility model discloses an improve evaporimeter furnace body inner structure, under the unchangeable condition of furnace body structure size, increase heat transfer area to reach the best heat transfer effect, guarantee the rated power of boiler.

SUMMERY OF THE UTILITY MODEL

The utility model provides a steam generator has solved the insufficient problem of flue gas heat utilization, and its technical scheme is as follows:

a steam generator comprises a lower tube plate, a drum, a front sealing device and an upper tube plate, and is characterized in that: the front sealing device comprises an upper sealing ring, a sealing plate and a lower sealing ring, a water pipe bundle is arranged in the boiler barrel and is formed by connecting a plurality of water pipes, the water pipes are connected through a connecting plate, the inner side of the water pipe bundle is a radiation area, the inner part of each water pipe is a water space, the outer side of the water pipe bundle is a flue gas space, the inner side of each water pipe is provided with a fin, an angle plate is arranged on the outer side between each water pipe and the connecting plate, the inner side of each angle plate and the outer side of the water pipe bundle form a second flue gas return stroke, and the outer side of each angle plate and the inner side of the boiler barrel are third flue gas return strokes.

The water tube bundle is cylindrical with an opening at the side.

The height of the connecting plate is smaller than that of the water pipe.

The top end of the angle plate is higher than the top end of the connecting plate and lower than the top end of the water pipe, and the bottom end of the angle plate is higher than the bottom end of the connecting plate.

The water pipe is provided with two fins, and an included angle between the two fins is 90 degrees.

The angle plate is an included angle of 90 degrees.

The upper sealing ring is arranged at the upper end of the water tube bundle and connected with the angle plate, the lower sealing ring is arranged at the lower end of the water tube bundle and connected with the connecting plate, and the sealing plates are connected with the two ends of the water tube bundle.

The sealing plate is provided with a fire hole.

The utility model discloses an improve equipment structure, under the unchangeable condition of furnace body structure size, increase heat transfer area to reach the best heat transfer effect, guarantee the rated power of boiler.

Drawings

FIG. 1 is a schematic view of one such steam generator;

FIG. 2 is a schematic cross-sectional view of the steam generator;

fig. 3 is a schematic diagram of the flue gas circulation.

Detailed Description

Referring to fig. 1, a steam generator is provided with a bracket 14 at the bottom, a shell 15 is arranged outside, a lower tube plate 1, a boiler barrel 2, a front sealing device 3 and an upper tube plate 4 are arranged in the shell 15, and the front sealing device 3 comprises an upper sealing ring 31, a sealing plate 32 and a lower sealing ring 33. The boiler comprises a lower tube plate 1, a boiler barrel 2, an upper sealing ring 31, an upper tube plate 3, a sealing cover 10 and a sealing plate 32, wherein the lower tube plate 1 is provided with the boiler barrel 2, the upper sealing ring 31 is arranged above the boiler barrel 2, the upper tube plate 3 is a ring, the upper tube plate 3 and the front sealing device 3 are concentrically provided with the sealing cover 10, and the sealing plate 32 is provided with a fire hole 9 for connecting a combustor. The steam generator also comprises a smoke exhaust pipe 11, a sewage discharge pipe 12 and a water inlet system 13 which are connected with the shell 15 and the boiler barrel 2,

as shown in fig. 2, a water tube bundle 5 is arranged in the boiler barrel 2, wherein the water tube bundle 5 is a cylinder with an open side, and is formed by connecting a plurality of water tubes 51 through a connecting plate 52; the inner side of the water tube bundle 5 is a radiation area 6, the inner part of the water tube 51 is a water space 7, and the outer side of the water tube bundle 5 is a flue gas space 8.

Furthermore, each water pipe 51 is provided with two fins 511, an angle plate 53 is arranged on the outer side between the water pipe 51 and the connecting plate 52, the inner side of the angle plate 53 and the outer side of the water pipe bundle 5 form a second flue gas return 81, and the outer side of the angle plate 53 and the inner side of the boiler barrel 2 form a third flue gas return 82. The height of the connecting plate 52 is smaller than that of the water pipe 51, the top end of the angle plate 53 is higher than the top end of the connecting plate 52 and lower than that of the water pipe 51, the bottom end of the angle plate 53 is higher than that of the connecting plate 52, and the angle plate 53 is an angle steel.

Further, the sealing plates 32 are connected to both ends of the water tube bundle 5 so as to form the water tube bundle 5 in a closed cylindrical shape; the upper sealing ring 31 is installed on the upper end of the water tube bundle 5 and connected with the angle plate 53, and the lower sealing ring 33 is installed on the lower end of the water tube bundle 5 and connected with the connecting plate 52.

After the fuel is burnt, the fuel enters the radiation area 6 from the fire hole 9, because the lower sealing ring 33, the water pipe bundle 5, the sealing plate 32, the upper sealing ring 31 and the sealing cover 10 form a closed space, the flue gas flows upwards from the radiation area 6 to reach the upper sealing ring 31 and the sealing cover 10; the top end of the angle plate 53 is higher than the top end of the connecting plate 52 and lower than the top end of the water pipe 51, so that the flue gas in the radiation area 6 can enter the second flue gas return 81 from the top end of the angle plate 52, and the bottom end of the angle plate 53 is higher than the bottom end of the connecting plate 52, so that the flue gas can exit from the bottom end of the angle plate 52 and enter the third flue gas return 82, and further enter the smoke exhaust pipe 11, and the flue gas circulation schematic diagram shown in fig. 3 is formed.

Furthermore, the included angle between the two fins 511 is 90 degrees, on one hand, the welding manufacturing is convenient, on the other hand, the arrangement and the arrangement in the boiler are also convenient, meanwhile, the heating surface is also increased, and the efficiency of the boiler is improved. The included angle of the angle plate 53 is 90 degrees, on one hand, smoke can be blocked, and on the other hand, the radiation convection heating surface can be increased.

The utility model discloses a device mainly improves to the water pipe of evaporimeter, under the unchangeable condition of furnace body structure size, increases heat transfer fin, and then heat transfer area to reach the best heat transfer effect, guarantee the rated power of boiler.

Claims

1. A steam generator comprising a lower tube plate (1), a drum (2), a front sealing means (3) and an upper tube plate (4), characterized in that: the front sealing device (3) comprises an upper sealing ring (31), a sealing plate (32) and a lower sealing ring (33), a water pipe bundle (5) is arranged in the boiler barrel (2), the water pipe bundle (5) is formed by connecting a plurality of water pipes (51), the water pipes (51) are connected through a connecting plate (52), the inner side of the water pipe bundle (5) is a radiation area (6), the inside of the water pipe (51) is a water space (7), the outer side of the water pipe bundle (5) is a flue gas space (8), fins (511) are arranged on the inner side of the water pipe (51), an angle plate (53) is arranged on the outer side between the water pipe (51) and the connecting plate (52), the inner side of the angle plate (53) and the outer side of the water tube bundle (5) form a second flue gas return stroke (81), and a third flue gas return stroke (82) is formed between the outer side of the angle plate (53) and the inner side of the boiler barrel (2).

2. A steam generator according to claim 1, characterized in that the water tube bundle (5) is cylindrical with open sides.

3. A steam generator according to claim 1, characterized in that the height of the connection plate (52) is smaller than the height of the water tubes (51).

4. The steam generator according to claim 1, wherein the top end of the angle plate (53) is higher than the top end of the connection plate (52) than the top end of the water pipe (51), and the bottom end of the angle plate (53) is higher than the bottom end of the connection plate (52).

5. The steam generator according to claim 1, characterized in that the water tube (51) is provided with two fins (511), the angle between the two fins (511) being 90 °.

6. The steam generator according to claim 1, characterized in that the angle plate (53) is at an angle of 90 °.

7. The steam generator as claimed in claim 1, wherein the upper sealing ring (31) is installed at the upper end of the water tube bundle (5) to be connected to the corner plate (53), the lower sealing ring (33) is installed at the lower end of the water tube bundle (5) to be connected to the connection plate (52), and the sealing plates (32) are connected to both ends of the water tube bundle (5).

8. A steam generator according to claim 1, characterized in that the sealing plate (32) is provided with fire ports (9).