CN218620909U

CN218620909U - Energy plate of H-shaped straight fin heat exchange tube structure and evaporative cooler comprising same

Info

Publication number: CN218620909U
Application number: CN202221879296.5U
Authority: CN
Inventors: 徐守国; 唐文俊; 杨桂兰
Original assignee: Nanjing Huadian Energy Saving And Environmental Protection Co ltd
Current assignee: Nanjing Huadian Energy Saving And Environmental Protection Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-03-14
Anticipated expiration: 2032-07-20

Abstract

The utility model provides an ability board of straight fin heat exchange tube structure of H shape and contain this ability evaporative cooler of board, the ability board mainly comprises the straight fin of H shape on heat exchange tube and heat exchange tube surface, the heat exchange tube is horizontal snakelike state, both ends opening is located the top and the bottom of ability board respectively, every section horizontal body is parallel to each other in the heat exchange tube, the body all is equipped with a plurality of H shape straight fin boards that have vertical surface outward, and the straight fin board of H shape on the different horizontal body aligns from top to bottom, form the vertical surface of the parallel discontinuous type of a plurality of. This can board erects the wall form in the evaporative cooler tower body and places, and wherein the impact of high dusty converter flue gas can be kept out to H shape fin, increases heat transfer area, realizes dusty air current and to the horizontal erodeing of heat exchange tube, improves heat transfer effect, and the big heat transfer surface of fin is perpendicular surface simultaneously. The non-continuous fins reduce dust accumulation and reduce the abrasion of dust to a heat exchange surface. The energy plate can recover the heat of the converter flue gas and can generate the medium-high pressure saturated steam of the grade.

Description

Energy plate of H-shaped straight fin heat exchange tube structure and evaporative cooler comprising same

Technical Field

The utility model belongs to the technical field of converter flue gas waste heat recovery, in particular to straight fin heat exchange tube structure of H shape can board and contain this evaporative cooler that can board.

Background

The converter gas (sometimes called converter flue gas) at the temperature of 1600 ℃ from the steel converter contains more than 70 percent of combustible component CO, and the rest is CO ₂ 、O ₂ And is therefore also referred to as converter gas. And also contains a large amount of dust which contains more available components such as iron, magnesium and the like and needs to be recovered) is firstly put into a vaporization cooling flue waste heat boiler and is cooled to 1000 ℃. The dust in this temperature range is soft and has little abrasiveness to the metal wall surface. At present, the vaporization cooling flue waste heat boiler is widely used, and almost every converter is equipped. Characteristics of the converter gas: high temperature, dustiness, magnetism, abrasiveness, static electricity, intermittence, periodicity, flammability and extremely harsh conditions.

At present, converter gas at a temperature of 1000 ℃ below zero is introduced into an evaporative cooler, and is cooled to 200 ℃ below zero with cold water to remove dust and purify the converter gas because dust becomes hard and the abrasion to the metal wall surface is large. Therefore, there is a great waste of energy and it is very important to recover this high grade heat.

SUMMERY OF THE UTILITY MODEL

The technical problem is as follows: in order to solve the defects of the prior art, the utility model provides a straight fin heat exchange tube structure of H shape can board and contain this can the evaporative cooler of board, and it can effectively retrieve the waste heat of converter flue gas high temperature section.

The technical scheme is as follows: the utility model provides a converter flue gas waste heat recovery's of straight fin heat exchange tube structure of H shape ability board, the ability board mainly comprises the straight fin of H shape on heat exchange tube and heat exchange tube surface, and the heat exchange tube is horizontal snakelike state, and the both ends opening is located the top and the bottom of ability board respectively, and every section horizontal body is parallel to each other in the heat exchange tube, all is equipped with the straight fin of a plurality of H shape that has vertical surface outside the body, and aligns from top to bottom the straight fin of H shape on the different horizontal body, forms the parallel vertical surface of discontinuous type of a plurality of.

The upper end openings of the energy plate heat exchange tubes are connected to an external steam drum, and the lower end openings of the energy plate heat exchange tubes are connected to the steam drum through a forced circulation pump, thereby forming a circulation passage of a cooling medium.

As an embodiment, the heat exchange tube is a single H-shaped finned tube or a double H-shaped finned tube.

As a preferable or improved scheme:

the energy plate further comprises an upper anti-abrasion cover arranged at the upper end of the topmost H-shaped straight fin, and the upper anti-abrasion cover comprises a vertical plate at the top and inclined plates at two sides connected with the lower ends of the vertical plate. The upper anti-wear cover plays an anti-wear protection role for the energy plates, and the vertical plate at the top of the upper anti-wear cover and the inclined plates at the two sides respectively play a guiding role for dust.

The invention also provides an evaporative cooler, which comprises the converter flue gas waste heat recovery energy plate with the H-shaped straight fin heat exchange tube structure, wherein the energy plate) is arranged in the upper area inside the evaporative cooler tower body, is arranged below the flue gas inlet and is arranged in a vertical wall shape.

As an embodiment, the energy plates are uniformly distributed in the circumferential direction in the evaporative cooler tower body and are radially arranged.

Preferably, the energy plates are arranged in different widths and are staggered.

As another embodiment, the number of the energy plates is more than two, and the energy plates are distributed on two sides of any longitudinal section penetrating through the central axis in the evaporative cooler tower body.

Further preferably, the energy plates are symmetrically distributed on two sides of any longitudinal section penetrating through the central axis in the evaporative cooler tower body, and the energy plates in the same side are arranged in parallel.

More preferably, the energy plates are arranged in different widths, and are sequentially placed.

The evaporative cooler is characterized by further comprising a spraying device arranged above the energy plate and/or below the energy plate, wherein the spraying device comprises a conveying pipeline and an internal spray head which are arranged outside the tower body and a cold water inlet which is arranged on the side wall of the tower body, the spray head is arranged on the side wall of the tower body, and the conveying pipeline is connected with the cold water inlet.

The dust content in the smoke is larger and generally reaches 150 g/m ³ In addition, the particles are large, some of the particles even have the particle size of more than 2mm, and the dust contains a plurality of metal elements, so the dust is seriously abraded to the wall surface, and the metal particles generate static electricity in collision and the like in the flowing process, and have adsorbability and magnetism. The utility model discloses an can the board for erecting the wall face and arrange, can the windward side width of board very little, consequently, can not occupy more flue gas flow area, that is to say set up behind the board, because waste heat recovery is to the cooling of flue gas, and compare in the vapor entering that original water spray produced in the flue gas, set up behind the board to the velocity of flow of flue gas nearly unchangeable, can not produce the wearing and tearing to the board because of flue gas velocity of flow grow a lot. The energy plate can be not provided with a shell and a heat conduction layer, and the heat exchange tube is directly arranged in the flue gas as the energy plate. As improvement scheme, the ability board also can set up the shell and with the heat-conducting layer, the shell adopts high temperature resistant nonmagnetic material (for example high temperature resistant stainless steel), can not make magnetic dust adsorb on the ability board to keep the cleanness of face, make the heat transfer last high-efficient.

Has the beneficial effects that: compared with the prior art, the utility model discloses the ability board has the vertical heat transfer surface of the discontinuous type of large tracts of land, can carry out waste heat recovery to the high temperature section flue gas in the converter flue gas evaporative cooler, the H shape fin can keep out the impact of high dust-laden, increase heat transfer area, realize dusty air current and transversely erode the heat transfer surface, improve the heat transfer effect, the fin surface is perpendicular surface simultaneously, the fin is the fin of discontinuous type, the deposition has been reduced, the wearing and tearing of dust to the heat transfer surface have been reduced, can produce the middle and high pressure saturated steam of level, reduce the water spray volume, reduce the flue gas flow of evaporative cooler export, reduce the subsequent processing cost of converter flue gas.

Drawings

Fig. 1 is a schematic structural view of the energy plate of the present invention.

Fig. 2 is a schematic structural view (double row pipes) of the H-shaped straight fins in the energy plate of the present invention.

Fig. 3 is a schematic structural view (single-row tube) of the H-shaped straight fin in the energy plate of the present invention.

Fig. 4 is a schematic structural view of the upper wear-resistant cover of the energy plate of the present invention.

Fig. 5 is a schematic diagram of arrangement (circumferential uniform distribution) in the evaporative cooler in the energy plate of the present invention.

Fig. 6 is a schematic diagram of the arrangement of the energy plate in the evaporative cooler (parallel type).

Fig. 7 is a schematic view of the location of the energy plate in the evaporative cooler of the present invention.

Detailed Description

The device of the present invention will be further explained with reference to the accompanying drawings.

Example 1

The utility model provides an energy board of converter flue gas waste heat recovery of straight fin heat exchange tube structure of H shape, as shown in figure 1, energy board 1 mainly comprises the straight fin 12 of H shape on heat exchange tube 11 and heat exchange tube 11 surface, heat exchange tube 11 is the snakelike state of level, both ends opening is located the top and the bottom of ability board 1 respectively, every section horizontal body is parallel to each other in the heat exchange tube 11, all be equipped with a plurality of H shape straight fin 12 that has vertical surface outside the body, and the H shape straight fin 12 on the different horizontal bodies aligns from top to bottom, form the vertical surface of the parallel discontinuous type of a plurality of.

As shown in fig. 2 and 3, the heat exchange tubes may be single H-shaped finned tubes or double H-shaped finned tubes, depending on the number of single fin welded base tubes.

As shown in fig. 4, the energy plate 1 further comprises an upper wear-proof cover 13 disposed at the upper end of the topmost H-shaped straight fin 12, and the upper wear-proof cover 13 comprises a top vertical plate and two side sloping plates connected with the lower ends of the vertical plate. The upper anti-abrasion cover 13 can protect the plates from abrasion, and the vertical plate at the top and the inclined plates at the two sides respectively guide dust. The inclined plate angle theta of the upper wear-resistant cover 13 is designed and manufactured according to the repose angle of dust in the converter flue gas.

The upper end openings of the energy plate heat exchange tubes 11 are connected to an external drum, and the lower end openings of the energy plate heat exchange tubes 11 are connected to the drum by a forced circulation pump, thereby forming a circulation passage of a cooling medium.

The working principle of the energy plate is as follows:

the high-temperature converter flue gas passes through the energy plate 1,H-shaped straight fins 12 to absorb the heat released by the high-temperature converter flue gas and then is transmitted to the heat exchange tube 11, and finally is transmitted to water in the heat exchange tube 11. Saturated water from the steam pocket is driven by a forced circulation pump to be sent into the heat exchange tube 11, the saturated water is changed into a steam-water mixture after absorbing the heat released by coal gas, the steam-water mixture is sent to the steam pocket from an outlet at the upper end of the heat exchange tube 11, after steam-water separation, saturated steam is sent out, and the saturated water participates in circulation again.

As shown in fig. 7, when the energy plate is applied, it is installed in an evaporative cooler, and the energy plate 1 is disposed in the upper region inside the tower body of the evaporative cooler 2, below the flue gas inlet, and is placed in a vertical wall shape. The energy plates 1 are all installed close to the inner wall of the tower body so as to facilitate the upper end opening and the lower end opening of the heat exchange tube 11 to penetrate through the shell of the tower body and be communicated with an external steam pocket.

As an embodiment, the energy plates 1 are uniformly distributed in the circumferential direction in the tower of the evaporative cooler 2 and are radially disposed, as shown in fig. 5. The vertical wall surface is arranged to be suitable for longitudinal washing of external smoke along the vertical plate surface. The energy plates 1 can be set to different widths and are arranged in a staggered manner to highly and efficiently utilize the space in the tower, so that the flue gas scouring speed from top to bottom is uniform.

As another embodiment, as shown in fig. 6, the energy plates 1 are symmetrically distributed on both sides of any longitudinal section passing through the central axis in the tower body of the evaporative cooler 2, and the energy plates in the same side are arranged in parallel. The vertical wall is suitable for the longitudinal washing of external smoke along the vertical plate surface. The energy plates 1 can be set to different widths and are sequentially placed so as to highly efficiently utilize the space in the tower and ensure that the flue gas scouring speed from top to bottom is uniform.

The evaporative cooler further comprises a spraying device arranged above and/or below the energy plate, the spraying device comprises a conveying pipeline and an internal spray head which are arranged outside the tower body, and a cold water inlet arranged on the side wall of the tower body, the spray head is arranged on the side wall of the tower body, and the conveying pipeline is connected with the cold water inlet.

Claims

1. The utility model provides an energy board of converter flue gas waste heat recovery of straight fin heat exchange tube structure of H shape, a serial communication port, energy board (1) mainly comprises the straight fin of H shape (12) on heat exchange tube (11) and heat exchange tube (11) surface, heat exchange tube (11) are horizontal snakelike state, both ends opening is located the top and the bottom of energy board (1) respectively, every section horizontal body is parallel to each other in heat exchange tube (11), all be equipped with a plurality of H shape straight fin (12) that have vertical surface outside the body, and align from top to bottom H shape straight fin (12) on the different horizontal bodies, form the vertical surface of the parallel discontinuous type of a plurality of.

2. The converter flue gas waste heat recovery energy plate with the H-shaped straight fin heat exchange tube structure as claimed in claim 1, wherein the heat exchange tubes (11) are single H-shaped finned tubes or double H-shaped finned tubes.

3. The energy plate for recovering the flue gas waste heat of the converter with the H-shaped straight fin heat exchange tube structure according to claim 1, wherein the energy plate (1) further comprises an upper wear-resistant cover (13) arranged at the upper end of the topmost H-shaped straight fin (12), and the upper wear-resistant cover (13) comprises a top vertical plate and two side inclined plates connected with the lower end of the vertical plate.

4. An evaporative cooler, comprising the converter flue gas waste heat recovery energy plate with the H-shaped straight fin heat exchange tube structure as claimed in any one of claims 1 to 3, wherein the energy plate (1) is arranged in the upper area inside the tower body of the evaporative cooler (2) below a flue gas inlet and is placed in a vertical wall shape.

5. An evaporative cooler according to claim 4, characterised in that the energy panels (1) are evenly distributed circumferentially within the tower of the evaporative cooler (2) and are radially disposed.

6. An evaporative cooler according to claim 5, characterised in that the energy panels (1) are arranged in different widths, staggered.

7. An evaporative cooler according to claim 4, characterized in that there are more than two of the energy plates (1) distributed on either side of a longitudinal section through the central axis in the tower of the evaporative cooler (2).

8. An evaporative cooler according to claim 7, wherein the energy panels (1) are symmetrically disposed on either side of a longitudinal section through the central axis in the tower of the evaporative cooler (2), and the energy panels in the same side are disposed parallel to each other.

9. An evaporative cooler according to claim 8, characterised in that the energetic panels (1) are arranged in different widths, placed in sequence.