CN219531765U

CN219531765U - Strong disturbance type plate air preheater

Info

Publication number: CN219531765U
Application number: CN202320473052.5U
Authority: CN
Inventors: 赵强; 邵春佳; 陶健; 朱甜; 朱益
Original assignee: JIANGSU YANXIN SCI-TECH CO LTD
Current assignee: JIANGSU YANXIN SCI-TECH CO LTD
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-08-15
Anticipated expiration: 2033-03-14

Abstract

The utility model relates to a strong disturbance type plate type air preheater which comprises a plurality of channels, wherein a heat exchange tube group is formed by overlapping and welding the channels, two ends of the heat exchange tube group are welded with a supporting frame in a sealing way, disturbance bodies are arrayed in each channel, the disturbance bodies of two adjacent channels are arranged in a staggered way, the disturbance bodies of the two channels are distributed uniformly, the disturbance bodies are in a Weiqi shape and hollow in the interior, the upper surface and the lower surface of the disturbance bodies are planes, and the single-side plane of the disturbance body is firmly spot-welded with the inner wall of the channel. The utility model has simple structure, the adjacent channels share the heat exchange plate, the equipment is light in weight, the hollow weiqi-shaped disturbing body has better disturbance to the gas of the smoke and air sides, the heat transfer efficiency in unit volume is higher, the working pressure threshold value is higher, the strength is high, the structure is more stable, the circulation resistance is small, the dust is not easy to accumulate, and the cleaning is convenient.

Description

Strong disturbance type plate air preheater

Technical Field

The utility model relates to the technical field of air preheaters, in particular to a strong disturbance type plate air preheater.

Background

The plate-type air preheater is widely applied to a flue gas waste heat recovery system of a petrochemical tubular heating furnace at present, has the advantages of compact volume, simple structure, low manufacturing cost and the like, but has general heat transfer efficiency. The traditional plate-type air heat exchanger adopts flat steel bar curved arcs to make the turbulent flow strip support between plates, the air side of the heat exchanger is positive pressure, the flue gas side is negative pressure, the turbulent flow strip support has turbulent flow strip dumping risk at the working pressure of more than or equal to 10000pa, the turbulent flow strip support structure is unstable, the turbulent flow strip support structure has poor disturbance to air flow, the resistance is large, the energy consumption is high, the ash deposition is easy, and the daily maintenance workload is increased.

Disclosure of Invention

The utility model aims to overcome the defects, and provides the strong disturbance type plate air preheater, which improves the heat transfer efficiency of the traditional plate air preheater, improves the working pressure threshold of the traditional plate air preheater, solves the defects of high resistance and high energy consumption of the traditional plate air preheater, solves the defect of easy ash deposition of the traditional plate air preheater, and reduces the daily maintenance workload of equipment.

The purpose of the utility model is realized in the following way:

the utility model provides a strong disturbance template formula air heater, includes a plurality of passageways, and a plurality of passageway stack welding forms the heat exchange tube group, and heat exchange tube group both ends and braced frame seal welding have the disturbance body in each passageway, and the disturbance body of two adjacent passageways crisscross setting, and the disturbance body of alternate two passageways arranges unanimously, the disturbance body is weiqi form and inside cavity, the upper and lower face of disturbance body is the plane, and the unilateral plane of disturbance body and the spot welding of passageway inner wall are firm.

Preferably, each channel is formed by welding two heat exchange plates in a buckling mode up and down, one pair of the heat exchange plates is folded upwards, and the other pair of the heat exchange plates is folded downwards.

Preferably, the two adjacent channels are formed by buckling three heat exchange plates in pairs, wherein the long opposite sides of the two heat exchange plates are buckled with each other to form one channel, the short opposite sides of the two heat exchange plates are buckled with each other to form the other channel, the heat exchange plates in the middle serve as common connecting pieces of the adjacent channels, and the directions of the adjacent channels are alternately changed.

Preferably, the disturbing body is formed by welding two spoiler plates, and the spoiler plates are bowl-shaped and are formed by compression molding of steel plate sheets.

The beneficial effects of the utility model are as follows:

the heat exchange plate is shared by adjacent channels, the heat exchange plate is light in weight, the heat exchange area per unit volume is large, the hollow Weiqi-shaped disturbing body has better disturbance to gas at the smoke and air sides, the heat transfer efficiency per unit volume is higher, the working pressure threshold value is higher, the strength is high, the structure is more stable, the circulation resistance is small, dust is not easy to accumulate, the cleaning is convenient, the long-period efficient operation of the equipment is ensured, the smoke exhaust temperature is further reduced, the heat efficiency is improved, and the market prospect is wide.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a side view of fig. 1.

Fig. 4 is a schematic structural view of a single heat exchange plate.

Fig. 5 is a schematic view of a welding structure of a plurality of heat exchange plates.

FIG. 6 is a schematic diagram of the welding of a channel to a interfering body.

FIG. 7 is a schematic diagram of the structure of a interfering body.

Wherein: a heat exchange plate 1; a support frame 2; interfering body 3.

Description of the embodiments

Referring to fig. 1-7, the utility model relates to a strong disturbance type plate type air preheater, which comprises a plurality of channels, wherein the channels are overlapped and welded to form a heat exchange tube group, two ends of the heat exchange tube group are welded with a supporting frame 2 in a sealing way, each channel is formed by welding two heat exchange plates 1 in a buckling way up and down, one pair of edges of the heat exchange plates 1 are folded upwards, and the other pair of edges are folded downwards. The two adjacent channels are formed by buckling three heat exchange plates 1 in pairs, wherein long opposite sides of the two heat exchange plates 1 are buckled mutually to form one channel, short opposite sides of the two heat exchange plates 1 are buckled mutually to form the other channel, the heat exchange plates 1 in the middle serve as common connecting pieces of the adjacent channels, and the directions of the adjacent channels are alternately changed. Interfering bodies 3 are arranged in each channel in an array manner, the interfering bodies 3 of two adjacent channels are arranged in a staggered manner, and the interfering bodies 3 of the two channels are distributed uniformly.

The disturbing body 3 is in a Weiqi shape and hollow, the upper surface and the lower surface of the disturbing body 3 are planes, and the unilateral plane of the disturbing body 3 is firmly spot-welded with the inner wall of the channel. The disturbing body 3 is formed by welding two spoiler plates, the spoiler plates are bowl-shaped, and the spoiler plates 3 are formed by compression molding of steel plate sheets. The two spoilers are assembled and welded in the positive and negative directions, and the surface of the disturbing body 3 is provided with pits or waves for increasing the heat exchange area, improving the strength and strengthening the disturbance.

The thickness of the heat exchange plate 1 is between 0.8mm and 3mm, the thickness of the interfering body 3 is preferably between 0.8mm and 1.2mm, and the heat exchange plate is made of carbon steel or stainless steel.

Along the length direction of the heat exchange tube group, each disturbing body 3 is arranged in a regular triangle.

In addition to the above embodiments, the present utility model also includes other embodiments, and all technical solutions that are formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present utility model.

Claims

1. The utility model provides a strong disturbance template air heater, includes a plurality of passageways, and a plurality of passageway stack welding form heat exchange tube group, heat exchange tube group both ends and braced frame seal welding, its characterized in that: the disturbance bodies in each channel are arrayed, the disturbance bodies in two adjacent channels are staggered, the disturbance bodies in the two channels are distributed uniformly, the disturbance bodies are in a Weiqi shape and hollow, the upper surface and the lower surface of the disturbance bodies are planes, and the single-side plane of the disturbance body is firmly spot-welded with the inner wall of the channel.

2. A highly turbulent plate air preheater as set forth in claim 1, wherein: each channel is formed by welding two heat exchange plates in an up-down buckling mode, one pair of the heat exchange plates is folded upwards, and the other pair of the heat exchange plates is folded downwards.

3. A highly turbulent plate air preheater as set forth in claim 2, wherein: the two adjacent channels are formed by buckling three heat exchange plates in pairs, wherein the long opposite sides of the two heat exchange plates are buckled with each other to form one channel, the short opposite sides of the two heat exchange plates are buckled with each other to form the other channel, the heat exchange plate in the middle is used as a shared connecting piece of the adjacent channels, and the directions of the adjacent channels are alternately changed.

4. A highly turbulent plate air preheater as set forth in claim 1, wherein: the disturbing body is formed by welding two spoiler plates, the spoiler plates are bowl-shaped and are formed by compression molding of steel plate sheets.