CN212620325U

CN212620325U - Heat transfer element plate for air preheater

Info

Publication number: CN212620325U
Application number: CN202020733477.1U
Authority: CN
Inventors: 王长霞; 吕成; 王加奇; 辛明玉; 赵岩; 王瑞; 冯聪; 王雅静; 陈瑶; 徐金辉; 祖一莎; 魏金明; 陈曦
Original assignee: Harbin Boiler Preheater Co ltd
Current assignee: Harbin Boiler Preheater Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2021-02-26
Anticipated expiration: 2030-05-07

Abstract

A heat transfer element plate for an air preheater belongs to a heat transfer element. The front end of the positioning plate is provided with a corrugated plate, the inner part of the outer wall of the front end of the corrugated plate is provided with a first ash through groove, the corrugated groove a is arranged in the outer wall of the front end of the corrugated plate at the right end of the first ash through groove, the first flue gas channel is arranged in the outer wall of the front end of the corrugated plate at the left end of the first ash through groove, the second ash through groove is formed in the outer wall of the front end of the positioning plate, the second flue gas channel is formed in the outer wall of the front end of the positioning plate at the right end of the second ash through groove, on one hand, the performance of the product is improved, the characteristics of good heat exchange effect and small circulation resistance are achieved, the exhaust gas temperature of the boiler can be effectively reduced, the boiler efficiency is improved, the contribution is made to energy conservation and emission reduction, the total weight of the air preheater can be reduced, the cost of the company is reduced, and the industry competitiveness of the company is improved, the novel heat transfer element plate for the air preheater enables the use effect of the rotary air preheater to be better.

Description

Heat transfer element plate for air preheater

Technical Field

The utility model belongs to the technical field of the rotary air heater is relevant, concretely relates to a heat transfer element board for air heater.

Background

The plate type of the heat transfer element of the rotary air preheater is developed for decades, and the plate type of the heat transfer element which is put into engineering operation is dozens of series, wherein the common corrugated plate type can be divided into three types of DU series (corrugated plate and strip positioning corrugated plate), CU series (corrugated plate and strip flat positioning plate) and NF series (flat plate and strip flat positioning plate).

The prior art heat transfer element plates for air preheaters have the following problems: the performance of the heat transfer element of the preheater is closely related to the wave height, the pitch, the height, the inclination angle, the pressing force and the like of the heat transfer element, the change of each index can affect the performance of the heat transfer element, the stronger the heat exchange capacity of the plate type of the heat transfer element is, the larger the flow resistance of the heat transfer element is, the weaker the ash blocking resistance is, compared with the CU series, the plate type of the heat transfer element of the DU series is poor in heat exchange capacity, but the flow resistance in unit volume is small, the ash blocking resistance is strong, and compared with the CU series, the plate type of the DU series and the CU series, the plate type of the heat.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat transfer element board for air heater to the advantage that the board type of the different heat transfer elements who provides in solving above-mentioned background art has is different, also has respective defect, and the comprehensive effect is not good enough problem.

In order to achieve the above object, the utility model provides a following technical scheme: a heat transfer element board for air heater, including wave plate and locating plate, the wave plate is installed to the front end of locating plate, the inside first ash chute that leads to that is provided with of front end outer wall of wave plate, the inside ripple groove an that is provided with of wave plate front end outer wall of first ash chute right-hand member that leads to, the inside first flue gas passageway that is provided with of wave plate front end outer wall of first ash chute left end, the inside second ash chute that leads to that is provided with of front end outer wall of locating plate, the inside second flue gas passageway that is provided with of locating plate front end outer wall of second ash chute right-hand member, the inside ripple groove b that is provided with of locating plate front end outer wall of second ash chute left end.

Preferably, the corrugated groove b in the front end of the positioning plate and the second flue gas channel are crossed in a herringbone mode, and the included angle between the corrugated groove b and the second flue gas channel is one hundred twenty degrees.

Preferably, the positioning plate and the corrugated plate are identical in size and shape, and one half of diagonal grains of the positioning plate and the corrugated plate are crossed at sixty degrees and the other half of diagonal grains of the positioning plate and the corrugated plate are parallel.

Preferably, the outer walls of the positioning plate and the corrugated plate are smooth walls, and the positioning plate and the corrugated plate are formed by rolling thin steel plates.

Compared with the prior art, the utility model provides a heat transfer element board for air heater possesses following beneficial effect:

the utility model relates to a adapt to the operational requirement of denitration unit air heater, further improve the heat transfer effect of heat transfer element, reduce circulation resistance, design locating plate and the corrugated plate of different forms, new board type has better heat transfer effect, it is little to have circulation resistance simultaneously, the characteristics of not stifled grey, improve product performance on the one hand, the development of new board type of heat transfer element needs to consider heat transfer effect, circulation resistance and anti-grey performance three factor simultaneously, adopt the heat transfer element that heat transfer effect is good can reduce manufacturing cost, but circulation resistance is big, heat transfer element is easy to deposit grey, cause the running cost to rise, the novel HE11 heat transfer element is every to comprise two the same locating plates with the ripple, every locating plate twill part is 60 degrees direction and intersects, half of the twill of two plates is 60 degrees and intersects half and parallels, the novel HE11 board type has the characteristics of good heat transfer effect, circulation resistance is little, not only can effectively reduce boiler exhaust gas temperature, improve boiler efficiency, make the contribution for energy saving and emission reduction, can also reduce air heater's total weight, reduce our company's cost, improve our company trade competitiveness, make rotary air heater's result of use better through this novel heat transfer element board for air heater.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

FIG. 1 is a schematic perspective view of a heat transfer element plate for an air preheater according to the present invention;

FIG. 2 is a schematic front view of a partial cross-sectional structure of a heat transfer element plate for an air preheater according to the present invention;

in the figure: 1. a corrugated plate; 2. a first flue gas channel; 3. a first ash through groove; 4. a corrugated groove a; 5. a second flue gas channel; 6. a second ash through groove; 7. a corrugated groove b; 8. and (7) positioning the plate.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a heat transfer component board for air heater, including wave plate 1 and locating plate 8, wave plate 1 is installed to the front end of locating plate 8, there is two to five zero gaps between zero point between locating plate 8 and the wave plate 1 at the interval, gapped messenger's air circulation is more smooth and easy, when operation, under the air current is washed, the heat transfer component piece is in the state of shaking all the time, make the great ash of granule effectively pass through the preheater, more conveniently heat transfer, locating plate 8 and wave plate 1's size shape is unanimous, locating plate 8 and wave plate 1's twill half are sixty degree and cross and second half parallel, locating plate 8 and wave plate 1 of different forms, better heat transfer effect has, it is little to have the circulation resistance simultaneously, the characteristics of not stifled ash, improve product performance on the one hand, on the other hand reduce product cost, increase market competitiveness, the outer wall of locating plate 8 and wave plate 1 is smooth, the positioning plate 8 and the corrugated plate 1 are both formed by rolling thin steel plates, so that the positioning plate 8 and the corrugated plate 1 are high in overall heat resistance and not prone to deformation when heated, a first ash through groove 3 is formed in the inner portion of the outer wall of the front end of the corrugated plate 1 at the right end of the first ash through groove 3, a corrugated groove a4 is formed in the inner portion of the outer wall of the front end of the corrugated plate 1 at the left end of the first ash through groove 3, a first flue gas channel 2 is formed in the inner portion of the outer wall of the front end of the positioning plate 8, a second ash through groove 6 is formed in the inner portion of the outer wall of the front end of the positioning plate 8 at the right end of the second ash through groove 6, a corrugated groove b7 is formed in the inner portion of the outer wall of the front end of the positioning plate 8 at the left end of the second ash through groove 6, the corrugated groove b7 and the second flue gas channel 5 in the inner portion of the front end of the positioning plate 8 are crossed in a, The pitch, height, inclination angle, pressing force and the like are closely related, and the performance of the element adopting the cross angle is best combined.

The utility model discloses a theory of operation and use flow: the utility model discloses install the back, the utility model discloses a principle that is used for air heater's heat transfer element board is the wave height through changing the component, the pitch, to high, inclination and packing force isoparametric, change surface ripple's density and angle of inclination etc. with the board type when not influencing its self heat transfer performance, with original defect minimizing, further improve heat transfer element's heat transfer effect, reduce circulation resistance, when using, after the flue gas gets into air heater, heat transfer element inside the heating rotor, the rotor turns to the air side after, the heat release of taking on wave form board 1 and the locating plate 8 of heat transfer element inside is for the air of the rotor of flowing through, the rotor is rotatory in succession, heat transfer process also lasts.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A heat transfer element plate for an air preheater comprising a corrugated plate (1) and a positioning plate (8), characterized in that: wave plate (1) is installed to the front end of locating plate (8), the inside first grey groove (3) that leads to that is provided with of front end outer wall of wave plate (1), the inside corrugated groove a (4) that is provided with of wave plate (1) front end outer wall of first grey groove (3) right-hand member that leads to, the inside first flue gas passageway (2) that is provided with of wave plate (1) front end outer wall of first grey groove (3) left end, the inside second grey groove (6) that leads to that is provided with of front end outer wall of locating plate (8), locating plate (8) front end outer wall of second grey groove (6) right-hand member inside is provided with second flue gas passageway (5), locating plate (8) front end outer wall of second grey groove (6) left end inside is provided with corrugated groove b (7).

2. A heat transfer element plate for an air preheater as recited in claim 1, wherein: the corrugated groove b (7) and the second flue gas channel (5) in the front end of the positioning plate (8) are crossed in a herringbone mode, and the included angle between the corrugated groove b (7) and the second flue gas channel (5) is one hundred twenty degrees.

3. A heat transfer element plate for an air preheater as recited in claim 1, wherein: the size and the shape of the positioning plate (8) are consistent with those of the corrugated plate (1), and half of the diagonal lines of the positioning plate (8) and the corrugated plate (1) are crossed at sixty degrees and are parallel to the other half.

4. A heat transfer element plate for an air preheater as recited in claim 1, wherein: the outer walls of the positioning plate (8) and the corrugated plate (1) are smooth walls, and the positioning plate (8) and the corrugated plate (1) are formed by rolling thin steel plates.