CN213362540U

CN213362540U - High-low temperature two-section plate type air preheater

Info

Publication number: CN213362540U
Application number: CN202022276595.7U
Authority: CN
Inventors: 许军波
Original assignee: Hangzhou Funeng Energy Technology Co ltd
Current assignee: Hangzhou Funeng Energy Technology Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-06-04
Anticipated expiration: 2030-10-14

Abstract

The utility model discloses a high-low temperature two-section plate type air preheater, which comprises a circulating pipeline and a box body, wherein the circulating pipeline is arranged at the left end of the box body, a smoke inlet is arranged on the outer wall of the front end of the box body, a smoke outlet is arranged on the outer wall of the front end of the left box body of the smoke inlet, a baffle is arranged inside the box body, an aluminum silicate fiber blanket is arranged inside the outer wall of the front end of the baffle, a cover plate is arranged on the outer wall of the right end of the box body, and a group of air inlet and outlet is additionally arranged on the air preheater by designing a novel high-low temperature two-section plate type air preheater, so that the part with more heat content at the front end of the preheater has strong heating capacity to air, the heat content of the air discharged after being heated from the front end is high, the temperature is relatively high, the heat content of the air discharged from, so that the high and low temperature air does not further fuse.

Description

High-low temperature two-section plate type air preheater

Technical Field

The utility model belongs to the technical field of air heater is relevant, concretely relates to two sections plate-type air heater of high low temperature.

Background

The air preheater is a heating surface for preheating air before entering the boiler to a certain temperature by smoke in a flue at the tail part of the boiler through internal radiating fins, and is equipment for improving the heat exchange performance of the boiler and reducing energy consumption.

The prior air preheater technology has the following problems: the existing air preheater generally only has one air inlet and one air outlet, but the length of a heating pipeline inside the air preheater is longer, the heat quantity at the front end part is more, the air temperature capable of being heated is higher, but the heat quantity from most of the absorbed heat to the preheater close to the rear end is less, the heat conversion efficiency to the air is low, the heat quantity of the heated air is different, and the air is not convenient to discharge from the same air outlet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two sections plate air heater of high low temperature to the air heater front and back end heat that proposes in solving above-mentioned background art is inhomogeneous, and is inequality to the thermal conversion efficiency of air, follows the not good enough problem of same gas outlet exhaust air effect.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a two sections board-like air heater of high low temperature, includes circulating line and box, the circulating line is installed to the left end of box, be provided with the flue gas entry on the front end outer wall of box, be provided with the exhanst gas outlet on the left box front end outer wall of flue gas entry, the inside of box is provided with the baffle, the inside aluminum silicate fiber blanket that is provided with of front end outer wall of baffle, be provided with the apron on the right-hand member outer wall of box, be provided with the second air inlet on the box right-hand member outer wall of apron front side, be provided with the low temperature gas outlet on the box right-hand member outer wall of second air inlet downside, be provided with first air inlet on the box right-hand member outer wall of second air inlet front.

Preferably, the calibers of the first air inlet and the second air inlet are the same, and the calibers of the high-temperature air outlet and the low-temperature air outlet are the same.

Preferably, the heat-insulating layer is sleeved outside the box body, and the thickness of the heat-insulating layer is sixty millimeters.

Preferably, a partition board is arranged at the center of the circulating pipeline, and the partition board divides the circulating pipeline into a front part and a rear part.

Preferably, a connecting frame is arranged on the outer wall of the right end of the first air inlet, a connecting port is arranged inside the outer wall of the right end of the connecting frame, and the first air inlet and the connecting frame are fixedly connected in a welding mode.

Preferably, a connecting nut is arranged on the outer wall of the right end of the cover plate, the outer wall of the left end of the connecting nut penetrates through the cover plate and is arranged inside the box body, and the cover plate is in threaded connection with the box body through the connecting nut.

Compared with the prior art, the utility model provides a two sections plate air heater of high low temperature possesses following beneficial effect:

the utility model designs a novel high-low temperature two-section plate type air preheater, a group of air inlet and outlet is additionally arranged on the air preheater, thus the part with more heat content at the front end of the preheater has strong heating capacity to the air, the heat content of the air discharged from the front end is high, the temperature is relatively high, the heat content of the air discharged from the rear end of the preheater is low, the temperature is relatively low, the high-low temperature air is separated by a baffle when circulating in the waste heat device, so that the high-low temperature air can not be further fused, the high-low temperature air can be effectively separated, the air discharged from the air preheater can be divided into two groups of high temperature and low temperature, the waste heat generated by a boiler is fully utilized to heat the air, the energy required by heating the air is saved, the normal use of the air preheater can not be influenced, the air with different temperatures after heating can be used in, through this novel two sections plate air heater of high low temperature make the heating to the air use more convenient.

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 view of a three-dimensional structure of a high-low temperature two-section plate type air preheater provided by the utility model;

fig. 2 is a schematic side structural view of a high-low temperature two-section plate type air preheater provided by the present invention;

fig. 3 is a schematic diagram of a front cross-sectional structure of a high-low temperature two-section plate type air preheater provided by the utility model.

In the figure: 1. a circulation pipe; 2. a first air inlet; 3. a box body; 4. a second air inlet; 5. a cover plate; 6. a low temperature gas outlet; 7. a high-temperature air outlet; 8. a baffle plate; 9. a flue gas inlet; 10. a flue gas outlet; 11. an aluminum silicate fiber blanket.

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. 1-3, the present invention provides a technical solution: a high-low temperature two-section plate type air preheater comprises a circulating pipeline 1 and a box body 3, wherein the circulating pipeline 1 is installed at the left end of the box body 3, a heat preservation layer is sleeved outside the box body 3, the thickness of the heat preservation layer is sixty millimeters, the heat dissipation inside the box body 3 can be effectively reduced through the heat preservation layer, the heat preservation effect on the box body 3 is achieved, a partition plate is arranged at the center of the circulating pipeline 1 and divides the circulating pipeline 1 into a front part and a rear part, so that the temperature cross-over of two groups of high-low temperature air can be prevented when the air is heated and circulated, a flue gas inlet 9 is arranged on the outer wall of the front end of the box body 3, a flue gas outlet 10 is arranged on the outer wall of the front end of the box body 3 on the left side of the flue gas inlet 9, a baffle plate 8 is arranged inside the box body 3, an aluminum silicate fiber blanket 11, the left end outer wall of the connecting nut penetrates through the cover plate 5 and is arranged inside the box body 3, the cover plate 5 and the box body 3 are in screw connection through the connecting nut, the cover plate 5 can be conveniently opened through the connecting nut to inspect the internal environment of the box body 3, the right end outer wall of the box body 3 at the front side of the cover plate 5 is provided with a second air inlet 4, the right end outer wall of the box body 3 at the lower side of the second air inlet 4 is provided with a low-temperature air outlet 6, the right end outer wall of the box body 3 at the front side of the second air inlet 4 is provided with a first air inlet 2, the right end outer wall of the first air inlet 2 is provided with a connecting frame, a connecting port is arranged inside the right end outer wall of the connecting frame, the first air inlet 2 and the connecting frame are fixedly connected in a welding mode, the first air inlet 2 can be conveniently connected with an external air, the calibers of the first air inlet 2 and the second air inlet 4 are the same, the calibers of the high-temperature air outlet 7 and the low-temperature air outlet 6 are the same, and the same calibers can ensure that the inlet and outlet efficiency of high-temperature air and the outlet efficiency of low-temperature air are the same.

The utility model discloses a theory of operation and use flow: after the utility model is installed, the working principle of the high-low temperature two-section plate type air preheater is that high-temperature flue gas is introduced into the box body 3, unheated air is introduced into the box body 3, heat in the flue gas is absorbed by air and the air is filtered and then discharged, the flue gas waste heat is fully utilized, when in use, the flue gas inlet 9 and the flue gas outlet 10 are connected with an external flue gas pipeline, the air inlet and the air outlet are connected with an external input and output pipeline, the high-temperature flue gas enters the box body 3 and contacts with the unheated air to transfer the heat to the air, the air is circulated for a circle through the circulating pipeline 1 in the box body 3 and then is discharged from the box body 3 through the air outlet, the high-temperature air at the front end part of the box body 3 is discharged from the high-temperature air outlet 7, and the low-temperature air at the rear end part of the box body 3, transported by different pipelines for use.

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. The utility model provides a two sections plate air heater of high low temperature, includes circulating line (1) and box (3), its characterized in that: a circulating pipeline (1) is arranged at the left end of the box body (3), a smoke inlet (9) is arranged on the outer wall of the front end of the box body (3), a smoke outlet (10) is arranged on the outer wall of the front end of the box body (3) at the left side of the smoke inlet (9), a baffle (8) is arranged inside the box body (3), an aluminum silicate fiber blanket (11) is arranged inside the outer wall of the front end of the baffle (8), a cover plate (5) is arranged on the outer wall of the right end of the box body (3), a second air inlet (4) is arranged on the outer wall of the right end of the box body (3) at the front side of the cover plate (5), a low-temperature air outlet (6) is arranged on the outer wall of the right end of the box body (3) at the lower side of the second air inlet (4), a first air inlet (2) is arranged on the outer wall of the right end of the box body (3) at the front side of the second air inlet (4), and a high-temperature air outlet (7) is formed in the outer wall of the right end of the box body (3) on the lower side of the first air inlet (2).

2. A high and low temperature two stage plate air preheater according to claim 1, wherein: the calibers of the first air inlet (2) and the second air inlet (4) are the same, and the calibers of the high-temperature air outlet (7) and the low-temperature air outlet (6) are the same.

3. A high and low temperature two stage plate air preheater according to claim 1, wherein: the heat-insulating layer is sleeved outside the box body (3), and the thickness of the heat-insulating layer is sixty millimeters.

4. A high and low temperature two stage plate air preheater according to claim 1, wherein: the center of the circulating pipeline (1) is provided with a partition board, and the partition board divides the circulating pipeline (1) into a front part and a rear part.

5. A high and low temperature two stage plate air preheater according to claim 1, wherein: the air inlet structure is characterized in that a connecting frame is arranged on the outer wall of the right end of the first air inlet (2), a connector is arranged inside the outer wall of the right end of the connecting frame, and the first air inlet (2) is fixedly connected with the connecting frame in a welding mode.

6. A high and low temperature two stage plate air preheater according to claim 1, wherein: the connecting structure is characterized in that a connecting nut is arranged on the outer wall of the right end of the cover plate (5), the outer wall of the left end of the connecting nut penetrates through the cover plate (5) and is arranged inside the box body (3), and the cover plate (5) and the box body (3) are in threaded connection through the connecting nut.