CN210601708U

CN210601708U - Preheater with high heat exchange efficiency

Info

Publication number: CN210601708U
Application number: CN201920964560.7U
Authority: CN
Inventors: 曾君国; 邹波; 林廷全; 王心伟
Original assignee: Sichuan Xingchuanyu Cement Co ltd
Current assignee: Sichuan Xingchuanyu Cement Co ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-05-22
Anticipated expiration: 2029-06-25

Abstract

The utility model discloses a pre-heater that heat exchange efficiency is high, including the preheating cabinet, one side fixed mounting of preheating cabinet has the mounting panel, and the top fixed mounting of mounting panel has the air-blower, and one side excavation that the preheating cabinet is close to the air-blower has the cold air entry, the output and the cold air entry fixed connection of air-blower, one side fixed mounting that the cold air entry kept away from the air-blower have the spiral duct, and one side excavation that the cold air entry was kept away from to the preheating cabinet has the cold air export, and the one end and the cold air export fixed connection that the cold air entry was kept away from to the spiral duct have the cold air discharge pipe, one side fixed mounting that the spiral duct was kept away from in the cold: the utility model discloses used spiral duct, made the time that cold air stops in the pre-heater longer, the heat that obtains is higher, has increased the area of contact of cold air with the tuber pipe simultaneously, and the heat that makes the cold air trade get in the same time is more.

Description

Preheater with high heat exchange efficiency

Technical Field

The utility model relates to a pre-heater field specifically is a pre-heater that heat exchange efficiency is high.

Background

The air preheater is characterized in that flue gas in a flue at the tail of the boiler is utilized to preheat air before entering the boiler to a heating surface with a certain temperature through an internal radiating fin, so that the heat exchange performance of the boiler is improved, the energy consumption is reduced, and the air preheater is generally called as an air preheater for short and is mainly used for coal-fired boilers.

However, most of the existing preheaters have poor heat exchange efficiency, and no heat is used to the maximum, so that the waste of resources is caused, and the consumption of fuel is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pre-heater that heat exchange efficiency is high to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a preheater with high heat exchange efficiency comprises a preheating box, wherein a mounting plate is fixedly mounted on one side of the preheating box, an air blower is fixedly mounted on the top of the mounting plate, a cold air inlet is drilled on one side of the preheating box, which is close to the air blower, an output end of the air blower is fixedly connected with the cold air inlet, a spiral air pipe is fixedly mounted on one side of the cold air inlet, which is far away from the air blower, a cold air outlet is drilled on one side of the preheating box, which is far away from the cold air inlet, a cold air discharge pipe is fixedly connected with one end of the spiral air pipe, which is far away from the cold air inlet, a hot air inlet is drilled on one side of the preheating box and is located above the cold air inlet, a hot air inlet pipe is fixedly mounted on one side of the hot air inlet, which is far away from the preheating box, and an electric valve is fixedly mounted on, the preheating device is characterized in that a hot air outlet is fixedly arranged on one side of the preheating box and above the cold air outlet, a hot air discharge pipe is fixedly arranged on one side of the hot air outlet, which is far away from the preheating box, an upper guide plate is fixedly arranged at the top of the inner wall of the preheating box, a lower guide plate is fixedly arranged at the bottom of the inner part of the preheating box, and a temperature sensor is fixedly arranged at the top of the inner wall of the preheating box.

Preferably, a thermometer is fixedly installed on one side of the preheating box.

Preferably, a control panel is fixedly mounted on one side of the preheating box, and the blower, the electric valve and the temperature sensor are all electrically connected with the control panel.

Preferably, a support frame is fixedly arranged at the bottom of the preheating box.

Preferably, the inner wall of the preheating box is paved with a heat-insulating layer made of a foamed polyurethane material.

Preferably, the spiral duct is made of copper.

Preferably, the spiral wind pipes are distributed along the upper guide plate and the lower guide plate in an S-shaped track.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses used spiral duct, made the time that cold air stops in the pre-heater longer, the heat that obtains is higher, has increased the area of contact of cold air with the tuber pipe simultaneously, and the heat that makes the cold air trade get in the same time is more.

2. The utility model discloses thermal insulation material has been laid to the preheating cabinet inside, makes the heat not leak, has reduced the loss on the heat, has practiced thrift the resource.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a side cross-sectional view of the present invention;

fig. 3 is a top cross-sectional view of the present invention.

In the figure: 1. a preheating box; 2. mounting a plate; 3. a blower; 4. a cool air inlet; 5. a spiral duct; 6. a cool air outlet; 7. a cool air discharge duct; 8. a hot air inlet; 9. a hot air inlet duct; 10. An electrically operated valve; 11. a hot air discharge port; 12. a hot air discharge duct; 13. an upper deflector; 14. a lower deflector; 15. a temperature sensor; 16. a thermometer; 17. a control panel; 18. a support frame.

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 preheater with high heat exchange efficiency comprises a preheating box 1, wherein a mounting plate 2 is fixedly mounted on one side of the preheating box 1, an air blower 3 is fixedly mounted at the top of the mounting plate 2, a cold air inlet 4 is drilled on one side of the preheating box 1 close to the air blower 3, the output end of the air blower 3 is fixedly connected with the cold air inlet 4, a spiral air pipe 5 is fixedly mounted on one side of the cold air inlet 4 far away from the air blower 3, a cold air outlet 6 is drilled on one side of the preheating box 1 far away from the cold air inlet 4, one end of the spiral air pipe 5 far away from the cold air inlet 4 is fixedly connected with the cold air outlet 6, a cold air discharge pipe 7 is fixedly mounted on one side of the cold air outlet 6 far away from the spiral air pipe 5, a hot air inlet 8 is drilled on one side of the preheating box 1 and above the cold air inlet 4, and a hot air inlet pipe 9 is, the top fixed mounting of hot-air admission pipe 9 has motorised valve 10, be used for controlling the injection of hot-air with close the injection, preheating cabinet 1 one side and the top fixed mounting who is located cold air outlet 6 have hot-air outlet 11, one side fixed mounting that preheating cabinet 1 was kept away from to hot-air outlet 11 has hot-air discharge pipe 12, the top fixed mounting of preheating cabinet 1 inner wall has guide plate 13, the inside bottom fixed mounting of preheating cabinet 1 has lower guide plate 14, the top fixed mounting of preheating cabinet 1 inner wall has temperature sensor 15, temperature sensor 15's model is PT 100.

A thermometer 16 is fixedly arranged on one side of the preheating box 1, so that the temperature in the preheating box 1 can be detected, and the temperature information can be conveniently mastered; a control panel 17 is fixedly installed on one side of the preheating box 1, the blower 3, the electric valve 10 and the temperature sensor 15 are all electrically connected with the control panel 17, and the preheater can be directly controlled through the control panel 17, so that the use of the preheater is facilitated; the bottom of the preheating box 1 is fixedly provided with a support frame 18, so that the preheater is more stable when placed; the inner wall of the preheating box 1 is paved with a heat-insulating layer made of a foamed polyurethane material for locking the temperature in the preheating box 1, so that the heat is not lost, and the resources are saved; the spiral air pipe 5 is made of copper, and the copper has high heat conductivity and can exchange heat more quickly; the spiral air pipe 5 is distributed along the upper guide plate 13 and the lower guide plate 14 in an S-shaped track, so that the contact time of cold air and hot air is prolonged, and the heat exchange efficiency is improved.

Specifically, use the utility model discloses the time, at first, utilize control panel 17 to control motorised valve 10 and open, inject hot-air into 1 inside the preheating cabinet, temperature sensor 15 receives the signal that the temperature rises afterwards, inside with information transmission to control panel 17, control panel 17 controls air-blower 3 work immediately, inject cold air into 5 insides of spiral duct, under the guide of upper guide plate 13 and lower guide plate 14, hot-air and cold air are along the same orbital motion, in the motion process, hot-air attaches to the heat on spiral duct 5, the cold air asks for the heat from spiral duct 5 simultaneously, accomplish the exchange to the heat at this in-process, after the heat transfer is accomplished, cold-air is discharged from cold air discharge pipe 7, hot-air is discharged from hot air discharge pipe 12.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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 pre-heater that heat exchange efficiency is high, includes preheating cabinet (1), its characterized in that: one side of the preheating box (1) is fixedly provided with a mounting plate (2), the top of the mounting plate (2) is fixedly provided with an air blower (3), one side of the preheating box (1) close to the air blower (3) is provided with a cold air inlet (4), the output end of the air blower (3) is fixedly connected with the cold air inlet (4), one side of the cold air inlet (4) far away from the air blower (3) is fixedly provided with a spiral air pipe (5), one side of the preheating box (1) far away from the cold air inlet (4) is provided with a cold air outlet (6), one end of the spiral air pipe (5) far away from the cold air inlet (4) is fixedly connected with the cold air outlet (6), one side of the cold air outlet (6) far away from the spiral air pipe (5) is fixedly provided with a cold air discharge pipe (7), one side of the preheating box (1) and above the cold air inlet (4) is provided with a hot air inlet (8), one side fixed mounting that preheating cabinet (1) was kept away from in hot-air inlet (8) has hot-air admission pipe (9), the top fixed mounting of hot-air admission pipe (9) has motorised valve (10), the top fixed mounting that preheating cabinet (1) one side just is located cold air export (6) has hot-air discharge port (11), one side fixed mounting that preheating cabinet (1) was kept away from in hot-air discharge port (11) has hot-air discharge pipe (12), the top fixed mounting of preheating cabinet (1) inner wall has guide plate (13), the inside bottom fixed mounting of preheating cabinet (1) has lower guide plate (14), the top fixed mounting of preheating cabinet (1) inner wall has temperature sensor (15).

2. A preheater with high heat exchange efficiency as recited in claim 1, wherein: and a thermometer (16) is fixedly arranged on one side of the preheating box (1).

3. A preheater with high heat exchange efficiency as recited in claim 1, wherein: one side fixed mounting of preheating cabinet (1) has control panel (17), air-blower (3), motorised valve (10) and temperature sensor (15) all with control panel (17) electric connection.

4. A preheater with high heat exchange efficiency as recited in claim 1, wherein: and a support frame (18) is fixedly arranged at the bottom of the preheating box (1).

5. A preheater with high heat exchange efficiency as recited in claim 1, wherein: and a heat-insulating layer made of foamed polyurethane material is laid on the inner wall of the preheating box (1).

6. A preheater with high heat exchange efficiency as recited in claim 1, wherein: the spiral air pipe (5) is made of copper.

7. A preheater with high heat exchange efficiency as recited in claim 1, wherein: the spiral air pipes (5) are distributed along an S-shaped track along the upper guide plate (13) and the lower guide plate (14).