CN209909954U

CN209909954U - Flue gas cooling system

Info

Publication number: CN209909954U
Application number: CN201920391625.3U
Authority: CN
Inventors: 穆云龙; 张开胜; 田杰; 朱启亮; 周家雷
Original assignee: HAIHUI GROUP CO Ltd
Current assignee: HAIHUI GROUP CO Ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-01-07
Anticipated expiration: 2029-03-26

Abstract

The utility model relates to a flue gas cooling system, which comprises a heat exchange pipe; the flue gas inlet is connected to the bottom of the heat exchange tube; the flue gas outlet is connected to the top of the heat exchange tube; the axial flow fan is connected with the flue gas inlet and the flue gas outlet and is parallel to the heat exchange tube; the smoke dust cooling system also comprises an inlet thermal resistor, an outlet thermal resistor and a control module, wherein the inlet thermal resistor and the outlet thermal resistor are respectively positioned on the smoke inlet and the smoke outlet, the control module is connected with the inlet thermal resistor, the outlet thermal resistor and the axial flow fan, and the control module is used for adjusting and controlling the temperature transmitted by the inlet thermal resistor and the outlet thermal resistor; the system is provided with an axial flow fan, a thermal resistor, a heat exchange pipe and a control module, wherein the cooling part is mainly cooled by the mutual matching of the heat exchange pipe, the axial flow fan and the thermal resistor, and the control module is mainly used for detecting the temperature of smoke through the thermal resistor, so that the on-off and the rotating speed of the axial flow fan are controlled, and the cooling of the temperature of the smoke is realized.

Description

Flue gas cooling system

Technical Field

The invention relates to the technical field of dust removal and cooling, in particular to a flue gas cooling system.

Background

When the dust remover is designed in the early stage, because the temperature of flue gas treated by a plurality of dust removers is higher, in order to protect the use of a cloth bag in the dust remover and prolong the service life of the cloth bag, only a high-temperature filter bag can be selected, thus increasing the cost; taking HMC450 bag type dust collector as an example, the difference between the items of the high temperature filter bag and the common filter bag is 450 x (90-20) yuan/piece-3.15 ten thousand yuan, and the cost of the large dust collector increases more and more when the large dust collector moves to ten thousand filter bags.

Disclosure of Invention

The invention is provided for solving the problems in the prior art, and aims to reduce the cost of dust removal equipment by adding a flue gas cooling system in front of a flue gas inlet of a dust remover and utilizing natural wind to carry out heat exchange and temperature reduction on overhigh temperature flowing through a flue.

A flue gas cooling system comprises a heat exchange pipe; the flue gas inlet is connected to the bottom of the heat exchange tube; the flue gas outlet is connected to the top of the heat exchange tube; the axial flow fan is connected with the flue gas inlet and the flue gas outlet and is parallel to the heat exchange tube; the smoke dust cooling system further comprises an inlet thermal resistor, an outlet thermal resistor and a control module, wherein the inlet thermal resistor and the outlet thermal resistor are respectively located on the smoke inlet and the smoke outlet, the control module is connected with the inlet thermal resistor, the outlet thermal resistor and the axial flow fan, and the control module is used for adjusting and controlling the temperature transmitted by the inlet thermal resistor and the outlet thermal resistor and used for controlling the axial flow fan.

Preferably, the flue gas outlet is provided with a gas outlet end and a connecting end, the gas outlet end is of a circular truncated cone structure, the gas outlet end is provided with a gas outlet, and the gas outlet is positioned on the side surface of the circular truncated cone structure; the connecting end is provided with a first connecting frame used for connecting the axial flow fan.

Preferably, the flue gas inlet is the inverted round platform structure, the flue gas inlet is equipped with the air inlet and connects the dirt end, the air inlet is located the side of inverted round platform structure, connect the dirt end to be located the bottom of flue gas inlet for accept the particulate matter.

Preferably, the flue gas cooling system further comprises a support frame, the support frame is located at the bottom of the heat exchange tube and is parallel to the flue gas inlet, and the support frame is provided with a second connecting frame for supporting the axial flow fan.

Preferably, the first connecting frame is provided with a first transverse end and a vertical end, the first transverse end is perpendicular to the vertical end, and the vertical end is provided with an axial flow fan mounting position for mounting the axial flow fan.

Preferably, the second connecting frame is provided with a second transverse end and an inclined end, and the inclined end is connected with the supporting frame and used for fixing and supporting the axial flow fan.

Preferably, the dust collecting end is provided with a detachable bottom cover for unloading the particulate matters.

The utility model discloses a flue gas cooling system, this system are equipped with axial fan, thermal resistance, hot exchange pipe and control module, and the cooling part is mainly mutually supported by hot exchange pipe, axial fan and thermal resistance and cools off, and control module is mainly through the temperature that the thermal resistance detected the flue gas to control axial fan's switch and rotational speed realize the cooling of flue gas temperature.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals:

1 heat exchange tube; 2, a flue gas inlet, 21 an air inlet and 22 a dust collecting end; 3, a smoke outlet, a 31 air outlet end, a 32 connecting end and a 321 first connecting frame; 4, an axial flow fan; 5 an inlet thermal resistor; 6 an outlet thermal resistor; 7, a control module; 8 support frames and 81 second connecting frames.

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.

The utility model discloses an embodiment: referring to fig. 1, a flue gas cooling system comprises a heat exchange tube 1, a flue gas inlet 2, a flue gas outlet 3, an axial flow fan 4, an inlet thermal resistor 5, an outlet thermal resistor 6, a control module 7 and a support frame 8, wherein the cooling device is composed of the heat exchange tube 1, the axial flow fan 4, the inlet thermal resistor 5 and the outlet thermal resistor 6, the control module 7 is mainly composed of a frequency converter and a PLC control system, the top and the bottom of the heat exchange tube 1 are respectively provided with the flue gas inlet 2 and the flue gas outlet 3, the bottom of the flue gas inlet 2 is provided with a dust receiving end 22, flue gas enters from the lower part and exits from the higher part, and a part of dust can be naturally separated by gravity and falls to the dust receiving end, so that; the flue gas inlet 2 and the flue gas outlet 3 are respectively provided with an inlet thermal resistor 5 and an outlet thermal resistor 6, the bottom of the flue gas outlet 3 is provided with a connecting end 32 connected with the axial flow fan 4, one end of the support frame 8 is also provided with a second connecting support 81 connected with the axial flow fan 4, and the axial flow fan 4 is parallel to the heat exchange tube 1.

The utility model discloses a working method: the flue gas passes through the heat exchange tube 1 from bottom to top, the axial flow fan 4 blows natural cold air to exchange heat and cool the overhigh temperature flowing in the flue, the temperature of the flue gas is detected through the inlet thermal resistor 5 and the outlet thermal resistor 6, temperature signals are transmitted to the PLC control system, the PLC program compares the flue gas outlet temperature T1, namely the outlet thermal resistor 6, with the set starting temperature T2 of the axial flow fan 4, namely the PLC setting parameter, with the stopping temperature T3 and the PLC setting parameter, when T1 is more than T2, the axial flow fan 4 is started, and when T1 is less than T3, the axial flow fan 4 is stopped; in the operation process of the axial flow fan 4, the PLC program compares the flue gas inlet temperature T0, namely the inlet thermal resistance 5 with the preset cooling target temperature T4 and PLC setting parameters, then the PLC adjusts the rotating speed of the axial flow fan 4 through the frequency converter, the larger the temperature difference between the T0 and the T4 is, the faster the axial flow fan 4 runs, and therefore automatic cooling of the flue gas temperature is achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 flue gas cooling system comprising a heat exchange tube (1); the flue gas inlet (2) is connected to the bottom of the heat exchange tube (1); the flue gas outlet (3) is connected to the top of the heat exchange tube (1); the axial flow fan (4) is connected with the flue gas inlet (2) and the flue gas outlet (3) and is parallel to the heat exchange tube (1); the smoke dust cooling system is characterized by further comprising an inlet thermal resistor (5), an outlet thermal resistor (6) and a control module (7), wherein the inlet thermal resistor (5) and the outlet thermal resistor (6) are respectively located on the smoke inlet (2) and the smoke outlet, the control module (7) is connected with the inlet thermal resistor (5), the outlet thermal resistor (6) and the axial flow fan (4), and the control module (7) is used for adjusting and controlling the temperature transmitted by the inlet thermal resistor (5) and the outlet thermal resistor (6) to adjust and control the axial flow fan (4).

2. The flue gas cooling system according to claim 1, wherein the flue gas outlet (3) is provided with a gas outlet end (31) and a connecting end (32), the gas outlet end (31) is of a circular truncated cone structure, and the gas outlet end (31) is provided with a gas outlet which is located on the side surface of the circular truncated cone structure; the connecting end (32) is provided with a first connecting frame (321) for connecting the axial flow fan (4).

3. A flue gas cooling system according to claim 1, wherein the flue gas inlet (2) is of an inverted circular truncated cone structure, the flue gas inlet (2) is provided with a gas inlet (21) and a dust collecting end (22), the gas inlet (21) is located at the side of the inverted circular truncated cone structure, and the dust collecting end (22) is located at the bottom of the flue gas inlet (2) for receiving particulate matter.

4. A flue gas cooling system according to claim 1, further comprising a support frame (8), wherein the support frame (8) is located at the bottom of the heat exchange tube (1) and is parallel to the flue gas inlet (2), and the support frame (8) is provided with a second connection frame (81) for supporting the axial flow fan (4).

5. A flue gas cooling system according to claim 2, wherein the first connecting frame (321) is provided with a first transverse end and a vertical end, the first transverse end and the vertical end are perpendicular, and the vertical end is provided with an axial flow fan mounting position for mounting the axial flow fan (4).

6. A flue gas cooling system according to claim 4, wherein the second connection frame (81) is provided with a second transverse end and a slanted end, the slanted end being connected to the support frame (8) for fixing and supporting the axial flow fan (4).

7. A flue gas cooling system according to claim 3, wherein the dust collecting end (22) is provided with a detachable bottom cover for unloading particulate matter.