CN219511359U

CN219511359U - Spiral-flow type flue gas heat exchanger

Info

Publication number: CN219511359U
Application number: CN202320682318.7U
Authority: CN
Inventors: 王阳; 刘明珠
Original assignee: Dalian Baoguang Energy Saving Air Conditioning Co ltd
Current assignee: Dalian Baoguang Energy Saving Air Conditioning Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-08-11
Anticipated expiration: 2033-03-30

Abstract

A spiral-flow type flue gas heat exchanger mainly comprises an inner cylinder (a flue gas inlet, an inspection port and a flue gas outlet), an outer cylinder (a cold fluid inlet and a cold fluid outlet), a cold fluid cavity is formed between the inner cylinder and the outer cylinder, a spiral supporting guide vane is arranged in the cold fluid cavity, the heat exchanger is wrapped by the outer cylinder, heat insulation cotton is supported by a support, the bottom of the heat exchanger is provided with the inspection port, an inspection cover is tightly sealed with the inspection port, the heat exchanger can be connected in parallel and is used for increasing heat exchange quantity, the flue gas generates rotational flow in the inner cavity of the heat exchanger through the flow characteristics of gas and liquid, heat exchange is carried out between the flue gas and the cold fluid in an interlayer, the flue gas outlet is arranged at the top of the heat exchanger, smooth discharge of the flow of the flue gas is facilitated, and a plurality of parallel connection devices can be installed according to actual conditions of engineering projects, such as flue gas flow, cold fluid flow, heat exchange area, heat exchange quantity and the like.

Description

Spiral-flow type flue gas heat exchanger

Technical Field

The utility model belongs to the field of flue gas heat exchange, and relates to a special heat exchanger device for flue gas waste heat recovery.

Background

The main equipment for recovering the waste heat of the flue gas is a heat exchanger, stable heat exchange is critical, and how to effectively utilize limited heat is an important means for realizing peak carbon and carbon neutralization in many cities in China. The waste heat recovery is an environment-friendly energy-saving requirement, the heat pump technology is adopted, and the heat supply/refrigeration by taking the waste heat energy of the flue gas as a heat source is one of effective ways for realizing the comprehensive utilization of the waste heat of the flue gas. The waste heat of the flue gas is recovered, the benefits of flue gas treatment and energy utilization are improved, and the requirements of 'greatly developing circular economy and constructing a saving city' are reflected. The high-temperature flue gas waste heat recovery technology is mature, the low-temperature flue gas waste heat needs to be solved, and the utility model aims to solve the problem of the low-temperature flue gas waste heat exchanger by designing a special flue gas heat exchange mode so as to achieve a good heat exchange effect.

Disclosure of Invention

According to the utility model, a cyclone type flue gas heat exchange mode is used, so that the flue gas generates cyclone flow in the inner cavity of the heat exchanger through the flow characteristics of gas and liquid, heat exchange is carried out between the flue gas and cold fluid in an interlayer, a flue gas outlet is arranged at the top of the heat exchanger, smooth discharge of the flow of the flue gas is facilitated, and a plurality of the flue gas, the cold fluid flow, the heat exchange area, the heat exchange capacity and other actual requirements can be installed in parallel according to the actual conditions of engineering projects.

The utility model is realized in such a way that the heat exchanger mainly comprises an inner cylinder (a flue gas inlet, an inspection opening and a flue gas outlet), an outer cylinder (a cold fluid inlet and a cold fluid outlet), a cold fluid cavity is formed between the inner cylinder and the outer cylinder, a spiral supporting guide vane is arranged in the cold fluid cavity, the heat exchanger outer cylinder wraps heat-insulating cotton, the heat exchanger is supported by a bracket, the bottom of the heat exchanger is provided with the inspection opening, the inspection cover is tightly sealed with the inspection opening, the heat exchanger can be connected in parallel, and the heat exchanger is connected by a flue gas shunt pipe and a cold fluid shunt pipe so as to increase heat exchange capacity.

The flue gas shunt tubes, the gas inlet tube and the gas outlet tube are the same, a plurality of connectors are respectively arranged according to fixed distances, each connector is connected with a cyclone flue gas heat exchanger, when the cyclone flue gas heat exchanger is used for supplying smoke as the flue gas shunt tubes, the flue gas inlets of the cyclone flue gas heat exchangers are connected, when the cyclone flue gas heat exchanger is used for discharging smoke as the flue gas shunt tubes, the flue gas outlets of the cyclone flue gas heat exchangers are connected, and the flue gas shunt tubes supply smoke and discharge smoke to be Cheng Binglian.

The cold fluid shunt tubes, the water inlet tube and the water outlet tube are the same, a plurality of connectors are respectively arranged according to fixed distances, each connector is connected with a cyclone flue gas heat exchanger, when cold fluid is used for supplying water, the cold fluid inlet of the cyclone flue gas heat exchanger is connected, and the cold fluid shunt tubes are used for discharging water and are connected with the cold fluid outlet of the cyclone flue gas heat exchanger.

The beneficial effects of the utility model are as follows:

1. the cyclone flue gas heat exchangers are connected in parallel and occupy small area.

2. The cyclone flue gas heat exchangers are connected in parallel, so that the heat exchange quantity can be effectively increased.

3. The flue gas pipeline and Cheng Binglian ensure that the flue gas pressure is stable, and the flow velocity and flow difference of a single cyclone flue gas heat exchanger is avoided.

Drawings

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

Fig. 2 is a front view 2 of the structure of the present utility model.

Fig. 3 is a rear cross-sectional view of the structure of the present utility model, fig. 3.

Fig. 4 is a front view 4 of the part of the present utility model.

Fig. 5 is an assembled oblique side view of the present utility model fig. 5.

As shown in: 1. outer barrel, 2 inspection cover, 3 inspection port, 4 inner barrel, 5 cold fluid inlet, 6 cold fluid outlet, 7 flue gas inlet, 8 flue gas outlet, 9 cold fluid cavity, 10 spiral support deflector, 11 flue gas cavity, 12 insulation wool, 13 flue gas shunt tube, 14 cold fluid shunt tube, 15 support bracket, 101 swirl flue gas heat exchanger, 102 flue gas shunt inlet, 103 flue gas shunt outlet, 104 cold fluid shunt inlet, 105 cold fluid shunt outlet, 110 intercept point.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

Smoke passes urceolus (1) from smoke inlet (7) and gets into inner tube (4) and rotate along section of thick bamboo inner wall tangent line, produce the whirl at smoke chamber (11), smoke temperature after the heat transfer reduces, discharge from flue gas outlet (8), urceolus (1) bottom is equipped with inspection port (3) and is used for the ash discharge maintenance, inspection port (3) are sealed through inspection lid (2), cold fluid gets into cold fluid chamber (9) by the intermediate layer formation in urceolus (1) and inner tube (4) from cold fluid inlet (5), be equipped with spiral support guide vane (12) in cold fluid chamber (9), cold fluid flows to the bottom along the guide vane spiral, discharge from cold fluid outlet (6) after the heat transfer, urceolus (1) outer wall applies heat preservation cotton (13), support frame (15) are installed to urceolus (1) bottom.

The cutoff point (110) of the spiral supporting guide vane (12) is larger than the flue gas inlet (7) pipeline in order to avoid the flue gas inlet (7) pipeline, and cold fluid can continue to flow downwards from the edge of the flue gas pipeline without being blocked.

When the spiral-flow type flue gas heat exchanger (101) is connected in parallel, a flue gas diversion inlet (102) is arranged on one side of the parallel group, a flue gas diversion outlet (103) is arranged on the other side of the parallel group, the same Cheng Binglian is formed, the direction of a cold fluid diversion inlet (104) and the direction of a cold fluid diversion outlet (105) are not limited, and the spiral-flow type flue gas heat exchanger is connected with the spiral-flow type sewage heat exchanger (101) through a flue gas diversion pipe (13) and a cold fluid diversion pipe (14).

The present utility model is not limited to the present embodiment, and any equivalent concept or modification within the technical scope of the present utility model is listed as the protection scope of the present utility model.

Claims

1. A spiral-flow type flue gas heat exchanger, characterized in that:

the heat exchanger comprises an inner cylinder and an outer cylinder, wherein a cold fluid cavity is formed between the inner cylinder and the outer cylinder, a spiral supporting guide vane is arranged in the cold fluid cavity, the heat exchanger is wrapped by the heat exchanger outer cylinder and is supported by a bracket, an inspection opening is formed in the bottom of the heat exchanger, an inspection cover is tightly sealed with the inspection opening, the heat exchangers can be connected in parallel, and the heat exchanger is connected through a flue gas shunt pipe and a cold fluid shunt pipe so as to increase heat exchange capacity.

2. A spiral-flow flue gas heat exchanger according to claim 1, wherein: the flue gas shunt tubes, the gas inlet tube and the gas outlet tube are the same, a plurality of connectors are respectively arranged according to fixed distances, each connector is connected with a cyclone flue gas heat exchanger, when the cyclone flue gas heat exchanger is used for supplying smoke as the flue gas shunt tubes, the flue gas inlets of the cyclone flue gas heat exchangers are connected, when the cyclone flue gas heat exchanger is used for discharging smoke as the flue gas shunt tubes, the flue gas outlets of the cyclone flue gas heat exchangers are connected, and the flue gas shunt tubes supply smoke and discharge smoke to be Cheng Binglian.

3. A spiral-flow flue gas heat exchanger according to claim 1, wherein: the cold fluid shunt tubes, the water inlet tube and the water outlet tube are the same, a plurality of connectors are respectively arranged according to fixed distances, each connector is connected with a cyclone flue gas heat exchanger, when cold fluid is used for supplying water, the cold fluid inlet of the cyclone flue gas heat exchanger is connected, and the cold fluid shunt tubes are used for discharging water and are connected with the cold fluid outlet of the cyclone flue gas heat exchanger.