CN218626921U

CN218626921U - Flue gas temperature recycling system

Info

Publication number: CN218626921U
Application number: CN202223213229.2U
Authority: CN
Inventors: 刘晔; 吉建; 谈科君; 王艳博
Original assignee: Suzhou Aokangweishi Biotechnology Co ltd
Current assignee: Suzhou Aokangweishi Biotechnology Co ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-03-14
Anticipated expiration: 2032-12-01

Abstract

A flue gas temperature recycling system comprises a main flue gas exhaust pipeline, a flue gas direct exhaust branch and a flue gas heat recovery branch. The inlet of the main smoke exhaust pipeline is connected with the top of the boiler, and the outlet of the main smoke exhaust pipeline is respectively connected with the direct smoke exhaust branch and the smoke heat recovery branch through valves. The flue gas heat recovery branch is wound with a first heat exchange pipeline which is spirally attached to the surface of the flue gas heat recovery branch and is provided with a water inlet and a water outlet. The boiler is wound with a second heat exchange pipeline which is spirally attached to the surface of the boiler and is provided with a water inlet and a water outlet. The water inlet of the second heat exchange pipeline is communicated with the water outlet of the first heat exchange pipeline. The utility model discloses can gather again and utilize the heat energy in the high temperature flue gas for secondary to the boiler keeps warm, still can be used to do the heat exchange to the equipment of heat transfer, and be used as the return water of boiler, thereby effectively delay thermal loss, reduce resource consumption, promote resource utilization, reach the purpose of the energy can be saved.

Description

Flue gas temperature recycling system

Technical Field

The utility model relates to a technical field that heat energy was recycled, concretely relates to flue gas temperature recycle system.

Background

The boiler is used for heating liquid medicine and sterilizing a tank body of the pharmaceutical equipment; providing a heat source of heat exchange equipment; the cavity of the sterilizing equipment is heated, and the like, and the main components of the generated smoke are as follows: carbon dioxide, nitrogen, water vapor, and the like.

In the prior art, the flue gas of a boiler is connected through a pipeline and directly discharged to the outside. The discharged flue gas has high temperature, the equipment temperature loss is high, the flue gas discharge temperature can reach 200-250 ℃, the targets of sustainable development and ecological environmental protection are not met, and the method is optimized by taking the aims of realizing the cyclic efficient utilization of resources, reducing the discharge amount of pollutants and saving fuel resources. The generated flue gas exchanges heat by a heat tracing pipeline and can be used as a source of primary side heat of a hot water heat exchange system or a heat preservation energy source of self equipment of a boiler.

Therefore, the present invention is to solve the above-mentioned deficiencies of the prior art and to provide a solution to the problems.

Disclosure of Invention

The utility model aims at providing a flue gas temperature recycle system.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a flue gas temperature recycling system comprises a main flue gas discharging pipeline, a flue gas direct discharging branch and a flue gas heat recycling branch;

the inlet of the main smoke exhaust pipeline is connected with the top of the boiler, and the outlet of the main smoke exhaust pipeline is respectively connected with the direct smoke exhaust branch and the smoke heat recovery branch through valves;

the flue gas heat recovery branch is wound with a first heat exchange pipeline, the first heat exchange pipeline is spirally attached to the surface of the flue gas heat recovery branch, and the first heat exchange pipeline is provided with a water inlet and a water outlet;

the boiler is wound with a second heat exchange pipeline which is spirally attached to the surface of the boiler and is provided with a water inlet and a water outlet; the water inlet of the second heat exchange pipeline is communicated with the water outlet of the first heat exchange pipeline through a water receiving pipeline.

1. In a further technical scheme, a water outlet of the first heat exchange pipeline can be communicated with a water inlet of a heat exchange device; or the water outlet of the first heat exchange pipeline can be communicated with a water return port of the boiler. In particular, when the water receiving pipeline is designed to be non-detachable, whether the water outlet of the water receiving pipeline flows to the water inlet of the second heat exchange pipeline or the water inlet of the heat exchange equipment or the water return port of the boiler can be selected by arranging a valve and controlling the valve; if the water connection pipeline is in a detachable design, the water outlet end of the water connection pipeline can be detached and then connected with a device in an expected water outlet direction.

2. According to the further technical scheme, an outlet of the smoke exhaust main pipeline is connected with the smoke direct exhaust branch and the smoke heat recovery branch through a three-way valve.

3. According to a further technical scheme, the outlet of the smoke exhaust main pipeline is respectively connected with the smoke direct exhaust branch and the smoke heat recovery branch through a valve.

4. According to the further technical scheme, the heat exchange device is further provided with a heat insulation layer, and the heat insulation layer is coated outside the smoke heat recovery branch and the first heat exchange pipeline.

5. According to a further technical scheme, a temperature sensor is arranged in the smoke exhaust main pipeline and is electrically connected with a controller, and the controller is electrically connected with the valve.

The utility model discloses a theory of operation and advantage as follows:

the utility model relates to a flue gas temperature recycle system, including the main line and the straight branch road of flue gas and the hot recovery branch road of flue gas of discharging fume. The inlet of the main smoke exhaust pipeline is connected with the top of the boiler, and the outlet of the main smoke exhaust pipeline is respectively connected with the direct smoke exhaust branch and the smoke heat recovery branch through valves. The flue gas heat recovery branch is wound with a first heat exchange pipeline which is spirally attached to the surface of the flue gas heat recovery branch and is provided with a water inlet and a water outlet. The boiler is wound with a second heat exchange pipeline which is spirally attached to the surface of the boiler and is provided with a water inlet and a water outlet. The water inlet of the second heat exchange pipeline is communicated with the water outlet of the first heat exchange pipeline.

Compared with the prior art, the utility model discloses can gather again and utilize the heat energy in the high temperature flue gas for the secondary to the boiler keeps warm, still can be used to do the heat exchange to the indirect heating equipment, and heat as the return water of boiler, thereby effectively delay thermal loss, reduce resource consumption, promote resource utilization, reach the purpose of the energy can be saved.

Drawings

FIG. 1 is a block diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a flue gas heat recovery branch in an embodiment of the present invention;

FIG. 3 is a schematic structural view of the boiler with the shell removed according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of the water outlet of the water connection pipeline of the embodiment of the present invention when being connected to the heat exchange device;

fig. 5 is a schematic structural view of the water outlet of the water connection pipeline of the embodiment of the utility model when being connected with the boiler backwater.

In the above drawings: 1. a main smoke exhaust pipeline; 2. directly discharging flue gas into a branch; 3. a flue gas heat recovery branch; 4. a boiler; 5. a valve; 6. a first heat exchange line; 7. a water inlet of the first heat exchange pipeline; 8. a water outlet of the first heat exchange pipeline; 9. a second heat exchange line; 10. a water inlet of the second heat exchange pipeline; 11. a water outlet of the second heat exchange pipeline; 12. a water connection pipeline; 13. a heat-insulating layer; 14. a water return port; 15. and (4) heat exchange equipment.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example (b): the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.

The terms "first," "second," and the like, as used herein, do not denote any order or importance, nor do they denote any order or importance, but rather are used to distinguish one element from another element or operation described in such technical terms.

As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.

As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.

As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.

Referring to the attached drawing 1~3, a flue gas temperature recycling system comprises a main flue gas discharging pipeline 1, a flue gas direct discharging branch 2 and a flue gas heat recycling branch 3.

The inlet of the main smoke exhaust pipeline 1 is connected with the top of a boiler 4, and the outlet of the main smoke exhaust pipeline 1 is respectively connected with the direct smoke exhaust branch 2 and the smoke heat recovery branch 3 through a valve 5.

Wherein, a first heat exchange pipeline 6 is wound on the flue gas heat recovery branch 3, the first heat exchange pipeline 6 is spirally attached to the surface of the flue gas heat recovery branch 3, and the first heat exchange pipeline 6 is provided with a water inlet 7 and a water outlet 8.

A second heat exchange pipeline 9 is wound on the boiler 4, the second heat exchange pipeline 9 is spirally attached to the surface of the boiler 4, and the second heat exchange pipeline 9 is provided with a water inlet 10 and a water outlet 11; the water inlet 10 of the second heat exchange pipeline 9 and the water outlet 8 of the first heat exchange pipeline 6 can be communicated through a water connecting pipeline 12, so that the heat preservation of the boiler 4 is realized. The water inlet 7 of the first heat exchange pipeline 6 is connected with a water source or communicated with the water outlet 11 of the second heat exchange pipeline 9.

Alternatively, as shown in fig. 4, the water outlet 8 of the first heat exchange pipeline 6 may also be communicated with a water inlet of a heat exchange device 15 through a water connection pipeline 12, and the water outlet of the heat exchange device 15 may be communicated with the water inlet 7 of the first heat exchange pipeline 6. The heat exchange device 15 is a conventional heat exchanger, and can be applied to other systems needing heating.

Preferably, as shown in fig. 5, the water outlet of the first heat exchange pipe 6 may also be communicated with a water return port 14 of the boiler 4 through a water connection pipe 12. By recharging the water absorbing the heat of the flue gas in the first heat exchange pipeline 6 into the boiler 4, the energy consumption for heating the boiler 4 can be reduced and the cost can be reduced because the backwater has heat.

If the water connection pipeline 12 is designed to be non-detachable, whether the water outlet of the water connection pipeline 12 flows to the water inlet of the second heat exchange pipeline 9 or the water inlet of the heat exchange equipment 15 or the water return port 14 of the boiler 4 can be selected by arranging a valve and controlling the valve; if the water connection pipe 12 is designed to be detachable, the water outlet end of the water connection pipe 12 can be detached and then connected with a device in a desired water outlet direction.

Preferably, the outlet of the main smoke exhaust pipeline 1 is connected with the direct smoke exhaust branch 2 and the smoke heat recovery branch 3 through a three-way valve (see fig. 1). Or, the outlet of the main smoke exhaust pipeline 1 is connected to the direct smoke exhaust branch 2 and the smoke heat recovery branch 3 through a valve (not shown).

Preferably, an insulating layer 13 is further provided, and the insulating layer 13 covers the flue gas heat recovery branch 3 and the exterior of the first heat exchange pipeline 6.

Preferably, a temperature sensor (not shown) is disposed in the main exhaust gas pipeline, and the temperature sensor is electrically connected to a controller, which is electrically connected to the valve.

When the temperature sensor detects that the temperature value of the flue gas is lower, the valve of the flue gas direct discharging branch 2 is opened, the flue gas has no heat energy which can exchange heat, and the flue gas in the main flue gas discharging pipeline 1 is directly discharged through the flue gas direct discharging branch 2; when measuring the flue gas temperature value higher, the valve of flue gas heat recovery branch 3 is opened, and the flue gas in the main pipe 1 of discharging fume discharges through flue gas heat recovery branch 3, and meanwhile, first heat exchange pipeline 6 on flue gas heat recovery branch 3 carries out heat collection to the flue gas to realize the purpose of recycle flue gas heat energy.

Except that the action of the smoke exhaust direction is automatically realized by adopting the temperature sensor, the smoke exhaust direction in the smoke exhaust main pipeline 1 can be determined by manually opening the corresponding valve.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a flue gas temperature recycle system which characterized in that:

the system comprises a main smoke exhaust pipeline, a direct smoke exhaust branch and a smoke heat recovery branch;

2. The flue gas temperature recycling system of claim 1, wherein: the water receiving pipeline is detachably designed.

3. The flue gas temperature recycling system of claim 1, wherein: the water outlet of the water connection pipeline is also communicated with the water inlet of a heat exchange device.

4. The flue gas temperature recycling system of claim 1, wherein: and the water outlet of the water connection pipeline is also communicated with a water return port of the boiler.

5. The flue gas temperature recycling system of claim 1, wherein: the outlet of the smoke exhaust main pipeline is connected with the smoke direct exhaust branch and the smoke heat recovery branch through a three-way valve.

6. The flue gas temperature recycling system of claim 1, wherein: the outlet of the smoke exhaust main pipeline is respectively connected with the smoke direct exhaust branch and the smoke heat recovery branch through a valve.

7. The flue gas temperature recycling system of claim 1, wherein: and the heat-insulating layer is coated outside the smoke heat recovery branch and the first heat exchange pipeline.

8. The flue gas temperature recycling system of claim 1, wherein: the main smoke exhaust pipeline is internally provided with a temperature sensor which is electrically connected with a controller, and the controller is electrically connected with the valve.