CN211425135U

CN211425135U - Chimney suitable for heat exchange of flue gas of fuel cell cogeneration product

Info

Publication number: CN211425135U
Application number: CN201920868567.9U
Authority: CN
Inventors: 胡晓雨; 蔡信; 刘志华; 任超; 毛磊
Original assignee: Jiangsu Huade Hydrogen Energy Technology Co ltd
Current assignee: Jiangsu Huade Hydrogen Energy Technology Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-09-04
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a chimney suitable for heat exchange of flue gas of a fuel cell cogeneration product, which comprises an outer shell, an inner shell is sleeved in the outer shell, a first through hole is drilled on the outer shell, a medium-temperature air inlet is fixedly connected on the wall of the first through hole, a second through hole is drilled on the outer shell, a gas outlet is fixedly connected on the wall of the second through hole, a third through hole is drilled on the outer shell, a fourth through hole corresponding to the third through hole is drilled on the inner shell, cold water inlets are placed in the third through hole and the fourth through hole and run through the third through hole and the fourth through hole, and a hose is fixedly connected at one end of the cold water inlet in the inner shell; the utility model provides a be suitable for chimney of fuel cell cogeneration product flue gas heat transfer, it concentrates the two parts waste gas, adopts the chimney heat transfer design, and hierarchical heat absorption, make full use of two parts heat has improved heat utilization efficiency, has practiced thrift the energy greatly.

Description

Chimney suitable for heat exchange of flue gas of fuel cell cogeneration product

Technical Field

The utility model relates to a fuel cell technical field especially relates to a chimney that is suitable for fuel cell cogeneration product flue gas heat transfer.

Background

The fuel cell stack generates electricity by using hydrogen generated by natural gas reforming equipment, high-temperature waste gas is generated in the process of hydrogen production by reforming natural gas, the waste gas needs to be used for heating, and meanwhile, the medium-temperature air from the fuel cell has the temperature of about 70 ℃, and the heat needs to be used. At present, the heat of two parts of gas is absorbed by hot water respectively, waste gas is discharged, and the heat utilization efficiency is low.

Therefore, in order to solve the above technical problems, it is necessary to provide a chimney suitable for heat exchange of flue gas of a fuel cell cogeneration product.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a be suitable for chimney of fuel cell cogeneration product flue gas heat transfer, it concentrates two parts waste gas, adopts the chimney heat transfer design, and the hierarchical heat absorption makes full use of two parts of heat has improved heat utilization efficiency, has practiced thrift the energy greatly.

In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:

a chimney suitable for heat exchange of flue gas of a fuel cell cogeneration product comprises an outer shell, wherein an inner shell is sleeved in the outer shell, a first through hole is drilled in the outer shell, a medium-temperature air inlet is fixedly connected to the wall of the first through hole, a second through hole is drilled in the outer shell, a gas outlet is fixedly connected to the wall of the second through hole, a third through hole is drilled in the outer shell, a fourth through hole corresponding to the third through hole is drilled in the inner shell, cold water inlets are placed in the third through hole and the fourth through hole and penetrate through the third through hole and the fourth through hole, a hose is fixedly connected to one end, located in the inner shell, of each cold water inlet, a fifth through hole is drilled in the outer shell, one end, far away from each cold water inlet, of the hose penetrates through the fifth through hole, a sixth through hole is drilled in the outer shell, and a hot water outlet is placed in the sixth through hole, and one end of the hot water outlet positioned in the outer shell is connected with the hose, a seventh through hole is drilled on the outer shell, and a high-temperature air inlet is placed in the seventh through hole.

As a further improvement of the utility model, the middle temperature air inlet and the gas outlet are both provided with check valves.

As a further improvement of the utility model, the cold water inlet and the high-temperature air inlet are both located at the lower end of the outer shell, and the hot water outlet is located at the middle and upper part of the outer shell.

As a further improvement of the utility model, a silica gel pad is placed in the sixth through hole.

As a further improvement of the utility model, the upper end of the inner shell is lower than the upper end of the outer shell.

As a further improvement of the utility model, the hot water outlet is lower than the upper end of the inner shell.

The utility model has the advantages that: the utility model provides a be suitable for chimney of fuel cell cogeneration product flue gas heat transfer, it concentrates the two parts waste gas, adopts the chimney heat transfer design, and hierarchical heat absorption, make full use of two parts heat has improved heat utilization efficiency, has practiced thrift the energy greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

fig. 2 is a schematic cross-sectional view of a chimney suitable for heat exchange of flue gas of a fuel cell cogeneration product according to an embodiment of the present invention;

fig. 3 is a top view of an embodiment of the present invention.

In the figure: 1. the air conditioner comprises an outer shell, an inner shell 2, a medium temperature air inlet 3, a gas outlet 4, a cold water inlet 5, a hose 6, a hot water outlet 7, a high temperature air inlet 8 and a one-way valve 9.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below 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, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

In the various figures of the present invention, certain dimensions of structures or portions are exaggerated relative to other structures or portions for ease of illustration, and thus, are used only to illustrate the basic structure of the subject matter of the present invention.

Terms such as "left", "right", and the like, used herein to denote relative spatial positions, are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "to the right" of other elements or features would then be oriented "to the left" of the other elements or features. Thus, the exemplary term "right side" may encompass both left and right orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1 to 3, in an embodiment of the present invention, a chimney suitable for heat exchange of flue gas of a fuel cell cogeneration product comprises an outer housing 1, an inner housing 2 is sleeved in the outer housing 1, a first through hole is drilled in the outer housing 1, a medium temperature air inlet 3 is fixedly connected to a wall of the first through hole, a second through hole is drilled in the outer housing 1, a gas outlet 4 is fixedly connected to a wall of the second through hole, a third through hole is drilled in the outer housing 1, a fourth through hole corresponding to the third through hole is drilled in the inner housing 2, cold water inlets 5 are disposed in the third through hole and the fourth through hole, a hose 6 is fixedly connected to one end of the cold water inlet 5 located in the inner housing 2, a fifth through hole is drilled in the outer housing 1, one end of the hose 6 far away from the cold water inlet 5 runs through the fifth through hole, a sixth through hole is drilled in the outer housing 1, placed hot water outlet 7 in the sixth through-hole, and hot water outlet 7 is located the one end of shell body 1 and links to each other with hose 6, and the seventh through-hole has been dug on the shell body 1, has placed high temperature air inlet 8 in the seventh through-hole.

Specifically, the lower end of the hose 6 is connected with the cold water inlet 5, the upper end of the hose 6 is connected with the hot water outlet 7, the lower half part of the hose 6 is positioned inside the inner shell 2, the upper half part of the hose 6 penetrates through the fifth through hole to be positioned between the outer shell 1 and the inner shell 2, the medium-temperature air enters from the medium-temperature air inlet 3, flows out from the gas outlet 4 and circulates in the inner shell 2; the high-temperature air flows in from the high-temperature air inlet 8 and flows out from the gas outlet 4, and circulates in the gap between the outer shell 1 and the inner shell 2; cold water flows in from the cold water inlet 5, through the hose 6 and out the hot water outlet 7.

Furthermore, check valves 9 are respectively arranged on the medium-temperature air inlet 3 and the gas outlet 4, so that air is not easy to flow back due to different temperatures, heat exchange efficiency is influenced, and unnecessary waste is caused to resources.

Furthermore, the cold water inlet 5 and the high-temperature air inlet 8 are both positioned at the lower end of the outer shell 1, and the hot water outlet 7 is positioned at the middle upper part of the outer shell 1, so that the heat energy can be more fully converted, and the utilization efficiency is improved.

Furthermore, the silica gel pad is placed in the sixth through hole, so that high-temperature gas is not easy to overflow from the sixth through hole, and heat waste is caused.

Further, the upper end of the inner case 2 is lower than the upper end of the outer case 1, so that the high temperature air is easily discharged from the gas outlet 4 after sufficient heat exchange.

Furthermore, the hot water outlet 7 is lower than the upper end of the inner shell 2, so that the air which has fully performed heat exchange is not easily influenced to flow out from the gas outlet 4, the speed of subsequent gas entering is increased, and the exchange speed is increased.

When flue gas heat exchange is needed, the cold water pipe is connected with the cold water inlet 5, the medium-temperature air is connected with the medium-temperature air inlet 3, the high-temperature air is connected with the high-temperature air inlet 8, then the cold water valve is opened, cold water flows through the hose 6, and then flows out from the hot water outlet 7. When the cold water reaches the lower half part of the hose 6, the lower half part of the hose 6 is positioned in the inner shell 2, therefore, the cold water can exchange heat with the medium-temperature air flowing through the inner shell 2, then when the water after primary heat exchange flows to the upper half part of the hose 6, the upper half part of the hose 6 is positioned between the outer shell 1 and the inner shell 2, and the outer shell 1 and the inner shell 2 can have high-temperature air to flow through, therefore, the water after primary heat exchange can exchange heat with the high-temperature air again, the temperature of the water is increased again, and the heat in the air is fully utilized.

According to the technical scheme provided by the utility model, the utility model discloses following beneficial effect has:

the utility model provides a be suitable for chimney of fuel cell cogeneration product flue gas heat transfer, it concentrates the two parts waste gas, adopts the chimney heat transfer design, and hierarchical heat absorption, make full use of two parts heat has improved heat utilization efficiency, has practiced thrift the energy greatly.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The chimney is suitable for heat exchange of product smoke of a fuel cell cogeneration, and is characterized by comprising an outer shell (1), an inner shell (2) is sleeved in the outer shell (1), a first through hole is dug in the outer shell (1), a medium-temperature air inlet (3) is fixedly connected to the wall of the first through hole, a second through hole is dug in the outer shell (1), a gas outlet (4) is fixedly connected to the wall of the second through hole, a third through hole is dug in the outer shell (1), a fourth through hole corresponding to the third through hole is dug in the inner shell (2), a cold water inlet (5) is placed in the third through hole and the fourth through hole, the cold water inlet (5) penetrates through the third through hole and the fourth through hole, a hose (6) is fixedly connected to one end, located in the inner shell (2), of the cold water inlet (5), a fifth through hole is dug in the outer shell (1), the one end that cold water entry (5) were kept away from in hose (6) runs through the fifth through-hole, it has the sixth through-hole to cut on shell body (1), placed hot water export (7) in the sixth through-hole, and hot water export (7) are located the one end in shell body (1) and link to each other with hose (6), it has the seventh through-hole to cut on shell body (1), high temperature air entry (8) have been placed in the seventh through-hole.

2. The chimney suitable for the heat exchange of the flue gas of the fuel cell cogeneration product according to claim 1, wherein the intermediate temperature air inlet (3) and the gas outlet (4) are both provided with one-way valves (9).

3. The chimney suitable for heat exchange of flue gas of fuel cell cogeneration product according to claim 1, wherein the cold water inlet (5) and the high temperature air inlet (8) are both located at the lower end of the outer casing (1), and the hot water outlet (7) is located at the middle upper part of the outer casing (1).

4. The chimney suitable for heat exchange of flue gas of a fuel cell cogeneration product according to claim 1, wherein a silica gel pad is placed in the sixth through hole.

5. The chimney suitable for the heat exchange of the flue gas of the fuel cell cogeneration product according to claim 1, wherein the upper end of the inner casing (2) is lower than the upper end of the outer casing (1).

6. The chimney suitable for the heat exchange of the flue gas of the fuel cell cogeneration product according to claim 1, wherein the hot water outlet (7) is lower than the upper end of the inner shell (2).