CN210105994U

CN210105994U - Combined power generation system and device of micro-tube type solid oxide fuel cell

Info

Publication number: CN210105994U
Application number: CN201920479233.2U
Authority: CN
Inventors: 雷运清; 彭琛
Original assignee: Wuhan Amperex Technology Ltd
Current assignee: Forsyer Technology Group Co ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-02-21
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses a microtube formula solid oxide fuel cell's cogeneration system and device, including water vapor generator, natural gas depressurization system, reformer, reactor core, heat balance ware, combustion chamber, gas turbine, air cleaner, first heat exchanger and second heat exchanger. The utility model has the advantages that: the utility model discloses a do the integration with miniature gas turbine and SOFC system, utilize the high temperature joint gas that pile exhaust high temperature cathode gas and positive pole remain fuel reburning and produce, the inflation work that flows in gas turbine promotes the turbine impeller and drives the compressor and provide high-pressure air for the pile negative pole, drives coaxial generator electricity generation simultaneously. The gas exhausted by the gas turbine exchanges heat for a heat exchanger of the electric pile, heat energy is provided for heat balance of the whole system of the electric pile, the increased electric energy and the electric energy saved by canceling the air compressor approximately improve the fuel-electric energy conversion efficiency of the SOFC by more than 15%, and meanwhile, the temperature of the exhaust gas of the electric pile is reduced.

Description

Combined power generation system and device of micro-tube type solid oxide fuel cell

Technical Field

The utility model relates to a fuel cell's cogeneration system and device specifically are a microtube formula solid oxide fuel cell's cogeneration system and device, belong to battery application technology field.

Background

Solid Oxide Fuel Cells (SOFC) generate a large amount of heat during the process of converting the chemical energy of a fuel into electrical energy, which is often not recovered and directly wasted. About 20% of the fuel can not completely participate in the reaction and is directly discharged out of the electric pile, and the fuel cannot be recycled. These two wastes seriously affect the fuel conversion efficiency of SOFC, and therefore, a combined power generation system and device of microtube type solid oxide fuel cell is proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a combined power generation system and device of a micro tube type solid oxide fuel cell to solve the above problems.

The utility model discloses a following technical scheme realizes above-mentioned mesh, a microtube formula solid oxide fuel cell's cogeneration system and device, including the reformer, the reformer passes through pipe connection steam generator and natural gas depressurization system, the one end of reformer passes through the pipe connection first heat exchanger, and the other end of reformer passes through the pipe connection second heat exchanger; the reformer is connected with a heat balancer through a pipeline, the heat balancer is connected with the reactor core through a pipeline, and the other end of the heat balancer is connected with a first heat exchanger through a pipeline; one end of the reactor core is connected with a combustion chamber through a pipeline, one end of the combustion chamber is connected with a gas turbine, and the joint of the gas turbine and the combustion chamber is connected with a first heat exchanger through a pipeline; the other end of the gas turbine is connected with a second heat exchanger through a pipeline, and an air filter is installed at one end of the gas turbine.

Preferably, the heat balancer is connected with the core through a double pipe.

A combined power generation system of a micro-tube type solid oxide fuel cell comprises a main outer shell, wherein a fixed end outer shell is fixed at one end of the main outer shell, the fixed end outer shell is connected with the main outer shell through a second shell connecting bolt, and a fuel air inlet flange is arranged on the fixed end outer shell; the same end of the main outer shell is symmetrically provided with an air inlet flange and an air outlet flange; a floating head end outer shell is arranged at one end of the main outer shell, which is far away from the fixed end outer shell, and the floating head end outer shell is connected with the main outer shell through a first shell connecting bolt; a floating head fixed on the reactor core main body is arranged in the floating head end outer shell; the floating head is connected with the reactor core main body through the floating head connecting bolt; and the floating head is provided with a corrugated connecting pipe, and the end part of the corrugated connecting pipe is provided with a fuel gas outlet flange.

Preferably, the outer shell at the floating head end and the floating head are both of hollow hemispherical structures; a gap is reserved between the floating head end outer shell and the floating head, and the floating head is positioned inside the floating head end outer shell; the floating head is communicated with the corrugated connecting pipe, and the corrugated connecting pipe penetrates through the outer shell of the end of the floating head.

Preferably, the fuel chamber shell is provided with a spark plug, and the fuel chamber shell is provided with a first air inlet and a fuel inlet; the bottom end of the fuel chamber shell is provided with a first clamp, the bottom end of the fuel chamber shell is connected with a turbine, and one end of the turbine is provided with a tail gas outlet; a second clamp, a first air bearing and an air bearing exhaust port are arranged at one end of the turbine, which is far away from the tail gas outlet; the turbine is provided with a generator output interface, the turbine is provided with a second air bearing, and one end of the second air bearing is provided with a pump impeller and a second air inlet; an air bearing air inlet is formed in the pump wheel, and an air pressure regulating valve is arranged on the pump wheel; the pump wheel is connected with a generator; the generator is provided with a generator cooling water inlet and a generator cooling water outlet, and the pump wheel is provided with an air outlet.

The utility model has the advantages that: the utility model discloses a do the integration with miniature gas turbine and SOFC system, utilize the high temperature joint gas that pile exhaust high temperature cathode gas and positive pole remain fuel reburning and produce, the inflation work that flows in gas turbine promotes the turbine impeller and drives the compressor and provide high-pressure air for the pile negative pole, drives coaxial generator electricity generation simultaneously. The gas exhausted by the gas turbine exchanges heat for a heat exchanger of the electric pile, heat energy is provided for heat balance of the whole system of the electric pile, the increased electric energy and the electric energy saved by canceling the air compressor approximately improve the fuel-electric energy conversion efficiency of the SOFC by more than 15%, and meanwhile, the temperature of the exhaust gas of the electric pile is reduced.

Drawings

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

fig. 2 is a schematic view of the system of the present invention in an initial state;

FIG. 3 is a schematic view of the system of the present invention in a normal operating state;

FIG. 4 is a front view of the overall structure of the power generation system of the present invention;

fig. 5 is a top view of the overall structure of the power generation system of the present invention;

fig. 6 is a schematic view of the entire core structure of the present invention.

In the figure: 1. a steam generator, 2, a natural gas depressurization system, 3, a reformer, 4, a reactor core, 4a, a floating head end outer shell, 4b, a floating head, 4c, a fuel outlet flange, 4d, a corrugated connecting pipe, 4e, a reactor core body, 4f, a first shell connecting bolt, 4g, a floating head connecting bolt, 4h, a main outer shell, 4i, a fixed end outer shell, 4j, a fuel inlet flange, 4k, a second shell connecting bolt, 4l, an air outlet flange, 4m, an air inlet flange, 5, a thermal balancer, 6, a combustion chamber, 6a, a first air inlet, 6b, a fuel inlet, 6c, a spark plug, 6d, a combustion chamber shell, 6e, a first clamp, 7a, a tail gas outlet, 7b, a turbine, 7c, a second clamp, 7d, a first air bearing, 7e, an air bearing exhaust port, 7f, a second air bearing, 7g, a pump impeller, 7h, a second air inlet, 7i, an air bearing air inlet, 7j, an air pressure regulating valve, 7k, a generator output interface, 7l, a generator, 7m, a generator cooling water inlet, 7n, an air outlet, 7o, a generator cooling water outlet, 7, a gas turbine, 8, an air filter, 9, a first heat exchanger, 10 and a second heat exchanger.

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 to 6, an integrated power generation apparatus of a micro-tube type solid oxide fuel cell includes a reformer 3, the reformer 3 is connected to a water vapor generator 1 and a natural gas depressurization system 2 through a pipeline, one end of the reformer 3 is connected to a first heat exchanger 9 through a pipeline, and the other end of the reformer 3 is connected to a second heat exchanger 10 through a pipeline; the reformer 3 is connected with a heat balancer 5 through a pipeline, the heat balancer 5 is connected with the reactor core 4 through a pipeline, and the other end of the heat balancer 5 is connected with a first heat exchanger 9 through a pipeline; one end of the reactor core 4 is connected with a combustion chamber 6 through a pipeline, one end of the combustion chamber 6 is connected with a gas turbine 7, and the joint of the gas turbine 7 and the combustion chamber 6 is connected with a first heat exchanger 9 through a pipeline; the other end of the gas turbine 7 is connected with a second heat exchanger 10 through a pipeline, and an air filter 8 is installed at one end of the gas turbine 7.

As a technical optimization scheme of the utility model, be connected through the double-pipe between heat balance 5 and the reactor core 4.

A combined power generation system of a micro-tube type solid oxide fuel cell comprises a main outer shell 4h, one end of the main outer shell 4h is fixed with a fixed end outer shell 4i, the fixed end outer shell 4i is connected with the main outer shell 4h through a second shell connecting bolt 4K, and a fuel inlet flange 4J is arranged on the fixed end outer shell 4 i; the same end of the main outer shell 4h is symmetrically provided with an air inlet flange 4m and an air outlet flange 4 l; a floating head end outer shell 4a is arranged at one end of the main outer shell 4h, which is far away from the fixed end outer shell 4i, and the floating head end outer shell 4a is connected with the main outer shell 4h through a first shell connecting bolt 4 f; a floating head 4b fixed on the reactor core main body 4e is arranged in the floating head end outer shell 4 a; the floating head 4b is connected with the main reactor core body 4e of the main outer shell 4h through the floating head connecting bolt 4 g; and a corrugated connecting pipe is arranged on the floating head 4b, and a fuel gas outlet flange 4c is arranged at the end part of the corrugated connecting pipe 4 d.

As a specific embodiment of the present invention: the floating head end outer shell 4a and the floating head 4b are both of hollow hemispherical structures; a gap is reserved between the floating head end outer shell 4a and the floating head 4b, and the floating head 4b is positioned inside the floating head end outer shell 4 a; the floating head 4b is communicated with the corrugated connecting pipe 4d, and the corrugated connecting pipe 4d penetrates through the outer shell 4a of the floating head end.

As a specific embodiment of the present invention: the fuel chamber is characterized by further comprising a fuel chamber shell 6d, wherein a spark plug 6c is arranged on the fuel chamber shell 6d, a first air inlet 6a and a fuel inlet 6b are arranged on the fuel chamber shell 6d, the first air inlet 6a is an air inlet, and the fuel inlet 6b is a fuel gas inlet; the bottom end of the fuel chamber shell 6d is provided with a first clamp, the bottom end of the fuel chamber shell 6d is connected with a turbine 7b, and one end of the turbine 7b is provided with a tail gas outlet 7 a; one end of the turbine 7b, which is far away from the tail gas outlet 7a, is provided with a second clamp 7c, a first air bearing 7d and an air bearing exhaust port 7 e; a generator output interface 7k is arranged on the turbine 7b, a second air bearing 7f is arranged on the turbine 7b, and a pump impeller 7g and a second air inlet 7h are arranged at one end of the second air bearing 7 f; an air bearing air inlet 7i is formed in the pump wheel 7g, and an air pressure adjusting valve 7j is formed in the pump wheel 7 g; the pump impeller 7g is connected with a generator 7 l; the generator 7l is provided with a generator cooling water inlet 7m and a generator cooling water outlet 7o, and the pump impeller 7g is provided with an air outlet 7 n.

The utility model discloses when using, at first, water vapor generator 1 heats liquid water, for the system provides vapor, and natural gas depressurization system 2 steps down the liquefied natural gas in the high pressure gas holder to 3.5bar, supplies the system to use. The reformer 3 makes the steam and methane react at high temperature and high pressure to generate hydrogen, carbon dioxide and carbon monoxide. (strong endothermic reaction, heat is provided by high temperature tail gas generated by a combustion chamber), the reactor core 4 converts hydrogen, carbon monoxide and oxygen through a fuel cell system in the reactor core to generate water and carbon dioxide, and simultaneously generates electric energy, a heat balancer 5 leads the hydrogen, carbon monoxide and air into the reactor core after the temperature balance is consistent, the combustion chamber 6 leads the hydrogen and carbon monoxide which are not completely reacted into the combustion chamber for combustion, a gas turbine 7 pushes the high temperature and high pressure tail gas generated by the combustion chamber 6 to blades of the gas turbine, thereby generating electricity, an air filter 8 provides clean air for the system (mainly using oxygen), a first heat exchanger 9 secondarily preheats the air which enters through the high temperature tail gas generated by the combustion chamber, a second heat exchanger 10 preheats the air which enters through the high temperature tail gas generated by the reformer 3, and when the system is used, the operation of the system is divided into two states, the first is an initial starting state, only natural gas is combusted in the combustion chamber to generate heat and is led into the reformer, when the temperature of the reformer is increased to the temperature of the methane steam reforming reaction, the reformer enters a normal operation state (other equipment also reaches the working temperature), hydrogen and carbon monoxide generated by the reformer enter the reactor core, electrons are lost at the cathode and the anode of the reactor core, and current is generated.

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. An integrated power generation device of a micro-tube type solid oxide fuel cell, which is characterized in that: the system comprises a reformer (3), wherein the reformer (3) is connected with a water vapor generator (1) and a natural gas depressurization system (2) through pipelines, one end of the reformer (3) is connected with a first heat exchanger (9) through a pipeline, and the other end of the reformer (3) is connected with a second heat exchanger (10) through a pipeline; the reformer (3) is connected with a heat balancer (5) through a pipeline, the heat balancer (5) is connected with the reactor core (4) through a pipeline, and the other end of the heat balancer (5) is connected with a first heat exchanger (9) through a pipeline; one end of the reactor core (4) is connected with a combustion chamber (6) through a pipeline, one end of the combustion chamber (6) is connected with a gas turbine (7), and the joint of the gas turbine (7) and the combustion chamber (6) is connected with a first heat exchanger (9) through a pipeline; the other end of the gas turbine (7) is connected with a second heat exchanger (10) through a pipeline, and an air filter (8) is installed at one end of the gas turbine (7).

2. The integrated power generation device of the microtube-type solid oxide fuel cell as claimed in claim 1, wherein: the heat balancer (5) is connected with the reactor core (4) through a double pipeline.

3. An integrated power generation system of a micro-tube type solid oxide fuel cell, which is characterized in that: the fuel-air separation device comprises a main outer shell (4h), wherein a fixed end outer shell (4i) is fixed at one end of the main outer shell (4h), the fixed end outer shell (4i) is connected with the main outer shell (4h) through a second shell connecting bolt (4K), and a fuel air inlet flange (4j) is arranged on the fixed end outer shell (4 i); an air inlet flange (4m) and an air outlet flange (4l) are symmetrically arranged at the same end of the main outer shell (4 h); a floating head end outer shell (4a) is arranged at one end, away from the fixed end outer shell (4i), of the main outer shell (4h), and the floating head end outer shell (4a) is connected with the main outer shell (4h) through a first shell connecting bolt (4 f); a floating head (4b) fixed on the reactor core main body (4e) is arranged in the floating head end outer shell (4 a); the floating head (4b) is connected with the reactor core main body (4e) through a floating head connecting bolt (4 g); and a corrugated connecting pipe (4d) is arranged on the floating head (4b), and a fuel gas outlet flange (4c) is arranged at the end part of the corrugated connecting pipe (4 d).

4. The integrated power generation system of the microtube-type solid oxide fuel cell as claimed in claim 3, wherein: the floating head end outer shell (4a) and the floating head (4b) are both hollow hemispherical structures; a gap is reserved between the floating head end outer shell (4a) and the floating head (4b), and the floating head (4b) is positioned inside the floating head end outer shell (4 a); the floating head (4b) is communicated with the corrugated connecting pipe (4d), and the corrugated connecting pipe (4d) penetrates through the floating head end outer shell (4 a).

5. The integrated power generation system of the microtube-type solid oxide fuel cell as claimed in claim 3, wherein: the fuel chamber is characterized by further comprising a fuel chamber shell (6d), wherein a spark plug (6c) is arranged on the fuel chamber shell (6d), and a first air inlet (6a) and a fuel inlet (6b) are formed in the fuel chamber shell (6 d); a first clamp is arranged at the bottom end of the fuel chamber shell (6d), the bottom end of the fuel chamber shell (6d) is connected with a turbine (7b), and a tail gas outlet (7a) is formed in one end of the turbine (7 b); a second clamp (7c), a first air bearing (7d) and an air bearing exhaust port (7e) are arranged at one end, away from the tail gas outlet (7a), of the turbine (7 b); a generator output interface (7k) is arranged on the turbine (7b), a second air bearing (7f) is arranged on the turbine (7b), and a pump impeller (7g) and a second air inlet (7h) are arranged at one end of the second air bearing (7 f); an air bearing air inlet (7i) is formed in the pump wheel (7g), and an air pressure adjusting valve (7j) is arranged on the pump wheel (7 g); the pump wheel (7g) is connected with a generator (7 l); the generator (7l) is provided with a generator cooling water inlet (7m) and a generator cooling water outlet (7o), and the pump wheel (7g) is provided with an air outlet (7 n).