CN217632812U

CN217632812U - Fuel cell air compressor of integrated water knockout drum

Info

Publication number: CN217632812U
Application number: CN202221404160.9U
Authority: CN
Inventors: 俞宇枫; 曾强; 辛宇; 叶世嘉
Original assignee: Hedwell Taicang Energy Technology Co ltd
Current assignee: Hedwell Taicang Energy Technology Co ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-10-21
Anticipated expiration: 2032-06-07

Abstract

A fuel cell air compressor integrated with a water separator comprises a compressor, a driving motor and a turbine, wherein the compressor and the turbine are respectively positioned on two sides of the driving motor, and the compressor and the turbine and the driving motor rotate coaxially; and a water separator is arranged at the position of an air inlet of the turbine shell and can separate liquid water in the air inlet end of the turbine. The utility model discloses a fuel cell air compressor machine of integrated water knockout drum, at the turbine entry integrated water knockout drum, can separate the liquid water in the turbine entry gas, can discharge the ponding of turbine casing inside in time simultaneously, improve the performance and the reliability of turbine; meanwhile, a drain hole is arranged at the lowest position of the turbine shell in the gravity direction, water is drained timely, liquid water entering the turbine gas can be separated, the reliability of the turbine is improved, and meanwhile liquid water precipitated in the turbine shell can be drained timely, so that the performance of the turbine is not affected.

Description

Fuel cell air compressor of integrated water knockout drum

Technical Field

The utility model belongs to the technical field of the fuel cell air compressor machine, specifically, relate to a fuel cell air compressor machine of integrated water knockout drum.

Background

The proton exchange membrane type fuel cell system is a high-efficiency clean new energy power system, an air compressor compresses air, then the air is sent to a cathode of a fuel cell, oxygen in the air and hydrogen at an anode are subjected to electrochemical reaction, the generated product is electricity and water, partial heat is discharged to the atmosphere along with redundant air, and except for the fact that other products polluting the environment do not exist, the fuel cell is very clean and environment-friendly, and at present, all countries greatly promote the development and popularization of the hydrogen fuel cell power system.

The air compressor dedicated to the fuel cell is a very important part in a hydrogen fuel cell power system, and is used for providing compressed air with certain pressure and certain flow for the cathode of the fuel cell to meet the requirement of the fuel cell reaction on oxygen in the air. At present, the fuel cell air compressor has single-stage compression and two-stage compression. The single-stage compression is that a motor drives a pinch roller, and the two-stage compression is that a motor drives two pinch rollers, and one is the low pressure level, and another is the high-pressure level, and high-pressure level and low-pressure level are the series connection, and the air reentries the high-pressure level after the low pressure level compression and carries out the second compression, so the air pressure and the flow that two-stage compressor obtained are higher than single-stage compressor, and the fuel cell power range of applicable is bigger. Wherein only a part of oxygen of the compressed air entering the fuel cell stack is involved in the reaction, the rest of the compressed air is discharged to the atmosphere, and the compressed air discharged by the fuel cell still has a high pressure, so that if the part of the compressed air is directly discharged to the atmosphere, the energy carried by the high-pressure air is wasted.

In order to recycle the energy in the high-pressure exhaust gas of the fuel cell, an air compressor with a turbine is currently available, that is, the turbine recovers the exhaust gas capacity, and an auxiliary motor drives the compressor, so that the power consumption of the motor can be reduced, and the efficiency of the fuel cell system can be remarkably improved.

As can be seen from the foregoing description, the fuel cell chemically reacts hydrogen and oxygen to generate electricity and water, wherein the generated water is discharged out of the stack along with the unreacted air, the water generated in the stack exists in a state of water vapor, and the water vapor gradually condenses into liquid water along with the decrease of pressure and temperature during the process of discharging the stack. If the resulting liquid water enters the turbine directly with the air, the droplets may damage or even completely fail the turbine rotating at high speed. In addition, the waste gas expands in the turbine to do work, the pressure and the temperature can be further reduced, and the liquid water can be further separated out from the water vapor in the turbine. If the precipitated liquid water does not exit the turbine in time, it accumulates in the turbine housing, which can lead to reduced turbine performance.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a fuel cell air compressor integrated with a water separator, which solves the problem that liquid water in the air inlet of a turbine in the prior art can cause the failure of the turbine; the turbine has no water drain hole, the water vapor in the turbine inlet air can expand to do work in the turbine shell, the pressure and the temperature are further reduced, liquid water can be separated out, and if the liquid water cannot be timely drained out of the turbine, the performance and the reliability of the turbine can be affected.

The technical scheme is as follows: the utility model provides a fuel cell air compressor of integrated water knockout drum, including compressor, driving motor and turbo machine, said compressor and turbo machine locate at both sides of driving motor respectively, and compressor and turbo machine rotate with the driving motor is coaxial; and a water separator is arranged at the position of an air inlet of the turbine shell and can separate liquid water in the air inlet end of the turbine. The utility model discloses a fuel cell air compressor machine of integrated water knockout drum, at the turbine entry integrated water knockout drum, can separate the liquid water in the turbine entry gas, can discharge the ponding of turbine casing inside in time simultaneously, improve the performance and the reliability of turbine; meanwhile, a drain hole is designed at the lowest position of the turbine shell in the gravity direction, the drain hole and liquid water separated by the water separator are gathered in the water storage box together, and the electric control drain valve controls the timely drainage. The design can separate the liquid water in the gas entering the turbine, improve the reliability of the turbine, and simultaneously discharge the liquid water separated out in the turbine shell in time so as to avoid influencing the performance of the turbine.

Furthermore, in the fuel cell air compressor integrated with the water separator, the driving motor can drive the compressor to compress air into high-pressure air.

Further, in the fuel cell air compressor with the integrated water separator, the turbine can assist the driving motor to drive the compressor.

Further, in the fuel cell air compressor with the integrated water separator, a water drain hole is formed in the lower end portion of the turbine. A drain hole is designed at the lowest position of the gravity center of the turbine shell and used for collecting water on the inner wall of the turbine shell.

Furthermore, the fuel cell air compressor of the integrated water separator further comprises a water storage box and a drain valve, wherein the water separator and the drain hole are communicated with the water storage box, and the drain valve is arranged on the water storage box. The drainage of the turbine shell and the drainage of the water separator are gathered to the same water storage box through a pipeline; an electric control drainage valve is designed behind the water outlet box, and drainage can be carried out timely according to the liquid level height in the water storage box.

Furthermore, according to the fuel cell air compressor integrated with the water separator, a first drainage pipeline is arranged between the water separator and the water storage box, and the water separator is communicated with the water storage box through the first drainage pipeline.

Furthermore, a second drainage pipeline is arranged between the drainage hole and the water storage box of the fuel cell air compressor integrated with the water separator, and the drainage hole is communicated with the water storage box through the second drainage pipeline.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: the fuel cell air compressor machine of integrated water knockout drum, have following advantage:

1. liquid water in the inlet air of the turbine can be separated, so that the failure of the turbine is avoided;

2. accumulated water in the turbine shell can be actually discharged;

3. the water knockout drum and the turbine shell share one water storage box, and the arrangement is compact.

Drawings

Fig. 1 is a schematic view of the overall structure of the fuel cell air compressor with integrated water separator according to the present invention;

fig. 2 is the utility model discloses a fuel cell air compressor's of integrated water knockout drum local structure schematic diagram.

In the figure: the system comprises a compressor 1, a driving motor 2, a turbine 3, a water separator 4, a water discharge hole 5, a water storage box 6, a water discharge valve 7, a first water discharge pipeline 8 and a second water discharge pipeline 9.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example one

The fuel cell air compressor integrated with the water separator as shown in fig. 1 and 2 comprises a compressor 1, a driving motor 2 and a turbine 3, wherein the compressor 1 and the turbine 3 are respectively positioned at two sides of the driving motor 2, and the compressor 1 and the turbine 3 rotate coaxially with the driving motor 2; a water separator 4 is arranged at the inlet of the casing of the turbine 3, and the water separator 4 can separate liquid water in the inlet end of the turbine 3. The fuel cell air compressor mainly comprises three parts: the air compressor comprises a compressor 1, a driving motor 2 and a turbine 3, wherein the motor drives the compressor to compress air, and the turbine recovers waste gas discharged by a fuel cell to assist the motor to drive the compressor, so that the power consumption of the motor is reduced.

In the above structure, the driving motor 2 may drive the compressor 1 to compress air into high-pressure air. The turbine 3 may assist the drive motor 2 in driving the compressor 1.

Furthermore, the lower end of the turbine 3 is provided with a drain hole 5. The drain hole 5 needs to be provided at the gravitational lowest position of the casing of the turbine 3.

Example two

Based on the structure of the embodiment, the fuel cell air compressor integrated with the water separator further comprises a water storage box 6 and a drain valve 7, the water separator 4 and the drain hole 5 are communicated with the water storage box 6, and the drain valve 7 is arranged on the water storage box 6. And a first drainage pipeline 8 is arranged between the water separator 4 and the water storage box 6, and the water separator 4 is communicated with the water storage box 6 through the first drainage pipeline 8. And a second drainage pipeline 9 is arranged between the drainage hole 5 and the water storage box 6, and the drainage hole 5 is communicated with the water storage box 6 through the second drainage pipeline 9.

The utility model discloses a fuel cell air compressor machine of integrated water knockout drum, its structural principle is:

1. the compressor and the turbine are positioned at two ends of the motor shaft and can coaxially rotate;

2. the motor drives the compressor, compresses air into high-pressure air, and supplies the high-pressure air to the electric pile for reaction power generation;

3. the turbine recovers the exhaust energy of the galvanic pile, and the auxiliary motor drives the compressor, so that the power consumption of the motor can be reduced;

4. the water separator is integrated at the inlet of the turbine to separate liquid water contained in the inlet air of the turbine so as to avoid the failure of the turbine rotating at high speed;

5. a drain hole is designed on the turbine shell at the lowest gravity position, and the turbine shell and the liquid water separated by the water separator are gathered into the water storage box through the drain pipe;

6. the water storage box is designed with an electric control drain valve which can be opened timely for draining according to the liquid level in the water storage box.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a fuel cell air compressor machine of integrated water knockout drum which characterized in that: the device comprises a compressor (1), a driving motor (2) and a turbine (3), wherein the compressor (1) and the turbine (3) are respectively positioned on two sides of the driving motor (2), and the compressor (1) and the turbine (3) rotate coaxially with the driving motor (2);

the water separator (4) is arranged at the air inlet of the shell of the turbine (3), and the water separator (4) can separate liquid water in the air inlet end of the turbine (3).

2. The fuel cell air compressor of the integrated water separator of claim 1, wherein: the driving motor (2) can drive the compressor (1) to compress air into high-pressure air.

3. The fuel cell air compressor of the integrated water separator of claim 2, wherein: the turbine (3) can assist the driving motor (2) to drive the compressor (1).

4. The fuel cell air compressor of the integrated water separator according to claim 1 or 3, wherein: the lower end part of the turbine (3) is provided with a drain hole (5).

5. The fuel cell air compressor of the integrated water separator of claim 4, wherein: the fuel cell air compressor integrated with the water separator further comprises a water storage box (6) and a drain valve (7), the water separator (4) and the drain hole (5) are communicated with the water storage box (6), and the drain valve (7) is arranged on the water storage box (6).

6. The water separator integrated fuel cell air compressor of claim 5, wherein: a first drainage pipeline (8) is arranged between the water distributor (4) and the water storage box (6), and the water distributor (4) is communicated with the water storage box (6) through the first drainage pipeline (8).

7. The fuel cell air compressor of the integrated water separator of claim 4, wherein: and a second drainage pipeline (9) is arranged between the drain hole (5) and the water storage box (6), and the drain hole (5) is communicated with the water storage box (6) through the second drainage pipeline (9).