CN219497849U - Anti-blocking air compression system - Google Patents
Anti-blocking air compression system Download PDFInfo
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- CN219497849U CN219497849U CN202320254237.7U CN202320254237U CN219497849U CN 219497849 U CN219497849 U CN 219497849U CN 202320254237 U CN202320254237 U CN 202320254237U CN 219497849 U CN219497849 U CN 219497849U
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- outlet end
- expander
- fuel cell
- compression system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses an anti-blocking air compression system, which comprises: the outlet end of the compressor is communicated with the inlet end of the intercooler, the outlet end of the intercooler is communicated with the inlet end of the humidifier, and the outlet end of the humidifier is connected with the inlet end of the fuel cell stack; one end of the driving motor is coaxially connected with the compressor; the turbine expander is connected with the other end of the driving motor, a shunt pipeline is arranged between the inlet end and the outlet end of the turbine expander, an electromagnetic valve is arranged on one side of the shunt pipeline, and the electromagnetic valve is communicated with the shunt pipeline; when the fuel cell stack runs at low load, all the gas passes through the turbo expander to recover the energy of the gas, and when the fuel cell stack runs at high load, one part of the gas passes through the turbo expander, and the other part of the gas is discharged through the split flow pipeline to avoid the blocking phenomenon at the vortex end.
Description
Technical Field
The utility model belongs to the field of air compression systems, and particularly relates to an anti-blocking air compression system.
Background
Fuel cell stack characteristics: at high loads, high pressure of the air into the stack is required to be higher than high flow, while the gas pressure at the outlet of the electric stack is lower and the flow is high. In order to ensure that the high pressure ratio of the air to be piled is high, after the motor is increased to a certain fixed rotating speed, the compression system works normally, the turbine expander and the compression system share the rotating shaft, the rotating speed of the turbine expander is also fixed, at the moment, the pressure of the outlet of the electric pile is lower, the flow is high, the pressure of the outlet of the electric pile is lower, the pressure of the inlet of the expander is lower, but when the rotating speed of the expander is fixed, the lower the pressure ratio is, the smaller the flow allowed by the expander is, a large amount of gas at the inlet of the expander cannot pass through the expander completely, a blocking phenomenon occurs, and if the gas is continuously blocked, the system is damaged.
Disclosure of Invention
The utility model aims to: in order to overcome the defects, the utility model aims to provide an anti-blocking air compression system which has the advantages of simple structure, reasonable design and easy production, and can cause blocking phenomenon at the vortex end when facing the high-load operation of a fuel cell.
The technical scheme is as follows: an anti-clogging air compression system comprising:
the outlet end of the compressor is communicated with the inlet end of the intercooler, the outlet end of the intercooler is communicated with the inlet end of the humidifier, and the outlet end of the humidifier is connected with the inlet end of the fuel cell stack;
one end of the driving motor is coaxially connected with the compressor;
the turbine expander is connected with the other end of the driving motor, a shunt pipeline is arranged between the inlet end and the outlet end of the turbine expander, an electromagnetic valve is arranged on one side of the shunt pipeline, and the electromagnetic valve is communicated with the shunt pipeline;
when the fuel cell stack runs at low load, all the gas passes through the turbo expander to recover the energy of the gas, and when the fuel cell stack runs at high load, one part of the gas passes through the turbo expander, and the other part of the gas is discharged through the split flow pipeline to avoid the blocking phenomenon at the vortex end.
Preferably, the electromagnetic valve comprises a movable core body and a spring, wherein the movable core body is connected with one end of the spring, and the movable core body can block the shunt pipeline; the movable core body can seal the split flow pipeline under the action of the spring, the split flow pipeline is in a closed state, all gases are discharged through the turbine expander, and the energy of the gases can be recovered.
Preferably, the electromagnetic valve further comprises a fixed core body and a coil, wherein the fixed core body is connected with the other end of the spring, and the coil surrounds the fixed core body, the movable core body and the spring; the fixed core body attracts the movable core body, the split flow pipeline is in an open state, one part of gas at the outlet end of the fuel cell stack passes through the turbo expander, and the other part of gas enters the split flow pipeline, so that the fuel cell stack can be prevented from being damaged due to the fact that the gas is blocked in the stack.
Preferably, the outlet end of the fuel cell stack is communicated with the inlet end of the water-gas separator, the water outlet end of the water-gas separator is communicated with the inlet end of the humidifier, and the air outlet end of the water-gas separator is communicated with the inlet end of the turbo expander.
Preferably, the split-flow pipeline is arranged in parallel with the turbo-expander.
Preferably, the turbo-expander is a direct flow or mixed flow expander.
Preferably, the air compressor is a single stage compressor.
The technical scheme can be seen that the utility model has the following beneficial effects:
according to the anti-blocking air compression system provided by the utility model, when the fuel cell stack runs under low load, the movable core body seals the split flow pipeline, all gases are discharged through the turbine expander, and the energy of the gases can be recovered; when the fuel cell stack runs under high load, the movable core body is separated from the split flow pipeline, one part of gas is discharged through the turbo expander, and the other part of gas directly flows to the outlet end of the turbo expander through the split flow pipeline, so that the fuel cell stack can be prevented from being damaged due to the fact that the gas is blocked in the stack.
Drawings
FIG. 1 is a schematic diagram of an anti-clogging air compression system in accordance with the present utility model;
FIG. 2 is a schematic illustration of the operation of the fuel cell stack of the present utility model at low load;
FIG. 3 is a schematic diagram illustrating the operation of the fuel cell stack according to the present utility model at high load;
in the figure: the device comprises a shunt pipeline 1, a movable core 2, a spring 3, a fixed core 4 and a coil 5.
Detailed Description
The utility model is further elucidated below in connection with the drawings and the specific embodiments.
Example 1
The utility model provides an anti-blocking air compression system which comprises a compressor, a driving motor and a turbine expander, wherein the air compressor mainly supplies compressed air for a fuel cell stack, the driving motor drives the air compressor to compress the air, and the turbine expander is used for recovering waste gas energy and assisting the driving motor to drive the compressor.
The outlet end of the compressor is communicated with the inlet end of the intercooler, the outlet end of the intercooler is communicated with the inlet end of the humidifier, and the outlet end of the humidifier is connected with the inlet end of the fuel cell stack.
And the output end of the driving motor is coaxially connected with the compressor.
The turbine expander is connected with the other end of the driving motor, a shunt pipeline 1 is arranged between the inlet end and the outlet end of the turbine expander, an electromagnetic valve is arranged on one side of the shunt pipeline 1, and the electromagnetic valve is communicated with the shunt pipeline 1.
Further, the electromagnetic valve comprises a movable core body 2 and a spring 3, wherein the movable core body 2 is connected with one end of the spring 3, and the movable core body 2 can seal the shunt pipeline 1.
Further, the electromagnetic valve further comprises a fixed core 4 and a coil 5, wherein the fixed core 4 is connected with the other end of the spring 3, and the coil 5 surrounds the fixed core 4, the movable core 2 and the spring 3.
Further, the outlet end of the fuel cell stack is communicated with the inlet end of the water-gas separator, the water outlet end of the water-gas separator is communicated with the inlet end of the humidifier, and the air outlet end of the water-gas separator is communicated with the inlet end of the turbo expander.
Further, the split-flow pipeline 1 is arranged in parallel with the turbo expander.
Further, the turbo expander is a direct flow type or mixed flow type expander.
Further, the air compressor is a single-stage compressor.
Specifically, the air compressor compresses air into high-pressure air, the high-pressure air is then sent to the cathode of the fuel cell stack, oxygen in the air and hydrogen at the anode of the fuel cell stack are subjected to electrochemical reaction, and the generated products are electricity and water, and part of heat is discharged to the atmosphere along with the redundant air.
One stage of the driving motor is an air compressor, and the other stage of the driving motor is a turbo expander.
The air compressor provides compressed air with certain pressure and certain flow rate for the cathode of the fuel cell stack, meets the requirement of chemical reaction of the fuel cell on oxygen in the air, and utilizes the turbo-expander to recycle energy.
In this embodiment, the fuel cell stack is divided into two operation modes, when the fuel cell stack is operated under low load, the gas flow at the outlet end of the fuel cell stack is smaller, the electromagnetic valve is powered off, the movable core 1 seals the shunt pipeline 1 under the action of the spring 2, the shunt pipeline 1 is in a closed state, and all the gas can be discharged through the turbo expander without blocking.
When the fuel cell stack runs under high load, the gas pressure at the outlet end of the fuel cell stack is smaller, the gas flow is larger, the electromagnetic valve is electrified, the coil 5 generates a magnetic field after being electrified, the fixed core 4 sucks the movable core 2, the movable core 2 is separated from the split flow pipeline 1, the split flow pipeline 1 is in a circulation state, one part of the gas at the outlet end of the fuel cell stack is discharged through the turbo expander, and the other part of the gas directly flows to the outlet end of the turbo expander through the split flow pipeline 1, so that the gas of the fuel cell stack can be completely discharged and the fuel cell stack cannot be damaged by the blockage in the stack.
The foregoing is merely a preferred embodiment of the utility model, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the utility model, which modifications would also be considered to be within the scope of the utility model.
Claims (7)
1. An anti-clogging air compression system, characterized by: comprising the following steps:
the outlet end of the compressor is communicated with the inlet end of the intercooler, the outlet end of the intercooler is communicated with the inlet end of the humidifier, and the outlet end of the humidifier is connected with the inlet end of the fuel cell stack;
one end of the driving motor is coaxially connected with the compressor;
the turbine expander is connected with the other end of the driving motor, a shunt pipeline (1) is arranged between the inlet end and the outlet end of the turbine expander, an electromagnetic valve is arranged on one side of the shunt pipeline (1), and the electromagnetic valve is communicated with the shunt pipeline (1).
2. An anti-clogging air compression system as recited in claim 1 wherein: the electromagnetic valve comprises a movable core body (2) and a spring (3), wherein the movable core body (2) is connected with one end of the spring (3), and the movable core body (2) can block the shunt pipeline (1).
3. The anti-clogging air compression system of claim 2 wherein: the electromagnetic valve further comprises a fixed core body (4) and a coil (5), wherein the fixed core body (4) is connected with the other end of the spring (3), and the coil (5) surrounds the fixed core body (4), the movable core body (2) and the spring (3).
4. An anti-clogging air compression system as recited in claim 1 wherein: the outlet end of the fuel cell stack is communicated with the inlet end of the water-gas separator, the water outlet end of the water-gas separator is communicated with the inlet end of the humidifier, and the air outlet end of the water-gas separator is communicated with the inlet end of the turbine expander.
5. An anti-clogging air compression system as recited in claim 1 wherein: the split-flow pipeline (1) and the turbine expander are arranged in parallel.
6. An anti-clogging air compression system as recited in claim 1 wherein: the turbo-expander is a direct-flow or mixed-flow expander.
7. An anti-clogging air compression system as recited in claim 1 wherein: the compressor is a single stage compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320254237.7U CN219497849U (en) | 2023-02-20 | 2023-02-20 | Anti-blocking air compression system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320254237.7U CN219497849U (en) | 2023-02-20 | 2023-02-20 | Anti-blocking air compression system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219497849U true CN219497849U (en) | 2023-08-08 |
Family
ID=87515780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320254237.7U Active CN219497849U (en) | 2023-02-20 | 2023-02-20 | Anti-blocking air compression system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219497849U (en) |
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2023
- 2023-02-20 CN CN202320254237.7U patent/CN219497849U/en active Active
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