CN217468509U

CN217468509U - Fuel cell automobile exhaust treatment system

Info

Publication number: CN217468509U
Application number: CN202220998341.2U
Authority: CN
Inventors: 吴桐; 潘建欣; 杨军; 王孟博; 胡旦
Original assignee: Wuhan Hydrogen Energy and Fuel Cell Industry Technology Research Institute Co Ltd
Current assignee: Wuhan Hydrogen Energy and Fuel Cell Industry Technology Research Institute Co Ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-09-20
Anticipated expiration: 2032-04-27

Abstract

The utility model provides a fuel cell automobile exhaust processing system, it includes: the silencing mechanism comprises a box body and a resonance tube, wherein the box body is hollow, air inlet holes and air exhaust holes are formed in two sides of the box body along the length direction, the resonance tube is arranged in the box body, two ends of the resonance tube are communicated to the air inlet holes and the air exhaust holes respectively, so that tail gas can flow through the resonance tube to be exhausted out of the box body, a plurality of through holes are formed in the resonance tube along the circumferential direction, a resonance chamber is formed between the resonance tube and the box body, and the through holes can receive noise entering the resonance tube and complete silencing. The utility model discloses a tail gas processing system integration has gas-liquid separation structure and amortization structure, can also the noise reduction when carrying out automobile exhaust and handling.

Description

Fuel cell automobile exhaust treatment system

Technical Field

The utility model relates to a tail gas treatment technical field especially relates to a fuel cell automobile tail gas processing system.

Background

When a fuel cell automobile operates, the electric pile needs air with certain pressure and flow, the tail gas flow speed after reaction is high, great noise can be generated at a tail discharge port, liquid water generated by chemical inversion in the electric pile can be discharged along with tail gas, and in a northern severe cold place, the discharged liquid water can be instantly frozen to influence the driving safety of a rear automobile. Therefore, the fuel cell vehicles are all provided with an exhaust gas treatment system which can conveniently discharge water.

For example, patent CN216213596U discloses an exhaust gas treatment device and a fuel cell vehicle, the exhaust gas treatment device includes a water storage tank, a gas-liquid separator and a heat exchanger; the inlet of the gas-liquid separator is communicated with a tail gas discharge port of the fuel cell system, the gas outlet of the gas-liquid separator is communicated with the inlet of the heat exchanger, and the liquid outlet of the gas-liquid separator is communicated with the inlet of the water storage tank; when the outside temperature is lower than the first preset temperature, the heat exchanger starts to supply heat to the vehicle body. When the tail gas separator is used, tail gas discharged from a tail gas discharge port of the fuel cell system is subjected to steam-water separation in the gas-liquid separator, water enters the water storage tank, and the tail gas enters the heat exchanger and is discharged through the heat exchanger. When the external temperature is lower, the heat exchanger is started to heat the vehicle body after exchanging heat with the tail gas, so that the energy is recycled, and the tail gas is discharged after being cooled, so that the generation of fog is avoided. The utility model discloses a collection of moisture in the tail gas avoids the problem of freezing that directly discharges to the road surface and lead to.

At present, most fuel cell automobiles are provided with tail gas treatment devices, the tail gas treatment devices are similar to the above patents, and the tail gas treatment devices are lack of noise treatment structures, and only the tail gas generated by the fuel cell automobiles can be treated simply, so that liquid water doped in the tail gas is removed, the noise generated when the fuel cell automobiles are used cannot be solved, and the automobiles can generate large noise when running at high speed. Therefore, there is a need for an exhaust gas treatment device that can simultaneously eliminate noise and remove liquid water droplets from exhaust gas.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide an automobile exhaust gas treatment system for a fuel cell, which solves the technical problem that the exhaust gas treatment device in the prior art cannot remove liquid water droplets and simultaneously eliminate noise.

In order to achieve the above technical purpose, the technical solution of the present invention provides a fuel cell automobile exhaust gas treatment system, which includes:

the silencing mechanism comprises a box body and a resonance tube, wherein the box body is hollow, an air inlet hole and an air outlet hole are formed in two sides of the box body along the length direction, the resonance tube is arranged in the box body, two ends of the resonance tube are communicated with the air inlet hole and the air outlet hole respectively, so that tail gas can flow through the resonance tube and is discharged out of the box body, a plurality of through holes are formed in the resonance tube along the circumferential direction, a resonance chamber is formed between the resonance tube and the box body, and the resonance chamber can receive noise entering the resonance tube through the through holes and complete silencing;

the gas-liquid separation mechanism comprises a plurality of water distribution pieces and a plurality of drain pipes, the water distribution pieces are arranged in the resonance pipe at intervals along the tail gas flowing direction, any two adjacent water distribution pieces are respectively connected to the upper portion and the lower portion of the inner wall of the resonance pipe in a staggered mode so as to form an S-shaped tail gas flowing channel in the resonance pipe, and the drain pipes are arranged at the bottom of the box body.

Furthermore, the air conditioner also comprises a spiral air inlet pipe, and the spiral air inlet pipe is arranged on the air inlet hole.

Furthermore, the side wall of the drain pipe is also provided with a mounting opening, and the drain pipe further comprises a conductivity sensor, wherein the conductivity sensor is inserted into the drain pipe through the mounting opening and is used for detecting the conductivity of water flowing through the drain pipe.

Further, still include the collecting pipe, the collecting pipe set up in the exhaust hole communicates to the resonance pipe.

Furthermore, the hydrogen collecting pipe is arranged on the side wall of the collecting pipe and communicated with the collecting pipe.

Furthermore, the box body is cylindrical.

Further, the diameter of the resonance tube is larger than the air inlet and the air outlet.

Furthermore, a plurality of the water distribution pieces are perpendicular to the central axis of the resonance pipe and are arranged at intervals.

Furthermore, the air conditioner also comprises a silencing layer, wherein the silencing layer is arranged in the resonance chamber.

Furthermore, the resonance chamber structure further comprises a plurality of partition plates, wherein the partition plates are arranged in the resonance chamber at intervals and used for dividing the resonance chamber to form a plurality of resonance cavities.

Compared with the prior art, the beneficial effects of the utility model include: the utility model discloses a tail gas processing apparatus is integrated to have gas-liquid separation mechanism and noise cancelling mechanism, through set up the water knockout drum in the resonance pipe of fretwork form, can reduce tail row's noise in separating automobile exhaust liquid water, the gas and the liquid that get into the resonance pipe can be blockked by the water knockout drum, wherein, the through-hole of noise accessible resonance pipe gets into the resonant cavity and carries out the amortization, liquid then the striking is intercepted on the water knockout drum, gather to the bottom of resonance pipe at last, so that the bottom of going into the resonant cavity through resonance pipe bottom through-hole is discharged by the drain pipe again, the integrated level of gas-liquid separation structure and noise cancelling structure is high, moreover, the steam generator is simple in structure, high durability and convenient use.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a fuel cell automobile exhaust treatment system according to the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the present invention, a fuel cell automobile exhaust treatment system;

fig. 3 is an assembly schematic diagram of an embodiment of the present invention, a fuel cell automobile exhaust gas treatment system.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.

Referring to fig. 1 and 2, the utility model provides a fuel cell automobile exhaust processing system, it includes canceling release mechanical system 1, gas-liquid separation mechanism 2 and spiral intake pipe 3, place in gas-liquid separation mechanism 2 canceling release mechanical system 1, spiral intake pipe 3 set up in canceling release mechanical system 1's outer wall is located the entry end of canceling release mechanical system 1.

Noise that amortization mechanism 1 produced when being used for eliminating fuel cell automobile exhaust emission, gas-liquid separation mechanism 2 is built in the amortization room of amortization mechanism 1 and is formed with the gas-liquid circulation channel that can increase the tail gas circulation time in, liquid water droplet separation end among the gas-liquid separation mechanism 2 can also guide the noise to get into the amortization room when carrying out gas-liquid separation, spiral intake pipe 3 is installed to the entry end of amortization room and is connected to the exhaust emission mouth of car, a tail gas for one-way receipt car emission, avoid the tail gas backward flow in the amortization room.

Referring to fig. 3, the silencing mechanism 1 includes a box 11 and a resonance tube 12, the box 11 is hollow, and the two sides of the box in the length direction are respectively provided with an air inlet 111 and an air outlet 112, the resonance tube 12 is arranged in the box 11, and the two ends of the resonance tube are respectively communicated to the air inlet 111 and the air outlet 112, so that the tail gas flows through the resonance tube 12 and is discharged out of the box 11, the resonance tube 12 is circumferentially provided with a plurality of through holes 121, and a resonance chamber 13 is formed between the inner walls of the box 11. The case 11 is cylindrical, and the diameter of the resonance tube 12 is larger than the air inlet 111 and the air outlet 112.

As a preferred embodiment, the silencing mechanism 1 further includes a silencing layer 14, the silencing layer 14 is disposed on an inner wall of the resonance chamber 13, a plurality of partition plates 15 are further disposed in the resonance chamber 13, and the plurality of partition plates 15 are all disposed in the resonance chamber 13 at intervals and are used for dividing the resonance chamber 13 into a plurality of resonance cavities so as to accelerate noise elimination. Wherein, automobile exhaust gets into resonance pipe 12 from inlet port 111, and the low frequency sound wave can't return to the sound source through resonance pipe 12 in, and the low frequency noise in the tail gas reduces, and through-hole 121 and resonance chamber 13 make the tail gas of flowing through form sound quality, acoustic compliance and acoustic resistance, constitute the acoustic vibration system, reduce energy propagation, and resonance chamber internal surface adhesion noise damping layer 14 for absorb high frequency noise, then can make full frequency channel noise obtain weakening.

The gas-liquid separation mechanism 2 comprises a plurality of water distribution pieces 21 and a plurality of drain pipes 22, the water distribution pieces 21 are arranged in the resonance pipe 12 at intervals along the tail gas flowing direction, any two adjacent water distribution pieces 21 are respectively arranged on the upper portion and the lower portion of the inner wall of the resonance pipe 12 in a staggered mode to supply an S-shaped tail gas flowing channel to be formed in the resonance pipe 12, and the drain pipes 22 are arranged at the bottom of the box body 11. Wherein, the drain pipe 22 is installed to the lowest position of the bottom of the cylindrical box 11, and liquid water drops generated by gas-liquid separation in the resonance pipe 12 can enter the resonance chamber 13 through the through hole 121 of the resonance pipe 12, then gather to the bottom drain pipe along the inner wall of the resonance chamber 13, and finally be discharged by the drain pipe 22.

The water knockout drum 21 can be perpendicular or be on a parallel with the central axis setting of resonance tube 12, the utility model provides an in the embodiment, it is a plurality of the equal perpendicular to of water knockout drum 21 the central axis and the interval of resonance tube 12 set up, can guide the noise to pass through in through-hole 121 gets into resonance chamber 13 when carrying out gas-liquid separation. When the automobile exhaust is discharged, the automobile exhaust enters the resonance pipe 12 through the air inlet at a certain speed, the speed of the exhaust is suddenly reduced, the reduction degree of the flow speed of liquid and gas in the exhaust is different, and liquid water is separated for the first time; liquid water in tail gas strikes the water diversion piece, and the flow direction changes, and because gas-liquid inertia is different, the degree of change of flow direction is different, and liquid water secondary separation, the liquid water that separates flows to resonance chamber 13 through-hole 121, then gathers to drain pipe 22 department along resonance chamber 13 and discharges.

The utility model provides an in the embodiment, spiral intake pipe 3 set up in inlet port 111 department for the one-way conduction of tail gas, this spiral intake pipe 3 is common structure among the prior art, and no longer the repeated description is here.

The utility model provides an in the embodiment, installing port 221 has still been seted up to drain pipe 22's lateral wall, and this tail gas processing system still includes conductivity sensor 4, conductivity sensor 4 warp installing port 221 is inserted and is located drain pipe 22 is used for detecting to flow through the conductivity of water in drain pipe 22 to judge whether car pile operating condition is good.

The utility model provides an in the embodiment, this tail gas processing system still includes collecting pipe 5 and hydrogen and merges into pipe 6, collecting pipe 5 set up in exhaust hole 112 and communicate to resonance tube 12, the one end of hydrogen is gathered into pipe 6 communicate to collecting pipe 5, the other end are connected to the hydrogen discharge port of car for hydrogen concentration can reduce to and follow the tail gas and together discharge outside the car. Wherein, a spiral exhaust pipe can be arranged between the collecting pipe 5 and the exhaust hole 112 to prevent hydrogen from flowing back to the silencing chamber.

The utility model provides an embodiment's theory of operation does: the utility model discloses a tail gas treatment system is including amortization structure and gas-liquid separation structure, and it is all integrated in same box, and automobile exhaust is in by the inlet port admission box, has the gas-liquid separation structure to accomplish the separation of liquid water, then by the drain pipe discharge, and the noise that produces during exhaust emissions then passes through in the inlet port admission box simultaneously, can pass through amortization structure noise reduction when carrying out gas-liquid separation to this is accomplished falling of tail gas and is fallen and dehydration simultaneously.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. A fuel cell automotive exhaust treatment system, comprising:

the gas-liquid separation mechanism comprises a plurality of water distribution pieces and drain pipes, the water distribution pieces are arranged in the resonance pipe at intervals along the tail gas flowing direction, any two adjacent water distribution pieces are respectively connected to the upper portion and the lower portion of the inner wall of the resonance pipe in a staggered mode to supply an S-shaped tail gas circulation channel to be formed in the resonance pipe, and the drain pipes are arranged at the bottom of the box body.

2. The fuel cell automobile exhaust gas treatment system according to claim 1, characterized in that: the air inlet structure further comprises a spiral air inlet pipe, and the spiral air inlet pipe is arranged on the air inlet hole.

3. The fuel cell automobile exhaust gas treatment system according to claim 1, characterized in that: the side wall of the drain pipe is further provided with a mounting opening, and the drain pipe further comprises a conductivity sensor, wherein the conductivity sensor is inserted into the drain pipe through the mounting opening and is used for detecting the conductivity of water flowing through the drain pipe.

4. The fuel cell automobile exhaust gas treatment system according to claim 1, characterized in that: still include the collector pipe, the collector pipe set up in exhaust hole and intercommunication extremely the resonance tube.

5. The fuel cell automobile exhaust gas treatment system according to claim 4, characterized in that: still include the hydrogen and converge into the pipe, the hydrogen is converged and is set up in the lateral wall of collecting pipe and with the collecting pipe is linked together.

6. The fuel cell automobile exhaust gas treatment system according to claim 1, wherein: the box is cylindric.

7. The fuel cell automobile exhaust gas treatment system according to claim 1, characterized in that: the diameter of the resonance tube is larger than the air inlet hole and the air outlet hole.

8. The fuel cell automobile exhaust gas treatment system according to claim 1, characterized in that: the water distribution pieces are perpendicular to the central axis of the resonance pipe and are arranged at intervals.

9. The fuel cell automobile exhaust gas treatment system according to claim 1, characterized in that: the sound attenuation layer is arranged in the resonance chamber.

10. The fuel cell automobile exhaust gas treatment system according to claim 9, characterized in that: the resonance chamber is internally provided with a plurality of baffles which are arranged in the resonance chamber at intervals and used for dividing the resonance chamber to form a plurality of resonance cavities.