CN218447987U

CN218447987U - Hydrogen gas compensation mechanism for hydrogen fuel cell

Info

Publication number: CN218447987U
Application number: CN202222212035.4U
Authority: CN
Inventors: 刘宜霖; 石磊; 吴镇伸; 王耀国; 李建
Original assignee: Shandong Shenlin Electronic Technology Co ltd
Current assignee: Shandong Shenlin Electronic Technology Co ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-02-03
Anticipated expiration: 2032-08-22

Abstract

The utility model discloses a hydrogen compensation mechanism for hydrogen fuel cell, including hydrogen fuel cell stack and hydrogen storage tank, just hydrogen fuel cell stack including positive pole entry and positive pole export, the top fixedly connected with relief pressure valve of hydrogen storage tank, and the upper end fixedly connected with communicating pipe of relief pressure valve, the other end fixedly connected with jet valve of communicating pipe, and the other end fixedly connected with venturi of jet valve, venturi includes the toper portion that cylinder throat and two symmetries set up, and venturi's the other end is fixed with the positive pole entry, the lateral wall that the positive pole entered the mouth is provided with the flowmeter. This kind of hydrogen compensation mechanism for hydrogen fuel cell can utilize the impact force when hydrogen flows as power, with the hydrogen suction toper portion in the positive pole export, compensates in reentrant positive pole entry, simultaneously, the work silence, energy-concerving and environment-protective more to, small is convenient for arrange.

Description

Hydrogen compensation mechanism for hydrogen fuel cell

Technical Field

The utility model belongs to the technical field of hydrogen fuel cell, specifically speaking relates to hydrogen compensation mechanism for hydrogen fuel cell.

Background

The hydrogen fuel cell has the advantages of environmental protection, compact structure, high current density, low working temperature, high starting speed, use of a non-toxic solid electrolyte membrane and the like, and has huge application potential in various aspects of aerospace, aviation, navigation, electric vehicles and the like.

The publication number CN214068761U discloses a hydrogen supply device for a hydrogen fuel cell, which comprises a hydrogen supply port and an oxygen supply port which are arranged on a hydrogen fuel cell body, wherein a gas cut-off alarm branch, a hydrogen protection branch and a hydrogen standby branch are arranged on the hydrogen supply port, the hydrogen protection branch and the hydrogen standby branch are connected in parallel and then are connected with the gas cut-off alarm branch, the gas cut-off alarm branch comprises a pressure limiting valve and a two-way gas cut-off alarm which are sequentially connected, the two-way gas cut-off alarm is connected with the hydrogen supply port, a hydrogen protection support comprises a hydrogen tank, a filter, a one-way valve, a gas flowmeter and a regulating valve which are sequentially connected, and the hydrogen standby branch comprises a standby hydrogen bottle, a regulating valve II and a pressure limiting valve which are sequentially connected.

This kind of hydrogen fuel cell hydrogen gas supply device passes through the setting of hydrogen warning branch road, can report to the police when the hydrogen supply is interrupted, setting through the reserve branch road of hydrogen, can promptly supply hydrogen when hydrogen supply circuit is interrupted, it is the same with current other hydrogen fuel cell, the hydrogen of hydrogen fuel cell positive pole export can let in hydrogen fuel cell pile positive pole entry through the hydrogen circulating pump, inside the pure hydrogen mixing back rethread hydrogen fuel cell pile of process and hydrogen fuel cell pile entrance, carry out the hydrogen compensation, but the volume of circulating pump is great, be not convenient for the installation arrange, there is the noise simultaneously, and need consume the electric energy, energy-concerving and environment-protective inadequately.

In view of this, the present invention is provided.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model adopts the technical scheme that:

the hydrogen compensation mechanism for the hydrogen fuel cell comprises a hydrogen fuel cell stack and a hydrogen storage tank, wherein the hydrogen fuel cell stack comprises an anode inlet and an anode outlet, the top of the hydrogen storage tank is fixedly connected with a pressure reducing valve, the upper end of the pressure reducing valve is fixedly connected with a communicating pipe, the other end of the communicating pipe is fixedly connected with a jet valve, the other end of the jet valve is fixedly connected with a Venturi tube, the Venturi tube comprises a cylindrical throat part and two symmetrically arranged conical parts, the other end of the Venturi tube is fixed with the anode inlet, the side wall of the anode inlet is provided with a flowmeter, and the side wall of the hydrogen fuel cell stack is provided with an air suction mechanism for performing air suction compensation on hydrogen at the anode outlet;

the air exhaust mechanism comprises a connecting plate fixedly connected to the side wall of the hydrogen fuel cell stack, a fixing ring is fixedly connected to the other end of the connecting plate, a working pipe is fixedly inserted into the fixing ring, an air exhaust pipe is fixedly connected to one end of the working pipe, a first check valve is fixedly connected to the interior of the air exhaust pipe, a first hose is fixedly connected to the other end of the air exhaust pipe, the other end of the first hose is fixed to the side wall of the anode outlet, an air outlet pipe is fixedly connected to the side wall of the working pipe, a second check valve is fixedly connected to the interior of the air outlet pipe, a second hose is fixedly connected to the other end of the air outlet pipe, the other end of the second hose is fixed to the side wall of the conical portion, a piston is slidably connected to the interior of the working pipe through a reset assembly, and the piston is moved through a pushing mechanism.

The reset assembly comprises a compression spring fixedly connected to one end of the piston, and the other end of the compression spring is fixed to the other end of the working pipe.

The pushing mechanism comprises a first rotating shaft which rotates on the side wall of the cylindrical throat part, a disc is fixedly connected to the lower end of the first rotating shaft, a protruding block is arranged on the periphery of the disc in a plurality of arrays, a push rod is inserted into the side wall of the compression spring, one end of the push rod is fixed to one end of the piston, the other end of the push rod penetrates through the end part of the working pipe and slides on the side wall of the protruding block, and the first rotating shaft is driven by a driving mechanism.

The driving mechanism comprises a supporting plate fixedly connected to the inner side wall of the cylindrical throat part, the side wall of the supporting plate is rotatably connected with a rotating fan through a second rotating shaft, and a transmission mechanism is arranged between the second rotating shaft and the first rotating shaft.

The transmission mechanism comprises a driven bevel gear fixedly connected to the upper end of the first rotating shaft, the other end of the second rotating shaft is fixedly connected with a driving bevel gear, and the driving bevel gear is meshed with the driven bevel gear.

The gear ratio of the driving bevel gear to the driven bevel gear is 3:1.

Compared with the prior art, the utility model following beneficial effect has:

the utility model discloses a set up bleed mechanism etc. and impact force when can utilizing hydrogen to flow is power, with the hydrogen suction toper portion in the positive pole export, compensates in the reentrant positive pole entry, simultaneously, the work silence is more energy-concerving and environment-protective to, small is convenient for arrange.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

In the drawings:

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

FIG. 2 is a schematic cross-sectional view of the working tube of the present invention;

FIG. 3 is a schematic cross-sectional view of a cylindrical throat of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 5 is an enlarged schematic view of the structure at B in fig. 3.

In the figure: 1-a hydrogen fuel cell stack; 101-anode inlet; 102-anode outlet; 2-a venturi tube; 201-a cylindrical throat; 202-a conical portion; 3-a fluidic valve; 401-connecting plate; 402-a fixed ring; 403-a working tube; 404-a piston; 405-an extraction tube; 406-a first one-way valve; 407-a first hose; 408-an air outlet pipe; 409-a second one-way valve; 410-a second hose; 501-push rod; 502-a first shaft; 503-a disc; 504-bumps; 601-a support plate; 602-a second shaft; 603-rotating the fan; 701-driven bevel gear; 702-drive bevel gear; 8-a flow meter; 9-a pressure reducing valve; 10-a hydrogen storage tank; 11-communicating tube; 12-compression spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention.

As shown in fig. 1 to 5, the hydrogen compensating mechanism for hydrogen fuel cell comprises a hydrogen fuel cell stack 1 and a hydrogen storage tank 10, wherein the hydrogen fuel cell stack 1 comprises an anode inlet 101 and an anode outlet 102, a pressure reducing valve 9 is fixedly connected to the top of the hydrogen storage tank 10, the pressure reducing valve 9 makes the pressure of hydrogen coming out from the hydrogen storage tank 10 constant, thereby ensuring the working stability, a communicating pipe 11 is fixedly connected to the upper end of the pressure reducing valve 9, a jet valve 3 is fixedly connected to the other end of the communicating pipe 11, the jet valve 3 is connected to the existing controller, the controller controls the opening and closing size of the jet valve 3 according to the hydrogen pressure required by the anode inlet 101, a venturi tube 2 is fixedly connected to the other end of the jet valve 3, the venturi tube 2 comprises a cylindrical throat 201 and two symmetrically arranged conical parts 202, the other end of the Venturi tube 2 is fixed with the anode inlet 101, the flow meter 8 is arranged on the side wall of the anode inlet 101, the flow meter 8 feeds a measured flow value back to the controller, the controller can control the jet valve 3 according to the flow value of the anode inlet 101 to ensure that the hydrogen flow of the anode inlet 101 is stable, an air exhaust mechanism for performing air exhaust compensation on the hydrogen at the anode outlet 102 is arranged on the side wall of the hydrogen fuel cell stack, the impact force generated when the hydrogen flows can be used as power to pump the hydrogen in the anode outlet 102 into the conical part 202 and then into the anode inlet 101 for compensation, and meanwhile, the operation is silent, the energy is saved, the environment is protected, the size is small, and the arrangement is convenient;

the air exhaust mechanism comprises a connecting plate 401 fixedly connected to the side wall of the hydrogen fuel cell stack 1, the other end of the connecting plate 401 is fixedly connected with a fixing ring 402, a working pipe 403 is fixedly inserted in the fixing ring 402, an air exhaust pipe 405 is fixedly connected to one end of the working pipe 403, a first one-way valve 406 is fixedly connected to the air exhaust pipe 405, the conduction direction of the first one-way valve 406 is from the anode outlet 102 to the working pipe 403, a first hose 407 is fixedly connected to the other end of the air exhaust pipe 405, the other end of the first hose 407 is fixed to the side wall of the anode outlet 102, an air outlet pipe 408 is fixedly connected to the side wall of the working pipe 403, a second one-way valve 409 is fixedly connected to the air outlet pipe 408, the conduction direction of the second one-way valve 409 is from the working pipe 403 to the venturi pipe 2, the second one-way valve 409 is arranged to prevent hydrogen in the venturi pipe 2 from flowing back, and a second hose 410 is fixedly connected to the other end of the air outlet pipe 408, the other end of the second hose 410 is fixed with the side wall of the tapered portion 202, the piston 404 is connected in the working tube 403 in a sliding manner through a resetting component, the movement of the piston 404 is pushed by a pushing mechanism, when the device is used, the piston 404 reciprocates in the working tube 403 through the pushing mechanism, when the piston 404 moves in a direction away from the air suction tube 405, negative pressure is formed in the working tube 403, meanwhile, the air suction tube 405 is opened, the second one-way valve 409 is closed, at the moment, hydrogen in the anode outlet 102 enters the working tube 403 after passing through the first hose 407 and the air suction tube 405, when the piston 404 moves in a direction close to the air suction tube 405, the hydrogen in the working tube 403 is squeezed, meanwhile, the air suction tube 405 is closed, the second one-way valve 409 is opened, so that the hydrogen in the working tube 403 after being squeezed enters the tapered portion 202 through the air outlet tube 408 and the second hose 410 for compensation, therefore, the hydrogen in the anode outlet 102 can be pumped into the conical part 202 and then enters the anode inlet 101 for compensation by using the impact force of the hydrogen flowing as the power.

The reset assembly comprises a compression spring 12 fixedly connected to one end of the piston 404, and the other end of the compression spring 12 is fixed to the other end of the working tube 403, so as to reset the movement of the piston 404.

The pushing mechanism comprises a first rotating shaft 502 rotating on the side wall of the cylindrical throat 201, a disc 503 is fixedly connected to the lower end of the first rotating shaft 502, a plurality of protruding blocks 504 arranged in an array are fixedly connected to the peripheral side of the disc 503, the cross section of each protruding block 504 is semicircular, a pushing rod 501 is inserted into the side wall of the compression spring 12, one end of each pushing rod 501 is fixed to one end of the corresponding piston 404, the other end of each pushing rod 501 penetrates through the end portion of the working pipe 403 and slides on the side wall of the corresponding protruding block 504, the first rotating shaft 502 is driven to rotate through the driving mechanism, the first rotating shaft 502 rotates through the driving mechanism, the disc 503 is driven to rotate through rotation of the first rotating shaft 502, when the protruding blocks 504 abut against the end portions of the pushing rods 501, the pistons 404 are pushed to move towards the direction close to the exhaust pipes 405, meanwhile, the compression springs 12 are stretched, and when the end portions of the pushing rods 501 pass over the protruding blocks 504, the pistons 404 can reset under the action of the compression springs 12, and accordingly the pistons 404 move back and forth in the working pipes 403.

The actuating mechanism includes the backup pad 601 of fixed connection at the cylindrical throat 201 inside wall, and the lateral wall of backup pad 601 rotates through second pivot 602 and is connected with and changes fan 603, be provided with drive mechanism between second pivot 602 and the first pivot 502, when using, open jet valve 3, hydrogen in the hydrogen storage tank 10 passes through relief pressure valve 9, communicating pipe 11, get into in the positive pole entry 101 behind jet valve 3 and the venturi 2, meanwhile, when hydrogen gets into venturi 2's cylindrical throat 201, according to the venturi principle, the velocity of flow of hydrogen can accelerate, and, the surface that strikes and changeing fan 603 makes its rotate, the rotation that changes fan 603 drives first pivot 502 through drive mechanism and rotates.

The transmission mechanism comprises a driven bevel gear 701 fixedly connected to the upper end of the first rotating shaft 502, the other end of the second rotating shaft 602 is fixedly connected with a driving bevel gear 702, the driving bevel gear 702 is meshed with the driven bevel gear 701, and the rotation of the rotating fan 603 drives the second rotating shaft 602 and the driving bevel gear 702 to rotate so as to drive the driven bevel gear 701 and the first rotating shaft 502 to rotate.

The gear ratio of the drive bevel gear 702 to the driven bevel gear 701 is 3:1, so that the rotational speed of the first rotating shaft 502 is faster.

When the hydrogen storage device is used, firstly, the jet valve 3 is opened, hydrogen in the hydrogen storage tank 10 enters the anode inlet 101 after passing through the pressure reducing valve 9, the communicating pipe 11, the jet valve 3 and the venturi tube 2, meanwhile, when the hydrogen enters the cylindrical throat part 201 of the venturi tube 2, the flow rate of the hydrogen is accelerated according to the venturi principle, and the hydrogen impacts the surface of the rotating fan 603 to rotate, and the rotation of the rotating fan 603 drives the second rotating shaft 602 and the driving bevel gear 702 to rotate, so that the driven bevel gear 701 and the first rotating shaft 502 are driven to rotate;

the rotation of the first rotating shaft 502 drives the disc 503 to rotate, when the lug 504 abuts against the end of the push rod 501, the push piston 404 moves towards the direction close to the air suction pipe 405, meanwhile, the compression spring 12 is stretched, and when the end of the push rod 501 passes over the lug 504, the piston 404 can reset under the action of the compression spring 12, so that the piston 404 reciprocates in the working pipe 403;

when the piston 404 moves in a direction away from the exhaust tube 405, negative pressure is formed in the working tube 403, the exhaust tube 405 is opened, the second check valve 409 is closed, at the same time, hydrogen in the anode outlet 102 enters the working tube 403 after passing through the first hose 407 and the exhaust tube 405, when the piston 404 moves in a direction close to the exhaust tube 405, the hydrogen in the working tube 403 is extruded, at the same time, the exhaust tube 405 is closed, the second check valve 409 is opened, so that the hydrogen in the working tube 403 is extruded and then enters the conical portion 202 through the outlet tube 408 and the second hose 410 for compensation, and therefore the hydrogen in the anode outlet 102 is pumped into the conical portion 202 and then enters the anode inlet 101 for compensation by using the impact force generated when the hydrogen flows as power.

Claims

1. The hydrogen compensation mechanism for the hydrogen fuel cell comprises a hydrogen fuel cell stack (1) and a hydrogen storage tank (10), wherein the hydrogen fuel cell stack (1) comprises an anode inlet (101) and an anode outlet (102), and is characterized in that the top of the hydrogen storage tank (10) is fixedly connected with a pressure reducing valve (9), the upper end of the pressure reducing valve (9) is fixedly connected with a communicating pipe (11), the other end of the communicating pipe (11) is fixedly connected with a jet valve (3), the other end of the jet valve (3) is fixedly connected with a Venturi tube (2), the Venturi tube (2) comprises a cylindrical throat part (201) and two symmetrically arranged conical parts (202), the other end of the Venturi tube (2) is fixed with the anode inlet (101), the side wall of the anode inlet (101) is provided with a flow meter (8), and the side wall of the hydrogen fuel cell stack is provided with an air extraction mechanism for performing air extraction compensation on hydrogen at the anode outlet (102);

the air exhaust mechanism comprises a connecting plate (401) fixedly connected to the side wall of the hydrogen fuel cell stack (1), the other end of the connecting plate (401) is fixedly connected with a fixing ring (402), a working pipe (403) is inserted into the fixing ring (402), one end of the working pipe (403) is fixedly connected with an air exhaust pipe (405), a first check valve (406) is fixedly connected into the air exhaust pipe (405), a first hose (407) is fixedly connected to the other end of the air exhaust pipe (405), the other end of the first hose (407) is fixed to the side wall of the anode outlet (102), an air outlet pipe (408) is fixedly connected to the side wall of the working pipe (403), a second check valve (409) is fixedly connected into the air outlet pipe (408), a second hose (410) is fixedly connected to the other end of the air outlet pipe (408), the other end of the second hose (410) is fixed to the side wall of the conical portion (202), a piston (404) is slidably connected into the working pipe (403) through a reset assembly, and the piston (404) moves to be pushed through the pushing mechanism.

2. A hydrogen compensating mechanism for hydrogen fuel cell in accordance with claim 1, wherein the returning means comprises a compression spring (12) fixedly connected to one end of the piston (404), and the other end of the compression spring (12) is fixed to the other end of the working tube (403).

3. The hydrogen compensating mechanism for hydrogen fuel cell according to claim 1, wherein the pushing mechanism includes a first rotating shaft (502) rotating on the side wall of the cylindrical throat portion (201), and a disc (503) is fixedly connected to the lower end of the first rotating shaft (502), a plurality of projections (504) arranged in an array are fixedly connected to the circumferential side of the disc (503), and a push rod (501) is inserted into the side wall of the compression spring (12), one end of the push rod (501) is fixed to one end of the piston (404), and the other end of the push rod (501) penetrates through the end of the working tube (403) and slides on the side wall of the projection (504), and the rotation of the first rotating shaft (502) is driven by the driving mechanism.

4. The hydrogen compensating mechanism for hydrogen fuel cell according to claim 3, wherein the driving mechanism comprises a support plate (601) fixedly connected to the inner side wall of the cylindrical throat portion (201), and the side wall of the support plate (601) is rotatably connected with a rotating fan (603) through a second rotating shaft (602), and a transmission mechanism is arranged between the second rotating shaft (602) and the first rotating shaft (502).

5. The hydrogen compensating mechanism for hydrogen fuel cell according to claim 4, wherein the transmission mechanism comprises a driven bevel gear (701) fixedly connected to the upper end of the first rotating shaft (502), the other end of the second rotating shaft (602) is fixedly connected with a driving bevel gear (702), and the driving bevel gear (702) is engaged with the driven bevel gear (701).

6. The hydrogen compensating mechanism for a hydrogen fuel cell according to claim 5, wherein the gear ratio of the drive bevel gear (702) to the driven bevel gear (701) is 3:1.