Steam and hydrogen mixer for fuel cell test

Abstract

The invention provides a steam and hydrogen mixer for fuel cell testing, which comprises a testing device body and further comprises steam generation equipment in the testing device body, a mixing tank is arranged at the top of the steam generation equipment, and check mechanisms are arranged in a hydrogen valve pipe, a steam valve pipe and a gas outlet valve pipe. A mixing mechanism is arranged in the mixing tank, a connecting mechanism is arranged on the outer side of the mixing tank, an air pressure detection mechanism is arranged in a cylinder of the connecting mechanism, and a pressure relief mechanism is arranged on the outer side of the cylinder of the connecting mechanism. According to the steam and hydrogen mixer for fuel cell testing, the piston is pushed to displace through the air pressure difference, two sets of alarm devices and the motor are triggered through the piston when the air pressure is too high, the two sets of alarm devices remind a worker of the too high air pressure condition, and the motor drives the sealing assembly to displace so as to relieve pressure; therefore, overvoltage reminding and protection of the device are realized.

Description

Technical Field

[0001] The invention relates to the technical field of fuel cell testing, and in particular to a steam and hydrogen mixer for fuel cell testing. Background Art

[0002] A fuel cell is a chemical device that converts the chemical energy of a fuel directly into electrical energy. It is also called an electrochemical generator. It is the fourth power generation technology after hydroelectric power generation, thermal power generation and atomic power generation. Fuel cells need to undergo high-temperature testing before mass production to verify their reliability.

[0003] Chinese patent CN213032313U discloses a hydrogen mixer, including a channel tube, characterized in that: a hydrogen port is provided at the top of the channel tube, a flange interface is provided at the bottom of the channel tube, a feed port is connected to one side of the top of the channel tube, a baffle is provided inside the feed port, the baffle is fixedly connected to the inner wall of the channel tube, oblique openings are evenly provided on the baffle, a through plate located below the feed port is fixedly provided inside the channel tube, a vertical rotating shaft is provided at the top of the channel tube, a center seat 1 is provided at the top of the rotating shaft for rotational connection, a center seat 2 is provided at the bottom of the rotating shaft passing through the through plate and for rotational connection, a fixing frame connected to the inner wall of the channel tube is fixedly provided on the side walls of the center seat 1 and the center seat 2, an inclined blade is provided on the rotating shaft, and a flow guide port is evenly provided on the through plate. The device drives the blades to rotate by hydrogen and reactants entering from different directions, thereby improving the mixing effect.

[0004] However, this technical solution lacks an air pressure detection structure. During use, it is easy to be affected by unexpected situations such as pipeline blockage or loose air intake valve, which may cause excessive pressure in the mixer, and then there is a risk of tank damage and explosion, which further delays the progress of the operation and cannot guarantee the safety of the equipment. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies of the prior art and provide a steam and hydrogen mixer for fuel cell testing, which realizes overpressure protection function through an air pressure detection mechanism in conjunction with a pressure relief mechanism, thereby solving the problem of lack of an air pressure detection structure.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A steam and hydrogen mixer for fuel cell testing comprises a test device body and a steam generating device within the test device body, a mixing tank is arranged on the top of the steam generating device, a hydrogen valve pipe is connected through the outer side of the mixing tank, a steam valve pipe is connected through the outer side of the mixing tank, an outlet valve pipe is connected through the top of the mixing tank, check mechanisms are arranged inside the hydrogen valve pipe, the steam valve pipe and the outlet valve pipe, a mixing mechanism is arranged inside the mixing tank, a connecting mechanism is arranged outside the mixing tank, an air pressure detection mechanism is arranged inside the cylinder of the connecting mechanism, and a pressure relief mechanism is arranged outside the cylinder of the connecting mechanism.

[0008] Two groups of water storage valve pipes are connected through the bottom of the mixing tank, and the two groups of water storage valve pipes are symmetrically distributed at the bottom of the mixing tank.

[0009] The non-return mechanism includes a non-return inner tube arranged inside the hydrogen valve tube, a non-return sealing outer ring is arranged at one end of the non-return inner tube, a structural air intake plate is fixedly connected to the inside of the non-return inner tube, a retraction spring is fixedly connected to one side of the structural air intake plate, one end of the retraction spring is fixedly connected to the non-return sealing plate, the inner wall of the non-return inner tube is fixedly connected to the non-return sealing inner ring, a plurality of groups of air intake wall grooves are arranged on the outer wall of the other end of the non-return inner tube, the plurality of groups of air intake wall grooves are distributed in an annular manner on the outer wall of the other end of the non-return inner tube, a plurality of groups of guide protrusions are arranged on the outer side of the non-return sealing plate, the plurality of groups of guide protrusions are distributed in an annular manner on the outer side of the non-return sealing plate, a plurality of groups of guide slide grooves are arranged on the inner wall of the non-return inner tube, the plurality of groups of guide slide grooves are distributed in an annular manner on the inner wall of the non-return inner tube, and a sealing member is arranged at one end of the hydrogen valve tube.

[0010] The mixing mechanism includes a mixing motor arranged at the bottom of the mixing tank, a mixing shaft is installed at the top of the output shaft of the mixing motor, two groups of mixing bearings are arranged on the outer side of the mixing shaft, the two groups of mixing bearings are symmetrically distributed on the outer side of the mixing shaft, two groups of bearing stabilizing bars are fixedly connected to the outer side of one group of mixing bearings, the two groups of bearing stabilizing bars are symmetrically distributed on the outer side of one group of mixing bearings, a U-shaped motor frame is arranged at the bottom of the mixing tank, a plurality of groups of mixing blades are fixedly connected to the outer wall of the mixing shaft, and the plurality of groups of mixing blades are distributed in a ring shape on the outer wall of the mixing shaft.

[0011] The mixing mechanism also includes an axial body frame arranged on the outer wall of the mixing shaft, two groups of engaging rod seats are movably connected to the outer side of the axial body frame, the two groups of engaging rod seats are symmetrically distributed on the outer side of the axial body frame, a rubber scraper is installed inside the engaging rod seat, two groups of conical bolts are threadedly connected to one side of the engaging rod seat, the two groups of conical bolts are symmetrically distributed on one side of the engaging rod seat, two groups of telescopic rods are arranged on one side of the engaging rod seat, the two groups of telescopic rods are symmetrically distributed on one side of the engaging rod seat, and a telescopic spring is arranged inside the telescopic rod.

[0012] The connecting mechanism includes an air guide tube that is arranged on the outer wall of the mixing tank and is connected through it, a transparent detection cylinder is arranged on the top of the air guide tube, a cylinder air inlet pipe is connected through the bottom of the transparent detection cylinder, a female connecting seat is arranged on the top of the air guide tube, a sub-connector is arranged on the bottom end of the cylinder air inlet pipe, a plurality of groups of snap-fitting protrusions are arranged on the outer wall of the sub-connector, and the plurality of groups of snap-fitting protrusions are distributed in an annular manner on the outer wall of the sub-connector, a sealing groove is provided on the top of the female connecting seat, a sealing spring is provided inside the sealing groove, a rubber ring is provided on the top of the sealing spring, a plurality of groups of snap-fitting wall grooves are provided on the inner wall of the sealing groove, and the plurality of groups of snap-fitting wall grooves are distributed in an annular manner on the inner wall of the sealing groove, a deflection wall groove is provided on the bottom end of the snap-fitting wall groove, a plurality of groups of scale rings are provided on the outer wall of the mixing tank, and the plurality of groups of scale rings are distributed linearly on the outer wall of the mixing tank.

[0013] The air pressure detection mechanism includes a detection piston arranged inside the transparent detection cylinder, an identification ring is embedded in the outer wall of the detection piston, a structural top plate is fixedly connected to the bottom of the top cover of the transparent detection cylinder, a reset spring is arranged at the bottom of the structural top plate, and spring end rings are arranged at both ends of the reset spring, two groups of assembly seats are fixedly connected to the top of the top cover of the transparent detection cylinder, the two groups of assembly seats are symmetrically distributed on the top of the top cover of the transparent detection cylinder, a warning light is installed on the top of one group of assembly seats, and a buzzer is installed on the top of the other group of assembly seats, the top of the bottom plates of the warning light and the buzzer are both threadedly connected to multiple groups of assembly bolts, and the multiple groups of assembly bolts are distributed in a ring shape on the top of the bottom plates of the warning light and the buzzer, two groups of equipment wiring terminals are arranged on the outside of the warning light and the buzzer, the outsides of the two groups of warning lights and the buzzer are symmetrically distributed, and an equipment connecting line is installed between the warning light and the buzzer.

[0014] The air pressure detection mechanism includes a fixed mounting seat arranged at the bottom of the structural top plate, a power conductive block is installed at the bottom of the fixed mounting seat, a fitting block is arranged on the outer side of the power conductive block, a power conductive rod is arranged on the outer side of the fitting block, a power input line is installed at one end of the power conductive rod, an equipment conductive block is also installed at the bottom of the fixed mounting seat, a vacant cavity is formed between the equipment conductive block and the power conductive block, an equipment conductive rod is arranged on the outer side of the equipment conductive block, an equipment wiring copper nose is arranged at one end of the equipment conductive rod, an output wiring copper nose is installed on the outer wall of the equipment wiring copper nose, a locking edge is arranged at the outer opening of the equipment wiring copper nose, a locking bolt is threadedly connected to one side of the locking edge, an equipment input line is installed in the equipment wiring copper nose, an equipment output line is installed on the outer side of the buzzer, a movable mounting seat is arranged on the top of the detection piston, and a movable metal block is installed on the top of the movable mounting seat.

[0015] The pressure relief mechanism includes a pressure relief pipe which is connected through the outer wall of the transparent detection tube, the outer wall of the pressure relief pipe is provided with a plurality of groups of pressure relief wall grooves, and the plurality of groups of pressure relief wall grooves are distributed in an annular manner on the outer wall of the pressure relief pipe, a movable pressure relief plate is movably connected to the interior of the pressure relief pipe, a pressure relief sealing plate is fixedly connected to the inner wall of the pressure relief pipe, a self-locking motor is installed inside the pressure relief pipe, a motor input line is installed on the top of the control end of the self-locking motor, a driving shaft is installed at one end of the output shaft of the self-locking motor, and a docking plate is provided at one end of the driving shaft and the output shaft of the self-locking motor, and a plurality of groups of docking bolts are threadedly connected to one side of the docking plate, and the plurality of groups of docking bolts are distributed in an annular manner on one side of the docking plate, two groups of driving bearing rods are fixedly connected to the inner wall of the pressure relief pipe, and the two groups of driving bearing rods are symmetrically distributed on the inner wall of the pressure relief pipe, a plurality of groups of bearing balls are movably connected to the interior of the driving bearing rod, and the plurality of groups of bearing balls are distributed in an annular manner inside the driving bearing rod, and a driving gear is fixedly connected to the outer wall of the driving shaft.

[0016] The pressure relief mechanism includes a support sleeve arranged inside the pressure relief pipe, a traction rod is movably connected inside the support sleeve, a driven rack is fixedly connected to the top of the traction rod, a movable wall groove is opened on the top of the support sleeve, a connecting block is provided at one end of the traction rod, and the traction rod is fixedly connected to the movable pressure relief plate through the connecting block.

[0017] The beneficial effects of the present invention are:

[0018] (1) The present invention uses a transparent detection cylinder to detect the piston in the cylinder under the influence of the change of the air pressure difference at both ends, and the air pressure change is known by comparing the marking ring on the outside of the cylinder with the scale ring, so that the user can intuitively know the air pressure.

[0019] (2) The present invention detects that when the gas pressure in the tank is too high, the piston drives the movable metal block to move upward to contact the power conductive block and the equipment conductive block, so that the power input line and the equipment input line are connected, and further the warning light and the buzzer are energized to emit sound and light alarms.

[0020] (3) The present invention supplies power to the self-locking motor by triggering an alarm mode, so that the self-locking motor drives the driving gear on the driving shaft to rotate on the two sets of driving bearing rods, and the driven rack at the top of the traction rod is meshed with the driving gear, thereby driving the traction rod to move in the supporting sleeve, and the traction rod pushes the movable pressure relief plate to move to the tail end of the pressure relief pipe, thereby further making the multiple sets of pressure relief wall grooves unobstructed, and the gas in the mixing tank is discharged to another set of storage units through the multiple sets of pressure relief wall grooves, thereby avoiding excessive air pressure.

[0021] (4) The present invention realizes the non-return of the air inlet and outlet pipes by pressing the non-return sealing plate in the non-return inner tube against the non-return sealing inner ring under the pulling force of the retraction spring. This non-return method does not affect the normal air inlet and outlet of the pipe and can effectively avoid the gas backflow when the valve is closed.

[0022] (5) The present invention realizes the snap-fitting connection by plugging multiple groups of snap-fit ​​protrusions on the sub-connector into multiple groups of snap-fit ​​wall grooves in the sealing groove of the female connector and snapping into the deflection wall groove, and realizes the clamping and sealing by the rebound pressure of the sealing spring and the rubber ring in the sealing groove, thereby avoiding gas leakage and ensuring that the gas in the mixing tank can enter the transparent detection tube for easy detection.

[0023] (6) The present invention drives multiple groups of mixing blades on the mixing shaft to rotate through a mixing motor, thereby stirring and mixing the gas in the tank. At the same time, the outer frame of the shaft drives two groups of rubber scrapers to rotate along the inner wall of the tank to scrape off water droplets adhered to and condensed on the inner wall of the tank. The scraped condensed water will flow into the water storage valve pipe for collection.

[0024] In summary, the present invention has the advantages of high stability and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a steam and hydrogen mixer testing device for fuel cell testing according to the present invention;

[0026] Figure 2 It is a partial structural schematic diagram of a steam and hydrogen mixer testing device for fuel cell testing of the present invention;

[0027] Figure 3 This is a schematic diagram of the overall structure of a steam and hydrogen mixer mixing device for fuel cell testing according to the present invention;

[0028] Figure 4This is a schematic diagram of the cross-sectional structure of a steam and hydrogen mixer for fuel cell testing according to the present invention;

[0029] Figure 5 This is a schematic diagram of the overall structure of a mixing pipeline of a steam and hydrogen mixer for fuel cell testing according to the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of a non-return mechanism of a steam and hydrogen mixer for fuel cell testing according to the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of a mixing mechanism of a steam and hydrogen mixer for fuel cell testing according to the present invention;

[0032] Figure 8 This is a schematic diagram of the overall structure of a steam and hydrogen mixer detection assembly for fuel cell testing according to the present invention;

[0033] Fig. 9 This is a schematic diagram of the structure of a connection mechanism of a steam and hydrogen mixer for fuel cell testing according to the present invention;

[0034] Fig.10 This is a schematic diagram of the explosion structure of a steam and hydrogen mixer detection assembly for fuel cell testing according to the present invention;

[0035] Fig.11 This is a schematic diagram of the overall structure of a gas pressure detection mechanism for a steam and hydrogen mixer for fuel cell testing according to the present invention;

[0036] Fig.12 This is a partial structural schematic diagram of a gas pressure detection mechanism of a steam and hydrogen mixer for fuel cell testing according to the present invention;

[0037] Fig.13 This is a schematic diagram of the structure of a steam and hydrogen mixer wiring assembly for fuel cell testing according to the present invention;

[0038] Fig.14 This is a schematic diagram of the overall structure of a pressure relief mechanism for a steam and hydrogen mixer for fuel cell testing according to the present invention;

[0039] Fig.15 This is a schematic cross-sectional structure diagram of a pressure relief mechanism of a steam and hydrogen mixer for fuel cell testing according to the present invention;

[0040] Fig.16 The present invention is a schematic diagram of the disassembled structure of a steam and hydrogen mixer pressure relief assembly for fuel cell testing.

[0041] The accompanying drawings of the present application are marked as follows: 1. test device body; 101. steam generating device; 102. mixing tank; 2. hydrogen valve pipe; 3. steam valve pipe; 4. outlet valve pipe; 5. water storage valve pipe; 6. check mechanism; 601. check inner pipe; 602. check seal outer ring; 603. structural air inlet plate; 604. retraction spring; 605. check seal plate; 606. check seal inner ring; 607. air inlet wall groove; 608. guide protrusion; 609. guide slide groove; 610. seal; 7. mixing mechanism; 701. mixing motor; 702. mixing shaft; 703. mixing bearing; 704 , bearing stabilizer bar; 705, U-shaped motor frame; 706, mixing blade; 707, shaft outer frame; 708, snap-fit ​​rod seat; 709, rubber scraper; 710, conical bolt; 711, telescopic rod; 712, telescopic spring; 8, connecting mechanism; 801, air guide tube; 802, transparent detection cylinder; 803, cylinder air inlet pipe; 804, female connecting seat; 805, sub-connector; 806, snap-fit ​​protrusion; 807, sealing groove; 808, sealing spring; 809, rubber ring; 810, snap-fit ​​wall groove; 811, deflection wall groove; 812, scale ring; 9, air pressure detection mechanism; 901, detection piston; 902, identification ring; 903, structural top plate; 904, reset spring; 905, spring end ring; 906, assembly seat; 907, warning light; 908, buzzer; 909, assembly bolt; 910, equipment terminal; 911, equipment connecting line; 912, fixed mounting seat; 913, power conductive block; 914, fitting block; 915, power conductive rod; 916, power input line; 917, equipment conductive block; 918, vacant cavity; 919, equipment conductive rod; 920, equipment wiring copper nose; 921, output wiring copper nose; 922, locking edge; 923, locking bolt; 924, equipment output Inlet line; 925, equipment output line; 926, movable mounting seat; 927, movable metal block; 10, pressure relief mechanism; 1001, pressure relief pipe; 1002, pressure relief wall groove; 1003, movable pressure relief plate; 1004, pressure relief sealing plate; 1005, self-locking motor; 1006, motor input line; 1007, driving shaft; 1008, docking plate; 1009, docking bolt; 1010, driving bearing rod; 1011, bearing ball; 1012, driving gear; 1013, supporting sleeve; 1014, traction rod; 1015, driven rack; 1016, movable wall groove; 1017, connecting block. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] Example: Figure 1-Figure 16 As shown, this embodiment provides a steam and hydrogen mixer for fuel cell testing, including a test device body 1, and also includes a steam generating device 101 in the test device body 1, a mixing tank 102 is arranged on the top of the steam generating device 101, a hydrogen valve pipe 2 is penetrated and connected to the outer side of the mixing tank 102, a steam valve pipe 3 is penetrated and connected to the outer side of the mixing tank 102, an outlet valve pipe 4 is penetrated and connected to the top of the mixing tank 102, a check mechanism 6 is arranged inside the hydrogen valve pipe 2, the steam valve pipe 3 and the outlet valve pipe 4, a mixing mechanism 7 is arranged inside the mixing tank 102, a connecting mechanism 8 is arranged on the outside of the mixing tank 102, an air pressure detection mechanism 9 is arranged inside the cylinder of the connecting mechanism 8, and a pressure relief mechanism 10 is arranged on the outside of the cylinder of the connecting mechanism 8.

[0046] Among them, the test device body 1 is a fuel cell test device, which generates steam through a steam generating device 101 and injects the steam into a mixing tank 102 through a steam valve tube 3, and injects hydrogen into the mixing tank 102 through a hydrogen valve tube 2, thereby facilitating the air intake of the mixing tank 102, and the air outlet valve tube 4 is a gas discharge pipeline for the mixed gas. The arrangement of valves on the multiple groups of pipelines facilitates the user to control the air inlet and outlet.

[0047] Two groups of water storage valve pipes 5 are connected through the bottom of the mixing tank 102 , and the two groups of water storage valve pipes 5 are symmetrically distributed at the bottom of the mixing tank 102 .

[0048] Among them, the setting of two groups of water storage valve pipes 5 can collect and store the water condensed from steam through the pipe at the top of the valve, and conveniently discharge the condensed water through the valve to avoid water accumulation affecting the inlet and outlet air of the tank pipe.

[0049] The non-return mechanism 6 comprises a non-return inner tube 601 arranged inside the hydrogen valve tube 2, a non-return sealing outer ring 602 is arranged at one end of the non-return inner tube 601, a structural air inlet plate 603 is fixedly connected to the inside of the non-return inner tube 601, a retraction spring 604 is fixedly connected to one side of the structural air inlet plate 603, a non-return sealing plate 605 is fixedly connected to one end of the retraction spring 604, a non-return sealing inner ring 606 is fixedly connected to the inner wall of the non-return inner tube 601, and the outer wall of the other end of the non-return inner tube 601 is opened. A plurality of groups of air intake wall grooves 607 are provided, and the outer wall of the other end of the non-return inner tube 601 is distributed in a ring shape. A plurality of groups of guide protrusions 608 are provided on the outer side of the non-return sealing plate 605, and the plurality of groups of guide protrusions 608 are distributed in a ring shape on the outer side of the non-return sealing plate 605. A plurality of groups of guide grooves 609 are provided on the inner wall of the non-return inner tube 601, and the plurality of groups of guide grooves 609 are distributed in a ring shape on the inner wall of the non-return inner tube 601. A sealing member 610 is provided at one end of the hydrogen valve tube 2.

[0050] Among them, the non-return inner tube 601 is the non-return component of each group of valve pipelines, which seals one end of the component through the non-return sealing outer ring 602, and provides a retraction tension for the non-return sealing plate 605 through the retraction spring 604 on the structural air inlet plate 603, so that it can be pressed against the non-return sealing inner ring 606, so that multiple groups of air inlet wall grooves 607 cannot be unblocked. When the valve on the pipeline is opened, the pipeline air pressure will be greater than the air pressure in the mixing tank 102, and the retraction force of the retraction spring 604 will be overcome by the air pressure difference, and Pushing the non-return sealing plate 605 to move to the rear end of the non-return inner tube 601 further enables the multiple groups of air intake wall grooves 607 to be unobstructed and realize air intake. When the air pressure is insufficient or the valve is closed, the air intake wall grooves 607 will not be unobstructed, thereby realizing the non-return function of the component; wherein the multiple groups of guide protrusions 608 can be movably connected with the multiple groups of guide slide grooves 609, so as to realize the guiding and limiting of the non-return sealing plate 605 and ensure its stability during movement; wherein the sealing component 610 is the seal at the connection between the hydrogen valve tube 2 and the tank body.

[0051] The mixing mechanism 7 includes a mixing motor 701 arranged at the bottom of the mixing tank 102, a mixing shaft 702 is installed at the top of the output shaft of the mixing motor 701, two groups of mixing bearings 703 are arranged on the outside of the mixing shaft 702, the two groups of mixing bearings 703 are symmetrically distributed on the outside of the mixing shaft 702, two groups of bearing stabilizing rods 704 are fixedly connected to the outside of one group of mixing bearings 703, the two groups of bearing stabilizing rods 704 are symmetrically distributed on the outside of one group of mixing bearings 703, a U-shaped motor frame 705 is arranged at the bottom of the mixing tank 102, a plurality of groups of mixing blades 706 are fixedly connected to the outer wall of the mixing shaft 702, and the plurality of groups of mixing blades 706 are distributed in a ring shape on the outer wall of the mixing shaft 702.

[0052] Among them, the mixing motor 701 can drive the mixing shaft 702 on the two sets of mixing bearings 703 when powered on, so as to achieve stirring and mixing of the gas in the tank through the rotation of multiple sets of mixing blades 706 on the outside of the mixing shaft 702; the two sets of bearing stabilizing rods 704 are used to fix the bearings at the top of the shaft, so as to stabilize the top of the shaft, and the U-shaped motor frame 705 provides support for the mixing motor 701.

[0053] The mixing mechanism 7 also includes an axial outer frame 707 arranged on the outer wall of the mixing shaft 702, and two groups of engaging rod seats 708 are movably connected to the outer side of the axial outer frame 707, and the two groups of engaging rod seats 708 are symmetrically distributed on the outer side of the axial outer frame 707. A rubber scraper 709 is installed inside the engaging rod seat 708, and two groups of conical bolts 710 are threadedly connected to one side of the engaging rod seat 708, and the two groups of conical bolts 710 are symmetrically distributed on one side of the engaging rod seat 708. Two groups of telescopic rods 711 are arranged on one side of the engaging rod seat 708, and the two groups of telescopic rods 711 are symmetrically distributed on one side of the engaging rod seat 708, and a telescopic spring 712 is arranged inside the telescopic rod 711.

[0054] Among them, the outer frame 707 of the shaft body provides support for two sets of snap-fit ​​rod seats 708, and the two sets of snap-fit ​​rod seats 708 are mounting components for the rubber scraper 709, which are fixed by threaded connections of two sets of conical bolts 710 and whose pointed cones can be rotated to penetrate into the rubber scraper 709. The rubber scraper 709 can be tightly attached to the inner wall of the tank through the resilience of the telescopic springs 712 in the two sets of telescopic rods 711, so that the water droplets adhered and condensed on the inner wall of the tank can be scraped off by following the rotation of the shaft body for collection.

[0055] The connecting mechanism 8 includes an air guide tube 801 which is connected to the outer wall of the mixing tank 102, a transparent detection tube 802 is provided at the top of the air guide tube 801, a cylinder air inlet tube 803 is connected to the bottom of the transparent detection tube 802, a female connection seat 804 is provided at the top of the air guide tube 801, a sub-connector 805 is provided at the bottom of the cylinder air inlet tube 803, and a plurality of groups of snap-fitting protrusions 806 are provided on the outer wall of the sub-connector 805, and the plurality of groups of snap-fitting protrusions 806 are distributed in an annular manner on the outer wall of the sub-connector 805. A sealing groove 807 is provided on the top of the seat 804, a sealing spring 808 is provided inside the sealing groove 807, a rubber ring 809 is provided on the top of the sealing spring 808, a plurality of groups of engaging wall grooves 810 are provided on the inner wall of the sealing groove 807, the plurality of groups of engaging wall grooves 810 are distributed in a ring shape on the inner wall of the sealing groove 807, a deflection wall groove 811 is provided at the bottom end of the engaging wall groove 810, a plurality of groups of scale rings 812 are provided on the outer wall of the mixing tank 102, the plurality of groups of scale rings 812 are distributed linearly on the outer wall of the mixing tank 102.

[0056] Among them, the air guide pipe 801 is the gas discharge pipeline in the tank body; the transparent detection cylinder 802 is made of transparent material, the use of which makes it easy for users to check the movement of the inner piston, and the bottom cylinder air inlet pipe 803 is the air inlet unit, which is connected by the insertion of multiple groups of snap-fit ​​protrusions 806 on the sub-connector 805 and multiple groups of snap-fit ​​wall grooves 810 in the sealing groove 807 of the female connector 804 and the snap-fit ​​of the deflection wall groove 811 to achieve snap-fit ​​docking, and the rebound pressure of the sealing spring 808 and the rubber ring 809 in the sealing groove 807 is used to achieve clamping and sealing, thereby avoiding gas leakage and ensuring that the gas in the mixing tank 102 can enter the transparent detection cylinder 802 for easy detection.

[0057] The air pressure detection mechanism 9 includes a detection piston 901 disposed inside a transparent detection cylinder 802, an identification ring 902 is embedded in the outer wall of the detection piston 901, a structural top plate 903 is fixedly connected to the bottom of the top cover of the transparent detection cylinder 802, a reset spring 904 is disposed at the bottom of the structural top plate 903, and spring end rings 905 are disposed at both ends of the reset spring 904, and two groups of assembly seats 906 are fixedly connected to the top of the top cover of the transparent detection cylinder 802. The two groups of assembly seats 906 are symmetrically distributed on the top of the top cover of the transparent detection cylinder 802, and the top of one group of assembly seats 906 is fixedly connected to the top of the top cover of the transparent detection cylinder 802. A warning light 907 is installed on the top of the other assembly seat 906, and a buzzer 908 is installed on the top of the bottom plate of the warning light 907 and the buzzer 908. Multiple groups of assembly bolts 909 are threadedly connected to the top of the bottom plate of the warning light 907 and the buzzer 908. The multiple groups of assembly bolts 909 are distributed in a ring shape on the top of the bottom plate of the warning light 907 and the buzzer 908. Two groups of equipment wiring terminals 910 are provided on the outside of the warning light 907 and the buzzer 908. The outsides of the two groups of warning lights 907 and the buzzer 908 are symmetrically distributed. An equipment connecting line 911 is installed between the warning light 907 and the buzzer 908.

[0058] Among them, the use of the detection piston 901 can be raised and lowered by the changes in the air pressure in the transparent detection tube 802 and the air pressure in the mixing tank 102, and the change in air pressure can be known by comparing the movement of the identification ring 902 with the multiple sets of scale rings 812; when the air pressure in the tank is too high, the air pressure at the bottom of the detection piston 901 will be much higher than the top, so that the detection piston 901 can overcome the rebound force of the reset spring 904 and move upward; the two sets of assembly seats 906 are installation components for the warning light 907 and the buzzer 908, which are realized by threaded connection between multiple sets of assembly bolts 909 and the threaded holes at the top thereof, so as to facilitate the user's maintenance and disassembly of the equipment; the two sets of equipment terminal 910 are equipment wiring components, and the use of the equipment connecting line 911 connects the two sets of equipment to ensure that the two sets of equipment can be triggered at the same time.

[0059] The air pressure detection mechanism 9 includes a fixed mounting seat 912 arranged at the bottom of the structural top plate 903, a power conductive block 913 is installed at the bottom of the fixed mounting seat 912, a chimeric block 914 is arranged on the outside of the power conductive block 913, a power conductive rod 915 is arranged on the outside of the chimeric block 914, a power input line 916 is installed at one end of the power conductive rod 915, and a device conductive block 917 is also installed at the bottom of the fixed mounting seat 912, a vacant cavity 918 is formed between the device conductive block 917 and the power conductive block 913, and a device conductive block 917 is arranged on the outside of the device conductive block 917. Rod 919, one end of the device conductive rod 919 is provided with a device wiring copper nose 920, the outer wall of the device wiring copper nose 920 is installed with an output wiring copper nose 921, the outer opening of the device wiring copper nose 920 is provided with a locking edge 922, one side of the locking edge 922 is threadedly connected with a locking bolt 923, a device input line 924 is installed in the device wiring copper nose 920, a device output line 925 is installed on the outside of the buzzer 908, a movable mounting seat 926 is provided on the top of the detection piston 901, and a movable metal block 927 is installed on the top of the movable mounting seat 926.

[0060] Among them, the fixed mounting seat 912 is a power conductive block 913 and an equipment conductive block 917, and the vacant cavity 918 between the two groups of conductive blocks prevents the two groups of conductive blocks from contacting each other, so that when the air pressure in the mixing tank 102 cannot reach the threshold, the power input line 916 and the equipment input line 924 cannot be connected. When the tank air pressure is too high, the detection piston 901 will overcome the rebound force of the reset spring 904 and drive the movable metal block 927 on the movable mounting seat 926 to move up and contact the two groups of conductive blocks, thereby connecting the power input line 916 and the equipment input line 924, further energizing the warning light 907 and the buzzer 908, and then reminding the staff through the sound and light alarm of the two groups of equipment; the equipment wiring copper nose 920 and the output wiring copper nose 921 are the connecting parts of the corresponding wiring harness, which are locked by the threaded connection of the locking bolt 923 on the locking edge 922 and its matching nut, thereby facilitating the user to install and disassemble the wiring harness.

[0061] The pressure relief mechanism 10 includes a pressure relief pipe 1001 which is connected to the outer wall of the transparent detection tube 802, and the outer wall of the pressure relief pipe 1001 is provided with a plurality of pressure relief wall grooves 1002, and the plurality of pressure relief wall grooves 1002 are distributed in a ring shape on the outer wall of the pressure relief pipe 1001, and the interior of the pressure relief pipe 1001 is movably connected with a movable pressure relief plate 1003, and the inner wall of the pressure relief pipe 1001 is fixedly connected with a pressure relief sealing plate 1004, and a self-locking motor 1005 is installed inside the pressure relief pipe 1001, and a motor input line 1006 is installed on the top of the control end of the self-locking motor 1005, and a driving shaft 1007 is installed at one end of the output shaft of the self-locking motor 1005, and the driving shaft 100 7 and one end of the output shaft of the self-locking motor 1005 are both provided with a docking plate 1008, one side of the docking plate 1008 is threadedly connected to multiple groups of docking bolts 1009, and the multiple groups of docking bolts 1009 are distributed in a ring shape on one side of the docking plate 1008, the inner wall of the pressure relief pipe 1001 is fixedly connected with two groups of driving bearing rods 1010, and the two groups of driving bearing rods 1010 are symmetrically distributed on the inner wall of the pressure relief pipe 1001, and the inner part of the driving bearing rod 1010 is movably connected with multiple groups of bearing balls 1011, and the multiple groups of bearing balls 1011 are distributed in a ring shape inside the driving bearing rod 1010, and the outer wall of the driving shaft 1007 is fixedly connected with a driving gear 1012.

[0062] Among them, the pressure relief pipe 1001 is the exhaust pipe of the transparent detection tube 802 and the mixing tank 102. The motor input line 1006 on the self-locking motor 1005 in the pipe is connected to the equipment conductive rod 919 through the output wiring copper nose 921, so that when the air pressure is too high and the circuit is energized, the self-locking motor 1005 can be powered to drive the driving gear 1012 on the driving shaft 1007 to rotate on the two sets of driving bearing rods 1010; the threaded holes on the docking plate 1008 can be threadedly connected with multiple sets of docking bolts 1009, so as to realize the docking of the motor output shaft and the driving shaft 1007, and ensure the stable transmission of the motor power.

[0063] The pressure relief mechanism 10 includes a support sleeve 1013 arranged inside the pressure relief pipe 1001, and a traction rod 1014 is movably connected inside the support sleeve 1013. A driven rack 1015 is fixedly connected to the top of the traction rod 1014. A movable wall groove 1016 is opened on the top of the support sleeve 1013, and a connecting block 1017 is provided at one end of the traction rod 1014. The traction rod 1014 is fixedly connected to the movable pressure relief plate 1003 through the connecting block 1017.

[0064] Among them, the traction rod 1014 can be movably connected with the support sleeve 1013, and the driven rack 1015 at the top thereof can be engaged with the driving gear 1012, so that the traction rod 1014 can be driven to slide in the support sleeve 1013 by the rotation of the driving shaft 1007, and then the movable pressure relief plate 1003 is pushed to move to the tail end of the pressure relief pipe 1001 through the traction rod 1014, thereby further making the multiple groups of pressure relief wall grooves 1002 unobstructed, and the gas in the mixing tank 102 is discharged to another group of storage units through the multiple groups of pressure relief wall grooves 1002 to avoid excessive air pressure.

[0065] Working principle:

[0066] Before use, the user connects the circuit, and aligns the sub-connector 805 on the air inlet pipe 803 at the bottom end of the transparent detection tube 802 with the sealing groove 807 on the female connector 804 outside the air guide tube 801, and makes the multiple groups of snap-fitting protrusions 806 enter its bottom along the multiple groups of snap-fitting wall grooves 810, and then deflects the sub-connector 805 so that the group of snap-fitting protrusions 806 enter the deflection wall groove 811. When plugging, the sub-connector 805 will squeeze the sealing spring 808 and the rubber ring 809 in the sealing groove 807, and achieve clamping and sealing through its resilience, thereby completing the docking of the transparent detection tube 802 and the mixing tank 102;

[0067] Then the user turns on the steam generating device 101 and opens the valves on the hydrogen valve pipe 2 and the steam valve pipe 3, and injects a certain amount of steam and hydrogen into the mixing tank 102. When the pipeline is injected with gas, the air pressure in the hydrogen valve pipe 2 and the steam valve pipe 3 increases and the non-return sealing plate 605 in the non-return inner pipe 601 overcomes the return force of the retraction spring 604 and pushes the non-return sealing plate 605 to move to the tail end of the non-return inner pipe 601, further making the multiple groups of air intake wall grooves 607 unobstructed and realizing air intake. When the gas injection is completed, the valve is closed, and at the same time, the gas will be injected into the transparent detection tube 802 through the air guide pipe 801 for air pressure detection;

[0068] Then the user powers on the mixing motor 701. When the mixing motor 701 is powered on, it drives the multiple mixing blades 706 on the mixing shaft 702 to rotate, so as to mix the gas in the tank. At the same time, the shaft outer frame 707 drives two groups of rubber scrapers 709 to rotate along the inner wall of the tank to scrape off the water droplets adhered to the inner wall of the tank. The scraped condensed water will flow into the water storage valve pipe 5 for collection.

[0069] During the gas injection and mixing process, when the air pressure in the tank is low, the detection piston 901 will be pushed up and down in the transparent detection tube 802 by the air pressure difference at both ends. The user can learn about the change of air pressure by comparing the movement of the air outer identification ring 902 with the multiple groups of scale rings 812. When the air pressure in the tank is too high and reaches the threshold, the air pressure at the bottom of the detection piston 901 will be much higher than the top, so that the detection piston 901 overcomes the rebound force of the reset spring 904 and drives the movable metal block 927 on the movable mounting seat 926 to move up and contact the power conductive block 913 and the equipment conductive block 917, so that the power input line 916 and the equipment input line 924 are connected, and further the warning light 907 and the buzzer 908 are energized to emit two sets of sound and light alarms;

[0070] When the air pressure is too high, the power input line 916 is connected to the motor input line 1006 and supplies power to the self-locking motor 1005, so that the drive gear 1012 on the drive shaft 1007 rotates on the two sets of drive bearing rods 1010, and the driven rack 1015 at the top of the traction rod 1014 is meshed with the drive gear 1012, so that the traction rod 1014 can be driven to move in the support sleeve 1013, and then the movable pressure relief plate 1003 is pushed to move to the tail end of the pressure relief pipe 1001 through the traction rod 1014, so that the multiple sets of pressure relief wall grooves 1002 are further unblocked, and the gas in the mixing tank 102 is released to another set of storage units through the multiple sets of pressure relief wall grooves 1002, so as to avoid excessive air pressure;

[0071] After the mixing is completed, the user opens the gas outlet valve pipe 4 to discharge the mixed gas, and after the discharge, opens the valve on the water storage valve pipe 5 to discharge the collected condensed water.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steam and hydrogen mixer for fuel cell testing, comprising a testing device body (1), characterized in that: The test device also comprises a steam generating device (101) in the test device body (1), a mixing tank (102) is arranged on the top of the steam generating device (101), a hydrogen valve pipe (2) is connected through the outside of the mixing tank (102), a steam valve pipe (3) is connected through the outside of the mixing tank (102), a gas outlet valve pipe (4) is connected through the top of the mixing tank (102), a check mechanism (6) is arranged inside the hydrogen valve pipe (2), the steam valve pipe (3) and the gas outlet valve pipe (4), a mixing mechanism (7) is arranged inside the mixing tank (102), a connecting mechanism (8) is arranged outside the mixing tank (102), an air pressure detection mechanism (9) is arranged inside the cylinder of the connecting mechanism (8), and a pressure relief mechanism (10) is arranged outside the cylinder of the connecting mechanism (8).

2. A fuel cell testing steam and hydrogen mixer according to claim 1, characterized in that: Two groups of water storage valve pipes (5) are connected through the bottom of the mixing tank (102), and the two groups of water storage valve pipes (5) are symmetrically distributed at the bottom of the mixing tank (102).

3. A fuel cell testing steam and hydrogen mixer according to claim 1, characterized in that: The non-return mechanism (6) comprises a non-return inner tube (601) arranged inside the hydrogen valve tube (2), one end of the non-return inner tube (601) is provided with a non-return outer ring (602), the inside of the non-return inner tube (601) is fixedly connected with a structural air intake plate (603), one side of the structural air intake plate (603) is fixedly connected with a retraction spring (604), one end of the retraction spring (604) is fixedly connected with a non-return sealing plate (605), the inner wall of the non-return inner tube (601) is fixedly connected with a non-return inner ring (606), and the outer wall of the other end of the non-return inner tube (601) is opened. A plurality of groups of air intake wall grooves (607) are provided, and the plurality of groups of air intake wall grooves (607) are distributed in an annular manner on the outer wall of the other end of the non-return inner tube (601); a plurality of groups of guide protrusions (608) are provided on the outer side of the non-return sealing plate (605), and the plurality of groups of guide protrusions (608) are distributed in an annular manner on the outer side of the non-return sealing plate (605); a plurality of groups of guide grooves (609) are provided on the inner wall of the non-return inner tube (601), and the plurality of groups of guide grooves (609) are distributed in an annular manner on the inner wall of the non-return inner tube (601); and a sealing member (610) is provided at one end of the hydrogen valve tube (2).

4. A fuel cell testing steam and hydrogen mixer according to claim 1, characterized in that: The mixing mechanism (7) comprises a mixing motor (701) arranged at the bottom of the mixing tank (102); a mixing shaft (702) is installed at the top end of the output shaft of the mixing motor (701); two groups of mixing bearings (703) are arranged on the outer side of the mixing shaft (702); the two groups of mixing bearings (703) are symmetrically distributed on the outer side of the mixing shaft (702); two groups of bearing stabilizing rods (704) are fixedly connected to the outer side of one group of mixing bearings (703); the two groups of bearing stabilizing rods (704) are symmetrically distributed on the outer side of one group of mixing bearings (703); a U-shaped motor frame (705) is arranged at the bottom of the mixing tank (102); a plurality of groups of mixing blades (706) are fixedly connected to the outer wall of the mixing shaft (702); the plurality of groups of mixing blades (706) are annularly distributed on the outer wall of the mixing shaft (702).

5. A fuel cell testing steam and hydrogen mixer according to claim 4, characterized in that: The mixing mechanism (7) further comprises an axial outer frame (707) arranged on the outer wall of the mixing shaft (702); two groups of engaging rod seats (708) are movably connected to the outer side of the axial outer frame (707); the two groups of engaging rod seats (708) are symmetrically distributed on the outer side of the axial outer frame (707); a rubber scraper (709) is installed inside the engaging rod seat (708); two groups of conical bolts (710) are threadedly connected to one side of the engaging rod seat (708); the two groups of conical bolts (710) are symmetrically distributed on one side of the engaging rod seat (708); two groups of telescopic rods (711) are arranged on one side of the engaging rod seat (708); the two groups of telescopic rods (711) are symmetrically distributed on one side of the engaging rod seat (708); and a telescopic spring (712) is arranged inside the telescopic rod (711).

6. A fuel cell testing steam and hydrogen mixer according to claim 1, characterized in that: The connecting mechanism (8) comprises an air guide tube (801) provided on the outer wall of the mixing tank (102) and connected thereto through; a transparent detection tube (802) is provided at the top of the air guide tube (801); a cylinder air inlet tube (803) is connected thereto through the bottom of the transparent detection tube (802); a female connection seat (804) is provided at the top of the air guide tube (801); a sub-connector (805) is provided at the bottom of the cylinder air inlet tube (803); a plurality of groups of snap-fitting protrusions (806) are provided on the outer wall of the sub-connector (805); the plurality of groups of snap-fitting protrusions (806) are distributed in an annular manner on the outer wall of the sub-connector (805); and the female connection seat (804) is provided at the top of the air guide tube (801). A sealing groove (807) is provided at the top of the seat (804), a sealing spring (808) is provided inside the sealing groove (807), a rubber ring (809) is provided at the top of the sealing spring (808), a plurality of groups of engaging wall grooves (810) are provided on the inner wall of the sealing groove (807), the plurality of groups of engaging wall grooves (810) are distributed in an annular manner on the inner wall of the sealing groove (807), a deflection wall groove (811) is provided at the bottom end of the engaging wall groove (810), and a plurality of groups of scale rings (812) are provided on the outer wall of the mixing tank (102), the plurality of groups of scale rings (812) are distributed linearly on the outer wall of the mixing tank (102).

7. A fuel cell testing steam and hydrogen mixer according to claim 6, characterized in that: The air pressure detection mechanism (9) comprises a detection piston (901) arranged inside the transparent detection cylinder (802), the outer wall of the detection piston (901) is embedded with an identification ring (902), the bottom of the top cover of the transparent detection cylinder (802) is fixedly connected to a structural top plate (903), the bottom of the structural top plate (903) is provided with a reset spring (904), and spring end rings (905) are provided at both ends of the reset spring (904), and two groups of assembly seats (906) are fixedly connected to the top of the top cover of the transparent detection cylinder (802), the two groups of assembly seats (906) are symmetrically distributed on the top of the top cover of the transparent detection cylinder (802), and the top of one group of assembly seats (906) is installed A warning light (907) is provided, and a buzzer (908) is installed on the top of another group of the assembly seats (906). The top of the bottom plates of the warning light (907) and the buzzer (908) are both threadedly connected with multiple groups of assembly bolts (909). The multiple groups of assembly bolts (909) are distributed in a ring shape on the top of the bottom plates of the warning light (907) and the buzzer (908). Two groups of equipment connection terminals (910) are provided on the outside of the warning light (907) and the buzzer (908). The outsides of the two groups of the warning lights (907) and the buzzer (908) are symmetrically distributed. A device connection line (911) is installed between the warning light (907) and the buzzer (908).

8. A fuel cell testing steam and hydrogen mixer according to claim 7, characterized in that: The air pressure detection mechanism (9) comprises a fixed mounting seat (912) arranged at the bottom of the structural top plate (903); a power conductive block (913) is installed at the bottom of the fixed mounting seat (912); a fitting block (914) is arranged on the outer side of the power conductive block (913); a power conductive rod (915) is arranged on the outer side of the fitting block (914); a power input line (916) is installed at one end of the power conductive rod (915); a device conductive block (917) is also installed at the bottom of the fixed mounting seat (912); a vacant cavity (918) is formed between the device conductive block (917) and the power conductive block (913); and a device conductive rod (915) is arranged on the outer side of the device conductive block (917). A conductive rod (919), one end of the device conductive rod (919) is provided with a device wiring copper nose (920), an output wiring copper nose (921) is installed on the outer wall of the device wiring copper nose (920), a locking edge (922) is provided at the outer opening of the device wiring copper nose (920), a locking bolt (923) is threadedly connected to one side of the locking edge (922), a device input line (924) is installed in the device wiring copper nose (920), a device output line (925) is installed on the outer side of the buzzer (908), and a movable mounting seat (926) is provided on the top of the detection piston (901), and a movable metal block (927) is installed on the top of the movable mounting seat (926).

9. A fuel cell testing steam and hydrogen mixer according to claim 6, characterized in that: The pressure relief mechanism (10) comprises a pressure relief pipe (1001) which is connected to the outer wall of the transparent detection tube (802), the outer wall of the pressure relief pipe (1001) is provided with a plurality of groups of pressure relief wall grooves (1002), and the plurality of groups of pressure relief wall grooves (1002) are distributed in an annular manner on the outer wall of the pressure relief pipe (1001), the interior of the pressure relief pipe (1001) is movably connected with a movable pressure relief plate (1003), the inner wall of the pressure relief pipe (1001) is fixedly connected with a pressure relief sealing plate (1004), a self-locking motor (1005) is installed inside the pressure relief pipe (1001), a motor input line (1006) is installed at the top of the control end of the self-locking motor (1005), a driving shaft (1007) is installed at one end of the output shaft of the self-locking motor (1005), and the driving shaft (1007) is installed at the output end of the self-locking motor (1005). 07) and one end of the output shaft of the self-locking motor (1005) are both provided with a docking plate (1008), one side of the docking plate (1008) is threadedly connected with multiple groups of docking bolts (1009), and the multiple groups of docking bolts (1009) are distributed in an annular shape on one side of the docking plate (1008), the inner wall of the pressure relief pipe (1001) is fixedly connected with two groups of driving bearing rods (1010), and the two groups of driving bearing rods (1010) are symmetrically distributed on the inner wall of the pressure relief pipe (1001), the interior of the driving bearing rod (1010) is movably connected with multiple groups of bearing balls (1011), and the multiple groups of bearing balls (1011) are distributed in an annular shape inside the driving bearing rod (1010), and the outer wall of the driving shaft (1007) is fixedly connected with a driving gear (1012).

10. A fuel cell testing steam and hydrogen mixer according to claim 9, characterized in that: The pressure relief mechanism (10) comprises a support sleeve (1013) arranged inside the pressure relief pipe (1001), a traction rod (1014) is movably connected inside the support sleeve (1013), a driven rack (1015) is fixedly connected to the top of the traction rod (1014), a movable wall groove (1016) is provided on the top of the support sleeve (1013), a connecting block (1017) is provided at one end of the traction rod (1014), and the traction rod (1014) is fixedly connected to the movable pressure relief plate (1003) via the connecting block (1017).

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