Hydrogen fuel cell pneumatic motor energy recovery device

Abstract

The present invention provides a hydrogen fuel cell pneumatic motor energy recovery device, comprising a gear pump, a generator, an air knife injector and a spray water pipe. An air inlet is provided at the left end of the gear pump body, and an exhaust port is provided at the right end of the body; the air inlet pipe of the air knife injector is connected to the air inlet of the body, and the upper air knife edge of the air knife injector is provided on the upper arc-shaped inner wall surface of the body; the lower air knife edge of the air knife injector is provided on the lower arc-shaped inner wall surface of the body, and a spray water pipe is connected to the air inlet pipe of the air knife injector. The high-pressure hydrogen gas ejected by the air knife injector drives the upper gear shaft and the lower gear shaft to rotate, driving the generator to work. The hydrogen fuel cell pneumatic motor energy recovery device of the present invention recovers hydrogen energy with a high pressure difference through the air knife injector, has a simple structure, stable operation and high recovery efficiency.

Description

Technical Field

[0001] The invention relates to a hydrogen fuel cell pneumatic motor energy recovery device, and relates to the technical field of hydrogen fuel cells. Background Art

[0002] Hydrogen fuel cells are power generation devices that directly convert the chemical energy of hydrogen and oxygen into electrical energy. Hydrogen storage tanks typically have pressures of 35MPa and 70MPa. This pressure is typically released through a pressure relief valve before being used to power the fuel cell, wasting significant energy. To improve energy efficiency, a simple, leak-free pneumatic motor energy recovery device is urgently needed to recover the energy from the high-pressure hydrogen for power generation or to drive a hydrogen circulation pump. Summary of the Invention

[0003] The purpose of the present invention is to provide a hydrogen fuel cell pneumatic motor energy recovery device, which recovers the energy of high-pressure hydrogen to generate electricity or drive a hydrogen circulation pump.

[0004] In view of the above technical problems, the present invention provides a hydrogen fuel cell pneumatic motor energy recovery device, including a gear pump, a generator and an air knife injector. The bearing supports at both ends of the upper gear shaft of the gear pump are arranged in the upper bearing seat, and the bearing supports at both ends of the lower gear shaft of the gear pump are arranged in the lower bearing seat; the left end of the body of the gear pump is provided with an air inlet, and the right end of the body is provided with an exhaust port. The end cover of the generator casing is fixedly provided on the body outside the upper bearing seat, and the rotating shaft of the generator is connected to the shaft body of the upper gear shaft. The air inlet pipe of the air knife injector is connected to the air inlet of the body, and the upper air knife edge of the air knife injector is provided on the upper arc-shaped inner wall surface of the body; the lower air knife edge of the air knife injector is provided on the lower arc-shaped inner wall surface of the body; the high-pressure hydrogen gas ejected by the air knife injector drives the upper gear shaft and the lower gear shaft to rotate.

[0005] Preferably, the air inlet pipe of the air knife injector is connected to a water jet pipe, which is a Venturi pipe. The pipe body of the water jet pipe is connected to a water inlet pipe, and a one-way valve is provided on the water inlet pipe.

[0006] Preferably, the magnetic disk is mounted on the shaft head of the upper gear shaft, and a shielding sleeve is provided on the outside of the magnetic disk; a magnetor is provided on the rotating shaft of the generator, and the magnetor is provided on the outside of the shielding sleeve.

[0007] Preferably, the impeller of the hydrogen circulation pump is provided on the upper gear shaft of the gear pump, and the upper gear shaft drives the impeller to rotate; a drainage hole is provided at the bottom of the housing of the hydrogen circulation pump, and a liquid storage tank is provided on the outside of the housing; the water inlet pipe of the injection water pipe is connected to the liquid storage tank.

[0008] Beneficial effects

[0009] Based on the above technical solution, the present invention has at least one of the following beneficial effects:

[0010] 1. The hydrogen fuel cell pneumatic motor energy recovery device of the present invention adopts a gear-type pneumatic motor to recover high-pressure hydrogen and utilizes an air knife ejector to solve the technical problem of high pressure, low flow and difficult energy recovery of high-pressure hydrogen;

[0011] 2. The water injection pipe with a Venturi tube structure is used to spray water and high-pressure hydrogen into the motor at the same time, effectively reducing gas leakage;

[0012] 3. The generator adopts shielded magnetic transmission to effectively prevent hydrogen leakage;

[0013] 4. The pneumatic motor is used to drive the hydrogen circulation pump, which effectively solves the problem of hydrogen circulation without leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a working schematic diagram of the hydrogen fuel cell pneumatic motor energy recovery device of the present invention.

[0015] Figure 2 It is a cross-sectional view of the hydrogen fuel cell pneumatic motor energy recovery device of the present invention.

[0016] Figure 3 It is a schematic diagram of the shielded power generation operation of the hydrogen fuel cell pneumatic motor energy recovery device of the present invention.

[0017] Figure 4 This is a working diagram of the hydrogen circulation pump of the hydrogen fuel cell pneumatic motor energy recovery device of the present invention.

[0018] Description of the accompanying drawings

[0019] 101-gear pump; 102-machine body; 105-air inlet; exhaust port 106; 201-upper gear shaft; 301-lower gear shaft; 401-air knife injector; 402-air inlet pipe; 403-upper air knife edge; 404-lower air knife edge; 405-arc-shaped inner wall surface; 406-lower arc-shaped inner wall surface; 411-injection water pipe; 501-magnetic disk; 502-shielding sleeve; 504-hydrogen circulation pump; 505-impeller; 507-housing; 508-drain hole; 509-liquid storage tank; 601-generator; 602-housing; 603-end cover; 605-magnetic device; 606-rotating shaft; 702-water inlet pipe; 703-one-way valve. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0021] like Figure 1 、 Figure 2 As shown, the hydrogen fuel cell pneumatic motor energy recovery device includes a gear pump 101, a generator 601, an air knife ejector 401 and an ejection water pipe 411. The upper gear shaft 201 of the gear pump 101 is supported by bearings at both ends in the upper bearing seat, and the lower gear shaft 301 is supported by bearings at both ends in the lower bearing seat; the left end of the body 102 of the gear pump 101 is provided with an air inlet 105, and the right end of the body 102 is provided with an exhaust port 106. Figure 2 As shown, the end cover 603 of the generator 601 is fixedly mounted on the body 102 outside the upper bearing seat 103, and the rotating shaft 606 of the generator 601 is connected to the shaft of the upper gear shaft 201. Figure 1 As shown, the air inlet pipe 402 of the air knife injector 401 is connected to the air inlet 105 of the body 102. The upper air knife edge 403 of the air knife injector 401 is arranged on the upper arc-shaped inner wall surface 405 of the body 102; the lower air knife edge 404 of the air knife injector 401 is arranged on the lower arc-shaped inner wall surface 406 of the body 102. The high-pressure hydrogen gas ejected by the air knife injector 401 drives the upper gear shaft 201 and the lower gear shaft 301 to rotate. The air inlet pipe 402 of the air knife injector 401 is connected to the water injection pipe 411, and the water injection pipe 411 is a venturi pipe. The pipe body of the water injection pipe 411 is connected to the water inlet pipe 702, and the water inlet pipe 702 is provided with a one-way valve 703. As shown Figure 3 As shown, the magnetic disk 501 is installed on the shaft head of the upper gear shaft 201, and a shielding sleeve 502 is provided on the outside of the magnetic disk 501; a magnetizer 605 is provided on the rotating shaft 606 of the generator 601, and the magnetizer 605 is provided on the outside of the shielding sleeve 502. The magnetic disk 501 drives the magnetizer 605 to rotate through magnetic force. Figure 4 As shown, the impeller 505 of the hydrogen circulation pump 504 is mounted on the upper gear shaft 201 of the gear pump 101, which drives the impeller 505 to rotate. A drainage hole 508 is provided at the bottom of the housing 507 of the hydrogen circulation pump 504, and a liquid storage tank 509 is provided on the exterior of the housing 507. The water inlet pipe 702 of the water injection pipe 411 is connected to the liquid storage tank 509.

[0022] This concludes the introduction to the embodiments of the present invention.

[0023] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hydrogen fuel cell pneumatic motor energy recovery device, characterized in that: include: A gear pump (101), wherein bearings at both ends of an upper gear shaft (201) are supported in an upper bearing seat, and bearings at both ends of a lower gear shaft (301) are supported in a lower bearing seat; an air inlet (105) is provided at the left end of a body (102) of the gear pump (101), and an exhaust port (106) is provided at the right end of the body (102); A generator (601), wherein the end cover (603) of the housing (602) is fixedly arranged on the body (102) outside the upper bearing seat (103), and the rotating shaft (606) of the generator (601) is connected to the shaft body of the upper gear shaft (201); The air knife ejector (401) has an air inlet pipe (402) communicating with an air inlet (105) of the machine body (102); an upper air knife edge (403) of the air knife ejector (401) is arranged on an upper arc-shaped inner wall surface (405) of the machine body (102); a lower air knife edge (404) of the air knife ejector (401) is arranged on a lower arc-shaped inner wall surface (406) of the machine body (102); and high-pressure hydrogen ejected from the air knife ejector (401) drives the upper gear shaft (201) and the lower gear shaft (301) to rotate.

2. The hydrogen fuel cell pneumatic motor energy recovery device according to claim 1, characterized in that: The air inlet pipe (402) of the air knife ejector (401) is connected to a jet water pipe (411), the jet water pipe (411) being a Venturi pipe. The pipe body of the jet water pipe (411) is connected to a water inlet pipe (702), and a one-way valve (703) is provided on the water inlet pipe (702).

3. The hydrogen fuel cell pneumatic motor energy recovery device according to claim 1, characterized in that: A magnetic disk (501) is mounted on the shaft head of the upper gear shaft (201), and a shielding sleeve (502) is provided on the outside of the magnetic disk (501); a magnetizer (605) is provided on the rotating shaft (606) of the generator (601), and the magnetizer (605) is provided on the outside of the shielding sleeve (502).

4. The hydrogen fuel cell pneumatic motor energy recovery device according to claim 2, characterized in that: An impeller (505) of a hydrogen circulation pump (504) is provided on the upper gear shaft (201) of the gear pump (101), and the upper gear shaft (201) drives the impeller (505) to rotate; a drainage hole (508) is provided at the bottom of a housing (507) of the hydrogen circulation pump (504), and a liquid storage tank (509) is provided outside the housing (507); and a water inlet pipe (702) of the injection water pipe (411) is connected to the liquid storage tank (509).

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