CN216241287U - Hydrogen circulating pump of fuel cell - Google Patents
Hydrogen circulating pump of fuel cell Download PDFInfo
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- CN216241287U CN216241287U CN202122796004.3U CN202122796004U CN216241287U CN 216241287 U CN216241287 U CN 216241287U CN 202122796004 U CN202122796004 U CN 202122796004U CN 216241287 U CN216241287 U CN 216241287U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses a hydrogen circulating pump of a fuel cell, which comprises a motor, a transmission case and a pump which are sequentially arranged from left to right, and further comprises a driving shaft assembly, a middle shaft assembly and a driven shaft assembly which are arranged in the transmission case; the driving shaft assembly comprises a primary driving gear sleeved on the driving shaft, and the left end of the driving shaft assembly is connected with a rotating shaft of the motor; the intermediate shaft assembly comprises a primary driven gear and a secondary driving gear which are sleeved on the intermediate shaft, and the primary driving gear is meshed with the primary driven gear to perform speed-up transmission; the driven shaft assembly comprises a secondary driven gear sleeved on the driven shaft, the secondary driven gear is meshed with the secondary driving gear, and the transmission ratio is 1: 1; the pump comprises a pump shell, a first rotor and a second rotor which are arranged in the pump shell, wherein the right end of the intermediate shaft is inserted into the second rotor to drive the second rotor to rotate, and the right end of the driven shaft is inserted into the rotor to drive the first rotor to rotate.
Description
Technical Field
The utility model relates to a dry pump technology, in particular to a hydrogen circulating pump of a fuel cell.
Background
The fuel cell automobile is one of the main directions of the future automobile technology development and is also one of the main technical approaches for realizing carbon neutralization and carbon standard reaching in the automobile industry. Hydrogen is used as a main fuel of the fuel cell, and because the conversion efficiency of the electric pile limits, the hydrogen input to the electric pile cannot be fully utilized, so that the excessive or residual hydrogen needs to overflow the electric pile; calculated according to the conversion efficiency of the hydrogen of the current fuel cell of 40-55%, 60-45% of the hydrogen generally overflows from the galvanic pile, which not only increases the use cost of the fuel cell automobile, but also pollutes the atmospheric environment.
With the continuous development of fuel cell technology, the power of the galvanic pile is higher and higher, the flow demand of the hydrogen circulating pump is also higher and higher, and the large-flow circulating pump which can meet the demand of the 60kW galvanic pile on the market at present is still blank.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hydrogen circulating pump of a fuel cell, which improves the output rotating speed, increases the output flow of the pump and solves the problem that a large-flow circulating pump is lacking in the market.
Therefore, the technical scheme adopted by the utility model is as follows: a fuel cell hydrogen circulating pump comprises a motor, a transmission case and a pump which are sequentially arranged from left to right, and further comprises a driving shaft assembly, a middle shaft assembly and a driven shaft assembly which are arranged in the transmission case; the driving shaft assembly comprises a primary driving gear sleeved on the driving shaft, and the left end of the driving shaft assembly is connected with a rotating shaft of the motor; the intermediate shaft assembly comprises a primary driven gear and a secondary driving gear which are sleeved on the intermediate shaft, and the primary driving gear is meshed with the primary driven gear to perform speed-up transmission; the driven shaft assembly comprises a secondary driven gear sleeved on the driven shaft, the secondary driven gear is meshed with the secondary driving gear, and the transmission ratio is 1: 1; the pump comprises a pump shell, a first rotor and a second rotor, wherein the first rotor and the second rotor are arranged in the pump shell in a built-in mode, the right end of the intermediate shaft is inserted into the second rotor to drive the second rotor to rotate, and the right end of the driven shaft is inserted into the second rotor to drive the first rotor to rotate.
Preferably, the driving shaft assembly comprises a driving shaft, and a spline sleeve, a front oil thrower, a primary driving gear and a first bearing which are sequentially sleeved on the driving shaft from left to right, the front oil thrower is arranged to effectively ensure the lubrication of the bearings, a motor rotating shaft mounting hole is formed in the left part of the spline sleeve, and the right part of the spline sleeve is sleeved on the driving shaft, so that the motor rotating shaft drives the driving shaft to rotate;
the middle shaft assembly comprises a middle shaft, a first-stage driven gear, a rear oil throwing disc, a second-stage driving gear, a third bearing and a first sealing ring, wherein the first-stage driven gear, the rear oil throwing disc, the second-stage driving gear, the third bearing and the first sealing ring are sequentially sleeved on the middle shaft from left to right;
driven shaft subassembly includes the driven shaft and turns right from a left side and suit the second grade driven gear, bearing four, the sealing washer one on the driven shaft in proper order, and second grade driven gear makes the jackshaft drive the driven shaft rotatory with the meshing of second grade driving gear, carries out output oil-sealing through sealing washer one and handles, avoids the transmission case that oozes of lubricating oil, and sealed effect is showing, and the structure is firm.
Further preferably, the transmission case comprises a transmission case front cover, a transmission case main body and a transmission case rear cover, and a bearing seat is installed in the transmission case main body through a bolt and a positioning pin and is installed stably.
Further preferably, the pump shell and the front cover of the transmission case, the main body of the transmission case and the rear cover of the transmission case, and the motor and the rear cover of the transmission case are all connected by bolts, so that the structure is firm, and the installation and the disassembly are convenient and rapid.
Further preferably, the spline housing outer lane is equipped with sealing washer two and bearing two, and sealing washer two carries out the input and seals oily processing, and the lubricating oil that effectively avoids preceding oil thrower dish to throw out oozes the transmission case, and the leakproofness is strong, and the spline housing all adopts interference fit with driving shaft, bearing two and spline housing to be connected, and the structure is firm, avoids taking place to drop because of the rotation of driving shaft.
Preferably, the rear oil thrower wheel is connected with the secondary driving gear through bolts, so that the mounting and dismounting are convenient, and the structure is stable; the sealing ring is combined with high-temperature lubricating grease and sleeved on the intermediate shaft and the driven shaft through the sealing ring base, the high-temperature lubrication has good flexibility, high temperature resistance and a lubricating effect, and the kinematic pair can be lubricated and can well seal a kinematic gap of the kinematic pair;
the axial sealing with the front cover of the transmission case is realized through the sealing ring base, the traditional radial sealing structure is converted into end face sealing, and the minimum friction can be ensured under the condition of satisfying reliable sealing by adjusting the interference magnitude with the sealing end face, so that the temperature rise of the system is reduced; adopt interference fit between sealing washer and the sealing washer base, second grade driven gear, sealing washer base also all adopt interference fit to be connected with the driven shaft, connect closely, avoid taking place to break away from because of the rotatory messenger part of driven shaft.
Further preferably, the first rotor and the second rotor adopt a singular three-jaw structure, the volumetric efficiency of the first rotor and the second rotor is about 10% higher than that of the singular two-jaw structure, the first rotor and the right end of the driven shaft and the second rotor and the right end of the intermediate shaft are connected in an interference fit mode and are tightly connected, the rotors are stably and firmly installed, and loosening and falling caused by over-high rotating speed are avoided.
More preferably, the right end of the driven shaft and the right end of the intermediate shaft are both provided with a third seal ring for preventing gas in the pump chamber from entering the transmission case when the pump case is inserted into the front cover of the transmission case.
The utility model has the beneficial effects that: a two-stage transmission mechanism is adopted in the transmission case, a first-stage driving gear is meshed with a first-stage driven gear to perform speed-increasing transmission, the input rotating speed of the motor is increased, the output torque can be reduced, a second-stage driving gear is meshed with a second-stage driven gear to perform 1:1 transmission, and the output flow of the pump is effectively increased due to the fact that the transmission rotating speed is increased under the condition that the discharge capacity is unchanged. The utility model has the characteristics of convenient operation and large output flow of the pump, and is a fuel cell hydrogen circulating pump with great application prospect.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural diagram of the main drive shaft assembly.
Fig. 3 is a structural schematic diagram of the spline housing.
FIG. 4 is a schematic view of the construction of the intermediate shaft assembly.
FIG. 5 is a schematic view of the structure of the transmission housing mounting bearing seat.
Fig. 6 is a schematic structural view of the driven shaft assembly.
Detailed Description
The utility model will be further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1-6, a fuel cell hydrogen circulation pump is composed of a motor a, a transmission case 2, a pump 1, a driving shaft assembly 3, an intermediate shaft assembly 4 and a driven shaft assembly 5, which are arranged from left to right in sequence.
The motor A is provided with a motor controller to control the rotating speed and the flow of the pump 1 through an output instruction, the rotating speed is controlled by adopting an FCU instruction, and the operation is convenient and fast.
The pump 1 is composed of a pump shell 11, a first rotor 12 and a second rotor 13 which are arranged in the pump shell 11, wherein the first rotor 12 and the second rotor 13 adopt a singular three-claw structure.
The transmission case 2 is composed of a transmission case front cover 21, a transmission case main body 22 and a transmission case rear cover 23 which are arranged from right to left in sequence, and a bearing seat 221 is installed in the transmission case main body 22 through bolts and positioning pins.
The pump shell 11 and the transmission case front cover 21, the transmission case main body 22 and the transmission case rear cover 23, and the motor A and the transmission case rear cover 23 are all connected by bolts.
The driving shaft assembly 3, the intermediate shaft assembly 4 and the driven shaft assembly 5 are arranged in parallel, and the axes of the driven shaft assembly 5 and the intermediate shaft assembly 4 are respectively positioned on the upper side and the lower side of the driving shaft assembly 3. The middle shaft assembly 4 drives the second rotor 13 to rotate, and the driven shaft assembly 5 drives the first rotor 12 to rotate.
The left end of the driving shaft assembly 3 is connected with a rotating shaft of a motor A, and the driving shaft assembly 3 comprises a first-level driving gear 33 sleeved on a driving shaft 35.
The driving shaft assembly 3 is specifically composed of a driving shaft 35, a spline sleeve 31, a front oil throwing disc 32, a first-level driving gear 33 and a first bearing 34, wherein the spline sleeve 31, the front oil throwing disc 32, the first-level driving gear 33 and the first bearing 34 are sequentially sleeved on the driving shaft 35 from left to right, a motor rotating shaft mounting hole 311 is formed in the left portion of the spline sleeve 31, and the right portion of the spline sleeve 31 is sleeved on the driving shaft 35 to enable the motor rotating shaft to drive the driving shaft 35 to rotate.
The outer ring of the spline housing 31 is provided with a second sealing ring 312 and a second bearing 313, and the spline housing 31 is connected with the driving shaft 35, the second bearing 313 and the spline housing 31 in an interference fit manner.
The intermediate shaft assembly 4 comprises a first-stage driven gear 41 and a second-stage driving gear 43 which are sleeved on an intermediate shaft 46, and the first-stage driving gear 33 is meshed with the first-stage driven gear 41 to perform speed-increasing transmission.
The intermediate shaft assembly 4 specifically comprises an intermediate shaft 46, a first-stage driven gear 41, a rear oil thrower 42, a second-stage driving gear 43, a third bearing 44 and a first sealing ring 45, wherein the first-stage driven gear 41, the second-stage driving gear 43, the third bearing 44 and the first sealing ring 45 are sequentially sleeved on the intermediate shaft 46 from left to right, the first-stage driven gear 41 is meshed with the first-stage driving gear 33 to enable a driving shaft 35 to drive the intermediate shaft 46 to rotate, and the right end of the intermediate shaft 46 is inserted into a second rotor 13 to drive the second rotor 13 to rotate.
The driven shaft assembly 5 includes a secondary driven gear 51 fitted around a driven shaft 53 and engaged with the secondary driving gear 43.
The driven shaft assembly 5 is specifically composed of a driven shaft 53, a second-stage driven gear 51, a bearing four 52 and a sealing ring one 45, wherein the second-stage driven gear 51, the bearing four 52 and the sealing ring one 45 are sequentially sleeved on the driven shaft 53 from left to right, the second-stage driven gear 51 is meshed with the second-stage driving gear 43 to enable the intermediate shaft 46 to drive the driven shaft 53 to rotate, and the right end of the driven shaft 53 is inserted into the rotor one 12 to drive the rotor one 12 to rotate.
The rear oil thrower disk 42 is connected with the secondary driving gear 43 through bolts, the first sealing ring 45 is combined with high-temperature lubricating grease and sleeved on the intermediate shaft 46 and the driven shaft 53 through the sealing ring base 451, so that end face sealing between the first sealing ring and the transmission case front cover 21 is achieved, and the minimum friction can be guaranteed under the condition of reliable sealing by adjusting the interference magnitude between the first sealing ring and the sealing end face, so that the temperature rise of the system is reduced.
The first sealing ring 45 and the sealing ring base 451 are in interference fit, and the secondary driven gear 51, the sealing ring base 451 and the driven shaft 53 are also connected in interference fit.
The first rotor 12 and the right end of the driven shaft 53, and the second rotor 13 and the right end of the intermediate shaft 46 are connected in an interference fit manner.
When the right end of the driven shaft 53 and the right end of the intermediate shaft 46 are inserted into the pump case 11 from the transmission case front cover 21, a third seal ring for preventing gas in the pump chamber from entering the transmission case 2 is provided.
The method comprises the steps of inputting an FCU command from a motor controller to control the rotating speed of a rotating shaft of a motor, and then carrying out two-stage gear transmission, wherein the first stage is speed-up transmission, the rotating speed of a middle shaft is increased by adjusting N/i1 (the output rotating speed of the N motor and the first-stage transmission ratio of i 1), the output torque N is reduced to Ni1, the reduced Ni1 is required to meet the requirements of pressure rise and ice breaking, the second-stage transmission ratio is set to be i 2-1: 1(i2 second-stage transmission ratio), and under the condition that the discharge capacity of a constant displacement pump is unchanged, the rotating speeds of a first rotor 12 and a second rotor 13 are increased, so that the output flow of the pump is increased.
Claims (8)
1. The utility model provides a fuel cell hydrogen circulating pump, includes motor (A), transmission case (2) and pump (1) that turn right from a left side and set gradually, its characterized in that: the transmission mechanism also comprises a driving shaft assembly (3), a middle shaft assembly (4) and a driven shaft assembly (5) which are arranged in the transmission case (2); the driving shaft assembly (3) comprises a primary driving gear (33) sleeved on a driving shaft (35), and the left end of the driving shaft assembly (3) is connected with a rotating shaft of the motor (A); the middle shaft assembly (4) comprises a first-stage driven gear (41) and a second-stage driving gear (43) which are sleeved on a middle shaft (46), and a first-stage driving gear (33) is meshed with the first-stage driven gear (41) to perform speed-up transmission; the driven shaft assembly (5) comprises a secondary driven gear (51) sleeved on a driven shaft (53), the secondary driven gear (51) is meshed with a secondary driving gear (43) and the transmission ratio is 1: 1; the pump (1) comprises a pump shell (11), a first rotor (12) and a second rotor (13) which are arranged in the pump shell (11), wherein the right end of the intermediate shaft (46) is inserted into the second rotor (13) to drive the second rotor (13) to rotate, and the right end of the driven shaft (53) is inserted into the first rotor (12) to drive the first rotor (12) to rotate.
2. A fuel cell hydrogen circulation pump according to claim 1, characterized in that: the driving shaft assembly (3) comprises a driving shaft (35), and a spline sleeve (31), a front oil thrower (32), a primary driving gear (33) and a bearing I (34) which are sequentially sleeved on the driving shaft (35) from left to right, wherein a motor rotating shaft mounting hole (311) is formed in the left part of the spline sleeve (31), and the right part of the spline sleeve (31) is sleeved on the driving shaft (35) so that the motor rotating shaft drives the driving shaft (35) to rotate; the middle shaft assembly (4) comprises a middle shaft (46), a first-stage driven gear (41), a rear oil thrower (42), a second-stage driving gear (43), a third bearing (44) and a first sealing ring (45), wherein the first-stage driven gear (41) is sequentially sleeved on the middle shaft (46) from left to right, and the first-stage driven gear (41) is meshed with the first-stage driving gear (33) to enable a driving shaft (35) to drive the middle shaft (46) to rotate; driven shaft subassembly (5) include driven shaft (53) and from a left side to right side in proper order suit second grade driven gear (51), bearing four (52), sealing washer one (45) on driven shaft (53), and second grade driven gear (51) and second grade driving gear (43) meshing make jackshaft (46) drive driven shaft (53) rotatory.
3. A fuel cell hydrogen circulation pump according to claim 2, characterized in that: the transmission case (2) comprises a transmission case front cover (21), a transmission case main body (22) and a transmission case rear cover (23) which are sequentially arranged from right to left, and a bearing seat (221) is installed in the transmission case main body (22) through a bolt and a positioning pin.
4. A fuel cell hydrogen circulation pump according to claim 3, characterized in that: the pump shell (11) is connected with the front cover (21) of the transmission case, the transmission case body (22) is connected with the rear cover (23) of the transmission case, and the motor (A) is connected with the rear cover (23) of the transmission case through bolts.
5. A fuel cell hydrogen circulation pump according to claim 4, characterized in that: the outer ring of the spline housing (31) is provided with a second sealing ring (312) and a second bearing (313), and the spline housing (31) is connected with the driving shaft (35), the second bearing (313) and the spline housing (31) in an interference fit mode.
6. A fuel cell hydrogen circulation pump according to claim 5, characterized in that: the rear oil thrower wheel (42) is connected with the secondary driving gear (43) through bolts, a first sealing ring (45) is combined with high-temperature lubricating grease and sleeved on the intermediate shaft (46) and the driven shaft (53) through a first sealing ring base (451), so that end face sealing between the first sealing ring (45) and the transmission case front cover (21) is achieved, interference fit is adopted between the first sealing ring (45) and the first sealing ring base (451), and the secondary driven gear (51), the first sealing ring base (451) and the driven shaft (53) are also connected in interference fit.
7. A fuel cell hydrogen circulation pump according to claim 6, characterized in that: the first rotor (12) and the second rotor (13) are of a singular three-jaw structure, and the first rotor (12) is connected with the right end of the driven shaft (53) in an interference fit mode, and the second rotor (13) is connected with the right end of the intermediate shaft (46) in an interference fit mode.
8. A fuel cell hydrogen circulation pump according to claim 7, characterized in that: and when the right end of the driven shaft (53) and the right end of the intermediate shaft (46) are inserted into the pump shell (11) from the front cover (21) of the transmission case, the right end and the right end of the intermediate shaft are both provided with a third sealing ring for preventing gas in a pump cavity from entering the transmission case (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122796004.3U CN216241287U (en) | 2021-11-16 | 2021-11-16 | Hydrogen circulating pump of fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122796004.3U CN216241287U (en) | 2021-11-16 | 2021-11-16 | Hydrogen circulating pump of fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216241287U true CN216241287U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122796004.3U Active CN216241287U (en) | 2021-11-16 | 2021-11-16 | Hydrogen circulating pump of fuel cell |
Country Status (1)
| Country | Link |
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| CN (1) | CN216241287U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962266A (en) * | 2022-05-08 | 2022-08-30 | 烟台东德实业有限公司 | One-way bearing type ice-breaking hydrogen circulating pump |
-
2021
- 2021-11-16 CN CN202122796004.3U patent/CN216241287U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962266A (en) * | 2022-05-08 | 2022-08-30 | 烟台东德实业有限公司 | One-way bearing type ice-breaking hydrogen circulating pump |
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