CN216054821U - Compact hydrogen fuel cell reaction system - Google Patents
Compact hydrogen fuel cell reaction system Download PDFInfo
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- CN216054821U CN216054821U CN202122137660.2U CN202122137660U CN216054821U CN 216054821 U CN216054821 U CN 216054821U CN 202122137660 U CN202122137660 U CN 202122137660U CN 216054821 U CN216054821 U CN 216054821U
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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
Abstract
The present invention relates to a compact hydrogen fuel cell reaction system. The utility model provides a compact hydrogen fuel cell reaction system, its characterized in that includes the pile, the both ends of pile are provided with the end plate respectively, and directly fixed with magnetic suspension hydrogen circulating pump on at least one of them end plate, the pile has hydrogen entry, hydrogen export, air inlet and air outlet, hydrogen entry, hydrogen export, air inlet and air outlet all set up on the end plate that is fixed with magnetic suspension hydrogen circulating pump, the inlet end of magnetic suspension hydrogen circulating pump with hydrogen export intercommunication, the end of giving vent to anger of magnetic suspension hydrogen circulating pump with hydrogen entry intercommunication. The utility model can realize the miniaturization of the magnetic suspension hydrogen circulating pump, and can integrate the magnetic suspension hydrogen circulating pump on the hydrogen fuel cell, so that the structure of the utility model is more compact, and the utility model has the advantages of smaller occupied space and more reliable use.
Description
Technical Field
The present invention relates to a compact hydrogen fuel cell reaction system.
Background
The proton exchange membrane based hydrogen fuel cell pile technology is that hydrogen is supplied to the anode of the hydrogen fuel cell, oxygen is supplied to the cathode of the hydrogen fuel cell, and the hydrogen fuel cell generates electrochemical reaction through the catalytic conversion of the hydrogen fuel cell to generate electric energy and water. In principle, hydrogen fuel cells can generate electricity continuously as long as reactants are continuously fed and reaction products are continuously discharged. The hydrogen fuel cell necessarily comprises a hydrogen and oxygen supply system, wherein the hydrogen supply system usually adopts circulation supply, high-pressure hydrogen is input into the galvanic pile after being subjected to pressure reduction, the residual hydrogen after reaction is sent back to the anode through a hydrogen circulating pump, and meanwhile, water produced by the reaction in the galvanic pile and impurity gas reversely permeating into the anode can be taken out.
The new energy vehicle with the hydrogen fuel reaction system has the advantages that the hydrogen circulating pump occupies a large space, the energy density of the hydrogen fuel cell is reduced, the integration level between the hydrogen circulating pump and the galvanic pile is not high, the hydrogen fuel cell is connected through the air supply pipeline, the staggered air supply pipeline enables the hydrogen fuel cell to be more complex in structure and poor in reliability, and meanwhile, the air supply pipeline occupies a large space.
Disclosure of Invention
It is an object of the present invention to provide a compact hydrogen fuel cell reaction system having a smaller volume.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a compact hydrogen fuel cell reaction system, includes the pile, the both ends of pile are provided with the end plate respectively, and directly fixed with magnetic suspension hydrogen circulating pump on at least one of them end plate, the pile has hydrogen entry, hydrogen export, air inlet and air outlet, hydrogen entry, hydrogen export, air inlet and air outlet all set up on the end plate that is fixed with magnetic suspension hydrogen circulating pump, the inlet end of magnetic suspension hydrogen circulating pump with the hydrogen export intercommunication, the end of giving vent to anger of magnetic suspension hydrogen circulating pump with the hydrogen entry intercommunication.
The utility model can make the rotor shaft and the impeller of the motor rotate at super high speed by adopting the magnetic suspension hydrogen circulating pump, can make the galvanic pile realize higher energy density, and makes the integration of the hydrogen circulating part and the galvanic pile possible. The utility model integrates the galvanic pile and the magnetic suspension hydrogen circulating pump, thereby achieving the advantages of smaller volume, smaller occupied space, simpler and more compact structure, high use reliability and capability of improving the energy density of the hydrogen fuel cell.
Preferably, the end plate is provided with a first channel and a second channel, the magnetic suspension hydrogen circulating pump is communicated with the hydrogen inlet through the first channel, and the magnetic suspension hydrogen circulating pump is communicated with the hydrogen outlet through the second channel.
The magnetic suspension hydrogen circulating pump is integrated on the end plate, and other structural designs of the galvanic pile do not need to be changed. The first channel and the second channel are both arranged on the end plate, and the pipelines of the first channel and the second channel are independent, so that the structure of the hydrogen fuel cell is simpler. The first channel and the second channel may be disposed inside the end plate or on the surface of the end plate.
Preferably, the magnetic suspension hydrogen circulating pump comprises a pump shell and a rotating assembly positioned in the pump shell, the pump shell consists of a cooling machine shell and a volute, the cooling machine shell and the volute jointly form an inner cavity which is used for accommodating the rotating assembly and is sealed with the outside, the cooling machine shell and the volute are communicated in a gas phase, the rotating assembly comprises a rotor shaft and an impeller, and a suspension support is formed between the rotating assembly and the pump shell through a magnetic suspension bearing; when the rotary assembly works, the inner cavity is filled with working media, and the rotary assembly is suspended in the working media.
The inner cavity of the cooling machine shell is directly communicated with the inner cavity of the volute, dynamic sealing of the rotor shaft and the volute is not needed, and hydrogen sealing can be realized only by sealing the pump shell and the outside, so that hydrogen leakage is avoided. The utility model adopts the magnetic suspension bearing to support the rotation of the impeller, the magnetic suspension bearing has no rotation speed limitation of a mechanical bearing, the mechanical bearing is not required to support, the lubrication and sealing problems which need to be faced by the mechanical bearing are avoided, the hydrogen is not polluted by lubricating oil, and the high-speed rotation of the rotor shaft can be realized. Compared with a claw type hydrogen circulating pump, the hydrogen pressurizing device has the advantages that the hydrogen pressurizing effect can be guaranteed, the structure is simple, and the miniaturization of the magnetic suspension hydrogen circulating pump can be realized.
The magnetic suspension bearing can isolate the vibration transmission of the stator part and the rotor part of the motor to a great extent, and has the advantages of low noise, high reliability and longer service life; meanwhile, compared with other pneumatic bearings, the passive non-contact bearing with the active control can also realize more active control of the motor and feedback of the state of the rotating shaft. Wherein, hydrogen gets into in the cooling machine shell, can also cool rotating assembly.
Preferably, the volute is sleeved on the outer side of the end part of the cooling machine shell, an outer limiting part extending towards the circumferential outer side is arranged at the position of the cooling machine shell deviating from the end part, and the volute is positioned on the axial side of the outer limiting part; the outer surface of the rotating assembly is provided with a protective layer; and a stator is arranged in the cooling machine shell and is sealed by pouring sealant.
Various sealing methods can be adopted between the volute and the cooling machine shell, such as glue sealing, sealing ring sealing and the like. The end part of the volute is sleeved outside the end part of the cooling casing and fixed, so that the volute cannot move radially relative to the cooling casing, an effective avoiding space between the impeller and the inner wall of the volute can be ensured, and the impeller is prevented from floating upwards to be in contact with the volute after the motor is powered on and started. The outer limiting part is used for limiting the volute, so that a set position is ensured between an air inlet and an air outlet of the volute and the impeller, and the impeller can be prevented from being driven by the rotor shaft to float upwards to contact and collide with the inner wall of the volute after the motor part is electrified. Wherein, outer spacing portion not only is used for spacing, can also be used for fixed with the fastener of spiral case. The protective layer and the pouring sealant are used for preventing hydrogen and water vapor from corroding the rotating assembly and the stator. Wherein, a protective layer can be formed on the surface of the rotor shaft by means of titanium plating or DLC treatment.
Preferably, the magnetic suspension bearing comprises a radial-axial integrated magnetic suspension bearing and a radial magnetic suspension bearing, the radial magnetic suspension bearing is positioned at the shaft extension end of the rotor shaft, and the radial-axial integrated magnetic suspension bearing is positioned at the non-shaft extension end of the rotor shaft. The three degrees of freedom of the rotating assembly are kept through the radial-shaft integrated magnetic suspension bearing, and the two degrees of freedom of the rotating assembly are guaranteed through the radial magnetic suspension bearing.
Preferably, the radial magnetic suspension bearing comprises a first magnetizer and a second magnetizer which are arranged along the axial direction of the rotor shaft at intervals, a first floating ring is positioned between the first magnetizer and the second magnetizer, a first sensor is fixed on the first floating ring, the distance between the first floating ring and the rotor shaft is L1, the first magnetizer comprises an iron core and a coil, the distance between the iron core of the first magnetizer and the rotor shaft is L2, the distance between the first sensor and the rotor shaft is L3, and L1 is more than L2 and is not more than L3; the first floating ring and the cooling shell are integrally formed. Wherein, L1 is more than L2 is less than or equal to L3, which can avoid the rotor shaft contacting with the first magnetizer and the second magnetizer when the utility model is not used, so as to ensure the rotor shaft to suspend and rotate quickly and stably when the utility model is started. The first floating ring and the cooling shell are integrated, so that the structure of the magnetic bearing is simplified, and the positioning and cooling of the magnetic bearing are facilitated.
Preferably, the radial-axial integrated magnetic suspension bearing comprises a radial magnetic suspension bearing portion and an axial magnetic suspension bearing portion, the radial-axial integrated magnetic suspension bearing is provided with a third magnetizer, a fourth magnetizer and a fifth magnetizer which are axially arranged along the rotor shaft at intervals, wherein the third magnetizer and the fourth magnetizer form a magnetic pole of the radial magnetic suspension bearing portion, and the fourth magnetizer and the fifth magnetizer form a magnetic pole of the axial magnetic suspension bearing portion. The radial magnetic suspension bearing part and the axial magnetic suspension bearing part share the same magnetizer, so that the axial structure of the utility model is more compact, and the miniaturization of the utility model is convenient to realize.
Preferably, the radial magnetic suspension bearing portion and the axial magnetic suspension bearing portion are fixed in a first fixing piece with an annular cross section, and the first fixing piece is fixed with the cooling machine shell; a second floating ring is arranged between the third magnetizer and the fourth magnetizer, the third magnetizer comprises an iron core and a coil, the distance between the iron core of the third magnetizer and the rotor shaft is L5, the distance between the second floating ring and the rotor shaft is L4, a second sensor is arranged on the second floating ring, the distance between the second sensor and the rotor shaft is L6, and L4 is more than L5 and is not more than L6; the second floating ring and the first fixing piece are integrally formed.
The radial-axial integrated magnetic suspension bearing is made into an independent component assembly through the first fixing piece, so that the radial-axial integrated magnetic suspension bearing is convenient to store in the assembling and production processes, and is convenient to subsequently maintain and replace. And L6 is more than L4 and less than L5, so that the rotor shaft can be prevented from contacting with the third magnetizer and the fourth magnetizer when the motor is not used, and the rotor shaft can be quickly and stably suspended and rotated when the motor is started. The second floating ring and the first fixing piece are integrally formed, so that positioning and fixing are facilitated, assembly of parts of the radial-axial integrated magnetic suspension bearing is facilitated, and the first fixing piece can play a role in improving a cooling effect when made of a heat-conducting aluminum material and the like.
Preferably, a fifth floating ring and a sixth floating ring are arranged between the fourth magnetizer and the fifth magnetizer, and a thrust disc positioned between the fifth floating ring and the sixth floating ring is arranged on the rotor shaft; the fifth floating ring is fixed on the end face of the fourth magnetizer, and the sixth floating ring is fixed on the end face of the fifth magnetizer; and the distance L7 between the end surface of the thrust disc and the fifth floating ring or the sixth floating ring is smaller than the distance L8 between the impeller and the end surface of the cooling machine shell, which is closest to the impeller. The fifth floating ring and the sixth floating ring are used for avoiding the contact between a thrust disc of the rotor shaft and the magnetizer, and the rotor shaft can be ensured to be quickly and stably suspended and rotated when the motor is started. Wherein, L7 is less than L8, which can avoid the contact between the impeller and the cooling casing when the utility model is not used.
Preferably, the cooling machine shell is of a structure with openings at two axial ends and an annular cross section, a closed shell is arranged at one end, far away from the volute, of the cooling machine shell, and the closed shell is fixedly connected with the cooling machine shell in a sealing mode.
The utility model can realize the miniaturization of the magnetic suspension hydrogen circulating pump, and can integrate the magnetic suspension hydrogen circulating pump on the hydrogen fuel cell, so that the structure of the utility model is more compact, and the utility model has the advantages of smaller occupied space and more reliable use.
Drawings
FIG. 1 is a schematic diagram of a hydrogen fuel cell and a hydrogen circulation pump according to the present invention;
FIG. 2 is a schematic diagram of a hydrogen fuel cell according to the present invention;
fig. 3 is a schematic view of one construction of an end plate of the hydrogen fuel cell of the present invention;
FIG. 4 is a schematic diagram of one configuration of the hydrogen circulation pump and channel housing of the present invention;
FIG. 5 is a schematic structural view of the present invention;
FIG. 6 is a schematic structural diagram of a first radial magnetic suspension bearing according to the present invention;
FIG. 7 is an enlarged view taken at A in FIG. 6;
FIG. 8 is a schematic structural diagram of a radial-axial integrated magnetic suspension bearing of the present invention;
FIG. 9 is an enlarged view of FIG. 8 at B;
FIG. 10 is an enlarged view at C of FIG. 8;
fig. 11 is a schematic structural diagram of a radial magnetic suspension bearing portion of the radial-axial integrated magnetic suspension bearing of the present invention.
Detailed Description
The utility model is further described below with reference to the figures and specific embodiments.
As shown in fig. 1 to 4, the compact hydrogen fuel cell reaction system of the present invention includes a stack 100, two ends of the stack 100 are respectively provided with an end plate 1, one of the end plates 1 is directly fixed with a magnetic suspension hydrogen circulation pump 200, the end plate 1 is provided with a hydrogen inlet 11, a hydrogen outlet 12, an air inlet 13 and an air outlet 14, an air inlet 202 of the magnetic suspension hydrogen circulation pump 200 is communicated with the hydrogen outlet 12, and an air outlet 201 of the magnetic suspension hydrogen circulation pump 200 is communicated with the hydrogen inlet 11.
The end plate 1 is provided with a first channel 15 and a second channel 16, the magnetic suspension hydrogen circulating pump 200 is communicated with the hydrogen inlet 11 through the first channel 15, and the magnetic suspension hydrogen circulating pump 200 is communicated with the hydrogen outlet 12 through the second channel 16. The first channel 15 is disposed inside the end plate 1, an opening 17 for communicating with the gas outlet end 201 of the magnetic suspension hydrogen circulation pump 200 is formed at the surface of the end plate 1 at one end of the first channel 15, and the other end of the first channel 15 is communicated with the hydrogen inlet 11. The second channel 16 is formed between the channel shell 18 and the end plate 1, the cross section of the channel shell 18 is in a semi-enclosed shape, the channel shell 18 is fixed with the end plate 1, so that the second channel 16 is formed between the inner wall of the channel shell 18 and the surface of the end plate 1, one end of the channel shell 18 is connected with the hydrogen outlet 12, and the other end of the channel shell 18 is connected with the air inlet 202 of the magnetic suspension hydrogen circulating pump 200.
As shown in fig. 5, 6 and 8, the magnetic suspension hydrogen circulation pump 200 of the present invention includes a pump housing and a rotating assembly located inside the pump housing, the pump housing is composed of a cooling housing 3 and a volute 4, the cooling housing 3 and the volute 4 together form an inner cavity for accommodating the rotating assembly and being sealed with the outside, the cooling housing 3 and the volute 4 are in gas phase communication, when the hydrogen circulation pump of the present invention works, the inner cavity of the pump housing is filled with a working medium, and the rotating assembly is suspended in the working medium. The rotating assembly comprises a rotor shaft 5 and an impeller 51, and the rotor shaft 5 and the impeller 51 form a suspension support with the pump shell through a magnetic suspension bearing.
The magnetic suspension bearing comprises a radial-axial integrated magnetic suspension bearing 300 and a radial magnetic suspension bearing 400, wherein the radial magnetic suspension bearing 400 is positioned at the axial extension end of the rotor shaft 5, and the radial-axial integrated magnetic suspension bearing 300 is positioned at the non-axial extension end of the rotor shaft 5. Wherein, the outer surface of the rotating component is provided with a protective layer, or the rotor shaft is made of stainless steel; the stator 30 is arranged in the cooling machine shell 3, the stator 30 is fixed with the cooling machine shell 3 and is positioned between the radial-axial integrated magnetic suspension bearing 300 and the radial magnetic suspension bearing 400, and the pouring sealant is wrapped outside the stator 30.
The volute 4 is directly connected with the cooling casing 3 and sealed by a first sealing ring 41. The volute 4 is sleeved on the outer side of the end part of the cooling casing 3, an outer limiting part 31 extending towards the outer circumferential side is arranged at the position of the deviated end part of the cooling casing 3, the volute 4 is positioned at the axial side of the outer limiting part 31 and is fixed with the outer limiting part 31 through a fastening piece, and a first sealing ring 41 for sealing is arranged between the circumferential inner wall of the volute 4 and the circumferential outer wall of the end part of the cooling casing 3.
The cooling machine shell 3 is an annular structure with openings at two axial ends and a cross section, one end of the cooling machine shell 3, which is far away from the volute 4, is provided with a closed shell 6, the end part of the closed shell 6 and the end part of the cooling machine shell 3 are mutually sleeved and fixed together through a fastener, and the joint of the end part of the closed shell 6 and the end part of the cooling machine shell 3 is sealed through sealant.
As shown in fig. 5 to 7, the radial magnetic suspension bearing 400 includes a first magnetizer 401 and a second magnetizer 402 axially spaced along the rotor shaft, a first floating ring 404 is disposed between the first magnetizer 401 and the second magnetizer 402, the first floating ring 404 is integrally formed with the cooling casing 3, a plurality of axially penetrating fixing grooves are disposed at a position of the first floating ring 404 adjacent to the cooling casing 3, a first permanent magnet 403 is fixed in each fixing groove, the plurality of first permanent magnets 403 are annularly and uniformly spaced and surround the rotor shaft 5, and a first sensor 405 is fixed on the first floating ring 404. The distance between the first floating ring 404 and the rotor shaft 5 is L1, the first magnetizer 401 includes an iron core and a coil, the distance between the iron core of the first magnetizer 401 and the rotor shaft 5 is L2, the distance between the first sensor 405 and the rotor shaft 5 is L3, and L1 is greater than L2 and is equal to or less than L3.
As shown in fig. 5 to 11, the radial-axial integrated magnetic levitation bearing 300 includes a radial magnetic levitation bearing portion 310 and an axial magnetic levitation bearing portion 320, the radial magnetic levitation bearing portion 310 and the axial magnetic levitation bearing portion 320 are fixed in a first fixing member 330 having an annular cross section, and the first fixing member 330 is fixed to the cooling casing 3.
The radial-axial integrated magnetic suspension bearing 300 includes a third magnetic conductor 311, a fourth magnetic conductor 312, and a fifth magnetic conductor 321 arranged at intervals along the axial direction of the rotor shaft, wherein the third magnetic conductor 311 and the fourth magnetic conductor 312 constitute magnetic poles of the radial magnetic suspension bearing portion 310, the fourth magnetic conductor 312 and the fifth magnetic conductor 321 constitute magnetic poles of the axial magnetic suspension bearing portion 320, and the radial magnetic suspension bearing portion 310 and the axial magnetic suspension bearing portion 320 of the present embodiment share the same fourth magnetic conductor 312. As is well known, the radial magnetically levitated bearing portion 310 and the axial magnetically levitated bearing portion 320 further include permanent magnets and other components constituting a magnetic levitation bearing. A second floating ring 314 is disposed between the third magnetic conductor 311 and the fourth magnetic conductor 312, and the second floating ring 314 and the first fixing member 330 are integrally formed.
As shown in fig. 7 to 11, the radial magnetic suspension bearing portion 310 of the present embodiment has the same structure as the radial magnetic suspension bearing 400, a second permanent magnet 313 is disposed between a third magnetizer 311 and a fourth magnetizer 312 of the radial magnetic suspension bearing portion 310, the shape and structure of a second floating ring 314 are the same as those of a first floating ring 404, the second permanent magnet 313 is fixed in a fixing groove of the second floating ring 314, and both the first magnetizer 401 and the third magnetizer 311 include an iron core and a coil 319.
The distance between the iron core of the third magnetizer 311 and the rotor shaft 5 is L5, the distance between the second floating ring 314 and the rotor shaft 5 is L4, the second sensor 315 is arranged on the second floating ring 314, the distance between the second sensor 315 and the rotor shaft 3 is L6, and L4 is greater than L5 and is not greater than L6.
A fifth floating ring 322 and a sixth floating ring 323 are arranged between the fourth magnetizer 312 and the fifth magnetizer 321, a thrust plate 50 positioned between the fifth floating ring 322 and the sixth floating ring 323 is arranged on the rotor shaft 5, the fifth floating ring 322 is fixed at the end surface of the fourth magnetizer 312, and the sixth floating ring 323 is fixed at the end surface of the fifth magnetizer 321. As shown in fig. 7 and 8, the distance between the end surface of the thrust disk 50 and the fifth floating ring 322 or the sixth floating ring 323 is L7, the distance between the impeller 51 and the end surface of the cooling casing 3 closest to the impeller 51 is L8, and L7 < L8.
As shown in fig. 5 and 8, the inner wall of the cooling housing 3 is provided with a first step structure 32 and a second step structure 33 for positioning a first fixing member 330, one end face of the first fixing member 330 is adjacent to the step face formed by the first step structure 32, and the other end of the first fixing member 330 is provided with an extension portion 331 extending to the outside in the circumferential direction and fixed to the second step structure 33. The second fixed part 340 is fixed on one side of the first fixed part 330 far away from the impeller 51, the second fixed part 340 is fixed with the first fixed part 330 through a fastener, the axial magnetic suspension bearing part 320 is limited on the axial side of the second fixed part 340, and an axial displacement sensor 350 is arranged at the inner edge of the fifth magnetizer 321 of the axial magnetic suspension bearing part 320.
As shown in fig. 5, the inner diameter of the inner wall of the cooling housing 3 gradually decreases from the volute 4 side to the closed shell 6 side and is in a multi-section structure, the inner diameter of the inner wall of each section of the cooling housing is different, the radial magnetic suspension bearing 400 is located at the section with the smaller inner diameter of the cooling housing, and the radial-axial integrated magnetic suspension bearing 300 is located at the section with the larger inner diameter of the cooling housing.
The utility model can realize the miniaturization of the magnetic suspension hydrogen circulating pump, and can integrate the magnetic suspension hydrogen circulating pump on the hydrogen fuel cell, so that the structure of the utility model is more compact, and the utility model has the advantages of smaller occupied space and more reliable use.
Claims (10)
1. The utility model provides a compact hydrogen fuel cell reaction system, its characterized in that includes the pile, the both ends of pile are provided with the end plate respectively, and directly fixed with magnetic suspension hydrogen circulating pump on at least one of them end plate, the pile has hydrogen entry, hydrogen export, air inlet and air outlet, hydrogen entry, hydrogen export, air inlet and air outlet all set up on the end plate that is fixed with magnetic suspension hydrogen circulating pump, the inlet end of magnetic suspension hydrogen circulating pump with hydrogen export intercommunication, the end of giving vent to anger of magnetic suspension hydrogen circulating pump with hydrogen entry intercommunication.
2. The compact hydrogen fuel cell reaction system according to claim 1, wherein the end plate is provided with a first passage through which the magnetically levitated hydrogen circulation pump communicates with the hydrogen inlet and a second passage through which the magnetically levitated hydrogen circulation pump communicates with the hydrogen outlet.
3. The compact hydrogen fuel cell reaction system according to claim 1, wherein the magnetic suspension hydrogen circulation pump comprises a pump housing and a rotating assembly located inside the pump housing, the pump housing is composed of a cooling housing and a volute, the cooling housing and the volute together form an inner cavity for accommodating the rotating assembly and being sealed from the outside, the cooling housing and the volute are in gas phase communication, the rotating assembly comprises a rotor shaft and an impeller, and the rotating assembly forms a suspension support with the pump housing through a magnetic suspension bearing; when the rotary assembly works, the inner cavity is filled with working media, and the rotary assembly is suspended in the working media.
4. The compact hydrogen fuel cell reaction system according to claim 3, wherein the volute is fitted around an end portion of the cooling housing, an outer limit portion extending to a circumferential outer side is provided at a position deviating from the end portion of the cooling housing, and the volute is located on an axial side of the outer limit portion;
the outer surface of the rotating assembly is provided with a protective layer; and a stator is arranged in the cooling machine shell and is sealed by pouring sealant.
5. The compact hydrogen fuel cell reaction system according to claim 3, wherein the magnetic suspension bearings comprise a radial-axial integrated magnetic suspension bearing and a radial magnetic suspension bearing, the radial magnetic suspension bearing is located at the axial extending end of the rotor shaft, and the radial-axial integrated magnetic suspension bearing is located at the non-axial extending end of the rotor shaft.
6. The compact hydrogen fuel cell reaction system according to claim 5, wherein the radial magnetic suspension bearing comprises a first magnetic conductor and a second magnetic conductor which are arranged at intervals along the axial direction of the rotor shaft, a first floating ring is arranged between the first magnetic conductor and the second magnetic conductor, the first floating ring is fixed with a first sensor, the distance between the first floating ring and the rotor shaft is L1, the first magnetic conductor comprises an iron core and a coil, the distance between the iron core of the first magnetic conductor and the rotor shaft is L2, the distance between the first sensor and the rotor shaft is L3, and L1 < L2 ≦ L3;
the first floating ring and the cooling shell are integrally formed.
7. The compact hydrogen fuel cell reaction system according to claim 5, wherein the radial-axial integrated magnetic suspension bearing includes a radial magnetic suspension bearing portion and an axial magnetic suspension bearing portion, and the radial-axial integrated magnetic suspension bearing is provided with a third magnetic conductor, a fourth magnetic conductor and a fifth magnetic conductor which are arranged at intervals in the axial direction of the rotor shaft, wherein the third magnetic conductor and the fourth magnetic conductor constitute magnetic poles of the radial magnetic suspension bearing portion, and the fourth magnetic conductor and the fifth magnetic conductor constitute magnetic poles of the axial magnetic suspension bearing portion.
8. The compact hydrogen fuel cell reaction system according to claim 7, wherein the radial magnetically levitated bearing portion and the axial magnetically levitated bearing portion are each fixed in a first fixing member having an annular cross section, the first fixing member being fixed with the cooling case;
a second floating ring is arranged between the third magnetizer and the fourth magnetizer, the third magnetizer comprises an iron core and a coil, the distance between the iron core of the third magnetizer and the rotor shaft is L5, the distance between the second floating ring and the rotor shaft is L4, a second sensor is arranged on the second floating ring, the distance between the second sensor and the rotor shaft is L6, and L4 is more than L5 and is not more than L6;
the second floating ring and the first fixing piece are integrally formed.
9. The compact hydrogen fuel cell reaction system according to claim 7, wherein a fifth floating ring and a sixth floating ring are provided between the fourth magnetizer and the fifth magnetizer, and a thrust plate is provided on the rotor shaft between the fifth floating ring and the sixth floating ring;
the fifth floating ring is fixed on the end face of the fourth magnetizer, and the sixth floating ring is fixed on the end face of the fifth magnetizer;
and the distance L7 between the end surface of the thrust disc and the fifth floating ring or the sixth floating ring is smaller than the distance L8 between the impeller and the end surface of the cooling machine shell, which is closest to the impeller.
10. The compact hydrogen fuel cell reaction system according to claim 3, wherein the cooling housing is a structure with two open ends in the axial direction and an annular cross section, and a closed housing is provided at one end of the cooling housing away from the volute, and the closed housing and the cooling housing are fixedly connected in a sealing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122137660.2U CN216054821U (en) | 2021-09-06 | 2021-09-06 | Compact hydrogen fuel cell reaction system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122137660.2U CN216054821U (en) | 2021-09-06 | 2021-09-06 | Compact hydrogen fuel cell reaction system |
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| CN216054821U true CN216054821U (en) | 2022-03-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115411312A (en) * | 2022-10-31 | 2022-11-29 | 北京英博新能源有限公司 | Fuel cell hydrogen recirculation system, control method and fuel cell system |
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2021
- 2021-09-06 CN CN202122137660.2U patent/CN216054821U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115411312A (en) * | 2022-10-31 | 2022-11-29 | 北京英博新能源有限公司 | Fuel cell hydrogen recirculation system, control method and fuel cell system |
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