CN116135585B - Combined fuel cell system for rail transit - Google Patents
Combined fuel cell system for rail transit Download PDFInfo
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- CN116135585B CN116135585B CN202310404076.XA CN202310404076A CN116135585B CN 116135585 B CN116135585 B CN 116135585B CN 202310404076 A CN202310404076 A CN 202310404076A CN 116135585 B CN116135585 B CN 116135585B
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- guide rail
- fuel cell
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
- B60L50/71—Arrangement of fuel cells within vehicles specially adapted for electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C3/00—Electric locomotives or railcars
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/2475—Enclosures, casings or containers of fuel cell stacks
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to a combined fuel cell system for rail traffic, comprising: the combined type fuel cell system comprises an assembly frame, wherein the assembly frame comprises a first layer of frames for arranging fuel cell modules and a second layer of frames for arranging heat dissipation system modules, the first layer of frames comprise an underframe and a surrounding frame, the second layer of frames are positioned above the first layer of frames, the fuel cell modules comprise at least two sets of fuel cell assemblies, each set of fuel cell assembly is integrally arranged on one fuel cell assembly frame, each fuel cell assembly frame is connected with the underframe of the first layer of frames through a guide rail mechanism, and the combined type fuel cell system is high in integration degree and convenient to overhaul, not only is space saved, but also high-power requirements of vehicles can be met.
Description
Technical Field
The invention relates to the field of fuel cells, in particular to a combined fuel cell system for rail transit.
Background
The hydrogen fuel cell technology is a main flow direction of clean energy development and utilization, power generation is realized through direct electrochemical reaction of hydrogen and oxygen, the reverse process of electrolysis of water is realized, the energy density is high, the noise is low, no pollution is caused, the highest temperature of the power generation reaction is not more than 100 ℃, no oxynitride is generated, only water is discharged, and the technology of a fuel cell system in the prior art mainly comprises two types: 1. the parts of the fuel cell system are distributed and arranged on the whole vehicle in a scattered manner; 2. integral, with fuel cell system spare part installed as a whole, distributed shortcoming lies in: the installation is complicated, and production efficiency is low, and integral defect lies in: the system is relatively closed, and internal parts are inconvenient to maintain and poor in heat dissipation, so that the fuel cell system is complex to install and difficult to maintain.
Please refer to chinese patent No. 202111652658.7, which discloses a fuel cell system for dual-system rail transit, comprising: the system comprises a system protective cover, a fuel cell assembly, a bearing underframe and two system bearing frames, wherein the two system bearing frames are arranged on the bearing underframe in parallel, and the two adjacent system bearing frames are connected through a frame connecting beam. The fuel cell system for rail transit has the following defects: 1. the fuel cell assembly is arranged on the bearing underframe and the system bearing frame, so that the installation of workers is convenient, but the maintenance is troublesome, and the fuel cell assembly is required to be detached from the bearing underframe and the system bearing frame during the maintenance because the space is narrow; 2. the fuel cell system is less integrated.
Accordingly, there is a need for a modular fuel cell system for rail transit that solves the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a combined fuel cell system for rail transit which has a high degree of integration and is easy to inspect.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a modular fuel cell system for rail transit comprising: the assembly frame comprises a first layer of frame used for arranging the fuel cell modules and a second layer of frame used for arranging the heat dissipation system modules, wherein the first layer of frame comprises a bottom frame and a surrounding frame, the second layer of frame is positioned above the first layer of frame, the fuel cell modules comprise at least two sets of fuel cell assemblies, each set of fuel cell assembly is integrally arranged on one fuel cell assembly frame, and each fuel cell assembly frame is connected with the bottom frame of the first layer of frame through a guide rail mechanism.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the guide rail mechanism includes: two sets of guide rail assemblies that are parallel arrangement, every guide rail assembly of group includes: the first guide rail piece, second guide rail piece, third guide rail piece, first ball holder, second ball holder, first ball holder locating part and second ball holder locating part, the second guide rail piece sets up between first guide rail piece and third guide rail piece, first guide rail piece and the chassis fixed connection of first layer frame, third guide rail piece and fuel cell module frame fixed connection, first ball holder is arranged between first guide rail piece and second guide rail piece, be equipped with a plurality of first ball on the first ball holder, first guide rail piece is equipped with the first guide rail groove with a plurality of first ball matched with, second guide rail piece is equipped with the second guide rail groove with a plurality of first ball matched with, second ball holder is arranged between second guide rail piece and the third guide rail piece, be equipped with a plurality of second ball on the second ball holder, second guide rail piece is equipped with the third guide rail groove with a plurality of second ball matched with, third guide rail piece is equipped with the second end of a plurality of second ball and the first end of second guide rail piece, the second end of second ball holder is equipped with the limit structure of the second end of second ball holder.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the first end limiting structure comprises a first limiting groove arranged at the end part of the second guide rail piece and a first limiting block arranged at the end part of the first guide rail piece, and the second end limiting structure comprises a second limiting groove arranged at the end part of the second guide rail piece and a second limiting block arranged at the end part of the third guide rail piece.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the first ball retainer and the second ball retainer are identical in structure, the cross sections of the first ball retainer and the second ball retainer are U-shaped, the first ball retainer and the second ball retainer comprise a base, a first bending part and a second bending part, the first bending part is bent and extended from one end of the base, the second bending part is bent and extended from the other end of the base, and a plurality of ball accommodating grooves which are uniformly distributed are formed in the first bending part and the second bending part.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the number of the first ball retainer limiting pieces is two, one of the first ball retainer limiting pieces is arranged at the outer end of the first guide rail piece, the other first ball retainer limiting piece is arranged at the inner end of the second guide rail piece, the number of the second ball retainer limiting pieces is two, one of the second ball retainer limiting pieces is arranged at the outer end of the second guide rail piece, and the other second ball retainer limiting piece is arranged at the inner end of the third guide rail piece.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the cross section of second guide rail spare personally submits "worker" type setting, the second guide rail spare includes wide portion, lower wide portion and is used for connecting the vertical connecting portion in centre of wide portion and lower wide portion, the quantity of second guide rail groove is two, and two second guide rail grooves set up respectively in the upper wide portion lower wall department and the lower wide portion upper wall department of vertical connecting portion one side in the centre, the quantity of third guide rail groove is two, and two third guide rail grooves set up respectively in the upper wide portion lower wall department and the lower wide portion upper wall department of the vertical connecting portion opposite side in the centre, the quantity of first guide rail groove is two, and two first guide rail grooves set up respectively on the upper and lower both sides wall of first guide rail spare, the quantity of fourth guide rail groove is two, and two fourth guide rail grooves set up respectively on the upper and lower both sides wall of third guide rail spare.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: an assembly frame mounting seat, a first guide rail mounting seat, an assembly frame lifting seat, a tail pipe arrangement mounting seat and a protective cover mounting seat are arranged on the underframe of the first layer of frame.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: and a waist hole is formed in the assembly frame mounting seat.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the aluminum honeycomb panel is characterized in that a plurality of windows are formed around and at the top of the surrounding frame, each window is covered by a protective cover, the protective cover is formed by bonding an aluminum honeycomb panel and aluminum side plates arranged around the aluminum honeycomb panel through glue solution, and the aluminum side plates are connected with the surrounding frame through bolts.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the protective covers positioned on the front side and the rear side of the enclosure are provided with ventilation grids.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: and a cooling pipeline interface hole and an electric interface hole are arranged on the protective cover positioned at the top of the enclosure frame.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the fuel cell assembly frame and the assembly frame are formed by assembling and welding low alloy steel pipes and plate bending pieces.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the fuel cell assembly frame comprises a second guide rail mounting seat, a cooling liquid discharge port, a galvanic pile mounting seat, a shock pad and a DC/DC mounting bracket.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the heat dissipation system module includes: the radiator comprises a main radiator, an auxiliary radiator, an expansion water tank and a radiator controller, wherein the auxiliary radiator and the expansion water tank are arranged at the top of the second-layer frame, and the main radiator is splayed and arranged at two sides of the top of the second-layer frame.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the rail transit combined fuel cell system further includes an air intake filter system disposed on top of the first tier frame of the assembly frame.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: the fuel cell module comprises four sets of fuel cell assemblies which are arranged in a 2 x 2 array.
Preferably, a combined fuel cell system for rail transit in the present invention is further provided with: a gap is arranged between every two adjacent sets of fuel cell components, and a tail gas discharge pipeline, a hydrogen supply pipeline and a high-voltage output wire bundle are arranged in the gap.
Compared with the prior art, the invention has the following beneficial effects: according to the combined fuel cell system for rail transit, the fuel cell modules and the heat dissipation system modules are designed in an integrated mode, so that the maintenance and the use of the whole fuel cell system are facilitated, the platformity of the whole fuel cell system is improved, and the design interface with a whole vehicle is greatly reduced; in addition, the invention is characterized in that a single fuel cell component is integrally arranged on a fuel cell component frame, each fuel cell component frame is connected with the underframe of the assembly frame through the guide rail mechanism, so that an organic whole can be formed, the modal performance of the whole system is ensured, quick overhaul and partition overhaul can be realized, namely, which fuel cell component has a problem only by sliding the fuel cell component out of the side surface of the assembly frame, the technical problem that the whole fuel cell component is required to be detached from the assembly frame for overhaul in the prior art is avoided, therefore, the overhaul efficiency is greatly improved after the invention is improved, in addition, because a plurality of sets of fuel cell components are integrated together, the space is relatively compact during overhaul, if the traditional two-section guide rail is adopted, the sliding distance travel of the single fuel cell component out of the side surface is shorter, and the operation of an maintainer is not facilitated, and therefore, in order to increase the sliding distance travel of the single fuel cell component out of the side surface, the three-guide rail type guide rail mechanism is specially designed; the combined fuel cell system has high integration degree, not only realizes space saving, but also can meet the high-power requirement of vehicles.
Drawings
Fig. 1 is a schematic structural view of a combined fuel cell system for rail transit in the present invention.
Fig. 2 is a schematic structural view of a first layer frame in the present invention, wherein the case of the installed protective cover is disclosed.
Fig. 3 is a schematic view of the structure of the first layer frame in the present invention, wherein the fuel cell assembly is disclosed with the protective cover removed.
Fig. 4 is a schematic view of the structure of the first frame in the present invention, wherein the fuel cell assembly is shown after the protective cover is removed.
Fig. 5 is a schematic view showing a state in which one of the fuel cell assemblies is pulled out from the first-layer frame in the present invention.
Fig. 6 is a schematic structural view of a chassis according to the present invention.
Fig. 7 is a schematic view of the structure of a fuel cell assembly frame according to the present invention.
Fig. 8 is a schematic view showing a structure in which a single fuel cell assembly is mounted on a fuel cell assembly frame in the present invention.
Fig. 9 is a schematic perspective view of the guide rail assembly according to the present invention, wherein the guide rail is disclosed as being retracted.
Fig. 10 is a schematic perspective view of the guide rail assembly according to the present invention, wherein the guide rail is shown extended.
Fig. 11 is an exploded view of the guide rail assembly of the present invention.
FIG. 12 is a schematic cross-sectional view of a rail assembly of the present invention.
In fig. 1 to 12: 1. assembly frame, 10, first layer frame, 100, chassis, 1000, assembly frame mount, 1001, first rail mount, 1002, assembly frame lift mount, 1003, tail pipe line mount, 1004, kidney hole, 101, enclosure, 102, window, 11, second layer frame, 12, hood, 120, aluminum honeycomb panel, 121, aluminum profile frame, 122, ventilation grid, 123, cooling line interface hole, 124, electrical interface hole, 13, bolt, 2, fuel cell assembly, 20, void, 21, galvanic pile, 22, air subsystem, 23, thermal management subsystem, 24, hydrogen subsystem, 25, air inlet, 26, hydrogen inlet, 3, fuel cell assembly frame, 30, second rail mount, 31, coolant drain, 32, galvanic pile mount, 33, shock pad, 34, DC/DC mounting bracket, 4, rail mechanism, 40, rail assembly, 400, first rail member, 4000, first rail groove, 4001, first stopper, 401, second rail member, 4010, second rail groove, 4011, third rail groove, 4012, first stopper groove, 4013, second stopper groove, 4014, upper wide portion, 4015, lower wide portion, 4016, intermediate vertical connecting portion, 402, third rail member, 4020, fourth rail groove, 4021, second stopper, 403, first ball retainer, 4030, base, 4031, first bent portion, 4032, second bent portion, 4033, ball receiving groove, 404, second ball retainer, 405, first ball retainer stopper, 406, second ball retainer stopper, 407, first ball, 408, second ball, 5, heat dissipation system module, 50, main heat sink, 51, auxiliary heat sink, 52, expansion tank, 53, heat sink controller, 6, heat sink controller, an air intake filtration system.
Detailed Description
A combined fuel cell system for rail transit according to the present invention will be described in further detail by way of specific examples.
Referring to fig. 1 to 12, a combined fuel cell system for rail transit includes: the assembly frame 1, the assembly frame 1 includes a first layer frame 10 for arranging fuel cell modules and a second layer frame 11 for arranging heat dissipation system modules, the first layer frame 10 includes a bottom frame 100 and a surrounding frame 101, the second layer frame 11 is located above the first layer frame 10, the fuel cell modules include at least two sets of fuel cell assemblies 2, each set of fuel cell assemblies 2 is integrally installed on one fuel cell assembly frame 3, and each fuel cell assembly frame 3 is connected with the bottom frame 100 of the first layer frame 10 through a guide rail mechanism 4. The heat dissipation system module 5 includes: the main radiator 50, the auxiliary radiator 51, the expansion tank 52 and the radiator controller 53, the auxiliary radiator 51 and the expansion tank 52 are arranged at the top of the second layer frame 11, the main radiator 50 is arranged at two sides of the top of the second layer frame 11 in a splayed shape, and the arrangement has the following advantages: the stress of each part can be uniform, and more radiators can be arranged in the limited space at the top of the second-layer frame 11, so that the heat dissipation performance of the whole system is improved. The expansion tank 52 is used to absorb excess coolant of the radiator cooling circuit due to thermal expansion, preventing leakage and permanent loss of coolant. The radiator controller 53 is configured to control a plurality of radiators simultaneously, and calculate a required heat exchange amount according to the current temperature and the target temperature, so as to control the rotation speeds of the main radiator 50 and the auxiliary radiator 51. The fuel cell assembly frame 3 and the assembly frame 1 are formed by assembling and welding low alloy steel pipes and plate bending pieces, so that the high strength and rigidity are achieved, in the embodiment, the main radiator 50 and the auxiliary radiator 51 are fan-type radiators, the fuel cell module comprises four sets of fuel cell assemblies 2, the four sets of fuel cell assemblies 2 are arranged in a 2×2 array, two sets of fuel cell assemblies are arranged at the front end side by side, the other two sets of fuel cell assemblies are arranged at the rear end side by side, a gap 20 is arranged between every two adjacent sets of fuel cell assemblies 2, and an exhaust gas discharge pipeline, a hydrogen supply pipeline and a high-voltage output line bundle are arranged in the gap 20, so that the space is saved, and the sharing of a tail gas discharge pipeline is realized.
The underframe 100 is provided with an assembly frame mount 1000, a first rail mount 1001, an assembly frame hoist mount 1002, a tail pipe line mount 1003, and a hood mount (not shown). In this embodiment, the number of the assembly frame mounting seats 1000 is eight, and each assembly frame mounting seat 1000 is provided with a kidney hole 1004, and the function of the kidney hole 1004 is to adjust the mounting position of the whole combined fuel cell system when the whole combined fuel cell system is mounted on the vehicle body, thereby reducing the requirement on the manufacturing precision. The surrounding frame 101 is formed with a plurality of windows 102 at the periphery and the top, each window 102 is covered by a protective cover 12, the protective cover 12 is formed by bonding an aluminum honeycomb plate 120 and aluminum side plates 121 arranged at the periphery of the aluminum honeycomb plate 120 through glue solution, the protective cover has the advantages of light weight, high strength and good heat insulation effect, the protective cover 12 is used for protecting the fuel cell module from direct sun, rain and snow scouring and sundries entering, and the aluminum side plates 121 of the protective cover 12 are fixed on a protective cover mounting seat of the underframe 100 and the surrounding frame 101 through a plurality of bolts 13. Can dismantle the protection casing 12 of enclosing frame 101 left and right sides according to the maintenance demand during the maintenance to all be equipped with the lifting eye on four angles of every protection casing 12 to can be convenient for the whole of protection casing lift by crane and install, be equipped with ventilation grid 122 on the protection casing 12 that is located the both sides around enclosing frame 101, ventilation grid 122's effect is the normal ventilation of guarantee fuel cell module, is equipped with cooling line interface hole 123 and electrical interface hole 124 on the protection casing 12 that is located the enclosing frame 101 top. The rail transit combined fuel cell system further includes an air intake filtering system 6, and the air intake filtering system 6 is disposed on top of the first layer frame 10 of the assembly frame 1, thereby making reasonable use of space.
The fuel cell assembly frame 3 includes a second rail mount 30, a coolant discharge port 31, a stack mount 32, a shock pad 33, and a DC/DC mount bracket 34. The single fuel cell assembly 2 includes a stack 21 and electrical equipment (not shown) including an air compressor controller, a high voltage distribution box, and a voltage distribution box, an air subsystem 22, a thermal management subsystem 23, and a hydrogen subsystem 24. Each fuel cell assembly 2 is provided with an independent air inlet 25, a hydrogen inlet 26 and a tail gas discharge outlet (not shown), so that the requirements of each fuel cell assembly on air and hydrogen flow under different powers are met, mutual interference among each fuel cell assembly 2 is prevented, and stable output of power of each fuel cell assembly is facilitated.
The rail mechanism 4 includes: two sets of guide rail assemblies 40 are arranged in parallel, each set of guide rail assemblies comprising: the first guide rail 400, the second guide rail 401, the third guide rail 402, the first ball retainer 403, the second ball retainer 404, the first ball retainer limiting member 405 and the second ball retainer limiting member 406 are arranged in parallel, the first guide rail 400, the second guide rail 401 and the third guide rail 402 are arranged between the first guide rail 400 and the third guide rail 402, the first guide rail 400 is fixedly connected with the underframe 100 of the first layer frame 10, the third guide rail 402 is fixedly connected with the fuel cell assembly frame 3, in this embodiment, the first guide rail 400 is connected with the first guide rail mounting seat of the underframe 100 of the first layer frame 10 through a connecting frame, the third guide rail 402 is connected with the second guide rail mounting seat 30 of the fuel cell assembly frame 3 through a plurality of bolts, the first ball retainer 403 is arranged between the first guide rail 400 and the second guide rail 401, the number of the first ball retainer limiters 405 is two, one first ball retainer limiter 405 is arranged at the outer end of the first guide rail 400, the other first ball retainer limiter 405 is arranged at the inner end of the second guide rail 401, the first ball retainer 403 is provided with a plurality of first balls 407 which are uniformly distributed, the first guide rail 400 is provided with a first guide rail groove 4000 matched with the plurality of first balls 407, the second guide rail 401 is provided with a second guide rail groove 4010 matched with the plurality of first balls 407, the second ball retainer 404 is arranged between the second guide rail 401 and the third guide rail 402, the number of the second ball retainer limiters 406 is two, one second ball retainer limiter 406 is arranged at the outer end of the second guide rail 401, another second ball retainer stop 406 is disposed on the inner end of the third rail member 402. The second ball retainer 404 is provided with a plurality of second balls 408 which are uniformly arranged, the second rail member 401 is provided with a third rail groove 4011 which is matched with the plurality of second balls 408, and the third rail member 402 is provided with a fourth rail groove 4020 which is matched with the plurality of second balls 408. One free end of the second rail member 401 is provided with a first end limiting structure matched with the first rail member 400, the other free end of the second rail member 401 is provided with a second end limiting structure matched with the third rail member 402, in this embodiment, the first end limiting structure comprises a first limiting groove 4012 arranged at the end of the second rail member 401 and a first limiting block 4001 arranged at the end of the first rail member 400, and the second end limiting structure comprises a second limiting groove 4013 arranged at the end of the second rail member 401 and a second limiting block 4021 arranged at the end of the third rail member 402. The cross section of the first ball retainer 403 is in a U-shaped configuration, the first ball retainer 403 includes a base portion 4030, a first bending portion 4031 bent and extended from one end of the base portion 4030, and a second bending portion 4032 bent and extended from the other end of the base portion 4030, a plurality of ball receiving grooves 4033 uniformly arranged are formed in the first bending portion 4031 and the second bending portion 4032, the first balls 407 are mounted in the ball receiving grooves 4033, and the structure of the second ball retainer 404 is the same as that of the first ball retainer 403, so that repeated description is omitted, and in this embodiment, the first ball retainer 403 and the second ball retainer 404 are symmetrically arranged. The guide rail mechanism 4 can realize rolling friction between guide rails by arranging the balls and the ball retainers between the guide rails, and reduces friction force compared with sliding friction in the prior art. In this embodiment, the cross section of the second rail member 401 is in an "i" shape, the second rail member 401 includes an upper wide portion 4014, a lower wide portion 4015, and an intermediate vertical connecting portion 4016 for connecting the upper wide portion 4014 and the lower wide portion 4015, the number of the second rail grooves 4010 is two, the two second rail grooves 4010 are respectively disposed at the lower wall of the upper wide portion 4014 and the upper wall of the lower wide portion 4015 on one side of the intermediate vertical connecting portion 4016, the number of the third rail grooves 4011 is two, the two third rail grooves 4011 are respectively disposed at the lower wall of the upper wide portion 4014 and the upper wall of the lower wide portion 4015 on the other side of the intermediate vertical connecting portion 4016, the number of the first rail grooves 4000 is two, the two first rail grooves 4020 are respectively disposed on the upper and lower side walls of the first rail member 400, and the two fourth rail grooves 4020 are respectively disposed at the lower wall of the upper wide portion 4014 and the lower wide portion 4015 on one side of the third rail member 402.
The working principle of the guide rail mechanism 4 is as follows: when the single fuel cell assembly 2 needs to be pulled out from one side for maintenance, since the first rail member 400 is fixedly connected with the underframe 100 of the first layer frame 10, the first rail member 400 is fixed, the second rail member 401 moves outwards relative to the first rail member 400, the first ball retainer 403 and the first ball 407 are driven to move outwards together during the outwards movement of the second rail member 401, the first ball retainer limiting member 405 is used for limiting the first ball retainer 403 when the second rail member 401 moves outwards, the outwards movement stroke of the second rail member 401 relative to the first rail member 400 completes the outwards movement first section stroke of the whole rail mechanism 4, then the third rail member 402 moves outwards relative to the second rail member 401, the second ball retainer 404 and the second ball 408 are driven to move outwards during the outwards movement of the third rail member 402, the second ball retainer limiting member 406 is used for limiting the second ball retainer 404 when the third rail member 402 moves outwards, the outwards moving stroke of the third rail member 402 relative to the second rail member 401 completes the outwards moving second section of stroke of the whole rail mechanism 4, therefore, the rail mechanism 4 with the structure can increase the distance stroke of the single fuel cell assembly 2 sliding out from the side, provide enough maintenance space for maintenance personnel to maintain, after maintenance is finished, the third rail member 402 moves inwards relative to the second rail member 401 until the second limiting block 4021 at the end part of the third rail member 402 contacts the second limiting groove 4013 at the end part of the second rail member 401, then the second rail member 401 moves inwards relative to the first rail member 400 until the first limiting block 4012 at the end part of the second rail member 401 contacts the first limiting block 4011 at the end part of the first rail member 400, thereby completing the reset after the maintenance of the individual fuel cell assemblies 2.
In summary, in the combined fuel cell system for rail transit, the fuel cell module and the heat dissipation system module 5 are designed in an integrated arrangement, so that the maintenance and the use of the whole fuel cell system are facilitated, the platformity of the whole fuel cell system is improved, and the design interface with the whole vehicle is greatly reduced; in addition, the invention integrates and installs the single fuel cell assembly 2 on a fuel cell assembly frame 3, and each fuel cell assembly frame 3 is connected with the underframe 100 of the assembly frame 1 through the guide rail mechanism 4, so that not only can an organic whole be formed, the modal performance of the whole system be ensured, but also the rapid overhaul and the regional overhaul can be realized, and the overhaul efficiency is greatly improved.
The above-described embodiments are merely illustrative of the principles and functions of the present invention, and some of the practical examples, not intended to limit the invention; it should be noted that modifications and improvements can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the present invention.
Claims (15)
1. A modular fuel cell system for rail transit, characterized by: comprising the following steps: the assembly frame, the assembly frame is including the first layer frame that is used for arranging fuel cell module and the second floor frame that is used for arranging cooling system module, first layer frame includes chassis and encloses the frame, the second floor frame is located the top of first layer frame, fuel cell module includes two sets at least fuel cell assembly, and every fuel cell assembly integration is installed on a fuel cell assembly frame, connects through guide rail mechanism between every fuel cell assembly frame and the chassis of first layer frame, guide rail mechanism includes: two sets of guide rail assemblies that are parallel arrangement, every guide rail assembly of group includes: the first guide rail piece, the second guide rail piece, the third guide rail piece, the first ball retainer, the second ball retainer, the first ball retainer spacing piece and the second ball retainer spacing piece, the second guide rail piece is arranged between the first guide rail piece and the third guide rail piece, the first guide rail piece is fixedly connected with the underframe of the first layer frame, the third guide rail piece is fixedly connected with the fuel cell assembly frame, the first ball retainer is arranged between the first guide rail piece and the second guide rail piece, a plurality of first balls are arranged on the first ball retainer, the first guide rail piece is provided with a first guide rail groove matched with the plurality of first balls, the second guide rail piece is provided with a second guide rail groove matched with the plurality of first balls, the second ball retainer is arranged between the second guide rail piece and the third guide rail piece, a plurality of second balls are arranged on the second ball retainer, the second guide rail piece is provided with a third guide rail groove matched with a plurality of second balls, the third guide rail piece is provided with a fourth guide rail groove matched with a plurality of second balls, one free end of the second guide rail piece is provided with a first end limiting structure matched with the first guide rail piece, the other free end of the second guide rail piece is provided with a second end limiting structure matched with the third guide rail piece, the cross section of the second guide rail piece is in an I-shaped arrangement, the second guide rail piece comprises an upper wide part, a lower wide part and a middle vertical connecting part for connecting the upper wide part and the lower wide part, the number of the second guide rail grooves is two, the two second guide rail grooves are respectively arranged at the upper wall and the lower wall of the upper wide part on one side of the middle vertical connecting part, the number of the third guide rail grooves is two, the two third guide rail grooves are respectively arranged at the lower wall of the upper wide part and the upper wall of the lower wide part on the other side of the middle vertical connecting part, the number of the first guide rail grooves is two, the two first guide rail grooves are respectively arranged on the upper side wall and the lower side wall of the first guide rail piece, the number of the fourth guide rail grooves is two, and the two fourth guide rail grooves are respectively arranged on the upper side wall and the lower side wall of the third guide rail piece.
2. A modular fuel cell system for rail transit as claimed in claim 1, wherein: the first end limiting structure comprises a first limiting groove arranged at the end part of the second guide rail piece and a first limiting block arranged at the end part of the first guide rail piece, and the second end limiting structure comprises a second limiting groove arranged at the end part of the second guide rail piece and a second limiting block arranged at the end part of the third guide rail piece.
3. A modular fuel cell system for rail transit as claimed in claim 1, wherein: the first ball retainer and the second ball retainer are identical in structure, the cross sections of the first ball retainer and the second ball retainer are U-shaped, the first ball retainer and the second ball retainer comprise a base, a first bending part and a second bending part, the first bending part is bent and extended from one end of the base, the second bending part is bent and extended from the other end of the base, and a plurality of ball accommodating grooves which are uniformly distributed are formed in the first bending part and the second bending part.
4. A modular fuel cell system for rail transit as claimed in claim 1, wherein: the number of the first ball retainer limiting pieces is two, one of the first ball retainer limiting pieces is arranged at the outer end of the first guide rail piece, the other first ball retainer limiting piece is arranged at the inner end of the second guide rail piece, the number of the second ball retainer limiting pieces is two, one of the second ball retainer limiting pieces is arranged at the outer end of the second guide rail piece, and the other second ball retainer limiting piece is arranged at the inner end of the third guide rail piece.
5. A modular fuel cell system for rail transit as claimed in claim 1, wherein: an assembly frame mounting seat, a first guide rail mounting seat, an assembly frame lifting seat, a tail pipe arrangement mounting seat and a protective cover mounting seat are arranged on the underframe of the first layer of frame.
6. A modular fuel cell system for rail transit as defined in claim 5, wherein: and a waist hole is formed in the assembly frame mounting seat.
7. A modular fuel cell system for rail transit as claimed in claim 1, wherein: the aluminum honeycomb panel is characterized in that a plurality of windows are formed around and at the top of the surrounding frame, each window is covered by a protective cover, the protective cover is formed by bonding an aluminum honeycomb panel and aluminum side plates arranged around the aluminum honeycomb panel through glue solution, and the aluminum side plates are connected with the surrounding frame through bolts.
8. A modular fuel cell system for rail transit as defined in claim 7, wherein: the protective covers positioned on the front side and the rear side of the enclosure are provided with ventilation grids.
9. A modular fuel cell system for rail transit as defined in claim 7, wherein: and a cooling pipeline interface hole and an electric interface hole are arranged on the protective cover positioned at the top of the enclosure frame.
10. A modular fuel cell system for rail transit as claimed in claim 1, wherein: the fuel cell assembly frame and the assembly frame are formed by assembling and welding low alloy steel pipes and plate bending pieces.
11. A modular fuel cell system for rail transit as claimed in claim 1, wherein: the fuel cell assembly frame comprises a second guide rail mounting seat, a cooling liquid discharge port, a galvanic pile mounting seat, a shock pad and a DC/DC mounting bracket.
12. A modular fuel cell system for rail transit as claimed in claim 1, wherein: the heat dissipation system module includes: the radiator comprises a main radiator, an auxiliary radiator, an expansion water tank and a radiator controller, wherein the auxiliary radiator and the expansion water tank are arranged at the top of the second-layer frame, and the main radiator is splayed and arranged at two sides of the top of the second-layer frame.
13. A modular fuel cell system for rail transit as claimed in claim 1, wherein: the rail transit combined fuel cell system further includes an air intake filter system disposed on top of the first tier frame of the assembly frame.
14. A modular fuel cell system for rail transit as claimed in claim 1, wherein: the fuel cell module comprises four sets of fuel cell assemblies which are arranged in a 2 x 2 array.
15. A modular fuel cell system for rail transit as claimed in claim 14, wherein: a gap is arranged between every two adjacent sets of fuel cell components, and a tail gas discharge pipeline, a hydrogen supply pipeline and a high-voltage output wire bundle are arranged in the gap.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310404076.XA CN116135585B (en) | 2023-04-17 | 2023-04-17 | Combined fuel cell system for rail transit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310404076.XA CN116135585B (en) | 2023-04-17 | 2023-04-17 | Combined fuel cell system for rail transit |
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| CN116135585A CN116135585A (en) | 2023-05-19 |
| CN116135585B true CN116135585B (en) | 2023-08-18 |
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| CN116135585A (en) | 2023-05-19 |
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