CN114347811A - Fuel cell system for dual-system rail transit and rail transit - Google Patents

Abstract

The invention provides a dual-system rail transit fuel cell system and rail vehicle, and relates to the technical field of fuel cells. The fuel cell system for dual-system rail transit includes a system protective cover, a fuel cell assembly, a bearing chassis and two system bearing brackets; the two system bearing brackets are arranged on the bearing chassis in parallel, and the length direction of the system bearing bracket is the same as that of the bearing bracket. The length direction of the chassis is the same, and the two adjacent system carriers are connected by frame connecting beams; the fuel cell assembly is arranged on the carrier chassis and the system carrier; the carrier chassis is provided with a first shield mounting seat, The system protective cover is detachably mounted on the first protective cover mounting seat. The rail vehicle includes a vehicle body and a dual-system rail transit fuel cell system; the dual-system rail transit fuel cell system is arranged on the vehicle body. The technical effect of easy installation is achieved.

Description

Dual-system rail transit fuel cell system and rail vehicle

technical field

The present invention relates to the technical field of fuel cells, and in particular, to a fuel cell system and a rail vehicle for dual-system rail transportation.

Background technique

At present, there are two main modes of rail transit vehicles, one is catenary power supply, and the other is driven by diesel engines. Diesel engines have problems of emission and environmental pollution; and the way of catenary power supply also has some problems. For example, the power source of catenary power supply, like our power structure, more than 60% of the electricity is burning fossil energy, which is not completely zero-emission, and the erection of catenary affects the urban landscape, the infrastructure construction period is long, the cost is high, and the interconnectivity is poor. , when a natural disaster occurs, the recoverability is relatively poor. The use of hydrogen fuel cells in rail transit can solve the above problems, is environmentally friendly, and has fast infrastructure construction, low investment, high flexibility, safety, high interconnectivity, simple infrastructure maintenance, and no impact on the power grid. Then there is the advantage of long cruising range.

However, the existing rail transit fuel cell system occupies a large space, which is not conducive to installation.

Therefore, it has become an important technical problem to be solved by those skilled in the art to provide a dual-system rail transit fuel cell system and rail vehicle that are easy to install.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a fuel cell system and a rail vehicle for dual-system rail transportation, so as to alleviate the technical problem of inconvenient installation in the prior art.

In a first aspect, an embodiment of the present invention provides a fuel cell system for dual-system rail transit, including a system shield, a fuel cell assembly, a bearing chassis, and two system bearing brackets;

Two of the system carriers are arranged on the carrier base in parallel, and the length direction of the system carrier is consistent with the length direction of the carrier base, and the length between the two adjacent system carriers is Connected by frame connecting beams;

the fuel cell assembly is arranged on the carrier chassis and the system carrier;

A first protective cover mounting seat is provided on the bearing chassis, and the system protective cover is detachably mounted on the first protective cover mounting seat.

In conjunction with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the above-mentioned system protective cover includes a cover body, a front panel and a rear panel;

The bottom of the cover body is provided with a second protective cover mounting seat adapted to the protective cover mounting seat;

the front plate is arranged at the front end of the cover body, and the rear plate is arranged at the rear end of the cover body;

Ventilation grills are provided on both the front panel and the rear panel.

In conjunction with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the cover body includes a trapezoidal upper cover and a side cover, and side covers are provided on both sides of the trapezoidal upper cover, and Three surfaces of the trapezoidal upper cover are provided with access doors that can be opened and closed;

And the trapezoidal upper cover is provided with a tail gas discharge seat provided with a tail gas discharge filter;

The side cover is provided with air intake holes.

In conjunction with the first aspect, the embodiment of the present invention provides a possible implementation of the first aspect, wherein the front plate and the rear plate are detachably provided with a plurality of maintenance plates for maintenance, And both the front plate and the rear plate are provided with a plurality of passages for the entry and exit of the internal pipelines.

In conjunction with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the above fuel cell assembly includes an air filter system and an electrical module;

A first mounting seat for mounting the system carrier is provided on the bearing chassis, and a second mounting seat adapted to the first mounting seat is provided at the bottom of the system carrier;

Both ends of the carrying chassis are provided with air filter installation seats for carrying the air filter system, and both ends of the carrying chassis are also provided with electrical installation seats for carrying electrical modules.

In conjunction with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the above-mentioned bearing chassis is provided with a plurality of bearing chassis lifting seats.

In conjunction with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the fuel cell assembly further includes a PTC heater, a solenoid valve, a humidifier, an air compressor, a high-pressure water pump, an intercooler device and auxiliary water pump;

The system carrier includes a lower frame, an upper frame and a column;

One side of the lower frame is sequentially provided with a PTC mounting seat for mounting the PTC heater, a solenoid valve mounting for mounting a solenoid valve, and a humidifier mounting for mounting the humidifier. seat and the air compressor mount for installing the air compressor;

One side of the lower frame is sequentially provided with a high-pressure water pump mounting seat for installing the high-pressure water pump, an intercooler mounting seat for installing the intercooler, and an auxiliary water pump for installing the auxiliary water pump mount;

The outer side of the column is provided with a system hoisting seat.

In conjunction with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the fuel cell assembly further includes a stack and a low-voltage electronic system;

A low-voltage mounting seat for mounting the low-voltage electronic system and a stack mounting seat for mounting the stack are sequentially arranged on the upper frame along its length direction;

The low-pressure mounting seat is located above the high-pressure water pump mounting seat.

In conjunction with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the fuel cell assembly further includes a gas-liquid separator;

A gas-liquid separator mounting seat for installing the gas-liquid separator is provided on the vertical column, and the gas-liquid separator mounting seat is located above the PTC mounting seat.

In a second aspect, an embodiment of the present invention provides a rail vehicle, including a vehicle body and the dual-system rail transit fuel cell system;

The dual-system rail transit fuel cell system is arranged on the vehicle body.

Beneficial effects:

The embodiment of the present invention provides a fuel cell system for dual-system rail transit, including a system protective cover, a fuel cell assembly, a bearing chassis and two system bearing brackets; the two system bearing brackets are arranged on the bearing chassis in parallel, And the length direction of the system carrier is consistent with the length direction of the carrier chassis, and the two adjacent system carriers are connected by frame connecting beams; the fuel cell assembly is arranged on the carrier chassis and the system carrier; on the carrier chassis A first protective cover mounting seat is provided, and the system protective cover is detachably mounted on the first protective cover mounting seat.

Specifically, by arranging the fuel cell components on the bearing chassis and the system bearing bracket, the staff can install the fuel cell components on the bearing chassis and the system bearing bracket in an orderly manner in the factory, and then hoist the bearing chassis The whole body is transferred to the vehicle body in a way that is easy to install, so that the staff does not need to install the fuel cell assembly in the narrow space of the vehicle body. In addition, the two system carriers are connected and fixed through the frame connecting beam to improve the rigidity of the overall structure. , During the driving process of the vehicle, ensure that the two system carriers will not shake.

The embodiment of the present invention provides a rail vehicle, including a vehicle body and a fuel cell system for dual-system rail transit; the fuel cell system for dual-system rail transit is arranged on the vehicle body. Compared with the prior art, the rail vehicle has the above advantages, which will not be repeated here.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a fuel cell system for dual-system rail transit provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a fuel cell system for dual-system rail transit provided by an embodiment of the present invention (the system protective cover is not shown);

3 is a schematic diagram of a system carrier supporting fuel cell components in a fuel cell system for dual-system rail transit provided by an embodiment of the present invention (the stack is not shown);

Fig. 4 is the top view of Fig. 3;

5 is a schematic diagram of a carrying chassis and a system carrying frame in a dual-system rail transit fuel cell system according to an embodiment of the present invention;

6 is a schematic diagram of a bearing chassis in a dual-system rail transit fuel cell system provided by an embodiment of the present invention;

7 is a schematic diagram of a system carrier in a dual-system rail transit fuel cell system provided by an embodiment of the present invention;

8 is a top view of a system carrier in a dual-system rail transit fuel cell system provided by an embodiment of the present invention.

icon:

100-system protection cover; 110-cover body; 111-second protection cover mounting seat; 112- trapezoidal upper cover; 113-side cover; 114-access door; 115-exhaust exhaust seat; 116-air intake hole; 120 - front panel; 130 - ventilation grille; 140 - maintenance panel; 150 - channel;

200-fuel cell assembly; 201-air filter system; 202-electrical module; 203-PTC heater; 204-solenoid valve; 205-humidifier; 206-air compressor; 207-high pressure water pump; 208-intercooler ; 209- auxiliary water pump; 210- stack; 211- low-voltage electronic system;

300-bearing chassis; 301-first protective cover mounting seat; 302-first mounting seat; 303-bearing chassis lifting seat; 310-air filter mounting seat; 320-electrical appliance mounting seat;

400-system carrier; 401-second mounting seat; 410-lower frame; 411-PTC mounting seat; 412-solenoid valve mounting; 413-humidifier mounting seat; 414-air compressor mounting seat; 415-high pressure water pump Mounting seat; 416-Intercooler mounting seat; 417-Auxiliary water pump mounting seat; 420-Upper frame; 421-Low voltage mounting seat; Separator mount;

500 - Frame connecting beams.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

1 , 2 , 3 , 4 , 5 , 6 , 7 and 8 , an embodiment of the present invention provides a dual-system rail transit fuel cell system, including a system shield 100 , The fuel cell assembly 200 , the carrier chassis 300 and two system carriers 400 ; the two system carriers 400 are arranged on the carrier chassis 300 in parallel, and the length direction of the system carrier 400 is consistent with the length direction of the carrier chassis 300 , the two adjacent system carriers 400 are connected by frame connecting beams 500; the fuel cell assembly 200 is provided on the carrier chassis 300 and the system carrier 400; the carrier chassis 300 is provided with a first protective cover mounting seat 301 , the system protective cover 100 is detachably mounted on the first protective cover mounting seat 301 .

Specifically, by arranging the fuel cell assembly 200 on the carrying chassis 300 and the system carrying frame 400, the staff can install the fuel cell assembly 200 on the carrying chassis 300 and the system carrying frame 400 in an orderly manner in the factory Then, the whole is transferred to the vehicle body by hoisting the bearing base, which is convenient for installation, so that the staff does not need to install the fuel cell assembly 200 in the narrow space in the vehicle body. The connection is fixed to improve the rigidity of the overall structure, and during the running process of the vehicle, it is ensured that the two system carriers 400 will not shake.

Specifically, in the actual installation process, the number of system carriers 400 is two, and the two sets of system carriers 400 are arranged on the carrier base 300 oppositely, that is, the head of one set of system carriers 400 faces the carrier bottom The head of the rack 300 is placed, and the head of another system carrier 400 is placed toward the rear of the carrier chassis 300, so that the power car of the rail vehicle can accommodate two sets of fuel cell systems, thereby increasing the power of the rail vehicle.

Specifically, two sets of 100-kilowatt fuel cell assemblies 200 can be arranged on the carrying chassis 300 and the system carrying frame 400 in an oblique and symmetrical manner, thereby improving the power of the rail vehicle.

Wherein, a plurality of lifting bases 303 are provided on the bearing chassis 300 , so that the staff can hoist the first bearing chassis 300 .

Referring to FIGS. 1-8 , in the optional solution of this embodiment, the system shield 100 includes a cover body 110 , a front plate 120 and a rear plate; Two protective cover mounting bases 111 ; the front plate 120 is arranged at the front end of the cover body 110 , and the rear plate is arranged at the rear end of the cover body 110 ; both the front plate 120 and the rear plate are provided with ventilation grids 130 .

Referring to FIGS. 1 to 8 , in the optional solution of this embodiment, the cover body 110 includes a trapezoidal upper cover 112 and a side cover 113 , side covers 113 are provided on both sides of the trapezoidal upper cover 112 , and the trapezoidal upper cover 112 There are openable and closable inspection doors 114 on the three sides of the upper cover 112 ; the upper trapezoidal cover 112 is provided with an exhaust discharge seat 115 with an exhaust filter; the side cover 113 is provided with an air intake hole 116 .

Referring to FIG. 1 to FIG. 8 , in the optional solution of this embodiment, a plurality of maintenance panels 140 for maintenance are detachably provided on both the front panel 120 and the rear panel, and the front panel 120 and the rear panel are provided with a plurality of maintenance panels 140 for maintenance. Both of them are provided with a plurality of channels 150 for the entry and exit of internal pipelines.

Specifically, by setting the system protective cover 100, the fuel cell system can be protected from direct sunlight, rain and snow erosion, and the entry of falling objects. However, it should be noted that the system protective cover 100 does not have airtightness. So that the outside air can enter into the system protective cover 100 for heat dissipation.

Among them, the cover body 110 includes a side cover 113 and a trapezoidal upper cover 112, which can meet the requirements of rail transit boundaries, and the side cover 113 and the trapezoidal upper cover 112 are mainly welded by aluminum honeycomb panels and aluminum profile frames. , high strength and good thermal insulation effect.

In addition, in order to facilitate the maintenance of the system, detachable access doors 114 are provided on three sides of the trapezoidal upper cover 112, and the front panel 120 and the rear panel can be provided with detachable different sizes and different positions according to the maintenance requirements of the system. maintenance board 140.

Moreover, two hoisting holes are provided on the two side covers 113 to facilitate the overall hoisting and installation of the system protective cover 100 .

In addition, four second shield mounting seats 111 with waist-shaped holes are respectively provided on the lower sides of the left and right sides of the cover body 110 , which can be adjusted back and forth, left and right, so as to compensate for the influence of manufacturing errors.

At the same time, ventilation grilles 130 are provided on both the front panel 120 and the rear panel to promote the circulation of air in the system, facilitate the loss of heat generated by the system, and ensure the performance of the system.

Meanwhile, both sides of the cover body 110 are provided with air intake holes 116 for the air filtration system to inhale air.

At the same time, according to the interface requirements of the system, the rear side plate of the protective cover is provided with channels 150 such as cooling pipeline interface holes and electrical interface holes.

Referring to FIGS. 1 to 8 , in the optional solution of this embodiment, the fuel cell assembly 200 includes an air filter system 201 and an electrical module 202 ; the bearing chassis 300 is provided with a first mounting seat for installing the system bearing bracket 400 302, the bottom of the system carrier 400 is provided with a second mounting seat 401 adapted to the first mounting seat 302; both ends of the carrier chassis 300 are provided with air filter mounting seats 310 for carrying the air filter system 201, Both ends of the rack 300 are further provided with electrical installation seats 320 for carrying the electrical modules 202 .

The electrical module 202 includes a high voltage distribution box and an air pressure controller for controlling the air compressor 206 .

Referring to FIGS. 1-8 , in an optional solution of this embodiment, the fuel cell assembly 200 further includes a PTC heater 203 (Positive Temperature Coeffcient, positive temperature coefficient thermistor), a solenoid valve 204, a humidifier 205, Air compressor 206, high pressure water pump 207, intercooler 208 and auxiliary water pump 209; system carrier 400 includes lower frame 410, upper frame 420 and upright column 430; PTC mount 411 for PTC heater 203, solenoid valve mount 412 for mounting solenoid valve 204, humidifier mount 413 for mounting humidifier 205, and air compressor mount for mounting air compressor 206 414; one side of the lower frame 410 is sequentially provided with a high-pressure water pump mounting seat 415 for mounting the high-pressure water pump 207, an intercooler mounting seat 416 for mounting the intercooler 208, and a mounting seat for the auxiliary water pump 209 along its length direction. Auxiliary water pump mounting seat 417; a system hoisting seat 431 is provided on the outer side of the upright column 430.

The arrangement of the system hoisting base 431 enables the staff to conveniently hoist the system carrier 400 to the carrier base 300 .

Referring to FIG. 1 to FIG. 8 , in the optional solution of this embodiment, the fuel cell assembly 200 further includes a stack 210 and a low-voltage electronic system 211 ; the upper frame 420 is sequentially provided with a low-voltage electronic system 211 along its length direction for installing the low-voltage electronic system 211 . The low-voltage mounting seat 421 and the stack mounting seat 422 for installing the stack 210 are shown; the low-voltage mounting seat 421 is located above the high-pressure water pump mounting seat 415 .

Referring to FIGS. 1-8 , in the optional solution of this embodiment, the fuel cell assembly 200 further includes a gas-liquid separator; the upright column 430 is provided with a gas-liquid separator mounting seat 432 for installing the gas-liquid separator. The liquid separator mount 432 is located above the PTC mount 411 .

Specifically, when installing the components on the system carrier 400, the staff first installs the humidifier 205 and the intercooler 208 on the lower frame 410, then connects the humidifier 205 and the intercooler 208, and then installs bypass valve, and connect both the humidifier 205 and the intercooler 208 to the bypass valve, thereby completing the normal operation of both the humidifier 205 and the intercooler 208; The components on both sides of the intercooler 208, specifically, the PTC heater 203 can be installed first, and then the high-pressure water pump 207 can be installed. The air compressor 206 is installed, the air compressor 206 communicates with the stack 210 , and can provide air for the stack 210 . The air compressor 206 is provided with an air compressor 206 controller, and the working state of the air compressor 206 can be controlled by the air compressor 206 controller.

Wherein, after the installation of the lower frame 410 of the system carrier 400 is completed, continue to install the components in the row of the upper frame 420, firstly install the stack 210, and connect the components on the lower frame 410 to the stack 210, and then install the low-voltage electronic system 211, and the low-voltage electronic system 211 includes an FCCU (fuel cell control unit, fuel cell control unit) and a DCDC (Direct Current to Direct Current, DC voltage to DC voltage).

Among them, a hoisting seat is provided on the outer side of the upright column 430, through which the staff can conveniently use a crane to hoist the system carrier 400, so as to transfer the system carrier 400 equipped with various components to the vehicle body, which is convenient for the staff to install .

It should be pointed out that, through this arrangement, the components of the fuel cell system can be installed on the system carrier 400, and then the system carrier 400 can be hoisted on the vehicle body by a crane, which greatly improves the assembly efficiency and is reasonable Use space.

It should be pointed out that the bearing chassis 300 and the system bearing bracket 400 in the dual-system rail transit fuel cell system provided in this embodiment are made of low-carbon alloy steel pipes and sheet metal bending parts assembled and welded, and the material cost is relatively low. , to avoid the overall secondary machining.

This embodiment provides a rail vehicle, including a vehicle body and a fuel cell system for dual-system rail transit; the fuel cell system for dual-system rail transit is provided on the vehicle body.

Specifically, compared with the prior art, the rail vehicle provided in this embodiment has the advantages of the above-mentioned dual-system rail transit fuel cell system, which will not be repeated here.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some or all of the technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A fuel cell system for dual-system rail transit, comprising: a system protective cover (100), a fuel cell assembly (200), a bearing chassis (300) and two system bearing brackets (400); The two system carriers (400) are arranged on the carrier chassis (300) in parallel, and the length direction of the system carrier (400) is consistent with the length direction of the carrier chassis (300), The two adjacent system carriers (400) are connected by frame connecting beams (500); The fuel cell assembly (200) is provided on the carrier chassis (300) and the system carrier (400); A first protective cover mounting seat (301) is provided on the bearing chassis (300), and the system protective cover (100) is detachably mounted on the first protective cover mounting seat (301). 2 . The fuel cell system for dual-system rail transit according to claim 1 , wherein the system protective cover ( 100 ) comprises a cover body ( 110 ), a front plate ( 120 ) and a rear plate; 2 . The bottom of the cover body (110) is provided with a second protective cover mounting seat (111) adapted to the protective cover mounting seat; The front plate (120) is arranged at the front end of the cover body (110), and the rear plate is arranged at the rear end of the cover body (110); A ventilation grill (130) is provided on both the front panel (120) and the rear panel. 3. The fuel cell system for dual-system rail transit according to claim 2, wherein the cover body (110) comprises a trapezoidal upper cover (112) and a side cover (113), and the trapezoidal upper cover (112) ) are provided with side covers (113) on both sides, and openable and closable access doors (114) are provided on three sides of the trapezoidal upper cover (112); And the trapezoidal upper cover (112) is provided with a tail gas discharge seat (115) provided with a tail gas discharge filter; The side cover (113) is provided with an air intake hole (116). 4 . The fuel cell system for dual-system rail transit according to claim 2 , wherein the front plate ( 120 ) and the rear plate are both detachable and provided with a plurality of maintenance devices for maintenance. 5 . A plate (140) is provided, and both the front plate (120) and the rear plate are provided with a plurality of passages (150) for the entry and exit of internal pipelines. 5. The fuel cell system for dual-system rail transit according to any one of claims 1-4, wherein the fuel cell assembly (200) comprises an air filter system (201) and an electrical module (202); A first mounting seat (302) for mounting the system carrier (400) is provided on the bearing chassis (300), and a bottom of the system carrier (400) is provided with the first mounting seat (400). 302) an adapted second mounting seat (401); Both ends of the carrying chassis (300) are provided with air filter mounting seats (310) for carrying the air filter system (201), and both ends of the carrying chassis (300) are further provided with electrical appliances for carrying electrical appliances Appliance mount (320) for module (202). 6. The fuel cell system for dual-system rail transit according to claim 5, characterized in that, the bearing chassis (300) is provided with a plurality of bearing chassis lifting seats (303). 7. The fuel cell system for dual-system rail transit according to claim 5, wherein the fuel cell assembly (200) further comprises a PTC heater (203), a solenoid valve (204), a humidifier (205) ), air compressor (206), high pressure water pump (207), intercooler (208) and auxiliary water pump (209); The system carrier (400) includes a lower frame (410), an upper frame (420) and a column (430); One side of the lower frame (410) is sequentially provided with a PTC mounting seat (411) for mounting the PTC heater (203) and a solenoid valve mounting (412) for mounting the solenoid valve (204) along its length direction ), a humidifier mounting seat (413) for installing the humidifier (205), and an air compressor mounting seat (414) for installing the air compressor (206); A high-pressure water pump mounting seat (415) for installing the high-pressure water pump (207) and an intercooler for installing the intercooler (208) are sequentially arranged on one side of the lower frame (410) along its length direction. The device mounting seat (416) and the auxiliary water pump mounting seat (417) for installing the auxiliary water pump (209); A system hoisting seat (431) is arranged on the outer side of the upright column (430). 8. The fuel cell system for dual-system rail transit according to claim 7, wherein the fuel cell assembly (200) further comprises an electric stack (210) and a low-voltage electronic system (211); The upper frame (420) is provided with a low-voltage mounting seat (421) for mounting the low-voltage electronic system (211) and a stack mounting seat (422) for mounting the stack (210) in sequence along its length direction ); The low-pressure mounting seat (421) is located above the high-pressure water pump mounting seat (415). 9. The fuel cell system for dual-system rail transit according to claim 8, wherein the fuel cell assembly (200) further comprises a gas-liquid separator; The upright column (430) is provided with a gas-liquid separator mounting seat (432) for mounting the gas-liquid separator, and the gas-liquid separator mounting seat (432) is located above the PTC mounting seat (411) . 10. A rail vehicle, characterized by comprising a vehicle body and the dual-system rail transit fuel cell system according to any one of claims 1-9; The dual-system rail transit fuel cell system is arranged on the vehicle body.

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