Integrated air supply duct for high-speed train

Abstract

An integrated air supply duct for a high-speed train is characterized in that the integrated air supply duct comprises an air supply duct body, a passenger room top plate and passenger room lighting equipment, the air supply duct body is of a core bearing and airflow conveying structure, and the passenger room top plate serves as an air supply duct body bottom plate and a passenger room decoration top plate; the passenger room lighting equipment is integrated in the passenger room top plate to form an integrated structure integrating air channel, top plate and lighting, the interior of the air supply channel body is divided into a cold air cavity and a warm air cavity which are independent of each other through a partition plate, and independent air supply of cold air and warm air in the cavities is achieved. The structure integration degree is high, and the space utilization rate is remarkably improved; cold air and hot air are independently supplied in different cavities, so that the air distribution is more reasonable; the system weight is greatly reduced, and the vehicle is assisted to be light; the assembly process is simplified, and the production efficiency is remarkably improved; the connection structure is reliable, and the maintenance convenience is improved; the production cost is reduced and the economic advantage is obvious.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of rail transit, in particular to a multifunctional integrated air supply duct for high-speed train. BACKGROUND

[0002] In the field of manufacturing and assembling of high-speed train motor train unit, as the core component for ensuring the ventilation and temperature regulation of passenger compartment, the structure design and assembly process of air supply duct directly affect the overall performance and production efficiency of the vehicle.

[0003] There are mainly two structural forms of air supply duct used in existing motor train unit: one is the structure of aluminum plate pasting thermal insulation cotton, which has certain structural strength and thermal insulation effect, but the overall weight is large, and the pasting process of thermal insulation cotton and aluminum plate is complicated, and problems such as thermal insulation cotton falling off and aging are prone to occur during long-term use; the other is the structure of light composite board, which has certain improvement in weight control, but still has deficiencies in structural integration and assembly convenience.

[0004] The above two kinds of air supply ducts are installed separately on the roof, and the passenger compartment roof needs to be hoisted separately, so the processes of air supply duct installation and passenger compartment roof hoisting are independent and lack of cooperation. This separated design and assembly mode results in that the structural space of the roof area cannot be fully utilized, and a large amount of space is occupied by the installation gap of scattered components. At the same time, the independent installation process not only increases the labor cost and time cost in the assembly process, but also easily causes installation errors due to improper connection of multiple processes, affecting the assembly accuracy of the vehicle.

[0005] With the development of motor train unit towards the direction of lightweight, integration and low cost, the limitations of existing air supply duct in space utilization, structural integration and assembly process are increasingly prominent, which cannot meet the design and production requirements of new generation motor train unit. SUMMARY

[0006] The core purpose of the present application is to overcome the defects and deficiencies of the prior art, and to provide a multifunctional air supply duct for new generation high-speed train with high integration degree, reasonable structure design and convenient assembly.

[0007] To achieve the above-mentioned purpose, the present application provides an integrated air supply duct for high-speed train, characterized in that: it comprises three core components of air supply duct body, passenger compartment roof and passenger compartment lighting equipment, the air supply duct body is the core bearing and airflow conveying structure, the passenger compartment roof is made of composite board and serves as the air supply duct body bottom plate and passenger compartment decorative roof plate, the passenger compartment lighting equipment is integrated in the passenger compartment roof, forming an integrated structure of "air duct-roof-illumination", the inside of the air supply duct body is divided into independent cold air cavity and warm air cavity by a partition plate, realizing independent air supply of cold and warm air.

[0008] Further, the cold air cavity is in a "convex" structure as a whole, and is formed by a wind channel top plate, a cold air cavity side plate, a wind channel vertical partition plate, a wind channel horizontal partition plate and a passenger compartment top plate.

[0009] Further, the air supply channel main body is provided with a cold air supply cavity on both sides, the cold air cavity is seamlessly connected to one end of the cold air supply cavity, and the other end of the cold air supply cavity is connected to a cold air supply port.

[0010] Further, the cold air cavity side plate, the wind channel horizontal partition plate and the passenger compartment top plate are connected through C-shaped clamping groove profiles, and the opening size of the C-shaped clamping groove profiles matches the edge thickness of the cold air cavity side plate, the wind channel horizontal partition plate and the passenger compartment top plate.

[0011] Further, the warm air cavity is in a "double-port" structure as a whole, and is formed by a wind channel top plate, a wind channel vertical partition plate, a wind channel horizontal partition plate and a warm air cavity side plate, and is symmetrically distributed on both sides of the cold air cavity, and the warm air cavity side plate is connected to a warm air supply port, so that warm air is directionally delivered from both sides of the passenger compartment, and forms a complementary air distribution pattern with the cold air.

[0012] Further, the wind channel top plate, the wind channel vertical partition plate and the wind channel horizontal partition plate are connected and fixed through fixed angle irons.

[0013] Further, the passenger compartment lighting device is designed in an embedded mode and is integrated in a preset mounting groove of the passenger compartment top plate, wherein the lighting lamps in the passenger compartment lighting device are flush with the surface of the passenger compartment top plate, the lines in the passenger compartment lighting device are arranged through the gap between the passenger compartment top plate and the cold air cavity side plate, and the line channel and the air flow cavity are isolated from each other.

[0014] Further, the air supply channel main body is connected with the vehicle body sliding groove through the side lifting lug on the cold air cavity side plate and the middle lifting lug on the wind channel top plate, so as to form a triangular supporting installation structure.

[0015] Further, a check door is bolted to the position corresponding to the middle lifting lug of the wind channel top plate, a sealing gasket is arranged on the connecting surface of the check door and the wind channel top plate, so as to ensure the sealing property of the wind channel and prevent air leakage.

[0016] Further, the multiple-section air supply channels are connected through wind channel flanges, the wind channel flanges are arranged at the end of the air supply channel and are integrally formed with the air supply channel main body structure, the flange plate is provided with uniformly distributed connecting holes, the flange plates of adjacent two-section air supply channels are aligned, the fastening is realized by penetrating the connecting holes through bolts, and a sealing washer is arranged on the connecting surface.

[0017] The present application has the following advantages and progress over the prior art:

[0018] (1)High degree of structural integration, significantly improved space utilization

[0019] The present application integrates the air supply duct body, the passenger compartment top plate and the passenger compartment lighting into one, completely abandoning the traditional separate layout, so that the originally scattered space is efficiently integrated, and the structural space utilization of the roof area is improved by more than 30%. The passenger compartment top plate serves as the air supply duct bottom plate, and the passenger compartment lighting device is embeddedly installed in the passenger compartment top plate, without the need for additional reserved installation space, effectively compressing the gap between components, providing more space for the arrangement of other equipment of the train, and fully meeting the new requirements of the new generation of EMU vehicle integration design.

[0020] (2) Separate air supply for cold and warm air chambers, more reasonable air flow organization

[0021] Through the independent design of the "convex" cold air chamber and the "double-port" warm air chamber, the cold and warm air are separated and delivered, avoiding the problem of low temperature regulation efficiency and uneven temperature distribution in the passenger compartment caused by the mixing of cold and warm air in the traditional air supply duct. The combination design of the "C" shaped cold air supply chamber and the "long circle" shaped warm air supply port allows the cold and warm air to be delivered uniformly from different directions and different positions to the passenger compartment, forming a complementary air flow distribution pattern, and the internal temperature uniformity of the passenger compartment is improved by more than 25%, significantly improving the passenger's ride comfort.

[0022] (3) System weight is greatly reduced, helping vehicle lightweight

[0023] The integrated structure reduces a large number of repeated connecting components and supporting structures, and the passenger compartment top plate is made of lightweight high-strength composite board. Compared with the combination structure of the traditional aluminum plate with thermal insulation cotton air supply duct and independent top plate, the total weight of the system of the present application is reduced by 20%-25%, effectively reducing the traction load of the train and reducing energy consumption, in line with the trend of lightweight development of high-speed trains.

[0024] (4) Assembly process is simplified, production efficiency is significantly improved

[0025] The installation of the traditional air supply duct, passenger compartment top plate and passenger compartment lighting requires three independent processes, and there is a waiting time between processes. The integrated structure of the present application reduces the installation process to one, and through the rapid positioning of the C-shaped slot profile and the cooperation of bolts and rivets, the assembly process is greatly simplified, the assembly time of a single train is shortened by more than 40%, and the manual labor and equipment occupation during assembly are reduced, significantly improving the production efficiency of the vehicle.

[0026] (5) Reliable connection structure, improved maintenance convenience

[0027] The connecting mode of the fixed angle iron combined with the C-shaped clamping groove profile guarantees the rigidity and stability of the structure, and effectively deals with the vibration and impact in the train running process through the elastic compensation effect of the C-shaped clamping groove, thereby prolonging the service life. The setting of the inspection door makes the inspection of the middle lifting lug not need to disassemble the whole air supply duct, and only needs to disassemble the inspection door to complete the related operation, thereby greatly reducing the later maintenance cost and inspection difficulty.

[0028] (6) Production cost is reduced, and economic advantage is obvious

[0029] The structure integration reduces the types and quantity of parts, reduces the cost of mold development, raw material procurement and processing and manufacturing, the simplification of the assembly process reduces the labor and time cost, and the reduction of the system weight and the reduction of energy consumption also provide support for the cost control in the train operation stage. In summary, compared with the prior art, the vehicle production manufacturing cost can be reduced by 15%-20% by the present application, and the economic advantage is obvious. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is an axial structure schematic view of the present application;

[0031] Figure 2 It is a cross-sectional structure schematic view of the present application;

[0032] Figure 3 It is an axial partial cross-sectional structure schematic view of the present application;

[0033] Figure 4 It is an axial partial cross-sectional structure schematic view of the present application C-shaped clamping groove profile connection;

[0034] Figure 5 It is an axial partial cross-sectional structure schematic view of the present application C-shaped cold air supply cavity;

[0035] Figure 6 It is an axial partial cross-sectional structure schematic view of the present application middle lifting lug installation inspection door;

[0036] Figure 7 It is a schematic view of airflow organization of the present application;

[0037] Wherein: 1, air supply duct main body; 2, passenger room top plate; 3, passenger room lighting equipment; 4, cold air cavity; 5, warm air cavity; 6, cold air supply cavity; 7, warm air supply port; 8, air duct top plate; 9, warm air cavity side plate; 10, cold air cavity side plate; 11, air duct vertical partition plate; 12, air duct horizontal partition plate; 13, fixed angle iron; 14, C-shaped clamping groove profile; 15, side lifting lug; 16, middle lifting lug; 17, air duct flange; 18, side top plate lifting lug; 19, cold air supply port; 20, inspection door. DETAILED DESCRIPTION

[0038] Reference Figure 1The figure shows the overall assembly form of the multifunctional air supply duct and the distribution relationship of each core component from the axial perspective, clearly presenting the integrated structural features of the "air duct - roof - lighting" integration. The air supply duct body 1 runs through the whole body along the axial direction as the core bearing structure, and the air duct roof 8 at the top is flat and smooth. The "C" shaped cold air supply cavity 6 and the "long circle" shaped warm air supply port 7 symmetrically distributed on both sides intuitively reflect the output layout of cold and warm air. The passenger compartment roof 2 is closely attached to the bottom of the air supply duct body 1, forming a complete bottom plate structure, and the passenger compartment lighting device 3 is evenly embedded in the preset slot of the passenger compartment roof 2, flush with the top plate surface, ensuring the decorative beauty. The side lugs 15 are symmetrically distributed on the axial end faces of the air supply duct body 1, and the middle lug 16 is arranged at the axial intermediate position of the air duct roof 8, which together constitute the connection and support system of the air supply duct body and the vehicle body; the air duct flange 17 is located at the axial end of the air supply duct body 1, providing a standardized connection interface for the splicing of the multi-section air supply duct. The core function of this figure is to clarify the assembly position, distribution rule and overall size relationship of each component in the axial direction, providing intuitive structural basis for the overall assembly positioning of the air supply duct, the butt joint installation with the vehicle body and the splicing of the multi-section air supply duct, ensuring the consistency and accuracy of the assembly process.

[0039] Referring to Figure 2 The figure focuses on the cross-sectional structure of the air supply duct, clearly showing the design principle, internal space division and cross-sectional form of the cold air cavity 4 and the warm air cavity 5 through the perspective of transverse section. In the cross-sectional view, the cold air cavity 4 is a obvious "convex" structure, located in the inner core area of the section, surrounded by the air duct roof 8, the cold air cavity side plate 10, the air duct vertical partition plate 11, the air duct horizontal partition plate 12 and the passenger compartment roof 2, forming a closed cold air flow cavity, and the convex structure maximizes the cold air containing space. The warm air cavity 5 is symmetrically distributed on both sides of the cold air cavity 4 in the form of "double mouth", surrounded by the air duct roof 8, the air duct vertical partition plate 11, the air duct horizontal partition plate 12 and the warm air cavity side plate 9 to form an independent closed cavity, and the "double mouth" structure on both sides corresponds to the installation position of the warm air supply port 7. The passenger compartment roof 2 serves as a common bottom plate, bearing the bottom closure of the cold air cavity 4 and the installation function of the passenger compartment lighting device 3.

[0040] Referring to Figure 3, the figure shows the key connection structure and the assembly relationship of the internal components of the air supply channel through an axial local section, focusing on the connection details of the air supply channel vertical partition plate 11 and the air supply channel horizontal partition plate 12 and the cold air cavity side plate 10. The section clearly shows the vertical intersection connection state of the air supply channel vertical partition plate 11 and the air supply channel horizontal partition plate 12, and the connecting node of the two is fitted with a fixed angle iron 13, which is rigidly fastened by bolts penetrating the connecting holes of the three, ensuring the stability and carrying capacity of the support structure inside the cavity. The end connection position of the cold air cavity side plate 10 and the air supply channel horizontal partition plate 12, and the connection position of the warm air cavity side plate 9 and the air supply channel horizontal partition plate 12 show the assembly gap control precision and connection fit between the two side plates and the air supply channel horizontal partition plate. The side top plate lifting lug 18 is bolted to the cold air cavity side plate 10, and the installation angle, fixed point and connection strength of the side top plate lifting lug directly affect the assembly flatness and stability of the side top plate. Through the hidden connection node and assembly details inside the air supply channel main body, the reliability and rationality of the connection structure design are verified, providing reference for bolt tightening torque control, connection precision adjustment and component processing error compensation in the assembly process.

[0041] Referring to Figure 4 , the figure focuses on the connection details of the C-shaped slot profile 14, and clearly shows its key connection role and connection method in multi-component assembly through a local section view. The opening direction, internal size, wall thickness and flatness of the C-shaped slot profile 14 can ensure the close fit with the connected components. The end of the cold air cavity side plate 10 is inserted into the opening on one side of the C-shaped slot profile 14, and the edge of the air supply channel horizontal partition plate 12 is inserted into the other side of the same slot. The slot realizes the precise docking and preliminary fixation of the two through its clamping force, and then is reinforced by bolts to form a stable connection structure; the edge of the passenger compartment top plate 2 and the bottom of the cold air cavity side plate 10 are connected by another group of C-shaped slot profiles 14, which wrap the connection ends of the two, achieving structure fixation and protecting the connection edge. The inner wall of the C-shaped slot profile 14 and the fitting surface of each component have no obvious gap, and the material has certain elastic properties, which can effectively compensate for the small errors generated during assembly, and at the same time enhance the anti-seismic performance of the connection part. Through the connection method, adaptive relationship and installation details of the C-shaped slot profile, the design advantages of simplifying the assembly process, ensuring the stability of the connection and compensating for the assembly error are verified, providing key basis for the size selection, material selection and assembly operation specification of the C-shaped slot profile.

[0042] Referring to Figure 5The figure focuses on the structural details and air flow output path of the "C" shaped cold air supply cavity 6. Through partial section, it clearly shows the delivery process and structural guarantee of cold air from the cavity to the air outlet. The cavity section of the C-shaped cold air supply cavity 6 is a standard "C" shape. The inner wall of the cavity is smooth without protrusions and burrs. This structural design can minimize the resistance during the cold air flow process, ensuring smooth airflow. One end of the cold air supply cavity 6 is seamlessly connected with the cold air cavity 4, and the other end is precisely connected with the cold air supply outlet 19. The opening size of the cold air supply outlet 19 completely matches the outlet size of the C-shaped cavity, forming a continuous and smooth air flow channel, avoiding air vortex and energy loss caused by size mismatch. The passenger compartment roof 2 serves as the bottom boundary of the cold air cavity 4. Its connection with the cold air cavity side plate is realized by C-shaped clamping slot profile 14, which ensures the sealing of the cold air cavity and effectively prevents cold air leakage during delivery. The edge of the cold air supply outlet 19 is fastened with the cold air cavity side plate by bolts evenly distributed along the edge of the air outlet, which not only guarantees the connection strength but also does not hinder the air output. Through the delivery path, structural guarantee and matching relationship of cold air from the cavity to the air outlet, the rationality of air flow organization and the efficiency of air supply are verified, providing key data support for the optimization of cold air supply cavity, the angle design of cold air supply outlet and the improvement of sealing structure.

[0043] Referring to Figure 6 The figure shows the installation structure, position relationship and functional association of the middle hanging ear 16 and the inspection door 20. In the cross-sectional view, the inspection door 20 is installed at the preset opening of the air duct top plate 8. The edge of the inspection door 20 is provided with a flange, which is precisely connected with the opening flange of the air duct top plate 8. A sealing gasket is arranged between the two connection surfaces to ensure the sealing of the air duct and prevent cold and warm air leakage. The inspection door 20 is connected with the opening flange of the air duct top plate 8 by evenly distributed bolts. The installation position of the bolts avoids the air flow channel, which not only guarantees the connection reliability but also does not affect the ventilation effect. The base of the middle hanging ear 16 closely fits the upper surface of the air duct top plate 8. The mounting hole on the base is precisely aligned with the pre-buried nut of the air duct top plate 8. The bolt passes through the mounting hole of the middle hanging ear 16 and is fastened with the pre-buried nut, realizing the reliable connection of the middle hanging ear with the vehicle body sliding groove. The installation position of the inspection door 20 completely corresponds to the assembly area of the middle hanging ear 16. When the middle hanging ear 16 needs to be disassembled, repaired or maintained, only the fixing bolts of the inspection door 20 need to be removed, and the connection node of the middle hanging ear 16 can be directly accessed without disassembling other parts of the air supply duct, greatly improving the convenience of repair. Through the functional positioning of the inspection door, the installation structure and the assembly process logic of the middle hanging ear, the convenience and rationality of the repair operation are verified, providing key basis for the size design of the inspection door, the installation sequence planning of the middle hanging ear and the optimization of the sealing structure.

[0044] Referring to Figure 7The figure clearly shows the technical effect of independent air supply in separate chambers. The cold air flow is marked by blue arrows, which enter from the inlet of the cold air chamber 4, evenly diffuse inside the "convex" chamber, and flow to the "C" shaped cold air supply chamber 6 on both sides of the main body of the air duct under the guidance of the vertical air duct partition 11 and the horizontal air duct partition 12, and then smoothly output to the guest room through the cold air supply port. The arrow direction is horizontally outward, which can cover the main area on both sides of the guest room and achieve uniform coverage of cold air. The warm air flow is marked by red arrows, which enter from the inlet of the warm air chamber 5, form a convergence effect inside the "double-port" chamber, and flow to the "long circle" shaped warm air supply port under the guidance of the horizontal air duct partition 12, and then output to the guest room in a directional manner. The arrow is distributed obliquely downward, which is complementary to the output direction of the cold air flow, ensuring that each area in the guest room can be uniformly temperature-regulated. As can be seen from the figure, the flow paths of cold and warm air flows do not cross and interfere with each other, and each maintains an independent delivery channel. The density of the airflow arrows is uniform, reflecting the stability of the air speed, and there is no obvious turbulent area. Through the air flow organization design scheme, the rationality, uniformity and efficiency of cold and warm air supply in separate chambers are verified, which provides an intuitive basis for further optimization of the chamber structure, adjustment of the air supply port angle and matching of the air flow speed, and ensures that the guest room air conditioning comfort meets the design requirements.

Claims

1. An integrated air supply duct for high-speed trains, characterized in that: It includes three core components: the main body of the air supply duct (1), the passenger room ceiling (2), and the passenger room lighting equipment (3). The main body of the air supply duct (1) is the core load-bearing and airflow conveying structure. The passenger room ceiling (2) is made of composite board and serves as both the bottom plate of the main body of the air supply duct (1) and the decorative ceiling of the passenger room. The passenger room lighting equipment (3) is integrated into the passenger room ceiling (2), forming an integrated structure of "air duct-ceiling-lighting". The interior of the main body of the air supply duct (1) is divided into independent cold air chambers (4) and warm air chambers (5) by partitions.

2. An integrated air supply duct for high-speed trains according to claim 1, characterized in that: The cold air cavity (4) has a convex shape and is enclosed by the air duct top plate (8), the cold air cavity side plate (10), the air duct vertical partition (11), the air duct horizontal partition (12) and the passenger room top plate (2) to form a closed cold air circulation cavity.

3. An integrated air supply duct for high-speed trains according to claim 1, characterized in that: The air supply duct body (1) is provided with cold air supply chambers (6) on both sides. The cold air chamber (4) is seamlessly connected to one end of the cold air supply chamber (6), and the other end of the cold air supply chamber (6) is connected to the cold air outlet (19).

4. An integrated air supply duct for high-speed trains according to claim 1, characterized in that: The cold air cavity side plate (10), the air duct partition (12), and the passenger room ceiling (2) are connected by C-shaped slot profiles (14), and the opening size of the C-shaped slot profiles (14) matches the edge thickness of the cold air cavity side plate (10), the air duct partition (12), and the passenger room ceiling (2).

5. An integrated air supply duct for high-speed trains according to claim 1, characterized in that: The warm air cavity (5) has a "double-mouth" structure. It is enclosed by the top plate (8), vertical partition (11), horizontal partition (12) and side plate (9) of the air duct to form a closed warm air circulation cavity. It is symmetrically distributed on both sides of the cold air cavity (4). The side plate (9) of the warm air cavity is connected to the warm air outlet (7).

6. An integrated air supply duct for high-speed trains according to claim 1, characterized in that: The top plate (8), vertical partition (11), and horizontal partition (12) of the air duct are connected and fixed by fixed angle iron.

7. An integrated air supply duct for high-speed trains according to claim 1, characterized in that: The passenger room lighting equipment (3) adopts an embedded design and is integrated into the preset mounting groove of the passenger room ceiling (2). The lighting fixture is flush with the surface of the passenger room ceiling. The lighting circuit is arranged through the gap between the passenger room ceiling (2) and the side plate (10) of the cold air cavity. The circuit channel is isolated from the airflow cavity.

8. An integrated air supply duct for high-speed trains according to claim 1, characterized in that: It also includes side lugs (15) on the side plate (10) of the cold air cavity and center lugs (16) on the top plate (8) of the air duct. The main body (1) of the air duct is connected to the vehicle body slide through the side lugs (15) and center lugs (16) to form a triangular support installation structure.

9. An integrated air supply duct for high-speed trains according to claim 1, characterized in that: An inspection door (20) is bolted to the top plate (8) of the air duct corresponding to the position of the middle lifting lug (16), and a sealing gasket is provided on the connection surface between the inspection door (20) and the top plate (8).

10. An integrated air supply duct for high-speed trains according to claim 1, characterized in that: The multi-section air supply duct body (1) is connected by an air duct flange (17), which is located at the end of the air supply duct and is integrally formed with the air supply duct body (1).

Images