Train-mounted ducted airflow coupled wind energy recovery power generation system and method

Abstract

The present application relates to the field of wind power generation technology, and discloses a ducted airflow coupling wind energy recovery power generation system and method based on a train, which comprises N ducted windmills connected in sequence through connecting assemblies; support assemblies corresponding to the ducted windmills; the support assemblies are used for supporting the ducted windmills and can realize rotation of the ducted windmills; energy storage devices corresponding to the ducted windmills, the energy storage devices being connected with generators in the ducted windmills through cables; and connecting assemblies comprising first fixing parts, connecting sections and second fixing parts; the first fixing parts are connected with outlet ends of the ducted windmills, the second fixing parts are connected with inlet ends of the ducted windmills, and the two ends of the connecting sections are detachably connected with the first fixing parts and the second fixing parts, respectively. The present application can realize train power generation by installing multiple ducted windmills in series on a train and enabling the ducted windmills to quickly turn around based on different driving directions.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power generation technology, in particular to a train-mounted ducted airflow coupling wind energy recovery power generation system and method. BACKGROUND

[0002] Ducted wind turbines are a common way of generating wind power. The ducted wind turbine includes a duct shell, a turbine fan is installed in the duct shell, and the ducted wind turbine utilizes the rotating turbine fan to extract kinetic energy from the fluid passing through it and generates electricity through the generator. The ducted wind turbine has the advantages of small footprint and flexible application.

[0003] In theory, outdoor areas with certain wind speed can use ducted wind turbines to generate electricity. Currently, the use scenarios of ducted wind turbines are usually fixed places with wind, such as high-altitude windy areas. Ducted wind turbines are rarely used for vehicle-mounted power generation. Currently, there is no technology to install ducted wind turbines on trains for power generation.

[0004] Currently, the train relies mainly on the pantograph for power supply. When the train stops at the platform, the pantograph charges the power storage device on the train using the power pile installed on the platform. This power supply method requires a large number of power piles.

[0005] In addition, when there are certain special circumstances that prevent the power pile on the platform from supplying power to the train, the train has no emergency power compensation. SUMMARY

[0006] The purpose of the present application is to provide a train-mounted ducted airflow coupling wind energy recovery power generation system and method. By installing multiple ducted wind turbines in series on the train, and enabling the ducted wind turbines to quickly turn around based on different driving directions, the ducted wind turbines can be used for train power generation.

[0007] The present application is achieved by the following technical solutions:

[0008] The train-mounted ducted airflow coupling wind energy recovery power generation system comprises:

[0009] N ducted wind turbines connected in series through connecting assemblies, N being a positive integer greater than or equal to 2;

[0010] A support assembly corresponding to each ducted wind turbine, the support assembly being used to support the ducted wind turbine and enable the ducted wind turbine to turn around, the support assembly comprising a base and at least two second support members, the second support members being used to support the ducted wind turbine and being slidably arranged on the base;

[0011] An energy storage device corresponding to each ducted wind turbine, the energy storage device being connected to the generator in the ducted wind turbine through a cable;

[0012] The connecting assembly comprises a first fixing part, a connecting section and a second fixing part; the first fixing part is connected with the outlet end of the ducted windmill, the second fixing part is connected with the inlet end of the ducted windmill, and the two ends of the connecting section are detachably connected with the first fixing part and the second fixing part respectively.

[0013] The authorized patent CN2025114879578 of the applicant discloses the structure of the ducted windmill, and the present application is the follow-up application of the ducted double-turbocharged windmill.

[0014] The wind energy circulation power generation of the present application refers to the wind flow entering the ducted windmill, and the wind flow is recycled from the previous section of the ducted windmill to the next section of the ducted windmill due to the series connection design of the ducted windmill.

[0015] The energy source of the ducted windmill of the present application includes the wind energy generated during the braking stage of the train, and the wind energy is converted into electrical energy by the ducted wind energy circulation power generation system of the present application and stored, which can be used as an emergency power supply during the operation of the train and can reduce the density of the station power piles to a certain extent. The ducted wind energy circulation power generation system of the present application is especially suitable for the plain driving route with a long braking distance.

[0016] On the one hand, the present application can make full use of wind energy by connecting multiple ducted windmills in series through a connecting assembly, and the wind flow of the outlet section of the previous section of the ducted windmill can directly enter the next section of the ducted windmill for utilization, thereby realizing the recycling of wind energy, effectively improving the wind energy utilization rate, and increasing the power generation capacity compared with that of a single section of the ducted windmill.

[0017] On the other hand, the connecting assembly of the present application is detachably connected with the ducted windmills at both ends, and through the support assembly, each section of the ducted windmill can be individually turned around and then connected in series, so that the train can generate power by utilizing wind energy in both directions during driving, avoiding the inability to generate wind power during the return trip.

[0018] In summary, the present application installs multiple ducted windmills in series on the train, and the ducted windmills can quickly turn around based on different driving directions, so that the ducted windmills can be used for generating power for the train.

[0019] In a preferred mode, wedge-shaped clamping grooves and axial through grooves are uniformly and axially arranged on the inner wall of the first fixing part, and the width of the wedge-shaped clamping grooves gradually increases from outside to inside.

[0020] The inner wall of the second fixing part is provided with a clamping groove in the axial direction;

[0021] The outer wall of one end of the connecting section is provided with a wedge-shaped fixing block in interference fit with the wedge-shaped clamping groove, and the maximum width of the wedge-shaped fixing block is smaller than the width of the axial through groove; the outer wall of the other end of the connecting section is provided with a strip-shaped fixing block matched with the clamping groove;

[0022] The connecting assembly further comprises a radial sealing assembly for realizing the sealing or conduction of the axial through groove, and the radial sealing assembly comprises a sealing body and a radial contraction assembly for realizing the radial displacement of the sealing body.

[0023] The connecting assembly designed in the application can not only realize the detachable connection with the two ends of the ducted fan, but also realize quick assembly and disassembly.

[0024] Specifically, the axial through groove is a through groove for inserting and removing the connecting assembly from the outlet end of the ducted fan, the wedge-shaped clamping groove realizes the detachable connection between the one end of the connecting assembly and the outlet end of the ducted fan through interference fit with the wedge-shaped fixing block, and the clamping groove and the strip-shaped fixing block realize the detachable connection between the other end of the connecting assembly and the inlet end of the ducted fan.

[0025] When the connecting assembly is used to connect or disassemble two ducted fans, only axial displacement and rotation of the connecting assembly relative to the ducted fan are needed, without the use of bolts and other operations, so that quick assembly and disassembly can be realized.

[0026] In a preferred mode, a realizable structure of the radial contraction assembly is as follows:

[0027] The adjusting ring and the guide ring are coaxially arranged outside the first connecting cylinder, and the slide rod is arranged therebetween.

[0028] The side of the adjusting ring away from the guide ring is in sliding connection with the first connecting cylinder, so as to realize the rotation of the adjusting ring around the axial direction thereof; the adjusting ring is provided with an adjusting groove; the adjusting groove is an arc-shaped groove as a whole and the two ends thereof are not in the same circumferential direction.

[0029] The guide ring is fixedly arranged outside the first connecting cylinder; the side opposite to the adjusting ring of the guide ring is provided with a limiting piece.

[0030] The slide rod is slidingly arranged in the limiting piece, and the sealing body is connected with the end of the slide rod; the slide rod is provided with a slide column slidingly arranged in the adjusting groove.

[0031] The rotation of the adjusting ring drives the slide rod to displace in the radial direction of the guide ring.

[0032] The outer wall of the first connecting cylinder is provided with a radial through groove in communication with the axial through groove, and the sealing body can be inserted into the radial through groove.

[0033] The radial contraction assembly guide ring of the structure has the effect of limiting the circumferential movement of the sliding rod, and the radial contraction assembly is used for driving the sliding rod to move radially by rotating the adjusting ring and using the adjusting groove structure when the adjusting ring rotates circumferentially, so as to realize the insertion or removal of the sealing body into or out of the axial through groove, when the sealing body is removed from the axial through groove, the axial through groove is guided to be open, and then the wedge-shaped fixing block moves in the axial through groove, and then the connecting assembly moves axially at the outlet end of the ducted fan; when the sealing body is inserted into the axial through groove, the axial through groove is axially sealed, and the airflow at the outlet end of the ducted fan is prevented from overflowing through the axial through groove.

[0034] The advantage of the structure is that the radial displacement of the multiple sealing bodies can be realized by rotating the adjusting ring, which is beneficial to saving time.

[0035] In a preferred mode, a structure of the radial contraction assembly can be realized as follows:

[0036] The radial contraction assembly comprises a sliding rod, the end of the sliding rod is connected with the sealing body, and the sliding rod is slidably arranged on the first fixed cylinder through a sliding piece.

[0037] The structure can realize the insertion or removal of the sealing body into or out of the axial through groove by directly operating the sliding rod to move radially, and has the advantages of simple structure, although the insertion or removal of multiple sealing bodies into or out of the axial through groove cannot be realized synchronously, but the operation is simple.

[0038] The present application lists two structures of the radial contraction assembly, wherein the radial contraction assembly containing the adjusting ring and the guide ring is suitable for the connecting assembly with relatively more wedge-shaped fixing blocks, when the number of the wedge-shaped fixing blocks on the outer wall of the connecting assembly is greater than or equal to 3, the radial contraction assembly containing the adjusting ring and the guide ring is preferably used; the other structure of the radial contraction assembly is suitable for the connecting assembly with relatively less wedge-shaped fixing blocks, for example, when the number of the wedge-shaped fixing blocks on the outer wall of the connecting assembly is 2 or 3, the latter is preferably used.

[0039] In a preferred mode, the diameter of the first fixed cylinder is greater than the diameter of the first connecting cylinder, and the inner diameter of the first connecting cylinder is smaller than the inner diameter of the outlet end of the ducted fan; an annular step is formed between the first fixed cylinder and the first connecting cylinder; the side of the adjusting ring away from the guide ring is slidably connected with the annular step through a sliding block; or the inner side wall of the adjusting ring is slidably connected with the outer wall of the first connecting cylinder through a sliding block.

[0040] In a preferred mode, the guide ring is connected with the first fixed cylinder through a connecting rod, the connecting rod is axially parallel to the first fixed cylinder, and an arc-shaped groove for penetrating the connecting rod is arranged on the adjusting ring; or the inside of the guide ring is fixed on the outer wall of the first connecting cylinder.

[0041] In a preferred mode, the slide rod and the sealing body are detachably connected. The sealing body can be replaced individually.

[0042] In a preferred mode, the limiting member is a guide cylinder or a guide groove.

[0043] In a preferred mode, the sealing body is always placed in the radial through groove within the radial movement range of the slide rod, and the outer wall of the sealing body is in close contact with the radial through groove.

[0044] In a preferred mode, the sealing body comprises a fixed frame and a flexible sealing member, one end of the fixed frame is connected with the slide rod, the other end is connected with the flexible sealing member, when the flexible sealing member is used to seal the axial through groove, the flexible sealing member realizes extrusion sealing in the width direction of the axial through groove; the fixed frame is in close contact with the radial through groove.

[0045] In a preferred mode, one end of the wedge-shaped clamping groove away from the outlet end of the ducted fan is a closed end, when the small end of the wedge-shaped fixing block is in contact with the closed end of the wedge-shaped clamping groove, the wedge-shaped fixing block and the wedge-shaped clamping groove realize interference fit.

[0046] After the wedge-shaped fixing block and the wedge-shaped clamping groove realize interference fit, when the ducted fan is in working state, the large end of the wedge-shaped fixing block is the windward surface, which is subjected to the pressure of the wind flow in the ducted fan, which is beneficial to improve the stability of the wedge-shaped fixing block clamped in the wedge-shaped clamping groove, and the leeward surface of the wedge-shaped clamping groove is a closed section, which is beneficial to improve the sealing performance of the wedge-shaped clamping groove.

[0047] In a preferred mode, the axial length of the wedge-shaped clamping groove is greater than the axial length of the wedge-shaped fixing block; which is more beneficial to the windward surface of the wedge-shaped fixing block subjected to the wind flow.

[0048] In a preferred mode, the wedge-shaped clamping groove and the axial through groove have the same depth, which is equal to the thickness of the wedge-shaped fixing block, which is more beneficial to the flow of the wind flow.

[0049] In a preferred mode, when the wedge-shaped clamping groove and the wedge-shaped fixing block realize interference fit connection, the strip-shaped fixing block and the bottom of the clamping groove have a spacing.

[0050] When the distance between the adjacent two ducted fans has a certain error, the distance between the adjacent two ducted fans can be different, and the strip-shaped fixing block is inserted into the clamping groove to different axial depths; that is, the strip-shaped fixing block and the bottom of the clamping groove have a spacing to adapt to the distance error between the adjacent two ducted fans, that is, the present application allows the distance between the adjacent two ducted fans to have a certain tolerance, which is more beneficial to realize the detachable connection of the ducted fan through the connecting assembly.

[0051] In a preferred mode, the first fixing part is used to connect the end of the ducted fan windmill with a conical surface structure adapted to the inlet end of the ducted fan windmill, facilitating the connection of the second fixing part with the inlet end of the ducted fan windmill.

[0052] In a preferred mode, the support assembly further comprises a first support part, which comprises a fixing column and a sliding support part.

[0053] The fixing column is fixedly connected with the base, and the sliding support part is slidingly connected with the fixing column, and the vertical displacement of the sliding support part is used to support the ducted fan windmill or disconnect the support; the first support part comprises a plug rod used to fix the sliding support part on the fixing column when the sliding support part is in a supporting state.

[0054] That is, the support assembly of the present application uses two modes to support the ducted fan windmill, and the design is based on the need of the ducted fan windmill to turn around.

[0055] Specifically, since the bottom of the second support part is slidingly connected with the base to realize the turning around of the ducted fan windmill by rotating the ducted fan windmill, the stability of the ducted fan windmill supported only by the second support part is relatively poor, and therefore, the present application further provides the first support part, the bottom of which is fixedly connected with the base, and the first support part and the second support part are used to jointly support the ducted fan windmill, and the stability is good.

[0056] Moreover, the first support part comprises the fixing column and the sliding support part, and the vertical displacement of the sliding support part on the fixing column is used to adjust whether the sliding support part has a supporting effect on the ducted fan windmill, and when it is needed to rotate the ducted fan windmill to make it turn around, the sliding support part is moved downward to make the top of the first support part not contact the ducted fan windmill and the height of the top of the first support part does not affect the rotation of the ducted fan windmill, and then the ducted fan windmill is operated to rotate and turn around.

[0057] That is, the support assembly of the present application comprises the first support part and the second support part, which can improve the support stability and do not affect the turning around operation of the ducted fan windmill.

[0058] In specific operation, the top of the second support part can be connected with the outer wall of the ducted fan windmill.

[0059] In a preferred mode, when two second support parts are provided in the working state, the first support part and the second support part are located on the same straight line, and the first support part is arranged outside the second support part.

[0060] The ducted fan windmill has a certain length, and the first support part and the second support part are arranged on the same straight line, which can improve the support stability.

[0061] In a preferred mode, the upper end surface of the base is provided with an annular sliding groove, the bottom of the second support is provided with a sliding block matched with the annular sliding groove, and the annular sliding groove is located below the middle part of the axial direction of the ducted windmill.

[0062] The above mode can realize the rotation of the ducted windmill through the support assembly, and the annular sliding groove is located below the middle part of the axial direction of the ducted windmill, so that the ducted windmill can smoothly pass through the connecting assembly after turning around, thereby avoiding the change of the distance between the adjacent two ducted windmills after turning around from affecting the connection after turning around.

[0063] In a preferred mode, the axial middle part of the ducted windmill is provided with a through hole for passing through the cable, a sealing element is arranged between the through hole and the cable, and the energy storage device is located below the through hole. Since the through hole is arranged in the axial middle part of the ducted windmill, the cable connecting the energy storage device and the generator is not affected when the ducted windmill turns around.

[0064] In a preferred mode, an electric energy storage device is further included, the electric energy storage device is connected with the energy storage device through a cable, and the electric energy storage device is connected with the power consumption end of the train through a cable.

[0065] The above electric energy storage device can be understood as an energy storage station, which can be used for power supply for the train and as an emergency power supply compensation during the running of the train.

[0066] The ducted airflow coupling wind energy recycling power generation system based on the train vehicle provided by the application can directly store the power generated by wind energy during the braking process of the train in the electric energy storage device, which is used for power supply compensation during the running and stopping of the train, and can reduce the density of the platform piles. The ducted airflow coupling wind energy recycling power generation system based on the train vehicle of the application is equivalent to a movable power generation system, which is used for power supply compensation for the train.

[0067] In a preferred mode, the outer wall of the connecting assembly is provided with a push plate, which is used as a stress point when the connecting assembly is disassembled, and the circumferential displacement of the connecting assembly can be realized by applying an axial force to the push plate, which is more conducive to the operation of quick assembly.

[0068] The use method of the above-mentioned ducted airflow coupling wind energy recycling power generation system based on the train vehicle includes the following steps:

[0069] S1, N ducted windmills are sequentially connected through the connecting assembly and installed on an independent carriage, the inlet end of the ducted windmill is located at the front end of the train running, and when the ducted windmill is in a working state, the inlet end of the ducted windmill is in communication with the outside space of the carriage.

[0070] S2, when the train travels to the end, needs to return to travel, adopts the connecting assembly to disconnect the two connected ducted windmills, then operates the support assembly to realize the turning of the ducted windmill; then sequentially connects N ducted windmills through the connecting assembly;

[0071] During the running of the train, the ducted windmill can convert the wind energy generated by braking into electric energy and store it in the energy storage device.

[0072] Specifically, in step S2, the specific process of realizing the turning of the ducted windmill is as follows:

[0073] S21, axial thrust is applied to the connecting assembly to move the wedge-shaped fixed block out of the wedge-shaped clamping groove, at this time, the strip-shaped fixed block moves out of the clamping groove;

[0074] S22, the ducted windmill is rotated to leave space for the connecting assembly to move out;

[0075] S23, rotate the connecting assembly until the wedge-shaped fixed block rotates to the position opposite to the axial through groove, then apply reverse axial thrust to the connecting assembly to move the connecting assembly out of the ducted windmill;

[0076] S24, rotate the ducted windmill to turn around, after turning around, apply axial thrust to the connecting assembly to move the wedge-shaped fixed block along the axial through groove, so that one end of the connecting assembly is inserted into the outlet section of the ducted windmill, then rotate the other ducted windmill to make it coaxial with the ducted windmill into which the connecting assembly is inserted;

[0077] S25, rotate the connecting assembly until the wedge-shaped fixed block rotates to the position corresponding to the wedge-shaped clamping groove, then apply reverse axial thrust to the connecting assembly to realize the interference fit connection of the wedge-shaped fixed block and the wedge-shaped clamping groove, at the same time, the strip-shaped fixed block is inserted into the clamping groove to realize the connection of the two ducted windmills.

[0078] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0079] 1, the present application realizes the series connection of multiple ducted windmills through the connecting assembly, and the connecting assembly is detachably connected to the ducted windmills at both ends, at the same time, based on realizing the turning of the ducted windmill, the present application reasonably designs the structure of the support assembly for supporting the ducted windmill, the support assembly of the present application not only can be used to support the ducted windmill but also can realize the turning of the ducted windmill, the present application not only realizes the improvement of wind energy utilization rate through the series connection of multiple ducted windmills, but also can realize the utilization of wind energy for power generation by multiple ducted windmills during the return driving process, thereby improving the power generation efficiency of the ducted windmill, the ducted airflow coupled wind energy recycling power generation system based on the train can be used as an emergency power supply compensation during the running of the train, and can reduce the density of the station power pile to a certain extent.

[0080] 2、The connecting assembly designed in the application only needs to realize the connection and disconnection of two sections of the ducted windmill by the axial displacement and rotation of the connecting assembly relative to the ducted windmill, can realize quick assembly and disassembly, can realize the turning and series connection of the ducted windmill in a limited time, and the radial sealing assembly for realizing the axial through slot sealing or conduction is designed based on the structure characteristics of the quick assembly and disassembly of the connecting assembly, the radial sealing assembly comprises a sealing body and a radial contraction assembly for realizing the radial displacement of the sealing body, so as to ensure the sealing property of the connection of two sections of the ducted windmill in the working state. BRIEF DESCRIPTION OF DRAWINGS

[0081] The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0082] Figure 1 It is a schematic diagram of the overall structure of the train-mounted ducted airflow coupling wind energy recovery power generation system of the application;

[0083] Figure 2 It is a schematic diagram of the structure of the ducted windmill in Embodiment 1 of the application;

[0084] Figure 3 It is a schematic diagram of the structure of the support assembly in Embodiment 1 of the application;

[0085] Figure 4 It is a schematic diagram of the structure of the base in Embodiment 1 of the application;

[0086] Figure 5 It is a schematic diagram of the connecting assembly for connecting two ducted windmills in Embodiment 1 of the application;

[0087] Figure 6 It is a schematic diagram of the connecting assembly connecting the second straight section in Embodiment 1 of the application;

[0088] Figure 7 It is a schematic diagram of the connection of the first connecting cylinder and the small-end connecting cylinder in Embodiment 1 of the application;

[0089] Figure 8 It is a schematic diagram of the structure of the first connecting cylinder in Embodiment 1 of the application;

[0090] Figure 9 It is a schematic diagram of the connection of the large-end connecting cylinder and the second connecting cylinder in Embodiment 1 of the application;

[0091] Figure 10 It is a schematic diagram of the structure of the guide ring in Embodiment 1 of the application;

[0092] Figure 11 It is a schematic diagram of the structure of the adjusting ring in Embodiment 1 of the application;

[0093] Figure 12 Figure 1 is a schematic view of the wedge-shaped fixed block fixed in the wedge-shaped clamping groove in Embodiment 1 of the present application.

[0094] Markings in the drawings and corresponding names of parts:

[0095] 1 - ducted windmill; 2 - connecting assembly; 3 - support assembly; 4 - energy storage device;

[0096] 11 - duct; 12 - rotating shaft; 13 - first-stage turbine; 14 - second-stage turbine; 15 - straight bevel gear; 16 - generator;

[0097] 111 - first converging section; 112 - first straight section; 113 - second converging section; 114 - second straight section;

[0098] 21 - first fixed part; 22 - radial sealing assembly; 23 - connecting section; 24 - second fixed part;

[0099] 211 - first fixed cylinder; 212 - first connecting cylinder; 221 - adjusting ring; 222 - guide ring; 223 - sliding rod; 224 - sealing body; 225 - connecting rod; 226 - sliding column; 231 - small-end connecting cylinder; 232 - variable-diameter connecting cylinder; 233 - large-end connecting cylinder; 234 - wedge-shaped fixed block; 235 - strip-shaped fixed block; 241 - second fixed cylinder; 242 - second connecting cylinder;

[0100] 2121 - wedge-shaped clamping groove; 2122 - axial through groove; 2123 - radial through groove; 2211 - adjusting groove; 2212 - arc-shaped groove; 2221 - limiting piece; 2421 - clamping groove;

[0101] 31 - base; 32 - first support piece; 33 - second support piece;

[0102] 311 - mounting hole; 312 - annular sliding groove; 321 - fixed column; 322 - sliding support piece; 331 - sliding block. DETAILED DESCRIPTION

[0103] In order to make the objectives, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with embodiments, the illustrative embodiments and the description thereof are only used to explain the present application, and do not limit the present application. The embodiments described below are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0104] In the following description, numerous specific details are set forth to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, materials, or methods are not specifically described to avoid obscuring the invention. Unless otherwise specified, the materials, instruments, and reagents used in the following embodiments are commercially available. Unless otherwise specified, the techniques used in the embodiments are conventional methods well known to those skilled in the art.

[0105] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0106] Example 1:

[0107] like Figures 1-12 As shown, a train-mounted ducted airflow coupled wind energy recovery and power generation system includes:

[0108] N ducted wind turbines 1 are sequentially connected by connecting component 2, where N is a positive integer greater than or equal to 2; wherein, the ducted wind turbine 1 is an existing structure, and this embodiment applies the existing ducted wind turbine 1 in series to train wind power generation. A specific structure of the ducted wind turbine 1 is as follows: Figure 2The illustrated; ducted windmill 1 includes a duct 11 and a blade rotating structure arranged in the duct 11. The duct 11 includes a first contraction section 111, a first straight section 112, a second contraction section 113 and a second straight section 114 in sequence along the wind flow direction, the first contraction section 111, the first straight section 112, the second contraction section 113 and the second straight section 114 have the same thickness; the diameter of the first straight section 112 is greater than that of the second straight section 114; the diameters of the first contraction section 111 and the second contraction section 113 gradually decrease from the front end to the rear end along the wind flow direction. The blade rotating structure includes a rotating shaft 12 and a first-stage turbine 13 and a second-stage turbine 14 arranged on the rotating shaft 12, the first-stage turbine 13 and the second-stage turbine 14 are respectively arranged in the first straight section 112 and the second straight section 114; the rotating shaft 12 is connected with a generator 16 through a straight bevel gear 15. When the wind flow enters the duct 11, the wind flow first enters the first-stage turbine 13 to be accelerated once, then enters the first straight section 112 to make the first-stage turbine 13 rotate, the rotation of the first-stage turbine 13 drives the rotating shaft 12 to rotate, the rotation of the rotating shaft 12 drives the second-stage turbine 14 to rotate, at the same time, the wind flow passes through the second contraction section 113 to be accelerated twice, then enters the second straight section 114 to make the second-stage turbine 14 rotate faster, that is, the second-stage turbine 14 rotates under the action of the rotating shaft 12 and the wind flow, the rotation of the first-stage turbine 13 and the second-stage turbine 14 accelerates the rotation of the rotating shaft 12, the wind energy in the duct is converted into mechanical energy as much as possible, and then the mechanical energy is converted into electrical energy through the generator 16.

[0109] The support assembly 3 corresponds to the ducted windmill 1 one by one; the support assembly 3 is used for supporting the ducted windmill 1 and can realize the rotation of the ducted windmill 1; the support assembly 3 includes a base 31 and at least two second support members 33, the second support member 33 is used for supporting the ducted windmill 1, and the second support member 33 is slidingly arranged on the base 31; the base 31 is provided with a mounting hole 311 for mounting the base 31 on the ground of the carriage. Specifically, the top of the second support member 33 is an arc-shaped support member matched with the outer wall of the duct 11, preferably, the arc-shaped support member is fixedly connected with the outer wall of the duct 11, and can be connected by bolts; the bottom of the second support member 33 is provided with a sliding block 331, and the upper end surface of the base 31 is provided with an annular sliding groove 312; the sliding block 331 is slidingly arranged in the annular sliding groove 312, and the annular sliding groove 312 is located below the middle part of the ducted windmill 1 in the axial direction, preferably, the center of the annular sliding groove 312 overlaps with the center of the duct 11 in the vertical direction; when two second support members 33 are arranged, the two second support members 33 are respectively located at two ends of the diameter direction of the annular sliding groove 312, and the diameter is located in the axial direction of the duct 11; when it is necessary to turn the ducted windmill 1 around, the ducted windmill 1 is directly forced to rotate, and when the two second support members 33 are interchanged, the turning of the ducted windmill 1 is completed.

[0110] The energy storage device 4 is connected with the generator 16 in the ducted windmill 1 through a cable. Preferably, an axial middle part of the ducted windmill 1 is provided with a through hole for passing through the cable, a sealing element is arranged between the through hole and the cable, and the energy storage device 4 is located below the through hole, and specifically, the energy storage device 4 can be installed inside the annular chute 312.

[0111] In a specific case, the train-mounted ducted airflow coupled wind energy recovery power generation system further comprises an electric energy storage device connected with the energy storage device 4 through a cable; and the electric energy storage device is connected with an electric terminal of the train through a cable.

[0112] The connecting assembly 2 comprises a first fixing part 21, a connecting section 23 and a second fixing part 24; the first fixing part 21 is connected with the outlet end of the ducted windmill 1, the second fixing part 24 is connected with the inlet end of the ducted windmill 1, and the two ends of the connecting section 23 are detachably connected with the first fixing part 21 and the second fixing part 24, respectively. The connecting section 23 comprises a small-end connecting cylinder 231 and a large-end connecting cylinder 233, and the small-end connecting cylinder 231 and the large-end connecting cylinder 233 are connected to form an integrated structure through a variable-diameter connecting cylinder 232.

[0113] In a specific case, the specific structure for realizing the detachable connection of the two ends of the connecting section 23 with the first fixing part 21 and the second fixing part 24, respectively, is as follows:

[0114] The first fixing part 21 comprises a first fixing cylinder 211 and a first connecting cylinder 212; the first fixing cylinder 211 is coaxially arranged outside the outlet end of the ducted windmill 1 through bolts, and the inner wall of the first fixing cylinder 211 is in contact with the outer wall of the outlet end of the second straight section 114; the inner wall of the first connecting cylinder 212 is uniformly and spacedly provided with wedge-shaped clamping grooves 2121 and axial through grooves 2122 along the axial direction thereof, both ends of the axial through grooves 2122 in the axial direction are open ends, the axial through grooves 2122 are in communication with the internal space of the first connecting cylinder 212, the wedge-shaped clamping grooves 2121 are in communication with the internal space of the first connecting cylinder 212, and at least one end of the wedge-shaped clamping grooves 2121 away from the end of the first connecting cylinder 212, i.e., the inner end, is an open end, i.e., the plurality of wedge-shaped clamping grooves 2121 provided on the inner wall of the first connecting cylinder 212 are uniformly arranged in the circumferential direction, and in a specific case, as shown in Figure 8 the inner wall of the first connecting cylinder 212 is respectively provided with three wedge-shaped clamping grooves 2121 and three axial through grooves 2122, one axial through groove 2122 is arranged between two adjacent wedge-shaped clamping grooves 2121, and the three wedge-shaped clamping grooves 2121 and the three axial through grooves 2122 are uniformly and spacedly arranged in the circumferential direction; as Figure 12As shown, the width of the wedge-shaped clamping groove 2121 gradually increases from the outside to the inside, that is, the width of the wedge-shaped clamping groove 2121 gradually increases from the outside of the first connecting cylinder 212 to the inside of the first connecting cylinder 212.

[0115] The second fixing part 24 comprises a second fixing cylinder 241 and a second connecting cylinder 242. The second fixing cylinder 241 is connected to the inlet end of the ducted windmill 1. Specifically, the second fixing cylinder 241 is a conical surface structure coaxially arranged outside the first contraction section 111 by bolts. The inner wall of the second connecting cylinder 242 is provided with a clamping groove 2421 along the axial direction. The axial outer end of the clamping groove 2421 is an open end. The clamping groove 2421 is in communication with the inner space of the second connecting cylinder 242.

[0116] The outer wall of the small-end connecting cylinder 231 is provided with a wedge-shaped fixing block 234 which is in interference fit with the wedge-shaped clamping groove 2121. That is, when the small-end connecting cylinder 231 moves outwardly in the outlet end of the second straight section 114, the wedge-shaped fixing block 234 and the wedge-shaped clamping groove 2121 can be in interference fit. Preferably, one end of the wedge-shaped clamping groove 2121 away from the outlet end of the ducted windmill 1 is a closed end. When the small end of the wedge-shaped fixing block 234 contacts the closed end of the wedge-shaped clamping groove 2121, the wedge-shaped fixing block 234 and the wedge-shaped clamping groove 2121 are in interference fit. The maximum width of the wedge-shaped fixing block 234 is smaller than the width of the axial through groove 2122. The outer wall of the large-end connecting cylinder 233 is provided with a strip-shaped fixing block 235 which is matched with the clamping groove 2421. When the connecting section 23 is axially displaced, the strip-shaped fixing block 235 can be inserted into the clamping groove 2421 from the axial open end of the clamping groove 2421. After insertion, there is no gap between the strip-shaped fixing block 235 and the axial side wall of the clamping groove 2421.

[0117] Preferably, the axial length of the wedge-shaped clamping groove 2121 is greater than the axial length of the wedge-shaped fixing block 234. The wedge-shaped clamping groove 2121 and the axial through groove 2122 have the same depth, which is equal to the thickness of the wedge-shaped fixing block 234.

[0118] After the wedge-shaped fixing block 234 and the wedge-shaped clamping groove 2121 are in interference fit, the internal space of the duct 11 is in communication with the outer wall through the axial through groove 2122 due to the axial through groove 2122, so that the sealed connection between the two ducts 11 cannot be achieved. Therefore, the connecting assembly 2 of the present embodiment further comprises a radial sealing assembly 22 for achieving the sealing or conduction of the axial through groove 2122. The radial sealing assembly 22 comprises a sealing body 224 and a radial contraction assembly for achieving the radial displacement of the sealing body 224.

[0119] Preferably, after the wedge-shaped clamping groove 2121 and the wedge-shaped fixing block 234 are in interference fit, the strip-shaped fixing block 235 and the bottom of the clamping groove 2421 have a spacing to allow the distance between the adjacent two ducts 11 to have a small range of tolerance.

[0120] The radial contraction assembly of the present embodiment can adopt any existing structure capable of achieving radial displacement of the sealing body 224. In the present embodiment, in order to accommodate the wedge-shaped fixed blocks 234 arranged on the outer wall of the small-end connecting cylinder 231, the number of the wedge-shaped fixed blocks 234 is greater than or equal to 3. In order to achieve synchronous operation of the radial displacement of the plurality of sealing bodies 224, as shown in FIGS. 1, 2 and 3, one of the optional structures of the radial contraction assembly includes an adjusting ring 221 and a guide ring 222 coaxially arranged outside the first connecting cylinder 212, and a slide rod 223. Figures 5-6 、 Figures 10-11 The adjusting ring 221 and the guide ring 222 are coaxially arranged outside the first connecting cylinder 212, and the slide rod 223 is arranged between the adjusting ring 221 and the guide ring 222.

[0121] The side of the adjusting ring 221 away from the guide ring 222 is in sliding connection with the first connecting cylinder 212 to achieve the rotation of the adjusting ring 221 about its axis. The adjusting ring 221 is provided with an adjusting groove 2211, which is an arc-shaped groove as a whole. One end of the adjusting groove 2211 is close to the inner side of the adjusting ring 221, and the other end is close to the outer side of the adjusting ring 221, i.e., the two ends of the adjusting groove 2211 are not on the same circumference. Specifically, the diameter of the first fixed cylinder 211 is greater than the diameter of the first connecting cylinder 212, and the inner diameter of the first connecting cylinder 212 is smaller than the inner diameter of the outlet end of the ducted windmill 1. An annular step is formed between the first fixed cylinder 211 and the first connecting cylinder 212. The side of the adjusting ring 221 away from the guide ring 222 is in sliding connection with the annular step by a sliding block. Specifically, an annular groove is arranged on the annular step, and the sliding block is slidingly arranged in the annular groove.

[0122] The guide ring 222 is fixedly arranged outside the first connecting cylinder 212. The side of the guide ring 222 opposite to the adjusting ring 221 is provided with a limiting piece 2221. The limiting piece 2221 is a guide cylinder or a guide groove.

[0123] In the present embodiment, one of the specific structures for fixing the guide ring 222 is that the guide ring 222 is connected with the first fixed cylinder 211 by a connecting rod 225, which is parallel to the axis of the first fixed cylinder 211. The adjusting ring 221 is provided with an arc-shaped groove 2212 for passing through the connecting rod 225. The arc-shaped groove 2212 is arranged to prevent the connecting rod 225 from affecting the rotation of the adjusting ring 221.

[0124] The slide rod 223 is slidingly arranged in the limiting piece 2221, and the sealing body 224 is connected with the end of the slide rod 223. The slide rod 223 is provided with a slide column 226, which is slidingly arranged in the adjusting groove 2211. The rotation of the adjusting ring 221 drives the slide rod 223 to displace in the radial direction of the guide ring 222.

[0125] The outer wall of the first connecting cylinder 212 is provided with a radial through groove 2123 in communication with the axial through groove 2122, and the sealing body 224 can be inserted into the radial through groove 2123; that is, the radial through groove 2123 penetrates the side wall of the first connecting cylinder 212 outside the axial through groove 2122 in the radial direction, and the length of the radial through groove 2123 in the axial direction is unlimited.

[0126] Preferably, the sliding rod 223 is detachably connected with the sealing body 224, facilitating replacement of the sealing body 224, and in a preferred case, the sealing body 224 comprises a fixed frame and a flexible sealing member, the fixed frame is connected with the sliding rod 223 at one end through a bolt, and connected with the flexible sealing member at the other end; the flexible sealing member can be silica gel or rubber, and can be directly clamped into the fixed frame to realize fixation of the flexible sealing member by using the deformation capacity of the flexible sealing member. When the flexible sealing member is used to seal the axial through groove 2122, the flexible sealing member is extruded in the circumferential width direction of the axial through groove 2122; the fixed frame is in close contact with the radial through groove 2123. Preferably, within the radial movement range of the sliding rod 223, the sealing body 224 is always placed in the radial through groove 2123, and the outer wall of the sealing body 224 is in close contact with the radial through groove 2123.

[0127] Preferably, the outer wall of the connecting assembly 2 is provided with a push plate serving as a stress point when the connecting assembly 2 is disassembled.

[0128] In the embodiment, the wind energy source of the ducted windmill 1 is the braking process of the train, that is, the embodiment can fully utilize the wind energy generated in the braking process of the train to generate electricity and store, and is used for auxiliary power supply of the train, can be used as an emergency power supply compensation, and can reduce the electric pile density of the power station.

[0129] The ducted wind energy recycling power generation system of the application is particularly suitable for a plain driving route with a long braking distance. For example, a plain route such as the Beijing-Kunming route.

[0130] Suppose that there are 10 train services per day on a train route, and the route contains 12 stations, then each train service brakes 24 times in total, and 10 train services brake 240 times in total, and the average braking distance is about 1 kilometer, so the total braking distance of the route is about 240 kilometers, and the electricity generated by utilizing the braking wind energy can be used for emergency power supply compensation and reducing the electric pile density of the power station.

[0131] The use method of the ducted airflow coupling wind energy recycling power generation system based on the train vehicle of the embodiment comprises the following steps:

[0132] S1, N number of windmills 1 are connected in sequence by connecting assembly 2 and installed on a separate carriage, the carriage is a closed structure, its overall appearance is no different from other carriages, but the carriage leaves a window at both ends that can expose the inlet end of the windmill 1, the window is matched with a switchable door; the inlet end of the windmill 1 is located at the front end of the train, when the windmill 1 is in working condition, that is, when the windmill 1 generates electricity using wind flow, the working condition of the windmill 1 in this embodiment is that when the train brakes, the inlet end of the door is opened to realize the communication between the inlet end of the windmill 1 and the outside space of the carriage, and the wind flow can be introduced into the windmill 1; the first fixing part 21 and the second fixing part 24 of the present embodiment are always fixed on the outer wall of the outlet end of the second straight section 114 and the outer wall of the first contraction section 111 respectively, so that the connection and disconnection of the adjacent two windmills 1 only need to operate the connecting assembly 2 and rotate the windmill 1.

[0133] S2, when the train reaches the terminal and needs to return, the two connected windmills 1 are disconnected by the connecting assembly 2, and then the windmill 1 is turned around by operating the supporting assembly 3; then N number of windmills 1 are connected in sequence by the connecting assembly 2;

[0134] During the running of the train, the windmill 1 converts wind energy into electrical energy and stores it in the energy storage device 4.

[0135] The specific process of turning around the windmill 1 is as follows:

[0136] S21, apply an axial thrust to the connecting assembly 2 to move the wedge-shaped fixing block 234 out of the wedge-shaped clamping groove 2121, at this time, the strip-shaped fixing block 235 moves out of the clamping groove 2421.

[0137] S22, rotate the windmill 1 to leave space for the connecting assembly 2 to move out;

[0138] S23, rotate the connecting assembly 2 until the wedge-shaped fixing block 234 is rotated to the opposite position of the axial through groove 2122, and then apply a reverse axial thrust to the connecting assembly 2 to move the connecting assembly 2 out of the windmill 1;

[0139] S24, rotate the windmill 1 to turn around, after turning around, apply an axial thrust to the connecting assembly 2 to move the wedge-shaped fixing block 234 along the axial through groove 2122, so that one end of the connecting assembly 2 is inserted into the outlet section of the windmill 1, and then rotate the other windmill 1 to make it coaxial with the windmill 1 into which the connecting assembly 2 is inserted;

[0140] S25, rotate the connecting assembly 2 until the wedge-shaped fixing block 234 is rotated to the position corresponding to the wedge-shaped clamping groove 2121, then apply an opposite axial thrust to the connecting assembly 2, realize the interference fit connection of the wedge-shaped fixing block 234 and the wedge-shaped clamping groove 2121, at the same time, the strip-shaped fixing block 235 is inserted into the clamping groove 2421, realizing the connection of the two ducted windmills 1.

[0141] In summary, the embodiment realizes the series connection of multiple ducted windmills 1 through the connecting assembly 2, and the connecting assembly 2 is detachably connected with the ducted windmills 1 at both ends. Through the design of the base 31, the ducted windmills 1 can rotate on the base 31. Through the rotatable support of the ducted windmills 1, the adjacent two ducted windmills 1 are detachably connected through the connecting assembly 2. The structure of the connecting assembly 2 is optimized to realize quick assembly and disassembly, and the ducted windmills 1 can be turned around during the train stop gap. That is, the embodiment not only realizes the improvement of wind energy utilization rate through the series connection of multiple ducted windmills 1, but also realizes the utilization of wind energy for power generation by multiple ducted windmills during the return driving process, thereby improving the power generation efficiency of the ducted windmills 1. The train-mounted ducted airflow coupling wind energy recovery power generation system based on the train-mounted ducted airflow coupling wind energy recovery power generation system can be used as an emergency power supply compensation during train operation, and can reduce the density of station piles to a certain extent.

[0142] Embodiment 2:

[0143] The difference between the embodiment and the embodiment 1 is that:

[0144] The specific structure of the radial contraction assembly is different. In the embodiment, the radial contraction assembly includes a sliding rod 223, the end of the sliding rod 223 is connected with a sealing body 224, and the sliding rod 223 is slidably arranged on the first fixed cylinder 211 through a sliding piece. When the annular step is formed between the first fixed cylinder 211 and the first connecting cylinder 212, the sliding rod 223 is slidably arranged on the annular step.

[0145] The embodiment needs to separately operate each sliding rod 223 to perform radial displacement, and is suitable for the case that the number of wedge-shaped fixing blocks 234 arranged on the outer wall of the small-end connecting cylinder 231 is less than or equal to 3. When the small-end connecting cylinder 231 is usually provided with two wedge-shaped fixing blocks 234, the radial contraction assembly of the embodiment is preferably adopted, which has the advantages of simple structure.

[0146] Embodiment 3:

[0147] The difference between the embodiment and the embodiment 1 is that:

[0148] In order to improve the structural stability of the support assembly, the support assembly 3 further comprises a first support 32, the first support 32 and the second support 33 jointly realize the support of the ducted windmill 1, the first support 32 comprises a fixed column 321 and a sliding support 322;

[0149] The fixed column 321 is fixedly connected with the base 31, the top of the sliding support 322 is an arc-shaped support plate matched with the outer wall of the duct 11, the lower part of the sliding support 322 is slidingly connected with the fixed column 321, and the vertical displacement of the sliding support 322 realizes the support of the ducted windmill 1 or the disconnection of the support; the first support 32 comprises a plug rod for realizing the fixation of the sliding support 322 on the fixed column 321 in the support state, a plug hole is arranged on the fixed column 321, a through hole corresponding to the plug hole is arranged on the sliding support 322, and the plug rod is inserted into the through hole and the plug hole to limit the vertical displacement of the sliding support 322 during the process of supporting the duct 11 by the first support 32.

[0150] Preferably, in the working state, when two second supports 33 are arranged, the first support 32 and the second support 33 are located on the same straight line, and the first support 32 is arranged outside the second support 33.

[0151] The working principle of the embodiment is as follows:

[0152] When the first support 32 is in the support state, the sliding support 322 is moved upward and fixed by the plug rod, when it is needed to disconnect the support to rotate the ducted windmill 1, the plug rod is taken out, the sliding support 322 is moved downward, and the top of the sliding support 322 is lower than the bottom of the ducted windmill 1, so as not to block the rotation of the ducted windmill 1; after the ducted windmill 1 turns around, the sliding support 322 is moved upward and fixed by the plug rod.

[0153] Embodiment 4:

[0154] The embodiment is based on embodiment 1, and the difference between the embodiment and embodiment 1 is as follows:

[0155] The connection modes of the adjusting ring 221 and the guide ring 222 with the first fixed part 21 are different, in the embodiment, the inner side wall of the adjusting ring 221 is slidingly connected with the outer wall of the first connecting cylinder 212 through a sliding block; the inner part of the guide ring 222 is fixed on the outer wall of the first connecting cylinder 212.

[0156] The specific embodiments described above further illustrate the purposes, technical solutions and beneficial effects of the present application, and it should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0157] It should be noted that the structures, proportions, sizes, etc. shown in the drawings accompanying the present specification are merely intended to facilitate the understanding of the content disclosed herein for those skilled in the art, and are not intended to limit the conditions under which the present application can be implemented, and therefore do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like used in the present specification are merely for the purpose of clear understanding of the description, and are not intended to limit the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

Claims

1. A train-car-based ducted airflow coupled wind energy recovery power generation system, characterized in that, The application relates to a wind power generation system. The system comprises: N ducted windmills (1) connected in sequence through a connecting assembly (2), wherein N is a positive integer greater than or equal to 2; a support assembly (3) corresponding to the ducted windmills (1); the support assembly (3) is used for supporting the ducted windmills (1) and enabling the ducted windmills (1) to rotate and turn around; the support assembly (3) comprises a base (31) and at least two second support members (33) used for supporting the ducted windmills (1) and slidingly arranged on the base (31); an energy storage device (4) corresponding to the ducted windmills (1); the energy storage device (4) is connected with a generator (16) in the ducted windmill (1) through a cable; the connecting assembly (2) comprises a first fixing part (21), a connecting section (23) and a second fixing part (24); the first fixing part (21) is connected with an outlet end of the ducted windmill (1), the second fixing part (24) is connected with an inlet end of the ducted windmill (1), and two ends of the connecting section (23) are detachably connected with the first fixing part (21) and the second fixing part (24) respectively; a wedge-shaped clamping groove (2121) and an axial through groove (2122) are uniformly arranged on the inner wall of the first fixing part (21) along the axial direction; the width of the wedge-shaped clamping groove (2121) gradually increases from the outside to the inside; an inner wall of the second fixing part (24) is provided with a clamping groove (2421) along the axial direction; an outer wall of one end of the connecting section (23) is provided with a wedge-shaped fixing block (234) which is in interference fit with the wedge-shaped clamping groove (2121), and the maximum width of the wedge-shaped fixing block (234) is smaller than the width of the axial through groove (2122); an outer wall of the other end of the connecting section (23) is provided with a strip-shaped fixing block (235) matched with the clamping groove (2421); the connecting assembly (2) further comprises a radial sealing assembly (22) used for realizing the sealing or conduction of the axial through groove (2122); the radial sealing assembly (22) comprises a sealing body (224) and a radial contraction assembly used for realizing the radial displacement of the sealing body (224); the radial contraction assembly comprises an adjusting ring (221), a guide ring (222) and a slide rod (223) coaxially arranged outside the first fixing part (21); the first fixing part (21) comprises a first fixing cylinder (211) and a first connecting cylinder (212); an adjusting groove (2211) is arranged on the adjusting ring (221); the adjusting groove (2211) is an arc-shaped groove as a whole and the two ends are not on the same circumferential direction; the guide ring (222) is fixedly arranged outside the first connecting cylinder (212); a limiting member (2221) is arranged on the side of the guide ring (222) opposite to the adjusting ring (221). The sliding rod (223) is slidingly arranged in the limiting member (2221), and the sealing body (224) is connected with the end of the sliding rod (223); the sliding rod (223) is provided with a sliding column (226) which is slidingly arranged in the adjusting groove (2211). The adjusting ring (221) is rotated to drive the sliding rod (223) to displace in the radial direction of the guide ring (222). The outer wall of the first connecting cylinder (212) is provided with a radial through groove (2123) which is communicated with the axial through groove (2122), and the sealing body (224) can be inserted into the radial through groove (2123). Or the radial contraction assembly comprises a sliding rod (223), the end of the sliding rod (223) is connected with the sealing body (224), and the sliding rod (223) is slidingly arranged on the first fixing cylinder (211) through a sliding member.

2. The train-car-based ducted airflow coupling wind energy recovery power generation system according to claim 1, wherein, The diameter of the first fixing cylinder (211) is greater than that of the first connecting cylinder (212), and the inner diameter of the first connecting cylinder (212) is smaller than that of the outlet end of the ducted windmill (1); an annular step is formed between the first fixing cylinder (211) and the first connecting cylinder (212); the side, away from the guide ring (222), of the adjusting ring (221) is slidingly connected with the annular step through a sliding block; or the inner side wall of the adjusting ring (221) is slidingly connected with the outer wall of the first connecting cylinder (212) through a sliding block.

3. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, The guide ring (222) is connected with the first fixing cylinder (211) through a connecting rod (225), the connecting rod (225) is parallel to the axial direction of the first fixing cylinder (211), and the adjusting ring (221) is provided with an arc-shaped groove (2212) for penetrating through the connecting rod (225); or the inside of the guide ring (222) is fixed to the outer wall of the first connecting cylinder (212).

4. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, The sliding rod (223) and the sealing body (224) are detachably connected.

5. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, The limiting member (2221) is a guide cylinder or a guide groove.

6. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, In the radial movement range of the sliding rod (223), the sealing body (224) is always arranged in the radial through groove (2123), and the outer wall of the sealing body (224) is in close contact with the radial through groove (2123).

7. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, The sealing body (224) comprises a fixed frame and a flexible sealing member, one end of the fixed frame is connected with the sliding rod (223), the other end is connected with the flexible sealing member, when the flexible sealing member is used for sealing the axial through groove (2122), the flexible sealing member realizes extrusion sealing in the width direction of the axial through groove (2122); and the fixed frame is in close contact with the radial through groove (2123).

8. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, One end of the wedge-shaped clamping groove (2121), away from the outlet end of the ducted windmill (1), is a closed end, when the small end of the wedge-shaped fixed block (234) is in contact with the closed end of the wedge-shaped clamping groove (2121), the wedge-shaped fixed block (234) realizes interference fit with the wedge-shaped clamping groove (2121).

9. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, The axial length of the wedge-shaped clamping groove (2121) is greater than the axial length of the wedge-shaped fixed block (234).

10. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, The wedge-shaped clamping groove (2121) and the axial through groove (2122) have the same depth, which is equal to the thickness of the wedge-shaped fixed block (234).

11. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, When the wedge-shaped clamping groove (2121) and the wedge-shaped fixed block (234) are connected in interference fit, the strip-shaped fixed block (235) has a spacing with the bottom of the clamping groove (2421).

12. The train-car-based ducted airflow coupling wind energy recovery power generation system according to any one of claims 1-11, characterized in that, The first fixed part (21) is used for connecting one end of the ducted windmill (1) to the tapered surface structure adapted to the inlet end of the ducted windmill (1).

13. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, The support assembly (3) further comprises a first support member (32), and the first support member (32) comprises a fixed column (321) and a sliding support member (322). The fixed column (321) is fixedly connected with the base (31), and the sliding support member (322) is slidingly connected with the fixed column (321), and the sliding support member (322) is used for supporting the ducted windmill (1) or disconnecting the support through the vertical displacement of the sliding support member (322); the first support member (32) comprises an insertion rod for fixing the sliding support member (322) on the fixed column (321) when the sliding support member (322) is in a supporting state.

14. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 13, wherein, When the two second support members (33) are provided in the working state, the first support member (32) and the second support member (33) are located on the same straight line, and the first support member (32) is arranged outside the second support member (33).

15. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, The upper end surface of the base (31) is provided with an annular sliding groove (312), and the bottom of the second support member (33) is provided with a sliding block (331) matched with the annular sliding groove (312), and the annular sliding groove (312) is located below the middle part of the axial direction of the ducted windmill (1).

16. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, The axial middle part of the ducted windmill (1) is provided with a through hole for passing through a cable, a sealing member is arranged between the through hole and the cable, and the energy storage device (4) is located below the through hole.

17. The train car-based, ducted airflow coupling, wind energy recovery, power generation system of claim 1, wherein, Further comprising an electric energy storage device, the electric energy storage device is connected with the energy storage device (4) through a cable; and the energy storage device is connected with the power consumption end of the train through a cable.

18. The train-car-based ducted airflow coupling wind energy recovery power generation system of claim 1, wherein, The outer wall of the connecting assembly (2) is provided with a push plate, which is used as a stress point when the connecting assembly (2) is disassembled.

19. The method of using a train car-based ducted airflow coupling wind energy recovery power generation system according to any one of claims 1-7, wherein, The method comprises the following steps: S1, sequentially connecting N ducted windmills (1) through the connecting assembly (2) and installing them on an independent carriage, the inlet end of the ducted windmill (1) is located at the front end of the train before driving, and when the ducted windmill (1) is in the working state, the inlet end of the ducted windmill (1) is in communication with the space outside the carriage; S2, when the train drives to the terminal and needs to drive back, disconnect the two connected ducted windmills (1) by using the connecting assembly (2), then operate the support assembly (3) to realize the turning of the ducted windmill (1); then sequentially connect N ducted windmills (1) through the connecting assembly (2). When the train is running, the ducted windmill (1) converts wind energy into electrical energy and stores it in the energy storage device (4).

20. The method of use of claim 19, wherein, In step S2, the specific process of turning around the ducted windmill (1) is as follows: S21, apply axial thrust to the connecting assembly (2) to move the wedge-shaped fixed block (234) out of the wedge-shaped clamping groove (2121), at this time, the strip-shaped fixed block (235) moves out of the clamping groove (2421); S22, rotate the ducted windmill (1) to leave space for the connecting assembly (2) to move out; S23, rotate the connecting assembly (2) until the wedge-shaped fixed block (234) is rotated to the opposite position of the axial through groove (2122), then apply reverse axial thrust to the connecting assembly (2) to move the connecting assembly (2) out of the ducted windmill (1); S24, rotate the ducted windmill (1) to turn around, after turning around, apply axial thrust to the connecting assembly (2) to move the wedge-shaped fixed block (234) along the axial through groove (2122), so that one end of the connecting assembly (2) is inserted into the outlet section of the ducted windmill (1), then rotate another ducted windmill (1) to make it coaxial with the ducted windmill (1) into which the connecting assembly (2) is inserted; S25, rotate the connecting assembly (2) until the wedge-shaped fixed block (234) is rotated to the corresponding position of the wedge-shaped clamping groove (2121), then apply reverse axial thrust to the connecting assembly (2) to realize the interference fit connection between the wedge-shaped fixed block (234) and the wedge-shaped clamping groove (2121), at the same time, the strip-shaped fixed block (235) is inserted into the clamping groove (2421), realizing the connection between the two ducted windmills (1).

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