阅读说明：本技术 轨道车辆供电系统 (Power supply system for railway vehicle ) 是由 方长胜 于 2018-06-28 设计创作，主要内容包括：本发明提出了一种轨道车辆供电系统,包括：地热发电装置,地热发电装置用于利用地热能发电；能量传输装置,能量传输装置与地热发电装置相连,能量传输装置用于将地热发电装置产生的电能传输至轨道上的导电轨以给轨道车辆供电,和/或,将地热发电装置产生的电能传输至沿轨道设置的充电站点,以在轨道车辆停靠在充电站点时,给轨道车辆充电。该轨道车辆供电系统,能够合理利用可再生清洁能源进行发电,以给轨道车辆进行独立供电,由此降低了轨道车辆供电的复杂性,且有利于环境保护。(The invention provides a rail vehicle power supply system, which comprises: the geothermal power generation device is used for generating power by utilizing geothermal energy; the energy transmission device is connected with the geothermal power generation device and used for transmitting the electric energy generated by the geothermal power generation device to a conductive rail on the track to supply power to the rail vehicle, and/or transmitting the electric energy generated by the geothermal power generation device to a charging station arranged along the track to charge the rail vehicle when the rail vehicle stops at the charging station. This rail vehicle power supply system can utilize the clean energy of regeneration rationally to generate electricity to independently supply power for rail vehicle, reduced the complexity of rail vehicle power supply from this, and be favorable to environmental protection.)

1. A rail vehicle power supply system, comprising:

a geothermal power generation device for generating electricity using geothermal energy;

the energy transmission device is connected with the geothermal power generation device and is used for transmitting the electric energy generated by the geothermal power generation device to a conductive rail on a track to supply power to a rail vehicle and/or transmitting the electric energy generated by the geothermal power generation device to a charging station arranged along the track to charge the rail vehicle when the rail vehicle stops at the charging station.

2. The rail vehicle power supply system of claim 1, further comprising:

the energy storage module is connected with the energy transmission device;

the energy transmission device is also used for transmitting the electric energy generated by the geothermal power generation device to the energy storage device for storage, and transmitting the electric energy stored by the energy storage device to the conducting rail or the charging station.

3. The rail vehicle power supply system of claim 1, wherein the geothermal power plant comprises:

the hot end temperature control module is arranged at a first depth from the ground surface and used for acquiring a first temperature of the first depth;

the cold end temperature control module is arranged at a second depth from the ground surface and used for acquiring a second temperature of the second depth, wherein the second depth is smaller than the first depth, and the second temperature is smaller than the first temperature;

and one end of the thermovoltaic module is connected with the hot end control module, the other end of the thermovoltaic module is connected with the cold end temperature control module, and the thermovoltaic module is used for generating power according to the difference value of the first temperature and the second temperature.

4. The rail vehicle power supply system of claim 3, wherein the geothermal power plant further comprises:

and the heat insulation layer is arranged around the hot end temperature control module and is used for insulating the hot end temperature control module.

5. The rail vehicle power supply system of claim 3, wherein the thermovoltaic module comprises a matrix of single crystal thermovoltaic chips.

6. The rail vehicle power supply system of claim 5, wherein the single crystal thermovoltaic chip matrix comprises a plurality of thermovoltaic chips, each thermovoltaic chip having a lower substrate with a first conductive strip and an upper substrate with a second conductive strip, wherein the first conductive strip is connected to the hot side temperature control module, the second conductive strip is connected to the cold side temperature control module, and the lower substrate and the upper substrate have openings.

7. Rail vehicle electrical supply system according to one of claims 3 to 6, characterized in that the energy transmission device comprises at least a wire.

8. The rail vehicle power supply system of claim 1, wherein the geothermal power plant comprises:

a heat exchanger disposed corresponding to a heat source;

a turbine having an inlet in communication with the heat exchanger through a first conduit;

a generator connected to the turbine;

when the geothermal source provides heat, the liquid medium stored in the heat exchanger is evaporated to generate steam and is led to the turbine through the first conduit so as to push the turbine to drive the generator to generate electricity.

9. The rail vehicle power supply system of claim 8, wherein the geothermal power plant further comprises:

a condenser in communication with the outlet of the turbine via a second conduit and in communication with the heat exchanger via a third conduit to condense unutilized steam to a liquid state and to direct to the heat exchanger via the third conduit.

10. Railway vehicle supply system according to claim 8 or 9, characterized in that the energy transmission means comprise at least a wire and an AC/DC converter.

Technical Field

The invention relates to the technical field of rail transit, in particular to a rail vehicle power supply system.

Background

At present, in a rail transit system, a power traction system of a rail vehicle is mostly ensured by means of a set of complex power supply system, is introduced by adopting a high-voltage cable and a transformer through an urban power grid or a power station, and then converts high-voltage electricity into direct current electricity used by rail transit through a series of electrified devices such as a medium-voltage cabinet, a rectifier transformer, a rectifier, a low-voltage cabinet, a direct-current switch cabinet and the like.

However, the above schemes of a series of electrical devices and power supply support systems involve many modules, many devices, a whole set of systems is huge, and the cost is high, and meanwhile, the system design scheme considers effective on-off of a whole circuit, timely discovery and solution of fault states and various protection functions of the circuit, so that the scheme has a long construction period, a wide design range, many and complicated contents needing calculation and checking, numerous participation in professions in scheme design, and a large specific construction difficulty coefficient.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the invention aims to provide a power supply system for a railway vehicle, which can be used for independently supplying power to the railway vehicle by reasonably utilizing renewable clean energy, reduces the complexity of power supply of the railway vehicle and is beneficial to environmental protection.

To achieve the above object, the present invention provides a rail vehicle power supply system, including: a geothermal power generation device for generating electricity using geothermal energy; the energy transmission device is connected with the geothermal power generation device and is used for transmitting the electric energy generated by the geothermal power generation device to a conductive rail on a track to supply power to a rail vehicle and/or transmitting the electric energy generated by the geothermal power generation device to a charging station arranged along the track to charge the rail vehicle when the rail vehicle stops at the charging station.

According to the rail vehicle power supply system provided by the embodiment of the invention, the geothermal power generation device is used for generating power by utilizing geothermal energy, and the energy transmission device is used for transmitting the electric energy generated by the geothermal power generation device to the conductive rail on the rail so as to supply power to the rail vehicle, and/or the electric energy generated by the geothermal power generation device is transmitted to the charging station arranged along the rail so as to charge the rail vehicle when the rail vehicle stops at the charging station. This rail vehicle power supply system can utilize the clean energy of regeneration rationally to generate electricity to independently supply power for rail vehicle, reduced the complexity of rail vehicle power supply from this, and be favorable to environmental protection.

In addition, the rail vehicle power supply system of the above embodiment of the present invention may further have the following additional technical features:

according to an embodiment of the invention, the rail vehicle power supply system further comprises: the energy storage module is connected with the energy transmission device; the energy transmission device is also used for transmitting the electric energy generated by the geothermal power generation device to the energy storage device for storage, and transmitting the electric energy stored by the energy storage device to the conducting rail or the charging station.

According to one embodiment of the invention, the geothermal power generation apparatus comprises: the hot end temperature control module is arranged at a first depth from the ground surface and used for acquiring a first temperature of the first depth; the cold end temperature control module is arranged at a second depth from the ground surface and used for acquiring a second temperature of the second depth, wherein the second depth is smaller than the first depth, and the second temperature is smaller than the first temperature; and one end of the thermovoltaic module is connected with the hot end control module, the other end of the thermovoltaic module is connected with the cold end temperature control module, and the thermovoltaic module is used for generating power according to the difference value of the first temperature and the second temperature.

According to one embodiment of the invention, the geothermal power generation apparatus further comprises: and the heat insulation layer is arranged around the hot end temperature control module and is used for insulating the hot end temperature control module.

According to one embodiment of the invention, the thermovoltaic module comprises a matrix of single crystal thermovoltaic chips.

According to an embodiment of the invention, the single-crystal thermovoltaic chip matrix comprises a plurality of thermovoltaic chips, a first conducting strip is arranged on a lower substrate of each thermovoltaic chip, a second conducting strip is arranged on an upper substrate, wherein the first conducting strip is connected with the hot end temperature control module, the second conducting strip is connected with the cold end temperature control module, and openings are formed in the lower substrate and the upper substrate.

According to one embodiment of the invention, the energy transmission means comprises at least a wire.

According to one embodiment of the invention, the geothermal power generation apparatus comprises: a heat exchanger disposed corresponding to a heat source; a turbine having an inlet in communication with the heat exchanger through a first conduit; a generator connected to the turbine; when the geothermal source provides heat, the liquid medium stored in the heat exchanger is evaporated to generate steam and is led to the turbine through the first conduit so as to push the turbine to drive the generator to generate electricity.

According to one embodiment of the invention, the geothermal power generation apparatus further comprises: a condenser in communication with the outlet of the turbine via a second conduit and in communication with the heat exchanger via a third conduit to condense unutilized steam to a liquid state and to direct to the heat exchanger via the third conduit.

According to one embodiment of the invention, the energy transmission device comprises at least a conductor and an AC/DC converter.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a block diagram of a rail vehicle power supply system according to one embodiment of the present invention;

FIG. 2 is a block diagram of a rail vehicle power supply system according to another embodiment of the present invention;

fig. 3 is a block diagram of a geothermal power generating apparatus according to a first embodiment of the invention;

fig. 4 is a block diagram of a geothermal power generating apparatus according to a second embodiment of the invention;

fig. 5 is a block diagram of a geothermal power generating apparatus according to a third embodiment of the invention;

fig. 6 is a block diagram of a geothermal power generating apparatus according to a fourth embodiment of the invention;

fig. 7 is a schematic structural diagram of a rail vehicle power supply system according to an embodiment of the invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The rail transit is independent of other road traffic, so that the rail transit has independent road right, and the outer layer of the crust has abundant continuous geothermal resources, so that the reserves are large and wide in distribution. Therefore, the invention provides a power supply system for a railway vehicle, which supplies power to a railway by using clean and pollution-free geothermal energy which has good stability and can be recycled.

A rail vehicle power supply system of an embodiment of the present invention is described below with reference to the drawings.

Fig. 1 is a block diagram of a rail vehicle power supply system according to an embodiment of the present invention.

As shown in fig. 1, the rail vehicle power supply system 100 includes: a geothermal power plant 110 and an energy transfer plant 120. The geothermal power generating apparatus 110 is used to generate electricity using geothermal energy. The energy transmission device 120 is connected to the geothermal power generating device 110, and the energy transmission device 120 is used for transmitting the electric energy generated by the geothermal power generating device 110 to a conductive rail on a track to supply power to a rail vehicle, and/or transmitting the electric energy generated by the geothermal power generating device 110 to a charging station arranged along the track to charge the rail vehicle when the rail vehicle stops at the charging station.

In particular, in order to avoid the influence of the utility grid on the power supply of the rail vehicle and simplify the power supply mode of the rail vehicle, an independent power supply system is developed for the rail vehicle, and the power supply system can independently supply power to the rail vehicle and is not influenced by the utility grid. Meanwhile, the power supply system adopts clean energy geothermal energy to generate power in consideration of the environmental protection problem.

Specifically, the geothermal power generating device 110 of the power supply system 100 generates power by using geothermal energy, and the generated power can be transmitted to the conductive rails of the track through a power transmission device 120 such as a cable to supply power to the rail vehicles on the conductive rails. The electrical energy can also be transmitted to a charging station via an electrical energy transmission device 120, such as a cable, in order to charge the rail vehicle when it is parked at the charging station.

In one embodiment, when the charging stations are arranged on the driving route of the rail vehicle, a plurality of charging stations can be arranged along the rail, and two adjacent charging stations can be separated by a preset distance so as to meet the charging requirements of the rail vehicle at different stations.

Specifically, each charging station may be provided with a charging device, such as a charging pile, to perform wired charging of the rail vehicle parked at the charging station; each charging station can also be provided with a wireless charging device so as to wirelessly charge the rail vehicle parked at the charging station. It should be noted that the charging device is not limited to a charging pile, and any other device capable of charging a rail vehicle is within the protection scope of the present invention.

The rail vehicle power supply system provided by the embodiment of the invention can realize power generation by utilizing geothermal energy and independently supply power to the rail vehicle, so that the influence of a municipal power grid is avoided, the power supply complexity is low, and the environmental protection is facilitated.

In one embodiment of the present invention, as shown in fig. 2, the rail vehicle power supply system 100 further includes an energy storage device 130, and the energy storage module 130 is connected to the energy transmission device 120.

In this embodiment, the energy transfer device 120 is also used to transfer the electrical energy generated by the geothermal power plant 110 to the energy storage device 130 for storage, and to transfer the electrical energy stored by the energy storage device 130 to a power rail or charging station.

Specifically, when the rail vehicle is not running, or when the electric energy generated by the geothermal power generation device 110 is not only sufficient for the rail vehicle to run but also has a margin, the electric energy generated by the geothermal power generation device 110 can be transmitted to the energy storage device 130 through the energy transmission device 120 for storage. When the electric energy generated by the geothermal power generation device 110 is not enough for the rail vehicle, the energy can be stored by the energy transmission device 120

The stored electrical energy of the device 130 is transferred to a conductor rail or charging station to assist in the power supply. Of course, the electric energy stored in the energy storage device 130 can also be transmitted to other power grids such as a utility grid for use according to the requirement.

In one embodiment of the present invention, as shown in FIG. 3, a geothermal power plant 110 comprises: a hot side temperature control module 111, a cold side temperature control module 112, and a thermovoltaic module 113.

The hot end temperature control module 111 is arranged at a first depth from the ground surface and used for acquiring a first temperature of the first depth. Cold end temperature control module 112 is disposed at a second depth from the surface of the earth for obtaining a second temperature at the second depth, wherein the second depth is less than the first depth and the second temperature is less than the first temperature. One end of the thermovoltaic module 113 is connected to the hot end control module 111, the other end of the thermovoltaic module 113 is connected to the cold end temperature control module 112, and the thermovoltaic module 113 is configured to generate power according to a difference between the first temperature and the second temperature and generate direct current. Wherein the thermovoltaic module 113 may be disposed at a third depth from the earth's surface, which may be less than the first depth and greater than the second depth.

Specifically, the values of the second depth and the first depth may be set according to actual conditions and needs, such as the output position of geothermal energy, the materials used by the geothermal power generation device 110, and the like.

In this embodiment, since both the charging station and the charging rail require dc power, and the thermovoltaic module 113 itself generates power to generate dc power, the energy transmission device 120 may only comprise a wire, such as a cable, to directly introduce dc power to the charging station and/or the charging rail. Certainly, in order to ensure the appropriate direct current introduced into the charging station and/or the charging rail and the stability of the introduced direct current, the electric energy transmission device 120 may further include a DC/DC converter, a filter, a voltage stabilizing module, and the like, and the specific connection manner and the operation principle thereof are not described herein again.

Optionally, the thermovoltaic module comprises a matrix of single crystal thermovoltaic chips. Specifically, the single crystal thermovoltaic chip matrix comprises a plurality of thermovoltaic chips, a first conducting strip is arranged on the lower substrate of each thermovoltaic chip, a second conducting strip is arranged on the upper substrate, the first conducting strips are connected with the hot end temperature control module, the second conducting strips are connected with the cold end temperature control module, and holes are formed in the lower substrate and the upper substrate.

Further, as shown in fig. 4, the geothermal power generation apparatus 110 further includes an insulating layer 114, where the insulating layer 114 is disposed around the hot-end temperature control module 111 and is used for insulating the hot-end temperature control module 111. Of course, insulation 114 may also be provided around the cold side temperature control module 112.

Therefore, the geothermal power generation device 110 shown in fig. 3 and 4 is adopted, the temperature difference of temperatures at different underground depths is utilized, and power is generated through the thermovoltaic module 113, so that geothermal energy is directly and efficiently converted into electric energy, the electric energy is introduced into the conductor rail and/or the charging station through the energy transmission device 120 so as to supply power or charge for the rail vehicle, and the geothermal power generation device 110 can realize the continuous supply of the electric energy for the rail vehicle and provide power.

It should be noted that the hot side temperature control module 111 may also be disposed at a place a where the surface temperature is higher, the cold side temperature control module 112 is disposed at a place B where the surface temperature is lower, and the temperature at A, B is stable, the high temperature at a is generated by the geothermal source, and at this time, the thermovoltaic module 113 is also disposed on the surface.

In addition, the load shown in fig. 3 and 4 at least includes the energy emitting device 120, and may further include the energy storage device 140, and other electric devices related to rail transit, such as platform lighting devices, alarm devices, and the like.

In another embodiment of the present invention, as shown in fig. 5, a geothermal power generating apparatus 110 includes: a heat exchanger 115, a turbine 116 and a generator 117.

Wherein, the heat exchanger 115 is disposed correspondingly to the heat source; the inlet of the turbine 116 communicates with the heat exchanger 115 through a first conduit a 1; the generator 117 is connected to the turbine 116. When the geothermal source provides heat, the liquid medium stored in the heat exchanger 115 is evaporated to generate steam and is led to the turbine 116 through the first conduit a1 to push the turbine 116 to drive the generator 117 to generate electricity. Wherein, the liquid medium is a low boiling point liquid medium and can be quickly vaporized to form steam at high temperature.

Specifically, the heat exchanger 115 may be disposed below the ground surface, connected to the turbine 116 disposed at the ground surface through the first conduit a1, and the driving wheel of the turbine 116 is connected to the driven wheel of the generator 117 through a crawler, wherein the generator 117 is also disposed at the ground surface. When the geothermal source provides heat, the liquid medium stored in the heat exchanger 115 is evaporated to generate steam, and the steam is transmitted to the air inlet of the turbine 116 through the first conduit a1 to push the driving wheel of the turbine 116 to rotate, so as to drive the driven wheel of the generator 117 to rotate, thereby generating electricity and generating alternating current.

In this embodiment, since the charging station and the charging rail both require DC power and the generator 117 generates AC power, the energy transmission device 120 includes a wire, such as a cable, and an AC/DC converter, to convert the AC power into DC power for introduction into the charging station and/or the charging rail. Certainly, in order to ensure the appropriate direct current introduced into the charging station and/or the charging rail and the stability of the introduced direct current, the electric energy transmission device 120 may further include a DC/DC converter, a filter, a voltage stabilizing module, and the like, and the specific connection manner and the operation principle thereof are not described herein again.

Further, as shown in fig. 6, the geothermal power generating apparatus 110 further includes a condenser 118 which communicates with the outlet of the turbine 116 through a second conduit a2 to condense the unutilized steam into a liquid state and is introduced to the heat exchanger 115 through a third conduit a 3.

Specifically, the condenser 118 is disposed on the ground surface and communicates with the outlet of the turbine 116 through the second conduit a2, so that the steam not used by the turbine 116 can be condensed into a liquid state and then introduced to the heat exchanger 115 through the third conduit a3 to achieve the reuse of the liquid medium.

For example, referring to fig. 7, when heat is provided from a geothermal source, the liquid medium stored in the heat exchanger 115 is evaporated to generate steam, i.e. hot fluid, which is transmitted to the air inlet of the turbine 116 to drive the driving wheel of the turbine 116 to rotate, and further drive the driven wheel of the generator 117 to rotate, so as to generate electricity and generate alternating current. Further, the alternating current is transmitted to an AC/DC converter arranged at each charging station through a lead, and the direct current is output through each AC/DC converter and transmitted to the corresponding charging pile through the lead. Optionally, the AC/DC converter may also be disposed in a substation, and one AC/DC converter may be disposed corresponding to each charging pile, or only one AC/DC converter may be disposed.

Thus, with the geothermal power plant 110 shown in fig. 5 and 6, thermal energy can be converted into mechanical energy by the turbine 116, mechanical energy can be converted into electrical energy by the generator 117, and then electricity can be introduced into the conductor rails of the track or the rail vehicle by cables. That is, the power supply system 100 converts geothermal energy into electric energy required by rail transit, and continuously provides electric energy for rail vehicles through abundant geothermal energy, thereby providing power.

In conclusion, compared with the related art, the rail vehicle power supply system disclosed by the embodiment of the invention reasonably utilizes renewable geothermal energy, is environment-friendly and pollution-free, optimizes the energy transmission process, realizes independent power supply of the rail vehicle, is not interfered by an urban power grid, and is beneficial to environmental protection.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.