CN110104010B - Vacuum pipeline high-speed magnetic levitation train heat exchange system - Google Patents
Vacuum pipeline high-speed magnetic levitation train heat exchange system Download PDFInfo
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- CN110104010B CN110104010B CN201910465512.8A CN201910465512A CN110104010B CN 110104010 B CN110104010 B CN 110104010B CN 201910465512 A CN201910465512 A CN 201910465512A CN 110104010 B CN110104010 B CN 110104010B
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- 238000005339 levitation Methods 0.000 title abstract description 12
- 239000011148 porous material Substances 0.000 claims abstract description 32
- 238000004378 air conditioning Methods 0.000 claims abstract description 30
- 230000017525 heat dissipation Effects 0.000 claims abstract description 27
- 230000006835 compression Effects 0.000 claims abstract description 25
- 238000007906 compression Methods 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000000725 suspension Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/0018—Air-conditioning means, i.e. combining at least two of the following ways of treating or supplying air, namely heating, cooling or ventilating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses a heat exchange system of a high-speed magnetic levitation train with a vacuum pipeline, and belongs to the technical field of high-speed magnetic levitation of vacuum pipelines. The device comprises a diversion side wall, an air compression pump, a first vortex tube bundle, a second vortex tube bundle, a four-way reversing valve, a first air channel, a second air channel, an air inlet flow equalizing pore plate and an air outlet flow equalizing pore plate; the first vortex tube bundle is used for converting compressed air into cold air and hot air, the obtained cold air or hot air enters an air-conditioning heat exchange machine room to cool a condenser or heat an evaporator, and the second vortex tube bundle is used for converting the compressed air into the hot air and the cold air, and the obtained cold air enters a power equipment room to strengthen heat dissipation of heat release equipment. The invention not only meets the heat dissipation requirement of the vacuum pipeline high-speed magnetic levitation train, but also can reduce the windage of the windward side of the train by actively compressing residual air, and meanwhile, the air pressure balance of the air outlet at the side of the train can be ensured, and the uneven aerodynamic force of the train in the running process is avoided.
Description
Technical Field
The invention belongs to the technical field of high-speed magnetic levitation of vacuum pipelines, and particularly relates to a heat exchange system of a high-speed magnetic levitation train with a vacuum pipeline.
Background
High-speed magnetic suspension of a vacuum pipeline is an emerging technology, is not applied to engineering, is in a state of technical development, and therefore, a plurality of technologies remain to be solved. In the running process of the existing high-speed magnetic levitation train, the cooling of the heating value of the train body and the heat exchange of a train environment maintaining system (mainly an air conditioning system) are realized through the convection heat exchange with the surrounding atmosphere. For the high-speed magnetic levitation train with the vacuum pipeline, the convection heat exchange effect is greatly reduced because the train runs in a near-vacuum environment, so that the heat exchange capacity of the train is reduced, and the driving safety is influenced.
Aiming at the current situation, the high-speed maglev train heat exchange system with the vacuum pipeline is provided, a heat exchange mechanism close to the normal pressure environment is obtained by designing a train body heat exchange system, a cold source is provided for heat dissipation of train power equipment, a cold source or a heat source is provided for refrigeration or heating of an air conditioning system, and driving safety is ensured.
Disclosure of Invention
The invention aims to provide a high-speed maglev train heat exchange system with a vacuum pipeline, which is characterized in that a ventilation path of a heating component passing through the interior of a train is designed, residual air in the vacuum pipeline is compressed through an air compression pump, compressed air is converted into cold air and hot air by using a vortex tube bundle, heat generated by the heating component is taken away through convection heat exchange, the surface temperature of the heating component is controlled within a safe range, or the hot air generated by the vortex tube bundle is utilized, and a heat source is provided for an air conditioning system of the train in winter.
According to the purpose of the invention, a vacuum pipeline maglev train heat exchange system is provided, wherein the heat exchange system is used for generating cold air required by heat dissipation of a train power device and heat dissipation of a condenser during air conditioning refrigeration by utilizing residual air in a vacuum pipeline, or is used for generating cold air required by heat dissipation of the train power device and hot air required by heat absorption of an evaporator during air conditioning refrigeration by utilizing the residual air in the vacuum pipeline; the vacuum pipeline is used for providing a near-vacuum running environment for the magnetic suspension train running on the track;
The heat exchange system comprises a diversion side wall, an air compression pump, a first vortex tube bundle, a second vortex tube bundle, a four-way reversing valve, a first air channel, a second air channel, an air inlet flow equalizing pore plate and an air exhaust flow equalizing pore plate;
The tail end of the flow guiding side wall is connected with an air compression pump, the flow guiding side wall is used for collecting residual air in the vacuum pipeline, and the air compression pump is used for compressing the air collected by the flow guiding side wall;
the first vortex tube bundle is used for converting compressed air input through a first vortex tube bundle valve into cold air and hot air, and the cold air and the hot air obtained by conversion of the first vortex tube bundle are respectively input into the first gas collecting tank and the second gas collecting tank; the second vortex tube bundle is used for converting compressed air input through a second vortex tube bundle valve into hot air and cold air, and the cold air and the hot air obtained by conversion of the second vortex tube bundle are respectively input into a third gas collecting tank and a fourth gas collecting tank;
The four-way reversing valve is connected with the first gas collecting box, the second gas collecting box, the first air channel and the first air outlet through air pipelines at the same time, and is used for controlling the discharge direction of the gas in the first gas collecting box and the second gas collecting box; the third gas collection box is connected with the second air channel through an air pipeline, and the fourth gas collection box is connected with the second exhaust port through an air pipeline; the air inlet flow equalizing pore plate is used for uniformly inputting the air in the first air channel into the air conditioner heat exchange machine room to cool the condenser or heat the evaporator, and uniformly inputting the cold air in the second air channel into the power equipment room to strengthen the heat dissipation of the heat release equipment; the exhaust flow equalizing pore plate is used for exhausting gas between the air conditioner heat exchange machine room and the power equipment through the third exhaust port.
Preferably, the air conditioner heat exchange system further comprises a first temperature sensor, wherein the first temperature sensor is positioned in the air conditioner heat exchange machine room and used for measuring the air temperature of the air conditioner heat exchange machine room, and the opening of the first vortex tube bundle valve is controlled by the air temperature of the air conditioner heat exchange machine room.
Preferably, the system further comprises a second temperature sensor, wherein the second temperature sensor is positioned in the power equipment room and used for measuring the air temperature between the power equipment room, and the opening degree of the second vortex tube bundle valve is controlled by the air temperature between the power equipment room.
Preferably, the air compressor further comprises a pressure sensor, a fourth exhaust port and an exhaust valve, wherein the pressure sensor is positioned in a cavity for collecting compressed air output by the air compressor pump and is used for measuring the air pressure in the cavity; the fourth exhaust port is positioned on the inner wall of the chamber, the exhaust valve is used for controlling the opening of the fourth exhaust port, and the opening of the exhaust valve is controlled by the air pressure in the chamber.
Preferably, the fourth exhaust ports are symmetrically distributed on two sides of the chamber.
Preferably, the first exhaust port and the second exhaust port are symmetrically distributed.
Preferably, the third exhaust port is symmetrically located on the cone tail.
Preferably, the first vortex tube bundle and the second vortex tube bundle are respectively formed by arranging 10-30 vortex tubes in parallel.
In general, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:
(1) The invention relates to a vacuum pipeline high-speed maglev train heat exchange system, which is characterized in that cold air generated by a first vortex tube bundle and a second vortex tube bundle is respectively used for cooling heat release equipment between a condenser and power equipment in an air conditioner heat exchange machine room in summer; hot air generated by the first vortex tube bundle and the second vortex tube bundle is discharged into the vacuum pipeline through the first exhaust port and the second exhaust port respectively; when in winter, the hot air generated by the first vortex tube bundle enters the air conditioner heat exchange machine room through the conversion four-way reversing valve to heat the evaporator in the machine room so as to heat the train, the cold air generated by the first vortex tube bundle is discharged into the vacuum pipeline, and the working condition of the second vortex tube bundle is the same as that of the second vortex tube bundle in summer in winter.
(2) The invention not only meets the heat dissipation requirement of the vacuum pipeline high-speed magnetic levitation train, but also can reduce the windage of the windward side of the train by actively compressing residual air, and simultaneously, the air pressure balance of the side of the train and the air outlet of the tail wing can be ensured, and the uneven aerodynamic force in the running process of the train is avoided.
(3) According to the high-speed magnetic levitation train heat exchange system with the vacuum pipeline, the cold air (hot air) generating and transmitting channels are arranged on the train body, reasonable pressure control values of all areas are arranged, so that the full cooling of all heating components of the train body is finally ensured, meanwhile, exhaust air can form good wake flow at the tail part of the train, and no extra resistance is generated on a driving tail wing.
(4) The cold air or the hot air generated by the vortex tube is transmitted in the air pipeline, and the power required by the convection heat exchange of the power equipment room and the air conditioner heat exchange room is provided by the pressure difference between the cold air and the vacuum pipeline, so that no additional power is required.
(5) The flow equalizing pore plate of the heat exchange system is used for equalizing and reducing pressure of the transmission air flow, meets the design parameter requirements of heat exchange of a power equipment room and an air-conditioning heat exchange room, and reduces the interference of air discharged from a vehicle body to a vacuum pipeline on the running stability of a train.
Drawings
FIG. 1 is a schematic diagram of a heat exchange system of a vacuum pipeline high-speed maglev train of the present invention.
Fig. 2 is a side view of a vacuum conduit high speed maglev train heat exchange system of the present invention.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein: the device comprises a 1-diversion side wall, a 2-air compression pump, a 3-first vortex tube bundle, a 4-second vortex tube bundle, a 5-four-way reversing valve, a 6-first air channel, a 7-second air channel, an 8-air inlet flow equalizing pore plate, a 9-exhaust flow equalizing pore plate, a 10-first vortex tube bundle valve, a 11-first gas collecting box, a 12-second gas collecting box, a 13-second vortex tube bundle valve, a 14-third gas collecting box, a 15-fourth gas collecting box, a 16-first exhaust port, a 17-second exhaust port, a 18-third exhaust port, a 19-first temperature sensor, a 20-second temperature sensor, a 21-pressure sensor, a 22-fourth exhaust port, a 23-exhaust valve and a 24-conical tail fin.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to fig. 2 and the embodiment. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
The heat exchange system is used for generating cold air required by heat dissipation of a condenser when the train power equipment dissipates heat and air conditioning cools by utilizing the air remained in the vacuum pipeline, or generating cold air required by heat dissipation of the train power equipment and hot air required by heat absorption of an evaporator when the air conditioning cools by utilizing the air remained in the vacuum pipeline; the vacuum pipeline is used for providing a near-vacuum running environment for the magnetic suspension train running on the track;
The heat exchange system comprises a diversion side wall 1, an air compression pump 2, a first vortex tube bundle 3, a second vortex tube bundle 4, a four-way reversing valve 5, a first air channel 6, a second air channel 7, an air inlet flow equalizing pore plate 8 and an air outlet flow equalizing pore plate 9;
the tail end of the flow guiding side wall 1 is connected with an air compression pump 2, the flow guiding side wall 1 is used for collecting residual air in a vacuum pipeline, and the air compression pump 2 is used for compressing the air collected by the flow guiding side wall 1;
The first vortex tube bundle 3 is used for converting compressed air input through the first vortex tube bundle valve 10 into cold air and hot air, and the cold air and the hot air obtained by conversion of the first vortex tube bundle 3 are respectively input into the first gas collecting tank 11 and the second gas collecting tank 12; the second vortex tube bundle 4 is used for converting compressed air input through the second vortex tube bundle valve 13 into hot air and cold air, and the cold air and the hot air obtained by conversion of the second vortex tube bundle 4 are respectively input into the third gas collecting tank 14 and the fourth gas collecting tank 15;
The four-way reversing valve 5 is connected with the first gas collecting tank 11, the second gas collecting tank 12, the first air channel 6 and the first air outlet 16 through air pipelines at the same time, and the four-way reversing valve 5 is used for controlling the discharge direction of the gas in the first gas collecting tank 11 and the second gas collecting tank 12; the third gas collecting tank 14 is connected with the second air channel 7 through an air pipeline, and the fourth gas collecting tank 15 is connected with the second exhaust port 17 through an air pipeline; the air inlet flow equalizing pore plate 8 is used for uniformly inputting the air in the first air channel 6 into an air conditioner heat exchange machine room to cool a condenser or heat an evaporator, and uniformly inputting the cold air in the second air channel 7 into a power equipment room to strengthen the heat dissipation of heat release equipment; the exhaust flow equalizing pore plate 9 is used for exhausting gas between the air conditioner heat exchange machine room and the power equipment through the third exhaust port 18.
Example 2
The heat exchange system is used for generating cold air required by heat dissipation of a condenser when the train power equipment dissipates heat and air conditioning cools by utilizing the air remained in the vacuum pipeline, or generating cold air required by heat dissipation of the train power equipment and hot air required by heat absorption of an evaporator when the air conditioning cools by utilizing the air remained in the vacuum pipeline; the vacuum pipeline is used for providing a near-vacuum running environment for the magnetic suspension train running on the track;
The heat exchange system comprises a diversion side wall 1, an air compression pump 2, a first vortex tube bundle 3, a second vortex tube bundle 4, a four-way reversing valve 5, a first air channel 6, a second air channel 7, an air inlet flow equalizing pore plate 8 and an air outlet flow equalizing pore plate 9;
the tail end of the flow guiding side wall 1 is connected with an air compression pump 2, the flow guiding side wall 1 is used for collecting residual air in a vacuum pipeline, and the air compression pump 2 is used for compressing the air collected by the flow guiding side wall 1;
The first vortex tube bundle 3 is used for converting compressed air input through the first vortex tube bundle valve 10 into cold air and hot air, and the cold air and the hot air obtained by conversion of the first vortex tube bundle 3 are respectively input into the first gas collecting tank 11 and the second gas collecting tank 12; the second vortex tube bundle 4 is used for converting compressed air input through the second vortex tube bundle valve 13 into hot air and cold air, and the cold air and the hot air obtained by conversion of the second vortex tube bundle 4 are respectively input into the third gas collecting tank 14 and the fourth gas collecting tank 15;
The four-way reversing valve 5 is connected with the first gas collecting tank 11, the second gas collecting tank 12, the first air channel 6 and the first air outlet 16 through air pipelines at the same time, and the four-way reversing valve 5 is used for controlling the discharge direction of the gas in the first gas collecting tank 11 and the second gas collecting tank 12; the third gas collecting tank 14 is connected with the second air channel 7 through an air pipeline, and the fourth gas collecting tank 15 is connected with the second exhaust port 17 through an air pipeline; the air inlet flow equalizing pore plate 8 is used for uniformly inputting the air in the first air channel 6 into an air conditioner heat exchange machine room to cool a condenser or heat an evaporator, and uniformly inputting the cold air in the second air channel 7 into a power equipment room to strengthen the heat dissipation of heat release equipment; the exhaust flow equalizing pore plate 9 is used for exhausting gas between the air conditioner heat exchange machine room and the power equipment through the third exhaust port 18.
The invention further comprises a first temperature sensor 19, wherein the first temperature sensor 19 is positioned in the air-conditioning heat exchange machine room and is used for measuring the air temperature of the air-conditioning heat exchange machine room, and the opening of the first vortex tube bundle valve 10 is controlled by the air temperature of the air-conditioning heat exchange machine room.
The invention further comprises a second temperature sensor 20, wherein the second temperature sensor 20 is positioned in the power equipment room and is used for measuring the air temperature between the power equipment room, and the opening degree of the second vortex tube bundle valve 13 is controlled by the air temperature between the power equipment room.
Example 3
The heat exchange system is used for generating cold air required by heat dissipation of a condenser when the train power equipment dissipates heat and air conditioning cools by utilizing the air remained in the vacuum pipeline, or generating cold air required by heat dissipation of the train power equipment and hot air required by heat absorption of an evaporator when the air conditioning cools by utilizing the air remained in the vacuum pipeline; the vacuum pipeline is used for providing a near-vacuum running environment for the magnetic suspension train running on the track;
The heat exchange system comprises a diversion side wall 1, an air compression pump 2, a first vortex tube bundle 3, a second vortex tube bundle 4, a four-way reversing valve 5, a first air channel 6, a second air channel 7, an air inlet flow equalizing pore plate 8 and an air outlet flow equalizing pore plate 9;
the tail end of the flow guiding side wall 1 is connected with an air compression pump 2, the flow guiding side wall 1 is used for collecting residual air in a vacuum pipeline, and the air compression pump 2 is used for compressing the air collected by the flow guiding side wall 1;
The first vortex tube bundle 3 is used for converting compressed air input through the first vortex tube bundle valve 10 into cold air and hot air, and the cold air and the hot air obtained by conversion of the first vortex tube bundle 3 are respectively input into the first gas collecting tank 11 and the second gas collecting tank 12; the second vortex tube bundle 4 is used for converting compressed air input through the second vortex tube bundle valve 13 into hot air and cold air, and the cold air and the hot air obtained by conversion of the second vortex tube bundle 4 are respectively input into the third gas collecting tank 14 and the fourth gas collecting tank 15;
The four-way reversing valve 5 is connected with the first gas collecting tank 11, the second gas collecting tank 12, the first air channel 6 and the first air outlet 16 through air pipelines at the same time, and the four-way reversing valve 5 is used for controlling the discharge direction of the gas in the first gas collecting tank 11 and the second gas collecting tank 12; the third gas collecting tank 14 is connected with the second air channel 7 through an air pipeline, and the fourth gas collecting tank 15 is connected with the second exhaust port 17 through an air pipeline; the air inlet flow equalizing pore plate 8 is used for uniformly inputting the air in the first air channel 6 into an air conditioner heat exchange machine room to cool a condenser or heat an evaporator, and uniformly inputting the cold air in the second air channel 7 into a power equipment room to strengthen the heat dissipation of heat release equipment; the exhaust flow equalizing pore plate 9 is used for exhausting gas between the air conditioner heat exchange machine room and the power equipment through the third exhaust port 18.
The invention further comprises a first temperature sensor 19, wherein the first temperature sensor 19 is positioned in the air-conditioning heat exchange machine room and is used for measuring the air temperature of the air-conditioning heat exchange machine room, and the opening of the first vortex tube bundle valve 10 is controlled by the air temperature of the air-conditioning heat exchange machine room.
The invention further comprises a second temperature sensor 20, wherein the second temperature sensor 20 is positioned in the power equipment room and is used for measuring the air temperature between the power equipment room, and the opening degree of the second vortex tube bundle valve 13 is controlled by the air temperature between the power equipment room.
The invention further comprises a pressure sensor 21, a fourth exhaust port 22 and an exhaust valve 23, wherein the pressure sensor 21 is positioned in a cavity for collecting compressed air output by the air compression pump 2 and is used for measuring the air pressure in the cavity; the fourth exhaust port 22 is located on the inner wall of the chamber, the exhaust valve 23 is used for controlling the opening of the fourth exhaust port 22, and the opening of the exhaust valve 23 is controlled by the air pressure in the chamber.
Example 4
The heat exchange system is used for generating cold air required by heat dissipation of a condenser when the train power equipment dissipates heat and air conditioning cools by utilizing the air remained in the vacuum pipeline, or generating cold air required by heat dissipation of the train power equipment and hot air required by heat absorption of an evaporator when the air conditioning cools by utilizing the air remained in the vacuum pipeline; the vacuum pipeline is used for providing a near-vacuum running environment for the magnetic suspension train running on the track;
The heat exchange system comprises a diversion side wall 1, an air compression pump 2, a first vortex tube bundle 3, a second vortex tube bundle 4, a four-way reversing valve 5, a first air channel 6, a second air channel 7, an air inlet flow equalizing pore plate 8 and an air outlet flow equalizing pore plate 9;
the tail end of the flow guiding side wall 1 is connected with an air compression pump 2, the flow guiding side wall 1 is used for collecting residual air in a vacuum pipeline, and the air compression pump 2 is used for compressing the air collected by the flow guiding side wall 1;
The first vortex tube bundle 3 is used for converting compressed air input through the first vortex tube bundle valve 10 into cold air and hot air, and the cold air and the hot air obtained by conversion of the first vortex tube bundle 3 are respectively input into the first gas collecting tank 11 and the second gas collecting tank 12; the second vortex tube bundle 4 is used for converting compressed air input through the second vortex tube bundle valve 13 into hot air and cold air, and the cold air and the hot air obtained by conversion of the second vortex tube bundle 4 are respectively input into the third gas collecting tank 14 and the fourth gas collecting tank 15;
The four-way reversing valve 5 is connected with the first gas collecting tank 11, the second gas collecting tank 12, the first air channel 6 and the first air outlet 16 through air pipelines at the same time, and the four-way reversing valve 5 is used for controlling the discharge direction of the gas in the first gas collecting tank 11 and the second gas collecting tank 12; the third gas collecting tank 14 is connected with the second air channel 7 through an air pipeline, and the fourth gas collecting tank 15 is connected with the second exhaust port 17 through an air pipeline; the air inlet flow equalizing pore plate 8 is used for uniformly inputting the air in the first air channel 6 into an air conditioner heat exchange machine room to cool a condenser or heat an evaporator, and uniformly inputting the cold air in the second air channel 7 into a power equipment room to strengthen the heat dissipation of heat release equipment; the exhaust flow equalizing pore plate 9 is used for exhausting gas between the air conditioner heat exchange machine room and the power equipment through the third exhaust port 18.
The invention further comprises a first temperature sensor 19, wherein the first temperature sensor 19 is positioned in the air-conditioning heat exchange machine room and is used for measuring the air temperature of the air-conditioning heat exchange machine room, and the opening of the first vortex tube bundle valve 10 is controlled by the air temperature of the air-conditioning heat exchange machine room.
The invention further comprises a second temperature sensor 20, wherein the second temperature sensor 20 is positioned in the power equipment room and is used for measuring the air temperature between the power equipment room, and the opening degree of the second vortex tube bundle valve 13 is controlled by the air temperature between the power equipment room.
The invention further comprises a pressure sensor 21, a fourth exhaust port 22 and an exhaust valve 23, wherein the pressure sensor 21 is positioned in a cavity for collecting compressed air output by the air compression pump 2 and is used for measuring the air pressure in the cavity; the fourth exhaust port 22 is located on the inner wall of the chamber, the exhaust valve 23 is used for controlling the opening of the fourth exhaust port 22, and the opening of the exhaust valve 23 is controlled by the air pressure in the chamber.
The fourth exhaust ports 22 are symmetrically distributed on both sides of the chamber, and the first exhaust ports 16 and the second exhaust ports 17 are symmetrically distributed. The air pressure balance is ensured, and uneven aerodynamic force in the train running process is avoided.
The invention also includes a cone tail 24, and the third exhaust ports 18 are symmetrically located on the cone tail 24, so that exhaust air can flow well at the tail of the train without generating additional resistance to the running tail.
The first vortex tube bundle 3 and the second vortex tube bundle 4 are respectively formed by arranging 10 vortex tubes in parallel.
Example 5
The front end of the conventional magnetic levitation train adopts streamline bullet head modeling design, and aims to optimize aerodynamic performance of the head of the train, reduce air resistance, pressure waves, noise and the like, and improve running speed; the head of the high-speed maglev train with the vacuum pipeline adopts a concave design, and the air resistance and the pressure wave in the vacuum pipeline are small because of thin air in the vacuum pipeline, and the noise is difficult to transmit in the vacuum pipeline, so that the air resistance and the noise are not main problems affecting the running of the train, and the main problems affecting the running of the train are how to dissipate the heat generated by the train body into the vacuum pipeline.
The conventional train heat dissipation mainly depends on the running process of the train, the heat dissipation component is in contact with the surrounding environment air, heat emitted by the train is taken away through air convection, air in the vacuum pipeline is thin, the vacuum pipeline is in a near-vacuum state, at the moment, the convection heat exchange mechanism is greatly weakened, so that the heat of the train heat dissipation component cannot be effectively discharged into the vacuum pipeline, and therefore, strengthening measures are needed to be taken, the artificial component convects the heat exchange environment, and the heat generated by the train heat dissipation component is taken away.
When the high-speed maglev train heat exchange system with the vacuum pipeline works, the guide side wall 1 collects residual air in the vacuum pipeline, the air compression pump 2 compresses the air collected by the guide side wall 1 to form compressed air, and the compressed air is transmitted to the first vortex tube bundle 3 and the second vortex tube bundle 4 through the first vortex tube bundle valve 10 and the second vortex tube bundle valve 13. The first vortex tube bundle 3 converts the compressed air into cold air and hot air and collects them in the first and second gas collection boxes 11 and 12, respectively, through pipes, and the second vortex tube bundle 4 converts the compressed air into cold air and hot air and collects them in the third and fourth gas collection boxes 14 and 15, respectively.
In summer, cold air in the first air collecting box 11 and the third air collecting box 14 is respectively conveyed to the first air channel 6 and the second air channel 7, and then heat release equipment between a condenser and power equipment in an air conditioner heat exchange machine room is cooled through the air inlet flow equalizing pore plate 8; the hot air in the second and fourth air tanks 12 and 15 is discharged into the vacuum duct through the first and second exhaust ports 16 and 17, respectively.
In winter, hot air in the second gas collection box 12 is conveyed to the first air channel 6 by switching the four-way reversing valve 5, and then a heat source is provided for an evaporator in an air-conditioning heat exchange machine room through the air inlet flow equalizing pore plate 8 to heat the maglev train; the cool air in the first air collection box 11 is discharged into the vacuum duct through the first air outlet 16. The air flow direction in the third air collection box 14 and the fourth air collection box 15 is consistent with that in summer, namely: the cold air in the third air collection box 14 is conveyed to the second air channel 7, and then the heat release equipment among the power equipment is cooled through the air inlet flow equalizing pore plate 8; the hot air in the fourth air collection box 15 is discharged into the vacuum duct through the second exhaust ports 17, respectively.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The heat exchange system is used for generating cold air required by heat dissipation of a condenser when the power equipment of the train dissipates heat and air conditioning cools by utilizing the residual air in the vacuum pipeline, or generating cold air required by heat dissipation of the power equipment of the train and hot air required by heat absorption of an evaporator when the air conditioning cools by utilizing the residual air in the vacuum pipeline; the vacuum pipeline is used for providing a near-vacuum running environment for the magnetic suspension train running on the track;
The heat exchange system comprises a diversion side wall (1), an air compression pump (2), a first vortex tube bundle (3), a second vortex tube bundle (4), a four-way reversing valve (5), a first air channel (6), a second air channel (7), an air inlet flow equalizing pore plate (8) and an exhaust flow equalizing pore plate (9);
The tail end of the flow guiding side wall (1) is connected with an air compression pump (2), the flow guiding side wall (1) is used for collecting residual air in a vacuum pipeline, and the air compression pump (2) is used for compressing the air collected by the flow guiding side wall (1);
the first vortex tube bundle (3) is used for converting compressed air input through a first vortex tube bundle valve (10) into cold air and hot air, and the cold air and the hot air obtained by conversion of the first vortex tube bundle (3) are respectively input into a first gas collection box (11) and a second gas collection box (12); the second vortex tube bundle (4) is used for converting compressed air input through a second vortex tube bundle valve (13) into hot air and cold air, and the cold air and the hot air obtained by conversion of the second vortex tube bundle (4) are respectively input into a third gas collection box (14) and a fourth gas collection box (15);
The four-way reversing valve (5) is connected with the first gas collecting tank (11), the second gas collecting tank (12), the first air channel (6) and the first exhaust port (16) through air pipelines at the same time, and the four-way reversing valve (5) is used for controlling the exhaust direction of the gas in the first gas collecting tank (11) and the second gas collecting tank (12); the third gas collection box (14) is connected with the second air channel (7) through an air pipeline, and the fourth gas collection box (15) is connected with the second exhaust port (17) through an air pipeline; the air inlet flow equalizing pore plate (8) is used for uniformly inputting the air in the first air channel (6) into an air conditioner heat exchange machine room to cool a condenser or heat an evaporator, and is used for uniformly inputting the cold air in the second air channel (7) into a power equipment room to strengthen the heat dissipation of heat release equipment; the exhaust flow equalizing pore plate (9) is used for exhausting gas between the air conditioner heat exchange machine room and the power equipment through the third exhaust port (18).
2. A vacuum pipe maglev train heat-exchange system according to claim 1 further comprising a first temperature sensor (19), wherein the first temperature sensor (19) is located in the air-conditioning heat-exchange room for measuring the air temperature of the air-conditioning heat-exchange room, and wherein the opening of the first vortex tube bundle valve (10) is controlled by the air temperature of the air-conditioning heat-exchange room.
3. A vacuum pipe maglev train heat-exchange system as claimed in claim 1 further comprising a second temperature sensor (20), said second temperature sensor (20) being located in the power plant room for measuring the air temperature between the power plants, the opening of said second vortex tube bundle valve (13) being controlled by the air temperature between the power plants.
4. A vacuum pipe maglev train heat-exchange system according to claim 1 further comprising a pressure sensor (21), a fourth exhaust port (22) and an exhaust valve (23), the pressure sensor (21) being located in a chamber for collecting compressed air output from the air compression pump (2) for measuring the air pressure in the chamber; the fourth exhaust port (22) is positioned on the inner wall of the chamber, the exhaust valve (23) is used for controlling the opening degree of the fourth exhaust port (22), and the opening degree of the exhaust valve (23) is controlled by the air pressure in the chamber.
5. A vacuum pipe maglev train heat-exchange system as claimed in claim 4 wherein the fourth exhaust ports (22) are symmetrically distributed on either side of the chamber.
6. A vacuum pipe maglev train heat-exchange system according to claim 1 wherein the first exhaust port (16) and the second exhaust port (17) are symmetrically distributed.
7. A vacuum pipe maglev train heat-exchange system as claimed in claim 1 further comprising a tapered tail (24), wherein the third exhaust port (18) is symmetrically located on the tapered tail (24).
8. A vacuum pipe maglev train heat-exchange system according to claim 1 wherein the first vortex tube bundle (3) and the second vortex tube bundle (4) are each arranged in parallel with 10-30 vortex tubes.
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| CN110104010A CN110104010A (en) | 2019-08-09 |
| CN110104010B true CN110104010B (en) | 2024-04-19 |
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