High-speed rail overhead line system deicing device

Abstract

The invention discloses a deicing device for a high-speed rail overhead line system, particularly relates to the technical field of deicing devices, and solves the problems that in the prior art, the distance between air outlets of a deicing device is fixed, and the deicing device is not suitable for a broken line type design of an overhead line system wire, that is, the designed air outlets cannot smoothly pass through at the turning position of the overhead line system, and deicing cannot be conducted; in addition, high power is needed for heating high-temperature gas, if the icing position is large, the distance between air outlets needs to be adjusted to be large, but the heat transfer efficiency is reduced. According to the technical scheme, a rotary saw blade is combined with an electric heating wire for deicing, power consumption is reduced, the adaptability with the power grid layout is remarkably improved, and in addition, an ice melting spraying device is added; according to the invention, the deicing efficiency can be improved, the icing probability of the power grid is reduced, and the icing condition of the power grid caused by freezing rain weather can be effectively handled.

Description

Technical Field

[0001] The present invention relates to the technical field of deicing devices, and in particular to a high-speed railway contact network deicing device. Background Art

[0002] When the high-speed rail contact network is covered with ice, it will affect the normal sliding of the pantograph and power transmission. Especially when the train is running too fast, the ice on the lower surface of the contact network can easily cause the hard and brittle carbon slide plate to break, directly leading to power outage of the train. Therefore, in bad weather, deicing is needed to restore the normal state of the contact network and ensure the normal operation of the train.

[0003] In the prior art, for example, the patent with application number CN202410616810.3 discloses a high-speed rail contact network automatic deicing robot system, which partially or completely melts the ice by blowing gas heated by a thermoelectric furnace to the iced area. Then perform power removal; the ice that cannot be completely melted in the previous step is removed by multiple rotating removal blades on the pantograph contact network disk group; finally, slide and remove; and remove the remaining ice on the basis of the previous step;

[0004] However, the fixed spacing between the air outlets of this type of de-icing device is not suitable for the zigzag design of the contact network conductor. That is, at the turning point of the contact network, the air outlet of this design may not be able to pass smoothly and de-ice. In addition, heating the high-temperature gas requires a large power. If the ice area is large, the air outlet spacing needs to be increased, but the heat transfer efficiency will become lower. Therefore, hot air de-icing is obviously not suitable as the main force. Summary of the invention

[0005] Therefore, the present invention solves the technical problem that the spacing between the air outlets of the de-icing device in the prior art is fixed and is not suitable for the zigzag design of the contact network conductor, that is, at the turning point of the contact network, the air outlet of this design may not be able to pass smoothly and cannot de-ice; in addition, heating the high-temperature gas requires a large power. If the ice area is large, the air outlet spacing needs to be increased, but the heat transfer efficiency will be reduced; the high-speed railway contact network de-icing device provided by the present invention uses a rotary saw blade combined with an electric heating wire for de-icing, which not only reduces power consumption, but also significantly improves the compatibility with the power grid layout. In addition, the addition of ice-melting spray reduces the probability of cable freezing, which can effectively deal with the icing condition of the power grid caused by freezing rain weather.

[0006] The present invention provides a high-speed railway contact network deicing device, comprising a base, which is arranged on the top of a carriage; a lifting mechanism is arranged on the base, and a deicing device is arranged on the lifting mechanism;

[0007] The lifting mechanism is used to control the height of the deicing device, and the deicing device is used to de-ice the high-speed railway contact network.

[0008] Furthermore, an ice-melting spray device is also provided on the lifting mechanism, and the ice-melting spray device is used to spray ice-melting agent on the high-speed railway contact network after the de-icing device de-ices the high-speed railway contact network.

[0009] Furthermore, the lifting mechanism includes a support arm connected to the base; the support arm is connected to a lifting arm at one end away from the base through a connecting shaft; a hydraulic cylinder barrel and a hydraulic cylinder piston are provided between the support arm and the lifting arm. The hydraulic cylinder piston is connected to the hydraulic cylinder barrel, the top of the hydraulic cylinder piston is connected to the lifting arm, and the bottom of the hydraulic cylinder barrel is connected to the support arm, so as to realize the lifting of the lifting arm.

[0010] Furthermore, the de-icing device includes a cutting de-icing plate, which is connected to the lifting arm through a connecting bracket; fine ice saw blades and coarse ice saw blades are arranged on the upper and lower sides of the cutting de-icing plate; the length of the fine ice saw blade is smaller than the coarse ice saw blade; the coarse ice saw blade and the fine ice saw blade can be set on the cutting de-icing plate using the principle of an electric saw, and then rotate around the cutting de-icing plate.

[0011] Furthermore, a heating resistor wire is arranged on the upper surface of the cutting and deicing plate, and a fan is arranged inside; a cavity is arranged inside the cutting and deicing plate, and the fan is arranged in the cavity, and a waterproof fan is adopted, and a protective shell is arranged outside the resistor wire to prevent short circuit.

[0012] Furthermore, the ice-melting spray device includes a connecting plate, which is arranged on the side of the cutting and deicing plate; a spray bracket is arranged on the connecting plate; a spray seat is arranged at one end of the spray bracket away from the connecting plate, and a spray tray is arranged on the spray seat; the bottom of the spray tray is rotatably connected to the spray seat through a bearing; a cavity is provided in the spray tray, a rotating motor is provided at the bottom of the cavity, a gear is provided on the output shaft of the rotating motor, and the gear is meshed with a gear ring provided in the spray seat; an atomizing motor is provided on the spray tray, a spray guard plate is provided on the atomizing motor, and an ionizing nozzle is provided on the spray guard plate; the atomizing motor is connected to the delivery pipe The end of the delivery pipe away from the atomizing motor is connected to the pump arranged on the base, and the pump is connected to the ice melt storage box; the input end of the pump is connected to the ice melt storage box, and the output end is connected to the delivery pipe, and the delivery pipe can pass through the spray seat, through the cavity in the spray tray, and be connected to the spray motor; and the spray motor and the spray tray can also adopt the connection method between the bottom of the spray tray and the spray seat to set a rotating motor, so as to realize the rotation of the spray motor itself, and then drive the spray guard plate to rotate; the rotation requirement of the rotating motor is at most one circle, and it is reversed and reset to avoid entanglement of the delivery pipe; the ionization nozzle on the spray guard plate is connected to the output end of the spray motor to realize spraying.

[0013] Furthermore, a drainage groove is provided on the cutting and deicing plate.

[0014] Furthermore, a laser rangefinder is provided on the side of the cutting and deicing plate.

[0015] Furthermore, the cutting and deicing plate is in a waist-round shape, which can accommodate longer saw blades and has a larger cutting capacity. In addition, the working stroke of the saw blade is longer, and there is a greater probability of throwing out the ice stuck between the saw blades, thereby ensuring the cutting efficiency.

[0016] Furthermore, a speed sensor is arranged beside the laser rangefinder; the laser rangefinder and the speed sensor are both arranged in the direction in which the cutting de-icing plate corresponds to the forward movement of the carriage.

[0017] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0018] 1. The present invention provides a high-speed railway contact network deicing device, which uses a rotary saw blade combined with an electric heating wire for deicing. In addition, the addition of ice-melting spray reduces the probability of cable icing. Compared with the current technology, the deicing efficiency is low, especially when deicing larger ice blocks. At the same time, the equipment power consumption is too high, and there are difficulties in adapting to the power grid layout. Not only does the power consumption decrease, the present invention significantly improves the adaptability to the power grid layout, and can effectively deal with the icing condition of the power grid caused by freezing rain weather.

[0019] 2. The high-speed rail contact network deicing device provided by the present invention can be directly installed above the high-speed rail carriage without occupying railway resources, and can be retracted when idle, reducing occupied space and wind resistance; the deicing efficiency is higher, and compared with the existing invention of using high-temperature gas to melt ice, the saw blade deicing included in the present invention is more efficient.

[0020] 3. The present invention provides a high-speed railway contact network de-icing device. After the de-icing device de-ices, the pump moves to transport the ice-melting agent in the ice-melting agent storage box to the atomizing motor through the delivery pipe. The atomizing motor ionizes the ice-melting agent through the ionization nozzle and then sprays it to the high-speed railway contact network. Because the ice-melting particles sprayed by the atomizing motor carry electric charge, the nozzle first sprays the particles above the power grid to prevent affecting the conductive performance of the pantograph. When the pantograph moves forward with the high-speed railway, the charged ice-melting particles will automatically sink and be adsorbed on the power grid, making it easy to add ice-melting particles. Even if the weather continues to snow, the de-icing effect can be prolonged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 For the present invention Figure 1A-direction view of the central de-icing device;

[0024] Figure 3 For the present invention Figure 1 B-direction view of the central de-icing device;

[0025] Figure 4 For the present invention Figure 1 C-direction view of the middle ice-melting agent storage tank;

[0026] Figure 5 It is a schematic diagram of the overall structure of the ice melting spray device of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the ice melting spray device of the present invention;

[0028] Figure 7 For the present invention Figure 6 The enlarged view of point D;

[0029] Description of reference numerals:

[0030] 1. Heating resistor wire; 2. Fine ice saw blade; 3. Coarse ice saw blade; 4. Cutting de-icing plate; 5. Laser rangefinder; 6. Spray seat; 7. Connecting bracket; 8. Fan; 9. Drain trough; 10. Lifting arm; 11. Hydraulic cylinder barrel; 12. Hydraulic cylinder piston; 13. Support arm; 14. Base; 15. Connecting shaft; 16. Delivery pipe; 17. De-icing agent storage box; 18. Connecting plate; 19. Spray bracket; 20. Spray tray; 21. Rotating motor; 22. Atomizing motor; 23. Spray guard plate; 24. Ionizing nozzle; 25. Pump; 26. Speed ​​sensor; 27. Gear; 28. Bearing. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] This embodiment provides a high-speed railway contact network deicing device, such as Figure 1 It mainly includes a base 14, which is arranged on the top of the carriage; a lifting mechanism is arranged on the base 14, and a deicing device is arranged on the lifting mechanism;

[0033] The lifting mechanism is used to control the height of the deicing device, and the deicing device is used to de-ice the high-speed railway contact network.

[0034] In this embodiment, an ice-melting spray device is further provided on the lifting mechanism, and the ice-melting spray device is used to spray ice-melting agent on the high-speed railway contact network after the de-icing device de-ices the high-speed railway contact network.

[0035] In this embodiment, the lifting mechanism includes a support arm 13 connected to a base 14; the end of the support arm 13 away from the base 14 is connected to a lifting arm 10 through a connecting shaft 15; a hydraulic cylinder barrel 11 and a hydraulic cylinder piston 12 are provided between the support arm 13 and the lifting arm 10.

[0036] The lifting arm 10 is lifted and lowered by extending and retracting the hydraulic cylinder, thereby completing the height adjustment of the deicing device.

[0037] In this embodiment, the deicing device includes a cutting deicing plate 4, which is connected to a lifting arm 10 through a connecting bracket 7; a thin ice saw blade 2 and a thick ice saw blade 3 are arranged on the upper and lower sides of the cutting deicing plate 4; the length of the thin ice saw blade 2 is smaller than the thick ice saw blade 3. A heating resistor wire 1 is arranged on the upper surface of the cutting deicing plate 4, and a fan 8 is arranged inside. A drainage groove 9 is opened on the cutting deicing plate 4. A laser rangefinder 5 is arranged on the side of the cutting deicing plate 4.

[0038] During deicing, the lifting mechanism raises the deicing device by applying pressure through the hydraulic cylinder. At the same time, the laser rangefinder 5 works. When the heating resistor 1 is a certain distance away from the power grid, the lifting stops to ensure that the power grid does not contact the heating resistor 1, and prevent the power grid from affecting its conductivity due to excessive temperature. When the high-speed rail moves forward, the coarse ice saw blade 3 and the fine ice saw blade 2 start to work. Since the coarse ice saw blade 3 is longer, it contacts the ice first. First, the larger ice is cut by the coarse ice saw blade 3. At this time, the power grid only retains the ice closest to the wire. The fine ice saw blade 2 further crushes the ice, and finally only a very small amount of ice is left. After that, the heating resistor 1 and the fan 8 work to blow the heated high-temperature gas to the power grid to melt the remaining ice. During the high-speed rail's movement, the laser rangefinder 5 keeps working, measures the direction of the power grid through laser, and then turns on the heating wire under the corresponding power grid position to reduce the overall power of the deicing device.

[0039] In the present embodiment, the ice-melting spray device comprises a connecting plate 18, which is arranged on the side of the cutting and deicing plate 4; a spray bracket 19 is arranged on the connecting plate 18; a spray seat 6 is arranged at one end of the spray bracket 19 away from the connecting plate 18, and a spray tray 20 is arranged on the spray seat 6; the bottom of the spray tray 20 is rotatably connected to the spray seat 6; a cavity is provided in the spray tray 20, and a rotating motor 21 is provided at the bottom of the cavity, and a gear 27 is provided on the output shaft of the rotating motor 21, and the gear 27 is meshed with the gear ring provided in the spray seat 6; the outer ring of the bearing 28 is fixedly connected to the spray seat 6, and the inner ring is connected to the bottom of the spray tray 20, so as to realize the rotatable connection between the bottom of the spray tray 20 and the spray seat 6; the spray tray 20 is provided with a spray The atomizing motor 22 is provided with a spray guard plate 23, and the spray guard plate 23 is provided with an ionizing nozzle 24; the atomizing motor 22 is connected to the delivery pipe 16, and the delivery pipe 16 is connected to the pump 25 arranged on the base 14 at one end away from the atomizing motor 22, and the pump 25 is connected to the ice melt storage box 17; the input end of the pump 25 is connected to the ice melt storage box, and the output end is connected to the delivery pipe 16, and the delivery pipe 16 can pass through the spray seat 6, through the cavity in the spray tray 20, and connect to the spray motor; and the spray motor and the spray tray 20 can also adopt the connection method between the bottom of the spray tray 20 and the spray seat 6, so as to realize the rotation of the spray motor itself, and then drive the spray guard plate 23 to rotate; the ionizing nozzle 24 on the spray guard plate 23 is connected to the output end of the spray motor to realize spraying. A speed sensor 26 is arranged next to the laser rangefinder 5.

[0040] After the de-icing device removes ice, the pump 25 moves to transport the de-icing agent in the de-icing agent storage box 17 to the atomizing motor 22 through the delivery pipe 16. After the atomizing motor 22 is atomized, it is ionized by the ionizing nozzle 24 and then sprayed toward the high-speed rail contact network. Because the de-icing particles sprayed out carry electric charge, the nozzle first sprays the particles above the power grid to prevent affecting the conductive performance of the pantograph. When the pantograph moves forward with the high-speed rail, the charged de-icing particles will be adsorbed on the power grid by itself, making it easy to add de-icing particles. Even if the weather continues to snow, the de-icing effect can be extended. The speed sensor 26 adjusts the flow rate of the spray and the number of nozzles working according to different vehicle speeds. Two groups of nozzles and spray trays 20 can be set, and a rotating motor 21 can be set under the spray motor and the spray tray 20. The rotating motor 21 drives them to rotate and adjust to ensure that the spray completely covers the power grid. Even if one group of nozzles fails, there is another group of nozzles ready at any time.

[0041] Based on the above device, the following deicing efficiency calculation is performed;

[0042] The heating power required for freezing at -4°C is calculated as: T = m*q / p*η;

[0043] Where, T: melting time (seconds); q: melting heat (calories / gram); m: mass of ice (grams); p: output power (kilowatts); η: efficiency (%);

[0044] Specific heat of ice: 2.1 kJ / (kg*℃); Heat of fusion of ice: 335 kJ / (kg*℃); 1 kJ = 238.9 cal; Assume the temperature of ice is -4℃; The energy required to melt 1 kg of ice is 1*{0-(-4)}*2.1+335=343.4 kJ*238.9 cal / kJ=82038.26 cal;

[0045] Calculated based on the ice weight of 100 grams per meter of wire, T = (100g*82.038) / p*η;

[0046] v: speed (m / s);

[0047]

[0048] Assume the driving speed is 54Km / h (15m / s); Assume the hot air conduction efficiency is 80%; then the heating power p = 153821.25w ≈ 154kw;

[0049] After checking, the rated power of 18-inch ice saws such as Yusen 5900 is 2000W (can saw 20cm ice layer); industrial fans, diameter 21.5cm; such as Delixi pipeline 200-2P, rated power 180W, air volume 1350 cubic meters / hour;

[0050] Power calculation of the present invention:

[0051] The power of the thermal resistor is 250KW (only the resistor below the ice is turned on); the fine ice saw blade and the coarse ice saw blade are at a maximum of 2000W; the fans are 180W each when working at the same time; the total power of the entire deicing part is W=250K+2K*2+0.18K*9=255.62KW; and the wheel power of the high-speed rail is generally above 9000kw, which can be connected to the high-speed rail power supply and directly use the existing circuit. The present invention has a base at the bottom that can be directly installed on the top of the high-speed rail carriage, does not occupy railway resources, and can be retracted in an idle state, reducing space and wind resistance; the deicing efficiency is higher, and compared with the existing invention of melting ice with high-temperature gas, the deicing of the saw blade included in the present invention is more efficient; a rotating tray can also be set under the cutting deicing plate to adjust the up and down inclination angle of the deicing plate, and the cutting is more flexible.

[0052] Embodiment 2:

[0053] Different from the above embodiment, in this embodiment, the cutting and deicing plate 4 is in a round shape. The cutting and deicing plate 4 is in a round shape as a whole, and this design can accommodate a longer saw blade and has a larger cutting capacity. In addition, the working stroke of the saw blade is longer, and there is a greater probability of throwing out the ice stuck between the saw blades, thereby ensuring the cutting efficiency.

[0054] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-speed railway contact network deicing device, characterized in that: It comprises a base (14) arranged on the top of the carriage; a lifting mechanism is arranged on the base (14), and a deicing device is arranged on the lifting mechanism; The lifting mechanism is used to control the height of the deicing device, and the deicing device is used to de-ice the high-speed railway contact network.

2. The high-speed railway contact network deicing device according to claim 1 is characterized in that: The lifting mechanism is also provided with an ice-melting spray device, which is used to spray an ice-melting agent on the high-speed railway contact network after the de-icing device de-ices the high-speed railway contact network.

3. The high-speed railway contact network deicing device according to claim 2 is characterized in that: The lifting mechanism comprises a support arm (13) connected to a base (14); one end of the support arm (13) away from the base (14) is connected to a lifting arm (10) via a connecting shaft (15); a hydraulic cylinder barrel (11) and a hydraulic cylinder piston (12) are provided between the support arm (13) and the lifting arm (10).

4. The high-speed railway contact network deicing device according to claim 3 is characterized in that: The deicing device comprises a cutting deicing plate (4) which is connected to a lifting arm (10) via a connecting bracket (7); a thin ice saw blade (2) and a coarse ice saw blade (3) arranged vertically are arranged on the side of the cutting deicing plate (4); the sawtooth length of the thin ice saw blade (2) is smaller than the sawtooth length of the coarse ice saw blade (3).

5. The high-speed railway contact network deicing device according to claim 4 is characterized in that: The upper surface of the cutting and deicing plate (4) is provided with a heating resistance wire (1), and a fan (8) is provided inside.

6. The high-speed railway contact network deicing device according to claim 5, characterized in that: The ice-melting spray device comprises a connecting plate (18) arranged on the side of a cutting and deicing plate (4); a spray bracket (19) is arranged on the connecting plate (18); a spray seat (6) is arranged at one end of the spray bracket (19) away from the connecting plate (18), and a spray tray (20) is arranged on the spray seat (6); the bottom of the spray tray (20) is rotatably connected to the spray seat (6); a cavity is provided in the spray tray (20), a rotating motor (21) is arranged at the bottom of the cavity, and a rotating motor (21) is arranged on the output shaft of the rotating motor (21) A gear (27) is meshed with a gear ring provided in the spray seat (6); an atomizing motor (22) is provided on the spray tray (20); a spray guard plate (23) is provided on the atomizing motor (22); an ionizing nozzle (24) is provided on the spray guard plate (23); the atomizing motor (22) is connected to a delivery pipe (16); an end of the delivery pipe (16) away from the atomizing motor (22) is connected to a pump (25) provided on the base (14); and the pump (25) is connected to an ice-melting agent storage tank (17).

7. The high-speed railway contact network deicing device according to claim 6, characterized in that: The cutting and deicing plate (4) is provided with a drainage groove (9).

8. The high-speed railway contact network deicing device according to claim 7, characterized in that: A laser rangefinder (5) is arranged on the side of the cutting and deicing plate (4).

9. The high-speed railway contact network deicing device according to claim 8, characterized in that: The cutting and deicing plate (4) is in a round shape.

10. The high-speed railway contact network deicing device according to claim 6, characterized in that: A speed sensor (26) is arranged beside the laser rangefinder (5).

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