CN113382610A - Automatic electrical control cabinet of electric locomotive and working method - Google Patents
Automatic electrical control cabinet of electric locomotive and working method Download PDFInfo
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- CN113382610A CN113382610A CN202110677187.9A CN202110677187A CN113382610A CN 113382610 A CN113382610 A CN 113382610A CN 202110677187 A CN202110677187 A CN 202110677187A CN 113382610 A CN113382610 A CN 113382610A
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- control cabinet
- carbon dioxide
- fan
- electric locomotive
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20372—Cryogenic cooling; Nitrogen liquid cooling
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an automatic electrical control cabinet of an electric locomotive, which comprises an electric locomotive control cabinet, wherein a vertical gas column is arranged in the middle of a cabinet bin of the electric locomotive control cabinet, and a vertical gas channel is arranged inside the vertical gas column; a plurality of emergency cooling units are distributed on two sides of the vertical gas column in an equidistant array manner along the vertical direction; the suction ejection outlet of the invention sprays to the overheating electric unit in a mode of periodically sweeping left and right, so that the ejected low-temperature carbon dioxide covers the overheating electric unit comprehensively instead of spraying to the overheating electric unit only; thereby enhancing the uniformity of emergency cooling of the overheated electrical unit.
Description
Technical Field
The invention belongs to the field of electric locomotives.
Background
On an electric locomotive, once the temperature in an electric cabinet is overheated, in order to prevent further fire, a power supply is normally automatically turned off immediately; however, because the electric locomotive is in a high-speed running state, the instant power-off is equivalent to no reaction time for workers, so that accidents are easy to occur; therefore, it is necessary to further search and develop a system structure capable of performing emergency treatment without immediately turning off the power supply when an overheating state occurs in one of the units of the electrical cabinet.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an automatic electrical control cabinet of an electric locomotive capable of being cooled in an emergency manner and a working method
The technical scheme is as follows: in order to achieve the purpose, the automatic electrical control cabinet of the electric locomotive comprises an electric locomotive control cabinet, wherein a vertical gas column is arranged in the middle of a cabinet bin of the electric locomotive control cabinet, and a vertical gas channel is arranged inside the vertical gas column; a plurality of emergency cooling units are distributed on two sides of the vertical gas column in an equidistant array manner along the vertical direction;
when the electric locomotive control cabinet works normally, each emergency cooling unit can absorb hot air at the position of the emergency cooling unit and converge the hot air into the gas channel in the vertical gas column;
when the electric locomotive control cabinet is overheated, each emergency cooling unit can spray low-temperature carbon oxide.
Further, a centrifugal exhaust fan is fixedly installed outside the control cabinet of the electric locomotive, and an air inlet of the centrifugal exhaust fan is communicated with the gas channel inside the vertical gas column through a negative pressure pipe; and the air outlet end of the centrifugal exhaust fan is communicated with the outside.
Further, a first valve is arranged on the negative pressure pipe.
Furthermore, a plurality of ventilating meshes are distributed on the top wall body of the electric locomotive control cabinet in an array mode.
The electric locomotive control cabinet is characterized by further comprising a liquid carbon dioxide tank fixedly mounted outside the electric locomotive control cabinet, wherein a carbon dioxide leading-out end of the liquid carbon dioxide tank is communicated with an internal gas channel of the vertical gas column through a carbon dioxide guide pipe; and a second valve is arranged on the carbon dioxide guide pipe.
The automated electric control cabinet of electric locomotive of claim, wherein: a plurality of electric units are distributed on two sides of a vertical air column in a cabinet bin of the electric locomotive control cabinet in a rectangular array manner, a temperature sensor is arranged at the position of each electric unit, and the electric units are fixedly arranged on an electric component support; recording every three adjacent transverse rows of electric units as an electric unit set, wherein each electric unit set corresponds to one emergency cooling unit; the emergency cooling unit can spray low-temperature carbon dioxide to any one electric unit on the corresponding electric unit set.
Further, three horizontal rows of electrical units on the electrical unit set are respectively marked as a first horizontal row of electrical units, a second horizontal row of electrical units and a third horizontal row of electrical units from top to bottom; the emergency cooling unit corresponding to the electric unit set comprises a transverse linear rack which is as high as the second transverse row of electric units; one side of the toothed body of the transverse linear rack faces the second transverse row of electric units; one end of the transverse linear rack close to the vertical gas column is integrally connected with a hollow rotary communicating column along the length direction, a communicating bin which is communicated along the axis direction is arranged in the hollow rotary communicating column, the emergency cooling unit further comprises a hard communicating cylinder which is fixed on the side wall of the vertical gas column, and the hard communicating cylinder and the communicating column are coaxially and rotatably sleeved through a sealing bearing; a communicating bin in the communicating column is communicated with a gas channel in the vertical gas column through the hard communicating cylinder; one end of the transverse linear rack, which is far away from the vertical air column, is integrally connected with an elevation angle adjusting shaft, and the elevation angle adjusting shaft and the hollow rotary communicating column have the same axle center; the emergency cooling unit also comprises a motor bracket fixed on the side part of the control cabinet of the electric locomotive, an elevation angle adjusting motor is fixedly arranged on the motor bracket, and the elevation angle adjusting motor can drive an elevation angle adjusting shaft to rotate; a flow guide channel is arranged in the transverse linear rack along the length direction; one end of the flow guide channel is communicated with the communicating bin, and the other end of the flow guide channel extends to the middle position of the transverse linear rack along the length direction.
Furthermore, the emergency cooling unit corresponding to the electric unit set also comprises a travelling wheel with the axis vertical to the transverse linear rack, and the travelling wheel is in rolling fit with the upper side surface of the transverse linear rack; two roller shafts which are integrally and coaxially connected with the two ends of the travelling wheel are respectively in running fit with the first bearing block and the second bearing block through bearings; the first bearing seat and the second bearing seat are fixedly connected through a connecting frame; the emergency cooling unit also comprises an annular gear, and the annular gear is meshed with the transverse linear rack; the gas distribution device also comprises a gas distribution disc which is coaxial with the annular gear, and the outer ring surface of the gas distribution disc is in sliding fit with the inner wall surface of the ring body of the annular gear; one end of the air distribution disc is coaxially and integrally provided with a fixed shaft; the outer wall of the fixed shaft is in rotating fit with the inner wall surface of the ring body of the annular gear through a second sealing bearing; one side of the edge of the outline of one end of the distribution disc close to the fixed shaft, close to the second transverse row of electric units, is provided with a fan-shaped annular distribution notch, and the fan-shaped circle center of the fan-shaped annular distribution notch is positioned on the axis of the distribution disc; a core bin is arranged at the axle center of one end of the gas distribution disc close to the fixed shaft; the core bin is communicated with one end, close to the circle center, of the fan-shaped annular gas distribution notch;
the first bearing seat is fixedly connected with the end part of the fixed shaft through a connecting arm;
six fluid channels are distributed on the annular gear in a circumferential array, and the length of each group of fluid channels extends along the radial direction of the annular gear; the suction and ejection ports of the fluid channels are arranged at the tooth tips of the tooth bodies on the low-temperature carbon dioxide ejection gear; two guide wheels which are distributed left and right are arranged on one side of the transverse linear rack, which is far away from the annular gear, the axes of the two guide wheels are vertical, and the two guide wheels are in rolling fit with the back side surface of the transverse linear rack; the wheel shafts of the two guide wheels are rotatably arranged on a guide wheel bracket through bearings, and the guide wheel bracket is fixed on the second bearing block; the fire-proof flexible pipe is characterized by also comprising a flexible pipe made of a fire-proof material, wherein a first pipe orifice and a second pipe orifice are respectively arranged at two ends of the flexible pipe; the first pipe orifice of the flexible pipe is communicated with one end of the flow guide channel, which is far away from the communicating bin; the second pipe orifice of the flexible pipe is communicated with the core bin.
Further, a travelling wheel driving motor is fixedly mounted on the guide wheel bracket; an output shaft of the travelling wheel driving motor is in driving connection with a roller shaft of the travelling wheel; the central angle of the fan-shaped air distribution notch is smaller than 60 degrees, so that the inlet of at most one fluid channel is communicated with the fan-shaped air distribution notch, and the inlet of the fluid channel which is not communicated with the fan-shaped air distribution notch is blocked by the outer ring surface of the air distribution disc;
when any one electric unit is positioned right in front of the annular gear, one of the six fluid passages is communicated with the fan-shaped annular matching notch, and jet flow jetted from the suction and ejection port of the fluid passage communicated with the fan-shaped annular matching notch can be just jetted to the middle part of the electric unit right in front.
Further, the working method of the automatic electric control cabinet of the electric locomotive comprises the following steps:
the working method when the electric locomotive control cabinet normally operates comprises the following steps:
in an initial state, the fan-shaped air distribution notch on each emergency cooling unit is just communicated with a fluid channel; when each electric unit in the control cabinet of the electric locomotive normally operates, heat can be continuously and slowly transferred to the nearby area and accumulated in the cabinet bin; controlling a centrifugal exhaust fan to enable a gas channel in the vertical gas column to form negative pressure, and transmitting the negative pressure in the gas channel in the vertical gas column into a core bin on each emergency cooling unit through each flow guide channel and a flexible pipe; the negative pressure in the core bin is transmitted to the fluid channel communicated with the fan-shaped annular air distribution gap through the fan-shaped annular air distribution gap, and the suction ejection outlet forms negative pressure; therefore, each emergency cooling unit is provided with a suction and ejection port of a fluid channel to continuously suck hot air at the position under the action of negative pressure; therefore, the hot air near each group of electric unit set in the control cabinet of the electric locomotive is continuously sucked away by the suction ejection outlet at the position, and finally the hot air in the control cabinet of the electric locomotive is discharged to the outside through the air outlet end of the centrifugal exhaust fan; meanwhile, the relatively cold air outside continuously downwards supplements the electric locomotive control cabinet through a plurality of ventilating meshes distributed on the top wall body of the locomotive control cabinet in an array manner; further realizing the effect of active heat dissipation;
the emergency working method when any one electric unit in the electric locomotive control cabinet is overheated comprises the following steps:
when the temperature sensor at the position of one electric unit in one group of electric unit set detects that the temperature at the position exceeds a preset value; then quickly closing a first valve on the negative pressure pipe; controlling a second valve on the carbon dioxide conduit to open; at the moment, carbon dioxide in the liquid carbon dioxide tank flows into the gas channel in the vertical gas column through the carbon dioxide guide pipe in a low-temperature carbon dioxide gas mode to form positive pressure filled with the carbon dioxide, and high-pressure carbon dioxide in the gas channel in the vertical gas column is pressed into the core bin on each emergency cooling unit through each flow guide channel and the flexible pipe; the high-pressure low-temperature carbon dioxide in the core bin is extruded into a fluid channel communicated with the fan-shaped annular gas distribution gap through the fan-shaped annular gas distribution gap and is ejected from an ejection port in the form of low-temperature carbon dioxide gas; so that each emergency cooling unit is provided with a suction ejection outlet of a fluid channel to eject carbon dioxide; therefore, carbon dioxide gas is continuously injected into the position of each group of electrical unit assembly in the control cabinet of the electric locomotive, and the density of the carbon dioxide is higher than that of air, so that the cabinet chamber of the control cabinet of the electric locomotive is quickly and uniformly filled with the carbon dioxide, all electrical units in the control cabinet of the electric locomotive are isolated from oxygen on the whole, and the phenomenon of global flame retardance is realized;
recording an overheated electric unit identified by the temperature sensor as an overheated electric unit;
although the global flame-retardant effect is achieved at present, the overheated electric unit is likely to be in an energized state, and the overheated state of the overheated electric unit is still not released; at this time, in order to ensure that the train staff has certain emergency preparation time, the overheated electric unit cannot be immediately powered off; therefore, the overheating electrical unit needs to be cooled down separately and emergently;
at the moment, the travelling wheel driving motors of all the emergency cooling units are controlled simultaneously, so that the travelling wheels travel along the length direction of the transverse linear rack, and further, all the annular gears and the transverse linear rack do meshing motion, so that all the annular gears rotate along the axes of the annular gears, and according to the transmission relation, the air distribution disc cannot rotate along the axes along with the annular gears, so that the inner wall surface of the ring body of the annular gears and the outer ring surface of the air distribution disc slide, and when all the fluid channels are blocked by the outer ring surface of each air distribution disc, all the travelling wheel driving motors are halted; at the moment, all the emergency cooling units stop injecting carbon dioxide;
recording a group of electrical unit sets where the overheated electrical units are located as target electrical unit sets;
then independently controlling a traveling wheel driving motor of an emergency cooling unit corresponding to a target electric unit set at once, enabling the traveling wheel to slowly travel along the length direction of a transverse linear rack, further driving a ring gear to move along the length direction of the transverse linear rack, meanwhile, enabling the ring gear to do meshing motion with the transverse linear rack, enabling a gas distribution disc not to rotate along the axis along with the ring gear, and when the ring gear moves along the length direction of the transverse linear rack, once an overheated electric unit is just positioned right ahead of the ring gear, suspending the traveling wheel driving motor, then just communicating a fluid channel with a fan-shaped annular gas distribution gap, and controlling an elevation angle adjusting shaft to rotate, thereby adjusting the jet elevation angle of a suction and ejection port of a fluid channel communicated with the fan-shaped gas distribution gap, and enabling a low-temperature carbon dioxide jet ejected by the suction and ejection port of the fluid channel communicated with the fan-shaped gas distribution gap to just shoot to the middle part of the overheated electric unit; thereby realizing the independent high-intensity emergency cooling of the overheated electric unit;
at the moment, a travelling wheel driving motor is controlled to make the travelling wheel rotate forwards and backwards periodically, so that the annular gear rotates forwards and backwards periodically under the action of meshing transmission, the maximum rotation angle of the annular gear which rotates forwards and backwards periodically does not exceed the central angle of the fan-shaped annular gas distribution gap, and in the process of making the annular gear rotate forwards and backwards periodically, a fluid channel corresponding to a suction ejection outlet which is ejecting carbon dioxide is always communicated with the fan-shaped annular gas distribution gap, and the ejection angle of the suction ejection outlet which is ejecting carbon dioxide can incline leftwards and rightwards periodically, so that the suction ejection outlet ejects the superheated electric unit in a mode of sweeping leftwards and rightwards periodically, and ejected low-temperature carbon dioxide covers the superheated electric unit completely instead of only ejecting the middle area of the superheated electric unit; thereby enhancing the uniformity of emergency cooling of the overheated electrical unit.
Has the advantages that: the suction ejection outlet is ejected to the overheating electric unit in a mode of periodically sweeping left and right, so that ejected low-temperature carbon dioxide covers the overheating electric unit comprehensively instead of being ejected to the middle area of the overheating electric unit; thereby enhancing the uniformity of emergency cooling of the overheated electrical unit.
Drawings
FIG. 1 is a front view of the overall structure of the device;
FIG. 2 is a schematic perspective view of the apparatus;
FIG. 3 is a first perspective cross-sectional view of the present device;
FIG. 4 is a second perspective cross-sectional view of the present device;
FIG. 5 is a schematic diagram of the distribution of the sets of electrical units;
FIG. 6 is a schematic perspective view of FIG. 5;
FIG. 7 is a schematic diagram of the emergency cooling unit in combination with an electrical unit;
FIG. 8 is a schematic view of the adjustment of the elevation angle of the jet;
FIG. 9 is a top view of FIG. 7;
FIG. 10 is a schematic view showing a sweep range of an injection angle of an intake/exhaust port through which carbon dioxide is injected;
FIG. 11 is a schematic structural diagram of an emergency cooling unit;
FIG. 12 is a cross-sectional view of FIG. 11;
FIG. 13 is a schematic view of FIG. 11 with the rack hidden;
FIG. 14 is a disassembled schematic view of FIG. 13;
fig. 15 is a cross-sectional view of fig. 14.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The automatic electrical control cabinet of the electric locomotive shown in fig. 1 to 15 comprises an electric locomotive control cabinet 50, wherein a vertical gas column 100 is arranged in the middle of a cabinet chamber 42 of the electric locomotive control cabinet 50, and a vertical gas channel is arranged inside the vertical gas column 100; a plurality of emergency cooling units 130 are distributed on both sides of the vertical gas column 100 along the vertical direction in an equidistant array manner;
when the electric locomotive control cabinet 50 works normally, each emergency cooling unit 130 can suck hot air at the position of the emergency cooling unit and converge the hot air into the gas channel in the vertical gas column 100;
when the electric locomotive control cabinet 50 is overheated, each emergency cooling unit 130 can spray low-temperature carbon oxide.
A centrifugal exhaust fan 127 is fixedly installed outside the electric locomotive control cabinet 50, and an air inlet of the centrifugal exhaust fan 127 is communicated with an internal gas channel of the vertical gas column 100 through a negative pressure pipe 125; the air outlet end 128 of the centrifugal blower 127 is communicated with the outside.
The negative pressure pipe 125 is provided with a first valve 888.
A plurality of ventilating meshes 124 are distributed on the top wall body 126 of the electric locomotive control cabinet 50 in an array manner.
The electric locomotive control cabinet 50 further comprises a liquid carbon dioxide tank 120 fixedly mounted on the outside, and a carbon dioxide outlet end of the liquid carbon dioxide tank 120 is communicated with an internal gas channel of the vertical gas column 100 through a carbon dioxide conduit 122; the carbon dioxide conduit 122 is provided with a second valve 121.
A plurality of electrical units 24 are distributed on two sides of a vertical air column 100 in a cabinet chamber 42 of the electric locomotive control cabinet 50 in a rectangular array, a temperature sensor is arranged at the position of each electrical unit 24, and the electrical units 24 are fixedly arranged on an electrical component support 75; each adjacent three horizontal rows of electrical units 24 are marked as an electrical unit set 000, as shown in fig. 5, each electrical unit set 000 corresponds to one emergency cooling unit 130; the emergency cooling unit 130 can spray low-temperature carbon dioxide to any one of the electrical units 24 in the corresponding electrical unit set 000.
Three rows of electrical units 24 in the electrical unit set 000 are respectively referred to as a first row of electrical units 024, a second row of electrical units 0024, and a third row of electrical units 00024 from top to bottom; the emergency cooling unit 130 corresponding to the electrical unit set 000 includes a horizontal linear rack 31 having the same height as the second horizontal row of electrical units 0024; the toothed side of the transverse linear rack 31 faces the second transverse row of electrical units 0024; one end of the transverse linear rack 31 close to the vertical gas column 100 is integrally connected with a hollow rotary communicating column 104 along the length direction, a communicating bin 105 which is communicated along the axial direction is arranged in the hollow rotary communicating column 104, the emergency cooling unit 130 further comprises a hard communicating cylinder 102 which is fixed on the side wall of the vertical gas column 100, and the hard communicating cylinder 102 and the communicating column 104 are coaxially and rotatably sleeved through a sealing bearing 103; a communication bin 105 in the communication column 104 is communicated with a gas channel in the vertical gas column 100 through the hard communication cylinder 102; an elevation angle adjusting shaft 129 is integrally connected to one end, far away from the vertical air column 100, of the transverse linear rack 31, and the elevation angle adjusting shaft 129 and the hollow rotary communicating column 104 are coaxial; the emergency cooling unit 130 further comprises a motor support 111 fixed on the side of the electric locomotive control cabinet 50, an elevation angle adjusting motor 110 is fixedly mounted on the motor support 111, and the elevation angle adjusting motor 110 can drive the elevation angle adjusting shaft 129 to rotate; a flow guide channel 777 is arranged in the transverse linear rack 31 along the length direction, as shown in fig. 12; one end of the flow guide channel 777 is communicated with the communicating bin 105, and the other end of the flow guide channel 777 extends to the middle position of the transverse linear rack 31 along the length direction.
The emergency cooling unit 130 corresponding to the electrical unit set 000 further comprises a traveling wheel 106 with an axis perpendicular to the transverse linear rack 31, and the traveling wheel 106 is in rolling fit with the upper side surface 31.1 of the transverse linear rack 31; two roller shafts which are integrally and coaxially connected with the two ends of the walking wheel 106 are respectively in running fit with the first bearing seat 132 and the second bearing seat 133 through bearings; the first bearing seat 132 and the second bearing seat 133 are fixedly connected through a connecting frame 135; the emergency cooling unit 130 further comprises a ring gear 28, wherein the ring gear 28 is meshed with the transverse linear rack 31; the gas distribution device also comprises a gas distribution disc 37 which is coaxial with the annular gear 28, and an outer ring surface 36 of the gas distribution disc 37 is in sliding fit with the inner wall surface 2 of the ring body of the annular gear 28; one end of the air distribution disc 37 is coaxially and integrally provided with a fixed shaft 139; the outer wall of the fixed shaft 139 is rotationally fitted with the inner wall surface 2 of the ring body of the ring gear 28 through a second seal bearing 131; a fan-shaped annular air distribution notch 18 is arranged on one side, close to the second transverse row electrical unit 0024, of the edge of the outline of one end, close to the fixed shaft 139, of the air distribution disc 37, and the fan-shaped circle center of the fan-shaped annular air distribution notch 18 is on the axis of the air distribution disc 37; a core bin 29 is arranged at the axle center of one end of the air distribution disc 37 close to the fixed shaft 139, as shown in fig. 15; the core bin 29 is communicated with one end of the fan-shaped air distribution notch 18 close to the circle center;
the first bearing seat 132 is fixedly connected with the end of the fixed shaft 139 through a connecting arm 138;
six fluid channels 19 are circumferentially distributed on the ring gear 28 in an array manner, and the length of each group of fluid channels 19 extends along the radial direction of the ring gear 28; the suction and ejection port 20 of each of the fluid passages 19 is located at the tip of the tooth 26 of the low-temperature carbon dioxide ejection gear 28; two guide wheels 1 which are distributed left and right are arranged on one side of the transverse linear rack 31, which is far away from the annular gear 28, the axes of the two guide wheels 1 are vertical, and the two guide wheels 1 are in rolling fit with the back side surface of the transverse linear rack 31; the wheel shafts 35 of the two guide wheels 1 are rotatably arranged on the guide wheel bracket 140 through bearings, and the guide wheel bracket 34 is fixed on the second bearing seat 133; the fire-proof flexible pipe comprises a flexible pipe 107 made of fire-proof materials, wherein a first pipe orifice 107.1 and a second pipe orifice 107.2 are respectively arranged at two ends of the flexible pipe 107; the first orifice 107.1 of the flexible pipe 107 is communicated with one end of the diversion channel 777 far away from the communicating bin 105; the second orifice 107.2 of the flexible tube 107 communicates with the core chamber 29.
A traveling wheel driving motor 136 is also fixedly arranged on the guide wheel bracket 34; an output shaft 137 of the travelling wheel driving motor 136 is in driving connection with a roller shaft of the travelling wheel 106; the central angle of the fan-shaped annular air distribution notch 18 is set to be smaller than 60 degrees, so that the inlet of at most one fluid channel 19 is ensured to be communicated with the fan-shaped annular air distribution notch 18, and the inlet of the fluid channel 19 which is not communicated with the fan-shaped annular air distribution notch 18 is blocked by the outer ring surface 36 of the air distribution disc 37;
in the specific design process, when any one of the electrical units 24 is located right in front of the ring gear 28, only by grasping the distance and the dimensional relationship between the adjacent electrical units 24, one of the six fluid passages 19 is communicated with the fan-shaped annular matching notch 18, and the jet flow ejected from the suction and ejection port 20 of the one fluid passage 19 communicated with the fan-shaped annular matching notch 18 can be ejected to the middle of the electrical unit 24 right in front.
The two working states and working processes of the device and the working principle are as follows:
the working method of the automatic electric control cabinet of the electric locomotive comprises the following steps:
the working method when the electric locomotive control cabinet 50 normally operates comprises the following steps:
in the initial state, the fan-shaped annular air distribution notch 18 on each emergency cooling unit 130 is just communicated with one fluid channel 19; when the electric units 24 in the electric locomotive control cabinet 50 normally operate, heat is continuously and slowly transferred to the nearby places and is accumulated in the cabinet chamber 42; at this time, the centrifugal exhaust fan 127 is controlled to enable the gas channel in the vertical gas column 100 to form negative pressure, and the negative pressure in the gas channel in the vertical gas column 100 is transmitted into the core bin 29 on each emergency cooling unit 130 through each flow guide channel 777 and the flexible pipe 107; the negative pressure in the core bin 29 is transmitted to the fluid channel 19 communicated with the fan-shaped air distribution gap 18 through the fan-shaped air distribution gap 18, and the suction ejection outlet 20 forms negative pressure; so that each emergency cooling unit 130 has a suction and ejection port 20 of the fluid channel 19 to continuously suck the hot air at the position under the action of negative pressure; therefore, the hot air near each group of electrical unit set 000 in the control cabinet 50 of the electric locomotive is continuously sucked away by the suction and ejection port 20 at the position, and finally the hot air in the control cabinet 50 of the electric locomotive is discharged to the outside through the air outlet end 128 of the centrifugal exhaust fan 127; meanwhile, relatively cold external air is continuously supplemented downwards into the electric locomotive control cabinet 50 through a plurality of ventilating meshes 124 distributed on a top wall body 126 of the locomotive control cabinet 50 in an array manner; further realizing the effect of active heat dissipation;
emergency operation method in case of overheating of any one of the electrical units 24 in the control cabinet 50 of the electric locomotive:
when the temperature sensor at the location of one of the electrical units 24 in a group of electrical unit sets 000 detects that the temperature at the location has exceeded a predetermined value; at this time, the first valve 888 on the negative pressure pipe 125 is closed rapidly; the second valve 121 on the carbon dioxide conduit 122 is now controlled to open; at this time, the carbon dioxide in the liquid carbon dioxide tank 120 is flushed into the gas channel in the vertical gas column 100 through the carbon dioxide conduit 122 in the form of low-temperature carbon dioxide gas and forms positive pressure filled with carbon dioxide, and the high-pressure carbon dioxide in the gas channel in the vertical gas column 100 is pressed into the core bin 29 on each emergency cooling unit 130 through each diversion channel 777 and the flexible pipe 107; the high-pressure low-temperature carbon dioxide in the core bin 29 is extruded into the fluid channel 19 communicated with the fan-shaped annular gas distribution gap 18 through the fan-shaped annular gas distribution gap 18 and is ejected out from the ejection hole 20 in the form of low-temperature carbon dioxide gas; so that each emergency cooling unit 130 has a suction nozzle 20 of the fluid passage 19 for spraying carbon dioxide; therefore, carbon dioxide gas is continuously injected into the position where each group of electrical unit set 000 in the control cabinet 50 of the electric locomotive is located, and since the density of the carbon dioxide is higher than that of air, the cabinet chamber 42 of the whole control cabinet 50 of the electric locomotive is quickly and uniformly filled with the carbon dioxide, so that all the electrical units 24 in the control cabinet 50 of the electric locomotive are isolated from oxygen on the whole, and the phenomenon of global flame retardance is realized;
marking an overheated state of the electrical unit 24 identified by the temperature sensor as an overheated electrical unit 24.1;
although the global flame retardant effect is achieved at present, the overheated electrical unit 24.1 is likely to be still in the energized state, and the overheated state of the overheated electrical unit 24.1 is still not released; at this time, in order to ensure that the train staff has certain emergency preparation time, the overheated electric unit 24.1 cannot be immediately powered off; therefore, the overheating electrical unit 24.1 needs to be cooled down separately and emergently;
at this time, the traveling wheel driving motors 136 of all the emergency cooling units 130 are controlled simultaneously, so that each traveling wheel 106 travels along the length direction of the transverse linear rack 31, and further each ring gear 28 and the transverse linear rack 31 perform meshing motion, so that each ring gear 28 rotates along the axis thereof, and according to the transmission relationship, the air distribution disc 37 does not rotate along the axis along with the ring gear 28, so that the inner ring wall surface 2 of the ring gear 28 and the outer ring surface 36 of the air distribution disc 37 slide, and when the outer ring surface 36 of each air distribution disc 37 blocks all the fluid channels 19, all the traveling wheel driving motors 136 are halted; at this time, all the emergency cooling units 130 are made to temporarily stop injecting carbon dioxide;
recording a group of electrical unit set 000 where the overheated electrical unit 24.1 is located as a target electrical unit set;
then, the traveling wheel driving motor 136 of the emergency cooling unit 130 corresponding to the target electrical unit set is controlled independently, and the traveling wheel 106 is made to slowly travel along the length direction of the transverse linear rack 31, so as to drive the ring gear 28 to move along the length direction of the transverse linear rack 31, meanwhile, the ring gear 28 and the transverse linear rack 31 do the meshing motion, and the air distribution disc 37 does not rotate along the axis along with the ring gear 28, when the ring gear 28 moves along the length direction of the transverse linear rack 31, once the overheating electrical unit 24.1 is just right in front of the ring gear 28, the traveling wheel driving motor 136 is halted, at this time, the fan-shaped air distribution notch 18 just communicates with one fluid channel 19, at this time, the elevation angle adjusting shaft 129 is controlled to rotate, so as to adjust the injection elevation angle of the suction and ejection port 20 of one fluid channel 19 communicated with the fan-shaped air distribution notch 18 (as shown in fig. 8), the low-temperature carbon dioxide jet ejected by the suction ejection port 20 of one fluid channel 19 communicated with the fan-shaped annular air distribution gap 18 is just ejected to the middle part of the overheating electric unit 24.1; thereby realizing the independent high-intensity emergency cooling of the overheated electric unit 24.1;
at this time, the road wheel driving motor 136 is controlled to make the road wheels 106 rotate forwards and backwards periodically, so that the ring gear 28 is made to rotate periodically in positive and negative directions under the action of meshing transmission, the maximum rotation angle of the periodic positive and negative rotation of the ring gear 28 is not more than the central angle of the sector annular gas distribution notch 18, so that in the process of making the ring gear 28 rotate forward and backward periodically, the fluid channel 19 corresponding to the suction and ejection port 20 which is ejecting carbon dioxide is always communicated with the fan-shaped air distribution notch 18, and the injection angle of the suction ejection port 20 that is injecting the carbon dioxide is periodically inclined leftward and rightward, so that the suction and ejection holes 20 are ejected to the overheating electric unit 24.1 in a mode of periodically sweeping left and right, so that the ejected low-temperature carbon dioxide covers the overheating electric unit 24.1 completely, and is not sprayed to the middle area of the overheating electric unit 24.1; thereby enhancing the emergency cooling uniformity of the overheated electrical unit 24.1.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. Electric locomotive's automatic electric control cabinet, its characterized in that: the electric locomotive control cabinet comprises an electric locomotive control cabinet (50), wherein a vertical gas column (100) is arranged in the middle of a cabinet bin (42) of the electric locomotive control cabinet (50), and a vertical gas channel is arranged inside the vertical gas column (100); a plurality of emergency cooling units (130) are distributed on both sides of the vertical gas column (100) in an equidistant array along the vertical direction;
when the electric locomotive control cabinet (50) normally works, each emergency cooling unit (130) can absorb hot air at the position of the emergency cooling unit and converge the hot air into a gas channel in the vertical gas column (100);
when the electric locomotive control cabinet (50) is overheated, each emergency cooling unit (130) can spray low-temperature carbon oxide.
2. The automated electric control cabinet of an electric locomotive according to claim 1, characterized in that: a centrifugal exhaust fan (127) is fixedly installed outside the electric locomotive control cabinet (50), and an air inlet of the centrifugal exhaust fan (127) is communicated with an internal gas channel of the vertical gas column (100) through a negative pressure pipe (125); and the air outlet end (128) of the centrifugal exhaust fan (127) is communicated with the outside.
3. The automated electric control cabinet of an electric locomotive according to claim 2, characterized in that: the negative pressure pipe (125) is provided with a first valve (888).
4. The automated electric control cabinet of an electric locomotive according to claim 3, characterized in that: a plurality of ventilating meshes (124) are distributed on the top wall body (126) of the electric locomotive control cabinet (50) in an array manner.
5. The automated electric control cabinet of an electric locomotive according to claim 4, characterized in that: the device also comprises a liquid carbon dioxide tank (120) fixedly arranged outside the electric locomotive control cabinet (50), wherein the carbon dioxide leading-out end of the liquid carbon dioxide tank (120) is communicated with the internal gas channel of the vertical gas column (100) through a carbon dioxide guide pipe (122); the carbon dioxide conduit (122) is provided with a second valve (121).
6. The automated electric control cabinet of an electric locomotive according to claim 5, characterized in that: a plurality of electric units (24) are distributed on two sides of a vertical air column (100) in a cabinet bin (42) of the electric locomotive control cabinet (50) in a rectangular array manner, a temperature sensor is arranged at the position of each electric unit (24), and the electric units (24) are fixedly arranged on an electric part support (75); recording each adjacent three transverse rows of electrical units (24) as an electrical unit set (000), wherein each electrical unit set (000) corresponds to one emergency cooling unit (130); the emergency cooling unit (130) can spray low-temperature carbon dioxide to any one of the electric units (24) in the corresponding electric unit set (000).
7. The automated electric control cabinet of an electric locomotive according to claim 5, characterized in that: three horizontal rows of electric units (24) on the electric unit set (000) are respectively marked as a first horizontal row of electric units (024), a second horizontal row of electric units (0024) and a third horizontal row of electric units (00024) from top to bottom; the emergency cooling unit (130) corresponding to the electrical unit set (000) comprises a transverse straight rack (31) which is as high as a second transverse row of electrical units (0024); one side of the toothed body of the transverse linear rack (31) faces the second transverse row of electric units (0024); one end, close to the vertical gas column (100), of the transverse linear rack (31) is integrally connected with a hollow rotary communicating column (104) along the length direction, a communicating bin (105) which is communicated along the axis direction is arranged in the hollow rotary communicating column (104), the emergency cooling unit (130) further comprises a hard communicating cylinder (102) which is fixed on the side wall of the vertical gas column (100), and the hard communicating cylinder (102) and the communicating column (104) are coaxially and rotatably sleeved through a sealing bearing (103); a communicating bin (105) in the communicating column (104) is communicated with a gas channel in the vertical gas column (100) through the hard communicating cylinder (102); an elevation angle adjusting shaft (129) is integrally connected to one end, far away from the vertical air column (100), of the transverse linear rack (31), and the elevation angle adjusting shaft (129) and the hollow rotary communication column (104) are coaxial; the emergency cooling unit (130) further comprises a motor support (111) fixed on the side of the electric locomotive control cabinet (50), an elevation angle adjusting motor (110) is fixedly mounted on the motor support (111), and the elevation angle adjusting motor (110) can drive an elevation angle adjusting shaft (129) to rotate; a flow guide channel (777) is arranged in the transverse linear rack (31) along the length direction; one end of the flow guide channel (777) is communicated with the communicating bin (105), and the other end of the flow guide channel (777) extends to the middle position of the transverse linear rack (31) along the length direction.
8. The automated electric control cabinet of an electric locomotive according to claim 7, characterized in that: the emergency cooling unit (130) corresponding to the electric unit set (000) further comprises a travelling wheel (106) with the axis vertical to the transverse linear rack (31), and the travelling wheel (106) is in rolling fit with the upper side (31.1) of the transverse linear rack (31); two roller shafts which are integrally and coaxially connected with two ends of the walking wheel (106) are respectively in running fit with the first bearing seat (132) and the second bearing seat (133) through bearings; the first bearing seat (132) and the second bearing seat (133) are fixedly connected through a connecting frame (135); the emergency cooling unit (130) further comprises a ring gear (28), and the ring gear (28) is meshed with the transverse linear rack (31); the gas distribution device also comprises a gas distribution disc (37) which is coaxial with the annular gear (28), wherein an outer ring surface (36) of the gas distribution disc (37) is in sliding fit with the inner wall surface (2) of the ring body of the annular gear (28); one end of the air distribution disc (37) is coaxially and integrally provided with a fixed shaft (139); the outer wall of the fixed shaft (139) is in rotating fit with the inner wall surface (2) of the ring body of the annular gear (28) through a second sealing bearing (131); one side of the edge of the outline of one end of the air distribution disc (37), which is close to the fixed shaft (139), which is close to the second transverse row electrical unit (0024) is provided with a fan-shaped annular air distribution notch (18), and the fan-shaped circle center of the fan-shaped annular air distribution notch (18) is positioned on the axis of the air distribution disc (37); a core bin (29) is arranged at the axle center of one end of the air distribution disc (37) close to the fixed shaft (139); the core bin (29) is communicated with one end, close to the circle center, of the fan-shaped air distribution notch (18);
the first bearing seat (132) is fixedly connected with the end part of the fixed shaft (139) through a connecting arm (138);
six fluid channels (19) are distributed on the annular gear (28) in a circumferential array, and the length of each group of fluid channels (19) extends along the radial direction of the annular gear (28); the suction and ejection outlet (20) of each fluid channel (19) is arranged at the tooth tip of a tooth body (26) on the low-temperature carbon dioxide injection gear (28); two guide wheels (1) which are distributed left and right are arranged on one side, away from the annular gear (28), of the transverse linear rack (31), the axes of the two guide wheels (1) are vertical, and the two guide wheels (1) are in rolling fit with the back side face of the transverse linear rack (31); the wheel shafts (35) of the two guide wheels (1) are rotatably arranged on a guide wheel bracket (140) through bearings, and the guide wheel bracket (34) is fixed on the second bearing seat (133); the fire-proof flexible pipe is characterized by further comprising a flexible pipe (107) made of a fire-proof material, wherein a first pipe orifice (107.1) and a second pipe orifice (107.2) are respectively arranged at two ends of the flexible pipe (107); the first pipe orifice (107.1) of the flexible pipe (107) is communicated with one end of the flow guide channel (777) far away from the communicating bin (105); the second orifice (107.2) of the flexible tube (107) is communicated with the core bin (29).
9. The automated electric control cabinet of an electric locomotive according to claim 8, wherein: a travelling wheel driving motor (136) is also fixedly arranged on the guide wheel bracket (34); an output shaft (137) of the travelling wheel driving motor (136) is in driving connection with a roller shaft of the travelling wheel (106); setting the central angle of the fan-shaped air distribution notch (18) to be less than 60 degrees, so as to ensure that the inlet of at most one fluid channel (19) is communicated with the fan-shaped air distribution notch (18), and the inlet of the fluid channel (19) which is not communicated with the fan-shaped air distribution notch (18) is blocked by the outer ring surface (36) of the air distribution disc (37);
when any one electric unit (24) is positioned right in front of the ring gear (28), one fluid passage (19) of the six fluid passages (19) is communicated with the fan-shaped annular matching notch (18), and jet flow jetted out of the suction and ejection port (20) of the fluid passage (19) communicated with the fan-shaped annular matching notch (18) can be just ejected to the middle part of the electric unit (24) right in front.
10. The method of operating an automated electric control cabinet for an electric locomotive according to claim 9, wherein:
the working method when the electric locomotive control cabinet (50) normally operates comprises the following steps:
in an initial state, the fan-shaped annular air distribution notch (18) on each emergency cooling unit (130) is just communicated with one fluid channel (19); when each electric unit (24) in the electric locomotive control cabinet (50) runs normally, heat is continuously and slowly transferred to the nearby place and is accumulated in the cabinet bin (42); controlling a centrifugal exhaust fan (127) to enable a gas channel in the vertical gas column (100) to form negative pressure, and transmitting the negative pressure in the gas channel in the vertical gas column (100) to a core bin (29) on each emergency cooling unit (130) through each flow guide channel (777) and a flexible pipe (107); the negative pressure in the core bin (29) is transmitted to a fluid channel (19) communicated with the fan-shaped air distribution gap (18) through the fan-shaped air distribution gap (18) and enables the suction ejection hole (20) to form negative pressure; so that each emergency cooling unit (130) is provided with a suction and ejection port (20) of the fluid channel (19) to continuously suck away the hot air at the position under the action of negative pressure; therefore, the hot air near each group of electrical unit set (000) in the control cabinet (50) of the electric locomotive is continuously sucked away by the suction and ejection port (20) at the position, and finally the hot air in the control cabinet (50) of the electric locomotive is discharged to the outside through the air outlet end (128) of the centrifugal exhaust fan (127); meanwhile, relatively cold air outside continuously downwards replenishes the electric locomotive control cabinet (50) through a plurality of ventilating meshes (124) distributed on the top wall body (126) of the locomotive control cabinet (50) in an array manner; further realizing the effect of active heat dissipation;
method for emergency operation in case of overheating of any electrical unit (24) in a control cabinet (50) of an electric locomotive:
when the temperature sensor at the position of one electric unit (24) in one group of electric unit set (000) detects that the temperature at the position exceeds a preset value; at this time, the first valve (888) on the negative pressure pipe (125) is closed rapidly; controlling a second valve (121) on the carbon dioxide conduit (122) to open; then, the carbon dioxide in the liquid carbon dioxide tank (120) flows into a gas channel in the vertical gas column (100) through a carbon dioxide guide pipe (122) in the form of low-temperature carbon dioxide gas and forms positive pressure filled with the carbon dioxide, and the high-pressure carbon dioxide in the gas channel in the vertical gas column (100) is pressed into the core bin (29) on each emergency cooling unit (130) through each flow guide channel (777) and the flexible pipe (107); high-pressure low-temperature carbon dioxide in the core bin (29) is extruded into a fluid channel (19) communicated with the fan-shaped annular gas distribution gap (18) through the fan-shaped annular gas distribution gap (18) and is ejected from an ejection hole (20) in a low-temperature carbon dioxide gas mode; so that each emergency cooling unit (130) is provided with a suction jet outlet (20) of the fluid channel (19) to jet carbon dioxide; therefore, carbon dioxide gas is continuously sprayed into the position of each group of electrical unit set (000) in the electric locomotive control cabinet (50), and the density of the carbon dioxide is higher than that of air, so that the cabinet bin (42) of the whole electric locomotive control cabinet (50) is uniformly filled with the carbon dioxide, all electrical units (24) in the electric locomotive control cabinet (50) are isolated from oxygen on the whole, and the phenomenon of global flame retardance is realized;
recording an overheated state of the electrical unit (24) identified by the temperature sensor as an overheated electrical unit (24.1);
although the global flame-retardant effect is achieved at present, the overheated electric unit (24.1) is likely to be in an electrified state, and the overheated state of the overheated electric unit (24.1) is not released; in order to ensure that the train staff have certain emergency preparation time, the overheated electric unit (24.1) cannot be immediately powered off; therefore, the overheating electric unit (24.1) needs to be cooled down separately and emergently;
at the moment, the travelling wheel driving motors (136) of all the emergency cooling units (130) are controlled simultaneously, each travelling wheel (106) travels along the length direction of the transverse linear rack (31), and each annular gear (28) and the transverse linear rack (31) are engaged to move, so that each annular gear (28) rotates along the axis of the annular gear, and according to the transmission relation, the air distribution disc (37) cannot rotate along the axis along with the annular gear (28), so that the inner wall surface (2) of the ring body of the annular gear (28) and the outer ring surface (36) of the air distribution disc (37) slide, and when the outer ring surface (36) of each air distribution disc (37) blocks all the fluid channels (19), all the travelling wheel driving motors (136) are stopped; at this time, all the emergency cooling units (130) are suspended from spraying carbon dioxide;
recording a group of electrical unit sets (000) where the overheated electrical unit (24.1) is as a target electrical unit set;
then independently controlling a traveling wheel driving motor (136) of an emergency cooling unit (130) corresponding to the target electric unit set at once, enabling the traveling wheel (106) to slowly travel along the length direction of a transverse linear rack (31) so as to drive a ring-shaped gear (28) to move along the length direction of the transverse linear rack (31), meanwhile, the ring-shaped gear (28) and the transverse linear rack (31) do meshing motion, a gas distribution disc (37) does not rotate along the axial line along with the ring-shaped gear (28), when the ring-shaped gear (28) moves along the length direction of the transverse linear rack (31), once an overheated electric unit (24.1) is just right in front of the ring-shaped gear (28), suspending the traveling wheel driving motor (136), and at the moment, a fan-shaped gas distribution notch (18) just communicates with a fluid channel (19), and controlling the rotation of an elevation angle adjusting shaft (129), thereby adjusting the jet elevation angle of the suction and ejection port (20) of one fluid channel (19) communicated with the fan-shaped air distribution gap (18) to ensure that the low-temperature carbon dioxide jet ejected by the suction and ejection port (20) of one fluid channel (19) communicated with the fan-shaped air distribution gap (18) just shoots to the middle part of the overheating electrical unit (24.1); thereby realizing the independent high-intensity emergency cooling of the overheated electric unit (24.1);
at the moment, a travelling wheel driving motor (136) is controlled to make the travelling wheel (106) rotate forwards and backwards periodically, so that the ring gear (28) rotates forwards and backwards periodically under the action of meshing transmission, the maximum rotation angle of the ring gear (28) rotating forwards and backwards periodically does not exceed the central angle of the fan-shaped annular gas distribution notch (18), so that in the process of making the ring gear (28) rotate forwards and backwards periodically, a fluid channel (19) corresponding to a suction and ejection port (20) ejecting carbon dioxide is always communicated with the fan-shaped annular gas distribution notch (18), the ejection angle of the suction and ejection port (20) ejecting carbon dioxide can incline leftwards and rightwards periodically, so that the suction and ejection port (20) ejects carbon dioxide to the overheating electric unit (24.1) in a mode of sweeping periodically leftwards and rightwards, and the ejected low-temperature carbon dioxide covers the overheating electric unit (24.1) completely, instead of only towards the central region of the overheated electrical unit (24.1); thereby enhancing the emergency cooling uniformity of the overheated electrical unit (24.1).
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