CN113153689A - Wind source device for railway vehicle and working state monitoring method thereof - Google Patents

Wind source device for railway vehicle and working state monitoring method thereof Download PDF

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Publication number
CN113153689A
CN113153689A CN202110527370.0A CN202110527370A CN113153689A CN 113153689 A CN113153689 A CN 113153689A CN 202110527370 A CN202110527370 A CN 202110527370A CN 113153689 A CN113153689 A CN 113153689A
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CN
China
Prior art keywords
wind
air
source device
time
railway vehicle
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Pending
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CN202110527370.0A
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Chinese (zh)
Inventor
张建海
蔡田
孟红芳
王群伟
裴正武
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China Academy of Railway Sciences Corp Ltd CARS
Locomotive and Car Research Institute of CARS
Beijing Zongheng Electromechanical Technology Co Ltd
Tieke Aspect Tianjin Technology Development Co Ltd
Original Assignee
China Academy of Railway Sciences Corp Ltd CARS
Locomotive and Car Research Institute of CARS
Beijing Zongheng Electromechanical Technology Co Ltd
Tieke Aspect Tianjin Technology Development Co Ltd
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Application filed by China Academy of Railway Sciences Corp Ltd CARS, Locomotive and Car Research Institute of CARS, Beijing Zongheng Electromechanical Technology Co Ltd, Tieke Aspect Tianjin Technology Development Co Ltd filed Critical China Academy of Railway Sciences Corp Ltd CARS
Priority to CN202110527370.0A priority Critical patent/CN113153689A/en
Publication of CN113153689A publication Critical patent/CN113153689A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/16—Filtration; Moisture separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates to an air source device for a railway vehicle and a working state monitoring method thereof. The invention solves the technical problems of large workload and poor effect of preventing and controlling the emulsification of lubricating oil by the wind source device for the rail vehicle.

Description

Wind source device for railway vehicle and working state monitoring method thereof
Technical Field
The invention relates to the technical field of rail transit, in particular to a wind source device for a rail vehicle and a working state monitoring method thereof.
Background
The wind source device is a key device for supplying wind to the railway vehicle, and the generated compressed air can be used for devices such as a brake control system, a pantograph lifting control system, an air spring system and the like of the railway vehicle. The performance and quality of the wind source device directly affect the normal work and the driving safety of each wind equipment of the vehicle.
At the present stage, the problem of lubricating oil emulsification is a common problem in the application process of an air source device, and generally occurs in the working conditions that the air consumption of vehicles is low, and the working environment is high in temperature and humidity, such as the debugging period and the initial operation period of a railway vehicle. If the problem is not timely treated after the occurrence, the surface of a screw rotor of the railway vehicle can not form an oil film, the lubrication and the sealing in the air compression process are affected, the problems of surface profile abrasion, air displacement reduction and the like of the screw rotor are caused, and even serious people cause the faults of damage of a screw set bearing, burning of a motor and the like, so that the driving safety is endangered. In addition, in order to ensure that the amount of lubricating oil in the compressor is proper, the lubricating oil is not added more or is not lack of oil, and the amount of lubricating oil needs to be manually checked during daily inspection or weekly inspection of the vehicle.
As shown in fig. 1, the conventional wind source device starts the wind source device to circularly operate for 30 minutes and then stops the wind source device by using the principle that the conventional wind source device can increase the oil temperature in a circulating operation state but does not supply wind to the downstream, and only when a vehicle is activated and has a zero-speed signal every day; if no other vehicle is activated and no speed signal exists, the wind source device does not enter the circulation state any more.
However, this method has the following disadvantages:
firstly, in the existing scheme, when the air source device is in a circulating operation state, air entering the air inlet valve main body 100 and participating in compression comes from outside air or air flowing back to the air inlet of the air inlet valve main body 100 through the bypass pipeline 200, the air is not dried, and the moisture contained in the air is not reduced, so that in the circulating operation process, the absorption speed of the air on the moisture in the lubricating oil is slow, and the air needs to be circulated for a long time to achieve a good anti-emulsification effect.
Secondly, for the emulsified lubricating oil, in the existing technical scheme, because air is not dried, the absorption speed of the air to the moisture in the lubricating oil is slow, the air is not suitable for eliminating the emulsification in a circulating operation mode, a main air pipeline valve (or an air cylinder valve) needs to be opened to exhaust the air to the outside, the air source device is started after the total air pressure is reduced to the starting pressure of the air source device, and the emulsification problem is eliminated in a continuous operation mode in a normal air supply mode. The process is complex to operate, noise is large when air is exhausted outwards in a normal air supply state, noise pollution is generated, and normal work of workshop workers is affected.
Because the existence of above-mentioned problem, the work of present wind regime device lubricated oil mass inspection still generally relies on artifical inspection, and this work is not only work load big, has artifical inspection untimely moreover, does not in time discover the risk that lubricating oil lacks the problem. In addition, in order to eliminate the adverse effect that lubricating oil emulsification caused, reciprocating piston formula does not have oily wind regime device and begins to use in the rail transit field gradually in recent years, and although reciprocating piston formula does not have oily wind regime device and has fundamentally solved the emergence of lubricating oil emulsification phenomenon, nevertheless if wind regime device operating ratio is not enough to cause after liquid water precipitates, still have great hidden danger to the steady operation of wind regime device: when the reciprocating piston type oilless air compressor is low in work rate and liquid water is separated out, powder generated by friction of the self-lubricating piston ring and the wall of the piston cylinder cannot be discharged in time, the self-lubricating piston ring and the wall of the piston cylinder are bonded together under the action of water and attached to the wall of the piston cylinder, and in the working process of the air compressor, dust particles can scratch the wall of the cylinder or the piston ring, so that the frictional wear environment of the original self-lubricating piston ring and the wall of the cylinder is damaged, the leakage is increased, the air supply is insufficient, and the service life is shortened.
Aiming at the problems of large workload and poor effect of preventing and controlling the emulsification of lubricating oil by using an air source device for a railway vehicle in the related art, an effective solution is not provided at present.
Therefore, the inventor provides the wind source device for the railway vehicle and the working state monitoring method thereof by virtue of experience and practice of related industries for many years, so as to overcome the defects of the prior art.
Disclosure of Invention
The invention aims to provide an air source device for a railway vehicle and a working state monitoring method thereof, which can circularly compress air for multiple times through a compressor, can quickly improve the oil temperature in a circular operation mode, takes away the water in lubricating oil, and effectively achieves the effects of preventing and eliminating the emulsification of the lubricating oil.
Another object of the present invention is to provide an air source device for a rail vehicle and a method for monitoring the operating condition thereof, which can prevent and eliminate the emulsification of the lubricating oil, and simultaneously, can not generate noise pollution, can not reduce the ability of the air source device to supply air to the vehicle, ensure the normal and stable operation of the air supply device, and prolong the service life.
The purpose of the invention can be realized by adopting the following technical scheme:
the invention provides an air source device for a railway vehicle, which comprises an air inlet device, a compressor and an air drying and purifying device, wherein:
the air inlet device is characterized in that an air source is connected to a first air inlet of the air inlet device, an air outlet of the air inlet device is connected with a low-pressure air inlet of the compressor, a high-pressure air outlet of the compressor is connected with an air inlet of the air drying and purifying device, an air outlet of the air drying and purifying device is connected into a downstream main air pipeline, a circulating pipeline is externally connected between the air outlet of the air drying and purifying device and the downstream main air pipeline, the circulating pipeline is connected with a second air inlet of the air inlet device, and an electromagnetic valve is arranged on the circulating pipeline.
In a preferred embodiment of the present invention, in a power-off state of the electromagnetic valve, the external air sequentially flows into the compressor through the first air inlet of the air intake device and the air outlet of the air intake device to be compressed, the compressed air enters the air drying and purifying device to be dried and purified, a part of the compressed air containing impurities is discharged to the outside, and the other part of the clean compressed air flows into the downstream main air pipeline.
In a preferred embodiment of the present invention, when the electromagnetic valve is electrically conducted, the external air sequentially flows into the compressor through the first air inlet of the air inlet device and the air outlet of the air inlet device to be compressed, the compressed air enters the air drying and purifying device to be dried and purified, a portion of the compressed air containing impurities is discharged to the outside, and another portion of the clean compressed air flows back through the circulation pipeline and sequentially flows into the compressor through the second air inlet of the air inlet device and the air outlet of the air inlet device.
In a preferred embodiment of the present invention, in the power-on state of the electromagnetic valve, the amount of the outside air entering the first air inlet of the air intake device per unit time is smaller than the amount of the outside air entering the first air inlet of the air intake device per unit time in the power-off state of the electromagnetic valve.
In a preferred embodiment of the present invention, the air intake device includes a silencer and an air intake valve, an air outlet of the silencer is connected to an air inlet of the air intake valve, two air inlets provided on the silencer are a first air inlet and a second air inlet of the air intake device, and an air outlet of the air intake valve is an air outlet of the air intake device.
In a preferred embodiment of the present invention, the air source device for a rail vehicle further includes an air filter for filtering solid impurities in the air, the air filter is disposed upstream of the air inlet device, an air inlet of the air filter is connected to the air source, and an air outlet of the air filter is connected to the first air inlet of the air inlet device.
In a preferred embodiment of the present invention, the wind source device for a rail vehicle further includes a controller, a moisture sensor for detecting a moisture content in the oil-gas barrel and a first liquid level sensor for detecting an oil level in the oil-gas barrel are disposed in the oil-gas barrel of the compressor, a detection signal output end of the moisture sensor and a detection signal output end of the first liquid level sensor are electrically connected to a detection signal receiving end of the controller, respectively, and a control signal output end of the controller is electrically connected to a control end of the electromagnetic valve.
In a preferred embodiment of the present invention, a cooler is disposed between the high-pressure air outlet of the compressor and the air inlet of the air drying and purifying device, a second liquid level sensor for detecting an oil level in the cooler is disposed inside the cooler, and a detection signal output end of the second liquid level sensor is electrically connected to a detection signal receiving end of the controller.
In a preferred embodiment of the present invention, a safety valve is disposed between the high pressure air outlet of the compressor and the air inlet of the cooler, and a control end of the safety valve is electrically connected to the control signal output end of the controller.
In a preferred embodiment of the present invention, the air outlet of the cooler is connected to the air inlet of the air drying and purifying device through a hose.
In a preferred embodiment of the present invention, the air drying and purifying device includes a pre-filter, a double-tower dryer, and a post-filter, and the pre-filter, the double-tower dryer, and the post-filter are connected in series in a flow direction of the air.
In a preferred embodiment of the present invention, a first overflow valve is disposed on the downstream main air pipeline, and the first overflow valve is located downstream of a connection position of the downstream main air pipeline and the circulation pipeline;
the opening pressure of the first overflow valve meets the following conditions:
Pmeasuring≤POverflow 1＜POpener 2；
Wherein, the PMeasuringThe lowest pressure required for monitoring the working state of the double towers in the double-tower dryer; the P isOverflow 1The opening pressure of the first overflow valve; the P isOpener 2The total wind pressure when two wind source devices in the railway vehicle are started simultaneously.
In a preferred embodiment of the present invention, a second overflow valve or a throttle valve is disposed on the circulation pipeline, and the conditions required to open the second overflow valve are the same as the conditions required to open the throttle valve;
the opening pressure of the second overflow valve meets the following conditions:
PAD≤Poverflow 2＜PStop block；
Wherein, the PADThe pressure required by the normal working state of the double-tower dryer; the P isOverflow 2The opening pressure of the second overflow valve; the P isStop blockThe total wind pressure when the wind source device stops supplying wind.
The invention provides a method for monitoring the working state of an air source device for a railway vehicle, which is suitable for the air source device for the railway vehicle, and comprises the following steps:
step S1: monitoring the total wind pressure in a total wind pipeline of the railway vehicle in real time;
step S2: comparing the total wind pressure with a first total wind pressure when two wind source devices for the rail vehicles in the rail vehicles are started simultaneously and a second total wind pressure when any one wind source device for the rail vehicles in the rail vehicles is started independently;
step S3: if the total wind pressure is smaller than the first total wind pressure, the two wind source devices for the railway vehicle are started simultaneously to enter a normal wind supply mode until the total wind pressure is equal to the total wind pressure when the wind source devices for the railway vehicle stop supplying wind;
if the total wind pressure is greater than or equal to the first total wind pressure and less than a second total wind pressure, starting one rail vehicle wind source device to enter a normal wind supply mode until the total wind pressure is equal to the total wind pressure when the rail vehicle wind source device stops supplying wind;
and if the total wind pressure is greater than or equal to a second total wind pressure, starting one rail vehicle wind source device to enter a circulating operation mode until the total wind pressure is equal to the total wind pressure when the rail vehicle wind source device stops supplying wind.
In a preferred embodiment of the present invention, in step S3, if the total wind pressure is less than the first total wind pressure, the two rail vehicle wind source devices are simultaneously started to enter a normal wind supply mode until the total wind pressure is equal to the total wind pressure when the rail vehicle wind source devices stop supplying wind, and the operation time of the rail vehicle wind source devices is recorded as a first time;
comparing the first time with a third time, and if the first time is greater than or equal to the third time, stopping the two wind source devices for the railway vehicle; if the first time is less than the third time, one air source device for the railway vehicle is stopped, and the other air source device for the railway vehicle is stopped after entering a circulating operation mode to operate for a fourth time;
wherein the first time is determined by an actual recording time; the third time is self-set time; the fourth time is determined by subtracting the first time from the third time.
In a preferred embodiment of the present invention, in the step S3, if the total wind pressure is greater than or equal to the first total wind pressure and less than a second total wind pressure, one of the rail vehicle wind source devices starts to enter a normal wind supply mode until the total wind pressure is equal to the total wind pressure when the rail vehicle wind source device stops supplying wind, and records the operation time of the rail vehicle wind source device as a second time;
comparing the second time with a third time, and if the second time is greater than or equal to the third time, stopping the wind source device for the railway vehicle; if the second time is less than the third time, the wind source device for the railway vehicle is stopped after entering a circulating operation mode to operate for a fifth time;
wherein the second time is determined by the actual recording time; the third time is self-set time; the fifth time is determined by subtracting the second time from the third time.
In a preferred embodiment of the present invention, in the step S3, if the total wind pressure is greater than or equal to a second total wind pressure, one of the rail vehicle wind source devices is started to enter a cyclic operation mode until the total wind pressure is equal to the total wind pressure when the rail vehicle wind source device stops supplying wind, and the rail vehicle wind source device is stopped after the running time of the rail vehicle wind source device is recorded as a third time;
wherein the third time is a self-set time.
In a preferred embodiment of the present invention, in the step S3, if the rail vehicle air source device needs to supply air to the rail vehicle when the rail vehicle air source device is in the circulation operation mode, the rail vehicle air source device shifts to the normal air supply mode until the total air pressure is equal to the total air pressure when the rail vehicle air source device stops supplying air.
In a preferred embodiment of the present invention, the operation time of the wind source device for the rail vehicle switching to the normal wind supply mode is recorded as a sixth time;
comparing the sixth time with a third time, and if the sixth time is less than the third time, switching the air source device for the railway vehicle into a circulating operation mode again until the continuous operation time of the air source device for the railway vehicle reaches the third time, and stopping the air source device;
wherein the sixth time is determined by the actual recording time.
In a preferred embodiment of the present invention, if the continuous operation time of the wind source device for the rail vehicle reaches a third time, and the wind source device for the rail vehicle is in a circulation operation mode, the wind source device for the rail vehicle is directly stopped; and if the continuous operation time of the wind source device for the railway vehicle reaches a third time, and the wind source device for the railway vehicle is in a normal wind supply mode, the wind source device for the railway vehicle is stopped after supplying wind until the total wind pressure is equal to the total wind pressure when the wind source device for the railway vehicle stops supplying wind.
In a preferred embodiment of the present invention, after the step S3, the method further includes acquiring data of moisture content in the lubricant oil in the oil drum of the compressor by a moisture sensor; if the moisture content is smaller than a preset moisture content threshold value, the wind source device for the railway vehicle keeps a shutdown state; and if the moisture content is greater than or equal to a preset moisture content threshold value, controlling the air source device for the railway vehicle to enter a circulating operation mode, or firstly discharging liquid water in an oil gas barrel of a compressor and then controlling the air source device for the railway vehicle to enter the circulating operation mode.
In a preferred embodiment of the invention, oil level data in a compressor is collected through a first liquid level sensor, and oil level data in a cooler is collected through a second liquid level sensor, so as to obtain the total oil amount of lubricating oil in the air source device for the railway vehicle; and if the total oil amount of the lubricating oil in the wind source device for the railway vehicle is less than a preset lubricating oil content threshold value, supplementing the lubricating oil into the wind source device for the railway vehicle.
From the above, the wind source device for the rail vehicle and the working state monitoring method thereof of the invention have the characteristics and advantages that:
firstly, through the control to the solenoid valve on-off state on the circulation pipeline, both can guarantee that under the normal air feed state of wind regime device, carry the low reaches main wind pipeline smoothly after compressing the outside air and be used for carrying out the air feed to rail vehicle, can be again under the shut down off-load state of wind regime device, return the air after compressing to the compressor through the circulation pipeline and compress in, can promote the oil temperature in the compressor fast in this circulation process, and take away the moisture in the lubricating oil, effectively reach the effect of prevention, elimination lubricating oil emulsification.
Two, air after the compression can pass through air drying purifier purification treatment, filters solid particle, fluid and moisture in the compressed air, reaches the purpose to compressed air purification and drying, and the compressed air after air drying purifier handles can return to and compress once more in the compressor, and then can take away the moisture that exists in the lubricating oil fast, further prevents the emulsification of lubricating oil, promotes the stability and the life of compressor.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.
Wherein:
FIG. 1: is a structural schematic diagram of the prior wind source device in a circulating operation state.
FIG. 2: the invention is a structural schematic diagram of the wind source device for the railway vehicle.
FIG. 3: the invention is one of the structural schematic diagrams of the wind source device for the railway vehicle in a normal wind supply state.
FIG. 4: the invention is one of the structural schematic diagrams of the wind source device for the railway vehicle in a circulating operation state.
FIG. 5: the second schematic structural view of the wind source device for railway vehicles in a normal wind supply state is shown.
FIG. 6: the second schematic structural view of the wind source device for railway vehicles in a circulating operation state is shown.
The reference numbers in the background art are:
100. an intake valve main body; 200. A bypass line.
The reference numbers in the invention are:
1. an air filter; 2. An air intake device;
201. a muffler; 202. An intake valve;
3. a compressor; 4. A safety valve;
5. a cooler; 6. A hose;
7. an air drying and purifying device; 701. A pre-filter;
702. a double-tower dryer; 703. A post-filter;
8. a first overflow valve; 9. A second overflow valve;
10. an electromagnetic valve; 11. A moisture sensor;
12. a first liquid level sensor; 13. A second liquid level sensor;
14. a controller; 15. A throttle valve;
16. a circulation line; 17. A downstream main air line.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
Implementation mode one
As shown in fig. 2 to 4, the present invention provides a wind source device for a railway vehicle, which includes an air intake device 2, a compressor 3, and an air drying and purifying device 7, wherein: the air inlet device 2 is provided with a first air inlet A, a second air inlet B and an air outlet C, the first air inlet A of the air inlet device 2 is connected with an air source (namely, outside air enters through the first air inlet A of the air inlet device 2), the air outlet C of the air inlet device 2 is connected with a low-pressure air inlet of the compressor 3, a high-pressure air outlet of the compressor 3 is connected with an air inlet of the air drying and purifying device 7, an air outlet of the air drying and purifying device 7 is connected with a downstream main air pipeline 17, a circulating pipeline 16 is externally connected between the air outlet of the air drying and purifying device 7 and the downstream main air pipeline 17, the circulating pipeline 16 is connected with the second air inlet B of the air inlet device 2, and the electromagnetic valve 10 is arranged on the circulating pipeline 16.
In the working process, the purpose of controlling the on-off state of the circulating pipeline 16 is achieved by controlling the on-off state of the electromagnetic valve 10, so that the external air can be compressed and smoothly conveyed to the downstream main air pipeline 17 for supplying air to the rail vehicle under the normal air supply state of the air source device, and the compressed air can flow back to the compressor 3 through the circulating pipeline 16 for circulating compression under the stop and unloading state of the air source device, the oil temperature in the compressor 3 can be quickly increased in the circulating process, and the moisture in the lubricating oil is taken away by the compressed air, so that the effects of preventing and eliminating the emulsification of the lubricating oil are effectively achieved. Air after the compression can carry out purification treatment through air drying purifier 7 to filter solid particle, fluid and moisture in the compressed air, reach the purpose to compressed air purification and drying, compressed air after air drying purifier 7 handles can return to and compress once more in compressor 3, and then can take away the moisture that exists in the lubricating oil fast, further prevents the emulsification of lubricating oil, promotes the stability and the life of compressor.
In an alternative embodiment of the present invention, as shown in fig. 2 to 4, the air intake device 2 includes a silencer 201 and an air intake valve 202, the silencer 201 is located upstream of the air intake valve 202, an air outlet of the silencer 201 is connected to an air inlet of the air intake valve 202, two air inlets provided on the silencer 201 are a first air inlet a and a second air inlet B of the air intake device 2, and an air outlet of the air intake valve 202 is an air outlet C of the air intake device 2. When the compressed air circulates in the wind source device, the discharge process of the compressed air in the air intake device 2 can be silenced and denoised by the silencer 201, and the gas discharged from the silencer 201 can quickly enter the air intake valve 202. The drift diameter of the silencer 201 meets the full-displacement requirement of the air source device (namely, the air quantity of the silencer 201 can meet the air supply quantity requirement of the air source device).
In an alternative embodiment of the present invention, as shown in fig. 2 to 4, the wind source device for a rail vehicle further includes an air filter 1, the air filter 1 is disposed upstream of the air intake device 2, an air inlet of the air filter 1 is connected to a source of air, and an air outlet of the air filter 1 is connected to the first air inlet a of the air intake device 2. Dust or other solid impurities in the air are filtered through the air filter 1, the air entering the air source device is guaranteed to have high cleanliness, and the service life of the equipment is prolonged.
In an optional embodiment of the present invention, as shown in fig. 2 to 4, the wind source device for a rail vehicle further includes a controller 14, a moisture sensor 11 and a first liquid level sensor 12 are disposed in the oil gas barrel of the compressor 3, the moisture sensor 11 is configured to monitor moisture content in the lubricating oil in the oil gas barrel in real time, the first liquid level sensor 12 is configured to monitor an oil level in the oil gas barrel in real time, a detection signal output end of the moisture sensor 11 and a detection signal output end of the first liquid level sensor 12 are electrically connected to a detection signal receiving end of the controller 14, respectively, and a control signal output end of the controller 14 is electrically connected to a control end of the electromagnetic valve 10. The controller 14 can receive and store the data collected by the moisture sensor 11 and the first liquid level sensor 12, and control the on-off state of the electromagnetic valve 10, so that the staff can regulate and control the wind source device.
Further, the solenoid valve 10 may be, but is not limited to, a two-position two-way solenoid valve; of course, the solenoid valve 10 may be replaced by a combination of a solenoid valve body and a pneumatic control valve.
Further, as shown in fig. 2 to 4, a cooler 5 is disposed between the high-pressure air outlet of the compressor 3 and the air inlet of the air drying and purifying device 7, an oil cooling chamber and a water cooling chamber are disposed inside the cooler 5, a second liquid level sensor 13 is disposed in the oil cooling chamber, and a detection signal output end of the second liquid level sensor 13 is electrically connected with a detection signal receiving end of the controller 14. The compressed air is at the in-process through cooler 5, and the oil droplet and the water droplet that carry in the compressed air can carry out the condensation separation at oil cooling cavity and water cooling cavity respectively, but through the oil level of the interior lubricating oil of second level sensor 13 real-time supervision oil cooling cavity.
Further, as shown in fig. 2 to 4, a safety valve 4 is disposed between the high-pressure air outlet of the compressor 3 and the air inlet of the cooler 5, and a control end of the safety valve 4 is electrically connected to a control signal output end of the controller 14. When the pressure in the oil gas barrel of the compressor 3 is too high (namely, greater than a preset pressure threshold), the controller 14 controls the action of the safety valve 4 to exhaust the gas outwards, so that the function of protecting equipment is achieved.
Furthermore, as shown in fig. 2 to 4, the air outlet of the cooler 5 is connected with the air inlet of the air drying and purifying device 7 through the hose 6, so that the influence of the vibration of the compressor 3 on the air drying and purifying device 7 can be reduced in the working process, and the stability of the equipment can be improved.
In an alternative embodiment of the present invention, as shown in fig. 2 to 4, the air drying and purifying device 7 includes a pre-filter 701, a double-tower dryer 702, and a post-filter 703, and the pre-filter 701, the double-tower dryer 702, and the post-filter 703 are connected in series in the air flow direction. Liquid water, liquid oil and part of suspension oil, solid particle in to compressed air through leading filter 701 filters, filters most gaseous state water in to compressed air through two tower driers 702, filters most suspension oil, part of gaseous state oil, the most solid particle that produces among the drying process through rearmounted filter 703 to can greatly reduced the compressed air's after air drying purifier 7 handles relative humidity.
In an alternative embodiment of the present invention, as shown in fig. 2 to 4, a first overflow valve 8 is provided on the downstream main air pipe 17, and the first overflow valve 8 is located downstream of the connection position of the downstream main air pipe 17 and the circulation pipe 16. The first overflow valve 8 can play a role in preventing compressed air in a main air pipeline of the vehicle from flowing back; in addition, the pressure required for the operating state of the double towers in the double tower dryer 702 can be preferentially established during the initial charging of the rail vehicle by controlling the first overflow valve 8. The drift diameter of the first overflow valve 8 meets the full-displacement requirement of the air source device (namely, the air quantity of the first overflow valve 8 can meet the air supply quantity requirement of the air source device).
Further, the opening pressure of the first relief valve 8 satisfies the following condition:
Pmeasuring≤POverflow 1＜POpener 2；
Wherein, PMeasuringThe lowest pressure required to monitor the operating conditions of the double columns in the double column dryer 702; pOverflow 1The opening pressure of the first relief valve 8; pOpener 2The total wind pressure when two wind source devices in the railway vehicle are started simultaneously.
In an alternative embodiment of the invention, as shown in fig. 2 to 4, the circulation line 16 is provided with a second relief valve 9. During the air circulation compression process, the pressure required for monitoring the long-term normal working state of the double-tower dryer 702 in the air source device can be established by controlling the second overflow valve 9. The drift diameter of the second overflow valve 9 meets the full-displacement requirement of the air source device (namely, the air quantity of the second overflow valve 9 can meet the air supply quantity requirement of the air source device).
Further, the opening pressure of the second relief valve 9 satisfies the following condition:
PAD≤Poverflow 2＜PStop block；
Wherein, PADThe pressure required for normal operation of the double tower dryer 702; pOverflow 2The opening pressure of the second overflow valve 9; pStop blockThe total wind pressure when the wind source device stops supplying wind.
In another alternative embodiment of the present invention, as shown in fig. 5 and 6, a throttle valve 15 may be used instead of the second overflow valve 9 (i.e. the second overflow valve 9 is not arranged on the circulation pipeline 16, but the throttle valve 15 is arranged), and the aperture of the throttle hole in the throttle valve 15 may be adjusted or replaced to adapt to wind source devices with different displacement. Wherein: the conditions required by opening the second overflow valve 9 are the same as the conditions required by opening the throttle valve 15 (that is, for an air source device with known displacement, the aperture of the throttle hole is required to satisfy the requirements that the pressure required by monitoring the long-term normal operation of the double-tower dryer 702 can be established in the process of circularly compressing air, and the exhaust volume of the throttle hole under the total air pressure when the air source device stops supplying air is larger than the full displacement of the air source device).
The air source device for the railway vehicle can be in two working modes of normal air supply and circulating operation, and specifically comprises the following steps:
and (3) a normal air supply mode: as shown in fig. 3 and 5, the air source device is in a normal air supply state, at this time, the control electromagnetic valve 10 is in a power-off disconnection state, after passing through the air filter 1, the outside air sequentially passes through the first air inlet a of the air inlet device 2 and the air outlet C of the air inlet device 2 and flows into the compressor 3 for compression, and after passing through the cooler 5, the hose 6, the air drying and purifying device 7 and the first overflow valve 8, the compressed air sequentially flows into the downstream main air pipeline 17. Of course, the compressed air flowing into the downstream main air duct 17 is only a part of the compressed air discharged from the compressor 3 (the part is clean compressed air), and the other part of the compressed air (the part is compressed air containing impurities) is discharged to the outside through the air drying and purifying device 7.
And (3) a circulating operation mode: as shown in fig. 4 and 6, the air source device is in an unloading state after being stopped, at this time, the control electromagnetic valve 10 is in an electrically conducting state, after passing through the air filter 1, the outside air sequentially flows into the compressor 3 through the first air inlet a of the air inlet device 2 and the air outlet C of the air inlet device 2 to be compressed, after sequentially passing through the cooler 5, the hose 6, the air drying and purifying device 7, the electromagnetic valve 10 and the second overflow valve 9 (or the throttle valve 15), the compressed air enters the air inlet device 2 again through the second air inlet B of the air inlet device 2, and the compressed air flows into the compressor 3 through the air outlet C of the air inlet device 2 again to be compressed. Of course, the compressed air returned to the circulation line 16 is only a part of the compressed air discharged from the compressor 3 (the part is clean compressed air), and the other part of the compressed air (the part is compressed air containing impurities) is discharged to the outside through the air drying and purifying device 7.
When the air source device operates in the circulation operation mode, the external air still enters the air source device through the air filter 1 and the first air inlet A of the air inlet device 2 to supplement the compressed air discharged by the air drying and purifying device 7, but the external air quantity entering the first air inlet A of the air inlet device 2 per unit time in the power-on state of the electromagnetic valve 10 (namely, in the circulation operation mode) needs to be less than the external air quantity entering the first air inlet A of the air inlet device 2 per unit time in the power-off disconnection state of the electromagnetic valve 10 (namely, in the normal air supply mode).
The wind source device for the railway vehicle has the characteristics and advantages that:
the air source device for the railway vehicle can achieve the purpose of controlling the on-off state of the circulating pipeline 16 by controlling the on-off state of the electromagnetic valve 10, can ensure that the compressed outside air is smoothly conveyed to the downstream main air pipeline 17 for air supply of the railway vehicle in a normal air supply state, and can also ensure that the compressed air flows back to the compressor 3 through the circulating pipeline 16 for cyclic compression in a stop unloading state of the air source device, so that the oil temperature in the compressor 3 can be quickly increased in the circulating process, and the moisture in the lubricating oil is taken away by the compressed air, thereby effectively achieving the effects of preventing and eliminating the emulsification of the lubricating oil.
Two, this air source device for rail vehicle carries out purification treatment through air drying purifier 7 with the air after the compression, with filter the solid particle in the compressed air, fluid and moisture, reach the purpose to compressed air purification and drying, compressed air after air drying purifier 7 handles can return to and compress once more in compressor 3, and then can take away the moisture that exists in the lubricating oil fast, further prevent the emulsification of lubricating oil, promote the stability and the life of compressor.
Second embodiment
The invention provides a method for monitoring the working state of an air source device for a railway vehicle, which is suitable for the air source device for the railway vehicle, and comprises the following steps:
step S1: after the rail vehicle is electrified for the first time every day and the rail vehicle has a zero-speed signal, the total wind pressure P in the total wind pipeline of the rail vehicle is measuredGeneral assemblyCarrying out real-time monitoring;
step S2: total wind pressure PGeneral assemblyRespectively connected with two air source devices for the rail vehicles (namely a main air source device and an auxiliary air source device)Device) first total wind pressure P at simultaneous start-upOpener 2Comparing the second total wind pressure when any one of the wind source devices (the main wind source device or the auxiliary wind source device) for the railway vehicles is independently started;
step S3:
the working condition I is as follows: if total wind pressure PGeneral assemblyLess than the first total wind pressure POpener 2(i.e., P)General assembly＜POpener 2) Then, the two rail vehicle air source devices (i.e.: main wind source device and auxiliary wind source device) are started simultaneously to enter a normal wind supply mode, and wind is supplied to the total wind pressure PGeneral assemblyEqual to the total wind pressure P when the wind source device for the railway vehicle stops supplying windStop blockStopping the auxiliary wind source device and recording the running time of the main wind source device as a first time t1；
A first time t1And a third time t0Comparing the two, if the first time t is1Greater than or equal to the third time t0(i.e.: t)1≥t0) Controlling the main wind source device and the auxiliary wind source device to stop; if the first time t1Less than the third time t0(i.e.: t)1＜t0) When the air source device for one rail vehicle (the auxiliary air source device) stops, the air source device for the other rail vehicle (the main air source device) enters a circulating operation mode to operate for a fourth time t4Then stopping the machine;
wherein the first time t1Is determined by the actual recording time; a third time t0The self-setting time is generally 10 minutes to 40 minutes, and can also be set according to the working rate of the air source device for the railway vehicle and the emulsification risk of the lubricating oil when the railway vehicle is in different stages (such as a debugging period, an initial operation period, a formal operation period and the like) (when the working rate of the air source device for the railway vehicle is low and the emulsification risk of the lubricating oil is high, a longer time period is taken); fourth time t4From a third time t0Minus the first time t1Determination (i.e.: t)4＝t0－t1)。
Working conditions are as follows: if total wind pressure PGeneral assemblyGreater than or equal to the first total wind pressure POpener 2And is less than the second totalWind pressure POpener 1(i.e., P)Opener 2≤PGeneral assembly＜POpener 1) Then, one wind source device (main wind source device) for the rail vehicle is started to enter a normal wind supply mode to reach the total wind pressure PGeneral assemblyEqual to the total wind pressure P when the wind source device for the railway vehicle stops supplying windStop blockAnd recording the running time of the main wind source device as a second time t2；
A second time t2And a third time t0Making a comparison if the second time t2Greater than or equal to the third time t0(i.e.: t)2≥t0) Controlling the main wind source device and the auxiliary wind source device to stop; if the second time t2Less than the third time t0(i.e.: t)1＜t0) Then the wind source device for the rail vehicle (main wind source device) enters the circulation operation mode and operates for the fifth time t5Then stopping the machine;
wherein the second time t2Is determined by the actual recording time; a third time t0The self-setting time is generally 10 minutes to 40 minutes, and can also be set according to the working rate of the air source device for the railway vehicle and the emulsification risk of the lubricating oil when the railway vehicle is in different stages (such as a debugging period, an initial operation period, a formal operation period and the like) (when the working rate of the air source device for the railway vehicle is low and the emulsification risk of the lubricating oil is high, a longer time period is taken); a fifth time t5From a third time t0Minus the second time t2Determination (i.e.: t)5＝t0－t2)。
Working conditions are as follows: if total wind pressure PGeneral assemblyGreater than or equal to the second total wind pressure POpener 1(i.e., P)General assembly＞POpener 1) Then only one wind source device (main wind source device) for the rail vehicle is started to enter the circulation operation mode to the total wind pressure PGeneral assemblyEqual to the total wind pressure P when the wind source device for the railway vehicle stops supplying windStop blockAnd recording the third time t of the operation of the main wind source device0Then stopping the machine;
wherein the third time t0For self-setting time, generally 10 minutes to 40 minutes, and also in different stages according to the rail vehicle (b)Such as: commissioning period, initial operation period, regular operation period, and the like) and the emulsification risk of the lubricating oil (when the operating rate of the air source device for a rail vehicle is low and the emulsification risk of the lubricating oil is high, a long period of time is taken).
In the third working condition, if the air source device for the rail vehicle is in the circulating operation mode and needs to supply air to the rail vehicle, the air source device for the rail vehicle (the main air source device) immediately turns into the normal air supply mode to reach the total air pressure PGeneral assemblyEqual to the total wind pressure P when the wind source device for the railway vehicle stops supplying windStop block. In the engineering, the operation time of the wind source device for the railway vehicle for switching into the normal wind supply mode is always recorded as the sixth time t6(ii) a The sixth time t6And a third time t0Comparing if it is the sixth time t6Less than the third time t0(i.e.: t)6＜t0The continuous operation time of the wind source device for the railway vehicle does not reach the third time t0) Then the air source device for the rail vehicle is switched into the circulating operation mode again until the continuous operation time of the air source device for the rail vehicle reaches a third time t0Then stopping the machine; wherein the sixth time t6As determined by the actual recording time. There are two situations at shutdown:
firstly, if the continuous operation time of the wind source device for the rail vehicle reaches a third time t0When the air source device for the railway vehicle is in a circulating operation mode, the air source device for the railway vehicle is directly stopped;
if the continuous operation time of the wind source device for the railway vehicle reaches the third time t0When the wind source device for the railway vehicle is in the normal wind supply mode, the wind source device for the railway vehicle supplies wind to the total wind pressure PGeneral assemblyEqual to the total wind pressure P when the wind source device for the railway vehicle stops supplying windStop blockAnd stopping the machine after the operation.
In an optional embodiment of the present invention, before step S1, the method further includes confirming the working states of two wind source devices (one is the main wind source device, and the other is the auxiliary wind source device) in the rail vehicle on the same day; if the main wind source device is in a normal working state, only allowing the main wind source device to enter a circulating operation working mode on the same day; and if the main wind source device fails, the auxiliary wind source device is lifted to be the main wind source device, and the auxiliary wind source device is allowed to enter a circulating operation working mode on the same day.
In an alternative embodiment of the present invention, after step S3, the method further includes acquiring data of moisture content in the lubricant oil in the oil gas bucket of the compressor 3 by the moisture sensor 11, and performing the following logic:
if the data acquired by the moisture sensor 11 shows that the water content is low (namely the water content is less than a preset water content threshold value) and no risk of emulsification exists, the wind source device for the railway vehicle keeps a shutdown state and does not need to be controlled to enter a circulating operation mode;
if the water content of the data acquired by the moisture sensor 11 is high (namely, the water content is slightly larger than or equal to a preset water content threshold value), the emulsification risk exists or the slight emulsification phenomenon occurs, the air source device is controlled to enter a circulating operation mode to operate for a certain time until the water content of the data acquired by the moisture sensor 11 is displayed and the water content is recovered to be normal, when the air source device operates in the circulating operation mode, the requirement for supplying air to the vehicle occurs, the air source device is controlled to immediately switch to a normal air supply mode, and the requirement for supplying air to the vehicle is preferentially ensured;
if the data collected by the moisture sensor 11 shows that the water content is very high (i.e., the water content is much greater than the preset water content threshold), and a serious emulsification phenomenon occurs, the liquid water in the oil-gas barrel of the compressor 3 needs to be discharged first, and then the air source device for the rail vehicle is controlled to enter a circulating operation mode, so as to eliminate the emulsification problem.
In an optional embodiment of the invention, after the rail vehicle is electrified for the wind source device, in a stop state of the wind source device, the oil level data in the compressor 3 is collected through the first liquid level sensor 12, and the oil level data in the cooler 5 is collected through the second liquid level sensor 13, so as to obtain the total oil quantity of the lubricating oil in the wind source device for the rail vehicle (namely the sum of the oil quantity in the compressor 3 and the oil quantity in the cooler 5); and if the total oil amount of the lubricating oil in the air source device for the railway vehicle is smaller than the preset lubricating oil content threshold value, indicating that the unit is lack of oil, and supplementing the lubricating oil into the air source device for the railway vehicle.
If the working state monitoring method of the air source device for the railway vehicle is applied to the reciprocating piston type oil-free air source device, the arrangement of the moisture sensor 11, the first liquid level sensor 12 and the second liquid level sensor 13 can be eliminated, the characteristic that most of compressed air entering the compressor 3 in a circulating operation mode of the air source device is air which is dried and purified is utilized, on one hand, the dried and purified air participates in the compression process, the water absorption capacity is high, the residual moisture of the piston cylinder can be taken away in time, the frictional wear environment between the self-lubricating piston ring and the wall of the piston cylinder is improved, and the stability is improved; on the other hand, the dried and purified compressed air participates in the drying process and the compressed air regeneration process of the double-tower dryer 702, the load on the double-tower dryer 702 is small, the generated friction dust is less, the existing friction dust can be discharged in time, the working state of the double-tower dryer 702 is improved, and the service life of the double-tower dryer is prolonged.
The method for monitoring the working state of the wind source device for the railway vehicle has the characteristics and advantages that:
firstly, the method for monitoring the working state of the air source device for the railway vehicle can be automatically controlled, the problem of emulsification of lubricating oil in the compressor 3 is prevented and controlled, and manual operation is not needed.
The working state monitoring method of the air source device for the railway vehicle can automatically monitor the oil quantity of lubricating oil in the air source device and the water content of the lubricating oil, effectively prevent and control the emulsification problem of the lubricating oil, does not need manual operation, and greatly improves the automation degree.
The working state monitoring method of the air source device for the railway vehicle has the advantages that a large amount of air cannot be directly exhausted to the outside in the process of preventing, preventing and emulsifying lubricating oil (namely, the air source device is in a circulating operation mode), the noise is low, the noise pollution to the outside environment cannot be caused, and therefore the normal work of workers in a workshop cannot be influenced.
The working state monitoring method of the air source device for the railway vehicle can ensure the maximum air inflow in the compressor 3 in the process of preventing, preventing and emulsifying lubricating oil (namely, the air source device is in a circulating operation mode), has large compressed air amount and much heat release in unit time, can quickly improve the oil temperature, and has good effects of preventing and emulsifying lubricating oil.
In the working state monitoring method of the air source device for the railway vehicle, most of air participating in cyclic compression is dried and purified by the air drying and purifying device 7 in the process of preventing, preventing and emulsifying the lubricating oil (namely, the air source device is in a cyclic operation mode), the air humidity is low, and water separated out from the lubricating oil can be quickly taken away, so that the problem of emulsifying the lubricating oil is effectively prevented and eliminated.
Sixth, this wind regime device operating condition monitoring method for rail vehicle can carry out normal air feed mode, can not reduce the ability that the wind regime device carries out the air feed for rail vehicle, can not produce the risk that the air feed ability is not enough.
Seventhly, the working state monitoring method of the air source device for the railway vehicle can effectively improve the frictional wear environment between the self-lubricating piston ring of the reciprocating piston type oil-free air source device and the wall of the piston cylinder, ensure stable air displacement and prolong the service life.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.

Claims (22)

1. A rail vehicle wind source device, characterized in that, rail vehicle wind source device includes air inlet unit, compressor and air drying purifier, wherein:
the air inlet device is characterized in that an air source is connected to a first air inlet of the air inlet device, an air outlet of the air inlet device is connected with a low-pressure air inlet of the compressor, a high-pressure air outlet of the compressor is connected with an air inlet of the air drying and purifying device, an air outlet of the air drying and purifying device is connected into a downstream main air pipeline, a circulating pipeline is externally connected between the air outlet of the air drying and purifying device and the downstream main air pipeline, the circulating pipeline is connected with a second air inlet of the air inlet device, and an electromagnetic valve is arranged on the circulating pipeline.
2. The wind source device for the rail vehicle according to claim 1, wherein in a power-off state of the electromagnetic valve, external air sequentially flows into the compressor through the first air inlet of the air inlet device and the air outlet of the air inlet device to be compressed, the compressed air enters the air drying and purifying device to be dried and purified, a part of the compressed air containing impurities is discharged to the outside, and the other part of the clean compressed air flows into the downstream main wind pipeline.
3. The wind source apparatus for a railway vehicle according to claim 2, wherein in a state where the electromagnetic valve is electrically conducted, external air sequentially flows into the compressor through the first air inlet of the air inlet apparatus and the air outlet of the air inlet apparatus to be compressed, the compressed air enters the air drying and purifying apparatus to be dried and purified, a portion of the compressed air containing impurities is discharged to the outside, and another portion of the clean compressed air flows back through the circulation line and sequentially flows into the compressor through the second air inlet of the air inlet apparatus and the air outlet of the air inlet apparatus.
4. The wind source device for a railway vehicle according to claim 3, wherein an amount of the outside air that enters the first intake port of the air intake device per unit time in the electrically conductive state of the solenoid valve is smaller than an amount of the outside air that enters the first intake port of the air intake device per unit time in the electrically non-conductive off state of the solenoid valve.
5. The wind source device for the rail vehicle according to claim 1, wherein the air inlet device comprises a silencer and an air inlet valve, an air outlet of the silencer is connected with an air inlet of the air inlet valve, two air inlets provided on the silencer are a first air inlet and a second air inlet of the air inlet device, and an air outlet of the air inlet valve is an air outlet of the air inlet device.
6. The wind source device for the railway vehicle according to claim 1 or 5, further comprising an air filter for filtering solid impurities in the air, wherein the air filter is arranged at the upstream of the air inlet device, an air inlet of the air filter is connected to the air source, and an air outlet of the air filter is connected to the first air inlet of the air inlet device.
7. The wind source device for the rail vehicle according to claim 1, further comprising a controller, wherein a moisture sensor for detecting a moisture content in the oil-gas barrel and a first liquid level sensor for detecting an oil level in the oil-gas barrel are disposed in the oil-gas barrel of the compressor, a detection signal output end of the moisture sensor and a detection signal output end of the first liquid level sensor are electrically connected to a detection signal receiving end of the controller, respectively, and a control signal output end of the controller is electrically connected to a control end of the electromagnetic valve.
8. The wind source device for the rail vehicle according to claim 7, wherein a cooler is disposed between the high-pressure air outlet of the compressor and the air inlet of the air drying and purifying device, a second liquid level sensor for detecting an oil level in the cooler is disposed inside the cooler, and a detection signal output end of the second liquid level sensor is electrically connected to a detection signal receiving end of the controller.
9. The wind source apparatus for a railway vehicle according to claim 8, wherein a safety valve is disposed between the high pressure outlet of the compressor and the inlet of the cooler, and a control end of the safety valve is electrically connected to a control signal output end of the controller.
10. The wind source device for a railway vehicle according to claim 8, wherein the air outlet of the cooler and the air inlet of the air drying and purifying device are connected by a hose.
11. The wind source apparatus for a railway vehicle according to claim 1, wherein the air drying and purifying apparatus comprises a pre-filter, a double-tower dryer, and a post-filter, and the pre-filter, the double-tower dryer, and the post-filter are connected in series in a flow direction of the air.
12. The rail vehicle air source device according to claim 11, wherein a first overflow valve is provided in the downstream main air line, and the first overflow valve is located downstream of a position where the downstream main air line is connected to the circulation line;
the opening pressure of the first overflow valve meets the following conditions:
Pmeasuring≤POverflow 1＜POpener 2；
Wherein, the PMeasuringThe lowest pressure required for monitoring the working state of the double towers in the double-tower dryer; the P isOverflow 1The opening pressure of the first overflow valve; the P isOpener 2The total wind pressure when two wind source devices in the railway vehicle are started simultaneously.
13. The rail vehicle wind source device according to claim 11, wherein a second overflow valve or a throttle valve is provided on the circulation line, and a condition required to open the second overflow valve is the same as a condition required to open the throttle valve;
the opening pressure of the second overflow valve meets the following conditions:
PAD≤Poverflow 2＜PStop block；
Wherein, the PADThe pressure required by the normal working state of the double-tower dryer; the P isOverflow 2The opening pressure of the second overflow valve; the P isStop blockIs a wind source deviceTotal wind pressure when the wind supply is stopped.
14. A method for monitoring the operating condition of a wind source device for a railway vehicle, which is applied to the wind source device for a railway vehicle according to any one of claims 1 to 13, and which is characterized by comprising the following steps:
step S1: monitoring the total wind pressure in a total wind pipeline of the railway vehicle in real time;
step S2: comparing the total wind pressure with a first total wind pressure when two wind source devices for the rail vehicles in the rail vehicles are started simultaneously and a second total wind pressure when any one wind source device for the rail vehicles in the rail vehicles is started independently;
step S3: if the total wind pressure is smaller than the first total wind pressure, the two wind source devices for the railway vehicle are started simultaneously to enter a normal wind supply mode until the total wind pressure is equal to the total wind pressure when the wind source devices for the railway vehicle stop supplying wind;
if the total wind pressure is greater than or equal to the first total wind pressure and less than a second total wind pressure, starting one rail vehicle wind source device to enter a normal wind supply mode until the total wind pressure is equal to the total wind pressure when the rail vehicle wind source device stops supplying wind;
and if the total wind pressure is greater than or equal to a second total wind pressure, starting one rail vehicle wind source device to enter a circulating operation mode until the total wind pressure is equal to the total wind pressure when the rail vehicle wind source device stops supplying wind.
15. The method for monitoring the working condition of the wind source device for the rail vehicle according to claim 14, wherein in step S3, if the total wind pressure is less than the first total wind pressure, two wind source devices for the rail vehicle are simultaneously started to enter a normal wind supply mode until the total wind pressure is equal to the total wind pressure when the wind source device for the rail vehicle stops supplying wind, and the running time of the wind source device for the rail vehicle is recorded as a first time;
comparing the first time with a third time, and if the first time is greater than or equal to the third time, stopping the two wind source devices for the railway vehicle; if the first time is less than the third time, one air source device for the railway vehicle is stopped, and the other air source device for the railway vehicle is stopped after entering a circulating operation mode to operate for a fourth time;
wherein the first time is determined by an actual recording time; the third time is self-set time; the fourth time is determined by subtracting the first time from the third time.
16. The method for monitoring the operating condition of the wind source device for the rail vehicle according to claim 14, wherein in step S3, if the total wind pressure is greater than or equal to the first total wind pressure and less than a second total wind pressure, one of the wind source devices for the rail vehicle is started to enter a normal wind supply mode until the total wind pressure is equal to the total wind pressure when the wind source device for the rail vehicle stops supplying wind, and the operating time of the wind source device for the rail vehicle is recorded as a second time;
comparing the second time with a third time, and if the second time is greater than or equal to the third time, stopping the wind source device for the railway vehicle; if the second time is less than the third time, the wind source device for the railway vehicle is stopped after entering a circulating operation mode to operate for a fifth time;
wherein the second time is determined by the actual recording time; the third time is self-set time; the fifth time is determined by subtracting the second time from the third time.
17. The method for monitoring the operating condition of the wind source device for the rail vehicle according to claim 14, wherein in step S3, if the total wind pressure is greater than or equal to a second total wind pressure, one of the wind source devices for the rail vehicle is started to enter a cyclic operation mode until the total wind pressure is equal to the total wind pressure when the wind supply of the wind source device for the rail vehicle is stopped, and the wind source device for the rail vehicle is stopped after the running time of the wind source device for the rail vehicle is recorded as a third time;
wherein the third time is a self-set time.
18. The method for monitoring the operating condition of the wind source device for the rail vehicle according to claim 14, wherein in the step S3, if the wind source device for the rail vehicle needs to supply wind to the rail vehicle when being in the circulation operation mode, the wind source device for the rail vehicle is shifted to a normal wind supply mode until the total wind pressure is equal to the total wind pressure when the wind source device for the rail vehicle stops supplying wind.
19. The method for monitoring the working condition of the wind source device for the railway vehicle as claimed in claim 18, wherein the operation time of the wind source device for the railway vehicle, which is switched into the normal wind supply mode, is recorded as a sixth time;
comparing the sixth time with a third time, and if the sixth time is less than the third time, switching the air source device for the railway vehicle into a circulating operation mode again until the continuous operation time of the air source device for the railway vehicle reaches the third time, and stopping the air source device;
wherein the sixth time is determined by the actual recording time.
20. The method for monitoring the operating condition of the wind source device for the railway vehicle according to claim 19, wherein if the wind source device for the railway vehicle is in the circulation operation mode when the continuous operation time of the wind source device for the railway vehicle reaches a third time, the wind source device for the railway vehicle is directly stopped; and if the continuous operation time of the wind source device for the railway vehicle reaches a third time, and the wind source device for the railway vehicle is in a normal wind supply mode, the wind source device for the railway vehicle is stopped after supplying wind until the total wind pressure is equal to the total wind pressure when the wind source device for the railway vehicle stops supplying wind.
21. The method for monitoring the working condition of the wind source device for the railway vehicle as claimed in claim 14, wherein after the step S3, the method further comprises the steps of collecting moisture content data of lubricating oil in an oil gas barrel of the compressor through a moisture sensor; if the moisture content is smaller than a preset moisture content threshold value, the wind source device for the railway vehicle keeps a shutdown state; and if the moisture content is greater than or equal to a preset moisture content threshold value, controlling the air source device for the railway vehicle to enter a circulating operation mode, or firstly discharging liquid water in an oil gas barrel of a compressor and then controlling the air source device for the railway vehicle to enter the circulating operation mode.
22. The method for monitoring the operating condition of the wind source device for the railway vehicle as claimed in claim 14, wherein the oil level data in the compressor is collected by a first liquid level sensor, and the oil level data in the cooler is collected by a second liquid level sensor to obtain the total oil amount of the lubricating oil in the wind source device for the railway vehicle; and if the total oil amount of the lubricating oil in the wind source device for the railway vehicle is less than a preset lubricating oil content threshold value, supplementing the lubricating oil into the wind source device for the railway vehicle.
CN202110527370.0A 2021-05-14 2021-05-14 Wind source device for railway vehicle and working state monitoring method thereof Pending CN113153689A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115059998A (en) * 2022-07-11 2022-09-16 青岛市地铁规划设计院有限公司 Adjustable platform door ventilation air-conditioning system of subway station no-piston air shaft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115059998A (en) * 2022-07-11 2022-09-16 青岛市地铁规划设计院有限公司 Adjustable platform door ventilation air-conditioning system of subway station no-piston air shaft
CN115059998B (en) * 2022-07-11 2024-04-05 青岛市地铁规划设计院有限公司 Adjustable platform door ventilation air conditioning system of piston-free air shaft of subway station

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