CN111169504A - Wind source device for rail transit vehicle - Google Patents

Wind source device for rail transit vehicle Download PDF

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Publication number
CN111169504A
CN111169504A CN202010074256.2A CN202010074256A CN111169504A CN 111169504 A CN111169504 A CN 111169504A CN 202010074256 A CN202010074256 A CN 202010074256A CN 111169504 A CN111169504 A CN 111169504A
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CN
China
Prior art keywords
air
source device
compressor unit
rail transit
pipeline
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Pending
Application number
CN202010074256.2A
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Chinese (zh)
Inventor
张建海
孟红芳
孔德帅
孙正军
宫明兴
裴正武
王硕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Railway Sciences Corp Ltd CARS
Locomotive and Car Research Institute of CARS
Beijing Zongheng Electromechanical Technology 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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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 filed Critical China Academy of Railway Sciences Corp Ltd CARS
Priority to CN202010074256.2A priority Critical patent/CN111169504A/en
Publication of CN111169504A publication Critical patent/CN111169504A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
    • B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
    • B61H11/08—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes comprising a pump or the like circulating fluid, braking being effected by throttling of the circulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/002—Air treatment devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/002—Air treatment devices
    • B60T17/004—Draining and drying devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/002—Air treatment devices
    • B60T17/008—Silencer devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Compressor (AREA)

Abstract

The invention relates to an air source device for a rail transit vehicle, which comprises an air compressor unit, wherein a branch pipeline is arranged on an air outlet pipeline of the air compressor unit, an air exhaust device which can be closed when the air source device supplies air to the vehicle and can be opened when the air is exhausted independently is arranged on the branch pipeline, and the tail end of the branch pipeline is communicated with the outside atmosphere. The air source device can effectively prevent the problem of lubricating oil emulsification of the air source device, can realize the integrated design and manufacture of the exhaust device and the air source device, and cannot reduce the air supply capacity of the air source device for vehicles.

Description

Wind source device for rail transit vehicle
Technical Field
The invention relates to the technical field of rail transit, in particular to a wind source device for rail transit vehicles.
Background
The air source device is a vital component of a vehicle braking system and is mainly responsible for providing compressed air which meets the specified pressure, has high quality and is stable for the vehicle braking system so as to realize air braking, and when the air source device is used, the tail end of an air outlet pipeline in the air source device is directly connected with a main air pipe of a vehicle so as to realize air supply for the vehicle.
The air compressor unit in the air source device is responsible for compressing air, but since the outside air contains certain water vapor, the water vapor content in unit volume and the corresponding dew point temperature of the air can be increased along with the increase of pressure after the air is compressed. At this time, if the temperature of the compressed air is higher than the dew point temperature, the water vapor in the compressed air does not separate out liquid water; however, if the compressed air temperature is lower than the dew point temperature, water vapor in the compressed air will condense out liquid water. If liquid water is generated in the air compression process, the liquid water can be mixed with lubricating oil in the air compressor unit, and after the air compressor unit works for a period of time, the lubricating oil can be emulsified under the action of the air flow.
Generally, when the compressed air temperature is low and is lower than the dew point temperature immediately after the wind source device is started, a small amount of liquid water may be precipitated. After the air source device works for a period of time, the compressed air does work, the heat can be released in the compression process, the temperature of the compressed air can be increased along with the heat, the temperature of the compressed air is higher than the dew point temperature, the water content of the compressed air is in an unsaturated state at the moment, liquid water cannot be separated out, partial water in lubricating oil can be taken away, and the emulsification risk is reduced.
Therefore, in order to solve the problem of emulsification of the lubricating oil, the working time of the air source device is generally prolonged to ensure that the temperature of the compressed air is higher than the dew point temperature. Based on this, mainly adopt to air supply for the vehicle simultaneously through an exhaust device to external exhaust, increase the air consumption at present, and then prolong the operating time of wind regime device, avoid lubricating oil emulsification problem.
The structure of an air source device and an air exhaust device in the prior art is shown in fig. 1, a set of air exhaust device is additionally arranged at the downstream of the whole air source device 01 at present and consists of a cut-off cock 02, an electromagnetic valve 03, an overflow valve 04, a throttling hole 05 and a silencer 06, when in use, the air exhaust device is connected to the air outlet of the air source device 01 through a pipeline, the air exhaust device can be manually closed and opened through the cut-off cock 02, the air exhaust device can be closed in the running process of a vehicle through the electromagnetic valve 03, and the overflow valve 04 mainly ensures the safety of air consumption of the vehicle; because the required gauge pressure at the main air pipe is about 900kPa, the exhaust device is communicated with the outside atmosphere, the gauge pressure of the outside atmosphere is 0, and the exhaust device is opened at the same time of air supply, in order to ensure that the smooth air supply is not influenced while air is exhausted, the throttle hole 05 needs to be additionally arranged to control the air consumption, wherein the outer diameter of the air outlet pipeline is 18mm, and the inner diameter of the throttle hole 05 is generally 2 mm.
However, the above-described wind source device 01 still has the following problems:
1. the air exhaust device and the air source device 01 in the prior art are mutually independent, the air exhaust device needs to be designed and installed independently, the air exhaust device needs to be connected to a pipeline interface on an air outlet pipeline during installation, and meanwhile, a control circuit of an electromagnetic valve 03 needs to be added, so that the air exhaust device is complicated;
2. the existing exhaust device needs to be provided with an orifice 05, the drift diameter of the orifice 05 is smaller than the displacement of the wind source device 01, the exhaust device can be started to work only when the wind source device 01 supplies wind to a vehicle, and cannot be started to work independently, otherwise, due to the action of the orifice 05, the pressure in an air compressor unit and a main air pipe is too high, the air pressure of a system is increased, and the allowable pressure of the system can be exceeded; meanwhile, just because the existing exhaust device can only be opened when the vehicle supplies air, the air supply capacity of the air source device 01 for the vehicle is reduced, and the risk that the air supply capacity of the air source device 01 is possibly insufficient when the vehicle is in a working condition with large air consumption exists.
3. The air source device 01 sends compressed air into an air cylinder of the vehicle through a main air pipe of the vehicle, however, if the vehicle does not start to use air, if the air source device 01 is not started and an electromagnetic valve 03 in the exhaust device fails and cannot be closed, the compressed air in the air cylinder of the vehicle may be directly discharged from the exhaust device to the outside atmosphere through the main air pipe, and the total air pressure in the air cylinder of the vehicle is reduced from the highest pressure to the opening value of an overflow valve 04, which may affect the air consumption of the vehicle.
Therefore, the inventor provides the wind source device for the rail transit vehicle by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide an air source device for a rail transit vehicle, which can effectively prevent the problem of emulsification of lubricating oil of the air source device, can realize integrated design and manufacture of an exhaust device and the air source device, and cannot reduce the air supply capacity of the air source device for the vehicle.
The invention aims to realize the purpose, and the air source device for the rail transit vehicle comprises an air compressor unit; the air outlet pipeline of the air compressor unit is provided with a branch pipeline, the branch pipeline is provided with an air exhaust device which can be closed when the air source device supplies air to the vehicle and can be opened when the air source device exhausts air independently, and the tail end of the branch pipeline is communicated with the outside atmosphere.
In a preferred embodiment of the present invention, the exhaust device is composed of an electromagnetic valve, an overflow valve and a silencer which are connected in sequence.
In a preferred embodiment of the present invention, the inner diameter of the branch pipeline is equal to or larger than the inner diameter of the gas outlet pipeline.
In a preferred embodiment of the present invention, a check valve is provided on the gas outlet line after the junction of the branch line and the gas outlet line.
In a preferred embodiment of the present invention, the apparatus further comprises a controller; an air inlet temperature sensor and an air inlet humidity sensor are sequentially arranged on an air inlet pipeline of the air compressor unit and positioned at an air inlet of the air compressor unit, and an air outlet temperature sensor and an air outlet pressure sensor are sequentially arranged on an air outlet pipeline of the air compressor unit and positioned at an air outlet of the air compressor unit; and the air inlet temperature sensor, the air inlet humidity sensor, the air outlet temperature sensor, the air outlet pressure sensor and the air compressor unit are electrically connected with the controller.
In a preferred embodiment of the present invention, an air compressor unit safety valve is disposed on the air outlet pipeline and behind the air compressor unit.
In a preferred embodiment of the invention, a cooler is provided between the safety valve of the air compressor unit and the connection node of the branch line and the outlet line.
In a preferred embodiment of the invention, a dryer is provided between the cooler and the connection node.
In a preferred embodiment of the invention, an air filter is arranged in the intake line of the air compressor unit, a front filter is arranged between the cooler and the dryer, and a rear filter is arranged between the dryer and the connection point.
In a preferred embodiment of the invention, a dryer front end relief valve is provided between the cooler and the pre-filter.
In a preferred embodiment of the present invention, an air outlet safety valve is disposed on the air outlet pipeline and at the rear end of the check valve.
From the above, the air source device of the invention separates the air supply work and the air exhaust work of the vehicle independently, and the air supply work and the air exhaust work are independent respectively, and the air supply work does not exhaust air, thereby ensuring the air supply capacity of the air source device. The air is not supplied during the air exhaust operation, and the aim of prolonging the working time of the air source device can be fulfilled by prolonging the air exhaust time. When the vehicle does not need to supply air, the air source device is used for independently exhausting air to the outside, so that the temperature of the lubricating oil can be increased, the oil temperature is higher when the air source device is started next time, the compressed air temperature is favorably and quickly increased to be higher than the dew point temperature, the moisture is not easy to separate out, and the risk of lubricating oil emulsification is reduced; and the separated water possibly existing in the lubricating oil can be taken away, so that the risk of emulsifying the lubricating oil is further reduced. And when the vehicle does not need the air source device to supply air for the vehicle, the air source device can be started at any time to continuously work and exhaust air to the outside, and the selectable time range is wider. In addition, the air exhaust device and the air source device are integrally designed, and the air exhaust device is not required to be independently designed and installed, so that the operation is more convenient.
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 schematic structural diagram of an air source device and an air exhaust device in the prior art.
FIG. 2: the invention provides a schematic structural diagram of a wind source device.
The reference numbers illustrate:
the prior art is as follows:
01. a wind source device; 02. the cock is cut off; 03. an electromagnetic valve; 04. an overflow valve; 05. an orifice; 06. a silencer.
The invention comprises the following steps:
1. an air filter; 2. an intake air temperature sensor; 3. an intake air humidity sensor; 4. an air compressor unit; 41. an air intake line; 42. an air outlet pipeline; 421. a branch line;
5. an outlet air temperature sensor; 6. an outlet gas pressure sensor; 7. a controller; 8. a safety valve of the air compressor unit; 9. a cooler; 10. a safety valve at the front end of the dryer; 11. a pre-filter; 12. a dryer; 13. a post-filter; 14. a check valve; 15. an air outlet safety valve; 16. an electromagnetic valve; 17. an overflow valve; 18. a silencer.
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.
As shown in fig. 2, the present embodiment provides an air source device for a rail transit vehicle, which includes an air compressor unit 4, a branch pipe 421 is provided on an air outlet pipe 42 of the air compressor unit 4, an exhaust device capable of being closed when the air source device supplies air to the vehicle and being opened when the air is exhausted separately is provided on the branch pipe 421, and a tail end of the branch pipe 421 is communicated with the outside atmosphere. The air compressor unit 4 includes an air compressor, which may be a screw type, a piston type, or a sliding vane type, and an electric motor, which drives the air compressor to operate and generate compressed air. The structure of the air compressor set 4 is the prior art and will not be described in detail herein.
Thus, when the vehicle needs to supply air, the exhaust device is closed, the air compressor unit 4 compresses air and supplies air normally, and the exhaust device does not exhaust air while supplying air, so that the air consumption is not increased, and the air supply capacity of the air source device for supplying air to the vehicle is not reduced. After the air supply operation, the operation of airing exhaust alone as required, exhaust device opens this moment, because the end of air outlet pipeline 42 is connected with the vehicle main air pipe, pressure is very big, and exhaust device and external atmosphere intercommunication, pressure is very low, so, during the operation of airing exhaust, the compressed air in the air compressor unit 4 will select the branch pipeline 421 that the pressure is lower to pass through exhaust device and discharge to the atmosphere, can prolong the operating time of air compressor unit 4 through extension exhaust time this moment, and then effectively prevent the problem of air supply device lubricating oil emulsification.
Therefore, the air source device in the embodiment can independently separate the air supply work of the vehicle and the air exhaust work of the air source device, and respectively work independently, and does not exhaust air during the air supply work, so that the air supply capacity of the air source device is ensured. The air is not supplied during the air exhaust operation, and the aim of prolonging the working time of the air source device can be fulfilled by prolonging the air exhaust time. When the vehicle does not need to supply air, the air source device is used for independently exhausting air to the outside, so that the temperature of the lubricating oil can be increased, the oil temperature is higher when the air source device is started next time, the compressed air temperature is favorably and quickly increased to be higher than the dew point temperature, the moisture is not easy to separate out, and the risk of lubricating oil emulsification is reduced; and the separated water possibly existing in the lubricating oil can be taken away, so that the risk of emulsifying the lubricating oil is further reduced. And when the vehicle does not need the air source device to supply air for the vehicle, the air source device can be started at any time to continuously work and exhaust air to the outside, and the selectable time range is wider. In addition, this embodiment is with exhaust device and wind source device body design to do not need exhaust device to design alone again and install, it is more convenient to operate.
In a specific implementation mode, the air exhaust device consists of an electromagnetic valve 16, an overflow valve 17 and a silencer 18 which are connected in sequence.
The electromagnetic valve 16 is electrically connected with a controller 7 described below, when the electromagnetic valve 16 is opened, the air outlet pipeline 42 is communicated with the overflow valve 17, and if the pressure in the air outlet pipeline 42 reaches the opening pressure of the overflow valve 17 at the moment, the overflow valve 17 is opened and exhausts air to the outside; when the electromagnetic valve 16 is closed, air can not be discharged to the outside through the overflow valve 17. Therefore, the reasonable opening pressure of the overflow valve 17 is set, and then whether the exhaust device exhausts air can be conveniently controlled by controlling the opening and closing of the electromagnetic valve 16, so that the operation is more convenient. In practical applications, the inner diameter of the branch pipe 421 is generally greater than or equal to the inner diameter of the outlet pipe 42, so as to ensure that the drift diameters of the electromagnetic valve 16, the overflow valve 17 and the silencer 18 can meet the maximum air discharge capacity of the wind source device.
Compared with the prior art in fig. 1, the exhaust device of the present embodiment is not provided with the orifice with a small inner diameter, the drift diameter of the exhaust device is relatively large, and the problem that the system air pressure is too high to exceed the allowable pressure of the system when the exhaust device is used alone is not caused. Therefore, when the pressure of the main air pipe of the vehicle reaches the shutdown pressure of the air source device and the air source device is no longer needed to supply air for the vehicle, or the pressure of the main air pipe of the vehicle does not reach the shutdown pressure of the air source device but does not give a signal for starting the air source device to supply air to the vehicle, the air source device can be started to independently exhaust air to the outside, and the problem of overhigh air pressure of the main air pipe can not be caused. It should be noted that, in the process of exhausting air to the outside from the air source device, if a signal that the air source device needs to supply air to the vehicle is received, the electromagnetic valve 16 should be immediately closed, and air supply to the vehicle is preferentially ensured.
For the opening pressure of the overflow valve 17, the pressure of the main air pipe which needs the normal start of the air source device should be considered during selection, and generally, two air source devices are arranged on the vehicle in order to ensure the safety of air supply. If the vehicle needs the wind source device to supply wind for the vehicle, the start-stop control pressure of the two wind source devices is as follows: the pressure in the main air pipe is lower than P1When one wind source device is started, the temperature is lower than P2When two wind source devices are started, P is reached0When the wind source device is stopped, the opening pressure P of the overflow valve 17OverflowIt should satisfy: p2＜P1≤P0-100kPa≤POverflow≤P0。
For example, P is the pressure in the main air duct (gauge pressure) of 900kPa, for example0At 900kPa, P may be set generally1At 750kPa, P2700kPa, therefore, one air source device is opened when the pressure in the main air pipe is lower than 750kPa, two air source devices are opened when the pressure in the main air pipe is lower than 700kPa, and the air source devices are stopped when 900kPa is reached. Correspondingly, 800kPa ≦ POverflowLess than or equal to 900kPa, e.g. POverflow820kPa, 850kPa, etc. may be used.
In order to avoid the influence of the wind for the vehicle when the solenoid valve 16 fails to close, a check valve 14 is provided on the outlet line 42 after the junction of the branch line 421 and the outlet line 42 to prevent the compressed air in the vehicle reservoir from flowing back. Of course, the check valve 14 may be replaced by a relief valve having a check function, so long as the relief valve has a check function, and this embodiment is merely an example.
Further, the air source device also comprises a controller 7, an air inlet temperature sensor 2 and an air inlet humidity sensor 3 are sequentially arranged on an air inlet pipeline 41 of the air compressor unit 4 and positioned at an air inlet of the air compressor unit, and an air outlet temperature sensor 5 and an air outlet pressure sensor 6 are sequentially arranged on an air outlet pipeline 42 of the air compressor unit 4 and positioned at an air outlet of the air compressor unit. And the air inlet temperature sensor 2, the air inlet humidity sensor 3, the air outlet temperature sensor 5, the air outlet pressure sensor 6 and the air compressor unit 4 are electrically connected with a controller 7.
Thus, the temperature t of the inlet air at the air inlet of the air compressor head can be detected in real time through the inlet air temperature sensor 2, the inlet air humidity sensor 3, the outlet air temperature sensor 5 and the outlet air pressure sensor 61And inlet air humidity h1And the temperature t of the air outlet at the air outlet of the air compressor head2And the pressure P of the outlet air3. These four data t are collected by the controller 71、h1、t2And P3And according to the data t1、h1And P3The dew point temperature t of the compressed air at the air outlet can be calculated3；
Then t is2And t3Making a comparison if t2Longer or often less than t3At this time, the controller 7 can judge that the working rate of the air source device is low and the risk of lubricating oil emulsification exists, and send out an early warning signal to the vehicle. When the vehicle does not need the air source device to supply air for the vehicle, the air source device is started as soon as possible, and the exhaust device is started to continuously work and exhaust air to the outside. In practical use, t is generally considered comprehensively2Less than t3The time of the air source device, the total working time of the air source device and other factors are used for judging the time for carrying out the independent air exhaust operation so as to prevent the lubricating oil from emulsifying.
In the specific implementation process, in order to protect the air compressor unit 4, an air compressor unit safety valve 8 is arranged on the air outlet pipeline 42 and behind the air compressor unit 4, so as to prevent the air compressor from being damaged due to overhigh air pressure caused by pipeline blockage or other reasons.
Further, a cooler 9 is provided between the connection nodes of the air compressor unit safety valve 8 and the branch line 421 and the outlet line 42 in order to cool the compressed air and the lubricating oil. Wherein the cooler 9 here is generally divided into two parts, one part cooling the compressed air, this part being always open; the other part cools the lubricating oil, and the part is opened by a temperature control valve when the temperature of the lubricating oil reaches 83 ℃, and the specific structure of the cooler 9 is the prior art and is not described again.
A dryer 12 is provided between the cooler 9 and the connection node and is electrically connected to the controller 7 in order to absorb moisture in the compressed air. The dryer 12 may be a heatless regeneration adsorption dryer, a membrane dryer, or a twin tower dryer, but the present invention is not limited thereto.
Furthermore, an air filter 1 is arranged on the inlet line 41 of the air compressor group 4, a front filter 11 is arranged between the cooler 9 and the dryer 12, and a rear filter 13 is arranged between the dryer 12 and the connection point.
The air filter 1 can filter air entering the air compressor unit 4 from the outside, and generally adopts periodic manual pollution discharge; the pre-filter 11 can filter liquid water, oil and the like in the compressed air and discharge the liquid water, oil and the like to the outside, a coagulation type filter with an automatic pollution discharge electromagnetic valve is generally adopted and is electrically connected with the controller 7, pollution discharge is carried out under the control of the controller 7, the number and the filtering precision of the pre-filter 11 are selected according to the types of the air compressor unit 4 and the dryer 12, and the invention is not limited to the above; the post-filter 13 can further filter solid particles, suspension oil and part of oil gas molecules in the compressed air, and generally adopts a condensation type filter without an automatic pollution discharge electromagnetic valve, and manual pollution discharge is performed regularly according to needs. The specific structure of the dryer 12 and each filter is prior art and will not be described in detail herein.
In addition, when the independent air exhaust operation is carried out, the opening pressure of the overflow valve 17 is high, the air pressure in the pipeline is also high, and the front-back pressure difference between the dryer 12 and the front filter 11 and the back filter 13 is small, so that the better drying and filtering effects can be ensured, the impact of the air flow on the drying agent or the water absorption film (membrane dryer) in the dryer 12 can be reduced, and the service life of the dryer can be prolonged. Meanwhile, under the condition that the electromagnetic valve 16 fails and cannot be closed, the overflow valve 17 can also ensure that the air source device supplies air to the main air pipe normally (at the moment, the highest air supply pressure is P)Overflow) And the running safety of the vehicle is ensured.
In order to prevent damage to the cooler 9, the filters and the dryer 12 due to excessive air pressure in the event of clogging of the filter or dryer 12, a dryer front end safety valve 10 is provided between the cooler 9 and the pre-filter 11 for protection.
In order to protect the main air duct of the vehicle, an air outlet safety valve 15 is disposed on the air outlet line 42 and at the rear end of the check valve 14 to prevent the main air duct of the vehicle from being damaged due to over-high air pressure.
For convenience of processing and installation, the above components are preferably arranged at positions where the air filter 1, the intake air temperature sensor 2 and the intake air humidity sensor 3 are sequentially arranged from front to back along the airflow direction on the intake pipe 41 of the air compressor unit 4; on an air outlet pipeline 42 of the air compressor unit 4, an air outlet temperature sensor 5, an air outlet pressure sensor 6, an air compressor unit safety valve 8, a cooler 9, a dryer front end safety valve 10, a front filter 11, a dryer 12, a rear filter 13, a check valve 14 and an air outlet safety valve 15 are sequentially arranged from front to back along the air flow direction.
Therefore, during machining, the air inlet temperature sensor 2, the air inlet humidity sensor 3, the air compressor unit 4, the air outlet temperature sensor 5, the air outlet pressure sensor 6, the controller 7, the air compressor unit safety valve 8 and the cooler 9 are integrated together, the front filter 11, the dryer 12 and the rear filter 13 are integrated together, the electromagnetic valve 16, the overflow valve 17 and the silencer 18 are integrated together, the modular structure design is achieved, the structure is more compact, and installation is more convenient.
The above are merely exemplary embodiments of the present invention, and are 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 (11)

1. A wind source device for a rail transit vehicle is characterized by comprising an air compressor unit;
the air outlet pipeline of the air compressor unit is provided with a branch pipeline, the branch pipeline is provided with an air exhaust device which can be closed when the air source device supplies air to the vehicle and can be opened when the air source device exhausts air independently, and the tail end of the branch pipeline is communicated with the outside atmosphere.
2. The rail transit vehicle wind source device according to claim 1,
the exhaust device consists of an electromagnetic valve, an overflow valve and a silencer which are connected in sequence.
3. The rail transit vehicle wind source device according to claim 2,
the inner diameter of the branch pipeline is larger than or equal to that of the gas outlet pipeline.
4. The rail transit vehicle wind source device according to claim 2,
a check valve is arranged on the air outlet pipeline and behind the connecting node of the branch pipeline and the air outlet pipeline.
5. The rail transit vehicle wind source device according to claim 1,
the device also comprises a controller; an air inlet temperature sensor and an air inlet humidity sensor are sequentially arranged on an air inlet pipeline of the air compressor unit and at an air inlet of the air compressor unit, and an air outlet temperature sensor and an air outlet pressure sensor are sequentially arranged on an air outlet pipeline of the air compressor unit and at an air outlet of the air compressor unit;
and the air inlet temperature sensor, the air inlet humidity sensor, the air outlet temperature sensor, the air outlet pressure sensor and the air compressor unit are electrically connected with the controller.
6. The rail transit vehicle wind source device according to claim 1,
and an air compressor unit safety valve is arranged on the air outlet pipeline and behind the air compressor unit.
7. The rail transit vehicle wind source device according to claim 6,
and a cooler is arranged between the safety valve of the air compressor unit and the connecting node of the branch pipeline and the air outlet pipeline.
8. The rail transit vehicle wind source device according to claim 7,
a dryer is disposed between the cooler and the connection node.
9. The rail transit vehicle wind source device according to claim 8,
an air filter is arranged on an air inlet pipeline of the air compressor unit, a front filter is arranged between the cooler and the dryer, and a rear filter is arranged between the dryer and the connecting node.
10. The rail transit vehicle wind source device according to claim 9,
a dryer front end relief valve is disposed between the cooler and the pre-filter.
11. The rail transit vehicle wind source device according to claim 4,
and an air outlet safety valve is arranged on the air outlet pipeline and at the rear end of the check valve.
CN202010074256.2A 2020-01-22 2020-01-22 Wind source device for rail transit vehicle Pending CN111169504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010074256.2A CN111169504A (en) 2020-01-22 2020-01-22 Wind source device for rail transit vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010074256.2A CN111169504A (en) 2020-01-22 2020-01-22 Wind source device for rail transit vehicle

Publications (1)

Publication Number Publication Date
CN111169504A true CN111169504A (en) 2020-05-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010074256.2A Pending CN111169504A (en) 2020-01-22 2020-01-22 Wind source device for rail transit vehicle

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112963333A (en) * 2021-02-24 2021-06-15 中国铁道科学研究院集团有限公司 Method and device for determining diameter of blowback hole of dryer of vehicle air source device
CN113619545A (en) * 2021-09-23 2021-11-09 中国铁道科学研究院集团有限公司 Air source device for railway vehicle and method for improving exhaust quality of air source device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112963333A (en) * 2021-02-24 2021-06-15 中国铁道科学研究院集团有限公司 Method and device for determining diameter of blowback hole of dryer of vehicle air source device
CN113619545A (en) * 2021-09-23 2021-11-09 中国铁道科学研究院集团有限公司 Air source device for railway vehicle and method for improving exhaust quality of air source device

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