CN214384188U - Wind source device and air supply system for railway vehicle - Google Patents
Wind source device and air supply system for railway vehicle Download PDFInfo
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- CN214384188U CN214384188U CN202120109309.XU CN202120109309U CN214384188U CN 214384188 U CN214384188 U CN 214384188U CN 202120109309 U CN202120109309 U CN 202120109309U CN 214384188 U CN214384188 U CN 214384188U
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Abstract
The utility model relates to an air source device and an air supply system for a railway vehicle, the air source device for the railway vehicle comprises an air inlet valve and an unloading valve, a first cavity is formed in the unloading valve, a first air inlet, a first air outlet and a valve core position adjusting port are formed on the unloading valve, and a valve core is arranged in the first cavity; the air inlet valve is internally provided with a second chamber, the air inlet valve is provided with two air inlets and a second air outlet, the second chamber is internally provided with a valve plate, a third chamber is arranged below the valve plate, the third chamber is provided with a third air inlet and a third air outlet, the second air outlet and the valve core position adjusting port are communicated, the second air outlet and the first air inlet are respectively connected with a low-pressure air inlet and a high-pressure air outlet of the compressor, the compressor is connected with an air drying and purifying device, and the air drying and purifying device is respectively connected with the third air inlet and a downstream main air pipeline. The utility model provides a wind regime device not good, the fragile technical problem of result of use for rail vehicle.
Description
Technical Field
The utility model relates to a track traffic technical field especially relates to a wind regime device and air feed system for rail vehicle.
Background
At present, the rail vehicle generally utilizes the principle that an air source device can increase the oil temperature in an idle running mode, but air is not supplied to the downstream, so that lubricating oil in a compressor is heated, and emulsification of the lubricating oil is avoided. However, the wind source device is started to enter the idle running mode for 30 minutes and then stopped every day only when the vehicle is activated and has a zero-speed signal; if no other vehicle is activated and no speed signal is given, the wind source device does not enter the idle running mode on the same day. The way of preventing the emulsification of the lubricating oil has the following disadvantages:
in the prior art, in the idle running state, air entering the air source device and participating in compression comes from the outside, is not dried, and contains certain moisture inside, so that the moisture in the lubricating oil is absorbed at a low speed in the idle running process, and the anti-emulsification effect can be achieved only after the idle running time is relatively long;
secondly, for the emulsified lubricating oil, the existing scheme enters a compressor under the condition that air is not dried, the absorption speed of moisture in the lubricating oil is low, the emulsification is not suitable to be eliminated through an idle running mode, a main air pipeline valve (or an air cylinder valve) needs to be opened to exhaust the air to the outside, an air source device is started after the total air pressure is reduced, the emulsification problem is eliminated in a continuous operation mode under a normal air supply mode, the operation is complicated, and the noise is high when the air is exhausted to the outside under the normal air supply mode, so that the normal work of other working personnel is influenced;
and thirdly, when the wind source device is used for self-cleaning, the air quantity discharged to the outside is large, and certain noise is generated.
Therefore, in order to eliminate adverse effects caused by the emulsification of lubricating oil, in recent years, reciprocating piston type oil-free air source devices are gradually applied to the field of rail transit, and although the reciprocating piston type oil-free air source devices fundamentally solve the problem of the emulsification of the lubricating oil, if the working rate of the air source devices is insufficient to cause the precipitation of liquid water, great hidden dangers still exist in the stable operation of the air source devices: when liquid water is separated out, powder generated by friction between a self-lubricating piston ring in the reciprocating piston type oil-free air source device and the wall of a piston cylinder cannot be discharged in time, the powder is adhered to the water and attached to the wall of the piston cylinder, and in the working process of the air source device, the dust particles can scratch the cylinder wall and/or the piston ring, so that the frictional wear environment of the original self-lubricating piston ring and the cylinder wall is damaged, the leakage is increased, the air supply amount is insufficient, and the service life is shortened.
Aiming at the problems of poor use effect and easy damage of the wind source device for the railway vehicle in the related technology, no effective solution is provided at present.
Therefore, the inventor provides the wind source device and the wind supply system for the railway vehicle by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wind regime device and air feed system for rail vehicle, when wind regime device need not supply wind to the vehicle, steerable wind regime device gets into automatically cleaning state, the compressor of wind regime device is with the compressed air in order to promote the lubricating oil temperature this moment, make the wind regime device when starting next time, lubricating oil still keeps at higher temperature state, the compressed air temperature promotes soon, thereby reduce the risk of lubricating oil emulsification, in addition, filter solid particle through air drying purifier, the highly-compressed air of fluid and moisture can return to and participate in the compression process in the compressor, thereby take away the moisture that exists in the lubricating oil before fast, further prevent the emulsification of lubricating oil, promote the stability of wind regime device.
The purpose of the utility model can be realized by adopting the following technical scheme:
the utility model provides a wind regime device for rail vehicle, wind regime device for rail vehicle includes admission valve and off-load valve, wherein:
the unloading valve comprises an unloading valve body, a first cavity is formed inside the unloading valve body, a first air inlet and a first air outlet which are communicated with each other are formed in the unloading valve body, a valve core which can move upwards to be plugged between the first air inlet and the first air outlet is arranged in the first cavity, and a valve core position adjusting port which can control the valve core to move downwards to enable the first air inlet and the first air outlet to be restored to a communicated state is further formed in the unloading valve body;
the air inlet valve comprises an air inlet valve body, a second chamber is formed inside the air inlet valve body, a second air inlet and a second air outlet which are communicated with the second chamber are formed in the air inlet valve body, a valve plate capable of moving up and down is arranged in the second chamber, a third chamber is arranged below the valve plate, the position of the valve plate is adjusted by matching the air pressure of outside air, the pressure in the second chamber and the pressure in the third chamber to control the on-off between the second air inlet and the second chamber, a third air inlet and a third air outlet are arranged on the third chamber, the third air outlet, the second air outlet and the valve core position adjusting port are communicated, and the second air outlet and the first air inlet are respectively connected with a low-pressure air inlet of the compressor and a high-pressure air outlet of the compressor, the high-pressure exhaust port of the compressor is connected with the gas inlet of the air drying and purifying device, the gas outlet of the air drying and purifying device is respectively connected with the third gas inlet and the downstream main air pipeline, and a two-position three-way electromagnetic valve is arranged between the air drying and purifying device and the third gas inlet.
The utility model discloses an among the preferred embodiment two three-way solenoid valve loses the electric disconnection, just under the state of compressor operation, the external air gets into extremely in the second air inlet, and promote the valve plate moves down, the admission valve switches on, the external air passes through the low pressure air inlet of compressor gets into extremely compressed in the compressor, the high-pressure air of the high pressure gas vent exhaust of compressor passes through go into behind the air drying and purifying device low reaches total wind pipeline.
In a preferred embodiment of the present invention, when the two-position three-way solenoid valve is turned off when power is lost and the compressor is stopped, a first portion of high-pressure air in the compressor flows back into the second chamber through the second air outlet and pushes the valve plate to move upward until the air inlet valve is closed; and a second part of high-pressure air in the compressor enters the first cavity through the valve core position adjusting port and pushes the valve core to move downwards, the first air inlet is communicated with the first air outlet, and a third part of high-pressure air in the compressor is discharged outwards through the first air inlet and the first air outlet in sequence.
In a preferred embodiment of the present invention, when the two-position three-way solenoid valve is electrically connected and the compressor is in operation, the high-pressure air passing through the air drying and purifying device sequentially passes through the two-position three-way solenoid valve, the third air inlet, the third chamber, the third air outlet and the valve element position adjusting port to enter the first chamber; and the high-pressure air in the third chamber pushes the valve plate to move upwards, and the pressure of the outside air on the valve plate is balanced with the thrust of the high-pressure air in the third chamber on the valve plate.
The utility model discloses an in a preferred embodiment, when pressure in the third chamber reached preset threshold pressure, the process air drying purifier's highly-compressed air passes through two three way solenoid valves are to outer discharge.
In a preferred embodiment of the present invention, a top post is disposed on the top of the valve element, a first spring is disposed between the bottom of the valve element and the inner wall of the bottom of the first chamber, the valve element position adjusting port is located above the valve element, and the first air inlet and the first air outlet are both located above the valve element position adjusting port;
the first spring can push the valve core to move upwards so that the top column is blocked between the first air inlet and the first air outlet;
air is introduced into the valve core position adjusting port to push the valve core and the top column to move downwards, so that the first air inlet is communicated with the first air outlet.
In a preferred embodiment of the present invention, the outer wall of the valve core is connected to the inner wall of the first chamber in a sliding and sealing manner.
The utility model discloses an in a preferred embodiment, be provided with the piston seat in the second chamber, the piston seat is vertical setting, both ends open-ended tubular structure, the bottom opening of piston seat with the third chamber link up mutually, the inside of piston seat is provided with the piston that can reciprocate, the outer wall of piston with the inner wall sliding seal of piston seat connects, the valve plate set up in the top of piston.
The utility model discloses an in a preferred embodiment, the tubular structure that open-top, bottom that the piston is vertical setting were sealed, the valve plate is the flat structure of horizontal setting, the bottom of valve plate is connected with spacing post, spacing post is followed the open-top of piston stretches into to the inside of piston, the bottom of spacing post with be provided with the second spring between the bottom inner wall of piston.
In a preferred embodiment of the present invention, a cooler is disposed between the high pressure exhaust port of the compressor and the gas inlet of the air drying and purifying device.
In a preferred embodiment of the present invention, the air outlet of the air drying and purifying device and the downstream main air pipeline are provided with a second overflow valve and a safety valve therebetween.
The utility model discloses an in a preferred embodiment, two three way solenoid valve's air inlet with air drying purifier's gas outlet connects, two three way solenoid valve's working port with the third air inlet is connected, two three way solenoid valve's gas vent inserts the outside air.
The utility model discloses an in a preferred embodiment, two three way solenoid valve's gas vent inserts the outside air through first overflow valve or orifice.
In a preferred embodiment of the present invention, the air drying and purifying device includes a pre-filter, a dryer and a post-filter, wherein the pre-filter, the dryer and the post-filter are sequentially connected along a flow direction of the high pressure air.
The utility model provides a rail vehicle is with air feed system, rail vehicle is with air feed system includes two foretell rail vehicle and uses wind regime device, two rail vehicle all sets up in rail vehicle with wind regime device.
From above, the utility model discloses a wind regime device and air feed system for rail vehicle's characteristics and advantage are:
the on-off state of the two-position three-way electromagnetic valve is controlled according to the working state of the compressor, so that the on-off states of an air inlet valve and an unloading valve can be controlled, the stable operation of the compressor is ensured, the temperature of lubricating oil in the compressor is effectively raised after air is compressed, and the emulsification of the lubricating oil is prevented;
two, high-pressure air after the compressor compression can pass through air drying purifier purification treatment, filters solid particle, fluid and moisture in the high-pressure air, reaches the purpose to high-pressure air purification and drying, and high-pressure air after the air drying purifier treatment can return to and participate in the compression process to the air in the compressor, can take away the moisture that exists in the lubricating oil fast, further prevents the emulsification of lubricating oil, promotes the stability of compressor.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
FIG. 1: do the utility model discloses air supply device for rail vehicle's structural schematic diagram.
FIG. 2: do the utility model discloses the structural schematic of admission valve in the wind regime device for rail vehicle.
FIG. 3: do the utility model discloses the structure schematic diagram of unloading valve in the wind regime device for rail vehicle.
FIG. 4: do the utility model discloses operating condition picture of wind regime device when normal air feed mode for rail vehicle.
FIG. 5: do the utility model discloses operating condition chart when the unloading is shut down to normal air feed mode to wind source device for rail vehicle.
FIG. 6: do the utility model discloses the operating condition picture of wind regime device when automatically cleaning mode for rail vehicle.
FIG. 7: do the utility model discloses operating condition picture when self-cleaning mode shut down the off-load of wind regime device for rail vehicle.
The utility model provides an reference numeral does:
1. an intake valve; 101. An intake valve body;
1011. a second chamber; 1012. A second air inlet;
1013. a second air outlet; 1014. A third chamber;
1015. a third air inlet; 1016. A third air outlet;
102. a piston seat; 103. A valve plate;
104. a limiting column; 105. A second spring;
106. a piston; 2. An unloading valve;
201. an unloading valve body; 2011. A first chamber;
2012. a valve core position adjusting port; 2013. A first air inlet;
2014. a first air outlet; 202. A valve core;
203. a top pillar; 204. A first spring;
3. a compressor; 4. A cooler;
5. an air drying and purifying device; 501. A pre-filter;
502. a dryer; 503. A post-filter;
6. a two-position three-way electromagnetic valve; 7. A first overflow valve;
8. a second overflow valve; 9. A safety valve;
10. a downstream main air duct; 11. A first gas transmission pipeline;
12. a second gas transmission pipeline; 13. A third gas transmission pipeline;
14. a fourth gas transmission pipeline; 15. A fifth gas transmission pipeline;
16. a sixth gas transmission pipeline; 17. A seventh gas transmission pipeline;
18. an eighth gas transmission pipeline; p11A first total air pressure;
P12a second total wind pressure; t is t1The first time;
t2a second time; t is t3And a third time;
t4and a fourth time; t is t5And a fifth time.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
Implementation mode one
As shown in fig. 1 to 3, the utility model provides an air source device for rail vehicle, this air source device for rail vehicle includes admission valve 1 and unloading valve 2, wherein: the unloading valve 2 comprises an unloading valve body 201, a first cavity 2011 is formed in the unloading valve body 201, a first air inlet 2013 and a first air outlet 2014 which are communicated with each other are formed above the first cavity 2011 on the unloading valve body 201, a valve core 202 capable of moving up and down is arranged in the first cavity 2011, the valve core 202 can move up to a position between the first air inlet 2013 and the first air outlet 2014 to seal the first air inlet 2013 and the first air outlet 2014, a valve core position adjusting port 2012 is further formed in the unloading valve body 201, and high-pressure air is introduced into the valve core position adjusting port 2012 to push the valve core 202 to move down, so that the first air inlet 2013 and the first air outlet 2014 are restored to be communicated; the air inlet valve 1 comprises an air inlet valve body 101, a second cavity 1011 is formed inside the air inlet valve body 101, a second air inlet 1012 communicated with the second cavity 1011 is formed in the top of the air inlet valve body 101, a second air outlet 1013 communicated with the second cavity 1011 is formed in the bottom of the air inlet valve body 101, a valve plate 103 capable of moving up and down is arranged in the second cavity 1011, a third cavity 1014 is arranged below the valve plate 103, the position of the valve plate 103 is adjusted by matching the air pressure of outside air, the pressure in the second cavity 1011 and the pressure in the third cavity 1014, so that the on-off between the second air inlet 1012 and the second cavity 1011 is controlled (the valve plate 103 can move up to the second air inlet 1012 and block the second air inlet 1012). The third chamber 1014 is provided with a third air inlet 1015 and a third air outlet 1016, the second air outlet 1013 is connected with a low-pressure air inlet of the compressor 3 through a first air transmission pipeline 11, the first air inlet 2013 is connected with a high-pressure air outlet of the compressor 3 through a third air transmission pipeline 13, the first air outlet 2014 is directly connected with the outside air through an eighth air transmission pipeline 18, the high-pressure air outlet of the compressor 3 is connected with a gas outlet of the air drying and purifying device 5 through a second air transmission pipeline 12, the gas outlet of the air drying and purifying device 5 is connected with a downstream main air pipeline 10, the gas outlet of the air drying and purifying device 5 is also connected with the third air inlet 1015 through a fourth air transmission pipeline 14, the fourth air transmission pipeline 14 is provided with a two-position three-way electromagnetic valve 6, the air inlet of the two-position three-way electromagnetic valve 6 is connected with the gas outlet of the air drying and purifying device 5 through the fourth air transmission pipeline 14, the working port of the two-position three-way electromagnetic valve 6 is connected with the third air inlet 1015 through the fifth air pipeline 15, the exhaust port of the two-position three-way electromagnetic valve 6 is connected with the outside air through the seventh air pipeline 17, the third air outlet 1016 is connected with the valve core position adjusting port 2012 through the sixth air pipeline 16, and the sixth air pipeline 16 is communicated with the first air pipeline 11, so that the third air outlet 1016, the second air outlet 1013 and the valve core position adjusting port 2012 are communicated.
The utility model controls the on-off state of the two-position three-way electromagnetic valve 6 according to the working state of the compressor 3, and further can control the on-off states of the air inlet valve 1 and the unloading valve 2, thereby ensuring the stable operation of the compressor 3 and effectively heating up the lubricating oil in the compressor 3 after compressing the air, and preventing the emulsification of the lubricating oil; in addition, the high-pressure air after the compressor 3 compression can pass through 5 purification treatment of air drying purifier, filters solid particle, fluid and moisture in the high-pressure air, reaches the purpose to high-pressure air purification and drying, and the high-pressure air after 5 processing of air drying purifier can return to the compressor 3 in participate in the compression process to the air, can take away the moisture that exists in the lubricating oil fast, further prevents the emulsification of lubricating oil, promotes the stability of compressor.
Further, two-position two-way valves can be used to replace the two-position three-way electromagnetic valve 6, and the one-two-position two-way valve is arranged between the gas outlet of the air drying and purifying device 5 and the third gas inlet 1015 of the gas inlet valve 1; the gas outlet of the air drying and purifying device 5 is directly connected with the outside air through another two-position two-way valve.
Further, a pressure switch is arranged in the air drying and purifying device 5, and the pressure of the gas passing through the air drying and purifying device 5 is detected in real time through the pressure switch.
In an optional embodiment of the present invention, as shown in fig. 1, a first overflow valve 7 is disposed on the seventh gas transmission pipeline 17, and the gas outlet of the two-position three-way electromagnetic valve 6 is connected to the outside air through the first overflow valve 7. When the pressure in the third chamber 1014 reaches a preset threshold pressure (i.e., the opening pressure of the first relief valve 7 is P)4) When the pressure is high, the first overflow valve 7 is automatically opened (P)4＜P5，P5The maximum allowable pressure of the low-pressure air inlet of the compressor 3), the high-pressure air passing through the air drying and purifying device is discharged to the outside through the fourth air transmission pipeline 14, the two-position three-way electromagnetic valve 6 and the first overflow valve 7 in sequence, so as to ensure that the low-pressure air inlet of the compressor 3 works within the allowable pressure range.
Furthermore, the seventh gas line 17 may be provided with an orifice (i.e., the first relief valve 7 may be replaced with an orifice) through which the low-pressure inlet of the compressor 3 is prevented from being excessively pressurized. The size of the orifice can be determined by combining the structural parameters of the air inlet valve 1 and the volume flow of the compressor 3, so as to ensure that the size of the orifice is such that the high-pressure air returning from the air drying and purifying device 5 enters into the air inlet valve 1 mostly and is discharged out through the orifice.
In an alternative embodiment of the present invention, as shown in fig. 1, a second overflow valve 8 is disposed between the gas outlet of the air drying and purifying device 5 and the downstream main air pipeline 10. By presetting the opening pressure P of the second relief valve 86To ensure that the second overflow valve 8 is in a closed state in the self-cleaning mode state,therefore, high-pressure air purified by the air drying and purifying device 5 cannot continuously flow into the downstream main air pipeline 10, but returns to the compressor 3 to participate in the air compression process, and the dried air can quickly take away moisture in lubricating oil in the compressor 3, so that the effect of preventing the lubricating oil from emulsifying is achieved. Wherein the opening pressure P of the second relief valve 86The following conditions should be satisfied:
opening pressure P of first and second overflow valves 86Greater than the opening pressure P of the first overflow valve 74(i.e., P)6＞P4) To ensure the smooth operation of the self-cleaning mode;
opening pressure P of second and second relief valves 86The pressure value is larger than the action value of the pressure switch, so that the pressure switch always detects the gas pressure in the air drying and purifying device 5 before the second overflow valve 8 is opened;
opening pressure P of third and second overflow valves 86Less than the total wind pressure P when the compressor 3 stops supplying wind12。
Further, as shown in fig. 1, a safety valve 9 is arranged between the gas outlet of the air drying and purifying device 5 and the downstream main air pipeline 10. The safety valve 9 plays a role in protecting the downstream main air pipeline 10, and when the internal pressure of the downstream main air pipeline 10 is too high, the safety valve 9 can be automatically opened to exhaust air.
In an optional embodiment of the present invention, as shown in fig. 1 and 3, a top pillar 203 is disposed at a top middle position of the valve element 202 along a vertical direction, a first spring 204 is disposed between a bottom of the valve element 202 and a bottom inner wall of the first chamber 2011, the valve element position adjusting port 2012 is located above the valve element 202, and the first air inlet 2013 and the first air outlet 2014 are both located above the valve element position adjusting port 2012; the first spring 204 can push the valve core 202 to move upwards, so that the top column 203 is blocked between the first air inlet 2013 and the first air outlet 2014; high-pressure air is introduced into the valve element position adjusting port 2012 (when the downward pressure of the high-pressure air on the valve element 202 is greater than the upward elastic force of the first spring 204 on the valve element), so that the valve element 202 and the top column 203 can be pushed to move downward, and the top column 203 leaves a position for plugging the first air inlet 2013 and the first air outlet 2014, so that the first air inlet 2013 is communicated with the first air outlet 2014.
Further, as shown in fig. 3, a clamping groove is formed in the middle of the bottom of the valve core 202, the upper portion of the first spring 204 is embedded in the clamping groove, the top end of the first spring 204 abuts against the inner wall of the top of the clamping groove, the bottom end of the first spring 204 abuts against the inner wall of the bottom of the first cavity 2011, and the position of the first spring 204 in the first cavity 2011 is located through the clamping groove.
Further, as shown in fig. 3, the top pillar 203 and the valve core 202 may be, but not limited to, integrally formed.
Further, as shown in fig. 3, the outer wall of the valve element 202 is connected with the inner wall of the first chamber 2011 in a sliding and sealing manner, so that the air entering the first chamber 2011 through the valve element position adjusting port can be completely acted on the top surface of the valve element 202, and the valve element 202 is pressed down.
In an optional embodiment of the present invention, as shown in fig. 1 and fig. 2, a piston seat 102 is fixedly disposed in the second chamber 1011, the piston seat 102 is a cylindrical structure disposed along a vertical direction and having two open ends, a bottom opening of the piston seat 102 is communicated with the third chamber 1014, a piston 106 capable of moving up and down is disposed inside the piston seat 102, an outer wall of the piston 106 is connected with an inner wall of the piston seat 102 in a sliding and sealing manner, and the valve plate 103 is disposed at a top of the piston 106. The position of the piston 106 in the vertical direction, and thus the position of the valve plate 103, is controlled by controlling the air pressure into the third chamber 1014.
Further, as shown in fig. 1 and 2, the piston 106 is a cylindrical structure with an open top and a closed bottom, the valve plate 103 is a flat structure, the valve plate 103 is arranged in a horizontal direction (i.e., a transverse direction), a limiting post 104 is connected to the middle of the bottom of the valve plate 103, the limiting post 104 extends into the piston 106 from the open top of the piston 106, a second spring 105 is arranged between the bottom of the limiting post 104 and the inner wall of the bottom of the piston 106, the top end of the second spring 105 is connected to the bottom of the limiting post 104, and the bottom end of the second spring 105 is connected to the inner wall of the bottom of the piston 106.
Further, as shown in fig. 2, the valve plate 103 and the position-limiting column 104 may be, but not limited to, integrally formed.
In an optional embodiment of the present invention, as shown in fig. 1, a cooler 4 is disposed between the high-pressure exhaust port of the compressor 3 and the gas inlet of the air drying and purifying device 5, and the high-pressure air exhausted from the high-pressure exhaust port of the compressor 3 can be cooled by the cooler 4.
In an optional embodiment of the present invention, as shown in fig. 1, the air drying and purifying device 5 includes a pre-filter 501, a dryer 502 and a post-filter 503 connected in sequence along the flow direction of the high pressure air, liquid water, liquid oil and part of suspension oil, solid particles in the high pressure air are filtered by the pre-filter, most of gaseous water in the high pressure air is filtered by the dryer 502, most of suspension oil, part of gaseous oil and most of solid particles generated in the drying process are filtered by the post-filter 503, so that the relative humidity of the high pressure air after being processed by the air drying and purifying device 5 can be reduced to below 30% RH.
Further, the dryer 502 may be, but is not limited to, a double tower dryer.
The utility model discloses a wind regime device for rail vehicle can be in normal air feed, normal air feed shut down back off-load, automatically cleaning and automatically cleaning shut down four kinds of states of back off-load, and it specifically is:
firstly, when the compressor 3 is in a normal air supply state, as shown in fig. 4, the two-position three-way electromagnetic valve 6 is controlled to be powered off and disconnected, and the compressor 3 is in an operating state, the pressure P of the outside air0Greater than the pressure P in the second chamber 10111(i.e., the pressure at the low-pressure air inlet of the compressor 3), the external air enters the second air inlet 1012 and pushes the valve plate 103 to move downward, the air inlet valve 1 is conducted (i.e., the second air inlet 1012 is communicated with the second chamber 1011), the external air enters the compressor 3 through the low-pressure air inlet of the compressor 3 and is compressed, the second overflow valve 8 is opened, and the high-pressure air (with the pressure of P) discharged from the high-pressure air outlet of the compressor 3 is discharged2) Sequentially passes through a cooler 4 and an air drying and purifying device 5 toAnd a second overflow valve 8, and then enters a downstream main air pipeline 10. At this time, the valve body 202 of the unloading valve 2 is positioned to block the first air inlet 2013 and the first air outlet 2014 by the elastic force of the first spring 204, and the unloading valve 2 is in a closed state.
When the compressor 3 is in the unloading state after normal air supply shutdown, as shown in fig. 5, the two-position three-way electromagnetic valve 6 is controlled to be powered off and disconnected, and the compressor 3 is in the shutdown state, the second overflow valve 8 is closed, and the first part of high-pressure air (with the pressure of P) in the compressor 3 is generated2) Back into the second chamber 1011 through the second outlet 1013 and pushing the valve plate 103 upwards until the inlet valve 1 is closed; the second part of the high-pressure gas (pressure P) in the compressor 32) Enters the first chamber 2011 through the valve core position adjusting port 2012, the second part of high-pressure air overcomes the elastic force of the first spring 204 and pushes the valve core 202 to move downwards, the first air inlet 2013 is communicated with the first air outlet 2014, and the third part of high-pressure air (with the pressure of P) in the compressor 3 is2) Directly discharged from a high-pressure exhaust port of the compressor 3, and then discharged to the outside through the first air inlet 2013 and the first air outlet 2014 of the unloading valve 2 in sequence.
Thirdly, when the compressor 3 is in the self-cleaning state, as shown in fig. 6, the two-position three-way electromagnetic valve 6 is controlled to be electrically conducted, and in the operating state of the compressor 3, the high-pressure exhaust port of the air drying and purifying device 5 is respectively communicated with the third chamber 1014 and the outside air through the two-position three-way electromagnetic valve 6, and when the compressor 3 operates, the air pressure P in the second chamber 1011 is1 blankIs less than the opening pressure P of the second overflow valve 86The second overflow valve 8 is in a closed state, the compressor 3 does not supply air to the downstream main air pipeline 10, high-pressure air treated by the air drying and purifying device 5 sequentially passes through the two-position three-way solenoid valve 6, the third air inlet 1015, the third chamber 1014 and the third air outlet 1016, and enters the low-pressure air inlet of the compressor 3 together with air in the second chamber 1011, at the moment, the valve element 202 of the unloading valve 2 is positioned at a position for plugging the first air inlet 2013 and the first air outlet 2014 under the action of the elastic force of the first spring 204, and the unloading valve 2 is in a closed state; pressure of high pressure air in the third chamber 1014 in the self-cleaning modeP3 emptySlightly greater than the ambient air pressure P0The piston 106 and the valve plate 103 are pushed to move upwards integrally under the pressure action of the high-pressure air in the third chamber 1014, the communicating space between the second air inlet 1012 and the second chamber 1011 is reduced, the amount of the external air entering the second chamber 1011 from the outside is gradually reduced, the downward pressure of the external air on the valve plate 103 is balanced with the upward thrust of the high-pressure air in the third chamber 1014 on the valve plate 103, and the high-pressure air processed by the air drying and purifying device 5 can return to the compressor 3 to participate in the air compression process, so that the moisture in the lubricating oil can be taken away quickly, and the emulsification of the lubricating oil is effectively prevented.
Pressure P of the high pressure air in the third chamber 1014 during the self-cleaning of the compressor 3 in normal conditions3 emptyIs less than the opening pressure P of the first overflow valve 74All the high-pressure air treated by the air drying and purifying device 5 enters the first chamber 2011 of the unloading valve 2; if the pressure P of the high pressure air in the third chamber 10143 emptyGreater than the opening pressure P of the first overflow valve 74If the pressure of the low-pressure air inlet of the compressor 3 is lower than the maximum allowable pressure P of the low-pressure air inlet of the compressor 3, the first overflow valve 7 is automatically opened, and the high-pressure air treated by the air drying and purifying device 5 is discharged outside through the fourth air transmission pipeline 14, the two-position three-way electromagnetic valve 6 and the first overflow valve 7 in sequence, so that the pressure of the low-pressure air inlet of the compressor 3 is ensured to be lower than the maximum allowable pressure P of the low-pressure air inlet of the compressor 35To ensure the compressor 3 to enter the normal air supply state at any time.
Fourthly, when the compressor 3 is in the self-cleaning unloading state after shutdown, the same way as the compressor 3 is in the unloading state after normal air supply shutdown, as shown in fig. 7, when the two-position three-way electromagnetic valve 6 is controlled to be disconnected in a power-off mode and the compressor 3 is in the shutdown state, the second overflow valve 8 is closed, and the first part of high-pressure air (with the pressure of P) in the compressor 3 is generated2 empty) Back into the second chamber 1011 through the second outlet 1013 and pushing the valve plate 103 upwards until the inlet valve 1 is closed; the second part of the high-pressure gas (pressure P) in the compressor 32 empty) Entering the first chamber 2011 through the valve core position adjusting port 2012, the second part of the high-pressure gas overcomes the elastic force of the first spring 204 and pushes the valve core202 move downward (pressure P of the second portion of high pressure gas)2 emptyGreater than the elastic force of the first spring 204), the first air inlet 2013 communicates with the first air outlet 2014, and a third portion of high-pressure air (pressure P) in the compressor 32 empty) Directly discharged from a high-pressure exhaust port of the compressor 3, and then discharged to the outside through the first air inlet 2013 and the first air outlet 2014 of the unloading valve 2 in sequence.
The utility model discloses a wind regime device for rail vehicle's characteristics and advantage are:
the air source device for the railway vehicle can control the on-off state of the two-position three-way electromagnetic valve 6 according to the working state of the compressor 3, further regulate and control the on-off states of the air inlet valve 1 and the unloading valve 2, guarantee the stable operation of the compressor 3 and effectively heat lubricating oil in the compressor 3 after air compression, and prevent the emulsification of the lubricating oil.
Two, this wind regime device for rail vehicle can pass through 5 purification treatment of air drying purifier through the highly-compressed air after compressor 3 compresses, filter the solid particle in the highly-compressed air, fluid and moisture, reach the purpose to highly-compressed air purification and drying, highly-compressed air after 5 processing of air drying purifier can return to compressor 3 in participate in the compression process to the air, can take away the moisture that exists in the lubricating oil fast, prevent the emulsification of lubricating oil, promote the stability of compressor.
Second embodiment
The utility model provides a rail vehicle is with air feed system, this rail vehicle is with air feed system include two foretell rail vehicle with wind regime devices, and two rail vehicle are with wind regime devices all set up in rail vehicle. The two rail vehicle air source devices can be respectively used as a main air source device and an auxiliary air source device to alternately work (namely, on a single working day, one rail vehicle air source device is used as the main air source device to work, the other rail vehicle air source device is used as the auxiliary air source device to be reserved, and on a double working day, the two rail vehicle air source devices are used interchangeably).
The utility model discloses a characteristics and advantage of air feed system for rail vehicle are:
the air supply system for the railway vehicle compresses air through matching of the two air source devices for the railway vehicle and supplies air to the vehicle. When the air source device for the railway vehicle does not need to supply air to the vehicle, the air source device for the railway vehicle is controlled to enter a self-cleaning mode so as to lift the temperature of lubricating oil, and when the air source device for the railway vehicle is started next time, the temperature of the lubricating oil in the compressor is kept in a higher state, so that the temperature of compressed air can be quickly raised, and the risk of lubricating oil emulsification is effectively reduced. In addition, once the lubricating oil is emulsified, the air source device for the railway vehicle is in a self-cleaning mode, high-pressure air dried and filtered by the air drying and purifying device 5 can flow back into the compressor to participate in the compression process, and water in the lubricating oil can be quickly taken away, so that the problem of lubricating oil emulsification is solved.
Compared with the traditional reciprocating piston type oil-free air source device, the air supply system for the railway vehicle has the advantages that the air source device for the railway vehicle can be used for carrying out dust removal, oil removal and drying treatment on high-pressure air by using the air drying and purifying device 5 in a self-cleaning mode; on the other hand, the high-pressure air which flows back into the compressor after being dried can timely dry the residual moisture in the piston cylinder of the compressor, and the friction and wear environment between the self-lubricating piston ring and the wall of the piston cylinder is improved, so that the stability of the compressor is improved, and the long-term normal operation of the rail vehicle is ensured.
The air supply system for the rail vehicle can realize normal air supply and self-cleaning control of the vehicle, the whole process is controlled automatically, manual operation is not needed, labor cost is reduced, and working efficiency is improved.
Fourth, this air feed system for rail vehicle can effectively prevent the problem of lubricating oil emulsification in the compressor 3, guarantees that vehicle wind regime device can long-term, normal work.
Fifthly, the air supply system for the railway vehicle can rapidly remove water separated out from the compressor 3 under the condition that the lubricating oil has emulsification problems, so that the problem of lubricating oil emulsification is solved under a self-cleaning mode.
Sixth, this air feed system for rail vehicle can be with the high-pressure air input to the unloading valve 2 after the compression in, the compressed air volume of direct discharge to the external world significantly reduces to reduce the noise that the compressed air is arranged the in-process outward and produce, avoid causing the influence to staff's normal work around.
Seventhly, the air supply system for the railway vehicle cannot reduce the capacity of the air supply device for supplying air to the vehicle, so that the risk of insufficient wind supply energy cannot be generated, and normal air supply to the vehicle is guaranteed.
Eighthly, the air supply system for the railway vehicle can effectively improve the frictional wear environment between the piston ring and the piston cylinder wall in the compressor 3, ensure stable air displacement and prolong the service life of the compressor 3.
Ninthly, in the running process of the air supply system for the railway vehicle, the water content of the compressed air entering the dryer 502 is low, the load of the dryer 502 is small, and meanwhile, part of dust in the dryer 502 can be discharged to the outside by utilizing the regeneration function of the double-tower dryer.
Third embodiment
The utility model provides a wind regime automatically cleaning method for rail vehicle suitable for this air feed system for rail vehicle in implementation side two, this wind regime automatically cleaning method for rail vehicle includes following step:
step S1: and confirming whether the wind source device for the two rail vehicles is in a normal working state on the day. If the air source devices for the two railway vehicles are in a normal working state, only the main air source device is allowed to enter a cleaning state on the same day; if the main wind source device fails, allowing the auxiliary wind source device to enter a self-cleaning state;
step S2: monitoring the total wind pressure in the vehicle total wind pipeline in real time, and comparing the total wind pressure with a preset first total wind pressure P11Comparing, if the total wind pressure in the vehicle total wind pipeline is less than the first total wind pressure P11Then, the wind source device for the rail vehicle is started to supply wind normally to the vehicle, and the total wind pressure of the wind supplied to the total wind pipeline of the vehicle is equal to the preset second total wind pressure P12Then, recording the running time of the wind source device for the railway vehicle as a first time t1；
Step S3:a first time t1And a second time t2A comparison is made, wherein the second time t2Generally set to 2min to 10 min;
step S4: if the first time t1Less than the second time t2(i.e.: t)1＜t2) Controlling the wind source device for the rail vehicle to enter a self-cleaning state and operating for a fifth time t5(i.e.: t)2-t1) Then stopping the machine; if the first time t1Greater than or equal to the second time t2(i.e.: t)1≥t2) Controlling the wind source device for the rail vehicle to directly enter a shutdown state;
wherein: the first time t1Determined by the actual recording time; a second time t2Is the self-setting time; a fifth time t5From the second time t2Minus the first time t1Determining; first total wind pressure P11For the preset total wind pressure when the wind source device for the railway vehicle starts to supply wind, the first total wind pressure P11Typically 750kPa to 800 kPa; second total wind pressure P12The preset total wind pressure when the wind source device for the railway vehicle stops supplying wind and the second total wind pressure P12Typically 900kPa to 950 kPa.
In an optional embodiment of the present invention, in the time period of passenger transportation, the wind source self-cleaning method for rail vehicles further comprises,
step S5: in the passenger transport time period, if the wind source device for the railway vehicle is in the power-on state and the downtime of the wind source device for the railway vehicle is more than the third time t3Controlling the wind source device for the railway vehicle to enter a self-cleaning state;
step S6: after the wind source device for the railway vehicle enters the self-cleaning state, if the running time of the wind source device for the railway vehicle in the self-cleaning state is greater than the fourth time t4When the wind source device is used, the wind source device for the railway vehicle is controlled to stop; if the total wind pressure in the vehicle total wind pipeline is less than the first total wind pressure P11When the self-cleaning wind source device is in the normal wind supply mode, the wind source device for the railway vehicle is controlled to exit the self-cleaning mode;
wherein the third time t3Generally set to 15min to 60min, the fourth time t4Generally set to 20min to 40 min; the passenger traffic time period is 6 am to 22 pm each day.
In an optional embodiment of the present invention, during the operation process according to steps 1 to 6, the emulsification of the lubricant in the compressor 3 can be effectively prevented, and the probability of the emulsification of the lubricant is very low. If the lubricating oil in the compressor 3 is emulsified, the elimination can be carried out by the following method: firstly, whether the emulsification condition of the lubricating oil is serious is observed, if the emulsification condition is serious, an oil discharge valve of the compressor 3 is opened, the moisture stored at the bottom of an oil-gas barrel of the compressor 3 is discharged, then the air source device for the railway vehicle is started to enter a self-cleaning state, and the high-pressure air after purification and drying treatment is returned to the compressor 3 to quickly absorb the separated moisture until the emulsification condition of the lubricating oil is eliminated. If the emulsification condition is not serious, the air source device for the railway vehicle can be directly started to enter a self-cleaning state without opening the oil discharge and water drainage first. However, in the prior art, if the lubricating oil in the compressor 3 is emulsified, the valve of the downstream main air pipeline 10 or the air reservoir valve needs to be opened to exhaust air, so as to reduce the total air pressure in the vehicle main air pipeline to the first total air pressure P11After, control compressor 3 starts and gets into normal air feed state to continuous operation is in order to reach the purpose that prevents the lubricating oil emulsification under normal air feed state, and this process is complex operation not only, and the noise that produces when compressor 3 normal air feed state is externally discharged is great moreover, can influence the normal work of staff around (workshop).
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (15)
1. An air supply device for a rail vehicle, characterized in that, the air supply device for a rail vehicle includes admission valve and unloading valve, wherein:
the unloading valve comprises an unloading valve body, a first cavity is formed inside the unloading valve body, a first air inlet and a first air outlet which are communicated with each other are formed in the unloading valve body, a valve core which can move upwards to be plugged between the first air inlet and the first air outlet is arranged in the first cavity, and a valve core position adjusting port which can control the valve core to move downwards to enable the first air inlet and the first air outlet to be restored to a communicated state is further formed in the unloading valve body;
the air inlet valve comprises an air inlet valve body, a second chamber is formed inside the air inlet valve body, a second air inlet and a second air outlet which are communicated with the second chamber are formed in the air inlet valve body, a valve plate capable of moving up and down is arranged in the second chamber, a third chamber is arranged below the valve plate, the position of the valve plate is adjusted by matching the air pressure of outside air, the pressure in the second chamber and the pressure in the third chamber to control the on-off between the second air inlet and the second chamber, a third air inlet and a third air outlet are arranged on the third chamber, the third air outlet, the second air outlet and the valve core position adjusting port are communicated, and the second air outlet and the first air inlet are respectively connected with a low-pressure air inlet of the compressor and a high-pressure air outlet of the compressor, the high-pressure exhaust port of the compressor is connected with the gas inlet of the air drying and purifying device, the gas outlet of the air drying and purifying device is respectively connected with the third gas inlet and the downstream main air pipeline, and a two-position three-way electromagnetic valve is arranged between the air drying and purifying device and the third gas inlet.
2. The wind source device according to claim 1, wherein when the two-position three-way solenoid valve is de-energized and turned off, and the compressor is in an operating state, external air enters the second air inlet and pushes the valve plate to move down, the air inlet valve is turned on, the external air enters the compressor through the low-pressure air inlet of the compressor and is compressed, and high-pressure air discharged from the high-pressure air outlet of the compressor enters the downstream main air pipeline after passing through the air drying and purifying device.
3. The wind source device for the railway vehicle according to claim 1, wherein in a state where the two-position three-way solenoid valve is de-energized and turned off and the compressor is stopped, a first portion of high-pressure air in the compressor flows back into the second chamber through the second air outlet and pushes the valve plate to move upward until the air inlet valve is closed; and a second part of high-pressure air in the compressor enters the first cavity through the valve core position adjusting port and pushes the valve core to move downwards, the first air inlet is communicated with the first air outlet, and a third part of high-pressure air in the compressor is discharged outwards through the first air inlet and the first air outlet in sequence.
4. The wind source device for the rail vehicle according to claim 1, wherein when the two-position three-way solenoid valve is electrically conducted and the compressor is in operation, high-pressure air passing through the air drying and purifying device sequentially passes through the two-position three-way solenoid valve, the third air inlet, the third chamber, the third air outlet and the valve element position adjusting port and enters the first chamber; and the high-pressure air in the third chamber pushes the valve plate to move upwards, and the pressure of the outside air on the valve plate is balanced with the thrust of the high-pressure air in the third chamber on the valve plate.
5. The wind source apparatus for a railway vehicle according to claim 4, wherein when the pressure in the third chamber reaches a predetermined threshold pressure, the high-pressure air passing through the air drying and purifying apparatus is externally discharged through the two-position three-way solenoid valve.
6. The wind source device for the railway vehicle according to claim 1, wherein a top pillar is disposed on a top of the valve body, a first spring is disposed between a bottom of the valve body and a bottom inner wall of the first chamber, the valve body position adjusting port is located above the valve body, and the first air inlet port and the first air outlet port are located above the valve body position adjusting port;
the first spring can push the valve core to move upwards so that the top column is blocked between the first air inlet and the first air outlet;
air is introduced into the valve core position adjusting port to push the valve core and the top column to move downwards, so that the first air inlet is communicated with the first air outlet.
7. The wind source apparatus for a railway vehicle according to claim 6, wherein the outer wall of the valve body is slidably and hermetically connected with the inner wall of the first chamber.
8. The wind source device for the rail vehicle according to claim 1, wherein a piston seat is disposed in the second chamber, the piston seat is vertically disposed and has a cylindrical structure with two open ends, the bottom opening of the piston seat is communicated with the third chamber, a piston capable of moving up and down is disposed in the piston seat, the outer wall of the piston is connected with the inner wall of the piston seat in a sliding and sealing manner, and the valve plate is disposed on the top of the piston.
9. The wind source device for the railway vehicle as claimed in claim 8, wherein the piston is a vertically arranged cylindrical structure with an open top and a closed bottom, the valve plate is a horizontally arranged flat structure, a limiting column is connected to the bottom of the valve plate, the limiting column extends into the piston from the open top of the piston, and a second spring is arranged between the bottom of the limiting column and the inner wall of the bottom of the piston.
10. The wind source apparatus for a railway vehicle according to claim 1, wherein a cooler is provided between the high pressure discharge port of the compressor and the gas inlet of the air drying and purifying device.
11. The wind source apparatus for a railway vehicle according to claim 1 or 10, wherein a second relief valve and a safety valve are provided between the gas outlet of the air drying and purifying device and the downstream main wind pipe.
12. The wind source device for the rail vehicle according to claim 11, wherein an air inlet of the two-position three-way solenoid valve is connected to an air outlet of the air drying and purifying device, a working port of the two-position three-way solenoid valve is connected to the third air inlet, and an air outlet of the two-position three-way solenoid valve is connected to outside air.
13. The wind source device for the railway vehicle according to claim 12, wherein the exhaust port of the two-position three-way solenoid valve is connected to the outside air through a first relief valve or a throttle hole.
14. The wind source apparatus for a railway vehicle according to claim 1, wherein the air drying and purifying apparatus comprises a pre-filter, a dryer, and a post-filter, and the pre-filter, the dryer, and the post-filter are connected in series in a flow direction of the high pressure air.
15. An air supply system for a rail vehicle, characterized in that the air supply system for a rail vehicle comprises two rail vehicle air source devices according to any one of claims 1 to 14, both of which are arranged in a rail vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120109309.XU CN214384188U (en) | 2021-01-15 | 2021-01-15 | Wind source device and air supply system for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120109309.XU CN214384188U (en) | 2021-01-15 | 2021-01-15 | Wind source device and air supply system for railway vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN214384188U true CN214384188U (en) | 2021-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120109309.XU Active CN214384188U (en) | 2021-01-15 | 2021-01-15 | Wind source device and air supply system for railway vehicle |
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| CN (1) | CN214384188U (en) |
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2021
- 2021-01-15 CN CN202120109309.XU patent/CN214384188U/en active Active
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