CN105822531B - Using the electric braking air compressor system start-up and shut-down control method for improving combined drying - Google Patents
Using the electric braking air compressor system start-up and shut-down control method for improving combined drying Download PDFInfo
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- CN105822531B CN105822531B CN201610298688.5A CN201610298688A CN105822531B CN 105822531 B CN105822531 B CN 105822531B CN 201610298688 A CN201610298688 A CN 201610298688A CN 105822531 B CN105822531 B CN 105822531B
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- 238000001035 drying Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010926 purge Methods 0.000 claims abstract description 10
- 230000008929 regeneration Effects 0.000 claims description 15
- 238000011069 regeneration method Methods 0.000 claims description 15
- 230000001172 regenerating effect Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 230000005520 electrodynamics Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 241000486406 Trachea Species 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 210000003437 trachea Anatomy 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Gases (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses belong to a kind of using the electric braking air compressor system start-up and shut-down control method for improving combined drying of pure electric vehicle brake control art, by improving the gas circuit structure inside conventional combination drier, drawing can reflect that the air pressure signal of drier working condition carrys out actuating pressure switch, then the start and stop of pressure switch signal control electric braking air compressor are utilized, it is achieved thereby that the Synchronization Control of air compressor machine start and stop and the action of drier off-load purging, both electric energy has been saved, service behaviour and the life-span of drier have been effectively ensured again, this method realizes the synchronization of start and stop and the action of drier off-load purging of electric braking air compressor from principle, with simple in construction, easily implement, cost is low, the advantages that dependable performance, especially suitable for all kinds of pure electric commercial vehicles and extended-range commercial car using air-pressure brake mode；There is important engineering application value to the reliability and life-span for improving Pneumatic braking system.
Description
Technical field
It is more particularly to a kind of using the electricity for improving combined drying the invention belongs to pure electric vehicle brake control art
Dynamic brake air compressor system start-up and shut-down control method, specifically, this method is applied to using all kinds of pure electronic of air-pressure brake mode
Commercial car and extended-range commercial car.
Background technology
Generally all driven using the brake air compressor of the traditional combustion engine automobile of air-pressure brake mode by internal combustion engine, work as vehicle
When the pressure of gas receiver reaches highest set value, due to internal combustion engine because driving needs can not be shut down, so pressure regulator valve can only be passed through
In relief arrangement by air compressor machine output pipe connection air unloaded, and brake air compressor still by internal combustion engine with sky
Turn, at the same time the compressed air in regeneration gas receiver, which is directed in drier, carries out blowback to activate activity of water absorption therein
Material, it is ready to inflate again next time.
And in pure electric commercial vehicle and the extended-range commercial car using air-pressure brake mode, brake air compressor is changed to by auxiliary
After helping motor to drive so that the motor of brake air compressor decouples with vehicle drive system, so as to using start stop mode
To be controlled to electric braking air compressor.That is when gas receiver pressure is less than highest set value, electrodynamic braking pneumatics
Machine continuous firing, to gas receiver pump gas, when gas receiver pressure reaches highest set value, pressure regulator valve off-load, while regenerate storage
Compressed air in inflator, which is directed in drier, carries out blowback to activate activity of water absorption material therein, at the same time electronic
Brake air compressor is shut down；When gas receiver pressure drops to when returning pass pressure of pressure regulator valve, the exhaust close of drier, electronic system
Dynamic air compressor machine restarting recovers pump gas process.
But the electric braking air compressor of many pure electric commercial vehicle and extended-range commercial car is past in design in the market
Toward using pressure sensor or pressure switch is installed on gas receiver, realized using pressure sensor or the signal of pressure switch
The start-up and shut-down control of air compressor machine, due to pressure regulator valve in pressure sensor or the pressure control point and complex dryer of pressure switch
Pressure unloading control point is often inconsistent, asynchronous so as to easily cause the start and stop of air compressor machine and drier off-load action, causes
Following two adverse consequences：First, drier produces (while drier purging) after off-load action but electric braking air compressor does not stop
Machine, electric braking air compressor idle running is caused to consume electric energy in vain；Second, electric braking air compressor is shut down but drier does not purge, pass through
After a period of time, because drier activity absorbent material cannot activate and scrap, brake line and valve are also resulted in
Large quantity of moisture and greasy dirt are infiltrated in part, reduces reliability and the life-span of brakes.For current pure electric commercial vehicle and increasing
The start-up and shut-down control of electric braking air compressor and drier off-load purging act nonsynchronous problem in formula commercial car, and the present invention carries
Go out a kind of using the electric braking air compressor start-up and shut-down control method of modified combined drying to be overcome.
The content of the invention
The purpose of the present invention is to propose to a kind of using the electric braking air compressor system start and stop control for improving combined drying
Method processed, it is characterised in that it is described using improve combined drying electric braking air compressor system by electric braking air compressor,
Inverter, modified complex dryer, regeneration gas receiver, four-loop protection valve and gas receiver composition；Wherein air compressor machine drives
Motor 1 is combined into electric braking air compressor with air compressor machine 2, and air compressor machine 2 is connected to modified combined type through air compressor machine appendix 3 and done
On dry device 4, modified complex dryer 4 is by regenerating gas receiver air inlet pipe 5 and drier appendix 7 respectively with regenerating gas storage
Cylinder 6 and four-loop protection valve 8 are connected, and four-loop protection valve 8 is connected by tracheae 9 with gas receiver 10；Modified combined drying
Pressure switch 11 is installed on the port 40 of device 4, its output end is connected to the control port 13 of inverter 14 by control line 12
On；Inverter 14 is powered by HVDC supply port 15, is that three-phase alternating current supplies through three-phase output line 16 by DC inverter
To air compressor driving motor 1.
The structure of the modified combined drying around drying 21 and is pushed up to fix drying 21 in shell 22
Portion is circular passage 20, and filter core 19 is fixed on the bottom of circular passage 20, the lower end of drying 21 connection drier C chambers and funnel-form D
Chamber, drier C chambers upper end are fixed with the lower end of circular passage 20, are communicated by filter core 19 with drying 21；Air inlet 18 is arranged on
The drier C chambers left side；The upper end of escape pipe 26 is connected to funnel-form D chambers lower end, and the horizontal segment first half of escape pipe 26 is arranged to throttle
Hole 23, throttle orifice 23 communicate with regeneration gas receiver port 24；Check valve 25 is installed in the horizontal segment lower half of escape pipe 26,；Outlet
F chambers, A chambers and E chambers are arranged to below the horizontal segment of pipe 26 from left to right；F chambers and drier C chambers communicate, F chambers top by piston 38 and
Piston packing 37 is separated out B chambers, and A chambers and E chambers are separated by rubber cup 29；Y words duct is by B chambers, A chambers and installs pressure switch 11
Port 40 connect；Small duct 27 is set to connect escape pipe 26 with A chambers with the junction of check valve 25 in escape pipe 26；B chambers are also
Connected by duct 39 with port 40；Screw press 28 is installed on the right of E chambers.
The left side of the F chambers sets pressure switch port 40, the following setting exhaust outlet 36 of F chambers, and drain tap 35 is installed
In F intracavitary, piston 38 is connected with drain tap 35.
Bypath valve 31, unloading control valve 33 and side are installed on the medium pore of the rubber cup 29 of the separation A chambers and E chambers
Port valve door 31 is co-axially mounted, and spring supporting is used between unloading control valve 33 and rubber cup 29；In the rubber cup 29 and tune of E intracavitary
Spring supporting is also used between pressure screw rod 28；By-pass duct 32 connects E chambers with F chambers.
The electric braking air compressor system start-up and shut-down control method using improvement combined drying；From air compressor machine 2
Compressed air is entered the C chambers of modified combined drying 4 by air inlet 18, due to the decline of compressed air own temperature, can be produced
First portion condensed water, it is deposited at drain tap 35.The fine filtrator of the improved type combined drying 4 of compressed air stream of C chambers
19, and by the top of the arrival modified combined drying of circular passage 20 4, the moisture quilt when compressed air flows through drying 21
Adsorb and be detained in its surface, dried compressed air reaches funnel-form D chambers, is exported through escape pipe 26 and check valve 25.
The Partial shrinkage air of funnel-form D chambers is entered through throttle orifice 23 by regenerating gas receiver port 24, regenerating gas receiver air inlet pipe 5 simultaneously
Enter to regenerate gas receiver 6；A part of compressed air into escape pipe 26 is small through being set in escape pipe 26 and the junction of check valve 25
Duct 27 reaches A chambers；When A cavity pressures are less than design load (being usually 810 ± 20kPa), unloading control valve 33, which is in, closes
State, tappet 30 are jacked up, and bypath valve 31 is in opening, and B chambers pass through Y words duct 34, bypath valve 31, E chambers, bypass
Duct 32, F chambers and atmosphere, so now B chambers are atmospheric pressure state, B chambers also pass through duct 39 and installation pressure switch 11
Port 40 connects, therefore pressure switch 11 (the high disconnected type of low pass) is in the conduction state, and the conducting state can control the work of inverter 14
Make, so that electric braking air compressor is in pump gas working condition, so now complex dryer is in pump gas state.Work as A
When cavity pressure reaches design load (being usually 810 ± 20kPa), the rubber cup 29 of A chamber right parts overcomes the precompression of spring to move to right, and unloads
Lotus control valve 33 moves to right opening, and tappet 30 is shot back, and bypath valve 31 is closed, and B chambers are connected by Y words duct 34 with A chambers, institute
Using now B chambers as high pressure conditions, B cavity pressures promote piston 38 to move down, and drain tap 35 is opened, and C chamber mesohigh air is through opening
Valve 35, F chambers and exhaust outlet 36 be discharged into air, at the same time, regenerate gas receiver 6 in drying compressed air through regeneration store up
Inflator port 24, throttle orifice 23 flow to rapidly the funnel-form D chambers of the bottom of modified combined drying 4, flow through drying from bottom to top
Cylinder 21, the moisture being trapped on drier is taken away, is discharged into through circular passage 20, C chambers, drain tap 35, F chambers from exhaust outlet 36
Air, now combined drying 4 be in unloading condition；The compressed air of other B chambers is entered by Y words duct 34, duct 39
At the port 40 for installing pressure switch 11, therefore pressure switch 11 is off, and then inverter is stopped, pneumatics
Machine stops pump gas；
Above-mentioned principle is by behind the increase duct 39 inside modified complex dryer 4, will just install pressure switch
11 port 40 is connected with B chambers and A chambers respectively by duct 39 and Y words duct 34, so installs the port 40 of pressure switch 11
The pressure size at place just directly strictly associates with the pump gas and unloading condition of complex dryer, is thus solved from principle
Determined electric braking air compressor start and stop and drier off-load purging action stationary problem.
The pressure switch 11 is the high disconnected type of low pass.
The beneficial effect of this invention is by increasing connected pore channel inside modified complex dryer, improving tradition
Gas circuit structure inside combined drying, drawing can reflect that the air pressure signal of drier working condition carrys out driving pressure switch,
Then using the start and stop of pressure switch signal control electric braking air compressor, it is achieved thereby that air compressor machine start and stop and drier off-load
The Synchronization Control of purging action, has both saved power consumption, service behaviour and the life-span of drier has been effectively ensured again, the present invention
Popularization and application to improve pure electric commercial vehicle and extended-range commercial car Pneumatic braking system reliability and the life-span have
There is important engineering application value.The present invention has the advantages that simple in construction, easy implementation, cost is low, dependable performance.
Brief description of the drawings
Fig. 1 is the electric braking air compressor structure and control principle schematic diagram using modified combined drying；It is real in figure
Heart arrow represents pump gas state；Hollow arrow represents unloading condition.
Fig. 2 is modified combined drying structural representation；Filled arrows represent pump gas state in figure；Hollow arrow represents
Unloading condition.
Embodiment
The present invention proposes a kind of electric braking air compressor system start-up and shut-down control method using improvement combined drying, under
Face is explained with reference to accompanying drawing.
As shown in Figure 1 is illustrated using the electric braking air compressor system architecture and control principle of improving combined drying
Figure；Filled arrows represent pump gas state in figure；Hollow arrow represents unloading condition.Using shown in figure improves combined drying
Electric braking air compressor system by electric braking air compressor, inverter, modified complex dryer, regeneration gas receiver, four
Loop protection valve and gas receiver composition；Wherein air compressor driving motor 1 is combined into electric braking air compressor, pneumatics with air compressor machine 2
Machine 2 is connected on modified complex dryer 4 through air compressor machine appendix 3, and modified complex dryer 4 is by regenerating gas storage
Cylinder air inlet pipe 5 and drier appendix 7 are connected with regeneration gas receiver 6 and four-loop protection valve 8 respectively, and four-loop protection valve 8 is logical
Tracheae 9 is crossed to be connected with gas receiver 10；Pressure switch 11 is installed on the port 40 of modified complex dryer 4, its output end
It is connected to by control line 12 in the control port 13 of inverter 14；Inverter 14 is powered by HVDC supply port 15, will
DC inverter is that three-phase alternating current supplies air compressor driving motor 1 through three-phase output line 16.
In the modified combined drying structural representation shown in Fig. 2, filled arrows represent pump gas state；Hollow arrow
Represent unloading condition.The structure of its modified combined drying is fixes drying 21 in shell 22, around drying 21
And top is circular passage 20, filter core 19 is fixed on the bottom of circular passage 20, the lower end of drying 21 connection drier C chambers and funnel
Shape D chambers, drier C chambers upper end are fixed with the lower end of circular passage 20, are communicated by filter core 19 with drying 21；Air inlet 18 is set
On the drier C chambers left side；The upper end of escape pipe 26 is connected to funnel-form D chambers lower end, and the horizontal segment first half of escape pipe 26 is arranged to save
Discharge orifice 23, throttle orifice 23 communicate with regeneration gas receiver port 24；Check valve 25 is installed in the horizontal segment lower half of escape pipe 26,；Go out
F chambers, A chambers and E chambers are arranged to below the horizontal segment of tracheae 26 from left to right；F chambers and drier C chambers communicate, and F chambers top is by piston 38
And piston packing 37 is separated out B chambers, A chambers and E chambers are separated by rubber cup 29；Y words duct is by B chambers, A chambers and installs pressure switch
11 port 40 connects；Small duct 27 is set to connect escape pipe 26 with A chambers with the junction of check valve 25 in escape pipe 26；B chambers
Also connected by duct 39 with installing the port 40 of pressure switch 11；Screw press 28 is installed on the right of E chambers.On a left side for F chambers
Side sets port 40；The following setting exhaust outlet 36 of F chambers, drain tap 35 are arranged on F intracavitary, and piston 38 connects with drain tap 35
Connect.
Bypath valve 31 is installed on the medium pore of rubber cup 29, unloading control valve 33 is coaxially pacified with bypath valve 31
Dress, spring supporting is used between unloading control valve 33 and rubber cup 29；Between the rubber cup 29 and screw press 28 of E intracavitary
Use spring supporting；By-pass duct 32；E chambers are connected with F chambers.
The start-up and shut-down control principle of the electric braking air compressor using modified combined drying as shown in Figure 1, 2：Come from
The compressed air of air compressor machine 2 is entered the C chambers of modified combined drying 4 by air inlet 18, due to compressed air own temperature
Decline, part condensed water can be produced, be deposited at drain tap 35.The improved type combined drying 4 of compressed air stream of C chambers
Fine filtrator 19, and by the top of the arrival modified combined drying of circular passage 20 4, when compressed air flows through drying 21
Shi Shuifen is adsorbed and is detained in its surface, and dried compressed air reaches funnel-form D chambers, through escape pipe 26 and check valve
25 outputs.The Partial shrinkage air of funnel-form D chambers is entered through throttle orifice 23 by regenerating gas receiver port 24, regenerating gas receiver simultaneously
Tracheae 5 enters regeneration gas receiver 6；A part of compressed air into escape pipe 26 is passed through in escape pipe 26 and the junction of check valve 25
Small duct 27 is set to reach A chambers；When A cavity pressures are less than design load (being usually 810 ± 20kPa), at unloading control valve 33
In closed mode, tappet 30 is jacked up, and bypath valve 31 is in opening, and B chambers pass through Y words duct 34, bypath valve 31, E
Chamber, by-pass duct 32, F chambers and atmosphere, so now B chambers are atmospheric pressure state, B chambers also pass through duct 39 and pressure switch 11
Port 40 connects, therefore pressure switch 11 (the high disconnected type of low pass) is in the conduction state, and the conducting state can control the work of inverter 14
Make, so that electric braking air compressor is in pump gas working condition, so now complex dryer is in pump gas state.Work as A
When cavity pressure reaches design load (being usually 810 ± 20kPa), the rubber cup 29 of A chamber right parts overcomes the precompression of spring 17 to move to right,
Unloading control valve 33 moves to right opening, and tappet 30 is shot back, and bypath valve 31 is closed, and B chambers are connected by Y words duct 34 with A chambers,
So now B chambers are high pressure conditions, B cavity pressures promote piston 38 to move down, and drain tap 35 is opened, and C chamber mesohighs air is through beating
Valve 35, F chambers and the exhaust outlet 36 opened are discharged into air, at the same time, regenerate the drying compressed air in gas receiver 6 through regeneration
Gas receiver port 24, throttle orifice 23 flow to rapidly the funnel-form D chambers of the bottom of modified combined drying 4, flow through from bottom to top dry
Dry cylinder 21, the moisture being trapped on drier is taken away, through circular passage 20, C chambers, drain tap 35, F chambers from the row of exhaust outlet 36
Enter air, now combined drying 4 is in unloading condition；The compressed air of other B chambers is entered by Y words duct 34, duct 39
To at the port 40 of installation pressure switch 11, therefore pressure switch 11 is off, and then inverter is stopped, empty
Press stops pump gas；
Above-mentioned principle is by behind the increase duct 39 inside modified complex dryer 4, will just install pressure switch
11 port 40 is connected with B chambers and A chambers respectively by duct 39 and Y words duct 34, so installs the port 40 of pressure switch 11
The pressure size at place just directly strictly associates with the pump gas and unloading condition of complex dryer, is thus solved from principle
Determined electric braking air compressor start and stop and drier off-load purging action stationary problem.
The pressure switch 11 is the high disconnected type of low pass.
Two kinds of the main wheel cylinder gas of working condition of the start-up and shut-down control principle of electric braking air compressor and off-load：
(1) pump gas state
Pressure at the gas outlet of escape pipe 26 is equal with A cavity pressures, and pressure 700-750kPa is closed less than returning for pressure regulator valve
When, return, unloading control valve 33 move to left closing to rubber cup 29 under the action of the spring, and tappet 30 is jacked up, and bypath valve 31 is opened
Open, B chambers and install pressure switch 11 port 40 by Y words duct 34, duct 39, bypath valve 31, E chambers, by-pass duct 32,
F chambers etc. are communicated with air, and piston 38 moves up, and drain tap 35 is closed, while pressure switch 11 turns on, so as to control inverter to open
Beginning work, electric braking air compressor start pump gas, and compressed air is through air compressor machine appendix 3, modified complex dryer 4, dry
Dry device appendix 7, four-loop protection valve 8 etc. are pre- to be stored in gas receiver 10, while some compressed air is through regenerating gas storage
Cylinder air inlet pipe tracheae 5 is pre-stored in regeneration gas receiver 6.In the process, A cavity pressures increase and risen with the pressure of escape pipe 26
Height, but before A cavity pressures reach design load, rubber cup 29 is in pump gas position all the time under the effect of the precompression of spring 17, presses
Power switch 11 is constantly in conducting state.
(2) unloading condition
Pressure at 26 mouthfuls of the escape pipe of drier is equal with A cavity pressures, when reaching 810 ± 20kPa of design load, in A
The lower rubber cup 29 of cavity pressure effect overcomes the precompression of spring 17 and moved to right, and moves to right opening with unloading control valve 33, very simultaneously
Bar 30, which is shot back, promotes bypath valve 31 to close, and B chambers connect with A chambers, and B cavity pressures raise and promote piston 38 to move down, air bleeding valve
Door 35 is opened, and the compressed air in C chambers is emptied through drain tap 35, F chambers, and check valve 25 is closed, and maintains A chambers, downstream pipeline
It is constant with the pressure in gas receiver.At the same time, compressed air in gas receiver 6 is regenerated reversely to blow through 24 mouthfuls, throttle orifice 23, D chambers
Drying 21 is crossed, so as to which moisture and greasy dirt etc. be discharged from exhaust outlet 36；Compressed air is through Y words duct 34 and duct 39 in A chambers
At the port 40 for reaching installation pressure switch 11 so that pressure switch 11 disconnects, so that inverter is stopped, electrodynamic braking
Air compressor machine stops pump gas.So far, electric braking air compressor is shut down and the action of drier purging synchronously completes；When drier escape pipe
Pressure is down to pressure regulator valve time pass pressure at 26 mouthfuls again when, system starts pump gas circulation again.
Claims (2)
1. a kind of start-up and shut-down control method of electric braking air compressor using modified combined drying；It is described to use modified group
The electric braking air compressor system for closing drier is stored up by electric braking air compressor, inverter, modified complex dryer, regeneration
Inflator, four-loop protection valve and gas receiver composition；Wherein air compressor driving motor (1) is combined into electrodynamic braking with air compressor machine (2)
Air compressor machine, air compressor machine (2) are connected on modified combined drying (4) through air compressor machine appendix (3), modified combined drying
(4) by regenerating gas receiver air inlet pipe (5) and drier appendix (7) respectively with regenerating gas receiver (6) and four-loop protection valve
(8) connect, four-loop protection valve (8) is connected by four loop voltage-distributing tracheaes (9) with gas receiver (10)；Modified combined drying
(4) pressure switch (11) is installed, its output end is connected to the control of inverter (14) by control line (12) on port (40)
On port (13) processed；Inverter (14) is powered by HVDC supply port (15), and DC inverter is passed through for three-phase alternating current
Three-phase output line (16) supply air compressor driving motor (1)；
The structure of the modified combined drying to fix drying (21) in shell (22), around drying (21) and
Top is circular passage (20), and filter core (19) is fixed on circular passage (20) bottom, drying (21) lower end Innovation of Connection type group
Close drier C chambers and funnel-form D chambers, modified combined drying C chambers upper end are fixed with circular passage (20) lower end, pass through filter core
(19) communicated with drying (21)；Air inlet (18) is arranged on the modified combined drying C chambers left side；Escape pipe (26) upper end connects
Funnel-form D chambers lower end is connected on, escape pipe (26) horizontal segment first half is arranged to throttle orifice (23), throttle orifice (23) and regeneration gas storage
Cylinder port (24) communicates；Check valve (25) is installed in escape pipe (26) horizontal segment lower half, below escape pipe (26) horizontal segment from
Left-to-right is arranged to F chambers, A chambers and E chambers；F chambers and modified combined drying C chambers communicate, and F chambers top is by piston (38) and piston
Sealing ring (37) be separated out B chambers, A chambers and E chambers by rubber cup (29) every；The left side of F chambers sets port (40)；The following of F chambers sets
Exhaust outlet (36) is put, drain tap (35) is arranged on F intracavitary, and piston (38) is connected with drain tap (35)；Y words duct (34) will
B chambers, A chambers connect with port (40)；Small duct (27) is set by escape pipe in escape pipe (26) and check valve (25) junction
(26) connected with A chambers；B chambers are also connected by duct (39) with port (40)；In the right of E chambers installation screw press (28)；Institute
State and bypath valve (31), unloading control valve (33) and by-passing valve are installed on the medium pore for the rubber cup (29) for separating A chambers and E chambers
Door (31) is co-axially mounted, and spring supporting is used between unloading control valve (33) and rubber cup (29)；In the rubber cup (29) of E intracavitary
Spring supporting is also used between screw press (28)；By-pass duct (32) connects E chambers with F chambers；Characterized in that, come from pneumatics
The compressed air of machine (2) is entered the C chambers of modified combined drying (4) by air inlet (18), due to compressed air own temperature
Decline, part condensed water can be produced, be deposited on drain tap (35) place, the improved type combination drying of compressed air stream of C chambers
The fine filtrator (19) of device (4), and by the top of circular passage (20) arrival modified combined drying (4), when compression is empty
Air-flow is adsorbed and is detained in its surface through moisture when drying (21), and dried compressed air reaches funnel-form D chambers, warp
Escape pipe (26) exports with check valve (25)；The Partial shrinkage air of funnel-form D chambers is stored up through throttle orifice (23) by regenerating simultaneously
Inflator port (24), regeneration gas receiver air inlet pipe (5) enter regeneration gas receiver (6)；Into the part compression of escape pipe (26)
Air passes through sets small duct (27) to reach A chambers in escape pipe (26) and check valve (25) junction；When A cavity pressures are less than design load
During 810kPa, unloading control valve (33) is closed, and tappet (30) is jacked up, and bypath valve (31) is in opening state
State, B chambers are by Y words duct (34), bypath valve (31), E chambers, by-pass duct (32), F chambers and atmosphere, so now B chambers
For atmospheric pressure state, B chambers are also connected by duct (39) with the port (40) of installation pressure switch (11), therefore pressure switch (11)
In the conduction state, now modified combined drying is in pump gas state；When A cavity pressures reach design load 810kPa, A chambers
The rubber cup (29) of right part overcomes the precompression of spring (17) to move to right, and unloading control valve (33) moves to right opening, tappet (30) quilt
Rebounding, bypath valve (31) is closed, and B chambers are connected by Y words duct (34) with A chambers, so now B chambers are high pressure conditions, B chamber pressures
Push piston (38) to move down, drain tap (35) is opened, valve (35), F chamber and exhaust outlet of the C chamber mesohigh air through opening
(36) it is discharged into air, at the same time, the drying compressed air in regeneration gas receiver (6) is through regenerating gas receiver port (24), section
Discharge orifice (23) flows to rapidly the funnel-form D chambers of modified combined drying (4) bottom, flows through drying (21) from bottom to top, will
The moisture being trapped on drier is taken away, and is discharged into through circular passage (20), C chambers, drain tap (35), F chambers from exhaust outlet (36)
Air, now modified combined drying (4) be in unloading condition；The compressed air of other B chambers passes through Y words duct (34), hole
Road (39) enters port (40) place of installation pressure switch (11), therefore pressure switch (11) is off, and is then made
Inverter is stopped, and air compressor machine stops pump gas；Above-mentioned principle is by the increase duct inside modified combined drying (4)
(39) after, will just install the port (40) of pressure switch (11) by duct (39) and Y words duct (34) respectively with B chambers and A chambers
Connection, the pressure size just pump gas directly with modified combined drying at port (40) place of pressure switch (11) is so installed
Strictly associated with unloading condition, thus solve electric braking air compressor start and stop and modified combination drying from principle
The stationary problem of device off-load purging action.
2. the start-up and shut-down control method of the electric braking air compressor of modified combined drying is used according to claim 1, its
It is characterised by, the pressure switch is the high disconnected type of low pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610298688.5A CN105822531B (en) | 2016-05-06 | 2016-05-06 | Using the electric braking air compressor system start-up and shut-down control method for improving combined drying |
Applications Claiming Priority (1)
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| DE102016011502A1 (en) * | 2016-09-21 | 2018-03-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Compressor system for a commercial vehicle |
| CN106476786B (en) * | 2016-11-18 | 2019-03-01 | 中车大连机车车辆有限公司 | The fault judgment method of city rail vehicle air supply system |
| US11072218B2 (en) | 2016-12-16 | 2021-07-27 | Zf Cv Systems Europe Bv | Compressed-air supply system and method to operating a compressed-air supply system |
| CN108499331A (en) * | 2018-05-23 | 2018-09-07 | 北京光宇之勋科技有限公司 | A kind of automobile air drier |
| EP4140840B1 (en) * | 2021-08-31 | 2024-03-13 | ZF CV Systems Europe BV | Purge valve for an air-drying device and air-drying device and pressurized air-based system and commercial vehicle |
| CN114572172B (en) * | 2022-02-15 | 2022-11-29 | 东风汽车股份有限公司 | Pressure maintaining control method for brake system, recording medium and system |
| CN114738252A (en) * | 2022-02-24 | 2022-07-12 | 中国第一汽车股份有限公司 | Control method, system and equipment for electric air compressor and storage medium |
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