CN106438321A - Operation control method, system and air compressor system - Google Patents
Operation control method, system and air compressor system Download PDFInfo
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- CN106438321A CN106438321A CN201610543975.8A CN201610543975A CN106438321A CN 106438321 A CN106438321 A CN 106438321A CN 201610543975 A CN201610543975 A CN 201610543975A CN 106438321 A CN106438321 A CN 106438321A
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- total blast
- rotating speed
- target
- total
- compressor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- 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
- F04B49/20—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 by changing the driving speed
-
- 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
- F04B49/02—Stopping, starting, unloading or idling control
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The application discloses an operation control method, system and an air compressor system. The method and the system are used for controlling the air compressor system of track locomotives. The total blast pressure of a total air cylinder is detected; when the total blast pressure changes, the total blast pressure change rate is calculated according to the change conditions of the total blast pressure, wherein the total blast pressure change rate comprises the total blast pressure rising rate and the total blast pressure descending rate; multiple actual operating rotating rates which successively descend are determined according to the maximum operation rotating rate of the air compressing device; a target rotating rate is selected from the multiple actual operating rotating rates according to the total blast pressure and total blast pressure changes and the air comprising device is controlled to operate at the target rotating rate; when the total blast pressure value reaches at the maximum operating pressure of the total air cylinder, the air compressing device is controlled to stop rotating. The technical scheme of the application can solve the problem of emulsification of lubricant due to short single operation time of an air compressor system.
Description
Technical field
The application is related to technical field of rail traffic, more particularly, it relates to a kind of progress control method, system and air
Compressor assembly.
Background technology
Air compressor is a kind of important power-equipment on rail locomotive, and it is rail locomotive by output high-pressure gas
Wind regime used by retarding braking is provided.In order to ensure the safe operation of rail locomotive, the rated discharge of its air compressor is often
It is under foundation extreme case, to have ensure that enough air quantity designs.But, rail locomotive uses air quantity under normal operating conditions
With the very different of extreme case, only rail locomotive need to can be met with relatively low work ratio work in air compressor at ordinary times
Normal demand, in this case, the temperature of lubricating oil is often unable to reach the requirement of water-oil separating, and the moisture of suction cannot be arranged
Remove, thus causing lubricating oil that emulsification problem occurs.
Content of the invention
In view of this, the application provides a kind of progress control method, system and air compressor system, for solving track
The emulsification of lubricant problem that the air compressor system of locomotive leads to because separate run times are shorter.
To achieve these goals it is proposed that scheme as follows：
A kind of progress control method, is applied to the air compressor system of rail locomotive, described air compressor system bag
Include air compression plant and total reservoir, described progress control method includes step：
Detect total blast of described total reservoir；
When described total blast changes, the situation of change according to described total blast calculates total blast pace of change, institute
Stating total blast pace of change is total blast rate of climb or total blast decrease speed；
Multiple real work rotating speeds that rotating speed reduces successively are determined according to the highest working speed of described air compression plant；
Determine that target turns from the plurality of real work rotating speed according to described total blast and described total blast pace of change
Speed, and control described air compression plant to operate by described rotating speed of target；
When described total wind pressure value reaches the maximum working pressure of total reservoir, described air compression plant is controlled to stop fortune
Turn.
Optionally, the plurality of real work rotating speed includes the 5/ of described highest working speed and described highest working speed
6th, 2/3,1/2 and 1/3.
Optionally, described according to described total blast and described total blast pace of change from the plurality of real work rotating speed
Determine rotating speed of target, and control described air compression plant to operate by described rotating speed of target, including：
When described rail locomotive starts, if described total blast is less than the minimum working pressure of described total reservoir, start
Described air compression plant；
Described rotating speed of target is determined according to described total blast；
After described rail locomotive starts, described rotating speed of target is determined according to described total blast rate of climb；
Described air compression plant is controlled to operate by described rotating speed of target.
Optionally, described air compression plant includes the first compressor and the second compressor, the described air pressure of described control
Compression apparatus press described rotating speed of target operating, including：
When described rail locomotive starts, only start described first compressor；
After described rail locomotive starts, described second compressor is increased according to described total blast pace of change.
Optionally, described according to described total blast and described total blast pace of change from the plurality of real work rotating speed
Determine rotating speed of target, and control described air compression plant to operate by described rotating speed of target, including：
When described rail locomotive normal work, and described total blast is less than or equal to the minimum working pressure of described total reservoir
When, start described air compression plant；
Described rotating speed of target is determined according to described total blast decrease speed；
After described total blast begins to ramp up, described rotating speed of target is determined according to described total blast rate of climb；
Described air compression plant is controlled to operate by described rotating speed of target.
Optionally, described air compression plant includes the first compressor and the second compressor, the described air pressure of described control
Compression apparatus press described rotating speed of target operating, including：
When described total blast is less than default first lower limit, only starts described first compressor, and control described first
Described rotating speed of target operating pressed by compressor；
When described total blast is higher than described default first lower limit and during less than described default second lower limit, start the
One compressor and described second compressor, and control two compressors to press described rotating speed of target operating.
A kind of operation control system, is applied to the air compressor system of rail locomotive, described air compressor system bag
Include air compression plant and total reservoir, described operation control system includes：
Total blast detection module, for detecting total blast of described total reservoir；
Total blast change calculations module, for when described total blast changes, according to the change feelings of described total blast
Condition calculates total blast pace of change, and described total blast pace of change is total blast rate of climb or total blast decrease speed；
For the highest working speed according to described air compression plant, working speed setup module, determines that rotating speed drops successively
Low multiple real work rotating speeds；
Operating control module, for according to described total blast and described total blast pace of change from the plurality of real work
Determine rotating speed of target in rotating speed, and control described air compression plant to operate by described rotating speed of target；
Described operating control module is additionally operable to, when described total wind pressure value reaches the maximum working pressure of total reservoir, control institute
State air compression plant to shut down.
Optionally, the plurality of real work rotating speed includes the 5/ of described highest working speed and described highest working speed
6th, 2/3,1/2 and 1/3.
Optionally, described operating control module includes：
First start unit, for when described rail locomotive starts, starting described air compression plant；
First object rotating speed determining unit, if be less than the minimum working pressure of described total reservoir for described total blast,
Described rotating speed of target is determined according to described total blast；
Second rotating speed of target determining unit, for after described rail locomotive starts, according to described total blast rate of climb
Determine described rotating speed of target；
First control unit, for controlling described air compression plant to operate by described rotating speed of target.
Optionally, described air compression plant includes the first compressor and the second compressor, described first control unit bag
Include：
First control subelement, for when described rail locomotive starts, only starting described first compressor；
Second control subelement, for, after described rail locomotive starts, increasing institute according to described total blast pace of change
State the second compressor.
Optionally, described operating control module includes：
Second start unit, for when described rail locomotive normal work, and described total blast be less than or equal to described
During the minimum working pressure of total reservoir, start described air compression plant；
3rd rotating speed of target determining unit, for determining described rotating speed of target according to described total blast decrease speed；
4th rotating speed of target determining unit, for after described total blast begins to ramp up, according to raising speed on described total blast
Degree determines described rotating speed of target；
Second control unit, for controlling described air compression plant to operate by described rotating speed of target.
Optionally, described air compression plant includes the first compressor and the second compressor, described second control unit bag
Include：
3rd control subelement, for when described total blast is less than default first lower limit, only starting described first pressure
Contracting machine, and control described first compressor to operate by described rotating speed of target；
4th control subelement, for when described total blast is higher than described default first lower limit and is less than described default
During the second lower limit, start the first compressor and described second compressor, and control two compressors to press described rotating speed of target fortune
Turn, described second lower limit is less than described minimum working pressure.
A kind of air compressor system is it is characterised in that be provided with operation control system as above.
It can be seen from above-mentioned technical scheme that, this application discloses a kind of progress control method, system and air compression
Machine system, the method and system are used for the air compressor system of rail locomotive is controlled, and specially detect described total wind
Total blast of cylinder；When total blast changes, the situation of change according to total blast calculates total blast pace of change, and total blast becomes
Change speed and include total blast rate of climb and total blast decrease speed；Turned according to the highest working speed determination of air compression plant
Multiple real work rotating speeds that speed reduces successively；True from the plurality of real work rotating speed according to total blast and the change of total blast
Set the goal rotating speed, and controls air compression plant according to target rotation speed operation；When total wind pressure value reaches in the operating pressure of total reservoir
In limited time, air compression plant is controlled to shut down.The technical scheme that the application provides is controlling the air of air compressor system
During the rotating speed of compression set, it is not to hold it in highest working speed always, but speed is changed according to total blast and total blast
Degree determines the rotating speed of target less than or equal to highest working speed, and controls air compression plant to operate by this rotating speed of target, by
It is less than highest working speed in target operation rotating speed sometimes, the single run time of therefore its air compression plant will phase
Should extend such that it is able to solve the problems, such as the emulsification of lubricant that air compressor system leads to because separate run times are shorter.
Brief description
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of application, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
A kind of flow chart of steps of progress control method that Fig. 1 provides for the embodiment of the present application；
A kind of flow chart of steps of determination rotating speed of target method that Fig. 2 provides for the application；
Another kind of flow chart of steps determining rotating speed of target method that Fig. 3 provides for the application；
A kind of structured flowchart of operation control system that Fig. 4 provides for another embodiment of the application；
The structured flowchart of another kind of operation control system that Fig. 5 provides for the application；
The structured flowchart of another operation control system that Fig. 6 provides for the application.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation describes it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of the application protection.
Embodiment one
A kind of flow chart of steps of progress control method that Fig. 1 provides for the embodiment of the present application.
As shown in figure 1, the progress control method that the present embodiment provides is applied to the air compressor system of rail locomotive, should
Air compressor system includes air compression plant and total reservoir.Air compression plant generally comprises two compressors, respectively
First compressor and the second compressor, the air inlet of total reservoir is connected with the gas outlet of two compressors, for storage compression
Air, this progress control method specifically includes following steps：
S101：Detect total blast of total reservoir.
Using being arranged on setting pressure checking device on the blast main of total reservoir, the pressure of total reservoir is detected, and obtain
Total blast of total reservoir pressure must be reflected.
S102：Total blast pace of change is determined according to the situation of change of total blast.
During air compressor system normal work, change at any time during the pressure of total reservoir, when it changes
Calculate this total blast pace of change, total blast situation of change reflects the supplementary information of gas or service condition, phase in total reservoir
Ying Di, this total blast pace of change includes total blast rate of climb and total blast decrease speed.
S103：Set multiple real work rotating speeds.
Practical operation situation according to air compressor and control require, and set multiple real work rotating speeds, multiple reality
Working speed determines according to highest working speed, and for example, highest working speed is 60r/s, and multiple real work rotating speeds are except
Outside high workload rotating speed, also include 5/6,2/3,1/2 and the 1/3 of the highest working speed that speed reduces successively successively, concrete rotating speed
Value is respectively five rotating speed shelves of 60r/s, 40r/s, 30r/s, 50r/s and 20r/s.
S104：Rotating speed of target is determined according to total blast and total blast pace of change, and controls air compression plant according to target
Rotation speed operation.
I.e. concrete consideration air compressor system is in start or normal operation, the actual value of total blast and total wind
Pressure pace of change determines rotating speed of target from multiple real work rotating speeds, then controls air compressor to press this rotating speed of target and transports
Turn.For example 40r/s can be determined from five rotating speed shelves according to total blast and total blast pace of change, then control air compression
Device presses the rotation speed operation of 40r/s.
S105：When total blast reaches the maximum working pressure of total reservoir, air compression plant is controlled to shut down.
Total reservoir typically has a safe-working pressure scope, between minimum working pressure and maximum working pressure it
Between, if total blast exceeds this safe-working pressure scope, it is higher than specially this maximum working pressure, then it may happen that dangerous；
If being less than this minimum working pressure, can make its plant equipment driving cannot normal work.In order to avoid causing danger, when
When total blast reaches this maximum working pressure, air compression plant is controlled to shut down.The minimum working pressure one of rail locomotive
As be 750kPa or 850kPa, maximum working pressure be generally 900kPa or 1000kPa.
From technique scheme as can be seen that present embodiments providing a kind of progress control method, the method is used for rail
The air compressor system of road locomotive is controlled, and specially detects total blast of described total reservoir；Change in total blast
When, total blast pace of change is calculated according to the situation of change of total blast, total blast pace of change include total blast rate of climb and
Total blast decrease speed；Determine that multiple real works that rotating speed reduces successively turn according to the highest working speed of air compression plant
Speed；Rotating speed of target is determined from the plurality of real work rotating speed according to total blast and the change of total blast, and controls air to compress
Device according to target rotation speed operation；When total wind pressure value reaches the maximum working pressure of total reservoir, air compression plant is controlled to stop
Operating.The technical scheme that the application provides, when controlling the rotating speed of air compression plant of air compressor system, is not always
Hold it in highest working speed, but determined according to total blast and total blast pace of change and turn less than or equal to highest work
The rotating speed of target of speed, and control air compression plant to operate by this rotating speed of target, because target operation rotating speed is less than the most sometimes
The single run time of high workload rotating speed, therefore its air compression plant will accordingly extend such that it is able to solve air compression
The emulsification of lubricant problem that machine system leads to because separate run times are shorter.
In the present embodiment, when rail locomotive is in startup stage, mesh is determined according to total blast and total blast pace of change
Mark rotating speed, and control the step of air compression plant according to target rotation speed operation to utilize following concrete steps to realize, as shown in Figure 2：
S1041：Start air compression plant.
When in rail locomotive is in startup stage, if total blast is less than minimum working pressure, open air compression plant
Total reservoir is inflated.
S1042：Rotating speed of target is determined according to total blast.
After air compression plant completes to start, rotating speed of target is determined according to this total blast.
S1043：After in rail locomotive starts, rotating speed of target is determined according to total blast rate of climb.
After air compression plant spends startup stage, when total blast is in ascent stage, then risen according to total blast
Speed determines rotating speed of target.
S1044：Control air compression plant according to target rotation speed operation.
After starting air compression plant, control the rotating speed of air compression plant by the rotating speed of target of above-mentioned determination, that is, first
First air compressor is controlled to be started by the rotating speed of target being determined according to total blast；Total blast is pressed when then pressing total blast change
The rotating speed of target that the rate of climb determines controls air compression plant to be operated.And in rail locomotive only starts first when starting
Compressor；In rail locomotive increases the second compressor according to total blast pace of change after starting.Specific control example sees below
Content：
First, it is assumed that maximum functional supply frequency f of air compression plant is Q for capacity during 60HZ, then,WithCorresponding capacity should be respectivelyWithWith sky
Air pressure compression apparatus peak frequency all works, total reservoir rate of pressure rise is normal pressure pace of change QV, according to general public affairs
Shi Ke get：In formula, Q is total reservoir rate of pressure rise；V is the volume of total reservoir；P0For atmospheric pressure.To press
Force snesor is made in the pressure differential Δ P (Δ P generally can use 50kPa) of the often integer multiple of two neighboring pressure and the business of time difference
For pressure decay rate Q under actual total blast rate of climb/total blastS.
The minimum working pressure of blowing plant and maximum working pressure are represented with P1 and P2 respectively, and P1 is generally set
It is set to 750kPa or 850kPa, P2 is normally provided as 900kPa or 1000kPa.
Total blast when locomotive starts is less than 500kPa, controls the first compressor start, and controls its supply frequency to be f,
Before total blast is less than P1, if total reservoir rate of rise is more thanThe first compressor is kept to work independently；If total wind
The cylinder rate of rise is not more thanThen start the second compressor to work with 60HZ supply frequency；After total blast rises to P1, such as
Now total blast rate of climb is more than 1.5 QV, then the supply frequency of two compressors is controlled to beUntil pressure reaches
P2, stops the work of all compressors.
Total blast when locomotive starts is less than P1, more than 500kPa, controls the first compressor, and controls its supply frequency to beIf total blast rate of climb is more thanKeep this working condition, until pressure reaches P2, stop the work of compressor
Make；As total reservoir pressure rate of climb is not more thanThe first compressor is then controlled to work with 60HZ supply frequency, now, such as
Total blast rate of climb is not more thanThen start the second compressor to work with f supply frequency, until pressure reaches P2, stop
The work of all compressors.
In addition, when rail locomotive is in normal operating phase, being changed according to total blast and total blast in the present embodiment
Speed determines rotating speed of target, and controls the method for air compression plant according to target rotation speed operation to realize using step in detail below,
As shown in Figure 3：
S1045：Start air compression plant.
When in rail locomotive is in running status, when total blast is less than or equal to the minimum working pressure of total reservoir, open
Dynamic air compression plant.
S1046：Rotating speed of target is determined according to total blast decrease speed.
After starting air compression plant, and when total blast is in decline state, determined according to total blast decrease speed
Rotating speed of target.
S1047：Rotating speed of target is determined according to total blast rate of climb.
After air compression plant starts a period of time, when total blast is in propradation, according to raising speed on total blast
Degree determines rotating speed of target.
S1048：Control air compression plant according to target rotation speed operation.
And when total blast is less than default first lower limit, only starts the first compressor, and control this first compressor to press
This rotating speed of target operates；When total blast is higher than to preset the first lower limit and be less than default second lower limit, start the first compression
Machine and the second compressor are pressed this rotating speed of target and are operated.Specific control example is as described below：
During rail locomotive normal work, when total reservoir pressure is depressurized to P1+50kPa, and pressure decay rate is less thanControl
Make the first compressor start, and control its supply frequency to beNow, as total blast rate of climb is more thanKeep this
Working condition, until pressure reaches P2, stops the work of compressor；As total blast rate of climb is not more thanThen control it
Supply frequency increases one-level on the basis of before this, until total wind rises the rate of climb and is more thanKeep this working condition, until
Pressure reaches P2, stops the work of the first compressor.
During rail locomotive normal work, when total blast is depressurized to P1, and total blast decrease speed is less thanControl the
One compressor start, and control its supply frequency to beNow, as total blast rate of climb is more thanKeep this work
State, until pressure reaches P2, stops the work of compressor；As total blast rate of climb is not more thanThen control its power supply
Frequency increases one-level on the basis of before this, until total blast rate of climb is more thanKeep this working condition, until pressure
Reach P2, stop the work of the first compressor.
During locomotive normal work, when total blast is depressurized to P1, and total blast decrease speed is not less thanControl first
Compressor start, and control its supply frequency to be f, keep this working condition, until pressure reaches P2, stop the first compressor
Work；
During rail locomotive normal work, when total blast is down to P1-70kPa, control the first compressor and the second compressor same
When started with f and work, such as total blast rate of climb is more than QV, then the supply frequency simultaneously controlling two compressors is in base before this
Reduce one-level, until being reduced on plinthKeep this working condition, until pressure reaches P2, stop the work of two compressors
Make；
Embodiment two
A kind of structured flowchart of operation control system that Fig. 4 provides for another embodiment of the application.
As shown in figure 4, the operation control system that the present embodiment provides is used for the air compressor system of rail locomotive is entered
Row controls, and this air compressor system includes air compression plant and total reservoir.Air compression plant generally comprises two compressions
Machine, the respectively first compressor and the second compressor, the air inlet of total reservoir is connected with the gas outlet of two compressors, uses
In storage compressed air, this operation control system includes total blast detection module 10, total blast change calculations module 20, work turn
Fast setup module 30 and operating control module 40.
Total blast detection module 10 is used for detecting total blast of total reservoir.
It is specially and the pressure of total reservoir is examined using being arranged on setting pressure checking device on the blast main of total reservoir
Survey, and obtain the total blast reflecting total reservoir pressure.
Total blast change calculations module 20 is used for determining total blast pace of change according to the situation of change of total blast.
During air compressor system normal work, change at any time during the pressure of total reservoir, when it changes
Calculate this total blast pace of change, total blast situation of change reflects the supplementary information of gas or service condition, phase in total reservoir
Ying Di, this total blast pace of change includes total blast rate of climb and total blast decrease speed.
Working speed setup module is used for setting multiple real work rotating speeds according to the setting instruction of user.
Multiple real work rotating speeds determine according to highest working speed, and for example, highest working speed is 60r/s, Duo Geshi
Border working speed, in addition to highest working speed, also includes 5/6,2/3, the 1/ of the highest working speed that speed reduces successively successively
2 and 1/3, concrete tachometer value is respectively five rotating speed shelves of 60r/s, 40r/s, 30r/s, 50r/s and 20r/s.
Operating control module 40 is used for determining rotating speed of target according to total blast and total blast pace of change, and controls air pressure
Compression apparatus according to target rotation speed operation.
I.e. concrete consideration air compressor system is in start or normal operation, the actual value of total blast and total wind
Pressure pace of change determines rotating speed of target from multiple real work rotating speeds, then controls air compressor to press this rotating speed of target and transports
Turn.For example 40r/s can be determined from five rotating speed shelves according to total blast and total blast pace of change, then control air compression
Device presses the rotation speed operation of 40r/s.
Operating control module 40 is additionally operable to, when total blast reaches the maximum working pressure of total reservoir, control air compression dress
Put and shut down.
Total reservoir typically has a safe-working pressure scope, between minimum working pressure and maximum working pressure it
Between, if total blast exceeds this safe-working pressure scope, it is higher than specially this maximum working pressure, then it may happen that dangerous；
If being less than this minimum working pressure, can make its plant equipment driving cannot normal work.In order to avoid causing danger, when
When total blast reaches this maximum working pressure, air compression plant is controlled to shut down.The minimum working pressure one of rail locomotive
As be 750kPa or 850kPa, maximum working pressure be generally 900kPa or 1000kPa.
From technique scheme as can be seen that present embodiments providing a kind of operation control system, this system is used for rail
The air compressor system of road locomotive is controlled, and specially detects total blast of described total reservoir；Change in total blast
When, total blast pace of change is calculated according to the situation of change of total blast, total blast pace of change include total blast rate of climb and
Total blast decrease speed；Determine that multiple real works that rotating speed reduces successively turn according to the highest working speed of air compression plant
Speed；Rotating speed of target is determined from the plurality of real work rotating speed according to total blast and the change of total blast, and controls air to compress
Device according to target rotation speed operation；When total wind pressure value reaches the maximum working pressure of total reservoir, air compression plant is controlled to stop
Operating.The technical scheme that the application provides, when controlling the rotating speed of air compression plant of air compressor system, is not always
Hold it in highest working speed, but determined according to total blast and total blast pace of change and turn less than or equal to highest work
The rotating speed of target of speed, and control air compression plant to operate by this rotating speed of target, because target operation rotating speed is less than the most sometimes
The single run time of high workload rotating speed, therefore its air compression plant will accordingly extend such that it is able to solve air compression
The emulsification of lubricant problem that machine system leads to because separate run times are shorter.
In the present embodiment, when rail locomotive is in startup stage, operating control module 40 is used for according to total blast with always
Blast pace of change determines rotating speed of target, and controls air compression plant according to target rotation speed operation, and this module includes the first startup
Module 41, first object rotating speed determining module 42, the second rotating speed of target determining module 43 and the first control unit 44, as Fig. 5 institute
Show：
When first starting module 41 is in startup stage in rail locomotive, if total blast is less than under operating pressure
Limit, opens air compression plant and total reservoir is inflated.
First object rotating speed determining module 42 is used for, after air compression plant completes to start, determining mesh according to this total blast
Mark rotating speed.
Second rotating speed of target determines 43 modules for, after air compression plant spends startup stage, being in total blast
During the stage of liter, then rotating speed of target is determined according to total blast rate of climb.
First control unit 44 is used for after the first start unit 41 starts air compression plant, by the target of above-mentioned determination
Rotating speed controls the rotating speed of air compression plant, controls air compressor to carry out by the rotating speed of target being determined according to total blast first
Start；Air compression plant is controlled to be transported by the rotating speed of target that total blast rate of climb determines when then changing by total blast
Turn.First control unit 44 includes the first control subelement and the second control subelement, and first controls subelement to be used in rail
Locomotive only starts the first compressor when starting；Second controls subelement to change speed according to total blast after being used for the startup of in rail locomotive
Degree increases the second compressor.The specific content controlling example to see below：
First, it is assumed that maximum functional supply frequency f of air compression plant is Q for capacity during 60HZ, then,WithCorresponding capacity should be respectivelyWithWith sky
Air pressure compression apparatus peak frequency all works, total reservoir rate of pressure rise is normal pressure pace of change QV, according to general public affairs
Shi Ke get：In formula, Q is total reservoir rate of pressure rise；V is the volume of total reservoir；P0For atmospheric pressure.To press
Force snesor is made in the pressure differential Δ P (Δ P generally can use 50kPa) of the often integer multiple of two neighboring pressure and the business of time difference
For pressure decay rate Q under actual total blast rate of climb/total blastS.
The minimum working pressure of blowing plant and maximum working pressure are represented with P1 and P2 respectively, and P1 is generally set
It is set to 750kPa or 850kPa, P2 is normally provided as 900kPa or 1000kPa.
Total blast when locomotive starts is less than 500kPa, controls the first compressor start, and controls its supply frequency to be f,
Before total blast is less than P1, if total reservoir rate of rise is more thanThe first compressor is kept to work independently；If total wind
The cylinder rate of rise is not more thanThen start the second compressor to work with 60HZ supply frequency；After total blast rises to P1, such as
Now total blast rate of climb is more than 1.5 QV, then the supply frequency of two compressors is controlled to beUntil pressure reaches
P2, stops the work of all compressors.
Total blast when locomotive starts is less than P1, more than 500kPa, controls the first compressor, and controls its supply frequency to beIf total blast rate of climb is more thanKeep this working condition, until pressure reaches P2, stop compressor
Work；As total reservoir pressure rate of climb is not more thanThe first compressor is then controlled to work with 60HZ supply frequency, now, such as
Total blast rate of climb is not more thanThen start the second compressor to work with f supply frequency, until pressure reaches P2, stop
The work of all compressors.
In addition, when rail locomotive is in normal operating phase, in the present embodiment, operating control module 40 is according to total blast
Determine rotating speed of target with total blast pace of change, and control air compression plant according to target rotation speed operation, this module specifically includes
Second start unit 45, the 3rd rotating speed of target determining unit 46 and the 4th rotating speed of target determining unit 47 and the second control unit
48, as shown in Figure 6：
When second start unit 45 is in running status in rail locomotive, when total blast is less than or equal to total reservoir
During minimum working pressure, start air compression plant.
3rd rotating speed of target determining unit 46 is used for after air compression plant starts, and is in decline state in total blast
When, rotating speed of target is determined according to total blast decrease speed.
4th rotating speed of target determining unit 47 is used for, after air compression plant starts a period of time, being in total blast
During the state of liter, rotating speed of target is determined according to total blast rate of climb.
Second control unit 48 is used for controlling air compression plant according to target rotation speed operation.Including the 3rd control subelement and
4th control subelement.
3rd controls subelement to be used for, when total blast is less than default first lower limit, only starting the first compressor, and controlling
Make this first compressor to operate by this rotating speed of target；4th control subelement be used for total blast be higher than default first lower limit and
During less than default second lower limit, start the first compressor and the second compressor is pressed this rotating speed of target and operated.Specific control is real
For example lower described：
During rail locomotive normal work, when total reservoir pressure is depressurized to P1+50kPa, and pressure decay rate is less thanControl
Make the first compressor start, and control its supply frequency to beNow, as total blast rate of climb is more thanKeep this
Working condition, until pressure reaches P2, stops the work of compressor；As total blast rate of climb is not more thanThen control it
Supply frequency increases one-level on the basis of before this, until total wind rises the rate of climb and is more thanKeep this working condition, until
Pressure reaches P2, stops the work of the first compressor.
During rail locomotive normal work, when total blast is depressurized to P1, and total blast decrease speed is less thanControl first
Compressor start, and control its supply frequency to beNow, as total blast rate of climb is more thanKeep this work shape
State, until pressure reaches P2, stops the work of compressor；As total blast rate of climb is not more thanThen control its power supply frequency
Rate increases one-level on the basis of before this, until total blast rate of climb is more thanKeep this working condition, until pressure arrives
Reach P2, stop the work of the first compressor.
During locomotive normal work, when total blast is depressurized to P1, and total blast decrease speed is not less thanControl first
Compressor start, and control its supply frequency to be f, keep this working condition, until pressure reaches P2, stop the first compressor
Work；
During rail locomotive normal work, when total blast is down to P1-70kPa, control the first compressor and the second compressor same
When started with f and work, such as total blast rate of climb is more than QV, then the supply frequency simultaneously controlling two compressors is in base before this
Reduce one-level, until being reduced on plinthKeep this working condition, until pressure reaches P2, stop the work of two compressors
Make.
Embodiment three
Present embodiments provide a kind of air compressor system, this air compressor system is provided with above-described embodiment and is carried
For operation control system.It can be avoided that emulsion in lubricating oil.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.Upper to the disclosed embodiments
State bright, so that professional and technical personnel in the field is capable of or use the application.To multiple modifications of these embodiments to ability
Will be apparent from for the professional and technical personnel in domain, generic principles defined herein can be without departing from the application's
In the case of spirit or scope, realize in other embodiments.Therefore, the application be not intended to be limited to shown in this article these
Embodiment, and it is to fit to the wide scope consistent with principles disclosed herein and features of novelty.
Claims (13)
1. a kind of progress control method, is applied to the air compressor system of rail locomotive, and described air compressor system includes
Air compression plant and total reservoir are it is characterised in that described progress control method includes step：
Detect total blast of described total reservoir；
When described total blast changes, the situation of change according to described total blast calculates total blast pace of change, described total
Blast pace of change is total blast rate of climb or total blast decrease speed；
Multiple real work rotating speeds that rotating speed reduces successively are determined according to the highest working speed of described air compression plant；
Rotating speed of target is determined from the plurality of real work rotating speed according to described total blast and described total blast pace of change, and
Described air compression plant is controlled to operate by described rotating speed of target；
When described total wind pressure value reaches the maximum working pressure of total reservoir, described air compression plant is controlled to shut down.
2. progress control method as claimed in claim 1 it is characterised in that the plurality of real work rotating speed include described in
High workload rotating speed and 5/6,2/3,1/2 and the 1/3 of described highest working speed.
3. progress control method as claimed in claim 1 or 2 is it is characterised in that described according to described total blast and described total
Blast pace of change determines rotating speed of target from the plurality of real work rotating speed, and controls described air compression plant by described
Rotating speed of target operates, including：
When described rail locomotive starts, if described total blast is less than the minimum working pressure of described total reservoir, start described
Air compression plant；
Described rotating speed of target is determined from the plurality of real work rotating speed according to described total blast；
After described rail locomotive starts, institute is determined from the plurality of real work rotating speed according to described total blast rate of climb
State rotating speed of target；
Described air compression plant is controlled to operate by described rotating speed of target.
4. progress control method as claimed in claim 3 is it is characterised in that described air compression plant includes the first compressor
With the second compressor, the described air compression plant of described control presses described rotating speed of target operating, including：
When described rail locomotive starts, only start described first compressor, and control described first compressor by described target
Rotation speed operation；
After described rail locomotive starts, described second compressor is increased according to described total blast pace of change.
5. progress control method as claimed in claim 1 or 2 is it is characterised in that described according to described total blast and described total
Blast pace of change determines rotating speed of target from the plurality of real work rotating speed, and controls described air compression plant by described
Rotating speed of target operates, including：
When described rail locomotive normal work, and described total blast be less than or equal to described total reservoir minimum working pressure when,
Start described air compression plant；
Described rotating speed of target is determined according to described total blast decrease speed；
After described total blast begins to ramp up, described rotating speed of target is determined according to described total blast rate of climb；
Described air compression plant is controlled to operate by described rotating speed of target.
6. progress control method as claimed in claim 5 is it is characterised in that described air compression plant includes the first compressor
With the second compressor, the described air compression plant of described control presses described rotating speed of target operating, including：
When described total blast is less than default first lower limit, only start described first compressor, and control described first compression
Described rotating speed of target operating pressed by machine；
When described total blast is higher than described default first lower limit and during less than described default second lower limit, start the first pressure
Contracting machine and described second compressor, and control two compressors to press described rotating speed of target operating.
7. a kind of operation control system, is applied to the air compressor system of rail locomotive, and described air compressor system includes
Air compression plant and total reservoir are it is characterised in that described operation control system includes：
Total blast detection module, for detecting total blast of described total reservoir；
Total blast change calculations module, for when described total blast changes, according to the situation of change meter of described total blast
Calculate total blast pace of change, described total blast pace of change is total blast rate of climb or total blast decrease speed；
Working speed setup module, determines what rotating speed reduced successively for the highest working speed according to described air compression plant
Multiple real work rotating speeds；
Operating control module, for according to described total blast and described total blast pace of change from the plurality of real work rotating speed
Middle determination rotating speed of target, and control described air compression plant to operate by described rotating speed of target；
Described operating control module is additionally operable to, when described total wind pressure value reaches the maximum working pressure of total reservoir, control described sky
Air pressure compression apparatus shut down.
8. operation control system as claimed in claim 7 it is characterised in that the plurality of real work rotating speed include described in
High workload rotating speed and 5/6,2/3,1/2 and the 1/3 of described highest working speed.
9. operation control system as claimed in claim 7 or 8 is it is characterised in that described operating control module includes：
First start unit, for when described rail locomotive starts, starting described air compression plant；
First object rotating speed determining unit, if be less than the minimum working pressure of described total reservoir for described total blast, according to
Described total blast determines described rotating speed of target from the plurality of real work rotating speed；
Second rotating speed of target determining unit, for after described rail locomotive starts, according to described total blast rate of climb from institute
State in multiple real work rotating speeds and determine described rotating speed of target；
First control unit, for controlling described air compression plant to operate by described rotating speed of target.
10. operation control system as claimed in claim 9 is it is characterised in that described air compression plant includes the first compression
Machine and the second compressor, described first control unit includes：
First control subelement, for when described rail locomotive starts, only starting described first compressor, and controls described the
Described rotating speed of target operating pressed by one compressor；
Second control subelement, for, after described rail locomotive starts, increasing described the according to described total blast pace of change
Two compressors.
11. operation control systems as claimed in claim 7 or 8 are it is characterised in that described operating control module includes：
Second start unit, for when described rail locomotive normal work, and described total blast is less than or equal to described total wind
During the minimum working pressure of cylinder, start described air compression plant；
3rd rotating speed of target determining unit, for determining described rotating speed of target according to described total blast decrease speed；
4th rotating speed of target determining unit, for after described total blast begins to ramp up, true according to described total blast rate of climb
Fixed described rotating speed of target；
Second control unit, for controlling described air compression plant to operate by described rotating speed of target.
12. operation control systems as claimed in claim 11 are it is characterised in that described air compression plant includes the first compression
Machine and the second compressor, described second control unit includes：
3rd control subelement, for when described total blast is less than default first lower limit, only starting described first compressor,
And control described first compressor to operate by described rotating speed of target；
4th control subelement, for when described total blast is higher than described default first lower limit and is less than described default second
During lower limit, start the first compressor and described second compressor, and control two compressors to press described rotating speed of target operating, institute
State the second lower limit and be less than described minimum working pressure.
A kind of 13. air compressor systems are it is characterised in that setting is just like the operation control described in any one of claim 7～12
System processed.
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| CN106438321B (en) | 2018-12-14 |
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