CN108757418B - Piston type air compressor fault early warning method, piston type air compressor and track train - Google Patents
Piston type air compressor fault early warning method, piston type air compressor and track train Download PDFInfo
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- CN108757418B CN108757418B CN201810539807.0A CN201810539807A CN108757418B CN 108757418 B CN108757418 B CN 108757418B CN 201810539807 A CN201810539807 A CN 201810539807A CN 108757418 B CN108757418 B CN 108757418B
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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
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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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
- F04B49/10—Other safety measures
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
This application discloses a kind of piston type air compressor fault early warning methods, using the difference between the normal current value under the actual current value and normal operating conditions that are able to reflect piston type air compressor working condition as the judgement basis of fault pre-alarming, when for by the piston type air compressor for using three-phase alternating current, pass through two parameters of difference ratio of difference and the normal current value upper limit between the current ratio and two-phase actual current value between any one actual current value and the normal current value upper limit, it is compared respectively with preset current threshold and difference threshold, and meets at the same time and be greater than two threshold values and obtain fault level after being maintained for more than preset duration and issue corresponding fault pre-alarming.Compared to existing fault pre-alarming mode, using the current value that can more accurately reflect air compressor machine working condition, mode is more scientific, human cost is lower, fault pre-alarming is more preferably accurate, in time.The application further simultaneously discloses a kind of piston type air compressor and rail high speed train, all has above-mentioned beneficial effect.
Description
Technical field
This application involves engineering equipment fault pre-alarming field, in particular to a kind of piston type air compressor fault early warning method,
Piston type air compressor and track train.
Background technique
Rail vehicle braking system is generally braked using high pressure gas, and common is to be carried out using air compressor machine to air
Compression, to use compressed air to brake the train run at high speed, therefore the working condition of air compressor machine is directly related to system
The function of dynamic system, and train braking system is fully functional, be guarantee all passenger survivals safety on train it is important before
It mentions.
Country's railcar and intercity emu vehicle generally use piston type air compressor at present, such piston type air compressor
Two ways is primarily present in realization fault pre-alarming: first is that online fault pre-alarming, since piston type air compressor is with 100%
Duty cycle (time that no centre stops working), thus can by monitoring piston type air compressor operating when temporal characteristics come
Realize failure and abnormal judgement, but such mode rate of false alarm is higher and very relies on experience；Second is that regular by external maintenance personnel
Check piston type air compressor external presentation combination experience carry out breakdown judge, that is, pass through wiring condition, lube color,
The components such as filter element state judge that such method not only needs human cost higher and time-consuming effort.
Therefore, how to overcome items technological deficiency existing for existing piston type air compressor fault mechanism, a kind of manpower is provided
Cost is lower, the more accurate piston type air compressor fault pre-alarming mechanism of more scientific and fault pre-alarming be those skilled in the art urgently
Problem to be solved.
Summary of the invention
The one of purpose of the application is to provide a kind of piston type air compressor fault early warning method, using being able to reflect piston
Difference between the actual current value of formula air compressor machine working condition and the normal current value under normal operating conditions is as fault pre-alarming
Judgement basis, when for by the piston type air compressor for using three-phase alternating current, by any one actual current value and normal
Current ratio between the current value upper limit and appoint difference ratio two of difference and the normal current value upper limit between two-phase actual current value
Parameter is compared with preset current threshold and difference threshold respectively, and is met at the same time and be greater than two threshold values and remain super
Fault level is obtained after crossing preset duration and issues corresponding fault pre-alarming.Compared to existing fault pre-alarming mode, using more capable of
The current value of air compressor machine working condition is enough accurately reflected, mode is more scientific, human cost is lower, fault pre-alarming is more preferably accurate,
In time.
The another object of the application is the provision of a kind of piston type air compressor and is provided with the piston type air compressor
High-speed train.
To achieve the above object, the application provides a kind of piston type air compressor fault early warning method, comprising:
The actual current value of each phase of piston type air compressor three-phase power input end is obtained using current sensor；
The current ratio of any phase actual current value with the corresponding phase pre-set current value upper limit is calculated；
The difference ratio of difference and the General Current value upper limit between appointing two-phase actual current value is calculated；
Judge whether the current ratio is greater than preset current threshold, whether the difference ratio is greater than preset difference
Threshold value；
If being all larger than, abnormal marking is added for the piston type air compressor, until not being simultaneously greater than the current threshold
With the abnormal marking is just removed when the difference threshold；
Count the abnormal marking on the piston type air compressor there are the time, obtain practical exception duration；
When the abnormal duration of the reality is greater than default abnormal maximum time limit, according to more than the current threshold and the difference
It is worth piston type air compressor described in the different decision of threshold size and is in corresponding failure grade, and is sent accordingly by preset path
Fault pre-alarming signal.
Optionally, the piston type pneumatics according to the different decision for being more than the current threshold and the difference threshold size
Machine is in corresponding failure grade, comprising:
When the current ratio is greater than the first current threshold, less than the second current threshold and the difference ratio is greater than first
Difference threshold, less than the second difference threshold when, determine that the piston type air compressor is currently at minor failure state；
When the current ratio is greater than second current threshold and the difference ratio is greater than second difference threshold
When, determine that the piston type air compressor is currently at severe fault condition.
Optionally, the actual current value of each phase of piston type air compressor three-phase power input end is obtained using current sensor,
Include:
Using three current sensors respectively from the power connecting column of the piston type air compressor three-phase power input end
Obtain the preliminary current value of each phase input current；
Delay disposal is carried out to the preliminary current value that gets until the preliminary current value within a preset time interval
Fluctuation is less than default error range, obtains the actual current value.
Optionally, the piston type air compressor fault early warning method further include:
The failure that preset quantity is arranged for each fault level in advance solves and maintenance scheme.
Optionally, corresponding fault pre-alarming signal is sent by preset path, comprising:
The fault pre-alarming signal of generation corresponding with fault level is sent to drivers' cab by train bus-line.
Optionally, it is specially 130% that first current threshold, which is specially 115%, second current threshold, and described
One difference threshold is specially that 10%, the second threshold ratio is specially 20%.
To achieve the above object, present invention also provides a kind of piston type air compressor, which includes:
Piston type air compressor ontology, is powered using three-phase alternating current, is used for compressed air；
Current sensor module is connected with the three-phase current input terminal of the piston type air compressor ontology, for obtaining simultaneously
Send the actual current value of each phase of piston type air compressor ontology；
Logic control element is connected with the current sensor module, for according to each phase actual current value received
The current ratio of any phase actual current value with the corresponding phase pre-set current value upper limit is calculated；It is calculated and appoints the practical electricity of two-phase
The difference ratio of difference and the General Current value upper limit between flow valuve；Judge the current ratio whether be greater than preset current threshold,
Whether the difference ratio is greater than preset difference threshold；If being all larger than, abnormal marking is added for the piston type air compressor,
The abnormal marking is just removed when until not being simultaneously greater than the current threshold and the difference threshold；It is empty to count the piston type
On press the abnormal marking there are the time, obtain practical exception duration；When the practical abnormal duration is greater than default exception
When maximum time limit, at the piston type air compressor according to the different decision for being more than the current threshold and the difference threshold size
Corresponding fault pre-alarming signal is sent in corresponding failure grade, and by preset path.
Optionally, the piston type air compressor further include:
Combined aural and visual alarm is connected with the logic control element, for the difference according to the fault pre-alarming signal received
It lights the indicator light of corresponding color and issues corresponding voice prompting.
Optionally, the piston type air compressor further include:
Wireless transport module is connected with the logic control element, and the fault pre-alarming signal for that will generate passes through wireless
Signal is sent to ground command center.
To achieve the above object, present invention also provides a kind of high-speed train, including dynamical system, braking system,
The braking system includes that the piston type air compressor as described in above content and the piston type as described in above content are empty
Press fault early warning method.
Obviously, a kind of piston type air compressor fault early warning method provided herein, it is empty using piston type is able to reflect
Difference sentencing as fault pre-alarming between the actual current value of compressor operation state and the normal current value under normal operating conditions
Disconnected basis, when for by the piston type air compressor for using three-phase alternating current, passes through any one actual current value and normal current
It is worth the current ratio between the upper limit and appoints two parameters of difference ratio of difference and the normal current value upper limit between two-phase actual current value,
It is compared respectively with preset current threshold and difference threshold, and meets at the same time and be greater than two threshold values and be maintained for more than default
Fault level is obtained after duration and issues corresponding fault pre-alarming.Compared to existing fault pre-alarming mode, using more can be accurate
Reflect the current value of air compressor machine working condition, mode is more scientific, human cost is lower, fault pre-alarming is more preferably accurate, in time.This
It application while additionally providing a kind of piston type air compressor and being provided with the high-speed train of the piston type air compressor, all have
Above-mentioned beneficial effect, details are not described herein.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow chart of piston type air compressor fault early warning method provided by the embodiments of the present application；
Fig. 2 is the flow chart of another piston type air compressor fault early warning method provided by the embodiments of the present application；
Fig. 3 is a kind of structural block diagram of piston type air compressor provided by the embodiments of the present application；
Fig. 4 is a kind of practical structures schematic diagram of piston type air compressor provided by the application is implemented.
Label is described as follows in Fig. 3 and Fig. 4:
Piston type air compressor ontology .110 current sensor module .120 logic control element .130
Specific embodiment
The core of the application is to provide a kind of piston type air compressor fault early warning method, piston type air compressor and setting
Have the rail high speed train of the piston type air compressor, using be able to reflect the actual current value of piston type air compressor working condition with
Judgement basis of the difference between normal current value as fault pre-alarming under normal operating conditions, when to use three-phase alternating current
When for piston type air compressor, by the current ratio between any one actual current value and the normal current value upper limit and appoint two-phase real
Two parameters of difference ratio of difference and the normal current value upper limit between the current value of border, respectively with preset current threshold and difference threshold
Value is compared, and is met at the same time and be greater than two threshold values and obtain fault level after being maintained for more than preset duration and issue corresponding
Fault pre-alarming.Compared to existing fault pre-alarming mode, the current value that can more accurately reflect air compressor machine working condition, side are used
Formula is more scientific, human cost is lower, fault pre-alarming is more preferably accurate, in time.
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
All other embodiment obtained without making creative work, shall fall in the protection scope of this application.
Embodiment one
Below in conjunction with Fig. 1, Fig. 1 is a kind of process of piston type air compressor fault early warning method provided by the embodiments of the present application
Figure, the application are applied on high-speed train using the piston type air compressor of three-phase alternating current power supply using common as object,
Specifically includes the following steps:
S101: the actual current value of each phase of piston type air compressor three-phase power input end is obtained using current sensor；
This step is intended to obtain the reality of each phase of piston type air compressor three-phase power input end using current sensor measurement
Current value.Specifically, the power connecting column that the three-phase current input terminal of piston type air compressor is typically provided with convenient for connection, therefore can incite somebody to action
Current sensor is arranged between power supply and power connecting column, also just corresponding to need three due to using three-phase alternating current
A current sensor measures to realize.It is of course also possible to current sensor and piston type air compressor be integrated, but in electricity
Road connects after alternating current incoming end is still arranged in, before operating circuit, need to only be completed by external data line real
The transmission of border current value.
Further, actual current value use, accurate is calculated for subsequent step to make to get, prevented because of piston
The usually existing current fluctuation in starting/on-off of formula air compressor machine interferes collected actual current value, can also make
Current value when it is in stable state is obtained with delay stable strategy.
S102: the current ratio of any phase actual current value with the corresponding phase pre-set current value upper limit is calculated；
S103: the difference ratio of difference and the General Current value upper limit between appointing two-phase actual current value is calculated；
This practical application scene of S102, S103 combination high-speed train, gives each phase for how handling and getting
The mode of actual current value, that is, whether the actual current value for calculating any one, which exceeds specified current margin and calculate, is appointed a two-phase
The ratio of actual current value difference and rated operational current range.
Firstly, every piston type air compressor is set with rated operational current range when manufacturing factory, i.e. the piston type
Air compressor machine is in the running current range that each phase current values should be under normal operating conditions.According to the actual situation not
Together, a general rated operational current range can be used when the rated operational current range difference very little of each phase in three-phase
The actual current value of each phase is judged simultaneously, and whether usually mainly see when judging is more than rated operational current range
The upper limit because will not all be less than lower limit in most cases.
What S102 was calculated is that the actual current value of each phase and the ratio between the corresponding pre-set current value upper limit are (corresponding mutually specified
Operating current upper limit value or general rated operational current upper limit value), it is intended to obtain each phase actual current value of a description and benchmark
The ratio of size relation between reference value；What S103 was calculated is the difference and the General Current value upper limit between the actual current value for appointing two-phase
Ratio between (general rated operational current upper limit value, because herein being related to multiphase), it is intended to obtain a description and appoint two-phase real
Between the current value of border between difference and reference value size relation ratio.Since two different size relationships of description have been calculated
Ratio, the subsequent similar parameter by when being in failure with identical air compressor machine based on it is compared, to be based on current characteristic
Carry out fault pre-alarming.
S104: judge whether current ratio is greater than preset current threshold, whether difference ratio is greater than preset difference threshold
Value；
On the basis of S102 and S103, this step is intended to judge whether current ratio is greater than preset current threshold simultaneously
Whether value, difference ratio are greater than preset difference threshold.It is described above, it is point that ratio calculation, which is with reference value in the process,
Mother, and reference value is equal to the rated operational current upper limit value of corresponding piston type air compressor, therefore the reason of current ratio
By value range are as follows: (0, ∞), but consider actual conditions, then illustrate that equipment is in when current ratio is less than 1 and works normally
In current range, and equipment has just been in very serious collapse state when current ratio is 2, therefore only needs to judge the electricity
Whether stream value is greater than a current threshold greater than 1, and specific value also needs flexibly to set according to the actual situation.
Likewise, difference ratio, due to the difference that molecule is any two actual current values, the theory of difference takes
It is worth range are as follows: [0,1], but consider actual conditions, it takes less than both ends, usually when the difference ratio is greater than 0.3 (30%)
When damage it is also very serious because difference is practical smaller between each phase of three-phase alternating current, which is also required to basis
Actual conditions and flexibly set.
It is also to be noted that this step only current ratio be greater than predetermined current threshold while, difference ratio
The judgement by this step is just thought greater than preset difference value threshold value, and then jumps to the subsequent processing steps by judgement, if two
Plant any of ratio is no more than corresponding preset threshold, then it is assumed that is unsatisfactory for judgement by condition, i.e., can only jump to not
Pass through the processing step of judgement.
S105: adding abnormal marking for piston type air compressor, until when not being simultaneously greater than current threshold and difference threshold
Remove abnormal marking；
This step is established on the basis of the judging result of S104 is that two kinds of ratios are all larger than corresponding preset threshold, explanation
Meet abnormality decision conditions, therefore tentatively from the size characteristic of the actual current of feedback for there are the pistons of such situation
Formula air compressor machine adds abnormal marking, and the abnormal marking is removed when the Rule of judgment of S104 is unsatisfactory for, so as to subsequent step root
Duration judgement is carried out according to the abnormal marking.
S106: statistics piston type air compressor on abnormal marking there are the time, obtain practical exception duration；
On the basis of S105, this step be intended to count abnormal marking on each piston type air compressor there are the time, with
To the abnormal duration of reality, duration is maintained to obtain a more accurately event convenient for combining on the basis of meeting S104 Rule of judgment
Hinder early warning and consequent malfunction determines.
S107: when the abnormal duration of reality is greater than default abnormal maximum time limit, according to more than current threshold and difference threshold
The different decision piston type air compressor of size is in corresponding failure grade, and sends corresponding fault pre-alarming by preset path and believe
Number.
On the basis of S106, this step is intended to judge whether practical exception duration is greater than default abnormal maximum time limit, and
It is living more than the judgement of different sizes that predetermined current threshold, difference ratio are more than preset difference value threshold value according to current ratio when being greater than
Plug air compressor machine is in corresponding fault level, and sends corresponding fault pre-alarming information.
The deciding grade and level of fault level is done according to being more than the size of numerical value, mode is varied, for example, can set multiple big
Small different current threshold and difference threshold see which threshold value actual current ratio and difference ratio are specifically greater than or are greater than how many
The modes such as a threshold value.The mode for showing the corresponding fault pre-alarming information of different faults grade simultaneously also has very much, using being sent to
Different major executives send the warning information comprising different content, call corresponding signal prior-warning device etc., herein
It not to be limited specifically there are the step of plurality of optional mode, in combination with actual conditions flexible choice.
Based on the above-mentioned technical proposal, a kind of piston type air compressor fault early warning method provided by the embodiments of the present application utilizes
The difference being able to reflect between the actual current value of piston type air compressor working condition and the normal current value under normal operating conditions
As the judgement basis of fault pre-alarming, when for by the piston type air compressor for using three-phase alternating current, pass through any one reality
Difference and the normal current value upper limit between current ratio and two-phase actual current value between current value and the normal current value upper limit
Two parameters of difference ratio, are compared with preset current threshold and difference threshold respectively, and meet be greater than two at the same time
It threshold value and is maintained for more than after preset duration and obtains fault level and issue corresponding fault pre-alarming.Compared to existing fault pre-alarming side
Formula, using the current value that can more accurately reflect air compressor machine working condition, mode is more scientific, human cost is lower, failure is pre-
It is alert more preferably accurate, timely.
Embodiment two
Below in conjunction with Fig. 2, Fig. 2 is the stream of another piston type air compressor fault early warning method provided by the embodiments of the present application
Cheng Tu, specifically includes the following steps:
S201: it is obtained from the power connecting column of piston type air compressor three-phase power input end respectively using three current sensors
The preliminary current value of each phase input current；
S202: carrying out delay disposal to the preliminary current value that gets until preliminary current value within a preset time interval
Fluctuation is less than default error range, obtains actual current value；
S201 obtains the preliminary current value of three input terminals of three-phase power input end by three current sensors respectively,
And wild effect is eliminated using delay disposal mode in S202, so that the fluctuation obtained within a preset time interval is less than in advance
If the actual current value of error range.
S203: the current ratio of any phase actual current value with the corresponding phase pre-set current value upper limit is calculated；
S204: the difference ratio of difference and the General Current value upper limit between appointing two-phase actual current value is calculated；
S205: judge whether current ratio is greater than preset current threshold, whether difference ratio is greater than preset difference threshold
Value；
S206: adding abnormal marking for piston type air compressor, until when not being simultaneously greater than current threshold and difference threshold
Remove abnormal marking；
S207: statistics piston type air compressor on abnormal marking there are the time, obtain practical exception duration；
S208: judge whether practical exception duration is greater than default abnormal maximum time limit；
A kind of setting value for the default abnormal maximum time limit for including but is not limited to are as follows: 7 consecutive days.
S209: when current ratio is greater than the first current threshold, less than the second current threshold and difference ratio to be greater than first poor
Be worth threshold value, less than the second difference threshold when, determine piston type air compressor be currently at minor failure state；
This implementation is by setting multiple current thresholds and difference threshold of different sizes, to determine current ratio and difference
Which section ratio is specifically in, to determine corresponding fault level.
It is described by this step it is found that the second current threshold is greater than the first current threshold, the second difference threshold is greater than first
Difference threshold, therefore when current ratio is between the first current threshold and the second current threshold, difference ratio is in first poor
When being worth between threshold value and the second difference threshold, will maintain such situation is more than at the piston type air compressor judgement of default abnormal duration
In minor failure state.
S210: when current ratio is greater than the second current threshold and difference ratio is greater than the second difference threshold, determine piston
Formula air compressor machine is currently at severe fault condition；
Similarly with S209, be different from S209 current ratio and difference ratio locating for threshold interval, the electric current in this step
Ratio is not only greater than the first current threshold also greater than the second current threshold, difference ratio be not only greater than the first difference threshold also greater than
Second difference threshold illustrates the failure shape more corresponding than S209 in size of current feature of Piston Air Compressor in such cases
Condition is more serious, because the actual current value of a certain phase is significantly greater than reference value, appoints the difference between two-phase actual current value
The ratio for accounting for reference value also significantly increases, therefore the corresponding piston type air compressor of such situation is determined as in serious event
Barrier state.
The present embodiment combines the current parameters feature for the piston type air compressor being actually disposed on high-speed train, provides
A kind of set threshold value of reference: the first current threshold is specially that the 115%, second current threshold is specially 130%, the first difference
Threshold value is specially that 10%, second difference threshold is specially 20%.
S211: the fault pre-alarming signal of generation corresponding with fault level is sent to drivers' cab by train bus-line.
The present embodiment is defined on the basis of example 1 and is increased to some steps some steps and obtains, tool
There are all beneficial effects of embodiment one, and subsequent to calculate the actual current value used more by increasing delay disposal mode newly
It is accurate to add, and final result confidence level is higher, concurrently sets two different size of current thresholds and difference threshold convenient for further
It determines fault level locating for air compressor machine, and sends corresponding fault pre-alarming signal, practical effect is more preferably.
Because situation is complicated, it can not enumerate and be illustrated, those skilled in the art should be able to recognize according to the application
The basic skills principle combination actual conditions of offer may exist many examples, in the case where not paying enough creative works,
It should within the scope of protection of this application.
Fig. 3 is referred to below, and Fig. 3 is a kind of structural block diagram of piston type air compressor provided by the embodiments of the present application, the work
Plug air compressor machine 100 may include:
Piston type air compressor ontology 110, is powered using three-phase alternating current, is used for compressed air；
Current sensor module 120 is connected, for obtaining with the three-phase current input terminal of piston type air compressor ontology 110
And send the actual current value of each phase of piston type air compressor ontology 110；
Logic control element 130 is connected with current sensor module 120, for according to each phase actual current received
The current ratio of any phase actual current value with the corresponding phase pre-set current value upper limit is calculated in value；It is calculated and appoints two-phase practical
The difference ratio of difference and the General Current value upper limit between current value；Judge whether current ratio is greater than preset current threshold, difference
Whether value ratio is greater than preset difference threshold；If being all larger than, abnormal marking is added for piston type air compressor 100, until not
Simultaneously greater than current threshold and abnormal marking is just removed when difference threshold；Abnormal marking deposits on statistics piston type air compressor 100
In the time, practical exception duration is obtained；When the abnormal duration of reality is greater than default abnormal maximum time limit, according to more than current threshold
It is in corresponding failure grade with the different decision piston type air compressor 100 of difference threshold size, and phase is sent by preset path
The fault pre-alarming signal answered.
Further, which can also include:
Combined aural and visual alarm is connected with logic control element 120, for the difference according to the fault pre-alarming signal received
The indicator light and the corresponding voice prompting of sending of bright corresponding color；
Wireless transport module is connected with logic control element 120, for the fault pre-alarming signal of generation to be passed through wireless communication
Number it is sent to ground command center.
The application also passes through Fig. 4 and provides a kind of practical structures schematic diagram of piston type air compressor, the English of the LCU in figure
Full name are as follows: Logic Control Unit, the entitled logic control element of Chinese.
Based on the above embodiment, the application goes back while providing a kind of high-speed train, including dynamical system, braking system
System, braking system include piston type air compressor and the piston type pneumatics as described in above content as described in above content
Machine fault early warning method.
Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities
The difference of example is applied, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
Speech, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part illustration
.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond scope of the present application.
Specific examples are used herein to illustrate the principle and implementation manner of the present application, and above embodiments are said
It is bright to be merely used to help understand the present processes and its core concept.For those skilled in the art,
Under the premise of not departing from the application principle, can also to the application, some improvement and modification can also be carried out, these improvement and modification
It falls into the protection scope of the claim of this application.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also other elements including being not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or equipment for including element.
Claims (10)
1. a kind of piston type air compressor fault early warning method characterized by comprising
The actual current value of each phase of piston type air compressor three-phase power input end is obtained using current sensor；
The current ratio of any phase actual current value with the corresponding phase pre-set current value upper limit is calculated；
The difference ratio of difference and the General Current value upper limit between appointing two-phase actual current value is calculated；
Judge whether the current ratio is greater than preset current threshold, whether the difference ratio is greater than preset difference threshold
Value；
If being all larger than, abnormal marking is added for the piston type air compressor, until not being simultaneously greater than the current threshold and institute
The abnormal marking is just removed when stating difference threshold；
Count the abnormal marking on the piston type air compressor there are the time, obtain practical exception duration；
When the abnormal duration of the reality is greater than default abnormal maximum time limit, according to more than the current threshold and the difference threshold
It is worth piston type air compressor described in the different decision of size and is in corresponding failure grade, and corresponding failure is sent by preset path
Pre-warning signal.
2. method according to claim 1, which is characterized in that according to more than the current threshold and the difference threshold size
Different decision described in piston type air compressor be in corresponding failure grade, comprising:
When the current ratio is greater than the first current threshold, less than the second current threshold and the difference ratio is greater than the first difference
Threshold value, less than the second difference threshold when, determine that the piston type air compressor is currently at minor failure state；
When the current ratio is greater than second current threshold and the difference ratio is greater than second difference threshold, sentence
The fixed piston type air compressor is currently at severe fault condition.
3. method according to claim 1, which is characterized in that obtain piston type air compressor three phase mains using current sensor
The actual current value of each phase of input terminal, comprising:
It is obtained from the power connecting column of the piston type air compressor three-phase power input end respectively using three current sensors
The preliminary current value of each phase input current；
Delay disposal is carried out to the preliminary current value got until the fluctuation of the preliminary current value within a preset time interval
Less than default error range, the actual current value is obtained.
4. method according to claim 1, which is characterized in that further include:
The failure that preset quantity is arranged for each fault level in advance solves and maintenance scheme.
5. method according to claim 1, which is characterized in that send corresponding fault pre-alarming signal by preset path, wrap
It includes:
The fault pre-alarming signal of generation corresponding with fault level is sent to drivers' cab by train bus-line.
6. method according to claim 2, which is characterized in that first current threshold is specially 115%, second electricity
Flowing threshold value is specially 130%, and first difference threshold is specially that 10%, second difference threshold is specially 20%.
7. a kind of piston type air compressor characterized by comprising
Piston type air compressor ontology, is powered using three-phase alternating current, is used for compressed air；
Current sensor module is connected, for obtaining and sending with the three-phase current input terminal of the piston type air compressor ontology
The actual current value of each phase of piston type air compressor ontology；
Logic control element is connected with the current sensor module, for being calculated according to each phase actual current value received
Obtain the current ratio of any phase actual current value with the corresponding phase pre-set current value upper limit；It is calculated and appoints two-phase actual current value
Between difference and the General Current value upper limit difference ratio；Judge whether the current ratio is greater than preset current threshold, described
Whether difference ratio is greater than preset difference threshold；If being all larger than, abnormal marking is added for the piston type air compressor, until
The abnormal marking is just removed when not being simultaneously greater than the current threshold and the difference threshold；Count the piston type air compressor
The upper abnormal marking there are the time, obtain practical exception duration；When the practical abnormal duration is greater than default abnormal duration
When the upper limit, the piston type air compressor according to the different decision for being more than the current threshold and the difference threshold size is in phase
Fault level is answered, and corresponding fault pre-alarming signal is sent by preset path.
8. piston type air compressor according to claim 7, which is characterized in that further include:
Combined aural and visual alarm is connected with the logic control element, for being lighted according to the difference of the fault pre-alarming signal received
The indicator light and the corresponding voice prompting of sending of corresponding color.
9. piston type air compressor according to claim 7, which is characterized in that further include:
Wireless transport module is connected with the logic control element, for the fault pre-alarming signal of generation to be passed through wireless signal
It is sent to ground command center.
10. a kind of high-speed train, including dynamical system, braking system, which is characterized in that the braking system includes as weighed
Benefit requires 7 to 9 described in any item piston type air compressors and the braking system to be able to carry out as claim 1 to 6 is any
Piston type air compressor fault early warning method described in.
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