CN106438579A - Hydraulic valve debugging method - Google Patents
Hydraulic valve debugging method Download PDFInfo
- Publication number
- CN106438579A CN106438579A CN201611062027.9A CN201611062027A CN106438579A CN 106438579 A CN106438579 A CN 106438579A CN 201611062027 A CN201611062027 A CN 201611062027A CN 106438579 A CN106438579 A CN 106438579A
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- China
- Prior art keywords
- hydraulic valve
- pressure
- valve
- valve rod
- adjustment method
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
Abstract
The invention provides a hydraulic valve debugging method. The method comprises the following steps that S1, magnetic field intensity changes of an electromagnetic coil of a hydraulic valve and at least one working parameter of pressure, flow and current parameters of a valve rod of the hydraulic valve are tested, and test results are transmitted to a controller; S2, according to the magnetic field intensity changes of the electromagnetic coil of the hydraulic valve, the stroke direction of the valve rod is determined, and the parameters of the valve rod of the hydraulic valve are compared with preset thresholds; and S3, whether the working state of the valve rod is normal or not is determined, and when abnormality occurs, the debugging direction is determined. By means of the method, failure judgment can be accurately made in real time, corresponding debugging modes are started, and failures are solved.
Description
Technical field
The invention belongs to technical field of engineering machinery, particularly to a kind of hydraulic valve adjustment method.
Background technology
At present, slide-valve gear is to adopt a kind of most versions in all kinds of hydraulic valves, and guiding valve is by valve body, valve element and valve
Three, chamber critical piece is constituted, and by changing position in valve body valve pocket for the valve element, guiding valve can realize the change of fluid flow direction
And break-make.Slide valve jam or even clamping fault are one of most commonly seen fault in hydraulic system and failure mode, typically can divide
For hydraulic pressure bite, clamping and mechanical bite clamping two big class.Popular say, bite refers to the middle shape between nominal situation and clamping
State, clamping is exactly that valve element is not active, and bite refers to that valve element is mobile difficult, not as smooth during normal work, is the omen of clamping,
Solve in time to avoid the generation of clamping.
Wherein, hydraulic pressure bite, clamping cause valve element error in geometrical form and coaxiality error to produce mainly due to machining
Raw radial direction unbalanced pressure causes, and mechanical bite, clamping are then mainly due to running the particulate pollutant at scene in guiding valve
Gradually deposit and cause in gap.There is constant pressure reduction at the radial clearance two ends constituting in valve rod and valve body, when hydraulic oil is dirty
When dye granule brings gap into, because the ability depth type that the surface of gap runner hole wall also has capture pollution granule filters effect
Answer and constantly capture pollution granule, and occur to pollute particle entrapment, thus producing pollution clamping force.Briefly, that is, pollute clamping
It is the main Types of mechanical clamping, radial direction force unbalance is the main cause causing hydraulic lock.And bite is often by slight dirt
Dye clamping or radial direction force unbalance cause, and resistance is less.
In prior art, the method for exclusion above two fault mainly has two kinds：One is in processing and live running
In take measures, reduce the probability that breaks down, such as install in systems fine filter, rationally open up on valve rod balancing slit,
Strict process and assemble quality etc.；Another kind of method is exactly online real-time fault diagnosis and failture evacuation.At present, there is no sensitiveer,
Accurately online real time fault diagnosis device, though or have similar device complex structure, with high costs.
Therefore, need now a kind of hydraulic valve adjustment method badly, accurately can carry out breakdown judge in real time, and enter corresponding
Debugging mode, solves its fault.
Content of the invention
The present invention proposes a kind of hydraulic valve adjustment method, solves in prior art and cannot in time hydraulic valve be adjusted
Examination, solves the problems, such as its fault.
The technical scheme is that and be achieved in that：Hydraulic valve adjustment method, comprises the steps：
S1：The pressure of valve rod of the change of magnetic field strength of test hydraulic valve solenoid and hydraulic valve, flow, electric current ginseng
At least one of number running parameter, and test result is transferred to controller；
S2：According to the change of magnetic field strength of hydraulic valve solenoid, determine the stroke directions of valve rod by valve rod of hydraulic valve
Parameter is compared with pre-set threshold value；
S3：Determine whether valve rod working condition is normal, and when abnormal occur, determine debugging direction.
As one kind preferred embodiment, also include in described step S1 detecting hydraulic valve working condition, generate specific
The vibrating signal of frequency, amplitude and waveform, and the valve rod controller of hydraulic valve that described vibrating signal is added to, gather hydraulic valve
Vibrating signal waveform on middle solenoid, and the first control signal in waveform is separated with tremor waveform, will obtain after separating
To control signal feed back to and generate the after signal input part and the signal subtraction for controlling valve rod of hydraulic valve displacement that sets
Two control signals, the average information of the second control signal obtaining after separation is carried out breakdown judge with vibrating signal output.
As one kind preferred embodiment, described breakdown judge includes the meansigma methodss letter according to the control signal detecting
The frequency of breath and vibrating signal, peak-to-peak value, wave distortion, provide degree of membership by Fuzzy multiple criteria decision-making method and judge；According to
Judged result, determines controller output.
As one kind preferred embodiment, determine in step S3 that valve rod working condition is whether normal, including by measurement
Valve rod running parameter and pre-set threshold value are compared, when actual measurement running parameter is more than the first threshold values or is less than the second threshold values,
Determine whether valve rod work is abnormal, and Exception Type is greater than the first threshold values or is less than the second threshold values.
As one kind preferred embodiment, gather the pressure of valve rod, gather oil-in including using pressure transducer
Pressure signal, and be compared with the first threshold values and the second threshold values respectively.
As one kind preferred embodiment, the pressure of the valve rod of hydraulic valve in step S2, flow, in current parameters extremely
A few running parameter, generates braking characteristic curve during braking, determines correcting variable.
As one kind preferred embodiment, in braking procedure, carry out n times continuity in several cycles, in each circulation
In, the parameter using previous cycle is corrected to predetermined braking characteristic curve according to recurrence formula.
As one kind preferred embodiment, default necessity pressure, the pressure collecting according to pressure transducer are also included
Increase time or pressure demand, produce for correction variable, determine correction coefficient, by this correction coefficient with predetermined
Braking characteristic curve is added/is multiplied, and produces correction braking characteristic curve.
As one kind preferred embodiment, described correction coefficient is expressed as：
Kn=1- (1-Kfil,n-1)*√T1/T2, wherein, n is the quantity of K, T1 be current pressure increase total increase time/
Pressure demand, T2 is to increase the time by the nominal pressure that desired pressure differential and nominal gradiometer calculate, and pressure differential is by previous
Pressure drop determines.
As one kind preferred embodiment, after failure judgement type, provide follow-up work instruction, including entrance accordingly event
Barrier solution pattern.
After employing technique scheme, the invention has the beneficial effects as follows：The whole debugging process of the present invention automatically completes,
Shorten the time required for detection debugging, improve the efficiency of detection debugging；The operation of hydraulic valve, detection, judgement decrease
Artificial because the impact to test result is it is ensured that the correctness of debugging；Can bite tighten have in the detection of fault non-
Chang master-hand's susceptiveness, using specific vibrating signal it is ensured that the monotonicity of detection signal；The work of intermittent cyclic can be utilized
Make mode, reducing energy consumption.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention 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 invention, for those of ordinary skill in the art, without having to pay creative labor, also may be used
So that other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of adjustment method of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, 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 protection of the invention.
As shown in figure 1, the present embodiment hydraulic valve adjustment method, comprise the steps：
S1：The pressure of valve rod of the change of magnetic field strength of test hydraulic valve solenoid and hydraulic valve, flow, electric current ginseng
At least one of number running parameter, and test result is transferred to controller；
S2：According to the change of magnetic field strength of hydraulic valve solenoid, determine the stroke directions of valve rod by valve rod of hydraulic valve
Parameter is compared with pre-set threshold value；
S3：Determine whether valve rod working condition is normal, and when abnormal occur, determine debugging direction.
As one kind preferred embodiment, also include in described step S1 detecting hydraulic valve working condition, generate specific
The vibrating signal of frequency, amplitude and waveform, and the valve rod controller of hydraulic valve that described vibrating signal is added to, gather hydraulic valve
Vibrating signal waveform on middle solenoid, and the first control signal in waveform is separated with tremor waveform, will obtain after separating
To control signal feed back to and generate the after signal input part and the signal subtraction for controlling valve rod of hydraulic valve displacement that sets
Two control signals, the average information of the second control signal obtaining after separation is carried out breakdown judge with vibrating signal output.
Described breakdown judge includes frequency according to the average value information of control signal that detects and vibrating signal, peak-to-peak
Value, wave distortion, provide degree of membership by Fuzzy multiple criteria decision-making method and judge；According to judged result, determine that controller exports
Power.
Determine in step S3 whether valve rod working condition is normal, enters with pre-set threshold value including by the valve rod running parameter of measurement
Row compares, and when actual measurement running parameter is more than the first threshold values or is less than the second threshold values, determines whether valve rod work is abnormal, and
Exception Type is greater than the first threshold values or is less than the second threshold values.
Collection valve rod pressure, including using pressure transducer gather oil-in pressure signal, and respectively with the first valve
Value and the second threshold values are compared.
At least one of the pressure of the valve rod of hydraulic valve, flow, current parameters running parameter in step S2, in the braking phase
Between generate braking characteristic curve, determine correcting variable.
In braking procedure, carry out n times continuity in several cycles, in each cycle, using the parameter root of previous cycle
According to recurrence formula, predetermined braking characteristic curve is corrected.
Also include default necessity pressure, time or pressure demand are increased according to the pressure that pressure transducer collects, produces
The raw variable for correction, determines correction coefficient, this correction coefficient be added/is multiplied with predetermined braking characteristic curve,
Produce correction braking characteristic curve.
Described correction coefficient is expressed as：
Kn=1- (1-Kfil,n-1)*√T1/T2, wherein, n is the quantity of K, T1 be current pressure increase total increase time/
Pressure demand, T2 is to increase the time by the nominal pressure that desired pressure differential and nominal gradiometer calculate, and pressure differential is by previous
Pressure drop determines.
After failure judgement type, provide follow-up work instruction, solve pattern including entering corresponding failure.
The operation principle of this hydraulic valve adjustment method is：Whole debugging process automatically completes, and shortens detection debugging institute
The time needing, improve the efficiency of detection debugging；The operation of hydraulic valve, detection, judgement decrease artificial because tying to test
Fruit impact it is ensured that debugging correctness；Can tighten in bite and very master-hand's susceptiveness is had on the detection of fault, utilize
Specific vibrating signal is it is ensured that the monotonicity of detection signal；The working method of intermittent cyclic, reducing energy consumption can be utilized.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of hydraulic valve adjustment method is it is characterised in that comprise the steps：
S1：In the pressure of valve rod of the change of magnetic field strength of test hydraulic valve solenoid and hydraulic valve, flow, current parameters
At least one running parameter, and test result is transferred to controller；
S2：According to the change of magnetic field strength of hydraulic valve solenoid, determine the parameter by valve rod of hydraulic valve for the stroke directions of valve rod
It is compared with pre-set threshold value；
S3：Determine whether valve rod working condition is normal, and when abnormal occur, determine debugging direction.
2. hydraulic valve adjustment method according to claim 1 is it is characterised in that also include in described step S1 detecting hydraulic pressure
Valve working condition, generates the vibrating signal of characteristic frequency, amplitude and waveform, and the valve of hydraulic valve that described vibrating signal is added to
Rod controller, the vibrating signal waveform on solenoid in collection hydraulic valve, and by the first control signal in waveform and tremor
Waveform separate, by the control signal obtaining after separation feed back to signal input part and set be used for control valve rod of hydraulic valve displacement
Signal subtraction after generate the second control signal, will be defeated with vibrating signal for the average information of the second control signal obtaining after separation
Go out to carry out breakdown judge.
3. hydraulic valve adjustment method according to claim 2 is it is characterised in that described breakdown judge includes according to detecting
The average value information of control signal and the frequency of vibrating signal, peak-to-peak value, wave distortion, by Fuzzy multiple criteria decision-making method
Provide degree of membership to judge；According to judged result, determine controller output.
4. hydraulic valve adjustment method according to claim 3 is it is characterised in that determine in step S3 that valve rod working condition is
No normal, it is compared with pre-set threshold value including by the valve rod running parameter of measurement, when actual measurement running parameter is more than the first threshold values
Or during less than the second threshold values, determine that valve rod work is whether abnormal, and Exception Type is greater than the first threshold values or less than the
Two threshold values.
5. hydraulic valve adjustment method according to claim 4, it is characterised in that the pressure of collection valve rod, is pressed including utilizing
Force transducer gathers the pressure signal of oil-in, and is compared with the first threshold values and the second threshold values respectively.
6. hydraulic valve adjustment method according to claim 5 it is characterised in that in step S2 the valve rod of hydraulic valve pressure
At least one of power, flow, current parameters running parameter, generates braking characteristic curve during braking, determines correcting variable.
7. hydraulic valve adjustment method according to claim 6 is it is characterised in that in braking procedure, enter in several cycles
Row n times continue, in each cycle, using previous cycle parameter according to recurrence formula to predetermined braking characteristic curve
It is corrected.
8. hydraulic valve adjustment method according to claim 7 is it is characterised in that also include default necessity pressure, according to pressure
The pressure that force transducer collects increases time or pressure demand, produces the variable for correction, determines correction coefficient, should
Correction coefficient be added/is multiplied with predetermined braking characteristic curve, produces correction braking characteristic curve.
9. hydraulic valve adjustment method according to claim 8 is it is characterised in that described correction coefficient is expressed as：
Kn=1- (1-Kfil,n-1)*√T1/T2, wherein, n is the quantity of K, and T1 is total increase time/pressure that current pressure increases
Demand, T2 is to increase the time by the nominal pressure that desired pressure differential and nominal gradiometer calculate, and pressure differential is by previous pressure drop
Determine.
10. hydraulic valve adjustment method according to claim 9 is it is characterised in that after failure judgement type, provide follow-up work
Instruct, solve pattern including entering corresponding failure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062027.9A CN106438579B (en) | 2016-11-25 | 2016-11-25 | A kind of hydraulic valve adjustment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611062027.9A CN106438579B (en) | 2016-11-25 | 2016-11-25 | A kind of hydraulic valve adjustment method |
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| CN106438579A true CN106438579A (en) | 2017-02-22 |
| CN106438579B CN106438579B (en) | 2018-09-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108021737A (en) * | 2017-11-10 | 2018-05-11 | 武汉船用机械有限责任公司 | A kind of hydraulic valve piece emulation modelling method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02278137A (en) * | 1989-04-19 | 1990-11-14 | Kobe Steel Ltd | Method and apparatus for testing characteristic of hydraulic valve |
| CN101245871A (en) * | 2008-01-31 | 2008-08-20 | 浙江大学 | Digital positioner for electric controlled valve and method thereof |
| CN101598159A (en) * | 2009-06-19 | 2009-12-09 | 杨成刚 | Portable active hydraulic tester and test method |
| CN102606800A (en) * | 2012-03-31 | 2012-07-25 | 绍兴文理学院 | Detection restorative method of hydraulic valve jamming and chucking faults |
| CN102865271A (en) * | 2012-09-28 | 2013-01-09 | 天津鼎成高新技术产业有限公司 | Detection method and device of internal leakage of hydraulic valve |
| DE102012202326A1 (en) * | 2012-02-16 | 2013-08-22 | Jungheinrich Aktiengesellschaft | System for providing operation function of commercial vehicle such as forklift, has evaluation module that checks operation condition of hydraulic valve of commercial vehicle based on actual current value measured by measuring module |
| CN103410809A (en) * | 2013-08-01 | 2013-11-27 | 中冶赛迪工程技术股份有限公司 | System and method for testing hydraulic cylinder Stribeck model friction parameters |
-
2016
- 2016-11-25 CN CN201611062027.9A patent/CN106438579B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02278137A (en) * | 1989-04-19 | 1990-11-14 | Kobe Steel Ltd | Method and apparatus for testing characteristic of hydraulic valve |
| CN101245871A (en) * | 2008-01-31 | 2008-08-20 | 浙江大学 | Digital positioner for electric controlled valve and method thereof |
| CN101598159A (en) * | 2009-06-19 | 2009-12-09 | 杨成刚 | Portable active hydraulic tester and test method |
| DE102012202326A1 (en) * | 2012-02-16 | 2013-08-22 | Jungheinrich Aktiengesellschaft | System for providing operation function of commercial vehicle such as forklift, has evaluation module that checks operation condition of hydraulic valve of commercial vehicle based on actual current value measured by measuring module |
| CN102606800A (en) * | 2012-03-31 | 2012-07-25 | 绍兴文理学院 | Detection restorative method of hydraulic valve jamming and chucking faults |
| CN102865271A (en) * | 2012-09-28 | 2013-01-09 | 天津鼎成高新技术产业有限公司 | Detection method and device of internal leakage of hydraulic valve |
| CN103410809A (en) * | 2013-08-01 | 2013-11-27 | 中冶赛迪工程技术股份有限公司 | System and method for testing hydraulic cylinder Stribeck model friction parameters |
Non-Patent Citations (1)
| Title |
|---|
| 李伟波: "基于现场总线的智能阀及其信号提取与二线传输模式研究", 《中国博士学位论文全文数据库（信息科技辑）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108021737A (en) * | 2017-11-10 | 2018-05-11 | 武汉船用机械有限责任公司 | A kind of hydraulic valve piece emulation modelling method |
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| CN106438579B (en) | 2018-09-25 |
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