CN106194905A - A kind of method utilizing area concentration that Hydraulic Elements cleannes are controlled - Google Patents
A kind of method utilizing area concentration that Hydraulic Elements cleannes are controlled Download PDFInfo
- Publication number
- CN106194905A CN106194905A CN201610586316.2A CN201610586316A CN106194905A CN 106194905 A CN106194905 A CN 106194905A CN 201610586316 A CN201610586316 A CN 201610586316A CN 106194905 A CN106194905 A CN 106194905A
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- China
- Prior art keywords
- interval
- cleannes
- hydraulic elements
- particle size
- granule
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a kind of method utilizing area concentration that Hydraulic Elements cleannes are controlled, belong to hydraulic system field.Its operating procedure is as follows: contaminant particle size 1) is defined as the diameter dimension of the smallest sphere of energy envelope granule, according to particle size size, particle size is divided into some intervals；2) granule number in each interval range or in the range of specific interval is tested, after cleaning test Hydraulic Elements, the last actual granule number measuring residual in its surface, compares the largest particles number N in each interval range and actual granule number M two number；3) by same method to remaining each element degree of being cleaned requirement, the most qualified after, assemble.The contaminant particle number that each size is interval is controlled by the present invention, more conforms to the actual requirement of Hydraulic Elements cleanliness control, and range is wider, and more practical, the control for industry cleannes provides a kind of new thinking and method.
Description
Technical field
The invention belongs to the control method of a kind of Hydraulic Elements cleannes, specifically, particularly relate to one and utilize area
The method that Hydraulic Elements cleannes are controlled by concentration.
Background technology
Hydraulic components is the parts more sensitive to cleannes.It was found that obturating element is stitched by the granule about 5 μm
The harm of gap is maximum, and the most notable to the abrasive action of element more than the granule of 15 μm.In hydraulic system, contaminant particle
Size be directly connected to hydraulic components and the performance of hydraulic system and life-span.
Common traditional hydraulic part cleanliness control many employings following two control method:
One, use gravimetric method to control, i.e. require that in hydraulic components, the particle weight of residual controls within a certain range,
Such as a certain model banked direction control valves, it is desirable to dispatch from the factory qualified total member, its internal residual granule number gross weight controls within 69.4mg.
But this method cannot reflect the distribution of sizes of residual particles.Because various sizes of granule is to the performance of hydraulic part and aging effects
Different, therefore gravimetric method is in the cleanliness control of hydraulic part, has the biggest deficiency.
Two, take residual fluid and survey oil cleanliness, control hydraulic components by the cleannes controlling residual fluid
Cleannes.As, after a certain banked direction control valves delivery test, take part fluid from oil return opening, survey its cleannes according to NAS1638.
This method, can reflect the distribution of sizes of residual particles in parts to a certain extent, but major part hydraulic components is
Not having oil residues liquid, such as sebific duct, multipath valve rod etc., the most this method has significant limitation.
Along with proposition and the propelling of " made in China 2025 ", the common hydraulic part cleanliness control method of both the above is
The cleanliness control requirement of some high-end hydraulic part can not be met.For the control of Hydraulic Elements cleannes, it is badly in need of one more
Practical, more can meet the new control method of requirement.
Summary of the invention
It is an object of the invention to provide a kind of method utilizing area concentration that Hydraulic Elements cleannes are controlled, with gram
Take existing cleanliness control technology in Hydraulic Elements, use limited problem.
The present invention realizes by the following technical solutions: one utilizes area concentration to control Hydraulic Elements cleannes
The method of system, its operating procedure is as follows:
1) contaminant particle size is defined as the diameter dimension of the smallest sphere of energy envelope granule, big according to particle size
Little, particle size is divided into some intervals, it is intended that in Hydraulic Elements unit are, a certain particle size interval allows granule number
The upper limit or interval a, then calculate this element according to the gross area C of element and allow residual granule number N, N=C* from the teeth outwards
a；
2) testing the granule number in each interval range or in the range of specific interval, its method of testing is: cleans and surveys
After examination Hydraulic Elements, the then actual granule number M measuring residual in its surface, by granule number N and M in each interval range
Two numbers compare, and work as M > N, it was demonstrated that in this particle size interval, the cleannes of Hydraulic Elements are undesirable, all intervals
In the range of one requirement of granule number be unsatisfactory for, be i.e. considered defective, it should again clean, as M ＜ N, it was demonstrated that at this granule
In size interval, the cleannes of Hydraulic Elements meet the requirements, and can assemble after all interval is qualified；
3) by same method, remaining each Hydraulic Elements degree of being cleaned is tested, after each element cleannes are the most qualified, enter
Luggage is joined.
Particle size is divided into following 8 intervals: < 2 μm, 2～5 μm, 5～15 μm, 15～25 μm, 25～50 μm, 50
～100 μm, 100～300 μm, > 300 μm.
According to the difference of Hydraulic Elements working environment, such as normal work is the most exposed in atmospheric environment, or normal work
Often it is enclosed in the inside of higher level's assembly, and contacts with fluid, it is allowed to different elements, or the different portions of identity element
Position, formulates the size of different granule number binding occurrence N.
Compared with prior art, the invention has the beneficial effects as follows:
1) the contaminant particle number that each size is interval is controlled, more conforms to the reality of Hydraulic Elements cleanliness control
Requirement, overcomes gravimetric method and cannot embody the defect of pollutant size.As a example by main-control valve of excavating machine, if a certain size
Contaminant particle number in interval range exceeds standard, and rest interval endoparticle number is less, and possible pollutant gross weight controls closing
In the range of lattice, but the granule exceeded standard may cause main control valve to occur wear and tear aggravation, life-span step-down, even card valve in follow-up use
Deng dangerous phenomenon.By utilizing area concentration that the granule number in specific dimensions interval is retrained, completely eliminate hidden danger.
2) overcome common taking and remain fluid to control the limitation of this method of cleannes.With controlling in unit are
The contaminant particle number that element allows controls the cleannes of element, has been no longer required for residual fluid, and any element all can use,
Range is wider, more practical.
3) " output control " can be transferred to " process control ".As a example by high-end hydraulic part main-control valve of excavating machine, the most domestic
By the cleannes of the fluid of detection main control valve assembly oil return opening, outer major part producer judges whether these main control valve cleannes reach
Mark.The defect of the method is, if due to certain accidentalia during Zhuan Pei, causes result defective, and that element Plant is protected most
The way of danger is to be disassembled by assembly again, cleans, then assembles, then tests, measures, until cleannes are qualified.This makes efficiency
It is greatly lowered.The cleannes of each assembly element can be proposed cleannes requirement by the introducing of area concentration respectively, during assembling
Ensure that each parts cleannes are up to standard, thus after ensureing that assembling completes, the cleannes of assembly are qualified.And, the most program control
The generation of the phenomenons such as the bulky grain residual that system can be prevented effectively from each accidentalia during assembling and cause.
4) accelerating the emergence of domestic high-end hydraulic part manufacturer, tribute is made in the development for domestic project mechanical-hydraulic technology
Offer.The increasing put into along with basis and the technological accumulation exchanged with external valve producer, the most domestic high-end hydraulic part is raw
Product has been achieved with incremental advances.The control of cleannes is to hydraulic part, and the importance of the most high-end hydraulic part is self-evident, but clearly
The effectiveness of cleanliness control, practicality, always perplex the bottleneck of domestic manufacturer.The present invention can effectively solve high-end hydraulic part
Cleanliness control problem.
5) catalyst of whole machinery industry cleanliness control skill upgrading.Along with client's longevity to all kinds of engineering goods
The highest requirements such as life, comfortableness, noise, industry has also put into increasing concern to the control of cleannes.Area
The application of concentration, the control for industry cleannes provides a kind of new thinking and method.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated:
A kind of method utilizing area concentration that Hydraulic Elements cleannes are controlled, operating procedure is as follows:
1) contaminant particle size is defined as the diameter dimension of the smallest sphere of energy envelope granule, big according to particle size
Little, particle size is divided into following 8 intervals: < 2 μm, 2～5 μm, 5～15 μm, 15～25 μm, 25～50 μm, 50～100 μ
M, 100～300 μm, > 300 μm；
In specifying Hydraulic Elements unit are, a certain particle size interval allows the upper limit of granule number or interval a, according to unit
The difference of part working environment, such as normal work is the most exposed in atmospheric environment, or normal work to be often enclosed in higher level total
The inside become, and contact with fluid, it is allowed to different elements, or the different parts of identity element, formulate different granules
The size of number binding occurrence N.In main control valve cleanliness control, the surface area of a certain valve rod is 200cm2, chi each to unit are
The granule number of very little section requires such as table 1:
The largest particles number in each size range of table 1
Then calculate this element according to the gross area C of Hydraulic Elements and allow residual granule number N, N=C*a from the teeth outwards.
The largest particles number in table 2 gross area
2) testing the granule number in each interval range or in the range of specific interval, its method of testing is: cleans and surveys
After examination Hydraulic Elements, the last actual granule number M measuring residual in its surface, by granule number N and M in each interval range
Two number compare, as M > N time, it was demonstrated that in this particle size interval, the cleannes of Hydraulic Elements are undesirable, all districts
One requirement of granule number in the range of between is unsatisfactory for, and is i.e. considered defective, it should again clean；As M ＜ N, it was demonstrated that at this
In particle size interval, the cleannes of Hydraulic Elements meet the requirements, and can assemble after all interval is qualified.
3) by same method, remaining each Hydraulic Elements degree of being cleaned is tested, after each element cleannes are the most qualified, enter
Luggage is joined.
Claims (3)
1. one kind utilizes the method that Hydraulic Elements cleannes are controlled by area concentration, it is characterised in that: its operating procedure is such as
Under:
1) contaminant particle size is defined as the diameter dimension of the smallest sphere of energy envelope granule, according to particle size size,
Particle size is divided into some intervals, it is intended that in Hydraulic Elements unit are, a certain particle size interval allows the upper of granule number
Limit or interval a, then calculate this element according to the gross area C of element and allow residual granule number N, N=C*a from the teeth outwards；
2) testing the granule number in each interval range or in the range of specific interval, its method of testing is: clean test fluid
After pressure element, the then actual granule number M measuring residual in its surface, by granule number N Yu M two number in each interval range
Compare, work as M N, it was demonstrated that in this particle size interval, the cleannes of Hydraulic Elements are undesirable, all interval ranges
Interior one requirement of granule number is unsatisfactory for, and is i.e. considered defective, it should again clean；As M ＜ N, it was demonstrated that in this particle size
In interval, the cleannes of Hydraulic Elements meet the requirements, and can assemble after all interval is qualified；
3) by same method, remaining each Hydraulic Elements degree of being cleaned is tested, after each element cleannes are the most qualified, fill
Join.
The method utilizing area concentration to be controlled Hydraulic Elements cleannes the most according to claim 1, its feature exists
In: particle size is divided into following 8 intervals: < 2 μm, 2～5 μm, 5～15 μm, 15～25 μm, 25～50 μm, 50～100 μ
M, 100～300 μm, > 300 μm.
The method utilizing area concentration that Hydraulic Elements cleannes are controlled the most according to claim 1 and 2, its feature
Being: according to the difference of Hydraulic Elements working environment, such as normal work is the most exposed in atmospheric environment, or when normally working
Often it is enclosed in the inside of higher level's assembly, and contacts with fluid, it is allowed to different elements, or the different parts of identity element,
Formulate the size of different granule number binding occurrence N.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610586316.2A CN106194905B (en) | 2016-07-22 | 2016-07-22 | A kind of method that utilization area concentration is controlled to Hydraulic Elements cleannes |
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|---|---|---|---|
| CN201610586316.2A CN106194905B (en) | 2016-07-22 | 2016-07-22 | A kind of method that utilization area concentration is controlled to Hydraulic Elements cleannes |
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| CN106194905A true CN106194905A (en) | 2016-12-07 |
| CN106194905B CN106194905B (en) | 2017-11-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361288A (en) * | 2019-07-12 | 2019-10-22 | 中国航发沈阳发动机研究所 | A kind of aircraft engine parts surface cleanness degree determination method and system |
| CN116557386A (en) * | 2023-02-08 | 2023-08-08 | 辽宁金麟表面技术有限公司 | Technical method for controlling corrosion and pollution of hydraulic medium of high-temperature flame-retardant hydraulic system |
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| US20120111117A1 (en) * | 2009-05-11 | 2012-05-10 | The University Of Western Ontario | Ultrasonic method of monitoring particle size distribution of a medium |
| CN103357621A (en) * | 2013-07-12 | 2013-10-23 | 江苏大学 | Method and device of cleaning microparticles on surface of metal workpiece with laser shock waves |
| CN104511451A (en) * | 2013-09-26 | 2015-04-15 | 沈阳鼓风机集团核电泵业有限公司 | Method for controlling cleaness of supplies in the manufacturing process of reactor coolant pumps and detection method thereof |
| CN105508332A (en) * | 2014-09-26 | 2016-04-20 | 中国航空工业第六一八研究所 | Assembly technical method of mode selecting valve based on interference fit seal |
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2016
- 2016-07-22 CN CN201610586316.2A patent/CN106194905B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120111117A1 (en) * | 2009-05-11 | 2012-05-10 | The University Of Western Ontario | Ultrasonic method of monitoring particle size distribution of a medium |
| CN103357621A (en) * | 2013-07-12 | 2013-10-23 | 江苏大学 | Method and device of cleaning microparticles on surface of metal workpiece with laser shock waves |
| CN104511451A (en) * | 2013-09-26 | 2015-04-15 | 沈阳鼓风机集团核电泵业有限公司 | Method for controlling cleaness of supplies in the manufacturing process of reactor coolant pumps and detection method thereof |
| CN105508332A (en) * | 2014-09-26 | 2016-04-20 | 中国航空工业第六一八研究所 | Assembly technical method of mode selecting valve based on interference fit seal |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361288A (en) * | 2019-07-12 | 2019-10-22 | 中国航发沈阳发动机研究所 | A kind of aircraft engine parts surface cleanness degree determination method and system |
| CN110361288B (en) * | 2019-07-12 | 2022-07-15 | 中国航发沈阳发动机研究所 | Method and system for judging surface cleanliness of aero-engine part |
| CN116557386A (en) * | 2023-02-08 | 2023-08-08 | 辽宁金麟表面技术有限公司 | Technical method for controlling corrosion and pollution of hydraulic medium of high-temperature flame-retardant hydraulic system |
| CN116557386B (en) * | 2023-02-08 | 2023-11-14 | 辽宁金麟表面技术有限公司 | Technical method for controlling corrosion and pollution of hydraulic medium of high-temperature flame-retardant hydraulic system |
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| CN106194905B (en) | 2017-11-07 |
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Denomination of invention: A method for controlling the cleanliness of hydraulic components by using area concentration Effective date of registration: 20211217 Granted publication date: 20171107 Pledgee: Industrial and Commercial Bank of China Limited Linyi Economic Development Zone sub branch Pledgor: SHANDONG LINGONG CONSTRUCTION MACHINERY Co.,Ltd. Registration number: Y2021980015222 |