CN103743793A - Online detection device for hydraulic pipeline washing oil for ship - Google Patents
Online detection device for hydraulic pipeline washing oil for ship Download PDFInfo
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- CN103743793A CN103743793A CN201310749429.6A CN201310749429A CN103743793A CN 103743793 A CN103743793 A CN 103743793A CN 201310749429 A CN201310749429 A CN 201310749429A CN 103743793 A CN103743793 A CN 103743793A
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Abstract
The invention relates to an online detection device for a hydraulic pipeline washing oil for a ship. According to the innovative points, the online detection device is mounted on a main oil path of a ship pipeline and is located in front of an entrance of a pipeline washing pump station; the online detection device comprises an online sampling assembly, a capacitive sensor module, a photoelectric sensor module and a signal processing system, wherein the online sampling assembly comprises a pair of check valves mounted on the main oil path and a sampling pipe arranged between the liquid outlet sides of the two check valves; the capacitive sensor module is used for detecting the water content; the photoelectric sensor module is used for detecting solid impurities; output signals of a capacitance detection circuit and a photoelectric detection circuit are connected into the signal processing system. The online detection device has the advantages that dielectric constants of various impurities in the washing oil are measured by the capacitive sensor module and the photoelectric sensor module; the cleanliness of the washing oil is calibrated by the processing of the signal processing system so as to judge a washing effect and feed the effect back to workers in time; the use amount of the washing oil is reduced and the washing period is shortened.
Description
Technical field
The present invention relates to a kind of ship hydraulic pipeline-cleaning oil sample acquisitions device, particularly a kind of ship hydraulic pipeline-cleaning oil on-line measuring device.
Background technology
The shipping industry of China is too paid attention to shipbuilding always, and ignores research and development and the manufacture of marine equipment facility, because the deficiency of auxiliary facility research and development has limited China's shipping industry development.The value of marine equipment product accounts for 2/3rds of boats and ships total value, has very important effect in shipping industry, and the international competitiveness of the supporting industry of ship-lifting is to make the necessary condition of world shipbuilding power.
As everyone knows, combustion, lubricating oil and hydraulic plumbing system are necessary before going on board and installing to be cleaned through throwing oil, and throwing oil, cleaning are directly connected to whole system reliability of operation from now on, so user requires more and more higher to the cleanliness of hydraulic oil piping.At present, in domestic boats and ships production, the pipeline of oil pipe and hydraulic system adopts Integral cleaning, but because the cleanliness of hydraulic oil grade of cleaning cannot detect online, the hydraulic oil sample of cleaning need to be delivered to coherent detection department and detect cleanliness, detect qualified rear equipment and just can be delivered for use.
Detection department measures impurity wherein for the censorship sample that detects shipbuilding enterprise mainly with the method for physics, chemistry.Utilize microscope to observe, detect size, quantity and the distribution of the contaminant particle in submitted sample, thereby quantitatively detect particle and the class of pollution in submitted sample.And according to national standard NAS1638 and ISO4406, compare and determine whether ship pipeline cleans up.Sense cycle is long, in censorship during this period of time, need to proceed to clean, and cannot in situation up to standard, stop timely cleaning, causes the waste of hydraulic oil, in addition, also causes the prolongation of the delivery cycle in shipyard.Therefore, if can online the cleanliness of ship hydraulic pipeline-cleaning oil be detected, will greatly reduce the waste of hydraulic oil, accelerate the delivery cycle, improve the market competitiveness.
Researchist has proposed some thinkings to the online detection of impurities in liquid both at home and abroad:
(1) china national practical new-type patent [CN202330282U] has proposed a kind of impurity-content tester for photoelectric liquid, it measures the impurity content in liquid by the ultraviolet light beam forming between ultraviolet emission head and ultraviolet Receiver, test solution impurity is more, the ultraviolet light being blocked is more, otherwise fewer, but ultraviolet emission head and Receiver are not easy to be arranged in detergent line, and in fluid, contain plurality of impurities, the absorption difference of various impurity to ultraviolet light, it is very low to the poor compound sensitivity of uv absorption.
(2) liquid impurity based on video detects gordian technique research [Wang Zhiguo Master's thesis], and this piece of paper completed building of imaging system, has provided software systems and has checked framework; Analyzed liquid image feature, realized liquid regions and cut apart and locate; Various method for testing motion have been compared in analysis, according to the feature of liquid sequence image, proposed a kind of based on the poor target extraction algorithm of continuous three two field picture frames, this algorithm has the advantages that real-time is good, verification and measurement ratio is high, but considers actual working environment and technical indicator, and the method has higher requirement to video camera, image pick-up card, light intensity is larger on result impact, working environment is had relatively high expectations, and the data obtained is stable not, can not meet factory's actual demand.
(3) [stone strengthens in the application of photoelectric sensor in hydraulic oil impurity detects, thank and build modern electronic technology 2004 27(12)] literary composition proposes to inject in the hydraulic pressure oil sample that contains impurity when light, because scattering and absorption cause transmitted light weak, detect the transmission light quantity after decay, according to transmission light quantity, determine the content of impurity, but it has only proposed this kind of mode, do not relate to the effective technology scheme that ship pipeline cleans that is more suitable for, and can not detect the content of water outlet, in the use of ship domain, have its defect.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of ship hydraulic pipeline-cleaning oil on-line measuring device that can realize to cleanliness of hydraulic oil grade in purging system online Semi-qualitative, Quasi-quantitative measurement, so that for ship hydraulic pipeline cleaning system provides cleaning keying signal, and detect accurately, reliably.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of ship hydraulic pipeline-cleaning oil on-line measuring device, and its innovative point is: described on-line measuring device is arranged on the working connection of ship pipeline, and is positioned at before the entrance of pipeline-cleaning pumping plant; It comprises an online sampling assemble, comprises a pair of stop valve being arranged on working connection, and is arranged on the sampling pipe between two stop valve tapping sides; Sampling pipe is comprised of swivel joint connecting hose transparent hard tube two ends, and the other end of flexible pipe is fixed and is communicated with the tapping side of stop valve; One capacitive sensor modules for detection of moisture, adopts a capacitive detection circuit, and this capacitive detection circuit has a pair of pole plate, and this inserts pole plate in the transparent hard tube of sampling pipe; The one photoelectric sensor module for detection of solid impurity, comprises transmitter, receiver and photoelectric detective circuit, and transmitter and receiver are arranged on respectively the both sides of the transparent hard tube of sampling pipe, receiver access photoelectric detective circuit; One signal processing system, the output signal of capacitive detection circuit and photoelectric detective circuit accesses this signal processing system.
Preferably, described on-line measuring device also comprises the contrast sampling assemble that a road is identical with online sampling assemble structure, and this contrast sampling assemble is arranged on before the entrance of pipeline-cleaning pumping plant; Outfit and capacitive sensor modules, contrast capacitive sensor modules and contrast photoelectric sensor module that photoelectric sensor module is identical on this contrast sampling assemble, the output signal of this contrast capacitive sensor modules and contrast photoelectric sensor module accesses signal processing system equally.
The invention has the advantages that:
By capacitive sensor modules, photoelectric sensor module, the specific inductive capacity of the various impurity in wash oil (as welding slag, metal oxide, moisture etc.) is measured, by electric capacity, photoelectric detective circuit by the non-electrical quantities recording by transforming into electrical quantities, by the processing of signal processing system, the cleanliness of wash oil are demarcated.
Photoelectric sensor is for the detection of the impurity such as iron filings, oxide, it is arranged in pipeline, light emitting diode is as incident light source, light is transmitted on sensor through fluid, capacitive transducer is for the detection of moisture, it is arranged in pipeline fluid, and the signal obtaining is sent into signal processing system below; Adopt AT89C2051 single-chip microcomputer, it adds with peripheral interface circuit MAX1109 type A/D converter and serial port the display circuit composition signal processing system that peripheral chip 74LS164 forms.
The present invention can be immediately or periodic monitor to oil residue content, and the wash oil detecting and unpolluted wash oil standard specimen are contrasted, so that judgement cleaning performance, and can feed back to timely staff, reduced and cleaned with oily consumption, and shortened the cleaning frequency, and then more reasonably arrange the engineering time, work efficiency is provided.
Sampling pipe is comprised of swivel joint connecting hose transparent hard tube two ends, after completing, detection transparent hard tube and capacitive sensor modules, photoelectric sensor module can be disassembled, reusable and oil circuit is not caused to damage, meanwhile, avoid the pole plate of capacitive sensor modules to be caused detection mistake by contaminating impurity.
Accompanying drawing explanation
Fig. 1 is ship hydraulic pipeline-cleaning oil on-line measuring device structural representation of the present invention.
Fig. 2 is capacitive sensor modules schematic diagram in the present invention.
Fig. 3 is photoelectric sensor module principle figure in the present invention.
Fig. 4 is signal processing system schematic diagram in the present invention.
Embodiment
As shown in Figure 1, in the present invention, ship hydraulic pipeline-cleaning oil on-line measuring device carries out the cleaning of ship pipeline for coordinating ship pipeline to clean pumping plant.Wherein, on-line measuring device is arranged on the working connection 1 of ship pipeline, and is positioned at before the entrance of pipeline-cleaning pumping plant.
It comprises online sampling assemble, capacitive sensor modules, photoelectric sensor module and signal processing system.
One online sampling assemble, comprises a pair of stop valve 3 being arranged on working connection 1, and is arranged on the sampling pipe between two stop valve 3 tapping sides; Sampling pipe is comprised of swivel joint 5 connecting hoses 6 transparent hard tube 4 two ends, and the other end of flexible pipe 6 is fixed and is communicated with the tapping side of stop valve 3.
By the stop valve 3 of opening sampling pipe two ends, the hydraulic oil in working connection 1 is imported in sampling pipe, while not needing to measure, close two ends stop valve 3, utilize swivel joint 5 to dismantle the transparent hard tube 4 in down-sampling pipe, avoid it to pollute the detection probe of capacitive sensor modules, photoelectric sensor module.
One capacitive sensor modules for detection of moisture, adopts a capacitive detection circuit 7, and this capacitive detection circuit has a pair of pole plate 8, and this inserts in the transparent hard tube 4 of sampling pipe pole plate 8.Pole plate 8 is inserting transparent hard tube 4 when interior, and only end sections extend into the middle part of transparent hard tube 4, makes the region that hydraulic oil liquid by sampling pipe can be through two pole plates.And then utilize capacitive detection circuit by the non-electrical quantities recording by transforming into electrical quantities.
Capacitive transducer is placed in to sampling pipe, thinks in the process that the fluid in pipeline cleaning always, so the node constant of fluid is changing always.The real-time specific inductive capacity of the fluid that can be surveyed by MBM capacitance detecting device.The principle of capacitive transducer checked for impurities is for utilizing MBM metering circuit accurately to measure electric capacity, and K switch is controlled by CPU, makes detected element successively connect with two known fixed impedances, then two-sided measurement during measurement
with
between phase differential-phase angle
.
In formula:
for
with
between phase declinate; X is the imaginary part of the resulting impedance of sitting around a fire; R is the real part of the resulting impedance of sitting around a fire.Standard specimen oil is injected to standard specimen fuel tank simultaneously and utilize capacitive transducer to detect, utilize identical method to record standard specimen oil.
The one photoelectric sensor module for detection of solid impurity, comprises transmitter 9, receiver 10 and photoelectric detective circuit 11, and transmitter 9 and receiver 10 are arranged on respectively the both sides of the transparent hard tube 4 of sampling pipe, and receiver 10 accesses photoelectric detective circuit 11.
The transmitter of photoelectric sensor module is injected the fluid in transparent hard tube by light, and the phototriode of opposite side is collected the light signal through sampling pipe as receiver, and converts thereof into electric signal analysis.
Transmitter adopts LED as incident light light source, and receiver is selected 3DUl2 type silicon phototriode;
The light that LED sends is transmitted to the PDn of receiver through fluid, PDf is upper, and transmitted light is transformed into current signal, and this current signal converts voltage signal V to through the accurate sample resistance R2 of 5k Ω
1, send into A/D converter, convert to and send into signal processing system after digital signal and carry out data processing, data bus is connected with single-chip microcomputer, data transmission to computing machine.
Specific as follows: I
n=I
0* s*exp (k*l
n* s), I
f=I
0* s*exp (k*l
f* s), wherein, the coefficient that k forms for impurity color, l
nand l
fthe coefficient that light forms to the distance of PDn, PDf, the concentration that s is impurity;
I=I
n 2/ I
f=I
0* s*exp ﹛ k* (l
f-2l
n) * s ﹜, if adjust light to PDn, the distance of PDf makes l
f-2l
n=0, i=I
n 2/ I
f=I
0* s, can obtain the concentration of impurity.
Therefore when photoelectric sensor module is installed, control transmitter of the present invention to receiver PDn, the distance of PDf makes l
f=2l
n.
One signal processing system 12, capacitive detection circuit 7 accesses this signal processing system 12 with the output signal of photoelectric detective circuit 11.It adopts AT89C2051 single-chip microcomputer, and it adds peripheral chip 74LS164 with peripheral interface circuit MAX1109 type A/D converter and serial port and forms.
As the present invention's embodiment more specifically: on-line measuring device also comprises the contrast sampling assemble that a road is identical with online sampling assemble structure, and this contrast sampling assemble is arranged on before the entrance of pipeline-cleaning pumping plant; Outfit and capacitive sensor modules, contrast capacitive sensor modules and contrast photoelectric sensor module that photoelectric sensor module is identical on this contrast sampling assemble, the output signal of this contrast capacitive sensor modules and contrast photoelectric sensor module accesses signal processing system equally.
During use, ship hydraulic pipeline-cleaning oil on-line measuring device, on the working connection 1 of ship pipeline, and is positioned at before the entrance of pipeline-cleaning pumping plant; Open a pair of stop valve 3, by sampling pipe and working connection 1 conducting, when wash oil is passed through sampling pipe, by photoelectric sensor and test using capacitance sensor electric signal, send into signal conditioning circuit, the data of modulate circuit are sent into data collecting card, by the laggard row data processing of A/D module converts, the demonstration of signal processing system 12.
On-line measuring device also comprises the contrast sampling assemble that a road is identical with online sampling assemble structure, this contrast sampling assemble can carry out sample detecting to same sample, to find sampling assemble and the data variance that contrasts sampling assemble, remind these data of staff whether to have wrong possibility, improve accuracy.
Claims (2)
1. a ship hydraulic pipeline-cleaning oil on-line measuring device, is characterized in that: described on-line measuring device is arranged on the working connection of ship pipeline, and is positioned at before the entrance of pipeline-cleaning pumping plant; It comprises
One online sampling assemble, comprises a pair of stop valve being arranged on working connection, and is arranged on the sampling pipe between two stop valve tapping sides; Sampling pipe is comprised of swivel joint connecting hose transparent hard tube two ends, and the other end of flexible pipe is fixed and is communicated with the tapping side of stop valve;
One capacitive sensor modules for detection of moisture, adopts a capacitive detection circuit, and this capacitive detection circuit has a pair of pole plate, and this inserts pole plate in the transparent hard tube of sampling pipe;
The one photoelectric sensor module for detection of solid impurity, comprises transmitter, receiver and photoelectric detective circuit, and transmitter and receiver are arranged on respectively the both sides of the transparent hard tube of sampling pipe, receiver access photoelectric detective circuit;
One signal processing system, the output signal of capacitive detection circuit and photoelectric detective circuit accesses this signal processing system.
2. ship hydraulic pipeline-cleaning oil on-line measuring device according to claim 1, it is characterized in that: described on-line measuring device also comprises the contrast sampling assemble that a road is identical with online sampling assemble structure, and this contrast sampling assemble is arranged on before the entrance of pipeline-cleaning pumping plant;
Outfit and capacitive sensor modules, contrast capacitive sensor modules and contrast photoelectric sensor module that photoelectric sensor module is identical on this contrast sampling assemble, the output signal of this contrast capacitive sensor modules and contrast photoelectric sensor module accesses signal processing system equally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310749429.6A CN103743793A (en) | 2013-12-31 | 2013-12-31 | Online detection device for hydraulic pipeline washing oil for ship |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749429.6A CN103743793A (en) | 2013-12-31 | 2013-12-31 | Online detection device for hydraulic pipeline washing oil for ship |
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| CN201310749429.6A Pending CN103743793A (en) | 2013-12-31 | 2013-12-31 | Online detection device for hydraulic pipeline washing oil for ship |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758900A (en) * | 2014-12-17 | 2016-07-13 | 中国石油天然气股份有限公司 | Crude oil pipeline water analyzer |
| CN108931394A (en) * | 2018-05-17 | 2018-12-04 | 南通市飞宇石油科技开发有限公司 | A kind of rock core oil washing instrument that can be sampled detection automatically |
| CN109580518A (en) * | 2019-01-31 | 2019-04-05 | 江西炼石环保科技有限公司 | A kind of greasy dirt cleaning solution saturation degree monitoring device |
| CN109682829A (en) * | 2019-02-27 | 2019-04-26 | 三一汽车制造有限公司 | Oil cleanliness detection device, hydraulic machinery and oil cleanliness detection method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758900A (en) * | 2014-12-17 | 2016-07-13 | 中国石油天然气股份有限公司 | Crude oil pipeline water analyzer |
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| CN108931394A (en) * | 2018-05-17 | 2018-12-04 | 南通市飞宇石油科技开发有限公司 | A kind of rock core oil washing instrument that can be sampled detection automatically |
| CN109580518A (en) * | 2019-01-31 | 2019-04-05 | 江西炼石环保科技有限公司 | A kind of greasy dirt cleaning solution saturation degree monitoring device |
| CN109682829A (en) * | 2019-02-27 | 2019-04-26 | 三一汽车制造有限公司 | Oil cleanliness detection device, hydraulic machinery and oil cleanliness detection method |
| WO2020173028A1 (en) * | 2019-02-27 | 2020-09-03 | 三一汽车制造有限公司 | Oil cleanliness testing device, hydraulic machinery, and oil cleanliness testing method |
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Application publication date: 20140423 |
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