CN107063927A - Optical fiber oil product kinematic viscosity determines device - Google Patents
Optical fiber oil product kinematic viscosity determines device Download PDFInfo
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- CN107063927A CN107063927A CN201710281229.0A CN201710281229A CN107063927A CN 107063927 A CN107063927 A CN 107063927A CN 201710281229 A CN201710281229 A CN 201710281229A CN 107063927 A CN107063927 A CN 107063927A
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- optical fiber
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 148
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 210000005239 tubule Anatomy 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000037361 pathway Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
- G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
- G01N11/06—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by timing the outflow of a known quantity
Abstract
Device, including capillary viscometer, the first optical fiber tube group, the second optical fiber tube group, light source and photodetection and processing unit are determined the invention discloses a kind of optical fiber oil product kinematic viscosity；Wherein, first optical fiber tube group and the second optical fiber tube group include two symmetrically arranged two L-shaped optical fiber tubes, by will form the transmission of optical signal at two test point graticules being against on capillary viscometer of transverse tube pipe end per symmetrically arranged two L-shaped optical fiber tubes respectively and receive medium, the rapid interval time for inerrably detecting fast-changing liquid level, the stability and the degree of accuracy for making measurement are not disturbed by temperature fluctuation, the measure device continues to use the capillary viscometer and corresponding measurement request and measuring method of national regulations simultaneously, meet the requirement that laboratory is accurately tested the full-automatic kinematic viscosity of oil sample.
Description
Technical field
The present invention relates to oil field development experimental assembly technical field, more particularly to a kind of optical fiber oil product kinematic viscosity is surveyed
Determine device.
Background technology
With successively decreasing year by year for Some Domestic field output, equipment wearing aggravation is changed by the cycle to oil product
What is become is particularly important, and viscosity is to evaluate whether oil property can meet right in one of important indicator of need of work, national standard
There are many introductions in the measuring method of viscosity.Wherein, capillary tube method is produced because its is simple to operate, the degree of accuracy is high by vast oil
The favor of product reviewer, it is often more important that it is still that metrological service can demarcate unique instrument of normal viscosity at present.At present
The viscosity measurement of national regulations is to use manual viscosity determinator, but its complex operation, and labor intensity is big, and system is missed
It is poor big；There is " temperature drift " phenomenon, serious restriction and shadow in oil sample viscosity measurement of the measurement module of conditional electronic class in constant temperature bath
Ring the accuracy of measurement result；And similar foreign products are expensive, maintenance cost is high.
The content of the invention
Meeting national standard it is an object of the invention to provide one kind being capable of limnograph oil sample viscosity and not by temperature change
The optical fiber oil product kinematic viscosity of influence determines device.
Therefore, technical solution of the present invention is as follows：
A kind of optical fiber oil product kinematic viscosity determines device, including capillary viscometer, the first optical fiber tube group, the second light
Fine pipe group, light source and photodetection and processing unit；Wherein,
First optical fiber tube group includes two L-shaped optical fiber tubes, and two L-shaped optical fiber tubes are symmetricly set on capillary viscometer two
Side, and make that the transverse tube of two L-shaped optical fiber tubes is located in same horizontal line and transverse tube pipe end is against the capillary of capillary viscometer
On the wall of offside side；
Second optical fiber tube group also includes two L-shaped optical fiber tubes, and two L-shaped optical fiber tubes are symmetricly set on capillary viscometer two
Side, and make that the transverse tube of two L-shaped optical fiber tubes is located in same horizontal line and transverse tube pipe end is against the capillary of capillary viscometer
On the wall of offside side, and the transverse tube of two L-shaped optical fiber tubes of the second optical fiber tube group is disposed on two L-shaped of the first optical fiber tube group
Below the transverse tube of optical fiber tube；
Each L-shaped optical fiber tube of first optical fiber tube group and the second optical fiber tube group is neighbouring to be set, and is positioned adjacent to light source
Above the vertical tube pipe end of the two L-shaped optical fiber tubes set, the flashlight that light source is sent is set to enter L-shaped optical fiber tube by Space Coupling
Fibre bundle in carry out optical transport；
Photodetection and processing unit are arranged far from above the vertical tube pipe end of two L-shaped optical fiber tubes of light source, and it includes
First photodetector, the second photodetector, signal processor, timer and the display screen being connected with timer；Described
L-shaped optical fiber tube of one photodetector respectively with timer and the first optical fiber tube group of lower section is connected；Second photodetector point
L-shaped optical fiber tube not with timer and the second optical fiber tube group of lower section is connected.
Further, light source is LED/light source；L-shaped optical fiber tube is by internal diameter 3mm L-shaped steel pipe and filling and full of in steel pipe
The multi beam multimode fibre in side space is constituted.
Further, the transverse tube of two L-shaped optical fiber tubes of the second optical fiber tube group and the L-shaped optical fiber tube of the first optical fiber tube group
Perpendicular separation distance between transverse tube is 35 ± 2mm.
Further, one L-shaped glass protection pipe is housed in every L-shaped optical fiber tube outer layer jacket.
Compared with prior art, the optical fiber oil product kinematic viscosity assay device structures are simple, and cost is low, and measurement is easy
Fast, data are accurately and reliably；Specifically, the capillary viscometer and corresponding measurement request of the measure device national regulations and
Measuring method；Medium is transmitted and received simultaneously as signal using multi beam optical fiber, can inerrably be detected rapidly quick
The interval time of the liquid level of change, the stability and the degree of accuracy for making measurement is not disturbed by temperature fluctuation, meets laboratory to oil
The requirement that the full-automatic kinematic viscosity of sample is accurately tested, has higher commercial value in terms of the measurement of oil kinematic viscosity at home.
Brief description of the drawings
Fig. 1 determines the positive structure schematic of device for the optical fiber oil product kinematic viscosity of the present invention；
Fig. 2 determines the side structure schematic diagram of device for the optical fiber oil product kinematic viscosity of the present invention；
Fig. 3 determines the structural representation of the capillary viscometer of device for the optical fiber oil product kinematic viscosity of the present invention；
Fig. 4 determines the capillary viscometer of device, the second optical fiber tube group for the optical fiber oil product kinematic viscosity of the present invention
And second set-up mode between optical fiber tube group structural representation.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described further, but following embodiments are absolutely not to this hair
It is bright to have any limitation.
As shown in figure 1, the capillary that the optical fiber oil product kinematic viscosity, which determines device, to be included being arranged on main frame 6 glues
The 1, first optical fiber tube group 2 of degree meter, the second optical fiber tube group 3, light source 4 and photodetection and processing unit 5；Specifically：
As shown in Fig. 1~2, main frame includes montant 601, the first level plate 602 for being fixed on the top of montant 601 and fixed
The second level board 603 in the bottom of montant 601, two upper and lower spaced first light guides are further fixed at the middle part of montant 601
The optical fibre tube fixed plate 605 of fibre pipe fixed plate 604 and second；Specifically, the first optical fibre tube fixed plate 604 and second
Perpendicular separation distance between optical fibre tube fixed plate 605 is 35mm；First optical fibre tube fixed plate 604 and the second light guide
Two inserting grooves being located on same axis are offered in fibre pipe fixed plate 605, make the He of the first optical fibre tube fixed plate 604
Second optical fibre tube fixed plate 605 is arranged on the capillary side of capillary viscometer 1；
As shown in figure 3, capillary viscometer 1 is standard GB/T/T265-88《Oil product kinematic viscosity determination method and
Dynamic viscosity calculating method》Specified in U-shaped capillary viscometer, its concrete structure include by the first pipe shaft 101, capillary 104
With the second pipe shaft 106, top-down processing has the first enlarged portion 102 and second to expand between the first pipe shaft 101 and capillary 104
Portion 103 is opened, the downside of the second pipe shaft 106 is machined with the 3rd enlarged portion 105；On the side wall close to the port of the second pipe shaft 106
A connecting branch is machined with, for connecting air extractor；Specifically, the internal diameter of the first pipe shaft 101 is 4mm；Second pipe shaft 106
Internal diameter is 10mm；And depending on species of the internal diameter of capillary 104 according to oil sample to be tested；For example, when oil sample to be tested is diesel oil,
The internal diameter of capillary 104 is processed as 0.8mm, and 200s is no less than in the flowing time of timing section to meet oil sample to be tested；
Wherein, the first optical fibre tube fixed plate 604 is horizontally disposed and is fixed on the first enlarged portion 102 and the second enlarged portion
103 junction, the second optical fibre tube fixed plate 605 is horizontally disposed and is fixed on the second enlarged portion 103 and capillary 104
Junction；Second pipe shaft 106 is fixed on the second level board 603；
As shown in figs. 34, the first optical fiber tube group 2 includes two L-shaped optical fiber tubes 201,202, and two L-shaped optical fiber tubes are symmetrical
Be arranged on the both sides of capillary viscometer 1, and make the transverse tube of two L-shaped optical fiber tubes be located in same horizontal line and transverse tube pipe end end
Face is against on the capillary offside side wall of capillary viscometer 1；
Correspondingly, to make two L-shaped optical fiber tubes 201,202 of the first optical fiber tube group 2 and the capillary of capillary viscometer 1
104 set location is fixed, and radially offering two from the two sides of the first optical fibre tube fixed plate 604 is located at same water
Jack on horizontal line, and two jacks with plate axially extending bore be interconnected, make the horizontal stroke of two L-shaped optical fiber tubes 201,202
Pipe is inserted into jack and end face is contacted with the capillary 104 of capillary viscometer 1；Two L-shaped optical fiber tubes 201,202 take the shape of the letter U,
The light-path for first connection of formation of capillary 104 that clear glass between is made；
As shown in figs. 34, the second optical fiber tube group 3 also includes two L-shaped optical fiber tubes, and two L-shaped optical fiber tubes are symmetricly set on
The both sides of capillary viscometer 1, and make that the transverse tube of two L-shaped optical fiber tubes is located in same horizontal line and the pipe end end face of transverse tube is against
On the capillary offside side wall of capillary viscometer 1, and the transverse tube of two L-shaped optical fiber tubes of the second optical fiber tube group 3 is arranged at intervals
Below the transverse tube of two L-shaped optical fiber tubes of the first optical fiber tube group 2；
Correspondingly, to make two L-shaped optical fiber tubes 301,302 of the second optical fiber tube group 3 and the capillary of capillary viscometer 1
104 set locations are fixed, and radially offering two from the two sides of the second optical fibre tube fixed plate 605 is located at same level
Jack on line, two jacks are equally interconnected with the axially extending bore on plate, and the transverse tube of two L-shaped optical fiber tubes 301,302 is inserted
In jack and end face is contacted with the capillary 104 of capillary viscometer 1, two L-shaped optical fiber tubes 301,302 is taken the shape of the letter U, lead to
The light-path of the formation Article 2 connection of clear glass vertical tube 101 between crossing；
Wherein, the vertical tube length of two L-shaped optical fiber tubes 201,202 of the second optical fiber tube group 3 is more than the first optical fiber tube group 2
The vertical tube length of two L-shaped optical fiber tubes 301,302, flushes the vertical tube top port of four L-shaped optical fiber tubes, and by being opened in
Four through holes on first level plate 602 stretch out first level plate 602；Wherein, L-shaped optical fiber tube 201 and L-shaped optical fiber tube 301 are adjacent
Near to set, light source 4 is arranged on first level plate 602, and is particularly located at the top of L-shaped optical fiber tube 201 and L-shaped optical fiber tube 301,
The flashlight that light source 4 is sent is entered by Space Coupling in the fibre bundle of optical fiber tube and carry out optical transport, i.e. L-shaped optical fiber tube 201
For input path, accordingly, L-shaped optical fiber tube 202 is emitting light path, similarly, and L-shaped optical fiber tube 301 is input path, accordingly, L
Shape optical fiber tube 302 is emitting light path；
Wherein, light source 4 selects LED/light source；L-shaped optical fiber tube is by internal diameter 3mm L-shaped steel pipe and filling and full of on the inside of steel pipe
The multi beam multimode fibre in space is constituted, to meet the transmission requirement of light.Meanwhile, to prevent L-shaped optical fiber tube from damaging, in every L-shaped
Optical fiber outer tube layer is set with the adaptable L-shaped glass protection pipe of one ruler cun structure；
Photodetection and processing unit 5 are arranged on first level plate 602, and it includes the first photodetector, the second light
Electric explorer, signal processor, timer and the display screen being connected with timer；Wherein, the first photodetector difference
It is connected with the vertical tube pipe end of the L-shaped optical fiber tube 202 in timer and the first optical fiber tube group 2；Second photodetector respectively with meter
When device and the L-shaped optical fiber tube 302 in the second optical fiber tube group 3 of homonymy vertical tube pipe end connection；First photodetector and
Second photodetector is respectively used to receive the first optical fiber tube group 2 and the optical transport come that transmits of the second optical fiber tube group 3 blocks letter
Number or optical transport communications signals, and the startup and stopping of timer for controlling to be attached thereto by signal processor, final timing
The display screen of the actual timing time connection of device shows the interval time t of centre.Wherein, the first photodetector, the second light
Electric explorer, signal processor, timer and LED/light source are connected by power line with plug, and direct plug-in can be opened when using
Beginning work.
In use, preparing a depth in laboratory first is more than the height that the optical fiber oil product kinematic viscosity determines device
The glass jar of degree, is added water as water-bath, and bath temperature is set in into a certain temperature that national regulations are measured by internal heater
Lower holding temperature constant state 15 minutes；Then determined to the optical fiber oil product kinematic viscosity in device and inject oil sample to be tested, had
Body method for implanting is：Capillary viscometer 1 is inverted and fills the port immersion of the first pipe shaft 101 in the container of oil sample, is blocked up
On the firmly port of the second pipe shaft 106, the connecting branch that manual getter device is connected to the second pipe shaft 106 by gas pipeline, lead to
The gas crossed in the second pipe shaft 106 of suction makes oil sample enter in the first enlarged portion 102 in the first pipe shaft 101；
After the completion of oil sample is extracted, the position of U-shaped capillary viscometer 1 is returned just, oil sample is left to capillary by Action of Gravity Field
The bending section of the bottom of pipe viscosimeter 1；Capillary viscometer 1 is inserted in water bath with thermostatic control, specially by first level plate below 602
It is partially disposed in water bath with thermostatic control 15 minutes, after temperature is constant, you can proceed by determination step；
Unlatching LED/light source 4 and the first photodetector of photodetection and processing unit 5, the second photodetector, timing
Device and display screen, make each device keep normal power-up working condition；Because the flashlight that LED/light source 4 is sent passes through Space Coupling
Respectively enter in first light-path and Article 2 light-path that the first optical fiber tube group 2 and the second optical fiber tube group 3 are formed, i.e. signal
Light is transmitted to the tube wall side of capillary 104 by incident optical beam, is received with another beam of incident optical on the same line
Optical fiber is just relative in the tube wall opposite side of capillary 104, receives the signal for passing through capillary 104 from the outgoing of incident optical beam
Light, then by reception optical fiber by the optical signal transmission received to photodetector；Therefore when oil sample is horizontal by optical fibre tube
During the end face of pipe, because oil sample is acted on reflection, absorption of space optical signal etc., the light signal strength received is caused significantly to drop
Low, light-path is blocked, and the first photodetector and the second photodetector can be received accordingly, that is, whether judge oil sample
Or pass through the detection end face；
Vavuum pump is connected on the port of the first pipe shaft 101 of capillary viscometer 1 by gas pipeline；Opening vavuum pump makes
Oil sample is slow along along the enlarged portion 103 of capillary 104 and second, when oil sample upper end liquid level reaches the first optical fibre tube fixed plate
When 604, first optical transmission pathway of the first optical fibre tube formation is blocked, and the first photodetector detects the disconnected letter of photoresistance
Number, and be transferred to signal processor and start timer and start timing, while vavuum pump stops suction, and make the first pipe shaft 101 with
Air communication；Oil sample declines by self gravitation, is formed when oil sample upper end liquid level persistently falls and just leaves the second optical fiber tube group 3
Article 2 optical transmission pathway when, Article 2 optical transmission pathway is connected again, and the second photodetector detects light communications signals,
And when being transferred to signal processor stopping timer, timing terminates, and the timing time t of timer is shown on screen；Repeat
Even if measuring three time t, average and obtain tIt is average, and bring the oil sample kinematic viscosity calculating formula provided in standard into, you can
Calculate oil sample to be tested kinematic viscosity vt。
Claims (4)
1. a kind of optical fiber oil product kinematic viscosity determines device, it is characterised in that including capillary viscometer (1), the first light
Fine pipe group (2), the second optical fiber tube group (3), light source (4) and photodetection and processing unit (5)；Wherein,
First optical fiber tube group (2) includes two L-shaped optical fiber tubes, and two L-shaped optical fiber tubes are symmetricly set on capillary viscometer (1) two
Side, and make that the transverse tube of two L-shaped optical fiber tubes is located in same horizontal line and transverse tube pipe end is against the capillary of capillary viscometer (1)
On the wall of pipe offside side；
Second optical fiber tube group (3) also includes two L-shaped optical fiber tubes, and two L-shaped optical fiber tubes are symmetricly set on capillary viscometer (1)
Both sides, and make that the transverse tube of two L-shaped optical fiber tubes is located in same horizontal line and transverse tube pipe end is against the hair of capillary viscometer (1)
On the wall of tubule offside side, and the transverse tube of two L-shaped optical fiber tubes of the second optical fiber tube group (3) is disposed on the first optical fiber tube group
(2) below the transverse tube of two L-shaped optical fiber tubes；
Each L-shaped optical fiber tube of first optical fiber tube group (2) and the second optical fiber tube group (3) is neighbouring to be set, and is arranged on light source (4)
Above the vertical tube pipe end of the neighbouring two L-shaped optical fiber tubes set, the flashlight that light source (4) is sent is set to enter L by Space Coupling
Optical transport is carried out in the fibre bundle of shape optical fiber tube；
Photodetection and processing unit (5) are arranged far from above the vertical tube pipe end of two L-shaped optical fiber tubes of light source (4), and it is wrapped
Include the first photodetector, the second photodetector, signal processor, timer and the display screen being connected with timer；It is described
L-shaped optical fiber tube of first photodetector respectively with timer and the first optical fiber tube group (2) of lower section is connected；Second photodetection
L-shaped optical fiber tube of the device respectively with timer and the second optical fiber tube group (3) of lower section is connected.
2. optical fiber oil product kinematic viscosity according to claim 1 determines device, it is characterised in that light source (4) is LED light
Source；L-shaped optical fiber tube is made up of internal diameter 3mm L-shaped steel pipe and filling and the multi beam multimode fibre full of steel pipe inner space.
3. optical fiber oil product kinematic viscosity according to claim 2 determines device, it is characterised in that the second optical fiber tube group (3)
Two L-shaped optical fiber tubes transverse tube and the first optical fiber tube group (2) L-shaped optical fiber tube transverse tube between perpendicular separation distance be 35
±2mm。
4. optical fiber oil product kinematic viscosity according to claim 2 determines device, it is characterised in that in every L-shaped optical fiber tube
Outer layer jacket is equipped with a L-shaped glass protection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710281229.0A CN107063927A (en) | 2017-04-26 | 2017-04-26 | Optical fiber oil product kinematic viscosity determines device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710281229.0A CN107063927A (en) | 2017-04-26 | 2017-04-26 | Optical fiber oil product kinematic viscosity determines device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107063927A true CN107063927A (en) | 2017-08-18 |
Family
ID=59604147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710281229.0A Pending CN107063927A (en) | 2017-04-26 | 2017-04-26 | Optical fiber oil product kinematic viscosity determines device |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653835A (en) * | 2018-12-24 | 2019-04-19 | 重庆金康新能源汽车设计院有限公司 | Detection method, detection system and the automobile of engine motor oil viscosity |
| CN113634027A (en) * | 2021-07-04 | 2021-11-12 | 林哲鑫 | Suction filtration experimental device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD216319A1 (en) * | 1983-05-26 | 1984-12-05 | Cottbus Energiekombinat | ARRANGEMENT AND METHOD FOR DETECTING PROPERTIES OF A FLUID, IN PARTICULAR A GLASS MELT |
| CN2468038Y (en) * | 2001-03-18 | 2001-12-26 | 唐祥元 | Automatic detecting means of ping's caplastometer |
| CN201096700Y (en) * | 2007-08-30 | 2008-08-06 | 中国人民解放军海军后勤技术装备研究所 | Motion viscidity testing system |
| CN102539286A (en) * | 2011-11-16 | 2012-07-04 | 山东轻工业学院 | Automatic timing device and timing method of capillary viscometer |
-
2017
- 2017-04-26 CN CN201710281229.0A patent/CN107063927A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD216319A1 (en) * | 1983-05-26 | 1984-12-05 | Cottbus Energiekombinat | ARRANGEMENT AND METHOD FOR DETECTING PROPERTIES OF A FLUID, IN PARTICULAR A GLASS MELT |
| CN2468038Y (en) * | 2001-03-18 | 2001-12-26 | 唐祥元 | Automatic detecting means of ping's caplastometer |
| CN201096700Y (en) * | 2007-08-30 | 2008-08-06 | 中国人民解放军海军后勤技术装备研究所 | Motion viscidity testing system |
| CN102539286A (en) * | 2011-11-16 | 2012-07-04 | 山东轻工业学院 | Automatic timing device and timing method of capillary viscometer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653835A (en) * | 2018-12-24 | 2019-04-19 | 重庆金康新能源汽车设计院有限公司 | Detection method, detection system and the automobile of engine motor oil viscosity |
| CN113634027A (en) * | 2021-07-04 | 2021-11-12 | 林哲鑫 | Suction filtration experimental device and method |
| CN113634027B (en) * | 2021-07-04 | 2022-12-23 | 林哲鑫 | Suction filtration experimental device and method |
| CN113634027B8 (en) * | 2021-07-04 | 2023-03-14 | 林哲鑫 | Suction filtration experimental device and method |
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Application publication date: 20170818 |