CN206710246U - Optical fiber oil product kinematic viscosity determines device - Google Patents

Abstract

The utility model discloses a kind of optical fiber oil product kinematic viscosity to determine device, including capillary viscometer, the first optical fiber tube group, the second optical fiber tube group, light source and photodetection and processing unit；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

Optical fiber oil product kinematic viscosity determines device

Technical field

Oil field development experimental assembly technical field is the utility model is related to, more particularly to a kind of optical fiber oil product motion is viscous Degree measure device.

Background technology

With successively decreasing year by year for Some Domestic field output, equipment wearing aggravation, oil product is changed by the cycle What is become is particularly important, and viscosity is whether evaluation oil property can meet one of important indicator of need of work, right in 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 unique instrument that metrological service can demarcate 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；" temperature drift " phenomenon, serious restriction and shadow be present 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.

Utility model content

The purpose of this utility model be to provide one kind meet national standard being capable of limnograph oil sample viscosity and not by temperature The optical fiber oil product kinematic viscosity measure device that change influences.

Therefore, technical solutions of the utility model are 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 In offside side wall；

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 In offside side wall, 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 formed.

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 of the measure device national regulations and corresponding measurement request 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 are not disturbed by temperature fluctuation, meet laboratory to oil The requirement that the full-automatic kinematic viscosity of sample is accurately tested, there is higher commercial value in terms of the measurement of oil kinematic viscosity at home.

Brief description of the drawings

Fig. 1 is the positive structure schematic that optical fiber oil product kinematic viscosity of the present utility model determines device；

Fig. 2 is the side structure schematic diagram that optical fiber oil product kinematic viscosity of the present utility model determines device；

Fig. 3 is the structural representation for the capillary viscometer that optical fiber oil product kinematic viscosity of the present utility model determines device Figure；

Fig. 4 is capillary viscometer, the second optical fiber that optical fiber oil product kinematic viscosity of the present utility model determines device The structural representation of set-up mode between pipe group and the second optical fiber tube group.

Embodiment

Below in conjunction with the accompanying drawings and specific embodiment is described further to the utility model, but following embodiments are right absolutely not The utility model has any restrictions.

As shown in figure 1, the capillary that optical fiber oil product kinematic viscosity measure device includes 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 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；In the side wall at the port close to 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 the internal diameter of capillary 104 is depending on the species of 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, to meet that oil sample to be tested is no less than 200s in the flowing time of timing section；

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 The both sides of capillary viscometer 1 are arranged on, and the transverse tube of two L-shaped optical fiber tubes is located in same horizontal line and the pipe end end of transverse tube Face is against in the capillary offside side wall of capillary viscometer 1；

Correspondingly, to make the capillary of two L-shaped optical fiber tubes 201,202 of the first optical fiber tube group 2 and 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 are interconnected with the axially extending bore on plate, make the horizontal stroke of two L-shaped optical fiber tubes 201,202 Pipe is inserted into jack and end face contacts with the capillary 104 of capillary viscometer 1；Two L-shaped optical fiber tubes 201,202 take the shape of the letter U, Capillary 104 made of clear glass between forms the light-path of first connection；

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 In 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 the capillary of two L-shaped optical fiber tubes 301,302 of the second optical fiber tube group 3 and 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 contacts with the capillary 104 of capillary viscometer 1, two L-shaped optical fiber tubes 301,302 is taken the shape of the letter U, and leads to Clear glass vertical tube 101 between crossing forms the light-path of Article 2 connection；

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, flush 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, and similarly, 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 formed, 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 connected with the vertical tube pipe end of the L-shaped optical fiber tube 302 in the second optical fiber tube group 3 of homonymy；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 being attached thereto by signal processor control, 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, during use direct plug-in can open Beginning work.

In use, prepare the height that a depth is more than optical fiber oil product kinematic viscosity measure device in laboratory first The glass jar of degree, add water as water-bath, bath temperature is set in by a certain temperature that national regulations measure by internal heater Lower holding temperature constant state 15 minutes；Then oil sample to be tested is injected into optical fiber oil product kinematic viscosity measure device, had Body method for implanting is：Capillary viscometer 1 is inverted and immersed the port of the first pipe shaft 101 in the container for filling oil sample, is blocked up The firmly port of the second pipe shaft 106, manual getter device is connected on the connecting branch of the second pipe shaft 106 by gas pipeline, led 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 extracts, 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；

Open LED light source 4 and the first photodetector of photodetection and processing unit 5, the second photodetector, timing Device and display screen, each device is set to 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 by 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 reflection of the oil sample to space optical signal, absorption etc. act on, the light signal strength for causing to receive significantly drops Low, light-path is blocked, and the first photodetector and the second photodetector can receive accordingly, that is, whether judge oil sample Or have already passed 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 slowly 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 that the first optical fibre tube is formed 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, and when oil sample upper end, liquid level persistently falls and just leaves the second optical fiber tube group 3 and formed Article 2 optical transmission pathway when, Article 2 optical transmission pathway connects 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 time t three times, average to obtain t_{It is average}, and bring the oil sample kinematic viscosity provided in standard into and calculate formula, you can Calculate oil sample to be tested kinematic viscosity v_t。

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) In pipe offside side wall；

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) In tubule offside side wall, 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) the perpendicular separation distance between the transverse tube of the transverse tube of two L-shaped optical fiber tubes and the L-shaped optical fiber tube of the first optical fiber tube group (2) For 35 ± 2mm.

4. optical fiber oil product kinematic viscosity according to claim 2 determines device, it is characterised in that in every L-shaped light Fine outer tube layer is set with a L-shaped glass protection pipe.