CN102954926B - Capillary viscometer - Google Patents
Capillary viscometer Download PDFInfo
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- CN102954926B CN102954926B CN201210304272.1A CN201210304272A CN102954926B CN 102954926 B CN102954926 B CN 102954926B CN 201210304272 A CN201210304272 A CN 201210304272A CN 102954926 B CN102954926 B CN 102954926B
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- 238000001514 detection method Methods 0.000 claims abstract description 97
- 239000012530 fluid Substances 0.000 claims abstract description 93
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 210000005239 tubule Anatomy 0.000 claims description 100
- 238000005259 measurement Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000000295 fuel oil Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
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- 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
- G01N11/08—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 measuring pressure required to produce a known flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Measuring Volume Flow (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention provides a cpillary viscometer which can eliminate chaos of the flow of the detected fluid on a constant flow pump and a delivery pipe so as to cause the detected flow to laminar state in differential pressure flow detection with capillary, and can use differential pressure sensor to correctly detect the differential detection with a capillary pressure difference between inlet side and outlet, thus being able to be reliably for viscosity measurement. In the differential detection with the upstream side of the tubes, have is better than the differential detection with thin tube flow cross-section of large cross-sectional area of flow channel the flow of control room.
Description
Technical field
The present invention relates to the following thin-tube type viscosity meter forming,, at the such as determined fluid such as A heavy oil (MDO), light oil (MGO) that flows in tubule for pressure differential detection, detect the pressure differential detection inlet end of tubule and the pressure reduction of endpiece with differential pressure pickup, measure thus the viscosity of fluid.
Background technology
In the past, use following thin-tube type viscosity meter,, have with the laminar condition of constant rate at viscous fluid mobile in the tubule of constant internal diameter, the pressure differential being produced by the upstream side in tubule and downstream and the relation of flow, according to the law of Ha Gen-poiseuille (Hagen-Poiseuille) stream, obtain continuously viscosity.
; the formula of so-called this Ha Gen-Poiseuille flow; utilize following character: certain fluid with the laminar condition of flow (q) in the case of mobile in the tubule of internal diameter radius (r), length (l); pressure differential (Δ P) between inlet end and the endpiece of tubule is proportional with the viscosity (η) of fluid, and formula 1 described as follows represents.
Mathematical expression 1:
As shown in above-mentioned formula 1, if the shape of known tubule and flow, by detecting the tubule for pressure differential detection (Δ P) of tubule, can be measured the viscosity (η) of fluid.
Fig. 6 is the schematic diagram that has represented to utilize the thin-tube type viscosity meter in the past of the formula of this Ha Gen-Poiseuille flow.
As shown in Figure 6, thin-tube type viscosity meter 100 is in the past configured to, and utilizes constant flow pump 104, via tail pipe 102, from stockpiling tank, the pipe arrangement etc. of not shown determined fluid, extracts determined fluid out.
And, be configured to, the determined fluid of being extracted out by constant flow pump 104 is via delivery pipe 106, and with laminar condition in pressure differential detection with flowing in tubule 108, and discharge from vent pipe 110.
On the other hand, high pressure detector tube 112 starts branch from pressure differential detection with the inlet end 108a of tubule 108, and via differential pressure pickup 114, low pressure detector tube 116, is connected with the endpiece 108b of tubule 108 with pressure differential detection, thus, to differential pressure pickup 114 transmission of pressures.
Thus, be configured to, utilize differential pressure pickup 114 to detect the pressure reduction of the pressure of high pressure detector tube 112 and the pressure of low pressure detector tube 116, use formula 1 this pressure reduction that converts, thus calculate viscosity.
Prior art document
Patent documentation 1: No. 3796330 communique of Jap.P.
But, in recent years, in order to prevent environmental disruption, for example, in land automobile, heat power station etc., strengthened exhaust restriction.This exhaust restriction is also without exception for marine boats and ships, has started restriction in a part of marine site.
, the fuel of boats and ships forcibly uses the light oil (MGO) of lower Sulfur (LSA) compared with the A heavy oil (MDO) using so far in the coastal waters on land.This light oil (MGO) is that the viscosity in the time of 15 DEG C is the very low viscous fluid below 2mPas.
But, to viscous fluid by tubule in time the pressure loss that produces detect, and viscometric thin-tube type viscosity meter 100 in the past in, pressure differential detection with the determined fluid in tubule 108 flow for laminar flow be important condition.
In the case of the viscosity of this determined fluid is high, laminar flow forms in short distance, but in the case of the viscosity of determined fluid is low, needs long distance till forming laminar flow.
In addition, in order to make 100 miniaturizations of thin-tube type viscosity meter, as shown in Figure 6, if to from constant flow pump 104 to pressure differential detection, the delivery pipe 106 with the determined fluid till tubule 108 carries out bending machining, in the case of the viscosity of for example light oil (MGO) and so on determined fluid is low, in sweep, produce secondary flow (Secondary Flow), do not produce laminar flow because this secondary flow makes to measure fluid confusion.Its result, pressure differential detection can not become laminar flow with flowing of the determined fluid in tubule 108, and measures large impact.
Therefore, in the case of the viscosity of for example light oil (MGO) and so on determined fluid is low, if by from constant flow pump 104 to pressure differential detection, the delivery pipe 106 with the determined fluid till tubule 108 is configured to linearity, and by elongated its distance, in delivery pipe 106, the mobile laminar flow that becomes of determined fluid, and can not produce secondary flow (Secondary Flow) yet.
But, if like this by from constant flow pump 104 to pressure differential detection, the delivery pipe 106 with the determined fluid till tubule 108 is configured to linearity, and, by elongated its distance, thin-tube type viscosity meter 100 maximizes, and, also have a lot in the textural situation that cannot be configured to linearity.
Therefore, No. 3796330 communique of patent documentation 1(patent) in following viscosity detecting gauge unit is disclosed, that is, by setting up the gear-type pump of duplex, and form at the peripheral part helically of this pump the kapillary that viscosity instrumentation is used, form compactly device entirety.
But, in the viscosity detecting gauge unit of this patent documentation 1, must arrange the gear-type pump of duplex, thereby complex structure, and, in the case of the viscosity of for example light oil (MGO) and so on determined fluid is low, there is the situation that produces secondary flow (Secondary Flow) in sweep, measure large impact.
Summary of the invention
The present invention is in view of such present situation, its object is to provide following thin-tube type viscosity meter,, even in the case of the viscosity of for example light oil (MGO) and so on determined fluid is low, also can eliminate the mobile confusion of the determined fluid producing on constant flow pump, delivery pipe, and determined fluid is flowed in pressure differential detection tubule with laminar condition, can utilize differential pressure pickup correctly the pressure differential between inlet end and the endpiece of pressure differential detection tubule to be detected, thereby can carry out reliably viscosimetric analysis.
In addition, the object of the present invention is to provide following thin-tube type viscosity meter,, even be the state of secondary flow (Secondary Flow), sinuous flow in delivery pipe, also can eliminate the mobile confusion of this determined fluid, and can intricately bending delivery pipe, thereby can use the more pipe arrangement of refinement, and then also can be installed on complicated tectosome and improve the degree of freedom of design.
In addition, the present invention is owing to once becoming stably and flowing in pulpit flowing, thus can by until pressure differential detection with the laminar flow in tubule complete help the shortening of starting interval, thereby compact thin-tube type viscosity meter can be provided.
The present invention invents for problem and the object reached in above-mentioned conventional art, and thin-tube type viscosity meter of the present invention is configured to,
Make determined fluid in pressure differential detection with flowing in tubule, utilize differential pressure pickup to detect the pressure differential detection inlet end of tubule and the pressure reduction of endpiece, measure thus the viscosity of fluid, this thin-tube type viscosity meter is characterised in that,
Upstream side in above-mentioned pressure differential detection with tubule, is provided with mobile pulpit, and it is long-pending that this mobile pulpit has the cross section of fluid channel long-pending larger than the cross section of fluid channel of pressure differential detection tubule.
By such formation, there is the upstream side that the cross section of fluid channel long-pending mobile pulpit long-pending larger than the cross section of fluid channel of pressure differential detection tubule is arranged at pressure differential detection tubule, so determined fluid flows into this mobile pulpit, mobile pulpit can be used as impact damper performance function thus, and reduce flow velocity in mobile pulpit, and it is mobile stably that fluid is become.
Therefore, even in the case of the viscosity of for example light oil (MGO) and so on determined fluid is low, also can eliminate the mobile confusion of the determined fluid producing on constant flow pump, delivery pipe, determined fluid is flowed in pressure differential detection tubule with laminar condition, can utilize differential pressure pickup correctly to detect the pressure differential between pressure differential detection inlet end and the endpiece of tubule, thereby can carry out reliably viscosimetric analysis.
In addition, following thin-tube type viscosity meter can be provided,, even be the state of secondary flow (Secondary Flow), sinuous flow in delivery pipe, also can eliminate the mobile confusion of this determined fluid, also can be by the bending of delivery pipe intricately, thus the more pipe arrangement of refinement can be used, and then also can be installed on complicated tectosome and improve the degree of freedom of design.
In addition, once becoming stably and flowing in pulpit flowing, thus can by until pressure differential detection with the laminar flow in tubule complete help the shortening of starting interval, thereby compact thin-tube type viscosity meter can be provided.
In addition, thin-tube type viscosity meter of the present invention is characterised in that, in above-mentioned mobile pulpit, disposes at least a portion of pressure differential detection tubule.
Like this, due to flowing in pulpit, dispose at least a portion of pressure differential detection tubule, so the pulpit of flowing becomes the state that is surrounded with pressure differential detection tubule, thereby can form compactly thin-tube type viscosity meter.
In addition, thin-tube type viscosity meter of the present invention is characterised in that, the entrance of high-pressure side detector tube of arm that disposes above-mentioned differential pressure pickup is disposed to the downstream of above-mentioned mobile pulpit.
Like this, by the entrance of the high-pressure side detector tube of the arm of configuration differential pressure pickup being disposed to the downstream of above-mentioned mobile pulpit, have stably and flow in the downstream of the pulpit of flowing, mobile confusion disappears, thereby can utilize differential pressure pickup to detect correct on high-tension side pressure, its result, can carry out viscosimetric analysis reliably.
In addition, thin-tube type viscosity meter of the present invention is characterised in that, the entrance of high-pressure side detector tube of the arm that disposes above-mentioned differential pressure pickup is disposed to the downstream of above-mentioned mobile pulpit and is disposed near the above-mentioned pressure differential detection upstream-side-end of tubule.
Like this, due to the entrance of high-pressure side detector tube of the arm that disposes differential pressure pickup is disposed to the downstream of above-mentioned mobile pulpit and is disposed near the above-mentioned pressure differential detection upstream-side-end of tubule, so in the downstream of pulpit of flowing, especially pressure differential detection is with near the upstream-side-end of tubule, have stably and flow, mobile confusion disappears, thereby can utilize differential pressure pickup to detect correct on high-tension side pressure, its result, can carry out viscosimetric analysis reliably.
Effect of the present invention is as follows.
According to the present invention, owing to thering is the upstream side that is arranged at pressure differential detection tubule than the long-pending mobile pulpit of the long-pending large cross section of fluid channel of the cross section of fluid channel of pressure differential detection tubule, so determined fluid flows into this mobile pulpit, mobile pulpit can be used as impact damper and brings into play function thus, and reduce flow velocity in mobile pulpit, and it is mobile stably that fluid is become.
Therefore, even in the case of the viscosity of for example light oil (MGO) and so on determined fluid is low, also can eliminate the mobile confusion of the determined fluid producing on constant flow pump, delivery pipe, determined fluid is flowed in pressure differential detection tubule with laminar condition, can utilize differential pressure pickup correctly to detect the pressure differential between pressure differential detection inlet end and the endpiece of tubule, thereby can carry out reliably viscosimetric analysis.
Brief description of the drawings
Fig. 1 is the schematic diagram that represents thin-tube type viscosity meter of the present invention.
Fig. 2 is the cut-open view of the A-A line of the thin-tube type viscosity meter of Fig. 1.
Fig. 3 is the enlarged drawing of the mobile pulpit of the thin-tube type viscosity meter of Fig. 1.
Fig. 4 represents other the schematic diagram of thin-tube type viscosity meter of embodiment of the present invention.
Fig. 5 is other the enlarged drawing of mobile pulpit of thin-tube type viscosity meter of embodiment of the present invention.
Fig. 6 is the schematic diagram that represents thin-tube type viscosity meter in the past.
In figure:
10-thin-tube type viscosity meter, 12-tail pipe, 14-constant flow pump, 16-delivery pipe, 16a-downstream end, 18-pressure differential detection tubule, 18a-mouth end, 18b-endpiece, 20-vent pipe, 22-high pressure detector tube, 22a-inlet end, 24-differential pressure pickup, 26-constant flow pump, 28-low pressure detector tube, 30-pulpit, 30a-leading section, 30b-rearward end, 30c-downstream end, 30d-upstream extremity, 30e-upper end, 30f-lower end, 100-thin-tube type viscosity meter, 102-tail pipe, 104-constant flow pump, 106-delivery pipe, 108-pressure differential detection tubule, 108a-inlet end, 108b-endpiece, 110-vent pipe, 112-high pressure detector tube, 114-differential pressure pickup, 116-low pressure detector tube.
Embodiment
Below, based on accompanying drawing, embodiments of the present invention (embodiment) are further elaborated.
Embodiment 1
Fig. 1 is the schematic diagram that represents thin-tube type viscosity meter of the present invention, and Fig. 2 is the cut-open view of the A-A line of the thin-tube type viscosity meter of Fig. 1, and Fig. 3 is the enlarged drawing of the mobile pulpit of the thin-tube type viscosity meter of Fig. 1.
In Fig. 1, symbol 10 represents thin-tube type viscosity meter entirety of the present invention.
As shown in Figure 1, thin-tube type viscosity meter 10 is configured to, and utilizes constant flow pump 14, via tail pipe 12, illustrated tank, the pipe arrangement etc. that stockpiles the determined fluid that such as light oil (MGO) and so on viscosity is low never, extracts determined fluid out.
And, be configured to, be provided with the upstream side of tubule 18 pulpit 30 of flowing in pressure differential detection, the determined fluid of being extracted out by constant flow pump 14 is via delivery pipe 16, and the mobile pulpit 30 of inflow.
, in rearward end 30b(Fig. 1 of the length direction of the downstream end 16a of delivery pipe 16 and mobile pulpit 30, be, the upstream side of the mobile pulpit 30 on right side) connect.
In addition, in the leading section 30a(Fig. 1 of length direction of pulpit 30 that flows, being the downstream of the mobile pulpit 30 in left side) there is high pressure detector tube 22 in branch.That is, pressure differential detection with near the upstream-side-end of tubule 18, i.e. near of the inlet end 18a of pressure differential detection tubule 18, dispose the inlet end 22a of high pressure detector tube 22.
And high pressure detector tube 22 is via differential pressure pickup 24, low pressure detector tube 28 and be connected with the endpiece 18b of tubule 18 with pressure differential detection, thus, to differential pressure pickup 24 transmission of pressures.
On the other hand, be positioned near the mode leading section 30a of length direction of the pulpit 30 of flowing with the inlet end 18a of tubule 18 with pressure differential detection, at least a portion of pulpit 30 interior configuration pressure differential detection tubule 18 that flows.
And, being configured to, the determined fluid that flows into the pulpit 30 of flowing via delivery pipe 16 is used in tubule 18 and is flowed in pressure differential detection with laminar condition, and discharges from vent pipe 20.
Thus, utilize differential pressure pickup 24 to detect the pressure reduction of the pressure of high pressure detector tube 22 and the pressure of low pressure detector tube 28, and use formula 1 this pressure reduction of conversion, thereby calculate viscosity.
In this situation, as shown in Figure 1 and Figure 2, the cross section of fluid channel of the pulpit 30 of flowing amasss to be formed as having than pressure differential detection uses the long-pending large cross section of fluid channel of cross section of fluid channel of tubule 18 to amass.
By such formation, as shown in the arrow of Fig. 1, utilize constant flow pump 14 and the determined fluid that is drawn out of via tail pipe 12 via delivery pipe 16, from the downstream end 16a of delivery pipe 16, flow into the rearward end 30b of the length direction of the pulpit 30 of flowing.
And the determined fluid that flows into the pulpit 30 of flowing flows towards the direction of the leading section 30a of the length direction of the pulpit 30 of flowing.
Now, because amassing to have than pressure differential detection, the cross section of fluid channel of the pulpit 30 of flowing use the long-pending large cross section of fluid channel of cross section of fluid channel of tubule 18 to amass, so flow into this mobile pulpit 30 by measuring fluid, mobile pulpit can be used as impact damper performance function, thereby at the interior reduction flow velocity in mobile pulpit 30, and it is mobile stably that fluid is become.
Therefore, even in the case of the viscosity of for example light oil (MGO) and so on determined fluid is low, also can eliminate the mobile confusion of the determined fluid producing on constant flow pump 14, delivery pipe 16, make determined fluid interior mobile at pressure differential detection tubule 18 with laminar condition, can utilize differential pressure pickup 24 correctly to detect the pressure differential between pressure differential detection inlet end 18a and the endpiece 18b of tubule 18, thereby can carry out reliably viscosimetric analysis.
In this situation, due near the upstream-side-end with tubule 18 in pressure differential detection, pressure differential detection disposes the inlet end 22a of high pressure detector tube 22 with near of the inlet end 18a of tubule 18, so in the downstream of pulpit 30 of flowing, especially near the pressure differential detection upstream-side-end of tubule 18, for flowing stably, mobile confusion disappears, thereby can utilize differential pressure pickup 24 to detect on high-tension side pressure accurately, its result, can carry out viscosimetric analysis reliably.
In this situation, for example, as shown in Figure 3, be 3:2 in pressure differential detection with the ratio L1:L2 that the length L 1 of tubule 18 is about 150mm, the length L 1 of pressure differential detection tubule 18 and the length L 2 of mobile pulpit 30, as shown in Figure 2, pressure differential detection is 1:30 ~ 1:50 with the long-pending S1 of cross section of fluid channel of tubule 18 with the ratio S1:S2 of the long-pending S2 of cross section of fluid channel of mobile pulpit 30, and now determined fluid flows with tubule 18 is interior in pressure differential detection with laminar condition, thereby preferably.
In addition, as shown in Figure 2, for pressure differential detection, the relation of the inner diameter d 3 of the inner diameter d 1 of tubule 18, the outside diameter d 2 of pressure differential detection tubule 18, the pulpit 30 of flowing is preferably following setting.
That is, pressure differential detection is calculated by the discharge rate of constant flow pump 14 by the inner diameter d 1 of tubule 18, and reynolds number Re is preferably set to promise and counts Re < 2300, is 1mm so that work as the kinetic viscosity of determined fluid
2/ s(cSt) time, laminar flow become reliably in pressure differential detection with the determined fluid that tubule 18 flows.
In this situation, in order to calculate Reynolds number, calculate according to following Reynolds number calculating formula.
Re＝vd/v
Wherein, v is flow velocity, and d is the internal diameter of pressure differential detection tubule 18, and ν is the kinetic viscosity of determined fluid.
In addition, be preferably set to, consider the outside diameter d 2 of pressure differential detection tubule and the inner diameter d 3 of the pulpit 30 of flowing is made as approximately 6 times, approximately 1/30 of the flow velocity in the flow velocity of the interior mobile determined fluid in pulpit 30 that flows is made as pressure differential detection tubule 18.
Thus, 1mm
2the determined fluid of/s is Re ≈ 200 at the interior reynolds number Re when mobile in the pulpit 30 of flowing, and becomes stably and flow, thereby becomes reliably laminar flow in pressure differential detection with tubule 18 mobile determined fluids.
For example, preferably pressure differential detection is made as approximately by the inner diameter d 1 of tubule 18
pressure differential detection is made as approximately by the outside diameter d 2 of tubule 18
the inner diameter d 3 of the pulpit 30 of flowing is made as approximately
In addition, as shown in Figure 3, preferably by pressure differential detection with the length L 1 of tubule 18 be made as than until the laminar condition of determined fluid complete help the long length in starting interval.
In this situation, by the following calculating formula that helps starting interval, set the length L 1 of pressure differential detection tubule 18.
L1＝k·Re/d
Wherein, Re is Reynolds number, and d is the internal diameter of pressure differential detection tubule 18, and coefficient k is 0.06 ~ 0.065.
In addition, the length L 2 of pulpit 30 of flowing needs not be and in pulpit 30, completes the length of laminar flow flowing, and need to be only the length of the distance that disappears of the state of the secondary flow (Secondary Flow) that makes to produce on constant flow pump 26 and delivery pipe 16, sinuous flow.
In addition, by by the upstream side for the mobile pulpit 30 on right side in rearward end 30b(Fig. 1 of the downstream end 16a of delivery pipe 16 and the length direction of mobile pulpit 30) is connected, can be by elongated the distance flowing reposefully at the interior mobile determined fluid in mobile pulpit 30.In addition, the replacing of the determined fluid of mobile pulpit 30 also accelerates.
According to experiment, as shown in Figure 2, known, make the pressure differential detection inner diameter d 1 of tubule 18 for approximately
make the pressure differential detection outside diameter d 2 of tubule 18 for approximately
make to flow the inner diameter d 3 of pulpit 30 for approximately
situation under, it is enough that the length L 2 of pulpit 30 of flowing is made as 1/2 left and right of length L 1 of pressure differential detection tubule 18, but for abundant and be preferably made as pressure differential detection tubule 18 length L 1 2/3.
, pressure differential detection is preferably 3:2 with the ratio L1:L2 of the length L 1 of tubule 18 and the length L 2 of mobile pulpit 30.
And, in downstream end 30c(Fig. 1 of mobile pulpit 30, for the downstream end 30c of the mobile pulpit 30 in left side) and pressure differential detection be preferably set to and the size of outside diameter d 2 same degree of pressure differential detection tubule 18 by the gap L 3 between the inlet end 18a of tubule 18 so that the flow velocity of determined fluid does not change substantially.
In addition, downstream end 30c and the pressure differential detection of mobile pulpit 30 are preferably 1:25 by the gap L 3 between the inlet end 18a of tubule 18 with the ratio L3:L2 of the length L 2 of mobile pulpit 30.
For example, preferably pressure differential detection is made as to about 150mm by the length L 1 of tubule 18, the length L 2 of the pulpit 30 of flowing is made as to about 100mm, downstream end 30c and the pressure differential detection of the pulpit 30 of flowing are made as to about 4mm by the gap L 3 between the inlet end 18a of tubule 18.
And, as shown in Figure 3, for the position being connected with mobile pulpit 30 of the downstream end 16a of delivery pipe 16, the distance L 4 starting from the upstream extremity 30d of the pulpit 30 of flowing be preferably set to the pulpit 30 of flowing length L 2 1/10 in.
In addition, in this embodiment, the cross sectional shape of flow pulpit 30 is that circular situation is illustrated, but amassing to have than pressure differential detection, the cross section of fluid channel of the pulpit 30 of flowing use the long-pending large cross section of fluid channel of cross section of fluid channel of tubule 18 to amass, for example, can be ellipse, triangle, rectangle, polygon-shaped etc., be not particularly limited, benchmark according to the above description, suitably sets.
Embodiment 2
Fig. 4 represents other the schematic diagram of thin-tube type viscosity meter of embodiment of the present invention.
The thin-tube type viscosity meter 10 of this embodiment and the thin-tube type viscosity meter 10 shown in Fig. 1 ~ Fig. 3 are essentially identical formation, for identical component parts note identical with reference to numbering, and omit its detailed explanation.
In the thin-tube type viscosity meter 10 of the above embodiments 1, in at least a portion of pulpit 30 interior configuration pressure differential detection tubule 18 that flows, but in the thin-tube type viscosity meter 10 of this embodiment, also can be as shown in Figure 4, pressure differential detection is not positioned at tubule 18 pulpit 30 of flowing.
, in the thin-tube type viscosity meter 10 of this embodiment, as shown in Figure 4, in leading section 30a(Fig. 1 of the length direction of the downstream end 16a of delivery pipe 16 and mobile pulpit 30, be, the upstream side of the mobile pulpit 30 in left side) connect.
In addition, pressure differential detection is with in the inlet end 18a of tubule 18 and downstream end 30c(Fig. 4 of mobile pulpit 30, is the downstream end 30c of the mobile pulpit 30 on right side) connection.
And, in the rearward end 30b(Fig. 4 of length direction of pulpit 30 that flows, be the downstream of the mobile pulpit 30 on right side), i.e. near with the inlet end 18a of tubule 18 in pressure differential detection, disposes the inlet end 22a of high pressure detector tube 22.
In the thin-tube type viscosity meter 10 of this embodiment, also can make the mobile confusion of the determined fluid producing on constant flow pump 26 and delivery pipe 16 become mobile stably.
But pressure differential detection need to be constant length with tubule 18, thereby cannot make the length L 2 of mobile pulpit 30 elongated.
Therefore, for example, elongated in the paper of Fig. 4 make the to flow length of depth direction of pulpit 30, or the in the situation that of being drum in mobile pulpit 30, make the inner diameter d 3 of mobile pulpit 30 become large, can shorten thus the length L 2 of the pulpit 30 of flowing, but not shown to this.
Embodiment 3
Fig. 5 is other the enlarged drawing of mobile pulpit of thin-tube type viscosity meter of embodiment of the present invention.
The thin-tube type viscosity meter 10 of this embodiment and the thin-tube type viscosity meter 10 shown in Fig. 4 are essentially identical formation, for identical component parts note identical with reference to numbering, and omit its detailed explanation.
In the thin-tube type viscosity meter 10 of the above embodiments 2, if linearity (horizontal direction) configuration delivery pipe 16 and tubule 18 for pressure differential detection, need consideration by the mobile confusion of the inflow entrance (the downstream end 16a of delivery pipe 16) of delivery pipe 16, pressure differential detection to be used the impact of tubule 18.
Like this, in the thin-tube type viscosity meter 10 of the above embodiments 2, it is horizontal direction that the pulpit 30 of flowing is formed as length direction, but in this embodiment, flows pulpit 30 as shown in Figure 5, on above-below direction, configures.
That is, the downstream end 16a of delivery pipe 16 is disposed near the upper end 30e of the pulpit 30 of flowing, and pressure differential detection is disposed near the lower end 30f of the pulpit 30 of flowing with the inlet end 18a of tubule 18.
By such formation, delivery pipe 16 staggers with the setting position of tubule 18 with pressure differential detection, and, synthesize for making the distance stably that flows at the interior mobile determined fluid in pulpit 30 that flows.
Above, mode to preferred enforcement of the present invention is illustrated, but the present invention is not limited to this, for example, in above-described embodiment, for for example light oil (MGO) and so on the low determined fluid of viscosity, but also can in the case of other the viscosity of fluid beyond the fluid to such as A heavy oil (MDO), C heavy oil (MFO) and so on viscosity is high and oil is measured, use etc., in the scope that does not depart from object of the present invention, can there is various changes.
Utilizability in industry
Can be used in the thin-tube type viscosity meter of following formation,, by the such as determined fluid such as A heavy oil (MDO), light oil (MGO) is flowed in pressure differential detection tubule, and utilize differential pressure pickup to detect the pressure differential detection inlet end of tubule and the pressure reduction of endpiece, measure the viscosity of fluid.
Claims (2)
1. a thin-tube type viscosity meter, it is configured to, and determined fluid is flowed in pressure differential detection tubule, utilize differential pressure pickup to detect the pressure differential detection inlet end of tubule and the pressure reduction of endpiece, measure thus the viscosity of fluid, this thin-tube type viscosity meter is characterised in that
Be provided with mobile pulpit in described pressure differential detection with the upstream side of tubule, it is long-pending that this mobile pulpit has the cross section of fluid channel long-pending larger than the cross section of fluid channel of pressure differential detection tubule, and above-mentioned mobile pulpit reduces the flow velocity of above-mentioned fluid and above-mentioned fluid is flowed reposefully,
In described mobile pulpit, dispose at least a portion of pressure differential detection tubule.
2. thin-tube type viscosity meter according to claim 1, is characterized in that,
The entrance of high-pressure side detector tube of arm that disposes described differential pressure pickup is disposed to the downstream of described mobile pulpit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011182573A JP5357223B2 (en) | 2011-08-24 | 2011-08-24 | Capillary viscometer |
| JP2011-182573 | 2011-08-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
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| JP6527342B2 (en) * | 2015-01-30 | 2019-06-05 | 東京ガスエンジニアリングソリューションズ株式会社 | Liquid measuring device |
| US10041305B2 (en) * | 2015-09-11 | 2018-08-07 | Baker Hughes Incorporated | Actively controlled self-adjusting bits and related systems and methods |
| KR101882855B1 (en) | 2017-10-23 | 2018-07-30 | (주) 상은아이앤지 | Ink viscosity controller and method of the ink viscosity control |
| CN111665168B (en) * | 2019-03-07 | 2023-05-23 | 中国石油化工股份有限公司 | Device and method for detecting viscosity of fluid under pressure pulse condition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4750351A (en) * | 1987-08-07 | 1988-06-14 | The United States Of America As Represented By The Secretary Of The Army | In-line viscometer |
| DE4220157A1 (en) * | 1991-07-11 | 1993-01-21 | Buehler Ag | Paste and emulsion viscosity measurement w.r.t. shear-rate using capillaries - forcing sample through capillaries of differing cross=sectional area, and measuring pressure difference |
| CN2406245Y (en) * | 2000-01-25 | 2000-11-15 | 李浪 | Valve device for detection of capillary tube viscosity meter |
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| JPS4519423Y1 (en) * | 1967-04-22 | 1970-08-06 | ||
| JPH0648355B2 (en) * | 1986-07-04 | 1994-06-22 | 富士写真フイルム株式会社 | Silver halide photographic light-sensitive material |
| JPS6314141U (en) * | 1986-07-11 | 1988-01-29 | ||
| JP3796330B2 (en) * | 1997-09-09 | 2006-07-12 | 株式会社中北製作所 | Viscosity detection unit in fuel oil viscosity automatic adjuster |
| JP3903015B2 (en) * | 2003-02-05 | 2007-04-11 | 株式会社日立ハイテクノロジーズ | Chemical analyzer |
| JP2006150745A (en) * | 2004-11-29 | 2006-06-15 | Canon Inc | Inkjet recording device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4750351A (en) * | 1987-08-07 | 1988-06-14 | The United States Of America As Represented By The Secretary Of The Army | In-line viscometer |
| DE4220157A1 (en) * | 1991-07-11 | 1993-01-21 | Buehler Ag | Paste and emulsion viscosity measurement w.r.t. shear-rate using capillaries - forcing sample through capillaries of differing cross=sectional area, and measuring pressure difference |
| CN2406245Y (en) * | 2000-01-25 | 2000-11-15 | 李浪 | Valve device for detection of capillary tube viscosity meter |
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| KR101375537B1 (en) | 2014-03-17 |
| CN102954926A (en) | 2013-03-06 |
| JP5357223B2 (en) | 2013-12-04 |
| JP2013044643A (en) | 2013-03-04 |
| KR20130023056A (en) | 2013-03-07 |
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