JPH047827B2 - - Google Patents

Info

Publication number
JPH047827B2
JPH047827B2 JP25655684A JP25655684A JPH047827B2 JP H047827 B2 JPH047827 B2 JP H047827B2 JP 25655684 A JP25655684 A JP 25655684A JP 25655684 A JP25655684 A JP 25655684A JP H047827 B2 JPH047827 B2 JP H047827B2
Authority
JP
Japan
Prior art keywords
sample
viscometer
time
tube
capillary tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP25655684A
Other languages
Japanese (ja)
Other versions
JPS61134643A (en
Inventor
Toshio Honmo
Soichi Mitsubori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eneos Corp
Original Assignee
Mitsubishi Oil Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Oil Co Ltd filed Critical Mitsubishi Oil Co Ltd
Priority to JP25655684A priority Critical patent/JPS61134643A/en
Publication of JPS61134643A publication Critical patent/JPS61134643A/en
Publication of JPH047827B2 publication Critical patent/JPH047827B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/02Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
    • G01N11/04Investigating 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

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

(産業上の利用分野) 本発明は原油及び石油製品の動粘度試験方法に
おける自動粘度測定装置用の粘度計に関するもの
である。 (従来の技術) 従来の自動粘度測定装置用の粘度計は第2図に
示すように、毛管2が鉛直な幹状をなし、下部試
料だめ球3より分岐した通気管1が枝状となつて
構成されたものであつた。このガラス製毛管粘度
計(以下粘度計という)を使用して原油及び石油
製品の動粘度を測定するには、次のようにしてい
た。すなわち、試料中に試料採取口4を浸し、通
気管1を弁(電磁弁)で閉塞し、毛管2から真空
アスピレーターにより試料を上部試料だめ球5の
中間まで吸引し、毛管2を弁で閉塞する。静置時
間(40℃で測定する場合は約10分間、100℃で測
定する場合は約15分間)を経て、毛管2及び通気
管1の弁を開き管内圧を大気圧とし、試料を自然
に流下させる。試料のメニスカスが上部測時標線
6から下部測時標線7まで通過する時間が電気的
に測定される。なお、試料メニスカスの測時標線
間通過の検知と、その流下時間の測定は、上部測
時標線6の位置に取り付けた液面検出器で試料メ
ニスカスの通過が検知され、そこで発せられる電
気信号によりオートタイマーが始動され、下部測
時標線7の位置に取り付けた同様の液面検出器で
試料メニスカスの通過が検知された時に、そこで
発せられる電気信号によりオートタイマーが停止
され、試料の流下時間が自動的に測定される。測
定終了と同時に自動的に粘度計の洗浄が開始さ
れ、その後乾燥が行われる。 (発明が解決しようとする問題点) 従来の粘度計によるときは、静置時間中に試料
採取口から気泡が侵入した場合、侵入した気泡が
毛管側に入り、測時球の上部に滞留し、静置時間
を経て試料の自然流下工程に至り、実際に測定し
ようとする試料容量より気泡容量分だけ少ない量
の試料を測定する結果となる。したがつて、測時
標線間の流下時間は短かくなり、試料の実際の粘
度よりも低い値を標示する欠陥を露呈する。 本発明は、従来の粘度計の持つ以上のような問
題点を解消させ、試料採取口から気泡が入つても
容易にそれを通気管に導き、試料から分離させる
ことができ、かつ正確な動粘度を測定できるよう
にした粘度計を提供することを目的とする。 (問題を解決するための手段) この目的を達成させるために、本発明は次のよ
うな構成としている。すなわち、本発明による粘
度計は、気泡が試料採取口から侵入した場合、気
泡は粘度計内を必ず鉛直に浮上することに着目
し、通気管を試料採取口の鉛直上位置にし、下部
試料だめ球を分岐点として、毛管を枝状にするこ
とにより気泡の毛管への侵入を防ぐものである。 (作用) 本発明による粘度計の作用を第1図とともに説
明する。 恒温浴槽中に鉛直に固定した粘度計の試料採取
口4に、原油及び石油製品の試料を入れた容器を
下から試料を吸引し易いように浸す。ついで通気
管1を閉塞し、毛管2より減圧にて試料を上部試
料だめ球5の中間まで吸引し、毛管2を閉塞す
る。ここで試料の入つた容器を試料採取口4から
放し、試料全体が均一に所定温度に達するよう所
定時間静置する。粘度計中の試料は、上部試料だ
め球5の中間部より上方、すなわち試料メニスカ
スと弁との間の減圧空気によりバランスされた状
態となり、試料の自然流下を防いでいる。 例えば、この静置時間中に、試料採取口4から
空気が粘度計に入ることがあり、この侵入空気は
比較的大きな気泡となり、試料中を鉛直に浮上す
る。気泡が毛管2と通気管1の分岐部、すなわち
下部試料だめ球3に至つても、粘度計の内部直径
及び内部構造に若干の変化があろうとも、気泡は
常に鉛直上方に試料中を浮上し続ける。 本発明による粘度計は通気器管1が試料採取口
4に鉛直上に位置された構造となつているため、
上記の侵入した空気による気泡は鉛直に浮上し、
通気管1内の空気と一体になり、枝状に分かれた
毛管2内には侵入することはない。下部試料だめ
球3は浮上する気泡を通気管1へ誘導するような
形状に作成してあり、毛管2側へは流れないよう
な作用をする。 (実施例) 第1図は本発明の一実施例を示す図である。第
1図において通気管1は試料採取口4より鉛直な
位置にあり、毛管2は下部試料だめ球3部より分
岐して枝状とした位置にある。 静置期間中に試料採取口4より侵入した気泡は浮
上し、下部試料だめ球3部で通気管1へ自然に導
かれる。 次に動粘度の異なる3種類の潤滑油試料を本発
明による粘度計、従来の自動粘度測定装置用粘度
計及びJIS K2283で規定された手動式ウベローデ
型粘度計を用いて100℃に於ける動粘度を測定し
た実施例及び比較例を第1表に示す。 第1表における測定値を比較した結果、本発明
品と手動式のウベローデ型の測定値はほぼ
(Field of Industrial Application) The present invention relates to a viscometer for an automatic viscosity measuring device in a kinematic viscosity testing method for crude oil and petroleum products. (Prior art) As shown in Fig. 2, in a conventional viscometer for an automatic viscosity measuring device, a capillary tube 2 has a vertical trunk shape, and a vent tube 1 branching from a lower sample reservoir bulb 3 has a branch shape. It was composed of The kinematic viscosity of crude oil and petroleum products was measured using this glass capillary viscometer (hereinafter referred to as a viscometer) as follows. That is, the sample collection port 4 is immersed in the sample, the ventilation tube 1 is closed with a valve (electromagnetic valve), the sample is sucked from the capillary tube 2 to the middle of the upper sample reservoir bulb 5 by a vacuum aspirator, and the capillary tube 2 is closed with the valve. do. After a standing period of time (approximately 10 minutes when measuring at 40℃, approximately 15 minutes when measuring at 100℃), the valves of capillary tube 2 and ventilation tube 1 are opened to bring the pressure inside the tubes to atmospheric pressure, and the sample is allowed to cool naturally. Let it flow down. The time taken for the meniscus of the sample to pass from the upper time mark 6 to the lower time mark 7 is electrically measured. Note that the passage of the sample meniscus between the time gauge lines and the measurement of its flow time are carried out by detecting the passage of the sample meniscus with a liquid level detector installed at the position of the upper time gauge line 6, and using the electricity emitted there. The automatic timer is started by the signal, and when passage of the sample meniscus is detected by a similar liquid level detector installed at the lower time mark 7, the automatic timer is stopped by the electric signal emitted there, and the automatic timer is stopped. Flow time is automatically measured. Upon completion of the measurement, cleaning of the viscometer automatically begins, followed by drying. (Problem to be Solved by the Invention) When using a conventional viscometer, if air bubbles enter from the sample sampling port during the standing time, the intruding air bubbles enter the capillary side and stay at the top of the timing bulb. After a period of standing, the sample reaches a gravity flow step, resulting in a sample volume that is smaller than the actual sample volume to be measured by the bubble volume. Therefore, the flow time between time markers becomes shorter, exposing defects that indicate a lower value than the actual viscosity of the sample. The present invention solves the above-mentioned problems of conventional viscometers, and even if air bubbles enter the sample sampling port, they can be easily guided to the ventilation pipe and separated from the sample, and they can be moved accurately. An object of the present invention is to provide a viscometer capable of measuring viscosity. (Means for Solving the Problem) In order to achieve this object, the present invention has the following configuration. In other words, the viscometer according to the present invention focuses on the fact that when air bubbles enter through the sample sampling port, the bubbles always float vertically inside the viscometer. By using the bulb as a branching point and making the capillary tube branch-like, it prevents air bubbles from entering the capillary tube. (Function) The function of the viscometer according to the present invention will be explained with reference to FIG. A container containing a crude oil or petroleum product sample is immersed into the sampling port 4 of a viscometer vertically fixed in a thermostatic bath so that the sample can be easily sucked from below. Then, the ventilation tube 1 is closed, and the sample is sucked through the capillary tube 2 under reduced pressure to the middle of the upper sample reservoir bulb 5, and the capillary tube 2 is closed. At this point, the container containing the sample is released from the sample collection port 4 and left standing for a predetermined time so that the entire sample reaches a predetermined temperature uniformly. The sample in the viscometer is balanced by the reduced pressure air above the middle part of the upper sample holding bulb 5, that is, between the sample meniscus and the valve, thereby preventing the sample from flowing down naturally. For example, during this standing time, air may enter the viscometer from the sample sampling port 4, and this intruding air becomes relatively large bubbles that float vertically through the sample. Even if air bubbles reach the branch of capillary tube 2 and vent tube 1, that is, lower sample reservoir bulb 3, the air bubbles will always float vertically upward in the sample, even if there are slight changes in the internal diameter and internal structure of the viscometer. Continue to do so. Since the viscometer according to the present invention has a structure in which the aerator tube 1 is positioned vertically above the sample sampling port 4,
The bubbles caused by the above-mentioned intruding air float vertically,
It becomes one with the air in the ventilation pipe 1 and does not enter into the branched capillary tubes 2. The lower sample reservoir bulb 3 is shaped to guide floating bubbles to the ventilation tube 1, and acts to prevent them from flowing toward the capillary tube 2 side. (Example) FIG. 1 is a diagram showing an example of the present invention. In FIG. 1, the vent pipe 1 is located at a position perpendicular to the sample collection port 4, and the capillary tube 2 is located at a position branching from the lower sample reservoir bulb 3. Air bubbles that have entered through the sample collection port 4 during the standing period float to the surface and are naturally guided to the ventilation pipe 1 by the lower sample reservoir bulb 3 portion. Next, three types of lubricating oil samples with different kinematic viscosities were measured at 100°C using a viscometer according to the present invention, a conventional viscometer for automatic viscosity measuring equipment, and a manual Ubbelohde viscometer specified in JIS K2283. Table 1 shows examples and comparative examples in which viscosity was measured. As a result of comparing the measured values in Table 1, the measured values of the product of the present invention and the manual Ubbelohde type are approximately

【表】 注 * 試料中に気泡が入つたため異常値になつた

** *印の測定値を除いた平均値である。
一致している。従来品の測定値も手動式のウベロ
ーデ型と一致しているが、これは試料中に空気が
侵入した時の測定値を除いたものであり、当粘度
計が自動測定装置用のものであることから異常値
をそのまま報告してしまう恐れがあり、一致して
いるとは言い難い。 (発明の効果) 以上説明した通り、本発明の粘度計によれば、
原油及び石油製品の試料を粘度計に吸引し、所定
温度にするための静置期間中に試料採取口から空
気が気泡となつて侵入しても、枝分れした測定用
の毛管には入らず、鉛直に位置する通気管へ気泡
が浮上するため、粘度測定が誰でも正確に行うこ
とができるという効果がある。
[Table] Note * The abnormal value was due to air bubbles in the sample.
** This is the average value excluding the measured values marked with *.
Match. The measured values of the conventional product also match those of the manual Ubbelohde type, but this excludes the measured values when air enters the sample, and this viscometer is for automatic measuring devices. Therefore, there is a risk that abnormal values will be reported as they are, and it is difficult to say that they are consistent. (Effect of the invention) As explained above, according to the viscometer of the present invention,
Even if air enters the sample collection port in the form of bubbles during the standing period for drawing a sample of crude oil or petroleum products into a viscometer and bringing it to a specified temperature, it will not enter the branched measurement capillary. First, since the bubbles float to the vertically located vent pipe, anyone can measure the viscosity accurately.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明による粘度計の一例を示すため
の図、第2図は従来の粘度計を示す図である。 図中1は通気管、2は毛管、3は下部試料だめ
球、4は試料採取口、5は上部試料だめ球、6は
上部測時標線、7は下部測時標線、8は測時球で
ある。
FIG. 1 is a diagram showing an example of a viscometer according to the present invention, and FIG. 2 is a diagram showing a conventional viscometer. In the figure, 1 is a ventilation tube, 2 is a capillary tube, 3 is a lower sample reservoir bulb, 4 is a sample collection port, 5 is an upper sample reservoir bulb, 6 is an upper time gauge line, 7 is a lower time gauge line, and 8 is a time marker line. It is a time sphere.

Claims (1)

【特許請求の範囲】[Claims] 1 原油及び石油製品の動粘度をガラス製毛管式
粘度計を用いて測定する方法において、通気管1
を鉛直な幹とし、下部試料だめ球3より分岐した
毛管2を枝とした自動粘度測定装置用粘度計。
1 In a method for measuring the kinematic viscosity of crude oil and petroleum products using a glass capillary viscometer, the ventilation tube 1
A viscometer for an automatic viscosity measuring device with a vertical trunk and a capillary tube 2 branching from a lower sample holding bulb 3 as a branch.
JP25655684A 1984-12-06 1984-12-06 Viscometer for automatic viscosity measuring instrument Granted JPS61134643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25655684A JPS61134643A (en) 1984-12-06 1984-12-06 Viscometer for automatic viscosity measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25655684A JPS61134643A (en) 1984-12-06 1984-12-06 Viscometer for automatic viscosity measuring instrument

Publications (2)

Publication Number Publication Date
JPS61134643A JPS61134643A (en) 1986-06-21
JPH047827B2 true JPH047827B2 (en) 1992-02-13

Family

ID=17294278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25655684A Granted JPS61134643A (en) 1984-12-06 1984-12-06 Viscometer for automatic viscosity measuring instrument

Country Status (1)

Country Link
JP (1) JPS61134643A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6402703B1 (en) * 1997-08-28 2002-06-11 Visco Technologies, Inc. Dual riser/single capillary viscometer
CN102252942A (en) * 2010-05-20 2011-11-23 中国制浆造纸研究院 Viscosity measurement device

Also Published As

Publication number Publication date
JPS61134643A (en) 1986-06-21

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