WO2011127637A1 - 一种界面张力测试装置 - Google Patents

一种界面张力测试装置 Download PDF

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Publication number
WO2011127637A1
WO2011127637A1 PCT/CN2010/001981 CN2010001981W WO2011127637A1 WO 2011127637 A1 WO2011127637 A1 WO 2011127637A1 CN 2010001981 W CN2010001981 W CN 2010001981W WO 2011127637 A1 WO2011127637 A1 WO 2011127637A1
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Prior art keywords
sleeve
tube
sample
interfacial tension
cap
Prior art date
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Ceased
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PCT/CN2010/001981
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English (en)
French (fr)
Inventor
牟伯中
杨世忠
刘金峰
王浩
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East China University of Science and Technology
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East China University of Science and Technology
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Application filed by East China University of Science and Technology filed Critical East China University of Science and Technology
Publication of WO2011127637A1 publication Critical patent/WO2011127637A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
    • G01N13/02—Investigating surface tension of liquids

Definitions

  • the present invention relates to an instrument accessory for measuring interfacial tension, and more particularly to an interfacial tension testing device.
  • Interfacial tension is the basic data of fluid interface properties, and is an important parameter for the development, production and application of new products in the fields of petroleum, chemical industry, daily necessities, etc. It has very important theoretical and application value and has been widely used in oilfield development (third oil recovery). Evaluation of surfactants, development of new products such as detergents and pesticides.
  • the liquid-liquid interfacial tension parameter is currently widely tested by the rotary drop method. In the rotary drop test, there are two main types of existing test devices: one is a plexiglass tube, and the other is a quartz tube.
  • the plexiglass tube is composed of a tube body and a tube cap, and the tube body and the tube cap are screwed, and the gasket is sealed therebetween.
  • the quartz tube is composed of a tube bottom sleeve, a quartz tube body and a quartz tube mouth sleeve and a tube cap.
  • the sealed end of the quartz tube body is glued and fixed to the bottom sleeve, and the open end of the quartz tube body is glued and fixed to the tube mouth sleeve, and the tube cap is threaded and
  • the nozzle sleeve is connected and sealed with a gasket.
  • the interfacial tension meter motor directly drives the plexiglass tube to rotate at a high speed or rotates the quartz tube at a high speed through the bottom sleeve of the tube, and the entire torque is directly from the plexiglass tube or quartz.
  • the tube body is responsible for the breakage of the quartz tube or the plexiglass tube; (2) When the test liquid is cloudy (if emulsification occurs), the test object in the plexiglass tube or the quartz tube is unclear, affecting the observation and measurement; (3) When using, the cap is capped on the pipe body (plexiglass tube) or the tube sleeve (quartz tube), and the rotary thread connection is fastened, which is easy to introduce air bubbles, which affects the measurement; (4) The gasket is not easily removed when it is embedded in the cap Cleaning. At the same time, plexiglass tubes are also incapable of withstanding temperatures above 60 °C. The long-term wear of plexiglass threads can cause problems such as inability to tightly fix or leak liquid, and cannot be washed with an organic solvent such as chloroform.
  • An object of the present invention is to provide an interface tension test apparatus which is structurally strong, flexible to install, and convenient to use in order to overcome the problems of the prior art described above.
  • an interface tension testing device comprises a sample tube for loading a sample, characterized in that it further comprises a sleeve provided with a viewing window, the sample tube being disposed in the sleeve and being closed and fixed.
  • the sleeve includes a sleeve body and a sleeve cap, and the sleeve body and the sleeve cap are screwed.
  • the sleeve body is a cylindrical structural member, and the inner cavity of the sleeve body is matched with the sample tube, and the front end of the sleeve body is a closed end of a solid cylindrical body with a reduced diameter, and two long trough shapes are symmetrically arranged in the middle of the sleeve body.
  • the window, the rear end of the sleeve is an open end and is provided with external threads for threaded connection with the cap.
  • the inner end of the sleeve is provided with an inner step formed by expanding the diameter, and a sealing gasket is disposed on the inner step.
  • the inner and outer sides of the sealing gasket are respectively sealedly connected with the sample tube and the cap.
  • the cap is provided with internal threads for threaded connection to the sleeve, and an axial through hole for injecting or extracting the sample is provided on the cap.
  • the sample tube is glued to the sleeve of the sleeve.
  • the sleeve tail portion is provided with a small hole radially penetrating the pipe wall, and the inner wall of the sleeve is annularly cut with a guide groove corresponding to the small hole, and the guide groove is connected with the small hole; the sample tube is movablely embedded In the sleeve of the sleeve.
  • the torque generated by the high-speed rotation of the instrument motor is borne by the sleeve, which protects the sample tube.
  • the sample tube can be processed with low torsion resistance material, which is not easy to break and saves the use cost;
  • the tube sleeve drives the sample tube to rotate at a high speed, and the observation window on the tube sleeve rotates at a high speed to have a stroboscopic effect, so that the sample observation object is more clear;
  • the sample tube is embedded in the sleeve, because the sample tube is shorter than the sleeve, and the tail portion of the sleeve is processed to form a gasket chamber, which facilitates the loading of the sample and the capping gasket, and prevents the introduction of bubbles;
  • the sample tube and the tube sleeve can be glued and fixed, used for a long time, or not fixed, easy to install, disassemble and clean the sample tube;
  • FIG. 1 is a cross-sectional structural view of an interfacial tension testing device of the present invention
  • Figure 2 is a front elevational view showing the casing of the present invention
  • Figure 3 is a cross-sectional structural view of the casing shown in Figure 2;
  • Figure 4 is a cross-sectional structural view of the cap of the present invention
  • Fig. 5 is a cross-sectional structural view showing another embodiment of the present invention.
  • the interfacial tension testing device of the present invention comprises a sample tube 1 for loading a sample and a sleeve 2 provided with a viewing window, a sample tube 1 is disposed in the sleeve 2 and is closed and fixed.
  • the sleeve 2 includes a sleeve body 21 and a sleeve cap 22, and the sleeve body 21 and the sleeve cap 22 are screwed.
  • the sleeve body 21 of the present invention is a cylindrical structural member, and the inner cavity 211 is matched with the sample tube, and the front end of the sleeve body is a solid cylindrical closed end 212 with a reduced diameter.
  • the central portion of the sleeve is symmetrically provided with two long trough-shaped viewing windows 213, the rear end of the sleeve is an open end 214 and is provided with external threads 215 for threaded connection with the cap
  • An inner step 216 formed by a simple expanded diameter is disposed in the tube at the rear end of the sleeve body.
  • the sealing gasket 3 is disposed on the inner step, and the inner and outer sides of the gasket 3 are closely connected to the sample tube 1 and the cap 22, respectively.
  • the cap 22 of the present invention is provided with an internal thread 221 for screwing with the sleeve, and an axial through hole 222 for injecting or extracting a sample is provided on the cap.
  • the interfacial tension testing device of the present invention can be assembled in two ways, one is as shown in Fig. 1, and the sample tube 1 is glued to the sleeve body 21 of the sleeve. As shown in Fig. 5, the sample tube 1 is not glued to the sleeve 21 of the sleeve, but is instead embedded in the sleeve of the sleeve, in which case a radial direction is provided at the tail of the sleeve.
  • the through hole 217 is penetrated, and a guide groove (not shown) is cut around the inner wall of the sleeve corresponding to the small hole, and the guide groove is communicated with the small hole. In this way, the sample liquid that overflows when loading the sample, capping the gasket or cap is diverted to avoid contamination of the instrument.

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  • 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)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Description

一种界面张力测试装置 技术领域 本发明涉及一种测量界面张力的仪器配件， 尤其涉及一种界面张力测试装 置。
背景技术 界面张力是流体界面性质的基本数据， 是石油、 化工、 日用品等领域新产 品开发、 生产应用的重要参数， 具有非常重要的理论和应用价值， 已经广泛应 用于油田开发（三次采油）、表面活性剂评价、洗涤剂及农药等新产品开发等领 域。 液 -液界面张力参数目前广泛采用旋转滴法测试。 在旋转滴法测试中， 现有 的测试装置主要有两类： 一类为有机玻璃管， 一类为石英管。 有机玻璃管由管 体和管帽两部分组成， 管体和管帽用螺纹连接， 其间用垫片密封。 石英管由管 底套、 石英管体和石英管口套及管帽组成， 石英管体密封端与底套胶粘固定， 石英管体开口端与管口套胶粘固定， 管帽通过螺纹与管口套连接， 其间用垫片 密封。在测量过程中， 发现上述两种产品都存在以下缺陷： （1) 界面张力仪马达 直接带动有机玻璃管高速转动或通过管底套带动石英管高速转动， 整个扭力都 直接由有机玻璃管或石英管体承担， 容易造成石英管或有机玻璃管扭断破损； (2) 当测试液体浑浊（如发生乳化）时， 有机玻璃管或石英管中的测试对象不清 晰， 影响观察测量； （3) 使用时管帽加盖在管体（有机玻璃管）或管口套（石英 管）上， 旋转螺纹连接紧固， 容易引入气泡， 影响测量； （4) 垫片嵌入管帽中不 容易取出及清洗。 同时， 有机玻璃管还存在不能耐受 60°C以上温度， 有机玻璃 螺紋长期使用磨损会引起无法紧密固定或漏液， 不能采用强溶解力的有机溶剂 如氯仿洗涤等问题。
发明内容 本发明的目的， 就是为了克服上述现有技术存在的问题， 提供一种结构坚 固、 安装灵活、 使用方便的界面张力测试装置。
为了达到上述目的，本发明采用了以下技术方案：一种界面张力测试装置， 包括用于装载样品的样品管， 其特点是， 还包括一个设有观察窗口的管套， 所 述的样品管设置在管套内并被封闭固定。
所述的管套包括套体和套帽， 套体和套帽螺纹连接。
所述的套体为圆筒形结构件， 套体内设有与样品管适配的内腔， 套体前端 为缩径的实心圆柱体封闭端， 套体中部对称设有两条长槽形观察窗口， 套体后 端为开口端并设有用于与套帽螺纹连接的外螺纹。
所述的套体后端的管内设有一圈扩径形成的内台阶， 一密封垫片设置在该 内台阶上， 密封垫片的内外两侧分别与所述的样品管和套帽密封相连。
所述的套帽设有用于与套体螺纹连接的内螺纹， 并在帽盖上设有一个用于 注入或抽取样品的轴向通孔。
所述的样品管与管套的套体胶粘相连。
所述的套体尾部设有径向贯通管壁的小孔， 套体内壁在对应于小孔处环切 有一圈导流槽， 导流槽与小孔连通； 所述的样品管活动嵌装在管套的套体内。
本发明的界面张力测试装置由于采用了以上技术方案， 使其与现有技术相 比， 具有以下的优点和特点-
1、仪器马达高速转动产生的扭力由管套承担， 保护了样品管， 同时使得样 品管可采用耐扭力低的材料加工， 不易折断， 节约了使用成本；
2、管套带动样品管高速转动， 管套上的观察窗高速转动具有频闪效应， 使 样品观察对象更加清晰；
3、样品管嵌入管套中， 由于样品管比管套短， 同时管套体后段尾部加工形 成垫片腔室， 使加载样品和加盖垫片操作方便， 还可防止气泡引入；
4、样品管和管套既可以胶粘固定，长久使用，也可不胶粘固定，方便安装、 拆卸、 清洗样品管；
5、在样品管和管套不胶粘固定的情况下，套体后段靠近螺紋部加工有小孔 及对应内壁处加工有环形导流槽， 可将在加载样品、 加盖密封垫片或套帽时溢 出的样品液体导流出来， 避免污染仪器。 附图说明
图 1是本发明界面张力测试装置的剖视结构示意图; 图 2是本发明中的套体的正视结构示意图；
图 3是图 2所示套体的剖视结构示意图；
图 4是本发明中的套帽的剖视结构示意图
图 5是本发明另一实施例的剖视结构示意图。 具体实施方式 参见图 1， 配合参见图 2、 图 3、 图 4、 图 5， 本发明界面张力测试装置， 包括用于装载样品的样品管 1 以及一个设有观察窗口的管套 2， 样品管 1设置 在管套 2内并被封闭固定， 管套 2包括套体 21和套帽 22， 套体 21和套帽 22 螺紋连接。
配合参见图 2、 图 3， 本发明中的套体 21为圆筒形结构件， 套体内设有与 样品管适配的内腔 211 ,套体前端为缩径的实心圆柱体封闭端 212，用于在使用 时与旋转马达的卡锁装置连接； 套体中部对称设有两条长槽形观察窗口 213， 套体后端为开口端 214并设有用于与套帽螺紋连接的外螺纹 215， 在套体后端 的管内设有一簡扩径形成的内台阶 216, —密封垫片 3设置在该内台阶上， 密 封垫片 3的内外两侧分别与样品管 1和套帽 22紧密相连。
配合参见图 4,本发明中的套帽 22设有用于与套体螺纹连接的内螺纹 221， 并在帽盖上设有一个用于注入或抽取样品的轴向通孔 222。
本发明界面张力测试装置在组装时可以采用两种方式， 一种是如图 1所示 的方式， 样品管 1与管套的套体 21胶粘相连。 另一种如图 5所示， 样品管 1 与管套的套体 21不胶粘相连， 而是活动嵌装在管套的套体内， 在这种情况下， 要在套体尾部设置径向贯通的小孔 217， 并在套体内壁对应于小孔处环切一圈 导流槽（未图示出来）， 并让导流槽与小孔连通。 这样， 可将在加载样品、 加盖 密封垫片或套帽时溢出的样品液体导流出来， 避免污染仪器。

Claims

权 利 要 求
1、一种界面张力测试装置， 包括用于装载样品的样品管， 其特征在于： 还 包括一个设有观察窗口的管套， 所述的样品管设置在管套内并被封闭固定。
2、如权利要求 1所述的界面张力测试装置， 其特征在于： 所述的管套包括 套体和套帽， 套体和套帽螺纹连接。
3、如权利要求 2所述的界面张力测试装置， 其特征在于： 所述的套体为圆 筒形结构件， 套体内设有与样品管适配的内腔， 套体前端为缩径的实心圆柱体 封闭端， 套体中部对称设有两条长槽形观察窗口， 套体后端为开口端并设有用 于与套帽螺纹连接的外螺紋。
4、如权利要求 1或 2所述的界面张力测试装置， 其特征在于： 所述的套体 后端的管内设有一圈扩径形成的内台阶， 一密封垫片设置在该内台阶上， 密封 垫片的内外两侧分别与所述的样品管和套帽密封相连。
5、如权利要求 2所述的界面张力测试装置， 其特征在于： 所述的套帽设有 用于与套体螺纹连接的内螺纹， 并在帽盖上设有一个用于注入或抽取样品的轴 向通孔。
6、如权利要求 1或 2所述的界面张力测试装置， 其特征在于： 所述的样品 管与管套的套体胶粘相连。
7、如权利要求 1或 2所述的界面张力测试装置， 其特征在于： 所述的套体 尾部设有径向贯通管壁的小孔， 套体内壁在对应于小孔处环切有一圈导流槽， 导流槽与小孔连通； 所述的样品管活动嵌装在管套的套体内。
PCT/CN2010/001981 2010-04-16 2010-12-07 一种界面张力测试装置 Ceased WO2011127637A1 (zh)

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CN2010101491017A CN101813600B (zh) 2010-04-16 2010-04-16 一种界面张力测试装置
CN201010149101.7 2010-04-16

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CN101813600B (zh) * 2010-04-16 2012-05-30 华东理工大学 一种界面张力测试装置
CN110333176A (zh) * 2019-08-02 2019-10-15 柳州汉西鸣建材发展有限公司 一种流量可控的测量声学流阻的装置及其测量方法

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US4076023A (en) * 1975-08-01 1978-02-28 Erika, Inc. Resealable device for repeated access to conduit lumens
SU1363025A1 (ru) * 1986-05-13 1987-12-30 Физико-механический институт им.Г.В.Карпенко Образец дл испытани материалов на раст жение
CN1183260A (zh) * 1996-11-25 1998-06-03 斯蒂芬·C·沃德罗 带整体密封装置的夹持血样毛细管的管套
CN2738240Y (zh) * 2004-09-17 2005-11-02 王雷 流体表界面张力测量用离心管
CN101813600A (zh) * 2010-04-16 2010-08-25 华东理工大学 一种界面张力测试装置

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