CN202195999U - Device for measuring height difference between liquid levels - Google Patents
Device for measuring height difference between liquid levels Download PDFInfo
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- CN202195999U CN202195999U CN2011202509380U CN201120250938U CN202195999U CN 202195999 U CN202195999 U CN 202195999U CN 2011202509380 U CN2011202509380 U CN 2011202509380U CN 201120250938 U CN201120250938 U CN 201120250938U CN 202195999 U CN202195999 U CN 202195999U
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- liquid level
- liquid
- beaker
- level difference
- difference measurements
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Abstract
The utility model relates to a device for measuring height difference between liquid levels. The device comprises a bracket platform and a U-shaped tube connected on the bracket platform, and is characterized in that liquid level mark plates for measuring the liquid levels are respectively arranged on two sides of the bracket platform; the vertical sections of the U-shaped tube are connected with the liquid level mark plates; and the lower part of the U-shaped tube is placed in a beaker on the bracket platform and fully filled with heat conducting liquid. The utility model has the characteristics of high measurement precision, little to-be-tested sample, low measurement cost, convenience and speediness in filed measurement and the like, can be widely applied to mining floatation, oil exploitation, textile printing and dyeing, pesticide process, photosensitive film production, and paint formulation, as well as waterproofing, washing, healthy human body electrolyte determination and other fields.
Description
Technical field
The utility model relates to a kind of liquid level difference measurements device, is applied to measure in the method for liquid surface tension coefficient.
Background technology
Exist apparatus expensive, little acting force measurement result very easily to receive various interference to the method for existing measurement liquid surface tension coefficient and have a strong impact on problems such as measuring accuracy, probe into a kind of new method of measuring liquid surface tension coefficient.Contacting directly of the physical property of surface tension coefficient and contact angle and liquid through research liquid; Employing comprises that the localized forces balance method of liquid gravity, surface tension of liquid combines Laplace's equation; And, measure the surface tension coefficient of liquid with MATLAB Flame Image Process and LABVIEW virtual instrument system.
The surface tension of liquid is meant the size of suffered pulling force on the unit length of liquid free face.The size of surface tension of liquid is represented with surface tension coefficient usually.Because surface tension coefficient is relevant with the character of liquid, the surface tension coefficient of different liquids has very big difference, so at aspects such as the physical property of liquid, liquid conveying, medical treatment, must accurately measure surface tension coefficient.In addition, the measurement of liquid surface tension coefficient also is one of elementary item of Physical Experiment.
At present, the general surface tension that adopts the method that pulls to measure liquid in laboratory; Employing pulls the surface tension coefficient that method is measured liquid, and its measurement result is often not really desirable, and error is bigger, and measurement result is disperseed very much.The main cause that causes measuring error is that the process that pulls is difficult to accurate assurance (such as factors such as the speed of pulling), owing to all adopt Hall element to measure very faint pulling force basically, so the error that manual operation factor etc. produces is bigger; Cause the uncertainty of measurement result, produced measuring error; Can't draw comparatively accurate values.
Summary of the invention
The purpose of the utility model is to provide a kind of liquid level difference measurements device, and this device is applied to the measurement to the liquid level difference in liquid surface tension coefficient early stage, and it is low effectively to solve the current device measuring accuracy, complex equipments, defective such as error is big.
The utility model is characterised in that: a kind of liquid level difference measurements device; Comprise rack platform and be connected the U-shaped pipe on the rack platform; It is characterized in that: said rack platform both sides are respectively equipped with in order to measure the liquid level marking plate of liquid level; Be connected with a vertical section of U-shaped pipe on the said liquid level marking plate respectively, the bottom of said U-shaped pipe places and is positioned at the beaker of filling conductive fluid on the rack platform.
The utility model measuring accuracy is high, the testing sample amount is few, it is with low cost to measure, be convenient to characteristics such as on-site rapid measurement, and fields such as flotation, oil exploitation, textile printing and dyeing, pesticide processing, sensitive film production, paint formulation and waterproof, washing, healthy human body electrolytes determined can be widely used in digging up mine.
Description of drawings
Fig. 1 is the organigram of the utility model embodiment.
Fig. 2 is the use principle figure of the utility model embodiment.
Embodiment
For letting the above-mentioned feature and advantage of the utility model can be more obviously understandable, hereinafter is special lifts embodiment, and cooperates appended graphic elaborating as follows.
With reference to figure 1; A kind of liquid level difference measurements device; Comprise rack platform 1 and be connected the U-shaped pipe 2 on the rack platform 1; Said rack platform 1 both sides are respectively equipped with in order to measure the liquid level marking plate 3 of liquid level, are connected with a vertical section of U-shaped pipe 2 on the said liquid level marking plate 3 respectively, and the bottom of said U-shaped pipe 2 places and is positioned at the beaker 4 of filling conductive fluid on the rack platform 1.
Above-mentioned U-shaped pipe 2 comprises the glass tube and the rubber tube 2-3 that is connected two glass tubes of two sections different tube diameters.
The glass tube of above-mentioned two sections different tube diameters is respectively simple glass pipe 2-1 and glass capillary 2-2.
The bottom of above-mentioned beaker 4 is provided with in order to give the Temperature controlled heater 5 of beaker heat supply, is provided with the thermo detector 6 that is connected in Temperature controlled heater 5 in the said beaker 4.
Above-mentioned conductive fluid is a water.
The measuring principle of the utility model is: as shown in Figure 2; The internal diameter of two VERTICAL TUBE of one U type glass tube is respectively
,
; Testing liquid is poured in this U type pipe; When liquid is static; The spill water surface in the U type glass tube can regard as near-sightedly radius for
, the hemisphere face of
; According to the Laplace formula under the curved liquid surface:
In formula (1) and (2),
P A ,
P B Be respectively the pressure that liquid level A, B are ordered,
P O Be atmospheric pressure, θ is the contact angle of liquid and glass tube, and α is the surface tension coefficient of liquid.Can try to achieve the pressure at C point place under the liquid level
P C For:
P C =?
P B +ρ
gh ?（3）
(3) in, ρ is a density of liquid, and g is local acceleration of gravity, and h is the difference in height of liquid two intraluminal fluid faces when static.According to hydrostatics, when liquid reached static, the C point was identical with the A point pressure of same level face under the intraluminal fluid face, that is:
P C ?=?P A （4）
The surface tension coefficient α that can be tried to achieve liquid by formula (1)-Shi (4) is:
Formula (5) is utilizes U type pipe method to measure the empirical formula of liquid surface tension coefficient; It shows as long as measure the difference in height h of two liquid levels; The diameter of two VERTICAL TUBE
,
and contact angle θ can try to achieve the surface tension coefficient α of liquid.
Contact angle can be obtained through following two kinds of methods: one of which is profile graphical analysis and computing method thereof; It two is a weight method.Because weight method need be utilized expensive surveying instruments such as wetting balance or osmosis contact angle appearance usually, therefore application is the most extensive at present, the contact angle measured value is the most direct and accuracy is higher still profile graphical analysis and computing method thereof.
The above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model.
Claims (5)
1. liquid level difference measurements device; Comprise rack platform and be connected the U-shaped pipe on the rack platform; It is characterized in that: said rack platform both sides are respectively equipped with in order to measure the liquid level marking plate of liquid level; Be connected with a vertical section of U-shaped pipe on the said liquid level marking plate respectively, the bottom of said U-shaped pipe places and is positioned at the beaker of filling conductive fluid on the rack platform.
2. liquid level difference measurements device according to claim 1 is characterized in that: said U-shaped pipe comprises the glass tube and the rubber tube that is connected two glass tubes of two sections different tube diameters.
3. liquid level difference measurements device according to claim 1 and 2, it is characterized in that: the glass tube of said two sections different tube diameters is respectively simple glass pipe and glass capillary.
4. liquid level difference measurements device according to claim 1 is characterized in that: the bottom of said beaker is provided with in order to give the Temperature controlled heater of beaker heat supply, is provided with the thermo detector that is connected in Temperature controlled heater in the said beaker.
5. liquid level difference measurements device according to claim 1 is characterized in that: said conductive fluid is a water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202509380U CN202195999U (en) | 2011-07-16 | 2011-07-16 | Device for measuring height difference between liquid levels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202509380U CN202195999U (en) | 2011-07-16 | 2011-07-16 | Device for measuring height difference between liquid levels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202195999U true CN202195999U (en) | 2012-04-18 |
Family
ID=45950902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202509380U Expired - Fee Related CN202195999U (en) | 2011-07-16 | 2011-07-16 | Device for measuring height difference between liquid levels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202195999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111904257A (en) * | 2020-06-28 | 2020-11-10 | 北京栗子树科技有限公司 | Temperature-controlled cooking pot and liquid viscosity detection method |
-
2011
- 2011-07-16 CN CN2011202509380U patent/CN202195999U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111904257A (en) * | 2020-06-28 | 2020-11-10 | 北京栗子树科技有限公司 | Temperature-controlled cooking pot and liquid viscosity detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20150716 |
|
| EXPY | Termination of patent right or utility model |