CN1060571C - Method for determinating solidifying point of liquid and device thereof - Google Patents
Method for determinating solidifying point of liquid and device thereof Download PDFInfo
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- CN1060571C CN1060571C CN 96103769 CN96103769A CN1060571C CN 1060571 C CN1060571 C CN 1060571C CN 96103769 CN96103769 CN 96103769 CN 96103769 A CN96103769 A CN 96103769A CN 1060571 C CN1060571 C CN 1060571C
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- 239000007788 liquid Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 11
- 239000003921 oil Substances 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000008014 freezing Effects 0.000 abstract 2
- 238000007710 freezing Methods 0.000 abstract 2
- 239000000047 product Substances 0.000 description 8
- 238000002834 transmittance Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002283 diesel fuel Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
本发明公开一种用于测定液体，特别是如油品类的有机液体的凝固点的装置。本发明的原理是将被测液体置于透光材料制成的容器内，在测定被测液体温度变化的同时测定透过被测液体的光强度的变化情况，根据所测定透过被测液体的光线强度的改变量确定被测液体的凝固点。本发明的装置是在冷阱中设有用透光材料制成的盛放被测液体的容器和温度测量传感装置，所述的容器外设有光源和用于接受由光源发出通过所述的容器和容器内的液体的光的光敏元件所组成的测定系统。
The invention discloses a device for measuring the freezing point of liquids, especially organic liquids such as oils. The principle of the present invention is to place the measured liquid in a container made of a light-transmitting material, measure the change of the light intensity passing through the measured liquid while measuring the temperature change of the measured liquid, and The amount of change in light intensity determines the freezing point of the measured liquid. The device of the present invention is provided with a container made of light-transmitting material for containing the liquid to be measured and a temperature measurement sensor device in the cold trap. A measurement system consisting of a photosensitive element for the light of the container and the liquid in the container.
Description
The present invention relates to a kind of liquid that is used to measure, particularly as the device of the solidifying point of the organic liquid of oil product class.Cold-trap is arranged among the present invention and be located at the cold-trap interior container that holds fluid to be measured and temperature element and temperature measurement system etc.
The kryoscopy of oil product now all adopts mechanical type to measure, promptly in cooling procedure, change container position or fluid to be measured is carried out disturbance, observe the variation of the mobile or disturbance situation of oil product in the container, the equipment that matches with aforementioned assay method is the mechanism of tilting to fill the cold-trap of sampling receptacle or be provided with the realization disturbed sample in cold-trap.As the pour point measurement instrument of making by Jinshi City, Hunan petrochemical complex instrument plant.The inclination that prior art need not stopped when measuring the liquid solidifying point fills the container of sample or fluid to be measured is carried out disturbance, this will influence solidifying of sample, therefore can not measure the solidifying point of sample exactly, measured data error is bigger, and waste time and energy when carrying out the liquid kryoscopy with prior art, measure a sample and need tens of minutes clock times approximately.For overcoming the deficiencies in the prior art, China's utility model patent 92208679.6 discloses a kind of analyser that utilizes the ticker moving situation of measuring in the cooling liquid to measure the diesel oil solidifying point, but the measuring principle of this device is consistent with method and prior art, so its measured result also can not be accurately.
The purpose of this invention is to provide a kind of novel liquid measuring apparatus for solidification point, this device can accurately be measured the solidifying point of liquid, and can improve finding speed, reduces labor intensity.
Principle of the present invention is that fluid to be measured is placed in the container that light transmissive material makes, when measuring the fluid to be measured temperature variation, measure the situation of change of the light intensity that sees through fluid to be measured, determine the solidifying point of fluid to be measured according to the change amount of the measure light intensity that sees through fluid to be measured.
Device of the present invention is to be provided with container and the temperature survey sensing element that holds fluid to be measured in cold-trap, used temperature measurement system is identical with prior art, described container is made by light transmissive material, be provided with light source and being used to and accept to send the mensuration system that the light activated element of the light by the liquid in described container and the container is formed by light source outside described container, described light activated element and outside display circuit are coupled.
Container in the device of the present invention can be a test tube or one section pipeline, or its two ends are provided with the pipeline of valve, or wherein has the test tube of the spherical part of outside protrusion, or its two ends are provided with the pipeline that valve wherein has outside protrusion spherical part.In described container, can be provided with temperature element.Light source of the present invention is infrarede emitting diode preferably, and described light activated element is for accepting the light activated element of infrared light.
Principle of the present invention and device build on the following experiment basis: liquid its transmittance in cooling procedure will change, and obvious variation will take place the change rate of its transmittance when liquid is crossed cold generation phase transformation.Method of the present invention be by measure liquid in phase transition process in the change of certain physical quantity realize measuring the purpose of liquid solidifying point, this is different from prior art (prior art only is to measure by the The apparent phenomenon of observing the change of liquid flow or disturbance situation) fully.Because the present invention does not influence the process of setting of liquid in mensuration, also, can reflect the temperature of measured object truly owing in the container of placing fluid to be measured, be provided with temperature element in the present invention, therefore mensuration precision of the present invention is higher than prior art far away.The present invention can also alleviate the mensuration working strength greatly in addition, raises the efficiency, and can realize on-line determination or automatic mensuration.
Description of drawings
Fig. 1 is a theory diagram of the present invention
Fig. 2 is the electrical schematic diagram of one embodiment of the present of invention
Fig. 3 is the electrical schematic diagram of an alternative embodiment of the invention
Fig. 4 is the embodiment of a kind of sample container of the present invention
Fig. 5 utilizes the present invention to measure the measured curve of 14# diesel oil
Fig. 6 utilizes the present invention to measure the measured curve of 6# lubricating oil
The present invention is described with reference to the accompanying drawings as follows:
The ultimate principle of device of the present invention is seen Fig. 1, and wherein (1) is chiller, and the effect by (1) makes cold-trap (4) cooling.In cold-trap (4), establish the container (2) and the temperature-sensing element (3) that hold fluid to be measured, wherein container (2) is made by light transmissive material, difform container constitutes different embodiments of the invention, for example it can be a test tube, it also can be one section pipeline, or one section its two ends are provided with the pipeline of valve, its xsect can be a rectangle, also can be circular, test tube or its two ends that container of the present invention (2) is preferably the spherical part that wherein has outside protrusion be provided with the pipeline that valve wherein has outside protrusion spherical part.Outside container (2), be provided with light source (8) and be used to accept send and see through the light activated element (9) of the light of container and liquid in container by light source, (5) are computer data processing system among Fig. 1, (6) be display circuit, after the measured signal of light activated element (9) is sent into to computer data processing system (5) processing, send into the related parameter that has that display circuit (6) can demonstrate measured transmittance again.(6) among Fig. 1, it can be by single-chip microcomputer, also can be data processing and the display system that is made of microcomputer and printer.(7) among Fig. 1 are multiple power supplies, are used for providing power supply to whole device.Also can directly send into display circuit (6) through the measured signal of light activated element (9) among the present invention and demonstrate measured parameter.
Fig. 2 provides one embodiment of the present of invention, and wherein (11) are cold-traps.Be equipped with one section conduct and hold fluid to be measured in cold-trap (11), its two ends have the transparent glass tube (14) of valve (12) and (13) and the measuring system of being made up of light emitting diode (15), phototransistor (16).Glass tube (14) is built-in with unshowned temperature element in Fig. 2.E is a power supply among Fig. 2, and resistance that links to each other with light emitting diode (15) and the resistance that links to each other with phototransistor (16) and microampere meter (17) constitute the display circuit of measurement parameter.Intercept fluid to be measured in glass tube (14) by opening/shutting valve (12) and (13) during the present embodiment actual measurement, and make cold-trap (11) begin cooling by starting chiller, to the measuring system power supply, the light of light emitting diode (15) emission is received by phototransistor (16) after the fluid to be measured transmission simultaneously.Decline with condenser temperature, liquid in the pipe (14) turns cold gradually and begins and solidifies, this moment, the transmittance of liquid also changed, the received light signal of phototransistor (16) also changes thereupon, measured parameter shows by microampere meter (17), the data that microampere meter (17) is shown and through the temperature data that temperature element records retouch in get final product on the coordinate paper descend with temperature funtcional relationship between its transmittance and temperature of fluid to be measured, and can obtain its solidifying point accurately.
Fig. 3 is the electrical principle synoptic diagram of an alternative embodiment of the invention, the measured signal of phototransistor wherein (20), and the measured signal of temperature measuring circuit (23) is coupled with the input system of microcomputer (22) by amplifier (24), (25) and analog to digital conversion circuit (26), (27), by microcomputer (22) measured data are carried out computing and demonstration, and can print measured result by peripheral hardware printer (28).
Fig. 4 is a kind of embodiment that contains the container of tested sample among the present invention, it is the structure that is provided with the spherical part that has outside protrusion in Fig. 4 in the middle of the pipeline [annotate: valve does not draw] that is provided with valve at one section its two ends, the mensuration system that is made of light source and light activated element in device should place the spherical portion office of outside protrusion, this structure is because spherical evagination part can produce the focussing force of light, can improve the measurement sensitivity of device, relevant experimental result all shows this point.
Light source among the present invention is when adopting infrared light supply, and the light activated element that is adopted can have best mensuration effect for the light activated element that can accept infrared light.
Adopt the device of Fig. 2, container wherein is a structure shown in Figure 4, and used light source is an infrared light supply, and 14# diesel oil and 6# lubricating oil are surveyed, and gained is measured curve referring to Fig. 5 and Fig. 6.
The transmittance of tested oil product descended with temperature when temperature was 8～4 ℃ as seen from Figure 5 more significantly change, and the solidifying point that this oil product is measured with prior art is 5 ℃.
Be lower than-4 when spending when temperature as seen from Figure 6, the transmittance of tested oil product descends to having more significantly with temperature and changes, and the solidifying point that this oil product is measured with prior art is-11 ℃.
When measuring other oil product, organic solution etc. and descend with temperature with the present invention there be and the same or analogous result of Fig. 5, Fig. 6 the variation of its transmittance.
Claims (8)
1, the determinator of liquid solidifying point, by cold-trap be located at constituting in the cold-trap by the container that holds fluid to be measured and temperature survey sensing element and temperature measurement system, it is characterized in that described container is one section pipeline that light transmissive material is made, be provided with light source and being used to and accept to send the mensuration system that the light activated element of the light by the liquid in described container and the container is formed by light source outside described container, described light activated element and display circuit are coupled.
2, determinator according to claim 1 is characterized in that described container is a test tube.
3, determinator according to claim 1 is characterized in that described container is the pipeline that one section its two ends is provided with valve.
4, determinator according to claim 1 is characterized in that described container is for wherein having the test tube to the evagination spherical part.
5, determinator according to claim 1 is characterized in that described container is provided with the pipeline that valve wherein has spherical outside projection for its two ends.
6, according to claim 1 or 2 or 3 or 4 or 5 described determinators, it is characterized in that described light source is an infrarede emitting diode, described light activated element is for accepting the light activated element of infrared light.
7, determinator according to claim 6 is characterized in that being provided with temperature element in the described container.
8, determinator according to claim 7 is characterized in that the measured signal of temp measuring system and mensuration system input mould/number conversion circuit after amplifier is handled of being made up of light activated element, and computer data processing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96103769 CN1060571C (en) | 1996-04-09 | 1996-04-09 | Method for determinating solidifying point of liquid and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96103769 CN1060571C (en) | 1996-04-09 | 1996-04-09 | Method for determinating solidifying point of liquid and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1162117A CN1162117A (en) | 1997-10-15 |
| CN1060571C true CN1060571C (en) | 2001-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96103769 Expired - Fee Related CN1060571C (en) | 1996-04-09 | 1996-04-09 | Method for determinating solidifying point of liquid and device thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN1060571C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385239C (en) * | 2001-12-25 | 2008-04-30 | 尹林 | Electromagnetic pressure impulse on-line oil product solidifying point testing method |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661934A (en) * | 2012-05-24 | 2012-09-12 | 苏州大学 | Device and method thereof for rapidly detecting swill-cooked dirty oil |
| CN104374748A (en) * | 2014-11-03 | 2015-02-25 | 广州市浪奇实业股份有限公司 | Method for measuring freezing points of perfumes, essential oil and composite essential oil |
| CN105954315A (en) * | 2016-05-03 | 2016-09-21 | 西安电子科技大学 | Method for determining phase transition temperature of two-component liposome |
| CN108593701A (en) * | 2018-05-22 | 2018-09-28 | 常州大学 | A kind of full-automatic solidification point measurement device and method |
| CN109374481A (en) * | 2018-12-12 | 2019-02-22 | 深圳市湘津石仪器有限公司 | A kind of analyzer |
-
1996
- 1996-04-09 CN CN 96103769 patent/CN1060571C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385239C (en) * | 2001-12-25 | 2008-04-30 | 尹林 | Electromagnetic pressure impulse on-line oil product solidifying point testing method |
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| Publication number | Publication date |
|---|---|
| CN1162117A (en) | 1997-10-15 |
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