CN2213334Y - Determining density device for fluid - Google Patents
Determining density device for fluid Download PDFInfo
- Publication number
- CN2213334Y CN2213334Y CN 94239246 CN94239246U CN2213334Y CN 2213334 Y CN2213334 Y CN 2213334Y CN 94239246 CN94239246 CN 94239246 CN 94239246 U CN94239246 U CN 94239246U CN 2213334 Y CN2213334 Y CN 2213334Y
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- CN
- China
- Prior art keywords
- liquid
- utility
- model
- kapillary
- testing
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- Expired - Fee Related
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- Investigating Or Analysing Biological Materials (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model belongs to the field of analytical testing, particularly a device for testing the dynamic density of liquid flow. The utility model makes use of the principle of equal height and equal pressure of the liquid in a communicating vessel and also makes use of the contribution of the surface tension generated when the liquid flow through a tip nozzle, and therefore, the utility model is provided with a communicate device. So the liquid drops in and flows out the utility model via a dropper can get dynamic balance, the drop size and the volume of the utility model can be controlled, and the utility model can accomplish the purpose of continuous testing the dynamic density of the liquid. The utility model has simple manufacture, easy use method, reliable precision and low cost and is suitable for the requirements of testing the dynamic density of flowing liquid in chemical industry production monitoring, clinical urine monitoring, labs monitoring, etc.
Description
The utility model belongs to the analytical test field, is specifically related to a kind of device of measuring the flowable state fluid density.
Working fluid is formed the change that can cause density when changing at it.In real work, often need the dynamic density of continuous monitoring liquid, and require to have certain degree of accuracy (for example less than per mille).At present, the method for measuring fluid density has two kinds, and the one, utilize picnometer: the liquid of collecting q.s is measured with picnometer in graduated cylinder, and this method precision is not high, is generally about one of percentage.The 2nd, utilize pycnometer: demarcate the volume of pycnometer with normal fluid, be full of pycnometer with testing liquid again, the weight of precision weighing testing liquid, thereby the density of trying to achieve, the precision of this method depends on the precision of weighing, generally can reach ten thousand/.Measure static liquid density but above-mentioned two kinds of methods are, can not solve the dynamic density problem of METHOD FOR CONTINUOUS DETERMINATION flowable state liquid.
The purpose of this utility model is to provide the dynamic density that a kind of device can METHOD FOR CONTINUOUS DETERMINATION flowable state liquid, and reaches the certain precision requirement.
The technical solution of the utility model is to utilize the interior liquid of linker to have the principle of identical pressure at the sustained height liquid level, and the capillary contribution that when flowing through a most advanced and sophisticated mouth of pipe, is produced, (material is easily processing to design a communication apparatus, there is not the glass of chemical reaction with testing liquid, quartzy, stainless steel, hard materials such as engineering plastics), make testing liquid through a dropper 1 that bore is suitable, dropwise splash into the inlet 2 of this device with suitable speed, entry design is a toroidal, connect below and be about 4cm, internal diameter is suitable, the kapillary 3 that wall thickness is suitable, produce bubble when avoiding drop to enter kapillary, in kapillary, insert the capillary drainage silk 4 that thickness is suitable, the lower end welding of kapillary 3 is on grinding port plug 7, and passing plug 7 is r with the suitable extra heavy pipe 5(internal diameter of an internal diameter) link to each other, the distance of the bottom of the lower end of extra heavy pipe 5 and container 6, after treating that the ground of this device is airtight, be about 1～2mm, container 6 is the suitable ground tumbler of a volume, its internal diameter R is about 1.414r, other end opening welding one bending of grinding port plug 7 go out sample pipe 8, for avoiding retaining bubble, make the welding mouth be in the interior peak of plug, the outlet internal diameter of pipe 8 is consistent with the internal diameter of dropper 1, and its outlet lower edge height design is in distance pipe 3 upper limb 4cm(vertical ranges) be advisable.The suitable internal diameter of dropper 1 according to liquid and glass affinity different, to measure precision different, its value is to be advisable between 0.01～0.05ml with the volume that is controlled at every dropping liquid and drips, the suitableeest internal diameter is 0.3～1mm.Liquid splashes into the suitable speed of this device to be considered from stationarity and the operability measured, drips to 60 with per minute 10 and is advisable, if the flow of liquid surpasses this scope, can adopt part flow arrangement to regulate.The suitableeest internal diameter of kapillary 3 is 2～5mm, and it depends mainly on the requirement and the operability of measuring accuracy.Internal diameter is thin more in principle, and it is big more to splash into the pressure reduction that a drop of liquid produced, and the sensitivity of device is high more.Capillary drainage silk 4 adopts this device homogeneous material or easily makes for the inert material of liquid-soaked such as dacron thread etc., thickness is a foundation with practical and operability, the top more slightly is about 1mm, part in pipe 3 is 0.2～0.4mm, lower end and pipe 5 root edge weldings are attached on the sidewall it in pipe 5.The suitable internal diameter of pipe 5 depends on the volume of container 6, and the volume of pipe 5 is 1:2 with the ratio of the volume of container 6.The volume of container 6 depends on the measuring accuracy of whole device, for example when device is in transient equilibrium, whenever splash into a drop of liquid from managing 1, to flow out a drop of liquid from managing 8, if the volume of a drop of liquid is 0.02ml, in measuring accuracy is 5/10000ths, and then the volume of container 6 should be no less than 40ml, and the volume of the utility model device is generally 20～200ml.
The utility model clean dry is placed on (precision 1/1000g gets final product) on the electronic balance, meausring apparatus deadweight W
0, fill with this device with the liquid of standard density Do again and make and reach weigh W after the transient equilibrium
1, volume V then of the present utility model=(W
1-W
0)/D
0, be that the device of V places on the electronic balance with volume, make testing liquid dropwise splash into this device from managing 1, treat liquid be full of device from manage 8 flow out reach transient equilibrium after, then can be by the example weight W that records
XTry to achieve the dynamic density D of this liquid
X=W
X/ V.This density D
XExpress liquid is filled with this device average density of (t) collected liquid during this period of time.Under flow state, if flow rate of liquid is roughly even, the then instantaneous density that records is promptly represented the average density of t time period liquid.
Embodiment:
Clinical urine density is monitored automatically: the utility model adopts 95 material glass to make.Dropper 1 and go out the outlet internal diameter 0.7mm of sample pipe 8, kapillary 3 long 4cm, internal diameter 2.5mm, wall thickness 2mm, the capillary drainage silk thick 1mm in 4 tops, the thick 0.4mm of interlude, extra heavy pipe 5 internal diameter 2.1cm, container 6 internal diameter 3cm, device context amasss 42ml, deadweight 53g, and clinical urine measuring relative errors is 5/10000ths.
But the dynamic density of the utility model working fluid density measuring device METHOD FOR CONTINUOUS DETERMINATION liquid, method is easy, and precision is reliable, and is cheap, is applicable to the needs of mensuration working fluid dynamic densities such as Chemical Manufacture monitoring, the monitoring of clinical urine, laboratory.
The explanation of accompanying drawing drawing:
1: dropper 2: inlet
3: kapillary 4: capillary drainage silk
5: extra heavy pipe 6: container (ground tumbler)
7: grinding port plug 8: go out the sample pipe
Claims (4)
1, a kind of working fluid density measuring device, it is characterized in that going into kapillary by the dropper drop of liquid, the kapillary lower end is fused to grinding port plug, and the extra heavy pipe in passing grinding port plug and placing ground tumbler container links to each other, the other end opening of grinding port plug with go out the welding of sample pipe, make linker.
2,, it is characterized in that adopting the hard material that does not have a chemical reaction with testing liquid to make, as materials such as glass, quartz, stainless steel, engineering plastics by the described working fluid density measuring device of claim 1.
3, survey device by the described working fluid density of claim 1, it is characterized in that being provided with in the described kapillary capillary drainage silk, adopt with the determinator homogeneous material or easily make for the inert material of liquid-soaked such as dacron thread etc.
4, by the described working fluid density measuring device of claim 1, it is characterized in that the internal diameter of described kapillary, dropper and outlet is respectively 2～5mm, 0.3～1mm, described determinator volume is at 20～200ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94239246 CN2213334Y (en) | 1994-08-24 | 1994-08-24 | Determining density device for fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94239246 CN2213334Y (en) | 1994-08-24 | 1994-08-24 | Determining density device for fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2213334Y true CN2213334Y (en) | 1995-11-22 |
Family
ID=33846502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94239246 Expired - Fee Related CN2213334Y (en) | 1994-08-24 | 1994-08-24 | Determining density device for fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2213334Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241789A (en) * | 2015-10-27 | 2016-01-13 | 南京英伟隆环境技术有限公司 | Non-Newtonian fluid density on-line measuring equipment and method thereof |
| CN105381622A (en) * | 2015-10-16 | 2016-03-09 | 哈尔滨理工大学 | Continuous reduced pressure distillation apparatus and method for refining branched fatty acyl chloride by using apparatus thereof |
-
1994
- 1994-08-24 CN CN 94239246 patent/CN2213334Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105381622A (en) * | 2015-10-16 | 2016-03-09 | 哈尔滨理工大学 | Continuous reduced pressure distillation apparatus and method for refining branched fatty acyl chloride by using apparatus thereof |
| CN105381622B (en) * | 2015-10-16 | 2017-08-18 | 哈尔滨理工大学 | The method that Branched fatty acyl chlorides is refined using continuous vacuum distillation apparatus |
| CN105241789A (en) * | 2015-10-27 | 2016-01-13 | 南京英伟隆环境技术有限公司 | Non-Newtonian fluid density on-line measuring equipment and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |