CS232148B1 - Two-membrane capacitor depth gauge of liquids - Google Patents
Two-membrane capacitor depth gauge of liquids Download PDFInfo
- Publication number
- CS232148B1 CS232148B1 CS836603A CS660383A CS232148B1 CS 232148 B1 CS232148 B1 CS 232148B1 CS 836603 A CS836603 A CS 836603A CS 660383 A CS660383 A CS 660383A CS 232148 B1 CS232148 B1 CS 232148B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- diaphragm
- liquids
- depth gauge
- membrane
- fixed
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title claims description 14
- 239000007788 liquid Substances 0.000 title claims description 13
- 239000003990 capacitor Substances 0.000 title description 5
- 230000009977 dual effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 239000004577 thatch Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
- Measuring Fluid Pressure (AREA)
Description
Vynález ea týká dvojme,mbránového kapacitného híbkomera kvapalín v stojatých alebo tečúcich médiach.The present invention relates to a dual, diaphragm capacitive liquid hygrometer in stagnant or flowing media.
Doteraz používané metody merania híbok vodných hladím sú založené na principe plavákioivýohi mechanizmiotv s mechanickými převodem. Nevýhodou uvedených prístrojov je, že sú zložitej a hmotnej konštrukcie -a v pracovnej činnosti sú poruchové a drahé.The methods used to measure water surface depths up to now are based on the principle of float mechanisms with mechanical transmission. The disadvantage of said devices is that they are of a complex and material construction - and in operation they are defective and expensive.
Uvedené nedostatky odstraňuje dvojmembrániový klapaiciitňý hlbkoímer kvapalín podfa vynálezu, ktorého podstata spočívá v tom, že v telese sú upevněné dve piolymérové membrány -miedzi ktorými je kvapalné dielektrikum, pričom jedna, membrána je opretá o predpatú pružinu umiestnenú v nastaviteljnioim sedle a druhá membrána má nalepené pohyblivú došku kondenzátora s, vývodem, přitom pevná doska kondenzátora je osadená v izolačnom krúžku s vývodom cez otvor v telese.The above-mentioned drawbacks are overcome by the dual diaphragm-like fluid depth meter according to the invention, which consists in the fact that two polymers membranes are fixed in the body between which there is a liquid dielectric. The solid capacitor plate is mounted in an insulating ring with an outlet through an opening in the body.
Vynález dvíojmiembránového kapacitného híbkomera kvapalín umožňuje okamžité a přesné meranie výšky hladin kvapalín a pomocou snímača aj dialkový přenos iniformácií.The invention of the two diaphragm capacitive liquid hygrometer enables immediate and accurate measurement of the liquid level and, by means of a sensor, also a remote transmission of informations.
Dvojmembrániový kapacitný hlbkoímer kvapalín je v řeze znázorněný na pripojenom výkrese.The dual diaphragm capacitive liquid depth gauge is shown in cross-section in the attached drawing.
V membránovom telese 1 sú upevněné polyniérové membrány 2 a 3, pričom membrána 2 je fixovaná v sedle membránového telesa 1 tesniacim krúžkoím 4 a závitovým krúžkom 5. Membrána 2 má v střede nalepená kioviovú doštičku 8, na ktorú sa opiera měrná pružina 7, umiestnená v nastavitel'nom závitovom sedle 8 s otvorom. Druhá membrána 3 má na svojej lávej straně nalepené pohyblivú došku 9 kondenzátora, s vývodom 10 cez izolačný krúžok 11. Druhá pevná doska 12 kondenzátora je upevněná v izolačnom krúžku 11 s vývodom 13 cez otvor 14 v membránovom telese 1. Druhá membrána 3 je v telese 1 fixovaná krúžkom 15 a druhým závitovým krúžkom 1B. V tesniacej matici 17 je ďalší tesniací krúžok 13. Rúrka 19 je zalisovaná do membránového telesa 1 s pružnom hadicou 20.In the diaphragm body 1 are mounted polynier membranes 2 and 3, the diaphragm 2 being fixed in the seat of the diaphragm body 1 by the sealing ring 4 and the threaded ring 5. The diaphragm 2 has a centrally glued metal plate 8 on which the measuring spring 7 is supported. an adjustable threaded seat 8 with a bore. The second membrane 3 has on its left side glued a movable capacitor sock 9, with the outlet 10 through the insulating ring 11. The second solid plate of the capacitor 12 is fixed in the insulating ring 11 with the outlet 13 through the opening 14 in the membrane body 1. 1 fixed by the ring 15 and the second threaded ring 1B. In the sealing nut 17 there is another sealing ring 13. The tube 19 is pressed into the diaphragm body 1 with the flexible hose 20.
Pri meraní je l'avá strana polymérovej membrány 2 v priamom kontakte s kvapalinovým prostředím. Ak je střed membrány 2 v híbke h pod vodnou hladinou, tak tlak p posiobiaci na membránu 2 je ,p = χ.In the measurement, the left side of the polymer membrane 2 is in direct contact with the liquid medium. If the center of diaphragm 2 at depth h is below the water level, then the pressure p that is applied to diaphragm 2 is, p = χ.
. h, kde χ je měrná hmotnost kvapaliny. Sila posobiaca na membrány 2 a 3 sa určí podfa vztahu P = Fe. ,p, kde Fe je efektívna plocha membrány 2. Sila P je v rovnováhe s elastickými silami pružiny Pp a membrán 2 a 3, t. j. PM2 a, PM3, pričom PM = PMz + + PM3, přitom platí, že P = Pp + PM. Hodnoty Pp a PM sa volia tak, aby Pp > PM.. h, where χ is the specific gravity of the liquid. The force acting on the membranes 2 and 3 is determined by the relation P = F e . , p, where F e is the effective area of the membrane 2. The force P is in equilibrium with the elastic forces of the spring P p and the membranes 2 and 3, ie P M2 a, P M3 , where P M = P M z + + P M3 P = P p + P M. The values of P p and P M are selected such that P p > P M.
Membrány 2 a 3 plnia funkciu tesnenia, pričom tlakovú silu P od vodnej hladiny preberá pružina 7 tak, aby P = Pp. Predpátie pružiny Pp možno meniť pomocou pružinového! sedla, 8 v závite telesa 1. Priestor medzi membránou 2 a druhou membránou 3 je< vyplněný kvapalným dielektrikom, napr. glycerínem, destilovanou vodou a pod. V dosledku nestlačitelnosti kvapalného dielektrika změny priehybu membrány 2 o Ay sa roynajú změnám priehybu membrány 3 za předpokladu, že obe membrány majú rovnakú tuhost, t. j. PMi = Pmž·The diaphragms 2 and 3 fulfill the function of sealing, wherein the pressure force P from the water surface is taken over by the spring 7 so that P = P p . Spring preload P p can be changed by spring! The space between the diaphragm 2 and the second diaphragm 3 is filled with a liquid dielectric, e.g. glycerine, distilled water and the like. As a consequence of the incompressibility of the liquid dielectric, the sag changes in the membrane 2 o Ay are equal to the sag changes in the membrane 3, provided that both membranes have the same stiffness, ie P M i = Pmž ·
Změny priehybu druhé membrány 3 sa elektricky prejavujú ako zrněny kapacity kondenzátora AC, vytvořeného pohyblivou doiskou 9 a pevnou doskou 12 kondeinzátoňa. Kapacitný snímač je izolovaný od vomkajšieho prostredia, v ddsledku čohiO1 je pri meraní přesný. Pravá komora híbkomera,, t. j. priestor medzi druhou membránou 3 a tes.niacou. maticou 17 je spojená prostredníctvom rúrky 19 a hadice 20 s atmosférou, čím sa úplné eliminuje vplyv zmien barometrického tlaku na merané hodnoty. HÍbkomerom možno merať nozpátie híbok + 30' m s presnosťou + 2 cm. Pri meraní híbky v tekutých médiach třeba přístroj umiestaiť tak, aby stlačenie membrány v ddsledku dynamického účinku prúdenia bolo nulové.Changes in the deflection of the second diaphragm 3 are electrically reflected as a grain of capacitance of the AC capacitor formed by the movable plate 9 and the fixed conduit plate 12. The capacitive sensor is isolated from the external environment, as a result of CohiO 1 is accurate in the measurement. The right chamber of the hygrometer, i.e. the space between the second membrane 3 and the sealing. nut 17 is connected to the atmosphere via tube 19 and hose 20, thus completely eliminating the effect of barometric pressure changes on the measured values. The depth gauge can measure depth + 30 'with an accuracy of + 2 cm. When measuring depth in liquid media, the instrument should be positioned so that the diaphragm compression due to the dynamic flow effect is zero.
Híbkomeir možno využit všade tam, kde sa vyžaduje dočasné alebo trvalé meranie výšky hladin kvapalín.Híbkomeir can be used wherever temporary or permanent measurement of liquid level is required.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS836603A CS232148B1 (en) | 1983-09-12 | 1983-09-12 | Two-membrane capacitor depth gauge of liquids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS836603A CS232148B1 (en) | 1983-09-12 | 1983-09-12 | Two-membrane capacitor depth gauge of liquids |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS660383A1 CS660383A1 (en) | 1984-05-14 |
| CS232148B1 true CS232148B1 (en) | 1985-01-16 |
Family
ID=5413471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS836603A CS232148B1 (en) | 1983-09-12 | 1983-09-12 | Two-membrane capacitor depth gauge of liquids |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS232148B1 (en) |
-
1983
- 1983-09-12 CS CS836603A patent/CS232148B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS660383A1 (en) | 1984-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4446730A (en) | Specific gravity independent gauging of liquid filled tanks | |
| US7401522B2 (en) | Pressure sensor using compressible sensor body | |
| US3618390A (en) | Differential pressure transducer | |
| US4221134A (en) | Differential pressure transducer with strain gauge | |
| US3559488A (en) | Differential pressure measuring apparatus | |
| US2360886A (en) | Apparatus for determining hydrostatic pressure | |
| US3520191A (en) | Strain gage pressure transducer | |
| US3645137A (en) | Quartz pressure sensor | |
| US4136567A (en) | Pulp density meter | |
| CS232148B1 (en) | Two-membrane capacitor depth gauge of liquids | |
| Alva-Hurtado et al. | Survey of laboratory devices for measuring soil volume change | |
| US2548960A (en) | Liquid level gauge | |
| RU2087884C1 (en) | Instrument converter of pressure difference | |
| US668514A (en) | Water-gage. | |
| US5886301A (en) | Method and device for measuring weight | |
| CS232149B1 (en) | Membrane capacitor depth gauge of liquids | |
| US4561307A (en) | Liquid differential pressure measurement using a vertical manifold | |
| US3545276A (en) | Indicator and a pressure indicating system | |
| US4423638A (en) | Capacitive system for manometric detection and measurement of differential pressures | |
| SU800739A1 (en) | Soil pressure sensor | |
| RU2072539C1 (en) | Bottom form sensor | |
| GB2029062A (en) | Intruder detection | |
| CS233237B1 (en) | Membrane capacitive liquid flow rate meter | |
| RU2330251C1 (en) | Density pickup | |
| SU1272132A1 (en) | Strain transducer |