WO1995030131A1 - Procede de determination de la masse d'un produit stocke dans un reservoir sous pression, et dispositif pour sa mise en oeuvre - Google Patents

Procede de determination de la masse d'un produit stocke dans un reservoir sous pression, et dispositif pour sa mise en oeuvre Download PDF

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Publication number
WO1995030131A1
WO1995030131A1 PCT/CZ1995/000005 CZ9500005W WO9530131A1 WO 1995030131 A1 WO1995030131 A1 WO 1995030131A1 CZ 9500005 W CZ9500005 W CZ 9500005W WO 9530131 A1 WO9530131 A1 WO 9530131A1
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WO
WIPO (PCT)
Prior art keywords
pressure
container
fact
mass
determination
Prior art date
Application number
PCT/CZ1995/000005
Other languages
English (en)
Inventor
Pavel S^¿ANTORA
Original Assignee
Santora Pavel
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Santora Pavel filed Critical Santora Pavel
Publication of WO1995030131A1 publication Critical patent/WO1995030131A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure

Definitions

  • the present invention relates to a method for the mass determination of the content of pressure containers for storing or transporting different materials, especially of the loose material in truck containers or container trailers, and a device for executing this method.
  • This disadvantage could be for example suppressed by equipping the transporting container with its own special weighing device the best of which is a tensometric system, when the container on the transporting truck is put on a system of tensometric readers.
  • Such a solution could enable the total mass determination of the container
  • SUBSTITUTE SHEET content both during its filling or removing by the user and would make possible to determine the total mass content of the container by the difference of the initial mass and the mass after removing a particular quantity directly on the building site. Nevertheless such a solution would require considerable changes in the construction of already existing transporting containers as well as considerable financial costs of their reconstruction. The same is valuable for investment costs of new transporting containers equipped with their own weighing system of this kind already by the manufacturer.
  • the nature of the method consists firstly in the filling the pressure container by the transported material, mass of which has to be determined. After the material filling or its removing will be the remaining free space of the pressure container refilled by a pressure medium, the best of which is the air, till up to the reaching of the same determinated pressure in the container. The quantity of the applied refilling pressure medium has to be measured. The difference between the known total volume of the pressure container and the measured quantity of the pressure medium used for the restoring the same pressure level in the pressure container determines the volume of the material remaining in the pressure container. The specific mass of the material and its determined volume gives its real initial or residual mass in the pressure container. The difference of the determined values gives
  • This procedure enables self-evidently to determine in a simple way at the so determined known initial mass of the material after its filling into the pressure container or before its removing, which has to be executed, the mass of the remaining material quantity in the pressure container after its further removing and from the difference of both masses directly just on the place of destination the mass of the really removed material without the necessity to transport the whole container to weighing in each stage of operating.
  • the recommended pressure in the container takes 0,06 up to 0,2 MPa.
  • the lower level of this pressure could be in general determined especially with regard to the required precision of the mass determination of the pressure container content and the higher level depends on the material strength of the pressure container.
  • For the compensation of temperature effects on the pressure size inside the container after reaching the required constant pressure by corresponding quantity of the applied gaseous medium it is necessary to measure the temperature of the gaseous medium too. Its size is then used for the correction of the measured quantity of the gaseous medium and of the final pressure in the container.
  • a device for executing the method according to the invention consists of the pressure making system which is connected with the pressure container by connecting tubing being equipped with a measuring element of the pressure medium quantity.
  • the most basic execution is the particular pressure, used for the mass evaluation of the content of the pressure container, determined by the performance of the pressure making system.
  • the device could also be equipped with a pressure reader measuring the pressure reached in the pressure container which makes it
  • SUBSTITUTE SHEET possible to evaluate the mass of the pressure container content by an other pressure than the maximum one.
  • the device could also be equipped with a temperature reader the outlet of which is connected with the evaluating unit too.
  • the device according to this invention could take use of an independent pressure making system or, for example at transporting truck container, of its already built-in pressure making system serving for its discharging.
  • the measuring element and eventually the pressure and temperature readers could be directly incorporated in the connecting tubing between the pressure making system and the pressure container or, for the example in the case of the assembly in the built-in pressure making systems of existing transporting truck containers, it could be placed in the measuring armature which is ⁇ upplementarilly incorporated in the connecting tubing.
  • the measuring armature In the case of the only one compression system for discharging the pressure container and for the determination of the mass of its content it is advantageous to connect the measuring armature to the connecting tubing parallely by at least one closing valve to exclude the unnecessary overloading of the measuring armature.
  • the evaluating unit with a setting keyboard and by an outlet to the printer placing the both of these devices for example in the operating cabin.
  • FIG. 1 shows the complete arrangement in the block scheme
  • FIG. 2 shows the placing of its measuring part on the container trailer
  • FIG. 3 shows the detail "A" from FIG. 2,
  • FIG. 4 shows in the block scheme an alternative arrangement.
  • the device according to the figures 1 up to 3 consists of the pressure making system 1 which is composed of a compressor with a driving aggregate and connected with the pressure container 2 by connecting tubing £.
  • a measuring armature 10. is incorporated into the connecting tubing 9 by means of flanges 15. with the sealing 16..
  • the measuring armature 10 contains the measuring element 3. of the quantity of the pressure medium going from the pressure making system 1 in the pressure container 2. which is equipped on both sides with the rectifier 1 of the flow of the pressure medium.
  • To the measuring armature 10. are also connected sensors of the pressure reader 4. and the temperature reader 5 with their outlets installed in connection with the outlet of the measuring element 3. into the evaluating unit 6 . equipped with an independent monitoring unit 2 put in the cabin of the truck service in connection with a keyboard 8 . and a printer 13..
  • a reverse flap 2 ⁇ is placed in the connecting tubing 9. between the measuring armature 10 and the pressure container 2..
  • the concrete execution of this procedure according to the invention begins with the volume measuring of the vacant pressure container and with the verification of its tightness.
  • the pressure container 2. will be exposed to the pressure for example of 0,1 MPa according to the data given on the pressure reader 4.. After stabilization of this pressure will be measured the quantity of the pressure medium which has come into the pressure container 2. by means of the measuring element 3_. From the obtained data will be then determined the volume of the pressure container, in this case by means of the evaluating unit 6_. The volume of the pressure container has to be finally put into the memory of the evaluating unit 6,.
  • the pressure container 2 will be released of the established pressure and could be then filled with the material which has to be transported. After the filling to the required quantity, checked only by estimation, the pressure container 2.
  • the whole pressure container 2. or the whole truck or trailer will be weight by the classical way and the determined weight is also put into the memory of the evaluating unit 6. after the subtraction of the known vacant weight of the pressure container 2. or the whole truck or trailer.
  • the volume of the filled material has to be determined by installing the pressure of 0,1 MPa and by determination of the quantity of the applied pressure medium. From the so determined volume and mass will be determined the specific mass of the filled material which is also put into the memory. After discharging a part of the content of the pressure container 2. will be firstly removed the remaining pressure and the pressure then again put to 0,1 MPa with measuring the flow of the used pressure medium. In this way will be determined the volume of the free remaining area in the pressure container 2 . and so also
  • the method and the device according to the invention is determined for the weighing especially of cement, power station ashes, ground limestone, lime, different mortar mixtures or other dry or wet powders or granular mixtures filled freely or with overpressure into the containers on truck or trailers or other similar transporting devices of the pressure containers by the application of their own or foreign ⁇ urces of the pressure medium.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

Procédé selon lequel, après le remplissage d'un réservoir, ou après son évacuation, on détermine le volume du contenu du réservoir en remplissant d'un milieu sous pression la fraction vide à l'intérieur du réservoir, et ce jusqu'à obtention d'une pression prédéterminée, le milieu typique étant de l'air. On calcule la fraction vide à partir de la quantité du milieu sous pression ainsi introduit, et de la pression obtenue. Ensuite, on détermine le volume du contenu du réservoir par soustraction de cette fraction vide du volume total connu du réservoir.
PCT/CZ1995/000005 1994-05-02 1995-04-27 Procede de determination de la masse d'un produit stocke dans un reservoir sous pression, et dispositif pour sa mise en oeuvre WO1995030131A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ941061A CZ106194A3 (en) 1994-05-02 1994-05-02 Method of determining mass of pressure vessel content for storage or transportation of various substances and apparatus for making the same
CZPV1061-94 1994-05-02

Publications (1)

Publication Number Publication Date
WO1995030131A1 true WO1995030131A1 (fr) 1995-11-09

Family

ID=5462687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ1995/000005 WO1995030131A1 (fr) 1994-05-02 1995-04-27 Procede de determination de la masse d'un produit stocke dans un reservoir sous pression, et dispositif pour sa mise en oeuvre

Country Status (2)

Country Link
CZ (2) CZ106194A3 (fr)
WO (1) WO1995030131A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004104524A2 (fr) * 2003-05-21 2004-12-02 Girardello, Gianpaolo Procede de mesure d'un volume libre d'un reservoir et dispositif de mesure fonctionnant selon ce procede
WO2020035582A1 (fr) * 2018-08-16 2020-02-20 Endress+Hauser Messtechnik Gmbh+Co. Kg Procédé pour la détermination d'un volume vide résiduel, procédé pour l'étalonnage in situ d'un appareil de mesure de niveau et module d'étalonnage in situ
CN114575973A (zh) * 2022-02-28 2022-06-03 东风商用车有限公司 气驱式scr尿素罐的液位测量方法、装置和车辆

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737069A1 (de) * 1977-08-17 1979-03-01 Siegfried Brueckl Verfahren zur echtmessung von behaelter-fuellvolumen
FR2510750A1 (fr) * 1981-07-31 1983-02-04 Frigofrance Sa Procede et dispositif de controle et d'ajustement d'une quantite de liquide contenue dans un reservoir
JPS59148824A (ja) * 1983-02-15 1984-08-25 Kawasaki Heavy Ind Ltd サイロなどの大型貯槽内貯蔵物の計量方法
FR2646238A1 (fr) * 1989-04-20 1990-10-26 Peugeot Systeme de jaugeage par pressurisation pour reservoir carburant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737069A1 (de) * 1977-08-17 1979-03-01 Siegfried Brueckl Verfahren zur echtmessung von behaelter-fuellvolumen
FR2510750A1 (fr) * 1981-07-31 1983-02-04 Frigofrance Sa Procede et dispositif de controle et d'ajustement d'une quantite de liquide contenue dans un reservoir
JPS59148824A (ja) * 1983-02-15 1984-08-25 Kawasaki Heavy Ind Ltd サイロなどの大型貯槽内貯蔵物の計量方法
FR2646238A1 (fr) * 1989-04-20 1990-10-26 Peugeot Systeme de jaugeage par pressurisation pour reservoir carburant

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"ESTIMATING LIQUID AND GAS CONTENTS IN A TANK", NTIS TECH NOTES, 1 September 1991 (1991-09-01), pages 727, XP000264082 *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 286 (P - 324)<1723> 27 December 1984 (1984-12-27) *
WATANABE K ET AL: "VOLUME MEASUREMENT OF DEFORMED MATERIALS IN TANKS", ISA TRANSACTIONS, vol. 27, no. 4, 1 January 1988 (1988-01-01), pages 9 - 19, XP000111169 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004104524A2 (fr) * 2003-05-21 2004-12-02 Girardello, Gianpaolo Procede de mesure d'un volume libre d'un reservoir et dispositif de mesure fonctionnant selon ce procede
WO2004104524A3 (fr) * 2003-05-21 2005-03-10 Girardello Gianpaolo Procede de mesure d'un volume libre d'un reservoir et dispositif de mesure fonctionnant selon ce procede
WO2020035582A1 (fr) * 2018-08-16 2020-02-20 Endress+Hauser Messtechnik Gmbh+Co. Kg Procédé pour la détermination d'un volume vide résiduel, procédé pour l'étalonnage in situ d'un appareil de mesure de niveau et module d'étalonnage in situ
US11428568B2 (en) 2018-08-16 2022-08-30 Endress+Hauser Group Services Ag Method for determining a remaining empty volume, method for on-site calibration of a fill level measuring device, and on-site calibration module
CN114575973A (zh) * 2022-02-28 2022-06-03 东风商用车有限公司 气驱式scr尿素罐的液位测量方法、装置和车辆

Also Published As

Publication number Publication date
CZ3783U1 (cs) 1995-08-31
CZ106194A3 (en) 1995-12-13

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