WO2006013746A1 - Capteur de détection de niveau de liquide, dispositif de versement de liquide utilisant le capteur, appareil de mesure de capacité automatique pour conteneur, et procédé de détection de niveau de liquide - Google Patents

Capteur de détection de niveau de liquide, dispositif de versement de liquide utilisant le capteur, appareil de mesure de capacité automatique pour conteneur, et procédé de détection de niveau de liquide Download PDF

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Publication number
WO2006013746A1
WO2006013746A1 PCT/JP2005/013579 JP2005013579W WO2006013746A1 WO 2006013746 A1 WO2006013746 A1 WO 2006013746A1 JP 2005013579 W JP2005013579 W JP 2005013579W WO 2006013746 A1 WO2006013746 A1 WO 2006013746A1
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WO
WIPO (PCT)
Prior art keywords
liquid
container
liquid level
detection sensor
lower electrode
Prior art date
Application number
PCT/JP2005/013579
Other languages
English (en)
Japanese (ja)
Inventor
Minoru Nakano
Naohiro Tanaka
Yosuke Yamamoto
Original Assignee
Nihon Yamamura Glass Co., Ltd.
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 Nihon Yamamura Glass Co., Ltd. filed Critical Nihon Yamamura Glass Co., Ltd.
Publication of WO2006013746A1 publication Critical patent/WO2006013746A1/fr

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Classifications

    • 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
    • G01F23/22—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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/24—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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
    • B67C2003/2685—Details of probes

Definitions

  • Liquid level detection sensor liquid injection device using the same, automatic volume measuring device for container, and liquid level detection method
  • the present invention relates to a liquid level detection sensor for detecting the liquid level height of a liquid injected into a container such as a glass bottle, a plastic bottle, a glass cup, a seasoning container, and a liquid injection apparatus and a container using the same.
  • the present invention relates to an automatic volume measuring apparatus and a liquid level detection method.
  • this apparatus is a weighing table 11 for measuring the weight of a placed container P, a water supply pipe 12 for injecting liquid into the container P, and a container P being injected into the container P.
  • a liquid level detection sensor 13 for detecting the liquid level of the liquid
  • a temperature detection sensor 14 for detecting the temperature of the liquid poured into the container P
  • a top surface detection sensor 15 for detecting the top surface of the container.
  • Control means 16 for controlling the water supply pipe 12 and calculating the capacity of the container's taste line based on the detection signal from the liquid level detection sensor 13, the temperature detection sensor 14 and the top surface detection sensor 15 and the measurement signal from the weighing table. Is provided.
  • the control means 16 receives a measurement signal of the tare weight of the container P from the weighing table 11, calculates the height of the container P and the height to the taste line based on the detection signal from the top surface detection sensor, After injecting the liquid to the height up to the line, the injection of the liquid through the water supply pipe 12 is stopped and the measurement signal of the total weight of the container P at that time is received from the weighing table 11 and detected by the temperature detection sensor 14 Calculate the liquid density, subtract the tare weight of the container P from the total weight of the container P, calculate the weight of the liquid injected into the container P, and divide this liquid weight by the liquid density To calculate the capacity up to the taste line.
  • the water supply pipe 12 After calculating the filling line capacity, after the water supply pipe 12 injects further liquid to the top surface, it receives a measurement signal of the total weight of the container P at the time of full filling from the weighing table 11, and receives the signal of the container P at the time of full filling.
  • the total weight force is calculated by subtracting the tare weight of the container P to calculate the weight of the liquid injected into the container P and dividing the weight of the liquid by the density of the liquid to calculate the capacity at the time of filling. Subtract the taste volume from the injection volume to calculate the void volume of container P when liquid is injected up to the taste line.
  • the water supply pipe 12 includes a micro water supply pipe 17 having a small diameter S in order to make the injection amount precise, and the control means 16 uses the water supply pipe 12 and the micro water pipe 12 used according to the amount of liquid injected into the container P. Switch the water pipe 1 7.
  • a liquid level detection sensor 13 is provided at the lower end of the water supply pipe 12, and the water supply pipe 12 can be moved up and down by the drive means 18, and the water supply pipe 12 is inserted below the container P. Then, liquid injection is started from the water supply pipe 12, and the water supply pipe 12 is gradually moved upward so that the water supply pipe 12 and the liquid level are kept at a predetermined distance by the detection of the liquid level detection sensor 13.
  • the water supply pipe 12 is provided with a water absorption nozzle 19 for sucking the liquid injected into the container P, and the water supply pipe 12 and the micro water supply pipe 17 inject excessive liquid beyond the taste line or top surface of the container P.
  • the water absorption nozzle 19 absorbs excess liquid so that the liquid level and the taste line of the container P or the top surface are flush with each other by the detection of the liquid level detection sensor 13.
  • a drainage means 20 is provided for draining the liquid in the container P after the full capacity measurement or the taste line capacity measurement is completed.
  • the drainage means 20 grips the container P and opens the opening of the container P downward.
  • a reversing mechanism 21 is provided, and a drain receiver 22 that receives the liquid discharged from the container P is provided.
  • the automatic capacity measuring apparatus configured as described above is used as follows. First, when the container P is placed on the weighing table 11, the weighing table 11 measures the tare weight of the container P and issues a measurement signal of the measured tare weight of the container P to the control means 16. After the measurement of the tare weight, the water supply pipe 12 descends and the top surface detection sensor 15 detects the top surface of the container P, and issues a detection signal for the detected top surface of the container P to the control means 16. Upon receiving this detection signal, the control means 16 calculates the height of the container P and the height of the taste line. Then, the water supply pipe 12 descends and the container P When the water supply pipe 12 reaches the stop position at a predetermined interval, the descent of the water supply pipe 12 is stopped.
  • liquid injection through the water supply pipe 12 is started.
  • the liquid is rapidly injected into the container P using the water pipe 12 having a large diameter.
  • the temperature detection sensor 14 detects the temperature of the liquid and issues a temperature signal of the detected liquid to the control means 16.
  • the liquid level detection sensor 13 detects the liquid level of the liquid injected into the container P by the water supply pipe 12
  • the water supply pipe 12 gradually rises while maintaining a predetermined distance from the liquid level.
  • the liquid level of the liquid in the container P approaches the taste line of the container P, the liquid is injected using the small water supply pipe 17 having a small diameter in order to make the injection amount precise.
  • the injection of the liquid is stopped, and then the water absorption nozzle 19 causes the liquid level and the filling line of the container P to be flush with each other. To absorb water.
  • the water level is flush with the taste line of the container P due to this water absorption, the water absorption by the water suction nozzle 19 is stopped, and the liquid injection to the taste line of the container is finished.
  • the weighing table 11 measures the total weight of the container P when the filling line capacity is reached, and issues a measurement signal of the measured total weight of the container P to the control unit. .
  • the control unit 16 calculates the weight of the liquid injected into the container P by subtracting the tare weight of the container P from the total weight of the container, and uses the weight of the liquid as a detection signal from the temperature detection sensor 14.
  • the taste line capacity is calculated by dividing by the calculated density of the liquid.
  • the weighing table 11 measures the total weight of the container P into which the liquid has been poured up to the top surface, and issues a measurement signal of the measured total weight of the container P to the control means 16.
  • the control means 16 calculates the weight of the liquid injected into the container P by subtracting the tare weight of the container P from the total weight of the container P at the time of full filling, and calculates the calculated liquid weight by the density of the liquid. Calculate the full volume of the injected liquid by dividing. Subtract the filling line capacity from the full capacity of this liquid to calculate the space void volume of the container P from the filling line force to the top. As a result, it is possible to automatically measure the void volume of the container P after the liquid is injected into the taste line capacity.
  • Patent Document 1 Japanese Patent Laid-Open No. 2002-202173
  • the liquid level detection sensor 13 of the automatic container volume measuring device described above has an upper electrode bar 13a and a lower electrode bar 13 having different tip heights (lower ends).
  • the upper electrode bar 13a and the lower electrode bar 13b are inserted into the container P together with the water supply pipe 12, the micro water supply pipe 17 and the water absorption nozzle 19, the liquid is injected or absorbed into the container P.
  • the upper and lower electrode rods 13a and 13b are conducted through the liquid when the liquid level of the liquid rises or falls and the tip of the upper electrode rod 13a comes into contact with the liquid or is exposed on the liquid surface.
  • the upper and lower electrode rods 13a and 13b are disconnected from each other through the liquid, it is determined that the tip of the upper electrode rod 13a is positioned at a height that matches the liquid level. Therefore, it detects the liquid level of the liquid in the container P.
  • the upper electrode rod i 3a and the lower electrode rod 3b are supported by the contraction tube 23 on the outer periphery of the tip (lower end) of the water supply pipe 12 composed of a straight pipe, and the tip portions are spaced at an appropriate interval in the horizontal direction. It is placed straight and protrudes downward from the tip 12a of the water supply pipe 12.
  • the upper electrode rod 13a and the lower electrode rod 13b are arranged at an appropriate distance in the horizontal direction, and the upper electrode rod 11a and the lower electrode rod 13b
  • the tip partial force S of the electrode rod l ib is a structure that protrudes downward from the tip 12a of the water supply pipe 12 in a straight state, and thus has the following problems. That is, in order to detect the liquid level height of the liquid in the container P with high accuracy, when the inner diameter near the mouth of the container P is thin, the liquid level of the liquid forms a concave meniscus curve. It is necessary to detect the liquid level at the center of the liquid level.
  • the upper electrode rod 13a and the lower electrode rod 13b are arranged in the horizontal direction at an appropriate interval, and the upper end portions of the upper electrode rod 11a and the lower electrode rod l ib are arranged. Is straight and protrudes downward from the tip 12a of the water supply pipe 12.Therefore, a deviation distance (the upper electrode bar 13a and the upper electrode bar 13a and the lower electrode bar 13b, between the center line of the water supply pipe 12 and the upper electrode bar 13a and the lower electrode bar 13b.
  • the tip of 13a is located at a position that is out of the center force deviation distance of the liquid level, which means that the liquid level of the liquid is detected at a position outside the deviation distance from the center, and the liquid level of the liquid is accurately detected. There is a problem that cannot be detected.
  • the present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a liquid that can detect the liquid level of the liquid in the container with high accuracy.
  • An object of the present invention is to provide a surface detection sensor, a liquid injection device using the same, an automatic volume measuring device for a container, and a liquid detection method.
  • the present invention has an upper electrode bar and a lower electrode bar having different heights at the tips and appropriately spaced in the horizontal direction.
  • the upper electrode bar and the lower electrode bar When the tip of the upper electrode rod comes into contact with the liquid while the electrode is inserted into the container, or when the tip of the upper electrode rod is exposed on the liquid surface, the upper and lower electrode rods are conducted through the liquid, or In a liquid level detection sensor that detects the liquid level of the liquid by cutting off the conduction of the upper and lower electrode rods through the liquid, when the upper electrode rod and the lower electrode rod are inserted into the container,
  • the electrode rod is a liquid level detection sensor characterized in that its tip is formed so as to be close to the center line of the liquid level of the liquid in the container.
  • the tip portion of the upper electrode rod is bent toward the center line of the liquid level of the liquid in the container, and the tip is bent vertically downward at the position where the tip is bent to the center line. Then An end bent portion is formed.
  • an AC current is allowed to flow between the upper and lower electrode rods.
  • the upper and lower electrode rods are made of a metal material having excellent corrosion resistance.
  • the tip of the upper electrode bar is the center of the liquid level of the liquid in the container. Since it is located on the line, it is possible to detect the liquid level of the liquid in the container at the center of the liquid level, and the liquid level of the liquid in the container can be detected with high accuracy. In addition, since the tip bent portion of the upper electrode rod is located on the center line of the container, the liquid level of the liquid in the container can be detected regardless of the size of the liquid level in the container.
  • the present invention further includes a water supply pipe that is inserted into the container and injects the liquid, and a liquid level detection sensor that detects the liquid level of the liquid injected into the container, and detects the liquid level.
  • the sensor has an upper electrode rod and a lower electrode rod attached to the outer periphery of the tip of the water supply pipe with different heights at the tip and at an appropriate interval in the horizontal direction, and inserted into the container together with the water supply pipe. In this state, when the tip of the upper electrode rod comes into contact with the liquid or is exposed on the liquid surface, the upper and lower electrode rods are conducted through the liquid or the liquid of the upper and lower electrode rods is discharged.
  • This is a liquid injection device that detects the liquid level by disconnecting the continuity through the line! When the upper electrode bar and lower electrode bar of the liquid level detection sensor are inserted into the container, the upper electrode bar is formed so that the tip thereof is close to the center line of the liquid level of the liquid in the container.
  • the liquid injection device is characterized by the above.
  • the tip portion of the upper electrode rod is bent toward the center line of the liquid level of the liquid in the container, and the tip is bent vertically downward at the position where the tip is bent to the center line.
  • a bent end portion is formed.
  • an AC current is allowed to flow between the upper and lower electrode rods.
  • the upper and lower electrode rods are made of a metal material having excellent corrosion resistance.
  • the tip of the upper electrode rod when the water supply pipe is inserted into the container in a normal state in which the center line coincides with the center line of the container, the tip of the upper electrode rod is Since it is located on the center line of the liquid level of the liquid in the container, it is possible to detect the liquid level of the liquid in the container at the center of the liquid level, and the liquid level of the liquid in the container with high accuracy. Can be detected. Further, since the tip bent portion of the upper electrode rod is located on the center line of the container, the liquid level of the liquid in the container can be detected regardless of the liquid surface diameter of the liquid in the container.
  • the upper electrode rod and lower electrode rod do not cause electric corrosion, and the corrosion of the upper electrode rod and lower electrode rod is prevented from being corroded to prevent deterioration of the liquid level detection accuracy. can do. Furthermore, it is possible to suppress the occurrence of wrinkles of the upper electrode rod and the lower electrode rod, and it is possible to stabilize the conductivity of the upper electrode rod and the lower electrode rod over a long period of time.
  • the present invention also provides a measuring platform for measuring the weight of the container, a water supply pipe that is inserted into the container to inject the liquid, and a liquid that detects the liquid level of the liquid injected into the container.
  • the liquid level detection sensor is equipped with a sensor, a sensor for detecting the top surface detection sensor force, and a control means for calculating the filling line capacity, full filling capacity, void volume or filling line height of the container based on the measurement signal from the weighing table.
  • the upper and lower electrode rods are attached to the outer periphery of the front end of the water supply pipe with an appropriate distance in the horizontal direction and with different heights at the tip, and are inserted with the water supply pipe into the container.
  • the tip of the upper electrode rod comes into contact with the liquid in the
  • the upper and lower electrode rods are conducted through the liquid, or the conduction of the upper and lower electrode rods through the liquid is interrupted to reduce the liquid level.
  • an automatic volume measuring device for a container designed to detect, when the upper electrode rod and lower electrode rod of the liquid level detection sensor are inserted into the container, the upper electrode rod has its tip at the liquid in the container.
  • An automatic volume measuring device for a container characterized in that the container is formed so as to approach the center line of the liquid level.
  • the tip of the upper electrode rod is bent toward the center line of the liquid level of the liquid in the container, and the tip is bent vertically downward at the position where the tip is bent to the center line. Then An end bent portion is formed.
  • an AC current is allowed to flow between the upper and lower electrode rods.
  • the upper and lower electrode rods are made of a metal material having excellent corrosion resistance.
  • the automatic volume measuring apparatus for a container of the present invention configured as described above, when the water supply pipe is inserted into the container in a normal state in which the center line coincides with the center line of the container, the upper electrode Since the tip of the rod is positioned on the center line of the liquid level of the liquid in the container, the liquid level of the liquid in the container can be detected at the center of the liquid level, and the liquid in the container can be accurately detected. The liquid level can be detected. Further, since the tip bent portion of the upper electrode rod is located on the center line of the container, the liquid level of the liquid in the container can be detected regardless of the liquid surface diameter of the liquid in the container.
  • the upper electrode rod and the lower electrode rod do not cause electric corrosion, and the occurrence of corrosion due to the electric corrosion of the upper electrode rod and the lower electrode rod can be suppressed to prevent a decrease in detection accuracy of the liquid level. . Furthermore, it is possible to suppress the occurrence of wrinkles or the like of the upper electrode rod and the lower electrode rod, and to stabilize the conductivity of the upper electrode rod and the lower electrode rod over a long period of time.
  • the present invention includes a liquid level detection sensor having an upper electrode bar and a lower electrode bar that have different heights at the tip and are spaced at appropriate intervals in the horizontal direction.
  • the upper and lower electrode rods are conducted through the liquid or the upper and lower electrode rods are inserted.
  • the upper electrode rod of the liquid level detection sensor is placed at the center of the liquid level in the container.
  • the liquid level detection method is characterized in that it is arranged on a line and inserted into a container.
  • an alternating current is allowed to flow between the upper and lower electrode rods.
  • the upper and lower electrode rods are made of a metal material having excellent corrosion resistance.
  • the liquid level detection method of the present invention configured as described above, since the tip of the upper electrode rod is located on the center line of the liquid level of the liquid in the container, the liquid level of the liquid in the container is high. The height of the liquid in the container can be detected with high accuracy. The Moreover, the upper electrode rod and the lower electrode rod do not cause electric corrosion, and the occurrence of corrosion due to the electric corrosion of the upper electrode rod and the lower electrode rod can be suppressed to prevent a decrease in detection accuracy of the liquid level. . Furthermore, it is possible to suppress the occurrence of wrinkles or the like of the upper electrode rod and the lower electrode rod, and to stabilize the conductivity of the upper electrode rod and the lower electrode rod over a long period of time.
  • the liquid level of the liquid in the container can be detected at the center of the liquid level, and the liquid level of the liquid in the container can be detected with high accuracy. It is possible to provide a detection sensor, a liquid injection device using the detection sensor, a container automatic volume measuring device, and a liquid detection method.
  • FIG. 1 is a front view of a liquid level detection sensor of the present invention.
  • FIG. 2 is a side sectional view of FIG.
  • FIG. 3 is an enlarged bottom view of FIG.
  • FIG. 4 is a schematic front view of an automatic container volume measuring device.
  • FIG. 5 is a side view showing a measuring unit of the automatic capacity measuring device of FIG.
  • FIG. 6 is a configuration diagram schematically showing a measuring apparatus.
  • FIG. 7 is a front view of a conventional liquid level detection sensor.
  • FIG. 8 is a side sectional view of FIG.
  • FIG. 1 to 3 show an embodiment of the liquid level detection sensor of the present invention
  • FIG. 1 is a front view of the liquid level detection sensor
  • FIG. 2 is a side sectional view of the liquid level detection sensor
  • FIG. It is an enlarged bottom view of a liquid level detection sensor.
  • 1 is a water supply pipe that is inserted into the container P and injects a liquid such as drinking water
  • 2 is a container in the container P attached to the tip (lower end) of the water supply pipe 1.
  • Liquid level detection sensors for detecting the liquid level, 3 and 4 are minute water supply pipes used to precisely fill the liquid in the container P attached to the outer periphery of the water supply pipe 1 along the axial direction. And a water absorption nozzle.
  • the water supply pipe 1 is composed of a straight pipe that can be inserted into the container, and can be moved up and down by a driving means (not shown). As a result of detection by the detection sensor 2, the tip la and the liquid level gradually move upward so as to maintain a predetermined distance.
  • the liquid level detection sensor 2 has an upper electrode rod 2a and a lower electrode rod 2b having different tip height positions, and an AC voltage of an AC power source is applied between the upper and lower electrode rods 2a, 2b.
  • an AC voltage of an AC power source is applied between the upper and lower electrode rods 2a, 2b.
  • the liquid level detection sensor 2 detects the alternating current flowing between the upper and lower electrode rods 2a, 2b, so that the tip of the upper electrode rod 2a is positioned at a height matching the liquid level. It determines and detects the liquid level of the liquid in a container by it.
  • the upper electrode rod 2a and the lower electrode rod 2b are supported by the contraction tube 5 on the outer peripheral portion of the water supply pipe 1, and their tip portions protrude below the tip la of the water supply pipe 1.
  • the lower electrode rods 2b are arranged on the outer peripheral portion of the water supply pipe 1 so as to face each other by 180 ° and at an appropriate interval in the horizontal direction.
  • the tip of the upper electrode 2a is bent obliquely downward toward the center line of the water supply pipe 1, and further bent vertically downward at the position where the tip is bent to the center line of the water supply pipe 1.
  • the tip bent portion 2a ' is formed.
  • the lower electrode rod 2b is provided with a sufficient space (a space where it does not touch each other) between the upper electrode rod 2a and the front electrode portion 2b. It is slightly bent downward and downward.
  • the upper electrode rod 2a and the lower electrode rod 2b are made of platinum in the present embodiment. Platinum has excellent corrosion resistance and can suppress the occurrence of wrinkles in the upper electrode rod 2a and the lower electrode rod 2b, and can stabilize the conductivity of the upper electrode rod 2a and the lower electrode rod 2b over a long period of time. .
  • the minute water supply pipe 3 and the water absorption nozzle 4 are attached to the outer periphery of the water supply pipe 1 in the axial direction, and are supported by the contraction tube 5 together with the upper electrode bar 2a and the lower electrode bar 2b.
  • the minute water supply pipe 3 and the water absorption nozzle 4 are arranged on the outer periphery of the water supply pipe 1 so as to face each other by 180 °, and the tip portion protrudes below the tip la of the water supply pipe 1 and the tip is further higher. It is located below the tips of the electrode rod 2a and the lower electrode rod 2b.
  • the fine water supply pipe 3 and the water suction nozzle 4 are arranged on the outer periphery of the water supply pipe 1 at a distance of 90 ° from the upper electrode rod 2a and the lower electrode rod 2b! .
  • the water supply pipe 1 is lowered and the top surface detection sensor (not shown) moves the top surface of the container P.
  • the control means (not shown) that has detected and received the detection signal of the detected top surface of the container P calculates the height of the container P and the height of the taste line. Then, the water supply pipe 1 is lowered and inserted into the container P, and when the water supply pipe 1 reaches a stop position at a predetermined interval from the bottom surface of the container P, the descent of the water supply pipe 1 is stopped. .
  • liquid injection through the water supply pipe 1 is started.
  • the liquid is rapidly injected into the container P using the large diameter water supply pipe 1 in order to quickly inject the liquid.
  • a temperature detection sensor (not shown) detects the temperature of the liquid, and issues a temperature signal of the detected liquid to the control means.
  • the liquid is injected using the small water supply pipe 3 having a small diameter in order to make the injection amount precise. Then, after injecting a slightly larger amount of liquid than the specified weight, the injection of the liquid is stopped, and then the water absorption nozzle 4 removes excess liquid so that the liquid surface and the filling line of the container P are flush with each other. Absorb water.
  • the control means measures the total weight of the container P when the filling line capacity is reached, and the control means receiving the measurement signal of the measured total weight of the container P subtracts the total weight force of the container and the tare weight of the container P.
  • the weight of the liquid injected into the container P is calculated, and the weight of the liquid is calculated by dividing the weight of the liquid by the density of the liquid calculated by the detection signal of the temperature detection sensor force.
  • the surface force is raised by the surface tension. Absorb excess liquid so that the liquid level is flush with the top of the container P.
  • the bent end 2a 'of the upper electrode rod 2a is exposed on the liquid surface, and the upper and lower electrode rods 2a, 2a,
  • the state of conduction through the liquid of 2b is interrupted, the liquid level in the container P is detected, the water absorption by the water absorption nozzle 4 is stopped, and the liquid injection to the top surface of the container P is finished.
  • the water supply pipe 1 rises again, and the fine water supply pipe 3 and the water absorption nozzle 4 are pulled out from the liquid in the container P.
  • the weighing platform measures the total weight of the container P into which the liquid has been injected up to the top surface, and the control means receiving the measurement signal of the measured total weight of the container P Subtract the tare weight of container P from the total weight to calculate the weight of the liquid injected into container P, and calculate the full capacity of the injected liquid by dividing the calculated liquid weight by the liquid density. . Subtract the taste volume from the full capacity of this liquid and calculate the space void volume of the container P from the taste line to the top.
  • the discharging means (not shown) is flipped so that the opening of the container faces downward while holding the measured container P, and the liquid in the measured container P is drained. To do.
  • the tip bent portion 2a ′ of the upper electrode rod 2a of the liquid level detection sensor 2 is formed so as to be located on the center line of the water supply pipe 1!
  • the bent end 2a 'of the upper insertion pole 2a becomes the liquid level of the liquid in the container P.
  • the upper electrode rod 2a and the lower electrode rod 2b of the liquid level detection sensor 2 are made of platinum having excellent corrosion resistance. It is possible to suppress the occurrence of defects and to stabilize the conductivity of the upper electrode rod 2a and the lower electrode rod 2b over a long period of time.
  • the lower electrode rod 2b of the liquid level detection sensor 2 is provided with a sufficient distance from the tip portion of the upper electrode rod 2a. Bend slightly diagonally downward toward the line, but don't touch each other! If there is a gap, the front end portion may not be bent slightly diagonally downward toward the center line of the water supply pipe 1 outward.
  • the upper electrode rod 2a and the lower electrode rod 2b of the liquid level detection sensor 2 are made of platinum.
  • the present invention is not limited to platinum, and a metal material having excellent corrosion resistance, for example, Titanium or the like can be used.
  • the force described in the case where the liquid level detection sensor 2 according to the present invention is used in the automatic volume measuring device of the container shown in Figs. 4 to 6 is described.
  • the intelligent sensor 2 can be used for a liquid injection device that only injects liquid into the container P through the water supply pipe 1, and also when only detecting the liquid level of the liquid in the container P. You can!
  • the present invention is not limited to the configuration of the above embodiment, and the center line of the water supply pipe 1 and the center line of the container P coincide with each other.
  • Other configurations may be adopted as long as the tip of the upper electrode rod 2a of the surface detection sensor 2 is located even on the center line of the liquid level of the liquid in the container P.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)

Abstract

Sont fournis un capteur de détection de niveau de liquide capable de détecter avec haute précision la hauteur du niveau de liquide dans un conteneur, un dispositif de versement de liquide utilisant le capteur, un dispositif de mesure de capacité automatique pour un conteneur, et un procédé de détection de niveau liquide. Capteur de détection de niveau de liquide comportant une tige d’électrode supérieure (2a) et une tige d’électrode inférieure (2b) qui disposent de hauteurs de tête différentes et sont espacées horizontalement de façon appropriée, dans lequel la tige d’électrode supérieure (2a) est formée de telle sorte que, lorsque la tige d’électrode supérieure (2a) et la tige d’électrode inférieure (2b) sont insérées dans le conteneur (P), la tête (2a’) de la tige d’électrode supérieure (2a) est positionnée près de la ligne centrale du niveau de liquide dans le conteneur (P).
PCT/JP2005/013579 2004-08-04 2005-07-25 Capteur de détection de niveau de liquide, dispositif de versement de liquide utilisant le capteur, appareil de mesure de capacité automatique pour conteneur, et procédé de détection de niveau de liquide WO2006013746A1 (fr)

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JP2004-228133 2004-08-04
JP2004228133A JP3872486B2 (ja) 2004-08-04 2004-08-04 液面検知センサ及びそれを用いた液体注入装置及び容器の自動容量測定装置並びに液面検知方法

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EP2803623A1 (fr) * 2013-05-15 2014-11-19 Sidel S.p.a. Con Socio Unico Unité de remplissage d'une machine de remplissage de récipients, dotée d'une capacité de stockage améliorée
EP2803621A1 (fr) * 2013-05-15 2014-11-19 Sidel S.p.a. Con Socio Unico Unité de remplissage d'une machine de remplissage de récipients, dotée d'une capacité de détection améliorée
EP2803626A1 (fr) * 2013-05-15 2014-11-19 Sidel S.p.A. Con Socio Unico Unité de remplissage d'une machine de remplissage de récipients, dotée d'une capacité de communication améliorée

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US10401209B2 (en) 2016-06-22 2019-09-03 Abbott Laboratories Liquid level sensing apparatus and related methods

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JPH07198450A (ja) * 1993-12-28 1995-08-01 Omron Corp 液面レベル計測装置
JP2002202173A (ja) * 2000-12-27 2002-07-19 Asahi Soft Drinks Co Ltd 容器の自動容量測定装置及びその装置を用いた容器の容量測定方法
JP2003130714A (ja) * 2001-10-29 2003-05-08 Mitsubishi Heavy Ind Ltd 液位測定装置

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JPH07198450A (ja) * 1993-12-28 1995-08-01 Omron Corp 液面レベル計測装置
JP2002202173A (ja) * 2000-12-27 2002-07-19 Asahi Soft Drinks Co Ltd 容器の自動容量測定装置及びその装置を用いた容器の容量測定方法
JP2003130714A (ja) * 2001-10-29 2003-05-08 Mitsubishi Heavy Ind Ltd 液位測定装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2803623A1 (fr) * 2013-05-15 2014-11-19 Sidel S.p.a. Con Socio Unico Unité de remplissage d'une machine de remplissage de récipients, dotée d'une capacité de stockage améliorée
EP2803621A1 (fr) * 2013-05-15 2014-11-19 Sidel S.p.a. Con Socio Unico Unité de remplissage d'une machine de remplissage de récipients, dotée d'une capacité de détection améliorée
EP2803626A1 (fr) * 2013-05-15 2014-11-19 Sidel S.p.A. Con Socio Unico Unité de remplissage d'une machine de remplissage de récipients, dotée d'une capacité de communication améliorée
EP2803625A1 (fr) * 2013-05-15 2014-11-19 Sidel S.p.A. Con Socio Unico Unité de remplissage d'une machine de remplissage de récipients, dotée d'une capacité de stockage améliorée
EP2803622A1 (fr) * 2013-05-15 2014-11-19 Sidel S.p.a. Con Socio Unico Unité de remplissage d'une machine de remplissage de récipients, dotée d'une capacité de communication améliorée
EP2803624A1 (fr) * 2013-05-15 2014-11-19 Sidel S.p.A. Con Socio Unico Unité de remplissage d'une machine de remplissage de récipients, dotée d'une capacité de détection améliorée

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