WO2023073808A1 - Dispositif et procédé de mesure - Google Patents

Dispositif et procédé de mesure Download PDF

Info

Publication number
WO2023073808A1
WO2023073808A1 PCT/JP2021/039491 JP2021039491W WO2023073808A1 WO 2023073808 A1 WO2023073808 A1 WO 2023073808A1 JP 2021039491 W JP2021039491 W JP 2021039491W WO 2023073808 A1 WO2023073808 A1 WO 2023073808A1
Authority
WO
WIPO (PCT)
Prior art keywords
opening
measuring
concentration
flow
liquid
Prior art date
Application number
PCT/JP2021/039491
Other languages
English (en)
Japanese (ja)
Inventor
吉岡秀久
後藤雅之
林慶一
山下智雄
Original Assignee
株式会社大気社
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 株式会社大気社 filed Critical 株式会社大気社
Priority to KR1020227007284A priority Critical patent/KR20230062465A/ko
Priority to JP2022516429A priority patent/JP7197748B1/ja
Priority to PCT/JP2021/039491 priority patent/WO2023073808A1/fr
Publication of WO2023073808A1 publication Critical patent/WO2023073808A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06—Indicating or recording devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N2001/002—Devices for supplying or distributing samples to an analysing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N2015/0003—Determining electric mobility, velocity profile, average speed or velocity of a plurality of particles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N2015/0042—Investigating dispersion of solids
    • G01N2015/0053—Investigating dispersion of solids in liquids, e.g. trouble
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the present invention relates to a measuring device and measuring method capable of measuring the concentration of solids in a liquid flowing through a predetermined flow path.
  • Typical degreasing methods include an immersion method in which the object to be coated is immersed in a degreasing solution such as a basic treatment solution, and a spraying method in which the object to be coated is sprayed with the degreasing solution.
  • a device piping, pump, etc. for circulating the degreasing liquid is provided, and the degreasing liquid is often circulated and used repeatedly.
  • Contamination of the degreasing liquid becomes a problem when the degreasing liquid is used repeatedly.
  • the iron powder adhering to the object to be coated is washed away by the degreasing liquid, separated from the object to be coated, and remains in the degreasing tank.
  • the concentration gradually increases. If the iron powder contained in the degreasing solution adheres to the surface of the object to be coated and is carried over to the next process or later, it may cause defects such as bumps on the surface of the product after painting. Conventionally, techniques for removing the have been studied.
  • the coating pretreatment apparatus disclosed in Japanese Patent Application Laid-Open No. 2002-322571 is provided with a filter for removing impurities from the degreasing and chemical conversion treatment liquid filled in the dipping tank.
  • a filter for removing impurities from the degreasing and chemical conversion treatment liquid filled in the dipping tank.
  • Patent Document 2 there is a reservoir in which the washing liquid sprayed on the vehicle body is collected, and the washing liquid in the reservoir is received and foreign matter is removed and purified. After that, there is provided a foreign matter removing circuit for sending out the purified liquid as a cleaning liquid.
  • the same phenomenon may be a problem for other solids of iron powder in the degreasing process.
  • solids include lint in the degreasing process, chemical sludge in the chemical conversion process, and iron powder in the electrodeposition process.
  • Patent Documents 1 and 2 consider removing foreign substances contained in the degreasing liquid, but do not consider specifying the concentration of foreign substances (iron powder) contained in the degreasing liquid. rice field.
  • the conventional method of manually measuring the concentration of iron powder by periodically sampling the degreasing solution has been used, but this method requires continuous or frequent measurement of the concentration of iron powder. was difficult. Therefore, it has been difficult to identify the time when the treatment for removing foreign matter from the degreasing liquid should be performed.
  • the apparatus itself for measuring the concentration of solids such as iron powder is known, if the opening 91 of the measuring apparatus 9 is opened in the flow path of the degreasing liquid L as shown in FIG. A part of the circulating degreasing liquid L can be led to the concentration measuring unit 2, and the concentration of solids in the degreasing liquid L can be continuously measured.
  • the concentration of solids in the degreasing liquid L flowing near the wall surface of the channel may not sufficiently represent the average concentration of solids in the entire degreasing liquid L. It was difficult to measure. Therefore, the concentration of solids in the degreasing liquid L could not be accurately measured in some cases.
  • a measuring device is a measuring device capable of measuring the concentration of solids in a liquid flowing through a predetermined flow path, comprising: a concentration measuring unit capable of measuring the concentration of solids; and an opening in the flow path.
  • a guide tube having an opening and capable of guiding the liquid, which has flowed through the opening, to the concentration measuring unit as a sample, wherein the opening faces the flow direction of the liquid flowing through the channel. It is characterized in that it can be installed in an open posture.
  • a measuring method is a measuring method for measuring the concentration of solids in a liquid flowing through a predetermined flow path, wherein a guide tube having an opening at one end is and the other end of the guide tube is connected to a concentration measuring unit capable of measuring the concentration of solids, and the opening is connected to the guide tube. and guiding the liquid that has flowed into the unit to the concentration measuring unit as a sample, and measuring the concentration of solids in the sample.
  • the location where the opening serving as the sample inlet is provided is not limited to the wall surface of the channel, the sample can be collected from a position that can sufficiently represent the concentration of solids in the degreasing liquid L. Therefore, it is easy to accurately measure the concentration of solids.
  • the concentration measuring unit includes a particle counter capable of measuring the number of particles in the sample, a flow meter capable of measuring the flow rate of the sample, and an arithmetic device. and the computing device is capable of executing a concentration specifying function of specifying the concentration of solids in the sample based on the indicated value of the particle counter and the indicated value of the flow meter.
  • the flow rate of the sample can be specified along with the concentration of the solid matter.
  • the concentration measurement unit can be configured by combining devices that are relatively easily available.
  • the measuring device includes a control valve capable of adjusting the flow rate of the sample flowing through the guide tube, and a current meter capable of measuring the flow rate of the liquid flowing through the flow path inside the tube.
  • a control device wherein the control device specifies an inflow flow speed, which is the flow speed of the liquid flowing into the opening, based on the indicated value of the flow meter; and the inflow flow speed and and an inflow flow rate control function of controlling the opening degree of the control valve so that the flow rate in the pipe becomes equal to the flow rate in the pipe.
  • the concentration of solids in the liquid flowing in from the opening easily matches the concentration of solids in the fluid flowing through the channel. This allows a more accurate measurement of solids concentration in the fluid.
  • the measuring device includes a control valve capable of adjusting the flow rate of the sample flowing through the guide tube, and a current meter capable of measuring the flow rate of the liquid flowing through the flow path inside the tube. , a control device, and an urging device capable of urging the sample flowing through the guide tube, wherein the control device controls the flow of the liquid flowing into the opening based on the indicated value of the flow meter. Controlling at least one selected from the opening degree of the control valve and the output of the urging device so that the inflow velocity is equal to the inflow velocity, and the inflow velocity is equal to the inflow velocity. and an inflow rate control function.
  • the inflow velocity can be precisely controlled.
  • the opening may be configured to be installed in a position in which the opening is open to a portion of the channel where the main stream of the liquid flowing through the channel is formed. preferable.
  • the measuring device preferably further includes a cleaning medium supply device capable of supplying a cleaning medium from the middle of the guide pipe toward the opening.
  • the concentration of solids in the entire liquid can be accurately measured by opening the opening in the portion where the main stream of the liquid is formed and collecting a sample from the main stream.
  • the guide tube is installed at a position where the liquid flowing through the flow path is oriented downward or upward in the vertical direction.
  • measuring apparatus 1 used for measuring the concentration of iron powder (which is an example of solid matter) in degreasing liquid L used in degreasing tank 100 of a painting facility.
  • measuring apparatus 1 used for measuring the concentration of iron powder (which is an example of solid matter) in degreasing liquid L used in degreasing tank 100 of a painting facility.
  • an example applied to a method for measuring the concentration of iron powder using the measuring device 1 will be described.
  • the degreasing tank 100 is a device for immersing an object to be coated (such as a vehicle body) in the degreasing liquid L stored in the degreasing tank 100 to chemically remove oil adhering to the surface of the object to be coated before coating.
  • the degreasing tank 100 includes a main tank 101, an auxiliary tank 102, a nozzle device 103, a liquid supply channel 104, and a pump 105 (Fig. 1).
  • As the degreasing liquid L for example, an alkaline detergent or the like can be used.
  • the main tank 101 is a tank in which the degreasing liquid L is stored.
  • the object to be coated is immersed in the degreasing liquid L stored in the main bath 101 to be degreased.
  • the auxiliary tank 102 is a tank into which the degreasing liquid L overflowing from the main tank 101 flows.
  • a liquid supply path 104 is connected to the bottom of the auxiliary tank 102 , and the degreasing liquid L flowing into the auxiliary tank 102 is supplied to the nozzle device 103 via the liquid supply path 104 .
  • a pump 105 for urging the degreasing liquid L is provided in the middle of the liquid supply path 104 .
  • the nozzle device 103 is provided inside the main tank 101 and can supply the degreasing liquid L to the main tank 101 .
  • the degreasing liquid L flows in the order of the main tank 101, the auxiliary tank 102, the liquid supply path 104 (pump 105), and the nozzle device 103, and the circulation path returning to the main tank 101 is established. formed.
  • the degreasing tank 100 while the degreasing liquid L is circulated, the degreasing of the objects to be coated that sequentially flow in can be repeated.
  • the degreasing liquid L is mixed with iron powder.
  • the degreasing liquid L is circulated, and the degreasing liquid L is not actively replaced. rising. Since the iron powder contained in the degreasing liquid L may adhere to the surface of the object to be coated and be carried over to subsequent processes, it is not preferable to increase the concentration of the iron powder in the degreasing liquid L. Therefore, the concentration of iron powder in the degreasing liquid L is measured using the measuring device 1 according to the present embodiment, and the degreasing tank 100 is cleaned when the concentration exceeds a predetermined standard.
  • a measuring apparatus 1 includes a concentration measuring unit 2 capable of measuring the concentration of iron powder in a sample, a guide tube 3, a control valve 4, and a pump 5 (an example of an urging device). , a flowmeter 6, a compressed air supply device 7 (which is an example of a cleaning medium supply device), and a control device 8 (FIGS. 2 and 3).
  • the measuring device 1 is provided in the liquid supply path 104 (an example of a predetermined flow path) of the degreasing tank 100, and the degreasing liquid L (an example of a liquid) flowing through the liquid supply path 104 is ) will be described with respect to an example configured to be able to measure the concentration of iron powder inside.
  • the concentration measurement unit 2 is a unit that can measure the concentration of iron powder contained in the inflowing liquid sample.
  • the concentration measurement unit 2 according to this embodiment has a particle counter 21 capable of measuring the number of particles in the sample, a flowmeter 22 capable of measuring the flow rate of the sample, and an arithmetic device 23 .
  • the secondary side pipe 24 of the concentration measurement unit 2 is connected to the liquid supply path 104, and the sample after measurement returns to the liquid supply path 104.
  • the particle counter 21 is implemented as a known in-line measurement particle counter such as an electromagnetic induction type or a light scattering type, and is capable of outputting the total number of particles (in units of particles) detected in the sample in circulation as an indicated value.
  • the flow meter 22 is implemented as a known liquid flow meter, and can output the flow rate (in units of mL/min) of the flowing sample as an indicated value.
  • the arithmetic unit 23 is implemented as a known computer (for example, PLC) having a CPU and a storage medium, and based on the indicated value of the particle counter 21 and the indicated value of the flow meter 22, the iron powder in the sample flowing A concentration identification function can be performed to identify the concentration of the Specifically, the cumulative value P (in units of particles) of the number of particles (indicated value of the particle counter 21), the length of the period T (in minutes) during which the cumulative value was obtained, and the flow rate F of the circulated sample ( mL/min), the iron powder concentration C (pieces/mL) in the sample is specified by Equation 1 below.
  • C P/(TF) (1)
  • the guide tube 3 is a tubular body that can guide a liquid as a sample to the concentration measurement unit 2 .
  • An opening 31 is provided at one end of the guide tube 3 , and the liquid (degreasing liquid L) flowing through the opening 31 flows through the guide tube 3 and is guided to the concentration measurement unit 2 .
  • a control valve 4 and a pump 5 are provided in the middle of the guide pipe 3 , and a compressed air supply device 7 is provided in a form branching from the guide pipe 3 .
  • the opening 31 is an opening provided on the side surface of the sampling tube 32 that constitutes one end portion of the guide tube 3 .
  • the sampling tube 32 is configured to be inserted into the side surface of the tubular body 104a that constitutes the liquid supply path 104, and its dimensions are such that when the sampling tube 32 is inserted into the side surface of the tubular body 104a, the opening 31 is sized to be placed in the central portion of the liquid supply passage 104 .
  • the central portion of the liquid supply channel 104 means a region of the liquid supply channel 104 sufficiently separated from the wall surface (the actual portion of the tubular body 104a). It refers to a portion where the main flow of the liquid L (a portion that is not substantially affected by the viscosity) is formed.
  • the opening direction of the opening 31 can be made to face the circulation direction of the degreasing liquid L flowing through the liquid supply path 104.
  • the sampling tube 32 is installed at a location where the liquid supply path 104 (pipe body 104a) is provided along the vertical direction (the location indicated by the dashed line II in FIG. 1). , the degreasing liquid L flows upward at this point. Therefore, the opening 31 opens downward. Since the opening 31 faces (downward) the flow direction (upward) of the degreasing liquid L, part of the degreasing liquid L flowing through the liquid supply path 104 flows into the opening 31. Then, the degreasing liquid L can be guided to the concentration measuring unit 2 .
  • the location where the sampling pipe 32 is installed in the liquid supply path 104 is a location where the deviation of the flow velocity of the degreasing liquid L flowing through the liquid supply path 104 in the direction of the liquid supply path 104 is sufficiently small.
  • a collection tube 32 is preferably installed at a location downstream from a location where the flow velocity may change, such as the inlet or bent portion of the liquid supply channel 104, and at a location where the distance from the location where the flow velocity may change is 10 times or more the inner diameter of the liquid supply channel 104.
  • the control valve 4 is a valve that can adjust the flow rate of the sample (degreasing liquid L) flowing through the guide pipe 3 .
  • the degree of opening of the control valve 4 is determined according to an electrical signal input to the control valve 4, and the electrical signal is transmitted from the control device 8.
  • the control valve 4 a known control valve having such a function can be used.
  • the control valve 4 may be always opened and its opening degree adjusted, or may be intermittently opened and its opening degree adjusted only when it is opened. In the former case, the measurement of solid content concentration is continuously performed, and in the latter case, the measurement of solid content concentration is performed intermittently.
  • the pump 5 is a pump capable of urging the sample (degreasing liquid L) flowing through the guide tube 3 .
  • the output of the pump 5 is determined according to the electrical signal input to the pump 5 and such electrical signal is sent from the controller 8 .
  • a known pump having such a function can be used as the pump 5 .
  • the compressed air supply device 7 is configured to supply compressed air (which is an example of a cleaning medium) from the middle of the guide pipe 3 toward the opening 31 .
  • compressed air which is an example of a cleaning medium
  • the compressed air supply device 7 is configured to supply compressed air (which is an example of a cleaning medium) from the middle of the guide pipe 3 toward the opening 31 .
  • compressed air flows toward the opening 31 . That is, the compressed air flows backward through the guide pipe 3 and is discharged from the opening 31 .
  • foreign matter such as iron powder
  • the opening and closing of the control valve 72 can be controlled by any method.
  • a method in which the control device 8 performs a function of controlling the opening and closing of the control valve 72 a method in which the opening and closing of the control valve 72 is controlled by a timer, and a method in which the opening of the control valve 4 reaches a predetermined set value.
  • a method of opening the control valve 72 at times, a method of opening the control valve 72 when the inverter output frequency controlling the output of the pump 5 reaches a predetermined set value, and the like can be employed.
  • the flow meter 6 is a flow meter capable of measuring the flow velocity in the pipe, which is the flow velocity of the liquid (degreasing liquid L) flowing through the liquid supply path 104 . More specifically, the flow rate meter is configured and arranged to measure the flow rate of the degreasing liquid L in the central portion of the liquid supply passage 104 .
  • the definition of the central portion of the liquid supply path 104 is the same as above.
  • the control device 8 is implemented as a known computer (for example, PLC) having a CPU and a storage medium, and is capable of executing an inflow velocity specifying function and an inflow velocity control function.
  • the inflow velocity specifying function is a function of specifying the inflow velocity, which is the flow velocity of the liquid (degreasing liquid L) flowing into the opening 31 , based on the indicated value of the flow meter 22 . Specifically, based on the indicated value (mL/min unit) of the flow meter 22 and the opening area (cm 2 unit) of the opening 31 stored in advance in the storage medium, the inflow velocity (m/sec unit) ).
  • the inflow velocity control function is a function that controls the opening of the control valve 4 or the output of the pump 5 so that the inflow velocity and the in-pipe flow velocity are equal. By performing such control, the inflow velocity and the in-pipe flow velocity become equal. It is easy to match the concentration of the iron powder, and the accuracy of the concentration measurement can be improved. Conversely, if there is a difference between the inflow velocity and the in-pipe flow velocity, the iron powder concentrations of the two may deviate. For example, when the inflow velocity is faster than the in-pipe flow velocity, in addition to the degreasing liquid L flowing in from the front of the opening 31, the degreasing liquid L flowing around it is also sucked into the opening 31.
  • the computing device 23 and the control device 8 may be provided separately or may be the same. That is, for example, a single PLC may be configured to be capable of executing the concentration specifying function (function as arithmetic device 23), and the inflow velocity specifying function and inflow flow velocity control function (function as control device 8). .
  • the guide pipe 3 is installed in the liquid supply path 104 in such a posture that the opening 31 faces (downward) the flow direction (upward) of the degreasing liquid L. Also, the other end of the guide tube 3 is connected to the concentration measurement unit 2 (flow meter 22). A control valve 4 and a pump 5 are provided in the middle of the guide pipe 3, and a compressed air supply device 7 is provided in a form branched from the guide pipe 3. In addition, a current meter 6 is installed in the liquid supply path 104 .
  • the degreasing liquid L flowing into the guide tube 3 from the opening 31 can be circulated through the guide tube 3 and guided to the concentration measuring unit 2.
  • the concentration of iron powder inside can be measured.
  • the control device 8 is caused to execute the inflow velocity specifying function and the inflow velocity control function to specify the inflow velocity, which is the flow velocity of the liquid (degreasing liquid L) flowing into the opening 31, and the liquid flowing through the liquid supply path 104.
  • the opening of the regulating valve 4 and the output of the pump 5 are controlled so that the in-pipe flow velocity (indicated by the flow meter 6), which is the flow velocity of the (degreasing liquid L), matches the inflow velocity.
  • the guide pipe 3 since the guide pipe 3 is installed so that the opening 31 faces (downward) the flow direction (upward) of the degreasing liquid L, the width direction of the liquid supply path 104 The concentration of the iron powder in the degreasing liquid L is substantially uniform throughout. Therefore, the degreasing liquid L flowing from the guide pipe 3 is suitable as a sample representing the concentration of iron powder in the entire degreasing liquid L flowing through the liquid supply passage 104 . In this way, it is preferable to install the guide pipe 3 at a location where the degreasing liquid L flowing through the liquid supply path 104 is oriented downward or upward in the vertical direction.
  • Foreign matter adhering to the opening 31 can be removed by using the compressed air supply device 7 as appropriate (by appropriately opening the control valve 72) and flowing the compressed air toward the opening 31. , the clogging of the opening 31 can be prevented.
  • Such an operation may be performed at an arbitrary timing based on human judgment, or at a timing determined to be necessary based on the indicated values of the particle measuring device 21 and the flow meter 22, It may be performed periodically at predetermined time intervals.
  • the opening 31 is provided on the side surface of the sampling tube 32 forming one end portion of the guide tube 3
  • the opening is not limited as long as it can be installed in a posture of opening facing the flow direction of the fluid flowing through the channel.
  • a bent tube having an open end 33 is used as a member constituting one end portion of the guide tube 3 instead of the extraction tube 32 of the above-described embodiment.
  • 34 is used as a bent tube having an open end 33 (an example of an opening) is used.
  • the open end 33 can be opened to face the flow direction of the degreasing liquid L flowing through the liquid supply path 104 .
  • the configuration in which the sampling tube 32 is installed at a location where the liquid supply path 104 (pipe body 104a) is provided along the vertical direction (the location indicated by the dashed line II in FIG. 1) is taken as an example. explained as.
  • the position where the guide pipe is installed is not limited as long as the opening can be installed in a posture in which the opening faces the distribution direction of the liquid flowing through the channel.
  • the measuring device 1 according to the above embodiment is installed directly above the bottom opening 102a of the auxiliary tank 102 (the location indicated by the dashed line V in FIG. 1).
  • the sampling tube 32 is inserted from the side of the auxiliary tank 102 so that the opening 31 faces upward.
  • the opening 31 can be arranged so as to face the downward flow of the degreasing liquid L flowing into the bottom opening 102a (connected to the liquid supply passage 104).
  • the direction is not limited to the downward direction, but may be appropriately set as the direction opposite to the direction of flow of the liquid flowing through the channel. That is, the opening direction of the opening depends on the direction of liquid flow at the location where the measuring device according to the present invention is installed. For example, when the direction of liquid flow is horizontal, the opening direction of the opening is set in the horizontal direction opposite to the horizontal direction.
  • the configuration in which the secondary side pipe 24 of the concentration measurement unit 2 is connected to the liquid supply path 104 has been described as an example.
  • the connection destination of the secondary side pipe of the concentration measuring unit is not limited.
  • the position is not limited.
  • the secondary pipe 24 is connected downstream of the opening 31 in the embodiment of FIG. 2 , and the secondary pipe 24 is connected upstream of the opening 31 in the modified example of FIG. 5 .
  • the opening 31 can be arranged in the central portion of the liquid supply path 104
  • the relative positions of the opening and the channel are not limited.
  • the opening may be provided in the portion of the feed channel near the wall where the boundary layer is formed.
  • the configuration in which the compressed air supply device 7 is provided and the opening 31 can be cleaned by supplying compressed air to the opening 31 has been described as an example.
  • the presence or absence of the cleaning medium supply device is optional.
  • the cleaning medium is not limited to compressed air, and may be, for example, liquid of the same kind as the liquid flowing through the flow path, water, or the like.
  • the configuration of the cleaning medium supply device can be appropriately selected according to the cleaning medium to be used.
  • the configuration in which the concentration measurement unit 2 has the particle measuring device 21, the flow meter 22, and the arithmetic device 23 has been described as an example.
  • the specifications of the concentration measurement unit are not particularly limited as long as the concentration of solids in the sample can be measured.
  • the concentration C of solids in the sample is used as an indicated value. Any device capable of output may be used.
  • the inflow velocity control function the configuration that can execute the function of controlling the opening degree of the control valve 4 or the output of the pump 5 so that the inflow velocity and the in-pipe flow velocity are equal has been described as an example.
  • the measurement device according to the invention may not be able to perform the inflow flow rate control function.
  • the inflow velocity depends on the intra-pipe flow velocity and is determined by circumstances, and more specifically, the inflow velocity tends to be lower than the intra-pipe flow velocity.
  • the measured value of the concentration of solids tends to be higher than the concentration of solids in the liquid actually flowing through the channel.
  • the inflow flow rate control function in terms of more accurate measurement of the concentration of solids, but depending on the required measurement accuracy, this function may be omitted.
  • the components to be controlled are not limited as long as the inflow velocity can be controlled.
  • the configuration may be such that the pump 5 is omitted, and only the opening of the control valve is a candidate for the controlled object.
  • the configuration in which the flow meter 6 for measuring the flow velocity inside the pipe is provided has been described as an example.
  • the measuring device according to the present invention does not have to be equipped with a current meter.
  • the inflow velocity control function is omitted as described above, the current velocity meter can be omitted because there is no need to measure the in-pipe flow velocity.
  • the in-pipe flow velocity may be specified based on actual measurements of other parameters instead of providing the velocity meter. Examples of parameters that can be converted into the in-pipe flow velocity include the flow rate of the liquid flowing through the channel, the dynamic pressure in the vicinity of the opening, and the like. In this case, a measuring instrument capable of measuring parameters to be converted is installed.
  • this aspect of the present invention further comprises a pressure gauge capable of measuring the dynamic pressure at the opening, a control device, and an urging device capable of urging the sample flowing through the guide tube, wherein the control device It may be possible to implement an inlet flow rate control function that controls the output of the biasing device based on the pressure gauge reading.
  • the present invention does not preclude use in combination with devices or equipment that perform further operations using the concentration of solids in a liquid specified by the measuring device and measuring method according to the present invention.
  • a sub-channel having a solid removal device is provided separately from the liquid supply channel 104, and the degreasing liquid L is supplied when the measured concentration of solids exceeds a predetermined threshold value.
  • the liquid path 104 it may be configured to flow through a sub-flow path.
  • a known device such as a filter type or a cyclone type can be used as the solid matter removing device.
  • the downstream outlet of the sub-channel can be provided in the auxiliary tank 102, for example.
  • the present invention can be used, for example, when measuring the concentration of solids in fluids used in various processes of painting equipment.
  • Reference Signs List 1 measuring device 2: concentration measuring unit 21: particle measuring device 22: flow meter 23: computing device 3: guide tube 31: opening 32: sampling tube 33: open end (modification) 34: bent pipe (modification) 4: Control valve 5: Pump 6: Velocity meter 7: Cleaning medium supply device 71: Air compressor 72: Control valve 8: Control device 9: Conventional measuring device 91: Opening of conventional measuring device 100: Degreasing tank 101: Main tank 102: Auxiliary tank 102a: Bottom opening of auxiliary tank 103: Nozzle device 104: Liquid supply path 104a: Pipe body 105: Pump L: Degreasing liquid

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Fluid Mechanics (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

L'invention concerne un dispositif de mesure (1) permettant de mesurer la concentration d'un matériau solide dans un liquide (L) traversant un certain passage d'écoulement (104), comprenant une unité de mesure de concentration (2) permettant de mesurer la concentration du matériau solide, et un tube de guidage (3) comportant une partie d'ouverture (31) qui s'ouvre dans le passage d'écoulement (104), et permettant de guider le liquide s'écoulant de la partie d'ouverture (31) vers l'unité de mesure de concentration (2) en tant qu'échantillon, la partie d'ouverture (31) étant configurée pour pouvoir être installée dans une position dans laquelle la partie d'ouverture (31) débouche face à une direction d'écoulement du liquide traversant le passage d'écoulement (104).
PCT/JP2021/039491 2021-10-26 2021-10-26 Dispositif et procédé de mesure WO2023073808A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020227007284A KR20230062465A (ko) 2021-10-26 2021-10-26 측정 장치 및 측정 방법
JP2022516429A JP7197748B1 (ja) 2021-10-26 2021-10-26 測定装置および測定方法
PCT/JP2021/039491 WO2023073808A1 (fr) 2021-10-26 2021-10-26 Dispositif et procédé de mesure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/039491 WO2023073808A1 (fr) 2021-10-26 2021-10-26 Dispositif et procédé de mesure

Publications (1)

Publication Number Publication Date
WO2023073808A1 true WO2023073808A1 (fr) 2023-05-04

Family

ID=84687870

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/039491 WO2023073808A1 (fr) 2021-10-26 2021-10-26 Dispositif et procédé de mesure

Country Status (3)

Country Link
JP (1) JP7197748B1 (fr)
KR (1) KR20230062465A (fr)
WO (1) WO2023073808A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011092A1 (fr) * 1988-05-11 1989-11-16 Mecora Ab Jauge interferometrique de mesure de concentration
JPH11503236A (ja) * 1995-04-06 1999-03-23 アルファ・ラヴァル・アグリ・アクチボラゲット 流体中の粒子の定量決定方法及びその装置
US20020166391A1 (en) * 2001-04-05 2002-11-14 Khan Khalid Mahmood Method and system for in-line sample extraction
JP2004340804A (ja) * 2003-05-16 2004-12-02 Nippon Soken Inc 粒子濃度検出装置
JP2016055240A (ja) * 2014-09-09 2016-04-21 オルガノ株式会社 遠心ろ過器とこれを用いた微粒子捕捉装置、微粒子捕捉方法、並びに微粒子検出方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002322571A (ja) 2001-04-25 2002-11-08 Nissan Motor Co Ltd 塗装前処理装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011092A1 (fr) * 1988-05-11 1989-11-16 Mecora Ab Jauge interferometrique de mesure de concentration
JPH11503236A (ja) * 1995-04-06 1999-03-23 アルファ・ラヴァル・アグリ・アクチボラゲット 流体中の粒子の定量決定方法及びその装置
US20020166391A1 (en) * 2001-04-05 2002-11-14 Khan Khalid Mahmood Method and system for in-line sample extraction
JP2004340804A (ja) * 2003-05-16 2004-12-02 Nippon Soken Inc 粒子濃度検出装置
JP2016055240A (ja) * 2014-09-09 2016-04-21 オルガノ株式会社 遠心ろ過器とこれを用いた微粒子捕捉装置、微粒子捕捉方法、並びに微粒子検出方法

Also Published As

Publication number Publication date
JPWO2023073808A1 (fr) 2023-05-04
JP7197748B1 (ja) 2022-12-27
KR20230062465A (ko) 2023-05-09

Similar Documents

Publication Publication Date Title
CN103813863A (zh) 清洁设备
CA3034125C (fr) Appareil de test pour systeme de traitement des eaux usees
WO2023073808A1 (fr) Dispositif et procédé de mesure
JP2007023307A (ja) 無電解めっき液の再生装置及び再生方法
US20040253737A1 (en) Device and method for monitoring and regulating a process solution
Sehmel Particle sampling bias introduced by anisokinetic sampling and deposition within the sampling line
CN107615038B (zh) 在线取样装置
US20080053204A1 (en) Electrochemical Sensor
CN102668054A (zh) 用于分析水和在水中清洗的衬底的方法
CN108051258A (zh) 废水取样系统及其控制方法
RU2704037C1 (ru) Установка дозирования реагента в трубопровод
US20140338533A1 (en) Method for separating overspray
GB2577926A (en) Sampling and test apparatus for a waste water treatment system
RU2371701C1 (ru) Способ определения содержания загрязнений в жидкости, текущей в трубопроводе
NL7920203A (nl) Inrichting en werkwijze voor het bemonsteren van stromende fluida en brijen.
JP2939832B2 (ja) 液体測定装置
JP2005177594A (ja) 連続塗装方法及び連続塗装装置
KR20030010822A (ko) 반도체 제조 공정에서의 티오씨 측정 장치 및 그 측정 방법
JP6801192B2 (ja) 液中粒子測定装置及び液中粒子測定方法
JPH10244265A (ja) 配管内液体の磁場処理装置
JPS5990667A (ja) 塗布方法
JP2643286B2 (ja) 液の密度のオンライン測定方法
JP2007118004A (ja) 粉体散布のための方法と装置および、粉体散布システム、特に浸出により表面欠陥を検出する設備におけるその使用
Usmanova et al. Experimental researches and calculation of boundary concentration of an irrigating liquid
CN108731976A (zh) 线路板制作设备、浑浊液浓度取样分析装置及方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2022516429

Country of ref document: JP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21962357

Country of ref document: EP

Kind code of ref document: A1