WO2022092720A1 - Appareil antidéflagrant pour mesurer la concentration de chlore résiduel - Google Patents

Appareil antidéflagrant pour mesurer la concentration de chlore résiduel Download PDF

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Publication number
WO2022092720A1
WO2022092720A1 PCT/KR2021/014938 KR2021014938W WO2022092720A1 WO 2022092720 A1 WO2022092720 A1 WO 2022092720A1 KR 2021014938 W KR2021014938 W KR 2021014938W WO 2022092720 A1 WO2022092720 A1 WO 2022092720A1
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Prior art keywords
reagent
explosion
residual chlorine
unit
sample water
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PCT/KR2021/014938
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English (en)
Korean (ko)
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박석원
김성태
권경안
이광호
Original Assignee
주식회사 테크로스
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Publication of WO2022092720A1 publication Critical patent/WO2022092720A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
    • B63J4/002—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating ballast water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity
    • G01N21/5907—Densitometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N2021/0325—Cells for testing reactions, e.g. containing reagents
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N2021/755—Comparing readings with/without reagents, or before/after reaction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/7703—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator using reagent-clad optical fibres or optical waveguides
    • G01N2021/7706—Reagent provision

Definitions

  • the present invention relates to an explosion-proof residual chlorine concentration measuring device. More specifically, it relates to an explosion-proof residual chlorine concentration measuring device that can be installed in a dangerous area of a ship.
  • ballast water is introduced into the ship to improve the balance, safety and steering performance of the ship, and the voyage is carried out in a ballast state.
  • the ballast water is filled in one port and transported to another, where it is discharged into the new port.
  • the release of marine organisms and pathogens contained in the ballast water loaded from a distant location is not only harmful to the new environment, but also can be dangerous to both humans and animals in the new port.
  • non-natural marine life into a new ecosystem can have devastating effects on native flora and fauna that may not have natural defenses against the new species.
  • harmful bacterial pathogens such as cholera may be present in the original port. These pathogens can over time multiply within the ballast tanks and cause disease in the area where they are released.
  • the electrolysis method is mainly used to sterilize the ballast water, and the ballast water treatment system using the electrolysis method is equipped with a TRO sensor for measuring the TRO of the ballast water.
  • TRO is an abbreviation of "Total Residual Oxidant", which means the total residual oxidizing agent present in the ballast water.
  • chlorine generated through the electrolysis process oxidizes aquatic organisms in the ballast water and residual chlorine in the remaining chlorine. It is obtained by measuring the numerical value.
  • TRO is replaced with atoms such as bromine instead of active chlorine, and various types of oxidizing agents coexist. It refers to all active oxidizing agents present.
  • a TRO sensor using a DPD reagent that is less sensitive to water quality changes is mainly used.
  • the DPD type TRO sensor not only includes a transfer pump to inject the reagent from the reagent bottle to the measuring part, but also includes a check valve in the supply pipe to prevent backflow when transferring the reagent through the transfer pump. Complex.
  • the DPD-type TRO sensor in order to install the DPD-type TRO sensor in a dangerous area of a ship, it must be designed to have an explosion-proof structure that prevents explosion, and must go through a certification procedure for the explosion-proof structure.
  • Explosion-proof structures include intrinsic safety explosion-proof, pressure explosion-proof, pressure-proof explosion-proof, and safety-enhanced explosion-proof.
  • the explosion-proof structure In the case of the explosion-proof structure, it is composed of a sturdy housing because it has to withstand the pressure in case of explosion.
  • the TRO sensor device When replacing the DPD reagent, the TRO sensor device must be dismantled, so maintenance is inconvenient and the housing price is high.
  • the present invention has been devised to solve the above problems, and in particular, an object of the present invention is to provide an explosion-proof type residual chlorine concentration measuring device that can be installed in a dangerous area of a ship.
  • An explosion-proof residual chlorine concentration measuring apparatus devised to achieve the above object includes a light emitting unit and a light receiving unit, the sample water inlet pipe through which the sample water flows, and the sample number through which the measured sample water is discharged Measuring part to which the discharge pipe is installed; a reagent storage unit provided with a reagent inlet tube to introduce a reagent into the measurement unit; a control unit for measuring the concentration of an oxidizing agent in the sample water based on a signal received from the light receiving unit after the light generated by the light emitting unit passes through the sample number; an inlet valve and a discharge valve installed in the sample water inlet pipe and the sample water outlet pipe, respectively, and composed of a pneumatic valve; and a reagent injection device installed on the reagent inlet pipe to control the inflow of the reagent, wherein the reagent inlet pipe includes at least an elastic pipe made of an elastic material, and the reagent injection device is driven by air to pressurize the elastic pipe
  • the explosion-proof residual chlorine concentration measuring device may further include an air control valve for receiving a signal from the controller to drive the inlet valve, the outlet valve, and the reagent injection device.
  • the reagent injection device includes: a housing provided with an inlet and an outlet respectively connected to the reagent inlet tube, in which an elastic pipe connecting the inlet and the outlet is located; a pressure roller that moves in the longitudinal direction of the elastic pipe inside the housing and presses one side of the elastic pipe; and a driving unit for moving the pressure roller in the longitudinal direction of the elastic pipe with air supplied by the air control valve.
  • the driving unit moves the pressure roller to reciprocate linearly in the longitudinal direction of the elastic pipe, and in the housing, at least a part of the support portion is parallel to the reciprocating movement direction of the pressure roller, and the corner in the direction of the housing inlet is rounded. can be provided.
  • the housing may be provided with a height adjustment unit for vertically moving the support portion with respect to the reciprocating direction of the pressure roller.
  • a plurality of reagent storage units may be provided, and a plurality of pressure rollers may be provided to correspond to the reagent storage units, respectively.
  • the pneumatic valve may be installed in a danger zone, and the air control valve may be installed in a safety zone or a danger zone.
  • An explosion-proof residual chlorine concentration measuring device includes a vent provided in the measuring part so that the inside of the measuring part maintains a natural pressure, and the reagent storage part is converted to the measuring part by the natural pressure. It may be installed at a position higher than the measurement unit so that the reagent is injected.
  • the reagent storage unit a body having a storage space formed therein to store reagents, and having an opening on one side; a lid installed to be opened and closed in the opening of the body; and an elastic tube having one end connected to the lid and the other end connected to the reagent inlet tube.
  • control unit may be configured in an intrinsically safe explosion-proof structure.
  • the air control valve in the safety zone (Zone 2) to control the inlet valve, the exhaust valve, and the reagent injection device located in the danger zone (Zone 0 or Zone 1), residual chlorine located in the danger zone It has the effect of remarkably reducing the power consumption of the components of the concentration measuring device.
  • the position of the reagent storage unit is higher than that of the measuring unit so that the reagent is injected under natural pressure, thereby simplifying the structure and improving durability.
  • FIG. 1 is a block diagram showing an explosion-proof residual chlorine concentration measuring device according to an embodiment of the present invention
  • FIG. 2 is a block diagram showing an explosion-proof residual chlorine concentration measuring device according to another embodiment of the present invention.
  • FIG. 3 is a plan view showing a first embodiment of the reagent injection device provided in the explosion-proof residual chlorine concentration measuring device according to the present invention
  • FIG. 4 is a side view of FIG. 3 showing a state before reagent injection
  • Figure 5 is a side view of Figure 3 showing a state after the reagent injection
  • Figure 6 is a cross-sectional view of Figure 5
  • FIG. 7 is a side view showing a second embodiment of the reagent injection device provided in the explosion-proof residual chlorine concentration measuring device according to the present invention, showing a state before reagent injection;
  • FIG. 8 is a side view showing a second embodiment of the reagent injection device provided in the explosion-proof residual chlorine concentration measuring device according to the present invention, showing a state after reagent injection;
  • FIG. 9 is a front view showing a state before and after the pressure roller provided in the reagent injection device according to an embodiment of the present invention pressurizes the pipe;
  • FIG. 10 is a view showing a reagent storage unit and a measuring unit provided in the explosion-proof residual chlorine concentration measuring device according to the present invention
  • FIG. 11 is a graph showing the relative reactivity (Relative Responsivity) of the light receiving unit provided in the explosion-proof residual chlorine concentration measuring device according to the present invention.
  • FIG. 12 is a flowchart illustrating a method for measuring residual chlorine concentration according to the present invention.
  • FIG. 1 is a block diagram showing an explosion-proof residual chlorine concentration measuring device according to an embodiment of the present invention.
  • the explosion-proof residual chlorine concentration measuring device 100 includes a measuring unit 110 for measuring the residual chlorine concentration of a sample water, and a reagent for storing the reagent and injecting the reagent into the measuring unit 110 .
  • the measuring unit 110 is installed so that the light emitting unit 111 and the light receiving unit 113 face each other on both side surfaces.
  • the measuring unit 110 is formed of a transparent material through which light can pass, so that the light generated by the light emitting unit 111 can pass through the measuring unit 110 to reach the light receiving unit 113 . .
  • the light emitting unit 111 may be configured as a white LED to measure all three-channel wavelength bands.
  • the light receiving unit 113 is configured as an RGB sensor having color filters corresponding to Red, Green, and Blue to recognize all wavelengths of three channels. By checking the three wavelength bands, the accuracy can be increased in measuring the concentration of the oxidizing agent colored with DPD, and it can have the advantage of being able to respond to various types of reagents that develop in different colors with one device.
  • the white LED of the light emitting unit 111 when the white LED of the light emitting unit 111 is turned on, the intensity (light amount) of the light transmitted from the RGB sensor of the light receiving unit 113 is measured to measure the residual chlorine concentration.
  • a sample water inlet pipe 121 is installed so that the sample water flows in, and a sample water outlet pipe 125 is installed so that the sample water for which measurement is completed is discharged.
  • the inlet valve 123 is installed in the sample water inlet pipe 121
  • the outlet valve 127 is installed in the sample water outlet pipe 125 , so that the reagent introduced from the reagent storage unit 130 reacts with the sample water. It is configured so that it can be discharged smoothly afterward.
  • the explosion-proof residual chlorine concentration measuring device 100 measures the DPD (diethyl-p-phenylende diamine) reagent among various types of devices for measuring the oxidizing agent injected into the ballast water to be measured.
  • DPD diethyl-p-phenylende diamine
  • the TRO measuring device of the DPD method as described above includes a reagent storage unit 130 for storing the DPD reagent as a component because the DPD reagent is added to measure the oxidizing substance concentration after collecting a part of the treated ballast water. .
  • the DPD reagent is mixed with a buffer solution and injected into the measurement unit 110 .
  • the DPD reagent and the buffer solution may be mixed and stored in one container, but it is preferable for storage to be stored in separate containers.
  • the reagent storage unit 130 may additionally include a temperature maintaining means (not shown) maintained at a constant temperature to increase the reactivity of the reagent and the expiration date of the reagent.
  • the reagent storage unit 130 is installed at a higher position than the measuring unit 110 so that the reagent is injected into the measuring unit 110 by natural pressure. do.
  • a reagent inlet pipe 140 is installed between the reagent storage unit 130 and the measurement unit 110 so that the DPD reagent stored in the reagent storage unit 130 is smoothly supplied to the measurement unit 110 containing the sample water.
  • a reagent injection device 200 is installed in the reagent inlet pipe 140 to control the inflow flow of the reagent, and in the present invention, it is operated by air to minimize power consumption. A specific configuration of the reagent injection device 200 will be described later.
  • a plurality of reagent storage units 130 may be provided as shown in FIG. 1 .
  • the second reagent storage unit 130b is preliminary. ) through which the reagent can be supplied, enabling continuous reagent supply.
  • the reagent inlet pipe 140 may be configured as a chemical resistant tube to prevent corrosion and damage by the supplied reagent.
  • the explosion-proof residual chlorine concentration measuring apparatus 100 includes an inlet valve 123 and a discharge valve 127, which replaces the conventionally used solenoid valve with a pneumatic valve (Pneumatic). valve) to minimize power consumption.
  • the reagent inlet pipe 140 provided in the present invention includes at least an elastic pipe made of an elastic material, and the reagent injection device 200 driven by air is configured to press the elastic pipe, so that it has an intrinsically explosion-proof structure and has a reagent It is possible to supply the reagents built into the inlet pipe 140 .
  • the inlet valve 123, the discharge valve 127, and the reagent injection device 200 are configured as a solenoid valve as in the prior art, since the power consumption of the solenoid valve is 2W or more, 8W is used when four valves are simultaneously driven. Exceeded, it is impossible to satisfy the standards of the intrinsically safe explosion-proof structure, but the pneumatic valve applied to the present invention can be driven at 0.5 W or less, and the inlet valve 123 by the air control valve 170, By enabling the driving control of the discharge valve 127 and the reagent injection device 200, the explosion-proof residual chlorine concentration measuring device 100 of the present invention as a whole can satisfy the standards of an intrinsically safe explosion-proof structure, and is installed in a dangerous area of a ship. it becomes possible
  • the reagent injection device 200, the inlet valve 123, and the discharge valve 127 are driven by first to fourth air control valves 173a, 173b, 175 and 177, and the first to fourth air control valves 173a , 173b, 175, 177) is configured so that air is driven while pressurizing the reagent injection device 200, the inlet valve 123, and the outlet valve 127 when opened.
  • the air control valve 170 of low power (for example, 0.1W to 0.5W) that can satisfy the intrinsically safe explosion-proof structure as the air control valve 170 .
  • the operation of the air control valve 170 is performed by the control unit 150 .
  • the explosion-proof residual chlorine concentration measuring device 100 may be provided with means for supplying power to the control unit 150 and the air control valve 170 .
  • an air vent unit (not shown) may be formed in at least one of the measuring unit 110 and the reagent storage unit 130 of FIG. 1 .
  • the pressure applied to the measurement unit 110 is maintained as a natural pressure, and the reagent and sample water can be smoothly introduced and discharged.
  • the amount of the reagent can be kept constant.
  • the air vent unit (not shown) may be formed in the form of a vent hole, but is configured to perform the function of an air vent through the overflow pipe 160 connected to the measuring unit 110 as shown in FIG. 1 . You may.
  • the overflow pipe 160 can simultaneously perform an overflow function and an air vent function for discharging when the number of samples in the measurement unit 110 overflows.
  • the overflow pipe 160 is preferably connected to the upper end of the measuring unit 110 so that the overflow pipe 160 performs an air vent function well.
  • the control unit 150 measures the residual chlorine concentration of the sample water based on a signal received from the light receiving unit 113 after the light generated by the light emitting unit 111 passes through the sample water.
  • the control unit 150 may generate an alarm by determining that the sample water does not flow in, and the discharge valve 127 is measured after opening If the sample water of the unit 110 is not discharged, an alarm may be generated.
  • the control unit 150 turns on the light emitting unit 111 in a state where the measuring unit 110 is empty, stores the amount of light measured by the light receiving unit 113, and determines whether to fill the water based on this. That is, when the amount of light is weaker than a certain amount, it is determined that the number of samples is filled. In addition, if the amount of light is weak for a certain amount or more even when the number of samples is empty, it is determined that the measuring unit 110 is contaminated.
  • control unit 150 may generate a control signal to repeat the opening/closing operation of the inlet valve 123 so that the reagent injected into the measuring unit 110 is well mixed.
  • control unit 150 is simply composed of a PCB electronic circuit so that power consumption (usually, 2W or less) is small, and the operator must be able to access a configuration that displays a control screen and requires control operation.
  • Molded explosion-proof structure which is a closed structure, cannot be used, and it is preferable to have an intrinsically safe explosion-proof structure.
  • Figure 2 is a block diagram showing an explosion-proof residual chlorine concentration measuring apparatus according to another embodiment of the present invention. Descriptions of components having the same reference numerals as those of FIG. 1 will be omitted as they are the same as those of FIG. 1 .
  • the reagent injection device 200 in the explosion-proof residual chlorine concentration measuring device 100 , the reagent injection device 200 , the inlet valve 123 and the outlet valve 127 are installed in a danger zone (Zone 0 or Zone 1) and , the first to fourth air control valves (173a, 173b, 175, 177) are installed in the safety zone (Zone 2).
  • the explosion-proof residual chlorine concentration measuring device 100 is located in the danger zone by arranging the first to fourth air control valves 173a, 173b, 175, 177 in the safety zone and controlling the pressurized air.
  • the pneumatic valve and reagent injection device 200 in the DPD type TRO sensor, it is possible to further reduce power consumption in the danger zone.
  • the air control valve is located inside the DPD type TRO sensor, compared to the embodiment of FIG. 1 . Although this may be complicated, since only the power consumption of the control unit 150 is required in the danger zone, power consumption can be remarkably reduced.
  • FIG. 3 is a plan view showing a first embodiment of the reagent injection device provided in the explosion-proof residual chlorine concentration measuring device according to the present invention
  • FIG. 4 is a side view of FIG. 3 showing a state before reagent injection
  • FIG. 3 is a side view illustrating a state after reagent injection
  • FIG. 6 is a cross-sectional view of FIG. 5 .
  • the reagent injection device 200 includes a housing 220 , a reagent inlet pipe 140 installed through the housing 220 , and a housing 120 .
  • a pressurizing means 210 for pressurizing the reagent inlet pipe 140 inside.
  • An inlet 221 is provided on one side of the housing 220 so that the reagent inlet tube 140 is introduced into the housing 220 , and the reagent inlet tube 140 introduced into the housing 220 is connected to the housing 220 .
  • the discharge part 225 is provided so as to be guided to the outside of the housing 220 again after extending from the inside.
  • the support part 223 is positioned between the inlet 221 and the outlet 225 inside the housing 220 to support the reagent inlet pipe 140 introduced into the housing 220 . ) is included.
  • the support part 223 may be formed integrally with the housing 220, but as shown in FIG. 6 , it is configured separately and provided with a height adjustment part therebetween so that the support part 223 can be raised and lowered in the vertical direction. desirable.
  • the same reagent injection device 200 can be used for pipes 140 of various sizes. That is, by allowing the height adjustment unit to adjust the distance with the pressing means 210 , it is possible to generate all the necessary pressing forces for the pipes 140 of different sizes.
  • the height adjustment unit includes the height adjustment bolt 228 disposed between the housing 220 and the support portion 223, and rotates the height adjustment bolt 228 in the first direction or the second direction by rotating the support portion ( 223) may be configured to raise or lower.
  • guide pins 229 are spaced apart from each other on both sides of the height adjustment bolt 228 to guide the support 223 when ascending or descending so that the support 223 can move in parallel.
  • the reagent inlet pipe 140 is introduced into the housing 220 through the inlet 221 of the housing 220 , and extends along the support 223 from the inside of the housing 220 , and then the housing 220 is discharged. It is guided to the outside of the housing 220 through the portion 225 .
  • the fluid to be supplied in a fixed amount by being pressurized by the reagent injecting device 200 is located inside, and is pressurized and deformed by the pressurizing means 210 to transform the fluid into the reagent inlet pipe 140 .
  • only the portion pressed by the pressing means 210 of the reagent inlet tube 140 may be formed of an elastic material, and may be formed of a single reagent inlet tube 140 , but the reagent inlet tube 140 may be formed of a single reagent inlet tube 140 . ) and a separate pipe (not shown) made of an elastic material may be configured as a connection.
  • the reagent injection device 200 may configure the inlet side and the outlet side of the reagent inlet pipe 140 in various forms.
  • the inlet side of the reagent inlet tube 140 is located below the reagent injection device 200 and the outlet side of the reagent inlet tube 140 is the reagent injection device 200 . may be located below the
  • the inlet side of the reagent inlet pipe 140 may be positioned upward, and the outlet side of the reagent inlet pipe 140 may face rearward.
  • various combinations are possible in which the inlet side of the reagent inlet pipe 140 is positioned upward or downward, and the outlet side of the reagent inlet pipe 140 is positioned upward/front/downward.
  • the support 223 is formed to have a rounded corner in the direction of the inlet 221 of the housing 220 to introduce the reagent.
  • the reagent inlet tube 140 has an appropriate curvature when it is guided to the support portion 223 formed in the horizontal direction after changing the direction by about 90 degrees. By changing the direction, it is possible to maintain the internal open state without clogging.
  • the pressurizing means 210 moves in the longitudinal direction of the reagent inlet tube 140 inside the housing 220 and pressurizes one side (the upper end in FIGS. 3 to 6) of the reagent inlet tube 140.
  • the driving unit is configured to move the pressure roller 215 in a linear reciprocating motion in the longitudinal direction of the reagent inlet pipe 140, and in one embodiment of the present invention, one end of the connecting unit 214 is connected by the fastening unit 213b. It is connected to the pressure roller 215 through, and the other end is configured to include a piston rod 213 provided with a piston head 213a to be driven by pneumatic.
  • the piston head 213a is inserted into the hollow portion 211a of the piston case 211 and is configured to perform a linear reciprocating motion by pneumatic pressure.
  • the piston The head 213a can be driven left or right by pneumatic pressure.
  • the reagent injection device 200 has the advantage of being easy to apply to an explosion-proof structure by using a pneumatic piston as a driving unit instead of a pump using a motor.
  • a support portion 223 is installed as described above, at least a part of the support portion 223 is formed parallel to the reciprocating direction of the pressure roller 215 to the pressure roller 215.
  • the horizontal part 141 of the reagent inlet pipe 140 can be pressed on the support part 223 .
  • the support part 223 allows the reagent inlet pipe 140 to be constantly pressurized by the pressurizing means 210 by forming a flat upper outer circumferential surface except for the rounded portion.
  • the above-described height adjustment unit may be configured to vertically move the support portion 223 with respect to the reciprocating direction of the pressure roller 215 .
  • the reagent injection device 200 is a device for supplying a fixed amount of fluid, wherein the amount of the supplied fluid depends on the length of the piston rod 213 constituting the pressurizing means 210 .
  • the length of the support portion 223 is the length in which the lower end of the reagent inlet tube 140 contacts the support portion 223 when the pressure roller 215 reciprocates and pressurizes the reagent inlet tube 140 .
  • Supply can be fixed. Alternatively, the amount of one injection may be adjusted according to the diameter or length of the reagent inlet tube 140 .
  • the inflow side of the reagent inlet pipe 140 is located below the reagent injection device 200, and in FIG. 4, the reagent inlet pipe 140 is moved by the pressure roller 215. It is a position where the pressurization starts, and FIG. 5 is a position where the reagent inlet pipe 140 is pressurized by the pressurizing roller 215, and the pressurizing roller 215 moves to the left to pressurize the fluid in the reagent inlet pipe 140, One injection will be completed.
  • the pressure roller 215 is initially (located on the left side of the position in FIG. 4 ) located at the inlet 221 of the housing 220 so that the reagent inlet pipe 140 is pressurized. After the reagent fluid is filled in the reagent inlet pipe 140 in the non-reactive state, the pressure roller 215 is moved along the lengthwise direction of the reagent inlet pipe 140 to the outlet 225 of the housing 220, and a certain amount of liquid is configured to be injected.
  • FIG. 7 is a side view showing a second embodiment of a reagent injection device provided in the explosion-proof residual chlorine concentration measuring device according to the present invention, and showing a state before reagent injection
  • FIG. 8 is an explosion-proof residual chlorine concentration measuring device according to the present invention. It is a side view showing a second embodiment of the reagent injection device provided in the device, showing the state after the reagent injection.
  • the inlet 221 of the housing 220 is formed on the upper side so that the inlet side of the reagent inlet pipe 140 is located above the reagent injection device 200, and the outlet 225 is formed. is formed on the right side, and thus the support part 223 is also located above the reagent inlet pipe 140 .
  • a check valve 240 may be provided on the discharge side of the reagent inlet pipe 140 so that the liquid reagent does not flow back.
  • FIG. 9 is a front view showing a state before and after the pressure roller provided in the reagent injection device according to an embodiment of the present invention pressurizes the pipe.
  • Figure 9a shows the flat outer circumferential surface of the pressurizing roller 215 before pressurizing the reagent inlet tube 140 having a circular cross section, and the fluid 250 to be injected is located in the reagent inlet tube 140 .
  • the lower end of the pressure roller 215 forms a gap (G) between the inner peripheral surface of the lower end of the reagent inlet pipe (140).
  • the lower end of the pressure roller 215 completely presses the reagent inlet tube 140 so that the reagent inlet tube 140 is in a folded state. It may be positioned at the same height as the top of the tube 140 or lower. That is, the gap (G) is formed to be equal to or smaller than the thickness of the reagent inlet pipe 140, so that the pressurized state can be maintained.
  • the reagent injection device 200 includes a simple structure for pressing the reagent inlet tube 140 through the reciprocating motion of the piston rod 213, so that a fixed amount of liquid can be injected.
  • the explosion-proof structure can be easily constructed by the pneumatically driven piston driving unit.
  • FIG. 10 is a view showing a reagent storage unit and a measuring unit provided in the explosion-proof residual chlorine concentration measuring device according to the present invention.
  • the reagent storage unit 130 is installed at a higher position than the measurement unit 110 , and a reagent is injected into the measurement unit 110 by natural pressure.
  • the reagent storage unit 130 has a storage space formed therein to store reagents in a cylindrical shape, a body 131 having an opening on one side, and a lid ( 133).
  • the reagent storage unit 130 may include an elastic tube 135 having one end connected to the lid 133 and the other end connected to the reagent inlet tube 140 .
  • a support 137 may be included between the elastic tube 135 and the reagent inlet tube 140 .
  • the elastic tube 135 is connected through the connecting portion of the lid 133 and the support 137 so that the reagent can be injected through the elastic tube 135 .
  • the explosion-proof residual chlorine concentration measuring apparatus 100 can easily perform a reagent replacement operation through the spring-type elastic tube 135 as described above. That is, the reagent storage unit 130 is erected by connecting the elastic tube 135 to the lid 133 of the reagent storage unit 130 to replace the reagent, and then the reagent storage unit ( 130) maintains an inverted state by elasticity, and a reagent is supplied.
  • the amount of reagent supplied from the reagent storage unit 130 is determined by adjusting the operation (pressurization) time of the reagent injection device 200 .
  • the reagent is pressurized by a natural pressure, the state filled in the reagent inlet pipe 140 is maintained.
  • FIG. 11 is a graph showing the relative reactivity (Relative Responsivity) of the light receiving unit provided in the explosion-proof residual chlorine concentration measuring device according to the present invention.
  • the relative reactivity of the red, green, and blue regions varies depending on the wavelength. For example, in the red region, the relative reactivity increases at a wavelength of about 750 nm, and in the green region, the relative reactivity increases at a wavelength of about 560 nm. Able to know.
  • the measuring unit 110 of the present invention measures whether the sample water is filled using the RED area of the RGB sensor using the graph of FIG. 11, and the residual chlorine concentration of the sample water is the GREEN area of the RGB sensor can be measured using
  • the measuring unit 110 turns on the light emitting unit 111 in an empty state, stores the amount of light measured in the RED (about 750 nm wavelength) region with the light receiving unit 113, and sets it as a reference value of whether to fill or not, and the measuring unit 110 In the state in which the water is filled, the reagent is put into the sample water, the light emitting unit 111 is turned on, and then the amount of light is measured using the green region (560 nm wavelength) of the light receiving unit 113 .
  • FIG. 12 is a flowchart illustrating a method for measuring residual chlorine concentration according to the present invention. And, the residual chlorine concentration measuring method of the present invention uses the explosion-proof residual chlorine concentration measuring apparatus 100 disclosed in FIG.
  • the inlet valve 123 and the outlet valve 127 are opened to bypass the sample water (S110).
  • the bypassed sample water washes the sample water inlet pipe 121 , the sample water outlet pipe 125 , and the sample water inlet space of the measuring unit 110 .
  • the discharge valve 127 is closed to fill the measurement unit 110 with sample water (S120). Whether the number of samples is filled or not is determined by turning on the light emitting unit 111 and then measuring the amount of light from the light receiving unit 113 . When the sample water of a predetermined capacity is filled, the inlet valve 123 is closed.
  • a reference point is set by measuring the absorbance of the sample water without injecting a reagent into the filled sample water (S130). This reference point becomes the reference absorbance.
  • the discharge valve 127 is opened to discharge the sample number for which the reference absorbance measurement is completed from the measurement unit 110 , and after the discharge is completed, the discharge valve 127 is closed to inject a new sample number into the measurement unit 110 . do (S140).
  • the absorbance is measured by the measurement unit 110. Even after the discharge is confirmed, the discharge valve 127 is left open for a few more seconds and then closed, so that the number of samples is more reliable. to be expelled. Through this operation, it is possible to reduce the measurement error.
  • the inlet valve 123 is opened to fill the sample number. Whether the number of samples is filled is determined by the measurement unit 110 Check the absorbance. Then, when the sample water is filled, the opening/closing of the inlet valve 123 is repeatedly operated. For example, it is opened for about 0.5 seconds and then closed for about 0.5 seconds so that the sample water flows into the measuring unit 110 while forming a vortex. Through this operation, the incoming reagents are well mixed.
  • a reagent is injected into the replaced sample water (S150), and the color absorbance is measured in the measurement unit 110 (S160).
  • the reagent injection device ( 200) in the step of injecting the reagent (S150), the reagent injection device ( 200) to be operated for a short time, the reagent is well mixed in the measuring unit 110 while forming a vortex.
  • the control unit 150 converts the residual chlorine concentration based on the measured reference absorbance and color absorbance ( S170 ).
  • the control unit 150 converts the residual chlorine concentration based on the measured reference absorbance and color absorbance ( S170 ).
  • the standard absorbance measure the amount of light in the sample water without reagent added.
  • the color absorbance measure the light amount in the sample water in which the reagent is injected to find the difference in light amount, and then use an appropriate conversion formula. Convert to residual chlorine concentration.
  • multiplying the difference in light intensity by the value a gives the residual chlorine concentration. all.
  • the repeating operation is performed again from the step (S110) of bypassing the sample water in order to measure the residual chlorine concentration in the new sample water.
  • the control unit 150 has an intrinsically safe explosion-proof structure, and the inlet valve 123 , the outlet valve 127 , and the reagent injection device By operating 200 as the air control valve 170, the explosion-proof residual chlorine concentration measuring device 100 can satisfy the intrinsically safe explosion-proof structure as a whole.
  • the reagent injection device 200 operated by air pressure can prevent backflow of the liquid reagent by blocking 100% of both directions without a separate check valve, and has excellent durability.

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Abstract

La présente invention concerne un appareil antidéflagrant pour mesurer la concentration de chlore résiduel, l'appareil comprenant : une unité de mesure comprenant une partie d'émission de lumière et une partie de réception de lumière et comportant un tuyau d'entrée d'échantillon d'eau à travers lequel est introduit l'échantillon d'eau et un tuyau de refoulement d'échantillon d'eau à travers lequel est refoulé l'échantillon d'eau après l'achèvement de la mesure ; une unité de stockage de réactif comprenant un tuyau d'entrée de réactif de sorte à introduire un réactif dans l'unité de mesure ; une unité de commande qui, après que la lumière générée par la partie d'émission de lumière a traversé l'échantillon d'eau, mesure la concentration d'un oxydant dans l'échantillon d'eau sur la base d'un signal reçu par la partie de réception de lumière ; une soupape d'entrée et une soupape de refoulement installées respectivement dans le tuyau d'entrée d'échantillon d'eau et le tuyau de refoulement d'échantillon d'eau, chacune étant conçue comme une soupape à commande pneumatique ; et un dispositif d'injection de réactif installé dans le tuyau d'entrée de réactif de sorte à commander l'écoulement entrant d'un réactif, le tuyau d'entrée de réactif comprenant au moins un tuyau élastique constitué d'un matériau élastique, et le dispositif d'injection de réactif étant entraîné par l'air pour comprimer le tuyau élastique.
PCT/KR2021/014938 2020-10-26 2021-10-22 Appareil antidéflagrant pour mesurer la concentration de chlore résiduel WO2022092720A1 (fr)

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KR200148933Y1 (ko) * 1997-03-31 1999-06-15 소병택 수용액 정량공급펌프의 카트리지
JP2016176779A (ja) * 2015-03-19 2016-10-06 Ｊｆｅスチール株式会社 気相式水素透過試験装置および気相式水素透過試験装置の保護方法
KR101784704B1 (ko) * 2016-03-24 2017-10-12 (주) 테크로스 잔류 염소농도 측정장치 및 방법
KR20200053122A (ko) * 2018-11-08 2020-05-18 (주) 테크로스 방폭형 잔류 염소농도 측정장치
KR20200107285A (ko) * 2019-03-07 2020-09-16 (주) 테크로스 방폭형 잔류 염소농도 측정장치

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JP2008175283A (ja) 2007-01-18 2008-07-31 Miura Co Ltd ピンチバルブ
KR101888991B1 (ko) 2017-02-27 2018-08-16 (주) 테크로스 시약 주입 장치

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Publication number Priority date Publication date Assignee Title
KR200148933Y1 (ko) * 1997-03-31 1999-06-15 소병택 수용액 정량공급펌프의 카트리지
JP2016176779A (ja) * 2015-03-19 2016-10-06 Ｊｆｅスチール株式会社 気相式水素透過試験装置および気相式水素透過試験装置の保護方法
KR101784704B1 (ko) * 2016-03-24 2017-10-12 (주) 테크로스 잔류 염소농도 측정장치 및 방법
KR20200053122A (ko) * 2018-11-08 2020-05-18 (주) 테크로스 방폭형 잔류 염소농도 측정장치
KR20200107285A (ko) * 2019-03-07 2020-09-16 (주) 테크로스 방폭형 잔류 염소농도 측정장치

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