WO2018151338A1 - 수중 압력 측정 장치 - Google Patents
수중 압력 측정 장치 Download PDFInfo
- Publication number
- WO2018151338A1 WO2018151338A1 PCT/KR2017/001594 KR2017001594W WO2018151338A1 WO 2018151338 A1 WO2018151338 A1 WO 2018151338A1 KR 2017001594 W KR2017001594 W KR 2017001594W WO 2018151338 A1 WO2018151338 A1 WO 2018151338A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- filter
- pressure sensor
- pressure
- underwater
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/04—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges in the form of flexible, deformable tubes, e.g. Bourdon gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/0023—Fluidic connecting means for flowthrough systems having a flexible pressure transmitting element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0627—Protection against aggressive medium in general
- G01L19/0636—Protection against aggressive medium in general using particle filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
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- 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
- G01N1/16—Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
Definitions
- the present invention relates to an underwater pressure measuring device, and more particularly, at least two fluid inlet pipes communicating with a pressure sensor are provided outside the structure (or housing) in which the pressure sensor is accommodated.
- a filter By providing a filter, the high frequency disturbance component generated in the water outside the housing is removed by the filter, and the low frequency component of the disturbance is removed while passing through the fluid inlet tube, resulting in quasi-static pressure in which the low frequency and high frequency noise component of the disturbance is removed. It relates to an underwater pressure measuring device capable of measuring.
- pressure gauge is mainly used to measure the depth.
- the pressure gauge is attached to the outer surface of the structure (including the underwater vehicle) and the pressure gauge simultaneously receives the pressure received by the structure to measure the water pressure.
- Korean Patent Registration No. 10-1158413 discloses a radial variable differential (LVDT) for pressure measurement.
- LVDT radial variable differential
- This pressure-resistant radiation-resistant LCD is to measure the pressure under the conditions of high temperature and high pressure.
- stable pressure measurement is difficult because no means for removing low frequency high frequency disturbances generated outside of the structure is provided.
- An object of the present invention is to operate a strong current or thruster by measuring the quasi-static pressure in the state of removing the low frequency and high frequency components of various disturbances generated in the water outside the structure (structure or housing).
- the present invention provides a means for stably and accurately measuring pressure in water without being affected by vortices.
- the structure of the structure is separated from the outside and the inside is blocked the flow of fluid;
- a pressure sensor configured to measure the pressure of the fluid and installed inside the structure;
- two or more fluid entrance tubes disposed outside of the structure, wherein the high frequency and low frequency components of the disturbance generated in water when the fluid introduced into the fluid entrance tube through the filter acts on the pressure sensor. It is achieved by an underwater pressure measuring device, characterized in that it is removed during passage through the entry pipe.
- the structure is provided with a cover member for opening and closing the inside, the pressure sensor is installed on the cover member so that a portion is located outside the cover member, each end of the fluid inlet pipe is exposed to the outside pressure Fluid entering and exiting the sensor may be configured to act on the pressure sensor.
- the filter may be made of at least one material selected from a mesh body, a porous sponge, a fabric, a porous synthetic resin body, and a porous fiber.
- the filter may include: a first hollow connecting member rotatably coupled to the other end of the fluid access pipe and provided at the other end of the fluid access pipe; And a hollow second connector coupled to the filter by being fastened to the first connector or connected to the first connector.
- the cover member is provided with a plurality of fixing members for fixing the position and the bent state of the fluid access pipe and the filter, the fixing member is coupled to the coupling member is fastened or fitted; And a fixing end having a fitting groove for fitting the fluid access pipe or the filter thereinto may be formed.
- the low frequency removal unit for removing the low frequency while the fluid coming in and out may be curved or curved at right angles.
- two or more fluid inlet pipes having a filter are bent to the outside of the structure, and each end of the fluid inlet pipe is connected to a pressure sensor provided in the structure, whereby the outside of the structure is generated underwater.
- the fluid in the state in which the low frequency and high frequency components of the disturbance are removed acts on the pressure sensor, thereby providing the effect that the pressure sensor can measure the fluid pressure in a stable state.
- the filter is installed on the other end of each fluid entry pipe to remove the high frequency of disturbance, as well as to provide the effect of preventing foreign matter from entering the fluid entry pipe.
- the filter is provided at the other end of the fluid inlet pipe to be replaceable, it is possible to provide an effect that can be easily replaced or cleaned of the filter.
- the fluid entry pipe is bent freely and disposed on the cover member of the structure, it is possible to vary the structure of the structure or to provide an effect of coupling various structures to the cover member. That is, the shape of the structure can provide an effect that can be designed in a variety of structures.
- FIG. 1 is a perspective view showing an underwater pressure measuring apparatus according to the present invention.
- FIG. 2 is a schematic cross-sectional view showing the underwater pressure measuring apparatus shown in FIG. 1.
- FIG. 3 is a front view showing the underwater pressure measuring apparatus shown in FIG.
- Figure 4 is a front view showing another embodiment of the underwater pressure measuring device shown in FIG.
- cover member 30 pressure sensor
- the present invention is for measuring the pressure in water, and includes a structure of the structure that is separated from the outside and the inside is blocked the flow of fluid. And a pressure sensor configured to measure the pressure of the fluid and installed inside the structure.
- the fluid is formed in a hollow shape, each end is connected to the pressure sensor, each end is provided with a filter for blocking the inflow of foreign matter and remove the high frequency components of the disturbance, the structure is made of a free bending And two or more fluid inlets disposed outside of the filter, wherein a high frequency component and a low frequency component of disturbance generated in the water when the fluid introduced into the fluid inlet tube through the filter acts on the pressure sensor.
- the pressure sensor is able to measure quasi-static pressure.
- FIG. 1 is a perspective view showing an underwater pressure measuring apparatus according to the present invention
- Figure 2 is a schematic cross-sectional view showing the underwater pressure measuring apparatus shown in Figure 1
- Figure 3 shows the underwater pressure measuring apparatus shown in Figure 1 One front view.
- the underwater pressure device 10 for measuring the pressure in the water, the structure 20 of the structure in which the inflow of the fluid is blocked because the outside and the inside is separated And, it is configured to measure the pressure of the fluid and the pressure sensor 30 is installed in the interior of the structure 20, the fluid is formed in a hollow to enter, each end is connected to the pressure sensor 30, each other end It is provided with a filter 40 for blocking the inflow of foreign matter, it is made of a flexible material including two or more fluid inlet pipe 50 is disposed on the outside of the structure 20.
- the structure 20 is provided with the cover member 22 for opening and closing inside.
- the structure 20 is separated from the outside and the inside by the cover member 22 so that the fluid does not flow into the interior.
- the cover member 22 is provided with a plurality of fixing members 60 for fixing the position and the bent state of the fluid inlet pipe 50 and the filter 40 and preventing movement.
- the fixing member 60 has a coupling end 62 fastened to the cover member 22.
- the coupling end 62 has a pair of fixed ends 64 protruding upward to form a fitting groove 64A for fitting the fluid inlet pipe 50 or the filter 40. That is, one end of the fixing member 60 is coupled to the coupling end 62 is fastened to the cover member 22, the other end of the two fixed end 64 is formed to extend at a distance between each fixed end 64 In the fitting groove 64A is formed. Therefore, the fluid inlet pipe 50 can be inserted into the fitting groove 64A to fix its position.
- the pressure sensor 30 is installed on the cover member 22 so as to be located inside the structure 20, and has a structure in which a sensing unit (not shown) is provided inside the case 32.
- the pressure sensor 30 is installed on the cover member 22 so that a part thereof is located outside the cover member 22.
- Each end of the fluid inlet pipe 50 is coupled to a part of the pressure sensor 30 exposed to the outside of the structure 20. That is, each end of the fluid inlet pipe 50 is coupled to a part of the pressure sensor 30 so that the hydraulic pressure of the fluid introduced through the fluid inlet pipe 50 acts on the pressure sensor 30. Since the pressure sensor 30 for measuring the water pressure is a known structure, detailed description thereof will be omitted.
- the fluid inlet pipe 50 serves to guide the fluid outside the structure 20 to reach the pressure sensor 30, and to remove the high frequency or low frequency generated in the fluid flowing into the pressure sensor 30.
- the fluid inlet pipe 50 is formed in a hollow shape so that fluid can enter and exit. Each end of the fluid inlet pipe 50 is connected to the pressure sensor 30, the other end is coupled to the filter 40 for blocking the inflow of foreign matter.
- the fluid inlet pipe 50 is composed of two or more and is made of a material that is free to bend and disposed outside the structure 20.
- the fluid inlet pipe 50 may be made of a flexible material including a synthetic resin material, urethane, rubber material, or the like, and may be made of a metal pipe.
- the outer surface of the fluid inlet pipe 50 may be covered or coated or coated to cushion the shock transmitted from the outside. For example, by forming a buffer layer with urethane foam on the outer circumferential surface of the fluid access pipe 50 or by covering a rubber cover to form a shock absorbing member, various external forces including a disturbance generated in the water are applied to the fluid access pipe 50. ) To act on itself so as not to affect the fluid passing through the fluid inlet (50).
- the fluid inlet 50 is formed with one or more low frequency removing portions 52 that are curved in a curve.
- This low frequency removal part 52 is for removing the low frequency component of the disturbance which generate
- the low frequency remover in which the low frequency components of the fluid are multiplely bent It is removed while passing through 52. That is, in the case of the low frequency signal, since the wavelength is long, the low frequency signal is removed while passing through the multiple bent low frequency removing part 32 having the length of the fluid inlet pipe 50 lengthened.
- the low frequency removing unit 52 may be formed in various forms and a plurality of places by the fixing member 60 as shown in FIG.
- the fluid inlet pipe 50 in the present embodiment, but two, but is not limited to this, at least two, may be composed of three or more, that is, three to ten, if necessary. This is because when one of the fluid entry pipes 50 is damaged by an external force, or when the filter 40 provided at one end of the fluid entry pipe 50 is blocked by foreign matter, the fluid entry pipe 50 is connected to the fluid entry pipe 50. Since access is blocked, the role is to allow other fluid access pipes 50 to perform the role.
- the filter 40 is coupled to the other end of the fluid inlet pipe 50 to filter foreign matter contained in the fluid flowing into the fluid inlet pipe 50.
- the filter 40 serves to prevent cavitation, high frequency vortex, and the like at the inlet of the fluid inlet and outlet 50. In other words, while the fluid passes through the fine pores formed in the filter 40, high frequency, vortex, etc., including cavitation contained in the fluid can be removed.
- the filter 40 is made of one or more materials selected from a mesh body, a porous sponge, a fabric, a porous synthetic resin body, and a porous fiber. Or it may be composed of a porous sintered body to sinter the solid particles of 1mm or less in a specific form to form fine pores therebetween.
- the filter 40 is detachably coupled to the other end of the fluid inlet pipe 50 for easy replacement. That is, as shown in Figure 3, the filter 40 is replaceably coupled to the other end of the fluid inlet pipe (50).
- the hollow first connector 56 provided at the other end of the fluid access pipe 50 and the hollow coupled to the filter 40 are configured to be fastened or connected to the first connector 42.
- a second connecting member 44 of the mold Engagement protrusions are formed on one outer circumferential surface of the first connecting member 42 so that the coupling with the fluid inlet pipe 50 can be made firm. If necessary, the one end of the first connecting body 42 is inserted into the fluid access pipe 50 to tighten the fluid access pipe 50 with a clamp to secure the coupling with the first connecting body 42.
- an internal thread is formed on the inner diameter of the first connector 42, and a male thread is formed on one main surface of the second connector 44 to be coupled to each other in a screw fastening structure.
- a male thread is formed at one end of the second connector 44 and a filter 40 is coupled to the other end thereof.
- the operation of coupling or separating the filter 40 to the fluid inlet pipe 50 can be made easily and quickly.
- the filter 40 may be easily cleaned by the replacement structure.
- the underwater pressure measuring device 10 configured as described above is placed in the water (other fluid).
- the fluid When the structure 20 is located in the water, the fluid is introduced into the interior through the filter 40 provided at the ends of each fluid inlet pipe 50A, 50B.
- the fluid may be introduced into one fluid inlet 50A and act on the sensing unit of the pressure sensor 30, and then discharged through the other fluid inlet 50B. Of course, it can flow in the opposite direction to the above-described flow direction.
- the pressure sensor 30 measures the pressure of the fluid.
- the pressure sensor 40 is not exposed to the fluid from the outside of the structure 20, and the fluid acts on the sensing unit only through the fluid inlet pipes 50A and 50B. Therefore, the pressure sensor 30 can measure the accurate pressure in a stable state. That is, since the inside of the structure 20 is not in direct contact with the fluid, the influence of disturbance generated outside the structure 20 is minimized, so that the sensing unit of the pressure sensor 30 can measure the fluid pressure in a relatively stable state. .
- the fluid passes through each filter 40 provided at the ends of the fluid inlet pipe (50A, 50B) fluid outlet pipe (50A, 50B)
- the filter 40 is removed by interfering with the filter 40 when it is introduced into the filter.
- the fluid in which the high frequency component is removed by the filter 40 while being introduced into any one fluid inlet pipe 50A by the above-described process acts on the sensing unit of the pressure sensor 30 and then the other fluid inlet pipe 50B. It is discharged through the outside. That is, the fluid outside the structure 20 passes through the flow paths formed by the fluid inlet pipes 50A and 50B on both sides. In this way, the fluid flowing (passing) through the flow path formed by the fluid inlet pipes 50A and 50B acts on the sensing unit of the pressure sensor 40 connected to each end of the fluid inlet pipes 50A and 50B.
- the low frequency of the fluid flowing through the flow path (inside of the fluid access pipe) formed by the fluid access pipes 50A and 50B is removed while passing through the low frequency removing part 52 that is bent at a right angle or circular or curved. That is, when the fluid flows into the fluid inlet tube 50 through one fluid inlet tube 50A, acts on the sensing unit of the pressure sensor 30, and moves to the other fluid inlet tube 50B, the wavelength is The long low frequency component is removed while passing through the multiple bent low frequency removal unit 52. That is, in the case of the low frequency signal, since the wavelength is long, the low frequency signal may be removed while passing through the multiple bent low frequency removing part 32 having a long length of the fluid inlet and outlet 50.
- the fluid affected by the disturbance caused by various factors outside the structure 20 passes through the vortex removal unit 52 of the filter 40 and the fluid inlet pipe 50, thereby removing the high frequency component and the low frequency component. Since it acts on the sensing unit of the pressure sensor 40 in a stable state, the pressure sensed by the sensing unit becomes a quasi-static pressure from which the high frequency and low frequency components of the disturbance are removed.
- the pressure sensor 30 can stably measure the pressure of the fluid in the water where disturbances including vortices caused by various factors occur.
- such an underwater pressure measuring device 10 can be utilized in the underwater vehicle, in particular, remotely operated vehicle (ROV), it can be useful when static pressure measurement at the position where the flow velocity is strong.
- ROV remotely operated vehicle
- the underwater pressure measuring apparatus In the underwater pressure measuring apparatus according to the present invention, two or more fluid inlet pipes having a filter outside the structure are installed to be bent, and each end of the fluid inlet pipe is connected to a pressure sensor provided in the structure, so that The low-frequency and high-frequency components of the disturbance generated from the outside act on the pressure sensor so that the pressure sensor can measure the fluid pressure in a stable state. Therefore, the underwater pressure measuring apparatus according to the present invention can be utilized in ships or underwater moving bodies, in particular, unmanned submersible, can be useful in the case where static pressure measurement is required at a position where the flow velocity is strong and can be practically clearly implemented. It is an invention with industrial applicability as it exists.
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- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims (6)
- 수중에서 압력을 측정하기 위한 것으로서,외부와 내부가 구분되어 유체의 유입이 차단된 구조의 구조체;유체의 압력을 측정하도록 구성되어 상기 구조체의 내부에 설치되는 압력센서; 및유체가 출입되도록 중공형으로 형성되고, 각 일단은 상기 압력센서와 연결되며, 각 타단에는 이물질의 유입을 차단하고 외란의 고주파 성분을 제거하기 위한 필터가 구비되고, 구부러짐이 자유로운 재질로 이루어져 상기 구조체의 외부에 배치되는 2개 이상의 유체 출입관을 포함하고,상기 필터를 통하여 유체 출입관으로 유입된 유체가 상기 압력센서에 작용할 때 수중에서 발생된 외란의 고주파 성분과 저주파 성분이 상기 필터와 유체 출입관를 통과하는 동안 제거되는 것을 특징으로 하는 수중 압력 측정 장치.
- 제1항에 있어서,상기 구조체는,내부를 개폐하기 위한 커버부재를 구비하고, 상기 압력센서는 일부가 상기 커버부재의 외부에 위치하도록 상기 커버부재에 설치되며, 상기 유체 출입관의 각 일단은 외부로 노출된 상기 압력센서에 연결되어 출입되는 유체가 상기 압력센서에 작용하도록 된 것을 특징을 하는 수중 압력 측정 장치.
- 제1항에 있어서,상기 필터는,메쉬체, 다공성 스펀치, 직물, 다공성 합성수지체, 다공성 섬유 중에서 선택된 어느 하나 이상의 재질로 이루어지는 것을 특징으로 하는 수중 압력 측정장치.
- 제1항에 있어서,상기 필터는,상기 유체 출입관의 타단에 교체 가능하게 결합되되, 상기 유체 출입관의 타단에 마련되는 중공형의 제1 연결체; 및상기 제1 연결체에 체결되어 연결되거나 끼워져 연결되도록 구성되어 상기 필터에 결합되는 중공형의 제2 연결체로 이루어지는 것을 특징으로 하는 수중 압력 측정장치.
- 제2항에 있어서,상기 커버부재에는,상기 유체 출입관과 상기 필터의 위치 및 구부러진 상태를 고정하기 위한 다수개의 고정부재가 마련되고, 상기 고정부재는, 상기 커버부재에 체결되거나 끼워지는 결합단; 및 상기 유체 출입관이나 상기 필터가 끼워지기 위한 끼움홈이 형성된 고정단이 형성되는 것을 특징으로 하는 수중 압력 측정장치.
- 제1항 내지 제5항 중 어느 한 항에 있어서,상기 유체 출입관에는,출입되는 유체가 간섭되면서 저주파가 제거되도록 하기 위한 저주파 제거부가 곡선이나 직각으로 굴곡되어 형성되는 것을 특징으로 하는 수중 압력 측정장치.
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KR1020177035700A KR102639766B1 (ko) | 2017-02-14 | 2017-02-14 | 수중 압력 측정 장치 |
PCT/KR2017/001594 WO2018151338A1 (ko) | 2017-02-14 | 2017-02-14 | 수중 압력 측정 장치 |
US15/740,464 US10502647B2 (en) | 2017-02-14 | 2017-02-14 | Apparatus for measuring underwater pressure |
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PCT/KR2017/001594 WO2018151338A1 (ko) | 2017-02-14 | 2017-02-14 | 수중 압력 측정 장치 |
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2017
- 2017-02-14 US US15/740,464 patent/US10502647B2/en active Active
- 2017-02-14 WO PCT/KR2017/001594 patent/WO2018151338A1/ko active Application Filing
- 2017-02-14 KR KR1020177035700A patent/KR102639766B1/ko active IP Right Grant
Patent Citations (5)
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JP2003004569A (ja) * | 2001-06-25 | 2003-01-08 | Yokogawa Electric Corp | 圧力測定装置及び圧力発生装置 |
KR20080048825A (ko) * | 2006-11-29 | 2008-06-03 | (주)동림산업 | 수위측정장치 |
KR20090055884A (ko) * | 2007-11-29 | 2009-06-03 | 한국해양연구원 | 차동형 수중 압력 측정 장치 |
KR20120058332A (ko) * | 2010-11-29 | 2012-06-07 | 국방과학연구소 | 수중 정적압력 측정장치 및 측정방법 |
KR101441496B1 (ko) * | 2013-06-21 | 2014-09-18 | 한국해양과학기술원 | 유압시스템을 구비하는 수중로봇의 유압상태 계측장치 |
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US20180372569A1 (en) | 2018-12-27 |
US10502647B2 (en) | 2019-12-10 |
KR102639766B1 (ko) | 2024-02-21 |
KR20190108661A (ko) | 2019-09-25 |
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