WO2021010186A1 - ガス測定装置用サンプリングプローブ - Google Patents

ガス測定装置用サンプリングプローブ Download PDF

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Publication number
WO2021010186A1
WO2021010186A1 PCT/JP2020/026153 JP2020026153W WO2021010186A1 WO 2021010186 A1 WO2021010186 A1 WO 2021010186A1 JP 2020026153 W JP2020026153 W JP 2020026153W WO 2021010186 A1 WO2021010186 A1 WO 2021010186A1
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WO
WIPO (PCT)
Prior art keywords
probe
sampling probe
steady rest
sampling
flue
Prior art date
Application number
PCT/JP2020/026153
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English (en)
French (fr)
Japanese (ja)
Inventor
温子 千田
Original Assignee
株式会社島津製作所
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 株式会社島津製作所 filed Critical 株式会社島津製作所
Priority to JP2021532786A priority Critical patent/JP7294423B2/ja
Priority to CN202080046039.0A priority patent/CN114072655B/zh
Publication of WO2021010186A1 publication Critical patent/WO2021010186A1/ja

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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
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
    • 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
    • G01N1/22—Devices for withdrawing samples in the gaseous state

Definitions

  • the present invention relates to a sampling probe for a gas measuring device.
  • the sampling probe has a tubular body, and has a sampling port for collecting the exhaust gas in the flue at one end of the body and a discharge port for discharging the exhaust gas to the detector side at the other end.
  • a sampling probe is used by inserting it into a hole provided in the wall of the flue through which the exhaust gas passes from the end on the sampling port side.
  • the concentration of the components of the exhaust gas differs depending on the position in the flue, so that the position of the hole and the length of inserting the sampling probe from the hole (insertion) so that the sampling port is located at a predetermined position in the flue. Chief) is determined.
  • the outer diameter of the sampling probe is about several cm, but the insertion length may reach several m to ten m (several hundred cm to 1,000 cm) depending on the size of the flue.
  • the insertion length is increased in this way, the force received by the sampling probe from the exhaust gas flowing in the flue increases.
  • a Karman vortex is formed behind the sampling probe, and the sampling probe vibrates due to this Karman vortex.
  • the frequency of this vibration matches the natural frequency of the tube of the sampling probe, the sampling probe resonates. When such a large force is applied or resonance occurs, the sampling probe may be broken.
  • the outer diameter of the sampling probe is increased so as to cover the periphery of the sampling probe except for the sampling port.
  • a guide pipe having a large inner diameter and a length slightly shorter than the insertion length is provided on the inner surface side of the wall of the flue.
  • the sampling port at the tip of the sampling probe cannot be covered with a guide pipe, that part receives the force of the exhaust gas flow. Since the tip has a long distance from the fixed part, the bending moment becomes large even with a small force, and the sampling probe flexes greatly. In addition, the sampling probe vibrates due to the flow of exhaust gas and the force received from the Karman vortex generated behind the flow. When this vibration approaches the natural frequency of the sampling probe, it resonates and may bend significantly.
  • the stopper Since the stopper is attached for the above purpose, it is desirable to make the gap between the sampling probe and the guide pipe as small as possible.
  • the guide pipe since the guide pipe is provided inside the flue, it is usually installed by an installation body such as a boiler or an incinerator or a maintenance body thereof (hereinafter, these are referred to as "users").
  • sampling probes are manufactured by analyzer manufacturers so that they can be used in various situations. Therefore, it is difficult to attach a stopper to the sampling probe that makes the gap between the sampling probe and the guide pipe zero. Therefore, there is a problem that the sampling probe still has a bending force.
  • An object to be solved by the present invention is to provide a sampling probe for a gas measuring device that can suppress deterioration when inserted into a guide pipe provided in a flue and used.
  • the present invention made to solve the above problems is a sampling probe for a gas measuring device inserted into a guide pipe.
  • Tubular probe body and It is provided with a steady rest member provided on the outer surface of the probe body.
  • the steady rest member has a first member and a second member which is arranged in series with the first member and has a higher elastic modulus than a material constituting the first member.
  • the steady rest member since the steady rest member has a second member having a higher elastic modulus than the first member together with the first member, it is inserted into a guide pipe provided in the flue. Even if the inner diameter of the guide pipe and the position of the sampling probe with respect to the guide pipe are slightly different from those assumed by the analyzer manufacturer, the second member expands and contracts, so that the steady rest member and the guide are used. It is possible to eliminate the gap with the inner surface of the pipe. This makes it possible to handle various guide pipes, further suppress the influence of bending and vibration due to the flow of exhaust gas, and suppress deterioration of the sampling probe.
  • FIG. 6 is a cross-sectional view showing a state in which the steady rest member of the modified example shown in FIG. 6 is attached to the flue.
  • FIG. 6 is a cross-sectional view of a sampling probe of a modified example shown in FIG. 8A.
  • FIG. 1 shows a schematic configuration diagram of the sampling probe 10 of the present embodiment.
  • the sampling probe 10 has a probe body 11, a flange 12, and a steady rest member 13.
  • the probe body 11 is a linear tubular member having a sampling port 111 for collecting exhaust gas from the flue at one end and a gas measuring device for collecting exhaust gas from the sampling port 111 at the other end. It has a discharge port 112 for discharging to the detector of.
  • stainless steel can be used as the material of the probe body 11, but the present invention is not limited to this.
  • the outer diameter of the probe body 11 is usually several cm, but this is also not limited to this in the present invention.
  • the length of the probe main body 11 is appropriately determined in consideration of the measurement position in the flue, that is, the distance from the position where the exhaust gas is collected to the wall of the flue.
  • the flange 12 is provided with a hole 122 in the outer peripheral portion of the disk 121 into which a bolt for fixing to the flue side flange 93 provided in the flue 91 is inserted as described later.
  • a hole is provided in the center of the disk 121, and by screwing the probe body 11 into this hole, the flange 12 is fixed to the outer surface 113 of the probe body 11 near the end near the discharge port 112 in the longitudinal direction. ing.
  • the steady rest member 13 is fixed to the outer surface 113 of the probe main body 11 closer to the sampling port 111 than the flange 12.
  • the steady rest members 13 are provided at two locations at intervals in the longitudinal direction of the probe main body 11, but may be provided at only one location or at three or more locations.
  • the steady rest member 13 has a first member 1301 and a second member 1302.
  • the first member 1301 is provided so as to project from a part of the outer surface 113 of the probe main body 11, and the second member 1302 is provided on the side of the first member 1301 opposite to the outer surface 113. ..
  • the first member 1301 and the second member 1302 are schematically shown in FIG. 1, specifically, for example, the configuration shown in FIG. 2 can be adopted.
  • FIG. 2 shows a state in which the steady rest member 13 is attached to the probe main body 11 in a cross section perpendicular to the longitudinal direction of the tube of the probe main body 11 (AA cross section in FIG. 1).
  • the steady rest member 13 has a semicircular portion 1304 having a shape in which two plate members 1303 are bent into a semicircular shape (partially circular) along the outer surface 113 of the probe main body 11 in the AA cross section, and from both ends of the semicircle. It is formed into a shape having protrusions 1305 and 1306 protruding in a direction perpendicular to the outer surface 113, respectively.
  • both plate members 1303 are fixed to each other by binding the portion where the protrusion 1305 and the protrusion 1306 are overlapped with the wire 1307.
  • both plate materials 1303 may be fixed to each other by using a screw, an adhesive or the like instead of the wire 1307.
  • the one in which the protruding portion 1305 and the protruding portion 1306 are overlapped corresponds to the first member 1301.
  • two first members 1301 are provided at intervals of 180 ° in the circumferential direction of the outer surface 113 of the probe main body 11.
  • a second member 1302 made of a leaf spring is attached to each of the tips of these two first members 1301.
  • the second member 1302 is fixed to the first member 1301 by sandwiching a part of the leaf spring between the protruding portions 1305 and 1306 of both plate members 1303.
  • a plate-shaped member having a higher elastic modulus (higher flexibility and lower rigidity) than the plate member 1303 can be used.
  • the two plate members 1303 are overlapped, so that the one plate member 1303 has a higher elastic modulus (higher flexibility and lower rigidity) than the first member 1301.
  • the second member 1302 one plate-shaped member of the same type as the plate material 1303 (having the same elastic modulus and flexibility) may be used.
  • a guide pipe 92 penetrating the wall 911 of the flue 91 through which the exhaust gas to be measured flows is arranged in advance so that one end is inside the flue 91 and the other end is outside the flue 91. It is attached to 911. Further, the flue side flange 93 is attached to the end of the guide pipe 92 outside the flue 91.
  • the flue side flange 93 is provided with a hole at a position corresponding to the hole 122 of the flange 12 of the sampling probe 10.
  • the length of the guide pipe 92 is set to be slightly shorter than the distance between the sampling port 111 of the sampling probe 10 and the surface of the flange 12 on the flue 91 side.
  • the inner diameter of the guide pipe 92 is longer than the distance between the tips of the two first members 1301 of the steady rest member 13, and the second member 1302 attached to the tips of these two first members 1301 It may be within a range shorter than the distance between the tips of the second member 1302 in the extended state (no load state).
  • the position where the guide pipe 92 is inserted into the wall 911 of the flue 91 and the length of insertion into the flue 91 from that position are such that the sampling port 111 is inside the flue 91 when the sampling probe 10 is installed as described below. It is set to be placed in a predetermined position.
  • the probe main body 11 is inserted into the guide pipe 92 from the outer end of the flue 91, and the flange 12 of the sampling probe 10 is bolted to the flue side flange 93.
  • the sampling probe 10 smokes in a state where the sampling port 111 is arranged at a predetermined position in the flue 91 and the periphery of the probe main body 11 except for the vicinity of the sampling port 111 is covered with the guide pipe 92. It is attached to the road 91.
  • the inner diameter of the guide pipe 92 is within a range longer than the distance between the tips of the two first members 1301 and shorter than the distance between the tips of the two extended second members 1302.
  • the second member 1302 comes into contact with the inner surface of the guide pipe 92 in a compressed state (the leaf spring is bent) (FIG. 4).
  • the inner diameter of the guide pipe 92 prepared by the user and the mounting position of the sampling probe 10 with respect to the guide pipe 92 are slightly different from those assumed by the analyzer manufacturer.
  • the second member 1302 can be brought into contact with the inner surface of the guide pipe 92.
  • the gas measuring device collects the exhaust gas in the flue 91 from the sampling port 111 and introduces it into the detector via the pipe of the probe main body 11 and the discharge port 112. Then, the concentration of a predetermined component contained in the exhaust gas is measured. Since this measurement can be performed by the same method as the conventional method, detailed description thereof will be omitted.
  • the second member 1302 can be brought into contact with the inner surface of the guide pipe 92, the gap between the steady rest member 13 and the inner surface of the guide pipe 92 can be eliminated. As a result, even if the probe main body 11 receives a force due to the flow of the exhaust gas in the flue 91, the probe main body 11 is less likely to bend or vibrate. Therefore, deterioration / damage of the sampling probe 10 can be suppressed.
  • the fact that the steady rest member 13 is in contact with the inner surface of the guide pipe 92 and the probe main body 11 is less likely to bend corresponds to an increase in the rigidity of the probe main body 11.
  • the vibration frequency becomes higher than when the steady rest member 13 is not provided. Therefore, by adding the steady rest member 13 to the conventional sampling probe in which resonance is generated by the force received from the exhaust gas, the vibration frequency deviates from the natural frequency, so that resonance can be prevented.
  • FIG. 3 shows an example in which the guide pipe 92 is attached to the wall 911 so that its longitudinal direction is perpendicular to the wall 911 of the flue 91, as shown in FIG. 5, the flue of the guide pipe 92 is shown.
  • the guide pipe 92 may be tilted and attached to the wall 911 so that the end inside the 91 is below the end outside the flue 91.
  • sampling probe according to the present invention is not limited to the above embodiment, and various modifications are possible. Although some modifications are shown below, it goes without saying that the present invention is not limited to the above-described embodiments and these modifications.
  • a part of the second member (leaf spring) 1302 is fixed to the first member 1301 by sandwiching it between the protruding portions 1305 and 1306 of the two plate members 1303, but the protruding portion 1305 A part of the second member 1302 may be fixed to either one or both of 1306 by adhesion, welding, screwing or the like.
  • the steady rest member 131 shown in FIG. 6 can be used.
  • the steady rest member 131 includes a semicircular portion 1314 having a shape in which two plate members 1313 are bent in a semicircular shape along the outer surface 113 of the probe main body 11 in the AA cross section shown in FIG. 1, and both ends of the semicircle. It has protrusions 1315 and 1316 that project in a direction perpendicular to the outer surface 113, respectively.
  • the steady rest member 131 As for the steady rest member 131, a combination of the semicircular portions 1314 of these two plate materials 1313 goes around the outer surface 113 once, and the protruding portion 1315 of one plate material 1313 and the protruding portion 1316 of the other plate material 1313 are overlapped with each other. It is attached to the probe body 11.
  • the points described so far are the same as the configuration and mounting method of the steady rest member 13.
  • the steady rest member 131 of FIG. 6 is different from the steady rest member 13 in that one protruding portion 1315 of the plate member 1313 is longer than the other protruding portion 1316 and protrudes to the opposite side to the outer surface 113. doing.
  • the steady rest member 131 is also different from the steady rest member 13 in that it does not have a second member separate from the plate member 1313.
  • the portion where the protruding portion 1315 of one plate material 1313 and the protruding portion 1316 of the other plate material 1313 overlap corresponds to the first member 1311, and the protruding portion of the other plate material 1313 of the protruding portions 1315.
  • the portion that does not overlap with 1316 and protrudes to the opposite side of the probe main body 11 corresponds to the second member 1312.
  • the steady rest member 131 of this modified example can be installed in the flue 91 by the same method as the steady rest member 13 in the sampling probe 10 of the above embodiment (see FIG. 7).
  • two steady rest members 13 are provided at one location in the longitudinal direction of the probe main body 11, but the steady rest member 13 may be at least one or three.
  • the above may be provided.
  • the force received from the exhaust gas flow by attaching the steady rest member 13 to the flue 91 so that the steady rest member 13 is arranged on the downstream side of the exhaust gas flow in the flue 91. It is possible to suppress the bending of the probe main body 11 due to the above.
  • the plate member 1303 When only one steady rest member 13 is provided for each location in the longitudinal direction, the plate member 1303 is bent into a full circle instead of being bent into a semicircle, and both ends are projected in a direction perpendicular to the outer surface 113 of the probe main body 11. Just do it. Further, when three steady rest members 13 are provided at one location in the longitudinal direction, three plate members 1303 are prepared by bending the plate member 1303 into a partial circle and projecting both ends in a direction perpendicular to the outer surface 113 of the probe main body 11. Then, the partial circles of the three plate members 1303 may be combined to form one circle.
  • the angle of the partial circular shape of each plate material 1303 may be 120 °, or may be different for each plate material 1303. The same applies to the case where four or more steady rest members 13 are provided at one location in the longitudinal direction.
  • another spring such as a string-wound spring may be used instead of the leaf spring, or an elastic body other than the spring such as rubber may be used as long as it has heat resistance in the usage environment.
  • the second member 1302 is provided on the side of the first member 1301 opposite to the outer surface 113 of the probe main body 11, but the first member 1302 is like the steady rest member 132 shown in FIGS. 8A and 8B.
  • a second member 1322 may be provided between the member 1321 and the outer surface 113 of the probe body 11.
  • a sampling probe for a gas measuring device inserted into a guide pipe Tubular probe body and It is provided with a steady rest member provided on the outer surface of the probe body.
  • the steady rest member has a first member and a second member which is arranged in series with the first member and has a higher elastic modulus than a material constituting the first member.
  • the steady rest member since the steady rest member has a second member having a higher elastic modulus than the first member together with the first member, the inside of the guide pipe provided in the flue Even if the inner diameter of the guide pipe and the position of the sampling probe with respect to the guide pipe are slightly different from those assumed by the analyzer manufacturer, the second member expands and contracts to prevent the steady rest member. It is possible to eliminate the gap between the pipe and the inner surface of the guide pipe. This makes it possible to handle various guide pipes, further suppress the influence of bending and vibration due to the flow of exhaust gas, and suppress deterioration of the sampling probe.
  • the sampling probe for a gas measuring device is the sampling probe for a gas measuring device according to the first item.
  • the first member projects from the outer surface of the probe body and
  • the second member is provided on the outside of the first member with reference to the probe body.
  • the steady rest member is more stable. It can be held on the outer surface of the probe body.
  • the sampling probe for a gas measuring device is the sampling probe for a gas measuring device according to the second aspect.
  • the first member is a stack of two plate-shaped protrusions protruding from the outer surface of the probe body.
  • the second member is a leaf spring sandwiched between the two protruding portions.
  • a steady rest device can be formed by a simple structure of a protruding portion composed of two plate materials and a leaf spring.
  • the sampling probe for a gas measuring device is the sampling probe for a gas measuring device according to the third item.
  • Two or more steady rests are provided, One of the two protrusions is connected to one of the two protrusions in the other steady rest by a plate material bent along the outer surface.
  • one of the two protrusions constituting the first member and one of the two protrusions constituting the other first member are the probe main body. Since it is configured as an integral part together with the plate material bent along the outer surface, the number of parts of the steady rest member can be reduced.
  • the sampling probe for a gas measuring device is the sampling probe for a gas measuring device according to the second aspect.
  • the first member is a stack of two plate-shaped protrusions protruding from the outer surface of the probe body. In the second member, one of the two projecting portions protrudes from the other on the side opposite to the outer surface.
  • the steady rest member can be formed by a simple configuration. it can.
  • the sampling probe for a gas measuring device is the sampling probe for a gas measuring device according to the fifth aspect.
  • Two or more steady rest members are provided.
  • One of the two protrusions is connected to the other of the two protrusions of the other steady rest member by a plate material bent along the outer surface of the probe body. ..
  • the one of the two protrusions constituting the first member and the other of the two protrusions constituting the other first member are probes. Since it is integrated with the plate material bent along the outer surface of the main body, the number of parts of the steady rest member can be reduced.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
PCT/JP2020/026153 2019-07-17 2020-07-03 ガス測定装置用サンプリングプローブ WO2021010186A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2021532786A JP7294423B2 (ja) 2019-07-17 2020-07-03 ガス測定装置用サンプリングプローブ
CN202080046039.0A CN114072655B (zh) 2019-07-17 2020-07-03 气体测定装置用采样探针

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-132130 2019-07-17
JP2019132130 2019-07-17

Publications (1)

Publication Number Publication Date
WO2021010186A1 true WO2021010186A1 (ja) 2021-01-21

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Application Number Title Priority Date Filing Date
PCT/JP2020/026153 WO2021010186A1 (ja) 2019-07-17 2020-07-03 ガス測定装置用サンプリングプローブ

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JP (1) JP7294423B2 (enrdf_load_stackoverflow)
CN (1) CN114072655B (enrdf_load_stackoverflow)
WO (1) WO2021010186A1 (enrdf_load_stackoverflow)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52155086U (enrdf_load_stackoverflow) * 1976-05-20 1977-11-25
JPS57171241A (en) * 1981-04-15 1982-10-21 Toshiba Corp Gas component measuring apparatus
JPS6110741A (ja) * 1984-06-26 1986-01-18 Horiba Ltd サンプリング配管
JP2002014017A (ja) * 2000-06-28 2002-01-18 New Cosmos Electric Corp ガス検知器用ノズル
US20080307901A1 (en) * 2005-12-10 2008-12-18 Jeremy Knight Gas Probes
JP2014202120A (ja) * 2013-04-04 2014-10-27 カルソニックカンセイ株式会社 排気系構造
JP2015175650A (ja) * 2014-03-13 2015-10-05 中国電力株式会社 排ガス採取器具及びアンモニア採取方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4323412B2 (ja) * 2004-11-02 2009-09-02 株式会社ミツトヨ 表面性状測定用探針およびこれを用いた顕微鏡
WO2007066622A1 (ja) * 2005-12-05 2007-06-14 Nhk Spring Co., Ltd. プローブカード
EP2175999B1 (en) * 2007-06-21 2017-01-04 Gen-Probe Incorporated Receptacles for use in performing processes
JP2014092383A (ja) * 2012-11-01 2014-05-19 Shimadzu Corp サンプリングプローブ
JP5969929B2 (ja) * 2013-01-29 2016-08-17 日立Ｇｅニュークリア・エナジー株式会社 アイソカイネティックプローブ
CN204903376U (zh) * 2015-08-06 2015-12-23 株式会社岛津制作所 气体分析装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52155086U (enrdf_load_stackoverflow) * 1976-05-20 1977-11-25
JPS57171241A (en) * 1981-04-15 1982-10-21 Toshiba Corp Gas component measuring apparatus
JPS6110741A (ja) * 1984-06-26 1986-01-18 Horiba Ltd サンプリング配管
JP2002014017A (ja) * 2000-06-28 2002-01-18 New Cosmos Electric Corp ガス検知器用ノズル
US20080307901A1 (en) * 2005-12-10 2008-12-18 Jeremy Knight Gas Probes
JP2014202120A (ja) * 2013-04-04 2014-10-27 カルソニックカンセイ株式会社 排気系構造
JP2015175650A (ja) * 2014-03-13 2015-10-05 中国電力株式会社 排ガス採取器具及びアンモニア採取方法

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CN114072655B (zh) 2024-08-27
JP7294423B2 (ja) 2023-06-20
CN114072655A (zh) 2022-02-18
JPWO2021010186A1 (enrdf_load_stackoverflow) 2021-01-21

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