WO2012169202A1 - Compteur de gaz - Google Patents

Compteur de gaz Download PDF

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Publication number
WO2012169202A1
WO2012169202A1 PCT/JP2012/003744 JP2012003744W WO2012169202A1 WO 2012169202 A1 WO2012169202 A1 WO 2012169202A1 JP 2012003744 W JP2012003744 W JP 2012003744W WO 2012169202 A1 WO2012169202 A1 WO 2012169202A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
filter
flow rate
inflow
gas
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2012/003744
Other languages
English (en)
Japanese (ja)
Inventor
真人 佐藤
裕史 藤井
行則 尾崎
明久 足立
裕治 中林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
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 Panasonic Corp filed Critical Panasonic Corp
Publication of WO2012169202A1 publication Critical patent/WO2012169202A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/12—Cleaning arrangements; Filters
    • G01F15/125—Filters

Definitions

  • the present invention relates to a gas meter that reduces dust inflow to a flow rate measuring unit.
  • this type of gas meter is provided with a filter for removing foreign substances on the upstream side of the flow rate measuring unit (see, for example, Patent Document 1).
  • FIG. 2 shows a conventional gas meter described in Patent Document 1.
  • the gas meter 101 has an inlet 102 and an outlet 103, and inside the gas meter 101, a filter 104, a shut-off valve 105, a downward channel 106, and a flow rate measurement.
  • the horizontal flow path 107 in which the portion is disposed and the upward flow path 108 are continuously connected, and these are arranged between the inflow port 102 and the outflow port 103.
  • the present invention solves the above-described conventional problems, and provides a gas meter that reduces the inflow of dust into the flow rate measuring unit without causing a large increase in pressure loss even after a long period of time. is there.
  • a gas meter includes a housing, a gas inflow portion and an outflow portion provided in the housing, a gas inlet portion and an outlet portion disposed in the housing.
  • a flow rate measuring unit having a filter disposed inside the housing, wherein the flow rate measuring unit has the inlet portion opened in the housing, the outlet portion connected to the outflow portion, and the filter. Divides the inflow portion and the inlet portion and has an area larger than that of the inlet portion.
  • the flow of the gas flowing in from the inflow portion can be once opened to a wide space in the gas meter housing to slow down the flow velocity and facilitate the falling of dust, and further before entering the flow measurement portion.
  • the dust collection efficiency is increased, and a large increase in pressure loss due to accumulation of dust over a long period of time is less likely to occur. This can reduce dust inflow to the flow rate measuring unit.
  • the gas meter of the present invention can reduce the inflow of dust into the flow rate measuring unit by reducing the flow velocity and using a wide area filter. Further, it is difficult for pressure loss to increase due to dust accumulation in the filter over a long period of time.
  • FIG. 1A is a vertical sectional view of a gas meter according to Embodiment 1.
  • FIG. 1B is an AA ′ arrow view of FIG. 1A.
  • 2 is a vertical sectional view of a conventional gas meter.
  • a housing a gas inflow portion and an outflow portion provided in the housing, a flow rate measuring portion disposed in the housing and having a gas inlet portion and an outlet portion, and the interior of the housing
  • the flow rate measuring unit has an inlet portion that opens into the housing, the outlet portion is connected to the outflow portion, and the filter includes the inflow portion and the inlet portion.
  • the second invention is characterized in that, in the first invention, in particular, the filter is disposed horizontally between the flow rate measuring section and the inflow section.
  • the gas flowing in from the inflow portion flows out into the housing in the horizontal direction.
  • FIG. 1A shows a vertical cross-sectional view of the gas meter in the first embodiment.
  • FIG. 1B is an AA ′ arrow view of FIG. 1A.
  • FIG. 1 is a gas meter.
  • the housing 2 of the gas meter 1 has an inflow portion 3 and an outflow portion 4.
  • An inflow pipe 5 is connected to the inflow portion 3, and an outflow pipe 6 is connected to the outflow portion 4.
  • a shutoff valve 7 is connected to the inflow portion 3 inside the housing 2.
  • An inlet end 8 of the shut-off valve 7 is connected to the inflow portion 3, and an outlet end 9 is opened inside the housing 2.
  • a flow rate measuring unit 10 is disposed inside the housing 2.
  • the flow rate measuring part 10 has an inlet part 11 and an outlet part 12, the inlet part 11 is open to the inside of the housing 2, and the outlet part 12 is connected to the outflow part 4 via the connection part 13. Yes.
  • the flow rate measuring unit 10 includes, for example, a method for measuring a flow rate with ultrasonic waves, and a device for measuring a flow rate with a flow sensor. Further, the flow rate measuring unit 10 includes a unit that measures with ultrasonic waves and divides the inside of the flow path into a plurality of pieces with a plate.
  • the filter 14 is disposed inside the housing 2.
  • the filter 14 is disposed at a position that partitions the inflow portion 3 and the inlet portion 11 of the flow rate measurement unit 10.
  • the area of the filter 14 is set to be larger than the area of the inlet portion 11 of the flow rate measuring unit 10.
  • the filter 14 extends horizontally from the left side surface 15 to the right side surface 16 of the housing 2 between the inflow portion 3 and the flow rate measurement portion 10 with a full width in the depth direction of the housing 2. It arrange
  • the filter 14 is disposed at a position where the flow from the inflow portion 3 to the inlet portion 11 of the flow rate measuring portion 10 always passes.
  • the area of the filter 14 is sufficiently larger than the area of the inlet 11 of the flow rate measuring unit 10.
  • the gas inflow direction from the shutoff valve 7 to the inside of the housing 2 is configured to be a horizontal direction.
  • the gas flowing in from the inflow pipe 5 enters from the inlet 3 through the inlet end 8 of the shut-off valve 7, and then is discharged from the outlet end 9 into the internal space of the housing 2. Since the cross-sectional area of the flow path formed in the internal space is sufficiently wider than that of the inflow portion 3, the flow rate of the gas becomes slow, and a part of the dust contained in the gas falls here.
  • the filter 14 Since the filter 14 is arranged inside the housing 2 so as to partition the inside, the flow P1 discharged from the outlet end 9 of the shut-off valve 7 becomes a flow like P2 and P3 and the filter 14 is passed through. pass. Since the area of the filter 14 is sufficiently larger than the area of the inlet portion 11 of the flow rate measuring unit 10, the passage flow velocity in the filter 14 is small, and the dust collection efficiency can be increased.
  • the pressure loss is extremely small.
  • the filter since the filter is configured in the entire horizontal plane area inside the housing 2, even if dust accumulates in the filter 14 over a long period of time, the flow is a portion where dust is accumulated. Because it avoids and flows through a portion with less loss, it can be easily inferred that the pressure loss is much lower than a filter with a small area provided at the inlet of the shut-off valve as shown in the conventional example. Is.
  • the gas inflow direction to the inside of the housing 2 to be the horizontal direction
  • the gas flowing into the housing 2 diffuses to the left and right and does not pass through the filter 14 directly. It is possible to reduce concentration on a specific part.
  • the flow of the gas flowing in from the inflow portion is once opened to a wide space in the housing 2 of the gas meter so as to slow the flow rate and facilitate the fall of dust.
  • the dust collection efficiency is improved and the pressure loss due to accumulation of dust over a long period of time is large. Without increasing, the inflow of dust into the flow rate measuring unit 10 can be reduced by these comprehensive effects.
  • the filter 14 is configured to be partitioned over the entire interior of the housing 2.
  • the present invention is not limited to this.
  • a bag-like filter is disposed at the inlet 11 of the flow rate measuring unit 10. The structure etc. to perform are also possible.
  • shut-off valve is added to the constituent elements in the present embodiment, the same effect is exhibited even without the shut-off valve.
  • the gas meter according to the present invention can reduce the inflow of dust into the flow rate measuring unit without increasing the pressure loss due to accumulation of dust over a long period of time. It can be applied to a wide range of applications from large gas meters to commercial use.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne un compteur de gaz (1) comprenant : un boîtier (2) ; une section d'arrivée de gaz (3) et une section d'évacuation (4) disposées dans le boîtier ; un débitmètre (10) disposé à l'intérieur du boîtier et doté d'une section d'entrée de gaz (11) et d'une section de sortie de gaz (12) ; et un filtre (14) disposé à l'intérieur du boîtier. Le débitmètre est disposé dans une position telle que la section d'entrée débouche sur l'intérieur du boîtier et que la section de sortie est raccordée à la section d'évacuation. Le filtre divise la section d'arrivée et la section d'entrée et possède une surface supérieure à la section d'entrée.
PCT/JP2012/003744 2011-06-10 2012-06-07 Compteur de gaz Ceased WO2012169202A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011129900A JP2014157017A (ja) 2011-06-10 2011-06-10 ガスメータ
JP2011-129900 2011-06-10

Publications (1)

Publication Number Publication Date
WO2012169202A1 true WO2012169202A1 (fr) 2012-12-13

Family

ID=47295785

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/003744 Ceased WO2012169202A1 (fr) 2011-06-10 2012-06-07 Compteur de gaz

Country Status (2)

Country Link
JP (1) JP2014157017A (fr)
WO (1) WO2012169202A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2813824A1 (fr) * 2013-06-12 2014-12-17 Itron GmbH Compteur de gaz et piège à particules
CN104833400A (zh) * 2014-02-07 2015-08-12 霍尼韦尔国际公司 灰尘减少的空气流传感器
CN107167204A (zh) * 2017-07-05 2017-09-15 上海埃科燃气测控设备有限公司 一体化ic卡气体腰轮流量计量箱
WO2020097515A1 (fr) * 2018-11-10 2020-05-14 Itron Global Sarl Compteur à gaz et piège à particules
CN118565581A (zh) * 2023-02-28 2024-08-30 萨基姆通讯能源及电信联合股份公司 用于气体量表的灰尘过滤器
CN118565580A (zh) * 2023-02-28 2024-08-30 萨基姆通讯能源及电信联合股份公司 用于气体量表的灰尘过滤器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11281438A (ja) * 1998-03-31 1999-10-15 Yazaki Corp 流量計の脈動吸収構造
EP0987526A2 (fr) * 1998-09-19 2000-03-22 Siemens Metering Limited Compteur de gaz adaptable
JP2011112378A (ja) * 2009-11-24 2011-06-09 Panasonic Corp 流路部材および超音波式流体計測装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11281438A (ja) * 1998-03-31 1999-10-15 Yazaki Corp 流量計の脈動吸収構造
EP0987526A2 (fr) * 1998-09-19 2000-03-22 Siemens Metering Limited Compteur de gaz adaptable
JP2011112378A (ja) * 2009-11-24 2011-06-09 Panasonic Corp 流路部材および超音波式流体計測装置

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160109274A1 (en) * 2013-06-12 2016-04-21 Itron Gmbh Gas meter and particle trap
WO2014198691A1 (fr) * 2013-06-12 2014-12-18 Itron Gmbh Compteur de gaz et piège à particules
US9671269B2 (en) 2013-06-12 2017-06-06 Itron Gmbh Gas meter and particle trap
EP2813824A1 (fr) * 2013-06-12 2014-12-17 Itron GmbH Compteur de gaz et piège à particules
EP2908105A1 (fr) * 2014-02-07 2015-08-19 Honeywell International Inc. Capteur de flux d'air à réduction de poussière
US9612146B2 (en) 2014-02-07 2017-04-04 Honeywell International, Inc. Airflow sensor with dust reduction
CN104833400A (zh) * 2014-02-07 2015-08-12 霍尼韦尔国际公司 灰尘减少的空气流传感器
CN107167204A (zh) * 2017-07-05 2017-09-15 上海埃科燃气测控设备有限公司 一体化ic卡气体腰轮流量计量箱
CN107167204B (zh) * 2017-07-05 2024-02-27 上海埃科燃气测控设备有限公司 一体化ic卡气体腰轮流量计量箱
WO2020097515A1 (fr) * 2018-11-10 2020-05-14 Itron Global Sarl Compteur à gaz et piège à particules
US11181412B2 (en) 2018-11-10 2021-11-23 Itron Global Sarl Gas meter contamination filtering device
CN118565581A (zh) * 2023-02-28 2024-08-30 萨基姆通讯能源及电信联合股份公司 用于气体量表的灰尘过滤器
CN118565580A (zh) * 2023-02-28 2024-08-30 萨基姆通讯能源及电信联合股份公司 用于气体量表的灰尘过滤器

Also Published As

Publication number Publication date
JP2014157017A (ja) 2014-08-28

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