JP2014157017A - Gas meter - Google Patents

Gas meter Download PDF

Info

Publication number
JP2014157017A
JP2014157017A JP2011129900A JP2011129900A JP2014157017A JP 2014157017 A JP2014157017 A JP 2014157017A JP 2011129900 A JP2011129900 A JP 2011129900A JP 2011129900 A JP2011129900 A JP 2011129900A JP 2014157017 A JP2014157017 A JP 2014157017A
Authority
JP
Japan
Prior art keywords
flow rate
dust
inlet
filter
rate measuring
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.)
Withdrawn
Application number
JP2011129900A
Other languages
Japanese (ja)
Inventor
Masato Sato
真人 佐藤
Yasushi Fujii
裕史 藤井
Yukinori Ozaki
行則 尾崎
Akihisa Adachi
明久 足立
Yuji Nakabayashi
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
Priority to JP2011129900A priority Critical patent/JP2014157017A/en
Priority to PCT/JP2012/003744 priority patent/WO2012169202A1/en
Publication of JP2014157017A publication Critical patent/JP2014157017A/en
Withdrawn legal-status Critical Current

Links

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

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To provide a gas meter capable of preventing dust from entering into a flow rate measuring part without causing increase of pressure loss due to dust accumulated therein for a long period of time.SOLUTION: In a casing 2 of a gas meter 1, an inlet 11 of a flow rate measuring part 10 is opened within the casing 2, and an outlet 12 of the flow rate measuring part 10 is connected to a flow-out part 4. A filter 14 which has an area larger than the inlet 11 is disposed at a position to partition the flow-in portion 3 from the inlet 11. With this, the flow rate is reduced in a wide space of the casing 2 of the gas meter 1 to thereby allow dust to fall down. Further, the filter 14 which has an area wider than the inlet 11 catches the dust at a lower flow rate before the dust enters the flow rate measuring part 10; thereby the dust catch efficiency is increased while preventing the pressure loss from increasing due to the dust accumulated for a long period of time. With the combination of the above effects, dust is prevented from entering the flow rate measuring part 10.

Description

本発明は、流量計測部への塵挨流入を防止するガスメータに関するものである。   The present invention relates to a gas meter for preventing dust from flowing into a flow rate measuring unit.

従来、この種のガスメータは、流量計測部の上流側に異物除去用のフィルタを設けている（例えば、特許文献１参照）。   Conventionally, 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).

図２は、特許文献１に記載された従来のガスメータを示すものである。 図２に示すように、ガスメータ１０１は、流入口１０２と、流出口１０３と、を有しており、ガスメータ１０１の内部では、フィルタ１０４と、遮断弁１０５と、下向き流路１０６と、流量計測部が配設された水平流路１０７と、上向き流路１０８とが連続して接続されており、これらが流入口１０２と流出口１０３との間に配置された構成となっている。   FIG. 2 shows a conventional gas meter described in Patent Document 1. As shown in FIG. As shown in FIG. 2, 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.

特開２００４−１０１３０３号公報JP 2004-101303 A

しかしながら、前記従来の構成では、流入口１０２より流入した異物は、流入口１０２直後のフィルタ１０４に堆積するため、長期間の後には圧力損失となり、ガスメータ１０１に所定の流量を流すことができなくなるという課題を有していた。   However, in the conventional configuration, the foreign matter that flows in from the inlet 102 accumulates on the filter 104 immediately after the inlet 102, and thus becomes a pressure loss after a long period of time, so that a predetermined flow rate cannot flow through the gas meter 101. It had the problem that.

本発明は、前記従来の課題を解決するもので、長期間経過しても大きな圧力損失の増加を生じることなく流量計測部への塵挨の流入を防止するようにしたガスメータを提供するものである。   The present invention solves the above-described conventional problems, and provides a gas meter that prevents the inflow of dust into a flow rate measuring unit without causing a large increase in pressure loss even after a long period of time. is there.

前記従来の課題を解決するために、本発明のガスメータは、筺体と、前記筺体に設けられた流入部、および流出部と、前記筺体内に配置され、入口部と出口部とを有する流量計測部と、前記筺体内部に配置したフィルタとよりなり、前記流量計測部は入口部を前記筺体内に開口するとともに、前記流量計測部の出口部を前記流出部に接続し、前記フィルタは前記流入部と前記入口部とを区画するとともに、前記入口部より大きい面積を有したものである。   In order to solve the conventional problems, a gas meter of the present invention includes a housing, an inflow portion and an outflow portion provided in the housing, and a flow rate measurement that is disposed in the housing and has an inlet portion and an outlet portion. And a filter disposed inside the housing, wherein the flow rate measuring unit opens an inlet portion into the housing and connects an outlet portion of the flow rate measuring unit to the outflow portion, and the filter And an area larger than the inlet portion.

これによって、流入部より流入したガスの流れを、いったんガスメータの筺体内の広い空間に開放して流速を遅くして塵挨の落下を容易にすることができ、さらに流量計測部に入る前に広い面積のフィルタにより低流速で塵挨を捕集するため、塵挨の捕集効率を高めるとともに、長期間にわたる塵挨の蓄積による大きな圧力損失の増加を来すことがなく、これらの総合効果により流量計測部への塵挨流入を防止するようにしたものである。   As a result, the flow of gas flowing in from the inflow section can be released once in a wide space in the gas meter housing to slow down the flow velocity and facilitate the falling of dust, and before entering the flow measurement section The large area of the filter collects dust at a low flow rate, improving the dust collection efficiency and increasing the pressure loss due to the accumulation of dust over a long period of time. This prevents dust from flowing into the flow rate measuring unit.

本発明のガスメータは、流速の低下と広い面積のフィルタにより流量計測部への塵挨流入を防止することができる。また、長期間にわたるフィルタへの塵挨蓄積によっても圧力損失の増加を来すことがない。   The gas meter of the present invention can prevent the inflow of dust into the flow rate measurement unit by the decrease in flow rate and the wide area filter. Further, pressure loss does not increase even if dust accumulates in the filter over a long period of time.

本発明の実施の形態１におけるガスメータの垂直断面図Vertical sectional view of a gas meter in Embodiment 1 of the present invention 従来のガスメータの垂直断面図Vertical section of a conventional gas meter

第１の発明は、筺体と、前記筺体に設けられた流入部、および流出部と、前記筺体内に配置され、入口部と出口部とを有する流量計測部と、前記筺体内部に配置したフィルタとよりなり、前記流量計測部は入口部を前記筺体内に開口するとともに、前記流量計測部の出口部を前記流出部に接続し、前記フィルタは前記流入部と前記入口部とを区画するとともに、前記入口部より大きい面積を有することにより、流入部より流入したガスの流れを、いったんガスメータの筺体内の広い空間に開放して流速を遅くして塵挨の落下を容易にすることができ、さらに流量計測部に入る前に広い面積のフィルタにより低流速で塵挨を捕集するため、塵挨の捕集効率を高めるとともに、長期間にわたる塵挨の蓄積による、大きな圧力損失の増加を来すことがなく、これらの総合効果により、流量計測部への塵挨流入を防止するようにしたものである。   1st invention is the housing, the inflow part provided in the said housing, the outflow part, the flow volume measurement part which is arrange | positioned in the said housing and has an inlet part and an exit part, and the filter arrange | positioned inside the said housing The flow rate measuring unit opens an inlet portion into the housing, connects an outlet portion of the flow rate measuring unit to the outflow portion, and the filter partitions the inflow portion and the inlet portion. By having an area larger than the inlet, the flow of the gas flowing in from the inlet can be once released to a wide space in the gas meter housing to slow down the flow velocity and facilitate the falling of dust. In addition, since dust is collected at a low flow rate by a large area filter before entering the flow measurement unit, the dust collection efficiency is increased and a large increase in pressure loss due to accumulation of dust over a long period of time. To come Without these total effect is obtained by so as to prevent Chiri挨 flowing into the flow rate measurement unit.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
実施の形態１ついて、図１を参照しながら説明する。図１は、本発明の第１の実施の形態におけるガスメータの垂直断面図を示すものである。 (Embodiment 1)
The first embodiment will be described with reference to FIG. FIG. 1 is a vertical sectional view of a gas meter according to a first embodiment of the present invention.

図１において１はガスメータである。ガスメータ１の筺体２は、流入部３と流出部４を有している。流入部３には流入パイプ５、流出部４には流出パイプ６が接続されている。筺体２の内部において、流入部３には遮断弁７が接続されている。この遮断弁７の入口端８は流入部３に接続され、出口端９は筺体２の内部に開放されている。   In FIG. 1, 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 shut-off 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.

また、筺体２の内部には、流量計測部１０が、配置されている。流量計測部１０は入口部１１と出口部１２を有しており、入口部１１は筺体２の内部に開放されており、出口部１２は接続部１３により流出部４に接続されている。   In addition, a flow rate measuring unit 10 is disposed inside the housing 2. The flow rate measuring unit 10 has an inlet part 11 and an outlet part 12, the inlet part 11 is opened inside the housing 2, and the outlet part 12 is connected to the outflow part 4 by a connection part 13.

流量計測部１０としては、例えば超音波で流量を計測する方式のものや、フローセンサで流量を計測するものがある。また、超音波で計測するもので、その流路内部を板で複数に分割するものも含まれる。   Examples of the flow rate measuring unit 10 include a type that measures the flow rate with ultrasonic waves and a type that measures the flow rate with a flow sensor. Moreover, what measures by an ultrasonic wave and divides the inside of the flow path into a plurality with a board is also included.

筺体２の内部にはフィルタ１４が配置されている。フィルタ１４は、流入部３と流量計測部１０の入口部１１とを区画する位置に配置されている。   A filter 14 is disposed inside the housing 2. The filter 14 is disposed at a position that divides the inflow portion 3 and the inlet portion 11 of the flow rate measurement unit 10.

また、フィルタ１４の面積は、流量計測部１０の入口部１１の面積よりも大きくなるような設定になされている。   The area of the filter 14 is set to be larger than the area of the inlet 11 of the flow rate measuring unit 10.

本実施例の場合、フィルタ１４は筺体２の左側面１５から右側面１６にわたり、筺体２の奥行き方向一杯の幅で水平に取り付けられており、筺体２の内部がフィルタ１４により区画されるように配置されている。   In the case of the present embodiment, the filter 14 is horizontally mounted from the left side surface 15 to the right side surface 16 of the housing 2 with a full width in the depth direction of the housing 2 so that the inside of the housing 2 is partitioned by the filter 14. Has been placed.

すなわち、フィルタ１４は、流入部３から流量計測部１０の入口部１１への流れが必ず通過する位置に配置されている。この場合のフィルタ１４の面積は流量計測部１０の入口部１１の面積よりも十分大きいものである。   That is, 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. In this case, the area of the filter 14 is sufficiently larger than the area of the inlet 11 of the flow rate measuring unit 10.

以上のように構成されたガスメータ１について、以下、その動作、作用を説明する。
まず、流入パイプ５より流入したガスは、流入部３から遮断弁７の入口端８より入り、その後、出口端９より筺体２の内部空間に放出される。この内部空間は面積が流入部３より十分広いため、ガスの流速は遅くなり、ガスに含まれている塵挨はここでその一部が落下する。 About the gas meter 1 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.
First, 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 area of the internal space is sufficiently larger than the inflow portion 3, the flow rate of the gas becomes slow, and a part of the dust contained in the gas falls here.

筺体２の内部には、内部を区画するようにフィルタ１４が配置されているため、遮断弁７の出口端９より放出された流れＰ１は、Ｐ２、Ｐ３のような流れとなってフィルタ１４を通過する。このフィルタ１４の面積は流量計測部１０の入口部１１の面積より十分大きいため、フィルタ１４における通過流速が小さく、塵埃の捕集効率を高めることができるものである。   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.

また、フィルタ１４の面積が大きいことにより圧力損失もきわめて少ないものである。とりわけ、長期間にわたって、フィルタ１４に塵埃が蓄積したとしても、流れは塵埃が蓄積している部分を回避して、より損失の少ない部分を流れるため、従来例で示したような遮断弁の入口に設けられた面積の小さいフィルタと比較して、圧力損失は格段に低いことが容易に類推されるものである。   Further, since the area of the filter 14 is large, the pressure loss is extremely small. In particular, even if dust accumulates in the filter 14 over a long period of time, the flow avoids the portion where dust is accumulated and flows through a portion with less loss. It can be easily inferred that the pressure loss is remarkably low as compared with a filter having a small area.

以上のように、本実施の形態においては、流入部より流入したガスの流れを、いったんガスメータの筺体２内の広い空間に開放して流速を遅くして塵挨の落下を容易にすることができ、さらに流量計測部１０に入る前に広い面積のフィルタ１４により低流速で塵挨を捕集するため、塵挨の捕集効率を高めるとともに、長期間にわたる塵挨の蓄積による圧力損失の大きな増加を来すことがなく、これらの総合効果により流量計測部１０への塵挨流入を防止することができる。   As described above, in the present embodiment, 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. In addition, since dust is collected at a low flow rate by the filter 14 having a large area before entering the flow rate measuring unit 10, 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, it is possible to prevent the inflow of dust into the flow rate measuring unit 10 by these comprehensive effects.

なお、本実施の形態でフィルタ１４を筐体２の内部全体にわたり区画する構成としたが、これに限定されるものではなく、例えば、流量計測部１０の入口部１１に袋状のフィルタを配置する構成等も可能である。   In the present embodiment, the filter 14 is configured to be partitioned over the entire interior of the housing 2. However, the present invention is not limited to this. For example, 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.

また、本実施例で遮断弁を構成要素に加えたが、遮断弁がなくても同様の効果が発揮されるものである。   Moreover, although the shut-off valve is added to the constituent elements in the present embodiment, the same effect is exhibited even without the shut-off valve.

以上のように、本発明にかかるガスメータは、長期間にわたり、塵挨の蓄積による圧力損失の増加を来すことなく流量計測部への塵挨流入を防止することが可能となるので、家庭用から業務用に至る大型のガスメータまで幅広い用途に適用できる。   As described above, the gas meter according to the present invention can prevent the inflow of dust into the flow rate measuring unit without increasing the pressure loss due to the 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.

１ ガスメータ
２ 筺体
３ 流入部
４ 流出部
１０ 流量計測部
１１ 入口部
１２ 出口部
１３ 接続部
１４ フィルタ DESCRIPTION OF SYMBOLS 1 Gas meter 2 Housing 3 Inflow part 4 Outflow part 10 Flow measurement part 11 Inlet part 12 Outlet part 13 Connection part 14 Filter

Claims (1)

筺体と、前記筺体に設けられた流入部、および流出部と、前記筺体内に配置され、入口部と出口部とを有する流量計測部と、前記筺体内部に配置したフィルタとよりなり、前記流量計測部は入口部を前記筺体内に開口するとともに、前記流量計測部の出口部を前記流出部に接続し、前記フィルタは前記流入部と前記入口部とを区画するとともに、前記入口部より大きい面積を有したガスメータ。 The flow rate includes a housing, an inflow portion and an outflow portion provided in the housing, a flow rate measuring unit disposed in the housing and having an inlet portion and an outlet portion, and a filter disposed in the housing. The measuring unit opens an inlet portion into the housing, connects an outlet portion of the flow rate measuring unit to the outflow portion, and the filter partitions the inflow portion and the inlet portion and is larger than the inlet portion. Gas meter with area.
JP2011129900A 2011-06-10 2011-06-10 Gas meter Withdrawn JP2014157017A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2011129900A JP2014157017A (en) 2011-06-10 2011-06-10 Gas meter
PCT/JP2012/003744 WO2012169202A1 (en) 2011-06-10 2012-06-07 Gas meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011129900A JP2014157017A (en) 2011-06-10 2011-06-10 Gas meter

Publications (1)

Publication Number Publication Date
JP2014157017A true JP2014157017A (en) 2014-08-28

Family

ID=47295785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011129900A Withdrawn JP2014157017A (en) 2011-06-10 2011-06-10 Gas meter

Country Status (2)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2813824B1 (en) * 2013-06-12 2019-04-17 Itron GmbH Gas meter and particle trap
US9612146B2 (en) * 2014-02-07 2017-04-04 Honeywell International, Inc. Airflow sensor with dust reduction
CN107167204B (en) * 2017-07-05 2024-02-27 上海埃科燃气测控设备有限公司 Integrated IC card gas roots flowmeter box
WO2020097515A1 (en) * 2018-11-10 2020-05-14 Itron Global Sarl Gas meter and particle trap

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11281438A (en) * 1998-03-31 1999-10-15 Yazaki Corp Pulsation absorbing structure for flow meter
GB2341688A (en) * 1998-09-19 2000-03-22 Siemens Measurements Ltd Adaptable gas meter
JP2011112378A (en) * 2009-11-24 2011-06-09 Panasonic Corp Flow channel member and ultrasonic fluid measurement device

Also Published As

Publication number Publication date
WO2012169202A1 (en) 2012-12-13

Similar Documents

Publication Publication Date Title
WO2010146393A3 (en) A water filter
JP2014157017A (en) Gas meter
WO2006102340A3 (en) Storm water filtration system
EP2813824B1 (en) Gas meter and particle trap
RU2015151912A (en) FILTRATION SYSTEM AND METHOD FOR CLEANING THE GAS TURBINE INTAKE AIR
JP2014157016A (en) Gas meter
JP4844981B2 (en) Droplet separator system
JP3194719U (en) Steam condensate discharge device
JP5350280B2 (en) Gas-liquid separator
CN201930625U (en) Y-shaped filter with replaceable meshed filter vat
JP2015121128A (en) Air cleaner
CN205867756U (en) Hydropower pipeline water purifier
JP5868714B2 (en) Gas-liquid separator
JP5476000B2 (en) Gas-liquid separator
JP5384441B2 (en) Gas-liquid separator
JP6033163B2 (en) Flowmeter
JP5461515B2 (en) Exhaust gas analyzer and drain separator
JP2011224431A (en) Gas-liquid separator
JP5350289B2 (en) Gas-liquid separator
CN204302054U (en) A kind of current stabilization case
CN217236890U (en) Ultrasonic gas meter with pollution-resistant structure
KR200363156Y1 (en) Strainer for vertical pipe
CN216539010U (en) Energy dissipation water tank
CN203979632U (en) A kind of multiphase flow buffering pipe valve
CN203355547U (en) Coal gas water cooling filter device

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20140902