JPS5841453Y2 - Flowmeter - Google Patents

Description

【考案の詳細な説明】 この考案は水道メータ等の流量計に関する。[Detailed explanation of the idea] This invention relates to a flow meter such as a water meter.

従来、水道メータにおいて、配管路の途中に測定管路１
を設け、この測定管路１に、指示積算部２と翼車３を装
備した指示装置４を、点検、修理できるように取脱可能
に装着したものが提案されている。Conventionally, in water meters, there is a measuring pipe 1 in the middle of the pipe.
It has been proposed that an indicating device 4 equipped with an indicating integrating section 2 and a blade wheel 3 is removably attached to the measuring pipe 1 for inspection and repair.

しかし、この従来のものにあっては、指示装置４の測定
管路１に対する着脱が容易ではなく、そのため、翼車３
を収容する管体と、これを包囲する測定管路１との気密
性を保持する状態に完全に復元、装着することが困難で
あった。However, in this conventional device, it is not easy to attach and detach the indicating device 4 to and from the measuring pipe 1, and therefore the impeller 3
It was difficult to completely restore and install the pipe body housing the pipe body and the measurement pipe line 1 surrounding it to maintain airtightness.

そのため、測定管路１の内面１Ｃに付着した鉄錆が、着
脱操作時とか、水撃作用等の管路への振動、衝撃等によ
り測定管路内に入り、翼車の回転に支障を招く欠点があ
った。Therefore, iron rust adhering to the inner surface 1C of the measuring pipe 1 enters the measuring pipe during attachment/detachment operations or due to vibrations and shocks to the pipe due to water hammer, causing trouble in the rotation of the impeller. There were drawbacks.

この考案は上記の欠点を解消することを目的とするもの
で、すなわち、指示積算部２と翼車３を装備した指示装
置４を測定管路１に対し、翼車３部が流路部に位置する
ように取脱可能に設置するものにおいて、測定管路１内
に不銹材料より戊る内周管５を設置すると共に該内周管
５の上部に、上記翼車３部を挿入し得る開口部６を形成
し、しかも指示積算部２の下面には、上記開口部６の開
口寸法より幾分小さい形状の被覆板と、開口部６の開口
寸法より幾分大きい形状のパツキン板７を固着し、指示
装置４を設置した場合、上記パツキン板７の周縁が内周
管５の外面に当接するようにしたことを特徴とするもの
である。The purpose of this invention is to eliminate the above-mentioned drawbacks. That is, the indicating device 4, which is equipped with the indicating integrating section 2 and the impeller 3, is connected to the measuring pipe 1, and the impeller 3 is attached to the flow path section. In the case where the inner circumferential tube 5 made of a non-corrosive material is installed in the measurement pipe line 1 and the above-mentioned impeller 3 is inserted into the upper part of the inner circumferential tube 5. Furthermore, on the lower surface of the indicating/integrating section 2, there are provided a cover plate having a shape somewhat smaller than the opening size of the opening 6, and a packing plate 7 having a shape somewhat larger than the opening size of the opening 6. is fixed and the indicating device 4 is installed, the peripheral edge of the packing plate 7 comes into contact with the outer surface of the inner circumferential tube 5.

次に図面に示すこの考案を水道メータに用いた実施例に
ついて説明する。Next, an example in which this invention shown in the drawings is applied to a water meter will be described.

１は測定管路で鋳鉄製であり、その両端のフランジｌａ
、ｌｂにより配管路に接続するようになっている。1 is a measurement pipe made of cast iron, with flanges la at both ends.
, lb to connect to the piping line.

２は指示積算部、３は翼車でこれらは一体に連結して指
示装置４を構成しており、その構造はほぼ公知のもので
ある。Reference numeral 2 denotes an indication integration unit, and 3 denotes a blade wheel, which are integrally connected to constitute an indication device 4, the structure of which is generally known.

５は不銹材料より成る内周管で、測定管路１の内周に嵌
合設置されており、その中央上半部には、上記翼車３を
上方より挿入、外脱できるような大きさを有する開口部
６が形成されている。Reference numeral 5 denotes an inner circumferential tube made of a non-rusting material, which is fitted to the inner circumference of the measurement conduit 1, and has a tube in its central upper half large enough to allow the impeller 3 to be inserted and removed from above. An opening 6 having a large diameter is formed.

７は上記開口部５を外部より被覆するパツキン板で、そ
の外周縁が内周管５の外面に当接するように開口部５の
寸法より幾分大きく形成されている。Reference numeral 7 denotes a packing plate that covers the opening 5 from the outside, and is formed to be somewhat larger than the opening 5 so that its outer peripheral edge comes into contact with the outer surface of the inner circumferential tube 5.

８，９はパツキン板の挟持板で、上記開口部５の寸法よ
り幾分小さく形成されていると共にその内板８は、内周
管５と同一円弧に形成されている。Reference numerals 8 and 9 denote holding plates of packing plates, which are formed to be somewhat smaller in size than the opening 5, and the inner plate 8 thereof is formed in the same arc as the inner circumferential tube 5.

そして、この挾持板８部９間にパツキン板７を介在して
リベツ） １０で固着し、その両挟持板８，９を指示積
算部２の下側ケースの下面にねじ１１により固着する。A packing plate 7 is interposed between the clamping plates 8 and 9 and fixed with rivets 10, and both clamping plates 8 and 9 are fixed to the lower surface of the lower case of the indicating/accumulating section 2 with screws 11.

なお、これらの取付けは、翼車３を内周管５内に挿入設
置した場合、パツキン板７の外周縁が内周管５の外面に
幾分押圧されて密着するように設定するもので、これに
より、パツキン板７は逆止弁作用を行なうものである。These attachments are set so that when the impeller 3 is inserted into the inner circumferential tube 5, the outer circumferential edge of the packing plate 7 is pressed somewhat against the outer surface of the inner circumferential tube 5 and comes into close contact with it. Thereby, the packing plate 7 functions as a check valve.

以上のようであるから、測定管路１の内周面１Ｃに鉄錆
が発生した場合、振動等によりその鉄錆が落下しても、
その鉄錆は内周管５の存在により水路中に入らない。As described above, when iron rust occurs on the inner circumferential surface 1C of the measurement pipe 1, even if the iron rust falls due to vibration etc.
The iron rust does not enter the waterway due to the presence of the inner circumferential pipe 5.

また、内周管５は不銹材料としたので、その錆の発生が
ない。Furthermore, since the inner circumferential tube 5 is made of a non-rust material, there is no occurrence of rust.

また、翼車３の設置のための開口部６は、パツキン板７
により閉鎖されるので、上記の鉄錆や翼物が翼車３部に
流入することがなく翼車の回転に支障を招くことがない
。Further, the opening 6 for installing the impeller 3 is formed by a packing plate 7.
Since the blade is closed, the above-mentioned iron rust and blade objects will not flow into the blade wheel 3 portion and will not cause any trouble to the rotation of the blade wheel.

また、水撃作用により翼軍部の水圧が上昇した場合には
、パツキン板７が外方へそり曲り、その水撃作用を緩和
し、指示装置４の保護を図ることができる。Furthermore, when the water pressure in the wing section increases due to water hammer action, the packing plate 7 bends outward to alleviate the water hammer action and protect the indicating device 4.

更に、パツキン板７は、内周管５の外面に当接するよう
にしたので、指示装置４の上方よりの着脱か容易に行な
え、保守、点検に便利となるなど、実用上有効なもので
ある。Furthermore, since the packing plate 7 is arranged to abut against the outer surface of the inner circumferential tube 5, the indicating device 4 can be easily attached and detached from above, which is convenient for maintenance and inspection, and is thus practically effective. .

【図面の簡単な説明】[Brief explanation of the drawing]

図面はこの考案の実施例を示すもので、第１図は一部切
開した斜視図、第２図は測定管路の平面図、第３図は側
断面図、第４図は半面を正断面図とした図である。 １・・・・・・測定管路、２・・・・・・指示積算部、
３・・・・・・翼車、４・・・・・・指示装置、５・・
・・・・内周管、６・・・・・・開口部、７・・・・・
・パツキン板、８，９・・・・・・被覆板である挟持板
。The drawings show an embodiment of this invention: Fig. 1 is a partially cutaway perspective view, Fig. 2 is a plan view of the measurement pipe, Fig. 3 is a side sectional view, and Fig. 4 is a half front sectional view. FIG. 1...Measurement pipe line, 2...Instruction integration section,
3...Blade wheel, 4...Instruction device, 5...
...Inner tube, 6...Opening, 7...
- Packing plate, 8, 9... Clamping plate that is a covering plate.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 指示積算部２と翼車３を装備した指示装置４を測定管路
１に対し、翼車３部が流路部に位置するように取脱可能
に設置するものにおいて、測定管路１内に不銹材料より
戒る内周管５を設置すると共に該内周管５の上部に、上
記翼車３部を挿入し得る開口部６を形成し、しかも指示
積算部２の下面には、上記開口部６の開口寸法より幾分
小さい形状の被覆板と、開口部６の開口寸法より幾分大
きい形状のパツキン板７を固着し、指示装置４を設置し
た場合、上記パツキン板７の周縁が内周管５の外面に当
接するようにしたことを特徴とする流量計。An indicator device 4 equipped with an indicator integrating unit 2 and a blade wheel 3 is removably installed in the measuring pipe 1 so that the blade wheel 3 is located in the flow path. An inner circumferential tube 5 made of non-corrosive material is installed, and an opening 6 into which the impeller 3 described above can be inserted is formed in the upper part of the inner circumferential tube 5. When a covering plate with a shape slightly smaller than the opening size of the opening 6 and a packing plate 7 with a shape slightly larger than the opening size of the opening 6 are fixed and the indicating device 4 is installed, the periphery of the packing plate 7 is A flowmeter characterized in that the flowmeter comes into contact with the outer surface of the inner circumferential tube 5.