JPS583083Y2 - Differential pressure display device - Google Patents

Differential pressure display device

Info

Publication number
JPS583083Y2
JPS583083Y2 JP867878U JP867878U JPS583083Y2 JP S583083 Y2 JPS583083 Y2 JP S583083Y2 JP 867878 U JP867878 U JP 867878U JP 867878 U JP867878 U JP 867878U JP S583083 Y2 JPS583083 Y2 JP S583083Y2
Authority
JP
Japan
Prior art keywords
magnet
pressure receiving
receiving chamber
movable
diaphragm
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.)
Expired
Application number
JP867878U
Other languages
Japanese (ja)
Other versions
JPS54112175U (en
Inventor
博夫 西野
Original Assignee
伊藤工機株式会社
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 伊藤工機株式会社 filed Critical 伊藤工機株式会社
Priority to JP867878U priority Critical patent/JPS583083Y2/en
Publication of JPS54112175U publication Critical patent/JPS54112175U/ja
Application granted granted Critical
Publication of JPS583083Y2 publication Critical patent/JPS583083Y2/en
Expired legal-status Critical Current

Links

Landscapes

  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Fluid Pressure (AREA)

Description

【考案の詳細な説明】 本考案は二つの圧力を受圧箱内に取出し、この圧力差に
よって表示部を作動させるようにした差圧表示装置に関
し、流体通路中に設けられたフィルターの目詰り限度や
、ガスメータ、調整器等の定格流量のあるものに対して
は、該定格流量を起えたか、否かを検出し得る便利な差
圧表示装置を提供しようとするものである。
[Detailed description of the invention] The present invention relates to a differential pressure display device that extracts two pressures into a pressure receiving box and operates a display section based on the pressure difference. For devices with a rated flow rate, such as gas meters, regulators, etc., the present invention aims to provide a convenient differential pressure display device that can detect whether or not the rated flow rate has been reached.

次に本考案の一実施例を示す図面に基づいてその詳細を
説明すると下記の通りである。
Next, the details of an embodiment of the present invention will be explained based on the drawings as follows.

図において、1は非磁性体から成る受圧箱であって、内
部にはダイヤフラム2が張設され、このダイヤフラム2
の張設によって該受圧箱1の内部に一次受圧室3と二次
受圧室4とが形成されている。
In the figure, 1 is a pressure receiving box made of a non-magnetic material, and a diaphragm 2 is stretched inside.
A primary pressure receiving chamber 3 and a secondary pressure receiving chamber 4 are formed inside the pressure receiving box 1 by the tensioning.

また、受圧箱1の外部には二次受圧室4に隣接して表示
空間5が設けられ、この表示空間5の周壁一部に貫窓6
が形成されている。
Further, a display space 5 is provided outside the pressure receiving box 1 adjacent to the secondary pressure receiving chamber 4, and a through window 6 is provided in a part of the peripheral wall of this display space 5.
is formed.

−灰受圧室3と二次受圧室4の各々には通孔7.8を備
え、該−灰受圧室3にはダイヤフラム2の一面側に固定
された受圧板9と、この受圧板9に圧接してダイヤフラ
ム2を二次受圧室4側に押圧するバネ10とを設ける。
- Each of the ash pressure receiving chamber 3 and the secondary pressure receiving chamber 4 is provided with a through hole 7.8; A spring 10 that presses the diaphragm 2 toward the secondary pressure receiving chamber 4 is provided.

バネ10の他端は受圧箱1のネジ筒11に螺着する調整
蓋12で受けられ、該調整蓋12を回動させる操作によ
ってバネ10の弾性強さを調整し得るようになっている
The other end of the spring 10 is received by an adjustment lid 12 screwed onto a threaded cylinder 11 of the pressure receiving box 1, and the elastic strength of the spring 10 can be adjusted by rotating the adjustment lid 12.

二次受圧室4には可動マグネット13を設け、この可動
マグネット13の一面側にダイヤフラム2並びに受圧板
9の各々を挿通するネジ棒14を設け、該ネジ棒14に
螺着するナツト15によってダイヤフラム2に可動マグ
ネット13を固定する。
A movable magnet 13 is provided in the secondary pressure receiving chamber 4, and a threaded rod 14 is provided on one side of the movable magnet 13 through which the diaphragm 2 and the pressure receiving plate 9 are inserted. A movable magnet 13 is fixed to 2.

表示空間5には可動マグネット13に対設する円板状の
作動マグネット16と、この作動マグネット16の外周
囲に固定マグネット17とを設ける。
In the display space 5, a disk-shaped actuating magnet 16 is provided opposite to the movable magnet 13, and a fixed magnet 17 is provided around the outer periphery of the actuating magnet 16.

作動マグネット16には両面側に突出する軸18を有し
、該軸18の両端部を表示空間5の上下壁で回動自在に
支承すると共に、作動マグネット16の外周面には表示
19を形成する。
The actuating magnet 16 has a shaft 18 protruding from both sides, and both ends of the shaft 18 are rotatably supported by the upper and lower walls of the display space 5, and a display 19 is formed on the outer peripheral surface of the actuating magnet 16. do.

作動マグネット16に対する可動マグネット13及び固
定マグネット17の励磁力は、該作動マグネット16と
下降状態にある可動マグネット13間の励磁力をFlと
し、作動マグネット16と上昇状態にある可動マグネッ
ト13間の励磁力をF2とし、更に作動マグネット16
と固定マグネット17間の励磁力をF3とした場合に、
F□〉F3〉F2の関係がある。
The excitation force of the movable magnet 13 and the fixed magnet 17 with respect to the operating magnet 16 is the excitation force between the operating magnet 16 and the movable magnet 13 in the lowered state as Fl, and the excitation force between the operating magnet 16 and the movable magnet 13 in the ascending state. The force is F2, and the operating magnet 16
When the excitation force between the fixed magnet 17 and the fixed magnet 17 is F3,
There is a relationship of F□〉F3〉F2.

また、可動マグネット13と固定マグネット17におけ
る同極部は第2図及び第3図に示す如<45°程度の位
相があり、可動マグネット13の上下動によって作動マ
グネット16が回動するようになっている。
Furthermore, the same polar parts of the movable magnet 13 and the fixed magnet 17 have a phase of about <45° as shown in FIGS. ing.

実施例で示す差圧表示装置は上記の構造から成り、第1
図はその使用の一例を示したものである。
The differential pressure display device shown in the example has the above structure, and the first
The figure shows an example of its use.

この第1図に示す例は、流体通路Aの途中に設けたフィ
ルターBの目詰り限度を検出するようにしたものであっ
て、フィルターBの入口側の圧力を通孔8に接続するパ
イプCで二次受圧室4に、かつ出口側の圧力を通孔7に
接続するパイプDで一次受圧室3に各々取り出し、フィ
ルターBの出入口部における差圧によって可動マグネッ
ト13を上下動せしめ、該マグネット13の可動によっ
て作動マグネット16を回動させるようにしたものであ
□る。
In the example shown in FIG. 1, the clogging limit of a filter B provided in the middle of a fluid passage A is detected, and the pressure on the inlet side of the filter B is detected by a pipe C connected to a through hole 8. to the secondary pressure receiving chamber 4 and to the primary pressure receiving chamber 3 through a pipe D connected to the pressure passage hole 7 on the outlet side, and the movable magnet 13 is moved up and down by the differential pressure at the entrance and exit part of the filter B. The operating magnet 16 is rotated by the movement of the magnet 13.

いま、フィルターBの透過率が大きい場合、出入口部に
おける圧力、即ち一次受圧室3と二次受圧室4の圧力は
略等しいため、ダイヤフラム2はバネ10で下向きに押
され、可動マグネット13は第1図に示す如く二次受圧
室4の底面に圧接する下降伏態になり、この下降伏態の
可動マグネット13と作動マグネット16の励磁力は作
動マグネット16と固定マグネット17の励磁力より大
きいため、作動マグネット16は可動マグネット13の
影響を受けて第2図に示す如くなる。
Now, when the transmittance of filter B is large, the pressure at the entrance and exit portions, that is, the pressures in the primary pressure receiving chamber 3 and the secondary pressure receiving chamber 4 are approximately equal, so the diaphragm 2 is pushed downward by the spring 10, and the movable magnet 13 is pushed downward by the spring 10. As shown in Fig. 1, the magnet is in a downward yielding state in which it is in pressure contact with the bottom surface of the secondary pressure receiving chamber 4, and the excitation force of the movable magnet 13 and the operating magnet 16 in this downward yielding state is greater than the excitation force of the operating magnet 16 and the fixed magnet 17. , the operating magnet 16 is influenced by the movable magnet 13 as shown in FIG.

また、フィルターBの透過率が悪くなった場合、人口側
の圧力が出口側の圧力より大きくなるため、この圧力差
によってダイヤフラム2はバネ10の弾性に抗して一次
受圧室3側にわん曲し、可動マグネット13は上昇する
ことになる。
In addition, if the transmittance of filter B deteriorates, the pressure on the artificial side becomes greater than the pressure on the outlet side, and this pressure difference causes the diaphragm 2 to bend toward the primary pressure receiving chamber 3 against the elasticity of the spring 10. However, the movable magnet 13 will rise.

この可動マグネット13の上昇によって該可動マグネッ
ト13と作動マグネット16の励磁力は小さくなり、該
励磁力に対して作動マグネット16と固定マグネット1
7の励磁力が大きいため、固定マグネット17の影響で
作動マグネット16が回動し、第3図に示す如くなる。
As the movable magnet 13 rises, the excitation force of the movable magnet 13 and the working magnet 16 becomes smaller, and the working magnet 16 and the fixed magnet 1
Since the excitation force of the magnet 7 is large, the operating magnet 16 rotates under the influence of the fixed magnet 17, as shown in FIG.

作動マグネット16が第3図の状態になったとき、該作
動マグネット16の表示19が貫窓6に望むようにして
おくことにより、フィルターBの目詰り限度を検出する
ことができる。
When the actuating magnet 16 is in the state shown in FIG. 3, the clogging limit of the filter B can be detected by making the indicator 19 of the actuating magnet 16 face the through window 6.

本考案に係る差圧表示装置はフィルターBの目詰り限度
の検出以外にも使用することができる。
The differential pressure display device according to the present invention can be used for purposes other than detecting the clogging limit of filter B.

例えば、ガスメータ、調整器等の定格流量にあるものに
対し、流量をベンチュリー、オリフィス等により二つの
圧力信号に変換し、この圧力信号の各々を一次受圧室3
及び二次受圧室4にとり出すことによって作動マグネッ
ト16を回動させることができるため、定格流量を越え
ているか否かを検出することができる。
For example, for a gas meter, regulator, etc. at the rated flow rate, the flow rate is converted into two pressure signals using a venturi, orifice, etc., and each of these pressure signals is sent to the primary pressure receiving chamber.
Since the actuating magnet 16 can be rotated by taking it out into the secondary pressure receiving chamber 4, it is possible to detect whether or not the rated flow rate is exceeded.

尚、作動マグネットの外周囲にリミットスイッチを設け
、このスイッチの作動用突片を該マグネットに固定する
こと゛によって前記マグネットの回動を電気信号に変換
することができるため、警報器等を作動させることがで
きる。
Furthermore, by providing a limit switch around the outer periphery of the operating magnet and fixing the operating protrusion of this switch to the magnet, the rotation of the magnet can be converted into an electrical signal, which can activate alarms, etc. can be done.

以上のように本考案は一次受圧・室3と二次受圧室4と
の圧力差によってわん曲するダイヤフラム2に可動マグ
ネット13を取付け、該マグネット13の移動によって
表示19を備えた作動マグネット16を適当角度回動さ
せるようにしたため、フィルターBの目詰り限度や、ガ
スメータ等の定格流量にあるものに対しては、該定格流
量を越えているか否かを検出することができると共に、
簡単な構造であって確実な動作が得られる等の効果があ
る。
As described above, in the present invention, a movable magnet 13 is attached to the diaphragm 2 which bends due to the pressure difference between the primary pressure receiving chamber 3 and the secondary pressure receiving chamber 4, and the movement of the magnet 13 causes the operating magnet 16 with the display 19 to be moved. Since it is rotated at an appropriate angle, it is possible to detect whether or not the clogging limit of filter B or the rated flow rate of a gas meter, etc. is exceeded.
It has a simple structure and has the advantage of reliable operation.

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

第1図は本考案に係る差圧表示装置の一実施例を示す縦
断側面図、第2図及び第3図は動作状態を示す概略図で
ある。 1・・・・・・受圧箱、2・・・・・・ダイヤフラム、
3・・・・・・−灰受圧室、4・・・・・・二次受圧室
、5・・・・・・表示空間、6・・・・・・貫窓、7,
8・・・・・・通孔、10・・・・・・バネ、13・・
・・・・可動マグネット、16・・・・・・作動マグネ
ット、17・・・・・・固定マグネット。
FIG. 1 is a longitudinal sectional side view showing an embodiment of a differential pressure display device according to the present invention, and FIGS. 2 and 3 are schematic diagrams showing the operating state. 1...Pressure box, 2...Diaphragm,
3...-ash pressure receiving chamber, 4...secondary pressure receiving chamber, 5...display space, 6...penetrating window, 7,
8...Through hole, 10...Spring, 13...
...Movable magnet, 16...Operating magnet, 17...Fixed magnet.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 受圧箱の内部にダイヤフラムの張設によって各々に通孔
を備えた一次受圧室と二次受圧室とを形成すると共に、
該受圧箱の外周面には二次受圧室に隣接して表示空間を
形成し、この表示空間の周壁一部に貫窓を設け、前記−
灰受圧室にはダイヤフラムを二次受圧室に向けて押圧す
るバネを設け、また二次受圧室にはダイヤフラムに共動
する可動マグネットを設け、更に表示空間には可動マグ
ネットに対設する回動自在の作動マグネットと、該作動
マグネットの外周囲に配置された固定マグネットとを設
け、前記作動マグネットの外周面に表示を形成し、この
作動マグネットと表示空間側に可動した可動マグネット
の励磁力をFlとし、作動マグネットと表示空間側より
離反する可動マグネットの励磁力をF2とし、更に作動
、マグネットと固定マグネットの励磁力をF3とした場
合にF 1> F a > F 2の関係をもたせてダ
イヤフラムの可動により作動マグネットを回動させるよ
うにしである事を特徴とする差圧表示装置。
A diaphragm is installed inside the pressure receiving box to form a primary pressure receiving chamber and a secondary pressure receiving chamber each having a through hole, and
A display space is formed adjacent to the secondary pressure receiving chamber on the outer circumferential surface of the pressure receiving box, and a through window is provided in a part of the peripheral wall of this display space.
The ash pressure receiving chamber is provided with a spring that presses the diaphragm toward the secondary pressure receiving chamber, and the secondary pressure receiving chamber is provided with a movable magnet that moves in conjunction with the diaphragm, and the display space is provided with a rotary magnet that opposes the movable magnet. A movable actuating magnet and a fixed magnet arranged around the outer periphery of the actuating magnet are provided, a display is formed on the outer peripheral surface of the actuating magnet, and the excitation force of the actuating magnet and the movable magnet moved toward the display space is When Fl is the excitation force of the movable magnet that separates from the operating magnet from the display space side, and F2 is the excitation force of the movable magnet that separates from the operating magnet, and F3 is the excitation force of the operating magnet and the fixed magnet, then the relationship F 1 > F a > F 2 is established. A differential pressure display device characterized in that an operating magnet is rotated by the movement of a diaphragm.
JP867878U 1978-01-25 1978-01-25 Differential pressure display device Expired JPS583083Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP867878U JPS583083Y2 (en) 1978-01-25 1978-01-25 Differential pressure display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP867878U JPS583083Y2 (en) 1978-01-25 1978-01-25 Differential pressure display device

Publications (2)

Publication Number Publication Date
JPS54112175U JPS54112175U (en) 1979-08-07
JPS583083Y2 true JPS583083Y2 (en) 1983-01-19

Family

ID=33018096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP867878U Expired JPS583083Y2 (en) 1978-01-25 1978-01-25 Differential pressure display device

Country Status (1)

Country Link
JP (1) JPS583083Y2 (en)

Also Published As

Publication number Publication date
JPS54112175U (en) 1979-08-07

Similar Documents

Publication Publication Date Title
US3846774A (en) Flow and differential pressure monitor
US2950733A (en) Flow control device
US2520547A (en) Linear pneumatic converter
JPS583083Y2 (en) Differential pressure display device
US4945771A (en) Integrated flow meter and vacuum gauge and use
JPS62501657A (en) two-way flow control valve
JPS583084Y2 (en) Differential pressure display device
US3249022A (en) Pressure-responsive device
US3359795A (en) Wind velocity instrument
US3735639A (en) Gauge pressure transmitter with interchangeable range elements and rupture protection
JPH02251727A (en) Differential pressure gage
GB553211A (en) Improvements in or relating to pressure gauges
JP2523005Y2 (en) Level detector
US2873606A (en) Flowmeters particularly for gases
JPS5913689B2 (en) Instrument pressure pulsation preventer
KR960005839Y1 (en) Gas flow meter
CN209945502U (en) Novel micro surface capacitance monitoring device of radio frequency admittance level meter
CN211452704U (en) Prevent disconnected line type differential pressure transmitter
USRE23800E (en) Remote meter registration device
CN216246962U (en) Detachable corrugated pipe
US3545276A (en) Indicator and a pressure indicating system
US3724269A (en) Fluid device having flow control and indicating means
JPS5848604Y2 (en) Overpressure prevention set valve type low pressure gauge
JPH022124Y2 (en)
JPH06323884A (en) Flow sensor