JPS5914746Y2 - pressure transducer - Google Patents
pressure transducerInfo
- Publication number
- JPS5914746Y2 JPS5914746Y2 JP10186678U JP10186678U JPS5914746Y2 JP S5914746 Y2 JPS5914746 Y2 JP S5914746Y2 JP 10186678 U JP10186678 U JP 10186678U JP 10186678 U JP10186678 U JP 10186678U JP S5914746 Y2 JPS5914746 Y2 JP S5914746Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- diaphragm
- main body
- pressure transducer
- fluid
- 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
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Description
【考案の詳細な説明】
本考案は、圧力変換器に係り、特にその受圧部構造に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressure transducer, and particularly to the structure of a pressure receiving part thereof.
圧力変換器は、被測定流体の圧力を電気信号に変換する
変換器部を有する本体と、この本体に結合され被測定流
体の圧力を供給する受圧フランジとから構成され、圧力
を単に変換するものの他に特定圧と比較して検出する差
圧方式のものがある。A pressure transducer consists of a main body that has a converter section that converts the pressure of the fluid to be measured into an electrical signal, and a pressure receiving flange that is coupled to this main body and supplies the pressure of the fluid to be measured. There is also a differential pressure type that detects by comparing it with a specific pressure.
また、特に高温で腐食性の被測定流体の圧力を検出する
場合は、第１図に示すように変換部への熱的影響、腐食
性を考慮した構造の圧力変換器１０が用いられている。In addition, when detecting the pressure of a fluid to be measured that is particularly corrosive at high temperatures, a pressure transducer 10 is used, as shown in FIG. .
すなわち、この圧力変換器１０は、受圧フランジ１１か
ら導入される被測定流体Ｐａの圧力を伝達する隔膜１２
を溶接する本体１６と変換部１３との間に熱的影響を受
けにくい伝達媒体１４を封入するとともにキャピラリ１
５をその連結管として用いその間隔がより長くなるよう
に構成されている。That is, this pressure transducer 10 includes a diaphragm 12 that transmits the pressure of the fluid Pa introduced from the pressure receiving flange 11.
A transmission medium 14 that is not easily affected by heat is sealed between the main body 16 to be welded and the conversion part 13, and a capillary 1
5 is used as the connecting pipe, and the interval between them is made longer.
一方、被測定流体Ｐａの外部への漏洩は、受圧フランジ
１１と本体１６との間に配置されたオーリング１７によ
り行なわれている。On the other hand, leakage of the measured fluid Pa to the outside is performed by an O-ring 17 disposed between the pressure receiving flange 11 and the main body 16.
１８はねじで、本体１６と受圧フランジ１１との結合用
のものである。Numeral 18 is a screw for connecting the main body 16 and the pressure receiving flange 11.
このように構成することにより、受圧フランジ１１から
導入された被測定流体Ｐａを、熱的影響を受けることな
く、隔膜１２及び伝達媒体１４を介して変換部１３で検
出することができる。With this configuration, the fluid to be measured Pa introduced from the pressure receiving flange 11 can be detected by the converter 13 via the diaphragm 12 and the transmission medium 14 without being affected by heat.
なお、受圧フランジ１１及び隔膜１２は、耐食性のある
特殊材質により構成されている。The pressure receiving flange 11 and the diaphragm 12 are made of a special corrosion-resistant material.
しかしながらこのように構成された圧力変換器には、次
のような欠点がある。However, the pressure transducer configured in this manner has the following drawbacks.
受圧フランジ１１と本体１６との結合部における被測定
流体Ｐａの外部への漏洩防止は、オーリング１７によっ
て行なわれている為、信頼性に乏しく、特に有害な被測
定流体、例えば腐食性、あるいは可燃性を有する圧力を
測定する場合には適していない。Since leakage of the measured fluid Pa to the outside at the joint between the pressure receiving flange 11 and the main body 16 is done by the O-ring 17, it is unreliable and prevents particularly harmful measured fluids, such as corrosive or Not suitable for measuring flammable pressure.
また、接液部分をチタン、タンタル等の高価な耐食性材
質で構成する場合、隔膜１２、受圧フランジ１１はもと
より隔膜１２の溶接性を考えて本体１６をも同一材質に
する必要があるため高価なものになる。In addition, when the wetted parts are made of expensive corrosion-resistant materials such as titanium and tantalum, it is necessary to use the same material for not only the diaphragm 12 and the pressure receiving flange 11 but also the main body 16 in consideration of the weldability of the diaphragm 12. Become something.
本考案は、このような点に対応してなされたもので、受
圧フランジに隔膜を溶接することにより被測定流体の外
部への漏洩防止を行うように構成した圧力変換器を提供
するものである。The present invention was developed in response to these points, and provides a pressure transducer configured to prevent leakage of the fluid to be measured to the outside by welding a diaphragm to the pressure receiving flange. .
以下、本考案の一実施例を第２図を参照して説明する。Hereinafter, one embodiment of the present invention will be described with reference to FIG.
受圧フランジ２０は、一端開口部に被測定流体Ｐａの導
入口を有し、他端開口部側には被測定流体Ｐａの圧力を
伝達する隔膜２１が位置している。The pressure receiving flange 20 has an inlet for the fluid Pa to be measured at an opening at one end, and a diaphragm 21 for transmitting the pressure of the fluid Pa to be measured is located at the opening at the other end.
この隔膜２１は、前記フランジ２０に溶接され、その他
端開口部を完全にシールしている。This diaphragm 21 is welded to the flange 20 and completely seals the opening at the other end.
また、前記フランジ２０の隔膜２１側には：゛圧力変換
器本体２２が取着されている。Further, on the diaphragm 21 side of the flange 20, a pressure transducer main body 22 is attached.
この本体２２の一端開口部側は、前記隔膜２１と対向し
、隔膜２１の異常変形を防止する形状となっている。One end opening side of the main body 22 faces the diaphragm 21 and has a shape that prevents the diaphragm 21 from being abnormally deformed.
また、この本体２２の他端には、キャピラリ２３を介し
て圧力−電気変換部２４が連結されている。Further, a pressure-electricity converter 24 is connected to the other end of the main body 22 via a capillary 23.
この変換部２４と隔膜２１との間には、例えば熱伝導率
、膨張率の小さい圧力伝達媒体２５が封入されている。A pressure transmission medium 25 having low thermal conductivity and low expansion coefficient is sealed between the converting portion 24 and the diaphragm 21 .
一方、圧力伝達媒体２５の外部への漏洩は、受圧フラン
ジ２０と本体２２との間に配置されたＯ−リング２６に
より行なわれている。On the other hand, leakage of the pressure transmission medium 25 to the outside is performed by an O-ring 26 disposed between the pressure receiving flange 20 and the main body 22.
２７はねじで、受圧フランジ２０と本体２２との結合用
のものである。27 is a screw for connecting the pressure receiving flange 20 and the main body 22.
このように構成することにより、被測定流体の受圧フラ
ンジと本体との結合部からの外部への漏洩は、受圧フラ
ンジと本体との溶接部分で完全に防止することができる
。With this configuration, leakage of the measured fluid to the outside from the joint between the pressure receiving flange and the main body can be completely prevented at the welded portion between the pressure receiving flange and the main body.
また、万一圧力伝達媒体が外部へ漏洩しても、隔膜の異
常変形を防止するバックアップが本体になされているの
で、隔膜が破損することはない。Furthermore, even if the pressure transmission medium leaks to the outside, the diaphragm will not be damaged because the main body has a backup mechanism to prevent abnormal deformation of the diaphragm.
したがって、隔膜破損により発生する被測定流体の外部
あるいは変換部側への漏洩を完全に防止することができ
る。Therefore, it is possible to completely prevent leakage of the fluid to be measured to the outside or to the conversion unit side due to diaphragm damage.
また、仮に受圧フランジおよび隔膜を高価な耐食性材料
で構成しても、受圧フランジに直接隔膜を溶接するよう
にしたので、本体と隔膜の溶接性を考慮する必要がない
為、受圧フランジ、隔膜の材質に対して本体を安価な異
種材質で形成することができる。In addition, even if the pressure receiving flange and diaphragm are made of expensive corrosion-resistant materials, since the diaphragm is welded directly to the pressure flange, there is no need to consider weldability between the main body and the diaphragm. The main body can be made of a different material that is cheaper than the other materials.
これにより価格の低減化をはかることができる。This makes it possible to reduce the price.
尚、高温、及び腐食性の被測定流体Ｐａの圧力を測定す
るのに適した圧力変換器を用いて説明したが、これに限
られることはなく水等の一般的な被測定流体の圧力変換
器はもとより、差圧変換器にも適用で゛きることはもち
ろんで゛ある。Although the explanation has been made using a pressure transducer suitable for measuring the pressure of the high temperature and corrosive fluid to be measured Pa, the present invention is not limited to this and can be used to convert the pressure of general fluids to be measured such as water. Of course, it can be applied not only to devices but also to differential pressure converters.
第１図は従来の圧力変換器を説明する為の一部切欠正面
図、第２図は本考案の一実施例を説明する為の一部切欠
正面図であり、図中２２は本体、２０は受圧フランジ、
２１は隔膜である。Fig. 1 is a partially cutaway front view for explaining a conventional pressure transducer, and Fig. 2 is a partially cutaway front view for explaining an embodiment of the present invention. is a pressure receiving flange,
21 is a diaphragm.
Claims (3)
ンジと、このフランジの他端開口部側にその開口部を密
封するごとく溶接され、被測定流体の圧力を伝達する隔
膜と、前記受圧フランジに結合され、前記隔膜を介して
伝達される被測定流体圧力を測定する圧力変換器本体と
具備したことを特徴とする圧力変換器。(1) A cylindrical pressure receiving flange having a fluid to be measured inlet at one end, and a diaphragm welded to the other end of the flange to seal the opening and transmit the pressure of the fluid to be measured; A pressure transducer comprising: a pressure transducer body coupled to the pressure receiving flange and configured to measure the pressure of the fluid to be measured transmitted via the diaphragm.
とを特徴とする実用新案登録請求の範囲第１項記載の圧
力変換器。(2) The pressure transducer according to claim 1, which has been registered as a utility model, characterized in that a diaphragm backup is provided in the pressure transducer main body.
に金属オーリングを用いたことを特徴とする実用新案登
録請求の範囲第１項記載の圧力変換器。(3) The pressure transducer according to claim 1, which is a registered utility model, characterized in that a metal O-ring is used in the main body side connecting portion between the pressure receiving flange and the pressure transducer main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10186678U JPS5914746Y2 (en) | 1978-07-26 | 1978-07-26 | pressure transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10186678U JPS5914746Y2 (en) | 1978-07-26 | 1978-07-26 | pressure transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5520405U JPS5520405U (en) | 1980-02-08 |
| JPS5914746Y2 true JPS5914746Y2 (en) | 1984-05-01 |
Family
ID=29040899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10186678U Expired JPS5914746Y2 (en) | 1978-07-26 | 1978-07-26 | pressure transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5914746Y2 (en) |
-
1978
- 1978-07-26 JP JP10186678U patent/JPS5914746Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5520405U (en) | 1980-02-08 |
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