JP3384736B2 - High corrosion resistance adapter for pressure receiving part of remote seal type transmitter - Google Patents

Description

【発明の詳細な説明】 【０００１】 【発明の属する技術分野】本発明は、腐食性の強い流体
に接液しその圧力を受圧する高耐食性ダイヤフラムを備
えたリモートシール型発信器の受圧部用高耐食性アダプ
タに関する。 【０００２】 【従来の技術】各種のプロセス流体の圧力等を測定する
ために用いられるリモートシール型の差圧又は圧力発信
器は、強腐食性、高粘性、凝縮性、高温、金属の析出等
を有するプロセス流体の測定用として効果的なものであ
り、その発信器本体側で圧力検出を行う検出部ボディか
ら離れた被測圧部側にプロセス圧力を受圧するシールダ
イヤフラムを備えた受圧部として２カ所又は１カ所に設
けると共に、これら受圧部と検出部ボディとの間をキャ
ピラリチューブでつなぎ、その内部に圧力伝達媒体とし
てシリコンオイル等の封入液を封入した液封構造とされ
ている。 【０００３】腐食性の強い流体の流量を測定するための
リモートシール型差圧発信器に於いて、受圧部のダイア
フラムは通常ＳＵＳ等の比較的耐食性の良い材料を使用
しているが、より腐食性の強い流体の場合は腐食してし
まうので、特別にダイヤフラム面に金メッキ、或いはテ
フロンコーティング等を行い耐食性の向上を図る。この
場合、受圧部のダイヤフラムに直接金メッキ、或いはテ
フロンコーティングするのではなく、あらかじめ接液面
のダイヤフラムが高耐食性コーティングされている別の
ユニット、即ち高耐食性アダプタを本来の標準品の受圧
部の受圧面の外側に密着して取り付け、アダプタの接液
側の高耐食性ダイヤフラムの検出した圧力が受圧部に伝
導されるような構造となっている。 【０００４】図３は従来のアダプタＢを受圧部Ａに取り
付けた状態を示す図である。アダプタＢは、高耐食性ダ
イヤフラム２０と円柱状アダプタ部材１０を有する。ア
ダプタ部材１０には、接液側に高耐食性ダイヤフラム２
０が取り付けられる接液側凹部１２と、受圧部ダイヤフ
ラム２に面する受圧部側凹部１３と、接液側凹部１２と
受圧部側凹部１３をつなぐ圧力伝達用連通路１６とが設
けられている。２１は高耐食性ダイヤフラム２０が検出
した圧力を受圧部ダイヤフラム２に伝達するための封入
液、１９は封入液２１の漏洩を防ぐためのＯリングであ
る。１５は封入液充填用通路、１１は封入液注入口であ
る。１７は取り付け用ネジ穴で、アダプタ部材１０の受
圧部側の端面に複数個例えば４個、等間隔に設けられて
いる。 【０００５】受圧部Ａは円柱状受圧部部材１と受圧部ダ
イヤフラム２を有する。受圧部部材１には１個のＯリン
グ取り付け用円環状溝１８がダイヤフラム２が取り付け
られている側の端面に設けられており、更に複数の取り
付け用ボルト穴８が前記取り付け用ネジ穴１７に対向し
た位置に受圧部部材１を貫通して設けられている。アダ
プタＢを受圧部Ａに取り付けた場合、ボルト７をボルト
穴８に通してネジ穴１７に螺合させる。なお３は封入
液、４は圧力伝達路、５は受圧部Ａと発信器本体とを連
通するキャピラリチューブである。台座Ｃは受圧部Ａを
プロセス装置の壁面等に取り付けるためのもので、図示
されていないボルト等の固定手段によって受圧部部材１
は板状台座部材６に固定され、従って、受圧部Ａはアダ
プタＢと一緒に台座Ｃに取り付けられる。板状台座部材
６の外周に設けられている複数のボルト穴９は、台座Ｃ
を例えばプラント内の設置手段に取り付けるためのもの
である。 【０００６】アダプタＢを必要とする場合は完成品の受
圧部Ａに工場で取り付け用ボルト穴８をあけ、Ｏリング
取り付け用円環状溝１８の加工とＯリング１９の取り付
けを行い、治具等で精密に相互の位置を合わせ受圧部Ａ
とアダプタＢをボルトで組み付け、封入液の充填等を行
い台座Ｃへ取り付けアダプタ付き高耐食性発信器として
出荷していた。受圧部が完成品でありながら追加工を施
すため特殊品扱いになり特別な指図や追加工図面作成、
加工組立実施等の複雑な処理を行うため価格のアップ、
納期遅延等の問題が発生していた。 【０００７】又、現場で不良になったアダプタＢを交換
する場合、まず台座Ｃからアダプタ付き受圧部Ａを取り
外し、取り付け用ボルトを外し受圧部からアダプタＢを
外し、新品のアダプタＢと交換する作業を行っていた。
受圧部Ａに取り付けられているＯリング１９の交換、受
圧部ダイヤフラム２の清掃、新品アダプタＢの組み付け
位置合わせ、封入液の充填等を現場で実施していたが、
本来手を触れるべきでない受圧部のダイヤフラム周辺の
Ｏリング取り付け及び再組立は不確実でやり直し等が発
生し、ダイヤフラムを変形させたり破損する場合があ
り、不都合が生じやすい構造であった。 【０００８】 【発明が解決しようとする課題】発明が解決しようとす
る課題は、標準仕様の受圧部に一切追加工することな
く、受圧部に容易に取り付けできる構造のリモートシー
ル型発信器の受圧部用高耐食性アダプタを提供すること
である。 【０００９】 【課題を解決すための手段】上記課題を解決するため
に、本発明はアダプタをボルトで受圧部に直接結合する
のではなく、台座とアダプタで受圧部を挟持するように
してアダプタを受圧部に取り付けるようにした。台座と
アダプタで受圧部を挟持するために、本発明は高耐食性
ダイヤフラムと、接液側端面に該高耐食性ダイヤフラム
が配置される接液側円形凹部が且つ受圧部側端面に受圧
部側円形凹部がそれぞれ形成されたアダプタ部材を有
し、台座に背面を接して固定された受圧部の円形端面に
前記受圧部側端面を接して取り付けられる受圧部用高耐
食性アダプタにおいて、前記アダプタ部材の受圧部側端
面に受圧部との接合面の外側に外縁部を設けた。そし
て、前記台座から前記外縁部まで延びたボルトでボルト
締めすることによって、アダプタを受圧部に取り付ける
ようにした。 【００１０】また、前記アダプタ部材の受圧部側端面に
受圧部の円形端面と嵌合する嵌合用円形凹部を設け、ア
ダプタの受圧部への取り付け作業を迅速且つ正確に行え
るようにした。更に前記アダプタ部材の受圧部側端面に
Ｏリング取り付け用円環状溝を設け、受圧部には何らの
追加工を要しないようにした。 【００１１】 【発明の実施の形態】図１は本発明の第１実施例のアダ
プタＢを受圧部Ａに取り付けた状態を示す図である。非
突出型アダプタＢは受圧部Ａを台座Ｃと両側から挟むよ
うにして受圧部Ａに取り付けられる。アダプタＢは、図
３に示した従来のものと同じく、高耐食性ダイヤフラム
２０と円柱状アダプタ部材１０を有する。円柱状アダプ
タ部材１０には、接液側に高耐食性ダイヤフラム２０が
取り付けられる接液側凹部１２と、受圧部ダイヤフラム
２に面する受圧部側凹部１３と、接液側凹部１２と受圧
部側凹部１３をつなぐ圧力伝達用連通路１６とが設けら
れている。封入液２１、封入液充填用通路１５、封入液
注入口１１も従来のものと同様に設けられている。アダ
プタ取り付け用ネジ穴１７は、アダプタ部材１０の受圧
部側端面に複数個例えば４個、等間隔に設けられてい
る。 【００１２】円柱状アダプタ部材１０は、受圧部側凹部
１３が形成されている受圧部側端面の外径を受圧部Ａよ
りも大きくしてある。そして、複数のアダプタ取り付け
用ネジ穴１７は、円柱状アダプタ部材１０の受圧部側端
面に、受圧部Ａの円形外縁よりも外側の部分、即ち受圧
部Ａとの接合面の外側に設けられた外縁部２２に円周上
に等間隔に設けられている。また、円柱状アダプタ部材
１０の受圧部側端面には受圧部Ａの円形端面と嵌合する
嵌合用円形凹部１４が設けられている。この場合、受圧
部側凹部１３は、嵌合用円形凹部１４内に同心にして形
成される。更に、嵌合用円形凹部１４内には、受圧部側
凹部１３の外側の部分に封入液漏洩防止用Ｏリング１９
が挿入配置されるＯリング取り付け用円環状溝１８が設
けられている。嵌合用円形凹部１４は、アダプタＢを受
圧部Ａに取り付け又はアダプタＢを受圧部Ａから取り外
す作業を容易にするものである。 【００１３】図２は本発明の第２実施例の突出型アダプ
タＢを受圧部Ａに取り付けた状態を示す図である。突出
型アダプタＢも受圧部Ａを台座Ｃと両側から挟むように
して受圧部Ａに取り付けられる。突出型アダプタＢは、
図１に示した非突出型アダプタにおいて高耐食性ダイヤ
フラム２０を受圧部Ａのダイヤフラムから離して配置す
るために、そのアダプタ部材１０が円柱状でなく円筒状
となっているものである。即ち、突出型アダプタＢの円
筒状アダプタ部材１０は、接液側の面に高耐食性ダイヤ
フラム２０が配置され固着される接液側円形凹部１２が
形成された接液側円柱部材１０ｂ、受圧部側端面に受圧
部ダイヤフラム２に対面する受圧部側円形凹部１３が形
成された受圧部側円柱部材１０ａ及びこれら２つの円柱
部材を結合する円筒部材１０ｃとを有する。圧力伝達用
連通路１６は、突出型アダプタＢにおいては、基本的に
はキャピラリチューブである。 【００１４】円筒状アダプタ部材１０の受圧部側円柱部
材１０ａは、受圧部側凹部１３が形成されている受圧部
側端面の外径を受圧部Ａよりも大きくしてある。そし
て、複数のアダプタ取り付け用ネジ穴１７は、受圧部側
円柱部材１０ａの受圧部側端面に、受圧部Ａの円形外縁
よりも外側の部分、即ち受圧部Ａとの接合面の外側に設
けられた外縁部２２に円周上に等間隔に設けられてい
る。また、円筒状アダプタ部材１０の受圧部側円柱部材
１０ａの受圧部側端面には受圧部Ａの円形端面と嵌合す
る嵌合用円形凹部１４が設けられている。この場合、受
圧部側凹部１３は、嵌合用円形凹部１４内に同心にして
形成される。更に、嵌合用円形凹部１４内には、受圧部
側凹部１３の外側の部分に封入液漏洩防止用Ｏリング１
９が挿入配置されるＯリング取り付け用円環状溝１８が
設けられている。嵌合用円形凹部１４は、アダプタＢを
受圧部Ａに取り付け又はアダプタＢを受圧部Ａから取り
外す作業を容易にするものである。 【００１５】 【００１６】 【発明の効果】以上説明したように本発明においては、
受圧部にはアダプタを取り付けるための加工を何ら施す
ことなく、台座とアダプタで受圧部を挟持して台座とア
ダプタをボルト等の結合手段で結合し、これによって受
圧部にアダプタを取り付けるようにしたものである。こ
のような構造であるため、アダプタの受圧部への取り付
け取り外し作業が非常に簡単である。従来行われていた
受圧部へのアダプタ取り付け用のボルト穴やＯリング取
り付け用円環状溝の加工は、本発明では不要になった。
従って、高耐食性アダプタ付受圧部を備えたリモートシ
ール型発信器を低価格で提供することが可能になった。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure receiving portion of a remote seal type transmitter having a highly corrosion resistant diaphragm which comes into contact with a highly corrosive fluid and receives the pressure. The present invention relates to a high corrosion resistant adapter. 2. Description of the Related Art A remote seal type differential pressure or pressure transmitter used for measuring the pressure of various process fluids, etc., has strong corrosiveness, high viscosity, condensability, high temperature, metal deposition, etc. It is effective for the measurement of process fluids having a pressure-sensitive part that has a seal diaphragm that receives the process pressure on the part to be measured that is remote from the detecting part body that performs pressure detection on the transmitter body side. A liquid sealing structure is provided in two or one place, and the pressure receiving section and the detecting section body are connected by a capillary tube, and a sealed liquid such as silicone oil is sealed therein as a pressure transmission medium. [0003] In a remote seal type differential pressure transmitter for measuring the flow rate of a highly corrosive fluid, a diaphragm of a pressure receiving portion is usually made of a material having relatively high corrosion resistance such as SUS. If the fluid has a strong property, it will corrode, so that the diaphragm surface is specially plated with gold or Teflon to improve the corrosion resistance. In this case, instead of directly applying gold plating or Teflon coating to the diaphragm of the pressure receiving part, another unit in which the diaphragm on the liquid contact surface is coated with high corrosion resistance in advance, that is, a high corrosion resistance adapter is used as the pressure receiving part of the original standard product pressure receiving part. The structure is such that the pressure detected by the high corrosion resistant diaphragm on the liquid contact side of the adapter is transmitted to the pressure receiving portion in close contact with the outside of the surface. FIG. 3 is a view showing a state in which a conventional adapter B is attached to a pressure receiving portion A. The adapter B has a highly corrosion-resistant diaphragm 20 and a columnar adapter member 10. The adapter member 10 has a highly corrosion-resistant diaphragm 2 on the liquid contact side.
The pressure-receiving-side concave portion 13 facing the pressure-receiving-portion diaphragm 2 and the pressure-transmitting communication passage 16 that connects the liquid-contact-side concave portion 12 and the pressure-receiving-portion-side concave portion 13 are provided. . Reference numeral 21 denotes a sealed liquid for transmitting the pressure detected by the high corrosion resistant diaphragm 20 to the pressure receiving diaphragm 2, and reference numeral 19 denotes an O-ring for preventing leakage of the sealed liquid 21. Reference numeral 15 denotes a filling liquid filling passage, and reference numeral 11 denotes a filling liquid injection port. Reference numeral 17 denotes a mounting screw hole, which is provided on the end face of the adapter member 10 on the pressure receiving portion side in plural numbers, for example, four at equal intervals. The pressure receiving section A has a columnar pressure receiving section member 1 and a pressure receiving section diaphragm 2. The pressure receiving member 1 is provided with one O-ring mounting annular groove 18 on the end face on which the diaphragm 2 is mounted, and a plurality of mounting bolt holes 8 in the mounting screw holes 17. The pressure receiving portion member 1 is provided at an opposed position through the pressure receiving portion member 1. When the adapter B is attached to the pressure receiving portion A, the bolt 7 is passed through the bolt hole 8 and screwed into the screw hole 17. Reference numeral 3 denotes a sealed liquid, 4 denotes a pressure transmission path, and 5 denotes a capillary tube which connects the pressure receiving portion A and the transmitter main body. The pedestal C is for attaching the pressure receiving portion A to a wall surface or the like of the process apparatus, and the pressure receiving member 1 is fixed by fixing means such as a bolt (not shown).
Is fixed to the plate-shaped pedestal member 6, so that the pressure receiving portion A is attached to the pedestal C together with the adapter B. The plurality of bolt holes 9 provided on the outer periphery of the plate-shaped pedestal member 6
Is attached, for example, to installation means in a plant. When an adapter B is required, a bolt hole 8 for mounting is formed in the pressure receiving portion A of the finished product at a factory, an O-ring mounting annular groove 18 is processed, and an O-ring 19 is mounted. Pressure receiving part A
And the adapter B were assembled with bolts, filled with the sealed liquid, mounted on the pedestal C, and shipped as a high corrosion resistant transmitter with an adapter. Although the pressure receiving part is a finished product, it is treated as a special product because it is subjected to additional processing, and special instructions and additional processing drawings are created.
Price increases due to complex processing such as processing and assembly,
Problems such as late delivery have occurred. When replacing a defective adapter B at the site, first remove the pressure receiving portion A with the adapter from the pedestal C, remove the mounting bolt, remove the adapter B from the pressure receiving portion, and replace it with a new adapter B. I was working.
The replacement of the O-ring 19 attached to the pressure receiving portion A, the cleaning of the pressure receiving portion diaphragm 2, the alignment of the new adapter B, the filling of the filled liquid, and the like were performed on site.
Attachment and reassembly of the O-ring around the diaphragm of the pressure receiving portion, which should not be touched, is unreliable, and redoing or the like may occur, which may deform or damage the diaphragm. [0008] The problem to be solved by the present invention is to provide a remote seal type transmitter having a structure which can be easily attached to the pressure receiving portion without any additional work on the standard pressure receiving portion. It is an object of the present invention to provide a high corrosion resistant adapter for parts. In order to solve the above-mentioned problems, the present invention does not directly connect the adapter to the pressure receiving portion with bolts, but rather holds the pressure receiving portion between the base and the adapter. Was attached to the pressure receiving portion. In order to sandwich the pressure receiving portion between the pedestal and the adapter, the present invention provides a high corrosion resistant diaphragm, a liquid contact side circular concave portion where the high corrosion resistant diaphragm is disposed on the liquid contact side end surface, and a pressure receiving portion side circular concave portion on the pressure receiving portion side end surface. A high pressure corrosion resistant adapter for a pressure receiving section, which has an adapter member formed respectively, and is attached by contacting the pressure receiving section side end face to a circular end face of the pressure receiving section fixed with the back surface in contact with the pedestal; An outer edge portion was provided on the side end surface outside the joint surface with the pressure receiving portion. Then, the adapter is attached to the pressure receiving portion by bolting with a bolt extending from the pedestal to the outer edge. [0010] In addition, a circular recess for fitting is provided on the pressure receiving portion side end surface of the adapter member so as to fit with the circular end surface of the pressure receiving portion, so that the work of attaching the adapter to the pressure receiving portion can be performed quickly and accurately. Further, an annular groove for attaching an O-ring is provided on an end face of the adapter member on the pressure receiving portion side, so that no additional processing is required for the pressure receiving portion. FIG. 1 is a view showing a state in which an adapter B according to a first embodiment of the present invention is attached to a pressure receiving portion A. The non-projecting type adapter B is attached to the pressure receiving portion A so as to sandwich the pressure receiving portion A from both sides of the pedestal C. The adapter B includes a highly corrosion-resistant diaphragm 20 and a columnar adapter member 10, as in the conventional adapter shown in FIG. The cylindrical adapter member 10 has a liquid-contact-side concave portion 12 on which a high-corrosion-resistant diaphragm 20 is attached on the liquid-contact side, a pressure-receiving-portion-side concave portion 13 facing the pressure-receiving-portion diaphragm 2, a liquid-contact-side concave portion 12, and a pressure-receiving-portion-side concave portion. A communication passage 16 for pressure transmission is provided to connect the communication passages 13. The filling liquid 21, the filling liquid filling passage 15, and the filling liquid inlet 11 are also provided in the same manner as the conventional one. A plurality of, for example, four, adapter mounting screw holes 17 are provided at equal intervals on the pressure-receiving-portion-side end surface of the adapter member 10. In the cylindrical adapter member 10, the outer diameter of the pressure receiving portion side end surface in which the pressure receiving portion side concave portion 13 is formed is larger than that of the pressure receiving portion A. A plurality of adapter screw holes 17, the pressure receiving portion side end surface of the cylindrical adapter member 10, outside portion of the circular outer edge of the pressure receiving portion A, i.e. disposed outside the junction surface between the pressure receiving portion A The outer edge portion 22 is provided at equal intervals on the circumference. The cylindrical adapter member 10 has a pressure receiving portion side end surface provided with a fitting circular concave portion 14 that fits with the circular end surface of the pressure receiving portion A. In this case, the pressure receiving portion side recess 13 is formed concentrically in the fitting circular recess 14 . Further, in the fitting circular concave portion 14, an O-ring 19 for preventing leakage of the sealed liquid is provided in a portion outside the pressure receiving portion side concave portion 13.
Is provided with an O-ring mounting annular groove 18 into which the O-ring is inserted. The circular recess 14 for fitting receives the adapter B.
Attach to pressure part A or remove adapter B from pressure receiving part A
This makes the work easier. FIG. 2 is a view showing a state in which a protruding type adapter B according to a second embodiment of the present invention is attached to a pressure receiving portion A. The protruding adapter B is also attached to the pressure receiving portion A so as to sandwich the pressure receiving portion A from both sides of the pedestal C. The protruding adapter B is
In the non-projection type adapter shown in FIG. 1, the adapter member 10 has a cylindrical shape instead of a cylindrical shape in order to dispose the high corrosion resistant diaphragm 20 away from the diaphragm of the pressure receiving portion A. That is, the circle of the protruding adapter B
The cylindrical adapter member 10 includes a liquid-contacting side cylindrical member 10b having a liquid-contacting-side circular concave portion 12 on which a highly corrosion-resistant diaphragm 20 is disposed and fixed on the liquid-contacting side surface. and a cylindrical member 10c coupling the opposite pressure receiving portion side cylindrical member 10a pressure receiving portion side circular recess 13 is formed for and the two cylindrical members. The communication passage for pressure transmission 16 is basically a capillary tube in the protruding adapter B. The pressure-receiving-portion-side cylindrical member 10a of the cylindrical adapter member 10 has a pressure-receiving-portion-side end face in which the pressure-receiving-portion-side recess 13 is formed, and has an outer diameter larger than that of the pressure-receiving portion A. A plurality of adapter screw holes 17, the pressure receiving portion side end surface of the pressure receiving portion side cylindrical member 10a, outside portion of the circular outer edge of the pressure receiving portion A, i.e., provided on the outside of the joint surface of the pressure receiving portion A The outer peripheral portion 22 is provided at equal intervals on the circumference. In addition, a pressure-receiving-portion-side cylindrical member of the cylindrical adapter member 10.
In the pressure receiving portion side end surface of 10a , a fitting circular concave portion 14 that fits with the circular end surface of the pressure receiving portion A is provided. In this case, the pressure receiving portion side recess 13 is formed concentrically in the fitting circular recess 14 . Further, in the fitting circular concave portion 14, an O-ring 1 for preventing leakage of the sealed liquid is provided in a portion outside the pressure receiving portion side concave portion 13.
An O-ring mounting annular groove 18 into which the 9 is inserted is provided. The circular recess 14 for fitting
Attach to pressure receiving section A or remove adapter B from pressure receiving section A
This facilitates the removal operation. As described above, according to the present invention,
The pressure-receiving part is not subjected to any processing for mounting the adapter, the pressure-receiving part is sandwiched between the pedestal and the adapter, and the pedestal and the adapter are connected by a coupling means such as a bolt, thereby attaching the adapter to the pressure-receiving part. Things. With such a structure, the work of attaching and detaching the adapter to and from the pressure receiving portion is very simple. In the present invention, the machining of the bolt hole for attaching the adapter to the pressure receiving portion and the annular groove for attaching the O-ring to the pressure receiving portion, which has been conventionally performed, are not required.
Therefore, it has become possible to provide a remote seal type transmitter having a pressure-receiving part with a high corrosion resistance adapter at a low price.

【図面の簡単な説明】 【図１】本発明に係る非突出型アダプタを取り付けた状
態を示す図である。 【図２】本発明に係る突出型アダプタを取り付けた状態
を示す図である。 【図３】従来の非突出型アダプタを取り付けた状態を示
す図である。 【符号の説明】 Ａ 受圧部 Ｂ アダプタ Ｃ 台座 １ 受圧部部材 ２ 受圧部ダイヤフラム ３ 封入液 ４ 圧力伝達路 ５ キャピラリチューブ ６ 台座部材 ７ 取付用ボルト ８ 取付用ボルト穴 ９ 台座取り付け穴 １０ 円柱状アダプタ部材 １０ａ 受圧部側円柱部材 １０ｂ 接液側円柱部材 １０ｃ 円筒部材 １１ 注入口 １２ 接液側円形凹部 １３ 受圧部側円形凹部 １４ 嵌合用円形凹部 １５ 封入液充填用通路 １６ 圧力伝達用連通路 １７ 取付用ネジ穴 １８ Ｏリング取り付け用円環状溝 １９ Ｏリング ２０ 高耐食性ダイヤフラム ２１ 封入液 ２２ 外縁部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a state where a non-projection type adapter according to the present invention is attached. FIG. 2 is a view showing a state where a protruding adapter according to the present invention is attached. FIG. 3 is a view showing a state where a conventional non-projection type adapter is attached. [Description of References] A Pressure receiving part B Adapter C Pedestal 1 Pressure receiving part member 2 Pressure receiving part diaphragm 3 Filled liquid 4 Pressure transmission path 5 Capillary tube 6 Base member 7 Mounting bolt 8 Mounting bolt hole 9 Base mounting hole 10 Cylindrical adapter Member 10a Pressure receiving portion side cylindrical member 10b Liquid contact side cylindrical member 10c Cylindrical member 11 Inlet 12 Liquid contact side circular concave portion 13 Pressure receiving portion side circular concave portion 14 Fitting circular concave portion 15 Filled liquid filling passage 16 Pressure transmitting communication passage 17 Mounting Screw hole 18 O-ring mounting annular groove 19 O-ring 20 High corrosion-resistant diaphragm 21 Filled liquid 22 Outer edge

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.⁷，ＤＢ名) G01L 13/00 G01L 19/00 G01L 19/06 ──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G01L 13/00 G01L 19/00 G01L 19/06

Claims (1)

(57)【特許請求の範囲】 【請求項１】 高耐食性ダイヤフラムと、接液側端面に
該耐食性ダイヤフラムが配置される接液側円形凹部が且
つ受圧部側端面に受圧部側円形凹部がそれぞれ形成され
たアダプタ部材を有し、台座に背面を接して固定された
受圧部の円形端面に前記受圧部側端面を接して取り付け
られる受圧部用高耐食性アダプタにおいて、前記アダプ
タ部材の受圧部側端面には前記受圧部との接合面の外側
に外縁部が設けられ、前記台座から前記外縁部まで延び
たボルトによってボルト締めされて前記受圧部に取り付
けられること、及び前記アダプタ部材の受圧部側端面に
前記受圧部の円形端面と嵌合する嵌合用円形凹部を設け
たことを特徴とするリモートシール型発信器の受圧部用
高耐食性アダプタ。(1) A high-corrosion-resistant diaphragm, a liquid-contact-side circular concave portion in which the corrosion-resistant diaphragm is disposed on a liquid-contact-side end surface, and a pressure-receiving-portion-side circular concave portion on a pressure-receiving-portion-side end surface. A high corrosion resistance adapter for a pressure-receiving part, having a formed adapter member and attached with the pressure-receiving part side end face in contact with a circular end face of a pressure-receiving part fixed with a back surface in contact with a pedestal, wherein the pressure-receiving part-side end face of the adapter member is provided. outer portion is provided on the outside of the joint surface between the pressure receiving portion to, it is attached to the pressure receiving portion is bolted by bolts extending from said base to said outer edge, and the pressure receiving portion side end surface of the adapter member To
Providing a circular recess for fitting to be fitted with a circular end surface of the pressure receiving portion.
Remote seal type transmitter high corrosion resistance adapter of the pressure receiving portion, characterized in that the.