JPH041525A - Pressure takeout mechanism of orifice flowmeter - Google Patents
Pressure takeout mechanism of orifice flowmeterInfo
- Publication number
- JPH041525A JPH041525A JP10242390A JP10242390A JPH041525A JP H041525 A JPH041525 A JP H041525A JP 10242390 A JP10242390 A JP 10242390A JP 10242390 A JP10242390 A JP 10242390A JP H041525 A JPH041525 A JP H041525A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- ring
- orifice
- outside
- orifice plate
- 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.)
- Pending
Links
- 238000000605 extraction Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 abstract description 15
- 230000007547 defect Effects 0.000 abstract description 9
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 238000007689 inspection Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は絞り流量計に於ける圧力取出機構に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a pressure extraction mechanism in a throttle flowmeter.
（従来の技術）
絞り流量計に於けるオリフィスの差圧測定用の圧力取出
機構の従来の構成は１例えば第３図に示すように、オリ
フィスプレートａを挾持するリングｂに差圧測定用導圧
路Ｃを形成し、この導圧路Ｃの端部に圧力取出管ｄを嵌
入した後、該圧力取出管ｄの周囲とリングｂの外側間を
溶接して連結している。(Prior Art) The conventional configuration of a pressure take-out mechanism for measuring differential pressure at an orifice in a throttle flowmeter is 1. For example, as shown in FIG. A pressure passage C is formed, and a pressure take-off pipe d is fitted into the end of the pressure passage C, and then the periphery of the pressure take-off pipe d and the outside of the ring b are connected by welding.
（発明が解決しようとする課題）
上記の機構では、溶接部ｅの構成上、溶接欠陥の検査、
例えばＸ線を用いた検査を確実に行うことができず、完
全な検査が困難であるばかりでなく、溶接部に於ける応
力腐食やリングの内側からのすきま腐食等が発生し易い
という課題がある。(Problems to be Solved by the Invention) In the above mechanism, due to the structure of the welded part e, inspection of welding defects,
For example, it is not possible to perform inspections using X-rays reliably, making it difficult to perform complete inspections, and there are also problems such as stress corrosion in welds and crevice corrosion from inside the ring. be.
本発明はこのような課題を解決することを目的とするも
のである。The present invention aims to solve such problems.
（課題を解決するための手段）
上記の課題を解決するために、本発明の絞り流量計に於
ける圧力取出機構は、オリフィスプレートを支持し、そ
のオリフィスの差圧測定用導圧路を設けたリングの外側
に、該導圧路と連通ずる連結用筒状体を一体に突出形成
し、該筒状体の端部に圧力取出管の端部を溶接して連結
したものである。(Means for Solving the Problems) In order to solve the above problems, the pressure extraction mechanism in the throttle flowmeter of the present invention supports an orifice plate and is provided with a pressure channel for measuring the differential pressure of the orifice. A connecting cylindrical body communicating with the pressure guiding path is integrally formed on the outside of the ring, and the end of the pressure take-off pipe is welded and connected to the end of the cylindrical body.
上記の構成に於いて、リングは、オリフィスプレートを
挟持して支持する構成とすることもできるし、オリフィ
スプレートと一体に構成して支持する構成とすることも
できる。In the above configuration, the ring can be configured to sandwich and support the orifice plate, or can be configured to be integrated with and supported by the orifice plate.
（作用）
上記の構成に於いては、溶接部はリングの外側に離れた
位置に形成されるので、この溶接部にＸ線を透過させて
行う溶接欠陥の検査を容易に、確実に行うことができる
。また、溶接部は筒状体の端部と圧力取出管の端部間に
形成するので溶接作業が容易で、溶接欠陥が発生し難く
、また溶接部の応力除去も容易に行えるので、応力腐食
やすきま腐食も発生し難い。(Function) In the above configuration, since the welded portion is formed at a position away from the outside of the ring, inspection for welding defects by transmitting X-rays through this welded portion can be easily and reliably performed. I can do it. In addition, since the weld is formed between the end of the cylindrical body and the end of the pressure relief pipe, welding work is easy and welding defects are less likely to occur, and stress can be easily removed from the weld, resulting in stress corrosion. Crevice corrosion is also less likely to occur.
（実施例）
次に本発明の実施例を第１図、第２図について説明する
。(Example) Next, an example of the present invention will be described with reference to FIGS. 1 and 2.
図に於いて、符号ｌは絞り流量計のオリフィス２を形成
しているオリフィスプレートであり、符号３はオリフィ
スプレート１を支持すると共に、オリフィス２の差圧測
定用導圧路４を設けたリングである。第１図に示すリン
グ３は前記オリフィスプレート１を挾持して支持する構
成としており、第２図に示すリング３は前記オリフィス
プレートｌと一体に構成して支持する構成としている。In the figure, reference numeral 1 indicates an orifice plate forming the orifice 2 of the throttle flowmeter, and reference numeral 3 indicates a ring that supports the orifice plate 1 and is provided with a pressure guide path 4 for measuring the differential pressure of the orifice 2. It is. The ring 3 shown in FIG. 1 is constructed to sandwich and support the orifice plate 1, and the ring 3 shown in FIG. 2 is constructed integrally with the orifice plate I to support it.
しかして前記リング３の外側に、前記導圧路４と連通す
る連結用筒状体５を一体に突出形成する。A connecting cylindrical body 5 communicating with the pressure guiding path 4 is integrally formed on the outside of the ring 3 to protrude.
そして、この筒状体５の端部に圧力取出管６の端部を溶
接して連結する。この溶接部７は、リング３の外側に離
れた位置に形成されるので、この溶接部７にＸ線を透過
させて行う溶接欠陥の検査を容易に、確実に行うことが
できる。また、溶接部７は筒状体５の端部と圧力取出管
６の端部間に形成するので、溶接作業が容易で、溶接欠
陥が発生し難く、また溶接部７の応力除去も容易に行え
るので、応力腐食やすきま腐食も発生し難い。従って本
発明の機構は、高温、高圧及び極低温個所に使用するこ
とができる６尚、第２図中符号８は圧力取出管６の他の
端部に構成したフランジ、符号９はリング３を挾持して
設置する流体移送ｆｌ。Then, the end of the pressure take-off pipe 6 is welded and connected to the end of this cylindrical body 5. Since this welded portion 7 is formed at a position apart from the outside of the ring 3, inspection for welding defects can be easily and reliably performed by transmitting X-rays through this welded portion 7. In addition, since the welded part 7 is formed between the end of the cylindrical body 5 and the end of the pressure outlet pipe 6, welding work is easy, welding defects are less likely to occur, and stress in the welded part 7 can be easily removed. Stress corrosion and crevice corrosion are less likely to occur. Therefore, the mechanism of the present invention can be used in high temperature, high pressure, and cryogenic locations 6. In FIG. Fluid transfer fl that is installed by clamping.
フランジである。It is a flange.
（発明の効果）
本発明は以上の通り、絞り流量計に於いて、オリフィス
プレートを支持するリングに設けたオリフィスの差圧測
定用導圧路と連結する圧力取出管を、リングの外側に一
体に突出形成した連結用筒状体の端部に溶接して連結し
たので、溶接部にＸ線を透過させて行う溶接欠陥の検査
を容易に、確実に行うことができると共に、溶接作業が
容易で、溶接欠陥が発生し難く、また溶接部の応力除去
も容易に行えるので、応力腐食やすきま腐食も発生し難
いという効果がある。こうして、本発明の機構は、高温
、高圧及び極低温個所に於ける流量測定に使用すること
ができるという効果がある。(Effects of the Invention) As described above, the present invention provides a throttle flowmeter in which a pressure extraction pipe connected to a pressure channel for measuring differential pressure of an orifice provided in a ring supporting an orifice plate is integrated on the outside of the ring. Since the connection is made by welding to the end of the connecting cylindrical body formed protruding from the outside, it is possible to easily and reliably inspect welding defects by transmitting X-rays through the welded area, and also facilitate welding work. Therefore, welding defects are less likely to occur, and stress in the welded portion can be easily removed, so stress corrosion and crevice corrosion are less likely to occur. Thus, the mechanism of the invention has the advantage that it can be used for flow measurements at high temperature, high pressure and cryogenic locations.
第１図は本発明の一実施例の構成を表した説明的断面図
、第２図は本発明の他の構成を表した説明的断面図、第
３図は従来例の構成を表した説明的断面図である。
符号１・・・オリフィスプレート、２・・・オリフィス
、３・・・リング、４・・差圧測定用導圧路、５・・・
連結用筒状体、６・・・圧力取出管、７・・溶接部、８
・・フランジ、９・・・フランジ、１０・・・流体移送
管。
第１
図
第２図FIG. 1 is an explanatory sectional view showing the configuration of one embodiment of the present invention, FIG. 2 is an explanatory sectional view showing another configuration of the present invention, and FIG. 3 is an explanatory sectional view showing the configuration of a conventional example. FIG. Symbol 1... Orifice plate, 2... Orifice, 3... Ring, 4... Pressure path for differential pressure measurement, 5...
Connection cylindrical body, 6... Pressure extraction pipe, 7... Welded part, 8
...Flange, 9...Flange, 10...Fluid transfer pipe. Figure 1 Figure 2
Claims (3)
差圧測定用導圧路を設けたリングの外側に、該導圧路と
連通する連結用筒状体を一体に突出形成し、該筒状体の
端部に圧力取出管の端部を溶接して連結したことを特徴
とする絞り流量計に於ける圧力取出機構(1) A connecting cylindrical body that communicates with the pressure path is integrally formed on the outside of a ring that supports the orifice plate and is provided with a pressure path for measuring the differential pressure of the orifice, and the cylindrical body A pressure takeoff mechanism in a throttle flowmeter, characterized in that the end of a pressure takeoff pipe is welded and connected to the end of the
する構成としたことを特徴とする絞り流量計に於ける圧
力取出機構(2) A pressure extraction mechanism in a throttle flowmeter, wherein the ring according to claim 1 is configured to clamp an orifice plate.
に構成したことを特徴とする絞り流量計に於ける圧力取
出機構(3) A pressure extraction mechanism in a throttle flowmeter, characterized in that the ring of claim 1 is constructed integrally with an orifice plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10242390A JPH041525A (en) | 1990-04-18 | 1990-04-18 | Pressure takeout mechanism of orifice flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10242390A JPH041525A (en) | 1990-04-18 | 1990-04-18 | Pressure takeout mechanism of orifice flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH041525A true JPH041525A (en) | 1992-01-07 |
Family
ID=14327046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10242390A Pending JPH041525A (en) | 1990-04-18 | 1990-04-18 | Pressure takeout mechanism of orifice flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH041525A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006129588A1 (en) * | 2005-06-03 | 2006-12-07 | Surpass Industry Co., Ltd. | Orifice member, and differential pressure flow meter and flow regulating device using the orifice member |
| WO2015160551A1 (en) * | 2014-04-16 | 2015-10-22 | Dieterich Standard, Inc. | Flow meter |
| US10088240B2 (en) | 2014-09-16 | 2018-10-02 | Dieterich Standard, Inc. | Manifold for process variable transmitter with steam coupling |
| JP2019095459A (en) * | 2014-10-08 | 2019-06-20 | ディーテリヒ・スタンダード・インコーポレーテッド | Integrated orifice plate assembly |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56120918A (en) * | 1980-02-29 | 1981-09-22 | Toshiba Corp | Measuring device for flow rate in steam pipe |
-
1990
- 1990-04-18 JP JP10242390A patent/JPH041525A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56120918A (en) * | 1980-02-29 | 1981-09-22 | Toshiba Corp | Measuring device for flow rate in steam pipe |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006129588A1 (en) * | 2005-06-03 | 2006-12-07 | Surpass Industry Co., Ltd. | Orifice member, and differential pressure flow meter and flow regulating device using the orifice member |
| JP2006337234A (en) * | 2005-06-03 | 2006-12-14 | Surpass Kogyo Kk | Orifice member, differential pressure flowmeter using same, and discharge regulator |
| US7610817B2 (en) | 2005-06-03 | 2009-11-03 | Surpass Industry Co., Ltd. | Orifice member, and differential-pressure flow meter and flow-regulating apparatus using the same |
| KR101341161B1 (en) * | 2005-06-03 | 2013-12-13 | 사파스고교 가부시키가이샤 | Orifice member, and differential pressure flow meter and flow regulating device using the orifice member |
| WO2015160551A1 (en) * | 2014-04-16 | 2015-10-22 | Dieterich Standard, Inc. | Flow meter |
| CN105021236A (en) * | 2014-04-16 | 2015-11-04 | 迪特里奇标准公司 | Flow meter |
| US9459126B2 (en) | 2014-04-16 | 2016-10-04 | Dieterich Standard, Inc. | Flow meter |
| JP2017511486A (en) * | 2014-04-16 | 2017-04-20 | ディーテリヒ・スタンダード・インコーポレーテッド | Flowmeter |
| US10088240B2 (en) | 2014-09-16 | 2018-10-02 | Dieterich Standard, Inc. | Manifold for process variable transmitter with steam coupling |
| JP2019095459A (en) * | 2014-10-08 | 2019-06-20 | ディーテリヒ・スタンダード・インコーポレーテッド | Integrated orifice plate assembly |
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