JP3079213B2 - Fluid equipment - Google Patents
Fluid equipmentInfo
- Publication number
- JP3079213B2 JP3079213B2 JP03357754A JP35775491A JP3079213B2 JP 3079213 B2 JP3079213 B2 JP 3079213B2 JP 03357754 A JP03357754 A JP 03357754A JP 35775491 A JP35775491 A JP 35775491A JP 3079213 B2 JP3079213 B2 JP 3079213B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure gauge
- fluid
- flow path
- ball
- pressure
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】この発明は流体機器に係り、その
目的は配管に使用されている圧力計を交換したり、取り
外したりする際に、内部の流体を漏洩させることなくし
かも簡便にその作業を行なうことができる流体機器の提
供にある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid device, and its purpose is to easily and easily replace or remove a pressure gauge used for piping without causing leakage of internal fluid. The present invention provides a fluid device capable of performing the above.
【０００２】[0002]
【従来の技術】化学プラントにおいては、原料や燃料の
流量、圧力の大きさ、液面の高さ、温度などを測定し、
常に一定の値に制御するため各箇所に適切な計測器と制
御器が設けられている。この化学プラントにおける流
量、圧力等の調節はすべて流体の流量によって調節され
ており、その一例を挙げると、図８に示すようなブルド
ン管式圧力計(A)や図９に示すダイアフラム式圧力計(G)
が例示される。ブルドン管式圧力計(A) は、図示する
ようにＣ型の管(c) で、断面は平面又は楕円形を呈して
おり、固定端(b) に圧力が加えられると、自由端(d) は
その圧力に比例して直線的に動き、拡大機構(e) を通じ
て指針(f) が動かされ、圧力を指示する構造とされてい
る。2. Description of the Related Art In a chemical plant, a flow rate, a pressure level, a liquid level, a temperature, etc. of a raw material or a fuel are measured.
Appropriate measuring instruments and controllers are provided at each location to constantly control to a constant value. The adjustment of the flow rate, pressure, etc. in this chemical plant is all controlled by the flow rate of the fluid. For example, a Bourdon tube pressure gauge (A) as shown in FIG. 8 and a diaphragm pressure gauge as shown in FIG. (G)
Is exemplified. The Bourdon tube pressure gauge (A) is a C-shaped tube (c) as shown in the drawing, and has a flat or elliptical cross section. When pressure is applied to the fixed end (b), the free end (d) ) Moves linearly in proportion to the pressure, and the pointer (f) is moved through the expansion mechanism (e) to indicate the pressure.
【０００３】このような、ブルドン管式圧力計(A) をは
じめとする圧力計を定期・不定期で交換する場合、或い
は圧力計を一時的に取り外すことが必要になった場合に
は、その配管内を流れる流体の圧力を降下させる必要が
あった。この配管内の流体の圧力を降下させる手段とし
ては、配管ライン全体の設備を停止させ、配管内の流体
を抜き取ったり、或いは圧力計に圧力計元弁を設置し、
この圧力計元弁を閉鎖して、圧力計と圧力計元弁との間
隙の流体を排出させて行う手段等が用いられていた。[0003] When the pressure gauge such as the Bourdon tube pressure gauge (A) is replaced regularly or irregularly, or when it becomes necessary to temporarily remove the pressure gauge, the It was necessary to reduce the pressure of the fluid flowing in the piping. As means for lowering the pressure of the fluid in the pipe, the equipment of the entire pipe line is stopped, and the fluid in the pipe is extracted, or a pressure gauge main valve is installed in the pressure gauge,
Means for closing the pressure gauge main valve and discharging the fluid in the gap between the pressure gauge and the pressure gauge main valve have been used.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記し
た配管ライン全体の設備を停止させ、配管内の流体を抜
き取る作業には大変な労力を要し、特に大規模な石油化
学プラントにおいては実用的ではなかった。また、圧力
計に圧力計元弁を設置する手段も、前記配管ライン全体
を停止させる手段に比べると作業性のロスは減少するも
のの、個々の圧力計に元弁を取り付けることには多大な
手間と煩雑性が生じるとともに、配管そのものが複雑に
なる、或いは取り付けた圧力計元弁のメンテナンス作業
等が要されるなど容易に実施できる手段ではなかった。However, the above-mentioned operation of stopping the entire piping line and extracting the fluid from the piping requires a great deal of labor, and is not practical especially in a large-scale petrochemical plant. Did not. Means for installing a pressure gauge main valve in the pressure gauge also reduces workability loss as compared with the means for stopping the entire piping line, but requires a great deal of time to attach the main valve to each pressure gauge. This is not a means that can be easily implemented, for example, because the piping itself becomes complicated or maintenance work for the attached pressure gauge main valve is required.
【０００５】[0005]
【課題を解決するための手段】この発明では、流体の流
路と圧力計との間にアダプタが介在されてなる流体機器
であって、このアダプタは略筒状で内縁上部には狭絞部
が形成されるとともに内縁下部には突片が形成されてな
り、これら狭絞部と突片との空間内には前記狭絞部およ
び突片によって形成される流路の径より径大のボールが
配されて、流路からの所定の圧力によって移動されて前
記狭絞部を閉塞するとともにこのボールの上部には指示
棒が取り付けられてなることを特徴とする流体機器を提
供することにより上記従来の課題を悉く解消する。According to the present invention, there is provided a fluid device in which an adapter is interposed between a fluid flow path and a pressure gauge. Is formed, and a protruding piece is formed at the lower portion of the inner edge. A ball having a diameter larger than the diameter of the flow path formed by the narrowing portion and the protruding piece is provided in the space between the narrowing portion and the protruding piece. The fluid device is provided by being moved by a predetermined pressure from the flow path to close the narrowed portion and to have an indicator rod attached to the upper part of the ball. Eliminate all conventional problems.
【０００６】[0006]
【作用】化学プラント等の配管に使用されている圧力計
を交換する際において、圧力計を取り外すと、この圧力
計と流体の流路との間に介在されているアダプタの空間
内に配されているボールが上方へ移動し、アダプタ内の
空隙を閉塞して外部への流体の漏洩を防止させる。従っ
て大規模な設備停止を行ったり、圧力計元弁を設置しな
くても、流体の漏洩を生じさせることなく容易に圧力計
が交換できるとともに、新しい圧力計を取り付けると、
アダプタ内の空隙を閉塞させていたボールが指示棒を介
して元の下方へ移動されるので、容易にしかも効率良く
圧力計を交換することができる。When replacing a pressure gauge used for piping of a chemical plant or the like, when the pressure gauge is removed, the pressure gauge is disposed in a space of an adapter interposed between the pressure gauge and a fluid flow path. The moving ball moves upward to close the gap in the adapter and prevent leakage of fluid to the outside. Therefore, without having to shut down the equipment on a large scale or installing a pressure gauge main valve, the pressure gauge can be easily replaced without causing leakage of the fluid, and when a new pressure gauge is installed,
Since the ball, which has closed the gap in the adapter, is moved downward through the indicator rod, the pressure gauge can be replaced easily and efficiently.
【０００７】[0007]
【実施例】以下、この発明に係る流体機器の実施例を図
面に基づき説明する。図１にはこの発明に係る流体機器
(1) の一実施例を示す部分断面模式図であり、図中(2)
はブルドン管式圧力計、(21)は前記圧力計の取付部、
(3) はアダプタ、(4) はボールで(41)は指示棒である。
(5) はガス等が流通する流路であって、この流路(5) の
途中から分岐した部分には既設アダプタ(6) が流路(5)
と圧力計(2) とを連接させるために取付けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a fluid device according to the present invention will be described below with reference to the drawings. FIG. 1 shows a fluid device according to the present invention.
(1) is a partial schematic cross-sectional view showing one embodiment, (2) in the figure
Is a Bourdon tube pressure gauge, (21) is a mounting part of the pressure gauge,
(3) is an adapter, (4) is a ball, and (41) is a pointer.
(5) is a flow path through which gas and the like circulate, and an existing adapter (6) is connected to the flow path (5) at a portion branched from the middle of the flow path (5).
And a pressure gauge (2).
【０００８】図示するように、この発明においては、流
体の流路(5) と圧力計(2) との間には既設アダプタ(6)
を介してアダプタ(3) が介在されている。このアダプタ
(3) は、上部(3a)が下部(3b)より径大の略円筒状であっ
て、内縁上部には狭絞部(31)が形成されて、流路(5) が
狭くされているるとともに内縁下部には平面視Ｃ形の突
片(32)が形成されている。これら狭絞部(31)と突片(32)
との空間内には前記狭絞部(31)および突片(32)によって
形成される流路(5) の径より径大のボール(4) が配され
ている。また、このボール(4) 上部には指示棒(41)が取
り付けられている。As shown in the drawing, in the present invention, an existing adapter (6) is provided between a fluid flow path (5) and a pressure gauge (2).
The adapter (3) is interposed via the. This adapter
In (3), the upper part (3a) has a substantially cylindrical shape with a larger diameter than the lower part (3b), and a narrow throttle part (31) is formed at the upper part of the inner edge to narrow the flow path (5). In addition, a protruding piece (32) having a C shape in a plan view is formed at a lower portion of the inner edge. These narrow parts (31) and protruding pieces (32)
A ball (4) having a diameter larger than the diameter of the flow path (5) formed by the narrowed portion (31) and the projecting piece (32) is arranged in the space. An indicator rod (41) is attached to the upper part of the ball (4).
【０００９】このように構成からなるこの発明に係る流
体機器(1) では、流路(5) を流れる流体の一部はアダプ
タ(3) を経て圧力計(2) 内の流体経路に流入し、前記流
路(5) 内の圧力が測定される。この場合には、図２に示
すように、アダプタ内縁上部に形成されている狭絞部(3
1)と突片(32)との間の空間(S) が所定以下の圧力である
から、前記空間(S) 内に配されているボール(4) は流路
(5) からの流体圧を受けないため、その自重により突片
(32)上に載置状態となっている。この際、平面視Ｃ形の
突片(32)の開口部(32a)から流体が流入され、アダプタ
(3)を経て圧力計(2) へと流体が流入される。In the fluid device (1) according to the present invention having such a configuration, a part of the fluid flowing through the flow path (5) flows into the fluid path in the pressure gauge (2) via the adapter (3). Then, the pressure in the flow path (5) is measured. In this case, as shown in FIG. 2, the narrowed portion (3
Since the space (S) between the projection (1) and the protruding piece (32) has a pressure equal to or less than a predetermined value, the ball (4) disposed in the space (S) has a flow path.
(5) Because it does not receive the fluid pressure from
(32) It is placed on top. At this time, fluid flows in from the opening (32a) of the protruding piece (32) having a C shape in plan view,
The fluid flows into the pressure gauge (2) via (3).
【００１０】ところが、圧力計(2) を交換するため、こ
の圧力計(2) を取り外すと、空間(S) 内の流速が増し、
図３に示すように、突片(32)上に載置されていたボール
(4)がこの流体圧によって上方へ移動される。上方へ移
動されたボール(4)はアダプタ(3) の内周縁上部の狭絞
部(31)に突接して流路(5) を閉塞する。従って、圧力計
(2) 外部への流体の漏洩が停止されるとともに、この状
態で容易に圧力計(2)を交換することができる。However, if the pressure gauge (2) is removed to replace the pressure gauge (2), the flow velocity in the space (S) increases,
As shown in FIG. 3, the ball placed on the protruding piece (32)
(4) is moved upward by this fluid pressure. The ball (4) that has been moved upward comes into contact with the narrowed portion (31) at the upper part of the inner peripheral edge of the adapter (3) and closes the flow path (5). Therefore, the pressure gauge
(2) The leakage of the fluid to the outside is stopped, and the pressure gauge (2) can be easily replaced in this state.
【００１１】圧力計(2) の交換終了後、新しい圧力計
(2) をアダプタ(3) 内へ取り付けると、この圧力計(2)
の取付部(21)底部(21a) が図４に示すようにボール(4)
の指示棒(41)先端部(41a) と当接し、取付部(21)の下方
向への付勢により、また、空間(S) 内での流体の流速が
通常状態となるため、ボール(4) は狭絞部から離されて
下方向へ移動し、その自重により再び突片(32)上へ載置
される。After the replacement of the pressure gauge (2), a new pressure gauge
When (2) is installed in the adapter (3), this pressure gauge (2)
The bottom (21a) of the mounting part (21) of the ball (4) as shown in FIG.
When the ball (41) comes into contact with the tip (41a) of the indicator rod (41) and is urged downward by the mounting part (21), and the flow velocity of the fluid in the space (S) becomes normal, the ball ( 4) is separated from the narrowed portion and moves downward, and is placed again on the protruding piece (32) by its own weight.
【００１２】図５はこの発明に係る流体機器(1) の変更
例を示す部分断面模式図である。この図示する変更例で
は、流体の流路(5) に直接アダプタ(3) が取り付けられ
ている。通常、圧力計(2) によって流路(5) 内の流体圧
を測定している状態では、図６に示すようにボール(4)
は、圧力計(2) 取付部(21)の底部空間(21a) 内に取り付
けられているメッシュ(21b) によって指示棒(41)を介し
て突片(32)上に押圧、固定されている。FIG. 5 is a schematic partial sectional view showing a modification of the fluid device (1) according to the present invention. In the illustrated modification, the adapter (3) is directly attached to the fluid flow path (5). Normally, when the fluid pressure in the flow path (5) is measured by the pressure gauge (2), as shown in FIG.
Is pressed and fixed on the protruding piece (32) via the indicator rod (41) by the mesh (21b) mounted in the bottom space (21a) of the pressure gauge (2) mounting portion (21). .
【００１３】ところが、圧力計(2) を交換するため、こ
の圧力計(2) を取り外すと、ボール(4) はメッシュ(21
b) による押圧が解除されるため、また図７に示すよう
に突片(32)上に設けられているバネ(32b) による上方向
への付勢により勢いよく上方向へ移動し、狭絞部(31)に
突接して流路(5) を閉塞する。従って、圧力計(2) 外部
への流体の漏洩が停止されるとともに、この状態で容易
に圧力計(2)を交換することができる。圧力計(2) の交
換終了後は、新しい圧力計(2) をアダプタ(3) 内へ取り
付けると、メッシュ(21b) によって指示棒(41)が下方向
へと押圧されるため再び元の突片(32)上へ移動され、固
定される。However, when the pressure gauge (2) is removed in order to replace the pressure gauge (2), the ball (4) becomes mesh (21).
b) is released, and as shown in FIG. 7, the spring is moved upward by a spring (32b) provided on the protruding piece (32). The flow path (5) is closed by projecting against the part (31). Therefore, leakage of the fluid to the outside of the pressure gauge (2) is stopped, and the pressure gauge (2) can be easily replaced in this state. After replacing the pressure gauge (2), when the new pressure gauge (2) is installed in the adapter (3), the indicator rod (41) is pressed downward by the mesh (21b), and the original projection is returned. It is moved onto the piece (32) and fixed.
【００１４】このように、突片(32)から狭絞部(31)まで
の距離が長い場合には突片(32)上にバネ(32b) を設ける
ことによって、ボール(4) の上方向への移動が瞬時に行
え、狭絞部(31)の閉塞までの流体の漏洩ロスが少なくて
済むため非常に効率良く圧力計(2) の交換が行なえる。
また、圧力計(2) 取付部(21)の流路(21c) の径が指示棒
(41)先端部の径(41b)よりも大きい場合には、取付部(2
1)底部空間(21a) 内に金網等のメッシュ(21b)を設ける
ことによって、指示棒(41)をこの取付部(21)の流路(21
c) 内に侵入させることなく、容易に突片(32)上へ押
圧、固定させることができる。As described above, when the distance from the protruding piece (32) to the narrowed portion (31) is long, the spring (32b) is provided on the protruding piece (32), so that the upward direction of the ball (4) can be improved. The pressure gauge (2) can be exchanged very efficiently because the fluid can be instantaneously moved and the leakage loss of the fluid until the narrowing portion (31) is closed can be reduced.
The diameter of the flow path (21c) of the pressure gauge (2) mounting part (21) is
(41) If the diameter is larger than the tip diameter (41b),
1) By providing a mesh (21b) such as a wire mesh in the bottom space (21a), the indicator rod (41) can be connected to the flow path (21
c) It can be easily pressed and fixed onto the protruding piece (32) without invading the inside.
【００１６】以上述べたこの発明に係る流体機器(1)
は、図８に示すブルドン管式圧力計(A) 以外にも、図９
に示すようなダイアフラム式圧力計等種々の圧力計にも
適用できる。The above-described fluid device (1) according to the present invention.
Fig. 9 shows the Bourdon tube pressure gauge (A) shown in Fig. 8 as well as Fig. 9
The present invention can be applied to various pressure gauges such as a diaphragm pressure gauge as shown in FIG.
【００１７】[0017]
【発明の効果】以上詳述した如く、この発明は流体の流
路と圧力計との間にアダプタが介在されてなる流体機器
であって、このアダプタは略筒状で内縁上部には狭絞部
が形成されるとともに内縁下部には突片が形成されてな
り、これら狭絞部と突片との空間内には前記狭絞部およ
び突片によって形成される流路の径より径大のボールが
配されて、流路からの所定の圧力によって移動されて前
記狭絞部を閉塞するとともにこのボールの上部には指示
棒が取り付けられてなることを特徴とする流体機器であ
るから、化学プラントの配管に使用されている圧力計を
交換する際には、配管ライン全体を停止させなくとも、
配管内の流体の外部への漏洩を起こさず、簡便にしかも
効率良く圧力計の交換、取り外しが行なえるという優れ
た効果を奏する。As described in detail above, the present invention relates to a fluid device in which an adapter is interposed between a fluid flow path and a pressure gauge. A part is formed and a protruding piece is formed at the lower part of the inner edge, and a space larger than the diameter of the flow path formed by the narrowing part and the protruding piece is formed in the space between the narrowing part and the protruding piece. A fluid device is provided with a ball, which is moved by a predetermined pressure from the flow path to close the narrowed portion, and an indicator rod is attached to an upper portion of the ball. When replacing the pressure gauge used for plant piping, you do not need to stop the entire piping line.
There is an excellent effect that the pressure gauge can be easily and efficiently replaced and removed without causing leakage of the fluid in the pipe to the outside.
【図１】この発明に係る流体機器の一実施例を示す部分
断面模式図である。FIG. 1 is a schematic partial sectional view showing an embodiment of a fluid device according to the present invention.
【図２】同上、流路内の圧力測定時を示す断面図であ
る。FIG. 2 is a cross-sectional view showing the same during pressure measurement in a flow channel.
【図３】同上、圧力計を取り外した状態を示す断面図で
ある。FIG. 3 is a cross-sectional view showing a state in which the pressure gauge is removed.
【図４】同上、新規な圧力計を取り付けた状態を示す断
面図である。FIG. 4 is a cross-sectional view showing a state where a novel pressure gauge is attached.
【図５】この発明に係る流体機器の変更例を示す部分断
面模式図である。FIG. 5 is a schematic partial sectional view showing a modification of the fluid device according to the present invention.
【図６】同上、流路内の圧力測定時を示す断面図であ
る。FIG. 6 is a cross-sectional view showing the same during pressure measurement in the flow channel.
【図７】同上、圧力計を取り外した状態を示す断面図で
ある。FIG. 7 is a cross-sectional view showing a state in which the pressure gauge is removed.
【図８】ブルドン管式圧力計を示す模式図である。FIG. 8 is a schematic view showing a Bourdon tube pressure gauge.
【図９】ダイアフラム式圧力計を示す模式図である。FIG. 9 is a schematic diagram showing a diaphragm type pressure gauge.
１ 流体機器 ２ 圧力計 ３ アダプタ 31 狭絞部 32 突片 ４ ボール 41 指示棒 ５ 流路 DESCRIPTION OF SYMBOLS 1 Fluid apparatus 2 Pressure gauge 3 Adapter 31 Narrow narrow part 32 Protrusion piece 4 Ball 41 Indicator rod 5 Flow path
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−203943（ＪＰ，Ａ) 特開 昭62−36527（ＪＰ，Ａ) 実開 昭60−109034（ＪＰ，Ｕ) 実開 昭63−22947（ＪＰ，Ｕ) 実開 平１−112419（ＪＰ，Ｕ) 実開 昭59−12033（ＪＰ，Ｕ) 実開 昭56−66840（ＪＰ，Ｕ) 実公 昭48−21890（ＪＰ，Ｙ１) 実公 昭50−2852（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) G01L 19/00 101 F16K 15/04 F16L 55/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-203943 (JP, A) JP-A-62-236527 (JP, A) JP-A-60-1009034 (JP, U) JP-A-63 22947 (JP, U) JP-A 1-112419 (JP, U) JP-A 59-12033 (JP, U) JP-A 56-66840 (JP, U) JP-A 48-21890 (JP, Y1) 50-2852 (JP, Y1) (58) Fields investigated (Int. Cl. 7 , DB name) G01L 19/00 101 F16K 15/04 F16L 55/00
Claims (2)
介在されてなる流体機器であって、このアダプタは略筒
状で内縁上部には狭絞部が形成されるとともに内縁下部
には突片が形成されてなり、これら狭絞部と突片との空
間内には前記狭絞部および突片によって形成される流路
の径より径大のボールが配されて、流路からの所定の圧
力によって移動されて前記狭絞部を閉塞するとともにこ
のボールの上部には指示棒が取り付けられてなることを
特徴とする流体機器。1. A fluid device having an adapter interposed between a fluid flow path and a pressure gauge, wherein the adapter has a substantially cylindrical shape, a narrowed portion is formed at an upper portion of an inner edge, and a narrowed portion is formed at a lower portion of the inner edge. Is formed with a protruding piece, and a ball having a diameter larger than the diameter of the flow path formed by the narrowed constricted portion and the protruded piece is arranged in the space between the narrowed portion and the protruded piece. A fluid device characterized by being moved by a predetermined pressure to close the narrowed portion and having an indicator rod attached to an upper portion of the ball.
ことを特徴とする請求項１に記載の流体機器。2. The fluid device according to claim 1, wherein the means for applying the predetermined pressure is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03357754A JP3079213B2 (en) | 1991-12-25 | 1991-12-25 | Fluid equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03357754A JP3079213B2 (en) | 1991-12-25 | 1991-12-25 | Fluid equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05172678A JPH05172678A (en) | 1993-07-09 |
| JP3079213B2 true JP3079213B2 (en) | 2000-08-21 |
Family
ID=18455757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03357754A Expired - Fee Related JP3079213B2 (en) | 1991-12-25 | 1991-12-25 | Fluid equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3079213B2 (en) |
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|---|---|---|---|---|
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| CN205995666U (en) | 2016-08-19 | 2017-03-08 | 萨塔有限两合公司 | Spray gun and its trigger |
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-
1991
- 1991-12-25 JP JP03357754A patent/JP3079213B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05172678A (en) | 1993-07-09 |
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