JP3430112B2 - Flapper sight glass - Google Patents
Flapper sight glassInfo
- Publication number
- JP3430112B2 JP3430112B2 JP2000073428A JP2000073428A JP3430112B2 JP 3430112 B2 JP3430112 B2 JP 3430112B2 JP 2000073428 A JP2000073428 A JP 2000073428A JP 2000073428 A JP2000073428 A JP 2000073428A JP 3430112 B2 JP3430112 B2 JP 3430112B2
- Authority
- JP
- Japan
- Prior art keywords
- flapper
- sight glass
- hole
- detection chamber
- wall surface
- 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 - Lifetime
Links
Landscapes
- Measuring Volume Flow (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、液体や水蒸気等の
流体の流動状況を覗き窓から視認するために管路に付設
されるフラッパー式サイトグラスに関する。
【０００２】
【従来の技術】従来のフラッパー式サイトグラスの一例
を図４に示す。そのサイトグラスは、筐体ａに形成され
た入口孔ｂと出口孔ｃとの間に、流体の流線と直交する
方向に透明なガラス板ｅが装着された覗き窓を備えた検
流室ｄを設け、その検流室ｄの内壁にビスｆとナットｈ
で取り付けられた支持板ｉにフラッパーｊをピンｋによ
り揺動可能に支持すると共に、そのフラッパーｊをバネ
ｍで付勢して入口孔ｂを塞ぐようにした構造とされてい
る。
【０００３】
【発明が解決しようとする課題】上記した従来のサイト
グラスにおけるフラッパー部分の組付けは、検流室ｄの
内壁にパッキンｇを介してビスｆを通し、そのビスｆに
支持板ｉを嵌めてナットｈで固定した後、その支持板ｉ
にフラッパーｊとバネｍをピンｋにより取り付けるとい
う手順で行われていた。そのフラッパー部分の組み付け
は、狭い検流室内で手作業で行わなければならないこと
から、大変手間がかかって煩わしいという問題があっ
た。
【０００４】この発明の目的は、フラッパー部分の検流
室に対する組付けを容易としたフラッパー式サイトグラ
スを提供することにある。
【０００５】
【課題を解決するための手段】前記目的を達成するため
に請求項１に記載のフラッパー式サイトグラスは、流体
の流線と直交する方向の一方若しくは両方に透明なガラ
ス板を装着した覗き窓を備えた検流室が入口孔と出口孔
との間に形成されたサイトグラス本体と、該検流室の内
壁面に沿うように環状に形成されて流入孔と流出孔を備
えた支持部材の内方にフラッパーをピンにより揺動可能
に支持すると共に、該フラッパーをバネで付勢して前記
流入孔を塞ぐように構成したフラッパーユニットとを設
け、該フラッパーユニットはその流入孔を前記入口孔
に、流出孔を前記出口孔に合致するように前記サイトグ
ラス本体に組み付けられ、前記検流室を通過する流体に
より前記フラッパーを揺動させるように設けたことを特
徴とするものである。
【０００６】
【発明の作用及び効果】流体は入口孔から検流室に流入
し、フラッパーを押し上げて出口孔から流出する。この
ため、覗き窓からそのフラッパーの挙動により流動状況
を視認することができる。
【０００７】このフラッパー式サイトグラスによれば、
別途用意したフラッパーユニットをサイトグラス本体に
挿入することにより簡単に組付けを行うことができると
共に、多量生産に適する。なお、サイトグラス本体をそ
のまま利用し、フラッパーユニットの代わりに転流ボー
ルを封入した収納籠体を装着することにより、転流ボー
ルにより流動状況を視認する形式のサイトグラスに変更
することも可能である。
【０００８】
【発明の実施の形態】以下に、本発明の実施の形態例を
図面に基づいて説明する。図１はフラッパー式サイトグ
ラスの正面図、図２は要部を示す横断面図、図３はフラ
ッパーユニットの斜視図である。
【０００９】図１、図２に示すフラッパー式サイトグラ
スは、サイトグラス本体１にフラッパーユニット２０を
組付けた構造とされている。そのサイトグラス本体１の
筐体２には、流体の通過する検流室３の前後に入口孔４
ａを形成した管部４と、出口孔５ａを形成した管部５と
を設けている。その検流室３の入口孔４ａと連通する箇
所の壁面３ｂは平坦に設けられている。また、その筐体
２には、検流室３内を通過する流体の流線ｓと直交する
方向に窓孔６、７を形成する。一方の窓孔６には厚い透
明なガラス板９をパッキン８を介して嵌め、そのガラス
板９を上からリング形状の枠板１０で固定して覗き窓１
１を設ける。他方の窓孔７にも、パッキン１２を介して
嵌めた厚い透明なガラス板１３の上から覗き窓１５を設
けたリング形状の枠板１４をあてがう。そして、その枠
板１４に前記枠板１０を固定するボルト１６を通してナ
ット１７を螺合し、枠板１４を枠板１０と一緒に固定す
るように設ける。
【００１０】上記フラッパーユニット２０を図３に示
す。このフラッパーユニット２０の支持部材２１は、ス
テンレス製の平板を曲げ加工して上記検流室３の内壁面
３ａの形状に沿うように環状に形成して両端部が解放さ
れており、平坦部２１ａに流入孔２２を穿設すると共に
該流入孔２２に対向する位置に流出孔２３が穿設されて
いる。この支持部材２１の平坦部２１ａ上には、一対の
軸支片２４を内方に向けて一体に設ける。その軸支片２
４に通したピン２５には、フラッパー２６の一端部に一
体に形成された一対の短い筒部２６ａとバネ２７とを装
着する。そして、そのフラッパー２６はピン２５を中心
として揺動可能に支持されると共に、バネ２７で付勢さ
れて前記流入孔２２を塞ぐように設けられている。
【００１１】しかして、かかる構成になるフラッパーユ
ニット２０をサイトグラス本体１のガラス板１３を取り
付ける前に、その流入孔２２を入口孔４ａ側に対応させ
て検流室３に組み込むようにする。フラッパーユニット
２０の支持部材２１は両端部が解放されて少し弾力性を
有するので、検流室３に組付けたときに内壁面３ａに密
着してガタつきを生じることがない。
【００１２】以上、このフラッパー式サイトグラスによ
れば、フラッパー部分をユニット化したフラッパーユニ
ットをサイトグラス本体の検流室に挿入する構成とする
ことにより、全体の組付けを簡単に行うことができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flapper-type sight glass attached to a pipe for visually confirming the flow state of a fluid such as a liquid and water vapor from an observation window. FIG. 4 shows an example of a conventional flapper type sight glass. The sight glass has a galvanic chamber provided with a viewing window having a transparent glass plate e mounted in a direction orthogonal to a fluid streamline between an inlet hole b and an outlet hole c formed in a housing a. and a screw f and a nut h are provided on the inner wall of the detection chamber d.
A flapper j is swingably supported by a pin k on a support plate i attached by the above, and the flapper j is urged by a spring m so as to close the inlet hole b. [0003] In the above-mentioned conventional sight glass, the flapper portion is assembled by passing a screw f through an inner wall of a detection chamber d through a packing g, and a supporting plate i is passed through the screw f. After fixing it with the nut h, the support plate i
The flapper j and the spring m are attached by a pin k. Since the flapper portion must be manually assembled in a narrow detection chamber, there has been a problem that it is very troublesome and troublesome. An object of the present invention is to provide a flapper-type sight glass which facilitates assembling a flapper portion to a detection chamber. [0005] In order to achieve the above object, a flapper type sight glass according to claim 1 is provided with a transparent glass plate in one or both directions perpendicular to a fluid stream line. A sight glass chamber provided with a viewing window is provided with a sight glass body formed between an inlet hole and an outlet hole, and an inflow hole and an outflow hole formed annularly along the inner wall surface of the detection chamber. A flapper unit configured to swingably support the flapper by a pin inside the support member and to bias the flapper with a spring to close the inflow hole, wherein the flapper unit is provided with the inflow hole. The outlet port is fitted to the sight glass body such that the outlet port matches the outlet port, and the flapper is oscillated by a fluid passing through the galvanic chamber. Things. [0006] The fluid flows into the detection chamber from the inlet hole, pushes up the flapper and flows out from the outlet hole. For this reason, the flow state can be visually recognized from the viewing window by the behavior of the flapper. According to this flapper type sight glass,
Inserting a separately prepared flapper unit into the sight glass body enables easy assembly and is suitable for mass production. In addition, by using the sight glass body as it is and installing a storage basket body in which the commutation ball is sealed instead of the flapper unit, it is also possible to change to a sight glass in which the flow situation can be visually recognized by the commutation ball is there. [0008] Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a flapper type sight glass, FIG. 2 is a cross-sectional view showing a main part, and FIG. 3 is a perspective view of a flapper unit. The flapper type sight glass shown in FIGS. 1 and 2 has a structure in which a flapper unit 20 is attached to a sight glass main body 1. The housing 2 of the sight glass body 1 has an inlet hole 4 before and after the galvanic chamber 3 through which the fluid passes.
a, and a tube portion 5 having an outlet hole 5a. The wall surface 3b at a location communicating with the inlet hole 4a of the detection chamber 3 is provided flat. In addition, window holes 6 and 7 are formed in the housing 2 in a direction orthogonal to a streamline s of the fluid passing through the detection chamber 3. A thick transparent glass plate 9 is fitted into one window hole 6 via a packing 8, and the glass plate 9 is fixed from above with a ring-shaped frame plate 10 and the viewing window 1 is fixed.
1 is provided. A ring-shaped frame plate 14 having a viewing window 15 is applied to the other window hole 7 from above a thick transparent glass plate 13 fitted through a packing 12. A nut 17 is screwed into the frame plate 14 through a bolt 16 for fixing the frame plate 10, and the frame plate 14 is provided so as to be fixed together with the frame plate 10. The flapper unit 20 is shown in FIG. The support member 21 of the flapper unit 20 is formed by bending a flat plate made of stainless steel to have an annular shape so as to conform to the shape of the inner wall surface 3a of the galvanic chamber 3, and has open ends at both ends. An inflow hole 22 is formed at a position facing the inflow hole 22. On the flat portion 21a of the support member 21, a pair of shaft support pieces 24 are integrally provided inward. The shaft support 2
A pair of short cylindrical portions 26 a integrally formed at one end of the flapper 26 and a spring 27 are attached to the pin 25 that has passed through 4. The flapper 26 is swingably supported about the pin 25 and is provided so as to be urged by a spring 27 to close the inflow hole 22. Before the flapper unit 20 having such a configuration is attached to the glass plate 13 of the sight glass main body 1, the inflow holes 22 thereof are incorporated into the galvanic chamber 3 so as to correspond to the inlet holes 4a. Since the support member 21 of the flapper unit 20 has both ends released and has a little elasticity, the support member 21 does not loosely adhere to the inner wall surface 3a when assembled to the detection chamber 3. As described above, according to this flapper-type sight glass, the entire flapper unit can be easily assembled by inserting the flapper unit into the detection chamber of the sight glass body. .
【図面の簡単な説明】
【図１】フラッパー式サイトグラスの正面図
【図２】要部を示す横断面図
【図３】フラッパーユニットの斜視図
【図４】従来のフラッパー式サイトグラスの縦断正面図
【符号の説明】
１→サイトグラス本体
２→筐体 ３→検流室 ３ａ→内壁面 ４ａ→入口孔
５ａ→出口孔
９、１３→ガラス板 １１、１５→覗き窓
２０→フラッパーユニット
２１→支持部材 ２２→流入孔 ２３→流出孔
２５→ピン ２６→フラッパー ２７→バネ
ｓ→流線BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a flapper type sight glass. FIG. 2 is a cross-sectional view showing a main part. FIG. 3 is a perspective view of a flapper unit. FIG. Front view [Explanation of reference numerals] 1 → Sight glass body 2 → Case 3 → Gas detection chamber 3a → Inner wall surface 4a → Inlet hole
5a → outlet holes 9, 13 → glass plate 11, 15 → viewing window 20 → flapper unit 21 → support member 22 → inlet hole 23 → outlet hole 25 → pin 26 → flapper 27 → springs → streamline
Claims (1)
は両方に透明なガラス板を装着した覗き窓を備えた検流
室が入口孔と出口孔との間に形成されたサイトグラス本
体と、該検流室の内壁面に沿うように環状に形成されて
流入孔と流出孔を備えた支持部材の内方にフラッパーを
ピンにより揺動可能に支持すると共に、該フラッパーを
バネで付勢して前記流入孔を塞ぐように構成したフラッ
パーユニットとを設け、該フラッパーユニットはその流
入孔を前記入口孔に、流出孔を前記出口孔に合致するよ
うに前記サイトグラス本体に組み付けられ、前記検流室
を通過する流体により前記フラッパーを揺動させるよう
に設けたことを特徴とするフラッパー式サイトグラス。(57) [Claim 1] A galvanic chamber provided with a viewing window equipped with a transparent glass plate in one or both directions orthogonal to the fluid stream lines is provided with an inlet hole and an outlet hole. A flapper is swingably supported by a pin inside a support member having an inflow hole and an outflow hole, which is formed in a ring shape along the inner wall surface of the sight glass body formed therebetween and the inner wall surface of the detection chamber. And a flapper unit configured to close the inflow hole by urging the flapper with a spring so that the inflow hole matches the inlet hole and the outflow hole matches the outlet hole. A flapper-type sight glass, which is mounted on the sight glass main body and is provided so as to swing the flapper by a fluid passing through the detection chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000073428A JP3430112B2 (en) | 2000-03-16 | 2000-03-16 | Flapper sight glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000073428A JP3430112B2 (en) | 2000-03-16 | 2000-03-16 | Flapper sight glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001263572A JP2001263572A (en) | 2001-09-26 |
| JP3430112B2 true JP3430112B2 (en) | 2003-07-28 |
Family
ID=18591671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000073428A Expired - Lifetime JP3430112B2 (en) | 2000-03-16 | 2000-03-16 | Flapper sight glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3430112B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0609405D0 (en) * | 2006-05-12 | 2006-06-21 | Bpr Medical Ltd | Gas flow indicator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3197852B2 (en) | 1997-10-13 | 2001-08-13 | 株式会社ヨシタケ | Galvanometer casing, ball type galvanometer and flapper type galvanometer using the same |
-
2000
- 2000-03-16 JP JP2000073428A patent/JP3430112B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3197852B2 (en) | 1997-10-13 | 2001-08-13 | 株式会社ヨシタケ | Galvanometer casing, ball type galvanometer and flapper type galvanometer using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001263572A (en) | 2001-09-26 |
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