JPS5913689B2 - Instrument pressure pulsation preventer - Google Patents
Instrument pressure pulsation preventerInfo
- Publication number
- JPS5913689B2 JPS5913689B2 JP9440976A JP9440976A JPS5913689B2 JP S5913689 B2 JPS5913689 B2 JP S5913689B2 JP 9440976 A JP9440976 A JP 9440976A JP 9440976 A JP9440976 A JP 9440976A JP S5913689 B2 JPS5913689 B2 JP S5913689B2
- Authority
- JP
- Japan
- Prior art keywords
- case
- core body
- hole
- pressure
- pressure pulsation
- 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)
- Pipe Accessories (AREA)
Description
【発明の詳細な説明】
この発明は圧力計、流量計等の計器の前に装置し、圧力
計、流量計等の計器に直接被計測圧力媒体の脈動が至ら
ないように防止する作用をする計器用圧力脈動防止器に
関する。[Detailed Description of the Invention] This invention is installed in front of instruments such as pressure gauges and flow meters, and functions to prevent pulsation of the pressure medium to be measured from directly reaching the instruments such as pressure gauges and flow meters. Regarding a pressure pulsation preventer for instruments.
一般に、ポンプの吐出側等によく発生する圧力脈動は、
それを測定しようとする計器の寿命を著しく縮めたり、
誤動作を起こしたりして測定そのものを不可能にする場
合が多い。In general, pressure pulsations that often occur on the discharge side of a pump are
It may significantly shorten the life of the instrument used to measure it.
This often causes malfunctions and makes the measurement itself impossible.
そのため、圧力計等の計器の波計測圧接続口までの計装
用１次配管部に脈動防止器を装置することが必要である
。Therefore, it is necessary to install a pulsation preventer in the primary piping for instrumentation up to the wave measurement pressure connection port of a pressure gauge or other gauge.
しかし、従来の計器用圧力脈動防止器は、ニードル弁の
絞り効果を利用したもの、多孔性の焼結金属板を透過さ
せて脈動を減衰させるもの、雄ネジと雌ネジの間隙を通
過させて減衰させるスクリュ一式のもの等があるが、こ
れ等は絞り部分が一個所又は焼結金属板が一板のもので
あり、充分な脈動防止効果が得がたい欠点と、効果を高
める為に通路を絞り過ぎると、閉塞事故を起す等の欠点
があった。However, conventional pressure pulsation preventers for instruments use the throttling effect of a needle valve, those that transmit through a porous sintered metal plate to attenuate pulsations, and those that transmit through a gap between a male screw and a female screw. There is a set of damping screws, but these have a single throttle part or a single sintered metal plate, which makes it difficult to obtain a sufficient pulsation prevention effect. If it is too long, there are drawbacks such as a blockage accident.
本発明はこれ等の欠点を除くことを目的とするものであ
る。The present invention aims to eliminate these drawbacks.
次にこの発明の構成を実施例図面に基づいて説明すると
、計器用脈動防止器は、ケース１と蓋ケース２と、中子
体３とから構成される。Next, the structure of the present invention will be explained based on the drawings of the embodiment. The pulsation preventer for an instrument is composed of a case 1, a lid case 2, and a core body 3.
ケース１は、一端を開口した中空円筒部１３を形成し、
該中空円筒部１３に連通する縦孔１２をほぼ中心に貫設
して接続口を形成し、かつ中空円筒部１３の開口端部外
周に嵌合雄ネジ１４を螺設し、その他端部である縦孔１
２の外周に接続雄ネジ８を螺設して成る。The case 1 forms a hollow cylindrical part 13 with one end open,
A vertical hole 12 that communicates with the hollow cylindrical portion 13 is penetrated approximately at the center to form a connection port, and a fitting male screw 14 is screwed on the outer periphery of the open end of the hollow cylindrical portion 13, and a male screw 14 is screwed at the other end. A vertical hole 1
A connecting male thread 8 is screwed onto the outer periphery of 2.
蓋ケース２は一端にケース１の嵌合雄ネジ１４と螺合す
る嵌合雌ネジ１５を螺設し、他端に接続雌ネジ１を螺設
し、該嵌合雌ネジ１５と接続雌ネジ７０間に蓋体１６を
設け、該蓋体１６のほぼ中心に通孔１１を穿設して成る
。The lid case 2 has a fitting female screw 15 screwed into one end thereof, which screws into the fitting male screw 14 of the case 1, and a connecting female screw 1 screwed into the other end. A lid body 16 is provided between the holes 70 and a through hole 11 is bored approximately in the center of the lid body 16.
中子体３は中空円筒部１３に着脱自在に嵌装しうるもの
であり、はぼ円柱形に形成され、その両端面と円周面に
円輪状に突設する絞り突縁４，４′と輪状凹部５．５′
を交互に多数積層してその外壁を形成する。The core body 3 can be removably fitted into the hollow cylindrical part 13, and is formed into a substantially cylindrical shape, and has aperture ridges 4, 4' protruding in an annular shape on both end faces and the circumferential face thereof. and annular recess 5.5'
A large number of these are alternately laminated to form the outer wall.
絞り突縁４と輪状凹部５とによって凹凸が多数積層して
形成される中子体３の外壁と中空円筒部１３の内壁とに
よって広狭が交互に連続する通路１７が構成される。The outer wall of the core body 3, which is formed by stacking a large number of concavities and convexities formed by the aperture rim 4 and the annular recess 5, and the inner wall of the hollow cylindrical portion 13 constitute a passage 17 in which wide and narrow sections are alternately continuous.
該通路１１は、絞り突縁４の外径と中空円筒部１３の内
径の微少な差（通常１／１０ｍｍ単位）及び中子体３０
両端に突設して成る円輪状絞り突縁４匍の長さと中空円
筒部１３底面と蓋体１６との間で形成される中空室の長
さとの微少な差（通常１／１０ｍｍ単位）によって構成
される。The passage 11 is formed by a slight difference (usually in units of 1/10 mm) between the outer diameter of the throttle flange 4 and the inner diameter of the hollow cylindrical portion 13 and the core body 30.
Due to the minute difference (usually in units of 1/10 mm) between the length of the four circular aperture ridges protruding from both ends and the length of the hollow chamber formed between the bottom surface of the hollow cylindrical portion 13 and the lid body 16. configured.
この差は非常に小さいため通路１７を一定間隔に保持す
るものは不必要である。This difference is so small that anything keeping the passages 17 at regular intervals is unnecessary.
９は雌ネジ路であり、中子体３０両端面のほぼ中央部に
各々開口し中子体３の内部に向って掘設し、その内周壁
に雌ネジを螺設してなる。Reference numeral 9 denotes a female thread passage, which is opened at approximately the center of both end faces of the core body 30 and dug toward the inside of the core body 3, and a female thread is screwed into the inner circumferential wall thereof.
１０は袋状チャンバーであり、各々の雌ネジ路９の先端
に、雌ネジ路９よりやや径の広く掘設してなり各々独立
しており、各々の雌ネジ路９によってのみ外部に連通し
ている。Reference numeral 10 denotes a bag-shaped chamber, which is bored at the tip of each female screw path 9 and has a slightly wider diameter than the female screw path 9, and is independent from the other, communicating with the outside only through each female screw path 9. ing.
６はバッキングである。なお、上記ケース１蓋ケース２
及び中子体３の材質は被計測媒体の性質、温度によって
適宜、金属、合成樹脂を使用する。6 is the backing. In addition, the above case 1 lid case 2
As for the material of the core body 3, metal or synthetic resin is used as appropriate depending on the properties and temperature of the medium to be measured.
次にこの発明の作用、原理を説明する。Next, the operation and principle of this invention will be explained.
通常被計測管側（入口）にケース１の縦孔１２を接続し
、圧力計等の計測側（出口）に蓋体１６の通孔を接続す
るが、はぼ上下左右対称であるので逆も可能である。Normally, the vertical hole 12 of the case 1 is connected to the side of the pipe to be measured (inlet), and the through hole of the lid body 16 is connected to the measuring side (outlet) of a pressure gauge, etc., but since the pipe is vertically and horizontally symmetrical, the reverse is also possible. It is possible.
このように計器用脈動防止器を装置すると、被計測管よ
り脈動圧は縦孔１２より入り通路１７を通過し通孔１１
より出る。When the instrument pulsation preventer is installed in this way, the pulsating pressure from the pipe to be measured enters through the vertical hole 12, passes through the passage 17, and passes through the through hole 11.
It comes out more.
まず脈動圧は、縦孔１２より、一次的に袋状チャンバー
１０に入り、周辺方向に均等に分散する。First, the pulsating pressure primarily enters the bag-shaped chamber 10 through the vertical hole 12 and is evenly distributed in the peripheral direction.
このとき、中子体３は蓋体１６と中空円筒部１３とによ
って構成される空間内で極微少な振動可能であり、通路
１７は絞り突縁４と輪状凹部５とによって広狭交互に多
数連続するものである。At this time, the core body 3 is able to vibrate minutely within the space formed by the lid body 16 and the hollow cylindrical part 13, and the passages 17 are formed by the aperture rim 4 and the annular recess 5, which are alternately wide and narrow. It is something.
ここを通過する圧力媒体の圧力は、狭部で絞られて圧縮
された後、広部で急激で膨張する。The pressure of the pressure medium passing through this area is narrowed and compressed in the narrow part, and then rapidly expands in the wide part.
このように圧縮と膨張が繰り返されることによって脈動
圧は急速かつ順次に減衰され、理想的な平均圧力が得ら
れる。By repeating compression and expansion in this way, the pulsating pressure is rapidly and sequentially attenuated, and an ideal average pressure is obtained.
この作用を、従来のニードル弁を使用した場合（第６図
）と比較すると、この発明では輪状の狭間隙が多層なた
め、一つの絞り（狭間隙）における脈動吸収作用は小さ
くても良く、従って一つの狭間隙の面積（有効通過面積
）は比較的広くとれる（第７図）。Comparing this effect with the case of using a conventional needle valve (Fig. 6), in this invention, since the annular narrow gap is multilayered, the pulsation absorbing effect in one throttle (narrow gap) may be small, Therefore, the area (effective passage area) of one narrow gap can be relatively large (FIG. 7).
雌ネジ路９は中子体３を中空円筒部１３へ着脱するとき
に雄ネジを設けた引抜具によって作業をし易くするだめ
のものである。The female screw path 9 is used to facilitate the operation of attaching and detaching the core body 3 to and from the hollow cylindrical portion 13 using a puller provided with a male screw.
この発明は上述のような構成、作用を有するので従来、
多発した被計測圧力媒体中のゴミ等による絞り部（狭間
隙）における閉塞事故は絞り部の有効通過面積が比較的
広く、か２形状が細長い円輪形であり、その数が多いと
いうことによりほとんど発生しないという効果がある。Since this invention has the above-mentioned configuration and operation, conventionally,
The frequent blockage accidents at constricted parts (narrow gaps) caused by dust, etc. in the pressure medium to be measured are rarely caused by the fact that the effective passage area of the constricted part is relatively wide, the shape of the constricted part is an elongated circular ring, and there are a large number of them. The effect is that it does not occur.
又、構成が簡単な３つの部品からなるため、組立、分解
が容易で互換性があるとともに、分解することによって
全部品が開放状態となるため点検、手入れが容易かつ確
実に行なうことが出来る。In addition, since it is composed of three simple parts, it is easy to assemble and disassemble and is compatible, and all parts are opened when disassembled, making inspection and maintenance easy and reliable.
更に、中子体の両端面に袋状チャンバーを設けたことに
より入力圧（脈動を含む圧力波）を一次的に受は止め周
辺方向に均等に分散させる効果があり、上側となる袋状
チャンバー１０は落下ゴミ等の異物溜りとなり、通路１
７への異物搬送を防止する効果がある。Furthermore, by providing bag-shaped chambers on both end faces of the core body, the input pressure (pressure waves including pulsations) is temporarily absorbed and is evenly dispersed in the peripheral direction. 10 becomes a collection of foreign matter such as fallen garbage, and passage 1
This has the effect of preventing foreign matter from being transferred to 7.
図はこの発明の実施例を示すもので、第１図は平面図、
第２図は正面図、第３図は正面断面図、第４図は底面図
、第５図は第３図のＡ−Ａ断面図の二部拡大断面図、第
６図はニードル弁を使用した場合の脈動圧吸収状態を示
す図、第７図はこの発明の脈動圧吸収状態を示す図であ
る。
１・・・・・・ケース、２・・・・・・蓋ケース、３・
・・・・・中子体、４．４′・・・・・絞り突縁、５，
５′・・・・・・輪状凹部、６・・・・・・バッキング
、７・・・・・・接続雌ネジ、８・・・・・・接続雄ネ
ジ、９・・・・・・雌ネジ路、１０・・・・・・袋状チ
ャンバー、１１・・・・・・通孔、１２・・・・・・縦
孔、１３・・・・・・中空円筒部、１４・・・・・・嵌
合雄ネジ、１５・・・・・・嵌合雌ネジ、１６・・・・
・・蓋体、１７・・・・・・通路、△ｐ・・・・・・脈
動圧、ｐ・・・・・・平均圧力。The figures show an embodiment of the invention, and Figure 1 is a plan view;
Figure 2 is a front view, Figure 3 is a front sectional view, Figure 4 is a bottom view, Figure 5 is an enlarged sectional view of the A-A cross section in Figure 3, and Figure 6 is a needle valve used. FIG. 7 is a diagram showing the pulsating pressure absorption state of the present invention. 1... Case, 2... Lid case, 3.
... Core body, 4.4' ... Drawing flange, 5,
5'...Annular recess, 6...Backing, 7...Connection female thread, 8...Connection male thread, 9...Female Screw path, 10... Bag-like chamber, 11... Through hole, 12... Vertical hole, 13... Hollow cylindrical portion, 14... ...Mating male screw, 15...Mating female screw, 16...
... Lid body, 17 ... Passage, △p ... Pulsating pressure, p ... Average pressure.
Claims (1)
を貫設したケース１と、該ケース１に螺合し通孔１１を
設けた蓋ケース２と、端面及び円周面に亘り絞り突縁４
，４′と輪状凹部５，５′を交互に多数形成した中子体
３とから成り、該中子体３を上記中空円筒部１３に装嵌
し、中子体３外壁と中空円筒部１３内壁とによって成る
広狭交互に連続する通路１７をケース１の縦孔１２及び
蓋ケース２０通孔１１に上下連通し得るように構成し、
かつ中子体３の両端面に各々開口する雌ねじ路９を中子
体３の内部に向って掘設し、その各先端に連続して袋状
チャンバー１０を掘設したことを特徴とする計器用圧力
脈動防止器。1 Vertical hole 12 communicating with a hollow cylindrical part 13 with one end open
A case 1 is formed through the case 1, a lid case 2 is screwed onto the case 1 and provided with a through hole 11, and a diaphragm ridge 4 is formed over the end surface and the circumferential surface.
, 4' and a core body 3 in which a large number of ring-shaped recesses 5, 5' are formed alternately. The passage 17, which is formed by an inner wall and continues in an alternating wide and narrow manner, is configured to communicate vertically with the vertical hole 12 of the case 1 and the through hole 11 of the lid case 20,
The instrument is characterized in that female screw passages 9 that open at both end faces of the core body 3 are dug toward the inside of the core body 3, and bag-like chambers 10 are continuously dug at each end of the female thread passages 9. Pressure pulsation preventer for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9440976A JPS5913689B2 (en) | 1976-08-06 | 1976-08-06 | Instrument pressure pulsation preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9440976A JPS5913689B2 (en) | 1976-08-06 | 1976-08-06 | Instrument pressure pulsation preventer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5319876A JPS5319876A (en) | 1978-02-23 |
| JPS5913689B2 true JPS5913689B2 (en) | 1984-03-31 |
Family
ID=14109433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9440976A Expired JPS5913689B2 (en) | 1976-08-06 | 1976-08-06 | Instrument pressure pulsation preventer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5913689B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10031064B2 (en) | 2010-10-25 | 2018-07-24 | Accuri Cytometers, Inc. | Systems and user interface for collecting a data set in a flow cytometer |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1168539A (en) * | 1979-06-04 | 1984-06-05 | Edward M. Goldberg | Apparatus and method for introducing fluid into and removing fluid from a living subject |
| JPS5851243U (en) * | 1981-10-01 | 1983-04-07 | 株式会社山武 | Differential pressure gauge shock wave protection device |
| JPS6239028U (en) * | 1985-08-27 | 1987-03-09 |
-
1976
- 1976-08-06 JP JP9440976A patent/JPS5913689B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10031064B2 (en) | 2010-10-25 | 2018-07-24 | Accuri Cytometers, Inc. | Systems and user interface for collecting a data set in a flow cytometer |
| US10481074B2 (en) | 2010-10-25 | 2019-11-19 | Becton, Dickinson And Company | Systems and user interface for collecting a data set in a flow cytometer |
| US11125674B2 (en) | 2010-10-25 | 2021-09-21 | Becton, Dickinson And Company | Systems and user interface for collecting a data set in a flow cytometer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5319876A (en) | 1978-02-23 |
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