JPS61167832A - Pressure measuring instrument - Google Patents
Pressure measuring instrumentInfo
- Publication number
- JPS61167832A JPS61167832A JP813185A JP813185A JPS61167832A JP S61167832 A JPS61167832 A JP S61167832A JP 813185 A JP813185 A JP 813185A JP 813185 A JP813185 A JP 813185A JP S61167832 A JPS61167832 A JP S61167832A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pressure gauge
- flow passages
- piping
- fluid
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0609—Pressure pulsation damping arrangements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
コンプレッサ、ポンプ及び、圧力容器等の圧力配管に取
付される圧力計の保護と、精密な圧力測定を可能にする
緩衝装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Use This invention relates to a shock absorber that protects pressure gauges attached to pressure piping of compressors, pumps, and pressure vessels, and enables accurate pressure measurement.
従来の技術
圧力配管に取付られる圧力計は、流体に脈動がある場合
、指針の振幅が大きく、ゲージの目盛は、正確に読み取
り難いものである。同等かの原因で、流体圧力が瞬間的
に上昇し、圧力計の指針が振れ切ったり、また、高温の
蒸気が圧力計のブルドン管に直接触れた場合、圧力計の
故障の起因になっていた。指針の振幅の大きい場合も、
耐用寿命を縮める等の欠点をもっていた。BACKGROUND OF THE INVENTION In a conventional pressure gauge attached to a pressure pipe, when there is pulsation in the fluid, the amplitude of the pointer is large and the scale of the gauge is difficult to read accurately. If the fluid pressure rises momentarily due to the same reason, causing the pressure gauge pointer to swing out, or if high-temperature steam comes into direct contact with the pressure gauge's Bourdon tube, this may cause the pressure gauge to malfunction. Ta. Even when the amplitude of the pointer is large,
It had drawbacks such as shortening its useful life.
従来、この対策としては、アキュムレタを圧力配管に取
付けすることにより、装置の流体吐出容量及び、管路の
容量に比し、大きい蓄圧容器部で、流体圧力の変動を緩
衝し、脈動を縮減するか、又は、ニードル弁を圧力計前
の圧力導入側に取付け、弁の絞り機構で、脈動流体の流
量を調整することにより、圧力計の指針の振れを小さく
する方法が採用されている。Conventionally, as a countermeasure for this problem, by attaching an accumulator to the pressure piping, a pressure accumulating container portion that is larger than the fluid discharge capacity of the device and the capacity of the pipeline buffers fluctuations in fluid pressure and reduces pulsation. Alternatively, a method has been adopted in which a needle valve is attached to the pressure introduction side in front of the pressure gauge, and the flow rate of the pulsating fluid is adjusted using the throttle mechanism of the valve, thereby reducing the deflection of the pointer of the pressure gauge.
これらアキュムレタの設置法では、蓄圧容器の設置場所
の制約、装置コストの上昇、また、圧力計の精密測定に
適する脈動流体の微小化は。These accumulator installation methods limit the installation location of the pressure accumulator, increase equipment costs, and require miniaturization of pulsating fluid suitable for precise measurement with pressure gauges.
蓄圧容器が大型となり、経済的でない。The pressure accumulating container becomes large and is not economical.
次に、ニードル弁の設置法でも、弁の絞り形状が、比較
的直線に近い単純な流路であるため。Secondly, even with the needle valve installation method, the shape of the valve throttle is a relatively straight, simple flow path.
この機能のみでは、液体の脈動を、精密測定に適する微
小脈ｌＩＪきするこきは、困難であった。With this function alone, it is difficult to measure the pulsation of liquid in microvessels suitable for precise measurement.
発明か解決しようとする問題点
圧力計に導入する圧力流体のうち、ウォータハンマによ
る急激な異常昇圧、また、コンブＬ／す及び、ポンプの
運転時に発生する脈動流体等の異常挙動は、圧力計故障
の起因、或は、精密な圧力測定を阻害している。Problems to be Solved by the Invention Among the pressure fluid introduced into the pressure gauge, abnormal behavior such as a sudden abnormal pressure increase due to a water hammer, or pulsating fluid that occurs during operation of a combustor or pump, This may cause a malfunction or prevent accurate pressure measurement.
これらの、異常挙動の流体を鎮静化し、脈動を縮小し、
圧力計の指針の振幅を微小にする低コストの緩衝装置を
開発し、圧力配管に装着することにより９問題点を解決
するものである。These fluids with abnormal behavior are calmed down, pulsation is reduced,
By developing a low-cost shock absorber that minimizes the amplitude of the pointer of a pressure gauge and installing it in the pressure piping, nine problems can be solved.
問題点を解決するための手段 圧力計に入る流体の流量を制御するために。Means to solve problems To control the flow rate of fluid entering the pressure gauge.
円筒形で、多孔質の構造体であるセラミックブロックを
、単数又は、複数を、圧力計を取付する圧力導入部に配
設し、脈動流体を曲折した無数の細孔で、緩衝又は吸着
し、圧力計に導入する圧力流体を、静圧に近い状態とし
て、指針の振れを縮小し、精密な圧力測定を可能にする
ものである。One or more ceramic blocks, which are cylindrical and porous structures, are arranged in the pressure introduction part where the pressure gauge is attached, and the pulsating fluid is buffered or adsorbed by the countless bent pores, The pressure fluid introduced into the pressure gauge is brought into a state close to static pressure, reducing the deflection of the pointer and enabling precise pressure measurement.
作用
多孔質の構造体のセラミックブロックは、無数の微細孔
をもち、その孔は、迷路状に曲折したものである。The ceramic block of the working porous structure has numerous micropores, and the pores are bent in a labyrinth shape.
このブロックを、圧力計の圧力導入部に配設し、脈動圧
力流体ｔ、緩衝又は、吸着することにより、脈動流体を
静圧に近い状態に置換し。This block is disposed at the pressure introduction part of the pressure gauge and buffers or adsorbs the pulsating pressure fluid, thereby replacing the pulsating fluid with a state close to static pressure.
圧力計の指針の振れを微小化して、ゲージ目盛の精密測
定を可能にしたものである。This minimizes the deflection of the pressure gauge pointer, making it possible to accurately measure the gauge scale.
また、セラミックブロックは、酸及び、アルカリ等の流
体に対して、殆ど腐食しない耐食性をもち、かつ、
１０００℃前後の高温流体にも耐える固体の無機材料と
して、秀れた特性をもっている。In addition, ceramic blocks have corrosion resistance that hardly corrodes against fluids such as acids and alkalis, and
It has excellent properties as a solid inorganic material that can withstand high-temperature fluids of around 1000°C.
更に、工業化により、安定した品質のものが容易に成形
可能であるので、広範囲の流体に適応できる特徴をもっ
ている。Furthermore, due to industrialization, products of stable quality can be easily molded, so they have the characteristic of being applicable to a wide range of fluids.
実施例
第１図は２本発明による。実施の一例を示したもので、
圧力計４は、ガスケット８全介して。Embodiment FIG. 1 shows two embodiments according to the present invention. This is an example of implementation.
The pressure gauge 4 is inserted through the gasket 8.
圧力計側継手２のねじ部５によって組付られる。It is assembled by the threaded portion 5 of the pressure gauge side joint 2.
また、配管側装置とは、配管側継手ｌのねじ部６によっ
て、装着される。１１．１４は流路、１２゜１３は広い
流路で液溜めを示す。配管側継手ｌと圧力計側継手２と
は、圧止め用の０リング９を介して、ねじ部７で結合し
、その中に１円筒状の多孔質のセラミックブロック３を
、単数又は複数、配設した圧力緩衝装置としている。多
孔質のセラミックブロックは、迷路状に曲折し連通ずる
無数の細孔全もち、その細孔流路の集積は、１１．１４
の流路径部に比し、数倍の断面積をもっている。Further, the piping side device is attached by the threaded portion 6 of the piping side joint l. Reference numerals 11, 14 and 12 indicate channels, and 12 and 13 indicate wide channels and liquid reservoirs. The piping side joint 1 and the pressure gauge side joint 2 are connected at a threaded portion 7 via an O-ring 9 for pressure stopping, and one or more cylindrical porous ceramic blocks 3 are inserted therein. A pressure buffer is installed. A porous ceramic block has countless pores that bend and communicate in a labyrinth shape, and the accumulation of pore channels is 11.14
It has a cross-sectional area several times larger than the diameter of the flow path.
圧力配管からの脈動する流体は、流路１１から。The pulsating fluid from the pressure piping is from the flow path 11.
広い流路１２を経て、多孔質のセラミックブロック８の
表面に開口する無数の細孔から、内部が迷路上に入りく
んだ油路を経て、広い流路から。From the wide flow path, through the wide flow path 12, through the numerous pores opening on the surface of the porous ceramic block 8, through the oil path whose interior is shaped like a labyrinth.
圧力計４に導入される。すなわち、脈動流体は。It is introduced into the pressure gauge 4. That is, the pulsating fluid.
第１図に示した配管装置によ゛す、拡大、縮小。Expansion and reduction according to the piping equipment shown in Figure 1.
曲折、絞り等の複雑な複合作用が行なわれ、流体は緩衝
、吸着、沈静されてから圧力計４に導入されるので、圧
力計のブルドン管には、準静的な圧力の状態で負荷され
る。したがって、圧力計の指針の振れは安定し、微小な
ものとなるので、圧力計の精度保持と、正しい精密計測
が可能となった。The fluid is buffered, adsorbed, and calmed by complex combined actions such as bending and constriction before being introduced into the pressure gauge 4, so the Bourdon tube of the pressure gauge is loaded with a quasi-static pressure. Ru. Therefore, the deflection of the pointer of the pressure gauge is stable and small, making it possible to maintain the accuracy of the pressure gauge and perform accurate and precise measurements.
第２図は、従来の圧力計測装置の実施の一例を示したも
ので、ポンプ又は、コンプレサからの脈動流体は、圧力
配管２４．継手詔、パイプサイホン四、ニードル弁２１
を経て、圧力計４に導入される。パイプサイホン２２は
９円曲部に液溜りが設けられ、直接、圧力計のブルドン
管に触れるのを防止したものである。FIG. 2 shows an example of implementation of a conventional pressure measuring device, in which pulsating fluid from a pump or compressor is transferred to a pressure pipe 24. Fitting edict, pipe siphon 4, needle valve 21
It is then introduced into the pressure gauge 4. The pipe siphon 22 is provided with a liquid reservoir at the nine-circle bend to prevent it from directly touching the Bourdon tube of the pressure gauge.
また、ニードル弁２２は、脈動流体の流量を、弁のニー
ドル機構により縮小し、圧力計の指針の振れを調整する
ものである。Further, the needle valve 22 reduces the flow rate of the pulsating fluid using a needle mechanism of the valve, and adjusts the deflection of the pointer of the pressure gauge.
発明の効果
ポンプ又は、コンブレサにより発生した脈動圧力流体を
、流路の拡大、縮小及び、迷路状に曲折した無数の細孔
の中を通し、流体が緩衝及び吸着作用により、沈静し、
準静圧的な流体に置換してから、圧力計に導入すること
が、簡単な構造で可能となった。Effects of the Invention The pulsating pressure fluid generated by a pump or a compressor is passed through the expansion and contraction of the flow path and the numerous pores bent in a labyrinth, and the fluid is calmed down by buffering and adsorption.
With a simple structure, it is now possible to replace the fluid with a quasi-static fluid and then introduce it into the pressure gauge.
これにより１次の効果を、もたらした。This brought about the first-order effect.
（１） 圧力計の指針の振れが微小となったので。(1) The swing of the pressure gauge pointer has become very small.
ゲージ目盛の読み取りが精密で正確になった。Gauge scale readings are now precise and accurate.
（２） 圧力計の指針の振幅が安定し、瞬間的な指針
の振れ切りがなくなり、耐用寿命が永くなった。(2) The amplitude of the pressure gauge pointer is stabilized, there is no momentary swinging out of the pointer, and the service life is extended.
（３） 高温流体が、圧力計のプルトノ管に直接触れ
ないので、圧力計の高温による劣化全なくした。(3) Since the high-temperature fluid does not come into direct contact with the Plutono tube of the pressure gauge, there is no deterioration of the pressure gauge due to high temperatures.
（４）緩衝体の材料を、多孔質のセラミックブロックの
構造体に限定したので、秀れた耐食性及び、耐高温性か
ら、同一部品で、広い範囲の流体に適用することができ
た。(4) Since the buffer material was limited to a porous ceramic block structure, the same component could be applied to a wide range of fluids due to its excellent corrosion resistance and high temperature resistance.
（５） 円筒形の多孔質のセラミックブロックは。(5) A cylindrical porous ceramic block.
工業化により、経済的に、安定供給可能であり、また、
簡単な形状で、配管装置への組付。Due to industrialization, stable supply is possible economically, and
Easy to assemble into piping equipment.
取外しが容易になった。Removal has become easier.
第１図は１本発明に係る実施例の構成を示した一部破断
の縦断面図で、第２図は、従来例の、配管部材の概略図
である。
ｌ・・・配管側継手 ２・・・圧力計側継手３・
・・セラミックブロック ４・・・圧力計１１・・・
圧力導入側流路 １２．１３・・・広い流路、液溜め１
４・・・圧力計側流路
第１図
１・・・配管側継手 ２・・圧力計側継手３
・・・セラ２７クブロノク ４・・・圧力計５・
・・圧力計取付ねじ部 ６・・・配管側ねじ部１１
・・圧力導入側流路 １４・・・圧力計側流路第
２図FIG. 1 is a partially cutaway vertical cross-sectional view showing the configuration of an embodiment according to the present invention, and FIG. 2 is a schematic diagram of a conventional piping member. l...Piping side joint 2...Pressure gauge side joint 3.
... Ceramic block 4 ... Pressure gauge 11 ...
Pressure introduction side flow path 12.13... wide flow path, liquid reservoir 1
4... Pressure gauge side flow path Figure 1 1... Piping side joint 2... Pressure gauge side joint 3
...Cera 27 Kuburonok 4...Pressure gauge 5.
...Pressure gauge mounting thread part 6...Piping side thread part 11
...Pressure introduction side flow path 14...Pressure gauge side flow path Fig. 2
Claims (1)
細孔をもつ、多孔質のセラミックブロックを配設したこ
とを特徴とする圧力計測装置。[Scope of Claims] A porous ceramic block having a flow passage cross-sectional area larger than the flow passage diameter of the pressure introduction part of the pressure gauge and having countless pores that are bent and communicated in a maze-like manner is disposed. A pressure measuring device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP813185A JPS61167832A (en) | 1985-01-19 | 1985-01-19 | Pressure measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP813185A JPS61167832A (en) | 1985-01-19 | 1985-01-19 | Pressure measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61167832A true JPS61167832A (en) | 1986-07-29 |
Family
ID=11684731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP813185A Pending JPS61167832A (en) | 1985-01-19 | 1985-01-19 | Pressure measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61167832A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0288827A2 (en) * | 1987-04-18 | 1988-11-02 | Parker-Ermeto Gmbh | Device for measuring pressures |
| JPH0278923A (en) * | 1988-09-14 | 1990-03-19 | Chubu Electric Power Co Inc | Measuring method for dynamic water pressure and dynamic water pressure meter |
| WO2007026602A1 (en) * | 2005-08-31 | 2007-03-08 | Surpass Industry Co., Ltd. | Pressure gauge and pressure gauge assembly |
| JP2008241610A (en) * | 2007-03-28 | 2008-10-09 | Kurita Water Ind Ltd | Vapor sampling method |
| GB2489191A (en) * | 2010-10-14 | 2012-09-26 | Rolls Royce Plc | Pressure indicator with an inlet pipe having a path length greater than its nominal length |
| US8573061B2 (en) | 2010-10-14 | 2013-11-05 | Rolls-Royce Plc | Pressure indicator |
| US8667848B2 (en) | 2010-10-14 | 2014-03-11 | Rolls-Royce Plc | Pressure indicator |
| CN105043655A (en) * | 2015-07-10 | 2015-11-11 | 南车南京浦镇车辆有限公司 | Throttling and flow stabilizing device capable of preventing airflow fluctuation |
-
1985
- 1985-01-19 JP JP813185A patent/JPS61167832A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0288827A2 (en) * | 1987-04-18 | 1988-11-02 | Parker-Ermeto Gmbh | Device for measuring pressures |
| EP0288827A3 (en) * | 1987-04-18 | 1990-07-04 | Parker-Ermeto Gmbh | Device for measuring pressures |
| JPH0278923A (en) * | 1988-09-14 | 1990-03-19 | Chubu Electric Power Co Inc | Measuring method for dynamic water pressure and dynamic water pressure meter |
| WO2007026602A1 (en) * | 2005-08-31 | 2007-03-08 | Surpass Industry Co., Ltd. | Pressure gauge and pressure gauge assembly |
| JP2007064805A (en) * | 2005-08-31 | 2007-03-15 | Surpass Kogyo Kk | Pressure gage and its assembly |
| US8037769B2 (en) | 2005-08-31 | 2011-10-18 | Surpass Industry Co., Ltd | Pressure gauge and pressure gauge assembly |
| JP2008241610A (en) * | 2007-03-28 | 2008-10-09 | Kurita Water Ind Ltd | Vapor sampling method |
| GB2489191A (en) * | 2010-10-14 | 2012-09-26 | Rolls Royce Plc | Pressure indicator with an inlet pipe having a path length greater than its nominal length |
| US8573061B2 (en) | 2010-10-14 | 2013-11-05 | Rolls-Royce Plc | Pressure indicator |
| US8650962B2 (en) | 2010-10-14 | 2014-02-18 | Rolls-Royce Plc | Pressure indicator |
| US8667848B2 (en) | 2010-10-14 | 2014-03-11 | Rolls-Royce Plc | Pressure indicator |
| CN105043655A (en) * | 2015-07-10 | 2015-11-11 | 南车南京浦镇车辆有限公司 | Throttling and flow stabilizing device capable of preventing airflow fluctuation |
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