JPH07174668A - Method and apparatus for inspection of nozzle - Google Patents

Method and apparatus for inspection of nozzle

Info

Publication number
JPH07174668A
JPH07174668A JP31962693A JP31962693A JPH07174668A JP H07174668 A JPH07174668 A JP H07174668A JP 31962693 A JP31962693 A JP 31962693A JP 31962693 A JP31962693 A JP 31962693A JP H07174668 A JPH07174668 A JP H07174668A
Authority
JP
Japan
Prior art keywords
nozzle
target plate
shutter
pressure
arms
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.)
Granted
Application number
JP31962693A
Other languages
Japanese (ja)
Other versions
JP3388847B2 (en
Inventor
Mitsuhiro Shibazaki
光弘 柴崎
Hiroshi Yoshida
宏 吉田
Takashi Nagai
高志 長井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemical Grouting Co Ltd
Original Assignee
Chemical Grouting Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chemical Grouting Co Ltd filed Critical Chemical Grouting Co Ltd
Priority to JP31962693A priority Critical patent/JP3388847B2/en
Publication of JPH07174668A publication Critical patent/JPH07174668A/en
Application granted granted Critical
Publication of JP3388847B2 publication Critical patent/JP3388847B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Measuring Fluid Pressure (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

PURPOSE:To simply check the accuracy of a nozzle on the spot. CONSTITUTION:A base part 1 which is provided with a gripping means 2, wheels 6, 6 and a shutter 7 which are installed at the base part 1, one pair of arms 8 which are installed so as to protrude from the base part 1, a target plate 9 which is installed on the arms 8, 8 at a prescribed distance L (nozzle diameter DX400) and a sheet of pressure-sensing paper S which is attached to the target plate 9,are installed. Whether the accuracy of a nozzle is good or not is judged on the basis of the diameter of a discolored part on the sheet of pressure-sensing papper S due to jet grout J.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、高圧水を噴射するいわ
ゆるジェットグラウト工法において、ジェットグラウト
を噴射する管体、いわゆる三重管ノズル、のノズルを検
査する方法及び装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for inspecting a nozzle of a pipe body for jetting jet grout, a so-called triple pipe nozzle, in a so-called jet grout method for jetting high pressure water.

【0002】[0002]

【従来の技術】ジェットグラウトを施工するに際し、ノ
ズルの精度は品質に非常に大きな影響を及ぼすものであ
る。更に、ノズルは、輸送時に破損するおそれがある。
したがって、現場において、しかも施工前或いは挿入前
の段階でノズルを検査する必要がある。
2. Description of the Related Art When a jet grout is constructed, the accuracy of the nozzle has a great influence on the quality. Further, the nozzle may be damaged during shipping.
Therefore, it is necessary to inspect the nozzle at the site and at the stage before construction or before insertion.

【0003】[0003]

【発明が解決しようとする課題】しかし、現場におい
て、簡単にノズルの精度をチェックできるノズルの検査
方法、検査装置として有効なものは、現段階では、提供
されていない。
However, at the present stage, no effective nozzle inspection method and inspection device capable of easily checking the nozzle accuracy in the field have been provided.

【0004】本発明は、現場においてノズルの精度を簡
単にチェックすることができるノズル検査方法及び装置
の提供を目的としている。
It is an object of the present invention to provide a nozzle inspection method and device which can easily check the accuracy of a nozzle on site.

【0005】[0005]

【課題を解決するための手段】本発明のノズル検査方法
は、水平方向に流線を形成するノズルを有する管体を把
持手段により該ノズルにおいて把持する工程と、該ノズ
ルから噴流を噴射して前記シャッタに対向して設けられ
た標的板に衝突させる噴射工程と、該標的板に取り付け
られている圧力感知体により検知された噴流の衝突圧力
からノズル部の良否を判定する判定工程とを含み、挿入
前に前記ノズルを検査することを特徴としている。
A nozzle inspection method of the present invention comprises a step of gripping a tubular body having a nozzle forming a streamline in a horizontal direction at the nozzle by a gripping means, and jetting a jet from the nozzle. A jetting step of colliding with a target plate provided facing the shutter, and a determining step of determining pass / fail of the nozzle portion from the collision pressure of the jet flow detected by a pressure sensor attached to the target plate , The nozzle is inspected before insertion.

【0006】また、本発明のノズル検査装置は、上述し
たノズル検査方法の実施に用いられるものであり、水平
方向に流線を形成するノズルを有する管体を当該ノズル
において把持する把持手段を備えた基部と、該基部に設
けられた前記ノズルに対向するシャッタと、基部の底部
に設けられた車輪と、該基部の両側に両端が固設された
一対のアームと、該一対のアームの所定距離に前記シャ
ッタに対向して設けられた標的板と、該標的板に取付け
られる圧力感知体とを設けている。
Further, the nozzle inspection apparatus of the present invention is used for carrying out the above-mentioned nozzle inspection method, and is provided with a holding means for holding a tubular body having a nozzle forming a streamline in the horizontal direction at the nozzle. A base, a shutter facing the nozzle provided on the base, a wheel provided on the bottom of the base, a pair of arms having both ends fixed to both sides of the base, and a predetermined pair of arms. A target plate provided facing the shutter at a distance and a pressure sensor attached to the target plate are provided.

【0007】ここで、水平方向に流線を形成するノズル
を有する管体としては、例えば三重管或いは三重管ノズ
ル等がある。
Here, as the tubular body having a nozzle forming a streamline in the horizontal direction, there is, for example, a triple pipe or a triple pipe nozzle.

【0008】本発明の実施に際して、前記把持部は、上
下一対の円弧状の受け部と、一端が受け部の一端に枢着
されたバンドと、バンドの他端と基板の他端とを止着す
る止め金具とで構成するのが好ましい。
In carrying out the present invention, the gripping portion stops a pair of upper and lower arcuate receiving portions, a band whose one end is pivotally attached to one end of the receiving portion, and the other end of the band and the other end of the substrate. It is preferably composed of a fastener to be worn.

【0009】また、所定距離は、例えばノズル径の40
0倍が実験的に好ましいとされている。
The predetermined distance is, for example, 40 nozzle diameters.
It is said that 0 times is experimentally preferable.

【0010】さらに、圧力感知体には、圧力感知紙いわ
ゆるプレスケールと称する圧力により変色する紙を用
い、測定時は前面に沿って薄金属板を設けるのが好まし
い。
Further, it is preferable that a pressure-sensitive paper, so-called prescale, which changes color by pressure is used as the pressure sensor, and a thin metal plate is provided along the front surface at the time of measurement.

【0011】そして、標的板の背面に、移動用のハンド
ルアームを設けるのが好ましい。
Then, it is preferable to provide a handle arm for movement on the back surface of the target plate.

【0012】[0012]

【作用】上記の様な構成を具備する本発明によれば、ハ
ンドルアームを持ってノズル検査装置を移動し、バンド
で三重管を巻き止め金具を締めて、該検査装置をノズル
部に対向してワンタッチでセットする。
According to the present invention having the above-mentioned structure, the nozzle inspection device is moved by holding the handle arm, the triple pipe is wound by the band, and the metal fitting is tightened so that the inspection device faces the nozzle portion. Set with one touch.

【0013】次いで、シャッタを開き、ノズルからジェ
ットグラウトを圧力感知紙に噴射する。
Next, the shutter is opened, and the jet grout is jetted from the nozzle onto the pressure sensitive paper.

【0014】最後に、圧力感知紙の変色部分の直径を測
定し、所定径以下のときは合格と判定し、所定値以上の
ときは不合格を判定する。
Finally, the diameter of the discolored portion of the pressure-sensitive paper is measured, and if the diameter is less than a predetermined value, it is judged as pass, and if it is more than the predetermined value, it is judged as fail.

【0015】この様に、本発明のノズル検査装置は移動
が極めて容易であるため、作業現場においても容易にノ
ズルの検査が可能となる。そして、品質の優劣に大きな
影響を及ぼすノズル精度の良否を、当該ノズルが使用さ
れる直前に検査出来るのである。
As described above, since the nozzle inspection apparatus of the present invention is extremely easy to move, it is possible to easily inspect the nozzle even at the work site. Then, the quality of the nozzle accuracy, which has a great influence on the quality, can be inspected immediately before the nozzle is used.

【0016】[0016]

【実施例】以下図面を参照して本発明の実施例を説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

【0017】図1ないし図3において、全体を符号Cで
示すノズル検査装置の基部1の底部両側には、車輪6が
設けられ、基部1の前面には、全体を符号2で示す把持
手段が設けられている。その把持手段2は、三重管Pの
ノズル部Nの上下部を受ける円弧状の受け部3と、一端
が受け部3の一端に枢着されたバンド4と、このバンド
4の他端と受け部3の他端とを止着する止め金具5とか
ら構成されている。
1 to 3, wheels 6 are provided on both sides of the bottom of a base 1 of a nozzle inspecting apparatus generally designated by C, and a gripping means generally designated by 2 is provided on the front surface of the base 1. It is provided. The gripping means 2 includes an arcuate receiving portion 3 for receiving the upper and lower portions of the nozzle portion N of the triple pipe P, a band 4 having one end pivotally attached to one end of the receiving portion 3, and the other end of the band 4. It is composed of a stopper 5 for fixing the other end of the portion 3 to the end.

【0018】また、基部1のノズル部Nに対向する部分
には、シャッタ7が設けられ、シャッタ7の両側部分に
は、後方に延びる一対のアーム8が固設されている。そ
れらのアーム8の後端部には、シャッタ7に対向して標
的板9が設けられている。この標的板9の後方には、U
字状のハンドルアーム10が突設され、また、アーム8
の略々中央部には、標的板9を図示の測定位置に保持す
るU字状の支持脚11が突設されている。また、一方の
アーム8のシャッタ7の付近には、上方に延びるハンド
ル12が突設されている。
A shutter 7 is provided at a portion of the base portion 1 facing the nozzle portion N, and a pair of arms 8 extending rearward are fixedly provided at both side portions of the shutter 7. A target plate 9 is provided at the rear end of the arms 8 so as to face the shutter 7. U behind the target plate 9
A character-shaped handle arm 10 is provided so as to project, and an arm 8 is provided.
A U-shaped support leg 11 for holding the target plate 9 at the measurement position shown in the figure is provided at a substantially central portion of. A handle 12 extending upward is provided in the vicinity of the shutter 7 of one arm 8 so as to project upward.

【0019】そして、標的板9には、圧力感知紙Sと、
その表面を覆う薄金属板(例えば真鍮板)Mとを着脱自
在に支持する図示しないフレームが設けられている。ま
た、標的板9とノズル部Nとの所定距離Lは、次のよう
にして設定されている。
On the target plate 9, pressure-sensitive paper S and
A frame (not shown) that detachably supports a thin metal plate (for example, a brass plate) M that covers the surface is provided. Further, the predetermined distance L between the target plate 9 and the nozzle portion N is set as follows.

【0020】図4には、ジェット噴流Jを標的(例えば
アルミニウム板)に衝突させた際の、ノズルからの距離
とアルミニウム壊食量との関係が示されている。図か
ら、ノズル径Dの約400倍の距離において、壊食量が
最大となり、ノズルの精度のチェックに最適なことが解
る。したがって、ジェットグラウト用のノズル径2.4
mmに対しては、 L=400D=400×2.4=960(mm) を設定するのが好ましい。
FIG. 4 shows the relationship between the distance from the nozzle and the amount of aluminum erosion when the jet jet J is made to collide with a target (for example, an aluminum plate). From the figure, it can be seen that the erosion amount becomes maximum at a distance of about 400 times the nozzle diameter D, which is optimal for checking the accuracy of the nozzle. Therefore, the nozzle diameter for jet grout 2.4
For mm, it is preferable to set L = 400D = 400 × 2.4 = 960 (mm).

【0021】次に、図5−9を参照して測定態様を説明
する。なお、図示のノズル検査装置C1は、標的板9A
の下端で標的板9Aを測定位置に保持し、ハンドルアー
ム10Aは、L字状に形成されている。
Next, the measurement mode will be described with reference to FIGS. In addition, the nozzle inspection device C1 shown in FIG.
The target plate 9A is held at the measurement position at the lower end of the handle arm 10A, and the handle arm 10A is L-shaped.

【0022】測定に際し、ハンドルアーム10Aを持ち
車輪6を転動させてノズル検査装置C1を移動し(図
6、図7)、三重管Pに受け部3を当接し、止め金具5
を掛けてノズル検査装置C1をワンタッチで三重管Pに
セットし、標的板9Aに圧力感知紙Sを取付け、その表
面を薄金属板Mで覆う(ステップS1)。次いで、シャ
ッタ7を開き、ジェットグラウトJを噴射させる(ステ
ップS2及び図8)。次いで、圧力感知紙S及び薄金属
板Mを取り外し、薄金属板Mをはがし、圧力感知紙Sの
変色部分の径が、所定径d以下か否かを判定する(ステ
ップS3)。
In the measurement, the handle arm 10A is held and the wheels 6 are rolled to move the nozzle inspection device C1 (FIGS. 6 and 7), the receiving portion 3 is brought into contact with the triple pipe P, and the stopper 5
, The nozzle inspection device C1 is set on the triple pipe P with one touch, the pressure sensing paper S is attached to the target plate 9A, and the surface thereof is covered with the thin metal plate M (step S1). Next, the shutter 7 is opened, and the jet grout J is ejected (step S2 and FIG. 8). Next, the pressure sensing paper S and the thin metal plate M are removed, the thin metal plate M is peeled off, and it is determined whether or not the diameter of the discolored portion of the pressure sensing paper S is equal to or smaller than the predetermined diameter d (step S3).

【0023】ステップS3がYESの場合、すなわち変
色部分の径d1が所定径d以下のときは、ジェットグラ
ウトの拡散度が正常でノズルの精度が良好であるため合
格と判定する(ステップS4)。これに対して、ステッ
プS3がNOの場合、すなわち変色部分の径d2が所定
径d以上の場合は、ジェットグラウトが拡散し過ぎてい
るため、ノズルの精度が不良であると判定する(ステッ
プS5)。
If YES in step S3, that is, if the diameter d1 of the discolored portion is equal to or smaller than the predetermined diameter d, the jet grout has a normal diffusivity and the nozzle accuracy is good, so it is determined to be acceptable (step S4). On the other hand, when step S3 is NO, that is, when the diameter d2 of the discolored portion is equal to or larger than the predetermined diameter d, the jet grout is excessively diffused, and it is determined that the nozzle accuracy is poor (step S5). ).

【0024】[0024]

【発明の効果】本発明が奏する作用効果を、以下に列挙
する。
The effects of the present invention are listed below.

【0025】(1) 構造が簡単で、誰にでも簡単に取
扱うことができる。
(1) The structure is simple and can be easily handled by anyone.

【0026】(2) 非常に軽量で、かつ、車輪を備え
ているので、簡単に移動することができる。
(2) Since it is extremely lightweight and has wheels, it can be easily moved.

【0027】(3) ワンタッチ式の把持手段により、
三重管に直接セットすることができる。
(3) By the one-touch type gripping means,
Can be set directly on the triple tube.

【0028】(4) 圧力感知紙により、容易に測定結
果からノズルの精度を判定することができる。
(4) The pressure sensing paper makes it possible to easily determine the accuracy of the nozzle from the measurement result.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示す側面図。FIG. 1 is a side view showing an embodiment of the present invention.

【図2】図1の正面図。FIG. 2 is a front view of FIG.

【図3】図1のA−A線矢視図。FIG. 3 is a view taken along the line AA of FIG.

【図4】ノズルから距離と壊食量との関係図。FIG. 4 is a diagram showing the relationship between the distance from the nozzle and the amount of erosion.

【図5】測定態様の手順フローチャート図。FIG. 5 is a flowchart of a procedure of a measurement mode.

【図6】ノズル検査装置の移動状態を示す側面図。FIG. 6 is a side view showing a moving state of the nozzle inspection device.

【図7】ノズル検査装置の三重管へのセット状態示す斜
視図。
FIG. 7 is a perspective view showing a state where the nozzle inspection device is set in a triple pipe.

【図8】ジェットグラウトの噴射状態を示す斜視図。FIG. 8 is a perspective view showing an injection state of jet grout.

【図9】圧力感知紙における合否判定を説明する正面
図。
FIG. 9 is a front view illustrating a pass / fail determination on the pressure-sensitive paper.

【符号の説明】[Explanation of symbols]

C、C1・・・ノズル検査装置 M・・・薄金属板 N・・・ノズル部 P・・・三重管 S・・・圧力感知紙 1・・・基部 2・・・把持手段 3・・・受け部 4・・・バンド 5・・・止め金具 6・・・車輪 7・・・シャッター 8・・・アーム 9、9A・・・標的板 10、10A・・・ハンドルアーム 11・・・支持脚 12・・・ハンドル C, C1 ... Nozzle inspection device M ... Thin metal plate N ... Nozzle part P ... Triple tube S ... Pressure sensing paper 1 ... Base part 2 ... Gripping means 3 ... Receiver 4 ... Band 5 ... Stopper 6 ... Wheel 7 ... Shutter 8 ... Arm 9, 9A ... Target plate 10, 10A ... Handle arm 11 ... Support leg 12 ... Handle

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 水平方向に流線を形成するノズルを有す
る管体を把持手段により該ノズルにおいて把持する工程
と、該ノズルから噴流を噴射して前記シャッタに対向し
て設けられた標的板に衝突させる噴射工程と、該標的板
に取り付けられている圧力感知体により検知された噴流
の衝突圧力からノズル部の良否を判定する判定工程とを
含み、挿入前に前記ノズルを検査することを特徴とする
ノズルの検査方法。
1. A step of gripping a tubular body having a nozzle forming a streamline in a horizontal direction at the nozzle by a gripping means, and a jet plate jetted from the nozzle to a target plate provided facing the shutter. A nozzle is inspected before insertion, including a jetting step of collision and a determination step of judging the quality of the nozzle part from the collision pressure of the jet detected by a pressure sensor attached to the target plate. Nozzle inspection method.
【請求項2】 水平方向に流線を形成するノズルを有す
る管体を当該ノズルにおいて把持する把持手段を備えた
基部と、該基部に設けられた前記ノズルに対向するシャ
ッタと、基部の底部に設けられた車輪と、該基部の両側
に両端が固設された一対のアームと、該一対のアームの
所定距離に前記シャッタに対向して設けられた標的板
と、該標的板に取付けられる圧力感知体とを設けたこと
を特徴とするノズルの検査装置。
2. A base portion having gripping means for gripping a tubular body having a nozzle forming a streamline in a horizontal direction at the nozzle, a shutter provided on the base portion facing the nozzle, and a bottom portion of the base portion. Wheels provided, a pair of arms having both ends fixed to both sides of the base, a target plate provided facing the shutter at a predetermined distance of the pair of arms, and a pressure attached to the target plate. An inspection device for a nozzle, which is provided with a sensor.
JP31962693A 1993-12-20 1993-12-20 Nozzle inspection method and apparatus Expired - Lifetime JP3388847B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31962693A JP3388847B2 (en) 1993-12-20 1993-12-20 Nozzle inspection method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31962693A JP3388847B2 (en) 1993-12-20 1993-12-20 Nozzle inspection method and apparatus

Publications (2)

Publication Number Publication Date
JPH07174668A true JPH07174668A (en) 1995-07-14
JP3388847B2 JP3388847B2 (en) 2003-03-24

Family

ID=18112389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31962693A Expired - Lifetime JP3388847B2 (en) 1993-12-20 1993-12-20 Nozzle inspection method and apparatus

Country Status (1)

Country Link
JP (1) JP3388847B2 (en)

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US7257995B1 (en) 2006-02-09 2007-08-21 Johann A. Krause Maschinenfabrik Method for testing nozzles of internal-combustion engines
JP2014062366A (en) * 2012-09-20 2014-04-10 Chemical Grouting Co Ltd Test method and test device for injection device for crossing jet
JP2015183353A (en) * 2014-03-20 2015-10-22 ケミカルグラウト株式会社 Determination apparatus and determination method
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JP2016191223A (en) * 2015-03-31 2016-11-10 前田建設工業株式会社 Apparatus for evaluating specification of injection from rod injection port
CN109141897A (en) * 2018-08-30 2019-01-04 航成(天津)科技有限公司 A kind of aero-engine nozzle flow integrated test system
JP2021098986A (en) * 2019-12-23 2021-07-01 株式会社竹中工務店 Determination pipe of ground improvement body, and determination method of ground improvement body
CN116713927A (en) * 2023-06-20 2023-09-08 哈尔滨东安实业发展有限公司 Multi-specification straight nozzle targeting test universal fixture

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DE102004043141A1 (en) * 2004-08-20 2006-02-23 Johann A. Krause Maschinenfabrik Gmbh Method for testing fuel injection nozzles of combustion engines comprises using a fluid jet directed onto a pressure sensor for testing each nozzle
US7257995B1 (en) 2006-02-09 2007-08-21 Johann A. Krause Maschinenfabrik Method for testing nozzles of internal-combustion engines
JP2014062366A (en) * 2012-09-20 2014-04-10 Chemical Grouting Co Ltd Test method and test device for injection device for crossing jet
JP2015183353A (en) * 2014-03-20 2015-10-22 ケミカルグラウト株式会社 Determination apparatus and determination method
JP2016118084A (en) * 2014-12-24 2016-06-30 ケミカルグラウト株式会社 Determination device and determination method
WO2016103750A1 (en) * 2014-12-24 2016-06-30 ケミカルグラウト株式会社 Determining device and determining method
US10261004B2 (en) 2014-12-24 2019-04-16 Chemical Grouting Co., Ltd. Determining device and determining method
JP2016191223A (en) * 2015-03-31 2016-11-10 前田建設工業株式会社 Apparatus for evaluating specification of injection from rod injection port
CN109141897A (en) * 2018-08-30 2019-01-04 航成(天津)科技有限公司 A kind of aero-engine nozzle flow integrated test system
JP2021098986A (en) * 2019-12-23 2021-07-01 株式会社竹中工務店 Determination pipe of ground improvement body, and determination method of ground improvement body
CN116713927A (en) * 2023-06-20 2023-09-08 哈尔滨东安实业发展有限公司 Multi-specification straight nozzle targeting test universal fixture

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