JPS5967427A - Impactor for calibration of impact signal - Google Patents
Impactor for calibration of impact signalInfo
- Publication number
- JPS5967427A JPS5967427A JP57178665A JP17866582A JPS5967427A JP S5967427 A JPS5967427 A JP S5967427A JP 57178665 A JP57178665 A JP 57178665A JP 17866582 A JP17866582 A JP 17866582A JP S5967427 A JPS5967427 A JP S5967427A
- Authority
- JP
- Japan
- Prior art keywords
- impact
- detector
- impact signal
- signal
- calibration
- 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
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
[発明の技術分野]
本発明は物体の衝突による衝撃信号を検出する検出器に
基準インパクトを与える衝撃信号較正用衝撃装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an impact device for calibrating an impact signal that applies a reference impact to a detector that detects an impact signal caused by a collision of an object.
「発明の技術的背景」
近時、容器または配管等の中に紛れ込んだ物体を検出評
価Jるため、その物体と容器または配管との衝突による
衝撃信号を加速度計、速度計等の検出器により検出し、
その物体の重ω、形状等を定m的に評(illi ”4
る試みが行われている。``Technical Background of the Invention'' Recently, in order to detect and evaluate objects that have slipped into containers or piping, etc., it is necessary to use detectors such as accelerometers and speedometers to detect and evaluate impact signals caused by collisions between objects and containers or piping. detect,
Evaluate the weight ω, shape, etc. of the object in a definite manner (illi ”4
Attempts are being made to
第1図は沸騰水形原子炉を示すもので、図において符号
1は原子炉圧力容器を示している。FIG. 1 shows a boiling water nuclear reactor, and in the figure, reference numeral 1 indicates a reactor pressure vessel.
原子炉圧力容器1の側面には複数の、例えば加速度ム1
からなる検出器2が配設されCおり、この検出器2は炉
心3周辺に配設される機器からボルト、ナツト等の物件
4が抜り落ら、例えばバッフルプレート5に衝突した場
合には、この物体4とバッフルプレー1〜5との衝突に
J:る衝撃信号を検出づる。On the side surface of the reactor pressure vessel 1, there are a plurality of
A detector 2 is installed, and this detector 2 detects when an object 4 such as a bolt or nut falls off from equipment installed around the reactor core 3 and collides with a baffle plate 5, for example. , an impact signal generated by the collision between this object 4 and the baffle plays 1 to 5 is detected.
ぞして、この検出器2で検出された衝撃信号の波形、周
波数等から物体4の重量、形状等の推定を行なう。Then, the weight, shape, etc. of the object 4 are estimated from the waveform, frequency, etc. of the impact signal detected by the detector 2.
[背景技術の問題点]
しかしながら、一般に衝撃信号は例えば第1図に示すよ
うに、バッフルプレート5および原子炉圧力容器1を伝
播し検出器2により検出されるため、これらの媒体物の
影響を受け、検出器2で検出された衡撃信号から物体の
重量、形状等を確実に111定することは困難である。[Problems with the Background Art] However, generally, as shown in FIG. 1, the impact signal propagates through the baffle plate 5 and the reactor pressure vessel 1 and is detected by the detector 2, so it is difficult to eliminate the influence of these media. It is difficult to reliably determine the weight, shape, etc. of an object from the impact signal detected by the detector 2.
すなわち、一般に、衝撃信号は伝播する距離により減衰
し、また、この減衰は例えば媒体物の板厚等の構造的な
要素に複雑に影響される。従って、この検出器2で検出
されたvh撃倍信号らtF1点にお(Jる衝撃力を推定
づるためには、予め検出器2の較正の7jめの定格的な
インパクトを衝撃点に加え、そのインバクi〜による衝
撃信号を検出器2で検出し、ある定量的なインパクトと
検出信号の相関関係から衝撃信号を定格的に評価し、物
体の重量、形状等を正確にilf定することが考えられ
る。That is, in general, an impact signal is attenuated depending on the distance it propagates, and this attenuation is influenced in a complex manner by structural factors such as the thickness of the media. Therefore, in order to estimate the impact force at point tF1 from the vh multiplier signal detected by detector 2, the 7j rated impact of the calibration of detector 2 is added to the impact point in advance. , the impact signal caused by the impact i~ is detected by the detector 2, and the impact signal is ratedly evaluated based on the correlation between a certain quantitative impact and the detected signal, and the weight, shape, etc. of the object are accurately determined. is possible.
[発明の目的J
本発明はかかる従来の事情に対処してなされたもので、
物体の衝突による衝撃信号を検出する検出器に基準とな
るインパクト、ツなゎら基準となる衝撃信号を確実かつ
容易に出力することのCぎる!i撃信号較正用衝撃装置
を提供しようとJるものである。[Object of the Invention J The present invention has been made in response to such conventional circumstances,
It is very important to reliably and easily output a reference impact signal to a detector that detects an impact signal caused by a collision with an object. The present invention aims to provide an impact device for calibrating the i-impact signal.
F発明のm要J
すなわち本発明は、物体の衝突による衝撃信号を検出す
る検出器に基準となる衝撃信号を出ツノする衝撃部と、
この衝撃部を弾性体を介して支持する支持部とからなる
ことを特徴とする衝撃信号較正用衝撃装置である。F Summary of the Invention J In other words, the present invention provides an impact section that outputs a reference impact signal to a detector that detects an impact signal caused by a collision of an object;
The impact device for calibrating impact signals is characterized by comprising a support section that supports the impact section via an elastic body.
[発明の実施例]
以下本発明の詳細を図面に示づ一実施例について説明す
る。[Embodiment of the Invention] The details of the present invention will be described below with reference to the drawings.
第2図は本発明の一実施例の衝撃信号較正用衝撃装置を
示ずもので、図において符号6は先端部に先端先細りの
曲面7を右する衝撃部を示している。FIG. 2 shows an impact device for calibrating impact signals according to an embodiment of the present invention, and in the figure, reference numeral 6 indicates an impact portion having a tapered curved surface 7 at the tip thereof.
この衝撃部6は、一定のばね定数を備えた断面長方形形
状の弾性体8の先端に固設されており、弾性体8の後端
部は支持部9により支持されている。そして、この支持
部9は、例えば磁6、ポル1〜等J、り衝撃信号を与え
るべき、例えば原子炉圧力容器1のような被衝撃物体1
0に固設されている。The impact part 6 is fixed to the tip of an elastic body 8 having a rectangular cross section and having a constant spring constant, and the rear end of the elastic body 8 is supported by a support part 9 . This support part 9 is connected to an impact object 1, such as a nuclear reactor pressure vessel 1, to which an impact signal is to be applied, such as a magnet 6, a pole 1 to J, etc.
Fixed to 0.
丈なわら、このように構成された衝撃信号較正用衝撃装
置では、弾性体8は一定のばね定数kを右しCいるため
、この弾性体8を第2図に承りように、i Nt xだ
け上方へ持ち上げると、この弾性体8には(1/2)k
x2のエネルギートが苔えられる。従って、この距離×
を定量的に定めること 。However, in the impact device for impact signal calibration constructed in this way, the elastic body 8 has a constant spring constant k, so as shown in FIG. 2, i Nt x When the elastic body 8 is lifted upward by (1/2) k
x2 energy is mossed. Therefore, this distance x
Quantitatively determine.
により、加えられるインパクト、ずなわらエネルギーE
を定めることができる。The impact added by Zunawara Energy E
can be determined.
第3図はこのような衝撃信号較正用衝撃装置を使用し゛
C加速度t1からなる検出器2の較正を行なつ−Cいる
状態を示1ものC1原子炉圧力容器1の外周部に一定の
17f隔ぶをおいて検出器2ど衝撃信号較正用衝撃装置
とが配置されている。Figure 3 shows a state in which the detector 2 is calibrated using the acceleration t1 using such an impact device for calibrating the impact signal. A detector 2 and an impact device for calibrating impact signals are arranged with a distance therebetween.
このJ、うな状態で弾性体8先端を一定の距1i1x持
ち上げ、弾性体8の復元力により衝撃部6先端を原子炉
圧力容器1に衝突させることにより、一定のM準となる
衝撃信号が衝突部に発生し、この衝撃信号(よ検出器2
に検出される。従って、例えば原子炉圧力容器1のよう
な実際の構造物に即した衝撃点での衝撃信号と、衝撃点
から距離ぶ離れた検出器2で検出される衝撃信号との関
係を確実に知ることがぐき、検出器2を機械的、構造的
な個性をも含め−C較正することができる。By lifting the tip of the elastic body 8 by a certain distance 1i1x in this J state and causing the tip of the impact part 6 to collide with the reactor pressure vessel 1 by the restoring force of the elastic body 8, a shock signal with a constant M quasi is generated. This shock signal (from the detector 2)
detected. Therefore, it is necessary to reliably know the relationship between the impact signal at the impact point corresponding to an actual structure, such as the reactor pressure vessel 1, and the impact signal detected by the detector 2 located a distance from the impact point. It is possible to calibrate the detector 2, including its mechanical and structural characteristics.
[発明の効果]
以上述べたように本発明の衝撃信号較正用衝撃装置によ
れば、検出器に較正用の正確な衝撃信号を確実かつ容易
に出力することができる。[Effects of the Invention] As described above, according to the impact device for impact signal calibration of the present invention, an accurate impact signal for calibration can be reliably and easily outputted to the detector.
なお以上述べた実施例では、長尺部月からなる弾性体8
の撓みを利用し、この弾性体8にエネルギーを蓄えた例
について説明したが、第4図に示すように丸棒11のね
じれによるねじれエネルギー、第5図に示ずようにぽね
12の伸縮にJ、る伸縮エネルギー、第6図に示1よう
にばね13の回転による回転上ネルキー、第7図に示1
J、うに丸棒14の伸縮による伸縮エネルギーを用い(
til+72R部に衝撃を与えるようにしCもよいこと
は勿論である。In the embodiments described above, the elastic body 8 consisting of a long portion
We have explained an example in which energy is stored in the elastic body 8 by utilizing the deflection of J, the elastic energy due to the rotational energy due to the rotation of the spring 13 as shown in Fig. 6, 1 as shown in Fig. 7.
J, using the expansion and contraction energy due to the expansion and contraction of the sea urchin round bar 14 (
It goes without saying that C may also be used so that the impact is applied to the til+72R portion.
第1図は原子炉圧力容器内で落下した物体を検出りる方
法を承り説明図、第2図は本発明の一実施例の衝撃信号
較正用衝撃装置を示す縦断面図、第3図は第2図に示す
衝撃信号較正用衝撃装置を使用しC検出器の較正を行な
っている状態を示す説明図、第4図〜第7図は、それぞ
れ本発明の他の実施例を示すd1明図である。
2・・・・・・・・・・・・検出器
6・・・・・・・・・・・・衝撃部
9・・・・・・・・・・・・支持部
8・・・・・・・・・・・・弾性体
代理人弁理士 ′/頁 111 仏 −第1い
第2図Fig. 1 is an explanatory diagram of a method for detecting a fallen object in a reactor pressure vessel, Fig. 2 is a longitudinal sectional view showing an impact device for calibrating an impact signal according to an embodiment of the present invention, and Fig. 3 An explanatory diagram showing a state in which the C detector is calibrated using the impact device for calibrating the impact signal shown in FIG. 2, and FIGS. It is a diagram. 2......Detector 6...Impact part 9...Support part 8...・・・・・・Elastic Body Representative Patent Attorney'/Page 111 France - Figure 1 and 2
Claims (1)
器に基Qtとなる衝撃信号を出力する衝撃部と、この衝
撃部を弾性体を介して支持する支持部とからなることを
特徴とづる′fI8J撃信号較正信号較正用衝(1) 1 due to collision of objects! 'fI8J impact signal calibration is characterized by consisting of an impact part that outputs an impact signal based on Qt to a detector that detects i-Gokui No. 5, and a support part that supports this impact part via an elastic body. Signal calibration counter
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57178665A JPS5967427A (en) | 1982-10-12 | 1982-10-12 | Impactor for calibration of impact signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57178665A JPS5967427A (en) | 1982-10-12 | 1982-10-12 | Impactor for calibration of impact signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5967427A true JPS5967427A (en) | 1984-04-17 |
Family
ID=16052422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57178665A Pending JPS5967427A (en) | 1982-10-12 | 1982-10-12 | Impactor for calibration of impact signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5967427A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2588958A1 (en) * | 1985-10-18 | 1987-04-24 | Westinghouse Electric Corp | METHOD AND APPARATUS FOR APPLYING SHOCK TO SURFACE WITH CONTROLLED SHOCK ENERGY |
US6341518B1 (en) * | 1999-12-10 | 2002-01-29 | U.E Systems, Inc. | Ultrasonic standard |
-
1982
- 1982-10-12 JP JP57178665A patent/JPS5967427A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2588958A1 (en) * | 1985-10-18 | 1987-04-24 | Westinghouse Electric Corp | METHOD AND APPARATUS FOR APPLYING SHOCK TO SURFACE WITH CONTROLLED SHOCK ENERGY |
US6341518B1 (en) * | 1999-12-10 | 2002-01-29 | U.E Systems, Inc. | Ultrasonic standard |
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