JPH075414Y2 - Liquid sodium temperature / velocimeter - Google Patents
Liquid sodium temperature / velocimeterInfo
- Publication number
- JPH075414Y2 JPH075414Y2 JP1988089623U JP8962388U JPH075414Y2 JP H075414 Y2 JPH075414 Y2 JP H075414Y2 JP 1988089623 U JP1988089623 U JP 1988089623U JP 8962388 U JP8962388 U JP 8962388U JP H075414 Y2 JPH075414 Y2 JP H075414Y2
- Authority
- JP
- Japan
- Prior art keywords
- sheath thermocouple
- thermocouple
- cable
- shield
- guide tube
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Measuring Volume Flow (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Description
【考案の詳細な説明】 ＜産業上の利用分野＞ 本考案は、ナトリウム温度・流速計に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a sodium temperature / velocimeter.
更に詳述すれば、液体ナトリウム温度・流速計のセンサ
本体部に関するものである。More specifically, it relates to the sensor main body of the liquid sodium temperature / velocimeter.
＜従来の技術＞ 第６図は従来より一般に使用されている従来例の構成説
明図である。<Prior Art> FIG. 6 is an explanatory view of a configuration of a conventional example which is generally used in the past.
図において、１は案内管、２は渦電流センサ、３はシー
ス熱電対、４は複数のMIケーブルである。In the figure, 1 is a guide tube, 2 is an eddy current sensor, 3 is a sheath thermocouple, and 4 is a plurality of MI cables.
渦電流センサ２はシース熱電対３の周面を囲んで設けら
れ円筒状をなす。The eddy current sensor 2 is provided so as to surround the peripheral surface of the sheath thermocouple 3 and has a cylindrical shape.
MIケーブル４は渦電流センサ２に一端が接続され熱電対
３に平行に熱電対３を中心に放射状に設けられている。The MI cable 4 has one end connected to the eddy current sensor 2 and is provided in parallel with the thermocouple 3 in a radial pattern centering on the thermocouple 3.
ここで、MI（Mineral Insulated）ケーブル４は、外部
のノイズの影響を受けない、かつ、高温に耐える機能を
有するケーブルで、たとえば、特開昭50−87060号公報
（特公昭53−21664号公報）に示されているように、芯
線の周囲を例えばMnO2あるいはZnO2のような絶縁性鉱物
で囲み、これらを薄いステンレス管で覆ったものであ
る。Here, the MI (Mineral Insulated) cable 4 is a cable that is not affected by external noise and has a function of withstanding high temperature, and is disclosed in, for example, Japanese Patent Laid-Open Publication No. 50-87060 (Japanese Patent Publication No. 53-21216). ), The core wire is surrounded by an insulating mineral such as MnO 2 or ZnO 2 , and these are covered with a thin stainless tube.
以上の構成において、センサ2,3において、検出された
信号は、液体ナトリウム温度・流速計本体部に送られ
て、温度・流速が測定される。In the above configuration, the signals detected by the sensors 2 and 3 are sent to the liquid sodium temperature / velocimeter main body to measure the temperature / velocity.
＜考案が解決しようとする問題点＞ しかしながら、この様な装置においては、中性子遮蔽が
なされていない。<Problems to be Solved by the Invention> However, in such an apparatus, neutron shielding is not provided.
液体ナトリウム温度・流速計は、主として、原子炉の炉
芯中の冷却材のナトリウムの温度・流速を計測するもの
であるので、実用上は中性子遮蔽構造は重要な要素とな
る。Since the liquid sodium temperature / velocity meter mainly measures the temperature / velocity of sodium in the coolant in the core of the nuclear reactor, the neutron shielding structure is an important factor in practical use.
また、中性子遮蔽構造にするために、案内管１の開口部
側に鋼材等を挿入することが考えられるが、挿入、抜取
り作業が一々大変で、コストが高くなる。Further, it is conceivable to insert a steel material or the like into the opening side of the guide tube 1 in order to obtain the neutron shielding structure, but the insertion and extraction work is difficult and the cost becomes high.
本考案は、この問題点を解決するものである。The present invention solves this problem.
本考案の目的は、中性子遮蔽構造を満足し、かつ、案内
管への挿入、抜取りが容易なセンサ本体部を具備する液
体ナトリウム温度・流速計を提供するにある。An object of the present invention is to provide a liquid sodium temperature / velocimeter that satisfies a neutron shielding structure and includes a sensor main body that can be easily inserted into and removed from a guide tube.
＜問題点を解決するための手段＞ この目的を達成するために、本考案は、センサ本体部が
案内管に挿入される液体ナトリウム温度・流速計におい
て、 シース熱電対と、該シース熱電対の周面を囲んで設けら
れた円筒状の渦電流センサと、該渦電流センサに一端が
接続され前記熱電対に平行に該熱電対に中心に放射状に
設けられた複数のMIケーブルと、該MIケーブルと前記シ
ース熱電対とが移動自由に軸方向に貫通される円柱状の
所要数の中性子の透過を防止する中性子の遮蔽体と、該
遮蔽体の少なくとも１個毎に前記シース熱電対に設けら
れ該遮蔽体の移動を規制する止金とを備えるセンサ本体
部を具備したことを特徴とする液体ナトリウム温度・流
速計を構成したものである。<Means for Solving Problems> In order to achieve this object, the present invention provides a sheath thermocouple and a sheath thermocouple in a liquid sodium temperature / velocity meter in which a sensor body is inserted into a guide tube. A cylindrical eddy current sensor provided so as to surround the peripheral surface, a plurality of MI cables which are connected to the eddy current sensor at one end thereof and are provided radially in the center of the thermocouple parallel to the thermocouple, and the MI cable. A column-shaped neutron shield that prevents the passage of a required number of neutrons through which the cable and the sheath thermocouple are movably penetrated in the axial direction, and at least one shield is provided on the sheath thermocouple. The liquid sodium temperature / velocimeter is characterized by comprising a sensor main body provided with a clasp that restricts the movement of the shield.
＜作用＞ 以上の構成において、センサにおいて、検出された信号
は、液体ナトリウム温度・流速計本体部に送られて、温
度・流速が検出される。<Operation> In the above-described configuration, the signal detected by the sensor is sent to the liquid sodium temperature / velocimeter main body to detect the temperature / velocity.
しかして、中性子遮蔽構造を主として、MIケーブルとシ
ース熱電対とが軸方向に貫通される円筒状の所要数の遮
蔽体で構成したので、センサ本体部は案内管への挿入、
抜取りが容易なものがえられる。Then, since the neutron shielding structure is mainly composed of the required number of cylindrical shields through which the MI cable and the sheath thermocouple are penetrated in the axial direction, the sensor main body is inserted into the guide tube,
You can get the one that is easy to remove.
以下、実施例に基づき詳細に説明する。Hereinafter, detailed description will be given based on examples.
＜実施例＞ 第１図は本考案の一実施例の要部構成説明図である。<Embodiment> FIG. 1 is an explanatory view of a main part configuration of an embodiment of the present invention.
図において、第６図と同一記号の構成は同一機能を表わ
す。In the figure, the same symbols as those in FIG. 6 represent the same functions.
以下、第６図と相違部分のみ説明する。Only parts different from FIG. 6 will be described below.
５はMIケーブル４とシース熱電対３とが移動自由に軸方
向に貫通される円柱状の所要数の中性子の透過を防止す
る中性子の遮蔽体である。この場合は、中性子遮蔽を満
足するように、150個用いられている。Reference numeral 5 is a cylindrical neutron shield that prevents the MI cable 4 and the sheath thermocouple 3 from penetrating a required number of neutrons so that the MI cable 4 and the sheath thermocouple 3 can move freely in the axial direction. In this case, 150 pieces are used to satisfy the neutron shielding.
51は、第２図に示すごとく、遮蔽体５に設けられケーブ
ル４とシース熱電対３とが貫通される貫通孔である。As shown in FIG. 2, 51 is a through hole provided in the shield 5 and through which the cable 4 and the sheath thermocouple 3 penetrate.
６は遮蔽体４の少なくとも１個毎にシース熱電対３に設
けられ遮蔽体５の移動を規制する止金である。この場合
は、遮蔽体５の２個毎に設けられシース熱電対３にスポ
ット溶接されている。Reference numeral 6 is a stopper provided on the sheath thermocouple 3 for at least one of the shields 4 to restrict the movement of the shields 5. In this case, two shields 5 are provided and spot-welded to the sheath thermocouple 3.
以上の構成において、渦電流センサ2,熱電対３で検出さ
れた信号は、液体ナトリウム温度・流速計本体部に送ら
れて、温度・流速が測定される。In the above configuration, the signals detected by the eddy current sensor 2 and the thermocouple 3 are sent to the liquid sodium temperature / velocimeter main body to measure the temperature / velocity.
しかして、中性子遮蔽構造を、主として、MIケーブル４
とシース熱電対３とが貫通される、円筒状の所要数の遮
蔽体５で構成したので、センサ本体部は、案内管１への
挿入、抜取りが容易なものが得られる。Then, the neutron shielding structure is mainly used for the MI cable 4
Since the sheath thermocouple 3 and the sheath thermocouple 3 are penetrated by a required number of cylindrical shields 5, the sensor main body can be easily inserted into and removed from the guide tube 1.
すなわち、例えば、球状の遮蔽体5aを連続的にMIケーブ
ル４とシース熱電対３に設けたものにおいては、案内管
１に挿入しようとすると、第３図のように、遮蔽体5aで
押込む形となって、遮蔽体5aがはみだし、案内管１に強
く接する事になり、摩擦で挿入出来なくなる。That is, for example, in the case where the spherical shield 5a is continuously provided on the MI cable 4 and the sheath thermocouple 3, when it is attempted to be inserted into the guide tube 1, the shield 5a is pushed in as shown in FIG. It becomes a shape, the shield 5a protrudes, and it comes into strong contact with the guide tube 1 and cannot be inserted due to friction.
しかし、本考案では、第４図に示すごとく、遮蔽体５
は、止金６によってシース熱電対３に間隔をおいて配置
され、シース熱電対３にしたがって、引張られる形で案
内管１に挿入されるので、スムーズに挿入することがで
きる。しかも、遮蔽体５は円筒状であるので、傾いたと
しても、円筒の対向する平面で押合う形となるので、相
互の平面で傾きを、修正するように作用する。However, in the present invention, as shown in FIG.
Since they are arranged at intervals in the sheath thermocouple 3 by the clasp 6 and are inserted into the guide tube 1 in a stretched manner according to the sheath thermocouple 3, they can be smoothly inserted. Moreover, since the shield 5 has a cylindrical shape, even if the shield 5 is tilted, the shields 5 are pressed against each other by the opposing planes of the cylinders, so that the mutual planes act to correct the inclination.
また、円筒状の遮蔽体５は、球状の遮蔽体5aに比して、
第５図に示すごとく、中性子遮蔽構造に関して、充填率
を大きくとることが出来るので、指定充填率を満足しな
がら、遮蔽体５の直径を小さくできる。In addition, the cylindrical shield 5 is
As shown in FIG. 5, since the filling rate can be increased with respect to the neutron shielding structure, the diameter of the shield 5 can be reduced while satisfying the specified filling rate.
したがって、球状の遮蔽体5aに比して、案内管１により
挿入しやすいものが得られる。Therefore, as compared with the spherical shield 5a, a guide tube 1 that can be easily inserted can be obtained.
また、MIケーブル４とシース熱電対３とが移動自由に軸
方向に貫通される円柱状の所要数の遮蔽体５と、遮蔽体
５の少なくとも１個毎にシース熱電対３に設けられ遮蔽
体５の移動を規制する止金６とで構成したので、MIケー
ブル４とシース熱電対３とを曲げやすくするために、緩
やかに束ねる事が出来き、最小曲げ半径はセンサ２で決
まる構造に纏める事が出来た。Further, a required number of cylindrical shields 5 through which the MI cable 4 and the sheath thermocouple 3 are freely pierced in the axial direction, and at least one shield 5 is provided on the sheath thermocouple 3 Since it is composed of the stopper 6 for restricting the movement of 5, the MI cable 4 and the sheath thermocouple 3 can be gently bundled so that they can be bent easily, and the minimum bending radius is summarized in the structure determined by the sensor 2. I was able to do something.
更に、MIケーブルとシース熱電対とが移動自由に貫通さ
れる柱状の所要数の遮蔽体と、遮蔽体の少なくとも１個
毎にシース熱電対に設けられ遮蔽体の移動を規制する止
金とで構成したので、所要数の遮蔽体が、曲がりくねっ
た案内管に対してもシース熱電対に対して、僅か適切に
ズレながらフレキシブルなガイド役の機能を果たし、ま
た、止金がシース熱電対に固定されているので、シース
熱電対が装置の軸中心に存在することになるので、セン
サ部を案内管に挿入する場合に、細いリードの場合のよ
うにくねくねと曲がってしまい詰まってしまう事無く、
まっすぐに押し込む力が容易に得られる。In addition, a required number of columnar shields through which the MI cable and the sheath thermocouple are freely movably penetrated, and a clasp provided on the sheath thermocouple for at least one of the shields to restrict movement of the shields. Since it is configured, the required number of shields function as a flexible guide even with a slight deviation from the sheath thermocouple even for a winding guide tube, and a clasp is fixed to the sheath thermocouple. Since the sheath thermocouple exists in the axial center of the device, when inserting the sensor part into the guide tube, it does not bend and bend like a thin lead, and it does not become clogged.
The force to push straight is easily obtained.
また、MIケーブルの内の一本が、案内管の内壁に引っ掛
かっても、案内管に詰まる事無く、そのMIケーブルは遮
蔽体内を適切に移動してズレながらシース熱電対に引っ
張られて、結局スムーズに案内管に挿入される。Also, even if one of the MI cables is caught on the inner wall of the guide tube, the MI cable does not get stuck in the guide tube, and the MI cable is appropriately moved in the shield body and pulled by the sheath thermocouple while shifting, eventually It is smoothly inserted into the guide tube.
また、曲がりくねった案内管に対して、一方のMIケーブ
ルの曲率半径は大となり、他方のMIケーブルの曲率半径
は小となり所要長さに違いが発生するが、MIケーブルは
遮蔽体に対して移動自由に貫通しているので、曲率半径
小のMIケーブルがたるんで、スムーズに案内管に挿入さ
れる妨げになるおそれも生じない。Also, with respect to the meandering guide tube, the radius of curvature of one MI cable becomes large and the radius of curvature of the other MI cable becomes small, causing a difference in the required length, but the MI cable moves with respect to the shield. Since it penetrates freely, there is no risk that the MI cable with a small radius of curvature will sag and hinder the smooth insertion into the guide tube.
また、一本のMIケーブルで、曲率半径小と曲率半径大の
個所があれば、相殺されて、相互のMIケーブルが同一長
で良い事も起こり得る。In addition, if there is a small radius of curvature and a large radius of curvature in one MI cable, they may be canceled out, and the mutual MI cables may have the same length.
したがって、センサ本体部は案内管１への挿入、抜取り
が容易なものがえられる。Therefore, the sensor main body can be easily inserted into and removed from the guide tube 1.
なお、前述の実施例では、止金６は、遮蔽体５の２個毎
に設けられていると説明したが、これにかぎることはな
く、例えば、１個あるいは３個であってもよく、要する
に、案内管１に、遮蔽体５がスムーズに挿入されるもの
であればよい。In addition, in the above-mentioned embodiment, the stopper 6 is described as being provided for every two shields 5, but the present invention is not limited to this, and may be one or three, for example. In short, it is sufficient if the shield 5 is smoothly inserted into the guide tube 1.
＜考案の効果＞ 以上説明したように、本考案は、センサ本体部が案内管
に挿入される液体ナトリウム温度・流速計において、 シース熱電対と、該シース熱電対の周面を囲んで設けら
れた円筒状の渦電流センサと、該渦電流センサに一端が
接続され前記熱電対に平行に該熱電対を中心に放射状に
設けられた複数のMIケーブルと、該MIケーブルと前記シ
ース熱電対とが移動自由に軸方向に貫通される円柱状の
所要数の中性子の透過を防止する中性子の遮蔽体と、該
遮蔽体の少なくとも１個毎に前記シース熱電対に設けら
れ該遮蔽体の移動を規制する止金とを備えるセンサ本体
部を具備したことを特徴とする液体ナトリウム温度・流
速計を構成した。<Effects of the Invention> As described above, the present invention is provided in a liquid sodium temperature / velocity meter in which a sensor body is inserted into a guide tube, the sheath thermocouple being provided so as to surround the sheath thermocouple and the peripheral surface of the sheath thermocouple. A cylindrical eddy current sensor, a plurality of MI cables which are connected to the eddy current sensor at one end and are arranged radially in parallel with the thermocouple centering around the thermocouple, the MI cable and the sheath thermocouple Is a columnar neutron shield that penetrates freely in the axial direction to prevent transmission of a required number of neutrons, and at least one of the shields is provided in the sheath thermocouple to move the shield. A liquid sodium temperature / velocity meter was constituted by including a sensor main body portion having a stopper plate for regulating.
以上の構成において、センサにおいて、検出された信号
は、ナトリウム温度・流速計本体部に送られて、温度・
流速が測定される。In the above configuration, the signal detected by the sensor is sent to the sodium temperature / velocimeter main unit to
The flow rate is measured.
しかして、中性子遮蔽構造を主として、MIケーブルとシ
ース熱電対とが貫通される円筒状の所要数の遮蔽体で構
成したので、センサ本体部は案内管への挿入、抜取りが
容易なものがえられる。Since the neutron shielding structure is mainly composed of the required number of cylindrical shields through which the MI cable and the sheath thermocouple penetrate, the sensor body can be easily inserted into and removed from the guide tube. To be
また、遮蔽体は、止金によってシース熱電対に間隔をお
いて配置され、シース熱電対にしたがって、引張られる
形で案内管に挿入されるので、スムーズに挿入すること
ができる。Further, the shield is arranged at a distance from the sheath thermocouple by a clasp and is inserted into the guide tube in a stretched manner in accordance with the sheath thermocouple, so that the shield can be smoothly inserted.
しかも、遮蔽体は円筒状であるので、傾いたとしても、
円筒の対向する平面で押合う形となるので、相互の平面
で傾きを、修正するように作用する。Moreover, since the shield has a cylindrical shape, even if it is tilted,
Since the flat surfaces of the cylinders are pressed against each other, the flat surfaces of the cylinders work to correct the inclination.
また、円筒状の遮蔽体は、球状の遮蔽体に比して、中性
子遮蔽構造に関して、充填率を大きくとることが出来る
ので、指定充填率を満足しながら、遮蔽体の直径を小さ
くできる。In addition, since the cylindrical shield can have a larger filling rate in the neutron shielding structure than the spherical shield, the diameter of the shielding body can be reduced while satisfying the specified filling rate.
また、MIケーブルとシース熱電対とが移動自由に軸方向
に貫通される円柱状の所要数の中性子の遮蔽体と、遮蔽
体の少なくとも１個毎にシース熱電対に設けられ遮蔽体
の移動を規制する止金とで構成したので、MIケーブルと
シース熱電対とを曲げやすくするために、緩かに束ねる
事が出来き、最小曲げ半径はセンサで決まる構造に纏め
る事ができる。Further, the MI cable and the sheath thermocouple are provided with a cylindrical required number of neutron shields that are freely pierced in the axial direction, and at least one shield is provided on the sheath thermocouple to move the shields. Since it is composed of a clasp that regulates, the MI cable and the sheath thermocouple can be loosely bundled to facilitate bending, and the minimum bending radius can be put together into a structure determined by the sensor.
更に、MIケーブルとシース熱電対とが移動自由に貫通さ
れる柱状の所要数の遮蔽体と、遮蔽体の少なくとも１個
毎にシース熱電対に設けられ遮蔽体の移動を規制する止
金とで構成したので、所要数の遮蔽体が、曲がりくねっ
た案内管に対してもシース熱電対に対して、僅か適切に
ズレながらフレキシブルなガイド役の機能を果たし、ま
た、止金がシース熱電対に固定されているので、シース
熱電対が装置の軸中心に存在することになるので、セン
サ部を案内管に挿入する場合に、細いリードの場合のよ
うにくねくねと曲がってしまい詰まってしまう事無く、
まっすぐに押し込む力が容易に得られる。Furthermore, a required number of column-shaped shields through which the MI cable and the sheath thermocouple are movably penetrated, and a clasp provided on the sheath thermocouple for at least one of the shields to restrict movement of the shields. Since it is configured, the required number of shields function as a flexible guide even with a slight deviation from the sheath thermocouple even for a meandering guide tube, and a clasp is fixed to the sheath thermocouple. Since the sheath thermocouple is located at the axial center of the device, when inserting the sensor part into the guide tube, it does not bend and bend like a thin lead, and it does not become clogged.
The force to push straight is easily obtained.
また、MIケーブルの内の一本が、案内管の内壁に引っ掛
かっても、案内管に詰まる事無く、そのMIケーブルは遮
蔽体内を適切に移動してズレながらシース熱電対に引っ
張られて、結局スムーズに案内管に挿入される。Also, even if one of the MI cables is caught on the inner wall of the guide tube, the MI cable does not get stuck in the guide tube, and the MI cable is appropriately moved in the shield body and pulled by the sheath thermocouple while shifting, eventually It is smoothly inserted into the guide tube.
また、曲がりくねった案内管に対して、一方のMIケーブ
ルの曲率半径は大となり、他方のMIケーブルの曲率半径
は小となり所要長さに違いが発生するが、MIケーブルは
遮蔽体に対して移動自由に貫通しているので、曲率半径
小のMIケーブルがたるんで、スムーズに案内管に挿入さ
れる妨げになるおそれも生じない。Also, with respect to the meandering guide tube, the radius of curvature of one MI cable becomes large and the radius of curvature of the other MI cable becomes small, causing a difference in the required length, but the MI cable moves with respect to the shield. Since it penetrates freely, there is no risk that the MI cable with a small radius of curvature will sag and hinder the smooth insertion into the guide tube.
また、一本のMIケーブルで、曲率半径小と曲率半径大の
個所があれば、相殺されて、相互のMIケーブルが同一長
で良い事も起こり得る。In addition, if there is a small radius of curvature and a large radius of curvature in a single MI cable, they may be offset, and the mutual MI cables may have the same length.
したがって、センサ本体部は案内管への挿入、抜取りが
容易なものがえられる。Therefore, the sensor main body can be easily inserted into and removed from the guide tube.
従って、本考案によれば、中性子遮蔽構造を満足し、か
つ、案内管への挿入、抜取りが容易なセンサ本体部を具
備するナトリウム温度・流速計を実現することが出来
る。Therefore, according to the present invention, it is possible to realize a sodium temperature / velocimeter that satisfies the neutron shielding structure and includes a sensor main body that can be easily inserted into and removed from the guide tube.
第１図は本考案の一実施例の要部構成説明図、第２図は
第１図のＡ−Ａ断面図、第３図，第４図，第５図は第１
図の動作説明図、第６図は従来より一般に使用されてい
る従来例の構成説明図である。 １…案内管、２…センサ部、３…シース熱電対、４…MI
ケーブル、５…遮蔽体、51…貫通孔、６…止金。FIG. 1 is an explanatory view of the essential structure of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIGS.
FIG. 6 is a diagram for explaining the operation of the figure, and FIG. 6 is a diagram for explaining the configuration of a conventional example that is generally used in the past. 1 ... Guide tube, 2 ... Sensor part, 3 ... Sheath thermocouple, 4 ... MI
Cable, 5 ... Shield, 51 ... Through hole, 6 ... Clasp.
Claims (1)
トリウム温度・流速計において、 シース熱電対と、 該シース熱電対の周面を囲んで設けられた円筒状の渦電
流センサと、 該渦電流センサに一端が接続され前記熱電対に平行に該
熱電対を中心に放射状に設けられた複数のMIケーブル
と、 該MIケーブルと前記シース熱電対とが移動自由に軸方向
に貫通される円柱状の所要数の中性子の透過を防止する
中性子の遮蔽体と、 該遮蔽体の少なくとも１個毎に前記シース熱電対に設け
られ該遮蔽体の移動を規制する止金と を備えるセンサ本体部 を具備したことを特徴とする液体ナトリウム温度・流速
計。1. A liquid sodium temperature / velocimeter in which a sensor body is inserted into a guide tube, a sheath thermocouple, and a cylindrical eddy current sensor surrounding the peripheral surface of the sheath thermocouple. A plurality of MI cables, one end of which is connected to the eddy current sensor and which are arranged radially in parallel to the thermocouple and centered around the thermocouple, and the MI cable and the sheath thermocouple are movably penetrated in the axial direction. A sensor main body section having a cylindrical neutron shield for preventing the transmission of a required number of neutrons, and a clasp provided on the sheath thermocouple for each at least one of the shields to restrict movement of the shield A liquid sodium temperature / velocity meter characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988089623U JPH075414Y2 (en) | 1988-07-06 | 1988-07-06 | Liquid sodium temperature / velocimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988089623U JPH075414Y2 (en) | 1988-07-06 | 1988-07-06 | Liquid sodium temperature / velocimeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0212622U JPH0212622U (en) | 1990-01-26 |
| JPH075414Y2 true JPH075414Y2 (en) | 1995-02-08 |
Family
ID=31314168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988089623U Expired - Lifetime JPH075414Y2 (en) | 1988-07-06 | 1988-07-06 | Liquid sodium temperature / velocimeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075414Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819462Y2 (en) * | 1981-03-31 | 1983-04-21 | 株式会社東芝 | Measuring element storage device |
| JPS5937495A (en) * | 1982-08-25 | 1984-02-29 | 株式会社日立製作所 | Device for monitoring inside of reactor |
-
1988
- 1988-07-06 JP JP1988089623U patent/JPH075414Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0212622U (en) | 1990-01-26 |
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