JPS62240898A - Hydrogen-concentration measuring device in nuclear-reactor container - Google Patents
Hydrogen-concentration measuring device in nuclear-reactor containerInfo
- Publication number
- JPS62240898A JPS62240898A JP61084226A JP8422686A JPS62240898A JP S62240898 A JPS62240898 A JP S62240898A JP 61084226 A JP61084226 A JP 61084226A JP 8422686 A JP8422686 A JP 8422686A JP S62240898 A JPS62240898 A JP S62240898A
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen
- optical
- containment vessel
- reactor containment
- pcv
- 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
- 229910052739 hydrogen Inorganic materials 0.000 claims description 48
- 239000001257 hydrogen Substances 0.000 claims description 48
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 42
- 230000003287 optical effect Effects 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 8
- 150000002431 hydrogen Chemical class 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 9
- 238000005070 sampling Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、原子炉格納容器の外部から操作して原子炉格
納容器内の水素濃度を測定することができる原子炉格納
容器内の水素濃度測定装置に関する。Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention relates to a nuclear reactor containment vessel that can be operated from outside the reactor containment vessel to measure hydrogen concentration within the reactor containment vessel. This invention relates to a device for measuring hydrogen concentration in a container.
（従来の技術）
一般に沸騰水型原子力発電所では、万一冷却材配管破断
事故が発生して原子炉水位が低下した場合を想定して、
炉心に装荷されているＸ燃料の被覆管構成材であるジル
コニウムと、炉水の反応により発生する水素の濃度を測
定することが要求されている。(Prior art) In general, in boiling water nuclear power plants, in the unlikely event that a coolant pipe rupture accident occurs and the reactor water level drops,
It is required to measure the concentration of hydrogen generated by the reaction between reactor water and zirconium, which is the cladding material of fuel X loaded in the reactor core.
従来上記した水素、ａ度の測定は、原子炉格納容器（以
下ＰＣｖという）内部のガスを抽出して行なわれてきた
。すなわち第４図に示すように、ＰＣＶ １に挿設され
た配管１９上には、除湿器２０．サンプリングポンプ２
１．水素分析計２２．サンプリングポンプ２３がこの順
に設けられ、配管１９は再びＰＣＶ １に接続されてい
る。Conventionally, the above-described measurement of hydrogen and a degree has been carried out by extracting the gas inside the nuclear reactor containment vessel (hereinafter referred to as PCv). That is, as shown in FIG. 4, a dehumidifier 20. sampling pump 2
1. Hydrogen analyzer 22. A sampling pump 23 is provided in this order, and the pipe 19 is connected to the PCV 1 again.
水素分析計２２には一般に熱伝導度型検出器が用いられ
る。A thermal conductivity type detector is generally used as the hydrogen analyzer 22.
上記１１Ｇ故が万一発生した場合、サンプリングポンプ
２１．２３を運転してＰＣＶ ｌ内のガスを抽出する。In the unlikely event that the above-mentioned failure 11G occurs, the sampling pumps 21 and 23 will be operated to extract the gas in the PCV I.
このときＰＣＶ ｌ内に充満していることが予想されろ
水蒸気は、除湿器２０で除湿され、水素分析計２２に送
られる。水素濃度を求めるには除湿した湿分を補正する
必要があるので、通常除湿器２０で発生した凝縮水を計
量して補正している。水素分析計２２を通過したサンプ
リングガスは再びＰＣＶ １に返送される。At this time, the water vapor expected to fill inside the PCV 1 is dehumidified by a dehumidifier 20 and sent to a hydrogen analyzer 22. In order to determine the hydrogen concentration, it is necessary to correct the dehumidified moisture content, so the correction is usually made by measuring the condensed water generated in the dehumidifier 20. The sampling gas that has passed through the hydrogen analyzer 22 is returned to the PCV 1 again.
（発明が解決しようとする問題点）
上述した水素濃度測定装置は、［’ＣＶ １の器壁外に
サンプリングガスを抽出するための配管１９を引出して
いるので、測定装置が複雑・大規模になっている。また
水素分析計２２に用いられているに検出器の性質上、湿
分補正による誤差が大きい。(Problems to be Solved by the Invention) The hydrogen concentration measuring device described above has the problem that the measuring device becomes complicated and large-scale because the pipe 19 for extracting the sampling gas is drawn out outside the vessel wall of the CV 1. It has become. Furthermore, due to the nature of the detector used in the hydrogen analyzer 22, errors due to moisture correction are large.
置を提供することにある６
〔発明の構成〕
（問題点を解決するための手段）
本発明においては、ＰＣＶ内の水素濃度測定装置に１通
気手段を有してＰＣＶ内に設置された収納箱と、温度制
御手段を具備して収納箱内に設けられた熱板と、この熱
板に密着させて設けられた光学式水素検出器と、 ｐｃ
ｖの器壁を貫通して光学式水素検出器に接続される光伝
送手段とを設けている。6 [Structure of the Invention] (Means for Solving the Problems) In the present invention, the hydrogen concentration measuring device in the PCV is provided with a storage device installed in the PCV with ventilation means. a box, a heating plate provided in the storage box with temperature control means, an optical hydrogen detector provided in close contact with the heating plate, and a PC.
An optical transmission means is provided which penetrates the vessel wall of the v and is connected to an optical hydrogen detector.
（作 用）
水素雰囲気に接触した光学式水素検出器は、水素濃度に
応じて通過光量が減衰するので、光伝送手段によってこ
れを検出することにより、ＰＣｖの器壁外から水素濃度
を測定することができる６熱板の温度を制御することに
より、これに密着した光学式水素検出器の温度特性が補
償される。光学式水素検出器と熱板は、通気手段を設け
た収納箱の内部に配置されているので、ＰＣＶ内のガス
気流の直撃による温度変動は回避される。(Function) When an optical hydrogen detector comes into contact with a hydrogen atmosphere, the amount of light passing through it is attenuated depending on the hydrogen concentration, so by detecting this with the optical transmission means, the hydrogen concentration can be measured from outside the PCv chamber wall. 6 By controlling the temperature of the hot plate, the temperature characteristics of the optical hydrogen detector in close contact with it can be compensated. Since the optical hydrogen detector and the hot plate are placed inside the storage box provided with ventilation means, temperature fluctuations due to direct impact from the gas flow inside the PCV are avoided.
（実施例）
以下本発明の一実施例を第１図乃至第３図を用いて説明
する。(Example) An example of the present invention will be described below with reference to FIGS. 1 to 3.
本実施例の概略構成を示す第１図において、ＰＣＶ １
の内部（図の左側）には、長方体の収納箱２が配置され
ている。収納箱２の上面と下面には、例えば円形の通気
孔３がそれぞれ適宜数明けられている。収納箱２の一側
面内には適宜の加熱手段（図示省略）を備えた熱板４が
設けられ、この加熱手段への電圧印加用のケーブル５が
ＰＣＶ １の器壁外へ導出されている。また熱板４には
その温度検出用の熱電対（図示省略）が付設され、この
熱電対の導線６がＰＣＶ １の器壁外へ導出されている
。In FIG. 1 showing the schematic configuration of this embodiment, PCV 1
A rectangular storage box 2 is arranged inside (on the left side of the figure). An appropriate number of, for example, circular ventilation holes 3 are provided on the upper and lower surfaces of the storage box 2, respectively. A heating plate 4 equipped with an appropriate heating means (not shown) is provided in one side of the storage box 2, and a cable 5 for applying voltage to this heating means is led out of the wall of the PCV 1. . Further, a thermocouple (not shown) for detecting the temperature is attached to the hot plate 4, and a conductive wire 6 of this thermocouple is led out of the wall of the PCV 1.
さらに熱板４には、収納箱２の内部に面して、光学式水
素検出器ユが密着するように取付けられ、この光学式水
素検出器ユに対する光入力用の光フアイバーケーブル８
．および出力用の２本の光フアイバーケーブル９，１０
が、それぞれＰＣＶ １の器壁を貫通させて、ＰＣＶｌ
の外部から導入・導出されている。Further, an optical hydrogen detector unit is attached to the heating plate 4 so as to face the inside of the storage box 2 in close contact with the optical hydrogen detector unit, and an optical fiber cable 8 for optical input to the optical hydrogen detector unit is attached.
．． and two optical fiber cables 9, 10 for output.
, respectively, by penetrating the vessel wall of PCV 1 and
It has been introduced or derived from outside the company.
光学式水素検出器−７−は第２図に詳細に示すように、
基板ＩＩ上に光フアイバケーブル８に接続された先導波
路１２が設けられている。先導波路１２は。The optical hydrogen detector-7- is shown in detail in FIG.
A guide waveguide 12 connected to an optical fiber cable 8 is provided on the substrate II. The leading wave path 12 is.
測定用導波路１３と基準用導波路１４に分岐され、それ
ぞれファイバーケーブル９．ＩＯに接続されている。測
定用導波路１３には水素センサ１５が設けられている。It is branched into a measurement waveguide 13 and a reference waveguide 14, each connected to a fiber cable 9. Connected to IO. A hydrogen sensor 15 is provided in the measurement waveguide 13 .
水素センサ１５には、例えば雑誌「計測と制御」Ｖｏ
Ｑ 、２４． Ｎｏ、 ９ 、 ＰＰ８２５〜８２６に
示された導波路型水素センサを用いることができるにの
導波路型水素センサは、第３図に縦断面として示される
ように、 ＬｉＮｂ０．の基板１１の上に導波路１３に
繁がる主導波路１６を重積し、さらにタングステン酸（
ｗｏｉ ）からなる反応層１７と、パラジウム（Ｐｄ）
からなる吸着層１８を順次積層しである。吸着層Ｉ８は
表面に液酸ブロンズが生成され、反応層１７は青色に着
色され光吸収係数が増加する６反応層１７は、光伝達の
コア部をなす主導波路１６に対するクラッド部を形成し
ているので、導波路１３からの導入光のエバネッセント
波成分が減衰し、結局水素の吸着量に応じて、水素セン
サ１５の通過光減衰量が増加するようになっている。For example, the hydrogen sensor 15 has a magazine "Measurement and Control" Vo.
Q, 24. The waveguide type hydrogen sensor which can use the waveguide type hydrogen sensor shown in No. 9, PP825-826 is made of LiNb0. The main waveguide 16 extending from the waveguide 13 is stacked on the substrate 11 of the substrate 11, and tungstic acid (
reaction layer 17 consisting of palladium (Pd)
Adsorption layers 18 consisting of the following are sequentially laminated. Liquid acid bronze is generated on the surface of the adsorption layer I8, and the reaction layer 17 is colored blue to increase the light absorption coefficient. Therefore, the evanescent wave component of the light introduced from the waveguide 13 is attenuated, and the amount of attenuation of the light passing through the hydrogen sensor 15 increases depending on the amount of hydrogen adsorbed.
原子炉に前記した事故が万一発生した場合。In the unlikely event that the above-mentioned accident occurs in a nuclear reactor.
ＰＣＶ ｌ内の温度は１７１℃迄上昇し、水素濃度は約
５％に達することが解析の結果予想されている。Analysis predicts that the temperature inside PCV I will rise to 171°C and the hydrogen concentration will reach approximately 5%.
これらに」ルき、本装置は、収納箱２ごと全体を別に用
意した校正用ケースに入れて密封し、上記１７１℃より
高い１８０℃一定に保ちながら、Ｎ、 １００％のガス
を封入して零点調整を行った後、Ｎ２バランスの５％水
素ガスに置換して５％点が校正されている。Accordingly, this device was constructed by placing the entire storage box 2 in a separately prepared calibration case and sealing it, and filling it with 100% N gas while keeping it at a constant temperature of 180°C, which is higher than the above 171°C. After zero point adjustment, the 5% point was calibrated by replacing the gas with 5% hydrogen gas with N2 balance.
次に作用を説明する。Next, the action will be explained.
熱板４はケーブル５を通じて電圧を印加し、熱電対によ
って温度を検出しながら温度１８０℃一定に制御される
。熱板４に密着した光学式水素検出器ユの温度も一定に
保たれるので、光学式水素検出器ユの温度による感度変
動は補償される。A voltage is applied to the hot plate 4 through the cable 5, and the temperature is controlled to be constant at 180° C. while the temperature is detected by a thermocouple. Since the temperature of the optical hydrogen detector unit in close contact with the hot plate 4 is also kept constant, sensitivity variations due to temperature of the optical hydrogen detector unit are compensated for.
ケーブル８によって光学式水素検出ＷＩｉΦ導入された
光は、ケーブル９およびケーブル１０によってｐｃｖ
ｉ外へ導出され、ケーブル９を経由した測定光は、ケー
ブル１０を経由した基準光と比較される。ＰＣＶ ｌ内
に水素が発生すると、収納箱２の通気孔３を通じて水素
センサ１５に到達した水素は。The light introduced by the cable 8 for optical hydrogen detection WIiΦ is transmitted to the PCV by the cable 9 and the cable 10.
The measurement light that is led out to the outside and has passed through the cable 9 is compared with the reference light that has passed through the cable 10. When hydrogen is generated in the PCV 1, the hydrogen reaches the hydrogen sensor 15 through the ventilation hole 3 of the storage box 2.
減少し、ケーブルＩＯの出力である変化のない」ん陽光
と比較され、水素濃度が測定される。The hydrogen concentration is measured by comparing it with the unchanged sunlight which is the output of the cable IO.
なお、光学式水素検出器Ｉは、通気孔３を設けた収納箱
２に収容されているので、ＰＣＶ ｌ内に生じたガス気
流の影響による温度変動を最少に保つことができる。Note that since the optical hydrogen detector I is housed in the storage box 2 provided with the ventilation hole 3, temperature fluctuations due to the influence of the gas flow generated within the PCV I can be kept to a minimum.
本発明によれば、原子炉格納容器内のガスを容器外に抽
出することなく、直接原子炉格納容器内で検出し濃度を
測定することが可能となり、装置の構成が簡素化され、
精度の向上が期待できる等顕著な効果を奏する。According to the present invention, it is possible to directly detect and measure the concentration of gas in the reactor containment vessel without extracting it outside the reactor containment vessel, simplifying the configuration of the device,
It has remarkable effects such as expected improvement in accuracy.
第１図は本発明の一実施例を示す概略構成図、第２図は
光学式水素検出器の斜視図、第３図センサの一例を示す
縦断面図、第４図は従来の原子炉格納容器内の水素濃度
測定装置を示すブロック図である。
１・・・原子炉格納容器 ２・・・収納箱３・・・
通気孔 ４・・・熱板５・・電圧印加用ケ
ーブル ６・・・熱電対の導線Ｉ・・・光学式水素検出
器
８、！１．１０・・・光ファイバケーブル代理人 弁理
士 則 近 憲 佑
同 三俣弘文
第１図
］５
第３図
第４図Fig. 1 is a schematic configuration diagram showing one embodiment of the present invention, Fig. 2 is a perspective view of an optical hydrogen detector, Fig. 3 is a vertical cross-sectional view showing an example of a sensor, and Fig. 4 is a conventional reactor containment. It is a block diagram showing a hydrogen concentration measuring device in a container. 1...Reactor containment vessel 2...Storage box 3...
Ventilation hole 4...Heating plate 5...Voltage application cable 6...Thermocouple conductor I...Optical hydrogen detector 8,! 1.10... Optical fiber cable agent Patent attorney Nori Ken Chika Yudo Hirofumi Mitsumata Figure 1] 5 Figure 3 Figure 4
Claims (1)
納箱と、温度制御手段を具備して上記収納箱内に設けら
れた熱板と、この熱板に密着させて設けられた光学式水
素検出器と、上記原子炉格納容器の器壁を貫通して上記
光学式水素検出器に接続される光伝送手段とを有する原
子炉格納容器内の水素濃度測定装置。 ２、上記光学式水素検出器に導波路型水素センサを用い
てなる特許請求の範囲第１項記載の原子炉格納容器内の
水素濃度測定装置。[Claims] 1. A storage box having ventilation means and installed in the reactor containment vessel, a heating plate equipped with temperature control means and installed in the storage box, and Measurement of hydrogen concentration in a reactor containment vessel having an optical hydrogen detector provided in close contact with each other and an optical transmission means penetrating a wall of the reactor containment vessel and connected to the optical hydrogen detector. Device. 2. The hydrogen concentration measuring device in a reactor containment vessel according to claim 1, which uses a waveguide type hydrogen sensor as the optical hydrogen detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61084226A JPS62240898A (en) | 1986-04-14 | 1986-04-14 | Hydrogen-concentration measuring device in nuclear-reactor container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61084226A JPS62240898A (en) | 1986-04-14 | 1986-04-14 | Hydrogen-concentration measuring device in nuclear-reactor container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62240898A true JPS62240898A (en) | 1987-10-21 |
Family
ID=13824562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61084226A Pending JPS62240898A (en) | 1986-04-14 | 1986-04-14 | Hydrogen-concentration measuring device in nuclear-reactor container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62240898A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013146536A1 (en) * | 2012-03-27 | 2013-10-03 | 三菱重工業株式会社 | Hydrogen concentration measuring instrument, and control system |
| JP2019086394A (en) * | 2017-11-07 | 2019-06-06 | 日立Ｇｅニュークリア・エナジー株式会社 | Hydrogen concentration measurement system |
-
1986
- 1986-04-14 JP JP61084226A patent/JPS62240898A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013146536A1 (en) * | 2012-03-27 | 2013-10-03 | 三菱重工業株式会社 | Hydrogen concentration measuring instrument, and control system |
| JP2013205097A (en) * | 2012-03-27 | 2013-10-07 | Mitsubishi Heavy Ind Ltd | Hydrogen concentration measuring instrument and control system |
| JP2019086394A (en) * | 2017-11-07 | 2019-06-06 | 日立Ｇｅニュークリア・エナジー株式会社 | Hydrogen concentration measurement system |
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