JPS6146450Y2 - - Google Patents
Info
- Publication number
- JPS6146450Y2 JPS6146450Y2 JP1979047542U JP4754279U JPS6146450Y2 JP S6146450 Y2 JPS6146450 Y2 JP S6146450Y2 JP 1979047542 U JP1979047542 U JP 1979047542U JP 4754279 U JP4754279 U JP 4754279U JP S6146450 Y2 JPS6146450 Y2 JP S6146450Y2
- Authority
- JP
- Japan
- Prior art keywords
- heating
- temperature
- detector
- sample liquid
- flow rate
- 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
Links
- 238000001816 cooling Methods 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 18
- 239000012535 impurity Substances 0.000 claims description 16
- 230000007423 decrease Effects 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 16
- 238000010586 diagram Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 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 Analyzing Materials Using Thermal Means (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Description
【考案の詳細な説明】
本考案は液体中に含まれる不純物の濃度を測定
する装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an apparatus for measuring the concentration of impurities contained in a liquid.
たとえば、高速増殖形原子炉においては、炉心
で発生した熱を外部へ取り出すための媒質として
液体ナトリウムで代表される液体金属を使用して
いる。このような目的に使用される液体金属は、
それに含まれる不純物の濃度が増すと、熱伝達材
としての機能が損なわれ使用に供し難いものとな
る。 For example, in a fast breeder nuclear reactor, a liquid metal such as liquid sodium is used as a medium for extracting heat generated in the reactor core to the outside. Liquid metals used for such purposes are
When the concentration of impurities contained in it increases, its function as a heat transfer material is impaired, making it difficult to use.
したがつて、上記のような目的に液体金属を使
用する場合には、何らかの手段で常時あるいは定
期的に不純物の濃度を測定し、この結果に基いて
速やかに対策を講じる必要がある。 Therefore, when using liquid metals for the above purposes, it is necessary to constantly or periodically measure the concentration of impurities by some means, and to take prompt measures based on the results.
ところで、液体金属中の不純物濃度を測定する
装置としては、従来、種々知られているが、その
中でプラツキング計と呼称されている装置があ
る。この装置は不純物の溶解度が温度に依存する
現象を利用して測定するようにしたもので、具体
的には第１図に示すように構成されている。 By the way, various devices for measuring the concentration of impurities in liquid metal have been known in the past, and among them there is a device called a plugging meter. This device is designed to measure the solubility of impurities by utilizing the phenomenon that it depends on temperature, and is specifically constructed as shown in FIG. 1.
すなわち、図中１は管路であり、この管路１内
に図示しないポンプを介して試料液体金属を通流
させる。管路１内にはこの管路１の通流断面積を
局部的に小さくする絞り機構２が設けてあり、ま
た上記絞り機構２の上流側には管路１内を通流す
る液体金属を選択的に加熱・冷却する加熱冷却装
置３が設けてある。加熱冷却装置３は、たとえば
管路１の周囲に配設された電気ヒータ４と、管路
１を空冷する送風機５とで構成されている。ま
た、絞り機構２と加熱冷却装置３との間には通流
する液体金属の温度を検出する温度検出器６が設
けてあり、さらに絞り機構２の下流には電磁流量
計で代表される流量検出器７が設けてある。そし
て、流量検出器７の出力信号は増減検出器８に導
入される。この増減検出器８は、流量検出器７の
出力が増加する方向へ変化したときには出力P1を
送出し、また減少する方向へ変化したときには出
力P2を送出し、これら出力P1，P2は切換制御器９
に導入される。切換制御器９は信号P1が与えられ
ると送風機５を付勢し、また信号P2が与えられる
と電気ヒータ４だけを付勢するように構成されて
いる。 That is, numeral 1 in the figure is a conduit, and a sample liquid metal is passed through the conduit 1 via a pump (not shown). A constriction mechanism 2 is provided in the conduit 1 to locally reduce the flow cross-sectional area of the conduit 1, and on the upstream side of the constriction mechanism 2, the liquid metal flowing through the conduit 1 is A heating and cooling device 3 for selectively heating and cooling is provided. The heating and cooling device 3 includes, for example, an electric heater 4 disposed around the conduit 1 and a blower 5 that cools the conduit 1 with air. Furthermore, a temperature detector 6 is provided between the throttle mechanism 2 and the heating/cooling device 3 to detect the temperature of the flowing liquid metal, and downstream of the throttle mechanism 2 there is a flow rate sensor 6 represented by an electromagnetic flowmeter. A detector 7 is provided. The output signal of the flow rate detector 7 is then introduced into an increase/decrease detector 8. This increase/decrease detector 8 sends out an output P 1 when the output of the flow rate detector 7 changes in an increasing direction, and sends out an output P 2 when it changes in a decreasing direction, and these outputs P 1 , P 2 is switching controller 9
will be introduced in The switching controller 9 is configured to energize the blower 5 when the signal P 1 is applied, and to energize only the electric heater 4 when the signal P 2 is applied.
しかして、この装置は次のようにして不純物濃
度を測定するようにしている。すなわち、数100
℃の液体金属を管路１内に通流させている状態
で、まず送風機５を作動させる。送風機５が作動
すると、絞り機構２を通過する液体金属は徐々に
冷却される。今、液体金属中に不純物が含まれて
いるものとすると、この不純物の飽和溶解温度よ
り僅かに低い温度まで液体金属が冷却されると、
過飽和分が絞り機構２の内面に析出される。この
ため、流量が減少する。このように流量が今まで
より減少すると、これを増減検出器８が検出し、
出力P2を送出する。この結果、切換制御器９は、
送風機５の付勢を停止し、こんどは電気ヒータ４
だけを付勢する。こうなると、絞り機構２を通過
する液体金属の温度が上昇し、これに伴なつて絞
り機構２の内面に析出されていた不純物が溶解す
る。溶解すると流量が増加する。流量が増加する
と、この変化を増減検出器８が検出し、出力P1を
送出する。この結果、再び送風機５が付勢され
る。以後上述した動作が繰り返えされる。したが
つて、絞り機構２を通過する液体金属の温度は、
そのときに含まれる不純物の飽和溶解温度近辺を
上下に変化する。 Therefore, this device measures the impurity concentration in the following manner. i.e. number 100
While the liquid metal at ℃ is flowing through the pipe 1, the blower 5 is first operated. When the blower 5 operates, the liquid metal passing through the throttle mechanism 2 is gradually cooled. Now, assuming that the liquid metal contains impurities, when the liquid metal is cooled to a temperature slightly lower than the saturation dissolution temperature of this impurity,
The supersaturated portion is deposited on the inner surface of the throttle mechanism 2. Therefore, the flow rate decreases. When the flow rate decreases from before, the increase/decrease detector 8 detects this,
Send out output P 2 . As a result, the switching controller 9
Stop the energization of the blower 5, and then turn on the electric heater 4.
energize only. When this happens, the temperature of the liquid metal passing through the throttle mechanism 2 increases, and the impurities deposited on the inner surface of the throttle mechanism 2 are dissolved accordingly. When dissolved, the flow rate increases. When the flow rate increases, the increase/decrease detector 8 detects this change and sends out an output P1 . As a result, the blower 5 is energized again. Thereafter, the above-described operations are repeated. Therefore, the temperature of the liquid metal passing through the throttle mechanism 2 is
At that time, it changes up and down around the saturated solubility temperature of the impurities included.
ここでどの点の温度を採用するかによつて、実
際の不純物濃度とは異なつた結果が得られること
になるため、一般に、第２図に示すように流量が
減少開始する時点における温度T1と流量が増加
開始する時点における温度T2とを求めＴ１＋Ｔ２／２な
る計算を行ない、実際の不純物の飽和容解温度に
より近い温度を求めるようにしている。しかし、
前記飽和溶解温度近辺を上下に変化する絞り機構
２を通過する液体金属の温度変化は冷却用送風機
によつて空冷されるため冷却量が一定の場合は液
体金属温度と冷却空気温度差によつて一定になら
ず、通過液体金属温度が低いほど、その変化はゆ
るやかになる。なお、第３図を参照のこと。この
ため前記T1とT2の平均値と飽和溶解温度の差が
一定にならず誤差が一定しないという欠点が生ず
る。また、飽和溶解温度が低くなると、流量変化
の感度が減少する欠点が生ずる。 Depending on which temperature point is adopted, a result that differs from the actual impurity concentration will be obtained, so in general, the temperature T 1 at the point when the flow rate starts to decrease as shown in Figure 2. and the temperature T 2 at the time when the flow rate starts to increase, and calculate T 1 +T 2 /2 to find a temperature closer to the actual impurity saturation solubility temperature. but,
The temperature change of the liquid metal passing through the aperture mechanism 2, which changes up and down around the saturation melting temperature, is caused by the difference between the liquid metal temperature and the cooling air temperature when the cooling amount is constant because it is air-cooled by the cooling blower. It is not constant, and the lower the passing liquid metal temperature, the more gradual the change. Please refer to Figure 3. For this reason, there arises a drawback that the difference between the average value of T 1 and T 2 and the saturated melting temperature is not constant and the error is not constant. Furthermore, when the saturation dissolution temperature becomes low, there is a drawback that the sensitivity to changes in flow rate decreases.
本考案は、このような事情に鑑みてなされたも
ので、その目的とするところは、測定精度の向上
化が図れる不純物濃度測定装置を提供するにあ
る。 The present invention was devised in view of these circumstances, and its purpose is to provide an impurity concentration measuring device that can improve measurement accuracy.
以下、本考案に係る不純物濃度測定装置の一実
施例を第４図から第６図を参照しながら説明す
る。 Hereinafter, one embodiment of the impurity concentration measuring device according to the present invention will be described with reference to FIGS. 4 to 6.
第４図は本考案に係る装置の構成を示してい
る。すなわち、第４図において、符号１は試料液
体を通流させる管路で、この管路１内に前記管路
１内の通流断面積を局部的に小さくする絞り機構
２が設けられている。 FIG. 4 shows the configuration of the device according to the present invention. That is, in FIG. 4, reference numeral 1 denotes a conduit through which a sample liquid flows, and a constriction mechanism 2 is provided within this conduit 1 to locally reduce the flow cross-sectional area within the conduit 1. .
この絞り機構２の上流側には前記試料液体を選
択的に加熱または冷却する加熱冷却装置３が設け
られている。前記絞り機構２を通過する直前の管
路１内には前記試料液体の温度を検出する温度検
出器６が設けられている。また前記絞り機構２を
通過した前記試料液体の流量を検出する流量検出
器７が前記絞り機構２の下流側管路１の表面に設
けられている。前記加熱冷却装置３には加熱また
は冷却量を調整する送風機５と電気ヒータ４が設
けられている。前記温度検出器６の出力信号は関
数発生器１１に入力される。この関数発生器１１
の出力信号は前記送風機５を駆動するための送風
機電源１０に入力される。この送風機電源１０に
は前記流量検出器７からの出力信号を増減検出器
８から切換制御器９を通して入力する出力増加方
向Ｐ１の信号系統が設けられている。また増減検
出器８の減少方向出力信号Ｐ２を前記切換制御器
９を通して前記加熱冷却装置３内の電気ヒータ４
へ入力する出力減少方向信号系統が設けられてい
る。 Upstream of this aperture mechanism 2, a heating/cooling device 3 is provided that selectively heats or cools the sample liquid. A temperature detector 6 for detecting the temperature of the sample liquid is provided in the pipe line 1 immediately before passing through the aperture mechanism 2. Further, a flow rate detector 7 for detecting the flow rate of the sample liquid that has passed through the aperture mechanism 2 is provided on the surface of the conduit 1 on the downstream side of the aperture mechanism 2 . The heating/cooling device 3 is provided with a blower 5 and an electric heater 4 for adjusting the amount of heating or cooling. The output signal of the temperature detector 6 is input to a function generator 11. This function generator 11
The output signal is input to a blower power supply 10 for driving the blower 5. The blower power supply 10 is provided with a signal system in the output increasing direction P1 for inputting the output signal from the flow rate detector 7 from the increase/decrease detector 8 through the switching controller 9. Further, the decrease direction output signal P2 of the increase/decrease detector 8 is passed through the switching controller 9 to the electric heater 4 in the heating/cooling device 3.
A power reduction direction signal system is provided for input to the output power source.
本考案装置が従来装置と異なる点は温度検出器
６から送出される温度信号から、送風機の送風量
を変化させたことにある。なお、図中符号１３は
増幅器を示している。 The device of the present invention differs from conventional devices in that the amount of air blown by the blower is changed based on the temperature signal sent from the temperature detector 6. Note that the reference numeral 13 in the figure indicates an amplifier.
すなわち、関数発生器１１を設け、この関数発
生器１１に温度検出器６からの絞り機構流通試料
温度を入力し、第５図に表わすような冷却量出力
を作り、これを送風機電源１０に入力させ冷却量
を制御する。このようにして、第６図に示すよう
に不純物飽和溶解温度に対して冷却速度が一定に
なり、測定誤差の少ない安定した測定が行なえ
る。 That is, a function generator 11 is provided, and the temperature of the sample flowing through the throttling mechanism from the temperature detector 6 is input to the function generator 11 to produce a cooling amount output as shown in FIG. 5, which is input to the blower power supply 10. to control the amount of cooling. In this way, as shown in FIG. 6, the cooling rate becomes constant with respect to the impurity saturation dissolution temperature, and stable measurements with few measurement errors can be performed.
また、本考案により、前記冷却量のコントロー
ルを人手で行なつていた場合、省力化になる。 Further, according to the present invention, when the cooling amount is controlled manually, labor can be saved.
以上説明したように本考案は冷却量をコントロ
ールしてプラグ温度に対応して冷却加熱速度が変
化するのを防止するとともにオリフイス部の温度
を関数発生器に入力し、その出力で冷却量および
加熱量をコントロールすることにある。したがつ
て、冷却、加熱速度が安定になり測定誤差が減少
する。また自動的に冷却加熱速度がコントロール
されるので人手の省力化になる。さらに自動連続
式測定の場合のPIDコントロールが容易になるな
どの効果がある。 As explained above, the present invention controls the amount of cooling to prevent the cooling and heating rate from changing in response to the plug temperature, and also inputs the temperature of the orifice part to a function generator, and uses its output to determine the amount of cooling and heating. It's about controlling the amount. Therefore, the cooling and heating rates become stable and measurement errors are reduced. In addition, the cooling and heating speed is automatically controlled, which saves manpower. Furthermore, it has the effect of facilitating PID control in the case of automatic continuous measurement.
第１図は従来装置の構成説明図、第２図は同装
置の使用例を説明するための図、第４図は本考案
の一実施例の構成説明するための図、第３図は冷
却量一定の場合の絞り機構流通試料の温度に冷却
速度の関係図、第５図は絞り機構流通試料の温度
に対する関数発生器の出力の例図、第６図は本考
案を実施したときの絞り機構流通試料に対す冷却
速度の関係図である。
１……管路、２……絞り機構、３……加熱冷却
装置、４……電気ヒータ、５……送風機、６……
温度検出器、７……流量検出器、８……増減検出
器、９……切換制御器、１０……送風機電源、１
１……関数発生器。
Fig. 1 is an explanatory diagram of the configuration of a conventional device, Fig. 2 is a diagram to explain an example of the use of the same device, Fig. 4 is a diagram to explain the configuration of an embodiment of the present invention, and Fig. 3 is a diagram for explaining the configuration of an embodiment of the present invention. A diagram of the relationship between the temperature of the sample flowing through the throttle mechanism and the cooling rate when the amount is constant. Figure 5 is an example of the output of the function generator versus the temperature of the sample flowing through the throttle mechanism. Figure 6 is the diagram of the flow rate when the present invention is implemented. FIG. 3 is a diagram showing the relationship between the cooling rate and the mechanical circulation sample. DESCRIPTION OF SYMBOLS 1...Pipeline, 2...Aperture mechanism, 3...Heating/cooling device, 4...Electric heater, 5...Blower, 6...
Temperature detector, 7...Flow rate detector, 8...Increase/decrease detector, 9...Switching controller, 10...Blower power supply, 1
1...Function generator.
Claims (1)
けられ前記管路内の通流断面積を局部的に小さく
する絞り機構と、この絞り機構の上流側に設けら
れ前記試料液体を選択的に加熱または冷却する加
熱冷却装置と、前記絞り機構を通過する直前の前
記試料液体の温度を検出する温度検出器と、前記
絞り機構を通過した前記試料液体の流量を検出す
る流量検出器と、前記加熱冷却装置の加熱または
冷却量を調整する送風機と、前記温度検出器の出
力信号を入力する関数発生器と、この関数発生器
の出力信号を入力する送風機電源と、この送風機
電源に前記流量検出器からの出力信号を増減検出
器から切換制御器を通して入力する出力増加方向
信号系統と、前記切換制御器の出力信号を前記加
熱冷却装置の加熱側へ入力する出力減少方向信号
系統とを具備したことを特徴とする不純物濃度測
定装置。 A conduit through which a sample liquid flows; a throttle mechanism provided within the conduit to locally reduce a flow cross-sectional area within the conduit; and a constriction mechanism provided upstream of the constriction mechanism to select the sample liquid. a heating/cooling device that directly heats or cools the sample liquid; a temperature detector that detects the temperature of the sample liquid immediately before it passes through the aperture mechanism; and a flow rate detector that detects the flow rate of the sample liquid that has passed through the aperture mechanism. , a blower for adjusting the heating or cooling amount of the heating/cooling device; a function generator for inputting the output signal of the temperature sensor; a blower power source for inputting the output signal of the function generator; an output increasing direction signal system for inputting the output signal from the flow rate detector from the increase/decrease detector through the switching controller; and an output decreasing direction signal system for inputting the output signal of the switching controller to the heating side of the heating/cooling device. An impurity concentration measuring device characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979047542U JPS6146450Y2 (en) | 1979-04-12 | 1979-04-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979047542U JPS6146450Y2 (en) | 1979-04-12 | 1979-04-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55147658U JPS55147658U (en) | 1980-10-23 |
| JPS6146450Y2 true JPS6146450Y2 (en) | 1986-12-27 |
Family
ID=28929598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979047542U Expired JPS6146450Y2 (en) | 1979-04-12 | 1979-04-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6146450Y2 (en) |
-
1979
- 1979-04-12 JP JP1979047542U patent/JPS6146450Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55147658U (en) | 1980-10-23 |
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