JPS6194118A - Temperature controller - Google Patents
Temperature controllerInfo
- Publication number
- JPS6194118A JPS6194118A JP59215131A JP21513184A JPS6194118A JP S6194118 A JPS6194118 A JP S6194118A JP 59215131 A JP59215131 A JP 59215131A JP 21513184 A JP21513184 A JP 21513184A JP S6194118 A JPS6194118 A JP S6194118A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- control device
- heated
- preheating
- electric heater
- 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
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/1928—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperature of one space
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
Abstract
Description
【発明の詳細な説明】
[発明の技術分野]
本発明は、温度制御装置、特に高速増殖炉におけるナト
リウム機器、配管、弁等の予熱制御に設置する湿度制御
装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a temperature control device, particularly a humidity control device installed for preheating control of sodium equipment, piping, valves, etc. in a fast breeder reactor.
[発明の技術的背瑣とその問題点]
高速増殖炉では、冷却材として通常波体すトリウムが使
用されている。ナトリウムは98℃以下では固体である
ため、通常200℃以上に加熱して液体ナトリウムとし
て使用されている。ナトリウム自体はクンブタンクで加
熱されるが、原子炉名付容器や機器、配管等のナトリウ
ムを充填・循環する部分はすトリウムの充填状態に応じ
所定の変化率で均一に加熱していく必要がある。この場
合、加熱か11としては通常電気ヒータが用いられる。[Technical background of the invention and its problems] In fast breeder reactors, wave body storium is usually used as a coolant. Since sodium is solid at temperatures below 98°C, it is usually heated to above 200°C and used as liquid sodium. The sodium itself is heated in the Kumbh tank, but the parts that are filled and circulated with sodium, such as reactor containers, equipment, and piping, must be heated uniformly at a predetermined rate of change depending on the state of thorium filling. . In this case, an electric heater is usually used as the heating element 11.
そして、この電気ヒータへの通電はナイリスタ点弧角制
御等で行う場合もあるが、通常は開閉器によるオン・オ
フ制御により行なわれている。The electric heater is energized in some cases by Nyristor firing angle control, but usually by on/off control using a switch.
次に、従来の温度制御装置の構成を第3図を参照して説
明する。配管1等の被加熱物には、温度検出器2及び電
気ヒータ3が設置されており、この上にさらに保温材4
を設けている iF1度検度検出器上って検出された温
度計測IPVは、予熱制御装置5に入力され温度設定値
S■と比較演算される。そして、温度設定値SVと温度
計測値P■との減緯値5v−pvをオンオフ制御部6に
入力し、SV≧pvの場合はMVオン、sv<pvの場
合はMオフなるオンオフ制御信号MVを予熱電源装置7
に入力して、半導体式のリレー5SR(Solid
5tate Re1ay) 8をオンオフさせる。Next, the configuration of a conventional temperature control device will be explained with reference to FIG. A temperature detector 2 and an electric heater 3 are installed on the heated object such as the piping 1, and a heat insulating material 4 is further installed on top of the temperature detector 2 and electric heater 3.
The temperature measurement IPV detected by the iF1 degree detection detector is input to the preheating control device 5 and is compared with the temperature setting value S■. Then, the declination value 5v-pv between the temperature setting value SV and the temperature measurement value P■ is inputted to the on-off control section 6, and an on-off control signal that turns on MV when SV≧pv and turns off M when sv<pv MV preheating power supply device 7
and connect the semiconductor type relay 5SR (Solid
5tate Relay) 8 is turned on and off.
このリレー5SR8のオンオフに応じて電気ヒータ3に
供給される電源を開閉する。第3図は1つの温度制御ル
ープを図示しているが、温度制御3D装置は通常複数の
温度検出器2から温度計測値PVを入力し、複数の電気
ヒータ3の制御を行なっている。The power supplied to the electric heater 3 is opened and closed in accordance with the on/off state of this relay 5SR8. Although FIG. 3 illustrates one temperature control loop, the temperature control 3D device normally inputs temperature measurement values PV from a plurality of temperature detectors 2 and controls a plurality of electric heaters 3.
ところで、予熱制御装置5としてはマイクロプロセッサ
を使用する場合を示しており、オンオフ制御信号MVは
マイクロプロセッサのディジタル出力9となる。このデ
ィジタル出力9は予熱電源装置7に収納された5SR8
の入力側に伝えられ、5SR8をオンオフすることによ
り、電気ヒータ3に供給される電源を開閉する。Incidentally, a case is shown in which a microprocessor is used as the preheating control device 5, and the on/off control signal MV becomes the digital output 9 of the microprocessor. This digital output 9 is a 5SR8 stored in the preheating power supply device 7.
By turning on and off 5SR8, the power supplied to the electric heater 3 is opened and closed.
しかしながら、上記のごとき構成の温度制御装置におい
て、予熱制御装置5が故障するとディジタル出力9が失
われ、予熱運転が継続できなくなる。この場合、特に小
口径配管では放熱が大きいため温度が速く低下し、ナト
リウム凍結を生ずる恐れがある。したがって、このよう
な不具合を解決する手段として予熱制御装置5を多重化
するとか、あるいはバックアップ用の制御器を設けると
かいう対策があるが、いずれもスペース及び物量の増加
を招くという問題がある。また、予熱電源装置7から強
制的に電気ヒータ3に供給される電力を印加するという
対策も考えられるが温度検出器2の信号が失われている
ため無制御状態であり、逆に配管1等の温度がF昇しす
ぎる恐れが生ずるというように別の問題がある。However, in the temperature control device configured as described above, if the preheating control device 5 breaks down, the digital output 9 will be lost, making it impossible to continue the preheating operation. In this case, especially in small-diameter pipes, the heat radiation is large, so the temperature decreases quickly, and there is a risk that sodium may freeze. Therefore, as a means to solve this problem, there are measures such as multiplexing the preheating control device 5 or providing a backup controller, but both methods have the problem of increasing the space and amount of materials. Another possible countermeasure is to forcibly apply power supplied to the electric heater 3 from the preheating power supply device 7, but since the signal from the temperature detector 2 is lost, there is no control, and vice versa. There is another problem, such as the possibility that the temperature of
[弁明の目的]
本発明は、上記事情に鑑みてなされたもので、その目的
は、予熱制御装置の故障時においても予熱電源装置によ
って配管等の被加熱物の温度保持ができてナトリウムの
凍結を防止することができる簡単な構成の温度制御3D
装置を提供することにある。[Purpose of Defense] The present invention has been made in view of the above circumstances, and its purpose is to maintain the temperature of heated objects such as piping by the preheating power supply device even when the preheating control device fails, thereby preventing the freezing of sodium. Temperature control 3D with simple configuration that can prevent
The goal is to provide equipment.
[発明の概要〕
本発明は、上記目的を達成するために、被加熱物に電気
ヒータと温度検出器を設置し、前記温度検出器によって
検出された前記被加熱物の温度計測値を予熱制御装置に
入力してこの温度計測値と予じめ決められた温度設定値
とを比較演募して、その温度差に応じてオンオフ制御信
号を前記電気ヒータの開閉賛同に与えるように(を成し
てなる温度制御装置において、前記被加熱物にさらに正
特性の感熱抵抗素子を設置して、前記予熱制御装置故障
時に前記被加熱物が前記温度設定値以下または前記温度
設定値以下でない温度になると、それに応じて前記感熱
抵抗素子が変化してオンまたはオフの制御信号を前記開
閉装置に与えて前記被加熱物の温度を前記温度設定値に
維持するように(1へ成したものである。被加熱物とし
てはは高速増殖炉のナトリウム機器、配管、弁であり、
また、正の温度特性をもつ感熱抵抗素子はチタン酸バリ
ウム等の組成をもつ半導体である。[Summary of the Invention] In order to achieve the above object, the present invention installs an electric heater and a temperature detector on an object to be heated, and performs preheating control on the temperature measurement value of the object to be heated detected by the temperature sensor. This temperature measurement value is input into the device and compared with a predetermined temperature set value, and an on/off control signal is given to open/close the electric heater according to the temperature difference. In the temperature control device, a heat-sensitive resistance element with a positive characteristic is further installed on the object to be heated, so that when the preheating control device fails, the object to be heated reaches a temperature that is below the temperature setting value or not below the temperature setting value. Then, the heat-sensitive resistance element changes accordingly to give an ON or OFF control signal to the switching device to maintain the temperature of the heated object at the temperature set value (as described in 1). The objects to be heated are the sodium equipment, piping, and valves of the fast breeder reactor.
Further, the heat-sensitive resistance element having positive temperature characteristics is a semiconductor having a composition such as barium titanate.
[発明の実施例] 本発明の一実施例を図面を参照して説明する。[Embodiments of the invention] An embodiment of the present invention will be described with reference to the drawings.
第1図は本発明の一実施例の回路構成図を示したもので
、同図に示すように、配管10等の被加熱物には温度検
出器11、電気ヒータ12の他に温度上昇とともに抵抗
値が増大する正の温度特性を待った感熱抵抗素子(p
ositive T cmperatureCoef
ficient Thermistor 、以下PT
Cという)13が設置されその上を保温材14で覆って
いる。PT C13はたとえばチタン酸−バリウム等の
組成を持つ半導体であり、第2図に示すような曲線をも
つ特性を持っている。すなわら同図ににおいてPTCの
特性曲線は横軸を温度T、縦軸を抵抗Rで表現したもの
で、温度が低いと抵抗が小さく、温度があるしきい値T
Sを越えると急激に抵抗が増加するという特性を有する
。PTC13の信号は予熱電源装:G15に入力され、
電流まわりこみ防止のダイオード16を経て、S S
R17の入力側に接続されており、電気ヒータ12の電
源開閉が可能な+M成としている。そして、P T C
13には直列にリレー18が入れられており、これは予
熱制御装置19の故障時に開となる。また、温度検出器
11によって検出された温度計測1itf P Vは、
予熱制御装置19に入力され温度設定値SVと比較演算
される。そして、減算値5v−pvはオンオフ制御部2
1に入力され、下記のオンオフ制御信号MVが出力され
る。すなわち、S■≧PVの場合はMVオン、SV<P
Vの場合はMVオフなるオンオフ制御信号MVが予熱電
源装置15に入力され、半導体式のリレー5SR17を
オンオフし、電気ヒータ12に供給される電源を開閉し
て配管10等の被加熱物を温度設定値S■に保つように
構成している。FIG. 1 shows a circuit configuration diagram of an embodiment of the present invention. As shown in the figure, in addition to a temperature detector 11 and an electric heater 12, a temperature detector 11 and an electric heater 12 are installed on objects to be heated such as piping 10. A heat-sensitive resistance element (p
ositive T cmperatureCoef
ficient Thermistor, hereafter PT
(referred to as C) 13 is installed, and the top thereof is covered with a heat insulating material 14. PTC13 is a semiconductor having a composition such as barium titanate, and has characteristics having a curve as shown in FIG. In other words, in the same figure, the PTC characteristic curve is expressed by the temperature T on the horizontal axis and the resistance R on the vertical axis, where the lower the temperature, the lower the resistance, and the lower the temperature, the lower the resistance, and the lower the temperature, the lower the resistance.
It has a characteristic that the resistance increases rapidly when S is exceeded. The signal of PTC13 is input to preheating power supply unit: G15,
Through the diode 16 to prevent current from flowing in, S
It is connected to the input side of R17, and has a +M configuration that can open and close the power supply for the electric heater 12. And PTC
13 is connected in series with a relay 18, which opens when the preheating control device 19 fails. Moreover, the temperature measurement 1itf P V detected by the temperature detector 11 is
It is input to the preheating control device 19 and compared with the temperature set value SV. The subtraction value 5v-pv is the on-off control unit 2.
1, and the following on/off control signal MV is output. In other words, if S≧PV, MV is on, and SV<P
In the case of V, the on/off control signal MV, in which MV is turned off, is input to the preheating power supply device 15, which turns on and off the semiconductor type relay 5SR17, opens and closes the power supply supplied to the electric heater 12, and changes the temperature of the heated object such as the piping 10. It is configured to maintain the set value S■.
次に、本実施例の作用について説明する。Next, the operation of this embodiment will be explained.
高速増殖炉の予熱運転時にはナトリウム機器、弁、配管
10等の被加熱物は電気ヒータ12により前述したよう
に所定の温度に加熱されている。ここで予熱制御装置1
9が故障するとディジタル出力20が失われる。予熱制
御装置19はマイクロプロセッサの自己診i!!i等に
より故障が検知され、予熱電源装置15のリレー18が
閉となる。一方、S S R17はオフとなるため電気
ヒータに電力は供給されず、配管10等の温度は降下し
てゆく。この時点では配管10等の温度は第4図のTs
以上であるためPTC13の抵抗は大きく、従ってP
T C13には電流は流れない。しかし配管10等の温
度がさらに降下してTSとなると、P T C13の抵
抗は急激に低下し、P T C13を含む回路に電流が
流れるので、5SR17がオンとなり、電気ヒータ12
に電力が供給されることになる。電気ヒータ12に電力
が供給されて配管10等の温度が上がり今度はその温度
がTs以上になると、P T C13の抵抗は急激に増
加するので、PTC13に電流は流れなくなり、S S
R17はオフとなる。従って、電気ヒータ12への電
力は断となり、配管10等の温度は下がってゆく。この
ように予熱制御装置19の故障時には、P T C13
の機能により配管10′6の温度はTSという温度に保
持されナトリウムの凍結が防止されることになる。During preheating operation of the fast breeder reactor, objects to be heated such as sodium equipment, valves, piping 10, etc. are heated to a predetermined temperature by the electric heater 12 as described above. Here, preheating control device 1
If 9 fails, the digital output 20 will be lost. The preheating control device 19 is a microprocessor self-diagnosis i! ! A failure is detected by i, etc., and the relay 18 of the preheating power supply device 15 is closed. On the other hand, since the SSR 17 is turned off, no power is supplied to the electric heater, and the temperature of the pipe 10 and the like decreases. At this point, the temperature of the pipe 10, etc. is Ts in Figure 4.
Because of the above, the resistance of PTC13 is large, so P
No current flows through T C13. However, when the temperature of the piping 10, etc. further decreases to TS, the resistance of the PTC 13 rapidly decreases and current flows through the circuit including the PTC 13, so the 5SR17 turns on and the electric heater 12
Electricity will be supplied to the When electric power is supplied to the electric heater 12 and the temperature of the piping 10 etc. rises and the temperature exceeds Ts, the resistance of the PTC 13 increases rapidly, so no current flows through the PTC 13, and the S S
R17 is turned off. Therefore, the power to the electric heater 12 is cut off, and the temperature of the pipe 10 and the like decreases. In this way, when the preheating control device 19 fails, the PTC13
By this function, the temperature of the pipe 10'6 is maintained at the temperature TS, and freezing of sodium is prevented.
ここでPTC13としては、温度Tsがナトリウムの凍
結温度よりも幾分高い素子に選定しておくことが必要で
ある。Here, as the PTC 13, it is necessary to select an element whose temperature Ts is somewhat higher than the freezing temperature of sodium.
また、本実施例によれば従来の温度制御装置に対する追
加設漏はP T C13とそのケーブル類だけを追加の
みで所期の目的が達成されるので、予熱制御装置19の
多重化等と比較すると非常に簡単かつ経済的である。In addition, according to this embodiment, the desired purpose can be achieved by adding only the PTC 13 and its cables to the conventional temperature control device, so compared to multiplexing the preheating control device 19, etc. It is very easy and economical.
さらにPTC13は検出器と調節計の礪能を合は持って
おり、配管10′8はほぼ一定の温度に保たれ、制御性
が良い。Furthermore, the PTC 13 has both the capabilities of a detector and a controller, and the temperature of the pipe 10'8 is maintained at a substantially constant temperature, providing good controllability.
なお、上記実施例では予熱制御装置としてマイクロプロ
セッサを使用した場合で説明しているが、アナログ調節
計を使用した場合も同様に適用できるし、また、上記実
施例では予熱電源装置の電源開閉器としてはSSRを使
用した場合で説明しているが、電磁接触器を使用した場
合でも同様に適用できることは勿論である。In addition, although the above embodiment describes the case where a microprocessor is used as the preheating control device, it can be similarly applied to the case where an analog controller is used. Although the explanation is given for the case where SSR is used, it goes without saying that it can be similarly applied even when an electromagnetic contactor is used.
[発明の効果コ
以上説明したように、本発明の温度制御装置によれば、
予熱制御装置の故障時においても高速y1殖炉における
ナトリウム機器、配管、弁等の鼎111保持ができ、ナ
トリウムの凍結を防止することができる。しかも、その
ための設備もPTCとそのケーブル類のみを追加するの
みでよいので、簡単な側14成でかつ制御性が非常によ
いというすぐれた効果を奏する。[Effects of the Invention] As explained above, according to the temperature control device of the present invention,
Even in the event of a failure of the preheating control device, the sodium equipment, piping, valves, etc. in the high-speed Y1 breeder furnace can be maintained, and freezing of sodium can be prevented. Moreover, since it is only necessary to add the PTC and its cables to the equipment for this purpose, it is possible to achieve the excellent effects of a simple 14-side configuration and very good controllability.
第1図は本発明の一実施例の構成図、第2図はPTCの
特性を示寸図、第3図は従来の温度制御装置の構成図で
ある。
10・・・配管
11・・・温度検出器
12・・・電気ヒータ
13・・・PTC
14・・・保)台材
15・・・予熱電源装置
16・・・ダイオード
17・・・5SR
18・・・リレー
19・・・予熱制御装:C゛1
21・・・オンオフ制御部
(7317)代理人 弁理士 則 近 憲 佑(ほか1
名)
第 1 図
D 14
第 2 図FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a dimensional diagram showing the characteristics of PTC, and FIG. 3 is a block diagram of a conventional temperature control device. 10...Piping 11...Temperature detector 12...Electric heater 13...PTC 14...Material 15...Preheating power supply device 16...Diode 17...5SR 18. ...Relay 19...Preheating control device: C゛1 21...On-off control section (7317) Agent: Patent attorney Noriyuki Chika (and 1 others)
Figure 1 D 14 Figure 2
Claims (3)
記温度検出器によって検出された前記被加熱物の温度計
測値を予熱制御装置に入力して該温度計測値と予じめ決
められた温度設定値とを比較演算して、その温度差に応
じてオンオフ制御信号を前記電気ヒータの開閉装置に与
えるように構成してなる温度制御装置において、前記被
加熱物にさらに正特性の感熱抵抗素子を設置して、前記
予熱制御装置故障時に前記被加熱物が前記温度設定値以
下または前記温度設定値以下でない温度になると、それ
に応じて前記感熱抵抗素子が変化してオンまたはオフの
制御信号を前記開閉装置に与えて前記被加熱物の温度を
前記温度設定値に維持するように構成したことを特徴と
する温度制御装置。(1) An electric heater and a temperature detector are installed on the object to be heated, and the temperature measurement value of the object to be heated detected by the temperature detector is inputted to the preheating control device and predetermined as the temperature measurement value. In the temperature control device, the temperature control device is configured to perform a comparison operation with a temperature set value obtained by the heating process, and to apply an on/off control signal to the opening/closing device of the electric heater according to the temperature difference. A heat-sensitive resistance element is installed, and when the preheating control device malfunctions and the temperature of the object to be heated falls below or below the temperature setting value, the heat-sensitive resistance element changes accordingly to turn on or off. A temperature control device characterized in that the temperature control device is configured to maintain the temperature of the object to be heated at the temperature setting value by applying a control signal to the opening/closing device.
弁である特許請求の範囲第1項記載の温度制御装置。(2) The objects to be heated are fast breeder reactor sodium equipment, piping,
The temperature control device according to claim 1, which is a valve.
ウム等の組成をもつ半導体である特許請求の範囲第1項
記載の温度制御装置。(3) The temperature control device according to claim 1, wherein the heat-sensitive resistance element having positive temperature characteristics is a semiconductor having a composition such as barium titanate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59215131A JPH0756609B2 (en) | 1984-10-16 | 1984-10-16 | Temperature control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59215131A JPH0756609B2 (en) | 1984-10-16 | 1984-10-16 | Temperature control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6194118A true JPS6194118A (en) | 1986-05-13 |
JPH0756609B2 JPH0756609B2 (en) | 1995-06-14 |
Family
ID=16667224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59215131A Expired - Lifetime JPH0756609B2 (en) | 1984-10-16 | 1984-10-16 | Temperature control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0756609B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5781618A (en) * | 1980-11-06 | 1982-05-21 | Fuji Electric Co Ltd | Temperature control system |
JPS58184602A (en) * | 1982-04-23 | 1983-10-28 | Hitachi Ltd | Preheating controller for fbr |
-
1984
- 1984-10-16 JP JP59215131A patent/JPH0756609B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5781618A (en) * | 1980-11-06 | 1982-05-21 | Fuji Electric Co Ltd | Temperature control system |
JPS58184602A (en) * | 1982-04-23 | 1983-10-28 | Hitachi Ltd | Preheating controller for fbr |
Also Published As
Publication number | Publication date |
---|---|
JPH0756609B2 (en) | 1995-06-14 |
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