JPS6356937B2 - - Google Patents
Info
- Publication number
- JPS6356937B2 JPS6356937B2 JP56097426A JP9742681A JPS6356937B2 JP S6356937 B2 JPS6356937 B2 JP S6356937B2 JP 56097426 A JP56097426 A JP 56097426A JP 9742681 A JP9742681 A JP 9742681A JP S6356937 B2 JPS6356937 B2 JP S6356937B2
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- pressure
- inert gas
- boundary
- gas supply
- 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
- 239000011261 inert gas Substances 0.000 claims description 32
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 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 claims description 13
- 229910052708 sodium Inorganic materials 0.000 claims description 13
- 239000011734 sodium Substances 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 60
- 229910052786 argon Inorganic materials 0.000 description 30
- 239000007789 gas Substances 0.000 description 30
- 238000001514 detection method Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/223—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for pipe joints or seals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Joints Allowing Movement (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、バウンダリベローズとバツクアツプ
ベローズの二重構造のベローズを有するベローズ
継手において、バウンダリベローズ及びバツクア
ツプベローズの破損を検出するベローズ破損検出
装置に関する。Detailed Description of the Invention [Industrial Application Field] The present invention provides a bellows damage detection method for detecting damage to a boundary bellows and a back-up bellows in a bellows joint having a dual structure of a boundary bellows and a back-up bellows. Regarding equipment.
［従来の技術とその課題］
配管の熱膨張を吸収する管継手として一般にベ
ローズ継手が使用される。この場合ベローズに
は、内部流体の圧力の他、Ｘ，Ｙ，Ｚ軸方向の変
位が繰返し作用するので、構造強度上の弱点とな
り易い。[Prior art and its problems] Bellows joints are generally used as pipe joints that absorb thermal expansion of piping. In this case, the bellows is repeatedly subjected to displacement in the X, Y, and Z axis directions in addition to the pressure of the internal fluid, and therefore tends to be a weak point in terms of structural strength.
高速増殖炉では冷却材として一般に液体ナトリ
ウムを用いるが、万一ナトリウムが配管等からリ
ークした場合、火災の原因となつたり、あるいは
リーク量が大量になれば、冷却材喪失による原子
炉の事故が発生するので、これらを防止するた
め、原子炉を緊急停止しなければならないので、
プラントとして好ましくない。 Fast breeder reactors generally use liquid sodium as a coolant, but if sodium were to leak from piping, it could cause a fire, or if the amount of leakage was large enough, it could cause a reactor accident due to loss of coolant. In order to prevent these occurrences, the reactor must be stopped urgently.
Not desirable as a plant.
［発明の目的］
本発明は、高速増殖炉の冷却系配管にベローズ
継手を用いる場合を想定し、ベローズ継手をバウ
ンダリベローズとバツクアツプベローズの二重構
造のベローズを有するベローズ継手となし、その
ベローズ継手のバウンダリベローズ，バツクアツ
プベローズのいずれが破損しても、これを速やか
に容易に検出できるベローズ破損検出装置を提供
することを目的とするものである。[Object of the Invention] The present invention assumes a case where a bellows joint is used in the cooling system piping of a fast breeder reactor, and the bellows joint is a bellows joint having a double structure of a boundary bellows and a back-up bellows. It is an object of the present invention to provide a bellows damage detection device that can quickly and easily detect damage to either the boundary bellows or the back-up bellows of a joint.
［課題を解決するための手段］
上記課題を解決するための本発明によるベロー
ズ破損検出装置は、バウンダリベローズとバツク
アツプベローズの二重構造のベローズを有するベ
ローズ継手に於いて、前記バウンダリベローズと
バツクアツプベローズとの間の空間に、不活性ガ
ス供給源，アキユムレータ，止め弁，調圧弁，止
め弁を順次有する不活性ガス供給系を接続し、該
不活性ガス供給系の調圧弁の下流に、止め弁，調
圧弁を順次有する不活性ガス排出系を分岐して設
け、この不活性ガス排出系の分岐部よりも上流で
不活性ガス供給系に圧力検出器を接続して設け、
該圧力検出器には前記不活性ガス供給系の調圧弁
及び不活性ガス排出系の調圧弁を開閉制御する制
御信号発生器及び圧力警報器を別々に電気的に接
続して設け、さらに前記バウンダリベローズとバ
ツクアツプベローズとの間の空間に接触型ナトリ
ウム検出器と温度検出器を設けて成るものであ
る。[Means for Solving the Problems] A bellows damage detection device according to the present invention for solving the above-mentioned problems is provided in a bellows joint having a bellows with a double structure of a boundary bellows and a back-up bellows. An inert gas supply system having an inert gas supply source, an accumulator, a stop valve, a pressure regulating valve, and a stop valve in this order is connected to the space between the rising bellows, and downstream of the pressure regulating valve of the inert gas supply system, A branched inert gas exhaust system having a stop valve and a pressure regulating valve in sequence is provided, and a pressure detector is connected to the inert gas supply system upstream of the branch of the inert gas exhaust system,
The pressure detector is provided with a control signal generator and a pressure alarm that control the opening and closing of the pressure regulating valve of the inert gas supply system and the pressure regulating valve of the inert gas discharge system, which are electrically connected separately, and further electrically connected to the boundary. A contact type sodium detector and a temperature detector are provided in the space between the bellows and the backup bellows.
［作用］
上記の如く構成された本発明のベローズ破損検
出装置は、原子力プラントの通常運転状態におい
ては、バウンダリベローズとバツクアツプベロー
ズとの間の空間に充填された不活性ガスの温度が
略一定で、温度変化に伴う圧力変化が少ないの
で、不活性ガス供給系の止め弁及び不活性ガス排
出系の止め弁が共に閉になされるので、ベローズ
の破損が生じれば、圧力検出器によつて検出され
た圧力信号によつて圧力警報器が作動し、圧力警
報が発せられ、圧力が低くなつていると、バツク
アツプベローズの破損、圧力が高くなつている
と、バウンダリベローズの破損が判る。またバウ
ンダリベローズの破損は、接触型ナトリウムリー
ク検出器によるナトリウムリークの検出によつて
も判る。[Function] The bellows damage detection device of the present invention configured as described above maintains a substantially constant temperature of the inert gas filled in the space between the boundary bellows and the back-up bellows during normal operation of a nuclear power plant. Since the pressure change due to temperature change is small, both the stop valve of the inert gas supply system and the stop valve of the inert gas discharge system are closed, so if the bellows is damaged, the pressure detector will detect it. The pressure alarm is activated by the detected pressure signal, and a pressure alarm is issued.If the pressure is low, the back-up bellows is damaged, and if the pressure is high, the boundary bellows is damaged. . Damage to the boundary bellows can also be determined by detecting sodium leaks using a contact type sodium leak detector.
原子力プラントの起動時には、ベローズ継手の
温度が上昇するので、不活性ガス供給系の止め弁
を閉とし、不活性ガス排出系の止め弁を開とし、
温度上昇による不活性ガスの膨張分を放出する。
原子力プラントの停止移行時には、ベローズ継手
の温度が降下するので、不活性ガス供給系の止め
弁を開とし、不活性ガス排出系の止め弁を閉と
し、温度降下による不活性ガスの収縮分を供給す
る。従つて、温度上昇時に圧力検出器より不活性
ガスの圧力の低下が検出されれば、バツクアツプ
ベローズの破損が検出され、温度降下時に圧力検
出器より不活性ガスの圧力の上昇が検出されれ
ば、バウンダリベローズの破損が検出される。 When starting up a nuclear power plant, the temperature of the bellows joint increases, so close the stop valve of the inert gas supply system, open the stop valve of the inert gas exhaust system,
Release the expansion of inert gas due to temperature rise.
When a nuclear power plant transitions to shutdown, the temperature of the bellows joint drops, so the stop valve of the inert gas supply system is opened and the stop valve of the inert gas exhaust system is closed to absorb the shrinkage of the inert gas due to the temperature drop. supply Therefore, if the pressure detector detects a drop in the inert gas pressure when the temperature rises, damage to the backup bellows is detected, and when the temperature drops, the pressure detector detects an increase in the inert gas pressure. For example, damage to the boundary bellows is detected.
［実施例］
本発明による二重構造のベローズ継手に於ける
ベローズ破損検出装置の一実施例を図によつて説
明すると、１はバウンダリベローズで、その外側
に同心状にバツクアツプベローズ２が設けられて
いる。この２つのベローズ１，２の両端はシエル
３，３′に接続されている。このシエル３，３′は
ピン４と接続リング５によつて接続され、ユニバ
ーサルジヨイント機構となつているジンバル型ベ
ローズ継手を構成している。６，６′はバウンダ
リベローズ１の内側にあつて流路を形成している
スリーブであり、７はベローズ継手と接合した配
管である。[Embodiment] An embodiment of the bellows damage detection device in a double structure bellows joint according to the present invention will be described with reference to the drawings. Reference numeral 1 denotes a boundary bellows, and a back-up bellows 2 is provided concentrically on the outside thereof. It is being Both ends of these two bellows 1, 2 are connected to shells 3, 3'. These shells 3, 3' are connected by a pin 4 and a connecting ring 5, and constitute a gimbal type bellows joint which is a universal joint mechanism. Reference numerals 6 and 6' are sleeves that are located inside the boundary bellows 1 and form a flow path, and 7 is a pipe connected to a bellows joint.
バウンダリベローズ１とバツクアツプベローズ
２との間の空間８には不活性ガスであるアルゴン
ガスが満たされている。この空間８には接触型ナ
トリウムリーク検出器９と温度検出器１０が連結
して設けられている。そしてさらに空間８にはア
ルゴンガス供給源２０，アキユムレータ１１，止
め弁１２，調圧弁１３，止め弁１６を順次有する
アルゴンガス供給系２１が接続され、該アルゴン
ガス供給系２１の調圧弁１３の下流に、止め弁１
４，調圧弁１５を順次有するアルゴンガス排出系
２２が分岐して設けられている。アルゴンガス排
出系２２の分岐部よりも上流で調圧弁１３よりも
下流でアルゴンガス供給系２１に圧力検出器１７
が接続して設けられている。この圧力検出器１７
には前記アルゴンガス供給系２１の調圧弁１３及
びアルゴンガス排出系２２の調圧弁１５を開閉制
御する制御信号発生器１８が電気的に接続して設
けられ、さらに圧力警報器１９が電気的に接続し
て設けられている。 A space 8 between the boundary bellows 1 and the backup bellows 2 is filled with argon gas, which is an inert gas. In this space 8, a contact type sodium leak detector 9 and a temperature detector 10 are connected and provided. Furthermore, an argon gas supply system 21 having an argon gas supply source 20 , an accumulator 11 , a stop valve 12 , a pressure regulating valve 13 , and a stop valve 16 in this order is connected to the space 8 . , stop valve 1
4. An argon gas exhaust system 22 having pressure regulating valves 15 in sequence is provided in a branched manner. A pressure detector 17 is installed in the argon gas supply system 21 upstream of the branch part of the argon gas exhaust system 22 and downstream of the pressure regulating valve 13.
are connected. This pressure detector 17
is electrically connected with a control signal generator 18 for controlling the opening and closing of the pressure regulating valve 13 of the argon gas supply system 21 and the pressure regulating valve 15 of the argon gas exhaust system 22, and furthermore, a pressure alarm 19 is electrically connected. are connected and provided.
次に上述の如く構成された実施例のベローズ破
損検出装置の作用について説明する。 Next, the operation of the bellows breakage detection device of the embodiment configured as described above will be explained.
先ず原子力プラントの通常運転状態において、
ベローズ継手のバウンダリベローズ１とバツクア
ツプベローズ２との間の空間８内にアルゴンガス
供給源２０より供給充填されたアルゴンガスの圧
力は、配管７内の熱媒体の圧力よりも低くし、し
かもバツクアツプベローズ２の外部の圧力よりも
高く設定し保持する。即ち、制御信号発生器１８
に、予め制御すべき圧力値を電気信号として設定
し、圧力検出器１７で検出された圧力信号を制御
信号発生器１８に送り、設定圧力に比べて圧力が
高ければ調圧弁１５を開とし、圧力が低ければ、
調圧弁１３を開として、空間８内のアルゴンガス
の圧力を設定圧に調節する。 First, under normal operating conditions of a nuclear power plant,
The pressure of the argon gas supplied from the argon gas supply source 20 into the space 8 between the boundary bellows 1 and the backup bellows 2 of the bellows joint is set to be lower than the pressure of the heat medium in the pipe 7, Set and maintain the pressure higher than the external pressure of the upper bellows 2. That is, the control signal generator 18
The pressure value to be controlled is set in advance as an electric signal, the pressure signal detected by the pressure detector 17 is sent to the control signal generator 18, and if the pressure is higher than the set pressure, the pressure regulating valve 15 is opened. If the pressure is low,
The pressure regulating valve 13 is opened to adjust the pressure of argon gas in the space 8 to the set pressure.
原子力プラントの通常運転状態において、バウ
ンダリベローズ１とバツクアツプベローズ２との
間の空間８に充填されたアルゴンガスの温度は略
一定であり、温度変化に伴う圧力変化が少ないの
で、アルゴンガス供給系２１の止め弁１３及びア
ルゴンガス排出系２２の止め弁１５が共に閉にな
される。この状態でベローズの破損が生じれば、
圧力検出器１７によつて検出された圧力信号によ
つて圧力警報器１９が作動し、圧力警報が発せら
れ、圧力が低くなつていると、バツクアツプベロ
ーズ２破損が判り、圧力が高くなつていると、バ
ウンダリベローズ１の破損が判る。また、バウン
ダリベローズ１の破損は、接触型ナトリウムリー
ク検出器９によるナトリウムリークの検出によつ
ても判る。圧力警報が発せられた場合、温度検出
器１０での温度の変化と圧力検出器１７での圧力
の変化の記録を検討することによつて、それがベ
ローズの破損によるものか、温度変化によるもの
か判定できる。温度変化による場合は止め弁１２
又は止め弁１４を開とし、調圧弁１３又は調圧弁
１５によつて、バウンダリベローズ１とバツクア
ツプベローズ２との間のアルゴンガスの圧力を設
定圧にする。 In the normal operating state of a nuclear power plant, the temperature of the argon gas filled in the space 8 between the boundary bellows 1 and the backup bellows 2 is approximately constant, and there is little pressure change due to temperature changes, so the argon gas supply system Both the stop valve 13 of 21 and the stop valve 15 of the argon gas exhaust system 22 are closed. If the bellows breaks under this condition,
The pressure alarm 19 is activated by the pressure signal detected by the pressure detector 17 and a pressure alarm is issued. If so, you can see that the boundary bellows 1 is damaged. Further, damage to the boundary bellows 1 can also be determined by detection of sodium leak by the contact type sodium leak detector 9. If a pressure alarm is triggered, it can be determined whether it is caused by a broken bellows or by a change in temperature by examining the records of the change in temperature at temperature detector 10 and the change in pressure at pressure detector 17. It can be determined whether In case of temperature change, stop valve 12
Alternatively, the stop valve 14 is opened, and the pressure of the argon gas between the boundary bellows 1 and the backup bellows 2 is set to the set pressure by the pressure regulating valve 13 or the pressure regulating valve 15.
原子力プラントの起動時にはベローズ継手のバ
ウンダリベローズ１とバツクアツプベローズ２と
の間の空間８内のアルゴンガスの温度が上昇する
ので、アルゴンガス供給系２１の止め弁１２を閉
とし、アルゴンガス排出系２２の止め弁１４を開
とし、温度上昇によるアルゴンガスの膨張分をア
ルゴンガス排出系２２より大気へ放出する。。 When starting up a nuclear power plant, the temperature of the argon gas in the space 8 between the boundary bellows 1 and the backup bellows 2 of the bellows joint increases, so the stop valve 12 of the argon gas supply system 21 is closed and the argon gas exhaust system is closed. The stop valve 14 of 22 is opened, and the expansion of the argon gas due to the temperature rise is released from the argon gas exhaust system 22 to the atmosphere. .
原子力プラントの停止移行時には、前記空間８
内のアルゴンガスの温度が降下するので、アルゴ
ンガス供給系２１の止め弁１２を開とし、アルゴ
ンガス排出系２２の止め弁１４を閉とし、温度降
下によるアルゴンガスの収縮分をアルゴンガス供
給系２１より供給する。 When the nuclear power plant transitions to shutdown, the space 8
As the temperature of the argon gas in the argon gas decreases, the stop valve 12 of the argon gas supply system 21 is opened, and the stop valve 14 of the argon gas exhaust system 22 is closed. Supplied from 21.
従つて、温度上昇時に圧力検出器１７によりア
ルゴンガスの圧力の低下が検出されれば、バツク
アツプベローズ２の破損が検出され、温度降下時
に圧力検出器１７によりアルゴンガスの圧力の上
昇が検出されれば、バウンダリベローズ１の破損
が検出される。 Therefore, if the pressure detector 17 detects a decrease in the pressure of argon gas when the temperature rises, damage to the backup bellows 2 is detected, and when the temperature decreases, the pressure detector 17 detects an increase in the pressure of argon gas. If so, breakage of the boundary bellows 1 is detected.
バツクアツプベローズ２の破損時アルゴンガス
の供給を停止する為に、またバウンダリベローズ
１の破損時ベローズ隔離の為に、止め弁１６が閉
じられる。 The stop valve 16 is closed to stop the supply of argon gas when the backup bellows 2 is damaged, and to isolate the bellows when the boundary bellows 1 is damaged.
［発明の効果］
以上の説明で判るように本発明のベローズ破損
検出装置によれば、バウンダリベローズとバツク
アツプベローズとの間の空間に充填された不活性
ガスの圧力の変化が温度変化によるものかベロー
ズの破損によるものかが温度検出器によつて判別
され、ベローズの破損は不活性ガスの圧力の変化
を圧力検出器が検出することにより、即ち不活性
ガスの圧力降下の検出によりバツクアツプベロー
ズの破損が、不活性ガスの圧力上昇の検出により
バウンダリベローズの破損が速やかに容易に検出
され、且つ圧力警報器により圧力警報が発せら
れ、さらに接触型ナトリウムリーク検出器による
ナトリウムリークの検出によつてもバウンダリベ
ローズの破損が検出される。従つて、事前に液体
ナトリウムの外部へのリークを防止する処置を講
じて、安全に原子力プラントの運転を停止させる
ことができ、原子力プラントの安全性の向上に寄
与できる。[Effects of the Invention] As can be seen from the above explanation, according to the bellows breakage detection device of the present invention, changes in the pressure of the inert gas filled in the space between the boundary bellows and the back-up bellows are caused by temperature changes. The temperature sensor determines whether the damage is caused by damage to the bellows, and the damage to the bellows is determined by the pressure detector detecting a change in the pressure of the inert gas, that is, by detecting a drop in the pressure of the inert gas. Breakage of the boundary bellows can be quickly and easily detected by detecting an increase in the pressure of the inert gas, and a pressure alarm can be issued by a pressure alarm, and furthermore, a contact type sodium leak detector can detect a sodium leak. Breakage of the boundary bellows is detected even when the boundary bellows is damaged. Therefore, by taking measures to prevent leakage of liquid sodium to the outside in advance, the operation of the nuclear power plant can be safely stopped, contributing to improving the safety of the nuclear power plant.
図は本発明の二重構造のベローズ継手に於ける
ベローズ破損検出装置を示す図である。
１…バウンダリベローズ、２…バツクアツプベ
ローズ、３，３′…シエル、４…ピン、５…接続
リング、６，６′…スリーブ、７…配管、８…空
間、９…接触型ナトリウムリーク検出器、１０…
温度検出器、１１…アキユムレータ、１２，１
４，１６…止め弁、１３，１５…調圧弁、１７…
圧力検出器、１８…制御信号発生器、１９…圧力
警報器、２０…アルゴン（不活性）ガス供給源、
２１…アルゴン（不活性）ガス供給系、２２…ア
ルゴン（不活性）ガス排出系。
The figure shows a bellows breakage detection device in a double structure bellows joint of the present invention. 1... Boundary bellows, 2... Backup bellows, 3, 3'... Shell, 4... Pin, 5... Connection ring, 6, 6'... Sleeve, 7... Piping, 8... Space, 9... Contact type sodium leak detector , 10...
Temperature detector, 11...Accumulator, 12,1
4, 16... Stop valve, 13, 15... Pressure regulating valve, 17...
Pressure detector, 18... Control signal generator, 19... Pressure alarm, 20... Argon (inert) gas supply source,
21... Argon (inert) gas supply system, 22... Argon (inert) gas exhaust system.
Claims (1)
の二重構造のベローズを有するベローズ継手に於
いて、前記バウンダリベローズとバツクアツプベ
ローズとの間の空間に、不活性ガス供給源、アキ
ユムレータ、止め弁、調圧弁、止め弁を順次有す
る不活性ガス供給系を接続し、該不活性ガス供給
系の調圧弁の下流に、止め弁、調圧弁を順次有す
る不活性ガス排出系を分岐して設け、この不活性
ガス排出系の分岐部よりも上流で不活性ガス供給
系に圧力検出器を接続して設け、該圧力検出器に
は前記不活性ガス供給系の調圧弁及び不活性ガス
排出系の調圧弁を開閉制御する制御信号発生器及
び圧力警報器を別々に電気的に接続して設け、さ
らに前記バウンダリベローズとバツクアツプベロ
ーズとの間の空間に接触型ナトリウムリーク検出
器と温度検出器を設けて成る二重構造のベローズ
継手に於けるベローズ破損検出装置。1. In a bellows joint having a dual structure of a boundary bellows and a back-up bellows, an inert gas supply source, an accumulator, a stop valve, a pressure regulating valve, and a stop are provided in the space between the boundary bellows and the back-up bellows. An inert gas supply system having valves in sequence is connected, and downstream of the pressure regulating valve of the inert gas supply system, an inert gas exhaust system having a stop valve and a pressure regulating valve in sequence is provided as a branch, and this inert gas discharge A pressure detector is connected to the inert gas supply system upstream of the branching part of the system, and the pressure detector is configured to control the opening and closing of the pressure regulating valve of the inert gas supply system and the pressure regulating valve of the inert gas discharge system. A control signal generator and a pressure alarm are separately electrically connected to each other, and a contact type sodium leak detector and a temperature sensor are further provided in the space between the boundary bellows and the backup bellows. A device for detecting bellows damage in structural bellows joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56097426A JPS58733A (en) | 1981-06-25 | 1981-06-25 | Leak detecting method in case of breakdown of bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56097426A JPS58733A (en) | 1981-06-25 | 1981-06-25 | Leak detecting method in case of breakdown of bellows |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58733A JPS58733A (en) | 1983-01-05 |
| JPS6356937B2 true JPS6356937B2 (en) | 1988-11-09 |
Family
ID=14192087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56097426A Granted JPS58733A (en) | 1981-06-25 | 1981-06-25 | Leak detecting method in case of breakdown of bellows |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58733A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01259176A (en) * | 1988-04-08 | 1989-10-16 | Tanaka Kikinzoku Kogyo Kk | Production of thin metal film type composite material |
| JPH0636395Y2 (en) * | 1988-06-29 | 1994-09-21 | 日本バルカー工業株式会社 | Expansion joint device for piping |
| JPH10243670A (en) * | 1997-02-24 | 1998-09-11 | Central Res Inst Of Electric Power Ind | Thermoelectric transducing system |
| JP6879796B2 (en) * | 2017-03-29 | 2021-06-02 | 三菱パワー株式会社 | Burners, reactors, power plants |
| KR102023117B1 (en) * | 2018-02-12 | 2019-11-04 | 강태근 | Piping unit and heating system having the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5598326A (en) * | 1979-01-22 | 1980-07-26 | Hitachi Ltd | Breaking detection method of double bellow |
-
1981
- 1981-06-25 JP JP56097426A patent/JPS58733A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5598326A (en) * | 1979-01-22 | 1980-07-26 | Hitachi Ltd | Breaking detection method of double bellow |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58733A (en) | 1983-01-05 |
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