JP2002303564A - Valve management system - Google Patents
Valve management systemInfo
- Publication number
- JP2002303564A JP2002303564A JP2001106612A JP2001106612A JP2002303564A JP 2002303564 A JP2002303564 A JP 2002303564A JP 2001106612 A JP2001106612 A JP 2001106612A JP 2001106612 A JP2001106612 A JP 2001106612A JP 2002303564 A JP2002303564 A JP 2002303564A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- fluid
- plant
- information
- valves
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、プラント運転上の
信頼性を維持しつつ、プラント運転情報から弁の内部流
体状態を評価し、弁の劣化診断を行うことで、プラント
内に多数配置された弁の保全を省力化することを提案す
る弁管理システムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention evaluates the internal fluid state of a valve based on plant operation information and diagnoses deterioration of the valve while maintaining the reliability of the operation of the plant. The present invention relates to a valve management system that proposes to save labor for maintaining a valve.
【０００２】[0002]
【従来の技術】プラント内の弁の減肉を原因とする破断
漏洩事故や隔離機能の低下を未然に防ぐことは重要な課
題である。これはプラント停止や要求出力の低下による
経済的損失が大きいだけでなく、放射性物質などの内部
の有害物質が漏洩，拡散することは危険度が高い上、社
会的影響が非常に大きいことから明らかである。2. Description of the Related Art It is an important issue to prevent breakage leakage accidents and deterioration of isolation function due to thinning of valves in a plant. This is not only because of the large economic loss due to plant shutdowns and the reduction in required output, but also because leakage and diffusion of internal harmful substances such as radioactive substances are highly dangerous and have a very large social impact. It is.
【０００３】一般に、配管経路に介設されている弁は、
摺動部分の摩耗などによる機械的損傷，キャビテーショ
ン流発生などによって起こる減肉に起因する水理的損傷
によって寿命に達する。[0003] In general, a valve interposed in a piping path includes:
The service life is attained due to mechanical damage due to wear of the sliding parts and hydraulic damage due to wall thinning caused by cavitation flow.
【０００４】ところで、弁の寿命評価は、劣化の確認は
目視などで行われていたが、一部の弁について、センサ
による劣化評価が行われるようになった。[0004] Incidentally, in the evaluation of the life of a valve, the deterioration has been confirmed by visual inspection or the like, but the deterioration of some valves has been evaluated by a sensor.
【０００５】たとえば機械的損傷による劣化に関して
は、すでに特開２０００−６５２４６号公報の技術等に
よって容易にこれを評価可能であり、水理的劣化に関し
ては特開平２−１５０７４０２号公報のように弁の上
流，下流側の圧力の差圧をセンサ等で測ることによって
評価することができる。For example, deterioration due to mechanical damage can be easily evaluated by the technique of Japanese Patent Application Laid-Open No. 2000-65246, and hydraulic deterioration can be easily evaluated by a valve as disclosed in Japanese Patent Application Laid-Open No. 2-1507402. It can be evaluated by measuring the differential pressure between the pressures on the upstream and downstream sides with a sensor or the like.
【０００６】このように従来は、弁にセンサを取り付け
ることで弁の劣化を把握し、交換や検査の時期を決定す
る方法が採られていた。As described above, conventionally, a method has been adopted in which the deterioration of the valve is grasped by attaching a sensor to the valve, and the time for replacement or inspection is determined.
【０００７】[0007]
【発明が解決しようとする課題】弁に取り付けるセンサ
は非常に高価であり、配管経路に大小さまざまな弁が多
数存在するプラントなどではすべての弁を管理するには
非経済的な保全方法である。A sensor mounted on a valve is very expensive, and in a plant where a large number of valves of various sizes exist in a piping route, it is an uneconomical maintenance method to manage all the valves. .
【０００８】よって、従来法で経済性を満たす弁の保全
を行うには、設計上重要な箇所のみにセンサを取り付け
て弁の水理的寿命を評価し、それ以外は目視のみで検査
する方法が採られていた。Accordingly, in order to maintain a valve satisfying economical efficiency by the conventional method, a method is required in which a sensor is attached only to a portion important in design and the hydraulic life of the valve is evaluated, and other than that, inspection is performed only visually. Was taken.
【０００９】このため、従来の方法ではプラント内すべ
ての弁の保全が実質不可能となり、信頼性が低い問題点
を有していた。For this reason, in the conventional method, maintenance of all valves in the plant becomes substantially impossible, and there is a problem of low reliability.
【００１０】本発明はこのような事情に鑑みなされたも
ので、プラント内のすべての弁を対象として、弁の使用
条件，環境，弁の幾何情報などを考慮して弁の危険度を
ランク付けし、保全対象となる弁の絞り込みを行い、信
頼性が高く、経済的な弁の保全システムを提供すること
を目的としたものである。The present invention has been made in view of such circumstances, and ranks the degree of risk of all valves in a plant in consideration of the use conditions of the valves, the environment, the geometric information of the valves, and the like. The object of the present invention is to narrow down the valves to be maintained and to provide a highly reliable and economical valve maintenance system.
【００１１】[0011]
【課題を解決するための手段】本発明は、弁の入り口圧
力と入り口口径，弁開度，流体の流量から求まる弁絞り
部での圧力および流体速度を求め、この圧力を流体の飽
和蒸気圧と比較することで、キャビテーションやフラッ
シングなどの流体状態の変化を評価し、評価した流体状
態，弁絞り部での流体速度および弁に使用される材料の
特性から弁の水理的寿命を数値的に評価し、弁の危険度
をランク付けすることで検査対象となる弁の絞り込み支
援を行う。SUMMARY OF THE INVENTION According to the present invention, a pressure and a fluid velocity at a valve constricted portion obtained from an inlet pressure and an inlet diameter of a valve, a valve opening degree, and a flow rate of a fluid are obtained, and this pressure is used as a saturated vapor pressure of the fluid. To evaluate changes in fluid state such as cavitation and flushing, and to calculate the hydraulic life of the valve numerically based on the evaluated fluid state, the fluid velocity at the valve constriction, and the characteristics of the material used for the valve. , And rank the degree of risk of the valves to assist in narrowing down the valves to be inspected.
【００１２】[0012]
【発明の実施の形態】本発明の一実施形態を利用した弁
管理システムを原子力プラントに適用した場合の全体構
成の一例を図１に示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the overall configuration when a valve management system using one embodiment of the present invention is applied to a nuclear power plant.
【００１３】本実施形態のシステムは入力装置１０１，
運転情報データ格納装置１０２，環境・材料データ格納
装置１０３，弁・流体データ格納装置１０４，弁危険度
評価手段１０５，表示装置１０６を備えている。The system of the present embodiment includes an input device 101,
An operation information data storage device 102, an environment / material data storage device 103, a valve / fluid data storage device 104, a valve risk evaluation means 105, and a display device 106 are provided.
【００１４】なお、運転情報データ格納装置１０２は、
各弁の開度や、流量，圧力などのプラントに据付られた
センサによって得られる情報、また、環境・材料データ
103は流体中の溶存酸素濃度，ＰＨや各弁に使用されて
いる材料の硬度，靭性，疲労強度などの情報，弁・流体
データ格納装置１０４は弁と配管の口径，接続方法，配
置情報，種類などの情報をそれぞれ格納している。弁危
険度評価手段１０５はこれら３つのデータ格納装置から
情報を引き出し、プラントの運転状態を反映し、キャビ
テーションやフラッシングなどの弁の内部流体状態を評
価し、その結果から弁の危険度をランク付けして表示装
置１０６によって可視化する。The driving information data storage device 102
Information obtained by sensors installed in the plant, such as the opening of each valve, flow rate, and pressure, and environmental and material data
103 is information on dissolved oxygen concentration in fluid, PH and hardness, toughness, fatigue strength of materials used for each valve, etc., and valve / fluid data storage device 104 is valve and pipe diameter, connection method, arrangement information, Information such as the type is stored. The valve risk evaluation means 105 extracts information from these three data storage devices, reflects the operating state of the plant, evaluates the internal fluid state of the valve such as cavitation and flushing, and ranks the risk of the valve based on the result. And visualized by the display device 106.
【００１５】以下に、本実施形態のシステムを構成する
各装置の詳細について説明する。Hereinafter, details of each device constituting the system of the present embodiment will be described.
【００１６】図２は運転情報データ格納装置１０２のデ
ータ格納形式を示す。運転情報データ格納装置１０２で
はプラント内の弁にＩＤをつけ、弁の開度ごとの流量特
性データ，開度と流量特性の関係に関与するプラグ（弁
体）の形状データを含む構成である。弁のＩＤは、系統
名−（弁機能−）弁番号の書式で記述される。弁番号は
弁に任意に付けられる番号である。プラグ形状は開度が
変化したときの流量特性の変化に大きく依存する。FIG. 2 shows a data storage format of the driving information data storage device 102. The operation information data storage device 102 has a configuration in which an ID is assigned to a valve in the plant, flow rate characteristic data for each valve opening degree, and plug (valve) shape data related to the relationship between the opening degree and the flow rate characteristic. The valve ID is described in the format of system name- (valve function-) valve number. The valve number is a number arbitrarily assigned to the valve. The plug shape greatly depends on the change in the flow characteristic when the opening degree changes.
【００１７】弁・流体データ格納装置１０４は図３のよ
うな弁の形状・配置データと図４および図５のような弁
内部流体情報を含む構成となる。The valve / fluid data storage device 104 has a configuration including the shape and arrangement data of the valve as shown in FIG. 3 and the fluid information inside the valve as shown in FIGS.
【００１８】弁の形状データ３０１はプラント内の各弁
の出入口口径，ストロークなどの弁の外観および内部形
状やプラント内の基準点からの弁入口および出口の空間
座標すなわち弁の３次元配置データ，弁とつながる配管
のＩＤ等を含む構成である。形状はバルブの種類を表し
ている。例えばグローブバルブ（ＧＬＢ），逆止弁（Ｃ
ＨＫ）を示している。材質は弁に使われている材料を格
納している。特に弁が複数の材質で構成されている場合
は、すべての情報を格納する。The valve shape data 301 includes the external appearance and internal shape of the valve such as the inlet and outlet diameters and strokes of each valve in the plant, the spatial coordinates of the valve inlet and outlet from a reference point in the plant, that is, three-dimensional arrangement data of the valve, This is a configuration including the ID of the pipe connected to the valve. The shape represents the type of valve. For example, globe valve (GLB), check valve (C
HK). The material stores the material used for the valve. Especially when the valve is made of a plurality of materials, all information is stored.
【００１９】弁配置データ３０２はプラント内での弁・
配管・プラント機器の３次元空間座標を示す。弁につい
ては弁出入口の中心の座標を格納する。The valve arrangement data 302 stores the valve /
3 shows three-dimensional space coordinates of piping and plant equipment. For the valve, the coordinates of the center of the valve entrance are stored.
【００２０】弁接続データ３０３は弁出入り口とそれぞ
れつながる部品のＩＤを格納している。The valve connection data 303 stores the ID of a part connected to each of the valve ports.
【００２１】弁内部流体情報は、弁内部を流れる流体の
流量Ｑ，弁入口での流速ｖ1 および圧力Ｐ1 ，弁出口で
の流速ｖ2 および圧力Ｐ2 ，温度Ｔをプラント内の弁ご
とに図４および図５のようにテーブル化したものを含む
構成である。図４の弁内部流体情報（設計値）はプラン
ト設計時においてヒートバランスによって求められる定
格出力での各パラメータを格納する。The fluid information inside the valve includes the flow rate Q of the fluid flowing inside the valve, the flow velocity v 1 and pressure P 1 at the valve inlet, the flow velocity v 2 and pressure P 2 at the valve outlet, and the temperature T for each valve in the plant. 4 and 5 are tables. The valve internal fluid information (design value) in FIG. 4 stores each parameter at a rated output obtained by heat balance at the time of plant design.
【００２２】一方、図５の弁内部流体情報（運転値）は
プラント運転時の弁内部を流れる流体の情報を格納す
る。On the other hand, the valve internal fluid information (operating value) in FIG. 5 stores information on the fluid flowing inside the valve during plant operation.
【００２３】図６は流体の特性値を格納する。ある温度
（セルシウス度）における流体の飽和蒸気圧（Ｐａ）お
よび比重（ｇ／cm3）を格納している。FIG. 6 stores the characteristic values of the fluid. The saturation vapor pressure (Pa) and specific gravity (g / cm 3 ) of the fluid at a certain temperature (degree Celsius) are stored.
【００２４】図７はプラントの機器６０１および機器６
０２を結ぶ配管系統を示す。プラントでは常に機器６０
１，６０２、例えば機器６０１は復水回収タンク、６０
２は復水器である。プラントにおいて機器の内部圧力Ｐ
1 ，流量Ｑ，流体温度Ｔは常に測定している。いま、何
らかの原因によって出力が低下した場合、プラントでは
弁６０３，６０４の開度を調節することにより、出力を
一定に保つ。FIG. 7 shows equipment 601 and equipment 6 of the plant.
2 shows a piping system connecting No. 02. In the plant, the equipment 60
1, 602, for example, the equipment 601 is a condensate recovery tank,
2 is a condenser. Internal pressure P of equipment in the plant
1 , the flow rate Q and the fluid temperature T are always measured. If the output decreases for some reason, the plant keeps the output constant by adjusting the opening of the valves 603 and 604.
【００２５】弁の開度を調節する際には弁６０３から６
０４までの流体の流速ｖ2や圧力Ｐ2，弁６０４から機器
６０２までの流体の流速ｖ3 や圧力Ｐ3 は変化する。特
に各弁の弁絞り部での圧力Ｐc ，ｖc は弁の開度によっ
て大きく変化する。When adjusting the opening of the valve, the valves 603 to 6
The flow velocity v 2 and pressure P 2 of the fluid up to 04 and the flow velocity v 3 and pressure P 3 of the fluid from the valve 604 to the device 602 vary. In particular the pressure P c, v c of the valve diaphragm portion of each valve varies greatly with the opening of the valve.
【００２６】これら各パラメータの変化は運転条件の変
化により常に更新され、弁の開度を変更してもその開度
に応じた弁内部の流体情報を知ることが可能となる。Changes in these parameters are constantly updated by changes in operating conditions, and even when the opening of the valve is changed, it is possible to know the fluid information inside the valve according to the opening.
【００２７】環境・材料データ１０３は図８で示す材料
データベースと図９で示す水質データベースを含む構成
である。The environment / material data 103 includes a material database shown in FIG. 8 and a water quality database shown in FIG.
【００２８】図８で示す材料データベースは弁に使われ
る材料の硬さ，疲労強度，靭性等の機械的特性を評価し
てテーブル化したものである。The material database shown in FIG. 8 is a table obtained by evaluating the mechanical properties such as hardness, fatigue strength and toughness of the material used for the valve.
【００２９】図９の水質データは弁内部に流れる流体の
溶存酸素量，ＰＨ等の水質をテーブル化したものであ
る。The water quality data shown in FIG. 9 is a table of water quality such as dissolved oxygen amount and PH of the fluid flowing inside the valve.
【００３０】本システムはこれら各データ格納装置から
得られるデータを入力として弁危険度評価手段１０５に
よってプラント運転情報を反映した弁の危険評価を行
う。この評価は詳細には図１０および図１１のような手
段で行われる。In the present system, the data obtained from each of these data storage devices is used as an input, and the valve risk evaluation means 105 performs the valve risk evaluation reflecting the plant operation information. This evaluation is performed in detail by means as shown in FIGS.
【００３１】流体評価１００１は運転情報データ格納装
置１０２から各弁の開度における流量特性データを、弁
・流体データ格納装置１０４から弁内部流体情報（運転
値），弁形状データを入力して現在の運転情報における
弁内部流体情報（運転値）の各パラメータの値を更新
し、弁の内部流体状態を弁絞り部での圧力Ｐc およびｖ
c と流体温度での飽和蒸気圧と比較することで弁の流体
状態を評価する。The fluid evaluation 1001 receives the flow rate characteristic data at the opening of each valve from the operation information data storage device 102 and the valve internal fluid information (operation value) and the valve shape data from the valve / fluid data storage device 104 and receives the current data. The value of each parameter of the valve internal fluid information (operating value) in the operation information of the above is updated, and the internal fluid state of the valve is changed to the pressures Pc and v at the valve restrictor.
The fluid state of the valve is evaluated by comparing c with the saturated vapor pressure at the fluid temperature.
【００３２】ここでそれぞれのパラメータの導出方法お
よび弁絞り部での流体状態評価方法についての詳細を図
１２に示す。FIG. 12 shows details of a method for deriving the respective parameters and a method for evaluating the fluid state in the valve restrictor.
【００３３】流体状態評価１００１は弁ＩＤをキーとし
て、配管形状・配置ＤＢから弁口径データ、プラント運
転情報データから流量特性データを検索し、この値を入
力として弁を図１３のような簡略化モデルに変換する。
ここで弁口径データは弁出入口流路断面積Ｓ1 およびＳ
2 を求めるために用い、流量特性データは弁絞り部の流
路断面積ＳR を求める。図の矢印は流体の進行方向を示
す。弁内部速度は流量Ｑと流路断面積から The fluid state evaluation 1001 retrieves valve diameter data from the piping shape / arrangement DB and flow characteristic data from the plant operation information data using the valve ID as a key, and inputs the values to simplify the valve as shown in FIG. Convert to a model.
Here, the valve diameter data is based on the cross-sectional areas S 1 and S
The flow characteristic data is used to determine the flow path cross-sectional area S R of the valve restrictor. The arrows in the figure indicate the traveling direction of the fluid. The internal speed of the valve is determined from the flow rate Q and the flow path cross-sectional area
【００３４】とそれぞれ求めることができ、弁絞り部で
の圧力Ｐc は、ベルヌーイの定理より The pressure P c at the valve restrictor is calculated by Bernoulli's theorem.
【００３５】のように求めることができる。Can be obtained as follows.
【００３６】求めた弁絞り部の圧力Ｐc と飽和蒸気圧Ｐ
v を流体温度Ｔをキーとして流体情報ＤＢから求め、Ｐ
v／Ｐcを求める。The obtained pressure Pc of the valve restrictor and the saturated vapor pressure P
v is obtained from the fluid information DB using the fluid temperature T as a key, and P
Find v / Pc .
【００３７】弁リスク評価１００２は流体評価１００１
において求められた、流体情報を入力して弁の現在の危
険度を評価する。The valve risk evaluation 1002 is a fluid evaluation 1001
And input the fluid information determined in the above to evaluate the current risk of the valve.
【００３８】詳細には図１１のような処理フローで処理
される。More specifically, the processing is performed according to the processing flow shown in FIG.
【００３９】流体評価１００１において求めた各弁のＰ
v／Ｐc，ｖc およびＰ2 を入力データとして、材料デー
タベース，水質データベースから材料のエロージョン感
受性を求め、流体のエロージョンしきい速度ｖd を求め
る。弁絞り部での流体の速度ｖc は流体のエネルギーの
大きさを表し、ｖc が大きければ大きいほどエロージョ
ンの発生確率は高くなる。また、材料ごとにエロージョ
ンの感受性は異なるために、弁のエロージョン発生確率
は流体の速度と材料の機械的特性の相互作用から求ま
る。この相互作用はエロージョンしきい速度ｖd を設定
することで評価される。ｖd は多変量解析を用いた統計
解析による手法や、材料疲労特性を考慮したスプリンガ
ーの式等を用いて理論的に算出され、材料ごとに異な
る。The P of each valve determined in the fluid evaluation 1001
v / P c, as v c and P 2 input data, material database, determine the erosion susceptibility of the material from the water quality database, determine the erosion threshold velocity v d of the fluid. Velocity v c of the fluid at the valve diaphragm portion represents the magnitude of the energy of the fluid, v c probability of erosion The greater the higher. Also, since the erosion sensitivity differs for each material, the erosion occurrence probability of the valve is determined from the interaction between the fluid velocity and the mechanical properties of the material. This interaction is evaluated by setting the erosion threshold speed v d. v d is theoretically calculated using a method based on statistical analysis using multivariate analysis, a Springer's formula that takes into account material fatigue properties, and the like, and differs for each material.
【００４０】入力されたデータから、各弁の内部流体状
態の評価を次のように行う。内部流体状態とはすなわち
ノーマル流，キャビテーション流，フラッシュ流の３状
態であり、Ｐv／Ｐc＜１のとき内部流体状態はノーマル
流、Ｐv／Ｐc＞１のときキャビテーション流、Ｐv／Ｐc
＞１かつＰ2＜Ｐvのときフラッシュ流となる。Ｐv／Ｐc
およびＰ2 の値を管理することにより、弁の内部流体状
態によるエロージョン発生確率が一元管理可能となる。From the input data, the internal fluid state of each valve is evaluated as follows. The internal fluid state is three states of normal flow, cavitation flow, and flash flow. When Pv / Pc <1, the internal fluid state is normal flow, and when Pv / Pc > 1, the cavitation flow, Pv / P c
When> 1 and P 2 <P v , the flash flow is established. Pv / Pc
And by managing the value of P 2, erosion probability due to internal fluid state of the valve it is possible centrally managed.
【００４１】また、流体の速度によりｖc＜ｖdのときエ
ロージョンが発生しにくく、ｖc＞ｖd のときエロージ
ョン発生しやすくなる。材料ごとのｖdとｖcを比較する
ことにより、材料ごとのエロージョン発生確率が一元管
理可能となる。Further, erosion hardly occurs when v c <v d , and erosion easily occurs when v c > v d , depending on the velocity of the fluid. By comparing the v d and v c of each material, the erosion generation probability for each material allows centralized management.
【００４２】弁保全度可視化モジュール１００３は、こ
の弁内部流体状態の結果、すなわち各弁の内部流体情報
を図１４のように（ｖc，Ｐv／Ｐc）を座標系中にまと
めると、ｙ軸に流体状態によるエロージョン評価、横軸
に流体速度による流体評価を表示可能となり弁のエロー
ジョン管理を一覧可能とする。これにより、弁を６つの
危険度に分けることができる。すなわち、流体状態が
フラッシュ流で流体によるエロージョン可能性が高い弁
１４０１、流体状態がフラッシュ流で流体によるエロ
ージョン可能性が低い弁１４０２、流体状態がキャビ
テーション流で流体によるエロージョン可能性が高い弁
１４０３、流体状態がキャビテーション流で流体によ
るエロージョン可能性が低い弁１４０４、流体状態が
ノーマル流で流体によるエロージョン可能性が高い弁１
４０５、流体状態がノーマル流で流体によるエロージ
ョン可能性が低い弁１４０６に分けることが可能とな
る。The valve maintainability visualization module 1003, a result of the valve internal fluid state, i.e. as (v c, P v / P c) of FIG. 14 the internal fluid information of each valve summarized in a coordinate system, The erosion evaluation based on the fluid state can be displayed on the y-axis, and the fluid evaluation based on the fluid velocity can be displayed on the horizontal axis, so that the erosion management of the valve can be viewed. This allows the valve to be divided into six levels of risk. That is, a valve 1401 whose fluid state is a flush flow and a high possibility of erosion by a fluid, a valve 1402 whose fluid state is a flush flow and a low possibility of erosion by a fluid, a valve 1403 where the fluid state is a cavitation flow and a high possibility of erosion by a fluid, A valve 1404 having a low erosion possibility due to a fluid when the fluid state is a cavitation flow, and a valve 1 having a high erosion possibility due to a fluid when the fluid state is a normal flow.
405, it is possible to divide the valve into a valve 1406 in which the fluid state is normal flow and the possibility of erosion by the fluid is low.
【００４３】この結果を表示装置１００４で顧客に示
し、検査対象となる弁の絞込みを行う。このシステムに
おいて、弁内部流体情報について設計値と運転値を入力
することにより、運転中の弁が設計性能よりもどの程度
過酷な運転をしているかを示すことが可能となり、これ
により、プラントの運転支援が可能となる。The result is shown to the customer on the display device 1004, and the valves to be inspected are narrowed down. In this system, by inputting the design value and the operation value for the valve internal fluid information, it is possible to indicate how severe the operation of the valve during operation is compared with the design performance. Driving support becomes possible.
【００４４】[0044]
【発明の効果】本発明によれば、プラント内のすべての
弁を対象として、弁の使用条件，環境，弁の幾何情報か
ら弁の危険度をランク付けし、保全対象となる弁の絞り
込みを行い、信頼性が高く、経済的な弁の保全システム
を提供することが可能となる。According to the present invention, for all valves in a plant, the degree of risk of the valves is ranked based on the use conditions of the valves, the environment, and the geometric information of the valves, and the valves to be maintained are narrowed down. It is possible to provide a reliable and economical valve maintenance system.
【図１】弁管理システムの概要。FIG. 1 is an outline of a valve management system.
【図２】運転情報データの内容および格納様式。FIG. 2 shows the contents and storage format of driving information data.
【図３】弁形状・配置データの内容および格納様式。FIG. 3 shows the contents and storage format of valve shape / arrangement data.
【図４】弁内部流体情報（設計値）の内容および格納様
式。FIG. 4 shows the contents and storage format of valve internal fluid information (design values).
【図５】弁内部流体情報（運転値）の内容および格納様
式。FIG. 5 shows the content and storage format of valve internal fluid information (operating value).
【図６】流体飽和蒸気圧および比重―温度定数表。FIG. 6 is a table showing fluid saturation vapor pressure and specific gravity-temperature constant.
【図７】プラント機器，配管配置図。FIG. 7 is a diagram showing plant equipment and piping arrangements.
【図８】材料データの内容および格納様式。FIG. 8 shows the contents and storage format of material data.
【図９】水質データの内容および格納様式。FIG. 9 shows the contents and storage format of water quality data.
【図１０】弁危険度評価手段構成図。FIG. 10 is a view showing a configuration of a valve risk evaluation means.
【図１１】弁リスク評価処理フロー図。FIG. 11 is a flowchart of a valve risk evaluation process.
【図１２】内部流体評価処理フロー図。FIG. 12 is a flowchart of an internal fluid evaluation process.
【図１３】弁簡略化モデル。FIG. 13 is a simplified valve model.
【図１４】弁危険度可視化モジュール。FIG. 14 is a valve risk visualization module.
１０１…入力装置、１０２…運転情報データ格納装置、
１０３…環境・材料データ格納装置、１０４…弁・流体
データ格納装置、１０５…弁危険度評価手段、１０６…
表示装置。101: input device, 102: driving information data storage device,
103: environment / material data storage device, 104: valve / fluid data storage device, 105: valve risk evaluation means, 106 ...
Display device.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 清時 芳久 茨城県日立市幸町三丁目１番１号 株式会 社日立製作所原子力事業部内 (72)発明者 高田 将年 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 Ｆターム(参考） 2G024 AA15 BA11 BA12 BA21 CA16 CA17 FA02 FA06 FA15 3H065 AA08 CA01 CA03 5H223 AA01 BB01 DD03 DD09 EE05 EE06 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Yoshihisa Seiki, 3-1-1, Komachi, Hitachi, Ibaraki Pref. Nuclear Power Division, Hitachi, Ltd. 1-chome F term in Hitachi Research Laboratory, Hitachi, Ltd. F-term (reference) 2G024 AA15 BA11 BA12 BA21 CA16 CA17 FA02 FA06 FA15 3H065 AA08 CA01 CA03 5H223 AA01 BB01 DD03 DD09 EE05 EE06
Claims (2)
弁内部を流れる流体の情報を格納する弁・流体データ格
納装置と、弁に使用される材料の機械的特性や内部流体
の水質についての情報を格納する環境・材料データ格納
装置と、プラント運転時の弁の開度変化による弁内部流
体の流量特性の変化についての情報を格納する運転情報
データ格納装置と、管路の形状や、管路を流れる流体の
流量および弁の上流側圧力を入力し、入力されたパラメ
ータと予め入力されている定数に基づいて、キャビテー
ションやフラッシング等の弁内部の流体状態を評価する
弁危険度評価手段とを有することを特徴とする弁管理シ
ステム。1. A valve / fluid data storage device for storing data on the shape and arrangement of a valve and information on a fluid flowing inside the valve during operation of a plant, and a mechanical property of a material used for the valve and a water quality of the internal fluid. An environment / material data storage device for storing information on the operation of the plant, an operation information data storage device for storing information on a change in the flow rate characteristic of the fluid inside the valve due to a change in the opening degree of the valve during plant operation, a shape of the pipeline, Valve risk evaluation means for inputting the flow rate of the fluid flowing in the pipeline and the upstream pressure of the valve and evaluating the fluid state inside the valve such as cavitation and flushing based on the input parameters and constants input in advance. And a valve management system.
点での理想的な流体情報をさらに有し、各弁の設計時と
運転時での弁の危険度を比較し、要求性能以上で運転さ
れている弁を評価することを特徴とする請求項１に記載
の弁管理システム。2. The apparatus according to claim 2, further comprising ideal fluid information at the time of plant design from the valve / fluid data, comparing the risk of the valves at the time of design and operation of each valve, and operating at a required performance or more. The valve management system according to claim 1, wherein the evaluated valve is evaluated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001106612A JP3890916B2 (en) | 2001-04-05 | 2001-04-05 | Valve management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001106612A JP3890916B2 (en) | 2001-04-05 | 2001-04-05 | Valve management system |
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| Publication Number | Publication Date |
|---|---|
| JP2002303564A true JP2002303564A (en) | 2002-10-18 |
| JP3890916B2 JP3890916B2 (en) | 2007-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001106612A Expired - Fee Related JP3890916B2 (en) | 2001-04-05 | 2001-04-05 | Valve management system |
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