JPS599922B2 - Ryuutaiisou Hikansouchi - Google Patents

Description

【発明の詳細な説明】 本発明は流体移送配管装置に係り、バルブ、流量計等の
流体移送配管構成要素を配設された主配管がその構成要
素の破損もしくは故障等の原因により閉塞されその下流
側に流体を供給しえなくなつた場合、何れの構成要素が
故障したかを直ちに判別でき、しかも該流体の流路を該
主配管をバイパスするバイパス配管に自動的に切り換え
ることにより、上記構成要素を保護するとともに、該主
配管中の該構成要素の破損、故障等にも拘らず該主配管
の下流側に連続的に流体を供給しうる様構成した流体移
送配管装置を提供することを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid transfer piping device, and is used in cases where a main piping equipped with fluid transfer piping components such as valves and flow meters is blocked due to damage or malfunction of the components. If it becomes impossible to supply fluid to the downstream side, it is possible to immediately determine which component has failed, and by automatically switching the flow path of the fluid to the bypass piping that bypasses the main piping, the above-mentioned To provide a fluid transfer piping device configured to protect components and continuously supply fluid to the downstream side of the main piping despite damage, failure, etc. of the components in the main piping. With the goal.

一般に電力設備等のボイラプラント、都市ガス供給プラ
ント、化学プラント等は昼夜を分かたず連続的に稼動す
るのが普通であり、上記ボイラプラントの例えば燃料重
油供給配管には供給重油の流量制御装置であるコントロ
ール・バルブ、流量計等の他にフィルタ等の流体移送配
管構成要素が配設されプラントを常に安定的に稼動させ
る構成とされている。In general, boiler plants for electric power equipment, city gas supply plants, chemical plants, etc. normally operate continuously day and night. In addition to certain control valves, flow meters, etc., fluid transfer piping components such as filters are provided to ensure stable plant operation at all times.

しかるに、上記流量計等の構成要素が何らかの原因で破
損し作動不良となつた場合、従来の流体移送配管装置で
は保守作業員が故障した流量計の設置場所に直接赴き手
動弁を操作して流体がその流量計を迂回するバイパス配
管を流れるよう流路を切り換えねばならず、このため流
量計の故障を発見してから作業員が流路を切り換えるま
での間下流側への流体の供給が中断されるため、他の関
連プラントの稼動を停止しなければならない場合もあり
、プラント全体の稼動率が低下してしまうという欠点を
有していた。本発明は上記欠点を除去したものであり、
以下図面とともにその一実施例につき説明する。However, if a component such as the flow meter is damaged for some reason and becomes malfunctioning, with conventional fluid transfer piping systems, maintenance workers must go directly to the location where the failed flow meter is installed and operate the manual valve to remove the fluid. The flow path had to be switched so that the fluid flowed through the bypass piping that bypassed the flow meter, and as a result, the supply of fluid to the downstream side was interrupted from the time the failure of the flow meter was discovered until the time when the worker switched the flow path. Therefore, the operation of other related plants may have to be stopped, which has the disadvantage of reducing the operating rate of the entire plant. The present invention eliminates the above drawbacks,
An embodiment thereof will be described below with reference to the drawings.

図は本発明流体移送配管装置の一実施例の概略フロー線
図である。１は、例えばボイラプラント等の重油燃料供
給用の主配管で、その上流側から下流側に向かい順次流
路切換用開閉弁２、フィルタ３、容積式流量計（例えば
ルーツ式流量計）４、重油流量制御用開閉弁５等が配設
されている。The figure is a schematic flow diagram of an embodiment of the fluid transfer piping device of the present invention. Reference numeral 1 denotes a main pipe for supplying heavy oil fuel to, for example, a boiler plant, and from the upstream side to the downstream side there are sequentially a flow path switching on-off valve 2, a filter 3, a positive displacement flowmeter (for example, a Roots flowmeter) 4, An on-off valve 5 for controlling the flow rate of heavy oil is provided.

２ａ〜５ａは上記開閉弁２、フィルタ３、流量計４、開
閉弁５の夫夫の前後の流体の差圧を検出する差圧発信器
であり、各差圧発信器２ａ〜５ａの検出した差圧出力信
号は夫々伝送ライン６〜９を介して後述する流路切換器
１０に伝送される。2a to 5a are differential pressure transmitters that detect the differential pressure of the fluid before and after the on-off valve 2, the filter 3, the flow meter 4, and the on-off valve 5. The differential pressure output signals are transmitted to a flow path switching device 10, which will be described later, via transmission lines 6 to 9, respectively.

１１はバイパス配管で、開閉弁２の上流側の主配管１よ
り分岐し開閉弁５の下流側の主配管１に合流する。A bypass pipe 11 branches from the main pipe 1 on the upstream side of the on-off valve 2 and joins the main pipe 1 on the downstream side of the on-off valve 5.

１２は流路切換用開閉弁で、上記バイパス配管１１中に
配設されている。Reference numeral 12 denotes a flow path switching on-off valve, which is disposed in the bypass pipe 11.

流路切換器１０は各差圧発信器２ａ〜５ａの値に応じて
夫々伝送ライン１３，１４を介して開閉弁２，１２を開
閉する切換信号を出力する。１５は警報器で、各差圧発
信器２ａ〜５ａよりの差圧出力信号が夫夫の差圧設定値
を越えた場合に作動し警報信号を発する。The flow path switching device 10 outputs switching signals for opening and closing the on-off valves 2 and 12 via transmission lines 13 and 14, respectively, in accordance with the values of the differential pressure transmitters 2a to 5a. Reference numeral 15 denotes an alarm, which is activated to issue an alarm signal when the differential pressure output signal from each of the differential pressure transmitters 2a to 5a exceeds the husband's differential pressure setting value.

次に、上記構成装置の動作につき説明する。Next, the operation of the above-mentioned component device will be explained.

通常の送液状態において開閉弁２は開弁しており、開閉
弁１２は閉弁しているため、重油は主配管１の上流側の
重油サービスタンク（図示せず）より、開閉弁２、フイ
ルタ３、流量計４、開閉弁５等を通過して主配管１の下
流側に配設された重油バーナ（図示せず）に至りそこで
燃焼する。このとき、開閉弁２，５、フイルタ３、流量
計４等は重油に対する流体抵抗となるため、夫々の流体
抵抗の値に応じて各差圧発信器２ａ〜５ａは差圧出力信
号を発信する。しかるに、流路切換器１０は各差圧発信
器２ａ〜５ａに対応した差圧設定値を予め設定されてお
り、上記通常の送液状態においてはこの差圧設定値は上
記差圧出力信号よりも大となるよう設定されているため
、流路切換器１０より開閉弁２は開弁信号を、又開閉弁
１２は閉弁信号を供給されている。いま、重油中のゴミ
等がフイルタ３に目詰りし、これを閉塞したためにフイ
ルタ３の流体抵抗が異常に増大したとする。In the normal liquid feeding state, the on-off valve 2 is open and the on-off valve 12 is closed, so heavy oil is transferred from the on-off valve 2 to the heavy oil service tank (not shown) on the upstream side of the main pipe 1. The oil passes through the filter 3, flow meter 4, on-off valve 5, etc., reaches a heavy oil burner (not shown) disposed downstream of the main pipe 1, and is burned there. At this time, the on-off valves 2, 5, filter 3, flow meter 4, etc. act as fluid resistance to the heavy oil, so each differential pressure transmitter 2a to 5a transmits a differential pressure output signal according to the value of the respective fluid resistance. . However, the flow path switching device 10 has a differential pressure set value corresponding to each differential pressure transmitter 2a to 5a set in advance, and in the above-mentioned normal liquid feeding state, this differential pressure set value is determined from the above-mentioned differential pressure output signal. Since the on-off valve 2 is also set to be large, the on-off valve 2 is supplied with a valve-opening signal, and the on-off valve 12 is supplied with a closing signal from the flow path switching device 10. Suppose now that the filter 3 is clogged with dirt or the like in the heavy oil, and the fluid resistance of the filter 3 has increased abnormally due to this blockage.

このとき、フイルタ３で消費される重油の流体エネルギ
は通常の送液状態時と比較して大となるため、フイルタ
３の前後の重油の圧力差は大きく、差圧発信器３ａより
伝送ライン７を介して流路切換器１０に伝送される差圧
出力信号がフイルタ３の差圧設定値を上回る。この結果
、流路切換器１０は伝送ライン１３を介して開閉弁２に
対し閉弁信号を供給するとともに伝送ライン１４を介し
て開閉弁１２に対し開弁信号を供給する。これにより、
重油の流路が切り換り、いままで開閉弁２、フイルタ３
等を流れていた重油は主配管１、バイバス配管１１、開
閉弁１２、主配管１を順次通過して流れるようになる。
又、上記の如く重油の流路が切り換わるのと同時に警報
装置１５が作動し、フイルタ３の異常が警報される。又
、フイルタ３に限らず開閉弁５もしくは流量計４が破損
したりもしくは動作不良を起した場合にも差圧発信器５
ａ，４ａのうち故障箇所に対応する差圧発信器がその差
圧設定値を上回る差圧出力信号を切換器１０に供給する
ため、切換器１０が作動し上記同様流路の切り換えが行
なわれる。At this time, the fluid energy of the heavy oil consumed by the filter 3 is large compared to the normal liquid feeding state, so the pressure difference between the heavy oil before and after the filter 3 is large, and the differential pressure transmitter 3a is transmitted to the transmission line 7. The differential pressure output signal transmitted to the flow path switching device 10 through the filter 3 exceeds the differential pressure setting value of the filter 3. As a result, the flow path switching device 10 supplies a valve-closing signal to the on-off valve 2 via the transmission line 13 and supplies a valve-opening signal to the on-off valve 12 via the transmission line 14. This results in
The flow path for heavy oil has been changed, and until now the on-off valve 2 and filter 3 have changed.
The heavy oil that was flowing through the main pipe 1, the bypass pipe 11, the on-off valve 12, and the main pipe 1 comes to flow in this order.
Furthermore, at the same time as the heavy oil flow path is switched as described above, the alarm device 15 is activated to warn of an abnormality in the filter 3. In addition, the differential pressure transmitter 5 is activated not only when the filter 3 but also when the on-off valve 5 or the flow meter 4 is damaged or malfunctions.
Since the differential pressure transmitter corresponding to the failure location among a and 4a supplies a differential pressure output signal exceeding the differential pressure setting value to the switching device 10, the switching device 10 is activated and the flow path is switched in the same manner as described above. .

このように、主配管１の流体移送配管構成要素である開
閉弁５、フイルタ３、流量計４のうちいずれか一つでも
故障すると、流路が自動的に切り換り故障箇所を含む主
配管１には重油が供給されずバイパス配管１１を通じて
重油の供給が行なわれるため、故障した構成要素を保護
しうるのみでなく、前記重油バーナの燃焼を中断してボ
イラプラント及びその関連する他のブラントの一部を一
時的に稼動停止する必要はない。尚上記各構成要素２〜
５には個別に差圧発信器２ａ〜５ａが設けられているた
め、各差圧発信器２ａ〜５ａからの差圧出力信号の相違
により警報装置１５から各差圧出力信号に対応した異な
つた警報を発することもでき（例えば異なる色のランプ
を点灯させる）、これによれば何れの構成要素２〜５が
故障したかが直ちに判別しえ、交換、修理等の作業を直
ちに行ないえ便利である。In this way, if any one of the fluid transfer piping components of the main piping 1, such as the on-off valve 5, filter 3, and flow meter 4, fails, the flow path is automatically switched and the main piping including the failed part is automatically switched. 1 is not supplied with heavy oil, but is supplied through the bypass pipe 11, which not only protects the failed component, but also interrupts the combustion of the heavy oil burner and replaces the boiler plant and other related blunts. There is no need to temporarily suspend operations of any part of the system. In addition, each of the above components 2~
Since the differential pressure transmitters 2a to 5a are individually provided in the differential pressure transmitters 2a to 5a, the alarm device 15 outputs different signals corresponding to each differential pressure output signal due to differences in the differential pressure output signals from the differential pressure transmitters 2a to 5a. It is also possible to issue an alarm (for example, by lighting a lamp of a different color), which makes it possible to immediately determine which component 2 to 5 has failed, and to carry out replacement or repair work immediately, which is convenient. be.

尚、バイパス配管１１に開閉弁１２以外に重油流量制御
用開閉弁５、フイルタ３、流量計４等を配設した構成と
してもよく、又バイパス配管１１を複数本設けその一部
を前記重油サービスタンクに重油を還流させるためのリ
リーフ配管としてもよい。It should be noted that the bypass piping 11 may be configured to include an on-off valve 5 for heavy oil flow rate control, a filter 3, a flow meter 4, etc. in addition to the on-off valve 12, or a plurality of bypass piping 11 may be provided and a part of the heavy oil service It may also be used as relief piping to return heavy oil to the tank.

又、主配管１を流れる流体は重油に限らず化学プラント
等の化学物質でもよく、さらには都市ガス供給設備より
供給される都市ガス等の気体でもよい。Further, the fluid flowing through the main pipe 1 is not limited to heavy oil, but may be a chemical substance from a chemical plant or the like, or even gas such as city gas supplied from a city gas supply facility.

尚、流量計４は容積式に限らず面積式、推量式、差圧式
等いずれを用いてもよく、又伝送ライン６〜９，１３，
１４は使用する差圧発信器２ａ〜５ａ及び開閉弁２，５
の型式に応じて電線でも空油圧配管でもよい。Note that the flowmeter 4 is not limited to a volumetric type, and any type such as an area type, estimation type, or differential pressure type may be used, and the transmission lines 6 to 9, 13,
14 are differential pressure transmitters 2a to 5a and on-off valves 2 and 5 to be used.
Depending on the model, it may be an electric wire or pneumatic/hydraulic piping.

上述の如く、本発明流体移送配管装置は複数の構成要素
に夫々個別に差圧検出手段を設けているため、何れかひ
とつの構成要素が故障してその流路前後の差圧が異常に
なつたとき該故障した構成要素が直ちに判別でき直ちに
交換、修理等を行ないえきわめて便利であり、又上記異
常を検出して主配管からバイパス配管へ流路を切換え、
故障した構成要素の破壊を一定限度で止めうると共に、
流体を中断することなく連続的に下流側に供給しうるた
め、連続稼動を要求される電力設備のボイラプラント、
都市ガス供給設備及び化学プラント等に適用して特に有
効であるという特長を有する。As mentioned above, since the fluid transfer piping device of the present invention is provided with differential pressure detection means for each of the plurality of components, there is no possibility that if any one component fails, the differential pressure before and after the flow path becomes abnormal. It is very convenient to be able to immediately identify the malfunctioning component and immediately perform replacement or repair, etc., and to detect the above abnormality and switch the flow path from the main piping to the bypass piping.
It is possible to stop the destruction of failed components within a certain limit, and
Boiler plants for power equipment that require continuous operation because they can continuously supply fluid to the downstream side without interruption;
It has the feature of being particularly effective when applied to city gas supply equipment, chemical plants, etc.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明流体移送配管装置の一実施例の概略フロー線
図である。 １・・・・・・主配管、２，１２・・・・・・流路切換
用開閉弁、３・・・・・・フイルタ、４・・・・・・容
積式流量計、５・・・・・・重油流量制御用開閉弁、２
ａ〜５ａ・・・・・・差圧発信器、１０・・・・・・流
路切換器、１１・・・・・・バイパス配管、１５・・・
・・・警報器。The figure is a schematic flow diagram of an embodiment of the fluid transfer piping device of the present invention. 1... Main piping, 2, 12... On-off valve for flow path switching, 3... Filter, 4... Positive displacement flow meter, 5...・・・・Opening/closing valve for heavy oil flow rate control, 2
a~5a...Differential pressure transmitter, 10...Flow path switch, 11...Bypass piping, 15...
...Alarm.

Claims (1)

【特許請求の範囲】[Claims] １ 主配管途中に配設された弁、流量計等の複数の流体
移送配管構成要素と、該各構成要素を通過する流体の該
各構成要素の流路前後の圧力差を検出する複数の差圧検
出手段と、該各構成要素の少なくともひとつの流路前後
の差圧が予め設定した差圧になつたとき、該差圧を検出
する差圧検出手段の出力信号に応じて上記流体の流路を
該主配管より分岐し該構成要素を迂回するバイパス配管
へ該主配管より切換える流路切換手段と、該差圧検出手
段の出力信号に応じて該各構成要素の異常を警報する警
報装置とを設けてなることを特徴とする流体移送配管装
置。1 A plurality of fluid transfer piping components such as valves and flow meters disposed in the middle of the main piping, and a plurality of differentials that detect the pressure difference before and after the flow path of the fluid passing through each component. The pressure detection means detects the flow of the fluid according to the output signal of the pressure difference detection means that detects the pressure difference when the pressure difference before and after the flow path of at least one of the components reaches a preset pressure difference. a flow path switching means for switching a path from the main piping to a bypass piping that bypasses the component; and an alarm device for warning of abnormality in each component in response to an output signal of the differential pressure detection means. A fluid transfer piping device comprising: