JPH10295843A - Relay water receiving device for fire fighting pump - Google Patents
Relay water receiving device for fire fighting pumpInfo
- Publication number
- JPH10295843A JPH10295843A JP10949697A JP10949697A JPH10295843A JP H10295843 A JPH10295843 A JP H10295843A JP 10949697 A JP10949697 A JP 10949697A JP 10949697 A JP10949697 A JP 10949697A JP H10295843 A JPH10295843 A JP H10295843A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- water
- relay
- water control
- relay water
- 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
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Details Of Valves (AREA)
Abstract
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、消防ポンプの中継
水受入装置に関する。The present invention relates to a relay water receiving device for a fire pump.
【０００２】[0002]
【従来の技術】従来、消防活動において、水源と火災現
場との間の距離や高低差が大きい場合には、図８で示す
ように、ホースｈを介し複数の消防ポンプｐを直列的に
つないで、放水筒先ａでの水圧や水量を確保するように
しているが、各消防ポンプｐの性能の差や、各消防ポン
プｐ間の高低差やホースｈの長さの違いによって、キャ
ビテーションを起こす恐れがあり、そのため、前段の消
防ポンプｐが吐出する水をタンクｔに受けて、同タンク
ｔ中の水を次段の消防ポンプｐに吸込ませるようにして
いる。2. Description of the Related Art Conventionally, in firefighting activities, when a distance or a height difference between a water source and a fire site is large, a plurality of firefighting pumps p are connected in series via a hose h as shown in FIG. In order to secure the water pressure and water volume at the water discharge pipe tip a, cavitation is caused by differences in the performance of each fire pump p, differences in height between the fire pumps p, and differences in the length of the hose h. For this reason, the water discharged from the fire pump p in the preceding stage is received by the tank t, and the water in the tank t is sucked into the fire pump p in the next stage.
【０００３】ところが、何らかの原因でタンクｔ中の水
が欠乏すると、次の消防ポンプｐがエアを吸込むなどの
不具合が発生するため、各消防ポンプｐのオペレータｂ
の他にタンクｔ中の水量を監視して、前段の消防ポンプ
ｐのオペレータｂに指示を与える監視人ｄを要すると共
に、前記タンクｔの運搬等の作業に追われて、消火活動
に遅れを生ずるという問題がある。[0003] However, if the water in the tank t becomes deficient for some reason, the next fire pump p draws air and other troubles occur.
In addition to the above, it is necessary to have a monitoring person d who monitors the amount of water in the tank t and gives an instruction to the operator b of the fire pump p in the preceding stage, and is delayed in the fire extinguishing activities due to work such as transporting the tank t. There is a problem that occurs.
【０００４】また、騒音の激しい火災現場では、タンク
ｔの監視人ｄが前段の消防ポンプｐのオペレータｂに指
示を与えるのに、トランシーバ等の通信器具を要すると
いう問題もある。[0004] In addition, at a fire site where noise is intense, there is another problem that a communication device such as a transceiver is required for the supervisor d of the tank t to give an instruction to the operator b of the fire pump p in the preceding stage.
【０００５】そこで、本願出願人らが既に発明した特公
平６−９８１９７号「消防自動車の中継水制御バルブ」
を消防ポンプｐの吸水口とホースｈとの間に介設して、
キャビテーションを防止することにより、図７で示すよ
うに、タンクｔなしにホースｈを介して複数の消防ポン
プｐを直列的に接続できるようにして、タンクｔと監視
人ｄとを要せず、これに起因する消火活動の遅れ等の不
具合を防止するようにした。Accordingly, Japanese Patent Publication No. Hei 6-98197, "Relay Water Control Valve for Fire Engines," has already been invented by the present applicants.
Between the water suction port of the fire pump p and the hose h,
By preventing cavitation, as shown in FIG. 7, a plurality of fire pumps p can be connected in series via a hose h without a tank t, so that the tank t and the observer d are not required, Problems such as delay of fire extinguishing activities due to this were prevented.
【０００６】[0006]
【発明が解決しようとする課題】ところが、消火活動
中、消防士が誤って放水筒先ａを手放したりして、同放
水筒先ａの拘束が解除された際に、放水の反作用で放水
筒先ａが振れ回って危険であるため、放水を停止させる
必要があるが、最近の消防ポンプｐの吐出口ｅには、操
作を容易にするためにボールバルブが用いられており、
同ボールバルブは極めて急速に閉弁できるため、タンク
ｔなしで複数の消防ポンプｐを接続した状態では、最終
段の消防ポンプｐの吐出口ｅを閉弁した際に、ウオータ
ハンマ現象による高水圧が発生して、中間の消防ポンプ
ｐやホースｈが破損する恐れがある。However, when a firefighter accidentally releases the tip of the water discharge cylinder a during the fire extinguishing operation and the restraint of the water discharge cylinder tip a is released, the water discharge cylinder is reacted by the water discharge. Since the tip a swings and is dangerous, it is necessary to stop water discharge. However, a discharge valve e of the recent fire pump p is provided with a ball valve for easy operation.
Since the ball valve can be closed very quickly, when a plurality of fire pumps p are connected without the tank t, when the discharge port e of the fire pump p at the last stage is closed, a high water pressure due to a water hammer phenomenon occurs. May occur, and the intermediate fire pump p and the hose h may be damaged.
【０００７】[0007]
【課題を解決するための手段】そこで、本発明では、複
数の消防ポンプとホースとを直列的に接続して形成した
送水路の中途に弁座を介して連通したシリンダを設け
て、上記弁座を介し送水路を外部と連通させると共に、
上記シリンダ中に、上記弁座に対向する弁体を形成した
ピストンを摺動自在に挿入し、同ピストンを弁バネによ
り弁座方向に付勢して、消防ポンプの正常運転時には上
記弁体が弁座を閉塞し、ウオータハンマ発生時には送水
路中の水圧により弁体が弁座を開放すべく構成したウオ
ータハンマ防止部を具備することを特徴とする消防ポン
プの中継水受入装置を提供せんとするものである。Therefore, according to the present invention, a cylinder is provided in the middle of a water supply passage formed by connecting a plurality of fire pumps and hoses in series through a valve seat. While connecting the water channel to the outside through the seat,
A piston forming a valve body opposed to the valve seat is slidably inserted into the cylinder, and the piston is urged in the valve seat direction by a valve spring so that the valve body is normally operated during normal operation of the fire pump. It is necessary to provide a relay water receiving device for a fire pump characterized by comprising a water hammer preventing portion configured to close a valve seat and open a valve seat by a water pressure in a water passage when a water hammer occurs. Is what you do.
【０００８】また、次のような特徴を併せ有するもので
ある。The present invention has the following features.
【０００９】上記ウオータハンマ防止部を中継水制御バ
ルブと一体に構成し、同中継水制御バルブは、消防ポン
プの吸水口とホースとの間に着脱自在に装着したバルブ
シェルの下流側端部に中継水制御弁座を形成し、同バル
ブシェルの内部に弁支持体を設けて同弁支持体の下流側
面に吸水口と連通した弁室を形成し、同弁支持体に下流
方向に開口した中継水制御シリンダを形成し、同中継水
制御シリンダに中継水制御ピストンを摺動自在に挿入し
て、同ピストンの上下流側面をそれぞれ外気と弁室とに
臨ませ、同中継水制御ピストンを、弁支持体を摺動自在
に挿通した弁棒を介し、前記中継水制御弁座に対向した
中継水制御弁体に連動連結し、しかも、ウオータハンマ
防止部の弁座を中継水制御バルブの弁室に連通させたこ
と。The above-mentioned water hammer prevention unit is formed integrally with a relay water control valve, and the relay water control valve is provided at a downstream end of a valve shell detachably mounted between a water suction port of the fire fighting pump and a hose. A relay water control valve seat was formed, a valve support was provided inside the valve shell, and a valve chamber communicating with a water suction port was formed on a downstream side surface of the valve support, and opened downstream in the valve support. A relay water control cylinder is formed, a relay water control piston is slidably inserted into the relay water control cylinder, and the upstream and downstream sides of the piston face the outside air and the valve chamber, respectively. , Via a valve rod slidably inserted through a valve support, interlockingly connected to the relay water control valve body facing the relay water control valve seat, and furthermore, the valve seat of the water hammer prevention unit is connected to the relay water control valve. Having communicated with the valve room.
【００１０】前記送水路の中途と連通して同送水路の水
圧が予め設定した圧力よりも低下した際に作動するスイ
ッチと、同スイッチと電源とに接続した表示部とを具備
して、消防ポンプがキャビテーションを起こしやすい状
態にあることを報知するキャビテーション検知部を具備
すること。The fire fighting system includes a switch that communicates with the middle of the water passage and operates when the water pressure in the water passage falls below a predetermined pressure, and a display unit connected to the switch and a power supply. A cavitation detection unit for notifying that the pump is in a state where cavitation is likely to occur.
【００１１】上記キャビテーション検知部と中継水制御
バルブとを一体に構成し、キャビテーション検知部のス
イッチを、前記中継水制御バルブの中継水制御弁座の上
流側と連通させたこと。The cavitation detection section and the relay water control valve are integrally formed, and a switch of the cavitation detection section is communicated with the upstream side of the relay water control valve seat of the relay water control valve.
【００１２】前記ウオータハンマ防止部と中継水制御バ
ルブとキャビテーション検知部とを一体に構成したこ
と。[0012] The water hammer prevention unit, the relay water control valve, and the cavitation detection unit are integrally formed.
【００１３】[0013]
【発明の実施の形態】複数の消防ポンプとホースとを直
列的に接続して形成した送水路の中途、即ち、消防ポン
プの吸水口とホースとの間に中継水制御バルブを介設し
て、キャビテーションを防止する。BEST MODE FOR CARRYING OUT THE INVENTION A relay water control valve is provided in the middle of a water supply passage formed by connecting a plurality of fire pumps and hoses in series, that is, between a water suction port of a fire pump and a hose. Prevent cavitation.
【００１４】また、上記中継水制御バルブと弁座を介し
て連通したシリンダを設け、同シリンダにピストンを挿
入し、ピストンをバネで付勢してピストンに作用する圧
力と対抗させることにより、ピストンに予め設定した値
以上の圧力が作用すると弁座が開き、消防ポンプの吸水
側の圧力水を外部に流出させるようにして、該消防ポン
プよりも上流側に発生するウオータハンマを防止する。A cylinder is provided in communication with the relay water control valve via a valve seat. A piston is inserted into the cylinder, and the piston is urged by a spring to oppose the pressure acting on the piston. When a pressure equal to or higher than a preset value acts on the fire pump, the valve seat opens to allow the pressure water on the water suction side of the fire pump to flow out to prevent water hammer generated upstream of the fire pump.
【００１５】また、上記送水路に連通して同送水路中の
水圧が設定値よりも低下した時に作動するスイッチを設
け、同スイッチを表示部と電源とに接続して、キャビテ
ーションを起こしやすい程度に水圧が低下した際に表示
部を作動させる。[0015] Further, a switch communicating with the water supply channel and operating when the water pressure in the water supply channel falls below a set value is provided, and the switch is connected to a display unit and a power supply so that cavitation is easily generated. The display is activated when the water pressure drops.
【００１６】[0016]
【実施例】本発明の実施例について図面を参照して説明
する。Embodiments of the present invention will be described with reference to the drawings.
【００１７】図１は、本発明に係る中継水受入装置Ａを
示しており、同中継水受入装置Ａは、消防ポンプＰの吸
水口１とホース６との間に介在して、キャビテーション
を防止する中継水制御バルブＶと、複数の消防ポンプＰ
とホース６とを直列的に接続して形成した送水路の中途
に連通して、ウオータハンマによる各部の損傷を防止す
るウオータハンマ防止部Ｗと、上記送水路の中途に連通
して、キャビテーションを起こしやすい状態になったこ
とを報知するキャビテーション検知部Ｃとが一体に構成
されており、可搬式の消防ポンプＰの吸水口１とホース
６との間に着脱自在に装着されている。図中、Ｅはエン
ジン部、P1はポンプ部、２は吐出口、３は吐出圧計、４
は吸水圧計、５はボールバルブ型の吐出弁である。FIG. 1 shows a relay water receiving device A according to the present invention. The relay water receiving device A is interposed between a water inlet 1 of a fire pump P and a hose 6 to prevent cavitation. Relay water control valve V and multiple fire pumps P
And a hose 6 are connected in series to a midway of a water supply channel formed to prevent damage to each part by a water hammer, and a water hammer prevention portion W, which communicates with the middle of the water supply channel to perform cavitation. A cavitation detecting section C for notifying that the state is easily raised is integrally formed, and is detachably mounted between the water suction port 1 of the portable fire pump P and the hose 6. In the figure, E is the engine part, P1 is the pump part, 2 is the discharge port, 3 is the discharge pressure gauge, 4
Is a water absorption pressure gauge and 5 is a ball valve type discharge valve.
【００１８】中継水制御バルブＶは、図１及び図４で示
すように、消防ポンプＰの吸水口１に着脱自在に上流側
端部を装着したバルブシェル10の外側端を略円錐形状に
縮径して中継水制御弁座11を形成すると共に、同バルブ
シェル10の内部に後方向に開口した中継水制御シリンダ
12を形成した弁支持体13を設けて、同弁支持体13と吸水
口１との間に弁室14を形成し、弁支持体13を摺動自在に
挿通した弁棒15の外側端に略円錐形状の中継水制御弁体
16を固着し、弁棒15の内側端に前記中継水制御シリンダ
12に摺動自在に挿入した中継水制御ピストン17を固着し
て、同中継水制御ピストン17の内側面を弁室14に臨ま
せ、同中継水制御ピストン17の内側面を連通孔18を介し
て外気に連通させている。The relay water control valve V is, as shown in FIGS. 1 and 4, the outer end of a valve shell 10 having an upstream end detachably attached to a water intake port 1 of a fire pump P, which is reduced to a substantially conical shape. A relay water control cylinder having a diameter that forms a relay water control valve seat 11 and that opens rearward inside the valve shell 10.
A valve support 13 having a valve support 12 is provided, a valve chamber 14 is formed between the valve support 13 and the water inlet 1, and the valve support 15 is slidably inserted into an outer end of a valve rod 15. A substantially conical relay water control valve element
Fix the relay water control cylinder to the inside end of the valve stem 15
A relay water control piston 17 slidably inserted into 12 is fixedly attached, the inner surface of the relay water control piston 17 faces the valve chamber 14, and the inner surface of the relay water control piston 17 passes through a communication hole 18. To communicate with the outside air.
【００１９】かかる構成によって、中継水制御弁体16に
は、中継水制御弁座11から内側方向に流入する水の動圧
によって内側方向の力が作用し、中継水制御ピストン17
には、弁室14の静圧による外側方向の力が作用してお
り、消防ポンプＰが通常の作動状態にあるときは、中継
水制御弁体16に作用する力と中継水制御ピストン17に作
用する力とが釣り合って、中継水制御弁座11から中継水
制御弁体16が離隔した位置で安定しているが、消防ポン
プＰにキャビテーションが発生する程度に弁室14の静圧
が低下すると、中継水制御弁体16が上記安定位置から内
側方向に移動して、中継水制御弁体16と中継水制御弁座
11との間隔が大きくなり、吸水量が増加するので、複数
の消防ポンプＰとホース６とを直列的に接続しても、キ
ャビテーションを防止することができる。With this configuration, an inward force acts on the relay water control valve body 16 due to the dynamic pressure of the water flowing inward from the relay water control valve seat 11, and the relay water control piston 17
, An outward force due to the static pressure of the valve chamber 14 acts on the relay water control valve body 16 and the relay water control piston 17 when the fire pump P is in a normal operation state. The acting force is balanced, and the relay water control valve element 16 is stable at a position separated from the relay water control valve seat 11, but the static pressure of the valve chamber 14 is reduced to such an extent that cavitation occurs in the fire pump P. Then, the relay water control valve body 16 moves inward from the stable position, and the relay water control valve body 16 and the relay water control valve seat are moved.
Since the distance between the fire pumps 11 and the hose 6 increases, the cavitation can be prevented even if the plurality of fire pumps P and the hoses 6 are connected in series.
【００２０】図２は、ウオータハンマ防止部Ｗとキャビ
テーション検知部Ｃとを示しており、ウオータハンマ防
止部Ｗは、上記中継水制御バルブＶの上方に内外側取付
脚部19,20 を介して横長略筒状の筒状体21を取付け、同
筒状体21の内側部にウオータハンマ防止部Ｗを設け、外
側部にキャビテーション検知部Ｃを設けている。FIG. 2 shows a water hammer prevention section W and a cavitation detection section C. The water hammer prevention section W is provided above the relay water control valve V via inner and outer mounting legs 19 and 20. A tubular body 21 having a horizontally long and substantially cylindrical shape is attached, a water hammer prevention unit W is provided inside the tubular body 21, and a cavitation detecting unit C is provided outside.
【００２１】ウオータハンマ防止部Ｗは、筒状体21の内
側部に内側方向に開口したシリンダ30を形成し、同シリ
ンダ30の底面に略円錐形状の弁座31を形成し、同弁座31
を内側取付脚部19に形成した内側連通路32を介し、送水
路の中途としての前記弁室14に連通させると共に、同シ
リンダ30の内部に下流側端部に略円錐形状の弁体33を形
成したピストン34を摺動自在に挿入し、同ピストン34と
シリンダ30の内側端に螺着したキャップ35との間に弁バ
ネ36を挿入し、同弁バネ36によりピストン34を外側方向
に付勢して、ピストン34先端の中継水制御弁体16を上記
弁座31に圧着させている。The water hammer preventing portion W has a cylinder 30 which is opened inward on the inner side of the cylindrical body 21, and a substantially conical valve seat 31 is formed on the bottom surface of the cylinder 30.
Through the inner communication passage 32 formed in the inner mounting leg portion 19, and communicate with the valve chamber 14 at the middle of the water supply passage, and a substantially conical valve body 33 at the downstream end inside the cylinder 30. The formed piston 34 is slidably inserted, and a valve spring 36 is inserted between the piston 34 and a cap 35 screwed to the inner end of the cylinder 30, and the piston 34 is attached outward by the valve spring 36. The relay water control valve element 16 at the tip of the piston 34 is pressed against the valve seat 31 by pressing.
【００２２】また、上記シリンダ30の内壁に、弁座31と
弁体33との当接位置の内側からシリンダ30の内側部にか
けて軸方向に複数の連通溝37を形成すると共に、前記キ
ャップ35に外部と連通した排水管38の基端部を挿通させ
て、弁座31と弁体33とが離隔した際に、前記弁室14を、
弁座31、連通溝37及び排水管38を介して外部に連通させ
るようにしている。A plurality of communication grooves 37 are formed in the inner wall of the cylinder 30 in the axial direction from the inside of the contact position between the valve seat 31 and the valve body 33 to the inside of the cylinder 30. When the base end of the drain pipe 38 communicating with the outside is inserted, and the valve seat 31 and the valve body 33 are separated, the valve chamber 14 is
It communicates with the outside through the valve seat 31, the communication groove 37 and the drain pipe.
【００２３】かかる構成によって、ウオータハンマ等に
より弁室14の内部が異常に高圧になると、同圧力によっ
てピストン34が内側方向に移動して弁座31が開き、弁室
14の圧力を排水管38を介して外部に逃がすことができ
る。更に、弁バネ36の収縮量が上記弁室14内部の圧力に
略比例するので、同圧力が高くなるに従って次第に弁座
31が大きく開くことになり、ウオータハンマによる急激
な圧力上昇に素早く対応することができる。With this configuration, when the inside of the valve chamber 14 becomes abnormally high in pressure due to a water hammer or the like, the piston 34 moves inward by the same pressure, and the valve seat 31 opens, and the valve chamber 31 opens.
The pressure of 14 can be released outside through the drain pipe 38. Further, since the contraction amount of the valve spring 36 is substantially proportional to the pressure inside the valve chamber 14, the valve seat gradually increases as the pressure increases.
31 is greatly open, and it can respond quickly to sudden pressure rise due to water hammer.
【００２４】従って、複数の消防ポンプＰとホース６と
を直列的に接続して送水路を形成した場合に、急速に最
終段の消防ポンプＰの吐出弁５を急速に閉弁しても、ウ
オータハンマによる消防ポンプＰやホース６の破損を防
止することができる。Therefore, when a plurality of fire pumps P and hoses 6 are connected in series to form a water supply passage, even if the discharge valve 5 of the fire pump P at the last stage is rapidly closed, It is possible to prevent the fire pump P and the hose 6 from being damaged by the water hammer.
【００２５】キャビテーション検知部Ｃは、筒状体21の
外側部に外側方向に開口した検知シリンダ40を形成し
て、同検知シリンダ40の底部を外側取付脚部20中に形成
した外側連通路41を介し、送水路の中途としての前記中
継水制御弁座11の上流側に連通させると共に、同検知シ
リンダ40の内部に、周面に陥入溝42を周設した検知ピス
トン43を摺動自在に挿入し、同検知シリンダ40の開口部
に螺着したソケット44と検知ピストン43との間にスプリ
ング45を介装して、検知ピストン43を内側方向に付勢し
ている。The cavitation detecting section C has a detection cylinder 40 which is formed on the outside of the cylindrical body 21 and which is open outward, and the bottom of the detection cylinder 40 is formed in the outside mounting leg 20 in the outside communication passage 41. Through the relay water control valve seat 11 in the middle of the water supply passage, and slidably slides a detection piston 43 having an indentation groove 42 formed in a peripheral surface inside the detection cylinder 40. , And a spring 45 is interposed between the socket 44 screwed into the opening of the detection cylinder 40 and the detection piston 43 to urge the detection piston 43 inward.
【００２６】また、検知シリンダ40の側壁外側面に検知
スイッチ46を設けて、同検知スイッチ46の作動子47を前
記陥入溝42に陥入させており、中継水制御弁座11上流側
の水圧が高いときには、スプリング45が圧縮されて検知
ピストン43が外側方向に移動し、検知スイッチ46の作動
子47が検知ピストン43の側壁に乗り上げてＯＦＦ状態を
保持し、上記水圧がキャビテーションが発生する程度に
低下すると、検知スイッチ46の作動子47が陥入溝42に陥
入してＯＮ状態になるようにしている。A detection switch 46 is provided on the outer surface of the side wall of the detection cylinder 40, and an operator 47 of the detection switch 46 is recessed in the recess groove 42. When the water pressure is high, the spring 45 is compressed, the detection piston 43 moves outward, the operator 47 of the detection switch 46 rides on the side wall of the detection piston 43 and keeps the OFF state, and the water pressure causes cavitation. When the temperature decreases to a certain extent, the operator 47 of the detection switch 46 is recessed into the recessed groove 42 to be turned on.
【００２７】前記ソケット44の左側には、上面と両側面
とにそれぞれ透明窓48を設けたランプハウス49を設け、
同ランプハウス49中に前記検知スイッチ46と接続した表
示部50としての電球を収納すると共に、同ランプハウス
49の下側面に検知スイッチ46と接続したジャック51を設
け、同ジャック51と消防ポンプＰに付設したバッテリ52
とをコード53と介して接続している。図中、54はＯリン
グ、55はヒューズ、56は中継ターミナルである。On the left side of the socket 44, there is provided a lamp house 49 provided with transparent windows 48 on the upper surface and both side surfaces, respectively.
A lamp as a display unit 50 connected to the detection switch 46 is stored in the lamp house 49, and the lamp house 49 is housed in the lamp house 49.
A jack 51 connected to the detection switch 46 is provided on a lower surface of the 49, and the jack 51 and a battery 52 attached to the fire pump P are provided.
And are connected via a code 53. In the figure, 54 is an O-ring, 55 is a fuse, and 56 is a relay terminal.
【００２８】かかる構成により、中継水制御弁座11上流
側の水圧が高いときには、検知スイッチ46がＯＦＦ状態
を保持するが、上記水圧がキャビテーションが発生する
程度に低下すると、検知スイッチ46がＯＮ状態になり表
示部50の電球が点灯してキャビテーションが起こり易く
なったことを報知する。With this configuration, when the water pressure on the upstream side of the relay water control valve seat 11 is high, the detection switch 46 is kept in the OFF state, but when the water pressure is reduced to such an extent that cavitation occurs, the detection switch 46 is turned on. And the light bulb of the display unit 50 is turned on to notify that cavitation is likely to occur.
【００２９】また、筒状体21が中継水制御バルブＶと離
隔し、かつ、両方の軸線が平行しているので、中継水受
入装置Ａの着脱に際して、把手として利用することがで
きる。Further, since the tubular body 21 is separated from the relay water control valve V and both axes are parallel to each other, it can be used as a handle when attaching and detaching the relay water receiving device A.
【００３０】図３はキャビテーション検知部の他の実施
例を示しており、このキャビテーション検知部C1は筒状
体21の外側上方に圧力計60を設けて、同圧力計60を前記
外側取付脚部20中の外側連通路41を介して前記中継水制
御弁座11の上流側に連通させ、同圧力計60の指針により
オペレータに指示を与えて、キャビテーションを防止す
るようにしている。図中61は保護枠体である。FIG. 3 shows another embodiment of the cavitation detecting section. The cavitation detecting section C1 is provided with a pressure gauge 60 above the outside of the cylindrical body 21, and the pressure gauge 60 is attached to the outside mounting leg section. 20 is communicated to the upstream side of the relay water control valve seat 11 through the outer communication passage 41, and an operator is instructed by the pointer of the pressure gauge 60 to prevent cavitation. In the figure, reference numeral 61 denotes a protective frame.
【００３１】図４は中継水受入装置の他実施例を示して
おり、この中継水受入装置A1は、前記と略同一構成の中
継水制御バルブＶの上方にキャビテーション検知部C2を
配置し、中継水制御バルブＶの下方に前記と同一構成の
ウオータハンマ防止部Ｗを配置している。FIG. 4 shows another embodiment of the relay water receiving device. In this relay water receiving device A1, a cavitation detecting portion C2 is disposed above a relay water control valve V having substantially the same configuration as that described above. Below the water control valve V, a water hammer prevention unit W having the same configuration as above is arranged.
【００３２】このキャビテーション検知部C2は、中継水
制御弁座11の上流側に連通した２個の圧力スイッチ70,7
1 を設け、一方の圧力スイッチ70を約10Kgf/cm2 以上で
ＯＦＦするように設定して緑色発光ダイオード72に接続
し、他方の圧力スイッチ71を約１Kgf/cm2 以下でＯＮす
るように設定して赤色発光ダイオード73に接続し、上記
各圧力スイッチ70,71 をコネクタ74とコード53とを介し
て電源に接続し、上記各発光ダイオード72,73 を透明な
保護カバー75で被包して表示部50としている。従って、
緑色発光ダイオード72だけが点灯しているときは消防ポ
ンプＰが正常に運転しており、赤色発光ダイオード73が
点灯しているときはキャビテーションを起こしやすい状
態であることを表示することができる。The cavitation detecting section C2 is provided with two pressure switches 70, 7 communicating upstream of the relay water control valve seat 11.
1 is set, one pressure switch 70 is set to turn off at about 10 kgf / cm 2 or more, connected to the green light emitting diode 72, and the other pressure switch 71 is set to turn on at about 1 kgf / cm 2 or less Then, the pressure switches 70, 71 are connected to a power supply via a connector 74 and a cord 53, and the light emitting diodes 72, 73 are covered with a transparent protective cover 75. The display unit 50 is used. Therefore,
When only the green light emitting diode 72 is lit, it is possible to indicate that the fire pump P is operating normally, and when the red light emitting diode 73 is lit, it is possible to indicate that cavitation is likely to occur.
【００３３】図５は、従来の消防自動車に搭載した車載
ポンプP2に本発明の中継水受入装置Ａを装着した実施例
を示しており、上記車載ポンプP2の吸水側に二又状に分
岐した吸水管80の基端を連通連設し、上記吸水管80の分
岐管の先端にそれぞれボールバルブ型の吸水弁81を連通
連設しており、キャビテーションやウオータハンマの防
止機能を有していないものである。図中、82は吐水管、
一点鎖線83は消防自動車の外壁を示す。FIG. 5 shows an embodiment in which the relay water receiving device A of the present invention is mounted on the on-vehicle pump P2 mounted on a conventional fire engine, and is bifurcated into the water absorption side of the on-vehicle pump P2. The base end of the water absorption pipe 80 is connected and communicated, and the ball valve type water absorption valve 81 is connected and connected to the distal end of the branch pipe of the water absorption pipe 80, and does not have a function of preventing cavitation and water hammer. Things. In the figure, 82 is a spout pipe,
The dashed line 83 indicates the outer wall of the fire engine.
【００３４】かかる車載ポンプP2の一方の吸水弁81に、
本発明の中継水受入装置Ａを取付けて、キャビテーショ
ンとウオータハンマ現象とを防止するようにしている。One of the water intake valves 81 of the on-vehicle pump P2 has:
The relay water receiving device A of the present invention is attached to prevent cavitation and water hammer.
【００３５】図６は、既に中継水制御バルブＶを吸水弁
81の内側に具備した消防自動車の車載ポンプP2に、本発
明のウオータハンマ防止部Ｗを装着した実施例を示して
おり、中継水制御バルブＶの弁室14を排水管38を介して
ウオータハンマ防止部Ｗに連通連結して、ウオータハン
マ現象を防止するようにしている。FIG. 6 shows that the relay water control valve V is already connected to the suction valve.
In this embodiment, a water hammer prevention unit W of the present invention is mounted on a vehicle-mounted pump P2 of a fire engine provided inside 81, and a valve chamber 14 of a relay water control valve V is connected to a water hammer via a drain pipe 38. It is connected to the prevention part W to prevent the water hammer phenomenon.
【００３６】[0036]
【発明の効果】本発明によれば次のような効果を得るこ
とができる。According to the present invention, the following effects can be obtained.
【００３７】請求項１記載の発明では、複数の消防ポン
プとホースとを直列的に接続して形成した送水路の中途
に弁座を介して連通したシリンダを設けて、上記弁座を
介し送水路を外部と連通させると共に、上記シリンダ中
に、上記弁座に対向する弁体を形成したピストンを摺動
自在に挿入し、同ピストンを弁バネにより弁座方向に付
勢して、消防ポンプの正常運転時には上記弁体が弁座を
閉塞し、ウオータハンマ発生時には送水路中の水圧によ
り弁体が弁座を開放すべく構成したウオータハンマ防止
部を具備しているので、ウオータハンマが発生しても、
上記弁座から高圧水が外部に放出されて、送水路中の圧
力上昇を抑制するので、最終段の消防ポンプの吐出口を
急速に閉鎖しても、途中の消防ポンプやホースに異常な
高圧が作用するのが防止され、ウオータハンマによる消
防ポンプやホースの破損を防止することができる。According to the first aspect of the present invention, a cylinder communicating with a valve seat is provided in the middle of a water supply passage formed by connecting a plurality of fire pumps and hoses in series. The water pump communicates with the outside, and a piston having a valve body opposed to the valve seat is slidably inserted into the cylinder, and the piston is urged in the valve seat direction by a valve spring, so that the fire pump During normal operation, the valve body closes the valve seat, and when a water hammer occurs, the valve body has a water hammer prevention unit configured to open the valve seat by the water pressure in the water supply passage, so that a water hammer occurs. Even
High-pressure water is discharged from the valve seat to the outside to suppress the rise in pressure in the water channel, so even if the discharge port of the final stage fire pump is rapidly closed, abnormally high pressure Can be prevented from acting, and the fire pump or hose can be prevented from being damaged by the water hammer.
【００３８】請求項２記載の発明では、上記ウオータハ
ンマ防止部を中継水制御バルブと一体に構成し、同中継
水制御バルブは、消防ポンプの吸水口とホースとの間に
着脱自在に装着したバルブシェルの下流側端部に中継水
制御弁座を形成し、同バルブシェルの内部に弁支持体を
設けて同弁支持体の下流側面に吸水口と連通した弁室を
形成し、同弁支持体に下流方向に開口した中継水制御シ
リンダを形成し、同中継水制御シリンダに中継水制御ピ
ストンを摺動自在に挿入して、同ピストンの上下流側面
をそれぞれ外気と弁室とに臨ませ、同中継水制御ピスト
ンを、弁支持体を摺動自在に挿通した弁棒を介し、前記
中継水制御弁座に対向した中継水制御弁体に連動連結
し、しかも、ウオータハンマ防止部の弁座を中継水制御
バルブの弁室に連通させたことによって、複数の消防ポ
ンプとホースとを直列的に接続して形成した送水路にお
いて、一個の装置で上述したウオータハンマ防止機能と
キャビテーション防止機能との両方の機能を実現するこ
とができ、しかも、同装置が消防ポンプの吸水口とホー
スとの間に着脱自在としているので、既存の消防ポンプ
に容易に装着可能であり、また、消防ポンプの格納や運
搬時にも便利である。According to the second aspect of the present invention, the water hammer prevention unit is integrally formed with the relay water control valve, and the relay water control valve is detachably mounted between the water suction port of the fire fighting pump and the hose. A relay water control valve seat is formed at the downstream end of the valve shell, a valve support is provided inside the valve shell, and a valve chamber communicating with a water intake port is formed on a downstream side surface of the valve support, A relay water control cylinder opened in the downstream direction is formed on the support, and a relay water control piston is slidably inserted into the relay water control cylinder, and the upper and downstream sides of the piston face the outside air and the valve chamber, respectively. The relay water control piston is operatively connected to a relay water control valve body facing the relay water control valve seat through a valve rod slidably inserted through a valve support. The valve seat communicates with the valve chamber of the relay water control valve Thus, in a water channel formed by connecting a plurality of fire pumps and hoses in series, it is possible to realize both the water hammer prevention function and the cavitation prevention function with one device. Moreover, since the device is detachable between the water suction port of the fire fighting pump and the hose, it can be easily attached to an existing fire fighting pump, and is convenient for storing and transporting the fire fighting pump.
【００３９】請求項３記載の発明では、前記送水路の中
途と連通して同送水路の水圧が予め設定した圧力よりも
低下した際に作動するスイッチと、同スイッチと電源と
に接続した表示部とを具備して、消防ポンプがキャビテ
ーションを起こしやすい状態にあることを報知するキャ
ビテーション検知部を具備しているので、消防ポンプが
キャビテーションを起こす前に、オペレータが消防ポン
プのスロットル等を操作して、消防ポンプを効率良く運
転することができる。According to a third aspect of the present invention, there is provided a switch which communicates with the middle of the water supply passage and operates when the water pressure of the water supply passage falls below a predetermined pressure, and a display connected to the switch and the power supply. And a cavitation detection unit that notifies that the fire pump is in a state where cavitation is likely to occur, so that the operator operates the throttle or the like of the fire pump before the fire pump causes cavitation. Thus, the fire pump can be operated efficiently.
【００４０】請求項４記載の発明では、上記キャビテー
ション検知部と中継水制御バルブとを一体に構成し、キ
ャビテーション検知部のスイッチを、前記中継水制御バ
ルブの中継水制御弁座の上流側と連通させたことによっ
て、複数の消防ポンプとホースとを直列的に接続して形
成した送水路において、一個の装置で上述したキャビテ
ーション防止機能とキャビテーション予知機能との両方
の機能を実現することができ、しかも、同装置が消防ポ
ンプの吸水口とホースとの間に着脱自在としているの
で、既存の消防ポンプに容易に装着可能であり、また、
消防ポンプの格納や運搬時にも便利である。According to the fourth aspect of the present invention, the cavitation detecting section and the relay water control valve are integrally formed, and a switch of the cavitation detecting section communicates with an upstream side of the relay water control valve seat of the relay water control valve. By doing so, in a water channel formed by connecting a plurality of fire pumps and hoses in series, it is possible to realize both the cavitation prevention function and the cavitation prediction function described above with one device, Moreover, since the device is detachable between the water suction port of the fire pump and the hose, it can be easily attached to an existing fire pump.
It is also convenient for storing and transporting fire pumps.
【００４１】請求項５記載の発明では、前記ウオータハ
ンマ防止部と中継水制御バルブとキャビテーション検知
部とを一体に構成したことによって、一個の装置で上述
したキャビテーション防止機能と、ウオータハンマ防止
機能と、キャビテーション予知機能との三つの機能を実
現することができ、しかも、同装置が消防ポンプの吸水
口とホースとの間に着脱自在としているので、既存の消
防ポンプに容易に装着可能であり、また、消防ポンプの
格納や運搬時にも便利である。According to the fifth aspect of the present invention, since the water hammer prevention unit, the relay water control valve and the cavitation detection unit are integrally formed, the above-described cavitation prevention function and water hammer prevention function can be realized by one device. , Cavitation prediction function can be realized, and moreover, since the device is detachable between the water suction port of the fire fighting pump and the hose, it can be easily attached to the existing fire fighting pump, It is also convenient when storing or transporting the fire pump.
【図１】本発明に係る消防ポンプの中継水受入装置の側
面図。FIG. 1 is a side view of a relay water receiving device of a fire pump according to the present invention.
【図２】ウオータハンマ防止部とキャビテーション検知
部との断面側面図。FIG. 2 is a sectional side view of a water hammer prevention unit and a cavitation detection unit.
【図３】他実施例キャビテーション検知部の断面側面
図。FIG. 3 is a cross-sectional side view of a cavitation detection unit according to another embodiment.
【図４】他実施例中継水受入装置の断面説明図。FIG. 4 is an explanatory sectional view of a relay water receiving device according to another embodiment.
【図５】消防自動車の車載ポンプに装着した中継水受入
装置の断面説明図。FIG. 5 is a sectional explanatory view of a relay water receiving device mounted on a vehicle-mounted pump of a fire engine.
【図６】消防自動車の車載ポンプに装着したウオータハ
ンマ防止部の断面説明図。FIG. 6 is a sectional explanatory view of a water hammer prevention unit mounted on a vehicle-mounted pump of a fire engine.
【図７】消防ポンプの接続状況を示す説明図。FIG. 7 is an explanatory diagram showing a connection state of a fire pump.
【図８】従来の消防ポンプの接続状況を示す説明図。FIG. 8 is an explanatory diagram showing a connection state of a conventional fire pump.
Ａ 中継水受入装置 Ｃ キャビテーション検知部 Ｐ 消防ポンプ Ｖ 中継水制御バルブ Ｗ ウオータハンマ防止部 １ 吸水口 ６ ホース 10 バルブシェル 11 中継水制御弁座 12 中継水制御シリンダ 13 弁支持体 14 弁室 15 弁棒 16 中継水制御弁体 17 中継水制御ピストン 46 スイッチ 31 弁座 30 シリンダ 33 弁体 34 ピストン 36 弁バネ 50 表示部 70,71 スイッチ A Relay water receiving device C Cavitation detector P Fire pump V Relay water control valve W Water hammer prevention unit 1 Water inlet 6 Hose 10 Valve shell 11 Relay water control valve seat 12 Relay water control cylinder 13 Valve support 14 Valve room 15 valve Rod 16 Relay water control valve 17 Relay water control piston 46 Switch 31 Valve seat 30 Cylinder 33 Valve 34 Piston 36 Valve spring 50 Display 70,71 Switch
Claims (5)
直列的に接続して形成した送水路の中途に弁座(31)を介
して連通したシリンダ(30)を設けて、上記弁座(31)を介
し送水路を外部と連通させると共に、上記シリンダ(30)
中に、上記弁座(31)に対向する弁体(33)を形成したピス
トン(34)を摺動自在に挿入し、同ピストン(34)を弁バネ
(36)により弁座(31)方向に付勢して、消防ポンプ(P) の
正常運転時には上記弁体(33)が弁座(31)を閉塞し、ウオ
ータハンマ発生時には送水路中の水圧により弁体(33)が
弁座(31)を開放すべく構成したウオータハンマ防止部
(W) を具備することを特徴とする消防ポンプの中継水受
入装置。A cylinder (30) communicating via a valve seat (31) is provided in the middle of a water passage formed by connecting a plurality of fire pumps (P) and hoses (6) in series, The water passage is communicated with the outside through the valve seat (31), and the cylinder (30)
A piston (34) having a valve body (33) facing the valve seat (31) is slidably inserted therein, and the piston (34) is attached to a valve spring.
(36) urges the valve seat (31) toward the valve seat (31) .When the fire pump (P) is in normal operation, the valve body (33) closes the valve seat (31). The water hammer prevention part is configured so that the valve body (33) opens the valve seat (31).
(W) A relay water receiving device for a fire pump, comprising:
制御バルブ(V) と一体に構成し、同中継水制御バルブ
(V) は、消防ポンプ(P) の吸水口(1) とホース(6) との
間に着脱自在に装着したバルブシェル(10)の下流側端部
に中継水制御弁座(11)を形成し、同バルブシェル(10)の
内部に弁支持体(13)を設けて同弁支持体(13)の下流側面
に吸水口(1) と連通した弁室(14)を形成し、同弁支持体
(13)に下流方向に開口した中継水制御シリンダ(12)を形
成し、同中継水制御シリンダ(12)に中継水制御ピストン
(17)を摺動自在に挿入して、同ピストン(17)の上下流側
面をそれぞれ外気と弁室(14)とに臨ませ、同中継水制御
ピストン(17)を、弁支持体(13)を摺動自在に挿通した弁
棒(15)を介し、前記中継水制御弁座(11)に対向した中継
水制御弁体(16)に連動連結し、しかも、ウオータハンマ
防止部(W) の弁座(31)を中継水制御バルブ(V) の弁室(1
4)に連通させたことを特徴とする請求項１記載の消防ポ
ンプの中継水受入装置。2. The relay water control valve according to claim 1, wherein the water hammer prevention part (W) is integrally formed with a relay water control valve (V).
(V) has a relay water control valve seat (11) at the downstream end of the valve shell (10) detachably mounted between the water inlet (1) of the fire pump (P) and the hose (6). A valve support (13) is provided inside the valve shell (10), and a valve chamber (14) communicating with the water inlet (1) is formed on the downstream side of the valve support (13). Valve support
A relay water control cylinder (12) that opens in the downstream direction is formed in (13), and a relay water control piston is formed in the relay water control cylinder (12).
(17) is slidably inserted so that the upstream and downstream sides of the piston (17) face the outside air and the valve chamber (14), respectively, and the relay water control piston (17) is attached to the valve support (13). ) Is slidably inserted through a valve rod (15), interlockingly connected to a relay water control valve body (16) opposed to the relay water control valve seat (11), and further, a water hammer prevention part (W) The valve seat (31) of the relay water control valve (V)
The relay water receiving device for a fire pump according to claim 1, wherein the device is connected to (4).
水圧が予め設定した圧力よりも低下した際に作動するス
イッチと、同スイッチと電源とに接続した表示部(50)と
を具備して、消防ポンプ(P) がキャビテーションを起こ
しやすい状態にあることを報知するキャビテーション検
知部(C) を具備することを特徴とする請求項１又は２記
載の消防ポンプの中継水受入装置。3. A switch which communicates with the middle of the water channel and operates when the water pressure of the water channel becomes lower than a predetermined pressure, and a display unit (50) connected to the switch and a power supply. The relay water receiving device for a fire pump according to claim 1 or 2, further comprising a cavitation detector (C) for notifying that the fire pump (P) is in a state in which cavitation is likely to occur.
水制御バルブ(V) とを一体に構成し、キャビテーション
検知部(C) のスイッチを、前記中継水制御バルブ(V) の
中継水制御弁座(11)の上流側と連通させたことを特徴と
する請求項３記載の消防ポンプの中継水受入装置。4. The cavitation detecting section (C) and the relay water control valve (V) are integrally formed, and a switch of the cavitation detecting section (C) is set to a relay water control valve of the relay water control valve (V). The relay water receiving device for a fire pump according to claim 3, wherein the relay water receiving device is connected to an upstream side of the seat (11).
制御バルブ(V) とキャビテーション検知部(C) とを一体
に構成し、ウオータハンマ防止部(W) の弁座(31)を中継
水制御バルブ(V) の弁室(14)に連通させ、中継水制御バ
ルブ(V) のスイッチを、前記中継水制御バルブ(V) の中
継水制御弁座(11)の上流側と連通させたことを特徴とす
る請求項３又は４記載の消防ポンプの中継水受入装置。5. The water hammer prevention unit (W), the relay water control valve (V), and the cavitation detection unit (C) are integrally formed, and a valve seat (31) of the water hammer prevention unit (W) is relayed. The water control valve (V) is connected to the valve chamber (14), and the switch of the relay water control valve (V) is connected to the upstream side of the relay water control valve seat (11) of the relay water control valve (V). The relay water receiving device for a fire pump according to claim 3 or 4, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10949697A JP3178800B2 (en) | 1997-04-25 | 1997-04-25 | Relay water receiving device for fire pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10949697A JP3178800B2 (en) | 1997-04-25 | 1997-04-25 | Relay water receiving device for fire pumps |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10295843A true JPH10295843A (en) | 1998-11-10 |
| JP3178800B2 JP3178800B2 (en) | 2001-06-25 |
Family
ID=14511739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10949697A Expired - Lifetime JP3178800B2 (en) | 1997-04-25 | 1997-04-25 | Relay water receiving device for fire pumps |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3178800B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1213038A1 (en) * | 2000-08-12 | 2002-06-12 | St Mihiel S.A. | Fire hose comprising a safety device to prevent it from moving under the action of water ensuring its feeding |
| JP2003093536A (en) * | 2001-09-26 | 2003-04-02 | Tohatsu Corp | Mediation metal for fire pump |
| JP2014181556A (en) * | 2013-03-18 | 2014-09-29 | Fuji Heavy Ind Ltd | Fluid transfer system |
| CN117386631A (en) * | 2023-11-22 | 2024-01-12 | 济南宏林天怡实业有限公司 | Fire pump with intelligent automatic detection function |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4844715B2 (en) * | 2005-08-25 | 2011-12-28 | 澁谷工業株式会社 | Hybrid laser processing equipment |
-
1997
- 1997-04-25 JP JP10949697A patent/JP3178800B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1213038A1 (en) * | 2000-08-12 | 2002-06-12 | St Mihiel S.A. | Fire hose comprising a safety device to prevent it from moving under the action of water ensuring its feeding |
| FR2817760A1 (en) * | 2000-08-12 | 2002-06-14 | St Mihiel S A | FIRE HOSE COMPRISING A SAFETY DEVICE TO PREVENT IT FROM MOVING UNDER THE ACTION OF WATER ENSURING ITS FEEDING |
| US6745957B2 (en) | 2000-08-12 | 2004-06-08 | St-Mihiel S.A. | Fire hose nozzle comprising a safety device to prevent it from being displaced through the action of the water supplying it |
| JP2003093536A (en) * | 2001-09-26 | 2003-04-02 | Tohatsu Corp | Mediation metal for fire pump |
| JP2014181556A (en) * | 2013-03-18 | 2014-09-29 | Fuji Heavy Ind Ltd | Fluid transfer system |
| CN117386631A (en) * | 2023-11-22 | 2024-01-12 | 济南宏林天怡实业有限公司 | Fire pump with intelligent automatic detection function |
| CN117386631B (en) * | 2023-11-22 | 2024-03-08 | 济南宏林天怡实业有限公司 | Fire pump with intelligent automatic detection function |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3178800B2 (en) | 2001-06-25 |
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