JP3174374U - Swirl pump self-priming device and check vent valve - Google Patents
Swirl pump self-priming device and check vent valve Download PDFInfo
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Abstract
【課題】消防・ビルジポンプユニットの直接ビルジ吸引及び冷却海水ポンプの危急ビルジ吸引において、全閉鎖構造の電動機一体型横軸渦巻ポンプとT形逆止弁との連成姿における省スペースの特徴を生かし、簡潔な自吸装置を提供する。
【解決手段】直接ビルジ管4端末に逆止弁付き泥箱10と逆止抜気弁17を配し、喫水線下の正圧で該ビルジ管に充水・抜気しかつ吸引時の負圧では大気逆流入を阻止して本ポンプの自己呼び水機能を与え、危急ビルジ吸引逆止弁の入口端を吸口として逆止弁体下の残留空気量を局限し常時充水の本ポンプの過渡的混合気水を支障なく自吸、上下弁座に対応して浮球体を抜気・逆止弁体とした逆止抜気弁を具現、なお、主機関潤滑油ポンプユニットの吸引系に逆止弁を配し、初期呼び油による充油状態を保持して自吸運転を可能とする。
【選択図】図1[PROBLEMS] To take advantage of space-saving features in a combined form of a motor-integrated horizontal shaft centrifugal pump and a T-type check valve for direct bilge suction of a firefighting / bilge pump unit and emergency bilge suction of a cooling seawater pump. Provide a simple self-priming device.
SOLUTION: A mud box 10 with a check valve and a check vent valve 17 are arranged directly at the end of a bilge pipe 4, and the bilge pipe is filled and evacuated with a positive pressure under the water line, and a negative pressure at the time of suction. Will prevent the reverse inflow of the atmosphere and provide the self-priming function of this pump.The inlet end of the emergency bilge suction check valve is used as a suction port to limit the amount of residual air under the check valve body and make the transient charge of this pump constantly charged. Self-priming of air-fuel mixture without hindrance, non-returning air valve with floating and floating check valve body corresponding to the upper and lower valve seats, and non-returning to the suction system of the main engine lubricating oil pump unit A self-priming operation is made possible by providing a valve and maintaining the refueling state with the initial priming oil.
[Selection] Figure 1
Description
本考案は、主として船舶の海水系に使用する渦巻ポンプの自吸装置に係るものであり、陸上ポンプ設備一般においても適用可能である。 The present invention mainly relates to a self-priming device for a centrifugal pump used in a seawater system of a ship, and can be applied to general land pump facilities.
一般に船舶のビルジ・バラスト系や機関冷却系の海水ポンプは、流量が大きく構造簡単な大・中口径の渦巻ポンプ(以下、特記の他、本ポンプと呼ぶ)が使用されているが、無水運転(Dry-run)では自吸機能を持たないため、ビルジ(Bilge:船底残落水)排水等の吸上げに真空ポンプ等の自吸補助機構を付加し、船舶関係規則(日本海事協会等)が要求の「自己呼び水型」としている。 Generally, large and medium-diameter centrifugal pumps (hereinafter referred to as this pump) are used for seawater pumps for ship bilge and ballast systems and engine cooling systems. Since (Dry-run) does not have a self-priming function, a self-priming auxiliary mechanism such as a vacuum pump is added to the suction of bilge (Bilge) wastewater, etc., and ship-related regulations (Japan Maritime Association, etc.) It is the “self-priming type” of the request.
機関室、船倉等のビルジの吸引・排水には、消防・ビルジポンプが当てられ、電動機軸より摩擦クラッチ駆動の真空ポンプ又は圧縮空気駆動のエジェクタを付加して自吸補助(Priming)しており、前者は真空吸引水が本ポンプ内に到達して自吸運転(Wet-run)に移った時、吐出圧力が立上り自動的に該真空ポンプを切離し、後者は吸引水が本ポンプ内に到達する所要時間に設定のタイマ又は吐出圧力立上りで自動的に圧縮空気をを停め、それぞれ本ポンプの自吸補助を為しており、大型船では、本ポンプ吐出水で駆動のエダクタを装備し、ビルジ吸引・排水を行っている。 Fire engine and bilge pumps are applied to the bilge suction / drainage in engine rooms, holds, etc., and a self-priming assist (Priming) is provided by adding a friction clutch drive vacuum pump or compressed air drive ejector from the motor shaft. In the former, when the vacuum suction water reaches the inside of this pump and moves to the self-priming operation (Wet-run), the discharge pressure rises and the vacuum pump is automatically disconnected, and in the latter, the suction water reaches inside this pump. Compressed air is automatically stopped at the timer set at the required time or when the discharge pressure rises, and each pump is self-priming assisted. Large ships are equipped with eductors that are driven by the pump discharge water. Suction and drainage are performed.
なお、本ポンプに呼び水溜めタンクを付加してポンプ芯より高位に吸引口を配し、吸引管に負圧を与える自吸補助機構とした渦巻ポンプも市販されている。 In addition, a centrifugal pump is also commercially available as a self-priming assist mechanism in which a priming tank is added to this pump, a suction port is arranged higher than the pump core, and a negative pressure is applied to the suction pipe.
消防・ビルジポンプユニットは、消防・雑用ポンプ1台と消防・ビルジポンプ1台を並列設置してユニット構成されるが、本ポンプ及びその周りの諸弁も同一仕様の二重化補機ユニットの機能を持つ。 The firefighting / bilge pump unit is composed of one firefighting / miscellaneous pump and one firefighting / bilge pump installed in parallel, but this pump and the valves around it also have the function of a redundant auxiliary unit with the same specifications.
口径が大きい主機関の潤滑油ポンプにおいて、中・小型船では、主機関に装着(以下、機付と記載)の歯車ポンプと予備機の電動歯車ポンプが二重化補機ユニットを構成し、ポンプ自身が主機関底部のサンプタンク(Sump Tank:油受け)からの自吸機能を持っているが、低回転数(900rpm)のためポンプセットが大寸且つ精密加工の噛合摺動歯面保護のため吸引側に高メッシュの一次ストレーナを要し、大型船では、サンプタンクの油面下に羽根車を浸けて油浴とした長身の縦軸渦巻ポンプ2台を吐出側逆止弁付で配し、何れもかなりの設置スペースを占め、特に後者は立体的にも占有空間が大きい。 In the main engine lubricating oil pump with a large bore, in small and medium sized ships, the gear pump mounted on the main engine (hereinafter referred to as “equipped with the machine”) and the spare electric gear pump constitute a dual auxiliary unit, and the pump itself Has a self-priming function from the sump tank (oil receiver) at the bottom of the main engine, but because of the low rotation speed (900rpm), the pump set protects the meshing sliding tooth surface of large and precision machining. A high-mesh primary strainer is required on the suction side, and in large ships, two tall vertical centrifugal pumps with oil impellers immersed under the oil level in the sump tank are arranged with discharge-side check valves. , Both occupy considerable installation space, especially the latter occupies a large space.
既発明「特願2009−165327」(以下、既発明1と呼ぶ)及び「特願2011−48287」(以下、既発明2と呼ぶ)の電動機一体型横軸渦巻ポンプは、ポンプ周りの鉛直面に諸弁を集中配置してポンプ軸端側から操作・保守を可能且つ構造簡潔・省スペースのポンプユニットを提供するものであるが、ポンプセットが全閉鎖構造のため上述の真空ポンプ等に代る有効且つ簡潔な自吸補助機能の付加が望まれる。 The motor-integrated horizontal shaft centrifugal pumps of the prior invention “Japanese Patent Application No. 2009-165327” (hereinafter referred to as “Invention 1”) and “Japanese Patent Application 2011-48287” (hereinafter referred to as “Invention 2”) have a vertical surface around the pump. The valve unit can be operated and maintained from the end side of the pump shaft and can be operated and maintained with a simple structure and space-saving pump unit. An effective and simple self-priming assist function is desired.
消防・ビルジポンプユニットは、既発明1に記載の如くエダクタを標準装備し且つ既考案「実登3161757」(以下、既考案1と呼ぶ)のT形逆止弁との連成姿でユニット構成を簡潔化し、自吸機能をエダクタに集約可能であるが、機関室のビルジ吸引・排水系の内の直接ビルジ吸引は、冷却海水ポンプの危急ビルジ吸引と同様に、緊急排水機能として本ポンプでの直接自吸が求められる。 The fire fighting / bilge pump unit is equipped with an eductor as described in the previous invention 1 and has a unit configuration in combination with the T-type check valve of the “developed 3161757” (hereinafter referred to as the existing device 1). Although it can be simplified and the self-priming function can be integrated into the eductor, the direct bilge suction in the bilge suction / drainage system of the engine room is the emergency drainage function of this pump, similar to the emergency bilge suction of the cooling seawater pump. Direct self-priming is required.
機関室の二重底上に設置の本ポンプの水理条件として、船倉(Cargo Hold)又は液槽(Cargo Tank)の空荷においても本ポンプは常に喫水線下で数メートル以上の正圧を受け、ビルジ吸引時は数メートルの負圧で運転することに着目し、以下に述べる手段を講ずる。 As a hydraulic condition of this pump installed on the double bottom of the engine room, this pump always receives positive pressure of several meters or more under the waterline even in an empty cargo hold (Cargo Hold) or liquid tank (Cargo Tank). Focusing on driving at a negative pressure of several meters during bilge suction, the following measures are taken.
なお、主機関の潤滑油ポンプ(以下、特記の他、本ポンプと呼ぶ)は、高速回転で小寸且つ摺動部分を持たない渦巻ポンプが一次ストレーナ不要のため系統簡潔・省スペースに有利であり、その吸引条件は、サンプタンクの油面が二重底上板に近く、上述の直接ビルジ吸引及び危急ビルジ吸引と同様に、渦巻ポンプでの自吸条件が考えられる。 The main engine lubricating oil pump (hereinafter referred to as this pump, in addition to special notes) is advantageous in terms of system simplicity and space saving because a spiral pump that does not have a sliding part with a small size and high speed rotation is not required. The suction condition is such that the oil level of the sump tank is close to the double bottom upper plate, and the self-priming condition with the spiral pump is conceivable as in the above-described direct bilge suction and emergency bilge suction.
[直接ビルジ系] 直接ビルジ吸引系の逆止弁をビルジ溜め(Bilge Well)に配した泥箱(Mud Box:濾板内蔵)に装着し、本ポンプ吸引口に若干長の吸引配管を施して直接ビルジ管(以下、特記の他、ビルジ管と呼ぶ)とし、呼び水管に利用する。 [Direct bilge system] A check valve for the direct bilge suction system is installed in a mud box (Mud Box: built-in filter plate) arranged in the bilge well (Bilge Well), and a slightly long suction pipe is applied to the pump suction port. Direct bilge pipe (hereinafter referred to as bilge pipe)
ビルジ管は、泥箱及び尾管を含む逆止弁の弁体下からビルジ溜めの最低水面に至る残留空気体積より大きく且つ本ポンプ始動時間(一般に直入れ始動で約1秒)以上の呼び水吸引に見合う管路長(約2m以上)とし、途中を低くしてU字管状に配管する。 The bilge pipe is larger than the residual air volume from the bottom of the check valve including the mud box and tail pipe to the lowest water surface of the bilge reservoir, and the priming water suction is longer than this pump start time (generally about 1 second for direct injection start). The length of the pipe (approx. 2m or more) is suitable, and the middle is lowered and piped in a U-shape.
本ポンプケーシングの吸引部及びビルジ管の最高部位(逆止弁側の管端部)に逆止抜気弁を装着し、本ポンプの取水弁を開いて本ポンプ内と共にビルジ管に喫水線下の正圧で抜気(空気抜き)しながら充水し、充水完了時に抜気弁体が自動閉鎖するよう構成する。 Attach a check vent valve to the suction part of the pump casing and the highest part of the bilge pipe (the end of the check valve side), open the intake valve of the pump, and put the bilge pipe inside the pump along the draft line. The water is filled while venting at positive pressure (venting air), and the vent valve is automatically closed when filling is completed.
消防高圧水やエダクタ駆動水供給のための本ポンプ運転中は、取水系の損失水頭が軽少であり、本ポンプは喫水線下の正圧による押込み吸引のため、ビルジ管内の正圧と抜気弁体の閉鎖を保つ。 During operation of this pump for supplying high-pressure water for firefighting and eductor-driven water, the head loss of the intake system is small, and this pump pushes and sucks in with positive pressure under the draft line, so the positive pressure in the bilge pipe and the exhaust air are discharged. Keep valve body closed.
本ポンプは、軸封シールの潤滑(メカニカルシールの摺動面損傷防止と寿命保持)のため、無水空転を避けるべきであり、本船の運行中(航海、荷役、停泊)は、消防・雑用(甲板・錨鎖洗浄等)の給水、通常の各種ビルジ吸引及び満載時バラスト残水吸引(Stripping)におけるエダクタ駆動水の給水の日常運転により、本ポンプと直接ビルジ管は勿論、吐出側の諸管も常時充水される。 This pump should avoid anhydrous idling due to lubrication of the shaft seal (prevents sliding surface damage of the mechanical seal and maintains its life). During operation of the ship (voyage, cargo handling, berthing) (Deck / chain wash etc.), normal various bilge suction, and daily operation of eductor drive water supply in full load ballast residual water suction (Stripping), this pump and direct bilge pipe as well as various pipes on the discharge side Always filled with water.
なお、本ポンプの日常運転により諸管内水が更新され、取水元弁前の海水箱(Sea Chest)に設置の海洋生物付着防止装置(Marin Grow Protection System:MGPS)の薬液により諸管内を保護される。 In addition, the water in each pipe is renewed by daily operation of this pump, and the inside of each pipe is protected by the chemical solution of the marine organism adhesion prevention device (MGPS) installed in the sea chest (Sea Chest) in front of the intake valve. The
[作用] 上述の充水状態で泥箱装着の逆止弁を開き(弁体は重力閉鎖)、取水弁を閉じ排水弁を開いて本ポンプを始動すれば、ビルジ管の呼び水が始動時間中に加速されて泥箱・尾管に充分な負圧を生じ、ビルジ溜めから吸上げる。 [Action] Open the check valve attached to the mud box in the above-mentioned water filling state (the valve body is closed by gravity), close the intake valve, open the drain valve, and start this pump. Accelerates to generate sufficient negative pressure in the mudbox and tailpipe and sucks it up from the bilge reservoir.
本ポンプで付勢されたビルジ管内の呼び水は、本ポンプ吐出側の排水管内水に続き排水弁を経て舷外排水に至り、始動後に泥箱・尾管の空気塊が本ポンプを通るが、始動末期の本ポンプで全速に加速された呼び水及び排水管内水の慣性でビルジ管内負圧を続け、ビルジが本ポンプに達して定常吸引・排水に至る。 The priming water in the bilge pipe energized by this pump reaches the outside drainage via the drainage valve following the drainage pipe water on the discharge side of this pump, and the air mass in the mudbox and tail pipe passes through this pump after starting, The negative pressure in the bilge pipe continues due to the inertia of the priming water and the drainage pipe water accelerated at full speed by the final pump at the end of start-up, and the bilge reaches the pump and reaches steady suction and drainage.
ビルジ吸引中は、その負圧のため上述の逆止抜気弁の逆止弁体が働き、ビルジ管への大気の逆流入を阻止する。 During the bilge suction, the check valve body of the above-described check vent valve works due to the negative pressure, thereby preventing the reverse flow of the atmosphere into the bilge pipe.
[逆止抜気弁] 逆止抜気弁は、縦姿勢の円筒の上下両端に円錐形の弁座を配し、円筒内径より小さく水より軽い球体を弁体とし、上下の弁座にそれぞれ対向させて抜気弁体及び逆止弁体とし、両球体の間に球体径の邪魔板を、その外周に充分な流体通路の開口を採って円筒の上下中間に固定し、下記の作用を持つよう構成する。 [Check air release valve] The check air release valve has conical valve seats at the upper and lower ends of a vertically oriented cylinder, and a sphere smaller than the inner diameter of the cylinder and lighter than water is used as the valve body. The evacuation valve body and the check valve body are opposed to each other, and a baffle plate having a sphere diameter is secured between the spheres, and a sufficient fluid passage opening is provided on the outer periphery of the sphere to fix the cylinder in the middle of the upper and lower sides. Configure to have.
なお、上部弁座の上部に、バネ付きの突き棒を配し上部弁体を押し下げて抜気チェック(抜気未完では空気が、完了では水が流出)を可能とし、横に逆L字の抜気管を設ける。 In addition, a thrust rod with a spring is placed on the top of the upper valve seat, and the upper valve body is pushed down to enable degassing check (air is incomplete when degassing is completed, water flows out when complete). Provide an evacuation tube.
逆止抜気弁の下端を本ポンプ及びビルジ管の上に、直接(或いはコックを介して)装着する。 The lower end of the check vent valve is mounted directly (or via a cock) on the pump and bilge pipe.
[作用] ビルジ管に注水中には、喫水線下の正圧で逆止弁体が押上げられて開き、空気が邪魔板の外周開口を通って抜気弁体の外周を通り抜け、上部弁座を通り抜気管を経て大気中に放出される。 [Operation] When water is poured into the bilge pipe, the check valve body is pushed up and opened by the positive pressure under the water line, and the air passes through the outer periphery of the baffle plate and passes through the outer periphery of the exhaust valve body. It is discharged into the atmosphere through the exhaust pipe through
抜気末期に円筒内上部に水が上がると、抜気弁体が浮上して上部弁座に当たり喫水線下の正圧で押付けられて止水し、その過渡期に噴き出た水は抜気管でビルジ溜め開口に落ち、逆止弁体は邪魔板直下に留まる。 When water rises in the upper part of the cylinder at the end of exhalation, the exhalation valve body rises, hits the upper valve seat, is pressed by positive pressure below the water line, and stops water. It falls into the bilge reservoir opening and the check valve body stays directly under the baffle plate.
ビルジ吸引中には、本ポンプの吸引負圧で逆止弁体が下降し、下部弁座に押付けられて止水し、その過渡期に抜気弁体が上部弁座から引離され、次のビルジ管充水時の抜気に備える。 During bilge suction, the check valve body descends due to the negative suction pressure of this pump and is pressed against the lower valve seat to stop water.In the transition period, the vent valve body is pulled away from the upper valve seat. Prepare for venting when filling bilge pipes.
上述のビルジ吸引操作は、泥箱装着の逆止弁を開き(弁体自重閉鎖)本ポンプを始動するものとしたが、取水弁及び排水弁を開いて本ポンプをアイドル運転し取水弁を閉じれば、本ポンプの吐出側排水管路内水の全速慣性が加わり、より確実なビルジ吸引を得ることができる。 In the above bilge suction operation, the check valve attached to the mud box was opened (valve body weight closed) and the pump was started. However, the intake valve and drain valve were opened and the pump was idled to close the intake valve. For example, the full-speed inertia of the water in the discharge side drain pipe of this pump is added, so that more reliable bilge suction can be obtained.
喫水線下の正圧は、最低水位として空荷喫水を、最高水位として満載喫水を採り、前者(数メートル)で確実に作動し、後者(10m前後)において抜気弁体の弁座接触強度を充分採り、ビルジ吸引時の負圧は、通常は数メートルであるが呼び水に続く負圧空気塊通過時の本ポンプの過渡現象を考慮し、真空(−10m)において逆止弁体の弁座接触強度を充分に設計する。 The positive pressure below the water line is taken as an empty draft as the lowest water level and a full draft as the highest water level. The former (several meters) operates reliably, and the valve seat contact strength of the vent valve body is increased in the latter (around 10 m). Adequately, the negative pressure when sucking bilge is usually several meters, but considering the transient phenomenon of this pump when passing negative pressure air mass following priming water, the valve seat of the check valve body in vacuum (-10m) Design the contact strength sufficiently.
[別案:要検討] 別案として、邪魔板を廃して抜気弁体を逆止弁体に共用し、下部弁座下を曲線的に緩拡し空気流を円筒断面内に拡散させて弁体下の空気流速を減速し、弁体跳び上がりでの上部弁座閉鎖を避ける構成が考えられ、取水弁開操作時の充水流入速度の立上り状況から、下部弁座からの突風的集中空気流等の過渡現象を実験確認等の検討を要する。 [Alternative: Study required] As an alternative, the baffle plate is abolished and the vent valve is shared with the check valve, and the lower valve seat is slowly expanded in a curved manner to diffuse the air flow into the cylindrical section. It may be possible to reduce the air flow velocity under the valve body and avoid closing the upper valve seat when the valve body jumps up. From the rising situation of the charging water inflow rate during the intake valve opening operation, gusty concentration from the lower valve seat It is necessary to examine and confirm transient phenomena such as airflow.
[危急ビルジ系] 以上、消防・ビルジポンプユニットの直接ビルジ吸引・排水における本ポンプの自吸装置の構成を述べたが、機関冷却装置の冷却海水ポンプユニットにおける危急ビルジ系統においては、より簡潔な自吸機能を与えることができる。 [Emergency Bilge System] The configuration of the self-priming device of this pump in the direct bilge suction / drainage of the fire fighting / bilge pump unit has been described above, but the emergency bilge system in the cooling seawater pump unit of the engine cooling device has a simpler self Can give a sucking function.
冷却海水ポンプユニットは航海上重要補機としてポンプ2台(常用・予備)を以って二重化され、内1台(一般に予備機)の吸引側に常用の取水弁と危急ビルジの吸引逆止弁を配し、通常はポンプ2台とも取水弁及び吐出逆止弁を開き、1台(常用機)を運転し他方の1台(予備機)は吐出逆止弁の弁体で逆流を阻止しており、電気的操作のみで常用・予備の切替可能とするため両ポンプ共常に充水状態にあり、危急吸引逆止弁の弁体上まで充水されている。 The cooling seawater pump unit is duplexed with 2 pumps (normal / spare) as important navigational devices on the voyage, and a normal intake valve and an emergency bilge suction check valve on the suction side of one (generally, spare) Normally, both the two pumps open the intake valve and the discharge check valve, operate one (normal machine), and the other (preliminary machine) prevents the reverse flow with the valve of the discharge check valve. Both pumps are always in a water-filled state so that they can be switched between normal use and standby only by electric operation, and the valve body of the emergency suction check valve is filled up.
上述の消防・ビルジポンプと同様に、冷却海水ポンプにおいても、本ポンプ内の吸引側に逆止抜気弁を配し、本船運行中は完全に充水する。 As with the above-described firefighting / bilge pumps, the cooling seawater pump is also provided with a check vent valve on the suction side of the pump, so that the water is completely charged during the operation of the ship.
危急吸引逆止弁は、関係規則に従い、その吸口が二重底上板より100mm高に配し、尾管を付加せず弁体下の残留空気体積を局限且つ危急吸引管長短縮がポンプユニットの省スペース上望ましく、該逆止弁のハンドルは本ポンプ前(ポンプ軸端側のケーシングカバー開放可能)の操作床高で開閉操作し易い高さに設置し、床上460mm以上を要求する船級等必要に応じハンドル軸延長で対応する。 The emergency suction check valve has a suction port that is 100 mm higher than the double-bottom top plate in accordance with the relevant rules, and the residual air volume under the valve body is limited and the critical suction pipe length is shortened without adding a tail pipe. It is desirable to save space, and the handle of the check valve is installed at a height that is easy to open and close with the operation floor height in front of this pump (the casing cover on the pump shaft end side can be opened), and a class that requires 460 mm or more above the floor is required. Corresponding to handle shaft extension according to.
[作用] 機関室事故等で浸水が二重底上板上100mm以上に達した時、危急吸引逆止弁を開き取水弁を閉じれば該逆止弁体上の充水が呼び水となり、該逆止弁の弁体下の残留空気を介して有効な吸引負圧を生じ、本ポンプ吐出し側の冷却海水の慣性と相俟って進水を吸上げ、本ポンプは該残留空気の通過に伴う過渡現象(既水混合)を経て定常吐出に至る。 [Action] When the inundation reaches 100 mm or more on the double bottom upper plate due to an engine room accident or the like, if the emergency suction check valve is opened and the intake valve is closed, the water on the check valve body becomes the priming water and the reverse Effective suction negative pressure is generated through the residual air under the valve body of the stop valve, sucking up the launch in combination with the inertia of the cooling seawater on the discharge side of the pump, and the pump Through the accompanying transient phenomenon (already mixed with water), steady discharge is reached.
該逆止弁体下の残留空気体積は本ポンプのケーシング満水量より格段に小さく(約1/10)、本ポンプ始動初期の吸引負圧で該逆止弁体が開き、該残留空気がケーシング内に先行しても気水混合比は小さく自吸機能を維持し、加速に伴い該逆止弁周りの侵水を自吸・排水する。 The volume of residual air under the check valve body is much smaller than the pump full volume of the pump (about 1/10), and the check valve body is opened by the suction negative pressure at the initial stage of starting the pump. Even if it precedes the inside, the air-water mixture ratio is small, and the self-priming function is maintained.
[系統改善] 事故等の浸水の危急吸引・吐出水は、異物混入や浸水高100mm以下に低下時の本ポンプ空転の機関冷却系(主機関及び発電機関)への悪影響を避けるため、関係規則での要求はないが、前述の消防・ビルジポンプの直接ビルジ吸引・排水と同様に、本ポンプの吐出側に危急排水弁及び管を付加して直接舷外排水し、他の1台の本ポンプを追加始動して取水弁経由の定常冷却海水を機関冷却系に供給継続が必要と考える。 [System improvement] In order to avoid adverse effects on the engine cooling system (main engine and power generation engine) of this pump idling when the emergency suction / discharge water of accidents, etc. is contaminated with foreign matter or the inundation height falls below 100mm Although there is no request in the same way, in the same way as the direct bilge suction / drainage of the firefighting / bilge pump described above, an emergency drain valve and pipe are added to the discharge side of this pump and directly drained outside the tank, and the other one main pump It is considered necessary to continue supplying the engine cooling system with the steady cooling seawater via the intake valve.
[潤滑油系] 中・小型船での機付歯車ポンプや大型船の羽根車油浴での縦軸渦巻ポンプの代りに、横軸渦巻ポンプ2台で潤滑油ポンプユニットを構成し、本ポンプは標準的な回転数1800rpm(4極電動機駆動)のもの使用し、吐出側はアングル逆止弁及びT形逆止弁の連成姿且つ複合立体構成の自動逆洗機構付二次ストレーナ及び潤滑油冷却器(小容量機関では機付)を経て主機関の回転摺動部に供給する。 [Lubricating oil system] Instead of the geared gear pump in medium and small ships and the vertical axis centrifugal pump in the impeller oil bath of large ships, a lubricating oil pump unit is configured with two horizontal axis centrifugal pumps. Uses a standard rotation speed of 1800 rpm (4-pole motor drive), and the discharge side is composed of an angle check valve and a T-type check valve. It is supplied to the rotating sliding part of the main engine through an oil cooler (equipped with a small-capacity engine).
2台の本ポンプ(常用機、予備機)の吸引口にそれぞれ吸引弁(バタフライ弁)を配し、サンプタンク近くの二重底上板に管端フランジ配して主吸引逆止弁を直付けし吸引主管で結び、該逆止弁の尾管をサンプタンクの液面下に配し弁体下の残留空気を局限する。 Suction valves (butterfly valves) are arranged at the suction ports of the two main pumps (regular machine and spare machine), and the pipe end flange is arranged on the double bottom upper plate near the sump tank to directly adjust the main suction check valve. It is connected with a suction main pipe, and the tail pipe of the check valve is placed under the liquid level of the sump tank to localize the residual air under the valve body.
本ポンプの吐出口に近くにそれぞれ小径の注油弁とその間にT形逆止弁(双出口間は通過流路)を配して注油弁組を成し、近接の潤滑油移送ポンプ或いは手動ポンプで注油して初期呼び油(Initial Priming)とし、吐出管最高部位にコックを配し抜気管をサンプタンクに導く。 A small-diameter oil supply valve and a T-type check valve (passage passage between the two outlets) are arranged near the discharge port of this pump to form an oil supply valve assembly, and a nearby lubricating oil transfer pump or manual pump Lubricate the pipe to the initial priming, place a cock at the highest part of the discharge pipe, and guide the bleed pipe to the sump tank.
[作用] 初期呼び油により本ポンプ2台(常用機・予備機)とも吸引弁及び吐出逆止弁とも開いて初期呼び油を充油し、運転・待機を電気的操作のみで切替可能とし、主吸引逆止弁で呼び油保持(Priming Keep)する。 [Action] With the initial priming oil, both the two pumps (usual machine / spare machine) and the suction valve and the discharge check valve are opened to fill the initial priming oil so that operation and standby can be switched only by electrical operation. Use the main suction check valve to hold priming.
本ポンプを始動すれば、主吸引逆止弁の弁体下残留空気が吸引主管を経て本ポンプに達するが、前述の直接ビルジや危急ビルジと同様に、吸引主管通過中に本ポンプが加速して定常運転に達し且つ気油混合比が小さいため本ポンプの自吸に支障なく、抜気コックを操作し抜気管で気油混合液をサンプタンクに戻し、以後の運転において、本ポンプは自吸機能を持つ。 When this pump is started, the residual air under the valve body of the main suction check valve reaches the main pump through the suction main pipe, but this pump accelerates while passing through the main suction pipe as in the case of the direct bilge and emergency bilge mentioned above. Therefore, since the air / oil mixture ratio is small and the self-priming of the pump is not hindered, the gas-oil mixture is returned to the sump tank by operating the venting cock and the venting pipe. Has a sucking function.
本船入港着岸して主機関停止に伴う本ポンプ停止後は、吸引逆止弁により自吸保持(Priming Keep)され、油の粘性が寄港中の弁体漏洩を抑え、ハンドル閉鎖すれば停泊中長時間の自吸保持も可能である。 After stopping the main pump when the main engine stops at the ship's port, the suction check valve keeps itself sucking (Priming Keep), and the viscosity of the oil suppresses the leakage of the valve body while calling at the port. Self-priming of time is also possible.
本ポンプ(例えば常用機)の内部点検や軸封シール取替等で開放の際は、他方のポンプ(例えば予備機)に切替え送油継続状態とし、本ポンプの吸引弁・吐出逆止弁を閉鎖し排油して作業し、終了・復旧後は本ポンプの吸引弁及び吐出逆止弁を開き、運転中の他方のポンプから注油弁組を経て再充油し、電気的操作で本ポンプの運転に切替え、上述の抜気操作を行う。 When this pump (for example, a regular machine) is opened due to internal inspection or replacement of the shaft seal, etc., switch to the other pump (for example, a spare machine) and keep the oil feed continued. Close and drain the oil, and after completion and recovery, open the suction valve and discharge check valve of this pump, refill the oil through the lubrication valve assembly from the other pump in operation, and electrically pump this pump Switch to the above operation and perform the above-described venting operation.
以上述べた本考案の構成による効果を以下に説明する。 The effect by the structure of this invention described above is demonstrated below.
消防・ビルジポンプユニットの直接ビルジ及び冷却海水ポンプユニットの危急ビルジの吸引・排水において、逆止抜気弁の自動抜気により、喫水線下の本ポンプとビルジ管の充水が有効な呼び水となり、本ポンプ始動或いは定常運転中のビルジ吸引への切替により、該呼び水が本ポンプの吐出し側の管内水と共に加速されて慣性を持ち、本ポンプとビルジ管路及び吐出管路がポンプユニット全体として有効且つ簡潔な自吸装置となり、関係規則(日本海事協会等)に規定の「自己呼び水型:Self-Priming Type」を満足する。 In the suction and drainage of the direct bilge of the fire fighting / bilge pump unit and the emergency bilge of the cooling seawater pump unit, the automatic venting of the check vent valve makes the filling of the pump and bilge pipe under the water line effective priming water. By switching to bilge suction during pump start-up or steady operation, the priming water is accelerated together with pipe water on the discharge side of this pump and has inertia, and this pump, bilge pipe and discharge pipe are effective as a whole pump unit In addition, it becomes a simple self-priming device and satisfies the “Self-Priming Type” specified in the relevant regulations (Japan Maritime Association, etc.).
本ポンプ及びビルジ管の充水の検知とビルジ吸引時の逆流阻止を司る逆止抜気弁は、円筒の上下端に弁座及び球形の空気抜き弁体と逆止弁体を持つ複球形(或いは両弁体を共通の球体とした単球形)の小型・簡潔な構造であり、本ポンプの吸引側に装着のため空荷喫水線下の数メートル乃至満載喫水線下の10m前後の正圧とビルジ吸引の数メートルの負圧で作動し、耐圧強度は軽少で済み作動信頼度及び耐久性が高く、既発明1及び既発明2の横向双吸引口の電動機一体型横軸渦巻ポンプの全閉鎖構造と既考案1のT形逆止弁との連成姿による著しい省スペースのポンプユニット構成に適用することができる。 The check air release valve that controls the detection of water filling of the pump and the bilge pipe and the backflow prevention at the time of bilge suction is a double spherical shape (or a valve seat and a spherical air release valve body and check valve body at the upper and lower ends of the cylinder) It is a small and simple structure with a single sphere with both valve bodies as a common sphere, and it is attached to the suction side of this pump. It operates with a negative pressure of several meters, with a low pressure strength, high operational reliability and high durability, and a fully-closed structure of the horizontal twin-swivel pump with integrated double suction port of the inventions 1 and 2 And the T-type check valve of the first device can be applied to a space-saving pump unit configuration.
主機関潤滑油ポンプユニットでは、初期呼び油による自吸機能の付与により小寸の横軸渦巻ポンプが使用でき且つ中・小型船の歯車ポンプでの一次ストレーナが不要となって系統簡潔になり、大型船の油浴縦軸ポンプの如き設置スペースが不要になって機関室が短縮でき、本ポンプが通路床下に収まるため床上に二次ストレーナ及び潤滑油冷却器(小型船では機付)を配して立体的複合ユニットを構成し、機関室空間を有効利用できる。 In the main engine lubricating oil pump unit, the self-priming function by the initial nominal oil can be used, so that a small-sized horizontal axis centrifugal pump can be used, and the primary strainer is not required for the gear pumps of small and medium-sized ships. The installation space such as the oil bath vertical axis pump of a large ship is no longer required, and the engine room can be shortened. Since this pump fits under the passage floor, a secondary strainer and a lubricating oil cooler (equipped with a small ship) are installed on the floor. Thus, a three-dimensional composite unit can be configured to effectively use the engine room space.
前述の如くポンプユニット構成における本ポンプ内吸引側及びビルジ管に喫水線下の正圧で常時充水して本ポンプに自己呼び水機能を与えた自吸装置について、実施例1として消防・ビルジポンプユニットの直接ビルジ吸引・排水系を、実施例2としてビルジ管の逆止抜気弁を、実施例3として冷却海水ポンプユニットの危急ビルジ吸引・排水系を、実施例4として主機関潤滑油ポンプユニットの吸引系を、それぞれ図面を参照し説明する。 As described above, the self-priming device in which the self-priming function is given to the pump by constantly filling the suction side of the pump and the bilge pipe with a positive pressure below the water line and giving the self-priming function to the pump in the pump unit configuration as described above. Direct bilge suction / drainage system as example 2, bilge pipe check vent valve as example 2, critical bilge suction / drainage system as cooling seawater pump unit as example 3, and main engine lubricating oil pump unit as example 4 The suction system will be described with reference to the drawings.
[系統構成] 図1において、本考案の直接ビルジの吸引・排水系を示せば、図1(a)は、消防・ビルジポンプユニットの吸引系の平面姿を、図1(b)は、直接ビルジ管の正面姿(A−A矢視)を抽出図示する(但し、本ポンプ吐出側の諸弁すなわち消防水、エダクタ駆動水及び舷外排水用逆止弁は一般的諸管系統を成しているので図示省略)。 [System configuration] In FIG. 1, if the direct bilge suction / drainage system of the present invention is shown, FIG. 1 (a) shows the plan view of the suction system of the fire fighting / bilge pump unit, and FIG. 1 (b) shows the direct bilge The front view of the pipe (A-A arrow view) is extracted and illustrated (however, the valves on the discharge side of this pump, that is, the fire-fighting water, the eductor drive water, and the check valve for drainage outside the water form a general pipe system) The illustration is omitted).
2台の本ポンプ1の外向の吸引口2は、それぞれT分岐管3、直接ビルジ管4を経て機関室前部両舷のビルジ溜めBWに配した泥箱5に装着の逆止弁V8に接続し、直接ビルジ吸引系をなしており、左舷側について、泥箱5及び尾管6と逆止弁V8の弁体下を点線斜線で、本ポンプ1、T分岐管3、直接ビルジ管4及び逆止弁V8の弁体上を実線斜線でそれぞれ示す。 The outward suction ports 2 of the two main pumps 1 are connected to a check valve V8 attached to a mud box 5 arranged in a bilge reservoir BW on both sides of the engine room through a T branch pipe 3 and a direct bilge pipe 4, respectively. Connected to form a direct bilge suction system. On the port side, the pump 1, T branch pipe 3, direct bilge pipe 4 below the mud box 5, tail pipe 6 and check valve V8 under the check valve V8 And the valve body of the check valve V8 is shown by a solid line slanted line.
右舷側については、本ポンプ1の外向吸引口2にT分岐管3を配し、直接ビルジ管4(鎖線図示)は、関係規則では後述の冷却海水ポンプユニットの危急ビルジ吸引系に代えて省略し、或いは本船の必要に応じ左舷側と同様に追設できるものとし、図示省略する。 On the starboard side, a T-branch pipe 3 is arranged at the outward suction port 2 of the pump 1, and the direct bilge pipe 4 (shown by a chain line) is omitted in place of an emergency bilge suction system of a cooling seawater pump unit, which will be described later. Alternatively, it can be added as needed on the port side as necessary for the ship, and is not shown.
本ポンプ1の外向側吸引口2に配したT分岐管3に取水弁V1Aを介して、冷却海水ポンプと共用の取水主管7に接続、以下、既発明1に記載の取水支弁、バラストポンプと共用の集約ストレーナ及び取水元弁を経て、海水箱から舷外海水を取水する。 The T branch pipe 3 arranged in the outward suction port 2 of the pump 1 is connected to the intake main pipe 7 shared with the cooling seawater pump via the intake valve V1A. Take the seawater from the seawater box through the common intensive strainer and intake valve.
該T分岐管3に弁V1Bを経て本ポンプ1の下(電動機支台)を通るビルジ主管8に接続、左舷側の弁V9を経て機関室内の共通ビルジ主管9を配し、上述のビルジ溜めBWに設置の小径の逆止弁付泥箱10の如く、各種ビルジ溜めや船底空所のビルジ吸引逆止弁付泥箱に至り、右舷側の弁V10を経て船倉ビルジ主管11を配し船倉及び船首の船底ビルジ吸引系に至る。 The T branch pipe 3 is connected to the bilge main pipe 8 passing under the pump 1 via the valve V1B (electric motor abutment), and the common bilge main pipe 9 in the engine room is arranged via the port side valve V9. Like the small-diameter check valve mud box 10 installed on the BW, it reaches various bilge reservoirs and mud boxes with a bilge suction check valve at the bottom of the ship, and via the starboard side valve V10, the ship bilge main pipe 11 is arranged and the hold. And the bottom bilge suction system at the bow.
両ポンプ1の対向側吸引口2に弁V1Cを配し、T分岐管12を経てバラスト主管及び船尾タンクの注排水管13に接続し、本船満載時のバラスト排水の残水吸上げ(Stripping)とバラストポンプの自吸補助(Priming)の系統を成す。 Valve V1C is arranged at the suction port 2 on the opposite side of both pumps 1 and connected to the ballast main pipe and the sewage pipe 13 of the stern tank via the T-branch pipe 12 to absorb the remaining water of the ballast drainage when the ship is fully loaded (Stripping) And a self-priming system for ballast pumps.
注排水管13から逆止弁V13を、ビルジ主管6からT形逆止弁V14(双出口90度方向形)をそれぞれ経て、エダクタ14の側部の吸引口に連成弁姿で接続し且つ下記の逆止弁V12を経て下部の駆動水口に接続し、2台の本ポンプ1の間に収める。 The drainage pipe 13 is connected to the check valve V13, the bilge main pipe 6 is connected to the suction port on the side of the eductor 14 in the form of a coupled valve through the T-shaped check valve V14 (double outlet 90 degree direction type), and It connects to the lower drive water port through the following check valve V12, and is stored between the two main pumps 1.
本ポンプ1の吐出口15の上には逆L字形の多分岐管16を立て、それぞれに逆止弁V11、V12及びV4を消防水用、エダクタ駆動水用及び舷外排水用として配する(消防・ビルジポンプユニットとして標準的な系統構成のため図示省略)。 On the discharge port 15 of the pump 1, an inverted L-shaped multi-branch pipe 16 is erected, and check valves V11, V12, and V4 are disposed for fire fighting water, eductor driving water, and outside drainage water, respectively ( (The illustration is omitted for the standard system configuration of a firefighting / bilge pump unit).
本ポンプ1のケーシング吸引部と直接ビルジ管4の最高部位に、それぞれ逆止抜気弁17を装着し、本船運行中の消防高圧水での錨鎖洗浄やエダクタ14での各種ビルジ吸引等の通常の本ポンプ1の運転で、取水弁V1Aを開いて本ポンプ1及び直接ビルジ管4に喫水線下の正圧H[m:正水頭高]で充水し逆止抜気弁17で抜気して呼び水を成し、本ポンプ1の吐出側にも該正圧H又は吐出圧で充水する。 A non-returning air release valve 17 is mounted on the casing suction part of the pump 1 and the highest part of the bilge pipe 4 respectively, and normal chain cleaning with fire-fighting high-pressure water during operation of the ship and various bilge suctions with the eductor 14 are performed. In the operation of the main pump 1, the intake valve V1A is opened, the main pump 1 and the bilge pipe 4 are filled with a positive pressure H [m: positive head height] below the water line, and the check vent valve 17 is evacuated. The discharge water of the pump 1 is filled with the positive pressure H or the discharge pressure.
[作用] 取水弁V1Aを閉じ、舷外排水用逆止弁(以下、排水弁と呼ぶ)V4と直接ビルジ用逆止弁V8を開き(弁体は正圧Hで閉鎖)本ポンプ1を始動すれば、本ポンプ1、直接ビルジ管4及び逆止弁V8の弁体上の充水(実線斜線図示)が呼び水となって、逆止弁V8の弁体下、泥箱5及び尾管6内の残留空気(点線斜線図示)に負圧を与え、逆止抜気弁17の逆止弁体が閉鎖して大気逆流を阻止し、ビルジ溜めBWから吸上げ、呼び水及び吐出水(多分岐管16の管内水)を加速し、呼び水が直接ビルジ管4を通過する前に本ポンプ1は始動完了し定常回転数に移行して呼び水及び吐出水は全速に至り、その慣性により泥箱5等の残留空気は本ポンプ1を過渡的に通過し、直接ビルジ吸引・排水の定常運転に至り、関係規則が求める本ポンプ1の「自己呼び水型」をポンプユニットとして満足する。 [Action] The intake valve V1A is closed, the outside drainage check valve (hereinafter referred to as drain valve) V4 and the bilge check valve V8 are opened directly (the valve body is closed at positive pressure H), and the pump 1 is started. Then, the water on the valve body of the main pump 1, the direct bilge pipe 4 and the check valve V8 (shown by the hatched line) becomes the priming water, and the mud box 5 and the tail pipe 6 below the valve body of the check valve V8. Negative pressure is applied to the residual air (shown by the dotted line), the check valve body of the check air release valve 17 is closed to prevent backflow in the atmosphere, sucked up from the bilge reservoir BW, priming water and discharge water (multi-branch) The pump 1 is started before the priming water passes directly through the bilge pipe 4 and the normal rotation speed is reached, and the priming water and the discharge water reach full speed. Residual air, etc. passes through the pump 1 transiently and directly leads to steady operation of bilge suction and drainage, and the relevant rules require To satisfy the "self-priming type" of the pump 1 as a pump unit.
なお、取水弁V1A及び排水弁V4を開き本ポンプ1をアイドル運転して取水・排水し、定常運転状態で取水弁V1Aを閉じれば、長管路の吐出水の全速慣性で、空気塊通過の本ポンプ1の過渡時間を局限しビルジ吸引するので、ビルジ管4が短くても差し支えない。 If the intake valve V1A and the drainage valve V4 are opened and the pump 1 is idled for water intake / drainage, and the intake valve V1A is closed in a steady operation state, the full-speed inertia of the discharged water in the long pipeline is passed through the air mass. Since the transient time of the pump 1 is limited and bilge suction is performed, the bilge pipe 4 may be short.
共通ビルジ、船倉ビルジ及びバラスト残水の吸引・排水は、本ポンプ1で駆動水供給のエダクタ14に機能集約するが、逆止弁V13を開いてエダクタで自吸補助し弁V1Bを開いて吸引水位を本ポンプ1に導いて呼び水とし、エダクタ14より高流量の本ポンプ1でバラスト残水の大部分を吸引・排水することができる。 The common bilge, Funakura bilge, and ballast residual water suction / drainage are concentrated in the pump water supply eductor 14 by this pump 1, but the check valve V13 is opened and the eductor is self-priming and the valve V1B is opened for suction. The water level can be guided to the main pump 1 as priming water, and most of the ballast residual water can be sucked and drained by the main pump 1 having a higher flow rate than the eductor 14.
[構成] 図2において、円筒101の上下端に円錐形の弁座102、103を持つ金物104、105を配し、下部金物105は本ポンプ1や直接ビルジ管4に配した取付座106にネジ込み(又はフランジ)で装着し、上部金物104にはバネ付き押し棒107及び逆L字形の抜気管108を付加する。 [Configuration] In FIG. 2, hardware 104 and 105 having conical valve seats 102 and 103 are arranged on the upper and lower ends of the cylinder 101, and the lower hardware 105 is attached to the mounting seat 106 disposed on the pump 1 and the bilge pipe 4 directly. Attached by screwing (or flange), a spring-loaded push rod 107 and an inverted L-shaped evacuation tube 108 are added to the upper hardware 104.
円筒101内に、水より軽い球体(材質:ポリプロピレン等)を2個、上下端の弁座102、103に対応して装入し抜気弁体109、逆止弁体110とし、周囲に開口112を持つ邪魔板111を円筒101の中間に配し、逆止抜気弁17を構成する。 Two spheres (material: polypropylene, etc.) that are lighter than water are inserted into the cylinder 101 corresponding to the valve seats 102 and 103 at the upper and lower ends, and the vent valve 109 and the check valve 110 are opened. A baffle plate 111 having 112 is arranged in the middle of the cylinder 101 to constitute a check vent valve 17.
円筒101内面と弁体109、110との隙間は、邪魔板111の周囲開口112と同等で弁座102、103の流体出入口113、114の口径を上回る断面積で流体(空気、水)通路を充分に与える。 The clearance between the inner surface of the cylinder 101 and the valve bodies 109 and 110 is equal to the peripheral opening 112 of the baffle plate 111 and has a cross-sectional area that exceeds the diameter of the fluid inlets and outlets 113 and 114 of the valve seats 102 and 103. Give enough.
邪魔板111は、弁体109、110を円筒101の軸芯に座位するよう中窪み又は3点突起を与え、中窪みの場合は流体滞留防止溝を付加し、周囲開口112の3ヵ所に突起115を以って円筒101に固定(栓溶接等)する。 The baffle plate 111 is provided with an indentation or a three-point protrusion so that the valve bodies 109 and 110 are seated on the axis of the cylinder 101. In the case of the indentation, a fluid retention preventing groove is added, and the protrusions are provided at three positions of the peripheral opening 112. 115 is fixed to the cylinder 101 (plug welding or the like).
[作用] ビルジ管4に充水時には、下部弁座103の入口114から流入の空気が逆止弁体110を吹上げるが邪魔板111で留められ、周囲開口112を減速通過の空気は抜気弁体109の周囲を通抜け上部弁座102の出口113及び抜気管108を経て大気中に排出される。 [Operation] When the bilge pipe 4 is filled with water, the air flowing in from the inlet 114 of the lower valve seat 103 blows up the check valve body 110 but is held by the baffle plate 111, and the air passing through the peripheral opening 112 is vented. It passes through the periphery of the valve body 109 and is discharged into the atmosphere through the outlet 113 of the upper valve seat 102 and the exhaust pipe 108.
抜気末期に空気が水に代り、円筒101内の水位が上がると抜気弁体109が浮力で弁座102に接触、喫水線下の正圧Hで押付けられ止水し、その過渡期の小噴出水は抜気管108で排出されビルジ溜めBWに落ち、逆止弁体110はその浮力で邪魔板111の直下に留まる。 When air is replaced by water at the end of the exhalation and the water level in the cylinder 101 rises, the exhalation valve body 109 comes into contact with the valve seat 102 by buoyancy and is pressed by the positive pressure H below the water line to stop the water. The jet water is discharged through the exhaust pipe 108 and falls into the bilge reservoir BW, and the check valve body 110 stays directly under the baffle plate 111 by its buoyancy.
ビルジ吸引でビルジ管4が負圧になると、直ちに逆止弁体110が降下して弁座103に吸付けられ止水し上部弁座102の出口113からの空気逆流入を阻止し、その過渡期の逆止弁体110の降下により抜気弁体109が強制引離しされ、次の抜気作動に備える。 When the bilge pipe 4 becomes negative pressure due to bilge suction, the check valve body 110 immediately descends and is sucked by the valve seat 103 to stop water and prevent reverse inflow of air from the outlet 113 of the upper valve seat 102. As the check valve body 110 is lowered, the vent valve body 109 is forcibly separated to prepare for the next venting operation.
ビルジ管4の正圧充水中に、押し棒107の上端を指で押すと、抜気弁体109を押し下げ抜気状態(抜気完了では抜気管108から水が、未完では空気が噴出)を確認することができる。 When the upper end of the push rod 107 is pushed with a finger during positive pressure filling of the bilge pipe 4, the vent valve 109 is pushed down to bring out an evacuated state (water is ejected from the evacuation pipe 108 when the evacuation is completed, and air is ejected when it is not completed) Can be confirmed.
[系統構成] 図3に示す、2台の本ポンプ1の並列設置で構成の冷却海水ポンプユニットにおいて、本ポンプ1の対向側吸引口2に取水弁V1を配し、T分岐管23及び取水管24で温度調整管(図示省略)と合流の上、前述の消防・ビルジポンプユニットと共用の取水主管7(図示省略)に接続、吐出口15に無ハンドルのT形逆止弁(双出口180度形)21の対向側出口22に配した吐出弁V2、T合流管25及び給水管26を経て主冷却系(潤滑油冷却器及び空気冷却器)に、T合流管25の少し下で給水管26から分岐し更に分岐の給水管27及び弁V3を経て副冷却系(清水冷却器28)にそれぞれ冷却海水を供給する。 [System Configuration] In a cooling seawater pump unit configured by parallel installation of two main pumps 1 shown in FIG. 3, a water intake valve V1 is arranged at the opposite suction port 2 of the main pump 1, and a T branch pipe 23 and an intake pipe are arranged. The water pipe 24 joins the temperature control pipe (not shown) and is connected to the water intake main pipe 7 (not shown) shared with the fire fighting / bilge pump unit described above, and has a handle-free T-type check valve (double outlet 180). Water) to the main cooling system (lubricant oil cooler and air cooler) via the discharge valve V2, the T merging pipe 25 and the water supply pipe 26 arranged at the opposite side outlet 22 of the normal shape) 21. Cooling seawater is supplied to the sub-cooling system (fresh water cooler 28) from the pipe 26 via the branched water supply pipe 27 and the valve V3.
右舷側の本ポンプ1(以下、必要に応じ、1号機と呼ぶ)の外向側吸引口2に、吸引管29を介して危急ビルジ吸引用逆止弁V1Eの入口30を、関係規則に従い、二重底上板TTP上100mm高さに設置する The inlet 30 of the emergency bilge suction check valve V1E is connected to the outward suction port 2 of the starboard side pump 1 (hereinafter referred to as “Unit 1” as needed) through the suction pipe 29 in accordance with the related rules. Installed at 100mm height above heavy bottom top plate TTP
危急吸引逆止弁V1Eは、関係規則で「操作し易い高さに設置」の要求あり、本ポンプ1の操作床OFL上のハンドル高で機能上は充分であるが、460mm以上を要求の船級協会があり、その場合は延長ハンドル軸で対応する。 The emergency suction check valve V1E is required to be “installed at an easy-to-operate height” according to the relevant rules. The handle height on the operation floor OFL of the pump 1 is sufficient for the function, but the classification requires 460 mm or more. There is an association, in which case it will be handled by an extended handle shaft.
左舷側の本ポンプ1(以下、必要に応じ、2号機と呼ぶ)の外向側吸引口2にT分岐管と2個の弁V1S、V1Cを配して切替え前者は前述の消防・ビルジポンプユニットと共用の取水主管7(図示省略)に接続、後者はバラスト主管(図示省略)に接続し、T形逆止弁21の外向側出口22に弁V2Cを配し、管33で中甲板MDK上のバラスト水処理装置(図示省略)に接続する。 A T-branch pipe and two valves V1S and V1C are arranged in the outward suction port 2 of the port-side main pump 1 (hereinafter referred to as “Unit 2” as needed). The former is the fire fighting / bilge pump unit described above. Connected to a common intake main pipe 7 (not shown), the latter connected to a ballast main pipe (not shown), a valve V2C is arranged at the outward outlet 22 of the T-type check valve 21, and a pipe 33 on the middle deck MDK Connect to a ballast water treatment device (not shown).
本ポンプの1号機、2号機とも、取水弁V1及び吐出弁V2を開き、何れかの本ポンプ(例えば1号機)を運転して主・副冷却系に冷却海水を供給し、他方(例えば2号機)を待機(Stand-by)とするので、両ポンプ1ともケーシングの吸引部は取水管24と共に喫水線下の正圧Hで充水し、吐出し側は正副冷却系と共に吐出圧で充水(給水)している。 In both Unit 1 and Unit 2 of this pump, the intake valve V1 and the discharge valve V2 are opened, one of the pumps (for example, Unit 1) is operated to supply cooling seawater to the main / sub cooling system, and the other (for example, 2) Since both pumps 1 are in stand-by mode, the suction part of the casing of both pumps 1 is charged with positive pressure H under the water line together with the intake pipe 24, and the discharge side is charged with discharge pressure together with the primary and secondary cooling systems. (Water supply).
[作用] 機関室の事故浸水が二重底上板TTP上100mm以上に達し、逆止弁V1Eを開き取水弁V1を閉じれば、本ポンプ1の吸引力で逆止弁V1Eの弁体(自重閉鎖)が開き残留空気(点線斜線図示)が吸引管29(実線斜線図示)を上昇して本ポンプ1を気水混合を齎すが該残留空気体積は本ポンプ1内の充満水の約10%程度でポンプ自吸機能を損なわず吐出側の流速による慣性が加わって侵水を吸引し、本ポンプ1は該気水混合の過渡期を経て定常吸引・供給運転に至る。 [Operation] If the accidental flooding in the engine room reaches 100 mm or more on the double bottom upper plate TTP, and the check valve V1E is opened and the intake valve V1 is closed, the valve body of the check valve V1E (self-weight) by the suction force of the pump 1 (Closed) opens and residual air (shown by the dotted line) rises up the suction pipe 29 (shown by the solid line) to cause the pump 1 to mix air and water, but the residual air volume is about 10% of the full water in the pump 1 The inertia due to the flow rate on the discharge side is added without impairing the self-priming function of the pump, and the water is sucked in. The pump 1 reaches the steady suction / supply operation through the transition period of the air-water mixing.
[慣習システムの問題と対策] 危急ビルジ吸引では、本ポンプ1の吐出側は主・副冷却系のままであり、逆止弁V1Eの弁体下の残留空気塊や異物の吸込みと、危急排水進行・浸水位低下での空気吸込みの該冷却系への悪影響を避けるため、関係規則に規定ないが、吐出側も実線斜線図示のようにT形逆止弁21の外向出口22に排水弁V2E、排水管31を配して舷外排水管32に接続し、本ポンプ1は2号機に切替え始動して該冷却系への冷却海水の定常供給を確保し、下記の手順で危急ビルジ吸引・排水を行う。 [Problems and countermeasures of customary systems] In the emergency bilge suction, the discharge side of the pump 1 remains the main / sub cooling system, the suction of residual air mass and foreign matter under the valve body of the check valve V1E, and emergency drainage In order to avoid an adverse effect on the cooling system due to air suction due to advancing and lowering of the water level, there is no provision in the related rules. The drainage pipe 31 is arranged and connected to the outside drainage pipe 32, and the pump 1 is switched to Unit 2 to start steady supply of cooling seawater to the cooling system. Drain the water.
1号機の本ポンプ1及びT形逆止弁21の外向側の逆止弁V1E、排水弁V2Eを開き本ポンプを始動すれば、始動進行に伴う負圧で逆止弁V1Eの弁体が開き、その下の残留空気(点線斜線図示)が吸引管29を経て本ポンプ1に至り過渡的な気水混合を経て定常回転数に達して吸引水及び排水管31の管内水(実線斜線図示)を全速まで加速し、定常吸引・排水に至る。 When the main pump 1 of the first unit and the check valve V1E and the drain valve V2E on the outward side of the T-type check valve 21 are opened and the pump is started, the valve body of the check valve V1E is opened by the negative pressure accompanying the start-up progress. Residual air underneath (shown with dotted lines) reaches the pump 1 through the suction pipe 29, reaches a steady rotational speed through transient air-water mixing, and reaches the steady rotation speed and the water in the pipe of the drain pipe 31 (shown with solid lines). Is accelerated to full speed, leading to steady suction and drainage.
[関連機構] 荷卸後の航海初期に2号機のバラスト水の循環処理に切替え使用中に機関室事故侵水の際は、必要に応じバックアップのバラストポンプに切替え、或いは該循環処理を休止して、本ポンプ2号機を弁切替操作で冷却海水供給に替え、1号機で上記の危急ビルジ吸引・排水を行う。 [Related mechanism] Switch to the Unit 2 ballast water circulation process at the beginning of the voyage after unloading. If the engine room is inundated during use, switch to a backup ballast pump if necessary, or stop the circulation process. Then, this pump No. 2 is replaced with cooling seawater supply by valve switching operation, and the emergency bilge suction / drainage is performed at No. 1 unit.
なお、2号機はバラスト水循環処理系において、船首タンク(Forepeak Tank)及び船尾タンク(Aft-peak Tank)には、それらタンク容積及び構造上、循環処理の代りに処理水を荷卸時に注入を可能とするため、吸引切替弁V1S、V1Cを配する(参考記載)。 Unit 2 is a ballast water circulation treatment system. Forepeak tank and stern tank (Aft-peak tank) can be filled with treated water instead of circulation treatment at the time of unloading due to their tank volume and structure. Therefore, suction switching valves V1S and V1C are provided (reference description).
[系統構成] 図4において、主機関潤滑油ポンプユニットの主要部を示せば、2台(常用機、予備機)の本ポンプ1の吸引口2にそれぞれ配した吸引弁V1を経て吸引主管41を、二重底上板TTPに溶接のフランジ42に装着の如く低位に配した主吸引逆止弁V1Mに接続し、その尾管43がサンプタンク44の油面下に吸口45を配し、吸引主管41は本ポンプ1の始動時の充油通過に充分な管路長を採り、潤滑油吸引系を成す。 [System Configuration] In FIG. 4, if the main part of the main engine lubricating oil pump unit is shown, the suction main pipe 41 passes through the suction valves V1 respectively disposed in the suction ports 2 of the two main pumps 1 (the regular machine and the spare machine). Is connected to a main suction check valve V1M disposed at a low position as mounted on the welded flange 42 on the double bottom upper plate TTP, and its tail pipe 43 has a suction port 45 disposed below the oil level of the sump tank 44, The suction main pipe 41 has a sufficient pipe length for passage of the oil at the start of the pump 1 and forms a lubricating oil suction system.
本ポンプ1の吐出口15に一方(常用機)にはT形逆止弁V2Tを、他方(予備機)には逆止弁V2を配してその対向側出口を短管46で結合し、外向側出口に配した吐出管47で二次ストレーナ48に至り、更に潤滑油冷却器49(配管は図示省略)を経て送油管50で主機関(図示省略)の回転摺動部に至り、潤滑油吐出系を成す。 A T-type check valve V2T is arranged on one side (ordinary machine) and a check valve V2 is arranged on the other (preliminary machine) at the discharge port 15 of the pump 1, and the opposite outlet is connected by a short pipe 46. The discharge pipe 47 arranged at the outlet on the outward side leads to the secondary strainer 48, and further passes through a lubricating oil cooler 49 (piping is not shown) to reach the rotational sliding portion of the main engine (not shown) via the oil feeding pipe 50. Forms an oil discharge system.
本ポンプ1の吐出口近くにそれぞれ小径の注油弁V3及びその間にT形逆止弁V3Tを配して連成姿の注油弁組を成して呼び油管52に接続し、近接設置の潤滑油移送ポンプ又は手動ポンプ(何れも図示省略)でサンプタンク44より初期呼び油を吸上げ吸引主管41及び本ポンプ1に充油する。 A small-diameter lubrication valve V3 and a T-type check valve V3T are arranged near each discharge port of the pump 1 to form a coupled lubrication valve assembly and connected to the nominal oil pipe 52, and the lubricating oil installed in the vicinity. An initial pump oil is sucked from the sump tank 44 by a transfer pump or a manual pump (both not shown), and the suction main pipe 41 and the main pump 1 are filled.
吐出管47等の管路最高部位にコック52を配し、抜気管53でサンプタンク44に気油混合液を戻す。 The cock 52 is disposed at the highest part of the pipeline such as the discharge pipe 47 and the gas / oil mixture is returned to the sump tank 44 through the vent pipe 53.
[作用] 初期充油として、両ポンプ1の吸引弁V1、逆止弁V2、V2Tを開き、呼び油管52で注油弁組V3T、V3を経て初期呼び油を注入すれば、主吸引逆止弁V1Mにより逆落油を阻止され、両ポンプ1に充油し更に逆止弁V2、短管46、T形逆止弁V2T、吐出し管47を経て二次ストレーナ48、更に潤滑油冷却器49(小容量主機関では機付き)を経て送油管50に充油する。 [Operation] As the initial filling, if the suction valve V1 and the check valves V2 and V2T of both pumps 1 are opened, and the initial priming oil is injected through the priming pipe 52 through the lubrication valve sets V3T and V3, the main suction check valve Backflow oil is prevented by V1M, and both pumps 1 are filled. Further, a check valve V2, a short pipe 46, a T-type check valve V2T, a discharge pipe 47, a secondary strainer 48, and a lubricating oil cooler 49 The oil supply pipe 50 is filled with oil (with a small capacity main engine).
初期充油中に、吐出管47等の潤滑油吐出系のコック51を操作して抜気し、抜気管53で気油混合液をサンプタンク44に落し、吸引・吐出系の残存空気を抜く。 During initial filling, the cock 51 of the lubricating oil discharge system such as the discharge pipe 47 is operated to evacuate, and the gas / oil mixture is dropped into the sump tank 44 through the bleed pipe 53 to remove the remaining air in the suction / discharge system. .
一方の本ポンプ1(常用機)を始動すれば、吸引・吐出系の充油(実線斜線図示)が加速され、主吸引逆止弁V1Mの弁体下及び尾管43の残留空気(点線斜線図示)が吸引主管41を通る間に本ポンプ1が定常運転に移行し、気油混合の過渡状態を経て正常な自吸運転に至る。 When one of the main pumps 1 (ordinary machine) is started, the suction / discharge system refueling (solid hatched lines) is accelerated, and the residual air (dotted hatched lines) below the main suction check valve V1M and the tail pipe 43. (Shown) passes through the suction main pipe 41, the pump 1 shifts to a steady operation, and a normal self-priming operation is achieved through a transient state of gas-oil mixing.
再度コック51を操作し、本ポンプ1の始動により吐出系に上昇の残留空気を抜気し、ポンプユニットの無気定常運転に至り、サンプタンク44の油面と主吸引逆止弁V1Mの弁体との高差HPは頗る小さいので、本ポンプ1は軽少な吸引負圧で自吸運転する。 The cock 51 is operated again, and the rising residual air is discharged to the discharge system by starting the pump 1, and the pump unit is brought to an airless steady operation. The oil level of the sump tank 44 and the valve of the main suction check valve V1M Since the height difference HP with the body is small, this pump 1 performs self-priming operation with a slight suction negative pressure.
本船寄港着岸等で主機関停止の際は、本ポンプ1の停止中においても主吸引逆止弁V1Mの弁体で逆流を阻止して充油を保持し、出港時は本ポンプ1の再始動次第直ちに自吸運転となり、停泊の際は、主吸引逆止弁V1Mをハンドル閉鎖して長時間の充油保持が可能である。 When the main engine is stopped at the berth of the ship, etc., even when the pump 1 is stopped, the valve of the main suction check valve V1M prevents backflow and holds the oil. When leaving the port, the pump 1 is restarted. Immediately, the self-priming operation is started. When the berth is stopped, the main suction check valve V1M can be closed to hold the oil for a long time.
本ポンプ1(例えば常用機)の内部点検や軸封シール取替の際は、該ポンプの吸引弁V1及び吐出逆止弁V2Tを閉じて吸引・吐出系から切離して開放し、他方のポンプ1(例えば予備機)に切替えて運転・送油を継続し、終了復旧後は、本ポンプ1の吸引弁V1及び吐出弁V2Tを開き(逆止弁体は圧油で閉)、注油弁組の弁V3を開き、本ポンプ1の吐出口15に標準装着のコックで抜気しながら充油して本ポンプ1を始動し、抜気完了次第吐出弁V2Tを開いてその弁体下の残留空気を吐出系の最高部位に配したコック51で抜気し、他方のポンプ1を停止し本ポンプ1で定常送油に移行する。 When checking the inside of the pump 1 (for example, a regular machine) or replacing the shaft seal, the suction valve V1 and the discharge check valve V2T of the pump are closed, disconnected from the suction / discharge system, and opened. Switch to (for example, a spare machine) and continue operation and oil supply. After completion of recovery, the suction valve V1 and discharge valve V2T of the pump 1 are opened (the check valve body is closed with pressure oil). Open the valve V3, fill the discharge port 15 of the pump 1 with a standard cock while filling up the gas, start the pump 1, open the discharge valve V2T as soon as the evacuation is complete, and open the residual air under the valve body. Is vented by the cock 51 arranged at the highest part of the discharge system, the other pump 1 is stopped, and the main pump 1 shifts to regular oil feeding.
以上述べた消防・ビルジポンプユニットの直接ビルジ管及び冷却海水ポンプユニットの危急ビルジの吸引弁に係る自吸装置は、既発明1、既発明2の電動機一体型双吸引口付横軸渦巻ポンプの全閉鎖型ポンプセット及び既考案1のT形逆止弁の連成弁機構で部品点数激減且つポンプ周りの鉛直面に諸弁集中配置でポンプ軸端側から操作・保守可能で著しい省スペースと簡潔なポンプユニット構成において、従来の真空ポンプとその操作機構の代りに、頗る構造簡潔な逆止抜気弁を配して直接ビルジ管充水に有効な自己呼び水機能を、危急ビルジ吸引逆止弁入口を吸口とし、本ポンプの気水混合率を局限して有効な自吸機能をそれぞれ与え、ポンプユニットとして高信頼度且つ低コストの自吸装置を具現したものであり、同類のポンプ設備を持つ陸上一般の自吸装置にも応用可能である。 The self-priming devices related to the direct bilge pipe of the firefighting / bilge pump unit and the emergency bilge suction valve of the cooling seawater pump unit described above are all of the horizontal-shaft centrifugal pumps with electric motor-integrated twin suction ports of the first invention and the second invention. The closed-type pump set and the coupled valve mechanism of the T-type check valve of the previous device 1 drastically reduce the number of parts, and the valves can be operated and maintained from the end of the pump shaft by concentrating the valves on the vertical surface around the pump. In a simple pump unit configuration, instead of the conventional vacuum pump and its operation mechanism, a self-priming function that is effective for directly filling the bilge pipe with a simple structure with a simple check vent valve is provided. The inlet is a suction port, the air-water mixing ratio of this pump is limited to provide an effective self-priming function, and a highly reliable and low-cost self-priming device is implemented as a pump unit. Holding Also applicable to self-priming device of the land general.
主機関潤滑油ポンプユニットにおいても、上記の直接ビルジ及び危急ビルジの両者の吸引系の機能を併せ応用し、小寸且つ閉鎖構造の電動機一体型横軸渦巻ポンプの自吸装置とすることができる。 Also in the main engine lubricating oil pump unit, the functions of the suction systems of both the direct bilge and the emergency bilge described above can be applied together to form a self-priming device for a small-size and closed structure motor-integrated horizontal shaft centrifugal pump. .
1 本ポンプ 2 吸引口
3 T分岐管 4 直接ビルジ管
5 泥箱 6 尾管
7 取水主管 8 ビルジ主管
9 共通ビルジ主管 10 逆止弁付泥箱
11 船倉ビルジ主管 12 T分岐管
13 注排水管 14 エダクタ
15 吐出口 16 多分岐管
17 逆止抜気弁 18〜20 欠番
21 T形逆止弁(無ハンドル) 22 出口
23 T分岐管 24 取水管
25 T合流管 26 給水管
27 給水管 28 清水冷却器
29 吸引管 30 弁入口
31 排水管 32 舷外排水管
33 循環送水管 34〜40 欠番
41 吸引主管 42 フランジ
43 尾管 44 サンプタンク
45 吸口 46 短管
47 吐出管 48 二次ストレーナ(潤滑油)
49 潤滑油冷却器 50 送油管
51 コック 52 呼び油管
53 抜気管
101 円筒 102、103 弁座
104、105 金物 106 取付座
107 バネ付き押し棒 108 抜気管
109 抜気弁体 110 逆止弁体
111 邪魔板 112 開口
113 流体出口 114 流体入口
115 突起
V1A 取水弁 V1B ビルジ吸引弁
V1E 危急吸引弁(逆止弁) V2E 危急排水弁
V1M 主吸引逆止弁 V1 取水弁、吸引弁
V2 主給水弁、吐出逆止弁 V2T 吐出逆止弁
V1C 残水吸引弁、吸引切替弁 V1S 吸引切替弁
V2C 循環吐出弁 V3 副給水弁、注油弁
V4 排水弁(逆止弁) V3T 注油弁(T形逆止弁)
V8 直接ビルジ弁(逆止弁) V9 共通ビルジ弁
V10 船倉ビルジ弁 V11 消防弁(逆止弁)
V12 駆動水弁(逆止弁) V13 残水吸引弁(逆止弁)
V14 ビルジ吸引弁(T形逆止弁)
TTP 二重底上板 BW ビルジ溜め
OFL 操作床 LWL 喫水線
SP 船体外板 BHD 隔壁
MDK 中甲板
1 Main pump 2 Suction port 3 T branch pipe 4 Direct bilge pipe 5 Mud box 6 Tail pipe 7 Intake main pipe 8 Bilge main pipe 9 Common bilge main pipe 10 Mud box with check valve 11 Hunakura bilge main pipe 12 T branch pipe 13 Inlet / drain pipe 14 Eductor 15 Discharge port 16 Multi-branch pipe 17 Check air release valve 18 to 20 Missing number 21 T-type check valve (no handle) 22 Outlet 23 T branch pipe 24 Intake pipe 25 T Junction pipe 26 Water supply pipe 27 Water supply pipe 28 Fresh water cooling 29 Suction pipe 30 Valve inlet 31 Drain pipe 32 Outside drain pipe 33 Circulating water feed pipe 34-40 Abbreviated number 41 Suction main pipe 42 Flange 43 Tail pipe 44 Sump tank 45 Suction port 46 Short pipe 47 Discharge pipe 48 Secondary strainer (lubricating oil)
49 Lubricating oil cooler 50 Oil feeding pipe 51 Cock 52 Nominal oil pipe 53 Bleeding pipe 101 Cylinder 102, 103 Valve seat 104, 105 Hardware 106 Mounting seat 107 Push rod with spring 108 Bleeding pipe 109 Bleeding valve body 110 Check valve body 111 Baffle Plate 112 Opening 113 Fluid outlet 114 Fluid inlet 115 Protrusion
V1A Water intake valve V1B Bilge suction valve V1E Critical suction valve (check valve) V2E Emergency drain valve V1M Main suction check valve V1 Water intake valve, suction valve
V2 Main water supply valve, discharge check valve V2T Discharge check valve V1C Residual water suction valve, suction switching valve V1S Suction switching valve V2C Circulation discharge valve V3 Sub-water supply valve, oil supply valve V4 Drain valve (check valve) V3T Oil supply valve ( T type check valve)
V8 Direct bilge valve (check valve) V9 Common bilge valve V10 Funakura bilge valve V11 Fire fighting valve (check valve)
V12 Drive water valve (check valve) V13 Residual water suction valve (check valve)
V14 Bilge suction valve (T-type check valve)
TTP Double bottom upper plate BW Bilge reservoir OFL Operation floor LWL Water line SP Hull outer plate BHD Bulkhead MDK Middle deck
危急ビルジ吸引用逆止弁(以下、危急吸引逆止弁と呼ぶ)は、尾管を付加せず、該逆止弁の入口端を危急ビルジ水面下、すなわち関係規則に従い二重底上板より100mm高に配し、該逆止弁の弁体下の残留空気体積を局限且つ危急吸引管(上述の直接ビルジ管と対比し危急ビルジ管と呼ぶ)の長さ短縮がポンプユニットの省スペース上望ましく、該逆止弁のハンドルは本ポンプ前(ポンプ軸端側のケーシングカバー開放可能)の操作床高で開閉操作し易い高さに設置し、床上460mm以上を要求する船級等必要に応じハンドル軸延長で対応する。 An emergency bilge suction check valve (hereinafter referred to as an emergency suction check valve) does not have a tail pipe, and the inlet end of the check valve is below the surface of the emergency bilge, that is, from the double bottom plate according to the relevant rules. 100mm high , the residual air volume under the valve body of the check valve is limited, and the length of the emergency suction pipe (referred to as the above-mentioned direct bilge pipe is called the emergency bilge pipe) is shortened in space saving of the pump unit Desirably, the handle of the check valve is installed at a height that is easy to open and close in front of the pump (possible to open the casing cover on the pump shaft end side), and it can be used as needed depending on the ship class that requires 460 mm or more above the floor. Corresponding with shaft extension
消防・ビルジポンプユニットは、既発明1に記載の如くエダクタを標準装備し且つ既考案「実登3161757」(以下、既考案1と呼ぶ)のT形逆止弁との連成姿でユニット姿を簡潔化し、自吸機能をエダクタに集約可能であるが、機関室の各種のビルジ吸引・排水系の内の直接ビルジ(ビルジ溜めに専用のビルジ管で直接吸引)は、冷却海水ポンプユニットの危急ビルジ(事故浸水の直接吸引)と共に、エダクタ等の自吸補助機構に頼らず、緊急ビルジとして本ポンプ(*注)自身による吸引・排水機能が求められる(*注:項目0002:渦巻ポンプを本ポンプと呼び、自吸補助用真空ポンプ等と区別)。 The firefighting / bilge pump unit is equipped with an eductor as described in the Invention 1 and is coupled with the T-type check valve of the “Invention 3161757” (hereinafter referred to as the “Invention 1”). Although it can be simplified and the self-priming function can be integrated into the eductor, the bilge suction / drainage system direct bilge in the engine room (direct suction with a bilge pipe dedicated to the bilge reservoir) is an emergency of the cooling seawater pump unit Along with bilge (accident inundation), the pump (* Note) itself requires a suction / drainage function as an emergency bilge without relying on a self-priming assist mechanism such as an eductor (* Note: Item 0002: Spiral pump) This is called a pump, and is distinguished from a self-priming vacuum pump).
[直接ビルジ系] 消防・ビルジポンプユニットの直接ビルジ系の如き、本ポンプ自身による緊急ビルジ吸引・排水機構として、本ポンプの吸引口に装着の若干長のビルジ管の端末に逆止弁を介して泥箱(Mud Box:濾し板内蔵)に接続し、呼び水管に利用する。 [Direct bilge system] As an emergency bilge suction / drainage mechanism by the pump itself, such as a direct bilge system of a firefighting / bilge pump unit, through a check valve at the end of a slightly long bilge pipe attached to the suction port of the pump Connected to a mud box (built-in filter plate) and used as a priming pipe.
[危急ビルジ系] 以上で述べた消防・ビルジポンプユニットの直接ビルジ系と同様に、冷却海水ポンプユニットの危急ビルジ系においても、本ポンプ自身による緊急ビルジ吸引・排水機構として、該ポンプの吸引口に装着の若干長のビルジ管の端末に配した逆止弁で簡潔な自吸機能を与える。 [Emergency Bilge System] Similar to the direct bilge system of the firefighting / bilge pump unit described above, the emergency bilge suction / drainage mechanism of this pump itself is also used in the emergency bilge system of the cooling seawater pump unit. A simple self-priming function is provided by a check valve located at the end of a slightly longer bilge pipe.
危急ビルジ吸引用逆止弁は、尾管を付加せず、該逆止弁の入口端を危急ビルジ水面下、すなわち関係規則に従い二重底上板より100mm高に配し、該逆止弁の弁体下の残留空気体積を局限し、該ビルジ管に充水の呼び水機能を保持して緊急ビルジ吸引・排水機構を成し、該逆止弁のハンドルは本ポンプ前(ポンプ軸端側のケーシングカバー開放可能)の操作床高で開閉操作し易い高さに設置し、床上460mm以上を要求する船級等必要に応じハンドル軸延長で対応する。 The check valve for the emergency bilge suction does not add a tail pipe, and the inlet end of the check valve is placed below the water surface of the emergency bilge, that is, 100 mm higher than the double bottom upper plate according to the related rules. Residual air volume under the valve body is limited, and the bilge pipe is filled with a priming function to form an emergency bilge suction / drainage mechanism. The handle of the check valve is in front of the pump (on the pump shaft end side). Install the casing cover at a height that is easy to open and close with a floor height that can be opened and closed. Handle class shafts that require a height of 460 mm or more above the floor, etc.
消防・ビルジポンプユニットの直接ビルジ及び冷却海水ポンプユニットの危急ビルジの如き、本ポンプ自身による緊急ビルジ吸引・排水機構において、両者の逆止抜気弁の自動抜気及び後者の逆止弁下の残留空気の局限により、喫水線下の本ポンプとビルジ管の充水が有効な呼び水となり、本ポンプ始動或いは定常運転中のビルジ吸引への切替により、該呼び水がポンプ吐出側の管内水と共に加速され、その慣性を持により泥箱や逆止弁体下の残留空気による本ポンプの過渡的空転及び気水混合状態を瞬時に通過して定常吸引に至る、本ポンプ、ビルジ管路及び吐出管路がポンプユニット全体として有効且つ簡潔な自吸装置となり、関係規則(日本海事協会等)に規定の「自己呼び水型:Self-Priming Type」を満足する。 In the emergency bilge suction / drainage mechanism of this pump itself, such as the direct bilge of the firefighting / bilge pump unit and the critical bilge of the cooling seawater pump unit, the automatic evacuation of both check bleed valves and the residual under the latter check valve Due to the locality of the air, filling of the pump and bilge pipe under the water line becomes effective priming water, and the priming water is accelerated together with the pipe water on the pump discharge side by switching to bilge suction during the start of the pump or steady operation, With this inertia, the pump, bilge pipe and discharge pipe that pass through the transient idling of the pump due to the residual air under the mud box and check valve body and the air-water mixing state instantaneously and reach steady suction. The pump unit as a whole is an effective and simple self-priming device and satisfies the “Self-Priming Type” specified in the relevant regulations (Japan Maritime Association, etc.).
以上述べた本考案の構成による効果を、下記に説明する。 The effect by the structure of this invention described above is demonstrated below.
消防・ビルジポンプユニットの直接ビルジ及び冷却海水ポンプユニットの危急ビルジの如き、本ポンプ自身による緊急ビルジ吸引・排水機構において、両者の逆止抜気弁の自動抜気及び後者の逆止弁下の残留空気の局限により、喫水線下の本ポンプとビルジ管の充水が有効な呼び水となり、本ポンプ始動或いは定常運転中のビルジ吸引への切替により、該呼び水がポンプ吐出側の管内水と共に加速されて慣性を持ち、泥箱や逆止弁体下の残留空気による本ポンプの過渡的空転及び気水混合状態を瞬時に通過して定常吸引状態に至る、本ポンプ、ビルジ管路及び吐出管路がポンプユニット全体として有効且つ簡潔な自吸装置となり、関係規則(日本海事協会等)に規定の「自己呼び水型:Self-Priming Type」を満足する。 In the emergency bilge suction / drainage mechanism of this pump itself, such as the direct bilge of the firefighting / bilge pump unit and the critical bilge of the cooling seawater pump unit, the automatic evacuation of both check bleed valves and the residual under the latter check valve Due to the locality of the air, filling of the main pump and the bilge pipe under the water line becomes effective priming water, and the priming water is accelerated together with the pipe water on the pump discharge side by switching to bilge suction during the start of this pump or steady operation. The pump, the bilge line and the discharge line that have inertia and pass through the transient idling of the pump due to residual air under the mud box and check valve body and the air / water mixing state instantaneously to reach the steady suction state. The pump unit as a whole is an effective and simple self-priming device and satisfies the “Self-Priming Type” specified in the relevant regulations (Japan Maritime Association, etc.).
Claims (4)
In the suction system of the main engine lubricating oil pump unit, the main suction check valve connected to the suction main pipe of this pump and directly attached to the double bottom upper plate and the suction port under the oil level of the sump tank in the double bottom A check valve tail pipe is provided, an oil supply valve is provided near the discharge port of this pump, and an oil supply pipe by a nearby lubricating oil transfer pump or a manual pump is connected to give this pump an initial priming oil. In addition, the self-priming operation of the centrifugal pump is configured so that the self-priming operation is performed with a light negative suction pressure, the oil-filled state is maintained with the check valve even when the pump is stopped, and the self-priming operation can be performed immediately upon restarting the pump. apparatus.
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US10087938B2 (en) | 2013-10-18 | 2018-10-02 | Regal Beloit America, Inc. | Pump, associated electric machine and associated method |
US10416685B2 (en) | 2017-03-16 | 2019-09-17 | Regal Beloit America, Inc. | Information collection system, pump system and associated method |
US11085450B2 (en) | 2013-10-18 | 2021-08-10 | Regal Beloit America, Inc. | Pump having a housing with internal and external planar surfaces defining a cavity with an axial flux motor driven impeller secured therein |
CN115590768A (en) * | 2022-12-15 | 2023-01-13 | 吉林大学第一医院(Cn) | Coronary heart disease patient medicine feeding device based on intensive care therapy |
-
2011
- 2011-05-09 JP JP2011002511U patent/JP3174374U/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10087938B2 (en) | 2013-10-18 | 2018-10-02 | Regal Beloit America, Inc. | Pump, associated electric machine and associated method |
US11085450B2 (en) | 2013-10-18 | 2021-08-10 | Regal Beloit America, Inc. | Pump having a housing with internal and external planar surfaces defining a cavity with an axial flux motor driven impeller secured therein |
US10416685B2 (en) | 2017-03-16 | 2019-09-17 | Regal Beloit America, Inc. | Information collection system, pump system and associated method |
CN115590768A (en) * | 2022-12-15 | 2023-01-13 | 吉林大学第一医院(Cn) | Coronary heart disease patient medicine feeding device based on intensive care therapy |
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