JPH11324967A - Vertical shaft pump - Google Patents
Vertical shaft pumpInfo
- Publication number
- JPH11324967A JPH11324967A JP10130216A JP13021698A JPH11324967A JP H11324967 A JPH11324967 A JP H11324967A JP 10130216 A JP10130216 A JP 10130216A JP 13021698 A JP13021698 A JP 13021698A JP H11324967 A JPH11324967 A JP H11324967A
- Authority
- JP
- Japan
- Prior art keywords
- storage tank
- liquid
- shaft
- pump
- bearing device
- 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.)
- Pending
Links
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、長時間、無注水で
先行待機運転する、特に、揚程の高い立軸ポンプに関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical pump having a high head and a standby operation for a long time without water injection.
【０００２】[0002]
【従来の技術】従来、雨水排水機場において立軸ポンプ
が広く採用されている。ところで、この立軸ポンプの軸
受装置にはセラミックス軸受または樹脂製軸受を使用す
る傾向にある。一方、近年、都市圏の排水機場において
は、ヒートアイランド化による局所的な大雨や道路等の
アスファルト化による土地の雨水吸収能力の低下によ
り、雨水排水機場への雨水の流入が急激で、かつ、流入
量が大になる傾向にある。これに対処するため、降雨量
を予想してポンプを予め運転状態で待機させておく、い
わゆる先行待機運転を行なうことが多くなりつつある。
しかしながら、前記先行待機運転中においては、水槽へ
の雨水流入量が少ないため、長時間ドライ運転をするこ
ととなるが、このドライ運転が長くなると、前記セラミ
ックス軸受装置が発熱により破損するため、先行待機運
転時に潤滑液（清水や潤滑油）をセラミックス軸受装置
に供給する必要がある。2. Description of the Related Art Conventionally, vertical pumps have been widely used in rainwater drainage stations. By the way, there is a tendency to use a ceramic bearing or a resin bearing for the bearing device of the vertical shaft pump. On the other hand, in recent years, at the drainage stations in urban areas, rainwater has rapidly and inflowed into the rainwater drainage stations due to local heavy rain due to heat islands and the reduction of the rainwater absorption capacity of the land due to asphalt of roads and the like. The amount tends to be large. In order to cope with this, the so-called preceding standby operation in which the pump is made to stand by in advance in an operation state in anticipation of the amount of rainfall is increasing.
However, during the preceding standby operation, the amount of rainwater flowing into the water tank is small, so that the dry operation is performed for a long time. It is necessary to supply a lubricating liquid (fresh water or lubricating oil) to the ceramic bearing device during standby operation.
【０００３】そのため、本出願人は特開平９−２８７５
９０号公報にて、長時間先行待機運転を可能とする立軸
ポンプを提案した。すなわち、インペラシャフトの下部
をベーンケーシングに設けた下部軸受装置により支持す
るとともに、揚水管の屈曲部を貫通するインペラシャフ
トの上部を上部軸封装置で軸封し、かつ、前記ベーンケ
ーシングと前記上部軸封装置間にインペラシャフトを保
護する保護管を設け、前記ベーンケーシングの下部軸受
装置より下方に下部軸封装置を設けて前記保護管を貯液
槽として機能させ、該保護管の上部および前記下部軸受
装置と下部軸封装置間に形成される室をポンプ本体に付
設した貯液タンクにそれぞれ配管により連通させ、か
つ、前記保護管内のインペラシャフトに保護管内の液体
をインペラ側に圧送する液循環機構を設けた立軸ポンプ
である。For this reason, the applicant of the present invention has disclosed Japanese Patent Application Laid-Open No. 9-2875.
In Japanese Patent Publication No. 90, a vertical shaft pump that enables a long-term standby operation is proposed. That is, the lower portion of the impeller shaft is supported by a lower bearing device provided in a vane casing, and the upper portion of the impeller shaft penetrating the bent portion of the pumping pipe is sealed with an upper shaft sealing device. A protection tube for protecting the impeller shaft is provided between the shaft sealing devices, and a lower shaft sealing device is provided below the lower bearing device of the vane casing so that the protection tube functions as a liquid storage tank. A liquid for connecting a chamber formed between the lower bearing device and the lower shaft sealing device to a liquid storage tank attached to the pump body by a pipe, and for pumping the liquid in the protection tube to the impeller side to the impeller shaft in the protection tube. This is a vertical shaft pump provided with a circulation mechanism.
【０００４】この立軸ポンプによると、インペラシャフ
トとその保護管との間を潤滑液の貯液槽として機能させ
るため、潤滑液も、貯液槽および貯液タンクにより十分
確保され、しかも、液循環機構により下部軸受装置に向
かって長期にわたって潤滑液を供給することができ、つ
まり、長期にわたって無注水で先行待機運転を行なうこ
とができる。According to this vertical pump, since the space between the impeller shaft and its protective tube is made to function as a reservoir for the lubricating liquid, the lubricating liquid is also sufficiently secured by the reservoir and the liquid storage tank, and the liquid circulates. By the mechanism, the lubricating liquid can be supplied to the lower bearing device for a long period of time, that is, the preliminary standby operation can be performed without water injection for a long period of time.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、ポンプ
揚程Ｐ1が高い場合、すなわちＰ1が前記下部軸封装置と
下部軸受装置間の室内圧力Ｐ2より高い場合、前記下部
軸封装置から揚水（汚水）が摺動等を介して侵入して潤
滑液が汚染され、種々の支障を来す原因となる。また、
長時間先行待機運転すると、軸封装置や軸受装置の摺動
熱により潤滑液が昇温し、あるいは潤滑液が蒸発等によ
り不足し、この状態が長く続くと軸封装置や軸受装置が
焼損する危険性を有する。また、ポンプ揚程が高い立軸
ポンプにおいては、ポンプ揚程が高いため潤滑液中に軸
封装置を介して揚水（汚水）が侵入しやすいという欠点
を有する。したがって、本発明は、前記従来の立軸ポン
プの前記欠点を除去することのできる立軸ポンプを提供
することを目的とする。[SUMMARY OF THE INVENTION However, when pump head P 1 is high, that is, when P 1 is higher than the chamber pressure P 2 between the lower shaft sealing device and the lower bearing device, pumping from the lower shaft sealing device ( Sewage) penetrates through sliding or the like, and contaminates the lubricating liquid, causing various troubles. Also,
When the standby operation is performed for a long time, the lubricating fluid is heated due to the sliding heat of the shaft sealing device or the bearing device, or the lubricating fluid is insufficient due to evaporation or the like. Has danger. In addition, a vertical shaft pump having a high pump head has a drawback that pumping water (dirty water) easily enters the lubricating fluid via a shaft sealing device because the pump head is high. Therefore, an object of the present invention is to provide a vertical shaft pump which can eliminate the above-mentioned disadvantages of the conventional vertical shaft pump.
【０００６】[0006]
【課題を解決するための手段】本発明は、前記目的を達
成するために、インペラシャフトの下部をベーンケーシ
ングに設けた下部軸受装置により支持するとともに、揚
水管の屈曲部を貫通するインペラシャフトの上部を上部
軸封装置で軸封し、かつ、前記ベーンケーシングと前記
上部軸封装置間にインペラシャフトを保護する保護管を
設け、前記ベーンケーシングの下部軸受装置より下方に
下部軸封装置を設けて前記保護管を貯液槽として機能さ
せ、該保護管の上部および前記下部軸受装置と下部軸封
装置間に形成される室をポンプ本体に付設した貯液タン
クにそれぞれ配管により連通させ、かつ、前記保護管内
のインペラシャフトに保護管内の液体をインペラ側に圧
送する液循環機構を設けた立軸ポンプにおいて、前記貯
液タンクを密閉式とするとともに、この密閉貯液タンク
に、一端が前記屈曲部近傍の揚水管内と連通し、密閉貯
液タンク内圧力をポンプ揚程と同一にする自動調圧機構
を設けたものである。なお、前記密閉貯液タンク内と前
記保護管上部とを連通する配管に放熱機構を設けること
が好ましい。また、前記密閉貯液タンクに水位計と該水
位計により作動する注液機構を設け、密閉貯液タンク内
水位を所定範囲に保持することが好ましい。さらに、前
記密閉貯液タンクに温度計を設け、密閉貯液タンク内の
液温が所定温度以上となると前記放熱機構を作動させる
ようにすることが好ましい。According to the present invention, in order to achieve the above object, the lower part of the impeller shaft is supported by a lower bearing device provided in a vane casing, and the impeller shaft penetrates a bent portion of a pumping pipe. An upper part is sealed with an upper shaft sealing device, and a protection tube for protecting an impeller shaft is provided between the vane casing and the upper shaft sealing device, and a lower shaft sealing device is provided below a lower bearing device of the vane casing. The protective tube functions as a liquid storage tank, and a chamber formed between the upper part of the protective tube and the lower bearing device and the lower shaft sealing device is communicated with a liquid storage tank attached to a pump body by piping, respectively, and A vertical pump provided with a liquid circulation mechanism for pumping the liquid in the protection tube to the impeller side on the impeller shaft in the protection tube, wherein the liquid storage tank is sealed. While, in the closed liquid storage tank, one end through pumping pipe and communicating of the bent portion near the one in which it is provided an automatic pressure regulating mechanism for the sealed reservoir tank pressure equal to the pump head. In addition, it is preferable that a heat radiation mechanism is provided in a pipe that connects the inside of the closed liquid storage tank and the upper part of the protective tube. Further, it is preferable that a water level meter and a liquid injection mechanism operated by the water level meter are provided in the closed liquid storage tank, and the water level in the closed liquid storage tank is maintained within a predetermined range. Further, it is preferable that a thermometer is provided in the closed liquid storage tank, and the heat radiation mechanism is activated when the liquid temperature in the closed liquid storage tank becomes equal to or higher than a predetermined temperature.
【０００７】[0007]
【発明の実施の形態】つぎに、本発明の実施の形態を図
１〜４にしたがって説明する。図１は本発明の立軸ポン
プを示し、１は上部が屈曲した揚水管、４は上端が前記
揚水管１の屈曲部（吐出エルボ部）２を貫通し、下端に
インペラ５を備えたインペラシャフトで、該シャフト４
は上端部を上部軸受装置６で、下端部は揚水管１のベー
ンケーシング３に設けたセラミックス製の下部軸受装置
８で支持されている。なお、下部軸受装置８には図３に
示す下記するセラミックス製軸受装置１１と同様、潤滑
液通過用の多数の孔Ｈが設けられている。また、前記イ
ンペラシャフト４の揚水路Ｐに露出する部分は、前記ベ
ーンケーシング３と揚水管１の屈曲部２間に水密的に取
り付けた保護管１０内にあり、インペラシャフト４が揚
水中の異物により損傷するのを防止する。なお、インペ
ラシャフト４の中間部は保護管１０のほぼ中央に設けた
セラミックス製軸受装置１１で支持されている。１２は
吸込口である。Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a vertical pump according to the present invention, wherein 1 is a pumping pipe having a bent upper part, 4 is an impeller shaft having an upper end penetrating a bent part (discharge elbow) 2 of the pumping pipe 1 and having an impeller 5 at a lower end. And the shaft 4
The upper end is supported by an upper bearing device 6, and the lower end is supported by a ceramic lower bearing device 8 provided in the vane casing 3 of the water pump 1. The lower bearing device 8 is provided with a large number of holes H for passing a lubricating liquid, similarly to the ceramic bearing device 11 described below shown in FIG. Further, a portion of the impeller shaft 4 exposed to the pumping passage P is in a protective tube 10 which is water-tightly mounted between the vane casing 3 and the bent portion 2 of the pumping tube 1, and the impeller shaft 4 has To prevent damage. The intermediate portion of the impeller shaft 4 is supported by a ceramic bearing device 11 provided substantially at the center of the protective tube 10. 12 is a suction port.
【０００８】一方、前記ベーンケーシング３の下端内壁
とインペラシャフト４との間にメカニカルシールやグラ
ンドパッキング装置等の下部軸封装置９が設けられ、前
記下部軸受装置８と下部軸封装置９とで室１３が形成さ
れている。また、インペラシャフト４には、インペラシ
ャフト４の回転により保護管１０内の水を下方に移動さ
せる液循環機構の１つである羽根車１４，１５が設けて
ある。その他、７は上部軸封装置である。さらに、ポン
プ本体には密閉貯液タンク１６が設けられ、前記保護管
１０の上部と前記室１３は、少なくとも一部にフレキシ
ブルチューブ１９を備えた配管１７，１８にて前記密閉
貯液タンク１６内の潤滑液Ｗを介して連通している。前
記構成は、前述の特開平９−２８７５９０号公報に記載
のものである。On the other hand, a lower shaft sealing device 9 such as a mechanical seal or a gland packing device is provided between an inner wall of a lower end of the vane casing 3 and the impeller shaft 4, and the lower bearing device 8 and the lower shaft sealing device 9 are combined. A chamber 13 is formed. Further, the impeller shaft 4 is provided with impellers 14 and 15 which are one of liquid circulation mechanisms for moving water in the protection tube 10 downward by rotation of the impeller shaft 4. In addition, reference numeral 7 denotes an upper shaft sealing device. Further, a closed liquid storage tank 16 is provided in the pump body, and the upper part of the protection tube 10 and the chamber 13 are connected to the inside of the closed liquid storage tank 16 by pipings 17 and 18 at least partially provided with a flexible tube 19. Through the lubricating liquid W. The configuration is described in the above-mentioned JP-A-9-287590.
【０００９】本発明においては、前記密閉貯液タンク１
６内に、一端が前記揚水管１の屈曲部２と配管２１によ
り連通したベローズあるいは図４に示すピストン２２等
の自動調圧機構２０を設けてある。In the present invention, the closed storage tank 1
An automatic pressure control mechanism 20 such as a bellows or a piston 22 shown in FIG.
【００１０】また、前記保護管１０の上部と密閉貯液タ
ンク１６内とを連通する配管１８の一部を蛇行構成１８
ａとするとともに、ポンプ本体の上部軸受ケース６ａ
に、前記インペラシャフト４の回転により動力伝達機構
２５により回転する冷却ファン２４とで構成する放熱機
構２３を設け、該冷却ファン２４により配管１８を通る
潤滑液Ｗを冷却するようになっている。A part of a pipe 18 communicating the upper part of the protective tube 10 and the inside of the closed liquid storage tank 16 is formed in a meandering configuration.
a and the upper bearing case 6a of the pump body.
Further, a heat dissipating mechanism 23 composed of a cooling fan 24 rotated by a power transmission mechanism 25 by rotation of the impeller shaft 4 is provided, and the cooling fan 24 cools the lubricating liquid W passing through the pipe 18.
【００１１】さらに、前記密閉貯液タンク１６には、水
位計２６、注液配管２７、潤滑液温度計２８、安全弁２
９や排気弁３０が設けられている。そして、本実施形態
においては、密閉貯液タンク１６内の潤滑液Ｗが最低基
準値以下となったことを水位計２６が検出すると前記注
液配管２７から潤滑液Ｗを注入し、最高基準値に達する
と注入を停止するようになっている。また、ポンプ起動
中で、潤滑液Ｗの温度が所定温度以上になったことを潤
滑液温度計２８が検出すると、図示しないクラッチが作
動して前記冷却ファン２４を回転させるようになってい
る。なお、３０はフィルタである。Further, a water level gauge 26, a liquid injection pipe 27, a lubricating liquid thermometer 28, a safety valve 2
9 and an exhaust valve 30 are provided. In the present embodiment, when the water level gauge 26 detects that the lubricating liquid W in the closed liquid storage tank 16 has become equal to or less than the minimum reference value, the lubricating liquid W is injected from the injection pipe 27 and the highest reference value is set. When it reaches, the injection is stopped. Further, when the lubricating liquid thermometer 28 detects that the temperature of the lubricating liquid W has become equal to or higher than the predetermined temperature during the start of the pump, a clutch (not shown) is operated to rotate the cooling fan 24. Reference numeral 30 denotes a filter.
【００１２】前記構成からなるため、まず、前記排気弁
３０を開放状態として注液配管２７から密閉貯液タンク
１６内および保護管１０内に所定量の潤滑液（清水ある
いは潤滑油）Ｗを供給する。このように、前記密閉貯液
タンク１６と保護管１０内に大量の潤滑液Ｗが貯留され
ているため、長時間にわたって先行待機運転にもとづく
ドライ運転を行なっても、セラミックス軸受装置８，１
１は常に潤滑液Ｗに浸された状態にあり、しかも、保護
管１０内の潤滑液Ｗは羽根車１４，１５により配管１
７，１８を介して循環してその間に冷却されるため、セ
ラミックス軸受装置８，１１が焼損することはない。Because of the above-mentioned configuration, first, the exhaust valve 30 is opened, and a predetermined amount of lubricating liquid (fresh water or lubricating oil) W is supplied from the injection pipe 27 into the closed storage tank 16 and the protection pipe 10. I do. As described above, since a large amount of the lubricating liquid W is stored in the closed liquid storage tank 16 and the protective tube 10, even if the dry operation based on the preliminary standby operation is performed for a long time, the ceramic bearing devices 8, 1 are not used.
1 is always immersed in the lubricating liquid W, and the lubricating liquid W in the protective tube 10 is
Since the ceramic bearing devices 8 and 11 are circulated through the cooling devices 7 and 18 and cooled during the cooling operation, the ceramic bearing devices 8 and 11 do not burn out.
【００１３】ついで、ポンプが正規運転に入ると、ポン
プ揚程Ｐ1が高いため、下部軸封装置９からポンプ揚液
が侵入する危険性があるが、前記自動調圧機構２０が設
けてあるため、屈曲部２からのポンプ揚程Ｐ1の圧力に
よりベローズあるいはピストン２２が膨脹あるいは前進
し、その結果、密閉貯液タンク１６の圧力Ｐ2はＰ1と同
圧になる。そして、さらに、前記液循環機構を構成する
羽根車１４，１５の昇圧作用により下部軸封装置９での
潤滑液Ｗの圧力Ｐ3は常にポンプ揚程Ｐ1より高くなり、
下部軸封装置９から潤滑液Ｗ中へポンプ揚液が侵入する
ことがなく、つまり、潤滑液Ｗの汚染がなく、上，下軸
封装置７，９や上，下軸受装置６，８で異常摩耗や焼損
が生じることがない。[0013] Then, the pump enters the normal operation, since the high pump head P 1, there is a risk that the pump liquid being pumped from the lower shaft sealing device 9 enters, since the automatic pressure regulating mechanism 20 is provided , bellows or piston 22 expands or advanced by the pressure of the pump head P 1 from the bent portion 2, as a result, the pressure P 2 of the sealed reservoir tank 16 becomes the same pressure as P 1. Further, the pressure P 3 of the lubricating liquid W in the lower shaft sealing device 9 is always higher than the pump head P 1 by the pressure increasing action of the impellers 14 and 15 constituting the liquid circulation mechanism,
The pump pump liquid does not enter the lubricating fluid W from the lower shaft sealing device 9, that is, there is no contamination of the lubricating fluid W, and the upper and lower shaft sealing devices 7 and 9 and the upper and lower bearing devices 6 and 8 do not. No abnormal wear or burnout occurs.
【００１４】また、潤滑液Ｗが軸受装置での摺動熱によ
り温度上昇しても、所定温度となれば、前記温度計２８
がこれを検知し、冷却ファン２４を駆動して潤滑液Ｗを
冷却し、上下軸封装置７，９や上下軸受装置６，８での
損焼を防止できる。このように、潤滑液Ｗは十分にあ
り、しかも、所定温度以上に温度が上がることがないた
め、軸受装置、特に、下部軸受装置８として安価なゴム
軸受の使用も可能となる。さらに、長期の使用等により
前記潤滑液Ｗが減少すれば、水位計２６により自動的に
注液されることになる。Even if the temperature of the lubricating liquid W rises due to sliding heat in the bearing device, if the temperature reaches a predetermined temperature, the thermometer 28
When this is detected, the cooling fan 24 is driven to cool the lubricating liquid W, so that the upper and lower shaft sealing devices 7, 9 and the upper and lower bearing devices 6, 8 can be prevented from burning out. As described above, since the lubricating liquid W is sufficient and the temperature does not rise above a predetermined temperature, an inexpensive rubber bearing can be used as the bearing device, particularly, the lower bearing device 8. Further, if the lubricating liquid W decreases due to long-term use or the like, the lubricating liquid W is automatically injected by the water level gauge 26.
【００１５】なお、前記説明では、密閉貯液タンク１６
とポンプ本体とを別構造としたが、前記屈曲部２を２重
胴としてこの部分を密閉貯液タンクとしてもよく、ま
た、放熱機構２３も潤滑液温度計２８により作動させる
ものに限らず、手動により作動させるようにしてもよ
い。さらに、前述のように配管１７，１８の一部にフレ
キシブルチューブ１９を使用すれば、たとえ地震が発生
しても、その振動が吸収され、配管１７，１８が途中で
破損することがなく、かつ、潤滑液Ｗが十分にあるた
め、ポンプ駆動源としてエンジン、ガスタービンを使用
する場合、地震時のライフライン停止時にもポンプを無
注水で運転することが可能となる。In the above description, the closed storage tank 16
And the pump body are separate structures, but the bent portion 2 may be a double body, and this portion may be a sealed liquid storage tank, and the heat radiation mechanism 23 is not limited to being operated by the lubricating liquid thermometer 28. You may make it operate manually. Furthermore, if a flexible tube 19 is used for a part of the pipes 17 and 18 as described above, even if an earthquake occurs, the vibration is absorbed, and the pipes 17 and 18 are not damaged on the way, and When the engine or gas turbine is used as a pump drive source because the lubricating liquid W is sufficient, the pump can be operated without water injection even when the lifeline is stopped during an earthquake.
【００１６】[0016]
【発明の効果】以上の説明で明らかなように、本発明に
よれば、密閉貯液タンクの他に保護管を潤滑液の貯液部
とするものであって貯液部の容積が大きく、かつ、前記
上部軸受装置を除く全ての軸受装置は浸水状態となって
いるため、長期間後、先行待機運転に入っても軸受装置
は損傷することはない。また、運転停止期間中に蒸発、
少量の漏れ等が生じても貯液量が十分であるため潤滑液
が不足する恐れもなく、メインテナンスも楽である。し
かも、密閉貯液タンク内の圧力は自動調圧機構によりほ
ぼポンプ揚程と同圧で、かつ、インペラシャフトに設け
た液循環機構により、下部軸封装置と下部軸受装置との
間の室は常にポンプ揚程より高く保持されているため、
下部軸封装置から揚液が侵入して潤滑液が汚染されるこ
とがなく、軸封装置、軸受装置が焼損したり損傷したり
することがない。また、請求項２に記載のように、密閉
貯液タンクと保護管上部を連通する配管に放冷機構を設
けることにより潤滑液の異常昇温を防止することができ
る。さらに、請求項３に記載のように、密閉貯液タンク
内に、水位計と注液機構とを設け、水位が所定値以下に
低下すると自動給水するようにすれば、よりメンテナン
スフリーとすることができる。さらにまた、請求項４に
記載のように、密閉貯液タンク内に温度計を設けて潤滑
液の液温が所定温度以上になると前記放冷機構を作動さ
せるようにすれば、潤滑液温度を所定温度に自動管理で
き、潤滑液温上昇に基づく軸封装置や軸受装置の焼損を
自動的に防止することができる。As is apparent from the above description, according to the present invention, in addition to the sealed liquid storage tank, the protection tube is used as the liquid storage part for the lubricating liquid, and the volume of the liquid storage part is large. In addition, since all the bearing devices except the upper bearing device are in a submerged state, the bearing device is not damaged even if the standby standby operation is started after a long period of time. In addition, evaporation during the shutdown period,
Even if a small amount of leakage or the like occurs, the amount of liquid stored is sufficient, and there is no danger of running out of lubricating liquid, and maintenance is easy. In addition, the pressure in the closed storage tank is almost the same as the pump head by the automatic pressure adjustment mechanism, and the chamber between the lower shaft sealing device and the lower bearing device is always maintained by the liquid circulation mechanism provided on the impeller shaft. Because it is held higher than the pump head,
Lubricating fluid is not contaminated by pumping liquid from the lower shaft sealing device, and the shaft sealing device and the bearing device are not burned or damaged. Further, as described in claim 2, by providing a cooling mechanism in a pipe connecting the closed storage tank and the upper portion of the protection tube, it is possible to prevent an abnormal rise in the temperature of the lubricating liquid. Furthermore, as described in claim 3, a water level gauge and a liquid injection mechanism are provided in the closed liquid storage tank, and when the water level falls below a predetermined value, water is automatically supplied, so that maintenance is free. Can be. Furthermore, as described in claim 4, a thermometer is provided in the closed storage tank so that when the lubricating liquid temperature becomes equal to or higher than a predetermined temperature, the cooling mechanism is operated. A predetermined temperature can be automatically controlled, and burnout of a shaft sealing device and a bearing device based on a rise in lubricating fluid temperature can be automatically prevented.
【図１】 本発明にかかる立軸ポンプの概略図。FIG. 1 is a schematic view of a vertical pump according to the present invention.
【図２】 図１の部分拡大図。FIG. 2 is a partially enlarged view of FIG.
【図３】 自動調圧機構の変形例の概略を示す図。FIG. 3 is a view schematically showing a modification of the automatic pressure adjusting mechanism.
【図４】 セラミックス軸受の断面図。FIG. 4 is a sectional view of a ceramic bearing.
１…揚水管、２…屈曲部、３…ベーンケーシング、４…
インペラシャフト、５…インペラ、６…上部軸受装置、
７…上部軸封装置、８…下部軸受装置、９…下部軸封装
置、１０…保護管、１３…室、１５…液循環機構、１６
…密閉貯液タンク、１７，１８…配管、１９…フレキシ
ブルチューブ、２０…自動調圧機構、２１…配管、２２
…ベローズ（ピストン）、２３…放熱機構、２４…冷却
ファン、２５…動力伝達機構、２６…水位計、２７…注
液配管、２８…潤滑液温度計、２９…安全弁、Ｗ…潤滑
液。DESCRIPTION OF SYMBOLS 1 ... Pumping pipe, 2 ... bending part, 3 ... vane casing, 4 ...
Impeller shaft, 5: impeller, 6: upper bearing device,
7 upper shaft sealing device, 8 lower bearing device, 9 lower shaft sealing device, 10 protection tube, 13 chamber, 15 liquid circulation mechanism, 16
... Closed storage tank, 17, 18 ... Piping, 19 ... Flexible tube, 20 ... Automatic pressure regulating mechanism, 21 ... Piping, 22
... bellows (piston), 23 ... heat dissipation mechanism, 24 ... cooling fan, 25 ... power transmission mechanism, 26 ... water level gauge, 27 ... injection pipe, 28 ... lubricating liquid thermometer, 29 ... safety valve, W ... lubricating liquid.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ｆ１６Ｃ 17/14 Ｆ１６Ｃ 17/14 33/10 33/10 Ｂ ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI // F16C 17/14 F16C 17/14 33/10 33/10 B
Claims (4)
ングに設けた下部軸受装置により支持するとともに、揚
水管の屈曲部を貫通するインペラシャフトの上部を上部
軸封装置で軸封し、かつ、前記ベーンケーシングと前記
上部軸封装置間にインペラシャフトを保護する保護管を
設け、前記ベーンケーシングの下部軸受装置より下方に
下部軸封装置を設けて前記保護管を貯液槽として機能さ
せ、該保護管の上部および前記下部軸受装置と下部軸封
装置間に形成される室をポンプ本体に付設した貯液タン
クにそれぞれ配管により連通させ、かつ、前記保護管内
のインペラシャフトに保護管内の液体をインペラ側に圧
送する液循環機構を設けた立軸ポンプにおいて、 前記貯液タンクを密閉式とするとともに、この密閉貯液
タンクに、一端が前記屈曲部近傍の揚水管内と連通し、
密閉貯液タンク内圧力をポンプ揚程と同一にする自動調
圧機構を設けたことを特徴とする立軸ポンプ。1. A lower bearing device provided in a vane casing for supporting a lower portion of an impeller shaft, and sealing an upper portion of an impeller shaft penetrating a bent portion of a water pump pipe with an upper shaft sealing device. A protective tube for protecting the impeller shaft is provided between the upper shaft sealing device and the lower shaft sealing device, and a lower shaft sealing device is provided below the lower bearing device of the vane casing so that the protective tube functions as a liquid storage tank. The upper and the lower bearing device and the chamber formed between the lower shaft sealing device are connected to the liquid storage tank attached to the pump body by piping, respectively, and the liquid in the protection tube is transferred to the impeller shaft in the protection tube toward the impeller. In a vertical pump provided with a liquid circulation mechanism for pumping, the liquid storage tank is sealed, and one end of the closed liquid storage tank is bent. Part through pumping pipe and communicating in the vicinity,
A vertical shaft pump provided with an automatic pressure adjusting mechanism for making the pressure in the closed storage tank equal to the pump head.
とを連通する配管に放熱機構を設けたことを特徴とする
前記請求項１に記載の立軸ポンプ。2. The vertical pump according to claim 1, wherein a heat radiating mechanism is provided in a pipe communicating between the inside of the closed storage tank and the upper part of the protection tube.
により作動する注液機構を設け、密閉貯液タンク内水位
を所定範囲に保持するようにした前記請求項１または２
のいずれかに記載の立軸ポンプ。3. The closed storage tank is provided with a water level gauge and a liquid injection mechanism operated by the water level gauge, so that the water level in the closed storage tank is maintained within a predetermined range.
The vertical pump according to any one of the above.
閉貯液タンク内の液温が所定温度以上となると前記放熱
機構を作動させるようにしたことを特徴とする前記請求
項２，３のいずれかに記載の立軸ポンプ。4. A thermometer is provided in the closed storage tank, and when the liquid temperature in the closed storage tank becomes a predetermined temperature or higher, the heat radiating mechanism is activated. The vertical pump according to any one of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10130216A JPH11324967A (en) | 1998-05-13 | 1998-05-13 | Vertical shaft pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10130216A JPH11324967A (en) | 1998-05-13 | 1998-05-13 | Vertical shaft pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11324967A true JPH11324967A (en) | 1999-11-26 |
Family
ID=15028874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10130216A Pending JPH11324967A (en) | 1998-05-13 | 1998-05-13 | Vertical shaft pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11324967A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691676A (en) * | 2012-06-14 | 2012-09-26 | 中国水电顾问集团华东勘测设计研究院 | Long-axis deep well pump with sand-proof function |
| CN103410791A (en) * | 2013-07-24 | 2013-11-27 | 黄佳华 | Nitrogen automatic control device on vertical magnetic force driven submerged pump |
| JP2014190207A (en) * | 2013-03-27 | 2014-10-06 | Kubota Corp | Vertical shaft pump device |
| CN104251180A (en) * | 2013-06-26 | 2014-12-31 | 黑龙江双锅锅炉股份有限公司 | Sewage siphoning generating set |
| JP2015175240A (en) * | 2014-03-13 | 2015-10-05 | 株式会社荏原製作所 | Bearing device and vertical shaft pump including the same |
| JP2021085390A (en) * | 2019-11-29 | 2021-06-03 | 株式会社酉島製作所 | pump |
| JP2022015381A (en) * | 2020-07-09 | 2022-01-21 | 株式会社電業社機械製作所 | pump |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4919281B1 (en) * | 1969-08-22 | 1974-05-16 | ||
| JPS5292405U (en) * | 1975-12-31 | 1977-07-11 | ||
| JPS56142292U (en) * | 1980-03-26 | 1981-10-27 | ||
| JPS62168993A (en) * | 1985-11-27 | 1987-07-25 | Shimadzu Corp | Heat pipe cooling type turbo molecular pump |
| JPS6439493U (en) * | 1987-09-02 | 1989-03-09 | ||
| JPH0352399U (en) * | 1989-09-27 | 1991-05-21 | ||
| JPH08100787A (en) * | 1990-02-28 | 1996-04-16 | Shimadzu Corp | Turbo-molecular pump |
| JPH09287590A (en) * | 1996-04-19 | 1997-11-04 | Torishima Pump Mfg Co Ltd | Vertical shaft pump |
-
1998
- 1998-05-13 JP JP10130216A patent/JPH11324967A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4919281B1 (en) * | 1969-08-22 | 1974-05-16 | ||
| JPS5292405U (en) * | 1975-12-31 | 1977-07-11 | ||
| JPS56142292U (en) * | 1980-03-26 | 1981-10-27 | ||
| JPS62168993A (en) * | 1985-11-27 | 1987-07-25 | Shimadzu Corp | Heat pipe cooling type turbo molecular pump |
| JPS6439493U (en) * | 1987-09-02 | 1989-03-09 | ||
| JPH0352399U (en) * | 1989-09-27 | 1991-05-21 | ||
| JPH08100787A (en) * | 1990-02-28 | 1996-04-16 | Shimadzu Corp | Turbo-molecular pump |
| JPH09287590A (en) * | 1996-04-19 | 1997-11-04 | Torishima Pump Mfg Co Ltd | Vertical shaft pump |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691676A (en) * | 2012-06-14 | 2012-09-26 | 中国水电顾问集团华东勘测设计研究院 | Long-axis deep well pump with sand-proof function |
| CN102691676B (en) * | 2012-06-14 | 2014-10-08 | 中国水电顾问集团华东勘测设计研究院 | Long-axis deep well pump with sand-proof function |
| JP2014190207A (en) * | 2013-03-27 | 2014-10-06 | Kubota Corp | Vertical shaft pump device |
| CN104251180A (en) * | 2013-06-26 | 2014-12-31 | 黑龙江双锅锅炉股份有限公司 | Sewage siphoning generating set |
| CN103410791A (en) * | 2013-07-24 | 2013-11-27 | 黄佳华 | Nitrogen automatic control device on vertical magnetic force driven submerged pump |
| CN103410791B (en) * | 2013-07-24 | 2015-09-16 | 黄佳华 | Vertical magnetic drives the automatic nitrogen control device on Under Water Pumps |
| JP2015175240A (en) * | 2014-03-13 | 2015-10-05 | 株式会社荏原製作所 | Bearing device and vertical shaft pump including the same |
| JP2021085390A (en) * | 2019-11-29 | 2021-06-03 | 株式会社酉島製作所 | pump |
| JP2022015381A (en) * | 2020-07-09 | 2022-01-21 | 株式会社電業社機械製作所 | pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4655181B2 (en) | Dry submersible motor pump with cooling water enclosed heat exchanger | |
| JPH11324967A (en) | Vertical shaft pump | |
| JPS6358244B2 (en) | ||
| JP3079177B1 (en) | Vertical pump | |
| RU2652969C2 (en) | Device for water supply from the well to tower and its automatic drain valve | |
| JP4995301B2 (en) | Vertical shaft pump equipment | |
| CN203146429U (en) | Internal-circulation cooling device for submersible electric pump motor | |
| JP4603021B2 (en) | pump | |
| RU2109148C1 (en) | Combination system of automatic control and regulation of internal combustion engine thermal conditions | |
| JPH09287590A (en) | Vertical shaft pump | |
| KR101220222B1 (en) | Vertical water pump operatable under submerged condition | |
| US3431860A (en) | Centrifugal pump of the free surface type | |
| JP2003120571A (en) | Pump facility | |
| JP5422711B1 (en) | pump | |
| JP3647956B2 (en) | Vertical shaft pump | |
| JPS6047816A (en) | Boiling and cooling apparatus for engine | |
| JP4107408B2 (en) | Structure of mechanical seal chamber of vertical axis pump | |
| CN213540739U (en) | Idling protection system of pump | |
| UA126030C2 (en) | Pumping unit | |
| JP2636545B2 (en) | Vertical shaft pump bearing device | |
| JPH0769038B2 (en) | Oil heating device | |
| CN112160914A (en) | Idling protection system of pump | |
| JP4011835B2 (en) | pump | |
| CN213574672U (en) | Motor self-cooling system for submersible sewage pump | |
| JPH075844Y2 (en) | Sealed water cooling system for deoxidizer |