JPS6248080B2 - - Google Patents
Info
- Publication number
- JPS6248080B2 JPS6248080B2 JP58157797A JP15779783A JPS6248080B2 JP S6248080 B2 JPS6248080 B2 JP S6248080B2 JP 58157797 A JP58157797 A JP 58157797A JP 15779783 A JP15779783 A JP 15779783A JP S6248080 B2 JPS6248080 B2 JP S6248080B2
- Authority
- JP
- Japan
- Prior art keywords
- suction
- pump
- water tank
- water
- side wall
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- 239000002244 precipitate Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/04—Free-flow canals or flumes; Intakes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は立軸ポンプの吸込水槽の改良に係
り、特に渦流の発生を防ぐようにした水槽に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a suction water tank for a vertical shaft pump, and particularly relates to a water tank that prevents the generation of eddies.
従来のこの種の水槽を第１図、第２図について
説明する。
A conventional aquarium of this type will be explained with reference to FIGS. 1 and 2.
図において、１は底壁２、側壁３、後壁４で構
成される水槽、５〜９は水槽１内に並設されたポ
ンプ吸込管、５ａは吸込管５の吸込口である。 In the figure, 1 is a water tank composed of a bottom wall 2, a side wall 3, and a rear wall 4, 5 to 9 are pump suction pipes arranged in parallel in the water tank 1, and 5a is a suction port of the suction pipe 5.
ポンプ吸込管５〜９の没水深さｈがポンプの大
きさに比し小さい場合、第１図に示すように吸込
管５と後壁４との間の自由表面に渦流Ａを生じ、
この渦流Ａによつて空気を吸込み、これが吸込管
からポンプに吸上げられるとポンプ性能が低下す
るばかりでなく、振動、騒音を発生する。また、
第２図に示すごとく水槽１内に複数並設して臨ま
せた吸込管５〜９のうちで、例えば吸込管６だけ
のポンプを運転した場合にも渦流Ａが発生しやす
くなる。この渦流Ａは吸込管の吸込口に向かつて
下向き流れになり、自由表面上の空気を吸込み成
長すると考えられる。
When the submersion depth h of the pump suction pipes 5 to 9 is small compared to the size of the pump, a vortex A is generated on the free surface between the suction pipe 5 and the rear wall 4, as shown in FIG.
Air is sucked in by this vortex flow A, and if this air is sucked up by the pump from the suction pipe, not only the pump performance will deteriorate, but also vibration and noise will be generated. Also,
As shown in FIG. 2, among a plurality of suction pipes 5 to 9 arranged side by side and facing inside the water tank 1, for example, when a pump with only the suction pipe 6 is operated, the vortex A is likely to occur. It is thought that this vortex A becomes a downward flow toward the suction port of the suction pipe and grows by sucking air on the free surface.
この発明の目的は、複数のポンプ吸込管を並設
して臨ませた吸込水槽において、ポンプ運転時に
ポンプ吸込管と水槽後壁との間の自由表面に渦流
が発生するのを防止すると共に、ポンプ吸込管の
吸込口付近に水中に溶けている空気が析出して気
柱を発生することのない立軸ポンプの吸込水槽を
得ることにある。 An object of the present invention is to prevent the generation of vortices on the free surface between the pump suction pipes and the rear wall of the tank during pump operation in a suction water tank in which a plurality of pump suction pipes are arranged side by side and facing each other, and to To obtain a suction water tank for a vertical shaft pump in which air dissolved in water does not precipitate near the suction port of a pump suction pipe to generate an air column.
上記目的を達成するため本発明は、複数のポン
プ吸込管が同一の吸込水槽内に、その吸込水槽の
後壁と平行に並設される立軸ポンプの吸込水槽に
おいて、前記ポンプ吸込管間に側壁板を没水させ
て設け、この側壁板の下端はポンプ吸込管の吸込
口面に合せるようにして水槽底壁との間に隙間を
形成し、該側壁板により水槽流路を分割し、かつ
前記ポンプ吸込管手前に前記吸込水槽の後壁と平
行に前壁板を没水させ、該前壁板下端と前記水槽
底壁との間に水路を形成したものである。
In order to achieve the above object, the present invention provides a suction tank for a vertical shaft pump in which a plurality of pump suction pipes are arranged in parallel to the rear wall of the suction tank in the same suction tank, and a side wall is provided between the pump suction pipes. A plate is submerged in water, the lower end of this side wall plate is aligned with the suction port surface of the pump suction pipe to form a gap with the bottom wall of the water tank, and the side wall plate divides the water tank flow path, and A front wall plate is submerged in water in front of the pump suction pipe in parallel with the rear wall of the suction water tank, and a water channel is formed between the lower end of the front wall plate and the bottom wall of the water tank.
本発明によれば以下の作用が得られる。 According to the present invention, the following effects can be obtained.
(1) ポンプ吸込管での吸水時の水流は、前壁板下
端の水路を通過し、水槽底壁に沿う流れとなる
ことから、吸込管に沿う下向き流れがなくな
り、吸込管と水槽後壁との間の自由表面に渦流
が発生するのを防止する。(1) When the pump suction pipe takes in water, the water flow passes through the water channel at the lower end of the front wall plate and flows along the bottom wall of the water tank, so there is no downward flow along the suction pipe, and the water flows between the suction pipe and the rear wall of the water tank. This prevents the formation of vortices on the free surface between the
(2) 水槽内の一台のポンプだけの運転時において
も、側壁板によつてポンプ吸込管が区画されて
いることから、吸込管と水槽後壁との間の自由
表面に渦流が発生するのを助長させない。(2) Even when only one pump in the tank is operating, the pump suction pipe is divided by the side wall plate, so a vortex is generated on the free surface between the suction pipe and the rear wall of the tank. Don't encourage this.
(3) 側壁板と水槽底壁との間に隙間を形成したこ
とにより、ポンプ吸込管の吸込口付近の流速は
あまり増大せず、吸込口付近に渦流が発生して
も、その渦流の中心が著しく低圧となることは
ないから、水中に溶けている空気を析出して気
柱を発生するということがない。(3) By creating a gap between the side wall plate and the bottom wall of the water tank, the flow velocity near the suction port of the pump suction pipe does not increase much, and even if a vortex occurs near the suction port, the center of the vortex Since the pressure in the water does not become extremely low, the air dissolved in the water does not precipitate out and create an air column.
以下、この発明の実施例を第３図〜第６図につ
いて説明する。
Embodiments of the present invention will be described below with reference to FIGS. 3 to 6.
第１図、第２図と同じものには同じ符号を付し
て表わす。 Components that are the same as those in FIGS. 1 and 2 are denoted by the same reference numerals.
第３図、第４図において、１０〜１３はポンプ
吸込管５〜９間に没水させた側壁板で、この側壁
板の一端は支柱１４〜１７に固定されている。側
壁板１０〜１３とポンプ吸込管５〜９の中心との
距離Ｓは吸込管の吸込口直径Ｄの1.4倍程度が望
ましい。また、側壁板１０〜１３と水槽底壁２と
の間には隙間Ｃを隔てて没水されている。また、
ポンプ吸込管５〜９手前には水流に対して直角に
前壁板１８〜２２が側壁３と支柱１４〜１７また
は支柱間に固定され没水されており、前壁板１８
〜２２と底壁２との間には水路Ｉが設けられてい
る。 In FIGS. 3 and 4, 10-13 are side wall plates submerged between pump suction pipes 5-9, and one end of this side wall plate is fixed to supports 14-17. The distance S between the side wall plates 10 to 13 and the centers of the pump suction pipes 5 to 9 is desirably about 1.4 times the suction port diameter D of the suction pipes. Furthermore, a gap C is provided between the side wall plates 10 to 13 and the bottom wall 2 of the water tank, which are submerged in water. Also,
In front of the pump suction pipes 5 to 9, front wall plates 18 to 22 are fixed at right angles to the water flow and submerged in the side wall 3 and the columns 14 to 17 or between the columns.
A water channel I is provided between ~22 and the bottom wall 2.
この発明は上記のように構成したから、第６図
に示すように水層１内に没水されたポンプ吸込管
５〜９で水の汲上げを行なうと、これによつて生
じた水流は自由表面より没水された前壁板１８〜
２２下端の水路Ｉを通過することにより、底壁２
に沿う流れとなつてポンプ吸込管に導びかれるの
で、吸込管５〜９に沿う下向き流れがなくなり、
吸込管と後壁４の間に生ずる渦流の発生がなくな
る。また、水槽内の一台のポンプだけの運転にお
いても側壁板１０〜１３によつてポンプ吸込管５
〜９は区画されることになり、渦流Ａの発生を助
長させることはない。 Since this invention is constructed as described above, when water is pumped up by the pump suction pipes 5 to 9 submerged in the water layer 1 as shown in FIG. 6, the water flow generated thereby is Front wall board 18 submerged from the free surface
By passing through the water channel I at the lower end of 22, the bottom wall 2
Since the flow is guided to the pump suction pipe, there is no downward flow along the suction pipes 5 to 9,
The generation of vortices between the suction pipe and the rear wall 4 is eliminated. Further, even when only one pump in the water tank is operated, the pump suction pipe 5 is
9 will be partitioned, and the generation of the vortex A will not be promoted.
なお、第３図に示すように前壁板１８〜２２と
ポンプ吸込管５〜９の中心との距離Ｅはこの吸込
管の吸込口直径Ｄの1.5倍に、深水深さＬは自由
表面から底壁２まで距離Ｈの0.15倍に設定するの
が望ましい。また、側壁板１０〜１３が底壁２ま
で延在して配置されていると、第５図のようにポ
ンプ吸込管５〜９の吸込口付近の流速が増大し渦
流が発生する。その渦流の中心は著しく低圧とな
り水中に溶けている空気を析出して気柱Ｂ，B′を
生ずる。この気柱Ｂ，B′を吸込管が吸込むと前記
渦流Ａと同様にポンプの性能低下と同時に著しい
振動や騒音を誘発する。したがつて、側壁板１０
〜１３と底壁２との間には隙間Ｃを設ける必要が
あり、第３図に示すごとく、側壁板１０〜１３下
端は吸込口面に合せるのが望ましい。 As shown in FIG. 3, the distance E between the front wall plates 18 to 22 and the center of the pump suction pipes 5 to 9 is 1.5 times the suction port diameter D of this suction pipe, and the deep water depth L is from the free surface. It is desirable to set it to 0.15 times the distance H to the bottom wall 2. Further, when the side wall plates 10 to 13 are arranged to extend to the bottom wall 2, the flow velocity near the suction ports of the pump suction pipes 5 to 9 increases and a vortex is generated, as shown in FIG. The pressure at the center of the vortex becomes extremely low and the air dissolved in the water is precipitated to form air columns B and B'. When these air columns B and B' are sucked into the suction pipe, similar to the vortex flow A, the performance of the pump deteriorates and significant vibration and noise are induced. Therefore, the side wall plate 10
It is necessary to provide a gap C between the side wall plates 10 to 13 and the bottom wall 2, and as shown in FIG. 3, it is desirable that the lower ends of the side wall plates 10 to 13 are aligned with the suction port surface.
以上説明したように、この発明によれば、ポン
プ吸込管間に側壁板を水槽底壁との間に隙間を形
成させて設け、この側壁板により水槽流路を分割
し、かつポンプ吸込管手前に前壁板を水槽底壁と
の間に水路を形成させて設けたので、ポンプ運転
時にポンプ吸込管と水槽後壁との間の自由表面に
渦流が発生するのを防止できると共に、ポンプ吸
込管の吸込口付近に水中に溶けている空気が析出
して気柱を発生することのない立軸ポンプの吸込
水槽を得ることができる効果がある。これによつ
て、ポンプの性能低下や振動、騒音などを防止す
ることができる。
As explained above, according to the present invention, a side wall plate is provided between the pump suction pipes with a gap formed between the side wall plate and the bottom wall of the water tank, the water tank flow path is divided by the side wall plate, and the side wall plate is provided in front of the pump suction pipe. Since the front wall plate is provided with a water channel formed between it and the bottom wall of the water tank, it is possible to prevent the generation of vortices on the free surface between the pump suction pipe and the rear wall of the water tank during pump operation, and also to prevent the pump suction It is possible to obtain a suction water tank for a vertical shaft pump in which air dissolved in water does not precipitate near the suction port of the pipe and do not generate an air column. This makes it possible to prevent deterioration in pump performance, vibration, noise, and the like.
第１図は従来の立軸ポンプの吸込水槽の縦断面
図、第２図は第１図の平面図、第３図はこの発明
の立軸ポンプの吸込水槽の縦断面図、第４図は第
３図の平面図、第５図、第６図は気柱の発生状
況、水流の状態を示す説明図である。
１……吸込水槽、２……底壁、３……側壁、４
……後壁、５〜９……ポンプ吸込管、１０〜１３
……側壁板、１８〜２２……前壁板。
FIG. 1 is a vertical cross-sectional view of the suction tank of a conventional vertical shaft pump, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a vertical cross-sectional view of the suction tank of the vertical shaft pump of the present invention, and FIG. The plan view, FIG. 5, and FIG. 6 are explanatory diagrams showing the generation of air columns and the state of water flow. 1...Suction water tank, 2...Bottom wall, 3...Side wall, 4
... Rear wall, 5-9 ... Pump suction pipe, 10-13
...Side wall board, 18-22...Front wall board.
Claims (1)
その吸込水槽の後壁と平行に並設される立軸ポン
プの吸込水槽において、前記ポンプ吸込管間に側
壁板を没水させて設け、この側壁板の下端はポン
プ吸込管の吸込口面に合わせるようにして水槽底
壁との間に隙間を形成し、該側壁板により水槽流
路を分割し、かつ前記ポンプ吸込管手前に前記吸
込水槽の後壁と平行に前壁板を没水させ、該前壁
板下端と前記水槽底壁との間に水路を形成してな
ることを特徴とする立軸ポンプの吸込水槽。1 Multiple pump suction pipes are in the same suction tank,
In the suction water tank of the vertical pump that is installed parallel to the rear wall of the suction water tank, a side wall plate is submerged between the pump suction pipes, and the lower end of this side wall plate is aligned with the suction port surface of the pump suction pipe. forming a gap with the bottom wall of the water tank, dividing the water tank flow path by the side wall plate, and immersing the front wall plate parallel to the rear wall of the suction tank in front of the pump suction pipe, A suction water tank for a vertical shaft pump, characterized in that a water channel is formed between the lower end of the front wall plate and the bottom wall of the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58157797A JPS5963377A (en) | 1983-08-31 | 1983-08-31 | Suction pump of vertical shaft pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58157797A JPS5963377A (en) | 1983-08-31 | 1983-08-31 | Suction pump of vertical shaft pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5963377A JPS5963377A (en) | 1984-04-11 |
| JPS6248080B2 true JPS6248080B2 (en) | 1987-10-12 |
Family
ID=15657493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58157797A Granted JPS5963377A (en) | 1983-08-31 | 1983-08-31 | Suction pump of vertical shaft pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5963377A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0708253A1 (en) | 1994-09-29 | 1996-04-24 | Samsung Heavy Industries Co., Ltd | Oil drain device for valve spool cap |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586143A (en) * | 2021-06-17 | 2021-11-02 | 广州市市政工程设计研究总院有限公司 | Deep drainage tunnel system drainage pump station |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4925202U (en) * | 1972-06-02 | 1974-03-04 | ||
| JPS4925202A (en) * | 1972-07-03 | 1974-03-06 |
-
1983
- 1983-08-31 JP JP58157797A patent/JPS5963377A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4925202U (en) * | 1972-06-02 | 1974-03-04 | ||
| JPS4925202A (en) * | 1972-07-03 | 1974-03-06 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0708253A1 (en) | 1994-09-29 | 1996-04-24 | Samsung Heavy Industries Co., Ltd | Oil drain device for valve spool cap |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5963377A (en) | 1984-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6248080B2 (en) | ||
| JPS5922071B2 (en) | Pump suction water tank vortex generation prevention device | |
| US4069788A (en) | Method and apparatus for conducting water through ships | |
| JP2009051237A (en) | Sea chest | |
| JP3882409B2 (en) | Pump device with vortex generation prevention device | |
| JPH0111999Y2 (en) | ||
| JP6653204B2 (en) | Intake pits and plants | |
| JP4570822B2 (en) | Horizontal pump gate for low suction water level | |
| CN211039155U (en) | Oblique flow pump volute partition tongue based on asymmetric microstructure | |
| JPH0687425U (en) | Intake tank | |
| JP2955818B2 (en) | Pump suction pipe | |
| JPH07279886A (en) | Vortex generation preventing device for water tank for suction of pump | |
| JPS6021508Y2 (en) | Pump suction water tank vortex generation prevention device | |
| JPS6329920Y2 (en) | ||
| JPS555432A (en) | Pump with inducer | |
| JPH08108197A (en) | Float fountain for purification | |
| JPS58174174A (en) | Rectifier in pump suction water tank | |
| JPH0349994Y2 (en) | ||
| JPH0893654A (en) | Suction sump for pump | |
| JP2019173618A (en) | Pump suction tank | |
| JPH0452152Y2 (en) | ||
| CN118108288A (en) | Sea valve box and seawater intake system | |
| JPH0614499U (en) | Submersible pump suction water tank | |
| JP3345876B2 (en) | Suction device for circulation pumps, etc. | |
| JPH1073092A (en) | Vertical pump |