JP2536540Y2 - Air reservoir prevention device for suction water tank - Google Patents
Air reservoir prevention device for suction water tankInfo
- Publication number
- JP2536540Y2 JP2536540Y2 JP1991110389U JP11038991U JP2536540Y2 JP 2536540 Y2 JP2536540 Y2 JP 2536540Y2 JP 1991110389 U JP1991110389 U JP 1991110389U JP 11038991 U JP11038991 U JP 11038991U JP 2536540 Y2 JP2536540 Y2 JP 2536540Y2
- Authority
- JP
- Japan
- Prior art keywords
- air
- water tank
- suction
- pump
- suction water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】この考案は、ポンプ据付部近傍が
暗渠である吸込水槽の空気溜まり防止装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing air from being trapped in a suction water tank in which a culvert is located near a pump installation portion.
【０００２】[0002]
【従来の技術】ポンプ据付部近傍が暗渠になっている吸
込水槽において、土木構造上、あるいはレイアウトの関
係でポンプ室天井部分のみが高くなっていることがあ
る。図３はそのような構造の一例を側断面図で示し、１
は暗渠となっている水槽、５はポンプ、２はポンプの吸
込管を示し、符号１１で示す如くポンプ室の天井部分が
高くなっている。2. Description of the Related Art In a suction water tank in which the vicinity of a pump installation section is a culvert, only the ceiling of a pump room may be high due to civil engineering structure or layout. FIG. 3 is a side sectional view showing an example of such a structure.
Denotes a water tank serving as a culvert, 5 denotes a pump, 2 denotes a suction pipe of the pump, and the ceiling of the pump room is high as indicated by reference numeral 11.
【０００３】このような構造では水中に混入している空
気が気泡となって上昇し、天井部に空気の溜り７が形成
される。このような空気の溜り７が形成されると、その
空気がポンプの吸込管２に吸い込まれ、図示の如く吸込
渦Γ（ガンマ）に成長する場合がある。小さな矢印ω
（オメガ）は個々の渦を示している。矢印Ｒは水の流れ
る方向を示し、７１は水６と空気溜り７との境界線を示
している。図４は図３の平面図である。[0003] In such a structure, the air mixed in the water rises as air bubbles, and an air pool 7 is formed on the ceiling. When such an air pool 7 is formed, the air is sucked into the suction pipe 2 of the pump, and may grow into a suction vortex Γ (gamma) as shown in the figure. Small arrow ω
(Omega) indicates an individual vortex. Arrow R indicates the direction in which water flows, and 71 indicates the boundary between water 6 and air reservoir 7. FIG. 4 is a plan view of FIG.
【０００４】そこで図５に示す如く、天井に数本の空気
抜き用パイプ７２を設けることも考えられた。図６は図
５の平面図である。この手段によるとパイプ７２のすぐ
近くの空気は捕捉できるが、パイプ７２から少しでもは
なれたところにある空気は捕捉できず、図示の如く局部
的に空気溜り７が形成され、そこからポンプ吸込管２に
向って吸込渦Γが発生するという欠点は解消されていな
い。空気吸込渦はポンプの振動、騒音の原因となる。Therefore, it has been considered to provide several air vent pipes 72 on the ceiling as shown in FIG. FIG. 6 is a plan view of FIG. According to this means, the air in the immediate vicinity of the pipe 72 can be captured, but the air at any distance from the pipe 72 cannot be captured, and the air reservoir 7 is locally formed as shown in FIG. The drawback that the suction vortex 発 生 occurs toward 2 is not solved. The air suction vortex causes vibration and noise of the pump.
【０００５】[0005]
【課題を解決するための手段】この考案では前記の欠点
を解消するためにポンプ据付部近傍の天井に水路方向に
直角に水路幅にわたった切り欠き溝を設け、その溝の頂
部に空気抜き手段を設けたものである。In this invention, in order to solve the above-mentioned drawback, a notch groove is provided in the ceiling near the pump installation portion at right angles to the water channel direction and extends over the water channel width, and air vent means is provided at the top of the groove. Is provided.
【０００６】[0006]
【作用】この考案の装置では吸込水槽の天井部分に水路
幅にわたって切り欠き溝を設けてあり、その溝の頂部に
空気抜き手段が設けられているので、水路幅全体にわた
って空気の捕捉ができる。In the device of the present invention, a notch groove is provided in the ceiling portion of the suction water tank over the width of the water channel, and air vent means is provided at the top of the groove, so that air can be trapped over the entire width of the water channel.
【０００７】[0007]
【実施例】図１はこの考案の吸込水槽部分の空気溜まり
防止装置を側断面図で示し、図２は同じく平面図を示す
ものであって、暗渠となっている吸込水槽１のポンプ据
付部分の天井１１は高くなっている。５はポンプ、２は
吸込管である。この考案では吸込水槽の天井部分に水路
に直角に水路幅全体にわたって切り欠き溝３を設け、そ
の溝の頂部に空気抜き手段（図示の例では空気抜きパイ
プ４）を設けてある。矢印Ｒは水流の流れる方向を示し
ている。FIG. 1 is a side sectional view of a device for preventing air accumulation in a suction water tank portion according to the present invention, and FIG. 2 is a plan view of the same, showing a pump installation portion of a suction water tank 1 which is a culvert. Ceiling 11 is high. 5 is a pump and 2 is a suction pipe. In the present invention, a cutout groove 3 is provided in the ceiling portion of the suction water tank at right angles to the waterway over the entire width of the waterway, and an air release means (air release pipe 4 in the illustrated example) is provided at the top of the groove. Arrow R indicates the direction of flow of the water flow.
【０００８】切り欠き溝の数は１本でもよいが、図示の
如く２本の方が空気の捕捉は確実になる。切り欠き溝３
は水路幅全体にわたっているので、空気を確実に捕捉
し、空気抜きパイプから抜き出すことができ、ポンプ吸
込管への空気吸込渦の発生を防止することができる。Although the number of the notched grooves may be one, as shown in the figure, the trapping of the air is more reliable. Notch groove 3
Since the air channel extends over the entire width of the water channel, air can be reliably captured and extracted from the air vent pipe, and the occurrence of air suction vortices in the pump suction pipe can be prevented.
【０００９】[0009]
【考案の効果】この考案は、吸込水槽の天井部分に空気
が溜まることを防止し、ポンプの振動、騒音などの原因
となるポンプ吸込管への吸込渦の発生を防止することが
できる。According to the present invention, it is possible to prevent air from accumulating in the ceiling of the suction water tank and to prevent the occurrence of suction vortices in the pump suction pipe which may cause vibration and noise of the pump.
【図１】この考案の装置の側断面図である。FIG. 1 is a side sectional view of the device of the present invention.
【図２】この考案の装置の平面図である。FIG. 2 is a plan view of the device of the present invention.
【図３】従来の装置の側断面図である。FIG. 3 is a side sectional view of a conventional device.
【図４】従来の装置の平面図である。FIG. 4 is a plan view of a conventional device.
【図５】空気抜き用パイプを有する従来の装置の側断面
図である。FIG. 5 is a side sectional view of a conventional apparatus having an air vent pipe.
【図６】空気抜き用パイプを有する従来の装置の平面図
である。FIG. 6 is a plan view of a conventional device having an air vent pipe.
１ 暗渠 ２ ポンプ吸込管 ３ 切り欠き溝 ４ 空気抜き手段 ５ ポンプ ６ 流水 ７ 空気 DESCRIPTION OF SYMBOLS 1 Culvert 2 Pump suction pipe 3 Notch groove 4 Air release means 5 Pump 6 Running water 7 Air
Claims (1)
の空気溜まり防止装置において、ポンプ据付部近傍の天
井に水路方向に直角に水路幅にわたった１本又は複数本
の切り欠き溝を設け、その溝の頂部に空気抜き手段を設
けたことを特徴とする吸込水槽の空気溜まり防止装置。An air trapping device for a suction tank having a culvert in the vicinity of a pump installation portion, wherein one or a plurality of tubes are provided on a ceiling near the pump installation portion at right angles to the water channel direction and across the width of the water channel.
An air trapping device for a suction water tank, wherein a notch groove is provided and air vent means is provided at the top of the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991110389U JP2536540Y2 (en) | 1991-12-17 | 1991-12-17 | Air reservoir prevention device for suction water tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991110389U JP2536540Y2 (en) | 1991-12-17 | 1991-12-17 | Air reservoir prevention device for suction water tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0552299U JPH0552299U (en) | 1993-07-13 |
| JP2536540Y2 true JP2536540Y2 (en) | 1997-05-21 |
Family
ID=14534573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991110389U Expired - Fee Related JP2536540Y2 (en) | 1991-12-17 | 1991-12-17 | Air reservoir prevention device for suction water tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2536540Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52117287A (en) * | 1976-03-29 | 1977-10-01 | Kokusai Electric Co Ltd | Method of controlling crystal diameter |
-
1991
- 1991-12-17 JP JP1991110389U patent/JP2536540Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0552299U (en) | 1993-07-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |