JPS6214198U - - Google Patents
Info
- Publication number
- JPS6214198U JPS6214198U JP10412585U JP10412585U JPS6214198U JP S6214198 U JPS6214198 U JP S6214198U JP 10412585 U JP10412585 U JP 10412585U JP 10412585 U JP10412585 U JP 10412585U JP S6214198 U JPS6214198 U JP S6214198U
- Authority
- JP
- Japan
- Prior art keywords
- inducer
- diameter
- pump
- suction pipe
- inlet
- 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
- 239000000411 inducer Substances 0.000 claims description 19
- 230000004323 axial length Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
第１図は、本考案のインデユーサ付ポンプの断
面図、第２図は第１図のインデユーサ入口部の仕
様点付近の流れの説明図、第３図は第１図のイン
デユーサ入口部の低流量域での流れの説明図、第
４図は低流量域におけるインデユーサ上流域の逆
流範囲の測定結果の線図、第５図は本考案のイン
デユーサ付ポンプと従来のインデユーサ付ポンプ
の性能比較線図、第６図は第５図の試験に用いた
各ポンプのインデユーサ主要寸法形状図、第７図
は本考案の他の実施例を示す断面図、第８図は第
７図のインデユーサ出口部の低吸込圧力での運転
時の流れ図、第９図は従来のインデユーサ付ポン
プの断面図である。
１……ケーシング、２……主羽根車、３……イ
ンデユーサ、４……インデユーサハブ、５……イ
ンデユーサ羽根、６……チツプクリアランス、７
……ケーシング吸込管、８……回転軸、９……吸
込配管、１０……キー、１１……ナツト、１２…
…逆流、１３……チツプキヤビテーシヨン。
Fig. 1 is a sectional view of the pump with an inducer of the present invention, Fig. 2 is an explanatory diagram of the flow near the specification point of the inductor inlet of Fig. 1, and Fig. 3 is a low flow rate of the inductor inlet of Fig. 1. Figure 4 is a graph showing the measurement results of the backflow range in the upstream region of the inducer in the low flow rate area, Figure 5 is a performance comparison diagram between the pump with an inducer of the present invention and the conventional pump with an inducer. , FIG. 6 is a drawing of the main dimensions and shape of the inducer of each pump used in the test shown in FIG. 5, FIG. 7 is a sectional view showing another embodiment of the present invention, and FIG. FIG. 9, which is a flowchart during operation at low suction pressure, is a sectional view of a conventional pump with an inducer. DESCRIPTION OF SYMBOLS 1... Casing, 2... Main impeller, 3... Inducer, 4... Inducer hub, 5... Inducer blade, 6... Chip clearance, 7
... Casing suction pipe, 8 ... Rotating shaft, 9 ... Suction pipe, 10 ... Key, 11 ... Nut, 12 ...
...reflux, 13...chip cavitation.
Claims (1)
デユーサ付ポンプにおいて、インデユーサ入口側
チツプ径を吸込管口径より大きくし、インデユー
サ入口部を急拡大流路としたことを特徴とするイ
ンデユーサ付ポンプ。 ２ インデユーサ入口側チツプ径が吸込管口径の
１１０〜１５０％であることを特徴とする実用新
案登録請求の範囲第１項記載のインデユーサ付ポ
ンプ。 ３ インデユーサ入口側チツプ径Ｄ１ｔと吸込管
口径Ｄ５とで構成される急拡大部高さＨ＝（Ｄ１
ｔ−Ｄ５）／２が、吸込管端面からインデユーサ
後縁までの軸方向長さＬの１０％以下であること
を特徴とする実用新案登録請求の範囲第２項記載
のインデユーサ付ポンプ。[Scope of Claim for Utility Model Registration] 1. A pump with an inducer in which an inducer is installed in front of the impeller, characterized in that the diameter of the tip at the inlet of the inducer is larger than the diameter of the suction pipe, and the inlet of the inducer is made into a rapidly expanding flow path. A pump with an inducer. 2. The pump with an inducer according to claim 1, wherein the diameter of the tip on the inlet side of the inducer is 110 to 150% of the diameter of the suction pipe. 3 Height of the rapidly expanding part consisting of the inducer inlet side tip diameter D 1t and the suction pipe diameter D 5 = (D 1
The pump with an inducer according to claim 2, wherein t - D 5 )/2 is 10% or less of the axial length L from the end face of the suction pipe to the trailing edge of the inducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10412585U JPS6214198U (en) | 1985-07-10 | 1985-07-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10412585U JPS6214198U (en) | 1985-07-10 | 1985-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6214198U true JPS6214198U (en) | 1987-01-28 |
Family
ID=30977328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10412585U Pending JPS6214198U (en) | 1985-07-10 | 1985-07-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6214198U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03253797A (en) * | 1990-03-02 | 1991-11-12 | Nikkiso Co Ltd | Axial flow inducer with step |
| JP2002005079A (en) * | 2000-05-15 | 2002-01-09 | Pfeiffer Vacuum Gmbh | Gas friction pump |
| JP2006258040A (en) * | 2005-03-18 | 2006-09-28 | Ishikawajima Harima Heavy Ind Co Ltd | Inducer device for high speed pump |
| JP2013189916A (en) * | 2012-03-13 | 2013-09-26 | Mitsubishi Heavy Ind Ltd | Pump, and mechanism for suppressing interference of pump leakage flow |
| JP2016037936A (en) * | 2014-08-08 | 2016-03-22 | 株式会社川本製作所 | Pump device |
-
1985
- 1985-07-10 JP JP10412585U patent/JPS6214198U/ja active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03253797A (en) * | 1990-03-02 | 1991-11-12 | Nikkiso Co Ltd | Axial flow inducer with step |
| JP2002005079A (en) * | 2000-05-15 | 2002-01-09 | Pfeiffer Vacuum Gmbh | Gas friction pump |
| JP2006258040A (en) * | 2005-03-18 | 2006-09-28 | Ishikawajima Harima Heavy Ind Co Ltd | Inducer device for high speed pump |
| JP4702599B2 (en) * | 2005-03-18 | 2011-06-15 | 株式会社Ｉｈｉ | High-speed pump inducer |
| JP2013189916A (en) * | 2012-03-13 | 2013-09-26 | Mitsubishi Heavy Ind Ltd | Pump, and mechanism for suppressing interference of pump leakage flow |
| JP2016037936A (en) * | 2014-08-08 | 2016-03-22 | 株式会社川本製作所 | Pump device |
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