JPS6354160B2 - - Google Patents
Info
- Publication number
- JPS6354160B2 JPS6354160B2 JP56065197A JP6519781A JPS6354160B2 JP S6354160 B2 JPS6354160 B2 JP S6354160B2 JP 56065197 A JP56065197 A JP 56065197A JP 6519781 A JP6519781 A JP 6519781A JP S6354160 B2 JPS6354160 B2 JP S6354160B2
- Authority
- JP
- Japan
- Prior art keywords
- booster
- impeller
- vane
- blade
- centrifugal
- 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
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 235000015842 Hesperis Nutrition 0.000 description 2
- 235000012633 Iberis amara Nutrition 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 206010011878 Deafness Diseases 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/422—Discharge tongues
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (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
本発明は遠心式回転機械に関し、ことに二段燃
焼方式の液体ロケツトやLNG冷熱回収システム
の分野に利用される。なお、本明細書において遠
心式回転機械とは遠心ポンプ、遠心圧縮機を総称
するものとする。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a centrifugal rotating machine, and is particularly used in the fields of two-stage combustion type liquid rockets and LNG cold heat recovery systems. In addition, in this specification, the centrifugal rotating machine is a general term for centrifugal pumps and centrifugal compressors.
従来の技術
二段燃焼方式の液体ロケツトやLNG冷熱回収
システムにおいて、システムの圧力上昇のための
装置として遠心ポンプが用いられる。このような
システムにおいては昇圧したプロセスフローの一
部（例えば５−10％）をさらに高圧に昇圧させる
必要がある場合が多い。このような場合従来は第
一段昇圧用の主機と第二段昇圧用の補機との独立
した２基又は同軸上に配した２基のエンシンポン
プが用いられている。この場合例えば第１図に示
すような片吸込式または第２図に示すような両吸
込式昇圧装置を主たる昇圧装置に直列に用いるの
が通常である。BACKGROUND TECHNOLOGY Centrifugal pumps are used in two-stage combustion liquid rockets and LNG cold recovery systems as devices to increase system pressure. In such systems, it is often necessary to boost a portion (eg, 5-10%) of the pressurized process flow to an even higher pressure. In such cases, conventionally, two independent engine pumps or two coaxially arranged engine pumps are used: a main engine for boosting the pressure in the first stage and an auxiliary machine for boosting the pressure in the second stage. In this case, for example, a single suction type booster as shown in FIG. 1 or a double suction type booster as shown in FIG. 2 is usually used in series with the main booster.
第１図の片吸込式の場合にはポンプの吸込口５
からインペラ１の羽根車２を通つて昇圧されポン
プケーシング３のボリユート４へ出た流れは吐出
口６から吐出される。また第２図の両吸込式の場
合にはポンプの吸込口５から羽根車１１の主羽根
１２を通つて昇圧されポンプケーシング１３のボ
リユート１４へ出た流れは吐出口（図示されな
い）から吐出される。 In the case of the single suction type shown in Figure 1, the suction port 5 of the pump
The flow that has been pressurized from the pump through the impeller 2 of the impeller 1 and exits to the volute 4 of the pump casing 3 is discharged from the discharge port 6. In addition, in the case of the double suction type shown in FIG. 2, the flow that is pressurized from the suction port 5 of the pump through the main blades 12 of the impeller 11 and exits to the volute 14 of the pump casing 13 is discharged from the discharge port (not shown). Ru.
発明が解決しようとする問題点
前述の２基を独立に用いた場合、高速回転の遠
心ポンプが２基となる（第１図、第２図に示すよ
うな補機を要する）のでシステムが複雑になると
いう問題を生ずる。また同軸２基の場合にはこと
に、一軸上にまとまるので遠心ポンプの軸方向長
さが長くなり、軸受けに困難な問題を生じやす
い。Problems to be Solved by the Invention When the two units described above are used independently, the system becomes complicated because there are two high-speed centrifugal pumps (requiring auxiliary equipment as shown in Figures 1 and 2). This causes the problem of becoming. Furthermore, in the case of two coaxial pumps, since they are assembled on one axis, the axial length of the centrifugal pump becomes long, which tends to cause difficult bearing problems.
問題点を解決するための手段
本発明の目的は、上述の従来の欠点を解決する
にある。Means for Solving the Problems The object of the present invention is to overcome the above-mentioned conventional drawbacks.
すなわち本発明は、羽根車に固設された第１の
昇圧羽根と、該第１の昇圧羽根の半径方向に突出
した後縁部に前縁部が位置するよう上記羽根車に
固設された第２の昇圧羽根と、上記第１の昇圧羽
根と上記第２の昇圧羽根の後縁部へ別々に開口
し、該開口部にはそれぞれデイフユーザが配置さ
れている第１および第２の渦室とを有することを
特徴とする遠心式回転機械にある。 That is, the present invention includes a first booster blade fixed to an impeller, and a first booster blade fixed to the impeller so that its leading edge is located at the radially protruding rear edge of the first booster blade. a second booster vane, and first and second vortex chambers that open separately to trailing edges of the first booster vane and the second booster vane, and each of which has a differential user disposed in the opening. A centrifugal rotating machine is characterized by having the following features:
作 用
本発明によれば、主機流量の一部をさらに昇圧
させる必要に対し、第２次の遠心ポンプを用いず
簡便な手段で応え得る。Effects According to the present invention, the need to further increase the pressure of a part of the flow rate of the main engine can be met by a simple means without using a secondary centrifugal pump.
実施例
第３図は片吸込式の遠心ポンプについての実施
例の断面図を示す。Embodiment FIG. 3 shows a sectional view of an embodiment of a single-suction centrifugal pump.
２１は羽根車であり、第１の昇圧羽根すなわち
主羽根２２が固設されている。羽根車２１の外周
部は延長されて、第２の昇圧羽根すなわち副羽根
２６が、その前縁部が主羽根２２の半径方向に突
出した後縁部に位置するようにして固設されてい
る。従つて副羽根２６は主羽根２２と共に羽根車
２１と一体になつて回転する。２５，２７はデイ
フユーザである。これらデイフユーザ２５，２７
はそれぞれ主羽根２２、副羽根２６の後縁部へ
別々に配置されている。デイフユーザ２５，２７
はそれぞれ渦室２４，２８の入り口にある。この
ような構成であるので、遠心ポンプを通過する流
れは主羽根２２で仕事をされて昇圧し大部分はデ
イフユーザ２５を通つて渦室２４に入り昇圧を完
了する。一方主羽根２２を通つた流れの一部は副
羽根２６に吸込まれてさらに追加昇圧されデイフ
ユーザ２７を通り副渦室２８に入つて追加昇圧を
完了する。２３はポンプケーシングである。以上
の作用によつて、比較的低い圧力に昇圧された渦
室２４における主流とさらに高い圧力に昇圧さ
れた渦室２８における分岐流が単一のポンプで
容易に得られる。 21 is an impeller, and a first booster blade, that is, a main blade 22 is fixedly installed. The outer periphery of the impeller 21 is extended, and a second booster blade, that is, a sub-vane 26 is fixed such that its leading edge is located at the radially protruding rear edge of the main blade 22. . Therefore, the auxiliary blade 26 rotates together with the main blade 22 and the impeller 21 as one unit. 25 and 27 are differential users. These differential users 25, 27
are separately arranged at the trailing edges of the main blade 22 and the secondary blade 26, respectively. Deaf user 25, 27
are at the entrance of the vortex chambers 24, 28, respectively. With this configuration, the flow passing through the centrifugal pump is worked on by the main vane 22 to raise its pressure, and most of it passes through the diffuser 25 and enters the vortex chamber 24 to complete the pressure rise. On the other hand, a part of the flow that has passed through the main blade 22 is sucked into the sub-vane 26 and further pressurized, and passes through the diffuser 27 and enters the sub-vortex chamber 28 to complete the additional pressurization. 23 is a pump casing. By the above-mentioned action, the main stream in the vortex chamber 24, which is pressurized to a relatively low pressure, and the branched flow in the vortex chamber 28, which is pressurized to a higher pressure, can be easily obtained with a single pump.
第４図には両吸込式ポンプについての実施例の
断面図を示す。 FIG. 4 shows a sectional view of an embodiment of a double suction pump.
第３図におけると同様に、羽根車３１の一部を
外側へ延長し、その延長部に副羽根３６を設け
る。副羽根３６の外側にデイフユーザ３７、その
外側に副渦室３８を設ける。 As in FIG. 3, a part of the impeller 31 is extended outward, and a sub-blade 36 is provided in the extended part. A diffuser 37 is provided on the outside of the sub-vane 36, and a sub-vortex chamber 38 is provided on the outside thereof.
これによつて得られる作用および効果は前記第
３図の実施例にほゞ同じである。 The operations and effects obtained thereby are substantially the same as those of the embodiment shown in FIG. 3 above.
なお、扱われる流体は、液体気体どちらの場合
でも本発明による効果が得られることはもちろん
である。 It goes without saying that the effects of the present invention can be obtained regardless of whether the fluid being handled is liquid or gas.
発明の効果
上述のようにして単一の遠心ポンプ、遠心圧縮
機で主流の昇圧とその一部を追加昇圧させる機能
をもたすことによつて、高速回転遠心ポンプ、遠
心圧縮機のコンパクト化、台数減少をはかること
が出来、システム全体の信頼性を大幅に向上でき
る。Effects of the Invention As described above, by providing a single centrifugal pump or centrifugal compressor with the function of boosting the mainstream pressure and additionally boosting a part of it, the high-speed rotation centrifugal pump or centrifugal compressor can be made more compact. , the number of units can be reduced, and the reliability of the entire system can be greatly improved.
第１図および第２図はそれぞれ従来の片吸込式
および両吸込式遠心ポンプの断面図、第３図およ
び第４図はそれぞれ本発明の実施例の片吸込式お
よび両吸込式遠心ポンプの部分拡大断面図であ
る。
２１，３１……羽根車、２２，３２……主羽
根、２３，３３……ポンプケーシング、２４，３
４……主渦室、２５，３５……デイフユーザ、２
６，３６……副羽根、２７，３８……デイフユー
ザ。
1 and 2 are cross-sectional views of conventional single-suction and double-suction centrifugal pumps, respectively, and FIGS. 3 and 4 are sections of single-suction and double-suction centrifugal pumps according to embodiments of the present invention, respectively. It is an enlarged sectional view. 21, 31... Impeller, 22, 32... Main blade, 23, 33... Pump casing, 24, 3
4... Main vortex chamber, 25, 35... Defuser, 2
6, 36... secondary blade, 27, 38... differential user.
Claims (1)
１の昇圧羽根の半径方向に突出した後縁部に前縁
部が位置するよう上記羽根車に固設された第２の
昇圧羽根と、上記第１の昇圧羽根と上記第２の昇
圧羽根の後縁部へ別々に開口し、該開口部にはそ
れぞれデユフユーザが配置されている第１および
第２の渦室とを有することを特徴とする遠心式回
転機械。1 A first booster blade fixed to the impeller, and a second booster blade fixed to the impeller so that its leading edge is located at the radially protruding rear edge of the first booster blade. a vane, and first and second vortex chambers that open separately to trailing edges of the first booster vane and the second booster vane, and in which a dehumidifier is disposed, respectively. A centrifugal rotating machine featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6519781A JPS57181999A (en) | 1981-05-01 | 1981-05-01 | Turbo machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6519781A JPS57181999A (en) | 1981-05-01 | 1981-05-01 | Turbo machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57181999A JPS57181999A (en) | 1982-11-09 |
| JPS6354160B2 true JPS6354160B2 (en) | 1988-10-26 |
Family
ID=13279945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6519781A Granted JPS57181999A (en) | 1981-05-01 | 1981-05-01 | Turbo machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57181999A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4487548A (en) * | 1983-05-19 | 1984-12-11 | Chandler Evans Inc. | Centrifugal main fuel pump having starting element |
| US8632304B2 (en) | 2007-06-26 | 2014-01-21 | Borgwarner | Turbocharger diffuser |
| DE102007055507A1 (en) * | 2007-11-21 | 2009-06-04 | Georg Emanuel Koppenwallner | Bevel lip spiral |
| CN104265643B (en) * | 2014-10-16 | 2017-03-01 | 大连深蓝泵业有限公司 | Single-stage double-suction two-wheel double shell pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4864507A (en) * | 1971-11-26 | 1973-09-06 |
-
1981
- 1981-05-01 JP JP6519781A patent/JPS57181999A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4864507A (en) * | 1971-11-26 | 1973-09-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57181999A (en) | 1982-11-09 |
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