JP2002138991A - Double suction volute pump - Google Patents

Double suction volute pump

Info

Publication number
JP2002138991A
JP2002138991A JP2000337497A JP2000337497A JP2002138991A JP 2002138991 A JP2002138991 A JP 2002138991A JP 2000337497 A JP2000337497 A JP 2000337497A JP 2000337497 A JP2000337497 A JP 2000337497A JP 2002138991 A JP2002138991 A JP 2002138991A
Authority
JP
Japan
Prior art keywords
volute
blades
impeller
casing
sides
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
Application number
JP2000337497A
Other languages
Japanese (ja)
Inventor
Shuichiro Honda
修一郎 本田
Takashi Sugaya
隆 菅谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebara Corp
Original Assignee
Ebara Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ebara Corp filed Critical Ebara Corp
Priority to JP2000337497A priority Critical patent/JP2002138991A/en
Publication of JP2002138991A publication Critical patent/JP2002138991A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a double suction volute pump capable of effectively reducing pressure pulsation of the double suction volute pump using a volute casing having a plurality of volute flow passages as the volute casing. SOLUTION: This double suction volute pump is constituted such that an impeller 10 having such structure that a plurality of vanes 11 are provided at equal pitch intervals on both sides of a partitioning plate 13 is stored inside the volute casing 31 having a plurality of volute flow passages 32-1, 32-2 and suction casings for letting fluid flow in for the vanes 11 on both sides partitioned by the partitioning plate 13 are provided. The vanes 11 on both sides of the partitioning plate 13 of the impeller 10 are provided by shifting by a predetermined phase angle so that an outer peripheral end part of any vane 11 on the other side is not positioned in a rolling start end part a2 of the volute flow passage 32-2 on the other side when an outer peripheral end part (b) of any vane 11 on one side is positioned in a rolling start end part a1 of the volute flow passage 32-1 on one side.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は渦巻ポンプに関し、
特に左右2つの吸込口から羽根車に流体を吸い込んで1
つの吐出口から吐出する構造の両吸込渦巻ポンプに関す
るものである。
The present invention relates to a centrifugal pump.
In particular, the fluid is sucked into the impeller from the two
The present invention relates to a double suction centrifugal pump having a structure of discharging from one discharge port.

【0002】[0002]

【従来の技術】両吸込渦巻ポンプは図3に示すように、
ポンプケーシング30内に回転軸80に固定した羽根車
40を収納して構成されている。ここでポンプケーシン
グ30は羽根車40を収納するボリュートケーシング3
1と、ボリュートケーシング31の外側に一体に設けら
れる吸込ケーシング34とによって構成されている。吸
込ケーシング34は1つの吸込口35が吸込ケーシング
34の内部でボリュートケーシング31によって2つに
分離された後に渦巻状に捲かれ、ボリュートケーシング
31の両側に設けた流入口37,37からボリュートケ
ーシング31内に流体を流入するように構成されてい
る。
2. Description of the Related Art As shown in FIG.
The impeller 40 fixed to the rotating shaft 80 is housed in the pump casing 30. Here, the pump casing 30 is a volute casing 3 that houses the impeller 40.
1 and a suction casing 34 integrally provided outside the volute casing 31. The suction casing 34 is spirally wound after one suction port 35 is separated into two parts by the volute casing 31 inside the suction casing 34, and the suction casing 34 is supplied from the inlets 37 provided on both sides of the volute casing 31. It is configured to flow fluid into the interior.

【0003】一方ボリュートケーシング31は渦巻状の
ダブルボリュートケーシングによって形成されており、
その内部に羽根車40を収納するように構成されてい
る。ここで図4は羽根車40を収納したボリュートケー
シング31を図3のA−A線で切断した概略断面図であ
る。同図に示すようにボリュートケーシング31は、2
つのボリュート流路32−1,32−2を形成するよう
に2つの静翼33−1,33−2を設けて構成されてい
る。ここで一方の静翼33−1の捲き始め端部a1と、
他方の静翼33−2の捲き始め端部a2とは、収納した
羽根車40の回転中心Oを中心にして180°対向する
位置に設置されており、これによって2つのボリュート
流路32−1,32−2が回転中心Oに対して対称とな
るように構成されている。なお両ボリュート流路32−
1,32−2は静翼33−2の終端部分において合流し
ている。
On the other hand, the volute casing 31 is formed by a spiral double volute casing.
The impeller 40 is configured to be housed therein. Here, FIG. 4 is a schematic sectional view of the volute casing 31 housing the impeller 40, taken along the line AA in FIG. As shown in FIG.
Two vanes 33-1 and 33-2 are provided so as to form two volute channels 32-1 and 32-2. Here, the winding start end a1 of one of the stationary blades 33-1 is
The winding start end a2 of the other stationary blade 33-2 is installed at a position 180 ° opposite to the center of rotation O of the accommodated impeller 40, whereby the two volute flow paths 32-1 are formed. , 32-2 are symmetrical with respect to the rotation center O. Note that both volute channels 32-
1 and 32-2 join at the end portion of the stationary blade 33-2.

【0004】このようにボリュートケーシング31とし
て2つのボリュート流路32−1,32−2を有するダ
ブルボリュートケーシングを用いるのは、ボリュート流
路32−1,32−2を点対称に設置することによっ
て、羽根車40と回転軸80に加わるラジアル・スラス
ト力を相殺して低減させるためである。
The use of a double volute casing having two volute passages 32-1 and 32-2 as the volute casing 31 is achieved by installing the volute passages 32-1 and 32-2 in a point-symmetric manner. This is to offset and reduce the radial thrust force applied to the impeller 40 and the rotating shaft 80.

【0005】一方図3に示す両吸込渦巻ポンプでは、振
動の原因となる動静翼干渉による圧力脈動を低減させる
ため、羽根車40として位相ズレ羽根車を使用すること
がある。これは以下の理由による。
On the other hand, in the double-suction volute pump shown in FIG. 3, a phase shift impeller may be used as the impeller 40 in order to reduce pressure pulsation due to interference between the moving and stationary blades which causes vibration. This is for the following reason.

【0006】即ち通常の羽根車40は図5に示すよう
に、奇数枚(図では五枚)の翼41を等翼ピッチに設け
て構成されている。即ちこの実施形態では翼ピッチは、
360°/5=72°である。しかしながらこの羽根車
40の場合、例えば図4において翼(動翼)41の外周
端部bが静翼33−1(又は33−2)の捲き始め端部
a1(又はa2)を通過するとき、動静翼干渉が生じ、
その周期の圧力脈動が発生し、これがポンプ振動の原因
となっていた。そこで図6に示すように、羽根車40の
中央に仕切り板43を設け、仕切り板43の両面にそれ
ぞれ等翼ピッチで奇数枚(図では5枚)の翼41を設
け、両面の翼41の位相を〔翼ピッチ/2〕だけずらし
てなる構造の位相ズレ羽根車40が開発されている。こ
の場合両面の翼41の位相ズレ角は、72°/2=36
°になる。このように構成すれば、図4に示す1つの静
翼33−1(又は33−2)の捲き始め端部a1(又は
a2)における動静翼干渉による圧力脈動は通過する翼
41の外周端部bの幅が半分になるので半減する。そし
てもしボリュートケーシング31が一方の静翼33−2
のないボリュートケーシングであれば、圧力脈動低減効
果は大きい。しかしながらボリュートケーシング31と
して図4に示すダブルボリュートケーシングを用いてい
る場合は、一方の面の何れかの翼41の外周端部bが、
一方の静翼33−1の捲き始め端部a1に位置したとき
に、他方の面の何れかの翼41の外周端部bが、他方の
静翼33−2の捲き始め端部a2に位置することとなる
ので、両端部a1,a2において同時に静動翼干渉が生
じ、このためダブルボリュートケーシングの場合は圧力
脈動低減効果はほとんど得られなかった。
That is, as shown in FIG. 5, an ordinary impeller 40 is constituted by providing an odd number (five in the figure) of blades 41 at an equal blade pitch. That is, in this embodiment, the blade pitch is
360 ° / 5 = 72 °. However, in the case of the impeller 40, for example, in FIG. 4, when the outer peripheral end b of the blade (moving blade) 41 passes through the winding start end a1 (or a2) of the stationary blade 33-1 (or 33-2), Rotor and vane interference occurs,
A pressure pulsation of the cycle was generated, which caused the pump to vibrate. Therefore, as shown in FIG. 6, a partition plate 43 is provided at the center of the impeller 40, and odd-numbered (five in the figure) blades 41 are provided on both surfaces of the partition plate 43 at the same blade pitch. A phase shift impeller 40 having a structure in which the phase is shifted by [blade pitch / 2] has been developed. In this case, the phase shift angle of the wings 41 on both surfaces is 72 ° / 2 = 36.
°. With this configuration, the pressure pulsation due to the moving and stationary blade interference at the winding start end a1 (or a2) of one stationary blade 33-1 (or 33-2) shown in FIG. Since the width of b is halved, it is halved. And if the volute casing 31 is one of the stationary blades 33-2
The pressure pulsation reduction effect is great if the volute casing does not have any. However, when the double volute casing shown in FIG. 4 is used as the volute casing 31, the outer peripheral end b of any of the blades 41 on one surface is
When located at the winding start end a1 of one stationary blade 33-1, the outer peripheral end b of any of the blades 41 on the other surface is located at the winding start end a2 of the other stationary blade 33-2. Therefore, stationary blade interference occurs at both ends a1 and a2 at the same time, so that the pressure pulsation reduction effect was hardly obtained in the case of the double volute casing.

【0007】また翼41の枚数を奇数枚としているの
は、偶数枚にするとダブルボリュートケーシング31の
両捲き始め端部a1,a2に同時に翼41の外周端部b
が位置し、圧力脈動が大きくなるからであり、外周端部
が同時に両捲き始め端部に位置しないように構成するた
めである。
The reason why the number of the wings 41 is odd is that if the number of the wings 41 is an even number, the outer peripheral end b of the wing 41 is simultaneously placed on both winding start ends a1 and a2 of the double volute casing 31.
This is because pressure pulsation is increased, and the outer peripheral end is configured so as not to be located at both winding start ends at the same time.

【0008】[0008]

【発明が解決しようとする課題】本発明は上述の点に鑑
みてなされたものでありその目的は、ボリュートケーシ
ングとして複数のボリュート流路を有するボリュートケ
ーシングを用いた両吸込渦巻ポンプの圧力脈動を効果的
に低減できる両吸込渦巻ポンプを提供することにある。
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the pressure pulsation of a double suction centrifugal pump using a volute casing having a plurality of volute passages as the volute casing. An object of the present invention is to provide a double suction volute pump which can be effectively reduced.

【0009】[0009]

【課題を解決するための手段】上記問題点を解決するた
め本発明は、複数のボリュート流路を有するボリュート
ケーシングの内部に、仕切り板の両側にそれぞれ等ピッ
チ間隔に複数の翼を設けてなる構造の羽根車を収納し、
さらに前記仕切り板で仕切った両側の翼に対してそれぞ
れ流体を流入せしめる吸込ケーシングを設けてなる両吸
込渦巻ポンプにおいて、前記羽根車の仕切り板の両側の
翼は、一方の側の何れかの翼の外周端部が一つのボリュ
ート流路の捲き始め端部に位置する際に、他方の側の何
れの翼の外周端部も他のボリュート流路の捲き始め端部
に位置しないように、所定の位相角ずつずらして設けら
れていることを特徴とする。これによって両捲き始め端
部において同時に静動翼干渉が生じることはなく、ボリ
ュートケーシングとして複数のボリュート流路を有する
ボリュートケーシングを用いた両吸込渦巻ポンプであっ
ても、その圧力脈動を効果的に低減できる。
According to the present invention, there is provided a volute casing having a plurality of volute flow paths, and a plurality of blades provided at equal pitch intervals on both sides of a partition plate. The impeller of the structure is stored,
Further, in the two-suction volute pump provided with suction casings for allowing a fluid to flow into the blades on both sides partitioned by the partition plate, the blades on both sides of the partition plate of the impeller may be any one of the blades on one side. When the outer peripheral end of one of the blades is located at the beginning of winding of one volute flow path, the outer peripheral end of any blade on the other side is not positioned at the beginning of winding of the other volute flow path. Are provided with a phase angle shift of As a result, no stationary blade interference occurs at both winding start ends at the same time, and even in the case of a double suction volute pump using a volute casing having a plurality of volute flow paths as the volute casing, the pressure pulsation can be effectively reduced. Can be reduced.

【0010】また前記ボリュート流路は2つであり、両
ボリュート流路の捲き始め端部は180°対向する位置
にあり、且つ前記仕切り板の両側の翼の位相のずれ角
は、翼ピッチの1/4であることを特徴とする。
[0010] Further, there are two volute flow paths, the winding start ends of both volute flow paths are located at 180 ° opposite positions, and the phase shift angle of the blades on both sides of the partition plate is the blade pitch. It is characterized in that it is 1/4.

【0011】[0011]

【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して詳細に説明する。図1は本発明の両吸込渦巻
ポンプに用いる羽根車10を示す図であり、同図(a)
は平面図、同図(b)は正面図、同図(c)は断面図で
ある。同図に示すようにこの羽根車10は位相ズレ羽根
車であり、羽根車10の中央に仕切り板13を設け、仕
切り板13の両側にそれぞれ等翼ピッチで奇数枚(五
枚)の翼11を設け、両側の翼11の位相を〔翼ピッチ
/4〕だけずらしてなる構造に構成されている。つまり
両面の翼11の位相ズレ角は、72°/4=18°にな
る。
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a view showing an impeller 10 used in the double suction volute pump of the present invention, and FIG.
Is a plan view, (b) is a front view, and (c) is a cross-sectional view. As shown in FIG. 1, the impeller 10 is a phase shift impeller. A partition plate 13 is provided at the center of the impeller 10, and an odd number (five) of blades 11 are provided on both sides of the partition plate 13 at an equal blade pitch. And the phases of the blades 11 on both sides are shifted by [blade pitch / 4]. That is, the phase shift angle of the blades 11 on both sides is 72 ° / 4 = 18 °.

【0012】図2はこの羽根車10をボリュートケーシ
ング31内に収納した状態を示す概略断面図(図3のA
−A断面図)である。このボリュートケーシング31は
前記図4に示すものと同一構造であり、2つのボリュー
ト流路32−1,32−2を形成するように2つの静翼
33−1,33−2を設け、一方の静翼33−1の捲き
始め端部a1と、他方の静翼33−2の捲き始め端部a
2とが、収納した羽根車10の回転中心Oを中心にして
180°対向する位置に設置され、これによって2つの
ボリュート流路32−1,32−2が回転中心Oに対し
て対称となるように構成されている。なお両ボリュート
流路32−1,32−2は静翼33−2の終端部分にお
いて合流している。
FIG. 2 is a schematic sectional view showing the impeller 10 housed in a volute casing 31 (A in FIG. 3).
-A sectional view). The volute casing 31 has the same structure as that shown in FIG. 4, and is provided with two stationary vanes 33-1 and 33-2 so as to form two volute flow paths 32-1 and 32-2. Winding start end a1 of the stationary blade 33-1 and winding start end a of the other stationary blade 33-2
2 is installed at a position 180 ° opposite to the center of rotation O of the stored impeller 10, whereby the two volute channels 32-1 and 32-2 are symmetrical with respect to the center of rotation O. It is configured as follows. The two volute flow paths 32-1 and 32-2 join at the terminal end of the stationary blade 33-2.

【0013】そして本発明にかかる羽根車10の場合、
一方の面の翼11の外周端部bが一方の静翼33−1の
捲き始め端部a1に位置したときに、他方の面の翼11
の外周端部は他方の静翼33−2の捲き始め端部a2に
位置しない。従って両端部a1,a2において同時に静
動翼干渉が生じることはなく、このためボリュートケー
シング31としてダブルボリュートケーシングを用いた
場合でも、圧力脈動を低減させることができる。
In the case of the impeller 10 according to the present invention,
When the outer peripheral end b of the blade 11 on one surface is located at the winding start end a1 of one stationary blade 33-1, the blade 11 on the other surface
Is not located at the winding start end a2 of the other stationary blade 33-2. Therefore, no stationary blade interference occurs at both ends a1 and a2 at the same time. Therefore, even when a double volute casing is used as the volute casing 31, pressure pulsation can be reduced.

【0014】ところで上記実施形態では両側の翼11の
位相を〔翼ピッチ/4〕だけずらすことで圧力脈動を低
減させたが、ずらす位相角度は種々変更でき、要は一方
の側の何れかの翼11の外周端部が一つのボリュート流
路32−1(又は32−2)の捲き始め端部a1(又は
a2)に位置する際に、他方の側の何れの翼11の外周
端部も他のボリュート流路32−2(又は32−1)の
捲き始め端部a2(又はa1)に位置しないように、所
定の位相角だけずらして設けるものであれば良い。
In the above embodiment, the pressure pulsation is reduced by shifting the phases of the blades 11 on both sides by [blade pitch / 4]. However, the phase angle to be shifted can be variously changed. When the outer peripheral end of the wing 11 is located at the winding start end a1 (or a2) of one volute flow path 32-1 (or 32-2), the outer peripheral end of any of the wings 11 on the other side is also removed. What is necessary is just to provide it by predetermined phase angle so that it may not be located in the winding start end part a2 (or a1) of other volute flow paths 32-2 (or 32-1).

【0015】またボリュートケーシング31によって
は、静翼33−1の捲き始め端部a1と静翼33−2の
捲き始め端部a2とが180度対向する位置以外の位置
に設定される場合も考えられるが、その場合でも同様に
一方の側の何れかの翼11の外周端部が一つの捲き始め
端部a1(又はa2)に位置する際に、他方の側の何れ
の翼11の外周端部も他の捲き始め端部a2(又はa
1)に位置しないように位相をずらせば良い。
Further, depending on the volute casing 31, it may be considered that the winding start end a1 of the stationary blade 33-1 and the winding start end a2 of the stationary blade 33-2 are set at positions other than the position where they face 180 degrees. However, in this case, similarly, when the outer peripheral end of one of the blades 11 on one side is located at one winding start end a1 (or a2), the outer peripheral end of any of the blades 11 on the other side is similarly. The part is also another winding start end a2 (or a
The phase may be shifted so as not to be located in 1).

【0016】またボリュート流路が3以上あって捲き始
め端部が3以上ある場合も同様に、一方の側の何れかの
翼11の外周端部が1つのボリュート流路の捲き始め端
部に位置する際に、他方の側の何れの翼11の外周端部
も他のボリュート流路の捲き始め端部に位置しないよう
に位相をずらすようにすれば良い。
Similarly, when there are three or more volute flow paths and three or more winding start ends, the outer peripheral end of one of the blades 11 on one side is located at the winding start end of one volute flow path. When it is positioned, the phase may be shifted so that the outer peripheral end of any of the blades 11 on the other side is not located at the winding start end of the other volute flow path.

【0017】以上本発明の実施形態を説明したが、本発
明は上記実施形態に限定されるものではなく、特許請求
の範囲、及び明細書と図面に記載された技術的思想の範
囲内において種々の変形が可能である。なお直接明細書
及び図面に記載がない何れの形状や構造や材質であって
も、本願発明の作用・効果を奏する以上、本願発明の技
術的思想の範囲内である。
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims and the technical idea described in the specification and the drawings. Is possible. Note that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and effects of the present invention are exhibited.

【0018】[0018]

【発明の効果】以上詳細に説明したように本発明によれ
ば、一方の側の何れかの翼の外周端部が1つのボリュー
ト流路の捲き始め端部に位置する際に、他方の側の何れ
の翼の外周端部も他のボリュート流路の捲き始め端部に
位置することはなく、複数の捲き始め端部において同時
に静動翼干渉は生じず、このためボリュートケーシング
として複数のボリュート流路を有するボリュートケーシ
ングを用いた両吸込渦巻ポンプであっても、その圧力脈
動を効果的に低減できる。
As described in detail above, according to the present invention, when the outer peripheral end of one of the blades on one side is located at the winding start end of one volute flow path, the other side is The outer peripheral end of any of the blades is not located at the winding start end of the other volute flow path, and no static and moving blade interference occurs at a plurality of winding start ends at the same time. Even in the case of a double suction volute pump using a volute casing having a flow path, the pressure pulsation can be effectively reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の両吸込渦巻ポンプに用いる羽根車10
を示す図であり、同図(a)は平面図、同図(b)は正
面図、同図(c)は断面図である。
FIG. 1 is an impeller 10 used in a double-suction volute pump of the present invention.
3A is a plan view, FIG. 3B is a front view, and FIG. 3C is a cross-sectional view.

【図2】羽根車10をボリュートケーシング31内に収
納した状態を示す概略断面図(図3のA−A断面図)で
ある。
FIG. 2 is a schematic cross-sectional view (a cross-sectional view along AA in FIG. 3) showing a state in which the impeller 10 is housed in a volute casing 31.

【図3】両吸込渦巻ポンプを示す図であり、図3(a)
は断面図、図3(b)は図3(a)の左側面図、図3
(c)は図3(a)の正面図である。
FIG. 3 is a diagram showing a double suction centrifugal pump, and FIG.
3B is a sectional view, FIG. 3B is a left side view of FIG.
FIG. 3C is a front view of FIG.

【図4】羽根車40をボリュートケーシング31内に収
納した状態を示す概略断面図(図3のA−A断面図)で
ある。
FIG. 4 is a schematic cross-sectional view (a cross-sectional view taken along the line AA in FIG. 3) showing a state where the impeller 40 is housed in the volute casing 31.

【図5】通常の羽根車40を示す図であり、同図(a)
は平面図、同図(b)は正面図、同図(c)は断面図で
ある。
FIG. 5 is a view showing a normal impeller 40, and FIG.
Is a plan view, (b) is a front view, and (c) is a cross-sectional view.

【図6】仕切り板43の両側の翼41の位相をずらした
羽根車40を示す図であり、同図(a)は平面図、同図
(b)は正面図、同図(c)は断面図である。
6A and 6B are views showing an impeller 40 in which the phases of blades 41 on both sides of a partition plate 43 are shifted, wherein FIG. 6A is a plan view, FIG. 6B is a front view, and FIG. It is sectional drawing.

【符号の説明】[Explanation of symbols]

10 羽根車 11 翼 b 外周端部 13 仕切り板 30 ケーシング 31 ボリュートケーシング 32−1,32−2 ボリュート流路 33−1,33−2 静翼 a1,a2 捲き始め端部 33 吸込ケーシング 35 吸込口 37 流入口 80 回転軸 REFERENCE SIGNS LIST 10 impeller 11 blade b outer peripheral end 13 partition plate 30 casing 31 volute casing 32-1, 32-2 volute flow path 33-1, 33-2 stationary vane a1, a2 winding start end 33 suction casing 35 suction port 37 Inlet 80 Rotation axis

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 複数のボリュート流路を有するボリュー
トケーシングの内部に、仕切り板の両側にそれぞれ等ピ
ッチ間隔に複数の翼を設けてなる構造の羽根車を収納
し、さらに前記仕切り板で仕切った両側の翼に対してそ
れぞれ流体を流入せしめる吸込ケーシングを設けてなる
両吸込渦巻ポンプにおいて、 前記羽根車の仕切り板の両側の翼は、一方の側の何れか
の翼の外周端部が一つのボリュート流路の捲き始め端部
に位置する際に、他方の側の何れの翼の外周端部も他の
ボリュート流路の捲き始め端部に位置しないように、所
定の位相角ずつずらして設けられていることを特徴とす
る両吸込渦巻ポンプ。
An impeller having a structure in which a plurality of blades are provided at equal pitch intervals on both sides of a partition plate is housed inside a volute casing having a plurality of volute flow paths, and further partitioned by the partition plate. In a double-suction volute pump comprising suction casings for allowing fluid to flow into the blades on both sides, the blades on both sides of the partition plate of the impeller have one outer peripheral end of one of the blades on one side. When positioned at the winding start end of the volute flow path, the outer peripheral end of any blade on the other side is provided at a predetermined phase angle so as not to be positioned at the winding start end of the other volute flow path. A double suction centrifugal pump characterized by being used.
【請求項2】 前記ボリュート流路は2つであり、両ボ
リュート流路の捲き始め端部は180°対向する位置に
あり、且つ前記仕切り板の両側の翼の位相のずれ角は、
翼ピッチの1/4であることを特徴とする請求項1記載
の両吸込渦巻ポンプ。
2. The method according to claim 2, wherein the number of the volute flow paths is two, the winding start ends of the two volute flow paths are located at positions opposite to each other by 180 °, and the phase shift angles of the blades on both sides of the partition plate are:
2. The double suction centrifugal pump according to claim 1, wherein the pitch is 1/4 of the blade pitch.
JP2000337497A 2000-11-06 2000-11-06 Double suction volute pump Pending JP2002138991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000337497A JP2002138991A (en) 2000-11-06 2000-11-06 Double suction volute pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000337497A JP2002138991A (en) 2000-11-06 2000-11-06 Double suction volute pump

Publications (1)

Publication Number Publication Date
JP2002138991A true JP2002138991A (en) 2002-05-17

Family

ID=18812869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000337497A Pending JP2002138991A (en) 2000-11-06 2000-11-06 Double suction volute pump

Country Status (1)

Country Link
JP (1) JP2002138991A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007051551A (en) * 2005-08-15 2007-03-01 Hitachi Plant Technologies Ltd Double suction volute pump
JP2008008154A (en) * 2006-06-27 2008-01-17 Hitachi Plant Technologies Ltd Double suction centrifugal pump
CN100392253C (en) * 2005-10-27 2008-06-04 陈瑜 Centrifugal pump
CN100392255C (en) * 2005-10-28 2008-06-04 陈瑜 Centrifugal fan
CN100392254C (en) * 2005-10-27 2008-06-04 陈瑜 Impellor used for centrifugal pump and centrifugal type fan
JP2009526915A (en) * 2006-02-01 2009-07-23 メッツォ ペーパー インコーポレイテッド Method of supplying chemicals or compounds in a fiber web machine and apparatus for carrying out the method
CN103334932A (en) * 2013-06-26 2013-10-02 苏州经贸职业技术学院 Double-suction coning constant pressure pump
CN103362822A (en) * 2012-04-10 2013-10-23 株式会社日立工业设备技术 Spiral pump
CN103994097A (en) * 2014-04-29 2014-08-20 江苏大学 Double-suction impeller and double-suction vortex pump
CN107810331A (en) * 2015-06-30 2018-03-16 Ksb 股份公司 Turo pump
WO2021051789A1 (en) * 2019-09-18 2021-03-25 中山大洋电机股份有限公司 Induced draft fan
WO2021120457A1 (en) * 2019-12-17 2021-06-24 中山大洋电机股份有限公司 Induced draft fan
KR102428874B1 (en) * 2021-12-01 2022-08-03 (주)그린텍 impeller for volute pump with double-suction

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4696774B2 (en) * 2005-08-15 2011-06-08 株式会社日立プラントテクノロジー Double suction centrifugal pump
JP2007051551A (en) * 2005-08-15 2007-03-01 Hitachi Plant Technologies Ltd Double suction volute pump
CN100392253C (en) * 2005-10-27 2008-06-04 陈瑜 Centrifugal pump
CN100392254C (en) * 2005-10-27 2008-06-04 陈瑜 Impellor used for centrifugal pump and centrifugal type fan
CN100392255C (en) * 2005-10-28 2008-06-04 陈瑜 Centrifugal fan
US8126583B2 (en) 2006-02-01 2012-02-28 Metso Paper, Inc. Method for supplying a chemical or chemical compound in a fibrous web machine and an apparatus for implementing the method
JP2009526915A (en) * 2006-02-01 2009-07-23 メッツォ ペーパー インコーポレイテッド Method of supplying chemicals or compounds in a fiber web machine and apparatus for carrying out the method
JP4733749B2 (en) * 2006-02-01 2011-07-27 メッツォ ペーパー インコーポレイテッド Method of supplying chemicals or compounds in a fiber web machine and apparatus for carrying out the method
JP2008008154A (en) * 2006-06-27 2008-01-17 Hitachi Plant Technologies Ltd Double suction centrifugal pump
CN103362822A (en) * 2012-04-10 2013-10-23 株式会社日立工业设备技术 Spiral pump
CN103334932A (en) * 2013-06-26 2013-10-02 苏州经贸职业技术学院 Double-suction coning constant pressure pump
CN103334932B (en) * 2013-06-26 2016-03-23 苏州经贸职业技术学院 A kind of double suction coning constant pressure pump
CN103994097A (en) * 2014-04-29 2014-08-20 江苏大学 Double-suction impeller and double-suction vortex pump
CN107810331A (en) * 2015-06-30 2018-03-16 Ksb 股份公司 Turo pump
WO2021051789A1 (en) * 2019-09-18 2021-03-25 中山大洋电机股份有限公司 Induced draft fan
WO2021120457A1 (en) * 2019-12-17 2021-06-24 中山大洋电机股份有限公司 Induced draft fan
KR102428874B1 (en) * 2021-12-01 2022-08-03 (주)그린텍 impeller for volute pump with double-suction

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