JPS5857096A - Method and device for preventing distortion of shaft generated in lateral type circulating pump transporting medium having high temperature - Google Patents
Method and device for preventing distortion of shaft generated in lateral type circulating pump transporting medium having high temperatureInfo
- Publication number
- JPS5857096A JPS5857096A JP57155770A JP15577082A JPS5857096A JP S5857096 A JPS5857096 A JP S5857096A JP 57155770 A JP57155770 A JP 57155770A JP 15577082 A JP15577082 A JP 15577082A JP S5857096 A JPS5857096 A JP S5857096A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- circulation pump
- shaft
- circulation
- casing
- 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
- 238000000034 method Methods 0.000 title claims description 8
- 238000001816 cooling Methods 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
-
- 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
- F04D29/128—Shaft sealings using sealing-rings especially adapted for liquid pumps with special means for adducting cooling or sealing fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、冷却するようにされたノ（ツキングを備えた
高温の媒体を移送する横型循環ポンプに生じるシャフト
のゆがみを防止する方法と該方法を実施する装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing shaft distortions occurring in a horizontal circulation pump for transporting hot media with a pump provided for cooling, and to an apparatus for carrying out the method.
一般に、高温の媒体を移送するポンプは冷却するように
されたバッキングを備えている。この種のポンプの運転
が止まると、ポンプのインペラー室と封止ケーシングと
の間に熱的なサイフオン現象によシ循環が生じるが、こ
の循環は冷却媒体または冷却により冷却された媒体とポ
ンプ内に残留している高温の媒体との間にみられる封止
機能の差に帰因して生じるものである。Generally, pumps that transport hot media are equipped with a backing that is adapted to be cooled. When this type of pump stops operating, a thermal siphon phenomenon occurs between the impeller chamber of the pump and the sealed casing, causing a circulation between the cooling medium or the cooled medium inside the pump. This occurs due to the difference in sealing function between the high-temperature medium and the remaining high-temperature medium.
低温の媒体はポンプ内壁に沿いシャフトの内側に向かっ
て流れ、一方、高温の媒体はバッキングに沿いシャフト
外側に向かって流出する。シャフトに沿って流出する液
体の温度は直接シャフトに伝達されるので、シャフトと
ポンプ・ケーシングにゆがみが生じ、このためポンプ・
シャフトを回すことができなくなる、しかも、冷却用ジ
ャケットがポンプ・ケーシングに取Ｆ）付けられている
場合、不利な結果を伴なうこのような熱的サイフオン現
象に付随して生じる循環作用が増大する。The cold medium flows along the pump inner wall toward the inside of the shaft, while the hot medium flows along the backing toward the outside of the shaft. The temperature of the liquid flowing out along the shaft is transferred directly to the shaft, causing distortion of the shaft and pump casing, which causes the pump to
If it becomes impossible to turn the shaft, and a cooling jacket is attached to the pump casing, the circulatory effects associated with such thermal siphon phenomena are increased, with adverse consequences. do.
ゆがみが生じてポンプ・シャフトを回すことができなく
なることを防止するため、従来、ポンプが停止したとき
臨界温度を下回ったレベルまで媒体が冷却するまでポン
プ内に包有されている媒森を全回転させるかあるいは熱
的なサイフオン現象、Ｋ付随して生じる循環が持続する
ことをなくすため、ポンプ・ケーシングに段階的に媒体
を貫流させることが提案されている。しかし、上記２つ
の提案を実施するには少なからぬ費用を要することは容
易に理解していただけよう。To avoid distortions that would prevent the pump shaft from turning, conventionally the media contained within the pump was completely drained until the media had cooled to a level below the critical temperature when the pump was stopped. In order to eliminate rotational or thermal siphon effects, K, and the concomitant circulation, it has been proposed to flow the medium through the pump housing in stages. However, it is easy to understand that implementing the above two proposals will require considerable costs.
したが９て、本発明の目的は、比較的わずかな費用をか
けるだけで当初に挙げた種類の循環ポンプに生じる上述
のシャフトのゆがみを防止することである。It is therefore an object of the invention to prevent the above-mentioned shaft distortions that occur in circulation pumps of the initially mentioned type at relatively little outlay.
上記の目的を達成するため、循環ポンプのケーシング入
口またはケーシング端部と封止室の間でポンプ・シャフ
トとケーシングにより形成された絞り間隙を通って循環
ポンプが停止したときポンプ・シャフトの全周を包み囲
むように流れる洗滌流を導くよう構成することに工り達
成されたのである。In order to achieve the above purpose, the entire circumference of the pump shaft when the circulation pump is stopped through the throttling gap formed by the pump shaft and the casing between the casing inlet or casing end of the circulation pump and the sealing chamber. This was achieved by configuring the structure to guide the washing stream that flows around the area.
本発明に係る方法を実施する装置はボンゾ設備丙で利用
することができる他の媒体を１史用し２てもよく、循環
ポンプ自身から抽出した媒体を使用してもよい、
従来公知の装置と異なり、本発明に係る装置においては
熱的カサイフォン現象に伴なう循環の発生を阻止するこ
とができる。１すなわち、シャフトのまわりを洗滌する
ように流れる比較的小量の液体を利用することによシ前
記の効果を挙げることができる。The apparatus for carrying out the method according to the invention may use other media available in the Bonzo equipment, or may use media extracted from the circulation pump itself, as is known in the art. In contrast, in the device according to the invention, it is possible to prevent the circulation associated with the thermal cassiphon phenomenon from occurring. 1. That is, the above effects can be achieved by using a relatively small amount of liquid flowing around the shaft in a cleaning manner.
以下、本発明の一実施例を図解した冷付図面を参照しな
がら本発明の詳細な説明する。冷付図面は、循環ポンプ
のうちシャフトがゆがむ危険がある領域を図解した部分
断面図である。Hereinafter, the present invention will be described in detail with reference to cooling drawings illustrating one embodiment of the present invention. The cooling drawing is a partial sectional view illustrating a region of the circulation pump where there is a risk of shaft distortion.
循環ポンプのインペラー２がポンプ畳シャフト１上に取
り付けられている。循環ポンプのポンプ室４と封止室５
が絞り間隙３を介在させて分離されている。ケーシング
６の中に冷却室７が設けられており、通路８をへて前記
冷却室７に冷却液を供給するようになっている。ケーシ
ング端
行なうことができるようにするためスライド−リング式
バッキング９が設けられている。An impeller 2 of a circulation pump is mounted on a pump shaft 1. Pump chamber 4 and sealing chamber 5 of circulation pump
are separated by an aperture gap 3. A cooling chamber 7 is provided in the casing 6, and a cooling liquid is supplied to the cooling chamber 7 through a passage 8. A slide-ring backing 9 is provided to allow the casing end to be removed.
循環ポンプが停止しているときに生じるポンプ・シャフ
ト１のゆがみはポンプ室４と封止室５との間で生じる液
体の交換流に起因するものである、さらに詳しく言えば
、封止状態に差があるため、循環冷却により冷却された
１体がポンプ・シャフト１め外側にある封止室５より絞
り間隙３をへてポンプ室４に流れ、一方、高温の媒体が
ポンプ・シャフト１の内側から封止室５に流れようとす
る。このためシャフトの内側と外側□の間に大きい温度
差が生じることになる。The distortion of the pump shaft 1 that occurs when the circulation pump is stopped is due to the exchange flow of liquid that occurs between the pump chamber 4 and the sealing chamber 5; Because of the difference, one body cooled by circulation cooling flows from the sealing chamber 5 on the outside of the pump shaft 1 through the throttle gap 3 to the pump chamber 4, while the high temperature medium flows on the outside of the pump shaft 1. It tries to flow into the sealing chamber 5 from inside. This results in a large temperature difference between the inside and outside of the shaft.
この温度差のため生じる熱的なサイフオン現象に付随す
る循環は、ケーシング６の冷却室７により行なわれるよ
うなジャケット冷却により増大する、
本発明に係る方法を実施する装置としては、別個に運転
される図示しない循環式のポンプを用い、該循環ポンプ
に付設された図示しない補助装置により液体を抽出し、
これにより得られる洗滌流を利用する。なお、上記循環
ポンプは、停止したとき過圧状態を保つものを用いる。The circulation associated with the thermal siphon phenomenon caused by this temperature difference is increased by jacket cooling, such as that provided by the cooling chamber 7 of the casing 6. A circulation type pump (not shown) is used to extract the liquid with an auxiliary device (not shown) attached to the circulation pump,
The washing flow obtained by this is utilized. Note that the circulation pump used is one that maintains an overpressure state when it is stopped.
しかして、循環ポンプが停止している間、絞り間隙３を
通って流れる貫流を発生させると、熱サイノオン現象に
付随する循環にオーバーランプして洗滌流が生じ、ポン
プ・シャツ１の全周を包み囲むよう忙流れるこの洗滌流
の作用によりシャフト全体のまわりの温度を均一になら
−１ことができ、シャフトのゆがみを有効に防市−ｊ°
ることかできる。Therefore, when the circulation pump is stopped and a through flow is generated through the restriction gap 3, the circulation accompanying the thermal sinon phenomenon is overramped and a washing flow is generated, which covers the entire circumference of the pump shirt 1. Due to the action of this washing current that flows around the shaft, the temperature around the entire shaft can be made uniform, and distortion of the shaft can be effectively prevented.
I can do that.
添付図面は、本発明に係る装置を循環・トップに組み込
んだ状態を概念的に図解した断面図、１・・・・・・ポ
ンプ・シャフト、
２・・・・・・循環ポンプのインペラー、３・・・・・
・絞り間隙、 ４・・・・・・ポンプ室、５・・・・
・−封止室、 ６・・・・・・ケーシンク、７・・
・・・・伶却室、 ８・・・・・・通路、９・・・
・・・スライド争リング式バッキング、１０・・・・・
・通路。The attached drawings are cross-sectional views conceptually illustrating the state in which the device according to the present invention is incorporated into a circulation top, 1... pump shaft, 2... impeller of circulation pump, 3・・・・・・
- Throttle gap, 4...Pump chamber, 5...
・-Sealing chamber, 6... Case sink, 7...
...Conveyance room, 8...Aisle, 9...
...Slide ring type backing, 10...
·aisle.
Claims (1)
温の媒体を移送する横型循環ポンプに生じるシャフトの
ゆがみを防止する方法であって、循環ポンプのケーシン
グ入口またはケーシング端部と封止室５の間でポンプ・
シャフト１とケーシング６により形成された絞り間隙３
を通って循環ポンプが停止したときポンプ・シャフト１
の全周を包み囲むように流れる洗滌流を導く−ことを特
徴とする方法。 （２、特許請求の範囲第１項に記載の方法を実施する装
置であって、別個に運転されるポンプによシ洗滌流を用
意することを特徴とする装置。 （３）上記洗滌流は、循環ポンプに付設された補助装置
により発生することを特徴とする特許請求の範囲第２項
記載の装置。 （４）運転中の上記循環ポンプから液体を抽出すること
により得られた上記洗滌流を利用することを特徴とする
特許請求の範囲第３項記載の装置。 （５）上記循環ポンプは、停止したとき過圧状態であり
、該循環ポンプより抽出した上記液体により上記洗滌流
を作ることを特徴とする特許請求の範囲第４項記載の装
置。[Scope of Claims] (1) A method for preventing shaft distortion occurring in a horizontal circulation pump for transferring a hot medium having a backing tempered for cooling, the method comprising: a casing inlet or a casing end of the circulation pump; and the sealing chamber 5.
Restriction gap 3 formed by shaft 1 and casing 6
When the circulation pump stops through the pump shaft 1
A method characterized by guiding a washing stream that flows around the entire circumference of the body. (2. An apparatus for carrying out the method according to claim 1, characterized in that the washing flow is prepared by a separately operated pump. (3) The washing flow is The apparatus according to claim 2, characterized in that the washing flow is generated by an auxiliary device attached to a circulation pump. (4) The washing flow obtained by extracting liquid from the circulation pump in operation. (5) The circulation pump is in an overpressure state when stopped, and the washing flow is created by the liquid extracted from the circulation pump. 5. The device according to claim 4, characterized in that:
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813136721 DE3136721A1 (en) | 1981-09-16 | 1981-09-16 | METHOD FOR AVOIDING SHAFT INTERVENTIONS IN HORIZONTAL CENTRIFUGAL PUMPS FOR CONVEYING HOT MEDIA AND DEVICES FOR IMPLEMENTING THE METHOD |
| DE31367216 | 1981-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5857096A true JPS5857096A (en) | 1983-04-05 |
Family
ID=6141795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57155770A Pending JPS5857096A (en) | 1981-09-16 | 1982-09-07 | Method and device for preventing distortion of shaft generated in lateral type circulating pump transporting medium having high temperature |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5857096A (en) |
| DE (1) | DE3136721A1 (en) |
| GB (1) | GB2106593A (en) |
| IT (1) | IT1152565B (en) |
| NL (1) | NL8203192A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021188527A (en) * | 2020-05-26 | 2021-12-13 | 株式会社荏原製作所 | Pump device |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3404964C2 (en) * | 1984-02-11 | 1995-09-07 | Allweiler Ag | Keiselpump with a shaft seal |
| GB8909504D0 (en) * | 1989-04-26 | 1989-06-14 | Weir Pumps Ltd | Pump with seal cooling means |
| DE19501900A1 (en) * | 1995-01-23 | 1996-07-25 | Klein Schanzlin & Becker Ag | Mechanical seal for boiler feed pumps |
| EP1304485B1 (en) * | 2001-10-22 | 2006-03-29 | Sulzer Pumpen Ag | Pump seal for a pump pumping hot fluids |
| DE50206223D1 (en) | 2001-10-22 | 2006-05-18 | Sulzer Pumpen Ag | Shaft sealing arrangement for a pump for conveying hot fluids |
| EP1318312A3 (en) * | 2001-12-06 | 2005-06-22 | Sachtleben Chemie GmbH | Shaft sealing system for rotary shafts on pumps |
| US9664289B2 (en) | 2012-06-06 | 2017-05-30 | General Electric Technology Gmbh | Pump sealing device |
| FR2991736A1 (en) * | 2012-06-06 | 2013-12-13 | Alstom Technology Ltd | DEVICE FOR SEALING A PUMP |
| US10557474B2 (en) | 2014-02-19 | 2020-02-11 | Sulzer Management Ag | Rotary machine and method for the heat exchange in a rotary machine |
| DE102021129695A1 (en) * | 2021-11-15 | 2023-05-17 | KSB SE & Co. KGaA | Centrifugal pump with cooling insert |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE480842C (en) * | 1929-08-09 | Bbc Brown Boveri & Cie | Device for cooling the stuffing boxes in hot water pumps |
-
1981
- 1981-09-16 DE DE19813136721 patent/DE3136721A1/en not_active Withdrawn
-
1982
- 1982-08-13 NL NL8203192A patent/NL8203192A/en not_active Application Discontinuation
- 1982-09-07 JP JP57155770A patent/JPS5857096A/en active Pending
- 1982-09-10 GB GB08225875A patent/GB2106593A/en not_active Withdrawn
- 1982-09-14 IT IT23248/82A patent/IT1152565B/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021188527A (en) * | 2020-05-26 | 2021-12-13 | 株式会社荏原製作所 | Pump device |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1152565B (en) | 1987-01-07 |
| DE3136721A1 (en) | 1983-03-31 |
| IT8223248A0 (en) | 1982-09-14 |
| NL8203192A (en) | 1983-04-18 |
| GB2106593A (en) | 1983-04-13 |
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