CN204419706U - A kind of New Centrifugal Pump spiral case - Google Patents

A kind of New Centrifugal Pump spiral case Download PDF

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Publication number
CN204419706U
CN204419706U CN201520006398.XU CN201520006398U CN204419706U CN 204419706 U CN204419706 U CN 204419706U CN 201520006398 U CN201520006398 U CN 201520006398U CN 204419706 U CN204419706 U CN 204419706U
Authority
CN
China
Prior art keywords
centrifugal pump
snail tongue
chamber
fillet
spiral case
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
Application number
CN201520006398.XU
Other languages
Chinese (zh)
Inventor
郑路路
窦华书
陈小平
蒋威
牛琳
贲安庆
马晓阳
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.)
Zhejiang Sci Tech University ZSTU
Zhejiang University of Science and Technology ZUST
Original Assignee
Zhejiang Sci Tech University ZSTU
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
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Priority to CN201520006398.XU priority Critical patent/CN204419706U/en
Application granted granted Critical
Publication of CN204419706U publication Critical patent/CN204419706U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model proposes a kind of New Centrifugal Pump spiral case, existing worm frame, the fluid mobility status near snail tongue is poor, and volute outlet section streamline distribution is uneven, and the appearance of adjoint whirlpool, the performance of centrifugal pump entirety is had a certain impact.The utility model comprises a kind of New Centrifugal Pump spiral case, and described New Centrifugal Pump spiral case comprises chamber, outlet conduit and the fillet snail tongue structure between inner chamber low pressure area and zone of high pressure, and wherein the molded line of inner chamber adopts log spiral.Mainly through designing the snail tongue structure of inner chamber and outlet conduit jointing place, determine molded line parameter.Centrifugal pump spiral casing inner chamber and outlet conduit jointing place are fillet snail tongue.This fillet snail tongue molded line adopts two sections of circular arcs to combine, and circular parameters is determined by numerical computation method optimization, and the connection between curve is for being smoothly connected.The utility model can improve the mobility status of snail tongue portion fluid, makes the Flow Distribution of volute outlet section comparatively even, thus improves centrifugal pump performance.

Description

A kind of New Centrifugal Pump spiral case
Technical field
The utility model belongs to turbomachine field, relates to centrifugal pump, is specifically related to a kind of New Centrifugal Pump spiral case.
Background technique
Centrifugal pump, as one of topmost power plant in the present age, is widely used in the sophisticated technology field such as all departments and Aero-Space of national economy.Improve the efficiency of centrifugal pump, can finite energy resource be made full use of, the economic benefit of raising.Therefore, improve research and the design level of centrifugal pump, have important impact to the national economic development, energy saving and environmental protection.Turbomachine mainly refers to the working machine adopting liquid as medium, mainly centrifugal pump.Pump is the one of turbomachine, is also the universal machine applied widely, and, just there is the work of pump in every field having flow of fluid.Along with the development of science and technology, the application of pump expands rapidly, and according to country variant statistics, the power consumption of pump all accounts for 1/5 of various countries' gross generation, and the power consumption of visible pump is huge, thus improves pump technical merit significant to energy saving.
Centrifugal pump is in running, and current can produce the Complex Phenomena in Vertical Bell Jars such as friction, collision, Secondary Flow, backflow, whirlpool through parts such as entrance, impeller, spiral cases.Spiral case is the operating vitals of centrifugal pump.The effect of spiral case has collection fluid, and kinetic energy is converted to the stagnation pressure of outlet as much as possible.The increase of volute outlet stagnation pressure contributes to improving centrifugal lift of pump.Wherein the flowing of snail tongue portion the most complicatedly the most easily occurs the flow phenomenons such as whirlpool.Therefore the mobility status improving snail tongue portion just seems particularly important, has larger impact to centrifugal pump performance.
Summary of the invention
The purpose of this utility model is the deficiency for existing research, a kind of New Centrifugal Pump worm frame is provided, the mobility status of New Centrifugal Pump worm frame snail tongue portion obtains obvious improvement, volute outlet section streamline distribution is more even, and there is no the appearance of whirlpool, can effectively improve centrifugal pump performance.
A kind of New Centrifugal Pump spiral case of the utility model, centrifugal pump spiral casing is a kind of spiral shaped housing construction element, comprise inner chamber, outlet conduit and the snail tongue structure between inner chamber low pressure area and zone of high pressure, wherein the molded line of inner chamber adopts log spiral, and described snail tongue structure adopts fillet snail tongue, and this fillet snail tongue molded line adopts two sections of circular arcs to combine, circular parameters is determined by numerical computation method optimization, and the connection between two sections of circular arcs is for being smoothly connected.
the beneficial effects of the utility model
The utility model, by the optimal design to centrifugal pump spiral casing snail tongue portion, effectively can improve the mobility status of snail tongue portion, make volute outlet section streamline distribution comparatively become even, and do not have the appearance of whirlpool, thus the centrifugal pump performance of effective raising.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is snail tongue portion enlarged diagram in Fig. 1.
Description of reference numerals: comprise inner chamber 1, outlet conduit 2, fillet snail tongue 3, fillet snail tongue transition arc 3-1, fillet snail tongue transition arc 3-2.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1 and Figure 2, a kind of New Centrifugal Pump spiral case comprises inner chamber 1, and outlet conduit 2 and fillet snail tongue 3, its sectional drawing as shown in Figure 1.The partial enlarged drawing of snail tongue portion as shown in Figure 2, designates inner chamber 1 respectively, outlet conduit 2 and fillet snail tongue 3.The transition arc of fillet snail tongue 3 is made up of the circular arc 3-1 of two sections of different radiis and circular arc 3-2.
This worm frame changes snail tongue 3 into fillet by right angle, can improve the fluid mobility status at snail tongue 3 place, makes volute outlet section streamline distribution comparatively become even, thus improves the centrifugal pump performance of raising.

Claims (1)

1. a New Centrifugal Pump spiral case, centrifugal pump spiral casing is a kind of spiral shaped housing construction element, comprise inner chamber, outlet conduit and the snail tongue structure between inner chamber low pressure area and zone of high pressure, it is characterized in that: wherein the molded line of inner chamber adopts log spiral, described snail tongue structure adopts fillet snail tongue, and this fillet snail tongue molded line adopts two sections of circular arcs to combine, and the connection between two sections of circular arcs is for being smoothly connected.
CN201520006398.XU 2015-01-06 2015-01-06 A kind of New Centrifugal Pump spiral case Expired - Fee Related CN204419706U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520006398.XU CN204419706U (en) 2015-01-06 2015-01-06 A kind of New Centrifugal Pump spiral case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520006398.XU CN204419706U (en) 2015-01-06 2015-01-06 A kind of New Centrifugal Pump spiral case

Publications (1)

Publication Number Publication Date
CN204419706U true CN204419706U (en) 2015-06-24

Family

ID=53470083

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520006398.XU Expired - Fee Related CN204419706U (en) 2015-01-06 2015-01-06 A kind of New Centrifugal Pump spiral case

Country Status (1)

Country Link
CN (1) CN204419706U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10871169B2 (en) 2017-05-09 2020-12-22 Sulzer Management Ag Volute casing for a centrifugal pump and centrifugal pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10871169B2 (en) 2017-05-09 2020-12-22 Sulzer Management Ag Volute casing for a centrifugal pump and centrifugal pump

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150624

Termination date: 20160106