CN103438023A - Centrifugal pump with greatly distorted blades - Google Patents
Centrifugal pump with greatly distorted blades Download PDFInfo
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- CN103438023A CN103438023A CN2013104182447A CN201310418244A CN103438023A CN 103438023 A CN103438023 A CN 103438023A CN 2013104182447 A CN2013104182447 A CN 2013104182447A CN 201310418244 A CN201310418244 A CN 201310418244A CN 103438023 A CN103438023 A CN 103438023A
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- blade
- streamline
- centrifugal pump
- greatly distorted
- blades
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Abstract
The invention relates to fluid machine equipment, particularly a centrifugal pump with greatly distorted blades, which comprises impeller blades, a back cover plate, a blade back cover streamline start end, a blade front cover streamline start end and a blade front cover streamline tail end. The invention is characterized in that the impeller blades are controlled by a bezier curve and are in a greatly distorted shape; the distortion curvature of the blade inlet edge curve AB is 90-140 degrees; and the maximum distortion curvature of the blade front cover streamline BC is 110-150 degrees. The invention has the advantage that the bezier curve is utilized to control the blade profile to be in a greatly distorted shape, so that the blade streamline achieves the optimal value conforming to the fluid motion law, thereby avoiding the problems of reflux loss and vibration noise caused by balance holes, reducing the on-way resistance loss, and highlighting the hydraulic performance of the centrifugal pump.
Description
Technical field
The present invention relates to a kind of fluid machines, refer in particular to the centrifugal pump of the very big distortion of a kind of blade, be mainly used in the large-scale coal-fired enterprises such as thermal power plant, chemical plant, Iron And Steel Plant, paper mill, cement plant.
Background technique
At present, the Centrifugal Pumps in China industry adopts the impeller (as Fig. 2) with equalizing orifice mostly, the impeller of this structural type has two shortcomings, the one, the liquid stream flowing state that the backflow of equalizing orifice can affect impeller inlet causes vibration and noise, the 2nd, the energy loss of the generation that refluxes can have influence on the hydraulic performance of pump, and its balanced action is not remarkable, in addition, can reduce the efficiency of pump with the centrifugal pump impeller of back blade, thereby affect the transportation performance of centrifugal pump.From the Hydraulic Design angle, optimizing the raising of choosing to reach the centrifugal pump hydraulic performance of each design parameter, is one of design method of current main flow, but its design process is comparatively loaded down with trivial details, labor workload is large and the design cycle is relatively long, can not be fully as guiding design reference.
Summary of the invention
Improve in order to solve existing centrifugal pump hydraulic performance the deficiency that aspect exists, the invention provides the centrifugal pump of the very big distortion of a kind of blade, purpose is the problem of the energy loss that causes of the leakage in order to solve in prior art due to equalizing orifice and the back blade Efficiency Decreasing that makes centrifugal pump.Introduced the Bezier that is applied to the X-Y scheme application program in the very big distortion design process of blade, there are two control points on each summit of this mathematic curve, for being controlled at the radian of curve of these both sides, summit, so just can control preferably the blade twist degree, with conventional method, compare, the very big distortion method of blade can make the motion streamline of blade streamline and fed sheet of a media extremely identical, reduced so on the one hand the frictional loss produced in the course of conveying, improve on the other hand the conveying effect, improved to a great extent the hydraulic performance of centrifugal pump.
The present invention has designed the centrifugal pump of the very big distortion of a kind of blade, comprise impeller blade 1, back shroud 2, back blade 3, equalizing orifice 4, blade bonnet streamline top A, blade protecgulum streamline top B, and blade protecgulum streamline end C, it is characterized in that: impeller blade 1 adopts Bezier (bezier) curve controlled to present very big distorted shape, the distortion curvature range of entrance edge of blade curve A B is 90 °～140 °, the distortion curvature of blade protecgulum streamline BC is 110 °～150 °, can make the leaf streamline of impeller of centrifugal pump more meet flow field inner fluid flowing law, reduce the impact endurance test shock noise and lower energy loss, highlight the hydraulic performance of centrifugal pump.
The accompanying drawing explanation
Fig. 1 is blade wheel structure figure of the present invention.In Fig. 1: 1. impeller blade, 2. back shroud, A. blade bonnet streamline top, B. blade protecgulum streamline top, C. blade protecgulum streamline end.
The blade wheel structure figure that Fig. 2 is prior art.In Fig. 2: 1. impeller blade, 2. the bonnet utmost point, 3. back blade, 4. equalizing orifice.
Embodiment
Claims (1)
1. the centrifugal pump of the very big distortion of blade, comprise impeller blade 1, back shroud 2, back blade 3, equalizing orifice 4, blade bonnet streamline top A, blade protecgulum streamline top B and blade protecgulum streamline end C, it is characterized in that: impeller blade 1 adopts Bezier (bezier) curve controlled to present very big distorted shape, and the distortion curvature range of entrance edge of blade curve A B is 90 °～140 °, and the distortion curvature of blade protecgulum streamline BC is 110 °～150 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104182447A CN103438023A (en) | 2013-09-16 | 2013-09-16 | Centrifugal pump with greatly distorted blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104182447A CN103438023A (en) | 2013-09-16 | 2013-09-16 | Centrifugal pump with greatly distorted blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103438023A true CN103438023A (en) | 2013-12-11 |
Family
ID=49691726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104182447A Withdrawn CN103438023A (en) | 2013-09-16 | 2013-09-16 | Centrifugal pump with greatly distorted blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103438023A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794991A (en) * | 2020-09-08 | 2020-10-20 | 山东天瑞重工有限公司 | Magnetic suspension double round air-blower |
-
2013
- 2013-09-16 CN CN2013104182447A patent/CN103438023A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794991A (en) * | 2020-09-08 | 2020-10-20 | 山东天瑞重工有限公司 | Magnetic suspension double round air-blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20131211 |