CN204511975U - A kind of horizontal pump device water flowing out structure - Google Patents
A kind of horizontal pump device water flowing out structure Download PDFInfo
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- CN204511975U CN204511975U CN201420862679.0U CN201420862679U CN204511975U CN 204511975 U CN204511975 U CN 204511975U CN 201420862679 U CN201420862679 U CN 201420862679U CN 204511975 U CN204511975 U CN 204511975U
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Abstract
The utility model patent relates to a kind of horizontal pump device water flowing out structure, belongs to Hydraulic and Hydro-Power Engineering technical field, is made up of short DS section, variable curvature section, long straight gradually expanding section and circular rector digestion device; The wall thickness that described water flowing out structure is each section is all equal, the vertical projected length of water flowing out structure is 11.5 ~ 12.0 times of import circular cross section radius, adopt reinforced concrete cast-in-situ or metallic material manufacture, the rectification prismatic blade of circular rector digestion device is fixed on the internal face of short DS pipe, connecting part is smooth, without protruding.The Outlet Section of described short DS section is corresponding with the size of the admission section of variable curvature section.The Outlet Section of described variable curvature section is corresponding with the size of the admission section of long straight gradually expanding section.The utility model, solves traditional outlet passage and reclaims the low problem of diffuser outlet residue circular rector and as having again excellent water inlet flow channel hydraulic performance during water inlet structure, reach the object improving bidirectional horizontal pump-unit hydraulic efficiency.
Description
Technical field
The utility model patent relates to a kind of horizontal pump device water flowing out structure form, particularly relates to the water flowing out structure of bidirectional horizontal pump-unit, belongs to Hydraulic and Hydro-Power Engineering technical field.
Background technique
Horizontal pump device is made up of water inlet flow channel, impeller, diffuser and outlet passage 4 flow passage components, the major influence factors of pump-unit hydraulic efficiency is the hydraulic loss of outlet passage, because diffuser can not reclaim completely to impeller outlet circular rector, so that the current flowing into outlet passage inside have certain circumferential speed, particularly when low flow rate condition, current can spirally move in outlet passage inside, cause the inner hydraulic loss of outlet passage to increase further.For bidirectional horizontal pump-unit, when bidirectional horizontal pump-unit is in inverted running operating mode, namely outlet passage is used as water inlet flow channel and is used, and it should meet the requirement for impeller provides good inlet velocity to distribute.
At present, the design of one-way horizontal pump-unit outlet passage generally only considers the adequacy of its water flow inside diffusion, therefore when it can be used as water inlet flow channel to be applied to bidirectional horizontal pump-unit, this runner may not necessarily reach optimum for import flow condition that impeller provides, and this problem also annoyings the designing and employing of Reversible pump outlet passage always.For improving the two-way flow hydraulic performance of bidirectional horizontal pump-unit outlet passage, improve outlet passage exit velocity distribution and as having efficient water inlet flow channel hydraulic performance during water inlet flow channel, reach energy-saving and cost-reducing object, design a kind of horizontal pump device water flowing out structure, particularly the water flowing out structure of bidirectional horizontal pump-unit seems very necessary.
Summary of the invention
The object of the utility model patent is exactly for above-mentioned technology Problems existing, the water flowing out structure that a kind of horizontal pump device is dual-purpose is provided, solve traditional outlet passage to reclaim the low problem of diffuser outlet residue circular rector and as having again excellent water inlet flow channel hydraulic performance during water inlet structure, reach the object improving bidirectional horizontal pump-unit hydraulic efficiency.
Technological scheme of the present invention is, a kind of horizontal pump device water flowing out structure, it is characterized in that: be provided with short DS section, variable curvature section, long straight gradually expanding section and circular rector digestion device, short DS section, variable curvature section, long straight gradually expanding section connect successively, circular rector digestion device is fixed on the internal face of short DS pipe by 4 ~ 8 rectification prismatic blades and forms
Described short DS section is the circular cross section adopting linearly increased radius gradually, and diffusion angle is 4 °, and Outlet Section radius is 1.14 times of admission section radius;
Described variable curvature section is for adopting elliptic jet or rectangular cross section, each section increases gradually by nonlinear requirements in the axial direction, the Outlet Section area of variable curvature section is 2.275 times of its admission section area, the outer margin contour line of vertical projection is variable curvature curve, and the outer margin contour line of horizontal projection is straight line;
The straight gradually expanding section of described length is the rectangular cross section of linearly ratio area increased gradually, and diffusion angle is 7 °, and the area of Outlet Section is 4.96 times of short DS section admission section area.
Described rectification prismatic blade equal angles centered by short DS section axis is arranged, rectification prismatic blade thickness is equal, and section configuration is that streamline or two pointed cone are oval.
Described circular rector digestion device contains the solid rectification prismatic blade of the equal thickness of 4 ~ 8, and rectification prismatic blade section configuration is that streamline or two pointed cone are oval, and rectification prismatic blade equal angles centered by short DS section axis is arranged.
Described short DS section is equal with the wall thickness of variable curvature section, long straight gradually expanding section.
The vertical projected length of described water flowing out structure is 11.5 ~ 12.0 times of short DS section import circular cross section radius.
The Outlet Section of described short DS section is corresponding with the size of the admission section of variable curvature section.
The Outlet Section of described variable curvature section is corresponding with the size of the admission section of long straight gradually expanding section.
The utility model patent had both considered the pressure energy restitution coefficient of outlet passage and the design problem of equivalent angle of flare, the axial velocity profile uniformity of water inlet flow channel and 2 performance index at speed weighted mean angle have been taken into account again simultaneously, carry out reforming design to traditional one-way horizontal pump-unit water flowing out structure, to reach the requirement meeting bidirectional horizontal pump-unit and use, both can have been reduced it as hydraulic loss during outlet passage, also can reduce it as hydraulic loss during water inlet flow channel, thus reach the object improving bidirectional horizontal pump-unit hydraulic efficiency.For the hydraulic performance problem that unidirectional outlet passage exists when bidirectional horizontal pump-unit runs, propose the water flowing out structure adopting variable curvature multi-section-line form.
The beneficial effects of the utility model:
The utility model patent is applicable in all types of bidirectional horizontal pump-unit structures, and when pump-unit forward runs, it plays the object reclaiming diffuser outlet residue circular rector further, reduces the hydraulic loss of water flowing out structure; During pump-unit inverted running, it plays the object of further rectification, for impeller provides good import fluidised form, guarantees the operation that unit safety is stable, increases unit operation stability.
Design, the processing and fabricating of the utility model patent are easy for installation, are convenient to extensive enforcement.
To Market implementation possibility and economic benefit forecast analysis:
Water flowing out structure belongs to common flow passage components in horizontal pump device, and horizontal pump device form has accounted for about 40% of national pumping plant sum, and is widely used in the aspects such as industry, agricultural, municipal administration.Horizontal pump device water flowing out structure simplicity of design, is convenient to field conduct, has high popularizing value.On October 14th, 2013, the State Council held the irrigation and water conservancy projects teleconference of national Winter-Spring, required " in-depth reform, new mechanism, carry forward vigorously rural water conservancy infrastructure "; Ministry of Water Resources in 2013 has issued (2013) agriculture water and has filled with No. 09th, letter word " continuing supporting notice of arranging renovation and rebuilding of pump station project construction progress Related Work with transformation on economy of water cousumption, large-scale filling about accelerating to advance Large-Sized Irrigation Districts " and flood control standard system improves, and these social overall background are all that applying of the utility model patent provides opportunity.The utility model patent active response National Program for Medium-to Long-term Scientific and Technological Development (2006-2020) determined " energy-conservation " optimizes theme.The utility model patent is applicable to, in all types of bidirectional horizontal pump-unit structures, guarantee the operation that unit safety is stable, increases unit operation stability, will bring huge economic benefit and social influence thus.
Accompanying drawing explanation
Fig. 1 is facade structures single line drawing of the present utility model.
Fig. 2 is plane structure single line drawing of the present utility model.
Fig. 3 is circular rector digestion device structure single line drawing of the present utility model.
Fig. 4 is the section A-A structure single line drawing of Fig. 3.
Fig. 5 is the section B-B structure single line drawing of Fig. 3.
In figure: 1 short DS section, 2 variable curvature sections, 3 long straight gradually expanding section, 4 circular rector digestion devices.
Embodiment
Illustrate that the utility model is described in further detail below in conjunction with accompanying drawing and accompanying drawing:
A kind of horizontal pump device water flowing out structure, is characterized in that: be made up of short DS section 1, variable curvature section 2, long straight gradually expanding section 3 and circular rector digestion device 4;
Short DS section adopts linearly the circular cross section of increased radius gradually, and diffusion angle is 4 °, and Outlet Section radius is 1.14 times of admission section radius;
Variable curvature section 2 adopts elliptic jet or rectangular cross section (circular arc chamfering process), each section increases gradually by nonlinear requirements in the axial direction, the Outlet Section area of variable curvature section 2 is 2.275 times of its admission section area, the outer margin contour line of vertical projection is variable curvature curve, and the outer margin contour line of horizontal projection is straight line;
The rectangular cross section (circular arc chamfering process) of long straight gradually expanding section 3 linearly ratio area increased gradually, diffusion angle is 7 °, and the area of Outlet Section is 4.96 times of short DS section 1 admission section area;
The solid rectification prismatic blade of circular rector digestion device 4 containing the equal thickness of 4 ~ 8, its section configuration is the geometrical shape that streamline or two pointed cone ellipse etc. are suitable in fluid, rectification prismatic blade equal angles centered by short DS section 1 axis is arranged, it adopts metallic material manufacture.
The wall thickness that described water flowing out structure is each section is all equal, the vertical projected length of water flowing out structure is 11.5 ~ 12.0 times of import circular cross section radius, adopt reinforced concrete cast-in-situ or metallic material manufacture, the rectification prismatic blade of circular rector digestion device is fixed on the internal face of short DS pipe, connecting part need process smooth, without protruding.
In the utility model, the Outlet Section of short DS section 1 is corresponding with the size of the admission section of variable curvature section 2; The Outlet Section of variable curvature section 2 is corresponding with the size of the admission section of long straight gradually expanding section 3; Guarantee the mutual joining place smooth transition of short DS section 1, variable curvature section 2 and long straight gradually expanding section 3 simultaneously.
For large pumping station, short DS section 1, variable curvature section 2 and long straight gradually expanding section 3 can adopt on-the-spot shuttering concreting, and small pumping station, short DS section 1, variable curvature section 2 and long straight gradually expanding section 3 can adopt intermetallic composite coating to make to on-the-spot splicing assembling.Circular rector digestion device 4 adopts metal to make, the rectification prismatic blade of circular rector digestion device 4 is transported to in-site installation after adopting metallic material to process separately and fixes, its form of fracture adopts streamline etc. to be applicable to shape line, the rectification prismatic blade of circular rector digestion device 4 and the inwall concrete mutually of short DS section 1 of characteristic of fluid.
Claims (7)
1. a horizontal pump device water flowing out structure, it is characterized in that: be provided with short DS section (1), variable curvature section (2), long straight gradually expanding section (3) and circular rector digestion device (4), short DS section (1), variable curvature section (2), long straight gradually expanding section (3) connect successively, and circular rector digestion device (4) is fixed on the internal face of short DS pipe by 4 ~ 8 rectification prismatic blades and forms;
Described short DS section (1) is the circular cross section adopting linearly increased radius gradually, and diffusion angle is 4 °, and Outlet Section radius is 1.14 times of admission section radius;
Described variable curvature section (2) is for adopting elliptic jet or rectangular cross section, each section increases gradually by nonlinear requirements in the axial direction, the Outlet Section area of variable curvature section (2) is 2.275 times of its admission section area, the outer margin contour line of vertical projection is variable curvature curve, and the outer margin contour line of horizontal projection is straight line;
The straight gradually expanding section of described length (3) is the rectangular cross section of linearly ratio area increased gradually, and diffusion angle is 7 °, and the area of Outlet Section is 4.96 times of short DS section (1) admission section area.
2. a kind of horizontal pump device water flowing out structure according to claim 1, is characterized in that: described rectification prismatic blade equal angles centered by short DS section (1) axis is arranged, rectification prismatic blade thickness is equal, and section configuration is that streamline or two pointed cone are oval.
3. a kind of horizontal pump device water flowing out structure according to claim 1, it is characterized in that: the solid rectification prismatic blade of described circular rector digestion device (4) containing the equal thickness of 4 ~ 8, rectification prismatic blade section configuration is that streamline or two pointed cone are oval, and rectification prismatic blade equal angles centered by short DS section (1) axis is arranged.
4. a kind of horizontal pump device water flowing out structure according to claim 1, is characterized in that: described short DS section (1) is equal with the wall thickness of variable curvature section (2), long straight gradually expanding section (3).
5. a kind of horizontal pump device water flowing out structure according to claim 1, is characterized in that: the vertical projected length of described water flowing out structure is 11.5 ~ 12.0 times of short DS section (1) import circular cross section radius.
6. a kind of horizontal pump device water flowing out structure according to claim 1, is characterized in that: the Outlet Section of described short DS section (1) is corresponding with the size of the admission section of variable curvature section (2).
7. a kind of horizontal pump device water flowing out structure according to claim 1, is characterized in that: the Outlet Section of described variable curvature section (2) is corresponding with the size of the admission section of long straight gradually expanding section (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420862679.0U CN204511975U (en) | 2014-12-31 | 2014-12-31 | A kind of horizontal pump device water flowing out structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420862679.0U CN204511975U (en) | 2014-12-31 | 2014-12-31 | A kind of horizontal pump device water flowing out structure |
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| CN204511975U true CN204511975U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420862679.0U Expired - Fee Related CN204511975U (en) | 2014-12-31 | 2014-12-31 | A kind of horizontal pump device water flowing out structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499670A (en) * | 2016-10-28 | 2017-03-15 | 扬州大学 | Pump installation outlet passage with secondary stator |
| CN107956950A (en) * | 2017-11-29 | 2018-04-24 | 扬州大学 | A kind of outlet passage with flow Self-balancing |
| CN113062325A (en) * | 2021-03-25 | 2021-07-02 | 李阳 | Concrete pouring method for water inlet runner |
-
2014
- 2014-12-31 CN CN201420862679.0U patent/CN204511975U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499670A (en) * | 2016-10-28 | 2017-03-15 | 扬州大学 | Pump installation outlet passage with secondary stator |
| CN107956950A (en) * | 2017-11-29 | 2018-04-24 | 扬州大学 | A kind of outlet passage with flow Self-balancing |
| CN107956950B (en) * | 2017-11-29 | 2019-08-20 | 扬州大学 | A kind of outlet passage with flow Self-balancing |
| CN113062325A (en) * | 2021-03-25 | 2021-07-02 | 李阳 | Concrete pouring method for water inlet runner |
| CN113062325B (en) * | 2021-03-25 | 2022-08-19 | 李阳 | Concrete pouring method for water inlet runner |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20171231 |