CN202251092U - Butt-splicing low-hump-type bidirectional water outflow passage - Google Patents
Butt-splicing low-hump-type bidirectional water outflow passage Download PDFInfo
- Publication number
- CN202251092U CN202251092U CN2011203015886U CN201120301588U CN202251092U CN 202251092 U CN202251092 U CN 202251092U CN 2011203015886 U CN2011203015886 U CN 2011203015886U CN 201120301588 U CN201120301588 U CN 201120301588U CN 202251092 U CN202251092 U CN 202251092U
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- outflow passage
- way pipe
- water outflow
- downward
- outlet
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Abstract
The utility model discloses a butt-splicing low-hump-type bidirectional water outflow passage, belonging to the technical field of hydraulic machinery. The bidirectional water outflow passage is provided with a three-way pipe and two downward slow curved passages, wherein the main pipe opening of the three-way pipe is connected with the outlet of a guide vane; two branch pipe openings of the three-way pipe are respectively connected with the inlets of the two downward slow curved passages; the top elevations of the outlet sections of the two downward slow curved passages are lower than the minimum water level of an outlet water tank; and the three-way pipe of the bidirectional water outflow passage is manufactured and molded by steel plates, and the two downward slow curved passages are cast and molded by concrete. The butt-splicing low-hump-type bidirectional water outflow passage disclosed by the utility model is reasonable and simple in structure, and is novel and inventive in conception; the shape of the bidirectional water outflow passage which is formed by the three-way pipe and the two downward slow curved passages is curved upward firstly and then slowly curved downward; and the characteristic that the hydraulic loss of the low-hump-type water outflow passage is obviously less than that of an open water outflow passage is fully utilized, thus the efficiency of a pump device is improved greatly. A core-pulling-type mounting mode of a vertical pump set is kept, thus a water pump can be conveniently overhauled.
Description
Technical field
The utility model relates to a kind of low-lift pump device, relates in particular to the outlet passage of vertical two-way pump-unit, belongs to the hydraulic machinery technical field.
Background technique
Low lift vertical two-way pump-unit is a kind of pump-unit pattern that can way traffic; Have advantages such as compact structure, supporting hydraulic structure are few, construction investment province, be widely used at aspects such as riverine regional agricultural drainage and irrigation, water resources allotment, urban flood defence, water environment improvement.
For ease of the installation maintenance of water pump, low lift vertical two-way pump-unit has adopted Drawing-Core water pump structure and open type outlet passage mostly.But the section of linking not between this Drawing-Core water pump diffuser outlet and the open type outlet passage causes the kinetic energy of current to have little time to reclaim and just gets into the bigger outlet passage in space, and kinetic energy rejection is bigger.This in addition open type outlet passage the free discharge state occurs through regular meeting under the lower situation of outlet water level, cause water level fluctuation big, produces bigger hydraulic loss.The general lift of two-way pumping plant is lower, and these hydraulic losses have significantly reduced pump assembly efficiency.
The model utility content
The purpose of the utility model is exactly the deficiency to above-mentioned existing technology; Provide a kind of to piecing together low hump formula outlet passage; Can improve aspect following two outlet passage hydraulic performance, overcome the lower defective of low lift vertical two-way pump assembly efficiency: (1) makes that water pump diffuser and outlet passage are smooth-going to be connected, reaches current and turn in order and mild diffusion; (2) the outlet passage outlet is submerged in below the lowest water level, has reduced the outlet hydraulic loss of outlet passage.
The purpose of the utility model is to realize like this; A kind of to piecing together the low two-way outlet passage of hump formula; It is characterized in that said two-way outlet passage is connected and composed by three-way pipe and two downward broad warp runners, the person in charge of three-way pipe vertically downward; Two arms obliquely; Person in charge's mouth of three-way pipe is connected with the stator outlet, and two mouths of pipe of three-way pipe are connected with the import of two downward broad warp runners respectively, and the crest level of the outlet section of two downward broad warp runners is lower than the lowest water level in outlet pond.
The three-way pipe of said two-way outlet passage is made moulding by steel plate, and two downward broad warp runners are by the concreting moulding.
The utility model is rational in infrastructure simple, and novel ingenious, using effect is good.Three-way pipe and two two-way outlet passages that downward broad warp runner constitutes; Being shaped as of runner is bent upwards broad warp downwards earlier again; The crest level of outlet section is lower than the lowest water level in outlet pond; Make full use of low hump formula outlet passage hydraulic loss significantly less than the characteristics of open type outlet passage, improved pump assembly efficiency greatly.But the metal three-way pipe of being made moulding by steel plate is a lifting part, has kept the Drawing-Core mounting type of former vertical pump unit, still can adopt the method for loosing core when making the water pump maintenance, the three-way pipe dismounting is hung, so that the maintenance of water pump.The utlity model has very big energy-saving potential, have a extensive future.
Description of drawings
Fig. 1 is the facade structures figure of the utility model;
Fig. 2 is the two-way vertical pump device facade structures schematic representation that adopts the utility model;
Fig. 3 is the two-way vertical pump device facade structures schematic representation of existing open type outlet passage.
Among the figure: 1 three-way pipe, 2 downward broad warp runners, 3 pump shafts, 4 stators.
Embodiment
Like Fig. 1, shown in Figure 2; A kind of to piecing together the low two-way outlet passage of hump formula; Two-way outlet passage is made up of three-way pipe 1 and two downward broad warp runners 2, the person in charge of three-way pipe vertically downward, two arms are obliquely; Person in charge's mouth of three-way pipe is connected with stator 4 outlets, and two mouths of pipe of three-way pipe are connected with the import of two downward broad warp runners respectively obliquely.The crest level of the outlet section of two downward broad warp runners is lower than the lowest water level in outlet pond.Three-way pipe 1 is bent upwards broad warp downwards earlier with being shaped as of outlet passage that downward broad warp runner constitutes again.
During construction; Two downward broad warp runners and pump house become integral body by concreting together; Three-way pipe adopts steel plate to make moulding, after performance of over current component of water pump and pump shaft install, with three-way pipe hang in form behind the preformed hole complete to piecing together the low two-way outlet passage of hump formula.
Claims (2)
1. one kind to piecing together the low two-way outlet passage of hump formula; It is characterized in that said two-way outlet passage is connected and composed by three-way pipe and two downward broad warp runners, the person in charge of three-way pipe vertically downward; Two arms obliquely; Person in charge's mouth of three-way pipe is connected with the stator outlet, and two mouths of pipe of three-way pipe are connected with the import of two downward broad warp runners respectively, and the crest level of the outlet section of two downward broad warp runners is lower than the lowest water level in outlet pond.
2. a kind ofly it is characterized in that to piecing together the low two-way outlet passage of hump formula the three-way pipe of said two-way outlet passage is made moulding by steel plate according to claim 1 is said, two downward broad warp runners are by the concreting moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203015886U CN202251092U (en) | 2011-08-18 | 2011-08-18 | Butt-splicing low-hump-type bidirectional water outflow passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203015886U CN202251092U (en) | 2011-08-18 | 2011-08-18 | Butt-splicing low-hump-type bidirectional water outflow passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251092U true CN202251092U (en) | 2012-05-30 |
Family
ID=46112342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203015886U Expired - Fee Related CN202251092U (en) | 2011-08-18 | 2011-08-18 | Butt-splicing low-hump-type bidirectional water outflow passage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269181A (en) * | 2011-08-18 | 2011-12-07 | 扬州大学 | Butt matching low-hump-type bidirectional water-outlet flow channel |
| CN112160941A (en) * | 2020-09-09 | 2021-01-01 | 江苏大学 | Guide vane combination structure for improving unstable hump phenomenon of volute type centrifugal pump |
-
2011
- 2011-08-18 CN CN2011203015886U patent/CN202251092U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269181A (en) * | 2011-08-18 | 2011-12-07 | 扬州大学 | Butt matching low-hump-type bidirectional water-outlet flow channel |
| CN112160941A (en) * | 2020-09-09 | 2021-01-01 | 江苏大学 | Guide vane combination structure for improving unstable hump phenomenon of volute type 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: 20120530 Termination date: 20140818 |
|
| EXPY | Termination of patent right or utility model |