CN209908772U - Novel efficient axial flow pump device based on rotary rear guide vane body - Google Patents
Novel efficient axial flow pump device based on rotary rear guide vane body Download PDFInfo
- Publication number
- CN209908772U CN209908772U CN201920696806.7U CN201920696806U CN209908772U CN 209908772 U CN209908772 U CN 209908772U CN 201920696806 U CN201920696806 U CN 201920696806U CN 209908772 U CN209908772 U CN 209908772U
- Authority
- CN
- China
- Prior art keywords
- guide vane
- water pump
- shaft
- stator
- bearing
- 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.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A novel high-efficiency axial-flow pump device based on a guide vane body after rotation belongs to the technical field of hydraulic engineering equipment, and the device structurally comprises an impeller model, a guide vane model, two motors, two 90-degree bent pipes and water inlet and outlet pipelines, the structure is novel, a water pump shaft and a guide vane shaft are respectively arranged in the two 90-degree bent pipes, a fixed guide vane is changed into a rotatable guide vane, the rotatable guide vane automatically adjusts the steering direction and the rotating speed of the guide vane according to actual flow so as to achieve the aim of correcting the water flow state of a water pump outlet, meanwhile, the rotating guide vane body can also provide partial power for water flow, the lift of the device is improved, the lift is improved more under the working condition of large flow, the blade angle of a low-lift pump station can not be adjusted, a complex blade adjusting mechanism is omitted, the utility model has the advantages of increasing the high-efficiency area of a water pump and greatly improving the, the stability of actual operation is improved.
Description
Technical Field
The utility model belongs to the technical field of hydraulic engineering equipment, a axial-flow pump device is related to, specific saying so relates to a novel high-efficient axial-flow pump device based on rotatory back guide vane body.
Background
The axial flow pump plays an important role in national economy of China, is widely applied to large cross-basin water transfer projects, urban flood control and drainage projects and the like, improves the efficiency of the axial flow pump device, can effectively realize energy conservation and emission reduction, and reduces the operation cost of a large pump station. The impeller is an important flow passage component of the axial flow pump, the rear guide vane of the axial flow pump is a main component for recovering kinetic energy in the pump, and the quality of the flow state in the water pump directly influences the efficiency of the axial flow pump.
The rear guide vane mainly has the effects that the rotary motion of water flow along the circumferential direction is changed into axial motion, the circulation quantity of the water flow is eliminated, partial kinetic energy of fluid is changed into pressure energy, and the hydraulic loss is reduced. The rear guide vane is designed according to the design working condition of the axial flow pump, and after the working condition is changed, the speed triangle at the outlet edge of the impeller blade is changed, so that the inlet angle of the guide vane of the axial flow pump is not matched with the direction of the absolute speed of the water flow flowing out of the impeller blade, and the phenomena of hydraulic impact and flow separation are generated near the inlet section of the guide vane, thereby causing the hydraulic loss of an additional guide vane body.
At present, the rear guide vane body of a large axial-flow pump device in China adopts a stationary vane cascade, the capacity of recovering the speed circulation under the design working condition is still enough, but the capacity of recovering the circulation is limited under the non-design working condition, so that the efficiency is obviously reduced under the non-design working condition, particularly under the large-flow working condition.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose to the guide vane body all adopt behind the present large-scale axial-flow pump device be quiet leaf cascade, it is limited to retrieve the circulation ability under the non-design operating mode, especially large-traffic operating mode efficiency descends obviously to wait not enough, provides a novel high-efficient axial-flow pump device based on rotatory back guide vane body, and this device structure can increase the high-efficient district of water pump operation, can improve the operating efficiency of water pump under large-traffic operating mode, can solve the problem that the skew design operating mode of water pump operation is retrieved speed circulation ability and is reduced when working.
The technical scheme of the utility model is that: a novel efficient axial-flow pump device based on a rotary rear guide vane body comprises a main flow pipeline consisting of a water inlet circular pipe, a water outlet circular pipe, a top bent pipe and a bottom bent pipe; the method is characterized in that: a water pump motor is arranged at the bottom of the outer side of the main flow pipeline, a water pump shaft is arranged in the bottom bent pipe, a first supporting piece is arranged on the inner wall of the bottom bent pipe, an impeller bearing is arranged in the first supporting piece, an impeller is connected to the top of the water pump shaft, the shaft body of the water pump shaft is connected with the impeller bearing in a matching manner, the bottom end of the water pump shaft extends out of the bottom bent pipe and is connected with the water pump motor through a water pump motor coupler, a bottom bearing is arranged at the joint of the water pump shaft and the bottom bent pipe, and a lower shaft seal is arranged outside the bottom bearing; the utility model discloses a water pump, including mainstream pipeline, top elbow, guide vane shaft coupling, top elbow, water pump shaft and guide vane shaft, the outside top of mainstream pipeline is equipped with the guide vane motor, be equipped with the guide vane shaft in the top elbow, be equipped with second support piece on the inner wall of top elbow, be equipped with guide vane bearing in the second support piece, the bottom of guide vane shaft is connected and is equipped with the guide vane, the axle body of guide vane shaft with guide vane bearing cooperation is connected, the top of guide vane shaft is stretched out the top elbow to through guide vane motor shaft coupling with the guide vane motor is connected, the guide vane shaft is equipped with the top bearing with top elbow junction, the top.
The rotating speed of the water pump shaft is 1450r/min, and the power of a water pump motor is 110 kw; the rotating speed of the guide vane is adjusted by a guide vane motor which adopts a 4kw squirrel cage motor and is provided with an encoder and a variable frequency speed regulator, so that the rotating speed is accurately adjustable in a range of-300 r/min to +300 r/min.
The rotation direction of the water pump shaft is opposite to that of the guide vane shaft, the water pump shaft rotates clockwise with the water flow direction as a reference, and the guide vane shaft rotates anticlockwise with the water flow direction as a reference.
And the impeller is in threaded connection with the water pump shaft, and the guide vanes are in threaded connection with the guide vane shaft.
First support piece, second support piece are 5 dull and stereotyped welding constitutions of 6mm thickness, and support piece outer wall and return bend inner wall welded fastening, support piece are used for connecting shell and wheel hub, play support bearing's effect, and support piece can also play the effect of rectification.
The blade of stator is 7, and the blade design of impeller is 4, and the wheel hub ratio of impeller and stator is 0.38, and the stator is rotary part, and the shell irrotational of stator, stator blade and guide impeller hub rotate together, and in order to reduce the clearance loss between stator blade and shell, the rim clearance control of stator blade is within 0.1 mm.
The utility model has the advantages that: the utility model provides a novel high-efficient axial-flow pump device based on rotatory back guide vane body, the device structurally comprises impeller model, stator model, two motors, two 90 return bends, business turn over water piping, novel structure, be equipped with water pump shaft and guide vane shaft in two 90 return bends respectively, change fixed stator into rotatable stator, rotatable stator is through turning to and the rotational speed of automatic adjustment stator according to actual flow, thereby reach the purpose of correcting water pump outlet water flow state, rotatory guide vane body also can provide partial power for rivers simultaneously, improve the device lift, especially the lift under the large-traffic operating mode improves more, can not adjust the blade angle for low-lift pump station, save complicated blade adjustment mechanism, the utility model has the advantages of still having increased the high-efficient region of water pump, having improved the pumping unit efficiency under the non-design operating mode by a wide margin, the stability of actual operation is improved.
Drawings
Fig. 1 is a schematic view of the structure of the device of the present invention.
Fig. 2 is a performance curve diagram corresponding to the middle guide vane body of the present invention rotating at different speeds.
In the figure: the water pump comprises a water inlet circular pipe 1, a water pump motor 2, a water pump motor coupler 3, a lower shaft seal 4, a bottom bearing 5, a bottom bent pipe 6, a water pump shaft 7, an impeller bearing 8, a first supporting piece 9, an impeller 10, a guide vane 11, a second supporting piece 12, a guide vane bearing 13, a guide vane shaft 14, a top bearing 15, a top bent pipe 16, an upper shaft seal 17, a guide vane motor coupler 18, a guide vane motor 19 and a water outlet circular pipe 20.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, a novel efficient axial-flow pump device based on a rotating rear guide vane body comprises a main flow pipeline consisting of a water inlet circular pipe 1, a water outlet circular pipe 20, a top bent pipe 16 and a bottom bent pipe 6; the water pump motor 2 is arranged at the bottom of the outer side of the main flow pipeline, the water pump shaft 7 is arranged in the bottom bent pipe 6, the first supporting piece 9 is arranged on the inner wall of the bottom bent pipe 6, the impeller bearing 8 is arranged in the first supporting piece 9, the top of the water pump shaft 7 is connected with the impeller 10, the shaft body of the water pump shaft 7 is connected with the impeller bearing 8 in a matching manner, the bottom end of the water pump shaft 7 extends out of the bottom bent pipe 6 and is connected with the water pump motor 2 through the water pump motor coupler 3, the bottom bearing 5 is arranged at the joint of the water pump shaft 7 and the bottom bent pipe 6, and; the outer side top of main flow pipeline is equipped with stator motor 19, be equipped with guide vane axle 14 in the top return bend 16, be equipped with second support piece 12 on the inner wall of top return bend 16, be equipped with stator bearing 13 in the second support piece 12, guide vane 11 is connected to the bottom of guide vane axle 14, the axle body and the stator bearing 13 cooperation of guide vane axle 14 are connected, top return bend 16 is stretched out at the top of guide vane axle 14, and be connected with stator motor 19 through stator motor shaft coupling 18, guide vane axle 14 is equipped with top bearing 15 with top return bend 16 junction, top bearing 15 outside is equipped with last bearing seal 17, water pump shaft 7 and guide vane axle 14 are coaxial and independent setting.
As shown in fig. 1, a novel efficient axial-flow pump device based on a rotary rear guide vane body, the rotating speed of a water pump shaft 7 is 1450r/min, and the power of a water pump motor 2 is 110 kw; the rotating speed of the guide vane 11 is adjusted by a guide vane motor 19, the guide vane motor 19 adopts a 4kw squirrel cage motor, and is provided with an encoder and a variable frequency speed regulator, so that the rotating speed is accurately adjustable in a range of-300 r/min to +300 r/min; the rotation direction of the water pump shaft 7 is opposite to that of the guide vane shaft 14, the water pump shaft 7 rotates clockwise by taking the water flow direction as a reference, and the guide vane shaft 14 rotates anticlockwise by taking the water flow direction as a reference; the impeller 10 and the water pump shaft 7, and the guide vane 11 and the guide vane shaft 14 are in threaded connection; the top elbow 16 and the bottom elbow 6 are both 90-degree elbows; the first supporting piece 9 and the second supporting piece 12 are formed by welding 5 plates with the thickness of 6mm, the outer wall of each supporting piece is fixedly welded with the inner wall of the bent pipe, the supporting pieces are used for connecting the shell and the wheel hub to play a role in supporting a bearing, and the supporting pieces can play a role in rectifying; the blades of the guide vanes 11 are 7, the blades of the impeller 10 are designed to be 4, the hub ratio of the impeller 10 to the hub ratio of the guide vanes 11 are both 0.38, the guide vanes 11 are rotating parts, the outer shell of the guide vanes 11 does not rotate, the guide vanes and the guide impeller hub rotate together, and in order to reduce the gap loss between the guide vanes and the outer shell, the rim gap of the guide vanes is controlled within 0.1 mm.
In the embodiment, the design working condition of the axial flow pump impeller is 360L/s, and the diameters of the impeller and the guide vane are both 300 mm. Because the guide vane body has different speed circulation recovery capacities at different working condition points, different guide vane rotating speeds are needed under different working conditions in order to achieve better device efficiency after rotation. As shown in FIG. 2, after the guide vane rotates, the efficiency has obvious improvement effect under the working condition of large flow, and when the working condition of the flow is 460L/s and 440L/s, the rotating speed of the guide vane is set to be 200 r/min; when the flow working condition is 420L/s, the rotating speed of the guide vane is set to be 150 r/min; when the flow working condition is 400L/s, the rotating speed of the guide vane is set to be 100 r/min; when the flow working condition is 380L/s, the rotating speed of the guide vane is set to be 50 r/min; when the flow working condition is 360L/s, the rotating speed of the guide vane is set to be 0 r/min. In order to ensure the operating efficiency of the axial flow pump under the non-design working condition and improve the high-efficiency region operating range of the device as much as possible, the rotating speed of the guide vane is set to be 0r/min when the flow is 0-360L/s; when the flow working condition is 360L/s-440L/s, the rotating speed of the guide vane is set to be 0-200 r/min, and the middle working condition changes linearly; when the flow working condition is larger than 440L/s, the guide vane rotating speed is set to be 200 r/min.
The utility model discloses change fixed stator into rotatable stator, rotatable stator is through turning to and the rotational speed according to actual flow automatic adjustment stator to reach the purpose of correcting water pump outlet rivers flow state, rotatory guide vane body also can provide partial power for rivers simultaneously, and the elevating gear lift, especially the lift under the large-traffic operating mode improves more, can not adjust the blade angle to low-lift pump station, saves complicated blade adjustment mechanism, the utility model discloses the advantage still lies in increasing the high efficiency area of water pump, has increased substantially the pumping unit efficiency under the non-design operating mode, has improved actual operating stability.
Claims (7)
1. A novel efficient axial flow pump device based on a rotary rear guide vane body comprises a main flow pipeline consisting of a water inlet circular pipe (1), a water outlet circular pipe (20), a top bent pipe (16) and a bottom bent pipe (6); the method is characterized in that: a water pump motor (2) is arranged at the bottom of the outer side of the main flow pipeline, a water pump shaft (7) is arranged in the bottom bent pipe (6), a first supporting piece (9) is arranged on the inner wall of the bottom bent pipe (6), an impeller bearing (8) is arranged in the first supporting piece (9), an impeller (10) is connected to the top of the water pump shaft (7), a shaft body of the water pump shaft (7) is connected with the impeller bearing (8) in a matched mode, the bottom end of the water pump shaft (7) extends out of the bottom bent pipe (6) and is connected with the water pump motor (2) through a water pump motor coupler (3), a bottom bearing (5) is arranged at the joint of the water pump shaft (7) and the bottom bent pipe (6), and a lower shaft seal (4) is arranged outside the bottom bearing (; the outer side top of mainstream pipeline is equipped with stator motor (19), be equipped with guide vane axle (14) in top return bend (16), be equipped with second support piece (12) on the inner wall of top return bend (16), be equipped with stator bearing (13) in second support piece (12), the bottom of guide vane axle (14) is connected and is equipped with stator (11), the axle body of guide vane axle (14) with stator bearing (13) cooperation is connected, the top of guide vane axle (14) stretches out top return bend (16), and through stator motor shaft coupling (18) with stator motor (19) are connected, guide vane axle (14) are equipped with top bearing (15) with top return bend (16) junction, top bearing (15) outside is equipped with bearing seal (17), water pump shaft (7) and guide vane axle (14) are coaxial and set up independently.
2. The novel efficient axial flow pump device based on the rotary rear guide vane body according to claim 1, is characterized in that: the rotating speed of the water pump shaft (7) is 1450r/min, and the power of the water pump motor (2) is 110 kw; the rotating speed of the guide vane (11) is adjusted through a guide vane motor (19), the guide vane motor (19) adopts a 4kw squirrel cage motor, and an encoder and a variable frequency speed regulator are arranged, so that the rotating speed is accurately adjustable in the range of-300 r/min to +300 r/min.
3. The novel efficient axial flow pump device based on the rotary rear guide vane body according to claim 1, is characterized in that: the rotation direction of the water pump shaft (7) is opposite to that of the guide vane shaft (14), the water pump shaft (7) rotates clockwise with the water flow direction as a reference, and the guide vane shaft (14) rotates anticlockwise with the water flow direction as a reference.
4. The novel efficient axial flow pump device based on the rotary rear guide vane body according to claim 1, is characterized in that: the impeller (10) and the water pump shaft (7) and the guide vane (11) and the guide vane shaft (14) are in threaded connection.
5. The novel efficient axial flow pump device based on the rotary rear guide vane body according to claim 1, is characterized in that: the top elbow (16) and the bottom elbow (6) are both 90-degree elbows.
6. The novel efficient axial flow pump device based on the rotary rear guide vane body according to claim 1, is characterized in that: first support piece (9), second support piece (12) are 5 dull and stereotyped welding constitutions of 6mm thickness, and support piece outer wall and return bend inner wall welded fastening, support piece are used for connecting shell and wheel hub, play support bearing's effect, and support piece can also play the effect of rectification.
7. The novel efficient axial flow pump device based on the rotary rear guide vane body according to claim 1, is characterized in that: the blade of stator (11) is 7, and the blade design of impeller (10) is 4, and the wheel hub ratio of impeller (10) and stator (11) is 0.38, and stator (11) is rotary part, and the shell irrotational of stator (11), stator blade and guide impeller hub rotate together, and in order to reduce the clearance loss between stator blade and shell, the rim clearance control of stator blade is within 0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696806.7U CN209908772U (en) | 2019-05-15 | 2019-05-15 | Novel efficient axial flow pump device based on rotary rear guide vane body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696806.7U CN209908772U (en) | 2019-05-15 | 2019-05-15 | Novel efficient axial flow pump device based on rotary rear guide vane body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209908772U true CN209908772U (en) | 2020-01-07 |
Family
ID=69048081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920696806.7U Active CN209908772U (en) | 2019-05-15 | 2019-05-15 | Novel efficient axial flow pump device based on rotary rear guide vane body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209908772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989923A (en) * | 2019-05-15 | 2019-07-09 | 扬州大学 | A kind of new and effective axial-flow pump device based on rotating rear guide vane body |
-
2019
- 2019-05-15 CN CN201920696806.7U patent/CN209908772U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989923A (en) * | 2019-05-15 | 2019-07-09 | 扬州大学 | A kind of new and effective axial-flow pump device based on rotating rear guide vane body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101327340B1 (en) | Direct-connection low-speed small mixed-flow hydroturbine for hydrodynamic energy-saving cooling tower | |
| CN201810589U (en) | Tubular pump with movable guide vane at impeller entrance | |
| CN101639085A (en) | Energy-saving device and energy-saving method by regulating front guide vanes of centrifugal pump | |
| CN209908772U (en) | Novel efficient axial flow pump device based on rotary rear guide vane body | |
| CN102562651A (en) | High-efficiency wind-powered centrifugal pump impeller | |
| CN110486217A (en) | A kind of convection rotary type Double-way axial flow pump turbine | |
| CN201714558U (en) | Double-rotating-wheel ultra-low specific rotate speed axial flow hydraulic turbine used for cooling tower fan driving | |
| CN103912434B (en) | A kind of small power station's axial flow water turbine equipment | |
| CN109826802B (en) | Bidirectional axial flow pump device with hidden rear guide vane structure | |
| CN109441691B (en) | Mixed-flow water turbine with tail water pipe and rectifying plate | |
| CN111561451A (en) | Novel full tubular pump with auxiliary blades and design method thereof | |
| CN101900070A (en) | Water turbine for cooling tower having back-flushing ice-melting function | |
| CN114776520B (en) | Savonius turbine booster pump | |
| CN201339532Y (en) | Small-sized francis turbine generator | |
| CN201065807Y (en) | High specific speed packaged axial flow fixed paddle type turbine generation unit | |
| CN204003509U (en) | With the LNG immersed pump of motor cooling recirculation system and bearing self-lubricating structure | |
| CN206144841U (en) | Coaxial bilobed wheel axial - -flow blading pump of preceding impeller blade angularly adjustable | |
| CN103953491B (en) | A kind of hydrodynamic(al) cooling tower directly drives radial water turbine | |
| CN102434215A (en) | Outer-rotor fluid power machine | |
| CN109989923A (en) | A kind of new and effective axial-flow pump device based on rotating rear guide vane body | |
| CN2913656Y (en) | Hydraulic electrogenerating hydraulic turbine | |
| CN209278153U (en) | A kind of micro- lift pump installation of backhoe type blade | |
| CN113915042A (en) | Guide vane body structure of water turbine and mounting method thereof | |
| CN202100536U (en) | Prerotation rectifying device | |
| CN114508488B (en) | Bidirectional shaft tubular pump with vane airfoil type split semi-self-adaptive adjustment and adjustment method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |